公开(公告)号：US3777082A

公开(公告)日：1973-12-04

申请号：US3777082D

申请日：1972-09-08

Applicant: DONNELLY MIRRORS INC

Inventor： HATLEY D ,  WILSON H

IPC: H01H13/702 ,  H01H13/785 ,  H01H13/14

CPC classification number: H01H13/785 ,  B41J5/08 ,  H01H13/702 ,  H01H2201/026 ,  H01H2203/044 ,  H01H2229/016 ,  H01H2239/026

Abstract: A mechanically operated keyboard with key stations having a multiplicity of electrical switch contacts for providing an encoded electrical data output signal corresponding to and uniquely identifying individual key stations includes an array of movable contacts each corresponding to an individual key station and which are formed in a sheet of conducting material mounted above a corresponding array of fixed contacts to form multiple contact electrical switches for each key station of the keyboard. Each movable contact has a central member suspended to the sheet of conducting material in cantilevered fashion and includes a plurality of peripherally spaced contact fingers joined to the central member such that the contact fingers adjacent the junction of the central member to the conducting sheet will contact associated fixed contacts of a key station only after the remaining contact fingers have come into contact with their associated fixed contacts. An electrical circuit coupled to the contact fingers provides a strobe output signal only when all of the electrical switch contacts associated with a given key station have been actuated as indicated by the closure between the contact finger adjacent the junction of the central member to the conducting sheet and its associated fixed contact.

Abstract translation: 具有键台的机械操作的键盘具有多个电开关触点，用于提供对应于和唯一地识别各个关键站的编码的电数据输出信号，包括每个对应于单独的关键站并且形成在片材中的可移动触点的阵列 的导电材料安装在相应的固定触点阵列上方，以形成键盘每个键盘的多个触点电气开关。 每个可移动触点具有以悬臂方式悬挂在导电材料片上的中心构件，并且包括连接到中心构件的多个外围间隔开的接触指，使得邻近中心构件与导电片的接合的接触指接触相关联 仅在剩余的接触指与其相关联的固定触点接触之后才能进行关键站的固定触点。 耦合到接触指尖的电路仅当与给定的关键站相关联的所有电开关触点已被致动时才提供选通输出信号，如接触指状件在中心构件与导电片之间的接合处的闭合所指示的那样 及其相关的固定联系人。