JP2006224945A5 - - Google Patents
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- Publication number
- JP2006224945A5 JP2006224945A5 JP2005227402A JP2005227402A JP2006224945A5 JP 2006224945 A5 JP2006224945 A5 JP 2006224945A5 JP 2005227402 A JP2005227402 A JP 2005227402A JP 2005227402 A JP2005227402 A JP 2005227402A JP 2006224945 A5 JP2006224945 A5 JP 2006224945A5
- Authority
- JP
- Japan
- Prior art keywords
- rolling
- screw groove
- electric motor
- deflector
- nut
- 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.)
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- 238000005096 rolling process Methods 0.000 claims 16
- 230000005540 biological transmission Effects 0.000 claims 4
Claims (5)
操舵機構に連結されたラック軸と
前記電動モータからの動力を前記ラック軸に伝達する動力伝達機構と、を有し、
前記動力伝達機構は、前記ラック軸に対して連結され又は一体化され且つ雄ねじ溝を備えたねじ軸と、前記ねじ軸の周囲に配置され且つ雌ねじ溝を備えたナットと、前記雄ねじ溝と前記雌ねじ溝との間に形成された転走路内を転動可能な複数の転動体と、を有し、
前記ナットは、軸線方向に延在する前記転動体の循環路を設けた本体と、前記本体の両端に設けられ前記転走路を転動してきた転動体を、前記転走路の接線方向かつリード角方向へすくい上げ前記循環路へ戻すデフレクタとからなり、
前記デフレクタは、前記ナットを支持する軸受を固定する締結手段により、前記ナットに取り付けられることを特徴とする電動式パワーステアリング装置。 An electric motor;
A rack shaft coupled to a steering mechanism, and a power transmission mechanism for transmitting power from the electric motor to the rack shaft,
The power transmission mechanism is connected to or integrated with the rack shaft and includes a male screw groove, a nut disposed around the screw shaft and provided with a female screw groove, the male screw groove, and the screw shaft. A plurality of rolling elements capable of rolling in a rolling path formed between the female screw groove and
The nut includes a main body provided with a circulation path for the rolling elements extending in an axial direction, a rolling element provided at both ends of the main body and rolling on the rolling paths, in a tangential direction and a lead angle of the rolling path. Consisting of a deflector that scoops up in the direction and returns to the circuit,
The electric power steering apparatus, wherein the deflector is attached to the nut by fastening means for fixing a bearing that supports the nut.
操舵機構に連結されたラック軸と
前記電動モータからの動力を前記ラック軸に伝達する動力伝達機構と、を有し、
前記動力伝達機構は、前記ラック軸に対して連結され又は一体化され且つ雄ねじ溝を備えたねじ軸と、前記ねじ軸の周囲に配置され且つ雌ねじ溝を備えたナットと、前記雄ねじ溝と前記雌ねじ溝との間に形成された転走路内を転動可能な複数の転動体と、を有し、
前記ナットは、軸線方向に延在する前記転動体の循環路を設けた本体と、前記本体の両端に設けられ前記転走路を転動してきた転動体を、前記転走路の接線方向かつリード角方向へすくい上げ前記循環路へ戻すデフレクタとからなり、
前記本体の軸線方向端面には、前記電動モータの動力を伝達するために前記端面から少なくとも軸線方向に延在する突起もしくは軸線方向にくぼんだ凹部が形成されていることを特徴とする電動式パワーステアリング装置。 An electric motor;
A rack shaft coupled to a steering mechanism, and a power transmission mechanism for transmitting power from the electric motor to the rack shaft,
The power transmission mechanism is connected to or integrated with the rack shaft and includes a male screw groove, a nut disposed around the screw shaft and provided with a female screw groove, the male screw groove, and the screw shaft. A plurality of rolling elements capable of rolling in a rolling path formed between the female screw groove and
The nut includes a main body provided with a circulation path for the rolling elements extending in an axial direction, a rolling element provided at both ends of the main body and rolling on the rolling paths, in a tangential direction and a lead angle of the rolling path. Consisting of a deflector that scoops up in the direction and returns to the circuit,
An electric power characterized in that a projection extending at least in the axial direction from the end surface or a recess recessed in the axial direction is formed on an end surface in the axial direction of the main body in order to transmit power of the electric motor. Steering device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005227402A JP4807655B2 (en) | 2005-01-18 | 2005-08-05 | Electric power steering device |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005009877 | 2005-01-18 | ||
| JP2005009877 | 2005-01-18 | ||
| JP2005009878 | 2005-01-18 | ||
| JP2005009878 | 2005-01-18 | ||
| JP2005227402A JP4807655B2 (en) | 2005-01-18 | 2005-08-05 | Electric power steering device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2006224945A JP2006224945A (en) | 2006-08-31 |
| JP2006224945A5 true JP2006224945A5 (en) | 2008-09-18 |
| JP4807655B2 JP4807655B2 (en) | 2011-11-02 |
Family
ID=36986659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2005227402A Expired - Fee Related JP4807655B2 (en) | 2005-01-18 | 2005-08-05 | Electric power steering device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4807655B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7053336B2 (en) | 2018-03-28 | 2022-04-12 | 日立Astemo株式会社 | Power steering device |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010003105A1 (en) * | 2010-03-22 | 2011-09-22 | Zf Lenksysteme Gmbh | Power steering |
| JP5533108B2 (en) * | 2010-03-24 | 2014-06-25 | 株式会社ジェイテクト | Ball screw device |
| KR101612964B1 (en) * | 2010-04-14 | 2016-04-26 | 현대모비스 주식회사 | Follower assembly of motor driven power steering |
| US10787195B2 (en) | 2013-05-22 | 2020-09-29 | Jtekt Corporation | Electric power steering system |
| JP6182977B2 (en) * | 2013-05-22 | 2017-08-23 | 株式会社ジェイテクト | Electric power steering device |
| JP6379605B2 (en) * | 2014-04-07 | 2018-08-29 | 株式会社ジェイテクト | Ball screw device, power conversion mechanism, electric power steering device, and method of manufacturing ball screw device |
| KR102200843B1 (en) * | 2014-10-31 | 2021-01-12 | 현대모비스 주식회사 | Motor driven power steering apparatus |
| CN107107949A (en) | 2014-12-03 | 2017-08-29 | Trw汽车美国有限责任公司 | Rack ball nut assembly and its associated components for bogie of car |
| US10730545B2 (en) | 2015-02-03 | 2020-08-04 | Jtekt Corporation | Steering apparatus |
| JP6515690B2 (en) * | 2015-06-09 | 2019-05-22 | 日本精工株式会社 | Electric power steering device |
| KR102658115B1 (en) * | 2019-05-22 | 2024-04-18 | 에이치엘만도 주식회사 | Rack assist type electric power steering apparatus |
| JP2021076177A (en) * | 2019-11-07 | 2021-05-20 | 日本精工株式会社 | Power transmission device |
| DE102021200559A1 (en) * | 2021-01-22 | 2022-07-28 | Thyssenkrupp Ag | Electromechanical power steering for a motor vehicle |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06504B2 (en) * | 1985-12-09 | 1994-01-05 | 株式会社ユニシアジェックス | Electric power steering device |
| JP2000255437A (en) * | 1999-03-11 | 2000-09-19 | Ntn Corp | Motor-driven power steering device |
| JP2000326854A (en) * | 1999-05-18 | 2000-11-28 | Showa Corp | Electric power steering device |
| JP3950696B2 (en) * | 2002-01-29 | 2007-08-01 | 株式会社ジェイテクト | Electric power steering device |
| JP2004017687A (en) * | 2002-06-12 | 2004-01-22 | Mitsuba Corp | Electromotive power steering device |
| AU2003257639A1 (en) * | 2002-08-22 | 2004-03-11 | Nsk Ltd. | Electric power steering device |
| JP2004196036A (en) * | 2002-12-16 | 2004-07-15 | Nsk Ltd | Electric power steering device |
| JP2004301169A (en) * | 2003-03-28 | 2004-10-28 | Nsk Ltd | Ball screw device |
-
2005
- 2005-08-05 JP JP2005227402A patent/JP4807655B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7053336B2 (en) | 2018-03-28 | 2022-04-12 | 日立Astemo株式会社 | Power steering device |
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