Trailer traction device and vehicle

Abstract

The invention discloses a trailer traction device and a vehicle, and relates to the technical field of vehicles, and the trailer traction device comprises a first support provided with a first through hole and a locking hole; the tow hook is rotatably assembled in the first through hole, and a mounting groove is formed in the outer peripheral wall of the partial structure in the first through hole; the driving mechanism drives the locking blocks to be inserted into the corresponding locking holes or move out of the corresponding locking holes and drives the locking blocks to drive the tow hook to rotate so that the tow hook can rotate to the containing position and the working position. The driving mechanism is arranged to drive the locking block to be inserted into the corresponding locking hole or drive the locking block to move towards the interior of the mounting groove so as to enable the locking block to move out of the corresponding locking hole, the locking and unlocking effects of the locking block can be achieved, and therefore the locking block drives the trailer hook to rotate to the storage position and the working position, full-automatic design of the trailer traction device is facilitated, and the working efficiency is improved. The use convenience of the trailer traction device is improved, the risks of hand clamping, collision and other injuries caused by manual operation can be reduced, and then the use safety of the trailer traction device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a trailer traction device and a vehicle having the trailer traction device. Background Art

[0002] In the related art, the trailer towing device of the vehicle needs to be locked manually, which is inconvenient to use. In addition, the manual locking operation in a limited space is prone to injuries such as pinching hands and bumps, and the trailer towing device has poor safety. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a trailer towing device, which is conducive to the full automation design of the trailer towing device and improves the convenience and safety of the use of the trailer towing device.

[0004] The present invention further provides a vehicle.

[0005] According to an embodiment of the present invention, the trailer towing device comprises: a first bracket, the first bracket is formed with a first through hole and a plurality of locking holes, the plurality of locking holes are located radially outside the first through hole and arranged along the circumferential direction of the first through hole, the locking holes and the first through hole are adjacently arranged and communicated; a trailer hook, the trailer hook is rotatably mounted in the first through hole, and the outer peripheral wall of the part of the trailer hook located in the first through hole is formed with a mounting groove, and the mounting groove is open to the end of the inner wall of the first through hole; a locking block, a part of the locking block is mounted in the mounting groove and is opposite to the bottom wall of the mounting groove, and the locking block is also suitable for being mounted in the locking hole corresponding to the mounting groove; a driving mechanism, the driving mechanism is connected to the locking block, the driving mechanism is used to drive the locking block to move toward the mounting groove so that the locking block moves out of the corresponding locking hole, and the driving mechanism is also used to drive the locking block to drive the trailer hook to rotate along the circumferential direction of the first through hole so that the trailer hook rotates to the storage position and the working position, and the driving mechanism is also used to drive the locking block to insert into the corresponding locking hole.

[0006] According to the trailer towing device of the embodiment of the present invention, by providing a driving mechanism to drive the locking block to insert into the corresponding locking hole or drive the locking block to move toward the installation groove to make the locking block move out of the corresponding locking hole, the locking and unlocking effects of the locking block can be achieved, so that the locking block drives the trailer hook to rotate to the storage position and the working position, which is conducive to the full automation design of the trailer towing device, improves the convenience of use of the trailer towing device, and can also reduce the risk of injuries such as pinching hands and bumps during manual operation, thereby improving the safety of use of the trailer towing device.

[0007] In some embodiments of the present invention, the end of the locking hole facing the first through hole is open so that the first through hole and the locking hole are in communication.

[0008] In some embodiments of the present invention, the trailer hook is formed with a first boss, the first boss is assembled in the first through hole, and a mounting groove is formed on an outer peripheral wall of the first boss.

[0009] In some embodiments of the present invention, the driving mechanism includes: an elastic member, which is assembled in the installation groove and located between the locking block and the bottom wall of the installation groove, and the elastic member is used to drive the locking block to insert into the corresponding locking hole.

[0010] In some embodiments of the present invention, the driving mechanism includes: a rotating frame, the rotating frame is located on one side of the first bracket, the rotating frame is connected to the locking block, and the rotating frame is rotated along the circumference of the first through hole to move the locking block out of the corresponding locking hole and rotate the trailer hook along the circumference of the first through hole.

[0011] In some embodiments of the present invention, the rotating frame includes: a first rotating frame and a second rotating frame, the second rotating frame is located between the first rotating frame and the first bracket, the second rotating frame extends radially along the first through hole, the outer end of the second rotating frame is rotatably connected to the first rotating frame, the first rotating frame is also formed with first and second limiting protrusions that are opposite and spaced apart, the second rotating frame is located between the first and second limiting protrusions, the second rotating frame is also formed with a strip-shaped limiting hole, and part of the locking block is installed in the strip-shaped limiting hole.

[0012] In some embodiments of the present invention, the first rotating frame is formed with a second through hole, and the outer end of the second rotating frame is formed with a pivot shaft, and the pivot shaft is installed in the second through hole.

[0013] In some embodiments of the present invention, the locking block has a mounting shaft, and the mounting shaft is mounted in the strip-shaped limiting hole.

[0014] In some embodiments of the present invention, the first rotating frame has a first rotating frame body and a second rotating frame body, the second rotating frame body is located on one side of the first rotating frame body and is fixedly connected to the second rotating frame body, the first rotating frame body is connected to the driving part of the driving mechanism, and the second rotating frame body is formed with a second through hole, a first limiting protrusion and a second limiting protrusion.

[0015] In some embodiments of the present invention, the second rotating frame body includes: a first wall portion and two second wall portions, the first wall portion and the first rotating frame body are arranged radially along the first through hole, the two second wall portions are connected between the first wall portion and the first rotating frame body, the two second wall portions are opposite and spaced apart, the first wall portion is formed with a second through hole, and the two second wall portions are respectively formed with a first limiting protrusion and a second limiting protrusion.

[0016] In some embodiments of the present invention, the trailer towing device further includes: a mounting frame, the mounting frame is fixed to the first bracket, and the driving part of the driving mechanism is installed on the mounting frame.

[0017] In some embodiments of the present invention, the locking hole has a first bevel and a second bevel that are opposite and spaced apart along the circumference of the first through hole, and the locking block has a third bevel and a fourth bevel that are opposite and spaced apart along the circumference of the first through hole, the third bevel is suitable for cooperating with the first bevel, and the fourth bevel is suitable for cooperating with the second bevel.

[0018] In some embodiments of the present invention, the trailer towing device further comprises: a second bracket, the second bracket is located on a side of the trailer hook away from the first bracket, the second bracket is formed with a third through hole, the trailer hook is formed with a second boss, and the second boss is rotatably assembled in the third through hole. A vehicle according to an embodiment of the present invention comprises the trailer towing device of the above embodiment.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 is a schematic structural diagram of a trailer traction device according to an embodiment of the present invention;

[0022] Figure 2 is an exploded view of a trailer towing device according to an embodiment of the present invention;

[0023] Figure 3 is a partial structural schematic diagram of a trailer traction device according to an embodiment of the present invention;

[0024] Figure 4 yes Figure 3 Enlarged view of point A.

[0025] Reference numerals:

[0026] Trailer towing device 100;

[0027] First bracket 1; first through hole 11; locking hole 12;

[0028] The first inclined surface 121; the second inclined surface 122;

[0029] Trailer hook 2; first boss 21; mounting groove 22; second boss 23;

[0030] Locking block 3; mounting shaft 31; third inclined surface 32; fourth inclined surface 33;

[0031] Elastic member 4;

[0032] Driving mechanism 5; rotating frame 51; first rotating frame 511;

[0033] The second through hole 5111; the first limiting protrusion 5112; the second limiting protrusion 5113; the first rotating frame body 5114;

[0034] The second rotating frame body 5115; the first wall portion 5116; the second wall portion 5117;

[0035] The second rotating frame 512; the pivot shaft 5121; the strip-shaped limiting hole 5122;

[0036] Driving portion 52; driving end 521;

[0037] Mounting frame 6; fourth through hole 61;

[0038] Second bracket 7; third through hole 71;

[0039] Sealing shell 8;

[0040] Body connecting plate 9;

[0041] Rear cross member 10. DETAILED DESCRIPTION

[0042] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0043] Reference below Figure 1-Figure 4 The trailer towing device 100 according to an embodiment of the present invention is described. The trailer towing device 100 can be applied to a vehicle, but the present invention is not limited thereto. The trailer towing device 100 can also be applied to other devices, such as ships, airplanes, etc.

[0044] like Figure 1-Figure 4As shown, the trailer towing device 100 according to the embodiment of the present invention comprises: a first bracket 1, the first bracket 1 is formed with a first through hole 11 and a plurality of locking holes 12, the plurality of locking holes 12 are located radially outside the first through hole 11 and are arranged along the circumference of the first through hole 11, the locking holes 12 and the first through hole 11 are adjacently arranged and connected; a trailer hook 2, the trailer hook 2 is rotatably assembled in the first through hole 11, and the outer peripheral wall of the trailer hook 2 located in the first through hole 11 is formed with a mounting groove 22, and the mounting groove 22 is open to the end of the inner wall of the first through hole 11; and a locking hole 12 is disposed adjacent to and communicated with the first through hole 11. Block 3, part of the locking block 3 is assembled in the mounting groove 22 and is opposite to the bottom wall of the mounting groove 22, and the locking block 3 is also suitable for being assembled in the locking hole 12 corresponding to the mounting groove 22; driving mechanism 5, the driving mechanism 5 is connected to the locking block 3, the driving mechanism 5 is used to drive the locking block 3 to move toward the mounting groove 22 so that the locking block 3 moves out of the corresponding locking hole 12, and the driving mechanism 5 is also used to drive the locking block 3 to drive the trailer hook 2 to rotate along the circumferential direction of the first through hole 11 so that the trailer hook 2 rotates to the storage position and the working position, and the driving mechanism 5 is also used to drive the locking block 3 to insert into the corresponding locking hole 12.

[0045] The first bracket 1 is formed with a plurality of locking holes 12, for example, the locking holes 12 may be but not limited to three or four. The plurality of locking holes 12 are arranged in sequence along the circumference of the first through hole 11. The plurality of locking holes 12 are all located outside the first through hole 11 in the radial direction of the first through hole 11, and the plurality of locking holes 12 are all arranged adjacent to and connected to the first through hole 11, so that the locking block 3 can be moved into or out of the locking hole 12, thereby achieving the effect of locking or unlocking the trailer hook 2.

[0046] The trailer hook 2 is rotatably mounted in the first through hole 11. When the trailer hook 2 rotates in the first through hole 11, the trailer hook 2 can rotate to the storage position and the working position. The outer peripheral wall of the part of the trailer hook 2 located in the first through hole 11 is formed with a mounting groove 22, and the end of the mounting groove 22 facing the inner wall of the first through hole 11 is open, so that the locking block 3 can move into the mounting groove 22 or into the locking hole 12 through the open end of the mounting groove 22.

[0047] It should be noted that when the locking block 3 is moved into the locking hole 12, the trailer hook 2 is locked. When the trailer hook 2 needs to be unlocked, the locking block 3 can be moved out of the locking hole 12, and at the same time, the locking block 3 is moved out of the locking hole 12 and into the installation groove 22, so that the installation groove 22 can avoid the locking block 3. After the locking block 3 is completely moved out of the locking hole 12, the trailer hook 2 can be unlocked.

[0048] The driving mechanism 5 may include a driving motor. As some embodiments of the present application, the driving motor may be directly connected to the locking block 3 to drive the locking block 3 to move out of the corresponding locking hole 12. As some embodiments of the present application, the driving motor may be indirectly connected to the locking block 3 through a transmission member, so that the driving motor drives the transmission member to move, and the transmission member drives the locking block 3 to move out of the corresponding locking hole 12, thereby achieving the effect that the driving mechanism 5 can drive the locking block 3 to move toward the installation slot 22 to move the locking block 3 out of the corresponding locking hole 12.

[0049] The driving mechanism 5 can also drive the locking block 3 to rotate along the circumferential direction of the first through hole 11. Since the locking block 3 is moved into the installation groove 22 at this time, the trailer hook 2 is in an unlocked state. The rotation of the locking block 3 can drive the trailer hook 2 to rotate along the circumferential direction of the first through hole 11, so that the trailer hook 2 is rotated to the storage position and the working position, thereby achieving the effect that the trailer hook 2 can automatically rotate to the working position, thereby realizing the towing function of the trailer traction device 100.

[0050] Specifically, when the vehicle is driving normally, the trailer hook 2 is locked in the storage position to reduce the risk of vibration or even damage to the trailer hook 2 caused by vehicle bumps. When the trailer traction device 100 needs to play a towing role, the driving mechanism 5 drives the locking block 3 to move toward the installation groove 22 so that the locking block 3 moves out of the corresponding locking hole 12, thereby unlocking the trailer hook 2. The driving mechanism 5 continues to drive the locking block 3 to rotate along the circumference of the first through hole 11, and the locking block 3 drives the trailer hook 2 to rotate to the working position. When the trailer hook 2 rotates to the working position, the installation groove 22 corresponds to the corresponding locking hole 12, and the driving mechanism 5 drives the locking block 3 to move into the corresponding locking hole 12 to achieve the effect of locking the trailer hook 2 in the working position, so as to improve the stability and safety of the trailer hook 2 during the towing process. At this time, the trailer hook 2 can meet the needs of medium and large towing, and the front and rear towing capacity of the whole vehicle can be greater than or equal to 2500kg, and the upper and lower load-bearing capacity can be greater than or equal to 125kg.

[0051] When the trailer work is completed, the driving mechanism 5 drives the locking block 3 in the reverse direction, and the locking block 3 moves toward the mounting groove 22 so that the locking block 3 moves out of the corresponding locking hole 12, thereby unlocking the trailer hook 2. The driving mechanism 5 continues to drive the locking block 3 to rotate in the reverse direction along the circumference of the first through hole 11, and the locking block 3 drives the trailer hook 2 to rotate to the storage position. When the trailer hook 2 rotates to the storage position, the mounting groove 22 corresponds to the corresponding locking hole 12, and the driving mechanism 5 drives the locking block 3 to move into the corresponding locking hole 12, so as to achieve the effect of locking the trailer hook 2 in the storage position, so as to improve the stability and safety of the trailer hook 2 when the vehicle is driving.

[0052] Therefore, by setting up the driving mechanism 5 to drive the locking block 3 to insert into the corresponding locking hole 12, and the dynamic locking block 3 moves toward the installation groove 22 to make the locking block 3 move out of the corresponding locking hole 12, the locking and unlocking effects of the locking block 3 can be achieved, so that the locking block 3 drives the trailer hook 2 to rotate to the storage position and the working position, which is conducive to the fully automated design of the trailer traction device 100, improves the convenience of use of the trailer traction device 100, and can also reduce the risk of injuries such as pinching hands and bumps during manual operation, thereby improving the safety of use of the trailer traction device 100.

[0053] In some embodiments of the present invention, Figure 4 The locking hole 12 is open at the end facing the first through hole 11 so that the first through hole 11 and the locking hole 12 are in communication.

[0054] Among them, the locking hole 12 is openly arranged at the end facing the first through hole 11, so that the first through hole 11 and the locking hole 12 are connected. Such an arrangement is conducive to the locking block 3 being able to move into or out of the locking hole 12 through the open end of the locking hole 12, thereby achieving the effect of locking or unlocking the trailer hook 2.

[0055] In some embodiments of the present invention, Figure 2 and Figure 4 As shown, the trailer hook 2 is formed with a first boss 21 , the first boss 21 is assembled in the first through hole 11 , and a mounting groove 22 is formed on the outer peripheral wall of the first boss 21 .

[0056] The first boss 21 is arranged toward the first bracket 1, and the size structure of the first boss 21 and the first through hole 11 is adapted so that the first boss 21 can be rotatably assembled in the first through hole 11. When the first boss 21 rotates in the first through hole 11, the trailer hook 2 can rotate with the first boss 21, so that the trailer hook 2 rotates to the storage position and the working position. The first boss 21 is formed with a mounting groove 22, and the mounting groove 22 is formed on the outer peripheral wall of the first boss 21, and the end of the mounting groove 22 facing the inner wall of the first through hole 11 is open, so that the locking block 3 can move into the mounting groove 22 or into the locking hole 12 through the open end of the mounting groove 22.

[0057] It should be noted that when the locking block 3 is moved into the locking hole 12, the trailer hook 2 is locked. When the trailer hook 2 needs to be unlocked, the locking block 3 can be moved out of the locking hole 12 from the open end of the locking hole 12, and the locking block 3 is moved out of the locking hole 12 and at the same time moved into the installation groove 22 through the open end of the installation groove 22, so that the installation groove 22 can avoid the locking block 3, and after the locking block 3 is completely moved out of the locking hole 12, the trailer hook 2 can be unlocked.

[0058] In some embodiments of the present invention, Figure 2 and Figure 4As shown, the driving mechanism 5 includes an elastic member 4 , which is assembled in the mounting groove 22 and located between the locking block 3 and the bottom wall of the mounting groove 22 , and is used to drive the locking block 3 to be inserted into the corresponding locking hole 12 .

[0059] Among them, as some embodiments of the present application, the elastic member 4 can be constructed as a spring. As some embodiments of the present application, the elastic member 4 can be constructed as a spring. The present application takes the elastic member 4 as a spring as an example for explanation, and part of the locking block 3 and the elastic member 4 are both assembled in the mounting groove 22, and the locking block 3 is arranged relative to the bottom wall of the mounting groove 22, so that the elastic member 4 can be assembled between the locking block 3 and the bottom wall of the mounting groove 22. Further, the elastic member 4 is compressed between the locking block 3 and the bottom wall of the mounting groove 22, and the elastic member 4 can apply pressure to the locking block 3, so that the elastic member 4 can drive the locking block 3 to be inserted into the corresponding locking hole 12, thereby achieving the effect of locking the trailer hook 2.

[0060] In some embodiments of the present invention, Figure 2 and Figure 4 As shown, the driving mechanism 5 may include: a rotating frame 51, the rotating frame 51 is located on one side of the first bracket 1, the rotating frame 51 is connected to the locking block 3, and the rotating frame 51 rotates along the circumference of the first through hole 11 to move the locking block 3 out of the corresponding locking hole 12 and rotate the trailer hook 2 along the circumference of the first through hole 11.

[0061] Among them, the rotating frame 51 is the transmission member of the above embodiment, and the rotating frame 51 is located on the side of the first bracket 1 away from the trailer hook 2. The rotating frame 51 is connected to the lock block 3 by transmission, and such a configuration facilitates the rotating frame 51 to drive the lock block 3 to move into or out of the installation groove 22. The rotating frame 51 rotates along the circumference of the first through hole 11, so that the lock block 3 overcomes the elastic force of the elastic member 4 and moves out of the corresponding locking hole 12 and moves into the installation groove 22, thereby unlocking the trailer hook 2. The rotating frame 51 can continue to rotate along the circumference of the first through hole 11 to drive the lock block 3 to drive the trailer hook 2 to continue to rotate to the working position. When the trailer hook 2 rotates to the working position, the elastic member 4 applies pressure to the lock block 3 to drive the lock block 3 to move into the corresponding locking hole 12, thereby achieving the effect of locking the trailer hook 2 in the working position, so that the trailer hook 2 can stably complete the trailer work.

[0062] When the trailer work is completed, the rotating frame 51 rotates in the opposite direction along the circumference of the first through hole 11, and the locking block 3 overcomes the elastic force of the elastic member 4 and moves toward the installation slot 22 so that the locking block 3 moves out of the corresponding locking hole 12 and moves into the installation slot 22, thereby unlocking the trailer hook 2. The rotating frame 51 can continue to rotate in the opposite direction along the circumference of the first through hole 11 to drive the locking block 3 to drive the trailer hook 2 to continue to rotate to the storage position. When the trailer hook 2 rotates to the storage position, the elastic member 4 applies pressure to the locking block 3 to drive the locking block 3 to move into the corresponding locking hole 12, thereby achieving the effect of locking the trailer hook 2 in the storage position, thereby achieving the effect of rotating the trailer hook 2 to the storage position and locking it or rotating it to the working position and locking it.

[0063] It should be noted that when the trailer hook 2 is rotated to the storage position, the trailer hook 2 is stored between the rear bumper and the cross beam, which is beneficial for the trailer hook 2 rotated to the storage position without affecting the overall vehicle shape layout, thereby being suitable for the smaller space layout requirements of hybrid vehicles and pure electric vehicles.

[0064] In some embodiments of the present invention, Figure 2 and Figure 4 As shown, the rotating frame 51 may include: a first rotating frame 511 and a second rotating frame 512, the second rotating frame 512 is located between the first rotating frame 511 and the first bracket 1, the second rotating frame 512 extends radially along the first through hole 11, the outer end of the second rotating frame 512 is rotatably connected to the first rotating frame 511, the first rotating frame 511 is also formed with a first limiting protrusion 5112 and a second limiting protrusion 5113 that are opposite and spaced apart, the second rotating frame 512 is located between the first limiting protrusion 5112 and the second limiting protrusion 5113, the second rotating frame 512 is also formed with a strip limiting hole 5122, and part of the locking block 3 is installed in the strip limiting hole 5122.

[0065] Among them, along the axial direction of the first through hole 11, the second rotating frame 512 is located between the first rotating frame 511 and the first bracket 1, that is, the first rotating frame 511, the second rotating frame 512 and the first bracket 1 are arranged in sequence. The second rotating frame 512 extends along the radial direction of the first through hole 11, and the outer end of the second rotating frame 512 is rotatably connected to the first rotating frame 511. For example, the outer end of the second rotating frame 512 and the first rotating frame 511 can be connected to the first rotating frame 511 through, but not limited to, a pivot shaft 5121, a bearing, etc., so that when the first rotating frame 511 rotates, the second rotating frame 512 can be driven to rotate.

[0066] The first rotating frame 511 is also formed with a first limiting protrusion 5112 and a second limiting protrusion 5113, which are arranged opposite to each other and spaced apart. The second rotating frame 512 is located between the first limiting protrusion 5112 and the second limiting protrusion 5113, so that the first limiting protrusion 5112 and the second limiting protrusion 5113 can limit the second rotating frame 512, thereby reducing the risk of transmission failure of the rotating frame 51 due to the random rotation of the second rotating frame 512.

[0067] The second rotating frame 512 is also formed with a strip-shaped limiting hole 5122, the longer direction of the strip-shaped limiting hole 5122 is the length direction of the strip-shaped limiting hole 5122, and the shorter direction of the strip-shaped limiting hole 5122 is the width direction of the strip-shaped limiting hole 5122. Part of the locking block 3 is installed in the strip-shaped limiting hole 5122, so that the part of the locking block 3 can rotate in the strip-shaped limiting hole 5122 and move along the length direction of the strip-shaped limiting hole 5122.

[0068] In some embodiments of the present invention, Figure 2 and Figure 4 As shown, the first rotating frame 511 is formed with a second through hole 5111 , and the outer end of the second rotating frame 512 is formed with a pivot shaft 5121 , and the pivot shaft 5121 is installed in the second through hole 5111 .

[0069] Among them, the pivot shaft 5121 is arranged on the side of the second rotating frame 512 facing the first rotating frame 511. Furthermore, the size and shape of the pivot shaft 5121 are adapted to the size and shape of the second through hole 5111 so that the pivot shaft 5121 can be installed in the second through hole 5111. It should be noted that the outer diameter of the pivot shaft 5121 is slightly smaller than the inner diameter of the second through hole 5111 so that the pivot shaft 5121 can rotate in the second through hole 5111.

[0070] In some embodiments of the present invention, Figure 2 and Figure 4 As shown, the locking block 3 has a mounting shaft 31 , and the mounting shaft 31 is mounted in the strip-shaped limiting hole 5122 .

[0071] Among them, the outer diameter dimension of the installation shaft 31 is adapted to the width dimension of the strip limiting hole 5122, so that the installation shaft 31 can be installed in the strip limiting hole 5122. It should be noted that the outer diameter of the installation shaft 31 is slightly smaller than the width dimension of the strip limiting hole 5122, so that the installation shaft 31 can rotate in the strip limiting hole 5122 and move along the length direction of the strip limiting hole 5122.

[0072] When the trailer traction device 100 needs to play a towing role, the first rotating frame 511 rotates along the circumference of the first through hole 11. Since the pivot shaft 5121 is assembled in the second through hole 5111, the rotation of the first rotating frame 511 will drive the second rotating frame 512 to rotate. When the second rotating frame 512 rotates to abut against the first limiting protrusion 5112 on one side wall, according to the lever principle, the side wall extending along the length direction of the strip-shaped limiting hole 5122 will apply pressure to the installation shaft 31 to drive the locking block 3 to overcome the elastic force of the elastic member 4 and move out of the corresponding locking hole 12 and move into the installation groove 22, thereby unlocking the trailer hook 2. The first rotating frame 511 drives the second rotating frame 512 to continue to rotate along the circumference of the first through hole 11, so as to drive the locking block 3 to drive the trailer hook 2 to rotate to the working position.

[0073] If the trailer traction device 100 has a mechanical limit, when the controller monitors that the driving part 52 is blocked, it means that the trailer hook 2 has rotated to the working position. If the controller is used to monitor the number of revolutions of the driving part 52, the controller determines that the trailer hook 2 has rotated to the working position when it rotates a certain number of revolutions. When the trailer hook 2 rotates to the working position, the first rotating frame 511 can rotate in the opposite direction for a certain stroke, so that the side wall extending along the length direction of the strip-shaped limit hole 5122 releases the limit on the installation shaft 31, and at this time, the elastic member 4 can smoothly drive the locking block 3 to move into the corresponding locking hole 12, so as to achieve the effect of locking the trailer hook 2 in the working position, so that the trailer hook 2 can stably complete the trailer work.

[0074] When the trailer traction device 100 needs to be moved to the storage position and locked, the first rotating frame 511 can be rotated in the opposite direction along the circumference of the first through hole 11. The principle is the same as that of the traction device moving and locking in the working position, but in the opposite direction, and will not be repeated.

[0075] In some embodiments of the present invention, Figure 2-Figure 4 As shown, the first rotating frame 511 has a first rotating frame body 5114 and a second rotating frame body 5115, the second rotating frame body 5115 is located on one side of the first rotating frame body 5114 and is fixedly connected to the second rotating frame body 5115, the first rotating frame body 5114 is connected to the driving part 52 of the driving mechanism 5, and the second rotating frame body 5115 is formed with a second through hole 5111, a first limiting protrusion 5112 and a second limiting protrusion 5113.

[0076] Among them, as some embodiments of the present application, the first rotating frame body 5114 and the second rotating frame body 5115 are integrally formed. As some embodiments of the present application, the first rotating frame body 5114 and the second rotating frame body 5115 are welded and connected. Along the radial direction of the first through hole 11, the second rotating frame body 5115 is located on the outside of the first rotating frame body 5114, and the second through hole 5111, the first limiting protrusion 5112 and the second limiting protrusion 5113 are all formed on the second rotating frame body 5115. Such a setting can make the structure of the first rotating frame 511 reasonable, which is conducive to the connection between the first rotating frame body 5114 and the driving part 52 of the driving mechanism 5, so that the driving part 52 can drive the first rotating frame body 5114 to rotate, thereby driving the first rotating frame 511 to rotate as a whole, and can also reduce the risk of interference between the driving part 52 and the second rotating frame 512, so that the second rotating frame body 5115 and the second rotating frame 512 cooperate in transmission. As some embodiments of the present application, the driving part 52 can be constructed as a driving motor. For example, the driving part 52 can be a motor with an integrated planetary gear (worm gear) reduction mechanism, or a motor composed of a planetary gear (worm gear) reduction mechanism and a reduction mechanism motor.

[0077] In some embodiments of the present invention, Figure 2-Figure 4 As shown, the second rotating frame body 5115 may include: a first wall portion 5116 and two second wall portions 5117, the first wall portion 5116 and the first rotating frame body 5114 are arranged radially along the first through hole 11, the two second wall portions 5117 are connected between the first wall portion 5116 and the first rotating frame body 5114, the two second wall portions 5117 are opposite and spaced apart, the first wall portion 5116 is formed with a second through hole 5111, and the two second wall portions 5117 are respectively formed with a first limiting protrusion 5112 and a second limiting protrusion 5113.

[0078] The first wall portion 5116 and the first rotating frame body 5114 are arranged opposite to each other, and the first wall portion 5116 and the first rotating frame body 5114 are arranged along the radial direction of the first through hole 11. The two second wall portions 5117 are arranged opposite to each other and spaced apart, and the two second wall portions 5117 are connected between the first wall portion 5116 and the first rotating frame body 5114, so as to reduce the risk of transmission failure of the second rotating frame body 5115 due to cracking of the second wall portion 5117, and help to improve the structural stability of the second rotating frame body 5115.

[0079] The first wall portion 5116 is formed with a second through hole 5111, and the two second wall portions 5117 are respectively formed with a first limiting protrusion 5112 and a second limiting protrusion 5113. Such an arrangement can make the structure of the second rotating frame body 5115 reasonable, which is conducive to assembling the second rotating frame 512 between the first limiting protrusion 5112 and the second limiting protrusion 5113. When the trailer traction device 100 needs to play the role of a trailer, the second rotating frame 512 abuts against the first limiting protrusion 5112, so as to drive the locking block 3 to overcome the elastic force of the elastic member 4 and move out of the corresponding locking hole 12 through the principle of lever. When the trailer traction device 100 needs to be moved to the storage position and locked, the second rotating frame 512 abuts against the second limiting protrusion 5113, so as to drive the locking block 3 to overcome the elastic force of the elastic member 4 and move out of the corresponding locking hole 12 through the principle of lever, thereby achieving the effect of smoothly unlocking the trailer hook 2 in different working states.

[0080] In some embodiments of the present invention, Figure 2-Figure 4 As shown, there are multiple second rotating frame bodies 5115, multiple second rotating frames 512, multiple locking blocks 3 and multiple elastic members 4, and the multiple second rotating frame bodies 5115, multiple second rotating frames 512, multiple locking blocks 3 and multiple elastic members 4 correspond to each other one by one, and the multiple second rotating frame bodies 5115 are arranged in sequence along the circumferential direction of the first rotating frame body 5114.

[0081] In some embodiments of the present application, the second rotating frame body 5115, the second rotating frame 512, the locking block 3 and the elastic member 4 are all two. In some embodiments of the present application, the second rotating frame body 5115, the second rotating frame 512, the locking block 3 and the elastic member 4 are all three. The present application takes the example of two second rotating frame bodies 5115, second rotating frame 512, locking blocks 3 and elastic members 4. The two second rotating frame bodies 5115 are arranged in sequence along the circumferential direction of the first rotating frame body 5114, and the two second rotating frame bodies 5115, two second rotating frames 512, two locking blocks 3 and two elastic members 4 correspond to each other one by one. That is to say, one second rotating frame body 5115 corresponds to one second rotating frame 512, one locking block 3 and one elastic member 4, which together constitute a locking matching structure. Such a setting is conducive to improving the locking reliability of the trailer hook 2, reducing the risk of unstable locking of the trailer hook 2 due to only one locking matching structure locking the trailer hook 2, thereby reducing the risk of shaking of the trailer hook 2, which is conducive to improving the safety of the trailer hook 2 during towing, and can also reduce the risk of excessive cost caused by too many locking matching structures, which is conducive to the low-cost design of the trailer traction device 100.

[0082] In some embodiments of the present invention, Figure 1 As shown, the trailer towing device 100 may further include: a mounting frame 6 , the mounting frame 6 is fixed to the first bracket 1 , and the driving part 52 of the driving mechanism 5 is installed on the mounting frame 6 .

[0083] Wherein, as some embodiments of the present application, the mounting frame 6 and the first bracket 1 can be connected by bolts. As some embodiments of the present application, the mounting frame 6 and the first bracket 1 can be connected by snapping. The mounting frame 6 can provide an assembly position for the driving part 52 of the driving mechanism 5. As some embodiments of the present application, the mounting frame 6 and the driving part 52 can be connected by bolts. As some embodiments of the present application, the mounting frame 6 and the driving part 52 can be connected by snapping. Further, the mounting frame 6 can have a fourth through hole 61, so that the fourth through hole 61 can avoid the driving end 521 of the driving part 52, which is conducive to the driving end 521 passing through the fourth through hole 61 and being connected to the first rotating frame 511, thereby smoothly driving the first rotating frame 511 to rotate.

[0084] In some embodiments of the present invention, Figure 2-Figure 4 As shown, the locking hole 12 has a first bevel 121 and a second bevel 122 which are opposite and spaced apart along the circumference of the first through hole 11, and the locking block 3 has a third bevel 32 and a fourth bevel 33 which are opposite and spaced apart along the circumference of the first through hole 11, the third bevel 32 is suitable for being assembled with the first bevel 121, and the fourth bevel 33 is suitable for being assembled with the second bevel 122.

[0085] The locking hole 12 has a first inclined surface 121 and a second inclined surface 122, which are arranged opposite to each other and spaced apart along the circumference of the first through hole 11. In the radial direction of the first through hole 11, the distance between the first inclined surface 121 and the second inclined surface 122 increases as the distance close to the center of the circle decreases. The locking block 3 has a third inclined surface 32 and a fourth inclined surface 33, which are arranged opposite to each other and spaced apart along the circumference of the first through hole 11. In the radial direction of the first through hole 11, the distance between the third inclined surface 32 and the fourth inclined surface 33 increases as the distance close to the center of the circle decreases. Such an arrangement can make the structures of the first inclined surface 121 and the third inclined surface 32, and the second inclined surface 122 and the fourth inclined surface 33 compatible, which is conducive to the matching assembly of the third inclined surface 32 with the first inclined surface 121, and the matching assembly of the fourth inclined surface 33 with the second inclined surface 122.

[0086] When the trailer hook 2 needs to be locked, the elastic member 4 drives the locking block 3 to move toward the locking hole 12. By setting the third inclined surface 32 to cooperate with the first inclined surface 121 and the fourth inclined surface 33 to cooperate with the second inclined surface 122, the risk of interference between the locking block 3 and the first bracket 1 can be reduced, so that the locking block 3 can be smoothly moved into the locking hole 12, which is beneficial to improve the locking reliability of the trailer hook 2.

[0087] In some embodiments of the present invention, Figure 1-Figure 2As shown, the trailer towing device 100 may further include: a second bracket 7, the second bracket 7 is located on the side of the trailer hook 2 away from the first bracket 1, the second bracket 7 is formed with a third through hole 71, the trailer hook 2 is formed with a second boss 23, and the second boss 23 is rotatably assembled in the third through hole 71.

[0088] The vehicle may include a rear cross beam 10, which may be a steel pipe, square steel, profile, etc., which is conducive to improving the load-bearing capacity, durability and service life of the rear cross beam 10. Vehicle body connecting plates 9 are provided at both ends of the rear cross beam 10, and the rear cross beam 10 and the vehicle body connecting plates 9 at both ends may be connected by, but not limited to, welding. The first bracket 1 and the second bracket 7 may be fixed to the rear cross beam 10 by, but not limited to, welding, and the second bracket 7 is located on the side of the trailer hook 2 away from the first bracket 1, that is, along the axial direction of the first through hole 11, the first bracket 1, the trailer hook 2 and the second bracket 7 are arranged in sequence.

[0089] The second bracket 7 is formed with a third through hole 71, and the trailer hook 2 is formed with a second boss 23. The second boss 23 is arranged on the side of the trailer hook 2 away from the first boss 21. The peripheral wall size of the second boss 23 can be slightly smaller than the inner wall size of the third through hole 71, so that the second boss 23 can be rotatably assembled in the third through hole 71. Such an arrangement can make the trailer hook 2 clamped between the first bracket 1 and the second bracket 7, reducing the risk of the trailer hook 2 falling off, thereby further improving the structural reliability of the trailer towing device 100.

[0090] As some embodiments of the present application, Figure 2 As shown, the trailer traction device 100 may further include a sealing shell 8, which may form an assembly space, in which the driving part 52 is disposed, and the sealing shell 8 is fixedly connected to the first bracket 1, so that the sealing shell 8 can seal the driving part 52, which is beneficial to improving the aesthetics of the trailer traction device 100. The vehicle body connecting plate 9 may be fixed to the vehicle body or the vehicle frame by bolts, so that the trailer traction device 100 is fixed to the vehicle through the rear cross beam 10 and the vehicle body connecting plate 9.

[0091] As some embodiments of the present application, the locking block 3 can be, but is not limited to, any structure that can form mechanical self-locking, such as a cubic block, a cone block, a cylindrical pin, a conical pin, etc. The first rotating frame 511 and the second rotating frame 512 can be other connecting rods or connecting rod-like structures that can achieve the same function.

[0092] The vehicle according to the embodiment of the present invention includes the trailer traction device 100 of the above embodiment. The motion curve of the trailer traction device 100 of the present application conforms to the aesthetic design, and the motion process can be ensured to have no interference with other surrounding parts by adjusting the rotation axis angle. By setting the elastic member 4 to drive the lock block 3 to insert into the corresponding locking hole 12, the driving mechanism 5 drives the lock block 3 to move toward the installation groove 22 so that the lock block 3 moves out of the corresponding locking hole 12, the locking and unlocking effects of the lock block 3 can be achieved, so that the lock block 3 drives the trailer hook 2 to rotate to the storage position and the working position, which is conducive to the full automation design of the trailer traction device 100, improves the convenience of use of the trailer traction device 100, and can also reduce the risk of injuries such as pinching hands and bumps during manual operation, thereby improving the safety of use of the trailer traction device 100.

[0093] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0094] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A trailer towing device (100), characterized in that: include: A first bracket (1), the first bracket (1) being formed with a first through hole (11) and a plurality of locking holes (12), the plurality of locking holes (12) being located radially outside the first through hole (11) and arranged along the circumference of the first through hole (11), the locking holes (12) and the first through hole (11) being adjacently arranged and connected; A trailer hook (2), the trailer hook (2) being rotatably mounted on the first through hole (11), and a mounting groove (22) being formed on the outer peripheral wall of the part of the trailer hook (2) located inside the first through hole (11), the mounting groove (22) being open at an end facing the inner wall of the first through hole (11); A locking block (3), a portion of which is assembled in the mounting groove (22) and is opposite to the bottom wall of the mounting groove (22), and the locking block (3) is also suitable for being assembled in the locking hole (12) corresponding to the mounting groove (22); A driving mechanism (5), wherein the driving mechanism (5) is connected to the locking block (3), and the driving mechanism (5) is used to drive the locking block (3) to move toward the installation groove (22) so that the locking block (3) moves out of the corresponding locking hole (12), and the driving mechanism (5) is also used to drive the locking block (3) to drive the trailer hook (2) to rotate along the circumference of the first through hole (11) so that the trailer hook (2) rotates to a storage position and a working position, and the driving mechanism (5) is also used to drive the locking block (3) to insert into the corresponding locking hole (12).

2. The trailer towing device according to claim 1, characterized in that: The locking hole (12) is open at an end facing the first through hole (11) so that the first through hole (11) and the locking hole (12) are in communication.

3. The trailer towing device according to claim 1, characterized in that: The trailer hook (2) is formed with a first boss (21), the first boss (21) is assembled in the first through hole (11), and the outer peripheral wall of the first boss (21) is formed with the mounting groove (22).

4. The trailer towing device according to claim 1, characterized in that: The driving mechanism (5) comprises: an elastic member (4), the elastic member (4) being assembled in the mounting groove (22) and being located between the locking block (3) and the bottom wall of the mounting groove (22), the elastic member (4) being used for driving the locking block (3) to be inserted into the corresponding locking hole (12).

5. The trailer towing device according to claim 1, characterized in that: The driving mechanism (5) comprises: a rotating frame (51), the rotating frame (51) being located on one side of the first bracket (1), the rotating frame (51) being connected to the locking block (3), and the locking block (3) being moved out of the corresponding locking hole (12) and the trailer hook (2) being rotated along the circumference of the first through hole (11) by the rotating frame (51).

6. The trailer towing device according to claim 5, characterized in that: The rotating frame (51) comprises: a first rotating frame (511) and a second rotating frame (512), wherein the second rotating frame (512) is located between the first rotating frame (511) and the first bracket (1), the second rotating frame (512) extends along the radial direction of the first through hole (11), the outer end of the second rotating frame (512) is rotatably connected to the first rotating frame (511), the first rotating frame (511) is also formed with a first limiting protrusion (5112) and a second limiting protrusion (5113) which are opposite and spaced apart, the second rotating frame (512) is located between the first limiting protrusion (5112) and the second limiting protrusion (5113), the second rotating frame (512) is also formed with a strip-shaped limiting hole (5122), and a part of the locking block (3) is installed in the strip-shaped limiting hole (5122).

7. The trailer towing device according to claim 6, characterized in that: The first rotating frame (511) is formed with a second through hole (5111), and the outer end of the second rotating frame (512) is formed with a pivot shaft (5121), and the pivot shaft (5121) is installed in the second through hole (5111).

8. The trailer towing device according to claim 6, characterized in that: The locking block (3) has a mounting shaft (31), and the mounting shaft (31) is mounted in the strip-shaped limiting hole (5122).

9. The trailer towing device according to claim 7, characterized in that: The first rotating frame (511) comprises a first rotating frame body (5114) and a second rotating frame body (5115), wherein the second rotating frame body (5115) is located at one side of the first rotating frame body (5114) and is fixedly connected to the second rotating frame body (5115), the first rotating frame body (5114) is connected to the driving part (52) of the driving mechanism (5), and the second rotating frame body (5115) is formed with the second through hole (5111), the first limiting protrusion (5112) and the second limiting protrusion (5113).

10. The trailer towing device according to claim 9, characterized in that: The second rotating frame body (5115) includes: a first wall portion (5116) and two second wall portions (5117), the first wall portion (5116) and the first rotating frame body (5114) are arranged radially along the first through hole (11), the two second wall portions (5117) are connected between the first wall portion (5116) and the first rotating frame body (5114), the two second wall portions (5117) are opposite to each other and spaced apart, the first wall portion (5116) is formed with the second through hole (5111), and the two second wall portions (5117) are respectively formed with the first limiting protrusion (5112) and the second limiting protrusion (5113).

11. The trailer towing device according to claim 1, characterized in that: Also includes: A mounting frame (6), wherein the mounting frame (6) is fixedly mounted on the first bracket (1), and the driving part (52) of the driving mechanism (5) is mounted on the mounting frame (6).

12. The trailer towing device according to any one of claims 1 to 11, characterized in that: The locking hole (12) has a first inclined surface (121) and a second inclined surface (122) which are opposite to and spaced apart from each other along the circumference of the first through hole (11); the locking block (3) has a third inclined surface (32) and a fourth inclined surface (33) which are opposite to and spaced apart from each other along the circumference of the first through hole (11); the third inclined surface (32) is suitable for being assembled with the first inclined surface (121); and the fourth inclined surface (33) is suitable for being assembled with the second inclined surface (122).

13. The trailer towing device according to any one of claims 1 to 11, characterized in that: Also includes: A second bracket (7), the second bracket (7) is located on a side of the trailer hook (2) away from the first bracket (1), the second bracket (7) is formed with a third through hole (71), the trailer hook (2) is formed with a second boss (23), and the second boss (23) is rotatably assembled in the third through hole (71).

14. A vehicle, characterized in that: It comprises a trailer towing device (100) according to any one of claims 1-13.

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