Title:
ENERGY ACCUMULATION DEVICE OF ON-LOAD TAP CHANGER
Document Type and Number:
Japanese Patent JP2014183122
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a device which improves operating stability of switch changeover of an on-load tap changer.SOLUTION: An energy accumulation device 1 is installed on an on-load tap changer. The energy accumulation device 1 has a main lever 3 which is fixed to an output axis 2 connected to a driving part driving a changeover switch and controls rotations of the main lever 3 by an auxiliary lever 7. A main spring 8 is installed on a tip part of the main lever 3 and a tip part of the auxiliary lever 7 and an auxiliary spring 5, which stretches the main lever 3 towards the central part within the operation range, is installed on the tip part of the main lever 3. The main lever 3 is driven by elastic force accumulated in the main spring 8 and the auxiliary spring 5. Further, a locking groove 3a is formed on the shaft end of the main lever 3 and a stopper 6 is installed which is engaged by the locking groove 3a.
Inventors:
ABE TOMOKI
MACHIDORI YOSHIMASA
MACHIDORI YOSHIMASA
Application Number:
JP2013055607A
Publication Date:
September 29, 2014
Filing Date:
March 18, 2013
Export Citation:
Assignee:
MEIDENSHA ELECTRIC MFG CO LTD
International Classes:
H01F29/04
Domestic Patent References:
| JPS56108220A | 1981-08-27 | |||
| JPS49129825A | 1974-12-12 | |||
| JPH05166643A | 1993-07-02 | |||
| JPH07169625A | 1995-07-04 |
Foreign References:
| US5488212A | 1996-01-30 |
Attorney, Agent or Firm:
Hiromichi Kobayashi
Hidehisa Uzawa
Hashimoto 剛
Hidehisa Uzawa
Hashimoto 剛