JPH07119986A - Microwave oven - Google Patents

Abstract

PURPOSE:To improve quality by increasing the strength of a door handle in a commodity for business use and reducing the temperature of a grip for the door handle. CONSTITUTION:A microwave oven is constituted so that synthetic resin parts, having a high strength, a high resistance to heat and small thermal shrinkage respectively, are arranged between a door main body 6, having a seal device and the like, and a metallic member 3 of appearance member of the door or stainless steel or the like and between the metallic member and a door handle 2 made of a metal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door device in a high frequency heating device, and an object thereof is to improve the quality of a door handle.

[0002]

2. Description of the Related Art An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 is an external view of a high frequency heating device. The appearance of the high-frequency heating device includes a door attached to the front of the cooking cabinet, a control panel 18 including a keyboard for setting various cooking modes and a display device, and the body of the device is covered with a body cover 8. The door 1 is provided with a peep window 5 and a door handle 2 in the center thereof, and in the case of a commercial product, the surface of the door is a metal member 3 such as stainless steel except for the peep window portion.
It is common to cover with. The reason and the like are not directly related to the present invention and therefore omitted. Needless to say, the surface of the control panel 18 also covers the metal member except the operation portion.

Conventionally, as shown in FIG. 3, a door device of this type is generally provided with a metal member made of stainless steel or the like on the exterior of the door, and has the following structure.

The slit plate 10 is a sealing member for sealing high-frequency waves, and the viewing window 7 is composed of punching holes or the like for confirming the state of food in the refrigerator. The seal opening closing member 11 for covering the seal member, the door screen A8 made of glass or the like on the cooking cabinet side that constitutes the peep window, and the door screen B5 made of the same glass or the like that constitutes the peep window on the exterior side of the door. And the like, which constitutes the inner circumference of the door of the peep window and holds the metal member 3 made of stainless steel or the like which is the appearance member, and the door body 6 which serves as a mounting base for the appearance holding material 9 made of synthetic resin or the like. The boss 16 provided integrally with the door handle 2 is provided so as to contact the door body 6, and the screw 1
It was fixed at 7.

[0006]

However, in the above-described structure, the boss 16 is supported by the distance H between the door surface and the surface of the door main body 6 which also serves as the mounting seat of the door handle 2, so that the strength is unsatisfactory. Not only is it stable, especially when equipped with an electric heating device, the door body 6 can be heated by heat conduction from the cooking cabinet.
The temperature of the door handle mounting seat is extremely higher than that of the other parts of the door handle 2, and if the door handle is made of synthetic resin, the screw 17 fixing hole of the boss 16 may be cracked by heat or loosened due to heat shrinkage. Since the door handle 2 comes off and causes a serious quality problem such as glazing, a metal door handle is generally used in consideration of severe usage conditions especially for commercial use.

However, if the door handle is replaced with a metal by the conventional structure shown in FIG. 3, the mounting seat of the door handle 2 becomes high temperature as described above, and the ambient temperature inside the door also becomes considerably high. The metal member 3 made of stainless steel or the like provided in the section also becomes hot, and the heat is transmitted to the handle portion of the metal door handle 2 and becomes so high that it cannot be touched by the hand when the door is opened and closed. It also had problems such as the problem above.

The present invention solves the above-mentioned conventional problems. In the present invention, a spacer-like structure is provided between the door body and a metallic member such as stainless steel, and between the metallic member and a metallic door handle. It is configured to interpose a different synthetic resin.

Further, in the present invention, the synthetic resin is a PPS resin.

[0010]

In order to solve the above-mentioned problems, a high-frequency heating apparatus of the present invention is provided with a high-frequency heating device between a door body and a metal member such as stainless steel, and between a metal member and a metallic door handle. The spacers are made of synthetic resin.

Further, the above synthetic resin is a PPS resin.

[0012]

According to the present invention, the spacer-like synthetic resin is provided between the door body and the metallic member such as stainless steel, and between the metallic member and the metallic door handle. By interposing a metal member so as to sandwich it, heat conduction from the door body side can be cut off, and the handle temperature of the door handle can be dramatically reduced.

Further, in the present invention, the above-mentioned synthetic resin is used as PPS.
By using a resin, it becomes a spacer that has heat resistance, high strength, and little shrinkage during use, so that it is possible to provide a strong and strong door handle that does not cause a feeling of rattling during actual use.

[0014]

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

An embodiment according to the present invention will be described with reference to FIG. It has a slit plate 10 which is a seal member for sealing high-frequency waves, and a peep window 7 formed of a punching hole or the like for confirming the state of food in the refrigerator, and not only the door handle 2 but also the slit plate 10 and other seal members. A seal part opening closing member 11 for covering the parts, a door screen A8 made of glass or the like on the cooking cabinet side that constitutes the peep window, and a door screen B5 made of the same glass or the like that constitutes the peep window on the exterior side of the door are held. A conventional example is used for the door main body 6 which forms the inner circumference of the door of the peep window and which is an attachment base material for the external appearance retaining material 9 made of synthetic resin or the like for holding the metallic member 3 made of stainless steel or the like which is the external appearance member. A door handle is attached in the same manner as the above, but in the present invention, the door handle 2 made of a metal member such as zinc die cast and the door body 6 are provided.
A handle spacer A13 and a handle spacer B14, which are made of synthetic resin having high strength, heat resistance, and small heat shrinkage, are interposed between the above and the above.

The handle spacer A13 is provided between the door handle 2 and the metal member 3 made of stainless steel or the like, the handle spacer B14 is provided between the door body 6 and the metal member 3, and the handle spacer A13 and the handle The metal member 3 is sandwiched between the spacer B14 and the spacer B14.
5 with handle spacer A13 and handle spacer B1
4. The metal member 3 is fixed so as to be sandwiched. Therefore, the metal member 3 and the appearance holding material 9 are provided with holes for fitting or penetrating the handle spacer A13 and the handle spacer B14.

With the above-mentioned structure, the handle body A13 and the handle spacer B14, which are made of synthetic resin, handle the ambient temperature inside the door body 6 and the interior of the door, which becomes high due to heat conduction from the cooking cabinet, and the heat transmitted from the metal member 3. Because of the shutoff, the handle of the metal door handle can be cooled to a level that is not harmful in use.

Further, a material having a high strength and a high heat resistance and a small heat shrinkage is used, and sufficient consideration is given so as not to cause problems such as strength as a door handle and flicker.

By using PPS resin as the material of the handle spacer A13 and the handle spacer B14, the handle spacer has high strength and high heat resistance, which are the properties that the handle spacer should have, as will be apparent from the following characteristic table. In addition, the heat shrinkage is small, and the dimensional stability at high temperatures is all satisfied. Therefore, the strength of the door handle can be sufficiently ensured, and the door handle can be configured to be free from glare.

Table 1 shows the required characteristics of the high heat resistant synthetic resin.

[0021]

As described above, according to the high frequency heating apparatus of the present invention, the following effects can be obtained.

(1) A handle spacer made of synthetic resin is provided between the door body and the metallic door handle.
Between the door body and a metal member made of stainless steel or the like which is also an exterior material, and between the metal member and the door handle,
By interposing the metal members so as to sandwich them,
Since it is possible to block the heat conduction from the door body and the metal member that is the exterior material, even if it is a door that has an electric heating device and becomes a high temperature, it is a metal door handle according to the regulations,
It is possible to provide a door handle that does not interfere with actual use.

(2) Further, the handle spacer is made of PP.
By using S resin, it has characteristics of high strength, high heat resistance, small heat shrinkage, and dimensional stability under high temperature, which are characteristics that should be provided as a handle spacer. It is possible to achieve a door handle that fully satisfies the strength of (1) and is free from glare and the like.

[0024]

[Table 1]

[Brief description of drawings]

FIG. 1 is a sectional view of a main part of a high-frequency heating device according to an embodiment of the present invention.

[Figure 2] External view of the high-frequency heating device

FIG. 3 is a sectional view of a main part of a conventional high-frequency heating device.

[Explanation of reference numerals] 1 door 2 door handle 3 metal member such as stainless steel 6 door body 13 handle spacer A 14 handle spacer B

Claims (2)

[Claims] 1. A high frequency oscillating device, a cooking cabinet for heating food, and a door device having a door handle mounted on the front surface of the cooking cabinet so as to be openable and closable in various ways. Between the door body of the device and the metal member such as the stainless steel, and between the metal member and the door handle, so as to sandwich the metal member,
A high-frequency heating device having a structure in which a handle spacer made of synthetic resin is interposed. 2. The high-frequency heating apparatus having a door device according to claim 1, wherein the door device has a structure in which the spacer made of the synthetic resin is made of PPS resin.