CN107416015A - A kind of gap of worm dynamic collocation structure - Google Patents
A kind of gap of worm dynamic collocation structure Download PDFInfo
- Publication number
- CN107416015A CN107416015A CN201710293009.XA CN201710293009A CN107416015A CN 107416015 A CN107416015 A CN 107416015A CN 201710293009 A CN201710293009 A CN 201710293009A CN 107416015 A CN107416015 A CN 107416015A
- Authority
- CN
- China
- Prior art keywords
- worm
- housing
- distal end
- mounting hole
- motor
- 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.)
- Withdrawn
Links
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D3/00—Steering gears
- B62D3/02—Steering gears mechanical
- B62D3/04—Steering gears mechanical of worm type
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Gear Transmission (AREA)
- Gears, Cams (AREA)
Abstract
The present invention relates to a kind of gap of worm dynamic collocation structure, including housing, worm and worm wheel；In the housing near-end mounting hole is provided with close to the position of motor, distal end mounting hole is provided with position of the housing away from motor, the worm screw is connected close to one end of motor by the near-end mounting hole on near-end worm bearing and the housing；A composite shaft bearing sleeve is provided with the distal end mounting hole of the housing, the one end of the worm screw away from motor is connected with distal end worm bearing, and the composite shaft bearing sleeve of the distal end worm bearing and the distal end mounting hole is connected；The worm screw engages with the worm gear being located in the housing.The present invention can compensate the gap between worm and gear automatically, to avoid improving user experience and travel safety because of the phenomenon for producing back lash between worm and gear caused by size, abrasion or moisture absorption etc. between worm and gear.
Description
Technical field
The present invention relates to a kind of automobile steering system, and in particular to a kind of worm gear for automobile electric booster steering system
Worm screw gap dynamic collocation structure.
Background technology
Electric boosting steering system is more and more applied to Hyundai Motor, as people are required increasingly automotive quality
Height, turn to noise and be increasingly becoming one of consumer's focus of attention.Electric boosting steering system is driven by motor, compared to tradition
Hydraulic booster system, non-hydraulic system, thus steering hydraulic noise is not present, but the worm gear in its turbine and worm decelerator
Material typically use nylon alloy, this nylon alloy have self-lubricating and it is wear-resisting the advantages of, but by temperature and air humidity
Have a great influence, cause gap of worm to be varied widely with external environment change, produce gearing noise and commutation therewith
Noise, the user experience of Hyundai Motor is reduced, serious can also affect on manipulation sense, jeopardize traffic safety.
CN104176113A is disclosed " a kind of gap of worm eliminating machine ".The gap of worm eliminating machine include housing,
Worm gear and worm screw, locking nut, the first back-up ring, the second back-up ring, end cap, clutch shaft bearing and second bearing, wherein the first back-up ring and
Locking nut fixes clutch shaft bearing, and the first flexible member that thrust is produced along the axial direction of worm screw is provided with clutch shaft bearing
7, while end cap and the second back-up ring fix second bearing, and the axially and radially generation pressure along worm screw is provided with second bearing
Second flexible member 12 of clamp force.It can eliminate worm and gear radial direction back lash and meshing backlass simultaneously, and can have
Effect reduces motor turning noise, lifting vehicle handling stability.Certainly, this is that a kind of beneficial of art is tasted
Examination.
The content of the invention
It is an object of the invention to provide a kind of gap of worm dynamic collocation structure, and it can compensate worm and gear automatically
Between gap, to avoid between worm and gear between engagement is produced between worm and gear caused by size, abrasion or moisture absorption etc.
The phenomenon of gap, improve user experience and travel safety.
A kind of gap of worm dynamic collocation structure of the present invention, including housing, worm and worm wheel；In the shell
Body is provided with near-end mounting hole close to the position of motor, and being provided with distal end at position of the housing away from motor installs
Hole, the worm screw are coordinated by the near-end mounting hole on near-end worm bearing and the housing close to one end of motor and connected
Connect；A composite shaft bearing sleeve, the one end of the worm screw away from motor and distal end are provided with the distal end mounting hole of the housing
Worm bearing is connected, and the composite shaft bearing sleeve of the distal end worm bearing and the distal end mounting hole is connected；The snail
Bar engages with the worm gear being located in the housing.
Further, the composite shaft bearing sleeve is made up of inner ring, outer ring and the elastic component that is located between inner ring and outer ring；Institute
The outer ring for stating inner ring and the distal end worm bearing coordinates, and the outer ring coordinates with the distal end mounting hole on the housing；It is described
The inner ring of composite shaft bearing sleeve and the axle center of outer ring are misaligned, and the worm gear side is inclined in the axle center of inner ring.
Further, the elastic component is a wavy spring, and the both ends of the wavy spring are straight, middle part crest highest
And gradually reduced to both ends, the inner side of the crest of the wavy spring and the outer ring is welded, the trough of the wavy spring with
The outside welding of the inner ring, the both ends of the wavy spring are close to the worm gear side.
Further, the elastic component is a polyurethane elastomer, and the polyurethane elastomer is a loop configuration, and interior
Circle is misaligned with the cylindrical center of circle, and the worm gear side is inclined in the center of circle of inner circle.
Beneficial effects of the present invention：As a result of composite shaft bearing sleeve, pass through the inner ring of composite shaft bearing sleeve, outer ring and elasticity
Component is combined dynamically to compensate the gap between worm and gear, and after the completion of assembling, the bearing holder (housing, cover) of eccentric structure can be to distal end worm screw
Bearing acts on the pretightning force in a sensing worm gear direction, and worm screw is pressed into worm gear, because the elastic force of elastic component acts on, pretightning force
Meeting dynamic self-adapting regulation with worm and gear motion state, so that worm and gear keeps closely nibbling in transmission process
Conjunction state.Impact of the worm bearing to bearing holder (housing, cover) in transmission process can be buffered simultaneously, so as to reduce worm gear snail in steering procedure
The gearing noise of bar reducing gear and commutation noise, improve user experience and travel safety.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is Fig. 1 A-A sectional views；
Fig. 3 is the structural representation of elastic component-wavy spring；
Fig. 4 is the schematic diagram of the elastic component selection polyurethane elastomer in the present invention.
In figure：1- housings, 11- near-ends mounting hole (i.e. close to motor), 12- distal ends mounting hole is (i.e. away from driving
Motor), 2- worm gears, 3- worm screws, 4- near-end worm bearings, 5- distal ends worm bearing, 6- composite shaft bearing sleeves, 61- inner rings,
62- outer rings, 63- elastic components.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
Referring to a kind of gap of worm dynamic collocation structure shown in Fig. 1 and Fig. 2, including housing 1, worm screw 2 and worm gear
3；Near-end mounting hole 11 is provided with close to the position of motor in the housing 1, at the position of the housing 1 away from motor
Provided with distal end mounting hole 12, the worm screw 2 passes through on near-end worm bearing 4 and the housing 1 close to one end of motor
Near-end mounting hole 11 is connected, it is characterized in that：A composite shaft bearing sleeve 6, institute are provided with the distal end mounting hole 12 of the housing 1
State the one end of worm screw 2 away from motor to be connected with distal end worm bearing 5, the distal end worm bearing 5 and the distal end
The composite shaft bearing sleeve 6 of mounting hole 12 is connected；The worm screw 2 engages with the worm gear 3 being located in the housing 1.Motor
Drive worm screw to rotate by shaft coupling, transfer torque on worm gear, drive worm gear wheel, so as to drive motorcar electric power-assisted to turn
Rotated to system.
The composite shaft bearing sleeve 6 is made up of inner ring 61, outer ring 62 and the elastic component 63 that is located between inner ring and outer ring；Institute
The outer ring for stating inner ring 61 and the distal end worm bearing 5 coordinates, and the outer ring 62 is matched somebody with somebody with the distal end mounting hole 12 on the housing 1
Close；
Embodiment one：Referring to Fig. 2 and Fig. 3, the elastic component 63 is a wavy spring, and the two of the wavy spring holds level with both hands
Directly, the crest highest at middle part and gradually reduced to both ends, the inner side of the crest of the wavy spring and the outer ring 62 is welded, institute
The outside of the trough and the inner ring 61 of stating wavy spring is welded, and the both ends of the wavy spring are close to the side of worm gear 3.
The crest of the wavy spring and trough amplitude are maximum in the side away from worm gear 3, are gradually reduced to both sides, by
The side of nearly worm gear 3, wavy spring are not distributed；The inner ring 61 of the composite shaft bearing sleeve 6 and the axle center of outer ring 62 are misaligned, and
It is inclined to the side of worm gear 3 in the axle center of inner ring 61.Due to the inner ring of composite shaft bearing sleeve and the eccentric setting of outer ring, assembling is completed
Afterwards, worm screw will be acted on the pretightning force for pressing to worm gear by wavy spring, and pretightning force ensure that tightly engaging for worm and worm wheel.
The inner side of the crest of the elastic component 63 and the outer ring 62 is welded, the trough of the elastic component 63 with it is described
The outside welding of inner ring 61.This is designed between the outer ring 62 for causing composite shaft bearing sleeve 6 and inner ring 61, has certain rigidity and bullet
Property, support and cushioning effect are played during worm and gear multi-state multi-load power transmission.
In the electric boosting steering system course of work, worm and worm wheel stress can occur frequently to change, worm screw and distal end
Worm bearing can occur slightly to swing, in swing process, the inner ring of composite shaft bearing sleeve can by a certain degree of impulsive force, due to
The elastic force effect of wavy spring, impulsive force can be absorbed, so as to reduce the impact that housing is subject to.In addition, wavy spring can also be held
It is continuous that thrust is applied to distal end worm bearing, the back lash of worm gear and worm screw is dynamically compensated in system work process.
Embodiment two：Referring to Fig. 4, the elastic component 63 is a polyurethane elastomer, and the polyurethane elastomer is one
Loop configuration, and inner circle and the cylindrical center of circle are misaligned, the side of worm gear 3 is inclined in the center of circle of inner circle.This example selects elastic structure
Part is polyurethane elastomer, it is easier to is implemented.
By above-mentioned mechanism, gap of worm dynamic collocation structure of the present invention can not only relax worm gear
Worm-drive is impacted, and can also dynamically compensate worm gear worm backlash, solve worm-and-wheel gear gearing noise well
With commutation noise problem, motor assist torque is obtained smooth transfer, and realize good NVH performances, improve user's body
Test sense.
The preferred embodiment to the invention is illustrated above, but the present invention is not limited to above-mentioned two
Embodiment, those skilled in the art can also make a variety of equivalent on the premise of without prejudice to the invention spirit
Modification or replacement, these equivalent modifications or replacement are all contained in scope of the present application.
Claims (4)
1. a kind of gap of worm dynamic collocation structure, including housing (1), worm screw (2) and worm gear (3)；In the housing (1)
Near-end mounting hole (11) is provided with close to the position of motor, distal end is provided with position of the housing (1) away from motor
Mounting hole (12), the worm screw (2) pass through on near-end worm bearing (4) and the housing (1) close to one end of motor
Near-end mounting hole (11) is connected, it is characterized in that：A composite bearing is provided with the distal end mounting hole (12) of the housing (1)
Cover (6), the one end of the worm screw (2) away from motor is connected with distal end worm bearing (5), the distal end worm bearing
(5) it is connected with the composite shaft bearing sleeve (6) in the distal end mounting hole (12)；The worm screw (2) is with being located at the housing (1)
Interior worm gear (3) engagement.
2. gap of worm dynamic collocation structure according to claim 1, it is characterized in that：The composite shaft bearing sleeve (6)
It is made up of inner ring (61), outer ring (62) and the elastic component (63) that is located between inner ring and outer ring；The inner ring (61) with it is described
The outer ring of distal end snail both ends rod bearing (5) coordinates, and the outer ring (62) is matched somebody with somebody with the distal end mounting hole (12) on the housing (1)
Close；The inner ring (61) of the composite shaft bearing sleeve (6) and the axle center of outer ring (62) are misaligned, and described in the axle center deviation of inner ring (61)
Worm gear (3) side.
3. gap of worm dynamic collocation structure according to claim 2, it is characterized in that：The elastic component (63) is
One wavy spring, the both ends of the wavy spring are straight, middle part crest highest and are gradually reduced to both ends, the wavy spring
The inner side of crest and the outer ring (62) weld, the outside of the trough of the wavy spring and the inner ring (61) is welded, institute
The both ends of wavy spring are stated close to the worm gear (3) side.
4. gap of worm dynamic collocation structure according to claim 2, it is characterized in that：The elastic component (63) is
One polyurethane elastomer, the polyurethane elastomer is a loop configuration, and inner circle and the cylindrical center of circle are misaligned, the circle of inner circle
The heart is inclined to worm gear (3) side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710293009.XA CN107416015A (en) | 2017-04-28 | 2017-04-28 | A kind of gap of worm dynamic collocation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710293009.XA CN107416015A (en) | 2017-04-28 | 2017-04-28 | A kind of gap of worm dynamic collocation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107416015A true CN107416015A (en) | 2017-12-01 |
Family
ID=60424280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710293009.XA Withdrawn CN107416015A (en) | 2017-04-28 | 2017-04-28 | A kind of gap of worm dynamic collocation structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107416015A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108000175A (en) * | 2017-12-24 | 2018-05-08 | 芜湖洪金机床有限公司 | A kind of adjustable numerical control rotating platform of gap of worm |
| CN108945088A (en) * | 2018-06-20 | 2018-12-07 | 新乡艾迪威汽车科技有限公司 | A kind of electric steering system rocker compensating gear |
| CN110239616A (en) * | 2018-03-08 | 2019-09-17 | 操纵技术Ip控股公司 | The offset of floating worm shaft bearing bore |
| CN110985646A (en) * | 2019-12-31 | 2020-04-10 | 北京科旭威尔科技股份有限公司 | Worm wheel and worm clearance eliminating mechanism |
| CN112407024A (en) * | 2020-10-27 | 2021-02-26 | 宁波拓普集团股份有限公司 | Steering column worm axial clearance compensation method |
| CN113423960A (en) * | 2019-02-12 | 2021-09-21 | 日本精工株式会社 | Worm gear reducer and electric assist device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07332359A (en) * | 1994-06-13 | 1995-12-22 | Ntn Corp | Conical roller bearing |
| JP2002054721A (en) * | 2000-08-08 | 2002-02-20 | Fuji Heavy Ind Ltd | Support structure of space for drive shaft |
| CN201448368U (en) * | 2009-05-22 | 2010-05-05 | 马建平 | Self complementary zero clearance sliding bearing |
| JP2012091653A (en) * | 2010-10-26 | 2012-05-17 | Jtekt Corp | Electric power steering device |
| CN203717841U (en) * | 2014-02-26 | 2014-07-16 | 安徽江淮汽车股份有限公司 | Radial clearance eliminating structure and worm and gear clearance eliminating structure |
-
2017
- 2017-04-28 CN CN201710293009.XA patent/CN107416015A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07332359A (en) * | 1994-06-13 | 1995-12-22 | Ntn Corp | Conical roller bearing |
| JP2002054721A (en) * | 2000-08-08 | 2002-02-20 | Fuji Heavy Ind Ltd | Support structure of space for drive shaft |
| CN201448368U (en) * | 2009-05-22 | 2010-05-05 | 马建平 | Self complementary zero clearance sliding bearing |
| JP2012091653A (en) * | 2010-10-26 | 2012-05-17 | Jtekt Corp | Electric power steering device |
| CN203717841U (en) * | 2014-02-26 | 2014-07-16 | 安徽江淮汽车股份有限公司 | Radial clearance eliminating structure and worm and gear clearance eliminating structure |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108000175A (en) * | 2017-12-24 | 2018-05-08 | 芜湖洪金机床有限公司 | A kind of adjustable numerical control rotating platform of gap of worm |
| CN110239616A (en) * | 2018-03-08 | 2019-09-17 | 操纵技术Ip控股公司 | The offset of floating worm shaft bearing bore |
| US11143284B2 (en) | 2018-03-08 | 2021-10-12 | Steering Solutions Ip Holding Corporation | Floating worm bearing bore offset |
| CN110239616B (en) * | 2018-03-08 | 2022-07-19 | 操纵技术Ip控股公司 | Offset of floating worm bearing bore |
| CN108945088A (en) * | 2018-06-20 | 2018-12-07 | 新乡艾迪威汽车科技有限公司 | A kind of electric steering system rocker compensating gear |
| CN108945088B (en) * | 2018-06-20 | 2023-07-25 | 豫北转向系统(新乡)股份有限公司 | Gap compensation mechanism of electric steering system |
| CN113423960A (en) * | 2019-02-12 | 2021-09-21 | 日本精工株式会社 | Worm gear reducer and electric assist device |
| CN113423960B (en) * | 2019-02-12 | 2023-02-17 | 日本精工株式会社 | Worm gear reducer and electric assist device |
| CN110985646A (en) * | 2019-12-31 | 2020-04-10 | 北京科旭威尔科技股份有限公司 | Worm wheel and worm clearance eliminating mechanism |
| CN112407024A (en) * | 2020-10-27 | 2021-02-26 | 宁波拓普集团股份有限公司 | Steering column worm axial clearance compensation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107416015A (en) | A kind of gap of worm dynamic collocation structure | |
| WO2012157605A1 (en) | Rack-and-pinion steering gear unit | |
| US20150060188A1 (en) | Power steering apparatus and method of manufacturing power steering apparatus | |
| JP5007591B2 (en) | Electric power steering device | |
| US20070261909A1 (en) | Steering apparatus for vehicle | |
| JPWO2006070889A1 (en) | Electric power steering device | |
| CN102673632A (en) | Electric tilt steering apparatus for vehicle | |
| JP2008030747A (en) | Steering device | |
| US11760408B2 (en) | Steering gear mechanism and steering system for a motor vehicle | |
| CN107985394A (en) | Suitable for the rocker compensating gear of the reducing gear of electric boosting steering system | |
| US20200062291A1 (en) | Shaft for steering device, method of manufacturing shaft for steering device, and electric power steering device | |
| JP2007161165A (en) | Power transmission mechanism and electric power steering device installing the mechanism | |
| JP2003002220A (en) | Electric power steering device | |
| JP2008120291A (en) | Steering device for vehicle | |
| US7172051B2 (en) | Steering apparatus for vehicle | |
| US20190168800A1 (en) | Ball Nut Assembly For A Power Steering Assembly Of A Vehicle | |
| KR20160104762A (en) | Reducer having planet gear for Electric Power Steering Apparatus | |
| US20080128196A1 (en) | Reduction gear mechanism and electric power steering apparatus | |
| JP2006088726A (en) | Electric power steering device | |
| JP4411952B2 (en) | Vehicle steering system | |
| KR20110125513A (en) | Reducer and electric power steering apparatus having the same | |
| FR2721891A1 (en) | STEERING WITH RACK ROTATED BY SERVOMOTOR | |
| JP2004009882A (en) | Electric power steering device | |
| JP2016120729A (en) | Electric assist device and its manufacturing method | |
| JP4859866B2 (en) | Telescopic mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20171201 |
|
| WW01 | Invention patent application withdrawn after publication |