公开(公告)号：WO1982002112A1

公开(公告)日：1982-06-24

申请号：PCT/US1981001560

申请日：1981-11-25

Applicant: NCR CORP

Inventor： NCR CORP ,  ALLBRIGHT FORREST E

IPC: H01H13/70

CPC classification number: H01H13/14 ,  H01H13/7006 ,  H01H2221/016

Abstract: Keyboard assembly including a switching assembly (20) having a plurality of pressure-operated switches (24) and a key array (12) overlying the switching assembly (20) and having a plurality of keys (36) formed integrally with a support (38), each key (36) being hinged at one side to the support (38) and having switch actuating means (44) formed integrally therewith. A disadvantage of prior art arrangements of this kind is that the force of restoring the operated key to its home position is not sufficiently positive for entirely satisfactory operation, as the arrangement relies on the resilience of the hinges and of the switch for restoring the key. The invention overcomes this disadvantage by providing switch actuators (44) of a resilient construction which are arranged to assist in restoring the respective key (36) to its home position following operation of the key (36). In a preferred embodiment, each switch actuator (44) has a first end connected to one side of the respective key (36) by means of a toggle hinge (46, 48, 50) and has a second, free end (56) extending across the key (36) to a position beyond the opposite side of the key (36).

Abstract translation: 键盘组件包括具有多个压力开关（24）的开关组件（20）和覆盖开关组件（20）的键阵列（12），并且具有与支撑件（38）一体形成的多个键 ），每个键（36）在一侧铰接到支撑件（38）并具有与其一体形成的开关致动装置（44）。 这种现有技术布置的缺点在于，为了完全令人满意的操作，将操作的键恢复到其原始位置的力不足够，因为排列依赖于铰链和用于恢复钥匙的开关的弹性。 本发明通过提供弹性结构的开关致动器（44）来克服这个缺点，该开关致动器（44）布置成在键（36）的操作之后有助于将相应的键（36）恢复到其原始位置。 在优选实施例中，每个开关致动器（44）具有通过肘节铰链（46,48,50）连接到相应键（36）的一侧的第一端，并且具有延伸的第二自由端（56） 穿过键（36）到超过键（36）的相对侧的位置。