JPH089536Y2 - High frequency heating equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a high-frequency heating apparatus having a door using a curved glass finder cover.

2. Description of the Related Art A door is attached to the opening of a heating chamber of a high-frequency heating device so as to be openable and closable, but the door has generally been manufactured linearly. Recently, the doors are also required to have design characteristics, and those having curved surfaces are being made.

From the viewpoint of heat resistance, glass is used as the finder cover that has been curved, but with the usual manufacturing method in which molten glass is poured into the mold, the cost of the mold and other costs are too high. However, the method of using the mold has a problem that it is difficult to respond to a quick model change for responding to the recent rapid changes in lifestyle.

On the other hand, if the method of softening the flat plate glass to the point of melting and moving it on the roller conveyor for curved glass production is adopted, it is possible to easily and inexpensively produce curved glass, but on the other hand, the peripheral edge of the glass There is a problem that waviness is unavoidable. For this reason, there is a drawback in that the method of locking the peripheral edge of the corrugated glass may be much more complicated and difficult than in the case of curved glass made by using a mold.

Means for Solving the Problems The present invention has been made to solve the above-mentioned drawbacks, and includes a heating chamber, a door that opens and closes the heating chamber, a metal door base that constitutes the door, and the door. A viewfinder cover made of curved glass provided on the outside of the base,
The door base and the plastic frame that forms the outer contour of the curved glass finder cover, and the plastic frame that is integrally projecting inside the plastic frame and part of it that surrounds the finder cover. A high-frequency heating device was configured with a plurality of flexible locking pieces for fitting and locking.

Action As configured above, even in the case of a glass finder cover in which undulations occur at the peripheral edge, the locking piece flexibly adapts to the undulation and engages with the peripheral edge of the finder cover while causing deformation, A rigid glass finder cover is stably held inside the plastic frame.

Embodiment The structure of the embodiment is as shown in FIGS. 1 to 8. Reference numeral 1 is a main body of the high frequency heating apparatus, and 2 is a heating chamber thereof.
Reference numeral 3 is an opening of the heating chamber, and the door 4 closes the opening 3 of the heating chamber with a rotating shaft 5 in a loving manner. The door 4 has a metallic door base 6 as a structural base, and a cavity 7 for attenuating radio waves is formed in the peripheral edge of the door base 6 so as to come into contact with the heating chamber peripheral edge 8. A central portion of the door base 6 forms a finder 9 including a group of small holes. Reference numeral 10 is a plastic choke cover that prevents foreign matter from entering the cavity 7. Reference numeral 11 denotes a plastic frame body forming the outer wall of the door, which is made of heat-resistant polyethylene terephthalate mixed with glass fiber. As is clear from FIG. 1 and FIG. 2, the outermost edge of the frame body 11 is formed so as to be gently curved toward the outside when the apparatus body is viewed from above. Reference numeral 12 is a window frame portion in which a portion corresponding to the finder of the door base 6 is omitted, and a curved glass finder cover 13 is provided inside the window frame portion.
Is fitted. Reference numeral 14 denotes a flexible member that is integrally formed with the frame body 11 at a plurality of positions inside the window frame portion of the frame body 11 along the curved surface and that locks the peripheral edge of the curved glass finder cover 13. It is a stop. A recess 15 is engraved in the hem portion of the locking piece, and the peripheral edge of the glass plate is cut into and held by the recess.

As shown in FIG. 2, the height of the locking piece 14 is different depending on the place, that is, the central portion of the door frame 11 is made higher when the curved glass 13 is fitted. This is because the top end of the locking piece 14 is brought into contact with the door base 6 so that the frame body 11 is stretched with respect to the door base 6 and the rigidity of the entire door is increased.

4 to 8 show a locking piece 14 provided on the frame body 11.
4 is a perspective view of the locking piece 14, and FIG. 5 shows the locking piece 14 with respect to forces in various directions. The figure shows how it deforms flexibly. FIG. 6 shows the locking piece 14
However, FIG. 7 shows a state in which the peripheral edge of the finder cover 13 in which no waviness is observed on the peripheral edge is held in the recess 15 of the hem without being forced to be deformed, FIG.
A view showing a state in which the peripheral edge of the finder cover 13 in which the peripheral edge is wavy is held in the recess 15 at the hem by the locking piece 14 deforming in the direction of the arrow, and FIG. 8 is a view of FIG. 7 viewed from the direction of the arrow AA.

Since the embodiment of the present invention is configured as described above, when the finder cover 13 having waviness at the peripheral edge and not forming the peripheral edge having a uniform curvature is attached, it is appropriate. The locking pieces 14, 14 of accord with the waving and are bent and deformed as shown in FIGS. 7 and 8 to engage with the peripheral edge of the finder cover 13 and be stable inside the door 4. Attach and hold the finder cover 13 with.

Effects of the Invention According to the present invention, even if the peripheral edge of the curved glass finder cover is wavy, the locking piece inside the door frame can be flexibly deformed while the peripheral edge is deformed. Since it is now possible to lock the finder cover, it is possible to easily use a finder cover made of curved glass having relatively poor dimensional accuracy.

[Brief description of drawings]

FIG. 1 is an external perspective view of the device of the present invention, FIG. 2 is a sectional view of a door portion, FIG. 3 is an enlarged sectional view of a main part of a door, and FIG. 4 is a perspective view of a locking piece provided on a door frame. FIG. 5 is a perspective view showing how the locking piece is deformed, and FIG. 6 is a perspective view showing how the locking piece holds the peripheral edge of the finder cover without deformation. FIGS. 7 and 8 are views showing a state in which the peripheral edge of the viewfinder cover, which is wavy, is held by being greatly deformed, and FIG.
It is an AA arrow line view of a figure. 2: Heating chamber, 4: Door, 6: Door base, 11: Plastic door frame, 13: Curved glass viewfinder cover, 1
4: Locking piece integrally molded on the door frame, 15: Recess.

Claims (1)

[Scope of utility model registration request] 1. A heating chamber (2), a door (4) for opening and closing the heating chamber, a metal door base (6) constituting the door, and a curved glass provided outside the door base. Finder cover (13) made of plastic, a frame (11) made of plastic that forms the outer wall of the door base and the curved finder cover made of curved glass, and integrally projects with the frame inside the frame made of plastic. A plurality of flexible locking pieces (14, 14, ...
・) A high-frequency heating device, characterized in that