KR20070066605A - Control apparatus of washing machine - Google Patents

Abstract

A control apparatus of a washing machine is provided to restrict a rotary knob from shaking in the radial direction by forming a guide rib guiding the inner periphery of the rotary knob and the outer periphery of the rotary knob. A washing machine includes a control panel(50), a printed wire board(80), a window(60), a rotary knob(86), and an LED supporter. An opening hole is formed in the control panel. A rotary encoder is installed in the printed wire board and a plurality of LEDs is mounted to the printed wire board. The window is disposed in the opening hole in the control panel. A through-hole is formed in the window. The lights irradiated from the LEDs penetrate the window. The rotary knob is engaged with the rotational shaft of the rotary encoder, penetrates the through-hole of the window and protrudes to the front side of the control panel. A shaft through-hole through which the rotational shaft of the rotary encoder passes and a cell surrounding the circumference of the LEDs are formed in the LED supporter. A control panel assembly of the washing machine has a guide rib guiding the inner periphery of the rotary knob and the outer periphery of the rotary knob.

Description

Control apparatus of washing machine

1 is a perspective view of a washing machine according to the prior art,

2 is an internal configuration diagram showing a washing machine according to the prior art,

3 is an exploded perspective view of an embodiment of a control device of a washing machine according to the present invention;

4 is a cross-sectional view of the main part of an embodiment of a control device of a washing machine according to the present invention;

5 is a sectional view of essential parts of another embodiment of a control device of a washing machine according to the present invention;

6 is a cross-sectional view of the main part of another embodiment of a control device of a washing machine according to the present invention.

<Explanation of symbols on main parts of the drawings>

50: control panel 52: opening hole

60: window 68: through hole

70: coating guide 80: printed wiring board

82: rotary encoder 84: axis of rotation

86: rotary knob 90: LED

100: LED supporter 102: cell

120: inner rib 122: outer rib

The present invention relates to a control device for a washing machine, and more particularly, to a control device for a washing machine in which guide ribs for guiding the inner and outer circumferences of the rotary knob are protruded to limit radial shaking of the rotary knob.

In general, a washing machine is a device for washing laundry through a process of washing, rinsing, and dehydrating to remove contamination from clothes, bedding, and the like accommodated in the drum by using the water and detergent supplied into the tub.

1 is a perspective view showing a washing machine according to the prior art, Figure 2 is an internal configuration diagram showing a washing machine according to the prior art.

In the washing machine according to the related art, as shown in FIGS. 1 and 2, the cabinet 2 having the front and the upper and lower sides thereof is vertically disposed on the upper side of the base fan 1, and is disposed between both sides of the cabinet 2. The tub 4 in which the wash water is placed is positioned, and the top cover 5 is disposed on the upper surface of the cabinet 4.

The tub 4 is bufferably supported by a spring 3a provided between the cabinet 2 or a damper 3b provided between the base fan 1 and the tub 4 of the tub 4. A water supply device 6 for supplying water or detergent to the inside is connected, and a drainage device 7 for draining water in the tub 4 is connected.

In addition, the tub (4) is equipped with a motor (8) having a rotary shaft protruding into the tub (4), the drum 10 is connected to the rotary shaft for receiving laundry.

The drum 10 is formed with a plurality of hands 9 so that water or detergent in the tub 4 can be soaked in the laundry, and a lifter 11 for lifting and dropping the received laundry to a predetermined height on an inner circumferential surface thereof. It is mounted to protrude.

Meanwhile, a cabinet cover 12 having a laundry inlet through which laundry can be introduced into the drum 10 and a door 13 for opening and closing the laundry inlet are rotatably mounted on the front side of the cabinet 2. ) Is placed.

The washing machine is provided with a control device 20 for the user to operate the washing machine.

The control device 20 is provided with various switches for operating the operation of the washing machine and the like and various display parts for displaying the operation of the washing machine.

Recently, a number of rotary switches 34 including a rotary encoder and a rotary knob are installed so that various operation options can be selected with a single switch, and a plurality of displays displaying the options selected by the rotary knob in the vicinity of the rotary encoder are provided. Light emission diodes (hereinafter referred to as "LEDs") and LED supporters for protecting the plurality of LEDs are being installed.

Patent Document 10-2005-0086200 discloses a control device for a washing machine in which a protrusion is formed on the front of the LED supporter to contact the rear portion of the rotary knob so that the rear portion of the rotary knob does not flow back and forth between the rear of the window and the front of the protrusion. It is.

However, the control device of the washing machine according to the prior art, since the rotary knob is limited only forward and backward flow by the projection and the radial flow is not limited, there is a problem that the radial shake caused by the play between the rotary knob and the LED supporter may occur. There is this.

In addition, when a radial shake occurs in the rotary knob, a shake tension may be generated in the rotary encoder, thereby causing malfunction of the rotary encoder and shortening the life of the rotary encoder.

The present invention has been made to solve the above problems of the prior art, to provide a control device of the washing machine to improve the rotational operation feeling by not only shake the outer periphery of the rotary knob but also the inner periphery so as not to shake in the radial direction of the rotary knob. Its purpose is to.

Another object of the present invention is to provide a control device for a washing machine, which prevents the encoder from shaking when the rotary knob is shaken in the radial direction, thereby preventing malfunction of the rotary encoder and extending the life of the rotary encoder.

The control device of the washing machine according to the present invention for solving the above problems is a control panel formed with an opening hole; A printed wiring board provided with a rotary encoder and mounted with a plurality of LEDs; A window disposed in the opening hole formed in the control panel and having a through hole formed therein, and through which light emitted from each of the LEDs is transmitted; A rotary knob coupled to the rotary shaft of the rotary encoder and protruding forward of the control panel through a through hole of the window; In the control device of the washing machine comprising an LED supporter is formed each of the shaft through-hole through which the rotary shaft of the rotary encoder and the cell portion surrounding the LED, wherein the LED supporter is the inner circumference of the rotary knob and the outside of the locking jaw It is characterized in that the guide ribs are guided around the perimeter.

The guide rib may include an inner rib for guiding the inner circumference of the rotary knob and an outer rib for guiding the outer circumference of the locking jaw.

The guide rib is characterized in that the cross section protrudes in the 'U' shape.

The control device of the washing machine according to the present invention includes a control panel having an opening hole; A printed wiring board provided with a rotary encoder and mounted with a plurality of LEDs; A window disposed in the opening hole formed in the control panel and having a through hole formed therein, and through which light emitted from each of the LEDs is transmitted; A rotary knob coupled to the rotary shaft of the rotary encoder and protruding forward of the control panel through a through hole of the window; In the control device of the washing machine comprising an LED supporter each formed with a shaft through-hole through which the rotary shaft of the rotary encoder is penetrated and the cell portion surrounding the LED, wherein the LED supporter is such that the cell portion guides the outer circumference of the locking jaw. It protrudes, characterized in that the inner rib protruding to guide the inner circumference of the rotary knob.

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

3 is an exploded perspective view of an embodiment of a control device of a washing machine according to the present invention, Figure 4 is a cross-sectional view of the main part of a control device of an embodiment of the washing machine according to the present invention.

As shown in FIGS. 3 to 4, the control apparatus of the washing machine according to the present embodiment includes a control panel 50, a window 60, a coating guide 70, a printed wiring board 80, It is configured to include an LED supporter (100).

The control panel 50 has an open rear surface, and is formed in a rectangular box shape as a whole, and an opening hole 52 for arranging the window 60 is formed in the front portion 51.

A plurality of fastening bosses 54 and 56 are formed in the control panel 50 so that the coating guide 70 can be fastened with a plurality of screws 71 and 72.

The window 60 has a locking projection 62 protrudingly formed around the opening hole 52 of the control panel 50 to be stepped forward.

The window 60 allows the light irradiated from the LED 90 installed on the printed wiring board 80 to move forward and displays information indicated by the irradiated light, and is a transparent plastic to transmit the irradiated light. It is also possible to have a transparent portion 66 formed only of the front portion of the LED 90 is formed of an injection molding, the printed matter 64 is engraved on the front portion of the LED 90 in the back portion of the LED 90, It is also possible to include a deco (not shown) having a plurality of transmission holes, and an LED window installed in the deco (not shown) and the light transmission projection is inserted into the transmission hole, respectively, for convenience of description below The description will be made with the whole being made of a transparent plastic injection molding and the printed matter 64 being printed.

The window 60 is formed with a through hole 68 through which a rotary knob 86 to be described later is rotatably penetrated.

The coating guide 70 has a plurality of fastening pieces 77 and 78 protruding from the fastening bosses 54 and 56 of the control panel 50 by screws 71 and 72.

The printed wiring board 80 is provided with a rotary encoder 82 capable of selecting various driving commands with one switch, and a plurality of LEDs 90 displaying various driving information of the washing machine.

The rotary encoder 82 is provided with a plurality of switching circuits, the rotary shaft 84 for selectively connecting the plurality of switching circuits are installed to protrude forward.

A rotary knob 86 for rotating the rotary shaft 84 is connected to the rotary shaft 84 of the rotary encoder 82.

The rotary knob 86 has a peripheral portion slightly smaller than the through hole 68 of the window 60.

The rotary knob 86 is formed in a cylindrical shape as a whole, the front portion is formed flat.

The rotary knob 86 has a ring-shaped locking projection 88 protrudingly formed around the rear portion of the circumference so as to be forwardly circumscribed around the through hole 68 of the window 60.

On the other hand, the rotary knob 86 is formed so that the shaft insertion portion 87 is inserted into the rotary shaft 84 of the rotary encoder 82 is projected to the rear.

The plurality of LEDs 90 are installed in a substantially circular shape on the circumferential side of the rotary encoder 82.

The plurality of LEDs 90 display information of the operation selected by the rotary encoder 82. When a specific operation command is selected by the rotation of the rotary knob 86, only the LEDs corresponding to the selected operation command are displayed. Power is applied to emit light.

That is, when the plurality of LEDs 90 rotate the rotary knob 86 in a clockwise or counterclockwise direction, the plurality of LEDs 90 turn on / flash sequentially with the rotation of the rotary knob 86, When the rotation is stopped, only the LED 90 corresponding to the operation command indicated by the stopped rotary knob 86 remains lit.

The LED supporter 100 is provided with a plurality of cells 102 surrounding the periphery of each of the plurality of LEDs 90.

In the LED supporter 100, the cell units 102 are sequentially formed in a shape in which the plurality of LEDs 90 are disposed.

That is, the LED supporter 100 is formed in a circular shape of the cells 102 as a whole.

The LED supporter 100, the plate portion 110 is formed in the inner position of the cell portion 102 to cover the rotary encoder 82.

The plate portion 110 is formed with a shaft through-hole 112 through which the rotary shaft 84 of the rotary encoder 82 passes.

The LED supporter 100 is formed with guide ribs 120 and 122 that guide the inner circumference of the rotary knob 86 and the outer circumference of the locking jaw 88.

The guide ribs 120 and 122 include an inner rib 120 for guiding the inner circumference of the rotary knob 86 and an outer rib 122 for guiding the outer circumference of the locking jaw 88.

The inner rib 120 and the outer rib 122 are formed to protrude forward on the front surface of the plate 110.

The inner rib 120 is formed in a circular shape such as a rear inner circumference of the rotary knob 86 and has a diameter slightly smaller than the inner circumference of the rear knob of the rotary knob 86.

The outer rib 122 is formed in a circular shape such as the outer circumference of the locking projection 88 of the rotary knob 86.

Looking at the operation of the present invention configured as described above are as follows.

First, when the user rotates the rotary knob 86 in the clockwise or counterclockwise direction, the rotary knob 86 is guided to the outer circumferential surface of the inner rib 120 and the locking jaw ( The outer circumference of the 88 is guided to the inner circumferential surface of the outer rib 122 while being radially caught by the inner rib 120 and the outer rib 122 so as to rotate smoothly without shaking in the radial direction.

When the rotary knob 86 is rotated, the rotary shaft 84 of the rotary encoder 82 is rotated together with the rotary knob 84, and the rotary encoder 82 is changed in its switching circuit. The washing machine receives a command selected by the switching of the switching circuit.

In addition, when the washing machine selects the driving command as described above, power is input to the LED 90 corresponding to the selected driving command, and the light irradiated from the LED 90 is transparent to the transparent part 66 of the window 60. ) Is irradiated forward.

5 is a sectional view of an essential part of another embodiment of a control device of a washing machine according to the present invention.

As shown in FIG. 5, in the control device of the washing machine according to the present embodiment, a guide rib 130 having a U-shaped cross section is formed in the LED supporter 100, and the guide rib 130 is formed. Other configurations and actions other than the shape of are the same as in the embodiment of the present invention use the same reference numerals and detailed description thereof will be omitted.

The guide rib 130 includes an inner rib 132 for guiding the inner circumference of the rotary knob 86, an outer rib 134 for guiding the outer circumference of the locking jaw 88, and the locking jaw 88. It consists of a back guide 136, the back portion 88a of the guide.

The guide rib 130 is formed in an annular shape as a whole.

In the control device of the washing machine according to the present embodiment, when the rotary knob 86 is rotated, the inner circumference of the rotary knob 86 is guided to the inner rib 132 and the outer circumference of the locking jaw 88 is the outer rib 134. ) Is guided in the radial direction, and the back portion 88a of the locking jaw 88 is guided to the back guide portion 136, thereby limiting the shake in the front-rear direction.

6 is a cross-sectional view of the main part of another embodiment of a control device of a washing machine according to the present invention.

As shown in FIG. 6, the control device of the washing machine according to the present embodiment protrudes so that the cell unit 102 guides the outer circumference of the locking jaw 88 to the LED supporter 100. An inner rib 120 guiding the inner circumference is formed to protrude, and the other configuration and operation are the same as in the embodiment of the present invention, and the same reference numerals are used and detailed description thereof will be omitted.

Since the control device of the washing machine according to the present embodiment does not need the outer rib 122 of the present invention or another embodiment, the structure is simple and the molding of the LED supporter 100 is easy.

In the control device of the washing machine according to the present invention configured as described above, the guide support ribs are formed in the LED supporter guides the inner circumference of the rotary knob and the outer circumference of the locking jaw of the rotary knob, thereby limiting the radial shaking of the rotary knob, It improves the rotational operation of the knob, prevents the vibration tension of the encoder generated when the rotary knob is shaken in the radial direction to prevent malfunction of the rotary encoder and has a long life of the rotary encoder.

In addition, the control device of the washing machine of the present invention has an advantage in that the guide rib protrudes in a 'U' shape, so that the back portion of the locking jaw can also be guided together, thereby limiting the shaking in the front-rear direction.

In addition, the control device of the washing machine of the present invention is protruded so that the cell portion guides the outer circumference of the locking jaw, and an inner rib guiding the inner circumference of the rotary knob is formed to protrude, so that the structure is simple and the shape of the LED supporter can be easily formed. have.

Claims (4)

A control panel having an opening hole; A printed wiring board provided with a rotary encoder and mounted with a plurality of LEDs; A window disposed in the opening hole formed in the control panel and having a through hole formed therein, and through which light emitted from each of the LEDs is transmitted; A rotary knob coupled to the rotary shaft of the rotary encoder and protruding forward of the control panel through a through hole of the window; In the control device of the washing machine comprising an LED supporter each formed with a shaft through hole through which the rotary shaft of the rotary encoder passes and the cell portion surrounding the LED, The LED supporter is a control panel assembly of the washing machine, characterized in that the guide ribs are formed to guide the inner circumference of the rotary knob and the outer circumference of the locking jaw. The method of claim 1, The guide rib is a control panel assembly of the washing machine comprising an inner rib for guiding the inner circumference of the rotary knob and an outer rib for guiding the outer circumference of the locking jaw. The method of claim 1, The guide rib is a control panel assembly of the washing machine, characterized in that the cross section protrudes in the shape of a 'U'. A control panel having an opening hole; A printed wiring board provided with a rotary encoder and mounted with a plurality of LEDs; A window disposed in the opening hole formed in the control panel and having a through hole formed therein, and through which light emitted from each of the LEDs is transmitted; A rotary knob coupled to the rotary shaft of the rotary encoder and protruding forward of the control panel through a through hole of the window; In the control device of the washing machine comprising an LED supporter each formed with a shaft through hole through which the rotary shaft of the rotary encoder passes and the cell portion surrounding the LED, The LED supporter is a control panel assembly of the washing machine, characterized in that the cell portion protrudes to guide the outer circumference of the locking jaw, the inner rib for guiding the inner circumference of the rotary knob is formed.

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