KR19990076492A - washer - Google Patents

Abstract

The present invention relates to a washing machine, to switch to washing and dehydration mode, and to switching to and out of the washing and dehydration mode without using a clutch that serves to stop the rotation of the inner tank as needed during dehydration. The rotation stop of the inner tank is made smoothly so that the overall structure is simplified and the productivity is improved and the production cost is also reduced.

To this end, the present invention is fixed to the outer bottom surface center of the washing machine outer tub 104 is a dehydration motor 109 for generating a driving force in one direction when dewatering, and fixed to one side of the outer bottom surface of the outer tub 104 when washing , The washing motor 110 repeatedly generates a driving force in the reverse direction, the washing motor pulley 111 that is axially coupled to the washing motor and rotates under the driving force of the washing motor 110, and dehydrates the dewatering motor 109. It is rotatably installed under the driving force of the motor, and the upper end is fixed to the inner tank 106, and the lower end is exposed to the lower part of the dehydration motor 109, and the upper end is penetrated through the dehydration shaft to the pulsator 108. The laundry shaft 113 is fixed and the lower end is exposed to the lower portion of the dehydration shaft 112, and the laundry shaft pulley 115 is fixed to the lower end of the laundry shaft and connected to the washing motor pulley 111 as a belt 114 will be.

Description

washer

The present invention relates to a washing machine, and more specifically, it is possible to switch to washing and dehydration mode without using a clutch that plays a role of switching to washing and dehydration mode, and when necessary, in the case of dehydration. It is to stop the rotation of.

In general, a washing machine is a device for automatically washing laundry, and washing is completed by successively washing administration → rinsing administration → dehydration administration according to the control signal of the controller.

In the conventional washing machine, the top cover 3 having the door 2 is coupled to the upper part of the main body 1 as shown in FIG. 1, and the outer tank 4 has a plurality of dampers 5 in the main body 1. It is supported by, the inner tank 6 is rotatably installed inside the outer tank 4, the inner upper end of the inner tank has a hollow balancer (7) in the form of a ring to be filled with salt water inside A pulsator 8 is rotatably installed on the inner bottom of the inner tub 6, and a motor 9 for generating a driving force is fixed to one side of the outer bottom of the tub 4. The motor pulley 10 is axially coupled to the motor so as to rotate in response to the driving force generated by the motor 9, and as the motor pulley 10 and the belt 11 at the center of the outer bottom surface of the outer tub 4. The clutch 13 to which the clutch pulley 12 is axially coupled in a connected state is fixed Was, the clutch has a top of the washing shaft 15 is installed to the top of the fixed and the pulsator 8, the installed condition as inner tank 6 and the de-contraction (14) fixed.

In addition, the top cover 3 coupled to the upper part of the main body 1 is provided with a water supply valve 16 for water supply, and a drain hose having a drain valve 17 for drainage at the lower end of the outer tank 1 ( 18) is connected.

In the above configuration, the clutch 13 serves to perform three functions. First, the dehydration shaft 14 and the washing shaft 15 are separated and combined, that is, only the pulsator 8 is rotated during washing. In order to separate the dehydration shaft 14 and the washing shaft 15 so that the dehydration shaft 14 and the washing shaft 15 to rotate at the same time to rotate the pulsator (8) and the inner tank (6) Second, to reduce the rotational force so that the pulsator (8) is rotated at a suitable rotational speed for washing, that is, the rotational speed 1800rpm according to the conventional motor (9) drive the motor pulley (10) and clutch pulley The deceleration device using the gear ratio inside the clutch 13 is omitted because the primary deceleration is performed at about 900 rpm due to the ratio of (12), but the speed is too high to rotate the pulsator 8 at this speed for washing. ) By the reduction device 900rpm 100 ~ 250rpm Secondary deceleration is a function to rotate the pulsator (8) at a second reduced speed to enable proper washing, and thirdly, by forcibly stopping the inner tank (6) that rotates at high speed when dewatering, When the door 2 installed in the top cover 3 is open in any case, it is a brake function to quickly stop the inner tank 6 that is rotating at high speed for the safety of the user.

Therefore, the user puts the laundry to be washed into the inner tank 6 in the state in which the door 2 installed in the top cover 3 is opened, closes the door 2, and then the control unit of the top cover 3 ( If the automatic washing mode provided in 19) is selected, washing, rinsing, and dehydrating are continuously performed within a predetermined time.

That is, when the automatic washing mode is selected, the water supply valve 16 installed in the top cover 3 opens, so that the water to be used for washing is supplied to the inner tank 6, and the water to be used for washing is filled in the inner tank 6. After the water level is filled to a certain level, the water supply valve 16 is closed and no further water is supplied. At the same time, the motor 9 fixed to one side of the outer bottom surface of the outer tub 4 receives the control signal of the control unit 19. It receives 1800rpm rotation speed and drives it continuously in forward and reverse direction.

In this way, when the motor 9 is driven in the forward and reverse directions, the motor pulley 10 axially coupled to the motor rotates, and the clutch pulley 12 axially coupled to the motor pulley and the clutch 13 is belt 11. As a result, the driving force of the motor 9 is transmitted to the clutch 13.

When the driving force of the motor 9 is transmitted to the clutch 13, the diameter ratio of the motor pulley 10 axially coupled to the motor 9 and the clutch pulley 12 axially coupled to the clutch 13 is 1: Considering that it is 2, it is understood that the rotation ratio according to the driving force of the motor 9 is reduced to 900 rpm, which is about the first half, in the process of being transmitted to the clutch 13.

On the other hand, when the driving force of the motor 9 is transmitted to the clutch 13, the clutch secondly decelerates the received driving force, and the clutch 13 is detached from the clutch 13 already installed at the start of the washing stroke. Since the contraction 14 and the washing shaft 15 are separated, the driving force, which is secondarily decelerated and transmitted to the clutch 13, is transmitted only to the pulsator 8 in the inner tank 6 through the washing shaft 15. Accordingly, the pulsator rotates the laundry in the inner tank 6 while repeating the forward and reverse rotations, and generates water flow. Thus, the laundry is washed by the rotational force of the pulsator 8, the frictional force between the inner tank 6, and the resolution of the detergent. do.

When the washing operation is completed by the above action, since the drain valve 17 installed in the drain hose 18 is opened under the control signal of the control unit 19, the water used for washing is externally discharged through the drain hose 18. To be drained.

In addition, the rinsing stroke is performed after the washing stroke, and the rinsing stroke is performed by the same action as the washing stroke, and thus a detailed description of the operation will be omitted. Hereinafter, only the dehydration stroke will be described below.

At the time of dehydration, the drain valve 17 installed in the drain hose 18 opens and the motor 9 is driven in one direction. The driving force of the motor is the motor pulley 10 and the clutch (axially coupled to the motor 9). It is transmitted to the clutch 13 while being primarily decelerated by the ratio of the diameter of the clutch pulley 12 axially coupled to 13, and the clutch does not secondaryly decelerate the driving force of the received motor when a rinsing signal is given.

When the driving force of the motor 9 is transmitted to the clutch 13 as described above, the clutch is in a state in which the dehydration shaft 14 and the washing shaft 15, which are already installed in the clutch 13 at the stage of dehydration stroke, are coupled. Therefore, the driving force transmitted to the clutch 13 by being primarily decelerated is continuously transmitted to the inner tub 6 in the outer tub 4 through the dehydration shaft 14 and simultaneously in the inner tub 6 through the washing shaft 15. The pulsator 8 is transmitted to the pulsator 8, and accordingly, the pulsator and the inner tank 6 are rotated at high speed in one direction, so that the water contained in the laundry is drained by the centrifugal force.

On the other hand, when the washing stroke, the rinsing stroke, and the dehydration stroke are performed as described above, the inner tank vibrates by the operation of the motor 9, the action of the clutch 13, and the rotation of the inner tank 6, Vibration force is transmitted to a substantial portion of the outer tank (4), the vibration of the inner tank (6) is understood that the upper portion is reduced by the balancer (7) is formed in the inner upper end of the inner tank filled with salt water.

Vibration of the inner tub (6) is particularly intensified as the laundry is twisted to one side by the high-speed rotation of the inner tub (6) when the laundry is twisted during the dehydration stroke, so that the vibration force transmitted from the inner tub to the outer tub (4) The vibration transmitted to the outer tank is mostly absorbed by each damper 5 supporting the outer tank 4 inside the main body 1, and as the outer tank 4 vibrates, the main body 1 is actually vibrated. There is no contact with).

However, such a conventional washing machine reduces the driving force delivered to the pulsator during washing, separates and combines the washing shaft and dewatering shaft according to washing and dehydration, and forcibly stops the inner tank rotating at high speed when the door is opened during dehydration. Since the clutch is necessarily required for the cycle, the structure of the clutch is very precise and complicated, so that the peripheral structure is also complicated, which leads to a decrease in productivity and a high price of the clutch, thereby significantly increasing the manufacturing cost.

The present invention has been made in order to solve the above-mentioned conventional problems, the washing and dehydration mode switching and without the use of the clutch to stop the rotation of the inner tank as needed during the dehydration without washing and The purpose is to reduce the production cost as well as to improve the productivity by simplifying the overall structure by switching to the dehydration mode and smooth rotation stop of the inner tank as needed.

According to the present invention for achieving the above object, the dehydration motor is fixed to the center of the outer bottom surface of the washing machine outer tank to generate a driving force in one direction when dewatering, and fixed to one side of the outer bottom surface of the outer tank in the forward, reverse direction Washing motor repeatedly generating a driving force, the washing motor pulley is axially coupled to the washing motor and rotated under the driving force of the washing motor, and is rotatably installed to receive the driving force of the dehydrating motor on the dehydrating motor. A dehydration shaft that is fixed and has a lower end exposed to the lower part of the dehydration motor, a washing shaft whose upper end is fixed to the pulsator through the dehydration shaft and whose lower end is exposed to the lower part of the dehydration shaft, and which is fixed to the lower end of the washing shaft, as a belt There is provided a washing machine including a laundry shaft pulley connected thereto.

1 is a longitudinal sectional view showing a conventional washing machine

Figure 2 is a longitudinal cross-sectional view showing a washing machine of the present invention

Figure 3 is an enlarged longitudinal sectional view showing the main configuration of the washing machine

Explanation of symbols for main parts of the drawings

101. Main Unit 103. Top Cover

104. Outer House 106. Inner House

108. Pulsator 109. Dewatering Motor

110. Washing motor 111. Washing motor pulley

112. Dehydration 113. Laundry Shaft

114. Belt 115. Laundry Pulley

116. Water supply valve 117. Drain valve

118. Drain hose 119. One-way rotating bearing

120. Brake Drums 121. Brake Bands

Hereinafter, with reference to the accompanying Figures 2 to 3 showing the present invention as an embodiment in more detail as follows.

2 is a longitudinal sectional view showing the washing machine of the present invention, Figure 3 is a longitudinal sectional view showing an enlarged main configuration of the washing machine of the present invention, the present invention is a top cover having a door 102 to the top of the main body 101 ( 103 is coupled, the outer tub 104 is supported as a plurality of dampers 105 in the main body 101, the inner tub 106 is rotatably installed in the outer tub 104, The inner upper end of the inner tank is integrated with a hollow balancer 107 in the form of a ring to be filled with salt water therein, a pulsator 108 is rotatably installed on the inner bottom surface of the inner tank 106 have.

The dehydration motor 109 is fixed to the center of the outer bottom surface of the outer tub 104 to generate a driving force in one direction when dewatering, and the driving force is generated in the forward and reverse directions when washing the outer bottom surface of the outer tub 104. The washing motor 110 is fixed to the washing motor, and the washing motor pulley 111 is axially coupled to the washing motor to rotate under the driving force of the washing motor 110, and the driving force of the dehydrating motor is attached to the dehydrating motor 109. The upper end is fixed to the inner tank 106 to receive and rotates, and the dehydration shaft 112 is installed with the lower end exposed to the lower side of the dehydration motor 109. The dehydration shaft penetrates the dehydration shaft 112 and the upper end is pulsed. The washing shaft 113 is rotatably installed in a state in which the lower end portion is exposed to the lower portion of the dehydration shaft 112, and the lower portion of the washing shaft is rotatably installed. The lower end of the washing shaft has a washing motor pulley 111 as a belt 114. Connected to the laundry shaft pulley ( 115) is fixed.

In addition, the top cover 103 coupled to the upper portion of the main body 101 is provided with a water supply valve 116 for water supply, the lower end of the outer tub 104, the drain hose is provided with a drain valve 117 for drainage ( 118 is connected.

In addition, a one-way rotation bearing 119 is installed below the dehydration motor 109 such that the dehydration shaft 112 does not rotate in a direction opposite to the driving direction of the dehydration motor 109. At the lower end of the drain valve 117 is opened so that the dehydration shaft 112 is rotated in the driving direction of the dehydration motor 109, when the drain valve 117 is closed, the dehydration shaft 112 is the dehydration motor 109 Brake means for preventing the rotation in the driving direction of the) is provided.

The brake means is fixed to the lower end of the dehydration shaft 112, the brake drum 120 to rotate together with the rotation of the dehydration shaft, and installed in conjunction with the drain valve 117 while wrapping the brake drum, the drain valve When the brake drum 120 is released and the drain valve 117 is closed, it is composed of a brake band 121 for holding the brake drum 120.

In the present invention configured as described above, when water supply is completed by a predetermined level into the inner tank 106 during washing, the washing motor 109 fixed to one side of the outer bottom surface of the outer tub 104 is connected to the control signal of the control unit 122. Accordingly, since the motor is repeatedly driven in the forward and reverse directions, the washing motor pulley 111 axially coupled to the washing motor 109 rotates in the forward and reverse directions, and the washing motor pulley is fixed to the lower end of the washing shaft 113. Since it is connected to the 115 and the belt 114, the washing shaft 113 is rotated forward and reverse.

When the washing shaft 113 is rotated forward and reverse as described above, the upper end of the washing shaft 113 is fixed to the pulsator 108 rotatably installed in the inner tank 106, and the pulsator is also fixed together with the washing shaft 113. And, the reverse rotation, and thus the laundry in the inner tank 106 and the water flow is generated at the same time the laundry is washed.

The driving force of the washing motor 110 when the laundry is washed by the above-described action is that the driving force is pulsed in a state in which the driving force is first reduced by the gear ratio (1: 2) of the washing motor pulley 111 and the washing shaft pulley 115. Even if the eater 108 receives and rotates, the laundry 108 may be so large that it does not interfere with washing.

On the other hand, when the pulsator 108 is rotated in the forward and reverse directions during washing, the inner tank 106 is also intended to rotate in the forward and reverse directions together with the rotational force, but the one-way rotary bearing 119 installed at the lower end of the dehydration motor 109. As the dehydration shaft 112 is prevented from rotating in the direction opposite to the driving direction of the dehydration motor 109, the inner tank 106 is not actually rotated in the reverse direction, as well as drainage during the washing. Since the drain valve 117 installed in the drain hose 118 is always closed for prevention, the brake means provided at the lower end of the dehydration shaft 112 is closed by the drain valve 117 so that the dehydration shaft 112 is dewatered. Since the inner tank 106 is not actually rotated in the forward direction as it is held so as not to rotate in the driving direction of the 109, the inner and outer rotational force of the pulsator 108 may be reduced. Indirect In the case of receiving the rotation, the stirring action by the rotation of the pulsator 108 is weakened by the rotation of the inner tank 106, so that the washing performance is deteriorated, so that the inner tank 106 may not be rotated. Do.

In addition, during dehydration, the dehydration motor 109 fixed to the center of the outer bottom surface of the outer tub 104 is driven in one direction. During the dehydration, a drain valve installed in the drain hose 118 to drain the dewatered water is provided. Since 117 is open, the brake means provided at the lower end of the dehydration shaft 112 releases the dehydration shaft 112 without holding the dehydration shaft 112. 112 rotates in one direction at a rotational speed proportional to the driving force of the dewatering motor 109.

In this way, when the dehydration shaft 112 rotates in one direction, the upper end of the dehydration shaft is fixed to the inner tank 106 rotatably installed in the outer tank 104, so that the inner tank also rotates together with the dehydration shaft 112, Accordingly, the laundry in the inner tank 106, which has been washed by the washing stroke, is pushed toward the inner circumference of the inner tank by centrifugal force, so that the water contained in the laundry is drained out.

When the laundry is dehydrated by the above-described action, the driving force of the dehydration motor 109 may be such that moisture contained in the laundry can be released by centrifugal force, and the rotational force of the dewatering motor 109 is dehydrated as it is without deceleration ( Since it is transmitted to the inner tank 106 through 112, the driving force of the dewatering motor 109 is to be the rotational force of the inner tank 106.

On the other hand, when dewatering, the rotational force of the inner tank 106 is indirectly transmitted to the pulsator 108 through the laundry, so that the pulsator 108 also rotates, if only the inner tank 106 is rotated and the pulsator 108 rotates. If not, since the inner tank 106 is rotating at a high speed, the laundry may be damaged while interfering with the non-rotating pulsator 108 so that the pulsator 108 may be rotated even indirectly during dehydration. It should be understood that it should.

As described above, when the inner tank 106 is dehydrated while being rotated at a high speed in the driving direction of the dehydration motor 109, when the user inadvertently opens the door 102 installed on the top cover 103, safety is ensured. In order to stop the rotation of the inner tank 106 immediately, if the door 102 is opened during the dehydration, the dehydration motor 109 is stopped and at the same time the drain valve 117 installed on the drain hose 118 is the control unit Closed by receiving the control signal of (122), the brake means provided at the lower end of the dehydration shaft 112 to catch the dehydration shaft 112 by the closing of the drain valve 117, so that the dehydration shaft is the dehydration motor 109 The inner tub 106 is quickly stopped as it is not rotated in the driving direction of.

The brake means to hold the dehydration shaft 112 when the door 102 installed in the top cover 103 is opened, when the dehydration shaft is not held, the dehydration motor 109 is opened at the same time as the door 102 is opened. Even if it is stopped because the inner tank 106 is rotated by a certain number of revolutions by the inertia and then stops because the safety accident occurs.

Then, the brake means provided at the lower end of the dehydration shaft 112 releases the dehydration shaft when the drain valve 117 installed in the drain hose 118 is released, and the brake is closed when the drain valve 117 is closed. The process of holding the deshrink 112 by the means will be described in more detail as follows.

When the drain valve 117 is open, the brake band 121 constituting the brake means releases the brake drum 120 constituting the brake means together with the brake band. Even though it is fixed to the lower end, the dehydration shaft 112 is released, and the inner tank 106 can be rotated. On the contrary, in the state where the drain valve 117 is closed, the brake band 121 constituting the brake means is formed. Since the brake drum 120, which constitutes the brake means together with the brake band, is caught, the brake drum is fixed to the lower end of the dehydration shaft 112, so that the dehydration shaft is finally caught. It becomes impossible.

Actions not described in the present invention below are considered to be understandable with reference to the conventional actions described above.

Therefore, the present invention enables the switching of the washing and dehydration mode as well as the brake function according to the opening of the door when dehydration is possible without using a separate clutch that performs a combination of the clutch function, the deceleration function and the brake function. It is simple and the productivity is improved and the manufacturing cost is also greatly reduced.

Claims (4)

A dewatering motor fixed to the center of the outer bottom surface of the outer tub of the washing machine and generating a driving force in one direction when dewatering; A washing motor which is fixed to one side of the outer bottom surface of the outer tub and generates a driving force repeatedly in the forward and reverse directions when washing; A washing motor pulley which is axially coupled to the washing motor and rotates under the driving force of the washing motor; The dehydration shaft is rotatably installed by receiving the driving force of the dehydration motor to the dehydration motor, the upper end is fixed to the inner tank and the lower end is exposed to the lower dehydration motor, A washing shaft through which the upper end is fixed to the pulsator and the lower end is exposed to the lower side of the dehydrating shaft, passing through the dehydrating shaft; And a laundry shaft pulley fixed to a lower end of the laundry shaft and connected to the laundry motor pulley as a belt. The method of claim 1, Washing machine, characterized in that the one-way rotation bearing is installed in the lower portion of the dewatering motor so that the dehydration shaft is not rotated in a direction opposite to the driving direction of the dewatering motor by the one-way rotation bearing. The method of claim 1, And a brake means for releasing the dehydration shaft when the drain valve is opened at the lower end of the dehydration shaft and holding the dehydration shaft when the drain valve is closed. The method of claim 3, wherein The brake means is fixed to the lower end of the dehydration shaft and the brake drum to rotate together with the rotation of the dehydration shaft, Washing machine, characterized in that the brake drum is installed so as to be interlocked with the drain valve to release the brake drum when the drain valve is opened, and the brake band to hold the brake drum when the drain valve is closed.