CN102454090B - Drum type washing machine - Google Patents

Abstract

The drum type washing machine of the present invention comprises: a washing machine body mounted on a lower base plate; a cover plate arranged at the front lower part of the washing machine body; a tub supported inside the washing machine body; a rotating drum; a drain valve for controlling water discharge; a tub discharge hose provided between the bottom of the tub and the drain valve; a central groove formed by left and right vertical wall portions formed on the lower base plate; A drain hose connected from the drain valve to any one of the discharge port on the left side or the right side of the washing machine body; The limiting beam part. Wherein, the drain hose is arranged between the central groove and the restriction beam.

Description

front load washing machine

field of invention

The present invention relates to the structure of the drain hose of a drum washing machine, and more specifically relates to the method of switching and maintaining the extending direction of the drain hose in multiple directions of the washing machine body, especially in the left and right directions of the washing machine body which is frequently used. constitute.

Background technique

In some existing drum-type washing machines, the installation position of the hose stopper clamping the drain hose can be changed under the washing machine, thereby changing the left and right orientation of the installation position of the drain hose, thereby changing the drainage direction. For an example of such a configuration, see Japanese Patent Laid-Open No. 8-294600 (hereinafter referred to as "Patent Document 1").

Hereinafter, the method of changing the installation position of the drain hose in the conventional washing machine described in Patent Document 1 will be described with reference to FIG. 5 .

Fig. 5 is a schematic diagram illustrating a method of changing the extending direction of a drain hose in a conventional washing machine.

As shown in Figure 5, one end 23a of the drain hose 23 is connected to the bottom of the tub (not shown) contained in the shell 12 of the washing machine, and this end of the drain hose 23 is clamped on the shell installed in the shell. 12 in the clamping portion 25 of the hose stopper 24 at the lower portion of the back panel 12a. At the same time, the other end of the clamping portion 27 of the drain hose 23 can be detachably installed in the installation hole 46 at the bottom of the left and right side panels 12b of the housing 12, and clamped by the hose holder 26. In the example shown in FIG. 5 , the other end of the drain hose 23 is mounted in the mounting hole 46 of the side panel 12 b on the right side of the housing 12 .

Next, the operation of changing the installation position of the drain hose 23 and changing the extending direction of the drain hose 23 will be described with reference to FIG. 5 .

As shown in Figure 5, first the shell 12 of the washing machine is turned down, and one end 23a of the drain hose 23 connected to the bottom of the shell 12 and connected to the bottom of the tub (not shown in the figure) has a hose limit of a predetermined distance Lb. The positioner 24 and the clamping parts 25, 27 in the hose holder 26z provided on the side plate 12b of the casing 12 are opened, so that the drain hose 23 is loosened.

Next, the drain hose 23 is passed through the installation hole 46 on the right side panel 12 b of the housing 12 and pulled into the housing 12 .

Next, the front end of the drain hose 23 is passed through the mounting hole 46 on the left side panel 12b of the casing 12, and pulled out to the left outer side. At this time, the hose holder 26 is also replaced on the mounting hole 46 in the lower part of the left side panel 12b.

Then, connect the hose stopper 24 provided at the left predetermined position La of the end 23a of the drain hose 23 connected to the bottom of the tub (not shown in the figure) and the hose stopper 24 provided on the left side panel 12b of the housing 12. The clamping parts 25, 27 in the hose holder 26 are opened to clamp the drain hose 23, so that the extending direction of the drain hose 23 is changed.

In addition, some drum-type washing machines use a retainer that bends and holds the stretchable drain hose in an L-shape and rotates the extending direction of the drain hose, which can simplify the operation. For one example thereof, see Japanese Patent Laid-Open No. 10-28799 (hereinafter referred to as "Patent Document 2").

Next, the method of changing the installation structure and the installation position of the drain hose in this patent document 2 will be described with reference to FIG. 6 .

Fig. 6 is a schematic diagram for explaining a method of changing the extending direction of a drain hose in a conventional washing machine.

First, the installation structure of the drain hose of the washing machine in patent document 2 is demonstrated.

As shown in FIG. 6, one end of the telescopic hose body 1 used as a drain hose is connected and fixed to a drain valve 34, and the first telescopic portion 4 of the hose body 1 is basically bent in a bending jig 10 to Receive after the L font, and the connecting port 7 of its pipe end is fixed on the washing machine body (not shown in the figure).

The following describes how to change the installation position of the drain hose to change the direction in which the drain hose protrudes.

First, as shown in FIG. 6 , the washing machine is turned sideways, and the connection port 7 of the hose body 1 is removed toward the inside (left side in the figure) on the bottom surface of the washing machine body.

Next, change the extension direction of the drain valve 34 relative to the axis (dot-dash line in FIG. 6 ), specifically, when viewed from the B direction in FIG. . At this time, the first bellows 4 in the hose body 1 accommodated in the bending jig 10 undergoes expansion and contraction deformation corresponding to the clockwise (rightward) bending.

Next, the ring-shaped sliding portion 5 of the hose body 1 is rotated clockwise (rightward) with respect to the ring-shaped sliding portion 14 of the bending jig 10 with the extension direction of the hose body 1 as a central axis.

In this way, the protruding direction of the hose body 1 is changed from the right side to the left side as shown in FIG. 6 .

In short, without removing the hose body 1 from the drain valve 34 , as long as the connection port 7 is removed to the inside and the bending jig 10 is rotated, the extension direction of the hose body 1 can be changed through simple operations.

However, in the structure disclosed in Patent Document 1, the hose stopper 24 is used as a special component to fix the drain hose 23. When changing the direction, it is necessary to change the position of the hose stopper 24 at the bottom after the housing 12 is turned sideways. position to achieve. At this time, if the washing machine is light in weight, there are relatively few obstacles in the work of changing the extending direction of the drain hose. However, in the case of a heavy (large) drum-type washing machine, it is usually difficult to simply turn the washing machine down and change the direction in which the drain hose protrudes.

In addition, after adopting the structure in Patent Document 1, since other components such as the hose stopper 24 and the hose closure 26 are used, once the drain hose 23 is pulled into the inside of the washing machine and the extension direction is changed, it is necessary to Carry out clamping work again. In this way, the work of changing the extending direction of the drain hose 23 becomes complicated. Moreover, if there is a deviation in the clamping position of the drain hose 23, the load will be applied to the drain hose 23 due to the vibration of the washing machine, which will affect the long-term reliability of the product. Specifically, since the drain hose 23 is connected to a hose holder or a connection port provided on the washing machine casing or the like from a vibrating part such as a tub, so as to discharge the washing water out of the body of the washing machine, if If the dimensions of the slack portion of the drain hose dedicated to absorbing vibrations are changed due to changes in the direction in which the drain hose protrudes, vibrations may not be absorbed, which may affect the reliability of the drain hose. adverse effects.

On the other hand, the above-mentioned Patent Document 2 discloses a configuration in which the extension direction of the drain hose is changed by rotating the bending jig 10. Since operations such as pulling out and pushing in the drain hose are not necessary, the patent document 1 in Patent Document 1 Part of the problem can be resolved. But because still need the washing machine to fall sideways, make the bending clamp 10 of washing machine bottom surface rotate 180 degrees, for very heavy drum type washing machine, the problem of the operation difficulty of changing the extension direction of drain hose is not solved.

In addition, in the structure shown in the above-mentioned patent document 2, since the drain valve 34 connected to the drain hose is arranged at the bottom of the tub, as in the patent document 1, the vibration of the washing machine may also affect the drain hose. Reliability is adversely affected.

Also, since the hose stopper 24 and the hose holder 26 are used in Patent Document 1, and additional components such as the bending clamp 10 are used in Patent Document 2 to hold the drain hose, the number of parts increases, thereby It will also increase costs.

Contents of the invention

The drum type washing machine of the present invention comprises: a washing machine body mounted on a lower base plate; a cover plate arranged at the front lower part of the washing machine body; a tub supported inside the washing machine body; a rotating drum; a drain valve for controlling drainage; a tub discharge hose provided between the bottom of the tub and the drain valve; a central groove formed by left and right vertical walls formed on the lower base plate; A drain hose connected from the drain valve to any one of the discharge port on the left side or the right side of the washing machine body; The limiting beam part. Wherein, the drain hose is disposed between the central groove and the restriction beam.

In this way, for a heavy product like a front-loading washing machine, it is not necessary to turn the washing machine down to operate, and the installation position of the drain hose can be changed from the front of the washing machine body in an upright state, and the drainage direction can be changed (for example, switching from left to right) . In this way, not only can the work time for changing the extending direction of the drain hose be shortened, but also work efficiency can be improved.

According to the present invention, it is possible to realize a drum type washing machine capable of changing the extending direction of the drain hose and holding the drain hose with a simple structure and reliable operation.

Description of drawings

Fig. 1 is a perspective view of a drum-type washing machine in an embodiment of the present invention.

Fig. 2 is a partial oblique view of the drum-type washing machine in this embodiment when the front cover is opened.

Fig. 3 is a partial longitudinal sectional view of the drum type washing machine in this embodiment.

Fig. 4 is a partial plan view of a lower base plate of the drum type washing machine of this embodiment.

Fig. 5 is an explanatory diagram of a method for changing the extension direction of a drain hose of a conventional washing machine.

Fig. 6 is another explanatory diagram of a method for changing the extending direction of a drain hose in a conventional washing machine.

specific embodiment

Embodiments of the present invention will be described below in conjunction with the accompanying drawings. At the same time, it should be pointed out that the present invention is not limited to this embodiment.

(Example)

FIG. 1 is an oblique view of the appearance of a drum-type washing machine according to an embodiment of the present invention, and a part of it is a perspective view.

FIG. 1 shows the drum type washing machine in this embodiment. Its structure is that a door body 53 that can be opened and closed is provided at the center of the front panel 52 of the washing machine body 51 , and the washing machine body 51 is arranged on the lower base plate 54 . Between the front panel 52 and the lower base plate 54, a front cover 55 that can be opened/closed toward the front of the washing machine body 51 is provided. A right side discharge port 56 is provided on the right side of the lower base plate 54 , and an external drain connection hose 57 is partially connected to the discharge port 56 .

In addition, a left discharge port 58 is provided on the left side of the lower substrate 54 in FIG. 1 .

The internal structure of the drum washing machine in this embodiment when the front cover is opened will be described in detail below with reference to FIG. 2 .

Fig. 2 is a perspective view of the partial appearance of the drum-type washing machine in the above embodiment when the front cover is opened. In addition, FIG. 2 shows an example in which a drain hose 60 is disposed between the drain valve 59 and the right side discharge port 56 inside the body, and drains water from the right side.

As shown in Figure 2, after the front cover 55 of the drum type washing machine is opened, it can be seen that a front opening 61 is provided at the bottom of the front panel 52, through which the internal drain valve 59 and the drain valve 59 can be connected. The drainage hose 60 etc. that etc. are connected.

And, through the front opening 61, it is possible to change the extending direction of the drain hose 60 from the front panel 52 side of the washing machine body.

Next, the structure around the drain hose of the drum-type washing machine in this embodiment will be described with reference to FIG. 3 .

Fig. 3 is a partial longitudinal sectional view of the drum-type washing machine in this embodiment.

As shown in FIG. 3 , the washing machine body 51 of the front-loading washing machine is provided with a rotating drum 62 , and the laundry to be washed can be put into the rotating drum 62 by opening the door body 53 . A motor 83 is provided on the outer bottom of the tub 63 , and the rotary drum 62 is rotatably supported in the tub 63 via the rotation shaft of the motor 83 . The tub 63 is vibration-proof supported by a spring body 67, a damper 66, and the like so as to be free to swing.

At the bottom of the tub 63, a drain tube 64 made of a material such as rubber material is provided. The drain tube 64 is connected to one end of a flexible and accordion-shaped tub drain hose 65 , and the other end of the tub drain hose 65 is connected to a drain valve 59 and a foreign matter filter 68 arranged above the lower base plate 54 . Here, the drain valve 59 is a switch for opening and closing the drain channel of the wash water in the tub 63, and the foreign matter filter 68 is used to remove foreign matter contained in the drain water during the drain operation.

Thus, the drain valve 59 and the foreign matter filter 68 are connected downstream of the tub drain hose 65 , and the stretchable and bendable drain hose 60 is connected downstream of the drain valve 59 and the foreign matter filter 68 . The downstream side of the drain hose 60 is provided to be coupled with the right side discharge port 56 of the lower base plate 54 .

Furthermore, the drain hose 60 has a bellows shape and is made of, for example, rubber-added polyethylene or a radial resin material such as polypropylene. Thus, the drain hose 60 can be bent.

When draining the washing water inside the tub 63, the drain valve 59 is opened, and the washing water inside the tub 63 first flows through the tub drain hose 65 on the upstream side, and then flows through the drain hose 59 and the foreign matter filter 68. , and then discharged from the drain hose 60 on the downstream side through the right drain outlet 60 .

At this time, if the dehydration operation is performed, the tub 63 will vibrate strongly due to the unbalanced distribution of the clothes in the rotary drum 62, but such vibration will be absorbed by the freely curved tub drain hose 65 that can follow. . In this way, the drain valve 59, the foreign matter filter 68, and the drain hose 60 on the downstream side can be prevented from being directly affected by the vibration of the tub or the like.

Furthermore, as shown in FIG. 3 , a beam-shaped restricting beam portion 76 (described later in FIG. 4 ) is provided between a pair of vertical wall portions of the central groove portion to restrict upward movement of the drain hose 60 . In this way, the restricting beam portion 76 restricts the upward movement of the drain hose 60 when it is slack, thereby preventing the tub drain hose 65 from colliding with the tub drain hose 65 when the tub 63 etc. vibrates.

In addition, as shown in FIG. 3, the interior of the washing machine body 51 is also provided with protrusions 77a, 77b for pressing the hose. With such a structure, not only can the size of the downstream side of the drain hose be kept stable when the extension direction is changed, but also the positioning of the drain hose 60 can be performed (described later in FIG. 4 ).

The connection structure of the drain hose 60 will be described below with reference to FIG. 4 .

Fig. 4 is a partial plan view of the lower base plate of the drum-type washing machine in this embodiment.

As shown in Figure 4, the drain hose 60 is at first connected to the connection portion 69 of the drain valve 59 and the foreign matter filter 68 through a bend that forms the first arc bend 70; secondly, the drain hose 60 is formed from The curved portion of the second circular arc curved portion 72 on the drain hose 60 , where the center line A-A in FIG. 4 is greatly bent to the right, is connected to the hose joint 73 mounted on the right discharge port 56 . In addition, the first arc bending portion 70 and the second arc bending portion 72 of the drain hose 60 are connected to each other by a substantially straight portion (including a straight portion) 71 formed along the center line A-A in the planar direction of the front-loading washing machine. In addition, the drain hose 60 and the hose joint 73 are integrally formed by, for example, bonding or fitting, and constitute one unit.

The straight portion 71 of the drain hose 60 is arranged to pass through the inside of the central groove portion 74 formed by the left and right vertical wall portions 75a, 75b integrally formed with the lower basic plate 54. The groove portion 74 is preferably provided at the center of the washing machine body, substantially equidistant (including equidistant) from the right side discharge port 56 and the left side discharge port 58 provided on the lower base plate 54 of the washing machine body 51 . In this way, for example, the shape of the bent portion forming the second arc-shaped bent portion 72 does not change depending on the installation direction, and the reliability of the drain hose 60 can be prevented from being lowered regardless of the installation direction. Furthermore, if the reliability of the drain hose 60 is not affected, the central groove 74 does not necessarily have to be provided at an equal distance from the right discharge port 56 and the left discharge port 58, as long as it is provided at a position where the curved shape can be maintained. Just go up.

Above the drain hose 60 shown in FIG. 4, between the left and right vertical wall portions 75a, 75b constituting the central groove portion 74, a beam-shaped restricting beam portion 76 is provided integrally therewith. In this way, the drain hose 60 can be arranged to pass between the central groove portion 74 and the restricting beam portion 76, so that the substantially straight portion 71 of the drain hose 60 can be prevented from going upward from the central groove portion 74 (tub 63 side) out.

On the upstream side of the drain hose 60 (on the side of the drain valve 59 ) with respect to the restricting beam portion 76 provided on the left and right vertical wall portions 75a, 75b, there are provided beams protruding from and forming with the left and right vertical wall portions 75a, 75b. Integral hose pressing protrusions 77a, 77b. Furthermore, the gap portion 78 formed at the tips of the pair of hose protrusions 77a, 77b is set to be slightly smaller than the outer diameter of the drain hose 60 .

In this way, as long as the outer diameter width of the radial drain hose 60 is slightly flattened, the drain hose 60 can be pushed into the gap portion 78 from above to realize positioning. The drain hose 60 can be fixed to the center line A-A portion of the lower base plate 54 by the bottom surface of the central groove portion 74 and the hose pressing protrusions 77a, 77b. As a result, the length dimension from the gap portion 78 to the second arc bending portion 72 on the downstream side of the drain hose 60 and thereafter can be accurately set.

In addition, there is a hose joint 73 connected integrally at the front end of the second arc bending portion 72 of the drain hose 60 on the downstream side, and the hose joint 73 is installed on the right side row on the right side 80 of the lower base plate 54 . One side of the inner surface of the outlet 56 . Furthermore, the hose joint 73 is also connected to the external drain connection hose 57 via the discharge cylinder 81 provided outside. At this time, the hose joint 73 is fixed to the vicinity of the right discharge port 56 on the right side 80 of the lower base plate 54 by the small screw 79 screwed in from the right outer side of the washing machine body 51 .

Therefore, the hose connector 73 can be easily removed from the inside of the washing machine body 51 by loosening the small screw 79 from the outside.

Next, the operation of changing the mounting position of the drain hose and changing the extending direction of the drain hose will be described with reference to FIG. 4 . In addition, what was demonstrated in FIG. 4 is changing the extension direction of the drain hose from the state set to the right side to the left side.

First, as illustrated in FIG. 2 , the front cover 55 is opened forward (downward in FIG. 4 ) in the upright state of the washing machine body 51 .

Next, loosen the small screw 79 from the right outer side of the washing machine body 51, and remove the hose connector 73.

Next, the drain hose 60 and the hose connector 73 are pulled into the inside of the washing machine body 51 from the front of the washing machine body 51 .

Next, from the opening of the opened front cover 55, utilize the radius of the drain hose 60 to bend the second arc bending portion 72 to the left over 180 degrees to form a third circle as shown by the dotted line in FIG. The curved portion 82 is curved, and the hose joint 73 is mounted to the left discharge port 58 on the left side 84 of the lower base plate 54 from the inside. Then, from the left outside of the washing machine body 51, the hose connector 73 is fixed near the discharge port 58 on the left side with a small screw 79. In this way, the extension direction of the drain hose 60 can be easily changed in the upright state without turning the washing machine body 51 down.

The function and effect of each component in the front-loading washing machine having the above-mentioned structure will be described below.

First, in the washing machine body of the front-loading washing machine mounted on the lower substrate, by opening the openable front cover 55 provided at the front lower part of the washing machine body, the washing machine can be faced from the front without turning the washing machine sideways. Change the installation position of the internal piping. In addition, the drain hose for changing the direction of washing water and the like can be separated from the vibrating tub by the tub drain hose 65, so that the drum washing machine is not directly affected by the vibration of the tub during operation. As a result, even if there is a slight error in the installation operation of the drain hose 60, for example, the vibration of the tub will not be transmitted to the drain hose 60, so that the reliability of the drain hose 60 is rarely greatly affected. .

In addition, the drain hose 60 is positioned and held by the central groove 74 integrally formed along the center line A-A of the lower substrate 54 and the hose pressing protrusions 77a, 77b protruding from the left and right, so that the drain hose 60 The length after the second arc bending portion 72 on the downstream side can be accurately set.

In addition, the drain hose 60 can be prevented from coming out of the central groove 74 upward (in the direction of the tub) by the beam-shaped restricting beam 76 provided on the upper surface of the central groove 74 . In this way, the operation of changing the extension direction of the drain hose 60 to the left and right can be performed more stably.

In addition, the hose joint 73 located at the most downstream side of the drain hose 60 is mounted on the right side discharge port or the left side discharge port of the lower base plate 54 from the inside side of the washing machine body 51, and is then screwed from the outside with a small screw 79. The connection is secured to the lower substrate 54 . In this way, when changing the extending direction of the drain hose 60 left and right, only the screw 79 needs to be unscrewed and screwed on, and the installation and disassembly operation of the hose connector 73 on the drain hose 60 becomes very simple.

As described above, according to this embodiment, the position of the drain hose can be more determined and maintained, thereby preventing operational deviation due to changing the direction in which the drain hose 60 protrudes. tubes, etc.) come into contact. In this way, even if the extending direction of the drain hose is changed, the reliability of the drain hose can be ensured for a long time, and the stability of the drain structure can also be improved.

In addition, after adopting this embodiment, even if the weight of the machine body is very heavy like a drum type washing machine, the installation position of the drain hose can be changed from the front of the washing machine body in the state of standing upright without turning the washing machine down, and the drainage can be changed. direction (for example, left-right direction). In this way, not only the operation time for changing the extending direction of the drain hose can be shortened, but also the working efficiency can be improved.

In addition, although the configuration in which the position of the drain hose is determined by using a pair of hose pressing protrusions has been described in this embodiment, the present invention is not limited to this embodiment. For example, it is also possible to form a hose pressing protrusion with a semicircular recess on the lower substrate, and then press the drain hose into the recess to position it.

In this embodiment, although the example of the center groove part comprised by the left and right vertical wall parts was demonstrated, this invention is not limited to this embodiment, either. For example, a wall portion facing upward may be provided with respect to the lower substrate, and a pair of beam-shaped restriction beam portions may be provided on the left and right sides of the wall portion. In short, the expressions such as left, right, up and down, etc. are only expressed in an easy-to-understand manner, and the positional relationship does not need to be particularly limited as long as the structure can realize the same functions as the central groove part, the restraining beam part and the hose pressing part.

In addition, in this embodiment, the operability is fully considered, and the front cover provided on the front of the washing machine has been described as an example, but obviously, the cover provided on the back of the washing machine is of course also possible. If it is set in this way, it can not only improve the appearance of the washing machine, but also prevent unintentional opening by the user.

The drum-type washing machine of the present invention comprises: a washing machine body mounted on a lower base plate; a cover plate arranged at the front lower part of the washing machine body; a bucket supported inside the washing machine body; a rotating drum supported by a shaft inside the bucket; and a drain valve for controlling drainage; The tub discharge hose installed between the bottom of the tub and the drain valve; the central groove formed by the left and right vertical walls formed on the lower base plate, from the drain valve to either the left or right discharge port of the washing machine body The drain hose connected to the outlet; the beam restricting beam structure provided on the left and right vertical walls of the central groove. The structure in which the drain hose is arranged between the central groove and the restriction beam.

In this way, even if the weight of the machine body is very heavy like that of the front-loading washing machine, the installation position of the drain hose can be changed from the front of the washing machine body, and the drainage direction can be changed (for example, switching from left to right) without turning the washing machine down. ). In this way, not only the time for changing the direction of extension of the drain hose can be shortened, but also the working efficiency can be improved.

In addition, in the present invention, protrusions are provided on the left and right vertical walls of the drain hose on the upstream side of the regulatory beam to hold the drain hose, so that the drain hose can be fixed more reliably. position in the length direction. As a result, it is possible to prevent operational deviation when changing the direction in which the drainage of the drain hose protrudes, and it is possible to stably change the direction in which the drainage hose protrudes.

Also, the present invention includes at least one pair of protrusion structures for pressing the hose, and a gap smaller than the outer diameter of the drain hose is provided between the pair of hose pressing protrusions, so that the drainage softness can be determined more reliably. The position of the tube along its length.

Also, the drain hose of the tub in the present invention has a bellows shape that can be stretched and bent, so that the vibration of the tub transmitted to the drain hose can be absorbed.

Also, the drain hose of the present invention has a bendable portion at least on the downstream side of the central groove, so that the installation position of the drain hose can be easily changed.

Also, the central groove in the present invention is arranged in the center of the washing machine body equidistant from the left side discharge port and the right side discharge port on the washing machine body. In this way, the extension direction can be easily changed without adjusting the length of the drain hose on the downstream side after the central groove.

Claims (5)

1. A drum type washing machine, characterized in that it comprises: The body of the washing machine mounted on the lower substrate; The cover plate configured on the front lower part of the washing machine body; a bucket supported inside the washing machine body; A rotating drum supported in the bucket through a rotating shaft; Drain valve to control drainage; a tub drain hose disposed between the bottom of the tub and the drain valve; a central groove portion formed by left and right vertical wall portions formed on the lower substrate; a drain hose connected from the drain valve to either the left or right drain of the washing machine body; and a beam-shaped restricting beam portion provided on the left and right vertical wall portions of the central groove portion, Wherein, the drainage hose is arranged between the central groove and the restriction beam, On the upstream side of the drain hose relative to the restricting beam, the left and right vertical wall portions are provided with hose pressing protrusions for holding the drain hose in place. the 2. The drum washing machine according to claim 1, characterized in that said hose pressing protrusions are at least a pair, and between said pair of hose pressing protrusions, there is an outer wall that is larger than said drain hose. A gap with a slightly smaller diameter. the 3. The drum washing machine according to claim 1, characterized in that the drain hose of the tub is in the shape of a bellows. the 4. The drum washing machine according to claim 1, wherein the drain hose has a bendable portion at least downstream of the central groove portion. the 5. The drum washing machine according to claim 1, characterized in that: the central groove is arranged in the center of the washing machine body equidistant from the left discharge port and the right discharge port of the washing machine body . the

Images