EP 0347375 B1 19930915 - PUSH BUTTON DISPOSITION ON A CIRCUIT BOARD
Title (en)
PUSH BUTTON DISPOSITION ON A CIRCUIT BOARD
Publication
Application
Priority
CH 227188 A 19880614
Abstract (en)
[origin: EP0347375A1] In a pushbutton arrangement, the electrical contact is made directly to the conductor tracks (6) of a printed circuit board (1) by a snap-action disc (5), the snap-action disc (5) being mounted in a cutout in the spacer (2) and being protected by a covering sheet (3). In order to avoid excessive loads on the covering sheet (3) and the snap-action disc (5), the spacer (2) is constructed as a printed circuit board with a thickness of more than 1 mm to provide space for a transparent protective cap (4) which completely covers, on the one hand, the snap-action disc (5), which is anchored by means of at least two projecting lugs (11) in cutouts (10) in the printed circuit board (1) and which, on the other hand, limits the deformation of the covering sheet (3) and of the snap-action disc (5). Protective cap (4) and covering sheet (3) are illuminated through cutouts (8) on the snap-action disc (5) and through a cutout (7) in the printed circuit board (1). <IMAGE>
IPC 1-7
IPC 8 full level
H01H 13/70 (2006.01)
CPC (source: EP)
H01H 13/7006 (2013.01); H01H 2205/024 (2013.01); H01H 2209/01 (2013.01); H01H 2213/002 (2013.01); H01H 2219/014 (2013.01); H01H 2221/064 (2013.01); H01H 2221/07 (2013.01); H01H 2227/006 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0347375 A1 19891220; EP 0347375 B1 19930915; CH 676765 A5 19910228; DE 58905591 D1 19931021
DOCDB simple family (application)
EP 89810409 A 19890601; CH 227188 A 19880614; DE 58905591 T 19890601