JP2000134694A - Coil and manufacture thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the fixing strength of a coil, a leader line and a bobbin by winding a wire at one end of the bobbin, providing a gold thread line, electrically connecting the gold thread line and the wire by the leader line extended from the wire and fixing the leader line and the bobbin at least by an ultraviolet ray curing adhesive material. SOLUTION: The wire 23 composed by winding one end side is provided on the outer peripheral surface of the bobbin 21 composed of paper, aramid mica or polyimide resin or the like of an insulation material which is a non- magnetic material provided with a hollow hole 22 and the wire 23 is composed by coating a conductor composed of copper, aluminum or the alloy material with a self-fusing type insulation material such as resin. The leader line 24 is provided from the part at the winding end of the wire 23 to the other end of the bobbin 21. The leader line 24 is provided by peeling off the self-fusing type insulation material from the wire 23. The leader line 24 is electrically connected with the tinsel line 25 at one end of the bobbin 21. Then, at least the leader line 24 is fixed to the outer peripheral surface of the bobbin 21 by the ultraviolet ray curing adhesive material 26.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil used for a voice coil and the like used in various audio equipment and a method for manufacturing the same.

[0002]

2. Description of the Related Art A conventional method for manufacturing a coil will be described below with reference to the drawings.

FIGS. 6 and 7 are views for explaining a conventional coil manufacturing method. First, as shown in FIG. 6, a wire 3 is wound around one end of an outer peripheral surface of a bobbin 2 having a hollow hole 1, and a lead wire 4 extending from the wire 3 and a gold wire 5 fixed to the other end of the bobbin 2. And are electrically connected.

Next, as shown in FIG. 7, a holding jig 11 is inserted and fixed in the hollow hole 1 of the bobbin 2 with the lead wire 4 as an upper surface. Then, the fixed paper 1 wound around the fixed paper supply unit 12
3 is cut into a predetermined size, the fixed paper 13 is sucked by the chuck block 14, and the bobbin 2 is
And is attached to a predetermined portion of the lead wire 4 and fixed to the bobbin 2.

[0005]

Here, in order to fix the lead wire 4 to the bobbin 2, if the fixing paper 13 is cut with high accuracy and is not accurately adhered, the fixing paper 13 is peeled off from the bobbin 2. Had issues.

An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide a coil having excellent strength for fixing a coil lead wire to a bobbin, and a method of manufacturing the same.

[0007]

In order to achieve the above object, the present invention provides a method for applying an ultraviolet-curing adhesive to a lead wire of a wire exposed on a bobbin formed by winding the wire, and irradiating the wire with ultraviolet light. The ultraviolet curable adhesive is cured to fix the bobbin and the lead wire. With this configuration and manufacturing method, it is possible to reduce the complicated steps of cutting and attaching the conventional fixed paper.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION
A wire is wound around one end of a bobbin, a gold wire is provided at the other end, and the gold wire and the wire are electrically connected by a lead extending from the wire, and the lead and the bobbin are connected to each other. At least one that is fixed with an ultraviolet-curable adhesive and has excellent fixing strength between the lead wire and the bobbin can be provided.

According to a second aspect of the present invention, an ultraviolet-curable adhesive is applied to the lead wire of the wire exposed on the bobbin formed by winding the wire, and the ultraviolet-ray is radiated to irradiate the ultraviolet-curable adhesive. It is obtained by curing the agent and fixing the bobbin and the lead wire, and has an effect of reducing a complicated process of cutting and attaching a conventional fixing paper.

According to a third aspect of the present invention, there is provided a bobbin formed by winding a wire at one end and providing a gold wire at the other end, and electrically connecting the gold wire to a lead extending from the wire. Is attached to the holding jig provided in the rotation drive mechanism,
After discharging the ultraviolet curable adhesive toward the lead line using a nozzle tapered from above the lead line, the lead line and the bobbin are irradiated with ultraviolet rays, and the ultraviolet curable adhesive is cured to form the lead line and the bobbin. The adhesive is fixed, and has an effect that the ultraviolet curable adhesive can be discharged accurately toward the lead wire.

According to a fourth aspect of the present invention, a wire is wound at one end and two gold wires are provided at the other end, and the gold wire and the lead wire extending from the wire are electrically connected. Is mounted on a holding jig provided in a rotary drive mechanism, and is bonded by ultraviolet curing using a diffusion type nozzle from above the lead line so as to have a predetermined width including the two lead lines. After the agent is discharged, ultraviolet rays are irradiated, and the ultraviolet curable adhesive is cured to fix the lead wire and the bobbin. Have

The invention described in claim 5 is the third invention.
Alternatively, the nozzle described in 4 is moved by a traverse mechanism interlocked with a rotation shaft provided in a holding jig connected to a rotation drive mechanism, and has an effect that the movement amount of the nozzle can be appropriately adjusted.

Hereinafter, a coil according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of a coil according to an embodiment of the present invention, and FIG. 2 is a top view of the coil.

In FIG. 1, reference numeral 21 denotes a non-magnetic bobbin having a hollow hole 22 and made of insulating paper, aramid mica, polyimide resin or the like. On the outer peripheral surface of the bobbin 21, there is provided a wire 23 wound on one end side. The wire 23 is made of a conductor made of copper, aluminum, or an alloy thereof, and a self-fusing insulating material such as a resin. It is coated. A lead wire 24 is provided from the end of the winding of the wire 23 toward the other end of the bobbin 21. The lead wire 24 is provided by peeling the self-fusing insulating material from the wire 23. The lead wire 24 is connected to the bobbin 2
One end is electrically connected to the gold wire 25. Further, at least this lead wire 24 is, as shown in FIG.
It is fixed to the outer peripheral surface of the bobbin 21 by the ultraviolet thermosetting adhesive 26.

Regarding the coil configured as described above,
Hereinafter, the manufacturing method will be described with reference to the drawings.

FIG. 3 is a diagram illustrating a method of manufacturing a coil according to an embodiment of the present invention. First, the hollow hole 22 (not shown in this drawing) of the bobbin 21 is set with the surface having the lead wire 24 of the bobbin 21 wound with the wire 23 facing upward.
It is inserted and fixed in a holding jig 32 provided in the rotation drive mechanism 31. The holding jig 32 provided in the rotation drive mechanism 31 has a rotation shaft 33 that rotates by the rotation force of the rotation drive mechanism 31.

Next, a nozzle 41 is arranged above the lead wire 24 of the bobbin 21. The nozzle 41 includes a drive shaft 43 connected to a traverse drive mechanism 42,
4 are provided.

Next, the ultraviolet curable adhesive 26 quantitatively calculated by the liquid quantitative discharger 44 is discharged from the tip of the tapered nozzle 41 toward at least the lead line 24. At this time, the nozzle 41 moves the upper side of the lead wire 24 from one end to the other end of the bobbin 21 in conjunction with the operation of the rotation shaft 33 of the rotation drive mechanism 31 and the traverse operation of the traverse drive mechanism 42 so that the ultraviolet curable adhesive 26 While discharging.

Finally, while holding the bobbin 21 coated with the ultraviolet curable adhesive 26 on the holding jig 32 as it is, ultraviolet rays are bonded from the ultraviolet generating mechanism (not shown in this figure) by ultraviolet curable bonding. Irradiate toward the agent 26 to cure the ultraviolet-curable adhesive 26, and lead the lead 24 to the bobbin 21.
To be fixed.

In this embodiment, the ultraviolet curable adhesive 26 is discharged from the tip of the tapered nozzle 41 toward the lead wire 24. However, as shown in FIG.
5, an ultraviolet curable adhesive 26 having a predetermined width including the two lead lines 24 is applied, as shown in FIG.
The lead wire 24 may be fixed to the bobbin 21 by curing.

[0022]

As described above, according to the present invention, the gold wire and the lead extending from the wire are fixed to the bobbin with an ultraviolet curable adhesive, whereby the bond strength between the lead and the bobbin is improved. This has an effect that a coil can be provided.

[0023] Further, by adopting a manufacturing method in which an ultraviolet curable adhesive is discharged to the lead wire and irradiated with ultraviolet rays to fix the bobbin and the lead wire, the conventional fixing paper is cut and adhered. The number of steps can be reduced, and a method of manufacturing a coil with improved productivity can be provided.

Further, by discharging the ultraviolet curable adhesive toward the lead line using a tapered nozzle, the ultraviolet curable adhesive can be discharged accurately toward the lead line, thereby further improving productivity. The effect of being able to provide a method for manufacturing a coil as described above is achieved.

Further, the ultraviolet curable adhesive is discharged from above the lead lines using a diffusion type nozzle so as to have a predetermined width including two lead lines, so that the ultraviolet curable adhesive can be discharged. Since there is a margin, it is possible to provide a coil manufacturing method with further improved productivity.

Further, since the nozzle is moved by a traverse mechanism interlocked with a rotation shaft provided in a holding jig connected to the rotation driving mechanism, the amount of movement of the nozzle can be appropriately adjusted, thereby further improving productivity. The effect of being able to provide a method for manufacturing a coil as described above is achieved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a coil according to an embodiment of the present invention.

FIG. 2 is a top view of the same.

FIG. 3 is a perspective view illustrating the manufacturing method.

FIG. 4 is a perspective view illustrating a method of manufacturing a coil according to another embodiment of the present invention.

FIG. 5 is a top view of the same.

FIG. 6 is a perspective view illustrating a conventional coil manufacturing method.

FIG. 7 is a perspective view illustrating the manufacturing method.

[Explanation of symbols]

 Reference Signs List 21 bobbin 23 wire 24 lead wire 25 gold wire 31 rotation drive mechanism 32 holding jig 33 rotation shaft 41, 51 nozzle 42 traverse drive mechanism

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Nobutaka Hayashi 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. F term (reference) 5D012 BA06 BC02 CA03 CA14 EA01 FA04 JA01

Claims (5)

[Claims] 1. A wire rod is wound around one end of a bobbin, a gold wire is provided at the other end, and the gold wire and the wire are electrically connected by a lead extending from the wire. And a bobbin fixed to the bobbin with at least an ultraviolet curable adhesive. 2. An ultraviolet curable adhesive is discharged to a lead wire of the wire exposed on the bobbin formed by winding the wire, and the ultraviolet curable adhesive is irradiated with ultraviolet light to cure the ultraviolet curable adhesive, and the bobbin and A method for manufacturing a coil having a lead wire fixed thereto. 3. A bobbin provided on a rotary drive mechanism, wherein a bobbin formed by winding a wire at one end and providing a gold wire at the other end and electrically connecting the gold wire and a lead extending from the wire is provided. Attached to a jig, after discharging an ultraviolet curable adhesive toward the lead using a nozzle tapered from above the lead, the ultraviolet curable adhesive is cured by irradiating ultraviolet rays. A method for manufacturing a coil in which a lead wire and a bobbin are fixed. 4. A bobbin formed by winding a wire at one end and providing two gold wire wires at the other end and electrically connecting the gold wire and a lead wire extending from the wire material is provided in a rotary drive mechanism. After being mounted on the holding jig and discharging a UV-curable adhesive from above the leader lines using a diffusion type nozzle so as to have a predetermined width including the two leader lines, irradiation with ultraviolet rays is performed. Then, the ultraviolet curable adhesive is cured to fix the lead wire and the bobbin. 5. The method for manufacturing a coil according to claim 3, wherein the nozzle is moved by a traverse mechanism interlocked with a rotation shaft provided in a holding jig connected to the rotation drive mechanism.