CN102874302A - Electrical steering device - Google Patents
Electrical steering device Download PDFInfo
- Publication number
- CN102874302A CN102874302A CN2012102324472A CN201210232447A CN102874302A CN 102874302 A CN102874302 A CN 102874302A CN 2012102324472 A CN2012102324472 A CN 2012102324472A CN 201210232447 A CN201210232447 A CN 201210232447A CN 102874302 A CN102874302 A CN 102874302A
- Authority
- CN
- China
- Prior art keywords
- axial region
- worm
- worm screw
- screw axial
- shifting board
- 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.)
- Granted
Links
Images
Classifications
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- 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
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- 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
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/20—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle specially adapted for particular type of steering gear or particular application
- B62D5/24—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle specially adapted for particular type of steering gear or particular application for worm type
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- 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
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- 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
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- 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
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
- F16H2057/0213—Support of worm gear shafts
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)
- Power Steering Mechanism (AREA)
Abstract
The invention relates to an electronic steering device, comprising a worm shaft part possessing a worm gear; a worm gear part of which the peripheral surface is meshed with the worm gear to rotate; a shell part wrapping the worm shaft part; and a supporting part arranged on the shell part and supporting the worm shaft part.
Description
Technical field
The present invention relates to a kind of column assist device, relate in particular to the column assist device that absorbs the impact in the worm gear transferring power process and reduction noise.
Background technology
Generally speaking, the column assist device is according to car speed sensor and turn to the condition of service of the vehicle of the perception such as torque sensor, makes the electronic control package CD-ROM drive motor, the steering effort of driver assistance, make chaufeur can keep the best to turn to the turning efficiency of sense thereby provide, when low cruise, provide slim and graceful, comfortable steering state, when high-speed cruising, sedate steering state is provided, in emergency circumstances sudden, can tackle this, realize turning to rapidly etc.
In the column assist device, the worm shaft that possesses motor, is connected with motor and rotates, with the worm gear of worm shaft engagement rotation.At this moment, worm gear is installed on the steering shaft that the bearing circle rotational force to driver's operation transmits.
Therefore, the rotational force of the worm shaft that drive to produce by means of motor is additional to the bearing circle rotational force of driver's operation, passes to steering shaft, thereby can make the driving environment that turns to of chaufeur keep soft, stable.
2010-0009380 number (2010.01.27 is open, denomination of invention: open the gear engagement states holding device of electric power steering device for vehicles) at Republic of Korea's publication communique for background technology of the present invention.
Summary of the invention
(technical matters that will solve)
With regard to column assist device in the past, mesh the worm shaft that rotates with worm gear and keep the state of engagement by means of spring, but the problem that exists is that if a little less than the load of spring, then noise is serious, if the load of spring is strong, then turning to of bearing circle felt decline.
Therefore, need to improve this.
The present invention researches and develops for improving as above problem, and its purpose is to provide a kind of column assist device, and when using than the little spring load, impact-absorbing in transmittance process reduces noise.
(means of dealing with problems)
For reaching as mentioned above purpose, the invention provides a kind of column assist device, it is characterized in that comprising: the worm screw axial region possesses gear on worm; Worm gear section, outer peripheral face is engaged in described gear on worm and is rotated; Housing department wraps described worm screw axial region; And the support portion, be installed on described housing department, described worm screw axial region is supported.
Feature of the present invention is that also described support portion comprises: adapter plate, be installed on described housing department, and be formed with the dip plane; Shifting board, move the dip plane that contacts described adapter plate, and described worm screw axial region is supported; Pressure plate is exerted pressure to described shifting board; Elastic body, the described pressure plate of resilient mounting; And supporter, support described elastic body.
Feature of the present invention also is: on the dip plane of described adapter plate, be formed with fixedly coating; On described shifting board, be formed with the mobile coating that contacts with described fixedly coating.
Feature of the present invention also is: on described shifting board, be formed with guiding groove; On described pressure plate, protrude and be formed with the guide hump that inserts described guiding groove.
(effect of invention)
The support portion of column assist device of the present invention utilizes inclined plane principle, and the worm screw axial region is supported, and can with less load, reduce the effect of the knock between worm screw axial region and worm gear section thereby have.
Description of drawings
Fig. 1 is the accompanying drawing that briefly shows the column assist device of one embodiment of the invention.
Fig. 2 is the exploded perspective view that briefly shows the support portion in the column assist device of one embodiment of the invention.
Fig. 3 is the accompanying drawing that briefly shows the elastic body swelling state of the support portion in the column assist device of one embodiment of the invention.
Fig. 4 is the accompanying drawing that briefly shows the elastomer contracts state of the support portion in the column assist device of one embodiment of the invention.
Fig. 5 is the accompanying drawing of the state that the worm screw axial region supported when travelling on dangerous road of the support portion that briefly shows the column assist device of one embodiment of the invention.
(label declaration)
10: worm screw axial region 20: worm gear section
30: housing department 40: support portion
41: adapter plate 42: shifting board
43: pressure plate 44: elastic body
45: supporter
The specific embodiment
The embodiment of column assist device of the present invention is described with reference to the accompanying drawings.In this process, the thickness of the lines that show in the accompanying drawing or the size of structural element etc. are for the definition on illustrating may show turgidly with facility.In addition, the term that term described later defines as considering function in the present invention may be different because of user, operator's intention or convention.Therefore, should be determined based on the content of this specification for the definition of this term.
Fig. 1 is the accompanying drawing that briefly shows the column assist device of one embodiment of the invention, Fig. 2 is the exploded perspective view that briefly shows the support portion in the column assist device of one embodiment of the invention, Fig. 3 is the accompanying drawing that briefly shows the elastic body swelling state of the support portion in the column assist device of one embodiment of the invention, Fig. 4 is the accompanying drawing that briefly shows the elastomer contracts state of the support portion in the column assist device of one embodiment of the invention, and Fig. 5 is the accompanying drawing of the state that the worm screw axial region supported when travelling on dangerous road of the support portion that briefly shows the column assist device of one embodiment of the invention.
To shown in Figure 5, in the column assist device 1 of one embodiment of the invention, possess worm screw axial region 10, worm gear section 20, housing department 30 and support portion 40 such as Fig. 1.
Outer peripheral face at worm screw axial region 10 is formed with gear on worm 11.The outer peripheral face of worm gear section 20 and gear on worm 11 engagement rotations.Lining section 30 rotates with the inner peripheral surface engagement of worm gear section 20.
Worm screw axial region 10 and worm gear section 20 are built in the housing department 30, and motor part 50 is incorporated into housing department 30.The motor drive shaft that possesses in this motor part 50 is connected with worm screw axial region 10, makes 10 rotations of worm screw axial region.
In the support portion 40 of one embodiment of the invention, possess adapter plate 41, shifting board 42, pressure plate 43, elastic body 44 and supporter 45.
Move the dip plane of shifting board 42 contact adapter plates 41.This shifting board 42 has the shape corresponding with the dip plane of adapter plate 41, contacts with worm screw axial region 10, and worm screw axial region 10 is supported.
One end portion supports pressure plate 43 of elastic body 44, the other end is supported supporter 45.
Therefore, if because of with the interference of worm gear section 20, worm screw axial region 10 is exerted pressure to shifting board 42, then shifting board 42 is along the dip plane, it is mobile to slide at adapter plate 41, elastic body 44 shrinks.
At this moment, adapter plate 41 and shifting board 42 utilize the principle on inclined-plane, consist of and to make worm screw axial region 10 press the load of worm gear section 20 (F) to realize minimized structure, minimize the Best Point (with reference to Fig. 3) of required load (F) thereby can find as preventing the load (W) that knock (rattle) supports shifting board 42 and making worm screw axial region 10 with the friction of 20 in worm gear section realization.
That is, because F/W=tan θ, so, F=W*tan θ.
For example, the leaning angle of supposing shifting board 42 is 30 degree, so, and F=0.57W.
On the other hand, on the dip plane of adapter plate 41, be coated with fixedly coating 41a, on the dip plane of shifting board 42, be coated with mobile coating 42a.
In order under shifting board 42 and adapter plate 41 contact conditions, can to slide smoothly, as fixedly coating 41a and mobile coating 42a, the relatively low material of use friction coefficient.
Be formed with guiding groove 46 at shifting board 42, protrude in pressure plate 43 and be formed with the guide hump 47 that inserts guiding groove 46.
Because guide hump 47 inserts the guiding groove 46 of shifting board 42, therefore, pressure plate 43 keeps the coupled condition with shifting board 42.In addition, the guide hump 47 of pressure plate 43 inserts along guiding groove 46, prevents rocking of pressure plate 43.
Be formed with insertion groove 48 in pressure plate 43.In this insertion groove 48, be inserted with an end of elastic body 44.And, on supporter 45, protrude and be formed with support protrusion 49.Elastic body 44 the other end that this support protrusion 49 is inserted coiled type prevent rocking of elastic body 44.
The following describes the effect of the column assist device with the one embodiment of the invention that as above consists of.
Be engaged in worm gear section 20 under the state of worm screw axial region 10, shifting board 42 is carrying out when face contacts with adapter plate 41, worm screw axial region 10 is supported, and the load of elastic body 44 passes to shifting board 42 by pressure plate 43, supports shifting board 42 (with reference to Fig. 3).
Under above-mentioned state, if because of with the interference of worm gear section 20 at worm screw axial region 10 vibration-generatings, then 10 pairs of shifting boards 42 of worm screw axial region are exerted pressure.
Shifting board 42 is as being exerted pressure by worm screw axial region 10, and then shifting board 42 is by means of the movement of sliding with adapter plate 41 contacting of dip plane, and elastic body 44 shrinks (with reference to Fig. 4).
In this contraction of elastic body 44 and expand repeatedly carry out in, the impact of worm screw axial region 10 is absorbed, 20 states of keeping in touch of worm screw axial region 10 and worm gear section.
On the other hand, if cause reverse Input Forces load excessive because travelling on dangerous road, worm gear section 20 vibration-generatings, then worm screw axial region 10 passes to shifting board 42 (with reference to Fig. 5) to rapid impact load.
At this moment, the load that puts on shifting board 42 can not disperse to the dip plane, and only to the direction of vibration transmission of worm screw axial region 10, the slip movement of shifting board 42 is restricted, thereby can suppress moving about of worm screw axial region 10, prevent that 20 in worm screw axial region 10 and worm gear section from the knock abnormal sound occuring.
The present invention is illustrated with reference to embodiment shown in the drawings, but this is example, and the person of ordinary skill in the field it is to be understood that can derive various deformation and other impartial embodiment thus.
Claims (4)
1. column assist device is characterized in that comprising:
The worm screw axial region possesses gear on worm;
Worm gear section, outer peripheral face is engaged in described gear on worm and is rotated;
Housing department wraps described worm screw axial region; And
The support portion is installed on described housing department, and described worm screw axial region is supported.
2. column assist device according to claim 1 is characterized in that, described support portion comprises:
Adapter plate is installed on described housing department, is formed with the dip plane;
Shifting board, move the dip plane that contacts described adapter plate, and described worm screw axial region is supported;
Pressure plate is exerted pressure to described shifting board;
Elastic body, the described pressure plate of resilient mounting; And
Supporter supports described elastic body.
3. column assist device according to claim 2 is characterized in that:
On the dip plane of described adapter plate, be formed with fixedly coating;
On described shifting board, be formed with the mobile coating that contacts with described fixedly coating.
4. column assist device according to claim 3 is characterized in that:
On described shifting board, be formed with guiding groove;
On described pressure plate, protrude and be formed with the guide hump that inserts described guiding groove.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2011-0069060 | 2011-07-12 | ||
| KR1020110069060A KR20130008357A (en) | 2011-07-12 | 2011-07-12 | Electric power steering device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102874302A true CN102874302A (en) | 2013-01-16 |
| CN102874302B CN102874302B (en) | 2016-08-03 |
Family
ID=47475887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210232447.2A Active CN102874302B (en) | 2011-07-12 | 2012-07-05 | Column assist device |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR20130008357A (en) |
| CN (1) | CN102874302B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113442999A (en) * | 2020-03-27 | 2021-09-28 | 吴震洋 | Vehicle steering device |
-
2011
- 2011-07-12 KR KR1020110069060A patent/KR20130008357A/en not_active Application Discontinuation
-
2012
- 2012-07-05 CN CN201210232447.2A patent/CN102874302B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113442999A (en) * | 2020-03-27 | 2021-09-28 | 吴震洋 | Vehicle steering device |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20130008357A (en) | 2013-01-22 |
| CN102874302B (en) | 2016-08-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |