KR100408787B1 - Clutching method for washing machine - Google Patents

Abstract

The clutch driving method of the washing machine according to the present invention includes a drive motor that rotates by receiving power during washing, a washing shaft that is always fastened to a rotor in the driving motor, and one end of which is connected to a pulsator, and the washing shaft. And a hollow shaft-type dehydration shaft, one end of which is connected to the inner tank, and the outer shaft is circumscribed to the dehydration shaft, and vertical movement is possible along the dehydration shaft, and a serration is formed on the inner side in contact with the dehydration shaft. A washing machine comprising: a connector for coupling; a spring for pushing the connector into engagement with teeth formed on an upper surface of the rotor in the drive motor; and a solenoid for detaching the connector from the rotor by supply of power. To the solenoid to engage the connector engaged with the rotor teeth. In order to minimize friction between the connector and the deshrinkion and to smoothly wash, the forward / reverse rotation shaking caused when the rotor is rotated at a slower speed than the rotational speed during washing and then the rotor is suddenly braked By minimizing the frictional force between the connector and the deshrinkage, the solenoid is operated to release the connector from the rotor, and then rotates at a slower speed than the rotational speed when washing so that the connector is smooth on the bottom tooth of the solenoid. A preliminary washing step for preventing the rotation of the dewatering shaft during rotation of the washing shaft by being engaged; A washing step in which washing is performed by rotating the washing shaft rotatable in the washing preliminary step; After the washing step is finished, the solenoid is turned off in order to move to the dehydration step, and the connector engaged with the solenoid bottom tooth by the elasticity of the spring is brought into close contact with the rotor of the driving motor. A dewatering preliminary step of rotating the connector at low speed to engage the teeth formed on the upper surface of the rotor; It is characterized in that it comprises a dehydration step of dehydration is made by rotating the laundry shaft and the dehydration shaft is enabled to rotate in the dehydration preliminary step.

Clutch driving method of the washing machine according to the present invention having such a feature is a low-speed rotation of friction with the de-shrinkage generated during the vertical movement of the connector to determine the rotation of the de-shrinkage outside the de-shrinkage is connected to the inner tank of the washing machine Minimize by using the after-braking method to reduce the unnecessary power consumption of the solenoid due to the friction, so that the connector is reliably fastened to the teeth formed on the bottom of the solenoid or the top of the rotor after moving up and down. By rotating the rotor at a low speed for a predetermined time, it is possible to prevent the impact and noise caused by the high-speed rotation in the state that the teeth are displaced, furthermore the phenomenon that the connector close to the bottom of the solenoid is separated by the impact There is an advantage that can be prevented.

Description

Clutching method for washing machine

The present invention relates to a dehydration in a washing machine in which a driving motor and a washing tank are connected in series, and a clutch driving method of the washing machine. More specifically, the present invention relates to a washing shaft connecting a pulsator with a driving motor to rotate only a pulsator during washing. The dehydration shaft that rotates only and connects the inner tank can reduce the dehydration and friction of the connector during the operation of the solenoid used to fix it.When dehydration and washing, the connector is formed on the tooth formed at the top of the rotor or the bottom of the solenoid, respectively. It relates to a clutch driving method of the washing machine that can be smoothly engaged.

There are three types of washing machines used in the world today: drum type used mainly in Europe, agitator type in the Americas, and pulsator type used in East Asia such as Korea and Japan. It is largely classified.

In the double drum type, water, detergent and laundry are put inside the drum in which several protrusions are formed, and the machine rotates at a low speed on the horizontal axis so that the laundry is lifted up by the protrusions. This method has almost no damage to laundry and has the advantage of using less water. However, since the washing power is weak, the water must be heated by using an electric heater, which causes a lot of electricity consumption, takes a long time, and has a big noise.

Stirring is a method of washing by rotating the wing-shaped stirrer to the left and right in the center of the washing tank. The washing power is excellent, but the noise and vibration of the washing machine are large, there is damage to the laundry, and it is suitable for large washing machines.

The vortex type, which is widely used in Korea, was developed in Japan in 1960 and washes with water generated by rotating a disk-shaped pulsator. The early products had the disadvantage of severe twisting and damage of clothes due to the small diameter of the pulsator and the high-speed rotation.However, after the 80s, when the pulsator was enlarged and the left and right reversal time was reduced, these products have been compensated for and have excellent washing power. In particular, large pulsator products with short left and right reversal times may be classified as agitated due to their characteristics.

In the washing process, the vortex washing machine rotates only the pulsator in the washing process, and during dehydration, the pulsator and the inner tank rotate together to dehydrate the spinner. The rotor and the rotor and the pulsator rotate in a driving motor. The clutch shaft comprises a washing shaft connecting the rotor, a dehydration shaft connecting the rotor and the inner tub, and a connector determining the connection of the dehydration shaft and the rotor.

In more detail, when the connector having a structure containing the dehydration shaft is engaged with the rotor while moving up and down, the dehydration shaft is also rotated, and the dehydration shaft is not rotated when the connector is spaced apart from the rotor. do. The vertical movement of the connector is performed by a solenoid acting as a spring and an electromagnet. When the solenoid is operated to detach the connector from the rotor, the elastic force of the spring as well as the frictional force with the deshrinkage are to be overcome. have. This problem is increasing the power consumption in the solenoid, and the problem of wear and tear of the connector and deshrinkage caused by friction.

In addition, the connector should be fastened to the teeth formed on the lower solenoid or the rotor, respectively, after the vertical movement, the current rotates at the same speed as washing and dehydration, and matched to the teeth meet the wear and noise generated There is also.

The present invention has been made to solve the above problems, and reduces the friction between the connector and the de-shrinkage connecting the de-shrink and the rotor, so that the solenoid can perform a function required even with a small power consumption, the connection It is an object of the present invention to provide a method of driving a clutch of a washing machine, in which a self is attached to a solenoid lower part or a rotor upper part and then rotated at a low speed for a predetermined time so as to be accurately fastened to a misaligned tooth.

1 is a clutch structure diagram of a washing machine to which a clutch driving method of a washing machine is applied according to an exemplary embodiment of the present invention.

2 is a flowchart illustrating a clutch driving method of a washing machine according to an embodiment of the present invention.

Figure 3a is a schematic diagram showing the clutch state in the dehydration preliminary step and the dehydration step and the power-off state of the clutch driving step of the washing machine according to an embodiment of the present invention.

Figure 3b is a schematic diagram showing the clutch state in the preliminary washing step and the washing step of the clutch driving step of the washing machine according to an embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

10 ... washing shaft 11 ... dehydration

11a..Inner bearing 12 ... Bearing housing

12a..External bearing 13 ... rotor

14 ... stator 15 ... Connector

16 ... Spring 17 ... Solenoids

In order to achieve the above object, a clutch driving method of a washing machine according to the present invention includes a driving motor that rotates by being supplied with power during washing, and is always fastened to a rotor in the driving motor and has one end connected to a pulsator. A shaft, a hollow shaft-type dehydration shaft, one end of which is connected to the inner tank, and the washing shaft is circumscribed to the dehydration shaft, and vertical movement is possible along the dehydration shaft, and a serration is formed on the inner side in contact with the dehydration shaft. And a connector for rotating the dehydration shaft during rotation, a spring for pushing the connector into engagement with teeth formed on the upper surface of the rotor in the drive motor, and a solenoid for disengaging the connector from the rotor by supply of power. A washing machine comprising: the teeth engaged with the teeth of the rotor for washing In order to minimize friction between the connector and the deshrinkment and to smoothly wash, the rotor is rotated at a lower speed than the rotational speed during washing to rapidly brake the rotor. Minimizes the frictional force between the rotor and the deshrinkment by using forward / reverse rotation, and simultaneously operates the solenoid to separate the connector from the rotor, and rotates at a lower speed than the rotational speed when washing the connection. A preliminary washing step for allowing the self to gently engage with the solenoid tooth of the solenoid to prevent rotation of the dehydration shaft during rotation of the washing shaft; A washing step in which washing is performed by rotating the washing shaft rotatable in the washing preliminary step; After the washing step is finished, the solenoid is turned off in order to move to the dehydration step, and the connector engaged with the solenoid bottom tooth by the elasticity of the spring is brought into close contact with the rotor of the driving motor. A dewatering preliminary step of rotating the connector at low speed to engage the teeth formed on the upper surface of the rotor; It is characterized in that it comprises a dehydration step of dehydration is made by rotating the laundry shaft and the dehydration shaft is enabled to rotate in the dehydration preliminary step.

The clutch driving method of the washing machine according to the present invention having the above characteristics spins the rotor at a low speed before the washing process and dehydrates the connector and the dehydration generated when the solenoid is operated by using the forward / reverse rotation caused by the rapid braking method. Since the friction of the shaft can be reduced, the power consumption of the solenoid can be reduced.

In addition, it provides a reliable operation by rotating at a low speed for a certain time after the movement of the connector so as to reliably fasten the connector to the teeth reliably coupled to the teeth formed on the bottom of the solenoid or the top of the rotor. There is also an advantage.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a clutch structure diagram of a washing machine to which a clutch driving method of a washing machine according to an embodiment of the present invention is applied.

Referring to Figure 1, the clutch of the washing machine to which the clutch driving method of the washing machine according to the present invention is applied, one end is connected to the pulsator and the other end is a washing shaft 10 is fastened to the rotor 13, the washing shaft A dehydration shaft 11 having a hollow shaft-type structure containing 10 and having an internal bearing 11a inserted therebetween so that the washing shaft 10 can be rotated separately, and the dehydration shaft A bearing housing 12 having a cylindrical structure containing 11 and having an outer bearing 12a inserted between the dehydrating shaft 11 so that the dehydrating shaft 11 is rotatable; Rotor 13 and stator 14 embedded in the housing 12, the connector 15 for determining the connection and separation of the rotor 13 and the dehydration shaft 11, and the connector 15 ) By the spring (16) pushing the rotor 13, the power supply Consists of the connector 15 by the elasticity of the backing spring group in a solenoid (17) to exit from said rotor (13).

Since the connector 15 is circumscribed to the dehydration shaft 11, the connector 15 can move upward and downward through the dehydration shaft 11, and a serration is formed on the joint surface with the dehydration shaft 11. At the time of rotation, the dehydration shaft 11 is also a member to rotate together. In addition, teeth are formed on the upper and lower portions of the connector 15 so that the rotor can be reliably fastened to the teeth formed on the upper portion of the rotor 13 and the solenoid 17 to rotate the dehydration shaft 11. Make sure you distinguish between and stops.

In the clutch structure of the washing machine, the power consumption during the clutch operation is reduced, and the method of allowing the teeth formed in the connector 15, the rotor 13, and the solenoid 17 to be reliably fastened with reference to the drawings. Explain.

2 is a flowchart illustrating a clutch driving method of a washing machine according to an embodiment of the present invention.

Referring to FIG. 2, the clutch driving method of the washing machine according to the present invention is the connector 15 generated when the connector 15 engaged with the teeth of the rotor 13 is separated using the solenoid 17 for washing. In order to minimize friction between the dehydration shaft 11 and smooth washing, the forward / reverse rotation shaking caused when the rotor 13 is rotated at a lower speed than the rotational speed during washing and then the rotor is suddenly braked By minimizing the frictional force between the rotor and the deshrinkable by using the same, the solenoid 17 is operated to separate the connector 15 from the rotor 13 and again rotate at a lower speed than the rotational speed during washing. A preliminary washing step (S 100) for preventing the rotation of the dehydration shaft (11) during rotation of the washing shaft (10) by allowing the connector (15) to smoothly engage the bottom teeth of the solenoid (17); A washing step (S 200) in which washing is performed by rotating the washing shaft (10) rotatable in the washing preliminary step (S 100); After the washing step (S 200) is finished, the solenoid (17) is turned off to move to the dehydration step, so that the connector (15) engaged with the bottom teeth of the solenoid (17) by the elasticity of the spring (16) to the drive motor. Dehydration preliminary step of engaging the connector (15) to the teeth formed on the rotor 13 by rotating the rotor (13) at a lower speed than the rotational speed during washing after being in close contact with the rotor (13) of the (S 300); It consists of a dehydration step (S 400) to spin the washing shaft 10 and the dehydration shaft 11 is made possible to rotate in the dehydration preliminary step (S 300) to spin.

In more detail, the washing preliminary step (S 100) is a first rotating step in which the laundry shaft 10 and the dewatering shaft 11 engaged with the rotor 13 rotate at a lower speed than the rotational speed during washing ( S 101); In order to reduce friction between the dehydration shaft 11 and the connector 15 generated when the solenoid 17 is operated, the washing shaft 10 that rotates at a lower speed than the rotation speed during washing in the first rotation step S 101. And a rapid braking step (S 102) for operating the solenoid (17) while simultaneously braking the dehydration shaft (11); A mode conversion step (S 103) of converting the solenoid (17) operated in the rapid braking step (S 102) into a maintenance state; The connector 15 which is detached from the rotor 13 by the solenoid 17 operated in the rapid braking step S 102 and adhered to the bottom of the solenoid 17 is formed on the bottom of the solenoid 17. It consists of a second rotating step (S 104) for rotating the rotor 13 at a lower speed than the rotational speed during washing so as to engage the teeth.

Here, the speed of the rotor 13 which rotates at low speed in the first rotation step S 101 and the second rotation step S 104 is preferably 20 to 40 rmp, and the low speed rotation time is 2 to 10 seconds. Preferably, the operating voltage of the solenoid 17 in the rapid braking step (S 102) is preferably between 90 and 150 V, and the holding of the solenoid 17 in all the conversion steps (S 103). The voltage is preferably between 20 and 50 volts lower than the rapid braking step S 102 to reduce power consumption.

On the other hand, the washing step (S 200) is the dehydration shaft 11 is fastened to the teeth formed on the bottom of the solenoid 17 is impossible to rotate, only the washing shaft 10 is rotatable actually This is the step of washing.

In addition, the dehydration preliminary step (S 300) is to stop the operation of the solenoid 17 so that the connector 15 is pushed by the spring (16) in close contact with the rotor 13 (S 301) Wow; Third rotation step (S) for rotating the rotor 13 at a lower speed than the rotation speed when washing so that the connector 15 and the teeth of the rotor 13 in contact with the solenoid off step (S 301) is engaged 302, wherein the voltage applied to the solenoid 17 in the solenoid off step (S 301) is gradually brought to a voltage of 0V so that between the connector 15 and the rotor 13 due to a sudden off It is desirable to prevent the impact.

Further, the low speed rotation speed in the third rotation step is preferably 20 to 40 rpm, and the low speed rotation time in the third rotation step is preferably 2 to 10 seconds.

Figure 3a is a schematic diagram showing the clutch state in the dehydration preliminary step and the dehydration step and the power-off state of the clutch driving step of the washing machine according to an embodiment of the present invention, Figure 3b is a washing machine according to a preferred embodiment of the present invention A schematic diagram showing the clutch state in the washing preliminary step and the washing step of the clutch driving step of FIG.

Referring to FIG. 3A, in the dehydration preliminary step S 300 and the dehydration step S 400, the solenoid 17 is turned off to simultaneously rotate the washing shaft 10 and the dehydration shaft 11 for dehydration. To the teeth formed on the upper surface of the rotor 13 by the low-speed rotation of the rotor 13 for a predetermined time after the connector 15 is pushed down to the rotor 13 by the (16) It can be seen that it is correctly fastened. It also operates as described above even when the power is off.

Referring to FIG. 3B, in the washing preparatory step S 100 and the washing step S 200, the dehydration shaft 11 is fixed for washing, and the solenoid 17 is rotated so that only the washing shaft 10 may be rotated. Move to form the connector 15 on the bottom surface of the solenoid 17 by being in close contact with the solenoid 17 against the elasticity of the spring 16 and then by the low speed rotation of the rotor 13 for a predetermined time. It can be seen that it is correctly fastened to the teeth.

On the other hand, the present invention is not limited to the above embodiments, and many variations are possible by those skilled in the art within the spirit of the present invention.

As described above, the clutch driving method of the washing machine according to the present invention has a low-speed friction with the dehydration shaft that occurs when the connector moves up and down to determine whether the dehydration shaft is rotated by contacting the dehydration shaft that is connected to the inner tank of the washing machine. Minimization by using a rapid braking method after rotation has the effect of reducing unnecessary power consumption of the solenoid due to the friction, and the connector is reliably fastened to the teeth formed on the bottom of the solenoid or the top of the rotor after moving up and down By rotating the rotor at a low speed for a predetermined time, it is possible to prevent the impact and noise caused by the high-speed rotation in the state that the teeth are displaced, and furthermore the phenomenon that the connector close to the bottom of the solenoid by the impact is separated There is also an advantage that can be prevented.

Claims (3)

Drive motor that rotates by being supplied with power when washing, and a washing shaft that is always fastened to the rotor in the drive motor, one end of which is connected to a pulsator, and a hollow shaft type, which includes the laundry shaft and one end of which is connected to the inner tank. And a connector that rotates the dehydration shaft during rotation when the deshrinkment of the rotor is circumscribed to the deshrinkment shaft, and vertical movement is possible along the deshrinkment shaft. In the washing machine comprising a spring for engaging the teeth formed on the upper side of the rotor in the inner rotor, and a solenoid for separating the connector from the rotor by the supply of power, In order to minimize the friction between the connector and the de-shrinkage generated when the connector is engaged with the teeth of the rotor for the washing by using the solenoid and to wash smoothly, the rotor is slower than the rotation speed when washing By minimizing the frictional force between the rotor and the deshrink by using forward / reverse rotation shaking generated when the rotor is rapidly braked, the solenoid is operated to separate the connector from the rotor, A preliminary washing step of rotating the lower speed than the rotational speed during washing so that the connector smoothly engages the bottom teeth of the solenoid so as to prevent rotation of the dehydration shaft during rotation of the washing shaft; A washing step in which washing is performed by rotating the washing shaft rotatable in the washing preliminary step; After the washing step is finished, the solenoid is turned off in order to move to the dehydration step, and the connector engaged with the solenoid bottom tooth by the elasticity of the spring is brought into close contact with the rotor of the driving motor. A dewatering preliminary step of rotating the connector at low speed to engage the teeth formed on the upper surface of the rotor; And a dehydration step of dehydration by rotating the laundry shaft and the dehydration shaft which are rotatable in the dehydration preliminary step. The method of claim 1, The washing preliminary step may include a first rotating step of rotating the laundry shaft and the dewatering shaft, which are engaged with the rotor, at a lower speed than the rotational speed during washing; A rapid braking step of simultaneously braking the washing shaft and the dehydrating shaft which rotates at a lower speed than the washing speed during the washing in the first rotating step to reduce friction between the deshrink and the connector generated during the solenoid operation; A mode conversion step of converting the solenoid operated in the rapid braking step into a maintenance state; The rotor is rotated at a lower speed than the rotational speed during washing so that the connector is separated from the rotor by the solenoid operated in the rapid braking step to engage the teeth formed in the solenoid bottom surface to close the connector is in close contact with the solenoid Clutch drive method of a washing machine comprising a step of rotating two. The method of claim 1, The dehydration preliminary step may include: a solenoid off step of stopping the operation of the solenoid so that the connector is pushed by the spring to be in close contact with the rotor; And a third rotation step of rotating the rotor at a lower speed than the rotational speed when washing so that the connector and the teeth of the rotor contacted in the solenoid off step are engaged.