阅读说明：本技术 一种汽车用拖钩 (Towing hook for automobile ) 是由 张国辉 徐振强 徐瑗徽 于 2019-10-25 设计创作，主要内容包括：本发明公开了一种汽车用拖钩,包括一端连接牵引车上的第一安装装置、用于牵引车与故障车前后减震的第一减震装置、用于牵引车与故障车转弯减震的第二减震装置、另一端连接故障车上的第二安装装置。本发明不仅方便了拖钩的拆卸,也方便了拖钩的安装。(The invention discloses an automobile towing hook which comprises a first mounting device, a first damping device, a second damping device and a second mounting device, wherein one end of the first mounting device is connected with the towing vehicle, the first damping device is used for damping the front and the rear of the towing vehicle and a fault vehicle, the second damping device is used for damping the turning of the towing vehicle and the fault vehicle, and the second mounting device is connected with the fault vehicle. The invention not only facilitates the disassembly of the towing hook, but also facilitates the installation of the towing hook.)

1. The utility model provides a tow hook for car which characterized in that: including one end connect first installation device (1) on the tractor, be used for the tractor with by the first damping device (2) of tractor front and back absorbing, be used for the tractor with by the second damping device (3) of tractor turn absorbing, the other end is connected by second installation device (4) on the tractor, first installation device (1) including fixed block (10) on the fixed tractor, locate arc spout (11) on the mounting, be located first support (12) in the spout, locate first elasticity in the spout and push away piece (13) and push away piece (14) with second elasticity that first elasticity pushed away a symmetry and set up, mobile jib (15) on first support are located respectively at both ends, two fixed subassembly (16) on first support are located to the symmetry.

2. The tow hook for automobiles according to claim 1, wherein: the middle of the main rod (15) is provided with a spherical convex block (151), and the two ends of the main rod are respectively fixedly arranged on the two fixed components.

3. The tow hook for automobiles according to claim 1, wherein: fixed subassembly (16) include base (160), locate pressure spring (161) of base bottom, be located the first telescopic link (162) of locating on the base in the middle of the pressure spring, locate second telescopic link (163) on the base lateral wall, fixed mounting (164) of locating the mobile jib both ends, locate draw-in groove (165) on the base, rotate and locate rotatory fastener (166) on the mounting, first telescopic link and second telescopic link cavity intercommunication.

4. The tow hook for automobiles according to claim 1, wherein: the first damping device (2) comprises a connecting piece (20) which is positioned in the middle of the main rod and sleeved on the main rod, two groups of connecting rod groups (21) which are symmetrically arranged on the connecting piece and are arranged in an equidistant parallelogram mode, four connecting shafts (22) used for connecting the two groups of connecting rod groups, four rotating shafts (23) which are respectively rotatably arranged on the two groups of connecting rod groups, two first elastic pieces (24) and two second elastic pieces (25) which are respectively arranged on two adjacent rotating shafts.

5. The tow hook for automobiles according to claim 1, wherein: second damping device (3) include second support (30) and third support (31), on the fixed pivot of one end (23) other end remove locate two carriage release levers (32) on the second support, one end is fixed on the connecting axle the other end and is fixed third elastic component (33) on the second support, a rotating assembly (34) that is used for second support and third support rotation to connect, one end is rotated and is located on the second support other end and is rotated first gas pole (35) and second gas pole (36) of locating on the third support, the first wave pipe (37) of cover in the first gas pole outside, the second wave pipe (38) of cover in the second gas pole outside.

6. The tow hook for the automobile according to claim 5, wherein: the rotating assembly (34) comprises a rotating disc (340) positioned between the second support and the third support, a first sliding rail (341) and a second sliding rail (342) which are arranged on the rotating disc, a first sliding block (343) with one end fixed on the second support and the other end positioned on the first sliding rail, and a second sliding block (344) with one end fixed on the third support and the other end positioned on the second sliding rail.

7. The tow hook for automobiles according to claim 1, wherein: the second mounting device (4) comprises a fixing seat (40) on a fixed third support, a connecting seat (41) used for being connected with a towed vehicle, a first gear (42) rotatably arranged on the fixing seat, a second gear (43) and a third gear (44) rotatably arranged on the fixing seat in a meshed manner with the first gear, a connecting rod (45) with one end fixedly arranged on the first gear and the other end rotatably arranged on the connecting seat, a third air rod (46) with one end rotatably arranged on the second gear and the other end rotatably arranged on the connecting seat, and a fourth air rod (47) with one end rotatably arranged on the third gear and the other end rotatably arranged on the connecting seat.

Technical Field

The invention relates to the technical field of towing hooks, in particular to a towing hook for an automobile.

Background

The towing hook for the automobile is mainly and safely arranged on common household vehicles and self-propelled caravans. The installation trailer hook can pull trailer car, pull trailer car as a house, certainly can also arrange and install some back formula bicycle frames, suitcase etc. in pairs, has increased the year thing space of vehicle, lets the people who likes self-driving travel utilize the holiday to drive and take family members, friend and luggage, goes to the nature in the wild

The pleasure of dining and sleeping is how much.

However, the existing trailer hook is fixedly installed on the body through screws, when the trailer hook is not needed, a vehicle owner cannot independently detach the trailer hook, and meanwhile, the trailer hook exposed outside the vehicle body causes troubles to the vehicle owner and a rear vehicle when the locomotive runs, for example, unnecessary disputes are easily caused by the trailer hook when rear-end accidents occur.

Disclosure of Invention

The invention provides a towing hook for an automobile, aiming at overcoming the defects of the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme: a towing hook for an automobile comprises a first mounting device, a first damping device, a second damping device and a second mounting device, wherein one end of the first mounting device is connected with a towing vehicle, the first damping device is used for damping the front and the back of the towing vehicle and a towed vehicle, the second damping device is used for damping the turning of the towing vehicle and the towed vehicle, the other end of the second mounting device is connected with the towed vehicle, the first mounting device comprises a fixed block on the fixed towing vehicle, an arc-shaped chute arranged on a fixed piece, a first support arranged in the chute, a first elastic pushing piece arranged in the chute, a second elastic pushing piece symmetrically arranged with the first elastic pushing piece, a main rod with two ends respectively arranged on the first support, and two fixed components symmetrically; the fixed block is fixed on the tractor, first support is located the arc spout, first elasticity pushes away the piece and pushes away the outside promotion of piece with second elasticity, first support can remove in the arc spout, first elasticity pushes away the piece and contacts with second elasticity, first support horizontal fixation or first support is fixed down, first support horizontal fixation back, two fixed subassemblies are fixed the mobile jib on first support, the installation work with the tractor is accomplished to the tow hook, under the circumstances of need not the tow hook, first support is fixed down. The invention can lead the first bracket to move in the arc chute by pushing outwards through the first elastic pushing piece and the second elastic pushing piece, the first bracket moves to the topmost end, namely the first bracket is horizontal, the first elastic pushing piece and the second elastic pushing piece are reset, so that the first bracket can not move in the arc-shaped groove, the horizontal fixation of the first bracket is completed, under the condition of no towing hook, the first elastic pushing piece and the second elastic pushing piece push outwards to make the first bracket move to the lowest end, the first support is downward, the first elastic pushing piece and the second elastic pushing piece are reset, so that the first support cannot move in the arc-shaped groove, downward fixation of the first support is completed, major accidents caused by rear-end collision with other vehicles due to the first support are avoided, and the main rod is connected and fixed with the first support through the two fixing assemblies, so that the towing hook is convenient to detach and mount; first damping device in the traction process makes the effect of buffering around being played by the tractor, and second damping device makes the tractor and can turn by the tractor, and turns the in-process and plays the cushioning effect, makes the whole stress dispersion that receives of towing pintle, improves the life of towing pintle.

The middle of the main rod is provided with a spherical convex block, and two ends of the main rod are respectively fixedly arranged on the two fixing components; the convex block is matched with the connecting piece for use, so that the contact area between the main rod and the connecting piece can be increased, the abrasion between the main rod and the connecting piece can be reduced, the friction force can be reduced by the spherical convex block, the main rod and the connection can be matched more tightly, and the abrasion is prevented from being increased due to the movement between the connecting piece and the main rod; make the mobile jib can be quick fix on first support through two fixed subassemblies, and fixed firm reliable.

The fixing assembly comprises a base, a pressure spring arranged at the bottom of the base, a first telescopic rod arranged on the base in the middle of the pressure spring, a second telescopic rod arranged on the side wall of the base, fixing pieces fixedly arranged at two ends of a main rod, clamping grooves arranged on the base and rotary clamping pieces rotatably arranged on the fixing pieces, and cavities of the first telescopic rod and the second telescopic rod are communicated; the mounting is fixed at the both ends of mobile jib, and mobile jib and mounting are put simultaneously in the base, and first telescopic link of mounting extrusion and pressure spring, first telescopic link and second telescopic link cavity intercommunication, in the air extrusion entering second telescopic link in the first telescopic link, the second telescopic link extension is fixed the mounting lateral wall, rotates rotatory fastener, and in rotatory fastener card income draw-in groove, the fixed of mobile jib and first support was accomplished. The fixing piece is extruded towards the bottom of the base, so that the first telescopic rod and the pressure spring are compressed, air in the second telescopic rod enters the second telescopic rod, the second telescopic rod is extended, the side wall of the fixing piece is clamped and fixed, the main rod is tensioned in the traction process, the fixing piece is enabled to extrude the first telescopic rod, the second telescopic rod is extended longer, and the fixing piece is fixed more firmly; through rotating the rotary clamping piece, the rotary clamping piece is clamped into the clamping groove, and the fixing is convenient and fast.

The first damping device comprises a connecting piece which is positioned in the middle of the main rod and sleeved on the main rod, two groups of connecting rod groups which are symmetrically arranged on the connecting piece and are arranged in an equidistant parallelogram, four connecting shafts for connecting the two groups of connecting rod groups, four rotating shafts which are respectively rotatably arranged on the two groups of connecting rod groups, two first elastic pieces and two second elastic pieces which are respectively arranged on two adjacent rotating shafts; four connecting shafts connecting two groups of connecting rod groups, two groups of connecting rods arranged in a parallelogram shape in the traction process change angles continuously, the distance between two adjacent rotating shafts changes continuously, and the distance between the four rotating shafts is buffered by the first elastic piece and the second elastic piece. Through four connecting axles, make two sets of connections do the group and can link together, the two sets of connections that are the parallelogram setting among the traction process do the group and constantly change the angle, make the distance between two adjacent pivots change, cushion two adjacent pivots through first elastic component and second elastic component to play the cushioning effect around the towing hook is whole.

The second damping device comprises a second support and a third support, two moving rods, a third elastic part, a rotating assembly, a first air rod, a second air rod, a first wave pipe and a second wave pipe, wherein one end of each moving rod is fixed on the rotating shaft, the other end of each moving rod is movably arranged on the second support, one end of each third elastic part is fixed on the connecting shaft, the other end of each third elastic part is fixed on the second support, one end of each rotating assembly is used for rotatably connecting the second support and the third support, one end of each first air rod and one end of each second air rod are rotatably arranged on the second support, the other end of each first air rod and the other end of each; the rotating assembly enables the second support and the third support to rotate for a certain angle by taking the rotating assembly as an axis, the first air rod and the second air rod are lengthened or shortened in the rotating process, the force arm is increased, the second support and the third support play a role in buffering, and the first support and the second support are rotated again through the arranged first wave pipe and the second wave pipe to play a role in buffering, so that the buffering effect is better; the distance between the two rotating shafts is changed, so that the distance between the two moving rods is changed, and meanwhile, the third elastic piece buffers the first damping device and the second damping device.

The rotating assembly comprises a rotary table positioned between the second support and the third support, a first sliding rail and a second sliding rail which are arranged on the rotary table, a first sliding block with one end fixed on the second support and the other end positioned on the first sliding rail, and a second sliding block with one end fixed on the third support and the other end positioned on the second sliding rail; through first slider, make the second support can follow first slide rail and remove on the carousel, through the second slider, make the third support can follow the second slide rail and remove on the carousel, make between two supports and the third support rotatory more stable, improve the holistic life of towing pintle.

The second mounting device comprises a fixed seat fixed on the third support, a connecting seat used for connecting a towed vehicle, a first gear rotationally arranged on the fixed seat, a second gear and a third gear which are meshed with the first gear and rotationally arranged on the fixed seat, a connecting rod with one end fixedly arranged on the first gear and the other end rotationally arranged on the connecting seat, a third air rod with one end rotationally arranged on the second gear and the other end rotationally arranged on the connecting seat, and a fourth air rod with one end rotationally arranged on the third gear and the other end rotationally arranged on the connecting seat; the first gear is meshed with the second gear and the third gear respectively, so that the abrasion of a contact position is reduced, the rotary joint of the third air rod and the second gear is deviated from the axis of the second gear, the force arm is increased, the third air rod is difficult to elongate or compress, the rotary joint of the fourth air rod and the third gear is deviated from the axis of the third gear, the force arm is increased, the fourth air rod is difficult to elongate or compress and is made to rotate on the first gear slightly under the action of traction force, and the phenomenon that the joint of the fixed seat and the connecting seat is stressed and concentrated to deform, namely, the fixed seat and the connecting seat are finally broken and failed is avoided.

The invention has the following advantages: the towing hook is convenient to disassemble and install; first damping device in the traction process makes the effect of buffering around being played by the tractor, and second damping device makes the tractor and can turn by the tractor, and turns the in-process and plays the cushioning effect, makes the whole stress dispersion that receives of towing pintle, improves the life of towing pintle.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the first damper device and the second damper device.

Fig. 3 is a cross-sectional view of the fixing member.

Fig. 4 is a partial schematic view of a first mounting device.

Fig. 5 is a schematic partial cross-sectional view of a first mounting device.

Fig. 6 is a schematic structural view of the fixing member.

Fig. 7 is an enlarged view of a portion a in fig. 6.

Fig. 8 is a schematic cross-sectional view of a second damping device.

Fig. 9 is a partial structural view of the second damper.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-9, a towing hook for an automobile comprises a first mounting device 1 with one end connected to a towing vehicle, a first damping device 2 for damping front and back of the towing vehicle and a towed vehicle, a second damping device 3 for damping turning of the towing vehicle and the towed vehicle, and a second mounting device 4 with the other end connected to the towed vehicle, wherein the first mounting device 1 comprises a fixed block 10 for fixing the towing vehicle, an arc-shaped chute 11 arranged on the fixed block, a first bracket 12 positioned in the chute, a first elastic pushing piece 13 arranged in the chute, a second elastic pushing piece 14 symmetrically arranged with the first elastic pushing piece, a main rod 15 with two ends respectively arranged on the first bracket, and two fixed assemblies 16 symmetrically arranged on the first bracket; the fixed block is fixed on the tractor, first support is located the arc spout, first elasticity pushes away the piece and pushes away the outside promotion of piece with second elasticity, first support can remove in the arc spout, first elasticity pushes away the piece and contacts with second elasticity, first support horizontal fixation or first support is fixed down, first support horizontal fixation back, two fixed subassemblies are fixed the mobile jib on first support, the installation work with the tractor is accomplished to the tow hook, under the circumstances of need not the tow hook, first support is fixed down.

The middle of the main rod 15 is provided with a spherical convex block 151, and two ends of the main rod are respectively fixedly arranged on the two fixing components; the convex block is matched with the connecting piece for use, so that the contact area between the main rod and the connecting piece can be increased, the abrasion between the main rod and the connecting piece can be reduced, the friction force can be reduced by the spherical convex block, the main rod and the connection can be matched more tightly, and the abrasion is prevented from being increased due to the movement between the connecting piece and the main rod; make the mobile jib can be quick fix on first support through two fixed subassemblies, and fixed firm reliable.

The fixing assembly 16 comprises a base 160, a pressure spring 161 arranged at the bottom of the base, a first telescopic rod 162 arranged on the base in the middle of the pressure spring, a second telescopic rod 163 arranged on the side wall of the base, fixing pieces 164 fixedly arranged at two ends of a main rod, a clamping groove 165 arranged on the base and a rotating clamping piece 166 rotatably arranged on the fixing pieces, and the chambers of the first telescopic rod and the second telescopic rod are communicated; the mounting is fixed at the both ends of mobile jib, and mobile jib and mounting are put simultaneously in the base, and first telescopic link of mounting extrusion and pressure spring, first telescopic link and second telescopic link cavity intercommunication, in the air extrusion entering second telescopic link in the first telescopic link, the second telescopic link extension is fixed the mounting lateral wall, rotates rotatory fastener, and in rotatory fastener card income draw-in groove, the fixed of mobile jib and first support was accomplished. The fixing piece is extruded towards the bottom of the base, so that the first telescopic rod and the pressure spring are compressed, air in the second telescopic rod enters the second telescopic rod, the second telescopic rod is extended, the side wall of the fixing piece is clamped and fixed, the main rod is tensioned in the traction process, the fixing piece is enabled to extrude the first telescopic rod, the second telescopic rod is extended longer, and the fixing piece is fixed more firmly; through rotating the rotary clamping piece, the rotary clamping piece is clamped into the clamping groove, and the fixing is convenient and fast.

The first damping device 2 comprises a connecting piece 20 which is positioned in the middle of the main rod and sleeved on the main rod, two groups of connecting rod groups 21 which are symmetrically arranged on the connecting piece and are arranged in an equidistant parallelogram shape, four connecting shafts 22 for connecting the two groups of connecting rod groups, four rotating shafts 23 which are respectively rotatably arranged on the two groups of connecting rod groups, two first elastic pieces 24 and two second elastic pieces 25 which are respectively arranged on two adjacent rotating shafts; four connecting shafts connecting two groups of connecting rod groups, two groups of connecting rods arranged in a parallelogram shape in the traction process change angles continuously, the distance between two adjacent rotating shafts changes continuously, and the distance between the four rotating shafts is buffered by the first elastic piece and the second elastic piece.

The second damping device 3 comprises a second bracket 30 and a third bracket 31, two moving rods 32 with one end fixed on the rotating shaft 23 and the other end movably arranged on the second bracket, a third elastic part 33 with one end fixed on the connecting shaft and the other end fixed on the second bracket, a rotating assembly 34 for rotationally connecting the second bracket and the third bracket, a first air rod 35 and a second air rod 36 with one end rotationally arranged on the second bracket and the other end rotationally arranged on the third bracket, a first wave pipe 37 sleeved outside the first air rod, and a second wave pipe 38 sleeved outside the second air rod; the rotating assembly enables the second support and the third support to rotate for a certain angle by taking the rotating assembly as an axis, the first air rod and the second air rod are lengthened or shortened in the rotating process, the force arm is increased, the second support and the third support play a role in buffering, and the first support and the second support are rotated again through the arranged first wave pipe and the second wave pipe to play a role in buffering, so that the buffering effect is better; the distance between the two rotating shafts is changed, so that the distance between the two moving rods is changed, and meanwhile, the third elastic piece buffers the first damping device and the second damping device.

The rotating assembly 34 comprises a rotating disc 340 positioned between the second bracket and the third bracket, a first sliding rail 341 and a second sliding rail 342 which are arranged on the rotating disc, a first sliding block 343 with one end fixed on the second bracket and the other end positioned on the first sliding rail, and a second sliding block 344 with one end fixed on the third bracket and the other end positioned on the second sliding rail; through first slider, make the second support can follow first slide rail and remove on the carousel, through the second slider, make the third support can follow the second slide rail and remove on the carousel, make between two supports and the third support rotatory more stable, improve the holistic life of towing pintle.

The second mounting device 4 comprises a fixed seat 40 fixed on the third bracket, a connecting seat 41 used for connecting and being pulled, a first gear 42 rotationally arranged on the fixed seat, a second gear 43 and a third gear 44 rotationally arranged on the fixed seat in a meshing manner with the first gear, a connecting rod 45 with one end fixedly arranged on the first gear and the other end rotationally arranged on the connecting seat, a third air rod 46 with one end rotationally arranged on the second gear and the other end rotationally arranged on the connecting seat, and a fourth air rod 47 with one end rotationally arranged on the third gear and the other end rotationally arranged on the connecting seat; the first gear is meshed with the second gear and the third gear respectively, so that the abrasion of a contact position is reduced, the rotary joint of the third air rod and the second gear is deviated from the axis of the second gear, the force arm is increased, the third air rod is difficult to elongate or compress, the rotary joint of the fourth air rod and the third gear is deviated from the axis of the third gear, the force arm is increased, the fourth air rod is difficult to elongate or compress and is made to rotate on the first gear slightly under the action of traction force, and the phenomenon that the joint of the fixed seat and the connecting seat is stressed and concentrated to deform, namely, the fixed seat and the connecting seat are finally broken and failed is avoided.