JPH0622810U - Door switch structure for high-frequency heating device - Google Patents

Abstract

(57) [Abstract] [Purpose] To improve the visibility and operability of the ON / OFF operation button provided by protruding a predetermined amount from the opening on the front side of the door. A door of a high-frequency heating device, which is provided at a front side opening of a main body side heating chamber so as to be openable and closable, and has a plurality of operation buttons provided on a front side panel surface having a window portion. The operation buttons are located below the window part of the front side panel and are arranged in the left-right direction with a gap larger than the finger width of the average person, while the width of the operation surface protruding from the front side panel surface is set as described above. By making it wider than the average person's finger width, it is easier to see and operate.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

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

[0002]

[Prior art]

 In a recent high-frequency heating device such as a microwave oven, for example, a frequently used operation switch is provided in a door portion that opens and closes an opening of a heating chamber of the main body of the high-frequency heating device, and the operation switch is flexible in a main body side control unit. A structure that is electrically connected with a harness is being considered.

If such a configuration is adopted, it is possible to effectively utilize the large space of the door portion and provide the operation button of the operation switch that is frequently used, and it is possible to improve the visibility and operability. Becomes

[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, it is important to improve the visibility and operability by determining the size and arrangement structure of the operation buttons. However, there is a problem that the structure must be determined from an ergonomic standpoint including those with physical disabilities.

[0005]

[Means for Solving the Problems]

 The present invention has been made for the purpose of solving the above-mentioned problems, and is provided on the front panel surface having a window portion that is openably and closably located at the front opening of the main body heating chamber. In the door of the high-frequency heating device provided with a plurality of operation buttons, the plurality of operation buttons are located below the window part of the front panel and are arranged in the left-right direction with a space larger than the finger width of the average person. The width of the operation surface that is disposed and projects from the front panel surface is formed to be larger than the finger width of the average person.

[0006]

[Action]

 As described above, in the switch structure for the door for the high-frequency heating device of the present invention, the plurality of operation buttons are located below the window portion of the front panel and are spaced apart from the width of the finger of the average person. The doors are arranged in the left-right direction, and the width of the operation surface projecting from the front panel surface of the door is larger than the width of the average person's finger.

Therefore, it is very easy to see each operation button, and it is easy to operate the operation buttons, for example, with the fingertips, and it is possible to easily perform the ON / OFF operation only with the palm or the tip of the elbow. Sometimes I don't touch the operation button next to me.

[0008] Therefore, it is possible to operate while holding a pot in both hands during cooking, and it is also convenient for persons with physical disabilities who have fingertip inconvenience.

[0009]

[Effect of device]

 As a result, according to the switch structure of the door for a high-frequency heating device of the present invention, it is possible to realize a face touch type operation key structure which is extremely convenient and has a smooth operation feeling.

[0010]

【Example】

 (1) First Embodiment FIGS. 1 to 4 show the configuration of a high frequency heating apparatus with an oven function according to a first embodiment of the present invention in which a door portion is provided with an operation switch.

First, FIG. 1 shows the overall structure of the 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. Further, convex shelves are arranged side by side on both wall surfaces 2a, 2b of the heating chamber 2, and a predetermined cooking dish (not shown) is utilized from the front side to the rear by using the left and right shelves. It is inserted in the side and supported vertically in parallel.

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

Further, a small space portion 5 for installing the magnetron 6 and other devices is formed on one side portion (right side portion in the drawing) 8 of the range main body 1 as shown in the figure.

On the other hand, reference numeral 10 is a door which is located at the front opening of the range main body 1 configured as described above and which is openably and closably provided from the upper side to the lower side through a hinge. The door 10 is, for example, as shown in detail in FIGS. 2 and 3, an outer (front side) panel (cover panel) 11 formed by bulging a synthetic resin into a gentle cross-section substantially V shape. And a metal inner side which is located inside the outer panel 11 and is coupled to the outer panel 11 so as to face each other, and which has a central portion which forms a predetermined closed cross-sectional space 12 therebetween. On the panel (main body panel) 13 and on the inner side of the inner panel 13, a metal punching plate 14 for electromagnetic wave shielding is provided on the range main body side (heating chamber 2 side) corresponding to the opening surface on the range main body 1 side. It is joined. In particular, the punching plate 14 has a seal surface portion 14a on its peripheral edge portion, which makes uniform surface contact with the peripheral edge portion 7 of the range main body 1 side opening.

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 in which a concave groove portion 15 concaved outward is continuously connected to the concave groove portion 15. The choke structure 16 for shielding the electromagnetic wave in the opening is formed and extends endlessly over the whole. Further, a door switch 17 for detecting the open / closed state of the door 30 is attached to the upper position of the groove 15 with a notch cover.

Further, reference numeral 19 is a handle portion for opening and closing the door, which is formed by denting a part of the upper panel portion of the outer panel 11 toward the inside (heating chamber 2 side) direction, and a finger is inserted therein. It has an inclined structure that slightly rises upward so that it can be easily inserted at the time of insertion and that an appropriate engaging force can be obtained after insertion, and has a locking edge portion 19a.

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

In the hinge portion 20, the first hinge lever 20a fixed to the inner panel 13 side and the second hinge lever 20b fixed to the range body 1 side are commonly used 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 unlocked by the opening operation of 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 fifth operation button portions which are located above and below a substantially central portion thereof. The openings 25a to 25e for use are formed respectively. The opening 23 for forming the window portion is located at least above the central portion, and is formed in a size large enough to allow the inside of the heating chamber 2 to be seen. A transparent synthetic resin plate 24, which is a window plate, is fitted and fixed in the opening 23 along the curved surface of the bulging surface, whereby a window portion having a size large enough to look into the heating chamber 2 is formed. It is formed with a wide viewing angle. Therefore, the punching hole portion 14a of the punching plate 14 is also limited to the width of the window portion and is formed only in the upper half portion. Further, as shown in FIG. 2, the first to fifth operation buttons 31a to 31e are freely slidably fitted from the back side into the openings 25a to 25e for installing the first to fifth operation buttons. The front side operation surface is projected forward by a predetermined length, and is elastically supported by the elastic support plate 26a so as to be movable forward and backward while being biased forward.

Each of the operation buttons 31a to 31e is made of a circular transparent resin member having a lens function with a central portion protruding as shown in the figure, and the engaging edge portion formed on the back side thereof is used to The elastic support plate 26a is engaged and fixed to the upper light-transmitting surface portion. The light-transmitting surface portion of the elastic support plate 26a has an uneven surface so that the transmitted light is evenly diffused to the operation buttons 31a to 31e side and goes out.

Each of the operation buttons 31a to 31e is formed to have a diameter D larger than an average human finger width W (normally 1.5 cm to 2 cm), as shown in FIG. 4, for example. In addition, the installation interval S between them is also set larger than the width W of the finger.

The elastic support plate 26 is fixed at its base side to the lower part of a box-shaped switch box 36 made of synthetic resin by fastening with a screw 34, and the above-mentioned operation is performed by the spring constant when it is bent. The buttons 31a to 31e are elastically supported in a state of being urged so as to project toward the front of the door, and a push rod 27 projecting rearward is integrally provided at the upper end of the rear surface portion thereof. The switch box 36 is installed with a sufficient heat insulation space between itself and the inner panel 13 by utilizing a wide space formed by bulging the outer panel 11 toward the front side. There is.

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.

A switch 39 which is turned on / off corresponding to the push rod 27 on the elastic support plate 26a side and a light emitting diode 32 which is turned on when the switch 39 is turned on are arranged on the circuit board 33. There is.

Therefore, when the operation buttons 31a to 31e are pressed from the front side to the rear side against the pressing biasing force of the elastic support plate 26a, the push rod 27 operates the operating member 39a of the switch 39. It is turned on or off to turn on or off the light emitting diode 32.

Further, reference numeral 40 is a heat shield cover which is formed in a hook shape and is provided so as to cover the entire upper surface side to the rear surface side of the switch box 36, and the heat shield cover 40 includes a support stay 42. It is attached as shown in the figure via the screws, and is fastened and fixed to the back side of the switch box 36 by screws 41.

As a result, the upper part of the switch box 36 below the opening 23 is covered from the window side so as not to be seen, and radiant heat from the punching plate 14 side acts on the switch box 36. The heat is shielded as much as possible so that there is no Therefore, according to this structure, the punching hole portion 14b of the punching plate 14 is formed only in the width corresponding to the opening portion 23 for forming the window portion, and an effective heat insulating structure can be realized. Will be like. As a result, the heat of the heater in the heating chamber 2 is effectively used, and the uneven heating due to the radiation loss on the door side as in the conventional case does not occur. Further, since the switch box 36 is provided in a position avoiding the choke structure portion 16, the thickness of the door 10 can be made as small as possible while adopting the above-mentioned bulging structure (unnecessarily thick. You don't have to.) In addition, as a result of the higher heat insulation effect as described above, the degree of freedom in design by making the entire front side including the window part of the door 10 and the opening for installing the operation button (key switch), which will be described later, from synthetic resin It is especially easy to realize the operational effects such as improvement of manufacturing efficiency, ease of processing, molding, and assembly.

Further, in the present embodiment, the outer panel 11 constituting the door 10 is bulged to the front of the door surface in a substantially V-shaped three-dimensional surface, and is the maximum bulged surface of the bulging portion. Located just below the window part, the operation surfaces of the operation buttons 31a to 31e are made spherical as described above, and the diameter is made sufficiently larger than the width of the operator's finger, and further, it is projected sufficiently, and the The buttons are also placed with a space wider than the width of the fingers for the matching buttons.For example, you can easily locate the position with the palm of your hand or just the tip of your elbow, and it is extremely easy to turn it on. It is configured so that it can be turned on / off.

That is, the front surface of the door 10 is a three-dimensional bulging surface having a dogleg-shaped cross section and bulging outward, which itself is very easy to fit in the palm and is the most You can easily check the setting position based on the high line in the lower part of the window even when you are groping. In addition, a plurality of operation buttons 31a, which are located directly below the window portion which is the highest bulging surface, have a sufficient spherical height outwardly and have a diameter larger than the finger width of an average person, and are projected and arranged. Since ~ 31e is installed horizontally with an appropriate gap larger than the width of the average person's finger, it is easy to see, and of course only for the handicapped person or the elbow tip with both hands holding the pot. The operation at is also extremely easy.

(2) Second Embodiment By the way, when the operation buttons 31a to 31e are formed to be larger than a predetermined diameter as described above as in the first embodiment, of course, they are pressed or returned in the openings 25a to 25e. There is also a problem that the amount of displacement at the time becomes large, the backlash is apt to occur at the fitting portion, and the operation at the time of ON / OFF operation (especially at the time of return) becomes unstable.

Therefore, in this embodiment, the problem is solved by adopting a switch structure as shown in FIGS. 5 and 6.

That is, in the outer panel 11 of the door 10 shown in FIGS. 5 and 6, as in the first embodiment, the opening 23 and the window for forming the window portion are located above and below the substantially central portion thereof. Openings 25a to 25e for installing the first to fifth operation buttons are formed respectively. A transparent synthetic resin plate 24 is fitted and fixed in the opening 23 for forming the window portion along the bulging shape, thereby forming a window portion having a wide viewing angle for looking into the heating chamber 2. Has been done. Further, as shown in FIG. 6, the first to fifth operation buttons 31a to 31e are freely slidable from the back side in the openings 25a to 25e for installing the first to fifth operation buttons. The front side operation surface (spherical surface portion) is fitted to the front side and is held so as to be movable back and forth in a state of being urged by the integral elastic support piece 26 in the front side protruding direction with the front side operating surface (spherical surface portion) protruding a predetermined length. .

Each of the operation buttons 31a to 31e is made of a cylindrical transparent synthetic resin member whose diameter is larger than the width of the average person's finger, as shown in the figure, and is formed on the rear side peripheral portion. The engaging edge portion is used to engage and fix to the front surface of the operation button body portion 38 having a lens function and made of a transparent synthetic resin molding on the upper side of the elastic supporting piece 26b.

The elastic support piece 26b that supports the operation button main body 38 is fixed at its base side to the lower part of the box-shaped switch box 36 made of a synthetic resin by being fastened with a screw 34. Due to the spring constant, the operation button body 38 is elastically supported while being urged forward. Further, a push rod 27 projecting rearward is integrally provided on the back surface of the operation button body 38.

A coil spring 37 having a trapezoidal cross section is fitted on the outer periphery of the push rod 27 as shown in the drawing, and the operation button body 38 is provided in a predetermined direction in the return direction with the switch box 36 side support plate 43. It is biased by the spring pressure.

Therefore, according to the switch structure of the door for the high-frequency heating device of the second embodiment of the present invention, in addition to the urging force in the return direction due to only the elastic support piece 26b, the above-mentioned operation buttons 31a to 31e are further added. Since a reliable repulsive urging force by the coil spring 37 acts, even if the diameters of the operation buttons 31a to 31e are considerably increased, they are surely returned to the original state after being pressed and all the operation buttons are projected. The amount is constant. Further, it becomes possible to perform a smooth pressing operation without causing rattling of the fitting portion.

Since the coil spring 37 need only be fitted from the back side to the push rod 27 of the operation button body 38, the assembling work is easy.

[Brief description of drawings]

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

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

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

FIG. 4 is an enlarged perspective view of an operation button portion provided on a door portion of the same device.

FIG. 5 is a sectional view showing a door structure of a high-frequency heating device according to a second embodiment of the present invention.

FIG. 6 is an enlarged cross-sectional view of an operation switch section of the door.

[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 sectional space, 13 is an inner panel, 14 is a punching plate, 23 is an opening for forming a window portion, 24 Is a transparent resin plate, 26a is an elastic support plate, 26b is an elastic support piece, 27 is a push rod, 31a to 31e are operation buttons, 36 is a switch box, 37 is a coil spring, 38 is an operation button main body, 43
Is a support plate.

Claims (1)

[Scope of utility model registration request] 1. A door of a high-frequency heating device, which is provided at a front side opening of a main body side heating chamber so as to be openable and closable, and has a plurality of operation buttons provided on a front side panel surface having a window portion. The plurality of operation buttons are located below the window portion of the front side panel and are arranged in the left-right direction with a gap larger than the finger width of an average person, and the width of the operation surface protruding from the front side panel surface is large. A switch structure for a door for a high-frequency heating device, characterized in that it is formed larger than the finger width of the average person.