JP3290336B2 - Washing machine dehydration tub - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dehydrating tub for a washing machine having a body made of a metal plate.

[0002]

2. Description of the Related Art In recent years, in washing machines, the body of a dehydration tub has been provided with a body made of a metal plate such as a stainless steel plate instead of conventional plastic. This has the advantage that its mechanical strength is high and it can withstand high rotations, so that the dewatering performance can be improved.

In order to manufacture the body of the dewatering tub, a metal plate is bent into a cylindrical shape, and both ends thereof are joined by caulking or welding. The bottom plate is joined at the part and the balance ring is attached at the top edge.

[0004] In the dewatering tank thus manufactured,
A user looking into the tank can see the joint of the trunk, and the appearance is not good. In the case where the body is joined by caulking, the laundry is easily hooked because of the protrusion to the inside of the caulking. On the other hand, in the case where the body is joined by welding, if a tempered temper color occurs at the time of welding, the joint becomes discolored and becomes noticeable. Furthermore,
Rust is liable to occur at the welded joint even if the metal plate is a stainless steel plate, and if the laundry is rubbed on this portion, the rust adheres to the laundry.

[0005] In view of the above, there is provided an apparatus in which a joint portion of a trunk is covered from the inside with a pumping channel forming member. This pumping channel forming member is to form a pumping channel that guides and discharges water in the dewatering tank from the bottom to the balance ring part by the pumping action of the agitating body. Have been.

[0006]

However, the above-mentioned pumping channel forming member is generally made of plastic, and has a different coefficient of thermal expansion from the body of the dewatering tank made of a metal plate. For this reason, the heat shrinkage of the pumping channel forming member especially when it is cooled is larger than that of the body of the dewatering tank, and a gap is generated between the upper balance ring and the lower bottom plate. The laundry is caught in these gaps and is damaged. Further, the pumping channel forming member has an upper part fitted to the balance ring and a lower part fitted to the bottom plate, and has a problem that the fitting property is poor due to the necessity of these fittings.

[0007] The present invention has been made in view of the above-mentioned circumstances, and the object thereof is to make the joint of the trunk invisible.
In addition, the washing dehydration tub not only can prevent the laundry from touching the joint, but can achieve the above-mentioned operation without the laundry being pinched and without deteriorating the assemblability. To provide.

[0008]

In order to achieve the above object, a dehydrating tub of a washing machine according to the present invention comprises a body formed by bending a metal plate into a cylindrical shape and joining both ends thereof. A bottom plate connected to the lower edge of the body, and a balance ring attached to the upper edge of the body , comprising a filter member, wherein the filter member is
The junction of the body portion has covered from inside with a long, the total length of the upper and lower
The gap with a sufficiently smaller size is formed by the balance ring or
It is characterized in that it is left between the bottom plate .

In this case, the joining portion of the body can be made invisible directly by the filter member and can be shielded from the laundry. And between the filter member and the bottom plate, the joint is hidden behind the filter member and cannot be seen. Further, the laundry is stopped by the balance ring and the filter member, and the filter member and the bottom plate, and does not touch the joint between them.

Even if the filter member is thermally contracted, there is a gap between the filter member and the balance ring or between the filter member and the bottom plate. There is nothing. Further, the filter member can be assembled independently of the balance ring and the bottom plate.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. First, FIG. 5 shows the entire structure of a washing machine, especially a washing machine for both dehydration, which has a laundry entrance 3 at the upper part of an outer box 2 containing a dehydration tub 1 and which opens and closes the entrance 3. A top cover 6 having a folded lid 4 and an operation panel 5 is attached. Further, inside the dewatering tank 1, a stirrer 7 is disposed at the bottom, and a filter member 8 is attached to the side.

More specifically, the dewatering tank 1 is formed by bending a metal plate such as a stainless steel plate having a large number of dewatering holes 9 and bulging portions 10 and 11 into a cylindrical shape. The body portion 13 is formed by joining by "sealing" shown by the crimping joint portion 12. The joining of the metal plate of the body 13 may be performed by welding, but caulking is adopted because the equipment is simpler than that. Further, a bottom plate 14 in the shape of a pot-shaped container is screwed on the lower edge of the body 13 where the joining is performed, as shown in FIG.
The balance ring 17 in which, for example, salt water 16 is sealed as a balance weight at the upper edge portion is mounted by a screw 18 with the balance ring 17 positioned inside.

On the other hand, the filter member 8 also comprises a plastic filter base 19 and a plastic filter 21 having a frame 20 swingably mounted on the filter base. 19 is separated from the balance ring 17 by a distance L1 and the bottom plate 14 is moved by a distance L2.
It is attached to the body 13 of the dewatering tank 1 so as to cover the joint (caulking joint) 12 from the inside in a separated non-contact state (see FIG. 2). Here, the filter member 8 is
As is evident, it covers the joint 12 with the entire length of the top and bottom.
And the dimensions L1 and L2 are
It is much smaller than the total length of the top and bottom. Therefore, the filter member 8
Are of dimensions L1, L2 sufficiently smaller than the overall length above and below
Leave a gap between the balance ring 17 and the bottom plate 14
ing.

The mounting of the filter table 19 includes:
As shown in FIGS. 3 and 4, the engaging part 22 formed on the upper part of the filter base 19 is connected to the joining part 12 of the body 13 of the dewatering tank 1.
Engage with the engagement holes 23 formed on both sides, respectively,
Then, a configuration is adopted in which the lower part of the filter base 19 is fixed to the joints 12 on both sides of the body part 13 of the dewatering tub 1 with screws 24, whereby the filter base 19 is attached to the body part of the dewatering tub 1. 13 are screwed on both sides of the joint 12.

As shown in FIG. 2, the filter base 19 has a shape corresponding to the shape of the inner protrusion 12a of the caulking joint 12,
A concave portion 25 is formed, and this is
Is fitted to the inner convex portion 12a of the second member.

Now, in the case of the configuration as described above,
The joint 12 of the body 13 of the dewatering tub 1 is directly invisible by the filter base 19 (the filter member 8) covering the same, and is also shielded from the laundry. At the same time, between the balance ring 17 and the filter base 19, the joint 12 is located behind the viewpoint E (see FIG. 1) of the user looking into the dehydration tank 1 (see blind spot D1). ), And cannot be seen.
4, the joining portion 12 is connected to the filter member 17.
And becomes invisible (blind spot D2). Further, the laundry is stopped by the balance ring 17 and the filter base 19 and between the filter base 19 and the bottom plate 14 at the joints 12 therebetween, so that the laundry is not touched.

Thus, the appearance can be improved, and the laundry does not get caught on the inner convex portion 12a of the caulked joint portion 12. Further, assuming that the joint 12 is welded rather than caulked, even if the joint 12 is discolored, it does not stand out. Rust does not adhere to objects.

And, even if the filter table 19 is thermally contracted,
There are gaps of dimensions L1 and L2 between this and the balance ring 17 or with the bottom plate 14, and these gaps are only widened, and there are gaps between the conventional pumping channel forming member and the balance ring and the bottom plate. The laundry does not get pinched like a small gap created between them. Furthermore, since the filter base 19 can be assembled regardless of the balance ring 17 and the bottom plate 14, unlike the conventional pump ring forming member that had to be fitted to the balance ring and the bottom plate, the filter base 19 has good assemblability. can do. In particular, the filter base 19 is provided with the balance ring 17 and the bottom plate 14 on the body 13.
It can even be attached to the body 13 from the time before the attachment.

In addition, in the above-described configuration, in particular, a concave portion 25 is formed in the filter base 19 in conformity with the shape of the inner convex portion 12a of the caulked joint portion 12. Therefore, the filter table 19 can be attached to the inner peripheral surface of the body section 13 without gaps irrespective of the shape of the inner convex portion 12a of the caulking joint portion 12, so that the filter table 19 and the body section 13 It is possible to prevent the laundry from being caught in between, and to improve the appearance.

Further, the filter base 19 is connected to the body 1 of the dewatering tank 1.
3 is fixed with screws on both sides thereof, so that the filter table 19 also functions as a member for preventing the joint 12 of the body 13 from opening.
Can further increase the mechanical strength. In addition, the filter base 19 does not necessarily need to be in a non-contact state with respect to both the balance ring 17 and the bottom plate 14, and may be in a non-contact state with only one of them.

FIG. 6 shows a second embodiment of the present invention.
However, the concave portion 27 for mounting the filter 21 is
9 is formed to be deeper than the concave portion, thereby increasing the rearward projection to form a convex portion 29.
In this figure, a concave portion 30 is formed in the caulked joint portion 12 of the body portion 13 of the dewatering tub 1 and a convex portion 29 is loosely fitted to the concave portion 30 as shown by a vertical gap G1.

According to this, since the caulked joint portion 12 is hardly opened due to the bending for forming the concave portion 30, the mechanical strength of the body portion 13 can be increased. Further, since the concave portion 27 of the filter base 26 for mounting the filter 21 is formed deeper than the concave portion of the filter base 19, the protrusion of the filter 21 into the dewatering tub 1 can be reduced, and the washing of the laundry to the filter 21 can be reduced. Clogging can be reduced. Further, the concave portion 30 also functions as a positioning portion for mounting the filter base 26, so that the assembling property can be further improved. In this case, the convex portion 29 does not necessarily have the gap G1 on both the upper and lower sides with respect to the concave portion 30, but may have only one of them.

FIGS. 7 and 8 show a third embodiment of the present invention, in which a concave portion 31 is formed in a portion of the caulking joint portion 12 of the body portion 13 of the dewatering tub 1 and the concave portion 31 is formed as described above. In this figure, a thin filter base 32 which replaces the filter base 26 is loosely fitted as shown by a vertical gap G2 and a left and right gap G3.

According to this, similarly to the above, the caulked joint portion 12 is hardly opened due to the bending for forming the concave portion 31, so that the mechanical strength of the body portion 13 can be increased, and the filter base 32 can be used. By entering the recess 31,
The protrusion of the filter 21 into the dewatering tub 1 can be reduced, and the catch of the laundry on the filter 21 can be reduced. In addition, the concave portion 31 also functions as a positioning portion for mounting the filter table 32, so that the assembling property can be further improved. Further, although there are gaps G2 and G3 on the upper and lower sides and on the left and right sides of the filter table 32, these gaps do not open in the circumferential direction around which the laundry rotates, but both open in the radial direction perpendicular to the gap. Objects can be prevented from being pinched. In addition, the upper and lower gaps G2 can be made invisible from the viewpoint of the user obliquely above.

In this case as well, the filter table 32 does not necessarily have the gaps G2, G3 with respect to the recessed portion 31 both vertically and horizontally and may have only one of them.

FIG. 9 shows a fourth embodiment of the present invention.
The inner part of the caulked joint 33 of the body 13 of the dewatering tank 1 is shown as a flat part 33a. According to this, the filter base 19 can be attached to the inner peripheral surface of the body 13 without any gap without forming the recess 25 shown in the first embodiment therein, and Part 13
Between them, the laundry can be prevented from being caught and the appearance can be improved.

FIG. 10 shows a fifth embodiment of the present invention, in which the joint 34 of the body 13 of the dewatering tub 1 is butt-welded. According to this, no weld bead (convex portion) is formed at the joint portion 34 of the body portion 13, so that the filter base 19 is formed with the concave portion 25 shown in the first embodiment in the same manner as described above. The filter base 19 and the body 1 can be attached to the inner peripheral surface of the body 13 without any gap.
3 can prevent the laundry from being pinched, and
Appearance can be improved.

In addition, the present invention is not limited to the embodiment described above and shown in the drawings, but can be implemented with appropriate modifications without departing from the scope of the invention.

[0029]

The dehydrating tub of the washing machine of the present invention is as described above, and has the following effects. According to the dehydration tub of the washing machine of the first aspect, the joining portion of the body formed by bending the metal plate into a cylindrical shape and joining both ends thereof can be made invisible by the filter member and the balance ring. The filter member can prevent the laundry from touching the joint, and the filter member can be provided with a gap between the filter member and the balance ring or the bottom plate, which is sufficiently smaller than the total length of the filter member.
By being attached to the body part, it can be achieved without the laundry being sandwiched between them and without deteriorating the assemblability, improving the appearance, preventing the laundry from being damaged, Stain can be prevented, and further, the assemblability can be improved.

According to the dewatering tub of the washing machine of the second aspect, the filter member can be attached to the inner peripheral surface of the body without any gap regardless of the inner convex shape of the caulked joint of the body, and the filter member can be mounted. The laundry can be prevented from being pinched between the body and the body, and the appearance can be improved.

According to the dewatering tub of the washing machine of the third aspect, the caulked joint of the body can be hardly opened by bending for forming the concave portion, so that the mechanical strength of the body can be increased,
Further, the concave portion can also function as a positioning portion for attaching the filter member, and the assembling property can be further improved.

According to the dewatering tub of the washing machine of the fourth aspect, as described above, the caulked joint portion of the body can be hardly opened by bending for forming the concave portion, so that the mechanical strength of the body can be increased. In addition, since the filter member entirely enters the recessed portion, the protrusion of the filter member into the dewatering tub can be reduced, and the laundry can be less easily caught by the filter member. Also in this case, the concave portion can also function as a positioning portion for attaching the filter member, and the assembling property can be further improved.

According to the dewatering tub of the washing machine of the fifth aspect, the filter member can be attached to the inner peripheral surface of the body without any gap without forming the concave portion of the second aspect. The laundry can be prevented from being caught between the filter member and the body, and the appearance can be improved.

According to the dewatering tub of the washing machine of the sixth aspect, since no weld bead is formed at the joint of the body, the filter member can be replaced with the filter member as described above without forming the concave portion of the second aspect. Since it can be attached to the inner peripheral surface of the body without any gap, the laundry can be prevented from being caught between the filter member and the body, and the appearance can be improved.

According to the dewatering tub of the washing machine of the seventh aspect, the filter member can also function as a member for suppressing the opening of the joint of the body, and the mechanical strength of the body can be further increased. it can.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a main part showing a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of a main part.

FIG. 3 is a perspective view of a dewatering tank body alone with a filter member attached.

FIG. 4 is an enlarged longitudinal sectional side view of a filter member engaging portion along the line AA in FIG. 3;

FIG. 5 is a perspective view of the entire washing machine.

FIG. 6 is a longitudinal sectional side view of a filter member mounting portion of a body of a dewatering tank showing a second embodiment of the present invention.

FIG. 7 is a view corresponding to FIG. 6, showing a third embodiment of the present invention;

FIG. 8 is a diagram corresponding to FIG. 2;

FIG. 9 is a view corresponding to FIG. 2, showing a fourth embodiment of the present invention;

FIG. 10 is a view corresponding to FIG. 2, showing a fifth embodiment of the present invention;

[Explanation of symbols]

1 is a dewatering tank, 8 is a filter member, 12 is a caulked joint (joined part), 12a is an inner convex of the caulked joint, 13 is a trunk, 14 is a bottom plate, 17 is a balance ring, 19 is a filter base, and 21 is a filter base. Filter, 24 is a screw, 25 is a recess, 26
Is a filter base, 29 is a convex portion, 30 and 31 are concave portions, 3
2 is a filter base, 33 is a caulked joint, 33a is a flat part, and 34 is a joint.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) D06F 37/12 D06F 39/10 D06F 39/12

Claims (7)

(57) [Claims] 1. A body formed by bending a metal plate into a cylindrical shape and joining both ends thereof, a bottom plate connected to a lower edge of the body, and an upper edge of the body. Comprising a balance ring and a filter member,
The filter member is not covered from the inside of the junction of the body portion with the upper and lower full length, gap sufficiently small dimensions than the overall length of the upper and lower
A dehydrating tub for a washing machine, wherein a space is left between the balance ring and the bottom plate . 2. The dehydrating tub of a washing machine according to claim 1, wherein the joint portion of the body portion is formed by caulking, and a concave portion is formed in the filter member in accordance with the inner convex shape of the caulked joint portion. 3. A joint portion of a body portion is formed by caulking, and a concave portion is formed in a caulked joint portion of a body portion with respect to a convex portion of a filter member, and these are loosely fitted. Item 2. A dehydrating tub of the washing machine according to Item 1. 4. A joint portion of a body portion is formed by caulking, a concave portion is formed in a portion of the caulked joint portion, and the entire filter member is loosely fitted in the concave portion. The dehydration tub of the washing machine described. 5. The dehydrating tub of a washing machine according to claim 1, wherein the joint portion of the body portion is formed by caulking, and an inner portion of the caulked joint portion is flattened. 6. The dehydration tub of a washing machine according to claim 1, wherein the joint of the body is butt-welded. 7. The dehydrating tub of a washing machine according to claim 1, wherein the filter member is fixedly screwed on both sides thereof across the joint of the body.