KR0139356Y1 - A driving apparatus of a washing machine - Google Patents

Abstract

The present invention relates to a driving device of a washing machine, the drive shaft 21 for selectively driving the pulsator 15 and the washing and dewatering tank 13 by receiving a driving force from the drive motor 7, and the drive shaft 21 It is connected directly to the upper end of the pellator shaft 23 for transmitting the rotational force to the pulsator, and the rotational force transmitted from the pulsator shaft 23 while decelerating the conversion and at the same time to prevent the malfunction caused by the foreign matter introduced The deceleration gear device 31 disposed inside the pulsator 15 and the washing water flows during washing so that the pulsator 15 is rotated by floating due to buoyancy and at the same time by self weight when dewatering. It is lowered, characterized in that made of buoyancy means 170 for rotating the pulsator 15 together with the washing and dehydration tank (13).

The present invention configured as described above is simple in structure and simple in structure, so that the number of parts can be reduced and the manufacturing cost can be reduced. In particular, the reduction gear unit can be accommodated inside the pulsator, thereby reducing the height of the pulsator shaft. Due to this, there is a very good effect that the washing machine can be compactized.

Description

Drive of washing machine

1 is a longitudinal sectional view schematically showing the configuration of a conventional fully automatic washing machine.

Figure 2 is a longitudinal sectional view showing a driving device of a conventional washing machine.

Figure 3 is a longitudinal sectional view schematically showing the configuration when washing the washing machine according to the present invention.

Figure 4 is a longitudinal sectional view schematically showing the configuration of the washing machine when dewatering according to the present invention.

* Explanation of symbols for main parts of the drawings

13: washing and dehydration tank 15: pulsator

21: drive shaft 23: pulsator shaft

31: reduction gear 102: first groove

103: second groove 120: clutch means

123: transfer member 141: connecting member

143: support member 145: ball bearing

147: guide member 161: reduction connector

170: buoyancy means 171: buoyancy axis

180: buoyancy bucket

The present invention relates to a driving device of a washing machine, and in particular, the reduction gear device is disposed inside the pulsator to reduce the height of the pulsator shaft, and also to wash and dehydrate according to the level of water level by buoyancy means located above the center of the pulsator It relates to a drive of the washing machine to perform.

In the conventional washing machine, as shown in FIG. 1 and FIG. 2, a plurality of suspension bars having one side hung on an upper portion of the main body 1 having an outer tub 5 storing laundry water so as to prevent vibration during washing and dehydration. A motor (7) suspended at a constant height through (3) and driven by a power source is mounted on the outer bottom surface of the outer tub (5), and the belt (9) is driven from the motor (7). The driving device 11 receiving the driving force is mounted on an outer bottom surface of the outer tub 5 to transmit power for washing or dehydrating laundry by driving a pulsator or a washing and dehydrating tank to be described later. The dehydration tank 13 is rotatably mounted in the outer tank 5 so as to dehydrate the laundry by centrifugal force generated by the rotation of the drive device 11.

In addition, the pulsator 15 for washing by forming a stream of water in the wash water contained in the washing and dewatering tank 13 receives the power of the motor 7 via the drive device 11 to reverse the rotation It is mounted on the floor in the washing and dewatering tank 13 so that the water supply means 17 is stored in the outer tank 5 by a level sensor not shown, which is disposed above the main body 1. It is installed to detect the water level of the wash water to supply the wash water according to the laundry in the washing and dehydration tank 13, the lower side of the outer tank (5) to discharge the contaminated wash water generated during washing and rinsing Drainage means 19 are disposed.

On the other hand, as shown in detail in FIG. 2, the driving device 11 has a predetermined distance between the driving shaft 21 and the pulsator shaft 23 in the center direction of the washing and dehydrating tank 13 and the pulsator 15. It is installed so as to rotate in a straight line in a straight line, the pulley (9a) is fastened rotatably fixed to the drive shaft 21, the drive coupling (25) on the outer peripheral surface of the drive shaft (21) ) And the lower drum 27 are sequentially wound from the top, and the clutch spring 29 for selectively transmitting power is wound around the drive coupling 25 and the lower drum 27.

An upper side of the lower drum 27 is coupled with a reduction gear case 33 for receiving a plurality of reduction gears 31 therein, and an upper end of the reduction gear case 33 has a washing and dewatering tank ( 13, the dehydration shaft 35 fastened and fixed is inserted and installed so as to be rotatable, and the upper and lower cases are disposed on the outer sides of the dehydration shaft 35 and the lower drum 27 through bearings 37 and 39. 41 and 43 are fixedly installed, and a connector 45 geared and rotated to the pulsator shaft 23 is coupled to the upper side of the reduction gear 31.

The reduction gear case 33 and the clutch spring 29 have a brake band 48 and a clutch lever 49 for controlling the operation of the reduction gear case 33 and the clutch spring 29 according to the operation of the brake lever 47. ) Is elastically installed, and the one-way clutch 51 is mounted on the outside of the lower drum 27 to allow rotation in one direction only.

However, according to the driving device of the conventional washing machine configured as described above, since the reduction gear device is disposed inside the reduction gear case in the lower part of the washing tank, the pulsator shaft is lengthened, and the structure of the power transmission device is complicated, and the structure is complicated. As the assembly is degraded, there is a problem that the A / S occurs frequently in the end, and the motor is eccentric in the lower center of the outer tub, there is a problem that vibration or noise occurs during washing and dehydration.

Therefore, the present invention is devised to solve the above problems, and an object of the present invention is to provide a driving device of a washing machine that can reduce the height of the drive device while simplifying the structure by reducing components.

In order to achieve the above object, a driving device of a washing machine according to the present invention receives a driving force from a motor and selectively drives a pulsator and a washing and dehydrating tank, and is directly connected to an upper end of the driving shaft to transmit rotational force to the pulsator. The pulsator shaft to reduce the rotational force transmitted from the pulsator shaft, and at the same time, the reduction gear device disposed inside the pulsator to prevent malfunction caused by the foreign matter introduced, and washing water to be introduced when washing It is floated by the buoyancy of the wash water so that only the pulsator is rotated at the same time when dehydration is characterized by consisting of buoyancy means for rotating the washing and dehydration tank together with the pulsator.

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

3 is a longitudinal sectional view schematically showing the configuration of the washing machine according to the present invention, and FIG. 4 is a longitudinal sectional view schematically showing the configuration of the washing machine according to the present invention.

The same parts as those in FIGS. 1 and 2 are given the same reference numerals and redundant descriptions are omitted.

In the driving apparatus of the washing machine according to the present invention, as shown in FIGS. 3 and 4, the driving motor 7 is fixed to the outer tub 5 by a fastening means 190 made of a bolt and a nut, 5, a drain motor 121 is mounted on an outer bottom surface of the drain motor 121, and a transport member 123 is connected to a lower portion of the drain motor 121 so that the transport member 123 is operated according to the operation of the drain motor 121. ) Moves upward, and an elastic member 125 is installed between the outer bottom surface of the outer tub 5 and the center of the transfer member 123 to apply a force downward to the transfer member 123 moved upward. have.

In addition, the connector 200 is fixed to the washing-and-dehydration tank 13 and externally wound with a predetermined gap on the outside of the drive shaft 21, and the drive shaft 21 is moved in accordance with the up and down movement of the transfer member 123. Clutch means 120 is installed on one side of the transfer member 123 to transmit or block the driving force of the connector (200).

On the other hand, the lower side of the drive shaft 21 for receiving the driving force from the drive motor 7 to drive the pulsator 15 and the washing and dewatering tank 13 is directly connected to the rotation shaft of the drive motor 7, The gear part formed in the outer peripheral surface of the spline shaft 141a which is not shown in figure is gear-coupled with the connection member 141, and the upper side is directly connected to the pulsator shaft 102. As shown in FIG.

In addition, the pulsator 15 accommodates the reduction gear device 31 mounted to decelerate the rotational force transmitted from the pulsator shaft 23 therein so that foreign matters and the like do not flow therein.

The buoyancy means 170, the buoyancy shaft 171 is floated by the buoyancy of the wash water at the time of washing, the driving force transmitted from the drive motor 7 is transmitted from the drive shaft 21 to the reduction gear device 31, and It is transmitted from the reduction gear device 31 to the pulsator 15 so that the pulsator 15 rotates decelerately, and when dewatered, the driving force is lowered by the self-load of the buoyancy shaft 171 and transmitted from the driving motor 7. The drive shaft 21 and the pulsator shaft 23 are directly transmitted to the pulsator 15 so that the washing and dehydration tank 13 together with the pulsator 15 rotate simultaneously with the pulsator 15. Excreted at the top.

In addition, a packing member 101 is disposed above the drive shaft 21 to prevent the water stored in the outer tub 5 and the washing and dehydration tank 13 from flowing into the drive shaft 21. A bearing 104 is disposed on the outer circumferential surface of the pulsator shaft 23 directly connected to the drive shaft 21 to facilitate rotation.

The clutch means 120 is moved up and down by the transfer member 123 to annular connection member 141 for transmitting and blocking the driving force of the drive shaft 21 to the connector 200 and the connection member 141 The support member 143 is disposed between the annular support member 143 for supporting and the inner circumferential surface of the support member 143 and the outer circumferential surface of the connection member 141 to rotate the support member 143 according to the rotation of the connection member 141. A bearing 145 inserted so as not to be inserted into it, an annular guide member 147 mounted on the drive motor 7 to guide the vertical movement of the support member 143, and a gear not shown in the drive shaft 21. It is composed of an annular spline shaft 141a arranged to be rotated in accordance with the rotation of the drive shaft 21 is coupled to the part.

On the other hand, the lower portion of the pulsator shaft 23 is directly connected to the upper portion of the drive shaft 21, the reduction gear device 31 is provided on the outer peripheral surface, the buoyancy means in the center upper portion of the pulsator shaft 23 A first recess 102 having a polygonal shape is formed to fit the buoyancy shaft 171 of 170.

The pulsator 15 accommodates the reduction gear device 31 with the pulsator shaft 23 directly protruding toward the center of the washing-and-dehydrating tank 13 directly connected to the drive shaft 21. A second recess 103 having a polygonal shape is formed in the center thereof so that the buoyancy shaft 171 of the buoyancy means 170 is fitted.

The buoyancy means 170 disposed in the inner center of the pulsator 15 may include a buoyancy shaft 171 fitted simultaneously to the first groove 102 and the second groove 103 having a polygonal shape when dewatering, and washing. At the time, the buoyancy shaft 171 floats with the buoyancy of the wash water so that the buoyancy 171 is easily separated from the first groove, and the wash water flows to allow the floating portion 172 to float and the wound from the laundry. 172 is protected and consists of a buoyancy cylinder 173 in which a plurality of through holes 173a are formed.

In addition, the floating portion 172 of the buoyancy means 170 is preferably made of a material that can rise by the buoyancy of the washing water introduced through the through hole 173a during washing.

In addition, the buoyancy cylinder 180 is disposed to protrude from the pulsator 15 to the upper portion so that the floating portion 172 may be injured during washing, the upper portion of the cover member 173 is a plurality of holes perforated ) Is connected by hooks, etc.

Next, the operation and effect of the present invention thus constructed will be described.

During washing, water is stored in the washing and dehydration tank 13, and when the washing water flows into the buoyancy bucket 180 through the through hole 173a of the cover member 173 of the buoyancy bucket 180, the floating part. 172 is floated by the buoyancy of the wash water so that the buoyancy shaft 171 of the buoyancy means 170 is separated from the first groove 102, on the other hand, the transfer member 123 by the elastic force of the elastic member 125 As shown in FIG. 3, the connecting member 141, the bearing 145, and the supporting member 143 are moved downward by the self load and the conveying member 123 while being lowered.

When power is applied to the drive motor 7, the drive shaft 21 rotates and the spline shaft 143a coupled to the lower portion of the drive shaft 21 rotates in coordination.

At this time, the connection member 141 is smoothly rotated by the rotation of the spline shaft 141a by the bearing 145, but the support member 143 and the transfer member 123 does not rotate.

On the other hand, when the drive shaft 21 starts to rotate, the reduction gear device 31 geared with the pulsator shaft 23 directly connected to the upper portion of the drive shaft 21 is rotated, the reduction gear device 31 As the reduction gear 161 geared by the rotation of the rotation) rotates, the pulsator 15 connected to the reduction connector 161 is decelerated and rotates to generate washing water flow.

That is, the floating part 172 of the buoyancy means 170 is floated to the upper portion of the buoyancy cylinder by the buoyancy of the wash water so that the buoyancy shaft 171 of the buoyancy means 170 is separated from the first groove 102. Since the state, the power of the pulsator shaft 23 received power from the drive shaft 21 is transmitted to the pulsator 15 via the reduction gear device 31 and the reduction connector 161, so the pulsator 15 is decelerated. It will rotate.

At the time of dehydration, when the washing administration is finished, the drainage 19 is opened by a drain motor (not shown), and the washing water is drained. At this time, the floating part 172 of the buoyancy means 170 descends itself and is polygonal. As the buoyancy shaft 171 of the shape is fitted to the first groove 102 of the same polygonal shape, the buoyancy shaft 171 is a pulsator 15 to the rotational force of the pulsator shaft 23 directly connected to the drive shaft 21 ), And the connecting member 141, the bearing 145, and the support member 143 move upward while the transfer member 123 moves upward by the driving force of the drain motor 121. The connection member 141 is gear-coupled to the connector 200 which is connected to the washing and dehydration tank 13, and the state shown in FIG.

When power is applied to the drive motor 7, the spline shaft 141a coupled to the lower portion of the drive shaft 21 is rotated while the drive shaft 21 is rotated.

At this time, the connecting member 141 is smoothly rotated in conjunction with the spline shaft (141a) by the bearing 145 and at the same time gear coupling of the gear portion (not shown) of the connector 200 connected to the washing and dewatering tank 13 Therefore, the washing and dewatering tank 13 rotates at high speed in accordance with the rotation of the spline shaft 141a which is gear-coupled with the drive shaft 21.

In the above description, the washing and dewatering tank 13 is formed by the spline shaft 141a (not shown) of the drive shaft 21 and the connecting member 141 which is geared at the same time to the gear portion (not shown) of the connector 200. ) And the pulsator shaft 23 are rotated at the same rotational speed as the drive shaft 21 directly connected to the drive motor 7, while the polygonal buoyancy shaft 171 of the pulsator shaft 23 is rotated. If the first groove 102 and the second groove 103 of the pulsator 15 are fitted at the same time, the washing gear 31 to the reduction connector 161, the reduction connector 161 to the pulsator at the time of washing Since the driving force transmitted to the 15 is transmitted to the pulsator 15 directly from the pulsator shaft 23, the washing and dehydration tank 13 coupled to the driving shaft 21 via the connector 200 and The pulsator 15, which is directly connected to the pulsator shaft 23 via the buoyancy shaft 171, rotates at a high speed at the same rotation speed, so laundry is dehydrated by centrifugal force. Becomes

When the dehydration operation is completed, the drain port is blocked by the drain motor (not shown) and the driving motor 7 is stopped, thereby stopping the pulsator 15 and the washing and dewatering tank 13.

According to the driving device of the washing machine according to the present invention, during the washing stroke, the buoyancy shaft is injured by the washing water flowing into the buoyancy bucket through the through hole formed in the buoyancy bucket of the buoyancy means, so that the pulsator is rotated to transmit power. When dewatering, the washing water introduced into the buoyancy bucket is discharged out of the washing and dewatering tank through the through hole, so that the buoyancy shaft is lowered by the self-load of the buoyancy shaft, and the buoyancy shaft is coupled to the first recess to wash and dehydrate the tank. Since the power is transmitted to the pulsator to rotate in conjunction, the structure is simple, the structure is simple, the number of parts can be reduced to reduce the manufacturing cost, in particular, the reduction gear device inside the pulsator By accommodating, there is a very good effect that the washing machine can be compacted due to the reduction in the pulsator shaft height.

Claims (5)

In the driving device of the washing machine, the driving force received from the driving motor 7 is directly connected to the drive shaft 21 and the upper end of the drive shaft 21 for selectively driving the pulsator 15 and the washing and dewatering tank 13. The pulsator 15 reduces the pulsator shaft 23 that transmits the rotational force to the pulsator, and the rotational force transmitted from the pulsator shaft 23, and at the same time, so that no malfunction occurs due to foreign matter introduced thereto. When washing with deceleration gear device 31 disposed therein, washing water is introduced to float the buoyant force so that only the pulsator 15 is rotated, and when dewatered, it is lowered by its own weight and dehydrated. Driving device of the washing machine, characterized in that consisting of buoyancy means (170) for rotating the pulsator (15) together with the bath (13). According to claim 1, The buoyancy means 170 is disposed in the inner center of the pulsator 15 to accommodate the buoyancy shaft 171 and the buoyancy shaft 171 is lowered by its own load when dewatering, and at the same time Buoyancy tube 180 is formed with a plurality of through holes (173a) so that the wash water flows in and out, and when washing, the buoyancy shaft 171 is floated upward by the wash water so that the buoyancy shaft 171 is easily separated from the first groove (102) The driving device of the washing machine, characterized in that made of a floating portion (172). The driving device of a washing machine according to claim 2, wherein the buoyancy means (170) is disposed in the center of the pulsator (15). The driving device of a washing machine according to claim 1, wherein the drive shaft (21) is directly connected to the drive motor (7). According to claim 1, wherein the pulsator shaft 23 is characterized in that the first groove 102 of the polygonal shape is formed so that the buoyancy shaft 171 of the buoyancy means 170 is received at the center of the upper portion thereof. Drive of the washing machine.