Safety cushion, and safety structure of hook type, rotary-locking type or engagement-slot-locking type

Abstract

A safety cushion, and a safety structure of a hook type, a rotary-locking type, an engagement-slot-locking type, a buckle-locking type or a gear-locking type. By means of providing a cushion base plate, a seat belt connecting device, a protective cover, a cushioning layer and an anti-collision protective pad, providing a connection portion at a position on the cushion base plate between two legs, and detachably connecting to the connection portion the seat belt connecting device mounted on a seat belt, the seat belt that is located across the abdomen when being fastened in a normal manner can be tightened and fixed to the connection portion between the thighs, thereby preventing pressure on the abdomen of a user; by means of mounting the protective cover around the connection portion and embedding the seat belt connecting device in a cushion body, the seat belt connecting device is prevented from causing secondary injuries to the user; by means of laying the cushioning layer, the protective cover can be embedded and the comfort can be improved; by means of providing the anti-collision protective pad, a side edge of the seat belt can be prevented from cutting the user; and different locking manners are set to meet the requirements for product variety and diversity.

Description

Safety seat cushions, and safety structures including hook-type, rotary locking, and slot locking types. Technical Field

[0001] This invention relates to the field of child safety seat technology, and in particular to a safety structure for preventing abdominal pressure on a seat, specifically a safety cushion, and safety knots of the hook type, rotation locking type, slot locking type, seat belt buckle locking type, and gear locking type. Background Technology

[0002] With the rapid increase in car ownership and the growing availability of other convenient public transportation options, more and more pregnant women, children, and other individuals whose abdomens cannot withstand pressure need to drive or use public transportation. Because car seatbelts tighten suddenly during braking or in the event of a traffic accident, they can compress or injure the abdomens of these individuals, potentially causing harm.

[0003] Chinese invention patent CN205589177U discloses a seat belt securing device for pregnant women, including a bracket body fixed to the seat and a seat belt wrap handle installed on the surface of the bracket body. By fixing the bracket body to the seat between the thighs, the seat belt is tightly hooked and secured between the thighs by the wrap handle, so that the seat belt will not compress the pregnant woman's abdomen in case of an emergency. However, this seat belt securing device is made of a hard material and protrudes and is exposed between the passenger's thighs. When braking or in the event of a traffic accident, the pregnant woman's perineum and groin are very likely to hit the metal hook, causing secondary injury.

[0004] Chinese invention patent CN208411663U discloses a rear seatbelt for pregnant women in automobiles. This device, based on existing seatbelts, extends a seatbelt webbing from the LATCH interface in the rear seat and through the gap in the rear seat to the pregnant woman's crotch area. An O-ring is installed at the pregnant woman's crotch area, allowing the seatbelt to pass between the pregnant woman's thighs, thus avoiding any adverse effects on the fetus. However, this pregnant woman seatbelt can only be installed in the rear seat and cannot be fixed in the front seat; furthermore, the O-ring directly contacts the pregnant woman's crotch area, which may cause secondary injuries such as impact to the perineum and groin area during braking or in the event of a traffic accident.

[0005] Chinese patent CN106627473A discloses a safety belt for pregnant women, which comprises a cushion and a safety belt fixing device. The cushion is provided with openings at the middle and two front corner parts, and safety belt fixing belts are arranged at two rear corner parts respectively. The safety belt fixing belts can be passed out of the openings at the middle or the two front corner parts, and the safety belt of the automobile can be fixed at the middle or the outside of the thighs of the user. The safety belt can protect the abdomen of the user when the automobile collides, and can be used whether the user wears a skirt or trousers. However, the safety belt for pregnant women provided by the scheme is not only difficult to install and disassemble, but also is made of a safety cushion only by a textile and a safety belt. Since there is no protection of high-strength structural parts, there is a potential safety hazard. SUMMARY

[0006] The purpose of the present application is to provide a safety cushion, a safety structure for preventing abdominal compression on a seat, a bent hook type safety structure for preventing abdominal compression on a seat, a quick release type seat safety structure, a rotary locking type safety belt connecting mechanism, a clamping groove locking type safety belt connecting mechanism, a safety belt connecting mechanism, a safety structure for preventing abdominal compression, a safety structure for a seat, and a sliding rod fixed type safety structure according to the deficiencies in the prior art. The transverse safety belt in the safety belt used by the personnel on the vehicles such as automobiles, ships and airplanes, and the personnel on the wheelchairs, the personnel on the conveying devices such as the personnel belt conveyors in mines and entertainment facilities is guided between the legs of the personnel, so as to avoid the compression of the abdomen of the user. By installing a protective cover around the connecting part, the safety belt connecting device is buried in the main body of the cushion, so as to prevent the safety belt connecting device from causing secondary injury to the user. The safety is stable, the operation is convenient, and the safety structure is suitable for being installed on front and rear seats.

[0007] In a first aspect, the present application provides a safety cushion, comprising:

[0008] a base, wherein a plurality of supporting members are arranged on the base;

[0009] a flat plate member, which is covered on the base and is supported and fixed by the supporting members, and a plurality of connecting grooves are arranged on the flat plate member;

[0010] a protective cover, which is fixed on the flat plate member and is used for forming a connecting space around the connecting grooves; and

[0011] an elastic buffer layer, which is arranged on the flat plate member.

[0012] Further, the protective cover is a U-shaped cover comprising a horizontal bottom surface, a U-shaped inner side surface, a U-shaped outer side surface and a top surface. The horizontal bottom surface is provided with mounting holes corresponding to the connecting grooves. The U-shaped inner side surface and the U-shaped outer side surface are both in the shape of three-slope gradually protruding.

[0013] Further, the base is provided with a plurality of longitudinal and transverse intersecting stiffening ribs.

[0014] Further, the base is provided with a surrounding edge.

[0015] Further, the base is provided with ISOFIX hard interface connectors or seat cushion fixing assemblies near the bottom of both sides.

[0016] Further, the seat cushion fixing assembly comprises a fixing belt, a hook and a fixing belt adjuster, the first installation space is formed by the inward recess of the front end of both sides of the base to expose the flat plate, the fixing belt adjuster is fixed on the exposed flat plate in the first installation space, the first gap for the fixing belt to pass through is provided on the surrounding edge near the rear end of the first installation space, the second installation space is formed by the upward recess of the bottom of both sides of the rear end of the base, the second gap for the fixing belt to pass through is provided on the surrounding edge near the front end of the second installation space, and the hook is fixed on the fixing belt passing through the second gap.

[0017] Further, the base in the second installation space is provided with a hanging rod for temporarily fixing the hook.

[0018] Further, the connection slot is a rectangular slot, and one safety belt female buckle is arranged in each connection slot.

[0019] The application also provides another scheme, a safety seat cushion, comprising:

[0020] a base provided with a plurality of support pieces;

[0021] a flat plate covering the base and being supported and fixed by the support pieces, the middle part of the flat plate being provided with a sunken U-shaped groove, and the bottom of the U-shaped groove being provided with a plurality of connection slots; and

[0022] a flexible buffer layer arranged on the flat plate.

[0023] Further, the connection slot is a circular slot, and a plurality of circular slots are connected by a sliding groove.

[0024] Further, the bottom of the base is provided with a height increasing pad for adjusting the height.

[0025] Further, the bottom of the base is provided with a connecting column, a connecting slot or a connecting block, and the height increasing pad is installed on the bottom of the base by any one or several connecting modes of screw, interference and buckle.

[0026] Further, the support piece is a support column or a support block, and the support piece is provided with a connecting hole connected with the flat plate.

[0027] Further, the bottom of the U-shaped groove has a gap space between the lower surface and the upper surface of the base, the connection slot is a circular slot, and a plurality of circular slots are connected by a sliding groove.

[0028] Compared with the prior art, the application has the following beneficial effects:

[0029] The application creates a space for installing the female buckle between the flat plate and the base through the support, reduces the manufacturing difficulty and cost, and the flat plate of the application is connected to the base through multiple scattered points (supports), and the torsion resistance of the flat plate is improved through the scattered multiple points, so that the application can adopt a thinner size to obtain better overall mechanical properties, and the material cost can be further reduced; the base of the application can be molded by plastic injection molding, which is low in cost and high in production efficiency; the flat plate of the application is a plate-shaped structure that only needs to be simply drilled, and is easy to process and low in processing cost; and by being flat, the entire safety seat cushion is relatively flat, and even if limited by the size of the car seat cushion, the thigh has a suitable moving space on the safety seat cushion, and discomfort caused by the thigh being stuck is avoided.

[0030] In a second aspect, the application provides a safety structure for preventing abdominal compression on a seat, the seat comprising a safety belt, the safety structure comprising:

[0031] A seat cushion substrate is a plate-shaped structure arranged on the seat and used for bearing weight, and a hollow structure is arranged at a position between the legs at the front end of the seat cushion substrate to form a connecting portion.

[0032] A safety belt connecting device is installed on the safety belt and detachably connected to the connecting portion.

[0033] A protective cover is installed around the connecting portion to surround and protect the safety belt connecting device connected to the connecting portion.

[0034] A cushion layer is wrapped around the seat cushion substrate to form a seat cushion.

[0035] A collision protection pad is arranged on the seat cushion substrate at a side close to the user relative to the connecting portion, and is used to constrain the safety belt to form a surface contact between the safety belt and the root of the thigh and the bottom of the lower abdomen of the user, preventing the safety belt from cutting the user.

[0036] Further, the connecting portion is a first protrusion arranged at a position between the legs at the front end of the seat cushion substrate.

[0037] Further, a second space is arranged at a position outside the legs of the seat cushion substrate, a clamping sleeve is installed below the second space, and both ends of the clamping sleeve are fixed to the bottom of the seat cushion substrate and the end of the second space, respectively, to form a hollow structure below the second space.

[0038] Further, the second space is installed with a length-adjustable connecting assembly in the hollow structure formed by the sleeve, the connecting assembly being able to be pulled out from the rear of the safety structure and detachably connected with the ISOFIX interface of the child safety seat fixing system (International Standards Organization FIX).

[0039] Further, the connecting assembly is a safety structure fixing belt or an ISOFIX hard interface connecting piece of the child safety seat fixing system, one end of the safety structure fixing belt and the ISOFIX hard interface connecting piece of the child safety seat fixing system being provided with a hook or a buckle respectively, which is detachably connected with the ISOFIX interface of the child safety seat fixing system.

[0040] Further, the protective cover is a U-shaped cover including a horizontal bottom surface, a U-shaped inner side surface, a U-shaped outer side surface and a top surface, the horizontal bottom surface and the U-shaped outer side surface being fixed on the connecting part and the cushion base plate respectively, the U-shaped inner side surface and the U-shaped outer side surface surrounding and protecting the safety belt connecting device connected with the connecting part, the horizontal bottom surface being adapted in shape and size to the connecting part, so that the safety belt connecting device is connected with the connecting part in the U-shaped cover.

[0041] Further, the U-shaped inner side surface and the U-shaped outer side surface are both three-sided sloping side surfaces gradually protruding.

[0042] Further, the cushion base plate is a hollow structure plate, the connecting part at the front end of the cushion base plate between the two legs and the positions outside the two legs being hollow structures.

[0043] Further, the hollow structure plate is provided with a plurality of cushion blocks.

[0044] Further, a height-adjusting pad is installed below the cushion base plate through a connecting piece, the connecting piece being a connecting hole, a connecting slot or a connecting block provided on the cushion base plate.

[0045] Further, the safety belt connecting device includes a first connecting end for connecting with the safety belt and a second connecting end for connecting with the connecting part.

[0046] The second connecting end is detachably connected with the connecting part by one of the following schemes:

[0047] Scheme one, the second connecting end includes a connecting seat and a connecting rod for fixing the connecting seat on the first connecting end; the connecting part is provided with an installation hole and a plurality of limiting holes communicated by a sliding groove, the connecting seat being able to pass through the installation hole, the connecting rod being able to freely slide in the sliding groove and being clamped and fixed with the connecting seat through the limiting hole when being slid to a suitable position.

[0048] The second connecting end comprises a connecting seat and a connecting rod for fixing the connecting seat on the first connecting end; the connecting part is provided with a sliding groove and an installation hole communicated with the sliding groove, the back of the sliding groove is provided with a plurality of limiting grooves, the connecting seat can pass through the installation hole, the connecting rod can freely slide in the sliding groove, and the connecting seat is clamped and fixed by the limiting grooves when the connecting rod is slid to a suitable position.

[0049] The second connecting end is a buckle; the connecting part is provided with a plurality of clamping grooves or a plurality of hook connecting holes which are detachably connected with the buckle.

[0050] The technical scheme has at least one of the following beneficial technical effects:

[0051] 1. By setting the cushion base plate as a plate structure, the structural strength of the safety structure can be improved, and better protection can be provided for the user whose abdomen cannot be pressed; by setting the connecting part between the two legs of the cushion base plate and detachably connecting the safety belt connecting device installed on the safety belt with the connecting part, the safety belt located on the abdomen when normally buckled can be pulled and fixed on the connecting part between the thighs of the user, so as to avoid the pressure on the abdomen of the user; by installing the protective cover around the connecting part, the safety belt connecting device can be buried in the middle position of the safety structure main body, so as to prevent the safety belt connecting device from causing secondary injury to the user; by laying the buffer layer, not only the injury of the protective cover to the user can be prevented, but also the comfort of riding can be improved; by adjusting the safety belt connected between the thighs with the anti-collision protective pad, the middle part of the safety belt forms a surface contact with the root of the thigh and the bottom of the lower abdomen of the user, which not only improves the comfort of the user, but also avoids the safety belt side edge from cutting the user.

[0052] 2. By setting the shape of the horizontal bottom surface of the U-shaped cover to be matched with the shape of the connecting part, the safety belt connecting device can be fixed on the connecting part and hidden in the U-shaped cover; by setting the inner side surface and the outer side surface of the U-shaped cover as three-slope gradually protruding shapes, the impact pressure can be released and relieved, so as to avoid the direct impact of the user with the safety belt connecting device when the vehicle, the transport tool or the amusement facility collides, and to protect the safety of the user.

[0053] 3. By setting the position between the thighs and outside the thighs of the seat cushion base plate as a hollow structure, not only the space for the connection of the seat belt connecting device and the installation of the connecting assembly is provided, but also the weight of the seat cushion base plate is greatly reduced, and the lightweight design is realized while the structural strength is ensured. By setting the connecting assembly as a safety structure fixing belt or an ISOFIX hard interface connecting piece of a child safety seat fixing system, the safety structure of the application can be connected with the ISOFIX interface of the child safety seat fixing system on the rear seat according to the use specifications of different countries, and the length of the connecting assembly can be adjusted, so that the safety structure of the application can be applied to seats of different sizes; the hooks on the safety structure fixing belt can be connected with the ISOFIX interface of the child safety seat fixing system on the rear seat, so that the safety structure of the application can be installed on the rear seat. When it is needed to install the safety structure on the front seat, the hooks on the safety structure fixing belt or the buckles on the ISOFIX hard interface connecting piece can be connected with the fixing belt with the buckle metal ring, the hooks or the buckles of the child safety seat fixing system ISOFIX hard interface connecting piece are connected with the metal ring, the fixing belt is tied on the backrest of the front seat, and the buckles are fixed, so that the safety structure is fixed on the front seat, and the user driving or sitting in the front row is protected.

[0054] 4. By setting the mounting hole matched with the second connecting end and the plurality of limiting holes on the connecting part, the connection position of the seat belt connecting device and the connecting part can be adjusted, the installation position of the seat belt connecting device can be adjusted according to the abdominal size and body shape of different users, and the comfort of the safety structure of the application is improved; and by fixing the seat belt on the limiting hole as close as possible to the root of the user's thigh, the displacement of the user's forward impact when braking or in an accident is reduced as much as possible, the seat belt generates restraint force in time, and the safety performance is improved. By installing the height adjusting pad under the seat cushion base plate, the thickness of the height adjusting pad can be adjusted according to the height of the user, so that adults and children of different heights can use the safety structure of the application.

[0055] In a third aspect, the application provides a hook-type safety structure for preventing abdominal compression on a seat, the seat comprising a seat belt, the safety structure comprising:

[0056] a seat cushion base plate, which is a plate-shaped structure arranged on the seat and used for bearing weight, the front end of the seat cushion base plate being arranged as a hollow structure at a position between the two legs to form a mounting seat;

[0057] a seat belt connecting mechanism for connecting the seat belt, comprising a hook mounted on the mounting seat and a locking device capable of locking with the hook to prevent the seat belt from being separated; the hook is manufactured by a bending process, a folding process, a roller bending process or a stretch bending process;

[0058] A protective cover is installed on the cushion base around the mounting seat or integrally formed with the cushion base to protect the safety belt connecting mechanism;

[0059] A buffer layer is wrapped around the cushion base and the protective cover to form a cushion;

[0060] A collision protection pad is arranged on the cushion base on the side of the mounting seat close to the user to constrain the safety belt and form a surface contact between the safety belt and the user's thigh root and lower abdomen bottom to prevent the user from being cut by the side edge of the safety belt; and

[0061] A cushion tail filling block is arranged between the rear end of the cushion base and the user's hip to make the user's body as close as possible to the hook.

[0062] Further, the mounting seat is a first space arranged on the cushion base between the two legs, and the hook includes a fixed end installed on one side of the first space close to the middle of the cushion base and a connecting end close to one side of the edge of the safety structure.

[0063] Further, the locking device is a spring type locking device including a fixed sleeve installed in the mounting seat and a spring and a piston installed in the fixed sleeve, the piston being installed on the top of the spring and being lockable with the connecting end.

[0064] Further, an adjusting rod is arranged on the piston, the rear end of the adjusting rod being fixed on the piston and the front end of the adjusting rod extending out of the fixed sleeve and the safety structure, a vertical sliding groove and a horizontal sliding groove at the bottom of the vertical sliding groove being arranged on the fixed sleeve, and the adjusting rod being slidable in the vertical sliding groove and the horizontal sliding groove.

[0065] Further, the protective cover is a U-shaped cover including a horizontal bottom surface, a vertical side surface, a U-shaped inner side surface, a U-shaped outer side surface, and a top surface, mounting holes matched with the safety belt connecting mechanism being arranged on the horizontal bottom surface and the vertical side surface, and the U-shaped inner side surface and the U-shaped outer side surface both being three-slope gradually convex shapes.

[0066] Further, the positions of the cushion base on the outer sides of the two legs are hollow structures forming installation grooves, and length-adjustable connecting components are installed in the installation grooves, the connecting components being able to pass out from the rear of the cushion base and being detachably connected with an ISOFIX interface of a child safety seat fixing system (International Standards Organization FIX).

[0067] Further, the locking device is a knob type locking device, comprising a nut fixed in the mounting seat, a screw rod penetrating the top of the mounting seat and being threadedly connected with the nut, and a knob fixed on the screw rod, and rotating the knob can lock the top of the screw rod with the connecting end.

[0068] Further, the locking device is a barb locking device, comprising a barb installed on the connecting end, and the distance between the barb and the horizontal bottom surface of the U-shaped cover is greater than the thickness of the safety belt.

[0069] Further, the top of the mounting seat is provided with a plurality of hook connecting holes spaced apart in the front-rear direction, and the fixed end of the hook can be detachably connected with any hook connecting hole.

[0070] In summary, the technical solution has at least one of the following beneficial technical effects:

[0071] 1. By setting the cushion base plate as a plate structure, the structural strength of the safety structure can be improved, and better protection can be provided for the user whose abdomen cannot be pressed. By setting the position between the two legs on the cushion base plate as a hollow mounting seat, and installing a safety belt connecting mechanism on the mounting seat for connecting the safety belt, the safety belt located on the abdomen when normally buckled can be pulled and fixed on the mounting seat between the user's thighs, avoiding the user's abdomen being pressed. The hook and the locking device can lock the safety belt in the space formed by the safety belt connecting mechanism and the protective cover, so that the safety risk caused by the safety belt disengaging from the safety belt connecting mechanism is avoided, and the safety performance is improved. By using the bending, bending, roll bending or bending process to replace the casting and polishing process to directly process the hook, the production links such as casting and polishing are reduced, not only the manufacturing cost and processing time are reduced, but also the product strength is improved. By installing the protective cover around the mounting seat, the hook and the locking device can be buried in the middle position of the main body of the safety structure, preventing the hook and the locking device from causing secondary injury to the user. By laying the buffer layer, not only the protective cover can prevent the user from being injured, but also the comfort of riding can be improved. By adjusting the safety belt connected between the thighs with the anti-collision protective pad, the middle part of the safety belt forms a surface contact with the user's thigh root and the bottom of the lower abdomen, which not only improves the comfort of the user, but also avoids the safety belt side from cutting the user. By filling the block between the rear end of the cushion base plate and the user's buttocks, the user's body can be kept as close to the hook as possible, and the displacement of the user's forward impact when braking or in an accident is minimized, so that the safety belt generates binding force in time, improving the safety performance.

[0072] 2. By setting the position of the seat cushion substrate between the thighs and outside the thighs as a hollow structure to form a mounting seat and a mounting groove, respectively, not only space is provided for the connection and fixation of the safety belt connecting mechanism and the installation of the connecting assembly, but also the weight of the seat cushion substrate can be greatly reduced, while ensuring the structural strength and achieving lightweight design. By setting the connecting assembly as a seat cushion fixing belt or an ISOFIX hard interface connecting piece of a child safety seat fixing system, the safety structure of the application can be connected with the ISOFIX interface of the child safety seat fixing system on the rear seat cushion to meet the use specifications of different countries, and the length of the connecting assembly can be adjusted, so that the safety structure of the application can be applied to seats of different sizes; the hook on the seat cushion fixing belt can be connected with the ISOFIX interface of the child safety seat fixing system on the rear seat, so that the safety structure of the application can be installed on the rear seat; and the seat cushion fixing belt is externally connected with a buckle fixing belt to fix the seat cushion on the backrest of the front seat.

[0073] In a fourth aspect, the application provides a quick-release type seat safety structure, the seat comprising a safety belt, and the safety structure comprising:

[0074] a seat cushion substrate, which is a plate-shaped structure arranged on the seat and used for bearing weight, the front end of the seat cushion substrate being provided with a hollow structure at a position between the thighs to form a connecting part, the connecting part being provided with a plurality of female buckles having different distances from the seat backrest;

[0075] a safety belt connecting device, comprising a connecting end and a plug-in end fixedly connected with the connecting end, the connecting end being provided with a sliding groove capable of freely sliding on the safety belt, and the plug-in end being provided with a lock hole capable of being detachably connected with the female buckle;

[0076] a protective cover, which is installed around the connecting part and used for surrounding and protecting the safety belt connecting device connected with the connecting part; and

[0077] a buffer layer, which wraps the seat cushion substrate and the protective cover to form a seat cushion.

[0078] Further, the connecting end comprises a fixed part and a movable part, the fixed part being integrally made and arranged with the plug-in end, the movable part being detachably fixedly connected with the fixed part, and a gap forming the sliding groove being arranged between the movable part and the fixed part.

[0079] Further, the connecting end is a flat ring, the inner diameter of the flat ring forming the sliding groove, a first notch being formed on one side of the flat ring, a hinge rod being hingedly connected to the flat ring at one end of the first notch, and the other end of the hinge rod being detachably connected with the flat ring at the other end of the first notch through a threaded sleeve.

[0080] Further, the safety belt connecting device comprises two connecting plates and a fixing shell, one end of the connecting plate is a plug-in part, the other end is a connecting part, the plug-in part is provided with a lock hole, the connecting part is provided with a strip-shaped slot, the strip-shaped slot is provided with a second gap for the safety belt to pass in and out, the two connecting plates are fixed together by the fixing shell after being attached, the lock holes are aligned after the two connecting plates are attached, and the second gaps in the strip-shaped slots are arranged staggered.

[0081] Further, the two connecting plates are completely the same in shape and size, one of the connecting plates is turned over by 180 degrees when being attached, so that the two second gaps are arranged staggered.

[0082] Further, the fixing shell is composed of two half shells which are detachably connected, and the two half shells are provided with a sink groove matched with the connecting part of the connecting plate and a through groove matched with the strip-shaped slot.

[0083] Further, the safety structure further comprises an anti-collision protection pad, the anti-collision protection pad is arranged on the seat cushion base plate on the side close to the user of the connecting part, is used for restraining the safety belt, and makes the safety belt form a surface contact with the root of the thigh and the bottom of the small abdomen of the user to prevent the safety belt from cutting the user.

[0084] Further, the seat cushion base plate is provided below with a height adjusting pad through a connecting piece, and the connecting piece is a connecting hole, a connecting slot or a connecting block arranged on the seat cushion base plate.

[0085] In summary, the present application has at least one of the following beneficial technical effects:

[0086] 1. By arranging the seat cushion base plate as a plate structure, the structural strength of the safety structure of the present application can be improved, better protection can be provided for the user whose abdomen cannot be pressed, the connecting part is arranged on the seat cushion base plate between the two legs, the safety belt connecting device installed on the safety belt is detachably connected with the female buckle on the connecting part, the safety belt located on the abdomen when being normally buckled can be pulled and fixed on the connecting part between the thighs of the user to avoid the abdomen of the user being pressed, the protective cover is installed around the connecting part to bury the safety belt connecting device in the middle position of the main body of the safety structure to prevent the safety belt connecting device from causing secondary injury to the user, the buffer layer is laid to not only prevent the protective cover from causing injury to the user but also improve the comfort of riding, and the anti-collision protection pad adjusts the safety belt connected between the thighs to make the middle part of the safety belt form a surface contact with the root of the thigh and the bottom of the small abdomen of the user, which not only improves the comfort of the user but also avoids the safety belt from cutting the user.

[0087] 2. By setting the shape of the horizontal bottom surface of the U-shaped cover to be compatible with the shape of the connecting part, the seat belt connecting device can be fixed on the connecting part and hidden in the U-shaped cover, and by setting the inner side surface and the outer side surface of the U-shaped cover to be gradually convex in the shape of three inclined surfaces, the impact pressure can be released and relieved, direct impact between the user and the seat belt connecting device can be avoided when the vehicle, the transport vehicle or the amusement facility collides, and the user can be protected.

[0088] 3. By setting the position of the seat cushion base plate between the thighs and outside the thighs to be a hollow structure, not only space is provided for the connection and fixation of the seat belt connecting device and the installation of the connecting assembly, but also the weight of the seat cushion base plate can be greatly reduced, and lightweight design is realized while the structural strength is ensured. By setting the connecting assembly to be a safety structure fixing belt or an ISOFIX hard interface connecting piece of a child safety seat fixing system, the safety structure of the present application can be connected with the ISOFIX interface of the child safety seat fixing system on the rear seat to meet the use specifications of different countries, and the length of the connecting assembly can be adjusted, so that the safety structure of the present application can be applied to seats of different sizes; the hooks on the safety structure fixing belt can be connected with the ISOFIX interface of the child safety seat fixing system on the rear seat, so that the safety structure of the present application can be installed on the rear seat. When it is necessary to install the safety structure on the front seat, the hooks on the safety structure fixing belt or the buckles on the ISOFIX hard interface connecting piece can be connected with the fixing belt with a buckle metal ring, the buckles on the safety structure fixing belt or the ISOFIX hard interface connecting piece of the child safety seat fixing system are connected with the metal ring, the fixing belt is tied on the backrest of the front seat, and the buckles are fixed, so that the safety structure is fixed on the front seat, and the user driving or sitting in the front row is protected.

[0089] 4. By setting the female buckle and the plug end on the connecting part, the seat belt connecting device can be quickly and reliably connected and disconnected with the connecting part, and the connection position can be adjusted, so that the installation position of the seat belt connecting device can be adjusted according to the size of the abdomen and the body shape of different users, and the comfort of the safety structure of the present application is improved; and by fixing the seat belt on the female buckle as close to the root of the user's thighs as possible, the displacement of the user's forward impact when braking or in an accident is minimized, the seat belt generates restraint force in time, and the safety performance is improved. By installing a height adjusting pad under the seat cushion base plate, the thickness of the height adjusting pad can be adjusted according to the height of the user, so that adults and children of different heights can use the safety structure of the present application.

[0090] In a fifth aspect, the present application provides a rotary locking type seat belt connecting mechanism installed on a seat or a safety cushion, wherein the seat or the safety cushion is provided with a seat belt, and the rotary locking type seat belt connecting mechanism comprises:

[0091] A safety belt connecting device, comprising a first connecting end for connecting with the safety belt and a second connecting end connectable with a seat or a safety cushion, the second connecting end comprising a connecting seat and a connecting rod for fixing the connecting seat on the first connecting end, the connecting rod having at least a first cross-sectional width and a second cross-sectional width, and the first cross-sectional width being smaller than the second cross-sectional width.

[0092] A connecting part mounted on the seat or the safety cushion for connecting with the second connecting end, the connecting part being provided with an installation hole and a plurality of limiting holes communicated by a sliding groove, the installation hole being adapted to the size of the connecting seat, the sliding groove having a width between the first cross-sectional width and the second cross-sectional width, and the limiting holes having a size greater than the second cross-sectional width of the connecting rod, so that the connecting rod can freely slide in the sliding groove in the direction of the first cross-sectional width, and be clamped in the limiting holes when rotating to the second cross-sectional width under the action of an external force.

[0093] Further, the first direction and the second direction of the connecting rod are perpendicular.

[0094] Further, the connecting rod is a cylindrical rod with two opposite faces cut into planes, the first cross-sectional width being the distance between the two planes, and the second cross-sectional width being the diameter of the cylindrical rod.

[0095] Further, the connecting seat is a disc having a diameter greater than the second cross-sectional width of the connecting rod.

[0096] Further, the installation hole has a diameter greater than the diameter of the connecting seat, and the limiting holes have a diameter smaller than the diameter of the connecting seat.

[0097] Further, the first connecting end comprises a fixed rod and a movable rod connected detachably.

[0098] Further, the fixed rod and the movable rod are connected by a revolute pair at one end and detachably connected by a fastener at the other end.

[0099] Further, a gap is provided between the fixed rod and the movable rod for the safety belt to pass through.

[0100] Further, the fixed rod is a U-shaped rod, and the movable rod is detachably connected to the top end of the U-shaped rod by a fastener at both ends.

[0101] Further, the safety belt connecting device and the connecting part are made of high-strength metal, alloy, high-strength carbon fiber, high-strength plastic, high-strength nylon, high-strength glass steel, high-strength ceramic, or high-molecular material.

[0102] In summary, the present application has at least one of the following beneficial technical effects:

[0103] 1. By setting a connecting part on a seat or a child safety seat or a safety cushion of a vehicle or an amusement facility, and connecting a safety belt connecting device installed on a safety belt to the connecting part, a safety belt tied according to the existing technical specification can be pulled and fixed on the seat or the safety cushion by the rotating locking type safety belt connecting mechanism, and the pressure of the safety belt on the abdomen of a passenger can be transferred to the thighs, so as to avoid the contraction of the safety belt to press the abdomen of the passenger in a safety accident or braking, and to cause harm and discomfort to people who cannot bear pressure on the abdomen such as pregnant women.

[0104] 2. By setting a sliding groove and a plurality of limiting holes on the connecting part, the connection position of the safety belt connecting device and the connecting part can be adjusted, and the connecting rod of the second connecting end can move in the sliding groove, so as to select the appropriate limiting hole for connection and fixation according to the size and body shape of the abdomen of different passengers. Therefore, the rotating locking type safety belt connecting mechanism of the present application can be applied to passengers of different body shapes, improve the comfort of the passengers, and is convenient to install and operate. At the same time, the safety belt can be bound as close as possible to the position of the root of the thighs of the passenger, and the displacement of the user when braking or in an accident is minimized, so that the safety belt generates binding force in time, and the safety airbag can be triggered in time in a serious accident, so as to improve the safety of the safety mechanism of the present application. The safety belt connecting device and the connecting part of the present application are made of high-strength stainless steel metal or alloy, or high-strength carbon fiber, or high-strength plastic, or high-strength nylon, or high-strength glass steel, or high-strength ceramic, or carbon nanomaterial, or super polymer material, or composite material, or graphene, or high molecular material, which can provide high-strength support and protection to the passenger, and improve the safety performance.

[0105] 3. By setting the first connecting end of the safety belt connecting device as a detachable structure, the safety belt connecting device can be conveniently installed and fixed on the safety belt. By setting an interspace through which the safety belt passes between the fixed rod and the movable rod, the safety belt connecting device can move on the safety belt, which not only facilitates the connection of the safety belt connecting device to the connecting part, but also adjusts the safety belt connecting device to a comfortable position of the passenger, and improves the comfort.

[0106] In a sixth aspect, the present application provides a clamping groove locking type safety belt connecting mechanism installed on a seat or a safety cushion, wherein the seat or the safety cushion is provided with a safety belt, and the clamping groove locking type safety belt connecting mechanism comprises:

[0107] a safety belt connecting device comprising a first connecting end connected to the safety belt and a second connecting end connected to the seat or the safety cushion, wherein the second connecting end comprises a connecting seat and a connecting rod fixed on the first connecting end, and the cross-sectional size of the connecting rod is smaller than that of the connecting seat;

[0108] A connecting part is installed on the seat or safety cushion and used to connect with the second connecting end, the connecting part is provided with a sliding slot and a mounting hole communicating with the sliding slot, the bottom of the sliding slot is provided with a plurality of limiting grooves, the size of the mounting hole and the limiting grooves is matched with the size of the connecting seat, and the width of the sliding slot is matched with the size of the connecting rod.

[0109] The length of the connecting rod is greater than the depth of the sliding slot, the connecting seat passes through the mounting hole, under the external force, the connecting rod is freely slid in the sliding slot, and under the tightening force of the safety belt, the connecting seat is clamped in the corresponding limiting groove after the external force is removed.

[0110] Further, the connecting rod is a cylindrical rod with a length greater than the depth of the sliding slot, and the connecting seat is a disc with a diameter greater than the diameter of the connecting rod.

[0111] Further, the diameter of the mounting hole and the limiting groove is greater than the diameter of the connecting seat.

[0112] Further, the width of the sliding slot is greater than the diameter of the connecting rod and less than the diameter of the connecting seat.

[0113] Further, the thickness of the limiting groove is less than the thickness of the sliding slot.

[0114] Further, the safety belt connecting device is provided with an elastic member for keeping the connecting part away from the connecting part so that the connecting seat is clamped in the limiting groove.

[0115] Further, the elastic member is sleeved around the connecting rod or arranged around the sliding slot, and the thickness of the elastic member is greater than the thickness of the connecting seat.

[0116] Further, the elastic member includes but is not limited to a spring, a spring sheet or a sponge.

[0117] Further, the elastic member is installed around the connecting rod or around the sliding slot by welding, riveting, bolt and screw connection, buckle connection or sticking.

[0118] Further, the first connecting end includes a fixed rod and a movable rod which are detachably connected.

[0119] Further, one end of the fixed rod and the movable rod is connected through a rotating pair, and the other end is detachably connected through a fastener.

[0120] Further, the fixed rod and the movable rod are provided with a gap through which the safety belt passes.

[0121] Further, the fixed rod is a U-shaped rod, and the two ends of the movable rod are detachably connected to the top end of the U-shaped rod through a fastener.

[0122] Further, the seat belt connecting device and the connecting part are made of high-strength metal, alloy, high-strength carbon fiber, high-strength plastic, high-strength nylon, high-strength glass steel, high-strength ceramic or high-molecular material.

[0123] In summary, the present application has at least one of the following beneficial technical effects:

[0124] 1. By providing a connecting part on a safety seat or a child safety seat or a safety cushion of a vehicle or an amusement facility, and connecting a seat belt connecting device installed on a seat belt to the connecting part, the seat belt connected to the abdomen can be fixed on the seat or the safety cushion by the slot locking type seat belt connecting mechanism according to the prior art, and the pressure of the seat belt on the abdomen of the passenger is transferred to the thighs, avoiding the discomfort caused by the contraction of the seat belt pressing the abdomen of the passenger in the event of a safety accident or braking.

[0125] 2. By providing a sliding groove and a plurality of limiting grooves on the connecting part, the connection position of the seat belt connecting device and the connecting part can be adjusted, and the connecting rod of the second connecting end moves in the sliding groove to select the appropriate limiting groove for connection and fixation according to the size and body shape of different passengers. Therefore, the slot locking type seat belt connecting mechanism of the present application can be applied to passengers of different body shapes, improving the comfort of the passengers, and being easy to install and operate. At the same time, the seat belt on the vehicle or the amusement facility can be bound as close as possible to the position of the passenger's thigh root, minimizing the displacement of the user forward in the event of braking or an accident, so that the seat belt generates binding force in time, and the safety airbag can be triggered in time in the event of a serious accident, thereby improving the safety of the safety mechanism of the present application. The seat belt connecting device and the connecting part of the present application are made of high-strength stainless steel metal or alloy or high-strength carbon fiber or high-strength plastic or high-strength nylon, high-strength glass steel or high-strength ceramic or carbon nanomaterial or super polymer material or composite material or graphene or high-molecular material, which can provide high-strength support and protection to the passengers and improve the safety performance.

[0126] 3. By providing the first connecting end of the seat belt connecting device with a detachable structure, the seat belt connecting device can be easily installed and fixed on the seat belt. By providing an interspace for the seat belt to pass between the fixed rod and the movable rod, the seat belt connecting device can move on the seat belt, which not only facilitates the connection of the seat belt connecting device to the connecting part, but also allows the seat belt connecting device to be adjusted to a comfortable position for the passenger, thereby improving the comfort.

[0127] In a seventh aspect, the present application provides a seat belt connecting mechanism installed on a seat or a safety cushion, wherein the seat or the safety cushion is provided with a seat belt, and the seat belt connecting mechanism comprises:

[0128] The safety belt connecting device comprises a connecting end installed on the safety belt and a plug-in end capable of being connected with a seat or a safety cushion, wherein a lock hole is arranged on the plug-in end.

[0129] A connecting part is installed on the seat or the safety cushion, wherein a plurality of plug-in holes capable of being detachably connected with the plug-in end are arranged on the connecting part, and a locking piece for locking the plug-in part is arranged in each plug-in hole.

[0130] Further, the locking piece comprises a gear and a rack arranged in the connecting part and a plurality of locking pins connected with the rack, wherein the number of the locking pins is the same as that of the plug-in holes and the locking pins can be inserted into the lock hole.

[0131] Further, the installation height of the locking pin is the same as the height of the lock hole on the plug-in end inserted into the plug-in hole, and the size of the lock hole is greater than the cross-sectional size of the locking pin.

[0132] Further, the movement direction of the rack is parallel to the axis of the lock hole on the plug-in end inserted into the plug-in hole.

[0133] Further, one end of the rack is engaged with the gear, and the other end is fixed with a connecting rod connecting the locking pins, wherein the number of the locking pins is the same as that of the connecting rods.

[0134] Further, the connecting rod is installed in the middle of the locking pin, one end of the locking pin can be inserted into the lock hole, and the other end is connected to the inner side wall of the connecting part through a spring.

[0135] Further, a gear shaft is connected to the gear, one end of the gear shaft is fixedly connected with the gear, and the other end penetrates out of the connecting part and is fixed with a rotating handle.

[0136] Further, the locking piece is a plurality of safety buckle female buckles arranged in the connecting part, and the lock hole on the plug-in end can be matched with the safety buckle female buckle to form locking.

[0137] Further, the connecting part is spliced by an upper connecting part and a lower connecting part.

[0138] Further, the connecting end and the plug-in end are detachably connected, and a gap through which the safety belt can pass is arranged between the connecting end and the plug-in end.

[0139] In summary, the present application has at least one of the following beneficial technical effects:

[0140] 1. The present application relates to a safety belt connecting device for a seat or a safety seat cushion of a vehicle or an amusement facility, which is connected to a connecting part of the seat or the safety seat cushion, and is connected to a safety belt installed on a safety belt, so that the safety belt is fixed on the seat or the child safety seat or the safety seat cushion, and the pressure of the safety belt on the abdomen of a passenger is transferred to the thighs, thereby avoiding the discomfort caused by the contraction of the safety belt on the abdomen of the passenger in the case of a safety accident or braking. The connecting part is provided with a plurality of insertion holes and locking members, so that the insertion end can be connected to the insertion hole at a suitable position according to the body type of the passenger, and the insertion end is fixed by locking the locking members, which can be applied to passengers of different body types, improve the comfort of use, and can bind the safety belt as close as possible to the position of the thighs of the passenger, thereby reducing the displacement of the passenger forward in the case of braking or an accident, so that the safety belt generates binding force in time, and the safety airbag can be triggered in time in the case of a serious accident, thereby improving the safety performance.

[0141] 2. The locking member is provided in the form of a gear locking type, and the rotation of the gear can drive the locking pin to move to insert into the lock hole on the insertion end inserted into the insertion hole, so as to fix the safety belt connecting device on the connecting part. By setting the locking member in the form of a buckle cooperation type, the connection end inserted into the insertion hole can be safely buckled with the female buckle to form locking. The safety belt connecting mechanism of the present application not only can stably connect the safety belt connecting device with the connecting part on the seat or the safety seat cushion, but also is simple to operate and convenient to disassemble. The safety belt connecting device and the connecting part of the present application are made of high-strength metal, alloy, high-strength carbon fiber, high-strength plastic, high-strength nylon, high-strength glass steel, high-strength ceramic or high-molecular material, which can provide high-strength support and protection for the passenger, and improve the safety performance.

[0142] 3. The safety belt connecting device is provided in a detachable structure, so that the safety belt connecting device can be conveniently installed and fixed on the safety belt. The gap between the connection end and the insertion end is provided for the safety belt to pass through, so that the safety belt connecting device can move on the safety belt, which not only facilitates the connection of the safety belt connecting device to the connecting part, but also can adjust the safety belt connecting device to a comfortable position of the passenger, thereby improving the comfort.

[0143] In an eighth aspect, the present application provides a safety structure for a seat, wherein the seat comprises a safety belt, and the safety structure comprises:

[0144] The seat cushion base plate is a plate-shaped structure arranged on the seat and used for bearing weight. A U-shaped connecting part is integrally formed on the seat cushion base plate at a position between the two legs. The U-shaped connecting part comprises a horizontal bottom surface, a U-shaped inner side surface and a U-shaped outer side surface. The U-shaped outer side surface is integrally formed with the seat cushion base plate on both sides thereof. The horizontal bottom surface is connected with the U-shaped inner side surface to jointly form a U-shaped space. The horizontal bottom surface is located higher than the seat cushion base plate on both sides of the U-shaped connecting part, so that a hollow structure is formed below the U-shaped connecting part.

[0145] The safety belt connecting device comprises a first connecting end for connecting with the safety belt and a second connecting end capable of connecting with the U-shaped connecting part in the U-shaped space.

[0146] A buffer layer is arranged to wrap the seat cushion base plate to form a seat cushion.

[0147] A collision protection pad is arranged on the seat cushion base plate at a position close to the user on one side of the U-shaped connecting part. The collision protection pad is used for restraining the safety belt to form a surface contact with the user's thigh root and lower abdomen bottom, so as to prevent the safety belt from cutting the user.

[0148] Further, the U-shaped connecting part is formed in the middle of the seat cushion base plate by stamping or a one-step forming process. The one-step forming process is casting, or forging, or 3D printing, or mechanical processing, or injection molding, selective laser melting, or selective laser sintering, or metal deposition, or blow molding, or injection molding, or calendering, or suction molding, or mold pressing, or lamination, or thermoforming, or vacuum forming, or rotational molding, RTM (resin transfer molding) molding, autoclave (AC) molding, oven molding, extrusion molding, mold pressing, molding, pultrusion molding, filament winding molding, injection molding and contact molding process.

[0149] Further, the depth of the U-shaped inner side surface is not less than the height of the safety belt connecting device, so that the U-shaped inner side surface and the U-shaped outer side surface surround and protect the safety belt connecting device connected with the U-shaped connecting part.

[0150] Further, the U-shaped connecting part further comprises a top surface. The connection between the top surface and the U-shaped inner side surface and the U-shaped outer side surface is a smooth round corner connection. The U-shaped inner side surface and the U-shaped outer side surface are both three-surface slope type gradually convex shapes.

[0151] Further, an upward protruding part is arranged on the seat cushion base plate at a position outside the two legs. A clamping sleeve is mounted below the protruding part. The two ends of the clamping sleeve are fixed to the bottom of the seat cushion base plate and the end of the protruding part, respectively, to form a hollow structure installation groove below the protruding part.

[0152] Further, a length-adjustable connecting assembly is installed in the mounting slot, which can be connected to the ISOFIX interface of the International Standards Organization FIX (ISOFIX) child safety seat fixing system.

[0153] Further, the second connecting end comprises a connecting seat and a connecting rod fixed at the connecting seat and the first connecting end respectively, and a mounting hole and a plurality of limiting members are arranged on the horizontal bottom surface of the U-shaped connecting part and communicated by a sliding groove, the connecting seat can pass through the mounting hole, and the connecting rod can freely slide in the sliding groove and be clamped and fixed by the limiting members when sliding to a suitable position.

[0154] Further, the connecting rod is a cylindrical rod with two opposite faces cut into planes, the connecting seat is a disc with a diameter greater than that of the arc face of the connecting rod, and the limiting members are a plurality of limiting holes distributed at intervals on the horizontal bottom surface.

[0155] The width of the sliding groove is greater than the distance between the two planes of the connecting rod and less than the diameter of the arc face, and the size of the limiting hole is greater than the diameter of the arc face of the connecting rod and less than the diameter of the connecting seat, so that the connecting rod can freely slide in the sliding groove in the direction of the two planes, and when rotating to the width of the arc face under the action of an external force, it is clamped in the limiting hole.

[0156] Further, the connecting rod is a cylindrical rod with a length greater than the depth of the sliding groove, the connecting seat is a disc with a diameter greater than that of the connecting rod, and the limiting members are a plurality of limiting grooves distributed at intervals on the bottom of the sliding groove.

[0157] Further, the diameter of the mounting hole and the limiting groove is greater than the diameter of the connecting seat, the width of the sliding groove is greater than the diameter of the connecting rod and less than the diameter of the connecting seat, and under the action of an external force, the connecting rod can freely slide in the sliding groove, and after the external force is removed, the connecting seat is clamped in the corresponding limiting groove under the tightening force of the safety belt.

[0158] Further, a height-adjustable pad is installed below the cushion base plate through a connecting piece, and the connecting piece is a connecting hole, a connecting groove or a connecting block arranged on the cushion base plate.

[0159] In summary, the present application has at least one of the following beneficial technical effects:

[0160] 1. By setting the cushion base plate into a plate structure, the structural strength of the safety cushion of the application can be improved, and better protection can be provided to passengers whose abdomen cannot be pressed; by setting a U-shaped connecting part integrally formed with the cushion base plate at the position between the two legs on the cushion base plate, and detachably connecting the safety belt connecting device installed on the safety belt with the U-shaped connecting part, the safety belt located on the abdomen when normally buckled can be pulled and fixed between the thighs of the passenger, avoiding the abdomen of the passenger being pressed, and the safety belt connecting device connected with the U-shaped connecting part can be buried in the U-shaped space surrounded by the horizontal bottom surface and the inner side surface of the U-shaped connecting part, which can prevent the safety belt connecting device from causing secondary injury to the passenger; compared with installing a safety belt connecting device protection cover on the cushion base plate, the design of integrally forming the U-shaped connecting part with the cushion base plate of the application not only ensures the structural strength of the safety cushion, but also reduces the thickness and production cost of the safety cushion; by laying a buffer layer, not only can the protection cover be prevented from causing injury to the passenger, but also the comfort of riding can be improved; by adjusting the safety belt connected between the thighs with the anti-collision protection pad, the middle part of the safety belt forms a surface contact with the root of the thigh and the bottom of the lower abdomen of the user, which not only improves the comfort of the user, but also avoids the side edge of the safety belt from cutting the user.

[0161] 2. By setting the inner side surface and the outer side surface of the U-shaped part as three-slope gradually convex side surfaces, and setting the connection between the top surface and the inner side surface and the outer side surface of the U-shaped part as a smooth round corner connection, the impact pressure can be released and relieved, and direct impact between the passenger and the U-shaped cover can be avoided when the vehicle, the transportation tool or the amusement facility collides, to protect the safety of the passenger.

[0162] 3. By setting a sliding groove and a plurality of limiting holes or limiting grooves on the horizontal bottom surface of the U-shaped connecting part, the connection position of the safety belt connecting device with the horizontal bottom surface can be adjusted, and the connecting rod of the second connecting end moves in the sliding groove to select the appropriate limiting groove for connection and fixation according to the size of the abdomen and the body type of different passengers, so that the safety structure of the application can be applied to passengers of different body types, improve the comfort of the passengers, and is convenient to install and operate, and at the same time, the safety belt can be bound as close as possible to the position of the root of the thigh of the passenger, to reduce the displacement of the user when braking or in an accident, so that the safety belt can generate binding force in time, and the safety airbag can be triggered in time to open in a serious accident, to improve the safety of the safety cushion of the application.

[0163] 4. The safety cushion of the present application can be installed on the rear seat with the ISOFIX interface or LATCH interface of the child safety seat fixing system through the hook which can be detachably connected with the ISOFIX interface or LATCH interface of the child safety seat fixing system installed at one end of the fixing belt which passes through the cushion base plate; and the fixing belt can also be externally connected with the connecting belt with buckles to fix the cushion on the backrest of the front seat, so that the safety cushion of the present application can be installed on both the front seat and the rear seat.

[0164] In a ninth aspect, the present application provides a safety structure for preventing abdominal compression, which is arranged on a seat, the seat comprising a safety belt, the safety structure comprising:

[0165] a base plate, which is a plate-shaped structure arranged on the seat and used for bearing weight, a receiving space being arranged at the bottom of the front end of the base plate and located between the two legs, a plurality of grooves being arranged at the top of the receiving space, and a first connecting hole being arranged at the bottom of each groove and penetrating the base plate from top to bottom;

[0166] a safety belt connecting mechanism, which comprises a first fixing belt arranged in the receiving space, a fixing belt adjuster used for adjusting the length of the first fixing belt, and a safety belt connecting piece arranged in the groove, the first fixing belt being connected with a second fixing belt which can pass through the first connecting hole and be fixed with the safety belt connecting piece, and the safety belt connecting piece being detachably connected with the safety belt; and

[0167] a crash protection pad, which is arranged on the base plate and located on the side of the receiving space close to the user, and used for restraining the safety belt to form a surface contact with the user's thigh root and the bottom of the lower abdomen to prevent the user from being cut by the side edge of the safety belt.

[0168] Further, the size of the groove is greater than the size of the safety belt connecting piece, and the size of the first connecting hole is greater than the cross-sectional size of the second fixing belt and smaller than the size of the safety belt connecting piece.

[0169] Further, the base plate is provided with a first space at the position between the two legs, a cavity at the bottom of the first space forming the receiving space, and a connecting device arranged on the base plate and used for fixing the safety structure.

[0170] Further, the base plate is provided with a hip cavity at the top and a bottom cavity at the bottom which communicates with the receiving space, a second connecting hole being arranged between the bottom of the hip cavity and the bottom cavity and penetrating the base plate, and two first mounting grooves being arranged on the rear side wall of the hip cavity and penetrating to the rear part of the base plate; the connecting device comprising a ring buckle, a third fixing belt and a fourth fixing belt.

[0171] The ring buckle is arranged in the hip cavity, the first fixed band end extends to the bottom cavity and is fixed on the ring buckle after passing through the second connecting hole, and the third fixed band and the fourth fixed band are fixed on the ring buckle and respectively pass through the two first installation grooves and extend to the back of the base plate for being connected with the seat.

[0172] Further, one end of the third fixed band and the fourth fixed band extending out of the base plate is provided with a first hook capable of being detachably connected with the ISOFIX interface of the child safety seat fixing system.

[0173] Further, the second space is provided with a second installation groove formed by a hollow structure below the second space, and the connecting device is a length-adjustable connecting assembly installed in the second installation groove, which can pass out of the back of the base plate and be detachably connected with the ISOFIX interface of the child safety seat fixing system.

[0174] Further, the connecting assembly is a seat cushion fixing band or an ISOFIX hard interface connecting piece of the child safety seat fixing system, and one end of the seat cushion fixing band or the ISOFIX hard interface connecting piece of the child safety seat fixing system extending out of the safety structure is respectively provided with a second hook or a buckle capable of being detachably connected with the ISOFIX interface of the child safety seat fixing system.

[0175] Further, the safety belt connecting piece is a hook or a lock.

[0176] Further, the safety structure further comprises a buffer layer and a wrapping layer wrapping the base plate to form a seat cushion.

[0177] Further, a height-adjusting pad is installed below the seat cushion base plate through a connecting piece, and the connecting piece is a connecting hole, a connecting groove or a connecting block arranged on the seat cushion base plate.

[0178] In summary, the present application has at least one of the following beneficial technical effects:

[0179] 1. By setting the substrate into a plate structure, the structural strength of the safety structure of the present application can be improved, and better protection can be provided for passengers whose abdomen cannot be pressed. By setting a receiving space between the legs on the substrate, the safety belt connector installed on the first fixing belt can be connected with the safety belt, and the safety belt located on the abdomen when normally fastened can be pulled and fixed between the thighs of the passenger, so as to avoid the abdomen of the passenger being pressed. By setting the safety belt connector in the plurality of grooves, the safety belt connector can be connected with the safety belt according to the size of the abdomen and the body type of different passengers. This not only improves the comfort of the passengers, but also binds the safety belt as close as possible to the position of the root of the thigh of the passenger, reduces the displacement of the passenger when braking or in an accident, and can timely trigger the opening of the airbag in the event of a serious accident, so as to protect the safety of people whose abdomen cannot be pressed, such as pregnant women or people who have had abdominal surgery, thereby improving the safety of the safety structure of the present application. By hiding the safety belt connector in the groove, secondary injury to the passenger caused by the safety belt connector can be prevented. By adjusting the length of the first fixing belt through the fixing belt adjuster, the connection and disconnection of the safety belt connector and the safety belt can be facilitated, the safety belt connector can be tightened to hide in the groove, the safety performance can be improved, and the tightness of the safety belt connecting mechanism can be adjusted according to the size of the abdomen and the body type of different passengers, thereby improving the comfort of the safety structure of the present application. By adjusting the safety belt connected between the thighs through the anti-collision protection pad, the middle part of the safety belt forms a surface contact with the root of the thigh and the bottom of the abdomen of the user, which not only improves the comfort of the user, but also avoids the side edge of the safety belt from cutting the user.

[0180] 2. The safety structure of the present application can be detachably connected with the ISOFIX interface of the child safety seat fixing system through the third fixing belt and the fourth fixing belt or the connecting assembly located below the protruding part on the outer side of the two legs, so as to install the safety structure on the rear seat. And a connecting belt with a buckle can be externally connected to fix the cushion on the backrest of the front seat, so that the safety structure of the present application can be installed on both the front seat and the rear seat.

[0181] 3. By setting an upward protruding part at the position between the two legs at the bottom of the substrate, the cavity at the bottom of the protruding part forms a receiving space, the area of the receiving space can be increased without increasing the thickness of the substrate, so that the safety structure of the present application is suitable for different space vehicles or amusement facilities. By setting a plurality of through holes on the left and right sides of the middle part of the substrate, the substrate forms a hollow structure, and a hip cavity and a bottom cavity are respectively arranged at the rear end and the bottom of the substrate, which greatly reduces the weight of the safety structure, realizes lightweight design, and makes the safety structure of the present application easy to carry.

[0182] In a ninth aspect, the present application provides a sliding rod fixed safety structure, which is arranged on a seat. The seat comprises a safety belt, and the safety structure comprises:

[0183] a substrate, which is a plate-shaped structure arranged on the seat and used for bearing weight;

[0184] a seat belt connecting mechanism, which is used for detachably fixing the seat belt on the substrate between the two legs; and

[0185] a U-shaped cover, which is arranged on the substrate and used for forming a receiving space in which the seat belt connecting mechanism is wrapped and protected;

[0186] The seat belt connecting mechanism comprises a plurality of slots arranged on the substrate, a sliding rod capable of sliding in and out of the slots, and a sliding mechanism for driving the sliding rod to slide in and out of the slots. When the sliding rod is driven by the sliding mechanism to slide out of the slots, the seat belt or a sub-buckle on the seat belt is pulled into the slots by an external force, and then the seat belt or the sub-buckle on the seat belt is fixed in the slots by driving the sliding rod into the slots by the sliding mechanism, so as to realize the pulling and fixing of the seat belt on the substrate between the two legs.

[0187] The U-shaped cover is arranged on the seat belt connecting mechanism to form a wrapping protection, which not only ensures the detachability of the seat belt connecting mechanism, but also ensures the safety of the user. BRIEF DESCRIPTION OF DRAWINGS

[0188] FIG. 1 is a schematic diagram of the entire safety seat cushion according to Embodiment 1 of the present application.

[0189] FIG. 2 is a schematic diagram of the exploded safety seat cushion according to Embodiment 1 of the present application.

[0190] FIG. 3 is a schematic diagram of the protective cover according to Embodiment 1 of the present application.

[0191] FIG. 4 is a schematic diagram of the bottom of the safety seat cushion according to Embodiment 1 of the present application.

[0192] FIG. 5 is a schematic diagram of the installation of the seat cushion fixing assembly in the base according to Embodiment 1 of the present application.

[0193] FIG. 6 is a schematic diagram of the entire safety seat cushion according to Embodiment 2 of the present application.

[0194] FIG. 7 is a schematic diagram of the safety seat cushion without the elastic buffer layer according to Embodiment 2 of the present application.

[0195] FIG. 8 is a schematic diagram of the partial section of the flat plate in the U-shaped connecting space according to Embodiment 2 of the present application.

[0196] FIG. 9 is a schematic diagram of the seat cushion fixing assembly as an ISOFIX hard interface connecting piece according to Embodiment 3 of the present application.

[0197] FIG. 10 is a schematic diagram of a sub-buckle according to Embodiment 3 of the present application.

[0198] Fig. 11 is a schematic view of a safety seat cushion with a height- increasing pad according to an embodiment of the present application.

[0199] Embodiment 1: 100a - base, 110a - rim, 111a - raised plate, 120a - support, 130a - first mounting space, 131a - first gap, 140a - second mounting space, 141a - second gap; 150a - stiffening rib;

[0200] 200a - flat plate, 210a - rectangular slot;

[0201] 300a - protective cover, 310a - horizontal bottom surface, 311a - mounting hole, 312a - rim, 320a - U-shaped inner side surface, 330a - U-shaped outer side surface, 340a - top surface;

[0202] 400a - elastic cushion layer, 410a - first elastic layer, 420a - second elastic layer.

[0203] 500a - seat cushion fixing assembly, 510a - fixing strap, 520a - hook, 530a - fixing strap adjuster, 540a - hanging rod;

[0204] 600a - sub-buckle, 610a - female buckle, 611a - fixing member, 620a - connecting end, 621a - flat ring, 622a - sliding slot, 623a - opening and closing rod, 624a - threaded sleeve, 625a - rotating shaft, 626a - first connecting end, 627a - second connecting end, 628a - first limiting protrusion, 629a - second limiting protrusion, 630a - insertion end, 631a - insertion hole.

[0205] Embodiment 2: 110a - base;

[0206] 210a - flat plate, 211a - circular slot, 212a - sliding slot, 221a - U-shaped connecting space, 231a - gap space.

[0207] 700a - height-increasing pad.

[0208] Fig. 12 is a schematic view of the overall structure of a safety structure for preventing abdominal compression on a seat according to an embodiment of the present application;

[0209] Fig. 13 is a front cross-sectional view of a safety structure for preventing abdominal compression on a seat according to an embodiment of the present application;

[0210] Fig. 14 is a side cross-sectional view of a safety structure for preventing abdominal compression on a seat according to an embodiment of the present application;

[0211] Fig. 15 is a schematic view of a safety belt connected to a connecting portion;

[0212] Fig. 16 is a schematic view of a use state of a long strip-shaped anti-collision protective pad.

[0213] Figure 17 is a schematic diagram of the use state of the triangular anti-collision protection pad;

[0214] Figure 18 is a schematic diagram of the top structure of the U-shaped cover in Example 5;

[0215] Figure 19 is a schematic diagram of the front structure of the U-shaped cover in Example 5;

[0216] Figure 20 is a schematic diagram of the connection part structure in Example 5;

[0217] Figure 21 is a schematic diagram of the seat belt connecting device structure in Example 5;

[0218] Figure 22 is a schematic diagram of the seat belt connecting device structure in Example 6;

[0219] Figure 23 is a schematic diagram of the top structure of the connection part in Example 6;

[0220] Figure 24 is a schematic diagram of the bottom structure of the connection part in Example 6;

[0221] Figure 25 is a schematic diagram of the overall structure of the safety structure for preventing abdominal compression on the seat in Example 7;

[0222] Figure 26 is a schematic diagram of the front cross-sectional view of the safety structure for preventing abdominal compression on the seat in Example 7;

[0223] Figure 27 is a schematic diagram of the side cross-sectional view of the safety structure for preventing abdominal compression on the seat in Example 7;

[0224] Figure 28 is a schematic diagram of the top structure of the U-shaped cover in Example 7;

[0225] Figure 29 is a schematic diagram of the cross-sectional view along the center line in Figure 28.

[0226] Reference signs:

[0227] 100 - seat cushion base plate, 110 - connection part, 111 - mounting hole, 112 - limiting hole, 113 - sliding groove, 114 - front wall, 115 - limiting groove, 120 - first protrusion, 130 - second space, 140 - clamping sleeve, 150 - mounting groove, 160 - cushion block, 170 - connecting hole;

[0228] 200 - seat belt connecting device, 210 - first connecting end, 211 - fixed rod, 212 - movable rod, 220 - second connecting end, 221 - connecting seat, 222 - connecting rod;

[0229] 300 - U-shaped cover, 310 - horizontal bottom surface, 320 - U-shaped inner side surface, 330 - U-shaped outer side surface, 340 - top surface, 350 - vertical side surface;

[0230] 400 - cushioning layer, 500 - impact protection pad, 600 - wrapping layer, 700 - seat belt.

[0231] FIG. 30 is a schematic diagram of an overall structure of a safety structure in Example 8;

[0232] FIG. 31 is a schematic diagram of a front cross-sectional structure of the safety structure in Example 8;

[0233] FIG. 32 is a schematic diagram of a side cross-sectional structure of the safety structure in Example 8;

[0234] FIG. 33 is a schematic diagram of a structure of a spring-type locking device in Example 8;

[0235] FIG. 34 is a cross-sectional view in the direction of A-A in FIG. 33;

[0236] FIG. 35 is a schematic diagram of an overall structure of a U-shaped cover in Example 8;

[0237] FIG. 36 is a schematic diagram of a front view structure of the U-shaped cover in Example 8;

[0238] FIG. 37 is a schematic diagram of a side view structure of the U-shaped cover in Example 8;

[0239] FIG. 38 is a schematic diagram of a side cross-sectional structure of a safety structure in Example 9;

[0240] FIG. 39 is a schematic diagram of a structure of a dial-type locking device in Example 9;

[0241] FIG. 40 is a schematic diagram of a side cross-sectional structure of a safety structure in Example 10;

[0242] FIG. 41 is a schematic diagram of a side cross-sectional structure of a safety structure in Example 11.

[0243] FIG. 42 is a detailed schematic diagram of a locking device in Example 12.

[0244] FIG. 43 is a detailed schematic diagram of a locking device in Example 13.

[0245] FIG. 44 is a schematic diagram of a seat cushion substrate integrally formed in Example 14.

[0246] Reference numerals:

[0247] 100b - seat cushion substrate, 110b - mounting seat, 120b - first space, 130b - second space, 131b - ISOFIX hard interface connector, 140b - mounting groove, 150b - seat cushion fixing belt, 160b - through hole, 170b - height adjustment pad mounting hole, 180b - hook connection hole;

[0248] 200b - safety belt connecting mechanism; 210b - hook, 211b - fixed end, 212b - connecting end, 220b - locking device, 221b - fixed sleeve, 2211b - vertical sliding slot, 2212b - horizontal sliding slot, 222b - spring, 223b - piston, 2231b - adjusting rod, 224b - nut, 225b - screw rod, 226b - handle, 227b - barb, 228b - threaded sleeve;

[0249] 300 - U-shaped cover, 310 - horizontal bottom surface, 320 - inner U-shaped surface, 330 - outer U-shaped surface, 340 - top surface, 350 - vertical side surface, 360 - first mounting hole, 370 - second mounting hole, 380 - third mounting hole;

[0250] 400 - buffer layer, 500 - anti-collision protection pad, 600b - seat cushion tail filler block.

[0251] Fig. 45 is a schematic diagram of the overall structure of a quick-release type seat safety structure in Example 15;

[0252] Fig. 46 is a front cross-sectional view of the quick-release type seat safety structure in Example 15;

[0253] Fig. 47 is a side cross-sectional view of the quick-release type seat safety structure in Example 15;

[0254] Fig. 48 is a top view of the U-shaped cover in Example 15;

[0255] Fig. 49 is a front view of the U-shaped cover in Example 15;

[0256] Fig. 50 is a schematic diagram of the safety belt connecting device structure in Example 15;

[0257] Fig. 51 is a schematic diagram of the safety belt connecting device structure in Example 16;

[0258] Fig. 52 is a schematic diagram of the safety belt connecting device structure in Example 17;

[0259] Fig. 53 is a schematic diagram of the safety belt connecting device structure in Example 18;

[0260] Fig. 54 is an exploded schematic diagram of the full belt connecting device in Example 18;

[0261] Fig. 55 is a schematic diagram of the overall structure of a quick-release type seat safety structure in Example 19;

[0262] Fig. 56 is a front cross-sectional view of the quick-release type seat safety structure in Example 19;

[0263] Fig. 57 is a side cross-sectional view of the quick-release type seat safety structure in Example 19;

[0264] Fig. 58 is a top structural schematic diagram of the U-shaped cover in Example 19;

[0265] Fig. 59 is a sectional view along the center line in Fig. 58;

[0266] Fig. 60 is an exploded schematic diagram of the full belt connection device in Example 20;

[0267] Fig. 61 is an exploded schematic diagram of the full belt connection device in Example 21;

[0268] Fig. 62 is an exploded schematic diagram of the full belt connection device in Example 22.

[0269] Reference signs:

[0270] 100 - cushion base plate, 110 - first connecting part, 114 - front wall, 120 - first protrusion, 121 - first slot, 130 - second space, 140 - sleeve, 150 - mounting slot, 160 - cushion block, 170 - connecting hole, 180 - female buckle;

[0271] 200 - safety belt connection device, 210 - connecting end, 211 - fixed part, 212 - movable part, 213 - ear plate, 214 - fastener, 215 - bolt, 216 - gap;

[0272] 217 - flat ring, 218 - opening and closing rod, 219 - threaded sleeve;

[0273] 220 - plug-in end, 221 - lock hole;

[0274] 230 - connecting plate, 231 - plug-in part, 232 - second connecting part, 233 - strip-shaped slot, 234 - second notch, 235 - central axis;

[0275] 240 - fixed shell, 241 - half shell, 242 - sunken groove, 243 - through groove;

[0276] 250 - sliding groove;

[0277] 261 - single ear hole, 262 - double ear hole, 263 - rotating shaft, 264 - nut;

[0278] 300 - U-shaped cover, 310 - horizontal bottom surface, 311 - second slot, 320 - U-shaped inner side surface, 330 - U-shaped outer side surface, 340 - top surface, 350 - vertical side surface;

[0279] 400 - buffer layer, 500 - anti-collision protection pad, 600 - wrapping layer, 700 - safety belt.

[0280] Fig. 63 is a whole structural schematic diagram of the safety belt connection device in Example 23 of the present application;

[0281] Fig. 64 is a schematic diagram of the overall structure of the connection part of the present application;

[0282] Fig. 65 is a schematic diagram of the overall structure of the seat belt connection device in Embodiment 24 of the present application;

[0283] Fig. 66 is a schematic diagram of the overall structure of the seat belt connection device in Embodiment 25 of the present application;

[0284] Fig. 67 is a schematic diagram of the overall structure of the seat belt connection device in Embodiment 26 of the present application.

[0285] Reference Signs:

[0286] 100 - seat belt connection device, 110 - first connection end, 111 - fixed rod, 112 - movable rod, 113 - rotational pair, 114 - fastener, 115 - gap, 116 - first space, 117 - second space, 118 - third protrusion, 120 - second connection end, 121 - connection seat, 122 - connection rod;

[0287] 200 - connection part, 210 - mounting hole, 220 - limiting hole, 230 - sliding groove.

[0288] Fig. 68 is a schematic diagram of the overall structure of the seat belt connection device in Embodiment 27 of the present application;

[0289] Fig. 69 is a schematic diagram of the top structure of the connection part of the present application;

[0290] Fig. 70 is a schematic diagram of the bottom structure of the connection part of the present application;

[0291] Fig. 71 is a schematic diagram of the overall structure of the seat belt connection device in Embodiment 28 of the present application;

[0292] Fig. 72 is a schematic diagram of the overall structure of the seat belt connection device in Embodiment 29 of the present application;

[0293] Fig. 73 is a schematic diagram of the overall structure of the seat belt connection device in Embodiment 30 of the present application.

[0294] Reference Signs:

[0295] 100 - seat belt connection device, 110 - first connection end, 111 - fixed rod, 112 - movable rod, 113 - rotational pair, 114 - fastener, 115 - gap, 116 - first space, 117 - second space, 118 - third protrusion, 120 - second connection end, 121 - connection seat, 122 - connection rod, 123 - elastic member;

[0296] 200 - connection part, 210 - mounting hole, 220 - limiting groove, 230 - sliding groove.

[0297] Fig. 74 is a schematic diagram of the overall structure of the seat belt connection device in Embodiment 31;

[0298] Fig. 75 is a schematic diagram of the overall structure of the connection portion in Embodiment 31;

[0299] Fig. 76 is a schematic diagram of the internal structure of the connection portion in Embodiment 31;

[0300] Fig. 77 is a sectional view in the A-A direction of Fig. 76;

[0301] Fig. 78 is a sectional view in the B-B direction of Fig. 76;

[0302] Fig. 79 is a sectional view in the C-C direction of Fig. 78;

[0303] Fig. 80 is a schematic diagram of the structure of the gear shaft in Embodiment 31;

[0304] Fig. 81 is a schematic diagram of the structure of the rack in Embodiment 31;

[0305] Fig. 82 is a schematic diagram of the overall structure of the connection portion in Embodiment 32.

[0306] Reference Signs:

[0307] 100 - seat belt connection device, 110 - connection end, 111 - fixed member, 112 - movable member, 113 - ear plate, 114 - fastening member, 115 - bolt, 116 - gap; 120 - insertion end, 121 - lock hole;

[0308] 200 - connection portion, 210 - insertion hole, 220 - gear, 230 - rack, 240 - lock pin, 241 - mounting hole, 242 - connection rod, 250 - spring, 260 - gear shaft, 261 - rotating handle, 262 - threaded hole, 270 - upper connection portion, 280 - lower connection portion, 290 - seat belt buckle female.

[0309] Fig. 83 is a schematic diagram of the overall structure of a safety structure for a seat in Embodiment 33;

[0310] Fig. 84 is a front sectional view of a safety structure for a seat in Embodiment 33;

[0311] Fig. 85 is a side sectional view of a safety structure for a seat in Embodiment 33;

[0312] Fig. 86 is a schematic diagram of the front structure of a U-shaped connection portion in Embodiment 33;

[0313] Fig. 87 is a schematic diagram of the horizontal bottom surface of a U-shaped connection portion in Embodiment 33;

[0314] Fig. 88 is a schematic diagram of the structure of a seat belt connection device in Embodiment 33.

[0315] Reference signs:

[0316] 100 - cushion base plate, 110 - U-shaped connecting part, 111 - horizontal bottom surface, 1111 - mounting hole, 1112 - sliding slot, 1113 - limiting hole, 112 - top surface, 113 - U-shaped inner side surface, 114 - U-shaped outer side surface, 115 - top plate, 120 - protruding part, 130 - clamping sleeve, 140 - mounting slot, 150 - through hole, 160 - connecting hole;

[0317] 200 - safety belt connecting device, 210 - first connecting end, 211 - fixed rod, 212 - movable rod, 213 - rotating pair, 214 - fastener, 215 - gap, 220 - second connecting end, 221 - connecting seat, 222 - connecting rod;

[0318] 300 - buffer layer, 400 - anti-collision protection pad.

[0319] Fig. 89 is a schematic diagram of the use state of a safety structure for preventing abdominal compression in embodiment 34;

[0320] Fig. 90 is a schematic diagram of the overall structure of a safety structure for preventing abdominal compression in embodiment 34;

[0321] Fig. 91 is a schematic diagram of the bottom structure of a safety structure for preventing abdominal compression in embodiment 34;

[0322] Fig. 92 is a schematic diagram of the overall structure of a fixing belt adjuster of the present application;

[0323] Fig. 93 is a schematic diagram of the structure of a pressing piece of the present application;

[0324] Fig. 94 is a schematic diagram of the use state of a safety structure for preventing abdominal compression in embodiment 35;

[0325] Fig. 95 is a schematic diagram of the front view structure of a safety structure for preventing abdominal compression in embodiment 35;

[0326] Fig. 96 is a schematic diagram of the rear view structure of a safety structure for preventing abdominal compression in embodiment 35.

[0327] Reference signs:

[0328] 100 - base plate, 110 - receiving space, 120 - sink groove, 121 - first connecting hole, 130 - first protruding part, 140 - buttock recess, 141 - first mounting slot, 150 - bottom recess, 160 - second connecting hole, 170 - through hole, 180 - third connecting hole, 190 - second protruding part, 191 - second mounting slot;

[0329] 200 - fixing belt adjuster, 210 - base, 211 - bottom plate, 212 - side plate, 220 - pressing piece, 221 - pressing handle, 222 - lock body, 223 - engaging tooth, 230 - connecting shaft;

[0330] 300 - safety belt connecting piece, 400 - ring buckle, 410 - first fixing belt, 420 - second fixing belt, 430 - third fixing belt, 440 - fourth fixing belt, 450 - first hook, 500 - anti-collision protection pad, 600 - safety belt.

[0331] Figure 97 is a schematic diagram of a safety structure for preventing abdominal compression in embodiment 36.

[0332] Figure 98 is a schematic diagram of a state in which a sliding rod is inserted into a slot in embodiment 36.

[0333] Figure 99 is a schematic diagram of a state in which a sliding rod exits a slot in embodiment 36.

[0334] 100 - base plate;

[0335] 200 - safety belt connecting mechanism, 210 - slot, 220 - sliding rod, 221 - handle, 230 - sliding mechanism, 231 - accommodating groove, 232 - blocking piece, 233 - spring;

[0336] 300 - U-shaped cover, 310 - horizontal bottom surface, 320 - inner side surface of U shape, 330 - outer side surface of U shape, 340 - top surface. Embodiments of the present application

[0337] In order to deepen the understanding of the present application, the present application will be further described in conjunction with the embodiments below, which are only used to explain the present application and do not constitute a limitation on the protection scope of the present application.

[0338] The present application will be further described in detail below in conjunction with the accompanying drawings.

[0339] Embodiment 1, as shown in Figures 1 and 2, the present application provides a safety cushion, comprising:

[0340] The base 100a is provided with a plurality of supporting members 120a;

[0341] The flat plate member 210a is covered on the base 100a and is supported and fixed by the supporting members 120a, and is provided with a plurality of connecting grooves;

[0342] The protective cover 300a is fixed on the flat plate member 210a and is used to form a connecting space around the connecting grooves; and

[0343] The elastic buffer layer 400a is arranged on the flat plate member 210a.

[0344] The application replaces the cushion base plate in the prior art with the combination of the base 100a and the flat plate 210a, creates a connecting space between the flat plate 210a and the base 100a by the supporting function of the support 120a, reduces the manufacturing difficulty and cost, and the flat plate 210a of the application is connected with the base 100a through the support 120a, the torsion resistance of the flat plate 210a is improved through the dispersed multi-point fixing of the support 120a, so that the application can adopt a thinner metal plate to obtain better overall mechanical properties and further reduce the material cost; the base 100a of the application can be manufactured by plastic injection molding, which is low in cost and high in production efficiency; the flat plate 210a of the application is a plate-shaped structure that only needs to be simply drilled, which is easy to process and low in processing cost; and by being flat, the entire safety cushion is relatively flat, so that even if the size of the car cushion is limited, the thigh has a suitable moving space on the safety cushion, and discomfort caused by the thigh being stuck is avoided.

[0345] For example, the support is a support column, a support block or any other connecting structure.

[0346] In some embodiments, the top of the support 120a is provided with a threaded hole, and the flat plate 210a is provided with a corresponding hole or threaded hole, so that the flat plate 210a can be quickly and firmly installed on the base 100a by screwing a screw or a bolt into the threaded hole at the top of the support 120a, and the combination of the two has high mechanical strength to meet the impact resistance requirement when the car brakes urgently.

[0347] In some embodiments, as shown in FIG. 2, the base 100a is provided with a plurality of longitudinal and transverse intersecting stiffening ribs 150a to increase the overall mechanical properties of the base 100a.

[0348] In some embodiments, the base 100a can be made of low-cost materials such as plastic bases, and the flat plate 210a can be made of metal plates that are easy to bend or stamp.

[0349] In some embodiments, as shown in FIGS. 1 and 2, the base 100a is provided with a surrounding edge 110a around the periphery, which not only increases the torsion resistance of the base 100a, but also relatively separates the space between the base 100a and the flat plate 210a from the outside environment to prevent foreign matter from entering.

[0350] In some embodiments, as shown in FIG. 3, the protective cover 300a is a U-shaped cover including a horizontal bottom surface 310a, a U-shaped inner side surface 320a, a U-shaped outer side surface 330a, and a top surface 340a, the horizontal bottom surface 310a is provided with a mounting hole 311a corresponding to the connecting groove, and the U-shaped inner side surface 320a and the U-shaped outer side surface 330a are both three-surface slope gradually convex shapes; the U-shaped cover of the present application can be formed by bending, stamping, pouring, etc., and has the characteristics of simple processing and low cost.

[0351] For example, the outer periphery of the U-shaped cover is provided with a rim 312a, and the U-shaped cover can be fixed on the flat plate 210a by welding or screwing or riveting at the rim 312a.

[0352] In some embodiments, as shown in FIGS. 2 and 3, the U-shaped cover front end is not provided with a side surface to reduce manufacturing difficulty, and the surrounding edge 110a of the base 100a is provided with a raised plate 111a corresponding to the U-shaped cover front end to block the front end gap of the U-shaped cover to avoid foreign matter from entering.

[0353] In some embodiments, as shown in FIG. 1, the base 100a is provided with a seat cushion fixing assembly 500a near the bottom of both sides, as shown in FIGS. 4 and 5, the present application provides a mounting schematic diagram of a seat cushion fixing assembly 500a, the seat cushion fixing assembly 500a includes a fixing belt 510a, a hook 520a, and a fixing belt adjuster 530a, the base 100a is inwardly recessed at both sides of the front end to form a first mounting space 130a exposing the flat plate 210a, the fixing belt adjuster 530a is fixed on the flat plate 210a exposed in the first mounting space 130a, the surrounding edge 110a near the rear end of the first mounting space 130a is provided with a first gap 131a for the fixing belt 510a to pass through, the bottom of the base 100a at both sides of the rear end is upwardly recessed to form a second mounting space 140a, the surrounding edge 110a near the front end of the second mounting space 140a is provided with a second gap 141a for the fixing belt 510a to pass through, and the hook 520a is fixed on the fixing belt 510a passing through the second gap 141a; in the present application, the hook 520a is used to hook on the ISOFIX interface of the automobile seat, and the fixing belt adjuster 530a is used to tighten the fixing belt 510a to firmly fix the safety seat cushion on the automobile seat or similar structure, and the fixing belt adjuster 530a can refer to the structure in the prior art.

[0354] As shown in FIG. 4, the base 100a in the second mounting space 140a is provided with a hanging rod 540a for temporarily fixing the hook 520a, by providing the hanging rod 540a, the safety seat cushion in the non-use state hooks the hook 520a on the hanging rod 540a to avoid the hook 520a from shaking to cause safety hazards or scratch other structural members during transportation and movement.

[0355] Exemplary, as shown in FIG. 1 and FIG. 2, the connecting slots are rectangular slots 210a, and each connecting slot is provided with a seat belt female buckle 610a. It should be noted that the number of connecting slots is not limited, and is generally 2-5. By providing multiple connecting slots, it can be adapted for people of different sizes to use. In FIG. 1, the female buckle 610a in each connecting slot is inserted with a male buckle 600a, which is only an example for illustration, and does not mean that a male buckle 600a must be inserted into each female buckle 610a.

[0356] Exemplary, the elastic buffer layer 400a is provided as a first elastic layer 410a located below and a second elastic layer 420a located above. The modulus of the first elastic layer 410a is greater than that of the first elastic layer 410a, and the first elastic layer 410a is provided to be relatively hard for main buffering. The second elastic layer 420a is relatively soft for providing comfort. For example, the first elastic layer 410a is made of high-rebound polyurethane material, and the second elastic layer 420a is made of soft and comfortable sponge.

[0357] Embodiment 2: As shown in FIG. 6 and FIG. 7, the difference between this embodiment and embodiment 1 is that no protective cover is provided, and the U-shaped connecting space 221a is formed by sinking the middle part of the front end of the flat plate 211a, and the corresponding connecting slot is a circular slot 211a. The circular slots 211a are connected by the sliding grooves 212a; correspondingly, the front end of the base 110a is not provided with a protruding plate, but is provided with a groove matching the sinking of the middle part of the flat plate 211a.

[0358] Exemplary, as shown in FIG. 8, the U-shaped connecting space 221a has a gap space 231a between the bottom lower surface and the upper surface of the base 110a. The gap space provides a connecting space for the selected seat belt connecting device, so that the connecting seat has a moving space.

[0359] Embodiment 3: As shown in FIG. 9, the difference between this embodiment and embodiment 1 is that the seat cushion fixing assembly 500a is an ISOFIX hard interface connecting piece 510a. The SOFIX hard interface connecting piece 510a is a standard part, which can be installed on the bottom of the plastic base 100a on both sides.

[0360] The difference between the embodiment and embodiment 1 is that the sub-buckle type is different, and the application provides a sub-buckle as shown in FIG. 10, which comprises a connecting end 620a and a plug-in end 630a, the plug-in end 630a is provided with a plug-in hole 631a connected with the female buckle, the connecting end 620a is a flat ring 621a, the inside of the flat ring 621a forms a sliding groove 622a for the safety belt to pass through, a notch is formed on one side of the flat ring 621a to form a first connecting end 626a and a second connecting end 627a, the second connecting end 627a is hingedly connected with an opening and closing rod 623a through a rotating shaft 625a, the other end of the opening and closing rod 623a is detachably connected with the first connecting end 626a through a threaded sleeve 624a, forming a lock buckle in the sliding groove 622a where the safety belt is located, specifically, the threaded sleeve 624a is provided with internal threads, and the first connecting end 626a is provided with external threads; in the embodiment, the threaded sleeve 624a is sleeved on the opening and closing rod 623a at one end, and can be threadedly connected with the opening and closing rod 623a, in other embodiments, a limiting structure is arranged between the opening and closing rod 623a and the left end and the flat ring 621a, as shown by the dashed line in FIG. 10, the opening and closing rod 623a can only be pressed inward to open through the limiting structure, so as to improve the reliability of the sub-buckle, the limiting structure comprises a first limiting convex 628a arranged on the first connecting end 626a and a second limiting convex 629a arranged on the front end of the opening and closing rod 623a, the second limiting convex 629a is located below the first limiting convex 628a, so that the opening and closing rod 623a can only be pressed inward to open, in other embodiments, in order to further improve the reliability, a torsional spring (not shown in the figure) is arranged on the rotating shaft 625a, so that the second limiting convex 629a of the opening and closing rod 623a is pressed and attached to the first limiting convex 628a, avoiding the opening and closing rod 623a from loosening relative to the first connecting end 626a when the threaded sleeve 624a is not tightened.

[0361] Embodiment 4: as shown in FIG. 11, the application provides another safety cushion embodiment, the difference between the embodiment and embodiment 1 is that the bottom of the base 100a is provided with a height increasing pad 700a for adjusting the height, and the base 100a is provided with a connecting column, a connecting groove or a connecting block at the bottom, and the height increasing pad is installed at the bottom of the base through any one or several of screw connection, interference fit and buckle connection.

[0362] When the safety cushion of the application is used, the safety cushion is fixed on the car seat or other seat through the ISOFIX hard interface connector or the cushion fixing assembly 500a, the safety belt is tied according to the existing standard specification, and then the horizontal part of the safety belt is pulled into the connecting space between the legs and fixed with the safety belt female buckle 610a of the connecting groove or the connecting groove itself.

[0363] Embodiment 5:

[0364] As shown in FIGS. 12-14, the safety structure for preventing abdominal compression on a seat provided with a safety belt 700 includes:

[0365] A seat cushion substrate 100 is a plate-shaped structure provided on the seat for bearing weight, and a hollow joint is provided at the front end of the seat cushion substrate 100 between the legs to form a connecting portion 110;

[0366] A safety belt connecting device 200 is mounted on the safety belt and detachably connected to the connecting portion 110;

[0367] A protective cover is mounted around the connecting portion 110 to surround and protect the safety belt connecting device 200 connected to the connecting portion 110;

[0368] A cushion layer 400 wraps the seat cushion substrate 100 to form a seat cushion; and

[0369] A collision protection pad 500 is provided on the seat cushion substrate 100 on the side close to the user of the connecting portion 110 to constrain the safety belt 700, so that the safety belt 700 forms a surface contact with the user's thigh root and lower abdomen bottom, preventing the safety belt 700 from cutting the user.

[0370] The safety structure for preventing abdominal compression on a seat of the application can be installed on a seat or cushion of a vehicle, a transport tool or an amusement facility, or can be integrally manufactured with a seat or cushion of a vehicle, a transport tool, an amusement facility or the like for protecting pregnant women and children. By setting the cushion base plate 100 as a plate-shaped structure, the structural strength of the safety structure of the application can be improved to cope with sudden high impact force, and better protection can be provided to the user; the position between the two legs at the front end of the cushion base plate 100 is set as a hollow structure to form a connecting part 110, and a safety belt connecting device 200 installed on the safety belt 700 is detachably connected to the connecting part 110, and the hollow structure provides space for the connection and fixation of the safety belt connecting device 200; after the safety belt is buckled according to the existing technical specification, the safety belt connecting device 200 is used to pull and fix the safety belt on the user's abdomen to the connecting part 110 between the user's thighs, and when a safety accident or braking occurs, the contraction force of the safety belt will act on the user's thighs, which can avoid the discomfort caused by the compression of the safety belt on the user's abdomen when the safety belt is contracted; by installing a protective cover around the connecting part 110, the safety belt connecting device 200 connected to the connecting part 110 can be protected, so that the safety belt connecting device 200 is buried in the main body of the cushion, preventing the safety belt connecting device 200 from causing secondary damage such as impact on the user's thigh root when braking or encountering a traffic accident, further ensuring safety; by laying a buffer layer 400 on the cushion base plate 100, on the one hand, the comfort of the user can be improved, and on the other hand, the protective cover can be buried to avoid secondary damage such as knocking the user caused by the protective cover; the safety belt connected between the thighs is adjusted by the anti-collision protective pad 500, so that the middle part of the safety belt forms a surface contact with the user's thigh root and the bottom of the lower abdomen, which not only improves the comfort of the user, but also avoids the safety belt side from cutting the user. The application is not only easy to operate and structurally stable, but also ensures safety and reliability while considering comfort.

[0371] As shown in FIGS. 12-14, the anti-collision protection pad 500 is arranged on the cushion base plate 100 at a position near the connecting portion 110 on the side close to the user. The anti-collision protection pad 500 is a cut-proof layer made of a high-density fabric layer, silica gel, rubber, sponge or other elastic material, and is generally a flexible pad layer. When in use, the anti-collision protection pad 500 is manually placed between the safety belt and the human body, and at the same time, the anti-collision protection pad 500 changes the contact posture of the safety belt and the human body, and changes the linear contact between the safety belt and the abdomen of the human body into surface contact, thereby greatly improving the safety. When the user sits on the seat, the abdomen and the thighs of the human body are in a vertical state, and have a small bending angle. The applicant found in the research and test that, as shown in FIG. 15, when the safety belt is connected to the connecting portion 110, the safety belt that restrains the root of the thigh is in surface contact with the thigh, but the safety belt is in side edge contact with the abdomen of the human body. When a larger impact force is encountered, although the safety belt has good restraint on the thigh at this time, the side edge of the safety belt can cause or cause injuries to the abdomen of the human body. Not only is the comfort poor, but also there is a safety hazard. As shown in FIGS. 16 and 17, the anti-collision protection pad 500 is arranged according to the present application, and the cut-proof layer made of a high-density fabric layer, silica gel, rubber, sponge or other elastic material is used to fill the angle at the groin of the user's abdomen, change the posture of the safety belt, and make the middle part of the safety belt in surface contact with the root of the thigh and the bottom of the abdomen of the user. The side edge of the safety belt no longer directly contacts the user. When a traffic accident or braking occurs, the pulling force of the safety belt is transferred to the anti-collision protection pad 500, and the user is protected by the anti-collision protection pad 500, thereby preventing the safety belt from cutting or impacting the user, and improving the comfort of the user.

[0372] It should be noted that, considering the working principle of the anti-collision protection pad 500 of the present application, the anti-collision protection pad 500 of the present application can be a pad layer with a cushioning function, and is not subjected to tension but only to pressure. Therefore, the specific position and form can be relatively arbitrary, and the anti-collision protection pad 500 can be fixed on the cushion base plate 100, fixed on an external cladding layer, movably arranged, or directly wrapped on the safety belt. When in use, the anti-collision protection pad 500 is slid to the restraint area of the root of the thigh. As shown in FIG. 16, the anti-collision protection pad 500 is in the shape of two long strips and is arranged between the safety belt and the root of the thigh. As shown in FIG. 17, the anti-collision protection pad 500 is in the shape of a triangle and covers the entire abdomen of the user, and can restrain the safety belt at the root of the thigh to prevent the safety belt from cutting or pressing the abdomen of the user.

[0373] As shown in FIG. 13 and FIG. 14, the connecting part 110 is a first protrusion 120 provided on the seat cushion substrate 100 at the position between the two legs and protruding upward, and a second space 130 is provided on the seat cushion substrate 100 at the position outside the two legs, and a sleeve 140 is installed below the second space 130, the sleeve 140 is a profile, and both ends are fixed on the bottom of the seat cushion substrate 100 and the end of the second space 130 respectively, and a hollow structure is formed below the second space. By providing the first protrusion 120 and the second space 130 on the seat cushion substrate 100, on the one hand, the protrusion can form a hollow structure on the seat cushion substrate 100, which provides space for the connection and fixation of the safety belt connecting device 200 and the installation of the connecting assembly, on the other hand, the protrusion can form a hollow structure without increasing the thickness of the seat cushion substrate 100, which reduces the space occupation of the seat cushion substrate 100 and can greatly reduce the weight of the safety structure, realizes lightweight design while ensuring structural strength, and is convenient to carry.

[0374] The connecting assembly with adjustable length is installed in the hollow structure formed by the second space 130 and the sleeve 140, and the connecting assembly can be connected to the ISOFIX interface of the child safety seat fixation system from the rear of the seat cushion substrate 100. Specifically, the connecting assembly is a safety structure fixation belt or an ISOFIX hard interface connecting piece of the child safety seat fixation system, one end of the safety structure fixation belt that passes out of the seat cushion substrate 100 is provided with a hook that can be detachably connected to the ISOFIX interface of the child safety seat fixation system; one end of the ISOFIX hard interface connecting piece of the child safety seat fixation system that passes out of the safety structure is provided with a buckle that can be detachably connected to the ISOFIX interface of the child safety seat fixation system. By setting the connecting assembly as a safety structure fixation belt or an ISOFIX hard interface connecting piece of the child safety seat fixation system, the safety structure of the application can be connected to the ISOFIX interface of the child safety seat fixation system on the rear seat according to the use specifications of different countries, so that the user whose abdomen cannot be pressed can sit in the rear row, providing better safety protection; and the length of the connecting assembly can be adjusted, so that the safety structure of the application can be applied to seats of different sizes. When the connecting assembly is set as a safety structure fixation belt, the hook on the safety structure fixation belt or the buckle on the ISOFIX hard interface connecting piece can be connected to a fixation belt with a buckle, the fixation belt is tied on the backrest of the front seat, and the buckle is fixed, thereby fixing the safety structure on the front seat, providing protection for the user driving or sitting in the front row.

[0375] As shown in FIG. 12, FIG. 13, FIG. 18 and FIG. 19, the protective cover is a U-shaped cover 300 including a horizontal bottom surface 310, a U-shaped inner side surface 320, a U-shaped outer side surface 330 and a top surface 340, the height of the bottom of the horizontal bottom surface 310 is the same as the height of the first protrusion 120, the horizontal bottom surface 310 is installed on the first protrusion 120 by welding, bolting, riveting or other means and closely fits the top of the first protrusion 120, the shape and size of the horizontal bottom surface 310 are adapted to the top of the first protrusion 120. During installation, the horizontal bottom surface 310 is aligned with the same shape hole slot on the top of the first protrusion 120 and then fixed, so that the safety belt connecting device 200 can pass through the hole slot on the top of the first protrusion 120 and be connected with the first protrusion 120, thereby realizing that the U-shaped inner side surface 320 and the U-shaped outer side surface 330 of the U-shaped cover 300 surround and protect the safety belt connecting device 200 connected with the first protrusion 120. The depth of the U-shaped inner side surface 320 of the U-shaped cover 300 of the present application is greater than or slightly greater than (such as greater than 0.2-0.5 cm or so) the height of the safety belt connecting device 200, so that the U-shaped cover 300 can completely cover the safety belt connecting device 200, avoiding the secondary injury of the safety belt connecting device 200 to the user's thigh root.

[0376] As shown in FIG. 18 and FIG. 19, the thickness of each face of the U-shaped cover 300 is 0.4-5.0 mm, the bottom of the U-shaped outer side 330 is fixed on the cushion base plate 100 and located on both sides of the bottom of the first protrusion 120. The U-shaped inner side 320 and the U-shaped outer side 330 are both three-slope gradually protruding shapes, specifically, as shown in FIG. 19, the top of the U-shaped inner side 320 is inclined to the direction of the U-shaped outer side 330, and the included angle a with the horizontal bottom surface 310 is 95°-110°; the top of the U-shaped outer side 330 is inclined to the direction of the U-shaped inner side 320, and the included angle β with the cushion base plate 100 is 100°-120°. The U-shaped inner side 320 and the U-shaped outer side 330 are set to be slope-shaped, on the one hand, it can improve the stability of the U-shaped cover 300, so that the U-shaped cover 300 can stably wrap the safety belt connecting device 200 in all directions, on the other hand, it can release and relieve the impact pressure of the U-shaped cover 300, when the vehicle, the transport tool or the amusement facility collides, it can avoid the user from being impacted by the U-shaped cover 300, protect the safety of the user, and at the same time, it can increase the installation operation space of the safety belt connecting device 200, facilitate the installation and disassembly of the safety belt connecting device 200; through experiments, it is verified that by selecting the above-mentioned angle range of the U-shaped inner side 320 and the U-shaped outer side 330, under the condition of the same amount of material, the strength of the U-shaped cover 300 of the application is improved by about 10%-20%, by setting the angle β of the U-shaped outer side 330 to 100°-120°, the front impact force can be unloaded by sliding upward, about 20-30% of the impact force can be unloaded, which effectively protects the safety of the user and avoids the harm (mainly the harm to the thigh root) caused by the safety belt connecting device 200 on the cushion to the user when responding to the impact. The connection between the top surface 340 and the U-shaped inner side 320 and the U-shaped outer side 330 is set to be a smooth round corner connection, which can further release and relieve the impact pressure of the U-shaped cover 300, and avoid bumping the user.

[0377] As a preferred, the cushion base plate 100, the U-shaped cover 300 and the safety belt connecting device 200 are all made of high-strength metal, high-strength alloy, high-strength carbon fiber, high-strength plastic, high-strength nylon, high-strength glass steel, high-strength ceramic or high-molecular material, etc. The hole groove on the horizontal bottom surface 310 of the cushion base plate 100 and the U-shaped cover 300 is made by laser cutting, water cutting, plasma cutting, wire cutting or stamping, etc. to further improve the structural strength of the safety structure.

[0378] As shown in Fig. 21, the safety belt connecting device 200 comprises a first connecting end 210 installed on the safety belt and a second connecting end 220 capable of connecting the connecting part 110, the first connecting end 210 comprises a fixed rod 211 and a movable rod 212, one end of the fixed rod 211 and the movable rod 212 is connected through a rotating pair, and the other end is detachably connected through a fastener, and a gap through which the safety belt passes is arranged between the fixed rod 211 and the movable rod 212. The second connecting end 220 comprises a connecting seat 221 and a connecting rod 222, and two ends of the connecting rod 222 are respectively fixed on the connecting seat 221 and the fixed rod 211. The first connecting end 210 of the safety belt connecting device 200 of the present application is used to be connected on the safety belt and can be freely adjusted in position along the safety belt; specifically, one end of the fixed rod 211 and the movable rod 212 is connected through a movable connecting device such as a screw or a screw rod or a rivet or a hinge, and the other end is detachably connected through a fastener such as a bolt or a pin shaft, so that the movable rod 212 can rotate around one end of the fixed rod 211, realizing the opening and closing of the first connecting end 210. When the first connecting end 210 is opened, the safety belt on the seat is pulled into the gap between the fixed rod 211 and the movable rod 212, and then the other end of the fixed rod 211 and the movable rod 212 is tightened through the fastener to close the first connecting end 210, realizing the connection of the safety belt connecting device 200 and the safety belt. By installing the connecting seat 221 and the connecting rod 222 of the second connecting end 220 on the connecting part 110, the connection of the second connecting end 220 and the connecting part 110 can be realized, and then the safety belt which has been buckled according to the existing technical specification is further fixed between the thighs of the user, avoiding the compression of the abdomen of the user.

[0379] The second connecting end 220 of the safety belt connecting device 200 comprises a connecting seat 221 and a connecting rod 222 fixed at two ends of the connecting seat 221 and the first connecting end 210, and a mounting hole 111 and a plurality of limiting members are arranged on the horizontal bottom surface of the U-shaped connecting part 110 and are communicated by a sliding groove 113, the connecting seat 221 can pass through the mounting hole 111, the connecting rod 222 can freely slide in the sliding groove 113, and when sliding to a set position, the connecting seat 221 is clamped and fixed through the limiting members.

[0380] As a preferred embodiment, the second connecting end 220 is fixed to the connecting part 110 by a rotating connection, as shown in FIG. 20 and FIG. 21. The connecting rod 222 is a cylindrical rod with two opposite flat surfaces, the connecting seat 221 is a disc with a diameter larger than the maximum diameter of the connecting rod 222, and the limiting member is a plurality of limiting holes 112 (three in FIG. 20) distributed on the horizontal bottom surface. The width of the sliding groove 113 is greater than the distance between the two flat surfaces of the connecting rod 222 and less than the diameter of the body of the connecting rod 222, and the size of the limiting hole 112 is greater than the diameter of the connecting rod 222 and less than the diameter of the connecting seat 221, so that the connecting rod 222 can freely slide in the sliding groove 113 in the direction of the two flat surfaces, and under the action of an external force, the connecting rod 222 is rotated to a position where the two flat surfaces are substantially perpendicular to the sliding groove 113, so that the connecting rod 222 cannot enter the sliding groove 113 and is clamped in the limiting hole 112, completing the limiting and fixing of the connecting rod 222 in a certain limiting hole 112.

[0381] Specifically, the diameter of the mounting hole 111 is greater than or slightly greater (0.5-3 mm larger) than the diameter of the connecting seat 221; the diameter of the limiting hole 112 is slightly greater (0.5-3 mm larger) than the maximum diameter of the connecting rod 222, and the diameter of the limiting hole 112 is less than the diameter of the connecting seat 221; the thickness of the flat rod part of the connecting rod 222 after being cut is slightly less (0.5-2 mm smaller) than the width of the sliding groove 113, and the diameter of the arc surface of the body of the connecting rod 222 is greater than the width of the sliding groove 113, so that the width of the sliding groove 113 is adapted to the distance between the two flat surfaces of the connecting rod 222. When it is necessary to fix the safety belt connecting device 200 to the connecting part 110, first, the connecting seat 221 is inserted through the mounting hole 111 on the connecting part 110, and then the second connecting end 220 is rotated so that the two flat surfaces of the connecting rod 222 are opposite to the two sides of the sliding groove 113. At this time, the connecting rod 222 can slide back and forth in the sliding groove 113. When the connecting rod 222 is slid to a suitable limiting hole 112, the second connecting end 220 is rotated so that the two arc surfaces of the connecting rod 222 are opposite to the two sides of the sliding groove 113. At this time, since the diameter of the arc surface of the connecting rod 222 is greater than the width of the sliding groove 113, the connecting rod 222 cannot slide in the sliding groove 113, and the connecting rod 222 is fixed in the limiting hole 112, thereby playing a role of fixing the safety belt connecting device 200.

[0382] The safety belt connecting device 200 of the present application is connected with the safety belt on the seat in the non-use state, and when the user sits on the safety structure, the second connecting end 220 of the safety belt connecting device 200 is fixed on the connecting part 110, and according to the size and body shape of the user's abdomen, the connecting rod 222 is fixed in the limiting hole 112 at the appropriate position, so that the connection position of the second connecting end 220 and the connecting part 110 can be adjusted. The installation position of the safety belt connecting device 200 can be adjusted according to the size and body shape of the user's abdomen, so that the safety belt on the vehicle or amusement facility is bound as close as possible to the position of the user's thigh root, and the displacement of the user when braking or in an accident is reduced as much as possible, so that the safety belt generates binding force in time, and the safety air bag can be triggered in time in the case of a serious accident. While improving the safety of the safety structure of the present application, the comfort of the user using the safety structure is also improved. After use, the second connecting end 220 can be removed from the connection.

[0383] As a preferred embodiment, the second connecting end 220 of the safety belt connecting device 200 can be provided in the shape of a flat sub-buckle, and can be connected and fixed between the connecting part 110 through a sub-mother buckle, a gear lock, a clamping groove connection or the like.

[0384] As a preferred embodiment, as shown in FIG. 12, the middle and both sides of the seat cushion substrate 100 are provided in a hollow structure, which can greatly reduce the weight of the seat cushion substrate 100 while ensuring the structural strength of the seat cushion substrate 100, so that the safety structure of the present application is easy to carry and use.

[0385] As a preferred embodiment, the seat cushion substrate 100 is made of metal, alloy, high-strength carbon fiber, high-strength plastic, high-strength nylon, high-strength glass steel, high-strength ceramic or high-molecular material, etc. with high structural strength. Through the high-strength seat cushion substrate 100, the safety structure of the present application can resist the impact force caused by traffic accidents or braking, and provide stable safety protection for users whose abdomens cannot be pressed.

[0386] As a preferred embodiment, the sleeve 140 is made of plastic, which can provide sufficient support strength and reduce the weight of the safety structure to meet the lightweight design.

[0387] As a preferred embodiment, the buffer layer 400 is made of high-density fabric, sponge, rubber pad, sponge pad, silica gel pad or other buffer materials, which can improve the comfort of the user and bury the protective cover to avoid secondary injury caused by the protective cover to the user.

[0388] As a preferred embodiment, as shown in FIG. 13 and FIG. 14, the cushion layer 400 is further provided with a wrapping layer 600, which is made of flexible material such as cloth and the like, further improving the comfort of the user.

[0389] As a preferred embodiment, the cushion base plate 100 is provided below with height adjustment pads through connecting members, which are connecting holes, connecting grooves or connecting blocks provided on the cushion base plate. In this embodiment, as shown in FIG. 12, the cushion base plate 100 is provided with a plurality of connecting holes 170, and the height adjustment pads can be installed below the cushion base plate 100 through the connecting holes 170. The safety structure of the present application can select whether to install the height adjustment pads according to the height of different users, and select the height adjustment pads with appropriate thickness, so that adults and children with different heights can use the safety structure of the present application.

[0390] Embodiment 6:

[0391] The other parts are the same as embodiment 5, and the difference lies in the structure of the safety belt connecting device 200. In this embodiment, the second connecting end 220 is fixed through the clamping groove connection with the connecting part 110. As shown in FIG. 22 and FIG. 24, the connecting rod 222 is a cylindrical rod with a height greater than the thickness of the connecting part 110, and the limiting member is a plurality of limiting grooves 115 distributed at the bottom of the sliding groove 113. The diameters of the mounting hole 111 and the limiting groove 115 are greater than the diameter of the connecting seat 221, the width of the sliding groove 113 is greater than the diameter of the connecting rod 222 and less than the diameter of the connecting seat 221. Under the external force, the connecting rod 222 can slide freely in the sliding groove 113, and after the external force is removed, the connecting seat 221 is clamped in the corresponding limiting groove 115 under the tightening force of the safety belt.

[0392] Specifically, the connecting seat 221 is a disc with a diameter larger than that of the connecting rod 222, the diameter of the mounting hole 111 and the limiting slot 115 is larger than or slightly larger (0.5-3mm larger) than that of the connecting seat 221, so that the connecting seat 221 can smoothly pass through the mounting hole 111 and enter the limiting slot 115; the width of the sliding slot 113 is larger than or slightly larger (0.5-2mm larger) than the diameter of the connecting rod 222 and smaller than the diameter of the connecting seat 221, so that the width of the sliding slot 113 is matched with the diameter of the connecting rod 222, so that when the connecting seat 221 is separated from the limiting slot 115, the connecting rod 222 can freely slide in the sliding slot 113; the thickness of the limiting slot 115 is smaller than that of the sliding slot 113, so that the connecting seat 221 can be fixed in the limiting slot 115 at the bottom of the sliding slot 113; the length (axial length) of the connecting rod 222 is larger than the thickness (or the depth of the sliding slot 113) of the connecting part 110, so that when the safety belt connecting device 200 moves along the axial direction of the connecting rod 222, the connecting seat 221 can smoothly enter or exit the limiting slot 115.

[0393] When it is necessary to fix the safety belt connecting device 200 on the connecting part 110, first, the connecting seat 221 is passed through the mounting hole 111, then an external force is applied to make the connecting rod 222 freely slide forward and backward in the sliding slot 113, when the connecting rod 222 slides to the limiting slot 115 at the appropriate position according to the passenger's body type, the external force is removed and the connecting seat 221 is abutted in the limiting slot 115 at the bottom of the sliding slot 113 under the tightening force of the safety belt, because the size of the connecting seat 221 is matched with that of the limiting slot 115 and is larger than the width of the sliding slot 113, at this time under the action of the self-tensioning force of the safety belt, the connecting seat 221 is clamped in the limiting slot 115, the connecting rod 222 cannot slide in the sliding slot 113, thereby playing a role of fixing the safety belt connecting device 200, realizing the locking and fixing of the safety belt connecting device 200 and the connecting part 110.

[0394] The other parts in the embodiment are the same as those in embodiment 5.

[0395] Embodiment 7:

[0396] In this embodiment, except for the cushion base plate 100, the other parts are the same as those in Embodiment 6. As shown in FIGS. 25-27, the cushion base plate 100 is a hollow structure plate, the hollow structure at the front end of the cushion base plate 100 between the two legs forms a connecting part 110, and the hollow structure at the position outside the two legs of the cushion base plate 100 forms a mounting groove 150 for mounting the safety structure fixing belt. On one hand, the hollow structure plate can provide space for the connection and fixation of the safety belt connecting device 200 and the installation of the safety structure fixing belt, and on the other hand, it can greatly reduce the weight of the cushion base plate 100, realize lightweight design while ensuring structural strength, and make the safety structure of the present application easy to carry and use.

[0397] As a preferred, a plurality of cushion blocks 160 are arranged in the hollow structure plate. The arrangement of the cushion blocks 160 not only can limit the installation space and movement range of the safety structure fixing belt, but more importantly, can improve the structural strength of the safety structure and ensure its safety performance.

[0398] As shown in FIGS. 28 and 29, the protective cover is a U-shaped cover 300 including a horizontal bottom surface 310, a U-shaped inner side surface 320, a U-shaped outer side surface 330, a vertical side surface 350, and a top surface 340. Two long grooves are arranged on the horizontal bottom surface 310 and correspond to the clamping grooves on the connecting part 110. The second connecting end of the corresponding safety belt connecting device 200 is a buckle (not shown in the figure). The U-shaped inner side surface 320 and the U-shaped outer side surface 330 are also arranged in an inclined manner, and the arrangement manner is the same as that in Embodiment 5. The horizontal bottom surface 310 and the vertical side surface 350 are respectively installed on the top of the connecting part 110 and the front wall 114 by welding, bolt, rivet fixation or other methods. The shape and size of the horizontal bottom surface 310 are adapted to the top of the connecting part 110 and closely fit the top of the connecting part 110, so that the safety belt connecting device 200 is connected to the connecting part 110 through the horizontal bottom surface 310 in the U-shaped cover 300, thereby realizing that the U-shaped inner side surface 320 and the U-shaped outer side surface 330 surround and protect the safety belt connecting device 200 connected to the connecting part 110. The vertical side surface 350 is arranged at one end of the horizontal bottom surface 310, and the height of the vertical side surface 350 is adapted to the height of the front wall 114 of the connecting part 110 and is fixed on the front wall 114 of the connecting part 110, so that the connection between the U-shaped cover 300 and the connecting part 110 is more stable, thereby improving the strength and safety performance of the safety structure. The other parts of the U-shaped cover 300 are the same as those in Embodiment 5.

[0399] Embodiment 8:

[0400] As shown in FIGS. 30-32, the present embodiment provides a hook-type safety structure for preventing abdominal compression on a seat, wherein the seat comprises a safety belt, and the safety structure comprises:

[0401] The seat cushion substrate 100b is a plate-shaped structure arranged on the seat for bearing weight. The front end of the seat cushion substrate 100b is hollow to form a mounting seat 110b between the legs.

[0402] The seat belt connecting mechanism 200b is used for connecting the seat belt. The seat belt connecting mechanism 200b comprises a hook 210b mounted on the mounting seat 110b and a locking device 220b capable of locking the hook 210b to prevent the seat belt from being detached. The hook 210b is manufactured by press bending, bending, roll bending or stretch bending process.

[0403] The protective cover is mounted around the mounting seat 110b to surround and protect the seat belt connecting mechanism 200b.

[0404] The cushion layer 400 is used for wrapping the seat cushion substrate 100b and the protective cover to form a seat cushion.

[0405] The anti-collision protective pad 500 is arranged on the seat cushion substrate 100b near the side of the mounting seat 110b close to the user. The anti-collision protective pad 500 is used for restraining the seat belt to form a surface contact between the seat belt and the user's thigh root and lower abdomen bottom, preventing the user from being cut by the side edge of the seat belt.

[0406] The seat cushion tail filling block 600b is arranged between the rear end of the seat cushion substrate 100b and the user's hip to make the user's body as close as possible to the hook 210b.

[0407] The hook-shaped safety structure for preventing abdominal compression on a seat of the present application can be installed on or integrally manufactured with the seat or cushion of a vehicle, a transport tool or an amusement facility. By setting the cushion base plate 100b as a plate-shaped structure, the structural strength of the safety structure of the present application can be improved to cope with sudden high impact force, and better protection can be provided to the user; the hollow structure formed by setting the position of the cushion base plate 100b between the two legs as the mounting seat 110b is used to mount and fix the safety belt connecting mechanism 200b, and the safety belt connecting mechanism 200b is used to connect the safety belt. After the safety belt is buckled according to the existing technical specification, the safety belt located at the user's abdomen is pulled together by the safety belt connecting mechanism 200b and sleeved on the hook 210b between the user's thighs. When a safety accident or braking occurs, the contraction force of the safety belt will act on the user's thighs, which can avoid the discomfort caused by the compression of the safety belt on the user's abdomen when the safety belt is contracted, and the safety performance of the present application is improved by the locking of the hook 210b and the locking device 220b to prevent the safety belt from being separated from the safety belt connecting mechanism 200b. The hook 210b of the present application is manufactured by bending, bending, rolling or stretching process. The bending, bending, rolling or stretching process is used to replace the casting and polishing process to directly process the hook 210b, which reduces the production links such as casting and polishing, not only reduces the manufacturing cost and processing time, but also improves the product strength. The mounting protection cover around the mounting seat 110b is set to bury the hook 210b and the locking device 220b in the protection cover, which can prevent the hook 210b from causing secondary injury to the user's thigh root when braking or encountering a traffic accident, and further improve the safety; the cushion base plate 100b and the protection cover are wrapped to form a cushion by laying a buffer layer 400, which can not only prevent the protection cover from causing injury to the user, but also improve the comfort of riding; the anti-collision protection pad 500 is arranged at the end of the mounting seat 110b to adjust the safety belt connected between the thighs, so that the middle part of the safety belt forms a surface contact with the user's thigh root and the bottom of the lower abdomen, which can not only improve the comfort of the user, but also avoid the safety belt side from cutting the user; the tail filling block 600b between the rear end of the cushion base plate 100b and the user's buttocks can make the user's body as close to the hook 210b as possible, and reduce the displacement of the user's forward impact when braking or accident occurs, so as to improve the safety performance. The present application is not only easy to operate and structurally stable, but also ensures safety and reliability while considering comfort.

[0408] As shown in FIGS. 30-32, the anti-collision protection pad 500 is arranged on the seat cushion substrate 100b at a side of the mounting seat 110b close to the user, and is a cut-proof layer made of a high-density fabric layer, silica gel, rubber, sponge or other elastic material. Generally, the anti-collision protection pad 500 is a flexible pad layer, which is manually placed between the safety belt and the human body during use, and changes the contact posture of the safety belt and the human body while playing a role of isolation and buffering, so that the line contact state between the safety belt and the abdomen of the human body is changed to a surface contact, thereby greatly improving the safety. When the user sits on the seat, the abdomen and the thighs of the human body are in a vertical state with a small bending angle. The applicant found in the research and test that, as shown in FIG. 4, when the safety belt is connected to the mounting seat 110b, the safety belt that restrains the root of the thigh is in surface contact with the thigh, but the safety belt is in side edge contact with the abdomen of the human body. When a larger impact force is encountered, although the safety belt has good restraint on the thigh at this time, the side edge of the safety belt can cause or cause injuries to the abdomen of the human body, which not only has poor comfort, but also has a safety hazard. As shown in FIGS. 5 and 6, the anti-collision protection pad 500 is arranged according to the present application, and the cut-proof layer made of a high-density fabric layer, silica gel, rubber, sponge or other elastic material is used to process the fillet at the groin of the user's abdomen, change the posture of the safety belt, and make the middle part of the safety belt form surface contact with the root of the thigh and the bottom of the abdomen of the user. The side edge of the safety belt no longer directly contacts the user. When a traffic accident or braking occurs, the tension of the safety belt is transferred to the anti-collision protection pad 500, which protects the user through the anti-collision protection pad 500, prevents the safety belt from cutting or impacting the user, and improves the comfort of the user.

[0409] It should be noted that, considering the working principle of the anti-collision protection pad 500 of the present application, the anti-collision protection pad 500 of the present application can be a pad layer with a buffering function, and is not subjected to tension but only pressure. Therefore, the specific position and form can be relatively arbitrary, and the anti-collision protection pad 500 can be fixed on the seat cushion substrate 100b, fixed on an external cladding layer, movably arranged, or directly wrapped on the safety belt. When used, the anti-collision protection pad 500 can be slid to the thigh root restraint area. As shown in FIG. 5, the anti-collision protection pad 500 is in the shape of two long strips and is arranged between the safety belt and the root of the thigh. As shown in FIG. 6, the anti-collision protection pad 500 is in the shape of a triangle and covers the entire abdomen of the user, and can restrain the safety belt at the root of the thigh to prevent the safety belt from cutting or pressing the abdomen of the user.

[0410] As shown in FIG. 30, the seat cushion tail filling block 600b is made of rubber, silica gel, sponge or hollow plastic parts and other materials, and the shape of the seat cushion tail filling block 600b is consistent with the shape of the rear end of the safety structure and the user's hips. The seat cushion tail filling block 600b is installed between the rear end of the seat cushion substrate 100b and the user's hips, and the user's body will not move backward during use, and the user's thigh root can be kept as close to the safety belt connecting mechanism 200b and the protective cover as possible, and the displacement of the user's forward impact when braking or in an accident is minimized, so that the safety belt generates a binding force in time, and the safety airbag can be triggered in time to open in a serious accident, further improving the safety performance. As a preferred, the seat cushion tail filling block 600b is provided in different sizes, and the user can select seat cushion tail filling blocks 600b of different sizes according to the body shape to improve the use effect.

[0411] As shown in FIG. 31 and FIG. 32, the mounting seat 110b is a first space 120b provided in the seat cushion substrate 100b between the two legs, and the hook 210b includes a fixed end 211b installed on one side of the first space 120b near the middle of the seat cushion substrate 100b and a connecting end 212b near one side of the safety structure edge. The hook 210b is manufactured by bending or bending process, and is fixed on one side of the first space 120b near the middle of the seat cushion substrate 100b by welding or rivet or screw bolt connection. After the safety belt is buckled according to the existing technical specification, the hook 210b can pull and fix the safety belt located on the user's abdomen between the user's thighs, and when a safety accident or braking occurs, the contraction force of the safety belt will act on the user's thighs, which can avoid the discomfort caused by the safety belt pressing the user's abdomen when it contracts.

[0412] The locking device 220b is a spring locking device, comprising a fixed sleeve 221b installed in the mounting seat 110b, a spring 222b and a piston 223b installed in the fixed sleeve 221b, and the piston 223b is installed at the top of the spring 222b and can be locked with the connecting end 212b. As shown in FIG. 7 and FIG. 8, the fixed sleeve 221b is a cylindrical sleeve fixed at the top of the inside of the mounting seat 110b, the piston 223b is a cylindrical piston 223b with a diameter matched with the inner diameter of the fixed sleeve 221b, the piston 223b can compress the spring 222b and move in the fixed sleeve 221b to achieve the locking and opening of the piston 223b with the connecting end 212b, facilitate the connection and fixation of the safety belt, and prevent the safety belt from being detached from the hook 210b, reducing the safety hazard. The piston 223b is provided with an adjusting rod 2231b, the rear end of the adjusting rod 2231b is fixed on the piston 223b, and the front end extends out of the fixed sleeve 221b and the safety structure, the fixed sleeve 221b is provided with a vertical sliding groove 2211b and a horizontal sliding groove 2212b at the bottom of the vertical sliding groove 2211b, and the adjusting rod 2231b can slide in the vertical sliding groove 2211b and the horizontal sliding groove 2212b. By setting the adjusting rod 2231b extending out of the safety structure, the user can adjust the opening and locking of the safety belt connecting mechanism 200b outside the cushion, improving the convenience of operation; by setting the vertical sliding groove 2211b and the horizontal sliding groove 2212b, not only the movement of the piston 223b can be facilitated, but also the piston 223b can be fixed to keep the safety belt connecting mechanism 200b open, facilitating the connection of the safety belt.

[0413] Specifically, when the safety belt connecting mechanism 200b is not connected with the safety belt, the spring 222b is in a normal state, and at this time, the top of the piston 223b is in contact with the connecting end 212b of the hook 210b to achieve locking; when it is necessary to connect the safety belt, the adjusting rod 2231b is pressed downward, the adjusting rod 2231b will slide downward in the vertical sliding groove 2211b, and drive the piston 223b to compress the spring 222b and move downward, when the adjusting rod 2231b slides to the bottom of the vertical sliding groove 2211b, the adjusting rod 2231b is rotated to slide into the horizontal sliding groove 2212b, and then the adjusting rod 2231b is released, at this time, the adjusting rod 2231b is fixed in the horizontal sliding groove 2212b, and the piston 223b is in a separated state from the connecting end 212b of the hook 210b; then the safety belt normally connected to the abdomen of the user is pulled forward to pass through the opening of the piston 223b and the connecting end 212b and is fixed on the hook 210b, to achieve the connection of the safety belt and the safety belt connecting mechanism 200b; then, the adjusting rod 2231b is rotated in the opposite direction to slide into the vertical sliding groove 2211b, and then the adjusting rod 2231b is released, at this time, the piston 223b will move upward under the elastic force of the spring 222b and be in contact with the connecting end 212b of the hook 210b, to achieve the locking of the safety belt connecting mechanism 200b. The safety belt will be locked in the space formed by the safety belt connecting mechanism 200b and the horizontal bottom surface 310 of the U-shaped cover 300, and no safety risk will be caused by the disconnection of the safety belt from the safety belt connecting mechanism 200b, thereby improving the safety performance of the safety structure of the application.

[0414] As shown in FIGS. 9-11, the protective cover is a U-shaped cover 300 including a horizontal bottom surface 310, a vertical side surface 320, a U-shaped inner side surface 320, a U-shaped outer side surface 330 and a top surface 340, the horizontal bottom surface 310 and the vertical side surface 320 are respectively installed on the top of the mounting seat 110b and the front wall of the cushion base plate 100b by welding, bolts, rivets or the like, and the horizontal bottom surface 310 and the vertical side surface 320 are both provided with mounting holes matched with the safety belt connecting mechanism 200b, specifically, the horizontal bottom surface 310 is provided with a first mounting hole 360 through which the fixed end 211b of the hook 210b passes and a second mounting hole 370 through which the piston 223b moves, and the front wall of the cushion base plate 100b and the vertical side surface 320 of the U-shaped cover 300 are both provided with a third mounting hole 380 through which the adjusting rod 2231b passes and moves. The depth of the U-shaped inner side surface 320 of the application is greater than or slightly greater than (0.2-0.5 cm) the height of the safety belt connecting mechanism 200b, so that the U-shaped cover 300 can completely cover the safety belt connecting mechanism 200b, avoiding secondary injuries such as impact on the user caused by the safety belt connecting mechanism 200b extending out of the U-shaped cover 300.

[0415] The thickness of each face of the U-shaped cover 300 is 0.4-5.0 mm, the bottom of the U-shaped outer side 330 is fixed on the cushion base plate 100b and located on both sides of the bottom of the mounting seat 110b. The U-shaped inner side 320 and the U-shaped outer side 330 are both three-slope gradually convex shapes, specifically, the top of the U-shaped inner side 320 is inclined to the direction of the U-shaped outer side 330, and forms an angle of 95°-110° with the horizontal bottom surface 310; the top of the U-shaped outer side 330 is inclined to the direction of the U-shaped inner side 320, and forms an angle of 95°-110° with the cushion base plate 100b. The U-shaped inner side 320 and the U-shaped outer side 330 are set as slope shapes, on the one hand, the stability of the U-shaped cover 300 can be improved, so that the U-shaped cover 300 can stably wrap the safety belt connecting mechanism 200b in all directions, on the other hand, the impact pressure of the U-shaped cover 300 can be released and relieved, when the vehicle, the transport tool or the amusement facility collides, direct impact between the user and the U-shaped cover 300 can be avoided, the safety of the user is protected, and the installation operation space of the safety belt connecting mechanism 200b can be increased, so that the safety belt connecting mechanism 200b can be conveniently installed and disassembled. The connection between the top surface 340 and the U-shaped inner side 320 and the U-shaped outer side 330 is set as smooth round corner connection, the impact pressure of the U-shaped cover 300 can be further released and relieved, and the user can be avoided from being bumped.

[0416] As a preferred, the cushion base plate and the U-shaped cover 300 are made of high-strength metal, alloy, high-strength carbon fiber, high-strength plastic, high-strength nylon, high-strength glass steel, high-strength ceramic or high-molecular material, and the mounting hole and the limiting hole on the U-shaped cover 300 are made by laser cutting, water cutting, plasma cutting, wire cutting and stamping, so that the structural strength of the safety structure can be further improved.

[0417] The hollow structure of the seat cushion substrate 100b at the position between the two legs forms a mounting groove 140b, and a length-adjustable connecting assembly is mounted in the mounting groove 140b. The connecting assembly can pass through the rear of the seat cushion substrate 100b and be detachably connected to the ISOFIX interface of the child safety seat fixing system. As shown in FIG. 31, the seat cushion substrate 100b at the position between the two legs is provided with a second space 130b, and the hollow structure of the seat cushion substrate 100b below the second space 130b forms a mounting groove 140b. Specifically, the connecting assembly is a seat cushion fixing belt 150b or an ISOFIX hard interface connecting piece of the child safety seat fixing system. One end of the seat cushion fixing belt 150b passing through the seat cushion substrate 100b is provided with a hook that can be detachably connected to the ISOFIX interface of the child safety seat fixing system. One end of the ISOFIX hard interface connecting piece of the child safety seat fixing system passing through the safety structure is provided with a buckle that can be detachably connected to the ISOFIX interface of the child safety seat fixing system. By setting the connecting assembly as the seat cushion fixing belt 150b or the ISOFIX hard interface connecting piece of the child safety seat fixing system, the safety structure of the application can be connected to the ISOFIX interface of the child safety seat fixing system on the rear seat cushion according to the use specifications of different countries, so that users whose abdomen cannot be pressed can sit in the rear row, thereby providing better safety protection. In addition, the length of the connecting assembly can be adjusted, so that the safety structure of the application can be applied to seats of different sizes. When the connecting assembly is set as the seat cushion fixing belt 150b, the hook on the seat cushion fixing belt 150b can be connected to a fixing belt with a buckle. The fixing belt is tied to the backrest of the front seat, and the buckle is fixed, thereby fixing the safety structure on the front seat, thereby protecting the user who is driving or sitting in the front row.

[0418] As a preferred embodiment, as shown in FIG. 30, a plurality of through holes 160b are arranged in the middle of the seat cushion substrate 100b, so that the seat cushion substrate 100b forms a hollow structure. The weight of the seat cushion substrate 100b can be greatly reduced on the basis of ensuring the structural strength of the seat cushion substrate 100b, so that the safety structure of the application meets the lightweight design and is convenient to carry and use.

[0419] The buffer layer 400 is made of high-density fabric, sponge, rubber pad, sponge pad, silica gel pad or other buffer materials. On the one hand, it can improve the comfort of the user, and on the other hand, it can bury the protective cover to avoid secondary injury such as bumping caused by the protective cover to the user, and can wrap the safety belt to prevent the safety belt from cutting the user laterally.

[0420] As a preferred embodiment, the buffer layer 400 is further provided with a wrapping layer (not shown in the figure). The wrapping layer 700 is made of flexible materials such as cloth and the like, which further improves the comfort of the user.

[0421] As a preferred, the seat cushion substrate 100b and the safety belt connecting mechanism 200b are made of high-strength metal, alloy, high-strength carbon fiber, high-strength plastic, high-strength nylon, high-strength glass steel, high-strength ceramic or high-molecular material, etc. Through the high-strength seat cushion substrate 100b, the safety structure of the present application can resist the impact force caused by traffic accidents or braking, and provide stable safety protection for the user whose abdomen cannot be pressed.

[0422] As a preferred, as shown in Figure 30, the seat cushion substrate 100b is provided with a plurality of height adjusting pad mounting holes 170b, and the height adjusting pad can be mounted through the height adjusting pad mounting hole 170b below the seat cushion substrate 100b. The safety structure of the present application can choose whether to install the height adjusting pad according to the height of different users, and choose the appropriate thickness of the height adjusting pad, so that adults and children of different heights can use the safety structure of the present application.

[0423] Embodiment 9:

[0424] In this embodiment, as shown in Figures 38 and 28, the locking device 220b is a dial wheel type locking device, which includes a nut 224b fixed in the mounting seat 110b, a screw rod 225b passing through the top of the mounting seat 110b and connected to the nut 224b, and a dial wheel 226b fixed on the screw rod 225b. The top of the screw rod 225b can be locked with the connecting end 212b, and the edge of the dial wheel 226b extends out of the safety structure. As shown in Figures 23 and 24, the nut 224b is fixed to the inside of the top of the mounting seat 110b by welding or other methods. The mounting seat 110b top is provided with a connecting hole at a position corresponding to the threaded hole of the nut 224b. The bottom of the screw rod 225b passes through the connecting hole and is threadedly connected with the nut 224b. The bottom of the screw rod 225b connected to the nut 224b is fixedly connected with the dial wheel 226b. The top diameter of the screw rod 225b is matched with the diameter of the connecting end 212b. By rotating the dial wheel 226b, the screw rod 225b can be moved along the direction of the threaded hole of the nut 224b to realize the locking and opening of the screw rod 225b with the connecting end 212b, which facilitates the connection and fixation of the safety belt, prevents the safety belt from being separated from the hook 210b, and reduces the safety hazard. The vertical side 320 of the U-shaped cover 300 and the corresponding position of the outer wall of the safety structure are provided with mounting holes, and the edge of the dial wheel 226b extends out of the mounting hole, so that the user can rotate the dial wheel 226b outside the seat cushion to adjust the opening and locking of the safety belt connecting mechanism 200b, and improve the convenience of operation.

[0425] Specifically, when the safety belt needs to be connected, rotating the dial 226b makes the screw rod 225b move towards the bottom of the mounting base 110b, at this time the top of the screw rod 225b is separated from the connecting end 212b; then the safety belt normally connected to the user's abdomen is passed through the opening of the top of the screw rod 225b and the connecting end 212b and fixed on the hook 210b, realizing the connection of the safety belt and the safety belt connecting mechanism 200b; then, rotating the dial 226b in the opposite direction makes the screw rod 225b move towards the connecting end 212b, until the top of the screw rod 225b contacts the connecting end 212b, realizing the locking of the safety belt connecting mechanism 200b. The safety belt will be locked in the space formed by the safety belt connecting mechanism 200b and the horizontal bottom surface 310 of the U-shaped cover 300, and there will be no safety risk caused by the disconnection of the safety belt from the safety belt connecting mechanism 200b, improving the safety performance of the safety structure of the present application.

[0426] In this embodiment, the other parts are the same as those in Embodiment 8.

[0427] Embodiment 10:

[0428] In this embodiment, as shown in FIG. 40, the locking device 220b is a barb locking device, which includes a barb 227b mounted on the connecting end 212b. The gap between the barb 227b and the horizontal bottom surface 310 of the U-shaped cover 300 is adapted to the thickness of the safety belt. Specifically, the distance between the barb 227b and the horizontal bottom surface 310 is 2-5 mm larger than the thickness of the safety belt, so that the safety belt can pass through the gap and be fixed on the safety belt connecting mechanism 200b, and in the process of moving of the user, the safety belt is not easy to be disconnected from the hook 210b and the barb 227b, thereby reducing the safety risk and improving the safety performance of the safety structure of the present application.

[0429] In this embodiment, the other parts are the same as those in Embodiment 8.

[0430] Embodiment 11:

[0431] In the embodiment, as shown in Fig. 41, the locking device 220b is a barb locking device, which comprises a barb 227b installed on the connecting end 212b. Two hook connecting holes 180b are arranged on the top of the mounting seat 110b in the front-back direction. The fixed end 211b of the hook 210b can be detachably connected with any hook connecting hole 180b through screws or other fasteners. The user can select the appropriate position of the hook connecting hole 180b according to the size and body shape of the abdomen, and install the fixed end 211b of the hook 210b, so that the safety belt of the vehicle or amusement facility is bound at a position as close as possible to the user's thigh root, and the displacement of the user when braking or in an accident is reduced as much as possible, so that the safety belt generates a binding force in time, and the safety air bag can be triggered in time in the event of a serious accident, thereby improving the safety of the safety structure and the comfort of the user when using the safety structure.

[0432] In the embodiment, the other parts are the same as those in Embodiment 10.

[0433] Embodiment 12

[0434] In the embodiment, as shown in Fig. 42, the locking device 220b is a sleeve locking device, which comprises an external thread installed on the connecting end 212b. The top of the mounting seat 110b is provided with a rotatable threaded sleeve 228b. The top of the threaded sleeve 228b is open, and is provided with an internal thread matched with the external thread of the connecting end 212b. During rotation of the threaded sleeve 228b driven by external force, the threaded sleeve 228b rises or falls due to the thread matching, so as to open or close the gap between the connecting end 212b and the top of the mounting seat 110b. When the gap is opened, the safety belt can enter or exit the inside of the hook 210b.

[0435] In the embodiment, the other parts are the same as those in Embodiment 8.

[0436] Embodiment 13

[0437] In the embodiment, as shown in FIG. 43, the locking device 220b is a sleeve locking device, and other structures are the same as those in Embodiment 9, except that a plurality of hook connecting holes 180b are arranged at the top of the mounting base 110b in the front-rear direction, and the fixed end 211b of the hook 210b can be detachably connected to any hook connecting hole 180b through a fastener such as a screw, and at the same time, the threaded sleeve 228b can be detachably mounted at the top of the mounting base 110b, and the corresponding threaded sleeve 228b can be selected according to the position of the hook 210b. The user can select the appropriate position of the hook connecting hole 180b according to the size of the abdomen and the body type to install the fixed end 211b of the hook 210b, so that the safety belt on the vehicle or amusement facility is bound as close as possible to the position of the user's thigh root, and the displacement of the user when braking or in an accident is reduced as much as possible, so that the safety belt generates a binding force in time, and the safety airbag can be triggered in time in the event of a serious accident, thereby improving the safety of the safety structure and the comfort of the user when using the safety structure.

[0438] Embodiment 14:

[0439] In the embodiment, as shown in FIG. 44, other structures are the same as those in Embodiment 8, Embodiment 9, Embodiment 10, Embodiment 11, Embodiment 12 or Embodiment 13, except that the cushion base plate 100b is integrally formed in the shape of the curve of the human buttocks, the middle part of the cushion base plate 100b is upwardly protruded between the legs to form a first space 120b, and the outer sides of the legs are upwardly protruded to form a second space 130b with a hollow bottom, and the cushion base plate 100b is formed in the shape of the human buttocks, with three edges upwardly protruded and the front part of the base plate recessed along the thigh. The first space 130b forms a U-shaped cover 300, which includes a horizontal bottom surface 310, a vertical side surface 320, a U-shaped inner side surface 320, a U-shaped outer side surface 330 and a top surface 340, the horizontal bottom surface 310 and the U-shaped inner side surface 320 are connected to jointly form a U-shaped space, and the position of the horizontal bottom 310 is higher than that of the cushion base plate 100b on both sides of the U-shaped connecting part, so that a hollow structure is formed below the U-shaped connecting part; the position of the cushion base plate 100b on the outer sides of the legs is provided with the second space 130b, and a safety structure fixing belt or an ISOFIX hard interface connecting piece 131b is mounted below the second space 130b, which can be detachably connected to the ISOFIX interface of the child safety seat fixing system.

[0440] The cushion base plate 100b is integrally formed with the U-shaped cover 300, directly adopting stamping or casting, or forging, or 3D printing, or machining, or injection molding, selective laser melting, or selective laser sintering, or metal deposition, or blow molding, or injection molding, or calendering, or suction molding, or mold forming, or laminating, or thermoforming, or vacuum forming, or rotational molding, RTM (resin transfer molding) molding, autoclave (AC) molding, oven molding, extrusion molding, mold molding, molding, pultrusion molding, filament winding molding, injection molding and contact molding process technology to form the U-shaped cover 300 in the middle of the cushion base plate 100b, as shown in FIG. 29, including a horizontal bottom surface 310, a vertical side surface 320, a U-shaped inner side surface 320, a U-shaped outer side surface 330 and a top surface 340, the same as the functional structure and embodiment 8, embodiment 9, embodiment 10, embodiment 11, embodiment 12 or embodiment 13, and the horizontal bottom surface 310 is used instead of the original mounting seat 110b.

[0441] Embodiment 15:

[0442] As shown in FIGS. 45-47, the quick release type seat safety structure provided in the present embodiment is provided with a safety belt 700, and the safety structure comprises:

[0443] The cushion base plate 100 is a plate-shaped structure arranged on the seat and used for bearing weight, and a hollow knot is arranged at the front end of the cushion base plate 100 between the two legs to form a first connecting part 110, and the first connecting part 110 is provided with a plurality of female buckles 180 with different distances from the seat backrest;

[0444] The safety belt connecting device 200 comprises a connecting end 210 and a plug-in end 220 fixedly connected with the connecting end 210, the connecting end 210 is provided with a sliding groove 250 capable of freely sliding on the safety belt, and the plug-in end 220 is provided with a lock hole 221 capable of being detachably and plug-in connected with the female buckle 180;

[0445] The protective cover is installed around the first connecting part 110 and is used for surrounding and protecting the safety belt connecting device 200 connected with the first connecting part 110; and

[0446] The cushion base plate 100 is wrapped to form a cushion.

[0447] The quick-release type seat safety structure of the application can be installed on a seat or a cushion of a vehicle, a transport tool or an amusement facility, or can be integrally manufactured with a seat or a cushion of a vehicle, a transport tool, an amusement facility or the like for protecting a pregnant woman and a child. By setting the cushion base plate 100 as a plate structure, the structural strength of the safety structure of the application can be improved to cope with sudden high impact force, and better protection can be provided to a user. The position between the two legs at the front end of the cushion base plate 100 is set as a hollow structure to form a first connecting part 110, a plurality of female buckles 180 of a safety belt are arranged on the first connecting part 110, and a safety belt connecting device 200 arranged on a safety belt 700 is selectively connected with the female buckles 180, so that the safety belt connecting device 200 and the first connecting part 110 can be quickly installed and detached, and the convenience of use is improved. The hollow structure provides space for the connection and fixation of the safety belt connecting device 200. After the safety belt is buckled according to the existing technical specification, the safety belt located at the abdomen of the user is pulled and fixed on the first connecting part 110 between the thighs of the user through the safety belt connecting device 200. In the event of a safety accident or braking, the contraction force of the safety belt will act on the thighs of the user, which can avoid the discomfort caused by the contraction of the safety belt pressing the abdomen of the user. By installing a protective cover around the first connecting part 110, the safety belt connecting device 200 connected to the first connecting part 110 can be protected, so that the safety belt connecting device 200 is buried in the main body of the cushion, which can prevent the safety belt connecting device 200 from impacting the root of the thigh of the user and causing secondary injury in the event of braking or traffic accident, and further improve the safety. By laying a buffer layer 400 on the cushion base plate 100, the comfort of the user can be improved, and the protective cover can be buried to avoid secondary injury caused by the protective cover to the user. The application is not only easy to operate and stable in structure, but also ensures safety and reliability while considering comfort.

[0448] In the embodiment, the female buckle 180 can be a common female buckle 180 in the existing technology, such as a general safety belt female buckle 180 on a car seat.

[0449] In some embodiments, an anti-collision protective pad 500 is also provided, which is arranged on the cushion base plate 100 on the side close to the user of the first connecting part 110, and is used to constrain the safety belt 700, so that the safety belt 700 forms a surface contact with the root of the thigh and the bottom of the abdomen of the user, and prevents the safety belt 700 from cutting the user. By adjusting the safety belt connected between the thighs through the anti-collision protective pad 500, the middle part of the safety belt forms a surface contact with the root of the thigh and the bottom of the abdomen of the user, which can not only improve the comfort of the user, but also avoid the safety belt cutting the user.

[0450] As shown in FIGS. 45-47, the anti-collision protection pad 500 is arranged on the seat cushion substrate 100 at a position near the first connecting portion 110 on the side close to the user. The anti-collision protection pad 500 is a cut-resistant layer made of a high-density fabric layer, silicone, rubber, sponge or other elastic material, and is generally a flexible pad. When in use, the anti-collision protection pad 500 is manually placed between the seat belt and the human body. While playing a role of isolation and buffering, the anti-collision protection pad 500 can also change the contact posture between the seat belt and the human body, and change the line contact between the seat belt and the human abdomen to face contact, thereby greatly improving the safety. When the user sits on the seat, the human abdomen and thighs are in a vertical state with a small bending angle. The applicant found in research and experiments that, as shown in FIG. 4, when the seat belt is connected to the first connecting portion 110, the seat belt that restrains the thigh root is in face contact with the thigh, but the seat belt is in side contact with the human abdomen. When a large impact force is encountered, although the seat belt has good restraint on the thigh at this time, the side of the seat belt can cause or cause injuries to the human abdomen, which not only has poor comfort, but also has a safety hazard. As shown in FIGS. 5 and 6, the anti-collision protection pad 500 is arranged according to the present application, and a cut-resistant layer made of a high-density fabric layer, silicone, rubber, sponge or other elastic material is used to fill the angle at the user's abdomen and groin, change the posture of the seat belt, and make the middle part of the seat belt in face contact with the thigh root and the bottom of the user's abdomen. The side of the seat belt no longer directly contacts the user. When a traffic accident or braking occurs, the tension of the seat belt is transferred to the anti-collision protection pad 500, which protects the user through the anti-collision protection pad 500, prevents the seat belt from cutting or impacting the user, and also improves the comfort of the user.

[0451] It should be noted that, considering the working principle of the anti-collision protection pad 500 of the present application, the anti-collision protection pad 500 of the present application can be any pad layer with a buffering function, and is not subjected to tension but only pressure. Therefore, the specific position and form can be relatively arbitrary, and the anti-collision protection pad 500 can be fixed on the seat cushion substrate 100, fixed on an external cladding layer, movably arranged, or directly wrapped on the seat belt. When in use, the anti-collision protection pad 500 can be slid to the thigh root restraint area. As shown in FIG. 5, the anti-collision protection pad 500 is in the shape of two long strips and is arranged between the seat belt and the thigh root. As shown in FIG. 6, the anti-collision protection pad 500 is in the shape of a triangle and covers the entire abdomen of the user, and can restrain the seat belt at the thigh root to prevent the seat belt from cutting or pressing the user's abdomen.

[0452] As shown in FIG. 46 and FIG. 47, the first connecting part 110 is a first protrusion 120 provided on the seat cushion substrate 100 and protruding upward at a position between the two legs at the front end of the seat cushion substrate 100, and a first slot 121 is provided on the first protrusion 120 for mounting and exposing a female buckle 180. A second space 130 is provided on the seat cushion substrate 100 at a position outside the two legs, and a sleeve 140 is mounted below the second space 130. The sleeve 140 is a profiled material, and both ends thereof are fixed to the bottom of the seat cushion substrate 100 and the end of the second space 130, respectively, to form a hollow structure below the second space. By providing the first protrusion 120 and the second space 130 on the seat cushion substrate 100, on the one hand, the protrusion can form a hollow structure on the seat cushion substrate 100, providing space for the connection and fixation of the safety belt connecting device 200 and the installation of the connecting assembly. On the other hand, the protrusion can form a hollow structure without increasing the thickness of the seat cushion substrate 100, reducing the space occupation of the seat cushion substrate 100, and greatly reducing the weight of the safety structure, achieving lightweight design while ensuring structural strength, making it easy to carry.

[0453] A length-adjustable connecting assembly is mounted in the hollow structure formed by the second space 130 and the sleeve 140. The connecting assembly can pass out from the back of the seat cushion substrate 100 and be detachably connected to the ISOFIX interface of the child safety seat fixing system. Specifically, the connecting assembly is a safety structure fixing belt or an ISOFIX hard interface connecting piece of the child safety seat fixing system. One end of the safety structure fixing belt passing out of the seat cushion substrate 100 is provided with a hook that can be detachably connected to the ISOFIX interface of the child safety seat fixing system. One end of the ISOFIX hard interface connecting piece of the child safety seat fixing system passing out of the safety structure is provided with a buckle that can be detachably connected to the ISOFIX interface of the child safety seat fixing system. By setting the connecting assembly as a safety structure fixing belt or an ISOFIX hard interface connecting piece of the child safety seat fixing system, the safety structure of the present application can be connected to the ISOFIX interface of the child safety seat fixing system on the rear seat according to the use specifications of different countries, so that users whose abdomen cannot be pressed can sit in the rear row, providing better safety protection. The length of the connecting assembly can be adjusted, so that the safety structure of the present application can be applied to seats of different sizes. When the connecting assembly is set as a safety structure fixing belt, the hook on the safety structure fixing belt or the buckle on the ISOFIX hard interface connecting piece can be connected to a fixing belt with a buckle. The fixing belt is tied to the backrest of the front seat, and the buckle is fixed, thereby fixing the safety structure on the front seat, providing protection for the driver or the user sitting in the front row.

[0454] As shown in FIG. 45, FIG. 46, FIG. 48 and FIG. 49, the protective cover is a U-shaped cover 300 including a horizontal bottom surface 310, a U-shaped inner side surface 320, a U-shaped outer side surface 330 and a top surface 340, the height of the bottom of the horizontal bottom surface 310 is the same as the height of the first protrusion 120, the horizontal bottom surface 310 is manufactured integrally with the base plate or separately, and then is installed on the first protrusion 120 by welding, bolting, riveting or other fixing methods and closely fits the top of the first protrusion 120, the shape and size of the horizontal bottom surface 310 are adapted to the top of the first protrusion 120, and the horizontal bottom surface 310 is provided with a second notch 311 matching the position and size of the female buckle 180. During installation, the second notch 311 of the horizontal bottom surface 310 is aligned with the first notch 121 of the top of the first protrusion 120 before being fixed, so that the safety belt connecting device 200 can pass through the second notch 311 and be connected with the female buckle 180 in the first notch 121, thereby realizing that the U-shaped inner side surface 320 and the U-shaped outer side surface 330 of the U-shaped cover 300 surround and protect the safety belt connecting device 200 connected with the first protrusion 120. The depth of the U-shaped inner side surface 320 of the U-shaped cover 300 of the present application is greater than or slightly greater than (such as greater than 0.2-0.5 cm or so) the height of the safety belt connecting device 200, so that the U-shaped cover 300 can completely cover the safety belt connecting device 200, avoiding secondary injury such as impact on the user's thigh root caused by the safety belt connecting device 200.

[0455] As shown in FIGS. 48 and 49, the thickness of each face of the U-shaped cover 300 is 0.4-5.0 mm, the bottom of the U-shaped outer side 330 is fixed on the cushion base plate 100 and located on both sides of the bottom of the first protrusion 120. The U-shaped inner side 320 and the U-shaped outer side 330 are both three-slope gradually protruding shapes, specifically, as shown in FIG. 8, the top of the U-shaped inner side 320 is inclined to the direction of the U-shaped outer side 330, and the included angle a with the horizontal bottom surface 310 is 95°-110°; the top of the U-shaped outer side 330 is inclined to the direction of the U-shaped inner side 320, and the included angle β with the cushion base plate 100 is 100°-120°. The U-shaped inner side 320 and the U-shaped outer side 330 are set to be slope-shaped, on the one hand, the stability of the U-shaped cover 300 can be improved, the U-shaped cover 300 can stably wrap the safety belt connecting device 200 in all directions, on the other hand, the impact pressure of the U-shaped cover 300 can be released and relieved, when the vehicle, the transport tool or the amusement facility collides, the user can be protected from the frontal impact with the U-shaped cover 300, the safety of the user can be protected, and meanwhile, the installation operation space of the safety belt connecting device 200 can be increased, the installation and dismounting of the safety belt connecting device 200 can be facilitated; through experiments, it is verified that by selecting the above-mentioned angle range of the U-shaped inner side 320 and the U-shaped outer side 330, under the condition of the same amount of material, the strength of the U-shaped cover 300 of the application is increased by about 10%-20%, by setting the angle β of the U-shaped outer side 330 to 100°-120°, the frontal impact force can be unloaded by sliding upward, about 20-30% of the impact force can be unloaded, the safety of the user can be effectively protected, and the harm (mainly the harm to the thigh root) to the user caused by the safety belt connecting device 200 on the cushion when responding to the impact can be avoided. The connection between the top surface 340 and the U-shaped inner side 320 and the U-shaped outer side 330 is set to be smooth round corner connection, the impact pressure of the U-shaped cover 300 can be further released and relieved, and the user can be avoided from being bumped.

[0456] As a preferred, the cushion base plate 100, the U-shaped cover 300 and the safety belt connecting device 200 are all made of high-strength metal, high-strength alloy, high-strength carbon fiber, high-strength plastic, high-strength nylon, high-strength glass steel, high-strength ceramic or high-molecular material, etc., the hole groove on the horizontal bottom surface 310 of the cushion base plate 100 and the U-shaped cover 300 is made by laser cutting, water cutting, plasma cutting, wire cutting or stamping, etc., so as to further improve the structural strength of the safety structure.

[0457] In some embodiments, as shown in Figure 50, the connecting end 210 includes a fixed part 211 and a movable part 212, the fixed part 211 is integrally made with the insertion end 220, the movable part 212 is detachably connected with the fixed part 211, and a gap 216 forming a sliding groove is provided between the movable part 212 and the fixed part 211; specifically, the insertion end 220 can be a rectangular insertion piece, and a locking hole 221 is provided on the insertion piece, which can be circular or oval, triangular or other special-shaped; the connecting end 210 includes a fixed part 211 and a movable part 212, the fixed part 211 is integrally made with the insertion end 220, and the fixed part 211 and the movable part 212 can be strip-shaped structural parts themselves, the fixed part 211 is perpendicular to the insertion end 220, and ear plates 213 protruding away from the insertion end 220 are provided at both ends of the fixed part 211, the movable part 212 is fixed on the ear plates 213 by transverse fasteners 214, and the gap 216 for the safety belt to pass through freely is generated between the movable part 212 and the fixed part 211 by the ear plates 213, so that the safety belt connecting device can be freely and slidably installed on the safety belt; when it is necessary to fix or detach the safety belt connecting device on the safety belt, the fixed part 211 and the movable part 212 can be detached by removing the fasteners 214 at both ends, which is convenient for fixing and detaching the safety belt connecting device.

[0458] In some embodiments, as shown in Figure 45, the female buckle 180 is fixed in the first connecting part 110, so an opening should also be provided on the first connecting part 110 to expose the insertion port of the female buckle 180.

[0459] In the non-use state of the safety belt connecting device 200 of the present application, the connecting end 210 is connected with the safety belt on the seat, and in use, when the user sits on the safety structure, the insertion end 220 of the safety belt connecting device 200 is fixed on the female buckle 180 of the first connecting part 110, and according to the size and body shape of the user's abdomen, the female buckle 180 at the appropriate position is selected to fix the insertion end 220, so that the connection position of the insertion end 220 with the first connecting part 110 can be adjusted, the installation position of the safety belt connecting device 200 can be adjusted according to the size and body shape of the user's abdomen, the safety belt on the vehicle or amusement facility is bound at a position as close to the user's thigh root as possible, the displacement of the user when braking or in an accident is minimized, the safety belt generates binding force in time, the safety airbag can be triggered in time in the event of a serious accident, the safety of the safety structure of the present application is improved, and the comfort of the user when using the safety structure is also improved. After use, the insertion end 220 can be detached from the connection.

[0460] As a preferred embodiment, as shown in FIG. 45, the middle and both sides of the middle of the cushion base plate 100 are provided with a hollow structure, which can greatly reduce the weight of the cushion base plate 100 while ensuring the structural strength of the cushion base plate 100, so that the safety structure of the present application is easy to carry and use.

[0461] As a preferred embodiment, the cushion base plate 100 is made of metal, alloy, high-strength carbon fiber, high-strength plastic, high-strength nylon, high-strength glass steel, high-strength ceramic or high-molecular material, etc. with high structural strength. Through the high-strength cushion base plate 100, the safety structure of the present application can resist the impact force caused by traffic accidents or braking, and provide stable safety protection for users whose abdomen cannot be pressed.

[0462] As a preferred embodiment, the clamping sleeve 140 is made of plastic, which can provide sufficient support strength and reduce the weight of the safety structure to meet the lightweight design.

[0463] As a preferred embodiment, the buffer layer 400 is made of high-density fabric, sponge, rubber pad, sponge pad, silica gel pad or other cushioning materials, which can improve the comfort of the user and bury the protective cover to avoid secondary injury caused by the protective cover.

[0464] As a preferred embodiment, as shown in FIG. 46 and FIG. 47, the buffer layer 400 is further provided with a wrapping layer 600, which is made of flexible materials such as cloth, etc., to further improve the comfort of the user.

[0465] As a preferred embodiment, the height adjusting pad is installed below the cushion base plate 100 through a connecting piece, and the connecting piece is a connecting hole, a connecting slot or a connecting block provided on the cushion base plate. In this embodiment, as shown in FIG. 45, the cushion base plate 100 is provided with a plurality of connecting holes 170, and the height adjusting pad can be installed below the cushion base plate 100 through the connecting holes 170. The safety structure of the present application can choose whether to install the height adjusting pad according to the height of different users, and choose the appropriate thickness of the height adjusting pad, so that adults and children of different heights can use the safety structure of the present application.

[0466] Embodiment 16:

[0467] Other than the same as embodiment 15, the difference lies in the structure of the safety belt connecting device 200, in this embodiment, as shown in Figure 51, the connecting end 210 includes a fixed part 211 and a movable part 212, the fixed part 211 is integrally made with the plug-in end 220, the fixed part 211 and the movable part 212 can be strip-shaped structural parts, the setting direction of the fixed part 211 is perpendicular to the plug-in end 220, the fixed part 211 is provided with an ear plate 213 protruding away from the plug-in end 220 at both ends, the movable part 212 is fixed on the ear plate 213 through a longitudinal bolt 215, the gap 216 for the safety belt to pass through freely is generated between the movable part 212 and the fixed part 211 through the setting of the ear plate 213, so that the safety belt connecting device can be freely and slidably installed on the safety belt.

[0468] Embodiment 17:

[0469] Other than the same as embodiment 15, the difference lies in the structure of the safety belt connecting device 200, in this embodiment, as shown in Figure 52, the connecting end 210 is a flat ring 217, the inner diameter of the flat ring 217 forms a sliding groove 250, a first notch (the position occupied by the opening and closing rod 218 in Figure 11) is formed on one side of the flat ring 217, the flat ring 217 at one end of the first notch is hinged with an opening and closing rod 218, the other end of the opening and closing rod 218 is detachably connected with the flat ring 217 at the other end of the first notch through a threaded sleeve 219, forming a lock buckle in the sliding groove 250 where the safety belt is located, specifically, the threaded sleeve 219 is provided with internal threads, and the other end of the first notch is provided with external threads; in this embodiment, the threaded sleeve 219 is exemplarily sleeved on the opening and closing rod 218, which can be threadedly connected with the opening and closing rod 218, or can be gap 216 connected; when it is gap 216 connected, generally, the opening and closing rod 218 should also be provided with a limiting structure (not shown in Figure 52), such as a limiting block, etc., to prevent the threaded sleeve 219 from slipping off, so as to improve the reliability in use.

[0470] Embodiment 18:

[0471] Other than the same as embodiment 15, the difference is the structure of the safety belt connecting device 200, in this embodiment, as shown in figure 23 and figure 24, the safety belt connecting device includes two connecting plates 230 and a fixed shell 240, one end of the connecting plate 230 is a plug-in part 231, the other end is a second connecting part 232, the plug-in part 231 is provided with a lock hole 221, the second connecting part 232 is provided with a strip-shaped slot 233, and the strip-shaped slot 233 is provided with a second gap 234 for the safety belt to enter and exit, the two connecting plates 230 are fixed together after being attached, the lock hole 221 is aligned after being attached, and the second gap 234 on the strip-shaped slot 233 is arranged staggered, the arrow direction shown in figure 54 is the plug-in direction, as a preferred embodiment, the strip-shaped slot 233 is perpendicular to the plug-in direction.

[0472] For example, the center line of the lock hole 221 and the strip-shaped slot 233 is defined as the central axis 235, the connecting plate 230 is symmetrically arranged with the central axis 235 except the second gap 234, the shape and size of the two connecting plates 230 are completely the same, and one of the connecting plates 230 is turned over 180 degrees when attached, so that the two second gaps 234 are staggered.

[0473] For example, in order to more conveniently fix the two plug-in plates, the fixed shell 240 is detachably connected by two half shells 241, the two half shells 241 are both provided with a sunken groove 242 matched with the second connecting part 232 of the connecting plate 230 and a through groove 243 matched with the strip-shaped slot 233, generally, the two half shells 241 are plastic shells with certain deformation ability; therefore, detachable connection can be achieved by including but not limited to buckles, pin shafts or interference fit, so as to improve the convenience of disassembly.

[0474] This embodiment solves the problems of quick connection and reliability after connection of the safety belt and the safety belt connecting device 200 by attaching the two staggered connecting plates 230, after connection in this embodiment, the stress of the safety belt is completely converted into the stress of the connecting plate 230 body, the reliability is good, the safety is high, and there is no bolt or screw structure, so that it can be installed by hand without tool limitation, and has strong practicability. As the fixed shell 240 attaching the two connecting plates 230 together is not stressed when the safety belt is impacted, and the fixed shell 240 is not impacted by the safety belt, it can be made of plastic parts and designed with easy disassembly structure, such as buckles, plastic interference fit and other common structures, which has good safety and high stability, and avoids the situation that the disassembly structure is impacted by the safety belt in other designs, so that the application has very high safety and practicability.

[0475] Embodiment 19:

[0476] In this embodiment, except for the cushion base plate 100, other parts are the same as those in Embodiment 15. As shown in FIGS. 55-57, the cushion base plate 100 is a hollow structure plate, the hollow structure at the front end of the cushion base plate 100 between the two legs forms a first connecting part 110, and the hollow structure at the position outside the two legs of the cushion base plate 100 forms a mounting groove 150 for mounting the safety belt fixing belt. The hollow structure plate can provide space for the connection and fixation of the safety belt connecting device 200 and the installation of the safety belt fixing belt on one hand, and on the other hand, can greatly reduce the weight of the cushion base plate 100, so as to realize lightweight design while ensuring structural strength, so that the safety structure of the present application is convenient to carry and use.

[0477] As a preferred, the hollow structure plate is provided with a plurality of cushion blocks 160. The arrangement of the cushion blocks 160 can not only limit the installation space and movement range of the safety belt fixing belt, but more importantly, can also improve the structural strength of the safety structure and ensure its safety performance.

[0478] As shown in FIGS. 58 and 59, the protective cover is a U-shaped cover 300 including a horizontal bottom surface 310, a U-shaped inner side surface 320, a U-shaped outer side surface 330, a vertical side surface 350, and a top surface 340. The horizontal bottom surface 310 is provided with two long grooves corresponding to the clamping grooves on the first connecting part 110, and the plug-in end 220 of the corresponding safety belt connecting device 200 is a buckle (not shown in the figure). The U-shaped inner side surface 320 and the U-shaped outer side surface 330 are also arranged in an inclined manner, and the arrangement manner is the same as that in Embodiment 15. The horizontal bottom surface 310 and the vertical side surface 350 are respectively installed on the top of the first connecting part 110 and the front wall 114 by welding, bolt, rivet fixation or other methods. The shape and size of the horizontal bottom surface 310 are adapted to the top of the first connecting part 110 and closely fit the top of the first connecting part 110, so that the safety belt connecting device 200 is connected to the first connecting part 110 through the horizontal bottom surface 310 in the U-shaped cover 300, thereby realizing that the U-shaped inner side surface 320 and the U-shaped outer side surface 330 surround and protect the safety belt connecting device 200 connected to the first connecting part 110. The vertical side surface 350 is arranged at one end of the horizontal bottom surface 310, and the height of the vertical side surface 350 is adapted to the height of the front wall 114 of the first connecting part 110 and is fixed on the front wall 114 of the first connecting part 110, so that the connection between the U-shaped cover 300 and the first connecting part 110 is more stable, thereby improving the strength and safety performance of the safety structure. Other parts of the U-shaped cover 300 are the same as those in Embodiment 15.

[0479] Embodiment 20:

[0480] Other than the structure of the safety belt connecting device 200 is different, in this embodiment, as shown in Figure 60, the connecting end 210 includes a fixed part 211 and a movable part 212, the fixed part 211 is integrally made with the plug-in end 220, the fixed part 211 and the movable part 212 can be strip-shaped structural parts, the setting direction of the fixed part 211 is perpendicular to the plug-in end 220, the fixed part 211 is provided with a single ear hole 261 at each end, the movable part 212 is provided with a double ear hole 262 at each end, the double ear hole 262 at one end of the movable part 212 is installed on the single ear hole 261 at one end of the fixed part 211 through a rotating shaft 263, the double ear hole 262 at the other end of the movable part 212 is detachably connected with the single ear hole 261 at the other end of the fixed part 211 through a fastener 214, a gap 216 for the safety belt to pass through freely is generated between the movable part 212 and the fixed part 211, so that the safety belt connecting device 200 is freely and slidably installed on the safety belt.

[0481] Embodiment 21:

[0482] This embodiment is the same as embodiment 15, except that the structure of the connecting end 210 of the safety belt connecting device 200 is different, as shown in Figure 31, the connecting end 210 includes a fixed part 211 and a movable part 212, the fixed part 211 is integrally made with the plug-in end 220, the fixed part 211 and the movable part 212 can be strip-shaped structural arches, the setting direction of the fixed part 211 is perpendicular to the plug-in end 220, the fixed part 211 is provided with a double ear hole 262 at each end, the movable part 212 is provided with a single ear hole 261 at each end, the single ear hole 261 at one end of the movable part 212 is installed on the double ear hole 262 at one end of the fixed part 211 through a rotating shaft 263, the single ear hole 261 at the other end of the movable part 212 is detachably connected with the double ear hole 262 at the other end of the fixed part 211 through a fastener 214, a gap 216 for the safety belt to pass through freely is generated between the movable part 212 and the fixed part 211, so that the safety belt connecting device 200 is freely and slidably installed on the safety belt.

[0483] Embodiment 22:

[0484] The embodiment is the same as embodiment 15, except that the structure of the connecting end 210 of the safety belt connecting device 200 is different, as shown in FIG. 62, the connecting end 210 comprises a fixed part 211, a movable part 212 and a nut 264, the fixed part 211 is integrally made with the insertion end 220, the fixed part 211 and the movable part 212 are half-cylindrical columnar parts, the fixed part 211 is perpendicular to the insertion end 220, one end of the fixed part 211 and the movable part 212 is connected through a rotating shaft 263, and the other end of the fixed part 211 and the movable part 212 is provided with a half thread, when the fixed part 211 and the movable part 212 are close to each other, a complete cylinder is formed, the two half threads form a complete thread matched with the nut 264, a gap 216 for the safety belt to pass through is reserved in the middle of the cylinder, and the fixed part 211 and the movable part 212 are detachably fastened together through the nut 264.

[0485] Embodiment 23

[0486] As shown in FIGS. 63-64, the rotating locking type safety belt connecting mechanism provided in the embodiment is installed on a seat or a child safety seat or a safety cushion of a vehicle or an amusement facility, a safety belt is provided on the seat or the safety cushion, and the rotating locking type safety belt connecting mechanism comprises:

[0487] A safety belt connecting device 100, comprising a first connecting end 110 capable of being connected with the safety belt (located at the abdomen of the passenger when the vehicle safety belt is tied) and a second connecting end 120 capable of being connected with the seat or the safety cushion, the second connecting end 120 comprises a connecting seat 121 and a connecting rod 122 for fixing the connecting seat 121 on the first connecting end 110, the connecting rod 122 has at least a first direction cross-sectional width and a second direction cross-sectional width, and the first direction cross-sectional width is smaller than the second direction cross-sectional width;

[0488] A connecting part 200 is installed on the seat or the safety cushion and used for connecting with the second connecting end 120, the connecting part 200 is provided with an installation hole 210 and a plurality of limiting holes 220 communicated by a sliding groove 230, the size of the installation hole 210 is matched with the connecting seat 121, the width of the sliding groove 230 is between the first direction cross-sectional width and the second direction cross-sectional width, and the size of the limiting hole 220 is greater than the second direction cross-sectional width of the connecting rod, so that the connecting rod 122 can freely slide in the sliding groove 230 in the first direction cross-sectional width direction, and the connecting rod 122 is clamped in the limiting hole 220 when it is rotated to the second direction cross-sectional width under the action of an external force.

[0489] The application is characterized in that the connection part 200 is arranged on the seat of the vehicle or the amusement facility or the child car safety seat or the safety cushion, the safety belt connecting device 100 arranged on the safety belt is connected to the connection part 200, after the safety belt is buckled according to the prior art specification, the safety belt located at the abdomen is pulled and fixed on the connection part 200 by the safety belt connecting device 100, when the safety accident or the brake occurs, the contraction force of the safety belt is applied on the thighs of the passenger, the harm and the uncomfortable feeling caused by the compression of the abdomen of the passenger by the safety belt contraction to the people who cannot bear the pressure on the abdomen such as pregnant women and the like can be avoided, the sliding groove 230 and the plurality of limiting holes 220 matched with the connecting rod 122 of the second connecting end 120 are arranged on the connection part 200, the connecting position of the safety belt connecting device 100 and the connection part 200 is adjustable, the connecting rod 122 can pass through the sliding groove 230 and move freely in the sliding groove 230, the appropriate limiting hole 220 is selected to be locked and fixed according to the size of the abdomen and the body shape of different passengers, therefore, the safety belt connecting mechanism of the application can be applied to the passengers with different body shapes, the comfort of use is improved, the safety belt connecting device is convenient to install and operate, at the same time, the safety belt can be bound at the position as close as possible to the root of the thighs of the passenger, the displacement of the user when the brake or the accident occurs is reduced as much as possible, the safety belt generates the binding force in time, the safety air bag is triggered in time to open when the serious accident occurs, the safety of the safety cushion of the application is improved.

[0490] It should be noted that in order to facilitate the installation of the connection part 200, the seat of the vehicle generally needs to be modified or the safety seat or the safety cushion containing the cushion base plate is installed on the seat, the technical applicant has applied for the same in other patents.

[0491] In some embodiments, the first direction and the second direction of the connecting rod 122 are perpendicular, the clamping of the safety belt connecting device 100 can be realized by rotating the connecting rod.

[0492] The connecting rod 122 of the second connecting end 120 in the present application is a cylindrical rod with two opposite faces cut into planes, the first direction cross-sectional width is the distance between the two planes of the cylindrical rod, and the second direction cross-sectional width is the diameter of the cylindrical rod. The connecting seat 121 is a disc with a diameter greater than the second direction cross-sectional width of the connecting rod. By cutting the two opposite faces of the cylindrical rod into planes, the first direction cross-sectional width and the second direction cross-sectional width of the connecting rod 122 are made inconsistent. Since the width of the sliding groove 230 is between the first direction cross-sectional width and the second direction cross-sectional width, the connecting rod 122 can move forward and backward in the sliding groove 230 when the two opposite planes of the connecting rod 122 face the two sides of the sliding groove 230. By rotating the connecting rod 122 to align the two arc faces with the sliding groove 230, the second connecting end 120 can be locked with the connecting part 200, and the safety belt connecting device 100 can be connected to the seat or the safety cushion, thereby fixing the safety belt to the thighs of the passenger.

[0493] Specifically, as shown in FIGS. 63 and 64, the diameter of the mounting hole 210 is greater than or slightly greater (0.5-3 mm larger) than the diameter of the connecting seat 121; the diameter of the limiting hole 220 is greater than or slightly greater (0.5-3 mm larger) than the maximum diameter of the connecting rod 122, and the diameter of the limiting hole 220 is smaller than the diameter of the connecting seat 121; the width of the sliding groove 230 is greater than or slightly greater (0.5-2 mm larger) than the distance between the two planes of the connecting rod 122, and smaller than the diameter of the two arc faces of the connecting rod 122, so that the width of the sliding groove 230 is adapted to the distance between the two planes of the connecting rod 122; the thickness of the sliding groove 230 is smaller than the height of the connecting rod 122, so that the connecting rod 122 can pass through the sliding groove 230 and move forward and backward in the sliding groove 230.

[0494] When it is necessary to fix the safety belt connecting device 100 on the connecting part 200, first, the connecting seat 121 is passed through the mounting hole 210 on the connecting part 200, at this time the safety belt on the vehicle or the amusement facility is in a flat state, the two arc surfaces of the connecting rod face the two sides of the sliding groove, then the second connecting end 120 is rotated, the two planes of the connecting rod 122 face the two sides of the sliding groove 230, at this time the connecting rod 122 can slide in the sliding groove 230, and at this time the safety belt is in a rotating or twisting state, when the connecting rod 122 slides to the limiting hole 220 according to the size of the passenger, the safety belt connecting device 100 is loosened, at this time the safety belt connecting device 100 automatically rotates to the locking position, the two arc surfaces of the connecting rod 122 face the two sides of the sliding groove 230, and since the diameter of the arc surface of the connecting rod 122 is greater than the width of the sliding groove 230, at this time the connecting rod 122 cannot freely move in the sliding groove 230, and since the diameter of the limiting hole 220 is smaller than the diameter of the connecting seat 121, the second connecting end 120 is fixed in the limiting hole 220, and since at this time the safety belt on the vehicle or the amusement facility is in a normal flat state, if there is no external force to rotate the safety belt connecting device 100, the safety belt connecting device 100 will be fixed in the limiting hole 220 in the locking state, thereby fixing the safety belt connecting device 100, and realizing the connection and fixation of the safety belt connecting device 100 and the connecting part 200.

[0495] The first connecting end 110 comprises a fixed rod 111 and a movable rod 112 which are detachably connected. As shown in Fig. 63, the two ends of the fixed rod 111 are upwardly protruding and each is provided with a connecting hole, and the two ends of the movable rod 112 are downwardly protruding and each is provided with a connecting hole and a mounting slot which are matched with the two ends of the fixed rod 111, the two ends of the fixed rod 111 are respectively mounted in the mounting slots of the two ends of the movable rod 112, one end of the fixed rod 111 and the movable rod 112 is connected through a rotating pair 113 passing through the connecting holes, and the other end is detachably connected through a fastener 114 passing through the connecting holes, so that one end of the movable rod 112 can rotate around the fixed rod 111 to realize the opening and closing of the first connecting end 110. Specifically, one end of the fixed rod 111 and the movable rod 112 is connected through a movable connecting device such as a screw, a screw rod, a rivet or a hinge, and the other end is detachably connected through a fastener 114 such as a bolt or a pin shaft. As a preferred embodiment, the end of the movable rod 112 where the fastener 114 is mounted is provided with a sunken groove, so that the end of the fastener 114 can be hidden in the sunken groove after installation, without causing interference to the passengers; the connecting hole at the end of the movable rod 112 where the fastener 114 is mounted is a threaded hole, and the fixed rod 111 and the movable rod 112 are fixed by threaded connection through the fastener 114. When the first connecting end 110 is opened by rotating the movable rod 112, the safety belt is pulled into the space between the fixed rod 111 and the movable rod 112, and then the movable rod 112 is rotated and the other end of the fixed rod 111 and the movable rod 112 is tightened through the fastener 114 to close the first connecting end 110, thereby realizing the connection of the safety belt connecting device 100 and the safety belt.

[0496] As a preferred embodiment, as shown in Fig. 63, a gap 115 through which the safety belt passes is provided between the fixed rod 111 and the movable rod 112, so that the safety belt connecting device 100 can move on the safety belt, which not only facilitates the connection of the safety belt connecting device 100 to the connecting part 200, but also allows the safety belt connecting device 100 to be adjusted to a comfortable position for the passenger on the safety belt, thereby further improving the comfort of the passenger.

[0497] The safety belt connecting device 100 of the present application keeps the first connecting end 110 connected with the safety belt in a non-use state, and when used, the second connecting end 120 of the safety belt connecting device 100 is fixed to the connecting part 200 after the passenger sits on the seat or the safety cushion, and the appropriate limiting hole 220 is selected to fix the connecting rod 122 according to the size of the passenger's abdomen and body shape, thereby ensuring the comfort of the passenger, and after use, the second connecting end 120 can be detached from the connecting part 200.

[0498] As a preferred embodiment, the connecting part 200 is installed in the middle of the seat or safety cushion between the two legs and / or at the two front corners of the seat or safety cushion. When the passenger is wearing trousers, the safety belt tied according to the prior art standard can be pulled and fixed at the position close to the thigh root in the middle of the seat or safety cushion between the two legs or at the two front corners of the seat or safety cushion by the rotating locking type safety belt connecting mechanism of the present application, so as to transfer the pressure of the safety belt on the passenger's abdomen to the thighs, avoid the injury to the abdomen of the person who cannot bear pressure such as pregnant women caused by the contraction of the safety belt pressing the passenger's abdomen in the case of a safety accident or braking, and also avoid the discomfort caused by the contraction of the safety belt pressing the passenger's abdomen in the case of a safety accident or braking. When the passenger is wearing a skirt, it is not convenient to fix the safety belt at the position close to the thigh root in the middle of the seat or safety cushion between the two legs, so the safety belt can be fixed at the position close to the edge of the seat or safety cushion between the two legs or at the two front corners of the seat or safety cushion, so as to transfer the pressure of the safety belt on the passenger's abdomen to the thighs.

[0499] As a preferred embodiment, the safety belt connecting device 100 and the connecting part 200 are made of high-strength metal, alloy, high-strength carbon fiber, high-strength plastic, high-strength nylon, high-strength glass steel, high-strength ceramic or high-molecular material, etc., which can improve the structural strength of the rotating locking type safety belt connecting mechanism of the present application and ensure the safety of the passenger.

[0500] Embodiment 24:

[0501] In this embodiment, except that the first connecting end 110 of the safety belt connecting device 100 is different, the other parts are the same as those in Embodiment 23. As shown in FIG. 65, in this embodiment, the fixed rod 111 is a U-shaped structure with a first space 116 at both ends, the first space 116 is provided with a connecting hole and a mounting groove at both ends, the movable rod 112 is a U-shaped structure with a second space 117 at both ends, the second space 117 is provided with a connecting hole, the second space 117 of the movable rod 112 is mounted in the mounting groove at both ends of the fixed rod 111, one end of the fixed rod 111 and the movable rod 112 is connected through the rotating pair 113 passing through the connecting hole, and the other end is detachably connected through the fastener 114 passing through the connecting hole, so that the movable rod 112 can rotate around one end of the fixed rod 111, and the opening and closing of the first connecting end 110 are realized. After the first connecting end 110 is closed, there is a gap 115 between the fixed rod 111 and the movable rod 112 for the safety belt to pass through, so that the safety belt connecting device 100 can move on the safety belt.

[0502] Embodiment 25:

[0503] In this embodiment, except for the first connecting end 110 of the safety belt connecting device 100, the other parts are the same as those in Embodiment 23. As shown in FIG. 66, in this embodiment, the two ends of the fixed rod 111 and the movable rod 112 are detachably connected by fasteners 114. Specifically, the fixed rod 111 is in U-shaped structure with third protruding portions 118 provided at the two ends, the third protruding portions 118 are provided with through holes, and the movable rod 112 is provided with threaded holes at the two ends. The fasteners 114 such as bolts or screws are screwed through the through holes of the third protruding portions 118 and the threaded holes at the two ends of the movable rod 112 to achieve the connection and fixation of the fixed rod 111 and the movable rod 112. When it is needed to fix or detach the safety belt connecting device 100 on the safety belt, the fasteners 114 at the two ends are removed, which facilitates the fixation and detachment of the safety belt connecting device 100. After the first connecting end 110 is closed, there is a gap 115 between the fixed rod 111 and the movable rod 112 for the safety belt to pass through, so that the safety belt connecting device 100 can move on the safety belt.

[0504] Embodiment 26:

[0505] In this embodiment, except for the first connecting end 110 of the safety belt connecting device 100, the other parts are the same as those in Embodiment 23. As shown in FIG. 67, in this embodiment, one end of the fixed rod 111 and the movable rod 112 is rotatably connected by a revolute pair 113, and the other end is provided with a matching external thread and detachably connected by a threaded fastener 114. The side of the fixed rod 111 and the movable rod 112 in contact with each other is provided with a groove, so that after the first connecting end 110 is closed, there is a gap 115 between the fixed rod 111 and the movable rod 112 for the safety belt to pass through, so that the safety belt connecting device 100 can move on the safety belt.

[0506] Embodiment 27:

[0507] As shown in FIGS. 68 to 70, the safety belt connecting mechanism provided in this embodiment is a clamping groove locking type safety belt connecting mechanism installed on a seat or a child safety seat of a vehicle or a recreational facility or a safety cushion, a safety belt is provided on the seat or the safety cushion, and the clamping groove locking type safety belt connecting mechanism comprises:

[0508] The safety belt connecting device 100 comprises a first connecting end 110 capable of being connected with the safety belt (located at the abdomen of the passenger when the vehicle safety belt is buckled) and a second connecting end 120 capable of being connected with the seat or the safety cushion, the second connecting end 120 comprises a connecting seat 121 and a connecting rod 122 fixed at the connecting seat 121 and the first connecting end 110 at the two ends respectively, and the cross-sectional size of the connecting rod 122 is smaller than the cross-sectional size of the connecting seat 121;

[0509] The connecting part 200 is installed on the seat or the safety cushion and is used for being connected with the second connecting end 120, the connecting part 200 is provided with a sliding groove 230 and a mounting hole 210 communicated with the sliding groove 230, the bottom of the sliding groove 230 is provided with a plurality of limiting grooves 220, the sizes of the mounting hole 210 and the limiting grooves 220 are matched with the size of the connecting seat 121, and the width of the sliding groove 230 is matched with the size of the connecting rod 122.

[0510] The length of the connecting rod 122 is greater than the depth of the sliding groove 230, after the connecting seat 121 passes through the mounting hole 210, under the external force, the connecting rod 122 is freely slid in the sliding groove 230, after the external force is removed, under the tightening force of the safety belt, the connecting seat 121 is clamped in the corresponding limiting groove 220.

[0511] The connecting part 200 is installed on the seat or the safety cushion and is used for being connected with the second connecting end 120, the connecting part 200 is provided with a sliding groove 230 and a mounting hole 210 communicated with the sliding groove 230, the bottom of the sliding groove 230 is provided with a plurality of limiting grooves 220, the sizes of the mounting hole 210 and the limiting grooves 220 are matched with the size of the connecting seat 121, and the width of the sliding groove 230 is matched with the size of the connecting rod 122.

[0512] It should be noted that when the card slot locking type safety belt connecting mechanism of the present application is directly installed on the seat, in order to facilitate the installation of the connecting part 200, it is generally necessary to modify the vehicle seat or safety cushion or set the cushion base plate, and then fix the cushion base plate on the seat or safety cushion. The technical applicant has simultaneously applied for other patents. The card slot locking type safety belt connecting mechanism of the present application can also be installed on the safety cushion, and then the safety cushion is fixed on the seat. Thus, the protection of the occupant is realized.

[0513] In the present application, the connecting rod 122 is provided as a cylindrical rod with a height greater than the thickness of the sliding groove 230, and the connecting seat 121 is a disc with a diameter greater than that of the connecting rod 122, so that the connecting rod 122 can pass through the sliding groove 230 and move freely therein. When the limiting groove 220 is moved to the appropriate position according to the body type of the passenger, the tensioning safety belt connecting device 100 can fix the connecting seat 121 in the limiting groove 220 at the corresponding position, and then connect the safety belt connecting device 100 to the seat or safety cushion, thereby fixing the safety belt to the passenger's thigh.

[0514] Specifically, as shown in FIGS. 68-70, the diameter of the mounting hole 210 and the limiting groove 220 is greater than or slightly greater (0.5-3mm larger) than the diameter of the connecting seat 121, so that the connecting seat 121 can smoothly pass through the mounting hole 210 and smoothly enter the limiting groove 220; the width of the sliding groove 230 is greater than or slightly greater (0.5-2mm larger) than the diameter of the connecting rod 122, and is less than the diameter of the connecting seat 121, so that the width of the sliding groove 230 is adapted to the diameter of the connecting rod 122, so that when the connecting seat 121 is separated from the limiting groove 210, the connecting rod 122 can smoothly and freely slide in the sliding groove 230; the thickness of the limiting groove 220 is less than the thickness of the sliding groove 230, so that the connecting seat 121 can be fixed in the limiting groove 220 at the bottom of the sliding groove 230; the length (axial length) of the connecting rod 122 is greater than the thickness (or depth) of the connecting part 200, so that when the safety belt connecting device 100 moves along the axial direction of the connecting rod 122, the connecting seat 121 can smoothly enter or exit the limiting groove 210.

[0515] When it is needed to fix the safety belt connecting device 100 on the connecting part 200, first, the connecting seat 121 is passed through the mounting hole 210 on the connecting part 200, then the safety belt connecting device 100 is pressed down to make the connecting rod 122 freely slide in the sliding groove 230, when the connecting rod 122 slides to the limiting groove 220 in the appropriate position according to the passenger's body type, the safety belt connecting device 100 is released, the tension of the safety belt itself will pull the safety belt connecting device 100 upwardly, so that the connecting seat 121 is abutted in the limiting groove 220 at the bottom of the sliding groove 230, since the size of the connecting seat 121 and the limiting groove 220 is matched and is greater than the width of the sliding groove 230, at this time, under the action of the tension of the safety belt itself, the connecting seat 121 is clamped in the limiting groove 220, the connecting rod 122 cannot slide in the sliding groove 230, thereby playing a role of fixing the safety belt connecting device 100, since the safety belt itself also has the tension, therefore, the connecting seat 121 will not be separated from the limiting groove 220 under the action of gravity, realizing the locking and fixing of the safety belt connecting device 100 and the connecting part 200.

[0516] The first connecting end 110 includes a fixed rod 111 and a movable rod 112 which are detachably connected. As shown in FIG. 68, the two ends of the fixed rod 111 are upwardly protruded and each is provided with a connecting hole, the two ends of the movable rod 112 are downwardly protruded and each is provided with a connecting hole and a mounting slot matched with the two ends of the fixed rod 111, the two ends of the fixed rod 111 are respectively mounted in the mounting slots of the two ends of the movable rod 112, one end of the fixed rod 111 and the movable rod 112 is connected through a rotating pair 113 passing through the connecting holes, and the other end is detachably connected through a fastener 114 passing through the connecting holes, so that one end of the movable rod 112 can rotate around the fixed rod 111, realizing the opening and closing of the first connecting end 110. Specifically, one end of the fixed rod 111 and the movable rod 112 is connected through a screw or a screw rod or a rivet or a hinge and the like movable connecting device, and the other end is detachably connected through a bolt or a pin shaft and the like fastener 114. As a preferred, one end of the movable rod 112 provided with the fastener 114 is provided with a sunken slot, so that the end of the fastener 114 can be hidden in the sunken slot after mounting, without causing interference to the passenger; the connecting hole of one end of the movable rod 112 provided with the fastener 114 is a threaded hole, and the fixed rod 111 and the movable rod 112 are fixed through threaded connection of the fastener 114. When the first connecting end 110 is opened by rotating the movable rod 112, the safety belt is pulled into the fixed rod 111 and the movable rod 112, then the movable rod 112 is rotated and the other end of the fixed rod 111 and the movable rod 112 is tightened through the fastener 114 to close the first connecting end 110, realizing the connection of the safety belt connecting device 100 and the safety belt.

[0517] As a preferred embodiment, as shown in Fig. 68, a gap 115 for the seat belt to pass through is provided between the fixed rod 111 and the movable rod 112, so that the seat belt connecting device 100 can move on the seat belt, which not only facilitates the connection of the seat belt connecting device 100 to the connecting part 200, but also adjusts the seat belt connecting device 100 to a comfortable position for the passenger on the seat belt, further improving the comfort of the passenger.

[0518] The seat belt connecting device 100 of the present application keeps the first connecting end 110 connected to the seat belt in a non-use state, and when the passenger sits on the seat or the safety cushion, the second connecting end 120 of the seat belt connecting device 100 is fixed to the connecting part 200, and the appropriate limiting groove 220 is selected according to the size of the passenger's abdomen and body shape to fix the second connecting end 120, thereby ensuring the comfort of the passenger. After use, the second connecting end 120 is detached from the connecting part 200.

[0519] As a preferred embodiment, as shown in Fig. 68, the seat belt connecting device is provided with an elastic member 123 for keeping it away from the connecting part and clamping the connecting seat in the limiting groove. Preferably, the elastic member 123 is provided around the connecting rod 122 or at the bottom of the fixed rod 111 in the direction of the sliding groove 230, and the thickness of the elastic member 123 is slightly larger than the thickness of the connecting seat 121. Specifically, the elastic member 123 is a spring, spring sheet or sponge, etc. elastic material, which can be sleeved on the connecting rod 122, or can be provided at the bottom of the fixed rod 111 in the direction of the sliding groove 230 by welding, riveting, bolt and screw connection, buckle connection or sticking, etc. When the connecting seat 121 passes through the mounting hole 210 under the action of external force, the elastic member 123 will abut between the connecting part 200 and the fixed rod 111, so as to be compressed. When the external force is removed, the elastic member 123 will restore to its original state, so that the connecting seat 121 is clamped in the corresponding limiting groove 220 under the action of the elastic force, so that the clamping and fixing of the seat belt connecting device 100 is more firm, further improving the safety performance.

[0520] As a preferred embodiment, the connecting part 200 is installed in the middle of the seat or safety cushion between the two legs and / or at the two front corners of the seat or safety cushion. When the passenger is wearing trousers, the safety belt tied according to the prior art standard can be pulled and fixed at the position close to the thigh root in the middle of the seat or safety cushion between the two legs or at the two front corners of the seat or safety cushion by the buckle slot locking safety belt connecting mechanism, so as to transfer the pressure of the safety belt on the passenger's abdomen to the thighs, avoiding the discomfort caused by the contraction of the safety belt pressing the passenger's abdomen when a safety accident or braking occurs. When the passenger is wearing a skirt, it is not convenient to fix the safety belt at the position close to the thigh root in the middle of the seat or safety cushion between the two legs, so the safety belt can be fixed at the position close to the edge of the seat or safety cushion between the two legs or at the two front corners of the seat or safety cushion, so as to transfer the pressure of the safety belt on the passenger's abdomen to the thighs.

[0521] As a preferred embodiment, the safety belt connecting device 100 and the connecting part 200 are made of high-strength metal, alloy, high-strength carbon fiber, high-strength plastic, high-strength nylon, high-strength glass steel, high-strength ceramic or high-molecular material, which can improve the structural strength of the buckle slot locking safety belt connecting mechanism and ensure the safety of the passenger.

[0522] Embodiment 28:

[0523] In this embodiment, except that the first connecting end 110 of the safety belt connecting device 100 is different from that of embodiment 23. As shown in FIG. 71, in this embodiment, the fixed rod 111 is a U-shaped structure with a first space 116 at both ends, and the first space 116 is provided with a connecting hole and a mounting slot at both ends. The movable rod 112 is a U-shaped structure with a second space 117 at both ends, and the second space 117 is provided with a connecting hole. The second space 117 of the movable rod 112 is mounted in the mounting slot at both ends of the fixed rod 111, and the fixed rod 111 and the movable rod 112 are connected by a rotating pair 113 through the connecting hole at one end and connected by a fastener 114 through the connecting hole at the other end, so that the movable rod 112 can rotate around one end of the fixed rod 111, realizing the opening and closing of the first connecting end 110. After the first connecting end 110 is closed, there is a gap 115 between the fixed rod 111 and the movable rod 112 for the safety belt to pass through, so that the safety belt connecting device 100 can move on the safety belt.

[0524] Embodiment 29:

[0525] In this embodiment, except for the first connecting end 110 of the safety belt connecting device 100, other parts are the same as those in Embodiment 23. As shown in FIG. 72, in this embodiment, both ends of the fixed rod 111 and the movable rod 112 are detachably connected by fasteners 114. Specifically, the fixed rod 111 is in U-shaped structure with third protruding portions 118 provided at both ends, the third protruding portions 118 are provided with through holes, and the movable rod 112 is provided with threaded holes at both ends, and the fasteners 114 such as bolts or screws are screwed through the through holes of the third protruding portions 118 and the threaded holes at both ends of the movable rod 112 to achieve the connection and fixation of the fixed rod 111 and the movable rod 112. When it is needed to fix or detach the safety belt connecting device 100 on the safety belt, the fasteners 114 at both ends are removed, which facilitates the fixation and detachment of the safety belt connecting device 100. After the first connecting end 110 is closed, there is a gap 115 between the fixed rod 111 and the movable rod 112 for the safety belt to pass through, so that the safety belt connecting device 100 can move on the safety belt.

[0526] Embodiment 30:

[0527] In this embodiment, except for the first connecting end 110 of the safety belt connecting device 100, other parts are the same as those in Embodiment 23. As shown in FIG. 73, in this embodiment, one end of the fixed rod 111 and the movable rod 112 is rotatably connected by a revolute pair 113, and the other end is provided with a matching external thread and detachably connected by a threaded fastener 114. One side of the fixed rod 111 and the movable rod 112 in contact with each other is provided with a groove, so that after the first connecting end 110 is closed, there is a gap 115 between the fixed rod 111 and the movable rod 112 for the safety belt to pass through, so that the safety belt connecting device 100 can move on the safety belt.

[0528] Embodiment 31:

[0529] As shown in FIGS. 74 to 81, the safety belt connecting mechanism provided in this embodiment is installed on a seat or a safety cushion, a safety belt is provided on the seat or the safety cushion, and the safety belt connecting mechanism comprises:

[0530] A safety belt connecting device 100, comprising a connecting end 110 installed on the safety belt and a plug-in end 120 capable of being connected to the seat or the safety cushion in plug-in connection, the plug-in end 120 is provided with a lock hole 121;

[0531] A connecting part 200 installed on the seat or the safety cushion, the connecting part 200 is provided with a plurality of plug-in holes 210 capable of being detachably connected to the plug-in end 120, and each plug-in hole 210 is provided with a locking member for locking the plug-in member.

[0532] The application is characterized in that the connecting part 200 is arranged on the seat or safety cushion of the vehicle or amusement facility, and the safety belt connecting device 100 arranged on the safety belt is connected to the connecting part 200, and after the safety belt is buckled according to the prior art specification, the safety belt located at the abdomen is pulled and fixed on the connecting part 200 by the safety belt connecting device 100, and when a safety accident or braking occurs, the contraction force of the safety belt will act on the thighs of the passenger, which can avoid the discomfort caused by the compression of the abdomen of the passenger when the safety belt contracts. By arranging a plurality of plug-in holes 210 and locking members on the connecting part 200, the plug-in end 120 can be connected to the plug-in hole 210 at the appropriate position according to the body type of the passenger, and the plug-in end 120 is fixed by locking through the locking member, which can be suitable for passengers of different body types, improve the comfort of use, and can bind the safety belt as close as possible to the position of the root of the passenger's thigh, and as much as possible to reduce the displacement of the passenger when braking or in an accident, so that the safety belt generates binding force in time, and the safety airbag can be triggered in time to open in a serious accident, and the safety performance is improved.

[0533] As shown in FIG. 76, the locking member includes a gear 220 and a rack 230 arranged in engagement inside the connecting part 200, and a plurality of locking pins 240 connected to the rack 230, the number of locking pins 240 is the same as the number of plug-in holes 210 and can be inserted into the lock hole 121. By arranging a plurality of plug-in holes 210 on the connecting part 200, the plug-in end 120 can be connected and fixed according to the body type of the passenger by selecting the appropriate position of the plug-in hole 210, so that the connection position of the safety belt connecting device 100 and the connecting part 200 can be adjusted, and therefore the gear locking type safety belt connecting mechanism of the application can be suitable for passengers of different body types, and improve the comfort of use; by arranging the engaging gear 220 and rack 230 inside the connecting part 200, by rotating the gear 220, the gear 220 will drive the rack 230 to move left and right, and then drive the locking pin 240 connected to the rack 230 to move, so that the locking pin 240 can be inserted into the lock hole 121 on the plug-in end 120, and the plug-in end 120 plugged into the plug-in hole 210 is locked, and then the safety belt connecting device 100 is fixed on the connecting part 200, which not only realizes the stable connection of the safety belt connecting device 100 and the connecting part 200 on the seat or safety cushion, but also is simple to operate and convenient to disassemble.

[0534] In the present application, the installation height of the locking pin 240 inside the connecting portion 200 is the same as the height of the locking hole 121 on the plug-in end 120 plugged into the plug-in hole 210, and the size of the locking hole 121 is larger (1-5 mm larger) than the cross-sectional size of the locking pin 240, so that when the rotating gear 220 and the rack 230 drive the locking pin 240 to move, the locking pin 240 can be easily inserted into the locking hole 121 to fix the plug-in end 120 plugged into the plug-in hole 210, and the safety belt connecting device 100 is fixedly connected to the connecting portion 200.

[0535] The movement direction of the rack 230 is parallel to the axis direction of the locking hole 121 on the plug-in end 120 plugged into the plug-in hole 210. As shown in FIGS. 75 and 76, the axis direction of the locking hole 121 on the plug-in end 120 plugged into the plug-in hole 210 is perpendicular to the direction of the plug-in hole 210, and the direction of the plug-in hole 210 is parallel to the left and right side walls of the connecting portion 200 in FIG. 2. When the rotating gear 220 rotates, the movement direction of the rack 230 is perpendicular to the left and right side walls of the connecting portion 200, and the gear 220 drives the rack 230 to move in the left and right directions, so that the locking pin 240 also moves in the left and right directions, and the locking pin 240 can be inserted into the locking hole 121 during the movement.

[0536] In some embodiments, one end of the rack 230 is engaged with the gear 220, and the other end is fixed with a connecting rod 242 connecting all the locking pins 240. As shown in FIGS. 3 and 5, the number of locking pins 240 in the present application is the same as the number of plug-in holes 210, and the installation positions of the locking pins 240 correspond to the plug-in holes 210, so that when the plug-in end 120 is plugged into the plug-in hole 210, the locking pin 240 can be inserted into the locking hole 121 to fix the safety belt connecting device 100.

[0537] As shown in FIG. 76, in some embodiments, the connecting portion 200 is provided with a plurality of locking pins 240 connected by the connecting rod 242 fixed to the end of the rack 230, so that when the gear 220 drives the rack 230 to move left and right, the rack 230 can drive the plurality of locking pins 240 to move simultaneously through the connecting rod 242. Therefore, no matter which position of the plug-in end 120 of the safety belt connecting device 100 is plugged into the plug-in hole 210 of the connecting portion 200, the locking pin 240 at the corresponding position can be inserted into the locking hole 121 to fix the plug-in end 120. Therefore, the present application can drive the plurality of locking pins 240 to move through only one set of gear 220 and rack 230 engagement, which not only saves the installation space and reduces the volume of the connecting portion 200, but also greatly reduces the production cost.

[0538] In some embodiments, as shown in FIG. 76 and FIG. 77, the middle part of the locking pin 240 is provided with a mounting hole 241, the connecting rod 242 is mounted in the mounting hole 241, one end of the locking pin 240 can be inserted into the locking hole 121 to fix the safety belt connecting device 100 with the movement of the rack 230, and the other end of the locking pin 240 is connected to the inner wall of the connecting part 200 through the spring 250. One end of the spring 250 is mounted on the end of the locking pin 240, and the other end is fixed on the right side wall of the connecting part 200. The locking pin 240 is kept in the locking position in FIG. 4 by the elastic force of the spring 250, which improves the reliability of the locking of the safety belt connecting device 100.

[0539] In some embodiments, as shown in FIG. 77, the length of the mounting hole 241 in the movement direction of the locking pin 240 is greater than the diameter of the connecting rod 242 (such as a 2-3 times relationship), so that the connecting rod 242 can move within a predetermined range relative to the locking pin 240. When the rack 230 carries the connecting rod 242 to move to the position in FIG. 4 (the connecting rod 242 moves to the rightmost end of the mounting hole 241) by the wobble gear 220, the locking pin 240 can enter the insertion hole 210 under the elastic force of the spring 250 to lock the insertion end 120 located in the insertion hole 210. At this time, the gear 220 can be further rotated to move the connecting rod 242 to the leftmost end of the mounting hole 241. At this time, the position of the locking pin 240 is double-locked by the connecting rod 242 and the spring 250. Even if the connecting rod 242 moves a small distance to the right due to the accidental wobble of the gear 220 under external force, the locking pin 240 will not be separated from the locking hole 121 due to the elastic force of the spring 250, which plays a double insurance role.

[0540] In some embodiments, as shown in FIG. 76 and FIG. 78, the gear 220 is connected with a gear shaft 260, one end of the gear shaft 260 is fixedly connected with the gear 220, the other end of the gear shaft 260 penetrates through the front wall of the connecting part 200, and a rotating handle 261 is mounted on the other end of the gear shaft 260. As shown in FIG. 76 and FIG. 80, the end of the gear shaft 260 connected with the rotating handle 261 is provided with a threaded hole 262, and the front wall of the connecting part 200 is provided with a through hole with a diameter greater than the diameter of the gear shaft 260. After the gear shaft 260 penetrates through the through hole of the front wall of the connecting part 200, the rotating handle 261 is threadedly connected to the threaded hole 262 of the gear shaft 260 through bolts or other connecting members. By providing the rotating handle 261 on the end of the gear shaft 260 extending out of the connecting part 200, the passenger can rotate the rotating handle 261 to rotate the gear 220, thereby moving the rack 230 and the locking pin 240, and achieving the fixing and dismounting of the safety belt connecting device 100, which can facilitate the operation of the passenger.

[0541] Specifically, when the safety belt connecting device 100 needs to be fixed on the connecting part 200, first, the plug-in end 120 is inserted into the plug-in hole 210 at a proper position according to the body type of the passenger, and then the rotating handle 261 is rotated to make the gear 220 rotate clockwise, which drives the rack 230 to move leftward, and then drives all the locking pins 240 to stretch the spring 250 and move leftward through the connecting rod 242. With the rotation of the gear 220, the locking pin 240 corresponding to the position of the lock hole 121 is inserted into the lock hole 121, realizing the connection and fixation of the safety belt connecting device 100 and the connecting part 200. When the safety belt connecting device 100 needs to be detached from the connecting part 200, the rotating handle 261 is counterclockwise rotated to make the gear 220 rotate, which drives the rack 230 to move rightward, and then drives all the locking pins 240 to compress the spring 250 and move rightward through the connecting rod 242. With the rotation of the gear 220, the locking pin 240 is extracted from the lock hole 121, and then the plug-in end 120 is taken out of the plug-in hole 210, so that the safety belt connecting device 100 can be detached from the connecting part 200.

[0542] In some embodiments, as shown in FIGS. 77 and 78, the connecting part 200 is spliced by an upper connecting part 270 and a lower connecting part 280, and the locking device such as the locking pin 240 and the rack 230 is installed at the spliced part of the upper connecting part 270 and the lower connecting part 280. By setting the connecting part 200 as a spliced structure of upper and lower parts, the spliced part of the upper connecting part 270 and the lower connecting part 280 can provide sufficient space for the installation of the rack 230 and the locking pin 240, and also facilitate the installation and operation of the rack 230, the locking pin 240 and the spring 250.

[0543] In some embodiments, as shown in FIG. 74, the plug-in end 120 can be a rectangular plug-in sheet, and the plug-in sheet is provided with a lock hole 121, which can be circular or oval, triangular or other special-shaped. The connecting end 110 includes a fixed part 111 and a movable part 112, and the fixed part 111 is integrally made with the plug-in end 120. The fixed part 111 and the movable part 112 can be strip-shaped structural parts, and the setting direction of the fixed part 111 is perpendicular to the plug-in end 120. The fixed part 111 is provided with an ear plate 113 protruding away from the plug-in end 120 at both ends. The movable part 112 is fixed on the ear plate 113 through a transverse fastener 114. By setting the ear plate 113, a gap 116 for the free passage of the safety belt is generated between the movable part 112 and the fixed part 111, so that the safety belt connecting device 100 can be freely and slidably installed on the safety belt. When the safety belt connecting device 100 needs to be fixed on the safety belt or detached from the safety belt, the fastener 114 at both ends is removed to detach the fixed part 111 and the movable part 112, facilitating the fixation and detachment of the safety belt connecting device 100.

[0544] As a preferred, as shown in Figure 74, the connection end 110 and the plug end 120 are provided with a gap 116 through which the safety belt can pass, so that the safety belt connecting device 100 can move on the safety belt, not only facilitating the connection of the safety belt connecting device 100 on the connection part 200, but also adjusting the safety belt connecting device 100 to a comfortable position of the passenger on the safety belt, further improving the comfort of the passenger.

[0545] The safety belt connecting device 100 of the present application is connected with the safety belt in the non-use state, and when the passenger sits on the seat or the safety cushion, the plug end 120 of the safety belt connecting device 100 is fixed on the connection part 200, and the appropriate position of the plug hole 210 is selected according to the size of the passenger's abdomen and body shape, thereby ensuring the comfort of the passenger. After use, the plug end 120 is detached from the connection part 200.

[0546] As a preferred embodiment, the connection end 110, the plug end 120, the lock hole 121, the gap 116 and the fastener 114 of the safety belt connecting device 100, and the gear 220, the rack 230, the locking pin 240, the connecting rod 242, the spring 250, the gear shaft 260, the rotating handle 261, the upper connecting part 270 and the lower connecting part 280 of the connection part 200 are made of high-strength metal, alloy, high-strength carbon fiber, high-strength plastic, high-strength nylon, high-strength glass steel, high-strength ceramic or high-molecular material, which can improve the structural strength of the gear locking type safety belt connecting mechanism of the present application and ensure the safety of the passenger.

[0547] As a preferred embodiment, the connection part 200 is installed at the position between the two legs of the seat or safety cushion and / or at the two front corners of the seat or safety cushion. When the passenger wears trousers, the safety belt tied according to the existing technical specification can be pulled and fixed by the gear locking type safety belt connecting mechanism at the position between the two legs of the seat or safety cushion near the thigh root or at the two front corners of the seat or safety cushion, so as to transfer the pressure of the safety belt on the passenger's abdomen to the thighs, avoiding the discomfort caused by the contraction of the safety belt pressing the passenger's abdomen when a safety accident or braking occurs. When the passenger wears a skirt, it is not convenient to fix the safety belt at the position between the two legs of the seat or safety cushion near the thigh root, so the safety belt can be fixed at the position between the two legs of the seat or safety cushion near the edge of the cushion or at the two front corners of the seat or safety cushion, so as to transfer the pressure of the safety belt on the passenger's abdomen to the thighs.

[0548] Embodiment 32:

[0549] As shown in FIG. 82, the locking member is a plurality of safety buckle female buckles 290 arranged in the connecting part 200, and the insertion end 120 can be inserted into the connecting part 200 and matched with the safety buckle female buckles 290 to form a lock. The safety buckle female buckles 290 are fixed in the cavity of the connecting part 200 by welding, rivet connection or bolt screw, etc. In use, the safety buckle female buckles 290 at the appropriate position can be selected according to the size and body shape of the passenger to connect the safety belt to the position as close to the passenger's thigh root as possible, so as to reduce the displacement of the passenger when braking or in an accident, so that the safety belt can generate a binding force in time, and the safety airbag can be triggered in time to open in a serious accident, thereby improving the safety of the safety cushion and the comfort and convenience of the passenger.

[0550] Embodiment 33:

[0551] As shown in FIGS. 83-85, the safety structure for a seat provided in the embodiment includes a safety belt, and the safety structure includes:

[0552] The cushion base plate 100 is a plate-shaped structure arranged on the seat for bearing weight, and the front end of the cushion base plate 100 located between the two legs is integrally formed with a U-shaped connecting part 110, which includes a horizontal bottom surface 111, a U-shaped inner side surface 113 and a U-shaped outer side surface 114. The U-shaped connecting part 110 is integrally stamped and formed with the cushion base plate 100 on both sides thereof, the U-shaped inner side surface 113 is connected with the top surface 112 and the horizontal bottom surface 111 on both sides thereof respectively, and the horizontal bottom surface 111 is connected with the U-shaped inner side surface 113 to jointly form a U-shaped space. The horizontal bottom surface 111 is located higher than the cushion base plate 100 on both sides of the U-shaped connecting part 110, so that a hollow structure is formed below the U-shaped connecting part 110.

[0553] The safety belt connecting device 200 includes a first connecting end 210 for connecting with the safety belt and a second connecting end 220 connectable with the U-shaped connecting part 110 in the U-shaped space.

[0554] The cushion base plate 100 is wrapped to form a cushion.

[0555] The anti-collision protection pad 400 is arranged on the cushion base plate 100 on the side of the U-shaped connecting part 110 close to the user, and is used to constrain the safety belt to form a surface contact with the user's thigh root and lower abdomen, so as to prevent the safety belt from cutting the user.

[0556] The safety structure for seat of the present application can be installed on the seat or cushion of the vehicle, transport or amusement facility and protect the safety of pregnant women and children, or can be integrally manufactured and processed with the seat of the vehicle, transport or amusement facility. By setting the cushion base plate 100 as a plate structure, the structural strength of the safety cushion of the present application can be improved to cope with sudden high impact force, and better protection can be provided to the passenger; the present application sets the U-shaped connecting part 110 integrally formed with the cushion base plate 100 at the position between the two legs on the cushion base plate 100, and the safety belt connecting device 200 installed on the safety belt is detachably connected with the connecting part, after the safety belt is buckled according to the existing technical specification, the safety belt located at the passenger's abdomen is pulled and fixed between the passenger's thighs by the safety belt connecting device 200, when a safety accident or braking occurs, the contraction force of the safety belt will act on the passenger's thighs, which can avoid the discomfort caused by the contraction of the safety belt pressing the passenger's abdomen; the U-shaped connecting part 110 can hide the safety belt connecting device 200 in the U-shaped space while fixing the safety belt connecting device 200, and bury it in the middle position of the cushion main body, to prevent the safety belt connecting device 200 from causing secondary injury to the passenger; compared with the safety belt connecting device 200 protection cover installed on the cushion base plate 100, the design of the present application that the U-shaped connecting part 110 is integrally formed with the cushion base plate 100 can not only ensure the structural strength of the safety cushion, but also reduce the thickness and production cost of the safety cushion; by setting the lower part of the U-shaped connecting part 110 as a hollow structure, sufficient space can be provided for the installation and operation of the safety belt connecting device 200 without increasing the thickness of the safety cushion; by laying the buffer layer 300, not only can the protection cover prevent the passenger from being injured, but also can improve the comfort of riding; by adjusting the safety belt connected between the thighs with the anti-collision protection pad 400, the middle part of the safety belt forms a surface contact with the user's thigh root and lower abdomen, which can not only improve the comfort of the user, but also can avoid the safety belt side edge cutting the user. Therefore, the present application is not only easy to operate and structurally stable, but also ensures safety and reliability while taking into account comfort.

[0557] As shown in FIGS. 83-85, the anti-collision protection pad 400 is arranged on the cushion base plate 100 at the side of the U-shaped connecting part 110 close to the user, and is a cut-resistant layer made of elastic materials such as high-density fabric layer, silica gel, rubber, and sponge. Generally, it is a flexible pad layer. When in use, it is manually placed between the safety belt and the human body. While playing a role of isolation and buffering, it can also change the contact posture of the safety belt and the human body, and change the linear contact between the safety belt and the abdomen of the human body into surface contact, thereby greatly improving the safety. When the user sits on the seat, the abdomen and the thighs of the human body are in a vertical state with a small bending angle. The applicant found in the research and test that, as shown in FIG. 4, when the safety belt is connected to the U-shaped connecting part 110, the safety belt that restrains the root of the thigh is in surface contact with the thigh, but the safety belt is in side edge contact with the abdomen of the human body. When a larger impact force is encountered, although the safety belt has good restraint on the thigh at this time, the side edge of the safety belt can cause or cause injuries to the abdomen of the human body. Not only is the comfort poor, but also there is a safety hazard. As shown in FIGS. 5 and 6, the anti-collision protection pad 400 is arranged according to the application, and the cut-resistant layer made of elastic materials such as high-density fabric layer, silica gel, rubber, and sponge is used to fill the angle at the groin of the user's abdomen, change the posture of the safety belt, and make the middle part of the safety belt form surface contact with the root of the thigh and the bottom of the abdomen of the user. The side edge of the safety belt no longer directly contacts the user. When a traffic accident or braking occurs, the pulling force of the safety belt is transferred to the anti-collision protection pad 400, which protects the user through the anti-collision protection pad 400, prevents the safety belt from cutting or impacting the user, and improves the comfort of the user.

[0558] It should be noted that, considering the working principle of the anti-collision protection pad 400 of the application, the anti-collision protection pad 400 of the application can be a pad layer with a buffering function, and is not subjected to tension but only pressure. Therefore, the specific position and form can be relatively arbitrary, and the anti-collision protection pad 400 can be fixed on the cushion base plate 100, fixed on an external cladding layer, movably arranged, or directly wrapped on the safety belt. When in use, the anti-collision protection pad 400 can be slid to the restraint area of the root of the thigh. As shown in FIG. 5, the anti-collision protection pad 500 is in the shape of two long strips and is arranged between the safety belt and the root of the thigh. As shown in FIG. 6, the anti-collision protection pad 500 is approximately triangular and covers the entire abdomen of the user, and can restrain the safety belt at the root of the thigh to prevent the safety belt from cutting or pressing the abdomen of the user.

[0559] As shown in FIG. 84 and FIG. 86, the U-shaped connecting part 110 is formed in the middle of the seat cushion substrate 100 by stamping forming, and the structure of the U-shaped connecting part 110 can be obtained by stamping. It can also be processed by integrated forming process such as casting, forging, 3D printing, machining, injection molding, selective laser melting, selective laser sintering, metal deposition, blow molding, injection molding, calendering, suction molding, die forming, lamination, thermoforming, vacuum forming, rotational molding, RTM (resin transfer molding) molding, autoclave (AC) molding, oven molding, extrusion molding, die forming, molding, pultrusion molding, filament winding molding, injection molding and contact molding process. The position of the horizontal bottom surface 111 is higher (0.8-12 cm higher) than the seat cushion substrate 100 on both sides of the U-shaped outer side surface 114, so that a hollow structure is formed below the U-shaped connecting part 110, providing sufficient space for the installation and operation of the safety belt connecting device 200. The depth of the U-shaped inner side surface 113 is greater than or slightly greater (0.2-0.5 cm greater) than the height of the safety belt connecting device 200, so that the U-shaped inner side surface 113 and the U-shaped outer side surface 114 can completely cover the safety belt connecting device 200 installed on the U-shaped connecting part 110, avoiding secondary injury such as impact on the passenger's thigh root caused by the safety belt connecting device 200. The U-shaped inner side surface 113 and the U-shaped outer side surface 114 are both three-slope gradually convex shapes. Specifically, the bottom of the U-shaped inner side surface 113 is integrally formed with the horizontal bottom surface 111, and the top is inclined to the direction of the U-shaped outer side surface 114, so that the included angle a between the U-shaped inner side surface 113 and the horizontal bottom surface 111 is 95°-110°. The bottom of the U-shaped outer side surface 114 is integrally formed with the seat cushion substrate 100, and the top is inclined to the direction of the U-shaped inner side surface 113, so that the included angle β between the U-shaped outer side surface 114 and the seat cushion substrate 100 is 100°-120°. The present application sets the U-shaped inner side surface 113 and the U-shaped outer side surface 114 as a slope, which can improve the stability of the seat cushion substrate 100 and provide high-strength stable support for passengers, and on the other hand, it can release and relieve the impact pressure of the U-shaped connecting part 110, avoid direct impact between passengers and the U-shaped connecting part 110 when the vehicle, transport or amusement facility collides, protect the safety of passengers, and at the same time, it can also increase the installation and operation space of the safety belt connecting device 200, facilitate the installation and disassembly of the safety belt connecting device 200.

[0560] Experimental verification shows that by selecting the angle range of the inner U-shaped side 113 and the outer U-shaped side 114, the strength of the U-shaped connecting part 110 of the present invention is increased by about 10%-20% with the same amount of material. By setting the included angle β of the outer U-shaped side 114 to 100°-120°, a portion of the frontal impact force can be dissipated by sliding upwards, reducing the impact force by about 20-30%, effectively protecting passenger safety. The connection between the top surface 112 and the inner U-shaped side 113 and the outer U-shaped side 114 is set as a smooth rounded corner connection, which can further release and alleviate the impact pressure of the U-shaped connecting part 110 and avoid collisions with passengers.

[0561] As shown in Figure 84, the seat cushion base plate 100 has an upward-facing protrusion 120 located on the outer sides of the legs. A retainer 130 is installed below the protrusion 120, with its two ends fixed to the bottom of the seat cushion base plate 100 and the end of the protrusion 120, respectively. A hollow mounting groove 140 is formed below the protrusion. This invention, by providing a U-shaped connecting portion 110 with a hollow bottom and a protrusion 120 on the seat cushion base plate 100, provides space for the connection and fixation of the seat belt connecting device 200 and the installation of the seat cushion fixing strap. Furthermore, it creates a hollow structure without increasing the thickness of the safety seat, reducing the space occupied by the safety seat and significantly reducing the weight of the seat cushion base plate 100. This lightweight design ensures structural strength while making it easy to carry.

[0562] The mounting groove 140 is provided with a length-adjustable connecting assembly which can be connected with the ISOFIX interface of the child safety seat fixing system from the rear of the cushion base plate. Specifically, the connecting assembly is a cushion fixing belt or an ISOFIX hard interface connecting piece of the child safety seat fixing system. One end of the cushion fixing belt is provided with a hook which can be detachably connected with the ISOFIX interface of the child safety seat fixing system. One end of the ISOFIX hard interface connecting piece of the child safety seat fixing system is provided with a buckle which can be detachably connected with the ISOFIX interface of the child safety seat fixing system. By setting the connecting assembly as the cushion fixing belt or the ISOFIX hard interface connecting piece of the child safety seat fixing system, the safety structure of the application can be connected with the ISOFIX interface of the child safety seat fixing system on the rear seat cushion according to the use specifications of different countries, so that the user whose abdomen cannot be pressed can sit in the rear row, thereby providing better safety protection. In addition, the length of the connecting assembly can be adjusted, so that the safety structure of the application can be applied to seats of different sizes. When the connecting assembly is set as the cushion fixing belt, the hook on the cushion fixing belt can be connected with the fixing belt provided with the buckle, the fixing belt is bound on the backrest of the front seat, and the buckle is fixed, thereby fixing the safety structure on the front seat, thereby providing protection for the user driving or sitting in the front row. As a preferred embodiment, the sleeve 130 is made of engineering plastic, which can provide sufficient support strength and reduce the weight of the safety cushion, thereby meeting the lightweight design.

[0563] In some embodiments, as shown in FIG. 88, the first connecting end 210 of the safety belt connecting device 200 includes a fixed rod 211 and a movable rod 212, one end of which is connected through a rotating pair 213, and the other end is detachably connected through a fastener 214. The fixed rod 211 and the movable rod 212 are provided with a gap 215 through which the safety belt passes, so that the movable rod 212 can rotate around one end of the fixed rod 211, realizing the opening and closing of the first connecting end 210, thereby being installed on the safety belt.

[0564] The second connecting end 220 of the safety belt connecting device 200 includes a connecting seat 221 and a connecting rod 222 fixed on the connecting seat 221 and the first connecting end 210 at both ends. The horizontal bottom surface 111 of the U-shaped connecting part 110 is provided with one mounting hole 1111 and a plurality of limiting members communicated by a sliding groove 1112. The connecting seat 221 can pass through the mounting hole 1111, and the connecting rod 222 can freely slide in the sliding groove 1112, and when it is slid to the appropriate position, the connecting seat 221 is clamped and fixed by the limiting members.

[0565] In the embodiment, the second connecting end 220 is fixed to the U-shaped connecting part 110 by rotating connection, as shown in FIG. 87 and FIG. 88. The connecting rod 222 is a cylindrical rod with two opposite planes cut into flat surfaces, the connecting seat 221 is a disc with a diameter larger than the diameter of the arc surface of the connecting rod 222, and the limiting part is a plurality of limiting holes 1113 distributed on the horizontal bottom surface. The width of the sliding groove 1112 is greater than the distance between the two flat surfaces of the connecting rod 222 and less than the diameter of the arc surface, and the size of the limiting hole 1113 is greater than the diameter of the arc surface of the connecting rod 222 and less than the diameter of the connecting seat 221, so that the connecting rod 222 can freely slide in the sliding groove 1112 in the direction of the two flat surfaces, and under the action of external force, the connecting rod 222 is rotated to the width of the arc surface and is clamped in the limiting hole 1113.

[0566] Specifically, the diameter of the mounting hole 1111 is greater than or slightly greater (0.5-3mm) than the diameter of the connecting seat 221; the diameter of the limiting hole 1113 is slightly greater (0.5-3mm) than the diameter of the arc surface of the connecting rod 222, and the diameter of the limiting hole 1113 is less than the diameter of the connecting seat 221; the thickness of the flat rod part formed by cutting the connecting rod 222 is slightly less (0.5-2mm) than the width of the sliding groove 1112, and the diameter of the arc surface of the connecting rod 222 is greater than the width of the sliding groove 1112, so that the width of the sliding groove 1112 is adapted to the distance between the two flat surfaces of the connecting rod 222. When it is necessary to fix the safety belt connecting device 200 on the U-shaped connecting part 110, first, the connecting seat 221 is inserted through the mounting hole on the horizontal bottom surface 111, and then the second connecting end 220 is rotated so that the two flat surfaces of the connecting rod 222 are opposite to the two sides of the sliding groove 1112. At this time, the connecting rod 222 can slide back and forth in the sliding groove 1112. When the connecting rod 222 is slid to the appropriate limiting hole 1113, the second connecting end 220 is rotated so that the two arc surfaces of the connecting rod 222 are opposite to the two sides of the sliding groove 1112. At this time, since the diameter of the arc surface of the connecting rod 222 is greater than the width of the sliding groove 1112, the connecting rod 222 cannot slide in the sliding groove 1112, and the connecting rod 222 is fixed in the limiting hole 1113, thereby playing a role of fixing the safety belt connecting device 200.

[0567] The safety belt connecting device 200 of the application is connected with the safety belt on the seat in the non-use state, and when the user sits on the safety structure, the second connecting end 220 of the safety belt connecting device 200 is fixed on the U-shaped connecting part 110, and the connecting rod 222 is fixed in the limiting hole 1113 at the appropriate position according to the size of the user's abdomen and body shape, so that the connection position of the second connecting end 220 and the U-shaped connecting part 110 can be adjusted. The installation position of the safety belt connecting device 200 can be adjusted according to the size of the user's abdomen and body shape, so that the safety belt on the vehicle or amusement facility is bound as close as possible to the position of the user's thigh root, and the displacement of the user when braking or in an accident is reduced as much as possible. The safety belt generates a binding force in time, and the safety airbag can be triggered in time in the event of a serious accident, thereby improving the safety of the safety structure of the application and the comfort of the user when using the safety structure. After use, the second connecting end 220 is detached from the U-shaped connecting part 110.

[0568] As a preferred embodiment, the buffer layer 300 is made of sponge, rubber pad, sponge pad, silica gel pad or other buffer materials, which can improve the comfort of the passengers and further bury the safety belt connecting device 200 to avoid secondary injury caused by the protective cover to the passengers.

[0569] As a preferred embodiment, as shown in FIG. 83, the seat cushion substrate 100 is provided with a plurality of through holes 150 in the middle, so that the seat cushion substrate 100 forms a hollow structure, which can greatly reduce the weight of the seat cushion substrate 100 while ensuring the structural strength of the seat cushion substrate 100, realize lightweight design, and make the safety seat cushion of the application easy to carry and use.

[0570] As a preferred embodiment, the height adjusting pad is installed below the seat cushion substrate through the connecting piece, and the connecting piece is a connecting hole, a connecting slot or a connecting block provided on the seat cushion substrate. As shown in FIG. 83, a plurality of connecting holes 160 are provided on the seat cushion substrate 100, and the height adjusting pad can be installed below the seat cushion substrate 100 through the connecting holes 160. The safety structure of the application can select whether to install the height adjusting pad according to the height of different users, and select the height adjusting pad with appropriate thickness, so that adults and children with different heights can use the safety structure of the application.

[0571] As a preferred embodiment, the cushion base plate 100 is made of high-strength metal, alloy, high-strength carbon fiber, high-strength plastic, high-strength nylon, high-strength glass steel, high-strength ceramic or high-molecular material, etc. Through the high-strength cushion base plate 100, the safety cushion of the present application can resist the impact force caused by traffic accidents or braking, and provide stable safety protection for passengers whose abdomen cannot be pressed.

[0572] As a preferred embodiment, the buffer layer 400 is further provided with a wrapping layer (not shown in the figure), which is made of flexible materials such as cloth and the like, further improving the comfort of the user.

[0573] Embodiment 34:

[0574] As shown in FIGS. 89-91, the safety structure for preventing abdominal compression provided by the present application is arranged on a seat, the seat comprising a safety belt 600, the safety structure comprising:

[0575] The base plate 100 is a plate-shaped structure arranged on the seat for bearing weight, the front end of the base plate 100 is provided with a receiving space 110 at the position between the two legs, the top of the receiving space 110 is provided with a sunken groove 120, and the bottom of the sunken groove 120 is provided with a first connecting hole 121 penetrating through the base plate 100;

[0576] The safety belt connecting mechanism comprises a first fixing belt 410 arranged in the receiving space 110, a fixing belt adjuster 200 for adjusting the length of the first fixing belt 410, and a safety belt connecting piece 300 arranged in the sunken groove 120, the first fixing belt 410 is connected with a second fixing belt 420 capable of being fixedly connected with the safety belt connecting piece 300 through the first connecting hole 121, and the safety belt connecting piece 300 is capable of being detachably connected with the safety belt 600; and

[0577] The anti-collision protection pad 500 is arranged on the base plate 100 at the side close to the user of the receiving space 110, and is used for restraining the safety belt 600 to form surface contact with the user's thigh root and lower abdomen, preventing the safety belt 600 from cutting the user.

[0578] The sunken groove 120 is arranged at intervals along the front-rear direction of the base plate 100 at the top of the receiving space 110, the bottom of each sunken groove 120 is provided with a first connecting hole 121, and each sunken groove 120 is provided with one safety belt connecting piece 300 and one second fixing belt 420, and the safety belt 600 is connected by selecting the safety belt connecting piece 300 in different sunken grooves 120 to adapt to users of different body types.

[0579] The safety structure for preventing abdominal compression of the application can be installed on the seat or cushion of a vehicle, a transport tool or an amusement facility, or can be integrally manufactured with the seat or cushion for protecting pregnant women and children in the vehicle, the transport tool or the amusement facility. By setting the base plate 100 as a plate structure, the structural strength of the safety structure of the application can be improved to cope with sudden high impact force, and better protection can be provided to passengers; the storage space 110 is arranged at the position between the two legs at the front end of the base plate 100, the safety belt connector 300 installed on the first fixing belt 410 can be connected with the safety belt 600, after the safety belt 600 is buckled according to the existing technical specification, the safety belt connector 300 arranged in the sunken groove 120 can be connected with the safety belt 600, the safety belt 600 located at the abdomen of the passenger is pulled and fixed between the thighs of the passenger, when a safety accident or braking occurs, the contraction force of the safety belt 600 will act on the thighs of the passenger, which can avoid the discomfort caused by the compression of the abdomen of the passenger when the safety belt 600 contracts; by arranging the safety belt connector 300 in the sunken groove 120, the safety belt connector 300 can be connected with the safety belt 600 according to the size of the abdomen and the body shape of different passengers, which not only can improve the comfort of the passengers, but also can bind the safety belt 600 as close as possible to the position of the root of the thigh of the passenger, reduce the displacement of the passenger when braking or in an accident, and timely trigger the airbag to open when a serious accident occurs, to protect the safety of people who cannot be pressed on the abdomen such as pregnant women or people who have had abdominal surgery, so as to improve the safety of the safety structure of the application; by burying the safety belt connector 300 in the storage space 110, the safety belt connector 300 can prevent the secondary injury such as impact on the root of the thigh of the passenger when braking or in a traffic accident, further ensuring the safety; by hiding the safety belt connector 300 in the sunken groove 120, the safety belt connector 300 can prevent the secondary injury to the passenger; by adjusting the length of the first fixing belt 410 through the fixing belt adjuster 200, the connection and disconnection of the safety belt connector 300 and the safety belt 600 can be facilitated, the safety belt connector 300 can be tightened to hide in the sunken groove 120, the safety performance can be improved, and the tightness of the safety belt connecting mechanism can be adjusted according to the size of the abdomen and the body shape of different passengers, so as to improve the comfort of the safety structure of the application; by adjusting the safety belt 600 connected between the thighs through the anti-collision protection pad 500, the middle part of the safety belt 600 forms a surface contact with the root of the thigh and the bottom of the abdomen of the user, which not only can improve the comfort of the user, but also can avoid the user being cut by the side edge of the safety belt 600.

[0580] As shown in FIG. 90, the size of the sink 120 is greater than the size of the seat belt connector 300, the size of the first connecting hole 121 is greater than the size of the second fixing belt 420 and less than the size of the seat belt connector 300. The seat belt connector 300 can be hidden in the sink 120, and the second fixing belt 420 can be fixedly connected with the seat belt connector 300 through the corresponding first connecting hole 121. The seat belt connector 300 can be a male-female buckle structure in the prior art, and the specific implementation form is not limited as long as the second fixing belt 420 and the seat belt 600 can be connected.

[0581] As shown in FIG. 89 and FIG. 90, the anti-collision protection pad 500 is arranged on the substrate 100 and located on the side of the accommodation space 110 close to the user. The bottom of the anti-collision protection pad 500 is a cutting-resistant layer made of elastic materials such as high-density fabric layer, silica gel, rubber and sponge. Generally, it is a flexible pad layer. When used, it is manually placed between the seat belt 600 and the human body. While playing a role of isolation and buffering, it can also change the contact posture of the seat belt 600 and the human body, change the linear contact state between the seat belt 600 and the abdomen of the human body into a surface contact, and greatly improve the safety. When the user sits on the seat, the abdomen and the thigh of the human body are in a vertical state, and have a small bending angle. The applicant found in the research and test that when the seat belt 600 is connected to the seat belt connector 300 as shown in FIG. 4, the seat belt 600 that restrains the root of the thigh is in surface contact with the thigh, but the seat belt 600 is in side edge contact with the abdomen of the human body. When a larger impact force is encountered, although the seat belt 600 has good restraint on the thigh at this time, the side edge of the seat belt 600 will cause or cause injury to the abdomen of the human body. Not only is the comfort poor, but also there is a safety hazard. As shown in FIG. 5 and FIG. 6, the present application sets the anti-collision protection pad 500, uses the cutting-resistant layer made of elastic materials such as high-density fabric layer, silica gel, rubber and sponge, and fills the angle at the groin of the user's abdomen. Change the posture of the seat belt 600, so that the middle part of the seat belt 600 can form surface contact with the root of the thigh and the bottom of the abdomen of the user, and the side edge of the seat belt 600 no longer directly contacts the user. When a traffic accident or braking occurs, the tension of the seat belt 600 is transferred to the anti-collision protection pad 500, which protects the user through the anti-collision protection pad 500, prevents the user from being cut or injured by the side of the seat belt 600, and also improves the comfort of the user using the product of the present application.

[0582] It should be noted that the action principle of the anti-collision protection pad 500 is considered, so the anti-collision protection pad 500 of the present application is only a cushion layer with a cushioning function, and itself is not subjected to tension but only pressure, so the specific position and form setting can be relatively arbitrary, which can be fixed on the base plate 100, or fixed on the external cladding, or movably arranged, or directly wrapped on the safety belt 600, and in use, the anti-collision protection pad 500 is slid to the thigh root constraint area. As shown in FIGS. 89 and 5, the anti-collision protection pad 500 is two long strips, which are respectively located between the safety belt 600 and the thigh root; as shown in FIG. 6, the anti-collision protection pad 500 is approximately triangular, covering the entire user's abdomen, and can constrain the safety belt 600 at the thigh root to prevent the safety belt 600 from cutting or pressing the user's abdomen.

[0583] As shown in FIGS. 89 to 91, the first space 130 is arranged at the position between the two legs of the base plate 100, and the cavity at the bottom of the first space 130 forms the storage space 110. By arranging the first space 130 on the base plate 100, on the one hand, the bottom of the base plate 100 has sufficient space to form the storage space 110, which provides sufficient space for the operation of the fixed belt adjuster 200 and the first fixed belt 410, and on the other hand, the storage space 110 can be increased without increasing the thickness of the safety structure. Compared with forming the storage space 110 by increasing the thickness of the base plate 100 and arranging a storage groove, the present application not only reduces the space occupation of the safety structure, but also greatly reduces the weight of the safety structure, which realizes lightweight design while ensuring structural strength, so that it is convenient to carry.

[0584] The substrate 100 is provided with a connecting device for fixing the safety structure. As shown in FIGS. 89-91, the substrate 100 is provided with a hip cavity 140 at the top rear part, a bottom cavity 150 communicating with the receiving space 110 at the bottom, a second connecting hole 160 penetrating between the bottom of the hip cavity 140 and the bottom cavity 150, and two first mounting slots 141 penetrating to the rear part of the substrate on the rear side wall of the hip cavity 140. The connecting device includes a ring buckle 400, a third fixing belt 430 and a fourth fixing belt 440. The ring buckle 400 is arranged in the hip cavity 140. After the first fixing belt 410 is provided with a fixing belt adjuster 200 and a second fixing belt 420, the front end extends from the side of the receiving space 110 close to the edge of the safety structure, and the rear end extends to the bottom cavity 150 and is fixed on the ring buckle 400 after penetrating through the second connecting hole 160. The third fixing belt 430 and the fourth fixing belt 440 are fixed on the ring buckle 400 and respectively extend to the rear part of the substrate 100 after penetrating through the two first mounting slots 141, for connecting with the seat. The first fixing belt 410, the third fixing belt 430 and the fourth fixing belt 440 are connected by the ring buckle 400. Only one fixing belt adjuster 200 arranged on the first fixing belt 410 is needed to adjust the tightness of the first fixing belt 410, the second fixing belt 420, the third fixing belt 430 and the fourth fixing belt 440. On the one hand, the safety belt connecting piece 300 can be connected with the safety belt 600, and the safety belt 600 normally buckled on the abdomen can be pulled and fixed between the thighs of the passenger by tightening the first fixing belt 410. On the other hand, the tightness of the third fixing belt 430 and the fourth fixing belt 440 can be adjusted, so that the safety structure can be installed on seats of different sizes, and the tightness of the installation can be adjusted to facilitate the fixing of the two ends of the fixing belt on the seat.

[0585] As shown in FIG. 90 and FIG. 91, the front ends of the third fixing belt 430 and the fourth fixing belt 440 are fixedly connected with the loop buckle 400, and the rear ends pass through the first installation slot 141 and pass out from the rear of the base plate 100, which are used for installing the safety structure on the seat of the vehicle or the amusement facility. The rear ends of the third fixing belt 430 and the fourth fixing belt 440 are each provided with a first hook 450 which can be detachably connected with the ISOFIX interface of the child safety seat fixing system. Generally, the ISOFIX interface of the child safety seat fixing system is arranged on the rear seat of the vehicle or the amusement facility, and the safety structure of the present application can be installed not only on the front seat but also on the rear seat. When the safety structure needs to be installed on the front seat, the first hook 450 is connected with the connecting belt with the buckle, and then the connecting belt is bound on the backrest of the front seat and the buckle is fixed, so as to fix the safety structure on the front seat and provide protection for the driver or the passenger sitting in the front seat; when the safety structure needs to be installed on the rear seat, the first hook 450 is connected with the ISOFIX interface of the child safety seat fixing system on the rear seat, so as to fix the safety structure of the present application on the rear seat, and the passenger whose abdomen cannot be pressed can sit in the rear seat, thereby providing better safety guarantee.

[0586] As shown in FIG. 92 and FIG. 93, the fixing belt adjuster 200 includes two parts of a base 210 and a pressing piece 220, the base 210 is composed of a bottom plate 211 and side plates 212 installed on the opposite sides of the bottom plate 211, the pressing piece 220 includes a locking body 222 which can be in contact with the bottom plate 211 and a pressing handle 221 which is used for adjusting the fixing belt, the locking body 222 is provided with a connecting shaft 230, and the pressing piece 220 is rotatably installed on the two side plates 212 through the connecting shaft 230 and a torsional spring (not shown in FIG. 92). The bottom of the locking body 222 is provided with a clamping tooth 223, the first fixing belt 410 is installed between the bottom plate 211 and the clamping tooth 223, and the tightness of the fixing belt can be adjusted by operating the pressing handle 221. Specifically, the clamping tooth 223 is separated from the bottom plate 211 of the base 210 by pressing the pressing handle 221, so as to form a release state, at this time, a gap is formed between the clamping tooth 223 and the bottom plate 211, and the tightness of the first fixing belt 410, the third fixing belt 430 and the fourth fixing belt 440 can be adjusted by pulling the end of the first fixing belt 410 which extends out of the storage space 110, thereby facilitating the connection and fixation of the safety belt connecting piece 300 and the safety structure; when being adjusted to the appropriate position, the pressing handle 221 is loosened, the pressing piece 220 automatically rebounds under the elastic force of the torsional spring, so that the clamping tooth 223 is pressed in the bottom plate 211, at this time, the first fixing belt 410 is locked in the base 210 and cannot be pulled, and the positions of the first fixing belt 410, the third fixing belt 430 and the fourth fixing belt 440 are fixed.

[0587] As a preferred, the seat belt connector 300 is a hook or a clasp, which has good structural strength and can resist strong impact force, so as to improve the safety of the safety structure, and the hook or the clasp has a small size and is easy to hide in the sink 120.

[0588] As a preferred, the safety structure further comprises a buffer layer and a wrapping layer (not shown in FIG. 89) for wrapping the base plate 100 to form a seat cushion. The buffer layer is made of high-density fabric, sponge, rubber pad, sponge pad, silica gel pad or other cushioning materials, which can improve the comfort of passengers and further hide the seat belt connector 300 to avoid secondary injury caused by the protective cover to the passengers. The wrapping layer is made of flexible materials such as cloth, which further improves the comfort of users.

[0589] As a preferred, as shown in FIGS. 89-91, a plurality of through holes 170 are arranged on the left and right sides of the middle part of the base plate 100, so that the base plate 100 forms a hollow structure, which can greatly reduce the weight of the base plate 100 while ensuring the structural strength of the base plate 100, so that the safety structure of the present application is easy to carry and use.

[0590] As a preferred, the base plate 100 is made of alloy, high-strength carbon fiber, high-strength plastic, high-strength nylon, high-strength glass steel, high-strength ceramic or high-molecular material, etc. Through the high-strength base plate 100, the safety structure of the present application can resist the impact force caused by traffic accidents or braking, and provides stable safety protection for passengers whose abdomen cannot be pressed.

[0591] As a preferred, the height-adjusting pad is installed below the seat cushion base plate 100 through a connecting piece, and the connecting piece is a connecting hole, a connecting slot or a connecting block arranged on the seat cushion base plate. In the embodiment, a plurality of third connecting holes 180 are arranged on the base plate 100, and the height-adjusting pad can be installed below the base plate 100 through the third connecting holes 180. The passengers can choose whether to install the height-adjusting pad according to their own height, and choose the appropriate thickness of the height-adjusting pad, so that adults and children of different heights can use the safety structure of the present application.

[0592] Embodiment 35:

[0593] As shown in FIGS. 94-96, in the present embodiment, the substrate 100 is provided with a second space 190 at the position outside the two legs, and a second mounting groove 191 is formed below the second space 190 in a hollow structure. The connecting device is a length-adjustable connecting assembly mounted in the second mounting groove 191, which can be pulled out from the back of the substrate 100 and detachably connected with the ISOFIX interface of the child safety seat fixing system. Specifically, the connecting assembly is a seat cushion fixing belt or an ISOFIX hard interface connecting piece of the child safety seat fixing system. One end of the seat cushion fixing belt pulled out of the substrate 100 is provided with a second hook that can be detachably connected with the ISOFIX interface of the child safety seat fixing system. One end of the ISOFIX hard interface connecting piece of the child safety seat fixing system pulled out of the safety structure is provided with a buckle that can be detachably connected with the ISOFIX interface of the child safety seat fixing system. By setting the connecting assembly as the seat cushion fixing belt or the ISOFIX hard interface connecting piece of the child safety seat fixing system, the safety structure of the present application can be connected with the ISOFIX interface of the child safety seat fixing system on the rear seat cushion according to the use specifications of different countries, so that the user whose abdomen cannot be pressed can sit in the rear row, thereby providing better safety protectio...

Claims

A safety cushion characterized by The component for fixing the safety belt adopts a split design, comprising: a base provided with a plurality of supporting members; a flat plate member covering the base and supported and fixed by the supporting members, and provided with a plurality of connecting grooves; a protective cover fixed to the flat plate member for forming a connecting space around the connecting grooves; and an elastic buffer layer arranged on the flat plate member. The safety cushion according to claim 1, wherein The protective cover is a U-shaped cover including a horizontal bottom surface, a U-shaped inner side surface, a U-shaped outer side surface and a top surface, the horizontal bottom surface is provided with mounting holes corresponding to the connecting grooves, and the U-shaped inner side surface and the U-shaped outer side surface are both in the shape of three-surface slope gradually protruding. The safety cushion according to claim 1, wherein The base is provided with a plurality of stiffening ribs intersecting longitudinally and transversely. The safety cushion according to claim 1, wherein The base is provided with ISOFIX hard interface connectors or seat cushion fixing components near the bottom of both sides. The safety cushion according to claim 4, wherein The base is provided with a surrounding edge around, the seat cushion fixing component includes a fixing belt, a hook and a fixing belt adjuster, the base is inwardly recessed at both sides of the front end to form a first mounting space exposing the flat plate member, the fixing belt adjuster is fixed to the flat plate member exposed in the first mounting space, the surrounding edge near the rear end of the first mounting space is provided with a first gap for the fixing belt to pass through, the bottom of both sides of the rear end of the base is upwardly recessed to form a second mounting space, the surrounding edge near the front end of the second mounting space is provided with a second gap for the fixing belt to pass through, and the hook is fixed to the fixing belt passing through the second gap. The safety cushion according to claim 5, wherein The base in the second mounting space is provided with a hanging rod for temporarily fixing the hook. The safety cushion according to claim 1, wherein The connecting grooves are rectangular grooves, and each connecting groove is provided with a safety belt female buckle. A safety cushion characterized by Comprising: a base provided with a plurality of supporting members; a flat plate member covering the base and supported and fixed by the supporting members, and provided with a plurality of connecting grooves; an elastic buffer layer arranged on the flat plate member. The safety cushion according to claim 8, wherein The bottom surface of the bottom of the U-shaped groove and the top surface of the base have a gap space, the connecting grooves are circular grooves, and the plurality of circular grooves are connected by a sliding groove. The safety cushion according to claim 1 or 8, characterized in that The base is provided with a height increasing pad for adjusting the height. The safety cushion according to claim 10, wherein The base is provided with a connecting column, a connecting groove or a connecting block, and the height increasing pad is installed on the bottom of the base by any one or several connection modes of screws, interference and buckles. The safety cushion according to claim 1 or 8, characterized in that The supporting members are supporting columns or supporting blocks, and the supporting members are provided with connecting holes connected with the flat plate member. A safety structure for preventing abdominal compression on a seat, the seat including a safety belt, characterized by, The component for fixing the safety belt adopts a split design, and the safety structure comprises: a seat cushion base plate, which is a plate-shaped structure arranged on the seat and used for bearing weight, and a hollow structure is arranged at the position between the two legs of the front end of the seat cushion base plate to form a connecting part; a safety belt connecting device mounted on the safety belt and detachably connected with the connecting part; a protective cover mounted around the connecting part for surrounding and protecting the safety belt connecting device connected with the connecting part; a buffer layer for wrapping the seat cushion base plate and the protective cover to form a seat cushion; and a collision protection pad arranged on the seat cushion base plate at the side close to the user of the connecting part, used for restraining the safety belt, making the safety belt form a surface contact with the root of the user's thighs and the bottom of the abdomen, and preventing the safety belt side edge from cutting the user. The safety structure for preventing abdominal compression on a seat according to claim 13, wherein: The connecting part is a first protrusion arranged at the position between the two legs of the front end of the seat cushion base plate. The safety structure for preventing abdominal compression on a seat according to claim 14, wherein: The second space is provided with a second space at the position of the outer side of the two legs, and a sleeve is installed below the second space, and the two ends of the sleeve are fixed on the bottom of the cushion base plate and the end of the second space, respectively, forming a hollow structure below the second space. The safety structure for preventing abdominal compression on a seat according to claim 15, wherein: The second space and the hollow structure formed by the sleeve are provided with an adjustable length connecting assembly, which can be connected to the ISOFIX interface of the child safety seat fixing system. The safety structure for preventing abdominal compression on a seat according to claim 16, wherein: The connecting assembly is a safety structure fixing belt or an ISOFIX hard interface connecting piece of the child safety seat fixing system, and one end of the safety structure fixing belt or the ISOFIX hard interface connecting piece of the child safety seat fixing system is provided with a hook or a buckle which can be detachably connected to the ISOFIX interface of the child safety seat fixing system. The safety structure for preventing abdominal compression on a seat according to claim 13, wherein: The protection cover is a U-shaped cover including a horizontal bottom surface, a U-shaped inner side surface, a U-shaped outer side surface and a top surface, the horizontal bottom surface and the U-shaped outer side surface are fixed on the connecting part and the cushion base plate respectively, the U-shaped inner side surface and the U-shaped outer side surface surround and protect the safety belt connecting device connected to the connecting part, and the shape and size of the horizontal bottom surface are matched with the connecting part, so that the safety belt connecting device is connected to the connecting part in the U-shaped cover. The safety structure for preventing abdominal compression on a seat according to claim 18, wherein: The U-shaped inner side surface and the U-shaped outer side surface are both three-sided slope gradually protruding side surfaces. The safety structure for preventing abdominal compression on a seat according to claim 13, wherein: The cushion base plate is a hollow structure plate, and the connecting part at the front end of the cushion base plate between the two legs and the position outside the two legs are both hollow structures. A safety structure for preventing abdominal compression on a seat according to claim 20, wherein: A plurality of cushion blocks are arranged in the hollow structure plate. The safety structure for preventing abdominal compression on a seat according to claim 13, wherein: A height adjusting pad is installed below the cushion base plate through a connecting piece, and the connecting piece is a connecting hole, a connecting slot or a connecting block arranged on the cushion base plate. A hook-type safety structure for preventing abdominal compression on a seat, the seat including a safety belt, characterized by The safety structure comprises: The cushion base plate is a plate-shaped structure arranged on the seat and used for bearing weight, and the position of the front end of the cushion base plate between the two legs is provided as a hollow structure to form a mounting seat; The safety belt connecting mechanism is used for connecting the safety belt and comprises a hook arranged on the mounting seat and a locking device capable of locking with the hook to prevent the safety belt from being separated; The protection cover is installed on the cushion base plate around the mounting seat or is integrally formed with the cushion base plate, and is used for surrounding and protecting the safety belt connecting mechanism; The cushion is wrapped by the cushion base plate and the protection cover; The anti-collision protection pad is arranged on the cushion base plate at the side close to the user of the mounting seat, is used for restraining the safety belt, and makes the safety belt form a surface contact with the root of the user's thighs and the bottom of the user's abdomen to prevent the user from being cut by the side edge of the safety belt; and The cushion tail filling block is arranged between the rear end of the cushion base plate and the user's hips to make the user's body as close to the hook as possible. A lap-preventing hook-type safety structure for a seat according to claim 23, characterized in that: The mounting seat is a first space arranged at the position between the two legs of the cushion base plate, and the hook comprises a fixed end arranged on one side of the first space close to the middle part of the cushion base plate and a connecting end close to one side of the edge of the safety structure. A hook-type safety structure for preventing abdominal compression on a seat according to claim 24, wherein: The locking device is a spring type locking device, comprising a fixed sleeve installed in the mounting seat, a spring and a piston installed in the fixed sleeve, the piston being installed at the top of the spring and being lockable with the connecting end. A hook-type safety structure for preventing abdominal compression on a seat according to claim 25, characterized in that: An adjusting rod is arranged on the piston, the rear end of the adjusting rod being fixed on the piston and the front end of the adjusting rod extending out of the fixed sleeve and the safety structure, a vertical sliding slot and a horizontal sliding slot at the bottom of the vertical sliding slot being arranged on the fixed sleeve, and the adjusting rod being slidable in the vertical sliding slot and the horizontal sliding slot. A lap-preventing hook-type safety structure for a seat according to claim 24, characterized in that: The protective cover is a U-shaped cover comprising a horizontal bottom surface, a vertical side surface, a U-shaped inner side surface, a U-shaped outer side surface and a top surface, mounting holes matched with the safety belt connecting mechanism being arranged on the horizontal bottom surface and the vertical side surface, and the U-shaped inner side surface and the U-shaped outer side surface being gradually convex in a three-slope manner. A lap-preventing hook-type safety structure for a seat according to claim 23, characterized in that: The position of the cushion base plate outside the two legs is a hollow structure forming an installation slot, and a length-adjustable connecting assembly is installed in the installation slot, the connecting assembly being able to pass out from the rear of the cushion base plate and being detachably connected with the ISOFIX interface of the child safety seat fixing system. A lap-preventing hook-type safety structure for a seat according to claim 24, characterized in that: The locking device is a dial type locking device, comprising a nut fixed in the mounting seat, a screw rod passing through the top of the mounting seat and being threadedly connected with the nut, and a dial fixed on the screw rod, and the dial being rotatable to lock the top of the screw rod with the connecting end. A hook-type safety structure for preventing abdominal compression on a seat according to claim 28, characterized in that: The locking device is a barb locking device, comprising a barb installed on the connecting end, the distance between the barb and the horizontal bottom surface of the U-shaped cover being greater than the thickness of the safety belt. A hook-type safety structure for preventing abdominal compression on a seat according to claim 30, wherein: A plurality of hook connecting holes are arranged on the top of the mounting seat in the front-rear direction, and the fixed end of the hook is detachably connected with any hook connecting hole. A quick release type seat safety structure, the seat comprising a safety belt, characterized by, The assembly for fixing the safety belt adopts a split design, and the safety structure comprises: The cushion base plate is a plate-shaped structure arranged on the seat and used for bearing weight, a hollow structure is arranged at the position of the front end of the cushion base plate between the two legs to form a connecting part, and the connecting part is provided with a plurality of female buckles having different distances from the seat backrest; The safety belt connecting device comprises a connecting end and a plug-in end fixedly connected with the connecting end, the connecting end is provided with a sliding slot freely slidable on the safety belt, the plug-in end is provided with a lock hole detachably and plug-in connectably connected with the female buckle; The protective cover is installed around the connecting part and used for surrounding and protecting the safety belt connecting device connected with the connecting part; and The cushion is formed by wrapping the cushion base plate and the protective cover with a buffer layer. A quick release type seat safety structure according to claim 32, wherein: The connecting end comprises a fixed part and a movable part, the fixed part is integrally made with the plug-in end, the movable part is detachably and fixedly connected with the fixed part, and a gap forming the sliding slot is arranged between the movable part and the fixed part. A quick release type seat safety structure according to claim 32, wherein: The connecting end is a flat ring, the inner diameter of the flat ring forms the sliding slot, a first notch is formed on one side of the flat ring, a hinge rod is hingedly connected to the flat ring at one end of the first notch, and the hinge rod is detachably connected with the flat ring at the other end of the first notch through a threaded sleeve. A quick release type seat safety structure according to claim 32, wherein: The safety belt connecting device comprises two connecting plates and a fixing shell, one end of the connecting plate is a plug-in part, the other end is a connecting part, a lock hole is arranged on the plug-in part, a strip-shaped slot is arranged on the connecting part, a second gap for the safety belt to enter and exit is arranged on the strip-shaped slot, the two connecting plates are fixed together through the fixing shell after being attached, the lock holes are aligned after the two connecting plates are attached, and the second gaps on the strip-shaped slots are arranged staggeredly. A quick release type seat safety structure according to claim 32, wherein: The two connecting plates are completely identical in shape and size, one of the connecting plates is turned over by 180 degrees when being attached, so that the two second gaps are arranged staggeredly. A quick release type seat safety structure according to claim 32, wherein: The fixing shell is composed of two detachable half shells, and the two half shells are provided with a sink groove matched with the connecting part of the connecting plate and a through groove matched with the strip-shaped slot. A quick release type seat safety structure according to any one of claims 32-37, characterized in that: The connecting part is a first protrusion arranged between the two legs at the front end of the cushion base plate. A quick release type seat safety structure according to claim 38, wherein: A second space is arranged on the outside of the two legs of the cushion base plate, a clamping sleeve is arranged below the second space, and the two ends of the clamping sleeve are fixed to the bottom of the cushion base plate and the end of the second space respectively, so that a hollow structure is formed below the second space. A quick release type seat safety structure according to claim 39, wherein: A length-adjustable connecting assembly is arranged in the hollow structure formed by the second space and the clamping sleeve, the connecting assembly can pass out from the rear of the safety structure and be detachably connected with an ISOFIX interface of a child safety seat fixing system. A quick release type seat safety structure according to any one of claims 32-38, characterized in that: A collision protection pad is further arranged on the cushion base plate on the side close to the user of the connecting part, used for restraining the safety belt, so that the safety belt forms a surface contact with the root of the user's thigh and the bottom of the abdomen, and the safety belt side edge is prevented from cutting the user. A quick release type seat safety structure according to any one of claims 32-38, characterized in that: A height-adjusting pad is arranged below the cushion base plate through a connecting piece, and the connecting piece is a connecting hole, a connecting slot or a connecting block arranged on the cushion base plate. A rotary locking type seat belt connection mechanism is installed on a seat or a safety cushion on which a seat belt is provided, characterized by The assembly for fixing the safety belt adopts a split design, and the rotating locking type safety belt connecting mechanism comprises: A safety belt connecting device comprises a first connecting end for connecting with the safety belt and a second connecting end capable of connecting with a seat or a safety cushion, the second connecting end comprises a connecting seat and a connecting rod for fixing the connecting seat on the first connecting end, the connecting rod has a first direction cross-sectional width and a second direction cross-sectional width, and the first direction cross-sectional width is smaller than the second direction cross-sectional width; A connecting part is arranged on the seat or the safety cushion and used for connecting with the second connecting end, the connecting part is provided with an installation hole communicated with a sliding groove and a plurality of limiting holes, the installation hole is matched with the connecting seat in size, the width of the sliding groove is between the first direction cross-sectional width and the second direction cross-sectional width, and the limiting holes are larger than the second direction cross-sectional width of the connecting rod in size, so that the connecting rod can freely slide in the sliding groove in the first direction cross-sectional width direction, and the connecting rod is clamped in the limiting hole when being rotated to the second direction cross-sectional width under the action of an external force. A rotary latch safety belt connection according to claim 43, characterized in that: The first direction and the second direction of the connecting rod are perpendicular. A rotary locking seat belt attachment according to claim 44, characterized in that The connecting rod is a cylindrical rod with two opposite faces cut into planes, the first direction cross-sectional width is the distance between the two planes of the cylindrical rod, and the second direction cross-sectional width is the diameter of the cylindrical rod. A rotary locking seatbelt attachment according to claim 45, characterized in that The connecting seat is a disc with a diameter greater than the second direction cross-sectional width of the connecting rod. A rotary latch safety belt connection according to claim 46, characterized in that The diameter of the mounting hole is greater than the diameter of the connecting seat, and the diameter of the limiting hole is smaller than the diameter of the connecting seat. A rotary locking seat belt attachment according to claim 44, characterized in that The first connecting end comprises a fixed rod and a movable rod which are detachably connected. A rotary locking seatbelt attachment according to claim 48, characterized in that One end of the fixed rod and the movable rod is connected through a rotating pair, and the other end is detachably connected through a fastener. A rotary latch safety belt connection according to claim 49, wherein: A gap is arranged between the fixed rod and the movable rod for the safety belt to pass through. A rotary latch safety belt connection according to claim 50, wherein: The fixed rod is a U-shaped rod, and both ends of the movable rod are detachably connected to the top end of the U-shaped rod through a fastener. A rotary latch safety belt connection according to claim 48, wherein: The safety belt connecting device and the connecting part are made of high-strength metal, alloy, high-strength carbon fiber, high-strength plastic, high-strength nylon, high-strength glass steel, high-strength ceramic, or high-molecular material. A buckle slot locking type safety belt connecting mechanism is installed on a seat or a safety cushion, and a safety belt is provided on the seat or the safety cushion, characterized in that, The assembly for fixing the safety belt adopts a split design, and the safety belt connecting mechanism comprises: A safety belt connecting device comprises a first connecting end for connecting with the safety belt and a second connecting end connectable with a seat or a safety cushion, the second connecting end comprises a connecting seat and a connecting rod for fixing the connecting seat on the first connecting end, and the cross-sectional size of the connecting rod is smaller than that of the connecting seat. A connecting part is installed on the seat or the safety cushion and is used for connecting with the second connecting end, the connecting part is provided with a sliding groove and a mounting hole in communication with the sliding groove, the bottom of the sliding groove is provided with a plurality of limiting grooves, the sizes of the mounting hole and the limiting grooves are matched with the size of the connecting seat, and the width of the sliding groove is matched with the size of the connecting rod. The length of the connecting rod is greater than the depth of the sliding groove, the connecting seat passes through the mounting hole, under external force, the connecting rod is freely slid in the sliding groove, and under the tightening force of the safety belt, the connecting seat is clamped in the corresponding limiting groove after the external force is removed. A buckle latch type seat belt connection mechanism according to claim 53, characterized in that: The connecting rod is a cylindrical rod with a length greater than the depth of the sliding groove, and the connecting seat is a disc with a diameter greater than the diameter of the connecting rod. A buckle latch type seat belt connection mechanism according to claim 54, characterized in that: The diameters of the mounting hole and the limiting groove are greater than the diameter of the connecting seat. A buckle latch type seat belt connection mechanism according to claim 55, characterized in that: The width of the sliding groove is greater than the diameter of the connecting rod and smaller than the diameter of the connecting seat. A buckle latch type seat belt connection mechanism according to claim 56, characterized in that: The thickness of the limiting groove is smaller than the thickness of the sliding groove. A buckle latch type seat belt connection mechanism according to claim 54, characterized in that: The safety belt connecting device is provided with an elastic member for keeping the connecting seat away from the connecting part and clamped in the limiting groove. A buckle latch type seat belt connection mechanism according to claim 54, characterized in that: The first connecting end comprises a fixed rod and a movable rod which are detachably connected. A buckle latch type seat belt connection mechanism according to claim 59, characterized in that: One end of the fixed rod and the movable rod is connected through a rotating pair, and the other end is detachably connected through a fastener. A buckle latch type seat belt connection mechanism according to claim 59, characterized in that: A gap is arranged between the fixed rod and the movable rod for the safety belt to pass through. A buckle latch type seat belt connection mechanism according to claim 61, characterized in that: The fixed rod is a U-shaped rod, and both ends of the movable rod are detachably connected to the top end of the U-shaped rod through a fastener. A seat belt connection mechanism is installed on a seat or a safety cushion on which a seat belt is provided, characterized by The assembly for fixing the safety belt adopts a split design, and the safety belt connecting mechanism comprises: A safety belt connecting device comprises a connecting end installed on the safety belt and a plug-in end connectable with a seat or a safety cushion, and the plug-in end is provided with a lock hole. A connecting part is installed on the seat or the safety cushion and is used for connecting with the second connecting end, the connecting part is provided with a sliding groove and a mounting hole in communication with the sliding groove, the bottom of the sliding groove is provided with a plurality of limiting grooves, the sizes of the mounting hole and the limiting grooves are matched with the size of the connecting seat, and the width of the sliding groove is matched with the size of the connecting rod. The length of the connecting rod is greater than the depth of the sliding groove, the connecting seat passes through the mounting hole, under external force, the connecting rod is freely slid in the sliding groove, and under the tightening force of the safety belt, the connecting seat is clamped in the corresponding limiting groove after the external force is removed. The connecting rod is a cylindrical rod with a length greater than the depth of the sliding groove, and the connecting seat is a disc with a diameter greater than the diameter of the connecting rod. The diameters of the mounting hole and the limiting groove are greater than the diameter of the connecting seat. The width of the sliding groove is greater than the diameter of the connecting rod and smaller than the diameter of the connecting seat. The thickness of the limiting groove is smaller than the thickness of the sliding groove. The safety belt connecting device is provided with an elastic member for keeping the connecting seat away from the connecting part and clamped in the limiting groove. The first connecting end comprises a fixed rod and a movable rod which are detachably connected. One end of the fixed rod and the movable rod is connected through a rotating pair, and the other end is detachably connected through a fastener. A gap is arranged between the fixed rod and the movable rod for the safety belt to pass through. The fixed rod is a U-shaped rod, and both ends of the movable rod are detachably connected to the top end of the U-shaped rod through a fastener. The assembly for fixing the safety belt adopts a split design, and the safety belt connecting mechanism comprises: A safety belt connecting device comprises a connecting end installed on the safety belt and a plug-in end connectable with a seat or a safety cushion, and the plug-in end is provided with a lock hole. A connecting part is installed on the seat or the safety cushion and is used for connecting with the second connecting end, the connecting part is provided with a sliding groove and a mounting hole in communication with the sliding groove, the bottom of the sliding groove is provided with a plurality of limiting grooves, the sizes of the mounting hole and the limiting grooves are matched with the size of the connecting seat, and the width of the sliding groove is matched with the size of the connecting rod. A seat belt connection mechanism according to claim 63, characterized in that The locking member comprises a gear and a rack meshing inside the connecting part, and a plurality of locking pins connected with the rack, the number of the locking pins being the same as that of the insertion holes and the locking pins being inserted into the locking holes. A seat belt connection mechanism according to claim 64, characterized in that The installation height of the locking pin is the same as the height of the locking hole on the insertion end inserted into the insertion hole, and the size of the locking hole is larger than the cross-sectional size of the locking pin. A seat belt connection mechanism according to claim 65, characterized in that The movement direction of the rack is parallel to the axis of the locking hole on the insertion end inserted into the insertion hole. A seat belt connection mechanism according to claim 66, characterized in that: One end of the rack is meshed with the gear, and the other end is fixed with a connecting rod connecting the locking pins, and the locking pins are connected with the connecting rod. A seat belt connection mechanism according to claim 67, characterized in that: The connecting rod is installed in the middle of the locking pin, one end of the locking pin is inserted into the locking hole, and the other end is connected to the inner side wall of the connecting part through a spring. A seat belt connection mechanism according to claim 64, characterized in that A gear shaft is connected to the gear, one end of the gear shaft is fixedly connected with the gear, and the other end of the gear shaft is fixed with a rotating handle. A seat belt connection mechanism according to claim 64, characterized in that The locking member is a plurality of safety buckle female buckles arranged in the connecting part, and the locking hole on the insertion end can be matched with the safety buckle female buckle to form a lock. A seat belt connection mechanism according to claim 64, characterized in that The connecting part is spliced by an upper connecting part and a lower connecting part. A seat belt connection mechanism according to claim 65, characterized in that: The connecting end and the insertion end are detachably connected, and a gap through which the safety belt can pass is arranged between the connecting end and the insertion end. A seat belt connection mechanism according to claim 64, characterized in that The safety belt connecting device and the connecting part are made of high-strength metal, alloy, high-strength carbon fiber, high-strength plastic, high-strength nylon, high-strength glass steel, high-strength ceramic or high-molecular material. A safety structure for a seat comprising a safety belt, characterized by The assembly for fixing the safety belt adopts a split design, and the safety structure comprises: The seat cushion base plate is a plate-shaped structure arranged on the seat and used for bearing weight, and a U-shaped connecting part integrally formed with the seat cushion base plate is arranged at a position between the two legs at the front end of the seat cushion base plate. The U-shaped connecting part comprises a horizontal bottom surface, a U-shaped inner side surface and a U-shaped outer side surface. The U-shaped outer side surface is integrally formed with the seat cushion base plate on both sides thereof. The horizontal bottom surface is connected with the U-shaped inner side surface to jointly form a U-shaped space. The horizontal bottom surface is arranged at a position higher than the seat cushion base plate on both sides of the U-shaped connecting part, so that a hollow structure is formed below the U-shaped connecting part. The safety belt connecting device comprises a first connecting end used for connecting with the safety belt and a second connecting end used for connecting with the U-shaped connecting part in the U-shaped space. A buffer layer is used for wrapping the seat cushion base plate to form a seat cushion. A collision protection pad is arranged on the seat cushion base plate at a side of the U-shaped connecting part close to the user, and is used for restraining the safety belt to form a surface contact between the safety belt and the root of the user's thighs and the bottom of the user's abdomen, so as to prevent the user from being cut by the side edge of the safety belt. A safety structure for a seat according to claim 74, wherein: The U-shaped connecting part is formed by stamping or casting, or forging, or 3D printing, or mechanical processing, or injection molding, selective laser melting, or selective laser sintering, or metal deposition, or blow molding, or injection molding, or calendering, or suction molding, or mold pressing, or lamination, or thermoforming, or vacuum forming, or rotational molding, RTM molding, autoclave molding, oven molding, extrusion molding, mold pressing, mold molding, pultrusion molding, fiber winding molding, jet molding and contact molding process, or by one forming process. A safety structure for a seat according to claim 75, wherein: The depth of the U-shaped inner side is not less than the height of the safety belt connecting device, so that the U-shaped inner side and the U-shaped outer side enclose and protect the safety belt connecting device connected with the U-shaped connecting part. A safety structure for a seat according to claim 76, wherein: The U-shaped connecting part further comprises a top surface, and the connection between the top surface and the U-shaped inner side and the U-shaped outer side is a smooth round corner connection, and the U-shaped inner side and the U-shaped outer side are both three-slope gradually convex shapes. A safety structure for a seat according to claim 75, wherein: The seat cushion base plate is provided with an upward protruding part at the position of the outside of the two legs, a clamping sleeve is mounted below the protruding part, and the two ends of the clamping sleeve are fixed on the bottom of the seat cushion base plate and the end of the protruding part, respectively, to form a hollow structure mounting groove below the protruding part. A safety structure for a seat according to claim 78, wherein: A length-adjustable connecting assembly is mounted in the mounting groove, and the connecting assembly can be pulled out from the back of the seat cushion base plate and detachably connected with the ISOFIX interface of the child safety seat fixing system. A safety structure for a seat according to claim 75, wherein: The second connecting end comprises a connecting seat and a connecting rod fixed on the connecting seat and the first connecting end at two ends, respectively, and a mounting hole and a plurality of limiting members communicated by a sliding groove are arranged on the horizontal bottom surface of the U-shaped connecting part, the connecting seat can pass through the mounting hole, and the connecting rod can freely slide in the sliding groove, and the connecting seat is clamped and fixed by the limiting members when being slid to a suitable position. A safety structure for a seat according to claim 80, wherein: The connecting rod is a cylindrical rod with two opposite planes cut into planes, the connecting seat is a disc with a diameter larger than that of the arc surface of the connecting rod, and the limiting members are a plurality of limiting holes distributed at intervals on the horizontal bottom surface. The width of the sliding groove is greater than the distance between the two planes of the connecting rod and less than the diameter of the arc surface, and the size of the limiting hole is greater than the diameter of the arc surface of the connecting rod and less than the diameter of the connecting seat, so that the connecting rod can freely slide in the sliding groove in the direction of the two planes, and when the connecting rod is rotated to the width of the arc surface under the action of an external force, the connecting rod is clamped in the limiting hole. A safety structure for a seat according to claim 81, wherein: The connecting rod is a cylindrical rod with a length greater than the depth of the sliding groove, the connecting seat is a disc with a diameter greater than that of the connecting rod, and the limiting members are a plurality of limiting grooves distributed at intervals on the bottom of the sliding groove. A safety structure for a seat according to claim 82, wherein: The diameter of the mounting hole and the limiting groove is greater than the diameter of the connecting seat, the width of the sliding groove is greater than the diameter of the connecting rod and less than the diameter of the connecting seat, and under the action of an external force, the connecting rod can freely slide in the sliding groove, and after the external force is removed, the connecting seat is clamped in the corresponding limiting groove under the tightening force of the safety belt. A safety structure for a seat according to claim 74, wherein: A height-adjusting pad is mounted below the seat cushion base plate through a connecting member, and the connecting member is a connecting hole, a connecting groove or a connecting block arranged on the seat cushion base plate. A safety structure for a seat, comprising a seat cushion base plate, which is a plate-shaped structure provided on the seat for bearing a weight, characterized in that, The front end of the seat cushion base plate is provided with a U-shaped connecting part integrally formed with the seat cushion base plate at the position between the two legs, the U-shaped connecting part comprises a horizontal bottom surface, a U-shaped inner side and a U-shaped outer side, the U-shaped outer side is integrally formed with the seat cushion base plate on both sides thereof, the horizontal bottom surface is connected with the U-shaped inner side to jointly form a U-shaped space, and the position of the horizontal bottom surface is higher than that of the seat cushion base plate on both sides of the U-shaped connecting part, so that a hollow structure is formed below the U-shaped connecting part. A safety structure against abdominal pressure is provided on a seat, the seat including a safety belt, characterized by The safety structure comprises: A substrate is a plate-shaped structure arranged on the seat for bearing weight, and a receiving space is arranged at the bottom of the front end of the substrate between the two legs. A plurality of grooves are arranged at the top of the receiving space, and a first connecting hole is arranged at the bottom of each groove and penetrates the substrate vertically. A safety belt connecting mechanism includes a first fixing belt arranged in the receiving space, a fixing belt adjuster for adjusting the length of the first fixing belt, and a safety belt connecting piece arranged in the groove. The first fixing belt is connected with a second fixing belt which can pass through the first connecting hole and be fixed with the safety belt connecting piece. The safety belt connecting piece can be detachably connected with the safety belt. A collision protection pad is arranged on the substrate on the side of the receiving space close to the user for restraining the safety belt to form a surface contact with the user's thigh root and the bottom of the abdomen to prevent the safety belt from cutting the user. A safety structure against abdominal compression according to claim 86, characterized in that: The size of the groove is larger than the size of the safety belt connecting piece, and the size of the first connecting hole is larger than the cross-sectional size of the second fixing belt and smaller than the size of the safety belt connecting piece. A safety structure against abdominal compression according to claim 86, characterized in that: The substrate is provided with a first space between the two legs, and a cavity at the bottom of the first space forms the receiving space. The substrate is provided with a connecting device for fixing the safety structure. A safety structure against abdominal compression according to claim 88, characterized in that: The top of the substrate is provided with a hip cavity, and the bottom of the substrate is provided with a bottom cavity in communication with the receiving space. A second connecting hole is arranged between the hip cavity and the bottom cavity. Two first mounting grooves are arranged on the rear side wall of the hip cavity and penetrate to the rear of the substrate. The connecting device includes a ring buckle, a third fixing belt, and a fourth fixing belt. The ring buckle is arranged in the hip cavity. The first fixing belt extends to the bottom cavity and is fixed on the ring buckle after passing through the second connecting hole. The third fixing belt and the fourth fixing belt are fixed on the ring buckle and respectively pass through the two first mounting grooves and extend to the rear of the substrate for connection with the seat. A safety structure against abdominal compression according to claim 89, characterized in that: The end of the third fixing belt and the fourth fixing belt passing out of the substrate is provided with a first hook which can be detachably connected with an ISOFIX interface of a child safety seat fixing system. A safety structure against abdominal compression according to claim 88, characterized in that: The substrate is provided with a second space at the position outside the two legs. The second space is a hollow structure forming a second mounting groove. The connecting device is a length-adjustable connecting assembly arranged in the second mounting groove. The connecting assembly can pass out from the rear of the substrate and be detachably connected with the ISOFIX interface of the child safety seat fixing system. A safety structure against abdominal compression according to claim 86, characterized in that: The safety belt connecting piece is a hook or a lock. A safety structure against abdominal compression according to claim 86, characterized in that: The safety structure further includes a buffer layer and a wrapping layer which wrap the substrate to form a seat cushion. A safety structure against abdominal compression according to claim 86, characterized in that: A height-adjusting pad is arranged below the seat cushion substrate through a connecting piece. The connecting piece is a connecting hole, a connecting groove, or a connecting block arranged on the seat cushion substrate. A slide bar fixed type safety structure is provided on a seat, and the seat includes a safety belt, characterized in that: The safety structure includes: A substrate is a plate-shaped structure arranged on the seat for bearing weight; A safety belt connecting mechanism is arranged on the substrate for detachably fixing the safety belt between the two legs; and A U-shaped cover is arranged on the substrate for forming a receiving space in which the safety belt connecting mechanism is wrapped and protected. The safety belt connecting mechanism comprises a plurality of slots on a base plate, a sliding rod capable of sliding in and out of the slots, and a sliding mechanism for driving the sliding rod to slide in and out of the slots; when the sliding rod is driven by the sliding mechanism to slide out of the slots, the safety belt or a sub-buckle on the safety belt is pulled into the slots by an external force, and then the safety belt or the sub-buckle is fixed in the slots by driving the sliding rod into the slots by the sliding mechanism, so as to realize the pulling and connection of the transverse part of the safety belt on the seat between the base plate and the two thighs.

Images