Sumida Corporation

Fps Inc.

Fumihito Meguro

Shuichi Kikuchi

Takehiro Nakano

Tatsumi Nishino

Tsuyoshi Sato

Masashi Hori

Takanobu Rokuka

Yoshiyuki Hatayama

Yoshiki Kudo

Yuichiro Urano

Shinji Okamura

Kuniyuki Kobayashi

Masahiro Iwata

Yoshio Kawahata

Tomomi Nakatsuka

Hiromi Sotome

The present invention provides a coil component provided with a magnetic core and a coil wound around the magnetic core. The coil component of the present invention is provided with an eddy-current generation member using any one of or any combination of a tape member using a conductive metallic foil, a thin film using a conductive metal material, a ribbon using a conductive metal material, a coated film using a conductive metal material, and a plate member using a conductive metal material. In a coil antenna adopting the coil component of the present invention, it is enabled to adjust the Q value to a desired value without increasing the direct current resistance value.

Coil component

A flat acoustic transducer () includes a permanent magnet () and a magnetic member (), which are arranged adjacent to each other with a predetermined interval, a flat vibrating membrane (), provided facing the permanent magnet () and the magnetic member (), and at least one coil (), fixed to the vibrating membrane (). In the flat acoustic transducer (), an electrical signal is applied to the coil (), to obtain vibration force (F) on the vibrating membrane () by way of a magnetic flux &#x3a6; generated between a magnetic pole face () of the permanent magnet () and the magnetic member (), a step () is provided between the magnetic pole face () and the upper face () of the magnetic member (), while at least part of a winding () of the coil () at the time of no application of an electrical signal is arranged inside the step ().

Flat acoustic transducer and method for driving the same

An antenna coil may include a first coil portion wound with coil wire; a second coil portion wound with coil wire and intersecting with the first coil portion; and a case having a coil receiving portion receiving the first coil portion and the second coil portion, in which the first coil portion and the second coil portion are disposed so that extending directions of the respective coil portions are directed in diagonals direction of the coil receiving portion.

Antenna coil

In the winding wire at the winding completion end side, two wires are piled up vertically and wound together from the inner circumferential side towards the outer circumferential side. The winding wire at the winding start end side that has remained on the inner circumferential side is drawn forth from the inner circumferential side to the outer circumferential side so as to form a curve along the flat surface of the coil. In the crossing portions of the winding wire at the winding completion end side and the winding wire at the winding start end side, the two wires of each winding wire are superimposed and caused to cross each other in a state in which the wires are laid down transversely.

Coil

A coil part used in a antenna coil has a cross shape core that includes: a first winding frame part extending a first direction and being provided with a coil, and a second winding frame part extending a direction crossing the first direction and being provided with a coil. A first core including the first winding frame part is interlocked with a second coreincluding the second winding frame part.

Coil parts

A problem to be solved is to stabilize temperature characteristics in various characteristics of a magnetic element. A magnetic element has a coil formed by winding a conductor, EP cores constituted of a magnetic material and passing magnetic flux generated in the coil, a solid part provided between EP cores opposing each other among the EP cores, and having a ceramics material or a resin material, in which the solid part is in contact with opposing faces of the respective opposing EP cores, and the solid part is provided with a thickness dimension ranging from 3 &#x3bc;m to 30 &#x3bc;m.

Magnetic element and method of manufacturing magnetic element

Growing community of inventors

Tokyo, Japan

Fumihito Meguro