JPH06221574A - Electronic range - Google Patents

Abstract

PURPOSE:To provide an electronic range with an opening/closing door which allows the opening thereof not only in the direction of moving a slide door vertically but also vertically while sliding upward or downward. CONSTITUTION:A pin guide is provided on an upper side opposite to a hanging support point of a slide door 4 and a bar-shaped body 19 is housed into the slide door 4 while a tapered tip part is made free to stick out to the side of the slide door 4 or to retract with a spring 20. This enables the opening of the door vertically with a hanging support point as rotating axis.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microwave oven, and more particularly to a microwave oven having an opening / closing door (hereinafter referred to as "slide door") of a vertical slide type at the entrance of a heating chamber.

[0002]

2. Description of the Related Art A conventional microwave oven has, for example, an overall structure as shown in FIG. 19, and the configuration of the microwave oven main body case 1 viewed from the front side 2 is shown in FIG.
As shown in FIG. 21C, the configuration viewed from above centering on the front surface 2 is as shown in FIG. 19 to 2
As shown in FIG. 1, the microwave oven has a pair of left and right guide rails 3 arranged on a front surface 2 of a main body case 1, and a slide door 4 for opening and closing an inlet of a heating chamber 7 is provided between the left and right guide rails 3, 3. , Guided by a hanging wire 6 mounted on a pulley 5a and a driven pulley 5b which are rotationally driven by a motor (shown as a in FIG. 20) via a belt (shown as b in FIG. 20), and the microwave oven main body The front surface of the case 1 is moved up and down to open and close the inlet of the heating chamber 7. Further, on the side wall of the guide rail 3, a door slide hole (hereinafter referred to as “door slide hole”) 8 is provided in parallel with the front surface 2 of the microwave oven main body case 1. Also,
On the side surface of the slide door 4, upper and lower pin bodies 4a and 4b protruding laterally are fixed.
b is loosely fitted in the door slide hole 8, and the suspension wire 6 is fixed to the tip of the upper pin body 4a. Therefore, the slide door 4 guided by the suspending wire 6 can move up and down along the door slide hole 8 described above. Note that the guide rail 3 is omitted in FIGS. 20 (a) and 20 (c).

Further, the sliding door 4 is provided with a pair of guide rails on the left and right sides of the sliding door 4 so as not to separate from the front surface 2 of the microwave oven main body case 1 when the front surface 2 of the microwave oven main body case 1 is moved up and down. 3 is a sliding door 4
Has a portion 3a that wraps around the front surface of the and covers the left and right portions thereof. In addition, when the slide door 4 descends to the entrance of the heating chamber 7 of the microwave oven, the high frequency oscillation source (magnetron) of the heating chamber 7 radiates a high frequency (for example, microwave) to the cooked food to cook. I do. At this time, if the front surface 2 and the slide door 4 are not in close contact with each other and there is a gap, high frequency may leak from the gap and become cheaper. Therefore, in order to bring the front surface 2 and the slide door 4 into close contact with each other to prevent high-frequency leakage, a spacer 9 is inserted between the guide rail 3 and the slide door 4, and the door 4 is brought into close contact with the microwave oven case surface. I am letting you.

[0004]

However, in the above-described conventional microwave oven, since the door slide hole 8 of the door rail 3 is vertically extended in parallel with the front surface 2 of the microwave oven main body case 1, the heating chamber 7 is provided. Depending on how to adjust the installation of the slide door that opens and closes the entrance, when the slide door 4 is moved up and down, friction between the slide door 4 and the microwave oven main body case 1 front face 2 and the spacer 9 and the door rail 3 causes a motor and induction. The life of the wire 6 may be shortened. Further, structurally, friction may occur in a large number of parts, which may lead to shortcomings such as a short life of the parts.

Further, since the slide door 4 for opening and closing the entrance of the heating chamber is of a vertical slide type, even if the inside of the heating chamber 7 of the microwave oven can be cleaned, it is difficult to clean the back side of the door 4 and it is difficult to get it. There were difficulties. Also, depending on the type of microwave oven, there is a structure in which the entire inside of the slide door cannot be cleaned. Further, in the configuration in which the door that opens and closes the heating chamber entrance is moved up and down along the front surface of the microwave oven body case, even if a detection sensor is installed at the lower end of the door,
If a person accidentally touched the detection sensor, there was a risk that the door would suddenly drop.

Therefore, according to the present invention, even if the slide door moves up and down on the surface of the microwave oven main body, friction between the slide door and the surface of the microwave oven main body, spacers, door rails, etc. does not cause frictional wear. Cleaning the interior,
An object of the present invention is to provide a microwave oven having a door structure in which the back side of the door can be easily cleaned.

Another object of the present invention is to provide a microwave oven having a structure in which there is no danger that a hand will be caught during vertical movement of a slide door. Furthermore, the present invention not only can open and close the heating chamber entrance door only in the vertical movement direction of the slide door, but can also open vertically and horizontally, and even if the microwave storage space is limited, the door can be opened and closed. It is intended to provide a microwave oven having a structure.

[0008]

In order to achieve the above object, the present invention provides, in claim 1, a heating chamber, a slide door for opening and closing a heating chamber inlet up and down, and the slide door from the left and right sides up and down. Connected to a pair of left and right guide rails, which are movably clamped and provided with door slide holes on the side surfaces, and a suspension support point of the slide door, and the motor is driven to move the slide door up and down along the door slide hole. In the microwave oven provided with a door guide, the guide rail has side door slide holes, the lower portion is in close contact with the heating chamber inlet opening, and the upper portion is protruded from the heating chamber inlet opening to the front of the microwave oven main body case. It is characterized by using the one formed so as to be inclined.

Further, in claim 2, the heating chamber, the slide door for opening and closing the entrance of the heating chamber up and down, the slide door is vertically movably clamped from both left and right sides, and the left and right sides are provided with door slide holes. A microwave oven equipped with a pair of guide rails and a door guide connected to a suspension support point of the slide door and moving the slide door up and down along the door slide hole by a motor drive. A rolling element is provided on the front surface of the microwave oven main body case, and the sliding door is movably arranged on the front surface of the microwave oven main body case. According to a third aspect of the present invention, a rolling member drop recess on the back surface of the slide door is provided on the side surface of the heating chamber of the microwave oven main body case, and the heating chamber inlet is in close contact with the slide door surface.

Further, according to the present invention, a heating chamber, a slide door for opening and closing the inlet of the heating chamber up and down, and a pair of left and right doors, which are vertically sandwiched between the left and right sides and have door slide holes on the side surfaces, are provided. In a microwave oven provided with a guide rail and a door guide that is connected to a suspension support point of a slide door and moves the slide door up and down along the door slide hole by a motor drive, a microwave oven on the opposite side of the suspension support point. On the lower side or upper side of the slide door, the rod-shaped main body is stored inside the slide door, and the rod-shaped main body is stored inside the slide door. A pin guide is provided, and not only the slide door can be opened and closed up and down, but it is also provided so as to be vertically openable and pivotable with a hanging support point as a pivot. Than it is.

Further, according to a fifth aspect of the present invention, in the structure of the fourth aspect, the hook head shaft is projected at the hanging support point in a direction perpendicular to the slide door surface, and hook switch means is provided at the lower end level of the heating chamber inlet. It is characterized in that an electric circuit for turning on / off the high frequency radio wave source of the heating chamber is provided by contact / separation of the hook head shaft and the hook switch means in accordance with the vertical opening rotation of the slide door. Further, in claim 6, in claim 1, claim 2,
In the microwave oven according to claim 3 and claim 4,
A foreign matter contact detection means is provided at the lower end of the slide door, and a motor drive stopping means for shutting off the drive circuit of the slide door vertical movement drive motor in response to the foreign matter contact detection of the foreign matter contact detection means is provided. Is.

Further, according to a seventh aspect, an outer frame which is formed so as to surround the outside of the heating chamber and accommodates the heating chamber therein, and one of the left and right side faces of the outer frame or one of the upper and lower end faces thereof is provided. A heating chamber entrance door rotation shaft is provided on one end side of the heating chamber entrance, and a tapered end is provided on the opposite side by elastic means so that it can be projected and withdrawn from the outer frame surface. The guide rod is configured to be freely and laterally open and rotatable, and extends vertically in the outer frame side surface, a threaded rod disposed on the outer frame side surface parallel to the guide rod, and the screw rod is rotated to rotate Drive means for driving the frame so as to be movable up and down along the guide rod.

Further, according to the present invention, in a vertical slide type microwave oven which opens and closes an entrance of the heating chamber up and down, a heating chamber entrance door opening and closing waiting position for setting the heating chamber entrance door when the heating chamber is not heated is set to a waiting position. It is characterized in that a fixed position setting means is provided.

[0014]

According to the microwave oven of the present invention, the door slide hole provided on the side surface of the guide rail is formed so as to be inclined from the upper portion of the microwave oven main body case toward the heating chamber inlet opening and is in close contact with the heating chamber inlet opening. Therefore, there is no radio wave leakage from the heating room.

According to the microwave oven of claim 2,
The sliding door that opens and closes the entrance of the heating chamber up and down has a rolling element on the back side, and it is movably arranged on the front of the microwave oven body case. Friction on the surface is small. Further, according to the microwave oven of the third aspect, since the rolling element fits in the recessed portion of the rolling element on the rear surface of the sliding door on the side surface of the heating chamber, the rear surface of the sliding door and the front surface of the heating chamber are in close contact with each other. Further, high frequency radio wave leakage from the heating chamber is more reliably eliminated. Further, according to the structure of claim 4, not only can the sliding door be opened and closed by moving up and down, but it can also be vertically opened and rotated about the hanging support point.

Further, according to the microwave oven of the present invention, the hook head shaft is projected at the hanging support point of the slide door in the direction perpendicular to the slide door surface, and hook switch means is provided at the lower end level of the heating chamber entrance to hook the hook. The heating chamber radio wave source is turned on / off according to the contact / separation of the head shaft and hook switch means.
Since FF is performed, not only the vertical movement of the slide door can be opened and closed, but also vertical opening and rotation can be performed with the hanging support point as a rotation axis. In addition, the radio source is turned off depending on the vertical opening of the heating chamber entrance.
Since it is FF, there is no electric wave leakage when the sliding door is opened.

According to the microwave oven of the present invention, the foreign matter contact detection means is provided at the lower end of the slide door, and the drive of the slide door vertical movement drive motor is stopped in response to the foreign matter contact detection. You won't get caught in the door. Further, according to the microwave oven of claim 7, not only is the vertical sliding door opened and closed vertically, but also the vertical opening rotary shaft provided on either one of the upper and lower end surfaces in the outer frame or the left and right side surfaces. A horizontal opening rotation shaft is provided on any one side surface, and not only vertical slide opening / closing but also vertical opening and horizontal opening are possible. Further, according to the microwave oven of the eighth aspect, the door waiting position when the slide door is not heating the cooked food can be preset.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. Note that FIGS. 1 to 18 according to each of the following examples
Then, the same parts as those in FIGS. 19 to 21 are designated by the same reference numerals. First Embodiment FIG. 1 is a perspective view showing the overall structure of a microwave oven according to a first embodiment of the present invention. 2A and 2B are operation explanatory views of the slide door 4 centering on the front surface of the main body case 1 of the microwave oven. In FIG. 1, 1 is a microwave oven main body case, 2 is a front surface of the microwave oven main body case 1, and 3 is a main body case so as to sandwich a slide door 4 for opening and closing an inlet of a heating chamber 7 of the microwave oven from the left and right. A pair of left and right guide rails 4a, 4 arranged in the vertical direction on the front surface of 1
b is an upper and lower pin body fixed to the side surface of the slide door 4 so as to project laterally, and 5a is an upper pulley on which a belt 6 rotatably driven by a motor (not shown) is mounted.
Reference numeral b is a lower pulley driven by the suspension wire 6, and a pin body 4a provided on the upper side surface of the slide door 4 serves as a suspension support point. The rotation of the pulley 5a moves the slide door 4 up and down. The hanging wire 6 is connected.

Further, as shown in FIGS. 2 (a) and 2 (b), on the side surfaces of the pair of left and right guide rails 3, in the upper part, they project forward of the front surface 2 of the microwave oven main body case 1, and in the lower heating chamber 7 position. In the above, a door slide hole 8a formed so as to tilt and move at a close position close to the entrance of the heating chamber is provided. The slide hole 8a is, for example, a long hole that is substantially straight, and the center line of the long hole has an angle with respect to the plane of the front surface 2 of the main body case 1 such that the upper side opens. Has been done. In this slide hole 8a,
The pin bodies 4a and 4b are loosely fitted. A suspension wire 6 is mounted between the upper pulley 5a and the lower pulley 5b, and the suspension wire 6 is connected to the pin body 4a at the suspension support point on the upper side surface of the slide door 4. The slide door 4 is moved up and down along the door slide hole 8a according to the rotational drive of the pulley 5a.
In the microwave oven of the present embodiment, the slide door 4 at the inlet position of the heating chamber 7 is located close to the inlet of the heating chamber, so that radio wave leakage from the heating chamber does not occur.

Embodiment 2 FIGS. 3 (a) and 3 (b) are enlarged side views of essential parts for showing an operating state of a vertically sliding door of a microwave oven according to a second embodiment of the present invention. In addition, FIG. 4 is an enlarged back side perspective view showing the structure of the slide door 4 of the microwave oven according to the present embodiment. The microwave oven of this embodiment is shown in FIG.
Similar to the microwave oven shown in FIG. 1, slide doors 4 for opening and closing the entrance of the heating chamber 7 are provided on both the left and right sides of the heating chamber 7 of the microwave oven main body case 1. The guide rail 3 is provided. Further, pulleys 5a and 5b are provided on the upper part of the microwave oven main body case 1 and on the lower part of the heating chamber 7, and a belt b which is rotationally driven by a motor a is mounted on the pulleys 5a and 5b on the left and right sides. The sliding wire 4 is moved in the vertical direction by the suspended hanging wire 6 to open and close the inlet of the heating chamber 7 in the vertical direction.

As shown in FIG. 4, the slide door 4 is provided with four rollers 11 which rotate upward and downward on the back surface thereof so as to be rotatable left and right respectively. The microwave oven of the present embodiment has such a roller 1 on the back side of the slide door 4.
1, that is, since the rolling elements are provided, a constant gap is generated between the back surface of the door and the surface of the microwave oven main body case, and both left and right sides are held by the guide rails 3, and the front surface 2 of the microwave oven main body case 1 is held by the hanging wire 6. If you guide,
The slide door 4 can move up and down on the front surface of the microwave oven without receiving friction.

Embodiment 3 FIGS. 5 (a) and 5 (b) are enlarged side views of the essential parts showing the operating state of the microwave oven according to the third embodiment of the present invention, and FIG. 6 shows the microwave oven of this embodiment. It is a front view which shows a structure (however, the state which removed the guide rail and the slide door). The microwave oven according to the present embodiment is provided with four rollers 11, 11, 11, 11 provided on the back surface of the slide door 4 on the left and right sides of the opening of the heating chamber 7 of the microwave oven case main body 4 at four positions for dropping. The recesses 12, 12, 12, 12 are provided, and the door slide hole 8b is formed in accordance with the recessed recess. Other than this, the microwave oven has the same configuration as the microwave oven shown in FIGS. Therefore, as described above, since the roller drop recesses are provided on the left and right side surfaces of the opening of the heating chamber 7, respectively, when the slide door 4 moves to the vicinity of the opening of the heating chamber, the roller drop recesses, The slide door and the microwave oven main body case surface are in close contact with each other to prevent radio wave leakage, and when lifted up from the roller drop recess 12 on the microwave oven main body case surface, the microwave oven main body case surface can be smoothly moved again.

Embodiment 4 FIGS. 7 (a) and 7 (b) show a vertically operating state and a vertically opened state of a slide door of a microwave oven according to a fourth embodiment of the present invention, and a structural diagram of a main part. Further, FIG. 8 is an enlarged side view of a main part showing the structure of the slide door 4, and FIG. 9 is a partial sectional perspective view showing the upper structure of the slide door. In the sliding door operation structure of the microwave oven of this embodiment, the hanging wire 6 is mounted on the upper pulley 5a and the lower pulley 5b on the front portion of the microwave oven main body (not shown) as shown in FIG. Sliding door 4 is a supporting point 1 at the bottom of the side.
6 is supported by a ring 13 so as to be vertically movable. Further, as shown in FIG. 8, the hanging support point 16 is provided with a latch hook 14 extending in the direction of 90 degrees with the surface of the door 4, and the guide rail 3 is erected at an angle in a direction perpendicular to the latch rail 14. An angle plate 3b having a guide hole 8c for the latch hook 14 is provided. As shown in FIG. 8, the angle plate 3b is provided with the latch hook 1 according to the vertical rotation of the latch hook (hook shaft) 14 described above.
A latch switch 15 for contacting / separating 4 is arranged behind the hanging position 16 of the door 4 at the level position L.
A stopper 14a is provided in the middle of the latch hook 14 so as to extend toward the slide door 4 side.
4a is an angle plate 3 when the latch hook 14 is rotated.
b It contacts the back surface of the latch hook 14 and stops the rotation of the latch hook 14 at a constant angle.

The above-mentioned hanging support point level position L coincides with the lower end of the hook shaft guide hole 8c of the angle plate 3b,
The latch hook 14 is set to match the position where it is stopped at the lower end of the hook shaft guide hole 8c, and when the latch hook 14 contacts the latch switch 15, the drive circuit is allowed to be connected to the heating chamber radio wave source. On the other hand, when separated, the connection is cut off and the high frequency radiation is stopped. Further, a pin guide 18 having a tapered tip is provided on the upper end surface of the slide door 4.
The pin guide 18 has a tip end portion formed in a tapered shape on both left and right sides, and a rod-shaped main body portion 19 is attached to the door 4 by a spring 20.
It is urged to the side of the so that it can project and retract freely. Therefore, when the sliding door 4 is pulled toward you, the sliding door 4 pivots in the vertical direction about the hanging support point 16 and opens vertically. Further, at the time of this vertical opening, the latch hook 14 is separated from the hook switch 15, high-frequency radiation is stopped, and even if the heating chamber entrance door is opened, radio wave leakage does not occur. Also,
Since the stopper 14a contacts the angle plate 3b, the slide door 4 does not open vertically beyond a certain angle.

Further, the microwave oven of this embodiment has the configuration shown in FIG.
As shown in FIG. 0, a foot-operated switch 21 (or a hand-operated switch may be provided), and the foot-operated switch 2
When step 1 is pressed, the vertical slide drive motor 17 (Fig. 7 (a),
(See (b)) rotates, the door 14 moves upward, and the heating chamber inlet opens. When the switch 21 is stepped on again, the motor 17 rotates in the reverse direction, and the door 4 moves downward.

Embodiment 5 FIG. 11 is an enlarged detailed view showing a main structure of a door provided with a slide door stop device in a slide door of a microwave oven according to a fifth embodiment of the present invention, and FIG. It is a control circuit diagram of a door. The slide door of the present embodiment is provided with a foreign matter contact detection unit 23 at the lower end portion inside the door 14 as shown in FIG. 11, and the foreign matter contact detection unit 23 is inside the tubular body 33 provided on the side surface of the slide door 4. The rod-shaped body 31 inserted so as to project and retract, the sensing plate 25 provided at the lower end of the slide door 4, and the protrusion 27 at the center of the sensing plate 25.
With the support point O as the center of rotation, the rod-shaped body 31 is pushed forward and can be retracted to form an L-shaped lever 29. In addition, springs 26, 26 are provided on the upper surface of the sensing plate 25 to elastically maintain the fixed plates 32, 32 in a fixed position.

Furthermore, the tubular body 33 is supported by the suspension ring 15 attached to the suspension wire 6,
Is held slidably up and down by a pulley (not shown). The rod-shaped body 31 of the foreign matter contact detection unit 23 includes a stop switch 35 (the motor control circuit 17 of the drive motor 17).
The operation plate 36 for activating "a" (FIG. 12) is controlled to be turned on and off), and has a function of operating so as to project and retract. Note that, as shown in FIG. 12, the output signal of the stop switch 35 of the foreign matter contact detection unit 23 is the control circuit 35a.
Entered in. The control circuit 35a receives the motor control circuit 17a according to ON / OFF of the output signal of the stop switch 35.
Turn ON / OFF. In addition, for example, the control circuit 35a
The latch circuit 15 or 15a turns on / off the oscillation circuit 46 of the high-frequency oscillation source according to the output of. in this case,
The oscillation circuit 46 is turned on according to the output of the stop switch 35.
・ Can be turned off. 45 is a power supply. Since the slide door 4 of the microwave oven of this embodiment has the above-described configuration, when a foreign object (for example, a human hand) touches the lower surface of the door 4 while the door 4 is moving vertically, the rod-shaped body 31 is operated. As a result of being pushed out in the direction of the plate 36, and as a result of pushing the operating plate 36, the operating plate 36 contacts the stop switch 35. For this reason, the control circuit 35a and the motor control circuit 17a shown in FIG. 12 operate so as to stop the driving of the drive motor 17, and the downward movement of the slide door 4 is stopped, so that there is a risk that the hand is caught in the slide door 4. Disappears. It goes without saying that the device of this embodiment can be applied not only to the case of the vertical slide type described above but also to all of the slide doors described in the first, second, third and fourth embodiments.

Embodiment 6 FIG. 13 is a perspective view of a main part showing a vertical sliding structure of an outer frame formed so as to surround the outside of a heating chamber in a microwave oven according to a sixth embodiment of the present invention. Is A in FIG.
FIG. In the outer frame 37 of this embodiment, a fixing metal fitting 38 is attached to the right outer wall of the outer frame so as to surround the outside of the heating chamber not shown in FIG.
8 has holes through which a fixing rod and a threaded rod pass. That is, as shown in FIG. 14, a threaded rod 40 extends vertically in the hole on the right side in FIG. 14 through this hole, and a fixing rod 39 extends parallel to the threaded rod 40 in the hole on the left side. ing. Furthermore, a bevel gear 41 is provided on the tops of the left and right threaded rods 40, and the rotational force of the motor 17 is transmitted via a gear 43 attached to a horizontally extending bar 42. The structure is such that it is transmitted to the threaded rod 40 via 44, 43 and the bevel gear 41.

In the outer frame 37, as shown in FIGS.
A type as shown in (c) is conceivable, which is selected according to the shape of the microwave oven, and the opening / closing door is attached to the outer frame. A fixed rod 40 and a threaded rod 39 are used as members for supporting the outer frame 37. Further, as shown in FIG. 16 (b), the support points 45, 45 on both side walls of the lower portion of the outer frame 37.
The lower rotation point of the door 4 is attached to the upper end side wall, and the pin guides 18 and 18 of the slide door 4 (only the right side wall is shown in FIG. 16) are attached to the upper and lower side walls of the outer rod 37. If the outer frame 37 of this embodiment is used so that it can be vertically opened and rotated so that it can be attached and detached, a vertically openable door-structured microwave oven that is also vertically slideable can be constructed. Further, as shown in FIG. 16C, two pin guide holes 18a, 18a are provided on the right side wall of the outer frame 37, and the support points (not shown) of the door 4 are provided on the upper and lower inner wall surfaces of the outer frame. If it is attached to the support point receiving hole, a microwave oven having a side-opening door that also serves as a vertical slide can be configured.

Embodiment 7 The heating chamber opening / closing slide door of the microwave oven according to the present embodiment is, as disclosed in the above-mentioned Embodiment 4 (FIGS. 7 to 9),
It is configured to be able to slide vertically and open vertically, and has a configuration in which a latch switch is arranged at the level of the hanging support point on the side surface of the slide door. Further, the high frequency heating source in the heating chamber is turned on / off in response to ON / OFF of the latch switch according to the vertical opening / closing of the slide door, and heating / non-heating operation is performed. In addition, the opening / closing motor 17 of the slide door and the heating of the heating chamber are
This is performed by the waiting position setting circuit 55 shown in FIG.
In the circuit of FIG. 17, 15 and 15a are latch switches, and 17
Is a sliding door opening / closing motor, 45 is a power supply, 46 is an oscillation circuit of a high-frequency oscillation source, 47 is a control circuit for controlling the operation of the microwave oven as a whole, 48 is an upper detection switch (see FIG. 13), and 49 is a lower detection switch. (See FIG. 14), 50 is a speaker, 51 is a door position setting switch, 52 is a heating sensor, and 53 is a timbre change control circuit.

As shown in FIG. 18, the microwave oven having the structure of the present embodiment, when the "close" in FIG. 18 (c) of the waiting position setting button 54 provided at the lower front of the microwave oven is pressed,
As shown in the circuit diagram of FIG. 17, input to the control circuit 47,
The lower detection switch 49 waits in the "closed" state. Further, when the waiting position is set in the "open" state, the waiting position setting button 54 is pushed "open" as shown in FIG. 18 (c).
Then, the "open" state is the control circuit 47 in the circuit diagram of FIG.
Input to the upper detection switch 48 (48 in FIG. 13)
Detected, and the slide door waits in the upper position “open” state. Then, when the cooking food is heated, the door is opened. In the microwave oven of this embodiment, the food heating sensor 52 detects the optimum heating condition of the food, and the heating is automatically terminated.

When the heating is completed, an end signal is sent to the control circuit 47 in FIG. 17, and the speaker 50 notifies the heating end and a voice and a door opening electric signal for notifying the heating end are sent to the door opening / closing motor 17 to rotate the motor. Causes the door to rise and open automatically. At this time, the notification sound at the end of heating and when the door is opened is changed by the discoloration change control circuit 53 of the notification sound.
The timbre of the notification sound at the end of heating and the timbre of the notification sound when the door is raised (moving) are changed to inform the cook by the speaker 50 of the operating state of the device. According to the microwave oven of the present embodiment, in the conventional microwave oven, the state in which the door is closed is the normal state (that is, the waiting state), and in the case of heating and cooking, the cook opens (a) the door. → (b) Close the door → (c) Put food in the storage → (d) Press the heating button → (e) Open the door → (f) Remove food from the storage → (g) Close the door, etc. According to the user's wishes, the door waiting state of the cooked food is set in advance, and when the waiting state is reached, the microwave oven is automatically operated. Since it is ready to move to the next state, it can be used extremely efficiently.

[0033]

As is apparent from the above description, according to the microwave oven of the first aspect of the present invention, there is no electric wave leakage from the heating chamber inlet opening, although the apparatus configuration is simple. Also, according to the microwave oven of the second aspect, since the friction between the slide door and the surface of the microwave oven main body is small, the life of the device is prolonged. Further, according to the microwave oven of claim 3, friction between the case surface of the microwave oven main body and the slide door is small, the life of the apparatus is long, and there is no leakage of radio waves from the heating chamber. Further, according to the microwave oven of the fourth aspect, since the opening / closing door is used for both vertical sliding and vertical opening / rotating, the microwave oven can be used according to the space space of the microwave oven storage space and the stored food. According to the microwave oven of claim 5, like the microwave oven of claim 4,
The heating chamber opening / closing door is provided so as to be vertically slidable and can be opened vertically, and since the connection circuit of the heating chamber high frequency radio wave source is turned off when the door is vertically opened and rotated, there is no fear of radio wave leakage when the door is opened vertically. Further, according to the microwave oven of claim 6, the foreign matter contact detection means is provided at the lower end portion of the slide door, and the vertical movement operation of the slide door is stopped in response to the foreign matter contact detection. Your hands are pinched and there is no risk of injury. According to the microwave oven of claim 7, the heating chamber opening / closing door is not limited to the vertical slide opening / closing,
Since it can be opened vertically or horizontally, it can be used according to the storage location. According to the microwave oven of the eighth aspect, the waiting state can be set in advance according to the purpose of use of the door according to the user's wish.

[Brief description of drawings]

FIG. 1 is an external perspective view of a microwave oven according to a first embodiment of the present invention.

2 (a) and 2 (b) are side views of essential parts showing states of the sliding door of the microwave oven shown in FIG.

3 (a) and 3 (b) are side views of essential parts showing states of a sliding door of a microwave oven according to a second embodiment of the present invention when the sliding door is descending and when ascending.

4 is an external perspective view of the slide door shown in FIG. 3 viewed from the back side.

5 (a) and 5 (b) are side views of essential parts showing states of a sliding door of a microwave oven according to a third embodiment of the present invention when the sliding door is descending and when ascending.

FIG. 6 is a front view showing the structure of the microwave oven shown in FIG.

7 (a) and 7 (b) are perspective views of a main part showing a vertically opening structure for vertically sliding and opening / closing a heating chamber opening / closing door of a microwave oven according to a fourth embodiment of the present invention.

8 is a partial cross-sectional perspective view showing a lower structure of the sliding door of the microwave oven shown in FIG.

9 is a partial cross-sectional perspective view showing the upper structure of the slide door of the microwave oven shown in FIG.

10 is a perspective view showing an example of an operating method of a heating chamber entrance opening / closing door of the microwave oven shown in FIG. 7. FIG.

FIG. 11 is a partial cross-sectional structure diagram showing a lower structure of a slide door of a microwave oven according to a fifth embodiment of the present invention.

12 is an operation power supply circuit diagram showing the relationship between the drive motor of the slide door shown in FIG. 11 and the heating chamber high frequency power supply.

FIG. 13 is an external perspective view showing a vertical sliding structure of a slide door according to a sixth embodiment of the present invention.

FIG. 14 is an enlarged detailed view of an A part of FIG.

15 (a), (b) and (c) are perspective views showing various aspects of an outer frame used for a sliding door of a microwave oven according to a seventh embodiment of the present invention.

16 (a), (b) and (c) are an outer frame, a vertical sliding / vertical opening door and a vertical sliding / horizontal opening used for a sliding door of a microwave oven according to a seventh embodiment of the present invention. It is a front side perspective view which shows the structure of a door.

FIG. 17 is a waiting position setting circuit diagram of a microwave oven according to an eighth embodiment of the present invention.

18 (a), (b) and (c) are external perspective views showing a structure of an operation state and a waiting position setting button of a microwave oven according to an eighth embodiment of the present invention.

FIG. 19 is an external perspective view showing the configuration of a conventional microwave oven.

20 is a side view showing a configuration centered on the front surface of the main body of the microwave oven in FIG. 19, and FIGS. 20 (a) to 20 (c) show respective steps of moving the slide door.

21 is a top view showing a configuration centering on the front surface of the main body of the microwave oven in FIG. 19. FIG.

[Explanation of symbols]

1 Microwave oven main body 3 Guide rail 4 Sliding doors 5, 5a, 5b Pulley for mounting a hanging wire (induction) wire 6 Hanging wire 7 Heating chamber 8, 8a, 8b Door slide hole on the side of the guide rail 8c Angle guide Guide hole 11 Roller (on the back side of slide door) 12 Roller drop recess 14 Latch hook (hook head shaft) 15 Hook switch 16 Suspension support point of slide door 18 Pin guide 55 Sliding door standby position setting circuit

Claims (8)

[Claims] 1. A heating chamber, a slide door that opens and closes an inlet of the heating chamber up and down, and a pair of left and right guide rails that sandwich the slide door so as to be vertically movable from left and right sides and have door slide holes on side surfaces. A microwave oven provided with a door guide that is connected to a hanging support point of the slide door and moves the slide door up and down along the door slide hole by driving a motor, wherein the guide rail has a side door slide hole. The lower part of the microwave oven is closely contacted with the opening of the heating chamber, and the upper part of the microwave oven is inclined so as to project to the front of the case of the main body of the heating chamber. 2. A heating chamber, a slide door that opens and closes an inlet of the heating chamber up and down, and a pair of left and right guide rails that sandwich the slide door so as to be vertically movable from left and right sides and have door slide holes on side surfaces. A door guide that is connected to a suspension support point of the slide door and moves the slide door up and down along the door slide hole by driving a motor, and a rolling element is provided on the back surface of the slide door. A microwave oven in which the slide door is movably arranged on the front surface of the microwave oven main body case. 3. The microwave oven according to claim 1, wherein a rolling member drop-in concave portion on the rear surface of the slide door is provided on a side surface of the heating chamber of the microwave oven main body case. 4. A heating chamber, a slide door that opens and closes the inlet of the heating chamber up and down, and the slide door is vertically movably clamped from both left and right sides,
Microwave oven equipped with a pair of left and right guide rails having door slide holes on the side surfaces, and a door guide that is connected to a suspension support point of the slide door and moves the slide door up and down along the door slide hole by a motor drive. In the lower side surface or the upper side surface of the slide door opposite to the suspension supporting point, the rod-shaped main body is stored inside the slide door, and the rod-shaped main body is stored inside the slide door, and the tapered tip end is provided by the spring means. An electronic device characterized by being provided with a pin guide that can be projected / retracted to the outside of the side surface of the sliding door, so that the sliding door can be opened / closed up / down and can be vertically opened and rotated about a hanging support point as a rotation axis. range. 5. A hook head shaft is projected at a hanging support point in a direction perpendicular to the slide door surface, and hook switch means is provided at the lower end level of the heating chamber inlet, and the hook head is opened or closed in accordance with the vertical opening and rotation of the slide door. The high frequency radio wave source in the heating chamber is turned on / off by contacting / separating the shaft and hook switch means.
5. The microwave oven according to claim 4, further comprising an electric circuit for F. 6. A foreign matter contact detecting means is provided at a lower end portion of the slide door, and a motor drive stopping means for shutting off a drive circuit of the slide door vertical movement drive motor according to the foreign matter contact detecting means detects the foreign matter contact. The microwave oven according to claim 1, claim 2, claim 3, or claim 4. 7. An outer frame which is formed so as to surround the outside of the heating chamber and accommodates the heating chamber therein, and a heating chamber inlet at one side of one of the left and right inner surfaces of the outer frame or one of the upper and lower end surfaces. A door rotation shaft is provided, and the tapered end is projected from the outer frame surface by elastic means on the opposite side.
A pin guide is provided so that it can be freely withdrawn, and the heating chamber inlet door is configured to be vertically openable and horizontally openable, and the guide rod extending vertically to the outer frame side face and the outer frame side face parallel to the guide rod. 2. A microwave oven, comprising: a threaded rod disposed on the drive shaft; and drive means for rotating the threaded rod to drive the outer frame up and down along the guide rod. 8. A vertical slide type microwave oven which opens and closes the entrance of the heating chamber up and down, and a heating chamber entrance door opening and closing waiting position setting means for setting the heating chamber entrance door when the heating chamber is not heated to the waiting position. A microwave oven characterized by being provided.