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VEHICLE ANTENNA DEVICE and transmitting antenna device

An antenna device and technology for transmitting antennas, applied in the direction of antennas, coupling devices, antenna parts, etc., can solve the problem of not being able to obtain the required communication area

Inactive Publication Date: 2014-06-11
KK TOKAI RIKA DENKI SEISAKUSHO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In turn, there may be a situation where the required communication area cannot be obtained

Method used

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  • VEHICLE ANTENNA DEVICE and transmitting antenna device
  • VEHICLE ANTENNA DEVICE and transmitting antenna device
  • VEHICLE ANTENNA DEVICE and transmitting antenna device

Examples

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Embodiment Construction

[0024] Hereinafter, an electronic key system for a vehicle in which an antenna device for a vehicle is embodied in one embodiment will be described.

[0025] (vehicle)

[0026] Such as figure 1 As shown, a door lock device 12 is connected to an ECU (Electronic Control Unit) 11 of the vehicle. The door lock device 12 locks and unlocks the doors, respectively.

[0027] The ECU 11 is connected to a first transmitting antenna device 21 via a first transmitting circuit 20 , is connected to a second transmitting antenna device 23 via a second transmitting circuit 22 , and is connected to a receiving antenna device 25 via a receiving circuit 24 . As shown in FIG. 2( a ), the first transmitting antenna device 21 is mounted on the left front door handle 18 , and the second antenna device 23 is mounted on the right front door handle 19 . In addition, the configuration of the first and second antenna devices 21 and 23 will be described in detail later. The receiving circuit 24 and th...

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PUM

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Abstract

The present invention provides a vehicle antenna device. The vehicle antenna device includes first and second antenna units arranged on opposite sides of a vehicle. Each antenna unit includes an antenna body and a second terminal portion. The antenna body includes an antenna portion and a first terminal portion. The antenna portion includes at least two antenna coils each having an axis, and the two axes of the at least two antenna coils intersect each other. The first terminal portion includes first terminals each arranged on two ends of the at least two antenna coils. The second terminal portion is arranged on the vehicle and includes second terminals respectively connected to the first terminals. The second terminal portion of each antenna unit includes a wire-connecting structure, which series-connects the at least two antenna coils. The wire-connecting structures differ between the antenna units.

Description

technical field [0001] The present invention relates to a vehicle antenna device and a transmitting antenna device for transmitting wireless signals to a communication partner such as a portable device. Background technique [0002] Conventionally, there is known an electronic key system that controls a vehicle through wireless communication between a portable device carried by a user and the vehicle. In the electronic key system in Japanese Patent Laid-Open No. 2012-193571, when the portable device enters a communication area set around the vehicle, mutual wireless communication is automatically performed between the vehicle and the portable device. When the vehicle determines through the wireless communication that the communication partner is a legitimate mobile device, the vehicle door is allowed to be unlocked. [0003] More specifically, antennas for transmitting wireless signals are provided in the door handles on the driver's seat side and the door handles on the pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q25/02H01Q1/32H01Q1/50H01Q1/36H01R13/642
CPCH01Q1/3283H01Q1/3241
Inventor 中川干贵吉川文崇
Owner KK TOKAI RIKA DENKI SEISAKUSHO
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