Title:
POWER TRANSMISSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2013/125024
Kind Code:
A1
Abstract:
A water pump (1) is equipped with: a pulley (4), provided with an internally toothed gear (4d) and an externally toothed gear (4e) provided radially inward from the internally toothed gear (4d); a shaft gear (5), with power being transmitted between this shaft gear and the pulley (4); and a transmission mechanism (6) that mediates the transmission of power between the pulley (4) and the shaft gear (5). The transmission mechanism (6) is equipped with: gears (6a, 6b) that set the transmission gear ratio to a first value when the internally toothed gear (4d) is engaged and sets the transmission gear ratio to a second value when the externally tooth gear (4e) is engaged; a rocker arm (6e) that, on the pulley (4) side, switches the gear engaged by the gears (6a, 6b) between the internally toothed gear (4d) and the externally toothed gear (4e); and a DC motor (6f) that drives the rocker arm (6e).
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Inventors:
SUNADA HIROTAKA (JP)
Application Number:
PCT/JP2012/054532
Publication Date:
August 29, 2013
Filing Date:
February 24, 2012
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD (JP)
SUNADA HIROTAKA (JP)
SUNADA HIROTAKA (JP)
International Classes:
F16H3/34; F02B67/04
Foreign References:
| JPS62179977A | 1987-08-07 | |||
| JPH10122330A | 1998-05-15 | |||
| JPS5060662A | 1975-05-24 | |||
| JPH01170723A | 1989-07-05 | |||
| JPS56151543U | 1981-11-13 | |||
| JP2004116361A | 2004-04-15 | |||
| JP2011047394A | 2011-03-10 | |||
| JP2008078774A | 2008-04-03 | |||
| JP2001342832A | 2001-12-14 | |||
| JPS6295493A | 1987-05-01 | |||
| JP2002323106A | 2002-11-08 |
Other References:
See also references of EP 2818759A4
Attorney, Agent or Firm:
KATAYAMA, SHUHEI (JP)
Shuhei Katayama (JP)
Shuhei Katayama (JP)
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Claims: