公开(公告)号：US4703139A

公开(公告)日：1987-10-27

申请号：US874895

申请日：1986-06-20

Applicant: Bill D. Dunlap

Inventor： Bill D. Dunlap

IPC: H01H13/70 ,  H01H13/80

CPC classification number: H01H13/80 ,  H01H13/7006 ,  H01H2201/002 ,  H01H2205/026 ,  H01H2207/014 ,  H01H2215/004 ,  H01H2215/006 ,  H01H2217/01 ,  H01H2217/016 ,  H01H2225/006 ,  H01H2227/004 ,  H01H2227/022 ,  H01H2227/026 ,  H01H2227/03 ,  H01H2231/022 ,  H01H2233/022

Abstract: A snap dome switch keyboard assembly including a printed circuit board having dual contact switch sites with piggy-back snap domes, button actuators for each of the piggy-back snap domes, and an elastomeric member arranged between the domes and the button actuators serving as a force transmission member materially reducing the contact bounce time.

Abstract translation: 一种快闪式半球开关键盘组件，其包括具有双重接触开关位置的印刷电路板，其具有捎带卡扣圆顶，用于每个背部卡榫圆顶的按钮致动器，以及布置在穹顶和按钮致动器之间的弹性体构件，其用作 力传递部件大大降低了接触反弹时间。

公开(公告)号：US4085306A

公开(公告)日：1978-04-18

申请号：US804945

申请日：1977-06-09

Applicant: Bill D. Dunlap

Inventor： Bill D. Dunlap

IPC: H01H13/70 ,  H01H1/06 ,  H01H13/52

CPC classification number: H01H13/7006 ,  H01H2203/038 ,  H01H2205/026 ,  H01H2207/014 ,  H01H2215/036 ,  H01H2225/006 ,  H01H2227/026

Abstract: A keyboard assembly includes an insulative substrate upon which are carried a plurality of conductive paths. Respective portions of the paths are selectively bridged upon depression of a dome shaped conductive resilient contact element. Each contact element has a single foot disposed along a marginal portion thereof to allow the dome shaped element to be deformed downwardly upon depression at its apex. The foot of each contact element is in physical and electrical contact with selected ones of the conductive paths and the dome shaped element is adapted to simultaneously engage a plurality of such paths upon depression at the apex. An indentation is provided in the substrate immediately beneath the apex of each contact element to better assure simultaneous contact of the plurality of conductive paths immediately beneath the dome shaped contact element.

Abstract translation: 键盘组件包括绝缘基板，承载着多个导电路径。 在按压圆顶状导电弹性接触元件时，路径的相应部分选择性地桥接。 每个接触元件具有沿其边缘部分设置的单脚，以允许圆顶形元件在其顶点处凹陷时向下变形。 每个接触元件的脚与所选择的导电路径物理和电接触，并且圆顶形元件适于在顶点处凹陷时同时接合多个这样的路径。 在每个接触元件的顶点正下方的衬底中提供凹陷，以更好地确保在圆顶形接触元件正下方的多个导电路径的同时接触。

公开(公告)号：US4195210A

公开(公告)日：1980-03-25

申请号：US15808

申请日：1979-02-27

Applicant: Walter R. Pounds ,  Bill D. Dunlap

Inventor： Walter R. Pounds ,  Bill D. Dunlap

IPC: H01H1/40 ,  H01H13/12 ,  H01H13/70 ,  H01H1/24 ,  H01H13/52

CPC classification number: H01H1/403 ,  H01H13/12 ,  H01H13/7006 ,  H01H2227/026

Abstract: A switching assembly includes an insulative substrate upon which is carried a plurality of conductive paths respective portions of which are selectively bridged upon depression of a resilient conductive contact element. That contact element is generally in the shape of a dome and has a central region of substantially planar conformation from which the remainder of the dome slants integrally downward and outward to a lower marginal rim portion. The dome-shaped element is disposed adjacent to the substrate with at least a portion of its rim portion electrically and physically contacting one of the portions of one of the paths. The central region is generally in registry over another of the portions in another of the paths so as to enable connection between the central region and that other portion upon depression of the central region.

Abstract translation: 开关组件包括绝缘衬底，在绝缘衬底上承载有多个导电路径，其中各个部分在弹性导电接触元件压下时选择性地桥接。 该接触元件通常为圆顶形，并且具有基本上平面构造的中心区域，其中圆顶的其余部分从该中心区域向下并向外整齐地向下边缘边缘部分倾斜。 圆顶形元件邻近基板设置，其边缘部分的至少一部分电和物理地接触一个路径的一个部分。 中心区域通常在另一个路径中的另一个部分上对准，以便当中央区域被按压时能够使中心区域和该另一部分之间的连接。