JP4131540B2 - Horizontal drum washing machine - Google Patents

Description

[0001]
Technical field
The present invention relates to a drum washing machine, and more particularly to a drum washing machine in which a pair of drums provided inside a tub are rotatably provided in opposite directions so that washing can be performed.
[0002]
Background art
In general, a drum washing machine performs washing using friction force between a rotating drum and laundry that receives a driving force of a motor unit in a state where detergent, washing water, and laundry are put in the drum. In addition, there is almost no damage to the laundry, and the laundry can be washed or squeezed without being entangled with each other.
[0003]
FIG. 1 is a longitudinal sectional view schematically showing a drum washing machine according to the related art, and FIG. 2 is an enlarged sectional view of “A” portion of FIG.
[0004]
The drum washing machine according to the related art will be described with reference to FIGS. 1 and 2 as follows.
[0005]
Hereinafter, for the sake of understanding, the following description will be made with the left side of the drawing as the front side of the drum washing machine and the right side of the drawing as the rear side of the drum washing machine.
[0006]
As shown in FIGS. 1 and 2, a cylindrical tab 2 is provided inside the cabinet 1, and a cylindrical drum 3 is rotatably provided inside the tab 2.
[0007]
The motor housing 10a is fastened by fastening means 19 so that front and rear bearings 17 and 18 for rotatably supporting the drive shaft 3b are provided behind the rear wall 2a of the tab 2.
[0008]
A hanging spring 9 for supporting the tab 2 is provided between the inner side of the upper surface of the cabinet 1 and the upper side of the outer peripheral surface of the tab 2, and the inner side of the lower surface of the cabinet 1 and the tab. A damper 8 for attenuating vibrations of the tab 2 generated during dehydration is provided between the lower peripheral side of the outer peripheral surface 2.
[0009]
A front end portion of a drive shaft 3b is connected to a spider 3a fixedly installed at the rear of the drum 3, and the drive shaft 3b passes through a central portion of the tab 2 and from the outside of the rear wall 2a of the tab 2 from a motor portion. It is connected to ten rotors 11. Further, when a voltage is applied to the stator 12 of the motor unit 10, the rotor 11 can rotate, and the drive shaft 3b rotates in conjunction with the rotation.
[0010]
The operation of the related art drum washing machine having such a configuration will be described below.
[0011]
When power is applied to the stator 12 of the motor unit 10 after the laundry, the detergent, and the washing water are filled in the drum 3, the rotor 11 rotates. The drive shaft 3b is rotated by the rotation of the rotor 11, and the drum 3 is rotated by the rotation of the drive shaft 3b. The laundry housed inside the drum 3 is washed by the washing water and the frictional force with the drum 3.
[0012]
However, the related art drum washing machine has the following problems. First, in the washing method of the related art drum washing machine, the laundry rises up to a certain height while rotating along the inner surface of the rotating drum 2 by a lifter (not shown) formed on the inner surface of the drum 2. The circulation process that falls later is repeated, and washing is performed by the frictional force generated between the laundry, the drum 2 and the lifter.
[0013]
However, in this case, the drum 2 rotates only in one direction for a predetermined time, so that the laundry housed in the drum 2 or the laundry that rotates while continuing to rotate in only one direction and then falls to the lower part of the drum 2 is dropped. Will repeat.
[0014]
In addition, there is a problem that uniform washing is not performed over the entire laundry, and concentrated washing is performed only on a certain portion, so that the entire laundry is not uniformly washed and the time required for washing is increased. .
[0015]
In addition, when a lot of laundry contained inside the drum 2 is intertwined by rotating while being rotated only in one direction for a predetermined time at the time of washing, the laundry continues in an entangled state. Thus, there is a problem that the possibility of damage to the laundry is increased by rotating only in one direction.
[0016]
Disclosure of the invention
The present invention has been devised to solve the problems of the related art, and the object of the present invention is to prevent the entanglement of the laundry by forming a water flow in opposite directions in the laundry space formed by the drum at the same time. An object of the present invention is to provide a drum washing machine that increases the washing efficiency.
[0017]
In order to achieve the above object, the present invention includes a tab provided inside the cabinet;
In the drum washing machine provided with a drum that is provided inside the tab and is rotatable by receiving the driving force of the motor unit, a pair of rotatable inside the tab by receiving the driving force of the motor unit. There is provided a drum washing machine, wherein each drum is provided, and each of the drums is rotatably provided in opposite directions.
[0018]
In addition, the pair of drums is an external drum rotatably provided inside the tab;
It is desirable to have an internal drum having a smaller diameter and an axial length than the external drum and rotatably provided inside the external drum.
[0019]
Preferably, a protrusion is formed radially inward on the circumference of the outer drum at a position corresponding to the front end of the inner drum so as to maintain shilling between the inner drum and the outer drum. .
[0020]
It is preferable that a separate silling means is further provided between the protrusion and the internal drum so that the laundry is not caught in the gap, and the rear end of the internal drum is driven by the internal drum rotation shaft. A stator fixed to the rear end of the rear wall of the tab is located inside the rotor, and the rear end of the external drum is connected to the rotary shaft of the external drum. The drum rotation shaft is preferably provided with a torque transmission device for transmitting the torque of the inner drum rotation shaft to the outer drum rotation shaft.
[0021]
An outer peripheral surface of the outer drum rotating shaft is rotatably supported by a front bearing provided at a front end portion of a gear box housing formed on a rear wall of the tab, and an outer peripheral surface of the inner drum rotating shaft is rear of the bearing housing. It is desirable to be rotatably supported by a rear bearing provided at the end.
[0022]
In addition, the rotational force transmitting device is a gear box that is fixed to the inside of the gear box housing in a shape in which a front end portion and a rear end portion are opened so that the inner / outer drum rotation shaft can penetrate or be inserted inward. A sun gear coaxially formed so as to rotate in communication with the rotation of the internal drum rotation shaft, a large number of meteor gears rotating by receiving the rotational force of the sun gear, and a rear end portion of the external drum rotation shaft A shaft extension portion formed on the inner peripheral surface of the meteor gear so as to mesh with the meteor gear, and a rotation shaft that forms a rotation center of the meteor gear is formed in front of the base, and the inner portion is formed in the rear. A carrier having an extension portion positioned between the drum rotation shaft and the rear end opening of the gear box; and the inner / intermediate surface of the inner drum rotation shaft and the inner surface of the outer drum rotation shaft. External dora A first rotating shaft interrupting means for allowing interlocking rotation of the rotating shaft only in one side direction; and rotation of the carrier by being interposed on the inner peripheral surface of the rear end opening of the gear box and the outer peripheral surface of the extended portion of the carrier. It is characterized by comprising second rotating shaft interrupting means that allows only in one direction.
[0023]
Here, the sun gear is preferably formed integrally with the internal drum rotating shaft, and the meteor gear is preferably coaxially coupled with two gears having different radii and the number of gears.
[0024]
In addition, it is preferable that the carrier rotates in the same direction as the rotation direction with respect to the central axis of the internal drum rotation axis as the internal drum rotates.
[0025]
The first and second rotating shaft interrupting means are preferably unidirectional bearings, and an oilless bearing is provided between the outer peripheral surface of the inner drum rotating shaft and the inner peripheral surface of the carrier extension. Preferably, a shilling means is additionally provided between the outer peripheral surface of the inner drum rotating shaft on the rear side of the oilless bearing and the inner peripheral surface of the carrier extension.
[0026]
The first rotating shaft interrupting means allows the inner drum rotating shaft and the outer drum rotating shaft to rotate in opposite directions during washing, and allows the outer rotating shaft to rotate in the same direction as the inner drum rotating shaft during dehydration. Desirably, the drum rotation shaft is constrained, and the second rotation shaft intermittent means constrains the gear box and the carrier to rotate in the same direction during washing, and allows rotation in opposite directions to each other during dehydration. Preferably, the diameter of the shaft extension is larger than the diameter of the outer drum rotating shaft and smaller than the diameter of the gear box.
[0027]
The internal drum rotates by receiving the driving force of a drive motor separately provided on one side of the tab, and the external drum has a rear end connected to the external drum rotation shaft, and the external drum rotation shaft includes the internal drum. It is preferable that a rotational force transmission device for transmitting the rotational force of the drum rotational shaft to the external drum shaft is provided.
[0028]
Here, the power transmission to the internal drum includes a drive motor provided on the lower side of the tab, a motor pulley connected to the drive motor, and a drum pulley provided on the internal drum rotation shaft. It is desirable that the belt pulley means transmit the rotational force of the motor pulley to the drum pulley.
[0029]
A bearing housing is integrally formed at the center of the rear wall of the tab, and a front bearing and a rear bearing are provided at the front and rear portions of the bearing housing so as to support the outer peripheral surface of the external drum rotating shaft. Is desirable.
[0030]
It is preferable that a gear box is provided on the rear side of the rear wall of the tab so as to accommodate the rotational force transmission device.
[0031]
Preferably, a plunge portion is formed along the outer peripheral surface of the front portion of the gear box so as to be fastened by fastening means, and the gear box is coupled to the rear wall of the tab.
[0032]
A plurality of fastening holes may be formed in the plunge portion so as to fasten fastening means along a circumferential direction, and fixing holes may be formed in positions corresponding to the fastening holes in the rear wall of the tab. desirable.
[0033]
It is preferable that a large number of lifters provided so as to protrude radially inward on the inner peripheral surface of each drum are formed long along the axial direction.
[0034]
Among the lifters, the lifter formed on the inner peripheral surface of the internal drum has a smaller cross-sectional size as it goes forward in the axial direction, and the lifter formed on the inner peripheral surface of the external drum is It is desirable that the size of the cross section be smaller as it goes rearward along the axial direction, and it is desirable that the lifter has a triangular cross section.
[0035]
It is desirable that the lifter has a “M” shape in cross section and a groove is formed on the inner end in the radial direction.
[0036]
Among the lifters, the lifter formed on the inner peripheral surface of the internal drum is a front side (door side) along the axial direction of the laundry and water flow accommodated therein by rotating the internal drum during washing. The lifter formed on the inner peripheral surface of the external drum is moved along the axial direction of the laundry and water flow accommodated therein by the rotation of the external drum during washing. It is formed in a spiral shape so as to move backward.
[0037]
According to another embodiment of the present invention, the rotary drum is rotatably provided inside the tub, and an external drum rotating shaft is axially connected to the rear end of the tub. An external drum that is axially connected to a stator fixed to an end portion, and is rotatably provided inside the external drum. An internal drum rotation shaft is axially connected to a rear end portion of the external drum, and a rear end of the internal drum rotation shaft. The end is extended to the rear side of the front pipe through hole formed in the rear central part of the rear wall of the tab, and is formed integrally with the rear wall. A gear box housing having a hollow space and having a rear tube passage hole formed at the rear end thereof, and an outer peripheral surface of the outer drum rotating shaft and an inner drum provided in the front tube passage hole and the rear through hole, respectively. Freely rotate along the outer peripheral surface of the rotating shaft A front / rear bearing to be supported, and a gear box fixed to the inside of the gear box housing in a shape in which a front end portion and a rear end portion are opened so that the inner / outer drum rotation shaft can penetrate or be inserted inward. A sun gear coaxially formed so as to rotate in conjunction with the rotation of the internal drum rotation shaft, a number of meteor gears rotating by receiving the rotational force of the sun gear, and extending from the rear end of the external drum rotation shaft A shaft extension portion formed with a gear portion so as to mesh with the meteor gear on the inner peripheral surface thereof, and a rotation shaft forming a rotation center with the meteor gear in front of the base, A carrier having an extension located between the inner drum rotating shaft and the rear end opening of the gear box is disposed on the rear, and is disposed on the outer peripheral surface of the inner drum rotating shaft and the inner peripheral surface of the outer drum rotating shaft. The A first rotating shaft interrupting means for allowing interlocking rotation of the inner / external drum rotating shaft only in one side direction; and an inner peripheral surface of the rear end opening of the gear box and an outer peripheral surface of the extension portion of the carrier. And a rotational force transmitting device comprising a second rotating shaft interrupting means for allowing the interlocking rotation of the gear box and the carrier only in one side direction.
[0038]
According to another embodiment of the present invention, the rotary drum is rotatably provided inside the tab, and an external drum rotary shaft is axially connected to the rear end of the tab. An external drum penetrating the outside of the tub, a lower side of the tab, a drive motor connected to a motor pulley on the drive shaft, and an inner side of the external drum, which is rotatably provided. A drum rotation shaft is connected to the shaft, and a rear end portion of the inner drum rotation shaft is connected to a drum pulley to transmit the rotational force of the driving motor by belt means, and the inner / outer drum rotation shaft is connected to the inner side. A gear box having a front end portion and a rear end portion opened so as to be inserted into or inserted into a rear portion of the rear wall of the tab by fastening means and having a hollow space inside A front-rear bearing provided at a front portion and a rear portion of a bearing housing formed in a central portion of the rear wall of the tab to rotatably support an outer peripheral surface of the external drum rotation shaft; and an inner drum rotation shaft A sun gear coaxially formed to rotate in conjunction with the rotation, a number of meteor gears that rotate by transmitting the rotational force of the sun gear, and an inner peripheral surface that extends from a rear end portion of the external drum rotation shaft A shaft extension portion in which a gear portion is formed so as to mesh with the meteor gear is formed on the upper side, a rotation shaft that forms a rotation center of the meteor gear is formed in front of the base, and the inner drum rotation shaft is formed on the rear side And a carrier having an extension located between the rear end opening of the gear box and the inner / outer drum rotating shaft interposed on the outer peripheral surface of the inner drum rotating shaft and the inner peripheral surface of the outer drum rotating shaft. Interlocking times The first rotating shaft interrupting means that allows the rotation of the carrier only in one direction, and the rotation of the carrier is allowed only in one direction by being interposed on the inner peripheral surface of the rear end opening of the gear box and the outer peripheral surface of the extension portion of the carrier. And a rotational force transmission device comprising second rotating shaft interrupting means.
[0039]
As described above, according to the present invention, water flows in opposite directions are simultaneously formed in the washing space formed by the drum, so that the entire surface of the laundry is balanced with the inner surface of the inner drum and the outer drum. As a result, it causes friction, and the effect of improving the washing performance can be obtained.
[0040]
In addition, there is an effect that the laundry can be prevented from being entangled by washing the inner drum and the outer drum alternately.
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[0041]
For the sake of understanding, the following description will be made with the left side of the drawing as the front of the drum washing machine and the right side of the drawing as the rear of the drum washing machine.
[0042]
First embodiment
FIG. 3 is a longitudinal sectional view showing a drum washing machine according to a first embodiment of the present invention. FIG. 4 is an enlarged view of a main part of FIG. 3, and the drum washing machine according to the present invention is described with reference to the drawing. The configuration and operation will be described.
[0043]
As shown in FIG. 3, the drum washing machine according to the present invention is provided with a tab 100 on the inside of the cabinet, and an external drum 200 having a front opening is rotatably provided on the inside of the tab 100.
[0044]
A front side is opened inside the external drum 200, and an internal drum 300 having a smaller diameter and an axial length than the external drum 200 is rotatably provided inside the external drum 200 in a coaxial direction.
[0045]
In addition, a protrusion 230 is formed on the outer drum 200 corresponding to the position of the front end of the inner drum 300 and protrudes a predetermined length inward in the radial direction, and the protrusion 230 is integrated with the outer drum 200. A separate member may be attached on the inner peripheral surface of the external drum 200.
[0046]
In addition, a fastening means such as a bolt or a screw is used to prevent the laundry from being caught inside the gap between the internal drum 300 and the external drum 200 at the front end of the internal drum 300 adjacent to the protrusion 230. The shilling means 330 is fastened by 330a.
[0047]
The shilling means 330 has a diameter substantially corresponding to the diameter of the internal drum 300 and has a predetermined width, and is fastened by the fastening means 330 a along the front end portion of the internal drum 300.
[0048]
At this time, it is possible to install the front end of the shilling means 330 so as to abut against the protrusion 230. However, when the shilling means 330 and the protrusion 230 are abutted, Although the laundry can be completely blocked from being caught inside, problems such as frictional noise and wear due to the rotational contact between the protrusion 230 and the shilling means 330 occur when the drums 200 and 300 rotate.
[0049]
Therefore, it is desirable to maintain only a minimum gap between the protrusion 230 and the shilling means 330 so that they do not contact each other. The material of the shilling means 330 is low in friction noise and excellent in heat resistance. It is desirable to be made of a synthetic resin material having excellent wear resistance.
[0050]
The inner drum 300 and the outer drum 200 of the drum washing machine according to the present invention are rotatably provided by the operation of a motor unit 50 that is axially connected to the rear thereof, which will be described in detail below.
[0051]
An inner drum rotating shaft 310 is connected to the rear end portion of the inner drum 300, and the rear end portion of the inner drum rotating shaft 310 passes through the center of the rear wall 120 of the tab 100 and is located on the rear side of the tab 100. It is connected with the motor part 10 provided in the.
[0052]
A spider 220 is fixed to the rear end portion of the external drum 200, and an external drum rotation shaft 210 is connected to the center of the rear end portion of the external drum 200. The external drum rotation shaft 210 transmits a rotational force described later. The rotating force of the internal drum rotating shaft 310 is received by the device and the first and second rotating shaft interrupting means 401 and 402.
[0053]
In addition, a gear box housing 130 having a hollow space is integrally formed on the rear side of the rear wall 120 of the tab 100, and the outer drum rotating shaft 210 and the inner drum rotating shaft 310 rotate on the inner side. It is inserted freely, and a rotational force transmission device is provided inside thereof.
[0054]
A gear box 90 is fixedly installed inside the gear box housing 130. The gear box 90 is formed in a cylindrical shape having a smaller diameter than the gear box housing 130, and has a front portion and a rear portion opened. .
[0055]
Referring to FIG. 4, a front through hole 121 having a predetermined diameter is formed at the center of the rear wall 120 of the front portion of the gear box housing 130 (ie, the tab 100). A rear through hole 122 is formed at the center so that the inner drum rotating shaft 310 can be passed therethrough.
[0056]
A front bearing 61 is provided at the front part of the front through hole 121, and a rear bearing 62 is provided at the rear part of the rear through hole 122. At this time, the inner ring of the front bearing 61 rotatably supports the outer peripheral surface of the outer drum rotating shaft 210, and the inner ring of the rear bearing 62 supports the outer peripheral surface of the inner drum rotating shaft 310 rotatably.
[0057]
The external drum rotation shaft 210 and the internal drum rotation shaft 310 pass through the rear wall 120 of the tab 100 and are rotatably supported on the rear side thereof, and receive the rotational force from the motor unit 10. This will be described in more detail.
[0058]
The internal drum rotating shaft 310 passes outside the rear through hole 122 of the gear box housing 130, and its rear end is outside the rear through hole 122 and is connected to a rotor 50a of the motor unit 50, a bolt or the like. Combined by means.
[0059]
Further, a stator 50b is coupled to the rear end of the gear box housing 130, and a magnet 51 of the rotor 50a is located on the radially outer side of the stator 50b, so that the rotor 50a and The stator 50b constitutes a motor unit 50 that generates a rotational force.
[0060]
In addition, when power is applied to the motor unit 50, the rotor 50a rotates in the forward and reverse directions. Accordingly, the internal drum rotating shaft 310 that is axially connected to the rotor 50a rotates, thereby rotating the internal drum. 300 can be rotated in forward and reverse directions.
[0061]
As described above, according to the first embodiment of the drum washing machine of the present invention, the internal drum 300 and the external drum 200 rotate in opposite directions during washing (for example, the internal drum is clockwise and the external drum is counterclockwise). In addition, it is provided to rotate in the same direction (for example, all counterclockwise) during dehydration.
[0062]
As described above, the rotation of the internal drum 300 and the external drum 200 in opposite directions can be realized by the rotational force transmission device according to the present invention, and the internal drum 300 and the external drum 200 are rotated in the same direction. This can be realized by the first and second rotating shaft interrupting means 401 and 402.
[0063]
In addition, the external drum 200 can be rotated in the opposite direction to the rotation direction of the internal drum 300 during washing, and the internal drum 300 and the external drum 200 can be rotated in the same direction during dehydration.
[0064]
Hereinafter, the rotational force transmission device and the first and second rotating shaft interrupting means 401 and 402 will be described in more detail.
[0065]
A spider 220 is fixedly coupled to the rear end portion of the external drum 200, and an external drum rotating shaft 210 is connected to the center of the rear end portion of the external drum 200. The outer drum rotating shaft 210 has a shaft extension 215 extending to the inside of the gear box 90, and a gear portion 215 a is formed on the inner surface of the shaft extension 215. At this time, the diameter of the shaft extension 215 is larger than the diameter of the outer drum rotating shaft 210 and smaller than the diameter of the gear box 90.
[0066]
A sun gear 315 is coaxially formed on the internal drum rotation shaft 310 so as to rotate in conjunction with the rotation of the internal drum rotation shaft 310. The meteor gears 71 and 72 are rotated by receiving the rotational force of the sun gear 315. The meteor gears are formed by coaxially coupling two gears having different radii and the number of gears. is there.
[0067]
The meteor gears 71 and 72 are supported by a rotating shaft 81 formed on the base 82 of the carrier 80 and mesh with the gear b 215a of the shaft extension 215 to rotate the rotational force of the sun gear 315 to the external drum. It will be transmitted to the axis 210.
[0068]
An extension portion 83 is formed on the rear side of the base 82 between the inner drum rotation shaft 310 and the rear end opening of the gear box 90. The extension portion 83 and the inner drum rotation shaft 310 are connected to each other. The outer peripheral surface is provided at a predetermined interval. Further, an oilless bearing 89 and a shilling means 88 are sequentially interposed between the extension 83 and the outer peripheral surface of the internal drum rotation shaft 310, so that the space between the extension 83 and the internal drum rotation shaft 310 is interposed. Airtightness will be maintained.
[0069]
A shilling means 41 for preventing leakage toward the gear box 90 is provided between the inner peripheral surface of the external drum rotating shaft 210 and the outer peripheral surface of the internal drum rotating shaft 310.
[0070]
Similarly, a shilling means 42 for preventing leakage toward the front bearing 61 is also provided between the outer peripheral surface of the outer drum rotating shaft 210 and the spider 220 provided at the rear of the outer drum 200. .
[0071]
As described above, the inner drum 300 and the outer drum 200 of the drum washing machine of the present invention are rotatably provided in opposite directions during washing by the rotational force transmitting device.
[0072]
However, since the internal drum 300 and the external drum 200 should rotate at high speed in the same direction at the time of dehydration, a separate means for rotating the internal drum 300 and the external drum 200 in the same direction is required. In the drum washing machine according to the invention, such a function is performed by the first and second rotating shaft interrupting means 401 and 402.
[0073]
This will be described in more detail.
[0074]
Between the outer peripheral surface of the inner drum rotating shaft 310 and the inner peripheral surface of the outer drum rotating shaft 210, a first rotating shaft interrupting means 401 that allows interlocking rotation of the inner and outer drum rotating shafts 310, 210 only in one direction. Intervenes.
[0075]
Further, a second rotating shaft interrupting means 402 that allows rotation of the carrier 80 only in one direction between the inner peripheral surface of the rear end opening of the gear box 90 and the outer peripheral surface of the extension portion 83 of the carrier 80. Intervenes.
[0076]
That is, the first and second rotating shaft interrupting means 401 and 402 can employ one-side bearings. For example, the rotor 50a is rotated counterclockwise during dehydration to rotate the internal drum rotating shaft 310 counterclockwise. When the first drum is rotated to the right, the outer drum rotating shaft 210 is structured to rotate in the counterclockwise direction like the inner drum rotating shaft 310 by the restraint of the first rotating shaft interrupting means 401.
[0077]
As described above, when the outer drum rotating shaft 210 and the inner drum rotating shaft 310 are all rotated counterclockwise, the sun gear 315 on the inner drum rotating shaft 310 and the gear portion 215a of the shaft extension 215 are engaged. The meteor gears 71 and 72 in the state are all in a stopped state. Accordingly, in such a case, the carrier 80 also rotates in a counterclockwise direction like the inner / outer drum rotation shaft 210.
[0078]
As described above, in the state where the inner and outer drum rotating shafts 310 and 210 and the carrier 80 are all rotated counterclockwise at the time of dehydration, the second rotating shaft interrupting means 402 is rotated in the rotating direction of the carrier 80 ( It is natural that the rotation is not restricted in the counterclockwise direction.
[0079]
The second rotating shaft interrupting means 402 allows the carrier 80 to rotate counterclockwise, but constrains the clockwise rotation for the following reason.
[0080]
That is, according to the present invention, the inner drum rotating shaft 310 and the outer drum rotating shaft 210 are opposite in rotation direction during washing, and at this time, the carrier 80 rotates in the same direction as the inner drum rotating shaft 310. . In such a case, if the rotation of the carrier 80 is constrained, the rotational force of the external drum rotating shaft 210 can be more reliably maintained.
[0081]
The reason why the two meteor gears 71 and 72 having different radii and the number of gears are provided on the rotation shaft 81 of the carrier 809 is that the radius and gears of the meteor gears 71 and 72 are appropriately changed. Therefore, the rotational speeds of the internal drum 300 and the external drum 200 can be appropriately changed. That is, the washing efficiency is increased by appropriately adjusting the ratio of the rotational speeds of the internal drum 300 and the external drum 200.
[0082]
Second embodiment
FIG. 5 is a longitudinal sectional view showing a second embodiment of the drum washing machine according to the present invention.
[0083]
Referring to FIG. 5, the drive motor 30 is fixed to one side of the tab 100, and a motor pulley 34 is connected to the shaft of the drive motor 30. A drum pulley 214 is connected to the rear end portion of the internal drum rotating shaft 310 that is axially connected to the center of the rear end portion of the internal drum 300, and the drum pulley 214 is connected to the motor pulley 34 and the belt means 35. Thus, the rotational force of the drive motor 30 is transmitted to the internal drum 300.
[0084]
Note that the rear end portion of the external drum 200 is connected to one end of the external drum rotating shaft 210. Further, the outer drum rotating shaft 210 receives the rotating force of the inner drum rotating shaft 310 by the rotating force transmission device and the first and second rotating shaft interrupting means 401 and 402 having almost the same structure as described in the first embodiment. .
[0085]
In addition, a bearing housing 120a is integrally formed at the center of the rear wall 120 of the tab 100, and an outer peripheral surface of the external drum rotating shaft 210 can be rotatably supported on a front portion and a rear portion of the bearing housing 120a. Thus, a front bearing 61 and a rear bearing 62 are provided.
[0086]
A cylindrical gear box 90 is provided on the rear side of the rear wall 120 of the tab 100 so as to accommodate the rotational force transmission device, and a fastening means such as a bolt is provided at the front portion of the gear box 90. A plunge portion 91 is formed along the outer peripheral surface of the tab 100 so as to be fastened by the flange 93 and coupled to the rear wall 120 of the tab 100.
[0087]
In this case, a plurality of fastening holes 91a are formed in the plunge 91 so that the fastening means 93 can be fastened along the circumferential direction, and the rear wall 120 of the tab 100 is at a position corresponding to the fastening hole 91a. By forming the fixing hole 121, the tab 100 and the gear box 90 can be coupled.
[0088]
The internal drum 300 and the external drum 200 having such a configuration are driven by the rotational force transmitted by the drive motor 30 and the respective pulleys 34 and 214, and the rotational force transmitting means and the first and second rotations. Since the configuration and operation of the shaft interrupting means 401 and 402 are the same as the configuration and operation of the first embodiment described above, detailed description will be omitted.
[0089]
In addition, a number of lifters protruding inward in the radial direction are formed on the inner side surfaces of the inner drum 300 and the outer drum 200 of the drum washing machine of the present invention along the axial direction.
[0090]
This will be described in detail with reference to the drawings showing this.
[0091]
FIG. 6 is a schematic view showing a lifter employed in the drum washing machine of the present invention. As shown in FIG. 6, the lifter 360 formed on the inner peripheral surface of the internal drum 300 is the internal drum 300 during washing. Is rotated in the direction of the arrow table a (for example, clockwise) as shown in the drawing so that the laundry and water flow accommodated therein can be moved forward along the axial direction of the internal drum 300. It is formed in a spiral shape.
[0092]
On the other hand, the lifter 260 formed on the inner peripheral surface of the external drum 200 causes the laundry and water flow stored therein by rotating the external drum 200 in the direction of arrow b (for example, counterclockwise) during washing. It is formed in a spiral shape that moves to the rear side along the axial direction of the external drum 200.
[0093]
The lifter 260 is formed to have a smaller cross section from the front of the drum to the rear, and the lift 360 is formed to have a smaller cross section from the rear to the front of the drum.
[0094]
Also, when the external drum 200 and the internal drum 300 are rotated in opposite directions with respect to each other during washing, the laundry accommodated inside the external drum 200 rises and falls while rotating upward along with the wash water by the lifter 260. As the circulation process repeats, it moves to the internal drum 300 side sequentially.
[0095]
Also, the laundry moved to the inner drum 300 side gradually moves to the outer drum 200 side while repeating the circulation process of rising and falling while rotating upward with the washer 360 together with the washing water.
[0096]
That is, during washing, the laundry and the washing water continuously repeat the circulation process as described above, thereby forming water flows in opposite directions in the washing space formed by the inner drum 300 and the outer drum 200 simultaneously.
[0097]
Accordingly, the entire surface of the laundry causes uniform friction with the inner surfaces of the inner drum 300 and the outer drum 200, and the laundry is washed while coming and going between the inner drum 300 and the outer drum 200 alternately. This eliminates the tangling of the laundry.
[0098]
FIG. 7 is a schematic view showing another modification of the lifter employed in the drum washing machine of the present invention. According to FIG. 7, the lifters 270 and 370 have a triangular cross-sectional shape. Indicates that the cross section is formed so that the cross section decreases from the front to the rear of the drum, and the lift 370 is formed so that the cross section decreases from the rear to the front of the drum.
[0099]
FIG. 8 is a schematic view showing another modification of the lifter employed in the drum washing machine of the present invention. According to FIG. 8, the lifter 280 has the same structure as the lifter as shown in FIGS. Indicates that the cross-section is formed so that the cross section decreases from the front to the rear of the drum, and the lift 380 is formed so that the cross-section decreases from the rear to the front of the drum.
[0100]
Further, the lifters 280 and 380 have a “M” cross-sectional shape, and grooves 280a and 380a are respectively formed so as to partially form a vortex on the radially inner ends of the lifters 280 and 380. Is shown.
[0101]
As described above, the reason why the grooves 280a and 380a are formed at the radially inner ends of the lifters 280 and 380 is that washing is performed by partially forming a vortex in the grooves 280a and 380a at the time of washing. It is designed to increase efficiency.
[0102]
Although a preferred embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various modifications can be made based on the technical idea of the present invention.
Industrial applicability
According to the present invention, a pair of drums, which are rotatable in opposite directions during washing, are provided inside one tub to form a water flow in opposite directions in the laundry space formed by the drums. Since the entire surface uniformly causes friction between the inner drum and the inner surface of the outer drum, the effect of improving the washing performance can be obtained.
[0103]
In addition, there is an effect that the tangling of the laundry can be prevented by washing the laundry while alternately passing the inner drum and the outer drum.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view schematically showing a drum washing machine according to a related art.
FIG. 2 is an enlarged cross-sectional view of “A” portion of FIG.
FIG. 3 is a longitudinal sectional view showing a drum washing machine according to a first embodiment of the present invention.
FIG. 4 is an enlarged view of a main part of FIG.
FIG. 5 is a longitudinal sectional view showing a second embodiment of the drum washing machine according to the present invention.
FIG. 6 is a schematic view showing a lifter employed in the drum washing machine of the present invention.
FIG. 7 is a schematic view showing another modification of the lifter employed in the drum washing machine of the present invention.
FIG. 8 is a schematic view showing another modification of the lifter employed in the drum washing machine of the present invention.

Claims (12)

A tab provided inside the cabinet;
An internal drum and an external drum provided inside the tab, the internal drum and the external drum configured to be rotatable in opposite directions;
Rotational force transmission for transmitting the rotational force for rotating the internal drum from the rotational shaft of the internal drum to the rotational shaft of the external drum, and for rotating the internal drum and the external drum in opposite directions during the first state. Equipment,
Interlocking means for allowing one-way interlocking rotation of the internal drum and the external drum so that the internal drum and the external drum rotate in the same direction during a second state, wherein the first state is Interlocking means different from the second state;
A horizontal drum washing machine comprising:
The external drum is rotatably provided inside the tab,
The internal drum has a smaller diameter and axial length than the external drum, and is rotatably provided inside the external drum.
The inner drum has a rear end portion connected to a rotor of the motor unit by an inner drum rotating shaft,
A stator fixed to the rear end of the rear wall of the tab is located inside the rotor,
The rear end of the external drum is axially connected to the rotation shaft of the external drum, and the rotational force transmission device for transmitting the rotational force of the internal drum rotation shaft to the external drum rotation shaft is transmitted to the external drum rotation shaft. Provided,
The rotational force transmission device is
A gear box fixed to the inside of the gear box housing as a shape in which a front end portion and a rear end portion are opened so that the inner / outer drum rotation shaft can penetrate or be inserted inward;
A sun gear coaxially formed to rotate in conjunction with the rotation of the internal drum rotation shaft;
A number of meteor gears that rotate in response to the rotational force of the sun gear;
A shaft extension portion extended from the rear end portion of the outer drum rotation shaft and having a gear portion formed on the inner peripheral surface thereof so as to mesh with the meteor gear,
A rotation shaft that forms the rotation center of the meteor gear is formed in front of the base, and a carrier having an extension portion positioned between the inner drum rotation shaft and a rear end opening of the gear box at the rear,
With
The horizontal drum washing machine is
A first rotation that interposes the outer peripheral surface of the inner drum rotating shaft and the inner peripheral surface of the outer drum rotating shaft and allows the inner / outer drum rotating shaft to rotate in only one direction and forms the interlocking means. Shaft interrupting means;
Further comprising a second rotary shaft and disconnecting means for permitting rotation of the carrier only in one direction is interposed on the outer peripheral surface of the extended portion of the carrier and the inner peripheral surface of the rear end opening portion of the gear box, horizontal drum Washing machine. The horizontal drum washing machine according to claim 1 , wherein the sun gear is formed integrally with the internal drum rotation shaft. 2. The horizontal drum washing machine according to claim 1 , wherein the meteor gear is formed by coaxially coupling two gears having different radii and numbers of gears. The horizontal drum washing machine according to claim 1 , wherein the carrier rotates in the same direction as the rotation direction of the internal drum with reference to a central axis of the rotation axis of the internal drum as the internal drum rotates. The first, the second rotating shaft and disconnecting means is a one-way bearing, horizontal drum washing machine according to claim 1. 2. The horizontal drum washing machine according to claim 1 , wherein an oilless bearing is provided between an outer peripheral surface of the inner drum rotating shaft and an inner peripheral surface of the extension of the carrier. The horizontal drum washing machine according to claim 6 , further comprising shilling means between an outer peripheral surface of an inner drum rotating shaft on a rear side of the oilless bearing and an inner peripheral surface of the extension portion of the carrier. The first rotating shaft interrupting means allows the inner drum rotating shaft and the outer drum rotating shaft to rotate in opposite directions during washing, and rotates in the same direction as the inner drum rotating shaft during dehydration. the restraining the external drum rotation axis, horizontal drum washing machine according to claim 1 to. Said second rotary shaft and disconnecting means is at the time of washing and restrained for rotation with the gearbox and the carrier and the same directions, to permit rotation in the opposite direction to each other at the time of dehydration, horizontal according to claim 1 Drum washing machine. 2. The horizontal drum washing machine according to claim 1 , wherein a diameter of the shaft extension is larger than a diameter of the outer drum rotation shaft and smaller than a diameter of the gear box. An external drum rotatably provided inside the tab, and an external drum rotation shaft is connected to the rear end of the drum, and the rear end of the external drum rotation shaft is fixed to the rear end of the rear wall of the tab. An external drum that is axially connected to the stator,
An internal drum rotatably provided inside the external drum, and an internal drum rotation shaft is axially connected to a rear end portion thereof, and a rear end portion of the internal drum rotation shaft is axially connected to a rotor of a motor unit With an internal drum,
Extending to the rear side of the front pipe through hole formed in the rear center part of the rear wall of the tab, it is formed integrally with the rear wall to form a hollow space part, and the rear pipe through hole is formed at the rear end part. A formed gearbox housing;
Front and rear bearings respectively provided in the front pipe through hole and the rear through hole and rotatably supported along the outer peripheral surface of the outer drum rotating shaft and the outer peripheral surface of the inner drum rotating shaft;
A gear box fixed to the inside of the gear box housing as a shape in which a front end portion and a rear end portion are opened so that the inner / outer drum rotation shaft can be penetrated or inserted inward;
A sun gear coaxially formed to rotate in conjunction with the rotation of the internal drum rotation shaft;
A number of meteor gears that rotate by receiving the rotational force of the sun gear and a rear end part of the external drum rotating shaft are extended, and a gear part is formed on the inner peripheral surface thereof so as to mesh with the meteor gear. A shaft extension;
A rotating shaft that forms the center of rotation with the meteor gear is formed in front of the base, and an extension portion that is positioned between the inner drum rotating shaft and a rear end opening of the gear box is provided in the rear. Career,
A horizontal drum washing machine comprising: a rotational force transmission device comprising:
The horizontal drum washing machine is
A first rotating shaft interrupting means for allowing interlocking rotation of the inner / external drum rotating shaft in only one side direction interposed on the outer peripheral surface of the inner drum rotating shaft and the inner peripheral surface of the outer drum rotating shaft;
A second rotating shaft interrupting means for allowing interlocking rotation of the gear box and the carrier only in one side direction, interposed on the inner peripheral surface of the rear end opening of the gear box and the outer peripheral surface of the extension of the carrier; Equipped with a horizontal drum washing machine. An external drum rotatably provided inside the tab, and an external drum rotation shaft is connected to the rear end of the drum, and the rear end of the external drum rotation shaft penetrates outside the center of the rear wall of the tab. With an external drum,
A drive motor provided on the lower side of the tab and having a motor pulley coupled to the drive shaft;
An internal drum rotatably provided inside the external drum, wherein an internal drum rotation shaft is axially connected to a rear end portion thereof, and a rear end portion of the internal drum rotation shaft is axially connected to a drum pulley to be a belt An internal drum capable of transmitting the rotational force of the drive motor by means;
The front end and the rear end are opened so that the inner / outer drum rotation shaft penetrates or is inserted inside, and is fastened by fastening means on the rear side of the rear wall of the tab. A gear box having a space portion of
A front-rear bearing provided at a front portion and a rear portion of a bearing housing formed at a central portion of the rear wall of the tab, and rotatably supporting an outer peripheral surface of the external drum rotation shaft;
A sun gear coaxially formed to rotate in conjunction with the rotation of the internal drum rotation shaft;
A number of meteor gears that rotate by being transmitted the rotational force of the sun gear;
A shaft extension portion extended from the rear end portion of the outer drum rotation shaft and having a gear portion formed on the inner peripheral surface thereof so as to mesh with the meteor gear,
A rotation shaft that forms the rotation center of the meteor gear is formed in front of the base, and a carrier having an extension portion positioned between the inner drum rotation shaft and a rear end opening of the gear box at the rear,
A horizontal drum washing machine comprising: a rotational force transmission device comprising:
The horizontal drum washing machine is
A first rotating shaft interrupting means for allowing interlocking rotation of the inner / external drum rotating shaft in only one side direction interposed on the outer peripheral surface of the inner drum rotating shaft and the inner peripheral surface of the outer drum rotating shaft;
Horizontal drum washing, further comprising: a second rotating shaft intermittent means that is interposed on an inner peripheral surface of a rear end opening of the gear box and an outer peripheral surface of the extension portion of the carrier and allows rotation of the carrier only in one direction. Machine.

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