Murata Manufacturing Co., Ltd.

Makoto Kitamura

Shigeki Takahashi

Nihei Kaishita

Takeshi Takeda

Yoshio Oda

Takao Zuinen

Katsumi Fujimoto

Eitaro Kameda

Katsumi Kohnishi

Toshiki Nishiwaki

Ryo Matoba

Yuji Fujino

Naoaki Fujino

Shigeyuki Takeuchi

Tadanori Higaki

Kouki Sai

A common mode choke coil comprising a core; a first wire and a second wire wound around the core; a first electrode part and a second electrode part disposed on the core and connected to the first wire; and a third electrode part and a fourth electrode part disposed on the core and connected to the second wire. The common mode choke coil has a self-resonance frequency of 700 MHz or more, and a common mode inductance of 300 nH or less, in a frequency band of 1 MHz or less.

Common mode choke coil and wireless charging circuit

A piezoelectric power generating device that includes a piezoelectric element having a first surface and a second surface opposite the first surface, a stopper, and a lever. The stopper has a first contact surface that is in contact with the first surface. The lever includes a contact portion, which includes a second contact surface that is in contact with the second surface, and a displacement portion. The lever is arranged in such a manner as to be rotatable relative to the stopper around a rotation axis such that the second contact surface presses the second surface when the displacement portion rotates relative to the stopper around the rotation axis.

Piezoelectric power generating device having a stress applying member

Provides is a method of manufacturing an insert-molded article enabling to perform resin molding and tie bar cutting in one step and so as not to expose the cut planes of the tie bars to the external surface of the resin. A lead frameprovided with easily breakable notchesat positions closer to the metal component than the interfaces of tie barsto be resin molded is prepared and positioned by means of pilot pinsprovided to a lower mold. A metal componentis sandwiched between support protrusionsand component fixing pinsby lowering an upper moldwith the lead frame being positioned. Tie bar cutting punchesprovided to the upper moldare pressed against the tie bars, the tie barsare separated from the metal componentby breaking the notches, and the surroundings of the metal componentare filled with resin while the molds are closed. By this, the cut surfaces between the metal componentand the tie barsare buried in the molded resin

Method of manufacturing insert-molded article and apparatus therefor

A receptacle for coaxial connector includes an outer conductor having a tubular portion, a central conductor having a central-conductor contact portion extending in an axis direction in an internal space of the tubular portion, and an insulator holding the outer conductor and the central conductor in an insulating state. An overhanging region made of the outer conductor and the insulator overhangs in a direction perpendicular to the tubular portion of the outer conductor. In this overhanging region, the outer conductor includes outer-conductor overhanging portions, and the insulator includes an insulator overhanging portion. The outer-conductor overhanging portions and the insulator overhanging portion have substantially the same thickness.

Receptacle for coaxial connector

Described herein is a receptacle for coaxial connector whose outer shape is made small and short in height while ensuring reliability. The receptacle for coaxial connector includes an outer conductor having a tubular portion, a central conductor having a contact portion extending in an axis direction in an internal space of the tubular portion, and an insulator holding the outer conductor and the central conductor in an insulating state. A region of the central conductor other than a central-conductor drawing portion thereof has outwardly projected portions in planar view of the central conductor.

Receptacle with an inner conductor surrounded by an outer conductor and an insulator having overhung portions

An electronic component package that provides a high shielding performance and that can prevent failures such as short-circuiting with a component contained therein. A package includes a shield case formed of a metal plate and shaped to have a bottom portion, the bottom portion having a through hole; a resin case molded on inner and outer surfaces of the shield case and shaped to have a bottom portion; and a hot terminal that is insert-molded in the resin case such that the hot terminal is inserted into the shield case through the through hole without contact. One end of the hot terminal is exposed at an inner surface of the resin case, and the other end of the hot terminal is exposed at an outer surface of the resin case. An element contained in the package is surrounded by the shield case so that good shielding performance is obtained.

Electronic component package, electronic component using the package, and method for manufacturing electronic component package

A dry forming apparatus includes a carrying table (mold-transfer mechanism) which transfers a mold containing a die and punch units at least between a powder supply stage, a pressing stage, and a formed-product removing stage, a pressing driving mechanism which drives the punch units for pressing in the pressing stage, a connecting mechanism which connects punch units to the pressing driving mechanism when the mold is transferred to the pressing stage, and releases the connection of the punch units, and a unit holding mechanism which holds the punch units while the units are transferred to the next stage.

Powder press forming apparatus and method of powder press forming

A powder molding apparatus comprises a mold comprising a die having a powder molding space and upper and lower punch units, and a compression driving mechanism for performing compression molding by driving the upper and lower punch units independently, wherein molded articles formed by the compression molding are held by engaging lower first and second punches serving as a formed article holding mechanism at the time of transporting the molded articles. Thus, the molded articles can be prevented from falling or shifting while being transported between stages, thereby providing a powder molding apparatus capable of high speeds.

Growing community of inventors

Omihachiman, Japan

Makoto Kitamura