Title:
POWER-ASSISTED CARRIAGE
Document Type and Number:
WIPO Patent Application WO/2013/054713
Kind Code:
A1
Abstract:
A power-assisted carriage provided with a vehicle frame on which an item can be placed, a drive wheel disposed on the vehicle frame, an operation handle with which a worker can input a drive force to the vehicle frame, a torque sensor for detecting the drive torque inputted to the vehicle frame from the operation handle, a controller for computing an assistance force in accordance with the drive torque, and an electric motor for applying the assistance force to the drive wheel, wherein the controller is provided with a current determination unit for determining whether a current having a magnitude that is equal to or greater than a first set value is continuously applied to the electric motor for a first set duration, and a current control unit for reducing the maximum value of the current that can be supplied to the electric motor relative to the first set value on the basis of the determination of the current determination unit.
Inventors:
SEKINE SHINICHI (JP)
MIYATANI OSAMU (JP)
MIYATANI OSAMU (JP)
Application Number:
PCT/JP2012/075683
Publication Date:
April 18, 2013
Filing Date:
October 03, 2012
Export Citation:
Assignee:
KAYABA INDUSTRY CO LTD (JP)
International Classes:
B62B3/00; B60L15/20
Foreign References:
| JP2006001426A | 2006-01-05 | |||
| JP2000214015A | 2000-08-04 | |||
| JP2006137391A | 2006-06-01 | |||
| JPH10336803A | 1998-12-18 | |||
| JPH0956015A | 1997-02-25 | |||
| JPH09202235A | 1997-08-05 | |||
| JPH115537A | 1999-01-12 | |||
| JPH11276527A | 1999-10-12 | |||
| JP2005280385A | 2005-10-13 | |||
| JPH09109894A | 1997-04-28 | |||
| JP2012166748A | 2012-09-06 |
Attorney, Agent or Firm:
GOTO, Masaki et al. (JP)
Masaki Goto (JP)
Masaki Goto (JP)
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Claims:
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