Mitsumi Electric Company Ltd.

Ngb Corporation

Hideo Yajima

Toshikazu Ogino

Hayato Shibano

Akio Takizawa

Junichi Noro

Shinya Yamada

Ryoji Yamamoto

Eiki Hosaka

Antenna

Data transmitter

An attaching mechanism for a GPS antenna is disclosed. The attaching mechanism comprises a clip for gripping a plate-shaped member and having a shaft supporting member, a shaft in which one end thereof is supported by the shaft supporting member, and a base member fixed to the other end of the shaft and on which a GPS antenna is mounted.

Attaching mechanism for GPS antenna

An assembly structure having a plurality of shield casings which are polygonal and substantially equal in cross section. The shield casings are stacked in a direction of their height. A shield cover is interposed between the shield casings. The shield cover is made up of a flat plate that covers the bottom surface of a first shield casing, the top surface of a second shield casing, and retaining springs that extend upward and downward from the outer edges of the flat plate. The retaining springs press against the walls of the first and second shield casings.

Assembly structure of a plurality of shield casings

A PCMCIA (Personal Computer Memory Card International Association) expansion PC (Personal Computer) card arranged to be inserted into a PC card slot formed in a portable personal computer as, for example, a radio having an FM teletext broadcast receiving function is disclosed. The PC card is composed of a plate-like card portion arranged to be inserted into the PC card slot and a cover box portion having a thickness larger than that of the card portion. The card portion and the cover box portion are formed individually from each other and separably connected to each other. The card portion has a top cover and a bottom cover having extension portions arranged to be inserted into an insertion opening of the cover box portion, respectively. An internal connector is mounted on a circuit board included in the cover portion to connect with an included connector mounted on a circuit board which is accommodated in the cover box portion.

PC card

A plane antenna includes a resin casing including a bottom cover, and a top cover covering the upper surface of the bottom cover; and an antenna element 1a and circuit elements concerning thereto which are set in the resin casing. In the plane antenna, the bottom cover is formed by using a material which is prepared by mixing aluminum powder with molding resin.

Plane antenna having metal/resin bottom cover

A navigation system comprises: an antenna 12 which receives radio waves from a GPS satellite; a controller 15 which perform various operations to detect the present position of the car from the output signal of the antenna 12; and an image display 17 which, being controlled by the controller, displays a map, the present position of the car, etc., and a traveling-direction indicator 30 which includes a sign section made up of arrow marks or triangular marks to indicate a direction in which the car should move on. With the system, as the car comes near a branching guide point such as a crossing, the controller 15 operates to cause the sign section of the traveling-section indicator 30 to turn on or flicker to indicate a direction in which the car should move one.

Navigation system

An antenna unit for use in a navigation system includes a bottom cover and a unit case, a circuit board and an antenna main body are stored in the bottom cover, a cylindrical storage portion in the bottom cover is for storing the circuit board and the antenna main body therein, the cylindrical storage portion being formed integrally with the surface of the bottom cover, a cylindrical joint portion being threaded with the cylindrical storage portion, said cylindrical joint portion being formed integrally in the unit case, and the cylindrical joint portion being threaded with the cylindrical storage portion.

Antenna unit for use in navigation system

A hermetically sealed case, has a space between a top case and a bottom case which can be completely sealed by means of a waterproof packing, and in which an area around a connecting cable is completely sealed. A first case having an annular projection formed at the periphery thereof is assembled to a second case having an annular groove having a shape corresponding to that of the projection of the first case formed at the periphery of the second case. An elastic member is provided between the projection of said first case and the groove of said second case. The width of said projection is smaller than the width of said groove, and said projection is fitted within said groove in a transverse direction. The elastic member deflects toward the groove, that is, deflects such that the ends of the elastic member are drawn toward the projection. Line contact is established between the corners of the projection and the elastic member, and also between the corners of the groove and the elastic member. A through hole through which the connecting cable is led is provided in one of the cases. The elastic member is pressed by a press-fitting member, and is press-fit between the through hole and the connecting cable. Sealing of the pair of cases and sealing of the area around the connecting cable performed independently of each other.

Hermetically sealed case sealed by packing

An antenna unit for a car navigation device includes a unit casing accommodating a circuit board and an antenna body and having a bottom cover in which a bottom recess is formed. A permanent magnet ring magnetically held on a back yoke is fixedly set in the bottom recess, the permanent magnet ring being used to magnetically hold the bottom cover on the surface of an object so that the antenna unit is detachably mounted on the object. In the antenna unit, an adhesive seal is bonded to the of the permanent magnet ring which surface confronts the surface of the object.

Antenna unit for a car navigation device

There is provided a flat antenna apparatus in which a low-noise amplifier provided therein does not generate an abnormal oscillation, and a case and a ground pattern formed on a circuit board are reliably connected to each other by means of a simple construction. A flat antenna element is mounted on a circuit board. The circuit board has an amplifying circuit for amplifying a radio frequency received from the flat antenna element. A case and the flat antenna element are attached to opposite sides of the circuit board. A tab formed on a peripheral edge of the case is inserted into a slot formed on the circuit board, the tab being soldered to fix the case on the circuit board.

Growing community of inventors

Kanagawa, Japan

Hideo Yajima