Abstract: A connecting unit for establishing a connection with external connecting portions of an electronic device includes a base and a plurality of spiral contactors having a conductive layer and an auxiliary resilient layer. The top face, the bottom face, and both side faces of the conductive layer are completely surrounded by the auxiliary resilient layer. The conductive layer is composed of a material having a specific resistance lower than the specific resistance of the auxiliary resilient layer. The auxiliary resilient layer is composed of a material having a yield point and an elastic modulus higher than the yield point and the elastic modulus of the conductive layer.

Abstract: A connecting element includes a support member, a flexible substrate wrapped around the support member, and elastic contacts provided on the flexible substrate. A positioning hole is formed in the support member. A first positioning component is positioned and soldered on a metal layer formed on a motherboard, and a second positioning component is positioned and soldered on a metal layer formed on an electronic component. The first positioning component is inserted into the positioning hole in the connecting element, and the second positioning member is fitted to the first positioning component. Accordingly, the connecting element is positioned with respect to both the motherboard and the electronic component.

Abstract: A connecting element includes a support member, a flexible substrate wrapped around the support member, and elastic contacts provided on the flexible substrate. A positioning hole is formed in the support member. A first positioning component is positioned and soldered on a metal layer formed on a motherboard, and a second positioning component is positioned and soldered on a metal layer formed on an electronic component. The first positioning component is inserted into the positioning hole in the connecting element, and the second positioning member is fitted to the first positioning component. Accordingly, the connecting element is positioned with respect to both the motherboard and the electronic component.

Abstract: A connecting unit for establishing a connection with external connecting portions of an electronic device includes a base and a plurality of spiral contactors having a conductive layer and an auxiliary resilient layer. The top face, the bottom face, and both side faces of the conductive layer are completely surrounded by the auxiliary resilient layer. The conductive layer is composed of a material having a specific resistance lower than the specific resistance of the auxiliary resilient layer. The auxiliary resilient layer is composed of a material having a yield point and an elastic modulus higher than the yield point and the elastic modulus of the conductive layer.

Abstract: A switch device that prevents a contact failure from occurring between electrode contact points by having a self-cleaning function is provided. When a key top 4 is pushed downward, a portion between a winding start end 7b and a winding terminal end 7c of a spiral contactor 7 is extended by an operation part 3B provided in an actuator 3. At this time, the winding start end 7c slides along the surface of a stationary electrode 5. As a result, dusts or stains attached to the winding terminal end 7c and/or the stationary electrode 5, oxide films formed on the surfaces of the electrodes, etc., is self-cleaned. Therefore, it is possible to solve a contact failure problem between the movable electrode 6 and the stationary electrode 5.

Abstract: A connecting unit for establishing a connection with external connecting portions of an electronic device includes a base and a plurality of spiral contactors having a conductive layer and an auxiliary resilient layer. The top face, the bottom face, and both side faces of the conductive layer are completely surrounded by the auxiliary resilient layer. The conductive layer is composed of a material having a specific resistance lower than the specific resistance of the auxiliary resilient layer. The auxiliary resilient layer is composed of a material having a yield point and an elastic modulus higher than the yield point and the elastic modulus of the conductive layer.

Abstract: A switch device that prevents a contact failure from occurring between electrode contact points by having a self-cleaning function is provided. When a key top 4 is pushed downward, a portion between a winding start end 7b and a winding terminal end 7c of a spiral contactor 7 is extended by an operation part 3B provided in an actuator 3. At this time, the winding start end 7c slides along the surface of a stationary electrode 5. As a result, dusts or stains attached to the winding terminal end 7c and/or the stationary electrode 5, oxide films formed on the surfaces of the electrodes, etc., is self-cleaned. Therefore, it is possible to solve a contact failure problem between the movable electrode 6 and the stationary electrode 5.