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Three-dimensional low-frequency antenna coil

An antenna coil and low-frequency technology, applied in coils, loop antennas with ferromagnetic material cores, magnetic cores/yokes, etc., can solve problems such as high processing technology requirements, complex magnetic core structures, and high product defect rates, and achieve The effect of reducing production cost, reducing volume and simple structure

Inactive Publication Date: 2010-01-27
嵊州市兰花电器科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of magnetic core has a complex structure, high requirements for processing technology, and high product defect rate, which makes the manufacturing cost higher

Method used

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  • Three-dimensional low-frequency antenna coil
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Embodiment Construction

[0029] In order to further illustrate the technical means adopted by the present invention and its effects, the following describes in detail in conjunction with preferred embodiments of the present invention and accompanying drawings.

[0030] Such as Figure 1-5 As shown, the three-dimensional low-frequency antenna coil of the present invention includes a base 2 and a magnet 4 set in the base. The base 2 includes a body 22, a first coil 24 wound on the side of the body 22, and several coils mounted on the body 22. Metal terminal 26. The main body 22 includes a bottom plate 221, a frame body 222, and 222 connecting columns 223 connecting the bottom plate and the frame body. The frame body 222 includes four sequentially connected frame parts 2222, and one of the frame parts has an opening 2224. 222 , the bottom plate 221 and four connecting posts 223 form a receiving groove 224 at the center of the body 22 ; A first winding slot 225 surrounding the outer surface of the conne...

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PUM

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Abstract

The invention relates to a three-dimensional low-frequency antenna coil which comprises a base and a magnetic body sleeved in the base, wherein the base comprises a body, a first coil wound at the lateral surface of the body and a plurality of metal terminals arranged on the body; the magnetic body comprises a magnetic core, a second coil and a third coil which are wound on the magnetic core; and the first coil, the second coil and the third coil are orthogonally vertical relatively to the central position of the magnetic core and respectively connected with the metal terminals. The invention realizes the three-dimensional integration by the combination of the independent magnetic core and the base, and the independent magnetic core and the base are simple in structure and easy to manufacture and can effectively reduce the production cost; in addition, and the magnetic core is made of materials with high magnetic conductivity and can effective reduce the volume of the coils, thereby being good for the miniaturization of the coils.

Description

technical field [0001] The invention relates to an antenna coil, in particular to a miniaturized three-dimensional low-frequency antenna coil. Background technique [0002] Antenna coils are currently widely used in Passive Keyless Entry and Passive Keyless Start systems (PEPS for short) and similar devices in automobiles, and are also gradually used in home security, smart door opening, and hotel buildings. And other trends in the fields of intelligent access control management. Antenna coils can be divided into receiving antenna coils and transmitting antenna coils according to their functions and functions. The receiving signal effect of the receiving antenna coil depends on the relationship between the direction of the magnetic field used for the receiving antenna coil and the transmitting antenna coil. In detail, when the receiving antenna coil is parallel to the direction of the magnetic field generated by the transmitting antenna coil, the receiving antenna has the b...

Claims

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Application Information

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IPC IPC(8): H01Q7/06
CPCH01F3/00H01F2003/005H01F5/02H01F2005/027
Inventor 施学林
Owner 嵊州市兰花电器科技有限公司
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