Safety belt fixing buckle assembly and vehicle

Abstract

The invention discloses a safety belt fixing buckle assembly and a vehicle. The safety belt fixing buckle assembly comprises a base, the base comprises a first mounting part, and a first limiting part is arranged on the first mounting part; the fixing buckle is mounted on the first mounting part, and the fixing buckle is provided with a second limiting part and a connecting hole suitable for being connected with a safety belt; and the first limiting part is suitable for being jointed with the second limiting part so as to limit the movement of the fixing buckle relative to the first mounting part. According to the safety belt fixing buckle assembly and the vehicle, movement of the fixing buckle is limited by introducing the first limiting part and the second limiting part, stress of the joint of the fixing buckle and the base can be relieved, the risk of connection failure is reduced, the safety belt is reliably fixed, and driving safety is guaranteed. Meanwhile, according to some selectable forms, the device has the characteristic of simplicity and convenience in disassembly and assembly, can effectively reduce the cost, and has a good application prospect.

Description

Technical Field

[0001] The present invention belongs to the technical field of vehicle safety belt structures, and in particular relates to a safety belt fixing buckle assembly. Background Art

[0002] Vehicle seat belts are directly related to the safety of drivers and passengers. In the event of a collision or emergency braking, seat belts can secure drivers and passengers to their seats and reduce the extent of injuries to them. However, if the seat belt buckle is not securely fixed, the fixed end of the seat belt will move with the buckle when the seat belt is pulled, which may weaken the seat belt's ability to secure the driver and passengers. Currently, seat belt buckles are often installed on the vehicle body and / or its ancillary structures by welding. This method has high rigidity and can effectively secure the seat belt buckle. However, the welding method may also cause stress concentration or weld fatigue due to unreasonable structural design or repeated stress on the welding point, which in turn leads to failure of the buckle welding point connection. In addition, the welding method also has the disadvantages of high equipment and labor costs and difficulty in disassembly and replacement. Summary of the Invention

[0003] In order to solve the above technical problems, the present invention provides a seat belt buckle assembly and a vehicle including the seat belt buckle assembly. The seat belt buckle assembly of the present invention has a reliable fixing effect on the seat belt.

[0004] To this end, according to one aspect of the technical concept of the present invention, a seat belt buckle assembly is proposed, comprising: a base, the base comprising a first mounting portion, the first mounting portion being provided with a first limiting portion; a fixing buckle, the fixing buckle being mounted on the first mounting portion, the fixing buckle being provided with a second limiting portion and a connecting hole suitable for connecting a seat belt; wherein the first limiting portion is suitable for engaging the second limiting portion to limit the movement of the fixing buckle relative to the first mounting portion.

[0005] According to the above technical concept, the present invention may further include any one or more of the following optional forms.

[0006] According to some optional forms, the fixing buckle is mounted on the first mounting portion by a threaded fastener or by welding.

[0007] According to some optional forms, the first mounting portion has a first mounting surface, the fixing buckle is mounted on the first mounting portion in contact with the first mounting surface, the first limiting portion is constructed as a first limiting column fixedly set on the first mounting portion, and the second limiting portion is constructed as a first limiting opening set on the fixing buckle, wherein the first limiting column is suitable for engaging in the first limiting opening to limit the sliding of the fixing buckle relative to the first mounting surface.

[0008] According to some optional forms, the first limiting opening is configured as a notch formed on the edge of the fixing buckle.

[0009] According to some optional forms, the first limiting column has a fixed end and a free end, and the first limiting column is fixedly set on the first mounting portion through the fixed end. The free end of the first limiting column is bent and extended to form a first hook portion to clamp the fixing buckle between the first hook portion and the first mounting surface, and limit the fixing buckle from moving in a direction away from the first mounting portion.

[0010] According to some optional forms, the base is a sheet metal component, and the first limiting column and the first mounting portion are formed integrally.

[0011] According to another aspect of the present inventive concept, a vehicle is provided, comprising the seat belt buckle assembly and a second mounting portion, wherein a base of the seat belt buckle assembly is mounted on the second mounting portion.

[0012] According to the above technical concept, the present invention may further include any one or more of the following optional forms.

[0013] According to some optional forms, a third limiting portion is provided on the second mounting portion, and a fourth limiting portion is provided on the base, wherein the fourth limiting portion deviates from the first limiting portion and is adapted to be engaged with the third limiting portion to limit the movement of the base relative to the second mounting portion.

[0014] According to some optional forms, the base is mounted on the second mounting portion by means of threaded fasteners or by welding.

[0015] According to some optional forms, the second mounting portion has a second mounting surface, the base is mounted on the second mounting portion in contact with the second mounting surface, the third limiting portion is constructed as a second limiting column fixedly provided on the second mounting portion, and the fourth limiting portion is constructed as a second limiting opening provided on the base, wherein the second limiting column is suitable for engaging into the second limiting opening to limit the sliding of the base relative to the second mounting surface.

[0016] According to some optional forms, the second limiting opening is configured as a notch formed on the edge of the base.

[0017] According to some optional forms, the second limiting column has a fixed end and a free end, and the second limiting column is fixedly set on the second mounting portion through the fixed end, and the free end of the second limiting column is bent and extended to form a second hook portion to clamp the base between the second hook portion and the second mounting surface, and limit the base from moving in a direction away from the second mounting portion.

[0018] The seatbelt buckle assembly and vehicle of the present invention, by introducing a first limiting portion and a second limiting portion to restrict the movement of the buckle, can reduce the stress at the connection between the buckle and the base, lowering the risk of connection failure, thereby reliably securing the seatbelt and ensuring driving safety. Furthermore, certain optional configurations can facilitate assembly and disassembly, effectively reducing costs and promising application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The features, advantages and other aspects of the various embodiments of the present invention will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings, in which several embodiments of the present invention are shown in an illustrative and non-restrictive manner. In the accompanying drawings, the same reference numerals represent the same or similar parts.

[0020] Figure 1 is a schematic diagram of an exemplary embodiment of a seat belt buckle assembly according to the present invention;

[0021] Figure 2 yes Figure 1 Exploded view of the seat belt buckle assembly shown;

[0022] Figure 3 yes Figure 1 A schematic diagram of the assembly structure of the seat belt fixing buckle assembly assembled on the second mounting portion;

[0023] Figure 4 yes Figure 3 Exploded view of the assembly shown.

[0024] Figure markings: 10-base; 11-first mounting portion; 11A-first mounting surface; 12-first limiting column; 121-first hook; 13-second limiting opening; 14-first mounting through hole; 20-fixing buckle; 21-connecting hole; 22-first limiting opening; 23-second mounting through hole; 30-second mounting portion; 30A-second mounting surface; 31-second limiting column; 311-second hook; 32-third mounting through hole; 41-bolt; 42-nut; B-safety belt; I-safety belt fixing buckle assembly; L-safety belt buckle; S1-first limiting structure; S2-second limiting structure. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0026] It should be noted that if a directional indication is involved in an embodiment of the present invention, the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0027] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0028] Herein, the terms "first", "second", "third" and "fourth" are not used to limit the order of precedence and the number of components, unless otherwise specified.

[0029] In view of the fact that in the prior art, the welding fixing method of the vehicle's seat belt buckle may fail, and there are problems such as high cost and difficulty in disassembly and replacement, the present invention proposes a seat belt buckle assembly and a vehicle and combines some optional implementation methods to solve the above technical problems.

[0030] Figure 1 and Figure 2 A seat belt fastener assembly I according to the present invention is exemplarily shown, comprising a base 10 and a fastener 20. The base 10 comprises a first mounting portion 11, on which the fastener 20 is mounted, forming a first joining point of the fastener 20 on the first mounting portion 11. A seat belt buckle L may also be mounted on the base 10 for insertion of a locking tongue (not shown) on the seat belt B. At the same time, a first limiting portion is provided on the first mounting portion 11, and a second limiting portion is provided on the fastener 20. The first limiting portion can engage with the second limiting portion, thereby forming a first limiting structure S1, and also forming a second joining point of the fastener 20 on the first mounting portion 11. The fastener 20 can be mounted on the mounting portion 11 at the first joining point by means of a threaded fastener. Figure 1 and Figure 2The threaded fasteners shown include, for example, a bolt 41 and a nut 42 that cooperate with each other. The retaining clip 20 and the base 10 are provided with corresponding second mounting holes 23 and first mounting holes 14, respectively. The bolt 41 is sequentially inserted through the second mounting hole 23 and the first mounting hole 14, and the nut 42 is then tightened onto the bolt 41, thereby mounting the retaining clip 20 on the first mounting portion 11. In some cases, the retaining clip 20 may also be mounted to the first mounting portion 11 by welding. The anchor buckle 20 is provided with a connection hole 21 for connecting the fixed end of the seat belt B. When the seat belt B is pulled, the presence of the first and second limiting portions (i.e., the second joint) allows the force acting on the first joint (i.e., the connection between the anchor buckle and the base) to be shared or reduced by the second joint, thereby reducing the risk of connection failure at the first joint. This also restricts movement of the anchor buckle 20 relative to the first mounting portion 11, strengthening the securement of the anchor buckle 20 and thereby ensuring reliable fixation of the fixed end of the seat belt B connected to the anchor buckle 20, thus ensuring the ability of the seat belt B to secure the occupant to the vehicle seat. Even though the anchor buckle 20 is welded to the first mounting portion 11 at the first joint, the second joint reduces the force acting on the first joint, effectively preventing stress concentration and weld fatigue at the first joint, which could lead to connection failure at the anchor buckle 20 weld. It should be understood that since the threaded fastener connection is easy to assemble and disassemble, and at the same time, does not require high professionalism in manpower and equipment, it can effectively reduce costs, making the combination of the threaded fastener installation method and the first limiting structure S1 (the first limiting part and the second limiting part) have a better application prospect.

[0031] It should be understood that the term "restriction" in this article broadly includes restriction, prevention, obstruction and other similar meanings, such as "limiting the movement of the fixing buckle 20 relative to the first mounting part 11" and the "restriction" in the later mentioned "limiting the movement of the base 10 relative to the second mounting part 30"; the term "movement" in this article broadly includes translation and / or rotation in the physical sense, such as "sliding" mentioned below.

[0032] Continue to refer to Figure 1 and Figure 2The first mounting portion 11 has a first mounting surface 11A, and the fixing buckle 20 is mounted on the first mounting portion 11 in contact with the first mounting surface 11A. The first limiting portion is configured as a first limiting post 12 fixedly disposed on the first mounting portion 11 / first mounting surface 11A. The length or extension direction of the first limiting post 12 may be substantially perpendicular to the first mounting surface 11A. The second limiting portion is configured as a first limiting opening 22 provided on the fixing buckle 20. The first limiting post 12 can engage with the first limiting opening 22. The engagement between the first limiting opening 22 and the first limiting post 12 can limit the sliding of the fixing buckle 20 relative to the first mounting surface 11A, thereby limiting the movement of the fixing buckle 20 relative to the first mounting portion 11. In the example shown in the figure, threaded fasteners (bolts 41 and nuts 42) secure the fixing buckle 20 to the first mounting portion 11, forming the aforementioned first joint, while the first limiting post 12 fits within the first limiting opening 22 and engages within the first limiting opening 22, forming the aforementioned second joint. Thus, when the seat belt B is pulled, the first and second joints cooperate and restrict each other, hindering the movement of the retaining buckle 20 relative to the first mounting portion 11 (i.e., hindering the retaining buckle 20 from sliding on the first mounting surface 11A) or the tendency to move. The retaining buckle 20 will not rotate about the bolt 41 / first joint, and the fixed end of the seat belt B is securely fixed. This prevents the retaining ability of the seat belt B from being weakened due to an insecure fixed end of the seat belt B (e.g., the retaining buckle 20 can rotate about the bolt 41, with the fixed end of the seat belt B rotating with the retaining buckle 20). It should be understood that the first limiting opening 22 can be a hole provided in the retaining buckle 20 or a U-shaped notch, for example, formed on the edge of the retaining buckle 20. The first limiting post 12 can be engaged with the first limiting opening 22 by being inserted into or entering the hole or notch.

[0033] In some embodiments, the first limiting column 12 has a fixed end and a free end facing opposite to the fixed end. The fixed end of the first limiting column 12 is fixedly disposed on the first mounting portion 11, and the free end of the first limiting column 12 is bent to extend a first hook portion 121. The extension direction of the first hook portion 121 can be approximately perpendicular to the length direction or extension direction of the first limiting column 12, or can be approximately parallel to the first mounting surface 11A. The first limiting opening 22 is constructed as a U-shaped notch formed on the edge of the fixing buckle 20. During the process of assembling the fixing buckle 20 to the base 10, the fixing buckle 20 can be slid against the first mounting surface 11A to avoid the interference of the first hook portion 121 and move in a direction approximately perpendicular to the length direction (or extension direction) of the first limiting column 12 to engage with the first limiting column 12. At the same time, the first hook 121 extends over the edge of the first limiting opening 22 and is on the surface of the fixing buckle 20, so that after the first limiting column 12 engages with the first limiting opening 22, the first hook 121 can clamp or hold the fixing buckle 20 with the first mounting portion 11 / first mounting surface 11A, preventing the fixing buckle 20 from leaving the first mounting surface 11A of the mounting portion 11, and maintaining contact between the fixing buckle 20 and the first mounting surface 11A. In this way, the beneficial effects are mainly reflected in that, firstly, after the assembly is completed, the first hook portion 121 limits the movement of the fixing buckle 20 in the direction away from the first mounting portion 11 / first mounting surface 11A, thereby enhancing the fixing ability of the second joint point and further fixing the fixed end of the safety belt B; secondly, in the process of assembling the fixing buckle 20 to the base 10, the existence of the first hook portion 121 requires the fixing buckle 20 to slide in contact with the first mounting surface 11A, so as to align and engage the first limiting column 12 and the first limiting opening 22, and the fixing buckle 20 can be installed on the first mounting portion 11A, thereby avoiding the fixing buckle 20 from being skewed relative to the first mounting portion 11 / first mounting surface 11A during the assembly process (for example, one side of the fixing buckle 20 is tilted and does not fit the first mounting surface 11A). It should be understood that if Figure 1 and Figure 2 As shown, the base 10 can be a sheet metal component, and the first limiting post 12 is integrally formed with the base 10 / first mounting portion 11 and extends from the first mounting portion 11 in a bent manner. For example, the first limiting post 12 can extend in a direction substantially perpendicular to the first mounting surface 11A, and a pair of first hooks 121 can symmetrically extend from the first limiting post 12. Alternatively, other suitable components or members can be provided to form the first hooks. Of course, the fixing buckle 20 can also be a sheet metal component.

[0034] As an application of the above-mentioned seat belt fastener assembly 1, a vehicle according to the present invention includes a second mounting portion 30 and the above-mentioned seat belt fastener assembly 1, and the base 10 is mounted on the second mounting portion 30 to form a third joint point of the base 10 / seat belt fastener assembly 1 on the second mounting portion 30. Figure 3 and Figure 4 As shown, the base 10 can be mounted on the second mounting portion 30 via threaded fasteners, creating a third joint. The threaded fasteners shown in the figure include, for example, a bolt 41 and a nut 42 for use together. The fixing buckle 20, the base 10, and the second mounting portion 30 are respectively provided with corresponding second mounting holes 23, first mounting holes 14, and third mounting holes 32. The bolt 41 is sequentially inserted through the second mounting holes 23, first mounting holes 14, and third mounting holes 32, and the nut 42 is tightened onto the bolt 41, thereby mounting the fixing buckle 20 and the base 10 together on the second mounting portion 30. In some cases, the base 10 may also be mounted to the second mounting portion 30 by welding. It should be understood that the second mounting portion 30 can be any suitable component of the vehicle, such as the vehicle floor or seat bracket.

[0035] In some embodiments, a third limiting portion is provided on the second mounting portion 30, and a fourth limiting portion is provided on the base 10. The fourth limiting portion can engage with the third limiting portion to form a second limiting structure S2, which also forms a fourth joint point of the base 10 / safety belt buckle assembly I on the second mounting portion 30. This limits the movement of the base 10 relative to the second mounting portion 30, thereby securing the fixed end of the safety belt B. The fourth limiting portion can be offset from the first limiting portion, and the second limiting structure S2 can be offset from the first limiting structure S1 to avoid interference during assembly.

[0036] Continue to refer to Figure 3 and Figure 4In some embodiments, the second mounting portion 30 has a second mounting surface 30A, and the base 10 (specifically, the first mounting portion 11 on the base 10) is mounted on the second mounting portion 30 in contact with the second mounting surface 30A. The third limiting portion is configured as a second limiting column 31 fixedly provided on the second mounting portion 30 / second mounting surface 30A. The length direction or extension direction of the second limiting column 31 can be substantially perpendicular to the second mounting surface 30A. The fourth limiting portion is configured as a second limiting opening 13 provided on the base 10. The second limiting column 31 can be engaged with the second limiting opening 13. The engagement between the second limiting opening 13 and the second limiting column 31 can limit the sliding of the base 10 relative to the second mounting surface 30A, thereby limiting the movement of the base 10 relative to the second mounting portion 30. In the example shown in the figures, threaded fasteners (bolts 41 and nuts 42) secure the base 10 / first mounting portion 11 to the second mounting portion 30, forming the aforementioned third joint. The second limiting post 31 fits within the second limiting opening 13 and engages within the second limiting opening 13, forming the aforementioned fourth joint. Thus, due to the mutual cooperation and restraining effect of the third and fourth joints, the base 10 / seat belt buckle assembly 1 is prevented from moving relative to the second mounting portion 30 (i.e., from sliding on the second mounting surface 30A). The base 10 / seat belt buckle assembly 1 is prevented from rotating about the bolt 41 / third joint, and the fixed end of the seat belt B is secured relative to the second mounting portion 30. It should be understood that the second limiting opening 13 can be a hole provided in the base 10 or a U-shaped notch, for example, formed on the edge of the base 10. The second limiting post 31 can be inserted into or enter the hole or notch to engage with the second limiting opening 13.

[0037] In some embodiments, the second limiting post 31 has a fixed end and a free end facing opposite the fixed end. The fixed end of the second limiting post 31 is fixedly mounted on the second mounting portion 30, and the free end of the second limiting post 31 is bent and extended to form a second hook portion 311. The extension direction of the second hook portion 311 can be substantially perpendicular to the length or extension direction of the second limiting post 31, or can be substantially parallel to the second mounting surface 30A. The second limiting opening 13 is configured as a U-shaped notch formed on the edge of the base 10. During the assembly of the seat belt buckle assembly 1 to the second mounting portion 30, the base 10 can be slid against the second mounting surface 30A to allow the second limiting opening 13, configured as a notch, to avoid interference from the second hook portion 311 and move in a direction substantially perpendicular to the length (or extension) direction of the second limiting post 31 to engage with the second limiting post 31. At the same time, the second hook 311 extends over the edge of the second limiting opening 13 and is located on the surface of the base 10 (such as the first mounting surface 11A), so that after the second limiting column 31 engages with the second limiting opening 13, the second hook 311 can clamp or hold the base 10 / first mounting portion 11 with the second mounting portion 30 / second mounting surface 30A, preventing the base 10 / first mounting portion 11 from leaving the second mounting surface 30A of the second mounting portion 30, and maintaining contact between the base 10 / first mounting portion 11 and the second mounting surface 30A. In this way, the beneficial effects are mainly reflected in that, firstly, after the assembly is completed, the second hook 311 limits the base 10 / first mounting portion 11 from moving in the direction away from the second mounting portion 30 / second mounting surface 30A, thereby enhancing the fixing ability of the fourth joint point, and then further fixing the base 10 and the fixed end of the safety belt B; secondly, in the process of assembling the base 10 / safety belt fastener assembly I to the second mounting portion 30, the presence of the second hook 311 requires the base 10 / first mounting portion 11 to slide in contact with the second mounting surface 30A, so as to align and engage the second limiting column 31 and the second limiting opening 13, so that the base 10 / first mounting portion 11 can be installed on the second mounting portion 30, thereby avoiding the base 10 / first mounting portion 11 from tilting relative to the second mounting portion 30 / second mounting surface 30A during the assembly process (for example, one side of the base 10 / first mounting portion 11 is tilted and does not fit the second mounting surface 30A). It should be understood that if Figure 3 and Figure 4 As shown, a pair of second hooks 311 may be symmetrically extended from the second limiting column 31 , or other suitable parts or components may be provided to form the second hooks.

[0038] It should be understood that Figures 1 to 4In the illustrated embodiment, the fixing buckle 20 is mounted on the first mounting portion 11 and the base 10 is mounted on the second mounting portion 30, using a set of threaded fasteners (bolts 41 and nuts 42). This is merely a preferred embodiment and is not intended to be limiting. In other embodiments, the fixing buckle 20 is mounted on the first mounting portion 11 and the base 10 is mounted on the second mounting portion 30, and each can be connected using threaded fasteners or welding, etc. It should also be understood that both the base 10 and the fixing buckle 20 can be sheet metal. The first mounting portion 11, first limiting column 12, second limiting opening 13, and first mounting through-hole 14 on the base 10 are all suitable for being stamped together with the base 10. Similarly, the connecting hole 21, first limiting opening 22, and second mounting through-hole 23 on the fixing buckle 20 are all suitable for being stamped together with the fixing buckle 20, thereby simplifying the manufacturing process and reducing costs.

[0039] It should be understood that the above description of the preferred embodiment is relatively detailed and cannot be regarded as limiting the scope of protection of the patent of the present invention. Under the guidance of the present invention, ordinary technicians in this field can also make substitutions or modifications without departing from the scope of protection of the claims of the present invention, which all fall within the scope of protection of the present invention. The scope of protection requested by the present invention shall be based on the attached claims.

Claims

1. A seat belt buckle assembly (I), characterized in that: include: A base (10), the base (10) comprising a first mounting portion (11), the first mounting portion (11) being provided with a first limiting portion; A fixing buckle (20), the fixing buckle (20) being mounted on the first mounting portion (11), the fixing buckle (20) being provided with a second limiting portion and a connecting hole (21) suitable for connecting a safety belt (B); The first limiting portion is adapted to engage with the second limiting portion to limit movement of the fixing buckle (20) relative to the first mounting portion (11).

2. The seat belt buckle assembly (I) according to claim 1, characterized in that: The fixing buckle (20) is mounted on the first mounting portion (11) via a threaded fastener or by welding.

3. The seat belt fastener assembly (I) according to claim 1 or 2, characterized in that: The first mounting portion (11) has a first mounting surface (11A), the fixing buckle (20) is mounted on the first mounting portion (11) in contact with the first mounting surface (11A), the first limiting portion is configured as a first limiting column (12) fixedly arranged on the first mounting portion (11), and the second limiting portion is configured as a first limiting opening (22) arranged on the fixing buckle (20), wherein the first limiting column (12) is suitable for engaging with the first limiting opening (22) to limit the sliding of the fixing buckle (20) relative to the first mounting surface (11A).

4. The seat belt buckle assembly (I) according to claim 3, characterized in that: The first limiting opening (22) is configured as a notch formed on the edge of the fixing buckle (20).

5. The seat belt buckle assembly (I) according to claim 4, characterized in that: The first limiting column (12) has a fixed end and a free end. The first limiting column (12) is fixedly arranged on the first mounting portion (11) through the fixed end. The free end of the first limiting column (12) is bent to extend a first hook portion (121) to clamp the fixing buckle (20) between the first hook portion (121) and the first mounting surface (11A) and limit the fixing buckle (20) from moving in a direction away from the first mounting portion (11).

6. The seat belt fastener assembly (I) according to claim 5, characterized in that: The base (10) is a sheet metal part, and the first limiting column (12) and the first mounting portion (11) are formed integrally.

7. A vehicle, characterized in that: It comprises a safety belt buckle assembly (I) according to any one of claims 1 to 6 and a second mounting portion (30), wherein the base (10) of the safety belt buckle assembly (I) is mounted on the second mounting portion (30).

8. The vehicle according to claim 7, characterized in that A third limiting portion is provided on the second mounting portion (30), and a fourth limiting portion is provided on the base (10), wherein the fourth limiting portion deviates from the first limiting portion and is adapted to be engaged with the third limiting portion to limit the movement of the base (10) relative to the second mounting portion (30).

9. The vehicle according to claim 8, characterized in that The base (10) is mounted on the second mounting portion (30) by means of threaded fasteners or by welding.

10. The vehicle according to claim 8 or 9, characterized in that The second mounting portion (30) has a second mounting surface (30A), the base (10) is mounted on the second mounting portion (30) in contact with the second mounting surface (30A), the third limiting portion is configured as a second limiting column (31) fixedly arranged on the second mounting portion (30), and the fourth limiting portion is configured as a second limiting opening (13) arranged on the base (10), wherein the second limiting column (31) is suitable for engaging with the second limiting opening (13) to limit the sliding of the base (10) relative to the second mounting surface (30A).

11. The vehicle according to claim 10, characterized in that The second limiting opening (13) is configured as a notch formed on the edge of the base (10).

12. The vehicle according to claim 11, characterized in that The second limiting column (31) has a fixed end and a free end. The second limiting column (31) is fixedly arranged on the second mounting portion (30) through the fixed end. The free end of the second limiting column (31) is bent to extend a second hook portion (311) to clamp the base (10) between the second hook portion (311) and the second mounting surface (30A) and limit the base (10) from moving in a direction away from the second mounting portion (30).

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