JPS6143834B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a door that is freely openable and closable at the opening of a heating chamber of a high-frequency heating device.

Generally, in a high-frequency heating device, it is very dangerous if the high-frequency waves supplied into the heating chamber leak to the outside, so as shown in FIGS. 2 to 4, the high-frequency waves generated by the high-frequency generator 21 are not leaked to the outside of the heating chamber 1. In order to prevent radio waves from leaking, the diameter of the small hole 12 of the radio wave sealing body 10 provided in the transparent window 11 of the door 2 is made as small as possible, and the chiyoke groove 3 is formed on the inner outer periphery of the door 2. I was preventing it from happening. In order to configure such a door 2, the door 2 must be attached to the metal fitting 4, which is a component of the chiyoke groove provided on the front plate 5 of the door 2.
It is common to attach the inner plate 6 with screws 22. However, when the door 2 configured in this manner is opened, the screws 22 that fix the inner plate 6 to the metal fittings A4 of the front plate 5 are exposed, which not only looks unsightly but also causes cooking residue to adhere to the inner plate 6. When this happens, it is necessary to remove cooking waste to prevent high-frequency waves from leaking between the inner plate 6 and the opening peripheral plate 13, but since the screws 22 are exposed, cleaning is difficult.

Furthermore, if the distance between the screws 22 that attach the inner plate 6 to the metal fitting A4 of the top plate 5 is too wide, a gap will be formed between the inner plate 6 and the opening peripheral plate 13, so the distance between the screws 22 may be Since the door 2 has to be installed in an appropriate manner, it takes a lot of time to assemble the door 2, which hinders productivity and is a major drawback in terms of cost reduction.

The present invention consists of a door provided at the opening of a heating chamber so as to be openable and closable, and a chiyoke groove formed on the inner peripheral edge of the door, and the door is constructed by attaching an inner plate to a front plate. The mounting structure is such that the top plate and the inner plate are each provided with metal fittings that form a chiyoke groove, and these metal fittings engage with each other to hold the inner plate on the top plate, thereby solving the above-mentioned conventional drawbacks. .

An embodiment of the present invention will be described below based on FIG.

Note that the same members as in the conventional high-frequency heating device will be described with the same reference numerals.

In FIG. 1, reference numeral 1 denotes a heating chamber provided within the main body of the high-frequency heating device, and a door 2 is provided at the opening of the heating chamber 1 so as to be openable and closable. 3 is a chiyoke groove formed on the inner outer peripheral edge of the door 2;
This prevents high frequency waves from leaking from the openings of the 4 is a metal fitting A forming the third part of the yoke groove, one end of which is fixed by spot welding to the front plate 5 of the door 2;
The other end extends toward the inner plate 6 side of the door 2 and is bent into a substantially L-shape. Reference numeral 7 designates a metal fitting B that forms the third section of the yoke groove, one end of which is fixed by spot welding to the inner plate 6, and the other end is extended toward the top plate 5 side and bent into a substantially L shape, and is attached to the metal fitting of the top plate 5. It engages with A4 and has a substantially mouth-shaped cross section. Reference numeral 8 denotes a rod-shaped member having radio wave absorbing properties, and is made of, for example, ferrite resin or rubber.
By inserting it into the approximately mouth-shaped space formed by the engagement of the metal fitting A4 of the inner plate 6 and the metal fitting B7 of the inner plate 6,
The inner plate 6 is held by the front plate 5. By making the dimensions of this rod-shaped member 8 larger than the dimensions of the approximately opening-shaped space formed by the metal fitting A4 and the metal fitting B7, when the member 8 is inserted into the approximately opening-shaped space, the metal fitting A4, the metal fitting The inner plate 6 is held on the front plate 5 by the elastic force of B7. Reference numeral 9 denotes a check cover provided to prevent food particles and foreign matter from entering the check groove.
Reference numeral 10 denotes a radio wave sealing body provided in the transparent window 11 of the door 2, and this radio wave sealing body 10 has numerous small holes 1.
2 is provided. Reference numeral 13 denotes an opening peripheral plate provided at the opening of the heating chamber 1.

Note that the rod-shaped member 8 inserted into the approximately mouth-shaped space formed by the engagement of the metal fitting A4 of the top plate 5 and the metal fitting B7 of the inner plate 6 can be inserted into the inside of the door 2 even if it is provided in the longitudinal direction of the door 2. The inner plate 6 can be held on the top plate 5 without creating a gap between the plate 6 and the opening peripheral plate 13.

When assembling the door 2 in the high-frequency heating device configured in this way, radio waves are generated between the top plate 5 having the metal fitting A4 where the 3-way York groove is formed and the inner plate 6 having the metal fitting B7 forming the 3-way York groove. A transparent window 11 is provided with a seal body 10 interposed therebetween, a check cover 9 is attached to the check groove 3, and the door 2 is closed.
The door 2 can be easily assembled by inserting the rod-shaped member 8 into the approximately opening-shaped space formed by the engagement of the metal fittings A4 and B7 provided on the front plate 5 and the inner plate 6. can.

Therefore, the metal fitting A provided on the front plate 5 as in the conventional case
Since the trouble of attaching the inner plate 6 to 4 with screws can be saved,
Not only the efficiency of assembling the door 2 is further improved, but also the appearance of the door 2 is improved since no screws are used when the door 2 is opened.

Further, the rod-shaped member 8 inserted into the approximately mouth-shaped space formed by the engagement of the metal fitting A4 provided on the front plate 5 and the metal fitting B7 provided on the inner plate 6 is made of a material having wave electromagnetic absorption properties. Therefore, even if radio waves leak from the engaging portions of the metal fittings A4 and B7, they can be absorbed by the rod-shaped member 8, so it is safe without radio waves leaking to the outside.

Furthermore, even if food particles or the like adhere to the inner plate 6 during cooking, the screws are not exposed on the inner plate 6, making it easy to clean and very convenient.

In addition, when the transparent window 11 of the door 2 breaks, the inner plate 6 can be easily attached and detached, so it can be replaced in a short time.

As is clear from the above description, the high-frequency heating device of the present invention includes a heating chamber provided in the main body, a door provided at the opening of the heating chamber so as to be openable and closable, and a door located at the inner outer peripheral edge of the door. The door is constructed by attaching an inner plate to a front plate, and the mounting structure is such that the front plate and the inner plate are each provided with metal fittings that form the chiyoke groove, and these metal fittings engage with each other. By holding the inner panel to the top panel, the door assembly time is shortened and work efficiency is improved, as well as eliminating the need for screws to attach the inner panel of the door to the metal fittings on the top panel. Even if cooking residue adheres to the inner panel of the door during cooking, it is convenient and easy to wipe clean.

In addition, since there is no need to attach the inner plate to the metal fittings on the front plate of the door with screws, it is easy to attach and remove the inner plate, and since there are no screws exposed when the door is opened, the high-frequency heating device has a good appearance. .

[Brief explanation of the drawing]

FIG. 1 is a side sectional view showing the main parts of the door of a high-frequency heating device showing an embodiment of the present invention, FIG. 2 is a side sectional view showing the heating chamber and door of a conventional high-frequency heating device, and FIG. FIG. 2 is a front sectional view of the door shown in FIG. 2, and FIG. 4 is a side sectional view showing the main parts of the door showing a conventional example of the present invention. 1...Heating chamber, 2...Door, 3...Chiyoke groove,
4...Metal fitting A, 5...Top plate, 6...Inner plate, 7...
Metal fitting B, 8... member.

Claims (1)

[Claims] 1. Consisting of a heating chamber provided in the main body, a door provided at the opening of the heating chamber so as to be openable and closable, and a chiyoke groove formed on the inner outer peripheral edge of the door, The door is constructed by attaching an inner plate to a front plate, and the mounting structure is such that the front plate and the inner plate are each provided with metal fittings that form a chiyoke groove, and these metal fittings are engaged with each other to hold the inner plate on the front plate. High frequency heating device. 2. The high-frequency heating device according to claim 1, wherein the inner plate is held on the top plate by inserting a rod-shaped member into the space formed by the metal fittings forming the chiyoke grooves engaging with each other. . 3. The high-frequency heating device according to claim 2, wherein the rod-shaped member is made of a material that absorbs radio waves.