Lock bolt and vehicle

Abstract

The utility model relates to the technical field of connecting pieces, in particular to an anti-loosening bolt and a vehicle, and the anti-loosening bolt comprises a rod body, and a placing groove is formed in the rod body in the length direction of the rod body. And the nut is arranged at one end of the rod body. The clamping blocks are assembled in the containing grooves in a sliding mode in the direction perpendicular to the length direction of the rod body. And the elastic piece is arranged in the placing groove, and the two ends of the elastic piece are connected with the clamping block and the inner wall of the placing groove correspondingly. The rod body is provided with the placing groove, and the slidable clamping block and the elastic piece are arranged, so that an anti-loosening mechanism that the clamping block retracts inwards when the nut is tightened and the clamping block rebounds to an original position to stop the nut or the bolt from loosening after the nut is loosened is realized.

Description

Technical Field

[0001] This application relates to the field of connector technology, and in particular to an anti-loosening bolt and a vehicle. Background Technology

[0002] In the field of fastener technology, bolt anti-loosening technology has always been a key focus. Currently, bolt anti-loosening technologies on the market are mainly divided into three types: friction anti-loosening, mechanical anti-loosening, and permanent anti-loosening.

[0003] Friction locking is the most common method of preventing loosening, primarily relying on increasing the friction between the contact surfaces to achieve the desired effect. This type of technology often uses spring washers, double nuts, etc. However, this method requires additional washers, nuts, and other accessories, increasing cost and installation complexity. More importantly, under significant impact or vibration, this method is prone to loosening, leading to connection failure.

[0004] Mechanical anti-loosening measures use mechanical structures to prevent bolts from loosening. For example, devices such as anti-push rods or thrust wires are used to restrict the movement of bolts or nuts. While this method improves connection reliability to some extent, it also requires additional steps, such as installing anti-push rods or thrust wires, which not only affects assembly efficiency but also increases installation difficulty.

[0005] Permanent locking is a more thorough method of preventing loosening. It typically uses techniques such as spot welding, riveting, and bonding to firmly connect the bolts and nuts. This method ensures the connection is less prone to loosening and offers good reliability. However, it also has some drawbacks. For example, it requires additional welding, riveting, and gluing operations, which not only increases production costs but may also damage the materials of the connecting parts. Furthermore, permanent locking presents significant inconvenience should the connection need to be disassembled or replaced. Utility Model Content

[0006] This utility model provides an anti-loosening bolt and a vehicle to solve the problems of existing bolt anti-loosening technologies, such as the need for additional accessories or operations, unreliable anti-loosening effect, or impact on assembly efficiency.

[0007] To address the aforementioned problems, the first aspect of this utility model discloses an anti-loosening bolt, comprising:

[0008] A rod body, wherein a mounting groove is provided on the rod body along the length direction of the rod body;

[0009] A nut is provided at one end of the rod body;

[0010] At least one locking block is slidably fitted into the mounting slot in a direction perpendicular to the length of the rod.

[0011] An elastic element is disposed inside the mounting groove, and both ends of the elastic element are respectively connected to the locking block and the inner wall of the mounting groove.

[0012] Optionally, the mounting slot includes a first part and a second part, the width of the first part being smaller than the width of the second part, and the card block includes a first block and a second block, the widths of the first block and the second block corresponding to the widths of the first part and the second part, respectively.

[0013] Optionally, the mounting slot further includes a third portion located on the side of the second portion away from the first portion, and the width of the third portion is smaller than the width of the second portion, with at least a portion of the elastic element located inside the third portion.

[0014] Optionally, the first block has an inclined surface, and the orientation of the inclined surface is opposite to that of the nut.

[0015] Optionally, in the relaxed state of the elastic element, a portion of the inclined surface is located inside the placement groove.

[0016] Optionally, multiple card blocks and elastic elements are provided, and the card blocks and elastic elements correspond one-to-one, with the elastic element being integrally formed with the card block.

[0017] Optionally, both the elastic element and the locking block are made of stainless steel.

[0018] Optionally, a receiving groove is provided on the rod body at one end of the mounting groove near the nut. The receiving groove is connected to the mounting groove. The width of the receiving groove is greater than the width of the second block of the card block, and a stop block is provided in the receiving groove.

[0019] Optionally, the anti-loosening bolt further includes a nut that matches the thread of the rod body, the nut being screwed from the end of the rod body away from the nut to the end of the rod body where the nut is located.

[0020] A second aspect of this application provides a vehicle including a first connector, a second connector abutting against the first connector, an anti-loosening bolt as provided in the first aspect of the embodiments of this application, and a nut.

[0021] The anti-loosening bolt has its shank passing through the first connector and the second connector, and the nut of the anti-loosening bolt abuts against the first connector.

[0022] The nut is fitted onto the rod body, with one side of the nut abutting against the second connecting member and the other side abutting against the locking block of the anti-loosening bolt.

[0023] The embodiments of this utility model have the following advantages:

[0024] 1. By setting a mounting groove on the rod body and equipping it with a sliding locking block and elastic element, an anti-loosening mechanism is realized, which prevents the nut or bolt from loosening when the nut is tightened and when the nut passes through axially.

[0025] 2. The cooperation between the locking block and the elastic element ensures the reliability and stability of the bolt connection, avoiding connection failure when subjected to large impact forces or vibrations.

[0026] 3. Compared with traditional bolt anti-loosening technology, this utility model does not require additional accessories such as washers and nuts, nor does it require welding, riveting, or gluing operations, thus reducing costs and installation complexity. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a partial cross-sectional view of an anti-loosening bolt according to an embodiment of this application. Figure 1 ;

[0029] Figure 2 This is a partial cross-sectional view of an anti-loosening bolt according to an embodiment of this application. Figure 2 ;

[0030] Figure 3 yes Figure 2 Cross-sectional view at point AA;

[0031] Figure 4 This is a schematic diagram of a locking block structure for an anti-loosening bolt according to an embodiment of this application;

[0032] Figure 5 This is a cross-sectional view of the rod, locking block, and elastic element of an anti-loosening bolt according to an embodiment of this application;

[0033] Figure 6 This is a schematic diagram of the structure of an anti-loosening bolt according to an embodiment of this application;

[0034] Figure 7This is a schematic cross-sectional view of an anti-loosening bolt according to an embodiment of this application. Figure 1 ;

[0035] Figure 8 This is a schematic cross-sectional view of an anti-loosening bolt according to an embodiment of this application. Figure 2 ;

[0036] Explanation of reference numerals in the attached drawings: rod 1, mounting groove 11, first part 111, second part 112, third part 113, nut 2, nut 3, locking block 4, first block 41, second block 42, inclined surface 43, elastic element 5, stop block 6. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] like Figure 1 As shown, the first aspect of this application discloses an anti-loosening bolt, comprising:

[0039] A rod body 1, wherein a mounting groove 11 is provided on the rod body 1 along the length direction of the rod body 1;

[0040] Nut 2, the nut 2 is disposed at one end of the rod body 1, and the nut 2 is integrally disposed with the rod body 1;

[0041] At least one locking block 4 is slidably fitted inside the mounting slot 11 in a direction perpendicular to the length direction of the rod 1;

[0042] The elastic element 5 is disposed inside the mounting groove 11, and both ends of the elastic element 5 are respectively connected to the locking block 4 and the inner wall of the mounting groove 11.

[0043] In some embodiments, refer to Figure 6 As shown, the anti-loosening bolt may also include a nut 3, which is threadedly matched with the rod body 1, and the nut 3 can be screwed from the end of the rod body 1 away from the nut 2 to the end of the rod body 1 near the nut 2.

[0044] The rod 1 is the main load-bearing component of the anti-loosening bolt, providing the basic structure and strength of the bolt to ensure it can withstand the expected load. The nut 2 is located at one end of the rod 1 and its main function is to cooperate with the rod 1 and the nut 3 to complete the connection and tightening. The nut 3 is threaded onto the rod 1 and is a key component in the connector, used to tightly connect two or more parts together. The rod 1, the nut 2, and the nut 3 together constitute the basic functional fastener of the bolt.

[0045] The mounting groove 11 is formed on the rod 1 and is arranged along the length of the rod 1. Its main function is to accommodate the locking block 4 and the elastic element 5, and to allow the locking block 4 and the elastic element 5 to be positioned at any length position on the rod 1. At the same time, this design allows the locking block 4 to slide within the groove, that is, it can be hidden inside the rod 1 or protrude from the surface of the rod 1, providing the necessary support for the anti-loosening function.

[0046] When the elastic element 5 is relaxed, a portion of the locking block 4 is exposed in the placement groove 11. When the locking block 4 is subjected to force and moves into the placement groove 11, the elastic element 5 is compressed, causing the elastic element 5 to generate elastic force. When the locking block 4 is not subjected to force, the locking block 4 will return to its initial position under the elastic force of the elastic element 5.

[0047] Thus, through its sliding assembly within the mounting groove 11, when the anti-loosening bolt is used and the nut 3 is tightened on the rod 1, the nut 3 will cause the locking block 4 to move towards the mounting groove 11 as it passes the position of the locking block 4. After the nut 3 passes the position of the locking block 4, the locking block 4 will spring back to its original position under the action of the elastic element 5. At this time, the locking block 4 will protrude from the mounting groove 11, thereby preventing the nut 3 or bolt from moving axially outward and playing an anti-loosening role.

[0048] The elastic element 5 can be a spring, a rubber body, or the like. In this embodiment, the elastic element 5 is a spring, with one end of the spring contacting the locking block 4 and the other end of the spring contacting the inner wall of the mounting groove 11.

[0049] The locking block 4 and the elastic element 5 work together to prevent loosening in the anti-loosening bolt. Through their cooperation and coordination, the reliability and stability of the bolt connection are achieved.

[0050] like Figures 2-3As shown, specifically, the mounting slot 11 includes a first part 111 and a second part 112. The width of the first part 111 (referring to the dimension of the first part 111 along the first direction, wherein the first direction is perpendicular to the length direction of the rod 1 and perpendicular to the sliding direction of the locking block 4, and the width of each component in the following text also refers to the dimension of the component in the first direction) is smaller than the width of the second part 112. The locking block 4 includes a first block 41 and a second block 42, and the widths of the first block 41 and the second block 42 correspond to the widths of the first part 111 and the second part 112, respectively.

[0051] The first portion 111 of the mounting slot 11 is the part of the mounting slot 11 closer to the opening, and the second portion 112 of the mounting slot 11 is the inner part of the mounting slot 11. The width of the first portion 111 of the mounting slot 11 is smaller than the width of the second portion 112. This design prevents the locking block 4 from easily disengaging from the mounting slot 11 and avoids the situation where the locking block 4 is completely moved out of the mounting slot 11, thus ensuring the effectiveness of the anti-loosening bolt.

[0052] like Figures 4-5 As shown, the widths of the first block 41 and the second block 42 of the locking block 4 correspond to the widths of the first portion 111 and the second portion 112 of the mounting slot 11, respectively. This precise fit ensures the stability and firmness of the locking block 4 within the mounting slot 11, preventing it from shaking or falling off when subjected to external forces. Furthermore, the first portion 111 and the second portion 112 of the mounting slot 11 form a step, which also prevents the locking block 4 from completely sliding out of the mounting slot 11.

[0053] By precisely designing the shape and size of the locking block 4 and the mounting slot 11, it can be ensured that they can maintain stable structural strength when subjected to external forces, thereby improving the reliability and durability of the entire anti-loosening bolt.

[0054] Furthermore, referring to Figure 5 As shown, the placement groove 11 further includes a third part 113, which is located on the side of the second part 112 away from the first part 111, and the width of the third part 113 is smaller than the width of the second part 112. At least a portion of the elastic member 5 is located inside the third part 113.

[0055] The third part 113 provides a dedicated positioning space for the elastic element 5, ensuring that the elastic element 5 can be stably installed in the mounting groove 11 and will not shift or fail due to bolt vibration or external force. The width of the third part 113 is smaller than that of the second part 112. This design helps to limit the lateral movement of the elastic element 5, allowing it to better exert its elastic effect under pressure, while ensuring the stability and reliability of the locking block 4 during the sliding process.

[0056] The elastic element 5 is disposed inside the third part 113. When the elastic element 5 is compressed to its limit, the step between the third part 113 and the second part 112 can prevent the locking block 4 from continuing to press down, thereby preventing the elastic element 5 from being over-compressed and damaged.

[0057] In one embodiment, reference is made to... Figure 4 As shown, the first block 41 has an inclined surface 43, and the orientation of the inclined surface 43 is opposite to that of the nut 2.

[0058] The inclined surface 43 faces away from the nut 2, i.e., towards the direction when the nut 3 is not tightened. The inclined surface 43 of the first block 41 is designed such that the distance from the edge of the inclined surface near the center of the rod to the center of the rod is less than half the nominal diameter of the mating nut; the distance from the edge of the inclined surface away from the center of the rod to the center of the rod is greater than half the nominal diameter of the mating nut. This allows the inner surface of the nut 3 to gradually and smoothly press against the inclined surface 43 during the tightening process, thereby causing the locking block 4 to retract radially inward.

[0059] This design reduces the resistance when tightening the nut 3 and makes the compression process of the locking block 4 smoother. After the nut 3 passes axially through the locking block, the design of the inclined surface 43 allows the locking block 4 to more easily spring back to its original position under the elastic force of the elastic element 5. This allows the back side of the first block 41 of the locking block 4, away from the inclined surface 43, to abut against the top surface of the nut 3, effectively preventing the nut 3 or bolt from moving axially outward. Simultaneously, after the nut 3 is tightened, the locking block 4, located inside the nut 3, springs back under the elastic force of the elastic element 5 and abuts against the internal thread of the nut 3, preventing the nut 3 from moving even without rotating it.

[0060] The inclined surface 43 not only improves the compression efficiency of the locking block 4 during the tightening process of the nut 3, but also enhances its rebound effect and anti-loosening ability after the nut 3 loosens.

[0061] The design of the inclined surface 43 also has a certain degree of adaptability, enabling it to accommodate nuts 3 of different sizes to a certain extent. Due to the presence of the inclined surface 43, the locking block 4 can undergo a certain deformation when squeezed by the nut 3, thus more flexibly cooperating with nuts 3 of different sizes. That is, whether the nut 3 is larger or smaller, it can press the locking block 4 through the inclined surface 43, allowing the locking block 4 to retract into the mounting groove 11, ensuring the effectiveness and reliability of the anti-loosening bolt in various application scenarios.

[0062] Furthermore, in the relaxed state of the elastic member 5, a portion of the inclined surface 43 is located inside the placement groove 11.

[0063] In this way, when the nut 3 is tightened, it will definitely contact the inclined surface 43 when it comes into contact with the locking block 4, thus ensuring that the nut 3 will not get stuck. This arrangement of the inclined surface 43 makes the sliding of the locking block 4 in the mounting groove 11 smoother, and can adapt to nuts 3 of different sizes and different tightening degrees, improving the applicability and reliability of the anti-loosening bolt.

[0064] In one embodiment, reference is made to... Figure 1 As shown, multiple card blocks 4 and multiple elastic elements 5 are provided, and the card blocks 4 and the elastic elements 5 correspond one-to-one. The elastic elements 5 are integrally formed with the card blocks 4.

[0065] The integrated design means that the elastic element 5 and the locking block 4 are integrated into a single unit during manufacturing, reducing errors and the possibility of loosening during assembly, thereby enhancing the structural stability of the entire anti-loosening bolt. It also simplifies the assembly process, as the elastic element 5 no longer needs to be installed separately, reducing assembly steps and time, and improving assembly efficiency.

[0066] The integrated elastic element 5 and the locking block 4 work together more effectively, ensuring that the locking block 4 receives a uniform elastic force when the nut 3 is tightened. This allows the nut 3 to more effectively spring back to the anti-loosening position after loosening, improving the anti-loosening performance. The integrated elastic element 5 and the locking block 4 also reduce the risk of loosening and damage due to long-term vibration or impact, thereby enhancing the overall durability of the anti-loosening bolt.

[0067] In one embodiment, when the elastic element 5 is a spring or other metal material, both the elastic element 5 and the locking block 4 are made of stainless steel.

[0068] Stainless steel is a high-strength, corrosion-resistant alloy material that can withstand significant mechanical stress and environmental corrosion. Therefore, the use of stainless steel in the elastic element 5 and the locking block 4 ensures that the anti-loosening bolt maintains stable performance in harsh working environments.

[0069] Stainless steel has a certain degree of elasticity, allowing it to deform and return to its original shape after being subjected to external force. This is crucial for the elastic element 5, as it needs to be compressed when the nut 3 is tightened and quickly spring back to its original position after the nut 3 loosens, thus preventing the nut from becoming loose.

[0070] Stainless steel possesses excellent wear resistance and fatigue resistance, enabling it to maintain stable performance over a long period without easily being damaged. Therefore, the use of stainless steel in the elastic element 5 and the locking block 4 can extend the service life of the anti-loosening bolts and reduce the frequency of replacement and maintenance.

[0071] In one embodiment, the elastic element 5 is an air spring.

[0072] Air springs possess excellent nonlinear elastic characteristics, meaning their stiffness is not constant but varies with the load. This characteristic allows air springs to better adapt to different load conditions, providing a smoother elastic response and effectively limiting amplitude to prevent resonance and impact. The stiffness of an air spring can be easily adjusted by changing the volume of the air chamber or the internal pressure. This adjustability provides designers with greater flexibility to optimize spring performance according to specific application requirements. In contrast, the stiffness of traditional springs is usually fixed and difficult to adjust in this way.

[0073] Air springs are relatively inexpensive to manufacture and easy to maintain and replace. They are also typically made from environmentally friendly materials, meeting sustainability requirements. Furthermore, because air springs can be adjusted and optimized to meet specific needs, they often reduce energy consumption and operating costs in practical applications.

[0074] In one embodiment, a receiving groove is provided on the rod body 1 at one end of the mounting groove 11 near the nut 2. The width of the receiving groove is greater than the width of the second block 42 of the locking block 4, and a stop block 6 is provided in the receiving groove.

[0075] In this embodiment, the placement groove 11 extends from one end connected to the receiving groove to the end of the rod 1 away from the nut 2, and the end of the placement groove 11 away from the nut 2 is closed, so the locking block 4 cannot be disengaged from the end of the placement groove 11 away from the nut 2.

[0076] When inserting the locking block 4 and the elastic element 5 into the mounting slot 11, the special shape design of the mounting slot 11 prevents the locking block 4 and the elastic element 5 from being directly inserted. Therefore, this embodiment provides a receiving slot. Specifically, since the receiving slot is connected to the mounting slot 11 and the width of the receiving slot is greater than the width of the second block 42 of the locking block 4, the locking block 4 and the elastic element 5 can be inserted into the mounting slot 11 from the position of the receiving slot when assembling them, making the installation of the locking block 4 and the elastic element 5 more convenient.

[0077] Meanwhile, a stop block 6 is provided in the receiving groove 11, and the stop block 6 abuts against the locking block 4 to prevent the locking block 4 from shaking or flipping in the placement groove 11, which would reduce or disable the function of the locking block 4.

[0078] The second aspect of this application provides a vehicle, the vehicle including a first connector 7, a second connector 8, and the anti-loosening bolts and nuts described in the first aspect of the embodiments of this application.

[0079] Specifically, refer to Figure 7 and Figure 8 As shown, the first connecting member 7 and the second connecting member 8 abut against each other, and corresponding through holes (not shown in the figure) are provided on the first connecting member 7 and the second connecting member 8. The rod 1 of the anti-loosening bolt can pass through the through hole, and the nut 2 of the anti-loosening bolt needs to be tightly pressed against the first connecting member 7. Then, the nut 3 is screwed in from the other end of the rod 1, and gradually passes through the various locking blocks 4 on the rod 1. Finally, one side of the nut 3 is tightly pressed against the second connecting member 8; at the same time, the side of the nut away from the second connecting member 8 abuts against the locking block 4 on the rod 1. That is, the nut 3 is restricted to the position of the rod 1 by the locking block 1. In this way, the locking block 4 on the rod 1 can prevent the nut 3 from coming off the rod 1, thereby making the connection between the first connecting member 7 and the second connecting member 8 more secure.

[0080] Understandably, when multiple locking blocks 4 are provided, the nut 3 will push the locking block 4 located inside it into the placement slot 11, and the nut 3 will be limited by the locking block 4 closest to it, such as... Figure 8 As shown.

[0081] In practical applications, the first connector 7 can be a component that needs to be assembled on the vehicle, and the second connector 8 can be a sheet metal part of the vehicle; of course, the anti-loosening bolt can also be used for connection in other locations on the vehicle.

[0082] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0083] It should also be noted that, in this document, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the present invention 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, and therefore should not be construed as a limitation of the present invention. Furthermore, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations, nor should they be construed as indicating or implying relative importance. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device 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 terminal device. In the absence of further restrictions, an element defined by the phrase "includes a..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes the element.

[0084] The technical solutions provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand this application, and the content of this specification should not be construed as a limitation of this application. Furthermore, for those skilled in the art, there will be different forms of changes in the specific implementation methods and application scope based on this application. It is neither necessary nor possible to exhaustively list all implementation methods here, and obvious changes or modifications derived therefrom are still within the protection scope of this application.

Claims

1. An anti-loosening bolt, characterized in that, include: A rod (1) is provided with a mounting groove (11) along the length direction of the rod (1); Nut (2), said nut (2) is disposed at one end of said rod (1); At least one locking block (4) is slidably fitted inside the mounting slot (11) in a direction perpendicular to the length direction of the rod (1); An elastic element (5) is disposed inside the mounting groove (11), and both ends of the elastic element (5) are respectively connected to the card block (4) and the inner wall of the mounting groove (11).

2. The anti-loosening bolt according to claim 1, characterized in that, The mounting slot (11) includes a first part (111) and a second part (112), the width of the first part (111) is smaller than the width of the second part (112), and the card block (4) includes a first block (41) and a second block (42), the widths of the first block (41) and the second block (42) correspond to the widths of the first part (111) and the second part (112), respectively.

3. The anti-loosening bolt according to claim 2, characterized in that, The placement slot (11) further includes a third part (113), which is located on the side of the second part (112) away from the first part (111), and the width of the third part (113) is smaller than the width of the second part (112), and at least a portion of the elastic member (5) is located inside the third part (113).

4. The anti-loosening bolt according to claim 2, characterized in that, The first block (41) has an inclined surface (43), and the orientation of the inclined surface (43) is opposite to that of the nut (2).

5. The anti-loosening bolt according to claim 3, characterized in that, When the elastic element (5) is in a relaxed state, a portion of the inclined surface (43) is located inside the placement groove (11).

6. The anti-loosening bolt according to claim 1, characterized in that, Multiple card blocks (4) and elastic elements (5) are provided, and the card blocks (4) and elastic elements (5) correspond one-to-one. The elastic elements (5) are integrally provided with the card blocks (4).

7. The anti-loosening bolt according to claim 6, characterized in that, Both the elastic element (5) and the locking block (4) are made of stainless steel.

8. The anti-loosening bolt according to claim 2, characterized in that, The rod (1) has a receiving groove at one end of the mounting groove (11) near the nut (2). The receiving groove is connected to the mounting groove (11). The width of the receiving groove is greater than the width of the second block (42) of the card block (4). A stop block (6) is provided in the receiving groove.

9. The anti-loosening bolt according to any one of claims 1-8, characterized in that, The anti-loosening bolt also includes a nut (3) that is threadedly matched with the rod (1), and the nut (3) can be screwed from the end of the rod (1) away from the nut (2) to the end of the rod (1) where the nut (2) is located.

10. A vehicle, characterized in that, It includes a first connector (7), a second connector (8) that abuts against the first connector (7), an anti-loosening bolt as described in any one of claims 1-8, and a nut (3); The rod (1) of the anti-loosening bolt passes through the first connector (7) and the second connector (8), and the nut (2) of the anti-loosening bolt abuts against the first connector (7); The nut (3) is sleeved on the rod body, and one side of the nut (3) abuts against the second connector (8), and the other side abuts against the locking block (4) of the anti-loosening bolt.

Images