KR100308282B1 - Driving apparatus for washing machine - Google Patents

Abstract

The present invention relates to a driving device of a fully automatic washing machine, and to simplify the structure of the clutch to reduce the cost, to eliminate the brake band 24 for braking by the conventional forced friction to reduce the electric motor of the variable motor (31) By braking it is possible to improve the durability.

Description

Driving device of the fully automatic washing machine {DRIVING APPARATUS FOR WASHING MACHINE}

The present invention relates to a driving device of a fully automatic washing machine, and more particularly, to a driving device of a fully automatic washing machine suitable for simplifying the overall structure to reduce the cost.

The structure of a general automatic washing machine is shown in FIG. 1, which is briefly described, the outer tub 2 is installed inside the housing 1, and the dehydrating tank 3 is rotatable inside the tub 2. The washing pulsator 4 is rotatably installed on the inner lower surface of the dehydration tank 3.

In addition, a clutch assembly 5 is installed at the lower center of the outer tub 2 so as to rotate the pulsator 4 or convert the pulsator 4 and the dehydration tank 3 to rotate at the same time. And a motor 6 for transmitting power at regular intervals from the clutch assembly 5 is connected to the clutch assembly 5 by a drive belt 7.

As shown in FIG. 2, the clutch assembly 5 has a pulley 11 that receives power from the driving belt 7 and is fixed to a lower end of the gear shaft 12, and the gear shaft 12 is fixed to the gear shaft 12. Is connected to the washing shaft 14 connected to the planetary gear 13 and the pulsator 4, so that the washing is performed by rotating the pulsator 4 by the power transmitted to the pulley 11 during washing. do.

In addition, a clutch spring 17 is wound around an end circumferential surface of the lower dehydration shaft 16 installed above the spring block 15 and the spring block 15 that are serration-coupled to the lower end of the gear shaft 12. A gear housing 18 is integrally installed on the upper side of the lower dehydration shaft 16, and an upper dehydration shaft 19 connected to the dehydration tank 3 is connected to the upper side of the gear housing 18. When the spring block 15 and the lower dehydration shaft 16 are connected by the clutch spring 17 during dehydration, the dehydration tank 3 is rotated to perform the dehydration operation.

In addition, upper and lower clutch bosses 21 and 21 'are provided at upper and lower ends of the clutch spring 17, and brake levers are provided at gears of upper and lower clutch bosses 21 and 21'. 22 is coupled, and the brake lever 22 is interlocked with the interlocking lever 23 operated by the solenoid (not shown), so that when the washing or dehydration, the clutch spring ( 17) power off or connect.

The brake band 24 is wound around the outer circumferential surface of the gear housing 18. When dehydration is stopped and the solenoid (not shown) is turned off, the cam 25 is released by the clutch boss 21 while the brake lever 22 is released. 21 ') and the brake band 24 is pressed against the outer peripheral surface of the gear housing 18 to stop the rotation of the dehydration tank (3).

However, there have been many problems in the driving device for switching washing and dehydration in the conventional fully automatic washing machine as described above.

First, the planetary gear 13 installed to reduce the rotational speed of the motor (6) during washing to transfer power to the pulsator (4) is combined with a number of gears, so a lot of noise during operation There was a problem.

Secondly, since the brake band 24 provided to stop the dehydration operation stops the rotation of the dehydration tank 3 by forcibly pressing the outer circumferential surface of the gear housing 18 during operation, the brake band 24 is repeated for a long time. There was a problem that there is a fear of wear or breakage of the brake band 24 in use.

The main object of the present invention is to provide a driving apparatus for a fully automatic washing machine that does not have various problems as described above.

Another object of the present invention is to reduce the speed of the pulsator even by eliminating the use of planetary gears to simplify the overall structure and to provide a drive device for a fully automatic washing machine suitable for preventing noise generated by the planetary gears. Is in.

Still another object of the present invention is to provide a driving apparatus of a full-automatic washing machine, which can prevent abrasion and breakage of the brake portion during long-term use by excluding a brake operation by friction such as a brake operation of the brake band.

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

Figure 2 is a longitudinal sectional view showing a clutch assembly of a conventional fully automatic washing machine.

Figure 3 is a longitudinal sectional view showing a drive device of the present invention fully automatic washing machine.

Figure 4 is a state diagram for explaining a state in which power of the braking drive shaft and the dehydration shaft of the present invention is cut off.

Figure 5 is a state diagram for explaining a state in which the power of the braking drive shaft and the dehydration shaft is connected in the present invention.

Explanation of symbols on the main parts of the drawings

31: variable motor 31a: motor shaft

32: motor drive shaft 33: pulsator

34: washing shaft 35: drive interlocking means

36: dehydration tank 37: dehydration tank

39: braking interlocking means 61: braking drive shaft

62: Braking Drive Pulley 63: Braking Drive Pulley

64: Brake belt 71,71 ': Forward, reverse clutch spring

72,72 ': Upper and lower clutch boss 73: Lever

74: solenoid

In order to achieve the object of the present invention as described above, a variable motor capable of forward, reverse rotation and speed change, and one end of which is connected to the motor drive shaft of the variable motor by driving interlocking means, and the other end of which is fixed to a pulsator And a dehydration shaft which is installed on the outer side of the washing shaft in an undesired manner, the upper end portion of which is coupled to the dehydration tank, a braking drive shaft which is installed on the outer side of the motor driving shaft, and the washing shaft, the dehydration shaft, and the motor driving shaft. Forward and reverse clutch springs respectively installed to wind the connecting portion of the braking drive shaft, upper and lower clutch bosses respectively coupled to upper and lower ends of the forward and reverse clutch springs, and gear parts of the upper and lower clutch bosses. A lever that is installed to be coupled, a solenoid that is connected to the rear end of the lever, and a brake that is installed to interlock with the brake driving shaft and the dehydration shaft. The drive device for a fully automatic washing machine, characterized in that configured hayeoseo provided with interlocking means.

Hereinafter, with reference to the embodiment of the accompanying drawings, an embodiment of the driving apparatus of the present invention automatic washing machine configured as described above in more detail as follows.

Figure 3 is a longitudinal sectional view showing a drive device of the fully automatic washing machine of the present invention, as shown, the drive device of the fully automatic washing machine of the present invention is the motor shaft 31a of the variable motor 31 capable of forward, reverse rotation and speed change The motor drive shaft 32 is connected and installed, and a washing shaft 34 having an upper end fixed to the pulsator 33 at a predetermined distance from the motor drive shaft 32 is provided. The washing shaft 34 is a driving interlocking means 35, and the driving driving pulley 51 and the driving driven pulley 52, which are installed at the lower end, are connected to the driving belt 53 to transmit power.

In addition, a hollow dewatering shaft 37 whose upper end is connected to the dewatering tank 36 is wrapped around the outer circumferential surface of the washing shaft 34, and is formed at the lower end of the dewatering shaft 37. The spring winding part 37a and the spring winding part 34a formed in the lower end part of the said washing shaft 34 are provided so that the normal forward clutch spring 71 may be wound.

In addition, the spring winding portion 32a of the motor driving shaft 32 and the spring winding portion 61a of the braking driving shaft 61 are provided so that a normal reverse clutch spring 71 'is wound around the braking driving shaft. The 61 and the dehydration shaft 37 are brake interlocking means 39, respectively, and a braking driving pulley 62 and a braking driven pulley 63 are connected to the braking belt 64, respectively.

The upper and lower ends of the forward and reverse clutch springs 71 and 71 'are coupled to the upper and lower clutch bosses 72 and 72', respectively, to be widened or contracted, and the upper and lower clutches installed as described above. The bosses 72 and 72 'are configured to open or deflate the forward and reverse clutch springs 71 and 71' while rotating at an angle by one lever 73. The lever 73 The solenoid 73 connected to the rear end is capable of moving forward and backward.

Referring to the operation during washing, dehydration, braking in the fully automatic washing machine is installed as the drive device of the present invention configured as described above are as follows.

First, the operation | movement at the time of washing is demonstrated.

In the washing mode, as the lever 73 is advanced by the solenoid 74, the upper and lower clutch bosses 72 and 72 'are pushed, and the forward and reverse clutch springs 71 are as shown in FIGS. Open 71 '. In this state, the variable motor 31 repeats the forward and reverse rotation. When the variable motor 31 rotates in the forward and reverse directions, the motor driving shaft 32 connected to the motor shaft 31a rotates. The driving drive pulley 51 fixed to the motor drive shaft 32 rotates to rotate the driving driven pulley 52 connected to the driving belt 53. The pulsator shaft 34 on which the driven pulley 52 is fixed is rotated, and the laundry inside the dehydration tank 36 is rotated while the pulsator 33 connected to the washing shaft 34 is rotated forward and backward. Washed.

After the washing operation as described above for a predetermined time, the laundry is dehydrated is completed, the operation is as follows.

When the washing machine is switched to the dehydration mode, the washing water is dewatered, and the force applied to the upper and lower clutch bosses 72 and 72 'is removed by the solenoid 74 being reversed. When the variable motor 31 rotates in the forward direction, the washing shaft 34 and the pulsator 33, which are interlocked with the motor driving shaft 32, rotate together with the forward clutch spring 71 as shown in b) of FIG. While winding, the power of the washing shaft 34 is also transmitted to the dehydrating shaft 37 to spin the dehydrating tank 36 at high speed, thereby dehydrating the laundry.

When the user opens the lid of the washing machine after the dehydration operation is performed for a predetermined time, the pulsator 33 and the dehydration tank 36 rotating at high speed are braked to stop the rotation of the dehydration tank 36 in a short time. Is as follows.

In general, when the dehydration operation is completed, the pulsator 33 and the dehydration tank 36 continue to rotate even after the power is turned off due to the high speed rotational inertia generated during dehydration. In this case, the braking force of the variable motor 31 is electrically braked. When decelerating by the motor, the braking force of the variable motor 31 decelerates the motor driving shaft 32, the driving interlocking means 35, and the washing shaft 34, thereby decelerating the pulsator 33, and the dehydration shaft ( 37) is transmitted to the braking driven pulley (63) → braking belt (64) → braking driving pulley (62) → braking drive shaft (61), which is opposite to the braking direction of the motor driving shaft (32). As in the case of 5a), the reverse clutch spring 71 'is wound and the braking force of the motor drive shaft 32 is reduced by the braking drive shaft 61, the braking drive pulley 62, the braking belt 64, and the braking driven pulley. 63 is delivered to the dehydration shaft 37, and the dehydration tank 36 is also decelerated and braked.

As described above in detail, the driving apparatus of the present invention fully automatic washing machine has the effect of washing without noise in a state in which the cost is reduced by eliminating the planetary gear, which is essentially used in the past, and braking by conventional forced friction By eliminating the brake band and allowing braking by the electric deceleration of the variable motor, there is an effect of improving durability.

Claims (2)

A variable motor capable of forward, reverse rotation and speed change, one end of which is connected to the motor drive shaft of the variable motor by a driving interlocking means, and the other end is installed in an outer side of the laundry shaft, which is fixed to the pulsator. A dehydration shaft having an upper end coupled to a dehydration tank, a braking driving shaft installed in an outer side of the motor driving shaft, and a washing shaft and a dehydration shaft, and fixed to be connected to the connection portion of the motor driving shaft and the braking driving shaft, respectively. A reverse clutch spring, upper and lower clutch bosses coupled to the upper and lower ends of the forward and reverse clutch springs respectively, and levers installed to be coupled to the gears of the upper and lower clutch bosses, and rear ends of the levers. It is characterized in that it comprises a solenoid connected to the installation, and the braking interlocking means is installed so that the braking drive shaft and the dehydration shaft is interlocked Drive system for the automatic washing machine. According to claim 1, wherein the braking linkage means for braking drive pulley press-fitted to the braking drive shaft, the braking driven pulley press-fitted on the outer side of the dehydration side and the braking drive pulley and the braking driven pulley for connecting Driving device for a full automatic washing machine, characterized in that the braking belt.