Variable resistor

Application Number: 00109179
Application Date: 2000.06.14
Publication Number: 1277443
Publication Date: 2000.12.20
Priority Information: 1999/6/14 JP 166240/99
International: H01C1/14;H01C10/30
Applicant(s) Name: Murata Manufacturing Co., Ltd.
Inventor(s) Name: Ageta Yukinori
Patent Agency Code: 11021
Patent Agent: wang huimin
Abstract To provide a variable resistor which can secure both the rotational angle of a slider and the strength of a substrate-side stopper section by suppressing stresses acting on a contact section, when the slider comes into collision with a stopper section. An arm section 12 of a slider 10, supported by a circular-arcuate resistor 3 provided on a substrate 1 rotatably around the center section of the resistor 3, is brought into contact with the resistor 3. The slider 10 is punched in a state, where a driver plate 11 having a flange section and a saucer- like projecting section 11b formed at its central part is coupled with the ring-like arm section 12 having a contact section 12a, and the projecting section 11b is make to protrude downward from the arm section 12 by folding 180deg. the section 11b at the coupling section 13 and attached to a terminal 20. A stopper section 22, which is erected along the side face of the substrate 1, is formed on the terminal 20, and a stopper piece 11c extended in the radial direction from the forked coupling section 13 of the slider 10 is formed integrally with the flange section 11a. The rotational angle of the slider 10 is controlled, by bringing the stopper piece 11c into contact with the stopper section 22 of the terminal 20.