Shin Jiuh Corporation

Tsui-Jong Su

Chin-Shan Tsai

Keyboard

Card reader

A computer key includes a base plate, a membrane circuit, a foil sheet, a biasing member, a push button, and first and second linking frames. The base plate includes a first hingeably retaining member and a first slidably retaining guideway spaced from each other in a longitudinal direction and formed with first and second retaining portions for blocking movement in an upward and normal direction. The membrane circuit is disposed on the base plate, and has left and right openings for extension of the first and second retaining portions therethrough. The foil sheet is superimposed on the membrane circuit to sandwich a lower flange on the biasing member therebetween. The first and second linking frames have first and second linking arms connected pivotally at intermediate portions to permit extension of the biasing member such that the latter is disposed between the push button and the base plate. The first linking arms have a lower portion with front and rear hooking ends, wherein the front hooking end can be inserted from a parallel direction relative to a plane of the base plate for retaining the front and rear hooking ends in the first hingeably retaining member of the base plate to block movement in the upward and normal direction.

Computer key

A computer key includes two pairs of pivotally connected linking arms disposed between a base plate and a push button. The push button has a hingeably groove defining portion that defines a hinging axis transverse to said longitudinal direction, and a second slidably retaining guideway disposed in an underside thereof. The groove defining portion includes front and rear bearing support members spaced apart from each other along the hinging axis. The front and rear bearing support members have front and rear outboard walls in the hinging axis and define a distance which is larger than that between two hooking ends of a pair of the linking arms. The front and rear outboard walls have front and rear recesses respectively to form front and rear bearing surfaces respectively transverse to the front and rear outboard walls and facing upwardly toward the underside of the push button. When the hooking ends are to be fitted into the groove defining portion, they are initially forced apart along the hinging axis, thereby permitting press fitting thereof into the front and rear recesses by slipping on the front and rear outboard walls respectively so that the hooking ends are hingeably retained on the front and rear bearing surfaces, respectively.

A common conductor unit for a contact switch includes a conductor body and a movable contact arm. The conductor body includes a U-shaped mounting unit that has upright first and second arm mounting portions and an elongated horizontal connecting portion which interconnects lower end edges of the arm mounting portions. Each of the arm mounting portions has one side which is opposite to the other one of the arm mounting portions and which is formed with a respective horizontal retaining groove. The contact arm is formed as an elongated plate and has a first end portion and a second end portion which is provided with a spring extension unit that extends toward the first end portion. One of the mounting unit and the contact arm is formed with a longitudinal opening to permit extension of the other one of the mounting unit and the contact arm when the contact arm is moved upwardly relative to the conductor body. The first end portion of the contact arm engages the retaining groove on the first arm mounting portion. The spring extension unit engages the retaining groove on the second arm mounting portion and biases the contact arm upwardly. The upper end edge of the second arm mounting portion is formed with a retaining unit to limit upward movement of the contact arm.

Growing community of inventors

Taipei Hsien, Taiwan

Tsui-Jong Su