WO2011058701A1 - ウォームホイール - Google Patents
ウォームホイール Download PDFInfo
- Publication number
- WO2011058701A1 WO2011058701A1 PCT/JP2010/006210 JP2010006210W WO2011058701A1 WO 2011058701 A1 WO2011058701 A1 WO 2011058701A1 JP 2010006210 W JP2010006210 W JP 2010006210W WO 2011058701 A1 WO2011058701 A1 WO 2011058701A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- worm wheel
- resin
- cylindrical
- worm
- gear
- Prior art date
Links
- 229920005989 resin Polymers 0.000 claims abstract description 37
- 239000011347 resin Substances 0.000 claims abstract description 37
- 239000002184 metal Substances 0.000 claims abstract description 20
- 230000002093 peripheral effect Effects 0.000 claims abstract description 5
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000465 moulding Methods 0.000 abstract description 11
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/06—Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties
-
- 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
- B62D5/0409—Electric motor acting on the steering column
-
- 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
- F16H55/06—Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties
- F16H2055/065—Moulded gears, e.g. inserts therefor
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/19—Gearing
- Y10T74/1987—Rotary bodies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/19—Gearing
- Y10T74/1987—Rotary bodies
- Y10T74/19893—Sectional
- Y10T74/19921—Separate rim
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/19—Gearing
- Y10T74/1987—Rotary bodies
- Y10T74/19893—Sectional
- Y10T74/19935—Sheet metal
Definitions
- the present invention relates to a worm wheel, and more particularly to a worm wheel of an electric power steering apparatus mounted on an automobile (hereinafter referred to as a "vehicle").
- the electric power steering device (hereinafter referred to as "EPS" (Electric Power Steering)) of the vehicle is a device for assisting the steering torque of the occupant, the input shaft is rotated by the steering torque of the steering wheel, and the rotational torque is applied to the output shaft. Is transmitted by the torque detection device, and the steering torque of the output shaft is assisted if necessary.
- a worm wheel is attached to the output shaft, and the worm wheel meshes with a worm connected with a motor to form a worm gear.
- the EPS drives the motor in accordance with the detected steering torque, and compensates for the steering torque by transmitting the rotational torque to the output shaft via the worm and the worm wheel.
- the worm wheel is known to be composed of a metal cored bar portion attached to an output shaft, and a resin gear forming portion provided on the outer periphery of the cored bar portion and engaged with a worm.
- the metal core portion securely connects the worm wheel to the output shaft, and the resin gear forming portion reduces the rattling noise and sliding noise when the gears mesh (see Patent Document 1).
- the above-described worm wheel has a cylindrical cored bar as an insert, and a resin is injection molded so as to be placed on the outer periphery of the cylindrical cored bar. Mold shrinkage occurs when the fluidized resin hardens. This molding shrinkage occurs in the direction in which the outer periphery of the cylindrical cored bar portion is tightened, and the shrinkage is blocked by the cored bar portion, so that residual stress is generated in the resin gear forming portion after molding. There has been a problem that the residual stress reduces the allowable stress of the resin gear forming portion.
- the present invention has been made in view of the above background, and it is an object of the present invention to provide a worm wheel which can reduce the residual stress of a resin gear forming portion and which can be miniaturized.
- the present invention provides a worm wheel (3) having a metal cored bar portion (30) provided with a pivot portion and a resin geared portion (20) formed on the outer periphery of the cored bar portion (30).
- the metal core portion (30) includes a boss portion (31) defining the shaft support portion, and an intermediate portion (radially outwardly extending from the outer peripheral surface of the boss portion (31) 32) and a cylindrical cylindrical portion (33) which is connected radially outside the middle portion (32) and which is provided concentrically with the boss portion (31) and in which the gear forming portion is molded .
- the hole (34, 36) penetrated to radial direction is formed in the cylindrical part (33).
- the radially penetrating holes may be, for example, a closed (endless) hole wall, or a notch or a slit in which the hole wall is continuous with the end edge of the cylindrical portion.
- the radially penetrating through hole is formed in the cylindrical portion holding the resin, and the molding shrinkage of the resin is not blocked at the position, so the residual stress is reduced and the strength reduction of the worm wheel is suppressed. be able to.
- the gear forming portion can be formed by inserting the cylindrical portion into a resin.
- the cylindrical portion is formed by being wrapped in a resin, and since the resin inserts the cylindrical portion of the cored bar, the adhesion strength between the cored bar and the gear forming portion can be improved. .
- the holes (34, 36) may be formed at the same positions in the circumferential direction (positions corresponding to each other in the circumferential direction) with the teeth (21) formed on the outer periphery of the gear forming portion (20). According to the above configuration, it is possible to suppress a decrease in tooth strength by matching the position of the tooth receiving the high load with the position of the hole.
- the gear forming portion (20) may be configured such that resin is formed in a plurality of layers (22, 23). According to the above configuration, by overmolding the resin on the worm wheel which has been once molded, it is possible to relieve the imbalance of the residual stress generated in the resin molding and to improve the tooth profile accuracy.
- the output shaft (2) of the motorized power steering apparatus of the vehicle is inserted into the boss portion (31), and the metal core portion (30) is fixed to the output shaft (2).
- the worm gear including the worm wheel and the worm can be miniaturized, and the space efficiency of the electric power steering apparatus can be improved.
- the present invention it is possible to reduce the residual stress of the resin gear forming portion and to improve the adhesion strength between the metal core portion and the gear forming portion, and to provide a worm wheel which can be miniaturized. Can.
- FIG. 1 is an overall configuration diagram of an electric power steering apparatus to which the present invention is applied.
- FIG. 2 is a cross-sectional view of the gearbox shown in FIG. 1 taken along line II-II. It is a perspective view showing the appearance of the EPS principal part to which one embodiment of the present invention was applied.
- BRIEF DESCRIPTION OF THE DRAWINGS It is a whole perspective view of the worm wheel concerning 1st Embodiment of this invention, and the partial cross section is written together. It is a whole perspective view of the metal core part concerning 1st Embodiment of this invention. It is principal part sectional drawing of the worm wheel which shows the modification concerning 1st Embodiment of this invention. It is a whole perspective view of the metal core part concerning 2nd Embodiment of this invention.
- FIG. 1 is an entire configuration diagram of an electric power steering apparatus to which the present invention is applied.
- the electric power steering apparatus is provided with a motor 5 for generating an auxiliary steering force for reducing the manual steering force of the steering wheel (manipulator) 101.
- a pinion 10 rotatably coupled to the steering wheel 101 via the steering shaft 2 and a rack 11 meshing with the pinion 10 are formed.
- a rack and pinion mechanism 106 is provided which has a rack shaft 12 provided so as to be capable of reciprocating in the vehicle width direction.
- a joint 118 protected by the cover 13 is disposed at both ends of the rack shaft 12, and both ends of the rack shaft 12 are connected to knuckle arms 109 of front wheels 108 as steering wheels via tie rods 14 There is.
- the left and right front wheels 108 are steered according to the rotation operation of the steering wheel 101, and the driving force of the motor 5 is transmitted via the worm gear mechanism 15 housed together with the pinion 10 in the gearbox 110.
- the steering shaft 2 is input.
- the motor 5 is controlled by a steering control unit (EPS-ECU) 113.
- the steering control device 113 includes output signals such as a steering angle sensor 114 detecting a steering angle of the steering wheel 101, a steering torque sensor 115 detecting a manual steering torque acting on the pinion 10, and a vehicle speed sensor 116 detecting a vehicle speed. Is input, and based on these signals, the motor 5 is controlled to generate a required assist steering force.
- FIG. 2 is a cross-sectional view taken along line II-II of the gearbox 110 shown in FIG.
- a worm gear mechanism 15 for decelerating the driving force of the electric motor 5 and transmitting it to the steering shaft 2 in the housing 119, and a rack for converting the rotational movement of the steering shaft 2 into linear movement of the rack shaft 12.
- An and pinion mechanism 106 and a steering torque sensor 115 for detecting a steering torque acting on the steering shaft 2 are accommodated.
- the worm gear mechanism 15 includes a worm 4 coaxially connected to the output shaft of the motor 5 and a worm wheel 3 coaxially fixed in a manner of being externally mounted on the steering shaft 2, and drives the motor 5.
- the force is input to the worm 4 as a drive gear to rotate the worm wheel 3 as a driven gear.
- the worm 4 has one row of teeth 134 around the core portion 133 and is formed of a metal material (for example, carbon steel or the like).
- a metal material for example, carbon steel or the like.
- the worm wheel 3 includes a metal cored bar portion 30 made of metal and a gear forming portion 20 made of resin formed on the outer periphery of the cored bar portion 30.
- a steel material can be applied to the cored bar portion 30.
- a polyamide resin can be applied to the gear forming portion 20, and the gear forming portion 20 can be molded by injection molding.
- the cored bar portion 30 is joined with the cylindrical boss portion 31, the intermediate portion 32 extending radially outward from the outer peripheral surface of the boss portion 31, and the radial outer side of the intermediate portion 32.
- a cylindrical cylindrical portion 33 having the same mechanical axis (Z axis) as the boss portion 31.
- a plurality of radial through holes 34 and convex selvages 35 extending in the machine axis (Z-axis) direction are alternately formed on the outer periphery of the cylindrical portion 33 at regular intervals.
- the output shaft 2 of the motorized power steering apparatus of the vehicle is inserted into the central axial hole 37 of the boss 31 formed in the cylindrical body, and the cored bar 30 is fixed to the output shaft 2 (see also FIG. 3). See also).
- the axial hole 37 is provided as an axial support part in this embodiment, it can also be considered as a form provided with an axis
- the intermediate portion 32 connects the boss portion 31 and the cylindrical portion 33, and according to the strength required of the worm wheel 3, the number of intermediate portions 32 as appropriate, the thickness in the machine axis (Z-axis) direction, the circumferential direction
- the width or the like of the light source can be set, for example, a disk shape.
- the cylindrical portion 33 is wider in the machine axis (Z-axis) direction than the intermediate portion 32.
- the resin is insert-molded so as to wrap the entire cylindrical portion 33 and the outer peripheral side of the intermediate portion 32. By this, it is possible to prevent the resin from moving in the radial direction, and to improve the adhesion strength between the metal core portion 30 and the gear forming portion 20.
- the through holes 34 are formed at the same positions in the circumferential direction (positions corresponding to the circumferential direction) as the teeth 21 formed in the gear forming portion 20, as shown in the cross-sectional view on the right side of FIG.
- the gear forming portion 20 tends to shrink in the radial direction of the worm wheel 3. Since the through hole 34 can release this molding shrinkage, the residual stress of the gear forming portion 20 corresponding to the circumferential position where the through hole 34 is drilled is reduced.
- the through holes 34 at the same position in the circumferential direction as the teeth 21 requiring high strength, it is possible to suppress the strength reduction of the teeth 21.
- the width in the Z direction of the cylindrical portion 33 inserted into the above-described resin can be made narrower than in the prior art, and the weight reduction of the worm wheel is achieved along with the reduction of residual stress. Contributes to miniaturization. Further, the reduction of the residual stress contributes to the improvement of the accuracy of the tooth shape after the resin molding.
- the selection 35 is a convex piece extending in the machine axis (Z-axis) direction formed in a convex shape from the outer periphery of the cylindrical portion 33, and the gear forming portion 20 made of resin is cylindrical portion 33 (core metal portion 30). And the contact area can be increased to improve the adhesion strength between the metal core portion 30 and the gear forming portion 20.
- a second resin layer 23 is formed by further over-molding a resin on the first resin layer 22 of the gear forming portion 20 once resin-molded. According to such a configuration, it is possible to relieve the imbalance of the residual stress generated in the resin molding and to improve the tooth profile accuracy.
- the thickness of the second resin layer 23 is appropriately set so as not to generate new residual stress.
- a notch which penetrates in the radial direction at the same position as the position where the through hole 34 is bored in the first embodiment described above and is continuous with the lower end edge of the circular head 33 36 are formed. Since the notches 36 can release the molding shrinkage of the resin in the radial direction of the worm wheel 3 similarly to the through holes 34, the residual of the gear forming portion 20 corresponding to the circumferential position where the notches 36 are formed. Stress is reduced. Further, similarly to the through hole 34, the notch 36 can be formed at the same position in the circumferential direction as the tooth 21 that requires high strength, so that the strength reduction of the tooth 21 can be suppressed.
Abstract
Description
EPSに適用された本発明の第1実施形態について、適宜図面を参照しながら詳細に説明する。
次に、図7を参照して本発明にかかるウォームホイールの第2実施形態について説明する。前記した第1実施形態(図1~3等参照)と同一構成の部分は、同じ参照番号を付して重複する説明は省略し、第1実施形態と異なる部分を中心に説明する。
2 出力軸
3 ウォームホイール
4 ウォーム
5 電動機
10 ピニオン
11 ラック
12 ラック軸
13 カバー
14 タイロッド
15 ウォームギア
20 ギア形成部
21 歯
22 第1樹脂層
23 第2樹脂層
30,40 芯金部
31 ボス部
32 中間部
33 円筒部
34 貫通穴
36 切り欠き
Claims (5)
- 軸支部を備えた金属製の芯金部と、該芯金部の外周に形成された樹脂製のギア形成部とを有するウォームホイールであって、
前記芯金部は、前記軸支部を画定するボス部と、該ボス部の外周面から半径方向外側へ延設された中間部と、該中間部の半径方向外側で結合され、前記ボス部と同心に設けられ前記ギア形成部がモールド成形される筒状の円筒部とを備え、
前記円筒部には径方向に貫通する孔が形成されることを特徴とするウォームホイール。 - 前記ギア形成部は、前記円筒部が樹脂にインサートされることにより形成されることを特徴とする請求項1に記載のウォームホイール。
- 前記孔は、前記ギア形成部の外周に形成される歯と周方向同位置に形成されることを特徴とする請求項1または請求項2に記載のウォームホイール。
- 前記ギア形成部は、樹脂が複数層に形成されていることを特徴とする請求項1ないし請求項3のいずれか一項に記載のウォームホイール。
- 前記ボス部には車両の電動式パワーステアリング装置の出力軸が挿入されて、前記芯金部が該出力軸に固定されることを特徴とする請求項1ないし請求項4のいずれか一項に記載のウォームホイール。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011540397A JP5502891B2 (ja) | 2009-11-11 | 2010-10-20 | ウォームホイール |
EP10829669.0A EP2500601B1 (en) | 2009-11-11 | 2010-10-20 | Worm wheel |
CN201080050271.8A CN102597571B (zh) | 2009-11-11 | 2010-10-20 | 蜗轮 |
US13/505,350 US8646352B2 (en) | 2009-11-11 | 2010-10-20 | Worm wheel |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009257973 | 2009-11-11 | ||
JP2009-257973 | 2009-11-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011058701A1 true WO2011058701A1 (ja) | 2011-05-19 |
Family
ID=43991375
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2010/006210 WO2011058701A1 (ja) | 2009-11-11 | 2010-10-20 | ウォームホイール |
Country Status (5)
Country | Link |
---|---|
US (1) | US8646352B2 (ja) |
EP (1) | EP2500601B1 (ja) |
JP (1) | JP5502891B2 (ja) |
CN (1) | CN102597571B (ja) |
WO (1) | WO2011058701A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013127267A (ja) * | 2011-12-16 | 2013-06-27 | Honda Motor Co Ltd | ギヤ、同ギヤを備えたウォームギヤ機構及び同ウォームギヤ機構を備えた電動パワーステアリング装置 |
CN105945231A (zh) * | 2016-06-02 | 2016-09-21 | 共享装备股份有限公司 | 蜗壳类铸件砂芯用防漂芯抗折弯芯骨 |
JP7483505B2 (ja) | 2019-06-27 | 2024-05-15 | キヤノン株式会社 | 複合歯車、カートリッジ、画像形成装置、成形型、および複合歯車の製造方法 |
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Publication number | Priority date | Publication date | Assignee | Title |
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DE102009046517A1 (de) * | 2009-11-09 | 2011-05-12 | Robert Bosch Gmbh | Getriebeantriebseinheit |
DE102010018079A1 (de) * | 2010-04-22 | 2011-10-27 | Ims Gear Gmbh | Welle mit einem stirnseitig angegossenen Zahnrad und Verfahren zum Herstellen einer solchen Welle |
DE102014106259A1 (de) * | 2014-05-06 | 2015-11-12 | Thyssenkrupp Presta Ag | Lenkwelle für eine Kraftfahrzeuglenkung |
JP2016023698A (ja) * | 2014-07-18 | 2016-02-08 | キヤノン株式会社 | 複合歯車およびその製造方法 |
US20160091052A1 (en) * | 2014-09-25 | 2016-03-31 | Moatech Co., Ltd. | Actuator and electronic equipment having the same |
US11268605B2 (en) * | 2019-06-27 | 2022-03-08 | Canon Kabushiki Kaisha | Composite gear, cartridge, image forming apparatus, mold, and manufacturing method for composite gear |
US11466766B2 (en) * | 2019-10-08 | 2022-10-11 | Ford Global Technologies, Llc | Gear device and method for operation of a gear device |
US20220228656A1 (en) * | 2021-01-15 | 2022-07-21 | Jtekt Corporation | Toothed pulley |
DE102021213541B3 (de) | 2021-11-30 | 2022-10-27 | Zf Friedrichshafen Ag | Zahnrad |
DE102022203534B3 (de) | 2022-04-07 | 2023-08-31 | Zf Friedrichshafen Ag | Zahnrad mit einem dreiteiligen Aufbau |
DE102022207514B3 (de) | 2022-07-22 | 2023-07-06 | Zf Friedrichshafen Ag | Zahnrad mit einem äußeren Zahnkranz |
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JPS55123043A (en) * | 1979-03-15 | 1980-09-22 | Daihatsu Motor Co Ltd | Rim construction of resinous gear for engine |
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CN101180360B (zh) * | 2005-05-25 | 2010-12-15 | 旭有机材工业株式会社 | 电动动力转向装置用树脂齿轮及具有其的电动动力转向装置 |
JP4793034B2 (ja) * | 2006-03-08 | 2011-10-12 | 日本精工株式会社 | ウォーム減速機および電動パワーステアリング装置 |
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2010
- 2010-10-20 US US13/505,350 patent/US8646352B2/en active Active
- 2010-10-20 CN CN201080050271.8A patent/CN102597571B/zh not_active Expired - Fee Related
- 2010-10-20 JP JP2011540397A patent/JP5502891B2/ja not_active Expired - Fee Related
- 2010-10-20 WO PCT/JP2010/006210 patent/WO2011058701A1/ja active Application Filing
- 2010-10-20 EP EP10829669.0A patent/EP2500601B1/en not_active Not-in-force
Patent Citations (4)
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JPS55123043A (en) * | 1979-03-15 | 1980-09-22 | Daihatsu Motor Co Ltd | Rim construction of resinous gear for engine |
JPH0469443A (ja) * | 1990-07-09 | 1992-03-04 | Unitta Co Ltd | 歯付きプーリ |
JPH11301501A (ja) | 1998-04-17 | 1999-11-02 | Nippon Seiko Kk | 電動式パワーステアリング装置のウォームホィール |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013127267A (ja) * | 2011-12-16 | 2013-06-27 | Honda Motor Co Ltd | ギヤ、同ギヤを備えたウォームギヤ機構及び同ウォームギヤ機構を備えた電動パワーステアリング装置 |
CN105945231A (zh) * | 2016-06-02 | 2016-09-21 | 共享装备股份有限公司 | 蜗壳类铸件砂芯用防漂芯抗折弯芯骨 |
JP7483505B2 (ja) | 2019-06-27 | 2024-05-15 | キヤノン株式会社 | 複合歯車、カートリッジ、画像形成装置、成形型、および複合歯車の製造方法 |
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EP2500601A1 (en) | 2012-09-19 |
US20120216645A1 (en) | 2012-08-30 |
EP2500601B1 (en) | 2014-02-26 |
CN102597571B (zh) | 2015-09-02 |
EP2500601A4 (en) | 2013-05-15 |
JPWO2011058701A1 (ja) | 2013-03-28 |
US8646352B2 (en) | 2014-02-11 |
CN102597571A (zh) | 2012-07-18 |
JP5502891B2 (ja) | 2014-05-28 |
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