JPH0757864A - Heating coil unit - Google Patents

Abstract

PURPOSE:To facilitate and ensure the fixation of a lead wire connected to a coil winding with a hook part in a heating coil unit for induction heating cooker, and provide a highly safe heating coil unit easy to manufacture. CONSTITUTION:A lead wire 20 and a lead wire 21 are connected to the inner end part and outer end part of a coil winding 12 arranged in a heating coil unit 11, respectively. The lead wire 20 is drawn from the inner end part of the coil winding 12 to a first protruding part 14, wound on the first protruding part 14, and then drawn to the outside through a first recessed groove 18 provided on a first plate part 16. The lead wire 21 is drawn from the outside end part of the coil winding 12 toward a second protruding part 15, wound on the second protruding part 15, and then drawn to the outside through a second recessed groove provided on a second plate part 17.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating coil unit which constitutes an induction heating cooker.

[0002]

2. Description of the Related Art Conventionally, a heating coil unit of this kind has been shown in FIG. That is, 1 is a heating coil unit, 2 is a coil winding, 3 is a holding base, 4a and 4b are hooks arranged on the outer periphery of the holding base, and 5 is a coil winding near the center of the heating coil unit 1. 2 end (hereinafter,
A lead wire connected to the inner end portion), 6 a lead wire connected to an end portion (hereinafter, referred to as an outer end portion) of the coil winding 2 outside the heating coil unit 1, and 7 a Silicon adhesive, 8 is a ferrite core.

The structure of the above heating coil unit will be described in detail below. The coil winding 2 is placed on the upper surface of the holding table 3, and is fixed to the holding table 3 with an adhesive 7 from the back side along the ribs on the side of the ferrite core 8. The lead wire 5 is attached to the hooking portion 4a,
The lead wires 6 are hooked on the hooking portions 4b, respectively. Furthermore, in order to prevent the occurrence of abnormal circuit operation due to a short circuit or the like caused by the contact between the lead wire 5 and the lead wire 6, that is, in order to ensure the insulation, the hooking portions 4a and 4b also use the adhesive 7 to hook. Portion 4a, lead wire 5 and hook portion 4b
And the lead wire 6 are fixed to each other so that the lead wire 5 and the lead wire 6 are separated from each other.

[0004]

However, in the conventional heating coil unit, since the hooks 4a and 4b and the lead wires 5 and 6 are fixed by using the adhesive 7, it is troublesome to fix them. It takes, therefore, the heating coil unit 1
There was a problem that it took time to assemble.

The present invention has been made to solve the above problems, and an object of the present invention is to realize a heating coil unit in which the lead wire connected to the coil winding and the hook portion can be fixed easily and reliably.

[0006]

In order to achieve the above object, a heating coil unit of the present invention includes a holding base on which an annular coil winding is disposed, and one end of the coil winding provided on the holding base. A first projecting portion that can be wound with a first lead wire connected to the coil, and a second lead wire that is provided on the holding table and is connected to the other end of the coil winding. A second, which is possible and can hold the first lead wire and the second lead wire, which are wound around the first protrusion, when the second lead wire is wound, in a state of being separated from each other. And a projecting portion of.

[0007]

With the above structure, the lead wire connected to the end of the coil winding is wound around the protruding portion of the holding base,
As a result, the position of the lead wire is securely fixed and does not easily come off the protruding portion, so that the lead wire can be easily and reliably fixed to the protruding portion.

[0008]

【Example】

(Embodiment 1) An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1 and FIG. 2, 11 is a heating coil unit, 12 is a coil winding, 13 is a holder, and 14
Is a first projecting portion provided on the holding table 13, 15 is a second projecting portion provided on the holding table 13, 16 is a flat plate portion of the tip of the first projecting portion, 17 is a tip of the second projecting portion. Flat plate portions, 18 and 19 are first and second concave grooves provided on the upper side of the first and second flat plate portions, 20 is a lead wire connected to the inner end of the coil winding 12, and 21 is a coil. A lead wire connected to the outer end of the winding wire 12, a top plate which is an outer shell of the induction heating cooker body, a printed wiring board 23, and a silicon fixing the holding base 13 and the coil winding wire 24. It is a system adhesive.

The operation of the heating coil unit of the induction heating cooker configured as described above will be described. When manufacturing the heating coil unit 11, first, the holding base 13 and the coil winding wire 12 are fixed with the adhesive 24, and then the lead wire 2
Processes 0 and 21 are performed. The lead wire 20 is drawn straight out from the inner end of the coil winding 12 near the center of the heating coil unit 11 toward the first protruding portion 14 and wound around the first protruding portion 14 once. , And is drawn out through the first groove 18 in the first flat plate portion 16. The lead wire 20 is held by the holding base 13 by being wound around the first protruding portion 14, and is more surely held by passing through the first concave groove 18. Similarly, the lead wire 21 is also drawn straight out from the winding end portion of the coil winding toward the second projecting portion 15, and the second projecting portion 1
After being wound once around 5, it is pulled out to the outside through the second groove 19 in the second flat plate portion 17. Lead wire 2
The wire 1 is held by the holding table 13 by being wound around the projecting portion, and is held more reliably by passing it through the second groove 19. In this way, the lead wires 20 and 21 and the holding base 13 can be fixed easily without using an adhesive. In addition, after the heating coil unit 11 is incorporated into the induction heating cooker body, the first and second flat plate portions 1
The gap a between the top plates 22 and 6 and 17 is made slightly narrower than the thickness of the lead wires 20 and 21 of the coil winding. The holding table 13 and the lead wires 20 and 21 can be reliably held without coming off from the groove 19.

Further, in the present embodiment, the number of windings of the lead wires 20 and 21 around the projecting portions 14 and 15 is set to one, but it may be more than this, and the remaining dimensions of the lead wires 20 and 21 can be changed by changing the number of windings. Since the induction heating cooker body is assembled with the heating coil unit 11 and the lead wire 20 or 21 is connected to the terminal of the printed wiring board 23 with a proper length, the lead in the body can be adjusted. There is an effect that the excess work of the wires 20 and 21 is eliminated to simplify the wiring work and prevent the lead wires 20 and 21 from touching other charging parts.

(Second Embodiment) A second embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 3 and 4, 31 is a heating coil unit, 32 is a coil winding consisting of a self-bonding wire,
Reference numeral 33 is a holding base, 34 is a holding claw, 35 is a holding claw fixing base provided on the holding base 33, 36 is a protrusion provided on the holding base 33, and 37 is a lead wire support member provided at the tip of the protrusion 36. The flat plate portion, 38 is a groove provided on the upper side of the flat plate portion, 39 is the first pawl of the pressing pawl 34, 40 is the second pawl of the pressing pawl 34, 41 is a mounting screw, and 42 is a coil winding 32. A lead wire connected to the inner end of the coil winding 43, a lead wire connected to the outer end of the coil winding 32, and a holding rib 44 provided integrally with the holding base 33. The coil winding 32 is sandwiched between the table 33 and the table 33.

The operation of the heating coil unit constructed as above will be described below.

First, the lead wire 42 is pulled out toward the projecting portion 36, wound once around the projecting portion 36, and then pulled out through the concave groove 38 of the flat plate portion 37 which is the lead wire supporting member. The first claw 39 of the pressing claw 34 presses the coil winding and the lead wire 43, the second claw 40 is aligned with the gap between the holding table 33 and the flat plate portion 37, and the lead wire 42
Attach the holding claw 34 by pressing the
It is fixed to the holding table 33 with. In this way, the lead wire 4
Since the pressing claws 34 mechanically press the members 2 and 43 from above, they can be securely fixed to the holding table 33. Further, in the present embodiment, since the second claw 40 of the pressing claw 34 is aligned with the gap between the holding table 33 and the flat plate portion 37, the positioning of the pressing claw 34 and the holding table 33 is facilitated, and the heating coil unit. Assembling 31 is effective.

[0016]

As described above, according to the present invention, the holding base is provided with the projecting portion, and the lead wire connected to the end of the coil winding is wound around the projecting portion to hold the lead wire. It is possible to obtain a heating coil unit that can be easily fixed to a holding table, saves labor for that, is easy to manufacture, and has high safety.

Further, according to the present invention, since the inner peripheral side and outer peripheral side terminal lead-out portions of the coil winding are simultaneously pressed by the pressing claw and the holding base, the lead wire at the inner and outer ends of the coil winding is fixed to the holding base. It is possible to obtain a heating coil unit that can be reliably performed, is easy to manufacture, and has high safety.

[Brief description of drawings]

FIG. 1 is a perspective view of a heating coil unit of an induction heating cooker according to a first embodiment of the present invention.

FIG. 2 is a sectional view of the induction heating cooker according to the first embodiment of the present invention.

FIG. 3 is a perspective view of a heating coil unit of an induction heating cooker according to a second embodiment of the present invention.

FIG. 4 is a plan view of a heating coil unit of an induction heating cooker according to a second embodiment of the present invention.

FIG. 5 is a perspective view of a heating coil unit of a conventional induction heating cooker.

[Explanation of symbols]

 11, 31 Heating coil unit 12, 32 Coil winding 13, 33 Holding table 14 First protruding portion 15 Second protruding portion 20, 21, 42, 43 Lead wire 34 Holding claw

Claims (3)

[Claims] 1. A holding base on which an annular coil winding is disposed, and a first lead wire provided on the holding base and connected to one end of the coil winding and capable of winding a first lead wire. It is possible to wind the projecting portion and a second lead wire provided on the holding table and connected to the other end of the coil winding wire, and when the second lead wire is wound, the first lead wire is wound.
A heating coil unit having a first protrusion wire and a second protrusion portion capable of holding the first lead wire and the second lead wire, which are wound around the protrusion, in a separated state. 2. The heating coil unit according to claim 1, further comprising a lead wire support member having a recessed groove which is provided at a tip of at least one of the protruding portions and into which a lead wire can be fitted. 3. The method according to claim 1, further comprising a lead wire fixing member that is provided on the holding table and holds the lead wire wound around the first projecting portion, the second projecting portion, or the holding table together with the holding table. Item 2. A heating coil unit according to item 2.