JPH0665125B2 - Winding method of induction heating coil - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method of winding an induction heating coil.

(B) Conventional Technology Conventionally, as is seen in electric heaters, a structure in which a groove is formed by continuous or discontinuous projections of a heat-resistant and insulating material and a conductor is fitted into the groove is well known. ing.

Further, in the induction heating coil, it is general that the heating coil base is formed of a heat resistant insulating material and the coil conductive wire is wound around the heating coil base. For example, as shown concretely in JP-A-58-16492, FIG. 13 and its I-
A heating coil base (2) made of a heat-resistant insulating resin material as shown in FIG. 14 which is a cross-sectional view taken along line I ′ has a conductive wire (1) centered on a convex portion (3) provided on the coil base (2). ) Is wound and the conductive wire
The structure is such that it is bonded and fixed by self-welding in (1). However, in this structure, the adjacent conductive wires are usually in close contact with each other, and in order to configure each conductive wire to have a certain interval, as shown in Japanese Utility Model Application Laid-Open No. 55-144796, the conductive wires are not connected to each other. At the same time, there is a method of involving an insulating object.

C) Problems to be solved by the invention However, in either of the above-mentioned cases, there is a problem that the work of winding the heating coil is not correct, and it takes time to make the heating coil, leading to cost increase. Atsuta

D) Means for Solving the Problems The present invention relates to a shaft body that is rotatable in a state where it is axially fixed to the center of a spirally arranged protrusion of a heating coil base, and is rotatable about this shaft body as a rotation shaft. And a roller provided on the.

(E) Action The conductive wire is supplied to the heating coil base while rotating the shaft body and the heating coil base relatively, and the conductive wire is pushed by the roller attached to the shaft body during the protrusion time on the heating coil base. The winding of the heating coil can be easily performed in a short time.

F) Example FIG. 1 is a top view showing a winding method of an induction heating coil of the present invention, FIG. 2 is a sectional view taken along line AA ′ of FIG. 3, and FIG.
It is a B'cross section. In these figures, (1) shows a heating coil base made of heat resistant resin, and projections (3) are formed at intervals substantially equal to the width of the conductive wire (2) formed by twisting thin metal wires.
Are formed in a spiral shape. Reference numeral (4) shows a shaft body that is fixed to the center of the heating coil stand (1), and the other end is led out to the outside of the heating coil stand (1). (5) is a frustoconical roller rotatably formed around this shaft (4) as a rotation axis, the side surface of which is in contact with the projection (3) of the heating coil base (1). There is. (6) is a reel for supplying the conductive wire (2), (7) is a pulley for controlling the supply state of the conductive wire (2), the conductive wire in a state substantially perpendicular to the shaft (4) Supply (2).

In such a configuration, while supplying the conductive wire (2) from the reel (6), the heating coil base (1) is rotated about the center,
When the shaft body (4) is fixed, the conductive wire (2) is sequentially pushed between the protrusions (3) of the heating coil base (1) by the roller (5).
The conductive wire (2) may be supplied from the inside or outside of the heating coil base (1). Conductive wire
As a method of supplying (2), it is also possible to supply from above the coil base (1) as shown in FIG.

5 to 7 are cross-sectional views showing the shape of the protrusion (3) formed on the heating coil base (1). In the case of FIG. 5, the protrusion (3) has an R at the upper end of its outer periphery. , In the case of FIG. 6, a protrusion (3)
Protrusions (8) are provided on the upper edge of the outer circumference, and in the case of FIG. 7, protrusions (3)
R is provided on the inner and outer peripheral upper ends.

FIG. 8 is a sectional view showing an essential part of another embodiment of the present invention.
The shaft (4) is provided in parallel with the heating coil base (1), and a plurality of narrow rollers are provided in the range from the inner circumference to the outer circumference of the projection (3) formation location.
(9) (9) is provided in close contact.

FIG. 9 is a sectional view showing still another embodiment of the present invention. In this embodiment, a shaft body (4) is provided in parallel with the heating coil base (1), and a coil winding is provided on the shaft body (4). A roller (5) with a width of several pitches is provided. Also, the shaft body (4) and this shaft body
(4) The inner peripheral surface of the contacting roller (5) is threaded so that the heating coil base (4) rotates while the roller (5) is in contact with the heating coil base (1). When 1) makes one revolution, this roller (5) is displaced by one pitch of coil winding.

In FIG. 10, a protrusion (10) is further formed on the peripheral end of the roller (5), and the conductor (2) is pushed into the space between the protrusions (3) of the heating coil base (1) by the protrusion (10). I am trying.

In Fig. 11, the discontinuous protrusions (11) (11) ... are heating coil bases (1).
FIG. 12 is a side view showing an engaged state of the roller (5) and the heating coil base (1) when formed on the base plate, and FIG. 12 is a sectional view taken along line BB ′ of FIG. That is, in this embodiment, the protrusions (12) (12) of the pitches equal to the pitches of the protrusions (11) (11) on the heating coil base (1) discontinuously provided are the outer peripheral portions of the roller (5). The protrusions (12) (12) ... are provided at one side end of the protrusions, and the protrusions (12) (12) ...
It rotates while it is engaged with the conductive wire (2) and the projections (11) (11) ...
It seems to push in between.

G) Effect of the Invention As described above, the method for winding an induction heating coil according to the present invention includes a rotatable shaft body which is fixed to the center of a spirally arranged protrusion on a coil base, and a shaft which is rotatable. Since the conductive wire is pushed between the protrusions of the coil base by the roller which is rotatably provided with the body as a rotating shaft, the heating coil can be easily wound in a single time, After turning, it can be used as it is as a part of an induction heating cooker.
Therefore, the winding process of the coil is simplified, and the cost for forming the heating coil can be reduced.

[Brief description of drawings]

1 is a top view showing a method of winding an induction heating coil according to the present invention, FIG. 2 is a sectional view taken along the line AA 'in FIG. 1, and FIG. 3 is a sectional view taken along the line BB' in FIG. The figure is a cross-sectional view when the conductive wire is supplied from above the heating coil stand, FIGS. 5 to 7 are cross-sectional views showing the shape of the protrusions formed on the heating coil stand, and FIGS. FIG. 11 is a side view of a roller portion when discontinuous protrusions are provided, FIG. 12 is a sectional view taken along the line CC ′ of FIG. 11, and FIG.
FIG. 13 is a top view of a conventional induction heating coil, and FIG. 14 is a sectional view taken along the line II ′ of FIG. (1) …… Heating coil base, (2) …… Conductive wire, (3) (11) (11)…
… Protrusion, (4) …… Shaft, (5) (9) (9) …… Roller, (6) ……
Reel, (7) …… Pulley, (8) (10) …… Projection, (12) (12)
...... Protrusion.

Claims (1)

[Claims] 1. A spirally-shaped protrusion is arranged on a heating coil base, and when a conductive wire is fitted between the protrusions to form a spiral coil, a spiral-shaped protrusion of the coil base is used. It has a shaft body that is rotatable relative to the coil base in a state where it is locked in the center, and a roller that is rotatably provided with this shaft body as a rotation shaft. A method for winding an induction heating coil, characterized by being pushed between the protrusions of the heating coil base.