JPS5835892A - Induction heating coil and method of producing same - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an induction heating coil and a method for manufacturing the same, and more particularly to an induction heating coil h in which a spirally wound electric wire is fixed to a mounting board, and a farming method thereof.

The conventional induction heating coil is formed near a disc-shaped winding core (2) formed at the center of the inner surface of one jig plate (1) of a winding machine, as shown in Figure 1. Pull out one end of the electric wire < 47 from the lead-out hole ( 31 ), and
The other jig and tool plate (5) is mounted on the winding machine with the other jig and tool plate (5) spaced apart from each other on the inner surface of
The electric wire (4) is spirally wound around the winding core (2) in a gap of 5J, and both jig plate bodies +11+53 are shown in Figure 2 with the electric wire (4) wound spirally. Tighten the bolts (6) and nuts as shown, remove the electric wire (4) from the winding machine without unraveling it, and then unwind it with the jig plate +11 (51) wrapped between the wires. Tool plate (11 (
51 is heat-treated to weld the insulation coatings of the electric wires (4) to each other, and in this state, as shown in Figure 3, both jig plate bodies (IO
Remove the spirally wound electric wire (4) from 2) and place the spirally wound and fixed electric wire (4) on the mounting board (7) coated with adhesive as shown in Figure 4. Place it on the board, heat it in this state, and attach the spiral wire (4) to the mounting board +7J.
The method used was to manufacture a coil by fixing it to the

In this conventional method, the electric wire (4) is easily damaged when removing the spiral electric wire (4) that has been heat-treated between the jig plate (11 (51), and M 14+
It is difficult to locate the center when bonding the wire (41) to the mounting board (7), and a gap tends to occur between the wire (41) and the mounting board (7), making it difficult to bond the wire (4) and the mounting board (7). However, the process tends to be uncertain, requires two additional heat treatments, and has disadvantages such as a large number of steps, high costs, and unstable quality.

The present invention was made in view of the above-mentioned drawbacks, and it is an object of the present invention to provide a groove-positioned heating coil that can securely secure spirally wound electric wires to a mounting board and provide stable quality. .

Furthermore, the present invention provides a method for manufacturing an induction heating coil that reduces the number of manufacturing steps, ensures that the spirally wound electric wire is fixed to the mounting board, and provides a product of stable quality at a low cost. .

The configuration of the induction heating coil of the present invention includes a mounting board having an adhesive hole penetrating from the surface to the inner surface, and an adhesive that is spirally wound around the inner surface of the mounting board and injected from the front adhesive hole. It consists of electric wires that are bonded together and have insulation coatings heat-welded to each other.

The method for manufacturing an induction heating coil of the present invention includes applying an insulating coating between a mounting board in which an adhesive hole penetrating from the surface to the inner surface is formed, and a jig plate body facing away from the inner surface of the mounting board. Winding an electric wire in a spiral shape, and heating the spirally wound electric wire after injecting an adhesive through an adhesive hole in the mounting substrate while adhering the wire between the mounting substrate and the jig plate;
A groove heating coil is manufactured by fixing electric wires to the inner surface of a mounting board, welding the insulation coatings of the wires to each other, removing the jig plate, and fixing the spirally wound electric wires to the mounting board. It is.

Next, the configuration of an embodiment of the present invention will be explained with reference to the drawings, Figures 1-5 and Figure 8.

Ql is a mounting board made of synthetic resin and formed into a substantially square plate shape, and a disc-shaped winding core υ is integrally formed protruding from the center of the inside of this mounting board. Also, this winding core (1
A positioning hole (I) is formed in the center of 11 from the surface to the inner surface.

In addition, the mounting board a has an elongated adhesive hole located on the diagonal line of the mounting board outside the winding core συ, and the mounting board Ql has electric wires α and A lead-out hole α5tte is formed to lead out both ends of the lead-out hole α5tte, respectively.

Further, the electric wire α4 has a synthetic resin insulation coating called a pound wire or a Ritsu wire on the outer periphery, and the electric wire α4 is spirally wound around the outer circumference of the winding core αυ of the mounting board Ql, so that the insulation coating is mutually Heat welding is performed, and the spiral electric wire I is fixed to the mounting board with an adhesive filled through the adhesive hole α3. Note that both ends of the electric wire I are led out from the lead-out hole 051 (161) to the surface side of the mounting board a.

Next, an embodiment of the manufacturing method of the present invention will be described with reference to Figures 5 to 8.

As shown in FIG. The inner surface of a substantially square jig plate αD is brought into contact with the winding core αυ protruding from the inner surface, and the jig plate αη is spaced and opposed to the inner surface of the mounting board, and in this state, as shown in FIG. Mounting board α
Mount e and the jig plate body aη on the winding machine, and insert the electric wire I, whose one end is led out from the lead-out hole a9, into the winding core assembly υ between the mounting board and the jig plate body 1. Wind it into a shape. As shown in the off-line diagram, after winding of this electric wire I is completed, insert the port Qυ into the fixing hole (19c Tighten, fix the mounting board (1G) and the tool plate (In) integrally, pull out the other end of the wire I from the lead-out hole 08, and in this state, remove the mounting board α0 and the tool plate αη from the winding machine. Removal 6 Next, inject adhesive into the inner surface of the mounting board α1 through the adhesive hole 0, heat it in this state, and remove the electricity!
- The electric wire I is fixed in a spiral shape by welding the coatings to each other, and is fixed to the spiral electric wire t14iJt mounting base * (11) with adhesive. By removing the tool plate αη from the mounting board, the induction heating coil (to), which is constructed by fixing the spirally wound electric wire I to the inner surface of the mounting board q, is removed as shown in Figure 8. can get.

In the above embodiment, the jig plate αη was fixed to the mounting board a using ports Qυ and nuts, but it may also be connected using clips.

Note that the mounting board (II) has a concave part (2) formed on the inner surface as shown in Figure 9 and embeds and fixes the ferrite (C), or a recessed part (C) as shown in Figure 10. Mounting board -
ferrite is embedded and fixed on the inner surface of the ferrite.

This conductive heating coil (C) is used as a cooking device, for example, as shown in Figures 9 and 10, a plate (5) is arranged above this coil @ spaced apart and placed on the plate surface. This device heats cooking utensils (2) such as boiling pots using heat generated by eddy currents.

According to the present invention, the wires wound spirally on the inner surface of the mounting board are bonded to the mounting board and the insulating coatings of the wires are welded to each other. The spirally wound electric wire is securely attached to the board, resulting in stable quality.

Further, according to the present invention, the electric wire is spirally wound between the mounting board and the jig plate body spaced apart from and facing the inner surface of the mounting board,
In this state, adhesive is injected through the bonding hole formed on the mounting board, heated, and the mounting board is bonded to the wire and the insulation coating of the wire is welded.The jig plate is removed and the adhesive is applied to the mounting board in a spiral shape. Since the induction heating coil is manufactured by fixing wound electric wires, the insulation coatings of the spirally wound electric wires are welded to each other in order to coil the electric wires and fix them to the mounting board from the beginning. The process of attaching the wire to the mounting board and the process of gluing the wire to the mounting board can be done in 11 steps, reducing manufacturing man-hours.
There is no need to use two jig plates like in the past, and there is no need to remove the jig plate until the wires are bonded and heated, so there is no damage to the wires, and the wires are evenly wound and fixed on the mounting board. As a result, there is no gap between the mounting board and the electric wire, resulting in stable quality improvements.In addition, the gap between the induction heating coil and the plate can be reduced, improving heating efficiency, making it inexpensive and manufacturing efficient. A good induction heating coil can be obtained.

[Brief explanation of the drawing]

Figures 111 to 4 are perspective views showing the manufacturing process of a conventional induction heating coil, and Figures 5 to 8 are perspective views showing the manufacturing process of an induction heating coil according to an embodiment of the present invention. is an explanatory diagram of a cooking device using an induction heating coil according to the present invention,
FIG. 110 is an explanatory diagram of a cooking device using an induction heating coil according to another embodiment of the present invention. Ql-・Mounting board, 0・Adhesive hole, α4・Kenden tai, Q
7)...Jig plate, @...induction heating coil.

Claims (1)

[Scope of Claims] (11) A mounting board having an adhesive hole penetrating from the surface to the inner surface; An induction heating coil is characterized in that it consists of electric wires with insulation coatings heat-welded to each other.(2) A mounting board with an adhesive hole penetrating from the surface to the inside surface, and a spaced-apart opposing wire on the inside surface of the mounting board. A wire with an insulating coating is wound spirally between the mounting board and the tool plate, and the spirally wound wire is attached to the mounting board while being bonded between the mounting board and the tool board. After injecting adhesive through the bonding hole, it is heated to fix the wires to the inner surface of the mounting board, and the insulation coatings of the wires are explosively bonded to each other.The jig plate is removed and wound spirally around the mounting board. 1. A method for manufacturing a grooved heating coil, comprising manufacturing a cast conductive heating coil formed by fixing electric wires.