KR20000001094A - Driving device for washing machine - Google Patents

Abstract

PURPOSE: A washing machine is provided to smoothly embody a clutch function without a clutch, and to offer a washing machine of a simple structure to a user at the same time. CONSTITUTION: The washing machine comprises: an outer tub(2) to be filled the washing water; a suspension(3) to support the outer tub(2) in an out case(1); an inner tub(4) installed to be able to rotate inside the outer tub(2); a pulsator(5) installed to be able to rotate in a lower part of the inner tub(4); a motor pulley V-belt(11) and a clutch pulley(12) to transfer the rotating force of a motor(6) to the inner tub(4) and the pulsator(5); a drain valve(14) to open and close a drain hose(13); a balancer(15) to compensate a non-balance mass to smoothly dehydrate at a dehydration by forming in the upper part of the inner tub(4); a washing shaft(7), the rotating shaft of the pulsator, fixed in the clutch pulley(12) by penetrating a dehydrating shaft(8), and the rotating shaft of the inner tub(4).

Description

Washing machine drive

The present invention relates to a washing machine drive device for changing a complicated clutch structure that simultaneously performs a clutching function, a deceleration function, and a braking function to a relatively simple structure.

As shown in FIG. 1, a general washing machine includes an outer tub 2 in which washing water is contained in an outer case 1 forming the outer part of the washing machine, and a suspension 3 supporting the outer tub 2 to the outer case 1. ), An inner tub 4 rotatably installed in the outer tub 2, a pulsator 5 rotatably installed in the lower portion of the inner tub 4, the inner tub 4 and a pulsator 5. Organically to the coupling and disengagement between the motor 6 rotating in one direction or left and right to drive), and the washing shaft 7 which is the rotational axis of the pulsator 5 and the dehydration shaft 8 that is the rotational axis of the inner tub 4. A clutch 9 for controlling the phosphorus action and reducing or stopping the rotational force of the motor 6, and a motor pulley 10 for transmitting the rotational force of the motor 6 to the inner tank 4 and the pulsator 5. The V-belt 11 and the clutch pulley 12 and the contaminated water formed at the lower portion of the outer tub 2 after washing is completed to the outside of the washing machine. A drain hose 13 for discharging, a drain valve 14 for opening and closing the drain hose 13, and a balancer 15 formed on an upper portion of the inner tank 4 to compensate an unbalanced mass so that smooth dehydration occurs when dewatering. ) Is provided.

In addition, the upper top cover 16 of the washing machine controls a water supply valve 17 for supplying washing water to the outer tub 2, a motor 6, a clutch 9, a water supply valve 17, a drain valve 14, and the like. The controller 18 is provided.

In this case, a four-pole motor having an average rotational speed of about 1800 RPM is used for the motor 6, and the diameter of the motor pulley 10: the diameter of the clutch pulley 12 is about 1: 2 to reduce the rotation speed of the motor 6. It is composed.

The operation of the general washing machine configured as described above will be described below.

First, when the washing operation is described, when the washing water is filled in the outer tank 2 and the power is applied while the laundry is filled in the inner tank 4, the motor 6 is rotated under the instruction of the controller 18. As the motor 6 rotates, the motor pulley 10 fixed to the shaft of the motor 6 also rotates. As the motor pulley 10 rotates, the rotational force of the motor 6 causes the V-belt 11 to rotate. It is transmitted to the clutch pulley 12 through.

When the clutch pulley 12 rotates by the rotational force of the motor 6, the washing shaft 7 fixed to the clutch pulley 12 also rotates, and a pulsator connected to the washing shaft 7 ( 5) is rotated to perform the washing.

At this time, the rotation direction of the motor 6 is rotated left and right at a constant time interval and uniform speed in order to generate the left and right stirring force on the laundry, the washing shaft 7 by the clutch 9 is dewatering shaft (8) You are in an out of state.

On the other hand, assuming that the rotational force of the motor 6 is about 1800 RPM on average, this rotational force is primarily based on the ratio of the motor pulley 10 and the clutch pulley 12 (the diameter of the motor pulley: the diameter of the clutch pulley is 1 :). 2)) to about 900 RPM, and secondly to 100 to 250 RPM by a reduction gear (not shown) using the gear ratio inside the clutch 9 to rotate the pulsator 5 to about 100 to 250 RPM. Giving will allow proper washing.

When the washing is completed, the drain valve 14 is opened under the control of the controller 18, and the dirty washing water used for washing is discharged to the outside of the washing machine along the drain hose 13, and then dehydrates the laundry. do.

In the dehydration, the clutch 9 is operated under the control of the controller 18 so that the washing shaft 7 and the dehydration shaft 8 are connected to each other, and in this state, the motor 6 is connected to the controller 18. Under the control, the motor 6 rotates in one direction, and the rotational force of the motor 6 is changed from the motor pulley 10 to the V-belt 11 to the clutch pulley 12 to the washing shaft 7 and the dewatering shaft 8 to the inner tank 4. ), The pulsator (5) is delivered in order to rotate the inner tank (4) at high speed to dehydrate water contained in the laundry by centrifugal force.

On the other hand, since the rotation speed of the inner tub 4 during dewatering is typically about 900 RPM, the controller 18 operates the clutch 9 when the door (not shown in the drawing) of the washing machine is opened, thereby turning the inner tub within an appropriate time. Forcibly stop (4) to ensure the safety of the user.

In this way, the clutch 9 has a clutching function for controlling power, a deceleration function for reducing the rotational speed of the motor 6, and a brake function forcibly stopping the dehydration shaft 8, and the motor 6 has a controller. According to the control of (18), washing is performed by rotating left and right during washing, and rotating in one direction when washing, and selectively washing and dewatering are performed by one motor 6.

However, in such a conventional washing system, the overall structure of a washing machine is complicated, and in particular, due to the use of precision parts such as a clutch that has a power control function, a deceleration function that reduces the rotational force of the motor, and a brake function that forces the dehydration shaft to stop. There is a problem that the manufacturing cost rises, there is a possibility that a defect occurs, the reliability of the washing machine is lowered.

The present invention has been proposed in view of this point, and an object thereof is to provide a washing machine driving device capable of performing selective administration of washing and dehydration without undergoing complex power transmission and interruption.

The technical means of the present invention for achieving this object is a motor pulley and clutch pulley that mediates the rotational driving force of the motor to the washing shaft and dewatering shaft, through which the washing shaft and dewatering shaft to rotate to power the pulsator and washing tank A clutch device of a washing machine that transmits washing and dehydration strokes to be selected, comprising: a movable block mounted on the dehydration shaft and slidably moved along the axis to slide and move the movable block around the dehydration shaft. An elastic member for inducing a position change by means, a dehydration rotation mediation means for restricting the power transmitted through the clutch pulley according to the position of the movable block to the dehydration shaft, and the dehydration shaft through positioning of the movable block. It characterized in that it comprises a movable block positioning means for intermittent the transmitted power.

1 is a block diagram of a general washing machine.

2 is a block diagram of a washing machine according to the present invention.

3 is an operation of the washing machine driving apparatus according to the present invention,

At the time of washing.

(B) when dehydrated.

*** Explanation of symbols for the main parts of the drawing ***

101: movable block 102: fixed block

103: spring 104: roller

105: lever 105a: refractive portion

106: drainage motor 107: projection

108: groove 109: first bearing

110: second bearing

Hereinafter, described in detail with reference to the accompanying drawings of the present invention.

2 is a configuration diagram of a washing machine according to the present invention, Figure 3 is a detailed view of the drive unit of the washing machine according to the present invention, the outer tank (2) containing the wash water in the outer case (1) forming the outer portion of the washing machine as in the prior art And a suspension (3) for supporting the outer tub (2) to the outer case (1), an inner tub (4) rotatably installed inside the outer tub (2), and a lower portion within the inner tub (4). The pulsator 5, the motor 6 rotating in one direction or left and right, and the rotational force of the motor 6 to drive the inner tank 4 and the pulsator 5, and the inner tank 4 and the pulsator. (5) the motor pulley (10) V-belt (11) and clutch pulley (12), and a drain hose formed in the lower portion of the outer tank (2) to discharge the contaminated water after washing is completed to the outside of the washing machine ( 13) and the drain valve 14 for opening and closing the drain hose 13 and the upper portion of the inner tank 4 when dewatering A balancer 15 is provided to compensate for the unbalanced mass so that the active dehydration is performed. The washing shaft 7, which is the rotation shaft of the pulsator 5, passes through the dehydration shaft 8, which is the rotation shaft of the inner tub 4, and clutches the clutch. It is fixed to the pulley 12.

The upper top cover 16 of the washing machine is provided with a water supply valve 17 for supplying washing water to the outer tank, and a controller 18 for controlling the motor 6, the water supply valve 17, the drain valve 14, and the like.

At this time, the movable block 101 is formed at the lower end of the dewatering shaft 8, and the fixed block 102 is fixed to the clutch pulley 12 so that the movable block 101 moves as the movable block 101 moves. The fixed block 102 is to be coupled or separated, for this purpose is provided with a spring 103 at the rear end of the movable block 101 to provide an elastic force to the movable block 101, the roller 104 is formed at the end Connecting the lever 105 to the drainage motor 106 and operating the lever 105 under the control of the controller 18, and the movable block 101 and the movable block 101 by the organic action of the lever 105 and the spring 103. The fixing blocks 102 are coupled to or separated from each other.

Here, the movable block 101 is keyed to enable linear reciprocation along the dehydration shaft 8 and to prevent idle rotation, and to extend a surface contact angle of the roller 104 to a part of the lever 105. Refractive portions 105a are formed to further increase the moving distance of the block 101.

In addition, a plurality of protrusions 107 are formed in the movable block 101, and a plurality of grooves 108 corresponding to the protrusions 107 are formed in the fixed block 102, so that the movable block 101 is fixed block. In close contact with the 102, the protrusion 107 and the groove 108 are fastened to each other.

In addition, the first bearing 109 and the washing shaft 7 is installed between the dehydration shaft 8 and the outer tub 2 to prevent contact with the outer tub 2 due to the rotation of the dehydration shaft 8. ) And a second bearing 110 is installed between the washing shaft 7 and the dewatering shaft 8 to be installed between the washing shaft 7 and the dewatering shaft 8.

The operation of the present invention configured as described above will be described in detail below with reference to the accompanying drawings.

First, when the washing operation is described, a certain amount of washing water is filled in the outer tank 2, and in the state in which the laundry is filled in the inner tank 4, the motor 6 rotates left and right alternately according to the control of the controller 18. The motor pulley (10) → V-belt (11) → clutch pulley (12) is transmitted in order, and the washing shaft (7) fixed to the clutch pulley (12) and the pulsator (7) connected to the washing shaft (7) 5) is rotated left and right to perform the washing.

In this case, while the lever 105 connected to the drain motor 106 is in the movable block 101 direction, the roller 104 formed at the end of the lever 105 has an inclined surface ( Since the movable block 101 and the fixed block 102 are separated from each other by pushing the movable block 101 upward while rolling along 101a, the laundry shaft 7 and the dewatering shaft 8 are separated from each other. The rotational force generated from the motor 6 and transmitted to the clutch pulley 12 is transmitted only to the washing shaft 7, so that only the pulsator 5 is rotated to perform washing.

When the washing is completed, the controller 18 drives the drain valve 14 to drain all the contaminated water through the drain hose 13 and then dehydrates the laundry.

At the time of dehydration, the motor 6 rotates in one direction under the control of the controller 18, and the rotational force is transmitted in the order of the motor pulley 10 → V belt 11 → clutch pulley 12 in the same manner as when washing. do.

In this case, while the lever 105 connected to the drain motor 106 has come out of the movable block 101, the spring 103 at the rear end of the movable block 101 which has been contracted during washing is relaxed, and the movable block 101 To move the movable block 101 and the fixed block 102 in close contact with each other, whereby the protrusion 107 of the movable block 101 and the groove 108 of the fixed block 102 are fastened to each other to wash the shaft 7. ) And the dewatering shaft 8 are coupled to each other, so that the rotational force generated from the motor 6 and transmitted to the clutch pulley 12 is transmitted to both the washing shaft 7 and the dewatering shaft 8 so that the washing shaft 7 and the dewatering shaft 8 are removed. By rotating the contraction (8) at high speed simultaneously, the laundry is centrifugally dehydrated.

However, such an operation corresponds to a clutching function of intermittent power among the functions of the conventional clutch 9, but the deceleration function and the stop function, which are important among the functions of the clutch, are also problematic.

That is, in case of using a conventional 4-pole motor, since the rotation speed is about 1800 RPM, it should be reduced to about 100 to 250 RPM, which is the rotation speed of the pulsator 5 necessary for smooth washing, and the inner tank 4 during dehydration has an average rotation speed of 900 RPM. Since the high-speed rotation to the extent that the washing machine lid is opened for the safety of the user has to be forced to stop the inner tank 4 has also been described above.

As a solution to this problem, instead of the conventional four-pole motor, it has the function of two-pole and six-pole motors at the same time, it is possible to use a pole change motor (pole change motor) that can implement each according to the pole transformation.

In addition, the ratio of the diameter of the motor pulley 10: the diameter of the clutch pulley 12 is about 1: 5 to 6 so that the rotation speed of the motor 6 can be reduced.

That is, when the pole conversion motor is operated as a 6-pole motor, the average rotation speed is about 1200 RPM, and the rotation speed is reduced by about 1/5 to 1/6 by the ratio of the motor pulley 10 and the clutch pulley 12. Can be decelerated as needed for smooth washing, and when the pole conversion motor is operated as a two-pole motor, the average rotational speed is about 3600 RPM, and this rotational speed is also caused by the ratio of the motor pulley 10 and the clutch pulley 12. It can be decelerated by about 1/5 to 1/6 so that the number of revolutions required for dehydration can be achieved.

In addition, if the user opens the washing machine lid and puts his hand during dehydration, the user's safety is concerned, so that the door lock device is installed on the lid part so that the lid does not open during dehydration so that the function of the conventional clutch can be stopped. You can also suggest.

As described above, the present invention can smoothly perform the clutching function, the deceleration function, and the brake function even in the absence of the clutch, thereby simplifying the overall structure of the washing machine and improving productivity and manufacturing cost due to the reduction of the number of parts. It is possible to reduce, and the defective rate is reduced, thereby improving the reliability of the washing machine.

Claims (9)

There is a motor pulley and a clutch pulley that mediates the rotational driving force of the motor to the washing shaft and the dehydration shaft. The washing machine rotates the washing shaft and the dehydration shaft and transmits the power to the pulsator and the washing tank to induce washing and dehydration stroke selection. In the clutch device of, A movable block mounted to the dewatering shaft and interlocked and slid along the corresponding shaft to move the slide; An elastic member for holding the movable block around the de-shrinkage to induce a positional change by the force of dehydration; De-shrinkage rotation medium means for limiting the power transmitted through the clutch pulley in accordance with the position of the movable block to the de-shrinkage, and Washing machine drive device characterized in that it comprises a movable block positioning means for intermittent the power transmitted to the dehydration shaft through the positioning of the movable block. The method of claim 1, Washing machine drive device characterized in that the bearing is installed in the rotating space of the washing shaft to prevent the eccentric rotation and wear of the washing shaft. The method of claim 1, The movable block mounted to the dehydration shaft is a washing machine driving device, characterized in that the linear movement is possible along the dehydration shaft, the key combination to prevent idling. The method of claim 1, The de-shrink rotation medium means includes a protrusion protruding from the movable block; Washing machine drive device characterized in that consisting of a clutch hub having a corresponding groove for guiding the projection on the surface. The method of claim 1, The movable block positioning means includes a gradient surface formed along the outer circumference of the movable block; A roller sliding in contact with the gradient surface by pressing force and slid to the holding surface angle; A lever for inducing pressurized rolling motion of the roller; Washing machine drive device characterized in that consisting of a movable body for moving the lever. The method of claim 5, The lever for supporting the roller is a washing machine drive device, characterized in that the deflection portion to increase the moving distance of the movable block to increase the rolling surface contact angle of the roller along the gradient surface. The method according to claim 1 or 6, Washing machine drive device characterized in that the movable body as a drain motor. The method of claim 1, Washing machine drive device characterized in that the motor using a pole conversion motor having the function of a two-pole motor and a six-pole motor at the same time. The method of claim 1, Washing machine drive device characterized in that the ratio of the diameter of the motor pulley and the diameter of the clutch pulley is 1: 5 to 6.