KR200165774Y1 - Apparatus for rotating the door of a microwave oven - Google Patents

Abstract

The present invention relates to a rotating device of a door for a microwave oven, and the separation width (γ) from the front panel 12 required for the rotation of the door 21 is hinged by a hinge plate 31 protruding outwardly. The door 21 is secured to be smoothly rotated, and the spaced hinge plate 31 is pulled inward by the spring 71 after the door 21 is rotated to seal the cooking chamber 11 of the door 21. Of course, the front panel without pressing the user's door 21 when the door 21 is rotated by the cam 51 mounted on the door 21 and the support plate 41 in contact with the cam 51. The door 21 is rotated by a predetermined width γ in a vertical direction with respect to 12 to improve convenience.

Description

Rotating device of the door for microwave oven

The present invention relates to a rotating device for a door for a microwave oven, and more particularly to a rotating device for a door for a microwave oven installed so that the door attached to the front entrance of the cavity is rotated so that the cooking chamber is opened and closed.

In general, a microwave oven includes a cooking box having a rectangular box shape to accommodate food to be cooked, a high frequency oscillator having a high frequency oscillating at a constant frequency (about 2450 MHz) so that the food contained in the cooking chamber is dielectrically heated, and the high frequency oscillator. In addition to the various controllers for the control of the interior is made of a control unit bonded to one side of the cooking chamber, and the door is provided for opening and closing of the inlet opening for access of food in the front of the cooking chamber.

Here, the door is attached to one side of the cavity constituting the cooking chamber via a hinge to be rotated to the front and rear in accordance with the selective pressure of the user to open and close the front entrance of the cooking chamber.

6, the hinge plate hole 113 recessed and opened at one end of the front panel 12 (generally opposite to the control) is mounted on the front surface of the cavity 16. As shown in FIG. And a hinge plate 131 inserted into and fixed into the hinge plate hole 113 and a pin which is inserted into the pin hole 33 of the hinge plate 131 and protrudes outward from the upper and lower ends of the door 21 to be rotated freely. 23).

In addition, the pins 23 are mounted on one side of the door 21 having a rectangular plate shape, so as to cover the entire surface of the cooking chamber 11, that is, a rod shape extending in the longitudinal direction at the upper and lower ends of the opposite side of the control unit. A screw thread to which a washer or nut 61 is fixed is formed at the end.

In addition, the hinge plate 131 forms a circular shape similar to the cross-sectional shape of the pin 23 and is opened so that the pin 23 protruding from one side of the door 21 is inserted and rotated freely. The bolt 162 is inserted into a plurality of central points (two locations generally), and is formed of a bolt hole 134 fastened on the cavity 16.

Here, one side of the pinhole 33 forming portion of the hinge plate 131 is processed to form a semicircular outer corner so that the interference with the other member is eliminated during the rotation operation.

In addition, the hinge plate hole 113 is opened in a rectangular shape from the front side of the front panel 12, the door 21 is mounted so that the hinge plate 131 is inserted in the transverse direction.

Accordingly, the hinge plate 131 is inserted into the hinge plate hole 113 of the front panel 12 so that one end of the hinge plate 131 on which the pin hole 33 is formed protrudes outward, and the bolt of the hinge plate 131 is inserted into the hinge plate 131. The bolt 162 is inserted through the hole 134 to fix the hinge plate 131 on the cavity 16, and the pin 23 of the door 21 is inserted into the pin hole 33 to insert the pin 23. The tip of the) is protruded to the outside of the pinhole 33, the nut 61 is fastened to the tip of the protruding pin 23 is fixed so that the pin 23 is rotated with respect to the hinge plate 131. .

In addition, when the door 21 is opened and closed while being rotated, the pin 23 inserted into the pinhole 33 of the hinge plate 131 fixed to the cavity 16 according to the pressure on the user's door 21. The door 21 is rotated about an axis, and one end of the pin 23 forming part of the door 21 interferes with the front panel 12 by the formation position of the pin 23.

Therefore, one end of the door 21, which is rotated by a predetermined width β outside the hinge plate 131, is rotated without interference with the front panel 12. As shown in FIG.

In addition, the protrusion width β of the pinhole 33 is projected within an allowable range λ / 4 where the emission of high frequency radiated from the high frequency oscillator is blocked, or a pinhole protruding beyond the allowable range λ / 4. The sealing member is fastened to the inner side surface of the door 21 in which the pins 23 are fitted to the 33, so that the cooking chamber 11 is sealed.

However, as described above, the door 21 and the front panel 12 are spaced apart by a predetermined width β for the rotation of the door 21, and this gap is close to the maximum value of the allowable range in which high frequency leakage is blocked. As it is installed in such a way, leakage of high frequency through the gap is concerned, and careful attention of the operator is required so that the door 21 is mounted at a constant separation width β with the front panel 12, thereby reducing work efficiency. do.

In addition, as a separate sealing member is attached to the inner surface of the door 21 for sealing with the front panel 12, an increase in manufacturing cost and an increase in assembly labor due to the use of the auxiliary member occur.

In addition, the pinhole 33 of the hinge plate 131 is expanded or the fastening force of the hinge plate 131 decreases as the door 21 is frequently rotated, so that the space between the door 21 and the front panel 12 is reduced. A gap is formed so that a gap larger than an allowable range for blocking high frequency leakage is formed, and a door mounted on the opposite side of the door 21 in the hinge direction, that is, a handle part of the door 21, for closing the front side of the cooking chamber of the door 21. The lock of (21) pulls the door 21 toward the cooking chamber 11 when the door 21 is closed, so that the door 21 on the lock unit is in close contact with the front panel 12 on the front of the cooking chamber 11. And, there is a problem that the high frequency leakage through this gap while relatively spaced apart from the front panel 12, that is, the hinge portion 21 of the lock device.

Therefore, the object of the present invention was devised to solve the above problems, the distance between the door and the front panel is secured enough to rotate freely without interfering with the front panel during the rotation of the door, as well as to the closed position of the cooking chamber As the rotated door is in close contact with the front panel, leakage of high frequency is prevented, and the assembly is performed only by simple mounting work regardless of the distance from the front panel of the door, thereby improving the efficiency of the assembly work. In addition to the opening and closing of the rotation, the door is rotated by its own pressure to the position of the opening and closing according to the pressure of the user to provide a rotation device of the microwave oven door to improve the user's convenience. Is in.

The present invention for achieving the above object, in the microwave oven having a door to open and close the entrance of the cavity, the hinge is mounted on the cavity to be fixed and rotated to one side of the door to protrude and insert in the cavity. It comprises a means.

1 is a perspective view of a microwave oven according to the present invention,

Figure 2 is a perspective view of the separation and coupling of the door rotating device for a microwave oven according to the present invention,

Figure 3 (a), (b), (c), (d) is a hinge plate operating state diagram of a door for a microwave oven according to the present invention,

Figure 4 (a), (b), (c) is an operating state of the separation means of the door for a microwave oven according to the present invention,

5 is a sectional view of a hinge plate portion to which a leaf spring is applied according to the present invention;

Figure 6 is a perspective view of the separation and coupling of the conventional door hinge for microwave oven,

Figure 7 (a), (b), (c) is a hinge plate operating state diagram of a conventional microwave oven door.

* Explanation of symbols for main parts of the drawings

11: cooking chamber 12: front panel

13 hinge plate hole 14 support plate hole

15: fixed plate 16: the cavity

21: door 22: rotation means

23: pin 31: hinge plate

33: pinhole 34: moving hole

35: spring hole 36: bending rod

41: support plate 42: inclined surface

51: cam 52: pinhole

53: protrusion 61: nut

62: bolt 71: spring

72: leaf spring

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

1 shows a door part of a microwave oven according to the present invention, and FIG. 2 shows a door rotating device of a microwave oven according to the present invention, and the same reference numerals are denoted in the same parts as in FIG. While detailed description thereof will be omitted.

The present invention provides a cooking chamber 11 formed of a box-shaped cavity 16 having an inlet opening at one side thereof to accommodate food to be cooked while the food to be cooked is accommodated, and a band across the front outer portion of the cavity 16. The front panel 12 is formed in a shape and fastened to the front panel 12, and the front panel 12 is attached to the front of the cavity 16, a plurality of at one end of the door 21 and the cavity 16 to enable the rotation operation Hinged means 22 are provided.

Here, the hinge means 22 is fixed to the upper end of the cavity 16 through the front panel 12, the hinge plate 31 to fix and support one end of the door 21, and the door 21 When the door 21 is rotated is made of a separation means that is pressed outward with respect to the front panel (12).

In addition, the separation means is in close contact with the lower end of the hinge plate 31 and the support plate 41 which is attached to the upper end of the cavity 16 through the front panel 12 and the support plate 41 in contact with each other Cam 51 is attached to one end of the door 21 to be pressed.

In addition, the hinge plate 31 forms a rectangular bar shape and both edges of the front end portion protruding outward of the front panel 12 after being inserted through the outer end thereof, that is, through the hinge plate hole 13 of the front panel 12. A semi-circular body that is processed, a pinhole 33 that is circularly penetrated and opened in a longitudinal direction at one end protruding to the outside of the front panel 12 of the body, and a plurality of central points of the body (the present invention) In the two points) in the longitudinal direction of the body extends by a predetermined width through the slit shape while opening the movable hole 34 to allow the insertion of the bolt (62), and in the longitudinal direction at the opposite end of the pin hole (33) It consists of a spring hole 35 through which the end of the coil spring 71 is fixed.

In addition, the support plate 41 forms a rectangular hing bar shape, and is inserted through the support plate hole 14 of the front panel 12, and then, on the inside of the cavity 16, through the bolt 62. An inclined surface 42 is formed on the one side of the front end of the front panel 12 to be processed to form a part of a circle. The inclined surface 42 is a door closed in front of the cooking chamber 11. 21 is rotated so as to be open, that is, facing from the one end of the cooking chamber 11 to the outside direction.

In addition, the support plate 41 is fixed to the cavity 16 while being in close contact with the lower portion of the hinge plate 31 by a bolt 62 inserted and passed through the moving hole 34 of the hinge plate 31. Of course it can be.

In addition, the cam 51 has a substantially triangular plate shape, and is inserted into the pinhole 33 of the hinge plate 31 at the center thereof to form a rod shape in the vertical direction at the upper end of one side of the door 21 so as to be freely moved. It consists of a pinhole 52 is inserted and fixed to the protruding pin 23 and a protrusion 53 protruding in a triangular plate shape in the inward direction of the door 21.

Next, the operation and effects of the present invention constructed as described above will be described.

The cam 51 is attached to the upper and lower ends of one side of the door 21. At this time, the pin 23 of the door 21 is fitted into the pinhole 52 of the cam 51 to be fixed. The projection 53 is mounted so as to protrude with respect to the inner surface of the door 21 in the inward direction of the door 21.

In addition, the support plate 41 is inserted into the support plate hole 14 formed in the front panel 12 and is seated on the upper end of the cavity 16 to be fastened through the bolt 62, and the inclined surface of the support plate 41. The portion 42 protrudes outward from the support plate hole 14, and the inclined surface 42 faces the outer side of the front panel 12, that is, the outside of the microwave oven.

In addition, the hinge plate 31 has a pin hole 33 fitted into a pin 23 of the door 21, and a nut or the like formed on an upper end of the pin 23 protruding upward through the pin hole 33. 61 is mounted and fixed, the body of the hinge plate 31 is inserted inward through the hinge plate hole 13 formed on the support plate hole 14 of the front panel 12, and then each movement of the body The bolt 62 is inserted downward through the hole 34 and fixed on the cavity 16.

At this time, each of the moving holes 34 that spans the body of the fixed bolt 62 is movable in the longitudinal direction according to the shape of the moving hole 34, that is, the shape penetrated long in the longitudinal direction, One end of the spring 71 is inserted into and fixed to a spring hole 35 formed at the opposite end of the pin hole 33 of the body, and the other end of the cavity 71 of the cavity 16 into which the body is inserted and seated. It is fixed at the top.

Therefore, the door 21 fixed to one side of the front panel 12 by the hinge plate 31 is the front of the cooking chamber 11 on one side of the first front panel 12, as shown in FIG. The door 21 is opened and closed, that is, the door 21 is perpendicular to the front panel 12 is bonded to one side.

At this time, the pin 23 of the door 21 is supported while being inserted into the pinhole 33 of the hinge plate 31, and the hinge plate 31 has a moving hole 34 formed at the center thereof in the bolt 62. Supported by the spring 71 is caught by the spring hole 35 in the inward direction of the cavity 16 is in close contact with the door 21 and the front panel 12 to form a minute gap (α).

Further, in order to rotate the door 21, a user applies pressure to a handle of the door 21 to pull the door 21 outward, so that a separation width between the front end of the door 21 and the front panel 12 ( γ) is sufficiently spaced so as to rotate without interference when the door 21 is rotated, and through this gap, the door 21 is shown in (b) (c) of FIG. 90 ° is rotated about an axis to reach the position where the door 21 faces the front surface of the cooking chamber 11.

At this time, the hinge plate 31 is the end of the hinge plate 31 by pressing the pinhole 33 across the pin 23 of the door 21 to the outside in accordance with the pressing of the user's door 21 A predetermined width γ protrudes outward while suppressing the elasticity of the spring 35 spanning the hole 35, and the movable hole 34 of the hinge plate 31 is moved outward while being supported by the bolt 62. .

In addition, the pressure on the elasticity of the spring 71 is abolished according to the user's pressing force against the door 21 reaching the position opposite to the front surface of the cooking chamber 11, thereby restraining the spring 71 by the restoring force of the spring 71. The hinge plate 31 is moved inward, and the pin 23 of the door 21 fitted in the pinhole 33 of the hinge plate 31 is moved in the direction of the front panel 12 so that the door 21 and the front are moved. The panels 12 are in close contact with each other at minute intervals α.

On the other hand, the door 21 pressed and contacted by the support plate 41, as shown in Figure 4, the door 21 is opened first, that is, the door to the front panel 12 of the front of the cooking chamber 11 Support plate 41 in which the projections 53 of the cam 51 attached to the upper and lower ends of the door 21 are fastened to the cavity 16 in a state in which the 21 is vertical and bonded to one side of the front panel 12. The inclined surface of the inclined surface 42 of the position close to the front end of the inclined surface 42 is seated while being seated, the door 21 is in close contact with the front panel 12 by the hinge plate 31. do.

In addition, when the door 21 is rotated according to the pressure of the user, the projection 53 of the cam 51 is pressed against the inclined surface 42 of the support plate 41, the back force is applied to the front panel 12 The cam 51 of the door 21 is spaced apart from the fixed support plate 41.

At this time, the cam 51 is movable only in the vertical direction with respect to the front panel 12 in accordance with the clearance range of the pin 21 of the door 21, the cam 51 by the force on the inclined surface 42 As shown in (b) of FIG. 4, the interference between the front panel 12 and the front panel 12 and the end of the door 21 pivoting about a predetermined width γ, ie, the pin 23, The door 21 is rotated by a sufficient separation width γ which is abolished, and the protrusion 53 of the cam 51 of the door 21 that reaches the front closing position of the cooking chamber 11 according to the rotation is supported by the support plate. The front panel 12 is pulled in the direction of the front panel 12 by the restoring force of the hinge plate 31 while abutting the outer end portion of the inclined surface 42 of the 41 so that the protrusion 53 is formed along the outer circumference of the inclined surface 42. Sliding in the direction 12, the door 21 is in close contact with the front panel 12 to form a fine width (α).

In addition, the bending rod 36 vertically bent at the distal end portion of the hinge plate 31 extends inwardly to the inner end of the hinge plate 31 so as to retreat to the inside of the front panel 12. And a fixed plate 15 having a rectangular plate shape is mounted on the upper end of the cavity 16 in which the bent portion of the bent rod 36 is located. The bent portion of the bent rod 36 is positioned at a position spaced in a predetermined width inwardly with respect to the bent portion, and a plate spring 72 protruding outwardly is protruded to one side of the fixing plate 15 in the bent portion direction.

Accordingly, the pin 23 of the door 21 is spaced apart from the front panel 12 according to the pressure applied to the door 21, and the pinhole 33 of the hinge plate 31 spanning the pin 23 is The hinge plate 31 is moved to the outside while being moved outward as the pin 23 moves.

At this time, the bending rod 36 is moved in the direction of the front panel 12, the bending portion of the bending rod 36 presses the leaf spring 72 mounted on one side of the fixing plate 15, the leaf spring 72 ) Is pressed and a constant restoring force is generated and when the pressing force on the door 21 is abolished, the hinge plate 31 is moved inward with respect to the front panel 12 by the restoring force of the leaf spring 72. 21 is in close contact with the front panel 12.

Here, the leaf spring 72 and the coil spring 71 is sufficiently elastic so that the door 21 can be in close contact with the front panel 12 to form a fine width α, as well as the rotation of the door 21. Of course, the cam 51 and the support plate 41 may have a sufficient restoring force to allow a sliding movement on the inclined surface 42 of the support plate 41 of the cam 51 spaced apart from each other by the cam 51 and the support plate 41. .

As described above, according to the present invention, the elasticity of the spring fastened to the hinge plate improves the sealing efficiency of the cooking chamber of the door, thereby eliminating the risk of high frequency leakage, and the careful separation and adjustment between the door and the front panel. It is abolished and the efficiency of assembling work is improved, and the door and front panel are rotated while maintaining the sufficient separation width γ required for the door to be rotated by the inclined surface of the cam and the support plate when the door is rotated. There is an effect of improving the merchandise by the rotation of.

Claims (5)

In a microwave oven having a door to open and close the entrance of the cavity, a pin protruding outwardly from one side of the upper and lower ends of the door, and a hinge coupled to the cavity so that the pin is rotated and protrudes and inserted in the cavity Rotating the door for a microwave oven, characterized in that it comprises a plate and a hinge means, one side is coupled to the cavity and the other side is coupled to the hinge plate so that the door is in close contact with the cavity when the door is closed. Device. The hinge plate of claim 1, wherein the hinge plate has a slit shape and is slit so that the pin hole of the door is inserted and rotated, and the bolt fastened to the cavity is penetrated, and the width of the hinge plate is moved in the longitudinal direction with respect to the fixed bolt. Rotating device for a microwave oven door, characterized in that it comprises a moving hole. According to claim 1, The door rotating device for a microwave oven characterized in that it comprises a separation means for pressing the pin of the door to the outside so as to rotate while being spaced from the cavity. According to claim 3, The separation means is fixed to the pin of the door and the cam is a projection protruding into the inside of the door, and the portion in which the projection is contacted so that the projection of the rotating cam is pressed outward to the inclined surface Rotating device for a door for a microwave oven, characterized in that formed with a support plate fastened to the cavity. The method of claim 4, wherein the support plate is in close contact with the lower end of the hinge plate is inserted through the same through hole of the front panel is mounted on the cavity and is fastened on the cavity by a bolt penetrated into the moving hole of the hinge plate. A rotating device for a door for a microwave oven.