CN202863531U - Worm damping structure for steering system - Google Patents
Worm damping structure for steering system Download PDFInfo
- Publication number
- CN202863531U CN202863531U CN2012203206479U CN201220320647U CN202863531U CN 202863531 U CN202863531 U CN 202863531U CN 2012203206479 U CN2012203206479 U CN 2012203206479U CN 201220320647 U CN201220320647 U CN 201220320647U CN 202863531 U CN202863531 U CN 202863531U
- Authority
- CN
- China
- Prior art keywords
- elastic body
- bearing part
- damping structure
- worm
- worm screw
- 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.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/16—Steering columns
- B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
- B62D1/19—Steering columns yieldable or adjustable, e.g. tiltable incorporating energy-absorbing arrangements, e.g. by being yieldable or collapsible
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/16—Steering columns
-
- 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
- B62D3/12—Steering gears mechanical of rack-and-pinion 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
- 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)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power Steering Mechanism (AREA)
- Support Of The Bearing (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The utility model provides a worm damping structure for a steering system, which can effectively absorb axial and vertical loads of the worm. The damping structure comprises a worm, an elastic body, a covering component and a panel, wherein the worm is arranged in a casing and is rotationally meshed with a worm gear, a plurality of bearing pieces are arranged at two ends of the worm to rotate the worm; the elastic body surrounds the outer ring of one of the bearing pieces and is made of a material which can elastically deform along with the axial and vertical loads delivered by bearing pieces; and the covering component and the panel are arranged on two sides of the elastic body to surround the elastic body.
Description
Technical field
The utility model relates to a kind of worm screw damping structure for steering swivel system, relate in particular to a kind of axial load of supporting, sorption is in the vibrations of bearing and worm screw effectively, and can be with longitudinal travel elastic deformation to improve the worm screw damping structure that is used for steering swivel system of its durability.
Background technology
Motro drivien power steering (Motor driven power steering, MDPS) system has replaced typical hydraulic power steering system, provides assisted diversion power with electro-motor and ECU Electronic Control Unit.Particularly, the motor of MDPS system and ECU Electronic Control Unit have replaced the hydraulic unit of hydraulic power steering system, for example oil groove (oil tank), pump (pump) and flexible pipe (hose).
Because the volume of MDPS system and weight are less than volume and the weight of hydraulic power steering system, the MDPS system is widely used in vehicle.
Described MDPS system is connected to change speed gear box with control wheel, and comprises motor.An end that is connected to the axis of a cylinder of motor is connected to described change speed gear box by Hooke's coupling.The two ends of axle are couple to ball-and-socket type joint, and by the mode sway of described change speed gear box with rack and pinion.Described ball-and-socket type joint is connected to respectively the steering swivel (steering swivel) of left and right sides bar wheel by pipe link.
The motor part of described MDPS system comprises housing, wherein is connected to the central authorities that the axis of a cylinder of described control wheel inserts worm gear.Described worm gear is engaged in worm screw, and this worm screw is couple to described motor, and comprises the screw thread that is positioned on its outer peripheral face.
Can be along with the variation of the acceleration/deceleration of described motor and moment of torsion and increases in gap between the described worm and wheel, so that the engagement between the described worm and wheel is unstable and cause noise problem.
When described worm screw was installed on the described worm gear, radial weight can put on described worm screw.In addition, when described worm gear rotates, put on described worm screw as the axial load meeting of antagonistic force.
Along with the improvement of vehicle performance, the anti-evil compensation (tolerance compensating) of axial load and radial weight is very important for avoiding noise and raising durability.
The utility model content
The utility model provides a kind of worm screw damping structure for steering swivel system, and it can absorb effectively by the axial load of worm screw and the caused vibrations of radial weight.
The utility model also provides a kind of worm screw damping structure for steering swivel system, and it has the structure-improved that can resist axial load and radial weight, to improve the durability of parts.
According to one side of the present utility model, the damping structure that is used for steering swivel system is provided, comprising: worm screw, be disposed in the housing, and be engaged in worm gear rotationally, wherein a plurality of bearing parts are arranged at the two ends of described worm screw, so that described worm screw is rotated; Elastic body, around the outer ring of one of them bearing part, and described elastic body is along with axially and radial weight and the material of elastic deformation is formed by meeting; Cover panel is formed by steel, and be fixed projection institute of described cover panel supports, and covers described elastomeric sidepiece, and described fixed lobe is to be formed at the interior stepped projection of described housing; And plate covers described elastomeric the other side.
Described elastic body may comprise: the first elastic body is face with the outer peripheral face of described corresponding bearing part and contacts, to center on described bearing part; And the second elastic body and the 3rd elastic body are disposed at the described first elastomeric both sides, with the both sides at the edge that covers described bearing part.
Described elastic body may have the structure of integraty, comprising: central portion, around the outer peripheral face of corresponding bearing part; And, curve, by the bending two ends of described central portion, and the both sides of extending the edge that covers described bearing part.
Described elastic body can be formed by elastomeric material or urethane material.
A plurality of projections may be arranged on the described elastomeric outside face, and meeting elastic deformation, and, a plurality of storage tanks may be arranged on the inside face of described elastomeric described cover panel and described plate, and has a plurality of tolerances space, to allow the elastic deformation of described a plurality of projections.
Description of drawings
Describe example embodiment of the present utility model in detail referring to accompanying drawing, will more understand above-mentioned and further feature and advantage of the present utility model, wherein:
Fig. 1 is the block diagram according to the worm screw damping structure of a kind of steering swivel system of embodiment of the present utility model;
Fig. 2 is the section-drawing that the damping structure of Fig. 1 is couple to the state of worm screw;
Fig. 3 is the exploded view of elastic body, cover panel and the plate of the damping structure of Fig. 1;
Fig. 4 is the section-drawing according to the worm screw damping structure of a kind of steering swivel system of another embodiment of the present utility model;
Fig. 5 is the section-drawing of the amended example of embodiment of Fig. 4;
Fig. 6 is the section-drawing according to the worm screw damping structure of the steering swivel system of another embodiment of the present utility model;
Fig. 7 is the enlarged drawing of the main portion of Fig. 6;
The graphical representation of Fig. 8 A measures the resulting level of noise of typical damping structure; And
The graphical representation of Fig. 8 B measures the resulting level of noise of damping structure of another embodiment of the present utility model.
The specific embodiment
In correlation technique, by steel and the integrated outer peripheral face that may be equipped on working shaft with the damper of absorbing vibration of elastomeric material, and in abutting connection with the inner ring of bearing.In this case, the axial load that is sent by worm screw may make steel and elastomeric material mutually mobile, makes deformation of steel, and destroys elastomeric material.
In addition, if axial load is continued to be sent to described damper, steel may separate with combination between the elastomeric material.
In addition, the typical aggregation type damper of this kind only absorbs axial load, and does not absorb radial weight, can produce noise.
The utility model provides a kind of worm screw damping structure for steering swivel system, and it can absorb axial load and radial weight that worm screw transmits effectively, improves the durability of parts, and reduces noise.
The accompanying drawing of below will arranging in pairs or groups is described preferred embodiment.
As shown in Figures 1 to 3, the damping structure of a kind of steering swivel system of foundation embodiment of the present utility model comprises: worm screw 20, be disposed in the housing 10, and be engaged in rotationally worm gear 30, wherein bearing part 40 and 50 is arranged on the two ends of described worm screw 20 so that worm screw 20 rotations; Elastic body 100 is disposed at outside the outer ring of bearing part 50 with around the outer ring, and elastic body 100 is by the axial load that can transmit with bearing part 50 and radial weight and the material of elastic deformation is made; And cover panel 210 and plate 220 are disposed at the both sides of described elastic body 100, with around described elastic body 100.
For example, in order to form elastic body 100, make it can be with axial load and radial weight and the material of elastic deformation can be elastomeric material or urethane material.
Described cover panel 210 and described plate 220 are formed by steel, to support the load that transmits by described worm screw 20 and described bearing part 50.
Described bearing part 50 is adjacent to the motor (not shown).
Described elastic body 100 comprises: the first elastic body 110 is face with the outer peripheral face of described bearing part 50 and contacts, to center on described bearing part 50; And the second elastic body 120 and the 3rd elastic body 130 are disposed at the left and right sides of described the first elastic body 110, with two sidepieces at the edge that coats described bearing part 50.
That is to say, the part side of described the second elastic body 120 and the 3rd elastic body 130 can be face with the sidepiece that described bearing part 50 is adjacent to its outer peripheral face and contact.
Therefore, be sent to described the second elastic body 120 and the 3rd elastic body 130 from the axial load meeting of worm screw 20 by bearing part 50, and can be sent to described the first elastic body 110 by bearing part 50 from the radial weight of worm screw 20.Thus, not only the first to the 3rd elastic body 110,120 and 130 can absorb described load indirectly, and described load also can be dispersed.
Below the assembly operation of aforementioned damping structure will be described according to embodiment of the present utility model.
As shown in Figure 3, described the first elastic body 110 is disposed at outside the bearing part 50, and with the outer peripheral face around bearing part 50, and bearing part 50 is disposed at the end of worm screw 20; Described the second elastic body 120 and the 3rd elastic body 130 are disposed at the left and right sides of the outer ring of bearing part 50; Cover panel 210 is around the outer setting (being positioned at a side of bearing part 50) of the first elastic body 110 and the 3rd elastic body 130; Then, plate 220 is disposed at outside the second elastic body 120 and (is positioned at the opposite side of described bearing part 50).
Afterwards, snap ring 15 is coupled to plate 220 with the outside of support plate 220, fully to assemble described damping structure.
The operation of the damping structure of the described completed assembled of foundation.Described worm screw 20 in described worm gear 30, is sent to described worm gear 30 with propulsive effort by described motor by tooth mesh, to provide assisted diversion power to being connected to the axis of a cylinder (not shown) of described worm gear 30 with control wheel.
At this moment, when axial load is sent to described worm screw 20, described the second elastic body 120 and the 3rd elastic body 130 meeting elastic deformations, the vibrations that cause to absorb described axial load.In addition, when radial weight is sent to described worm screw 20, described the first elastic body 110 meeting elastic deformations that center on the outer peripheral face of bearing part 50, the vibrations that cause to absorb described radial weight.
In addition, in order to absorb described vertical and vibrations that axial load causes, not only described the first to the 3rd elastic body 110,120 and 130 can be along with described vertical with axial load and elastic deformation, described the first to the 3rd elastic body 110,120 and 130 also can with described vertically and axial load be sent to described cover panel 210 and plate 220.
Described cover panel 210 and described plate 220 support the described axial and radial weight that transmits by described elastic body 100.
Fig. 4 is the section-drawing according to the damping structure of another embodiment of the present utility model.As shown in Figure 4, the first to the 3rd elastic body 110,120 and 130, cover panel 210 and the plate 220 of the present embodiment are identical with previous embodiment, except: projection 112,122 and 132 protrudes from described the first to the 3rd elastic body 110,120 and 130 outside face; And the storage tank 212 and 222 on the inside face of described plate 220 and cover panel 210 has the tolerance space (tolerance space) around described elastic body 100, to allow the distortion of projection 112,122 and 132.
Described protruding 112,122 and 132 may have different shapes, for example triangular pyramidal (triangular pyramid shape), circular (circular shape) and rectangle (rectangular shape).
In the present embodiment and previous embodiment, represent similar assembly with similar Reference numeral, and associated description will be omitted.
Described the first to the 3rd elastic body 110,120 and 130 comprises respectively the projection 112,122 and 132 that protrudes from its outside face.Projection 112,122 and 132 is placed in the described storage tank 212 and 222 tolerance space on the inside face of described cover panel 210 and plate 220.
Accordingly, because the first to the 3rd elastic body 110,120 and 130 meeting elastic deformations, when axial or radial weight be sent to described the first to the 3rd elastic body 110,120 and 130 the time, described protruding 112,122 and 132 can be in the tolerance space internal strain of described storage tank 212 and 222.
Fig. 5 is the section-drawing of the amended example of embodiment of Fig. 4.As shown in Figure 5, a plurality of protruding 114 inside faces that are arranged at described the first elastic body 110.So, described protruding 112 and 114 outside face and the inside faces that are separately positioned on described the first elastic body 110.
That is to say, when radial weight was sent to described the first elastic body 110, described protruding 112 and 114 can be towards the tolerance geometric distortion of described storage tank 212, to absorb and to disperse described radial weight.
Therefore, the durability of described the first elastic body 110 can be enhanced.
Fig. 6 and 7 is the section-drawings according to the damping structure of another embodiment of the present utility model.Shown in Fig. 6 and 7, the elastic body 100 of the present embodiment is the structure of integral type, and is different from the elastic body 100 of previous embodiment.More specifically, the integral structure of the elastic body 100 of the present embodiment comprises: around the central portion 100A of bearing part 50 and by curve 100B and the 100C of the bending two ends of central portion 100A, described curve 100B and 100C extend the both sides that cover described bearing part 50.
In other words, described elastic body 100 has single ring architecture, and wherein curve 100B and 100C are that face contacts with the both sides at the edge, outer ring of bearing part 50.
Therefore, the shape of elastic body 100 can change along with a plurality of embodiment of the present utility model.
According to previous embodiment, described elastic body 100 is around the edge of bearing part 50, and cover panel 210 and plate 220 are around the outside of described elastic body 100.Therefore, by vertical and axial load is caused and the vibrations that are sent to described worm screw 20 can be absorbed, with the durability of the parts that improve described damping structure, and reduce noise.
The minimizing of described noise is clearly shown among Fig. 8 A and the 8B.The graphical representation of Fig. 8 A measures has the resulting level of noise of damping structure of typical worm screw, and the graphical representation of Fig. 8 B measures the resulting level of noise of damping structure of the worm screw with embodiment of the present utility model.
According to above-described embodiment, elastic body is arranged at outside the bearing part, with around described bearing part, and elastic body is along with the vertical material that is out of shape with axial load that transmits by worm screw and described bearing part forms, with effectively absorption and dissipate shock by meeting.
In addition, described elastic body comprises one or more projection, therefore can effectively absorb the vertical and axial load that is transmitted to absorb and to disperse by the vertical vibrations that caused with axial load that are transmitted, and reduces noise, and the durability of raising parts.
Claims (4)
1. damping structure that is used for steering swivel system is characterized in that comprising:
Worm screw is disposed in the housing, and is engaged in worm gear rotationally, and wherein a plurality of bearing parts are arranged at the two ends of described worm screw, so that described worm screw is rotated;
Elastic body, around the outer ring of one of them bearing part, and described elastic body is along with axially and radial weight and the material of elastic deformation is formed by meeting;
Cover panel is formed by steel, and be fixed projection institute of described cover panel supports, and covers described elastomeric sidepiece, and described fixed lobe is to be formed at the interior stepped projection of described housing; And
Plate covers described elastomeric the other side.
2. damping structure according to claim 1 is characterized in that described elastic body comprises:
The first elastic body is face with the outer peripheral face of described corresponding bearing part and contacts, to center on described bearing part; And
The second elastic body and the 3rd elastic body are disposed at the described first elastomeric both sides, with the both sides at the edge that covers described bearing part.
3. damping structure according to claim 1 is characterized in that described elastic body has the structure of integraty, comprising:
Central portion is around the outer peripheral face of corresponding bearing part; And
Curve, by the bending two ends of described central portion, and the both sides of extending the edge that covers described bearing part.
4. each described damping structure in 3 according to claim 1 is characterized in that a plurality of projections are arranged on the described elastomeric outside face, and can elastic deformation, and
A plurality of storage tanks are arranged on the inside face of described elastomeric described cover panel and described plate, and have a plurality of tolerances space, to allow the elastic deformation of described a plurality of projections.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020110065771A KR101304871B1 (en) | 2011-07-04 | 2011-07-04 | Wormshaft damping structure of steering system |
| KR10-2011-0065771 | 2011-07-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202863531U true CN202863531U (en) | 2013-04-10 |
Family
ID=47836172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203206479U Expired - Lifetime CN202863531U (en) | 2011-07-04 | 2012-07-03 | Worm damping structure for steering system |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101304871B1 (en) |
| CN (1) | CN202863531U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106995002A (en) * | 2015-12-24 | 2017-08-01 | 株式会社万都 | The decelerator of electric power-assisted steering apparatus |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102087590B1 (en) | 2015-12-31 | 2020-04-14 | 남양넥스모 주식회사 | Worm wheel for motor driven power steering |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100883554B1 (en) * | 2006-12-28 | 2009-02-12 | 남양공업주식회사 | Electric Power Steering System having Compensational Means of Free Apartness of Worm Shaft |
| KR101298117B1 (en) * | 2011-06-30 | 2013-08-21 | 한국델파이주식회사 | Electric power steering apparatus |
-
2011
- 2011-07-04 KR KR1020110065771A patent/KR101304871B1/en active IP Right Grant
-
2012
- 2012-07-03 CN CN2012203206479U patent/CN202863531U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106995002A (en) * | 2015-12-24 | 2017-08-01 | 株式会社万都 | The decelerator of electric power-assisted steering apparatus |
| CN106995002B (en) * | 2015-12-24 | 2019-03-19 | 株式会社万都 | The retarder of electric power steering apparatus |
| US10351163B2 (en) | 2015-12-24 | 2019-07-16 | Mando Corporation | Reducer of electric power steering apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20130004630A (en) | 2013-01-14 |
| KR101304871B1 (en) | 2013-09-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130410 |