Title:
WINCH DEVICE
Document Type and Number:
Japanese Patent JP2021075376
Kind Code:
A
Abstract:
To generate an electrical braking force in a motor to allow a winch device to restart quickly while stopping midway, and also to protect the motor from burning out, etc.SOLUTION: A motor control unit 51 executes the stop braking control for generating the stop braking force (forced drive) in an electric motor unit 80 when a stop signal STP for stopping the movement of the wheelchair is input. A drive member control unit 53 controls a solenoid drive member 93c to regulate the rotation of the drum by means of a ratchet when a predetermined time (Tth) or more has passed since the stop braking control was started or when the moving speed of a belt 32 exceeds a specified value (Vth3). A winch device 40 can be stopped in the middle and can be restarted quickly by generating an electric braking force in the electric motor unit 80. When a large load is applied to the electric motor unit 80, the rotation of the drum is regulated by means of a ratchet, so that the electric motor unit 80 can be protected from burning or the like.SELECTED DRAWING: Figure 8
Inventors:
ONOZAWA HIROSHI
SEKINE YOSHITAKA
IRISAWA KAZUKI
SEKINE YOSHITAKA
IRISAWA KAZUKI
Application Number:
JP2019204643A
Publication Date:
May 20, 2021
Filing Date:
November 12, 2019
Export Citation:
Assignee:
MITSUBA CORP
International Classes:
B66D5/30; A61G3/06; A61G3/08; B66D1/46; B66D1/58; B66D5/32
Domestic Patent References:
| JP2007050965A | 2007-03-01 | |||
| JP2018177451A | 2018-11-15 | |||
| JP2011051771A | 2011-03-17 | |||
| JP2011020831A | 2011-02-03 | |||
| JPS54181462U | 1979-12-22 |
Attorney, Agent or Firm:
Tsutsui International Patent Office