WO2005054036A1 - 車両用操舵装置 - Google Patents
車両用操舵装置 Download PDFInfo
- Publication number
- WO2005054036A1 WO2005054036A1 PCT/JP2004/017766 JP2004017766W WO2005054036A1 WO 2005054036 A1 WO2005054036 A1 WO 2005054036A1 JP 2004017766 W JP2004017766 W JP 2004017766W WO 2005054036 A1 WO2005054036 A1 WO 2005054036A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- steering
- vehicle
- housing
- thrust bearing
- shaft
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
- F16C25/06—Ball or roller bearings
-
- 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
- B62D5/0403—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 constructional features, e.g. common housing for motor and gear box
-
- 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
- B62D5/0421—Electric motor acting on or near steering gear
-
- 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
-
- 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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
- F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
- F16C19/181—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
- F16C19/183—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
- F16C19/184—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement
-
- 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
Definitions
- the present invention motion-converts the rotation of a steering motor driven according to the operation of a steering member, transmits the rotation to a steering shaft in a steering mechanism, and moves the steering shaft in the axial direction to perform steering.
- the present invention relates to a vehicle steering system configured to
- an operation of a steering member (generally, a rotation operation of a steering wheel) performed by a driver is transmitted to a steering shaft in a steering mechanism, and a wheel for steering is operated by the operation of the steering shaft. It is performed by steering (generally, the left and right front wheels).
- a steering motor is attached to a steering mechanism mechanically coupled to the steering member, and a steering motor driven according to the operation of the steering member is provided.
- An electric power steering apparatus has been put into practical use that transmits steering torque of a steering wheel to a steering shaft in a steering mechanism and assists steering performed by mechanical transmission of steering members to the steering shaft.
- the steering motor is attached to the steering mechanism mechanically separated from the steering member, and only the rotational force of the steering motor driven according to the operation of the steering member is transmitted to the steering shaft in the steering mechanism.
- a separate steering device which is a so-called steer-by-wire steering device, has been developed.
- the rotary cylinder inside the housing receives a large thrust force as motion is converted by the screw mechanism, so at least on one side in the axial direction,
- the bearing is supported by a thrust bearing such as an contact ball bearing, but in order to obtain a desired thrust load capability at this support portion, a predetermined preload is applied to the thrust bearing, and the thrust bearing is provided inside the housing. It is necessary to firmly fix it so that it can not move in the axial direction.
- the housing for supporting the rotary cylinder is inlay-fitted at the outside of the holding portion of the thrust bearing for supporting one side of the rotary cylinder. Divide the first and second housing into pieces, screw the fixing nut into the screw groove provided on the inner surface of the holding part, tighten it on the thrust bearing's side, and press the other side against the end face of the holding part.
- the fixed structure to hold is adopted.
- An object of the present invention is to provide a vehicle steering system capable of obtaining a steering load capability and stably performing a steering operation by transmission from a steering motor.
- a steering apparatus for a vehicle wherein a screw mechanism is configured between the steering shaft and the steering shaft that moves in the axial direction for steering.
- a vehicle in which a housing that supports a cylinder coaxially with the steering shaft is divided into first and second housings that are inlay fitted outside the holding portion of a thrust bearing that thrusts the rotary cylinder.
- a gap is set in part of the blow fitting portion provided on the outside of the holding portion of the thrust bearing that supports the rotary cylinder, and the fixing nut is tightened on the inside of the gap setting portion.
- the screw mechanism in the first aspect is formed on a thread groove formed on an outer periphery of the steering shaft and an inner periphery of the rotary cylinder. It is characterized in that it is a ball screw mechanism in which a screw groove is screwed through a large number of balls.
- a steering apparatus for a vehicle according to a third aspect of the present invention is characterized in that the reverse side force of the thrust bearing according to the first aspect is provided with a retaining ring that contacts the end face of the fixing nut. .
- a steering apparatus for a vehicle according to a fourth invention of the present invention is characterized in that the thrust bearing force in the first invention is a double-row angilla contact contact ball bearing in which the outer ring clamped by the fixing nut is common. I assume.
- a steering apparatus for a vehicle according to a fifth aspect of the present invention is the thrust according to the first aspect of the present invention.
- the bearings are characterized in that they are shield bearings provided with shields (members) on both sides of the rolling elements.
- a steering apparatus for a vehicle according to a sixth aspect of the present invention is characterized in that a large gear engaged with a small gear of an output shaft of the steering motor according to the first aspect is provided on the outer periphery. I assume.
- a steering apparatus for a vehicle according to a seventh invention of the present invention is characterized in that it has the above-mentioned large gear-power, oil-repellent tooth in the sixth invention.
- the first and second inlays are engaged by inlay fitting on the outside of the holding portion of the thrust bearing while maintaining a desired load capacity for the thrust bearing that supports the thrust of the rotary cylinder.
- the integral housing of the housing can be realized without affecting the external shape of the housing under sufficient tightening of the fixing nut of the thrust bearing, and the rotation of the rotating cylinder is motion-converted and transmitted to the steering shaft.
- the present invention has excellent effects, such as enabling stable steering operation to be performed.
- FIG. 1 is a schematic view showing an entire configuration of a vehicle steering system according to the present invention configured as an electric power steering system.
- FIG. 2 is a longitudinal sectional view showing an internal configuration of a rack housing in the vicinity of a mounting position of a steering motor.
- Fig. 3 is an enlarged cross-sectional view of the vicinity of a holding portion of a thrust bearing.
- FIG. 1 is a schematic view showing the overall configuration of a vehicle steering system according to the present invention, and this vehicle steering system is a rack-pion type that operates in response to a rotation operation of a steering wheel S as a steering member. It is configured as an electric power steering apparatus including a steering mechanism and a steering motor 3 attached to the steering mechanism and driven for steering assistance.
- the steering mechanism includes a cylindrical rack housing 10 extending in the lateral direction of the vehicle body (not shown), and a rack shaft movably supported in the axial direction inside the rack housing 10 (steering shaft ) And one. Both ends of the rack shaft 1 are projected on both sides of the rack housing 10, and are connected to the knuckle arms 12 and 12 of the left and right front wheels 11 and 11 as steering wheels via respective tie rods 13 and 13. By moving the rack shaft 1 in both directions, the knuckle arms 12, 12 are pushed and pulled via the tie rods 13, 13 to steer the left and right front wheels 11, 11.
- a pi-on housing 20 is connected in a row such that it intersects with the axis center, and the inside of the pi-on housing 20 is about the axis.
- the pinion shaft 2 is rotatably supported. As for the pinion shaft 2, only the upward projecting portion of the pinion housing 20 is illustrated, and this projection is connected to the column shaft 23 via the intermediate shaft 22 provided with universal joints 21, 21 at both ends. It is done.
- a pinion (not shown) is integrally provided at a lower portion of the pinion shaft 2 extended to the inside of the pinion housing 20. Also, on the outer surface of the rack shaft 1 supported inside the rack housing 10, rack teeth (not shown) are formed over an appropriate length including the intersection with the pi-n housing 20. Rack tooth force Pairing on the lower part of the piling shaft 2.
- the column shaft 23 is coaxially rotatably supported inside the cylindrical column housing 24, and is inclined rearwardly upward to the inside of the casing (not shown) via the column housing 24. It is done.
- a steering wheel S as a steering member is fitted and fixed to an upper end portion of a column shaft 23 protruding from an upper portion of the column housing 24.
- FIG. 2 is a longitudinal sectional view showing an internal configuration of the rack housing 10 in the vicinity of the mounting position of the steering motor 3.
- a cylindrical support housing 15 having an axial center inclined with respect to the rack housing 10 and projecting outward is arranged in a row at a middle portion of the rack housing 10.
- the rudder motor 3 is fixed to an end opening of the support housing 15 via a motor housing 30.
- the motor housing 30 has a large diameter cylindrical motor support cylinder 32 having a seat of the steering motor 3 and a seat on the support housing 15 at both ends, and the motor support cylinder 32 is seated on the support housing 15
- a small-diameter cylindrical shaft support cylinder 31 coaxially connected on the side via a tapered reduced diameter portion is provided, and inside the shaft support cylinder 31, two places separated in the axial direction are provided.
- the gear shaft 40 is supported on both sides so as to be rotatable coaxially by the bearings 41 and 41 of FIG.
- One end of the gear shaft 40 is made to project the tip force of the shaft support cylinder 31, and a small bevel gear 4 as a driving gear is formed on this projecting end.
- the other end of the gear shaft 40 projects into the motor support cylinder 32, and this projecting end is splined to the motor shaft 3a of the steering motor 3 projecting from the opposite side into the motor support cylinder 32. There is.
- the motor housing 30 integrated with the steering motor 3 in this manner has the shaft support cylinder 31 internally fitted in the support housing 15 and is coaxially fixed with the support shaft 15 and the housing 15.
- the small bevel gear 4, which also projects the tip force of the shaft support cylinder 31, is positioned to face the connecting portion of the support housing 15 and the rack housing 10 as shown, and is made via the motor shaft 3 a and the gear shaft 40. It rotates around the axis by the transmission from the steering motor 3.
- a screw groove 50 having a semicircular cross section is connected to the support housing 15 It is formed on both sides along an appropriate length in the axial direction.
- a cylindrical ball nut (rotary cylinder) 51 is rotatably supported coaxially with the rack shaft 1 inside the rack housing 10.
- a thread groove having a semicircular cross section is formed on the inner peripheral surface of the ball nut 51, and this thread groove and the thread groove 50 on the outer periphery of the rack shaft 1 are screwed together via a large number of balls 52, 52.
- the ball screw mechanism 5 is configured and screwed.
- the rack housing 10 is divided into a first housing 17 and a second housing 18 coaxially connected on one side of the position of the ball screw mechanism 5 as described above.
- the ball nut 51 is disposed at a connection portion between the radial bearing 7 internally fitted and held in the first housing 17 including the connecting portion with the support housing 15 and the first housing 17 of the second housing 18. It is supported on both sides by the thrust bearing 8 fitted and held.
- a feature of the vehicle steering system according to the present invention is the configuration of the holding portion of the thrust bearing 8 that supports one side of the ball nut 51.
- Fig. 3 is an enlarged sectional view of the vicinity of the holding portion of the thrust bearing 8.
- the thrust bearing 8 shown in this figure is a double-row angilla contact ball bearing that is back combined with the outer ring in common, and the inner ring externally fitted to one side of the ball nut 51 is the same as the ball nut 51. It is tightened by a preload nut 80 screwed to the outer periphery of the side end portion, pressed against a stop ring 53 provided circumferentially around the middle portion of the ball nut 51, and attached with a predetermined preload applied.
- the thrust bearing 8 may be a combined double angular contact ball bearing in the front, or two angular contact ball bearings combined in the front or back, and further, a conical roller bearing, or A ball bearing or roller bearing dedicated to thrust may be used.
- the holding of the thrust bearing 8 in the rack housing 10 is achieved by using a thrust ring on a holding ring (holding portion) 81 circumferentially provided at an end portion of the second housing 18 connected to the first housing 17.
- the outer ring is fitted inside, and a fixing nut 82 screwed into the screw groove on the inner surface of the opening side of the holding ring 81 is tightened on one side of the outer ring, and the fixing nut 82 and the inner step portion 83 of the inner holding ring 81 And the outer ring is held between the two.
- the outer periphery of the retaining ring 81 is used as an inlay fitting portion for connection with the first housing 17. That is, on the inner surface of the connection side end of the first housing 17 with the second housing 18, the fitting portion 19 is provided circumferentially over a predetermined length, and the first and second housings 17 and 18 are provided. As shown in the drawing, the retaining ring 81 of the second housing 18 is inserted into the fitting portion 19 of the first housing 17 and the concentricity of both the housings 17 and 18 is maintained by the action of the fitting portion. It is connected.
- a small diameter portion 84 processed to have a smaller diameter than the other portions is formed on the outer peripheral surface of the holding ring 81 which is inlay fitted to the fitting portion 19.
- the small diameter portion 84 extends between the tip end on the opening side of the holding ring 81 as shown in the figure and the inner surface of the fitting portion 19 over a length range substantially equal to the screwing area of the fixing nut 82 inside. It is provided to secure a predetermined gap C.
- the fixing nut 82 presses the thrust bearing 8 fitted in and held by the holding ring 81 against the inner step portion 83 of the holding ring 81, and is tightened so as to fix it in the axial length direction.
- a fixing reaction force from the thrust bearing 8 is applied to the fixing nut 82.
- the tightening reaction force causes the holding ring 81 to increase the diameter of the outer diameter of the holding ring 81 via the screw portion into which the fixing nut 82 is screwed as indicated by the white arrow in FIG. Although this increase in the diameter of the in-opening occurs at the small diameter portion 84 provided to correspond to the screwing area of the fixing nut 82, the range of the clearance C between the inner surface of the fitting portion 19 Absorbed within.
- the above effect is achieved by forming the small diameter portion 84 on the outer periphery of the holding ring 81 as a holding portion of the thrust bearing 8. Since the provision is made without affecting the outer shape of the rack housing 10, there is no risk of interfering with the installation in a vehicle.
- the second housing 18 is provided with a holding ring 81.
- the holding ring 81 is provided in the first housing 17, and the fitting portion 19 is provided in the second housing 18, Also in this case, the two housings 17 and 18 are connected by means of the inlay fitting, and in this case as well, a small diameter portion 84 is provided on the outer periphery of the holding ring 81 and a clearance C is secured in the inlay fitting part. It goes without saying that the effect can be obtained.
- the fixing nut 82 tightened in the assembly stage is loosened by the action of an external force applied after mounting on the vehicle, and there is a possibility that the fixed portion of the thrust bearing 8 may generate rattling over time, and the rack housing 10 is often made of aluminum or aluminum alloy for weight reduction.
- the difference in thermal expansion coefficient between the holding ring 81 and the fixing nut 82 promotes the loosening of the fixing nut 82.
- the retaining ring 85 is provided between the tip of the holding ring 81 and the fitting portion 19 to prevent such a fixing nut 82 from being loosened with time. , And abut on the end face of the fixing nut 82. This abutment is realized so as to obtain a predetermined abutment state after tightening of the fixing nut 82 at the assembly stage, and the temporal loosening of the fixing nut 82 is relieved by the interposition of the retaining ring 85. Be done.
- the screw of the inner circumference of the holding ring 81 and the screw of the fixing nut 82 in the outer circumference is It is effective to make the pitch different. For example, if the screw pitch on the side of the retaining ring 81 made of aluminum having a large coefficient of thermal expansion is made larger than the screw pitch on the side of the fixed nut 82 having a small coefficient of thermal expansion, these pitch differences become larger after thermal expansion. Can effectively prevent the occurrence of loosening. If the screw pitch is different, the tightening force necessary for assembly also increases. For example, when the screw pitch on the retaining ring 81 side is 1.5 and the screw pitch on the fixing nut 82 side is 1.4, tightening is performed. The increased amount of force does not have the risk of interfering with the smaller assembly.
- a large bevel gear 6 as a driven gear is coaxially fixed on the outside, and the large bevel gear 6 comprises a support housing 15 and a rack housing.
- the small bevel gear 4 at the end of the gear shaft 40 is engaged with the gear 10 at a portion where it is connected.
- the large bevel gear 6 is a resin gear made of a resin material and has at least a tooth portion to be coupled to the small bevel gear 4, and the coupling noise with the small bevel gear 4 is reduced and the small bevel gear 4 and The generation of metal wear powder generated at the weld zone is suppressed.
- the radial bearings 7 and the thrust bearings 8 supporting both sides of the ball nut 51 as described above are shield bearings provided with metal shields and rubber seals on both sides of the balls as rolling elements as shown.
- the metal abrasion powder generated at the joint portion is shut off to prevent the inside of both the bearings 7 and 8 and the approach of the balls 52 and 52 of the ball screw mechanism 5 into the rolling portions.
- the thrust bearing 8 that supports one side of the ball nut 51 is the above-described holding
- the structure has sufficient thrust load capacity, and stable steering assist operation can be performed.
- the present invention in a vehicle provided with a rack-pion type steering mechanism, is applied to an electric power steering apparatus that transmits the rotation of steering motor 3 to rack shaft 1 as a steering shaft.
- the present invention converts the motion of the steering motor to transmit the rotation of the steering motor to the steering shaft in the steering mechanism
- the present invention can be applied to any type of electric power steering apparatus configured to assist the steering performed by the movement of the vehicle.
- the force screw using the ball screw mechanism 5 to convert the rotation of the steering motor 3 into the movement of the rack shaft 1 as the steering shaft in the axial direction may be used.
- a screw mechanism using a bearing disclosed in JP-A-2001-187955, a so-called bearing screw may be used.
- the present invention is not limited to the electric power steering device, and the force of the steering member is mechanically divided. Also in a separate steering apparatus having a configuration in which steering is performed only by rotation of a steering motor attached to a part of the steering mechanism, a so-called steer-by-wire steering apparatus, which has a steering mechanism separated from one another. Needless to say, it can be applied for transmission to the steering motor force steering shaft, and the same effect can be obtained.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Power Steering Mechanism (AREA)
- Transmission Devices (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/581,193 US8104567B2 (en) | 2003-12-04 | 2004-11-30 | Vehicle steering apparatus |
EP04819817.0A EP1880920B1 (en) | 2003-12-04 | 2004-11-30 | Steering apparatus for vehicle |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003405778A JP4411952B2 (ja) | 2003-12-04 | 2003-12-04 | 車両用操舵装置 |
JP2003-405778 | 2003-12-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005054036A1 true WO2005054036A1 (ja) | 2005-06-16 |
Family
ID=34650233
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/017766 WO2005054036A1 (ja) | 2003-12-04 | 2004-11-30 | 車両用操舵装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US8104567B2 (ja) |
EP (1) | EP1880920B1 (ja) |
JP (1) | JP4411952B2 (ja) |
WO (1) | WO2005054036A1 (ja) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5367238B2 (ja) * | 2007-06-19 | 2013-12-11 | Thk株式会社 | ボールねじアクチュエータ及びこれを用いたステアリング装置 |
KR101261093B1 (ko) * | 2009-06-22 | 2013-05-06 | 주식회사 만도 | 랙 구동식 전동 파워 스티어링 장치 |
JP5962295B2 (ja) * | 2012-07-24 | 2016-08-03 | 株式会社ジェイテクト | 電動パワーステアリング装置 |
US9321478B2 (en) * | 2013-03-14 | 2016-04-26 | Trw Automotive U.S. Llc | Electric power steering assembly |
US10787195B2 (en) * | 2013-05-22 | 2020-09-29 | Jtekt Corporation | Electric power steering system |
US10889318B2 (en) * | 2017-11-24 | 2021-01-12 | Jtekt Corporation | Steering device |
US10906578B2 (en) * | 2017-12-29 | 2021-02-02 | Steering Solutions Ip Holding Corporation | Power actuator assembly for steering column assemblies |
FR3085341B1 (fr) * | 2018-08-29 | 2021-04-09 | Jtekt Europe Sas | Boitier d’assistance de direction de vehicule automobile comprenant un blocage de roulement a billes |
CN111954452B (zh) * | 2020-06-29 | 2022-11-29 | 西安电子科技大学 | 一种抗磨损可旋转宽带电磁屏蔽结构、设计方法及应用 |
Citations (8)
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JPH0625078U (ja) * | 1992-09-02 | 1994-04-05 | 光洋精工株式会社 | 動力舵取装置 |
WO2000026077A1 (fr) * | 1998-10-29 | 2000-05-11 | Mitsuba Corporation | Dispositif de servodirection electrique |
JP2000168581A (ja) * | 1998-12-08 | 2000-06-20 | Showa Corp | 電動パワーステアリング装置 |
JP2000280923A (ja) * | 1999-04-01 | 2000-10-10 | Showa Corp | 電動パワーステアリング装置 |
JP2000280921A (ja) * | 1999-04-01 | 2000-10-10 | Showa Corp | 電動パワーステアリング装置 |
JP2001187955A (ja) | 1999-12-28 | 2001-07-10 | Koyo Seiko Co Ltd | 運動変換装置 |
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JP2003291830A (ja) * | 2002-04-03 | 2003-10-15 | Honda Motor Co Ltd | 電動パワーステアリング装置 |
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JPS60237217A (ja) * | 1984-05-10 | 1985-11-26 | Koyo Seiko Co Ltd | スピンドルユニツト |
JP4095124B2 (ja) | 1996-06-19 | 2008-06-04 | 株式会社ジェイテクト | 電動パワーステアリング装置 |
JPH10129511A (ja) | 1996-11-01 | 1998-05-19 | Koyo Seiko Co Ltd | 電動パワーステアリング装置 |
JPH11198828A (ja) * | 1998-01-20 | 1999-07-27 | Mitsuba Corp | 電気式動力操舵装置 |
US6155376A (en) * | 1998-12-28 | 2000-12-05 | Trw Inc. | Electric power steering assembly |
JP2001095432A (ja) | 1999-09-30 | 2001-04-10 | Daiwa Seiko Inc | 釣 竿 |
KR20020062569A (ko) * | 2001-01-22 | 2002-07-26 | 고요 세이코 가부시키가이샤 | 전동 파워 스티어링 장치 |
JP4016604B2 (ja) * | 2001-03-22 | 2007-12-05 | 株式会社ジェイテクト | 電動パワーステアリング装置 |
US6702060B2 (en) * | 2001-06-27 | 2004-03-09 | Nsk Ltd. | Electric power steering apparatus |
US6547029B2 (en) * | 2001-09-10 | 2003-04-15 | Trw Inc. | Vehicle steering apparatus |
US6644432B1 (en) * | 2002-06-27 | 2003-11-11 | Trw Automotive U.S. Llc | Electric power steering assembly |
JP2004314854A (ja) * | 2003-04-17 | 2004-11-11 | Koyo Seiko Co Ltd | 車両用操舵装置 |
JP2004352050A (ja) * | 2003-05-28 | 2004-12-16 | Koyo Seiko Co Ltd | 電動パワーステアリング装置 |
-
2003
- 2003-12-04 JP JP2003405778A patent/JP4411952B2/ja not_active Expired - Fee Related
-
2004
- 2004-11-30 US US10/581,193 patent/US8104567B2/en not_active Expired - Fee Related
- 2004-11-30 EP EP04819817.0A patent/EP1880920B1/en not_active Expired - Fee Related
- 2004-11-30 WO PCT/JP2004/017766 patent/WO2005054036A1/ja active Application Filing
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0625078U (ja) * | 1992-09-02 | 1994-04-05 | 光洋精工株式会社 | 動力舵取装置 |
WO2000026077A1 (fr) * | 1998-10-29 | 2000-05-11 | Mitsuba Corporation | Dispositif de servodirection electrique |
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US20070102229A1 (en) | 2007-05-10 |
EP1880920B1 (en) | 2016-08-17 |
JP4411952B2 (ja) | 2010-02-10 |
EP1880920A4 (en) | 2009-11-25 |
JP2005162084A (ja) | 2005-06-23 |
US8104567B2 (en) | 2012-01-31 |
EP1880920A1 (en) | 2008-01-23 |
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