JPH08224175A - Cooking hot plate - Google Patents

Abstract

PURPOSE: To improve safety and durability of an electrode in a hot plate body. CONSTITUTION: A cooking plate 1 is used as a heat generator having an electrode 15. A movable electrode 32 is disposed in a hot plate body 2, the electrode being switchable between a protrusion attitude in contact with the electrode 15 being protruded from a hot plate body 2 and a housing attitude housed in the hot plate body 2. When the cooking plate 1 is mounted, a flange 12 on the cooking plate 1 contacts with an operating unit 33, which switches the movable electrode 32 from the housed attitude to the protruded attitude. The movable electrode 32, a fixed electrode 31, and the electrode 15 come in contact, allowing the current to flow.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot plate for domestic or commercial cooking, which has a removable cooking plate.

[0002]

2. Description of the Related Art A conventional cooking hot plate is disclosed in Japanese Patent Laid-Open No. 3-136620.
There is a hot plate body provided with a recess for mounting a cooking plate, and there is one in which the cooking plate is placed on a sheathed heater fixed to the recess for heating, and this type has been the mainstream.

However, in this type of hot plate for cooking, since the cooking plate is heated mainly by the radiant heat of the sheathed heater, the heat distribution on the surface of the cooking plate is non-uniform, the thermal efficiency is poor, and further the hot plate body is Since the sheathed heater is fixed, the cleanability of the hot plate body side was poor.

Therefore, in recent years, by heating the cooking plate itself by energizing the conductive cooking plate, or by attaching a heating element to the back side of the cooking plate to generate heat, the heat efficiency is improved and the sheath heater is eliminated. A hot plate for cooking with improved cleanability has been proposed.

[0005]

However, in the hot plate for cooking in which the cooking plate generates heat, the electrode contacting the electrode part on the cooking plate side is fixed to the hot plate body side and the cooking plate is fixed. Touching the energized electrode when not attached could result in electric shock and was extremely dangerous. In addition, if the electrodes are exposed, foreign matter such as water or dust is likely to adhere to the electrodes, and rusting or deterioration prevents good power supply to the electrode parts of the cooking plate, resulting in a problem that the life is shortened. .

In view of the above, an object of the present invention is to provide a hot plate for cooking which can improve the safety and durability of the electrode portion on the hot plate body side.

[0007]

As shown in FIG. 1, the cooking plate 1 is a heating element having an electrode portion 15, and a hot plate body 2 is provided with a hot plate body 2 and a hot plate body 2 from the hot plate body 2. The movable electrode 32 that can be switched between a protruding position that projects and contacts the electrode portion 15 and a storage position that is housed in the hot plate body 2, and a movable electrode that contacts the cooking plate 1 when the cooking plate 1 is mounted. And an actuating body 33 for switching 32 from the stored posture to the projected posture.

In the means for solving the problem according to the second aspect of the invention, as shown in FIG. 14, the operating member 55 is housed in the hot plate body 51, and the cooking plate 50 is provided with the projection 5 for operating the operating member 55.
2a is provided.

In the means for solving the problem according to the third aspect of the present invention, as shown in FIG. It is provided.

As shown in FIG. 15, the problem solving means according to the invention of claim 4 is provided with an engaging portion for engaging the cooking plate 1 with the hot plate body 2, and the engaging portion is formed on the cooking plate 1. The flange 12 and a recess 25 formed in the hot plate body 2 into which the flange 12 fits are formed.
A fixed electrode 70 that is in contact with the electrode portion 15 of the cooking plate 1 is provided in the switch member 74, and the switch member 74 is switchable between an energized posture that allows energization to the fixed electrode 70 and a shutoff posture that interrupts energization. Is provided.

[0011]

When the cooking plate 1 is mounted on the hot plate main body 2 in the means for solving the problem according to the invention of claim 1, the cooking plate 1 abuts the actuating body 33 and the movable electrode 32 is housed, as shown in FIG. The posture is switched to the projecting posture, and the movable electrode 32 and the electrode portion 15 of the cooking plate 1 come into contact with each other to be in an energizable state. Further, when the cooking plate 1 is removed from the hot plate body 2, as shown in FIG. 4, the actuating body 33 returns to its original state, and the movable electrode 32 is switched from the projecting posture to the storing posture to project from the hot plate body 2. Therefore, the hand and the object do not touch the movable electrode 32.

In the means for solving problems according to the second aspect of the present invention, since the operating body 55 is housed in the hot plate body 51, the operating body 55 cannot be easily operated from the outside. When the cooking plate 50 is attached to the hot plate body 51, the projection 52a of the cooking plate 50 operates the actuating body 55, and the movable electrode 32 is switched from the stored posture to the projected posture to be in a state in which electricity can be supplied.

In the problem solving means according to the third aspect of the present invention, as shown in FIG. 7B, when the movable electrode 32 protrudes from the retracting opening 40 and is in the projecting posture, the opening / closing door 41 is opened, and as shown in FIG. As shown in a), when the movable electrode 32 returns to the inside of the hot plate body 2, the opening / closing door 41 is closed to prevent foreign matter such as moisture and dust from entering.

When the cooking plate 1 is mounted on the hot plate body 2 in the means for solving problems according to the invention of claim 4, the flange 12 of the cooking plate 1 fits into the recess 25 of the hot plate body 2 as shown in FIG. Then, the electrode portion 15 of the cooking plate 1 comes into contact with the fixed electrode 70, and the switch member 74 is switched from the blocking posture to the conducting posture to be in the conducting state.
When the cooking plate 1 is removed from the hot plate body 2, the switch member 74 is switched from the energized posture to the shut-off posture as shown in FIG. 15, and even if the fixed electrode 70 is touched, there is no electric shock.

[0015]

【Example】

(First Embodiment) As shown in FIG. 2, a cooking hot plate according to a first embodiment of the present invention comprises a cooking plate 1 on which food is placed and heated, and a hot plate on which the cooking plate 1 is detachably mounted. The plate main body 2, a lid 3 that covers the cooking plate 1, and a power plug cord 5 that can be attached to and detached from the connector 4 of the hot plate main body 2 are provided. In FIG. 2, 6 is an operation panel provided on the hot plate body 2, and 7 is a leg that supports the hot plate body 2. The side on which the operation panel 6 is located is the front side.

The cooking plate 1, as shown in FIGS.
The rectangular bottom portion 10 and the peripheral walls 11a and 11b provided upright from the outer peripheral edge of the bottom portion 10 are integrally formed of a non-conductive material such as non-conductive ceramics. The front and rear peripheral walls 11a of the cooking plate 1 are provided with flanges 12 that engage with the hot plate body 2 in the left-right direction.

The surface of the bottom portion 10 of the cooking plate 1 and the peripheral wall 11
A protective layer 13 coated with a fluororesin or the like is formed on the surfaces (a food contact surface) of a and 11b so that the food or the like does not scorched and sticks to improve the releasability of the food.

On the back surface of the bottom portion 10 of the cooking plate 1, a sheet-shaped heating element 14 is formed by applying a conductive material whose resistance value is adjusted so as to become a heating portion. As shown in FIG. 3, a pair of U-shaped electrode portions 15 reaching the both flanges 12 are formed in a strip shape near the left and right ends of the sheet heating element 14 by applying a low resistance conductive material. . Furthermore, the entire back surface (including the flange 12) of the cooking plate 1 is made of a non-conductive ceramic material or the like except for the front end portion of each electrode portion 15 (the portion where the electrode on the hot plate body 2 side described later contacts). Insulation layer 1 coated with a conductive material to insulate live parts
6 is formed.

As shown in FIGS. 1 and 2, the hot plate main body 2 is formed in a rectangular box shape, and the first main body 20 for supporting the cooking plate 1 and the second main body 2 in which the electric components 21 are concentrated.
2, and the first main body 20 and the second main body 22 are detachably divided into two parts.

The first main body 20 constitutes most of the hot plate main body 2, and vertical walls 23a and 23b are erected on three sides except the front side, and the cooking plate 1 is provided in a space surrounded by the vertical walls 23a and 23b. Is installed. And, on the rear vertical wall 23a,
A recess 24 into which the flange 12 of the cooking plate 1 is fitted is formed in the left-right direction.

The second main body 22 has a front upper surface slightly inclined downward to the front side, and the operation panel 6 for operating the electrical equipment section 21 is arranged in this inclined portion. Further, a concave portion 25 into which the flange 12 of the cooking plate 1 is fitted is formed in the left and right direction on the rear end surface of the second main body 22, and the flange 12 of the cooking plate 1 and the concave portion 24 of the first main body 20 are formed.
The engaging portion for engaging the cooking plate 1 and the hot plate 2 is constituted by the recess 25 of the second body 22, and the engagement groove of the first body 20 and the engagement of the second body 22 (not shown) are formed by the push button 26. The engagement with the dowel is released. The upper part of the concave portion 25 is covered by the upper surface portion of the second main body 22, and the open portion has only to be wide enough to allow the flange 12 to pass therethrough, so that fingers, foreign matter and the like cannot easily enter. .

The electrical component section 21 has a hot plate body 2 only when the cooking plate 1 is mounted on the hot plate body 2.
An energization control mechanism 30 is provided that causes an electrode portion that comes into contact with the electrode portion 15 of the cooking plate 1 to project from the inside so as to be in an energizable state.

As shown in FIG. 1, the energization control mechanism 30 has a pair of left and right fixed electrodes 31, and a projecting attitude that projects from the second main body 22 and comes into contact with the respective electrode portions 15 and the fixed electrodes 31 of the cooking plate 1. And the electrode part 1 that fits inside the second body 22
5 and the fixed electrode 31 and the pair of movable electrodes 32 which can be switched between the storage positions in which the fixed electrode 31 and the fixed electrode 31 are not in contact with each other, and the flange 12 of the cooking plate 1 is fitted into the recess 25 of the second main body 22 (the cooking plate. 1 when the movable electrode 32 is brought into contact with the cooking plate 1 to switch the movable electrode 32 from the stored posture to the projected posture.

The fixed electrode 31 is composed of an electrode plate attached to the lower surface of the second main body 22 via an insulator, has a contact portion 31a formed in a bent shape at its end, and is connected to the operation panel 6. There is.

Each movable electrode 32 passes through a fan-shaped first rotating rib 35 arranged in the second main body 22 and passes through the first rotating rib 3.
5 is composed of electrode plates arranged along the front and back surfaces, and the contact portion 32a formed by bending the end portion on the front surface side comes into contact with the electrode portion 15 of the cooking plate 1 in the protruding posture, and the end portion on the rear surface side is formed. Are arranged so as to contact the contact portion 31a of the fixed electrode 31.

The pair of left and right first rotating ribs 35 are fixed to a pair of left and right vertical axes 37 rotatably supported by upper and lower bearings 36 in the second main body 22 and are horizontally rotatable.
As shown in FIG. 6, a connecting rod 38 is rotatably supported between the first rotary ribs 35 so that the first rotary ribs 35 rotate in conjunction with each other. In addition, the second body 22
A return spring 39 for urging the first rotating rib 35 in the housing posture direction of the movable electrode 32 is interposed between the first rotating rib 35 and each of the first rotating ribs 35.

Further, the recess 25 of the second main body 22 is formed with openings through which the respective first rotating ribs 35 can be inserted, that is, openings 40 for retracting and retracting the respective movable electrodes 32, and the rotation of each first rotating rib 35. That is, a pair of left and right open / close doors 41 for preventing foreign matter intrusion that open / close each retractable opening 40 in association with the attitude switching operation of each movable electrode 32 are provided. This door 4
As shown in FIG. 7, the reference numeral 1 denotes an L-shaped opening / closing door 4
The horizontal shaft 43 of No. 1 is rotatably supported by the left and right bearings 42 in the second main body 22, and the opening 40 for retracting the first rotating rib 35.
A protruding piece 41a is formed corresponding to the protrusion 35a formed on the lower surface of the end portion on the side. Then, the opening / closing door 41 abuts on and opens the first rotating rib 35 protruding from the retracting opening 40, and returns to the inside of the second main body 22 by the protrusion 3 of the first rotating rib 35.
The projecting piece 41a is in contact with the 5a to be closed. The spring may be urged in the closing direction, but by doing so, a mechanism for opening and closing the retractable opening 40 can be made a simple structure without requiring an attached member such as a spring. .

The actuating body 33 is composed of a fan-shaped second rotary rib which is fixed to one of the left and right vertical axes 37 above the first rotary rib 35 and is horizontally rotatable. The recess 25 has an opening 40 for retracting the movable electrode 32.
A projecting / withdrawing opening 50 (see FIGS. 4 and 5) of the second rotating rib 33 is formed above. This second rotating rib 33
Are held in a state of protruding from the retracting opening 50 by the biasing force of the return spring 39.

In the above structure, when the hot plate for cooking is assembled, first, the cooking plate 1 is slid slightly from the front side to the rear side of the first main body 20 regardless of the front-back direction. The flange 12 is the first main body 20
The cooking plate 1 is fitted into the recess 24 of the first main body 20.

Next, as shown in FIGS. 1, 4 and 5, the first body 1 on which the cooking plate 1 is mounted by engaging the flange 12 on the other side of the cooking plate 1 with the recess 25 of the second body 22. 20 and the 2nd main body 22 are united. At this time, the second rotary rib 3 in which the flange 12 on the other side of the cooking plate 1 protrudes from the retracting opening 50.
3, the second rotary rib 33 rotates horizontally, and the first rotary rib 35 on one side horizontally rotates against the urging force of the return spring 39 via the vertical axis 37, and at the same time the other rotates via the connecting rod 38. The first rotation rib 35 of No. 1 horizontally rotates. Then, as the flange 12 of the cooking plate 1 pushes in the second rotary rib 33, each first rotary rib 35 pushes the opening / closing door 41 to open it, and protrudes from the retractable opening 40, so that the flange 12 is completely fitted in the recess 25. As shown in FIG. 1, each movable electrode 32 is in a projecting posture when it fits in, the front surface side contact portion 32a contacts the electrode portion 15 of the cooking plate 1, and the rear surface side end portion thereof is the contact portion of the fixed electrode 31. It comes into contact with 31a and becomes energizable for the first time.

On the other hand, the push button 26 of the second main body 22 is pushed to release the engagement between the first main body 20 and the second main body 22,
When the flange 12 of the cooking plate 1 is removed from the recess 25 of the second body 22, the second rotating rib 33 projects from the retracting opening 50 by the biasing force of the return spring 39, and each first rotating rib 35 causes the second rotating rib 35 to move. Returning to the inside, each movable electrode 32 is placed in the accommodated posture, separated from the fixed electrode 31, and the energization is cut off. At this time, as shown in FIG. 7C, the protruding piece 41a of the opening / closing door 41 is caught by the projection 35a of the first rotating rib 35, and the left and right opening / closing doors 41 are closed.

As described above, when the cooking plate 1 is attached to the hot plate body 2, the movable electrode 32 on the hot plate body 2 side projects from the hot plate body 2 and the cooking plate 1
When the cooking plate 1 is not attached to the hot plate body 2, the movable electrode 32 is housed in the hot plate body 2 and the movable electrode 32 is energized when the cooking plate 1 is not attached to the hot plate body 2. Is cut off, there is no risk that the movable electrode 32 is touched by the hand when the cooking plate 1 is not attached and there is no risk of electric shock, and the safety is improved, and foreign matter such as moisture or dust adheres to the movable electrode 32. It is difficult to do so, and the durability of the electrode part can be improved by preventing rust and deterioration.

Moreover, since the movable electrode 32 on the hot plate body 2 side can be energized only at the position where it comes into contact with the electrode portion 15 of the cooking plate 1, that is, when it is in the protruding posture, the movable electrode 32 is hot due to dust clogging or the like. If the plate body 2 does not completely project from the inside, the hot plate body 2 side is not energized to the cooking plate 1 side, and safety during use is improved.

Further, since the pair of left and right first rotary ribs 35 are linked and interlocked with each other by the connecting rod 38, one of the second rotary ribs 33 can be eliminated and the structure can be simplified. The posture switching operation of the electrode 32 can be stably performed without variation.

Further, since the opening / closing door 41 for opening / closing the retractable opening 40 of the movable electrode 32 is provided in association with the attitude switching operation of the movable electrode 32, foreign matter such as moisture or dust from the retractable opening 40 is provided. Invasion can be prevented, and the durability of the electrode portion can be further improved.

Further, the hot plate body 2 is replaced with the first body 2
0 and the second body 22 are divided into two parts, and by using the cooking plate 1, the first body 20 and the second body 22 in combination, four sides of the cooking plate 1 are enclosed and the flange 12 of the hot plate body 2 is surrounded. Since the cooking plate 1 is fitted and fixed in the concave portions 24 and 25, the cooking plate 1 does not become unstable, such as rattling, moving, or rising. Therefore, even if the hot plate body 2 is moved during use, the heated cooking plate 1 does not come off from the hot plate body 2, thus improving safety during use. Moreover, since the cooking plate 1 is fixed to the hot plate body 2, the electrode portion 15 of the cooking plate 1 and the movable electrode 32 of the hot plate body 2 are fixed.
There is no interruption in electricity, because the tongue does not arrive or leave.

Further, since the cooking plate 1 is used as a heating element, the electric component portion 21 can be concentrated on the second main body 22, and the first main body 20 only has to support the cooking plate 1, so that the hot plate main body can be supported. It is possible to clarify the function sharing of the two, and to wash the first main body 20 that is easily soiled. For this reason, it is possible to realize a hot plate that is convenient and hygienic for the user.

(Second Embodiment) As shown in FIG. 8, the cooking hot plate of the second embodiment is of a type in which the cooking plate 50 is placed on the hot plate main body 51 from above, and the cooking plate 50 A flange 52 is formed on an upper portion of a peripheral wall of the hot plate main body 51, and a recess 53 into which the cooking plate 50 is fitted is formed in a central portion of the hot plate body 51.

FIG. 9 shows the structure of the cooking plate 50. As in the first embodiment, the surface of the bottom and the surface of the peripheral wall (contact surface of the food) are coated with a protective resin 13, a conductive material, and the like. The applied sheet heating element 14, L-shaped electrode portion 1
5, an insulating layer 16 coated with a non-conductive material is provided except the front end of each electrode portion 15.

Further, as shown in FIGS.
An opening 54 for projecting and retracting the movable electrode 32 is formed at a front corner of the recess 53 of the hot plate body 51.
The movable electrode 32 is configured to project near the bottom of the recess 53.

Further, the second rotary rib (actuator) 55 is
The second rotary rib 55 is fixed to a horizontal shaft 57 rotatably supported by front and rear bearings 56 in the hot plate body 51, and at a position where the flange 52 of the cooking plate 50 is placed on the front side of the upper surface of the hot plate body 51. An opening / closing opening 60 is formed. The second rotating rib 55 is held in a state of coming into contact with the side surface of the first rotating rib 35 biased by the return spring 39 and protruding from the retracting opening 60.

When the cooking plate 50 is placed on the hot plate body 51, the flange 52 of the cooking plate 50 pushes the second rotary rib 55 downward, and the second rotary rib 55 rotates, as shown in FIG. Then, the first rotating rib 35 is pushed, and the first rotating rib 35 projects from the retracting opening 54. 12
As shown in FIG. 5, the movable electrode 32 is switched from the storage posture to the protruding posture to change the electrode portion 15 and the fixed electrode 31 of the cooking plate 50.
, And it becomes possible to energize. On the other hand, when the cooking plate 50 is removed from the hot plate body 51, the return spring 39
The first rotating rib 35 returns to the inside of the hot plate main body 51 by the urging force of the second rotating rib 55, and the second rotating rib 55 is pushed and protrudes from the retracting opening 60, whereby the movable electrode 32 is in the storage posture and touches hands and objects. And the power is cut off. The other configurations and operations are the same as those in the first embodiment, and the members having the same functions as those in the first embodiment are designated by the same reference numerals.

Therefore, the cooking plate 50 is not limited to the type in which the cooking plate is mounted horizontally with respect to the hot plate main body as in the first embodiment, but the cooking plate 50 is attached to the hot plate main body 51.
On the other hand, even in the type that is placed from above, when the cooking plate 50 is not attached to the hot plate body 51, the movable electrode 32 is housed in the hot plate body 51, and It is possible to realize a structure that cuts off energization, and it is possible to improve safety and durability of the electrode portion.

(Third Embodiment) In the cooking hot plates of the first and second embodiments, the second rotating rib (actuator) for switching the posture of the movable electrode is held in a state of protruding from the hot plate body. Therefore, when the second rotary rib is pushed in with a hand or an object, the movable electrode is exposed in a projecting posture and becomes energizable, which may result in electric shock or deterioration of the electrode portion.

Therefore, in the cooking hot plate of the third embodiment, as shown in FIGS. 13 and 14, the second rotary rib (actuator) 55 is housed in the hot plate body 51, and the flange 52 of the cooking plate 50 is accommodated. A projection 52a for pushing the second rotary rib 55 is formed on the lower surface of the hot plate body 51, and a slit 51a into which the projection 52a of the cooking plate 51 enters is formed above the second rotary rib 55 on the front side of the upper surface of the hot plate body 51. There is.

Then, when the cooking plate 50 is placed on the hot plate body 51, as shown in FIG. 14, the projection 52a of the cooking plate 50 is fitted into the slit 51a and the second rotary rib 5 is inserted.
5 is pushed downward, the second rotary rib 55 is rotated to push the first rotary rib 35, and the first rotary rib 35 is pushed in and out.
4 and the movable electrode 32 is switched from the housed posture to the projected posture so that the electrode portion 15 of the cooking plate 50 and the fixed electrode 31
It comes into contact with and becomes energizable. On the other hand, when the cooking plate 50 is detached from the hot plate main body 51, the first rotating rib 35 returns to the inside of the hot plate main body 51 by the urging force of the return spring 39, whereby the movable electrode 32 is placed in the storage posture, and the hand or the object. It will not touch and the power will be cut off. The other configurations and operations are the same as those in the second embodiment, and the members having the same functions as those in the second embodiment are designated by the same reference numerals.

As described above, the second rotary rib 55 is housed in the hot plate body 51, and the cooking plate 50 is mounted on the hot plate body 51 to allow the projection 52a of the cooking plate 50 to be attached.
The movable electrode 32 unless the second rotating rib 55 is pushed in.
Does not have a protruding posture, it is possible to prevent the movable electrode 32 from having a protruding posture with a hand or an object, and it is possible to reliably prevent electric shock and deterioration of the electrode portion.

(Fourth Embodiment) In the hot plates for cooking of the first to third embodiments, the second rotary rib is pushed by the cooking plate to rotate the first rotary rib,
Since the structure is such that the fixed electrode on the hot plate body side and the electrode part of the cooking plate are connected via the movable electrode, the number of parts is large and there is a concern in connecting the electrode part.

Therefore, in the cooking hot plate of the fourth embodiment, as shown in FIGS. 15, 16, and 17, the pair of left and right fixed electrodes on the hot plate body 2 side is attached by mounting the cooking plate 1 on the hot plate body 2. 70 and the pair of electrode portions 15 of the cooking plate 1 are directly connected to each other, and the fixed electrode 70 can be energized only when the cooking plate 1 is attached.

The fixed electrode 70 is arranged in the second body 22 of the hot plate body 2, and the contact portion 71 at the tip thereof is arranged so as to project from the inside of the second body 22 into the recess 25. Then, in the second main body 22, the first electrode terminals 72 connected to the fixed electrodes 70, the second electrode terminals 73 connected to the electrical equipment section 21, and the first electrode terminals 7 when the cooking plate 1 is attached.
2 and the switch member 74 which is switchable between an energizing posture in which the fixed electrode 70 can be energized by contacting the second electrode terminal 73 and a shut-off posture in which the energization is shut off when the cooking plate 1 is not attached. Is provided.

The switch member 74 is formed in a fan shape and is fixed to a pair of left and right vertical shafts 76 rotatably supported by upper and lower bearings 75 in the second main body 22 so as to be horizontally rotatable. A connection terminal 77 capable of simultaneously contacting the first electrode terminal 72 and the second electrode terminal 73 is arranged on the lower surface. Further, an opening 78 for retracting the switch member 74 is formed in the recess 25 of the second main body 22, and the switch member 74 has a return spring 79 interposed between the second main body 22 and the switch member 74. It is held in a state of protruding from the retracting opening 78 by the urging force of.

Then, as shown in FIG. 16, the second main body 2
When the flange 12 of the cooking plate 1 is engaged with the concave portion 25 of the second plate 2, the flange 12 pushes the switch member 74 protruding from the retracting opening 78, and the switch member 74 is horizontally supported against the urging force of the return spring 79. Rotate. When the flange 12 is completely fitted into the recess 25, as shown in FIG. 17, the switch member 74 is in the energized posture, and the connection terminal 77 simultaneously contacts the first electrode terminal 72 and the second electrode terminal 73. It becomes possible to energize for the first time.

On the other hand, when the flange 12 of the cooking plate 1 is removed from the recess 25 of the second main body 22, the urging force of the return spring 79 causes the switch member 74 to project from the retracting opening 78. At this time, the switch member 74 is in the blocking posture,
The connection terminal 77 is the first electrode terminal 72 and the second electrode terminal 7.
3, the fixed electrode 70 is de-energized, and the power supply to the fixed electrode 70 is cut off. Other configurations and operations are the same as those in the first embodiment, and members having the same functions as those in the first embodiment are designated by the same reference numerals.

As described above, the electrode portion on the side of the hot plate body 2 that contacts the electrode portion 15 of the cooking plate 1 is fixed so that the fixed electrode 70 can be energized only when the cooking plate 1 is attached. The safety can be ensured with a simple structure having a small number of parts, the reliability in the electrical connection between the cooking plate 1 side and the hot plate body 2 side is improved, and the cost can be reduced. In addition, the fixed electrode 70
Is disposed in the recess 25 of the hot plate body 2, so that the possibility that a hand or an object touches the fixed electrode 70 is reduced, and foreign matter such as dust is unlikely to adhere to the fixed electrode 70.
The durability of the electrode portion can be improved.

The present invention is not limited to the above embodiments, and it goes without saying that many modifications and changes can be made to the above embodiments within the scope of the present invention. For example, in the above embodiment, the bottom surface of the cooking plate is coated with a conductive material to form a planar heating element, but the cooking plate itself may be formed of a conductive material to form the entire cooking plate as a heating element.

Further, the second rotary rib and the switch member of the first and fourth embodiments are housed in the hot plate body, and the second rotary rib and the switch member are operated by the projection provided on the flange of the cooking plate. Then, it is possible to prevent the second rotary rib and the switch member from being pushed by a hand or an object to be in a state in which electricity can be supplied.

[0057]

As is apparent from the above description, claim 1
According to the invention, when the cooking plate is attached to the hot plate main body, the movable electrode on the hot plate main body side protrudes from the hot plate main body and switches from the storage posture to the protruding posture to contact the electrode portion of the cooking plate. When the cooking plate is not attached to the hot plate body, the movable electrode is housed inside the hot plate body, and there is no risk of electric shock due to touching the movable electrode, improving safety and preventing moisture from moving on the movable electrode. It is possible to prevent foreign matter such as dust and dirt from adhering, prevent rusting and deterioration, and improve the durability of the electrode portion on the hot plate body side.

Moreover, when the movable electrode does not completely project from the inside of the hot plate body due to clogging of dust or the like, the hot plate body side is not energized to the cooking plate side,
The safety during use can be improved.

According to the second aspect of the present invention, the operating body is housed in the hot plate body, and the movable electrode is in the projecting position unless the cooking plate is mounted on the hot plate body and the operating body is operated by the projection of the cooking plate. Therefore, it is not possible to operate the actuating body with a hand or an object, it is possible to prevent the movable electrode from being in a protruding posture when not in use, and it is possible to reliably prevent electric shock and deterioration of the electrode portion.

According to the third aspect of the present invention, since the opening / closing door for opening / closing the opening / closing opening of the movable electrode is provided in association with the attitude switching operation of the movable electrode, foreign matter such as water or dust from the opening / closing opening. Can be prevented, and the durability of the electrode portion can be further improved.

According to the fourth aspect of the present invention, the electrode portion on the hot plate body side that contacts the electrode portion of the cooking plate is fixed so that the fixed electrode can be energized only when the cooking plate is attached. Safety can be ensured with a simple structure having a small number of parts, the reliability in electrical connection between the cooking plate side and the hot plate body side is improved, and the cost can be reduced. In addition, since the fixed electrode is provided in the concave portion of the hot plate body, it is less likely that a hand or an object will come into contact with the fixed electrode, and foreign matter such as moisture or dust is unlikely to adhere to the fixed electrode, which improves safety and safety. The durability of the electrode portion can be improved.

[Brief description of drawings]

FIG. 1 is a diagram showing a state where a movable electrode is in a protruding posture in a cooking hot plate according to a first embodiment of the present invention,
(A) is a plan view sectional view of an electrode part, (b) is a side sectional view of a hot plate for cooking

FIG. 2 is an exploded perspective view of a hot plate for cooking.

3A and 3B are views showing a cooking plate, where FIG. 3A is a sectional view and FIG. 3B is a bottom view.

FIG. 4 is a diagram showing a state in which the movable electrode is in a retracted posture,
(A) is a cross-sectional plan view of an electrode portion, and (b) is a cross-sectional side view of a main part of a hot plate for cooking.

5A and 5B are views showing a state in which the movable electrode is changing the posture, in which FIG. 5A is a cross-sectional plan view of an electrode portion, and FIG.

FIG. 6 is a diagram showing a connecting rod.

FIG. 7 is an operation explanatory view of the opening / closing door, (a) shows the opening / closing door closed, (b) shows the opening / closing door open,
(C) is when the door is closed by the rotation of the first rotating rib

FIG. 8 is an exploded perspective view of a cooking hot plate according to a second embodiment.

9A and 9B are views showing a cooking plate, where FIG. 9A is a sectional view and FIG. 9B is a bottom view.

10A and 10B are diagrams showing a state in which the movable electrode is in a storage posture, in which FIG. 10A is a cross-sectional plan view of the electrode portion, FIG. 10B is a front sectional view of the electrode portion, and FIG. 10C is a hot plate for cooking. Side sectional view of the main part of

11A and 11B are diagrams showing a state in which the movable electrode is performing posture switching, in which FIG. 11A is a cross-sectional plan view of the electrode portion, and FIG.
Is a front sectional view of the electrode portion, and (c) is a side sectional view of the main part of the hot plate for cooking.

12A and 12B are views showing a state in which the movable electrode is in a protruding posture, in which FIG. 12A is a cross-sectional plan view of the electrode portion, FIG. 12B is a front sectional view of the electrode portion, and FIG. 12C is a hot plate for cooking. Side sectional view of the main part of

FIG. 13 is an exploded perspective view of a cooking hot plate according to a third embodiment.

14A and 14B are diagrams showing a state in which the movable electrode is in a storage posture, in which FIG. 14A is a cross-sectional plan view of the electrode portion, FIG. 14B is a front sectional view of the electrode portion, and FIG. 14C is a hot plate for cooking. Side sectional view of the main part of

FIG. 15 is a view showing a state when the switch member is in the blocking posture in the cooking hot plate of the fourth embodiment,
(A) is a plan view sectional view of an electrode part, (b) is a side sectional view of a hot plate for cooking

FIG. 16 is a view showing a state in which the switch member is changing the posture, (a) is a plan view cross-sectional view of an electrode portion,
(B) is a cross-sectional view of the main part of the hot plate for cooking.

17A and 17B are diagrams showing a state in which the switch member is in the energized posture, in which FIG. 17A is a plan view cross-sectional view of the electrode portion, and FIG.

[Explanation of symbols]

 1,50 Cooking plate 2,51 Hot plate main body 12 Flange 15 Electrode portion 25 Recessed portion 32 Movable electrode 33,55 Actuator 40 Opening / closing opening 41 Opening / closing door 52a Protrusion 70 Fixed electrode 74 Switch member

Claims (4)

[Claims] 1. A hot plate for cooking, comprising a cooking plate for placing and heating a cooking product, and a hot plate body for detachably mounting the cooking plate, wherein the cooking plate has an electrode portion. And the hot plate body,
A movable electrode that is switchable between a projecting posture that projects from the hot plate main body and comes into contact with the electrode portion and a storage posture that is housed in the hot plate main body; A hot plate for cooking, comprising: an operating body that switches the movable electrode from a stored posture to a projected posture. 2. The hot plate for cooking according to claim 1, wherein the operating body is housed in the hot plate body, and the cooking plate is provided with a protrusion for operating the operating body. 3. The cooking apparatus according to claim 1, further comprising an opening / closing door for preventing foreign matter intrusion that opens / closes the projecting / retracting opening of the movable electrode in association with a posture switching operation of the movable electrode. Hot plate. 4. A hot plate for cooking, comprising a cooking plate on which cooking is placed and heated, and a hot plate body to which the cooking plate is detachably mounted, wherein the cooking plate has an electrode portion. And an engaging portion for engaging the cooking plate with the hot plate body is provided, and the engaging portion is
A flange formed on the cooking plate and a recess formed on the hot plate body into which the flange fits are provided with a fixed electrode that is in contact with the electrode portion, and the fixed electrode is energized. A switch member is provided that is switchable between an energizing posture that enables the energization and a disconnecting posture that shuts off the energization. The switch member comes into contact with the flange when the cooking plate is mounted and switches from the intercepting posture to the energizing posture. A hot plate for cooking characterized by being replaced.