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1. 发明公开

EP2428430A1 Electric power steering system 有权
标题翻译：电动助力转向系统
公开(公告)号：EP2428430A1
公开(公告)日：2012-03-14
申请号：EP11180030.6
申请日：2011-09-05
申请人： JTEKT CORPORATION
发明人： Hamakita, Jun , Tomita, Takehito
IPC分类号： B62D5/04 , F16C27/04 , F16D3/68 , F16H1/16 , F16H55/24
CPC分类号： B62D5/0409 , F16C27/04 , F16C2326/24 , F16C2361/61 , F16D3/68 , F16H1/16 , F16H55/24 , F16H57/039 , F16H2057/0213 , F16H2057/0222 , F16H2057/127
摘要： A reduction gear (19) coupled to an electric motor (18) includes: a first bearing (31) that rotatably supports a first end portion (22) of a worm shaft (20) such that the worm shaft (20) is allowed to oscillate in an oscillation direction (A1) about the first end portion (22); and a first elastic member (36) that elastically urges a second bearing (32) in such a direction (B2) that an axis-to-axis distance (D1) between the worm shaft (20) and the worm wheel (21) reduces. The first end portion (22) and an output shaft (18b) of the electric motor (18) are coupled by a joint (50). A second elastic member (64) located between the joint (50) and the first end portion (22) elastically urges the worm shaft (20) toward a second end portion (23) and applies a preload on the first bearing (31). An outer ring (31 b) of the first bearing (31) is interposed in an axial direction (S1) by the third elastic member (83) and the fourth elastic member (87).
摘要翻译：与电动机（18）连接的减速齿轮（19）包括：第一轴承（31），该第一轴承可旋转地支撑蜗杆轴（20）的第一端部（22），使得蜗杆轴（20）围绕第一端部（22）在摆动方向（A1）上摆动; 以及在所述蜗杆轴（20）和所述蜗轮（21）之间的轴线间距离（D1）沿着所述方向（B2）弹性地推压第二轴承（32）的第一弹性构件（36）。电动机（18）的第一端部（22）和输出轴（18b）通过接头（50）连接。位于接头（50）和第一端部（22）之间的第二弹性构件（64）朝向第二端部（23）弹性地推动蜗杆轴（20）并且在第一轴承（31）上施加预载荷。第一轴承31的外圈31b由第三弹性部件83和第四弹性部件87沿轴向（S1）夹持。

2. 发明授权

EP2428430B1 Electric power steering system 有权
标题翻译：电力系统
公开(公告)号：EP2428430B1
公开(公告)日：2014-08-27
申请号：EP11180030.6
申请日：2011-09-05
申请人： JTEKT CORPORATION
发明人： Hamakita, Jun , Tomita, Takehito
IPC分类号： B62D5/04 , F16C27/04 , F16D3/68 , F16H1/16 , F16H55/24
CPC分类号： B62D5/0409 , F16C27/04 , F16C2326/24 , F16C2361/61 , F16D3/68 , F16H1/16 , F16H55/24 , F16H57/039 , F16H2057/0213 , F16H2057/0222 , F16H2057/127

3. 发明公开

EP2597014A2 Electric power steering system 有权
标题翻译：电动助力转向系统
公开(公告)号：EP2597014A2
公开(公告)日：2013-05-29
申请号：EP12193816.1
申请日：2012-11-22
申请人： JTEKT CORPORATION
发明人： Hamakita, Jun , Mitsumaru, Michitoshi , Nagai, Yoshitomo
IPC分类号： B62D5/04
CPC分类号： B62D5/0403 , B62D5/0409 , F16C23/08 , F16C27/04 , F16C2326/24 , F16C2361/61 , F16H55/24 , F16H2057/0213
摘要： There is provided an urging mechanism (B) that elastically urges a second end portion (23) of a worm shaft (20) that is supported so as to be pivotable about a first end portion (22). The urging mechanism (B) is configured to adjust a backlash between the worm shaft (20) and a worm wheel (21) by elastically urging the second end portion (23) in a perpendicular direction (Z1) that is perpendicular to a direction (Y1) in which an inter-axis distance (D1) between the worm shaft (20) and the worm wheel (21) increases and decreases, in a state where increases and decreases in the inter-axis distance (D1) is prevented.
摘要翻译：提供了推动机构（B），该推动机构弹性地推动被支撑为可围绕第一端部（22）枢转的蜗杆轴（20）的第二端部部分（23）。推动机构（B）构造成通过沿垂直于方向（Z1）的方向（Z1）弹性地推动第二端部部分（23）来调节蜗杆轴（20）和蜗轮（21） Y1），其中在防止轴间距离（D1）增加和减少的状态下，蜗杆轴（20）和蜗轮（21）之间的轴间距离（D1）增大和减小。

4. 发明授权

EP2423075B1 Electric power steering system 有权
公开(公告)号：EP2423075B1
公开(公告)日：2014-11-26
申请号：EP11179134.9
申请日：2011-08-29
申请人： JTEKT CORPORATION
发明人： Hamakita, Jun
IPC分类号： B62D5/04 , F16C27/04 , F16H57/021
CPC分类号： B62D5/0409 , F16C27/04 , F16C2326/24 , F16H55/24 , F16H2057/0213

5. 发明公开

EP2423075A2 Electric power steering system 有权
标题翻译：电力系统
公开(公告)号：EP2423075A2
公开(公告)日：2012-02-29
申请号：EP11179134.9
申请日：2011-08-29
申请人： JTEKT CORPORATION
发明人： Hamakita, Jun
IPC分类号： B62D5/04
CPC分类号： B62D5/0409 , F16C27/04 , F16C2326/24 , F16H55/24 , F16H2057/0213
摘要： An electric power steering system includes a worm reduction gear. An end portion (3b) of worm shaft (3), the end portion (3b) being distant from a motor (1), is urged toward a worm wheel (4). The worm shaft (3) is supported by a bearing (6) at an end portion (3a) close to the motor (1). A movement inhibitor (11) that includes an elastic element (11b) is arranged between the worm shaft (3) and the bearing (6). The movement inhibitor (11) allows the worm shaft (3) to move within a predetermined range in a radial direction of the worm shaft (3) with respect to the bearing (6) and allows the worm shaft (3) to move within a predetermined range in an axial direction of the worm shaft (3) with respect to the bearing (6).
摘要翻译：电动助力转向系统包括蜗轮减速装置。蜗杆轴（3）的远离电动机（1）的端部（3b）的端部（3b）被推向蜗轮（4）。蜗杆轴（3）由靠近电动机（1）的端部（3a）处的轴承（6）支撑。包括弹性元件（11b）的运动抑制器（11）布置在蜗杆轴（3）和轴承（6）之间。运动抑制器（11）允许蜗杆（3）相对于轴承（6）在蜗杆轴（3）的径向方向上在预定范围内移动，并且允许蜗杆轴（3）在蜗杆轴（3）相对于轴承（6）的轴向的预定范围。

6. 发明公开

EP2597014A3 Electric power steering system 有权
公开(公告)号：EP2597014A3
公开(公告)日：2013-12-25
申请号：EP12193816.1
申请日：2012-11-22
申请人： JTEKT CORPORATION
发明人： Hamakita, Jun , Mitsumaru, Michitoshi , Nagai, Yoshitomo
IPC分类号： B62D5/04 , F16C23/08 , F16C25/08 , F16H57/021
CPC分类号： B62D5/0403 , B62D5/0409 , F16C23/08 , F16C27/04 , F16C2326/24 , F16C2361/61 , F16H55/24 , F16H2057/0213
摘要： There is provided an urging mechanism (B) that elastically urges a second end portion (23) of a worm shaft (20) that is supported so as to be pivotable about a first end portion (22). The urging mechanism (B) is configured to adjust a backlash between the worm shaft (20) and a worm wheel (21) by elastically urging the second end portion (23) in a perpendicular direction (Z1) that is perpendicular to a direction (Y1) in which an inter-axis distance (D1) between the worm shaft (20) and the worm wheel (21) increases and decreases, in a state where increases and decreases in the inter-axis distance (D1) is prevented.

7. 发明公开

EP2626594A1 Worm Wheel 有权
标题翻译： Schneckenrad
公开(公告)号：EP2626594A1
公开(公告)日：2013-08-14
申请号：EP13153087.5
申请日：2013-01-29
申请人： JTEKT CORPORATION
发明人： Hamakita, Jun , Mitsumaru, Michitoshi
IPC分类号： F16H55/08
CPC分类号： F16H55/22 , F16H55/0853 , Y10T29/49469 , Y10T74/1987 , Y10T74/19953
摘要： Each tooth of a worm wheel has a first tooth flank (10a) in which a helical surface portion (10a') is arranged on one side in a rotational axis direction of the worm wheel and a concavely curved surface portion (10a") is arranged on the other side in the rotational axis direction, and a second tooth flank (10b) in which a concavely curved surface portion (10b") is arranged on the one side in the rotational axis direction and the helical surface portion (10b') is arranged on the other side in the rotational axis direction.
摘要翻译：蜗轮的每个齿具有第一齿面（10a），螺旋面部（10a'）在涡轮的旋转轴线方向上一侧配置有螺旋面部（10a'），并且配置有凹曲面部（10a“）和在旋转轴方向上的另一侧的第二齿面（10b），在旋转轴方向的一侧配置有凹曲面部（10b“），螺旋面部（10b'）为布置在旋转轴线方向上的另一侧。

8. 发明公开

EP2450262A1 Electric power steering system 有权
标题翻译：电力系统
公开(公告)号：EP2450262A1
公开(公告)日：2012-05-09
申请号：EP11187772.6
申请日：2011-11-03
申请人： JTEKT Corporation
发明人： Hamakita, Jun , Kusano, Hirotsugu
IPC分类号： B62D5/04 , F16H57/022 , F16C33/58
CPC分类号： B62D5/0409 , F16C33/585 , F16C2240/76 , F16H55/24 , F16H57/022 , F16H57/039 , F16H2057/0213
摘要： A curvature radius R1 of a raceway groove 31d of an inner ring 31a of a first bearing 31 supporting a first end portion 22 of a worm shaft 20 and a curvature radius R2 of a raceway groove 31e of an outer ring 31b of the first bearing 31 are larger than 50% of a diameter D1 of each rolling element 31 of the first bearing 31, whereby the worm shaft 20 is pivotable about the first end portion 22. Internal clearances in the first bearing 31 are eliminated because the first bearing 31 is pressed in a radial direction Q1 by a pressing member 35. When the worm shaft 20 vibrates relative to a housing 70 in an axial direction S1, paired second elastic members 63 and 67 damp and absorb the vibration.
摘要翻译：支撑蜗杆轴20的第一端部22的第一轴承31的内圈31a的轨道槽31d的曲率半径R1和第一轴承31的外圈31b的轨道槽31e的曲率半径R2 大于第一轴承31的每个滚动元件31的直径D1的50％，从而蜗杆轴20可围绕第一端部22枢转。由于第一轴承31被按压，第一轴承31中的内部间隙被消除通过按压构件35在径向方向Q1上。当蜗杆20相对于壳体70沿轴向S1振动时，成对的第二弹性构件63和67减弱并吸收振动。

9. 发明授权

EP2719926B1 Speed reducer and electric power steering system 有权
公开(公告)号：EP2719926B1
公开(公告)日：2018-06-27
申请号：EP13188040.3
申请日：2013-10-10
申请人： JTEKT Corporation
发明人： Wakugawa, Yuji , Nakata, Ryuji , Yoshida, Atsuhiro , Yamada, Wataru , Hamakita, Jun , Honkado, Hideyuki
IPC分类号： F16H57/04 , F16H57/039
CPC分类号： B62D3/04 , B62D5/0409 , F16H1/16 , F16H57/039 , F16H57/0464 , F16H57/0498 , Y10T74/19828
摘要： A speed reducer (18) for an electric power steering system includes a worm (19), a worm wheel (20), and a housing (21). Only a meshing section (B) where the worm (19) and the worm wheel (20) mesh with each other and a space (A) between the worm wheel (20) and the housing (21) are filled with grease. The grease in the space (A) is in contact with both tooth surfaces (20h) of the worm wheel (20) and an inner peripheral face (21c) of the housing (21), the inner peripheral face (21c) facing the worm wheel (20).

10. 发明授权

EP2597014B1 Electric power steering system 有权
标题翻译：电力系统
公开(公告)号：EP2597014B1
公开(公告)日：2015-07-15
申请号：EP12193816.1
申请日：2012-11-22
申请人： JTEKT CORPORATION
发明人： Hamakita, Jun , Mitsumaru, Michitoshi , Nagai, Yoshitomo
IPC分类号： B62D5/04 , F16C23/08 , F16C25/08 , F16H57/021
CPC分类号： B62D5/0403 , B62D5/0409 , F16C23/08 , F16C27/04 , F16C2326/24 , F16C2361/61 , F16H55/24 , F16H2057/0213

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