Towing hook assembly and vehicle
By designing the base structure in the tow hook assembly, the coordination of the limit part of the tow hook body and the locking rod and the elastic part, the problem of easy loss of the tow hook fixing parts is solved, and the stable switching and aesthetics of the tow hook in the locked and open states are achieved.
Patent Information
- Application Number
- CN202511155604.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-18
- Publication Date
- 2025-10-17
AI Technical Summary
In the prior art, the fixing parts of the tow hook are easily lost when not in use, which causes the tow hook to be unstable during vehicle operation and affects the appearance.
A tow hook assembly is designed, including a base structure, a tow hook body and a locking rod. Through the cooperation of a limit part and an elastic part, the tow hook is ensured to remain stable when switching between the locked and open states, preventing the locking rod from being lost and improving the aesthetics.
The tow hook can be stably switched between the locked and unlocked states, thus preventing the locking rod from being lost and improving the stability and aesthetics of the tow hook assembly.
Smart Images
Figure CN120792387A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of vehicle towing device, in particular to a tow hook assembly and a vehicle. BACKGROUND
[0002] The tow hook is a safety part required by the state, which is usually placed in the tool box of the vehicle or fixed on the vehicle body. When the vehicle breaks down or gets stuck in the mud, the rescue vehicle needs to tow the broken-down vehicle by the tow hook, and the broken-down vehicle needs to be towed by the rescue vehicle by the tow hook.
[0003] In the related art, the tow hook of most vehicles is installed on the bumper, and the tail end of the tow hook can rotate relative to the vehicle body. When the tow hook is not used, the front end of the tow hook is fixed on the vehicle body by a fixing member, so that the tow hook is in a locked state, preventing the tow hook from rotating relative to the vehicle body during vehicle operation. When the tow hook is used, the fixing member needs to be removed, so that the tow hook is in an open state. At this time, the fixing member is easy to fall into the bumper or easy to be lost. SUMMARY
[0004] The purpose of the present application is to solve the problem of how to fix the fixing member.
[0005] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows:
[0006] In a first aspect, the present application provides a tow hook assembly applied to a vehicle body, which comprises a base structure, a tow hook body and a locking rod. The base structure is fixed to the vehicle body. The tow hook body is rotationally connected to the base structure. The tow hook body has a through hole. The tow hook body has a locked state and an open state. The locking rod comprises a first limiting portion, a rod body portion and a second limiting portion. Part of the rod body portion is slidingly inserted into the through hole. The first limiting portion and the second limiting portion are both fixed to the rod body portion. The first limiting portion and the second limiting portion are located at both ends of the through hole, and the length of the first limiting portion and the second limiting portion along at least one radial direction of the through hole is greater than the hole diameter of the through hole. When the tow hook body is in the locked state, the rod body portion is connected to the base structure to limit the rotation of the tow hook body relative to the base structure. When the tow hook body is in the open state, the rod body portion is separated from the base structure, and the tow hook body can rotate relative to the base structure. The distance between the two adjacent sides of the first limiting portion and the second limiting portion along the axial direction of the through hole is greater than the movement distance of the rod body portion relative to the base structure along the axial direction of the through hole when the tow hook body changes from the locked state to the open state.
[0007] The base structure is connected with the vehicle body to achieve fixed connection of the towing hook assembly and the vehicle body; when the towing hook body is in the locking state, the rod body part of the locking rod is connected with the base structure to limit rotation of the towing hook body relative to the base structure, so that the towing hook body can remain stable when the vehicle is in the working state; when the towing hook body is in the open state, the rod body part of the locking rod is separated from the base structure, and the towing hook body can rotate relative to the base structure to open the towing hook body, at this time, the towing hook body can tow or be towed by other vehicles; since the first limiting part and the second limiting part are connected on the rod body part, the length of the first limiting part and the second limiting part along at least one radial direction of the through hole is greater than the diameter of the through hole, so the first limiting part and the second limiting part are certainly limited outside the through hole and cannot enter the through hole, and since the first limiting part and the second limiting part are located at two ends of the through hole, the first limiting part and the second limiting part limit separation of the rod body part from the towing hook body, that is, the locking rod and the towing hook body are always in the connected state, so that loss of the locking rod is prevented.
[0008] In addition, the distance between the first limiting part and the second limiting part along the axial direction of the through hole is greater than the movement distance of the rod body part relative to the base structure along the axial direction of the through hole when the towing hook body changes from the locking state to the open state, so that when the towing hook body switches between the locking state and the open state, the first limiting part does not interfere with the towing hook body, and the second limiting part does not interfere with the towing hook body, that is, the distance between the first limiting part and the second limiting part does not hinder mutual locking or separation between the rod body part and the base structure.
[0009] In some embodiments of the present application, when the towing hook body is in the locking state, the first limiting part is arranged away from the base structure along the axial direction of the through hole, and the second limiting part is arranged close to the base structure; the towing hook body has a first accommodating groove communicating with the through hole, and the second limiting part is located in the first accommodating groove when the towing hook body is in the open state and the locking state.
[0010] Based on the above embodiments, when the towing hook body is in the locking state, the second limiting part is in the first accommodating groove, at this time, the towing hook body can abut against the base structure, and the towing hook body can be better locked; when the towing hook body is in the open state, the second limiting part is still in the second accommodating groove, at this time, the second limiting part can be prevented from affecting connection of the towing hook body and the towing rope, and the second limiting part is hidden, improving the aesthetic appearance of the towing hook assembly.
[0011] In some embodiments of the present application, the towing hook assembly further comprises an elastic member, the elastic member is sleeved on the rod body part and clamped between the second limiting part and the bottom wall of the first accommodating groove, and the elastic potential energy of the elastic member gradually increases during the process that the towing hook body changes from the locking state to the open state.
[0012] Based on the above embodiment, the towing hook body needs to wind the towing rope when the towing hook body is in the open state, so that the vehicle can tow other vehicles or be towed by other vehicles; the elastic potential energy of the elastic member gradually increases during the process of the towing hook body changing from the locking state (the first limiting portion abutting against the towing hook body) to the open state, so that after the towing hook body switches to the open state, the elastic potential energy of the elastic member forces the towing hook body to return to the position where the first limiting portion abuts against the towing hook body, facilitating the mutual connection between the towing rope and the towing hook body.
[0013] In some embodiments of the present application, the elastic member is configured as a torsion spring.
[0014] In some embodiments of the present application, the elastic member is configured as a torsion spring, which has a shorter length after compression, so that the first accommodating groove has a smaller depth, thereby ensuring the structural strength of the towing hook body.
[0015] In some embodiments of the present application, one end of the elastic member away from the second limiting portion is fixedly connected with the bottom wall of the first accommodating groove.
[0016] Based on the above embodiment, after one end of the elastic member is connected with the bottom wall of the first accommodating groove, when the rod body portion rotates relative to the towing hook body, the elastic member can be ensured not to rotate with the rod body portion, thereby ensuring the stability of the elastic member.
[0017] In some embodiments of the present application, the towing hook body has a second accommodating groove communicating with the through hole, and the first limiting portion is located in the second accommodating groove when the towing hook body is in the locking state.
[0018] Based on the above embodiment, the towing hook body needs to be connected with the towing rope when the towing hook body is in the open state, and the first limiting portion located in the second accommodating groove can prevent the first limiting portion from affecting the connection between the towing hook body and the towing rope.
[0019] In some embodiments of the present application, the first limiting portion and the rod body portion together form a screw rod, and the second limiting portion is a nut.
[0020] Based on the above embodiment, the first limiting portion and the rod body portion form a screw rod, and the second limiting portion forms a nut, so that the screw rod and the nut are common standard parts, which are convenient to obtain. Moreover, the installation of the locking rod can be completed by penetrating the screw rod through the through hole and connecting the screw rod with the nut, thereby facilitating the assembly of the locking member and the towing hook body.
[0021] In some embodiments of the present application, the base structure includes a base and a locking member, the base is fixed to the vehicle body, and the towing hook body is rotationally connected to the base; the locking member is fixed to the base; when the towing hook body is in the locking state, the locking portion is connected with the locking member.
[0022] Based on the above embodiment, the base is fixed to the vehicle body to achieve fixed connection of the towing hook assembly and the vehicle body, the towing hook body is rotationally connected to the base to achieve rotation of the towing hook body relative to the vehicle body, and the locking member is used to be connected to the rod body when the towing hook body is in the locked state, thereby achieving mutual locking of the rod body and the base structure.
[0023] In some embodiments of the present application, when the towing hook body is in the locked state, the locking member is fixed to the base near one side of the towing hook body, and the locking member is in the first accommodating groove.
[0024] Based on the above embodiment, the locking member in the first accommodating groove avoids affecting the cooperation between the towing hook body and the base, and at the same time, the towing hook assembly has higher aesthetics when it is in the locked state.
[0025] In some embodiments of the present application, the base has an avoiding hole and a third accommodating groove in communication with each other, the third accommodating groove is located on the side of the base away from the towing hook body when the towing hook body is in the locked state, the avoiding hole communicates with the first accommodating groove, and the rod body passes through the avoiding hole to connect the locking member.
[0026] Based on the above embodiment, the locking member is arranged on the side of the base away from the towing hook body, which avoids affecting the cooperation between the towing hook body and the base when the towing hook body is in the locked state. At the same time, the third accommodating groove is arranged to accommodate the locking member, which avoids interference of the locking member with the connection between the base and the vehicle body, and improves the aesthetics of the towing hook assembly. In some embodiments of the present application, the towing hook body includes a tail and a head, the tail is rotationally connected to the base, the head is connected to the tail, the head has a rope passing hole and a tool through hole in communication with each other, the rope passing hole communicates with the through hole, and the axis of the tool through hole coincides with the axis of the through hole.
[0027] Based on the above embodiment, according to the formula M = LF, where L is the vector from the rotation axis to the force point (in the present application, the distance from the rotation connection point of the towing hook body and the base to the axis of the through hole), and F is the vector force (in the present application, the force applied by the locking rod to the towing hook body, which is the external force applied by the user to the towing hook body in the process of switching the towing hook body from the open state to the locked state), the tail of the towing hook body is rotationally connected to the base, and the head of the towing hook body is provided with the through hole. Therefore, the rotation connection point between the towing hook body and the base has a larger distance to the axis of the through hole, which reduces the demand for the vector force, that is, reduces the demand for the structural strength of the locking rod.
[0028] In a second aspect, the embodiments of the present application also provide a vehicle, which includes a vehicle body and a towing hook assembly as described above, and the base structure is fixed to the vehicle body.
[0029] Based on the vehicle of the embodiment of the present application, the vehicle can prevent the loss of the fixing member due to the above-mentioned tow hook assembly.
[0030] The present application has the following beneficial effects:
[0031] 1. The base structure is connected with the vehicle body to realize the fixed connection of the tow hook assembly and the vehicle body; when the tow hook body is in the locked state, the rod body part of the locking rod is connected with the base structure to limit the rotation of the tow hook body relative to the base structure, so that the tow hook body can still remain stable when the vehicle is in the working state; when the tow hook body is in the open state, the rod body part of the locking rod is separated from the base structure, and the tow hook body can rotate relative to the base structure to open the tow hook body; at this time, the tow hook body can tow or be towed by other vehicles; since the first limiting part and the second limiting part are connected on the rod body part, the length of the first limiting part and the second limiting part along at least one radial direction of the through hole is greater than the diameter of the through hole, so that the first limiting part and the second limiting part are definitely limited outside the through hole and cannot enter the through hole, and since the first limiting part and the second limiting part are located at both ends of the through hole, the first limiting part and the second limiting part limit the separation of the rod body part and the tow hook body, that is, the locking rod and the tow hook body are always in the connected state, so that the loss of the locking rod is prevented.
[0032] 2. The tow hook body needs to wind the towing rope when the tow hook body is in the open state, so that the vehicle can tow or be towed by other vehicles; during the process of changing the tow hook body from the locked state (the first limiting part abuts against the tow hook body) to the open state, the elastic potential energy of the elastic member gradually increases, so that after the tow hook body is switched to the open state, the elastic potential energy of the elastic member forces the tow hook body to return to the position where the first limiting part abuts against the tow hook body, facilitating the mutual connection between the towing rope and the tow hook body. BRIEF DESCRIPTION OF DRAWINGS
[0033] Figure 1 The structure diagram of the tow hook assembly when the tow hook body in some embodiments of the present application is in the locked state.
[0034] Figure 2 The cross-sectional view of the tow hook body along the axis of the through hole in the tow hook assembly shown in the figure. Figure 1
[0035] Reference signs:
[0036] 10. Base structure; 11. Base; 111. Avoidance hole; 112. Third accommodating groove; 12. Locking member; 20. Tow hook body; 21. Through hole; 22. First accommodating groove; 23. Rope passing hole; 24. Tool via hole; 30. Locking rod; 31. First limiting part; 32. Rod body part; 33. Second limiting part; 40. Elastic member. DETAILED DESCRIPTION
[0037] In order for those skilled in the art to better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings.
[0038] It should be noted that the terms "first", "second" and the like in the description and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present application. Rather, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.
[0039] The tow hook is a safety part required by the state, which is usually placed in the tool box of the vehicle or fixed to the vehicle body. When the vehicle breaks down or gets stuck in the mud, the rescue vehicle needs to pull the broken-down vehicle by the tow hook, and the broken-down vehicle needs to be pulled by the rescue vehicle by the tow hook.
[0040] In the related art, the tow hook of most vehicles is installed on the bumper, and the tail end of the tow hook can rotate relative to the vehicle body. When the tow hook is not used, the front end of the tow hook is fixed to the vehicle body by a fixing member, so that the tow hook is in a locked state, preventing the tow hook from rotating relative to the vehicle body during vehicle operation. When the tow hook is used, the fixing member needs to be removed, so that the tow hook is in an open state. At this time, the fixing member is extremely easy to fall into the bumper or extremely easy to be lost.
[0041] The embodiments of the present application provide a vehicle, which comprises a vehicle body and a tow hook assembly, and the tow hook assembly is fixed to the vehicle body.
[0042] The tow hook assembly is used to connect a towing rope, so that the vehicle can pull other vehicles or be pulled by other vehicles. The tow hook assembly in the embodiments of the present application can be a front tow hook or a rear tow hook of the vehicle. When the tow hook assembly is used as a front tow hook of the vehicle, the tow hook assembly is fixed to the front bumper of the vehicle. When the tow hook assembly is used as a rear tow hook of the vehicle, the tow hook assembly is fixed to the rear bumper beam of the vehicle.
[0043] Please refer to Figure 1 and Figure 2 In some embodiments of the present application, the tow hook assembly comprises a base structure 10, a tow hook body 20 and a locking rod 30.
[0044] The base structure 10 is fixed to the vehicle body, and the fixing of the base structure 10 to the vehicle body realizes the fixed connection of the tow hook assembly and the vehicle body. In combination with the above-mentioned tow hook assembly which can be used as a front tow hook or a rear tow hook, the base structure 10 is connected to the front bumper or the rear bumper beam.
[0045] Please refer to Figure 1 and Figure 2 As shown in the drawings, the hook body 20 is rotationally connected to the base structure 10, the hook body 20 has a through hole 21, the locking rod 30 includes a first limiting portion 31, a rod body portion 32 and a second limiting portion 33, the rod body portion 32 is partially inserted into the through hole 21, the first limiting portion 31 and the second limiting portion 33 are both fixed to the rod body portion 32, the first limiting portion 31 and the second limiting portion 33 are located at both ends of the through hole 21, and the length of the first limiting portion 31 and the second limiting portion 33 along at least one radial direction of the through hole 21 is greater than the hole diameter of the through hole 21.
[0046] The hook body 20 is rotationally connected to the base structure 10 to realize the rotation of the hook body 20 relative to the vehicle body.
[0047] The through hole 21 is used for the axial sliding connection of the part of the rod body portion 32 along the through hole 21, and the shape of the through hole 21 is not limited in the embodiment of the present application, as long as the rod body portion 32 can slide in the axial direction of the through hole 21. Meanwhile, the hole diameter of the through hole 21 is not limited in the embodiment of the present application, and it should be noted that the greater the diameter of the through hole 21, the lower the structural strength of the hook body 20, and the hole diameter of the through hole 21 in the embodiment of the present application should ensure that the hook body 20 still has sufficient structural strength.
[0048] The first limiting portion 31 and the second limiting portion 33 are both used to limit the rod body portion 32 from coming out of the through hole 21, therefore, the length of the first limiting portion 31 and the second limiting portion 33 along at least one radial direction of the through hole 21 should be greater than the hole diameter of the through hole 21, further, in order to improve the reliability of the first limiting portion 31 and the second limiting portion 33, in some embodiments of the present application, the through hole 21 forms a first opening and a second opening on the surface of the hook body 20, the part of the first limiting portion 31 along the axial projection of the through hole 21 on the hook body 20 coincides with the first opening, and the part of the second limiting portion 33 along the axial projection of the through hole 21 on the hook body 20 coincides with the second opening, the first limiting portion 31 is arranged near the first opening, and the second limiting portion 33 is arranged near the second opening.
[0049] In some embodiments of the present application, the through hole 21 is a constant diameter hole, and the shapes and sizes of the first opening and the second opening formed by the through hole 21 on the surface of the hook body are exactly the same.
[0050] The towing hook body 20 has a locking state and an open state; when the towing hook body 20 is in the locking state, the rod body part 32 is connected to the base structure 10 to limit the rotation of the towing hook body 20 relative to the base structure 10; when the towing hook body 20 is in the open state, the rod body part 32 is separated from the base structure 10, and the towing hook body 20 can rotate relative to the base structure 10; the distance between the first limiting part 31 and the second limiting part 33 is greater than the moving distance of the rod body part 32 relative to the base structure 10 along the axial direction of the through hole 21 when the towing hook body 20 changes from the locking state to the open state.
[0051] Based on the towing hook assembly provided by the embodiment of the present application, the base structure 10 is connected to the vehicle body to realize the fixed connection of the towing hook assembly and the vehicle body; when the towing hook body 20 is in the locking state, the rod body part 32 of the locking rod 30 is connected to the base structure 10 to limit the rotation of the towing hook body 20 relative to the base structure 10, so that the towing hook body 20 can still be kept stable when the vehicle is in the working state; when the towing hook body 20 is in the open state, the rod body part 32 of the locking rod 30 is separated from the base structure 10, and the towing hook body 20 can rotate relative to the base structure 10 to open the towing hook body 20, at this time, the towing hook body 20 can tow or be towed by other vehicles; since the first limiting part 31 and the second limiting part 33 are connected to the rod body part 32, the length of the first limiting part 31 and the second limiting part 33 along at least one radial direction of the through hole 21 is greater than the diameter of the through hole 21, so the first limiting part 31 and the second limiting part 33 are always limited outside the through hole 21 and cannot enter the through hole 21, and since the first limiting part 31 and the second limiting part 33 are located at the two ends of the through hole 21, the first limiting part 31 and the second limiting part 33 limit the separation of the rod body part 32 and the towing hook body 20, that is, the locking rod 30 and the towing hook body 20 are always in the connected state, so the loss of the locking rod 30 is prevented, and the falling of the locking rod 30 into the bumper is also prevented.
[0052] In addition, the distance between the first limiting part 31 and the second limiting part 33 along the axial direction of the through hole 21 is greater than the moving distance of the rod body part 32 relative to the base structure 10 along the axial direction of the through hole 21 when the towing hook body 20 changes from the locking state to the open state, which ensures that the first limiting part 31 does not interfere with the towing hook body 20 and the second limiting part 33 does not interfere with the towing hook body 20 when the towing hook body 20 switches between the locking state and the open state, that is, the distance between the first limiting part 31 and the second limiting part 33 does not hinder the mutual locking or separation between the rod body part 32 and the base structure 10.
[0053] Please refer to Figure 1 and Figure 2As shown in the drawings, in some embodiments of the present application, when the towing hook body 20 is in the locked state, the first limiting portion 31 is arranged away from the base structure 10 along the axis direction of the through hole 21, and the second limiting portion 33 is arranged close to the base structure 10. It can be understood that the rod body portion 32 is also used to connect the base structure 10. In some embodiments of the present application, the first limiting portion 31 is connected to one end of the rod body portion 32 away from the base structure 10, the second limiting portion 33 is connected to the middle position of the rod body portion 32, and the end of the rod body portion 32 away from the first limiting portion 31 is used to connect the base structure 10.
[0054] As shown in the drawings, Figure 1 and Figure 2 As shown in the drawings, in some embodiments of the present application, the towing hook body 20 has a first accommodating groove 22 communicating with the through hole 21, and the second limiting portion 33 is arranged in the first accommodating groove 22 when the towing hook body 20 is in the open state and the locked state.
[0055] When the towing hook body 20 is in the locked state, the second limiting portion 33 is arranged in the first accommodating groove 22, and at this time the towing hook body 20 can abut against the base structure 10. When the towing hook body 20 is in the open state, the second limiting portion 33 is still arranged in the second accommodating groove 112, which can prevent the second limiting portion 33 from affecting the connection of the towing hook body 20 and the towing rope. At the same time, the first accommodating groove 22 hides the second limiting portion 33, thereby improving the appearance of the towing hook assembly.
[0056] The first accommodating groove 22 is used to accommodate the second limiting portion 33. It can be understood that after the first accommodating groove 22 is formed in the towing hook body 20, the first accommodating groove 22 occupies the original through hole 21, so that the length of the through hole 21 is shortened. In some embodiments of the present application, the through hole 21 and the first accommodating groove 22 can be configured as circular holes, and the axis of the first accommodating groove 22 coincides with the axis of the through hole 21. It can be understood that because the first accommodating groove 22 needs to accommodate the second limiting portion, the hole diameter of the first accommodating groove 22 is larger than the hole diameter of the through hole 21.
[0057] As shown in the drawings, Figure 1 and Figure 2 As shown in the drawings, in some embodiments of the present application, the towing hook assembly further comprises a resilient member 40, the resilient member 40 is sleeved on the rod body portion 32 and clamped between the second limiting portion 33 and the bottom wall of the first accommodating groove 22, and the elastic potential energy of the resilient member 40 gradually increases during the process that the towing hook body 20 changes from the locked state to the open state.
[0058] The towing hook body 20 needs to wind the towing rope on the towing hook body 20 when the towing hook body 20 is in the open state, so that the vehicle can tow or be towed by other vehicles; the elastic potential energy of the elastic member 40 gradually increases during the process that the towing hook body 20 changes from the locking state (the first limiting part 31 abuts against the towing hook body 20) to the open state, so that the elastic potential energy of the elastic member 40 forces the towing hook body 20 to return to the position where the first limiting part 31 abuts against the towing hook body 20 after the towing hook body 20 switches to the open state, which not only facilitates the mutual connection between the towing rope and the towing hook body 20, but also reduces the damage of the first limiting part 31 caused by the towing rope due to the close contact between the first limiting part 31 and the towing hook body 20.
[0059] Please refer to Figure 2 In some embodiments of the present application, the elastic member 40 is configured as a tower spring. The tower spring is a shortened form of the pagoda-shaped spring, the outer diameter of each coil of which gradually decreases, and each coil of the tower spring can at least partially overlap after compression, so that the spring has a shorter length after compression, and the first accommodating groove 22 can have a smaller depth, so as to ensure the structural strength of the towing hook body 20.
[0060] In some embodiments of the present application, one end of the elastic member 40 away from the second limiting part 33 is fixedly connected with the bottom wall of the first accommodating groove 22. In the embodiments of the present application, the connection between the elastic member 40 and the bottom wall of the first accommodating groove 22 can adopt connection modes such as bonding, welding or clamping.
[0061] After one end of the elastic member 40 is connected with the bottom wall of the first accommodating groove, the elastic member 40 can be ensured not to rotate with the rod body 32 when the rod body 32 rotates relative to the towing hook body 20, so as to ensure the stability of the elastic member 40.
[0062] In some embodiments of the present application, the towing hook body 20 has a second accommodating groove communicating with the through hole 21, and the first limiting part 31 is located in the second accommodating groove when the towing hook body 20 is in the locking state and the open state.
[0063] The shape, size and depth of the second accommodating groove in the embodiments of the present application can be any shape, size and depth as long as the second accommodating groove can accommodate the first limiting part 31, for example, the second accommodating groove can be configured as a circular groove or a polygonal groove.
[0064] The first limiting part 31 is located in the second accommodating groove when the towing hook body 20 is in the open state, which can prevent the first limiting part 31 from affecting the connection between the towing hook body 20 and the towing rope.
[0065] In some embodiments of the present application, the first limiting part 31 and the rod body 32 together form a screw rod, the second limiting part 33 is a nut, and an adhesive layer is arranged between the nut and the screw rod.
[0066] The first limiting part 31 and the rod body part 32 constitute a screw rod, and the second limiting part 33 constitutes a nut, the screw rod and the nut are common standard parts, and are convenient to obtain. The screw rod passes through the through hole 21 and is connected with the nut, so that the installation of the locking rod 30 is completed, and the assembly of the locking part 12 and the tow hook body 20 is facilitated.
[0067] In some embodiments of the present application, the bolt can be configured as an internal hexagonal bolt. Due to the cooperation of the external dismounting tool and the internal hexagonal bolt, the radial length of the second accommodating groove can be smaller. In some other embodiments of the present application, the bolt can also be configured as an external hexagonal bolt. Please refer to Figure 1 and Figure 2 As shown in the figures, in some embodiments of the present application, the base structure 10 comprises a base 11 and a locking part 12. The base 11 is fixed to the vehicle body, and the tow hook body 20 is rotatably connected to the base 11. The locking part 12 is fixed to the base 11. When the tow hook body 20 is in the locked state, the locking part 12 is connected to the locking part 12.
[0068] The base 11 is fixed to the vehicle body to achieve the fixed connection between the tow hook assembly and the vehicle body. The tow hook body 20 is rotatably connected to the base 11 to achieve the rotation of the tow hook body 20 relative to the vehicle body. The locking part 12 is used to be connected to the rod body part 32 when the tow hook body 20 is in the locked state.
[0069] The base 11 is used to connect the vehicle body. The base 11 can be made of a material with high structural strength. In addition, the base 11 can be provided with a reinforcing structure, such as a reinforcing rib, to further enhance the structural strength of the base 11. The shape and size of the base 11 are not limited in the embodiments of the present application.
[0070] The locking part 12 is used to be locked with the rod body part 32, so that the tow hook body 20 is in the locked state. In some embodiments of the present application, the locking part 12 is configured as a first nut, the first limiting part 31 and the rod body part 32 are configured as an external hexagonal screw rod (the first limiting part 31 is the head of the screw rod, and the rod body part 32 is the rod part of the screw rod), and the second limiting part 33 is configured as a second nut. After the second nut is screwed to the middle position of the screw rod, the second nut is further fixed and connected to the screw rod by means of adhesion or the like.
[0071] In order to ensure that the tow hook body can have a more stable state when it is in the locked state, the tow hook body abuts against the base 11 when it is in the locked state. In some embodiments of the present application, when the tow hook body 20 is in the locked state, the locking part 12 is fixed to the base 11 near the side of the tow hook body 20, and the locking part 12 is in the first accommodating groove 22.
[0072] The locking part 12 in the first accommodating groove 22 avoids affecting the cooperation between the locking part 12, the tow hook body 20 and the base 11, so that the tow hook assembly has a higher aesthetic degree when it is in the locked state.
[0073] Please refer to Figure 2 As shown in In some embodiments of the present application, the base 11 has a third accommodating groove 112 and an avoiding hole 111 which are in communication with each other, the third accommodating groove 112 is located on the side of the base 11 which is away from the tow hook body 20 when the tow hook body is in the locking state, and the avoiding hole 111 is in communication with the first accommodating groove 22, and the rod body 32 passes through the avoiding hole 111 to connect the locking piece 12.
[0074] The locking piece 12 is arranged on the side of the base 11 which is away from the tow hook body 20, so that the first accommodating groove 22 does not need to accommodate the locking piece 12 when the tow hook body is in the locking state, and the first accommodating groove 22 can be arranged to have a shallower depth to ensure the structural strength of the tow hook body; and the locking piece 12 is arranged on the side of the base 11 which is away from the tow hook body 20, which avoids the influence of the locking piece 12 on the cooperation between the tow hook body 20 and the base 11; at the same time, the third accommodating groove 112 for accommodating the locking piece 12 is arranged, which avoids the interference of the locking piece 12 on the connection between the base 11 and the vehicle body, and improves the appearance of the tow hook assembly.
[0075] The depth and size of the third accommodating groove 112 are not limited in the embodiments of the present application, as long as the third accommodating groove 112 can accommodate the locking piece 12.
[0076] Please refer to Figure 1 and Figure 2 As shown in In some embodiments of the present application, the tow hook body 20 includes a tail portion and a head portion, the tail portion is rotatably connected to the base 11; the head portion is connected to the tail portion, and the head portion has a rope passing hole 23 and a tool through hole 24 which are in communication with each other, the rope passing hole 23 is in communication with the through hole 21, and the axis of the tool through hole 24 coincides with the axis of the through hole 21.
[0077] The rope passing hole 23 is used for connecting the tow hook body 20 to the towing rope, and the advantage of the rope passing hole 23 is that the tow hook body 20 forms a closed ring, the towing rope is connected to the head portion of the tow hook body 20 after passing through the rope passing hole 23, and the towing rope cannot come out of the head portion of the tow hook body 20 which forms a closed ring.
[0078] The tool through hole 24 is used for the dismounting tool for dismounting the locking rod 30 to pass through, and the axis of the tool through hole 24 coincides with the axis of the through hole 21, which facilitates the dismounting tool to dismount the locking rod 30.
[0079] According to the torque formula M=LF, wherein L is the vector from the rotating shaft to the force point (in the present application, the distance from the rotating connection point of the hook body 20 and the base 11 to the axis of the through hole 21), and F is the vector force (in the present application, F is the force exerted by the locking rod 30 on the hook body 20 when the hook body 20 is in the locked state; in the process of switching the hook body 20 from the open state to the locked state, it is the external force exerted by the user on the hook body 20), the tail of the hook body 20 is connected to the base 11, and the head of the hook body 20 is provided with a through hole 21. The rotating connection point between the hook body 20 and the base 11 has a large distance to the axis of the through hole 21, reducing the demand for vector force, i.e. reducing the demand for the structural strength of the locking rod 30.
[0080] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any change or replacement within the technical scope disclosed in the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A tow hook assembly, characterized in that: Applied to a vehicle body, the tow hook assembly includes: A base structure (10), wherein the base structure (10) is fixed to the vehicle body; A towing hook body (20), the towing hook body (20) is rotatably connected to the base structure (10), the towing hook body (20) has a through hole (21), and the towing hook body (20) has a locked state and an open state; and A locking rod (30), the locking rod (30) comprising a first limiting portion (31), a rod body (32) and a second limiting portion (33), a portion of the rod body (32) being slidably inserted into the through hole (21), the first limiting portion (31) and the second limiting portion (33) being fixed to the rod body (32), the first limiting portion (31) and the second limiting portion (33) being located at both ends of the through hole (21), and a length of the first limiting portion (31) and the second limiting portion (33) along at least one radial direction of the through hole (21) being greater than a hole diameter of the through hole (21); When the towing hook body (20) is in a locked state, the rod portion (32) is connected to the base structure (10) to limit the rotation of the towing hook body (20) relative to the base structure (10); when the towing hook body (20) is in an open state, the rod portion (32) is separated from the base structure (10), and the towing hook body (20) can rotate relative to the base structure (10); the distance between the first limiting portion (31) and the second limiting portion (33) along the axial direction of the through hole (21) adjacent to each other is greater than the axial movement distance of the rod portion (32) relative to the base structure (10) along the through hole (21) when the towing hook body (20) is changed from the locked state to the open state.
2. The towing hook assembly according to claim 1, characterized in that: When the towing hook body (20) is in a locked state, the first limiting portion (31) is arranged away from the base structure (10) along the axial direction of the through hole (21), and the second limiting portion (33) is arranged close to the base structure (10); The towing hook body (20) has a first accommodating groove (22) communicating with the through hole (21); when the towing hook body (20) is in an open state and a locked state, the second limiting portion (33) is located in the first accommodating groove (22).
3. The towing hook assembly according to claim 2, characterized in that: The towing hook assembly further includes: An elastic member (40) is sleeved on the rod portion (32) and is clamped between the second limiting portion (33) and the bottom wall of the first accommodating groove (22). The elastic potential energy of the elastic member (40) gradually increases during the process of the towing hook body (20) changing from a locked state to an open state.
4. The towing hook assembly according to claim 3, characterized in that: The elastic member (40) is configured as a tower spring.
5. The towing hook assembly according to claim 3, characterized in that: One end of the elastic member (40) away from the second limiting portion (33) is fixedly connected to the bottom wall of the first accommodating groove (22).
6. The towing hook assembly according to claim 1, characterized in that: The towing hook body (20) has a second accommodating groove communicating with the through hole (21), and the first limiting portion (31) is located in the second accommodating groove when the towing hook body (20) is in the locked state and the open state.
7. The towing hook assembly according to claim 1, characterized in that: The first limiting portion (31) and the rod body portion (32) are both screws, and the second limiting portion (33) is a nut.
8. The towing hook assembly according to any one of claims 2 to 7, characterized in that: The base structure (10) comprises: A base (11), the base (11) is fixed to the vehicle body, and the tow hook body (20) is rotatably connected to the base (11); and A locking member (12), wherein the locking member (12) is fixed to the base (11); When the towing hook body (20) is in a locked state, the rod portion (32) is connected to the locking member (12).
9. The towing hook assembly according to claim 8, characterized in that: When the towing hook body (20) is in a locked state, the locking member (12) is fixed to a side of the base (11) close to the towing hook body (20), and the locking member (12) is located in the first receiving groove (22).
10. The towing hook assembly according to claim 8, characterized in that: The base (11) has a relief hole (111) and a third receiving groove (112) that are connected to each other. When the towing hook body (20) is in a locked state, the third receiving groove (112) is located on a side of the base (11) away from the towing hook body (20), and the relief hole (111) is connected to the first receiving groove (22). The rod body (32) passes through the relief hole (111) and is connected to the locking member (12).
11. The towing hook assembly according to claim 8, characterized in that: The towing hook body (20) comprises: a tail portion, the tail portion being rotatably connected to the base (11); and The head portion is connected to the tail portion, and the head portion has a rope threading hole (23) and a tool through hole (24) that are connected to each other, the rope threading hole (23) is connected to the through hole (21), and the axis of the tool through hole (24) coincides with the axis of the through hole (21).
12. A vehicle, characterized in that: include: body; as well as, The towing hook assembly according to any one of claims 1 to 11, wherein the base structure (10) is fixed to the vehicle body.