Tow hitch and vehicle

Abstract

The application discloses a towing seat and a vehicle, and the towing seat comprises a towing seat body, a locking piece, a first connecting rod, a second connecting rod and a handle assembly. The towing seat body is provided with a mounting cavity and a mounting groove, and a first through hole is formed in the side wall of the mounting cavity. The locking piece is arranged in the transverse direction and passes through the first through hole, has a transverse movement stroke for closing or opening the mounting groove opening to realize locking or unlocking. The first connecting rod is installed in the mounting cavity and is provided with a first end and a second end. The second end is matched with a first limiting part, and the first connecting rod can rotate around the first limiting part. The second connecting rod is installed in the mounting cavity and is provided with a third end and a fourth end. The third end is connected with the locking piece at one end in the mounting cavity, and the fourth end is matched with a second limiting part. The second connecting rod can rotate around the second limiting part. A rotating shaft is arranged in the middle part of the second connecting rod and the first connecting rod. One end of the handle assembly is connected with the first end, so that the first connecting rod rotates.

Description

Technical Field

[0001] This invention relates to the field of traction devices, and more particularly to a traction seat and vehicle. Background Technology

[0002] In daily life, towing seats are commonly found on towing vehicles. Most towing seats are equipped with a connecting rod, with a locking device at one end and a handle assembly at the other end. Pulling the handle assembly causes the locking device to shift.

[0003] In a standard setup, the locking mechanism, handle assembly, and linkage are configured as shown in reference document CN116674660A. Figure 3 The handle assembly is connected to the upper end of the connecting rod, the middle of the connecting rod is connected to the locking element, and the connecting rod rotates around the lower end. The connecting rod can be regarded as a force-saving lever, but it does not save distance. Therefore, when the locking element moves from the locked position to the unlocked position, the upper end of the connecting rod needs to move a relatively long distance. In some traction seats, the upper end of the connecting rod will interfere with the longitudinally extending reinforcing plate in the mounting cavity. Therefore, it is necessary to remove the reinforcing plate or move the reinforcing plate to the sides. This method of removing the reinforcing plate or changing the position of the reinforcing plate will affect the overall strength of the traction seat. Summary of the Invention

[0004] The main objective of this invention is to provide a towing seat and vehicle, particularly a towing seat designed to solve the problem of a long travel distance at the end of the connecting rod that is connected to the handle assembly in existing towing seats.

[0005] To achieve the above objectives, the present invention provides a traction seat, wherein the traction seat comprises:

[0006] The traction seat body has an installation cavity and an installation groove. The installation groove is used to install a traction pin. A first through hole is provided on the side wall of the installation cavity, which connects the installation cavity and the installation groove. A first limiting part and a second limiting part are fixedly provided in the installation cavity.

[0007] A locking element extends laterally and passes through the first through hole, having a lateral travel for closing or opening the mounting slot opening to achieve locking or unlocking.

[0008] A first connecting rod, installed within the mounting cavity, has a first end and a second end, the second end engaging with a first limiting portion, and the first connecting rod being rotatable at least around the first limiting portion; and

[0009] The second connecting rod, installed in the mounting cavity, has a third end and a fourth end. The third end is pivotally connected to one end of the locking member located in the mounting cavity. The fourth end cooperates with the second limiting part. The second connecting rod can rotate at least around the second limiting part. A pivot is provided through the middle of the second connecting rod and the first connecting rod. The product of the ratio of the distance from the pivot to the first end to the distance from the first end to the second end and the ratio of the distance from the third end to the fourth end to the distance from the pivot to the fourth end is greater than 1.

[0010] A handle assembly is at least partially installed in the mounting cavity. One end of the handle assembly is connected to the first end. The handle assembly has a lateral travel for pulling the first end to rotate the first link and the second link, thereby driving the locking member to move along the travel.

[0011] Optionally, the distance from the rotating shaft to the second end is greater than the distance from the rotating shaft to the fourth end.

[0012] Optionally, the first limiting part includes a first limiting hole, the first end portion passes through the first limiting hole, and the diameter of the first limiting hole is larger than the diameter of the first end portion;

[0013] The second limiting part includes a second limiting hole, and the second end portion passes through the second limiting hole. The diameter of the second limiting hole is larger than the diameter of the second end portion.

[0014] Optionally, the openings of the first limiting hole and the second limiting hole are rounded.

[0015] Optionally, the mounting cavity has a second through hole on its side wall, the handle assembly extends laterally and passes through the second through hole, and the traction seat further includes a driving part installed in the mounting cavity and drivingly connected to the handle assembly to drive the handle assembly to move laterally.

[0016] Optionally, the handle assembly includes a locking plate that extends laterally and passes through the second through hole. A first slot is provided on one side of the locking plate, and one side wall of the first slot is disposed facing the inner side wall of the mounting cavity for abutting against the inner side wall of the mounting cavity. One end of the locking plate located in the mounting cavity is connected to the first end.

[0017] Optionally, the drive unit further includes a drive cylinder, which extends laterally and is fixedly disposed in the mounting cavity, and has a drive end that moves laterally.

[0018] The locking plate is provided with a sliding groove that extends laterally;

[0019] The tie rod assembly also includes:

[0020] A pull rod extends laterally and passes through the second through hole. The pull rod and the locking plate are stacked in the thickness direction. The pull rod has a relief portion protruding from the locking plate in the longitudinal direction. The width of the relief portion gradually decreases in the longitudinal direction towards the interior of the mounting cavity. The relief portion is longitudinally corresponding to the first slot. One end of the pull rod located outside the traction seat body is spring-connected to one end of the locking plate located outside the traction seat body.

[0021] The crank rod has one end connected to the drive shaft, and the other end passes through the groove and is connected to the shaft at the end of the pull rod located in the mounting cavity.

[0022] Optionally, a second slot is provided on the side of the locking plate opposite to the side where the first slot is provided. The second slot is opened opposite to the first slot and is used to abut against the outer wall of the traction seat body.

[0023] Optionally, the traction seat includes a first spring, a first end of which is fixedly connected to one end of the locking plate located in the mounting cavity, and a second end of which is fixedly connected to the side wall of the mounting cavity, wherein the second end is located on the same side of the first slot as the second slot in the longitudinal direction.

[0024] Optionally, the present invention also proposes a vehicle including a towing seat, wherein the towing seat comprises:

[0025] The traction seat body has an installation cavity and an installation groove. The installation groove is used to install a traction pin. A first through hole is provided on the side wall of the installation cavity, which connects the installation cavity and the installation groove. A first limiting part and a second limiting part are fixedly provided in the installation cavity.

[0026] A locking element extends laterally and passes through the first through hole, having a lateral travel for closing or opening the mounting slot opening to achieve locking or unlocking.

[0027] A first connecting rod, installed within the mounting cavity, has a first end and a second end, the second end engaging with a first limiting portion, and the first connecting rod being rotatable at least around the first limiting portion; and

[0028] The second connecting rod, installed in the mounting cavity, has a third end and a fourth end. The third end is pivotally connected to one end of the locking member located in the mounting cavity. The fourth end cooperates with the second limiting part. The second connecting rod can rotate at least around the second limiting part. A pivot is provided through the middle of the second connecting rod and the first connecting rod. The product of the ratio of the distance from the pivot to the first end to the distance from the first end to the second end and the ratio of the distance from the third end to the fourth end to the distance from the pivot to the fourth end is greater than 1.

[0029] A handle assembly is at least partially installed in the mounting cavity. One end of the handle assembly is connected to the first end. The handle assembly has a lateral travel for pulling the first end to rotate the first link and the second link, thereby driving the locking member to move along the travel.

[0030] In the technical solution provided by the present invention, a second link is added, which is connected to the middle of the first link. One end of the second link can rotate around the second limiting part, and the other end of the second link is connected to the locking member. The second link acts as a lever that saves distance and amplifies the distance the locking member moves. Therefore, the locking member can be unlocked and locked by moving a small distance at the first end. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0032] Figure 1 This is a perspective view of an embodiment of the traction seat provided by the present invention;

[0033] Figure 2 for Figure 1 A partial schematic diagram of the traction seat in the diagram;

[0034] Figure 3 This is a plan view of an implementation method of a conventional technical means in the background art.

[0035] Explanation of icon numbers:

[0036] 100 Traction seat 42 Fourth end 1 Traction seat body 5 pivot 11 Mounting cavity 6 Handle components 111 First limiting section 61 Locking plate 1111 First limiting hole 611 First card slot 112 Second limiting part 612 Second slot 1121 Second limiting hole 613 chute 12 Mounting slot 62 Pull rod 2 Locking components 621 Avoidance section 3 First link 63 Crank 31 First end 7 First spring 32 Second end 8 Drive unit 4 Second link 81 Drive cylinder 41 Third end

[0037] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0039] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0040] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0041] Currently, existing traction seats have a problem with a long travel distance at the end where the connecting rod connects to the handle assembly.

[0042] To address the above problems, the present invention provides a traction seat. Figures 1 to 2 This is a specific embodiment of the traction seat 100 provided by the present invention.

[0043] Please see Figures 1 to 2 The traction seat 100 includes:

[0044] The traction seat body 1 has an installation cavity 11 and an installation groove 12. The installation groove 12 is used to install a traction pin. A first through hole is provided on the side wall of the installation cavity 11. The first through hole connects the installation cavity 11 and the installation groove 12. A first limiting part 111 and a second limiting part 112 are fixedly provided in the installation cavity 11.

[0045] The locking member 2 extends laterally and passes through the first through hole, and has a lateral travel for closing or opening the opening of the mounting groove 12 to achieve locking or unlocking.

[0046] A first connecting rod 3, installed within the mounting cavity 11, has a first end 31 and a second end 32, the second end 32 engaging with a first limiting portion 111, and the first connecting rod 3 being rotatable at least around the first limiting portion 111; and...

[0047] The second connecting rod 4 is installed in the mounting cavity 11 and has a third end 41 and a fourth end 42. The third end 41 is rotatably connected to one end of the locking member 2 located in the mounting cavity 11. The fourth end 42 cooperates with the second limiting part 112. The second connecting rod 4 can rotate at least around the second limiting part 112. A rotating shaft 5 passes through the middle of the second connecting rod 4 and the first connecting rod 3. The product of the ratio of the distance from the rotating shaft 5 to the first end 31 to the distance from the first end 31 to the second end 32 and the ratio of the distance from the third end 41 to the fourth end 42 to the distance from the rotating shaft 5 to the fourth end 42 is greater than 1.

[0048] The handle assembly 6 is at least partially installed in the mounting cavity 11. One end of the handle assembly 6 is connected to the first end 31. The handle assembly 6 has a lateral travel for pulling the first end 31 to rotate, thereby causing the first connecting rod 3 and the second connecting rod 4 to rotate and drive the locking member 2 to move along the travel.

[0049] In the technical solution provided by the present invention, the traction seat body 1 has an installation cavity 11 with an opening at one end, and an installation groove 12 is recessed on the outer side of the traction seat body 1. A first through hole is provided on the side wall of the installation cavity 11, which connects the installation cavity 11 and the installation groove 12. The locking member 2 extends through the first through hole to the opening of the installation groove 12 to close the opening of the installation groove 12 and lock the traction pin. The locking member 2 can move into the installation cavity 11 to open the opening of the installation groove 12 and avoid the traction pin from exiting the installation groove 12. The traction seat 100 includes a first connecting rod 3. The first end 31 of the first connecting rod 3 is connected to one end of the handle assembly 6, and the second end 32 cooperates with the first limiting part 111 in the mounting cavity 11, allowing it to rotate at least along the first limiting part 111. Unlike the prior art, the traction seat 100 also includes a second connecting rod 4. The middle part of the first connecting rod 3 is not rotatably connected to the locking member 2, but is connected to the middle part of the second connecting rod 4 and is provided with a rotating shaft 5. The third end 41 of the second connecting rod 4 and the locking member 2 are located at one end in the mounting cavity 11. The shaft is connected, and the fourth end 42 cooperates with the second limiting part 112 in the mounting cavity 11, so it can rotate at least along the second limiting part 112. Then the distance from the third end 41 to the shaft 5 is less than the distance from the third end 41 to the fourth end 42. The second link 4 can be regarded as a lever that saves distance. Compared with the scheme in the prior art CN116674660A, when the first end 31 moves the same distance, the distance of movement of the locking member 2 is amplified. Therefore, the locking member 2 can be unlocked and locked by moving the first end 31 a small distance. Furthermore, to ensure that the distance the handle assembly 6 moves (i.e., the distance the first end 31 moves) is less than the distance the locking member 2 moves, the first link 3 and the second link 4 are considered as a distance-saving component. The first link 3 and the second link 4 can be viewed as two levers. The product of the ratio of the distance from the pivot 5 to the first end 31 to the distance from the first end 31 to the second end 32, multiplied by the ratio of the distance from the third end 41 to the fourth end 42 to the distance from the pivot 5 to the fourth end 42, is greater than 1. Through the action of these two levers, the distance the handle assembly 6 moves (i.e., the distance the first end 31 moves) is less than the distance the locking member 2 moves. It is worth mentioning that while a single link can also be used as a distance-saving lever, this solution chooses to use two links to achieve this. Because the traction seat 100 is frequently subjected to vibration and impact, the cross arrangement of two links provides greater stability than a single link, allowing the locking member 2 to maintain a relatively stable state after moving to a certain position.In the existing technology, the long travel of the end connecting the link to the handle assembly 6 can lead to interference between the first end 31 and the longitudinally extending reinforcing plate in the mounting cavity 11. This necessitates removing the reinforcing plate or moving it to the sides. However, this removal or repositioning affects the overall strength of the traction seat 100. Furthermore, the long travel of the end connecting the link to the handle assembly 6 hinders the installation of the external auxiliary unlocking device. This solution addresses the problem of the long travel of the end connecting the link to the handle assembly 6, thus ensuring the overall strength of the mounting seat and facilitating the installation of the external auxiliary unlocking device.

[0050] Furthermore, when the position of the pivot 5 on the second link 4 is determined, the first end 31 moves a certain distance, and the corresponding first link 3 rotates a certain angle. Since the distance from the pivot 5 to the second end 32 is greater than the distance from the pivot 5 to the fourth end 42, the second link 4 needs to rotate a larger angle, and correspondingly, the third end 41 moves a longer distance. This arrangement, where the distance from the pivot 5 to the second end 32 is greater than the distance from the pivot 5 to the fourth end 42, is beneficial for increasing the movement distance of the locking element 2. Theoretically, the longer the distance from the pivot 5 to the second end 32 relative to the distance from the pivot 5 to the fourth end 42, the better. On the other hand, the second link 4, as the main lever for saving distance, theoretically saves more distance the pivot 5 is closer to the fourth end 42. In practice, the rotational effects of the first link 3 and the second link 4, as well as avoiding interference with other components, also need to be considered.

[0051] It needs to be explained that the second end 32 and the first limiting part 111, and the fourth end 42 and the second limiting part 112 are not connected by a pivot. If they were, the pivot 5 would need to rotate around both the first and second limiting parts 111 and 112, and the two rotational trajectories would not coincide, causing the first connecting rod 3 and the second connecting rod 4 to jam and become unable to rotate. To ensure that the pivot 5 and the locking member 2 can move accordingly when the first end 31 is pulled, the second end 32 and the first limiting part 111, and the fourth end 42 and the second limiting part 112, not only rotate relative to each other but also move. Specifically, the first limiting part 111 is configured as a first limiting hole 1111, and the second limiting part 112 is configured as a second limiting hole 1121. The first end 31 passes through the first limiting hole 1111, and the second end 32 passes through the second limiting hole 1121. The diameter of the first limiting hole 1111 is larger than the diameter of the first end 31, and the diameter of the second limiting hole 1121 is larger than the diameter of the second end 32. The first connecting rod 3 can rotate relative to the first limiting part and can also penetrate into the first limiting hole 1111. The second connecting rod 4 is similarly designed to prevent the position from getting stuck. During the movement, the length of the first connecting rod 3 and the second connecting rod 4 penetrating into the first limiting hole 1111 and the second limiting hole 1121 is limited. The first connecting rod 3 and the second connecting rod 4 can still be regarded as "lever".

[0052] To ensure smooth rotation of the first link 3 and the second link 4, the openings of the first limiting hole 1111 and the second limiting hole 1121 are rounded.

[0053] In existing solutions, the spring tension of the handle assembly 6 is typically greater than 450N, making it inconvenient for users to pull within the installation space of the traction seat 100. A second through hole is provided on the side wall of the mounting cavity 11, through which the handle assembly 6 extends laterally. The end outside the mounting cavity 11 is for the user to pull. The traction seat 100 also includes a drive unit 8, which is installed within the mounting cavity 11 and is driven to the end of the handle assembly 6 located within the mounting cavity 11, causing the handle assembly 6 to move laterally and achieve automatic unlocking.

[0054] To prevent accidental pulling of the handle assembly and to prevent accidental disengagement due to external mechanism contact, the handle assembly 6 specifically includes a locking plate 61. The locking plate 61 extends laterally and has a second through hole. A first slot 611 is provided on one side of the locking plate 61, with one side wall facing the inner wall of the mounting cavity 11, for abutting against the inner wall of the mounting cavity 11. When the handle assembly 6 is pulled laterally, the first slot 611 abuts against the inner wall of the mounting cavity 11, limiting further pulling and preventing disengagement. The end of the locking plate 61 located inside the mounting cavity 11 is connected to the first end 31.

[0055] For successful unlocking during normal user operation, the handle assembly 6 needs to rotate to disengage the first slot 611 from the inner wall of the mounting cavity 11. Specifically, the drive unit 8 further includes a drive cylinder 81, which extends laterally and is fixedly disposed within the mounting cavity 11, having a drive end that moves laterally. The locking plate 61 has a laterally extending groove 613. The pull rod 62 assembly includes a pull rod 62 and a crank rod 63. The pull rod 62 extends laterally and passes through a second through hole. The pull rod 62 and the locking plate 61 are stacked in the thickness direction. The pull rod 62 has a longitudinally protruding clearance portion 621 that extends beyond the locking plate 61. The clearance portion 621 gradually decreases in width along the longitudinal direction towards the interior of the mounting cavity 11. The clearance portion 621 and the first slot 611 are longitudinally corresponding. The existence of the clearance portion 621 provides ample space within the second passage for the handle assembly 6 to rotate. At this point, a force different from the lateral direction is also required. One end of the crank rod 63 is connected to the drive shaft, and the other end passes through the sliding groove 613 and is connected to the shaft at the end of the pull rod 62 located within the mounting cavity 11. Since the crank rod 63 rotates due to the drive shaft, it pulls the locking plate 61 through the sliding groove 613, subjecting the locking plate 61 to a torque, thus causing the locking plate 61 to rotate. The first slot 611 disengages from the inner wall of the mounting cavity 11, further pulling the handle assembly 6 to unlock it.

[0056] In order to maintain the unlocked state after unlocking, a second slot 612 is provided on the side of the locking plate 61 opposite to the first slot 611. The opening of the second slot 612 is opposite to that of the first slot 611, and it is used to abut against the outer wall of the traction seat body 1 to prevent the handle assembly 6 from moving into the mounting cavity 11.

[0057] Because the handle assembly 6 can be unlocked by rotating and then moving in the same direction, if it moves into the mounting cavity 11 in the same direction, the second slot 612 cannot abut against the outer wall of the traction seat body 1. Therefore, an external force is needed to change the direction of the handle assembly 6. Specifically, the traction seat 100 includes a first spring 7. The first end of the first spring 7 is fixedly connected to the end of the locking plate 61 located in the mounting cavity 11. The second end of the first spring 7 is fixedly connected to the side wall of the mounting cavity 11. The second end is located on the same side of the first slot as the second slot in the longitudinal direction. The first spring 7 is used to adjust the handle assembly 6 to a laterally extended state and pull the handle assembly 6 into the mounting cavity 11 so that the second slot 612 abuts against the outer wall of the traction seat body 1.

[0058] Furthermore, the present invention provides a vehicle including a towing seat 100, the towing seat 100 including: a towing seat body 1 having a mounting cavity 11 and a mounting groove 12, the mounting groove 12 being used to mount a towing pin, a first through hole being provided on the side wall of the mounting cavity 11, the first through hole connecting the mounting cavity 11 and the mounting groove 12, and a first limiting part 111 and a second limiting part 112 being fixedly disposed in the mounting cavity 11;

[0059] The locking member 2 extends laterally and passes through the first through hole, and has a lateral travel for closing or opening the opening of the mounting groove 12 to achieve locking or unlocking.

[0060] A first connecting rod 3, installed within the mounting cavity 11, has a first end 31 and a second end 32, the second end 32 engaging with a first limiting portion 111, and the first connecting rod 3 being rotatable at least around the first limiting portion 111; and...

[0061] The second connecting rod 4 is installed in the mounting cavity 11 and has a third end 41 and a fourth end 42. The third end 41 is rotatably connected to one end of the locking member 2 located in the mounting cavity 11. The fourth end 42 cooperates with the second limiting part 112. The second connecting rod 4 can rotate at least around the second limiting part 112. A rotating shaft 5 passes through the middle of the second connecting rod 4 and the first connecting rod 3. The product of the ratio of the distance from the rotating shaft 5 to the first end 31 to the distance from the first end 31 to the second end 32 and the ratio of the distance from the third end 41 to the fourth end 42 to the distance from the rotating shaft 5 to the fourth end 42 is greater than 1.

[0062] The handle assembly 6 is at least partially installed in the mounting cavity 11. One end of the handle assembly 6 is connected to the first end 31. The handle assembly 6 has a lateral travel for pulling the first end 31 to rotate, thereby causing the first connecting rod 3 and the second connecting rod 4 to rotate and drive the locking member 2 to move along the travel.

[0063] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made under the concept of the present invention using the contents of the present invention specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A traction seat, characterized in that, include: The traction seat body has an installation cavity and an installation groove. The installation groove is used to install a traction pin. A first through hole is provided on the side wall of the installation cavity, which connects the installation cavity and the installation groove. A first limiting part and a second limiting part are fixedly provided in the installation cavity. A second through hole is formed on the side wall of the installation cavity. A locking element extends laterally and passes through the first through hole, having a lateral travel for closing or opening the mounting slot opening to achieve locking or unlocking. A first connecting rod, installed within the mounting cavity, has a first end and a second end, the second end engaging with a first limiting portion, and the first connecting rod being rotatable at least around the first limiting portion; and The second connecting rod, installed in the mounting cavity, has a third end and a fourth end. The third end is pivotally connected to one end of the locking member located in the mounting cavity. The fourth end cooperates with the second limiting part. The second connecting rod can rotate at least around the second limiting part. A pivot is provided through the middle of the second connecting rod and the first connecting rod. The product of the ratio of the distance from the pivot to the first end to the distance from the first end to the second end and the ratio of the distance from the third end to the fourth end to the distance from the pivot to the fourth end is greater than 1. A handle assembly extends laterally and passes through the second through hole. The handle assembly includes a locking plate, which extends laterally and passes through the second through hole. A first slot is provided on one side of the locking plate, and one side wall of the first slot faces the inner side wall of the mounting cavity for abutting against the inner side wall of the mounting cavity. One end of the locking plate located in the mounting cavity is connected to the first end. The handle assembly has a lateral travel for pulling the first end to move, causing the first connecting rod and the second connecting rod to rotate and drive the locking member to move along the travel. The driving unit includes a driving cylinder, which is installed in the mounting cavity. The driving cylinder extends laterally and is fixedly disposed in the mounting cavity. It has a driving end that moves laterally and is drivingly connected to the handle assembly, thereby driving the handle assembly to move laterally. The locking plate is provided with a transversely extending groove; the handle assembly further includes a pull rod and a crank rod, the pull rod extends transversely and passes through the second through hole, the pull rod and the locking plate are stacked in the thickness direction, the pull rod has a longitudinally protruding avoidance portion protruding from the locking plate, the width of the avoidance portion gradually decreases in the longitudinal direction towards the interior of the mounting cavity, the avoidance portion is longitudinally corresponding to the first slot; one end of the pull rod located outside the traction seat body is spring-connected to one end of the locking plate located outside the traction seat body; one end of the crank rod is connected to the drive end shaft, and the other end passes through the groove and is connected to the shaft at the end of the pull rod located inside the mounting cavity.

2. The traction seat as described in claim 1, characterized in that, The distance from the rotating shaft to the second end is greater than the distance from the rotating shaft to the fourth end.

3. The traction seat as described in claim 1, characterized in that, The first limiting part includes a first limiting hole, and the first end portion passes through the first limiting hole. The diameter of the first limiting hole is larger than the diameter of the first end portion. The second limiting part includes a second limiting hole, and the second end portion passes through the second limiting hole. The diameter of the second limiting hole is larger than the diameter of the second end portion.

4. The traction seat as described in claim 3, characterized in that, The openings of the first limiting hole and the second limiting hole are rounded.

5. The traction seat as described in claim 1, characterized in that, A second slot is provided on the side of the locking plate opposite to the first slot. The second slot has an opening opposite to the first slot and is used to abut against the outer wall of the traction seat body.

6. The traction seat as described in claim 5, characterized in that, The traction seat includes a first spring, a first end of which is fixedly connected to one end of the locking plate located in the mounting cavity, and a second end of which is fixedly connected to the side wall of the mounting cavity. The second end is located on the same side of the first slot in the longitudinal direction as the second slot.

7. A vehicle, characterized in that, The vehicle includes a towing seat as described in any one of claims 1 to 6.

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