公开(公告)号：US20020020578A1

公开(公告)日：2002-02-21

申请号：US09924316

申请日：2001-08-08

Applicant: Koyo Seiko Co., Ltd.

Inventor： Takanori Kurokawa ,  Hirokazu Arai ,  Akihiko Shiina ,  Masashi Kuze ,  Mitsuharu Minami ,  Hideo Matsubara

IPC: B62D005/04

CPC classification number: B62D5/0409 ,  F16H55/06 ,  Y10S74/10 ,  Y10T74/19828 ,  Y10T74/19907

Abstract: In an electric power steering device, a driven gear of a deceleration gear mechanism for transmitting rotation of an electric actuator for generating auxiliary steering power has a gear body made of a synthetic resin material. At least the outer periphery of a metal core ring is covered by the gear body. The gear body is molded and integrated with the core ring by injecting synthetic resin material into a mold, in which the core ring is inserted. A plurality of teeth, each of which has faces which run in the direction of the axis of rotation of the driven gear, are formed on the outer periphery of the core ring so as to be arranged at intervals in a circumferential direction. The synthetic resin material that constitutes the gear body is filled in the spaces between the teeth of the core ring.

Abstract translation: 在电动助力转向装置中，用于传递用于产生辅助转向动力的电致动器的旋转的减速齿轮机构的从动齿轮具有由合成树脂材料制成的齿轮体。 至少金属芯环的外周被齿轮体覆盖。 齿轮体通过将合成树脂材料注入到其中插入芯环的模具中而与芯环模制并整合。 在芯环的外周形成有沿圆周方向间隔设置的多个齿，其各自具有沿从动齿轮的旋转轴线方向延伸的面。 构成齿轮体的合成树脂材料填充在芯环的齿之间的空间中。

公开(公告)号：US20040083610A1

公开(公告)日：2004-05-06

申请号：US10625601

申请日：2003-07-24

Applicant: Koyo Seiko Co., Ltd.

Inventor： Masashi Kuze ,  Mitsuharu Minami ,  Akihiko Shiina ,  Hideo Matsubara

IPC: B21K001/30 ,  B23P017/00

CPC classification number: B62D5/0409 ,  F16H55/06 ,  F16H55/22 ,  F16H2055/065 ,  Y10T29/49472 ,  Y10T29/49474 ,  Y10T29/49986 ,  Y10T74/19828

Abstract: The support body engaged with the interior side of the tooth body provided at the worm wheel of the electric power steering apparatus comprises: a corrugated cylinder part press-formed to have a plurality of concavities on the exterior side thereof and convexities to the interior formed by said concavities which are arranged in a peripheral direction; and a plate part an exterior edge of which is united with an end of said corrugated cylinder part, wherein the tooth body is engaged with the exterior side of the corrugated cylinder part. With the method of manufacturing the gear, synthetic resin of the tooth body can be deposited uniformly on the support body made of metal engaged with the interior of the tooth body, costs can be reduced, and the support body can be engaged with the tooth body without generating voids and weld marks.

Abstract translation: 与设置在电动助力转向装置的蜗轮处的齿体的内侧接合的支撑体包括：波纹筒部，其压入成形为具有在其外侧上的多个凹部和由内部形成的凸部 所述凹部沿周向布置; 以及板部，其外缘与所述波纹筒部的端部结合，其中所述齿体与所述波纹筒部的外侧接合。 通过齿轮的制造方法，可以将齿体的合成树脂均匀地沉积在与齿体内部配合的金属制的支撑体上，可以降低成本，并且支撑体能够与齿体接合 而不产生空隙和焊缝。