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Title:
MOTOR-DRIVEN ELEVATING AND SINKING DEVICE
Document Type and Number:
Japanese Patent JPH0528815
Kind Code:
A
Abstract:

PURPOSE: To prevent an electric contact for current receiving from burning-out by allowing the contact to move up and down smoothly even when apparatus side leads are pulled.

CONSTITUTION: An elevating/sinking device body 22 installed at a high altitude on the ceiling side is furnished with a takeup drum 26, and an elevating/sinking body 24 hung by a wire rope 23, which is wound on and paid off from this takeup drum 26, is equipped with an electric contact mounting table 52 insulated electrically. A plurality of current receiving contacts 73 to be contacted with and separated from respective current feeding contacts 31, which are provided on the device body 22 and connected electrically with a power supply, are supported by this table 52 with possibility of moving up and down individually. The table 52 is fitted with relaying electroconductive metal pieces 65 in the same number as the current receiving contacts 73, and they are connected together through respective relay leads 70. To these relaying metal pieces 65, apparatus side leads 68 are connected which are led from the electrical apparatus A coupled with the elevating/sinking body 24.


Inventors:
Toba, Itsuki
Hirama, Shinji
Application Number:
JP1991000184798
Publication Date:
February 05, 1993
Filing Date:
July 24, 1991
Export Citation:
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Assignee:
TOKYO ELECTRIC CO LTD
International Classes:
B66D1/60; F21V21/36; H01R9/16; H01R35/02; (IPC1-7): B66D1/60; F21V21/36; H01R9/16; H01R35/02
Attorney, Agent or Firm:
鈴江 武彦



 
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