KR0127339Y1 - Driving apparatus for the fully-automated washing machine - Google Patents

Abstract

The present invention simplifies the structure of the drive unit by installing a drive shaft directly connected to the rotor through the outer tank and the inner tank to the power transmission motor mounted on the lower center of the outer tank of the automatic washing machine to transfer the power so that the speed of washing and dehydration is variable. With the buoyancy action, the clutch can be efficiently carried out during washing and dehydration by the up and down movement of the inner tank, thereby improving the efficiency and reliability of the automatic washing machine.

To this end, the present invention is the outer tub is elastically supported in the washing machine body, a motor for generating a driving force is installed on the outer bottom surface of the outer tub, the inner tub is installed in the outer tub so as to be rotated under the driving force of the motor, within the inner tub The washing machine is provided with a rotor to rotate under the driving force of the motor, the inner tank is installed to be moved up and down by the buoyancy of the water supplied wash, the motor is installed in the center of the bottom surface of the outer tub, Shaft coupling the drive shaft connected to the rotor installed through the center of the outer tank and the inner tank, and the upper fixed ratchet is integrated on the outer peripheral surface of the upper side of the drive shaft, while the driving shaft is wrapped around the lower central portion of the inner tank at the same time The hollow shaft is fixed integrally to move together along the drive shaft, and the center of the inner bottom surface of the outer tub Fixing the lower fixed ratchet integrated by the first boss in the state wrapped around the hollow shaft, the lower movable ratchet integrally fixed to the lower end of the outer peripheral surface of the hollow shaft to selectively engage the shanghai simultaneous lower fixed ratchet of the hollow shaft, The inner side of the inner bottom surface of the inner tank is a drive device for a full-automatic washing machine characterized in that the upper movable ratchet is integrated by a second boss so as to selectively engage the upper fixed ratchet at the same time as the shanghai at the same time while the drive shaft is wrapped.

Description

Drive of fully automatic washing machine

1 is a longitudinal sectional view showing a driving unit of a conventional fully automatic washing machine.

2 is an enlarged longitudinal sectional view of the clutch of FIG.

3 is a cross-sectional view showing a washing state of the washing machine according to the present invention.

Figure 4 is a longitudinal sectional view showing a state of dehydration of the washing machine according to the present invention.

5 is a cross-sectional view taken along the line A-A of FIG.

6 is a sectional view taken along the line B-B in FIG.

* Explanation of symbols for main parts of the drawings

1: outer tank 2: motor

3: inner thread 4: rotor

5: drive shaft 5a: upper fixed ratchet

6: bearing 7: hollow shaft

7a: lower movable ratchet 8: the first boss

8a: lower fixed ratchet 9: second boss

9a: upper movable ratchet 10: rib

11: Liquid Balance Ring

The present invention relates to a driving device of a full automatic washing machine, and more particularly, to simplify the structure of the driving unit installed in the full automatic washing machine, so as to smoothly transfer power to the rotor and the inner tank during washing and dehydration. It is.

In the conventional fully automatic washing machine, as shown in FIG. 1, a washing-use dehydration tank (hereinafter referred to as an inner tank) 3a is rotatably installed inside the outer tank 1a that is elastically supported (not shown) in the main body. The rotor 4a is installed in the lower part of the inner tank 3a, and the dehydration shaft 12 and the washing shaft of the clutch 11 installed on the bottom surface of the outer tank 1a are installed in the inner tank 3a and the rotor 4a. (13) penetrates and is fastened to each other, and the motor pulley 14 and the V-belt pulley 15 are respectively installed on the motor 2a and the clutch 11 provided on one side of the bottom surface of the outer tub 1a, and the V-belt. 16 is wound so that it may be rolled.

In addition, as shown in FIG. 2, the aforementioned clutch 11 is provided with a spring block 18 at a lower portion of the gear shaft 17 that receives power directly from the V-belt pulley 15 of the clutch 11. The outer peripheral surface of the lower dehydration shaft 12a on the upper side of the spring block 18 is integrally formed with the upper dehydration shaft 12 and the gear housing 19 for the brake drum and the dehydration shaft when washing the rotational driving force of the motor 2a. When dewatering without transmitting to the first clutch spring 20 to be delivered to the dehydration shaft is installed.

In addition, a clutch boss 22 having teeth 21 formed on a surface thereof is provided on an outer circumferential surface of the first clutch spring 20, and the outer shell 1a is engaged with the teeth 21 of the clutch boss 22. The cam 24 is rotatably installed at the lower end of the lever 23 interlocked with the drain valve actuating solenoid (not shown) provided at the side portion, and the washing / dehydration tank 3a is installed at the upper portion of the gear housing 19. One-way clutch 25 is installed to prevent the reverse rotation of the.

In addition, the gear housing 19 is provided with a planetary gear 26 for decelerating and transferring the power of the gear shaft 17 to the washing shaft 13 during washing, and the brake on the outer circumferential surface of the gear housing 19 for the brake drum. The band 27 is attached and comprised.

In general, the driving device of the fully automatic washing machine is a washing mode in which the inner tank 3a is stopped and washing the laundry by left and right stirring of the rotor 4a and the inner tank 3a and the rotor 4a as shown in FIG. It is divided into dehydration mode that rotates at high speed at the same speed

Therefore, when washing laundry with a conventional fully automatic washing machine, as shown in FIGS. 1 to 2, the forward rotational power of the motor 2a transmitted to the clutch 11 as the V-belt 16 is the first clutch spring. Since the direction of winding 20 is to be transmitted to the lower dehydration shaft 12 by the spring block 18, the cam on the teeth 21 of the clutch boss 22 installed on the outer circumferential surface of the first clutch spring 20. (24) is engaged and pushed to prevent the first clutch spring 20 to be wound to prevent power transmission to the dehydration shaft (12).

Therefore, the rotational power transmitted to the gear shaft 17 is decelerated through the planetary gear 26 in the brake drum combined gear housing 19 to be transmitted to the washing shaft 13, and is fixed on the washing shaft 13 Washing is performed by rotating the former 4a. In addition, since the reverse rotational power of the motor 2a is the direction in which the first clutch spring 20 is released, the rotational power of the gear shaft 17 cannot be transmitted to the dehydration shaft 12 at this time. Then, the washing shaft 13 is transferred to the washing shaft 13, and the washing is performed by rotating the rotor 4a fixed on the washing shaft 13. In addition, when the reduction through the planetary gear 26, the reaction torque is generated in the gear housing 19, the one-way clutch 25 to prevent the reverse rotation of the dewatering shaft 12 by the reaction rotation torque and The rotation of the dehydration shaft 12 is prevented by the brake band 27 mounted on the outer circumferential surface of the gear housing 19 for the brake drum. In addition, when the laundry is dewatered by the fully automatic washing machine, since the rotational power of the motor 2a transmitted to the clutch 11 as the V-belt 16 always rotates in the forward direction, the first clutch spring 20 is wound in the winding direction. It is operated so that the first clutch spring 20 and the spring block 18 is in close contact, the valve operation solenoid is turned on to pull the brake lever 28, the cam of the lever 23 is interlocked with the brake lever 28 24 is disengaged from the toothed portion 21 of the clutch boss 22.

At the same time, the brake band 27 is disengaged from the outer circumferential surface of the gear housing 19, so that the rotational power of the spring block 18 is integral with the gear housing 19 and the gear housing 19. ) To dehydrate the laundry by rotating at high speed in one direction.

Then, when dehydration is completed or the dehydration process is forcibly stopped during dewatering, when the drain valve actuating solenoid is turned off to release the lever 23, the cam 24 has the teeth 21 of the clutch boss 22. Caught in between. At the same time, as the brake band 27 presses the outer circumferential surface of the gear housing 19 to switch to the washing mode, the rotation of the gear housing 19 serving as the brake drum is stopped. The inner tub 3a fastened through the contraction 12 is also stopped.

However, the driving apparatus of the conventional fully automatic washing machine has a structure in which the motor 2a and the clutch 11 are separately installed so that the power of the motor 2a is transmitted to the clutch 11 through the V-belt 16. The complicated structure of the clutch 11, which has a function of selectively controlling the rotational power at the time of washing and dehydration and a function of reducing the speed, is also very complicated, and the power at the time of transmitting the rotational power by the V-belt 16 is also very complicated. There was a problem such that a lot of loss occurs.

The present invention is to solve the above-mentioned problems, the present invention can perform the clutching and de-clutching by the action of buoyancy as one of the drive shaft of the motor of the fully automatic washing machine can not only simplify the structure of the drive unit It is an object of the present invention to provide a driving device of a fully automatic washing machine that can transfer power directly from a motor to the rotor and the inner tank during washing and dehydration.

In order to achieve the above object, the present invention has an outer tub elastically supported in a washing machine main body, and a motor for generating a driving force is installed on the outer bottom surface of the outer tub, and an inner tub is installed in the outer tub so as to be rotated under the driving force of the motor. In the inner tank, the washing machine is provided with a rotor to rotate under the driving force of the motor, the inner tank is installed to move up and down by buoyancy of the water supplied wash, the motor is installed in the center of the bottom surface of the outer tank And a shaft coupled to a drive shaft connected to a rotor installed through the center of the outer tub and the inner tub to the motor, an upper fixing ratchet is integrated on the outer peripheral surface of the upper side of the driving shaft, and the driving shaft is wrapped around the lower central portion of the inner tub. The hollow shaft is fixed integrally to move together along the Shanghai simultaneous driving shaft of the inner tank, and the outer tank The lower fixed ratchet integrated by the first boss is fixed to the inner bottom surface center while the hollow shaft is wrapped, and the lower movable ratchet is integrally connected to the lower peripheral ratchet of the hollow shaft to selectively engage the lower fixed ratchet at the same time as the hollow shaft. And the upper driving ratchet is integrally formed by a second boss so as to be selectively engaged with the upper fixed ratchet at the same time of the inner tank while the driving shaft is wrapped around the inner bottom surface of the inner tank. Is provided.

Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. 3 to 6 as follows.

Figure 3 is a longitudinal sectional view showing a washing state of the washing machine according to the present invention, Figure 4 is a longitudinal sectional view showing a state of dehydration of the washing machine according to the present invention, Figure 5 is a cross-sectional view taken along line AA of Figure 3, 4 is a cross-sectional view taken along the line BB of FIG. 4, in the outer tank 1 of the fully automatic washing machine, an inner tank 3 is provided to be movable up and down by buoyancy of the supplied washing water, and a motor 2 (BLDC) is provided at the center of the bottom surface of the outer tank. Motor or SRM Motor) is installed, the motor 2 is coupled to the drive shaft 5 connected to the rotor 4 through the outer tub 1 and the center of the inner tub 3, the outer tub (1) A plurality of bearings 6 for smoothly maintaining the rotation of the drive shaft 5 are supported at the lower end of the drive shaft 5.

On the other hand, the upper fixing ratchet (5a) is formed on the outer peripheral surface of the upper side of the drive shaft (5), and the simultaneous drive shaft (5) of the shanghai of the inner tank (3) with the driving shaft (5) wrapped around the lower end of the inner tank (3) The hollow shaft (7) is integrally fixed so as to move together along), and the lower fixing united by the first boss (8) while the hollow shaft (7) is wrapped around the inner bottom surface center of the outer tub (1) The ratchet 8a is fixed. At this time, the lower movable ratchet 7a is integrally fixed to the lower end of the outer circumferential surface of the hollow shaft 7 so as to be selectively engaged with the Shanghai simultaneous lower fixed ratchet 8a of the hollow shaft 7. In addition, the inner bottom surface center of the inner tank 3 is integrated by the second boss 9 in a state in which the drive shaft 5 is wrapped to be selectively engaged with the upper fixed ratchet 5a at the same time as the shank of the inner tank 3. The upper movable ratchet 9a is fixed integrally therewith.

On the other hand, the outer bottom surface of the inner tank 3 is formed with a plurality of ribs 10 having a space portion to receive the force to raise the inner tank 3 by the buoyancy of the wash water. In addition, the inner tank 3 receives the buoyancy due to the washing water to the rib 10 positioned at the outermost side of each of the ribs 10 and suppresses vibration of the inner tank 3 when dewatering. A liquid balance ring 11 is mounted.

Referring to the operation of the present invention configured in this way in more detail as follows.

First, when the laundry mode is selected after the laundry is put into the inner tank 3 in a state in which washing or dehydration is not performed, as shown in FIG. 4, the outer tank 1 and the inner tank ( 3) Washing water flows into. Accordingly, as shown in FIG. 3, the lower portion of the inner tub 3 is immersed in the washing water and at the same time, the lower portion of the inner tub 3 is raised to the upper side of the outer tub 1 by receiving a buoyancy force of a constant force.

At this time, each of the ribs 10 formed on the outer lower surface of the inner tank 3 is also buoyant by the washing water flowing into the outer tank 1, in this way the rib 10 is buoyancy process in more detail Explained as follows.

Since a certain space is formed between the ribs 10 formed on the outer lower surface of the first inner tub 3, it is understood that air is present in the space.

In this state, when the wash water is supplied into the outer tank 1 and the inner tank 3, the inner tank 3 is locked as the washing water is filled from the lower part of the outer tank 1, at this time, the outer side of the inner tank 3 As the air in the space between the ribs 10 formed on the lower surface did not escape between the ribs 10, the air in the space of the ribs 10 was eventually lost. The washing water receives a force (buoyancy) to rise to the top and pushes the inner tank 3 upward. In this case, the liquid balance ring 11 also receives a buoyancy force to rise with a constant force, and as a result, it can be seen that the inner tank 3 can rise vertically to the upper side as described above.

On the other hand, as the inner tank 3 rises, the second boss 9 and the hollow shaft 7 fixed integrally with the inner tank 3 rise.

Accordingly, the upper movable ratchet 9a integrated by the second boss 9 is spaced apart from the upper fixed ratchet 5a formed on the outer circumferential surface of the drive shaft 5 and the outer circumferential surface of the hollow shaft 7. The lower movable ratchet 7a formed at the lower end is engaged with the lower fixed ratchet 8a of the first boss 8 which is integrally fixed to the outer tub 1.

At this time, as described above, as the upper movable ratchet 9a of the second boss 9 and the upper fixed ratchet 5a of the driving shaft 5 are spaced apart from each other, the driving shaft 5 is driven by the driving of the motor 2. It is understood that the inner tub 3 is rotated by receiving the driving force of the motor 2 without receiving the rotational force when the inner tub 3 is rotated. In this case, the lower movable ratchet 7a of the hollow shaft 7 fixed to the inner tub 3 is provided on the lower fixed ratchet 8a of the first boss 8 fixed to the outer tub 1 as described above. As the mesh is engaged, the inner tub 3 is fixed to the outer tub 1 so that it does not rotate. This is understood that the washing of the inner tub 3 is prevented by the inertial force of the laundry generated by the rotation of the rotor 4 during washing, so that the washing is smoothly performed.

On the other hand, when the washing by the operation of each part as described above is completed for the dewatering of the laundry to wash the water in the outer tank (1) and the inner tank (3) as shown in Figure 4 to a separate drainage device not shown Is drained to outside. The buoyancy acting on the inner tank 3 gradually decreases according to the drainage of the wash water, so that the inner tank descends to the lower side inside the outer tank 1 by its gravity.

Meanwhile, the second boss 9 and the hollow shaft 7 fixed integrally with the inner tub 3 also descend as the inner tub 3 descends.

Accordingly, the upper movable ratchet 9a of the second boss 9 is engaged with the upper fixed ratchet 5a of the drive shaft 5 and the lower movable ratchet 7a formed on the hollow shaft 7 Spaced apart from the lower fixed ratchet (8a) of the first boss (8) integrally fixed to (1). At this time, as described above, the upper movable ratchet 9a of the second boss 9 which is integrally fixed to the inner tub 3 is connected to the upper fixed ratchet 5a of the drive shaft 5. It is understood that the inner tub 3 also receives the rotational force along with the rotor 4 during the rotation of the drive shaft 5 by the driving of 2).

At this time, as described above, the lower fixed ratchet 8a of the first boss 8 fixed to the outer tub 1 and the lower movable ratchet 7a of the hollow shaft 7 fixed to the inner tub 3 are provided. It is understood that the inner tank 3 eventually becomes free in the outer tank 1 as it is spaced apart from each other.

Due to this action, the rotor 4 and the inner tank 3 rotate together during dehydration to smoothly dehydrate the laundry.

On the other hand, the drive shaft 5 for transmitting the driving force of the motor 2 to the rotor 4 or the inner tank 3 during washing and dehydration is supported by a plurality of bearings 6 installed in the lower center of the outer tank 1. It can be seen that the drive shaft (5) is prevented from coming off as it is received, and when dewatering, the laundry in the inner tank (3) to one side as the inner tank (3) is rotated together with the rotor (4) When inclined, the inner tub 3 is severely vibrated, and the vibration is attenuated by the liquid balance ring 11 formed along the lower circumference of the inner tub 3. This is because when the liquid balance ring 11 contains liquid, a heavy weight is applied to the lower portion of the inner tank 3 by the liquid balance ring 11 when the inner tank 3 is rotated. It is understood that 3) makes the rotation more stable.

As described above, the present invention is installed in the lower center of the outer tub (1) of the automatic washing machine and the motor (2) for transmitting power while the speed is variable during washing and dehydration is passed through the outer tub (1) and the inner tub (3) As the direct connection with the drive shaft 5 connected to the electron 4 is installed, the structure of the drive unit is simplified, and the clutching during washing and dehydration is performed by the up / down movement of the inner tank 3 by the buoyancy action of the washing water. And declutching can be performed efficiently is a useful design that improved the efficiency and reliability of the automatic washing machine.

Claims (4)

The outer tub 1 is elastically supported in the washing machine main body, and a motor 2 for generating a driving force is installed on the outer lower end surface of the outer tub 1, and the outer tub 1 is rotated under the driving force of the motor 2. In the washing machine provided with the inner tank 3 so as to be rotated under the driving force of the motor 2 in the inner tank 3, the inner tank 3 is a buoyancy force of the water supplied to the washing water. Installed so as to be movable up and down by means of the motor, and the motor 2 is installed at the center of the bottom surface of the outer tub 1, and the motor 2 is installed through the central part of the outer tub 1 and the inner tub 3 Shaft coupling the drive shaft (5) connected to the electron (4), and the upper fixed ratchet (5a) is integrated on the outer peripheral surface of the upper side of the drive shaft (5), the drive shaft (5) in the lower center of the inner tank (3) The hollow shaft 7 is integrally fixed to be movable along the Shanghai simultaneous drive shaft 5 of the inner tank 3 in a wrapped state. In addition, the lower fixed ratchet 8a integrated by the first boss 8 is fixed to the inner bottom surface center of the outer tub 1 while the hollow shaft 7 is wrapped, and the outer side of the hollow shaft 7 is fixed. The lower movable ratchet 7a is integrally fixed to the lower end of the circumferential surface of the hollow shaft 7 so as to be selectively engaged with the lower fixed ratchet 8a of the hollow shaft 7, and the driving shaft 5 is formed at the center of the inner bottom surface of the inner tub 3. Driving device for a fully automatic washing machine, characterized in that by integrating the upper movable ratchet (9a) by the second boss (9) to selectively engage the Shanghai simultaneous upper fixed ratchet (5a) of the inner tank (3). According to claim 1, A plurality of ribs having a space portion is formed in the outer lower surface of the inner tank (3) so that the air present in the space portion of each of the ribs 10 when the wash water flows in Drive of the fully automatic washing machine, characterized in that the rib 10 is subjected to buoyancy. According to claim 1, Rib 10 located on the outermost of the ribs 10 formed on the lower end of the inner tank (3) so that the inner tank receives more buoyancy by water and vibration of the inner tank when dewatering Driving device of a full automatic washing machine, characterized in that the liquid balance ring is mounted to suppress the. The method of claim 1, wherein a plurality of bearings 6 are installed in the lower central portion of the outer tub 1 to support the driving shafts 5 so that the driving shafts 5 are supported by the respective bearings 6. Driving device for a full automatic washing machine.