Nodally operated push-button switch

• US 3,899,648 A
• Filed: 03/13/1974
• Issued: 08/12/1975
• Est. Priority Date: 03/16/1973
• Status: Expired due to Term

• Current Assignee: Taneo Murata
• Original Assignee: Taneo Murata
• Inventors: Murata, Taneo
• Primary Examiner(s): Smith, Jr., David
• Application Number:
  US05/450,865
• Time in Patent Office: 517 Days
• Field of Search: 200/67DB,159A,159B,5R,5A,67DA 174/1P
• US Class Current: 200/5.00R
• CPC Class Codes: H01H 13/7006 comprising a separate movable contact element for each switch site, all other elements being integrated in layers
• CPC Class Codes: H01H 13/703 characterised by spacers between contact carrying layers
• CPC Class Codes: H01H 2205/024 Means to facilitate positioning
• CPC Class Codes: H01H 2211/006 Individual areas
• CPC Class Codes: H01H 2223/034 Bezel
• CPC Class Codes: H01H 2223/054 Mounting of key housings on same printed circuit
• CPC Class Codes: H01H 2229/022 Modular assembly
• CPC Class Codes: H01H 2229/032 Screw
• CPC Class Codes: H01H 2233/014 Snap coupling
• CPC Class Codes: H01H 2233/058 One degree of freedom
• CPC Class Codes: H01H 2233/074 Snap coupling
• CPC Class Codes: H01H 2235/002 Linear coil spring combined with dome spring
• CPC Class Codes: H01H 2235/008 Rubber spring
• CPC Class Codes: H01H 5/22 blade spring with at least one snap-acting leg and at least one separate contact-carrying or contact-actuating leg

Abstract

A snap-action operable push-button switch has a metal contact of rectangular shape having a pair of rectangular holes at both sides of a central stripe integrally formed therewith, the central stripe being bent toward one side thereof and the metal contact also having a pair of rectangular resilient contact pieces integrally extended therefrom in a size smaller than the size of the rectangular holes.

Claims

1. A nodally operable push-button switch comprising a case, and a flexible conducting metal plate, said plate having a normally curved central stripe and a pair of rectangular holes at both sides of said central stripe integrally formed therewith and also having a pair of resilient contact pieces integrally extended therefrom smaller than the size of the holes, and opposite side edges of said metal plate being drawn so that they are shorter than the said central stripe.

2. A nodally operable push-button switch as set forth in claim 1, further comprising a lever mounted slidably into said case, and a resilient means disposed between the said curved central stripe and said lever.

3. A nodally operable push-button switch as set forth in claim 2, further comprising a printed circuit substrate having stationary contacts, and a frame, said case having legs with claws integrally projected therefrom said claws being engaged with holes provided in said printed circuit substrate, said lever being slidably inserted into said case, and an insulating plate provided on said printed circuit substrate and having a pair of rectangular holes formed therethrough for contacting said stationary contacts.

4. A nodally operable push-button switch as set forth in claim 1, further comprising a printed circuit substrate having a plurality of stationary contacts, a frame having a plurality of holes aligned in a manner crossing at right angles with each other, a plurality of cases each having legs, each of said legs having claw portion for engaging with said printed circuit substrate, a lever slidably inserted into said case, a movable contacting plate disposed at the bottom of said case, said contacting plate having a central strip with a bent portion and having a pair of rectangular holes at both sides of central stripe integrally formed therewith and also having a pair of rectangular resilient contact pieces integrally extended therefrom which are smaller than the size of the holes, and opposite side edges of said metal plate being drawn to be shorter than the central stripe of said metal plate, an insulating plate having a pair of rectangular holes for contacting the stationary contacts provided on said printed circuit substrate, said lever having a spring hole, a resilient material inserted between the spring holes of said lever and the bent portion of said movable contacting plate to form an operating unit, a plurality of said operating units mounted to said printed circuit substrate and said frame, and a plurality of knobs with mounting shafts engaged with the holes of said levers, said levers being slidably inserted into the holes of said frame.