CN2070702U - Rack pitch-changing type transmission ratio-changing steering gear transmission device - Google Patents
Rack pitch-changing type transmission ratio-changing steering gear transmission device Download PDFInfo
- Publication number
- CN2070702U CN2070702U CN 90210410 CN90210410U CN2070702U CN 2070702 U CN2070702 U CN 2070702U CN 90210410 CN90210410 CN 90210410 CN 90210410 U CN90210410 U CN 90210410U CN 2070702 U CN2070702 U CN 2070702U
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- China
- Prior art keywords
- tooth
- rack
- steering gear
- changing
- tooth bar
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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.)
- Pending
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- 230000005540 biological transmission Effects 0.000 title abstract 5
- 230000003028 elevating effect Effects 0.000 claims description 20
- 230000003134 recirculating effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses a rack becomes pitch line formula variable ratio steering gear transmission, this transmission adopt standard sector gear and become the meshing of pitch line rack, become the profile of tooth broad in the middle of the pitch line rack, and the profile of tooth of avris is narrower, so its pitch circle diameter is changeable. When the standard sector gear is engaged with the pitch line-variable rack, the change of the transmission ratio can be realized.
Description
The utility model relates to a kind of automobile steering device driving device, particularly a kind of tooth bar line formula steering gear with variable ration driving device of switching political loyalty.
The deflector driving device is to the performance important influence of automobile steering device.In order to make automobile obtain good manipulation portability and manoevreability, require deflector to have the transmitting ratio of change.When automobile travels at high-speed straight-line, must have higher manoevreability and " road feel " preferably, thereby require the transmitting ratio of deflector little, when automobile turning, the general speed of a motor vehicle is lower, mainly is to overcome bigger cornering resistance, thereby requires the transmitting ratio of deflector to want big again.The recirculating ball rack tooth fan deflector of automobile employing in the past substantially all is to wait the transmitting ratio structure, has the sector wheel and rack engagement of standard module and angle of obliquity that is:, and its transmitting ratio is fixed, and can not satisfy the requirement that transmitting ratio changes.In recent years, China develops the recirculating ball rack tooth fan formula steering gear with variable ration of two kinds of versions in succession, a kind of for switch political loyalty circle elevating arc and basic rack mesh, another kind is similar two non-circular gears engagement, now is the former for what the deflector industry extensively adopted.The circle elevating arc need be processed with expensive special-purpose gear shifting machine or digital control gear shaper owing to switch political loyalty, make more domestic deflector originating firms can't produce so far, produced the producer of switch political loyalty circle elevating arc and the deflector of basic rack engaging structure, also, make productive capacity be difficult to improve because of lathe production efficiency is low.
The purpose of this utility model provides the traitorous line formula steering gear with variable ration driving device of a kind of improved tooth bar, and it can simplify the deflector processing technology, and productive capacity is improved.
The purpose of this utility model is achieved in that employing standard elevating arc and the engagement of traitorous line tooth bar, and the profile of tooth of each tooth of elevating arc is identical, and the nodel line of the each point of tooth bar then requires to present corresponding variation according to the transmitting ratio variation of deflector.
The utility model is because adopt the standard elevating arc and the engagement of traitorous line tooth bar, thereby the processing emphasis can be turned to the traitorous line tooth bar that is easy to process from unmanageable traitorous round elevating arc, so just can be on general hobbing machine the Processing Criterion elevating arc, thereby enhance productivity greatly.
Concrete structure of the present utility model is provided by following examples and accompanying drawing thereof:
Fig. 1 is switch political loyalty circle elevating arc and basic rack engagement scheme drawing.
Fig. 2 is switch political loyalty line tooth bar and standard elevating arc engagement scheme drawing.
Fig. 3 is standard elevating arc and the engagement scheme drawing of traitorous line tooth bar when the tooth bar midway location.
Fig. 4 is standard elevating arc and the engagement scheme drawing of traitorous line tooth bar when tooth bar one side position.
Below in conjunction with details and the service condition of accompanying drawing detailed description according to the concrete device that the utility model proposes.
As shown in drawings: a among the figure is a basic rack, and b is the circle elevating arc of switching political loyalty, and the profile of tooth of each tooth of tooth bar is all identical, and the profile of tooth of each tooth of the circle elevating arc of switching political loyalty is different, the center tooth broad, and the tooth of both sides is narrower.
A ' among Fig. 2 is the line tooth bar of switching political loyalty, and b ' is the standard elevating arc, and the profile of tooth of each tooth of standard elevating arc is identical, and each tooth of the line tooth bar a ' that switches political loyalty is different.Center tooth 1 profile of tooth broad, avris tooth 2 profiles of tooth are narrower.
Realize the principle that steering gear ratio changes, by Fig. 3 and Fig. 4 explanation.
When the standard elevating arc is in when switching political loyalty line tooth bar midway location, diminish among its pitch circle diameter R, and the tooth bar angle of obliquity of this point also diminishes, when the standard elevating arc is in when switching political loyalty line tooth bar one side, the point of engagement of this moment are outside reference circle, be that pitch circle diameter R side becomes greatly, and the angle of obliquity at this place also becomes big, point of engagement 3 and 4 among comparison diagram 3 and Fig. 4, the nodel line that also can find each point of tooth bar changes, change requirement according to steering gear ratio, nodel line can be the curve of definite shape, thereby has realized the variation of transmitting ratio.
Claims (2)
1, a kind of tooth bar line formula steering gear with variable ration driving device of switching political loyalty is made up of tooth bar and elevating arc, it is characterized in that the profile of tooth of each tooth of elevating arc is identical, and the nodel line of each point of tooth bar changes.
2, device according to claim 1 it is characterized in that the profile of tooth broad at tooth bar middle part, and the profile of tooth of avris is narrower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90210410 CN2070702U (en) | 1990-04-20 | 1990-04-20 | Rack pitch-changing type transmission ratio-changing steering gear transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90210410 CN2070702U (en) | 1990-04-20 | 1990-04-20 | Rack pitch-changing type transmission ratio-changing steering gear transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2070702U true CN2070702U (en) | 1991-02-06 |
Family
ID=4890322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90210410 Pending CN2070702U (en) | 1990-04-20 | 1990-04-20 | Rack pitch-changing type transmission ratio-changing steering gear transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2070702U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089953A (en) * | 2013-01-29 | 2013-05-08 | 重庆大学 | Line defect cycloidal gear transmission device |
| CN104401387A (en) * | 2014-10-29 | 2015-03-11 | 杭州世宝汽车方向机有限公司 | Variable ratio rack and power steering gear |
| CN104776183A (en) * | 2014-01-14 | 2015-07-15 | 本田技研工业株式会社 | Continuously variable transmission |
| CN105730500A (en) * | 2016-02-03 | 2016-07-06 | 程雪娇 | Steering gear for motor vehicle |
| CN106327964A (en) * | 2016-08-24 | 2017-01-11 | 合肥凌翔信息科技有限公司 | Teaching experiment trolley tracking system |
-
1990
- 1990-04-20 CN CN 90210410 patent/CN2070702U/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089953A (en) * | 2013-01-29 | 2013-05-08 | 重庆大学 | Line defect cycloidal gear transmission device |
| CN103089953B (en) * | 2013-01-29 | 2015-07-01 | 重庆大学 | Line defect cycloidal gear transmission device |
| CN104776183A (en) * | 2014-01-14 | 2015-07-15 | 本田技研工业株式会社 | Continuously variable transmission |
| CN104401387A (en) * | 2014-10-29 | 2015-03-11 | 杭州世宝汽车方向机有限公司 | Variable ratio rack and power steering gear |
| CN105730500A (en) * | 2016-02-03 | 2016-07-06 | 程雪娇 | Steering gear for motor vehicle |
| CN106327964A (en) * | 2016-08-24 | 2017-01-11 | 合肥凌翔信息科技有限公司 | Teaching experiment trolley tracking system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |