Safe cushion

Abstract

The utility model discloses a safety cushion which comprises a cushion plate and a safety belt fixing piece arranged on the cushion plate, the cushion plate is detachably installed on a seat or integrally manufactured with the seat, a sinking groove is formed in the bottom of the cushion plate, and a connecting part is arranged in the sinking groove; and the safety belt fixing piece is detachably connected with the connecting part. The seat cushion plate and the safety belt fixing piece are manufactured separately, so that the machining cost is greatly reduced, the two components can be made of different materials, and the material cost is further reduced; in addition, a sinking groove and a through hole are formed in the cushion plate, when the cushion plate deals with brake impact, stress of the connecting structure is converted into front stress of the base and the sinking groove, stress of the safety belt fixing piece is directly dispersed on a body of the cushion plate through the sinking groove, and stability and impact resistance of connection of the safety belt fixing piece and the cushion plate are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of safety protection, and relates to a seat accessory structure, in particular to a safety cushion for protecting the abdomen of a passenger from injury. BACKGROUND

[0002] With the rapid entry of cars into thousands of households and the promotion and application of more and more convenient other public transport tools, more and more pregnant women, children and other people whose abdomens cannot be pressed need to drive or take a transport tool to travel. Since the safety belt of a car is suddenly tightened when braking or encountering a traffic accident, the abdomen of the people whose abdomens cannot be pressed is pressed or injured, which causes harm to the people. By setting a safety structure, the horizontal safety belt when the safety belt of the prior art is buckled on the car seat is pulled to the position between the legs, which can effectively avoid the pressing or injury of the abdomen caused by the tightening of the safety belt during emergency braking, but the products in the prior art more or less have some problems.

[0003] Chinese patent CN 201283818Y discloses a safety cushion special for pregnant women, which comprises a cushion and two fixing belts, one end of the fixing belt is provided with a lock catch or a lock tongue, and a positioning hook is further arranged in the cushion, the hook part of the positioning hook protrudes from the surface of the cushion, after the safety belt is buckled, the horizontal safety belt is pulled and hung on the positioning hook on the cushion, so that the horizontal safety belt does not press the position of the abdomen of the pregnant woman, and the fetus in the abdomen of the pregnant woman is not affected during emergency braking. However, there are many problems in the actual use of the product, which leads to the fact that the product has not been promoted to the market. During the use of the product, the cushion has a relatively large size and thus has a relatively strong impact resistance, the positioning hook has a relatively small size and thus has a relatively concentrated stress, so the positioning hook needs to withstand a large impact force. From the perspective of the safety belt of the product, the cushion and the positioning hook are preferably integrally made, so that high-strength materials are needed and a casting process is adopted. In the prior art, stainless steel is generally used for casting. Since the cushion and the positioning hook are an irregular part, a complex high-precision casting process is needed. Since the positioning hook is an exposed part during use and has a relatively high probability of contacting the user, polishing treatment is needed. Since the part is irregular, the polishing process is extremely complex. This series of reasons leads to a very high cost of integral casting, which is far beyond the expectation of consumers, so there is no economic value for production. If a split type is adopted, the cost problem can be well solved, but the common split type manufacturing technology in the prior art commonly uses connection processes such as welding, riveting and bolt connection, which are difficult to meet the impact resistance requirements of the positioning hook, so it is necessary to make corresponding modifications and adopt a low-cost connection technology to enable the product to be mass-produced at low cost and high quality, so as to promote the product to the market. UTILITY MODEL CONTENTS

[0004] The utility model discloses a safe seat cushion, solve the problem that the prior art safe seat cushion is either too high cost and does not have economic efficiency, or insufficient strength, can not satisfy the safe need of pregnant women, children and other abdomen cannot be pressed passengers' abdomen not to be injured.

[0005] In order to solve the above technical problem, the utility model adopts the technical scheme as follows:

[0006] The utility model provides a safe seat cushion, including seat cushion board and the safety belt fixing spare of being located on seat cushion board, the seat cushion board can be detached from the seat of a chair or with seat chair integration is made, the bottom of seat cushion board is equipped with the sunken groove, is equipped with the through -hole of upper and lower penetration in the sunken groove, the safety belt fixing spare includes the base and is equipped with the fixed hook of base, the base is installed in the sunken groove, the fixed hook passes through the through -hole and comes out to the seat cushion board top.

[0007] Further, the base and the fixed hook are made by one-piece casting, forging, plastic forming, machining, welding, powder metallurgy, metal injection molding, metal semi-solid forming, metal powder metallurgy, 3D printing, stamping, extrusion, bending and other processes.

[0008] Further, the base is formed with two platforms by inwardly recessing the middle part, the size of the first platform at the bottom of the base matches the size of the sunken groove at the bottom of the seat cushion board, and the size of the second platform at the top of the base matches the size of the through-hole.

[0009] Further, the first platform of the base and the sunken groove at the bottom of the seat cushion board are fixedly connected by welding, gluing, buckling or external fixing.

[0010] Further, the safety belt fixing part is made of high-strength metal, alloy, high-strength carbon fiber, high-strength plastic, high-strength nylon, high-strength glass steel, high-strength ceramic, carbon nanomaterial, super polymer material, composite material, graphene or high molecular material, and the seat cushion board is made of low-cost metal or alloy or high-strength plastic.

[0011] Further, the bottom of the seat cushion board is provided with a plurality of reinforcing ribs, wherein the reinforcing ribs are distributed at least around the sunken groove.

[0012] Further, a plurality of hollow holes for weight reduction are provided on the seat cushion board.

[0013] Further, the fixed hook includes a connection section and a horizontal section connected in sequence with gradually decreasing cross section, and a tail part is provided at the end of the horizontal section to prevent the fixed hook from being pulled out.

[0014] Further, the sink of the cushion plate bottom is made by casting, forging, plastic forming, machining, welding, powder metallurgy, metal injection molding, metal semi-solid forming, metal powder metallurgy, 3D printing, stamping, extrusion, bending and other processes.

[0015] Further, the sink is provided with a connecting part, and the safety belt fixing part comprises a first connecting end for connecting with the safety belt and a second connecting end connectable with the connecting part.

[0016] Further, the connecting part is an installation hole and a plurality of limiting parts connected by a sliding groove, the connecting seat can pass through the installation hole, and the connecting rod can freely slide in the sliding groove and be clamped and fixed by the limiting parts when sliding to a suitable position.

[0017] 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 parts are a plurality of limiting holes distributed on the horizontal bottom face; 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 be clamped in the limiting hole under the action of an external force when rotating to the width of the arc face; or

[0018] 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 parts are a plurality of limiting grooves distributed on the bottom of the sliding groove.

[0019] Further, the diameter of the installation 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.

[0020] Further, the bottom of the connecting section is provided with a base, and the connecting section, the base and the horizontal section all adopt smooth transitions.

[0021] Further, the anti-dropping tail part is a hook tip formed by bending the end of the horizontal section downward, and the gap distance between the hook tip and the horizontal section is 2-5 safety belt thicknesses.

[0022] Further, the connecting assembly is a seat cushion fixing belt or an ISOFIX hard interface connecting piece of a child safety seat fixing system, and one end of the seat cushion fixing belt or the ISOFIX hard interface connecting piece of the child safety seat fixing system is provided with a hook or a buckle capable of being detachably connected with an ISOFIX interface of the child safety seat fixing system.

[0023] Compared with the prior art, the utility model has the beneficial effects as follows:

[0024] The seat cushion plate and the safety belt fixing piece are separately manufactured in the utility model, the manufacturing cost is greatly reduced, two components can be made of different materials, and the material cost is further reduced; in addition, the utility model firmly connects the safety belt fixing piece and the seat cushion plate through the sink groove and the through hole on the seat cushion plate, the force of the connecting structure in the prior art is converted to the force of the sink groove, the force of the safety belt fixing piece is directly dispersed on the body of the seat cushion plate through the sink groove when the brake impact is responded, the stability and the impact resistance of the connection between the safety belt fixing piece and the seat cushion plate are greatly improved, the possibility of manufacturing the utility model safety seat cushion by connecting the separately manufactured components is realized; in addition, the size of the seat cushion plate is much larger than that of the safety belt fixing piece, therefore, the safety belt fixing piece has much higher requirement on the material strength than the seat cushion plate when the impact force is resisted, therefore, in the integrated casting in the prior art, only high-strength alloy or stainless steel can be used to meet the requirement, which causes extremely high cost and polishing difficulty of the fixing hook; after the utility model is manufactured in the separate mode, only the safety belt fixing piece needs to be made of high-strength material, such as high-strength alloy or stainless steel casting, and the seat cushion plate can be made of low-cost material, such as carbon steel, and the processing technology of the seat cushion plate is not limited to casting, and the seat cushion plate can be manufactured by common pressure casting, milling processing and other manufacturing methods in the prior art, which greatly reduces the cost and improves the flexibility.

[0025] Meanwhile, by setting the connecting assembly as the ISOFIX hard interface connecting piece of the seat cushion fixing belt or the child safety seat fixing system, the safety seat cushion 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 seat cushion of the application can be applied to seats of different sizes; the hook on the ISOFIX hard interface connecting piece or 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 seat cushion of the application can be installed on the rear seat. When it is needed to install the safety seat cushion on the front seat, the hook on the seat cushion fixing belt or the buckle on the ISOFIX hard interface connecting piece can be connected with the fixing belt with the buckle metal ring, the hook or the buckle of the child safety seat fixing system ISOFIX hard interface connecting piece is connected with the metal ring, the fixing belt is bound on the backrest of the front seat, and the buckle is fixed, so that the safety seat cushion is fixed on the front seat, and the user driving or sitting in the front row is protected. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structure schematic view of the safety seat cushion in the embodiment 1 of the application (viewed from top to bottom).

[0027] Figure 2 It is an exploded view of the safety seat cushion structure in the embodiment 1 of the application.

[0028] Figure 3 It is a bottom view of the seat cushion plate in the embodiment 1 of the application.

[0029] Figure 4 It is a structure schematic view of the safety belt fixing piece in the embodiment 1 of the application.

[0030] Figure 5 It is a sectional view of the safety seat cushion structure in the embodiment 1 of the application.

[0031] Figure 6 It is a bottom view of the seat cushion plate in the embodiment 2 of the application.

[0032] Figure 7 It is a sectional view of the safety seat cushion structure in the embodiment 3 of the application.

[0033] Figure 8 It is a schematic view of the seat cushion plate in the embodiment 4 of the application.

[0034] Figure 9 It is Figure 8 It is a partial enlarged schematic view A.

[0035] Figure 10 It is a schematic view of the safety belt fixing piece in the embodiment 4 of the application.

[0036] Figure 11 It is the schematic view of safety belt fixing piece in the embodiment 5 of the utility model.

[0037] Figure 12 It is the schematic view of connecting part (from top to bottom) in the embodiment 5 of the utility model.

[0038] Figure 13 It is the schematic view of connecting part (from bottom to top) in the embodiment 5 of the utility model.

[0039] 100-cushion plate, 110-sunken groove, 120-through hole, 130-rectangular hollow hole, 140-circular hollow hole, 150-first reinforcing rib, 160-second reinforcing rib, 170-groove;

[0040] 200-safety belt fixing piece, 210-base, 211-first layer platform, 212-second layer platform;

[0041] 220-fixing hook, 221-connecting section, 222-horizontal section, 223-anti-dropping tail part;300-connecting assembly,

[0042] 230-first connecting end, 231-fixing rod, 232-movable rod, 233-rotating pair, 234-fastener, 235-clearance, 240-second connecting end, 241-connecting seat, 242-connecting rod;

[0043] 500-connecting part, 501-mounting hole, 502-sliding slot, 503-limiting hole, 504-limiting slot. DETAILED DESCRIPTION

[0044] The embodiment of the utility model will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but cannot be used to limit the scope of the utility model.

[0045] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0046] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0047] Example 1: As Figures 1 to 5 As shown, this utility model provides a safety seat cushion, including a seat cushion board 100 and a seat belt fastener 200 disposed on the seat cushion board 100. The seat cushion board 100 is detachably installed on a seat or integrated with the seat. The bottom of the seat cushion board 100 is provided with a recessed groove 110, and the recessed groove 110 is provided with a through hole 120 extending vertically. The seat belt fastener 200 includes a base 210 and a fixing hook 220 disposed on the base 210. The base 210 is installed in the recessed groove 110, and the fixing hook 220 extends through the through hole 120 to the top of the seat cushion board 100.

[0048] This utility model relates to a seat, including traditional car seats, child seats, playground seats, etc. The seat cushion 100 and seat belt fastener 200 are manufactured separately. Then, by providing a groove 110 and a through hole 120 on the seat cushion 100, the seat belt fastener 200 is firmly connected to the seat cushion 100. When dealing with braking impacts, the force transfer base 210 and groove 110 of the existing connection structure are directly distributed to the seat cushion 100 body via the groove 110, greatly improving the stability and impact resistance of the connection between the seat belt fastener 200 and the seat cushion 100. This makes it possible to manufacture this utility model of a safety seat cushion using a separate manufacturing process followed by connection. Furthermore, because the seat cushion 100... The dimensions of the seat belt fastener 200 are much larger than those of the seat belt fastener 200. Therefore, when withstanding impact forces, the material strength requirements for the seat belt fastener 200 are much greater than those for the seat cushion 100. Thus, in the existing technology of integrated casting, only high-strength alloys or stainless steel can be used to meet the requirements, resulting in extremely high costs and difficulty in polishing the fastener 220. After the present invention is modified to be manufactured in a split manner, only the seat belt fastener 200 needs to be made of high-strength materials, such as high-strength alloys or stainless steel casting, while the seat cushion 100 can be made of low-cost materials, such as carbon steel. The processing technology of the seat cushion 100 is not limited to casting; it can be manufactured using common existing technologies such as die casting and milling, which greatly reduces costs and improves flexibility.

[0049] In addition, since the stress relationship is converted by the utility model, during assembly, the safety belt fixing part 200 and the cushion plate 100 can be connected by simple connection, such as welding (spot welding is also available), adhesion, buckle mode, interference fit or external fixing part mode, at this time, assembly and fixing only need to keep the safety belt fixing part 200 and the cushion plate 100 as a whole, and the brake impact force has been converted to the contact between the base 210 of the safety belt fixing part 200 and the sink groove 110 of the cushion plate 100.

[0050] As a preferred embodiment, the base 210 and the fixing hook 220 are made by integral casting, forging, plastic forming, machining, welding, powder metallurgy, metal injection molding, metal semi-solid forming, metal powder metallurgy, 3D printing, stamping, extrusion, bending and the like, so as to improve the structural strength of the safety belt fixing part 200 itself, the casting material can be high-strength alloy or stainless steel, and of course, 3D printing and other extended manufacturing methods can also be used for manufacturing.

[0051] As a preferred embodiment, as shown in Figure 4 , 5 In order to have both connection strength and aesthetics, the middle part of the base 210 is formed with two layers of platforms, the size of the first layer platform 211 at the bottom of the base 210 matches the size of the sink groove 110 at the bottom of the cushion plate 100, the size of the second layer platform 212 at the top of the base 210 matches the size of the through hole 120, and the sink groove 110 is a square hole, the first layer platform 211 is also a square platform with the same size, and the thickness of the first layer platform 211 is equal to the depth of the sink groove 110; the through hole 120 on the cushion plate 100 is also a square hole, the second layer platform 212 is a square platform with matching size, and the thickness of the second layer platform 212 is the same as the depth of the through hole 120, so that the top and bottom of the bottom part are flush with the top and bottom of the cushion plate 100 after assembly, and at the same time, through size matching, the base 210 and the sink groove 110 and the through hole 120 are just matched, so that after assembly, the whole safety belt fixing part 200 will not shake relative to the cushion plate 100, and the fixing mode between the two can be further simplified, and welding, spot welding, structural adhesive adhesion and the like can be used for fixing and assembly.

[0052] Since the fixing hook 220 of the safety belt fixing part 200 is an exposed component, it is often touched by hand and contacted with the safety belt, so that the fixing hook 220 needs to be polished and ground to improve user experience and prevent hidden damage such as wear and tear on the safety belt; after the split design of the utility model, only the fixing hook 220 part of the safety belt fixing part 200 needs to be polished and ground, and the whole safety cushion does not need to be carried for grinding, so that the best user experience is obtained at the lowest cost.

[0053] The safety belt fixing piece 200 is made of high-strength metal, alloy, high-strength carbon fiber, high-strength plastic, high-strength nylon, high-strength glass steel, high-strength ceramic, carbon nanomaterial, super polymer material, composite material, graphene or high polymer material, etc. Since the split type is adopted, the cushion plate 100 is made of low-cost metal material such as carbon steel, stainless steel, plastic, etc. The strength is met while the cost is greatly reduced.

[0054] As a preferred embodiment, as shown in Figures 3 to 5 The bottom of the cushion plate 100 is provided with a plurality of reinforcing ribs. The reinforcing ribs can greatly reduce the amount of material used while ensuring strength, thereby reducing weight and cost, and obtaining better user experience and economic value. The reinforcing ribs are distributed at least around the sink 110. Exemplarily, the first reinforcing ribs 150 are distributed around the sink 110, which mainly increase the strength of the sink 110 to meet the strength requirement of connection with the safety belt fixing piece 200. The second reinforcing ribs 160 are arranged horizontally and longitudinally in other areas of the bottom of the cushion plate 100. The second reinforcing ribs 160 increase the strength of the plate body of the cushion plate, so that the thickness of the plate body can be further reduced to save the amount of material and reduce the weight, thereby improving the user experience.

[0055] As a preferred embodiment, as shown in Figure 3 A plurality of weight-reducing hollow holes are arranged on the cushion plate 100. The amount of material and weight are reduced without affecting the structural strength, thereby improving the user experience. Exemplarily, the utility model sets a rectangular hollow hole 130 and six circular hollow holes 140. The rectangular hollow hole 130 is located in the middle behind the safety belt fixing piece 200, and the six circular hollow holes 140 are arranged on both sides of the safety belt fixing piece 200.

[0056] As a preferred embodiment, as shown in Figure 4 The fixing hook 220 includes a connecting section 221 and a horizontal section 222 which are gradually reduced in cross section and connected in sequence. The horizontal section 222 is provided with an anti-dropping tail 223 at the end. Through the gradually changing cross-section design, the strength requirement of the fixing hook 220 can be met to prevent deformation under the impact of the brake, and the size can be reduced to avoid interference with the ride. The anti-dropping tail 223 prevents the safety belt from slipping off, avoids the safety belt from slipping out of the fixing hook 220 due to various reasons during the ride, and causes the safety belt fixing piece 200 to fail.

[0057] As a preferred embodiment, as shown in Figure 4 The anti-dropping tail 223 is a hook tip formed by bending the end of the horizontal section 222 downward by 180 degrees. The hook tip extends horizontally by 1-10 cm, so that the hook tip has sufficient length to hold the safety belt.

[0058] In a preferred embodiment, the gap between the hook tip and the horizontal section 222 is 2-5 times the thickness of the seat belt to achieve a better effect of hooking the seat belt.

[0059] In a preferred embodiment, the bottom of the connecting section 221 is provided on the base 210, and the connecting section 221, the base 210, the horizontal section 222, and the anti-detachment tail 223 are all smoothly transitioned to prevent sharp edges and burrs from damaging the seat belt.

[0060] Example 2: As Figure 6 As shown, the difference from Embodiment 1 is that the bottom of the seat cushion is provided with an adjustable length connecting component 300, which can extend from the back of the seat cushion and be detachably connected to the ISOFIX interface of the child safety seat fixing system.

[0061] For example, the connecting component 300 is a seat anchor strap or an ISOFIX hard interface connector of a child safety seat fixing system. The end of the seat anchor strap or the ISOFIX hard interface connector of the child safety seat fixing system that protrudes from the seat plate is provided with a hook or buckle that can be detachably connected to the ISOFIX interface of the child safety seat fixing system.

[0062] Example 3: As Figure 7 As shown, the difference from Embodiment 1 is that the seat cushion is a plate, and a groove 170 matching the shape of the base 210 is formed in the middle of the seat cushion.

[0063] Example 4: Unlike the previous example, the sink is provided with a connecting part 500, and the seat belt fastener 200 includes a first connecting end 230 for connecting with the seat belt and a second connecting end 240 for connecting with the connecting part.

[0064] The first connecting end 230 of the seat belt fastener includes a fixed rod 231 and a movable rod 232. One end of the fixed rod 231 and the movable rod 232 are connected by a rotating joint 233, and the other end is detachably connected by a fastener 234. A gap 235 is provided between the fixed rod 231 and the movable rod 232 for the seat belt to pass through, so that the movable rod 232 can rotate around one end of the fixed rod 231 to realize the opening and closing of the first connecting end 230, thereby installing it on the seat belt.

[0065] The second connecting end 240 comprises a connecting seat 241 and a connecting rod 242 fixed at two ends of the connecting seat 241 and the first connecting end 230, the connecting part 500 is provided with an installation hole 501 and a plurality of limiting members communicated by a sliding groove 502 at the bottom of the sink 170, the connecting seat 241 can pass through the installation hole 501, the connecting rod 242 can freely slide in the sliding groove 502, and the connecting seat 241 is clamped and fixed by the limiting members when sliding to a suitable position.

[0066] In the embodiment, as shown in Figure 8 and Figure 9 the second connecting end 240 is fixed with the connecting part 500 by a rotating connection. The connecting rod 242 is a cylindrical rod with two opposite planes cut into planes, the connecting seat 241 is a disc with a diameter greater than the diameter of the arc surface of the connecting rod 242, and the limiting members are a plurality of limiting holes 503 distributed on the horizontal bottom surface. The width of the sliding groove 502 is greater than the distance between the two planes of the connecting rod 242 and less than the diameter of the arc surface, and the size of the limiting hole 503 is greater than the diameter of the arc surface of the connecting rod 242 and less than the diameter of the connecting seat 241, so that the connecting rod 242 can freely slide in the sliding groove 502 in the direction of the two planes, and when rotating to the width of the arc surface under the action of an external force at the limiting hole 503, it is clamped in the limiting hole 503.

[0067] Specifically, the diameter of the installation hole 501 is greater than or slightly greater (0.5-3mm) than the diameter of the connecting seat 241; the diameter of the limiting hole 503 is slightly greater (0.5-3mm) than the diameter of the arc surface of the connecting rod 242, and the diameter of the limiting hole 503 is less than the diameter of the connecting seat 241, the thickness of the flat rod part formed after the connecting rod 242 is cut is slightly less (0.5-2mm) than the width of the sliding groove 502, and the diameter of the arc surface of the connecting rod 242 is greater than the width of the sliding groove 502, so that the width of the sliding groove 502 is adapted to the distance between the two planes of the connecting rod 242. When it is necessary to fix the safety belt fixing piece 200 on the connecting part 500, first, the connecting seat 241 is passed through the installation hole 501, then the second connecting end 240 is rotated, so that the two planes of the connecting rod 242 cut after are opposite to the two sides of the sliding groove 502, at this time the connecting rod 242 can slide forward and backward in the sliding groove 502, when the connecting rod 242 slides to a suitable limiting hole 503, the second connecting end 240 is rotated, so that the two arc surfaces of the connecting rod 242 are opposite to the two sides of the sliding groove 502, at this time, since the diameter of the arc surface of the connecting rod 242 is greater than the width of the sliding groove 502, the connecting rod 242 cannot slide in the sliding groove 502, the connecting rod 242 is fixed in the limiting hole 503, thereby playing a role of fixing the safety belt fixing piece 200.

[0068] The safety belt fixing part 200 of the present application keeps the first connecting end 230 connected with the safety belt on the seat in the non-use state. When the user sits on the safety structure, the second connecting end 240 of the safety belt fixing part 200 is fixed on the connecting part 500, and the connecting rod 242 is fixed in the limiting hole 503 at the appropriate position according to the size and body shape of the user's abdomen, so that the connection position of the second connecting end 240 and the connecting part 500 can be adjusted. The installation position of the safety belt fixing part 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 serious accident, which improves the safety of the safety structure of the present application and also improves the comfort of the user when using the safety structure. After use, the second connecting end 240 is detached from the connecting part 500.

[0069] Example 5: The difference from example 4 is that in this example, as shown in Figures 10 to 12 the second connecting end 240 is fixed by the way of card slot connection with the connecting part 500. The connecting rod 242 is a cylindrical rod with a height greater than the thickness of the sliding groove 502, the connecting seat 241 is a disc with a diameter greater than the diameter of the connecting rod 242, and the limiting part is a plurality of limiting grooves 504 distributed at the bottom of the sliding groove 502. The diameters of the mounting hole 501 and the limiting groove 504 are greater than the diameter of the connecting seat 241, the width of the sliding groove 502 is greater than the diameter of the connecting rod 242 and less than the diameter of the connecting seat 241, and under the external force, the connecting rod 242 can slide freely in the sliding groove 502. After removing the external force, the connecting seat 241 is clamped in the corresponding limiting groove 504 under the tightening force of the safety belt.

[0070] Specifically, the diameters of the mounting hole 501 and the limiting groove 504 are greater than or slightly greater (0.5-3mm greater) than the diameter of the connecting seat 241, so that the connecting seat 241 can smoothly pass through the mounting hole 501 and enter the limiting groove 504; the width of the sliding groove 502 is greater than or slightly greater (0.5-2mm greater) than the diameter of the connecting rod 242 and less than the diameter of the connecting seat 241, so that the width of the sliding groove 502 is adapted to the diameter of the connecting rod 242, so that when the connecting seat 241 is separated from the limiting groove 210, the connecting rod 242 can freely slide in the sliding groove 502; the thickness of the limiting groove 504 is less than the thickness of the sliding groove 502, so that the connecting seat 241 can be fixed in the limiting groove 504 at the bottom of the sliding groove 502; the length (axial length) of the connecting rod 242 is greater than the thickness (or the depth of the sliding groove 502) of the connecting part 200, so that when the safety belt fixing part 200 moves along the axial direction of the connecting rod 242, the connecting seat 241 can smoothly enter or exit the limiting groove 504.

[0071] When it is necessary to fix the safety belt fixing part 200 on the connecting part 500, first, the connecting seat 241 is passed through the mounting hole 501, and then an external force is applied to make the connecting rod 242 freely slide forward and backward in the sliding groove 502. When the connecting rod 242 slides to the limiting groove 504 at the appropriate position according to the body type of the passenger, the external force is removed and the safety belt fixing part 200 is pulled tight upward, so that the connecting seat 241 abuts against the limiting groove 504 at the bottom of the sliding groove 502. Since the connecting seat 241 is adapted to the size of the limiting groove 504 and is greater than the width of the sliding groove 502, at this time, under the action of the tension of the safety belt itself, the connecting seat 241 is clamped in the limiting groove 504, and the connecting rod 242 cannot slide in the sliding groove 502, thereby playing a role of fixing the safety belt fixing part 200. Since the safety belt itself also has a tension, the connecting seat 241 will not be separated from the limiting groove 504 under the action of gravity, and the safety belt fixing part 200 is locked and fixed with the connecting part 200.

[0072] The above embodiments are only used to illustrate the present application, and are not intended to limit the present application. Although the present application is described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions of the present application do not deviate from the spirit and scope of the present application, and should be covered in the scope of the claims of the present application.

Claims

1. A safety seat cushion, comprising a seat cushion board and a seat belt fastener disposed on the seat cushion board, characterized in that: The seat cushion can be detachably installed on the seat or integrated with the seat. The bottom of the seat cushion has a recessed groove with a through hole running vertically through the groove. The seat belt fastener includes a base and a fixing hook on the base. The base is installed in the recessed groove, and the fixing hook extends through the through hole to the top of the seat cushion.

2. The safety seat cushion according to claim 1, characterized in that, The base and fixing hook are made by integral casting, forging, plastic forming, machining, welding, powder metallurgy, metal injection molding, metal semi-solid forming, metal powder metallurgy, 3D printing, stamping, extrusion or bending processes.

3. The safety seat cushion according to claim 1, characterized in that, The base is recessed in the middle to form two platforms. The size of the first platform at the bottom of the base matches the size of the groove at the bottom of the seat cushion, and the size of the second platform at the top of the base matches the through hole.

4. The safety seat cushion according to claim 3, characterized in that, The first platform of the base is fixedly connected to the groove at the bottom of the seat cushion by welding, gluing, snap-fitting or external fasteners.

5. The safety seat cushion according to claim 3, characterized in that, The seat belt fasteners and seat cushions are made of high-strength metals, alloys, high-strength carbon fibers, high-strength plastics, high-strength nylon, high-strength fiberglass, high-strength ceramics, carbon nanomaterials, super polymer materials, composite materials, graphene, or other polymer materials.

6. The safety seat cushion according to claim 1, characterized in that, The settling tank is provided with a connecting part, and the seat belt fastener includes a first connecting end for connecting to the seat belt and a second connecting end for connecting to the connecting part.

7. The safety seat cushion according to claim 6, characterized in that, The second connecting end includes a connecting seat and a connecting rod with its two ends fixed to the connecting seat and the first connecting end, respectively. The connecting part consists of a mounting hole and several limiting members connected by a sliding groove. The connecting seat can pass through the mounting hole, and the connecting rod can slide freely in the sliding groove. When it slides to a suitable position, the limiting members engage and fix the connecting seat.

8. The safety seat cushion according to claim 7, characterized in that, The connecting rod is a cylindrical rod with two opposing surfaces cut into planes; the connecting seat is a disc with a diameter larger than the diameter of the arc surface of the connecting rod; the limiting member is a plurality of limiting holes spaced apart on a 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; 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, allowing the connecting rod to slide freely in the sliding groove in both plane directions. When the connecting rod rotates to the width of the arc surface under the action of external force at the limiting hole, it is engaged in the limiting hole; or The connecting rod is a cylindrical rod with a length greater than the depth of the groove, the connecting seat is a disc with a diameter greater than the diameter of the connecting rod, and the limiting member is a plurality of limiting grooves spaced apart at the bottom of the groove.

9. The safety seat cushion according to claim 1, characterized in that: The bottom of the seat cushion is provided with an adjustable length connecting component, which can extend from the rear of the seat cushion and be detachably connected to the ISOFIX interface of the child safety seat fixing system.

10. The safety seat cushion according to claim 9, characterized in that: The connecting component is a seat anchor strap or an ISOFIX hard interface connector of a child safety seat fixing system. The end of the seat anchor strap or the ISOFIX hard interface connector of the child safety seat fixing system that protrudes from the seat plate is provided with a hook or buckle that can be detachably connected to the ISOFIX interface of the child safety seat fixing system.

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