JPS6127116Y2 - - Google Patents

Description

[Detailed description of the invention] This invention reduces costs by reducing the number of parts and man-hours by using the same spring that biases both the handle that is operated when opening and closing the door and the latch key that is linked to the handle. The purpose of this is to enable rationalization and increase the safety of the device.

The door of a conventional high-frequency heating device is provided with a handle that is operated when opening and closing, and a latch key that operates a latch switch that controls the generation of high-frequency waves. Each of these handles and latch keys was biased by a spring, and the handle was biased with the force necessary to return after operation, and the latch key was biased with the load necessary to operate the latch switch. However, in this case, two springs with different specifications are required, which complicates assembly work and increases costs, so there is a need for a handle mechanism with a simple and inexpensive structure.

The present invention solves the above-mentioned problems and provides a high-frequency heating device having a simple and inexpensive structure and a highly reliable handle mechanism.

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

A door 3 is attached to the front surface of the heating chamber 2 of the main body 1 so as to be openable and closable, and the door 3 has a handle 4 for opening/closing operation and a latch key 5 interlocked with the handle 4 incorporated therein. This latch key 5 is inserted into an opening 6 at the front of the heating chamber and operates a latch switch (not shown) inside the main body to control the generation of high frequency waves.

Next, in FIGS. 2 and 3, the rotation shaft 4a of the handle 4 is inserted into the opening provided in the cut-out portion 3a of the door 3, and the latch key 5 is rotatably attached to a metal fitting 6 attached to the inner wall of the door 3. It is attached by latch key pin 7. There are respective protrusions 4b near the two rotation shafts 4a of the handle, one of which abuts a protrusion 5c extending radially from the rotation shaft 5a of the latch key, interlocking with the movement of the handle 4. The other protrusion 4b is a spring 8 attached to the rotation shaft 5a of the latch key.
is biased by one end of the The other end of the spring 8 is biased against a protrusion 5b provided near the rotation axis 5a of the latch key. With the above structure, when the door is opened, when the handle 4 moves in the direction of arrow A, the latch key 5 moves in the direction of arrow B, operating the latch switch and stopping the generation of high frequency waves before the door 3 is opened.

The force of the spring 8 is such that the latch key 5 has enough load to operate the latch switch (400 to 500 g at the tip of the latch key in this example), and the handle 4
The return force of approximately 200g can be obtained at the tip of the handle 4.

As explained above, the present invention has a configuration in which the handle and latch key rotate in planes that are perpendicular to each other, and the rotational movement of the handle is directly converted into the rotational movement of the latch key, so that the latch mechanism can be miniaturized and simplified. Moreover, since both the handle and the latch key can be directly biased by the spring supported by the latch key's shaft support, the number of parts can be reduced, the spring can be used more efficiently, and the operation is reliable and reliable. improves.

Further, since there is no need to separately provide a support portion for the spring, processability and workability are improved, and overall costs can be reduced significantly.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a high-frequency heating device showing an embodiment of the present invention with the door open, FIG. 2 is a perspective view of a handle portion of the same essential part, and FIG. 3 is a sectional view of the same portion. 1...Main body, 2...Heating chamber, 3...Door, 4...
Handle, 5... Latch key, 7... Latch key pin, 8... Spring.

Claims (1)

[Scope of utility model registration request] A magnetron that emits high frequency waves into the heating chamber, a power source that supplies high voltage, and a door at the opening of the heating chamber.
In a high-frequency heating device equipped with a handle that is operated when the door is opened and closed, and a latch key that operates a latch switch that controls the generation of high-frequency waves, the inside of the door is moved so that the handle and the latch key rotate in a plane that is perpendicular to each other. The latch key is pivotally supported by each of the latch keys, and a protrusion extending radially through the rotation axis of the latch key is engaged with a protrusion provided on the handle to directly convert the rotational movement of the handle into the rotational movement of the latch key. A spring supported by the rotation axis of the latch key is interposed between the and the latch key, and positions near the rotation axis of the handle and the rotation axis of the latch key are biased by the same elastic body. Device.