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Title:
SELECTOR SWITCH
Document Type and Number:
Japanese Patent JP3936433
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To secure the returning force of an operating part by adding the spring force a second spring that presses a pressing plate which supports a first spring to the spring force of the first spring that is pressed by a cam formed integrally with a cylindrical cam so that it is twisted to actuate a contact for pressing a notch pin.
SOLUTION: This selector switch is provided with a handle 6 capable of being twisted, a cylindrical cam to be rotated with the handle 6 for opening and closing contact, a notch pin 15 to be pressed by and brought into contact with the cam, a first spring for pressing the notch pin 15, and a second spring 18 for pressing the notch pin 15 through a pressing plate 17 and the first spring. By twisting the handle 6, the contact is forcibly opened and closed via the cam formed integrally with the handle 6. The spring force of the springs acting on the notch pin 15 placed on a base 2, that is caught by a pair of protruding strips 21 in a cylinder, acts as a component force in the rotating direction effected by the cam slope of the cam so that the rotative returning force is increased.


Inventors:
Ono, Hiroyuki
Takeuchi, Takehisa
Application Number:
JP1997000178642
Publication Date:
June 27, 2007
Filing Date:
July 03, 1997
Export Citation:
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Assignee:
FUJI ELECTRIC CO LTD
CHICHIBU FUJI:KK
International Classes:
H01H19/62; H01H27/06; H01H19/63; (IPC1-7): H01H27/06; H01H19/62
Domestic Patent References:
JP3101824U
JP1007949Y2
JP49007714B1
JP62100647U
Attorney, Agent or Firm:
谷 義一
阿部 和夫
加古 進