A cube fuse adapter (1) comprising an adapter housing (2) shaped in the form of a cube fuse and including a pair of fuse reception contacts (4-1, 4-2) provided to receive a cylindrical fuse (5), wherein both fuse reception contacts (4-1, 4-2) are connected to associated electrical contacts (3-1, 3-2) protruding from a bottom side of the adapter housing (2) of said cube fuse adapter (1).

A method for manufacturing a membrane switch member that can be manufactured easily and that can be caused to function as an electrostatic sensor even when a protruding portion is pressed. Injection molding by injecting a material including a supercritical fluid gas and a resin material in a mixed state; and, after the injection molding, removing a first mold from a second mold, causing gas produced within the injection molded resin to grow in concave portions, thereby causing the concave portions to invert to a protruding state; and manufacturing a membrane switch member in which voids are formed between the protruding portions and a molding resin layer, and portions other than the portions corresponding to the protruding portions are adhered to the resin layer by an adhesion layer.

A dome-actuator structure for use in a dome switch is disclosed. The dome-actuator structure comprises a lower substantially horizontal lower dome, an upper actuator portion attached to the lower dome and that is positioned vertically over the lower dome such that depressing of the actuator portion operates to depress the lower dome, and a lateral arm that couples the actuator portion to the lower dome. The lateral arm and the lower dome are formed from a common piece of material. The actuator portion comprises an actuation block, made of plastic or synthetic material or made of natural or synthetic elastomer, fixed to the lateral arm.

A switch that more reliably prevents solvent permeation from the outside, and a manufacturing method thereof are provided. The switch includes a first molded resin molded integrally with a plurality of fixed contacts by insert molding, a movable member disposed above the first molded resin to bring the plurality of fixed contacts into and out of contact with each other, and a second molded resin molded so as to close a through hole of the first molded resin formed by a pin supporting the plurality of fixed contacts at a time of the insert molding.

A switch includes a housing, a switching mechanism housed in the housing and configured to switch a state of connection between at least two terminals exposed out of the housing by using a common contact and two switching contacts, and an electronic component that is disposed in the housing and electrically connects the terminals to each other. The switching mechanism includes a first metal plate that is connected to a first contact, which is one of the common contact and the two switching contacts, and includes a first exposed part to which a first electrode of the electronic component is soldered by laser irradiation, and a second metal plate that is connected to a second contact, which is another one of the common contact and the two switching contacts, and includes a second exposed part to which a second electrode of the electronic component is soldered by laser irradiation.

A dome-actuator structure for use in a dome switch is disclosed. The dome-actuator structure comprises a lower substantially horizontal lower dome, an upper actuator portion attached to the lower dome and that is positioned vertically over the lower dome such that depressing of the actuator portion operates to depress the lower dome, and a lateral arm that couples the actuator portion to the lower dome. The lateral arm and the lower dome are formed from a common piece of material. The actuator portion comprises an actuation block, made of plastic or synthetic material or made of natural or synthetic elastomer, fixed to the lateral arm.

A switch includes a housing, a switching mechanism housed in the housing and configured to switch a state of connection between at least two terminals exposed out of the housing by using a common contact and two switching contacts, and an electronic component that is disposed in the housing and electrically connects the terminals to each other. The switching mechanism includes a first metal plate that is connected to a first contact, which is one of the common contact and the two switching contacts, and includes a first exposed part to which a first electrode of the electronic component is soldered by laser irradiation, and a second metal plate that is connected to a second contact, which is another one of the common contact and the two switching contacts, and includes a second exposed part to which a second electrode of the electronic component is soldered by laser irradiation.

A lead frame 10 includes first and second frames 13, 14 and a fixed contact piece 15. The fixed contact piece 15 is integrally formed with the first frame via a conductive connection part 16. The first frame and the fixed contact piece 15 and the second frame have installation parts 13a, 14a, 14b, 15b to which resistance elements are able to install. The first frame 13 and the fixed contact piece have installation parts 13b, 15a to which resistance elements are able to install. Electrical circuits of different types are formed through combinations of whether the resistance elements are installed to the respective installation parts and whether the conductive connection part 16 is cut off.

A switch includes a housing and a metal terminal that is insert-molded into the housing. The metal terminal includes a contact portion provided on a first side of the metal terminal, an external connection portion provided on a second side of the metal terminal, and an embedded portion provided between the contact portion and the external connection portion and embedded in the housing. In the embedded portion, groove portions are formed in a front surface of the metal terminal and a rear surface of the metal terminal, the groove portions in the front surface being formed at positions different from the groove portions in the rear surface. The groove portions extend in a widthwise direction that is a direction intersecting an extending direction of the embedded portion.

A method for manufacturing a membrane switch member that can be manufactured easily and that can be caused to function as an electrostatic sensor even when a protruding portion is pressed. Injection molding by injecting a material including a supercritical fluid gas and a resin material in a mixed state; and, after the injection molding, removing a first mold from a second mold, causing gas produced within the injection molded resin to grow in concave portions, thereby causing the concave portions to invert to a protruding state; and manufacturing a membrane switch member in which voids are formed between the protruding portions and a molding resin layer, and portions other than the portions corresponding to the protruding portions are adhered to the resin layer by an adhesion layer.