KR960007557B1 - Microwave oven door - Google Patents

Abstract

In the microwave oven door locking device installed on a front part of a main body to close a cooking chamber, the device includes a door; a first shaft rotatably disposed in the main body; a second shaft rotating about the first shaft; a rotating member having first and second locking projections and rotating forward and reverse about the shaft when the door is opened and closed; a first shaft hole into which the rotating member's first shaft is fit; a bracket with a slit; and an operating bar having a rotatably supported protruding piece of the main body, elastically supported by a spring and joined to a second shaft hole ito which a second shaft is fit.

Description

Microwave Door Locking Device

1 is a perspective view of a typical microwave oven with the door open.

2 is a cross-sectional view schematically showing the internal structure of FIG.

(A), (b) of FIG. 3 is a principal part figure for demonstrating the door lock apparatus of the conventional microwave oven.

Figure 4 is an exploded perspective view showing the main configuration of the door locking device of the microwave oven according to the present invention.

Figure 5 is a view showing the rear structure of the rotating member applied to the door locking device of the present invention.

6 (a) and 6 (b) are views for explaining the operating state of the door locking device shown in FIG.

* Explanation of symbols for main parts of the drawings

1: door 1a: hook

1b: hinge 1c: spring

15: bracket 15a: locking jaw

16: door open button 16a: spring

17: meeting part 17a: hinge

18: rod 20: rotating member

20a: Flange 20b: Notch Groove

20c: first jamming protrusion 20d: second jamming protrusion

21: 1st axis 22: 2nd axis

23: locking lever 23a: protrusion bar

23b: hinge 24: torsion spring

25 bracket 25a first shaft hole

25b: notch groove 25c: guide groove

25d: Jaw Jaw 25e: Support Piece

26: operating rod 26a: second shaft hole

27: spring 28: protrusion

The present invention relates to a microwave oven, and more particularly, a door which is mounted on the front of the main body and is opened and closed by a simple configuration without a separate member such as a door open button and the like so as to enable locking or releasing operation by itself.

A typical microwave oven is a heating chamber 3 for heating food F inside a main body 2 of a rectangular body having a door 1 on the front side as shown in FIGS. 1 and 2, and this heating. The drive chamber 4 for supplying high frequency or heater heat into the chamber 3 is separated by the inner panel 5.

In the heating chamber 3, a tray 7 on which the food container 6 is placed and a tray motor 8 for rotating the tray 7 at a low speed are mounted. (9) is installed.

In the drive chamber 4, a magnetron 10 and a high voltage transformer 11 for generating high frequency, and a cooling fan 12 for cooling them are provided, and a control panel mounted on the upper side of the main body 2. At 13, function selection buttons are formed so as to be connected in a circuit configuration.

Accordingly, when the microwave oven is operated, the high frequency oscillated from the magnetron 10 is guided into the heating chamber 3 through the waveguide 14 and dispersed in the food F according to the user's menu setting. In this case, the food F on the tray 7 is rotated at a low speed so that the high frequency is evenly distributed.

In the microwave oven having the function as described above, an apparatus for locking and releasing the door 1 mounted on the front surface of the main body 2 is generally shown in FIGS. 1 and 3 (a) and (b). As described above, the door 1 is provided with a pair of hooks 1a (only one of which is shown in FIG. 3) which is elastically installed by the spring 1c so as to flow around the hinge 1b. When closing the hook (1a) is guided into the main body 2 and at the same time is engaged with the engaging piece (15a) formed in the bracket 15 inside the door (1) can maintain the locked state.

In addition, when the door 1 is to be released, it is elastically moved by the spring 16a as the door open button 16 mounted on the lower portion of the control panel 13 is pressed. The rod 18 is moved upward while the counter 18 rotates counterclockwise around the hinge 17a, so that the hook 1a of the door 1 is detached from the locking piece 15a so that the door 1 is locked. It is configured to release the state.

However, the door locking device has a complicated structure because the pair of hooks 1a mounted on the door 1 must be elastically flown, and the door open button 16 can release the locking state through the interlocking parts. Therefore, not only the product productivity is lowered, but also the cost of the product is increased, and furthermore, there is a problem that the operation by various interlocking parts is not properly performed.

The present invention is to solve the conventional problems as described above, by fixing a pair of hooks mounted on the door without flow, and by allowing the locking device mounted in the main body to operate itself, The door open button or other interlocking parts of the product can be simply singled out so that the operation can be done correctly, and the product productivity can be further improved. The purpose of the present invention is to provide a door lock device for a microwave oven, which can reduce the production cost with water. There is this.

Features of the present invention for achieving the object as described above, for locking and releasing the door installed on the front of the main body to lock and release the door is installed in the front of the main body to seal the heating chamber constituting the microwave oven. An apparatus comprising: a door fixed to a pair of hooks at an upper side of an inner side of a door so as not to flow at a predetermined interval; And a rotating member for locking and releasing the hook by elastically forward and reverse pivoting about the first shaft, and a first shaft hole into which the first shaft of the rotating member is fitted. Consisting of brackets each having different notches and guide grooves formed therein; A latching lever having a protruding rod on one side of the rear side of the rotating member is elastically mounted by a spring to expose the protruding rod to the front of the cutout groove formed in the rotating member; A second shaft is formed on the side of the first shaft formed on the rear surface of the pivot member, and first and second locking projections are further formed at a predetermined position on the front surface; An actuating rod which is elastically moved at a predetermined angle by a spring is installed at the rear of the bracket, and a second shaft hole is formed on the actuating rod so that the second shaft of the rotating member is fitted with the notch groove of the bracket interposed therebetween. The upper end of the operating rod is in the door locking device, which is supported by the spring force on the support piece formed on the rear side of the bracket to guide the movement.

Hereinafter, a preferred embodiment of the door lock device for a microwave oven according to the present invention will be described in detail with reference to the accompanying drawings.

4 to 6 are views for explaining the door locking device of the present invention, first installed in the front of the main body 2 to seal the heating chamber constituting the microwave oven, the door 1 has a pair of hooks (1a) ) (Only one side in the drawing) is fixedly installed so as not to flow at a predetermined interval.

In addition, in the main body 2 corresponding to the hook 1a of the door 1, when the door 1 is opened and closed, the hook 1a is locked by reversing and reversing elastically by the forward and backward movement of the hook 1a. And a rotating member 20 for releasing.

As shown in FIGS. 4 and 5, the rotating member 20 has a flange 20a formed at an upper edge thereof, and has a predetermined distance from the first shaft 21 and the first shaft 21 formed at the center of the rear surface thereof. The second shaft 22 is protruded on one side and the locking lever 23 having the protruding rod 23a toward the front side is elastically by the torsion spring 24 about the hinge 23b. Is mounted.

In addition, a cutout groove 20b is formed at one side of the front surface of the pivot member 20 so that the protruding bar 23a of the locking lever 23 is inserted and exposed, and the first bar is spaced around the protruding bar 23a at a predetermined interval. And second catching protrusions 20c and 20d are protruded, respectively.

Meanwhile, a first shaft hole 25a in which the first shaft 21 of the rotating member 20 is fitted is formed in the bracket 25 inside the main body 2 on which the rotating member 20 is mounted. Notched grooves 25b and guide grooves 25c having different centers around the single shaft hole 25a are formed to have a predetermined length, and a locking jaw 25d is formed on the upper side thereof.

In addition, the operating rod 26 is inclined at a predetermined angle on one side of the rear surface of the bracket 25, and the notched groove 25b formed in the bracket 25 by the second shaft hole 26a formed above the operating rod 26. The second shaft 22 of the rotation member 20 is fitted with the between them.

In addition, a spring 27 is fitted to the outer circumference of the operating rod 26 to be held between the protrusion pieces 28, and an upper end of the operating rod 26 protrudes from the cutout groove 25b to the rear side. It is elastically supported by the formed support piece 25e, and is comprised so that guide movement may be carried out.

According to the present invention configured as described above, when the door 1 is closed for cooking in the state where food F is placed in the heating chamber 3 of the microwave oven as shown in FIG. The hook la of the door 1 moves in the horizontal direction and is inserted into the main body 2 while pushing the first locking projection 20c on the pivot member 20 mounted on the bracket 25 in the main body 2. Given.

Accordingly, the pivot member 20 is rotated clockwise around the first shaft 21, and at this time, the hook lever 1a is caught by the latch lever 20 in which the tip of the pivot member 20 is exposed to the notch groove 20b on the front surface of the pivot member 20. Since it is elastically pressurized to the protruding rod 23a of the), the end of the locking lever 23 is not caught by the locking jaw 25d on the bracket 25, and the flange 20a on the upper side of the rotating member 20 is the bracket 25 It rotates along the guide groove 25c formed in the).

Here, the locking lever 23 is installed so that the rotation member 20 is accurately operated only by the hook 1a of the door 1 without causing a malfunction, and the protruding bar 23a of the Jilin lever 23 If you do not push the) rotating member 20 is not able to operate.

In addition, since the second shaft 22 on the rear surface of the pivot member 20 also moves clockwise within the cutout groove 25b of the bracket 25, the operating rod 26 fitted to the second shaft 22. The upper end of the guide) is guided and moved in a state in which it is elastically in close contact with the support piece 25e of the bracket 25 by the spring 27.

Therefore, the operating rod 26, which is applied with the spring 27, changes the direction of action of the force applied to the rotating member 20, and the rotating member 20 rotates clockwise by this force. . By this operation, as shown in (b) of FIG. 6, the hook 1a of the door 1 is coupled to the second locking protrusion 20d of the rotation member 20, so that the door 1 remains locked. .

On the other hand, in order to release the locked state of the door 1, as described above, when the door 1 is pulled outward without using a separate door open button as in the related art, by the hook 1a As the second catching protrusion 20d of the rotating member 20 is pulled, the rotating member 20 rotates counterclockwise about the first shaft 21.

Therefore, the operating rod 26 on the rear surface of the bracket 25 moves in a state in which it is elastically in close contact with the support piece 25e of the bracket 25 by the spring 27, and the predetermined position (the center line of the operating rod The direction of action of the force at the side by side) is reduced to the initial state as in FIG. 6 (a), that is, to give the force to rotate the rotating member 20 counterclockwise. The locking state can be released.

In the above-described embodiment has been described with respect to the preferred embodiment of the present invention, the present invention can be modified appropriately within the scope of the same idea in addition to these embodiments.

As described above, according to the door lock device of the microwave oven according to the present invention, by fixing the hook to be mounted on the door so as not to flow, and by the hook to operate the locking device inside the main body by itself, a separate The door open button or other interlocking parts can be singulated to provide accurate locking and releasing operations while improving product productivity.

Claims (3)

In the device for locking and releasing the door installed on the front of the main body to seal the heating chamber constituting the microwave oven, the door is fixed so that a pair of hook (1a) is fixed at a predetermined interval on the inner side of the upper surface (1) and; The first shaft 21 which is rotatably fixed in the main body 2, the second shaft 22 that rotates about the first shaft 21, and the first locking stone that interferes with any one hook 1a. Rotating member 20 which is provided with the unit 20c and the second locking projection 20d integrally and locks and releases the hook by reversing and reversing elastically about the first shaft 21 when the door 1 is opened and closed. Wow ; A first shaft hole 25a into which the first shaft of the pivot member 20 is fitted, and a bracket 25 having cutout grooves 25b respectively allowing rotation of the second shaft around the first shaft hole 25a; ; The spring 27 is supported against the rotatably supported projecting piece 28 of the main body 2 to elastically move in the longitudinal direction, and is coupled to the second shaft 22 passing through the notch 25b at the upper end thereof. Door lock device for a microwave oven consisting of a working rod 26 is formed a two-axis hole (26a). The front end of the hook (1a) according to claim 1, wherein the spring (24) is elastically mounted on one side of the rear side of the pivot member (20) and exposed to the front of the cutout groove (20b) formed in the pivot member (20). And a locking lever (23) having a protruding rod (23a) interfering with the door. The door locking device according to claim 1, wherein the upper end of the operating rod (26) is guided in pressure contact with the support piece (25e) formed on the rear surface of the bracket (25) by spring force (27).