CN108644352A - Electric steering gear turbine worm clearance compensation mechanism - Google Patents
Electric steering gear turbine worm clearance compensation mechanism Download PDFInfo
- Publication number
- CN108644352A CN108644352A CN201810394295.3A CN201810394295A CN108644352A CN 108644352 A CN108644352 A CN 108644352A CN 201810394295 A CN201810394295 A CN 201810394295A CN 108644352 A CN108644352 A CN 108644352A
- Authority
- CN
- China
- Prior art keywords
- worm
- plunger
- briquetting
- varying device
- gear
- 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.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 title abstract description 10
- 239000011148 porous material Substances 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 230000002159 abnormal effect Effects 0.000 abstract description 7
- 230000003139 buffering effect Effects 0.000 abstract 1
- 238000005299 abrasion Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 208000005358 Tooth Attrition Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 210000004209 hair Anatomy 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/22—Toothed members; Worms for transmissions with crossing shafts, especially worms, worm-gears
- F16H55/24—Special devices for taking up backlash
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0442—Conversion of rotational into longitudinal movement
- B62D5/0454—Worm gears
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Gear Transmission (AREA)
Abstract
The invention discloses a clearance compensation mechanism for a worm and gear of an electric steering gear, wherein the electric steering gear comprises a shell and a worm arranged in the shell, a bearing is arranged at the end part of the worm in the shell corresponding to the clearance compensation mechanism, the clearance compensation mechanism comprises a plunger and a pressing block, an opening hole is arranged on the shell corresponding to the bearing at the end part, the plunger is in threaded fit with the opening hole, and the pressing block is arranged between the bearing and the plunger. The electric steering gear worm and gear clearance compensation mechanism is reasonable in structural design, and the assembly clearance between the worm and gear can be adjusted during assembly; the vehicle uses for a long time, and the worm gear worm produces wearing and tearing, and fit clearance can obtain the compensation, improves because electric steering ware leads to fit clearance increase because of using wearing and tearing for a long time, therefore the vehicle is in the problem of the abnormal sound that jolt road produced when going, and buffering impact increases and turns to travelling comfort and reliability.
Description
Technical field
The present invention relates to electric direction varying device technical fields, more particularly, to a kind of electric direction varying device turbine and worm backlash compensation
Mechanism.
Background technology
With the advantage that Environmental and the control dynamics of oil consumption increase and electric powered steering itself controls, more
Carry out more vehicles and use electric boosting steering system, and with the development of electric powered steering technology, electric boosted range also by
Step increases, and from initial low-power brush motor, high power brushless motor power-assisted, assist type also develop into tubing string power-assisted till now
Formula, pinion gear assisted electric redirector and rack assisted electric redirector.
Gear assisted electric redirector is a kind of current electric power steering commonly boosting mechanism form, and being will be electric
The torque of machine output, is slowed down by turbine and worm and increases the effect of square, assist torque is passed to rack of steering, to band
Dynamic steered wheel rotation, forms full-vehicle steering function.
After vehicle long-time use, because of relative motion between each parts of gear assisted electric redirector, especially
It is turbine and worm, cooperation is close, and transmits larger assist torque, abrasion is easy tod produce, after abrasion, it is easy to abnormal sound is generated,
The performance that steering can even be reduced is one of the principal element for influencing steering gear performance and leading to abnormal sound.This fit clearance
Increase can also influence the driver comfort of driver while influencing vehicle performance, influence driver to vehicle security
Misgivings.
As shown in figure 3, gapless compensation mechanism between current gear assisted electric redirector turbine and worm, usually passes through
It controls its turbine and worm centre-to-centre spacing and classification matching is carried out to turbine and worm, to control between the cooperation between turbine and worm screw
Gap, installation clearance control are cumbersome.
When driver's driving passes through bumpy road, rack is by the impact force for coming from ground, then rack meeting
The gear that the impact force is passed to cooperation, due to being rigid connection between gear and turbine, thus turbine is received from ground
The impact in face, due to the matching relationship between turbine and worm, worm screw is similarly subjected to the impact, and comfort is poor.Using initial stage, whirlpool
Worm and gear cooperation is close, and no abrasion condition generates, therefore not will produce apparent collision abnormal sound；But after vehicle long-time use,
It interacts between turbine and worm screw, generates abrasion, fit clearance increases, and when being impacted by bumpy road, easily generates abnormal sound.
Invention content
In view of the shortcomings of the prior art, technical problem to be solved by the invention is to provide a kind of electric direction varying device turbine and worms
Rocker compensating gear, to achieve the purpose that gap between adjustable turbine and worm.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is：
The electric direction varying device turbine and worm rocker compensating gear, the electric direction varying device include shell and are located in shell
Worm screw, the end that worm screw is corresponded in shell are equipped with bearing, and the rocker compensating gear includes plunger and briquetting, right on the shell
End bearing is answered to be equipped with open pore, with open pore by screw-thread fit, the briquetting is located between bearing and plunger the plunger.
Further, the open pore is round hole, and plunger is equipped with externally threaded circular cylinder.
The one end of the briquetting is equipped with arc groove compatible with bearing outer rim.
One end of the worm screw is connected by shaft coupling with the motor of steering gear, and the other end that briquetting corresponds to worm screw is set
It sets.
Sealing ring is equipped between the briquetting and the hole wall of open pore.
Elastic element is equipped between the inner end of the plunger and the outer end of briquetting.
The outer end of the plunger is equipped with the groove convenient for rotation process.
The arcuate recess surface of the briquetting is equipped with wearing layer.
The elastic element is helical spring.
The inner end of the plunger and/or the outer end of briquetting are equipped with the locating slot for being positioned to elastic element end.
Compared with prior art, the present invention haing the following advantages：
The electric direction varying device turbine and worm rocker compensating gear is reasonable in design, when assembly between adjustable turbine and worm
Fit-up gap；Vehicle uses for a long time, and turbine and worm generates abrasion, and fit clearance can be compensated, and improves due to electric rotating
To device because long-time is using abrasion, fit clearance is caused to increase, thus vehicle is the abnormal sound that bumpy road generates when driving the problem of,
Shock absorbing increases and turns to comfort and reliability.
Description of the drawings
The content expressed by each width attached drawing of this specification and the label in figure are briefly described below：
Fig. 1 is electric direction varying device structural schematic diagram of the present invention.
Fig. 2 is compensation mechanism structural schematic diagram of the present invention.
Fig. 3 is existing electric direction varying device structural schematic diagram.
In figure：
1. end ring, 2. bearings, 3. worm screws, 4. shells, 5. turbines, 6. output gears, 7. shaft couplings, 8. motors, 9.
Briquetting, 10.O types circle, 11. plungers, 12. elastic elements.
Specific implementation mode
Below against attached drawing, by the description of the embodiment, making to the specific implementation mode of the present invention further details of
Explanation.
As depicted in figs. 1 and 2, the electric direction varying device turbine and worm rocker compensating gear is reasonable in design, and when assembly can
Adjust the fit-up gap between turbine and worm；Vehicle uses for a long time, and turbine and worm generates abrasion, and fit clearance can be mended
Repay, improve due to electric direction varying device because long-time using abrasion, cause fit clearance to increase, thus vehicle bumpy road when driving
The problem of abnormal sound of generation, shock absorbing increase and turn to comfort and reliability.
Worm screw 3, turbine 5, shaft coupling 7 and the motor 8 that electric direction varying device includes shell 4, is located in shell 4, worm screw and
Turbine coordinates, and turbine is connected with output gear 6, and the both ends of correspondence worm screw are equipped with bearing 2 and end ring 1, and the one of worm screw
End is connected by shaft coupling 7 with the motor of steering gear, and the other end of corresponding worm screw 3 is equipped with rocker compensating gear.
Rocker compensating gear includes plunger 11 and briquetting 9, and corresponding end bearing is equipped with open pore on shell 4, plunger 11 with
Open pore is located at by screw-thread fit, briquetting 9 between bearing and plunger, and elasticity is equipped between the inner end of plunger and the outer end of briquetting
Element 12.
Open pore is round hole, and plunger is equipped with externally threaded circular cylinder, and the outer end of plunger 11 is equipped with convenient for rotation behaviour
The groove of work.
Briquetting 9 corresponds to the other end bearing setting of worm screw, and the one end of briquetting is equipped with arc compatible with bearing outer rim
Connected in star, support is reliable, and is equipped with wearing layer in the arcuate recess surface of briquetting.
Sealing ring is equipped between briquetting 9 and the hole wall of open pore, sealing ring is the O-ring 10 being located in briquetting outer rim.Pressure
Sealing ring is equipped at the outer end of block and the inner end cooperation of plunger.
Elastic element 12 is helical spring, and compare other elastic elements, at low cost, and level of application is high, and arrangement is simple easy
Implement.The inner end of plunger and/or the outer end of briquetting are equipped with the locating slot for being positioned to elastic element end.
This gap adjusts structure, and briquetting acts on bearing, and under the pressure of elastic element, by briquetting worm screw
It is pressed on turbine, while also can be by adjusting the screw-in depth of plunger, to adjust the pressing force of elastic element, to reach suitable
Turbine and worm fit clearance demand.
This assembling structure, worm screw one end are connect by shaft coupling with motor output shaft, and assemble bearing at both ends, and indentation is outer
Shell, turbine coordinate with output gear shaft, are press fit together, are then fitted into shell first, coordinate with worm screw.In worm screw one end
It is open at bearing, briquetting is fitted into shell, is fitted close with bearing, and briquetting matching surface carries out wear-resistingization processing,
To increase its wearability, surface roughness is improved.Briquetting is withstood in elastic element one end, compresses worm screw using briquetting, compensates turbine
Worm screw gap；The other end coordinates with plunger, and plunger screws in shell, compresses elastic element, can be according to each different exemplar, to adjust
Whole different pressing force, to adapt to different use conditions.
Initial stage is used in vehicle, due to the clearance adjustment mechanism, in assembly, gap adjustment can be easily achieved, met
Turbine and worm cooperation requires.And after vehicle long-time use, since turbine and worm matches occlusal wear, automobile passes through bumpy road
When, steering gear rack is impacted, which passes to pinion gear by rack, then passes to turbine.If compensation very close to each other,
Since turbine and worm is worn, gap increases, and coordinates looseness, is impacted, and generates noise.Increase the backlash compensation, gap wear
It is compensated, is travelled in bumpy road, noise problem is improved.
It above are only and preferred embodiments of the present invention are illustrated, above-mentioned technical characteristic can form multiple hairs in any combination
Bright example scheme.
The present invention is exemplarily described above in conjunction with attached drawing, it is clear that the present invention implements not by aforesaid way
Limitation, as long as use the present invention design and technical solution carry out various unsubstantialities improvement, or it is not improved will
The design and technical solution of the present invention directly applies to other occasions, within protection scope of the present invention.
Claims (10)
1. a kind of electric direction varying device turbine and worm rocker compensating gear, the electric direction varying device includes shell and is located in shell
Worm screw, the end that worm screw is corresponded in shell are equipped with bearing, it is characterised in that：The rocker compensating gear includes plunger and briquetting,
Corresponding end bearing is equipped with open pore on the shell, and for the plunger with open pore by screw-thread fit, the briquetting is located at axis
It holds between plunger.
2. electric direction varying device turbine and worm rocker compensating gear as described in claim 1, it is characterised in that：The open pore is circle
Shape hole, plunger are equipped with externally threaded circular cylinder.
3. electric direction varying device turbine and worm rocker compensating gear as described in claim 1, it is characterised in that：One end of the briquetting
Portion is equipped with arc groove compatible with bearing outer rim.
4. electric direction varying device turbine and worm rocker compensating gear as described in claim 1, it is characterised in that：One end of the worm screw
It is connected with the motor of steering gear by shaft coupling, briquetting corresponds to the other end setting of worm screw.
5. electric direction varying device turbine and worm rocker compensating gear as described in claim 1, it is characterised in that：The briquetting and opening
Sealing ring is equipped between the hole wall in hole.
6. electric direction varying device turbine and worm rocker compensating gear as described in claim 1, it is characterised in that：The inner end of the plunger
Elastic element is equipped between the outer end of briquetting.
7. electric direction varying device turbine and worm rocker compensating gear as described in claim 1, it is characterised in that：The outer end of the plunger
Equipped with the groove convenient for rotation process.
8. electric direction varying device turbine and worm rocker compensating gear as claimed in claim 3, it is characterised in that：The arc of the briquetting
Groove surfaces are equipped with wearing layer.
9. electric direction varying device turbine and worm rocker compensating gear as claimed in claim 6, it is characterised in that：The elastic element is
Helical spring.
10. electric direction varying device turbine and worm rocker compensating gear as claimed in claim 6, it is characterised in that：The plunger it is interior
End and/or the outer end of briquetting are equipped with the locating slot for being positioned to elastic element end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810394295.3A CN108644352A (en) | 2018-04-27 | 2018-04-27 | Electric steering gear turbine worm clearance compensation mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810394295.3A CN108644352A (en) | 2018-04-27 | 2018-04-27 | Electric steering gear turbine worm clearance compensation mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108644352A true CN108644352A (en) | 2018-10-12 |
Family
ID=63747982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810394295.3A Pending CN108644352A (en) | 2018-04-27 | 2018-04-27 | Electric steering gear turbine worm clearance compensation mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108644352A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020147174A1 (en) * | 2019-01-17 | 2020-07-23 | 广州市昊志机电股份有限公司 | Dual-worm anti-backlash structure having extended service life |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102765418A (en) * | 2011-05-06 | 2012-11-07 | 豫北(新乡)汽车动力转向器有限公司 | Automatic clearance adjusting mechanism for worm and gear of automobile electric power steering gear |
| CN204041878U (en) * | 2014-06-30 | 2014-12-24 | 长城汽车股份有限公司 | Worm-and-wheel gear and vehicle |
| CN104417602A (en) * | 2013-08-27 | 2015-03-18 | 株式会社万都 | Reducer Of Electric Power Steering Apparatus |
| KR20160064817A (en) * | 2014-11-28 | 2016-06-08 | 현대모비스 주식회사 | Motor driven power steering |
| CN105782402A (en) * | 2015-01-12 | 2016-07-20 | 株式会社万都 | Automobile reducer |
-
2018
- 2018-04-27 CN CN201810394295.3A patent/CN108644352A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102765418A (en) * | 2011-05-06 | 2012-11-07 | 豫北(新乡)汽车动力转向器有限公司 | Automatic clearance adjusting mechanism for worm and gear of automobile electric power steering gear |
| CN104417602A (en) * | 2013-08-27 | 2015-03-18 | 株式会社万都 | Reducer Of Electric Power Steering Apparatus |
| CN204041878U (en) * | 2014-06-30 | 2014-12-24 | 长城汽车股份有限公司 | Worm-and-wheel gear and vehicle |
| KR20160064817A (en) * | 2014-11-28 | 2016-06-08 | 현대모비스 주식회사 | Motor driven power steering |
| CN105782402A (en) * | 2015-01-12 | 2016-07-20 | 株式会社万都 | Automobile reducer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020147174A1 (en) * | 2019-01-17 | 2020-07-23 | 广州市昊志机电股份有限公司 | Dual-worm anti-backlash structure having extended service life |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181012 |
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| RJ01 | Rejection of invention patent application after publication |