JPH0625613B2 - Heating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a microwave oven, a microwave oven, etc., in which a heating container is installed in a heating chamber, and
For example, the present invention relates to a heating device in which ingredients such as bread can be put and kneading to baking can be automatically performed.

<Prior Art> An example in which a container is installed in a microwave oven and bread is automatically kneaded and baked is already seen in the market as a product. In this example, in order to position the heating container on the bottom wall of the heating chamber, the container bottom and the bottom wall are provided with annular metal fittings respectively fitted to each other, the heating container is inserted from above, and both the metal fittings are rotated. It is locked.

In addition, the center of the ring on the bottom wall of the heating chamber is upward,
Downward sawtooth gears (face gears) are provided at the center of the circular ring at the bottom of the container, and the gears for kneading the bread dough are transmitted by vertically engaging these gears.

<Problems to be Solved by the Invention> As described above, the heating container for bread making using the microwave oven has the following drawbacks.

(1) When the container is attached and detached, it is necessary to move the container upward, and if the baked bread protrudes from the upper edge of the container, the upper surface of the pan hits the ceiling of the heating chamber when the container is removed.
Therefore, the container has a large base area, and as a result, only flat and short bread can be made.

(2) When the centers of the two gears are deviated, slippage occurs between the tooth surfaces, which causes abnormal noise.

(3) Therefore, it is necessary to tightly fit the two annular metal fittings together, and as a result, a great deal of force is required to attach and detach the container. There is.

In view of the above, it is an object of the present invention to provide a heating device that can easily attach a heating container to a heating chamber and can smoothly transmit power to the stirring mechanism of the heating container.

In addition, the connecting mechanism for power transmission to the stirring mechanism does not have to be equipped with a heating container but also serves as a rotational force transmitting means to the tray used when directly heating the object to be heated, which reduces the number of parts. It is also intended to be provided.

Another object of the present invention is to provide a heating device in which the gears of the stirring mechanism and the coupling mechanism can be properly meshed when the heating container is attached.

Another object of the present invention is to provide a heating device having a locking mechanism that can maintain the connection between the stirring mechanism and the connecting mechanism when the heating container is attached.

<Means for Solving Problems> A means for solving problems according to the present invention includes a heating container 14 for accommodating an object to be heated, a tray 9 for mounting an object to be heated, and a tray 9 for accommodating the object to be heated. And a rotary support 11 for rotating the rotary table 11 around the central axis 10, and the heating support 14 and the rotary support 11 of the bottom wall 8 of the heating chamber 3 and the heating container 14 are selectively removable. At the bottom surface of the heating container 14, a pair of left and right container bases 31 are provided so as to project, and the heating container 14 is sandwiched between the bottom walls 8 of the heating chamber 3 and the heating container 14 to the heating chamber 3. Is provided with a guide table 30 for moving and guiding from the above.
The front end of the opening side of each of the left and right sides and the upper and lower surfaces is formed in a tapered shape, and the protruding pieces 33 are provided on both the left and right sides of the guide base 30.
Ribs 40, 4 which are formed to project outward and are slidable along the upper and lower surfaces of the projecting piece 33 on the inner wall of the container base 30.
1, 42 are formed, and the rotation driving mechanism 12 for driving the stirring mechanism 15 to rotate and the connecting mechanism 1 for transmitting the driving force from the rotation driving mechanism 12 to the stirring mechanism 15 are formed.
3 is provided, the stirring mechanism 15 includes a transmission gear 29 fixed to the lower end of a stirring shaft 27 that penetrates the bottom wall 8 of the heating container 14, and the coupling mechanism 13 includes the bottom wall 8 of the heating chamber 3.
And a connecting gear 25 fixed to the upper end of the central shaft 10 that is rotatably supported by the center shaft 10 and penetrates the guide base 30.

Further, the line direction connecting the centers of the transmission gear 29 of the stirring mechanism 15 and the connecting gear 25 of the connector 13 is different from the moving direction of the heating container 14.

Further, the stirring mechanism 15 of the heating container 14 and the connection mechanism 1
A locking mechanism 17 for positioning and fixing the heating container 14 in the heating chamber 14 in a state of being connected to the heating container 14 is provided, and the locking mechanism 17 includes a locking lever 51 supported by the heating container 14 so as to be movable up and down. A lock hole 53 formed in the guide base 30 for releasably engaging the lock lever 51, a spring 54 for urging the lock lever 51 downward, and a step portion formed on the projecting pieces 33 on both sides of the guide base 30. 37,3
8 and a pair of left and right ribs 40, 41, 4 of the container base 31 contacting the upper and lower surfaces of the step portions 37, 38 and the side surface of the guide base 30.
2 and a stopper 45 of the guide base 30 for restricting the forward movement of the ribs 40, 41, 42. The lower end of the lock lever 51 is formed in a wedge shape corresponding to the taper of the front end of the guide base 30.

Further, the rotation drive mechanism 12 and the coupling mechanism 1 for the heating container
3 also serves as a rotation driving mechanism and a connecting mechanism for the tray, and the rotary support 11 has a connecting mechanism 13 at the center thereof.
An engaging ring 56 is formed on the connecting gear 25 of FIG.

<Operation> In the above problem solving means, when the heating container 14 is used, food material is put in the heating container 14 and the bottom wall 8 of the heating chamber 3 is slid and pushed in. Moves along the taper of the guide board 30. Then, the overhanging side 33 and the ribs 40, 41, 42 are engaged with each other, and the container base 31 is restricted in the vertical and horizontal directions, and the bottom wall 8 of the heating chamber 3 is controlled.
Placed on.

When the heating container 14 is pushed in, when the line B connecting the centers of both gears is aligned with the moving direction C of the heating container 14 as shown in FIG. 3 (a), the tips of the teeth come into contact with each other as shown in the figure. If this is the case, pushing it further is difficult. However, the figure
As shown in (b), when the positional relationship between the gears 25 and 29 is determined so that the line direction B connecting the center lines with the moving direction C forms an angle α, the heating container can be heated even by the contact of the tooth tips. When 14 is pushed further in, a rotational moment is applied to both gears 25 and 29, and meshing becomes easier.

Further, when the heating container 14 is pushed to the end, the rib 42 that has moved along the stepped portion 38 of the guide base 30 comes into contact with the stopper 45 and cannot move forward any further.

At this time, the lock lever 51, which has been pushed up by riding on the taper of the guide table 30, is fitted into the lock hole 53,
The rock lever 51 and the rib 42 eliminate back and forth rattling. Further, the ribs 40 and 41, the side surface of the guide base 30 and the overhanging piece 33 eliminate vertical, horizontal rattling. As described above, the heating container 14 is locked by the container base 31, and the transmission of the power can be surely performed without the meshing of the coupling gear and the transmission gear being disengaged.

Since the connecting mechanism is gear-shaped, one connecting mechanism 13 is used to rotate the transmission gear 29 for the stirring blades for bread making and the like, and the rotating support 11 is used to rotate the transmitting gear 29. It enables dual use. Therefore, simplification of the mechanism can be realized.

<Examples> Examples of the present invention will be described below with reference to the drawings. FIG. 1 is a front sectional view of a heating device showing an embodiment of the present invention, and FIG.
The figure is a perspective view showing the heating container and the guide mechanism, and FIG. 3 (a) (b).
Shows the relationship between the connecting gear and the transmission gear, FIGS. 4 and 5 are cross-sectional views of the rotary drive mechanism part, FIG. 6 is a plan view showing the meshing state between the rotary support of the tray and the connecting gear, and FIG. Is a side view of the heating container, FIGS. 8 and 9 are sectional views of the locking mechanism, FIG. 10 is a bottom view of the heating container and the guide, FIG. 11 is a side view thereof, and FIG. 12 is a locking mechanism in a locking state. Is a bottom view, FIG. 13 is a side view thereof, and FIG. 14 is a perspective view showing the entire heating device.

The heating device according to the present invention is a microwave oven or an oven range, and can be equipped with a heating container for bread making, and is configured as follows.

That is, as shown in the figure, a box-shaped heating device main body 1, a heating chamber 3 formed in the heating device main body 1 and having an opening 2 for taking in and out an object to be heated from a side surface, and a door for opening and closing the opening 2. 4, heating means 7 including a magnetron 5 and a waveguide 6 for heating an object to be heated in the heating chamber 3, and an object to be heated detachably mounted on a bottom wall 8 of the heating chamber 3. Mounting tray 9, rotation support 11 for rotating the tray 9 around the central axis 10, and rotation support 11
A rotary drive mechanism 12 for rotationally driving the motor and a coupling mechanism 13 for transmitting the driving force from the rotary drive mechanism 12 to the rotary support 11.

And in this invention, the heating container 14 for storing the to-be-heated object which is detachably mounted in the said heating chamber 3, and this heating container 14
A stirring mechanism 15 arranged inside and a guide mechanism 16 for horizontally guiding the heating chamber 3 of the heating container 14 from the opening 2
And the heating container 14 and its stirring mechanism 15 and connection mechanism 1
Lock mechanism 17 for positioning and fixing in the connected state of 3
And are provided.

The rotation drive mechanism 12 serves both for rotating the tray and for rotating the stirring mechanism. As shown in FIG. 1, an electric motor 20 built into the heating device main body 1 and a motor shaft of the motor 20 are provided. A fixed motor pulley 21, a drive pulley 22 fixed to the lower end of a central shaft 10 rotatably supported by the bottom wall 8 of the heating chamber 3, and a belt 23 wound between the pulleys 21 and 22. Consists of.

The connecting mechanism 13 is composed of a connecting gear 25 fixed to the upper end of the central shaft 10 in the heating chamber 3 so as to be able to engage with both the rotary support 11 and the lower end transmitting gear 29 of the stirring mechanism 15.

The heating container 14 is a box-shaped container having an open upper surface, and is used for putting bread ingredients inside, stirring and kneading with a stirring mechanism 15, and then heating.

The stirring mechanism 15 is fitted and fixed to a vertical stirring shaft 27 penetrating the bottom wall of the heating container 14, a stirring blade 28 fixed to the upper end of the stirring shaft 27, and a lower end of the stirring shaft 27. And a transmission gear 9.

Then, the transmission gear 29 of the stirring mechanism 15 and the coupling mechanism 1
The direction of the line connecting the center with the connecting gear 25 of 3 is the heating container 1
4 is different from the moving direction, and the angle α at which they intersect is 0
The angle is ~ 90 °.

The guide mechanism 16 includes a guide base 30 fixed to the bottom wall 8 of the heating chamber 3 below the connecting gear 25, and a pair of left and right container bases 31 protruding downward from the bottom surface of the heating container 14. It is equipped with

As shown in FIGS. 10 and 11, the guide base 30 is composed of a substantially rectangular support portion 32, and overhanging pieces 33 formed on both right and left sides of the support portion 32 so as to project outward. The front end of the supporting portion 32 is formed with tapered surfaces 35 on the left and right sides of the heating container 14 to facilitate insertion of the container base 31, and as shown in FIG. In addition, the projecting piece 33 has a first step portion 37 and a second step portion 38 formed in a step-like manner in order to exert the locking function of the heating container 14.

On the other hand, on the inner wall of the container base 31, three ribs 40, 41, 42 for guiding along the projecting piece 33 are formed. The first rib 40 protrudes from the rear upper end of the inner wall of the container table 31 and is slidable along the upper surface 43 of the overhanging piece 33. The second rib 41 projects substantially at the center of the inner wall of the container base 31, and is slidable along the lower surface of the first step portion 37 of the overhanging piece 33.
8 is arranged so as to abut the stepped taper portion 44.
The third ribs 42 are arranged on the first ribs 40 at the lower part of the inner wall of the container base 31, are slidable along the second step portion 38 of the overhanging piece 33, and the rear end portion of the overhanging piece 33. The stopper 45 can be brought into contact with the stopper 45. Further, the front end of the first step portion 37 is formed with a taper 47 to allow the intervention of the second rib 41. The inner ends of these ribs 40, 41, 42 are also slidable on the side walls of the support portion 32, so that the heating container 14 is positioned in the vertical and horizontal directions.

And, the locking mechanism 17 is, as shown in FIGS.
A lever holding ring 49 formed on the lower end front surface of the heating container 14.
And a lock lever 51 having an inverted L-shape in a side view, which is vertically movably fitted in a vertical center hole 50 of the retaining ring 49, and a lower end wedge portion 52 of the lever 51, so as to be engageable and disengageable. A lock hole 53 formed in the center of the support portion 32 of the guide base 30, a coil spring 54 for urging the lock lever 51 downward, and first, second and third ribs 40, 41 of the guide mechanism 16. 42 and first and second step portions 37, 38 and the like. The coil spring 54 includes the upper surface of the wedge portion 52 of the lever 51 and the heating container 14 above the retaining ring 49.
Is installed between the wall and

Incidentally, as shown in FIG. 6, the rotary support 11 has an engaging ring 5 which can be fitted to the connecting gear 25 at the center thereof from above and below.
6 is formed, and the connecting gear 25 is formed on the inner wall of the engagement ring 56.
An engaging claw 57 that engages with each other is formed, and three radial support rods 58 to 60 project from the outer peripheral surface of the engaging ring 56, and the bottom wall 8 of the heating chamber 3 rolls at the tip thereof. At the same time, a support roller 61 that abuts on the bottom surface 9a of the tray 9 and transmits a rotational force to the bottom surface 9a is rotatably supported. The locus A of the support roller 6 is shown in FIG.

In the above structure, the high frequency oscillated by the magnetron 4 is supplied to the heating chamber 3 through the waveguide 3, and
The food inside or the heating container 14 is heated. Heating container 1
4 is used, food material is put in the heating container 14, and the bottom wall 8 of the heating chamber 3 is slid and pushed in the direction of the arrow, so that the container base 31 of the heating container 14 has the tip tapered portion 35 of the guide base 30. Proceed along, and the left and right overhanging pieces 33 of the guide board 30
The ribs 40, 41, 42 fix the movement in the vertical and horizontal directions. Then, when the heating container 14 is pushed all the way to the end, the stopper 45 of the guide table 30 and the third rib 42 of the container table 31 abut and stop. At this time, the transmission gear 29
And the coupling gear 25 mesh with each other, and the lock lever 51 fixed to the heating container 14 so as to be vertically slidable is
It fits into the lock hole 53. Therefore, the heating container 14
Prevents the wheel from escaping forward due to the rotation of the gears 25 and 29.

FIGS. 3 (a) and 3 (b) are views showing the meshing of the transmission gear 29 and the coupling gear 25. As shown in FIG. 3 (a), the line B connecting the centers of both gears and the moving direction of the heating container 14 are shown. When C is matched, as shown in the figure, when the tooth tips are brought into contact with each other, further pushing is difficult. However, if the positional relationship between both gears 25 and 29 is determined so that the line direction B connecting the center lines to the moving direction C forms an angle α with respect to the moving direction C as shown in FIG. Even if the heating container 14 is further pushed in, a rotational moment is applied to both gears 25 and 29, and the meshing becomes easy. It should be noted that it is more advantageous to increase α in the range of 0 to 90 °.

Next, the operation of the locking mechanism 17 will be described in detail.
When you slide the to the container base 31, first the first rib 4
0 slides over the guide 30 and then the third rib 42 stops at the stopper 45 along the first stepped taper 44. At the same time, the second rib 41 also advances along the taper 47 and stops. At this time, the heating container 14 is free from play in the upper, lower, left, and right directions due to the ribs 40, 41, 42.

On the other hand, on the upper side of the guide base 30, as shown in FIGS. 8 and 9, the lock lever 51 rides on the taper 36 of the guide base 30 and the third rib 42 stops at the stopper 45 and at the same time the lock hole 53.
The lock lever 51 is engaged by the action of the coil spring 54. This state is shown in FIGS. In FIG. 13, the ribs 40, 41 and 42 eliminate looseness on the upper and lower sides and the left and right sides. Also, the ribs 42 and the lock lever 51 eliminate back and forth rattling, and the heating container 14 is fixed.

Therefore, by changing the installation method of the heating container 14 to the cooking method of fixing the heating container 14 to the heating chamber 3, it is possible to take in and out a container having a larger capacity than the storage capacity. Further, the use of the taper and the action of the coil spring can ensure the smooth insertion and fixing.

Incidentally, conventionally, the rotational force transmission mechanism for rotating the tray 9 has the rotary support 11 placed directly above the coupling mechanism (coupling), and the tray 9 placed thereon. However, with the shape of this coupling mechanism, it was impossible to rotate the stirring mechanism 15 of the present invention because there were few engaging portions.

In the present invention, by changing the conventional connecting mechanism into a gear shape, one connecting mechanism 13 rotates the transmission gear 29 for the stirring blades for bread making etc. and the rotating support 11. It enables the combined use of both types. That is, the power transmission to the stirring mechanism 15 when the heating container 14 is attached causes the motor 20 to rotate the motor pulley 21 at the tip of the shaft, and at the same time transmits the rotation to the belt 23 to rotate the drive pulley 22. By the rotation of the pulley 22, the rotation is transmitted from the coupling gear 25 at the tip of the central shaft to the transmission gear 29, and the stirring blade 28 at the tip is rotated.

Next, when the tray 9 is placed and used, the motor 2
The rotation path transmitted from 0 to the connecting gear 25 is the same as the above, but the engaging pawl 57 of the rotary support 11 is provided on the connecting gear 25.
Engage. Then, the rotation support 11 is rotated, and the tray 9 thereon is also rotated. In addition, it is advantageous in operation that the number of engaging claws 57 is set to be an integral fraction of the number of gear teeth.

The present invention is not limited to the above embodiments, and it goes without saying that many modifications and changes can be made to the above embodiments within the scope of the present invention.

For example, a heater may be used as a heat source for heating (a heater is not shown), and a microwave absorbing heat generating film (silicon carbide film) is formed on the surface of the heating container 14 to promote heat generation. You may.

Further, instead of the lock lever 51 of the lock mechanism 17,
The engaging ball 65 as shown in FIG. 15 may be configured to engage with the concave portion 66 of the guide base 30 in a disengageable manner.

Further, as shown in FIG. 16, the guide mechanism 16 may be configured by combining an L-shaped container base 31 and a pair of inverted L-shaped guide bases 30.

<Effects of the Invention> As is apparent from the above description, according to the present invention, the container base of the heating container is placed on the bottom wall of the heating chamber when the food material is put into the heating container and heated by stirring or only heating. Even if the heating container is tilted, the container can be inserted smoothly by simply sliding it along the guide and pushing it in, and the overhanging ribs ensure that the container is securely guided to the specified position. Can be easily mounted.

Furthermore, by setting the line connecting the centers of the transmission gear of the stirring mechanism and the coupling gear of the coupling mechanism so that they do not coincide with the mounting direction of the container and form an appropriate angle, when engaging the gears, Even if the tooth tips come into contact with each other, a rotational force can be applied to the gear, and the gear can be pushed in so that the gear meshes properly.

Further, by providing the lock mechanism, the heating container is positioned with respect to the container base by the lock lever and the rib, and it is possible to prevent rattling in the front, rear, up, down, left and right. Therefore, the meshing of the coupling gear and the transmission gear does not come off,
Reliable power transmission becomes possible.

Moreover, since the lock lever has a wedge-shaped portion that contacts the guide base, when the heating container is inserted into the heating chamber, it is pushed up by the taper of the guide base and the lock lever is pulled or damaged or inserted. It prevents it from becoming impossible.

Furthermore, since the connecting mechanism is gear-shaped, one connecting mechanism can be used both for the gear system for rotating the transmission gear for the stirring blade for bread making and for the connecting system for rotating the tray rotary support. If it becomes possible and the mechanism can be simplified, it has an excellent effect.

[Brief description of drawings]

FIG. 1 is a front sectional view of a heating device showing an embodiment of the present invention, FIG. 2 is a perspective view showing the heating container and a guide mechanism, and FIG. 3 (a) is a center of a connecting mechanism and a transmission gear. A plan view showing a state in which the line direction connecting the lines is parallel to the moving direction of the heating container.
FIG. 4 (b) is a plan view showing a state in which the line direction connecting the centers of the connecting mechanism and the transmission gear is in a direction different from the moving direction of the heating container, and FIG. 4 is a connection between the stirring mechanism of the heating container and the rotation drive mechanism. FIG. 5 is a side sectional view showing a state, FIG. 5 is a side sectional view showing a connected state of the tray and the rotation driving mechanism, and FIG. 6 is a plan view showing an interlocking state of the rotary support of the tray and the connecting gear, FIG. Is a side view of the heating container, FIG. 8 is a side sectional view showing the locking mechanism in a non-locking state, FIG. 9 is a side sectional view showing the locking state of the locking mechanism, and FIG. 10 is a heating container and a guide. FIG. 11 is a bottom view showing the guide mechanism and the locking mechanism, FIG. 11 is a side view thereof, FIG. 12 is a bottom view of the locking mechanism in a locked state, FIG. 13 is a side view thereof, and FIG. 14 is a perspective view showing the entire heating device. FIG. 15 and FIG. 15 are sectional views showing another embodiment of the locking mechanism, and FIG. Is a perspective view showing another embodiment of a guide mechanism. 1: Heating device main body, 2: Opening, 3: Heating chamber, 4: Door,
5: Magnetron, 6: Waveguide, 7: Heating means, 8: Bottom wall, 9: Tray for placing object to be heated, 10: Central axis, 11: Rotation support, 12: Rotation drive mechanism, 13: Connection mechanism 1
4: heating container, 15: stirring mechanism, 16: guiding mechanism, 1
7: locking mechanism, 25: connecting gear, 27: stirring shaft, 2
8: stirring blade, 29: transmission gear, 56: engaging ring, 57: engaging claw.

Claims (4)

[Claims] 1. A heating chamber comprising: a heating container for housing an object to be heated, which has an agitating mechanism installed therein; a tray for placing the object to be heated; and a rotary support for rotating the tray around a central axis. In a heating device in which a rotating support and a tray and the heating container are selectively attachable / detachable to the bottom wall of the heating container, a pair of left and right container stands are projectingly provided on the bottom surface of the heating container, and the bottom wall of the heating chamber is provided. A guide base is provided which is sandwiched between the container bases and horizontally guides the heating container to the heating chamber from its side opening, and the opening-side front end of the guide base is tapered on both left and right sides and upper and lower surfaces. Overhanging pieces are formed on both left and right sides of the guide stand so as to project outward, and ribs that are slidable along the upper and lower surfaces of the overhanging piece are formed on the inner wall of the container stand to drive the stirring mechanism to rotate. Rotation drive mechanism for the same and the rotation drive machine And a communication mechanism for transmitting the driving force from the stirring mechanism to the stirring mechanism, the stirring mechanism is provided with a transmission gear fixed to the lower end of the stirring shaft penetrating the bottom wall of the heating container, the coupling mechanism, A heating device comprising a connecting gear fixed to an upper end of a central shaft rotatably supported by a bottom wall of the heating chamber and penetrating the guide base. 2. The heating device according to claim 1, wherein a line direction connecting the centers of the transmission gear of the stirring mechanism and the coupling gear of the coupling mechanism is different from the moving direction of the heating container. 3. A locking mechanism is provided for positioning and fixing the heating container in the heating chamber in a state where the stirring mechanism and the coupling mechanism of the heating container are connected, and the locking mechanism is supported by the heating container so as to be vertically movable. A lock lever, and a lock hole formed in a guide for engaging and disengaging the lock lever,
A spring for urging the lock lever downward, a step portion formed on the projecting pieces on both sides of the guide base, and a pair of left and right ribs of the container base abutting the upper and lower surfaces of the step portion and the side surface of the guide base,
2. The heating device according to claim 1, wherein the heating device comprises a stopper of a guide for restricting forward movement of the rib, and a lower end of the lock lever is formed in a wedge shape corresponding to a taper of a front end of the guide. 4. A heating container for accommodating an object to be heated having a stirring mechanism, a tray for placing the object to be heated, and a rotary support for rotating the tray around a central axis. In a heating device in which a rotary support and a tray and the heating container can be selectively attached to and detached from the bottom wall of the chamber, the rotation driving mechanism and the connecting mechanism for the heating container also serve as the rotation driving mechanism and the connecting mechanism for the tray. The heating device according to claim 1, wherein the rotary support has an engaging ring formed at the center thereof so as to be vertically fittable with the connecting gear of the connecting mechanism.