KR20020030529A - Microwave oven - Google Patents

Abstract

PURPOSE: A microwave oven is provided to prevent a door from being opened spontaneously in cooking by restricting sliding of a latch member, and to reduce parts with simple structure. CONSTITUTION: A microwave oven is composed of a body(1) having a cooking chamber, a component chamber(5) and a hook fitting part(12); a door installed in the front of the body to open the cooking chamber; a latch member(40) sliding along the door, and having a hook part fitted to the hook fitting part; a door locker contacted to the latch member in closing the door to lock the door by restricting sliding of the latch member, and separated from the latch member to slide the latch member; locker driving selection parts(55) selecting the position of the door locker; and a locker driving unit(53) moving the door locker according to selection of the locker driving selection parts. The latch member is slid or restricted with separating the door locker from the latch member or contacting. Opening of the door is prevented in cooking with simple structure.

Description

Microwave oven {MICROWAVE OVEN}

The present invention relates to a microwave oven, and more particularly to a microwave oven having a door lock.

Figure 6 is a partial perspective view of a conventional microwave outer casing decomposition state, Figure 7 is a side cross-sectional view of the microwave oven taken along the line VII-VII of FIG. As shown in these figures, the conventional microwave oven is rotatably coupled to the main body 101 in which the cooking chamber 103 and the component chamber 105 are formed, and to the front of the main body 101 so that the cooking chamber 103 can be rotated. The door 130 which opens and closes is provided.

The front opening of the cooking chamber 103 which is opened and closed by the door 130 is formed in the front left side of the main body 101, and the operation panel part 107 for operating the microwave oven is provided in the right side area | region. In addition, a door button 121 for opening the door 130 is provided below the operation panel unit 107, and the front surface of the main body 101 between the front opening of the cooking chamber 103 and the operation panel unit 107 will be described later. A pair of hook through holes 109 are formed to allow the hook portion 143 of the latch member 140 to pass therethrough.

The door 130 has a front door plate 131 provided with an internal monitoring screen, and a porous blocking plate (not shown) is attached to the rear surface of the front door plate 131 to block external exposure of electromagnetic waves. It has a rear door plate 133, one side of the door 130 is provided with a latch member 140 to maintain the closed state of the door 130 when the front opening of the cooking chamber 103 is closed.

The latch member 140 includes a support part 141 coupled to the inner side of the door 130 so as to be movable up and down, and a hook part 143 extending toward the rear of the door 130 from the upper and lower ends of the support part 141. Has In addition, the lower end of the latch member 140, both ends are coupled to the inner lower portion of the door 130 and the lower end of the support portion 141 of the latch member 140, respectively, a latch spring 145 for elastically supporting the latch member 140. ) Is provided.

In addition, a latching member 110 having a hook catching portion 112 that catches the hook portion 143 of the latching member 140 when the door 130 is closed in the inner front region of the component chamber 105 formed in the main body 101. ) Is provided. The hook catching portion 112 of the latch catching member 110 is formed at the front upper and lower portions of the latch catching member 110 so as to correspond to the hook through hole 109 formed in the main body 101. The hook portion 143 of the 140 is hooked to be engaged, and is formed to be inclined upwardly toward the inner side to hold the hook.

On the other hand, the door button 121 coupled to the lower portion of the operation panel 107 of the main body 101 is exposed to the front of the main body 101, the pressing portion 121 is pressed by the user and the pressing portion ( It has a working protrusion 123 extending rearward from the rear surface of 121 to the inside of the component chamber 105, and a button spring 125 for elastically supporting the door button 121. As shown in FIG. In addition, the hook action part 111 in the lower region of the latching member 110 releases the hook portion 143 of the latch member 140 caught by the hook locking portion 112 according to the pressing operation of the door button 121. ) Is installed.

The hook action part 111 is also coupled to the hook action lever 115 rotatably coupled to the lower portion of the hook engaging portion 112, and also coupled to the lower portion of the hook action lever 115 so as to be rotatable of the door button 121. It has a button action lever 113 for rotating the hook action lever 115 by rotating in accordance with the pressing operation.

By such a configuration, the conventional microwave presses the pressing portion 121 of the door button 121, the action projection 123 of the door button 121 is moved to the rear to rotate the button action lever 113, and rotate The button actuating lever 113 rotates the hook actuating lever 115 again so that the hook actuating lever 115 detaches upward from the hook part 143 of the latch member 140 that is hooked to the hook catching part 112. The door 130 is opened.

By the way, in the conventional microwave oven, since the door is opened by pressing the door button, when the user accidentally presses the door button in the cooking operation state of the microwave, or when the young children press the door button with curiosity However, there is a problem that the door is arbitrarily opened and there is a high risk of causing burns to the human body.

In order to solve such a problem, the microwave oven disclosed in Korean Patent Publication No. 97-004677 (1997.04.02) installs a locking piece having a hole in a door, and provides a solenoid having a shaft in the main body. The solenoid is driven in the closing and microwave operating states so that the shaft is fitted into the hole of the locking piece, thereby preventing any opening of the door.

However, such a microwave oven has a problem in that the locking piece must be separately installed in the door, and the structure is complicated and the components are increased, such as forming an insertion hole in the front of the main body so that the locking piece is inserted into the main body.

Accordingly, an object of the present invention is to provide a microwave oven which can prevent an arbitrary opening of a door during a cooking operation with a simple structure and fewer parts.

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

Figure 2 is a partial perspective view of the microwave outer casing decomposition state of Figure 1,

3 is a side cross-sectional view of the microwave oven taken along line III-III of FIG. 2;

Figure 4 is a side cross-sectional view showing a locked state of the microwave door lock of Figure 3,

5 is a door lock control block diagram of a microwave oven according to another embodiment of the present invention;

Figure 6 is a partial perspective view of a conventional microwave outer casing decomposition state,

7 is a side cross-sectional view of the microwave oven taken along the line VII-VII of FIG. 6.

* Explanation of symbols for the main parts of the drawings

1: body 3: cooking chamber

5: Part chamber 10: Latch locking member

12: hook hook 20: door button

30: door 40: latch member

43: hook portion 50: door locking device

51: door locker 53: locker drive unit

55, 70: Rocker drive selector 71: Rocker function setter

73: micom

According to the present invention, the cooking chamber and the component chamber is formed, the main body is provided with a hook hook portion in one region, the door is installed in front of the main body to rotate the opening and closing of the cooking chamber, the sliding reciprocating movement in the door A microwave oven including a latch member having a hook portion provided to be capable of being hooked and released from the hook engaging portion, the microwave oven being provided on either side of the door and the main body, and contacting the latch member in a closed state of the door. A door locker reciprocating between a door locking position for inhibiting a sliding movement of the latch member and a unlocking position spaced apart from the latch member to enable a sliding movement of the latch member; A locker drive selector for selecting the lock position or the unlock position of the door locker; It is achieved by a microwave oven characterized by having a locker drive unit for moving the door locker according to the position selected by the locker drive selection unit.

Here, the hook engaging portion is provided in the inside front region of the component compartment, the door locker is preferably installed in the component chamber adjacent to the hook engaging portion is contacted and spaced apart from the hook portion.

In addition, the locker driving unit is effectively a solenoid valve.

On the other hand, the locker drive selector may be provided as a push switch for driving the locker drive unit by blocking and connecting the power delivered to the locker drive unit is provided to the push operation on the outside of the main body.

Alternatively, the locker drive selector may include a microcomputer that controls the locker drive unit to move the door locker to the locked position when the cooking operation is completed, and to move the door locker to the unlocked position when cooking is completed; The locker function setting unit may be provided outside the main body to set the control function of the locker driving unit.

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

1 is a perspective view of a microwave oven according to the present invention, FIG. 2 is a partial perspective view of the microwave external casing disassembled state of FIG. 1, FIG. 3 is a side cross-sectional view of the microwave oven according to line III-III of FIG. 2, and FIG. 4. 3 is a side cross-sectional view illustrating a locked state of the microwave door lock of FIG. 3. As shown in these drawings, the microwave oven according to the present invention is rotatably coupled to the front of the main body 1 and the main body 1 in which the cooking chamber 3 and the component chamber 5 are formed. 3) The door 30 which opens and closes is provided.

The front opening of the cooking chamber 3 opened and closed by the door 30 is formed in the front left side of the main body 1, and the operation panel part 7 for operating the microwave oven is provided in the right side area | region. In addition, a door button 21 for opening the door 30 is provided at the lower portion of the operation panel unit 7, and the front of the main body 1 between the front opening of the cooking chamber 3 and the operation panel unit 7 will be described later. A pair of hook through holes 9 are formed to allow the hook portion 43 of the latch member 40 to pass therethrough.

The door 30 has a front door plate 31 having an internal monitoring screen and a porous blocking plate (not shown) attached to the rear surface of the front door plate 31 to block external exposure of electromagnetic waves. It has a rear door plate 33, and one side of the door 30 is provided with a latch member 40 for maintaining the closed state of the door 30 when the front opening of the cooking chamber 3 is closed.

The latch member 40 includes a support part 41 coupled to the inner side of the door 30 so as to be movable up and down, and a hook part 43 extending from the upper and lower ends of the support part 41 toward the rear of the door 30. Has In addition, the lower end of the latch member 40, both ends are coupled to the inner lower portion of the door 30 and the lower end of the support portion 41 of the latch member 40, respectively, a latch spring 45 for elastically supporting the latch member 40. ) Is provided.

In addition, a latching member 10 having a hook catching portion 12 that catches the hook portion 43 of the latch member 40 when the door 30 is closed in the inner front region of the component chamber 5 formed in the main body 1. ) Is provided. The hook catching portion 12 of the latch catching member 10 is formed on the front upper and lower portions of the latch catching member 10 so as to correspond to the hook through hole 9 formed in the main body 1, and the latch member ( The hook portion 43 of the 40 is hooked to be engaged, and is then inclined upward toward the inner side to hold the hook.

The door button 21 coupled to the lower part of the operation panel part 7 of the main body 1 is exposed to the front of the main body 1, and the pressing part 21 and the pressing part 21 which are pressed by the user, and the pressing part 21. It has a working projection 23 extending rearward from the rear surface of the component chamber 5 to the inside, and a button spring 25 for elastically supporting the door button 21. And, in the lower region of the latching member 10, the hook action portion 11 for releasing the hook portion 43 of the latch member 40 caught by the hook locking portion 12 in accordance with the pressing operation of the door button 21. ) Is installed.

The hook action part 11 is connected to the button action lever 13 and the button action lever 13 which are rotated by the action protrusion 23 of the door button 21 which is moved rearward when the door button 21 is pressed. It has a hook action lever 15 which rotates in contact and detaches the hook portion 43 of the latch member 40 upwardly from the hook engaging portion 12.

On the other hand, in one region of the main body 1 is provided with a door locking device 50 for preventing the opening of the door 30 during the cooking operation of the microwave oven.

The door locking device 50 includes a door locker 51 for moving between a door locking position for inhibiting the sliding movement of the latch member 40 and an unlocking position for allowing the sliding movement of the latch member 40, and a door locker ( A locker driver 53 for moving 51 and a locker driver selector 55 for driving the locker driver 53 to select a moving position of the door locker are provided. The locker drive unit 53 is provided with a solenoid valve for reciprocating the door locker 51 by power supply, and is installed in the upper upper region of the component chamber 5 so as to be adjacent to the hook engaging portion 12. In addition, the door locker 51 is coupled to the locker driving unit 53 so as to reciprocate toward the hook portion 43 of the latch member 40 hanging on the hook engaging portion 12 in the closed state of the door 30. The locker drive selector 55 is provided as a push switch that can be pushed on the front of the operation panel as shown in FIG. 1 to cut off and connect the power delivered to the locker drive unit 53.

With this configuration, the microwave oven according to the present invention, after the user closes the door 30 and executes the cooking operation, and presses the push switch that is the locker drive selection unit 55 of the door lock device 50, the locker drive unit Power is supplied to 53 to operate the solenoid valve. Then, as shown in FIG. 4, the door locker 51 is moved to the lock position of the door 30 which is in contact with the upper end of the hook portion 43 hanging on the hook locking portion 12, whereby the latch member 40 is closed. Sliding movement is suppressed and the door 30 is not opened even when the door button 21 is pressed.

On the other hand, after the cooking operation is completed, when the user releases the push switch of the locker drive selector 55 of the door lock device 50, the power applied to the locker drive unit 53 is cut off, and the solenoid valve returns. Run Then, as shown in FIG. 3, the door locker 51 is moved to an unlocked position spaced apart from the hook portion 43 hanging on the hook locking portion 12, thereby allowing the sliding movement of the latch member 40. Done. In this state, when the door button 21 is pressed, the door 30 is opened while the hook part 43 held by the hook locking part 12 is released by the operation of the hook action part 11 described above.

On the other hand, Figure 5 is a door lock control block diagram of a microwave oven according to another embodiment of the present invention. The microwave oven according to the present embodiment has a door locker 51, a locker driver 53, and a locker driver selector 70 as the door lock device 50, similarly to the microwave oven disclosed in FIGS. 1 to 4 described above. .

The microwave oven according to the present embodiment has the same configuration as the above-described embodiment of the door locker 51 and the locker driver 53, and the locker drive selector 70 includes a locker function setting unit 71 and a locker function setting unit. The microcomputer 73 performs the function of the locker set at 71.

The locker function setting unit 71 causes the door locker 51 to move to a locked position that suppresses the sliding movement of the latch member 40 during the cooking operation of the microwave oven in the closed state of the door 30, and the cooking operation of the microwave oven. Upon completion, the door locker 51 is set to move to the unlocking position to enable the sliding movement of the latch member 40, the microcomputer 73 according to the function set in the locker function setting unit 71 The locker driver 53 is controlled to operate the locker driver 53.

Here, the locker function setting unit 71 is preferably provided with a function setting key on the operation panel provided in front of the main body 1 so that the user can set and release the function.

With this configuration, the microwave oven according to the present embodiment allows the user to operate the function setting key to suppress the opening of the door when the cooking operation is completed and to allow the door to be opened when the cooking operation is completed. Function), the door 30 is closed and the microwave oven is operated. Then, the microcomputer 73 supplies power to the locker driver 53 to operate the solenoid valve. Then, the door locker 51 is moved to the lock position of the door 30 which is in contact with the upper end of the hook portion 43 hanging on the hook engaging portion 12, thereby suppressing the sliding movement of the latch member 40, the door button The door 30 does not open even when 21 is pressed.

On the other hand, after the cooking operation is completed, the microcomputer 73 cuts off the power applied to the locker driving unit 53 to execute the return operation of the solenoid valve. Then, the door lock 51 is moved to the unlocking position spaced apart from the hook portion 43 hanging on the hook engaging portion 12, the sliding movement of the latch member 40 is possible. In this state, when the door button 21 is pressed, the door 30 is opened while the hook part 43 held by the hook locking part 12 is released by the operation of the hook action part 11 described above.

Thus, the door locker for suppressing and allowing the sliding movement of the latch member during the microwave operation in the closed state of the door; By providing a locker driving unit for operating the door locker and a locker driving selection unit for operating the operation of the locker driving unit, the door is not opened even when the user accidentally presses the door button or the children press the door button with curiosity during the cooking operation. As a result, an accident such as a burn on the human body can be prevented in advance.

In addition, by suppressing and allowing the sliding movement of the latch member with a relatively small component to prevent the arbitrary opening of the door, it is possible to reduce the number of parts, it is possible to simply configure the structure of the door locking device.

In the foregoing and embodiments, the door locker, the locker driver and the locker drive selector are installed in the main body of the microwave oven, and the door locker is described so as to contact and be spaced apart from the hook part of the latch member. Of course, the door locker may be installed inside to be contacted and spaced apart from the latch member to suppress and allow the sliding movement of the latch member.

As described above, according to the present invention, there is provided a microwave oven which can prevent the arbitrary opening of the door during the cooking operation with a simple structure and fewer parts.

Claims (5)

A cooking chamber and a component chamber are formed and a main body having a hooking portion in one region, a door installed at the front of the main body to rotate and open the cooking chamber, and a sliding reciprocating movement in the door are provided. In a microwave oven having a latch member having a hook portion that is engaged and released; Is provided on either side of the door and the main body, the door locking position to contact the latch member in the closed state of the door to suppress the sliding movement of the latch member and the sliding movement of the latch member spaced apart from the latch member A door locker for reciprocating between unlocking positions to enable; A locker drive selector for selecting the lock position or the unlock position of the door locker; And a locker driving unit for moving the door locker according to a position selected by the locker driving selecting unit. The method of claim 1, The hook engaging portion is provided in the front region inside the component chamber, the door locker is installed in the component chamber adjacent to the hook engaging portion is microwave oven, characterized in that the hook portion is contacted and spaced apart. The method of claim 1, The locker driving unit is a microwave oven, characterized in that the solenoid valve. The method according to claim 1 or 3, The locker drive selection unit is a microwave oven, characterized in that the push switch is provided on the outside of the main body to operate the locker drive unit by blocking and connecting the power delivered to the locker drive unit. The method according to claim 1 or 3, The locker drive selection unit, A micom for controlling the locker driving unit to move the door locker to the locked position during a cooking operation and to move the door locker to the unlocked position when cooking is completed; And a locker function setting unit provided outside the main body to set a control function of the locker driving unit.