JPS621605Y2 - - Google Patents

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 that is compact by reducing the size of the interlock bracket provided on the main body of the high-frequency heating device.

Conventionally, this type of high-frequency heating device is provided on the inside of a door of a high-frequency heating device main body 1, as shown in FIG. an interlock bracket 4, an interlock switch 5 installed in the interlock bracket and interlocked with the engaging hook, and an interlock switch 5 installed in the interlock bracket 4 that slides horizontally when pressed by the hook 2. a slider 6 and an interlock monitor switch 7 linked to the slider 6.
and a spring 8 that always biases the slider 6 toward its original position.

However, in the high-frequency heating device configured as described above, since the slider 6 that operates the interlock monitor switch 7 moves horizontally, the depth 1 of the interlock is at least the insertion length of the engagement hook 2 plus the length of the slider 6. This has the disadvantage that the interlock bracket has to be larger than a certain depth, which increases the size of the interlock bracket, which increases the manufacturing cost of the parts. In addition, as the interlock bracket becomes larger, the arrangement of the oscillation power supply components and control components of the high frequency heating device placed near it is restricted, resulting in a crowded arrangement of each component.
New members are required to ensure the insulation distance between each component, which has the drawback of increasing component costs and assembly costs due to the addition of components.

Furthermore, since the slider 6 moves horizontally, the mounting direction of the interlock monitor switch is limited to the horizontal direction, and the size of the switch and the mounting position of the terminal are also limited, so there is less room for selection of the switch. Another disadvantage of the design was that it was extremely narrow.

The purpose of the present invention is to provide a high-frequency heating device that eliminates the above-mentioned drawbacks, and the purpose is to reduce the size of the interlock bracket by operating the interlock monitor switch with an eccentric rotating body linked to the hook. It is.

Embodiments of the present invention will be described below with reference to the drawings.

In FIGS. 2 and 3, reference numeral 10 is a high-frequency heating device main body, and a door 11 is attached to the front surface of the high-frequency heating device main body 10 so as to be openable and closable. A handle 12 is provided on the outside of the door 11,
An engagement hook 1 that interlocks with the handle 12 is located inside it.
A pair of 3 are provided.

On the other hand, an interlock bracket 15 is provided on the high frequency heating device main body 10 corresponding to the engagement hook 13 of the door 11. The interlock bracket 15 is fitted with an engageable latch 14 in contact with the engagement hook 14 on the front side.

An interlock switch 16 is disposed below the interlock bracket 15. The interlock switch 16 is positioned so as to be able to engage with the tip projection (hook part) of the engagement hook 13, and the interlock switch 16 is operated by this engagement.

Further, an eccentric rotating body 18 is provided within the interlock bracket 15 so as to be freely rotatable about the support shaft 17. The eccentric rotating body 18 is molded from a synthetic resin such as nylon or a metal material, and has a hook receiving piece 20 protruding from its outer periphery. The hook receiving piece 20 is capable of engaging with the tip of the engaging hook 13. When the hook receiving piece 20 engages with the engaging hook 13 and is pressed thereby, the eccentric rotating body 18 is rotated against the spring force of the tension spring 22. This rotation operates the interlock monitor switch 19. An interlock monitor switch 19 is disposed on the back side of the interlock bracket 15.

In addition, the tension spring 22 is connected to the coil locking piece 21.
and the interlock bracket 15. The coil locking piece 21 is projected from a predetermined position on the outer circumference of the eccentric rotating body 18. Coil locking piece 2
1 is located on the left side of the hook receiving piece 20 in FIG.

In addition, Fig. 4 shows the electric circuit of the door opening/closing part, and in the figure, numeral 23 is a high frequency heating circuit, numeral 24 is a control unit, numeral 25 is an AC power supply, numeral 26 is a fuse, and numeral 27 is a voltage transformer. vessel, code 28
indicate high-frequency oscillation tubes, respectively.

Next, the interlock operation of the high frequency heating device will be explained.

As shown in FIGS. 2 to 4, when the door 12 of the high-frequency heating device main body 11 is open, the eccentric rotating body 16 rotates due to the tension of the tension spring 20, but the rotation is prevented by the hook receiving piece 20 being latched. 14
The position of the hook receiving piece 20 at this time is shown by the broken line in FIG. 2.

When the door 12 of the high-frequency heating device main body 11 is closed, the hook 13 that is linked to the handle of the door 12 is closed.
is inserted into the interlock bracket 15.
At this time, the hook 13 first
is pressed to rotate the eccentric rotating body 18, and the interlock monitor switch 19 is operated by the deflection caused by the rotation of the eccentric rotating body 18, after which the hook receiving piece 18 moves to the position shown in the solid line in FIG. Then, the tip of the hook 13 is engaged with the latch 14, and the interlock switch 16 is operated.

The operation of the interlock monitor switch 19 and the interlock switch 16 will be explained using the electrical circuit of the high frequency heating device shown in FIG.
The interlock monitor switch 19 is turned OFF as shown by the broken line, and the interlock monitor switch 1
6 is turned on as shown by the dotted line, and a current controlled by the control section 24 flows through the high frequency heating circuit 23, causing the high frequency heating circuit 23 to work.

Conversely, when the door 12 is opened and the hook 13 is removed from the interlock bracket 15, the eccentric rotating body 16 is rotated by the tension of the tension spring 22 and returns to its original position, and the interlock switch 16 and the interlock The lock monitor switch 19 returns to its original state, the interlock switch 16 is turned OFF, and the interlock monitor switch 19 is turned ON, as shown by the solid line in FIG. Heating circuit 23 does not work.

As explained above, the high-frequency heating device of the present invention includes an engaging hook provided on the door, an interlock bracket provided on the main body of the high-frequency heating device corresponding to the engaging hook, and an interlock bracket provided on the bracket. an interlock switch that is operated by engaging with the hook; an eccentric rotating body that is rotatably provided on the interlock bracket and rotated by engaging with the hook; and an interlock switch that is operated by the rotation of the eccentric rotating body. The interlock monitor switch has an interlock monitor switch, and since the eccentric rotor is biased by a spring in the direction of pushing back the engagement hook, the interlock monitor switch can be operated by rotating the eccentric rotor, and the interlock monitor switch can be operated by rotating the eccentric rotor. The depth of the interlock bracket can be reduced compared to a structure in which a slider is used and the interlock monitor switch is operated by the slide. Therefore, the interlock bracket can be made smaller,
It can be made compact, which has the effect of reducing the manufacturing cost of parts.

Furthermore, the high-frequency heating device of the present invention can achieve
A large interlock monitor switch with a large capacity can be placed in the interlock bracket without taking up much space, and the terminals of the interlock switch can be positioned in each direction, giving you more flexibility in the design of the switch. It has an extremely large effect.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view of an interlock bracket of a conventional high-frequency heating device, Fig. 2 is a longitudinal cross-sectional view of an interlock bracket of a high-frequency heating device of the present invention, and Fig. 3 is a vertical cross-sectional view of an interlock bracket of a high-frequency heating device of the present invention. FIG. 4 is an electric circuit diagram of the high-frequency heating device of the present invention. 10... High frequency heating device main body, 11... Door, 1
2...Handle, 13...Hook, 15...Interlock bracket, 16...Interlock switch, 18...Eccentric rotating body, 19...Interlock monitor switch, 22...Tension spring.

Claims (1)

[Scope of utility model registration request] An engagement hook provided on the inside of the door, an interlock bracket provided on the main body of the high frequency heating device corresponding to this engagement hook, and an interface provided on this bracket that is operated by engaging with the hook. a lock switch, an eccentric rotating body rotatably provided on the interlock bracket and rotated by engaging with the hook, and an interlock monitor switch operable by rotation of the eccentric rotating body, A high-frequency heating device characterized in that the eccentric rotor is biased by a spring in a direction to push back the hook.