JPS60200028A - Microwave oven - Google Patents

Abstract

PURPOSE:To improve an outer appearance and a safety transportation of the titled device or the like by a method wherein both a door hinge and a door stopper are arranged inside of the device at a door for the titled device. CONSTITUTION:A hinge pin 18 and a stopper pin 19 are attached to a hinged plate 17 fixed to a base plate of a main body, the hinge pin 18 is fitted into a hinge insertion hole 14 made at the lower surface of a door 7 so as to provide a fulcrum point in case of opening or closing the door 7. The stopper pin 19 is fitted to an arcuate stopper pin insertion hole 15, slid in the insertion hole 15 as the door is opened or closed to provide a function of stopper at the end of opening or closing. With this arrangement, no projection is provided and its safety can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to the structure of a door of a high-frequency heating device such as a so-called microwave oven.

Conventional structure and its problems Traditionally, the door of this type of high-frequency heating device rotates around a pin to open and close, and some had a stopper to prevent it from opening beyond a certain angle. Also, the stopper portion was exposed, resulting in an unsightly appearance, and the end surface of the device could cause damage when the device was carried. Furthermore, since a pin and a stopper were attached to one end of the door, dimensional accuracy was poor and productivity was also a problem.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks, and improves the appearance by configuring the door hinge and the stopper when opening the door inside the device so that they are not visible from the outside. The purpose is to provide a high-frequency heating device that is safe to carry, and to improve productivity by making the structure of one end of the door as simple as possible.

Structure of the Invention In order to achieve the above object, the high frequency heating device of the present invention has a plate attached to a main body and having two pins, and a door having one hole and one arcuate hole on the lower surface, The bottom of one of the holes in the bottom of the door and one of the pins aligns to form a fulcrum when the door is opened and closed, and one of the pins fits in the arcuate hole in the bottom of the door to stop the door from moving when the door is opened. The lower surface of the door of the high-frequency heating device has no protrusions or edges, which improves the appearance and makes it safer to carry the high-frequency heating device.The door has a simple structure, which improves dimensional accuracy. Because of this, there are fewer defects due to radio wave leakage, and productivity can be improved.

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

FIGS. 1 and 2 are diagrams showing the configuration of a high-frequency heating device, in which a high-frequency oscillator 1 that oscillates microwaves of 2450 MHz is coupled to a metal waveguide 2 and an antenna 3. The high frequency wave radiated from the high frequency oscillator 1 into the waveguide 2 propagates inside the waveguide 2 and is further radiated into the heating chamber 4 .

The high frequency waves radiated into the heating chamber 4 are absorbed by the food 5 placed in the heating chamber 4, and dielectrically heat the food 5 from inside the food 5. Furthermore, the high frequency oscillator 1 is self-heated due to internal loss, and is constantly cooled by the blower fan 6 during oscillation to prevent failure. In addition, the front surface of the heating chamber 4 is configured with a door 7 that can be opened and closed and has one hole and one arcuate hole on the lower surface, and an electrical parts chamber 8 is located on the side of the heating chamber, in which a high frequency oscillator 1 and a blower fan are installed. 6. A high voltage transformer 9 and a high voltage capacitor 10 for applying high voltage to the high frequency oscillator are located. An operation panel 11 is constructed on the front side of the electrical parts room, and includes a timer knob 12, a cooking start button 13, and the like. The lower surface of the device is covered with a main body base plate 16, and the heating chamber 4
, a high voltage transformer 9, and a high voltage capacitor 10 are installed.

FIG. 3 is a perspective view of the door, and the lower surface of the door 7 has a hinge pin insertion hole 14 and a stopper pin insertion hole 15. The stopper pin insertion hole 15 has an arcuate shape centered on the hinge pin insertion hole 14.

FIG. 4 is a structural diagram of a hinge and a stopper at the bottom of the door, and the structure of the hinge will be explained using this figure. A hinge pin 18 and a stopper pin 19 are attached to the hinge plate 17 attached to the main body base plate 16, and the hinge pin 18 is 1M aligned with the hinge pin insertion hole 14 and serves as a fulcrum when the door 7 is opened and closed. The stopper pin 19 fits into the arc-shaped stopper pin insertion hole 15, and when the door is closed, the stopper pin is located near the end of the stopper pin insertion hole, and when the door is opened, the door is connected to the hinge pin 18 and Since the stopper pin rotates around the hinge pin insertion hole 14, the stopper pin slides in the arc-shaped stopper pin insertion hole 15 around the hinge pin insertion hole, and when it moves at a certain angle, it hits the end surface and the door opens further. prevent them from doing so.

As described above, according to this embodiment, the hinge pin and the stopper can be configured inside the high-frequency heating device, the appearance can be improved, and it is possible to provide a high-frequency heating device that is safe to carry. In addition, the positional regulation of the stopper angle is determined by the hole positions of the hinge pin insertion hole and the stopper pin insertion hole, so if both holes are made at the same time with a mold, variations in the door opening angle can be reduced, and the stopper structure with pins can be used. Therefore, it is more stable in terms of strength than conventional stoppers that are formed by bending sheet metal. In addition, as mentioned above, one end of the door has only two holes, the hinge pin insertion hole and the stopper pin insertion hole, so the structure is simpler than before, and the dimensional accuracy between the radio wave sealing surface of the door and the hinge pin is improved. Because of this, there are fewer radio wave leakage defects and it is also possible to improve productivity.

Effects of the Invention As described above, according to the present invention, the following effects can be obtained.

(1) It is possible to provide a high-frequency heating device that has a flat, silky shape with no protrusions or end faces on the lower part of the device, and which has two design advantages.

(2) It is possible to provide a safe high-frequency heating device that does not cause injury to hands or the like due to protrusions or end faces when carried.

(3) It is possible to provide a high-frequency heating device that has small variations in the angle when the door is opened and has stable quality even under strong direction changes.

(4) The structure of the door has been simplified, so the
It is possible to provide a high-frequency heating device with good dimensional accuracy, stability against radio wave leakage, and high productivity.

[Brief explanation of drawings]

FIG. 1 is an external perspective view of a high-frequency heating device according to an embodiment of the present invention, FIG. 2 is a cross-sectional view thereof, FIG. 3 is a perspective view of a door, and FIG. 4 is a configuration diagram of a door hinge. 1... High frequency oscillator, 7... Door, 1
4... Hinge pin insertion hole, 15... Stopper pin insertion hole, 17... Hinge plate, 18.
...Hinge pin, 19...Stopper pin. Name of agent: Patent attorney Toshio Nakao (1st person)
Figure 2

Claims (1)

[Scope of Claims] (11) A main body having a heating chamber therein for storing food, a high-frequency oscillator for supplying high-frequency power to the heating chamber, and a door provided at the front of the heating chamber that can be opened and closed; A high-frequency heating device whose hinge consists of two cylindrical pins, one circular hole, and one arcuate hole. (2) The door hinge is a plate attached to the main body that has two pins. The high frequency heating device according to claim 1, comprising a door having a circular hole and an arcuate hole on its end face.