Clamping groove locking type safety belt connecting mechanism

Abstract

The utility model provides a clamping groove locking type safety belt connecting mechanism. The clamping groove locking type safety belt connecting mechanism comprises a safety belt connecting device and a connecting part. The connecting part is arranged on the seat or the safety cushion, the safety belt connecting device installed on the safety belt is connected with the connecting part, and the safety belt located on the belly when the safety belt is tied according to the existing technical specifications is pulled and fixed to the connecting part through the safety belt connecting device. Discomfort caused by pressing the abdomen of a passenger when the safety belt contracts can be avoided; the sliding groove matched with the connecting rod of the second connecting end and the limiting grooves matched with the connecting bases are formed in the connecting part, the connecting rod can move in the sliding groove, the appropriate limiting grooves are selected for connection and fixation according to the body types of passengers, the passenger seat can be suitable for the passengers of different body types, and the use comfort is improved. The safety belt connecting device and the connecting part are both made of high-strength materials, enough support and protection can be provided for passengers, and the safety performance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of safety belt accessories, in particular to a slot locking type safety belt connecting mechanism. Background Art

[0002] With the rapid adoption of cars and the increasing availability of other convenient forms of public transportation, more and more pregnant women, children, and other people whose abdomens cannot withstand pressure are driving or riding in public transportation. Because vehicle seat belts can suddenly tighten during braking or in traffic accidents, compressing or injuring the abdomen of those with such conditions can cause harm. Therefore, a seat belt attachment mechanism is needed to secure the traditional seat belt around the passenger's abdomen to the passenger's thighs, preventing compression.

[0003] Chinese utility model patent CN205589177U discloses a safety belt fastening device for pregnant women, comprising a bracket body fixed to a seat, and a safety belt winding handle mounted on the surface of the bracket body. The safety belt is tightly hooked through the winding handle and fixed between the thighs, preventing the belt from compressing the pregnant woman's abdomen in an emergency. However, the seat belt is fixed in position on the winding handle and cannot be adjusted according to the passenger's body shape, which affects the passenger's comfort.

[0004] Chinese invention patent CN106627473A discloses a safety belt for pregnant women. The safety belt includes a cushion and a safety belt connection mechanism. The safety belt connection mechanism is a seat belt fastener. Openings are provided in the center and at the two front corners of the cushion, and safety belt fasteners are provided at the two rear corners. The safety belt fasteners can be passed through the center opening or the two front corner openings to secure the vehicle's safety belt to the center or outer thighs of the user. This safety belt protects the user's abdomen in the event of a car collision and can be used regardless of whether the user is wearing a skirt or pants. However, this safety belt connection mechanism is not only difficult to install and remove, but also, being made solely of textiles, it is prone to safety hazards due to the lack of protection from high-strength structural components. Therefore, there is an urgent need for a safe and reasonable safety belt connection mechanism that can secure the safety belt knot located at the abdomen to the seat cushion when the vehicle is fastened according to existing regulations, so as to improve the friendliness of existing safety belts in vehicles for pregnant women and children. Utility Model Content

[0005] The technical problem to be solved by the present invention is to address the shortcomings of the existing technology and provide a slot-locking seat belt connection mechanism that can adjust the fixed position of the seat belt according to the passenger's body shape, can provide high-strength support and protection for the passenger, and is safe, stable, easy to install, and easy to operate. The slot-locking seat belt connection mechanism provided in this application adopts the following technical solutions:

[0006] A slot-locking safety belt connection mechanism is installed on a seat or a safety cushion, and the seat or the safety cushion is provided with a safety belt. The slot-locking safety belt connection mechanism includes:

[0007] A safety belt connecting device, comprising a first connecting end for connecting to the safety belt and a second connecting end capable of connecting to a seat or a safety cushion, wherein the second connecting end comprises a connecting seat and a connecting rod securing the second connecting end to the first connecting end, wherein the cross-sectional dimensions of the connecting rod are smaller than the cross-sectional dimensions of the connecting seat;

[0008] a connecting portion mounted on the seat or safety cushion and configured to connect to the second connecting end; the connecting portion being provided with a slide groove and a mounting hole communicating with the slide groove; a plurality of limiting grooves being provided at the bottom of the slide groove; the sizes of the mounting holes and the limiting grooves being adapted to the sizes of the connecting seat; and the width of the slide groove being adapted to the size of the connecting rod;

[0009] The length of the connecting rod is greater than the depth of the slide groove. After the connecting seat passes through the mounting hole, the connecting rod slides freely in the slide groove under external force. After the external force is removed, the connecting seat is engaged in the corresponding limit groove under the tightening force of the safety belt.

[0010] Furthermore, 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.

[0011] Furthermore, the diameters of the mounting hole and the limiting groove are larger than the diameter of the connecting seat.

[0012] Furthermore, the width of the sliding groove is greater than the diameter of the connecting rod and smaller than the diameter of the connecting seat.

[0013] Furthermore, the thickness of the limiting groove is smaller than the thickness of the sliding groove.

[0014] Furthermore, the safety belt connecting device is provided with an elastic member which keeps it away from the connecting portion so as to engage the connecting seat in the limiting groove.

[0015] Furthermore, the elastic member is sleeved around the connecting rod or arranged around the sliding groove, and the thickness of the elastic member is greater than the thickness of the connecting seat.

[0016] Furthermore, the elastic member includes but is not limited to elastic materials such as a spring, a spring sheet or a sponge.

[0017] Furthermore, the method includes but is not limited to installing around the connecting rod or around the sliding groove by welding, riveting, bolt and screw connection, snap connection or gluing.

[0018] Furthermore, the first connecting end includes a detachably connected fixed rod and a movable rod.

[0019] Furthermore, one end of the fixed rod and the movable rod are connected by a rotating pair, and the other end is detachably connected by a fastener.

[0020] Furthermore, a gap is provided between the fixed rod and the movable rod for the safety belt to pass through.

[0021] Furthermore, 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 fasteners.

[0022] Furthermore, the safety belt connecting device and the connecting part are both made of high-strength metal, alloy, high-strength carbon fiber, high-strength plastic, high-strength nylon, high-strength fiberglass, high-strength ceramic or polymer material.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. By providing a connecting portion on a safety seat or child car safety seat or safety cushion in a vehicle or amusement ride, and connecting a seatbelt connecting device mounted on a seatbelt to the connecting portion, a seatbelt fastened in accordance with existing technical specifications can be secured to the seat or safety cushion via the slot-locking seatbelt connecting mechanism at the seatbelt knot located at the abdomen. This transfers the pressure of the seatbelt on the passenger's abdomen to the thighs, thus preventing discomfort caused by the seatbelt contracting and pressing on the passenger's abdomen during an accident or braking.

[0025] 2. By providing a slide groove and multiple stop grooves on the connecting portion, the connection position of the seatbelt connecting device and the connecting portion is adjustable. The connecting rod at the second connecting end moves within the slide groove, allowing the appropriate stop groove to be selected for connection and fixation according to the abdominal size and body shape of different passengers. Therefore, the slot-locking seatbelt connecting mechanism of the present application can be adapted to passengers of different body shapes, improving passenger comfort. It is also easy to install and operate. At the same time, it can secure the seatbelt on a vehicle or amusement ride as close to the passenger's thigh as possible, minimizing the user's forward displacement during braking or an accident, allowing the seatbelt to generate restraining force in a timely manner, and promptly triggering the airbag to deploy in the event of a serious accident, thereby improving the safety of the safety mechanism of the present application. The seatbelt connecting device and connecting portion of the present application are both made of high-strength stainless steel or alloy, high-strength carbon fiber, high-strength plastic, high-strength nylon, high-strength fiberglass, high-strength ceramic, carbon nanomaterial, ultra-strong polymer material, composite material, graphene, or polymer material, providing high-strength support and protection for passengers and improving safety performance.

[0026] 3. By configuring the first connecting end of the seatbelt connector to be detachable, the seatbelt connector can be easily installed and fixed to the seatbelt. By providing a gap between the fixed rod and the movable rod for the seatbelt to pass through, the seatbelt connector can be moved on the seatbelt. This not only facilitates connecting the seatbelt connector to the connecting portion but also allows adjustment to a comfortable position for the passenger, thereby enhancing comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the overall structure of the safety belt connection device in the first embodiment of the present utility model;

[0028] Figure 2 This is a schematic diagram of the top structure of the connecting portion of the utility model;

[0029] Figure 3 This is a schematic diagram of the bottom structure of the connecting portion of the utility model;

[0030] Figure 4 This is a schematic diagram of the overall structure of the safety belt connection device in the second embodiment of the present utility model;

[0031] Figure 5 This is a schematic diagram of the overall structure of the safety belt connection device in the second embodiment of the present utility model;

[0032] Figure 6 It is a schematic diagram of the overall structure of the safety belt connecting device in the second embodiment of the present utility model.

[0033] Reference numerals:

[0034] 100 - Safety belt connection device, 110 - First connecting end, 111 - Fixed rod, 112 - Movable rod, 113 - Rotation pair, 114 - Fastener, 115 - Gap, 116 - First protrusion, 117 - Second protrusion, 118 - Third protrusion, 120 - Second connecting end, 121 - Connecting seat, 122 - Connecting rod, 123 - Elastic member;

[0035] 200-connecting part, 210-mounting hole, 220-limiting groove, 230-sliding groove. DETAILED DESCRIPTION

[0036] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments. The embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0037] The present application is further described in detail below with reference to the accompanying drawings.

[0038] Example 1:

[0039] like Figures 1 to 3 As shown, the present application provides a slot-locking safety belt connection mechanism, which is installed on a seat of a vehicle or amusement facility or a child car safety seat or a safety seat cushion, wherein the seat or safety seat cushion is provided with a safety belt. The slot-locking safety belt connection mechanism includes:

[0040] The seatbelt connection device 100 includes a first connection end 110 that can be connected to the seatbelt (which, in the prior art, is located at the passenger's abdomen when the vehicle seatbelt is fastened) and a second connection end 120 that can be connected to a seat or safety cushion. The second connection end 120 includes a connection base 121 and a connecting rod 122 fixed at both ends to the connection base 121 and the first connection end 110, respectively. The cross-sectional dimensions of the connecting rod 122 are smaller than the cross-sectional dimensions of the connection base 121.

[0041] The connecting portion 200 is mounted on the seat or safety cushion and is used to connect to the second connecting end 120. The connecting portion 200 is provided with a slide groove 230 and a mounting hole 210 connected to the slide groove 230. The bottom of the slide groove 230 is provided with a plurality of limiting grooves 220. The dimensions of the mounting holes 210 and the limiting grooves 220 are adapted to the dimensions of the connecting seat 121, and the width of the slide groove 230 is adapted to the dimensions of the connecting rod 122.

[0042] The length of the connecting rod 122 is greater than the depth of the slide groove 230. After the connecting seat 121 passes through the mounting hole 210, the connecting rod 122 slides freely in the slide groove 230 under the external force. After the external force is removed, the connecting seat 121 is engaged in the corresponding limit groove 220 under the tightening force of the seat belt.

[0043] The present application provides a connecting portion 200 on a seat or child car safety seat or a safety seat cushion of a vehicle or amusement facility, and connects the safety belt connecting device 100 installed on the safety belt to the connecting portion 200. After the safety belt is fastened in accordance with existing technical specifications, the safety belt knot located on the abdomen is fixed to the connecting portion 200 through the safety belt connecting device 100. In the event of a safety accident or braking, the contraction force of the safety belt will act entirely on the passenger's thighs, which can avoid compressing the passenger's abdomen when the safety belt contracts and causing injury and discomfort to people whose abdomens cannot bear pressure, such as pregnant women. By providing a sliding groove 230 adapted to the connecting rod 122 of the second connecting end 120 and a plurality of limiting grooves 220 adapted to the connecting seat 121 on the connecting portion 200, the connection position of the safety belt connecting device 100 and the connecting portion 200 can be adjusted. The connecting rod 122 passes through the slide groove 230 and moves freely in the slide groove 230, so as to fix the connecting seat 121 in the limiting groove 220 at the appropriate position at the bottom of the slide groove 230 according to the passenger's body shape, and restrain the safety belt as close to the user's thigh root as possible, thereby realizing the connection and fixation of the safety belt connecting device 100 and the connecting part 200. Therefore, the slot locking safety belt connecting mechanism of the present application can be suitable for passengers of different body shapes, improving the comfort of use, and the safety belt connecting device 100 is easy to install and operate. At the same time, the safety belt on the vehicle or amusement facility is restrained as close to the passenger's thigh root as possible, minimizing the user's forward displacement when braking or in an accident, so that the safety belt can generate restraint force in time, and the airbag can be triggered to open in time in a serious accident, thereby improving the safety of the safety seat cushion of the present application.

[0044] It should be noted that when the slot-locking seatbelt connection mechanism of this application is directly installed on the seat, to facilitate the installation of the connection portion 200, it is generally necessary to modify the vehicle seat or safety cushion or provide a seat cushion base, which is then secured to the seat or safety cushion. The applicant has simultaneously applied for this technology in other patents. The slot-locking seatbelt connection mechanism of this application can also be installed on a safety cushion, which is then secured to the seat, thereby achieving better protection for the occupant.

[0045] In the present application, the connecting rod 122 is set as a cylindrical rod with a height greater than the thickness of the slide groove 230, and the connecting seat 121 is a disc with a diameter greater than the diameter of the connecting rod 122, so that the connecting rod 122 can pass through the slide groove 230 and move freely in the slide groove 230. When it moves to the limit groove 220 at a suitable position according to the passenger's body shape, tightening the seat belt connection device 100 can fix the connecting seat 121 in the limit groove 220 at the corresponding position, and then connect the seat belt connection device 100 to the seat or safety cushion to fix the seat belt to the passenger's thigh.

[0046] Specifically, such as Figures 1 to 3 As shown, the diameters of the mounting hole 210 and the limiting groove 220 are larger or slightly larger (0.5-3 mm 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 larger or slightly larger (0.5-2 mm larger) than the diameter of the connecting rod 122, and smaller 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 1 When 21 is separated from the limiting groove 210, the connecting rod 122 can slide freely and smoothly 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 of the connecting part 200 (or the depth of the sliding groove 230), 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.

[0047] When the safety belt connecting device 100 needs to be fixed to the connecting part 200, first, the connecting seat 121 is passed through the mounting hole 210 on the connecting part 200, and then the safety belt connecting device 100 is pressed down to make the connecting rod 122 slide freely forward and backward in the slide groove 230. When the connecting rod 122 slides to the limiting groove 220 at the appropriate position according to the body shape of the passenger, the safety belt connecting device 100 is released, and the tension of the safety belt itself will tighten the safety belt connecting device 100 upward, so that the connecting seat 121 is against the limiting groove 220 at the bottom of the slide groove 230. 20, since the connecting seat 121 is adapted to the size of the limiting groove 220 and is larger than the width of the slide groove 230, under the action of the tensioning force of the safety belt itself, the connecting seat 121 is clamped in the limiting groove 220, and the connecting rod 122 cannot slide in the slide groove 230, thereby playing the role of fixing the safety belt connecting device 100. Since the safety belt itself also has tensioning force, the connecting seat 121 will not automatically separate from the limiting groove 220 under the action of gravity, thereby realizing the locking and fixation of the safety belt connecting device 100 and the connecting part 200.

[0048] The first connection end 110 includes a detachably connected fixed rod 111 and a movable rod 112. Figure 1As shown, the two ends of the fixed rod 111 protrude upward and are both provided with connection holes, and the two ends of the movable rod 112 protrude downward and are both provided with connection holes and mounting slots that match the two ends of the fixed rod 111. The two ends of the fixed rod 111 are respectively installed in the mounting slots at the two ends of the movable rod 112. One end of the fixed rod 111 and the movable rod 112 are connected through the connection hole by a rotating pair 113, and the other end is detachably connected through the connection hole by a fastener 114, so that one end of the movable rod 112 can rotate around the fixed rod 111 to achieve the opening and closing of the first connection end 110. Specifically, one end of the fixed rod 111 and the movable rod 112 are connected by a movable connection device such as a screw, a screw, a rivet or a hinge, and the other end is detachably connected by a fastener 114 such as a bolt or a pin. Preferably, one end of the movable rod 112 for mounting the fastener 114 is provided with a recessed groove, so that the end of the fastener 114 can be hidden in the recessed groove after installation, without causing interference to passengers; the connection hole at one end of the movable rod 112 for mounting the fastener 114 is a threaded hole, and the fixed rod 111 and the movable rod 112 are threadedly connected and fixed via the fastener 114. When the movable rod 112 is rotated to open the first connection end 110, the seat belt is pulled between the fixed rod 111 and the movable rod 112, and then the movable rod 112 is rotated again and the other ends of the fixed rod 111 and the movable rod 112 are tightened via the fastener 114 to close the first connection end 110, thereby connecting the seat belt connection device 100 to the seat belt.

[0049] As a preferred option, Figure 1 As shown, 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 be moved on the seat belt. This not only facilitates connecting the seat belt connecting device 100 to the connecting portion 200, but also allows the seat belt connecting device 100 to be adjusted to a comfortable position for the passenger on the seat belt, thereby further improving the comfort of the passenger.

[0050] When the seat belt connection device 100 of the present application is not in use, the first connection end 110 remains connected to the seat belt. When in use, after the passenger sits on the seat or safety cushion, the second connection end 120 of the seat belt connection device 100 is fixed to the connection part 200, and the appropriate limiting groove 220 is selected according to the passenger's abdominal size and body shape to fix the second connection end 120, thereby ensuring the passenger's comfort. After use, the second connection end 120 can be removed from the connection part 200.

[0051] As a preferred embodiment, Figure 1As shown, the safety belt connecting device is provided with an elastic member 123 which keeps it away from the connecting portion so as to engage the connecting seat in the limiting groove. Preferably, the elastic member 123 is arranged around the connecting rod 122 or at the bottom of the fixing rod 111 along the direction of the slide 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 an elastic material such as a spring, a spring sheet or a sponge. The elastic member 123 can be sleeved on the connecting rod 122, or the elastic member 123 can be set at the bottom of the fixing rod 111 along the direction of the slide groove 230 by welding, riveting, bolting, screwing, snapping or gluing. When the connecting seat 121 passes through the mounting hole 210 under external force, the elastic member 123 will abut between the connecting part 200 and the fixing rod 111, thereby being compressed. When the external force is removed, the elastic member 123 will return to its original state, so that the connecting seat 121 is engaged in the corresponding limit groove 220 under the action of elastic force, so that the engagement and fixation of the safety belt connection device 100 is more firm, further improving the safety performance.

[0052] As a preferred embodiment, the connecting portion 200 is installed in the middle of the seat or safety cushion, between the legs, and / or at the two front corners of the seat or safety cushion. When a passenger is wearing pants, the seat belt, fastened in accordance with existing technical specifications, can be secured to the middle of the seat or safety cushion, between the legs, near the base of the thighs, or at the two front corners of the seat or safety cushion using the slot-locking seat belt connection mechanism. The seat belt knot located at the abdomen is then secured to the middle of the seat or safety cushion, between the legs, near the base of the thighs, or at the two front corners of the seat or safety cushion. This transfers the pressure of the seat belt on the passenger's abdomen to the thighs, preventing the belt from contracting and compressing the passenger's abdomen and causing discomfort in the event of an accident or braking. When a passenger is wearing a skirt, since it is inconvenient to secure the seat belt in the middle of the seat or safety cushion, between the legs, near the base of the thighs, the seat belt can be secured to the seat or safety cushion, between the legs, near the edge of the cushion, or at the two front corners of the seat or safety cushion, thereby transferring the pressure of the seat belt on the passenger's abdomen to the thighs.

[0053] As a preferred embodiment, the seat belt connection device 100 and the connection part 200 are both made of high-strength metal, alloy, high-strength carbon fiber, high-strength plastic, high-strength nylon, high-strength fiberglass, high-strength ceramic or polymer material, which can improve the structural strength of the card slot locking seat belt connection mechanism of the present application and ensure the safety of passengers.

[0054] Example 2:

[0055] In this embodiment, except for the first connection end 110 of the safety belt connection device 100, other parts are the same as those in the first embodiment. Figure 4As shown, in this embodiment, the fixed rod 111 is a U-shaped structure with first protrusions 116 at both ends. The first protrusions 116 are each provided with a connection hole and a mounting slot. The movable rod 112 is a U-shaped structure with second protrusions 117 at both ends. The second protrusions 117 are each provided with a connection hole. The second protrusions 117 of the movable rod 112 are respectively installed in the mounting slots at both ends of the fixed rod 111. One end of the fixed rod 111 and the movable rod 112 are connected by a rotating pair 113 passing through the connection hole. The other end is detachably connected by a fastener 114 passing through the connection hole so that the movable rod 112 can rotate around one end of the fixed rod 111 to achieve the opening and closing of the first connecting end 110. After the first connecting end 110 is closed, a gap 115 is formed between the fixed rod 111 and the movable rod 112 for the safety belt to pass through, so that the safety belt connection device 100 can move on the safety belt.

[0056] Example 3:

[0057] In this embodiment, except for the first connection end 110 of the safety belt connection device 100, other parts are the same as those in the first embodiment. Figure 5 As shown, 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 a U-shaped structure with third protrusions 118 provided at both ends. The third protrusions 118 are provided with through holes. Both ends of the movable rod 112 are provided with threaded holes. Fasteners 114 such as bolts or screws pass through the through holes on the third protrusions 118 and are threadedly connected to 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 the safety belt connection device 100 needs to be fixed to or removed from the safety belt, the fasteners 114 at both ends can be removed, which facilitates the fixing and removal of the safety belt connection device 100. After the first connection 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 connection device 100 can be moved on the safety belt.

[0058] Example 4:

[0059] In this embodiment, except for the first connection end 110 of the safety belt connection device 100, other parts are the same as those in the first embodiment. Figure 6 As shown, in this embodiment, one end of the fixed rod 111 and the movable rod 112 are rotatably connected by a rotating pair 113, and the other end is provided with a matching external thread and is detachably connected by a threaded fastener 114. The contact surface of the fixed rod 111 and the movable rod 112 is provided with a groove, so that when the first connecting end 110 is closed, a gap 115 is formed between the fixed rod 111 and the movable rod 112 for the safety belt to pass through, so that the safety belt connection device 100 can be moved on the safety belt.

[0060] The above embodiments are intended only to illustrate the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications, or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and should be encompassed by the scope of the claims of the present invention.

Claims

1. A slot-locking safety belt connection mechanism, mounted on a seat or safety cushion, wherein the seat or safety cushion is provided with a safety belt, characterized in that: The slot locking safety belt connection mechanism includes: A safety belt connecting device, comprising a first connecting end for connecting to the safety belt and a second connecting end capable of connecting to a seat or a safety cushion, wherein the second connecting end comprises a connecting seat and a connecting rod securing the second connecting end to the first connecting end, wherein the cross-sectional dimensions of the connecting rod are smaller than the cross-sectional dimensions of the connecting seat; a connecting portion mounted on the seat or safety cushion and configured to connect to the second connecting end; the connecting portion being provided with a slide groove and a mounting hole communicating with the slide groove; a plurality of limiting grooves being provided at the bottom of the slide groove; the sizes of the mounting holes and the limiting grooves being adapted to the sizes of the connecting seat; and the width of the slide groove being adapted to the size of the connecting rod; The length of the connecting rod is greater than the depth of the slide groove. After the connecting seat passes through the mounting hole, the connecting rod slides freely in the slide groove under external force. After the external force is removed, the connecting seat is engaged in the corresponding limit groove under the tightening force of the safety belt.

2. The slot-locking seat belt connection mechanism according to claim 1, 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.

3. The slot-locking seat belt connection mechanism according to claim 2, characterized in that: The diameters of the mounting hole and the limiting groove are larger than the diameter of the connecting seat.

4. The slot-locking safety belt connection mechanism according to claim 3, 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.

5. The slot-locking safety belt connection mechanism according to claim 4, characterized in that: The thickness of the limiting groove is smaller than the thickness of the sliding groove.

6. The slot-locking safety belt connection mechanism according to claim 1, characterized in that: The safety belt connecting device is provided with an elastic member which keeps the connecting seat away from the connecting portion so as to engage the connecting seat in the limiting groove.

7. The slot-locking safety belt connection mechanism according to claim 1, characterized in that: The first connecting end includes a fixed rod and a movable rod that are detachably connected.

8. The slot-locking safety belt connection mechanism according to claim 7, characterized in that: One end of the fixed rod and the movable rod are connected by a rotating pair, and the other end is detachably connected by a fastener.

9. The slot-locking safety belt connection mechanism according to claim 8, characterized in that: A gap is provided between the fixed rod and the movable rod for the safety belt to pass through.

10. The slot-locking safety belt connection mechanism according to claim 7, 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 fasteners.

11. The slot-locking safety belt connection mechanism according to claim 1, characterized in that: The safety belt connecting device and the connecting part are both made of high-strength metal, alloy, high-strength carbon fiber, high-strength plastic, high-strength nylon, high-strength fiberglass, high-strength ceramic or polymer material.

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