JP2010127561A - Drawer type heating cooker with turn table mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drawer-type microwave oven with a turn table as an uniform heating mechanism having visual effect and to improve usability by keeping a ceiling height of a heating chamber. <P>SOLUTION: A turn table driving mechanism 40 utilizing a thin decelerating mechanism and an oscillating mechanism, is disposed in a void part 19 between a bottom wall 17 of a drawer body 4 and a bottom wall section 12 of the heating chamber 3, and a power transmitting structure is detachable in conjunction with coming-in-and-out of the drawer body 4 in accompany with an opening/closing door 5, thus the drawer-type microwave oven capable of performing uniform heating by oscillating rotation while keeping the ceiling height of the heating chamber can be provided. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a drawer-type heating cooker provided with a rotary table mechanism for uniformly heating a heated object.

  A cooking device has been proposed in which a drawer unit integrated with an open / close door can be pulled out to the front side of the cooking device, but this type of drawer-type cooking device has a built-in installation under the counter top of the kitchen. Since the cooking device can be installed without occupying the countertop, it is suitable for a kitchen configuration in which a plurality of cooking devices are arranged in three dimensions, so it is positioned as one of the cooking devices that make up the system kitchen. Then, in recent years, the spread has expanded.

  As an example of a drawer-type microwave oven that is a drawer-type heating cooker, the present applicant moves within the cooker body so that the cooker body having a heating chamber and the cooking chamber body can be pulled out from the heating chamber A component having high heat resistance and flame retardancy by providing a drawer body that can be arranged and a slide rail for moving the drawer body inside the cooker body, and by providing the slide rail outside the heating chamber There has been proposed a drawer-type heating chamber cooker that does not require a slide mechanism made of materials and can prevent the occurrence of discharge failure due to microwaves (see Patent Document 1).

  Since the conventional drawer-type microwave oven described in Patent Document 1 has a drive mechanism for linearly moving the drawer on the side and bottom, it is difficult to feed microwaves from the side or bottom. The top surface feed structure supplies microwaves from the ceiling to the heating chamber.

  On the other hand, as a uniform heating mechanism for uniformly heating food such as food in a general microwave oven installed on the counter top of the kitchen, a rotary turntable is provided on the bottom of the heating chamber, and the heated object is mounted. A turntable type microwave oven that rotates the turntable during cooking and a rotating body with a non-uniform shape such as a metal plate provided in the microwave path and rotating the rotating body during cooking A rotating stirrer or rotating antenna type microwave oven that stirs the distribution of microwaves has been proposed and mass-produced.

  In a drawer-type microwave oven, if it is going to adopt a turntable method as a uniform heating mechanism, a rotary turntable will be arranged in the drawer, but a drive mechanism is provided in the linearly-movable drawer, Therefore, it is difficult to supply power, and it is difficult to dispose the turntable and its driving mechanism in a narrow space in the vertical direction. Therefore, as a uniform heating mechanism, a rotating antenna is incorporated in a waveguide provided on the top surface of the heating chamber, which is a fixed part. Since such a uniform heating mechanism is employed, it is necessary to employ a top surface feeding structure that supplies microwaves from the ceiling surface into the heating chamber.

On the other hand, there is a strong demand for a drawer-type microwave oven incorporating a turntable that can visually confirm the cooking operation of the microwave oven by a traditional consumer who likes a turntable. Further, according to a questionnaire survey conducted by the applicant for users of drawer type microwave ovens in the United States, it has been found that there are many consumers who want a turntable in the microwave oven.
On the other hand, according to another questionnaire item answer, it is clear that the heating room ceiling height of the drawer type microwave oven is strongly demanded to be 180 mm or more in order to accommodate the mug of the leading coffee shop chain without difficulty Therefore, it is necessary to consider that the heating chamber ceiling height is 180 mm or more as a design priority.

  As described above, mounting a turntable in a drawer-type microwave oven has been a high-priority technical problem from the beginning of the development of the drawer-type microwave oven, but has remained unsolvable for a long time.

As a structure for providing a turntable in a drawer type microwave oven, first of all, a structure in which a turntable is provided on the bottom surface of the drawer body like a conventional microwave oven and a rotary motor is mounted as a drive mechanism below the bottom surface of the drawer body is conceived. Is done. In such a structure, since the rotary motor moves together with the movement of the drawer body, separation / engagement is not particularly required.
However, the lower part of the bottom surface of the drawer is in the microwave heating chamber and is a space where microwaves are output, so that a rotary motor cannot be installed. For this reason, it was impossible to install the turntable with the same structure as the conventional one in the drawer type microwave oven.
In addition, since the power line to the rotary motor moves and bends every time the drawer body is taken in and out of the heating chamber, it is extremely difficult to ensure the durability of the power line.

  In order to solve such a problem, when the drawer body appears and disappears, the drive unit that requires electric power supply such as a rotary motor is left in the main body, and both are placed in order to feed the turntable on which the food is placed together with the drawer body. It is necessary to provide a turntable having an attachment / detachment mechanism that is separated and engaged by the movement of the drawer.

It is conceived that a magnetic coupling capable of transmitting power in a non-contact manner is adopted as the attachment / detachment mechanism.
In a general microwave oven, the applicant uses a magnetic coupling between the first magnet in the turntable and the second magnet in the drive mechanism, and uses the driving force of the rotary motor provided outside the box. The heating cooker which has the uniform heating mechanism which rotates a turntable is shown (refer patent document 3). When the rotation mechanism presented here is incorporated into a drawer-type heating cooker, problems remain in operation as a drawer-type heating cooker even if the cost of the magnet is not taken into consideration.
That is, since the magnetic coupling is magnetically linked in the vertical direction, which is the rotation axis direction, when the drawer body is opened, the drive mechanism portion and the rotation operation portion are in a state of strongly attracting each other in the vertical direction. Since the drawer body is moved in the direction, a large load is applied to the moving mechanism that drives in the direction orthogonal to the rotating shaft. Therefore, there is a problem that the driving force needs to be strengthened and the smooth drawing operation is not performed. For this reason, the adoption to the drawer type microwave oven was difficult from the surface of cost and reliability.

As another attachment / detachment mechanism, an attachment / detachment mechanism for moving the turntable in the vertical direction is also included in the options.
Such an attachment / detachment mechanism needs to prevent collision when the turntable is raised when the cradle moves forward. As a result, the height of food or the like is restricted, and the ceiling height of the heating chamber is substantially reduced. For this reason, it is difficult to adopt an attachment / detachment mechanism that moves the turntable in the vertical direction.

In addition, in the patent document 2, the applicant has a turntable in which the turntable has a circular shape, has a rotating body in the vicinity of the bottom surface periphery, penetrates the cradle in the center of the bottom surface, and has a driven gear fixed to the lower end. The shaft is fixed and is rotatably mounted on the cradle. The driven gear meshes with the driving gear fixed to the tip of the rotating shaft of the turntable driving motor with the door closed. When the door is opened and the cradle moves forward, the cooking device has a structure that is detached from the drive gear.
In this heating cooker, the drive gear and the driven gear are bevel gears that expand in the opposite direction, and the door is closed and closed, so that the operation is a requirement. In order to accurately encounter and accurately mesh the repeated operation, it is required to have high component accuracy and assembly accuracy unprecedented in conventional cooking devices, and each component by repeated opening and closing of the door It is necessary to significantly reduce the wear and deformation of the sheet and maintain the fixed size and constant fit, and such an attachment / detachment mechanism is difficult to adopt.

Even if any one of the above-mentioned mechanisms is adopted, it is essential that the conventional drawer-type microwave oven has a moving mechanism mounted on the outer surface of the bottom of the heating chamber in order to support the weight of the drawer and the drawer on which the food is placed. Therefore, the drive mechanism of the rotary table cannot be extended below the heating chamber, and microwaves are distributed in the gap between the drawer and the heating chamber, so that it is difficult to place a motor that is a metal part. It was difficult to install the drive mechanism.
Thus, since it was a subject for a person skilled in the art to employ a turntable provided with an attaching / detaching mechanism in a heating cooker, a great deal of consideration has been made on many design options.
JP 2005-221081 A Utility Model Registration No. 2520881 JP 2004-71213 A

Therefore, in a drawer-type heating cooker in which the drawer body can be taken in and out of the heating chamber, the drawer body is equipped with a uniform heating mechanism using a rotary table, and a motor and a rotary table provided outside the heating chamber by taking the drawer body into and out of the heating chamber There is a problem to be solved in that smooth transmission and interruption of power between the two is performed.
An object of the present invention is to rotate a rotary table on a drawer to uniformly heat an object to be cooked, thereby eliminating heating unevenness due to the position and posture in the heating chamber, and a conventional rotating antenna and electronic It is an object of the present invention to provide a drawer-type heating cooker that eliminates the need for confirmation means such as a rotational state detection means for an optical or optical rotating antenna and avoids the increase in bulk.

  The drawer-type heating cooker according to the present invention includes a drawer body that can be pulled out or stored from the main body of the heating cooker in which a heating chamber is formed, and the open / close door provided in the drawer body is stored in the drawer body. In the drawer-type heating cooker that closes the front opening of the heating chamber, a rotary table that is rotatably supported on the bottom wall of the drawer body, the bottom wall portion of the heating cooker body on the outside of the heating chamber Arranged between the bottom wall portion of the heating cooker body and the bottom wall of the drawer body, and is engaged by pushing the drawer body into the heating cooker body. A power transmission mechanism that is disengaged by pulling out the main body of the heating cooker, and capable of transmitting the rotation of the motor to the rotary table in the engaged state; Bottom wall A first transmission portion attached to the output shaft of the motor that protrudes through the heating chamber and penetrates the bottom wall of the drawer and is attached to the rotation shaft of the rotary table that protrudes into the heating chamber. The second transmission unit and the heating cooker main body are swingably disposed to form a radially outer first engagement unit that engages with the output transmission unit, and the pull-out direction of the drawer body And a swingable sector-type transmission portion that is engaged with the second transmission portion in the retracted state of the drawer body to form a second engagement portion on the radially inner side. .

  In the drawer-type heating cooker according to the present invention, the drawer body can be pulled out and stored from the main body of the heating cooker, and the rotary table is rotated on the drawer body to uniformly heat the object to be cooked. The heating unevenness due to the position and posture of the can be eliminated. Also, the conventional rotating antenna becomes unnecessary, and therefore, electronic or optical rotation detecting means for visually detecting the rotating state of the rotating antenna to detect the stop of the rotating antenna and preventing the occurrence of non-uniform heating. Such confirmation means is not required. Moreover, it can also avoid that a heating cooker becomes bulky because a rotation antenna becomes unnecessary.

  Embodiments of a rotary table mechanism in a drawer-type heating cooker according to the present invention will be described below with reference to the drawings. 1 is a side sectional view of a drawer-type heating cooker provided with a rotary table mechanism, FIG. 2 is a side sectional view showing a state in which a drawer body of the drawer-type heating cooker shown in FIG. 1 is pulled out, and FIG. Fig. 4 is a side sectional view showing a state in which the drawer body of the drawer-type heating cooker shown in Fig. 4 is housed, and Fig. 4 is a bottom view of the drawer-type heating cooker.

  The drawer-type heating cooker 1 is heated from a heating cooker body 2 in which a heating chamber 3 to which microwaves are irradiated is provided and a state housed in the heating chamber 3 (the state shown in FIG. 3). A drawer body 4 that can be pulled out toward the outside of the cooker body 2 is provided. The drawer body 4 includes an opening / closing door 5 at a front end portion thereof, and the opening 6 of the heating chamber 3 can be closed in a state where the drawer body 4 is housed in the heating cooker body 2. The heating cooker body 2 is provided with a magnetron 7 for generating microwaves on the rear wall portion 10 thereof, and a waveguide 8 for guiding the microwaves generated by the magnetron 7 to the heating chamber 3 is provided on the ceiling portion 11. ing. The rear wall portion 10 of the heating cooker body 2 includes a power supply device and a blower that sends air into the heating chamber 3. A rotary table driving mechanism 40 according to the present invention is disposed on the bottom wall portion 12 of the heating cooker body 2.

  The drawer body 4 includes side walls 15, 15 on both sides, a rear wall 16, and a bottom wall 17, and the front end portions of the side walls 15, 15 and the bottom wall 17 are attached to the open / close door 5. The upper part of the drawer body 4 is open, and in the state where the drawer body 4 is pulled out from the microwave main body 2, an object to be cooked, for example, the tray T and the food F to be heated stacked on the drawer body 4 are drawn. Can be put in and out. Between the upper surface of the bottom wall portion 12 of the heating cooker body 2 and the bottom wall 17 of the drawer body 4, a gap portion 19 for forming a rotary table drive mechanism 40 of the present invention described later is formed. .

  A slide mechanism (not shown) is disposed between the heating cooker body 2 and the drawer body 4 so that the drawer body 4 can be pulled out with respect to the heating cooker body 2. The slide mechanism is disposed outside the heating chamber 3 so as not to be affected by microwaves of the cooking device, food residue, etc., for example, a movable rail attached to both sides of the open / close door 5 and And a fixed rail that is attached to the heating cooker body 2 side and that can slide on the movable rail. Further, the drawer mechanism 4 can be opened and closed automatically by associating the slide mechanism with a drive mechanism such as a motor and a transmission mechanism for transmitting the output.

  A rotary table 20 that can freely rotate around a rotary shaft 21 is mounted on the upper center portion of the bottom wall 17 of the drawer body 4. On the turntable 20, a cooking object (the tray T and the food F to be heated) is placed. A rotary shaft 21 fixed to the rotary table 20 at the upper end portion 22 is provided below the rotary table 20. The rotary shaft 21 passes through the bottom wall 17 of the drawer body 4 and is below the drawer body 4. It extends to. Below the bottom wall 17, a drive gear 24 as a rotary table transmission portion is attached to the lower end portion 23 of the rotary shaft 21 in order to rotationally drive the rotary table 20 (details will be described later). In addition, a disk 25 is fixed to the rotary shaft 21 at an intermediate portion, and support shafts 26, 26, 26 extending at equal angular intervals (three directions every 120 degrees in this example) are attached to the disk 25. . Each shaft 26 is rotatably provided with a roller 27. The roller 27 is in contact with the rotary table 20 on the upper side and is in contact with the bottom wall 17 on the lower side, and the weight of the rotary table 20 and the cooking object is reduced. It is possible to roll on the bottom wall 17 while supporting the thickness.

  A motor 30 as an external drive source for driving the rotary table 20 is disposed at one corner in the bottom wall portion 12 of the heating cooker body 2. The output shaft 31 of the motor 30 extends through the bottom plate of the bottom wall portion 12 through the radio wave leakage structure and protrudes into the heating chamber 3. Therefore, the motor 30 is placed outside the heating chamber 3 and is not exposed to the microwaves irradiated into the heating chamber 3. An output gear 32 as a rotary motor transmission unit is attached to the upper end portion of the output shaft 31. Further, a sector gear 33 having a substantially fan shape is supported on the upper surface of the bottom wall portion 12 by a pivot 34 so as to be swingable therearound. The rotary shaft 21 of the rotary table 20 occupies an intermediate position between the pivot shaft 34 of the sector gear 33 and the output shaft 31 of the motor 30 when the drawer body 4 is in the retracted state.

  The sector gear 33 has an arcuate external gear portion 35 that always meshes with the output gear 32 to form a first engaging portion on the outer periphery side of the fan shape, and a sector shape at a midpoint between the pivot 34 and the outer periphery. And an arcuate internal gear portion 36 that forms a second engaging portion that meshes with the drive gear 24 on the inner peripheral side of the fan-shaped shape concentric with the outer periphery of the inner peripheral portion. The internal gear portion 36 is provided so as to be slightly offset in the axial direction, that is, upward from the sector-shaped main body of the sector gear 33 in order to be detachable in the horizontal direction. Further, the pivot 34 is located at a position near the opening 56 of the heating chamber 3 and does not interfere with the drive gear 24 that passes when the drawer body 4 is taken in and out. The output gear 32, the sector gear 33, and the drive gear 24 constitute a power transmission mechanism for transmitting the output rotation from the motor 20 to the rotary table 20.

  The internal gear portion 36 for forming the second engaging portion has a pitch diameter having a sufficiently large radius of curvature as compared with the drive gear 24 of the rotating portion, and moves toward the moving direction of the drawer body 4. It is open. In a state where the drawer body 4 is housed in the heating cooker body 2, the drive gear 24 can be engaged with the internal teeth of the internal gear portion 36 with moderate accuracy by simply moving in the horizontal direction. When the body 4 is opened, it can be smoothly detached from the internal gear portion 36 by simply moving in the horizontal direction.

  In this way, the rotary table 20 is rotatably mounted on the bottom wall 17 of the drawer body 4, and the rotary shaft 21 of the rotary table 20 is protruded downward through the bottom wall 17 of the drawer body 4. A driving motor 30 is provided outside the bottom wall portion 12 of the heating chamber 3, and an output shaft 31 of the motor 30 is protruded upward through the bottom wall portion 12 of the heating chamber 3 through a radio wave leakage structure. The lower end portion 23 of the rotary shaft 21 of the rotary table 20 and the motor are formed in a gap portion 19 formed between the bottom wall 17 of the drawer body 4 of the drawer-type heating cooker 1 and the upper surface of the bottom wall portion 12 of the heating chamber 3. 20 output shafts 31 are disposed in a horizontal direction, and a drive gear 24 and an output gear 32 are disposed in an offset direction in the vertical direction.

  FIG. 5 is a perspective view showing a state in which the drawer body 4 is pulled out from the heating cooker body 2, and FIG. 6 is a perspective view showing a state in which the drawer body 4 is pushed into the heating cooker body 2. When the drawer body 4 is pushed into the heating cooker body 2, the drive gear 24 that appears outward from the bottom wall 17 of the drawer body 4 advances in the gap 19 on the bottom wall portion 12. In a state in which the drawer body 4 is completely pushed into the heating cooker body 2, the drive gear 24 meshes with the internal gear portion 36 of the sector gear 33.

  FIG. 7 and FIG. 8 show how the drive gear 24 is rotationally driven after meshing with the internal gear portion 36 of the sector gear 33. FIG. 7 shows a state where the sector gear 33 is swung most clockwise, and FIG. 8 shows a state where the sector gear 33 is swung most counterclockwise. When the motor 30 is driven and the output shaft 31 and the output gear 32 attached thereto rotate, the sector gear 33 swings around the swing shaft 34 and the drive gear 24 that meshes with the internal gear portion 36 moves. Driven by rotation. When the rotation direction of the motor 30 is automatically reversed according to the position of the sector gear 33, the sector gear 33 repeatedly reverses the swing rotation within the swing range. The swing range of the sector gear 33 corresponds to one rotation of the drive gear 24.

  According to the structure of this embodiment, the floor surface of the drawer body 4 rises by mounting the rotary table 20 on the drawer body 4, so that the ceiling height is relatively low, but the uniform heating with the rotary table 20 is achieved. Since the mechanism is provided, the rotating antenna mounted on the top surface is unnecessary, and the antenna rotating motor mounted on the upper portion of the waveguide 8 is not required. Thereby, since the fall of the ceiling height by the height of the turntable 20 is almost canceled, the food or tableware of the height comparable as the conventional drawer-type heating cooker can be used.

  When the drawer body 4 is pushed into the heating cooker body 2 to be accommodated and ready for cooking, the motor 30 is driven. By rotating the output of the motor 30 in reverse at every predetermined number of revolutions, the output gear 32 swings and rotates the sector gear 33 meshing with the output gear 32 within a predetermined swing angle. By rotating the rotating shaft 21 of the drive gear 24 in the reverse direction, the rotary table 20 is rotated in reverse at successive predetermined angles. Although the turntable 20 reciprocally swings at a constant rotation angle without continuously rotating, the mounted cooking object almost completely covers the non-uniformly distributed microwave distribution area when reciprocatingly swings. Since it passes, the variation of the microwaves is leveled, and uniform heating substantially equivalent to that of the rotating table that rotates continuously becomes possible.

  In this way, uniform heating is possible by swinging and rotating the rotary table, so that there is a gap between the output gear 32 of the motor 30 located at one corner of the drawer and the drive gear 24 located near the center of the drawer. Power transmission can be performed by the sector gear 33 instead of the circular gear, and the sector gear 33 swings around a swing shaft 34 provided at one corner with respect to the motor 30 of the drawer.

  Further, the engagement of the drive gear 24 and the sector gear 33 is performed by meshing the arc-shaped internal gear portion 36 and the drive gear 24, but the arc-shaped external gear portion 35 is substantially equal to the rotary table. Since the reduction gear ratio has such a radius that the rotation ratio of the rotary table rotates once by the swing of the sector gear 33 within the mechanically swingable angle range, the arc-shaped inner teeth with a small curvature are realized. The drive gear 24 having a small outer shape meshes with the gear portion 36. For this reason, even if the position of the drive gear 24 varies in the width direction of the cooking device, it has a feature that the engagement is easy in the attaching / detaching operation.

  If the motor 30 has its own output rotation that is a continuous rotation, but a motor that reversely operates within a certain rotation angle due to a mechanical configuration, a motor having the necessary drive characteristics can be obtained at a low price. it can.

  In order to reversely rotate the output shaft 31 of the motor 30 at a predetermined number of rotations, the motor 30 can be a servo motor provided with a rotary encoder on the output shaft 31. The servo motor can be controlled at a high level and can acquire time-series data of the rotation angle. In the configuration using the servo motor, it is possible to calculate the rotational moment of the rotary table 20 loaded with food by processing the rotation angle data when driving with a constant rotational torque without performing feedback control. . Since this rotational moment has a strong correlation with the mass of food, the mass of food can be estimated and used for setting the cooking time during automatic cooking. Such automatic cooking is preferable because in addition to the detection of the finished product such as a humidity sensor, it is possible to prevent underheating or overheating when an extremely large or small amount of food is cooked.

  Since the rotation angle of the rotary table is uncertain when the drawer body is accommodated, if the engaging portion uses gears, there is a possibility that the meshing between the two becomes inconsistent. By finely moving the power transmission mechanism with the directional moving force applied, it is possible to match the meshing of the two. Therefore, when the drawer body is accommodated, it is always necessary to control the power transmission mechanism to be finely moved.

  In the power transmission mechanism, the first and second engaging portions of the output gear 32, the sector gear 33, and the drive gear 24 are replaced with gears, and plastic inner teeth are provided on the inner peripheral surface of the arc-shaped elastic body. It can be set as the structure which affixed the belt. Such a toothed belt configuration is more preferable because the engagement between the two is less likely to become inconsistent.

  In the power transmission mechanism described above, the first and second engaging portions do not mesh with the gears of the output gear 32, the sector gear 33, and the drive gear 24, and the friction wheels having a circumferential surface or an arc surface having a high friction coefficient. This friction engagement is more preferable because problems such as misalignment of gear meshing do not occur.

  In addition, since the power transmission mechanism of this invention is installed in the space | gap part 19 of the drawer body 4 and the heating chamber 3 except for the motor installed outside the heating chamber 3, the heating cooker 1 Installed in the heating chamber 3. Therefore, the power transmission mechanism is subjected to electromagnetic induction by microwaves during cooking. However, if heat-resistant plastic, ceramic, heat-resistant glass, etc. with low dielectric loss are appropriately selected and used, problems such as discharge and overheating will occur. It can be made into a structure that does not.

  By adopting the uniform heating mechanism according to the present invention, a rotating antenna that has conventionally been installed inside the waveguide disposed on the ceiling portion is unnecessary. Conventionally, since the rotation state of the rotating antenna cannot be visually confirmed, the rotation state of the rotating antenna has been confirmed by an electronic or optical rotation detection unit. However, such a confirmation unit is unnecessary, which is preferable. . Further, since the rotating antenna is not required, an antenna rotating motor that has been conventionally installed on the upper surface of the ceiling waveguide is not required. For this reason, it becomes possible to raise the heating chamber top surface by about 20 millimeters.

  The configuration of the present invention has a large pitch circle radius of the sector gear, so that the curvature of the pitch circle is small, and the drawer gear is a drawer with respect to the horizontal movement direction of the drawer body. The positional relationship between the body and the heating chamber is tolerant to the deviation in the width direction, and the engagement / release of the gear of the rotary table and the fan-shaped gear is easy.

  With such a configuration, when the user holds the door handle and performs the closing operation, a lateral operation force is applied to the drawer body, and even when the drawer body moves in an oblique direction, the fan-shaped gear of the rotary table gear Even if the position of the engagement with respect to the recess is shifted, it is preferable because the engagement can be performed without any problem.

It is side surface sectional drawing of the drawer type cooking-by-heating machine provided with the rotary table mechanism. It is side surface sectional drawing which shows the state which pulled out the drawer body of the drawer type heating cooking appliance shown in FIG. It is side surface sectional drawing which shows the state which accommodated the drawer body of the drawer-type heating cooker shown in FIG. It is a bottom view of the drawer-type heating cooker shown in FIG. It is a perspective view which shows the state which pulled out the drawer | drawing-out body of the drawer-type heating cooker shown in FIG. 1 from the heating cooker main body. It is a perspective view which shows the state which pushed the drawer body of the drawer | type drawer-type heating cooker shown in FIG. 5 into the heating cooker main body. FIG. 5 is a bottom view showing a state in which the drive gear of the drawer-type heating cooker shown in FIG. 4 is rotationally driven after meshing with the arc-shaped internal gear portion of the sector gear. It is a bottom view which shows another rotation state of the drawer type cooking-by-heating machine shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Drawer type | mold heating cooker 2 Heating cooker main body 3 Heating chamber 4 Drawer 5 Opening / closing door 6 Opening part 7 Magnetron 8 Waveguide 10 Rear wall part 11 Ceiling part 12 Bottom wall part 15 Side wall 16 of the drawer body 4 Rear wall 17 Bottom wall 19 Gap portion 20 Rotary table 21 Rotating shaft 22 Upper end portion 23 Lower end portion 24 Drive gear 25 Disk 26 Support shaft 27 Roller 30 Motor 31 Output shaft 32 Output gear 33 Sector gear 34 Oscillating shaft 35 Arc-shaped external gear portion 36 Arc-shaped internal gear section 40 Rotary table drive mechanism

Claims (6)

A drawer body that can be pulled out or stored from the main body of the heating cooker in which a heating chamber is formed is provided, and an opening / closing door provided in the drawer body closes the front opening of the heating chamber in the storage state of the drawer body In the drawer-type heating cooker
A rotary table rotatably supported on the bottom wall of the drawer body;
A motor disposed outside the heating chamber on a bottom wall portion of the heating cooker body, and disposed between the bottom wall portion of the heating cooker body and the bottom wall of the drawer body, and the drawer A power transmission mechanism that engages by pushing the body into the heating cooker body, engages and disengages by pulling out the body from the heating cooker body, and transmits the rotation of the motor to the rotary table in the engaged state; And
The power transmission mechanism is
A first transmission unit attached to an output shaft of the motor that projects through the bottom wall of the heating cooker body and protrudes into the heating chamber;
A second transmission portion attached to a rotary shaft of the rotary table that penetrates the bottom wall of the drawer and protrudes into the heating chamber; and a swingable arrangement in the heating cooker body, and the output A radially outer first engaging portion that engages with the transmitting portion is formed, and is opened in the pulling-out direction of the drawer body, and is engaged with the second transmitting portion in the retracted state of the drawer body to be radially inward A drawer-type cooking device comprising a swingable sector-type transmission portion that constitutes the second engagement portion.   The first transmission unit is an output gear attached to the output shaft of the motor, the second transmission unit is a drive gear attached to the rotation shaft of the rotary table, and the sector type transmission unit is An arcuate external gear portion that is supported by a swing shaft provided in the heating cooker main body so as to swing and rotate, and that can mesh with and engage with the output gear, and a circle that can mesh with and engage with the drive gear. The drawer-type heating cooker according to claim 1, wherein the sector-type gear has an arcuate internal gear portion.   The motor is disposed at one back corner of the bottom wall portion of the heating cooker body, and the swing shaft of the sector gear is the rotation table of the rotary table when the drawer body is in the stored state. 3. The drawer type according to claim 2, wherein a rotary shaft is sandwiched between the output shaft of the motor and disposed at a position that does not interfere with the drive gear that passes when the drawer body is inserted and removed. Cooking cooker.   The external gear portion has a radius substantially equal to that of the rotary table, and the internal gear portion and the drive gear are oscillated within a mechanically swingable angle range of the sector gear. The drawer-type heating cooker according to claim 2 or 3, wherein the rotary table is meshed at a reduction ratio for rotating the rotary table once.   The said 1st transmission part, the said 2nd transmission part, and the said sector type | mold transmission part are the structures which affixed the plastic toothed belt on the surface of the circular-arc-shaped elastic body. Drawer heating cooker.   The first transmission unit, the second transmission unit, and the sector-type transmission unit have a configuration of friction wheels that have a circumferential surface or an arc surface with a high friction coefficient and frictionally engage with each other. Item 9. A drawer-type heating cooker according to item 1.

Images