The invention provides an axially actuating tactile electrical switch comprising a casing; a plurality of independent fixed electrical contacts arranged in a base of the casing, and a movable electrical contact comprising a peripheral portion resting on a portion of a fixed peripheral electrical contact and a central portion movable vertically downwards; a single piece actuating body made of elastic material comprising a peripheral portion, an actuating central part comprising a lower portion for actuating the movable electrical contact, and an upper portion for receiving an actuating force, forming a casing comprising an upper cover having a hole whereby a free upper end section of the upper portion extends axially; the cover has an internal retaining surface; and the actuating body has an abutment surface cooperating with the internal retaining surface of the cover to determine an upper rest position of the actuating body with respect to the casing.

A control device includes a button assembly having one or more buttons and a button carrier that includes a plurality of resilient, independently deflectable spring arms. The control device may be configured as a wall-mounted keypad to control a load control device, or as a thermostat to control a temperature regulation appliance. The button carrier may be configured to prevent interference between the buttons during operation of the control device. The button assembly may be captured between a faceplate of the control device and a housing that is attached to a rear side of the faceplate. The control device may include one or more button retainers that are attached to the buttons and that are configured to align respective outer surfaces of the buttons relative to each other, and relative to the faceplate of the control device, when the buttons are in respective rest positions.

A spring has a dome portion having a dome shape bulging convexly, an outer peripheral portion disposed along the entire periphery of the dome portion, first and second support portions disposed at both ends of the outer peripheral portion, a valley bending portion disposed between the dome portion and the outer peripheral portion, and bent concavely upward, a first crest bending portion disposed between the outer peripheral portion and the first support portion, and bent convexly upward, and a second crest bending portion disposed between the outer peripheral portion and the second support portion, and bent convexly upward, wherein the outer peripheral portion includes a first and second side end portions which are not connected with the first and second support portions, and the valley bending portion disposed between the dome portion and the first and second side end portions extends linearly or curved inwardly in a longitudinal direction.

A movable contact includes a conductive member having an outer end having substantially a rectangular shape when viewed from above the conductive member. The conductive member includes a dome portion, a flange extending in a direction away from the dome portion, a connection portions provided at each of four corners of the rectangular shape, and a contact portion extending away from the flange. The connection portion, a first boundary portion where the connection portion is connected to the flange, and a second boundary portion where the connection portion is connected to the contact portion may constitute a drawn portion. Alternatively, the first and second boundary portions may be curved to be concave toward the dome portion.

A push switch includes a case having a containable portion defined by a bottom plate and a wall portion, a central contact provided on the bottom plate, an outer contact provided on the bottom plate so as to be spaced from the central contact in the containable portion, a movable contact disposed above the central contact and the outer contact, a cover film disposed so as to cover the containable portion, and a disc-shaped pressing member provided between the movable contact and the cover film. By pressing the pressing member downward, the movable contact is displaced from a first position to a second position. A diameter R of the pressing member is in the range of 30 to 45% of the width in the longer side direction of the movable contact and in the range of 45 to 60% of the width in the shorter side direction of the movable contact in a plan view.

A push-button switch member includes: a movable contact and an operation key disposed facing the protruding side thereof, and in contact therewith or spaced therefrom. The movable contact includes: an upper contact portion disposed directly under a key body; an outer fixed portion in the upper contact portion or more outward therefrom in the radial direction, and fixed more outward in the radial direction than the key body; and a non-contacting outer portion provided more outward in the radial direction than the upper contact portion, and disposed to face in a non-contacting state another contact so as to be able to contact another contact which is disposed on an outer side in the radial direction and contacted by the upper contact portion when pushed by the key body. The non-contacting outer portion has a bottom portion for a line contact or a surface contact with another contact.

A membrane digital analog switch includes an input button surface adapted to receive an input pressure from a user, and a digital switch positioned below the input button surface to generate a digital switch activation signal when the received pressure on the input button surface is greater than or equal to a specified digital pressure threshold. The membrane digital analog switch also includes an analog switch adapted to generate an analog switch activation signal when the received pressure on the input button surface is greater than or equal to a specified analog pressure threshold. The specified analog pressure threshold is greater than the specified digital pressure threshold, the digital switch activation signal is a binary digital signal, and the analog switch activation signal is variable and corresponds to an analog sensed value of the received pressure on the input button surface.

A spring has a dome portion having a dome shape bulging convexly, an outer peripheral portion disposed along the entire periphery of the dome portion, first and second support portions disposed at both ends of the outer peripheral portion, a valley bending portion disposed between the dome portion and the outer peripheral portion, and bent concavely upward, a first crest bending portion disposed between the outer peripheral portion and the first support portion, and bent convexly upward, and a second crest bending portion disposed between the outer peripheral portion and the second support portion, and bent convexly upward, wherein the outer peripheral portion includes a first and second side end portions which are not connected with the first and second support portions, and the valley bending portion disposed between the dome portion and the first and second side end portions extends linearly or curved inwardly in a longitudinal direction.

A movable contact includes a conductive member having an outer end having substantially a rectangular shape when viewed from above the conductive member. The conductive member includes a dome portion, a flange extending in a direction away from the dome portion, a connection portions provided at each of four corners of the rectangular shape, and a contact portion extending away from the flange. The connection portion, a first boundary portion where the connection portion is connected to the flange, and a second boundary portion where the connection portion is connected to the contact portion may constitute a drawn portion. Alternatively, the first and second boundary portions may be curved to be concave toward the dome portion.

A light-emitting assembly positioned within a switch housing of a keyboard assembly for an electronic device is disclosed. The light-emitting assembly may include a phosphor structure, a transparent material positioned on opposing side surfaces of the phosphor structure, and an epoxy layer formed over an entire back surface of the phosphor structure and the transparent material. The light-emitting assembly may also include a mask layer formed over an entire top surface of: the phosphor structure, the transparent material, and the epoxy layer. The light-emitting assembly may further include a light source positioned within the phosphor structure for emitting a light.