JPH0678704U - Door for high frequency heating device - Google Patents

Abstract

(57) [Abstract] [Purpose] To improve the operability when a plurality of operation buttons that are frequently operated are provided on the front panel of the door. [Structure] A body-side heating chamber is provided so as to be vertically openable and closable from an opening on the front side to an operation panel portion adjacent to the opening, and from the opening to the vicinity of both left and right ends reaching the operation panel. In a door for a high-frequency heating device, which has a wide window portion continuously opened, and in which a plurality of operation buttons are provided on the front panel surface of the lower portion of the window portion,
The front surface of the door body is bulged toward the front side in a substantially arc shape, and the front panel surface of the lower part of the window part is gradually widened in the front-rear direction from both end sides to the central part. The operability is improved by installing the plurality of operation buttons on the tapered surface portion on the surface.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a door for a high frequency heating device.

[0002]

[Prior art]

 In recent high-frequency heating devices such as microwave ovens, for example, the door for opening and closing the heating chamber opening of the main body of the high-frequency heating device has a large size covering the entire opening from the heating chamber opening to the side operation panel. While forming a wide window part that is horizontally long in a wide range from the opening of the heating chamber to the operation panel, a plurality of frequently used operation switches are provided in the lower part of the door. A structure is being considered in which the operation switch group is electrically connected to the control unit on the operation panel of the main unit with a flexible harness.

When such a configuration is adopted, the front surface of the main body of the high-frequency heating device is formed of a single door to provide a neat design, and the wide window portion makes it easy to look into the heating chamber. Also, the wide space of the door can be effectively used to provide a large number of operation buttons for the operation switches, which are frequently used, and the visibility and operability can be improved.

[0004]

[Problems to be solved by the device]

 However, when the operation buttons are provided on the front surface of the door as described above, how the size, arrangement structure, installation angle, etc. are set in order to improve the visibility, operability, and erroneous operation prevention. There is a problem that the structure must be decided from a comprehensive viewpoint, including the operation mode during various cooking and the relation with the installation place of the equipment itself.

[0005]

[Means for Solving the Problems]

 The invention described in each of claims 1 to 3 of the present application was made for the purpose of solving the above problems, and is configured as follows.

(1) Configuration of the Invention According to Claim 1 The door for a high-frequency heating device according to claim 1 extends from the front side opening of the main body side heating chamber to the operation panel section adjacent to the opening. For high-frequency heating devices that have a wide window part that is openable and closable and that opens continuously to the left and right ends, and that has a plurality of operation buttons on the front panel surface under the window part. In this door, the front surface of the door is bulged toward the front side in a substantially arcuate shape, and the front side panel surface of the lower part of the above-mentioned window is directed forward and backward as it goes from both ends to the center part. The taper surface is formed to have a wide width, and the plurality of operation buttons are provided on the taper surface portion.

(2) Structure of the invention according to claim 2 In the door for a high-frequency heating device according to claim 2, the plurality of operation buttons in the structure according to claim 1 have a large diameter. And a small-diameter operation button, and a large-diameter operation button is arranged near the center of the tapered surface in the left-right direction.

(3) Configuration of the invention according to claim 3 The door for a high-frequency heating device according to the invention as defined in claim 3 is characterized in that the door in the configuration as claimed in claim 1 or 2 has a center portion in the left-right direction. Has a handle portion for opening and closing, and a ventilation port opening upward is formed at the back portion of the handle portion.

[0009]

[Action]

 (1) Operation of the invention of claim 1 As described above, in the door for the high-frequency heating device of the invention of claim 1, the front part of the door body is bulged forward in a substantially arc shape, and The panel surface of the lower part of the window extending in the left-right direction is formed into a tapered surface that widens in the front-rear direction from the left and right ends to the central portion, and a plurality of operation buttons are installed on the tapered surface. ing.

Therefore, the plurality of operation buttons can be operated from the upper side to the rear of the slant at an operation angle that is very easy to operate, while the front portion of the door body is expanded to the front side as described above. Since it is exposed, the width in the front-rear direction of the tapered surface, which is the operation button installation portion, can be made sufficiently wide, and an operation button of sufficient size with high visibility can be arranged.

Further, as a result of installing the operation buttons on the taper surface portion in the front-rear direction of the lower part of the window as described above, for example, even when the front surface of the door hits the lower installation surface when the door is fully opened, the front side vertical Unlike the case where the operation button is provided on the surface, the operation button is not pressed and the durability of the operation button is improved.

(2) Operation of the invention according to claim 2 In the structure of the door for a high-frequency heating device according to claim 2, the plurality of operation buttons in the structure according to the invention according to claim 1 have a large diameter. It consists of two types of operation buttons, one with a small diameter and one with a large diameter, and the large diameter is arranged so as to be centered in the left-right direction of the tapered surface portion.

Therefore, since the operation frequency is relatively high, it is possible to divide the operation buttons provided on the door side into those with a higher operation frequency and those with a normal operation frequency. The buttons can be easily separated by the large and small buttons, which are extremely distinctive.

Since the large-diameter button is installed close to the wide part in the front-rear direction on the center part in the left-right direction of the tapered surface, there is no difficulty in its installation. . Also, the appearance balance is improved.

(3) Operation of the invention according to claim 3 In the structure of the door for a high-frequency heating device according to claim 3, the door in the configuration according to claim 1 or 2 has a center in the left-right direction. Since the opening and closing handle is provided at the upper part of the handle and the ventilation opening that opens upward is formed at the back of the handle, it is easy to open and close the door in the vertical direction and the door body The heated and heated air inside is discharged upward from the ventilation port by natural convection, and efficient ventilation cooling is achieved.

[0016]

[Effect of device]

 As a result, according to the high-frequency heating device door of the present invention, it is possible to realize a door having a face-touch type operation key structure that is extremely convenient to use, has a smooth operation feeling, and does not easily cause an erroneous operation. Like

[0017]

【Example】

 1 to 8 show the configuration of a high frequency heating apparatus with an oven function according to an embodiment of the present invention, which is provided with a plurality of operation buttons on the front surface of a door panel.

First, FIG. 1 shows the overall structure of the same high-frequency heating apparatus. In the figure, reference numeral 1 is a range body 1 of the high-frequency heating apparatus, and reference numeral 2 is inside the range body 1. It is a heating chamber (internal space) having a predetermined volume, which is formed and has the upper heater 3 on the ceiling. Then, for example, convex shelf receiving portions are provided in parallel on both side wall surfaces 2a and 2b of the heating chamber 2, and a predetermined cooking dish (not shown) is utilized from the front side by using the left and right shelf receiving portions. It is inserted in the rear side and supported vertically in parallel.

Further, a turntable 4 is rotatably provided at the bottom of the heating chamber 2.

Further, as shown in the drawing, a small space portion 5 for installing the magnetron 6 and other devices is formed in one side portion (right side portion in the drawing) 8 of the range main body 1. An operation panel section 40 is provided on the front surface of the small space section 5 as shown in FIG. 3, for example.

The operation panel section 40 includes, for example, from the upper side to the lower side, a display tube section 41 and three heating time setting keys for a manual menu (42 a for 5 minutes, 42 b for 1 minute, 42 c for 10 seconds). Key), manual heating key group (comprising 4 keys of raw thawing, toaster, piza heating, and porridge) 43, automatic heating key group (comprising 4 keys of sake can, toast, and rice) 44, a manual menu designating key 45, and an auto menu designating key 46 are appropriately arranged with good operability.

Then, in the display tube portion 41 of the operation panel portion 40 inside the door, for example, when the above-mentioned various operation keys are turned on, various selection setting states are displayed correspondingly. It has become.

The operation panel section 40 and the above-mentioned door key group are connected to a control unit for controlling a microwave oven mainly composed of, for example, a microcomputer via a data bus and a control bus to freely input / output signals. It can be sent and received.

On the other hand, reference numeral 10 is a door which is located between the left and right ends on the front surface side of the range main body 1 configured as described above, and which is openably and closably attached from the upper side to the lower side through a hinge. As shown in detail in, for example, FIGS. 2, 3, 5, 6, 7, and 8, the door 10 is made of synthetic resin and has a gentle cross-section in a substantially arcuate shape in the horizontal direction from the left and right ends to the center. And an outer (front side) panel (cover panel) 11 formed by bulging into the outer panel 11 and the inner panel of the outer panel 11. A metal inner panel (main body panel) 13 having an opening in the central portion which forms a predetermined closed cross-sectional space 12 and a microwave oven main body side (heating chamber 2 side) of the inner panel 13 for electromagnetic wave shielding The metal punching plate 14 is joined to the open surface of the cooker body 1 side. The punching plate 14 has a seal surface portion 14a which is in uniform surface contact with the peripheral edge 7 of the opening on the range main body 1 side, particularly at the peripheral edge portion.

Further, a peripheral edge portion of the inner panel 13 corresponding to the opening peripheral edge 7 of the range main body 1 is formed in a state where a concave groove portion 15 which is concave outward is continuously connected to the concave groove portion 15. The choke structure 16 for the electromagnetic shield of the opening is provided, and the choke structure 16 extends endlessly throughout. A door switch 17 for detecting the open / closed state of the door 10 is attached to the upper portion of the groove 15 with a notch cover.

Further, reference numeral 19 is formed by denting a part of the upper panel portion of the outer panel 11 inward (toward the heating chamber 2) and integrally forming an engaging edge portion 19a on the front surface side. This is a handle for opening and closing the door, and is formed in a recessed structure that is slightly raised to allow easy insertion when inserting a finger and obtain an appropriate engaging force after insertion.

Further, reference numeral 20 is a hinge portion which is connected between the lower end portion 10a of the door 10 and the lower end portion 1a of the range main body 1 side and which supports the door 10 so as to be vertically openable and closable.

The hinge portion 20 includes a first hinge lever 20a fixed to the inner panel 13 side and a second hinge lever 20b fixed to the range main body 1 side commonly in the hinge shaft portion 20c. The door 10 is supported and connected, thereby supporting the door 10 so that it can be opened and closed in the vertical direction as described above.

The door 10 is locked in a closed state by a lock lever 20d provided on the range main body 1 side corresponding to the hinge portion 20. The lock lever 20d is constantly urged in the lock direction by a lock spring 21, while the lock lever 20d is automatically released from the lock state by opening the door 10.

Further, the outer panel 11 of the door 10 is provided with an opening 23 for forming a window portion (a viewing window) and first to sixth operation button portions which are located above and below a substantially central portion thereof. Openings 25a to 25f are formed respectively. The opening 23 for forming the window portion is located at the central portion in the vertical direction, and is formed so as to extend in the left-right direction from the front-side opening portion of the heating chamber 2 to the operation panel portion 40. The transparent glass 24, which is a window plate, is fitted and fixed in the opening 23 along the opening surface of the opening 23, so that the display state of the inside of the heating chamber 2 and the display tube portion 41 can be seen. A sufficiently large window is formed with a sufficiently wide viewing area (see Fig. 3). The punching hole 14a of the punching plate is formed corresponding to the opening of the heating chamber 2.

As shown in FIG. 4, the transparent glass 24 is arranged on the rear surface side of the outer panel 11, and the lower end thereof is locked by hook-shaped locking edge portions 61, 62, 63 and the upper end. The position is regulated by the projecting edge portions 64 and 65, and further, the left and right ends are held by the long holding members 66 and 67 and fixed to the opening 23 as described above. The clasping members 66, 67 are formed to have an angled cross section, and are pressed against the rear surface side of the outer panel 11 with the left and right ends of the transparent glass 24 fitted in the inner corners thereof. The lower end thereof is inserted into and engaged with the bag-shaped engaging portions 68, 69 integrally formed on the back surface of the outer panel 11, while the upper end side is supported by the support stays 70, 71 integrally formed on the back surface. On the other hand, they are fastened and fixed by screws 72 and 73.

Therefore, in this configuration, since the final fixing of the transparent glass 24 is performed by fastening the clasping members 66 and 67 having a high degree of mechanical freedom, the outer panel 11 itself is temporarily deformed to some extent. Whatever the case, unlike in the case of clinging or fitting, it can be fixed in the state of absorbing it.

In addition, the transparent glass 24 is formed by forming a smoked surface 51 on the back side, except for the opening-corresponding surface 24A of the heating chamber 2 and the display tube 41-corresponding surface 24B.

Further, a taper surface 47 is formed in the lower part of the window portion so that the width in the front-rear direction becomes wider from the left and right ends to the central portion by utilizing the bulging structure. At 47, the openings 25a to 25f for installing the above-described first to sixth operation buttons are provided. In the openings 25a to 25f for installing the first to sixth operation buttons, the first to sixth operation buttons 31a to 31f which are frequently used on a daily basis are inserted from the back side as shown in FIGS. 3 to 7. A state in which the front side operation surface is slidably freely fitted and is projected forward by a predetermined length with the operation surface on the front side being slanted, and is biased forward by the elastic support pieces 26a to 26f as shown in FIG. It is held so that it can be moved back and forth.

As shown in FIGS. 6 and 7, each of the first to sixth operation buttons 31a to 31f is made of a spherical tubular resin member having a slightly protruded central portion, and the lower portion on the back side thereof is the above-mentioned portion. It is integrated with the elastic supporting pieces 26a to 26f. As shown in FIG. 4, the first to sixth elastic support pieces 26a to 26f are integrated with the first to third elastic support pieces 26a to 26c and the fourth to sixth elastic support pieces 26d to 26f, respectively. And is fastened and fixed to the support stays 83, 84 of the outer panel 11 by screws 81, 82.

The first to sixth operation buttons 31a to 31f are, for example, as shown in FIGS. 1 to 4, those in which the first to third operation buttons 31a to 31c have large diameters. The fourth to sixth operation buttons 31d to 31f are formed to have a small diameter, and the first to third operation buttons 31a to 31c are arranged so as to be centered in the left-right direction. The operation buttons 31a to 31c are, for example, from the central portion side to the end portion side, start (31a), defrost (31b), toast (31c), and the fourth to sixth operation buttons 31d to 31f. , Cancel (31d), finish (31e), and additional heating (31f) are set.

The first to sixth operation buttons 31 a to 31 f are integrally provided with push rods 27 a to 27 f projecting rearward on the back surface thereof and respectively correspond to the tact switch 39 of the switch box 36. is doing.

On the other hand, a circuit board 33 is attached inside the switch box 36 via a support stay 29, and is fastened and fixed by screws 30.

On the circuit board 33, the tact switch 39 which is turned on / off corresponding to the push rods 27a to 27f of the first to sixth operation buttons 31a to 31f and the tact switch 39 which is turned on. A light emitting diode (not shown) that lights up is provided.

Therefore, when the first to sixth operation buttons 31a to 31f are pressed from the front side to the rear side against the pressing biasing force of the elastic support pieces 26a to 26f, the push rods 27a to 27f are pressed. Turns on or off the tact switch 39 and turns on or off the light emitting diode.

On the other hand, at the upper part of the back of the handle portion 19 of the outer panel 11 of the door 10, a ventilation port for performing ventilation cooling in the closed cross-sectional space 12 between the outer panel 11 and the inner panel 13. 53 is provided with a grill structure so that natural convection due to a rise in air temperature is used for ventilation.

As described above, in the high-frequency heating apparatus door of this embodiment, the front surface of the door body is bulged forward in a substantially arcuate shape, and the panel at the lower part of the wind portion extending in the left-right direction is formed. The surface is formed as a taper surface that widens in the front-rear direction from the left and right ends to the central portion, and a plurality of operation buttons are provided on the tapered surface.

Therefore, the plurality of operation buttons can be operated from the upper side to the rear of the slant at an operation angle that is very easy to operate, while the front surface of the door body is expanded to the front side as described above. Since it is exposed, the width in the front-rear direction of the tapered surface, which is the operation button installation portion, can be made sufficiently wide, and an operation button of sufficient size with high visibility can be arranged.

Further, as a result of installing the operation buttons on the taper surface portion in the front-rear direction of the lower part of the window as described above, for example, even when the front surface of the door hits the lower installation surface when the door is fully opened, the front side vertical Unlike the case where the operation button is provided on the surface, the operation button is not pressed and the durability of the operation button is improved.

In addition, in the configuration of the door of the above-described embodiment, the plurality of operation buttons are two types of operation buttons, one having a large diameter and the other having a small diameter. It is arranged along the central portion.

Therefore, since the operation frequency is relatively high, it is possible to divide the operation buttons provided on the door side into those with a higher operation frequency and those with a normal operation frequency. The buttons can be easily separated by the large and small buttons, which are extremely distinctive.

Since the large-diameter button is installed close to the central portion of the tapered surface having a large width in the front-rear direction, there is no difficulty in installing the button. Also, the appearance balance is improved.

Further, since the door has a handle portion for opening and closing in the upper part of the center portion in the left-right direction and is formed with a ventilation opening that opens upward on the back portion of the handle portion, It is easy to open and close in the vertical direction, and the heated and heated air inside the door body is discharged from above through the ventilation holes by natural convection, thus achieving efficient ventilation and cooling.

As a result, according to the structure of the door for the high-frequency heating device of the present invention, a door having a face-touch type operation key structure that is extremely easy to use, has a smooth operation feeling, and is less likely to be misoperated. Can be realized.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing the entire structure of a high-frequency heating apparatus according to an embodiment of the present invention.

FIG. 2 is an enlarged exploded perspective view of a door portion of the device.

FIG. 3 is a front view of a door portion of the device.

FIG. 4 is a rear view of the door portion.

FIG. 5 is a vertical cross-sectional view of a first operation button installation section of the door section.

FIG. 6 is a vertical cross-sectional view of a second operation button installation section of the door section.

FIG. 7 is a vertical cross-sectional view of a fifth operation button installation section of the door section.

FIG. 8 is a cross-sectional view of the upper portion of the door section.

[Explanation of symbols]

1 is a range main body, 2 is a heating chamber, 3 is a heater, 10 is a door, 11 is an outer panel, 12 is a closed cross section space, 13 is an inner panel, 14 is a punching plate, 23 is an opening for forming a window portion, 24 Is transparent glass, 26a to 26f are first to sixth elastic support pieces, 31a to 31f are first to sixth operation buttons, 40 is an operation panel portion, 47 is a tapered surface, 53
Is a vent.

Claims (3)

[Scope of utility model registration request] 1. A wide window part which is openably and closably provided from a front side opening part of a main body side heating chamber to an operation panel part adjacent to the opening part and which is continuously opened to the vicinity of both left and right end parts. A door for a high-frequency heating device having a plurality of operation buttons on the front panel surface of the lower part of the window, the front surface of the door being bulged in a substantially arc shape toward the front side. The front panel surface of the lower part of the window portion is formed in a tapered surface that widens in the front-rear direction from both ends to the central portion, and the plurality of operation buttons are installed on the tapered surface portion. Door for high frequency heating device. 2. The plurality of operation buttons are composed of two types of operation buttons, one having a large diameter and the other having a small diameter, and the large diameter is disposed so as to be located in the center of the tapered surface portion in the left-right direction. The door for a high-frequency heating device according to claim 1, wherein 3. The door has a handle portion for opening and closing at an upper portion of a center portion in the left-right direction, and a ventilation port opening upward is formed at a back portion of the handle portion. Door for high frequency heating device according to 1 or 2