Browse Prior Art Database

Basic Operator Panel - Keypad Construction Method

IP.com Disclosure Number: IPCOM000191082D
Original Publication Date: 2009-Dec-22
Included in the Prior Art Database: 2009-Dec-22
Document File: 2 page(s) / 313K

Publishing Venue

Siemens

Related People

Juergen Carstens: CONTACT

Abstract

In many industrial applications keypads are used for user input. In the rough industrial environments, the keypads must have a high IP Code (IP Code: International Protection Rating). Furthermore, they should be easy to manufacture and give a clear tactile feedback to the operator. The current solution employed, uses Polycarbonate pushers on surface mounted micro switches, as illustrated in figure 1. These micro switches are hard to assemble. In addition, the polyester label on the casing would need to be retained. Because of the hard plastic material, the buttons give only an insufficient feedback.

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Basic Operator Panel - Keypad Construction Method

Idea: Martin Staley, GB-Congleton

In many industrial applications keypads are used for user input. I
the keypads must have a high IP Code (IP Code: International Protection Rating). should be easy to manufacture and give a clear tactile feedback to the operator.

The current solu
illustrated in figure 1. These micro switches are hard to assemble. In addition, th the casing would need to be retained. Because of the hard plastic material, the bu insufficient feedback.

In the following a solution is proposed which replaces the micro switches by e carbon pad attache

n the rough industrial environments,

Furthermore, they

tion employed, uses Polycarbonate pushers on surface mounted micro switches, as e polyester label on ttons give only an

                                                 lastic pushers with a d, as shown in figure 2. By pressing the button on the rubber keypad, the carbon pad closes contact on the circuit board.

The advantages of this solution are the improved tactile feedback as well as a cheap and easy manufacturing process.

© SIEMENS AG 2009 file: 2009J21768.doc page: 1

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Page 2 of 2

Figure 1: Existing design layout

Figure 2: New design layout

© SIEMENS AG 2009 file: 2009J21768.doc page: 2

[This page contains 4 pictures or other non-text objects]