Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
  • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
  • H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
  • H01H13/705—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H2215/00—Tactile feedback
  • H01H2215/004—Collapsible dome or bubble
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H2221/00—Actuators
  • H01H2221/008—Actuators other then push button
  • H01H2221/016—Lever; Rocker

Definitions

• buttons with a rubber bubble e.g. according to the US patent mentioned above,have piston moveme
• the member,.under the rubber bubble, providing contact must therefore be guided such as to be parallel to the contact surface, for ensuring that th will only be one closure when the button is depressed.
• the invention is based on the fact that the contacting controlled by a key mechanism, since the key turns about a mounting centre at its rear edge, which results in that the rubber bubble can be inclined a given number of degrees.
• This construction enables a contact point on the rubber block to come into contact with the substructure first, subsequent to which a second contact on the block comes into contact with the substructure.
• the object of the present invention is thus to provide a key mechanism giving an improved and uniform contact between the contact points in the mechanism.
• the key mechanism in accordance with the invention is illustrated in cross section in Figure 1 along a longitudinal centre Line on the upper side of the key.
• the key 1 is of an implementation known per se, and the rear part 1a thereof is mounted on a shaft 6, the key being pivoted about the shaft 6 on the application of pressure to the forward part 1b, as is known in the art.
• the forward part 1b ' s suitably provided with a plurality of beads or ridges 14, 15, 16, 17, for facilitating depression and preventing slipping.
• On the underside of the forward part there is an intermediate piece 12, and on this guide in the form of a cham * fee d cylindricallyshaped portion 11.
• OMPI give space for the cylindricallyshaped portion 11.
• the rubber mat together with the bubble is of a known kind, e.g. such as is sold by Gummi Maag.
• the block 4 is usually vulcanized to the underside of the rubber bubble, as shown in the figure, and consists of conductive rubber, for example. In the rest position according to Figure 1, the flat surface of the block 4 forms a given (acute) angle with the flat surface of the substructure.

Landscapes

• Push-Button Switches (AREA)
• Input From Keyboards Or The Like (AREA)
• Electrophonic Musical Instruments (AREA)
• Switches With Compound Operations (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=20347653

Family Applications (1)

Country Status (9)

Families Citing this family (4)

Family Cites Families (4)

• 1982
  • 1982-08-30 SE SE8204929A patent/SE432680B/sv not_active IP Right Cessation
• 1983
  • 1983-08-29 ES ES525213A patent/ES525213A0/es active Granted
  • 1983-08-30 WO PCT/SE1983/000308 patent/WO1984001051A1/en not_active Ceased
  • 1983-08-30 IT IT8322681A patent/IT8322681A0/it unknown
  • 1983-08-30 FI FI841575A patent/FI841575A7/fi not_active Application Discontinuation
  • 1983-08-30 JP JP58502892A patent/JPS59501489A/ja active Pending
  • 1983-08-30 EP EP83902832A patent/EP0116623A1/en not_active Withdrawn
• 1984
  • 1984-04-27 DK DK213084A patent/DK213084A/da not_active Application Discontinuation
  • 1984-04-27 NO NO841712A patent/NO841712L/no unknown

Non-Patent Citations (1)

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