Abstract: A fixed electrode configured to face a diaphragm and forming a capacitance with the diaphragm, including a plurality of protrusions formed by plastic deformation on one surface of the fixed electrode that is to face the diaphragm, so as to protrude toward the diaphragm.

Abstract: A fixed electrode configured to face a diaphragm and forming a capacitance with the diaphragm, including a plurality of protrusions formed by plastic deformation on one surface of the fixed electrode that is to face the diaphragm, so as to protrude toward the diaphragm.

Abstract: A rail bond which achieves high durability and high reliability in response to vibration caused by running of trains is provided. [Solving Means] A rail bond according to the present invention includes a conductor that electrically connects rails separately adjacent to each other, terminals electrically connected to the conductor and welded on side surfaces of the rails, and end-edges at which the conductor is connected to the terminals. Each of the terminals has a welding region welded on the side surface of the rail, and, in a direction almost perpendicular to the side surface of the rail, the welding region, the terminal, the end-edge, and the conductor have a predetermined relationship with respect to at least one of positions, mutual shapes, lamination, and a lamination structure.

Abstract: An keyboard assembly for an electronic musical instrument is mainly constructed by a key frame, a key, a key switch and an assembly guide member. A fixing portion of the key is supported by the key frame such that a front portion of the key can be freely rotated up and down. An actuator is attached to and projected downward from a lower side of the key. The key switch (or a key-depression sensor) has an elastic projecting portion at its upper end. This key switch is provided on the key frame and is driven by the actuator, which depresses down the elastic projecting portion of the key switch when the key is depressed down. The assembly guide member guides the key when the key is moved in an assembling direction (i.e., a longitudinal direction of the key) in order to carry out an assembling operation to assemble the key and the key frame together.

Abstract: An keyboard assembly for an electronic musical instrument is mainly constructed by a key frame, a key, a key switch and an assembly guide member. A fixing portion of the key is supported by the key frame such that a front portion of the key can be freely rotated up and down. An actuator is attached to and projected downward from a lower side of the key. The key switch (or a key-depression sensor) has an elastic projecting portion at its upper end. This key switch is provided on the key frame and is driven by the actuator, which depresses down the elastic projecting portion of the key switch when the key is depressed down. The assembly guide member guides the key when the key is moved in an assembling direction (i.e., a longitudinal direction of the key) in order to carry out an assembling operation to assemble the key and the key frame together.

Abstract: A switch apparatus has a fixed contact including a contact pattern formed on a printed substrate and a movable contact provided above and opposing the fixed contact. A switching operation is performed by engaging the movable contact with the fixed contact. The fixed contact pattern has a first pair of fixed contacts and a second pair of fixed contacts. The fixed contact patterns are separated by a predetermined distance from one another. The movable contact has a first movable contact and a second movable contact for engagement with the first and the second pairs of fixed contacts, respectively. One of the first pair of fixed contacts and one of the second pair of fixed contacts are formed in a unit to define a common pattern. Only the common pattern is disposed between the other of the first pair of fixed contacts and the other of the second pair of fixed contacts.