JPH0397833U

JPH0397833U -

Info

Publication number: JPH0397833U
Application number: JP655590U
Authority: JP
Priority date: 1990-01-26
Filing date: 1990-01-26
Publication date: 1991-10-09

Description

[Brief explanation of drawings]

第１図は本考案の一実施例のキー入力装置２の
構造を一部簡略化して示す分解斜視図、第２図は
その組立て構造を示す分解斜視図、第３図はキー
入力装置２の電気回路図、第４図は本考案の他の
実施例による固定接点シート１３の構造を一部簡
略化して示す斜視図、第５図はその電気回路図、
第６図はキー入力装置の使用例を示す斜視図、第
７図は従来の技術によるキー入力装置２２の構造
を一部簡略化して示す分解斜視図、第８図はその
電気回路図、第９図は従来の技術に用いられる判
別用信号の波形図である。２……キー入力装置、３，１３……固定接点シ
ート、３ａ〜３ｆ……固定接点、３ｇ，５ｇ……
フラツトケーブル、３ｈ……第１端子、４……絶
縁スペーサ、５……可動接点シート、５ａ〜５ｆ
……可動接点、５ｈ……第２端子、６……タツチ
シート、８ｂ……マイクロコンピユータ、ＩＰ…
…入力ポート。 FIG. 1 is an exploded perspective view showing a partially simplified structure of a key input device 2 according to an embodiment of the present invention, FIG. 2 is an exploded perspective view showing its assembled structure, and FIG. 4 is a partially simplified perspective view showing the structure of a fixed contact sheet 13 according to another embodiment of the present invention; FIG. 5 is an electric circuit diagram thereof;
FIG. 6 is a perspective view showing an example of use of the key input device, FIG. 7 is an exploded perspective view showing a partially simplified structure of the key input device 22 according to the prior art, and FIG. 8 is an electric circuit diagram thereof. FIG. 9 is a waveform diagram of a discrimination signal used in the conventional technique. 2... Key input device, 3, 13... Fixed contact sheet, 3a to 3f... Fixed contact, 3g, 5g...
Flat cable, 3h...First terminal, 4...Insulating spacer, 5...Movable contact sheet, 5a to 5f
...Movable contact, 5h...Second terminal, 6...Touch sheet, 8b...Microcomputer, IP...
...input port.

Claims

[Claims for Utility Model Registration] A base body on which a plurality of fixed contacts are formed at intervals from each other, and a movable contact that is disposed opposite to the base body and corresponds individually to each of the fixed contacts. a sheet-like body; and an intervening member made of a flexible electrically insulating material, the intervening member being disposed between the base body and the sheet-like body, having a through hole corresponding to each of the fixed contacts, and made of a flexible electrically insulating material. A key input device in which the movable contact and a pair of fixed contacts are electrically connected by pressing a position corresponding to the movable contact to form a key switch, wherein each of the fixed contacts is connected to a first terminal. each movable contact is commonly connected to a second terminal, at least one of the fixed contact and the movable contact is formed of a material having electrical resistance, and the impedance from the first terminal to the second terminal is A key input device characterized in that each key switch is formed to be different from each other.