CN108799477B - Adjusting mechanism for meshing clearance of worm and gear, speed reducing mechanism and automobile - Google Patents
Adjusting mechanism for meshing clearance of worm and gear, speed reducing mechanism and automobile Download PDFInfo
- Publication number
- CN108799477B CN108799477B CN201710309280.8A CN201710309280A CN108799477B CN 108799477 B CN108799477 B CN 108799477B CN 201710309280 A CN201710309280 A CN 201710309280A CN 108799477 B CN108799477 B CN 108799477B
- Authority
- CN
- China
- Prior art keywords
- worm
- inner ring
- ring
- adjustment mechanism
- outer ring
- 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.)
- Active
Links
Images
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
- F16H57/00—General details of gearing
- F16H57/12—Arrangements for adjusting or for taking-up backlash not provided for elsewhere
-
- 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
-
- 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
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/028—Gearboxes; Mounting gearing therein characterised by means for reducing vibration or noise
-
- 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
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02039—Gearboxes for particular applications
- F16H2057/02043—Gearboxes for particular applications for vehicle transmissions
-
- 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
- F16H2057/127—Self-adjusting during operation, e.g. by a spring using springs
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Gear Transmission (AREA)
- Gears, Cams (AREA)
Abstract
The utility model provides an adjustment mechanism, reduction gears and car of worm gear meshing clearance, wherein, adjustment mechanism of worm gear meshing clearance includes: an outer ring; the inner ring of the open ring and the inner ring have a gap in the radial direction, the outer surface of the inner ring is fixedly connected with the inner surface of the outer ring, and an elastic element capable of generating radial pressing force is arranged between the inner ring and the outer ring; the first bulge is made of elastic materials and arranged on the inner surface of the outer ring, and the first bulge is close to the opening of the inner ring; and the second bulge is made of elastic materials, is arranged on the outer surface of the inner ring, is opposite to the first bulge and has a gap in the radial direction. The adjusting mechanism can eliminate the meshing clearance of the worm and the gear, reduce noise and improve the driving comfort of a driver.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to an adjusting mechanism of a worm gear and worm meshing clearance, a speed reducing mechanism and an automobile.
Background
An Electric Power Steering (EPS) is a Power Steering system that directly relies on a motor to provide an auxiliary torque, and the EPS mainly comprises a torque sensor, a vehicle speed sensor, a motor, an Electric Power Steering, a speed reducing mechanism, an Electronic Control Unit (ECU) and the like. The electric power steering gear comprises a shell, a worm wheel mounting cavity and a worm mounting cavity are arranged in the shell of the electric power steering gear, the worm mounting cavity is provided with a worm, the worm wheel mounting cavity is provided with a worm wheel, the worm wheel and the worm are meshed with each other, and the worm is connected with the output end of a motor through a coupler.
Due to the influence of factors such as machining errors, assembly errors and tool environments, the worm and gear have meshing gaps. Noise is generated during steering, and the comfort of a driver is affected. In order to eliminate the meshing clearance of the worm gear, a worm gear meshing clearance adjusting mechanism is adopted in the prior art to eliminate the meshing clearance. However, in the process of eliminating the meshing clearance, the adjusting mechanism in the prior art generates noise and influences the driving comfort of a driver.
Disclosure of Invention
The invention solves the problem that the prior worm gear and worm meshing clearance adjusting mechanism can generate noise in the process of eliminating the meshing clearance.
In order to solve the above problems, the present invention provides an adjusting mechanism for a worm gear meshing gap, comprising: an outer ring; the inner ring of the open ring and the outer ring have a gap in the radial direction, the outer surface of the inner ring is fixedly connected with the inner surface of the outer ring, and an elastic element capable of generating radial pressing force is arranged between the inner ring and the outer ring; the first bulge is made of elastic materials and arranged on the inner surface of the outer ring, and the first bulge is close to the opening of the inner ring; and the second bulge is made of elastic materials, is arranged on the outer surface of the inner ring, is opposite to the first bulge and has a gap in the radial direction.
Optionally, the first protrusion extends in a circumferential direction.
Optionally, the second protrusion extends in a circumferential direction.
Optionally, the thickness of the second protrusion in the radial direction gradually increases in a direction away from the opening.
Optionally, the second protrusions are arranged on the two sides of the opening of the inner ring in the circumferential direction.
Optionally, the inner ring and the outer ring are made of engineering plastics or resin materials.
Optionally, the first protrusion and the second protrusion are made of engineering plastics or resin materials.
Optionally, the outer surface of the inner ring is at least provided with a first groove and a second groove which extend along the circumferential direction, the first groove and the second groove are arranged at intervals along the axial direction, and the second protrusion is located between the first groove and the second groove; the first groove and the second groove are respectively provided with the elastic elements.
Optionally, the elastic element is a snap spring.
The present invention also provides a reduction mechanism comprising: the worm gear mounting cavity is arranged in the shell; the worm wheel is arranged in the worm wheel installation cavity; the worm is arranged in the worm mounting cavity, the worm wheel and the worm are meshed with each other, and the worm is provided with a first end and a second end along the axial direction; in the adjusting mechanism, the outer ring abuts against the cavity wall of the worm mounting cavity, the first end and/or the second end is/are sleeved with a bearing, and the inner ring is sleeved on the outer peripheral surface of the bearing.
Optionally, the speed reducing mechanism is an electric power steering system, and the housing is a steering gear housing.
The invention also provides an automobile comprising the speed reducing mechanism.
Compared with the prior art, the technical scheme of the invention has the following advantages:
the adjusting mechanism of the meshing clearance of the worm gear and the worm comprises an outer ring and an open-ring inner ring, wherein the inner ring is sleeved on the worm, the outer ring is abutted against a worm cavity for mounting the worm, and an elastic element capable of generating radial pressing force is arranged between the inner ring and the outer ring. After the worm gear and the worm are assembled, the worm gear and the worm are meshed well, the inner ring of the adjusting mechanism is sleeved on the worm, the elastic element is in an initial state, and initial pre-tightening force exists. After the worm gear works for a period of time, a meshing gap is formed between the worm gear and the worm, the worm moves towards the direction far away from the worm gear, and the distance of the worm gear and the worm in the radial direction is increased.
Because the inner ring of the adjusting mechanism is sleeved on the worm, when the worm moves towards the direction far away from the worm wheel, the worm applies acting force to the inner ring. Because the inner ring is an open ring, the opening of the inner ring becomes larger, the elastic element arranged between the inner ring and the outer ring can generate elastic deformation along with the increase of the opening and generate radial pressing force, and the radial pressing force causes the opening of the inner ring to become smaller and causes the inner ring to reset. In the process of resetting, the inner ring can drive the worm to move towards the direction close to the worm wheel, so that the worm wheel and the worm are meshed compactly, and a meshing gap is not generated.
Meanwhile, in the process of eliminating the meshing clearance of the adjusting mechanism, the opening of the inner ring is enlarged, the inner ring is close to the outer ring, and noise is generated if the inner ring collides with the outer ring. According to the invention, the inner surface of the outer ring is provided with the first bulge, the first bulge is close to the opening of the inner ring, the outer surface of the inner ring is provided with the second bulge, and the second bulge is opposite to the first bulge.
In the process that the opening of the inner ring is enlarged, the second bulge approaches to the first bulge and contacts with the first bulge; and first arch and second are elastic material, and hardness between them is lower, can play the effect of buffering and inhaling, has greatly reduced guiding mechanism and has eliminated the produced noise of meshing clearance in-process inner circle and outer lane collision. The adjusting mechanism of the invention can eliminate the meshing clearance of the worm and the gear, reduce the noise and improve the driving comfort of the driver.
Drawings
FIG. 1 is a diagram of a meshing state of a worm gear and a worm according to an embodiment of the present invention, in which a partial structure of the worm gear, a partial structure of the worm, and a meshing gap adjusting mechanism sleeved on a first end of the worm are shown;
FIG. 2 is a side view of the worm gear and worm backlash adjustment mechanism of the present invention;
FIG. 3 is a perspective view of a worm gear backlash adjustment mechanism in accordance with an embodiment of the present invention;
FIG. 4 is an exploded perspective view of FIG. 3;
fig. 5 is a schematic structural diagram of a worm and gear backlash adjustment mechanism according to an embodiment of the present invention, in which a plane B in which a center point F of an inner ring is located and a plane C in which a center point G of an outer ring is located are illustrated.
Detailed Description
In the prior art, a worm and gear meshing clearance adjusting mechanism generates noise in the process of eliminating the meshing clearance. The adjusting mechanism for the meshing clearance of the worm and gear is provided with the first bulge made of elastic material and the second bulge made of elastic material, so that the adjusting mechanism can eliminate the meshing clearance of the worm and gear, reduce noise and improve the driving comfort of a driver.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1, in the present embodiment, the speed reduction mechanism is an electric power steering system, and includes a housing 10, and the housing 10 is a steering gear housing. The housing 10 has a worm wheel mounting cavity 11 and a worm mounting cavity 12, a worm wheel 20 is mounted in the worm wheel mounting cavity 11, and a worm 30 is mounted in the worm mounting cavity 12. Fig. 1 shows only a partial structure of the worm wheel 20 and a partial structure of the worm shaft 30. In the axial direction of the worm shaft 30, the worm shaft 30 has a first end 31 and a second end, only the first end 31 of the worm shaft 30 being shown in fig. 1.
Due to the influence of factors such as machining errors, assembly errors and tool environments, the worm and gear have meshing gaps. Noise is generated during steering, and the comfort of a driver is affected. To eliminate the backlash of the worm gear, with continued reference to fig. 1, a worm gear backlash adjustment mechanism 40 is sleeved on the first end 31 of the worm 30 for eliminating the backlash of the worm gear.
Specifically, referring to fig. 2, the worm gear backlash adjustment mechanism 40 includes: the outer ring 41 and the open-ring inner ring 42 are provided with a gap A in the radial direction, and the outer surface of the inner ring 42 is fixedly connected with the inner surface of the outer ring 41. In this embodiment, the outer surface of the inner ring 42 is protruded with a connecting portion 44 for fixedly connecting with the inner surface of the outer ring 41. Referring to fig. 1, the outer ring 41 of the adjusting mechanism 40 abuts against the wall of the worm mounting cavity 12, the first end 31 of the worm 30 is provided with a bearing 50 for bearing a radial load, and the inner ring 42 of the adjusting mechanism 40 is fitted around the outer circumferential surface of the bearing 50.
In this embodiment, the outer ring 41 of the adjusting mechanism 40 is a closed ring, and in other embodiments, may be an open ring; in addition, the first end 31 of the worm shaft 30 is provided with a bearing 50 in the present embodiment, and in other embodiments, the second end of the worm shaft is provided with a bearing; or the first end and the second end of the output shaft of the worm are both provided with bearings; correspondingly, the inner ring of the adjusting mechanism is sleeved on the outer peripheral surface of the bearing.
Referring to fig. 3 and 4, an embodiment of the present invention is provided with an elastic member 43 capable of generating a radially pressing force between the inner race 42 and the outer race 41. After the worm gear and the worm are assembled, the worm gear and the worm are meshed well, the elastic element 43 is in an initial state, and initial pretightening force exists. After the worm gear works for a period of time, a meshing gap is generated between the worm gear and the worm, which is represented by that the worm 30 moves away from the worm wheel 20 (shown in a direction D in fig. 1), and the distance of the worm gear and the worm increases in the radial direction.
Since the inner race 42 of the adjustment mechanism 40 is disposed on the worm shaft 30, the worm shaft 30 applies a force to the inner race 42 when the worm shaft 30 moves away from the worm wheel 20. Since the inner ring 42 is an open ring, the opening of the inner ring 42 becomes larger, and the elastic element 43 disposed between the inner ring 42 and the outer ring 41 is elastically deformed as the opening becomes larger, and generates a radial pressing force, which causes the opening of the inner ring 42 to become smaller, and causes the inner ring 42 to return. During the resetting process, the inner ring 42 drives the worm 30 to move towards the direction close to the worm wheel 20 (the direction opposite to the direction D in fig. 1), so that the worm wheel and the worm are tightly meshed without generating meshing gaps.
Meanwhile, referring to fig. 3, since the opening of the inner ring 42 becomes large in the process of eliminating the backlash in the adjustment mechanism 40, the inner ring 42 approaches the outer ring 41, and noise is generated if the inner ring 42 collides with the outer ring 41. The present invention is provided with a first protrusion 41a on the inner surface of the outer ring 41, the first protrusion 41a being close to the opening of the inner ring 42, and a second protrusion 42a on the outer surface of the inner ring 42, the second protrusion 42a being opposite to the first protrusion 41a with a gap in the radial direction.
In the process that the opening of the inner ring 42 becomes larger, the second projection 42a approaches the first projection 41a, and the second projection 42a contacts the first projection 41 a; and first arch 41a and second arch 42a are elastic material, and both hardness is lower, can play the effect of buffering and inhaling, has greatly reduced guiding mechanism 40 and has eliminated the produced noise of meshing clearance in-process inner circle 42 and 41 collision of outer lane. The adjusting mechanism 40 of the invention can eliminate the meshing clearance of the worm and the gear, reduce the noise and improve the driving comfort of the driver.
With continued reference to fig. 3, in the present embodiment, the first protrusion 41a extends in the circumferential direction, and a projection of the first protrusion 41a in the radial direction covers the opening of the inner ring 42; meanwhile, the second protrusion 42a extends in the circumferential direction, in the present embodiment, the second protrusion 42a is provided at both sides of the opening of the inner ring 42 in the circumferential direction, and in other embodiments, the second protrusion may be provided at any side of the opening of the inner ring in the circumferential direction.
In this embodiment, the projection of the first protrusion 41a in the radial direction at least partially covers the two second protrusions 42a, and even the projection of the first protrusion 41a in the radial direction may completely cover the two second protrusions 42a (corresponding to the length of the first protrusion 41a extending in the circumferential direction being greater than the sum of the lengths of the two second protrusions 42a extending in the circumferential direction). By adopting the design, the circumferentially extending parts of the second protrusions 42a are in contact with the first protrusions 41a in the process that the second protrusions are close to the first protrusions 41a, so that shock absorption can be maximally realized, and noise can be reduced.
It should be noted that, in the present embodiment, the second protrusion 42a starts to extend in the circumferential direction at the opening of the inner ring 42; in other embodiments, the second protrusion 42a may extend circumferentially away from the opening of the inner race 42. Equivalently, no matter how the first projection 41a and the second projection 42a are arranged, as long as: the projection of the first protrusion 41a in the radial direction at least partially covers the two second protrusions 42a, so that the second protrusions 42a can contact with each other in the process of approaching the first protrusion 41a, so as to absorb shock and reduce noise.
With continued reference to fig. 3, the second projection 42a gradually increases in thickness in the radial direction in a direction away from the opening of the inner race 42, as indicated by direction E in fig. 3. Equivalently, the dimension h of the second projection 42a to the first projection 41a in the radial direction gradually decreases. The design makes inner circle 42 have great deformation space at the opening part, is favorable to the opening grow or diminish of inner circle 42, can adjust the gear clearance of worm gear, simultaneously, still makes second arch 42a can contact with first arch 41a to the buffering shakes, the noise reduction.
If the thickness of the second protrusion 42a in the radial direction is equal to the size, the second protrusion 42a is in line contact with the first protrusion 41a after the inner ring 42 is enlarged at the opening; however, in the present invention, after the thickness of the second protrusion 42a in the radial direction is not equal, and the inner ring 42 is enlarged at the opening, the second protrusion 42a is in surface contact with the first protrusion 41 a. Compared with the line contact, the surface contact can reduce the abrasion between the first protrusion 41a and the second protrusion 42a, and on the other hand, the surface contact can increase the contact area between the first protrusion 41a and the second protrusion 42a, which is beneficial to buffering and absorbing shock and reducing noise.
In addition, the design has the following advantages: when the opening of the inner ring 42 begins to become larger, the portion of the second protrusion 42a with a smaller thickness in the radial direction (i.e., the opening of the inner ring 42) will contact the first protrusion 41a first, and at this time, the first protrusion 41a can not only absorb shock by buffering, but also better support the inner ring 42, so that the opening of the inner ring 42 becomes larger or smaller stably, and the meshing gap of the worm gear is better adjusted.
It should be noted that, in the embodiment, the first protrusion 41a and the second protrusion 42a are made of engineering plastics or resin materials, and the hardness of the materials is low, so that the first protrusion 41a and the second protrusion 42a can better buffer and absorb shock, and reduce noise after contacting. Specifically, the first protrusion 41a and the second protrusion 42a may be made of engineering plastics; or, simultaneously, a resin material; or one of the two is engineering plastic, and the other one is resin material.
In the present embodiment, the hardness of the inner ring 42 and the hardness of the outer ring 41 may be the same or different. For example, the inner ring 42 and the outer ring 41 are both made of engineering plastics or resin materials, and the hardness of the inner ring 42 and the hardness of the outer ring 41 are the same, so that noise generated after the inner ring 42 and the outer ring 41 collide can be avoided to a certain extent; the whole worm and gear meshing clearance adjusting mechanism 40 generates lower noise in the process of eliminating the worm and gear meshing clearance, and the driving comfort of a driver is improved. Or, in other embodiments, the hardness of the inner ring and the hardness of the outer ring are different, for example, the outer ring is made of steel, and the inner ring is made of engineering plastics or resin materials, so that noise generated after the inner ring and the outer ring collide can be avoided to a certain extent.
It should be noted that, in the present embodiment, the elastic element 43 is a snap spring, and referring to fig. 4, the snap spring is in an open ring shape and matches with the shape of the outer surface of the inner ring 42. Referring to fig. 3, the outer surface of the inner race 42 is provided with at least a first groove 42b and a second groove 42c extending in the circumferential direction, the first groove 42b and the second groove 42c being provided at intervals in the axial direction, and a second projection 42a being located between the first groove 42b and the second groove 42 c; snap springs are respectively arranged in the first groove 42b and the second groove 42 c.
Referring to fig. 5, the adjusting mechanism 40 is an eccentric structure, which corresponds to that the center point F of the inner ring 42 and the center point G of the outer ring 41 do not coincide, that is, the plane B on which the center point F of the inner ring 42 is located does not coincide with the plane C on which the center point G of the outer ring 41 is located, but is disposed at an interval. This enables the first end 31 of the worm 30 to be fitted with the adjusting mechanism 40, and then to generate a pre-pressing force in the meshing direction, thereby automatically eliminating the meshing gap between the worm and the gear.
In this embodiment, the resilient member elements are provided on the outer surface of the inner race 42, and in other embodiments, the resilient members may be provided on the inner surface of the outer race. Further, it should be noted that the specific structure of the elastic element 43 is not limited as long as the elastic element 43 is arranged between the inner ring 42 and the outer ring 41 to generate the radial pressing force.
The invention also provides an automobile which comprises the speed reducing mechanism.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (12)
1. The utility model provides an adjustment mechanism of worm gear meshing clearance which characterized in that includes:
an outer ring;
the inner ring of the open ring and the outer ring have a gap in the radial direction, the outer surface of the inner ring is fixedly connected with the inner surface of the outer ring, and an elastic element capable of generating radial pressing force is arranged between the inner ring and the outer ring;
the first bulge is made of elastic materials and arranged on the inner surface of the outer ring, and the first bulge is close to the opening of the inner ring;
the second bulge is made of elastic materials, is arranged on the outer surface of the inner ring, is opposite to the first bulge and has a gap in the radial direction;
the central point of the inner ring is positioned on one side of the central point of the outer ring, which is far away from the opening of the inner ring in the radial direction.
2. The adjustment mechanism of claim 1, wherein said first projection extends circumferentially.
3. The adjustment mechanism of claim 1, wherein said second projection extends circumferentially.
4. The adjustment mechanism of claim 3, wherein the second projection increases in thickness in a radial direction away from the opening.
5. The adjustment mechanism according to claim 1, wherein portions of the inner ring on both sides of the opening in the circumferential direction are provided with the second protrusions.
6. The adjustment mechanism of claim 1, wherein the inner race and the outer race are made of an engineering plastic or a resin material.
7. The adjustment mechanism of claim 1, wherein the first protrusion and the second protrusion are made of engineering plastic or resin material.
8. The adjustment mechanism of claim 1, wherein the outer surface of the inner race is provided with at least first and second circumferentially extending grooves spaced apart in the axial direction, and the second projection is located between the first and second grooves;
the first groove and the second groove are respectively provided with the elastic elements.
9. The adjustment mechanism of claim 8, wherein the resilient member is a circlip.
10. A speed reducing mechanism, comprising:
the worm gear mounting cavity is arranged in the shell;
the worm wheel is arranged in the worm wheel installation cavity;
the worm is arranged in the worm mounting cavity, the worm wheel and the worm are meshed with each other, and the worm is provided with a first end and a second end along the axial direction;
the adjusting mechanism according to any one of claims 1 to 9, wherein the outer ring abuts against a wall of the worm mounting cavity, the first end and/or the second end is/are provided with a bearing, and the inner ring is provided with an outer circumferential surface of the bearing.
11. The reduction mechanism of claim 10, wherein the reduction mechanism is an electric power steering system and the housing is a steering gear housing.
12. An automobile characterized by comprising the speed reducing mechanism of claim 10 or 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710309280.8A CN108799477B (en) | 2017-05-04 | 2017-05-04 | Adjusting mechanism for meshing clearance of worm and gear, speed reducing mechanism and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710309280.8A CN108799477B (en) | 2017-05-04 | 2017-05-04 | Adjusting mechanism for meshing clearance of worm and gear, speed reducing mechanism and automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108799477A CN108799477A (en) | 2018-11-13 |
| CN108799477B true CN108799477B (en) | 2021-11-16 |
Family
ID=64054758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710309280.8A Active CN108799477B (en) | 2017-05-04 | 2017-05-04 | Adjusting mechanism for meshing clearance of worm and gear, speed reducing mechanism and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108799477B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105564495A (en) * | 2014-11-05 | 2016-05-11 | 上海汽车集团股份有限公司 | Electric power steering system and vehicle |
| CN206031465U (en) * | 2016-09-26 | 2017-03-22 | 安徽江淮汽车集团股份有限公司 | Snail rod support structure and electric power steering system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4868215B2 (en) * | 2006-01-13 | 2012-02-01 | 株式会社ジェイテクト | Electric power steering device |
| JP5136286B2 (en) * | 2008-08-21 | 2013-02-06 | 日本精工株式会社 | Electric power steering device |
| CN202089102U (en) * | 2011-05-06 | 2011-12-28 | 豫北(新乡)汽车动力转向器有限公司 | Automatic adjustment mechanism for gap of worm wheel and worm of electric power steering gear of automobile |
| DE102012103147A1 (en) * | 2012-04-12 | 2013-10-17 | Zf Lenksysteme Gmbh | LOS BEARING FOR A STEERING GEAR |
| 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 |
| JP2016211615A (en) * | 2015-04-30 | 2016-12-15 | 株式会社ジェイテクト | Worm reducer and steering device |
-
2017
- 2017-05-04 CN CN201710309280.8A patent/CN108799477B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105564495A (en) * | 2014-11-05 | 2016-05-11 | 上海汽车集团股份有限公司 | Electric power steering system and vehicle |
| CN206031465U (en) * | 2016-09-26 | 2017-03-22 | 安徽江淮汽车集团股份有限公司 | Snail rod support structure and electric power steering system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108799477A (en) | 2018-11-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102281674B1 (en) | Reducer for vehicle | |
| JP5645070B2 (en) | Electric power steering device | |
| US8381868B2 (en) | Electric power steering system | |
| US7401678B2 (en) | Electric power steering system | |
| EP1452419B1 (en) | Electric power steering device | |
| US20150075899A1 (en) | Electric power steering device | |
| EP1650452A2 (en) | Steering device | |
| US9777826B2 (en) | Worm biasing structure | |
| JP4979801B2 (en) | Worm speed reducer and electric power steering device | |
| JP4192626B2 (en) | Rack and pinion type steering device | |
| JP2016003760A (en) | Worm reduction gear and electric power steering device including the same | |
| CN108799477B (en) | Adjusting mechanism for meshing clearance of worm and gear, speed reducing mechanism and automobile | |
| JP5967420B2 (en) | Electric power steering device | |
| CN109649478B (en) | Electric steering worm gear | |
| JP6118603B2 (en) | Gear preload structure and electric power steering device | |
| JP2013184502A (en) | Electric power steering apparatus | |
| JP2014136437A (en) | Rack pinion type steering device | |
| JP5601415B2 (en) | Rack and pinion type steering gear unit | |
| CN111936758A (en) | Helical gear drive for an electromechanical servo steering gear with asymmetrical pre-fastened fixed bearings | |
| CN111201179B (en) | Electromechanical power steering system with helical gear drive and with compensation device for mounting a floating bearing on a gearbox | |
| CN219948299U (en) | Steering gear structure for vehicle and vehicle | |
| KR20170079881A (en) | Electrical Steering Apparatus and Method to assemble the same | |
| CN111683860B (en) | Steering gear, steering system and method for producing a pivot ring for a steering gear | |
| CN113847339A (en) | Bushing and power steering system | |
| JP2023058104A (en) | Electric assist device and worm damper for electric assist device |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |