Surface mount snap action switch device

Inventors: Masaya Murota (Aichi, JP); Takeshi Fujimoto (Aichi, JP)

Assignee: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO

H01H19/32 H01H19/46 H01H2231/026

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Quick Facts

Patent No.: US 12671043
App. No.: 18/322,594
Granted: Jun 30, 2026
Kind: B2

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Abstract

A switch device includes a movable terminal including a snap action mechanism that bends a spring when a user moves an operating portion, a first fixed terminal that contacts the movable terminal when the spring is not bent, and a second fixed terminal that contacts the movable terminal when the operating portion is moved by a specified amount to bend the spring. The second fixed terminal includes a portion machined into a fixed contact that contacts the movable terminal.

Claims (24)

1 . A switch device, comprising:

a movable terminal including a snap action mechanism that bends a spring when a user moves an operating portion;

a first fixed terminal that contacts the movable terminal when the spring is not bent; and

a second fixed terminal that contacts the movable terminal when the operating portion is moved by a specified amount to bend the spring, wherein the second fixed terminal includes a portion machined into a fixed contact that contacts the movable terminal,

wherein

the fixed contact projects in a bulging shape so as to be curved toward the movable terminal from a base portion of the second fixed terminal body,

the second fixed terminal is a unitary one-piece member, and

the second fixed terminal includes two support portions positioned at two opposite sides of the fixed contact.

2 . The switch device according to claim 1 , wherein

the second fixed terminal includes a second fixed terminal body including the fixed contact and a second fixed terminal connection pin at an end of the second fixed terminal body.

3 . The switch device according to claim 1 , wherein

the movable terminal includes a button-shaped movable contact that contacts the first fixed terminal and the second fixed terminal,

the movable contact includes a first surface that contacts the first fixed terminal and a second surface that is opposite to the first surface and contacts the second fixed terminal, and

at least one of the first surface and the second surface includes intersecting grooves.

4 . The switch device according to claim 3 , wherein at least one of the first surface and the second surface is curved.

5 . The switch device according to claim 1 , wherein

the first fixed terminal includes a first fixed terminal connection pin mounted on and electrically connected to a board,

the second fixed terminal includes a second fixed terminal connection pin mounted on the board,

the movable terminal includes a movable terminal connection pin mounted on the board, and

the movable terminal connection pin, the first fixed terminal connection pin, and the second fixed terminal connection pin project in the same direction parallel to a mounting surface of the board.

6 . The switch device according to claim 1 , wherein a slit is formed between the fixed contact and each of the two support portions.

7 . The switch device according to claim 1 , wherein

the fixed contact has a first end and a second end opposite to the first end, and

the second fixed terminal includes a first coupling portion that couples the first end of the fixed contact to the two support portions, and a second coupling portion that couples the second end of the fixed contact to the two support portions.