Toko, Inc.

Toko Kabushiki Kaisha

Toko Co., Ltd

Shin Murakami

Masayoshi Yagi

Shingo Shimizu

Akihiro Koga

Kuniyoshi Sakurada

A bar antenna comprises: a bar core configured to connect at least two of core pieces in series, a bobbin covering at least a portion of the bar core, a winding wound in a predetermined range of the bobbin, and a case having the bar core and the bobbin disposed therein, wherein the bar core and the bobbin are sealed by filling in the case with a potting material, and the bar core is configured to be bendable with respect to a predetermined external force at a connection portion of the at least two of core pieces.

Bar antenna

The present invention provides an antenna coil which can be made smaller and intends to improve a receiving sensitivity in consideration of all directions. According to one embodiment of the present invention, an antenna coil including: a first coilhaving an X-axis coil wound on an X axis of a first core and a Z-axis coil wound on a Z axis of the first core, the thickness direction of the first core being determined to be the Z-axis, an axis orthogonal to the Z axis being determined to be the X axis; a second coilhaving a Y-axis coil wound around a second core, the second core having flanges at both ends; four external terminalseach connected to a corresponding end of the X-axis coil or the Z-axis coil and additionally provided on the first core; and two external terminalseach connected to a corresponding end of the Y-axis coil and additionally provided on the second core. The first coiland the second coilare arranged to be close to each other so that winding axis directions of the X-axis coil, the Y-axis coil, and the Z-axis coil are orthogonal to each other. The first coiland the second coilare integrally molded using an exterior resin, leaving part of each of the external terminals to be connected to an external circuit.

Antenna coil and manufacturing method thereof

A miniature surface-mount electronic component which can ensure sufficient impact resistance and vibration resistance especially in an application to a severe use environment such as a vehicle-mounted coil, by putting some contrivance into a method for fixing a coil in a molding process and a method for holding a core and terminals. A miniature surface-mount electronic component including a bar-shaped coreon which a winding wireis wound, and metal plates, with an outer casingmade of an insulating resin molded, includes flangessubstantially quadrangular in section at both ends of the bar-shaped core, and vertical grooves a and b are provided on side surfaces of the flangesof the bar-shaped coreas fixing portions for preventing positional displacement occurring when the outer casingis molded.

Method for manufacturing a miniature surface-mount electronic component

A miniature surface-mount electronic component which can ensure sufficient impact resistance and vibration resistance especially in an application to a severe use environment such as a vehicle-mounted coil, by putting some contrivance into a method for fixing a coil in a molding process and a method for holding a core and terminals. A miniature surface-mount electronic component including a bar-shaped coreon which a winding wireis wound, and metal plateswith an outer casingmade of an insulating resin molded, includes flangessubstantially quadrangular in section at both ends of the bar-shaped coreand vertical grooves a and b are provided on side surfaces of the flangesof the bar-shaped coreas fixing portions for preventing positional displacement occurring when the outer casingis molded.

Miniature surface-mount electronic component and method for manufacturing the same

A triaxial antenna coil prevents wires from snapping, increases productivity, is resilient against dropping, and is suitable for being made small and light. A triaxial antenna coil includes coils, that are wound around three intersecting winding axes, and a flat core having winding grooves in three intersecting axial directions. A base has a terminal element, that is fitted with a plurality of external connectors and terminal connectors of windings. The base is fixed to one face of the core. The coils are wound in respective winding grooves, and their terminals are connected to the terminal connectors of the terminal element.

Growing community of inventors

Tsurugashima, Japan

Shin Murakami