JP2002359136A - Winding method of coil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a winding method of a coil which enables multilayer alignment winding, is suitable for miniaturization of a coil and hardly damages a coil. SOLUTION: In the winding method of a coil for winding an insulation electric wire 4 around a coil bobbin 3 provided with brim parts 2, 2 formed in a winding part 1 and both ends of the winding part 1, a slit 5 at an acute angle relative to a longitudinal central axis X of the coil bobbin 3 is formed at least in one of the brim parts 2, 2, a winding start side S of a coil is led into the winding part 1 from the slit 5, and the winding start side S of a coil is led out of the slit 5 to the coil outer circumferential direction by winding the insulation electric wire 4 around the winding part 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil winding method in which an insulated wire is wound around a coil bobbin having jaws formed at both ends of a winding portion, and more particularly, to a method of arranging a coil in a multilayer such as a bale stack. The present invention relates to a coil winding method suitable for use in a wound coil.

[0002]

2. Description of the Related Art Recently, various electronic devices have been provided with magnetic flux generating means, impedance means, or various sensor means.
Coil components such as relays are frequently used. These coil components are configured by winding a predetermined number of insulated wires around a coil bobbin made of an insulating resin, for example. Recently, there has been a demand for a reduction in the size of the coil, and a coil arranged and wound in multiple layers has been required. FIG. 2 shows a conventional example of such a coil. In the figure, 3A is a coil bobbin having a winding part 1 and jaws 2, 2 formed at both ends of the winding part 1, respectively. It is configured to be wound a predetermined number of times by a machine or the like. These coils are generally wound as follows. Although not shown in detail, an insulated wire 4 serving as a coil winding start side S is introduced from the winding bobbin located outside the coil bobbin 3A into the winding unit 1 by a winding nozzle, and a coil winding start side S portion is provided. Is temporarily fixed to the jaw 2 with an insulating tape or the like. Then, after winding the insulated wire 4 by a predetermined number while rotating the winding nozzle around the winding portion 1, the winding start side S and the winding end side F of the coil are placed outside the winding portion 1. A predetermined length is derived to form a coil. At this time, the winding start side S and the winding end side F of the coil may be in a state of being pulled out from the winding section 1;
It is desirable to connect to the terminal pins arranged in 2 and 2.

[0003]

By the way, in the above-mentioned coil, the winding start side S of the coil is wound from the winding bobbin to the winding portion 1.
Then, a part of the winding start side S portion of the coil is temporarily fixed to the jaw 2 with an insulating tape or the like, and then the insulated wire 4 is wound around the winding portion 1. Therefore, the insulated wire 4 is sequentially wound around the winding portion 1 while a part of the winding start side S of the coil is kept in close contact with the inside of the jaw 2. Therefore, in particular, in the winding of a coil that requires aligned winding over multiple layers, the aligned winding is disturbed, which is not preferable in appearance, and there is a problem that the coil is easily increased in size. In addition, there is a danger that the insulated wire 4 will come into contact with the winding start side S of the coil at the time of winding, thereby damaging the coil.

Accordingly, an object of the present invention has been made in view of such circumstances, and it is possible to arrange an array of windings in multiple layers, which is suitable for reducing the size of a coil, and also to make a winding of a coil which is difficult to damage the coil. It is to provide a method.

[0005]

SUMMARY OF THE INVENTION In a first aspect, the present invention relates to a winding part 1 and jaws 2, 2 formed at both ends of the winding part 1.
A method of winding a coil for winding an insulated wire 4 on a coil bobbin 3 comprising: a slit 5 having an acute angle with respect to a longitudinal center axis X of the coil bobbin 3 in at least one of the jaws 2; And the winding start side S of the coil is introduced into the winding part 1 from the slit 5 and the winding part 1
A winding start side S of the coil is led out from the slit 5 toward the outer periphery of the coil by winding the insulated wire 4. In the coil winding method according to the first aspect, since the insulated wire 4 is wound in a state where the winding start side S of the coil is housed in the slit 5, the winding start side S of the coil does not expand toward the winding portion 1 side. In addition, it is possible to obtain a coil that can be arranged in multiple layers and has a reduced size. In addition, there is no contact between the winding start side S of the coil and the insulated wire 4, and the coil is not damaged.

[0006] In a second aspect, the present invention relates to the slit 5
, Terminal pins 6, 6 for connecting the winding start side S and the winding end side F of the coil are arranged, and the winding start side S and the winding end side F of the coil are respectively connected to the terminal from the winding part 1 side. Pin 6,6
2. The method for winding a coil according to claim 1, further comprising: In the coil winding method according to the second aspect, the winding start side S and the winding end side F are connected to the terminal pins 6, 6 from the winding part 1 side, so that the coil can be downsized. Disconnection of the winding start side S and the winding end side F of the coil in a subsequent process or during wiring is prevented. Further, since the slit 5 is formed in an oblique direction, the coil is not directly touched from the jaw 2 side, and the coil is not damaged in a later process.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to an embodiment shown in the drawings. Note that the present invention is not limited by this.

FIG. 1 is an explanatory view showing a coil winding method according to the present invention. FIG. 1A is a plan view showing the configuration of a coil bobbin, and FIG.
(b) is a sectional view taken along the line YY showing a state of the coil wound on the coil bobbin of FIG. (a), and (c) is a plan view showing the completed coil. In the figure, 3 is a winding part 1 having an inner diameter of 10 to 20 mm.
And a thickness of 2 to 3 mm provided at both ends of the winding part 1 and an outer shape of 20 to 30 mm
A coil bobbin having a total length of 20 to 30 mm formed by molding a polybutylene terephthalate, a polyamide resin, a liquid crystal resin, a polyetherimide resin, or the like; A predetermined number of insulated wires 4 having a wire diameter of 0.1 to 0.3 mm are wound to form a coil. A slit 5 having an acute angle with respect to the central axis X in the longitudinal direction of the coil bobbin 3 is formed in at least one of the jaws 2, 2 with a width of 0.5 to 1.0 mm. Although not shown in detail, the coil bobbin 3 is configured such that terminal pins 6, 6 for connecting the winding start side S and the winding end side F of the coil are disposed near the slit 5 later. The winding start side S and the winding end side F of the coil are respectively connected to the terminal pins 6, 6 by solder connection or the like from the winding part 1 side. Needless to say, it is desirable to arrange the terminal pins 6, 6 on the jaws 2, 2 in advance.

According to the present invention, the coil is wound as follows. First, the wire diameter is set outside the coil bobbin 3.
From the winding bobbin on which the insulated wire 4 of 0.1 to 0.3 mm is wound, the winding start side S portion of the coil is introduced into the winding portion 1 through the slit 5 by the winding nozzle. At this time, since the slit 5 is inclined with respect to the central axis X of the coil bobbin 3, the insulated wire 4 can be introduced into the winding part 1 as it is by moving the winding nozzle linearly, and the coil winding workability is improved. Can be done. At this time, a part of the coil start side S portion of the coil is temporarily fixed to the jaw 2 with an insulating tape.

Next, the insulated wire 4 is wound around the winding portion 1 while rotating the winding nozzle around the coil bobbin 3 at a predetermined pitch by a required number of times, and a pin diameter of 0.5 to
The terminal pins 6,6 of 0.7mm and height 3-5mm are arranged, and the winding start side S and the winding end side F are wound around the terminal pins 6,6 from the outer periphery of the coil and soldered to form a coil. I do.

When the coil is wound in this manner, the coil can be wound in a state where the winding start side S is housed in the slit 5, and the winding start side S of the coil expands toward the winding portion 1. And reliable alignment winding is possible. As a result, the size of the coil can be reduced, and the winding start side S of the coil does not come into contact with the insulated wire during winding, so that the coil is not damaged. Further, since the slit 5 is inclined with respect to the central axis X of the coil bobbin 3, the coil is not damaged by directly touching the coil from the jaw 2 side.

[0012]

According to the present invention, the insulated wire can be introduced into the winding portion of the coil bobbin simply by moving the winding nozzle linearly, and the winding workability is greatly improved. Also,
Due to the slit provided obliquely with respect to the center axis of the coil bobbin, the coil winding start side does not swell toward the winding part side, and a coil that is securely aligned and wound can be obtained. Also,
Since the coil winding cannot be directly touched from the jaw side, the coil is not damaged. As a result, a coil having excellent reliability can be obtained. The practical effect is large.

[Brief description of the drawings]

FIGS. 1A and 1B are explanatory diagrams showing a coil winding method according to the present invention, wherein FIG. 1A is a plan view showing the configuration of a coil bobbin, and FIG. 1B is wound around the coil bobbin of FIG. FIG. 2C is a sectional view taken along line YY showing the state of the coil, and FIG. 2C is a plan view showing the completed coil.

FIG. 2 is an explanatory view showing a conventional method of winding a coil, and FIG. 2 (a) is a plan view showing the configuration of a coil bobbin;
(b) is a sectional view taken along line YY of the coil wound around the coil bobbin in (a) of FIG.

[Explanation of symbols]

 1 Winding part 2,2 Jaw 3,3A Coil bobbin 4 Insulated wire 5 Slit 6,6 Terminal pin S Coil winding start side F Coil winding end side X Coil bobbin center axis

Claims (2)

[Claims] An insulated wire (4) is provided on a coil bobbin (3) having a winding part (1) and jaws (2) formed at both ends of the winding part (1).
A slit 5 at an acute angle with respect to a longitudinal center axis X of the coil bobbin 3 is formed on at least one of the jaws 2, 2, and the coil is wound from the slit 5. Introducing the start side S to the winding portion 1, winding the insulated wire 4 around the winding portion 1, and leading the winding start side S of the coil from the slit 5 to the coil outer peripheral direction. Winding method. 2. In the vicinity of the slit 5, terminal pins 6, 6 for connecting a winding start side S and a winding end side F of the coil are provided.
2. The coil winding method according to claim 1, wherein the winding start side S and the winding end side F of the coil are respectively connected to the terminal pins 6, 6 from the winding part 1 side.