Microminiature retardation coil and manufacture method thereof
A technology of choke coils and manufacturing methods, which is applied in the direction of inductance/transformer/magnet manufacturing, transformer/inductor coils/windings/connections, electrical components, etc., and can solve the problem that choke coils cannot be miniaturized, cost increased, and volume cannot be miniaturized. Small and other issues
Active Publication Date: 2012-05-02
INPAQ TECH
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Problems solved by technology
The most important thing is this method of using natural filling and pressing, such as figure 1 As shown, the ferromagnetic material 2 formed outside the coil body 1 through the lamination process will have obvious isolation from the coil body 1 and cannot be completely sealed, so that its overall volume cannot be miniaturized.
Moreover, it is easy to cause damage to the coil body during the pressing process, so the pressed molded product is likely to affect the inaccuracy of the inductance value due to the overall unevenness caused by the damaged coil
[0005] In addition, the above-mentioned existing choke coil is obtained by filling the ferromagnetic material in the mold and then forming it by mechanical high-pressure molding, so the ferromagnetic material coated outside the coil body will be more than actually required This is not only the reason why the existing choke coil cannot be miniaturized, but also causes the cost increase caused by the extra ferromagnetic material of the choke coil
Method used
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Embodiment Construction
[0029] Specific embodiments of the present invention are described below in conjunction with accompanying drawing:
[0030] The miniature choke coil of the present invention, its manufacture step comprises:
[0031] 1. Select the enameled wire 3 (insulation material 30 such as polymer coated on the outside of the metal wire) as the body of the coil material (such as figure 2 shown);
[0032] 2. The enameled wire 3 coated with the film of insulating material 30 such as polymer on the outside of the metal wire is made into a horizontal spiral coil 4 through a winding machine. The helix of the spiral coil is very dense, preferably round (such as image 3 shown);
[0033] 3. Utilize thin-film processes such as sputtering (sputtering) to attach fine powders of ferromagnetic materials (such as iron, cobalt, nickel, etc.) to the wire surface of the helical coil 4, and form a layer of thickness greater than 1 Angstrom (10 -10 m) ferromagnetic thin film base layer 5 (such as Figu...
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Abstract
The invention discloses a microminiature retardation coil and a manufacture method thereof. The manufacture method comprises the following steps: firstly, preparing a lacquered wire or a wire coated with an insulating film; secondly, winding the lacquered wire or the wire coated with the insulating film into a spiral coil; thirdly, coating a layer of ferromagnetic material with the thickness more than 1 tenthmeter (10 <-10>m) as a substrate on the surface of the spiral coil by process procedures such as sputtering; and finally, coating proper amount of the ferromagnetic material on the coil surface which have been coated with the ferromagnetic material and between coils through process procedures such as electroplating technology, crystal growing technology or chemical vapor deposition to obtain the microminiature retardation coil of which the shape is blocky.
Description
technical field [0001] The present invention relates to a micro-sized choke coil, in particular to a surface of a helical coil wound with a conductive wire covered with an insulating film, and the ferromagnetic material is first made of a thin film process, crystal growth technology or other chemical processes. The film type is attached to the surface of the coil, and then attached and filled in an appropriate amount outside the coil covered with a magnetic thin layer, so that the choke coil can be a miniature choke coil. Background technique [0002] Generally, the choke coils sold on the market are mainly formed by coils wound on a magnetic cylinder, but the magnetic cylinder with a mechanical structure is too large to meet the needs of electronic products that are increasingly thinner and smaller. Therefore, That is to say, some relevant industry researches on this, hoping to obtain a choke coil that is more suitable for the needs of current electronic products. [0003]...
Claims
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IPC IPC(8): H01F27/28H01F27/29H01F17/00H01F37/00H01F41/02
Inventor 苏圣富
Owner INPAQ TECH