JPH0824483A - Spinning-combined washing machine - Google Patents

Abstract

PURPOSE:To prevent a lint being caught to the bottom cover fixing member at the bottom of a tub at the time of drainage, as well as to improve the spinning efficiency. CONSTITUTION:A screw installing piece 31a is formed on a bottom cover 31, and a pair of ribs 36 and 36 extending to the rear side of the screw installing piece 31a are formed on the rear surface of the bottom cover 31. The opposing interval between the ribs 36 and 36 is set larger than the width size of the screw-installing piece 31a to compose a part of a fixing member 39. A hole 38 for screw to compose a part of the fixing member 39 is provided at the part other than main drain passages 37 extending almost linearly from a water feed recess 29 to the drain port 10 side, in this case, at the intermediate part between the main drain passages 37.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water-saving type washing machine for combined use of dehydration.

[0002]

2. Description of the Related Art Conventionally, in a washing machine for combined use of dehydration,
A water-saving type tank is provided. In this case, the tank has an opening for dehydration only in the upper part, and water is stored only inside the tank and is not stored outside, and washing is performed, and then the tank is rotated to pump water. The dehydration opening is used for dehydration.

In this case, however, in order to increase the dehydration rate, the tank is formed in a tapered shape in which the diameter gradually increases from the lower part to the upper part to improve the pumping performance. Further, a drainage port is formed at the bottom of the tank, and when draining, the drainage port is used.

[0004]

In the case of the conventional one, when the laundry is dehydrated, the laundry is pressed against the inner peripheral surface of the tub by the centrifugal force generated by rotating the tub, so that the water rising up on the inner peripheral surface of the tub. The passage was blocked and dehydration was not performed efficiently. As a solution to this problem, the present applicant has applied for a combined washing machine for dehydration disclosed in Japanese Patent Application No. 6-2507. That is, the inner basket having a cylindrical shape and a large number of water passage holes in the peripheral wall is provided in the vicinity of the inner peripheral surface of the tank, so that a space for pumping water is formed between the tank and the inner basket. The dehydration is done efficiently.

Further, in this dehydrating and washing machine, when the water in the tub is drained, the inner basket and the tub are provided on the lower peripheral wall of the tub so that the water between the tub and the inner basket is well discharged. A water passage concave portion for ensuring a water passage is formed between them, and a space portion is formed at the bottom of the tank from this water passage concave portion to the bottom portion of the tank to form a space between the inner basket and the tank at the drainage port. The bottom cover to be communicated is fixed.

However, in this case, at the time of drainage, when the water flowing from the water flow recess toward the drain port passes through the bottom cover fixing portion at the bottom of the tank, the lint contained in the water is caught on this fixing portion, and There is a risk that lint accumulation will occur and the drainage performance will deteriorate.

The present invention has been made in view of the above circumstances, and an object of the present invention is to form a space for pumping water between a tank and an inner basket, thereby enhancing the dehydration efficiency, and
An object of the present invention is to provide a washing machine for combined use of dehydration, which prevents lint from being caught on the bottom cover fixing portion at the bottom of the tub during drainage, and prevents lint pool from being generated there.

[0008]

[Means for Solving the Problems] A first means is a tank having a dehydration opening at the top and a drain outlet at the bottom,
An inner basket which is provided in the vicinity of the inner peripheral surface of the tank and has a substantially cylindrical shape and has a large number of water passage holes in the peripheral wall, and a water passage formed between the inner basket formed in the lower peripheral wall of the tank and the tank are secured. And a bottom cover that is fixed to the bottom of the tank and forms a space from the water recess to the bottom of the tank so that the space between the inner basket and the tank communicates with the drain port. It is characterized in that a fixing portion for fixing the bottom cover in the tank is provided at a portion where a main drainage path extending substantially linearly from the water passage concave portion to the drainage port side is removed (claim 1). invention).

According to a second means, in the first means, one of a back surface of the bottom cover and a portion of the bottom portion of the tank which faces the back surface of the bottom cover is opposed to the bottom surface by a width equal to or larger than the width of the fixed portion. The present invention is characterized in that a pair of ribs are formed which extend to the back of the fixed portion at intervals and shield the back portion from the water flow recesses (the invention of claim 2).

A third means, in the first means, opposes either the back surface of the bottom cover or a portion of the bottom of the tank facing the back surface of the bottom cover, the width of which is equal to or larger than the width of the fixed portion. The present invention is characterized in that a pair of ribs that extend to the back of the fixed portion at intervals and shield the water passage recess from the back portion are formed, and a ridge portion that fits with the pair of ribs is formed on the other side. It has (the invention of claim 3).

According to a fourth means, in the first means, one of a back surface of the bottom cover and a portion of the bottom of the tank which faces the back surface of the bottom cover is opposed to the fixing means by at least a width dimension of the fixing portion. The present invention is characterized in that a pair of ribs that extend to the back of the fixing portion at intervals and that shield the back-flowing portion from the water flow recess are formed, and that a recessed portion that fits with the pair of ribs is formed on the other. It has (the invention of claim 4).

[0012]

In the first means, an inner basket having a cylindrical shape and a large number of water passage holes in its peripheral wall is provided in the vicinity of the inner peripheral surface of the tank, so that water is pumped between the tank and the inner basket. Since the voids for use are formed, the dehydration can be efficiently performed.

Further, at the time of drainage, the water between the tank and the inner basket passes through the main drainage route extending from the water passage concave portion to the drainage port side almost linearly. In the first means, Since the fixing portion for fixing the bottom cover in the tank is provided in the portion where the main drainage path is removed, water between the tank and the inner basket rarely passes through the fixing portion, and therefore the lint Does not get caught on this fixed part, and therefore lint pool does not occur here and drainage does not deteriorate.

In the second means, one of the back surface of the bottom cover and the portion of the bottom portion of the tank that faces the back surface of the bottom cover is provided with an opposing interval equal to or larger than the width dimension of the fixing portion. Since a pair of ribs that extend to the back of the fixed portion and shield the water passage recess from the back portion are formed, it is possible to more reliably prevent water from the water passage recess from passing through the back portion of the fixed portion. It becomes possible to further eliminate the occurrence of lint accumulation in the fixed portion.

In the third means, one of the back surface of the bottom cover and the portion of the bottom portion of the tank that faces the back surface of the bottom cover is provided with an opposing interval equal to or greater than the width dimension of the fixing portion. Since a pair of ribs extending to the back of the fixed portion and blocking the water passage recess from the back portion is formed, and a ridge portion that fits with the pair of ribs is formed on the other side, the back portion of the fixed portion is formed. It is possible to more reliably prevent the passage of water, and it is even more effective to prevent the occurrence of lint accumulation in the fixed portion. In addition, positioning of the bottom cover during assembly becomes easy.

In the fourth means, one of the back surface of the bottom cover and the portion of the bottom portion of the tank that faces the back surface of the bottom cover is provided with an opposing interval equal to or larger than the width dimension of the fixing portion. Since the pair of ribs extending to the back of the fixed portion and blocking the back-flowing portion from the water-recessed recess are formed, and the recessed line portion that fits with the pair of ribs is formed on the other side, the back portion of the fixed portion is formed. It is possible to more reliably prevent water from flowing through, and it is even more effective in preventing the occurrence of lint accumulation in the fixed portion. In addition, positioning of the bottom cover during assembly becomes easy.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. First, FIG. 3 shows the entire structure of the washing machine for combined use of dehydration, in which a trough 2 is arranged in an outer box 1 and elastically supported by a plurality of (only one is shown) suspension mechanisms 3. A drive mechanism 5 having a motor 4 as a main component is disposed at the outer lower portion of the trough 2, and a dehydration shaft 6 that is rotated in the drive mechanism 5 during dehydration is thrust into the bottom of the trough 2 to The tank mounting board 7 is fixed to the upper end portion.

A tank 8 is provided in the trough 2, and the tank 8 is made of plastic and has a taper shape in which the diameter gradually increases from the lower part to the upper part, and the upper end part thereof is formed. In detail, a large number of holes 9 which are openings for dehydration shown in FIG. 4 are formed in a horizontal row. Further, a drainage port 10 is formed at the center of the bottom of the tank 8, and the drainage port 10 is aligned with the water passage holes 11 formed in the center of the tank mounting board 7 to fit the tank mounting board. The bath 8 is placed on the base 7, and they are fixed thereto by a plurality of screws 12.

As shown in FIG. 4, the water hole 11 of the tank mounting board 7 is provided with an air trap 16 for detecting the water level of the trough 2 via a seal fitting 13, a seal 14, and a conduction cover 15.
Is communicated with the first drain port 17 adjacent to
The first drain port 17 and the air trap 16 are in communication with a drain hose 19 via a drain valve 18 shown in FIG. In addition, a second drain port 20 that directly communicates with the drain hose 19 (omitted) is formed in the trough 2 outside the conduction cover 15 (on the left side in FIG. 2).

The seal fitting 13 and the tank mounting board 7 are sealed by a packing 21 which is an annular sealing member shown in FIGS. That is, the peripheral edge portion of the seal fitting 13 is lowered by one step, and a plurality of, for example, four engaging hole portions 13b are formed in this step portion 13a. On the other hand, the packing 21 is formed with downward engaging projections 21a at four positions, and by fitting the engaging projections 21a into the engaging hole portions 13b, the packing 21 is sealed. The sealing metal fitting 13 is mounted on the tank mounting board 7 in this mounting state. At the time of this attachment, the packing 21 has its engaging projection 21a.
By fitting the seal fitting 13 with the engaging hole portion 13b of the seal fitting 13, the seal fitting 13 can be normally attached without causing a positional deviation, thereby improving the reliability of the seal.

On the other hand, as shown in FIGS. 3 to 6, an inner basket 22 is arranged in the tank 8. The inner basket 22 is made of metal, and by rolling a metal plate such as a stainless steel plate and crimping and joining both ends thereof, the inner diameter is the same from the lower end to the upper end, or the diameter of the upper end is smaller than that of the lower end. 〞It is formed in a cylindrical shape, and a bulging portion 23 that bulges outward from the inside is formed on its peripheral wall, and a large number of water passage holes 24 are formed in the other portion.

With this structure, the inner basket 22 is further adjacent to the inner peripheral surface of the tank 8, and the bulging portion 2 is formed on the inner peripheral surface of the tank 8.
The tip end surface of 3 is abutted to form a gap 25 with the inner peripheral surface of the tank 8. In addition, the upper end of the inner basket 22 is a portion of the tank 8 immediately above the hole 9 in which the balance ring 26 is formed.
At the same time, it is fixed to the tank 8 by being fixed by screws 27, and the lower end is fitted and fixed to a fitting groove 28 formed in the lower portion of the tank 8.

Further, a water passage recess 29 is formed on the lower peripheral wall of the tank 8 to secure a water passage between itself and the inner basket 22, and a water passage hole 30 is formed at the lower end of the inner basket 22. Are formed.

In addition, the inner basket 2 extends from the lower end of the inner basket 22 to the drainage port 10 of the tank 8.
A bottom cover 31 made of, for example, plastic, which is separate from 2, is provided. The bottom cover 31 is fixed to the bottom of the tank 8 by the fixing portion 3
It is fixed by a plurality of screws 32 forming a part of 9, and has a space 33 between the bottom of the tank 8 and the space 33.
The space 25 between the drainage port and the drainage port is communicated with the drainage port 10 of the tank 8. Here, the washing shaft 34, which is rotated at the time of washing, projects from the spin-drying shaft 6 into the bottom of the tub 8.
An agitator 35 is fixed to the upper end portion thereof.

Now, the fixing structure of the bottom cover 31 will be described with reference to FIG. The bottom cover 31 has a fixing portion 3
A screw mounting piece 31a forming a part of 9 is formed. The bottom cover 31 has a back surface as shown in FIG.
As also shown, a pair of ribs 36, 36 extending behind the screw mounting piece 31a are formed. This rib 36,3
The facing interval of 6 is set to be larger than the width dimension of the screw mounting piece 31a forming a part of the fixing portion 39 described above. On the other hand, the bottom of the tank 8 is formed with a screw hole 38 that constitutes a part of a fixing portion 39 for screwing the screw 32. The screw hole 38 is a portion obtained by removing a main drainage path (indicated by an arrow 37 for convenience) that extends substantially linearly from the water passage recess 29 to the drainage port 10 side, in this case, between the main drainage paths 37. It is provided in the middle part. Then, the bottom cover 31 is fixed to the tank 8 by screwing the screw 32 passing through the screw attachment piece 31a into the screw hole 38 at the bottom of the tank 8.

In the case of the above-mentioned structure, since the hole 9 as the dehydration opening exists only in the upper part of the tub 8, the water is stored only in the tub 8 for washing, and the water is washed during the dehydration. Although it is similar to the conventional one that the tank 8 is pumped up and dehydrated from the hole 9 by rotating the tank 8, a substantially cylindrical inner basket 22 is provided inside the tank 8 on the inner peripheral surface of the tank 8. Since the inner basket 22 and the inner peripheral surface of the tank 8 are arranged close to each other, an ascending passage (void portion 25) for dehydration, which comes out from the water passage hole 24 of the inner basket 22, is secured, and thus the inner basket 22 and the inner peripheral surface of the tank 8 are secured. Even when the laundry is pressed against the inner basket 22 by the centrifugal force during the dehydration, the laundry can be smoothly dehydrated without being hindered by the laundry and the dehydration efficiency can be improved.

Further, in this embodiment, when the drain valve 18 is opened during the drainage performed prior to the dehydration, the water in the inner basket 22 and the space between the inner basket 22 and the tank 8 are drained. Water is drainage port 10, conduction cover 1
5. Drain through the drain hose 19. In this case, the water between the inner basket 22 and the tank 8 mainly flows into the drain port 10 from the water passage recess 29 through the space 33 between the bottom cover 31 and the tank 8. Water is the main drainage route 37
It passes through. In this case, the fixing portion 39 for fixing the bottom cover 31 in the tank 8 is connected to the main drainage path 37 described above.
The tank 8 and the inner basket 2
It is very rare that the water between the two passes through the fixing portion 39 (the screw hole 38, the screw mounting piece 31a, and the screw 32), and thus lint is not caught on the fixing portion 39. No lint pool is generated and drainage does not deteriorate.

In particular, according to this embodiment, the back cover 31 extends to the back of the fixed portion 39 at an opposing interval equal to or larger than the width of the fixed portion 39, and extends from the water passage recess 29 to the back of the fixed portion 39. Since the pair of ribs 36, 36 for blocking is formed, the fixing portion 3
It is possible to more reliably prevent water from the water flow recess 29 from passing through the back portion of the nozzle 9, and to further eliminate the occurrence of lint accumulation in the fixed portion. In this case, the ribs 36, 36 may be provided on either one of the bottom surface of the tank 8 and the portion facing the back surface of the bottom cover 31.

Next, FIGS. 9 and 10 show a second embodiment of the present invention. This embodiment differs from the first embodiment in the following points. At the bottom of the tank 8, a bottom cover 31
A ridge portion 41 that fits with the pair of ribs 36, 36 is formed at a portion facing the back surface. According to this embodiment, it is possible to more reliably prevent the water from flowing in the back portion of the fixed portion 39, which is more effective in preventing the lint accumulation from occurring in the fixed portion 39. Moreover, positioning of the bottom cover 31 at the time of assembly becomes easy. In this case, the ribs 36, 3
6 may be formed in the bottom portion of the tank 8 at a portion facing the back surface of the bottom cover 31, and the ridge portion 41 may be formed in the bottom cover 31.

Next, FIGS. 11 and 12 show a third embodiment of the present invention.
This embodiment is different from the first embodiment in the following points. At the bottom of the tank 8, the bottom cover 3
The recessed portion 42 that fits with the pair of ribs 36, 36 is formed at a portion facing the back surface of the first groove. According to this embodiment,
The flow of water in the back part of the fixed part 39 can be more surely prevented, which is more effective in preventing the occurrence of lint accumulation in the fixed part 39. Moreover, positioning of the bottom cover 31 at the time of assembly becomes easy. In this case, the rib 36,
36 may be formed in the bottom portion of the tank 8 at a portion facing the back surface of the bottom cover 31, and the recess 42 may be formed in the bottom cover 31. The bottom cover 31 for the bottom of the tank 8
The fixing means may be an engaging method instead of a screwing method.

[0031]

As is apparent from the above description, the present invention can obtain the following effects. According to the first aspect of the present invention, the inner basket having a cylindrical shape and a large number of water passage holes in the peripheral wall is provided in the vicinity of the inner peripheral surface of the tank, so that water is pumped between the tank and the inner basket. Since the voids are formed, it is possible to improve the dehydration efficiency,
In addition, since the fixing portion for fixing the bottom cover in the tank is provided in the portion where the main drainage path is removed, water between the tank and the inner basket rarely passes through the fixing portion, and therefore lint is prevented. It is possible to prevent the fixed portion from being caught, prevent the occurrence of lint accumulation, and prevent deterioration of drainage performance.

According to the second aspect of the present invention, one of the back surface of the bottom cover and the portion of the bottom of the tank that faces the back surface of the bottom cover is provided with an opposing interval equal to or larger than the width dimension of the fixing portion. By forming a pair of ribs that extend to the back of the fixed portion and shield the back portion from the water passage concave portion, it is possible to more reliably prevent water from flowing from the water passage concave portion to the back portion of the fixed portion. Therefore, the occurrence of lint accumulation in the fixed portion can be further eliminated.

According to the third aspect of the present invention, one of the back surface of the bottom cover and the portion of the bottom of the tank that faces the back surface of the bottom cover is provided with an opposing interval equal to or greater than the width dimension of the fixing portion. A pair of ribs that extend to the back of the fixed portion and shield the back portion from the water passage recesses, and a ridge that fits with the pair of ribs is formed on the other side. It is possible to more reliably prevent water from flowing through the parts, which is more effective in preventing the occurrence of lint accumulation in the fixed parts, and the positioning of the bottom cover during assembly becomes easier.

According to the invention of claim 4, one of the back surface of the bottom cover and the portion of the bottom of the tank facing the back surface of the bottom cover is provided with a facing interval equal to or larger than the width dimension of the fixing portion. Since a pair of ribs are formed to extend to the back of the fixed portion and shield the back portion from the water passage concave portion, and a recessed portion that fits with the pair of ribs is formed on the other side, the back of the fixed portion is formed. It is possible to more reliably prevent water from flowing through the side portion, which is even more effective in preventing the occurrence of lint accumulation in the fixed portion, and the positioning of the bottom cover during assembly becomes easier.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a fixing portion portion showing a first embodiment of the present invention.

FIG. 2 is a vertical sectional front view of a rib portion.

[Fig. 3] Overall vertical side view

FIG. 4 is a vertical sectional side view of the tank portion.

FIG. 5 is a vertical sectional side view of a bottom cover portion.

FIG. 6 is a vertical cross-sectional side view of a bottom cover portion showing a cross section of a portion different from FIG.

FIG. 7 is an exploded perspective view of a seal fitting and a packing.

FIG. 8 is a partial vertical sectional side view of the seal fitting and the packing.

FIG. 9 is a view corresponding to FIG. 1 showing a second embodiment of the present invention.

FIG. 10 is a view corresponding to FIG.

FIG. 11 is a diagram corresponding to FIG. 1 showing a third embodiment of the present invention.

FIG. 12 is a view corresponding to FIG.

[Explanation of symbols]

2 is a trough, 7 is a tank mounting plate, 8 is a tank, 9 is a hole (dehydration opening), 10 is a drain port, 13 is a seal fitting, 13b is an engagement hole portion, 21 is packing, 21a is an engagement protrusion, 22 is an inner basket, 25 is a void, 29 is a water recess, 31 is a bottom cover, 31a is a screw mounting piece, 32 is a screw, 33 is a space, 36 is a rib, 37 is a main drainage path, 38 is for a screw Hole,
Reference numeral 39 indicates a fixed portion, 41 indicates a convex stripe portion, and 42 indicates a concave stripe portion.

Claims (4)

[Claims] 1. A tank having a dehydration opening at the top and a drainage opening at the bottom, and a tank having a substantially cylindrical shape provided near the inner peripheral surface of the tank and having a large number of water passage holes in the peripheral wall. A basket, a water passage recess formed on the lower peripheral wall of the tank to secure a water passage between the inner basket and the tank, and a space portion fixed to the bottom of the tank and extending from the water recess to the bottom of the tank And a bottom cover for communicating a space between the inner basket and the tank with the drainage port, and a fixing portion for fixing the bottom cover in the tank with a straight line extending from the water passage recess to the drainage port side. A washing machine for combined use of dehydration, which is provided in a portion where the main drainage route that extends to the general purpose is removed. 2. The back side of the fixed portion is provided with an opposing distance equal to or larger than a width dimension of the fixed portion on one of a back surface of the bottom cover and a portion of the bottom of the tank facing the back surface of the bottom cover. The washing machine for combined use of dehydration according to claim 1, characterized in that a pair of ribs extending to the back portion and blocking the water passage recesses are formed. 3. The back side of the fixed portion with a facing distance equal to or greater than the width dimension of the fixed portion on either one of the back surface of the bottom cover and the portion of the bottom of the tank facing the back surface of the bottom cover. 2. The washing machine for combined use with dehydration according to claim 1, wherein a pair of ribs extending to the back portion for blocking the water-passing concave portion is formed, and a convex strip portion that fits with the pair of ribs is formed on the other side. . 4. The back side of the fixed portion with a facing distance equal to or greater than the width dimension of the fixed portion on either one of the back surface of the bottom cover and a portion of the bottom of the tank facing the back surface of the bottom cover. 2. A washing machine for combined use of dehydration according to claim 1, wherein a pair of ribs extending to the back portion for blocking the water-passing concave portion are formed, and a concave line portion which is fitted to the pair of ribs is formed on the other side. .