KR20060006601A - Direct drive washing machine - Google Patents

Abstract

The present invention relates to a direct type washing machine, and more particularly, to a direct type washing machine that enables a dynamic clutching operation for converting to a dewatering stroke during a washing stroke to be stably and smoothly implemented. To this end, the present invention, and the outer case forming the appearance; An outer tub supported inside the outer case to accommodate the wash water therein; A washing and dehydrating combined inner tub rotatably housed in the outer tub; A driving motor for generating a driving force for rotating the inner tank; An input shaft formed at one end thereof, the other end of which is integrally coupled to the drive motor and rotated according to the driving of the drive motor; A plurality of planetary gears which are rotatably coupled to the input shaft and are coupled to the inner carrier so as to be relatively rotatable and are engaged with the sun gear and rotated to reduce the rotational speed of the input shaft to a predetermined ratio. A gear housing provided therein, the teeth engaging with each of the planetary gears are formed along an inner circumferential surface thereof, one end of which is coupled to the inner tank and rotated according to the rotation of the respective planetary gears to rotate the inner tank; It is connected to the inner carrier integrally and the outer carrier exposed to the outside of the gear housing; provides a direct type washing machine comprising a.

Washing Machines, Dynamic Clutching, Reduction, Gear Housings, Carriers

Description

Direct Drive Washing Machine {DIRECT DRIVE WASHING MACHINE}

1 is a view showing the structure of a conventional direct type washing machine

2 is a view illustrating main parts of FIG. 1;

3 is a view showing the structure of a direct type washing machine according to the present invention.

4 is a view illustrating main parts of FIG. 3;

5 is a view showing another embodiment of a direct type washing machine according to the present invention

6 is a view illustrating main parts of FIG. 5;

<Description of the symbols for the main parts of the drawings>

120: internal thread 121: spider

130: input shaft 131: sun gear

140: gear housing 140a: tooth

141: gear housing extension 150: drive motor

151: rotor 161: inner carrier

162: outer carrier 170: planetary gear

180: clutch member 190: bearing

The present invention relates to a direct type washing machine, and more particularly, to a direct type washing machine that enables a dynamic clutching operation for converting into a dewatering stroke during a washing operation to be implemented stably and smoothly.

1 is a view showing the structure of a conventional direct-type washing machine, Figure 2 is a view showing a drive device of a conventional direct-type washing machine.

As shown in the drawing, the conventional direct type washing machine includes an outer case 10 forming an outer appearance, an outer tank 11 supported by suspension inside the outer case 10 to accommodate washing water therein, and the outer tank 11. The inner tub 12 for both washing and dehydration combined with the inside of the tub 12 and a pulsator installed in the inner tub 12 to be rotated relative to the tub 12 to form a washing stream. (13), the inner tank rotating shaft 20, which is spoken with the inner tank 12 and rotates the inner tank 12, is disposed concentrically with each other inside of the inner tank rotating shaft 20, and also speaks to the pulsator 13 And a clutch device 40 for controlling rotation of the inner tank rotating shaft 20 and the pulsator rotating shaft 30 when washing or dehydrating the pulsator rotating shaft 30 for rotating the pulsator 13, and the inner tank. Drive motor 50 for generating the rotational force of the rotary shaft 20 and the pulsator rotary shaft 30 To consist.

In addition, the inner tub rotating shaft 20, the upper inner tub rotating shaft 21 is directly connected to the inner tub 12, the upper drum rotating shaft 21 is connected to the cylindrical drum 22 having a ring gear 22a formed on the lower inner peripheral surface And a lower inner rotary shaft 23 connected to the lower end of the drum 22 to transmit the rotational force of the driving motor 50 to the upper inner rotary shaft 21, wherein the upper inner rotary shaft 21 and the drum ( 22) and the lower inner rotating shaft 23 is coupled to each other by interference fit.

In addition, the pulsator rotating shaft 30 is disposed in the upper inner tubular rotating shaft 21 and connected to the pulsator 13 and the upper pulsator rotating shaft 31, and the drum 22 is located inside the drum ( And a plurality of planetary gears 33 which rotate in engagement with the ring gear 22a of the inner circumferential surface of the 22 to reduce the rotational speed of the driving motor 50 and transmit the rotational force to the upper pulsator rotation shaft 31. The sun gear 32a for rotating the gear 33 includes a lower pulsator rotating shaft (hereinafter referred to as an input shaft) 32 formed thereon, wherein the drive motor decelerated by the planetary gear 33 The rotational force of 50 is transmitted to the upper pulsator rotating shaft 31 via the carrier 34.

The conventional direct type washing machine having such a structure operates as follows.

First, in the washing stroke, after the water is supplied to the inside of the outer tub 10, the rotational force of the drive motor 50 is reduced through the input shaft 32, the planetary gear 33 and the ring gear 22a, and then the carrier 34 The pulsator 13 is transmitted to the pulsator rotating shaft 31, and thus the pulsator 13 is rotated inside the inner tub 12 to wash the laundry by forming a water flow.

At this time, the inner tank rotating shaft 21 is constrained by the clutch device 40 does not rotate.

When the washing is completed, the drain pump (not shown) is driven to drain, and so-called intermittent dehydration for smoothly draining the wash water containing the laundry by rotating the inner tank 12.

At this time, when the inner tank is rotated for intermittent dehydration, as described above, the rotational force of the drive motor 50 is transmitted to the pulsator rotation shaft 31 and the rotational force of the drive motor 50 is transmitted by the clutch device 40. The inner tank rotating shaft 23 is integrally connected to the input shaft 32, and thus the inner tank rotating shaft 21 and the pulsator rotating shaft 31 are simultaneously rotated without being decelerated.

When the drainage is completed, the inner tank 12 is rotated while the water is supplied to the inside of the outer tank 11 so that the rinsing stroke is performed. After the rinsing and intermittent dehydration are repeated several times, the final washing operation is completed. .

In addition, in the dehydration operation, the rotational force of the driving motor 50 is transmitted to the pulsator rotating shaft 31 and the inner tank rotating shaft 21 by the clutch device 40 as in the intermittent dehydration described above. The inner tub 12 is rotated at the same time to dehydrate the laundry.

By the way, in the conventional direct-type washing machine, bar decoupling had to connect the input shaft 32 that rotates at a relatively high speed and the inner tank rotation shaft 23 that rotates at a relatively low speed through the clutch device 40, Such a structure has a very disadvantageous problem in dynamic clutching (Dynamic Clutching) to convert to a dehydration stroke during the washing stroke.

In particular, when such a driving structure is applied to a drum type washing machine using a small motor (for example, an induction motor) with a small torque during initial driving, the dynamic clutching operation could not be realized stably and smoothly. There was a possibility of malfunction or noise and failure.

 Accordingly, an object of the present invention is to provide a direct washing machine that can stably and smoothly implement a dynamic clutching operation for converting into a dehydration stroke during a washing operation.

The present invention for achieving the above object, and an outer case forming an appearance; An outer tub supported inside the outer case to accommodate the wash water therein; A washing and dehydrating combined inner tub rotatably housed in the outer tub; A driving motor for generating a driving force for rotating the inner tank; An input shaft formed at one end thereof, the other end of which is integrally coupled to the drive motor and rotated according to the driving of the drive motor; A plurality of planetary gears which are rotatably coupled to the input shaft and are coupled to the inner carrier so as to be relatively rotatable and are engaged with the sun gear and rotated to reduce the rotational speed of the input shaft to a predetermined ratio. A gear housing provided therein, the teeth engaging with each of the planetary gears are formed along an inner circumferential surface thereof, one end of which is coupled to the inner tank and rotated according to the rotation of the respective planetary gears to rotate the inner tank; And an external carrier connected integrally to the inner carrier and exposed to the outside of the gear housing.

In addition, the direct type washing machine according to the present invention includes an outer case forming an outer appearance; An outer tub supported inside the outer case to accommodate the wash water therein; A washing and dehydrating combined inner tub rotatably housed in the outer tub; A driving motor for generating a driving force for rotating the inner tank; An input shaft having one end coupled to the eccentric bearing and the other end integrally coupled to the drive motor, the input shaft being rotated according to the driving of the drive motor; An inner carrier rotatably disposed concentrically with the input shaft, a plurality of rollers coupled to the inner carrier so as to be rotatable relative to each other, and eccentrically rotatably supported by the respective rollers, and coupled to the eccentric bearing for translational rotation. And a cycloid gear which decelerates the rotational speed of the input shaft at a predetermined ratio, and a cycloid tooth type engaged with the cycloid gear is formed along the inner circumferential surface by a plurality of pins, one end of which is coupled to the inner tank to form the cycloid gear. A gear housing that rotates according to the rotation of the inner tank and rotates the inner tank; And an external carrier connected integrally to the inner carrier and exposed to the outside of the gear housing.

In addition, it is characterized in that it further comprises a gear housing extending portion which is integrally connected to the gear housing and disposed between the outer carrier and the gear housing.

In addition, it characterized in that it further comprises a clutch device for restraining the outer carrier or integrally connect the gear housing and the outer carrier to control the rotational speed of the inner tank.

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

3 is a view illustrating a structure of a direct type washing machine according to the present invention, and FIG. 4 is a view illustrating main parts of FIG. 3.

5 is a view showing another embodiment of a direct type washing machine according to the present invention, Figure 6 is a view showing the main part of FIG.

However, in describing the present invention, a detailed description of known functions or configurations will be omitted to clarify the gist of the present invention.

Hereinafter, a case where the present invention is applied to a drum type washing machine will be described with an example.

As shown, the direct type washing machine according to the present invention includes an outer case (not shown) forming an outer shape, an outer tank (not shown) supported by the inside of the outer case to accommodate washing water therein, and Washing and dehydration combined with the inner tank 120 that is accommodated rotatably inside the outer tub, a drive motor 150 for generating a driving force for rotating the inner tub 120, coupled to the drive motor 150 is driven The input shaft 130 rotates according to the driving of the motor 150, and a gear housing 140 which selectively reduces the rotational force of the input shaft 130 and transmits it to the inner tank 120.

The outer case has a tubular shape with a door on the front side to allow the laundry to enter and exit, and a cylindrical outer tub is supported by a support spring and a damper (not shown) in the front / rear direction therein.

The inner tank 120 has a cylindrical shape along the front / rear direction of the outer tank and a plurality of dewatering holes (not shown) are formed on the circumferential surface so as to be able to communicate with the outside.

The rear region of the inner tub 120 is provided with a driving motor 150 driven by receiving power, and the driving motor 150 is a stator (not shown) fixedly coupled to the rear region of the inner tub 120. And a rotor 151 accommodating the stator therein and rotatably coupled thereto.

Between the inner tank 120 and the drive motor 150 is provided with a gear housing 140 for transmitting the driving force of the drive motor 150 to the inner tank 120, as will be described later.

The input shaft 130 is integrally coupled to the rotor 151 of the driving motor 150 through a bushing (not shown), and the sun gear 131 is integrally formed at an end of the input shaft 130.

The gear housing 140 is connected to the driving motor 150 through the input shaft 130 to transfer the rotational force of the driving motor 150 to the inner tank 120, the inner housing (11) inside the gear housing 140 Planetary gear reduction device is provided so that the rotational speed of 120 can be selectively reduced.

That is, the gear housing 140, the inner carrier 161 is arranged to be rotatably concentric with the input shaft 130, and coupled to the inner carrier 161 by coupling the shaft 161a to be relatively rotatable. In addition, the outer peripheral surface of the sun gear 131 is enclosed and engaged to rotate, a plurality of planetary gears 170 for reducing the rotational speed of the input shaft 130 to a predetermined ratio is provided, along the inner peripheral surface of the gear housing 140 Teeth 140a are formed to be engaged with each planetary gear 170, and one end of the gear housing 140 is integrally coupled to the spider 121 integrally coupled to the rear surface of the inner tank 120. By the same structure, each of the planetary gears 170 may be rotated through the shaft 161a as well as revolve around the sun gear 131 through the inner carrier 161, the gear housing 140 is The inner tank 120 is rotated according to the rotation of each planetary gear 170. Rotation can be.

In addition, the gear housing 140 is a bearing housing (not shown) in the rear region of the inner tank 120, that is, through the bearing 190 coupled to the bearing housing fixedly installed in the front and rear regions of the gear housing 140, respectively. It is rotatably supported.

Meanwhile, the inner carrier 161 is integrally connected to the inner carrier 161 and provided with an outer carrier 162 exposed to the outside of the gear housing 140. The outer carrier 162 has a cylindrical shape having a predetermined size and has an input shaft ( In the axial direction of the 130 may be integrally connected to be spaced apart from the inner carrier 161 at a predetermined interval and exposed to the outside of the gear housing 140 may be rotated integrally with the inner carrier 161.

In addition, between the outer carrier 162 and the gear housing 140 is provided with a gear housing extension 141 which is integrally connected to the gear housing 140 in a cylindrical shape corresponding to the outer carrier 162. The bar housing extension part 141 may be integrally rotated together with the gear housing 140 to be relatively rotatable with the outer carrier 162.

Thus, such a structure allows the inner carrier 161 inside the gear housing 140 to be constrained from the outside of the gear housing 140 by an outer carrier 162 connected integrally therewith, as well as the gear housing 140. ) Can be connected integrally.

That is, such a structure exposes the outer carrier 1662 connected integrally with the inner carrier 161 to the outside of the gear housing 140, thereby converting the dynamic clutching to the dehydrating stroke during the washing stroke. In this case, the connection with the input shaft 130 which rotates at a relatively high speed is excluded, and the inner / outer carriers 161 and 162 which are rotated at a relatively low speed are connected to the gear housing 140, and stable dynamic clutching can be achieved. To be.

Meanwhile, a conventional clutch device may be applied as a clutch device for selectively restraining the outer carrier 162 or integrally connecting the outer carrier 162 and the gear housing 140 to control the rotation speed of the inner tank. With reference to Figure 4 attached to an example of a clutch device for controlling the rotational speed of the inner tub 120 is as follows.

As shown, the outer carrier 162 is connected to the restraint or gear housing 140 and the input shaft on the outer circumferential surface of the outer carrier 162 and the gear housing extension 141 to control the rotational speed of the inner tank 120 The clutch member 180 is coupled to be movable along the axial direction of the 130.

In addition, an inner tooth portion 180a is formed on an inner circumferential surface of the clutch member 180, and an inner tooth portion 180a of a clutch member 180 is formed on an outer circumferential surface of the outer carrier 162 and the gear housing extension 141. The outer teeth 162a and 141a are formed to be engaged with each other.

In addition, such a clutch member 180 is moved by a clutch lever (not shown) driven by a clutch lever driving means (not shown), and selectively selects the external carrier 162 and the gear housing extension 141. When the clutch member 180 is engaged only with the outer carrier 162, the rotation of the clutch member 180 is constrained by the fixing bracket (not shown), and the rotation of the outer carrier 162 is constrained. .

Hereinafter, operations of the washing administration and the dehydration administration of the direct type washing machine according to the present invention will be described.

First, when power is applied to the driving motor 150 during the washing stroke and the rotor 151 is rotated, the input shaft 130 integrally coupled thereto rotates, and the sun gear 131 formed at the end of the input shaft 130 rotates. The sun gear 131 rotates the plurality of planetary gears 170 engaged therewith.

At this time, each planetary gear 170 is supported on the inner carrier 161, the rotation of the outer carrier 162 integrally connected with the inner carrier 161 is limited by the clutch member 180, so the rotation does not rotate only. Done.

As the planetary gear 170 rotates, the gear housing 140 formed on the inner circumferential surface of the tooth 140a engaged with the planetary gear 170 rotates. In this case, the gear housing 140 includes the sun gear 131 and the planetary gear 170. And it decelerates and rotates according to the reduction ratio with tooth 140a.

In this way, the gear housing 140 which is rotated in a reduced speed rotates the inner tub 120 integrally coupled thereto so that the laundry therein is washed.

When the washing is completed, the drain pump (not shown) is driven to drain the water, and when the drainage is completed, the inner tank 120 is rotated while supplying water to the inside of the outer tank to perform a rinsing stroke.

After the rinsing cycle is repeated several times, the dehydrating stroke is finally performed. In this case, as described above, the dehydrating stroke is converted to the dehydrating stroke by manipulating (dynamic clutching) the clutch member 180 while the inner tank 120 is decelerated and rotated at a low speed. do.

That is, in the dehydration stroke, the clutch member 180 which restrains the outer carrier 162 is moved, the restraint of the outer carrier 162 is released, and the outer carrier 162 and the gear housing extension 141 are moved. In this case, the inner gear 161 is integrally connected to the outer carrier 162 so that the rotation of the planetary gear 170 is constrained so that the planetary gears 170 do not rotate. It is done.

As the planetary gears 170 revolve, the gear housing 140 formed on the inner circumferential surface of the tooth 140a engaged therewith rotates, and the gear housing 140 rotates at the input rotation speed without deceleration. .

The gear housing 140 rotated as described above rotates the inner tub 120 integrally coupled thereto, and the laundry therein is dehydrated.

On the other hand, as another embodiment of the direct type washing machine according to the present invention, the direct type washing machine according to the present invention has a longer life, less noise, and a deceleration efficiency than the planetary gear reduction device as a reduction device for reducing the rotational speed of the inner tank. The excellent cycloid reduction device can be applied, described with reference to the accompanying Figures 5 to 6 as follows.

In addition, the same or equivalent reference numerals are given to the same or equivalent components as those described above, and detailed description thereof will be omitted.

As shown, the direct-type washing machine according to another embodiment of the present invention, the outer case (not shown) forming an appearance; An outer tub (not shown) supported inside the outer case and accommodating wash water therein; Washing and dehydration combined inner tub 120 that is rotatably accommodated in the outer tub and; A drive motor 150 generating a driving force for rotating the inner tub 120; An input shaft 130 having one end coupled to the eccentric bearing 131 integrally and the other end integrally coupled to the drive motor 150 and rotated according to the driving of the drive motor 150; An inner carrier 161 disposed to be rotatably concentric with the input shaft 130, a plurality of rollers 161 b coupled to the inner carrier 161 so as to be relatively rotatable by coupling the shaft 161 a, Supported by the eccentric rotation to each of the rollers (161b) and coupled to the eccentric bearing 131, the translation is rotated and the cycloid gear 170 for reducing the rotational speed of the input shaft 130 to a predetermined ratio is provided therein The cycloid tooth 140a meshed with the cycloid gear 170 is formed along the inner circumferential surface by a plurality of pins 140b, and one end is coupled to the inner tub 120 to rotate according to the rotation of the cycloid gear 170. A gear housing 140 that rotates and rotates the inner tank 120; It is integrally connected to the inner carrier 161 is configured to include an outer carrier 162 exposed to the outside of the gear housing 140.

The outer carrier 162 is a tubular shape having a predetermined size and is integrally connected to be spaced apart from the inner carrier 161 at predetermined intervals along the axial direction of the input shaft 130 and exposed to the outside by the gear housing 140. It can be rotated integrally with the carrier 161.

In addition, between the outer carrier 162 and the gear housing 140 is provided with a gear housing extending part 141 integrally connected to the gear housing 140 in a cylindrical shape corresponding to the outer carrier 162. The gear housing extension 141 may be integrally rotated together with the gear housing 140 to be relatively rotatable with the outer carrier 162.

Therefore, such a structure exposes the outer carrier 162 integrally connected with the inner carrier 161 to the outside of the gear housing 140, thereby relatively relatively during dynamic clutching to convert it into a dewatering stroke during the washing stroke. Excluding the connection with the input shaft 130 that rotates at a high speed, the inner / outer carriers (161, 162) and the gear housing 140, which rotates at a relatively low speed is connected to enable a stable dynamic clutching.

On the other hand, the clutch member 180 for selectively restraining the outer carrier 162 or integrally connecting the outer carrier 162 and the gear housing 140 to control the rotational speed of the inner tank 120 is provided. Therefore, duplicate description thereof will be omitted.

By such a structure, when power is applied to the driving motor 150 during the washing stroke and the rotor 151 is rotated, and the input shaft 130 integrally coupled thereto rotates, the eccentric coupled to the end of the input shaft 130 is rotated. The bearing 131 is slidably rotated, whereby the cycloid gear 170 coupled with the eccentric bearing 131 is translated.

At this time, the cycloid gear 170 is supported by the roller 161b of the inner carrier 161, the rotation of the outer carrier 162 connected integrally with the inner carrier 161 is restrained by the clutch member 180. As the cycloid gear 170 is supported by the roller 161b and eccentrically rotated, the gear housing 140 formed on the inner circumferential surface of the cycloid tooth 140a engaged with the cycloid gear 170 rotates.

In addition, the gear housing 140 is decelerated and rotates according to the reduction ratio according to the number of teeth formed on the outer circumferential surface of the cycloid gear 170 is less than the number of teeth of the cycloid tooth 140a formed on the inner circumferential surface of the gear housing 140.

In this way, the gear housing 140 which is rotated in a reduced speed rotates the inner tub 120 integrally coupled thereto so that the laundry therein is washed.

On the other hand, the clutch member 180 that restrained the outer carrier 162 is moved during the dehydration stroke, the restraint of the outer carrier 162 is released, and the outer carrier 162 and the gear housing extension 141 are integrally formed. In this case, the inner and outer carriers 161 and 162 are rotated by the cycloid gear 170 that is rotated according to the rotation of the input shaft 130, and the inner and outer carriers 161 and 162 are rotated. The gear housing 140 connected integrally rotates without being decelerated.

The gear housing 140 rotated as described above rotates the inner tub 120 integrally coupled thereto, and the laundry therein is dehydrated.

As described above, the present invention connects the inner / outer carriers 161 and 162 which rotate at a relatively low speed to the gear housing 140, and enables the dynamic clutching operation to be implemented, thereby stably and smoothly performing the dynamic clutching operation. It is also possible to prevent the occurrence of malfunction or noise and failure due to the conventional unstable dynamic clutching structure.

In addition, in the above-described embodiment, although the present invention has been described and illustrated as being applied to a drum type washing machine, it is, of course, applicable to a vertical type washing machine.

Although the preferred embodiments of the present invention have been described above by way of example, the scope of the present invention is not limited to these specific embodiments, and may be appropriately changed within the scope described in the claims.

As seen above, according to the direct-type washing machine according to the present invention, there is an effect that the dynamic clutching operation for converting the dehydration stroke during the washing stroke can be stably and smoothly implemented, and in the conventional unstable dynamic clutching structure There is an effect that can prevent the occurrence of malfunction or noise and failure according to.

Claims (4)

An outer case forming an appearance; An outer tub supported inside the outer case to accommodate the wash water therein; A washing and dehydrating combined inner tub rotatably housed in the outer tub; A driving motor for generating a driving force for rotating the inner tank; An input shaft formed at one end thereof, the other end of which is integrally coupled to the drive motor and rotated according to the driving of the drive motor; A plurality of planetary gears which are rotatably coupled to the input shaft and are coupled to the inner carrier so as to be relatively rotatable and are engaged with the sun gear and rotated to reduce the rotational speed of the input shaft to a predetermined ratio. A gear housing provided therein, the teeth engaging with each of the planetary gears are formed along an inner circumferential surface thereof, one end of which is coupled to the inner tank and rotated according to the rotation of the respective planetary gears to rotate the inner tank; And an external carrier connected integrally to the inner carrier and exposed to the outside of the gear housing. An outer case forming an appearance; An outer tub supported inside the outer case to accommodate the wash water therein; A washing and dehydrating combined inner tub rotatably housed in the outer tub; A driving motor for generating a driving force for rotating the inner tank; An input shaft having one end coupled to the eccentric bearing and the other end integrally coupled to the drive motor, the input shaft being rotated according to the driving of the drive motor; An inner carrier rotatably disposed concentrically with the input shaft, a plurality of rollers coupled to the inner carrier so as to be rotatable relative to each other, and eccentrically rotatably supported by the respective rollers, and coupled to the eccentric bearing for translational rotation. And a cycloid gear which decelerates the rotational speed of the input shaft at a predetermined ratio, and a cycloid tooth type engaged with the cycloid gear is formed along the inner circumferential surface by a plurality of pins, one end of which is coupled to the inner tank to form the cycloid gear A gear housing that rotates according to the rotation of the inner tank and rotates the inner tank; And an external carrier connected integrally to the inner carrier and exposed to the outside of the gear housing. The method according to claim 1 or 2, And a gear housing extension unit integrally connected to the gear housing and disposed between the outer carrier and the gear housing. The method according to claim 1 or 2, And a clutch device for restraining the outer carrier or integrally connecting the gear housing and the outer carrier to control the rotational speed of the inner tank.

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