CN104832633A - Radial clearance adjusting structure of worm gear and worm - Google Patents
Radial clearance adjusting structure of worm gear and worm Download PDFInfo
- Publication number
- CN104832633A CN104832633A CN201510217745.8A CN201510217745A CN104832633A CN 104832633 A CN104832633 A CN 104832633A CN 201510217745 A CN201510217745 A CN 201510217745A CN 104832633 A CN104832633 A CN 104832633A
- Authority
- CN
- China
- Prior art keywords
- worm
- screw rod
- adjusting screw
- clutch shaft
- guiding groove
- 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
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
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
- F16H1/12—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
- F16H1/16—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel
-
- 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
- F16H57/00—General details of gearing
- F16H57/12—Arrangements for adjusting or for taking-up backlash not provided for elsewhere
-
- 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
- F16H57/00—General details of gearing
- F16H57/12—Arrangements for adjusting or for taking-up backlash not provided for elsewhere
- F16H2057/126—Self-adjusting during operation, e.g. by a spring
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear Transmission (AREA)
Abstract
The invention discloses a radial clearance adjusting structure of a worm gear and worm. The radial clearance adjusting structure comprises a shell, a worm gear and a worm, wherein the worm gear and the worm are arranged in the shell and are mutually meshed; two ends of the worm are arranged on the shell through a first bearing and a second bearing in a supporting way; the outer part of the first bearing is provided with an adjusting sleeve in a sleeving way; an adjusting zone which is used for enabling the first bearing to move in the radial direction is arranged in the adjusting sleeve; a threaded hole is formed in the shell and is positioned under the adjusting sleeve; an adjusting screw rod is arranged in the threaded rod; one end, which is positioned in the shell, of the adjusting screw rod is provided with a meshing part; the meshing part is a circular truncated cone body; spiral teeth are arranged at the periphery of the meshing part; root diameters of the spiral teeth on the meshing part are gradually increased from one end which is far away from the adjusting screw rod to one end which is close to the adjusting screw rod; the spiral teeth on the meshing part are partially meshed with the worm. According to the radial clearance adjusting structure disclosed by the invention, the adjustment on a clearance between the worm gear and the worm can be realized through the matching of the adjusting screw rod which is arranged under the adjusting sleeve and the meshing part which is arranged at one end of the adjusting screw rod with the adjusting sleeve, and thus the clearance which is not beneficial for the transmission of the worm gear and worm can be removed.
Description
Technical field
The present invention relates to Worm Wheel System technical field, particularly relate to a kind of worm and gear radial clearance adjust structure.
Background technique
In automobile steering system, the normal motor that adopts is connected with worm type of reduction gearing to realize slowing down and increases moment of torsion, then passes motion to steering column.In existing structure, worm screw two ends are by bearings on the housing of retarder, and worm screw is connected with motor output shaft by coupling; Worm gear is fixedly connected with the output shaft of steering column, the output shaft of steering column by bearings on reducer shell.Drive worm screw to rotate when motor rotates by coupling, power is reached steering column output shaft by engaging with worm gear by worm screw, achieves power steering function.
The effect stressed for a long time in transmission process of worm and gear can produce gap; The generation in gap can cause Worm Wheel System not steady, occurs velocity ratio fluctuation and rotational noise, finally causes worm and gear to lose efficacy.
Summary of the invention
Based on the technical problem that above-mentioned background technology exists, the present invention proposes a kind of worm and gear radial clearance adjust structure, can adjust the gap between worm gear and worm screw, to eliminate the gap between worm and gear.
The present invention proposes a kind of worm and gear radial clearance adjust structure, comprising: housing and to be arranged in housing and intermeshing worm gear, worm screw, wherein:
The two ends of worm screw are by clutch shaft bearing and the second bearings on housing, and clutch shaft bearing outer cover has adjustment sleeve, and being provided with in adjustment sleeve can for the radial movable regulatory region of clutch shaft bearing; Below housing being positioned at adjustment sleeve is provided with tapped hole, adjusting screw rod is provided with in tapped hole, and the precession direction of adjusting screw rod is perpendicular to clutch shaft bearing radial activity direction in regulatory region, one end that adjusting screw rod is positioned at housing is provided with engaging piece, engaging piece is positioned at the below of worm screw, engaging piece is Rotary-table, the periphery of engaging piece is provided with helical tooth, and the root diameter of helical tooth is progressively increased progressively to the one end near adjusting screw rod by the one end away from adjusting screw rod on engaging piece, the helical tooth local on engaging piece and worm meshing.
Preferably, the second bearing is selfaligning bearing.
Preferably, one end that adjusting screw rod is positioned at hull outside is provided with regulating handle.
Preferably, be provided with guiding groove in adjustment sleeve, the width of guiding groove and the external diameter adaptation of clutch shaft bearing, the length of guiding groove is greater than the external diameter of clutch shaft bearing, clutch shaft bearing is assemblied in guiding groove, and regulatory region is formed to the part being greater than clutch shaft bearing external diameter by guiding groove length.
Preferably, along the length direction of guiding groove, one end of guiding groove is set to arc, and the other end is set to rectangle.
Preferably, be provided with briquetting in guiding groove, the top of briquetting is connected with Compress Spring, and Compress Spring is connected with the rectangular end of guiding groove, and clutch shaft bearing to be arranged in guiding groove and between briquetting and arc tips.
Preferably, relative with clutch shaft bearing on briquetting face is set to arc.
In the present invention, the two ends of worm screw are by bearings on housing, and the Bearing outer cover being arranged on worm screw wherein one end has adjustment sleeve, and being provided with in adjustment sleeve can for the radial movable regulatory region of clutch shaft bearing; Below housing being positioned at adjustment sleeve is provided with tapped hole, adjusting screw rod is provided with in tapped hole, and the precession direction of adjusting screw rod is perpendicular to clutch shaft bearing radial activity direction in regulatory region, one end that adjusting screw rod is positioned at housing is provided with engaging piece, engaging piece is positioned at the below of worm screw, engaging piece is Rotary-table, the periphery of engaging piece is provided with helical tooth, and the root diameter of helical tooth is progressively increased progressively to the one end near adjusting screw rod by the one end away from adjusting screw rod on engaging piece, the helical tooth local on engaging piece and worm meshing; Excesssive gap between worm gear and worm screw, when having noise to produce, adjusting screw rod is to enclosure interior precession, be arranged on engaging piece on adjusting screw rod also along with inside precession, because the root diameter of helical tooth on engaging piece is progressively increased progressively to the one end near adjusting screw rod by the one end away from adjusting screw rod, therefore, engaging piece forward precession can make worm screw move up, thus the radial distance between worm and wheel is reduced, radial distance reduces the gap between worm and wheel is reduced; In like manner, when needing to increase the gap between worm and wheel, adjusting screw rod is screwed out to hull outside, be arranged on engaging piece on adjusting screw rod also along with outside back-out, worm screw moves down, radial distance between worm and wheel is increased, and radial distance increase makes the gap between worm and wheel increase; The present invention reaches with back-out the object adjusted worm and worm gear radial clearance by the precession of engaging piece.
In sum, the present invention is by being set with adjustment sleeve at Bearing outer, arranging in adjustment sleeve can for the radial movable regulatory region of clutch shaft bearing, make bearing can carry out radial activity adjustment in adjustment sleeve, recycle the adjusting screw rod that is arranged on below adjustment sleeve and be arranged on adjusting screw rod one end and carry out coordinating the gap realized between worm and gear to adjust with adjustment sleeve with the engaging piece of worm meshing, to eliminate the gap being unfavorable for Worm Wheel System, make worm and gear can steadily transmission, avoid velocity ratio to fluctuate and the generation of rotational noise problem.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of worm and gear radial clearance adjust structure that the present invention proposes;
Fig. 2 is the structural representation of adjustment sleeve in a kind of worm and gear radial clearance adjust structure of proposing of the present invention.
Embodiment
Below, by specific embodiment, technological scheme of the present invention is described in detail.
As shown in Figure 1-2, Fig. 1 is the structural representation of a kind of worm and gear radial clearance adjust structure that the present invention proposes; Fig. 2 is the structural representation of adjustment sleeve in a kind of worm and gear radial clearance adjust structure of proposing of the present invention.
With reference to Fig. 1-2, a kind of worm and gear radial clearance adjust structure that the embodiment of the present invention proposes, comprising: housing 1 and to be arranged in housing 1 and intermeshing worm gear 2, worm screw 3, wherein:
The two ends of worm screw 3 are supported on housing 1 by clutch shaft bearing 4 and the second bearing 5, wherein, second bearing 5 is selfaligning bearing, clutch shaft bearing 4 outer cover has adjustment sleeve 5, guiding groove 51 is provided with in adjustment sleeve 5, the width of guiding groove 51 and the external diameter adaptation of clutch shaft bearing 4, the length of guiding groove 51 is greater than the external diameter of clutch shaft bearing 4, guiding groove 51 length is formed for the radial movable regulatory region of clutch shaft bearing 4 to the part being greater than clutch shaft bearing 4 external diameter, along the length direction of guiding groove 51, one end of guiding groove 51 is set to arc, the other end is set to rectangle, and in order to make clutch shaft bearing 4 can steadily transmission, briquetting 8 is provided with in guiding groove 51, the top of briquetting 8 is connected with Compress Spring (9), Compress Spring (9) is connected with the rectangular end of guiding groove 51, clutch shaft bearing 4 to be arranged in guiding groove 51 and between briquetting 8 and arc tips.
Below housing 1 being positioned at adjustment sleeve 5 is provided with tapped hole, adjusting screw rod 6 is provided with in tapped hole, and the precession direction of adjusting screw rod 6 is perpendicular to clutch shaft bearing 4 radial activity direction in regulatory region, adjusting screw rod 6 one end be positioned at outside housing 1 is provided with regulating handle 10, and one end that adjusting screw rod 6 is positioned at housing 1 is provided with engaging piece 7; Engaging piece 7 is positioned at the below of worm screw 3, engaging piece 7 is Rotary-table, the periphery of engaging piece 7 is provided with helical tooth, and on engaging piece 7, the root diameter of helical tooth is progressively increased progressively to the one end near adjusting screw rod 6 by the one end away from adjusting screw rod 6, and the helical tooth local on engaging piece 7 is engaged with worm screw 3.
The present invention is work like this, excesssive gap between worm gear 2 and worm screw 3, when having noise to produce, adjusting screw rod 6 is to the inner precession of housing 1, be arranged on engaging piece 7 on adjusting screw rod 6 also along with inside precession, because the root diameter of helical tooth on engaging piece 7 is progressively increased progressively to the one end near adjusting screw rod 6 by the one end away from adjusting screw rod 6, therefore, engaging piece 7 forward precession can make worm screw 3 move up, thus the radial distance between worm screw 3 and worm gear 2 is reduced, radial distance reduces the gap between worm screw 3 and worm gear 2 is reduced; In like manner, when needing to increase the gap between worm screw 3 and worm gear 2, adjusting screw rod 6 is screwed out outside housing 1, be arranged on engaging piece 7 on adjusting screw rod 6 also along with outside back-out, worm screw 3 moves down, radial distance between worm screw 3 and worm gear 2 is increased, and radial distance increase makes the gap between worm screw 3 and worm gear 2 increase; The present invention reaches with back-out the object adjusted worm screw 3 worm gear 2 radial clearance by the precession of engaging piece 7.
The present invention is by being set with adjustment sleeve 5 at Bearing outer, arranging in adjustment sleeve 5 can for the radial movable regulatory region of clutch shaft bearing, make bearing can carry out radial activity adjustment in adjustment sleeve 5, recycle the adjusting screw rod 6 that is arranged on below adjustment sleeve 5 and be arranged on adjusting screw rod 6 one end and the engaging piece 7 engaged with worm screw 3 and adjustment sleeve 5 carry out coordinating the gap between realizing worm gear 2 worm screw 3 to adjust, to eliminate the gap being unfavorable for the transmission of worm gear 2 worm screw 3, make worm gear 2 worm screw 3 can steadily transmission, avoid velocity ratio to fluctuate and the generation of rotational noise problem.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technological scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (7)
1. a worm and gear radial clearance adjust structure, is characterized in that, comprising: housing (1) and to be arranged in housing (1) and intermeshing worm gear (2), worm screw (3), wherein:
The two ends of worm screw (3) are supported on housing (1) by clutch shaft bearing (4) and the second bearing (5), clutch shaft bearing (4) outer cover has adjustment sleeve (5), and being provided with in adjustment sleeve (5) can for the regulatory region of clutch shaft bearing footpath (4) to activity; Below housing (1) being positioned at adjustment sleeve (5) is provided with tapped hole, adjusting screw rod (6) is provided with in tapped hole, and the precession direction of adjusting screw rod (6) is perpendicular to clutch shaft bearing (4) radial activity direction in regulatory region, one end that adjusting screw rod (6) is positioned at housing (1) is provided with engaging piece (7); Engaging piece (7) is positioned at the below of worm screw (3), engaging piece (7) is Rotary-table, the periphery of engaging piece (7) is provided with helical tooth, and the root diameter of the upper helical tooth of engaging piece (7) is progressively increased progressively to the one end near adjusting screw rod (6) by the one end away from adjusting screw rod (6), the helical tooth local on engaging piece (7) is engaged with worm screw (3).
2. worm and gear radial clearance adjust structure according to claim 1, is characterized in that, the second bearing (5) is selfaligning bearing.
3. worm and gear radial clearance adjust structure according to claim 1, is characterized in that, one end that adjusting screw rod (6) is positioned at housing (1) outside is provided with regulating handle (10).
4. worm and gear radial clearance adjust structure according to claim 1, it is characterized in that, guiding groove (51) is provided with in adjustment sleeve (5), the width of guiding groove (51) and the external diameter adaptation of clutch shaft bearing (4), the length of guiding groove (51) is greater than the external diameter of clutch shaft bearing (4), clutch shaft bearing (4) is assemblied in guiding groove (51), and regulatory region is formed to the part being greater than clutch shaft bearing (4) external diameter by guiding groove (51) length.
5. worm and gear radial clearance adjust structure according to claim 4, is characterized in that, along the length direction of guiding groove (51), one end of guiding groove (51) is set to arc, and the other end is set to rectangle.
6. worm and gear radial clearance adjust structure according to claim 5, it is characterized in that, briquetting (8) is provided with in guiding groove (51), the top of briquetting (8) is connected with Compress Spring (9), Compress Spring (9) is connected with the rectangular end of guiding groove (51), and clutch shaft bearing (4) to be arranged in guiding groove (51) and to be positioned between briquetting (8) and arc tips.
7. worm and gear radial clearance adjust structure according to claim 6, is characterized in that, the upper face relative with clutch shaft bearing (4) of briquetting (8) is set to arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510217745.8A CN104832633A (en) | 2015-04-30 | 2015-04-30 | Radial clearance adjusting structure of worm gear and worm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510217745.8A CN104832633A (en) | 2015-04-30 | 2015-04-30 | Radial clearance adjusting structure of worm gear and worm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104832633A true CN104832633A (en) | 2015-08-12 |
Family
ID=53810723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510217745.8A Pending CN104832633A (en) | 2015-04-30 | 2015-04-30 | Radial clearance adjusting structure of worm gear and worm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104832633A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017211175A1 (en) * | 2016-06-06 | 2017-12-14 | 舍弗勒技术股份两合公司 | Worm gear mechanism |
| CN107718856A (en) * | 2017-11-23 | 2018-02-23 | 运城制版印刷机械制造有限公司 | Intaglio press oil-immersed type lubricates material retractable device for revolving and driving |
| CN108516166A (en) * | 2018-05-23 | 2018-09-11 | 东莞市铨丰自动化设备有限公司 | A kind of efficient label transmission mechanism |
| 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 |
| CN111561546A (en) * | 2020-05-21 | 2020-08-21 | 安徽江淮汽车集团股份有限公司 | Steering gear and speed reducer |
-
2015
- 2015-04-30 CN CN201510217745.8A patent/CN104832633A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017211175A1 (en) * | 2016-06-06 | 2017-12-14 | 舍弗勒技术股份两合公司 | Worm gear mechanism |
| CN107718856A (en) * | 2017-11-23 | 2018-02-23 | 运城制版印刷机械制造有限公司 | Intaglio press oil-immersed type lubricates material retractable device for revolving and driving |
| CN108516166A (en) * | 2018-05-23 | 2018-09-11 | 东莞市铨丰自动化设备有限公司 | A kind of efficient label transmission mechanism |
| 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 |
| CN111561546A (en) * | 2020-05-21 | 2020-08-21 | 安徽江淮汽车集团股份有限公司 | Steering gear and speed reducer |
| CN111561546B (en) * | 2020-05-21 | 2021-10-22 | 安徽江淮汽车集团股份有限公司 | Steering gear and speed reducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150812 |
|
| WD01 | Invention patent application deemed withdrawn after publication |