JPH0470758B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention provides a safety device in which a door switch is provided in an exhaust guide provided outside the heating chamber, and a switch operation part for operating the door switch is provided so as to penetrate through the heating chamber. The present invention relates to a high-frequency heating device.

Conventional Technology Most conventional high-frequency heating devices generally have an exterior plate or a lower plate installed outside the heating chamber, which limits the ability to reduce assembly man-hours and component costs. To improve these problems, there is a so-called horizontal type in which an electrical parts storage chamber is placed next to the heating chamber, and a heating chamber made of one piece is shown in Japanese Patent Application No. 105036/1983. There is a so-called vertical type in which an electrical parts chamber is provided at the lower part of the heating chamber, such as that disclosed in Japanese Patent Application No. 119319/1983. The former horizontal type has a single-layer heating chamber, but even with the conventional double structure, it is not within the scope of normal design to provide a latch unit in the electrical parts room. Even the vertical type has plenty of space to store the latch unit.

Problems to be Solved by the Invention However, in such a high-frequency heating device, the heating chamber has a single-layer structure as in the former case, and in the case of a vertical type high-frequency heating device as in the latter case, the heating chamber and electrical parts storage chamber are not large enough. As the configuration becomes simpler,
It is self-evident that if the latch unit is installed in a position like the door key 20 shown by the dotted line in Fig. 1, it is already inside the heating chamber 3 and cannot be installed in a place exposed to high frequencies. There were problems in that the countermeasures for these problems were extremely complicated and expensive, as they caused damage to circuit wires, emitted unnecessary radiation due to high frequencies on circuit wires, and caused noise on televisions and radios.

The present invention solves these conventional problems by providing a door switch inside the exhaust guide outside the heating chamber, and by providing a switch operating section that transmits door movement so as to pass through the heating chamber. The purpose of the present invention is to provide a high-frequency heating device that has excellent workability and greatly contributes to reducing component costs.

Means for Solving the Problems In order to achieve the above object, the high-frequency heating device of the present invention is provided with a door switch in an exhaust guide provided outside the heating chamber, and a switch operating section for operating the door switch is inserted through the heating chamber. This is a configuration provided in

Function The high-frequency heating device of the present invention includes a door switch provided in the exhaust guide outside the heating chamber, and a switch operating portion for operating the door switch provided so as to penetrate through the heating chamber. Therefore, since the switch unit is not exposed to high frequencies, the switch will not be destroyed by high frequencies, and high frequencies will not be applied to the circuit wires, so unnecessary radiation will be emitted and will not be transmitted to TVs or radios. There is no need to introduce any noise.

Furthermore, since these switch units are housed within the exhaust guide, the exhaust guide can also serve as a switch mounting part and a switch cover.

In addition, since the switch is placed in the exhaust guide at the rear of the heating chamber to detect the movement of the front door of the heating chamber, it is possible to quickly detect and respond to the appropriate movement of the door and create an appropriate door switch structure. It is something that you have.

Embodiment A high-frequency heating device according to an embodiment of the present invention will be described below with reference to the drawings.

As shown in Fig. 1, below the heating chamber 1 in the main body there is an electrical chamber 2 that stores electrical components.
There is a door 3 pivotally supported in the front opening of the door 3 so as to be freely openable and closable. An operation panel 4 covers the front of the electric room 2, and includes a knob 7 of a timer 6 for controlling the heating time of the object 5 to be heated. A perspective view of the exterior is shown in Figure 2.

There is a handle part 8 at the bottom of the door 3, which is formed by hollowing out two parts of the door 3.

Next, an exhaust guide 9 is provided at the rear of the heating chamber 1. Steam generated by cooking the object 5 in the heating chamber 1 is removed through the punched hole 1 in the rear wall 1a of the heating chamber 1.
b, and is discharged to the outside from the punched hole 9a above the exhaust guide 9. A door switch 10 is provided in the exhaust guide 9, and a hole 1d in the front plate 1c is inserted so that a switch operation part 11 that transmits the movement of the door 3 and presses the switch 10 passes through the heating chamber 1.
It is slidably provided using the hole 1e of the rear wall 1a as a guide. Therefore, when the door 3 is closed, the switch operating section 11 moves in the direction of arrow A, pushes the door switch 10, and turns on the circuit.

Further, when the door 3 begins to open, it moves in the direction of arrow B due to the returning force of a contact spring or the like (not shown) inside the door switch 10, and the door switch 10 turns OFF.
Since the switch operating section 11 is located within the heating chamber 1, it may be made of polypropylene or the like with low dielectric loss.

With this configuration, only the heating chamber 1 is independent in a single-piece configuration, and other electrical components are stored in the electrical compartment 2. Therefore, first complete the assembly of each component in the electrical compartment 2, and then operate the Attach the unit on panel 4. After that, place the heating chamber 1 on top of the electrical chamber 2, fix them with screws, etc., and insert the door 3 into the front opening.
, and from the rear of heating chamber 1, press switch operation part 1.
1 is inserted, the exhaust guide 9 with the door switch 10 is attached, and the assembly of the product is completed. That is, since the assembly line assembles each unit, the assembly line can be shortened and mass production is very good. In addition, since the door switch 10 is not installed inside the heating chamber 1, it is not exposed to high frequencies, so the door switch 10 is not damaged by high frequencies. There is no interference with the radio.

Furthermore, since the door switch 10 is attached to what is originally required as the exhaust guide 9, the cost of parts increases only slightly, but it can be made into a unit, which facilitates assembly and greatly contributes to improving mass productivity.

Effects of the Invention As described above, in the high-frequency heating device of the present invention, a door switch is provided in the exhaust guide outside the heating chamber, and a switch operating section for operating the door switch is provided to penetrate the heating chamber. Therefore, since it is not exposed to high frequencies, the door switch itself will not be damaged by high frequencies, and high frequencies will be applied to the circuit wires connected from the door switch to each circuit, causing unnecessary radiation and interfering with televisions and radios. There is none. In addition, since the door is installed in the front of the heating chamber and the switch is installed in the rear, it responds very sensitively to the movement of the door, making it a highly sensitive door switch with good immediate decision-making ability, so the leakage of radio waves from around the door is also extremely low. Since the circuit can be turned off when the temperature is low, it is an extremely safe device. In addition, since the exhaust guide is used as a switch mounting part and a cover for the switch mounting part, cost increases can be kept to a minimum, and the concept of unitizing the door, heating room, electrical room, and exhaust guide unit is improved. It is possible to assemble the parts while they are still in use, making it possible to provide equipment that is highly mass-producible.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view of a high-frequency heating device according to an embodiment of the present invention, and FIG. 2 is an external perspective view of the device with the door half-open. 1...Heating room, 2...Electric room, 3...Door, 4
... Operation panel, 5 ... Heated object, 7 ... Timer knob, 9 ... Exhaust guide, 10 ... Door switch, 11 ... Switch operation section.

Claims (1)

[Scope of Claims] 1. A heating chamber, an exhaust guide forming an exhaust passage outside the heating chamber, an opening provided on the front surface of the heating chamber, and a shaft provided in the opening that can be opened and closed. It consists of a supported door, a door switch provided on the exhaust guide and linked to opening/closing of the door, and a switch operation part that responds to the door switch,
This switch operation section is a high-frequency heating device that is installed through the heating chamber. 2. The high frequency heating device according to claim 1, wherein the operating section is formed of a low dielectric loss material.