Murata Manufacturing Co., Ltd.

Kazunori Kinoshita

Katsuo Ito

Eiichi Hibino

Kazuhiro Tsuji

Yoji Maeda

Takami Yamamoto

Shigeki Takase

Bunjiro Murata

Masao Uno

Sadao Kotera

Kiyoshi Kawakita

Masahiro Nishimura

An electronic component is mounted on one major surface of a dual side wiring substrate. A terminal is press-fitted into a mounting hole in the dual side wiring substrate from the one major surface side to be temporarily fixed in the substrate, and an electronic component is mounted on the other major surface of the dual side wiring substrate after soldering paste is applied. A frame having a plurality of bent pieces extending inwardly is mounted onto the dual face wiring substrate from a position above the substrate so that the bent pieces abut against the pattern of the dual side wiring substrate. The terminal press-fitted from the one major surface side, the electronic component mounted on the other major surface, and the frame are soldered simultaneously by a reflow method.

Method of manufacturing circuit module

A high frequency device having a shield casing with the interior divided into small sections by shield plates, and with circuit blocks of a high frequency circuit in the respective sections including substrates with circuit components on the upper surface with terminals extending through the substrate to a printed circuit on the lower surface. A feedthrough capacitor is mounted in the casing or in the shield plate, or both, in a level corresponding to the level of the substrate, such that the feedthrough terminal of the capacitor extends adjacent the printed circuit, and such that, when the device is immersed in solder to solder the terminals of the components to the printed circuit, the feedthrough terminal of the capacitor is also soldered to the printed circuit and the capacitor itself is also soldered to the casing or the shield plate. Further, steadying fingers are provided around the fixing hole portion in the casing or plate, and these are spaced around the periphery of the fixing hole portion so that the two fingers nearest the bottom edge of the casing or plate are a maximum distance from the edge, so as to maximize the resistance of the casing or plate to distortion when the fingers are bent laterally from within the fixing hole portion.

Structure for fixing feedthrough capacitor in high-frequency device and

An antenna device used for a UHF tuner or the like, which comprises a combination of an antenna coil formed of single-covered wire with an insulator covering the antenna coil. The insulator is dividedly molded into a coil containing member having an antenna coil containing recess and a terminal member having a pair of antenna terminals and a resistor containing recess, a fitting portion to be fitted between the coil containing member and the terminal member is provided, and at the terminal member a cover for closing an opening at the coil containing recess. The coil containing member containing the antenna coil in the coil containing recess and the terminal member containing a resistor in the resistor containing recess are integrally connected by press-fitting of the fitting portion and the antenna coil is housed in the insulator, thereby obtaining the insulating property equivalent to a double covered wire without deforming the the coil during or after the assembly of the antenna device.

Antenna coil with integral housing

A construction for attaching terminals for a high frequency apparatus wherein a plurality of lead terminals are press-fitted in a terminal holder made of resin, and the terminal holder with the lead terminals inserted in apertures in a circuit board is clamped between the circuit board fixed to a chassis and a shield plate installed in the chassis.

High frequency apparatus chassis and circuit board construction

An electrical shielding case for shielding a plurality of circuits from each other, which includes a plurality of plate portions formed by dividing a metallic flat plate, and remaining parts of the plate portions left for connection when outer peripheries of the plate portions are cut off, with each of the plate portions being folded at the remaining portions as fulcrums so as to form the electrical shielding case, and is characterized in that there are provided bendable cut and raised portions formed at parts of other confronting plate portions interfering with end faces of the plate portions upon folding thereof.

Electrical shielding case

A mounting structure for temporarily mounting electronic parts fitted into a mounting bore formed in a frame and fixedly soldered at the fitted portion thereto enhances assembly and soldering. The mounting structure includes a tongue integral with the frame, folded thereover, and positioned around the mounting bore, so that the electronic part fitted therein is elastically fixedly supported on the frame by the tongue although the mounting bore is formed slightly larger in diameter than the fitted portion of the electronic part. The electronic part is thus temporarily fixedly held in the frame for being fixedly soldered to the frame with accuracy.

Mounting structure for electronic parts

A feedthrough capacitor arrangement which comprises a frame having a first recess, printed circuit boards disposed in the vicinity of the frame, a feedthrough capacitor having an outer electrode and a central electrode placed in the first recess and a shield member for pressing the feedthrough capacitor placed in the first recess thereby to hold the feedthrough capacitor in association with the frame. In this arrangement, the outer electrode of the feedthrough capacitor is soldered to the frame and to the shield member while the central electrode is soldered to conductor patterns on the printed circuit boards.

Growing community of inventors

Nagaokakyo, Japan

Kazunori Kinoshita