KR101706859B1 - Damper integrated bearing assembly - Google Patents
Damper integrated bearing assembly Download PDFInfo
- Publication number
- KR101706859B1 KR101706859B1 KR1020150127007A KR20150127007A KR101706859B1 KR 101706859 B1 KR101706859 B1 KR 101706859B1 KR 1020150127007 A KR1020150127007 A KR 1020150127007A KR 20150127007 A KR20150127007 A KR 20150127007A KR 101706859 B1 KR101706859 B1 KR 101706859B1
- Authority
- KR
- South Korea
- Prior art keywords
- damper
- inner case
- bearing
- rack
- shape
- Prior art date
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Classifications
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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
- B62D5/04—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
- B62D5/0445—Screw drives
- B62D5/0448—Ball nuts
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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
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
- B62D5/046—Controlling the motor
- B62D5/0472—Controlling the motor for damping vibrations
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
- F16C27/04—Ball or roller bearings, e.g. with resilient rolling bodies
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/07—Fixing them on the shaft or housing with interposition of an element
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
- F16F15/1207—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon characterised by the supporting arrangement of the damper unit
- F16F15/1208—Bearing arrangements
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2326/00—Articles relating to transporting
- F16C2326/20—Land vehicles
- F16C2326/24—Steering systems, e.g. steering rods or columns
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Power Steering Mechanism (AREA)
- Support Of The Bearing (AREA)
Abstract
The present invention relates to a steering apparatus for a vehicle, and more particularly, to a steering apparatus for a vehicle, which comprises a rack having one side engaged with a pinion gear connected to a steering wheel of the vehicle and the other side having a thread on an outer circumferential surface thereof, a rack housing into which the other side of the rack is inserted, A ball nut disposed between the housing and the rack and linearly moving the rack in the direction of the central axis; a bearing inserted between the rack housing and the ball nut to rotatably support the ball nut; And a rubber-integrated damper including the inner case and the outer case integrally formed, the inner case including an inner case rotatably supporting the inner case and an outer case accommodating the inner case. According to the present invention, since the rubber is integrally formed in the damper, it can be easily assembled even in a place other than a professional manufacturer, and the assembling property is improved. In addition, it is possible to design such that the desired rigidity can be realized by changing the kind and thickness of the rubber, and there is an advantage that it can be designed in consideration of the tolerance with peripheral parts.
Description
The present invention relates to a damper-integrated bearing assembly, and more particularly, to a damper-integrated bearing assembly capable of improving assembling performance and achieving required rigidity by integrally forming a damper on a bearing.
Generally, an electric power steering device is a device that assists the steering force of a vehicle by driving an electric motor. Among them, the steering wheel is lightened when the vehicle speed is low, the steering stability is improved by weighting the steering wheel when the vehicle speed is high The rack-type power steering apparatus of the electric power steering apparatus is provided with a cylindrical housing in the left and right direction of the vehicle, and a rack is received in the housing so as to be linearly movable. Each end of the rack is supported by a ball joint Lt; / RTI > The rack is connected to a steering shaft connected to the steering wheel by a rack pinion mechanism. The rotary motion of the steering wheel is converted into linear motion by the rack pinion mechanism, and the rack is linearly moved.
A ball nut is rotatably supported on the outer periphery of the rack, and an electric motor having a rotation axis parallel to the axis of the ball nut is disposed around the rack. When the user operates the steering wheel, the electric motor is driven to assist the steering force.
An example of such an electric power steering device is disclosed in Korean Patent Registration No. 0835193, and a damping structure such as a bearing is provided to prevent vibration caused by driving a rack and a ball nut or noise due to external vibration.
However, such a conventional damping structure has a complicated assembling process, requires a long assembly time, and requires a special company to work because the components are separate structures. Further, in assembling the damping structure made of a separate structure, it is difficult to manage the tolerance with the surrounding components, and it is difficult to secure the necessary rigidity due to the structural limitations.
SUMMARY OF THE INVENTION An object of the present invention is to provide a damper-integrated bearing assembly capable of improving assemblability and achieving required rigidity by integrally forming a damper on a bearing.
The damper integrated bearing assembly according to the present invention includes a bearing for rotatably supporting an object to be rotated, a cylindrical inner case for rotatably supporting the bearing, and a damper having a cylindrical outer case for accommodating the inner case And the damper has a shape in which the inner case and the outer case are integrally formed, and both end portions of the cylindrical shape are bended toward the bearing.
The inner case includes a rubber material, and the outer case includes a metal material.
The damper is characterized in that protrusions and recesses are alternately formed at both ends of the cylindrical shape of the inner case and the outer case.
The protrusion may be one of a semicircular shape and a fan shape, and the recess may be a semicircular shape, a fan shape, or a straight shape.
The damper is configured to bend the protrusion provided at one side of the cylindrical shape to the bearing at a right angle, insert the bearing, and bend the protrusion provided at the other side of the cylindrical shape toward the bearing to house the bearing .
The electric power steering apparatus according to an embodiment of the present invention can easily assemble the damper even in a place other than a professional manufacturer by integrally forming the rubber in the damper, thereby improving the assemblability. In addition, it is possible to design such that the desired rigidity can be realized by changing the kind and thickness of the rubber, and there is an advantage that it can be designed in consideration of the tolerance with peripheral parts.
1 is a sectional view showing a part of an electric power steering apparatus,
FIG. 2 is a perspective view showing a damper-integrated bearing assembly according to an embodiment of the present invention, FIG.
3 is an exploded perspective view illustrating a damper-integrated bearing assembly according to an embodiment of the present invention.
Hereinafter, a damper integrated bearing assembly according to an embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a sectional view showing a part of an electric power steering apparatus, FIG. 2 is an assembled perspective view showing a damper-integrated bearing assembly according to an embodiment of the present invention, FIG. 3 is a perspective view showing a damper- Fig. 3 is an exploded perspective view showing the bearing assembly.
As shown in FIG. 1, the damper-integrated bearing assembly according to an embodiment of the present invention is for rotatably supporting a rotating object. For the sake of convenience, the electric power steering apparatus of a vehicle will be described as an example (However, the present invention is not limited to this embodiment, but may be variously applied to bearings and dampers where necessary).
The electric
The
The
The outer circumferential surface of the
The
2 and 3, the bearing assembly is composed of a
The
Here, the material and thickness of the
The
The reason why the
Bending the edge of the cylindrical damper takes a long time and is difficult to process. Therefore, if the edges of the
One end of the
When the
An embodiment of the present invention described above and shown in the drawings should not be construed as limiting the technical idea of the present invention. The scope of the present invention is limited only by the matters described in the claims, and those skilled in the art can improve and modify the technical spirit of the present invention in various forms. Accordingly, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
10: Electric power steering device
100: rack housing 200: rack
300: pulley assembly 400: ball nut
500: damper 510: outer case
530:
500b: concave portion 600: bearing
Claims (5)
And a damper having a cylindrical inner case for rotatably supporting the bearing and a cylindrical outer case for accommodating the inner case,
The damper is characterized in that the inner case and the outer case are integrally formed, and both end portions of the cylindrical shape are bended toward the bearing.
Wherein the inner case is formed of a single layer of the same material or a plurality of layers of different materials, and when the inner case is formed of a plurality of layers, the porosity of the plurality of layers is different.
Wherein the inner case includes a rubber material, and the outer case includes a metal material.
Wherein the damper has protrusions and recesses alternately formed at both ends of the cylindrical shape of the inner case and the outer case.
Wherein the protrusion is one of a semicircular shape and a fan shape, and the recess is one of a semicircular shape, a fan shape, and a straight shape.
The damper is configured to bend the protrusion provided at one side of the cylindrical shape to the bearing at a right angle, insert the bearing, and bend the protrusion provided at the other side of the cylindrical shape toward the bearing to house the bearing A damper-integrated bearing assembly characterized by:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150127007A KR101706859B1 (en) | 2015-09-08 | 2015-09-08 | Damper integrated bearing assembly |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150127007A KR101706859B1 (en) | 2015-09-08 | 2015-09-08 | Damper integrated bearing assembly |
Publications (1)
Publication Number | Publication Date |
---|---|
KR101706859B1 true KR101706859B1 (en) | 2017-02-15 |
Family
ID=58112300
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020150127007A KR101706859B1 (en) | 2015-09-08 | 2015-09-08 | Damper integrated bearing assembly |
Country Status (1)
Country | Link |
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KR (1) | KR101706859B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102553662B1 (en) | 2022-06-30 | 2023-07-12 | 조범종 | Bearing housing with bearing outer ring and auxiliary footrest system for vehicle including the same |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100835193B1 (en) | 2003-10-29 | 2008-06-04 | 주식회사 만도 | Electric power steering system |
KR20130003312A (en) * | 2011-06-30 | 2013-01-09 | 한국델파이주식회사 | Electric power steering apparatus |
KR20150028939A (en) * | 2013-09-06 | 2015-03-17 | 주식회사 디엠씨 | Electric steering damping Bush |
-
2015
- 2015-09-08 KR KR1020150127007A patent/KR101706859B1/en active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100835193B1 (en) | 2003-10-29 | 2008-06-04 | 주식회사 만도 | Electric power steering system |
KR20130003312A (en) * | 2011-06-30 | 2013-01-09 | 한국델파이주식회사 | Electric power steering apparatus |
KR20150028939A (en) * | 2013-09-06 | 2015-03-17 | 주식회사 디엠씨 | Electric steering damping Bush |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102553662B1 (en) | 2022-06-30 | 2023-07-12 | 조범종 | Bearing housing with bearing outer ring and auxiliary footrest system for vehicle including the same |
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Payment date: 20191219 Year of fee payment: 4 |