JPS59189592A - High frequency heater - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a high-frequency heating device, and more particularly, to a high-frequency heating device equipped with a so-called turntable that rotates cooked food during cooking to eliminate uneven heating. The purpose of this invention is to provide an economical high-frequency heating device by improving and downsizing the rotation transmission mechanism that transmits the rotational driving force.

Conventionally, a rotation transmission mechanism that transmits the rotational driving force of a motor to a rotating mounting table of a high-frequency heating device equipped with a so-called turntable, which rotates a cooking device during cooking to eliminate uneven heating, has been used as a means of a deceleration mechanism. This was done by combining gears and pulleys.

As a result, the structure becomes complicated and a large space is required, resulting in an increase in the size of the main body.

The present invention improves the conventional drawbacks such as "double series",
An embodiment of the present invention will be described below.

In FIG. 1, 1 is the main body, 2 is a time switch, 3 is a cooking start switch, 4 is a cooking lamp, 5 is a door, and 6 is a handle. Reference numeral 7 denotes a heating chamber formed within the main body 1, and a rotary mounting table 9 in the form of a disc is disposed on a bottom plate 8 of the heating chamber 7.

In FIG. 2, a magnetron 10 that supplies high frequency energy to the heating chamber 7 is disposed on the upper surface of the outside of the heating chamber.

Further, a motor 11 that serves as a drive source for rotating the rotary mounting table 9 inside the heating chamber is disposed at the rear outside of the heating chamber 7, and a pulley A13 for transmitting rotation is attached to the motor shaft 12. There is.

In general, the appropriate number of rotations of the rotary mounting table 9 in the heating chamber is several times to several times. Therefore, the rotary drive of the motor 11 is made into two stages, which is a feature of the present invention.
The rotor pulley D is decelerated at 18 and is installed on the outside bottom of the heating chamber.
20.

A bearing stand 25 that supports the tips of the motor 11 and the motor shaft 12 is attached to the fixing bracket B14, and a pulley B17.
, a rotating shaft 15° 16 for pivotally supporting a pulley C18 is also attached. A rotating shaft 19 for pivotally supporting the boot 1JD20 is attached to the heating chamber bottom plate 8.

By the way, the rotary mounting table 9 has a plurality of rollers 21 and magnets 22 arranged in a circumferential manner at the lower part of its periphery, and is rotatably placed on the bottom plate 8 by the rollers 21.

Moreover, the boo IJD facing the magnet 22 of the rotary mounting table 9
A plurality of magnets 23 and rollers 24 are arranged circumferentially in the 2'O portion, and an attractive force acts between these magnets.

When the pulley D2o rotates, the rotary mounting table 9 is driven to rotate by its magnetic coupling means.

In the above configuration, when the motor 11 is driven, the pulley A12, which is a rotation transmission device, and the pulley B17, which is a two-stage pulley,
．． The pulley C18 is driven to rotate at a reduced speed via the belt A26°B27' and the belt C28, and as a result, the rotary mounting table 9 is smoothly rotated by the magnetic coupling means of the magnets 22 and 23. .

Instead of using a gear-based deceleration method, which has a complicated mechanism and requires a gearbox as a storage case, we changed the speed reduction method to a two-stage pulley.
By using only a pulley as a deceleration method, the structure became simpler and it could be installed even in a small space.

In Figure 3, since the motor 11, the boolean IJ B 17, and the pulley C18 are arranged on the 14 fixing metal fittings, it is possible to promote the unitization of parts, and as a result, the workability during assembly is improved. In addition, since the quality is checked at the time of unit production, defects can be detected at an early stage, leading to fewer defects in the market.

Because a belt is used to transmit rotational drive,
If dirt or cooking material adheres to the heating chamber bottom plate 8 and the rotary mounting table 9 stops rotating, slipping occurs between the pulley and the belt, and it is possible to prevent the drive motor 11 from seizing due to this slipping. This also leads to increased durability of the motor.

As explained above, the deceleration transmission device jd from the drive source motor 11 to the rotating body IJD 20 can be made smaller and improved to a high quality one, and as a result, an economically efficient high frequency heating device can be realized. I was able to provide it.

[Brief explanation of the drawing]

FIG. 1 is an external perspective view of a high-frequency heating device showing an embodiment of the present invention, FIG. 2 is a sectional view showing the internal structure of the device, and FIG. 3 is an enlarged view of a rotation transmission device section. 11...Motor, 13...Pulley, 1
4...Fixing metal fittings, 17, 18.20...
Pulley, 26,. 27...Belt. Name of agent: Patent attorney Toshio Nakao and 1 other person 1st
figure

Claims (1)

[Claims] A freely rotatable rotating body equipped with a magnetic coupling means is provided close to the outside bottom of the heating chamber, a rotary mounting table magnetically driven by the magnetic coupling means is provided on the bottom side of the heating chamber, and the rotating body is driven by a motor. 1. A high-frequency heating device, which is driven by a belt from a power supply, the deceleration means for the motor described in (1) is comprised of a pulley via the belt, and the rotary transmission device is miniaturized by using two stages of the gears.