Trailer hitch and vehicle

Abstract

The application provides a trailer hook and a car. The trailer hook comprises a hook body, a main shaft, a sliding block, at least one locking piece, a driving shaft and a driving piece. The hook body is provided with at least one locking groove, the main shaft is provided with at least one main shaft hole, the sliding block is provided with at least one containing groove, the at least one locking piece is located in the at least one locking groove and the at least one main shaft hole, the driving shaft is installed in the central hole and passes through the sliding block, and the driving piece is connected with the driving shaft. When the hook body is in an unlocking state, the at least one locking piece is located in the at least one main shaft hole and the at least one containing groove. When the hook body is in a locking state, the at least one locking piece is located in the at least one locking groove and the at least one main shaft hole. The driving shaft and the sliding block of the application make the locking piece move to realize the locking and unlocking of the hook body. When unlocking, the rotation of the hook body by a preset angle is controlled, the trailer hook is suitable for different working conditions, the functionality and practicability of the trailer hook are improved, the structure of the trailer hook is simple and not easy to be damaged, and the travel demand of passengers is ensured.

Description

Technical Field

[0001] This application relates to the field of automotive technology, and more particularly to a trailer hitch and an automobile. Background Technology

[0002] With the development of technology, the demand and application of automobiles are gradually increasing. At the same time, automobile trailer hitches have become equipment that needs attention and optimization. However, existing trailer hitches are prone to shaking during use, are not stable during use, and cannot be adapted to different working conditions or meet the different needs of passengers. Furthermore, trailer hitches that can unlock and lock have complex structures that are prone to damage, reducing the functionality and practicality of trailer hitches and failing to guarantee the travel needs of passengers. Summary of the Invention

[0003] This application provides a trailer hitch and a vehicle, which can solve at least some of the above-mentioned technical problems.

[0004] In a first aspect, this application provides a trailer hitch for use in a vehicle, comprising:

[0005] The hook body is provided with at least one locking groove;

[0006] The main shaft, the hook body is fitted onto the main shaft, the main shaft is provided with at least one main shaft hole, the at least one main shaft hole is provided corresponding to at least a portion of the at least one locking groove;

[0007] A slider is movably mounted in the center hole of the spindle, and the slider is provided with at least one receiving groove, which corresponds to the at least one spindle hole.

[0008] At least one locking element is located within the at least one locking groove and the at least one spindle hole;

[0009] A drive shaft, which is installed in the central hole and passes through the slider;

[0010] A driving member is connected to the driving shaft and is used to drive the driving shaft to rotate, so that the driving shaft moves the slider along a first direction or a second direction during rotation, thereby driving the at least one locking member to move between the at least one spindle hole, the at least one receiving groove and the at least one locking groove, wherein the first direction and the second direction are two directions based on the length direction of the slider, the first direction is towards the driving member, and the second direction is the opposite direction of the first direction;

[0011] The hook body has an unlocked state and a locked state. When the hook body is in the unlocked state, the at least one locking member is located in the at least one spindle hole and the at least one receiving groove.

[0012] When the hook body is in the locked state, the at least one locking member is located in the at least one locking groove and the at least one spindle hole.

[0013] Secondly, this application provides a vehicle, comprising:

[0014] The aforementioned trailer hitch.

[0015] This application provides a trailer hitch and an automobile. The trailer hitch is applied to an automobile and includes a hook body, a main shaft, a slider, at least one locking element, a drive shaft, and a drive member. The hook body is provided with at least one locking groove and is fitted onto the main shaft. The main shaft is provided with at least one main shaft hole, which corresponds to at least a portion of the locking groove. The slider is movably mounted in the central hole of the main shaft and is provided with at least one receiving groove, which corresponds to the at least one main shaft hole. The at least one locking element is located within the at least one locking groove and the at least one main shaft hole. The drive shaft is mounted in the central hole and passes through the slider. The drive member is connected to the drive shaft and is used to drive the drive shaft. The drive shaft rotates, causing the slider to move along a first or second direction during rotation, thereby driving at least one locking member to move between at least one main shaft hole, at least one receiving groove, and at least one locking groove. The first and second directions are two directions based on the length direction of the slider, with the first direction facing the drive member and the second direction opposite to the first direction. The hook body has an unlocked state and a locked state. When the hook body is in the unlocked state, the at least one locking member is located within the at least one main shaft hole and the at least one receiving groove. When the hook body is in the locked state, the at least one locking member is located within the at least one locking groove and the at least one main shaft hole. The vehicle includes the aforementioned trailer hitch. This application uses the drive shaft and the slider to move the locking member to unlock and lock the hook. Locking the hook improves the stability when using it. When unlocking, the hook rotates at a preset angle, making the trailer hook suitable for different working conditions and meeting the different needs of passengers. This improves the functionality and practicality of the trailer hook. Furthermore, the trailer hook has a simple structure, is not easily damaged, and ensures the travel needs of passengers. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic block diagram of a car in an embodiment of this application.

[0018] Figure 2 This is a three-dimensional structural diagram of a trailer hitch in one embodiment of this application.

[0019] Figure 3 As shown in one embodiment of this application Figure 2 Exploded view.

[0020] Figure 4 This is a three-dimensional structural diagram of the trailer hitch in another state according to one embodiment of this application.

[0021] Figure 5 As shown in one embodiment of this application Figure 4 A three-dimensional structural diagram of the hook body at point B.

[0022] Figure 6 As shown in one embodiment of this application Figure 2 A partial structural diagram of the locked state at point A.

[0023] Figure 7 As shown in one embodiment of this application Figure 6 Cross-sectional view at point C.

[0024] Figure 8 As shown in one embodiment of this application Figure 6 Cross-sectional view at point D.

[0025] Figure 9 As shown in one embodiment of this application Figure 2 A partial structural diagram of the unlocked state at point A.

[0026] Figure 10 As shown in one embodiment of this application Figure 9 Cross-sectional view at point E.

[0027] Figure 11 As shown in one embodiment of this application Figure 9 Cross-sectional view at point F.

[0028] Figure 12 This is a three-dimensional structural diagram of the drive plate and hook cover plate in one embodiment of this application.

[0029] Figure 13This is a schematic diagram of the protruding post in the cover plate groove in one embodiment of this application.

[0030] Icon labels:

[0031] Car-100;

[0032] Trailer hook-1;

[0033] Hook body - 11; Locking groove - 111; Hook body hole - 112; First connecting hole - 113; Main shaft - 12; Main shaft hole - 121; Center hole - 122; First end - 123; Second end - 124; Opening - 125; Slider - 13; Receiving groove - 131; Slide groove - 132; Bottom wall - 133; Supporting inclined surface - 134; Locking element - 14; Drive shaft - 15; Protrusion - 151; First direction - 152; Second direction - 153; Elastic element - 16; Drive plate - 17; Protruding post - 171; Hook body cover plate - 18; Cover plate groove - 181; Second connecting hole - 182; Mounting seat - 19; First mounting part - 191; Second mounting part - 192; Fastener - 20; Mounting hole - 21; Insertion hole - 22; Height direction - 23. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0035] In the description of the embodiments of this application, it should be understood that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. The term "connection" in this application, unless otherwise specified, primarily refers to a physical structural connection; however, if specified, it may also include direct or indirect connections. The terms "first" and "second" in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the term "comprising" and any variations thereof are intended to cover non-exclusive inclusion.

[0036] Please see Figure 1 , Figure 1 This is a schematic block diagram of a vehicle 100 in an embodiment of this application. The vehicle 100 includes a trailer hitch 1.

[0037] The trailer hook 1 is used to connect the vehicle 100 to a trailer or other towing equipment, providing traction and connectivity between the vehicles to realize the towing and transportation functions of the vehicle 100.

[0038] In some embodiments, the vehicle 100 further includes an input module for outputting an operation signal, and the controller of the trailer hitch 1 receives the operation signal to control the movement of the drive component of the trailer hitch 1.

[0039] Thus, by controlling the movement of the drive component of the trailer hook 1 through the input module, the user can adjust the state of the trailer hook 1 as needed and adapt it to different working conditions of the vehicle 100, thereby improving the applicability of the trailer hook 1.

[0040] In some embodiments, the input module is an operable device such as a button, touch screen, remote control, or voice input device.

[0041] In other embodiments, the input module may display the status information of the trailer hook 1, wherein the status information includes the working state of the trailer hook 1 and the rotation angle of the internal components of the trailer hook 1, and the working state includes the unfolded state and the retracted state.

[0042] Please see Figure 2 , Figure 3 , Figure 6 , Figure 7 and Figure 8 , Figure 2 This is a three-dimensional structural diagram of the trailer hook 1 in one embodiment of this application. Figure 3 As shown in one embodiment of this application Figure 2 Explosion diagram, Figure 6 As shown in one embodiment of this application Figure 2 A partial structural diagram of the locked state at point A. Figure 7 As shown in one embodiment of this application Figure 6 Cross-sectional view at point C, Figure 8 As shown in one embodiment of this application Figure 6Cross-sectional view at point D. The trailer hitch 1 is applied to a vehicle 100. The trailer hitch 1 includes a hook body 11, a main shaft 12, a slider 13, at least one locking element 14, a drive shaft 15, and a drive element (not shown in the figure). The hook body 11 is provided with at least one locking groove 111. The hook body 11 is fitted onto the main shaft 12. The main shaft 12 is provided with at least one main shaft hole 121. The at least one main shaft hole 121 is provided corresponding to at least a portion of the at least one locking groove 111. The slider 13 is movably mounted in the central hole 122 of the main shaft 12. The slider 13 is provided with at least one receiving groove 131. The at least one receiving groove 131 is provided corresponding to the at least one main shaft hole 121. The at least one locking element 14 is located in the at least one locking groove 111 and the at least one main shaft hole 121. The drive shaft 15 is mounted in the central hole 122 and passes through the slider 13. The drive element is connected to the drive shaft. 15. The driving member is used to drive the driving shaft 15 to rotate, causing the slider 13 to move along a first direction 152 or a second direction 153, so as to drive the at least one locking member 14 to move between the at least one spindle hole 121, the at least one receiving groove 131 and the at least one locking groove 111, wherein the first direction 152 and the second direction 153 are two directions based on the length direction of the slider 13, the first direction 152 is towards the driving member, and the second direction 153 is the opposite direction of the first direction 152. The hook body 11 has an unlocked state and a locked state. When the hook body 11 is in the unlocked state, the at least one locking member 14 is located in the at least one spindle hole 121 and the at least one receiving groove 131. When the hook body 11 is in the locked state, the at least one locking member 14 is located in the at least one locking groove 111 and the at least one spindle hole 121.

[0043] Thus, the drive shaft 15 and the slider 13 enable the at least one locking member 14 to unlock and lock the hook body 11. Locking the hook body 11 can improve the stability of using the hook body 11. Controlling the rotation of the hook body 11 by a preset angle during unlocking allows the trailer hook 1 to be suitable for different working conditions and meet the different needs of passengers, improving the functionality and practicality of the trailer hook 1. Moreover, the trailer hook 1 has a simple structure, is not easily damaged, and ensures the travel needs of passengers.

[0044] Among them, such as Figures 6-8As shown, when the at least one spindle hole 121 is connected to the at least one locking groove 111, a cavity for accommodating the locking member 14 can be formed between each spindle hole 121 and the corresponding connected locking groove 111. Since a part of the locking member 14 is located in the locking groove 111 and another part is located in the spindle hole 121, and the slider 13 also applies pressure to the locking member 14 to restrict its movement, the locking member 14 can restrict the relative movement between the spindle hole 121 and the locking groove 111, thereby putting the hook body 11 in a locked state.

[0045] Please refer to the following: Figure 4 , Figure 4 This is a three-dimensional structural diagram of the trailer hitch 1 in one embodiment of this application in another state. In some embodiments, such as... Figure 2 and Figure 4 As shown, when the preset angle is 180°, the working state of the hook 11 is divided into an extended state and a retracted state. When unlocking, the hook 11 rotates 180° on the main shaft 12 to transition from the extended state to the retracted state, or vice versa. After rotating 180°, the hook 11 is locked, preventing it from rotating on the main shaft 12, thereby improving the stability of the trailer hook 1. Figure 2 This refers to the deployed state of the trailer hitch 1, in which the hook body 11 protrudes from the chassis of the vehicle 100 to perform the connecting function of the trailer hitch 1. Figure 4 The tow hook 1 is in its retracted state, meaning the hook body 11 is hidden under the chassis of the vehicle 100, avoiding interference with the normal driving of the vehicle 100 and keeping the vehicle 100 neat and aesthetically pleasing. The hook body 11 has multiple locking grooves 111, the main shaft 12 has multiple main shaft holes 121, and the multiple main shaft holes 121 correspond to at least a portion of the multiple locking grooves 111. The slider 13 has multiple receiving grooves 131, and the multiple receiving grooves 131 correspond to the multiple main shaft holes 121. At least one locking member 14 is located within at least one locking groove 111 and at least one corresponding main shaft hole 121.

[0046] In other embodiments, the hook 11 rotates at a preset angle of 120°.

[0047] In other embodiments, the hook 11 rotates at a preset angle of 60°.

[0048] In other embodiments, the preset angle of rotation of the hook body 11 is 360°, in which case a locking member 14, a locking groove 111, a main shaft hole 121 and a receiving groove 131 can be provided, or multiple locking members 14, multiple locking grooves 111, multiple main shaft holes 121 and multiple receiving grooves 131 can be provided respectively, which is not limited here.

[0049] It is understood that the preset angle at which the hook body 11 can rotate is not limited to the preset angle in the above embodiment. The trailer hook 1 can be designed according to actual needs, and no limitation is made here.

[0050] In some embodiments, the hook body 11 is provided with six locking grooves 111, the main shaft 12 is provided with three main shaft holes 121, and the slider 13 is provided with three receiving grooves 131.

[0051] It is understood that the number of locking members 14 can be set as needed, and the number of locking grooves 111, spindle holes 121 and receiving grooves 131 can be set according to the preset angle and the number of locking members 14, which is not limited here.

[0052] In some embodiments, such as Figure 3 As shown, the hook body 11 includes a hook body hole 112, and the main shaft 12 passes through the hook body hole 112 to fit the hook body 11 onto the main shaft 12.

[0053] Please refer to the following: Figures 9-11 , Figure 9 As shown in one embodiment of this application Figure 2 A partial structural diagram of the unlocked state at point A. Figure 10 As shown in one embodiment of this application Figure 9 Cross-sectional view at point E Figure 11 As shown in one embodiment of this application Figure 9 The cross-sectional view at point F. The design scheme, in which the drive shaft 15 is rotated by the drive member, causing the slider 13 to move along a first direction 152 or a second direction 153, and driving at least one locking member 14 to move between at least one main shaft hole 121, at least one receiving groove 131, and at least one locking groove 111, simplifies the structure of the trailer hook 1, facilitates unlocking and locking of the hook body 11, and improves the functionality and practicality of the trailer hook 1.

[0054] As previously described, the drive shaft 15 drives the at least one locking member 14 to move from the at least partial locking groove 111 and the at least one spindle hole 121 to the at least one spindle hole 121 and the at least one receiving groove 131. At this time, the hook body 11 is in the unlocked state. After the hook body 11 rotates at a preset angle on the spindle 12, the at least one locking member 14 moves from the at least one spindle hole 121 and the at least one receiving groove 131 to the at least partial locking groove 111 and the at least one spindle hole 121, so that the hook body 11 is in the locked state.

[0055] In some embodiments, the driving element is a motor connected to the drive shaft 15.

[0056] As previously described, when the drive shaft 15 moves the slider 13 along the first direction 152, the slider 13 moves to the position where the at least one receiving groove 131 corresponds to the position communicating with the at least one main shaft hole 121. At this time, the locking member 14 jumps out from the locking groove 111 so that it partially enters the receiving groove 131, thereby the locking member 14 will not restrict the movement of the hook body 11. The hook body 11 is in the unlocked state and can rotate on the main shaft 12. When the drive shaft 15 moves the slider 13 along the second direction 153... When the slider 13 moves to a position where the at least one receiving groove 131 is offset from the at least one main shaft hole 121, part of the locking member 14 is pressed from the receiving groove 131 into the locking groove 111 by the slider 13. At this time, the locking member 14 restricts the movement of the hook body 11, so that the hook body 11 is locked and cannot rotate on the main shaft 12. The slider 13 will not rotate with the rotation of the drive shaft 15, but will only move along the first direction 152 or the second direction 153.

[0057] In other embodiments, when the drive shaft 15 moves the slider 13 along the first direction 152, the slider 13 moves to the position of the at least one receiving groove 131 corresponding to the position of the at least one spindle hole 121. At this time, part of the locking member 14 will not enter the receiving groove 131, but will still be located in the locking groove 111 and the spindle hole 121. However, since the locking member 14 is movable in the height direction 23 of the slider 13, when the hook body 11 rotates, the locking member 14 will not restrict the movement of the hook body 11, and the hook body 11 will be in an unlocked state and can rotate on the spindle 12.

[0058] In some embodiments, such as Figure 3 , Figure 7 and Figure 10As shown, the main shaft 12 includes a first end 123 and a second end 124. The trailer hook 1 also includes an elastic element 16, which is located inside the main shaft 12 and between the slider 13 and the second end 124 of the main shaft 12. When the elastic element 16 is compressed by the slider 13 and is in a compressed state, the at least one receiving groove 131 is respectively connected to the at least one main shaft hole 121. The elastic element 16 is also used to push the slider 13 along the second direction 153 by elastic restoring force during the process of returning from the compressed state to the natural state, so that the at least one receiving groove 131 is respectively misaligned with the at least one main shaft hole 121, so as to press the at least one locking element 14 from the at least one main shaft hole 121 and the at least one receiving groove 131 into the at least one locking groove 111 and the at least one main shaft hole 121.

[0059] Thus, the elastic restoring force of the elastic element 16 pushes the slider 13 to move along the second direction 153 to reset, and the at least one receiving groove 131 is offset from the at least one main shaft hole 121, thereby causing the slider 13 to apply pressing pressure to the locking element 14. This reset design simplifies the structure of the trailer hook 1, facilitates production and reduces production costs, and makes it easy to replace internal parts.

[0060] As mentioned above, Figures 9-11 As shown, when the drive shaft 15 moves the slider 13 along the first direction 152, the slider 13 moves to the position where the at least one receiving groove 131 communicates with the at least one main shaft hole 121 according to the thrust applied by the drive shaft 15. At this time, the elastic element 16 changes from its natural state to a compressed state due to the thrust of the slider 13, and the hook 11 is in an unlocked state and can rotate on the main shaft 12. Figures 6-8 As shown, when the drive shaft 15 no longer applies a pushing force to the slider 13, the elastic element 16 needs to return from the compressed state to the natural state. Therefore, the elastic element 16 will generate an elastic restoring force to push the slider 13 to move along the second direction 153. Under the action of the elastic restoring force of the elastic element 16, the slider 13 will gradually move to the initial position along the second direction 153, thereby causing the at least one receiving groove 131 to be misaligned with the at least one main shaft hole 121. At this time, part of the locking element 14 is pressed from the receiving groove 131 into the locking groove 111 by the slider 13, so that the hook body 11 is in a locked state and cannot rotate on the main shaft 12.

[0061] In other embodiments, the distance the slider 13 can move along the first direction 152 is limited by the ultimate compression of the elastic element 16 itself. The ultimate compression of the elastic element 16 is just enough to move the slider 13 to the position where the at least one receiving groove 131 is connected to the at least one spindle hole 121. At this time, even if the drive shaft 15 still exerts a thrust on the slider 13, the slider 13 can no longer move under the limitation of the ultimate compression of the elastic element 16.

[0062] It is understood that the elastic element 16 can be, but is not limited to, a spring, as long as it has a limit of compression and can generate elastic restoring force.

[0063] In some embodiments, such as Figure 7 and Figure 10 As shown, the drive shaft 15 has a protrusion 151 at a portion of its circumference near one end of the drive member, and the slider 13 has a recessed groove 132 at one end of its circumference. The bottom wall 133 of the groove 132 has a retaining inclined surface 134 at a portion of its circumference. During the rotation of the drive shaft 15, the protrusion 151 contacts the retaining inclined surface 134 to push the slider 13 to move along the first direction 152. When the drive shaft 15 continues to rotate, causing the protrusion 151 to approach the bottom wall 133 of the groove 132 other than the retaining inclined surface 134, the slider 13 remains stationary or the elastic restoring force of the elastic member 16 pushes the slider 13 to move along the second direction 153.

[0064] Thus, the movement of the slider 13 is controlled by the cooperation of the protrusion 151 and the slide groove 132, and the slider 13 is reset by the elastic element 16, which makes the structure of the trailer hook 1 simpler, facilitates unlocking and locking of the hook body 11, and improves the functionality and practicality of the trailer hook 1.

[0065] In some embodiments, the abutting inclined surface 134 includes a first inclined surface and a second inclined surface. The first inclined surface connects to the second inclined surface. The slope of the first inclined surface gradually increases from zero to an optimal slope at the first dividing line, and maintains the optimal slope from the first dividing line to the connection point of the second and first inclined surfaces. The slope of the second inclined surface maintains the optimal slope from the connection point to the second dividing line, and gradually decreases to zero from the second dividing line. The optimal slope is the optimal thrust applied by the drive shaft 15 to the slider 13, which moves the slider 13 to a position where the at least one receiving groove 131 communicates with the at least one main shaft hole 121.

[0066] As previously described, when the protrusion 151 begins to contact the first inclined surface, the slider 13 is in a ready-to-move state. As the drive shaft 15 rotates and the slope of the first inclined surface increases, the protrusion 151 pushes the slider 13 to move along the first direction 152 until the protrusion 151 rotates to the first dividing line. At least one receiving groove 131 is connected to at least one main shaft hole 121. At this time, the hook body 11 is in an unlocked state, the drive shaft 15 continues to rotate, and the hook body 11 is always in an unlocked state and rotates on the main shaft 12 with the drive shaft 15.

[0067] The drive shaft 15 continues to rotate, and the protrusion 151 continues to move on the second inclined plane. When the protrusion 151 exceeds the second dividing line, as the slope of the second inclined plane gradually decreases and the protrusion 151 gradually approaches the bottom wall 133 of the slide groove 132 (excluding the abutting inclined plane 134), the thrust of the protrusion 151 on the slider 13 also gradually decreases. However, since the angle of rotation of the hook body 11 is between 120° and 180°, the at least one main shaft hole 121 is not connected to the at least part of the locking groove 111. The hook body 11 in the height direction Pressure is applied to the locking member 14 on 23 to restrict its movement. Therefore, the locking member 14 remains in the at least one spindle hole 121 and the at least one receiving groove 131, and the hook body 11 remains in the unlocked state until the hook body 11 rotates to 180°. The at least one spindle hole 121 communicates with the at least part of the locking groove 111. The elastic member 16 pushes the slider 13 to the initial position through elastic restoring force. The at least one locking member 14 is pressed into the corresponding spindle hole 121 and locking groove 111, and the hook body 11 enters the locked state.

[0068] The circumferential angle between the first dividing line and the second dividing line is 140°, which means that the angle of rotation of the hook 11 during this process is less than or equal to 140°. Furthermore, the circumferential angle between the second dividing line and the position where the slope of the second inclined plane is zero must be less than or equal to 40° to ensure that after the hook 11 rotates to 180°, the elastic element 16 pushes the slider 13 to move to the initial position through the elastic restoring force.

[0069] It is understood that the protrusion 151 may be, but is not limited to, a cube or an arc shape, the groove 132 may be, but is not limited to, an inclined surface, and the circumferential angle of the abutting inclined surface 134 may be set according to a preset angle, which is not limited here.

[0070] Please see Figure 12 and Figure 13 , Figure 12 This is a three-dimensional structural diagram of the drive plate 17 and the hook cover plate 18 in one embodiment of this application. Figure 13 This is a schematic diagram of the protruding post 171 in the cover plate groove 181 in one embodiment of this application. In some embodiments, the trailer hook 1 further includes a drive plate 17 and a hook body cover plate 18. The hook body cover plate 18 is installed on the second end 124 of the main shaft 12, and the hook body 11 is connected to the outside of the hook body cover plate 18. The drive plate 17 is installed between the hook body cover plate 18 and the second end 124 and is connected to the hook body cover plate 18. The second end 124 is provided with an opening 125. One end of the drive shaft 15 near the second end 124 passes through the opening 125 and passes through the drive plate 17. The drive shaft 15 drives the drive plate 17 to rotate, so that the drive plate 17 drives the hook body cover plate 18 and the hook body 11 to rotate a preset angle on the main shaft 12.

[0071] Thus, the drive plate 17 is driven to rotate by the drive component, and the hook cover plate 18 is driven to rotate by the drive plate 17 to a preset angle when the hook 11 is in the unlocked state, thereby driving the hook 11 to rotate by a preset angle. This design makes it easier to adjust the working state of the trailer hook 1 as needed, improving the functionality and practicality of the trailer hook 1.

[0072] In some embodiments, such as Figure 12 and Figure 13 As shown, the drive plate 17 is provided with at least one protrusion 171, and the hook cover plate 18 is provided with at least one cover plate groove 181. The at least one protrusion 171 respectively enters the at least one cover plate groove 181. When the drive plate 17 rotates and drives the at least one protrusion 171 to slide in the at least one cover plate groove 181, the drive plate 17 cannot drive the hook cover plate 18 and the hook 11 to rotate on the axis of the main shaft 12. When the drive plate 17 rotates and drives the at least one protrusion 171 to move from one end of the at least one cover plate groove 181 to the other end of the at least one cover plate groove 181, the at least one protrusion 171 abuts against the side wall of the at least one cover plate groove 181. The continued rotation of the drive plate 17 drives the hook cover plate 18 and the hook 11 to rotate on the main shaft 12 by a preset angle.

[0073] Thus, by rotating the drive plate 17 and causing the at least one protruding post 171 to slide in the at least one cover plate groove 181 respectively, the hook body 11 cannot be driven to rotate when it is not unlocked, and the hook body 11 can be driven to rotate after it is unlocked. This design makes it easier to adjust the working state of the trailer hook 1 as needed, thereby improving the functionality and practicality of the trailer hook 1.

[0074] As mentioned above, the at least one protrusion 171 is considered as a main body. The at least one of the at least one protrusion 171 represents that the total number of all the protrusions 171 is at least one, and does not mean that at least one of the protrusions 171 is one of all the protrusions 171. The at least one cover plate groove 181 has the same meaning as above.

[0075] It is understood that the shape of the at least one cover groove 181 may be, but is not limited to, arc shape, and can be designed according to actual needs, without limitation here.

[0076] Please refer to the following: Figure 5 , Figure 5 As shown in one embodiment of this application Figure 4 A three-dimensional structural diagram of the hook 11 at point B. In some embodiments, such as... Figure 5 and Figure 12 As shown, the hook body 11 is provided with a first connecting hole 113, and the side of the hook body cover plate 18 is provided with a second connecting hole 182 corresponding to the first connecting hole 113. The fastener 20 passes through the first connecting hole 113 and the second connecting hole 182 to fasten the hook body 11 and the hook cover plate 18.

[0077] In other embodiments, the hook body 11 and the hook body cover plate 18 are integrally formed, and the drive shaft 15 and the drive plate 17 are integrally formed.

[0078] In some embodiments, such as Figure 3 As shown, the trailer hitch 1 also includes a mounting base 19, which is installed between the vehicle body 100 and the main shaft 12 to connect the vehicle body 100 and the trailer hitch 1.

[0079] Thus, the mounting base 19 fixes the trailer hook 1 to the crossbeam of the vehicle chassis 100, facilitating the use of the trailer hook 1.

[0080] In some embodiments, the mounting base 19 includes a first mounting portion 191 and a second mounting portion 192, wherein the first mounting portion 191 is mounted on the crossbeam of the vehicle 100, and the second mounting portion 192 is used to mount the main shaft 12.

[0081] Therefore, the arrangement of the first mounting part 191 and the second mounting part 192 better connects the vehicle body 100 and the trailer hitch 1, facilitating the use of the trailer hitch 1.

[0082] In some embodiments, the first mounting portion 191 is welded to the crossbeam.

[0083] In some embodiments, the first mounting portion 191 is configured in an arc shape to fit the crossbeam.

[0084] In some embodiments, such as Figure 3 As shown, the trailer hook 1 also includes a fastener 20, the second mounting part 192 is provided with a mounting hole 21, the first end 123 of the main shaft 12 is inserted into the mounting hole 21, and the first end 123 and the second mounting part 192 are fixedly connected by the fastener 20.

[0085] Thus, the first end 123 and the second mounting part 192 are fixedly connected by the fastener 20, thereby fixing the main shaft 12 and the mounting base 19, improving the stability of the trailer hook 1 connection.

[0086] In some embodiments, the first end 123 of the spindle 12 and the side of the mounting hole 21 are respectively provided with insertion holes 22, and the fastener 20 is inserted into the insertion hole 22 to fix the first end 123 and the second mounting part 192. The fastener 20 is a screw, and the insertion hole 22 is a screw hole.

[0087] In some embodiments, the trailer hook 1 further includes a controller for controlling the movement of the drive member to control the slider 13 to move along the first direction 152 or the second direction 153.

[0088] Therefore, the controller controls the movement of the drive component, and then controls the movement of the slider 13 when needed, so that the trailer hook 1 enters the unlocked or locked state, so that the hook body 11 can rotate in the unlocked state to meet the needs of the user and different working conditions, and improve the stability of the trailer hook 1 in the locked state to avoid the hook body 11 shaking and causing accidents.

[0089] The specific operation process is as follows:

[0090] Assuming a preset angle of 180° and the initial state of the trailer hook 1 is the unfolded state, with the hook body 11 in the locked state, the driving member drives the driving shaft 15 to rotate. During the rotation of the driving shaft 15, the protrusion 151 contacts the slide groove 132 to push the slider 13 to move along the first direction 152. The slider 13 pushes the elastic member 16 to the compressed state, and the slider 13 moves from the initial position to the position where at least one receiving groove 131 communicates with at least one main shaft hole 121. At this time, the hook body 11 is in the unlocked state, and under the drive of the driving shaft 15, the at least one protrusion 171 of the driving plate 17 moves from one end of the at least one cover plate groove 181 to the other end of the at least one cover plate groove 181, and abuts against the side wall of the at least one cover plate groove 181. The driving shaft 15... As the drive plate 17 continues to rotate in the same direction, it drives the hook cover plate 18 and the hook 11 to rotate on the main shaft 12. When the hook 11 rotates 180° on the main shaft 12, the trailer hook 1 is in a retracted state. The protrusion 151 is no longer in contact with the slide groove 132, so the protrusion 151 will not exert a pushing force on the slide groove 132. The elastic member 16 needs to return to its natural state. Therefore, the elastic restoring force generated by the elastic member 16 will push the slider 13 to move to the initial position along the second direction 153. At this time, at least a portion of the locking groove 111 is connected to at least one main shaft hole 121, and at least one receiving groove 131 is offset from at least one main shaft hole 121. Part of the locking member 14 is pressed from the receiving groove 131 into the locking groove 111 by the slider 13, so that the hook 11 is in a locked state and cannot rotate on the main shaft 12.

[0091] If the trailer hook 1 needs to change from the retracted state to the extended state, the driving component can drive the driving shaft 15 to reverse, where reversing means that the rotation direction of the driving shaft 15 is opposite to the above-mentioned rotation direction.

[0092] If the hook 11 is rotated to other preset angles, the specific operation process is also based on the above operation process.

[0093] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Where there is no conflict, the embodiments and features in the embodiments of this application can be combined with each other. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A trailer hitch, applied to a vehicle, characterized in that, include: The hook body is provided with at least one locking groove; The main shaft, the hook body is fitted onto the main shaft, the main shaft is provided with at least one main shaft hole, the at least one main shaft hole is provided corresponding to at least a portion of the at least one locking groove; A slider is movably mounted in the center hole of the spindle, and the slider is provided with at least one receiving groove, which corresponds to the at least one spindle hole. At least one locking element is located within the at least one locking groove and the at least one spindle hole; A drive shaft, which is installed in the central hole and passes through the slider; A driving member is connected to the driving shaft and is used to drive the driving shaft to rotate, so that the driving shaft moves the slider along a first direction or a second direction during rotation, thereby driving the at least one locking member to move between the at least one spindle hole, the at least one receiving groove and the at least one locking groove, wherein the first direction and the second direction are two directions based on the length direction of the slider, the first direction is towards the driving member, and the second direction is the opposite direction of the first direction; The hook body has an unlocked state and a locked state. When the hook body is in the unlocked state, the at least one locking member is located in the at least one spindle hole and the at least one receiving groove. When the hook body is in the locked state, the at least one locking member is located in the at least one locking groove and the at least one spindle hole; The drive shaft has a protrusion at one end near the drive member along its circumferential direction, and the slider has a groove at one end near the drive member. The bottom wall of the groove has a retaining slope at one end along its circumferential direction. The retaining slope includes a first slope and a second slope. The first slope connects to the second slope. The slope of the first slope gradually increases from zero to an optimal slope at a first dividing line, and maintains the optimal slope from the first dividing line to the connection between the second slope and the first slope. The slope of the second slope maintains the optimal slope from the connection to the second dividing line, and gradually decreases to zero from the second dividing line.

2. The trailer hitch according to claim 1, characterized in that, The main shaft includes a first end and a second end. The trailer hook also includes an elastic element located inside the main shaft and between the slider and the second end of the main shaft. When the elastic element is compressed by the slider and is in a compressed state, the at least one receiving groove is in communication with the at least one main shaft hole. The elastic element is also used to push the slider along the second direction by elastic restoring force during the process of returning from the compressed state to the natural state, so that the at least one receiving groove is misaligned with the at least one main shaft hole, so as to press the at least one locking member from the at least one main shaft hole and the at least one receiving groove into the at least one locking groove and the at least one main shaft hole.

3. The trailer hitch according to claim 2, characterized in that, During the rotation of the drive shaft, the protrusion contacts the abutting inclined surface to push the slider to move in the first direction. When the drive shaft continues to rotate, causing the protrusion to approach the bottom wall of the groove other than the abutting inclined surface, the slider remains stationary or the elastic restoring force of the elastic element pushes the slider to move in the second direction.

4. The trailer hitch according to claim 2, characterized in that, The trailer hook also includes a drive plate and a hook body cover plate. The hook body cover plate is installed at the second end of the main shaft, and the hook body is connected to the outside of the hook body cover plate. The drive plate is installed between the hook body cover plate and the second end and is connected to the hook body cover plate. The second end is provided with an opening. The end of the drive shaft near the second end passes through the opening and through the drive plate. The drive shaft drives the drive plate to rotate, so that the drive plate drives the hook body cover plate and the hook body to rotate at a preset angle on the main shaft.

5. The trailer hitch according to claim 4, characterized in that, The drive plate is provided with at least one protrusion, and the hook cover plate is provided with at least one cover plate groove. The at least one protrusion enters the at least one cover plate groove respectively. When the drive plate rotates and drives the at least one protrusion to slide in the at least one cover plate groove respectively, the drive plate cannot drive the hook cover plate and the hook to rotate on the axis of the main shaft. When the drive plate rotates and drives the at least one protrusion to move from one end of the at least one cover plate groove to the other end of the at least one cover plate groove respectively, the at least one protrusion abuts against the side wall of the at least one cover plate groove respectively. The continued rotation of the drive plate drives the hook cover plate and the hook to rotate on the main shaft by a preset angle.

6. The trailer hitch according to claim 2, characterized in that, The trailer hitch also includes a mounting base, which is installed between the vehicle body and the main shaft to connect the vehicle body and the trailer hitch.

7. The trailer hitch according to claim 6, characterized in that, The mounting base includes a first mounting part and a second mounting part. The first mounting part is mounted on the crossbeam of the vehicle, and the second mounting part is used to mount the main shaft.

8. The trailer hitch according to claim 7, characterized in that, The trailer hook also includes a fastener, the second mounting part is provided with a mounting hole, the first end of the main shaft is inserted into the mounting hole, and the first end and the second mounting part are fixedly connected by the fastener.

9. The trailer hitch according to claim 1, characterized in that, The trailer hook also includes a controller for controlling the movement of the drive component to control the slider to move along the first direction or the second direction.

10. A car, characterized in that, include: The trailer hitch as described in any one of claims 1-9.

11. The automobile according to claim 10, characterized in that, The vehicle also includes an input module for outputting operation signals, and the controller of the trailer hitch receives the operation signals to control the movement of the trailer hitch's drive components.

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