Denso Corporation

Nippondenso Co., Ltd.

Terutaka Maruyama

Mitsuru Nakagawa

Takashi Harada

Akihiro Sasaki

Seiji Kawai

Hiroyuki Hirata

A wireless transceiver for a keyless entry system of an automotive vehicle includes: a circuit board having a circuit part disposed thereon; and a resin mold for molding the circuit board. The resin mold molds both of the circuit board and the circuit part, and the resin mold has a card shape. The resin mold has no connection portion of a casing so that the transceiver has high water resistance and high impact resistance.

Wireless transceiver for automotive vehicle

Data formulated according to a user's request signal is transmitted from a transmitter device to a receiver device under a wireless or a wired system. The transmitter device includes a transmission controller that formulates the data to be transmitted and memorizes the request signal as a backup signal. If the data transmission is not completed due to a power source trouble such as a voltage drop, the data to be transmitted is automatically formulated again based on the backup signal and sent out to the receiver. If the data transmission is successful, the backup signal is eliminated from a memory. Thus, the data requested by the user is transmitted without fail even if the transmitter becomes temporarily inoperative.

Transmitter device having means for automatically transmitting data remaining therein upon its re-activation

Of an IC card, an IC is mounted on a surface of a circuit board (FPC) including a hard plate member that is attached on the other surface of the circuit board. Both surfaces of the circuit board having the IC and plate member are covered by a hard material member of electric insulating. Therefore, stress load applied to the IC can be restricted. Further, the circuit board along with the hard material member is divided into multiple portions that are connected using a flexible electric wiring. This can provide sufficient flexibility to the IC card, resulting in enhancement of a preventive effect in breakage or damage of the IC card.

IC card

An electromagnetic relay is composed of a coil wound around magnetic core, a U-shaped magnetic pole member connected to an end of the magnetic core and provides a space, a yoke member connected to the other end of the magnetic core, an armature movably connected to the yoke and disposed in the space, a permanent magnet secured to the armature near the magnetic core and supporting member supporting the armature. Since the permanent magnet is disposed near the magnetic core, magnetic flux of the permanent magnet can be utilized effectively and, therefore, the size of the relay can be reduced.

Growing community of inventors

Toyota, Japan

Terutaka Maruyama