WO2017138172A1

WO2017138172A1 - Heating cooker

Info

Publication number: WO2017138172A1
Application number: PCT/JP2016/074816
Authority: WO
Inventors: 竹内　淳一; 正久飯田
Original assignee: シャープ株式会社
Priority date: 2016-02-08
Filing date: 2016-08-25
Publication date: 2017-08-17
Also published as: EP3415820B1; EP3415820A4; EP3415820A1; CN108603664B; JP6670623B2; CN108603664A; JP2017141994A

Abstract

A heating cooker of the present invention is provided with: a heating chamber; a plurality of rollers (202) disposed at intervals in the circumferential direction on the bottom surface of the heating chamber; connecting members (201) that connect the rollers (202) to each other; and a turntable (100) disposed on the bottom surface of the heating chamber via the rollers (202). The turntable (100) has a first diameter direction move regulation section (101), which is provided on the bottom surface of the turntable (100), said bottom surface being on the inner circumferential side of the track on which the rollers (202) roll in the circumferential direction, and which regulates moving of the rollers (202) to the inner side in the diameter direction.

Description

Cooker

This invention relates to a cooking device.

Conventionally, as a cooking device, there is a heating cooker provided with a turntable disposed in a heating chamber and a motor for driving the turntable (see, for example, JP-A-2005-300134 (Patent Document 1)). .

In the heating cooker, a turntable is placed on the bottom surface in the heating chamber via a plurality of rollers, and a rotating shaft of a motor is connected to the lower center of the turntable.

JP 2005-300134 A

However, in the above-mentioned conventional cooking device, since the rotary shaft of the motor is connected to the turntable, the turntable cannot be attached and detached smoothly, and the convenience is poor.

For this reason, as another conventional cooking device, a turntable disposed in a heating chamber is rotatably supported by a plurality of rollers connected by a connecting member, and the connecting member that connects the plurality of rollers is a motor. Some of them are driven by a rotating shaft.

In the above cooking device, since the turntable is only placed on a plurality of rollers, the turntable can be attached and detached smoothly. However, in the above cooking device, when the food container etc. are taken out from the turntable after cooking, if the whole food container containing food is heavy, the turntable is dragged to the food container and comes off from the plurality of rollers. May jump out. In particular, in a built-in type heating cooker having a side door, there is a possibility that a turntable that has jumped out will fall under the feet.

In Europe, etc., it is necessary to ensure safety by confirming that the turntable does not slide out of the heating cabinet under the test conditions specified in IEC standard 60335-2-25 (subclause 22.118).

Therefore, an object of the present invention is to provide a cooking device that can prevent the turntable from sliding off the heating cabinet with a simple configuration.

In order to solve the above problems, the heating cooker of the present invention is:
A heating cabinet;
A plurality of rollers arranged at intervals in the circumferential direction on the bottom surface of the heating chamber;
A connecting member for connecting the plurality of rollers;
A turntable mounted on the bottom surface of the heating chamber via the plurality of rollers,
The turntable is
A first radial movement restricting portion that is provided on a bottom surface of the turntable and on an inner peripheral side of a track on which the plurality of rollers roll in a circumferential direction, and restricts movement of the plurality of rollers inward in the radial direction; It is characterized by that.

Moreover, in the heating cooker of one embodiment,
The turntable is
A second radial movement restricting portion is provided on the bottom surface of the turntable and on the outer peripheral side of the track, and restricts the movement of the plurality of rollers outward in the radial direction.

Moreover, in the heating cooker of one embodiment,
The turntable is
A third radial movement restricting portion is provided on the bottom surface of the turntable and on the outer peripheral side of the second radial movement restricting portion, and restricts movement of the plurality of rollers toward the outer peripheral side.

Moreover, in the heating cooker of one embodiment,
At the same time as or after the turntable is pulled radially outward and at least one of the plurality of rollers comes into contact with the second radial movement restricting portion, of the plurality of rollers. Another roller is configured to contact the first radial movement restricting portion.

Moreover, in the heating cooker of one embodiment,
Each of the first and second radial movement restricting portions of the turntable is an annular flange protruding downward,
The height of the first radial movement restricting portion relative to the bottom surface of the turntable is lower than the height of the second radial movement restricting portion relative to the bottom surface of the turntable.

Moreover, in the heating cooker of one embodiment,
The heating chamber includes a main body casing disposed inside,
The main body casing has a side opening door that opens and closes an opening on the front surface of the heating chamber.

Moreover, in the heating cooker of one embodiment,
The main body casing is a built-in type.

As is clear from the above, according to the present invention, the plurality of rollers are provided by the first radial movement restricting portion provided on the bottom surface of the turntable and on the inner peripheral side of the track on which the plurality of rollers roll in the circumferential direction. By restricting the movement of the plurality of rollers radially outward by the second radial movement restricting portion provided on the bottom surface of the turntable and on the outer peripheral side of the track, With a simple configuration, it is possible to realize a heating cooker that can prevent the turntable from sliding off the heating chamber.

FIG. 1 is a perspective view of a microwave oven as an example of a heating cooker according to the first embodiment of the present invention. FIG. 2 is a longitudinal sectional view of the microwave oven. FIG. 3 is a rear perspective view of the turntable and roller stay of the microwave oven. FIG. 4 is a rear view of the turntable and the roller stay as viewed from below. FIG. 5 is a sectional view taken along line VV of FIG. FIG. 6 is a schematic view showing the upper surface of the turntable. FIG. 7 is a schematic view showing a state when the turntable is shifted downward from the state of FIG. FIG. 8 is a longitudinal sectional view of an essential part seen from the line VIII-VIII in FIG. FIG. 9 is a longitudinal sectional view of an essential part seen from the line IX-IX in FIG. FIG. 10 is a schematic view showing a state when the turntable is shifted downward from a state where the roller stay position is different from FIG. FIG. 11 is a schematic view showing the upper surface of the turntable and roller stay of the comparative example. FIG. 12 is a schematic diagram showing a state when the turntable is displaced downward. FIG. 13 is a longitudinal sectional view of an essential part as seen from line XIII-XIII in FIG. FIG. 14 is a longitudinal sectional view of an essential part seen from the XIV-XIV line in FIG. FIG. 15: is a schematic diagram which shows the upper surface of the turntable of the microwave oven as an example of the heating cooker of 3rd Embodiment of this invention. FIG. 16 is a schematic view showing a state when the turntable is shifted downward from the state of FIG. FIG. 17 is a schematic diagram showing a state when the turntable is shifted downward from the state where the roller stay position is different from FIG.

Hereinafter, the cooking device of the present invention will be described in detail with reference to the illustrated embodiments.

[First Embodiment]
FIG. 1: has shown the perspective view of the microwave oven as an example of the heating cooker of 1st Embodiment of this invention.

As shown in FIG. 1, the microwave oven according to the first embodiment opens and closes a main body casing 1, a heating chamber 2 provided in the main body casing 1 and having an opening 2 a on the front surface, and an opening 2 a of the heating chamber 2. And a side-opening door 3. This microwave oven is a built-in type.

The lateral door 3 is attached to the front side of the main casing 1 so as to be rotatable about the left side as an axis. The side door 3 is provided with a transparent glass 4 having heat resistance. In addition, an operation panel 5 is provided on the right side of the front surface of the main casing 1. The operation panel 5 has a display unit and a button group.

A turntable 100 for placing an object to be heated is accommodated on the bottom surface 10 in the heating chamber 2. The turntable 100 is made of heat resistant glass or ceramic.

FIG. 2 shows a longitudinal sectional view of the microwave oven. As shown in FIG. 2, a roller stay 200 is rotatably disposed on the bottom surface 10 of the heating chamber 2 disposed in the main body casing 1. The turntable 100 is supported by the roller stay 200.

The roller stay 200 includes three arms 201 as an example of a connecting member, and three rollers 202 that are rotatably attached to the tips of the arms 201, respectively.

Further, the tip of the rotating shaft 301 is connected to the center of the roller stay 200. A gear box 302 to which the lower end of the rotating shaft 301 is connected and a motor 303 that drives the rotating shaft 301 via the gear box 302 are disposed below the heating chamber 2.

FIG. 3 is a rear perspective view of the turntable 100 and roller stay 200 of the microwave oven.

As shown in FIG. 3, the roller stay 200 includes three arms 201 connected so as to extend radially from the center at intervals of 120 °, and three rollers 202 respectively attached to the tips of the arms 201. Have. The three rollers 202 are arranged on the bottom surface 10 of the heating chamber 2 at intervals in the circumferential direction. In FIG. 3, a connecting portion to which the rotating shaft 301 (shown in FIG. 2) of the roller stay 200 is connected is omitted.

An annular first radial movement restricting portion 101 that restricts the movement of the plurality of rollers 202 inward in the radial direction on the bottom surface of the turntable 100 and on the inner peripheral side of the track on which the plurality of rollers 202 roll in the circumferential direction. Are provided concentrically with the same center as the turntable 100 (see FIG. 5).

In addition, an annular second radial movement restricting portion 102 that restricts the movement of the plurality of rollers 202 radially outward is provided on the bottom surface of the turntable 100 and on the outer peripheral side of the track. They are provided concentrically (see FIG. 5).

Furthermore, an annular third radial movement restricting portion 103 that restricts movement of the plurality of rollers 202 toward the outer peripheral side is provided on the bottom surface of the turntable 100 and on the outer peripheral side of the second radial movement restricting portion 102. The center is the same as that of the turntable 100 (see FIG. 5).

The first to third radial

movement restricting portions

101, 102, 103 are annular flanges protruding downward from the turntable 100.

In the first embodiment, the raceway surface on which the plurality of rollers 202 roll in the circumferential direction is provided on the same plane as the bottom surface of the turntable 100. However, the raceway surface of the roller is from the bottom surface of the turntable. Alternatively, it may be a concave groove-shaped bottom.

FIG. 4 shows a back view of the turntable 100 and the roller stay 200 as viewed from below. The same components as those in FIG. 5 are denoted by the same reference numerals.

5 shows a cross-sectional view taken along line VV in FIG. 4. The lower side in FIG. 5 is the upper side (the top side of the heating chamber 2 shown in FIGS. 1 and 2), and the upper side in FIG. 5 is the lower side. (The bottom 10 side of the heating chamber 2 shown in FIGS. 1 and 2). 5, the same components as those in FIGS. 3 and 4 are denoted by the same reference numerals.

As shown in FIG. 5, the roller 202 at the tip of the arm 201 rolls on a track sandwiched between the first radial movement restricting portion 101 and the second radial movement restricting portion 102 of the turntable 100. To do. At this time, the plurality of rollers 202 roll on the bottom surface 10 (shown in FIGS. 1 and 2) of the heating chamber 2.

FIG. 6 shows the top surface of the turntable 100. In FIG. 6, R <b> 1 indicates a ridge line of the first radial movement restricting portion 101 shown in FIG. 3 on the back surface of the turntable 100, and R <b> 2 is a second radial movement restricting portion shown in FIG. 102 indicates a ridgeline, and R3 indicates the ridgeline of the third radial movement restricting portion 103 shown in FIG. Here, the ridgelines R1 to R3 are trajectories connecting the maximum height positions in the circumferential direction of the first to third radial movement restricting portions 101 to 103, respectively.

In FIG. 6, on the back side of the turntable 100, the three rollers 202 of the roller stay 200 are in a correct position on the track where they roll in the circumferential direction. One of the three arms 201 of the roller stay 200 is arranged in the front-rear direction and the rear surface side (upward in FIG. 6 (back side of the heating chamber 2)), and the other two arms 201 are It is arranged at a position opened by 60 ° to the left and right with respect to the direction.

Here, a distance between a straight line A1 connecting the centers of the two lower rollers 202 in the drawing of the three rollers 202 and a straight line B1 parallel to the straight line and passing through the center of gravity O of the turntable 100 is L1, Let M be the weight of the turntable 100. In order to rotate the turntable 100 about the straight line A1 by applying a load to push down near the lower edge of the turntable 100 (on the opening 2a side of the heating chamber 2 shown in FIGS. 1 and 2), In order to rotate the center of the lower two rollers 202 as a fulcrum, a rotational moment larger than the rotational moment M × L1 is required.

Next, FIG. 7 is a schematic diagram showing a state when the turntable 100 is shifted downward from the state of FIG. In FIG. 7, the lower side is the opening 2 a side of the heating chamber 2 shown in FIGS. 1 and 2, and the upper side is the back side of the heating chamber 2.

In FIG. 7, the turntable 100 was tested under the test conditions specified in the following IEC standard.

“<Overview of IEC Standard 60335-2-25 (subclause 22.118)>
A cylindrical container (maximum thickness of 3 mm, outer diameter of about 190 mm, height of about 90 mm, and curvature of the outer base of about 5 mm) made of borosilicate glass filled with 1000 g ± 50 g of cold water was placed on the turntable. Apply a horizontal force that increases from 0 [N (kg · m / s ² )] to a maximum value of 10 [N (kg · m / s ² )] on the top of the cylindrical container, and remove the container from the turntable. Pull out of the cavity without lifting. "

As shown in FIG. 7 under the above test conditions, the turntable 100 is pulled and displaced downward in the figure (on the opening 2a side of the heating chamber 2 shown in FIGS. 1 and 2), and one roller 202 in the upper part in the figure is displaced. When the second radial movement restricting portion 102 outside the track is exceeded, the other two rollers 202 are respectively locked to the first radial movement restricting portion 101 inside the track.

Thus, it is possible to prevent the turntable 100 from being pulled out of the plurality of rollers 202 by being dragged by the container and jumping outside. Therefore, according to the said microwave oven, it can prevent that the turntable 100 slips off from the heating chamber 2 with a simple structure.

Here, a distance between a straight line A2 connecting the centers of the two lower rollers 202 in the drawing of the three rollers 202 and a straight line B2 parallel to the straight line and passing through the center of gravity O of the turntable 100 is L2, Let M be the weight of the turntable 100. In order to rotate the turntable 100 about the straight line A2 by applying a load to be pushed down near the lower edge of the turntable 100 (on the opening 2a side of the heating chamber 2), that is, the two rollers 202 on the lower side in the figure. In order to rotate around the center of the rotation, a rotation moment larger than the rotation moment M × L2 is required. The distance L2 at this time is slightly shorter than the distance L1 in FIG. 6, but there is no significant difference in the rotational moment.

Therefore, by setting the weight M and the distance L2 of the turntable 100 so that the rotational moment M × L2 is larger than the rotational moment generated by the load of the container, the container can slide on the turntable 100 and turn. Even if the table 100 moves to the vicinity of the lower edge in the figure, the turntable 100 does not tilt under the above test conditions.

FIG. 8 is a longitudinal sectional view taken along line VIII-VIII in FIG. In FIG. 8, the same components as those in FIGS. 3 and 4 are denoted by the same reference numerals. In FIG. 8, the vertical direction is reverse to FIG. 5, that is, the lower side in FIG. 8 is the lower side (the bottom 10 side of the heating chamber 2 shown in FIGS. 1 and 2), and the upper side in FIG. The top surface side of the heating chamber 2 shown in FIG.

In FIG. 8, on the back side of the turntable 100, the three rollers 202 of the roller stay 200 are in the correct positions on the track where they roll in the circumferential direction.

Here, the height H1 of the first radial movement restricting portion 101 relative to the bottom surface of the turntable 100 is set lower than the height H2 of the second radial movement restricting portion 102 relative to the bottom surface of the turntable 100. . As a result, the arm 201 connecting the plurality of rollers 202 does not interfere with the first radial movement restricting portion 101.

FIG. 9 is a longitudinal sectional view taken along line IX-IX in FIG. 7, and the turntable 100 is pulled in the left direction in the drawing (opening 2a side of the heating chamber 2 shown in FIGS. 1 and 2). The roller 202 is beyond the second radial movement restricting portion 102 outside the track. The other two rollers 202 are respectively locked to the first radial movement restricting portion 101 inside the track.

At this time, the roller 202 beyond the second radial movement restricting portion 102 is sandwiched and locked between the second radial movement restricting portion 102 and the third radial movement restricting portion 103. Locking of the roller 202 beyond the second radial movement restricting portion 102 (between the second radial movement restricting portion 102 and the third radial movement restricting portion 103), and the other two rollers 202 And the locking of the first radial movement restricting portion 101 together, the locking force of the three rollers 202 with respect to the turntable 100 is increased, and the turntable 100 can be more reliably prevented from jumping out.

FIG. 10 is a schematic diagram showing a state when the turntable 100 in which the position of the roller 202 is different from that in FIG. 7 is shifted downward (on the opening 2a side of the heating chamber 2 shown in FIGS. 1 and 2). In FIG. 10, the lower side is the opening 2 a side of the heating chamber 2, and the upper side is the back side of the heating chamber 2.

In the roller stay 200 of FIG. 10, one arm 201 is disposed at a position facing the opening 2a side of the heating chamber 2, and the other two arms 201 are at a position opened by 60 ° to the left and right with respect to the rear direction. Has been placed.

When the turntable 100 is pulled and displaced downward in the figure (on the opening 2a side of the heating chamber 2) as shown in FIG. 10 under the test conditions of the IEC standard 60335-2-25 (subclause 22.118), One lower roller 202 is locked to the first radial movement restricting portion 101 inside the track, and the other two rollers 202 are locked to the second radial movement restricting portion 102 outside the track, respectively. The

Therefore, in the arrangement of the roller stay 200 shown in FIG. 10, the locking between one roller 202 and the first radial movement restriction unit 101, the other two rollers 202 and the second radial movement restriction unit 102, In combination, the locking force of the three rollers 202 with respect to the turntable 100 is strengthened, and the turntable 100 can be more reliably prevented from jumping out.

A straight line A3 that passes through the center of the lower roller 202 in the figure and extends in the tangential direction, and a straight line B3 that is parallel to the straight line A3 and passes through the center of gravity O of the turntable 100. When the distance L3 is assumed and the weight of the turntable 100 is M, the rotational moment for rotating the turntable 100 about the straight line A3 is M × L3, which is much larger than M × L1 in FIG.

Accordingly, by setting the weight M of the turntable 100 and the distance L3 so that the rotational moment M × L3 is larger than the rotational moment generated by the load of the container, the container slides on the turntable 100 and turns. Even if the table 100 moves to the vicinity of the lower edge in the figure, the turntable 100 does not tilt under the above test conditions.

<Comparative example>
FIG. 11 is a schematic diagram showing the top surfaces of the turntable 1100 and the roller stay 200 of the comparative example. The turntable 1100 of FIG. 11 has the same configuration as that of the turntable 100 shown in FIGS. 3 and 4 except that the first radial movement restricting portion 101 is not provided. Is attached. In addition, this comparative example is for demonstrating the heating cooker of this invention intelligibly, and is not the heating cooker of this invention.

In FIG. 11, on the back side of the turntable 1100, the three rollers 202 of the roller stay 200 are in a correct position on the track where they roll in the circumferential direction.

Next, FIG. 12 shows a schematic diagram showing a state when the turntable 1100 is displaced downward. In FIG. 12, the lower side is the opening 2 a side of the heating chamber 2, and the upper side is the back side of the heating chamber 2.

When the turntable 1100 is pulled downward in the drawing (on the side of the opening 2a of the heating chamber 2) as shown in FIG. 12 under the test conditions of the IEC standard 60335-2-25 (subclause 22.118), When one upper roller 202 exceeds the second radial movement restricting portion 102 outside the track, the other two rollers 202 are not locked anywhere.

Therefore, in this comparative example, in the test of the IEC standard 60335-2-25 (subclause la 22.118), the turntable 1100 comes off from the plurality of rollers 202 and jumps to the outside.

FIG. 13 is a longitudinal sectional view taken along line XIII-XIII in FIG. In FIG. 13, on the back side of the turntable 1100, the three rollers 202 of the roller stay 200 are in the correct positions on the track where they roll in the circumferential direction.

FIG. 14 is a longitudinal sectional view taken along line XIV-XIV in FIG. FIG. 14 shows a state in which the turntable 100 is pulled and displaced in the left direction in the drawing, and the roller 202 exceeds the second and third radial

movement restricting portions

102 and 103 outside the track.

Thus, in the above comparative example, the turntable 1100 cannot be prevented from jumping out.

On the other hand, in the microwave oven of the first embodiment, the first radial movement restricting portion 101 provided on the bottom surface of the turntable 100 and on the inner peripheral side of the track on which the plurality of rollers 202 roll in the circumferential direction. The movement of the plurality of rollers 202 in the radial direction is restricted by the second radial movement restriction portion 102 provided on the bottom surface of the turntable 100 and on the outer peripheral side of the track. The movement to the outside is restricted. As a result, when a force to pull the turntable 100 in the horizontal direction is applied, any of the plurality of rollers 202 is locked to the second radial movement restricting portion 102 outside the track, The turntable 100 can be prevented from shifting in the horizontal direction. Furthermore, when the force to pull and turn the turntable 100 in the horizontal direction increases and any of the plurality of rollers 202 exceeds the second radial movement restricting portion 102 outside the track, The roller 202 is locked to the first radial movement restricting portion 101 inside the track.

Thus, even if any one of the plurality of rollers 202 exceeds the second radial movement restricting portion 102 outside the track, the other roller 202 is the first radial movement restricting portion inside the track. By engaging with 101, the movement of the turntable 100 can be restricted. Therefore, the turntable 100 can be prevented from sliding off the heating chamber 2 with a simple configuration, and a microwave oven corresponding to IEC standard 60335-2-25 (subclause 22.118) can be provided.

Further, the third radial movement restricting portion 103 provided on the bottom surface of the turntable 100 and the outer peripheral side of the second radial movement restricting portion 102 restricts movement of the plurality of rollers 202 to the outer peripheral side. Therefore, when a force acting to pull and turn the turntable 100 in the horizontal direction is applied, even if any of the plurality of rollers 202 exceeds the second radial movement restricting portion 102 outside the track, Further, the outer third radial movement restricting portion 103 can restrict the movement of the roller 202 to the outer peripheral side, and can reliably prevent the turntable 100 from sliding off the heating chamber 2.

In addition, when the turntable 100 is pulled outward in the radial direction, at least one of the plurality of rollers 202 has moved beyond the second radial movement restricting portion 102 and then moved. The other two rollers 202 among the plurality of rollers 202 are locked to the first radial movement restricting portion 101, so that the turntable 100 can be easily prevented from sliding off the heating chamber 2.

When the turntable 100 is pulled outward in the radial direction, at least one of the plurality of rollers 202 comes into contact with the second radial movement restricting portion 102 and at the same time, The other two rollers 202 may be locked to the first radial movement restricting portion 101.

Further, by making the height H1 of the first radial movement restricting portion 101 with respect to the bottom surface of the turntable 100 lower than the height H2 of the second radial movement restricting portion 102 with respect to the bottom surface of the turntable 100, The arm 201 connecting the plurality of rollers 202 hardly interferes with the first radial movement restricting portion 101, and the degree of freedom in design increases.

Moreover, in the microwave oven provided with the main body casing 1 having the side opening door 3 that opens and closes the front opening 2a, when the turntable 100 is accidentally pulled out from the front opening 2a of the heating chamber 2 of the main body casing 1. There is a risk of falling forward.

In the microwave oven provided with the main body casing 1 having the side door 3 that opens and closes the opening 2a on the front surface of the heating chamber 2, according to the first embodiment, IEC standard 60335-2-25 (subclause 22.118) Can be easily handled, and the turntable 100 can be prevented from falling forward.

Moreover, in the microwave oven provided with the said built-in type main body casing 1, when the turntable 100 is accidentally pulled out from the opening 2a of the front surface of the heating chamber 2 of the main body casing 1, the part of the flat installation surface is ahead. There is a risk of falling directly.

Such a microwave oven provided with the built-in type main body casing 1 can easily comply with IEC standard 60335-2-25 (subclause 22.118) and prevent the turntable 100 from falling forward.

[Second Embodiment]
The microwave oven as an example of the heating cooker of the second embodiment of the present invention has the same configuration as the microwave oven of the first embodiment except that there is no third radial

movement restricting portion

103, 1 to 10 are referred to.

As shown in FIG. 7, the microwave oven according to the second embodiment has an upper portion in the figure when the turntable 100 is pulled and displaced downward in the figure (the opening 2a side of the heating chamber 2 shown in FIGS. 1 and 2). When one of the rollers 202 exceeds the second radial movement restricting portion 102 outside the track, the other two rollers 202 are respectively locked to the first radial movement restricting portion 101 inside the track. The

Further, when the turntable 100 is pulled and displaced downward in the drawing (on the opening 2a side of the heating chamber 2) as shown in FIG. 10 under the test conditions of the IEC standard 60335-2-25 (subclause 22.118), One middle and lower roller 202 is locked to the first radial movement restricting portion 101 inside the track, and the other two rollers 202 are locked to the second radial movement restricting portion 102 outside the track, respectively. Is done.

According to the microwave oven of the second embodiment, the turntable 100 can be prevented from sliding off the heating chamber 2 with a simple configuration.

The microwave oven of the second embodiment has the same effect as the microwave oven of the first embodiment except for the effect by the third radial movement restricting portion 103.

[Third Embodiment]
FIG. 15 shows an upper surface of a turntable 400 of a microwave oven as an example of a heating cooker according to the third embodiment of the present invention. The microwave oven according to the third embodiment has the same configuration as the microwave oven according to the first embodiment except that the second and third radial

movement restriction portions

102 and 103 are not provided. 10 is used. In FIG. 15, the same components as those in FIGS. 1 to 10 are denoted by the same reference numerals.

FIG. 15 shows the top surface of the turntable 400. In FIG. 15, R <b> 1 indicates the ridgeline of the first radial movement restricting portion 101 shown in FIG. 3 on the back surface of the turntable 400. Here, the ridgeline R1 is a locus connecting the maximum height positions in the circumferential direction of the first to third radial movement restricting portions 101.

In FIG. 15, on the back side of the turntable 400, the three rollers 202 of the roller stay 200 are in the correct positions on the track where they roll in the circumferential direction.

In the microwave oven of the third embodiment, under the test conditions of the IEC standard 60335-2-25 (subclause 22.118), the turntable 400 is lowered from the state of FIG. 15 as shown in FIG. 16 (FIGS. 1 and 2). 2 of the heating chamber 2 shown in FIG. 2), two of the three rollers 202 are locked to the first radial movement restricting portion 101 inside the track.

FIG. 17 is a schematic diagram showing a state when the turntable 400 in which the position of the roller 202 is different from that in FIG. In FIG. 17, the same components as those in FIGS. 1 to 10 are denoted by the same reference numerals, the lower side is the opening 2a side of the heating chamber 2, and the upper side is the back side of the heating chamber 2.

In the roller stay 200 of FIG. 17, one arm 201 is arranged at a position facing the opening 2 a side of the heating chamber 2, and the other two arms 201 are at a position opened by 60 ° to the left and right with respect to the rear direction. Has been placed.

When the turntable 400 is pulled downward in the drawing (on the opening 2a side of the heating chamber 2) as shown in FIG. 17 under the test conditions of the IEC standard 60335-2-25 (subclause 22.118), One lower roller 202 is locked to the first radial movement restricting portion 101 inside the track.

According to the microwave oven of the third embodiment, the turntable 100 can be prevented from sliding off the heating chamber 2 with a simple configuration.

In the case of FIG. 16, a straight line A2 extending through the center of one of the three rollers 202 in the figure and extending in the tangential direction, and parallel to the straight line A2 and passing through the center of gravity O of the turntable 400. Assuming that the distance from the straight line B2 is L2 and the weight of the turntable 400 is M, the rotational moment for rotating the turntable 400 about the straight line A2 is M × L2.

On the other hand, in the case of FIG. 17, a straight line A3 that passes through the center of one of the three rollers 202 and extends in the tangential direction, and is parallel to the straight line A3 and the center of gravity O of the turntable 400. Assuming that the distance from the straight line B3 passing through L3 is L3 and the weight of the turntable 400 is M, the rotational moment for rotating the turntable 400 around the straight line A3 is M × L3, which is much shorter than that in FIG. Big.

The microwave oven of the third embodiment has the same effects as the microwave oven of the first embodiment except for the effects of the second and third radial

movement restriction units

102 and 103.

[Fourth Embodiment]
The microwave oven as an example of the heating cooker according to the fourth embodiment of the present invention is the first except that the height of the first radial movement restricting portion is different from the height of the second radial movement restricting portion. It has the same configuration as the microwave oven of the embodiment.

The microwave oven according to the fourth embodiment is a first annular ring that regulates the movement of the plurality of rollers radially inward to the bottom surface of the turntable and the inner periphery of the track on which the plurality of rollers roll in the circumferential direction. The radial direction movement restricting portion is provided concentrically with the same center as the turntable.

In addition, an annular second radial movement restricting portion for restricting movement of the plurality of rollers radially outward is provided concentrically with the same center as the turntable on the bottom surface of the turntable and on the outer peripheral side of the track. ing.

The height of the first radial movement restricting portion with respect to the bottom surface of the turntable is higher than the height of the second radial movement restricting portion with respect to the bottom surface of the turntable. Thereby, the locking force between the plurality of rollers and the first radial movement restricting portion is increased.

In the fourth embodiment, the arm connected to the roller does not contact or interfere with the first radial movement restricting portion.

The microwave oven of the fourth embodiment has the same effect as the microwave oven of the first embodiment.

In the first to fourth embodiments, the microwave oven as the cooking device has been described. However, the present invention may be applied to other cooking devices such as a microwave oven.

In the first to fourth embodiments, the microwave oven provided with the roller stay 200 having the three arms 201 extending radially has been described. However, the configuration of the roller stay is not limited to this, and the annular connecting member is used. A cooking device in which a plurality of rollers are rotatably attached may be used.

Further, in the first to fourth embodiments, the annular flange portions provided on the bottom surface of the turntable 100 and projecting downward are the first to third radial movement restricting portions 101 to 103. The third radial movement restricting part is not limited to this, and may be another form of radial movement restricting part.

Although specific embodiments of the present invention have been described, the present invention is not limited to the first to fourth embodiments, and various modifications can be made within the scope of the present invention. For example, a suitable combination of the contents described in the first to fourth embodiments may be used as one embodiment of the present invention.

The invention and the embodiment are summarized as follows.

The cooking device of this invention is
Heating chamber 2;
A plurality of rollers 202 arranged on the bottom surface of the heating chamber 2 at intervals in the circumferential direction;
A connecting member 201 for connecting the plurality of rollers 202;
A turntable 100 mounted on the bottom surface of the heating chamber 2 via the plurality of rollers 202;
The turntable 100 is
A first radial movement restriction that is provided on the bottom surface of the turntable 100 and on the inner circumferential side of a track on which the plurality of rollers 202 roll in the circumferential direction and restricts the movement of the plurality of rollers 202 inward in the radial direction. It has the part 101.

According to the above configuration, the radial direction of the plurality of rollers 202 is achieved by the first radial movement restricting portion 101 provided on the bottom surface of the turntable 100 and on the inner peripheral side of the track on which the plurality of rollers 202 roll in the circumferential direction. Restrict inward movement. For example, when the turntable 100 is displaced due to a pulling force acting on the turntable 100 in the horizontal direction, the roller 202 is locked to the first radial movement restricting portion 101 inside the track. In this way, the movement of the turntable 100 can be restricted. Therefore, it is possible to prevent the turntable 100 from sliding off the heating chamber 2 with a simple configuration.

Moreover, in the heating cooker of one embodiment,
The turntable 100 is
A second radial movement restricting portion 102 is provided on the bottom surface of the turntable 100 and on the outer peripheral side of the track to restrict the movement of the plurality of rollers 202 outward in the radial direction.

According to the embodiment, the diameters of the plurality of rollers 202 are provided by the first radial movement restricting portion 101 provided on the bottom surface of the turntable 100 and on the inner peripheral side of the track on which the plurality of rollers 202 roll in the circumferential direction. While the movement to the inner side in the direction is restricted, the movement of the plurality of rollers 202 to the outer side in the radial direction is restricted by the second radial movement restriction part 102 provided on the bottom surface of the turntable 100 and the outer peripheral side of the track. For example, when a force that pulls the turntable 100 in the horizontal direction is applied, any of the plurality of rollers 202 is locked to the second radial movement restricting portion 102 outside the track, and When a strong force is applied and the roller 202 exceeds the second radial movement restricting portion 102, the other rollers 202 are locked to the first radial movement restricting portion 101 inside the track. Thus, even if any one of the plurality of rollers 202 exceeds the second radial movement restricting portion 102 outside the track, the other roller 202 is the first radial movement restricting portion inside the track. By engaging with 101, the movement of the turntable 100 can be restricted.

Moreover, in the heating cooker of one embodiment,
The turntable 100 is
A third radial movement restricting portion 103 provided on the bottom surface of the turntable 100 and on the outer peripheral side of the second radial movement restricting portion 102 and restricting movement of the plurality of rollers 202 toward the outer peripheral side is provided. Have.

According to the above embodiment, the third radial movement restricting portion 103 provided on the bottom surface of the turntable 100 and on the outer peripheral side of the second radial movement restricting portion 102 moves toward the outer peripheral side with respect to the plurality of rollers 202. Therefore, when a force for pulling the turntable 100 in the horizontal direction is applied, any of the plurality of rollers 202 causes the second radial movement restricting portion 102 outside the track to move. Even if it exceeds, the movement of the roller 202 to the outer peripheral side can be restricted by the third radial movement restricting portion 103 on the outer side, and the turntable 100 can be reliably prevented from sliding off the heating chamber 2.

Moreover, in the heating cooker of one embodiment,
At the same time as or after the turntable 100 is pulled radially outward and at least one of the plurality of rollers 202 contacts the second radial movement restricting portion 102, the plurality of the plurality of rollers 202. The other rollers 202 of the rollers 202 are configured to contact the first radial movement restricting portion 101.

According to the embodiment, when the turntable 100 is pulled outward in the radial direction, at least one of the plurality of rollers 202 comes into contact with the second radial movement restricting portion 102 and at the same time, The other roller 202 among the rollers 202 is locked to the first radial movement restricting portion 101. Alternatively, when the turntable 100 is pulled outward in the radial direction, after at least one of the plurality of rollers 202 comes into contact with the second radial movement restricting portion 102, The other roller 202 is locked to the first radial movement restricting portion 101. Thereby, it is possible to easily prevent the turntable 100 from sliding off the heating chamber 2.

Moreover, in the heating cooker of one embodiment,
Each of the first and second radial

movement restricting portions

101 and 102 of the turntable 100 is an annular flange projecting downward,
The height of the first radial movement restricting portion 101 relative to the bottom surface of the turntable 100 is lower than the height of the second radial movement restricting portion 102 relative to the bottom surface of the turntable 100.

According to the above embodiment, the height of the first radial movement restricting portion 101 relative to the bottom surface of the turntable 100 is made lower than the height of the second radial movement restricting portion 102 relative to the bottom surface of the turntable 100. The connecting member 201 that connects the plurality of rollers 202 hardly interferes with the first radial movement restricting portion 101, and the degree of freedom in design increases.

Moreover, in the heating cooker of one embodiment,
The heating chamber 2 includes a main body casing 1 disposed therein,
The main casing 1 has a laterally opening door 3 that opens and closes an opening 2 a on the front surface of the heating chamber 2.

When the turntable 100 is accidentally pulled out from the front opening 2a of the heating chamber 2 of the main casing 1, in the heating cooker provided with the main casing 1 having the side opening door 3 for opening and closing the front opening 2a. There is a risk of falling forward.

According to the above embodiment, in the cooking device provided with the main casing 1 having the side opening door 3 that opens and closes the opening 2a on the front surface of the heating chamber 2, the IEC standard 60335-2-25 (subclause 22.118) is used. This can be easily handled, and the turntable 100 can be prevented from falling forward.

Moreover, in the heating cooker of one embodiment,
The main body casing 1 is a built-in type.

In the cooking device provided with the built-in type main body casing 1, when the turntable 100 is accidentally pulled out from the opening 2a on the front surface of the heating chamber 2 of the main body casing 1, there is no portion of a flat installation surface in the front. There is a risk of falling directly.

According to the above embodiment, the cooking device provided with such a built-in type main body casing 1 can easily comply with IEC standard 60335-2-25 (subclausela22.118) and move forward of the turntable 100. Can be prevented from falling.

DESCRIPTION OF SYMBOLS 1 ... Main body casing 2 ... Heating chamber 2a ... Opening 3 ... Side opening door 4 ... Glass 5 ... Operation panel 10 ... Bottom panel 100,400 ... Turntable 101 ... 1st radial direction movement control part 102 ... 2nd radial direction movement Restriction part 103 ... 3rd radial direction movement restriction part 200 ... Roller stay 201 ... Arm 202 ... Roller 301 ... Rotating shaft 302 ... Gear box 303 ... Motor

Claims

A heating cabinet;
A plurality of rollers arranged at intervals in the circumferential direction on the bottom surface of the heating chamber;
A connecting member for connecting the plurality of rollers;
A turntable mounted on the bottom surface of the heating chamber via the plurality of rollers,
The turntable is
A first radial movement restricting portion that is provided on a bottom surface of the turntable and on an inner peripheral side of a track on which the plurality of rollers roll in a circumferential direction, and restricts movement of the plurality of rollers inward in the radial direction; A cooking device characterized by that.
The heating cooker according to claim 1, wherein
The turntable is
A cooking device comprising a second radial movement restricting portion that is provided on a bottom surface of the turntable and on an outer peripheral side of the track, and restricts movement of the plurality of rollers outward in the radial direction.
The cooking device according to claim 2,
The turntable is
A third radial movement restricting portion is provided on the bottom surface of the turntable and on the outer peripheral side of the second radial movement restricting portion, and restricts movement of the plurality of rollers to the outer peripheral side. A heating cooker.
In the heating cooker according to claim 2 or 3,
At the same time as or after the turntable is pulled radially outward and at least one of the plurality of rollers comes into contact with the second radial movement restricting portion, of the plurality of rollers. A heating cooker characterized in that the other roller is configured to contact the first radial movement restricting portion.
In the heating cooker according to any one of claims 1 to 4,
The heating chamber includes a main body casing disposed inside,
The said main body casing has a side opening door which opens and closes opening of the front surface of the said heating chamber, The heating cooker characterized by the above-mentioned.