A power transfer switch suitable as a bypass switch connecting a utility feed to a load comprises a bi-stable actuator selectively driven by a compression means charged by a handle. A latch retains the actuator until suitable power source conditions are detected to allow the transfer to proceed. The controller releases the latch and the actuator abuts breakers in sequence to effect a reliable make-before-break or break-before-make transfer.

A member has a first recess, a second recess, and a depression. The depression accommodates a movable member and a contact member. Positioned on a bottom surface of the first recess is a first fixture contact, whereas positioned on a bottom surface of the second recess is a second fixture contact. When a pressure receiving section of the movable member is pressed toward a bottom surface of the depression, the movable member is elastically deformed to separate a movable joint from the contact member. When the pressure receiving section is further pressed toward the bottom surface of the depression, the movable member is elastically deformed to separate the first movable contact from the first fixture contact and to separate the second movable contact from the second fixture contact.

A power transfer switch suitable as a bypass switch connecting a utility feed to a load comprises a bi-stable actuator selectively driven by a compression means charged by a handle. A latch retains the actuator until suitable power source conditions are detected to allow the transfer to proceed. The controller releases the latch and the actuator abuts breakers in sequence to effect a reliable make-before-break or break-before-make transfer.

A switch device includes a first rubber dome, a second rubber dome, and a slider disposed on the first rubber dome and the second rubber dome. The slider presses the upper surface of the first rubber dome, causing deformation of the first rubber dome when the slider is moved toward the first and second rubber domes, and presses the upper surface of the second rubber dome, causing deformation of the second rubber dome when the slider is further moved toward the first and second rubber domes in a state in which the first rubber dome is subjected to the deformation. A thick portion is formed on each side of the second rubber dome so as to increase the thickness on the each side of the second rubber dome. Each side of the second rubber dome is in a direction in which the first and second rubber domes are aligned.

A key structure includes a keycap, a supporting plate, a connecting element, a circuit board and an elastic element. The circuit board is disposed on the supporting plate. The circuit board includes a switch element. A first switch unit of the switch element is formed on a top surface of a first film layer of the circuit board. A second switch unit of the switch element is formed on a top surface of a second film layer of the switch element. When the keycap is depressed in response to an external force, the elastic element is subjected to deformation. Consequently, the first switch unit and the second switch unit are selectively turned on to generate a first key signal and a second key signal.

A switch device and a cooking device having a switch device. The switch device may include a first switch configured to be opened or closed based on contact or non-contact between a first blade and a second blade; a second switch configured to be opened and closed based on contact or non-contact between a third blade and a fourth blade; a housing that accommodates the first switch and the second switch therein; and an actuator disposed in the housing and actuated to selectively open and close the first switch and the second switch.

A switch module includes an outer shell, a button and a bracket. The button is disposed to the outer shell. The button has a base board. One side of a bottom surface of the base board is recessed in the upward direction to form an avoiding groove. A rear of the bottom surface of the base board protrudes in the downward direction to form a driving pillar. The bracket is disposed under the button. A top surface of the bracket is recessed in the downward direction to form an accommodating groove. A top surface of a bottom wall of the accommodating groove is defined as a stopping surface. The driving pillar projects beyond the stopping surface. A front end of the top surface of the bottom wall of the accommodating groove is recessed downward to form an avoiding plane.

The application provides a pressure sensor and a wearable device. The pressure sensor includes a circuit board and a conducting elastic structure; the circuit board includes an electrode area which includes multiple electrode pairs set at intervals; the conducting elastic structure is set on one side of the circuit board and includes a first area; the first area includes a conducting part; when no pressure is applied to the conducting elastic structure, the conducting part is isolated from each electrode pair, so that each electrode pair is in an off state; when a pressure which is greater than a turn-on pressure threshold is applied to the conducting elastic structure, the conducting elastic structure deforms, so that the conducting part contacts with at least one electrode pair, and at least one electrode pair is turned on; wherein the turn-on pressure thresholds of different electrode pairs are different.

According to various examples of the present invention, an electronic device can comprise: a board; a switch unit loaded on at least one surface of the board; a pressure module provided between the board and the switch unit; and a pressure sensing unit formed in at least a partial area of the board, and generating a signal by sensing at least one drive according to the pressing of the switch unit. In addition, the above electronic device can be variously implemented according to examples.

According to the present invention there is provided a button assembly, comprising, a platform having at least two electrodes; a dome member which comprises electrically conductive material, wherein the dome member is electrically connected to at least one of said at least two electrodes, and the dome is arranged so that at least a portion of the dome member overlays at least one other of the at least two electrodes, so that when the dome member is selectively collapsed inwardly by the application of force, the dome member will electrically contact said at least one other of the at least two electrodes, so that in its collapse state the dome member electrically connects the at least one of said at least two electrodes with the at least one other of the at least two electrodes; an interface member which comprises, (a) a compression member which is attached to the dome member at a position which overlays said at least one other of the at least two electrodes; (b) a restrictor member which is configured such that it projects towards the platform and the distance between the platform and the restrictor member is less than the distance between said at least one other of the at least two electrodes and portion of the dome which overlays at least one other of the at least two electrodes, and (c) at least one elastic member which connects the restrictor member and the compression member.