JPS608566Y2 - High frequency heating device - Google Patents

Description

[Detailed Description of the Invention] The purpose of the invention is to improve the safety and usability of a high-frequency heating device equipped with a so-called pull-out door.

Conventionally, in heating cookers such as electric ovens, when the set is used in a low position such as placed directly on the floor, the door body held by the movable rail and fixed rail opens and closes in the depth direction of the heating chamber. Furthermore, a system in which a shelf on which heated objects are placed appears and disappears as the door body is opened and closed was considered to be very easy to use.

However, it is difficult to eliminate the play between the movable rail on the door body side and the fixed rail on the main body side, and especially when trying to configure the door body to be detachable, the play between the movable rail and the fixed rail is basically eliminated. It is necessary to provide a

For this reason, it has not been possible to use the above-mentioned pull-out type door body in a high-frequency heating oven, where a slight deviation of the door body has a large effect on leakage of radio waves from around the door body.

The present invention is intended to solve this problem, and one embodiment thereof will be described below with reference to the drawings.

1 to 8 show an embodiment of the present invention,
In Fig. 1, 1 is a cabinet, 2 is a heating chamber, 3 is a waveguide that supplies high frequency energy to the heating chamber 2, 4 is a heater for heating the heater, and 5 is a door body that opens and closes the opening of the heating chamber 2. , 6 is a shelf that holds a rotary mounting table 7 for placing a heated object, which is remotely driven from outside the heating chamber 2 by magnetic force, and is locked to the door body 5 in a self-sealing manner, and when the door body 5 is opened and closed. and appears from the heating chamber 2.

8 is an operation panel. Figure 2 shows the main body 9 including the heating chamber 2 taken out from the cabinet 1.
In the figure, 10 is a bottom plate on which the heating chamber 2 and high voltage transformer 11 are placed and supported. Below the bottom plate 10, a rail mounting plate 12 is fixed with screws. A pair of fixed rails 13 are attached to the rail mounting plate 12 with screws. It's stopped.

14 and 15 are a reinforcing plate A and a reinforcing plate B for reinforcing the rail mounting plate 12, respectively.

Reference numeral 16 denotes a pair of movable rails attached to the door body 5, which fit into the fixed rails 13 to slidably hold the door body 5.

16a is a pair of rollers made of rotatable ball bearings fixed to the movable rail 16; 17 is a tray for fixing the movable rail 16 and for receiving food scraps and other garbage generated in the heating chamber 2; and 18 is a tray. A pair of locking fittings lock the shelf 6, 11 is a magnetron, and 20 is a cooling fan for the magnetron 19.

FIG. 3 shows the cabinet 1 with the main body 9 taken out, and FIG. 4 shows how the main body 9 is held in the cabinet 1. A pair of U-shaped metal fittings that hold the main body 9 by fitting together. The metal fittings 21 are fixed to the cabinet 1 with screws, and the main body 9 and the cabinet 1 are It can be attached and detached by sliding it along.

5 to 8 are diagrams showing how the fixed rail 13 and the movable rail 16 are engaged, and 13a is a pair of rollers made of rotatable ball bearings similar to the movable rail roller 16a. is fixed.

The sliding of the movable rail 16 with respect to the fixed rail 13 is achieved by the fixed rail roller 13a rotating with its outer periphery in contact with the movable rail 16, and the movable rail roller 16a similarly rotating with its outer periphery in contact with the fixed rail 13. It is designed to run smoothly.

To prevent the door body 5 from rattling in the left-right direction, the pitch I in the width direction of the movable rails 13 fixed to each other via the tray 17 can be adjusted by loosening the fixing screws 17a between the movable rail 13 and the tray 17, and adjusting the end surface of the fixed rail roller 13a. This is done by adjusting the movable rail so that the end surface of the movable rail roller contacts the fixed rail.

Here, if the vertical play of the door body 5, that is, the vertical play between the movable rail 16 and the fixed rail 13, is basically reduced to zero, it will become what is called hell, and the parts such as the fixed rail 13 and the movable rail 16 may be slightly warped, etc. However, there is no margin at all, and sliding between the fixed rail 13 and the movable rail 16 becomes impossible due to even the slightest dimensional change or deformation.

Furthermore, it is actually very difficult to make delicate adjustments both horizontally and vertically.

Furthermore, if the door body 5 is to be freely attached and detached from the main body 9, some looseness is required so that the door body 5 can be attached and detached smoothly.

16b is a stopper formed by making a part of the movable rail 16 convex, and when the door body 5 is opened to the maximum extent, the stopper 16b hits the fixed rail roller 13a and the door body 5 cannot be opened any further.

16c is a rattle stopper in which a part of the movable rail 16 is convex in the opposite direction to the stopper 16b, and is formed in a chevron shape.
When the door body 5 is closed, the door body 5 is fitted into the fixed rail 13.
The vertical play of the door body 5 can be substantially reduced to zero, thereby preventing leakage of radio waves from around the door body 5 due to displacement of the door body 5.

Furthermore, since the backlash stopper 16c does not fit into the fixed rail 13 when the door body 5 is open, a vertical play S is ensured for smoothly opening and closing the door body 5.

FIG. 5 shows how the door body 5 is attached and detached. As is clear from this figure, when attempting to attach or detach the door body 5, the stopper 16b needs to overcome the fixed rail roller 13a, and therefore the movable rail 16 is inclined with respect to the fixed rail 13, but since there is play S when the door body 5 is opened as described above, it can be easily attached and detached.

As described above, the present invention makes it possible to effectively prevent the vertical movement of the door body 5, making it possible to put into practical use a high-frequency heating device equipped with a pull-out door.

As explained above, according to the present invention, the following effects can be expected.

(1) Vertical rattling of the door body can be suppressed, making it possible to prevent leakage of radio waves from around the door body.

(2) The rattling stop works when the door is closed and does not work when it is opened.There is some rattling between the movable rail and the fixed rail, so the door can be opened, closed, and removed smoothly and is easy to use.

+3) Related to <2>, even if some parts such as movable rails or fixed rails warp, they can still slide due to the loose play, and therefore production is easy because extremely high parts precision is not required. It is also highly durable.

(4) Rather than eliminating play over the entire sliding surface of the movable rail and fixed rail, the structure has a protrusion on a part of the movable rail and only this part brings the play closer to zero, which improves dimensional accuracy. You can easily minimize the play when closing the door body.

(5) Production is easy because there is no need to adjust the top and bottom of the door body.

(6) By integrally forming the rattling protrusion by, for example, cutting and raising a part of the movable rail made of a sheet metal material, the structure can be extremely simple and compact, and the cost can be reduced.

(7) Since the rattling prevention protrusion is chevron-shaped, when the door body is closed, even if the protrusion slightly hits the fixed rail when it is fitted, the fitting is carried out smoothly.

(8) In relation to +2>, the door body can be easily attached and detached.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a high-frequency heating device showing an embodiment of the present invention in an open and closed state, Fig. 2 is an exploded perspective view of the same essential parts and viewed diagonally from below, and Fig. 3 is a cabinet section of the essential parts. FIG. 4 is a vertical cross-sectional view of the same high-frequency heating device, and FIGS. 5 to 8 are a perspective view of
The figure shows the fitted state of the fixed rail and the movable rail of the same main part. 1...cabinet, 2...heating chamber,
4... Heater, 5... Door, 9...
...Main body, 10...Bottom plate, 12...Rail mounting plate, 13...Fixed rail, 16...
...Movable rail, 19...Curved magnetron.

Claims (3)

[Scope of utility model registration request] (1) A heating chamber equipped with a high-frequency heating means, a door body that opens and closes the heating chamber, a pair of movable rails fixed to the door body, and a pair of movable rails that fit into the movable rails to allow the door body to slide freely. a pair of fixed rails for holding the door body, and the movable rail is partially provided with a protrusion that reduces vertical wobbling of the door body with respect to the fixed rail when the door body is closed. heating device. (2) The high-frequency heating device according to claim 1, wherein the door body is detachable from the fixed rail. (3) The high-frequency heating device according to claim 1, wherein the protrusion is integrally formed with a movable rail.