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Browse Prior Art Database

Keyboard Spring Decelerator

IP.com Disclosure Number: IPCOM000048391D
Original Publication Date: 1982-Jan-01
Included in the Prior Art Database: 2005-Feb-08
Document File: 2 page(s) / 26K

Publishing Venue

IBM

Related People

Bersot, JD: AUTHOR [+2]

Abstract

A plastic spring decelerator is molded into the key modules of a keyboard in order to reduce the noise of the keybutton striking the keyboard assembly.

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Keyboard Spring Decelerator

A plastic spring decelerator is molded into the key modules of a keyboard in order to reduce the noise of the keybutton striking the keyboard assembly.

Keybutton 11 is mounted in a reciprocating manner to key module 13. The keybutton 11 has a camming cavity 15 molded therein. Key module 13 has a molded plastic spring 17 adapted to coact with the camming surface 15 as keybutton 11 is depressed downward. Spring 17 deflects on camming surface 15, absorbing some of the energy imparted to keybutton 11 by the machine operator. This reduces the acoustical noise generated when the keybutton 11 bottoms out on key module 13. The parts may be reversed by building a ramp on the key module, serving as a camming surface which mates with plastic molded keybutton spring fingers.

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