CN201110336Y - Rubber-plastic composite bushing - Google Patents
Rubber-plastic composite bushing Download PDFInfo
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- CN201110336Y CN201110336Y CNU2007200886893U CN200720088689U CN201110336Y CN 201110336 Y CN201110336 Y CN 201110336Y CN U2007200886893 U CNU2007200886893 U CN U2007200886893U CN 200720088689 U CN200720088689 U CN 200720088689U CN 201110336 Y CN201110336 Y CN 201110336Y
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- rubber
- bushing
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- plastic composite
- composite bush
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Abstract
A rubber-plastic composite bushing belongs to a damping device or a sliding bearing for connecting automobile parts, a rubber sleeve body 1 is fixed on the outer cylindrical surface of a steel sleeve 2, and a plastic bushing 5 is fixed in an inner hole of the steel sleeve 2. The outer cylindrical surface of the middle part of the rubber sleeve body 1 is at least provided with a circle of annular groove 6, and two end parts of the rubber sleeve body 1 are provided with conical chamfers 7. The interference fit and variable rigidity design are facilitated. The phenomena of glue layer accumulation, axial retraction and press mounting failure of the lining, deviation, inclination, eccentric wear and the like of the lining are overcome. The plastic bushing 5 is made of oil-containing nylon or polyformaldehyde materials, is suitable for heavy-load working conditions, has the characteristics of small abrasion, light weight, corrosion resistance, simple manufacture, small friction coefficient, stable performance and the like, has good sealing performance, and can realize maintenance-free performance.
Description
Technical field
The utility model relates to the damped appliance that a kind of auto parts and components connect usefulness, also relates to a kind of sliding bearing.Relate in particular to a kind of rubber-plastic composite bush.
Background technique
Abominable applying working condition has shortened the working life of each big assembly of automobile, adopts flexible connection can control the transmission of vibrations between each assembly, reduces the exciting force of focus.To alleviate operating mode.Rubber bushing be common between the automobile assembly and leverage between among flexible the connection, its structural type is divided into three kinds: the one, and the gum lining, hour use at load, cost is low: the 2nd, cartridge type rubber bushing in the bonded metal uses when load is moderate, cost is moderate; Glue-line " axial retraction " reaches phenomenons such as " press-fiting not in place " but these two kinds of linings are avoided in use.Subdue in use that lining is gone around, inclination, eccentric wear, etc. phenomenon.The 3rd, the rubber bushing of metal inner/outer tube is arranged, as Chinese patent notification number: CN200958539, the day for announcing: on October 10th, 2007, it is described that the model utility name is called " combined type rubber bushing ", its rubber layer sticks on the interior central siphon outer surface of metal, be pressed in the metal shell then, the reducing extruding is carried out at the shell two ends, limited the axial deformation of rubber, strengthened axial bearing capacity and the torsion capacity of compounded rubber lining, improved the radial rigidity of compounded rubber lining and axial bearing capacity, mainly when load is big, used, cost is higher.More than three kinds of rubber bushings all be to utilize the rubber layer distortion to alleviate axial torsion to impact, phenomenons such as that the long-term distortion of rubber layer is easy to generate is aging, wearing and tearing, cracking, so that working life is short.And because such lining all adopts interference fit to install, aforesaid lining is when press-fiting, rubber layer is prone to phenomenons such as " accumulation ", " axial retraction ", " press-fiting not in place " and rubber deformation amount be excessive, causes that going around in use appears in lining, the abnormal conditions of inclination, eccentric wear and heavy duty damping property difference.
Summary of the invention
The purpose of this utility model is that distortion amount and wear extent are big at existing lining rubber layer discontinuity, and damping performance is relatively poor, defective and deficiency that working life is short, propose a kind of stressed and wearing and tearing evenly, damping effect is better, the rubber-plastic composite bush of long service life.
The purpose of this utility model realizes in the following manner: a kind of rubber-plastic composite bush, comprise rubber body and steel bushing, and the rubber body is fixed on the outer cylinder surface of steel bushing, is fixed with plastic bushing in the endoporus of steel bushing.
At least be provided with a ring annular groove on the outer cylinder surface at rubber body described in the utility model middle part, the two end part of described rubber body are shaped on the circular cone chamfering.
It is 15-45 ° that the utility model can also make the oblique angle of circular cone chamfering.
The axial length of plastic bushing described in the utility model is provided with seal ring less than the axial length of steel bushing in the steel bushing endoporus at plastic bushing two ends.
Seal ring described in the utility model is by elastomer and metal frame is bonding or pressing forms, and the elastomer on the seal ring endoporus tilts towards the outer end of steel bushing.
Be provided with oil-return groove in the endoporus of plastic bushing described in the utility model.
Oil-return groove described in the utility model is spiral yarn shaped or intersects lineal shape linear or that connect vertically.
Plastic bushing described in the utility model adopts oil-containing nylon or polyformaldehyde material to make.
Therefore, compared with prior art the utlity model has following tangible advantage:
1. the rubber bushing both ends of the surface present taper shape, and the edge section is with arc transition, and the design of lining middle part has the tangible concave arc groove in one to multiple road, the similar bimodal or multimodal shape of its front projection, favourable interference assembling and change rigidity Design.
A, the glue-line " accumulation " that is produced when helping overcoming bushing press-mounting with bimodal or multimodal formula structure have avoided using process mesoglea " axial retraction " to reach phenomenons such as " press-fiting not in place " and lining sideslip, inclination, eccentric wear.
B, adopt bimodal or multimodal formula structure can make automobile under the inviolent situation of underloading or vibrations, the lining radial rigidity is less, makes the rubber body can absorb impact energy comparatively fully, the cushioning effect of performance rubber bushing; When automobile strenuous vibration or load were big, the lining radial rigidity improved thereupon, to avoid the causing integrally-built destruction of product because of rubber body amount of deformation under heavy duty is excessive.
2. plastic bushing is the tubulose that inwall has oil-return groove, and oil-return groove can be stored lubricating grease, Integrated Chip and chip removal.Prolong the working life of product.The forms such as groove that oil-return groove can be designed to crossed grooves, spiral chute and axially connect.The metal pivot pin becomes the antithesis friction pair with the plastic bushing mutual group, to alleviate glue-line transition distortion, makes every effort to multiaxis with the rubber body to being subjected to force environment to be converted into single shaft to being subjected to force environment, to increase the service life.
3. plastic bushing adopts oil-containing nylon or polyformaldehyde material, and applicable to severe duty, it is little, in light weight, corrosion-resistant to have abrasion, makes simply, and friction factor is little, characteristics such as stable performance.
4. be pressed with seal ring at the two end part of steel bushing endoporus, prevent that extraneous dust, sandstone, earth etc. from entering in the plastic bushing, with the sealing effect of raising rubber-plastic composite bush friction pair, and then the workload of minimizing maintaining, realize the non-maintaining of rubber-plastic composite bush assembly.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of a kind of oil groove in the plastic bushing 5;
Fig. 3 is the structural representation of another kind of oil groove in the plastic bushing 5;
Fig. 4 is the structural representation of the third oil groove in the plastic bushing 5;
Fig. 5 is the structural representation of seal ring 3:
Fig. 6 is the radial rigidity plotted curve of the utility model bush Assembly.
Among the figure, rubber body 1, steel bushing 2, seal ring 3, metal pivot pin 4, plastic bushing 5, annular groove 6, circular cone chamfering 7, oil-return groove 8, elastomer 9, metal frame 10.
Embodiment
Below in conjunction with description of drawings and embodiment the utility model is described in further detail:
Referring to Fig. 1, a kind of rubber-plastic composite bush comprises rubber body 1 and steel bushing 2, and rubber body 1 is fixed on the outer cylinder surface of steel bushing 2, is fixed with plastic bushing 5 in the endoporus of steel bushing 2.The skin that 1 sulfuration of rubber body is bonded in steel bushing 2 is on the outer cylinder surface, constitutes rubber bushing.Plastic bushing 5 presses fit into certain magnitude of interference in the endoporus of steel bushing 2, forms the rubber-plastic composite bush assembly.Metal pivot pin 4 with matching is installed in plastic bushing 5 endoporus then.
Referring to Fig. 1, Fig. 6, at least be provided with a ring annular groove 6 on the outer cylinder surface at described rubber body 1 middle part, two to four road annular grooves 6 also can be set, to form the structure of similar bimodal or multimodal formula, alleviate the glue-line " accumulation " that lining produces when press-fiting, avoid phenomenons such as going around appears in bush Assembly, inclination, eccentric wear, simultaneously both can improve the shock-absorbing performance of rubber body 1 when underloading, can prevent again that rubber body 1 from causing damaging because of amount of deformation is excessive when heavy duty.The section configuration of annular groove 6 is semicircle or arc, and its groove depth is generally the 1/2-3/5 of rubber body 1 thickness.For ease of the interference assembling of bush Assembly in the component axis hole, can be shaped on circular cone chamfering 7 at the two end part of rubber body 1.The oblique angle of circular cone chamfering 7 is generally 15-45 °.Can adopt arc transition between the external cylindrical surface of its circular cone chamfering 7 and rubber body 1.
Referring to Fig. 2, Fig. 3, Fig. 4 is provided with oil-return groove 8 in the endoporus of described plastic bushing 5.Its oil-return groove 8 can be as shown in Figure 2 spiral yarn shaped, also can be that as shown in Figure 3 intersection is linear, also can be the lineal shape that connects vertically as shown in Figure 4.For improving the greasy property under the severe duty, reduce wear, plastic bushing 5 preferably adopts oil-containing nylon or polyformaldehyde material to make.
Referring to Fig. 1, Fig. 5, for improving the sealing effect of rubber-plastic composite bush, prevent the invasion of extraneous dust, sandstone, earth to metal pivot pin 4, friction pair that plastic bushing 5 constitutes, reduce the workload of maintaining, realize the non-maintaining of rubber-plastic composite bush assembly, preferably make the axial length of the axial length of described plastic bushing 5, in steel bushing 2 endoporus of the two ends of plastic bushing 5, be provided with seal ring 3 less than steel bushing 2.Promptly press-fit seal ring 3 at the two ends of steel bushing 2 endoporus.Bonding or pressing forms described seal ring 3 by elastomer 9 and metal frame 10, and the elastomer 9 on seal ring 3 endoporus tilts towards the outer end of steel bushing 2.Elastomer 9 closely contacts with the outer cylinder surface of metal pivot pin 4, stops entering of extraneous dust, the grains of sand.
The utility model structure fabrication becomes the lining trial target of certain type lorry airsuspension system hunched beam front end, is used for connecting of vehicle frame and vehicle bridge.Wherein plastic bushing 5 adopts the oil-containing nylon materials to make, the shape that the oil-return groove 8 in plastic bushing 1 endoporus adopts as shown in Figure 2, its abrasion test for data and with the comparison of other product performance of the same type referring to table 1.
Table 1, friction-wear test data
As seen, the utility model plastic bushing that adopts oil-containing nylon to make has tangible performance advantage than polyoxymethylene lining and the compound tin bronze bimetal liner of steel backing from table 1.Above lining trial target is through service testing, have easy for installation, wear-resistant, advantage such as variable rigidity property is good.Under underloading and heavy duty operating mode good damping performance is arranged all, and fault is few, can realizes non-maintainingly substantially, can improve about 20% working life.
Claims (8)
1. a rubber-plastic composite bush comprises rubber body (1) and steel bushing (2), and it is characterized in that: rubber body (1) is fixed on the outer cylinder surface of steel bushing (2), is fixed with plastic bushing (5) in the endoporus of steel bushing (2).
2. a kind of rubber-plastic composite bush according to claim 1 is characterized in that: be provided with a ring annular groove (6) at least on the outer cylinder surface at described rubber body (1) middle part, the two end part of described rubber body (1) are shaped on circular cone chamfering (7).
3. a kind of rubber-plastic composite bush according to claim 1 and 2 is characterized in that: the oblique angle of circular cone chamfering (7) is 15-45 °.
4. a kind of rubber-plastic composite bush according to claim 1 is characterized in that: the axial length of described plastic bushing (5) is provided with seal ring (3) less than the axial length of steel bushing (2) in steel bushing (2) endoporus at plastic bushing (5) two ends.
5. a kind of rubber-plastic composite bush according to claim 4 is characterized in that: described seal ring (3) is by elastomer (9) and metal frame (10) is bonding or pressing forms, and the elastomer (9) on seal ring (3) endoporus tilts towards the outer end of steel bushing (2).
6. a kind of rubber-plastic composite bush according to claim 1 is characterized in that: be provided with oil-return groove (8) in the endoporus of described plastic bushing (5).
7. a kind of rubber-plastic composite bush according to claim 6 is characterized in that: described oil-return groove (8) is spiral yarn shaped or intersects lineal shape linear or that connect vertically.
8. according to claim 1 or 4 or 6 described a kind of rubber-plastic composite bush, it is characterized in that: described plastic bushing (5) adopts oil-containing nylon or polyformaldehyde material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200886893U CN201110336Y (en) | 2007-12-04 | 2007-12-04 | Rubber-plastic composite bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200886893U CN201110336Y (en) | 2007-12-04 | 2007-12-04 | Rubber-plastic composite bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201110336Y true CN201110336Y (en) | 2008-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200886893U Expired - Fee Related CN201110336Y (en) | 2007-12-04 | 2007-12-04 | Rubber-plastic composite bushing |
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| CN (1) | CN201110336Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2423532A1 (en) * | 2010-08-31 | 2012-02-29 | BPW Bergische Achsen KG | Steel rubber sleeve |
| CN102537068A (en) * | 2011-12-14 | 2012-07-04 | 苏州工业园区高登威科技有限公司 | Bush for car gearbox fixing hole |
| CN102574506A (en) * | 2009-10-29 | 2012-07-11 | 罗伯特·博世有限公司 | Windshield wiper device in a vehicle |
| CN103600332A (en) * | 2013-11-22 | 2014-02-26 | 广州中国科学院先进技术研究所 | Assembling device for plastic and silicon rotary drums |
| CN107571527A (en) * | 2017-08-29 | 2018-01-12 | 老河口市万顺汽车配件有限公司 | A kind of production technology of automobile rare earth oil-containing modified MC nylon casting bushing and its application |
| CN114811037A (en) * | 2022-05-16 | 2022-07-29 | 浙江万里扬股份有限公司 | Bearing structure assembly, derailleur and vehicle |
-
2007
- 2007-12-04 CN CNU2007200886893U patent/CN201110336Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102574506A (en) * | 2009-10-29 | 2012-07-11 | 罗伯特·博世有限公司 | Windshield wiper device in a vehicle |
| CN102574506B (en) * | 2009-10-29 | 2015-01-14 | 罗伯特·博世有限公司 | Windshield wiper device in a vehicle |
| EP2423532A1 (en) * | 2010-08-31 | 2012-02-29 | BPW Bergische Achsen KG | Steel rubber sleeve |
| CN102537068A (en) * | 2011-12-14 | 2012-07-04 | 苏州工业园区高登威科技有限公司 | Bush for car gearbox fixing hole |
| CN103600332A (en) * | 2013-11-22 | 2014-02-26 | 广州中国科学院先进技术研究所 | Assembling device for plastic and silicon rotary drums |
| CN103600332B (en) * | 2013-11-22 | 2015-07-29 | 广州中国科学院先进技术研究所 | Plastic silicon glue cylinder assembling device |
| CN107571527A (en) * | 2017-08-29 | 2018-01-12 | 老河口市万顺汽车配件有限公司 | A kind of production technology of automobile rare earth oil-containing modified MC nylon casting bushing and its application |
| CN114811037A (en) * | 2022-05-16 | 2022-07-29 | 浙江万里扬股份有限公司 | Bearing structure assembly, derailleur and vehicle |
| CN114811037B (en) * | 2022-05-16 | 2024-06-18 | 浙江万里扬股份有限公司 | Support structure assembly, transmission and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080903 Termination date: 20101204 |