CN204161441U - A kind ofly can eliminate inter-lobe clearance and reduce the briquetting assembly of friction force - Google Patents
A kind ofly can eliminate inter-lobe clearance and reduce the briquetting assembly of friction force Download PDFInfo
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- CN204161441U CN204161441U CN201420462889.0U CN201420462889U CN204161441U CN 204161441 U CN204161441 U CN 204161441U CN 201420462889 U CN201420462889 U CN 201420462889U CN 204161441 U CN204161441 U CN 204161441U
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- briquetting
- tooth bar
- friction force
- reduce
- briquetting assembly
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Abstract
A kind ofly can eliminate inter-lobe clearance and reduce the briquetting assembly of friction force, comprise interior pitch wheel and the tooth bar of rack and pinion steering gear, its side of tooth bar and gear are the engagement of mutual vertical configuration, the opposite side of tooth bar is then near the intrados of the briquetting assembly of a double cabochon, and the extrados of briquetting assembly is connected with a Compress Spring, the predetermincd tension of Compress Spring is passed to briquetting assembly, makes tooth bar pressed toward gear.The briquetting assembly of the double cabochon that the utility model is designed by it makes tooth bar reduce with the friction force of gear in W/S situation, whole deflector wearing and tearing reduce, part life improves, the utility model curved angle is adjustable, while being applicable to various rack and pinion steering gear, negative effect can not be caused to cost of parts.Gap between its rack-and-gear of elimination that the utility model is applicable to various rack and pinion steering gear and reduce the field of friction force.
Description
Technical field
The utility model relates to the briquetting device that a kind of wheel and rack connects, and particularly relates to a kind ofly to be applied to eliminating gap between its rack-and-gear and reducing the briquetting assembly of its friction force of rack and pinion steering gear.
Background technology
At present, rack and pinion steering gear has been widely used in automobile manufacturing field, rack and pinion steering gear especially requires to need to reduce internal friction and friction point as much as possible with the pinion and-rack manual steering gear of electronic power assist steering system (being called for short EPS) during fabrication, to reduce the power of EPS motor, make the power motor of EPS motor energy selection of small, and how economical reduction internal friction, be reduce productive costs, improve the consideration emphasis of parts quality.
And the rack and pinion steering gear under prior art, swing in motion process for avoiding tooth bar, therefore between tooth bar and briquetting assembly, form the linear contact lay of certain angle, this linear contact lay angle is larger, rack support is better, but according to physical theorem, more namely normal direction contact force is larger for linear contact lay angle, therefore the friction force of tooth bar is larger, and tooth bar is when swinging large, friction between wheel and rack is larger, the wearing and tearing of whole rack and pinion steering gear also can increase, parts bulk life time is caused to decline, maintaining cost increase, and just there is the optimization problem of linear contact lay angle between a tooth bar and briquetting assembly here.
Utility model content
In order to the linear contact lay owing to forming certain angle between tooth bar and briquetting assembly existed under solving prior art, although rack support is better, but friction force is larger, result in the problem that whole rack and pinion steering gear part life declines, we are first by reducing the actual tests checking after linear contact lay angle, find that traditional wide-angle linear contact lay is not optimal design, so we carry out the angle of this linear contact lay of optimum choice by orthogonal test, redesign and a kind ofly can eliminate inter-lobe clearance and reduce the briquetting assembly of friction force, tooth bar friction force is reduced to minimum object to reach, concrete decoupling zero event of the present utility model is as described below:
Can inter-lobe clearance be eliminated and reduce the briquetting assembly of friction force, comprising interior pitch wheel and the tooth bar of rack and pinion steering gear, it is characterized in that:
Its side of described tooth bar and gear are the engagement of mutual vertical configuration, and the opposite side of tooth bar is then near the intrados of the briquetting assembly of a double cabochon;
The extrados of the briquetting assembly of described double cabochon is connected with a Compress Spring, and the predetermincd tension of Compress Spring is passed to briquetting assembly, makes tooth bar pressed toward gear.
A kind ofly can eliminate inter-lobe clearance according to of the present utility model and reduce the briquetting assembly of friction force, it is characterized in that, the briquetting assembly of described double cabochon its be specifically made up of upper cambered surface briquetting, lower camber side briquetting and spring fastenings, wherein go up cambered surface briquetting all equal with the curved angle of lower camber side briquetting, be 70 ° ~ 85 °, spring fastenings is fixedly installed on the extrados of the junction of cambered surface briquetting and lower camber side briquetting.
A kind ofly can eliminate inter-lobe clearance according to of the present utility model and reduce the briquetting assembly of friction force, it is characterized in that, the thickness of the lower camber side briquetting of described upper cambered surface briquetting is equal, is 1.5 ~ 2.5mm.
A kind ofly can eliminate inter-lobe clearance according to of the present utility model and reduce the briquetting assembly of friction force, it is characterized in that, described spring fastenings its be specially a cylindrical component, one end of Compress Spring is socketed on the spring fastenings of this cylindrical component type.
Above-mentioned design goal is, the predetermincd tension of Compress Spring passes through the briquetting assembly A of double cabochon by tooth bar pressed toward gear firmly.And after gear, tooth bar normal wear produce certain interval, can be eliminated by this elimination inter-lobe clearance of the briquetting assembly mechanism of double cabochon.
And the briquetting assembly of the utility model major design main points-double cabochon, it is according to physical theorem, tooth bar friction force F=μ * F
f, wherein μ is friction coefficient, F
ffor the normal direction contact force between tooth bar and briquetting assembly.In addition, if the predetermincd tension of Compress Spring is Fp, F
f=Fp/cos β, the β in formula are the curved angle of upper cambered surface briquetting of the present utility model and lower camber side briquetting, so, F=μ * F
p/ cos β.Can finding out, tooth bar friction force F can be reduced by adopting the briquetting total performance of double cabochon.
And change angle beta and only need to adjust the upper cambered surface briquetting of briquetting assembly of double cabochon and the cambered design of lower camber side briquetting, the briquetting assembly of double cabochon of the present utility model can be chosen 70 ° ~ 85 ° adjustments, can not cause negative effect to cost of parts.
Use and of the present utility modelly a kind ofly can eliminate inter-lobe clearance and the briquetting assembly reducing friction force obtains following beneficial effect:
1. of the present utility modelly a kind ofly can eliminate inter-lobe clearance and reduce the briquetting assembly of friction force, by the briquetting assembly of the double cabochon of its design, tooth bar is reduced in W/S situation with the friction force of gear, whole deflector is worn and torn reduce, part life improves;
2. of the present utility modelly a kind ofly can eliminate inter-lobe clearance and reduce the briquetting assembly of friction force, suitable linear contact lay angle is obtained by orthogonal test, curved angle is adjustable, while being applicable to various rack and pinion steering gear, the friction force of tooth bar is reduced, and negative effect can not be caused to cost of parts.
Accompanying drawing explanation
Fig. 1 of the present utility modelly a kind ofly can eliminate inter-lobe clearance and reduce the concrete structure schematic diagram of the briquetting assembly of friction force
Fig. 2 installs additional of the present utility modelly a kind ofly can eliminate inter-lobe clearance and reduce the concrete structure schematic diagram of the rack and pinion steering gear of the briquetting assembly of friction force.
In figure: 1-gear, 2-tooth bar, 3-Compress Spring, the briquetting assembly of A-double cabochon, the upper cambered surface briquetting of A1-, A2-lower camber side briquetting, A3-spring fastenings.
Detailed description of the invention
A kind ofly inter-lobe clearance can be eliminated and the briquetting assembly reducing friction force is further described to of the present utility model below in conjunction with drawings and Examples.
Embodiment
As depicted in figs. 1 and 2, a kind ofly can eliminate inter-lobe clearance and reduce the briquetting assembly of friction force, comprising interior pitch wheel 1 and the tooth bar 2 of rack and pinion steering gear, it is characterized in that:
Described its side of tooth bar 2 and the engagement of gear 1 in mutual vertical configuration, the opposite side of tooth bar is then near the intrados of the briquetting assembly A of a double cabochon;
The extrados of the briquetting assembly A of described double cabochon is connected with a Compress Spring 3, and the predetermincd tension of Compress Spring is passed to briquetting assembly, makes tooth bar 2 pressed toward gear 1.
The briquetting assembly A of double cabochon is specifically made up of it upper cambered surface briquetting A1, lower camber side briquetting A2 and spring fastenings A3, wherein go up cambered surface briquetting all equal with the curved angle of lower camber side briquetting, be 70 ° ~ 85 ° (in the present embodiment being 80 °), spring fastenings is fixedly installed on the extrados of the junction of cambered surface briquetting and lower camber side briquetting.
The thickness of the lower camber side briquetting A2 of upper cambered surface briquetting A1 is equal, is 1.5 ~ 2.5mm (in the present embodiment, thickness is 1.5mm).
Spring fastenings A3 its be specially a cylindrical component, one end of Compress Spring 3 is socketed on the spring fastenings of this cylindrical component type.
Of the present utility modelly a kind ofly can eliminate inter-lobe clearance and to reduce the concrete implementation result of the briquetting assembly of friction force as follows:
The predetermincd tension of Compress Spring A3 passes through the briquetting assembly A of double cabochon by tooth bar pressed toward gear firmly.After gear, tooth bar normal wear produce certain interval, can be eliminated by this elimination inter-lobe clearance of the briquetting assembly mechanism of double cabochon.
And the briquetting assembly of the utility model major design main points-double cabochon, it is according to physical theorem, tooth bar friction force F=μ * F
f, wherein μ is friction coefficient, F
ffor the normal direction contact force between tooth bar and briquetting assembly.In addition, if the predetermincd tension of Compress Spring is Fp, F
f=Fp/cos β, the β in formula are the curved angle of upper cambered surface briquetting of the present utility model and lower camber side briquetting, so, F=μ * F
p/ cos β.Can finding out, tooth bar friction force F can be reduced by adopting the briquetting total performance of double cabochon.
And change angle beta and only need to adjust the upper cambered surface briquetting of briquetting assembly of double cabochon and the cambered design of lower camber side briquetting, the briquetting assembly of double cabochon of the present utility model can be chosen 70 ° ~ 85 ° adjustments, can not cause negative effect to cost of parts.
Of the present utility modelly a kind ofly can eliminate inter-lobe clearance and reduce the briquetting assembly of friction force, by the briquetting assembly of the double cabochon of its design, tooth bar is reduced in W/S situation with the friction force of gear, whole deflector is worn and torn reduce, part life improves, the utility model obtains suitable linear contact lay angle by orthogonal test, curved angle is adjustable, while being applicable to various rack and pinion steering gear, the friction force of tooth bar is reduced, and negative effect can not be caused to cost of parts.Gap between its rack-and-gear of elimination that the utility model is applicable to various rack and pinion steering gear and reduce the field of friction force.
Claims (4)
1. can eliminate inter-lobe clearance and reduce the briquetting assembly of friction force, comprising interior pitch wheel (1) and the tooth bar (2) of rack and pinion steering gear, it is characterized in that:
Described tooth bar (2) its side and the engagement of gear (1) in mutual vertical configuration, the opposite side of tooth bar is then near the intrados of the briquetting assembly (A) of a double cabochon;
The extrados of the briquetting assembly (A) of described double cabochon is connected with a Compress Spring (3), and the predetermincd tension of Compress Spring is passed to briquetting assembly, makes tooth bar (2) pressed toward gear (1).
2. a kind ofly can eliminate inter-lobe clearance and reduce the briquetting assembly of friction force as claimed in claim 1, it is characterized in that, the briquetting assembly (A) of described double cabochon its be specifically made up of upper cambered surface briquetting (A1), lower camber side briquetting (A2) and spring fastenings (A3), wherein go up cambered surface briquetting all equal with the curved angle of lower camber side briquetting, be 70 ° ~ 85 °, spring fastenings is fixedly installed on the extrados of the junction of cambered surface briquetting and lower camber side briquetting.
3. a kind ofly can eliminate inter-lobe clearance and reduce the briquetting assembly of friction force as claimed in claim 2, it is characterized in that, the thickness of the lower camber side briquetting (A2) of described upper cambered surface briquetting (A1) is equal, is 1.5 ~ 2.5mm.
4. a kind ofly can eliminate inter-lobe clearance and reduce the briquetting assembly of friction force as claimed in claim 2, it is characterized in that, described spring fastenings (A3) its be specially a cylindrical component, one end of Compress Spring (3) is socketed on the spring fastenings of this cylindrical component type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420462889.0U CN204161441U (en) | 2014-08-15 | 2014-08-15 | A kind ofly can eliminate inter-lobe clearance and reduce the briquetting assembly of friction force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420462889.0U CN204161441U (en) | 2014-08-15 | 2014-08-15 | A kind ofly can eliminate inter-lobe clearance and reduce the briquetting assembly of friction force |
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| Publication Number | Publication Date |
|---|---|
| CN204161441U true CN204161441U (en) | 2015-02-18 |
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|---|---|---|---|
| CN201420462889.0U Expired - Fee Related CN204161441U (en) | 2014-08-15 | 2014-08-15 | A kind ofly can eliminate inter-lobe clearance and reduce the briquetting assembly of friction force |
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| CN (1) | CN204161441U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108423061A (en) * | 2018-04-24 | 2018-08-21 | 联禾厚普（太仓）精密机械有限公司 | A kind of turning machine friction control component |
| CN114060485A (en) * | 2021-11-08 | 2022-02-18 | 中汽创智科技有限公司 | Clearance adjusting device and rack and pinion steering gear |
-
2014
- 2014-08-15 CN CN201420462889.0U patent/CN204161441U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108423061A (en) * | 2018-04-24 | 2018-08-21 | 联禾厚普（太仓）精密机械有限公司 | A kind of turning machine friction control component |
| CN114060485A (en) * | 2021-11-08 | 2022-02-18 | 中汽创智科技有限公司 | Clearance adjusting device and rack and pinion steering gear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201821 Shanghai Jiading District City Yongsheng Road No. 2001 Patentee after: BOSCH HUAYU STEERING SYSTEMS Co.,Ltd. Address before: 201821 Shanghai Jiading District City Yongsheng Road No. 2001 Patentee before: ZF SHANGHAI STEERING SYSTEMS Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150218 Termination date: 20210815 |
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| CF01 | Termination of patent right due to non-payment of annual fee |