(19)
(11) EP 1 037 224 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
29.08.2001 Bulletin 2001/35

(43) Date of publication A2:
20.09.2000 Bulletin 2000/38

(21) Application number: 00105078.0

(22) Date of filing: 10.03.2000
(51) International Patent Classification (IPC)7: H01H 13/14
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 11.03.1999 JP 6559899

(71) Applicant: ALPS ELECTRIC CO., LTD.
Ota-ku Tokyo (JP)

(72) Inventor:
  • Hayakawa, Kazuki, c/o Alps Electric Co., Ltd.
    Tokyo (JP)

(74) Representative: Klunker . Schmitt-Nilson . Hirsch 
Winzererstrasse 106
80797 München
80797 München (DE)

   


(54) Push switch


(57) A structure of a stem in a push switch is provided which can ensure a sufficient engaging strength of hook portions of the stem even if the hook portions are not equal in wall thickness and which can reduce the size of the entire stem. The push switch comprises a box-shaped housing a, a pair of fixed terminals fixed within the housing 1, a stem 5 held slidably by inner side faces of the housing 1, a movable contact 3 disposed above the fixed terminals 2 so as to be operable in interlock with movement of the stem 5, and a rubber spring 4 which causes the movable contact 3 to move into contact with and away from the fixed terminals 2 and which causes the stem to return. The stem 5 is formed with hook portions having retaining portions respectively for engagement with retaining grooves formed in the inner side faces of the housing, the hook portions 5d being respectively formed with relief portions on sides thereof opposed to the rubber spring 4 to receive therein bent portions of the rubber spring.






Search report