JP5430417B2 - Induction heating cooker - Google Patents

Description

  The present invention relates to an arrangement of a terminal block to which a heating coil and a heating coil of an induction heating cooker used in a general home are connected.

In a conventional induction heating cooker of this type, the heating coil and the drive circuit board are connected by extending the lead wire of the heating coil to the drive circuit board, or the space between the heating coil and the drive circuit board in the main body case. A terminal block was provided on the lead wire, and the lead wire of the heating coil and the lead wire of the drive circuit board were extended and connected to the terminal block.
Also, in a conventional induction heating cooker, a terminal block is provided on a coil base on which a heating coil is mounted, and the lead wire of the heating coil is connected to the terminal block, and the lead wire of the drive circuit board is connected to the coil base terminal block. And extended to the terminal block (see, for example, Patent Document 1).

  In an induction cooking device in which a terminal block is provided on a coil base on which such a heating coil is mounted, when a plurality of heating coils are mounted on the coil base, the heating coils are arranged concentrically. Therefore, the length of the lead wire of the heating coil hardly changes no matter where the terminal block is arranged on the circumference of the coil base.

JP 2002-75611 A (first item, FIG. 5)

However, in a conventional induction heating cooker, when a plurality of heating coils are mounted on the coil base, and the plurality of heating coils on the coil base are not concentric, respectively, the lead of the heating coil depends on the position of the terminal block. The length of the line will change greatly.
Moreover, since there is a top plate on which the cooking container to be heated is placed on the upper part of the heating coil, the lead wire of the heating coil usually passes through the lower surface of the coil base. In addition, there is a problem that the cooling air is greatly hindered by the cooling fan from the lower surface.

Furthermore, if the lead wire of the heating coil is long, the possibility of contact with other parts increases, and the lead wire of the heating coil is damaged or leaks, so it is necessary to cover it with a cover such as an insulating tube. The hindrance is even greater.
Further, when the number of heating coils increases, the number of lead wires of the heating coils and the connection points of the terminal blocks increase, and there arises a problem that the connection between the heating coils and the terminal blocks becomes complicated.

  The present invention has been made to solve the above problems, and can reduce the cost of the lead wire of the heating coil, reduce the possibility of contact with other components, eliminate the need for a cover such as an insulating tube, and reduce the cost. Another object of the present invention is to provide an induction heating cooker that can secure an air-cooling space and can easily connect a heating coil and a terminal block.

An induction heating cooker according to the present invention includes a box-shaped main body case constituting the main body of the heating cooker, and a flat plate-like top for placing the cooked cooking container. In an induction heating cooker provided with a plate, a plurality of heating coils disposed in a main body case, a coil base for mounting the plurality of heating coils, and a drive circuit board that allows high-frequency current to flow through the heating coils A plurality of annular heating coils are arranged on the coil base so as not to be concentric with each other, and are adjacent to one heating coil and one of the heating coils on the outer peripheral side of one heating coil in the coil base. a line extending from a center intermediate the street coil-based heating coil, the center middle of the street coil-based heating coil adjacent to one side of the other and the heating coil and a line extending to the outer periphery In the region, the base-integrated terminal block lead terminals and the drive circuit board for energizing the heating coil and the lead wire terminal having means for connecting each of said heating coil is provided integrally with the coil base, A terminal having a heating coil provided concentrically with the coil base in the center on the coil base, and means for connecting a lead wire terminal of the heating coil and a lead wire terminal of a drive circuit board for driving the heating coil, respectively. The base is shared with the base-integrated terminal block .

In the induction heating cooker according to the present invention, a plurality of annular heating coils are spaced apart from each other on a coil base disposed in a box-shaped main body case constituting the heating cooker body. A broken line on a line extending from the center of the coil base through the middle of the heating coil and the heating coil adjacent to one of the heating coils on the outer peripheral side of one heating coil in the coil base, the heating coil and others Lead wire terminal of the heating coil and the lead wire of the drive circuit board for energizing the heating coil in a region between the broken line on the line extending from the center of the coil base through the middle of the heating coil adjacent to one side Since the base-integrated terminal block having means for connecting the terminals to each other is provided integrally with the coil base, the lead wire of the heating coil can be shortened. It is possible to secure the air-cooled space it is possible to reduce the list.
Further, since the base-integrated terminal block is provided integrally with the coil base and is near one heating coil, the terminal block of the lead terminal of the heating coil can be easily connected without making a mistake.

The perspective view which shows the external appearance of the induction heating cooking appliance of Embodiment 1 of this invention. The perspective view which shows the internal structure of the induction heating cooking appliance. The top view of the coil base of the induction heating cooking appliance. The top view of the coil base of the induction heating cooking appliance of Embodiment 2 of this invention. The top view of the coil base of the induction heating cooking appliance of Embodiment 3 of this invention. The top view of the coil base of the induction heating cooking appliance of Embodiment 4 of this invention. The top view of the coil base of the induction heating cooking appliance of Embodiment 5 of this invention. The top view of the coil base of the induction heating cooking appliance of Embodiment 6 of this invention.

Embodiment 1 FIG.
1 is a perspective view showing the appearance of the induction heating cooker according to Embodiment 1 of the present invention, FIG. 2 is a perspective view showing the internal structure of the induction heating cooker, and FIG. 3 is a coil base of the induction heating cooker. It is a top view.
As shown in FIG. 1, the induction heating cooker of this Embodiment 1 is arrange | positioned so that the upper opening of the box-shaped main body case 1 and main body case 1 which comprise a main body of a heating cooker may be plugged, For example, a flat top plate 3 made of a non-magnetic material such as heat-resistant glass is provided for placing the container 2 thereon.

FIG. 2 shows an outline of the internal structure of the induction heating cooker according to the first embodiment of the present invention, and heating that generates an alternating magnetic field for induction heating the heated cooking container 2 on the left and right in front of the main body case 1. A coil 4 and a coil base 5 on which the heating coil 4 is placed are provided.
In addition, drive circuit boards 6 for supplying a high-frequency current to the heating coil 4 are provided on the left and right sides in the main body case 1 respectively. Further, a cooling fan 7 for cooling the drive circuit board 6 is provided between each coil base 5 and each drive circuit board 6 in the main body case 1.

  The coil base 5 is made of a heat-resistant material such as PET and has a substantially disk shape. Ferrite (not shown) made of a magnetic material is bonded to the surface of the coil base 5 opposite to the surface on which the heating coil 4 is placed so as to easily pass a magnetic field with silicon or the like.

As shown in FIG. 3, on the coil base 5 of the induction heating cooker of the first embodiment, four heating coils 4a to 4d are placed at equal angles and at equal intervals.
The four heating coils 4a to 4d have the same elliptical shape. The shape of the heating coils 4a to 4d does not limit the present invention.
Terminals for connecting to a terminal block, which will be described later, are caulked and attached to the terminals of the lead wires of these heating coils 4a to 4d by welding or the like. These heating coils 4a to 4d can be individually driven, and for example, a heating coil to be driven can be selected depending on the shape of the cooked cooking container 2.
Further, terminals for connecting to a terminal block, which will be described later, are also caulked and attached to terminals of the lead wires of the drive circuit board 6 by welding or the like.

In FIG. 3, a broken line a is a line extending from the center O of the coil base 5 and passing between the heating coil 4a and the heating coil 4b adjacent to the heating coil 4a. Similarly, a broken line b is a line extending from the center O of the coil base 5 and passing between the heating coil 4a and the heating coil 4c adjacent to the heating coil 4a.
The lead wire terminals 8a and 8A of the heating coil 4a and the lead wire terminals 9a of the drive circuit board 6 that energize the heating coil 4a in the region between the broken lines a and b on the outer peripheral side of the heating coil 4a in the coil base 5. , 9A are provided integrally with the coil base 5 and have a base-integrated terminal block 10a having means for connecting to each other.

The lead wire terminal 8a protruding from the outer periphery of the heating coil 4a passes over the coil base 5 and is connected to the lead wire terminal 9a of the drive circuit board 6 by the base-integrated terminal block 10a, and comes out from the inner periphery of the heating coil 4a. The lead wire terminal 8A that passes through the center hole of the heating coil 4a passes under the coil base 5 and is connected to the lead wire terminal 9A of the drive circuit board 6 by the base integrated terminal block 10a.
The connection of the lead wire terminals 8b, 8B, 8c, C, 8d, and 8D of the heating coils 4b, 4c, and 4d other than the heating coil 4a is a terminal provided between the coil base 5 and the drive circuit board 6 as in the prior art. Connect to the bases 11b, 11c, and 11d, respectively.
Further, the lead wire terminals 9b, 9B, 9c, 9C, 9d, and 9D of the drive circuit board 6 that energize the heating coils 4b, 4c, and 4d are connected to the terminal blocks 11b, 11c, and 11d, respectively.

As described above, in the first embodiment, four identical elliptical heating coils 4 a to 4 d are arranged on the coil base 5 at equal intervals so as not to be concentric with each other. A broken line a extending linearly from the center of the coil base 5 through the middle of the heating coil 4a and the heating coil 4b adjacent to one side of the heating coil 4a, the heating coil 4a and the other side The lead wire terminals 8a and 8A of the heating coil 4a and the heating coil 4a are energized in the region between the linear broken line b extending from the center of the coil base 5 through the middle of the heating coil 4c adjacent to one side Since the base-integrated terminal block 10a having means for connecting the lead wire terminals 9a and 9A of the drive circuit board 6 is provided integrally with the coil base 5, the heating coil 4 The possible short lead wire, it is possible to ensure a cooling space with can be reduced correspondingly cost.
In addition, since the base integrated terminal block 10a is provided integrally with the coil base 5 and is near the heating coil 4a, the lead wire terminals 8a and 8A of the heating coil 4a can be easily connected without making a mistake with the base integrated terminal block 10a. can do.

  The means or connection method for connecting the lead wire terminals 8a, 8A of the heating coil a and the lead wire terminals 9a, 9A of the drive circuit board 6 in the terminal block 10a is not particularly limited. If the connection is possible, the designer can arbitrarily select such as screwing, caulking, and welding.

Embodiment 2. FIG.
FIG. 4 is a plan view of the coil base of the induction heating cooker according to the second embodiment of the present invention.
In the second embodiment, the four heating coils 4a to 4d are arranged at equal angles and at equal intervals on the coil base 5 so as not to be concentric with each other as in the first embodiment.
All of the four heating coils 4a to 4d on the coil base 5 have the same elliptical shape.
In the second embodiment, for these four heating coils 4a to 4d, base integrated terminal blocks 10a to 10d similar to the base integrated terminal block 10a shown in the first embodiment are provided outside the coil base 5, respectively. Is.

  As shown in FIG. 4, four identical elliptical heating coils 4 a to 4 d are arranged on the coil base 5 at equal intervals so as not to be concentric with each other, and the outer periphery of the heating coil 4 a in the coil base 5. On the side of the heating coil 4a and the heating coil 4b adjacent to one side of the heating coil 4b, a linear broken line a extending from the center of the coil base 5 and the heating coil 4a and the heating coil adjacent to the other side of the other side The base-integrated terminal block 10a is provided integrally with the coil base 5 in a region between the broken line b extending linearly from the center of the coil base 5 through the middle of 4c.

The base-integrated terminal block 10b is on the outer peripheral side of the heating coil 4b in the coil base 5 and in the region between the broken lines a and d, and the base-integrated terminal block 10c is on the outer peripheral side of the heating coil 4c in the coil base 5. The base-integrated terminal block 10d is on the outer peripheral side of the heating coil 4d in the coil base 5 and in the region between the broken line c and the broken line d, respectively. And is provided integrally.
The lead wire terminals 9a, 9A, 9b, 9B, 9c, 9C, 9d, and 9D of the drive circuit board 6 are connected to the base-integrated terminal blocks 10a, 10b, 10c, and 10d, respectively.

As described above, in the second embodiment, four identical elliptical heating coils 4 a to 4 d are arranged on the coil base 5 at equal intervals so as not to be concentric with each other. By providing base-integrated terminal blocks 10a to 10d similar to those of the first embodiment on the outer peripheral sides of the four heating coils 4a to 4d, leads of the four heating coils 4a to 4d on the coil base 5 are provided. The wire can be shortened, and accordingly, the cost can be reduced and an air cooling space can be secured.
In addition, since the base-integrated terminal blocks 10a to 10c are integrally provided on the coil base 5 and are close to the corresponding heating coils 4a to 4d, the lead wire terminals 8a, 8A, 8b of the heating coils 4a to 4d are provided. 8B, 8c, 8C, 8d, and 8D can be easily connected to the respective base-integrated terminal blocks 10a to 10c without making a mistake.

Embodiment 3 FIG.
FIG. 5 is a plan view of the coil base of the induction heating cooker according to the third embodiment of the present invention.
In the third embodiment, there is a heating coil 4e concentrically with the coil base 5 at the center on the coil base 5, and the surroundings are arranged at equal angles and at equal intervals so as not to be concentric with the heating coil 4e. There are only four heating coils 4a-4d.
All of the four heating coils 4a to 4d on the coil base 5 have the same elliptical shape.

As shown in FIG. 5, in the third embodiment, as in the first embodiment, the heating coil 4a and the heating coil 4b adjacent to one side of the heating coil 4a are arranged on the outer peripheral side of the heating coil 4a in the coil base 5. A linear broken line a extending from the center of the coil base 5 through the middle, and a broken line b extending linearly from the center of the coil base 5 through the middle of the heating coil 4a and the heating coil 4c adjacent to the other side of the heating coil 4a The base integrated terminal block 10ae having means for connecting the lead wire terminals 8a, 8A of the heating coil 4a and the lead wire terminals 9a, 9A of the drive circuit board 6 energizing the heating coil 4a, respectively, in the region between Is provided integrally with the coil base 5.
The base-integrated terminal block 10ae is further provided with means for connecting the lead wire terminals 8e, 8E of the heating coil 4e and the lead wire terminals 9e, 9E of the drive circuit board 6 energizing the heating coil 4e.

The connection of the lead wire terminals 8b, 8B, 8c, C, 8d, and 8D of the heating coils 4b, 4c, and 4d other than the heating coil 4a and the heating coil 4e is performed between the coil base 5 and the drive circuit board 6 as in the conventional case. Are connected to terminal blocks 11b, 11c, and 11d.
Further, the lead wire terminals 9b, 9B, 9c, 9C, 9d, and 9D of the drive circuit board 6 that energize the heating coils 4b, 4c, and 4d, respectively, are connected to the terminal blocks 11b, 11c, and 11d, respectively.

  As described above, in the third embodiment, the heating coil 4e that is concentric with the coil base 5 is provided at the center on the coil base 5, and the four same ones are disposed so as not to be concentric with the heating coil 4e. The elliptical heating coils 4a to 4d are arranged at equal angles and at equal intervals, on the outer peripheral side of one heating coil 4a in the coil base 5 and the heating coil 4b adjacent to one side of the heating coil 4a. A linear broken line a extending from the center of the coil base 5 through the middle, and a broken line b extending linearly from the center of the coil base 5 through the middle of the heating coil 4a and the heating coil 4c adjacent to the other side of the heating coil 4a In a region between the lead terminals 8a and 8A of the heating coil 4a, the lead terminals 9a and 9A of the drive circuit board 6 that drives the heating coil 4a, and the lead wires of the heating coil 4e Since the base-integrated terminal block 10ae sharing the means for connecting the terminals 8e, 8E and the lead wire terminals 9e, 9E of the drive circuit board 6 for driving the heating coil 4e is provided integrally with the coil base 5, The lead wires of the coils 4a and 4e can be shortened, and accordingly, the cost can be reduced and an air cooling space can be secured.

In addition, since the base-integrated terminal block 10ae is shared with the terminal block of the heating coil 4a and the terminal block of the heating coil 4e, the number of components can be reduced and the cost can be reduced. Since the connection can be made, the time required for the assembly work is shortened.
Further, since the base-integrated terminal block 10ae is provided integrally with the coil base 5 and is near the heating coil 4a, the lead wire terminals 8a and 8A of the heating coil 4a can be easily connected to the terminal block 10ae without making a mistake. Can do.

Embodiment 4 FIG.
FIG. 6 is a plan view of the coil base of the induction heating cooker according to the fourth embodiment of the present invention.
In the fourth embodiment, the four heating coils 4a to 4d are arranged on the coil base 5 at equal angles and at equal intervals so as not to be concentric with each other. All of the four heating coils 4a to 4d on the coil base 5 have the same elliptical shape.
A broken line a shown in FIG. 6 is a line that extends on the line extending from the center O of the coil base 5 and passes between the heating coil 4a and the heating coil 4b adjacent to the heating coil 4a.

In the fourth embodiment, the lead wire terminal 8a of the heating coil 4a is within a range including the broken line a on the outer peripheral side including a part of the heating coil 4a and a part of the heating coil 4b adjacent thereto in the coil base 5. , 8A and means for connecting the lead wire terminals 9a and 9A of the drive circuit board 6 to energize the heating coil 4a, and lead wires of the drive circuit board 6 to energize the lead wire terminals 8b and 8B of the heating coil 4b and the heating coil 4b A base-integrated terminal block 10ab sharing a means for connecting the terminals 9b and 9B is provided.
The lead wire terminals 8c, 8C, 8d and 8D of the heating coils 4c and 4d other than the heating coils 4a and 4b are connected to the terminal blocks 11c and 11d provided between the coil base 5 and the drive circuit board 6 as in the conventional case. Connect to each.
Further, the lead wire terminals 9c, 9C, 9d, 9D of the drive circuit board 6 are connected to the terminal blocks 11c, 11d, respectively.

  As described above, in the fourth embodiment, four identical elliptical heating coils 4a to 4d are arranged on the coil base 5 at equal intervals so as not to be concentric with each other. A broken line in a linear shape extending from the center of the coil base 5 on the outer peripheral side including a part of the heating coil 4a and a part of the heating coil 4b adjacent thereto and passing between the heating coil 4a and the heating coil 4b adjacent thereto. means for connecting the lead wire terminals 8a, 8A of the heating coil 4a and the lead wire terminals 9a, 9A of the drive circuit board 6 energizing the heating coil 4a to the range including a, and the lead wire terminals 8b, 8B of the heating coil 4b. And a base-integrated terminal block 10ab that shares the means for connecting the lead wire terminals 9b and 9B of the drive circuit board 6 for energizing the heating coil 4b are provided integrally with the coil base 5. Because are heating coils 4a, can be shortened lead portion of 4b, it is possible to ensure the cooling space with reduce correspondingly cost.

Further, since the base-integrated terminal block 10ab shares the terminal block of the heating coil 4a and the terminal block of the heating coil 4b, the number of parts can be reduced and the cost can be reduced, and the two heating coils 4a and 4b can be reduced at one place. As a result, the time required for assembly work can be shortened.
Further, since the base-integrated terminal block 10ab is provided integrally with the coil base 5 and is near the two heating coils 4a and 4b, the lead wire terminals 8a and 8A of the heating coil 4a and the lead wire terminal 8b of the heating coil 4b. , 8B can be easily connected to the base-integrated terminal block 10ab without making a mistake.

Embodiment 5 FIG.
FIG. 7 is a plan view of the coil base of the induction heating cooker according to the fifth embodiment of the present invention.
In the fifth embodiment, four heating coils 4 a to 4 d are arranged on the coil base 5 at equal angles and at equal intervals so as not to be concentric with each other. All of the four heating coils 4a to 4d on the coil base 5 have the same elliptical shape.
A broken line a shown in FIG. 7 is a line that extends on the line extending from the center O of the coil base 5 and passes between the heating coil 4a and the heating coil 4b adjacent to the heating coil 4a.
A broken line c shown in FIG. 7 is a line that extends on the line extending from the center O of the coil base 5 and passes between the heating coil 4c and the heating coil 4d adjacent to the heating coil 4c.

In the fifth embodiment, the lead wire terminal 8a of the heating coil 4a is within a range including the broken line a on the outer peripheral side including a part of the heating coil 4a and a part of the heating coil 4b adjacent thereto in the coil base 5. , 8A and means for connecting the lead wire terminals 9a and 9A of the drive circuit board 6 to energize the heating coil 4a, and lead wires of the drive circuit board 6 to energize the lead wire terminals 8b and 8B of the heating coil 4b and the heating coil 4b A base-integrated terminal block 10ab sharing a means for connecting the terminals 9b and 9B is provided integrally with the coil base 5.
In addition, the lead wire terminals 8c and 8C of the heating coil 4c and the heating coil are within an outer peripheral side including a part of the heating coil 4c and a part of the heating coil 4d adjacent to the coil base 5 and a range including the broken line c. Means for connecting the lead wire terminals 9c, 9C of the drive circuit board 6 energizing 4c, the lead wire terminals 8d, 8D of the heating coil 4d and the lead wire terminals 9d, 9D of the drive circuit board 6 energizing the heating coil 4d. A base-integrated terminal block 10cd sharing the means for connection is provided integrally with the coil base 5.

  As described above, in the fifth embodiment, four identical elliptical heating coils 4a to 4d are arranged on the coil base 5 at equal intervals so as not to be concentric with each other. A broken line in a linear shape extending from the center of the coil base 5 on the outer peripheral side including a part of the heating coil 4a and a part of the heating coil 4b adjacent thereto and passing between the heating coil 4a and the heating coil 4b adjacent thereto. means for connecting the lead wire terminals 8a, 8A of the heating coil 4a and the lead wire terminals 9a, 9A of the drive circuit board 6 energizing the heating coil 4a to the range including a, and the lead wire terminals 8b, 8B of the heating coil 4b. And a base-integrated terminal block 10ab that shares the means for connecting the lead wire terminals 9b and 9B of the drive circuit board 6 for energizing the heating coil 4b are provided integrally with the coil base 5. The coil base 5 includes a part of the heating coil 4c and a part of the heating coil 4d adjacent thereto, and passes through the middle of the heating coil 4c and the heating coil 4d adjacent thereto from the center of the coil base 5. Means for connecting the lead wire terminals 8c, 8C of the heating coil 4c and the lead wire terminals 9c, 9C of the drive circuit board 6 energizing the heating coil 4c to the range including the broken line c on the extending line, and the lead of the heating coil 4d Since the base integrated type terminal block 10cd sharing the wire terminals 8d, 8D and the means for connecting the lead terminals 9d, 9D of the drive circuit board 6 energizing the heating coil 4d is provided integrally with the coil base 5, The lead wires of the heating coils 4a to 4d can be shortened, and accordingly, the cost can be reduced and an air cooling space can be secured.

Further, by having the base integrated terminal block 10cd sharing the heating coil 4c and the heating coil 4d together with the base integrated terminal block 10ab sharing the heating coil 4a and the heating coil 4b, the number of parts is reduced and the cost is reduced. The terminals of the two heating coils 4a and 4b can be connected to the base integrated terminal block 10ab, and the terminals of the two heating coils 4c and 4d can be connected to the base integrated terminal block 10cd. , The time required for assembly work is shortened.
Further, since the base-integrated terminal block 10ab is provided integrally with the coil base 5 and is near the two heating coils 4a and 4b, the lead wire terminals 8a and 8A of the heating coil 4a and the lead wire terminal 8b of the heating coil 4b. 8B can be easily connected to the terminal block 10ab without mistake, and the terminal block 10cd is provided integrally with the coil base 5 and is close to the two heating coils 4c, 4d. The terminals 8c and 8C and the lead wire terminals 8d and 8D of the heating coil 4d can be easily connected to the base integrated terminal block 10cd without making a mistake.

Embodiment 6 FIG.
FIG. 8 is a plan view of the coil base of the induction heating cooker according to the sixth embodiment of the present invention.
In the fifth embodiment, similarly to the third embodiment, there is a heating coil 4e concentrically with the coil base 5 at the center on the coil base 5, and the surroundings are not concentric with the heating coil 4e. There are four heating coils 4a-4d arranged at equal angles and at equal intervals.
All of the four heating coils 4a to 4d on the coil base 5 have the same elliptical shape.
A broken line a shown in FIG. 8 is a line that extends on the line extending from the center O of the coil base 5 and passes between the heating coil 4a and the heating coil 4b adjacent to the heating coil 4a.

In the sixth embodiment, the lead wire terminal 8a of the heating coil 4a is within a range including the broken line a on the outer peripheral side including a part of the heating coil 4a and a part of the heating coil 4b adjacent thereto in the coil base 5. , 8A and means for connecting the lead wire terminals 9a and 9A of the drive circuit board 6 to energize the heating coil 4a, and lead wires of the drive circuit board 6 to energize the lead wire terminals 8b and 8B of the heating coil 4b and the heating coil 4b Base-integrated terminal sharing the means for connecting the terminals 9b and 9B and the means for connecting the lead wire terminals 8e and 8E of the heating coil 4e and the lead wire terminals 9e and 9E of the drive circuit board 6 energizing the heating coil 4e A base 10 abe is provided integrally with the coil base 5.
The lead wire terminals 8c, 8C, 8d and 8D of the heating coils 4c and 4d other than the heating coils 4a, 4b and 4e are connected to the terminal block 11c provided between the coil base 5 and the drive circuit board 6 as in the conventional case. , 11d, respectively.
Further, the lead wire terminals 9c, 9C, 9d, 9D of the drive circuit board 6 are connected to the terminal blocks 11c, 11d, respectively.

  As described above, in the sixth embodiment, there is the heating coil 4e concentrically with the coil base 5 at the center on the coil base 5, and around the four identical coils so as not to be concentric with the heating coil 4e. The elliptical heating coils 4a to 4d are arranged at equal angles and at equal intervals, on the outer peripheral side including a part of the heating coil 4a and a part of the heating coil 4b adjacent thereto in the coil base 5, and the heating coil 4a. And the drive circuit board 6 that energizes the lead wire terminals 8a and 8A of the heating coil 4a and the heating coil 4a within a range including the broken line a on the line extending from the center of the coil base 5 through the middle of the heating coil 4b adjacent thereto. Means for connecting the lead wire terminals 9a and 9A, and the lead wire terminals 9b and 9 of the drive circuit board 6 that energize the lead wire terminals 8b and 8B of the heating coil 4b and the heating coil 4b. The base-integrated terminal block 10abe that shares the means for connecting the lead wire terminals 8e, 8E of the heating coil 4e and the means for connecting the lead wire terminals 9e, 9E of the drive circuit board 6 energizing the heating coil 4e is a coil. Since it is provided integrally with the base 5, the lead portions of the heating coils 4 a to 4 d can be shortened, and the cost can be reduced correspondingly, and an air cooling space can be secured.

Further, by having the base integrated terminal block 10 abe sharing the heating coil 4 a, the heating coil 4 b, and the heating coil 4 e, the number of parts can be reduced and the cost can be reduced, and one base integrated terminal block 10 abe can be reduced. Since the terminals of the three heating coils 4a, 4b and 4e can be connected, the time required for the assembly work is shortened.
Further, since the base integrated type terminal block 10 abe is provided integrally with the coil base 5 and is near the two heating coils 4 a and 4 b, the lead wire terminals 8 a and 8 A of the heating coil 4 a and the lead wire terminal 8 b of the heating coil 4 b. , 8B can be easily connected to the base-integrated terminal block 10ab without making a mistake.

  In the first to sixth embodiments, four identical elliptical heating coils 4a to 4d are arranged on the coil base 5 at equal angles and at equal intervals so as not to be concentric with each other. It is sufficient if the two heating coils 4a to 4d are arranged at intervals so as not to be concentric with each other.

  DESCRIPTION OF SYMBOLS 1 Main body case 2, Heated cooking container, 3 Top plate, 4 Heating coil, 4a-4e Heating coil, 5 Coil base, 6 Drive circuit board, 7 Cooling fan, 8a-8e Lead wire terminal, 8A-8E Lead wire terminal , 9a to 9e Lead wire terminal, 9A to 9E Lead wire terminal, 10a to 10d Base integrated terminal block, 10ae Base integrated terminal block, 10ab Base integrated terminal block, 10cd Base integrated terminal block, 10ab Base integrated terminal Stand, 11b-11d terminal block.

Claims (3)

A box-shaped main body case that constitutes the main body of the cooking device, a flat top plate for placing the cooked cooking container, and a top plate that is placed so as to close the upper opening of the main body case. In an induction heating cooker provided with a plurality of heating coils, a coil base for mounting the plurality of heating coils, and a drive circuit board that allows high-frequency current to flow through the heating coils,
A plurality of annular heating coils are arranged on the coil base at intervals so as not to be concentric with each other, and on the outer peripheral side of one heating coil in the coil base, the heating coil and one adjacent one of the heating coils are heated. In a region between a line extending from the center of the coil base to the outer periphery through the middle of the coil and a line extending from the center of the coil base to the outer periphery through the middle of the heating coil and the heating coil adjacent to the other side of the other side, A base-integrated terminal block having means for connecting the lead wire terminal of the heating coil and the lead wire terminal of the drive circuit board that energizes the heating coil is provided integrally with the coil base ,
A terminal having a heating coil provided concentrically with the coil base in the center on the coil base, and means for connecting a lead wire terminal of the heating coil and a lead wire terminal of a drive circuit board for driving the heating coil, respectively. An induction heating cooker characterized in that a base is shared with the base-integrated terminal block . A box-shaped main body case that constitutes the main body of the cooking device, a flat top plate for placing the cooked cooking container, and a top plate that is placed so as to close the upper opening of the main body case. In an induction heating cooker provided with a plurality of heating coils, a coil base for mounting the plurality of heating coils, and a drive circuit board that allows high-frequency current to flow through the heating coils,
A plurality of annular heating coils are arranged on the coil base so as not to be concentric with each other,
From the center of the coil base to the outer periphery on the outer peripheral side including a part of one heating coil and a part of the heating coil adjacent thereto in the coil base, and passing between the one heating coil and the heating coil adjacent thereto. Means for connecting the lead wire terminal of the one heating coil to the lead wire terminal of the drive circuit board for energizing the heating coil in a range including the extending wire, and the lead wire terminal of the heating coil adjacent to the one heating coil And a base-integrated terminal block that shares a means for connecting a lead wire terminal of a drive circuit board that energizes the heating coil is provided integrally with the coil base ,
A terminal having a heating coil provided concentrically with the coil base in the center on the coil base, and means for connecting a lead wire terminal of the heating coil and a lead wire terminal of a drive circuit board for driving the heating coil, respectively. An induction heating cooker characterized in that a base is shared with the base-integrated terminal block . A box-shaped main body case that constitutes the main body of the cooking device, a flat top plate for placing the cooked cooking container, and a top plate that is placed so as to close the upper opening of the main body case. In an induction heating cooker provided with a plurality of heating coils, a coil base for mounting the plurality of heating coils, and a drive circuit board that allows high-frequency current to flow through the heating coils,
A plurality of annular heating coils are arranged on the coil base so as not to be concentric with each other,
About two heating coils adjacent to each other in the coil base, the one heating coil and a heating coil adjacent thereto on the outer peripheral side including a part of the heating coil and a part of the heating coil adjacent thereto Means for connecting the lead wire terminal of the one heating coil and the lead wire terminal of the drive circuit board for energizing the heating coil in a range including a line extending from the center of the coil base to the outer periphery through the middle of the coil base, A base-integrated terminal block that shares the lead terminal of the heating coil adjacent to the heating coil and the means for connecting the lead terminal of the drive circuit board that energizes the heating coil is provided integrally with the coil base. Induction heating cooker characterized by.

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