CN201895691U - Toothed rack liner mounting structure of power steering device - Google Patents
Toothed rack liner mounting structure of power steering device Download PDFInfo
- Publication number
- CN201895691U CN201895691U CN2010206236744U CN201020623674U CN201895691U CN 201895691 U CN201895691 U CN 201895691U CN 2010206236744 U CN2010206236744 U CN 2010206236744U CN 201020623674 U CN201020623674 U CN 201020623674U CN 201895691 U CN201895691 U CN 201895691U
- Authority
- CN
- China
- Prior art keywords
- toothed rack
- rack bush
- power steering
- mounting structure
- block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 230000010354 integration Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- -1 polytetrafluoroethylene Polymers 0.000 abstract description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract description 2
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011343 solid material Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 210000001138 tear Anatomy 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model aims to provide a toothed rack liner mounting structure of a power steering device, which is good in durability and has powerful noise-absorbing and shock-absorbing functions. The toothed rack liner mounting structure of the power steering device comprises a toothed rack, O-shaped rings, a hollow cylindrical toothed rack liner, a stopper and a casing, wherein the toothed rack liner is sandwiched between the toothed rack and the stopper, the outer circumference of the stopper is fixed to the inner surface of the casing through a thread, the end parts of the stopper are sealed by the O-shaped rings, and the toothed rack liner is in interference fit with the toothed rack and in interference fit with the toothed rack liner. By adopting the toothed rack liner made of polytetrafluoroethylene and combining the unique engagement structure, the toothed rack liner mounting structure of the power steering device is superior in durability, noise-absorbing effect and shock-absorbing effect, solves the problem of oil leakage, and improves the comfort of the vehicle.
Description
Technical field
The utility model belongs to the automobile steering system technical field, specially refers to the rack bush mounting structure of the power steering in the automobile steering system.
Background technology
In power steering, rack bush is used for supporting, the stationary deflector middle rack, prevents tooth bar distortion in deflector, break-in and then the fault of abnormal sound, oil sealing leakage of oil occurs turning to.As shown in Figure 1, in traditional power steering, rack bush (1) inner ring and tooth bar (2) are transition fit, rack bush (1) outer ring and tooth bar block (3) free-running fit, tooth bar block (3) is threaded with the steering box housing, and the sealing of O type circle is adopted in the end of tooth bar block (3).Therefore rack bush (1) is free-running fit because wall thickness is thinner with tooth bar block (3), must carry out spacingly to it in that a step axially is set, and is pulled out by the friction force of tooth bar preventing, this has just increased difficulty of processing.Traditional rack bush generally adopts material of construction processing such as polyformaldehyde, nylon, and wear resisting property is poor, and hardness is higher, and damping effect is relatively poor, is difficult for absorbing noise.After work a period of time, tooth bar can have certain abrasion loss to rack bush, causes gap value between the two to increase, and forms and turns to abnormal sound, influences the comfort level of automobile.
In addition, traditional sealing means is that rack bush (1) contacts with O type circle (5), when rack bush in use weares and teares, after the change in size, just occurs sealing phenomenon tight, leakage of oil easily.
The utility model content
The purpose of this utility model is the rack bush mounting structure that proposes the power steering that a kind of durability is good, the sound-absorbing cushioning ability is strong.
The rack bush mounting structure of power steering of the present utility model comprises rack bush, block, the housing of tooth bar, O type circle and hollow tube-shape, described rack bush is located between tooth bar and the block, the periphery of described block is fixed by screw thread and shell inner surface, the end of block is interference fit between described rack bush and tooth bar, the block by the sealing of O type circle.
It between rack bush and tooth bar, the block interference fit, make that the rack bush thickness in the power steering of same size is thicker, the sound-absorbing cushioning ability is stronger, can increase simultaneously the area of contact between rack bush and tooth bar, the block, the contact of realization face, transmit the impulsive force between the three better, avoid occurring turning to abnormal sound, improve the automobile comfort level.
Described rack bush adopts polytetrafluoroethylmaterial material to make, and polytetrafluoroethylmaterial material is compared traditional tooth bar lagging material and had following characteristic advantage: 1, high temperature resistant---and use operating temperature to reach 250 ℃; 2, low temperature resistant---have favorable mechanical toughness; Even temperature drops to-196 ℃, also can keep 5% percentage elongation; 3, withstanding corrosion---to most of pharmaceutical chemicalss and solvent, show inertia, energy strong alkali-acid resistance, water and various organic solvent; 4, weather---aging life-span best in the plastics is arranged; 5, high lubricated---be friction coefficient the lowest (0.04) in the solid material; 6, do not adhere to---be surface tension minimum in the solid material, do not adhere to any material.The engineering properties of polytetrafluoroethylene is softer, and material hardness is lower, therefore has damping capaicty preferably, and its unrivaled high-lubricity and non-adhesiveness allow it possess good wear resistance again simultaneously, can increase the service life.
For solving the leakage of oil problem, the end of the block in the utility model is provided with inwardly outstanding circular step, and the both sides of described circular step offset with rack bush, O type circle respectively.Rack bush, O type circle and circular step have been realized the effect of double containment, even wearing and tearing in use appear in rack bush, also can not influence the sealing between O type circle and the circular step, so sealing effectiveness are better.
Traditional block is the branch body structure, because of technology is limit, occurs dimensional discrepancy man-hour easily adding, cause leakage of oil during assembling, block in the utility model is made into integration, and its end and rack bush, O type circle seal and prevent leakage of oil, therefore can thoroughly address the above problem.
The rack bush mounting structure of power steering of the present utility model has adopted polytetrafluoroethylmaterial material to make rack bush, simultaneously in conjunction with unique fit structure, its durability is better, the sound-absorbing cushioning ability is stronger, has solved problems such as leakage of oil, has improved the comfort level of automobile.
Description of drawings
Fig. 1 is the structural representation of the rack bush mounting structure of traditional power steering;
Fig. 2 is the structural representation of the rack bush mounting structure of power steering of the present utility model;
Fig. 3 is the sectional arrangement drawing of the rack bush mounting structure of power steering of the present utility model.
The specific embodiment
Describe the utility model in detail below in conjunction with specific embodiments and the drawings.
Embodiment 1:
Shown in Fig. 2,3, the rack bush mounting structure of power steering of the present utility model comprises rack bush 1, block 3, the housing 6 of tooth bar 2, O type circle 5 and hollow tube-shape, rack bush 1 is located between tooth bar 2 and the block 3, the periphery of block 3 is fixed by screw thread and housing 6 inside faces, is interference fit between rack bush 1 and tooth bar 2, the block 3.
Claims (4)
1. the rack bush mounting structure of a power steering, it is characterized in that comprising rack bush, block, the housing of tooth bar, O type circle and hollow tube-shape, described rack bush is located between tooth bar and the block, the periphery of described block is fixed by screw thread and shell inner surface, the end of block is interference fit between described rack bush and tooth bar, the block by the sealing of O type circle.
2. the rack bush mounting structure of power steering according to claim 1 is characterized in that described rack bush adopts polytetrafluoroethylmaterial material to make.
3. the rack bush mounting structure of power steering according to claim 1 and 2 is characterized in that the end of described block is provided with inwardly outstanding circular step, and the both sides of described circular step offset with rack bush, O type circle respectively.
4. the rack bush mounting structure of power steering according to claim 3 is characterized in that described block is made into integration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206236744U CN201895691U (en) | 2010-11-23 | 2010-11-23 | Toothed rack liner mounting structure of power steering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206236744U CN201895691U (en) | 2010-11-23 | 2010-11-23 | Toothed rack liner mounting structure of power steering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201895691U true CN201895691U (en) | 2011-07-13 |
Family
ID=44253607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206236744U Expired - Fee Related CN201895691U (en) | 2010-11-23 | 2010-11-23 | Toothed rack liner mounting structure of power steering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201895691U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108082272A (en) * | 2017-12-21 | 2018-05-29 | 芜湖恒隆汽车转向系统有限公司 | A kind of support device of rack-and-pinion manual steering gear |
| CN108082273A (en) * | 2017-12-21 | 2018-05-29 | 芜湖恒隆汽车转向系统有限公司 | The supporting and limiting device and method for supporting of rack-and-pinion manual steering gear |
-
2010
- 2010-11-23 CN CN2010206236744U patent/CN201895691U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108082272A (en) * | 2017-12-21 | 2018-05-29 | 芜湖恒隆汽车转向系统有限公司 | A kind of support device of rack-and-pinion manual steering gear |
| CN108082273A (en) * | 2017-12-21 | 2018-05-29 | 芜湖恒隆汽车转向系统有限公司 | The supporting and limiting device and method for supporting of rack-and-pinion manual steering gear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110713 Termination date: 20141123 |
|
| EXPY | Termination of patent right or utility model |