Matsushita Electric Industrial Co., Ltd.

Panasonic Intellectual Property Management Co., Ltd.

Panasonic Corporation

Hidenori Uematsu

Nobuya Matsutani

Tsunetsugu Imanishi

Kazuaki Onishi

Munekazu Sato

Toshiyuki Asahi

Hitoshi Ishimoto

Junichi Kotani

Koji Shimoyama

Mikio Taoka

Michio Ohba

Hiroshi Tomita

An electrolytic capacitor includes a capacitor element, an exterior body covering the capacitor element, an anode terminal electrically connected to an anode body of the capacitor element, and a cathode terminal electrically connected to a cathode portion of the capacitor element. Each of the anode terminal and the cathode terminal includes a connection portion in contact with the capacitor element, a lead-out portion led out from the connection portion to an outer surface of the exterior body, and an external terminal portion disposed along the outer surface of the external body and having an exposed surface exposed from the external body. At least a part of a covered portion of the lead-out portion, the covered portion being covered with the exterior body, has a cross-sectional shape including a chamfered shape corner portion in a cross section parallel to a surface region of the outer surface of the exterior body where the lead-out portion is led out.

Electrolytic capacitor

A reactor includes a coil body, an exterior case, and a filler. The coil body includes a core and a coil wound around the core. The exterior case includes a metal structure and a resin frame. The metal structure has a bottom surface and a side wall provided to stand upright from the bottom surface. The bottom surface and the side wall of the metal structure are unitarily formed with each other. The frame is disposed at an opposite side to the bottom surface of the metal structure. The exterior case houses the core and the coil. The filler is filled between the exterior case and the coil body.

Reactor

In an inductance component, a stress is not locally applied even in the condition where heat is applied to entire component, such as when implementing soldering, so that high reliability is realized. For realizing this, the component includes an element, a coil formed in the element, terminals electrically connected to the coil, and magnetic layers arranged so as to be substantially parallel to a winding surface of the coil are formed in the element and the entirety of the magnetic layers is covered with a material of which thermal expansion and contraction rate is uniform.

Inductance component

A magnetic element for multi-phase is composed by burying a plurality of coils in a composite magnetic material such that a negative coupling of magnetic fluxes or a positive coupling of magnetic fluxes exists between at least two coils. This structure more miniaturizes inductors, or choke coils as the multi-phase magnetic element suitably used for application of a large current to many kinds of electronic equipment. Such multi-phase magnetic element has an excellent ripple current property.

Magnetic element for multi-phase and method of manufacturing the same

Method of manufacturing a magnetic element for multi-phase

The invention is comprised of a coil group arranging a plurality of terminal-integrated type coils (), () formed by bending a metal sheet in a preset development form and having a predetermined positional relationship, and a magnetic material () burying therein the coil group. For example, axes of the plurality of coils (), () constituting the coil group, are arranged in parallel wherein the center point of at least one coil selected from the plurality of coils (), () and the center point of a coil other than the selected coil are in an staggered arrangement. Due to this, an array type choke coil can be realized which is thin overall and operable with a large current in a high frequency band.

Multiple choke coil and electronic equipment using the same

An inductance part is provided which includes: a coil which is formed by bending a metal plate into a coil shape; a magnetic body in which the coil is buried; and a short ring which faces the coil.

Inductance part and electronic apparatus therewith

The choke coil disclosed comprises: coils incorporated with terminals and intermediate taps manufactured of die cut metal plates; and a magnetic powder in which the coils are embedded.

Choke coil and electronic device using the same

A choke coil according to the invention is configured to include: a coil incorporated with terminals and/or intermediate tap, the coil configured of a metal plate being punched and folded; a magnetic material buried with the coil therein; and a radiator of a material with excellent thermal conductivity disposed on a surface of the magnetic material. A small-sized, low-profile choke coil structurally stable with excellent heat dissipation is to be provided.

Multi-phasemagnetic element and production method therefor

A choke coil for preventing harmonic distortions having a plurality of laminated iron core sheets formed into a core. A first coil is wound around a first limb of a first core, and a second coil is wound around a first limb of a second core. A third coil is wound around the second limb of both the first core and the second core, and the second core is disposed within the magnetic circuit of the first magnetic core. The iron core sheets have embossments formed on a front and back side for fitting the iron core sheets together. The embossments have longitudinal sides formed orthogonally to the direction of magnetic fluxes in the core, and may be inwardly inclined to face each other.

Growing community of inventors

Toyooka, Japan

Hidenori Uematsu