KR0144424B1 - Structure of shaft for gear assembly of a washing machine - Google Patents

Abstract

According to the present invention, the washing shaft for rotating the pulsator is vertically divided so that the upper washing shaft is coupled with the dehydration shaft and the lifting screw, so that the length is variable, and the upper shaft and the lower shaft are spline-coupled so that the upper shaft is separated from the lower shaft. The present invention relates to a laundry shaft structure of a reduction gear assembly for a washing machine, which prevents and improves assembly workability of the laundry shaft.

In the present invention, the washing shaft which rotates the pulsator 14 is spliced to each other by being divided into upper and lower parts by the upper washing shaft 26 and the lower washing shaft 28, and the pulsator 14 is connected to the upper washing shaft 26. ), And the pulley 12 is arranged on the lower washing shaft 28, and the lifting screw 30 corresponding to the inner circumferential surface of the dehydration shaft 22, which is interviewed with the outer circumferential surface of the upper washing shaft 26, respectively. By forming the pulsator 14 is raised and lowered while being reversed during washing and rinsing stroke, can prevent the tangling of the laundry and improve the washing power, improve the assembly of the laundry shaft and the upper laundry shaft is separated from the lower laundry shaft There is an effect that can be prevented.

Description

Washing shaft structure of reduction gear assembly for washing machine

The present invention relates to a drive shaft structure of a reduction gear assembly for a washing machine, in particular, the upper and lower parts of the washing shaft for rotating the pulsator to the upper washing shaft is combined with the dehydration shaft and the lifting and lowering screw to the variable length, the upper shaft and The lower shaft relates to a drive shaft structure of a reduction gear assembly for a washing machine, which is splined to prevent the upper shaft from being separated from the lower shaft and to improve the assembly workability of the washing shaft.

Generally, washing machines are classified into vortex type, drum type, and stirring type according to the washing method. Among the washing machines, vortex type washing machines are most widely used. Such vortex type washing machines have a washing stroke, a rinsing stroke, and a dehydration in a washing tank. Administration is carried out collectively.

Such a washing machine is installed in the outer box of the outer cylinder, which is a rectangular cylinder, with a water tank of a cylindrical body accommodating laundry water, suspended by hook rods, and a plurality of water holes are formed inside the water tank, and the cylindrical body for laundry and laundry water is also accommodated. The washing tank is installed in a concentric circle, and a pulsator for generating water flow is installed in the lower part of the washing tank.

The pulsator and the washing tank have dual drive shafts and are coupled to the reduction gear assembly mounted on the bottom of the water tank so that only the pulsator performs the forward / reverse during the washing and rinsing stroke, and the pulsator during the dehydrating stroke. And the washing tank is integrally rotated in one direction, the reduction gear assembly is connected to the drive motor of the one side V-belt to interlock. And the upper part of the outer box is provided with a control panel, an electric chamber and a door is provided with a top plate, the upper end of the balance is installed, the upper end of the reservoir was installed a shower ring or water plate.

As shown in FIG. 1, the conventional reduction gear assembly has a lower end of the washing shaft 10 directly connected to a pulley 12 connected to a pulley of the driving motor and a V-belt, and a pulsator 14 is fixed to the upper end. The pulsator 14 was fixedly installed by the fixing screw 16.

In addition, a brake drum 20 is installed inside the lower case 18, and a dehydration shaft 22 is disposed at an adjacent side of the brake drum 20, and a washing is performed inside the dehydration shaft 22. The shaft 10 was installed adjacently.

Thus, when the brake band 24 is operated, the brake band 24 presses the brake drum 20, and thus the brake drum 20 contacts the washing shaft 10 with the dehydration shaft 22 by the brake action. Was done.

However, in the case described above, as the pulsator 14 is reversed, water flow is constantly formed, causing problems such as tangling of the laundry. At the same time, the laundry is damaged or the washing power is lowered due to entanglement. There was this.

The present invention has been made in consideration of the above circumstances, the object of which is to vertically divide the washing shaft to rotate the pulsator to the upper washing shaft is combined with the dehydration shaft and the lifting screw to make the length variable, the upper shaft and the lower The shaft is spline-coupled to prevent the upper shaft from being separated from the lower shaft, and to provide a drive shaft of the reduction gear assembly for a washing machine to improve the assembly workability of the washing shaft.

The present invention provides a washing machine having a reduction gear assembly for rotating only the pulsator during the washing and rinsing stroke to achieve the above object, and rotating the pulsator and the washing tank integrally during the dewatering stroke, wherein the pulsator Biaxially spline the laundry shaft to rotate the upper and lower parts by splicing, and the pulsator is installed on the upper laundry shaft, and the pulley is installed on the lower laundry shaft, and the inner circumferential surface of the dehydration shaft is interviewed with the outer circumferential surface of the upper laundry shaft. The present invention provides a laundry shaft structure of a reduction gear assembly for a washing machine, which forms a corresponding lifting screw and allows the pulsator to move up and down while washing and rinsing.

1 is a cross-sectional view showing the internal structure of a conventional reduction gear assembly.

Figure 2 is a cross-sectional view showing the internal structure of the reduction gear assembly according to the present invention.

* Explanation of symbols for main parts of the drawings

10: washing shaft 12: pulley

14 pulsator 16 fixing screw

18: lower case 20: brake drum

22: dewatering 24: brake band

26: upper washing shaft 28: lower washing shaft

30: raising and lowering screw part 32: spline shaft

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

2 shows a washing shaft structure of the reduction gear assembly for a washing machine according to the present invention. The washing shaft structure of the reduction gear assembly for the washing machine includes an upper washing shaft 26, a lower washing shaft 28, and a lowering and lowering. It consists of a screw part 30 and the spline shaft 32.

The upper washing shaft 26 has a pulsator 14 is fixed to the fixing screw 16 at the upper end, and the pulsator 14 is rotated forward and reverse.

The lower laundry shaft 28 is arranged to penetrate through the center of the pulley 12, the lower end of which is connected to the drive motor, the pulley and the V-belt.

The lifting and lowering screw 30 allows the pulsator 14 of the upper washing shaft 26 to be inverted and lowered vertically in the vertical direction.

The spline shaft 32 connects the upper washing shaft 26 to the lower washing shaft 28, has the same driving force as the lower washing shaft 28, and is detached when the upper washing shaft 26 rises. It is formed to have a sufficient length to prevent the.

In other words, the present invention divides the washing shaft, which causes the pulsator 14 to be inverted and is lowered in the vertical and vertical directions, into the upper washing shaft 26 and the lower washing shaft 28.

In order to move the pulsator 14 up and down, the length of the elevating screw part 30 is sufficiently formed to be approximately 45 m / m, so that the rotation speed of the pulsator 14 is raised to the highest height in the left rotation, and in the right rotation. A screw was formed on the outer circumferential surface of the lower end of the upper laundry shaft 26 to descend to the original position. Correspondingly, a screw portion was formed on the inner surface of the dewatering shaft 22.

In addition, the lower washing shaft 28 is separated from the upper washing shaft 26 to give the same driving force to the upper washing shaft 26 after separation, and to the outer peripheral surface of the upper end of the lower washing shaft 28 to the left and right reverse movement The inner peripheral surface of the corresponding dehydration shaft 22 was formed with the spline shaft 32.

The spline shaft 32 forms six to twenty spline key grooves in parallel with the shaft, and a corresponding key groove is formed in the upper washing shaft 26 to bind to each other.

The spline shaft 32 not only drives the upper laundry shaft 26 and the lower laundry shaft 28, but also prevents the spline shaft 32 from being separated from the lower laundry shaft 28 when the upper laundry shaft 26 is raised.

Thus, the upper washing shaft 26 has a sufficient length not to be separated to the lower washing shaft 28 even if it rises to the highest height and descends, and is formed longer than the upper washing shaft 26 at about 45-50 m / m.

In the present invention configured as described above, the pulsator 14 is rotated forward and backward and at the same time, the upper washing shaft 26 is moved upward and downward by the elevating screw portions of the upper washing shaft 26 and the dehydration shaft 22. The pulsator 14 thus moves up and down, and the lower washing shaft 28 is coupled to the spline shaft 32 to prevent the upper washing shaft 26 from being separated.

Therefore, more powerful water flow is generated inside the washing tank by the forward and reverse movement of the pulsator 14 and the up and down movement to prevent tangling between the laundry.

In the accompanying drawings, reference numeral 18 denotes a lower case of the reduction gear assembly, 20 denotes a brake drum, and 24 denotes a brake band.

As described above, according to the present invention, the pulsator is reversed and lifted up and down in the vertical direction to generate more powerful water flow in the washing tank, thereby preventing the tangling of the laundry and improving the washing force, and improving the assembly of the laundry shaft. And it is effective to prevent the upper laundry shaft is separated from the lower laundry shaft.

Claims (1)

In the washing machine having a reduction gear assembly which rotates only the pulsator 14 during the washing and rinsing stroke, and rotates the pulsator 14 and the washing tank integrally during the dewatering stroke, the pulsator 14 is rotated. The upper and lower washing shaft 26 and the lower washing shaft 28 to be operated are splined to each other by spline coupling, and the upper washing shaft 26 has a pulsator 14 and a lower washing shaft ( 28, the pulley 12 is laid out, and the pulsator 14 washes by forming a lifting screw portion 30 corresponding to each other on the inner circumferential surface of the dewatering shaft 22, which is interviewed with the outer circumferential surface of the upper washing shaft 26, respectively. And Washing shaft structure of the reduction gear assembly for a washing machine to be raised and lowered while inverted during the rinsing stroke.