KR20150051011A - Washing machine - Google Patents

Abstract

Disclosed is a washing machine having an improved structure to enable users to easily adjust the height and horizontality of the washing machine. According to the present invention, the washing machine includes a leg installed in the rear side of the bottom of a cabinet which forms the outer shape to adjust the horizontality. The leg may comprise: a rod facing the ground to be extended towards the inside of the cabinet; a bracket joined to the outer circumference of the rod to move along the rod; a worm wheel joined to the outer side of the bracket to integrally rotate with the bracket; a worm gear joined to the worm wheel to transmit a driving force for rotating the worm wheel; a shaft which is extended from the worm gear towards the front side of the cabinet and provides a driving force for rotating the worm wheel for the worm gear; and a case which accepts the worm wheel and the worm gear inside and is joined to the cabinet to be integrally moved with the cabinet.

Description

Washing machine {WASHING MACHINE}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a washing machine, and more particularly, to a washing machine having an improved structure so that a user can easily adjust the height and the horizontal of the washing machine.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine, and more particularly, to a washing machine for washing clothes using electric power. The washing machine includes a cabinet forming an outer appearance of a washing machine, a tub for storing wash water in the cabinet, a drum rotatably installed in the tub, And a motor for driving the motor.

When the drum is rotated by the motor in a state where the laundry and washing water are supplied into the drum, the laundry is rubbed against the drum and the washing water, and the laundry is removed from the laundry.

The washing machine generally has a hexahedral shape, and a plurality of legs are installed at four corners to support the washing machine. A plurality of legs are installed in the washing machine in a bolt manner. When the washing machine is rotated in one direction, the length is extended. When the washing machine is rotated in the other direction, the length is shortened so that the height and the horizontal of the washing machine can be controlled.

When the legs are rotated using a tool such as a spanner to adjust the height and the level of the washing machine, the space between the bottom surface of the cabinet and the ground may be narrow and workability may be deteriorated and the load of the washing machine must be raised. A large force is required. Also, as the cabinet moves up and down along the legs, vibration and noise may occur.

One aspect of the present invention provides a washing machine having a structure in which workability is improved so that a user can easily adjust the height and the level of the legs positioned at the front and rear of the cabinet.

Another aspect of the present invention provides a washing machine having an improved structure for improving the durability of the leg by dispersing the load of the cabinet.

A washing machine according to an embodiment of the present invention includes a leg provided at the rear of a bottom surface of a cabinet forming an outer appearance for adjusting the level, the leg having a rod facing the ground so as to extend toward the inside of the cabinet, A worm wheel coupled to an outer side of the bracket and rotating integrally with the bracket, a worm gear (WORM) coupled to the worm wheel for transmitting a driving force to rotate the worm wheel, A shaft which extends from the worm gear toward the front of the cabinet and provides a driving force for rotating the worm wheel to the worm gear, and a worm gear which houses the worm wheel and the worm gear in the cabinet, And a case coupled to the cabinet to move integrally.

A first screw thread is formed on an outer circumferential surface of the rod, and an inner circumferential surface of the bracket is formed with a first thread groove that engages with the first screw thread so that the bracket moves up and down along the rod.

The first thread may be formed along the circumference of the rod to form at least one section in the longitudinal direction of the rod.

A load hole having the same cross section as the rod is formed on a bottom surface of the case, and the rod can be coupled to the bracket through the rod hole.

The bracket may include a locking portion extending in a radial direction, and the worm wheel may be coupled to the bracket such that a locking hole having a shape corresponding to the locking portion faces the outer peripheral surface of the locking portion.

The worm gear has a second thread groove formed on an outer circumferential surface thereof and having a shape corresponding to a second thread formed on an outer circumferential surface of the worm wheel, and the worm gear can rotate about an axis passing through the worm gear.

The shaft may include a body inserted into a through hole formed in the worm gear and having a protrusion protruding in a radial direction of the shaft on an outer circumferential surface thereof.

An extension extending toward the front of the cabinet in the worm gear is formed with a coupling groove recessed toward the rear of the cabinet. The projection may be coupled to the coupling groove so that the worm gear rotates integrally with the shaft.

The shaft may further include a head extending from the body toward the front of the cabinet and having a depression recessed toward the rear of the cabinet so as to engage one end of the shaft.

The shaft may be received within the tube to prevent contamination by external foreign matter.

A washing machine according to an embodiment of the present invention includes a leg which is installed at the rear side of a bottom surface of a cabinet forming an external appearance and regulates the level of the cabinet, and the leg is fixed to the ground so as to extend toward the inside of the cabinet, A worm wheel coupled to the first bracket and rotating integrally with the first bracket, a worm gear engaged with the worm wheel so as to be rotatable about a shaft, A worm gear, a shaft which is coupled to the shaft so as to rotate integrally with the worm gear toward the rear of the cabinet, the other end facing the front of the cabinet is exposed to the outside, And a case coupled to the cabinet inner circumferential surface to receive the worm gear and move integrally with the cabinet.

A first screw thread is formed on the outer circumferential surface of the rod and a first screw thread corresponding to the first screw thread is formed on the inner circumferential surface of the first bracket so that the first bracket moves up and down along the rod.

The first thread is formed along the circumference of the rod to form at least one groove in the longitudinal direction of the rod, and the at least one groove may be recessed toward the inside of the rod.

A second screw groove having a shape corresponding to a second screw thread formed on an outer circumferential surface of the worm wheel is formed on an outer circumferential surface of the worm gear and the shaft can rotate integrally with the worm gear through the worm gear.

At one end of the shaft facing the front of the cabinet is formed a recess depressed toward the rear of the cabinet, and the shaft can be coupled to the depression so as to rotate integrally with the shaft and the worm gear.

A case hole through which the shaft passes may be formed on one side of the case toward the rear of the cabinet, and the rod may be coupled to the first bracket through a rod hole formed in the case bottom surface.

The first bracket may include a locking portion extending in a radial direction, and the worm wheel may be coupled to the first bracket so as to face an outer circumferential surface of the locking portion.

The leg may further include a second bracket coupled to an outer circumferential surface of the first bracket, and an elastic member may be disposed between the second bracket and the worm wheel.

The second bracket may be integrally formed with the cabinet so as to protrude toward the inside of the cabinet.

By adjusting the height and the horizontal of the leg located at the rear of the cabinet by using a shaft coupled to a shaft that rotates integrally with the worm gear, user's work convenience can be improved.

By increasing the contact surfaces of the first bracket and the rod, it is possible to prevent the load caused by the weight and vibration of the cabinet from being concentrated on the first bracket and the worm wheel, thereby improving the durability of the whole leg.

1 is a perspective view illustrating an appearance of a washing machine according to an embodiment of the present invention;
2 is a cross-sectional view illustrating a configuration of a washing machine according to an embodiment of the present invention.
FIG. 3 is a perspective view of an enlarged portion of a part of a washing machine according to an embodiment of the present invention,
4 is a bottom view showing a bottom surface of a washing machine according to an embodiment of the present invention.
FIG. 5 is a perspective view showing a state where legs positioned in front of a cabinet according to an embodiment of the present invention are coupled to a cabinet;
Figure 6 is an exploded perspective view of the leg of Figure 5;
7 is a cross-sectional view of the leg of Fig. 5
8 is an exploded perspective view showing the leg of Fig.
FIG. 9 is a perspective view showing a state where legs positioned at the rear of a cabinet according to an embodiment of the present invention are coupled to a cabinet;
Fig. 10 is an exploded perspective view showing the leg of Fig.
Figure 11 is an exploded perspective view of the leg of Figure 9;
FIG. 12 is a perspective view showing a state where legs positioned at the rear of a cabinet according to another embodiment of the present invention are coupled to a cabinet;

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

FIG. 1 is a perspective view showing the appearance of a washing machine according to an embodiment of the present invention, and FIG. 2 is a sectional view showing the construction of a washing machine according to an embodiment of the present invention. FIG. 3 is an enlarged perspective view of a part of a washing machine according to an embodiment of the present invention, and FIG. 4 is a bottom view illustrating a bottom surface of the washing machine according to an embodiment of the present invention.

1 to 4, the washing machine 1 includes a cabinet 10 for forming an outer appearance thereof, a tub 20 for receiving washing water or rinse water to be used for a washing or rinse cycle, And a driving motor 7 for rotating the drum 30 and the drum 30.

The cabinet 10 is provided with a control panel 80 including input portions 81a and 81b for receiving an operation command of the washing machine 1 from a user and a display portion 83 for displaying operation information of the washing machine 1.

The input units 81a and 81b receive commands from the user relating to the operation of the washing machine 1 such as the washing time, the number of times of rinsing, the dewatering time, the drying time, the operation and the pause, and the pressing button 81a or the rotary button 81b, Can be adopted. The display unit 83 displays information related to the operation of the washing machine 1 such as the amount of the washing water, the stroke during which the washing machine 1 is performing, the time remaining until the washing is finished, , A light emitting diode (LED) panel, and the like.

The washing machine 1 according to the embodiment of the present invention is provided with the input units 81a and 81b and the display unit 83 separately but is not limited thereto and employs a touch screen panel (TSP) May be integrally provided.

The cabinets 10 include frames 10a, 10b, 10c and 10d, and the frames 10a, 10b, 10c and 10d are respectively composed of a top frame 10a constituting the upper surface of the cabinet, A side frame (not shown) and a bottom frame (not shown) which connect the front and rear frames 10b and 10c and form a side surface and a bottom surface of the cabinet 10, 10d.

In the front frame 10b of the cabinet 10, an inlet 2a is formed to allow laundry to be introduced into the drum 30. The inlet 2a is opened and closed by a door 70 provided on the front frame 10b of the cabinet 10. [

A spring 17 may be provided between the tub 20 and the cabinet 10 to support the tub 20 from above. The spring 17 serves to mitigate vibrations and noise caused by the flow of the tub 20 due to the elastic force.

A water supply pipe (13) for supplying wash water to the tub (20) is installed at an upper portion of the tub (20). A water supply valve (14) is installed at one side of the water supply pipe (13).

The detergent supply device 100 is connected to the tub 20 through a connection pipe 16. Water supplied through the water supply pipe (13) is supplied to the inside of the tub (20) together with the detergent via the detergent supply device (100).

The tub 20 is supported by a damper 150. The damper 150 connects the inner bottom surface of the cabinet 10 and the outer surface of the tub 20. The damper 150 may be positioned on the upper side, left side, and right side of the cabinet 10 so as to support the tub 20. The damper 150 or the spring 17 can mitigate vibrations and shocks generated by the upward and downward flows of the tub 20 in the upper and lower portions of the tub 20. [

The tub 20 may be supported by at least one damper 150.

A driving shaft (11) for transmitting the power of the motor (7) is connected to the rear surface of the drum (30). Around the drum 30, a plurality of through holes 27 for circulating laundry water are formed. A plurality of lifters 26 are installed on the inner circumferential surface of the drum 30 to allow the laundry to rise and fall when the drum 30 rotates.

A drive shaft (11) is disposed between the drum (30) and the motor (7). One end of the drive shaft 11 is connected to the rear plate of the drum 30 and the other end of the drive shaft 11 extends to the outside of the rear wall of the tub 20. When the motor 7 drives the drive shaft 11, the drum 30 connected to the drive shaft 11 rotates about the drive shaft 11.

On the rear wall of the tub 20, a bearing housing 8 is installed to rotatably support the drive shaft 11. The bearing housing 8 may be made of aluminum alloy and may be inserted into the rear wall of the tub 20 when the tub 20 is injection molded. Bearings 9 are provided between the bearing housing 8 and the drive shaft 11 so that the drive shaft 11 can rotate smoothly.

A drain pump 4 for discharging the water inside the tub 20 to the outside of the cabinet 10 and a drain pump 4 for allowing the water inside the tub 20 to flow into the drain pump 4 A connecting hose 3 for connecting the tub 20 and the drain pump 4 and a drain hose 5 for guiding the water pumped by the drain pump 4 to the outside of the cabinet 10 are provided.

A plurality of legs 1000 and 1100 may be installed on the bottom surface of the cabinet 10.

The plurality of legs 1000 and 1100 may include a plurality of legs 1000 positioned in front of the cabinet 10 and a plurality of legs 1100 located rearward of the cabinet 10.

At least one of the plurality of legs 1000 positioned in front of the cabinet 10 may be provided with a worm gear 500 and a worm wheel 400 to adjust the height and the horizontal of the washing machine. At least one of the plurality of legs 1100 located behind the cabinet 10 is provided with a worm gear 500, a worm wheel 400, and a worm gear 500 for adjusting the height and the horizontal of the washing machine 1 in front of the cabinet 10, A shaft 700 may be provided. The shaft 700 can be wrapped outside by the tube 710 and the tube 710 can be coupled to the cabinet 10 by the coupling box 730. The operation of the worm gear 500, the worm wheel 400, and the shaft 700 for adjusting the height and the horizontal of the washing machine 1 will be described later.

FIG. 5 is a perspective view showing a state where legs positioned in front of a cabinet according to an embodiment of the present invention are coupled to a cabinet, and FIG. 6 is an exploded perspective view showing the legs of FIG. FIG. 7 is a cross-sectional view of the leg of FIG. 5, and FIG. 8 is an exploded perspective view of the leg of FIG. The first bracket 300 may be used in the same sense as the bracket.

The leg 1000 may include a rod 200, a first bracket 300, a worm wheel 400, a worm gear 500, and a case 800.

The rod 200 may be fixed to the ground so as to extend toward the inside of the cabinet 10. The base block 230 may be provided at one end of the rod 200 facing the ground and the base block 230 may be formed of a material for absorbing vibrations and noise of the washing machine 1. [

The first thread 210 may be formed on the outer circumferential surface of the rod 200. The first thread 210 may be formed along the circumference of the rod 200 to form at least one cut surface 220 in the longitudinal direction of the rod 200. The first threads 210 formed on the rod 200 may be formed discontinuously along the circumference of the rod 200. [ As an embodiment, the cross section of the rod 200 may have the "D" shape. The first thread 210 may be formed in the longitudinal direction of the rod 200 along the curved portion in the cross section of the rod 200 and the cut surface 220 may be formed along the flat portion in the cross section of the rod 200 200 in the longitudinal direction. The cross section of the rod 200 is not limited to the "D" shape.

In addition, the first threads 210 may be formed along the circumference of the rod 200 to form at least one groove (not shown) in the longitudinal direction of the rod 200. At least one groove may have a recessed shape toward the inside of the rod 200. The shape of the first screw thread 210 is not limited to the above example, but may be various.

The first bracket 300 may be coupled to the outer circumferential surface of the rod 200 so as to be movable up and down along the rod 200. The first bracket 300 may include a body 330 and an engaging portion 340. The latching portion 340 extends in the radial direction of the body 330 and is coupled to the fastening hole 420 formed in the worm wheel 400. The body 330 may have a cylindrical shape and the engaging portion 340 may have a polygonal shape. However, the shapes of the body 330 and the engaging portion 340 are not limited thereto. The body 320 and the latch 340 of the first bracket 300 may be provided with a hollow 320 through which the rod 200 can pass. A first screw groove 310 may be formed on the inner circumferential surface of the hollow portion 320 to engage with the first screw thread 210 of the rod 200. The first threaded groove 310 may be continuously formed along the inner circumferential surface of the hollow 320 without the cut surface 220 or groove.

The worm wheel 400 may include a fastening hole 420 having a shape corresponding to the fastening portion 340 of the first bracket 300. The worm wheel 400 and the first bracket 300 are integrally rotated as the fastening holes 420 are coupled to the outside of the fastening portions 340. [ A second thread 410 may be formed on the outer circumferential surface of the worm wheel 400.

The worm gear 500 may engage with the worm wheel 400 to provide a driving force for rotating the worm wheel 400. Specifically, a second thread groove 510 having a shape corresponding to the second thread 410 of the worm wheel 400 is provided on the outer peripheral surface of the worm gear 500. The worm gear 500 and the worm wheel 400 are rotatable so that the second thread 410 and the second thread groove 510 are engaged with each other. The worm gear 500 can rotate about an axis 600 passing through the through hole 540 formed in the worm gear 500.

The shaft 600 may include a body 610 and a head 620.

The body 610 is inserted into the through hole 540 of the worm gear 500 and a protrusion 630 protruding in the radial direction of the shaft 600 may be formed on the outer circumferential surface of the body 610. The protruding portion 630 is engaged with the coupling groove 530 formed in the extended portion 520 extending toward the front of the cabinet 10 from the worm gear 500. The worm gear 500 and the shaft 600 can rotate integrally with each other by engaging the protruding portion 630 with the engaging groove 530. As a result, Do.

The head 620 extends from the body 610 toward the front of the cabinet 10. The head 620 may be provided with a recessed portion () which is recessed toward the rear of the cabinet 10. A tool (not shown) may be inserted into the depression 640 to provide a rotational force to the shaft 600.

The case 800 accommodates the worm wheel 400 and the worm gear 500 therein and is coupled to the cabinet 10 and moves together with the cabinet 10 along the rod 200. Specifically, the case 800 is provided with a receiving space 810 capable of accommodating the worm wheel 400 and the worm gear 500, and a rod hole 820 is formed so that the rod 200 can pass therethrough . The rod hole 820 may have a shape corresponding to the cross section of the rod 200.

The shaft 600 coupled to the through hole 540 of the worm gear 500 can also be received in the receiving space 810 of the case 800. [ Specifically, the head 620 of the shaft 600 is seated in the seating portion 850 facing the front of the cabinet 10 and is exposed to the outside, and one end of the body 610 of the shaft 600 is exposed to the outside of the cabinet 10 Through the case hole 830 facing the rear of the case 830.

At the upper end of the case 800, a plurality of fixing pieces 840 extending outwardly from the case 800 may be provided. The plurality of fixing pieces 840 may be provided with a plurality of fixing holes 841 to which the fixing members are coupled so that the case 800 is coupled to the cabinet 10 by a fixing member (not shown).

The case 800 may be coupled to the outer or inner surface of the cabinet 10. [ The worm wheel 400, the worm gear 500, and the shaft 600 may be located inside the cabinet 10 when the case 800 is coupled to the inner surface of the cabinet 10. [

The leg 1000 may further include a second bracket 950.

The second bracket 950 can be coupled to the outer circumferential surface of the first bracket 300. The elastic member 900 may be positioned between the second bracket 950 and the worm wheel 400 coupled to the latching portion 340 of the first bracket 300. The elastic member 900 can prevent the worm wheel 400 coupled to the second bracket 950 and the engaging portion 340 from being worn. The elastic member 900 may be provided with an opening hole 910 through which the body 330 of the first bracket 300 can pass.

The second bracket 950 may be integrally formed with the cabinet 10 so as to protrude toward the inside of the cabinet 10, but is not limited thereto.

The process of adjusting the height and the level of the washing machine 1 with the leg 1000 positioned in front of the cabinet 10 is as follows.

The worm wheel 400 is rotated by engaging with the worm gear 500 and the first bracket 300 coupled to the worm wheel 400 rotates along the rod 200. Specifically, when the worm gear 500 is rotated clockwise, the worm wheel 400 rotates counterclockwise, and the first bracket 300 rotates counterclockwise integrally with the worm wheel 400, 10 and the base block 230 is increased. When the worm gear 500 is rotated in the counterclockwise direction, the worm wheel 400 rotates clockwise, and the first bracket 300 rotates integrally with the worm wheel 400 in a clockwise direction, The degree of separation of the block 230 is reduced. The first thread 210 formed on the rod 200 is engaged with the first thread groove 310 formed in the first bracket 300 and the second screw thread 310 formed on the first bracket 300 is inserted into the second thread groove 310, Horizontal and elevation are maintained.

FIG. 9 is a perspective view illustrating a state that a leg located at the rear of a cabinet is coupled to a cabinet according to an embodiment of the present invention, and FIG. 10 is an exploded perspective view illustrating the leg of FIG. 11 is an incision oblique view showing the leg of Fig. Hereinafter, description overlapping with those described in Figs. 1 to 8 will be omitted.

9-11, the legs 1100 located behind the cabinet 10 include a rod 200, a first bracket 300, a worm wheel 400, a worm gear (not shown) A WORM GEAR 500, a case 800, and a shaft 700.

The shaft 700 can provide the worm gear 500 with the driving force for rotating the worm wheel 400. One end of the shaft 700 facing the rear of the cabinet 10 is coupled to a depression 640 formed in the head 620 of the shaft 600 to rotate integrally with the worm gear 500, The other end of the shaft 700 facing toward the front of the shaft 700 may be exposed to the outside. A tool engagement hole 720 may be formed at the other end of the shaft 700 exposed to the outside to rotate the shaft 700 with a tool (not shown).

Shaft 700 may be received within tube 710. The tube 710 can prevent the shaft 700 coupled to the cabinet 10 from being damaged by the vibration of the cabinet 10. In addition, it is possible to prevent the shaft 700 from being contaminated by external foreign matter. The tube 710 may comprise a material such as rubber and silicone to absorb the impact.

A guide 860 protruding toward the front of the cabinet 10 is formed on one side of the case 800 on which the seating portion 850 is formed. The tube 710 in which the shaft 700 is located is introduced into the guide 860 and engages with the head 620 of the shaft 600 which is seated in the seating portion 850. At this time, the shaft 700 is inserted into the depression 640. The guide 860 may include a first guide 861 that wraps the tube 710 from above and a second guide 862 that wraps the tube 710 from the bottom.

At least one coupling box 730 may be coupled to the tube 710. A plurality of fixing holes 731 may be formed in at least one coupling box 730 and the tube 710 may be fixed to the cabinet 10 by a fixing member (not shown) passing through a plurality of fixing holes 731 Can be combined.

A process of adjusting the height and the level of the washing machine 1 with the leg 1100 located at the rear of the cabinet 10 is as follows.

When a rotational force is applied to the shaft 700, a rotational force is transmitted to the worm gear 500 moving integrally with the shaft 700. The worm wheel 400 rotates in engagement with the worm gear 500, The combined first bracket 300 rotates along the rod 200. Specifically, when the shaft 700 is rotated clockwise, the worm gear 500 rotates integrally with the shaft 700 in a clockwise direction, the worm wheel 400 rotates counterclockwise, and the first bracket 300 Is rotated integrally with the worm wheel 400 in a counterclockwise direction to increase the degree of separation between the cabinet 10 and the base block 230. When the shaft 700 is rotated counterclockwise, the worm gear 500 rotates counterclockwise integrally with the shaft 700, the worm wheel 400 rotates clockwise, and the first bracket 300 rotates clockwise The distance between the cabinet 10 and the base block 230 is reduced while rotating together with the worm wheel 400 in a clockwise direction. The first thread 210 formed on the rod 200 is engaged with the first thread groove 310 formed in the first bracket 300 and the second screw thread 310 formed on the first bracket 300 is inserted into the second thread groove 310, Horizontal and elevation are maintained.

FIG. 12 is a perspective view illustrating a state where legs located behind a cabinet are coupled to a cabinet according to another embodiment of the present invention. FIG.

The case 800 of the leg 1100a located at the rear of the cabinet 10 can be coupled to the inner surface of the cabinet 10 as shown in Fig. When the case 800 is coupled to the inner surface of the cabinet 10, the tube 710 surrounding the worm wheel 400, the worm gear 500, the shaft 600 and the shaft 700 is inserted into the cabinet 10 And a shaft coupling hole 740 may be formed on the front surface of the cabinet 10 facing forward so that a tool coupling hole 720 formed at one end of the shaft 700 is exposed to the outside.

The foregoing has shown and described specific embodiments. However, it should be understood that the present invention is not limited to the above-described embodiment, and various changes and modifications may be made without departing from the technical idea of the present invention described in the following claims .

1: washing machine 2a: inlet
3: Connection hose 4: Drain pump
5: drain hose 7: motor
8: Bearing housing 9: Bearing
10: cabinet 10a: upper frame
10b: front frame 10c: rear frame
10d: lower frame 11: drive shaft
13: Water supply pipe 14: Water supply valve
16: connector 17: spring
20: tub 26: lifter
27: through hole 30: drum
70: Door 80: Control panel
81a: Push button 81b: Rotary button
83: Display part 100: Detergent supply device
150: damper 200: rod
210: first screw thread 220:
230: base block 300: first bracket (bracket)
310: first screw groove 320: hollow
330: body 340:
400: Worm wheel 410: Second thread
420: fastening ball 500: worm gear
510: second screw groove 520: extension part
530: fastening groove 540: through hole
600: Axis 610: Body
620: head 630: protrusion
640: depression portion 700: shaft
710: tube 720: tool coupling port
730: Coupling box 731: Fixing hole
740: shaft coupling hole 800: case
810: Capacity space 820: Road hole
830: Case hole 840: Fixing piece
841: Fixing hole 850:
860: guide 861: first guide
862: second guide 900: elastic member
910: aperture hole 950: second bracket
1000: front leg 1100,1100a: rear leg

Claims (19)

1. A washing machine comprising: a leg which is provided at a rear side of a bottom surface of a cabinet forming an outer appearance and adjusts the level,
Wherein:
A rod facing the ground so as to extend toward the inside of the cabinet;
A bracket coupled to an outer circumferential surface of the rod to move along the rod;
A worm wheel coupled to an outer side of the bracket and rotated integrally with the bracket;
A worm gear engaged with the worm wheel to transmit a driving force to rotate the worm wheel;
A shaft extending from the worm gear toward the front of the cabinet and providing a driving force for rotating the worm wheel to the worm gear; And
And a case coupled to the cabinet to receive the worm wheel and the worm gear and move integrally with the cabinet. The method according to claim 1,
A first screw thread is formed on an outer peripheral surface of the rod,
And a first screw groove is formed on an inner circumferential surface of the bracket to engage with the first screw thread so that the bracket moves up and down along the rod. 3. The method of claim 2,
Wherein the first thread is formed along the circumference of the rod to form at least one section in the longitudinal direction of the rod. The method of claim 3,
A load hole having the same cross section as the rod is formed on a bottom surface of the case,
And the rod is coupled to the bracket through the rod hole. The method of claim 3,
Wherein the bracket includes a locking portion extending in a radial direction,
Wherein the worm wheel is coupled to the bracket such that a fastening hole having a shape corresponding to the fastening part faces an outer circumferential surface of the fastening part. 5. The method of claim 4,
A second screw groove having a shape corresponding to a second screw thread formed on an outer circumferential surface of the worm wheel is formed on an outer circumferential surface of the worm gear,
Wherein the worm gear rotates about an axis passing through the worm gear. The method according to claim 6,
Wherein the shaft includes a body inserted into a through hole formed in the worm gear and having a protrusion protruding in a radial direction of the shaft on an outer circumferential surface thereof. 8. The method of claim 7,
Wherein an extended portion extending from the worm gear toward the front of the cabinet is formed with a coupling groove recessed toward the rear of the cabinet,
And the protrusion is coupled to the coupling groove so that the worm gear rotates integrally with the shaft. 8. The method of claim 7,
Wherein the shaft further comprises a head extending from the body toward the front of the cabinet and having a depression recessed toward the rear of the cabinet for coupling one end of the shaft to the cabinet. The method according to claim 1,
Wherein the shaft is housed inside the tube to prevent contamination by external foreign matter. 1. A washing machine comprising: a leg which is provided at a rear side of a bottom surface of a cabinet forming an outer appearance and adjusts the level,
Wherein:
A rod fixed to the ground to extend toward the inside of the cabinet;
A first bracket coupled to an outer circumferential surface of the rod to move along the rod;
A worm wheel coupled to the first bracket and rotating integrally with the first bracket;
A worm gear engaged with the worm wheel so as to be rotatable about an axis;
A shaft which is coupled to the shaft at one end facing the rear of the cabinet so as to rotate integrally with the worm gear, and the other end toward the front of the cabinet is exposed to the outside; And
And a case coupled to the inner circumferential surface of the cabinet to receive the worm wheel and the worm gear and move integrally with the cabinet. 12. The method of claim 11,
A first screw thread is formed on an outer peripheral surface of the rod,
Wherein a first screw groove corresponding to the first screw thread is formed on an inner circumferential surface of the first bracket so that the first bracket moves up and down along the rod. 13. The method of claim 12,
Wherein the first thread is formed along the circumference of the rod to form at least one groove in the longitudinal direction of the rod,
Wherein the at least one groove is recessed toward the inside of the rod. 14. The method of claim 13,
A second screw groove having a shape corresponding to a second screw thread formed on an outer circumferential surface of the worm wheel is formed on an outer circumferential surface of the worm gear,
And the shaft rotates integrally with the worm gear through the worm gear. 15. The method of claim 14,
A concave depression portion is formed at one end of the shaft toward the front of the cabinet toward the rear of the cabinet,
Wherein the shaft is coupled to the depression so as to rotate integrally with the shaft and the worm gear. 16. The method of claim 15,
A case hole through which the shaft passes is formed on one side of the case toward the rear of the cabinet,
Wherein the rod is coupled to the first bracket through a rod hole formed in a bottom surface of the case. 17. The method of claim 16,
Wherein the first bracket includes a locking portion extending in a radial direction,
Wherein the worm wheel engages with the first bracket so as to face the outer circumferential surface of the engaging portion. 18. The method of claim 17,
The leg further includes a second bracket coupled to an outer circumferential surface of the first bracket,
And an elastic member is disposed between the second bracket and the worm wheel. 19. The method of claim 18,
And the second bracket is integrally formed with the cabinet so as to protrude toward the inside of the cabinet.

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