JP2012054128A - Induction heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an induction heating cooker that improves assembly accuracy in a positional relation between a top plate and heating coils by restricting horizontal displacement of the top plate and the heating coils in assembly.SOLUTION: The induction heating cooker comprises elastic means such as a spring and the like pushing up and impressing a non-magnetic plate 41 to a top plate 33 so as to closely attach heating coils 35 to a top plate 33 or keep a predetermined distance between the top plate 33 and the heating coils 35, and positioning means 43 restricting a horizontal position of the non-magnetic plate 75 and provided on a proper place on an upper part of a side plate 42b of a case 42. Accordingly, the horizontal position of the non-magnetic plate 41 with respect to the side plate 42b of the case 42 can be restricted with a simple structure. Accordingly, the horizontal positions of the heating coils 35 and the top plate 33 placed on the non-magnetic plate 41 are stabilized and the heating coils 35 and the top plate 33 can be accurately assembled.

Description

  The present invention relates to an induction heating cooker having a configuration in which the positional relationship between a top plate on which a cooked container to be heated and a heating coil are assembled with high accuracy.

  In recent years, induction heating cookers have become widespread as a safe and clean heat source that does not use fire and does not emit combustion gas. This induction heating cooker includes a heating coil for induction heating and various electronic components on a control circuit that supplies a high-frequency current to the heating coil in a controllable manner.

  And although the induction heating cooker has higher thermal efficiency than gas heating, the heating efficiency varies depending on the relative permeability and resistivity depending on the material of the cooking pan, and heat loss increases under relatively low thermal efficiency conditions. Since the heat generation of the components such as the heating coil increases accordingly, the structure of the heating coil is important and various improvements have been made in order to perform stable cooking.

  As a configuration of the heating coil of this type of induction heating cooker, there is a configuration in which the heating coil is supported by a simple method (for example, see Patent Document 1).

  For example, in the configuration of the heating coil and the inverter board of the conventional induction heating cooker shown in FIG. 9, the top plate 1 on which the pan or the like is placed is formed of a ceramic plate or the like. Below the top plate 1, a coil 2 for generating magnetic lines for induction heating of the pan is disposed.

  The coil 2 is fixed on the support 3. Below the support 3, an inverter board 4 is provided for supplying a high frequency current to the coil 2 to drive it. The inverter substrate 4 is held on a substrate support 5.

  The substrate support 5 has a plurality of support bosses 6 for holding the support 3. An elastic body 7 composed of a spring is inserted into a column formed at the center of the support boss 6. The holding portion 8 has a cylindrical shape that is integrally formed on the outer peripheral portion of the support 3 and opens downward, and is covered with the elastic body 7.

  The support 3 is held by these. The support 3 is provided with a plurality of pressing bosses 9 above the holding portion 8. The pressing boss 9 is pushed up by the elastic body 7 and hits the back surface of the top plate 1.

  With this configuration, the gap distance between the coil 2 and the top plate 1 is always kept constant. Further, the sliding distance A of the support 3 depends on the shape and the urging force of the elastic body 7 and should not be smaller than the minimum value of the gap B between the support lower surface 10 and the electronic component top surface portion 11. .

  In such a conventional configuration, for example, when the product is accidentally dropped in a packaged state, an impact is applied to the main body. Here, the support 3 that supports the coil 2 is held by an elastic body 7. Therefore, the elastic body 7 is compressed downward, and the support body 3 is simultaneously pushed downward and slides.

  At that time, the pressed support 3 is pressed down until it hits the electronic component top surface portion 11 placed on the inverter board 4. Therefore, stress is applied to the electronic component, and the inverter board 4 is also destroyed together with the electronic component.

For this reason, in the conventional configuration, the minimum value of the gap B between the support lower surface 10 and the electronic component top surface portion 11 is increased, or the biasing force of the elastic body 7 is increased so that no stress is applied to the electronic component. ing.

  When the minimum value of the gap B is increased, it is impossible to mount parts with high density in the space in the main body, resulting in an increase in product height, and it is not possible to meet the demand for a compact and thin main body. On the other hand, when the urging force is increased by changing the material or shape of the elastic body 7, the pressure applied to the top plate 1 from the pressing boss 9 increases. Therefore, the impact given to the top plate 1 when the product is dropped in the packaged state is increased, and the possibility that the top plate 1 is broken increases.

  For this reason, there is a configuration in which the heating coil is supported by a simple method and is not easily broken even when subjected to an impact such as dropping (for example, see Patent Document 2).

  For example, the conventional induction heating cooker shown in FIG. 10 has a top plate 21 on which a cooking container is placed, a heating coil 22, an inverter substrate 23, a support 24, a substrate support 25, and an elastic body 26. . The heating coil 22 induction-heats the cooking container.

  The inverter board 23 mounts components and drives the heating coil 22. The support 24 is disposed above the inverter board 23 and supports the heating coil 22.

  The support 24 is provided with a pressing boss 27 on the upper side, and is pressed against the top plate 21 with the pressing boss 27 interposed therebetween. The substrate support 25 has three or more support bosses 27 that hold the support 24 and also holds the inverter substrate 23.

  The elastic body 26 is interposed between the support 24 and the support boss 28. The support body 24 is provided with a first sliding restriction portion 24a, and the support boss 28 is provided with a second sliding restriction portion 28a. The first sliding restricting portion 24a and the second sliding restricting portion 28a are in contact with each other, and the sliding distance of the support 24 is smaller than the minimum value of the gap between the lower surface 24b of the support 24 and the top surface 23a of the component. Limit to be smaller.

  As a result, even if the elastic body 26 is compressed and the support body 24 is pressed down, the support body 24 does not hit the parts on the inverter board 23, and even if it receives an impact such as dropping, it is hard to break and the reliability is increased.

Japanese Patent Laid-Open No. 9-312195 International Publication No. 2006/022275

  However, in the conventional configuration, the support body 24 on which the heating coil 22 is placed is pressed against the top plate 21 by the elastic body 26 interposed between the support body 24 and the support boss 28. Since the horizontal position of the heating coil 22 is not restricted, there is a problem that the positional relationship between the top plate 21 and the heating coil 22 is difficult to stabilize.

  In particular, a gap between the elastic body 26 and the support boss 28 required to bend the elastic body 26 and a gap between the support boss 28 and the elastic body 26 required when the elastic body 26 during assembly is inserted into the support boss 28. Therefore, the horizontal position of the heating coil 22 is difficult to be determined.

Further, the support bosses 28 are provided on the substrate support 25 provided on the lower surface of the outer shell, the mounting variation between the outer shell and the substrate support 25, the angle variation between the lower surface and the side surface of the outer shell, and the mounting variation with the side surface of the outer shell. In addition, since there is a large amount of accumulated positional deviation in the horizontal direction with respect to the top plate 21, the positional relationship between the top plate 21 and the heating coil 22 is easily shifted.

  For this reason, even if the heating position is displayed on the top plate 21, the heated cooking container placed on the top plate 21 and the heating coil 22 are misaligned, and the heating efficiency of the heated cooking container is deteriorated or heated. In the case of worries that cooking is not possible due to unevenness, or induction heating cooking in which a sensor or indicator is attached to the heating coil 22, the sensor detection is caused by the displacement of the printing applied to the top plate 21 and the position of the sensor or indicator, etc. There was a problem that the accuracy and appearance of the display device deteriorated.

  The present invention solves the above-mentioned conventional problems, and with a simple configuration, the horizontal displacement of the heating coil 22 and the top plate 21 is regulated, and the positional relationship between the top plate 21 and the heating coil 22 is assembled with high accuracy. It is an object to provide an induction heating cooker.

  In order to solve the above-mentioned conventional problems, an induction heating cooker according to the present invention includes a top plate provided on an upper surface of a main body, and a heating cooker on the top plate provided below the top plate. A circular heating coil, a coil base that holds the heating coil, a metal nonmagnetic plate on which the coil base is placed, and an inverter drive unit that is positioned below the nonmagnetic plate and drives the heating coil And a non-magnetic plate so that the top plate and the heating coil are in close contact with each other or keep a predetermined distance. The elastic means consisting of a spring or the like is disposed so as to push upward and press against the top plate, and at an appropriate position on the upper side wall of the case. Serial is obtained by a structure provided with positioning means for restricting the horizontal position of the non-magnetic plate.

  Thereby, since the positioning means for restricting the horizontal position of the nonmagnetic plate is provided at an appropriate position on the upper side wall of the case, the horizontal position of the nonmagnetic plate with respect to the side wall of the case can be regulated with a simple configuration. Since the horizontal position of the heating coil and the top plate mounted on the nonmagnetic plate can be stabilized, the positional relationship between the top plate and the heating coil can be assembled with high accuracy.

  The induction heating cooker of the present invention regulates the horizontal position of the nonmagnetic plate with respect to the side wall of the case with a simple configuration, and the horizontal position of the heating coil and the top plate placed on the nonmagnetic plate is It can be stabilized, and the positional relationship between the top plate and the heating coil can be assembled with high accuracy, so by placing the cooked cooking container on the heating position displayed on the top plate with high accuracy just above the heating coil Therefore, it is possible to reduce the heating efficiency and heating unevenness.

  In addition, in induction heating cooking with a sensor or display attached to the heating coil, the positional deviation between the printing on the top plate and the sensor or display can be reduced, improving the detection accuracy of the sensor and the appearance of the display. Therefore, quality and performance can be improved.

Sectional drawing of the principal part of the induction heating cooking appliance in Embodiment 1 of this invention The principal part perspective view of the induction heating cooking appliance in Embodiment 1 of this invention The top view of the induction heating cooking appliance in Embodiment 1 of this invention Control block diagram of induction heating cooker in Embodiment 1 of the present invention The principal part perspective view of the induction heating cooking appliance in Embodiment 2 of this invention The principal part perspective view of the induction heating cooking appliance in Embodiment 3 of this invention Sectional drawing of the principal part of the induction heating cooking appliance in Embodiment 3 of this invention Sectional drawing of the principal part of the induction heating cooking appliance in other embodiment of this invention Sectional view of the main part of a conventional induction heating cooker Sectional view of the main part of a conventional induction heating cooker

  In order to solve the conventional problems, an induction heating cooker according to a first aspect of the present invention heats a top plate provided on the upper surface of a main body and a cooked container on the top plate provided below the top plate. A substantially circular heating coil, a coil base that holds the heating coil, a metal nonmagnetic plate on which the coil base is placed, and an inverter drive that is positioned below the nonmagnetic plate and drives the heating coil And a non-magnetic unit so that the top plate and the heating coil are in close contact with each other or keep a predetermined distance. The plate is pushed upward, and elastic means such as a spring is disposed so as to press the plate against the top plate. Serial is a structure in which a positioning means for restricting the horizontal position of the non-magnetic plate.

  Since the positioning means for regulating the horizontal position of the nonmagnetic plate is provided at an appropriate position on the upper side wall of the case, the horizontal position of the nonmagnetic plate with respect to the side wall of the case can be regulated with a simple configuration. The horizontal position of the heating coil and the top plate placed on the magnetic plate can be stabilized, and the positional relationship between the top plate and the heating coil can be assembled with high accuracy.

  Thereby, by placing the cooked container at the heating position displayed on the top plate, it is possible to accurately position the cooking container directly above the heating coil, and it is possible to reduce heating efficiency and uneven heating.

  In addition, in induction heating cooking with a sensor or display attached to the heating coil, it is possible to reduce the positional deviation between the printing on the top plate and the sensor or display, improving the detection accuracy of the sensor and the appearance of the display. As a result, quality and performance can be improved.

  In the second invention, in particular, the height of the positioning means of the first invention is configured such that the height is regulated so as not to interfere with the control unit when the nonmagnetic plate is lowered to the lowest end.

  As a result, the height of the positioning means is configured to regulate the height so that it does not interfere with the control unit when the non-magnetic plate is lowered to the lowermost end. Even if the non-magnetic plate falls to the lowermost end due to an accident such as dropping, it does not come into contact with the control unit, so there is no worry of damaging the control unit, and it can be pushed up to the top plate by reaction that contacts the control unit. Therefore, the risk of damaging the top plate by increasing the impact applied to the top plate can be greatly reduced.

  According to a third aspect of the invention, in particular, the positioning means of the first or second aspect of the present invention cuts and raises at a proper position on the side wall of the case to provide a positioning opening on the upper surface, and a part of the non-magnetic plate or the opening is provided in the opening. The structure is such that a horizontal position is regulated by inserting a separate insertion portion.

As a result, a positioning opening is formed by cutting and raising at an appropriate position on the side wall of the case to provide an opening for positioning on the upper surface, and inserting a part of the non-magnetic plate or a separate insertion portion into the opening. Therefore, the positioning means can be configured with the minimum number of parts, the number of steps for attaching the parts can be reduced, and the cost can be reduced.

  Further, since the positioning opening is integrated with the side wall of the case, there is no positional deviation between the side wall of the case and the positioning opening, so that the positional accuracy can be increased, and the top plate and the heating coil can be further improved. Can be assembled with high accuracy.

  According to a fourth aspect of the present invention, in particular, the elastic means according to any one of the first to third aspects is a coil spring disposed so as to be positioned between the bottom of the case or the upper surface of the control unit and the lower surface of the nonmagnetic plate. The configuration is formed.

  Accordingly, the elastic means is formed by a coil spring disposed so as to be positioned between the bottom of the case or the upper surface of the control unit and the lower surface of the nonmagnetic plate, and thus the horizontal position of the nonmagnetic plate is regulated. The nonmagnetic plate is attached using the positioning means to be pushed up at the same time by the coil spring and pressed against the top plate, so that the assembling property can be improved.

  In a fifth aspect of the present invention, in particular, in any one of the first to third aspects, a positioning opening is provided at an upper surface by cutting and raising at an appropriate position on the side wall of the case, and the opening is formed on a part of the nonmagnetic plate. A structure in which the insertion portion formed integrally is inserted to regulate the position in the horizontal direction, and the elastic means is formed integrally with the non-magnetic plate so that a part of the insertion portion has an elastic shape such as a leaf spring shape. It is as.

  As a result, the elastic means is formed integrally with the non-magnetic plate so that the shape of a part of the insertion portion is an elastic shape such as a leaf spring shape. The positioning means can be configured without using it, and the man-hours for mounting the parts can be reduced and the cost can be reduced.

  In the sixth aspect of the invention, in particular, the positioning means of the first or second aspect of the invention provides a horizontal plane portion by cutting and raising at an appropriate position on the side wall of the case, and a positioning pin on the horizontal plane portion and an elastic body 26 around the positioning pin. In addition, a positioning hole is provided in the non-magnetic plate, and a positioning pin for the positioning component is inserted to restrict the horizontal position.

  As a result, a horizontal plane portion is formed by cutting and raising at an appropriate position on the side wall of the case, and a positioning pin and an elastic body are arranged around the horizontal plane portion. Next, after disposing the elastic body, the nonmagnetic plate can be stacked with the positioning holes of the nonmagnetic plate as guides, and can be stacked and assembled, which greatly improves workability. it can.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a cross-sectional view of main parts of an induction heating cooker according to the first embodiment of the present invention, FIG. 2 is a perspective view of main parts of the induction heating cooker according to the first embodiment of the present invention, and FIG. The top view of the induction heating cooking appliance in the 1st Embodiment of this invention, FIG. 4 is a control block diagram of the induction heating cooking appliance in the 1st Embodiment of this invention.

As shown in FIGS. 1 to 4, the top surface of the main body 31 is formed by a top plate 33 on which a cooking container 32 to be heated such as a pan is placed, and an operation portion 34 is provided in a part of the top plate 33. A heating coil 35 having a substantially circular shape for heating the cooking container 32 to be heated, and a control unit 37 for controlling the operation of the heating coil 35 and an inverter unit 36 for supplying power are arranged. The switching semiconductor of the inverter unit 36 is turned on and off to control the high frequency oscillation of the inverter unit 36 and to control the start and stop of the oscillation operation.

  The inverter unit 36 is one of frequency converters, and includes a power supply rectifier, a filter capacitor, a resonant capacitor, a switching semiconductor, and the like. The inverter unit 36 converts the commercial power supply 38 into a high frequency current, and supplies the high frequency current to the heating coil 35. The heating coil 35 generates a high-frequency magnetic field in the vicinity of the cooked cooking container 32 to heat the bottom of the cooked cooking container 32.

  The heating coil 35 is composed of two coils, an inner side and an outer side, arranged in a substantially concentric circular series. A heat resistant resin-based coil base 39 is provided below the heating coil 35. It is placed on a nonmagnetic plate 41 made of aluminum.

  The top plate 33 displays the place where the cooked container 32 is placed by printing, and the light emitting display 40 is disposed on the outer periphery of the coil base 39 where the heating coil 35 is placed inside the main body 31. At least the top plate 33 facing the light-emitting display body 40 is configured to transmit light, and the light-emitting display body 40 emits light toward the top plate 33 and the position where the cooked cooking container 32 is placed or is heated. The fact that the coil 35 is in a heated state is displayed so that it can be easily understood by the user.

  The case 42 forming the outer shell below the top plate 33 of the main body 31 is formed of a metal plate, bent upward from the bottom surface 42a, and integrally formed with a side plate 42b as a side wall. And a control unit 37 are incorporated.

  Then, as shown in FIG. 2, a positioning opening 43a is provided on the upper surface by cutting and raising at an appropriate position on the side plate 42b of the case 42, and an insertion portion 41a provided in a part of the nonmagnetic plate 41 is provided in the positioning opening 43a. The positioning means 43 is provided so as to be inserted to restrict the horizontal position.

  In addition, the height of the positioning means 43 formed by cutting and raising the side plate 42b of the case 42 at a proper position is higher than the uppermost end of the parts of the control unit 37, and the nonmagnetic plate 41 is lowered to the lowermost end. In addition, the height of the positioning means 43 is regulated so as not to interfere with the control unit 37. Further, the positioning means 43 formed by cutting and raising is provided with a bent portion 42c downward to prevent it from collapsing with the lower side plate 42b. And keep the horizontal plane.

  In addition, a coil spring 44 that is an elastic body is disposed in the vicinity of the positioning means 43 so as to be positioned between the upper surface of the bottom of the case 42 and the lower surface of the nonmagnetic plate 41, and the nonmagnetic plate 41 is moved by the coil spring 44. It is pushed upward and pressed against the top plate 33.

  About the cooking-by-heating machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  On the top surface of the main body 31, a heated cooking container 32 such as a pan is placed, and when the user operates the operation unit 34 to start heating under a predetermined condition, the control unit 37 operates the inverter unit 36. Thus, a high-frequency current is supplied to the heating coil 35, and the heating coil 35 generates a high-frequency magnetic field in the vicinity of the cooked cooking container 32 to heat the bottom of the cooked cooking container 32.

Here, since the positioning means 43 for restricting the horizontal position of the nonmagnetic plate 41 is provided at an appropriate position above the side plate 42b of the case 42, the horizontal direction of the nonmagnetic plate 41 with respect to the side plate 42b of the case 42 is simplified. The horizontal position of the heating coil 35 and the top plate 33 placed on the nonmagnetic plate 41 can be stabilized, and the positional relationship between the top plate 33 and the heating coil 35 can be assembled with high accuracy. You can

  Thereby, by placing the cooked container 32 on the heating position 33a displayed on the top plate 33, it is possible to accurately place it on the heating coil 35, and it is possible to reduce heating efficiency and heating unevenness. it can.

  And the positional deviation of the printing display part of the place which mounts the cooking container 32 to be heated of the top plate 33, and the heating coil 35 can also be reduced, and the position and heating coil in which the cooking container 32 to be heated by the light emission display body 40 is mounted. The portion that indicates that the heating state 35 is in a heated state can be also reduced, and the transmission portion of the top plate 33 can be reduced, so that the heating coil 35 and the like that are located below the top plate 33 are incorporated. Objects can be made difficult to see, and the appearance can be improved.

  In addition, in induction heating cooking in which a sensor, a display, etc. (not shown) is attached to the heating coil 35, the positional deviation between the printing applied to the top plate 33 and the sensor, the display, etc. can be reduced. Since the appearance of the display can be improved, the quality and performance can be improved.

  Furthermore, since the height of the positioning means 43 is configured to regulate the height so as not to interfere with the control unit 37 when the nonmagnetic plate 41 is lowered to the lowermost end, the induction heating cooker is transported or installed. Even if the nonmagnetic plate 41 falls to the lowermost end due to an accident such as dropping, it does not come into contact with the control unit 37, so there is no fear of damaging the control unit 37, and further, the top plate is caused by the recoil contact with the control unit 37. Since it is not pushed up by 33, the impact given to top plate 33 becomes large, and the danger of destroying top plate 33 will also be reduced significantly.

  Then, a positioning opening 43a is provided on the upper surface by cutting and raising at an appropriate position on the side plate 42b of the case 42, and the positioning means 43 is inserted into the opening 43a by inserting a part of the nonmagnetic plate 41 or an insertion portion 41a provided separately. Since it is configured, the positioning means 43 can be configured with the minimum number of parts, and the number of steps for attaching the parts can be reduced, and the cost can be reduced.

  Further, since the positioning opening 43a is integrated with the side plate 42b of the case 42, there is no positional deviation between the side plate 42b of the case 42 and the positioning opening 43a. The positional relationship between the top plate 33 and the heating coil 35 can be assembled with high accuracy.

  Further, the positioning means 43 formed by cutting and raising is provided with a bent portion 42c downward so as to prevent it from collapsing with the lower side plate 42b so as to keep the horizontal plane, so that the positioning means 43 is loaded on the nonmagnetic plate 41. Even if it is bent downward, it is supported by the downward bent portion 42c, can maintain a horizontal plane, and can maintain the positional relationship between the top plate 33 and the heating coil 35 with high accuracy.

  The elastic means is formed by a coil spring 44 disposed so as to be positioned between the upper surface of the bottom portion of the case 42 and the lower surface of the nonmagnetic plate 41. Therefore, the positioning means 43 that regulates the position in the horizontal direction is used. Thus, the non-magnetic plate 41 can be attached and simultaneously pushed up by the coil spring 44 and pressed against the top plate 33, and the assemblability can be improved.

  It is to be noted that the positioning means 43 and the coil springs 44 as elastic means are arranged in the vicinity of the means for fastening the case 42 and the top plate 33, and the heating coil 35 and the top plate 33 placed on the nonmagnetic plate 41. The accuracy of the horizontal position of is increased.

(Embodiment 2)
FIG. 5 is a perspective view of a main part of the induction heating device according to the second embodiment of the present invention. In the second embodiment, the configuration of the positioning means is different from that of the first embodiment. The same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted, and only different parts are described.

  As shown in FIG. 5, a positioning opening 43a is provided on the upper surface by cutting and raising at an appropriate position on the side plate 42b of the case 42, and an insertion portion 51a formed integrally with a part of the nonmagnetic plate 51 is inserted into the opening 43a. A configuration in which the position in the horizontal direction is restricted, and the elastic means is provided with a bent portion 51b so that the shape of a part of the insertion portion 51a of the nonmagnetic plate 51 is easily bent, and is formed integrally with the nonmagnetic plate 51 as an elastic shape. It is as.

  And since the elastic means is formed integrally with the non-magnetic plate 51 by providing the bent portion 51b so that the shape of a part of the insertion portion 51a is easily bent, other parts such as the coil spring 44 are not required. The positioning means 43 can be configured without using new parts, and the number of steps for attaching the parts can be reduced and the cost can be reduced.

(Embodiment 3)
FIG. 6 is a perspective view of the main part of the induction heating apparatus according to the second embodiment of the present invention, and FIG. 7 is a cross-sectional view of the main part of the induction heating cooker according to the third embodiment of the present invention. is there. In the present embodiment, the configuration of the positioning means is different from those of the first and second embodiments described above, and the same parts as those in the first embodiment are denoted by the same reference numerals, the description thereof is omitted, and only the different parts are described. Will be explained.

  As shown in FIG. 6 and FIG. 7, a horizontal plane 61b is provided by cutting and raising at a proper position on the side plate 61a of the case 61, and a positioning pin 63 and an elastic body 64 of elastic means are disposed around the horizontal plane 61b. In addition, a positioning hole 66 is provided in the nonmagnetic plate 65, and a positioning pin 63 of a positioning component is inserted to regulate the horizontal position.

  The horizontal plate 61b is cut and raised at an appropriate position on the side plate 61a of the case 61, and the positioning pin 63 and the elastic body 64 are arranged around the horizontal plate 61b. After mounting the pin 63 and then disposing the elastic body 64, the nonmagnetic plate 65 can be stacked with the positioning hole 66 of the nonmagnetic plate 65 as a guide, and can be stacked and assembled. Workability can be greatly improved.

  In addition, FIG. 8 is principal part sectional drawing of the induction heating cooking appliance in other embodiment of this invention. As shown in FIG. 8, a mounting portion is provided at an appropriate position on the side plate 71a of the case 71, and a positioning pin 72 and a positioning component 74, which are separate from the case 71 in which an elastic body 73 is disposed around the pin 72, are mounted. The positioning holes 76 may be provided in the nonmagnetic plate 75 and the positioning pins 72 of the positioning component 74 may be inserted to regulate the horizontal position.

According to this, when the strength for holding the elastic body 73 is required, if the positioning part is cut and raised from the case 71, measures for the strength of the case 71 such as increasing the plate thickness of the case 71 are required. Although there is a concern that the cost is increased and the weight is increased, the positioning component 74 separate from the case 71 is attached to a mounting portion provided at an appropriate position on the side plate 71a of the case 71. It is only necessary to increase the strength, such as increasing the thickness of only 74, so that weighting can be easily performed.

  Further, although the positioning pin 72 has been described as a separate member from the positioning component 74, this may be formed by cutting and raising a part of the positioning component 74.

  As described above, the induction heating cooker according to the present invention is configured with a simple configuration and the horizontal displacement of the heating coil and the top plate is regulated, so that the positional relationship between the top plate and the heating coil can be accurately assembled. It is effective for all induction heaters that use heating coils.

1,21 Top plate 31 Main body 32 Cooked container 33 Top plate 22, 35 Heating coil 37 Control unit 39 Coil base 41, 51, 65, 75 Nonmagnetic plate 42, 61, 71 Case 42b, 61a, 71a Side plate 42c Bending Portion 43 Positioning means 43a Opening 44 Coil spring 51b Bending portion 7, 26, 64, 73 Elastic body 63, 72 Pins 66, 76 Positioning hole

Claims (6)

A top plate provided on the upper surface of the main body, a substantially circular heating coil provided below the top plate for heating the cooked cooking container on the top plate, a coil base for holding the heating coil, and the coil A metal non-magnetic plate on which the base is placed, a control unit having an inverter drive unit and the like that is positioned below the non-magnetic plate and drives the heating coil, and the heating coil and the control unit are covered from below. An elastic means comprising a spring or the like so as to push the non-magnetic plate upward and press it against the top plate so that the top plate and the heating coil are in close contact with each other or keep a predetermined distance. Positioning means for restricting the horizontal position of the non-magnetic plate at an appropriate position above the side wall of the case. Only induction heating cooker. 2. The induction heating cooker according to claim 1, wherein the height of the positioning unit is configured such that the height of the positioning unit is regulated so as not to interfere with the control unit when the nonmagnetic plate is lowered to the lowest end. The positioning means is cut and raised at an appropriate position on the side wall of the case to provide an opening for positioning on the upper surface, and a part of the non-magnetic plate or a separate insertion portion provided in the opening is inserted into the horizontal position. The induction heating cooker according to claim 1 or 2, wherein the temperature is regulated. The induction heating cooking according to any one of claims 1 to 3, wherein the elastic means is formed by a coil spring disposed so as to be positioned between the bottom of the case or the upper surface of the control unit and the lower surface of the nonmagnetic plate. vessel. Cutting and raising an appropriate position on the side wall of the case to provide an opening for positioning on the upper surface, and inserting an insertion part formed integrally with a part of the non-magnetic plate into the opening to regulate the horizontal position, The induction heating cooker according to any one of claims 1 to 3, wherein the elastic means is formed integrally with the non-magnetic plate so that a part of the insertion portion has an elastic shape such as a leaf spring shape. The positioning means is cut and raised at an appropriate position on the side wall of the case to provide a horizontal surface portion, a positioning pin and an elastic body around the horizontal surface portion are provided, and a positioning hole is provided in the nonmagnetic plate, The induction heating cooker according to claim 1 or 2, wherein a positioning pin of a positioning component is inserted to regulate a horizontal position.