Abstract:
A circuit board includes a foil circuit provided on a synthetic resin plate formed by injection molding, made of a copper foil, and having a pattern different for the circuit board. Anchor pins projecting upward are provided on the resin plate and passed through pinholes made in the foil circuit. The foil circuit is positioned and secured to the resin plate. In a required portion of the resin plate, a terminal insertion hole is provided, and a receiving terminal is secured to the required portion of the terminal insertion hole and connected to the foil circuit.
Abstract:
A circuit board includes a foil circuit provided on a synthetic resin plate formed by injection molding, made of a copper foil, and having a pattern different for the circuit board. Anchor pins projecting upward are provided on the resin plate and passed through pinholes made in the foil circuit. The foil circuit is positioned and secured to the resin plate. In a required portion of the resin plate, a terminal insertion hole is provided, and a receiving terminal is secured to the required portion of the terminal insertion hole and connected to the foil circuit.
Abstract:
A board comprising a frame comprised of a thermoplastic resin in which an insert part is embedded and metallized over the entire surface by a metal film. In particular, a method of embedding an insert part, while preventing the metal film from being depositing on the female screw in the insert part, a first aspect of which, at first, forming a metal film on the entire surface of the frame including a through hole in the frame, then press fitting the insert part into the through hole. In the second aspect, before the frame in, which the insert part is held, is formed with the metal film, a masking member that covers the entire surface of the female screw of the insert part is attached.
Abstract:
A sensor unit (1) has a metal plate (10), a resin molded portion (20) and an oil temperature sensor (2). Busbars (4) made of a metal are arranged in the resin molded portion (20). Since the busbars (4) are insert-molded while having the exposed ends (4A) thereof tightly held by a pair of forming dies, a distance between the exposed ends (4A) and the placing surface 10A is held constant. Further, gate marks (5D) of the oil temperature sensor (2) are accommodated in recesses (10B) of the placing surface (10) and engaging grooves (9) and engaging projections (26A) are engaged. Thus, the oil temperature sensor (2) can be held in a proper posture. Additionally, the oil temperature sensor (2) can be held on the placing surface (10A) by riveting the exposed end (4A) and a terminal (8) of the oil temperature sensor (2).
Abstract:
The invention relates to a conducting structure of a multi-layers IC board, which includes conducting rod being received in aperture of the IC board to obtain an effective connection and conduction. And the conducting wire is placed horizontally on the IC board, which has its ending pin and annular metal ring to contact with two apertures respectively and to be welded thereon for perfect conduction and smaller assembled volume.
Abstract:
A coupling and grounding structure of a plasma display device for grounding a circuit board effectively, and fixing the circuit board stably. The plasma display device includes a plasma display panel having a display area, on which images are displayed; a chassis base coupled to a back surface of the plasma display panel; at least one circuit board, on which at least one electronic element for driving the plasma display panel is mounted, the circuit board having a conductive portion and at least one coupling hole to be coupled to the chassis base by a bolt member penetrating the coupling hole; and at least a conductive member which contacts the conductive portion and the bolt member in the coupling hole.
Abstract:
A flashlight is disclosed for use in environments with relatively high levels of vibration forces acting along a predominant axis of light emission of the flashlight. The flashlight includes a lamp having a pair of leads extending rearwardly from the lamp parallel to the predominant axis of light emission and a printed circuit board disposed perpendicular to the predominant axis of transmission. The flashlight further includes a pair of receptacles disposed in the printed circuit board and adapted to receive the pair of leads of the lamp and a conductive adhesive disposed within the receptacles to secure the leads of the lamp within the receptacles of the printed circuit board.
Abstract:
A semiconductor module includes a circuit board provided with a plurality of attachment holes and semiconductor elements or semiconductor devices mounted on the circuit board and a pair of metallic plates. The circuit board is disposed, between the pair of metallic plates, in such a manner that spaces are defined between the circuit board and the pair of metallic plates for accommodating the semiconductor elements or semiconductor devices when the pair of metallic plates are attached to the circuit board. One of the metallic plates is provided at positions corresponding to the attachment holes with through holes and the other metallic plate is provided at positions corresponding to the attachment holes with tubular projections having a length larger than a sum of a thickness of the circuit board and a thickness of the one metallic plate. The tubular projections are inserted into the attachment holes and the through holes and tip ends of the tubular projections are enlarged to firmly attach the pair of metallic plates to the circuit board.
Abstract:
An assembly including a printed-circuit electronics card mounted on a metal substrate, and in electronic communication with the same, includes a capsule which is crimped into a cavity in the metal substrate and which extends through a hole in the electronics card, the edges of said hole being metallised, the capsule being soldered to the metallised area of the edges.
Abstract:
A method and apparatus are described for selectively activating a secondary power source, such as a backup battery, for an electronic device, such as dynamic RAM. A connector is described in conjunction with a circuit board including a first contact coupled to the backup battery, and a second contact coupled to the corresponding input for backup power associated with an electronic device. In this state, an open circuit is presented such that the battery is isolated from the electronic device. A socket is described for cooperating with the connector, which includes mating contacts corresponding to the first and second contacts previously described, and a shunt for establishing electrical continuity between these mating contacts. In this manner, a completed circuit is established between the battery and the electronic device when the socket is attached. A bypass connection is also described for maintaining connection between the battery and the electronic device independent of the socket, so that the circuit board may later be removed without threatening loss of accumulated memory contents.