Trailer hitch assembly and vehicle

Abstract

The application relates to the chassis technical field and provides a trailer hook assembly and a vehicle. The trailer hook assembly comprises a mounting seat, a trailer hook detachably arranged on the mounting seat, and a locking part arranged between the trailer hook and the mounting seat. An installation cavity is formed in the mounting seat. The trailer hook is provided with an unlocking part and an anti-theft part. When the trailer hook is inserted into the installation cavity, the locking part can lock the trailer hook on the mounting seat. The anti-theft part and the unlocking part are linked and arranged, and the anti-theft part can drive the unlocking part to switch between a first state and a second state. In the first state, the unlocking part is prohibited from being unlocked. In the second state, the unlocking part is driven by external force to release the locking of the locking part on the trailer hook. The trailer hook assembly can be conveniently detached, has good anti-theft and anti-falling performance, and is favorable for improving the use experience of users.

Description

Technical Field

[0001] This application relates to the field of chassis technology, and in particular to a trailer hitch assembly and vehicle. Background Technology

[0002] A trailer hitch is a mechanical connection device installed on a vehicle, mainly used for towing, dragging, or carrying external equipment. In traditional designs, trailer hitches are directly or indirectly connected to the vehicle's support structure, making it difficult to balance ease of loading and unloading with anti-theft and anti-fall-off performance, thus still having shortcomings in use. Utility Model Content

[0003] In view of this, the present application aims to provide a trailer hitch assembly that is easy to disassemble and has good anti-theft and anti-detachment performance.

[0004] To achieve the above objectives, the technical solution of this application is implemented as follows:

[0005] A trailer hitch assembly includes a mounting base, a trailer hitch detachably mounted on the mounting base, and a locking portion disposed between the trailer hitch and the mounting base;

[0006] The mounting base has a mounting cavity, and the trailer hook is provided with an unlocking part and an anti-theft part. When the trailer hook is inserted into the mounting cavity, the locking part can lock the trailer hook onto the mounting base.

[0007] The anti-theft unit is linked to the unlocking unit and can drive the unlocking unit to switch between a first state and a second state. In the first state, the unlocking unit is prohibited from unlocking. In the second state, the unlocking unit is driven by external force to release the locking unit from locking the trailer hook.

[0008] Furthermore, the locking part includes a locking groove on the wall of the mounting cavity, a pushing member, a locking member, and a locking assembly on the trailer hook, and a first elastic member between the locking member and the unlocking part; the pushing member is slidably disposed in the receiving cavity on the trailer hook, the locking member is disposed on the cavity wall of the receiving cavity, and the locking member is located on the sliding path of the pushing member; the locking assembly locks the pushing member on the trailer hook, and when the trailer hook is inserted into the mounting cavity, the locking assembly can release the locking of the pushing member, and after the locking is released, the pushing member, under the force of the first elastic member, can push the locking member into the locking groove to lock the trailer hook.

[0009] Furthermore, the cavity wall of the receiving cavity is provided with multiple mounting holes, the locking member is a locking ball provided in the corresponding mounting hole, and the locking groove is an annular groove provided along the circumference of the mounting cavity; and / or, the pushing member has a conical surface at one end for pushing the locking member, and the pushing member pushes the locking member into the locking groove through the conical surface.

[0010] Furthermore, the locking assembly includes a lock hole on the cavity wall of the receiving cavity, a locking pin in the lock hole, a locking member on the push member, and a second elastic member between the locking member and the push member; the locking member can be inserted into the lock hole under the force of the second elastic member to lock the push member, and the locking pin is pushed by the cavity wall of the mounting cavity to push the locking member out of the lock hole and release the locking of the push member.

[0011] Furthermore, the anti-theft unit includes a lock cylinder disposed on the trailer hook and a key adapted to the lock cylinder. The unlocking unit includes a transmission member pulsatingly connected to the locking unit, a lock rod slidably disposed on the transmission member, a locking ball disposed in the transmission member, and a lock groove disposed on the trailer hook. The lock rod is pulsatingly connected to the lock cylinder. When the key is operated, it can drive the lock rod to slide through the lock cylinder, so as to drive the locking ball into the lock groove or to disengage the locking ball from the lock groove.

[0012] Furthermore, the anti-theft unit includes a lock cylinder disposed on the trailer hook and a key adapted to the lock cylinder. The unlocking unit includes a transmission member pulsatingly connected to the locking unit, a lock rod slidably disposed on the transmission member, a locking ball disposed in the transmission member, and a lock groove disposed on the trailer hook. The lock rod is pulsatingly connected to the lock cylinder. When the key is operated, it can drive the lock rod to slide through the lock cylinder, so as to drive the locking ball into the lock groove or to disengage the locking ball from the lock groove.

[0013] Furthermore, the lock cylinder is provided with a spiral groove, and the lock rod is provided with a guide post inserted into the spiral groove; when the key is operated to drive the lock cylinder to rotate, the guide post, guided by the spiral groove, can drive the lock rod to slide relative to the transmission component.

[0014] Furthermore, the transmission member is rotatably mounted on the trailer hook, and a third elastic member is provided between the transmission member and the trailer hook; when the unlocking part is in the second state, the transmission member can slide outward from the trailer hook under the force of the third elastic member, so that the locking ball is misaligned from the locking groove.

[0015] Furthermore, the mounting base is provided with a power-receiving bracket, and a locking unit is provided between the power-receiving bracket and the mounting base; the power-receiving bracket is rotatably mounted on the mounting base, and the power-receiving bracket is provided with a mounting part for mounting a socket; the locking unit is used to lock the power-receiving bracket on the mounting base, and the locking unit has multiple locking positions.

[0016] The mounting base is provided with a rotating shaft, and the power supply bracket is rotatably mounted on the rotating shaft via a mounting sleeve; the locking unit includes a groove provided on the mounting sleeve, and a fourth elastic element provided between the mounting sleeve and the rotating shaft; the grooves are a plurality of grooves arranged at intervals along the circumference of the mounting sleeve, and under the action of the fourth elastic element, the rotating shaft can be engaged into one of the grooves and lock the power supply bracket at the locking position corresponding to the groove.

[0017] Compared with related technologies, this application has the following advantages:

[0018] (1) The trailer hitch assembly of this application provides a locking part between the trailer hitch and the mounting base, and an unlocking part and an anti-theft part on the trailer hitch. The anti-theft part and the unlocking part are linked together, and the unlocking part can release the locking part from the trailer hitch under external force. Thus, the trailer hitch can be locked onto the mounting base by inserting it into the mounting cavity, which facilitates disassembly. In addition, by driving the unlocking part to switch between a first state where unlocking is prohibited and a second state where locking can be released, the anti-theft performance of the trailer hitch can be improved, preventing the trailer hitch from accidentally falling off or being lost, which helps to ensure the safety of vehicle parts and improves the user experience.

[0019] (2) By setting a locking groove on the wall of the mounting cavity, setting a pusher, a locking member, and a locking assembly on the trailer hook, and setting a first elastic member between the locking member and the unlocking part, wherein the pusher is slidably disposed in the receiving cavity on the trailer hook, the locking member is disposed on the cavity wall of the receiving cavity and located on the sliding path of the pusher, and the locking assembly locks the pusher on the trailer hook. When the trailer hook is inserted into the mounting cavity, the locking assembly can release the locking of the pusher, and the pusher after being released pushes the locking member into the locking groove under the force of the first elastic member. This enables the trailer hook to be automatically locked on the mounting base without the need for manual locking. The operation is simple and quick, which helps to improve the installation efficiency and thus further enhances the user experience.

[0020] (3) By setting multiple mounting holes on the cavity wall of the receiving cavity, and making the locking element a locking ball set in the mounting hole, and the locking groove an annular groove set along the periphery of the mounting cavity, the stability and anti-theft effect of the trailer hook locking can be enhanced. A conical surface is set at one end of the pusher used to push the locking element, and the pusher can push the locking element into the locking groove through the conical surface. In this way, the cooperation of the conical surface, locking ball, mounting hole and locking groove can facilitate the pusher to push the locking element into the locking groove smoothly, which is conducive to ensuring the reliability of the trailer hook connection. At the same time, the structure is simple and easy to manufacture and implement, which is conducive to reducing costs and promoting the application of trailer hooks.

[0021] (4) The locking assembly includes a lock hole on the cavity wall of the receiving cavity, a lock pin in the lock hole, a locking member on the push member, and a second elastic member between the locking member and the push member. The locking member can be inserted into the lock hole under the action of the second elastic member to lock the push member. In this way, the locking member is always locked under the action of the second elastic member, which effectively prevents the push member from being accidentally unlocked due to misoperation and helps to improve the locking reliability. The lock pin is pushed by the cavity wall of the mounting cavity, which can push the locking member out of the lock hole and release the lock on the push member. This enables the locking assembly to automatically unlock when the trailer hook is inserted into the mounting cavity, so that the push member can push the locking member to the locking groove under the action of the first elastic member, which can automatically lock the trailer hook on the mounting seat, making the operation simple and quick, helping to improve the installation efficiency and thus further improving the user experience.

[0022] (5) By setting a locking part between the trailer hook and the mounting base, and setting an unlocking part and an anti-theft part on the trailer hook, the anti-theft part includes a lock cylinder on the trailer hook and a key that is compatible with the lock cylinder. The unlocking part includes a transmission component that is connected to the locking part, a lock bar that is slidably set on the transmission component, a locking ball set in the transmission component, and a lock groove set on the trailer hook. The lock bar is connected to the lock cylinder. When the key is operated, it can drive the lock bar to slide through the lock cylinder, so as to drive the locking ball into or out of the lock groove. In this way, the locking part, the unlocking part and the anti-theft part are used to realize the locking and unlocking of the trailer hook and the mounting base. While ensuring the trailer hook is installed firmly, the ease of use and anti-theft performance of the trailer hook can also be improved.

[0023] (6) A spiral groove is provided on the lock cylinder, and a guide post is provided on the lock rod that is inserted into the spiral groove. In this way, by turning the key to rotate the lock cylinder, the lock rod can be driven to slide under the guidance of the spiral groove, completing the action of the locking ball entering or exiting the lock groove. This makes the operation simple and convenient. At the same time, its structure is simple and the locking is reliable, which can improve the anti-theft performance of the trailer hitch. The operation part with radial outward protrusion on the transmission component can facilitate user operation and improve the operability of the transmission component under harsh conditions, thereby further improving the user experience.

[0024] (7) The transmission component is rotated and mounted on the trailer hook, and a third elastic element is provided between the transmission component and the trailer hook. When the unlocking part is in the second state, the transmission component can slide outward from the trailer hook under the force of the third elastic element so that the locking ball is offset from the locking groove. This arrangement makes it easier for the locking ball to be offset from the locking groove, thereby making it easier for the unlocking part to unlock, and further making it easier for the user to operate the transmission component, which is conducive to further improving the user experience.

[0025] (8) By rotating the power supply bracket on the mounting base and setting a locking unit with multiple locking positions between them, the power supply bracket can rotate around the mounting base, and the locking unit can fix it in different positions. In this way, by using the rotatable power supply bracket and the locking unit with multiple locking positions, reliable support can be provided for the power supply setting. At the same time, by using the feature of multiple locking positions, the working position of the power supply bracket can be adjusted according to the usage requirements, which helps to improve the convenience of use and enhance the user experience.

[0026] (9) By setting a rotating shaft on the mounting base, the power supply bracket is rotatably mounted on the rotating shaft with the help of the mounting sleeve. The locking unit includes multiple grooves arranged at intervals along the circumference of the mounting sleeve and a fourth elastic element located between the mounting sleeve and the rotating shaft. Under the force of the fourth elastic element, the rotating shaft can be engaged in any groove and lock the power supply bracket. In this way, by utilizing the rotational cooperation between the rotating shaft and the mounting sleeve and the multi-groove locking structure, the power supply bracket can be flexibly rotated while the power supply bracket can be locked in different locking positions using multiple grooves. This allows the working position of the power supply bracket to be adjusted according to usage requirements, which helps to improve the user experience. At the same time, the cooperation structure between the grooves and the elastic element is simple and the engagement is firm and reliable, which can effectively reduce loosening or displacement during use, thereby improving the overall structural reliability of the power supply bracket.

[0027] This application also proposes a vehicle in which a trailer hitch assembly as described above is provided.

[0028] The vehicle described in this application, by setting the trailer hitch assembly as described above, not only makes the trailer hitch easy to install and remove, but also improves the anti-theft performance of the trailer hitch, helps prevent the trailer hitch from being maliciously dismantled, ensures the safety of vehicle parts, and thus improves the user experience of the vehicle and enhances the vehicle's market competitiveness. Attached Figure Description

[0029] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0030] Figure 1This is a schematic diagram of the overall structure of the trailer hitch assembly described in the embodiments of this application;

[0031] Figure 2 for Figure 1 A schematic diagram of the structure shown from another perspective;

[0032] Figure 3 This is a schematic diagram of the mating structure between the mounting base and the trailer hitch as described in the embodiments of this application;

[0033] Figure 4 This is a schematic diagram of the overall structure of the trailer hitch described in the embodiments of this application;

[0034] Figure 5 This is a cross-sectional view of the trailer hitch described in the embodiment of this application;

[0035] Figure 6 This is a cross-sectional view of the mounting base described in the embodiment of this application;

[0036] Figure 7 This is a schematic diagram illustrating the fit between the dust cover of the mounting cavity and the mounting base as described in an embodiment of this application;

[0037] Figure 8 This is a schematic diagram of the structure of the dust cover for the mounting cavity described in an embodiment of this application;

[0038] Figure 9 This is a schematic diagram of the structure of the pusher described in the embodiments of this application;

[0039] Figure 10 This is a schematic diagram of the overall structure of the transmission component described in the embodiments of this application;

[0040] Figure 11 for Figure 10 A schematic diagram of the structure shown in the image from another perspective;

[0041] Figure 12 This is a schematic diagram of the cooperation structure between the anti-theft part and the cavity as described in the embodiments of this application;

[0042] Figure 13 This is a schematic diagram of the anti-theft unit described in an embodiment of this application;

[0043] Figure 14 This is a schematic diagram of the overall structure of the power supply bracket described in the embodiments of this application;

[0044] Figure 15 This is a schematic diagram of the power supply bracket described in an embodiment of this application in another locked position;

[0045] Figure 16 This is a cross-sectional view of the locking unit described in the embodiments of this application;

[0046] Figure 17This is an exploded view of the power supply bracket described in the embodiments of this application;

[0047] Explanation of reference numerals in the attached figures:

[0048] 1. Mounting base; 11. Mounting cavity; 111. First cavity; 112. Second cavity; 1121. Guide arc surface; 113. Third cavity; 12. Rotating shaft; 13. Snap-fit ​​surface; 14. Guide notch; 15. Locking groove; 16. Plug; 17. Locking seat; 171. Locking groove; 18. Connecting hole;

[0049] 2. Trailer hook; 21. Receiving cavity; 211. Pushing component; 2111. Conical surface; 2112. Locking component; 2113. Second elastic component; 2114. Rack; 2115. Blind hole; 2116. Main body; 2117. Extension section; 212. Mounting hole; 213. Locking ball; 214. First elastic component; 215. Locking hole; 2151. Locking pin; 22. Sealing component;

[0050] 3. Transmission components; 31. Lock cylinder; 311. Spiral groove; 32. Key; 33. Lock rod; 331. Guide post; 34. Locking ball; 35. Operating part; 351. Lock cylinder dust cover; 36. Third elastic element; 37. Transmission gear; 38. Limit block;

[0051] 4. Power supply bracket; 41. Mounting sleeve; 411. Groove; 42. Fourth elastic element; 43. Dust cap; 44. Locking plate; 45. Washer;

[0052] 5. Install the cavity dust cover; 51. Cover plate; 52. Buckle; 53. Guide block;

[0053] 6. Crossbeam assembly; 61. Crossbeam; 62. Mounting plate; 63. Connecting plate. Detailed Implementation

[0054] To make the technical solution and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0055] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0056] Furthermore, it should be noted that in the description of this application, if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, these are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this application 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 on this application. In addition, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0057] Furthermore, in the description of this application, unless otherwise expressly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application in light of the specific circumstances.

[0058] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0059] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0060] An embodiment of the first aspect of this application provides a trailer hitch assembly, which is mainly used for towing, dragging or carrying external equipment. Furthermore, the trailer hitch assembly of this embodiment, through its innovative structural design, can be easily disassembled and assembled while also taking into account anti-theft performance, thereby improving the user experience.

[0061] In related technologies, trailer hitches, as connecting devices installed at the rear or front of a vehicle, are not only core components of the vehicle's towing function but also play an important practical role. They can effectively achieve a stable connection between the vehicle and other equipment (such as trailers, RVs, rescue equipment, etc.), making the vehicle more reliable and efficient when it needs to tow, pull, or carry external equipment.

[0062] In traditional designs, tow hooks are connected directly or indirectly to the vehicle's support structure via an adapter chassis. This connection method often lacks a flexible loading and unloading mechanism. It either requires complex tools and cumbersome operations, causing significant inconvenience for users when needed for temporary use or storage; or, in pursuit of ease of loading and unloading, the fixing structure is simplified, resulting in a significant reduction in anti-theft and anti-detachment performance, making it susceptible to malicious disassembly or accidental detachment during towing. Therefore, it is difficult to balance ease of loading and unloading with anti-theft and anti-detachment performance, thus remaining a limitation in its usability.

[0063] In view of this, in order to overcome the shortcomings of the related technology, the trailer hitch assembly of this embodiment combines... Figures 1 to 9 As shown, the overall design includes a mounting base 1, a trailer hook 2 detachably mounted on the mounting base 1, and a locking part located between the trailer hook 2 and the mounting base 1.

[0064] The mounting base 1 has a mounting cavity 11. The trailer hook 2 is equipped with an unlocking part and an anti-theft part. When the trailer hook 2 is inserted into the mounting cavity 11, the locking part can lock the trailer hook 2 onto the mounting base 1. The anti-theft part and the unlocking part are linked and can drive the unlocking part to switch between a first state and a second state. In the first state, the unlocking part is prohibited from unlocking. In the second state, the unlocking part is driven by external force to release the locking part from locking the trailer hook 2.

[0065] Therefore, by providing a locking part between the tow hook and the mounting base 1, and by providing an unlocking part and an anti-theft part on the tow hook 2, and by linking the anti-theft part and the unlocking part together, and by allowing the unlocking part to release the locking part from the tow hook 2 under external force, the tow hook 2 can be locked onto the mounting base 1 by inserting it into the mounting cavity 11, facilitating disassembly. Furthermore, by switching the unlocking part between a first state where unlocking is prohibited and a second state where unlocking is permitted, the anti-theft performance of the tow hook 2 can be improved, preventing accidental detachment or loss of the tow hook 2, thus helping to ensure the safety of vehicle accessories and improving the user experience.

[0066] Based on the above overview, specifically, as an exemplary structural form, the trailer hitch assembly in this embodiment still consists of... Figure 1 , Figure 2 and combined Figures 6 to 8 As shown, it generally also includes a crossbeam assembly 6 for mounting the mounting seat 1 to the vehicle body, and a mounting cavity dust cover 5 for sealing the mounting cavity opening.

[0067] The aforementioned dust cover 5 for the mounting cavity is detachably mounted on the mounting base 1 and can be positioned in front of the mounting cavity 11 to provide a seal and protection for the mounting cavity 11 before the trailer hitch assembly is installed. This prevents dust, mud, and other debris from entering the mounting cavity 11, avoiding situations such as jamming failure when the trailer hitch assembly is fitted into the mounting cavity 11. Simultaneously, it also prevents rainwater or moisture from intruding and causing corrosion of the internal components of the mounting cavity 11, thus avoiding affecting its service life and connection reliability, and ultimately improving the safety of the trailer hitch assembly in use.

[0068] The dust cover 5 for the mounting cavity includes a cover plate 51, clips 52 at both ends of the cover plate 51, and guide blocks 53 for guiding the clips 52 to engage with the mounting base 1. The cover plate 51 is conformally designed to fit the opening of the mounting cavity 11, ensuring a tight fit with the end of the mounting base and guaranteeing a good seal, further enhancing the protection of the mounting cavity 11. The clips 52 engage with the engaging surface 13 on the mounting base 1, ensuring a tight connection between the dust cover 5 and the mounting base 1, and providing stable positioning in the vertical and horizontal directions of the vehicle, preventing displacement or detachment of the dust cover due to vibration or other factors during vehicle operation. The guide blocks 53 are conformally designed to fit the guide notch 14 on the mounting base 1, guiding the dust cover 5 during installation to ensure accurate positioning. They also effectively limit the dust cover 5 in the longitudinal direction of the vehicle, ensuring the stability of the dust cover installation and its continuous sealing protection.

[0069] The aforementioned crossbeam assembly 6 includes a crossbeam 61 connected to the mounting base 1, a mounting plate 62 disposed on the crossbeam 61, and connecting plates 63 disposed at both ends of the crossbeam 61 for connection with the vehicle.

[0070] The aforementioned crossbeam assembly 6 is typically connected to the mounting base 1 via a screw connection through the mounting plate 62. When the vehicle is towing, i.e. when the trailer hook 2 is under stress, the high strength of the screw connection can be used to ensure the stability of the connection between the crossbeam assembly 6 and the mounting base 1, reduce the probability of the connection loosening or breaking under stress, and reduce safety hazards caused by connection problems, thereby improving the overall reliability of the trailer hook 2 structure.

[0071] To ensure their structural strength, the aforementioned crossbeam 61, mounting plate 62, and connecting plate 63 are typically made of steel. Any related structures not mentioned can be referred to from the existing crossbeam assembly 6 structures familiar to those skilled in the art, and will not be described in detail here.

[0072] Combination Figures 3 to 6 as well as Figure 9As shown, in some exemplary embodiments, the locking part includes a locking groove 171 provided on the cavity wall of the mounting cavity 11, a pusher 211, a locking member and a locking assembly provided on the trailer hook 2, and a first elastic member 214 provided between the locking member and the unlocking part. The pusher 211 is slidably disposed in the receiving cavity 21 on the trailer hook 2, the locking member is disposed on the cavity wall of the receiving cavity 21, and the locking member is located on the sliding path of the pusher 211.

[0073] The locking assembly locks the pusher 211 onto the trailer hook 2. When the trailer hook 2 is inserted into the mounting cavity 11, the locking assembly can release the lock on the pusher 211. After the lock is released, the pusher 211, under the force of the first elastic member 214, can push the locking member into the locking groove 171 to lock the trailer hook 2.

[0074] With this configuration, a locking groove 171 is provided on the wall of the mounting cavity 11, and a pusher 211, a locking member, and a locking assembly are provided on the trailer hook 2. A first elastic member 214 is provided between the locking member and the unlocking part. The pusher 211 is slidably disposed in the receiving cavity 21 on the trailer hook 2. The locking member is disposed on the wall of the receiving cavity 21 and located on the sliding path of the pusher 211. The locking assembly locks the pusher 211 on the trailer hook 2. When the trailer hook 2 is inserted into the mounting cavity 11, the locking assembly can release the locking of the pusher 211. After the locking is released, the pusher 211 pushes the locking member into the locking groove 171 under the force of the first elastic member 214, thereby automatically locking the trailer hook 2 on the mounting base 1 without the need for additional manual locking. The operation is simple and quick, which helps to improve installation efficiency.

[0075] The mounting base 1 comprises three parts: a base body forming the mounting cavity 11, a detachable cap 16 located at one end of the base body, and a locking seat 17 located within the mounting cavity 11, with a locking groove 171 on the locking seat 17. Specifically, the locking seat 17 is annular and coaxially aligned with the mounting cavity 11, with the locking groove 171 formed on the inner surface of the annulus. During installation, one end of the locking seat 17 abuts against the positioning shoulder of the mounting cavity 11, and its outer surface is press-fitted with the mounting cavity. This facilitates a tight fit between the locking seat 17 and the mounting cavity 11, preventing the locking seat 17 from detaching due to vibrations or impacts experienced by the vehicle during operation, thereby improving the reliability of the connection between the trailer hitch 2 and the mounting base 1. The aforementioned plug 16 is typically made of rubber to effectively prevent dust, water, and other impurities from entering the mounting cavity 11, thus avoiding rusting of the locking seat 17 due to moisture or dust accumulation, which could lead to problems such as jamming or loosening of the trailer hook 1 during installation, thereby improving the reliability of the connection between the trailer hook 2 and the mounting seat 1.

[0076] Furthermore, it is worth mentioning that the mounting base 1 in this embodiment is also provided with connecting holes 18 for passing through connecting bolts, and the connecting lines between each connecting hole 18 form a triangle. The high strength of the triangular structure can be used to enhance the reliability of the connection between the mounting base 1 and the crossbeam assembly 6, thereby increasing the stability of the trailer hook 2 during vehicle body installation.

[0077] Continue to combine Figures 3 to 6 as well as Figure 9 As shown, in some exemplary embodiments, the cavity wall of the receiving cavity 21 is provided with a plurality of mounting holes 212, the locking member is a locking ball 213 provided in the corresponding mounting hole 212, and the locking groove 171 is an annular groove provided along the circumference of the mounting cavity 11.

[0078] This configuration, with multiple mounting holes 212 on the cavity wall of the receiving cavity 21, a locking ball 213 located within the mounting hole 212 as the locking element, and an annular groove 171 circumferentially arranged around the periphery of the mounting cavity 11, enhances the stability and anti-theft effect of the trailer hook 2. The pushing member 211 has a conical surface 2111 at one end for pushing the locking element, and pushes the locking element into the locking groove 171 through the conical surface 2111. Thus, the cooperation of the conical surface 2111, the locking ball 213, the mounting hole 212, and the locking groove 171 facilitates the pushing member 211 in smoothly pushing the locking element into the locking groove 171, ensuring the reliability of the trailer hook 2 connection. The structure is simple, easy to manufacture and implement, thus reducing costs and promoting the widespread application of the trailer hook 2.

[0079] Specifically, such as Figure 9 As shown, the pusher 211 includes a cylindrical main body 2116 and a conical surface 2111 at one end of the main body 2116. The cross-section of the conical surface 2111 gradually tapers away from the main body 2116. An extension 2117 is provided at the other end of the main body 2116. The extension 2117 is coaxially arranged with the main body 2116, and its radial dimension is smaller than that of the main body 2116. The extension 2117 extends away from the main body 2116. Notably, a first elastic member 214 is sleeved on the extension 2117 and is a spring coaxially arranged with the extension 2117. This guides the first elastic member 214 and ensures uniform force distribution during compression or stretching, thereby providing a more constant restoring force and preventing elastic force attenuation or instability caused by uneven force distribution on the first elastic member 214.

[0080] In this embodiment, the trailer hitch 2, as shown... Figure 4As shown, it is U-shaped in general. One end is used to connect with the towed device. This end is equipped with a tow hook ball head to enhance the multi-directional force bearing capacity of the trailer hook 2. The other end is used to connect with the mounting base 1. The whole is a series of cylindrical structures arranged in sequence along the vertical direction of the whole vehicle, with the cross-section gradually increasing. The receiving cavity 21 is coaxially arranged with the cylindrical structure, and the opening of the receiving cavity is equipped with a sealing part 22 to prevent moisture and other substances from entering the receiving cavity 21 and causing the pusher 211 or the receiving cavity wall to rust, thereby helping to improve the service life of the trailer hook 2.

[0081] Continue to combine Figure 5 as well as Figure 9 As shown, in some exemplary embodiments, the locking assembly includes a lock hole 215 on the cavity wall of the receiving cavity 21, a locking pin 2151 in the lock hole 215, a locking member 2112 on the push member 211, and a second elastic member 2113 between the locking member 2112 and the push member 211. The locking member 2112 can be inserted into the lock hole 215 under the force of the second elastic member 2113 to lock the push member 211. The locking pin 2151 is pushed against the cavity wall of the mounting cavity 11, which can push the locking member 2112 out of the lock hole 215 and release the lock on the push member 211.

[0082] Thus, the locking assembly includes a lock hole 215 on the cavity wall of the receiving cavity 21, a lock pin 2151 in the lock hole 215, a locking member 2112 on the push member 211, and a second elastic member 2113 between the locking member 2112 and the push member 211. Under the force of the second elastic member 2113, the locking member 2112 can be inserted into the lock hole 215 to lock the push member 211, effectively preventing the push member 211 from being accidentally unlocked due to misoperation, which helps to improve the locking reliability.

[0083] The locking pin 2151 is pushed against the cavity wall of the mounting cavity 11, which pushes the locking member 2112 out of the locking hole 215 and releases the lock on the pushing member 211. This allows the locking assembly to automatically unlock when the trailer hook 2 is inserted into the mounting cavity 11, so that the pushing member 211 can push the locking member into the locking groove 171 under the action of the first elastic member 214, thereby automatically locking the trailer hook 2 onto the mounting base 1. This makes the operation simple and quick, and helps to improve installation efficiency. In addition, it is worth mentioning that the main body 2116 of the pushing member 211 is also provided with a blind hole 2115 for accommodating the locking member 2112 and the second elastic member 2113.

[0084] In specific implementation, the mounting cavity 11 comprises three parts: a first cavity 111 for accommodating the locking seat 17, a second cavity 112 for limiting and positioning the trailer hook 2, and a third cavity 113 for guiding the trailer hook 2 into the second cavity 112, arranged sequentially along the vertical direction of the vehicle; a third cavity 113 for guiding the trailer hook 2 into the second cavity 112; and a third cavity 112. The top of the wall of the second cavity 112 is provided with a gradually tapering guide arc surface 1121, which pushes against the locking pin 2151, allowing the locking pin 2151 to push the locking member 2112 out of the locking hole 215, thereby releasing the locking of the pushing member 211. The third cavity 113 is a frustum-shaped structure with a cross-section that gradually increases along the vertical direction of the vehicle, so that the trailer hook can be guided into the second cavity 112 through its inclined surface.

[0085] In this embodiment, during installation, the trailer hook 2 is first inserted into the third cavity 113 at one end, which is connected to the mounting base 1. The third cavity 113 guides the trailer hook 2 into the second cavity 112 via its inclined surface. Then, by pushing upwards, the guide arc surface 1121 at the top of the second cavity 112 pushes against the locking pin 2151, causing the locking pin 2151 to push the locking member 2112 out of the locking hole 215, thus releasing the lock on the pushing member 211. At this point, the released pushing member 211, under the action of the first elastic member 214, pushes the locking ball 213 located in the mounting hole 212 into the locking groove 171 via the conical surface 2111, thereby completing the connection between the trailer hook 2 and the mounting base 1.

[0086] Combination Figures 10 to 13 As shown, in some exemplary embodiments, the anti-theft unit includes a lock cylinder 31 mounted on the trailer hitch 2 and a key 32 adapted to the lock cylinder 31. The unlocking unit includes a transmission member 3 that is tractively connected to the locking unit, a locking bar 33 slidably mounted on the transmission member 3, a locking ball 34 mounted in the transmission member 3, and a lock groove 15 mounted on the trailer hitch 2. The locking bar 33 is tractively connected to the lock cylinder 31. When the key 32 is operated, it can drive the locking bar 33 to slide through the lock cylinder 31 to drive the locking ball 34 into the lock groove 15 or to disengage the locking ball 34 from the lock groove 15.

[0087] This configuration, by providing a locking part between the trailer hook 2 and the mounting base 1, and by providing an unlocking part and an anti-theft part on the trailer hook 2, includes an anti-theft part comprising a lock cylinder 31 on the trailer hook 2 and a key 32 adapted to the lock cylinder 31. The unlocking part comprises a transmission component 3 connected to the locking part, a locking rod 33 slidably disposed on the transmission component 3, a locking ball 34 disposed in the transmission component 3, and a lock groove 15 disposed on the trailer hook 2. The locking rod 33 is connected to the lock cylinder 31. When the key 32 is operated, it can drive the locking rod 33 to slide through the lock cylinder 31, thereby driving the locking ball 34 into or out of the lock groove 15. In this way, the locking, unlocking, and anti-theft parts work together to lock and unlock the trailer hook 2 and the mounting base 1. While ensuring the trailer hook 2 is securely installed, the key 32's ability to control the state of the locking ball 34 by driving the locking rod 33 to slide through the lock cylinder 31 also improves the ease of use and anti-theft performance of the trailer hook 2.

[0088] In specific implementation, when the key 32 is used to operate the lock cylinder 31, the lock cylinder 31 drives the locking rod 33 to slide, causing the locking ball 34 to enter the lock groove 15. At this time, the unlocking part switches to the first state, that is, the locked state. In the locked state, the locking part cannot be operated, and the anti-theft part locks the trailer hook 2 and the mounting base 1, preventing the trailer hook 2 from being disassembled, thereby preventing theft and improving the anti-theft performance of the trailer hook 2. When the locking rod 33 slides, causing the locking ball 34 to disengage from the lock groove 15, the unlocking part switches to the second state, that is, the unlocked state. In the unlocked state, the locking part can be operated to disassemble the trailer hook 2 and the mounting base 1, making it easier to disassemble the trailer hook 2 and improving its ease of use, thus enhancing the user experience.

[0089] Continue to combine Figures 10 to 13 As shown, in some exemplary embodiments, the lock cylinder 31 is provided with a spiral groove 311, and the lock rod 33 is provided with a guide post 331 inserted into the spiral groove 311. When the key 32 is operated to drive the lock cylinder 31 to rotate, the guide post 331, guided by the spiral groove 311, can drive the lock rod 33 to slide relative to the transmission member 3.

[0090] With this configuration, by turning the key 32 to rotate the lock cylinder 31, the locking rod 33 can be slid under the guidance of the spiral groove 311, thus completing the action of the locking ball 34 entering or exiting the lock groove 15. This makes the operation simple and convenient. At the same time, its structure is simple and the locking is reliable, which can improve the anti-theft performance of the trailer hook 2.

[0091] The transmission component 3 is provided with an operating portion 35 that protrudes radially outward, and the operating portion 35 is located outside the receiving cavity 21. Thus, by providing the operating portion 35 that protrudes radially outward in the transmission component 3, user operation is facilitated, the operability of the transmission component 3 under harsh conditions is improved, and the user experience is further enhanced.

[0092] In specific implementation, the operating part 35 is petal-shaped with a composite spoke structure. The spokes adopt an asymmetrical radial layout, with long and short spokes arranged alternately to form a dual torque output area. The spoke surface has micro-convex textures to enhance grip in wet and slippery environments, and the rim thickness is gradually varied to accommodate different hand shapes. Meanwhile, the end face of the operating part 35 away from the trailer hook 2 has unlock and lock indicators to help users identify the locking status, thus improving the user experience. In actual operation, turning the key 32 from the lock indicator to the unlock indicator unlocks the anti-theft unit.

[0093] Furthermore, it is worth mentioning that the operating part 35 is also equipped with a lock cylinder dust cover 351. The lock cylinder dust cover 351 is made of rubber and is integrally injection molded with the operating part 35 to form a rope-like structure, which helps to prevent the lock cylinder dust cover 351 from being lost. At the same time, the lock cylinder dust cover 351 can effectively prevent dust, water and other impurities from entering the lock cylinder 31, avoiding problems such as rusting and jamming caused by moisture or dust accumulation, extending the service life of the lock cylinder 31 and ensuring the normal operation of the lock cylinder 31.

[0094] Similarly combined Figures 10 to 13 As shown, in some exemplary embodiments, the transmission member 3 is rotatably mounted on the trailer hook 2, and a third elastic member 36 is provided between the transmission member 3 and the trailer hook 2. When the unlocking part is in the second state, the transmission member 3 can slide outward from the trailer hook 2 under the force of the third elastic member 36, so that the locking ball 34 is misaligned from the locking groove 15. The advantage of this arrangement is that it facilitates the misalignment of the locking ball 34 from the locking groove 15, thereby making it easier for the user to operate the transmission member 3 and further improving the user experience.

[0095] In detail, the transmission component 3 is also equipped with a transmission gear 37 and a limiting block 38, while the extension section 2117 is equipped with a rack 2114, which meshes with the transmission gear 37. During operation, when the unlocking part switches to the second state (unlocked state), the transmission component 3 slides outwards towards the trailer hook 2 under the force of the third elastic member 36, causing the locking ball 34 to disengage from the locking groove 15. Rotating the operating part 35 causes the transmission component 3 to rotate. At this time, the engagement of the transmission gear 37 and the rack 2114 converts the rotation of the transmission component 3 into the linear motion of the pushing member 211, thereby allowing the locking member to disengage from the locking groove 171 and unlocking the trailer hook 2. Continuing to rotate the transmission component 3, when it reaches the limiting position of the limiting block 38, the locking assembly can re-lock the pushing member 211. At this point, the trailer hook 2 can be removed from the mounting cavity 11, completing disassembly and facilitating subsequent installation. Figures 14 to 17 As shown, in some exemplary embodiments, the mounting base 1 is provided with a power supply bracket 4, and a locking unit is provided between the power supply bracket 4 and the mounting base 1. The power supply bracket 4 is rotatably mounted on the mounting base 1, and the power supply bracket 4 is provided with a mounting part for mounting a socket. The locking unit is used to lock the power supply bracket 4 on the mounting base 1, and the locking unit has multiple locking positions.

[0096] This configuration, utilizing the rotatable power supply bracket 4 in conjunction with the multi-position locking unit, provides reliable support for the power supply setup. Furthermore, the multiple locking positions allow for adjustment of the power supply bracket 4's working position according to usage needs, thereby improving ease of use and enhancing the user experience.

[0097] Combination Figures 14 to 17 As shown, in some exemplary embodiments, the locking unit includes a groove 411 on the mounting sleeve 41 and a fourth elastic member 42 between the mounting sleeve 41 and the rotating shaft 12. The grooves 411 are a plurality of grooves arranged at intervals along the circumference of the mounting sleeve 41. Under the force of the fourth elastic member 42, the rotating shaft 12 can be engaged into one of the grooves 411 and lock the power take-up bracket 4 at the locking position corresponding to the groove 411.

[0098] This design, utilizing the rotational engagement between the pivot 12 and the mounting sleeve 41, along with the multi-groove locking structure 411, allows for flexible rotation of the power supply bracket 4 while simultaneously locking it in different positions using the multiple grooves 411. This enables adjustment of the power supply bracket 4's working position according to usage requirements, improving the user experience. Furthermore, the simple and reliable engagement structure between the grooves 411 and the elastic element effectively reduces loosening or displacement during use, thus enhancing the overall structural reliability of the power supply bracket 4.

[0099] In a specific implementation, the power supply bracket 4 of this embodiment further includes a dust cap 43 screwed between the power supply brackets 4, a locking piece 44 for limiting the rotating shaft 12, and a gasket 45 for sealing the mounting sleeve 41. The gasket 45 is disposed between the locking piece 44 and the mounting sleeve 41.

[0100] It is worth noting that, regarding this embodiment, based on the above exemplary implementations, in specific implementation, as a preferred embodiment, it is still... Figures 1 to 17 As shown, it generally includes a mounting base 1, a trailer hitch 2 detachably mounted on the mounting base 1, and a locking part provided between the trailer hitch 2 and the mounting base 1.

[0101] The mounting base 1 has a mounting cavity 11. The trailer hook 2 is provided with an unlocking part and an anti-theft part. When the trailer hook 2 is inserted into the mounting cavity 11, the locking part can lock the trailer hook 2 onto the mounting base 1. The anti-theft part and the unlocking part are linked and can drive the unlocking part to switch between a first state and a second state. In the first state, the unlocking part is prohibited from unlocking. In the second state, the unlocking part is driven by external force to release the locking part from locking the trailer hook 2.

[0102] The locking part includes a locking groove 171 on the wall of the mounting cavity 11, a pusher 211, a locking member and a locking assembly on the trailer hook 2, and a first elastic member 214 between the locking member and the unlocking part. The pusher 211 is slidably disposed in the receiving cavity 21 on the trailer hook 2. The locking member is disposed on the wall of the receiving cavity 21 and is located on the sliding path of the pusher 211. The locking assembly locks the pusher 211 on the trailer hook 2. When the trailer hook 2 is inserted into the mounting cavity 11, the locking assembly can release the locking of the pusher 211. After the locking is released, the pusher 211 can push the locking member into the locking groove 171 under the force of the first elastic member 214 to lock the trailer hook 2. The cavity wall of the cavity 21 is provided with multiple mounting holes 212. The locking member is a locking ball 213 provided in the corresponding mounting hole 212. The locking groove 171 is an annular groove provided along the circumference of the mounting cavity 11. The pusher 211 has a conical surface 2111 at one end for pushing the locking member. The pusher 211 pushes the locking member into the locking groove 171 through the conical surface 2111.

[0103] The locking assembly includes a lock hole 215 on the cavity wall of the receiving cavity 21, a locking pin 2151 in the lock hole 215, a locking member 2112 on the push member 211, and a second elastic member 2113 between the locking member 2112 and the push member 211. The locking member 2112 can be inserted into the lock hole 215 under the force of the second elastic member 2113 to lock the push member 211. The locking pin 2151 is pushed by the cavity wall of the mounting cavity 11, which can push the locking member 2112 out of the lock hole 215 and release the lock on the push member 211. The anti-theft unit includes a lock cylinder 31 mounted on the trailer hitch 2 and a key 32 adapted to the lock cylinder 31. The unlocking unit includes a transmission member 3 that is pulsably connected to the locking unit, a locking rod 33 slidably mounted on the transmission member 3, a locking ball 34 mounted in the transmission member 3, and a lock groove 15 mounted on the trailer hitch 2. The locking rod 33 is pulsably connected to the lock cylinder 31. When the key 32 is operated, it can drive the locking rod 33 to slide through the lock cylinder 31, so as to drive the locking ball 34 into the lock groove 15 or to disengage the locking ball 34 from the lock groove 15.

[0104] The lock cylinder 31 has a spiral groove 311, and the lock rod 33 has a guide post 331 that inserts into the spiral groove 311. When the key 32 is operated to drive the lock cylinder 31 to rotate, the guide post 331, guided by the spiral groove 311, can drive the lock rod 33 to slide relative to the transmission member 3. The transmission member 3 has an operating part 35 that protrudes radially outward and is located outside the receiving cavity 21. The transmission member 3 is rotatably mounted on the trailer hook 2, and a third elastic member 36 is provided between the transmission member 3 and the trailer hook 2. When the unlocking part is in the second state, the transmission member 3 can slide outward from the trailer hook 2 under the force of the third elastic member 36, so that the locking ball 34 is misaligned from the lock groove 15. The mounting base 1 is provided with a power supply bracket 4, and a locking unit is provided between the power supply bracket 4 and the mounting base 1. The power supply bracket 4 is rotatably mounted on the mounting base 1, and the power supply bracket 4 is provided with a mounting part for installing a socket. The locking unit is used to lock the power supply bracket 4 on the mounting base 1, and the locking unit has multiple locking positions.

[0105] In the preferred embodiment of the mounting bracket described above, the specific configuration and arrangement of the locking part, the anti-theft part, and the transmission component 3 can still be referred to the descriptions in the above exemplary embodiments. Furthermore, in this preferred embodiment, the beneficial effects brought about by the design of the locking part, the anti-theft part, and the transmission component 3 can also be referred to the descriptions in the above exemplary embodiments.

[0106] The trailer hitch 2 in this embodiment adopts the above design. A locking part is provided between the hitch and the mounting base 1, and an unlocking part and an anti-theft part are provided on the trailer hitch 2. The anti-theft part and the unlocking part are linked, and the unlocking part can release the locking part from the trailer hitch 2 under external force. Thus, the trailer hitch 2 can be locked onto the mounting base 1 by inserting it into the mounting cavity 11, facilitating disassembly. Furthermore, by driving the unlocking part to switch between a first state where unlocking is prohibited and a second state where unlocking is permitted, the anti-theft performance of the trailer hitch 2 is improved, preventing accidental detachment or loss of the trailer hitch 2, thus helping to ensure the safety of vehicle accessories and improving the user experience.

[0107] In practical use, based on the unlocking and locking principles described above, the trailer hook 2 of this embodiment is operated by inserting the appropriate key 32 and rotating it to switch the anti-theft unit from the first state to the second state, thus unlocking the anti-theft unit. The user can pull the operating part 35 outwards from the trailer hook 2 to disengage the locking ball 34 from the lock groove 15. Then, rotating the operating part 35 and pulling down the trailer hook 2 will separate the trailer hook 2 from the mounting base 1. Finally, the dust cover 5 of the mounting cavity is engaged with the mounting base 1 to complete the disassembly.

[0108] During installation, first, insert the matching key 32 and rotate it to switch the anti-theft unit from the first state to the second state, thus unlocking it. Then, insert the trailer hook 2 into the mounting cavity 11, and locking can be achieved by referring to the locking principle described above. After locking, rotate the key 32 in reverse to switch the anti-theft unit from the second state to the first state, making the anti-theft unit active. At this time, the operating part 35 cannot be operated, thereby achieving anti-theft of the trailer hook 2.

[0109] It should be noted that the elastic components mentioned in this embodiment are all springs well known to those skilled in the art, and will not be described in detail here.

[0110] An embodiment of the second aspect of this application provides a vehicle having a trailer hitch assembly as described above in its body, to enable the vehicle to tow and attach external equipment.

[0111] In this embodiment, the vehicle is equipped with the trailer hitch assembly described in the first aspect embodiment. This not only makes the trailer hitch 2 easy to install and remove, but also improves the anti-theft performance of the trailer hitch 2. It helps prevent the trailer hitch 2 from being maliciously disassembled, ensures the safety of vehicle parts, and thus improves the user experience of the vehicle and enhances its market competitiveness.

[0112] The above descriptions are merely some embodiments of this application and are not intended to limit this application. The technical features or structures in the foregoing different embodiments can be arbitrarily combined to form other specific technical solutions as needed. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of the claims of this application.

Claims

1. A trailer hitch assembly, characterized in that: It includes a mounting base (1), a trailer hitch (2) detachably mounted on the mounting base (1), and a locking part disposed between the trailer hitch (2) and the mounting base (1); The mounting base (1) has a mounting cavity (11) formed inside. The trailer hook (2) is provided with an unlocking part and an anti-theft part. When the trailer hook (2) is inserted into the mounting cavity (11), the locking part can lock the trailer hook (2) onto the mounting base (1). The anti-theft unit is linked to the unlocking unit and can drive the unlocking unit to switch between a first state and a second state. In the first state, the unlocking unit is prohibited from unlocking. In the second state, the unlocking unit is driven by external force to release the locking unit from locking the trailer hook (2).

2. The trailer hitch assembly according to claim 1, characterized in that: The locking part includes a locking groove (171) provided on the wall of the mounting cavity (11), a pusher (211), a locking member and a locking assembly provided on the trailer hook (2), and a first elastic member (214) provided between the locking member and the unlocking part. The pusher (211) is slidably disposed in the receiving cavity (21) on the trailer hook (2), the locking member is disposed on the cavity wall of the receiving cavity (21), and the locking member is located on the sliding path of the pusher (211); The locking assembly locks the pusher (211) onto the trailer hook (2). When the trailer hook (2) is inserted into the mounting cavity (11), the locking assembly can release the lock on the pusher (211). After the lock is released, the pusher (211) can push the locking member into the locking groove (171) under the force of the first elastic member (214) to lock the trailer hook (2).

3. The trailer hitch assembly according to claim 2, characterized in that: The cavity wall of the receiving cavity (21) is provided with a plurality of mounting holes (212), the locking member is a locking ball (213) provided in the corresponding mounting hole (212), and the locking groove (171) is an annular groove provided along the circumference of the mounting cavity (11); and / or, The pusher (211) is used to push one end of the locking member, which has a conical surface (2111). The pusher (211) pushes the locking member into the locking groove (171) through the conical surface (2111).

4. The trailer hitch assembly according to claim 2, characterized in that: The locking assembly includes a lock hole (215) on the cavity wall of the receiving cavity (21), a lock pin (2151) in the lock hole (215), a locking member (2112) on the push member (211), and a second elastic member (2113) between the locking member (2112) and the push member (211). The locking member (2112) can be inserted into the lock hole (215) under the force of the second elastic member (2113) to lock the push member (211). The locking pin (2151) is pushed by the cavity wall of the mounting cavity (11) and can push the locking member (2112) out of the lock hole (215) and release the lock on the push member (211).

5. The trailer hitch assembly according to claim 2, characterized in that: The anti-theft part includes a lock cylinder (31) provided on the trailer hook (2) and a key (32) adapted to the lock cylinder (31). The unlocking part includes a transmission member (3) that is pulsatorically connected to the locking part, a lock bar (33) slidably provided on the transmission member (3), a locking ball (34) provided in the transmission member (3), and a lock groove (15) provided on the trailer hook (2). The locking bar (33) is connected to the lock cylinder (31) in a transmission manner. When the key (32) is operated, it can drive the locking bar (33) to slide through the lock cylinder (31) to drive the locking ball (34) into the lock groove (15) or to disengage the locking ball (34) from the lock groove (15).

6. The trailer hitch assembly according to claim 5, characterized in that: The lock cylinder (31) is provided with a spiral groove (311), and the lock rod (33) is provided with a guide post (331) inserted into the spiral groove (311). When the key (32) is operated to drive the lock cylinder (31) to rotate, the guide post (331), guided by the spiral groove (311), can drive the lock rod (33) to slide relative to the transmission member (3); and / or, The transmission component (3) is provided with an operating part (35) that protrudes radially outward, and the operating part (35) is located outside the receiving cavity (21).

7. The trailer hitch assembly according to claim 5, characterized in that: The transmission component (3) is rotatably mounted on the trailer hook (2), and a third elastic component (36) is provided between the transmission component (3) and the trailer hook (2). When the unlocking part is in the second state, the transmission member (3) can slide outward from the trailer hook (2) under the force of the third elastic member (36) so that the locking ball (34) is offset from the locking groove (15).

8. The trailer hitch assembly according to any one of claims 1 to 7, characterized in that: The mounting base (1) is provided with a power-collecting bracket (4), and a locking unit is provided between the power-collecting bracket (4) and the mounting base (1); The power supply bracket (4) is rotatably mounted on the mounting base (1), and the power supply bracket (4) is provided with a mounting part for mounting a socket. The locking unit is used to lock the power supply bracket (4) on the mounting base (1), and the locking unit has multiple locking positions.

9. The trailer hitch assembly according to claim 8, characterized in that: The mounting base (1) is provided with a rotating shaft (12), and the power supply bracket (4) is rotatably mounted on the rotating shaft (12) through the mounting sleeve (41); The locking unit includes a groove (411) provided on the mounting sleeve (41) and a fourth elastic element (42) provided between the mounting sleeve (41) and the rotating shaft (12). The grooves (411) are arranged in a plurality of spaced intervals along the circumference of the mounting sleeve (41). Under the action of the fourth elastic member (42), the rotating shaft (12) can be inserted into one of the grooves (411) and lock the power taking bracket (4) at the locking position corresponding to the groove (411).

10. A vehicle, characterized in that: The vehicle is equipped with a trailer hitch assembly as described in any one of claims 1 to 9.

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