JP4440235B2 - Drawer type cooking device - Google Patents

Description

  The present invention relates to a drawer type cooking device that heats a cooking object through a door opened by being pulled out and puts it into a heating chamber and takes out the cooking object after heating cooking from the heating chamber. The present invention relates to a drawer-type heating cooker whose door automatically opens and closes.

  Conventionally, many types of heating cookers, such as microwave ovens, have been proposed with a door on the front, but as a type of cooker that is different from those types, a drawer-type heating cooker on the front side is also proposed. Has been. Since the drawer-type cooking device is suitable for a relatively large structure, it is positioned as one of the cooking devices constituting the system kitchen. In recent years, reflecting the increase in size and systemization of kitchens, cooking appliances have also been diversified and unitized, and cooking appliances that integrate cooktops, drawer-type microwave ovens, and electric ovens have been proposed. .

  As an example of a drawer-type heating cooker, the bottom plate interlocked with the front opening / closing door can be smoothly slid with respect to the equipment body by a sliding mechanism, and the output of the motor provided on the equipment body side can be changed to a pinion rack mechanism, etc. A structure has been proposed in which a bottom plate is opened and closed together with an opening and closing door by a transmission means (see Patent Document 1). The door opening / closing device includes a latch device that closes and holds the opening / closing door, a door opening / closing switch, and a control circuit that drives the motor to open / close the door in response to a signal from the door opening / closing switch. When the door open / close switch is pressed, the latch is automatically released and the open / close door and the bottom plate are interlocked and opened / closed by the driving force of the motor.

  The present applicant has proposed a cooking device in which a drawer body in which an object to be heated is accommodated can be pulled out from the cooking device body (Japanese Patent Application Nos. 2004-7384 and 2004-7385). According to the proposal by the former application, it is not necessary to use expensive parts or materials having high heat resistance and flame retardancy to constitute the moving mechanism, and the manufacturing cost can be reduced. By adopting a structure that is not affected by the microwaves irradiated into the heating chamber, the possibility of discharge due to microwaves can be eliminated. In the latter application, the user is burned due to a bumping phenomenon in which water vapor is released from the overheated liquid at a stretch by shocks such as vibration by giving vibration to the object to be heated due to opening and closing operations. In addition to preventing danger, it is possible to prevent the heated object from overturning and spilling liquid components due to the impact during the opening and closing operation by controlling the moving speed of the opening and closing door. Furthermore, the movement mechanism is configured without using expensive parts or materials having high heat resistance and flame retardancy, and the manufacturing cost is reduced, and the influence of the microwave irradiated to the heating mechanism in the heating chamber is reduced. By adopting a structure that does not receive electric waves, the possibility of microwave discharge is eliminated.

In a drawer-type heating cooker that automatically opens and closes the door, when the door is manually opened and closed, a large torque acts on the gear portion of the automatic opening and closing mechanism, which may cause breakage and failure. Also, if the door is manually opened and closed, a counter electromotive force is generated in the motor, which may lead to motor failure. Furthermore, manually opening and closing the door requires a large operating force, requires a considerable force, and is inconvenient in that operability and convenience are poor.
JP-A-3-45820 (3rd page, upper left column, line 5 to same page, upper right column, line 16; FIGS. 2 to 4)

  Therefore, there is a problem to be solved in that the cooking device in which the door is automatically opened and closed can be disconnected from the motor when the door is manually opened and closed.

  An object of the present invention is a drawer-type cooking device whose door automatically opens and closes, and even if the door is manually opened and closed, the motor and gear part for automatic opening and closing do not break down, and the drawer has good operability. Is to provide a mold cooker.

  In order to solve the above-described problems, a drawer-type heating cooker according to the present invention includes a drawer body on which food can be placed and formed integrally with an open / close door, and supports the drawer body and the cooker body. A slide mechanism that allows the drawer body to be taken in and out, a rack gear provided in the slide mechanism for automatically opening and closing the open / close door, and a motor that drives a pinion gear that meshes with the rack gear, the motor and the rack gear It has a connection / disconnection mechanism that can switch connection / disconnection of the power transmission with the user's selection.

  According to this drawer-type heating cooker, in order to automatically open and close the door together with the drawer body, the connecting / disconnecting mechanism is connected by the user's selection, and the driving force of the motor can be transmitted to the rack gear via the pinion gear. By moving the rack gear together with the slide mechanism and the drawer by the driving force of the motor, the door can be automatically opened and closed. Further, in order to manually open and close the door together with the drawer, the connection state of the connecting / disconnecting mechanism is cut off by the user's selection so that the movement of manually opening and closing the door is not transmitted to the motor side. Therefore, when the door is manually opened and closed, an excessive torque load does not act on the meshing between the pinion gear and the rack gear, and no back electromotive force is generated in the motor.

  In this drawer-type heating cooker, the connection / disconnection mechanism can be an electromagnetic clutch disposed between the motor and the pinion gear. In order to automatically open and close the door, the electromagnetic clutch is turned on and connected according to the user's selection, and the driving force of the motor can be transmitted to the rack gear via the pinion gear. Therefore, the door can be automatically opened and closed together with the drawer body by the driving force of the motor. Also, to open and close the door manually, the electromagnetic clutch is turned off according to the user's selection, so the pinion gear and the rack gear remain engaged, but the door manually opens and closes more than the electromagnetic clutch. Is not transmitted to the motor side. Therefore, an excessive torque load does not act on the gear meshing portion of the rack gear and the pinion gear, and no back electromotive force is generated in the motor.

  In this drawer-type heating cooker, the connection / disconnection mechanism can be a lever mechanism capable of changing the position of the motor and the pinion gear with respect to the rack gear. In order to automatically open and close the door, the lever mechanism is operated by the user's selection to maintain the engagement between the pinion gear and the rack gear, and the driving force of the motor can be transmitted to the rack gear via the pinion gear. Therefore, the door can be automatically opened and closed together with the drawer body by the driving force of the motor. Further, in order to manually open and close the door, the lever mechanism is operated by the user's selection to disengage the pinion gear and the rack gear, so that the door opening and closing movement is not transmitted from the pinion gear to the previous motor side. Therefore, no torque load acts on the gear portion, and no back electromotive force is generated in the motor.

  In this drawer-type heating cooker, the connection / disconnection mechanism can be operated by a switch provided on an operation unit provided in the cooker body. Since the connection / disconnection of the connection / disconnection mechanism can be operated by operating a switch provided on the operation unit provided in the cooker body, the operability and convenience of the drawer-type heating cooker is improved.

  The drawer-type heating cooker according to the present invention includes a rack gear in the slide mechanism that supports the open / close door as described above, a pinion gear that meshes with the rack gear, and a motor for driving the rack gear. The door can be opened and closed automatically or manually by selecting the connection state or disconnecting the door, and even if the door is opened and closed manually, it does not cause damage to the motor or gear, and has excellent operability. Can be provided.

  Hereinafter, an embodiment of a drawer-type heating cooker according to the present invention will be described based on the attached drawings. FIG. 1 is a perspective view showing the overall appearance of an embodiment of a drawer-type cooking device according to the present invention.

  As shown in FIG. 1, the drawer-type heating cooker (hereinafter simply referred to as “heating cooker”) includes a cooker body 1 and a drawer body 2 that can be pulled out from the cooker body 1. Inside the cooker body 1 is formed a heating chamber into which the drawer body 2 for placing an object to be cooked can enter. The inside of the heating chamber is surrounded by the left, right, top, bottom, and back walls, but the front surface is formed in an opening for taking in and out the drawer body 2.

  The drawer body 2 is movably arranged in the cooker body 1 by a slide mechanism 4 to be described later so that the drawer body 2 can be pulled out from the heating chamber of the cooker body 1 to the outside in the direction indicated by the arrow or vice versa. Has been. The drawer body 2 includes an opening / closing door (hereinafter abbreviated as “door”) 2a for opening and closing the heating chamber, and a heating container 3 to which the door 2a is attached and for storing an object to be heated. ing. The heating container 3 includes a front plate attached to the door 2a, left and right side plates extending rearward from the left and right of the front plate, a rear plate connected to the side plate on the back (back) side, and a bottom plate connected to the side plate and the rear plate. The container opening part which can take in and out to-be-heated material in the upper part is formed. Although not shown in the figure, the microwave generator which is comprised from the magnetron which generate | occur | produces a microwave, and the waveguide which propagates the microwave which generate | occur | produced with the magnetron is arrange | positioned around the heating chamber. Has been. Microwaves generated by the magnetron propagate through the waveguide and are supplied from the power supply opening into the heating chamber.

  The heating cooker includes slide mechanisms 4, 4, 4 arranged on the left and right outer sides and the bottom side of the heating container 3 in order to move the drawer body 2 within the cooker body 1. Although not shown in detail for each slide mechanism 4, each slide mechanism 4 is a telescopic mechanism composed of a slide rail that allows the movable rail to slide relative to the fixed rail. The drawer body 2 is movable between a fully opened position where the heating container 3 is completely pulled out from the heating chamber and a fully closed position where the heating container 3 is completely stored in the heating chamber. When the drawer body 2 occupies the fully closed position, since the door 2a closes the opening of the heating chamber, the internal space of the heating chamber is sealed by the inner wall surface of the cooker body 1 and the drawer body 2. Each slide mechanism 4 is provided in a passage box formed in the cooker body 1 on each of the left and right sides and the bottom side of the heating chamber, the fixed rail is attached to the outside of the heating chamber in the passage box, and the movable rail is It is possible to appear in the passage box together with the drawer body 2. The drawer body 2 is supported by the cooker body 1 via each slide mechanism 4 and can be stably pulled out from the heating chamber. In order to drive the drawer 2 in the opening / closing direction, a rack 5 is fixed to the movable rail along the longitudinal direction of the slide mechanism 4 on the bottom side, and details thereof will be described later.

  Regarding the left and right outer slide mechanisms 4, 4, at least one slide mechanism 4 is provided with a mechanism for operating a fully closed detection switch when the drawer body 2 is moved to the fully closed position. In addition, a front position detection switch (intermediate switch) is attached to the cooker main body 1 in the middle of the passage box (a position slightly close to the fully closed detection switch). Furthermore, when the drawer body 2 is pushed from the open state to the storage position, the operating lever provided at the innermost position of the movable rail turns on the fully-closed detection switch. As described above, the detection switches are arranged in accordance with the fully open, intermediate, and fully closed positions of the drawer body 2, and the position of the drawer body 2 is known by the operation of each detection switch, and the opening / closing control of the drawer body 2 is performed. Has been used.

  When the drawer body 2 is pulled out, the operating lever is detached from the fully closed detection switch, and the fully closed detection switch is turned off. Therefore, even after cooking, even during cooking, when the drawer body 2 is opened, the power supply to the microwave generator is turned off, and generation of microwaves is disabled. The fully-closed detection switch can be used as a part of a switch that controls the oscillation and stop of the microwave. The user can set how the cooking device is actually heated by operating other operation switches (not shown). A main switch for starting cooking is separately provided for the user to operate with the intention. As an example, the door 2a can be provided with an operation switch 12 for operating the connection / disconnection mechanism described later on the front surface thereof.

  FIG. 2 is an enlarged perspective view showing a drive mechanism arranged in a portion indicated by A of the heating cooker shown in FIG. 1, and FIG. 3 is a front sectional view of the drive mechanism shown in FIG. As shown in FIGS. 2 and 3, the rack gear 5 is fixed along the longitudinal direction of the movable rail on one side of the movable rail fixed to the bottom of the drawer 2 of the slide mechanism 4 via the bracket 11. Yes. On the other hand, a motor 7 for driving the drawer body 2 is attached to the bottom of the cooker body 1 via an angle member 9. A pinion gear 6 is attached to an end portion of the shaft 8 from which the output rotation of the motor 7 is taken out via an electromagnetic clutch 10 as a connection / disconnection mechanism. The pinion gear 6 is meshed with the rack gear 5. The electromagnetic clutch 10 can be switched on and off by a user operating an operation switch 12 (see FIG. 1) provided on the operation unit of the door 2a.

  When the electromagnetic clutch 10 is turned on by a user operation, the rotation of the shaft 8 when the motor 7 is operated is transmitted to the pinion gear 6 via the electromagnetic clutch 10. The rack gear 5 travels in the longitudinal direction by the rotation of the pinion gear 6. Depending on the rotation direction of the pinion gear 6, the traveling of the rack gear 5 becomes the opening and closing operation of the drawer body 2 as it is, and the door 2 a can be automatically opened and closed.

  When the user manually opens and closes the door 2a, the electromagnetic clutch 10 is turned off by the user's operation. When the electromagnetic clutch 10 is turned off, the pinion gear 6 can rotate in a relatively free state with respect to the shaft 8. Therefore, when the door 2a is manually opened and closed, even if the drawer body 2 moves together with the slide mechanism 4 and the pinion gear 6 that meshes with the rack gear 5 rotates, the rotation of the pinion gear 6 is applied to the shaft 8. Not transmitted. At this time, even if the rack gear 5 and the pinion gear 6 are engaged with each other, a large torque does not act on both gears, and there is no possibility of breakage or failure. Further, even if the door 2a is manually opened and closed, the shaft 8 is not rotated, so that no back electromotive force is generated in the motor 7, and there is no possibility that the motor 7 breaks down. Thus, since the electromagnetic clutch 10 is provided between the pinion gear 6 and the motor 7, the user can switch the connection / disconnection of the electromagnetic clutch 10 by a switch provided on the operation unit. When opening and closing the door, it is possible to freely select automatic opening or manual opening.

  FIG. 4 is a diagram showing another form of the connection / disconnection mechanism shown in FIG. 3. In the embodiment shown in FIG. 4, the same reference numerals are given to the same functions as those of the elements and parts used in the embodiment shown in FIG. In the embodiment shown in FIG. 4, the drive mechanism including the motor 7, the shaft 8 and the pinion gear 6 is integrated with a lever (described later with reference to FIGS. Can be moved vertically. In FIG. 4, a state in which the pinion gear 6 meshes with the rack gear 5 is illustrated by a solid line. In this state, the door is automatically opened and closed by the operation of the motor 7.

  Further, in FIG. 4, a state where the drive mechanism is raised by a lever operation by the user is indicated by a broken line. In this state, the engagement between the pinion gear 6 and the rack gear 5 is mechanically disconnected. Even if the user selects manual opening / closing of the door 2a and manually moves the drawer body 2, the pinion gear 6 not engaged with the rack gear 5 does not rotate. Therefore, the meshing of the gear is not damaged, and the shaft 8 is not rotated, so that no back electromotive force is generated in the motor 7 and there is no possibility that the motor 7 breaks down.

  5 and 6 are side views of the connection / disconnection mechanism shown in FIG. FIG. 5 shows the engagement state of the connection / disconnection mechanism, and FIG. 6 shows the engagement release state. This connecting / disconnecting mechanism includes a lever mechanism that connects / disconnects the pinion gear 6 to / from the rack gear 5 by a user operation. The lever mechanism includes a lever 13 that supports the pinion gear 6 via a motor 7 and a shaft 8 thereof, and the lever 13 is rotatably connected to the angle member 9 as a fulcrum 13a. Moreover, the operation end of the lever 13 protrudes outside the cooker body so that the user can operate it. In the state shown in FIG. 5, the pinion gear 6 is engaged with the rack gear 5, and when the lever 13 is pushed down by the user's operation from this state, the lever 13 rotates around the fulcrum 13 a and the pinion gear 6 is lifted from the rack gear 5. As shown in FIG. 6, the pinion gear 6 is disengaged from the meshing with the rack gear 5. Therefore, the manual opening and closing of the door 2 and the driving of the motor 7 are mechanically separated. In the example shown in FIG. 4, it is possible to operate the lever 13 by operating the operation button 12 (see FIG. 1) provided on the front surface to excite a solenoid, which is an actuator not shown.

The perspective view of the drawer type cooking-by-heating machine by this invention. The enlarged detail view of the A section of FIG. FIG. 3 is a front sectional view of FIG. 2. Sectional drawing which shows another embodiment of the drawer-type heating cooker by this invention. The side view which shows the meshing state of the connection / disconnection mechanism shown in FIG. The figure which shows the meshing separation state of the connection / disconnection mechanism shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cooker body 2 Opening / closing door 3 Heating container 4 Slide mechanism 5 Rack gear 6 Pinion gear 7 Motor 8 Motor shaft 9 Angle material 10 Electromagnetic clutch 11 Bracket 12 Switch 13 Lever 13a Support point

Claims (4)

  A drawer body on which a food can be placed and which is formed integrally with an open / close door capable of opening and closing an opening of a heating chamber formed in the cooker body, and supports the drawer body and the cooker body A slide mechanism that allows the drawer body to be taken in and out, a rack gear provided in the slide mechanism for automatically opening and closing the opening and closing door, and a motor that drives a pinion gear that meshes with the rack gear. A drawer-type cooking device comprising a connection / disconnection mechanism capable of switching connection / disconnection of power transmission between the motor and the rack gear.   The drawer-type heating cooker according to claim 1, wherein the connection / disconnection mechanism is an electromagnetic clutch disposed between the motor and the pinion gear.   The drawer-type heating cooker according to claim 1, wherein the connecting / disconnecting mechanism is a lever mechanism capable of changing a position of the motor and the pinion gear with respect to the rack gear.   The drawer-type heating cooker according to claim 2 or 3, wherein the connection / disconnection mechanism is operated by a switch provided on an operation unit provided in the cooker body.