Title:
MOTORIZED POWER ASSISTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2007/034961
Kind Code:
A1
Abstract:
A motorized power assisting device capable of delivering various desired brake
characteristics and improving brake feeling by controlling displacement according
to the absolute displacement of an input member so as to make variable the relative
displacement relations between the input member and an assist member. A target
displacement that makes variable the relative displacement relations between
an input piston and a booster piston is set according to a detection signal by a
potentiometer (86) (an input absolute displacement detecting means), and a
displacement is controlled based on a signal from a relative displacement sensor
(100) that detects the relative displacement between the both pistons so that
the relative displacement between the both pistons agrees with the target displacement.
Controlling the relative displacement between the input piston and the booster
piston in this way can deliver various brake characteristics such as brake assist
control.
Inventors:
OHTANI YUKIO (JP)
IKEDA JUNICHI (JP)
NAGAI KAZUHIRO (JP)
IKEDA JUNICHI (JP)
NAGAI KAZUHIRO (JP)
Application Number:
PCT/JP2006/319037
Publication Date:
March 29, 2007
Filing Date:
September 26, 2006
Export Citation:
Assignee:
HITACHI LTD (JP)
OHTANI YUKIO (JP)
IKEDA JUNICHI (JP)
NAGAI KAZUHIRO (JP)
OHTANI YUKIO (JP)
IKEDA JUNICHI (JP)
NAGAI KAZUHIRO (JP)
International Classes:
B60T13/74; B60T8/00; B60T8/17
Foreign References:
| JP2002321611A | 2002-11-05 | |||
| JPH06191385A | 1994-07-12 | |||
| JP2000233733A | 2000-08-29 | |||
| JP2003252189A | 2003-09-10 |
Attorney, Agent or Firm:
SHAMOTO, Ichio et al. (Section 206 New Ohtemachi Bldg., 2-1, Ohtemachi 2-chome, Chiyoda-k, Tokyo 04, JP)
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