JPH10205773A - Heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of parts and assembling man-hours and realize the effective use of a space in an upper unit case, wherein a heat insulating material on which a heating line is fixedly mounted is encased in an outer shell case and a recess which engages with a coil spring is formed in the lower portion of the outer shell case. SOLUTION: A heater unit 23 comprises a coil heater 24, a silica-based powdery heat insulating material 25 on which the heater 24 is mounted, an outer shell member 26 which encases these parts, an electricity supply terminal 27 and a terminal pad 28. On the lower surface of the outer shell case 26, a plurality of recesses 32 are formed at three positions, wherein a plurality of heater springs 30 which are inserted in a plurality of support shafts 29 mounted on an upper unit case 21 are engaged with the recesses 32 by way of an insulating plate 31. Due to such a construction, at the time of setting the heater unit 2 in the upper unit case 21, the heater springs 30 can be set without any additional parts so that the operability is enhanced. Furthermore, since the engaging portions do not protrude from the outer periphery of the outer shell case 26, it becomes possible to make an effective use of a space defined in the unit case 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooking device used in ordinary households.

[0002]

2. Description of the Related Art The prior art will be described by taking an upper unit of an embedded induction heating cooker as an example. Conventionally, this type of embedded induction heating cooker has a structure as shown in FIGS. That is, 1 is an upper unit that is dropped into the upper opening of the sink 2, and 3 is a lower unit that slides from the front of the sink 2 and engages with the upper unit 1.
The upper unit 1 has a box-shaped upper unit case 4 and a top plate 5 which covers the upper unit case 4 from above, and has a heating coil, a control circuit board and the like inside. The heating coil is located below the plate pattern 6 in FIG.

[0003] A heater unit 9 which is heated by a heating wire 8 is arranged below the plate pattern 7.
A mounting plate 10 is fixed to the heater unit 9 with screws 11, and an upper unit case is inserted through an insulating plate 13 into an engagement hole 12 provided outside the outer periphery of the heater unit 9. 4 is engaged with the support shaft 14 provided in the apparatus. At this time, the support shaft 1
Heater spring 15 inserted in 4
The unit 9 is pressed on the top plate 5.

The energizing terminal 16 of the heater unit 9 is located on the side of the main body case, and the heating wire 8 is heated by a U-shaped bracket 18 on a heat insulating material 17 on which the heating wire 8 is placed. It is fixed below the wire 8 (on the side in contact with the heat insulating material 17).

The lower unit 3 is provided with a roasting section 19 for grilling fish, a kangar-pocket type operation section 20, and the like.

[0006]

However, in such a structure, the heater unit 9 is connected to the upper unit case 4.
Since the mounting plate 10 is required for mounting inside, the number of parts and the number of assembling steps are increased, which leads to an increase in cost. In addition, since the engagement hole 12 is located outside the outer periphery of the heater unit 9, A limited space in the upper unit case 4 is taken extra, and there is a problem that restrictions on arranging other components such as a circuit board and a cooling fan motor increase.

The energizing terminal 16 is also connected to the heater unit 9.
Further, the same problem has been presented since it is located on the side surface of the main body case.

Further, the heating wire 8 placed on the heat insulating material 17
Since the lower side of the heating wire 8 is fixed by the U-shaped bracket 18, the workability at the time of driving is poor and the heating wire pitch may be expanded.

[0009]

SUMMARY OF THE INVENTION In order to solve this problem, the present invention provides a concave portion for engaging a coil spring below an outer case enclosing a heat insulating material on which a heating wire is mounted and fixed. Things.

This eliminates the need to attach additional parts when attaching the heater unit to the upper unit case, thereby reducing the number of parts and the number of assembly steps, and the engagement portion is provided at a position smaller than the outer periphery of the heater unit. Since it does not protrude, the space in the upper unit case can be used effectively.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention comprises a flat top plate, a heater unit which is provided below the top plate, and a heater unit. The heater unit has a coil spring supported from below and brought into contact with the top plate. The heater unit has a heating wire mounted and fixed on a heat insulating material, and a coil spring disposed below an outer case containing the heating wire. This makes it unnecessary to attach additional parts when the heater unit is attached to the upper unit case, thereby reducing the number of parts and the number of assembly steps, and Is hi
Since it does not protrude from the outer periphery of the unit, the space in the upper unit case can be used effectively.

According to a second aspect of the present invention, a terminal block for fixing a terminal provided at the end of the heating wire of the heater unit is provided on the lower surface of the outer case. Since the current-carrying terminals do not protrude from the outer periphery of the heater unit when the device is mounted on the upper unit case, the space in the upper unit case can be used effectively.

According to a third aspect of the present invention, the terminal provided at the end of the heating wire of the heater unit penetrates a heat insulating material on which the heating wire is mounted and fixed, and protrudes below the outer casing. Since the shape is stable, the heater unit can be easily penetrated to the outside of the heater unit via a heat insulating material when assembling the heater unit.

According to a fourth aspect of the present invention, the terminal provided at the end of the heating wire is directly fixed to the terminal block provided on the lower surface of the outer case, so that the stable shape of the current-carrying terminal is obtained. Has the effect of keeping.

According to a fifth aspect of the present invention, the heating wire mounted on the heat insulating material is fixed by being covered from above with a U-shaped bracket, so that the workability at the time of driving can be improved. In addition, it has the effect of stabilizing the pitch shape of the heating wire.

According to a sixth aspect of the present invention, a needle portion and a shoulder portion are provided at the tip of a U-shaped metal fitting. Excessive driving at the time of driving is prevented by the shoulder portion, and cracks in the heat insulating material are prevented. This has the effect of preventing deformation of the heating wire.

[0017]

【Example】

(Embodiment 1) Hereinafter, an embodiment of the present invention will be described with reference to the drawings, taking an upper unit of an embedded induction heating cooker as an example. The appearance of the embodiment of the present invention is substantially the same as that of the conventional example, and thus the description is omitted.

In FIG. 1, reference numerals 21 and 22 denote an upper unit case 21 and a top plate 22 which form an upper unit which is dropped into the upper opening of the sink, and have heaters therein.
It has a unit 23. The heater unit 23 includes a coil heater 24 which is a heating wire, a silica-based powder heat insulating material 25 for mounting and fixing the same, an outer case 26 containing them, a terminal 27 for energizing, and a terminal block. It is formed from 28.
An insulating plate is provided on the lower surface of the outer case 26 with a heater spring 30 inserted into a support shaft 29 provided on the upper unit case 21.
There are provided three recesses 32 to be engaged via 31.

Next, the operation of the configuration of the embodiment will be described. When setting the heater unit 23 in the upper unit case 21, the heater unit 23 can be mounted without attaching additional parts.
It can be set on the tar spring 30 and the workability can be remarkably improved. In addition, since the engaging portion does not protrude from the outer periphery of the outer case 26, the space in the upper unit case 21 can be used effectively. Become.

(Embodiment 2) A second embodiment of the present invention will be described below with reference to FIG. In the embodiment shown in FIG. 2, a terminal block 43 is provided on the lower surface of the outer case 42 of the heater unit 41.
Is provided. A substantially linear portion 45 of the coil heater 44 penetrates the heat insulating material 46, and a terminal 47 provided at the tip thereof is a terminal block.
Screws are fixed to 43 conductive plates 48.

Next, the operation of the configuration of this embodiment will be described. Since the current-carrying terminal portion does not protrude from the outer periphery of the outer case 42, the space in the upper unit case can be effectively utilized.

(Embodiment 3) A third embodiment of the present invention will be described below with reference to FIG. In the embodiment shown in FIG. 3, a terminal plate 52 made of metal welded to both ends of a coil heater 51 is provided with a terminal board 55 provided on the lower surface of an outer case 54 through a heat insulating material 53. Screws are fixed to the plate 56.

Next, the operation of this embodiment will be described. When assembling the heater unit, the terminal plate 52 has a stable shape when penetrating the heat insulating material 53, so that the terminal plate 52 can be prevented from being caught in the middle of the penetration and the workability can be remarkably improved. It is.

(Embodiment 4) A fourth embodiment of the present invention will be described below with reference to FIG. In the embodiment shown in FIG. 4, a terminal plate 62 made of metal welded to both ends of a coil heater 61 penetrates a heat insulating material 63 and is provided on a lower surface of an outer case 64. The screw is directly fixed to 65, and faston-connected to the extension 66.

Next, the operation of this embodiment will be described. Since the terminal plate 62 is directly fixed, the stability is excellent, and the conductive plate is not required, so that the material cost can be reduced.

(Embodiment 5) Hereinafter, a fifth embodiment of the present invention will be described with reference to FIG. In the embodiment shown in FIG. 5, a coil heater 72 placed on a heat insulating material 71 is driven into the heat insulating material 71 from above by a U-shaped fitting 73.

Next, the operation of the configuration of this embodiment will be described. When fixing the coil heater, the operator only has to drive the coil heater from above, so that the workability can be improved and the risk of the coil heater pitch being widened can be avoided.

(Embodiment 6) Hereinafter, a sixth embodiment of the present invention will be described with reference to the drawings.

In the embodiment shown in FIG. 6, a needle 82 and a shoulder 83 are provided at the tip of a U-shaped bracket 81.

Next, the operation of the configuration of this embodiment will be described. When the operator fixes the coil heater 84 to the heat insulating material 85, even if the U-shaped fitting 81 is excessively driven into the heat insulating material 85, it can be stopped by the shoulder portion 83, and the crack of the heat insulating material 85 and the coil heat can be prevented. -It is possible to prevent deformation of the rotor 84.

[0031]

As is apparent from the above embodiment, according to the first aspect of the present invention, a flat top plate, a heater unit provided under the top plate, The heater unit has a coil spring for supporting the heater unit from below and abutting against the top plate. The heater unit has an outer casing on which a heating wire is mounted and fixed on a heat insulating material and which includes the heating wire. A concave portion for engaging a coil spring is provided below the housing, which eliminates the need to attach additional parts when mounting the heater unit on the upper unit case, thereby reducing the number of parts and the number of assembly steps. Since the engaging portion does not protrude from the outer periphery of the heater unit, the space in the upper unit case can be effectively used.

According to the second aspect of the present invention, the heater
A terminal block for fixing the terminal provided at the end of the heating wire of the unit is provided on the lower surface of the outer case. Since the energizing terminals do not protrude, the space in the upper unit case can be used effectively.

According to the third aspect of the present invention, the heater
The terminal provided at the end of the heating wire of the unit penetrates the heat insulating material on which the heating wire is placed and fixed, and protrudes below the outer casing, and has a stable shape. -When the unit is assembled, it can be easily penetrated to the outside of the heater unit through the heat insulating material.

According to the fourth aspect of the present invention, the terminal provided at the end of the heating wire is directly fixed to the terminal block provided on the lower surface of the outer case, so that a stable current-carrying terminal is provided. The shape can be maintained.

According to the fifth aspect of the present invention, the heat generating wire mounted on the heat insulating material is fixed by being covered from above with a U-shaped metal fitting, thereby improving workability at the time of driving. And stabilization of the pitch shape of the heating wire can be achieved.

According to the sixth aspect of the present invention, the needle and the shoulder are provided at the tip of the U-shaped metal fitting. Excessive driving at the time of driving is prevented by the shoulder, and the heat insulating material is provided. Cracks and deformation of the heating wire can be prevented.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a main part of a heating cooker according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of a main part of a heating cooker according to a second embodiment of the present invention.

FIG. 3 is a cross-sectional view of a main part of a cooking device according to a third embodiment of the present invention.

FIG. 4 is a cross-sectional view of a main part of a heating cooker according to a fourth embodiment of the present invention.

FIG. 5A is a cross-sectional view of a main part of a cooking device according to a fifth embodiment of the present invention.

FIG. 6 is a cross-sectional view of a main part according to a sixth embodiment of the present invention.

FIG. 7 is an overall perspective view of a conventional example.

FIG. 8 is a sectional view of a main part showing a section taken along line XX in FIG. 7;

FIG. 9 is an exploded perspective view of a main part in a conventional example.

10A is a cross-sectional view of a main part of a heating cooker in a conventional example. FIG.

[Explanation of symbols]

 24, 44, 51, 61, 72, 84 Coil heater 25, 46, 53, 63, 71, 85 Insulation material 26, 42, 54, 64 Outer case 29 Support shaft 30 Heater spring 31 Insulation Plate 32 Recess 43, 55, 65 Terminal block 45 Substantially linear portion 47 Terminal 48, 56 Conductive plate 52, 62 Terminal plate 66 Extension 73, 81 U-shaped metal fitting 82 Needle 83 Shoulder

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Atsuo Ono 1006 Kazuma Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. 72) Inventor Koichi Hosoi 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (6)

[Claims] A flat top plate and a top plate
The heater unit has a heater unit that is provided below the heat source and a coil spring that supports the heater unit from below and abuts on the top plate. A cooking device provided with a concave portion for engaging a coil spring below an outer case enclosing and enclosing the same. 2. A heating cooker in which a terminal block for fixing a terminal provided at an end of a heating wire of a heater unit is provided on a lower surface of an outer case. 3. The heating device according to claim 2, wherein the terminal provided at the end of the heating wire of the heater unit penetrates a heat insulating material on which the heating wire is mounted and fixed, and protrudes below the outer casing. Cooking device. 4. The terminal provided at the end of the heating wire is directly fixed to a terminal block provided on the lower surface of the outer case.
The heating cooker as described. 5. A heating cooker in which a heating wire mounted on a heat insulating material is covered and fixed from above by a U-shaped bracket. 6. The heating cooker according to claim 5, wherein a needle portion and a shoulder portion are provided at a tip portion of the U-shaped fitting.