KR950005184Y1 - Door locking apparatus for washing machine - Google Patents

Abstract

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Description

Door locks of combined washing machines

1 and 2 is a longitudinal cross-sectional view showing the configuration of a combined washing machine to which the present invention is applied, Figure 1 is a longitudinal cross-sectional view showing a state in which the tub is standing vertically.

2 is a longitudinal cross-sectional view of the tub standing horizontally.

Figure 3 is a plan view of the inner inner door locking device that is the main part of the present invention.

4 is a side cross-sectional view of FIG.

5 is a partially enlarged cross-sectional view showing the locked state of the inner door.

6 is an enlarged cross-sectional view of the inner door hinge portion.

7 is a cross-sectional view showing an outer door lock.

8 is a flow chart of the door opening operation.

* Explanation of symbols for main parts of the drawings

1: Tub 13: Internal door

14: internal door lock 15: door hinge

17: external door 39: external door lock

21: body 22: lever

23: hinge 24: slider

25,35 solenoid valve 27 hook

28: hook guide 41: spring

44: tub cover 46: hinge

51: home

The present invention relates to a door lock device of a combined washing machine, and more particularly, to a door lock device of a combined washing machine having a safety device to automatically open and close the outer door and the inner door of the combined washing machine, and not to be opened during the washing operation. .

Conventionally, a pulsator type washing machine does not have an internal door locking device, and a door of a European drum washing machine has one door, and a locking principle includes a bimetal lock type and an electromagnetic valve lock type.

The bimetallic locking device is closed by the door, and when the power is applied, it is locked by the bimetal deformation and can be opened two to three minutes after the power is turned off.

In addition, the solenoid valve locking device detects the rotation of the drum motor and can be opened when the drum is stopped.

Conventional interior door lock as described above is not suitable for the structure of opening the door by detecting the rotation of the tub, such as a compound washing machine, bimetal type was uncomfortable to wait 2-3 minutes after turning off the power, The valve type can be opened only when the operation of the drum is stopped, which is inconvenient to open by hand.

The present invention has been devised to solve the above-mentioned conventional defects, the inner door lock device for locking the inner door, the outer door lock device for locking the outer door, and detect the vertical state of the tub, the inner door It provides a door lock device for a combined washing machine composed of a microcomputer controller for controlling the solenoid valve of the locking device and the solenoid valve of the external door locking device to open the inner and outer doors in sequence.

Hereinafter, the present invention will be described in detail with reference to FIGS. 1 and 8 of the accompanying drawings.

1 is a cross-sectional view showing the configuration of a combined washing machine to which the present invention is applied, in which 1 is a tub, 2 is a drum, 3 is a drum motor, 4 is a pulsator, 5 is a bearing housing, 6 is a drum pulley, and 7 is a pulsator. As shown in the pulleys, the tub 1 serving as the driving unit is supported by the damper 8 on the lower plate 9 and rotated 90 degrees about the tub shaft 50 in the outer center of the tub 1.

The tub 1 has a drum 2 and a pulsator 4 embedded therein, and a drum motor 11, a bearing housing 5, etc. are attached to the tub 1, and a drum pulley 6 and a pulley 7 The drum 2 and the pulsator 4 are interlocked.

There is a tub cover 44 on the tub 1 and the inner door 13 is fixed to the tub cover 44 by one of the door hinges 15 and the other by the inner door locking device 14. The top of the outer case 12 has a cover 20 and the outer door 17 is coupled to the cover 20 by the door hinge 19 and the door hinge 19 and the hook 31.

The inner door lock 14 is coupled to a lock bracket 43 fixed to the tub cover 44, as shown in FIGS. 3 to 5, and the door hook 27 is connected to the inner door. It is fixed to (13).

The door hook 27 is coupled to the spring 41 by the hinge 46 and is fixed to the door cover 45 by the hook holder 40, and is rotatable about the hinge 46, and the spring 41. The door hook 27 is pushed in and is forced clockwise.

In addition, the inner door locking device 14 is fixed to the valve plate 26, the solenoid valve 25 is fixed, the plunger in the solenoid valve 25 is coupled to the slider 24 to perform the reciprocating sliding motion.

The right end of the slider 24 is bent at a right angle so that the door hook 27 can be pushed out. The outside of the inner door lock 14 is surrounded by a body 21 and a cover 29.

The other side of the inner door 13 is rotatably coupled to the tub cover 44 by a door hinge 15, like the sixth tile, and a spring 48 applies a force to open the inner door 13 upwards. have.

7 is a cross-sectional view of the outer inner door lock 39, the hook 31 is rotatably coupled to the hinge 33 to the outer door 17, as shown, the spring 32 is hook ( 31 is applied to rotate clockwise, the solenoid valve 35 is fixed to the inner cover 20 of the panel 18, the lever 30 connected to its plunger is rotatable to the hinge 34. It is bound together.

In addition, a switch 36 is fixed to the rear part of the solenoid valve 35, and a rope 38 for opening the outer door 17 at the time of power failure is connected to the rear end of the plunger.

In addition, in the body 21 of FIG. 5, the switch 54 is fixed to the valve plate 23 and the switch lever 42 is attached to the hook holder 40 to operate the switch 54. ) To detect closing and opening.

In the drawings, reference numeral 10 denotes a rear cover, 16 a hinge bracket, 37 a spring, 49 a gasket, and 53 a bolt.

8 is a flowchart illustrating an operation of opening a door according to the present invention.

Hereinafter, the operational effects of the present invention as described above will be described.

When the laundry is introduced, the outer door 17 and the inner door 13 are automatically opened in the state shown in FIG. 1, and after the laundry is put into the drum 2 in the open state of the door 17, the door is closed and washing is performed. Will be done.

In the pulsator type washing, the pulsator 4 is rotated left and right by a pulsator motor 11 attached to the outside of the bottom of the tub 1 while the tub 1 is straight as the first tile. (3) The drum 2 is rotated in the opposite direction to the pulsator 4 to wash the laundry while the laundry is rubbed between the lift 55 and the pulsator 4.

When washing the drum, the tub 1 is rotated 90 degrees counterclockwise around the bearing housing 5 installed at the center center left and right outside the tub 1 as in the second degree, and then the lift 55 is rotated while the drum 2 is rotated. The laundry is lifted and dropped by).

In addition, the vibration caused by the eccentricity of the laundry during washing and dehydration absorbs the four dampers 8 and simultaneously supports the tub 1.

As such, when the tub 1 is in a horizontal state when washing the drum, the outer door 17 and the inner door 13 should not be opened. In this state, when the door is opened, the door opening switch is operated to open the tub (1). After setting up vertically, the outer door 17 is opened, and then the inner door 13 is opened.

2 is a view in which the tub 1 is rotated horizontally, while the worm motor 56 attached to the outside of the tub 1 in the state of FIG. 1 rotates the worm gear 57 fixed to the bearing housing 5. (1) is rotated 90 degrees to the horizontal state of FIG.

As shown in FIG. 1, when the tub 1 is erected vertically, the right switch 59 attached to the worm gear 57 is operated to send a signal to the microcomputer control so that the worm motor 56 is stopped and the left switch 60 is horizontal. ) To stop.

Hereinafter, the operation of the inner door locking device 14 according to the present invention will be described in detail with reference to FIGS. 3 to 6, and by pressing the inner door 13 by hand, the door hook 27 may have a tub cover 44. The hook guide 28 is fixed to the hook and is caught. At this time, the door hook 27 is rotated slightly counterclockwise around the hinge 46 and is caught by the hook guide 28 because the spring 41 exerts a clockwise force.

After washing, when the inner door 13 is opened, when electricity is applied to the solenoid valve 25 by an electric signal from the microcomputer controller, the plunger 52 is pushed to the right in FIG. 5 and fixed to the left and right sides of the plunger 52. As the slider 24 is pushed together, the bent portion at the right angle pushes the door hook 27 to move away from the hooking jaw of the hook guide 28, thereby opening the inner door 13 upward.

3 is a plan view of the inner door locking device 14, and since the inner door 13 cannot be opened automatically during a power failure, the lever 22 fixed to the valve plate 26 by the hinge 23 is When the lever 22 is pushed by the groove 51 of the slider 24, the slider 24 is pushed to the left and the door hook 27 is pushed open as indicated by the arrow in FIG.

In the body 21, the switch 54 is fixed to the valve plate 26 and the switch lever 42 attached to the hook holder 40 of FIG. 5 when the inner door 13 is closed closes the switch 54. It operates to open and to turn off to detect the closing and opening of the inner door 13.

The outer door 17 has a hook 31 attached to the outer door 17 to the panel 18 as shown in the seventh diagram. At this time, the switch 36 attached to the left side of the solenoid valve 35 is pushed by pushing the lever 30. Detect closing by operating.

Then, when opening, when the power is applied to the solenoid valve 35, the lever 30 is rotated about the hinge 34 in the clockwise direction to push the hook 31 to escape from the panel 18, the outer door ( 17) is pushed up by the torsion spring by the door hinge 19 of FIG. 1, and in the case of power failure, the rope 38 of FIG. 7 can be pulled and opened manually.

FIG. 8 is a flow chart illustrating the operation of the door opening switch. First, when the tub 1 is vertically determined by receiving a signal of the operation state of the right switch 59 or the left switch 60 of FIG. Open the outer door 17, and when the opening is confirmed, the inner door 13 is opened sequentially. And, if the tub 1 is not vertical, first turn the worm motor 56 to the right to raise the tub 1 vertically, open the outer door 17, and if the outer door 17 does not open after 1 to several seconds. An abnormal alarm is triggered to indicate an abnormal condition.

The present invention as described above is easy to use because the inner and outer doors can be automatically opened sequentially, and the safety is improved because it is always opened in a safe state by detecting the tub rotation state, and also when the washing program ends Since the tub is always standing vertically, the door can be opened immediately, which further improves convenience.

Claims (3)

The inner door lock device 14 for locking the inner door 13, the outer door lock device 39 for locking the outer door 17, and the tub 1 are sensed vertically, and the inner door lock device ( 14 of the combined washing machine characterized in that the control of the solenoid valve 35 of the electromagnetic valve 25 and the outer door locking device 39 of the inner and outer doors 13, 17 to sequentially open Door lock. 2. The other end of the inner door lock according to claim 1, wherein one end of the inner door locking device (14) is coupled to the tub cover (44) by a door hinge (15) and is supported by the spring (48) toward the open side. The hook 27 is coupled to the spring 41 by the hinge 46 on the hooking jaw of the hook guide 28, and the solenoid valve 25 inside the body 21 fixed to the inside of the tub cover 44. ) Is fixed and the plunger of the solenoid valve 25 is coupled to the slider 24, the door lock device of the combined washing machine, characterized in that the front end of the slider 24 is formed with a bent portion for pushing the door hook 27 is formed . The lever 22 for opening the inner door 13 at the time of power failure is coupled to the valve plate 26 by a hinge 23, and one end of the lever 22 is formed in the groove of the slider 24. 51) The door lock device of a combined washing machine, characterized in that the hanging.