KR200215380Y1 - Device for transformation velocity in drum type washing machine - Google Patents

Abstract

The present disclosure relates to a transmission of a drum type washing machine for narrowing the driving variable speed range of a motor.

The present invention is characterized in that the ratio of the washing pulley and the motor pulley is variable according to the rotational speed of the motor,

Accordingly, the operating variable speed range of the motor can be narrowed, so that it can be operated in a range in which the efficiency of the motor is good, thereby improving efficiency and extending the life of the motor. There is an advantage to save power.

Description

Device for transformation velocity in drum type washing machine

The present invention relates to a drum type washing machine, and more particularly, to a transmission apparatus of a drum type washing machine for reducing the range of the variable speed operation of the motor by varying the ratio of the washing pulley to the motor pulley according to the rotational speed of the motor.

In general, a washing machine includes a pulsator type, an agitator type, a drum type, and the like. Among them, the drum type washing machine has no noise compared to other washing machines, so it is less noise, and is mainly used as a large-capacity business washing machine due to the small amount of water used. Recently, the drum type washing machine has been developed for home use.

Such a drum type washing machine has a device as shown in FIG.

The apparatus shown in FIG. 1 is described as an example of a drum type washing machine according to the prior art.

The drum type washing machine includes an outer tub 4 supported by a spring 2 and a damper 3 as a shock absorber inside the casing 1, and an inner tub 5 located inside the tub 4 to perform washing and dehydration. And a motor 6 providing a driving force to the inner tank 5, a motor pulley 7 provided on the shaft 6a of the motor 6, and a washing pulley 8 provided on the drive shaft 5a of the inner tank 5; ) And a belt 9 connecting the washing pulley 8 and the motor pulley 7.

At this time, the washing pulley 8 and the motor pulley 7 is usually formed in a ratio of 12: 1 to reduce the rotational force of the motor 6.

The drum-type washing machine according to the related art configured to fill the washing water at a predetermined level in the outer tank 4 and rotate by applying power to the motor 6 in a state in which laundry and a predetermined amount of detergent are put in the inner tank 5. do.

When the motor 6 rotates, this rotational force is transmitted to the inner tank 5 through the motor pulley 7, the belt 9, and the laundry pulley 8, so that the inner tank 5 rotates.

At this time, the three large washing blades not shown in the drawings formed on the inner tank 5 draws the laundry out of the water according to the rotation of the inner tank 5, and when the washing wing is at a predetermined angle, the laundry is moved by gravity and the laundry. It will fall freely over the tax solution and in this way it will transfer the mechanical and frictional forces to the laundry to perform the washing.

After washing, the rinsing is performed in the same manner, and after the rinsing, the inner tank 5 is rotated at a high speed in one direction to perform dehydration.

Here, the inner tank 5 should have a rotational force of about 50rpm when washing, about 600 ~ 1000rpm when dewatering, this rotational force is provided according to the rotational force of the motor (6) and the ratio of each pulley (7) (8). .

That is, since the ratio of the washing pulley 8 and the motor pulley 7 is fixed at about 12: 1, the motor 6 is about 600rpm when washing and about 7200 when dehydrating to obtain the rotational force of the inner tank 5 as described above. This means that it should rotate around ~ 12000 rpm.

In general, the efficiency of the motor is the best at the rated output, and the efficiency is significantly reduced when the rated point is out of the range. In the case of a conventional drum washing machine, the variable speed range is about 600 to 12000 rpm, so the efficiency of the motor is It is lowered, there is a problem that the power consumption is also increased.

Therefore, in washing, the ratio of washing pulley and motor pulley is increased to increase the rotational speed of the motor, and in the case of dehydration, the ratio of washing pulley and motor pulley is reduced in order to reduce the rotational speed of the motor and to create an effect more than the conventional one. A pulley structure that can be used is preferable.

Therefore, the present invention excludes all the problems caused by the conventional ratio of the washing pulley and the motor pulley is fixed, the transmission of the drum type washing machine to reduce the variable speed range of the motor by changing the ratio of the washing pulley and the motor pulley according to the washing mode or dehydration mode The purpose is to provide.

In another aspect, the aim is to reduce the power input of the motor to reduce power consumption and to extend the life of the motor.

1 is a longitudinal sectional view of a general drum type washing machine,

2 is a motor pulley configuration diagram of a drum type washing machine according to the present invention,

3 is a configuration of a laundry pulley of the drum type washing machine according to the present invention.

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

101: motor pulley, 102: first fixing body, 103: first movable body, 104: first spring, 105: spacer, 106: mass, 107: support, 108: belt, 109: washing pulley, 110 : Second fixing body, 111: second movable body, 112: second spring, 113: spring supporter

In accordance with an aspect of the present invention, there is provided a transmission apparatus of a drum type washing machine, including: an inner tank for washing and dehydrating, a motor providing a driving force to the inner tank, a motor pulley connected to the shaft of the motor, and a washing connected to the driving shaft of the inner tank. In a drum type washing machine including a pulley, a belt connecting the laundry pulley and the motor pulley:

The motor pulley, (1) a first fixture fixed to the shaft of the motor; (2) a first movable body spaced apart from the first fixed body by a predetermined distance; (3) at least one first elastic member interposed between the first fixed body and the first movable body to provide a fixed repulsive force in the outward direction to the first movable body; And (4) at least one mass providing the variable repulsive force in the inward direction to the first movable body in accordance with the rotational centrifugal force of the motor;

The washing pulley, (1) a second fixing body fixed to the drive shaft of the inner tank; (2) a second movable body spaced apart from the second fixed body by a predetermined distance and moving in a direction opposite to the movement direction of the first movable body; And (3) at least one second elastic member positioned outside the second movable body to provide a fixed repulsive force in the inward direction to the second movable body.

Preferably, the mass comprises: (1) a sphere having a predetermined mass; And (2) a support having one end connected to the sphere and the other end contacting the first movable body to mediate the force of the sphere according to the rotational centrifugal force of the motor to the first movable body side.

Preferably, the first fixing body and the first movable body, the second fixing body and the second movable body are inclined outwardly from both ends to an arbitrary position, and the belt is fixed to the first fixing body. And a trapezoidal shape in cross section so as to be in sliding contact with the inclined surfaces of the first movable body, the second fixed body, and the second movable body.

In this case, in the washing mode, the influence of the centrifugal force is small so that the effective radius of the motor pulley becomes small while the effective radius of the washing pulley becomes large, so that the rotational speed of the motor can be realized at a higher side than the conventional structure. The effective radius of the motor pulley is increased by increasing the centrifugal force according to the rotational speed, while the effective radius of the washing pulley is reduced, so that the rotational speed of the motor can be realized at a lower side than the conventional structure.

As a result, the variable speed range of the motor can be significantly narrowed, so that the motor can be operated in a range in which the efficiency is good, and the input of the washing machine can be reduced, thereby reducing power consumption.

And, there may be a plurality of embodiments of the present invention, hereinafter will be described in detail with respect to the most preferred embodiment.

Through this preferred embodiment it is possible to better understand the objects, features and advantages of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the transmission of the drum type washing machine according to the present invention.

In addition, in drawing used for description, about the component same as FIG. 1, the same code | symbol is attached | subjected, and the overlapping description may be abbreviate | omitted.

In addition, in the following, an example applied to a washing pulley and a motor pulley of a drum type washing machine is considered to help understand the description.

2 is a configuration of the motor pulley of the drum type washing machine according to the present invention, Figure 3 is a block diagram of the laundry pulley of the drum type washing machine according to the present invention.

The motor pulley 101 of the drum type washing machine according to the present embodiment is spaced apart from the first fixture 102 and the first fixture 102 fixed to the shaft 6a of the motor 6 as shown in FIG. 2. The first spring 104, which is interposed between the first movable body 103 and the first stationary body 102 and the first movable body 103, pushes the first movable body 103 outward. A spacer 105 connected to the first fixing body 102 and positioned outside the first movable body 103 so as to limit the opening position of the elastic member and the first movable body 103 by the first spring 104. ), The mass (106) floating by the centrifugal force when the motor (6) rotates, and the first movable member (103) while rotating one side of the spacer (105) in an axis in conjunction with the rise of the scalpel (106). ), One end of which is connected to the scalpel 106, the middle of which is rotatably mounted on one side of the spacer 105, and the other end of which is in contact with the first movable body 103. 07).

Here, the first stationary body 102 and the first movable body 103 may be angled outwardly from both end portions to an arbitrary position so that the belt 108 may slide in accordance with the movement of the first movable body 102. Inclination is preferred.

On the other hand, in order to keep the tension of the belt 108 changed as the effective radius of the motor pulley 101 varies, the effective radius of the washing pulley 109 also corresponds to the change in the effective radius of the motor pulley 101. It must change.

To this end, the washing pulley 109 has a second fixed body 110 fixed to the drive shaft 5a of the inner tub 5 as shown in FIG. 3, and a second movable body spaced apart from the second fixed body 110 by a predetermined distance ( When the first movable body 102 is pushed outward, the second spring 112 positioned outside the second movable body 111 in order to push the second movable body 111 inward in conjunction with the second movable body 111 is pushed outward. It is composed of an elastic member, such as a) and a spring supporter 113 connected to the second fixing body 110 to support the second spring (112).

Here, the second fixing body 110 and the second movable body 111 also have a predetermined angle outwardly from both end portions to an arbitrary position so that the belt 108 can slide and move according to the movement of the second movable body 111. Inclination is preferred.

In addition, the belt 108 is in good contact with the inclined surfaces of the first fixing body 102 and the first movable body 103, the second fixing body 110 and the second movable body 111, and slides satisfactorily. It is desirable to configure the trapezoidal shape so that it can be made.

Drum-type washing machine according to the present invention made as described above operates as follows.

First, when power is applied, the motor 6 rotates, and the rotational force of the motor 6 is transmitted in the order of the motor pulley 101 → belt 108 → washing pulley 109 → inner tank 5. By rotating the washing or dehydration is performed.

The inner tank 5 requires a rotational speed of about 50 rpm when washing and about 600 to 1000 rpm when dewatering. For this purpose, the motor 6 of the conventional structure is rotated about 600 rpm when washing and about 7200 to 12000 rpm when dehydrating. .

The present invention is intended to narrow the rotation variable speed range of the motor (6), in the case of the motor pulley (101) during washing, as the rotational force of the motor (6) is weak, the centrifugal force is smaller than the elastic force of the first spring (104). Since the flotation force of the scalpel 106 is weak, the first movable body 103 is pushed outward by the elastic force of the first spring 104.

At this time, the space between the first fixing body 102 and the first movable body 103 is as wide as possible, so that the effective radius of the belt 108 against the motor pulley 101 is reduced.

Similarly, in the case of the washing pulley 109, the centrifugal force is smaller than the elastic force of the second spring 112 as the rotational force of the motor 6 is weak, so that the second movable body 111 is applied to the elastic force of the second spring 112. It becomes a shape pushed inward.

At this time, the gap between the second fixing body 110 and the second movable body 111 becomes narrow so that the effective radius of the belt 108 against the washing pulley 109 becomes large.

Accordingly, when washing, the ratio of the washing pulley 109 and the motor pulley 101 becomes larger, so that the motor 6 must rotate faster than the conventional structure.

On the other hand, in the case of the motor pulley 101 during dehydration, as the rotational force of the motor 6 is large, the centrifugal force becomes larger than the elastic force of the first spring 104, so that the scalpel 106 rises and is connected to the scalpel 106. The support 107 pushes the first movable body 103 inward while rotating the one side of the spacer 105 in the axial direction.

At this time, the gap between the first fixing body 102 and the first movable body 103 becomes narrow so that the effective radius of the belt 108 against the motor pulley 101 becomes large.

Similarly, in the case of the washing pulley 109, the centrifugal force is greater than the elastic force of the second spring 112 as the rotational force of the motor 6 is large, so that the second movable body 111 is pushed outward.

At this time, the gap between the second fixing body 110 and the second movable body 111 becomes as wide as possible, so that the effective radius of the belt 108 against the washing pulley 109 is reduced.

As a result, the ratio of the washing pulley 109 and the motor pulley 101 becomes smaller during dehydration, so that the motor 6 may rotate more slowly than the conventional structure.

Here, the tension of the belt 108 should always be kept constant by the interlocking of the movable bodies 103 and 111 so as to smoothly transmit the driving force of the motor 6 to the inner tank 5, and each spring 104 ( It is obvious that the relationship between the elastic force of 112 and the centrifugal force by the rotation of the motor 6 should be set to operate organically.

On the other hand, as a comparative example, unlike the conventional technology, that is, the ratio of the washing pulley and the motor pulley is fixed so that the motor has a wide range of variable speed ranges according to the washing mode or the dehydration mode, the present invention is in accordance with the washing mode or the dehydration mode. It can be seen that the ratio of the washing pulley and the motor pulley can be varied, so that the variable speed range of the motor is significantly narrowed.

As a result, according to the present invention, the motor can be operated in a range in which the efficiency of the motor is good, thereby improving the efficiency and extending the life of the motor, and reducing the power consumption by reducing the input of the motor. There is an advantage.

In addition, although specific embodiments of the present invention have been described and illustrated above, it is obvious that the present invention may be variously modified and implemented by those skilled in the art.

Such modified embodiments should not be individually understood from the technical spirit or the prospect of the present invention, and such modified embodiments shall fall within the appended utility model registration claims of the present invention.

Obviously, from the above description, the present invention can narrow the operating variable speed range of the motor because the ratio of the washing pulley and the motor pulley is varied according to the rotational speed of the motor, so that the motor can be operated in a range in which the efficiency of the motor is good. Therefore, the efficiency can be improved and the life of the motor can be extended, and the input of the motor is reduced, thereby reducing the power consumption.

Claims (3)

In a drum type washing machine including an inner tub for washing and dewatering, a motor providing a driving force to the inner tub, a motor pulley connected to the shaft of the motor, a washing pulley connected to the driving shaft of the inner tub, and a belt connecting the washing pulley and the motor pulley. In: The motor pulley, (1) a first fixture fixed to the shaft of the motor; (2) a first movable body spaced apart from the first fixed body by a predetermined distance; (3) at least one first elastic member interposed between the first fixed body and the first movable body to provide a fixed repulsive force in the outward direction to the first movable body; And (4) at least one mass that provides a variable repulsive force in the inward direction to the first movable body in accordance with the rotational centrifugal force of the motor; The laundry is loosened, (1) a second fixture fixed to the drive shaft of the inner tank; (2) a second movable body spaced apart from the second fixed body by a predetermined distance and moving in a direction opposite to the movement direction of the first movable body; And And (3) at least one second elastic member positioned outside the second movable body to provide a fixed repulsive force in the inward direction to the second movable body. The method of claim 1, The mass is (1) a sphere having a predetermined mass; And (2) a transmission device of a drum type washing machine, one end of which is connected to the sphere and the other end of which is in contact with the first movable body and includes a support for mediating the force of the sphere according to the rotational centrifugal force of the motor to the first movable body. . The method of claim 1, The first fixing body and the first movable body, the second fixing body and the second movable body are inclined outwardly from both ends to an arbitrary position; The belt of the drum type washing machine, characterized in that the belt is formed in a trapezoidal shape in cross section so as to be in sliding contact with the inclined surfaces of the first fixing body and the first movable body, the second fixing body and the second movable body. Gearbox.