JP3629868B2 - Drum washing machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a drum type washing machine for washing, rinsing, and dewatering laundry in a drum that is rotatably arranged around a substantially horizontal rotation axis.
[0002]
[Prior art]
Conventionally, this type of drum-type washing machine is configured as shown in FIGS. Hereinafter, the configuration will be described.
[0003]
As shown in FIG. 4, the rotating drum 1 is provided with a large number of water passage holes 2 on the entire outer periphery thereof, and is rotatably disposed in the outer tub 3. One end of the rotary shaft 4 is fixed in a substantially horizontal direction at the rotation center of the rotary drum 1, and a drum pulley 5 is fixed to the other end of the rotary shaft 4. The drive motor 6 is connected to the drum pulley 5 by a belt 7 and rotationally drives the drum 1.
[0004]
The outer tub 3 is suspended from the body 8 by a spring body 9 so as to be swingable, and the vibration isolating damper 10 reduces vibration at the time of dehydration start and supports the vibration isolation so that the vibration at the time of steady dehydration is not transmitted to the body 8. In addition, a weight 11 for reducing vibration during dehydration is provided. The substantially cylindrical packing member 12 connects the opening 14 of the outer tub 3 corresponding to the front opening 13 of the rotating drum 1 and the body front opening 15. A window 16 is provided in the body front opening 15 so as to be opened and closed.
[0005]
The heater 17 heats the washing water in the outer tub 3. The control device 18 controls operations of the drive motor 6 and the heater 17 and sequentially controls a series of processes such as washing, rinsing, and dehydration.
[0006]
As shown in FIG. 5, the packing member 12 has a body side end 19 fitted to the end 8 a bent from the body 8, and is fixed to the body 8 by a spring-like band 20. The outer tub 3 is fitted to the bent end surface 3 a and fixed to the outer tub 3 by the band 22. Further, the packing member 12 has substantially the same thickness, and its length direction is partially folded back and inward to form a substantially annular bulging portion 23.
[0007]
In the above configuration, the operation will be described. When the window 16 is opened and the laundry is put into the rotary drum 1 and the operation is started, the rotary drum 1 is driven by the drive motor 6 at the first rotational speed N1 (about 53 rpm) in the washing process. The laundry in the rotary drum 1 is lifted and dropped onto the water surface. Thus, the washing process proceeds. In the rinsing process, the same operation as in the washing process is performed.
[0008]
In the dehydration process, the rotary drum 1 is rotationally driven at the second rotation speed N2 (about 1000 rpm), and the laundry is centrifugally dehydrated. At this time, if the laundry in the rotating drum 1 is shifted, that is, if an imbalance occurs, the rotating bodies such as the rotating drum 1 and the outer tub 3 vibrate (oscillate). The vibration of the rocking body is attenuated and is not transmitted to the body 8 by the vibration isolating mechanism of the vibration isolating damper 10 during steady dehydration. Further, the opening 14 of the outer tub 3 and the front opening 15 of the body 8 are connected by a substantially cylindrical packing member 12, but the substantially cylindrical packing member 12 bends due to the swinging of the swinging body. Thus, vibration is not transmitted to the body 8 through the substantially cylindrical packing member 12.
[0009]
[Problems to be solved by the invention]
In such a conventional configuration, by rotation of the rotary drum 1, laundry in the rotary drum 1, rotates and moves in the longitudinal direction at the same time, rotates while contacting the packing member 12. At this time, since the laundry hits the folded portion 24 of the packing member 12, the packing member 12 may be worn and torn and water leakage may occur. Also, water accumulated in the bulging portion 23 during operation jumps up and rotates. There was a problem of wetting the laundry in the drum 1.
[0010]
Further, the contact area is large when contacting the folded portion 24 of the packing member 12 and the rib 25 provided at a position facing the folded portion 24, and when the folded portion 24 hits the rib 25 during operation, a large impact sound is generated. Had the problem of generating.
[0011]
SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object thereof is to prevent water leakage due to tearing of a packing member.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, the present invention encloses a rotating drum having a rotating shaft in a substantially horizontal direction by an outer tub, and a swinging body mainly composed of the outer tub is swingably accommodated in a body so that it can be washed and dehydrated. Sometimes the rotating drum is rotated by a drive motor. The opening of the outer tub corresponding to the front opening of the rotating drum and the front opening of the body are connected by a substantially cylindrical packing member, and the packing member partially extends backward and inward in the length direction. A bulging portion that bulges to the outer peripheral side is formed by folding back, and the bulging portion is partially covered at the tip of the inward protruding portion that is folded inward of the packing member so that the radial thickness is in the direction of the rotation axis. A substantially annular barrier portion smaller than the height dimension is integrally formed, and a rib is provided between the front opening of the rotating drum and the substantially annular barrier portion so as to face the substantially annular barrier portion. .
[0013]
Accordingly , when the rotating drum is rotated in the washing process or the rinsing process , the laundry in the rotating drum rotates and moves in the front-rear direction by the rotation of the rotating drum, and rotates while contacting the packing member. The laundry rotates while hitting or getting over the ribs of the packing member, but since the laundry hits the substantially annular barrier portion, the substantially annular barrier portion is worn slightly, but the packing member is not torn, and the packing member It is possible to prevent water leakage due to tearing .
[0014]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 includes a rotating drum having a rotating shaft in a substantially horizontal direction, an outer tub enclosing the rotating drum, a drive motor for rotating the rotating drum during washing and dehydration, and the outer tub. A body housing a main oscillating body in a swingable manner, and a substantially cylindrical packing member connecting between an opening of the outer tub corresponding to the front opening of the rotating drum and the front opening of the body. wherein the packing member forms a bulging portion that bulges to the outer peripheral side by Succoth return folding its lengthwise into partial rear and inward, inwardly projecting folded back inwardly of said packing member At the tip of the part, a substantially annular barrier part that covers the bulging part partially and has a radial thickness smaller than the height dimension in the rotation axis direction is formed integrally with the front opening of the rotary drum and the the substantially annular between Ryakuwa shaped barrier portion Are those having a rib provided so as to face the barrier portion, and moves back and forth direction together with the laundry in the rotary drum is rotated by the rotation of the rotary drum rotates while being in contact with the packing member, at this time, the laundry Since it hits the substantially annular barrier portion of the packing member, the substantially annular barrier portion is slightly worn, but the packing member is not torn, and it is possible to prevent water leakage due to the breaking of the packing member. Further, the substantially annular barrier portion can prevent the water accumulated in the bulging portion formed on the outer peripheral side from being wetted, and can prevent the laundry in the rotating drum from getting wet. Furthermore, the contact area when the substantially annular barrier portion comes into contact with the rib provided at the position facing the barrier portion can be reduced, and the impact sound generated when the barrier portion hits the rib during operation can be reduced. In addition, it is possible to improve the durability of the mold by securing the thickness of the mold.
[0015]
【Example】
An embodiment of the present invention will be described below with reference to FIGS. In addition, the thing of the same structure as a prior art example attaches | subjects the same code | symbol, and abbreviate | omits description.
[0016]
As shown in FIG. 3, the first motor (drive motor) 26 rotates the rotary drum 1 at a first rotational speed N1 (for example, 53 rpm) to perform washing or rinsing. The motor (drive motor) 27 dehydrates the rotary drum 1 by rotating it at a second rotation speed N2 (for example, 1000 rpm). The first motor 26 and the second motor 27 are constituted by induction motors, and are connected to a driven pulley 30 via belts 28 and 29, respectively.
[0017]
The driven pulley 30 has two types of reduction ratios. The first motor 26 is connected to a driven pulley 30a having a large reduction ratio via a belt 28, and the second motor 27 is reduced via a belt 29. It is connected to a driven pulley 30b having a small ratio, and is fixed to the other end of the rotating shaft 4 having one end fixed to the rotation center of the rotating drum 1. The control device 31 controls operations of the heater 17, the first motor 26, the second motor 27, and the like, and sequentially controls a series of processes such as washing, rinsing, and dehydration.
[0018]
The packing member 32 is formed in a substantially cylindrical shape with rubber, and connects the opening 14 of the outer tub 3 corresponding to the front opening 13 of the rotary drum 1 and the body front opening 15. As shown in FIGS. 1 and 2, a substantially annular attachment member 34 is attached to the body side end 33 of the packing member 32, and a screw 35 and a nut 36 are attached to the substantially annular attachment member 34 from the front side of the body 8. The body side end portion 33 of the packing member 32 is sandwiched between the substantially annular mounting member 34 and the inner peripheral surface portion of the body front opening 15.
[0019]
Since the attachment member 34 has a substantially annular shape, the configuration can be simplified. The attachment member 34 is fitted into the packing member 32, and the packing member 32 is sandwiched between the attachment member 34 and the inner peripheral surface of the peripheral front opening 15. Therefore, assembly workability and serviceability can be improved.
[0020]
In addition, the packing member 32 is partially folded back and inward in the length direction to form a bulging portion 37, and the tip of the inward protruding portion has a height greater than the radial thickness A of the packing member 32. A substantially annular barrier portion 38 having a length B is integrally formed, and a rib 39 is provided opposite to the substantially annular barrier portion 38.
[0021]
To explain the operation in the above configuration, the window 16 is opened, the laundry is put into the rotary drum 1, the power switch (not shown) is turned on, and then the start switch (not shown) provided in the control device 31 is turned on. When the operation is started by operating, the water supply valve 40 operates to supply water, and when a predetermined water level is detected by a water level detection means (not shown), the water supply is stopped and the first motor 26 is driven. In the washing process, since the laundry contains water, the revolving drum 1 is rotationally driven by the first motor 26 at the first rotation speed N1 while supplying water, and the laundry in the revolving drum 1 is lifted to the surface of the water. Fall down.
[0022]
At this time, the heater 17 is energized and heated while controlling the washing water in the outer tub 3 at a substantially constant temperature. When the washing process ends, the drain pump 41 operates to drain the washing water in the outer tub 3. Thereafter, in the dewatering process via the rinsing process, the rotary drum 1 is rotationally driven at the second rotational speed N2, and the laundry is dewatered by centrifugation.
[0023]
When the rotating drum 1 is rotated at the first rotation speed N1 in the washing process or the rinsing process, the laundry in the rotating drum 1 rotates and moves in the front-rear direction by the rotation of the rotating drum 1, and contacts the packing member 32. Rotate while. For this reason, the laundry rotates while hitting or getting over the rib 39 of the packing member 32. However, since the laundry hits the substantially annular barrier portion 38, the substantially annular barrier portion 38 is worn slightly, but the packing member 32 is worn. Is prevented from being broken, and it is possible to prevent water leakage due to the breaking of the packing member 32.
[0024]
Further, when the rotating drum 1 is rotated at the second rotation speed N2 in the dehydration process, if the laundry in the rotating drum 1 is in an unbalanced state, the swinging body mainly composed of the outer tub 3 vibrates (swings). The packing member 32 repeats expansion and contraction in a substantially horizontal direction due to expansion and contraction of the bulging portion 37 due to this vibration. At this time, the water accumulated in the bulging portion 37 tends to jump, but the substantially annular barrier portion 38 can prevent the water from jumping up, and the water in the rotating drum 1 is wetted by the jumped water. Can be prevented.
[0025]
In addition, since the substantially annular barrier portion 38 has a radial thickness A smaller than the height dimension B, the packing member 32 repeats expansion and contraction in the substantially horizontal direction by expansion and contraction of the bulging portion 37. An abnormal sound such as an impact sound generated when the barrier portion 38 hits the rib 39 can be reduced.
[0026]
As described above, according to this embodiment, the attachment member 34 that sandwiches the body-side end portion 33 of the substantially cylindrical packing member 32 with the peripheral inner surface portion of the body front opening 15 has a substantially annular shape. 34, the mounting member 34 can be simply fitted into the packing member 32, and the packing member 32 only needs to be sandwiched between the mounting member 34 and the inner peripheral surface of the front opening 15 of the body. Serviceability can be improved.
[0027]
In addition, since the fitting force between the packing member 32 and the inner surface of the window 16 can be adjusted by adjusting the press margin with the packing member 32 by the opening end portion 34a of the mounting member 34, the inner surface of the window 16 and the packing can be adjusted. Water can be prevented from leaking through the gap between the member 32 and the opening / closing force of the window 16 can be adjusted. Moreover, since the substantially annular mounting member 34 and the peripheral edge of the body front opening 15 are fastened and fixed from the front side of the body 8 with screws 35, assembly workability and serviceability can be improved.
[0028]
In this embodiment, the screw 35 and the nut 36 are used to fasten the substantially annular mounting member 34. However, instead of the nut 36, a bar ring is provided on the mounting member 34, and screwing is performed there. Similar effects can be obtained in terms of shape.
[0029]
【The invention's effect】
As described above, according to the first aspect of the present invention, the rotating drum having the rotating shaft in the substantially horizontal direction, the outer tub enclosing the rotating drum, and the rotating drum rotating during washing and dewatering. A drive motor, a body housing a rocking body mainly composed of the outer tank so as to be able to rock, and an opening of the outer tank corresponding to the front opening of the rotating drum and a front opening of the body. with the a substantially cylindrical packing member, the packing member forms a bulging portion that bulges to the outer peripheral side by Succoth return folding its lengthwise into partial rear and inward, said packing member At the tip of the inward projecting portion folded back inward , the bulging portion is partially covered, and a substantially annular barrier portion having a radial thickness smaller than the height dimension in the rotational axis direction is integrally formed , and Front opening of the rotating drum and the substantially annular shape Since a rib so as to face the barrier portion of the substantially annular between the barrier portion, even if the laundry in the rotary drum by the rotation of the rotary drum is moved in the front-rear direction together with the rotation, the laundry Packing Since it hits the substantially annular barrier portion of the member, the substantially annular barrier portion is somewhat worn, but the packing member is not torn, and it is possible to prevent water leakage due to the breaking of the packing member. Further, the substantially annular barrier portion can prevent the water accumulated in the bulging portion formed on the outer peripheral side from being wetted, and can prevent the laundry in the rotating drum from getting wet. Furthermore, the contact area when the substantially annular barrier portion comes into contact with the rib provided at the position facing the barrier portion can be reduced, and the impact sound generated when the barrier portion hits the rib during operation can be reduced. In addition, it is possible to improve the durability of the mold by securing the thickness of the mold.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an essential part of a drum type washing machine according to a first embodiment of the present invention. FIG. 2 is an exploded perspective view of a part of the drum type washing machine. Cross-sectional view of washing machine [Fig. 4] Cross-sectional view of conventional drum-type washing machine [Fig. 5] Enlarged cross-sectional view of essential parts of the drum-type washing machine [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Rotating drum 3 Outer tank 4 Rotating shaft 8 Body 13 Front opening 14 Opening 15 Body front opening 26 First motor (drive motor)
27 Second motor (drive motor)
32 substantially cylindrical packing member 33 body side end 34 substantially annular mounting member

Claims (1)

A rotating drum having a rotating shaft in a substantially horizontal direction, an outer tub enclosing the rotating drum, a drive motor for rotating the rotating drum at the time of washing and dehydration, and a rocking body mainly composed of the outer tub can be swung. And a substantially cylindrical packing member connected between the opening of the outer tub corresponding to the front opening of the rotating drum and the front opening of the body, the packing member having a length thereof the bulging portion that bulges to the outer peripheral side formed by the return folding direction to partially rearwardly and inwardly Succoth, the tip of the inwardly projecting portion folded back inwardly of said packing member, said bulge A substantially annular barrier portion having a radial thickness smaller than the height dimension in the rotational axis direction is integrally formed, and a portion between the front opening portion of the rotating drum and the substantially annular barrier portion is integrally formed. To face the substantially annular barrier portion Drum-type washing machine provided with a drive.

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