Title:
LIFTING DEVICE
Document Type and Number:
Japanese Patent JP3424963
Kind Code:
B2
Abstract:
PURPOSE: To prevent the weight of an elevating body or the like from being transmitted directly to the drive source side in the stop state of a device with the elevating body moved to be disposed in the lowered position or lifted position.
CONSTITUTION: A transfer bar 10 is disposed in the freely elevated state above a frame 2a. A lift lever 17 is rotatably supported on the frame 2a, and the end part of the lift lever 17 is operation-connected to the transfer bar 10. A driving lever 22 is rotatably supported on the frame 2a, and the driving lever 22 and the lift lever 17 are connected to each other through connecting mechanism 25 formed of a pair of links 28, 31 and an intermediate lever 26 rotatably supported at the frame 2a. The driving lever 22 is rotated by a servo motor 34 serving as a drive source so as to elevate the transfer bar 10 through the connecting mechanism 25 and the lift lever 17. When the transfer bar 10 is moved into a lifted position or a lowered position, the rotation center of the driving lever 22, intermediate lever 26 or lift lever 17 and both end pivotally fixed points of the adjacent links 28, 31 are disposed on a straight line.
Inventors:
Kiyoaki Yamada
Takashi Yamamoto
Takashi Yamamoto
Application Number:
JP24172793A
Publication Date:
July 07, 2003
Filing Date:
September 28, 1993
Export Citation:
Assignee:
Hihei Toyama Co., Ltd.
International Classes:
B23Q39/04; B65G25/02; B66F7/06; (IPC1-7): B23Q39/04; B65G25/02; B66F7/06
Domestic Patent References:
| JP61166425A | ||||
| JP63127859U |
Attorney, Agent or Firm:
Hironobu Onda
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