JPS598085Y2 - microwave door latch device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a door latching device for a microwave oven, and is intended to reduce the number of parts of the latching device.

Generally, in a door latch device for a microwave oven, as shown in FIG.
A set screw (not shown) is inserted into the microwave oven body (not shown) and fixed to the microwave oven main body (not shown).A sliding lever 5 is held between the front edge 3 and the rear edge 4 of the microwave oven body and can be slid in the vertical direction. When the sliding lever 5 is deflected downward, the door switch 6 is biased at the operating piece 5a of the sliding lever 5, and furthermore, the sliding lever 5 is at its lower end engaging portion 5b. It is associated with the door opening operating body 6, and by pressing the door opening operating body 6 downward on the outside of the microwave oven main body with its operating part 6a, the door opening operating body 6 is rotated about its pivot shaft 7. The working end 6b rotates clockwise.
An interlocking rod 8 inserted and supported by the latch board 1 moves upward, and the sliding lever 5 is biased upward by the interlocking rod 8, and as shown in FIG. The door latch 10 is received in the latch receiving box 9 which is integrally formed, and the sliding lever 5 is urged downward, that is, in the locking direction by the clockwise rotation urging force of the door latch 10, and the door latch 10 itself is attached to the latch board. The door latch 10 is engaged with the lock latching part 11 of 1 to latch the door and the microwave oven main body to each other, and when the lock is released, the door latch 10 is engaged with the lock latching part 11 of the door latch 10. When the door latch 10 moves upward and its hook tip 10a is not pushed upwards from the locking part 11, the leaf spring 12, which is bridged over a corner part 9a of the latch receiving box 9 at its head 10b, The plate spring 12 is configured to make elastic contact with the plate spring 12 and be pushed out in the direction of the arrow X by the elastic force of the plate spring 12.

However, with this type of microwave oven door latch device,
There is a drawback that the number of parts and the number of man-hours are increased by the provision of the leaf spring 12.

This invention was made in view of this point, and one embodiment will be explained below.

In FIG. 3, reference numeral 13 indicates a door of the microwave oven, and reference numeral 14 is rotatably supported on the microwave oven door 13 at its pivot portion 15, and is biased clockwise, that is, in the locking direction, by a tension spring 16. The door latch 17 has a high-frequency heating chamber (not shown) formed therein, and the front opening of the high-frequency heating chamber is opened and closed by the door 13, the main body of the microwave oven, 18 a front plate, and 19 integrally made of resin. Shaped set screw 20. The latch substrates 21, 22, 23, and 24 fixed to the microwave oven body 17 at 20 are formed integrally with the latch substrate 19;
is the leading edge, 22. 22 is a rear edge, 23 is a locking portion, 24 is a door latch receiving box, 25 is a front edge 21 and a rear edge 22 . A sliding lever 28 which is held by the sheet 22 and which engages with a guide shaft 27 through a vertically extending through hole 26 and whose position is regulated by the guide shaft 27 and is movable a predetermined distance in the vertical direction; This is a door switch which is secured to the latch board 19 by screws 30 and 30, and is biased into contact with the operating piece 25a when the sliding lever 25 moves downward.

The sliding lever 25 is associated at its lower end with a door opening operating body 6 and an interlocking lever 8, which are shaped similarly to the conventional example.

In addition, in FIG. 3, the door opening operating body 6, interlocking lever 8, etc. are omitted.

Moreover, the sliding lever 25 is urged by the door latch 14, and the door latch 14 is automatically pushed in the door opening direction without providing the leaf spring 12 as in the conventional example.

Since this invention is constructed as described above, when the door is opened, the door latch is pushed out in the door opening direction by the inclined surface of the sliding lever, and therefore, there is no need for a leaf spring for pushing out the door latch as in the conventional example. The door can be opened by automatically pushing the door latch in the door opening direction.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a conventional example, Fig. 2 is a sectional view of a part of the conventional example, Fig. 3 is a sectional view of an embodiment of this invention, and Fig. 4 is an explanation of the operation of the main parts of the embodiment. It is a diagram. 6... Door opening operation body, 13... Door, 14... Door latch, 17... Microwave oven body, 25... Sliding Moving lever, 25a・
...For the time being of the sliding lever.

Claims (1)

[Scope of utility model registration request] The door is provided with a door latch that is biased in a locking direction, and the microwave oven main body is provided with a sliding lever that interlocks with the door latch and a door opening operation body that locks and releases the door latch via the sliding lever. and the sliding lever is biased in one direction when engaged with the door latch and biased in the other direction by the door opening operating body, at which time the door latch is pushed away and the lock is released. ,
A door latch device for a microwave oven, characterized in that the engaging surface of the sliding lever that engages with the door latch is inclined so that the engaging surface pushes the door latch in the door opening direction.