KR0182544B1 - A driving apparatus of a washing machine - Google Patents

Abstract

The present invention relates to a driving device for a washing machine, comprising: a spline shaft geared to an outer circumferential surface of a drive shaft and a gear portion formed on an outer circumferential surface thereof, and installed on an upper end of the spline shaft, and at the same time a bearing is inserted between the drive shaft and the outer circumferential surface thereof. A lower drum having a toothed gear portion, such as a gear portion of the spline shaft, an upper drum connected to an upper side of the lower drum, a reduction gear provided inside the upper drum, and a reduction gear for reducing the rotational speed of the drive shaft. The bearing is inserted between the pulsator shaft connected to the lower part and the pulsator shaft to rotate the pulsator by receiving the slowed rotation by the connector, and the lower drum is interlocked with the upper drum to wash it. In a washing machine having a dehydration shaft connected to rotate a dewatering tank, the lower portion of the drive shaft 21 directly A drive motor 150 connected to generate rotational force, and gear parts 149 and 107 formed on the spline shaft 148 and the lower drum 34, respectively, to move and move the spline shaft 148 selectively. The clutch means 140 for switching power to interlock and the transfer member 123 connected to the lower end of the clutch means 140 moves upward when dewatering to interlock the spline shaft 148 and the lower drum 34. It is installed between the drain motor 121 and the upper side of the transfer member 123 and the lower case 42 to lower the clutch means 140 during washing so that the spline shaft 148 and the lower drum It characterized in that it comprises an elastic member 125 for disconnecting the power of (34).

The present invention configured as described above can reduce the number of parts to increase the assemblability, improve the workability and stabilize the quality.

Description

Drive of washing machine

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

2 is a cross-sectional view showing a driving device of a conventional fully automatic washing machine.

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

Figure 4 is a longitudinal sectional view schematically showing the configuration of the dehydration of the automatic washing machine according to an embodiment of 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 33: upper drum

34: lower drum 35: deshrink

120: transfer means 123: transfer member

140: clutch means 141: connecting member

143: support member 147: guide member

149: spline shaft 150: drive motor

The present invention relates to a driving device of a washing machine, and in particular, when the driving shaft and the driving motor are directly connected to each other during washing, the driving force of the driving motor is separated and transmitted to the pulsator and the washing and dehydrating tank so that the pulsator and the washing and dehydrating tank rotate in opposite directions. Washing is possible while washing, and the dehydration is connected to the pulsator and theta and dehydration tank integrally transmitted to the pulsator and theta and the dehydration tank by the connecting member to enable the dehydration while rotating in the same direction, the structure is simple and improves the performance of the washing machine It relates to a driving device of.

Conventional fully automatic washing machine is, as shown in Figure 1 and 2, the upper part of the washing machine body (1) is suspended to a certain height via a plurality of suspension bars (3) is mounted so as to prevent vibration during washing and dehydration. A washing tank 5 for storing wash water, a motor 7 disposed on an outer bottom surface of the washing tank 5 and driven by power, and mounted on an outer bottom of the washing tank 5 to the motor 7 In the washing tank 5 to receive the driving force from the belt (9) through the centrifugal force in accordance with the rotation of the power transmission device for driving the pulsator 15 or the washing and dehydration tank 13 to be described later in the washing tank (5) Rotatingly mounted washing-and-dehydrating tank 13 and rotatably mounted on the bottom surface of washing-and-dehydrating tank 13 therebetween are subjected to power of the motor 7 via the power transmission device 11 to perform forward and reverse rotation. In the wash and dehydration tank (13) The pulsator 15 which forms a flow and washes, and the vertical sensing device which is arrange | positioned in the said washing tank 5 by the water level sensor which is arrange | positioned above the main body 1 and is not shown, The water supply means 17 which detects the water level of the wash water stored in the washing tank 5 and supplies the washing water according to the laundry into the washing tank 5, and is disposed on one side of the lower portion of the washing tank 5 to wash and rinse. Drainage means 19 for discharging the generated contaminated wash water are disposed.

As shown in FIG. 2, the power transmission device 11 has the drive shaft 21 and the pulsator shaft 23 in a line at predetermined centers of the washing and dehydrating tank 13 and the pulsator 15. The rotating shaft is installed freely, and a pulley 9a wound around the belt 9 is fixedly coupled to the lower end of the drive shaft 21, and a drive coupling 25 and a lower drum 27 are provided on the upper side thereof. Inserted and the clutch spring 29 is wound around the drive coupling 25 and the lower drum 27 to selectively transmit power.

An upper drum 33 having a plurality of reduction gears 31 coupled therein is coupled to an upper side of the lower drum 27, and a washing and dewatering tank 13 at an upper end of the upper drum 33. The dehydration shaft (35) fastened to and inserted into the rotatable body is integrally installed, and the upper and lower cases (37) and (39) are interposed between the dehydration shaft (35) and the lower drum (27). 41 and 43 are fixedly installed, and the upper portion of the reduction gear 31 is coupled to the connector 45 which is integrally rotated by gear coupling with the pulsator shaft 23.

The upper drum 33 and the clutch spring 29 are provided with a brake band 48 and a clutch lever 49 for controlling the operation of the upper drum 33 and the clutch spring 29 according to the operation of the brake lever 47. It 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.

By the way, according to the driving apparatus of the conventional washing machine configured as described above, there was a problem that the assembly is deteriorated due to the structural complexity, and the motor is eccentric in the lower center of the washing tank, and vibration and noise are generated during washing and dehydration. There was a problem.

Therefore, the present invention has been made to solve the above problems, an object of the present invention is to directly drive the drive shaft to the drive motor to reduce the number of parts to increase the assembly, washing to improve the workability and quality To provide a driving device of.

The driving device of the washing machine according to the present invention made to achieve the above object is a spline shaft gear is coupled to the outer peripheral surface of the drive shaft and the gear portion is formed on the outer peripheral surface, is installed on the top of the spline shaft, the bearing is inserted between the drive shaft At the same time, a lower drum having a toothed gear portion, such as a gear portion of the spline shaft, on an outer circumferential surface thereof, an upper drum connected to an upper side of the lower drum, a reduction gear provided inside the upper drum, and a rotation speed of the driving shaft The bearing is inserted between the pulsator shaft connected to the lower part and the pulsator shaft so that the pulsator is rotated by receiving the rotation decelerated by the reduction gear to make the pulsator rotate, and the upper drum In the washing machine having a dehydration shaft connected to rotate the washing and dehydration tank by interlocking rotation, A drive motor that is directly connected to the lower portion of the drive shaft and generates a rotational force, and gears respectively geared to the spline shaft and the lower drum to move the power to selectively interlock the spline shaft and the lower drum. A clutch means for switching, a drain motor which operates to move the spline shaft and the lower drum by moving upward when the conveying member connected to the lower end of the clutch means is dehydrated, and is installed between the upper side and the lower case of the conveying member. It is characterized in that it comprises an elastic member for lowering the power of the spline shaft and the lower drum by lowering the clutch means during washing.

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

In addition, the same code | symbol is attached | subjected to the same part as FIG. 1, and FIG. 2, and the overlapping description is abbreviate | omitted.

As shown in FIG. 3 and FIG. 4, the driving apparatus of the washing machine according to the present invention has a spline shaft 148 gear-coupled to an outer circumferential surface of the drive shaft 21 and a gear portion 149 formed on the outer circumferential surface thereof. It is installed at the upper end of the spline shaft 148, the bearing 105 is inserted between the drive shaft 21 and at the same time a toothed gear portion such as the gear portion 149 of the spline shaft 148 on the outer peripheral surface ( A lower drum 34 having a 107 formed thereon, an upper drum 33 connected to an upper side of the lower drum 34, a reduction gear 31 installed inside the upper drum 33, and the drive shaft 21. The pulsator shaft 23 connected to the lower part to rotate the pulsator 15 receives the rotation decelerated by the reduction gear 31 for decelerating the rotational speed of the connector 45, and the pulsator Bearings 101 and 103 are inserted between the shafts 23 and rotated in coordination with the upper drum 33 on the outer peripheral surface of the lower end thereof. A dehydration shaft 35 connected to rotate the dewatering tank 13, a driving motor 150 directly connected to the lower portion of the driving shaft 21 to generate a rotational force, the spline shaft 148 and the lower drum. Clutch means 140 for shifting power so as to be selectively engaged with the spline shaft 148 and the lower drum 34 while being geared to the gear portions 149 and 107 formed in the 34, respectively; A drain motor 121 that operates to move the transfer member 123 connected to the lower end of the means 140 to the upper side during dehydration so that the spline shaft 148 and the lower drum 34 interlock with each other, and the transfer member 123. It is installed between the upper side and the lower case 42 of the) is made of an elastic member 125 for lowering the power of the spline shaft 148 and the lower drum 34 by lowering the clutch means 140 during washing. .

The drive motor 150 is fixedly coupled to the upper case 41 by the fastening means 160, the upper case 41 is fastened to the washing tank 5 by the fastening means 163, the pearl The radar 15 is penetrated with the pulsator shaft 23 by the fastening member 16.

The bearing 105 is inserted between the drive shaft 21 and the lower drum 34 to facilitate the rotation of the drive shaft 21 and the lower drum 34 in the substantially central portion of the drive shaft 21, and the spline shaft (below). The gear part 109 is formed to be firmly geared with the gear part 109 formed in the inner diameter part of 148.

The pulsator shaft (23) has a packing member (110) disposed on the upper part of the pulsator shaft (23) to prevent the water stored in the washing tank (5) from being introduced, and the pulsator in the middle part and the lower part. Bearings 101 and 103 are arranged to facilitate rotation of the shaft 23.

The clutch means 140 is inserted into an annular connecting member 141 inserted to move up and down on the gear portions 107 and 149 of the lower drum 34 and the spline shaft 148 and an outer peripheral surface of the connecting member 141. It is installed with the bearing 145 interposed therebetween and consists of an annular support member 143 pressed into the outer circumferential surface of the bearing 145.

The upper end of the drive motor 150 is provided with an annular guide member 147 to guide the shanghai movement of the support member 143.

Next, the operation and effect of the present invention configured as described above will be described.

At the time of washing, water is stored in the washing tank 5 and the washing and dehydrating tank 13, and the connecting member 141, the bearing 145, and the supporting member are lowered while the transfer member 123 is lowered by the elastic force of the elastic member 125. 143 is moved downward by the lower body load and the conveying member 123 to the state shown in FIG.

Then, when power is applied to the drive motor 150, the drive shaft 21 rotates, and the spline shaft 148 coupled to the lower portion of the drive shaft 21 is interlocked.

At this time, the connecting member 141 is smoothly rotated by the bearing 145 and the spline shaft 148, 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 31 geared to the drive shaft 21 is rotated, and the pulse coupled to the connector 45 by the rotation of the reduction gear 31. By the interlocking rotation of the eater shaft 23, the pulsator 15 connected to the pulsator shaft 23 rotates to form washing water flow.

In the above description, during the initial rotation of the drive motor 150, the rotation speed of the pulsator 15 is reduced by the water and the laundry stored in the washing and dewatering tank 13 in the initial washing cycle of the pulsator shaft 23. The upper drum 33 geared to the reduction gear 31 by the reduced rotational speed is the pulsator shaft 23, the connector 45 and the upper drum 33 geared to the reduction gear 31 are pulsator. By rotating in the direction opposite to the rotation direction of the reduction gear 31 with a reaction force against the reduced number of revolutions of the shaft 23, the connector 45 and the reduction gear 31, the dehydration shaft through the upper drum (33) ( 35) and the washing and dewatering tank 13 is interlocked, and after a predetermined time, when the driving motor 150 reversely rotates, the washing and dewatering tank 13 maintains the forward rotation by the rotational inertia. , The pulsator 15 is reversed.

That is, in addition to the initial washing, the pulsator 15 and the washing and dewatering tank 13 rotate in opposite directions, and the washing and dewatering tank 13 and pulsing are repeatedly rotated by a predetermined angle by the driving motor 150 which is rotated forward and backward. The rotating water flow formed while the data 15 rotates in the opposite direction to each other impacts the laundry and washes the laundry.

At the time of dehydration, when the washing process is finished, the drain 19 is opened by a drain motor (not shown), and washing water is drained. At this time, the transfer member 123 moves upward by the driving force of the drain motor 121. While moving the connecting member 141, the bearing and the support member 143 is in the state shown in FIG.

When power is applied to the driving motor 150, the spline shaft 148 coupled to the lower portion of the driving shaft 21 is interlocked while the driving shaft 21 is rotated.

At this time, the connecting member 141 is smoothly rotated and interlocked with the spline shaft 148 by the bearing 145 and at the same time is geared to the gear portion 107 of the lower drum 34, the gear and the drive shaft 21 The lower drum 34 is rotated according to the rotation of the coupled spline shaft 148.

That is, when the drive shaft 21 starts to rotate, the upper drum 33, the dehydration shaft 35, and the washing and dewatering tank 13 connected to the lower drum 34 rotate in the same direction.

In the above description, the lower drum 34 and the upper portion are connected to the gear 149 of the spline shaft 148 of the drive shaft by the connecting member 141 which is geared to the gear 107 of the lower drum 34. The drum 33 and the dehydration shaft 35 are rotated at the same rotational speed as the drive shaft 21 of the drive motor 150, and the reduction gear 31 and the connector 45 are rotated in synchronization with the rotation of the drive shaft 21. ) And the rotational speed of the pulsator shaft 23 is also rotated at the same rotational speed as the drive shaft 21, so that the dehydration shaft 35 is coupled to the washing and dehydration tank 13 and the pulsator shaft 23. The pulsator 15 is rotated at the same rotational speed.

At this time, the pulsator 15 and the washing and dehydration tank 13 are rotated in the same direction, and the centrifugal force generated while the washing and dehydration tank 13 and the pulsator 15 are rotated at high speed by the driving motor 150. The laundry is dewatered by.

When the dehydration stroke is completed, the drain port 19 is blocked by a drain motor not shown, and the driving motor 150 is stopped, thereby stopping the pulsator 15 and theta / dehydration tank 13.

Therefore, the workability and quality can be stabilized by simplifying the structure and reducing the number of parts to increase the assemblability.

In addition, by installing the drive motor 150 in the lower center of the washing tank 5 to suppress the variation of the reference position (center of the washing tank 5) by the external force, it is possible to reduce the vibration and noise during washing and dehydration.

As described above, according to the driving apparatus of the washing machine according to the present invention, a driving motor mounted on the bottom surface of a washing tank, a power transmission for driving a pulsator and a washing and dewatering tank by receiving a driving force from the driving motor, and the power Clutch means for selectively switching the washing and dehydration tank and the pulsator to rotate the power according to the operation of the drain motor through the transfer means, and a conveying means for moving the clutch means by moving the driving means of the drain motor Since the number of parts is reduced, assembling properties are increased, workability is improved, and quality can be stabilized.

Claims (2)

A spline shaft geared to an outer circumferential surface of the drive shaft and provided with a gear portion on the outer circumferential surface thereof, and installed on an upper end of the spline shaft, and a bearing is inserted between the drive shaft and a tooth-shaped gear portion such as a gear portion of the spline shaft on the outer circumferential surface thereof; The lowered drum, an upper drum connected to the upper side of the lower drum, a reduction gear installed in the upper drum, and a reduction gear that slows down the rotational speed of the drive shaft are transmitted via a connector to pulse. A pulsator shaft connected to the lower part to rotate the rotor, and a bearing inserted between the pulsator shaft and a dehydration shaft connected to the lower outer peripheral surface to rotate in conjunction with the upper drum to rotate the washing and dewatering tank. In the washing machine, the drive motor 150 is directly connected to the lower portion of the drive shaft 21 to generate a rotational force, The power is switched to selectively interlock with the spline shaft 148 and the lower drum 34 while being moved up and down by being geared to the gear units 149 and 107 formed on the spline shaft 148 and the lower drum 34, respectively. The drain means for operating the clutch means 140 and the transfer member 123 connected to the lower end of the clutch means 140 to move upward when dewatering to interlock the spline shaft 148 and the lower drum 34. It is installed between the 121 and the upper case and the lower case 42 of the transfer member 123 to lower the clutch means 140 during washing to power the spline shaft 148 and the lower drum 34. Driving device for a washing machine comprising an elastic member (125) for disconnecting. The method of claim 1, wherein the clutch means 140 is an annular connecting member 141 inserted to move up and down on the gear portion 107, 149 of the lower drum 34 and the spline shaft 148, and the connecting member ( The driving device of the washing machine, characterized in that it comprises an annular support member 143 which is installed with the bearing 145 inserted between the outer circumferential surface of the 141 interposed therebetween and pressed into the outer circumferential surface of the bearing 145.