Title:
KEY SWITCH DEVICE
Document Type and Number:
Japanese Patent JP3242888
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To appropriately operate a prescribed micro switch during rotation of a rotor and to improve reliability, by providing a detent board with a pair of circular-arc-shaped arms, providing a pair of recessed parts for the detent on the outer peripheral surface of a cam for switch operation, and providing a tip of the circular-arc-shaped arm with a locking projection engaged with the recessed parts for the detent.
SOLUTION: A pair of circular-arc-shaped arms 7, 7 facing the outer peripheral surfaces of cams 5 for switch operation is provided on a detent board 6 fixed to a switch mounting plate 2, a pair of recessed parts 8, 8 for the detent is provided on the outer peripheral surfaces of the cams 5 being faced on its diameter, and locking projections 9, 9 engaged with the recessed parts 8, 8 for the detent are provided at the tips of the circular-arc-shaped arms 7, 7. When a rotor is rotated in a prescribed direction by a prescribed angle, the locking projections 9, 9 of the pair of circular-arc-shaped arms 7, 7 of the detent board 6 drop to the recessed parts 8, 8 for the detent of the cams 5 at the terminal of the rotation, and elastically engage with these. Thus, the cams 5 are adequately aligned on a central axis line of a cylinder key body.
Inventors:
Hisako Komada
Application Number:
JP34127698A
Publication Date:
December 25, 2001
Filing Date:
December 01, 1998
Export Citation:
Assignee:
Takigen Manufacturing Co., Ltd.
International Classes:
H01H27/06; (IPC1-7): H01H27/06
Domestic Patent References:
| JP62173132U |
Attorney, Agent or Firm:
Mamoru Masuda