摘要:
A push button switch device includes a push button disposed on a cover constituting an outer surface of an equipment body and light-transmissible, a switching element behind the push button so that its operation axis substantially corresponds with a central axis of the push button, light sources around the switching element to illuminate the push button and operated by the push button, and an incidence surface on a rear surface of the push button so that light from the light sources is incident on it and including a concave curved surface located so as to face the light sources and a convex curved surface located outside and continuous to the concave curved surface. The push button has a recess in a central rear surface so as to be located inside the incidence surface and a light scattering surface on an inner surface of the recess so as to scatter light.
摘要:
An operator manipulating means for a programable electronically controlled sewing machine. The operator manipulating means provides an array of switch points, each related in a row, to discrete needle positions attainable by the electronically controlled sewing machine; and in a column, to the least feed increment attainable thereby. The switch array is fabricated using a pair of printed circuits, one of which must be flexible and each having spaced, parallel conductors, and arranged with respect to each other so that the conductors of one are substantially perpendicular to the conductors of the other and are in facing relationship. The printed circuits are separated in a first embodiment by a pair of insulating sheets, each having an array of apertures in spaced registry with each other and aligned in rows and columns with the conductors on the printed circuits. The pair of insulating sheets are separated by a flexible conducting sheets which may be used as a common conductor. Depression of a conductor on the flexible printed circuit through an aperture of an insulating sheet will establish a connection to the flexible conducting sheet, which conducting sheet will be deflected through the aperture in spaced registry to establish a connection with a conductor of the other printed circuit.
摘要:
A push button switch device mounted on an equipment body includes a push button member disposed on a cover constituting an outer surface of the equipment body, the push button member being configured to be light-transmissible, a switching element located behind the push button member so that its operation axis substantially corresponds with a central axis of the push button member, light sources disposed around the switching element to illuminate the outer surface of the push button member, the light sources being operated by the push button member, and an incidence plane located on a rear surface of the push button member so that light from the light sources is incident thereon, the incidence plane including a concave curved surface that is located so as to substantially face the light sources and a flat or convex curved surface located outside and is continuous to the concave curved surface.
摘要:
A pattern indication arrangement for a pattern selecting device, that is operated by finger-pushing, of a sewing machine, is comprised of a plurality of shorter rectangular pattern indicators; a plurality of longer rectangular pattern indicators, and located on each indicator for actuating the indicators when pushed. Each element is projected from each of the indicators, the shorter rectangular pattern indicators and the longer rectangular pattern indicators are arranged adjacent to each other in longitudinal and transverse directions in alignment with each other in the alternate rows.