Browse Prior Art Database

Push-Button Structure

IP.com Disclosure Number: IPCOM000120120D
Original Publication Date: 1991-Mar-01
Included in the Prior Art Database: 2005-Apr-02
Document File: 2 page(s) / 53K

Publishing Venue

IBM

Related People

Nomura, H: AUTHOR [+2]

Abstract

Described herein is a push-button structure for a power-on switch of a FDD or an optical disk drive.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Push-Button Structure

      Described herein is a push-button structure for a
power-on switch of a FDD or an optical disk drive.

      Figs. 1, 2 and 4 show this invention while Fig. 3 shows a prior
art.  The main components of this push-button structure is comprised
of a button, a bezel, a coil spring, an actuator plate, and a screw,
which is the same as the prior art structure.  The difference between
this invention and the prior art is the position of the coil spring.
In the prior art, the spring coil is positioned between the button
and the bezel, as shown in Fig. 3.  On the contrary, in this
invention, the spring coil is positioned between the bezel and the
actuator plate so that the actuator plate is touching the switch of
the FDD, etc., in other words, so that there is no gap between the
actuator plate and the switch.

      As shown in Fig. 3, the distance between the switch of the FDD,
etc. and the bezel has a tolerance which causes the gap between the
actuator plate and the switch.  At the beginning of pushing the
button, the operator feels only the force from the coil spring, but
upon the moment the actuator touches the switch, the operator feels
both of the forces from the coil spring and the switch.  This results
in the incorrect feeling of switching on.

      As shown in Fig. 4, in this invention, there is no gap between
the actuator plate and switch.  Therefore, according to this
invention, incorrect feeling is eliminated.