CN219325703U - Trailer hook and vehicle - Google Patents

Abstract

The present disclosure relates to a towing vehicle and a vehicle, the towing vehicle comprising a mount, a unhooking assembly and a buffering assembly, the mount being for connection with a towing vehicle; the unhooking component is used for being connected with a trailer; one end of the buffer component is fixedly connected with the unhooking component, and the other end of the buffer component is in sliding connection with the fixing frame; when the uncoupling component receives the acting force of the first direction applied by the trailer, the buffer component generates damping force to the uncoupling component, and the damping force direction is opposite to the first direction, so that the buffer can be realized, the hard impact of the trailer to the tractor can be reduced, the abrasion to the tractor and the trailer hook can be reduced, the service lives of the tractor and the trailer hook can be prolonged, the whole structure of the trailer hook is simpler, the complex manufacturing and assembling processes can be effectively simplified, the horizontal space occupation rate of the trailer hook is smaller, and the space layout at the tail part of the tractor can be facilitated.

Description

Trailer hook and vehicle

Technical Field

The disclosure relates to the technical field of vehicle accessories, in particular to a trailer hook and a vehicle.

Background

The utility model discloses a vehicle towing pintle structure in the related art, this towing pintle structure includes the dead lever and sets up the cushioning towing pintle structure on the dead lever, wherein the cushioning towing pintle structure includes a pair of connecting rod, the reinforcing bar, a pair of fixed connection piece, a pair of telescopic link, a pair of powerful spring, a pair of connecting block, the backup pad, the towing pintle mount, the towing pintle pole, towing pintle and fixed lockpin, so that provide the cushioning power through telescopic link concertina movement and the flexible of the powerful spring of cooperation suit above that, thereby realize when dragging the operation to the vehicle, reduce the wearing and tearing to automobile body and towing pintle structure, improve the life of trailer and towing pintle structure. However, the whole structure of the towing hook structure is complex, and the manufacturing and assembling processes are difficult, so that the horizontal space occupation of the whole structure of the towing hook is large, the space layout of the tail part of the trailer is seriously influenced, and the applicability is poor.

Disclosure of Invention

It is an object of the present disclosure to provide a towing vehicle and a vehicle, which can effectively simplify complex manufacturing and assembling processes, and at the same time, can realize buffering and reduce impact damage of hard impact to the vehicle and the towing vehicle during towing operation of the vehicle, so as to at least partially solve the above technical problems.

To achieve the above object, a first aspect of the present disclosure provides a trailer hook, comprising: the fixed mount is used for being connected with the tractor; a unhooking assembly for connection with a trailer; one end of the buffer component is fixedly connected with the unhooking component, and the other end of the buffer component is in sliding connection with the fixing frame; when the unhooking assembly is subjected to a first directional force applied by the trailer, the cushioning assembly generates a damping force on the unhooking assembly in a direction opposite to the first direction.

Optionally, the fixing frame includes a first clamping plate and a second clamping plate symmetrically arranged along the first direction, first ends of the first clamping plate and the second clamping plate are used for being connected with opposite ends of a rear anti-collision beam of the tractor along the first direction, and second ends of the first clamping plate and the second clamping plate are respectively connected with the buffer assembly in a sliding mode.

Optionally, the first clamping plate and the second clamping plate each comprise a first plate body, a second plate body and a third plate body which are sequentially connected, the second plate bodies are obliquely arranged, and a gap between the two first plate bodies is larger than a gap between the two third plate bodies; the two third plate bodies are detachably connected to opposite ends of a rear anti-collision beam of the tractor along the first direction through locking mechanisms; the two first plate bodies are connected with the buffer assemblies in a sliding manner.

Optionally, the buffer assembly includes the slide bar, the one end of slide bar with unhook subassembly fixed connection, the other end is followed first direction extends and wears to locate with sliding first splint with the second splint, just the slide bar is located be provided with annular protruding on the body of rod between first splint with the second splint, annular bellied both ends through two elastic component elasticity butt respectively in first splint with the second splint, the elastic component is used for annular protruding orientation first splint with provide the buffering when the second splint removes.

Optionally, the elastic piece is configured as a compression spring, the compression spring is sleeved on the sliding rod, and the maximum compression displacement of the compression spring is smaller than the interval of the gap between the second clamping plate and the unhooking component; the length of the rod body, which is far away from one end of the unhooking component and is positioned outside the first clamping plate, of the sliding rod is larger than the maximum compression displacement of the compression spring.

Optionally, rubber gaskets sleeved on the sliding rod are respectively arranged at two ends of the compression spring; and/or a metal gasket sleeved on the sliding rod is further arranged between the rubber gasket and the compression spring.

Optionally, the sliding rod is located the body of rod in the first splint is still formed with protruding muscle, be formed with on the first through-hole of first splint be used for holding protruding muscle and with protruding muscle sliding connection's logical groove.

Optionally, the trailer hook further comprises a displacement sensor, wherein the displacement sensor is used for being in signal connection with a vehicle-mounted control system of the tractor; the displacement sensor is arranged at one end of the second clamping plate, which is close to the unhooking component, and is used for detecting the interval displacement of the gap between the second clamping plate and the unhooking component so as to control the tractor according to the displacement.

Optionally, the unhooking component comprises a unhooking body and a connecting part, wherein the connecting part is used for detachably connecting the unhooking body with the buffer component.

The second aspect of the present disclosure also provides a vehicle, including a trailer hook as described above, the fixing frame of the trailer hook being fixedly connected with the vehicle.

Through above-mentioned technical scheme, this the tow hook that this disclosure provided, this tow hook is through being connected mount and tractor, unhook subassembly and trailer connection, and with the one end and unhook subassembly fixed connection of buffer unit, the other end and mount sliding connection, like this, when the tractor drags the operation in-process to the tractor, the condition such as start-up acceleration or deceleration brake takes place for the tractor, can cause the trailer to produce certain hard impact to the tractor, like this when unhook subassembly receives the effort (hard impact force) of the first direction of being exerted by the trailer, the buffer unit just can produce the damping force to unhook subassembly, and the effort (hard impact force) opposite direction of this damping force and first direction, thereby can realize buffering and reduce the hard impact that the trailer caused to the tractor through this buffer unit, and then reduce the wearing and tearing to tractor and tow hook, improve the life of tractor and tow hook. And moreover, the whole structure of the trailer hook is simpler, the complex manufacturing and assembling processes are effectively simplified, the horizontal space occupancy rate of the trailer hook is smaller, and the space layout of the tail part of the tractor is facilitated.

Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:

FIG. 1 is a schematic structural view of a tow hook provided in an exemplary embodiment of the present disclosure;

FIG. 2 is an exploded schematic view of a tow hook provided in an exemplary embodiment of the present disclosure;

FIG. 3 is a front view of a tow hook provided in an exemplary embodiment of the present disclosure;

FIG. 4 is a top view of a portion of the structure of a tow hook provided in an exemplary embodiment of the present disclosure;

FIG. 5 is a cross-sectional view of the position A-A of FIG. 4;

fig. 6 is a schematic structural view of a slide bar and a first clamping plate according to a second embodiment of the present disclosure.

Description of the reference numerals

1-a fixing frame; 110-a first splint; 111-a first plate body; 1111—a first through hole; 1112-through slots; 112-a second plate; 113-a third plate; 1131-a second via; 120-a second splint; 2-a slide bar; 210-annular protrusion; 220-convex ribs; 3-an elastic member; 4-unhooking assembly; 410-unhooking the body; 411-trailer ball; 412-a trailer ball mount; 4121-fourth plate; 4122-fifth plate; 4123-socket; 420-connection; 421-connecting sleeve; 4211-a first jack; 4212-a second jack; a 5-displacement sensor; 6-gap; 7-a rubber gasket; 8-metal shims; 9-locking mechanism; 910-a locking structure; 911-bolts; 912-nut; 10-a first locking member; 1010-pins; 1020-pins; 11-a second locking member; 12-anti-loose gaskets; 13-latch.

Detailed Description

Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.

In the present disclosure, unless otherwise stated, terms such as "up and down" are used to refer generally to the up and down directions in the space of the trailer hook when in use, and reference may be made to the up and down directions in the drawing of fig. 3. "inner and outer" means inner and outer relative to the contour of the component or structure itself. In addition, it should be noted that terms such as "first, second", etc. are used to distinguish one element from another element without order or importance. In addition, in the description with reference to the drawings, the same reference numerals in different drawings denote the same elements.

According to a first aspect of the present disclosure, there is provided a towing vehicle, as shown with reference to fig. 1 to 5, comprising a mount 1, a unhooking assembly 4 and a cushioning assembly, the mount 1 being for connection with a towing vehicle; the unhooking assembly 4 is used for being connected with a trailer; one end of the buffer component is fixedly connected with the unhooking component 4, and the other end of the buffer component is in sliding connection with the fixing frame 1; when the unhooking assembly 4 is subjected to a first directional force applied by the trailer, the cushioning assembly generates a damping force on the unhooking assembly 4 in a direction opposite to the first direction.

Through above-mentioned technical scheme, namely this disclosure provides a trailer hook, this trailer hook is through being connected mount 1 and tractor, unhook subassembly 4 and trailer connection, and with the one end and unhook subassembly 4 fixed connection of buffer unit, the other end and mount 1 sliding connection, in this way, when the tractor drags the operation in-process to the tractor, the condition such as start-up acceleration or deceleration brake takes place for the tractor, can cause the trailer to produce certain hard impact to the tractor, in this way, when unhook subassembly 4 receives the effort (hard impact force) of the first direction that is exerted by the trailer, the buffer unit just can produce the damping force to unhook subassembly 4, and the effort (hard impact force) opposite direction of this damping force and first direction, thereby can realize buffering and reduce the hard impact that the trailer caused to the tractor through this buffer unit, and then reduce the wearing and tearing to tractor and trailer, improve the life of tractor and trailer hook. And moreover, the whole structure of the trailer hook is simpler, the complex manufacturing and assembling processes are effectively simplified, the horizontal space occupancy rate of the trailer hook is smaller, and the space layout of the tail part of the tractor is facilitated.

Note that the first direction may refer to the left and right directions in the drawing of fig. 3.

In some embodiments, referring to fig. 1 to 5, the fixing frame 1 may include a first clamping plate 110 and a second clamping plate 120 symmetrically arranged along a first direction, first ends of the first clamping plate 110 and the second clamping plate 120 are used to be connected with opposite ends of a rear impact beam of a tractor along the first direction, and second ends of the first clamping plate 110 and the second clamping plate 120 are respectively slidably connected with a buffer assembly, so that the fixing frame is simple in structure and convenient to assemble and disassemble.

The first clamping plate 110 and the second clamping plate 120 may be configured in any suitable manner according to practical application requirements, for example, in some embodiments, referring to fig. 1 to 5, each of the first clamping plate 110 and the second clamping plate 120 may include a first plate body 111, a second plate body 112 and a third plate body 113 that are sequentially connected, the second plate body 112 is obliquely arranged, and a gap between the two first plate bodies 111 is greater than a gap between the two third plate bodies 113, so that the first clamping plate 110 and the second clamping plate 120 are arranged in a sagged S shape, which can reduce an occupancy rate of a horizontal space of the clamping plate, facilitate a spatial layout of a tail portion of a vehicle, and simultaneously, the clamping plate is configured in the S shape, which can also reduce bending force of the clamping plate, and ensure better structural strength of the clamping plate.

In addition, in some embodiments, referring to fig. 1 to 5, the two third plates 113 may be detachably connected to opposite ends of the rear impact beam of the tractor in the first direction through the locking mechanism 9, so that the disassembly is convenient and the stability is high. Wherein the locking mechanism 9 may be configured in any suitable manner, for example, the locking mechanism 9 may include one or more locking structures 910, and when the number of locking structures 910 is configured to be at least three, the at least three locking structures 910 are spaced apart and collectively enclose a polygonal profile, and each locking structure 910 is located at a corresponding corner of the polygonal profile, thereby enabling further improvement in connection stability of the first and second clamp plates 110 and 120 with the rear impact beam of the tractor.

The locking structure 910 may include a bolt 911 and a nut 912, where the two third plate bodies 113 are provided with second through holes 1131, the bolt 911 extends along the horizontal direction and sequentially passes through the second through holes 1131 of the first clamping plate 110 and the second clamping plate 120, the head of the bolt 911 abuts against the end surface of the third plate body 113 of the first clamping plate 110, and one end of the bolt 911 opposite to the head passes through the second through holes 1131 of the second clamping plate 120 and is then connected to the nut 912 by threads, so that the structure is simple and the disassembly and assembly operations are convenient.

In addition, the number of the locking structures 910 is exemplarily shown in fig. 2 to be four and collectively enclose a rectangular profile to enable the first clamping plate 110 and the second clamping plate 120 to be stably connected to the rear impact beam of the tractor, and of course, the number of the locking structures 910 is four to be exemplarily, and a person skilled in the art may adaptively design the locking structures according to actual needs, and the purpose thereof is to be able to ensure that the fixing frame 1 is stably connected to the rear impact beam of the tractor, which is not particularly limited in the present disclosure.

In addition, in some embodiments, referring to fig. 2, the contact portion between the head of the bolt 911 and the first clamping plate 110 and the contact portion between the nut 912 and the second clamping plate 120 may be further provided with a locking washer 12, so that the contact area can be increased, the pressure can be reduced, the nut 912 can be prevented from loosening, and the stability of the connection between the trailer hook and the rear anti-collision beam of the tractor can be further improved.

In some embodiments, referring to fig. 1 to 5, two first plates 111 may be slidably connected with a buffer assembly, where the buffer assembly may include a slide bar 2, one end of the slide bar 2 is fixedly connected with a unhooking component 4, the other end extends along a first direction and slidably passes through the first clamping plate 110 and the second clamping plate 120, an annular protrusion 210 is disposed on a rod body of the slide bar 2 located between the first clamping plate 110 and the second clamping plate 120, two ends of the annular protrusion 210 are respectively elastically abutted to the first clamping plate 110 and the second clamping plate 120 through two elastic members 3, and the elastic members 3 are used for providing buffering when the annular protrusion 210 moves towards the first clamping plate 110 and the second clamping plate 120, so as to realize buffering by the elastic members 3 and reduce hard impact on a tractor, thereby reducing abrasion on the tractor and the tractor, and prolonging service lives of the tractor and the tractor.

The elastic member 3 may be configured in any suitable manner, for example, the elastic member 3 may be configured as a compression spring, where the compression spring is sleeved on the slide rod 2, and the maximum compression displacement of the compression spring is smaller than the interval of the gap 6 between the second clamping plate 120 and the unhooking component 4, so that the second clamping plate 120 can be prevented from hitting the unhooking component 4, and the slide rod 2 is ensured to slide stably. And, the length L of the rod body of the slide rod 2, which is far away from one end of the unhooking component 4 and is positioned outside the first clamping plate 110 ₁ Is larger than the maximum compression displacement of the compression spring, thereby avoiding the slide bar 2 from falling out of the fixing frame 1. Of course, in some embodiments, the length L of the rod body of the slide rod 2 at the end remote from the unhooking assembly 4 and located outside the mount 1 ₁ The maximum compression displacement of the compression spring can be equal, so long as the slide bar 2 is ensured not to deviate from the fixed frame 1. In addition, the compression spring is sleeved on the sliding rod 2, and when the trailer generates hard impact on the tractor, the compression spring is buffered and only bears the compression stress along the axial direction of the sliding rod 2, so that the fatigue stress amplitude of the compression spring can be reduced, and the service life of the compression spring is prolonged.

In some embodiments, referring to fig. 1 to 5, two ends of the compression spring may be respectively provided with rubber gaskets 7 sleeved on the sliding rod 2, so that wear of contact portions can be reduced, and an energy absorption buffer effect can be further achieved through the rubber gaskets 7.

Further, in some embodiments, referring to fig. 1 to 5, a metal gasket 8 sleeved on the sliding rod 2 may be further disposed between the rubber gasket 7 and the compression spring, so that the rubber gasket 7 and the compression spring can be prevented from being directly contacted, and abrasion and deformation of the rubber gasket 7 are further reduced, so as to facilitate improving the service life of the rubber gasket 7.

In some embodiments, referring to fig. 6, a rib 220 is further formed on the rod body of the slide rod 2 located in the first clamping plate 110, a through groove 1112 for accommodating the rib 220 and slidably connecting with the rib 220 is formed on the first through hole 1111 of the first clamping plate 110, specifically, a first through hole 1111 is formed on the first plate body 111 of the first clamping plate 110, the rib 220 is formed on the rod body of the slide rod 2 located in the first through hole 1111, and a through groove 1112 slidably connecting with the rib 220 is formed on the inner wall surface of the first through hole 1111, so that the slide rod 2 can be prevented from rotating along the self axis direction, and the stability is higher. It should be noted that, the extension length of the rib 220 along the axial direction of the rod body is greater than the plate thickness of the first clamping plate 110, for example, in the initial state, the first clamping plate 110 is located in the middle of the rib 220, and when the sliding rod 2 slides along the axial direction, the first clamping plate 110 is not separated from the rib 220, so as to further improve the connection stability.

In some embodiments, referring to fig. 1 to 5, the trailer hook may further include a displacement sensor 5, where the displacement sensor 5 is used for signal connection with a vehicle-mounted control system of the tractor, and the displacement sensor 5 is disposed on an end of the second clamping plate 120 near the unhooking component 4, and is used for detecting a distance displacement amount of the gap 6 between the second clamping plate 120 and the unhooking component 4, so as to control the tractor according to the displacement amount, so that on the basis of providing buffering and reducing hard impact damage by the elastic member 3, the vehicle-mounted control system of the tractor is further signal connected, so that dangerous situations occurring in the tractor can be timely pre-warned and forcedly protected.

The displacement sensor 5 may be configured in any suitable manner, for example, may be a laser displacement sensor, so that accurate detection of the pitch displacement of the gap 6 can be achieved. The manner of fixing the laser displacement sensor to the mount 1 is not particularly limited, and the present disclosure may be, for example, a screw fastener connection or a welded connection, and the purpose of the present disclosure is to enable the laser displacement sensor to be stably connected to the mount 1. Furthermore, the distance L between the laser displacement sensor and the unhooking assembly 4 ₂ Is larger than the maximum compression displacement of the compression spring, so that the laser displacement sensor can be prevented from being crashed into the unhooking component 4, and the laser displacement sensor is ensured to stably slide.

Based on the above embodiments, the present disclosure exemplarily describes a working process of a vehicle-mounted control system of a tractor for early warning and forced protection of dangerous situations occurring to the tractor, which is described in detail as follows,first, for convenience of explanation, the distance L between the laser displacement sensor and the unhooking member 4 detected by the laser displacement sensor is set ₂ The displacement is limited to S, and a first-stage displacement protection limit value and a second-stage displacement protection limit value of the displacement S measured by a laser displacement sensor are arranged in a vehicle-mounted control system, wherein the first-stage displacement protection limit value is the limit displacement of a towing hook when the stress of the towing hook is about to reach the designed limit working condition, and at the moment, a user can be warned to perform proper deceleration or acceleration operation in a vehicle-mounted display screen; the displacement secondary protection limit value refers to the limit displacement amount of the designed abusive working condition when the stress of the trailer hook is about to reach, and at the moment, the vehicle-mounted computer control system can actively control the tractor to correspondingly slow down or accelerate.

Specifically, during operation, the trailer hook is firstly mounted on the rear anti-collision beam of the tractor, and during the operation of towing the tractor, when the tractor is in an accelerating state, the annular protrusion 210 moves towards the second clamping plate 120 and presses the compression spring, and the distance L between the laser displacement sensor and the unhooking assembly 4 is reduced ₂ The displacement S gradually increases, when the displacement S increases to the first-level protection limit value S _1max Time of day _， At the moment, a display screen in the vehicle-mounted control system can warn a user that the tractor overspeed can be properly decelerated; further, when the displacement S increases to the displacement secondary protection limit S _2max When the vehicle-mounted control system forcedly controls the tractor to decelerate so as to restore the displacement S to a safe value or enable the tractor to be in a safe stop state. Conversely, when the tractor is in a decelerating state, the annular protrusion 210 moves toward the first clamping plate 110 and compresses the compression spring, the spacing L between the laser displacement sensor and the unhooking assembly 4 ₂ The displacement S gradually decreases, when the displacement S decreases to the displacement primary protection limit value S _1min Time of day _， At the moment, a display screen in the vehicle-mounted control system can warn a user to increase the speed of the tractor or perform braking operation on the tractor; further, when the displacement S is reduced to the displacement secondary protection limit S _2min When the vehicle-mounted control system forcedly controls the tractor to start braking so as to restore the displacement S to a safe value.

In addition, after the trailer hook is mounted, the distance L between the laser displacement sensor and the unhooking component 4 ₂ The initial displacement is defined as S ₀ When the tractor is in an accelerating state, the displacement S is increased to a first-stage displacement protection limit value S _1max Or a displacement secondary protection limit S _2max At this time, the deformation x of the compression spring is S _1max -S ₀ Or S _2max -S ₀ The impact force born by the trailer hook at the moment can be obtained according to Hooke's law F=kx; conversely, when the tractor is in a decelerating state, the displacement S is reduced to the displacement primary protection limit S _1min Or a displacement secondary protection limit S _2min At this time, the deformation x of the compression spring is S ₀ -S _1min Or S ₀ -S _2min The impact force born by the trailer hook at the moment can be obtained according to hooke's law F=kx, so that the damage to the trailer hook during acceleration or deceleration of the tractor can be accurately calculated, effective safety protection prompt can be conveniently given, and the service life of the trailer hook is prolonged. Wherein, F in the formula f=kx is the impact force born by the trailer hook; k is the elastic coefficient of the compression spring; x is the deformation of the compression spring.

In some embodiments, referring to fig. 1 to 5, the unhooking component 4 may include a unhooking body 410 and a connecting portion 420, where the connecting portion 420 is used to detachably connect the unhooking body 410 to the buffering component, so that the unhooking body 410 can be stably connected to the slide bar 2 through the connecting portion 420, and meanwhile, the connecting portion 420 can be better adapted to the installation requirements of unhooking bodies 410 of different types, and only the specific structure of the connecting portion 420 needs to be adaptively changed, so that the transformation cost is low and the application range is wider.

The connection portion 420 and the unhook body 410 may be configured in any suitable manner, for example, the connection portion 420 may include a connection sleeve 421, the unhook body 410 includes a trailer ball 411 and a trailer ball mounting seat 412, the trailer ball mounting seat 412 includes a fourth plate 4121 and a fifth plate 4122 which are arranged in an angle, the fourth plate 4121 is horizontally arranged and the upper surface is provided with the trailer ball 411, the end of the fifth plate 4122 is provided with a socket 4123, one end of the connection sleeve 421 is internally provided with a first jack 4211 in a plug-in fit with the socket 4123 and the socket 4123 is releasably locked to the connection sleeve 421 by a first locking member 10, the other end of the connection sleeve 421 is internally provided with a second jack 4212 in a plug-in fit with the slide rod 2 and the slide rod 2 is releasably locked to the connection sleeve 421 by a second locking member 11, and the whole structure is simpler and the disassembly is convenient. The first locking member 10 and the second locking member 11 may be configured in any suitable manner, for example, may be configured in such a manner that the pin 1010 and the pin 1020 shown in fig. 2 and 5 are matched to achieve stable connection of the connecting sleeve 421 to the socket 4123 and the slide rod 2, and the plug connection manner of the pin 1010 and the pin 1020 is simple in structure and convenient to assemble and disassemble. Of course, in some embodiments, not shown, the first locking member 10 and the second locking member 11 also achieve stable connection of the connecting sleeve 421 to the socket 4123 and the slide bar 2 by means of a connection such as a bolt and nut fit, which is not specifically limited in the present disclosure.

In addition, as shown in fig. 2, the hitch ball 411 may be stably coupled to the hitch ball mount 412 using, for example, the latch 13, although in some other embodiments, a welded connection may be used, and the disclosure is not limited in detail herein. It should be noted that the above-mentioned structure of the unhooking body 410 including the trailer ball 411 and the trailer ball mount 412 is exemplary, and in some embodiments not shown, the unhooking body 410 may also be configured to be in a latch hook structure and be stably connected to the sliding rod 2 through the connecting sleeve 421 or directly fixedly connected to the sliding rod 2, and such a modification is not particularly limited in this disclosure.

According to a second aspect of the present disclosure, there is further provided a vehicle, including the above-mentioned trailer hook, the fixing frame 1 of the trailer hook is fixedly connected with the vehicle, for example, the fixing frame 1 of the above-mentioned trailer hook is fixedly connected with the rear anti-collision beam of the vehicle, so as to effectively simplify complex manufacturing and assembling processes of the trailer hook of the vehicle, make the occupancy rate of horizontal space of the trailer hook smaller, facilitate the space layout of the tail of the vehicle, and simultaneously buffer and reduce impact damage of hard impact to the vehicle and the trailer hook during the vehicle dragging operation, and have all the beneficial effects of the above-mentioned trailer hook, which are not repeated herein.

The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.

In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations are not described further in this disclosure in order to avoid unnecessary repetition.

Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.

Claims (10)

1. A trailer coupler, comprising:

the fixed mount is used for being connected with the tractor;

a unhooking assembly for connection with a trailer; and

one end of the buffer component is fixedly connected with the unhooking component, and the other end of the buffer component is in sliding connection with the fixing frame;

when the unhooking assembly is subjected to a first directional force applied by the trailer, the cushioning assembly generates a damping force on the unhooking assembly in a direction opposite to the first direction.

2. The trailer coupler of claim 1, wherein the mount comprises first and second cleats symmetrically disposed along the first direction, first ends of the first and second cleats being adapted to connect with opposite ends of a rear bumper beam of the tractor along the first direction, second ends of the first and second cleats being respectively slidably connected with the cushioning assembly.

3. The trailer hook as claimed in claim 2, wherein the first clamping plate and the second clamping plate each comprise a first plate body, a second plate body and a third plate body which are sequentially connected, the second plate bodies are obliquely arranged, and a gap between two first plate bodies is larger than a gap between two third plate bodies;

the two third plate bodies are detachably connected to opposite ends of a rear anti-collision beam of the tractor along the first direction through locking mechanisms;

the two first plate bodies are connected with the buffer assemblies in a sliding manner.

4. The trailer hook as claimed in claim 2, wherein the buffer assembly comprises a slide bar, one end of the slide bar is fixedly connected with the unhooking assembly, the other end of the slide bar extends along the first direction and slidably penetrates through the first clamping plate and the second clamping plate, an annular protrusion is arranged on a rod body of the slide bar between the first clamping plate and the second clamping plate, two ends of the annular protrusion are respectively elastically abutted to the first clamping plate and the second clamping plate through two elastic members, and the elastic members are used for providing buffer when the annular protrusion moves towards the first clamping plate and the second clamping plate.

5. The trailer hook as claimed in claim 4, wherein the resilient member is configured as a compression spring, the compression spring being sleeved on the slide bar and having a maximum compression displacement less than a gap between the second clamp plate and the unhooking assembly;

the length of the rod body, which is far away from one end of the unhooking component and is positioned outside the first clamping plate, of the sliding rod is larger than the maximum compression displacement of the compression spring.

6. The trailer hook according to claim 5, wherein two ends of the compression spring are respectively provided with a rubber gasket sleeved on the sliding rod;

and/or a metal gasket sleeved on the sliding rod is further arranged between the rubber gasket and the compression spring.

7. The trailer hook as claimed in claim 4, wherein the slide bar is further formed with a rib on the bar body located in the first clamping plate, and a through slot for receiving the rib and slidably connecting with the rib is formed in the first through hole of the first clamping plate.

8. The trailer hook of claim 2, further comprising a displacement sensor for signal connection with an on-board control system of the tractor;

the displacement sensor is arranged at one end of the second clamping plate, which is close to the unhooking component, and is used for detecting the interval displacement of the gap between the second clamping plate and the unhooking component so as to control the tractor according to the displacement.

9. The tow hook of claim 1, wherein the unhooking assembly includes a unhooking body and a connection for detachably connecting the unhooking body to the cushioning assembly.

10. A vehicle comprising a towing hook according to any one of claims 1-9, the towing hook's mount being fixedly connected to the vehicle.

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