CN113133146A

CN113133146A - Heater structure and heating cooker

Info

Publication number: CN113133146A
Application number: CN202010587689.8A
Authority: CN
Inventors: 田中利明; 加藤幸生
Original assignee: Shinpo KK
Current assignee: Shinpo KK
Priority date: 2020-01-14
Filing date: 2020-06-24
Publication date: 2021-07-16
Also published as: TW202126965A; JP2021110509A; JP7470962B2

Abstract

The heater structure and the cooking device of the present invention can remove the resistance heating heater from the cooking device, and ensure the electric contact between the resistance heating heater and the power supply when the resistance heating heater is installed in the cooking device. The heater structure (5) is provided with a heater unit (51), a connector unit (52), and a connecting member (523). The heater unit is provided with a first terminal (512) and a resistance heating heater (511) electrically connected to the first terminal. The connector unit has a second terminal (525) electrically connected to a power source. The second terminal has a contact surface (5121a) capable of contacting with the first terminal and can move relatively to the first terminal. The connecting member detachably connects the heater unit and the connector unit. The heater unit or the connector unit further includes a first elastic member (527) that presses one of the first terminal or the second terminal toward the other when the other is pressed in.

Description

Heater structure and heating cooker

Technical Field

The present invention relates to a heater structure provided with a resistance heating heater and a cooking device provided with the heater structure.

Background

A gas burner (gas burner) is a mainstream heat source of a cooking device for cooking food by grilling. However, for example, in a high-rise building, it is sometimes desirable to use an electric heater from the viewpoint of disaster prevention. A heating cooker having an electric heater is disclosed in patent document 1, for example.

Patent document 1: japanese laid-open patent publication No. 9-178193

Disclosure of Invention

And, preferably, the electric heater is detachable from the heating conditioner in order to clean the heating conditioner or replace the electric heater. On the other hand, when the electric heater is mounted on the heating cooker, it is also desirable that the electric heater be electrically connected to the power supply with certainty.

The present invention provides a heater structure which is provided with a resistance heating type heater, can be detached from a heating cooker, and can ensure the electric connection between the heater and a power supply when the heater is arranged in the heating cooker. Another object of the present invention is to provide a cooking device including the heater structure.

The present invention provides the inventions of the aspects disclosed below.

(item 1)

A heater structure for a heating cooker, comprising:

a heater unit including a first terminal and a resistance heating heater electrically connected to the first terminal;

a connector unit including a second terminal electrically connected to a power supply, the second terminal having a contact surface contactable with the first terminal and being relatively movable with respect to the first terminal; and

a connecting member that detachably connects the heater unit and the connector unit; and is

The heater unit or the connector unit further includes a first elastic member that presses one of the first terminal and the second terminal toward the other terminal when the other terminal is pressed in.

(item 2)

The heater structure according to item 1, wherein

The contact surface is a concave curved surface,

the portion of the first terminal that contacts the contact surface is smaller than the contact surface.

(item 3)

The heater structure according to

item

1 or 2, wherein

The heater unit is connected to the connector unit so as to be capable of being turned upside down.

(item 4)

The heater structure according to any one of items 1 to 3, wherein

The heater unit further includes a heater case in which the first terminal is disposed,

the connector unit further includes a connector housing which can be installed in the heating cooker and to which the second terminals are arranged,

the connecting member is a permanent magnet disposed on at least one of the heater case and the connector case,

at least one of the heater housing and the connector housing is made of a magnetic material,

the heater unit and the connector unit are coupled by the heater housing and the connector housing being coupled by the magnetic force of the permanent magnet.

(item 5)

The heater structure of item 4, wherein

The heater unit further includes a first insulator disposed in the heater case, the first terminal is fixed to the first insulator,

the connector unit further includes a second insulator disposed in the connector housing,

the second terminal includes a first portion having the contact surface, and a second portion formed integrally with the opposite side of the contact surface and having a diameter smaller than that of the first portion;

the second insulator includes a first through hole into which the first portion can be inserted, and a second through hole having a smaller diameter than the first portion and into which the second portion can be inserted;

the first portion of the second terminal is disposed in the first through hole, the second portion of the second terminal extends through the first through hole and the second through hole,

the first elastic member is disposed in the first through hole between the first portion and the wall of the second insulator,

when the second terminal is pressed in by the first terminal, the first elastic member is compressed between the first portion and the wall portion of the second insulator, and the second terminal is pressed toward the first terminal by a restoring force of the compressed first elastic member.

(item 6)

A heating cooker comprising the heater structure according to any one of items 1 to 5.

(item 7)

The heating cooker according to item 6, comprising:

an outer housing; and

an inner case housed in the outer case; and is

The outer case has a side wall having a first opening,

the inner case has a side wall having a second opening at a position opposite to the first opening,

the connector unit is immovably fixed to an outer surface of the side wall of the outer housing so that the contact surface of the second terminal is exposed through the first opening and the second opening,

the heater unit is inserted into the first opening and the second opening from inside the inner case, and is connected to the connector unit.

(item 8)

The heating cooker according to item 6, comprising:

an outer housing;

an inner case housed in the outer case; and

a shaft member; and is

The outer case has a side wall having a first opening,

the heater unit and the connector unit are connected by the heater housing and the connector housing being adhered to each other by the magnetic force of the permanent magnet,

the connector unit is connected to an outer surface of the side wall of the outer housing so as to be rotatable by the shaft member such that the contact surface of the second terminal is exposed through the first opening and the second opening,

(item 9)

The heating cooker as claimed in item 8, which is further provided with a second elastic member,

the second elastic member biases the connector unit toward the outer housing.

(item 10)

The heating cooker as claimed in any one of items 6 to 9, which is further provided with a reflecting member,

the reflecting member is at least partially disposed below the heater and reflects heat radiated from the heater.

(item 11)

The heating cooker as claimed in any one of items 6 to 10, which is further provided with a heater cover,

the heater cover prevents dirt from adhering to the heater unit.

ADVANTAGEOUS EFFECTS OF INVENTION

In the heater structure of the present invention, the heater unit including the heater can be detached from the connector unit. Thereby, the heating cooker can be cleaned and the heater unit can be replaced easily. When the heater unit is coupled to the connector unit, one of the first terminal and the second terminal is pressed toward the other of the first terminal and the second terminal by a restoring force of the compressed first elastic member. Thus, the first terminal and the second terminal can be surely electrically contacted, and thus, the heater and the power supply can be surely electrically connected.

Drawings

Fig. 1 to 13 are views illustrating a first embodiment of a heater structure and a heating conditioner according to the present invention, and fig. 14 to 16 are views illustrating a second embodiment of a heater structure and a heating conditioner according to the present invention.

Fig. 1 is a perspective view of a heating conditioner disposed on a stage.

Fig. 2 is an assembled perspective view of the heating conditioner.

Fig. 3 is an exploded perspective view of the heating conditioner.

Fig. 4 is a sectional view taken along line IV-IV of fig. 2.

Fig. 5 (a) is a perspective view of the inside of the outer case before the connector unit is disposed in the outer case, and (b) is a perspective view of the inside of the outer case after the connector unit is disposed in the outer case.

Fig. 6 is a perspective view of the connector unit and the outer case viewed from a different angle from fig. 5, where (a) is a perspective view of the connector unit and the outer case before the connector unit is mounted on the outer case, and (b) is a perspective view of the connector unit and the outer case after the connector unit is mounted on the outer case.

Fig. 7 is a perspective view of the interior of the outer housing after the inner housing is disposed within the outer housing.

Fig. 8 is a perspective view of the interior of the outer housing after the heater unit is disposed.

Fig. 9 (a) is a perspective view showing a partial internal structure of the heater unit, and (b) is a perspective view showing a partial internal structure of the heater unit viewed from a different angle from (a).

Fig. 10 is a perspective view of the heater unit equipped with the heater cover.

Fig. 11 is an exploded perspective view of the connector unit.

Fig. 12 (a) is an assembled perspective view of the connector unit, (b) is an assembled perspective view of the connector unit viewed from a different angle from (a), and (c) is a cross-sectional view of the XIIc-XIIc lines of (a).

Fig. 13 (a) is a sectional view before the heater unit and the connector unit are coupled, and (b) is a sectional view after the heater unit and the connector unit are coupled.

Fig. 14 (a) is a perspective view of the connector unit and the outer case before the connector unit is set in the outer case, and (b) is a perspective view of the connector unit and the outer case after the connector unit is set in the outer case.

Fig. 15 (a) is an assembled perspective view of the connector unit, (b) is an assembled perspective view of the connector unit viewed from a different angle from (a), and (c) is a cross-sectional view of the XVc-XVc line of (a).

Fig. 16 is a sectional view illustrating a method of removing the heater unit from the connector unit.

Description of the symbols

100 heating cooker 521 connector housing

1 outer shell 522 second insulator

11 bottom wall 5221a first through hole

12. 12A, a side wall 5221b and a second through hole

12a opening (first opening) 523 a permanent magnet (connecting member)

121 supporting wall 524 holding member

2: filter 525: second terminal

3 inner housing 5251 first part

Shaft member 5251a first surface (contact surface)

32a opening (second opening) 5252 second part

321 step part 526 fixing member

4 reflecting member 527 first elastic member

40 second elastic member 6 heater cover

5 heater structure 61 casing cover

51 heater unit 611 first part

511 heater 612 second part

512 first terminal 7 food material placing member

513 Heater case 8 Top cover

514 first insulator 82 heating part cover

52 connector unit 9 top plate.

Detailed Description

The heater structure and the heating cooker of the present invention will be described with reference to the drawings. The embodiment to be described below is one specific example showing the preferable aspects of the present invention. The present invention is not limited to the following embodiments, and can be modified as appropriate without departing from the scope of the invention. In addition, hatching may be omitted in the sectional views for clarity.

[ A first embodiment ]

A first embodiment of the heating cooker 100 and the heater structure 5 will be described.

< 1 integral construction of heating cooker

Fig. 1 is a perspective view of a heating conditioner 100 disposed on a stage T. Fig. 2 is an assembled perspective view of the heating conditioner 100. Fig. 3 is an exploded perspective view of the heating conditioner 100. Fig. 4 is a sectional view taken along line IV-IV of fig. 2.

As shown in fig. 3, the heating cooker 100 includes an outer casing 1, a filter 2, an inner casing 3, a reflecting member 4, a heater structure 5, a heater cover 6, an ingredient placing member 7, a top cover 8, a top plate 9, and a control unit (not shown). The heater structure 5 includes a heater unit 51 and a connector unit 52.

As shown in fig. 1, the outer case 1 is housed in a recess provided in the table T. As shown in fig. 4, the filter 2 and the inner case 3 are housed in the outer case 1. The reflecting member 4, the heater unit 51 of the heater structure 5, the heater cover 6, and the food placing member 7 are housed in the inner case 3. The top cover 8 and the top plate 9 are disposed on the upper portion of the outer case 1. The connector unit 52 and the control unit of the heater structure 5 are disposed outside the outer case 1.

The control unit is electrically connected with the power supply. The control unit includes a memory (RAM, ROM) for storing a CPU, a control program, and the like for performing arithmetic processing, and controls the heater structure 5.

As shown in fig. 3, the heater unit 51 includes a resistance heating heater 511. The heater 511 performs heating control by the control unit. The connector unit 52 is electrically connected to the power source via the control unit. The heater unit 51 is detachable from the connector unit 52, and when the heater unit 51 is connected to the connector unit 52, the heater unit 51 is electrically connected to the connector unit 52.

In the cooking device 100, the heat emitted from the heater 511 cooks the food on the food placement member 7. The cooking device 100 can be used as a cooking device for roasting meat or a cooking device for skewering.

Hereinafter, each constituent element of the heating cooker 100 will be described in detail.

< 1-1 external housing and filter >

The outer case 1 and the filter 2 will be described with reference to fig. 3 to 6. Fig. 5 (a) is a perspective view of the inside of the outer case 1 before the connector unit 52 is provided in the outer case 1, and fig. 5 (b) is a perspective view of the inside of the outer case 1 after the connector unit 52 is provided in the outer case 1. Fig. 6 (a) and (b) are perspective views from different angles from fig. 5 (a) and (b), fig. 6 (a) is a perspective view of the connector unit 52 and the outer case 1 before the connector unit 52 is provided in the outer case 1, and fig. 6 (b) is a perspective view of the connector unit 52 and the outer case 1 after the connector unit 52 is provided in the outer case 1.

As shown in fig. 3 and 4, the outer case 1 includes a rectangular bottom wall 11 and four side walls 12(12A to 12D). The outer case 1 is square as viewed from the outside. An opening penetrating the bottom wall 11 is provided at the center of the bottom wall 11. The filter 2 is provided in the opening. A duct D is connected to the lower portion of the outer case 1. The duct D communicates with the opening and is connected to an exhaust device (not shown). Smoke generated when roasting the food material is discharged from the duct D through the filter 2 by the exhaust device.

The filter 2 recovers oil contained in smoke generated when the food material is roasted. The filter 2 is made of metal such as stainless steel. As shown in fig. 3, in the present embodiment, three filters 2 in a ring shape are overlapped one on another. The structure of the filter 2 is disclosed in, for example, japanese patent laid-open publication No. 2011-153722, and thus a detailed description of the structure of the filter 2 is omitted in this specification.

As shown in fig. 3 to 6, a support wall 121 and two guide walls 122 are formed on the inner surface of the side wall 12A and the inner surface of the side wall 12C facing the side wall 12A, respectively. The support wall 121 protrudes inward from the inner surface of the

side walls

12A, 12C, and extends in the horizontal direction. The bottom wall 31 of the inner case 3 is placed on the support wall 121. The two guide walls 122 project inward from the inner surfaces of the

side walls

12A and 12C, and extend upward from both ends of the support wall 121. The two guide walls 122 guide the inner case 3 when the inner case 3 is housed in the outer case 1, and restrict the movement of the inner case 3 in the horizontal direction along the

side walls

12A, 12C, thereby positioning the inner case 3 in the outer case 1.

As shown in fig. 4 to 6, a top cover 8 is attached to the upper portions of the side walls 12A to 12D.

As shown in fig. 5 (a) and 6 (a), the side wall 12A is provided with an opening 12A penetrating the side wall 12A. The opening 12a has a size through which a heater housing 513 (see fig. 3) of the heater unit 51 described below can pass.

< 1-2 inner case >

The inner case 3 will be described with reference to fig. 3, 4, 7, and 8. Fig. 7 is a perspective view showing the inside of the outer case 1 after the inner case 3 is set inside the outer case 1. Fig. 8 is a perspective view showing the inside of the outer case 1 after the heater unit 51 is provided.

As shown in fig. 3 and 4, the inner case 3 includes a rectangular bottom wall 31 and four side walls 32(32A to 32D). The inner housing 3 is square as viewed from the outside. The inner case 3 is disposed in the outer case 1 so that a gap is present between the side wall 32 thereof and the side wall 12 of the outer case 1.

When the heating cooker 100 is used, water is added to the inner casing 3. Thereby, the inner case 3 can be prevented from overheating. Further, since the oil or the like of the food material drops into the water in the inner case 3, it is possible to prevent the dirt such as the oil from directly adhering to the bottom wall 31 and the side wall 32 of the inner case 3.

As shown in fig. 3, an opening 32A is formed in a side wall 32A of the inner case 3 facing the side wall 12A of the outer case 1. The opening 32a faces the opening 12a of the outer case 1. When the inner case 3 is housed in the outer case 1, the opening portion 32a communicates with the opening portion 12 a. The opening 32a has a size through which a heater housing 513 (see fig. 3) of the heater unit 51 described below can pass.

As shown in fig. 4 and 7, a heater bracket 10 for supporting the heater unit 51 is mounted on an inner surface of the side wall 32A. The heater bracket 10 includes a bottom wall 101 and two side walls 102. The bottom wall 101 is substantially flush with the bottom edge of the opening 32a, extends horizontally, and has an upwardly inclined front end (see fig. 13). As shown in fig. 8, a heater housing 513 of the heater unit 51 is placed on the bottom wall 101. The side walls 102 extend upward from both ends of the bottom wall 101 and are substantially flush with the side edges of the opening 32 a.

As shown in fig. 3, 7, and 8, a step portion 321 is provided on an inner surface of the side wall 32B and an inner surface of the side wall 32D facing the side wall 32B. The reflection member 4 is placed on the step portion 321.

< 1-3 reflective Member

The reflecting member 4 will be described with reference to fig. 3 and 4. The reflecting member 4 is made of a material capable of reflecting heat, and is made of metal such as stainless steel, for example. The reflecting member 4 is placed on the step portion 321 of the inner casing 3. The reflecting member 4 is partially disposed below the heater 511, and reflects heat radiated downward from the heater 511 toward the food placing member 7. An opening 4a is provided in the bottom of the reflecting member 4. The oil of the food material or the like falls into the water in the inner casing through the opening 4 a.

< 1-4 food material mounting member >

The food material placing member 7 will be described with reference to fig. 3. As shown in fig. 3, the food material placing member 7 is square, for example, a net. The food material placing member 7 is placed on the stepped portion 321 of the inner case 3. More specifically, after the reflection member 4 is placed on the step portion 321, the food placing member 7 is placed on the reflection member 4.

< 1-5 Dome and roof

The top cover 8 and the top plate 9 will be described with reference to fig. 2 to 4. The top cover 8 is fixed to the upper end of the outer case 1. The top cover 8 has a step 81, and the top plate 9 is placed on the step 81.

The top plate 9 includes a side wall 91 and an upper wall 92.

The side wall 91 is formed with a plurality of through holes 91 a. The through hole 91a communicates with the gap between the side wall 12 of the outer case 1 and the side wall 32 of the inner case 3. When the exhaust device is actuated, smoke generated from the food material being heated is sucked into the through hole 91 a. Then, the smoke flows downward through the gap between the side wall 12 and the side wall 32. This prevents smoke from rising from the food material placing member 7.

A plurality of through holes 92a are formed in the upper wall 92. The through hole 92a is provided closer to the side wall 12 of the outer case 1 than the through hole 91 a. The through hole 92a communicates with the gap between the side wall 12 of the outer case 1 and the side wall 32 of the inner case 3. When the exhaust device is actuated, the outside air is sucked through the through hole 92 a. Then, the outside air flows downward through the gap between the side wall 12 and the side wall 32.

By sucking the external air from the through hole 92a, the upper wall 92 can be cooled by the external air, and overheating of the upper wall 92 can be suppressed. Therefore, the scald of the eater can be prevented. Further, since the through hole 92a is provided closer to the side wall 12 than the through hole 91a, the outside air sucked from the through hole 92a flows closer to the inner surface of the side wall 12 than the smoke sucked from the through hole 91 a. Therefore, the external air sucked through the through hole 92a prevents the smoke containing the oil from directly contacting the inner surface of the side wall 12, and reduces the adhesion of dirt to the inner surface of the side wall 12.

< 1-6 Heater Structure >

Next, the heater structure 5 will be explained. As described above, the heater structure 5 is composed of the heater unit 51 and the connector unit 52.

< 1-6-1 Heater Unit >

First, the heater unit 51 will be described with reference to fig. 9. Fig. 9 (a) is a perspective view showing a partial internal structure of the heater unit 51, and fig. 9 (b) is a perspective view showing a partial internal structure of the heater unit 51 viewed from a different angle from fig. 9 (a).

As shown in fig. 9, the heater unit 51 includes a plurality of heaters 511 (three heaters in the present embodiment), a pair of first terminals 512, a heater housing 513, and a first insulator 514. In fig. 9 (a) and (b), the upper surface of the heater housing 513 is omitted to clearly show the internal structure of the heater housing 513.

The heater 511 is a resistance heating type heater that generates heat by flowing a current to a resistance. The heater 511 includes a heat generating portion 5111 and a lead 5112. The heat generating portion 5111 is electrically connected to the conductive wire 5112. The heat generating portion 5111 has a nichrome wire inside, and generates heat by a current transmitted from the wire 5112. The magnitude of the current flowing in the heat generating portion 5111 can be adjusted by the control unit.

The heater 511 may use a cartridge heater or a package heater, for example. In the present specification, a cartridge heater refers to a heater in which a heating portion is covered by a package, and two lead wires extend from only one end of the heating portion. In the present specification, the package heater refers to a heater in which a heating portion is covered with a package, and two lead wires extend from both ends of the heating portion. In the present embodiment, three cartridge type heaters 511 are arranged in parallel.

The heater case 513 is made of a magnetic material such as ferrite or martensite stainless steel, and has a rectangular parallelepiped shape. Three through holes through which the three heat generating portions 5111 can pass are formed in substantially the center in the vertical direction of one wall portion 5131 of the heater case 513. The opposite side of the wall 5131 has no wall, and an opening is formed.

The heater 511, the first terminal 512, and the first insulator 514 are assembled to enter the heater case 513 through the opening of the heater case 513. The heat generating portion 5111 extends to the outside of the heater case 513 through a through hole provided in the wall portion 5131. Lead 5112, first terminal 512, and first insulator 514 are disposed within heater housing 513. Then, the heater unit 51 is completed by fixing the heater 511 to the wall portion 5131. The heater 511 is disposed at substantially the center in the vertical direction of the heater housing 513, and the heater units 51 are vertically symmetrical. Thereby, the heater unit 51 can be used by reversing the direction of rotation.

Two through holes are formed in the first insulator 514. The pair of first terminals 512 are inserted into the two through holes of the first insulator 514, and are fixed to the first insulator 514 so as not to be movable. Each first terminal 512 is made of a conductive material such as metal. The length of each first terminal 512 is greater than the thickness of the first insulator 514. Thus, both ends of each first terminal 512 extend from the first insulator 514. Each first terminal 512 has a first portion 5121 extending from the first insulator 514 toward the heater 511, and a second portion 5122 extending from the first insulator 514 toward the opposite side of the first portion 5121.

A lead 5112 of the heater 511 is electrically connected to the first portion 5121 of the first terminal 512. In the present embodiment, each lead 5112 of the three heaters 511 is connected to the first terminal 512 so that the three heaters 511 are connected in parallel.

The second portion 5122 of the first terminal 512 is in contact with a first surface 5251a (see fig. 12 c) of the second terminal 525 described below. The front end of the second portion 5122 has a diameter smaller than the first face 5251a and is tapered.

Fig. 10 is a perspective view of the heater unit 51 equipped with the heater cover 6. As shown in fig. 10, the heater cover 6 covers the heater unit 51, protecting the heater unit 51. The heater cover 6 is preferably detachably attached to the heater unit 51. The heater cover 6 includes a case cover 61 covering the heater case 513, and a plurality of heat generating unit covers 62 covering the plurality of heat generating units 5111. For example, the heater cover 6 is preferably made of a highly heat conductive material, for example, a metal such as stainless steel.

The housing cover 61 includes a first portion 611 and a second portion 612. The first portion 611 is disposed on the heater housing 513 and covers a portion of the upper surface of the heater housing 513 exposed in the inner housing 3 when the heater unit 51 is coupled to the connector unit 52. The second portion 612 covers a wall 5131 of the heater housing 513.

The plurality of heat generation unit covers 62 are provided in the same number as the heat generation units 5111. The plurality of heat generating unit covers 62 extend from the housing cover 61, are disposed above the heat generating units 5111, and cover the upper surfaces of the heat generating units 5111.

< 1-6-2 connector unit >

Next, the connector unit 52 will be described with reference to fig. 6, 7, 11, and 12. Fig. 11 is an exploded perspective view of the connector unit 52. Fig. 12 (a) is an assembled perspective view of the connector unit 52, fig. 12 (b) is an assembled perspective view of the connector unit 52 viewed from a different angle from fig. 12 (a), and fig. 12 (c) is a cross-sectional view taken along line XIIc-XIIc of fig. 12 (a).

As shown in fig. 11 and 12, the connector unit 52 includes a connector housing 521, a second insulator 522, a plurality of permanent magnets 523 (two in the present embodiment), a plurality of holding members 524 (two in the present embodiment), a pair of second terminals 525, a fixing member 526, and a first elastic member 527.

The connector housing 521 has a central opening 521a provided in the center thereof and side openings 521b provided on both sides of the central opening 521 a. The second insulator 522 is fitted into the central opening portion 521a and fixed to the connector housing 521. One permanent magnet 523 is attached to each holding member 524. The holding member 524 is fixed to the connector housing 521 in a state where the permanent magnet 523 is fitted into the side opening 521 b. In this way, two permanent magnets 523 are disposed on both sides of the second insulator 522.

The connector housing 521 has flanges 5211 at the upper and lower portions thereof. As shown in fig. 6, by fixing the flange 5211 to the outer housing 1, the connector housing 521 (i.e., the connector unit 52) is fixed so as not to move relative to the outer housing 1.

As shown in fig. 7, when the connector unit 52 is attached to the outer housing 1, the pair of second terminals 525 are exposed to the inside of the outer housing 1 and the inside of the inner housing 3 through the opening 12a and the opening 32 a.

The second terminal 525 is made of a conductive material such as a metal. As shown in fig. 12 (c), the second terminal 525 is composed of a first portion 5251 and a second portion 5252. The first portion 5251 and the second portion 5252 are, for example, cylindrical. The first portion 5251 includes a first surface 5251a in contact with the first terminal 512 and a second surface 5251b opposite to the first surface 5251 a. The first surface 5251a is a concave curved surface. The second portion 5252 is smaller in diameter than the first portion 5251, and is integrally formed on the second face 5251b side of the first portion 5251.

The second insulator 522 has two through holes 5221 formed therethrough. A pair of second terminals 525 are inserted into the two through holes 5221, respectively. Each second terminal 525 is axially slidable in the through hole 5221.

Each through hole 5221 is composed of a first through hole 5221a and a second through hole 5221b communicating with the first through hole 5221 a. The first through hole 5221a has a slightly larger diameter than the first portion 5251 of the second terminal 525. The second through-holes 5221b have a diameter smaller than the first portions 5251 of the second terminals 525 and slightly larger than the second portions 5252 of the second terminals 525.

The first portions 5251 of the second terminals 525 are disposed in the first through holes 5221 a. The second portion 5252 of the second terminal 525 extends through the first through hole 5221a and the second through hole 5221 b.

The overall length of the second terminal 525 is greater than the overall length of the through hole 5221. Therefore, the second portion 5252 extends outward of the second insulator 522 from the second through hole 5221 b. A fixing member 526 for fixing the lead is attached to the second portion 5252 extending from the second through hole 5221 b. The fixing member 526 is, for example, a nut screwed to the second portion 5252. The wire connected to the second portion 5252 is connected to the control unit, whereby the second terminal 525 is electrically connected to the power source via the control unit.

In the present embodiment, the outer diameter of the fixing member 526 is larger than the second through hole 5221 b. Thereby, the fixing member 526 also functions as a stopper that prevents the second portion 5252 extending from the second through hole 5221b from being completely pulled into the second insulator 522. That is, when the second terminal 525 moves in the right direction of fig. 12 (c), the second terminal 525 cannot move in the right direction excessively by the fixing member 526 contacting the second insulator 522. Thereby, a state in which a part of the second portion 5252 extends from the second insulator 522 can be maintained.

As shown in fig. 12 (c), since the diameter of the first through hole 5221a is larger than the second portion 5252 of the second terminal 525, a gap exists between the second portion 5252 located in the first through hole 5221a and the inner surface of the first through hole 5221 a. A first elastic member 527 is disposed in the gap. In the present embodiment, the first elastic member 527 is a coil spring. The second portion 5252 of the second terminal 525 is inserted in the center of the first elastic member 527. The diameter of the first elastic member 527 is larger than the diameter of the second through hole 5221b and is equal to or smaller than the diameter of the first portion 5251 of the second terminal 525. Accordingly, the first elastic member 527 is sandwiched between the first portion 5251 and the wall portion of the second insulator 522. One end of the first elastic member 527 is in contact with the second surface 5251b of the first portion 5251, and the other end of the first elastic member 527 is in contact with the wall of the second insulator 522.

< 2 attachment/detachment of heater unit to connector unit >

The attachment and detachment of the heater unit 51 and the connector unit 52 will be described with reference to fig. 13. Fig. 13 (a) is a cross-sectional view before the heater unit 51 and the connector unit 52 are coupled, and fig. 13 (b) is a cross-sectional view after the heater unit 51 and the connector unit 52 are coupled.

First, a case where the heater unit 51 is coupled to the connector unit 52 will be described. After the food placing member 7 and the heater cover 6 are removed, the heater housing 513 of the heater unit 51 is inserted into the opening 32a of the inner housing 3 and the opening 12a of the outer housing 1 from the inside of the inner housing 3. As shown in fig. 13 (b), the first terminals 512 of the heater unit 51 are brought into contact with the second terminals 525 of the connector unit 52, and the heater unit 51 is pressed toward the connector unit 52. Thereby, the second terminal 525 is pressed in by the first terminal 512. By pressing the second terminal 525 in, the first elastic member 527 is compressed between the first portion 5251 of the second terminal 525 and the wall portion of the second insulator 522.

The heater unit 51 is coupled to the connector unit 52 by attaching the heater case 513 to the permanent magnet 523 of the connector unit 52. The heater housing 513 is placed on the support wall 101 of the heater holder 10, and the heater 511 assumes a horizontal posture.

When the heater unit 51 is coupled to the connector unit 52, the second terminal 525 is always pressed toward the first terminal 512 by the restoring force of the compressed first elastic member 527. Thereby, the electrical contact between the first terminal 512 and the second terminal 525 is maintained. When the switch of the control unit is turned on, current flows to the heater 511, and the heat generating portion 5111 is heated.

Next, a case where the heater unit 51 is removed from the connector unit 52 will be described. After the food placing member 7 and the heater cover 6 are removed, if the heater unit 51 is slightly tilted upward with respect to the connector unit 52, the heater unit 51 is detached from the connector unit 52. In this way, the heater unit 51 can be detached from the connector unit 52.

< 3 feature >

In the heater structure 5 of the present invention, when the heater unit 51 is connected to the connector unit 52, the second terminals 525 are always pressed toward the first terminals 512 by the restoring force of the compressed first elastic member 527. Therefore, in the use of the heating conditioner 100, the electrical contact between the first terminal 512 and the second terminal 525 can be reliably maintained. That is, the electrical connection between the heater 511 and the power source can be surely ensured during the use of the heating cooker 100.

By detachably connecting the heater unit 51 and the connector unit 52, the heater unit 51 can be detached from the connector unit 52 (the heating cooker 100). This makes it possible to easily disassemble and clean the heating cooker 100 and to easily repair and replace the heater unit 51. In particular, by detachably coupling the heater housing 513 and the connector housing 521 by the magnetic force of the permanent magnet 523, the heater housing 513 and the connector housing 521 can be easily coupled and decoupled in one touch.

As shown in (a) of fig. 13, since the diameter of the second portion 5122 of the first terminal 512 is smaller than the first surface 5251a of the second terminal 525, and the first surface 5251a of the second terminal 525 is a concave curved surface, the contact of the first terminal 512 at the center of the first surface 5251a is maintained. That is, even if the first terminal 512 is first in contact with a position offset from the center of the first surface 5251a, the first terminal 512 is guided from the first contact position to the center of the first surface 5251a by the concave curved surface, and is in contact with the first surface 5251a at the center of the first surface 5251 a. Thereby, stable contact of the first terminal 512 and the second terminal 525 can be maintained.

Since the heater unit 51 can be used by being turned upside down, the vertical direction when the heater unit 51 is coupled to the connector unit 52 is not limited, and therefore, the heater unit 51 can be easily coupled to the connector unit 52. Further, by using the heater unit 51 by periodically inverting it up and down, the fouling on the surface of the heat generating portion 5111 can be equalized, and therefore the progress of corrosion of the heat generating portion 5111 due to fouling or sauce can be delayed. As a result, the life of the heater unit 51 can be extended.

By providing a part of the reflecting member 4 below the heater 511, the heat radiated downward from the heater 511 can be reflected toward the food placing member 7. Therefore, the food material can be efficiently cooked by the radiant heat from the heater 511.

By providing the heater cover 6, the heater unit 51 can be prevented from being soiled. That is, by the first portion 611 of the housing cover 61, dirt can be prevented from adhering to the upper surface of the heater housing 51. The second portion 612 of the housing cover 61 prevents dirt from penetrating into the heater housing 513 through the gap between the through hole of the wall 5131 and the heat generating portion 5111. By providing the heat-generating portion cover 82, it is possible to prevent dirt from adhering to the heat-generating portion 5111, reduce corrosion of the heat-generating portion 5111 due to salts contained in oil or sauce, and improve durability of the heat-generating portion 5111.

[ B second embodiment ]

A second embodiment of the cooking device 100 and the heater structure 5 according to the present invention will be described. The following description focuses on differences between the second embodiment and the first embodiment. The same components as those in the first embodiment among the components in the second embodiment are denoted by the same reference numerals, and descriptions thereof are omitted.

Fig. 14 (a) is a perspective view of the connector unit 52 and the outer case 1 before the connector unit 52 is mounted on the outer case 1, and fig. 14 (b) is a perspective view of the connector unit 52 and the outer case 1 after the connector unit 52 is mounted on the outer case 1. Fig. 15 (a) is an assembled perspective view of the connector unit 52, fig. 15 (b) is an assembled perspective view of the connector unit 52 viewed from a different angle from fig. 15 (a), and fig. 15 (c) is a cross-sectional view of the XVc-XVc line of fig. 15 (a). Fig. 16 is a sectional view illustrating a method of detaching the heater unit 51 from the connector unit 52.

The first embodiment differs from the second embodiment in that the connector unit 52 is immovably fixed to the outer case 1 in the first embodiment, whereas the connector unit 52 is turnably attached to the outer case 1 in the second embodiment.

As shown in fig. 14, a connector holder 20 for holding a connector unit 52 is attached to an outer surface of the side wall 12A of the outer case 1. The connector holder 20 includes a bottom wall 201 and two opposing side walls 202. The bottom wall 201 is provided below the bottom edge of the opening 12 a. The two side walls 202 extend from the bottom wall 201 to above the upper edge of the opening portion 12 a. Each side wall 202 has a through hole 202a formed at a position above the upper edge of the opening 12 a. The shaft member 30 for connecting the connector unit 52 to the connector bracket 20 is inserted into the through hole 202 a.

As shown in fig. 14 and 15, the flange 5211 of the connector housing 521 includes two opposing side walls, and through holes 5221a are formed in the side walls, respectively.

As shown in fig. 14, the connector housing 521 is attached to the connector bracket 20 by aligning the through hole 5211a of the flange 5211 with the through hole 202a of the connector bracket 20 and inserting the shaft member 30 into the through

holes

5211a and 202 a. In this way, the connector unit 52 is attached to the outer case 1 via the connector bracket 20 so as to be rotatable about the shaft member 30.

As shown in fig. 14, the second elastic member 40 is attached to the shaft member 30. The second elastic member 40 contacts the outer surface of the side wall 12A of the outer housing 1 and the connector housing 521, respectively, and urges the connector unit 52 toward the outer housing 1. The second elastic member 40 is, for example, a torsion spring.

In the second embodiment, unlike the first embodiment, the permanent magnet 523 is fixed to the heater case 521 without using the holding member 524. However, in the second embodiment, as in the first embodiment, the permanent magnet 523 may be attached to the holding member 524, and the holding member 524 may be fixed to the heater case 521.

With reference to fig. 16, a case where the heater unit 51 is detached from the connector unit 52 will be described. After the food placing member 7 and the heater cover 6 are removed, the heater unit 51 is tilted such that the heater unit 51 is slightly pulled out into the inner case 3 and the tip of the heater 511 faces upward. The heater unit 51 is twisted upward so as to bend a connection portion between the heater housing 513 and the connector housing 521 (i.e., a portion where the heater housing 513 is bonded to the permanent magnet 523), and the heater unit 51 is removed from the connector unit 52. In this way, the heater unit 51 can be detached from the connector unit 52.

When the magnetic force of the permanent magnet 523 is strong, the heater unit 51 may be easily detached from the connector unit 52 when the heater unit 51 is twisted upward as described above. As in the second embodiment, the heater unit 51 can be easily turned obliquely upward by connecting the connector case 521 to the outer case 1 so as to be rotatable, and therefore the heater unit 51 can be easily removed from the connector unit 52.

By urging the connector housing 521 toward the outer housing 1 by the second elastic member 40, the heater structure 5 is not swung, and the posture of the heater structure 5 can be maintained.

[ modification example C ]

A modified example of the heating cooker 100 and the heater structure 5 will be described. The modifications described below can be combined as appropriate without departing from the spirit of the present invention.

(1) The outer casing 1, the inner casing 3, the food placing member 7, the top cover 8, and the top plate 9 are not limited to a square shape, and may be circular, for example.

(2) The first terminal 512 may be movable with respect to the first insulator 514, and the second terminal 525 may be immovably fixed with respect to the second insulator 522. The first elastic member 527 may be disposed in the first insulator 514, and may be configured to press the first terminal 512 toward the second terminal 525 by a restoring force when compressed.

(3) The permanent magnet 523 may be disposed in the heater housing 513, and the connector housing 521 may be made of a magnetic material. Alternatively, the permanent magnet 523 may be disposed in both the heater housing 513 and the connector housing 521.

Claims

1. A heater structure for a heating cooker, comprising:

a connector unit including a second terminal electrically connected to a power source, the second terminal having a contact surface contactable with the first terminal and being relatively movable with respect to the first terminal; and

2. The heater structure of claim 1,

the contact surface is a concave curved surface,

3. The heater structure according to claim 1 or 2, wherein,

4. The heater structure according to any one of claims 1 to 3,

5. The heater structure of claim 4,

6. A heating conditioner comprising the heater structure according to any one of claims 1 to 5.

7. The heating conditioner according to claim 6, comprising:

an outer housing; and

an inner case housed in the outer case;

the outer case has a side wall having a first opening,

8. The heating conditioner according to claim 6, comprising:

an outer housing;

an inner case housed in the outer case; and

a shaft member;

the outer case has a side wall having a first opening,

9. A heated conditioner according to claim 8 further provided with a second resilient member,

the second elastic member biases the connector unit toward the outer housing.

10. A heating conditioner according to any one of claims 6 to 9, further provided with a reflecting member,

11. The heating conditioner of any one of claims 6 to 10, further provided with a heater cover,

the heater cover prevents dirt from adhering to the heater unit.