JPH10341549A - Coil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coil consisting of a large number of turns of a conductor which is wound into a spiral and whose starting line side is drawn out from the outer circumference of the coil very easily and, further, at a low cost. SOLUTION: The main line 1H side of a conductor with weldability is wound in one direction while a proper length of its starting line 1S side is left unwound beforehand to form a coil part 1. Then the starting line 1S side of the conductor is welded to the coil part 1 side while it is wound in a direction opposite to the winding direction of the main line 1H side. The respective terminals 1A and 1B of the main line 1H side and the starting line 1S side are drawn out from the outer circumference of the coil 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 used for a motor, various instruments, a generator, and the like, and more particularly, to a structure of winding a coil.

[0002]

2. Description of the Related Art As shown in FIG. 4, a conventional coil C, which is formed by stacking a plurality of conductive wires (electric wires) having a fusible property and spirally winding the conductive wires around a spindle (axis). To form a winding from the core side,
The terminal (end) CA on the main line side is pulled out from the outer peripheral surface of the coil C wound in multiple layers, and the terminal CB on the start line, which is the start of the winding, is on the inner end side of the coil C. Since the coil C is pulled out from the side surface and comes out from the side surface of the coil C by the thickness of the conducting wire, the coil C is turned sideways as shown in a sectional view of FIG. ), The terminal CB side of the start line must be pulled out along with the bottom surface of the coil C, that is, one side surface. The coil C cannot be set in a horizontal state, and as a result, there is a problem that a gap is formed between the coil C and the iron core.

Further, since pressure is applied to the terminal CB of the start line which is placed on the bottom surface (one side surface) of the coil C, an electrical abnormality may occur due to the pressure resistance. When C is used in a case where the thickness is barely limited, it is necessary to perform a work for accommodating the terminal CB of the start line on the substrate portion, which causes an increase in manufacturing cost.

Therefore, for example, as shown in FIG.
Two left and right coil bodies C1 and C2 whose winding directions are reversed are formed on both left and right sides of T, and these two coil bodies C1 and C2 are formed.
As shown in FIG. 7, a coil C 'having a structure in which both ends CA, CA of the conductive wire are drawn out from the outer peripheral surface by forming the start and the start from both and overlapping and integrally fusing CX as shown in FIG. Was.

[0005]

The coil C 'formed by the method shown in FIGS. 6 and 7 has two terminals CA, CA.
Is drawn out from the outer peripheral surface of the coil C ′,
Unlike the conventional coil C shown in FIGS. 4 and 5, it is not necessary to extend the terminal CB on the start line side to the bottom surface or one side surface, and a gap is provided horizontally even in a narrow case body. However, when the left and right coil bodies C1 and C2 are joined and fused CX integrally, a portion of the intermediate connection line CT is left behind. In addition, when fusion CX is performed, the surplus connection line CT enters between the joining surfaces to affect the fusion CX,
In some cases, the connection line CT is forcibly bent to cause an electrical trouble, which makes the manufacturing operation extremely troublesome and increases the manufacturing cost.

Accordingly, a technical problem of the present invention is to provide a coil which is configured such that a terminal on a start line side is pulled out from the outer peripheral surface of a coil portion formed by winding a conductive wire having a fusibility in multiple layers. And at low cost.

[0007]

Means taken by the present invention to solve the above-mentioned technical problems are as follows.

[0008] A coil formed by laminating a plurality of conductive wires having a fusible property and winding them spirally,

(1) A coil portion is formed by winding the main wire side in one direction while leaving the start wire side of the above-mentioned conductor wire not wound by an appropriate length in advance, and the terminal is connected to the outer peripheral surface of the coil portion. It is configured to be pulled out further and fused to the surface of the coil portion while winding the start line side in the opposite direction to the main line side, and the terminal is drawn out from the outer peripheral surface of the coil portion. . (Claim 1)

(2) Each terminal on the main line side and the start line side extending outward from the outer peripheral surface of the coil portion is configured to be pulled out from the outer peripheral surface of one end surface or both end surfaces of the coil portion, respectively. (Claim 2)

According to the first aspect of the present invention, the main line is wound in one direction to form a coil portion, and then the start line, which is left unwound, is wound in the opposite direction. While being fused and integrated with the coil part side, the terminal on the start line side can be pulled out not from the center side of the coil part but from the outer peripheral surface side.

In addition, when the coil is housed in a case or the like, it is not necessary to pull out the terminal on the side of the start line to the side surface of the coil portion. It can be stored in a stable state, and it is not necessary to treat extra wires such as connection wires by winding and fusing it around the coil on the main wire without leaving the start wire side. Extremely simple,
It is possible to provide a coil having a structure in which the terminal on the start line side is drawn out from the outer peripheral surface at a relatively low cost.

According to the means according to the second aspect described in the above (2), since the start wire side is wound in the opposite direction and fused and integrated with the coil portion on the main wire side, the end of the start wire is connected to the main wire. The same manufacturing method is used to manufacture both a coil that is drawn out from the outer peripheral surface on the same end face side as the terminal on the side and a coil that has the start line and main line terminals drawn out from the outer peripheral surfaces on both ends. It is possible to demonstrate the convenience that can be provided in the process.

As described above, the above (1),
By solving the above technical problem by means of (2),
The problem of the conventional technique can be solved.

[0015]

1 and 2 are perspective views showing the appearance of a coil according to the present invention. In FIG. 1, numeral 1 denotes a spirally wound lead wire having a fusible property. 1A and 1B are a terminal on the main line side and a terminal on the start line side. In the coil unit 1 shown in FIG. 1, each terminal 1A, 1B is drawn out from the outer peripheral surface of one end. In the coil unit 1 shown in FIG. 2, the terminal 1A on the main line side is drawn out from the outer peripheral surface of one end surface, and the terminal 1B on the start line side is drawn out from the outer peripheral surface of the other end surface.

FIG. 3 is a schematic view for explaining the outline of the procedure for winding and forming the coil according to the present invention. In the present invention, a so-called conductor in which a thin film of a thermoplastic resin or a thermosetting resin is coated as a conductive wire, for example, on the surface thereof. A heat-sealing wire is used. The heat-sealing wire is spirally wound in a multi-layered manner using a fryer (not shown) while heating the heat-sealing wire around the spindle 2, as shown in FIGS. 1 and 2. The coil is molded.

Further, in the present invention, when the main wire of the above-mentioned heat fusion wire is wound to form the coil portion 1, as shown in FIG. 3, the start wire 1S side is left without being wound by an appropriate length. After winding in one direction while heating the main line 1H side to form the coil part 1 integrally, the remaining start line 1S side is wound from the core direction in the opposite direction to the main line 1H side. While being heat-fused to the surface side of the coil section 1, the coil section 1 having a multilayer structure is integrally formed, and the start line 1S and each terminal 1 on the main line 1H side.
As shown in FIGS. 1 and 2, A and 1B are drawn out from the outer peripheral surface of the coil portion 1 to form a coil according to the present invention.

As the thermoplastic resin coated on the conductor, for example, polyethylene, polystyrene, polypropylene or the like is used. As the thermosetting resin, melamine, phenol or the like is used. In addition, a double-coated polyurethane copper wire, polyester copper wire, or the like, in which an insulating film is coated on the peripheral surface as a conductive wire, and the above-mentioned heat fusion film is coated on the insulating film, is used. However, this is also an example of implementation, and the selection is arbitrary.

Also, instead of winding and fusing the heat-fused wire while heating it, the main wire 1H and the start wire 1S are wound to form the coil portion 1, and then the entire coil portion 1 is heated to form a conductive wire. May be fused, the method of fusion is arbitrary.

[0020]

As described above, according to the coil of the present invention, both ends of the main line side and the start line side are drawn out from the outer peripheral surface of the coil portion. When mounting inside the case body etc., it is not necessary to put the end of the start line side to the side of the coil, so the coil is horizontal without processing the start line side or processing the case body side, It is possible to provide an excellent coil which can be accurately mounted without leaving a gap between the core and the iron core and which is free from electric loss and obstacle.

[Brief description of the drawings]

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

FIG. 2 is a perspective view showing another example of the coil according to the present invention.

FIG. 3 is a configuration diagram illustrating a procedure for winding and forming a coil according to the present invention.

FIG. 4 is a perspective view showing a conventional coil.

FIG. 5 is a sectional view taken along line XX of FIG. 4;

FIG. 6 is a perspective view illustrating a state in which a conventional improved coil is formed by winding.

FIG. 7 is a front view showing a state where a conventional improved coil is integrally formed.

[Explanation of symbols]

 1 Coil section 1H Main line 1S Start line 1A Terminal on main line side 1B Terminal on start line side 2 Spindle

Claims (2)

[Claims] 1. A coil formed by stacking fusible conductors in multiple layers and spirally winding them, wherein the start wire side of the conductors is left unwound by an appropriate length in advance. The coil portion is formed by winding the main line side in one direction, and the terminal is pulled out from the outer peripheral surface of the coil portion, and the start line side is wound in the opposite direction with respect to the main line side to form the coil portion. Fused to the surface,
The coil is characterized in that the terminal is drawn out from the outer peripheral surface of the coil portion. 2. The main line side and the start line side terminals extending to the outside from the outer peripheral surface of the coil portion are drawn out from the outer peripheral surface at one end surface or both end surfaces of the coil portion, respectively. The coil according to 1.