JPS6017829Y2 - Door body of high frequency heating equipment - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a door body of a high-frequency heating device used in a high-frequency heating device.

There are various types of door bodies generally used in high-frequency heating devices, and a typical example is shown in FIG.

That is, a in the figure is a first frame body which has a punching part C facing the high-frequency heating chamber in the center and a standing wall d on the circumferential side. An inner barrier body e made of, for example, a transparent plastic plate is provided on the inner surface.

Further, an outer barrier body f made of, for example, a transparent plastic plate is provided on the outer surface of the first frame body a, and a door body cover j fitted into the standing wall d
is held on a frame body a.

Note that k is a back cover.

Further, on the inner circumferential side of the first frame body a,
A second frame body g having a U-shaped cross section is attached at a distance from and facing the standing wall d.

A plate-shaped seal plate is fixed to the outer surface of the second frame body g with fixing screws i in a centrally supported state, and the free end of the seal plate is connected to the standing wall of the second frame body g1. A choke cavity 1 having a predetermined opening distance, that is, a separation distance of approximately λ/2 with respect to the well-known wavelength λ of a high frequency wave, is formed at a distance d.

In addition, the inner barrier body e is sandwiched between a sheet plate and a partition body g, and the punching portion C blocks leakage high frequency waves, while the inner barrier body a is used to block oil that enters from the high frequency heating device side. Furthermore, the outer barrier body f prevents wires and the like from entering from the outside.

However, in this structure in which the choke cavity 1 is formed by the second frame body g having a U-shaped cross section, the portions for fixing the second frame body g and the inner barrier body e protrude inward. , the problem arises that the viewing area of the viewing window C is inevitably impaired and the viewing window C cannot be enlarged.

Furthermore, in a door body with such a structure, the head of the fixing screw i is exposed on the back side as shown in Figure 2, so the heated oil of the workpiece may be exposed to the screw hole or head of the fixing screw i. It is unsanitary because dirt and dirt tend to accumulate, and it is also difficult to clean.

This idea was devised in view of the above circumstances, and its purpose is to improve the visibility inside the high-frequency heating device by expanding the viewing area of the viewing window, and to create a hygienic and easy-to-clean system. The present invention aims to provide a door body for a high-frequency heating chamber.

An embodiment of this invention will be described below with reference to FIGS. 3 and 4.

In the figure, 1 is a first frame body, and this frame body 1 is formed of a metal member, and has a punching hole in the center consisting of a large number of small holes 3a facing the high-frequency heating chamber 2 of the high-frequency heating device. 3 and a standing wall 1a is formed on the circumferential side to form a frame body.

An inner barrier body 4 made of, for example, a transparent plastic plate is provided on the inner surface of the punching part 3 to block leakage high frequency waves, and the oil of the heated object heated in the high frequency heating chamber 2 is transferred to the punching part 3 side. is sealed to prevent dirt from entering.

Further, inside the standing wall 1a of the first frame body 1, a second frame body 5 formed of a metallic member is provided along the standing wall 1a.

The second frame body 5 is formed into a rectangular frame shape with an L-shaped cross section, and a support seat 7 having a stepped portion 6 on the base side 5b is integrally formed with the other side facing each other. It is set in.

The second frame body 5 is arranged with the side wall 5a spaced apart from and facing the standing wall 1a, and serves as a fixture screwed into the support seat 7 from the outer surface direction of the first frame body 1. It is screwed and fixed onto the first frame body 1 by fixing screws 8 .

Furthermore, when the second frame body 5 is fixed, the peripheral edge of the inner barrier body 4 is disposed within the spaced part of the stepped portion 6, and the second frame body 5 is fixed.
In addition to fixing the frame body 5, the inner barrier body 4 is sandwiched on the inner surface of the first frame body 1.

A choke cavity 12 with a hollow hole is formed in the space between the second frame body 5 and the standing wall 1a.

Furthermore, an outer barrier body 9 made of a transparent plastic plate is provided across the outer surface of the first frame body 1, like the inner barrier body 4 described above, and the punching portion 3 is viewed from the outside. This prevents foreign objects such as wire from entering.

The inner surface of the outer barrier body 9 is provided with recesses 8a corresponding to the positions for attaching the fixing screws 8 screwed into the frame body 1. The heads of the fixing screws 8 are located within these recesses 8a so that the heads of the fixing screws 8 are not visible from the outside.

That is, the outer barrier body 9 is silk-printed on a surface area other than the area facing the punching part 3. This silk-printed surface shields the fixing screws from visual inspection.

Note that the surface of the outer barrier body 9 facing the punching portion 3 is transparent.

The outer barrier body 9 is fixed onto the first frame body 1 by a rectangular frame-shaped side cover 10 which is a door cover fitted onto the first frame body 1.

That is, this side cover 10 is provided with engaging claws 10a on the inner circumferential surface of one side and a receiving portion 10b on the other side, and the outer barrier body 9 is held in place by the receiving portion 10b. The outer barrier body 9 is held between the outer barrier body 9 by supporting the peripheral edge and engaging the engagement receiving portion 1b provided at the end of the standing wall 1a with the engagement claws 10a.

In addition, in the figure, 11 is a back cover supported by the standing wall 1a, and 13 is a high frequency absorber.

Therefore, when assembling the door body configured in this way, first the back cover 11 is engaged with the standing wall 1a of the first frame body 1, and then the inner barrier body 4 is placed on the inner surface of the punching part 3. Place.

Thereafter, the first frame body 5 is placed on a predetermined portion of the inner surface of the first frame body 1, and then the fixing screws 8 are inserted from the outer surface of the first frame body 1 toward the support seat 7.
. . . and fix the second frame body 5 on the first frame body 1.

Then, at the same time as this second frame body 5 is fixed, the peripheral edge of the inner barrier body 4 is clamped by the step portion 6, and the inner barrier body 5 is positioned and fixed.

A predetermined choke cavity 12 is formed in the space between the standing wall 1a and the side wall 5a of the second frame body 5.
The basic structure of the door body is constructed.

Subsequently, the outer barrier body 9 is arranged at a predetermined position on the outer surface of the first frame body 1, and the side cover 10 is fitted onto the circumferential side of the first frame body 1 from the outer surface direction. ... engages with the engagement receiving portion 1b, and the peripheral edge of the outer barrier body 9 is held on the first frame body 1.

The assembly work is completed through these series of assembly steps.

In this way, the back surface of the assembled door body is a smooth surface without exposing the heads of the fixing screws 8, as shown in Fig. 5, and the heated object is heated. It is hygienic because it does not easily accumulate dirt, etc., and is extremely easy to clean.

Furthermore, the choke cavity 12 is formed using the entire second frame body 5, and the inner barrier body 4 is sandwiched and fixed between the second frame body 5 and the first frame body 1. Therefore, it is possible to eliminate the overhang of the second frame body 5 from the inside of the choke cavity 12, which is conventionally used as a finger.

Therefore, the see-through area of the see-through window can be expanded, and the high-frequency heating chamber 2 can be seen clearly.

In addition, since a separate component such as a seal plate can be used also in the second frame body 5, all aspects are simplified accordingly, and it is possible to improve assembly efficiency and promote assembly efficiency.

As explained above, according to this invention, it is possible to form a choke cavity and eliminate the protrusion of the second frame body, which is a problem when fixing the inner barrier body, and The area can be expanded.

Therefore, it is possible to improve the visibility of the high-frequency heating chamber.

Furthermore, since the second frame body is fixed with a fixture that is screwed into the first frame body from the outside surface, the head of the fixture is not exposed on the back side of the door body, and the heated cover is not exposed. It is possible to prevent the accumulation of oil, etc. from heated objects, is hygienic, and is extremely easy to clean.

Further, since the head of the fixture is covered by the outer barrier body provided on the outer surface of the first frame body, the head of the fixture is not exposed outside the surface, and the appearance is good.

In addition, the number of component parts is reduced compared to the conventional one, which makes it possible to simplify all aspects, improve assembly efficiency, and promote assembly efficiency.

[Brief explanation of the drawing]

Fig. 1 is a partial sectional view showing the structure of a conventional door body, Fig. 2 is an external view showing the back side of the door, Fig. 3 is a partial sectional view showing an embodiment of this invention, and Fig. 4 is an exploded perspective view thereof. Figures 5 and 5 are external views showing the back side thereof. DESCRIPTION OF SYMBOLS 1...First frame body, 1a... Standing wall, 3... Punching part, 4... Inner barrier body, 5... ...Second frame body, 8...
... Fixing screw (fixing tool), 9 ... Outer barrier body, 10.11 ... Side cover (door body cover).

Claims (1)

[Scope of utility model registration request] A frame-shaped first frame body having a punching part facing the high-frequency heating chamber of the high-frequency heating device in the center and a standing wall on the circumferential side, and an inner surface of the punching part of the first frame body. The choke cavity is formed between the inner barrier body provided in the first frame body and the standing wall provided along the inner side of the standing wall of the first frame body, and the cross section is approximately L-shaped and formed in a frame shape. a second frame body, which is screwed into the outer surface of the first frame body, and fixes the second frame body onto the first frame body, and clamps and fixes the inner barrier body onto the punching part. an outer barrier body provided over the outer surface of the first frame body, and a door body cover that is fitted into the first frame body and clamps and fixes the outer barrier body as it is fitted. A door body of a high-frequency heating device characterized by: