CN201856594U

CN201856594U - Control arm bushing

Info

Publication number: CN201856594U
Application number: CN2010202938381U
Authority: CN
Inventors: 董懿德
Original assignee: SAIC Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2010-08-11
Filing date: 2010-08-11
Publication date: 2011-06-08
Anticipated expiration: 2020-08-11

Abstract

The utility model relates to the technology of automobile shock absorption, in particular to a control arm bushing. The bushing comprises an inner tube and an elastic tube with consistent sizes, and is characterized in that the inner tube and the elastic tube are independently formed, the elastic tube is sleeved on the body of the inner tube, the sleeve joint surface of the inner tube and the elastic tube is provided with a limit structure which limits the axial sliding of the sleeve joint surface. The whole bushing is directly pressed into a connecting hole on the control arm, the inner tube and the control arm are respectively connected with an automobile body and a wheel bracket, the elastic tube plays a role of vibration isolation and shock absorption, and because the elastic tube and the inner tube are firstly respectively processed and then sleeved together, the elastic tube can coaxially rotate along the inner tube when the control arm is twisted so as to avoid shearing and damaging the elastic tube, and the service life of the bushing is obviously prolonged. The limit structure can prevent the relative axial sliding of the inner tube and the elastic tube, and the axial fixation of the bushing is as reliable as that of the existing bushing.

Description

The Control arm lining

Technical field

The utility model relates to the automobile shock technology, specifically is exactly a kind of Control arm lining.

Background technology

As shown in Figure 1, existing Control arm lining is generally by metal inner pipe 1 and metal

outer pipe

2, and 3 formations of India rubber tube between the two, and the three is sulfided into one and axial line overlaps.Such lining integral body is pressed into the Control arm body, connecting bore interference fit on outer tube 2 and the Control arm is integrated lining and Control arm bulk junction, Control arm is connected with wheel stand with car body respectively with interior pipe, during vehicle ', India rubber tube 3 produces along the vibrations of body elastic deformation opposing radially from interior pipe 1 or Control arm body, these vibrations are filtered and can not continue and transmit, so that vehicle operating is more steady, the raising travelling comfort.

But because the inner and

outer pipe

1,2 of this kind lining and India rubber tube 3 are sulfuration all-in-one-pieces, when the Control arm body drives outer tube 2 when the axle core rotates, India rubber tube 3 very easily is sheared destruction, India rubber tube 3 its structural strengths of destroyed back obviously reduce, the ability of lining damping will descend greatly, in other words the lining poor durability that comes to this, service life is low.

Summary of the invention

The purpose of this utility model just provides lasting Control arm lining in a kind of service life.

The scheme that adopts is exactly a kind of Control arm lining, comprise interior pipe and spring tube that size matches, it is characterized in that: pipe and the machine-shaping of spring tube independence in described, on the pipe shaft of pipe, both socket faces were provided with and limit the position limiting structure that it slides vertically in spring tube was set in.

As shown from the above technical solution: position limiting structure of the present utility model can be stoped interior pipe and spring tube slide relative vertically, when wheel or car body vibrations, Control arm or interior pipe impose on spring tube along body application force radially, spring tube produces corresponding elastic deformation immediately, plays the effect of vibration isolation, damping; Because spring tube and interior pipe are processing respectively earlier, connect together then, Control arm vibrations or when reversing, spring tube can just avoid spring tube to be sheared the possibility of destruction thereupon along interior pipe coaxial rotation so, significantly improve the service life of lining; And process and assemble is convenient.

Description of drawings

Fig. 1 is the main TV structure scheme drawing of the lining of prior art;

Fig. 2 is a main TV structure scheme drawing of the present utility model;

The main TV structure scheme drawing of Fig. 3 preferred implementation of the present utility model;

Fig. 4 is the front view of spring tube;

Fig. 5 is a running condition reference diagram of the present utility model.

The specific embodiment

A kind of Control arm lining shown in Fig. 2,3,4,5, comprise the metal inner pipe 10 of independent machine-shaping and the spring tube of mainly making 20 by elastic body, the elastomeric material of spring tube 20 can be that abrasion resistant elastic resin material is made, and also can be that rubber constitutes; Both sizes match, the internal diameter of the external diameter of pipe 10 and spring tube 20 coincide just, and on the pipe shaft of pipe 10, both socket faces were provided with and limit the position limiting structure that it slides vertically in spring tube 20 was set in, guarantee two body axial location relative fixed, play the effect of damping jointly.

Lining under the running condition is arranged in the connecting bore on Control arm 40 ends, the axial approximate horizontal of the body of lining, in pipe 10 be connected with wheel stand with car body respectively with another termination of Control arm, when wheel vibrations or car body vibrations, spring tube 20 is subjected to producing along radially application force of body, simultaneously elastic deformation and absorbs and filter this vibrations, avoid vibrations to propagate, to reach effect to vehicle vibration isolation, damping by lining.Because spring tube 20 of the present utility model and interior pipe 10 are processing respectively earlier, connect together then, Control arm 40 is because of car body vibrations when the axle core of lining reverses relatively so, spring tube 20 can rotate along the surface of interior pipe 10 with Control arm 40, be sheared the possibility of destruction like this with regard to the elastomeric material of having avoided spring tube 20, also just improved the service life of corresponding lining.

As a rule, because spring tube 20 is resilient, the external diameter of pipe 10 in as long as the internal diameter of spring tube 20 is slightly larger than, assembling later interior pipe 10 and spring tube 20 almost is axial slip not to take place, pipe 10 can not skid off in spring tube 20 just, and this is a kind of form of position limiting structure just.But for the higher spring tube of some ratio of rigidity 20 also can be rotated swimmingly along interior pipe 10 side faces, had better on the outer wall of interior pipe 10 position limiting structure be set, suitably increase the internal diameter of spring tube 20 simultaneously; Position limiting structure can be to cooperate along the concave, convex position that is provided with on the fitting surface of two bodys, preferably position limiting structure is an annular protrusion 11, the circumferencial direction of the annular of annular protrusion 11 is perpendicular to the axle core of body, and just Huan Xing annular bearing of trend is perpendicular to body axle core.Certainly, annular protrusion 11 can be arranged on the inwall of spring tube 20, and corresponding concave part with it is set on the outer wall of interior pipe 10, but pipe 10 surfaces in preferably annular protrusion 11 is arranged on are provided with corresponding concave part with it on spring tube 20 inwalls then; So not only easy to assembly, and annular protrusion 11 is difficult for being worn, and the service life of whole lining is more lasting.

Further, a pipe end of 10 in annular protrusion 11 is arranged on, like this in the profile of pipe 10 be the T font, accordingly spring tube 20 so long as roughly cooresponding with it reducing shape get final product, the profile of spring tube 20 also is the T font or claims that ladder is tubular like this, and interior pipe 10 can insert spring tube 20 easily.Like this be provided with processing, the assembling all simpler, structural strength is also reliable; Because Control arm all becomes U-shaped usually, lining is two one group of two ends that are installed in this Control arm 40 symmetrically, as shown in Figure 5, so as long as lining one end is provided with annular protrusion 11, big or the minor diameter termination of two linings on the same Control arm 40 is installed on the Control arm relatively, and the axial location of pipe 10 and spring tube 20 is fixed in can guaranteeing; If special vehicle, also can annular protrusion 11 be set at interior pipe two ends, so whole lining just is the shape of dumbbell, and the effect of its axial location is more reliable.

Further, shown in Fig. 3,4, spring tube 20 preferably includes skeleton 21, skeleton 21 in a tubular form, elastomeric material is positioned at the inside and outside both sides of skeleton 21 for the pipe box shape, elastic body and skeleton 21 are injected into one usually, such skeleton 21 is simple in structure, easy to process.Skeleton 21 can improve the rigidity of spring tube 20, and can make spring tube 20 stressed being more evenly distributed, the service life of further having improved lining.Further, described annular protrusion 11 is positioned at pipe 10 1 ends, and described spring tube 20 be the step tubulose, and the size of its large scale part is coincide with the size of annular protrusion 11, the small size size and the pipe shaft size of interior pipe 10 partly is identical.Obviously, annular protrusion 11 is positioned at the end installation of being convenient to peg graft; Certainly, skeleton 21 also is the reducing shape or claims the ladder pipe.Can also offer groove 24 in the inner wall surface of spring tube 20, for example shown in Figure 4, groove 24 is criss-cross, can hold grease or lubricating oil in it, make spring tube 20 more smooth and easy, further avoided spring tube 20 to be worn or the possibility of fail in shear with relatively rotating of interior pipe 10.And the intermediate location between all reducing position, face and face all preferably adopts arc transition on the lining, has so further avoided stressed and has concentrated, possibility of having avoided intermediate location to be worn and to destroy, the service life of raising lining.

During use, can be the outer wall of small diameter portion of spring tube 20 and the inwall interference fit of the connecting bore on the Control arm 40, the position of lining and Control arm 40 is the energy relative fixed just, preferably the outward flange 22 of the minor diameter termination of spring tube 20 is to outer lug, form the structure of locking barb like this, can prevent that spring tube 20 from coming off from the connecting bore of Control arm; Further, inward flange 23 inwardly protrudings of major diameter one end of spring tube 20, pipe 10 drops or skids off the inner chamber of spring tube 20 vertically in so further avoiding, and plays the effect of another locking barb.Being connected and fixed of whole lining is all more reliable, and the running condition of lining as shown in Figure 5.

The vibrations of vehicle can not only effectively be subdued and resist to such Control arm lining, and service life is lasting, is adapted at using in the shock-damping structure of various vehicles.

Claims

1. Control arm lining, comprise interior pipe (10) and spring tube (20) that size matches, it is characterized in that: pipe (10) and the independent machine-shaping of spring tube (20) in described, spring tube (20) is set on the pipe shaft of interior pipe (10), and both socket faces are provided with and limit the position limiting structure that it slides vertically.

2. Control arm lining according to claim 1, it is characterized in that: described position limiting structure comprises the annular protrusion (11) that is provided with along interior pipe (10) outer peripheral face, the circumferencial direction of this annular protrusion (11) is perpendicular to the axle core of body, and the shape of described spring tube (20) is corresponding with the shape of interior pipe (10).

3. Control arm lining according to claim 2, it is characterized in that: described spring tube (20) comprises skeleton (21) and elastic body, described skeleton (21) in a tubular form, elastic body is positioned at the inside and outside both sides of skeleton (21) for the pipe box shape, elastic body and skeleton (21) are injected into one.

4. Control arm lining according to claim 3, it is characterized in that: described annular protrusion (11) is positioned at pipe (10) one ends, described spring tube (20) is the step tubulose, and the size of its large scale part is coincide with the size of annular protrusion (11), the pipe shaft size of the size of small size part and interior pipe (10) is identical.

5. Control arm lining according to claim 4 is characterized in that: the outward flange (22) of minor diameter one end of described spring tube (20) is to inward flange (23) inwardly protruding of outer lug, major diameter one end.

6. Control arm lining according to claim 5 is characterized in that: the elastic body of described spring tube (20) is made of rubber, and the inwall of spring tube (20) offers the groove (24) that is used to hold lubricating oil or fat; Arc transition is adopted at the position of face on the described lining and face transition.