KR950004281B1 - Washing machine driving device - Google Patents

Abstract

The driving unit includes a housing supported by the outer wall of a motor, a rotary drying shaft supported by the housing, and a washing shaft supported by the same axis as supports the drying shaft. The washing shaft is installed in the drying shaft and rotated by the power of the motor. The driving unit further includes an outer tub fixed to the housing, control means supported by the housing for controlling a rotation of the drying shaft, a stiffener inserted into the drying shaft and fixed to a washing/drying tub, a pulsator fixed to the upper part of the washing shaft with a spline, power transmitting means for rotating the washing/drying tub by transmitting the power of the pulsator to the stiffener in a drying mode, thereby reducing the production cost due to simplifying the construction of the washing machine's driving unit, improving productivity, and preventing a loss of power.

Description

Drive of fully automatic washing machine

1 is a block diagram of a general automatic washing machine.

2 is a cross-sectional view showing a clutch configuration of a general automatic washing machine.

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

(A) and (b) of Figure 4 shows the action of the automatic washing machine according to the present invention, (a) is an enlarged cross-sectional view showing a washing mode, (b) is an enlarged cross-sectional view showing a dehydration mode.

* Explanation of symbols for main parts of the drawings

32: motor 35: housing

38: dewatering 39: laundry shaft

41: outer tank 43: washing and dehydration tank

45: dewatering tank reinforcement 46: spline

47: pulsator 57: buoy housing

58: buoy 59: coupling groove

60, 62: through hole 61: vertical guide groove.

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 which can reduce the production cost and improve productivity by simplifying the overall structure by eliminating the use of a complicated structure of the clutch.

As shown in FIG. 1, the driving apparatus of the general automatic washing machine is rotatably provided with the washing and dehydrating tank 2 in the inside of the water tank 1, and pulsed inside the washing and dehydrating tank 2. The rotor 3 is rotatably installed, and the washing and dehydrating tank 2 and the pulsator 3 are provided with the dehydrating tank shaft 5 and the pulsator shaft of the clutch 4 mounted on the bottom center of the water tank 1. The V-belt 10 is connected to the driving roller 8 of the motor 7 and the driven pulley 9 of the clutch 4 respectively coupled to the 6 and mounted on one side of the bottom surface of the water tank 1. As the rotational driving force of the motor 7 is divided by the clutch 4, the washing and dehydrogenation 2 is stopped in the washing mode, and only the pulsator 3 is rotated in the left and right directions, and in the dehydration mode. The washing and dewatering tank 2 and the pulsator 3 are rotated in one direction at the same speed.

The clutch 4 will be described in detail. As shown in FIG. 2, the spring block 12 coupled to the lower portion of the gear shaft 11, the lower shaft 14 and the spring of the gear housing 13 are described. A clutch spring 15 coupled to an outer circumferential surface of the block 12 to selectively transmit rotational driving force of the motor 7 to the dehydration tank 5 and the pulsator shaft 6, and an outer circumferential surface of the clutch spring 15. It is rotatable to the lower end of the brake lever 17 coupled to the clutch boss 16 having a tooth 16a formed on the outer circumferential surface and a valve actuating magnet (not shown) mounted on the other side of the bottom surface of the water tank 1. The cam 18, which is installed on the teeth 16a of the clutch boss 16, the anti-rotation spring 19 for preventing the reverse rotation of the washing and dewatering tank 2, and the decelerated power in the washing mode A planetary gear 20 serving to transmit the pulsator shaft 6 and a brake band 21 surrounding the outer circumferential surface of the gear housing 13. Consists of

In the driving apparatus of a general automatic washing machine configured as described above, when the driving pulley 8 is turned left by the driving of the motor 11 in the washing mode, the driven pulley 9 connected to the V-belt 10 is rotated twice before turning. Accordingly, the clutch spring 15 coupled to the outer circumferential surface of the lower shaft 14 of the spring block 12 and the gear housing 13 is operated in a releasing direction so that the clutch spring 15 and the spring block 12 A gap is formed therebetween so that the rotational force of the spring block 12 does not reach the lower shaft 14 of the clutch spring 15 and the gear housing 13, so that the dehydration tank 5 does not rotate and the spring block ( Power is transmitted only to the gear shaft 11 to which 12) is coupled, so that the power decelerated by the planetary gear 20 is transmitted to the feeler shaft 6.

At this time, since the brake band 21 surrounds the outer circumferential surface of the gear housing 13 at a predetermined pressure, the brake band 21 reliably regulates the rotational operation of the gear housing 13.

In such a washing mode, the washing and dehydrating tank 2 is stopped, and only the pulsator 3 is rotated in the left and right directions to stir the laundry inside the washing and dehydrating tank 2, and the motor 7 When the drive pulley 8 is rotated to the right by the automatic program, the clutch spring 15 is operated in the winding direction so that the clutch spring 15 and the spring block 12 are in close contact with each other so that the rotational force of the spring block 12 is achieved. The clutch spring 15 is transmitted to the lower shaft 14 of the gear housing 13, but at this time, the valve actuation magnet is maintained in an OFF state, so the cam of the brake lever 17 is maintained. A clutch spring (15) is caught by the teeth (16a) of the clutch boss 16 and pushes the teeth (16a), and thus the clutch spring (15) having one end at the engaging groove (not shown) of the clutch boss (16). Strain is generated between the clutch spring (15) and the spring block (12) Since the spacing is formed and slipped, the dehydration tank shaft 5 also rotates only the pulsator shaft 6 without being rotated.

On the other hand, in the dehydration mode, the driving pulley 8 of the motor 7 is always turned right, so the clutch spring 15 is operated in the winding direction, and the clutch spring 15 and the spring block 12 are in close contact with each other. At this time, the valve actuation magnet is turned on to disengage the cam 18 of the brake lever 17 from the teeth 16a of the clutch boss 16 and at the same time the brake band 21 is provided on the outer circumferential surface of the gear housing 13. By deviating, the rotational force of the spring block 12 is transmitted to the lower shaft 14 of the gear housing 13 to rotate the gear housing 13 at undecelerated high speed, and thus the pulsator shaft 7 and the dehydration tank shaft ( 6) High rotation in one direction to perform the normal dehydration process.

Then, after the dehydration mode is completed, when the valve actuation magnet is turned off to release the brake lever 17, the cam 18 is caught between the teeth 16a of the clutch boss 16 and the brake band 21 at the same time. Is pressed against the outer circumferential surface of the gear housing 13 to stop the rotation operation of the gear housing 13.

However, the driving apparatus of the general automatic washing machine as described above has a structure in which the motor 7 and the clutch 4 are separately installed so that the power of the motor 7 is transmitted to the clutch 4 through the V belt 10. As the overall structure of the automatic washing machine is complicated by the use of the clutch 4 of a complicated structure, the production cost is increased, the productivity is lowered, and the rotational power is lost due to the power transmission by the V-belt 10. There were several issues.

It is a main object of the present invention to provide a driving apparatus of a fully automatic washing machine which can reduce the production cost and improve productivity by simplifying the overall structure by eliminating the use of a clutch of a complicated structure.

Another object of the present invention is to provide a driving apparatus of a fully automatic washing machine to prevent power loss by eliminating the use of a V-belt for power transmission.

In order to achieve the object of the present invention as described above, the housing is supported on the outer peripheral wall of the motor, the dehydration shaft is rotatably supported on the housing, and is coaxially supported in the interior of the dehydration shaft to rotate by the power of the motor A washing shaft which is fixed to the housing, an outer tub fixed to the housing, braking means supported on the housing to regulate the rotational operation of the dehydration shaft, a dehydration tank reinforcement inserted into the dehydrator shaft and fixed to a washing and dewatering tank, and A pulsator coupled and fixed by a spline at the upper end, and a driving device of a full-automatic washing machine characterized by comprising a dehydration tank power transmission means for rotating the washing and dehydration tank by transmitting the power of the pulsator to the dehydration tank reinforcement in the dehydration mode. Is provided.

Hereinafter, the driving apparatus of the fully automatic washing machine according to the present invention will be described according to the embodiment shown in the accompanying drawings.

3 is a cross-sectional view showing a driving device of the automatic washing machine according to the present invention. As shown in the drawing, the driving device of the automatic washing machine according to the present invention includes a motor 32 having a drive shaft 31 and the motor ( A housing 35 having a predetermined shape fixed to the Brekit 33 attached to the outer circumferential wall of the housing 32 with a fixing screw 34, and upper and lower bearings fixed to upper and lower portions of the inner wall of the housing 35; 36 and 37, the dehydration shaft 38 supported by the upper and lower bearings 36 and 37, and the dehydration shaft 38 are coaxially supported inside the dehydration shaft 38 to rotate with the power of the motor 32. The sealer 39 is interposed between the washing shaft 39, the outer tub 41 fixed to the housing 35 with the set screw 40, and the housing 35 and the outer tub 41 to maintain airtightness. (42), braking means supported by the housing (35) to regulate the rotational motion of the dehydration shaft (38), and inserted into the dehydration shaft (38) and in the washing and dewatering tank (43). A dehydration tank reinforcement 45 fixed by a fixing screw 44, a pulsator 47 fixed to the upper end of the washing shaft 39 by a spline 46, and an upper end of the washing shaft 39. A dehydration tank fastening nut 48 for fastening and fixing, and a dehydration tank power transmission means for rotating the washing and dehydration tank 43 by transmitting power of the pulsator 47 to the dehydration tank reinforcement 45 in the dehydration mode. It is.

The motor 32 is a variable speed motor that can be rotated at a low speed during washing and a high speed rotation when dewatering.

Rotational force of the motor 32 is coupled to the rotary shaft 31, the lower flexible coupling 49 for power transmission without impact, and the upper flexible coupling 49 and the upper flexible coupled to the washing shaft 39, respectively The bushings 51 and 52 which are transferred to the washing shaft 39 by the coupling 50, and are supported by the washing shaft 39 and the upper flexible coupling 50 at the inner side of the dehydration shaft 38. Each of these is interposed.

The braking means is rotatably coupled to the shaft 53 fixed to the housing 35 and coupled to a drain solenoid (not shown), and a brake lever 54 coupled to the shaft 53 and the brake lever. A torsion spring 55 for elastically blocking 54, and a brake band 56 connected to the brake lever 54 and wound around the outer circumferential surface of the dehydration shaft 38.

The dehydration tank power transmission means is a buoy housing (57) formed in the lower portion of the pulsator 47, the buoy housing (57) is inserted into each of the buoys (buoy) are lifted by buoyancy according to the wash water level (58) and the coupling groove (59) formed on the upper surface of the dehydration tank reinforcement (45) and seated at the lower end of the buoy (58).

The buoy housing 57 has a through hole 60 through which the washing water flows into the upper end thereof, and a vertical guide groove 61 is formed therein so that the buoy 58 is elevated in the vertical direction.

The bottom surface of the coupling groove 59 formed on the upper surface of the dehydration tank reinforcement 45 is formed with a through-hole 62 through which the wash water flows out.

The buoy housing 57 and the coupling groove 59 are preferably formed in various portions radially from each other, and should be formed at positions corresponding to each other so that the buoy 58 descends to the bottom of the coupling groove 59. .

As shown in (a) and (b) of FIG. 4, the coupling groove 59 may be formed with an inclined portion 59a on one side.

The driving apparatus of the fully automatic washing machine according to the present invention configured as described above stops the washing and dehydrating tank 43 in the washing mode as in the conventional case, and rotates only the pulsator 47 in the left and right directions, and dewateres it. In the mode, the washing and dehydrating tank 43 and the pulsator 47 are operated at the same speed. It is made to rotate in one direction.

First, in the washing mode, when the user selects the washing mode by switching the control of the main body from the panel, the washing water for washing is supplied to the inside of the washing and dehydrating tank 43, so that the buoy housing 57 The washing water flows into the through hole 60 so that the buoy 58 vertically rises along the vertical guide groove 61 of the buoy housing 57 due to buoyancy, so that the lower end of the buoy 58 has a dehydration tank reinforcement 45. It will be out of the coupling groove (59).

At the same time, the motor 32 is driven so that its driving force passes through the upper flexible coupling 50 through the lower flexible coupling 49, then is transferred to the washing shaft 39, and then coupled to the spline 46. The pulsator 47 is transferred to the pulsator 47 so as to rotate the pulsator 47 in the forward and reverse directions to perform a conventional washing process.

At this time, the brake band 56 is to hold the outer circumferential surface of the dehydration shaft 38 to the strongly compressed opponent to regulate the rotation operation of the dehydration side 38.

Meanwhile, immediately before the dehydration mode, the rinsing mode in which the washing water contained in the washing-and-dehydrating tank 43 is drained by the driving of the drainage solenoid (not shown) is started, and at this time, the level of the washing water is gradually lowered. Accordingly, the buoy 58 is also lowered to the upper surface of the dehydration tank reinforcement 45 to stop once.

Subsequently, when the rinsing mode is completed, all of the washing water is drained from the washing and washing water tank 43 and at the same time, the solenoid for drainage is turned off while the brake band 56 is released from the outer circumferential surface of the dehydration shaft 38. ) Will no longer be bound.

At this time, since the buoy 58 is lowered as shown in (b) of FIG. 4 (a), the buoy 58 is coupled to the coupling groove 59 of the dewatering tank reinforcement 45, thereby lowering the motor 32. Drive force is transmitted to the pulsator 47, the washing and dewatering tank 43, and the washing shaft 39, so that the pulsator 47, the washing and dewatering tank 43, and the washing shaft 39 are The dehydration process is performed while rotating in the same direction.

When the dehydration mode is completed or the dehydration process is forcibly stopped during the dehydration mode, the drain valve driving solenoid is turned off to release the brake lever 54 so that the dehydration shaft 38 finishes with the brake band 56. Stop by force.

As described above, the driving apparatus of the fully automatic washing machine according to the present invention reduces the production cost, improves the productivity, and prevents the loss of power by simplifying the overall configuration by eliminating the use of a complicated clutch. There is an effect such as.

Claims (3)

The housing 35 supported on the outer circumferential wall of the motor 32, the dehydration shaft 38 rotatably supported by the housing 35, and the coaxially supported inside the dehydration shaft 38 to support the motor ( Washing shaft 39 rotated by the power of 32, outer tub 41 fixed to the housing 35, braking means supported on the housing 35 to regulate the rotational operation of the dehydration shaft 38; , A dewatering tank reinforcement 45 inserted into the dewatering shaft 38 and fixed to the washing and dewatering tank 43, and a pulsator coupled and fixed to the upper end of the washing shaft 39 by a spline 46. And a dehydration tank power transfer means for transmitting the power of the pulsator 47 to the dehydration tank reinforcement 45 to rotate the washing and dehydration tank 43 in the dehydration mode. Drive system. According to claim 1, wherein the dewatering tank power transmission means is inserted into the buoy housing 57 and the buoy housing 57 formed radially in the lower portion of the pulsator (7), the washing water level The buoy 58, which is elevated by buoyancy, is formed on the upper surface of the dehydration tank reinforcement 45 corresponding to the buoy housing 57, and includes a plurality of coupling grooves 59 on which the lower end of the buoy 58 is seated. Drive of the electronic washing machine, characterized in that. According to claim 2, The buoy housing 57 has a through hole 60 through which the washing water flows in the upper end, the resin guide groove 61 is formed so that the buoy 58 is elevated in the vertical direction, the coupling The driving device of the fully automatic washing machine, characterized in that the through-hole 62 through which the wash water flows out on the bottom of the groove (59).