KR960005773B1 - Apparatus for automatically-opening door or tray of microwave oven - Google Patents

Abstract

The structure comprises a center guide(23) located at a fixed height on both wall of the cavity along the moving direction of the tray(12), the upper and lower guides(22)(24) located at a fixed distance from the center guide(23), the main link(28) connected with the side of the tray(12) and the center guide(23), the upper and a lower auxiliary links(29)(30) connected with the main link(28) of center guide(23) via a hinge shaft(28A) and the upper or a lower guide(22)(24), the lower support(24A) connected with the inside of the door(10) and the lower auxiliary link(30), a pair of guide rail(40) installed on the both side of the cavity floor(45), a pair of guide slot(44) connected with the rail(40), and the guide rollers(27) installed on the floor(45) and supporting the tray(12).

Description

Automatic opening and closing structure of door and tray of microwave oven

1 is a schematic perspective view showing an open state of a door and a tray of a microwave oven according to the present invention.

2 is a side cross-sectional view of a door and tray automatic opening and closing structure according to the present invention.

Figure 3 is a partial cross-sectional perspective view showing the operation mechanism of the tray according to the present invention from the back.

4 is a plan view schematically showing the relative position of the tray and the bottom surface according to the opening and closing of the door and the tray of the present invention.

* Explanation of symbols for main parts of the drawings

10: Door 12: Tray

20: hinge guide 20A: hinge support

22: upper guide 23: center guide

24: lower guide 24A: lower support

25: tray guide 27: guide roller

28: Main link 29: Upper secondary link

30: lower auxiliary link 36: door lock

40: guide rail 40A: spring

42: stopper 44: guide ball

45: bottom surface

The present invention relates to an automatic opening and closing structure of a door and a tray of a microwave oven, and more particularly, to a door and a tray of a microwave oven that can be opened and closed automatically by a simple pressing of an open button when the door is opened or closed. It relates to an automatic opening and closing structure.

In general, the inside of the microwave oven is equipped with a turntable, press the open button or pull the handle to open the opening door, hold the food tray for cooking by hand, put it on the turntable, then press the door to cook in the closed state Will be done. When cooking is completed, open the door by pressing the open button or pulling the handle, take out the food and then press the door again to close the door. Cooking is cumbersome, and if there is an obstacle on the opening side of the door, the door may be damaged. There was a problem.

The present invention is to solve these problems, one side is fixedly coupled to the door hinge side and the other side is a hinge support inserted into the hinge guide; A lower support having one side fixedly coupled to the lower side of the door and the other side inserted into the lower guide; Upper guide; Central guide; And a tray guide, a buffer spring, and a guide roller, in which a locking jaw fits into the door lock moving hole and forms a door lock that is opened and closed by the door lock spring, so that the tray can be smoothly moved in and adjacent to both sides of the tray. Guide rails installed on the left and right sides of the floor and forming springs and spring balls; The guide rail is inserted and formed with a stopper and a guide hole in which a stopper support for supporting the stopper is formed on the tray and / or the bottom surface, the other end of the main link having one end fixedly coupled to the side surface of the tray. The other ends of the upper and lower auxiliary links, each of which is hinged to the main link in the center guide about the hinge axis, are inserted into the upper guide or the lower guide, respectively, so that the tray is in a sliding manner. The door is opened and closed, but the operation of the tray and the door can be integrated with the link system. When the door is opened or closed, the door and the tray are automatically opened and closed at the same time by simply pressing the open button, thereby simplifying the cooking operation and damaging the door. Doors and trays in a new type of microwave, which also significantly reduce the rate There is provided a structure such opening.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The present invention, as shown in Figures 1 to 3, a hinge support 20A is fixedly coupled to one side of the door hinge 21 side and inserted into the hinge guide 20; A lower support 24A having one side fixedly coupled to the lower side of the door 10 and the other side inserted into the lower guide 24; Upper guide 22; Central guide; And a door lock 36 in the door 10 in which the locking step 30a is fitted into the door lock moving hole 26B and opened and closed by the door lock spring 36C. A tray guide 25 and a buffer sprue 26 and a guide roller 27 to allow smooth entry and exit of the tray guide 25 and the guide roller 27; A guide rail 40 installed at the left and right sides of the bottom surface 45 and having a spring 40A and a spring hole 40B; The guide rail 40 is inserted into the guide hole 44 having a stopper 42 and a stopper support 42A for supporting the stopper is formed on the tray 12 and / or the bottom surface 45, The other end of the main link 28, one end of which is fixedly coupled to the side surface of the tray 12, is inserted into the center guide 23, and one end of the main link in the center guide 23 is centered on the hinge shaft 28A. The other ends of the upper secondary link 29 and the lower secondary link (30) hinged to the 28 has a feature that is inserted into the upper guide 22 or the lower guide 24, respectively.

As shown in FIG. 2, the door 10 is opened by the synergistic action of the lower support 24a, and one end of the lower auxiliary link 30 is adjacent to the end immediately after the lower support 24a. The other end of the lower auxiliary link 30 is hinged to the hinge shaft 28a of the main link 28, so that the tray 12 on the bottom surface 45 is the force of the spring 40a when the door 10 is opened. As the main link 28 fixedly coupled to the side of the tray 12 moves horizontally when moving forward, the main link 28 rotates about the hinge axis 28a and moves along the inner side of the center guide 23. In this case, the upper auxiliary link 29 inserted into the upper guide 22 serves to balance the main link 28 and the lower auxiliary link 30 so as to smoothly move horizontally. The synergistic action of the lower support 24a occurs with the hinge support 20a rising along the hinge guide 20.

The door lock 36 is installed at the lower end of the door 10, and the door lock spring 36c serves to lock the door outside the door lock moving hole 36b. This is simply released by pressing the door open button, as in a conventional microwave oven.

The driving force of the opening / closing operation of the door 10 and the tray 12 automatic opening and closing structure according to the present invention is a guide hole 44 installed on the inside of the tray 12 and the bottom surface 45 as shown in FIG. It is due to the guide rail 40. Guide rails 40 are formed on the left and right sides of the bottom surface 45, and spring holes 40B are formed on the inner side to load the springs 40A, and both sides of the guide rails 40 are formed long from the rear end to the front end. The guide hole 44 is formed in the tray 12 so as to be movable back and forth on the guide rail 40 of this structure. A stopper 42 is installed in the guide hole 44 at a predetermined distance from the rear end of the tray 12, and a stopper support 42A capable of supporting the stopper 42 is coupled thereto. The door 10 is closed while the stopper 42 enters the spring hole 40B and compresses the spring 40A.

As shown in FIG. 2 for a smooth operation of the automatic opening and closing structure of the present invention, the main roller 27 is perturbably installed at the bottom of the left and right trays 12 and fixed to the side of the tray 12. A tray guide 25 for guiding forward and backward movement of the 28 is attached or integrally formed on the adjacent wall surface. In addition, it is preferable to mount the shock absorbing spring 26 to mitigate the impact of inertia when the tray 12 is fully opened.

Figure 4 shows the relative position of the tray 12 and the bottom surface 45 according to the opening and closing of the door 10 and the tray 12 according to the present invention and the operating state of the spring 40A inside the guide rail 40 As a schematic plan view, it is to be noted that the spring 40A inserted into the guide rail 40 should be sufficiently stretched when opening and closing, since the spring 40A should be sufficiently considered. In addition, it is preferable that the tray 12 does not protrude more than two-thirds, and the stopper 42 inside the guide hole 44 has to be determined and manufactured in consideration of its full opening and closing times. will be.

When the door and tray automatic opening and closing structure according to the present invention are applied, the door and the tray are automatically opened at the same time by simply pressing the opening button when opening and closing the door by integrating the operation of the tray and the door, thereby making cooking easier and breaking the door. The effect is that the rate is also significantly reduced.

Claims (1)

On both sides of the inner surface of the rear end, the outer end of the hinge support 20A which is pivoted up and down in accordance with the action of external force in the state of being fitted in the arc-shaped hinge guide 20 formed in both side walls constituting the cavity is fixedly coupled, and is opened. When the locking state of the door lock 36 installed on the inner surface of the tip is released by pressing the button, the front end of the door 10 is opened upward by the action of the hinge support 20A and the bottom surface 45 of the cavity. In the microwave oven door and tray automatic opening and closing structure consisting of a tray 12 that slides forward while interlocking with the opening operation of the door 10 in the installed state, the tray 12 at a predetermined height on both side walls of the cavity The center guide 23 is formed in a straight shape along the moving direction of the arc and the circular arc formed symmetrically with each other at a predetermined interval in the upper and lower portions of the center guide 23 Upper and lower guides (22) and (24), and the lower end is fixedly coupled to the side of the tray 12, the upper end is the main link 28 is inserted and coupled to the center guide 23 so as to be coupled, one end is Upper and lower auxiliary links, which are hinged to the main link 28 in the center guide 23 via a hinge shaft 28A, and the other ends of the upper and lower sub-links 22 and 24 are movable so as to be coupled to each other. 29) (30) and the outer end is fixedly coupled to a predetermined position on the inner surface of the door 10, the inner end is movably fitted in the front of the lower auxiliary link 30 fitted to the lower guide (24). The lower support 24A and the left and right sides of the bottom surface 45 are installed side by side at regular intervals, and a spring 40A having elasticity always acting forward is inserted therein, and a spring communicating with the inside of the front end surface. A pair of guide rails 40 formed with balls 40B and a bottom surface of the tray 12 It is formed at the same interval as the guide rail 40 from the side, and when the inside of the coupling with the guide rail 40 enters through the spring hole 40B on the guide rail 40 to compress the spring 40A A pair of guide holes 44 provided with a stopper 42 and a stopper support 42A supporting the stopper 42, and are installed at regular intervals along the moving path of the tray 12 on the bottom surface 45; The door and tray automatic opening and closing structure of the microwave oven, characterized in that it comprises a plurality of guide rollers 27 that rotate freely in contact with the bottom surface of the tray 12 according to the moving direction of the tray 12. .