Safety belt lower end piece assembly, safety belt assembly and vehicle

Abstract

The utility model relates to the technical field of vehicles, and provides a safety belt lower end piece assembly, a safety belt assembly and a vehicle. The safety belt lower end piece assembly can comprise a connecting support and a safety belt lower end piece, the connecting support comprises a side plate, and the side plate is provided with a first bolt hole, a first limiting hole and a second limiting hole; the safety belt lower end piece comprises a first limiting part, an end piece body and a second limiting part, the end piece body is located on the inner side of the side plate and provided with a second bolt hole, the first limiting part is opposite to the first limiting hole and extends into the first limiting hole, the second limiting part comprises a connecting section and a clamping section, and the clamping section is connected with the free end of the connecting section. The cross sectional area of the connecting section is smaller than that of the clamping section; the second limiting hole comprises a first hole section, the width of the clamping section is larger than that of the first hole section, the connecting section penetrates into the first hole section, and the clamping section is located on the outer side of the side plate. According to the safety belt lower end piece assembly provided by the embodiment, the working difficulty of assembly personnel can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a seat belt lower end piece assembly, a seat belt assembly, and a vehicle. Background Technology

[0002] Vehicle seat belts are designed to reduce injury by limiting the forward and lateral movement of occupants during a collision. They effectively prevent occupants from being ejected from the vehicle or suffering severe impacts inside the vehicle.

[0003] Vehicle seat belt systems mainly consist of seat belt webbing and a retractor, with three-point seat belts being the most common type. A three-point seat belt is a safety device that secures the chest, abdomen, and pelvis of the human body to the seat. A three-point seat belt includes a retractor, a lower seat belt tab, and a seat belt insert. The seat belt insert is located between the retractor and the lower seat belt tab, which is connected to the vehicle body via fastening bolts.

[0004] The existing seat belt lower end piece (see relevant patent CN215590682U) is a limiting structure with hooks at both the front and rear. When installing the seat belt lower end piece into the front seat frame, the seat belt lower end piece needs to be pre-hooked into the preset slot or preset hole of the front seat frame. When the bolt tightening direction is from the inside to the outside, the seat needs to be adjusted to the most forward and highest position to tighten it. At this time, due to the tension of the webbing, the seat belt lower end piece will rotate backward around the front hook, and the rear hook is at risk of coming out of the seat frame, making it difficult to tighten the bolt of the seat belt lower end piece. Utility Model Content

[0005] In order to solve the above-mentioned technical problems, or at least partially solve the above-mentioned technical problems, the present invention provides a seat belt lower end piece assembly, a seat belt assembly, and a vehicle.

[0006] In a first aspect, this application provides a seat belt lower end piece assembly, which may include: a connecting bracket including a side plate, the plane of which intersects with the vehicle coordinate system XY plane, the side plate having a first bolt hole, a first limiting hole and a second limiting hole, the first limiting hole being located on the side of the first bolt hole in the positive X direction of the vehicle coordinate system, and the second limiting hole being located on the side of the first bolt hole in the negative X direction of the vehicle coordinate system; a seat belt lower end piece including a first limiting part, an end piece body and a second limiting part connected in sequence, the end piece body being located inside the side plate, the end piece body having a second bolt hole, the second bolt hole being connected to the first limiting part and the second limiting part in the XY plane of the vehicle coordinate system XY plane ... With bolt holes facing each other, the first limiting part is opposite to the first limiting hole and extends into the first limiting hole. The second limiting part includes a connecting section and a locking section. One end of the connecting section is connected to the end piece body, and the other end extends toward the second limiting hole. The locking section is connected to the free end of the connecting section. The cross-sectional area of ​​the connecting section is smaller than the cross-sectional area of ​​the locking section. The second limiting hole includes a first hole section. The width of the locking section is greater than the width of the first hole section. The connecting section passes through the first hole section. The locking section is located on the outside of the side plate. When the lower end piece of the seat belt is in the installation position, the locking section abuts against the outer surface of the side plate.

[0007] It should be noted that since the width of the locking section is greater than the width of the first hole section, when the connecting section passes through the first hole section, the locking section cannot pass through the first hole section. This provides a limit in the Y direction of the vehicle coordinate system for the lower end piece of the seat belt, preventing the second limiting part from coming out of the second limiting hole due to seat adjustment or webbing tightening. This reduces the difficulty of bolt tightening and the workload of assembly workers.

[0008] In some embodiments of this application, the second limiting hole further includes a second hole segment connected to the first hole segment, the second hole segment being located on the side of the first hole segment in the negative Z direction of the vehicle coordinate system, and the locking segment being able to pass through the second hole segment.

[0009] In some embodiments of this application, the single-sided gap between the connecting segment and the first hole segment is greater than or equal to 2 mm and less than or equal to 3 mm.

[0010] In some embodiments of this application, the first limiting portion includes an extension and a bending portion. The extension passes through the first limiting hole, one end of the extension is connected to the end piece body, and the other end is connected to the bending portion. The orthographic projection of the bending portion onto the plane where the first limiting hole is located is at least partially outside the first limiting hole.

[0011] In some embodiments of this application, the first limiting hole includes a third hole segment and a fourth hole segment connected together. The third hole segment is located on the side of the fourth hole segment in the negative Z direction of the vehicle coordinate system. The width of the third hole segment is greater than the width of the fourth hole segment. The first limiting part passes through the connecting bracket through the third hole segment and can pass through the fourth hole segment to be limited and connected with the connecting bracket.

[0012] In some embodiments of this application, the end piece body, the first limiting portion, and the second limiting portion are integrally formed.

[0013] In some embodiments of this application, the connecting bracket includes a base plate connected to the side plate, the plane of the base plate intersects the plane of the side plate, and the base plate is connected to the vehicle frame.

[0014] In some embodiments of this application, the end piece body is provided with webbing holes for threading webbing.

[0015] Secondly, this application also provides a seat belt assembly, which includes a seat belt lower end piece assembly as described in any of the above embodiments; a retractor; and a webbing, one end of which is connected to the retractor and the other end of which is connected to the seat belt lower end piece assembly.

[0016] The technical effects of any design scheme in the second aspect can be seen in the technical effects of different design methods in the first aspect, and will not be repeated here.

[0017] Thirdly, this application also provides a vehicle, including the seat belt assembly and frame described in the second aspect above, wherein the seat belt assembly is mounted on the frame.

[0018] The technical effects of any design scheme in the third aspect can be found in the technical effects of different design methods in the second aspect, and will not be repeated here. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of a seatbelt assembly provided for some embodiments of this application;

[0022] Figure 2 for Figure 1 The diagram shows the mounting of the assembly with the lower end piece.

[0023] Figure 3 for Figure 1 An exploded view of the lower end piece assembly of the seat belt shown in the figure;

[0024] Figure 4 for Figure 3 A schematic diagram of the connecting bracket shown;

[0025] Figure 5 for Figure 3 The diagram shows the lower end piece of the seat belt.

[0026] Figure label:

[0027] 1000, Seatbelt Assembly;

[0028] 100. Seat belt lower end piece assembly;

[0029] 110. Connecting bracket; 111. First bolt hole; 112. First limiting hole; 1121. Third hole section; 1122. Fourth hole section; 113. Second limiting hole; 1131. First hole section; 1132. Second hole section; 1101. Side plate; 1102. Base plate;

[0030] 120. Lower end piece of seat belt; 121. End piece body; 1211. Webbing hole; 1212. Second bolt hole; 122. First limiting part; 1221. Extension section; 1222. Bending part; 123. Second limiting part; 1231. Connecting section; 1232. Locking section;

[0031] 130. Bolts;

[0032] 200, winding device; 300, webbing; 2000, guide rail. Detailed Implementation

[0033] To better understand the above-mentioned objectives, features, and advantages of this utility model, the solution of this utility model will be further described below. It should be noted that, unless otherwise specified, the embodiments of this utility model and the features thereof can be combined with each other.

[0034] Many specific details are set forth in the following description in order to provide a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of the present invention, and not all embodiments.

[0035] Vehicle seat belts are designed to reduce injury by limiting the forward and lateral movement of occupants during a collision. They effectively prevent occupants from being ejected from the vehicle or suffering severe impacts inside the vehicle.

[0036] Vehicle seat belt systems mainly consist of seat belt webbing and a retractor, with three-point seat belts being the most common type. A three-point seat belt is a safety device that secures the chest, abdomen, and pelvis of the human body to the seat. A three-point seat belt includes a retractor, a lower seat belt tab, and a seat belt insert. The seat belt insert is located between the retractor and the lower seat belt tab, which is connected to the vehicle body via fastening bolts.

[0037] The existing seat belt lower piece has a limiting structure with hooks at both the front and rear. When installing the seat belt lower piece into the front seat frame, it is necessary to pre-hook the seat belt lower piece into the preset slot or preset hole of the front seat frame. When the bolt tightening direction is from the inside out (taking the driver's seat as an example, from the inside out means the direction of the seat is towards the driver's door), the seat needs to be adjusted to the most forward and highest position to tighten it. At this time, due to the tension of the webbing, the seat belt lower piece will rotate backward around the front hook, and there is a risk that the rear hook will come out of the seat frame, making it difficult to tighten the seat belt lower piece bolt.

[0038] To address the aforementioned technical problems, this application provides a vehicle that may include a frame and a seatbelt assembly, wherein the seatbelt assembly is mounted on the frame. Specifically, the frame includes a seat bracket, and the seatbelt assembly is mounted on the seat bracket.

[0039] Please see Figure 1 and Figure 2 , Figure 1 The above is a schematic diagram of a seatbelt assembly provided in some embodiments of this application. Figure 2 for Figure 1 The diagram shows a lower seat belt tab assembly. The seat belt assembly 1000 may include a retractor 200, a webbing 300, and a lower seat belt tab assembly 100, with one end of the webbing 300 connected to the retractor 200 and the other end connected to the lower seat belt tab 120.

[0040] For ease of description, the following uses the vehicle coordinate system as a reference. When the vehicle is stationary on a level road, the X-axis is parallel to the ground and points in front of the vehicle, the Z-axis points upward, and the Y-axis points to the driver's left.

[0041] Please see Figures 1 to 3 , Figure 3 for Figure 1The diagram shows an exploded view of the lower seatbelt tab assembly. Taking the lower seatbelt tab assembly 100 of the front driver's seatbelt assembly 1000 as an example, the lower seatbelt tab assembly 100 may include a connecting bracket 110 and a lower seatbelt tab 120. Of course, other seatbelt assemblies can also have the same structure.

[0042] Please see Figures 1 to 4 , Figure 4 for Figure 3 The diagram shows a connecting bracket. The connecting bracket 110 may include a base plate 1102 and a side plate 1101. The base plate 1102 is mounted on the slide rail 2000 of the front driver's seat. The plane of the base plate 1102 is parallel to the horizontal plane. The plane of the side plate 1101 intersects the plane of the base plate 1102. Specifically, the plane of the side plate 1101 is perpendicular to the plane of the base plate 1102, that is, the side plate 1101 is parallel to a vertical plane perpendicular to the horizontal plane. Here, "perpendicular" means relatively perpendicular. The angle between the plane of the side plate 1101 and the plane of the base plate 1102 is greater than or equal to 80° and less than or equal to 100°.

[0043] The side plate 1101 is provided with a first bolt hole 111, a first limiting hole 112 and a second limiting hole 113. The first bolt hole 111 is located in the middle of the side plate 1101. The first limiting hole 112 is located on the side of the first bolt hole 111 in the positive X direction of the vehicle coordinate system, that is, the first limiting hole 112 is located in front of the first bolt hole 111. The second limiting hole 113 is located on the side of the first bolt hole 111 in the negative X direction of the vehicle coordinate system, that is, the second limiting hole 113 is located behind the first bolt hole 111.

[0044] Please see Figures 1 to 5 , Figure 5 for Figure 3 The diagram shows the lower end piece of the seat belt. The lower end piece 120 of the seat belt is located inside the side panel 1101. The lower end piece 120 of the seat belt may include an end piece body 121, a first limiting part 122 and a second limiting part 123. The first limiting part 122 is connected to the front side of the end piece body 121, and the second limiting part 123 is connected to the rear side of the end piece body 121. The end piece body 121, the first limiting part 122 and the second limiting part 123 are integrally formed.

[0045] The end piece body 121 is provided with a webbing hole 1211 and a second bolt hole 1212. The webbing hole 1211 is located above the second bolt hole 1212 and is used to thread the webbing 300 through it. The second bolt hole 1212 is opposite to the first bolt hole 111 and is used to fix the bolts 130 of the lower end piece 120 of the seat belt and the connecting bracket 110. The bolts 130 can pass through the second bolt hole 1212 and the first bolt hole 111 in sequence to connect the lower end piece 120 of the seat belt and the connecting bracket 110.

[0046] The first limiting part 122 is opposite to the first limiting hole 112 and extends into the first limiting hole 112. The second limiting part 123 is opposite to the second limiting hole 113. The second limiting part 123 includes a connecting section 1231 and a locking section 1232. One end of the connecting section 1231 is connected to the end piece body 121, and the other end extends toward the second limiting hole 113. The locking section 1232 is connected to the free end of the connecting section 1231. The cross-sectional area of ​​the connecting section 1231 is smaller than the cross-sectional area of ​​the locking section 1232.

[0047] The second limiting hole 113 includes a first hole segment 1131, a connecting segment 1231 passing through the first hole segment 1131, and the width of the locking segment 1232 is greater than the width of the first hole segment 1131 (wherein, the width of the first hole segment 1131 is...). Figure 3 (Dimensions in the direction indicated by the double-headed arrow in the solid line). The connecting section 1231 passes through the first hole section 1131, and the locking section 1232 is located outside the side plate 1101. When the lower end piece 120 of the seat belt is in the installation position (e.g., ...). Figure 2 When the lower end piece 120 of the seat belt is in the position shown, the lower end piece 120 of the seat belt is subjected to the tension of the webbing 300, and the locking section 1232 abuts against the outer surface of the side plate 1101 to prevent the lower end piece 120 of the seat belt from falling off.

[0048] It should be noted that since the width of the locking section 1232 is greater than the width of the first hole section 1131, when the connecting section 1231 passes through the first hole section 1131, the locking section 1232 cannot pass through the first hole section 1131. This provides a limit in the Y direction of the vehicle coordinate system for the lower end piece 120 of the seat belt, preventing the second limiting part 123 from coming out of the second limiting hole 113 due to seat adjustment or webbing 300 tightening. This reduces the difficulty of tightening the bolt 130 and reduces the workload of assembly workers.

[0049] In some embodiments of this application, the second limiting hole 113 further includes a second hole segment 1132 connected to the first hole segment 1131. The second hole segment 1132 is located on the side of the first hole segment 1131 in the negative Z direction of the vehicle coordinate system. The locking segment 1232 can pass through the second hole segment 1132, thereby enabling the assembly of the second limiting part 123 through the second hole segment 1132.

[0050] Specifically, the assembler first passes the locking section 1232 through the second hole section 1132 through the side plate 1101, so that the locking section 1232 and the end piece body 121 are located on both sides of the side plate 1101 respectively. Then, under the pull of the webbing 300, the lower end piece 120 of the seat belt is lifted upward, so that the connecting section 1231 passes through the first hole section 1131, completing the pre-positioning between the lower end piece 120 of the seat belt and the connecting bracket 110.

[0051] Please refer to Figure 2 and Figure 3 When bolts 130 are needed to connect the connecting bracket 110 to the lower end piece 120 of the seat belt, the driver's seat is moved upward and forward to make room for the installation of bolts 130. During this process, the lower end piece 120 of the seat belt will rotate at a certain angle around the first limiting part 122 as the rotation center. At this time, the second limiting part 123 will move downward a certain distance. Throughout the process, the second limiting part 123 is located in the first hole section 1131. The locking section 1232 abuts against the side plate 1101 around the first hole section 1131 to prevent the second limiting part 123 from coming out of the second limiting hole 113. This facilitates the installation of bolts 130 by the assembly personnel and reduces the workload of the assembly personnel.

[0052] In the specific implementation process, the second limiting hole 113 can be formed as a "T" shaped hole with an inverted cross-section, the second hole segment 1132 is formed as the wider part of the "T" shaped hole, and the first hole segment 1131 is formed as the narrower part of the "T" shaped hole.

[0053] The second limiting part 123 can be formed into a "T" shape, the locking section 1232 is formed into the wider part of the "T" shape, and the connecting section 1231 is formed into the narrower part of the "T" shape.

[0054] Please refer to the following during the specific implementation process. Figure 4 The second limiting hole 113 can be tilted at a certain angle according to the actual position of the connecting bracket 110 to meet the installation requirements.

[0055] Furthermore, the single-sided gap between the connecting segment 1231 and the first hole segment 1131 is greater than or equal to 2mm and less than or equal to 3mm.

[0056] In the specific implementation process, the single-sided gap between the connecting section 1231 and the first hole section 1131 can be 2mm, 2.2mm, 2.5mm, 2.8mm or 3.0mm.

[0057] It is understandable that the single-sided gap between the connecting segment 1231 and the first hole segment 1131 is within the above range. On the one hand, this ensures that the connecting segment 1231 can pass through the first hole segment 1131, reducing the impact of processing errors on assembly. On the other hand, it prevents the first limiting part 122 from rotating during the movement of the first hole segment 1131, reducing the risk of the first limiting part 122 coming out of the first limiting hole 112.

[0058] In some embodiments of this application, the first limiting portion 122 includes an extension 1221 and a bending portion 1222. The extension 1221 passes through the first limiting hole 112. One end of the extension 1221 is connected to the end piece body 121, and the other end is connected to the bending portion 1222. The orthographic projection of the bending portion 1222 onto the plane containing the first limiting hole 112 is at least partially outside the first limiting hole 112. Thus, by providing the bending portion 1222, a Y-direction limiting can be provided between the first limiting portion 122 and the side plate 1101, preventing the first limiting portion 122 from dislodging from the first limiting hole 112.

[0059] Specifically, the first limiting part 122 can be formed as a hook structure and hung on the first limiting hole 112.

[0060] In some embodiments of this application, the first limiting hole 112 may include a third hole segment 1121 and a fourth hole segment 1122. The third hole segment 1121 is located on the side of the fourth hole segment 1122 in the negative Z direction of the vehicle coordinate system. The width of the third hole segment 1121 is (wherein, the width of the third hole segment 1121 is...). Figure 3 The dimension in the direction indicated by the double-headed arrow in the virtual image is greater than the width of the fourth hole segment 1122 (where the width of the fourth hole segment 1122 is...). Figure 3 (The dimension in the direction indicated by the double-headed arrow in the virtual image) allows the first limiting part 122 to pass through the fourth hole segment 1122.

[0061] It should be noted that during the pre-assembly process, the first limiting part 122 can be inserted into the third hole section 1121 and the second limiting part 123 can be inserted into the second hole section 1132. Then, the lower end piece 120 of the seat belt can be lifted upward so that the first limiting part 122 is inserted into the fourth hole section 1122 and the second limiting part 123 is inserted into the first hole section 1131.

[0062] Understandably, on the one hand, the width of the third hole segment 1121 is relatively large, which can reduce assembly precision and reduce the workload of assembly personnel. On the other hand, the width of the fourth hole segment 1122 is relatively small, which can better limit the movement of the first limiting part 122 relative to the first limiting hole 112 and improve the stability of the connection between the lower end piece 120 of the seat belt and the connector.

[0063] In some other embodiments of this application, the first limiting hole 112 may be formed as a "T"-shaped hole with an inverted cross-section, and the first limiting part 122 may be formed as a "T"-shaped structure.

[0064] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0065] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0066] In the description of the embodiments of this utility model, the term "and / or" refers to and covers any and all possible combinations of one or more of the associated listed items. The term "and / or" describes an association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Additionally, the character " / " in this utility model generally indicates that the preceding and following related objects have an "or" relationship.

[0067] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, "linking" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "Fixed connection" refers to a connection where the relative positional relationship remains unchanged after the connection. Furthermore, the directional terms mentioned in the embodiments of this utility model, such as "inner" and "outer," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this utility model, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0068] In the description of embodiments of this utility model, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0069] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A seatbelt lower end piece assembly, characterized in that, include: The connecting bracket includes a side plate, the plane of which intersects with the XY plane of the vehicle coordinate system. The side plate is provided with a first bolt hole, a first limiting hole and a second limiting hole. The first limiting hole is located on the side of the first bolt hole in the positive X direction of the vehicle coordinate system, and the second limiting hole is located on the side of the first bolt hole in the negative X direction of the vehicle coordinate system. The lower end piece of the seat belt includes a first limiting part, an end piece body, and a second limiting part connected in sequence. The end piece body is located inside the side plate and has a second bolt hole opposite to the first bolt hole. The first limiting part is opposite to the first limiting hole and extends into the first limiting hole. The second limiting part includes a connecting section and a locking section. One end of the connecting section is connected to the end piece body, and the other end extends toward the second limiting hole. The locking section is connected to the free end of the connecting section. The cross-sectional area of ​​the connecting section is smaller than the cross-sectional area of ​​the locking section. The second limiting hole includes a first hole segment, the width of the locking segment is greater than the width of the first hole segment, the connecting segment passes through the first hole segment, the locking segment is located on the outside of the side plate, and when the lower end piece of the seat belt is in the installation position, the locking segment abuts against the outer surface of the side plate.

2. The seat belt lower end piece assembly according to claim 1, characterized in that, The second limiting hole also includes a second hole segment connected to the first hole segment. The second hole segment is located on the side of the first hole segment in the negative Z direction of the vehicle coordinate system. The locking segment can pass through the second hole segment and is located on the outside of the side plate.

3. The seat belt lower end piece assembly according to claim 1, characterized in that, The single-sided gap between the connecting segment and the first hole segment is greater than or equal to 2mm and less than or equal to 3mm.

4. The seat belt lower end piece assembly according to claim 1, characterized in that, The first limiting portion includes an extension section and a bending portion. The extension section passes through the first limiting hole. One end of the extension section is connected to the end piece body, and the other end is connected to the bending portion. The orthographic projection of the bending portion onto the plane where the first limiting hole is located is at least partially outside the first limiting hole.

5. The seat belt lower end piece assembly according to claim 1, characterized in that, The first limiting hole includes a third hole segment and a fourth hole segment connected together. The third hole segment is located on the side of the fourth hole segment in the negative Z direction of the vehicle coordinate system. The width of the third hole segment is greater than the width of the fourth hole segment. The first limiting part passes through the third hole segment through the connecting bracket and can pass through the fourth hole segment to be limited and connected with the connecting bracket.

6. The seat belt lower end piece assembly according to claim 1, characterized in that, The end piece body, the first limiting part, and the second limiting part are integrally formed.

7. The seat belt lower end piece assembly according to claim 1, characterized in that, The connecting bracket includes a base plate connected to the side plate, the plane of which the base plate intersects with the plane of which the side plate is located, and the base plate is connected to the vehicle frame.

8. The seat belt lower end piece assembly according to claim 1, characterized in that, The end piece body is provided with webbing holes for threading webbing.

9. A seatbelt assembly, characterized in that, include: Seatbelt lower end piece assembly as claimed in any one of claims 1-8; Retractor; The webbing has one end connected to the retractor and the other end connected to the lower end piece assembly of the seat belt.

10. A vehicle, characterized in that, include: The seatbelt assembly as claimed in claim 9; The vehicle frame, on which the seat belt assembly is mounted.

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