JPH0317128Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to cooking appliances such as toaster ovens and microwave ovens, and relates to the structure of a display section that displays the set time and remaining time of a timer.

[Conventional technology]

For example, a toaster oven is a 6th cooker.
As shown in the figure, a display panel 3 with a vertically long display window 2 opened in the center is arranged on one side of the front of the toaster main body 1, and on both edges of the display window 2,
For example, a scale 4 corresponding to low heat was displayed on the left edge, and a scale 4 corresponding to high heat was displayed on the right edge. A transparent plate 5 is disposed from the inside of the display window 2 of the display panel 3, and a timer (not shown) arranged behind the transparent plate 5 on one side of the toaster main body 1 operates in conjunction with a timer (not shown). A pointer band 6 that moves forward and backward is slidably arranged along the transparent plate 5, and by rotating the timer using a timer knob 7 provided on the side of the toaster body 1, the pointer band 6 can be slid up and down. The timer was then set by aligning the tip of the pointer band 6 with the scale 4 displayed on both edges of the display window 2 via the transparent plate 5.

Then, when the timer is set, the heating element is energized so that the food placed in the toaster body 1 is toasted for the set time.

[Problem that the invention attempts to solve]

In a cooker, for example, when you toast bread, steam is always generated, but when that steam enters the back side of the transparent plate through the toaster body, the back side of the transparent plate becomes cloudy due to the temperature difference between the front and back sides of the transparent plate.
There was a problem that the transparency of the transparent plate deteriorated, making it difficult to see the pointer band and making it difficult to set the timer.

To prevent fogging of the transparent plate, microwave ovens and other devices are equipped with an exhaust fan driven by a dedicated exhaust motor.The exhaust fan forcibly removes water vapor from inside the main body and prevents the water vapor from forming on the transparent plate. Although such contact is avoided, the cost of installing such an exhaust fan and motor increases, and it is particularly difficult to install such an exhaust fan and motor in the case of a toaster oven, which is cheaper than a microwave oven.

The present invention has been made in view of the above-mentioned points, and an object of the present invention is to provide a cooking device which has a simple and inexpensive structure and prevents the transparent plate from fogging.

[Means for solving problems]

In the present invention, a timer 15 is disposed inside a display frame 51 provided on one side of the front surface of the main body 11, and a display means 65 performs display in conjunction with the timer 15.
is arranged on the surface of the display frame 51, and a transparent plate 81 is attached to the surface of the display frame 51 so as to surround the surface of the display means 65. A ventilation hole 87 is provided through the front and back surfaces.

[Effect]

In the present invention, water vapor that has entered the back surface of the transparent plate flows out to the front surface of the transparent plate through the vents due to convection, thereby reducing the temperature difference between the front and back surfaces of the transparent plate.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 5 shows the whole toaster oven. This main body 11 has a roasting chamber 13 whose front surface is opened and closed by an opening/closing door 12. By energizing a heating element (not shown), the object to be roasted stored in the roasting chamber 13 is roasted.

Further, a timer setting section 14 is provided on one side of the roasting chamber 13 of the main body 11. This timer setting section 14 has a timer 15 as shown in FIGS. 1 and 4, and this timer 1
5 is a well-known mechanism, and when the timer shaft 16 is rotated in one direction (approximately 180° clockwise in Figure 1), the mainspring spring is tightened to set the time, and the switch is closed. When the set time elapses due to rewinding, the switch is opened. A plurality of terminals 17 led out from the switch are provided on the outer peripheral surface of this timer 15, and on one side,
A bell 18 that resonates when a set time has elapsed is disposed, and the timer shaft 16 is protruded from the other side, and an annular mounting frame 19 is attached around the timer shaft 16.

A roller 21 that rotates together with the timer shaft 16 is connected to the timer shaft 16 of the timer 15, and the roller 21 is formed in an annular shape with one side open in the direction of the timer 15, and has a timer in the center and one end. A roller shaft 22 is provided to which the shaft 16 is connected and the other end thereof is connected to a setting knob 96, which will be described later.
A pair of roller holes 24, 24 are formed which open in the direction of approximately 180 degrees, leaving the pointer band 23, and an annular pointer banding part 25 is formed on the outer periphery of the pointer banding part 2.
5 is provided with a flange portion 26 that supports one side edge of a pointer band 31, which will be described later. Also,
A pointer band lead-out hole 27 is formed in the pointer band winding portion 25 of the roller 21, and a protrusion 28 is provided at one edge inside the pointer band lead-out hole 27.

The protrusion 28 provided on the inner circumferential surface of the roller 21 has a proximal end 3 of a pointer band 31 formed in a vertically long band shape.
2 is attached, and this pointer band 31 is adapted to be wound around the pointer band winding portion 25 through the pointer band outlet hole 27.
A vertically long connecting hole 34 is formed.

A roller cover 4 is provided on the other side of the roller 21.
1 is attached, and this roller cover 41 is formed in an annular shape with one side opening in the direction of the roller 21, and a cover side surface portion 42 is disposed opposite to the other side of the roller 21 and covers the other side edge of the pointer band 31. The cover outer circumferential portion 43 is disposed opposite to the outer periphery of the pointer banding portion 25 to hold the pointer band 31 between the pointer banding portion 25 and the pointer banding portion 25. Further, a through hole 44 through which the roller shaft 22 rotatably passes is formed in the center of the cover side surface portion 42.
The edge of the inner surface facing the rollers 21 of No. 4 has an insertion hole 45a in the center, and the support rod 2 is inserted into each roller hole 24, 24 and inserted into each roller hole 24, 24.
Protrusions 45, 45 that are movable within a range of approximately 180 degrees are provided in contact with the protrusions 45, 4.
By screwing the mounting screws 46, 46 inserted through the insertion holes 45a, 45a of 5 from the outside into the mounting frame 19 of the timer 15, the timer 15 is attached to the protrusion 4.
It is fixed to the roller cover 41 via 5 and 45. In this fixed state, the roller 21 can rotate within a range of approximately 180 degrees between the roller holes 22, 22 in which the protrusions 45, 45 are engaged with the roller cover 41. In addition, the cover outer peripheral portion 43
In this case, the pointer band 31 is attached to the pointer band winding part 2 at a substantially lower position.
5 to a display frame 51 to be described later.
A lead-out portion 48 is provided, and this lead-out portion 48
The mounting part 4 is fixed to the display frame 51 at the upper and lower positions of the display frame 51.
9 and 49 are provided protrudingly.

The display frame 51 is formed into a vertically long plate shape, and is attached to the main body 1.
Each mounting portion 49, 49 is fixed. A rectangular edged rib portion 53 is protruded from the surface of the display frame 51, and a display board mounting portion 54 is provided over a wide area other than the other side edge of the rib portion 53. A display board 55 is attached to the display board attachment part 54. This display board 55 is formed in a large size with the names of a plurality of items to be roasted, for example, for high heat and low heat, displayed on the surface, and a flange piece 56 is bent toward the surface at the edge other than the other side edge. has been done. Further, a pointer sliding portion 57 is provided on the other side of the display plate mounting portion 54 within the rib portion 53. This pointer sliding part 57 has a sliding recess 58 provided along the edge of the display board mounting part 54 and a guide groove 59 provided in the center of this sliding recess 58 along the sliding recess 58. , a display frame 51 is provided below the sliding recess 58 and the guide groove 59.
The lead-out groove 4 of the lead-out portion 48 has a through opening on the front and back surfaces of the lead-out groove 4.
An opening 60 is provided in which the tip of the pointer sliding portion 57 fits, and support holes 61 are provided at the upper and lower ends of the pointer sliding portion 57, the center line of which coincides with the guide groove 59, and which penetrates through the upper and lower surfaces. Projecting pieces 62, 62 each having a diameter 61 are provided in a protruding manner.

The tip 33 of the pointer band 31 is guided to the sliding recess 58 from the lead-out groove 47 of the lead-out portion 48 fitted in the opening 60, and a display linked to the timer 15 is displayed on the tip 33 of the pointer band 31. A pointer 65 is attached as a display means. This guideline 65
has a pointer base 66 that slidably engages with the sliding recess 58, and has a pointer base 66 on the back surface of the pointer base 66 that engages and connects with the connection hole 34 of the pointer band 31 and is slidably inserted into the guide groove 59. The protrusion 67 that engages with the guide groove 5
A pointer portion 68 is horizontally provided, which extends vertically along the pointer 9 and is disposed horizontally on the display board 55 at the upper part of one side of the pointer base 66 . In addition, the pointer base 6
6 is formed with a sliding hole 69 whose center line coincides with the support holes 61, 61 and passes through the upper and lower surfaces, and the pointer shaft 70 inserted from the upper support hole 61 passes through the sliding hole 69. By inserting the pointer 65 into the lower support hole 61, the protrusion 67 aligns with the guide groove 5.
9 to prevent rotation in the horizontal direction, and its position in the vertical direction is supported by a pointer shaft 70, along which it is slid in the vertical direction. A head 71 is provided at the upper end of the pointer shaft 70 to lock onto the upper edge of the upper support hole 61 to prevent it from coming off downward.

Further, a horizontally long operation opening 75 is formed at the lower part of the surface of the display frame 51, and this operation opening 75 has the following functions:
A changeover switch 76 arranged inside the display frame 51
Three operation buttons 77 are arranged to switch and operate. This changeover switch 76 is
It is connected to the power supply, timer 15, and electric heating elements above and below the roasting chamber 13, and the energization state to the electric heating elements can be switched by operating each operation button 77.
Each operation button 77 is for low heat, for example, for applying DC current to the upper and lower electric heating elements of the roasting chamber 13 from the left;
It is configured for use with a top flame, in which electricity is applied only to the upper electric heating element, and for use in a high flame, in which parallel current is applied to the upper and lower electric heating elements.

A transparent plate 81 is disposed on the surface of the display plate mounting portion 54 and the pointer sliding portion 57 of the display frame 51 so that the pointer 65 can be moved via a rectangular frame-shaped gasket 79. The mounting edge 82 provided on the outer peripheral edge of the plate 81 is in close contact with the rib portion 53 through a packing 79 disposed on the periphery of the rib portion 53.
The transparent plate 81 is tightly fixed to the display frame 51 by a plurality of mounting screws 84 that are screwed into the display frame 51 through a plurality of mounting holes 83 provided in the mounting edge 82 . Further, a mating step portion 85 projecting in the shape of a rectangular frame is provided on the surface of the transparent plate 81 at a location corresponding to the surface of the display board 55 of the transparent plate 81, and an inner peripheral edge of the mating step portion 85 is provided. Decorative section 8
6 are provided, and between the upper and lower edges of the decorative step part 86 and the mating step part 85, vent holes 87, 87 are formed to penetrate through the front and back surfaces of the transparent plate 81 along the decorative step part 86. There is.

Note that a plurality of insertion holes 89 are formed in the peripheral edge of the display frame 51.

A decorative plate 91 made of an opaque material that matches the outer contour of the main body 11 is attached to the surface of the display frame 51. This decorative board 91 has a display frame 51 on the periphery.
A plurality of caulking pieces 92 are provided protrudingly to be inserted into each of the insertion holes 89 and caulked at their tips, and on the surface of this decorative plate 91, there is a display window that fits into the mating stepped portion 85 of the transparent plate 81. 93 is formed, and an operation window 94 that fits into the operation opening 75 and faces the operation button 77 is also formed. Note that a time scale 95 is displayed on the right edge of the display window 93.

Further, the roller shaft 22 projects from the side surface of the main body 11, and a setting knob 96 for rotating the timer shaft 16 of the timer 15 via the roller shaft 22 is attached to the roller shaft 22.

Next, the operation of this embodiment will be explained.

By operating the setting knob 96, the roller 21 rotates via the roller shaft 22, and the pointer band 31 moves into the lead-out groove 47.
It is led out to the sliding recess 58 of the pointer sliding section 57 through.

The pointer 65 attached to the tip of the led out pointer band 31 slides upward along the pointer shaft 70, and the pointer portion 68 of the pointer 65 moves upwardly on the surface of the display board 55. Then, the roasting time is set by matching the pointer 68 with the product name displayed on the display board 55. When the setting knob 96 is operated to align the pointer 65, the pointer 65 slides along the pointer shaft 70, and its pointer portion 68 moves horizontally, and
Since the pointer portion 68 of No. 5 moves on the surface of the display board 55, it is easy to align.

In addition, with the operation of the setting knob 96, the timer shaft 16 rotates and the switch of the timer 15 is closed, and the electric heating element in the roasting chamber 13 is energized via the changeover switch 76. The object to be roasted placed in is roasted.

Then, the timer shaft 16 of the timer 15 is rotated by the mainspring spring in the opposite direction to that during operation, the roller 21 is rotated in the opposite direction, and the pointer band 31 is rotated to the pointer band winding portion 25.
Since the needle 65 is wound up, the pointer portion 68 of the pointer 65 moves downward on the surface of the display board 55 while displaying the remaining time.

When the pointer 65 reaches the zero scale position on the display board 55,
The rotation of the timer shaft 16 is stopped, the switch of the timer 15 is opened, and the power to the electric heating element is cut off.

Note that when the electric heating element in the roasting chamber 13 is energized and the object to be roasted, such as bread, placed in the roasting chamber 13 is roasted, water vapor is generated from the object to be roasted, and the Water vapor may flow into the back side of the transparent plate 81 through the inside of the main body 11, but the water vapor that has entered the back side of the transparent plate 81 is transferred to the transparent plate 81 through the vent 87 at the top of the transparent plate 81 due to convection. The transparent plate 81
Since the outside air flows into the back surface of the transparent plate 81 from the vent hole 87 at the lower part of the transparent plate 81, the temperature difference between the front and back surfaces of the transparent plate 81 is reduced, and the transparent plate 81 can be prevented from becoming cloudy.

Further, in the above embodiment, the vent hole 87 is connected to the transparent plate 8.
1, but at least transparent plates 8
1, the upper ventilation hole 8
Since the water vapor flows out from the transparent plate 7, an air flow is generated on the back surface of the transparent plate 81, and it is possible to prevent the transparent plate 81 from becoming cloudy.

Further, in the above embodiment, a toaster oven is shown as the cooking device, but various cooking devices such as a microwave oven having a transparent plate for display may include a transparent plate 81 provided with a vent 87 to prevent fogging. In particular, when used in a microwave oven, it is possible to eliminate the exhaust motor, exhaust fan, etc. that were conventionally used exclusively, and it is possible to miniaturize the product and reduce costs. .

[Effect of idea]

According to the present invention, at least the upper edge of the transparent plate, which is attached to surround the surface of the display means that performs display linked to a timer, is provided with a vent that penetrates both the front and back surfaces, so that air vents that penetrate into the back side of the transparent plate are provided. The water vapor flows out to the surface of the transparent plate through the vents due to convection, reducing the temperature difference between the front and back surfaces of the transparent plate, and preventing the transparent plate from fogging.
Anti-fogging can be achieved with a simple and inexpensive configuration of just providing ventilation holes in the transparent plate.
Compared to the anti-fogging structure conventionally used for preventing fogging, it is possible to achieve a reduction in size and cost.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of the main parts of a toaster oven showing an embodiment of the cooking device of the present invention, Fig. 2 is a cross-sectional view of the main parts, and Fig. 3 is a longitudinal sectional view of the main parts.
Figure 4 is a front view with some of the main parts cut away, Figure 5
The figure is a perspective view showing the whole, and FIG. 6 is a perspective view showing a conventional cooking device. 11...Main body, 15...Timer, 51...Display frame, 65...Pointer as display means, 81...
Transparent plate, 87...Vent.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A timer is arranged inside a display frame provided on one side of the front of the main body, and display means for performing a display linked to the timer is arranged on the surface of the display frame, A cooking appliance in which a transparent plate is attached to the surface of the display frame surrounding the surface of the display means, characterized in that at least an upper edge of the transparent plate is provided with a vent opening through the front and back surfaces of the transparent plate. Cooking device. (2) The cooking appliance according to claim 1, which has been registered as a utility model, characterized in that the upper and lower edges of the transparent plate are provided with vents that penetrate through the front and back surfaces of the transparent plate.