JP3025620B2 - Hot plate for cooking - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooking hot plate for use in home and commercial electric cookers.

[0002]

2. Description of the Related Art In home and commercial electric cookers,
There is a cooking hot plate for cooking by heating a cooking plate from below with a heating element. A conventional hot plate includes a cooking plate, a heating element, and a main body on which the heating element is placed. The main body is provided with a concave portion for placing a cooking plate,
A sheath heater, which is a heating element for heating the cooking plate, is attached to the bottom of the recess. A cooking plate is placed directly on top of it and heated.

[0003]

However, the hot plate having such a structure has a drawback that the stability in the concave portion of the main body is poor because the cooking plate is simply placed on the concave portion of the main body. Further, since the main body portion is formed including the electrical components, it is not possible to remove dirt attached during cooking by washing in a round manner, which is troublesome. Furthermore, in the conventional hot plate, the cooking plate is heated mainly by radiant heat of the sheathed heater, so that there is a problem that the efficiency is not good.

An object of the present invention is to solve such a problem, and the cooking plate has good stability.
An object of the present invention is to provide a cooking hot plate that can easily remove dirt from a main body portion and has improved heating efficiency of a cooking plate.

[0005]

The invention according to claim 1 is a cooking hot plate comprising a cooking plate, a heating element for heating the cooking plate, and a main body having a concave portion for placing and mounting the heating plate. The cooking plate is provided with a flange at opposite edges thereof, and the main body is divided into two parts, one of which is a first main body in which the electric parts are concentrated, and the other is a second main body which does not include the electric parts. As a part, both body parts are openably and closably connected by a hinge, a groove for fitting a flange part of a cooking plate is formed on an inner wall of a concave part of the first body part, and a cooking part is formed on an inner wall of a concave part of the second body part. A groove into which the flange portion of the plate is fitted is formed, and the cooking plate is held by the two main body portions so that both flange portions of the cooking plate fit into the grooves of the first main body portion and the second main body portion. It is characterized by being clamped and fixed.

According to a second aspect of the present invention, there is provided the hot plate for cooking according to the first aspect, wherein the hot plate has a hinge structure in which both body portions are detachable.

According to a third aspect of the present invention, there is provided the cooking hot plate according to the first or second aspect, wherein a hooking claw is provided on one main body and a hooking recess is provided on the other main body. The two main body parts are closed and fixed by fitting into the hooking concave part.

According to a fourth aspect of the present invention, there is provided the cooking hot plate according to the third aspect, wherein a sensor for detecting the position of the hook is provided, and the hook is fitted into the hook recess by a detection signal of the sensor. And a control unit for confirming that they have been combined and supplying power to the cooking plate.

According to a fifth aspect of the present invention, there is provided the cooking hot plate according to the first aspect, wherein both body portions are urged in a closing direction by an elastic body.

According to a sixth aspect of the present invention, there is provided the cooking hot plate according to the fifth aspect, wherein the cooking hot plate has a structure for lifting the cooking plate from the main body.

The invention of claim 7 is the first, second, third and third aspects of the present invention.
7. The cooking hot plate according to 4, 5, or 6, wherein the cooking plate is formed by applying a conductive material as a heating element on the back surface, or by molding the conductive material, or by attaching a heating element to the back surface. It is characterized by the following.

[0012]

According to the cooking hot plate of the first aspect of the present invention, the cooking plate is provided with a flange portion at the opposite edge thereof, the main body is divided into two, and both the main body portions are openably and closably connected by hinges. I have. A groove is formed on the bottom side wall of the concave portion of the first main body to fit the flange of the cooking plate.
A groove is formed on the bottom side wall of the concave portion of the main body to fit the flange of the cooking plate. The first main body and the second main body are opened, and one flange of the cooking plate is fitted in, for example, a groove of the second main body, and the first main body is closed. At this time, the other flange of the cooking plate is fitted into the groove of the first main body. Thus, the cooking plate is sandwiched between the first main body and the second main body, and can be reliably positioned and fixed. Therefore, rattling of the cooking plate during use is eliminated, and power can be reliably supplied to the cooking plate having the heat generating portion.

Since the first main body has a structure in which the electrical components are concentrated and the second main body has a structure not including the electrical components, the first main body is assembled in a factory requiring technical capability during manufacturing and assembly.
The main unit can be assembled in a factory that does not require much technical skill.

According to the second aspect of the present invention, since the first main body and the second main body can be detached, the second main body not including the electrical component can be washed.

According to the third and fourth aspects of the present invention, the first main body and the second main body can be closed and fixed by fitting the hook claws into the hook recesses. It is possible to prevent accidents such as the first main body and the second main body opening suddenly and the cooking plate coming off. Claim 4
According to the invention, the control unit confirms that the hook claw is fitted into the hook recess by the detection signal of the sensor that detects the position of the hook claw, and energizes the cooking plate. After the second main body is closed and fixed, the cooking plate is heated. Therefore, it is possible to prevent an accident such as the first main body portion and the second main body portion being opened during cooking and the cooking plate popping out.

According to the fifth and sixth aspects of the present invention, since the two main bodies are urged in the closing direction by the elastic body, the first main body and the second main body are always closed.
For example, it is possible to prevent accidents such as the first main body and the second main body suddenly opening during cooking or the like and the cooking plate coming off. According to the fourth aspect of the present invention, since the cooking plate is lifted from the main body, the cooking device can be easily taken out even if the cooking plate is urged in the closing direction by the elastic body.

According to the seventh aspect of the present invention, since the cooking plate has a structure in which a conductive material as a heating element is applied to the back surface, or formed by using a conductive material, or a heating element is attached to the back surface. Heat the cooking plate directly. Therefore, compared with the method of heating the cooking plate by radiant heat, heat escape and leakage are less, and the heat efficiency is good.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing the embodiments. FIG. 1 is an exploded perspective view showing one embodiment of a cooking hot plate according to the present invention. The cooking hot plate in FIG. 1 includes a cooking plate 1 on which an object to be cooked is placed, a hot plate body 2 having a concave portion for placing the cooking plate 1, a lid 3 covering the cooking plate 1, a power cord. 4. The cooking plate 1 has flange portions 11a and 11b formed at opposite edges. The hot plate main body 2 is divided into a first main body 21 and a second main body 22. The first main body 21 and the second main body 22 are connected by a hinge 23 so as to be freely opened and closed in the horizontal direction. Grooves 21a, 22 into which the flange portions 11a, 11b of the cooking plate 1 are fitted are formed in the first main body 21 and the second main body 22, respectively.
a is formed.

As shown in FIG. 2, the cooking plate 1 is a substantially rectangular cooking plate main body 1 having a recess made of non-conductive ceramic.
1 is formed, and the concave side surface thereof is coated with a fluororesin 15 for improving the releasability of the object to be cooked. It is formed. Flange portion 11a,
11b is provided so as to protrude from the bottom of the opposing edge. Electrodes 13a and 13b are provided by applying a conductive material having a small resistance value on the heating element 12 in a vertical and band-like manner at both ends of the flanges 11a and 11b. The insulating material 1 is coated on the heating element portion 12 and the electrode portions 13a and 13b. However, a part of the electrode portions 13a and 13b on the flange portions 11a and 11b is exposed, and only the portions are not coated with the insulating material.

In this way, from the exposed portions of the electrode portions 13a and 13b, electricity is supplied to the heating element portion 12 applied to the back surface of the cooking plate main body 11, and the cooking plate main body 11 is directly heated.
Therefore, compared with the conventional method in which the cooking plate is heated by the radiant heat of the sheathed heater, heat escape and leakage are less, and the heat efficiency is good.

Next, FIG. 3 is a schematic perspective view of the hot plate body, and FIG. 4 is an explanatory view of the opening and closing operation of the hot plate body. FIG. 4A shows an open state, and FIG. 4B shows a closed state. The hot plate main body 2 is composed of two parts, a first main body part 21 containing electric parts such as an operation part and a control part, and a second main part 22 having no electric part. To fix the first main body 21 and the second main body 22, a hinge 2
An L-shaped hooking claw 24 is provided on the side surface of the first main body 21 facing 3. Further, a hooking recess 25 is provided on a side surface of the second main body 22 so that the hooking claw 24 fits when the first main body 21 is closed. The hook claw 24
A substantially central portion thereof is rotatably fixed by a pin. The hooking concave portion 25 is formed to have a deep portion where the L-shaped tip of the hooking claw 24 fits, and the other portions are formed to a depth approximately equal to the thickness of the hooking claw 24. A sensor having a stylus at an end opposite to the L-shaped tip is disposed in the first main body (FIG. 4).
reference).

In use, the first main body 21 is opened and the second main body 21 is opened.
The flange portion 11a of the cooking plate is provided in the concave portion 22a of the main body 22.
After being put on the second main body 22 while fitting the first
The main body 21 is closed. At this time, the other flange portion 11b of the cooking plate is in a state of being inserted into the concave portion 21a of the first main body 21, and in a state where the first main body 21 is closed,
The cooking plate cannot be pulled out upward and the hot plate body 2
In a fixed state.

When the first main body 21 and the second main body 22 are open, the hooking claw 24 is rotatable, and its end does not push the stylus of the sensor. First main body 2
When the first and second main body portions 22 are closed, the L-shaped tip of the hooking claw 24 is fitted into the hooking recess, and the end of the hooking claw 24 pushes the stylus of the sensor to switch. . Thus, it is detected that the first main body 21 and the second main body 22 are closed and fixed.

FIG. 5 is a schematic sectional view of a cooking hot plate. Electrodes 27a and 27b having a stylus are provided at a position on the first main body 21 side corresponding to the electrode of the flange portion 11b of the cooking plate 1. The styluses of the electrode portions 27a and 27b are connected to the electrodes 13a and 13 of the flange portion 11b.
b to come into contact with the exposed portion. Also, the first
A sensor 28 for detecting the presence or absence of a cooking plate having a stylus is provided in the groove 21a of the main body 21. First main body 2
When the cooking plate 1 is closed, the presence or absence of the cooking plate is detected by pushing the stylus of the sensor 28 by the flange portion 11b of the cooking plate 1.

Next, the operation of the cooking hot plate of this embodiment will be described. First, FIG. 6 shows a block diagram of this cooking hot plate. In the first main body 21,
Control unit 30, operation display unit 31, sensors 26, 28, 2
9, switch 32, current / voltage detector 33, electrode 27a,
An electric component portion 27b is accommodated therein, and electricity is supplied from a power plug. The cooking plate is placed on the second main body 22.

The operation of the control unit 30 will be described with reference to the flowchart shown in FIG. When the power is turned on, the control unit 30 determines whether the main units 21 and 22 are connected based on information from the sensor 26 (step 41). If not, the process returns to step 41. If they are connected, the process proceeds to step 42, where the presence or absence of the cooking plate 1 is determined based on the information from the sensor 28. If there is no cooking board, step 4
Return to 1. If there is a cooking plate, the process proceeds to step 43, where an operation such as temperature setting by the operation display unit 31 is performed. The start button is turned on, the switch 32 is closed, and the electrodes 13a and 13b of the cooking plate 1 are energized via the electrodes 27a and 27b (step 45). At this time, the current-voltage detector 3
3, the temperature of the cooking plate 1 is also detected by the sensor 29 at the same time as detecting the current voltage, and it is determined whether the temperature is equal to or higher than the set temperature (step 46). If the temperature is lower than the set temperature, the process returns to step 45 and the energization is continued. If the temperature is equal to or higher than the set temperature, the switch 32 is opened to stop energization (step 4).
6) Returning to step 46, it is determined whether the temperature of the cooking plate 1 is equal to or higher than the set temperature.

As described above, the two main body parts 2 are controlled by the respective sensors.
Only after confirming the connection between the two main bodies 21 and 22 can the electricity be supplied, so that accidents such as the sudden opening of the hot cooking plate 1 during the cooking and the popping out of the hot cooking plate 1 while the two main body parts 21 and 22 are incompletely connected can be prevented. , Safety is improved. Also, since it is not possible to turn on the power until the cooking plate 1 is completely set in both the main body portions 21 and 22, the cooking plate 1 can be connected to both the main body portions 21 and 22.
The user does not mistakenly recognize that the cooker has been completely set to 22 and does not start cooking despite insufficient power supply.

FIG. 8 is a schematic view showing a second embodiment of the cooking hot plate according to the present invention. This embodiment is characterized in that the hinge has a detachable structure, and FIG. 8 is a schematic view of the hinge part. The hinge portion of the first main body 51 has a structure in which a corner of the first main body 51 is cut into a rectangular parallelepiped, and a pin 53 and a first support 54 and a second support 55 supporting the pin 53 are attached thereto. It is. The first support 54 is a substantially rectangular parallelepiped provided beside the pin 53,
The pin 53 is joined to the first main body 51. The second support 55 has a flat plate shape, and its upper surface is joined to the upper surface of the first main body 51 so as to make one surface, and the upper end of the pin 53 is joined to the lower surface of the second support 55. The hinge part of the second main body part 52 includes a first insertion part 56 and a second insertion part 57 having a through hole into which the pin 53 is inserted. The first insertion portion 56 has an opening large enough to allow the first support 54 to pass therethrough, and when the first main body 51 and the second main body 52 are completely open, the first support 54 The opening is provided at the position where. From the upper surface of the second main body 52, the second support 55
The first insertion portion 56 is attached while leaving the thickness of the first insertion portion 56, and the second insertion member 57 is attached from the first insertion portion 56 while leaving the thickness of the first support 54.

FIGS. 9A to 9C show the first main body 51.
FIG. 9 is an explanatory diagram showing a procedure for attaching the to the second main body 52. For the sake of simplicity, a view from above with the second support 55 removed is used. FIG. 9A shows a state in which the first main body 51 and the second main body 52 are separated.
The first main body 51 and the second main body 52 are open, and the first support 54 is located at the opening of the first insertion portion 56. When the first main body 51 is lowered in this state, the lower surface of the second support 55 comes into contact with the first insert 56, and the first support 54 passes through the opening of the first insert 56. , Between the first insert 56 and the second insert 57. As shown in FIG. 9B, when the first main body 51 is rotated as it is, the first support 54 rotates while being sandwiched between the first insert 56 and the second insert 57. . At this time, the first insertion body 56 and the second insertion body 57 serve as stoppers, and the first main body and the second main body do not come off. As shown in FIG. 9C, the first main body and the second main body rotate until they are completely closed. By performing the reverse procedure, the first main body and the second main body can be easily removed.

FIG. 10 is a partial perspective view showing a third embodiment of the cooking hot plate according to the present invention, and FIG. 11 is a sectional view thereof. The basic structure of the cooking hot plate is the same as that of the first embodiment shown in FIG. 1, but the structure of the hot plate body is different. The hot plate main body 60 includes a first main body 61 and a second main body 62, and the first main body 61 and the second main body 62 have hinges attached to lower ends thereof so as to be freely opened and closed in the vertical direction. . When the cooking plate 1 is not attached, it is urged by an elastic body 64 such as a spring so as to be closed.

When the cooking plate 1 is mounted, the first main body 61 is bent and opened by hand from the second main body 62, and the flange 11a provided on the cooking plate 1 is fitted into the groove 62a of the second main body 62. . When the hand is released, the first main body 6
1 is closed, the flange portion 11a of the cooking plate 1 is fitted into the groove 62a of the first main body portion 61, and the cooking plate 1 is connected to the first main body portion 61.
And the second main body 62 to hold and fix. At this time, the first
As in the embodiment, the electrodes 67a and 67b and the sensor 68 for checking the presence or absence of the cooking plate 1 are in contact with the cooking plate 1.
When removing the cooking plate 1 from the hot plate main body 60, the first main portion 61 may be bent open from the second main portion 62 to take out the cooking plate 1 in a procedure reverse to the procedure for attaching the cooking plate 1. . In this way, the first body 61 and the second body 62 are urged in the closing direction by the elastic body 64, so that the first body 61 and the second body 62 are automatically closed and opened. The safety is improved.

In the fourth embodiment, when the first main body and the second main body are bent and opened, a pushing lever for pushing up the cooking plate is provided so that the cooking plate can be easily taken out. This embodiment has a structure in which a pushing lever is provided in the third embodiment. FIG. 12 is an explanatory diagram of the structure and operation of this embodiment. As shown in FIG.
A lever button 71 is provided on an edge of the second main body 62, and an extruding lever 72 having one end in contact with the lever button 71 and the other end in contact with the cooking plate 1 is provided inside the second main body 62. The push-out lever 72 has a rod-like portion and a curved portion, and has a structure rotatable about a portion therebetween. The lever button 71 is in contact with one end of a horizontal bar of the pushing lever 72, and the tip of the curved portion of the pushing lever 72 is in contact with the cooking plate 1. As shown in FIG. 12B, the first main body is bent open by hand while pressing the lever button. At this time, one end of the cooking plate pushing lever is pushed down by the lever button, the other end is pushed up by rotating around the fulcrum, and the cooking plate that has been in contact with the other end is pushed up. As shown in FIG. 12C, when the lever button is kept pressed, the cooking plate remains pushed up by the cooking plate pushing lever even when the first main body is closed by the urging force of the elastic body. .

As described above, even a hot cooking plate after cooking can be easily taken out without directly touching it. In addition, even when the first main body and the second main body are closed by the urging force of the elastic body, the cooking plate can be easily held while holding the first main body and the second main body in an open state with both hands. Can be taken out.

[0034]

According to the first aspect of the present invention, the cooking plate is sandwiched and fixed between the two main portions so that the flange portion of the cooking plate is fitted into the groove of the first main portion and the second main portion. A simple structure can be used to securely position and fix the main body and the cooking plate.This eliminates rattling of the cooking plate during use, improving usability and ensuring power supply to the cooking plate with a heating section. Can be. Further, since the first main body has a structure in which the electrical components are concentrated and the second main body has a structure that does not include the electrical components, the first main body is assembled at a factory requiring technical skills during manufacturing and assembly.
Since the main body can be assembled in a factory that does not require much technical skills, assembling efficiency is improved,
Manufacturing costs can be reduced.

According to the second aspect of the present invention, since the first main body and the second main body can be detached, the second main body not including the electrical component can be washed in a circle, and the periphery of the cooking plate that is easily soiled can be washed. Cleanability can be improved.

According to the third and fourth aspects of the present invention, the first main body and the second main body can be closed and fixed by fitting the hooking claws into the hooking recesses. Can be prevented and safety is improved. Furthermore, according to the invention of claim 4, since the control unit confirms that the hook claw is fitted in the hook recess by the detection signal of the sensor that detects the position of the hook claw, the control unit conducts electricity to the cooking plate. In addition, it is possible to prevent the first main body and the second main body from being operated while being opened, thereby improving safety.

According to the fifth and sixth aspects of the present invention, since both body portions are urged in the closing direction by the elastic body,
Since the first main body and the second main body are always closed, the cooking plate can be prevented from jumping out, and safety is improved. Furthermore, according to the sixth aspect of the invention, the structure in which the cooking plate is lifted from the main body makes it possible to easily take out the cooker while keeping the first main body and the second main body open by hand.

According to the seventh aspect of the present invention, the cooking plate has a structure in which a conductive material serving as a heating element is applied to the back surface, or formed by using a conductive material, or a heating element is attached to the back surface. There is little heat escape, and heat efficiency is improved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing one embodiment of a cooking hot plate according to the present invention.

FIG. 2 is an explanatory view of a cooking plate of the cooking hot plate.

FIG. 3 is a schematic perspective view of a hot plate main body of the cooking hot plate.

FIGS. 4A and 4B are explanatory diagrams of an opening and closing operation of a hot plate main body.

FIG. 5 is a schematic sectional view of the cooking hot plate.

FIG. 6 is a block diagram of the cooking hot plate.

FIG. 7 is a flowchart showing an operation of a control unit of the cooking hot plate.

FIG. 8 is a schematic view of a main body showing a second embodiment of a cooking hot plate according to the present invention.

FIGS. 9A to 9C show a first main body 5 of the second embodiment.
FIG. 4 is an explanatory diagram showing a procedure for attaching 1 to a second main body 52.

FIG. 10 is a perspective view of a cooking plate and a main body showing a third embodiment of a cooking hot plate according to the present invention.

FIG. 11 is a sectional view of a third embodiment of a cooking hot plate according to the present invention.

FIGS. 12 (A) to 12 (C) are operation explanatory views of a fourth embodiment of the cooking hot plate according to the present invention.

[Description of Signs] 1 Cooking plate 2 Main body 11a, 11b Flange portion 21a, 22a Groove 23 Hinge

Claims (7)

(57) [Claims] 1. A cooking hot plate comprising a cooking plate, a heating element for heating the cooking plate, and a main body having a concave portion for placing and mounting the cooking plate, wherein the cooking plate has a flange at an opposite edge. The main body is divided into two parts, one is a first main body part in which the electric parts are concentrated, and the other is a second main body part that does not include the electric parts, and both main body parts are openably and closably connected by a hinge. A groove is formed on the inner wall of the recess of the first main body to fit the flange of the cooking plate, and a groove is formed on the inner wall of the concave of the second main body to fit the flange of the cooking plate. A hot plate for cooking, wherein the cooking plate is sandwiched and fixed between the two main body portions such that both flange portions of the cooking plate are fitted into grooves of the first main body portion and the second main body portion. 2. The cooking hot plate according to claim 1, wherein the cooking hot plate has a hinge structure in which both body portions are detachable. 3. A main body part is provided with a hooking claw, and the other main body part is provided with a hooking recess, and the hooking claws are fitted into the hooking recesses, whereby both body parts are closed and fixed. The hot plate for cooking according to claim 1 or 2, wherein: 4. A sensor for detecting a position of the hooking claw, a control unit for confirming that the hooking claw is fitted in the hooking recess by a detection signal of the sensor, and energizing the cooking plate. The cooking hot plate according to claim 3, further comprising: 5. The cooking hot plate according to claim 1, wherein both body portions are urged in a closing direction by an elastic body. 6. The cooking hot plate according to claim 5, further comprising a structure for lifting the cooking plate from the main body. 7. The cooking plate according to claim 1, wherein a conductive material as a heating element is applied to the back surface, or the heating plate is formed from the conductive material, or a heating element is attached to the back surface. 7. The cooking hot plate according to claim 3, 3, 4, 5, or 6.