The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 12, 1998
Filed:
Apr. 26, 1996
Nippondenso Co., Ltd., Kariya, JP;
Abstract
A rotor 2 has a rotary shaft 20. A drive shaft 7 is provided around an outer periphery of rotary shaft 20 and is rotatably supported on a housing. Drive shaft 7 has the same axial center as rotary shaft 20, and has a pinion gear 7b meshing with a ring gear 8 of an engine. A speed-reduction mechanism 4 includes a sun gear 2b provided on rotary shaft 20, a planetary gear 4b meshing with sun gear 2b, and an internal gear 4a meshing with planetary gear 4b. A reduction shaft 5 receives a rotational torque transmitted from rotor 2 through speed-reduction mechanism 4. A first one-way clutch 6b is interposed between reduction shaft 5 and drive shaft 7 for connecting reduction shaft 5 to drive shaft 7 only when any rotational torque is transmitted from reduction shaft 5 to drive shaft 7. A second one-way clutch 6a is interposed between drive shaft 7 and rotary shaft 20 for connecting drive shaft 7 to rotary shaft 20 only when any rotational torque is transmitted, from drive shaft 7 to rotary shaft 20. In a start-up operation of the engine, rotation of rotor 2 is reduced through speed-reduction mechanism 4 and is transmitted through reduction shaft 5, first one-way clutch 6b and drive shaft 7 to ring gear 8 to drive the engine. After succeeding the start-up operation, rotation of ring gear 8 is transmitted through drive shaft 7 and second one-way clutch 6a to rotary shaft 20 of rotor 2 to generate electric power.