CN203793408U - Electric power steering worm wheel and worm clearance adjusting mechanism - Google Patents
Electric power steering worm wheel and worm clearance adjusting mechanism Download PDFInfo
- Publication number
- CN203793408U CN203793408U CN201420058836.2U CN201420058836U CN203793408U CN 203793408 U CN203793408 U CN 203793408U CN 201420058836 U CN201420058836 U CN 201420058836U CN 203793408 U CN203793408 U CN 203793408U
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- CN
- China
- Prior art keywords
- worm
- bearing
- electric power
- adjusting mechanism
- power steering
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- 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
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Abstract
The utility model provides an electric power steering worm wheel and worm clearance adjusting mechanism. The electric power steering worm wheel and worm clearance adjusting mechanism comprises a shell, an output shaft, a worm wheel, a worm and a buffer device. The output shaft is arranged on the upper portion of an inner cavity of the shell through a bearing. The worm wheel is arranged on the upper portion of the inner cavity of the shell and arranged outside the output shaft in a sleeved mode. The two ends of the worm are arranged on the lower portion of the inner cavity of the shell through bearings, bearing bushes are arranged outside the bearings, and open holes are formed in the bearing bushes. The buffer device is arranged in the shell, and one end of the buffer device penetrates through the open holes. According to the electric power steering worm wheel and worm clearance adjusting mechanism, the clearance between the worm wheel and the worm is adjusted through the combination of a buffer block, adjusting springs and a pressing block, impact of the worm bearings on the bearing bushes in the transmission process can be buffered, and therefore engagement noise and steering noise of a worm wheel and worm reducing mechanism in the transmission process are lowered.
Description
Technical field
The utility model belongs to vehicle transmission gear field, particularly a kind of electric power steering gap of worm adjusting mechanism.
Background technology
Along with electric boosting steering system progressively popularizing in modern vehicle, the noise that turns to of electric boosting steering system becomes the focus that people pay close attention to gradually.Compare conventional hydraulic servo steering system, electric boosting steering system has not had hydraulic booster system, so without hydraulic pressure noise, but produced turbine and worm decelerator gearing noise and commutation noise thereupon.
Utility model content
The purpose of this utility model is to provide a kind of can reduce the gearing noise of turbine and worm decelerator in transmission process and the electric power steering gap of worm adjusting mechanism of commutation noise.
For solving the problems of the technologies described above, the utility model electric power steering gap of worm adjusting mechanism, comprising: housing; Output shaft, described output shaft by bearing assemble in the inner chamber top of described housing; Worm gear, described worm gear is arranged on the inner chamber top of described housing, is set in described output shaft outside; Worm screw, the two ends of described worm screw in described enclosure interior, are provided with bearing carrier ring in the outside of described bearing by bearing press mounting, are provided with perforate in described bearing carrier ring bottom; And shock absorber, described shock absorber is arranged in described housing, and one end of described shock absorber is arranged in described perforate.
Preferably, described shock absorber comprises: hold-down nut, and described hold-down nut is fastening by screw thread and described housing; Bump rubber, described bump rubber is fixed on described hold-down nut inside; Briquetting, one end of described briquetting is arranged in described cushion chamber, and one end is arranged in described perforate in addition, props up the outer ring of described bearing; And spring, described spring is assemblied between briquetting and hold-down nut, and briquetting is assemblied between bearing and regulating spring.
Preferably, be also provided with stop gear in the both sides of described briquetting.
The utility model electric power steering gap of worm adjusting mechanism is adjusted the gap between worm and gear by the combination of bump rubber, regulating spring, briquetting, can cushion the impact of worm bearing to bearing carrier ring in transmission process, thereby reduce the gearing noise and commutation noise of turbine and worm decelerator in transmission process simultaneously.
Brief description of the drawings
Fig. 1 is the utility model electric power steering gap of worm adjusting mechanism cutaway view;
Fig. 2 is the utility model electric power steering gap of worm adjusting mechanism buffer unit structure schematic diagram.
Description of reference numerals in the outstanding accompanying drawing of the utility model automobile power assembly:
1-bearing carrier ring 2-worm bearing 3-briquetting
4-spring 5-bump rubber 6-hold-down nut
7-worm screw 8-stop gear 9-worm gear
10-output shaft 11-housing 12-attachment face
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model electric power steering gap of worm adjusting mechanism is described in further detail.
As shown in Figure 1 and Figure 2; the utility model electric power steering gap of worm adjusting mechanism; comprise: worm gear 9 press-fits in output shaft 10; output shaft 10 by bearing press mounting in housing 11; worm screw 7 press-fits in housing 11 by worm bearing 2, bearing carrier ring 1, worm bearing 2; bump rubber 5 is fixed on hold-down nut 6 inside; regulating spring 4 is assemblied between briquetting 3 and hold-down nut 6; briquetting 3 is assemblied between bearing 2 and regulating spring 4; while can be limited briquetting 3 stroke at the stop gear 8 of the both sides of briquetting 3, can play to worm screw 7 effect of protection.
In the time of vehicle generation handling maneuver, servomotor passes to worm gear 9 by worm screw 7 by power-assisted, and between assembling and briquetting 3 and hold-down nut 6, regulating spring 4 compresses the outer ring of worm bearing 2, the gap between compensation worm gear 9 and worm screw 7.Meanwhile, in the time starting to carry out servodrive, worm gear 9 has the power of a normal direction to worm screw 7, and this power is greater than the elastic force of regulating spring 4, and in the time that briquetting 3 contacts with bump rubber 5, bump rubber 5 plays buffer action, absorbs the impulsive force of worm bearing 2 to bearing carrier ring 1.Gap between worm gear 9 and worm screw 7 is compensated, and after worm bearing 2 is cushioned the impact of bearing carrier ring 1, can well solve the gearing noise and commutation noise problem of transmission device, in making assist torque obtain smooth transfer, realize good NVH performance.
Below the preferred embodiment of the utility model having been created illustrates, but the utility model is not limited to embodiment, those of ordinary skill in the art also can make all modification being equal to or replacement under the prerequisite without prejudice to the utility model creative spirit, and the modification that these are equal to or replacement are all included in the application's scope.
Claims (3)
1. electric power steering gap of worm adjusting mechanism, is characterized in that, comprising:
Housing;
Output shaft, described output shaft by bearing assemble in the inner chamber top of described housing;
Worm gear, described worm gear is arranged on the inner chamber top of described housing, is set in described output shaft outside;
Worm screw, the two ends of described worm screw in described enclosure interior, are provided with bearing carrier ring in the outside of described bearing by bearing press mounting, are provided with perforate in described bearing carrier ring bottom; And
Shock absorber, described shock absorber is arranged in described housing, and one end of described shock absorber is arranged in described perforate.
2. electric power steering gap of worm adjusting mechanism according to claim 1, is characterized in that, described shock absorber comprises:
Hold-down nut, described hold-down nut is fastening by screw thread and described housing;
Bump rubber, described bump rubber is fixed on described hold-down nut inside;
Briquetting, one end of described briquetting is arranged in described cushion chamber, and one end is arranged in described perforate in addition, props up the outer ring of described bearing; And
Spring, described spring is assemblied between briquetting and hold-down nut, and briquetting is assemblied between bearing and regulating spring.
3. electric power steering gap of worm adjusting mechanism according to claim 2, is characterized in that, is also provided with stop gear in the both sides of described briquetting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420058836.2U CN203793408U (en) | 2014-02-07 | 2014-02-07 | Electric power steering worm wheel and worm clearance adjusting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420058836.2U CN203793408U (en) | 2014-02-07 | 2014-02-07 | Electric power steering worm wheel and worm clearance adjusting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203793408U true CN203793408U (en) | 2014-08-27 |
Family
ID=51375652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420058836.2U Expired - Fee Related CN203793408U (en) | 2014-02-07 | 2014-02-07 | Electric power steering worm wheel and worm clearance adjusting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203793408U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106687358A (en) * | 2014-09-26 | 2017-05-17 | 日本精工株式会社 | Electric power steering device |
-
2014
- 2014-02-07 CN CN201420058836.2U patent/CN203793408U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106687358A (en) * | 2014-09-26 | 2017-05-17 | 日本精工株式会社 | Electric power steering device |
| US10183693B2 (en) | 2014-09-26 | 2019-01-22 | Nsk Ltd. | Electric power steering device |
| CN106687358B (en) * | 2014-09-26 | 2019-05-31 | 日本精工株式会社 | Electric steering-assisted device |
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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: 20140827 Termination date: 20210207 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |