CN202345319U

CN202345319U - Telescopic vehicle towing hook

Info

Publication number: CN202345319U
Application number: CN2011204233854U
Authority: CN
Inventors: 申力伟; 孙坤峰; 张寿琛; 李同军; 徐辰强; 信文荣; 郎平
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2011-10-31
Filing date: 2011-10-31
Publication date: 2012-07-25
Anticipated expiration: 2021-10-31

Abstract

The utility model relates to a structure of a vehicle towing hook, in particular to a telescopic vehicle towing hook. The telescopic vehicle towing hook is arranged on a vehicle body in a matching manner and comprises a vehicle towing hook (1) with a hook-shaped part, a buffer device and a limiting device. With the adoption of the technical scheme, the telescopic vehicle towing hook has the beneficial effects that when the vehicle towing hook moves towards the direction opposite to the driving direction of a vehicle under the action of external force through the buffer device, the elastic force opposite to the moving direction is provided for the vehicle towing hook, so that when not in use, the vehicle towing hook can be jacked into the inside of a bumper container through additionally arranging a buckling plate buckled with a hole arranged in a bumper for the vehicle towing hook to penetrate through on the bumper, therefore the overall aesthetic property is improved, and when in use, the vehicle towing hook can be ejected out of the bumper only through disassembling the buckling plate; due to the action of the limiting device, the vehicle towing hook is relatively fixed with the vehicle body to realize the vehicle towing effect; and when the vehicle towing hook is collided with the vehicle body, the harm of the vehicle towing hook to the human body is reduced due to the action of the buffer device.

Description

Telescoping vehicle towing hook

Technical field

The utility model relates to a kind of structure of vehicle cart hook, specifically relates to a kind of telescoping vehicle towing hook.

Background technology

Existing car puller hook structure is employed in car body (on the longeron like the vehicle bottom) more and goes up hook formation of making, and it has influenced the attractive in appearance of car load; The towing hook that adopts Collapsible structure is also arranged; It is drawn out to car puller hook outside the car when needs use, then with locating dowel pin with positioning between car puller hook and the car body, realize the relative fixed between car puller hook and the car body; Its complex operation; And when collision happens, the distortion of the car puller hook of above-mentioned two kinds of structures is serious, can not keep in repair and reuse.China utility model patent CN200992120Y discloses a kind of telescopic car puller hook, comprises casing, slide shaft and limiting device, and the casing internal fixation has positioning plate and guide plate; The slide shaft activity is contained in the casing, and an end of slide shaft is connected with the stage clip on being fixed on after panel box, and the end near stage clip on the slide shaft is equipped with bearing pin; The other end of slide shaft is provided with dog hole; Movable limiting device is housed in the casing, and the employing of its structure has guaranteed the completion property of vehicle appearance; Solved that conventional trailer hook slide shaft in use rotates and the problem that can't locate, but its damage that car puller hook is caused when can not actv. solving vehicle collision.

Summary of the invention

Be to solve the deficiency that exists in the prior art, the utility model provides a kind of to be reduced collision car puller hook is caused the telescoping vehicle towing hook of damage, when guaranteeing the vehicle overall appearance, easy to use.

For realizing above-mentioned purpose; The telescoping vehicle towing hook of the utility model; Be equipped with on car body, comprise the car puller hook that has crook, cooperate the shock absorber that links to each other with car body; When it received external force and have the motion opposite with vehicle heading at car puller hook, described shock absorber was that car puller hook provides the elastic force opposite with this sense of motion;

Inhibiting device, it cooperates with car body and links to each other, and when car puller hook received the application force along the vehicle direct of travel, described inhibiting device limited the relative car body of car puller hook moving along the vehicle direct of travel.

As qualification to aforesaid way; Described shock absorber comprises the sleeve that is connected with car body, the back-up ring that is connected with the rigidly connected pipe link of car puller hook, with pipe link; In sleeve, be provided with the one-level spring; Receive external force and when having the motion opposite with vehicle heading, described pipe link drives back-up ring and in sleeve, slides at car puller hook, and the one-level spring is applied thrust through back-up ring.

As improvement to aforesaid way, in sleeve, with the one-level spring altogether line of centers be provided with the two-level spring that the tail end with sleeve is connected, the length of described two-level spring is less than the one-level spring.

As improvement, be provided with the pilot bar that cooperates with the pipe link plug-in mounting that connects back-up ring at the sleeve internal fixation to aforesaid way.

As qualification to aforesaid way, the line of centers setting altogether of described pilot bar and one-level spring.

As qualification to the utility model; Described inhibiting device comprise the limiting bracket that is connected with car body, with the rigidly connected swivel nut of car puller hook; When car puller hook receives the application force along the vehicle direct of travel, described limiting bracket through with contact matching restriction car puller hook the moving of swivel nut along the vehicle direct of travel.

As the qualification to the utility model, described car body is the longeron of vehicle frame.

Adopt technique scheme,, make car puller hook receive external force and when having the motion opposite with vehicle heading through shock absorber; For car puller hook provides the elastic force opposite with this sense of motion, like this, when not using car puller hook; Can through set up on the bumper/spoiler one with bumper/spoiler on the hole passed of the confession car puller hook that the is provided with buckle that carries out spiral-lock car puller hook is headed into the inside that bumper/spoiler contains, improve integral aesthetic property, and when using car puller hook; Only need buckle is deducted, car puller hook can eject under the effect of shock absorber outside the bumper/spoiler, at this moment; Because the effect of inhibiting device makes car puller hook and car body relative fixed, realize the trailer effect; In addition, when bumping, because the effect of this shock absorber has reduced the injury of car puller hook to human body, its integral structure is simple.

Description of drawings

Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further to specify:

Fig. 1 is the utility model telescoping vehicle towing hook integral structure scheme drawing.

Among the figure: the 1-car puller hook; The 2-limiting bracket; The 3-swivel nut; The 4-pipe link; The 5-back-up ring; 6-one-level spring; The 7-two-level spring; The 8-pilot bar; The 9-sleeve; The 10-longeron.

The specific embodiment

The telescoping vehicle towing hook of the utility model; Comprise car puller hook 1 that has crook and shock absorber and the inhibiting device that matches with car puller hook 1; Shock absorber cooperates with car body and links to each other; When car puller hook 1 receives external force and has the motion opposite with vehicle heading, for car puller hook 1 provides the elastic force opposite with this sense of motion; Inhibiting device and car body cooperate and link to each other, and when car puller hook 1 received the application force along the vehicle direct of travel, described inhibiting device limited car puller hook 1 relative car body moving along the vehicle direct of travel.

As shown in Figure 1, in the present embodiment, car puller hook 1 front end has crook, and the rear end is the thread rod that links to each other with crook; Shock absorber comprises sleeve 9, pilot bar 8, one-level spring 6, two-level spring 7, pipe link 4 and the back-up ring 5 that is fixed on the car body longeron; Wherein, Sleeve 9 is columnar structured for the tail end osed top that fixing welding is arranged on the longeron 10, and the tail end face bonding of sleeve 9 is connected to this sleeve 9 and is total to the pilot bar 8 that line of centers is provided with, and one-level spring 6 is sleeved on the pilot bar 8; The central lines of its line of centers and pilot bar 8, and terminal being fixed on the tail end plane of sleeve 9; Two-level spring 7 length are less than one-level spring 6, and itself and one-level spring 6 are total to the line of centers settings, and terminal being fixed on equally on the tail end plane of sleeve 9; Pipe link 4 is cylindrical, and its front end is for being provided with externally threaded preceding coupling end, and rear end bottom center is provided with the counterbore that can cooperate with pilot bar 8 plug-in mountings, and back-up ring 5 is welded on the end plane of pipe link 4, is provided with the corresponding through hole of counterbore of pipe link 4 therewith.

Pipe link 4 is inserted on the pilot bar 8; Back-up ring 5 is rigidly connected pipe link 4 and car puller hook 1 with after one-level spring 6 contacts, and receives the effect of external force and when having the motion opposite with vehicle heading at car puller hook 1; Pipe link 4 drives back-up ring 5 one-level spring 6 is compressed under the effect of this external force; One-level spring 6 produces the elastic force opposite with this sense of motion, and when the external force that receives when car puller hook 1 was excessive, the elastic force that one-level spring 6 produces was not enough to this external force counteracting; Back-up ring 5 can continue motion until contact with two-level spring 7, and receives two-level spring 7 and work in coordination with the reverse elasticity power that provide.

The inhibiting device of present embodiment comprises limiting bracket 2 and swivel nut 3; Limiting bracket 2 is welded on the longeron 10; Its one is provided with the circular hole that the thread rod that can supply car puller hook 1 passes with pipe link 4 perpendicular planes; Swivel nut 3 is the cylindrical structural of external diameter greater than the circular hole of limiting bracket 2, is respectively equipped with preceding thread hole of matching with the thread rod of car puller hook 1 and the rear thread hole of matching with the preceding coupling end of pipe link 4 on its two cylinder end faces; After the thread rod of car puller hook 1 passes the circular hole of limiting bracket 2; Cooperate with the preceding thread hole of swivel nut 3 again and screw; Can realize captiveing joint of swivel nut 3 and car puller hook 1; Again coupling ends before the rear thread hole of swivel nut 3 and the pipe link 4 are cooperated and screw, can realize captiveing joint of swivel nut 3 and pipe link 4, and then the captiveing joint of realization pipe link 4 and car puller hook 1.When car puller hook 1 received the pulling force along the vehicle direct of travel, its drove swivel nut 3 and travels forward, and stopping of 2 pairs of swivel nuts 3 of limiting bracket can limit this motion.

Claims

1. a telescoping vehicle towing hook is equipped with on car body, comprises the car puller hook (1) that has crook, it is characterized in that:

Shock absorber cooperates with car body to link to each other, and receives external force and when having the motion opposite with vehicle heading, described shock absorber is that car puller hook (1) provides the elastic force opposite with this sense of motion at car puller hook (1);

Inhibiting device, it cooperates with car body and links to each other, when car puller hook (1) receives the application force along the vehicle direct of travel, relative car body the moving of described inhibiting device restriction car puller hook (1) along the vehicle direct of travel.

2. telescoping vehicle towing hook according to claim 1; It is characterized in that: described shock absorber comprises the sleeve (9) that is connected with car body, the back-up ring (5) that is connected with the rigidly connected pipe link of car puller hook (1) (4), with pipe link (4); In sleeve (9), be provided with one-level spring (6); When car puller hook (1) receives external force and has the motion opposite with vehicle heading; Described pipe link (4) drives back-up ring (5) and in sleeve (9), slides, and through back-up ring (5) one-level spring (6) is applied thrust.

3. telescoping vehicle towing hook according to claim 2; It is characterized in that: in sleeve (9), with one-level spring (6) altogether line of centers being provided with the two-level spring (7) that the tail end with sleeve (9) is connected, the length of described two-level spring (7) is less than the one-level spring.

4. according to claim 2 or 3 described telescoping vehicle towing hooks, it is characterized in that: be provided with the pilot bar (8) that cooperates with pipe link (4) plug-in mounting that connects back-up ring (5) at sleeve (9) internal fixation.

5. telescoping vehicle towing hook according to claim 4 is characterized in that: described pilot bar (8) and one-level spring (6) line of centers setting altogether.

6. telescoping vehicle towing hook according to claim 1; It is characterized in that: described inhibiting device comprise the limiting bracket (2) that is connected with car body, with the rigidly connected swivel nut of car puller hook (1) (3); When car puller hook (1) receives the application force along the vehicle direct of travel, described limiting bracket (2) through with contact matching restriction car puller hook (1) the moving of swivel nut (3) along the vehicle direct of travel.

7. telescoping vehicle towing hook according to claim 1 is characterized in that: described car body is the longeron (10) of vehicle frame.