JP2008025889A - Heating cooker having drawer-type automatic opening and closing door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heating cooker having a drawer-type automatic opening and closing door capable of reducing/eliminating influence (falling/leakage and the like) of a cooked object such as food caused by impact shock generated in opening and closing the door, by performing fine control in opening and closing the door. <P>SOLUTION: When a specific position detecting means detects a stop front-side position (door full-opening switch Pso in full-opening, and intermediate switch Psi in full-closing) disposed in front of a stop position of the opening and closing door, a speed control means controls a driving means and reduces a moving speed of a drawer body. A position for automatically stopping the door (full-opening position Po, full-closing position Pc) with respect to the door opening and closing is confirmed in start and termination of cooking to control an opening and closing speed to the stop. As the sudden stop at the stop position, of the drawer body can be prevented, the impact shock in stopping can be reduced, and the influence on the cooked object such as food can be reduced/eliminated. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cooking device having a drawer-type automatic opening / closing door such as a microwave oven having a drawer-type heating space.

  Conventionally, a drawer body on which an object to be heated can be placed can be pulled out together with an opening / closing door with respect to the cooker body. A drawer-type heating cooker that can be closed is proposed (Patent Document 1, Patent Document 2). In this type of drawer-type heating cooker, an apparatus main body (cooker main body) having a cooking chamber (heating chamber) that accommodates an object to be heated, an open / close door that shuts off the cooking chamber from the outside air, and interlocked with the open / close door And a heating container (drawer) on which a bottom plate or an object to be cooked can be placed. More specifically, the bottom plate or the heating container is smoothly slid by the slide mechanism, and the rotation output of the motor is transmitted to the sliding mechanism via a transmission means such as a rack and pinion mechanism, so that the bottom plate or the heating container is attached to the device. The main body can be pulled out or moved in the receiving direction. In a state where the bottom plate or the heating container is accommodated in the device main body, the open / close door blocks the cooking chamber from the outside air. The heating cooker described in Patent Document 2 forms a heating chamber for confining microwaves by covering the opening of the heating container having an opening formed in the upper part thereof and capable of being pulled out from the cooker main body with a lid portion. Leakage of radio waves is prevented by providing a choke groove between the opening peripheral edge of the lip and the lid.

  However, in a conventional cooking device having an automatic opening / closing door, when the object to be cooked is a liquid or liquid in a cup, or a soup placed in a shallow soup dish When the object is accommodated in the heating chamber or taken out, if the door is opened and closed at a constant speed, there is a possibility that the cup falls and the soup overflows.

When cooking food, it is necessary to open and close the door before and after heating, but the opening and closing door and the table part on which the object to be heated is placed are an integrated drawer, and the overall inertia is large. This inertia greatly depends on the weight of the cooked food (heated food). Therefore, even when the door is automatically opened and closed, a large force tends to be applied to the opening and closing door when the door is stopped. In such a case, a position error occurs in the position control, and a large acceleration occurs in the heated object accommodated in the drawer, and the food is normally heated so that the food falls or overflows due to the impact. There was nothing.
Japanese Patent Application Laid-Open No. 3-45820 (page 2, lower left column, line 6 to page 3, upper right column, line 16, FIG. 1 to FIG. 1) Japanese Patent Laid-Open No. 11-237053 (paragraphs [0029] to [0032], FIG. 1)

  Therefore, in a cooking device having a drawer-type automatic opening / closing door, when the door is opened / closed, it is stopped when starting and stopping the movement of the drawer body in order to suppress the degree of impact that is likely to occur on the heated object when stopping. There is a problem to be solved in that speed control can be performed so as to reduce the speed.

  The object of the present invention is to perform fine control when the door is opened and closed, to reduce / eliminate the influence (falling, overflowing, etc.) on food and other cooked items caused by the impact generated when the door is opened and closed, and abnormal noise generated at the time of the impact It is an object of the present invention to provide a cooking device having a pull-out type automatic opening / closing door that can suppress the above.

  In order to solve the above-mentioned problems, a cooking device having a drawer-type automatic opening / closing door according to the present invention has a cooking chamber body in which a heating chamber is formed, and can be pulled out and stored in the heating chamber. In a drawer-type heating cooker provided with a drawer body integrally having an open / close door capable of closing the opening of the heating chamber in a state, and a driving means for driving the drawer body in the open / close direction, the open / close door is in its stop position Specific position detecting means for detecting a position before stopping and speed control means for controlling the speed of the drawer by the driving means, wherein the speed control means is configured to stop the stop by the specific position detecting means. In response to the detection of the front position, the speed of the drawer is reduced.

  According to the heating cooker having the pull-out type automatic opening / closing door, when the specific position detecting means detects the stop front position provided in front of the stop position of the opening / closing door, the speed control means is responsive to the detection. Controls the driving means to decelerate the moving speed of the drawer. Therefore, it is possible to recognize a position where the door opening / closing at the start and end of cooking should be automatically stopped and to control the opening / closing speed leading to the stop. For example, since the speed starts to decrease from the pre-stop position of the drawer body to the stop position, the drawer body does not stop suddenly at the stop position, and the degree of impact at the time of the stop is suppressed, and food, etc. The influence on the food can be reduced or eliminated.

  In the cooking device having the pull-out type automatic opening / closing door, the stop position is set to the fully open position of the opening / closing door, and a fully open detection switch that can be detected by the specific position detecting means can be disposed at the position before the stop. . The stop position may be a fully closed position of the open / close door, and an intermediate switch that can be detected by the specific position detecting means may be disposed at the position before the stop. In the use mode of a normal heating cooker, the open / close door is most likely to have the fully open position or the fully closed position as the stop position, so the speed control of the drawer (open / close door) is controlled with respect to the fully open position or the fully closed position. It is realistic to do.

  In the heating cooker having the drawer-type automatic opening / closing door, the speed control means is attached to the cooker main body at a position closer to the fully-closed position than the position before the stop and provided in the drawer body. It is preferable that the closing speed of the drawer body is accelerated in response to reaching the latch ride-up position where the latch hook is started to be engaged. According to the heating cooker having the drawer-type automatic opening / closing door, momentum is required on the drawer body side in order to engage the latch head provided in the drawer body with the latch hook attached to the cooker body. Therefore, when the latch head reaches the latch ride-up position, it is possible to respond to this and accelerate the closing speed of the drawer so that the latch ride can be overcome.

  In the cooking device having the drawer-type automatic opening / closing door, the driving means is provided with a counting means for outputting a count corresponding to the movement amount of the drawer body, and the movement amount of the drawer body is determined by the counting means. Can be measured. For example, when the driving means is a motor, its rotational output is usually converted into the amount of movement of the drawer by a rack and pinion mechanism. In this case, the output rotation amount of the motor corresponds to the movement amount of the drawer. When the output rotation amount is counted by a counting means such as a rotary encoder, the counting means can function as a position detection means, and the detected count amount becomes a value for indirectly detecting the position of the drawer. Such indirect detection of the position of the drawer body allows fine speed control in a relatively short section between the position before the stop and the complete stop, for example.

  In the cooking device having the pull-out type automatic opening / closing door, it is preferable that the speed control means can arbitrarily change the opening / closing speed of the opening / closing door. By making it possible to arbitrarily change the opening / closing speed of the opening / closing door, it is possible to set the opening / closing speed according to the user's preference. Furthermore, it is preferable to notify the user of the abnormality detection by a notification means such as sound and display when the opening / closing door is opened and closed, especially when an abnormality is detected when the door is stopped. It is possible to notify the user of the abnormality detection by a notification means such as sound and display.

  Since the cooking device having the drawer type automatic opening / closing door according to the present invention is configured as described above, when the drawer body is stopped, the speed control is performed from the near position detected by the specific position detecting means. As a result, even if the weight of the drawer body changes greatly, by performing fine control before stopping, the impact on food caused by the stop (falling, dripping, etc.) due to the stop when opening and closing the door and at the time of impact Abnormal noise generated can be suppressed. Further, when an abnormality occurs in the speed of the drawer, it can be notified by display and sound. Furthermore, since the moving speed of the open / close door from the position before the stop to the stop position can be automatically controlled and the speed at that time can be set to an arbitrary speed, it can be configured to meet the user's needs.

  Hereinafter, an embodiment of a heating cooker (hereinafter abbreviated as “heating cooker”) having a drawer-type automatic opening / closing door according to the present invention will be described based on the attached drawings. FIG. 1 is a perspective view (door open state) showing an outline of a heating cooker according to the present invention, and FIGS. 2 to 4 are side cross-sectional views showing the heating cooker shown in FIG. 1 when the door is fully opened. FIG. 4 is a side sectional view showing a state where the door is in a deceleration position, and a side sectional view showing a state where the door is in a fully closed state.

  As shown in FIG. 1, the cooking device includes a cooking device main body 1, and a drawer body 2 on which an object to be cooked can be placed together with its storage container and can be pulled out and stored from the cooking device main body 1. It has. A heating chamber 12 in which the drawer body 2 can advance and retreat is formed inside the cooker body 1. The inside of the heating chamber 12 is surrounded by the left, right, top, bottom, and back walls, but the front surface is formed in the opening 12 a for taking in and out the drawer body 2.

  The drawer body 2 can be pulled out from the inside of the heating chamber 12 of the cooker body 1 to the outside in the direction indicated by the arrow, or vice versa, with respect to the cooker body 1 by a plurality of slide mechanisms 4 described later. It is arranged to be movable. The drawer body 2 includes an opening / closing door (hereinafter abbreviated as “door”) 2a for opening and closing the heating chamber, and a table 2b on which the door 2a is attached and on which an object to be heated is placed. The upper space is formed in the heating container 3 for accommodating the object to be heated and the container. The heating container 3 has a front plate attached to the door 2a, left and right side plates extending rearward from the left and right of the front plate, and a rear plate connected to the side plate on the back (back) side thereof. The plate is attached to the table 2b. In addition, a container opening 3a through which an object to be heated can be taken in and out is formed in the upper part of the heating container 3. Although not shown in the figure, the microwave generator including a magnetron that generates microwaves and a waveguide that propagates the microwaves generated by the magnetron is disposed in the cooker body 1. It is installed. Microwaves generated by the magnetron propagate through the waveguide and are supplied into the heating chamber 12 from the power supply port.

  The heating cooker includes slide mechanisms 4 and 4 disposed on the left and right outer sides of the heating container 3 in order to move the drawer body 2 within the cooking appliance body 1. A similar slide mechanism is also arranged on the bottom side of the heating container 3. In connection with the slide mechanism on the bottom side of the heating container 3, a drive mechanism such as a motor for moving the slide body 2 in and out of the heating chamber 12, and a rack and pinion that converts the rotational output of the drive mechanism into a linear motion Although a motion conversion motion such as a mechanism is also provided, these mechanisms are not shown. The drawer body 2 is movable between a fully opened position where the heating container 3 is completely pulled out from the heating chamber 12 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, the door 2 a closes the opening 12 a of the heating chamber 12, so that the heating chamber 12 is sealed by the inner wall surface of the cooker body 1 and the drawer body 2.

  As shown in FIGS. 2 to 4, each slide mechanism 4 is formed of a nested slide rail that allows the movable rail 4 b to slide with respect to the fixed rail 4 a. Each slide mechanism 4 is provided in a passage box formed in the cooker main body 1 on each of the left and right sides and the bottom side of the heating chamber 12, and the fixed rail 4a is attached to the outside of the heating chamber 12 in the passage box. The movable rail 4b can move in and out of 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 12.

  One slide mechanism 4 is provided with a mechanism for operating the full-close detection switch 8 or the full-open detection switch 10 when the drawer body 2 is moved to the full-close position and the full-open position, respectively. For the fully closed detection, when the drawer body 2 is pushed from the open state to the fully closed position, the operating lever (latch head) 9 provided at the innermost position of the movable rail 4b is engaged with the latch hook 11. Then, the fully closed detection switch 8 is turned on. A front position detection switch (intermediate switch) 5 is provided at a position slightly in front of the fully closed position (intermediate position). The position of the front position detection switch 5 is set to a position at which the user's finger or hand is easily caught between the doors when the door is closed. The fully open detection switch 10 and the intermediate detection switch 5 are attached to the cooker main body 1 via a switch attachment angle 6.

  An actuator 7 that can be operated when the fully open detection switch 10 and the intermediate switch 5 reach their respective positions is attached to the innermost part of the movable rail 4b. The actuator 7 turns off the switch when it is out of each position. Therefore, in the drawer 2, the actuator 7 operates the fully open detection switch 10 in the fully open position (FIG. 1), and the actuator 7 operates the intermediate switch 5 in the middle of closing from the fully open position (FIG. 2). In the fully closed position, the movable lever 9 engages with the latch hook 11 to activate the fully closed detection switch 8 (FIG. 3). As described above, the position of the drawer body 2 (that is, the door 2a) is known by the operation of the detection switches 10, 5, and 8 arranged in accordance with the fully open, intermediate, and fully closed positions of the drawer body 2. Can do. In the passage box, in addition to the positions where the fully open, intermediate and fully closed detection switches 10, 5, and 8 are arranged, a plurality of detection switches can be arranged to detect a more detailed drawing position of the drawer body 2. You can also

  When the drawer body 2 is pulled out, the operating lever 9 is detached from the latch hook 11, and the full-close detection switch 8 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 8 can be used as a part of a switch for controlling the oscillation and stoppage of the microwave. The user can set how the cooking device is actually heated by operating other operation switches. In addition, the cooking device main body 1 (or the door 2a) can be provided with a main switch for starting cooking and an operation switch for operating the cooking device including an opening / closing operation of the door 2a.

  Thus, the heating cooker can draw out the drawer body 2 on which the object to be heated can be placed, together with the door 2a, with respect to the cooker body 1, and put the drawer body 2 into the heating chamber 12 in the cooker body 1. In the accommodated state, the drawer 12 is configured as a drawer-type cooking device capable of closing the opening 12a of the heating chamber 12 with the door 2a.

  FIG. 5 shows a chart showing a detailed example of opening / closing control including the speed of the opening / closing door 2a. It is assumed that the opening / closing door 2a is in the fully closed position Pc at the beginning of opening / closing control of the opening / closing door. The operation of the open / close door is started in the direction of door opening by a drive mechanism such as a motor by full power input. Therefore, the drawer body 2 starts to move in the door opening direction with the maximum acceleration. The latch riding position Pr is set at a position slightly opened (ten and several millimeters) from the fully closed position Pc, and the opening speed of the drawer body 2 is reduced immediately after passing the latch riding position Pr. Thereafter, the drawer body 2 continues the opening operation at the decelerated constant opening speed. A pulse for reading the rotational speed is constantly generated from a pulse generator attached to the motor.

  When the actuator 7 reaches the arrangement position Pso of the full-opening detection switch 10 and turns it on, the moving speed of the drawer body 2 is slightly decelerated immediately after the on-operation of the full-opening detection switch 10 is input to the control device. . The degree of deceleration is such that the drawer 2 is completely stopped when the number of pulses generated by the pulse generator after the ON operation of the fully open detection switch 10 is input to the control device reaches a predetermined value. Is set. The drawer body 2 occupies the fully open position at the position Po.

  Next, door closing control when the open / close door 2a is operated from the fully open position Po in the door closing direction will be described. The operation in the door closing direction is performed at a constant closing speed after the initial acceleration period has elapsed. When the actuator 7 reaches the position Psi where the intermediate switch 5 is disposed and turns on the intermediate switch 5, the on operation is input to the control device, and the control device outputs a control signal for starting the low speed operation. The control device predicts the actual position of the drawer body 2 from moment to moment, and from the position Pre advanced from the position of the intermediate switch 5 in a predetermined closing direction, the actual position of the drawer body 2 at the closing speed set at a deceleration is set. Start low-speed operation.

  When the drawer body 2 continues the closing operation at the deceleration speed and the actuator 7 reaches the latch ride-up position Pr, the fact is inputted to the control device, and the latch hook 11 (see FIG. 2 etc.) gives momentum to the control device. Set the acceleration speed so that you can get over the latch. When the latch hook 11 is completely engaged with the latch head 9, the open / close door 2a occupies the fully closed position.

  When an abnormality is detected when the opening / closing door is opened / closed, the user is notified of the abnormality detection by a notification means such as sound and display.

  In this way, the switch for instructing deceleration is detected just before the opening / closing door 2a opens and closes, the speed of the opening / closing door 2a is reduced, and further, it gradually decelerates to just before the full opening / closing position, and then gently stops after detecting the full opening / closing position. Let

The perspective view of a drawer type cooking-by-heating machine. Side view of the drawer-type cooking device (with the door fully open). The side view of a drawer type cooking-by-heating machine (state where the door has come to the deceleration position). Side view of a drawer-type cooking device (with the door fully closed). Chart showing detailed example of open / close control including speed of open / close door in drawer-type cooking device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cooker body 2 Drawer body 2a Open / close door 2b Table 3 Heating container 3a Container opening 4 Slide mechanism 4a Fixed rail 4b Movable rail 5 Intermediate detection switch (front position detection switch)
6 Switch mounting angle 7 Actuator 8 Fully closed detection switch 9 Movable lever (latch head) 10 Fully open detection switch 11 Latch hook 12 Heating chamber 12a Opening

Claims (7)

A cooker body in which a heating chamber is formed, a drawer body integrally having an open / close door that can be pulled out and housed in the heating chamber and can close the opening of the heating chamber in the housed state, and In a drawer-type heating cooker provided with a driving means for driving the drawer body in the opening and closing direction,
A specific position detecting means for detecting a near-stop position provided in front of the stop position of the open / close door; and a speed control means for controlling the speed of the drawer by the driving means,
The cooking device having a pull-out type automatic opening / closing door, wherein the speed control means reduces the speed of the drawer body in response to detection of the position before the stop by the specific position detection means.   2. The drawer type according to claim 1, wherein the stop position is a fully open position of the open / close door, and a fully open detection switch that can be detected by the specific position detecting means is disposed at a position before the stop. A cooking device with an automatic door.   2. The drawer type according to claim 1, wherein the stop position is a fully closed position of the open / close door, and an intermediate switch that can be detected by the specific position detecting means is disposed at the position before the stop. A cooking device with an automatic door.   The speed control means is a position that is closer to the fully closed position than the position before the stop, and a latch riding position at which a latch head provided in the drawer starts to engage with a latch hook attached to the cooker body. The cooking device having a drawer-type automatic opening and closing door according to claim 3, wherein the closing speed of the drawer body is accelerated in response to reaching the position.   The driving means is provided with a counting means for outputting a count corresponding to the amount of movement of the drawer, and the amount of movement of the drawer is measured by the counting means. A cooking device having the drawer-type automatic opening / closing door according to any one of 4.   The cooking device having a drawer-type automatic opening / closing door according to any one of claims 1 to 5, wherein the speed control means can arbitrarily change the opening / closing speed of the opening / closing door. 7. The user according to claim 1, wherein an abnormality is detected by an informing means such as a sound or a display in response to an abnormality being detected when the opening / closing door is opened or closed. A cooking device with a drawer-type automatic door.