An assembly includes an electrical switch and an elastically deformable control blade for controlling change of state of its trip member. The control blade comprises: (i) a fixing branch; (ii) an actuation branch which, in the absence of application of an actuation effort, stresses the trip member in the direction of closure of the electrical switch, and (iii) a control branch which can pivot about an axis to provoke tilting of the actuation branch against its elasticity to keep the electrical switch in an open free state. The assembly may include a locking device for locking the control blade in an initial position of delivery of the assembly. The unlocking of the control blade may be provoked automatically upon a first application of an actuation effort on the control blade.

A push switch includes a housing, a fixed contact member, a movable contact member, and a first pressing member. The housing includes an opening and a compartment, the movable contact member includes a dome that protrudes toward the opening and is invertible, and the first pressing member includes a first fulcrum portion, a first load portion, and a first effort portion. The first fulcrum portion is disposed on one side of the first pressing member to contact the housing, the first load portion is disposed on another side of the first pressing member to press the movable contact member, and the first effort portion is disposed between the first fulcrum portion and the first load portion. Upon the first effort portion being pressed through the opening, the first load portion presses and inverts the dome of the movable contact member, and the movable contact member contacts the fixed contact member.

A push switch includes a housing, a fixed contact member, a movable contact member, and a first pressing member. The housing includes an opening and a compartment, the movable contact member includes a dome that protrudes toward the opening and is invertible, and the first pressing member includes a first fulcrum portion, a first load portion, and a first effort portion. The first fulcrum portion is disposed on one side of the first pressing member to contact the housing, the first load portion is disposed on another side of the first pressing member to press the movable contact member, and the first effort portion is disposed between the first fulcrum portion and the first load portion. Upon the first effort portion being pressed through the opening, the first load portion presses and inverts the dome of the movable contact member, and the movable contact member contacts the fixed contact member.

An input apparatus includes a base member, an operating member provided so as to be vertically movable with respect to the base member, the operating member being to be pushed down, a circuit board fixed to the base member and provided under the operating member, a push switch provided on a lower surface of the circuit board, and a link mechanism including a rotational member disposed under the circuit board such that a rotation center shaft is rotatably held by the base member, the rotational member pushing the push switch upward by rotating in response to a push-down operation of the operating member.

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 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 keypad includes a support, a snap disk on a first side of the support transformable from a released state to a loaded state, a cover forming a seal over the first side, a pocket in the cover, a magnet and a plunger disposed in the pocket, the plunger adapted to engage and transform the snap disk to the loaded state, a magnetic field sensor on a second side of the support, the second side opposite the first side and logic circuitry adapted to obtain a value of a strength of a magnetic field from the sensor, compare the value against a predetermined threshold value that corresponds at least approximately to the strength of a magnetic field, and when the plunger has transformed the snap disk to the loaded state and the value reaches or exceeds the threshold value, output a signal indicating that a key press occurred.

A sealed switch having a switch body with first and second switch body sections, a switch contact configured to be disposed in a slot in the first switch body section, a switch contact cover configured to cover the slot, and a seal configured to cover the circumference of the second switch body section.

A push switch includes a stationary contact and a movable contact. The stationary contact includes a base material and a conductive layer that covers the base material. The movable contact is disposed opposite a contact surface of the stationary contact. The movable contact is movable between a first position where the movable contact is in contact with the contact surface and a second position where the movable contact is apart from the contact surface. The stationary contact has a groove that divides the contact surface into a plurality of areas. Connection surfaces connect respective opening edges of the groove with a bottom of the groove. Each of the connection surfaces has a slope that is inclined at acute angle relative to the contact surface.

A switch unit includes a substrate, which includes a hard layer and a soft layer; a first contact point above the soft layer; a second contact point around the first contact point; a conduction spring member which is elastically deformable into contact with the first contact point to make a conduction between the first contact point and the second contact point; a first external electrode; a first through-hole electrode which is electrically connected to the first contact point; and a first wiring pattern, which is electrically connected to the first external electrode and the first through-hole electrode.