JP2886404B2 - microwave - Google Patents

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 a vertically slidable opening / closing door (hereinafter abbreviated as "slide door") at a heating chamber entrance.

[0002]

2. Description of the Related Art A conventional microwave oven has, for example, an overall structure as shown in FIG. 19, and the structure viewed from the side centering on the front surface 2 of a microwave oven body case 1 is shown in FIGS.
FIG. 21 (c) shows a configuration viewed from above centering on the front surface 2 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 between the left and right guide rails 3. And a microwave (shown by a in FIG. 20) guided by a suspension wire 6 mounted on a pulley 5a and a driven pulley 5b that are rotationally driven via a belt (shown by b in FIG. 20), and a microwave oven main body. The front of the case 1 is moved up and down to open and close the entrance 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 extends 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 projecting sideways are fixed.
b is loosely fitted in the door slide hole 8, and the hanging wire 6 is fixed to the tip of the upper pin body 4a. Therefore, the slide door 4 guided by the suspension wire 6 can move up and down along the door slide hole 8 described above. In FIG. 20, the guide rail 3 is omitted in (a) and (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 be separated from the front face 2 of the microwave oven body case 1 when moving up and down the front surface 2 of the microwave oven body case 1. 3 is a sliding door 4
Has a portion 3a that wraps around the front surface and covers the left and right portions. Further, 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 high-frequency (for example, microwave) to the food to cook. I do. At this time, if there is a gap between the front surface 2 and the slide door 4 and there is a gap, there is a possibility that high frequency leaks from the gap to make it cheap. Therefore, in order to prevent the high frequency leakage by bringing the front surface 2 and the slide door 4 into close contact with each other, 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. Let me.

[0004]

However, in the above-mentioned conventional microwave oven, since the door slide hole 8 of the door rail 3 extends vertically in parallel with the front surface 2 of the microwave oven main body case 1, the heating chamber 7 Depending on how the slide door that opens and closes the entrance is adjusted, when the slide door 4 is moved up and down, the motor and the guide are driven by friction between the slide door 4 and the front surface 2 of the microwave oven main body case 1 and the spacer 9 and the door rail 3. The life of the wire 6 may be shortened. Also, structurally, friction may occur in a large number of parts, and there is a possibility that bad points such as shortening of the life of the parts may occur.

[0005] Further, since the sliding door 4 for opening and closing the heating chamber entrance is vertically slidable, even if the inside of the heating chamber 7 of the microwave oven can be cleaned, it is difficult to clean the rear side of the door 4 and it is difficult to access. There were difficulties. Further, depending on the type of microwave oven, there is a structure in which the entire inside of the slide door cannot be cleaned. Also, in the configuration in which the door that opens and closes the heating chamber entrance is moved up and down along the front of the microwave oven main body case, even if a detection sensor is installed at the lower end of the door,
There was a risk that the door would suddenly drop if a person touched the detection sensor by mistake.

Therefore, according to the present invention, even if the sliding door moves up and down on the surface of the microwave oven main body case, the sliding door does not contact with the microwave oven main body case surface, the spacer, the door rail and the like to be consumed by friction, and the heating chamber is not heated. Internal cleaning,
An object of the present invention is to provide a microwave oven having a door structure in which the back 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 of a hand being pinched during the vertical movement of a slide door. Further, the present invention provides a door that can open and close the heating chamber entrance door only in the vertical movement direction of the sliding door, can open vertically and horizontally, and can open and close the door even if the microwave storage space space is limited. An object of the present invention is to provide a microwave oven having a structure.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, according to the present invention, a heating chamber, a sliding door for opening and closing a heating chamber entrance up and down, and a sliding door for vertically opening and closing the heating chamber from left and right sides are provided. A pair of left and right guide rails, which are movably sandwiched and provided with a door slide hole on a side surface, are connected to a hanging support point of the slide door, and the slide door is moved up and down along the door slide hole by driving a motor. In the microwave oven provided with a door derivative, the guide rail has a side door sliding hole whose lower part is in close contact with the heating chamber inlet opening, and whose upper part protrudes from the front of the microwave oven body case more than the heating chamber inlet opening. It is characterized by using a material which is formed so as to be inclined.

According to a second aspect of the present invention, there is provided a heating chamber, a sliding door for opening and closing the entrance of the heating chamber up and down, and a sliding door for vertically moving the sliding door from both left and right sides and providing a door sliding hole on the side. A microwave oven comprising: a pair of guide rails; and a door derivative connected to a hanging support point of the slide door and moving the slide door up and down along the door slide hole by driving a motor. , And the sliding door is movably disposed on the front surface of the microwave oven main body case. According to the third aspect, the rolling element 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 so that the entrance of the heating chamber is in close contact with the slide door surface.

According to a fourth aspect of the present invention, the heating chamber, a sliding door for opening and closing the heating chamber entrance up and down, a pair of left and right sliding doors sandwiching the sliding door up and down from both left and right sides and providing a door sliding hole on the side. In the microwave oven provided with a door rail that is connected to the suspension support point of the slide door and moves the slide door up and down along the door slide hole by driving a motor, On the lower side or upper side of the slide door, the rod-shaped main body is housed inside the slide door, and the rod-shaped main body is housed inside the slide door, and the tapered tip can be projected and retracted out of the slide door side by spring means. A pin guide is provided so that the sliding door can be freely opened and closed up and down, and can also be vertically opened and rotated about the hanging support point as a rotation axis. Than it is.

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

According to a seventh aspect of the present invention, an outer frame which is formed so as to surround the outside of the heating chamber and houses the heating chamber therein, and one of the left and right inner surfaces or one of the upper and lower end surfaces of the outer frame. A heating chamber entrance door rotating shaft is provided, and a pin guide is provided on the opposite side so that the tapered end can protrude and retreat from the outer frame surface by elastic means, and the heating chamber entrance door is rotated by the support of the rotating shaft. A guide rod that is configured to move freely and extends vertically on the side of the outer frame, a threaded rod disposed on the side of the outer frame in parallel with the guide rod, and the outer frame is turned into a guide rod by rotating the threaded rod. And a driving means for driving up and down along the driving means.

According to the present invention, a waiting position setting button for inputting an opening / closing waiting position of the heating chamber entrance door is provided in a vertical slide type microwave oven which opens and closes the entrance door of the heating chamber up and down by driving a motor. A switch for detecting that the entrance door is in the open state or the closed state, and an entrance door opening / closing wait state for terminating the entrance door based on the detection of the detection switch at an opening / closing standby position set by inputting a setting button. Initial position control means is provided.

[0014]

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

According to the microwave oven of the present invention,
A rolling element is provided on the back of the sliding door that opens and closes the entrance of the heating chamber up and down, and is movably arranged on the front of the microwave oven case, so the sliding door and the microwave oven case that move up and down the front of the microwave oven case The friction generated on the surface is low. According to the third aspect of the present invention, since the rolling elements fit into the recesses of the rolling elements on the rear surface of the sliding door on the side surfaces of the heating chamber, the rear surfaces of the sliding door and the heating chamber surface are in close contact with each other. In addition, high-frequency radio wave leakage from the heating chamber is more reliably eliminated. Further, according to the configuration of the fourth aspect, not only the opening and closing of the slide door by the vertical movement but also the vertical opening rotation with the hanging support point as the rotation axis becomes possible.

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

Further, according to the microwave oven of the present invention, the foreign object contact detection means is provided at the lower end of the slide door, and the driving of the slide door vertical movement drive motor is stopped in response to the foreign object contact detection. Do not get your hands caught in the door. Further, according to the microwave oven of claim 7, not only the vertical sliding door can be opened and closed vertically, but also the vertical opening rotating shaft or the left and right side surfaces provided on any one of the upper and lower end surfaces in the outer frame. A laterally-opening rotation shaft is provided on any one side surface, so that it can be vertically opened and horizontally opened as well as vertically opened and closed. According to the microwave oven of the eighth aspect, it is possible to preset the door waiting position when the cooked food is not heated on the slide door.

[0018]

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

As shown in FIGS. 2 (a) and 2 (b), the left and right guide rails 3 protrude forward of the front surface 2 of the microwave oven main body case 1 at the upper part, and are positioned at the lower heating chamber 7 at the upper part. In this example, a door slide hole 8a formed so as to be inclined and run at a close position close to the heating chamber entrance is provided. The slide hole 8a is, for example, an elongated hole that is substantially along a straight line, and the center line of the elongated hole has an angle that opens upward with respect to the plane of the front surface 2 of the main body case 1. Have been. In this slide hole 8a,
The pin bodies 4a and 4b are loosely fitted. A suspending wire 6 is mounted between the upper pulley 5a and the lower pulley 5b, and the suspending wire 6 is connected to the pin body 4a at the suspending support point on the upper side of the slide door 4, The slide door 4 is moved up and down along the door slide hole 8a in accordance with the rotational drive of the pulley 5a.
In the microwave oven of the present embodiment, the slide door 4 at the entrance position of the heating chamber 7 is located close to the entrance of the heating chamber, so that the radio wave does not leak from the heating chamber.

Embodiment 2 FIGS. 3 (a) and 3 (b) are enlarged side views of an essential part for showing an operation state of a vertically sliding door of a microwave oven according to a second embodiment of the present invention. FIG. 4 is an enlarged perspective view of the back side for illustrating the structure of the slide door 4 of the microwave oven according to the present embodiment. FIG. 1 shows a microwave oven according to this embodiment.
As in the case of the microwave oven shown in FIG. 1, slide doors 4 for opening and closing the heating chamber 7 are provided on both left and right sides of the heating chamber 7 of the microwave oven main body case 1. A pair of left and right sliding doors 4 are sandwiched from both right and left sides. Guide rail 3 is provided. Further, pulleys 5a and 5b are provided at the upper part of the microwave oven main body case 1 and the lower part of the heating chamber 7, and a belt b rotated by a motor a is mounted thereon, and is mounted between the left and right pulleys 5a and 5b. The slide door 4 is moved up and down by a suspended hanging wire 6 to open and close an inlet of the heating chamber 7 up and down.

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

Embodiment 3 FIGS. 5 (a) and 5 (b) are enlarged side views showing the operation of a microwave oven according to a third embodiment of the present invention. FIG. FIG. 2 is a front view showing the configuration (however, a guide rail and a slide door are removed). The microwave oven according to the present embodiment has four rollers 11, 11, 11, 11 provided on the back surface of the slide door 4 on the right and left sides of the opening of the heating chamber 7 of the microwave case body 1, respectively, for dropping. Are provided, and the door slide holes 8b are formed in accordance with the recesses. Except for this, the configuration is the same as that of the microwave oven shown in FIGS. Therefore, as described above, since the roller 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, it falls into the roller recess. The sliding door and the surface of the microwave oven body case come into close contact with each other, so that radio wave leakage does not occur. When the slide door is lifted from the roller recessed concave portion 12 of the microwave oven body case surface, the microwave oven body case surface can be smoothly moved again.

Embodiment 4 FIGS. 7 (a) and 7 (b) show a vertical operation state and a vertical opening state of a slide door of a microwave oven according to a fourth embodiment of the present invention, and a main part structural diagram. 8 is an enlarged side view of a main part showing the structure of the slide door 4, and FIG. 9 is a partially sectional perspective view showing the upper structure of the slide door. In the sliding door operating structure of the microwave oven according to the present embodiment, a hanging wire 6 is mounted on an upper pulley 5a and a lower pulley 5b on the front portion of a microwave oven main body (not shown) as shown in FIG. The sliding door 4 is the hanging support point 1 at the lower side
6 is supported by a ring 13 so as to be vertically movable. As shown in FIG. 8, the hanging support point 16 is provided with a latch hook 14 extending in the 90-degree direction with the door 4 surface, and the guide rail 3 is erected at an angle in a direction perpendicular thereto. And an angle plate 3b in which a guide hole 8c of the latch hook 14 is formed. As shown in FIG. 8, the angle plate 3b moves the latch hook 1 in accordance with the vertical rotation of the latch hook (hook shaft) 14 described above.
A latch switch 15 with which the door 4 comes in contact with / separates from the hanging support point 16 of the door 4 is disposed behind the level position L.
A stopper 14a protrudes from the latch hook 14 toward the slide door 4 side.
4a is the angle plate 3 when the latch hook 14 is rotated.
b The rotation of the latch hook 14 is stopped at a fixed angle by contacting the rear surface.

The above-mentioned hanging support point level position L matches the lower end of the hook shaft guide hole 8c of the angle plate 3b,
The latch hook 14 is set so as to coincide with the position where it is stopped at the lower end of the hook shaft guide hole 8c. When the latch hook 14 comes into contact with the latch switch 15, connection of the drive circuit to the heating chamber radio wave source is allowed. 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 tapered tip end on both left and right sides.
It is urged to protrude and retreat to the side of. Therefore, when the slide door 4 is pulled toward the user, the slide door 4 pivots in the vertical direction about the suspension support point 16 and opens vertically. In this vertical opening, the latch hook 14 is separated from the hook switch 15, the 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
0, a foot switch 21 (or a hand switch) may be provided.
Step 1 causes the vertical slide drive motor 17 (FIG. 7A,
(See (b)), the door 14 moves upward, and the heating chamber entrance opens. When the switch 21 is depressed once more, the motor 17 rotates in the reverse direction, and the door 4 moves downward.

Fifth Embodiment FIG. 11 is an enlarged detailed view showing a main structure of a door provided with a sliding door stopping device in a sliding 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 substance contact detection section 23 at the lower end portion inside the door 14 as shown in FIG. 11. The foreign substance contact detection section 23 is provided inside a tubular body 33 provided on the side surface of the slide door 4. , A sensing plate 25 provided at the lower end of the sliding door 4, and a projection 27 at the center of the sensing plate 25.
The L-shaped lever 29 is configured to press the rod 31 forward with the support point O as the center of rotation and to be able to retreat freely. In addition, springs 26, 26 are provided on the upper surface of the sensing plate 25 to elastically maintain the fixed plates 32, 32 at fixed positions.

Further, the tubular body 33 is supported by a suspending ring 15 attached to the suspending wire 6.
Are slidably held up and down by pulleys (not shown). The rod-shaped body 31 of the foreign object contact detection unit 23 is provided with a stop switch 35 (the motor control circuit 17 of the drive motor 17).
a (controls ON / OFF of the connection of FIG. 12) to the operation plate 36 so as to protrude and retreat. As shown in FIG. 12, the output signal of the stop switch 35 of the foreign object contact detection unit 23 is controlled by the control circuit 35a.
Is input to The control circuit 35a controls the motor control circuit 17a according to ON / OFF of the output signal of the stop switch 35.
Is turned ON / OFF. Also, for example, the control circuit 35a
, The oscillation circuit 46 of the high-frequency oscillation source is turned on / off by the latch switches 15 and 15a. in this case,
The oscillation circuit 46 is turned on in accordance with the output of the stop switch 35
・ It can be turned off. 45 is a power supply. In the microwave oven according to the present embodiment, the slide door 4 has the above-described configuration. Therefore, when a foreign object (for example, a human hand) touches the lower surface of the door while the door 4 is moving up and down, the rod 31 is operated. The operation plate 36 is pushed out in the direction of the plate 36, and as a result, the operation plate 36 contacts the stop switch 35 as a result of pressing the operation plate 36. For this reason, the control circuit 35a and the motor control circuit 17a shown in FIG. 12 operate to stop the driving of the drive motor 17, and the downward movement of the slide door 4 is stopped. Is gone. It goes without saying that the apparatus of this embodiment can be applied not only to the above-described vertical slide type but also to all of the slide doors described in Embodiments 1, 2, 3 and 4.

Embodiment 6 FIG. 13 is a perspective view of a main part of an up-down 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.
It is a part enlarged view. In the outer frame 37 of this embodiment, a fixing bracket 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 is provided with a hole for passing a fixing rod and a threaded rod. That is, as shown in FIG. 14, a threaded rod 40 extends vertically in the right hole in FIG. 14 through this hole, and a fixed rod 39 extends in parallel with the threaded rod 40 in the left hole. ing. Further, a bevel gear 41 is provided on the top of the left and right threaded rods 40, and the rotational force of the motor 17 is transmitted through a gear 43 attached to a bar 42 extending in the horizontal direction. The transmission is performed to the threaded rod 40 via the bevel gears 44 and 43 and the bevel gear 41.

FIGS. 15 (a), (b), and
The type shown in (c) is conceivable, selected according to the shape of the microwave oven, and the opening / closing door is attached to the outer frame. A fixing 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 the lower side walls of the outer frame 37 are provided.
The lower turning point of the door 4 is mounted on the upper side wall, and the pin guides 18, 18 of the sliding door 4 (only the right side wall is shown in FIG. 16) are provided on both side walls of the upper side. If the outer frame 37 of the present embodiment is used so as to be vertically opened and turned so as to be attached to and detached from the door, a vertically openable door-structured microwave oven that can be used as a vertical slide type 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 formed by the upper and lower inner wall surfaces of the outer frame. By mounting in the supporting point receiving hole of (1), a microwave oven having a horizontally-opening door that can be used both vertically and slidably can be configured.

Embodiment 7 The sliding door for opening and closing the heating chamber of the microwave oven according to the present embodiment is, as disclosed in the above-described embodiment 4 (FIGS. 7 to 9),
It is configured to be vertically slidable and vertically openable, and has a configuration in which a latch switch is arranged at a hanging support point level position on the side surface of the slide door. Further, the connection of the high-frequency heating source in the heating chamber is turned on / off in accordance with the ON / OFF of the latch switch in accordance with the vertical opening / closing of the slide door, so that heating and non-heating operations are performed. In addition, the opening / closing motor 17 of the sliding 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 shown in FIG.
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 entire operation of the microwave oven, 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 tone color change control circuit.

As shown in FIG. 18, when the microwave oven having the structure of the present embodiment is pressed by pressing "close" in FIG. 18C on the waiting position setting button 54 provided at the lower front of the microwave oven.
As shown in the circuit diagram of FIG.
The lower detection switch 49 waits in the "closed" state. When the waiting position is set in the "open" state, the waiting position setting button 54 is pressed "open" as shown in FIG.
Then, the “open” state is set to the control circuit 47 in the circuit diagram of FIG.
And the upper detection switch 48 (48 in FIG. 13)
, And waits for the slide door in the "open" state of the upper position. When the heating of the food for cooking is completed, the door is opened. In the microwave oven according to the present embodiment, the optimum heating state of the food is detected by the food heating sensor 52, 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 a speaker 50 notifies the user of the end of the heating, and a sound indicating the end of the heating and an electric signal for opening the door are sent to the door opening / closing motor 17 to rotate the motor. Raises the door and opens 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.
By changing the tone of the notification sound at the end of heating and the tone of the notification sound that the door is rising (moving), the operating state of the appliance is notified to the cook through the speaker 50. According to the microwave oven of the present embodiment, in the conventional microwave oven, the state where the door is closed is the normal state (that is, the waiting state), and when cooking by heating, the cook opens the door (a). → (b) Close the door → (c) Put the food into the refrigerator → (d) Press the heating button → (e) Open the door → (f) Remove the food from the refrigerator → (g) close the door Had to perform a series of operations, but according to the user's request, the waiting state of the prepared food door was set in advance, and when the waiting state was reached, the microwave was automatically turned on. Since it is ready for the next state, it can be used very efficiently.

[0033]

As is apparent from the above description, according to the microwave oven of the first aspect of the present invention, radio waves do not leak from the opening of the heating chamber entrance despite the simple structure of the apparatus. According to the second aspect of the present invention, the friction between the sliding door and the case surface of the microwave oven main body is small, so that the life of the apparatus is extended. According to the third aspect of the present invention, the friction between the microwave oven body case surface and the sliding door is small, the life of the apparatus is extended, and there is no radio wave leakage from the heating chamber. Further, according to the microwave oven of the present invention, since the opening / closing door is used for both vertical sliding and vertical opening rotation, it can be used in accordance with the space space of the microwave oven storage space and the stored food. According to the microwave oven of the fifth aspect, as in the microwave oven of the fourth aspect,
The heating chamber opening / closing door is provided so as to be able to be vertically opened for both vertical and sliding purposes. Further, when the door is pivoted vertically, the connection circuit of the heating chamber high-frequency radio wave source is turned off. According to the microwave oven of the sixth aspect, since the foreign object contact detection means is provided at the lower end of the slide door and the vertical movement of the slide door is stopped in response to the foreign object contact detection, There is no risk of being caught and hurt. According to the microwave oven of the seventh aspect, the heating chamber opening / closing door is not only opened and closed by sliding vertically,
Since the vertical opening and the horizontal opening and closing are also used, it can be used according to the storage location. Further, according to the microwave oven of the present invention, the waiting state can be set in advance according to the user's request, according to the purpose of use of the door.

[Brief description of the drawings]

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

FIGS. 2 (a) and 2 (b) are side views of main parts showing a state where the slide door of the microwave oven shown in FIG. 1 is lowered and raised.

FIGS. 3 (a) and 3 (b) are main part side views showing a state in which a slide door of a microwave oven is lowered and ascended according to a second embodiment of the present invention.

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

FIGS. 5 (a) and 5 (b) are main part side views showing a state in which a sliding door of a microwave oven is lowered and raised according to a third embodiment of the present invention.

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

FIGS. 7 (a) and 7 (b) are perspective views of a main part showing a vertical opening structure of a heating chamber opening / closing door of a microwave oven which can be slid up and down according to a fourth embodiment of the present invention.

FIG. 8 is a partial cross-sectional perspective view showing the lower part structure of the slide door of the microwave oven shown in FIG. 7;

9 is a partial cross-sectional perspective view showing an upper structure of the slide door of the microwave oven shown in FIG. 8;

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

FIG. 11 is a partial cross-sectional structural view 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 a relationship between a drive motor of the slide door shown in FIG. 11 and a high frequency power supply of a heating chamber.

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

FIG. 14 is an enlarged detailed view of a portion A in FIG. 13;

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

FIGS. 16 (a), (b), and (c) are an outer frame, a vertical sliding / vertical opening door, and a vertical sliding / horizontal opening, respectively, 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 showing the structure of a door.

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

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

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

20 is a side view showing a configuration centering on a front surface of the main body of the microwave oven of FIG. 19, and (a) to (c) of FIG. 19 show each process of moving the slide door.

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

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Microwave oven main body 3 Guide rail 4 Slide door 5, 5a, 5b Pulley for mounting a suspension wire (induction) wire 6 Suspension wire 7 Heating chamber 8, 8a, 8b Door slide hole on guide rail side 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 Hanging support point of slide door 18 Pin guide 55 Waiting position setting circuit for slide door

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F24C 7/02 521 F24C 15/02

Claims (8)

(57) [Claims] 1. A heating chamber, a sliding door for opening and closing a heating chamber entrance up and down, a pair of left and right guide rails which sandwich the sliding door movably up and down from both left and right sides, and have a door sliding hole on a side surface, A door derivative connected to a hanging support point of the sliding door and moving the sliding door up and down along the door sliding hole by driving a motor, wherein the guide rail is a side door sliding hole. A microwave oven characterized in that a lower portion of the microwave oven is in close contact with the opening of the heating chamber inlet, and an upper portion of the microwave oven is inclined so as to protrude more toward the front surface of the microwave oven body case than the heating chamber opening entrance. 2. A heating chamber, a slide door for opening and closing the entrance of the heating chamber up and down, and a pair of left and right guide rails which sandwich the slide door movably up and down from both left and right sides and have a door slide hole on the side. A door derivative connected to a hanging support point of the slide door and moving the slide door up and down along the door slide hole by driving a motor, wherein a rolling element is provided on the back surface of the slide door. A microwave oven, wherein the slide door is movably arranged on the front surface of the microwave oven body case. 3. The microwave oven according to claim 1, wherein a rolling element drop recess on the back surface of the slide door is provided on a side surface of the heating chamber of the microwave oven body case. 4. A heating chamber, a slide door for opening and closing the heating chamber entrance up and down, and holding the slide door up and down from both left and right sides,
A microwave oven having a pair of left and right guide rails provided with a door slide hole on a side surface, and a door derivative connected to a hanging support point of the slide door and moving the slide door up and down along the door slide hole by driving a motor. In the lower side or upper side of the slide door opposite to the hanging support point, the rod-shaped main body is housed inside the slide door, and the rod-shaped main body is housed in the slide door, and the tapered tip is spring-loaded. The electronic device is provided with a pin guide which can be protruded and retracted to the outside of the side of the sliding door, and which is not only capable of opening and closing the sliding door up and down, but also vertically rotatable 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 a slide door surface, and a hook switch means is provided at a lower end level of a heating chamber entrance, and a hook head is provided in accordance with a vertical opening rotation of the slide door. Turns on / off the heating chamber high-frequency radio source by contact / separation between the shaft and hook switch means
5. The microwave oven according to claim 4, further comprising an electric circuit for performing F. 6. A sliding door having a foreign matter contact detecting means provided at a lower end thereof and a motor drive stopping means for shutting off a drive circuit of a sliding door vertical movement driving motor in response to foreign matter contact detection of the foreign matter contact detecting means. The microwave oven according to any one of claims 1, 2, 3, or 4, wherein 7. An outer frame formed so as to surround the outside of the heating chamber and containing the heating chamber therein, and a heating chamber inlet at one end of one of left and right inner surfaces or one of upper and lower end surfaces of the outer frame. A door rotation shaft is provided, and a tapered end is projected from the outer frame surface on the opposite side by elastic means.
Exit freely provided pin guide, said turn the heating chamber inlet door
A guide rod extending vertically on the side surface of the outer frame, a threaded bar arranged on the side surface of the outer frame in parallel with the guide rod, and a rotatable structure formed by supporting the moving shaft. A microwave oven comprising: driving means for driving the outer frame to move up and down along the guide rod. 8. A waiting position for inputting an opening / closing waiting position of the heating chamber entrance door in a vertical slide type microwave oven that opens and closes the entrance door of the heating chamber up and down by driving a motor.
Button and a switch to detect when the entrance door is open or closed.
Switch and the opening / closing waiting position set by the input operation of the setting button
The entrance door is put on standby based on the detection of the detection switch.
A microwave oven provided with an entrance door opening / closing waiting position control means for causing the door to open and close.