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Vehiclar antenna device, antenna system and communication system using the same for vehicle

An antenna device and vehicle technology, applied in the field of vehicle antenna system, communication system, and vehicle antenna device, capable of solving problems such as change in orientation

Inactive Publication Date: 2004-10-13
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] However, in the above-mentioned conventional vehicle antenna device 15 and the communication system using the device, when the driver of the vehicle folds the movable part 17 provided with the reflector, since the built-in movable part 17 The direction of the antenna device 15 for the vehicle in the vehicle changes, and the directivity changes, so there is a problem that the driver of the vehicle cannot reliably perform remote control within a predetermined range with the vehicle.

Method used

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  • Vehiclar antenna device, antenna system and communication system using the same for vehicle
  • Vehiclar antenna device, antenna system and communication system using the same for vehicle
  • Vehiclar antenna device, antenna system and communication system using the same for vehicle

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Embodiment approach 1

[0036] figure 1 It is a perspective view of main parts of the vehicle antenna device according to Embodiment 1 of the present invention. exist figure 1 Among them, the magnetic core part 21 is formed of a magnetic material such as ferrite, and the holding part 22 is made of a film-like sheet made of a dielectric such as polyethylene terephthalate. The holding part 22 is closely attached to the magnetic core part 21 and Wind 1 turn or more.

[0037] In addition, the coil 23 is formed by winding a linear conductor on the outside of the holding portion 22 .

[0038] In addition, the thickness of the holding portion 22 is desirably a thickness of 0.025 to 0.05 mm which is easy to obtain and easy to be wound on the core portion 21 .

[0039] In addition, since the thinner the thickness of the holding part 22, the tightness between the coil 23 and the magnetic core part 21 will be improved, so that the magnetic permeability can be formed larger, and the coil 23 of the linear co...

Embodiment approach 2

[0071] Figure 5 is a conceptual diagram of the antenna system according to Embodiment 2 of the present invention, in Figure 5 Among them, the vehicle antenna device 35 communicates with the outside by sending electromagnetic waves, and the fixed part 16 is used to install the vehicle mirror (hereinafter referred to as the mirror) near the door of the driver's seat side and the passenger seat side of the vehicle. , Formed with a resin made of a dielectric such as polyethylene terephthalate.

[0072] Furthermore, the vehicle antenna system 20 can be configured by incorporating the vehicle antenna device 35 in the fixed portion 16 and combining the fixed portion 16 and the vehicle antenna device 35 .

[0073] In addition, the inherent card 19 of the vehicle communicates with the vehicle antenna system 20, and the card 19, the vehicle antenna system 20, and a control circuit (not shown) connected to the vehicle antenna system 20 are combined to form a communication system. . ...

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Abstract

An antenna device (35) for installation on vehicles, which antenna device including a core (21) made of a magnetic material, a holding portion (22) provided by a dielectric film sheet wound around the core, a coil (23) formed with a linear conductor wound around the holding portion, a case (24) made of a dielectric resin material for housing the core, the holding portion and the coil, and a flexible dielectric resin (32) filling the space within the case excluding the core, the holding portion and the coil.

Description

technical field [0001] The present invention relates to a vehicle antenna device used in a keyless entry system for locking and unlocking a vehicle by remote control, a vehicle antenna system and a communication system using the same. Background technique [0002] In recent years, with the popularization of keyless entry systems for locking and unlocking vehicles, vehicles of various designs have been increasing, and small vehicle antenna devices that can be easily attached to these vehicles have been demanded. [0003] use Figure 7 and Figure 8 , such a conventional vehicle antenna device will be described. [0004] Figure 7 is a perspective view of main parts of a conventional vehicle antenna device, in Figure 7 Among them, the magnetic core part 1 is made of ferrite, and the holding part of the hollow bobbin 2 is made of dielectric resin. The coil 3 is formed by winding a linear conductor outside the bobbin 2, and the magnetic core part 1 is inserted inside the bobbi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R1/12B60R25/24H01Q1/32H01Q7/08
CPCH01Q1/3241H01Q1/3266B60R25/24B60R2001/1261H01Q7/08
Inventor 大原正广宫岛明雄前田勉井上雄文
Owner PANASONIC CORP