KR200336758Y1 - Solenoids that allow winding of coils without coil bobbins - Google Patents

Abstract

The present invention relates to a solenoid which enables coiling without coil bobbin. In the conventional conventional solenoid structure, the core is inserted into the inside and inserted into the housing bracket in which the coil bobbin wound around the coil is wound in a rectangular shape by injection molding in the form of a failure on the outside of the core insertion inner tube which is operated backward and forward, and the upper side is fixed. As the coil bobbin is manufactured separately by injection molding, it was a factor of increasing the cost, and the distance between the core and the coil is increased by the thickness of the bobbin so that the performance is relatively lowered and the bobbin is not installed. There was a shortcoming in that it was insufficient to be applied to a variety of devices, which are miniaturized due to the increase of the structure.

The present invention inserts an insulating tube made of a thin synthetic resin film on the outer circumference of the core insert inner tube body in which the core is inserted and moves forward and backwards, and winds the coil directly on the inner tube body with a pair of insulating washers spread up and down. Since the core and the core are as close as possible to improve the performance relative to the same capacity, the solenoid can be compactly configured to be easily applied to various electronic and electrical devices of the miniaturization trend.

Description

Solenoids that allow winding of coils without coil bobbins

The present invention relates to a solenoid capable of winding a coil without a coil bobbin. Specifically, a solenoid applied to various electronic, electrical devices, and automation devices, and the like does not need a bobbin that is separately formed by injection molding. By inserting an insulating tube made of a thin resin film and winding the coil directly, the solenoid performance can be improved while realizing a compact structure.

As is well known, solenoids applied to various electronics, electric devices, and automation devices are used to control the opening and closing devices of various devices by connecting the cores to the forward and backward operation, as the core is operated forward and backward according to the principle of electromagnet. In the conventional conventional solenoid structure, as shown in FIG. 3, the core 12 is inserted into the inner side and the injection molding of the coil C is performed on the outer side of the core insertion inner body 13 which is operated backward and forward in a failure form. In the conventional solenoid, the coiled bobbin B was fitted by fitting to the support tube 14 in the housing bracket 11 bent at a rectangular angle and fastened to the upper side by the bracket cover plate 15. Since the coil bobbin (B) is manufactured by injection molding, the mold value becomes expensive, which contributes to the cost increase of the finished product. The distance between the core 12 and the coil C is increased by the thickness of the resin resin, which not only decreases the performance, but also makes it suitable for various devices that are becoming smaller in size due to the bobbin mounting structure. There was a shortcoming.

The present invention was devised to solve the above-mentioned drawbacks, and the coil can be wound without the need for a coil bobbin. By coiling the coil directly on the inner tube body with the tube inserted and a pair of insulating washers spreading up and down, the solenoid can be compactly constructed because the coil and the core are as close as possible to improve performance relative to the same capacity. It is intended to be easily applied to various electronic and electrical devices of the miniaturization trend.

1-exploded perspective view of a solenoid according to the present invention

2-sectional drawing of the solenoid according to the present invention

3-Assembly cross-sectional view of a conventional solenoid

<Explanation of symbols for the main parts of the drawings>

1-Housing bracket 3-Core insert 4-Support tube

5-Bracket cover plate 6-Insulation tube 7a, 7ｂ-Insulation washer

8a, 8ｂ-Flange

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The support tube 4 for inserting and supporting the lower part of the core 2 and the core inserting inner tube 3 is fixed to the inside of the housing bracket 1 in which one side is opened in the form of "dish" by press working. In the support tube (4), the core insertion inner tube (3) into which the coil is wound is inserted, and the upper side is covered with the bracket cover plate (5). 3) An insulating tube 6 made of a thin synthetic resin film is inserted into the outer circumference of the tube, and a pair of insulating washers 7a (7 () made of an insulating material such as synthetic resin and a bracket cover plate 5 are spaced on the tube. The upper and lower ends of the core insert inner tube 3 are bent outward to form the flange portions 8a, 8ｂ so as to be inserted in the state and to prevent their separation. Then, the insulated washers 7a, 7ｂ are fitted. ) Core is inserted into the insulating tube (6) The tube after winding the coil (C) to phase (3) is configured by fastening the wound outer coil in a conventional manner with an insulating tape.

The present invention as described above, since the coil (C) is directly wound on the core insertion inner tube (3), the distance between the coil and the core (C) which is inserted backwards and operated back and forth depending on the power is as close as possible When the winding amount is the same as when wound in the conventional bobbin is relatively strong because it is possible to manufacture a solenoid with a more compact structure at the same capacity.

The present invention as described above improves the performance of the solenoid while realizing a compact structure by inserting an insulating tube made of a thin synthetic resin film into the core insertion tube body and winding the coil directly without the need of a coil bobbin fitted to the core insertion tube body. It can be easily applied to various electronic and electrical equipment that is becoming a miniaturized trend, and the manufacturing cost is reduced by eliminating the bobbin by the injection mold, thereby providing a compact solenoid with improved performance at a low cost.

Claims (1)

In the inner support tube 4 of the "dimple" shaped housing bracket 1, the core insertion inner tube 3 in which the coil C is wound is inserted and installed, and the upper side is covered with the bracket cover plate 5 in a normal manner. In the solenoid, an insulating tube (6) made of a thin synthetic resin film is inserted into the outer circumference of the core insertion inner tube (3), and a pair of insulating washers (7a) (7ｂ) and a bracket cover plate (5) are inserted therein. And the flanges 8a (8ｂ) are formed at the upper and lower ends so that the separation is prevented, and they are spread upward and downward to spread the coils on the core insert inner tube 3 into which the insulating tube 6 is fitted. A solenoid that allows winding of a coil without a coil bobbin, which is configured by winding C) directly.