Traction device and vehicle

Abstract

The invention discloses a traction device and a vehicle, and belongs to the technical field of vehicles. The traction device comprises a dragging assembly, a driving assembly and a connecting assembly. The connecting assembly is suitable for being installed on a first vehicle and comprises a connecting piece and a telescopic piece, the telescopic piece extends in the first direction, the connecting piece is connected with the telescopic piece, the connecting piece extends in the second direction intersecting with the first direction, and the first direction is parallel to the width direction of the vehicle. The dragging assembly is rotatably connected with the connecting piece and is suitable for being connected with a second vehicle. The driving assembly is connected with the telescopic part and used for driving the telescopic part to stretch or retract in the first direction. By adopting the technical scheme provided by the invention, the application range of the traction device can be expanded.

Description

Technical Field

[0001] This application relates to the technical field of vehicles, and particularly to a towing device and a vehicle. Background Art

[0002] A trailer hitch is a towing device that can be installed on a vehicle. During vehicle road test or driving, if the vehicle breaks down or is damaged, the trailer hitch can be used to tow the damaged vehicle. By setting up the trailer hitch, the safety and stability of the towing process can be ensured.

[0003] In the related art, the size of the trailer hitch is fixed, and different vehicle models cannot share the same trailer hitch. That is to say, the applicable range of the trailer hitch is relatively narrow and the adaptability is low. Summary of the Invention

[0004] In view of this, this application provides a towing device and a vehicle, which can improve the applicable range of the towing device, that is, improve the adaptability of the towing device.

[0005] On the one hand, an embodiment of this application provides a towing device, which includes a dragging component, a driving component and a connecting component;

[0006] The connecting component is adapted to be installed on a first vehicle. The connecting component includes a connecting piece and a telescopic piece. The telescopic piece extends along a first direction. The connecting piece is connected to the telescopic piece. The connecting piece extends along a second direction that intersects the first direction. The first direction is parallel to the width direction of the vehicle;

[0007] The dragging component is rotatably connected to the connecting piece and is adapted to be connected to a second vehicle;

[0008] The driving component is connected to the telescopic piece. The driving component is used to drive the telescopic piece to extend or contract along the first direction.

[0009] Optionally, the driving component includes a motor, a gear and at least one rack. The first end of the output shaft of the motor is connected to the gear. The first tooth surface of the gear meshes with the rack. The rack extends along the first direction;

[0010] The telescopic piece includes at least one supporting part and at least one moving part. At least part of the moving part is sleeved on the corresponding supporting part and is movably connected to the supporting part. The rack is connected to the corresponding moving part.

[0011] Optionally, the telescopic piece further includes at least one connecting part. The connecting part is connected to the moving part and is adapted to be connected to the first vehicle.

[0012] Optionally, the traction device further comprises a locking assembly, wherein the locking assembly comprises a moving rod and a locking block;

[0013] The locking block abuts against a side of the motor away from the gear, and is connected to a second end of the output shaft of the motor opposite to the first end;

[0014] The moving rod is located in the connecting member and can reciprocate in the second direction;

[0015] When the dragging assembly rotates from the folding position to the dragging position relative to the connecting member, the dragging assembly pushes the moving rod to move toward the driving assembly and engages with the locking block.

[0016] Optionally, the locking assembly further includes a first limit plate, an elastic member and a second limit plate, and the moving rod passes through the first limit plate, the elastic member and the second limit plate in sequence;

[0017] The first limit plate is located between the driving assembly and the second limit plate, and the first limit plate is fixed in the connecting member;

[0018] Two ends of the elastic member are respectively connected to the first limiting plate and the second limiting plate;

[0019] The second limiting plate is fixedly connected to the moving rod.

[0020] Optionally, the towing assembly comprises a support member and a rotating shaft, two ends of the support member are respectively connected to the second vehicle and the rotating shaft, the rotating shaft extends along the direction of gravity, and a side wall of the rotating shaft is provided with a protrusion;

[0021] One end of the connecting member away from the telescopic member is hinged to the supporting member, the connecting member comprises a sleeve and a shell member, two ends of the shell member are respectively connected to the sleeve and the telescopic member, the sleeve is sleeved on the rotating shaft, the sleeve is provided with a limiting groove extending in the circumferential direction, and the protrusion is located in the limiting groove;

[0022] The moving rod is located in the shell member. When the dragging assembly is in the folded position, the first end of the moving rod extends into the limiting through groove and is misaligned with the protrusion in the circumferential direction of the rotating shaft, and the second end is misaligned with the locking block in the second direction. When the dragging assembly is rotated to the dragging position, the protrusion abuts against the first end of the moving rod, and the moving rod is pushed by the protrusion to move toward the driving assembly, and the second end of the moving rod is engaged with the locking block.

[0023] Optionally, the support member includes a first bracket, a second bracket and a third bracket;

[0024] The first bracket is adapted to be connected to a second vehicle;

[0025] The second bracket is connected to the first bracket and extends towards the drive assembly;

[0026] The third bracket is connected to the first bracket and extends towards the drive assembly, and the second bracket and the third bracket are oppositely arranged in the direction of gravity;

[0027] Both ends of the rotating shaft are respectively connected to the second bracket and the third bracket.

[0028] Optionally, the housing member includes a first side wall and a second side wall that are opposite in the first direction;

[0029] The first side wall is provided with a first avoidance groove with an opening facing the sleeve;

[0030] The second side wall is provided with a second avoidance groove with an opening facing the sleeve, and the first avoidance groove and the second avoidance groove are oppositely arranged in the first direction.

[0031] Optionally, the connection assembly further includes a reinforcing plate, and the reinforcing plate is respectively connected to the connecting member and the telescopic member.

[0032] On the other hand, an embodiment of the present application further provides a vehicle, and the vehicle includes the traction device described in any one of the above embodiments of the present application.

[0033] The traction device provided by the embodiment of the present application includes a dragging assembly, a drive assembly, and a connection assembly. The connection assembly is adapted to be installed on a first vehicle, and the connection assembly includes a telescopic member and a connecting member that are connected and cross each other. The dragging assembly is rotatably connected to the connecting member and is adapted to be connected to a second vehicle. The drive assembly can drive the telescopic member to extend or contract in the first direction, that is, the size of the telescopic member in the width direction of the vehicle can be adjusted, so that different models of the first vehicle with different sizes can share the same traction device. That is to say, the traction device provided by the embodiment of the present application has a wide application range and high adaptability. Description of the Drawings

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0035] Figure 1 It is a schematic structural diagram of a traction device provided by an embodiment of the present application;

[0036] Figure 2It is a schematic structural diagram of a traction device provided by an embodiment of the present application;

[0037] Figure 3 It is an exploded view of a traction device provided by an embodiment of the present application;

[0038] Figure 4 It is a schematic structural diagram of a part of the structure in a traction device provided by an embodiment of the present application;

[0039] Figure 5 is Figure 4 A partial enlarged view of the A1 position in a traction device provided by an embodiment of the present application as shown;

[0040] Figure 6 It is a schematic structural diagram of a part of the structure in a traction device provided by an embodiment of the present application;

[0041] Figure 7 is Figure 6 A partial enlarged view of the A2 position in a traction device provided by an embodiment of the present application as shown;

[0042] Figure 8 It is a schematic structural diagram of a part of the structure in a traction device provided by an embodiment of the present application;

[0043] Figure 9 It is a schematic structural diagram of a part of the structure in a traction device provided by an embodiment of the present application;

[0044] Figure 10 It is a block diagram of some components in a traction device provided by an embodiment of the present application.

[0045] Reference numerals:

[0046] 100, dragging assembly; 110, support member; 120, rotating shaft; 111, first bracket; 112, second bracket; 113, third bracket; 114, trailer ball; 121, convex block; 122, first inclined surface; 123, arc surface; 124, second inclined surface; 125, concave pit;

[0047] 200, driving assembly; 210, motor; 220, gear; 230, rack; 211, output shaft;

[0048] 300, connecting assembly; 310, connecting member; 320, telescopic member; 330, reinforcing plate; 311, sleeve; 312, housing member; 313, first housing; 314, second housing; 315, avoidance portion; 316, dust-proof plate; 321, support portion; 322, moving portion; 323, connecting portion; 3111, limiting through groove; 3121, first side wall; 3123, first avoidance groove; 3124, first groove wall; 3125, second groove wall;

[0049] 400, Locking Assembly; 410, Moving Rod; 420, Locking Block; 430, First Limiting Plate; 440, Elastic Member; 450, Second Limiting Plate; 411, Second Tooth Surface; 412, Teeth; 421, Engaging Tooth Groove

[0050] 500, Bolt

[0051] 600, Power Supply Device

[0052] 700, Controller

[0053] 800, Distance Sensor

[0054] Through the above-mentioned drawings, specific embodiments of the present application have been shown, and more detailed descriptions will be provided hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed Embodiments

[0055] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0056] Before further detailed description of the embodiments of the present application, the directional terms involved in the embodiments of the present application, such as "upper", "lower", and "side", are based on Figure 1 the orientation shown in the figure, and are only used to clearly describe the composition structure of the connector assembly in the embodiments of the present application, and do not have the meaning of limiting the protection scope of the present application. Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meaning as commonly understood by those skilled in the art.

[0057] To make the technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below in conjunction with the drawings.

[0058] As Figure 1 shown, the embodiments of the present application provide a traction device, which includes a dragging assembly 100, a driving assembly 200, and a connecting assembly 300.

[0059] The connecting assembly 300 is adapted to be installed on a first vehicle. The connecting assembly 300 includes a connecting member 310 and a telescopic member 320. The telescopic member 320 extends in a first direction. The connecting member 310 is connected to the telescopic member 320. The connecting member 310 extends in a second direction that intersects the first direction. The first direction is parallel to the width direction of the vehicle. In some embodiments, the second direction is perpendicular to the first direction, that is, the second direction is the length direction of the vehicle.

[0060] The dragging assembly 100 is rotatably connected to the connecting member 310 and is adapted to be connected to a second vehicle.

[0061] The driving assembly 200 is connected to the telescopic member 320. The driving assembly 200 is used to drive the telescopic member 320 to extend or contract in the first direction.

[0062] As can be seen from the above, since the driving assembly 200 can drive the telescopic member 320 to extend or contract in the first direction, that is, the size of the telescopic member 320 in the width direction of the vehicle can be adjusted, different-sized first vehicle models can share the same towing device. That is to say, the applicable range of the towing device provided by the embodiments of the present application is relatively wide.

[0063] It should be noted that one of the first vehicle and the second vehicle in the embodiments of the present application is a towing vehicle, and the other is a towed vehicle. The towed vehicle can be, for example, an automobile or a trailer, etc. When the first vehicle is a towing vehicle and the second vehicle is a towed vehicle, the towing device can be installed at the rear of the towing vehicle and connected to the head of the towed vehicle through the dragging assembly 100. Thus, after the towing vehicle starts, it can drag the towed vehicle to move, so as to be able to drag the towed vehicle. When the first vehicle is a towed vehicle and the second vehicle is a towing vehicle, the towing device can be installed at the head of the towed vehicle, and the dragging assembly 100 can be snap-fitted with the connection structure at the rear of the towing vehicle. Since the size of the same towing device in the first direction can be adjusted, it is only necessary to adjust the size of the towing vehicle to a size adapted to any nearby vehicle model and install it on the towing vehicle or the towed vehicle, and then the rapid rescue or dragging of the towed vehicle can be completed. Since there is no need to allocate a uniquely adapted fixed-size towing device for the towing vehicle or the towed vehicle everywhere, the rescue or dragging efficiency can be greatly improved.

[0064] The following Figures 1 to 10 will more specifically and elaborately describe the details and functions of the towing device provided by the embodiments of the present application.

[0065] Combined with Figure 4 、 Figure 5 and Figure 8As shown, in some embodiments, the driving assembly 200 includes a motor 210, a gear 220 and at least one rack 230, the first end of the output shaft 211 of the motor 210 is connected to the gear 220, the first tooth surface of the gear 220 is meshed with the rack 230, and the rack 230 extends along a first direction. It should be noted that the motor 210 in the embodiment of the present application can rotate forward and reverse, one of the forward rotation and the reverse rotation is instantaneous rotation, and the other is counterclockwise rotation.

[0066] The telescopic member 320 includes at least one supporting portion 321 and at least one moving portion 322, at least part of the moving portion 322 is sleeved on the corresponding supporting portion 321 and is movably connected to the supporting portion 321, and the rack 230 is connected to the corresponding moving portion 322. In this arrangement, when the output shaft 211 of the motor 210 rotates, the gear 220 can rotate synchronously with the output shaft 211, and then the first tooth surface of the gear 220 can drive the rack 230 to retract inward or extend outward, thereby driving the moving portion 322 to retract inward or extend outward relative to the supporting portion 321, so as to shorten or increase the size of the telescopic member 320 in the first direction.

[0067] like Figure 2 As shown, in some embodiments, the telescopic member 320 further includes at least one connecting portion 323, which is connected to the moving portion 322 and is suitable for connecting to the first vehicle. It should be noted that the connecting portion 323 can be fixedly connected to the first vehicle by bolts 500, and the connecting portion 323 can be installed at a position such as a chassis, a frame or a bumper of the first vehicle. At least three bolt 500 holes are provided on the connecting portion 323, and the bolts 500 pass through the corresponding bolt 500 holes and are installed on the first vehicle. In this way, the stability of the connection between the connecting portion 323 and the first vehicle can be improved. The connecting portion 323 can be, for example, plate-shaped.

[0068] like Figure 2 As shown, in some embodiments, the connecting line between the centers of the three bolt holes 500 on the connecting portion 323 forms a triangle, which can further improve the stability of the connection between the connecting portion 323 and the first vehicle, thereby improving the safety and reliability of the vehicle towing process.

[0069] Combination Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 9 As shown, in some embodiments, the traction device further includes a locking assembly 400, which includes a moving rod 410 and a locking block 420. The locking block 420 abuts against a side of the motor 210 away from the gear 220, and is connected to a second end of the output shaft 211 of the motor 210 opposite to the first end. In this way, the locking block 420 can rotate with the rotation of the output shaft 211.

[0070] The moving rod 410 is located within the connecting member 310 and can reciprocate in the second direction. When the dragging assembly 100 rotates relative to the connecting member 310 from the folded position to the dragging position, the dragging assembly 100 pushes the moving rod 410 to move towards the driving assembly 200 and engages with the locking block 420. With such a setting, after the size of the telescopic member 320 of the connecting assembly 300 has been adjusted, by rotating the dragging assembly 100 to the dragging position, since the moving rod 410 can engage with the locking block 420, the moving rod 410 can limit the further rotation of the locking block 420, and thus the output shaft 211 of the motor 210 connected to the locking block 420 cannot rotate further. Thereby, it can be ensured that during the process of dragging the vehicle, the size of the telescopic rod does not change, improving the stability of the dragging process and also enhancing the safety of the towing process. It should be noted that when the first vehicle does not need to be towed or when towing other vehicles, the dragging assembly 100 can be in the folded position where it does not protrude from the bottom of the vehicle, that is, the position where the dragging assembly 100 is parallel to the first direction. When the first vehicle needs to be towed or when towing other vehicles, the dragging assembly 100 can be rotated to the dragging position where it protrudes from the bottom of the vehicle, that is, the position where the dragging assembly 100 is parallel to the second direction.

[0071] As Figure 8 shown, in some embodiments, the driving assembly 200 includes two racks 230. The two racks 230 are located on both sides of the gear 220 and are oppositely arranged in a direction parallel to the direction of gravity. It should be noted that the direction of gravity in the embodiments of the present application is parallel to the height direction of the vehicle. The telescopic member 320 includes two support portions 321 and two moving portions 322. Each group of support portions 321 and moving portions 322 are respectively connected to both sides of the connecting member 310 and are symmetrically arranged with respect to the connecting member 310. The two moving portions 322 are respectively connected to the corresponding racks 230. It should be understood that when the motor 210 rotates, it can drive the racks 230 on both sides to move simultaneously, and thus can drive the two moving portions 322 to move towards each other to reduce the size of the telescopic member 320 in the first direction; or can drive the two moving portions 322 to move away from each other to increase the size of the telescopic member 320 in the first direction. With such a setting, not only can it be ensured that the connecting assembly 300 is in force balance in the first direction to improve the stability of the vehicle towing process, but also the two moving portions 322 on both sides can move simultaneously, thereby improving the efficiency of adjusting the size of the telescopic member 320.

[0072] Combined with Figure 8 shown, in some embodiments, one of the support portion 321 and the moving portion 322 is provided with a sliding groove, and the other is provided with a sliding rail. The sliding groove and the sliding rail both extend along the first direction. The sliding rail is located within the sliding groove and can move relative to the sliding groove. With such a setting, the flexibility of the moving portion 322 moving relative to the support portion 321 can be improved, and the efficiency of adjusting the size of the telescopic member 320 can be enhanced.

[0073] Combined with Figure 3 and Figure 5 As shown, in some embodiments, the locking assembly 400 further includes a first limiting plate 430, an elastic member 440, and a second limiting plate 450. The moving rod 410 sequentially passes through the first limiting plate 430, the elastic member 440, and the second limiting plate 450. The first limiting plate 430 is located between the driving assembly 200 and the second limiting plate 450, and the first limiting plate 430 is fixed within the connecting member 310. For example, the first limiting rod can be welded to the inner wall of the connecting member 310. Thus, the first limiting plate 430 can axially limit the moving rod 410 to prevent the moving rod 410 from deviating during movement.

[0074] Both ends of the elastic member 440 are respectively connected to the first limiting plate 430 and the second limiting plate 450. The second limiting plate 450 is fixedly connected to the moving rod 410. It can be understood that when the moving rod 410 is pushed by the dragging assembly 100 and moves towards the driving assembly 200, the elastic member 440 is in a compressed state. When the dragging assembly 100 rotates back to the folded position, under the action of the elastic restoring force of the elastic member 440, the moving rod 410 moves in a direction away from the driving assembly 200 and disengages from the locking block 420. At this time, the driving assembly 200 can continue to rotate. The setting of the elastic member 440 enables the moving rod 410 to automatically reset, improving the flexibility of the movement of the moving rod 410. The elastic member 440 can be, for example, a spring.

[0075] Combined with Figure 2 and Figure 3 As shown, in some embodiments, the dragging assembly 100 includes a support member 110 and a rotating shaft 120. Both ends of the support member 110 are respectively connected to the second vehicle and the rotating shaft 120. The rotating shaft 120 extends along the direction of gravity, and a convex block 121 is provided on the side wall of the rotating shaft 120.

[0076] One end of the connecting member 310 away from the telescopic member 320 is hinged to the support member 110. The connecting member 310 includes a sleeve 311 and a housing member 312. Both ends of the housing member 312 are respectively connected to the sleeve 311 and the telescopic member 320. The sleeve 311 is sleeved on the rotating shaft 120, and the sleeve 311 is provided with a circumferentially extending limiting through groove 3111. The convex block 121 is located within the limiting through groove 3111.

[0077] The moving rod 410 is located inside the housing member 312. When the dragging assembly 100 is in the folded position, the first end of the moving rod 410 extends into the limiting through groove 3111 and is misaligned with the convex block 121 in the circumferential direction of the rotating shaft 120, and the second end is misaligned with the locking block 420 in the second direction. At this time, the moving rod 410 and the locking block 420 are disengaged from each other, and one end of the moving rod 410 facing away from the locking block 420 can abut against the side wall of the rotating shaft 120 or have a gap with the rotating shaft 120. When the dragging assembly 100 rotates to the dragging position, the convex block 121 abuts against the first end of the moving rod 410, and the moving rod 410 is pushed by the convex block 121 to move towards the driving assembly 200, and the second end of the moving rod 410 is in snap-fit with the locking block 420. At this time, the moving rod 410 can limit the further rotation of the locking block 420 to ensure the stability of the telescopic rod size.

[0078] It can be understood that the limiting through groove 3111 can limit the moving rod 410, so that when the dragging assembly 100 rotates from the folded position to the dragging position, the moving rod 410 can always be inside the limiting through groove 3111, preventing the moving rod 410 from shifting, and further ensuring that the moving rod 410 can abut against the convex block 121 located in the limiting through groove 3111.

[0079] As Figure 9 shown, in some embodiments, the surface of the convex block 121 includes a first inclined surface 122, an arc surface 123 and a second inclined surface 124 connected in sequence. When the dragging assembly 100 is in the dragging position, the arc surface 123 faces the moving rod 410. It should be noted that the setting of the arc surface 123 and the inclined surface can reduce the friction between the moving rod 410 and the convex block 121, so that it is convenient for the top end of the moving rod 410 facing away from the locking block 420 to climb onto the arc surface 123 along the first inclined surface 122 or the second inclined surface 124, or it is convenient for the moving rod 410 to slide from the arc surface 123 to the first inclined surface 122 or the second inclined surface 124.

[0080] As Figure 9 shown, in some embodiments, the middle of the arc surface 123 has a concave pit 125, and the concave pit 125 is recessed away from the locking block 420. The concave pit 125 matches the shape of the end of the moving rod 410 facing away from the locking block 420. When the dragging assembly 100 is in the dragging position, the end of the moving rod 410 far from the locking block 420 is snapped into the concave pit 125. It should be noted that by setting the concave pit 125, it can be ensured that a snap-fit is formed between the moving rod 410 and the concave pit 125, avoiding excessive rotation of the dragging assembly 100, and also improving the stability of the engagement between the moving rod 410 and the locking block 420. Thus, when dragging the vehicle, the dragging assembly 100 can be prevented from rotating, improving the stability of the traction device.

[0081] Combined with Figure 6 and Figure 7As shown, in some embodiments, a second tooth surface 411 is provided on the circumference of one end of the moving rod 410 away from the dragging assembly 100. A engaging tooth groove 421 that cooperates with the second tooth surface 411 is provided on the side of the locking block 420 facing the dragging assembly 100. When the dragging assembly 100 is in the folded position, the second tooth surface 411 and the engaging tooth groove 421 are axially misaligned with each other on the moving rod 410, that is, at this time, the locking block 420 can rotate with the output shaft 211 of the motor 210. When the dragging assembly 100 rotates to the dragging position, the convex block 121 pushes the moving rod 410 into the engaging tooth groove 421 to limit the locking block 420 from continuing to rotate, that is, the size of the telescopic member 320 can be fixed. It should be noted that the number of teeth 412 of the second tooth surface 411 is greater than 3, so as to ensure the stability of the engagement between the second tooth surface 411 and the engaging tooth groove 421. It should be understood that the number of teeth 412 cannot be too many, which is likely to reduce the stability of the engagement between the second tooth surface 411 and the engaging groove. In some embodiments, the multiple teeth 412 of the second tooth surface 411 are evenly distributed.

[0082] In some embodiments, the single rotation angle of the motor 210 is equal to the angle formed by connecting the centers of adjacent teeth 412 to the center of the moving rod 410 respectively, so as to ensure that when the motor 210 stops rotating, the teeth 412 of the second tooth surface 411 can be aligned and engaged with the engaging tooth groove 421. It should be understood that the more the number of teeth 412 of the second tooth surface 411, the smaller the single rotation angle of the motor 210, and the smaller the single size adjustment range of the telescopic member 320. The fewer the number of teeth 412 of the second tooth surface 411, the larger the single rotation angle of the motor 210, and the larger the single size adjustment range of the telescopic size. In some embodiments, the outer shape of the locking block 420 can be, for example, triangular, quadrilateral or polygonal. In the drawings of the present application, the outer shape of the locking block 420 is shown as a square for illustration.

[0083] As Figure 10 shown, in some embodiments, the motor 210 can be electrically connected to the power supply device 600 on the first vehicle through an interface, and the power supply device 600 is used to supply power to the motor 210. The motor 210 is electrically connected to the controller 700 of the first vehicle. The controller 700 is configured to generate a target rotation command in response to the electrical connection between the motor 210 and the power supply device 600. The target rotation command is used to instruct the motor 210 to rotate a target angle in the target rotation direction, so that the motor 210 rotates from the initial position to the target position. It should be noted that when the motor 210 rotates from the initial position to the target position, the telescopic member 320 rotates from the initial length to the target length. After the motor 210 stops rotating, the dragging assembly 100 can rotate from the folded position to the dragging position, so that the moving rod 410 is pushed to be engaged with the locking block 420, that is, the moving rod 410 moves from Figure 7 the position misaligned with the locking block 420 as shown to Figure 5The position engaged with the locking block 420 is shown as follows. The following table illustrates the rotation of the motor 210 in two directions:

[0084]

[0085] It should be noted that the power-on intervals of the motor 210 are all in integer seconds, for example, it can be accurate to 1S. Because at integer seconds, the attitude of the rotor of the motor 210 can make the second tooth surface 411 of the moving rod 410 correspond to the engaging tooth groove 421 of the locking block 420, that is, to ensure that the second tooth surface 411 can be inserted into the engaging tooth groove 421.

[0086] As Figure 10 shown, in some embodiments, the traction device further includes a distance sensor 800. The distance sensor 800 is used to detect the current distance between both ends of the telescopic member 320. It should be understood that the current distance is the current dimension of the telescopic member 320 in the first direction. The distance sensor 800 is electrically connected to the controller 700. The controller 700 is electrically connected to the motor 210. The method for adjusting the traction device is described as follows:

[0087] First step, in response to the signal sent by the motor 210 indicating that the motor 210 has been electrically connected to the power supply device 600, the controller 700 generates an acquisition instruction and sends the acquisition instruction to the distance sensor 800.

[0088] Second step, in response to receiving the acquisition instruction, the distance sensor 800 sends the first distance to the controller 700, where the first distance is the current width of the telescopic member 320 before adjustment.

[0089] Third step, based on the current width and the target width, the controller 700 determines the adjustment width and generates an adjustment instruction based on the adjustment width. The controller 700 sends the adjustment instruction to the motor 210. The difference between the target width and the current width is the adjustment width, and the target width is the adapted width that enables the connection component 300 to be installed on the first vehicle. It should be understood that there is a corresponding relationship between the power-on time of the motor 210 and the adjustment width.

[0090] Fourth step, based on the adjustment instruction, the motor 210 rotates from the initial position to the target position.

[0091] Fifth step, the dragging component 100 is rotated from the folded position to the dragging position, so that the moving rod 410 is engaged with the locking block 420 to limit the continuous rotation of the motor 210.

[0092] It should be noted that after the dragging is completed, the dragging component 100 can be first rotated from the dragging position to the folded position to disengage the moving rod 410 from the locking block 420, and then the motor 210 is rotated in the reverse direction according to the above steps, so that the telescopic member 320 can be restored to the initial width.

[0093] Combined with Figure 2 and Figure 3 As shown, in some embodiments, the support member 110 includes a first bracket 111, a second bracket 112, and a third bracket 113. The first bracket 111 is adapted to be connected to a second vehicle. The second bracket 112 is connected to the first bracket 111 and extends toward the drive assembly 200. The third bracket 113 is connected to the first bracket 111 and extends toward the drive assembly 200, and the second bracket 112 and the third bracket 113 are oppositely arranged in the direction of gravity. Both ends of the rotating shaft 120 are respectively connected to the second bracket 112 and the third bracket 113. With such an arrangement, the support member 110 has relatively high stability. The first bracket 111, the second bracket 112, and the third bracket 113 can all be plate-shaped.

[0094] Combined with Figure 2 and Figure 3 As shown, in some embodiments, the support member 110 further includes a trailer ball 114, and the trailer ball 114 is fixed to the first bracket 111 by bolts 500. The trailer ball 114 is snap-fitted with a connection structure on the second vehicle, so that the first vehicle and the second vehicle can be connected together.

[0095] Combined with Figure 2 and Figure 3 As shown, in some embodiments, the housing member 312 includes a first side wall 3121 and a second side wall that are opposite in a first direction. The first side wall 3121 is provided with a first avoidance groove 3123 with an opening facing the sleeve 311. The second side wall is provided with a second avoidance groove (not shown in the figure) with an opening facing the sleeve 311, and the first avoidance groove 3123 and the second avoidance groove are oppositely arranged in the first direction. By providing the first avoidance groove 3123 and the second avoidance groove, interference with the rotation of the sleeve 311 caused by the housing member 312 can be avoided.

[0096] Combined with Figure 2 and Figure 3 As shown, in some embodiments, the first avoidance groove 3123 includes a first groove wall 3124 and a second groove wall 3125 that are opposite in the direction of gravity, and the notch of the limit through groove 3111 is located between the first groove wall 3124 and the second groove wall 3125 in a direction parallel to the direction of gravity. In this way, interference with the rotation of the bump 121 caused by the housing member 312 during the rotation of the dragging assembly 100 can be avoided, and the dragging assembly 100 can rotate smoothly.

[0097] Combined with Figure 2 and Figure 3As shown, in some embodiments, the housing member 312 includes a first housing 313 and a second housing 314. A part of the first housing 313 is sleeved on the second housing 314 and fixed to the second housing 314 by bolts 500, and another part extends toward the drive assembly 200 and is connected to the connection assembly 300. For example, both sides of one end of the first housing 313 close to the drive assembly 200 are respectively connected to the corresponding support portions 321. The first limiting plate 430 is located inside the first housing 313 and fixedly connected to the inner wall of the first housing 313, for example, by welding. The second limiting plate 450 and the elastic member 440 are located inside the second housing 314. One end of the second housing 314 away from the drive assembly 200 is connected to the sleeve 311. With such an arrangement, the second housing 314 can better protect the second limiting plate 450 and the elastic member 440. It should be understood that a part of the moving rod 410 is located inside the second housing 314 and another part is located inside the first housing 313. The first housing 313 and the second housing 314 can better protect the moving rod 410.

[0098] As Figure 2 shown, in some embodiments, an avoidance portion 315 is provided on the part of the first housing 313 sleeved on the second housing 314. The avoidance portion 315 can be a groove or an avoidance hole. Thereby, the structure on the first vehicle can be avoided, ensuring that the traction device can be installed on the first vehicle. It should be noted that the accompanying drawings of the present application are schematically shown with an avoidance hole provided on the first housing 313 as an example. The first housing 313 and the second housing 314 can both be tubular, for example.

[0099] Combined with Figure 2 and Figure 5 shown, in some embodiments, the housing member 312 further includes a dust-proof plate 316. The motor 210 is installed on the dust-proof plate 316, the output shaft 211 penetrates through the dust-proof plate 316, and the gear 220 is located on the side of the dust-proof plate 316 facing away from the dragging assembly 100. The dust-proof plate 316 seals one end of the second housing 314 away from the dragging assembly 100, thereby improving the sealing performance of the traction device.

[0100] As Figure 2As shown, in some embodiments, the connecting component 300 further includes a reinforcing plate 330, and the reinforcing plate 330 is respectively connected to the connecting member 310 and the telescopic member 320. It should be noted that the reinforcing plate 330 can improve the strength of the connecting member 310 and the telescopic member 320, and ensure that the connecting member 310 and the telescopic member 320 can be stably connected together. The reinforcing plate 330 can be welded to the connecting member 310 and the telescopic member 320 respectively or fixedly connected by fixing members such as bolts 500. In some embodiments, the reinforcing plate 330 is located below the connecting member 310 and the telescopic member 320, and the upper surface of the reinforcing plate 330 is connected to the bottom surface of the connecting member 310 and the bottom surface of the telescopic member 320, so that the reinforcing plate 330 can support the connecting member 310 and the telescopic member 320 and improve the strength of the connecting member 310 and the telescopic member 320.

[0101] In summary, the embodiments of the present application provide a traction device with easy-to-adjust size and high strength, so that the same traction device can be adapted to multiple vehicle models with different sizes. That is to say, the traction device provided by the embodiments of the present application has a wide application range and high adaptability. Whether it is a vehicle damaged during the road test in the vehicle development process or a vehicle that has been used by users and encounters damage, etc., the traction device can be adjusted to the appropriate size in time, so that it can be installed in vehicles of different sizes, which can greatly speed up the rescue speed.

[0102] On the other hand, the embodiments of the present application also provide a vehicle, and the vehicle includes the traction device described in any one of the above embodiments of the present application. It should be noted that the composition and functions of the traction device in the vehicle provided by the embodiments of the present application are the same as those of the traction device provided in the above embodiments of the present application, so the embodiments of the present application will not be repeated here. The traction device can be installed at the front or rear of the vehicle.

[0103] Those skilled in the art will readily conceive of other embodiments of the present application after considering the specification and practicing the present application disclosed herein. The present application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of the present application and include known common knowledge or conventional technical means in the technical field not disclosed in the present application. The specification and examples are only to be considered as exemplary.

[0104] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. A traction device, characterized in that: The traction device comprises a traction component (100), a driving component (200) and a connecting component (300); The connection assembly (300) is suitable for being installed on a first vehicle, the connection assembly (300) comprises a connection member (310) and a telescopic member (320), the telescopic member (320) extending along a first direction, the connection member (310) being connected to the telescopic member (320), the connection member (310) extending along a second direction intersecting the first direction, the first direction being parallel to a width direction of the vehicle; The towing assembly (100) is rotatably connected to the connecting member (310) and is suitable for being connected to a second vehicle; The driving assembly (200) is connected to the telescopic member (320), and the driving assembly (200) is used to drive the telescopic member (320) to extend or contract along the first direction.

2. The traction device according to claim 1, characterized in that: The driving assembly (200) comprises a motor (210), a gear (220) and at least one rack (230), wherein a first end of an output shaft (211) of the motor (210) is connected to the gear (220), a first tooth surface of the gear (220) is meshed with the rack (230), and the rack (230) extends along the first direction; The telescopic member (320) comprises at least one supporting portion (321) and at least one moving portion (322), at least part of the moving portion (322) is sleeved on the corresponding supporting portion (321) and is movably connected to the supporting portion (321), and the rack (230) is connected to the corresponding moving portion (322).

3. The traction device according to claim 2, characterized in that: The telescopic member (320) further comprises at least one connecting portion (323), wherein the connecting portion (323) is connected to the moving portion (322) and is suitable for being connected to the first vehicle.

4. The traction device according to claim 2, characterized in that: The traction device further comprises a locking assembly (400), wherein the locking assembly (400) comprises a moving rod (410) and a locking block (420); The locking block (420) abuts against a side of the motor (210) facing away from the gear (220), and is connected to a second end of an output shaft (211) of the motor (210) opposite to the first end; The moving rod (410) is located in the connecting member (310) and can reciprocate in the second direction; When the dragging assembly (100) rotates from the folding position to the dragging position relative to the connecting member (310), the dragging assembly (100) pushes the moving rod (410) to move toward the driving assembly (200) and engages with the locking block (420).

5. The traction device according to claim 4, characterized in that: The locking assembly (400) further comprises a first limiting plate (430), an elastic member (440) and a second limiting plate (450), and the moving rod (410) passes through the first limiting plate (430), the elastic member (440) and the second limiting plate (450) in sequence; The first limiting plate (430) is located between the driving assembly (200) and the second limiting plate (450), and the first limiting plate (430) is fixed in the connecting member (310); Two ends of the elastic member (440) are respectively connected to the first limiting plate (430) and the second limiting plate (450); The second limiting plate (450) is fixedly connected to the moving rod (410).

6. The traction device according to claim 5, characterized in that: The towing assembly (100) comprises a support member (110) and a rotating shaft (120), two ends of the support member (110) are respectively connected to the second vehicle and the rotating shaft (120), the rotating shaft (120) extends along the direction of gravity, and a protrusion (121) is provided on a side wall of the rotating shaft (120); One end of the connecting member (310) away from the telescopic member (320) is hinged to the supporting member (110); the connecting member (310) comprises a sleeve (311) and a shell member (312); two ends of the shell member (312) are respectively connected to the sleeve (311) and the telescopic member (320); the sleeve (311) is sleeved on the rotating shaft (120); the sleeve (311) is provided with a limiting groove (3111) extending in the circumferential direction; the protrusion (121) is located in the limiting groove (3111); The moving rod (410) is located in the shell (312); when the dragging assembly (100) is in the folded position, the first end of the moving rod (410) extends into the limiting slot (3111) and is offset from the protrusion (121) in the circumferential direction of the rotating shaft (120), and the second end is offset from the locking block (420) in the second direction; when the dragging assembly (100) is rotated to the dragging position, the protrusion (121) abuts against the first end of the moving rod (410), and the moving rod (410) is pushed by the protrusion (121) to move toward the driving assembly (200), and the second end of the moving rod (410) is engaged with the locking block (420).

7. The traction device according to claim 6, characterized in that: The support member (110) comprises a first bracket (111), a second bracket (112) and a third bracket (113); The first bracket (111) is suitable for connecting to a second vehicle; The second bracket (112) is connected to the first bracket (111) and extends toward the driving assembly (200); The third bracket (113) is connected to the first bracket (111) and extends toward the driving assembly (200), and the second bracket (112) and the third bracket (113) are arranged opposite to each other in the direction of gravity; Two ends of the rotating shaft (120) are respectively connected to the second bracket (112) and the third bracket (113).

8. The traction device according to claim 6, characterized in that: The housing (312) comprises a first side wall (3121) and a second side wall which are opposite to each other in the first direction; The first side wall (3121) is provided with a first avoidance groove (3123) opening toward the sleeve (311); The second side wall is provided with a second avoidance groove opening toward the sleeve (311), and the first avoidance groove (3123) and the second avoidance groove are arranged opposite to each other in the first direction.

9. The traction device according to claim 6, characterized in that: The connection assembly (300) further comprises a reinforcing plate (330), wherein the reinforcing plate (330) is respectively connected to the connecting member (310) and the telescopic member (320).

10. A vehicle, characterized in that: The vehicle comprises a traction device as claimed in any one of claims 1 to 9.

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