Invention Grant
- Patent Title: Ring gear, internal combustion engine-starting torque-transmission mechanism, and method of manufacturing ring gear
- Patent Title (中): 齿圈，内燃机启动扭矩传递机构，以及制造齿圈的方法
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Application No.: US12308218Application Date: 2007-06-19
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Publication No.: US08413628B2Publication Date: 2013-04-09
- Inventor: Tomoaki Suzuki , Toshiaki Asada , Makoto Ishikawa , Toshimitsu Shiba , Kazuhito Sakai
- Applicant: Tomoaki Suzuki , Toshiaki Asada , Makoto Ishikawa , Toshimitsu Shiba , Kazuhito Sakai
- Applicant Address: JP Toyota
- Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee Address: JP Toyota
- Agency: Oliff & Berridge, PLC
- Priority: JP2006-173762 20060623
- International Application: PCT/IB2007/002408 WO 20070619
- International Announcement: WO2007/148228 WO 20071227
- Main IPC: F02N11/00
- IPC: F02N11/00 ; F02N15/02
Abstract:
A ring gear is formed by joining a race side-region formed body, a gear side-region formed body and an intermediate region formed body. Accordingly, it is possible to perform processing of an inner race portion of the race side-region formed body with none of the gear side-region formed body and the intermediate region formed body present. By causing the gear side-region formed body and the intermediate region formed body to absorb changes in design depending on the type of internal combustion engine, it is possible to standardize the size and the shape of the race side-region formed body for various engine types. Because the inner race portion, as well as a disposition surface and a contact surface for the seal rings are formed on the same race side-region formed body, it is possible to finish the surfaces with precise positional relationship.
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