Safety belt lock catch and vehicle

By designing the fixed seat and movable seat structure of the seat belt lock, the function of elastic parts is used to solve the problem of stacking when the hidden lock is arranged, and the aesthetics and convenience of the seat belt is improved and the convolution phenomenon is improved.

CN223142967UActive Publication Date: 2025-07-25ZHEJIANG LEAPMOTOR TECH CO LTD
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Patent Information

Application Number
CN202422410673.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-30
Publication Date
2025-07-25
Estimated Expiration
2034-09-30

AI Technical Summary

Technical Problem

When fully hidden locking is arranged, the seat belts accumulate in the locking position, which affects the user experience.

Method used

A seat belt lock is designed, including a fixed seat, a movable seat and an elastic member. The movable seat is connected to the fixed seat through an elastic member. When the plug-in interface is not plugged into the seat belt lock tongue, the movable seat is in a first relative position with the fixed seat. When the seat belt lock tongue is plugged into the seat belt lock tongue, the movable seat is in a second relative position under the action of elastic force and lock tongue tension force, and is further away from the fixed seat.

Benefits of technology

Reduce the extension length of the lock when the seat belt is not in use to improve aesthetics and convenience; improve the convolution of the seat belt when it is in use to improve passenger experience.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a safety belt lock catch and a vehicle. The safety belt lock catch comprises a fixed seat, the movable seat is movably connected to the fixed seat and is provided with a plugging port; one end of the elastic piece is connected to the fixed seat, the other end of the elastic piece is connected to the movable seat, and elastic force facing the fixed seat is provided for the movable seat; when the safety belt spring bolt is not inserted into the insertion opening, the movable seat and the fixed seat are located at a first relative position under the action of elastic force; when the safety belt spring bolt is inserted into the insertion opening, the movable seat and the fixed seat are located at a second relative position under the action of the tension and the elastic force of the safety belt spring bolt; the movable seat is farther away from the fixed seat when located at the second relative position than when located at the first relative position. Through the structure, the extension length of the safety belt lock catch can be reduced when the safety belt is in an unused state, the phenomenon that the safety belt is convolved at the position of the safety belt lock tongue can be improved when the safety belt is in a used state, and the use experience of passengers is improved.
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Description

Technical Field

[0001] This application belongs to the technical field of automobiles, and particularly relates to a seat belt buckle and a vehicle. Background Art

[0002] As more and more vehicle models pursue a completely flat state of the carriage after the rear seat backrest is fully reclined, the mainstream market has begun to adopt a completely hidden buckle arrangement, that is, the seat belt buckle is flush with the seat cushion surface, so that there is no interference between the seat belt buckle and the seat backrest after the rear seat is fully reclined. However, in the process of using the completely hidden buckle arrangement, due to the arrangement form of the seat belt buckle perpendicular to the seat cushion, the seat belt accumulates at the buckle position, thus affecting the use experience. Therefore, how to improve the accumulation phenomenon of the seat belt at the buckle position when the completely hidden buckle arrangement is adopted is a technical problem that needs to be solved urgently at present. Summary of the Utility Model

[0003] This application provides a seat belt buckle and a vehicle to solve the technical problem of avoiding the accumulation at the buckle position when the completely hidden buckle arrangement is adopted.

[0004] To solve the above technical problem, a technical solution adopted in this application is: a seat belt buckle, including: a fixed seat; a movable seat movably connected to the fixed seat and provided with an insertion opening; an elastic member, one end of which is connected to the fixed seat and the other end is connected to the movable seat, and provides an elastic force for the movable seat towards the fixed seat; wherein, when the insertion opening is not inserted with a seat belt tongue, the movable seat is in a first relative position with the fixed seat under the action of the elastic force; when the insertion opening is inserted with the seat belt tongue, the movable seat is in a second relative position with the fixed seat under the action of the pulling force of the seat belt tongue and the elastic force; when the movable seat is in the second relative position, it is arranged farther away from the fixed seat than when it is in the first relative position.

[0005] According to an embodiment of this application, the elastic member includes: a spring; a first mounting post provided on the movable seat; a second mounting post provided on the fixed seat, and one end of the spring is connected to the first mounting post and the other end is connected to the second mounting post.

[0006] According to an embodiment of this application, a limiting portion is formed on the movable seat, and the limiting portion is slidably connected to the second mounting post for limiting the relative movement between the second mounting post and the movable seat.

[0007] According to one embodiment of the present application, the limiting portion includes a limiting hole, the second mounting column passes through the limiting hole and is connected to the fixing seat, the limiting hole is arranged in a long strip shape, and the extension direction of the limiting hole is the same as the arrangement direction of the first mounting column and the second mounting column.

[0008] According to an embodiment of the present application, a limiting ring is further sleeved on the second mounting column, and the limiting ring is located on a side of the limiting hole away from the fixing seat.

[0009] According to one embodiment of the present application, the movable seat includes: a main body, the plug interface is formed on the main body; a connecting part, the connecting part is connected to the main body, the connecting part is provided with the first mounting column and the limiting part, and the limiting part is located between the first mounting column and the second mounting column.

[0010] According to one embodiment of the present application, the seat belt buckle further includes an axle pin, and the second mounting column and the movable seat are rotatably connected via the axle pin.

[0011] According to one embodiment of the present application, the fixed seat includes a connected bending portion and an extending portion, the extending portion is provided with the second mounting column, and is movably connected to the movable seat.

[0012] In order to solve the above technical problems, another technical solution adopted in the present application is: a vehicle, comprising any of the seat belt buckles described above.

[0013] According to one embodiment of the present application, the vehicle further includes a seat belt lock tongue, a seat belt and a seat cushion, wherein the seat cushion is provided with a mounting groove, the fixed seat is provided in the mounting groove, one end of the seat belt is connected to the seat cushion, and the other end is connected to the seat belt lock tongue; wherein when the movable seat and the fixed seat are in a first relative position, the movable seat is located in the mounting groove; and when the movable seat and the fixed seat are in a second relative position, the movable seat is located outside the mounting groove.

[0014] The beneficial effects of the present application are as follows: The seat belt buckle of the present application includes a fixed seat; a movable seat movably connected to the fixed seat and provided with an insertion interface; an elastic member having one end connected to the fixed seat and the other end connected to the movable seat, and providing an elastic force for the movable seat toward the fixed seat. Wherein, when the seat belt tongue is not inserted into the insertion interface, the movable seat is in a first relative position with the fixed seat under the action of the elastic force; when the seat belt tongue is inserted into the insertion interface, the movable seat is in a second relative position with the fixed seat under the action of the pulling force of the seat belt tongue and the elastic force; when the movable seat is in the second relative position, it is arranged farther away from the fixed seat than when it is in the first relative position. Through the above structure, not only can the movable seat be in the first relative position closer to the fixed seat when the seat belt is in an unused state, that is, when the insertion interface of the movable seat does not insert the seat belt tongue, so as to reduce the extended length of the seat belt buckle. For example, it can improve the aesthetics of the seat cushion on which the fixed seat is installed and the convenience of reclining the seat cushion backrest, but also when the seat belt is in a used state, that is, when the insertion interface of the movable seat inserts the seat belt tongue, the movable seat can be in the second relative position farther away from the fixed seat, which can improve the phenomenon that the seat belt is convolution at the position of the seat belt tongue and enhance the user experience of passengers. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings, where:

[0016] Figure 1 is a front view structural schematic diagram of an embodiment of the seat belt buckle of the present application;

[0017] Figure 2 is a three-dimensional structural schematic diagram of an embodiment of the seat belt buckle of the present application;

[0018] Figure 3 is a three-dimensional structural schematic diagram of an embodiment of the seat cushion of the vehicle of the present application;

[0019] Figure 4 is a sectional structural schematic diagram of the seat belt buckle of the present application installed in a vehicle and in the second relative position;

[0020] Figure 5 is a side view structural schematic diagram of an embodiment of the seat belt buckle of the present application;

[0021] Figure 6 is Figure 5 an enlarged structural schematic diagram of A in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the specific embodiments of the present application in detail with reference to the accompanying drawings. It can be understood that the specific embodiments described herein are only for explaining the present application and not for limiting the present application. Additionally, it should be noted that for the sake of convenience of description, only the parts related to the present application rather than all the structures are shown in the drawings. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0023] Reference to "embodiment" in this text means that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment each time, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0024] In the description of the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" can explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more, unless otherwise specifically defined.

[0025] In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection capable of mutual communication; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0026] The seat belt buckle in the present application can be applied to related structures such as vehicles, rail transit, or industrial equipment. In the present application, the case where the seat belt buckle is applied to a vehicle will be used as an example for illustration. Among them, the vehicle includes a seat belt tongue, a seat belt, a seat belt buckle, and a seat cushion. An installation groove is provided on the seat cushion, and a fixed seat is arranged in the installation groove. One end of the seat belt is connected to the seat cushion, and the other end is connected to the seat belt tongue.

[0027] Please refer to Figures 1 to 4 , Figure 1 which is a front view structural schematic diagram of an embodiment of the seat belt buckle of the present application; Figure 2It is a schematic three-dimensional structure diagram of an embodiment of a seat belt buckle according to the present application; Figure 3 It is a schematic three-dimensional structure diagram of a seat cushion of an embodiment of a vehicle according to the present application; Figure 4 It is a schematic cross-sectional structure diagram of the seat belt buckle installed in the vehicle and in the second relative position.

[0028] An embodiment of the present application provides a seat belt buckle 10. Among them, the seat belt buckle 10 includes a fixed seat 11, a movable seat 12 and an elastic member 13. The movable seat 12 is movably connected to the fixed seat 11, and an insertion opening (not shown in the figure) is provided on the movable seat 12; one end of the elastic member 13 is connected to the fixed seat 11, and the other end is connected to the movable seat 12, and provides an elastic force for the movable seat 12 toward the fixed seat 11; wherein, when the insertion opening is not inserted with the seat belt tongue 21, the movable seat 12 is in the first relative position X with the fixed seat 11 under the action of the elastic force; when the insertion opening is inserted with the seat belt tongue 21, the movable seat 12 is in the second relative position Y with the fixed seat 11 under the action of the pulling force of the seat belt tongue 21 and the elastic force; when the movable seat 12 is in the second relative position Y, it is arranged farther away from the fixed seat 11 than when it is in the first relative position X.

[0029] It can be seen from the above structure that when the insertion opening is not inserted with the seat belt tongue 21, the length of the elastic member 13 is less than the natural length of the elastic member 13, and provides an elastic force for the movable seat 12 toward the fixed seat 11; the movable seat 12 is not subjected to the pulling force of the seat belt tongue 21, the movable seat 12 is subjected to the elastic force of the elastic member 13, and the movable seat 12 and the fixed seat 11 are in the first relative position X; when the seat belt tongue 21 is inserted into the insertion opening, at the same time, the passenger will wind the seat belt and generate a certain pulling force, and this pulling force will overcome the elastic force generated by the elastic member 13, so that the movable seat 12 is pulled out to the second relative position Y with the fixed seat 11 under the action of the pulling force of the seat belt tongue 21.

[0030] Through the above structure, not only can the movable seat 12 be in the first relative position X closer to the fixed seat 11 when the seat belt is in the unused state, that is, the insertion opening of the movable seat 12 is not inserted with the seat belt tongue 21, so as to reduce the extension length of the seat belt buckle 10. For example, it can improve the aesthetics of the seat cushion for installing the fixed seat 11 and the convenience of laying down the seat cushion backrest, but also when the seat belt is in the use state, that is, the insertion opening of the movable seat 12 is inserted with the seat belt tongue 21, the movable seat 12 can be in the second relative position Y farther away from the fixed seat 11, which can improve the phenomenon that the seat belt generates convolution at the position of the seat belt tongue 21 and improve the use experience of passengers.

[0031] Please continue to refer to Figure 1 、 Figure 2 and Figures 5 to 6 , Figure 5It is a schematic side view of an embodiment of the seat belt buckle of the present application; Figure 6 It is Figure 5 an enlarged schematic view of A in

[0032] Among them, in an embodiment of the present application, the elastic member 13 includes a spring 131, a first mounting post 132, and a second mounting post 133. Among them, the first mounting post 132 is disposed on the movable seat 12, the second mounting post 133 is disposed on the fixed seat 11, one end of the spring 131 is connected to the first mounting post 132, and the other end is connected to the second mounting post 133. Specifically, when the seat belt tongue 21 is inserted into the insertion opening, when the passenger winds the seat belt, a certain pulling force will be generated, and this pulling force is greater than the elastic force generated by the spring 131. The movable seat 12 moves away from the fixed seat 11 against the pulling force at the first relative position X. The first mounting post 132 drives the spring 131 to elongate toward the second mounting post 133 side, so that the movable seat 12 and the fixed seat 11 are in the second relative position Y. The first mounting post 132 and the second mounting post 133 can realize the stretching or compression of the spring 131, so that the process of stretching or compression of the entire spring 131 can be more stable, thereby improving the reliability of the entire seat belt buckle 10.

[0033] In an embodiment of the present application, a limiting portion 122 is formed on the movable seat 12. The limiting portion 122 is movably connected to the second mounting post 133 and is used to limit the relative movement between the second mounting post 133 and the movable seat 12, thereby being able to improve the situation where the spring 131 is damaged due to the large pulling force generated when the passenger winds the seat belt, resulting in the maximum deformation of the spring 131 and affecting the service life of the seat belt buckle 10. At the same time, the limiting portion 122 can realize the fixed stroke of the seat belt buckle 10 and prevent the risk of deviation and detachment of the seat belt buckle 10 during the telescopic process. And by forming the limiting portion 122 on the movable seat 12, the design is simple and convenient for operation.

[0034] In an embodiment of the present application, the limiting portion 122 includes a limiting hole 123, and the second mounting column 133 passes through the limiting hole 123 to connect with the fixed seat 11. The limiting hole 123 is arranged in an elongated strip shape, and the extending direction of the limiting hole 123 is the same as the arrangement direction of the first mounting column 132 and the second mounting column 133. The limiting hole 123 is arranged in an elongated strip shape, which can provide a movement space for the second mounting column 133, thereby realizing the extension and contraction of the spring 131; the limiting hole 123 can limit the spring 131 from stretching or compressing along the arrangement direction of the first mounting column 132 and the second mounting column 133, thereby preventing the spring 131 from running off or falling off during the stretching or compression process, thereby affecting the relative position of the movable seat 12 and the fixed seat 11. Therefore, the setting of the limiting hole 123, on the one hand, can limit the moving position of the spring 131, prevent the spring 131 from deflecting and falling off, and improve the reliability of the seat belt buckle 10. On the other hand, the limiting hole 123 can also effectively prevent the spring 131 from being damaged due to excessive tension, thereby ensuring the service life of the seat belt buckle 10.

[0035] In one embodiment of the present application, a limiting ring 124 is also sleeved on the second mounting column 133, and the limiting ring 124 is located on the side of the limiting hole 123 away from the fixed seat 11. The limiting ring 124 can play a good limiting role on the movable seat 12 and the second mounting column 133, thereby preventing the second mounting column 133 from being separated from the limiting hole 123 during the use of the seat belt buckle 10, causing the movable seat 12 to be separated from the fixed seat 11, affecting the normal use of the seat belt buckle 10. Therefore, the limiting ring 124 can improve the connection reliability of the second mounting column 133 to the fixed seat 11 and the movable seat 12, thereby improving the service life of the seat belt buckle 10.

[0036] In one embodiment of the present application, the movable seat 12 includes a main body 125 and a connecting portion 126. The plug-in interface is formed on the main body 125, the connecting portion 126 is connected to the main body 125, and the connecting portion 126 is provided with a first mounting column 132 and a limiting portion 122, and the limiting portion 122 is located between the first mounting column 132 and the second mounting column 133. The main body 125 can provide space for the formation of the plug-in interface, and the connecting portion 126 can not only play a good connection role between the fixed seat 11 and the main body 125, but also provide space for the formation of the limiting portion 122 and the setting of the first mounting column 132.

[0037] Furthermore, the seat belt buckle 10 further includes an axle pin 127, and the second mounting column 133 and the movable seat 12 are rotatably connected via the axle pin 127. The axle pin 127 enables the rotatable connection between the movable seat 12 and the fixed seat 11, so that when the seat belt lock tongue 21 is inserted into the insertion port, the convolution of the seat belt can be avoided to a greater extent.

[0038] In an embodiment of the present application, the fixed seat 11 includes a bent portion 111 and an extension portion 112 connected to each other. The extension portion 112 is provided with a second mounting post 133 and is movably connected to the movable seat 12. The bent portion 111 can increase the contact area between the fixed seat 11 and the vehicle, which can not only facilitate the installation of the seat belt buckle 10 on the vehicle, but also enhance the connection stability between the seat belt buckle 10 and the vehicle. The arrangement of the extension portion 112 can provide space for the arrangement of the second mounting post 133, and can also increase the contact connection with the movable seat 12, thereby improving the connection stability with the movable seat 12.

[0039] Please continue to refer to Figures 1 to 4 , another embodiment of the present application provides a vehicle. The vehicle includes any one of the above-mentioned seat belt buckles 10.

[0040] Further, in another embodiment of the present application, the vehicle further includes a seat belt tongue 21, a seat belt, and a seat cushion 20. Among them, an installation groove is provided on the seat cushion 20, and the fixed seat 11 is arranged in the installation groove. One end of the seat belt is connected to the seat cushion 20, and the other end is connected to the seat belt tongue 21. When the movable seat 12 and the fixed seat 11 are in the first relative position X, the movable seat 12 is located in the installation groove. When the movable seat 12 and the fixed seat 11 are in the second relative position Y, the movable seat 12 is located outside the installation groove. In the present application, the seat belt buckle 10 can be hidden when the seat belt buckle 10 is in an unused state, thereby ensuring the aesthetics of the seat cushion 20 and the convenience of reclining the backrest of the seat cushion 20 in the non-use state. When the seat belt buckle 10 is in a use state, the movable seat 12 is located outside the installation groove, which can well avoid the convolution effect of the seat belt during use and improve the use experience of passengers. In addition, since structures such as the elastic member 13 and the limiting portion 122 are all designed and arranged as internal connection structures of the seat belt buckle 10, their design is simple and the installation is convenient. It will not only increase the weight of the whole vehicle, but also improve the convenience of production personnel.

[0041] It should be noted that terms such as "horizontal" and "vertical" do not require components to be absolutely horizontal or vertical, but can be slightly inclined; terms such as "parallel" and "perpendicular" do not mean that the fittings are absolutely parallel or perpendicular to each other, but can have a certain angular deviation. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. In addition, the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is habitually placed during use. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0042] It can be understood that the meaning of "a plurality of" herein is at least two, such as two, three, etc., unless there are specific restrictive explanations. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products or devices. The term "and / or" is merely a description of the associated relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0043] The above are only the implementation manners of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. A seat belt buckle, characterized in that, include: Fixed seat; A movable seat, movably connected to the fixed seat, and provided with a plug interface; An elastic member, one end of which is connected to the fixed seat, the other end of which is connected to the movable seat, and provides an elastic force for the movable seat to move toward the fixed seat; Among them, when the plug-in interface is not connected to the seat belt lock tongue, the movable seat is in a first relative position with the fixed seat under the action of the elastic force; when the plug-in interface is connected to the seat belt lock tongue, the movable seat is in a second relative position with the fixed seat under the action of the seat belt lock tongue tension and the elastic force; when the movable seat is in the second relative position, it is arranged farther away from the fixed seat than when it is in the first relative position.

2. The seat belt buckle according to claim 1, characterized in that, The elastic member comprises: spring; A first mounting column, disposed on the movable seat; The second mounting post is arranged on the fixing seat, one end of the spring is connected to the first mounting post, and the other end is connected to the second mounting post.

3. The seat belt buckle according to claim 2, characterized in that, A limiting portion is formed on the movable seat, and the limiting portion is slidably connected to the second mounting column and is used to limit the relative movement between the second mounting column and the movable seat.

4. The seat belt buckle according to claim 3, characterized in that, The limiting portion includes a limiting hole, the second mounting column passes through the limiting hole and is connected to the fixing seat, the limiting hole is arranged in an elongated strip shape, and the extending direction of the limiting hole is the same as the arrangement direction of the first mounting column and the second mounting column.

5. The seat belt buckle according to claim 4, characterized in that, A limiting ring is also sleeved on the second mounting column, and the limiting ring is located on a side of the limiting hole away from the fixing seat.

6. The seat belt buckle according to claim 3, characterized in that, The movable seat comprises: A main body, wherein the plug interface is formed on the main body; A connecting portion, wherein the connecting portion is connected to the main body portion, and the connecting portion is provided with the first mounting column and the limiting portion, and the limiting portion is located between the first mounting column and the second mounting column.

7. The seat belt buckle according to claim 2, characterized in that, The safety belt buckle also includes an axle pin, and the second mounting column and the movable seat are rotatably connected via the axle pin.

8. The seat belt buckle according to claim 2, characterized in that, The fixed seat comprises a connected bending portion and an extending portion, the extending portion is provided with the second mounting column and is movably connected to the movable seat.

9. A vehicle, characterized in that, It comprises the seat belt buckle as claimed in any one of claims 1 to 8.

10. The vehicle according to claim 9, characterized in that, The vehicle further comprises a seat belt lock tongue, a seat belt and a seat cushion, wherein the seat cushion is provided with a mounting groove, the fixing seat is arranged in the mounting groove, one end of the seat belt is connected to the seat cushion, and the other end is connected to the seat belt lock tongue; Wherein, when the movable seat and the fixed seat are in a first relative position, the movable seat is located in the installation groove; when the movable seat and the fixed seat are in a second relative position, the movable seat is located outside the installation groove.