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
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H2221/00—Actuators
  • H01H2221/024—Transmission element
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H2223/00—Casings
  • H01H2223/054—Mounting of key housings on same printed circuit
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H2229/00—Manufacturing
  • H01H2229/02—Laser
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H2229/00—Manufacturing
  • H01H2229/022—Modular assembly
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H2229/00—Manufacturing
  • H01H2229/044—Injection moulding
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H2239/00—Miscellaneous
  • H01H2239/006—Containing a capacitive switch or usable as such

Definitions

• the present invention relates to a keyboard with an international pitch of 19.05 mm used for the introduction of data in office automation, data processing, microcomputing, telematics.
• the role of a keyboard is to allow the passage of a current or information when a key is pressed.
• several solutions exist mechanical contacts, capacitive effect, hall effect, etc.
• the universal keyboard according to the invention makes it possible to avoid these 2 drawbacks, namely:
• the interval between the axis of the lines is generally 1 step, or 19.05 mm, or sometimes an integer multiple of steps.
• the interval between the axis of columns can take values varying from 1/4 step to 1/4 step.
• the universal body of the keyboard performs a function of guiding and positioning the piston.
• the piston constitutes the mobile element making it possible to transmit information when the tou ⁇ che is pressed, its dimensions are always constant, it enters a square with a side equal to the step of 19.05 mm, it has a stroke of 3 to 4 mm.
• the universal body according to the invention is made of molded, plastic or other material. It allows to receive because of its multiple male guides in the form of crenals whose center distance of each of them is 1/4 step, the piston provided with the same female guides in a position that can vary as desired every 1/4 of not. Therefore, it is possible to realize any desired positioning of the pistons. It goes without saying that modifications can be made to the mode of guiding the piston in the universal body by substitution of equivalent means without thereby departing from the scope of the present invention. The essential is to be able to position and guide a piston every 1/4 of a step. According to the desired configuration of the keyboard, the body is cut to its external dimensions by a digitally controlled laser or any other suitable process.
• the keyboard is equipped with mechanical contacts; two fixed contacts and one mobile contact or simply two mobile contacts. Pairs of holes made every quarter of the way ensure the passage of the 2 contacts through the body, the pairs of contacts are placed only when necessary, that is to say that a piston is opposite.
• the contact is capacitive, it is fixed either to the body or to the piston and a hole of appropriate dimensions (from the molding) is made every 1/4 of a step so as to keep
• Figure 1 shows a top view of the universal body, the vertical axis lines 1 - 2 - 3 - 4 - 5 materialize a series of notches used for positioning and guiding the piston. They are separated by 1/4 of a step and indicate the successive positions that a piston can take. It is obvious that this square piston whose side is substantially less than the pitch will be able to withstand a touch whose length will be greater than 1 pitch (example: 1.5 steps or 2 steps or 3 steps, etc.).
• the pins 6, 7 and following are oriented every 1/4 of a step and are used for positioning the spring.
• the pairs of holes 8, 9 and following are centered every 1/4 of a pitch and allow the passage of the contacts 10 (FIG. 2).
• Figure 2 shows a side view in partial section of the keyboard.
• the cabochon 12 traditionally used in all keyboards is here only to give an image of the product.
• the piston 11 is guided in the body 13 using the crenellations. It is kept at rest in the high position by a return spring 14 and remains in this position thanks to a system of clips with a single slope and in the same direction practiced both on the male crenals of the body and female of the piston.
• FIG. 3 shows by way of example a keyboard of 12 keys re ⁇ parties arbitrarily on 3 lines.
• the squares and rectangles materialize the keys, the hatching materialize the pistons supporting the keys.
• keys 15 and 16 are shifted by 1/4 step, keys 16 and 17 by 1/2 step.
• the key 18 has a length of 1.5 steps.
• the key 19 has a length of 2 steps and is supported by the piston 20 centered relative to the key 19.
• This invention is applicable to all types of keyboards with a pitch of 19.05 mm and to all series from the largest to the smallest, by proposing a time for completion of the prototype practically immediate and without incurring any costs of tools, allows us to think of a most profitable industrial operation.

Landscapes

• Input From Keyboards Or The Like (AREA)
• Push-Button Switches (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=9276845

Family Applications (1)

Country Status (3)

Families Citing this family (2)

Family Cites Families (5)

• 1982
  • 1982-08-11 FR FR8214077A patent/FR2531789B1/fr not_active Expired
• 1983
  • 1983-08-05 EP EP19830902532 patent/EP0115512A1/de not_active Withdrawn
  • 1983-08-05 WO PCT/FR1983/000167 patent/WO1984000846A1/fr not_active Ceased

Non-Patent Citations (1)

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