CN207261538U - A kind of automobile rear damper bushing - Google Patents

Abstract

The utility model discloses a kind of automobile rear damper bushing, it is socketed in including outer skeleton and coaxially interior inner frame, rubber bodies are filled between outer skeleton and inner frame, outer skeleton, inner frame and rubber bodies are coaxial rotary body, section is axially done along bushing, the middle part for having outer skeleton is that both ends are the curve to center monotone convergence parallel to axial straight line, the middle part of inner frame is parallel to axial straight line, and both ends are the dull curve dissipated laterally；The axial length of outer skeleton and inner frame is equal.The beneficial effects of the utility model are：The parcel effect to rubber bodies can be increased substantially, mitigates abrasion, extends the service life of product.

Description

A kind of automobile rear damper bushing

Technical field

The utility model belongs to auto parts and components field, is specifically a kind of automobile rear damper bushing.

Background technology

The main task of automobile rear damper is to reduce the amplitude of resonance, damping vibrations, improves the ride comfort of running car And control stability.In order to realize above-mentioned function, the connection of damper and vehicle frame and suspension trailing arm is flexible by rubber bushing Connection.The rubber bushing needs low cost, and maintenance is few, can prevent the noise of road transmission, and act in absorber damping force The deformation very little in direction.Rear shock absorbing bushing on existing automobile is made of outer skeleton, rubber bodies, inner frame, the outside diameter of inner frame Vulcanize connection with the internal diameter of rubber bodies, the internal diameter vulcanization connection of the outside diameter of rubber and outer skeleton, wherein rubber bodies internal diameter is more than interior The outside diameter of skeleton；The construction profile of outer skeleton, inner frame and rubber bodies is cylindrical, this structure and connection mode, in automobile Bushing bears certain radial load and axial impact loading during traveling, it is easy to occurs fatigue failure, on rubber surface Cracked, outer skeleton is easy to produce slip with casing, can not stop this for mounting dampers and the bolt of torsion beam The axial movement of kind.Chinese patent CN205689675U disclosed " a kind of automobile absorber bushing " on November 16th, 2016, Including inner frame, outer skeleton and rubber bodies, rubber bodies are arranged between inner frame and outer skeleton, inner frame by interior flat pipe portion and it is interior tiltedly Pipe portion forms, and outer skeleton is made of outer flat pipe portion and outer inclined tube portion, and interior flat pipe portion is parallel to each other with outer flat pipe portion, interior inclined tube portion and Outer inclined tube portion is parallel to each other, and correspondingly rubber body section is in symmetrical parallelogram like structure, rubber bodies by vulcanization with it is interior Skeleton, outer skeleton are structure as a whole.Since such conventional art is using quadrilateral symmetry, rubber is caused to have internal-and external diameter Some is not connected with metal tube respectively, after rubber carries out diameter reducing process, it may occur that fold, and then cause tired Labor timeliness；Meeting is directly when being bolted and rubber contact, rubber are easy to wear；Using this bushing, to be still equipped with one it is non- Gasket is marked to fit in the end of outer skeleton, trouble is caused to fittings supply.

The content of the invention

The utility model technical issues that need to address are that the structure design of existing automobile rear damper bushing is unreasonable, It is ineffective to the parcel of rubber bodies, abrasion and fatigue failure are easy to cause, so that a kind of automobile rear damper bushing is provided, can To increase substantially the parcel effect to rubber bodies, mitigate abrasion, extend the service life of product.

In order to realize goal of the invention, the utility model adopts the following technical solution：A kind of automobile rear damper bushing, including Outer skeleton and interior inner frame is coaxially socketed in, rubber bodies, outer skeleton, inner frame and rubber are filled between outer skeleton and inner frame Colloid is coaxial rotary body, and section is axially done along bushing, and the middle part for having outer skeleton is equal parallel to axial straight line, both ends To be parallel to axial straight line to the middle part of the curve of center monotone convergence, inner frame, both ends are dull diverging laterally Curve；The axial length of outer skeleton and inner frame is equal.

The bushing of this programme design, is still composed of three outer skeleton, inner frame and rubber bodies critical pieces, and outer The shape of skeleton and inner frame is made that significant change.Wherein, the cross sectional shape of outer skeleton is intermediate parallel in axial direction, two Hold to centre convergence, and the cross sectional shape of inner frame dissipates laterally for intermediate parallel in axial direction, both ends.In this way, outer skeleton The divergence curve of convergence curve and inner frame is adjacent to each other in end, outer skeleton and inner frame is formed to rubber bodies more comprehensively Parcel, three is more closely integrated into a whole, and preferably bears axial limiting and radial force.This structure band at the same time What is come is the raising of bonding strength, and tired timeliness can be greatly reduced, extend the service life of product.

Preferably, the length of a curve at outer skeleton both ends is more than the curve at inner frame both ends.Since dermoskeleton frame end portion will Matched with locating parts such as gaskets, by the longer of the Curve Design of outer skeleton, can make dermoskeleton frame it is open-ended more It is small, be adapted to the locating part that uses can also smaller, it is all advantageous in volume, weight.Simultaneously as the end perforate of inner frame Connecting bolt is inside also covered, the curve of inner frame is long to influence whether limit effect of the hole to bolt.

Preferably, the curve at outer skeleton both ends forms virtual aperture in end when rotated, the diameter of virtual aperture is less than mark The diameter of quasi- gasket.In design, the end of outer skeleton by the Curve Design of outer skeleton to certain length, can be made because of rotation The aperture of the virtual aperture of generation is less than the diameter for the Gaskets being intended that, it is possible to thoroughly breaks away from big and heavy in traditional scheme Non-standard gasket, standardization to product, the convenient degree to buying all have help.

Preferably, with arc transition between outer skeleton and the middle part straight line and both ends curve of inner frame.Rubber passes through contracting After the technique of footpath, under real vehicle applying working condition, be subject under the action of alternating cycles load, can make rubber vertical plane and inclined-plane you Junction produces fold, and then fatigue failure occurs, and is loaded in rubber surface and cracks；Production then can effectively be reduced using arc surface Rubber fold of the product under tired operating mode, meets the fatigue endurance requirement of vehicle, extends the service life of product.

Preferably, outer skeleton is steel, is axially fastened and be welded and fixed by symmetrical two halfbodies.Such design was both protected Enough intensity has been held, and can conveniently manufacture installation.

Preferably, section, the both sides mirror symmetry of section are done with the axial length of bushing between two parties.Such design is easy to The processing and manufacturing of parts, helps to improve efficiency during general assembly

In conclusion the beneficial effects of the utility model are：The parcel effect to rubber bodies can be increased substantially, is mitigated Abrasion, extends the service life of product.

Brief description of the drawings

Fig. 1 is the axial sectional view of the utility model.

Fig. 2 is the parts explosion of the utility model.

Fig. 3 is the use state diagram of the utility model.

Wherein：1 outer skeleton, 2 inner frames, 3 rubber bodies, 4 gaskets, 5 bolts, 11 outer skeleton stage casings, 12 outer skeleton epimeres, 13 Outer skeleton hypomere, 21 inner frame stage casings, 22 inner frame epimeres, 23 inner frame epimeres.

Embodiment

The utility model is further described with embodiment below in conjunction with the accompanying drawings.

Embodiment as shown in Figure 1 and Figure 2, is a kind of automobile rear damper bushing.Outer skeleton 1 of the bushing including outside, It is coaxial to be socketed in interior inner frame 2, rubber bodies 3 are filled between outer skeleton and inner frame.Outer skeleton, inner frame and rubber bodies are equal For coaxial rotary body.Section is axially done along bushing, the section of outer skeleton is observed, it can be found that outer skeleton of the outer skeleton by middle part Stage casing 11, the outer skeleton epimere 12 on top, outer 13 three parts of skeleton hypomere of lower part are formed, wherein the contour line in outer skeleton stage casing Parallel to axial direction, the contour line of outer skeleton epimere and outer skeleton hypomere are to the curve of center monotone convergence, both are right each other Claim.And inner frame by the inner frame stage casing 21 at middle part, the inner frame epimere 22 on top, lower part 23 three parts structure of inner frame hypomere Into wherein for the contour line in inner frame stage casing parallel to axial direction, the contour line and inner frame hypomere of inner frame epimere are laterally The curve of dullness diverging, both are mutually symmetrical.Whole outer skeleton similar to about one end opening Chinese tradition formula bird-caging, and Whole inner frame is dolioform similar to big at both ends and small in middle.The axial length of outer skeleton and inner frame is equal, and outer skeleton The length of a curve at both ends is more than the curve at inner frame both ends, when the curve at outer skeleton both ends is formed virtually in end when rotated Hole, the diameter of virtual aperture are less than the diameter of Gaskets.Outer skeleton and inner frame are formed by the steel plate forming of consistency of thickness, its China and foreign countries' skeleton is axially fastened by symmetrical two halfbodies and is welded and fixed, the bad mold joint of visible welding on finished product.Rubber parts is to pass through Sulfuration process realizes and is connected with outer skeleton and inner frame, between the middle part straight line and both ends curve of outer skeleton and inner frame with Arc transition, and section, the both sides mirror symmetry of section are done with the axial length of bushing between two parties.

In use state, as shown in figure 3, bolt 5 is penetrated through out of inner frame center through hole, the gasket 4 on bolt is Gaskets, have a diameter larger than the aperture in the hole of dermoskeleton frame end portion formation, and are finally used with this state entrucking.One kind of this example Automobile rear damper bushing, makes both this that rubber bodies are generated with good parcel by varying the shape of outer skeleton and inner frame Effect, can prevent in vehicle traveling process due to caused axial movement of jolting；Product can effectively be reduced under tired operating mode Rubber fold, extend the service life of product；Support expense can be reduced with applied code gasket；Outer skeleton is by two Halfbody splicing reduces assembly cost, improves operating efficiency.

Claims (6)

1. a kind of automobile rear damper bushing, including outer skeleton（1）Coaxially it is socketed in interior inner frame（2）, outer skeleton and interior Rubber bodies are filled between skeleton（3）, outer skeleton, inner frame and rubber bodies are coaxial rotary body, it is characterized in that, along bushing Section axially is done, the middle part for having outer skeleton is that both ends are to the curve of center monotone convergence, in-seam parallel to axial straight line The middle part of frame is parallel to axial straight line, and both ends are the dull curve dissipated laterally；The axial direction of outer skeleton and inner frame is long Spend equal.

2. a kind of automobile rear damper bushing according to claim 1, it is characterized in that, the length of a curve at outer skeleton both ends More than the curve at inner frame both ends.

3. a kind of automobile rear damper bushing according to claim 1 or 2, it is characterized in that, the curve at outer skeleton both ends exists Virtual aperture is formed during rotation in end, the diameter of virtual aperture is less than the diameter of Gaskets.

4. a kind of automobile rear damper bushing according to claim 1 or 2, it is characterized in that, in outer skeleton and inner frame With arc transition between portion's straight line and both ends curve.

5. a kind of automobile rear damper bushing according to claim 1 or 2, it is characterized in that, outer skeleton is steel, by symmetrical Two halfbodies axially fasten be welded and fixed.

6. a kind of automobile rear damper bushing according to claim 1 or 2, it is characterized in that, occupied with the axial length of bushing In do section, the both sides mirror symmetry of section.