JPH0310948Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention is a fully automatic washing machine that forcibly circulates water to capture lint etc. in the water and complicates the water flow to improve cleaning efficiency. Regarding.

(b) Prior art According to Japanese Patent Publication No. 59-46198, a figure-of-eight flow regulator is configured at the side end of the pump chamber so as to restrict the discharged water, thereby increasing the amount of discharged water. It is shown. However, in order to provide such a configuration in the pump chamber (blade chamber), dimensional control is difficult due to the presence of rotary blades.

On the other hand, as shown in Japanese Utility Model Application Publication No. 55-41191, it is known to form a discharge waterway in the wall of the washing tub and close the die-cut hole with a cover, but this cover is screwed. The assembly work consists of two tasks.

(c) Problems to be solved by the invention The invention aims to simplify the configuration of the discharge channel, the configuration of the flow regulator, and the assembly work.

(d) Means for solving the problem The present invention has a long discharge channel divided into upper and lower halves, and the cover has a tongue piece inserted into the blade chamber, and an upper tongue piece inserted into the blade chamber's locking hole. a downward protrusion that is locked from the
The problem is solved by integrally forming a claw that engages with the engagement hole in the tank wall when the tank wall rotates upward, and a rectifying piece that throttles the discharged water and increases the amount of discharged water.

(e) Effect: That is, since the long discharge channel is divided into two, there is no need to consider the strength of the mold, and the thickness is also reduced, so the molding cycle time is shortened. Then, the rectifying piece is integrally formed on the cover, and the cover is fixed by locking the cover at one end and rotating the other end.

(F) Embodiment To explain based on the drawings below, a dewatering/washing tub 2 which is a combination of injection molded products is arranged in an injection molded outer tank 1, and normally this outer tank 1 is equipped with a hanging rod or other barrier. It is elastically suspended within a machine frame (not shown) by swing means. The washing tub 2 is a swollen bottomed cylindrical body in which a bottomed cylindrical lower tub 3 that expands upward and a cylindrical upper tub 4 that expands downward are joined from above and below. A dehydration shaft 6 is attached and rotated during dehydration. A blade chamber 7 is recessed in the inner bottom of the washing tub 2, and a large-diameter chevron-shaped rotary blade 8 is disposed within this chamber. The blade shaft 9 is inserted into the dehydration shaft 6 in a double shaft structure. 10 is a back blade integrally formed on the back surface of the rotary blade 8; 11 is a drainage hole; and 12 is a diameter-reducing step formed on the lower side wall of the outer tank 1. A drain port (not shown) is provided at the bottom of the outer tank 1. 13
is a top plate that closes the upper opening of the outer tub 1, and has a clothes removal hole 14 in the center.

The lower tank 3 has a joint rib 15 integrally erected all around the upper end, and a circumferential step 16 is formed on the outer peripheral surface of the upper end,
On the other hand, the upper tank 4 has a guide rib 18 on the outside of the lower end 17.
The rib 18 and the lower end 17 constitute a downward groove 19. And groove 1
The joining rib 15 is fitted into the inside of the tank 9, and the upper and lower tanks 3 and 4 are integrated by rotational welding. At this time, a substantially zero distance H ₁ between the lower end 20 of the guide rib 18 and the circumferential step portion 16
As a result, the entire joint rib 15 comes into close contact with the inner surface of the groove 19, thereby making the joint state of the upper and lower tanks 3, 4 strong. The lower end 17 of the upper tank 4 remains in the tank protruding by a dimension D ₁ .

Although no ribs are provided on the outer surface of the upper tank 4,
Predetermined ribs are formed on the outer surface of the lower tank 3.
That is, annular and radial ribs 21 are formed on the outer bottom surface, and ribs 22 formed by vertically connecting several annular strips are formed on the circumferential outer surface.

One side of the washing tub 2 has a bulging wall 23 that bulges inward.
A discharge waterway 24 communicating with the blade chamber 7 is formed between the bulging wall 23 and the tank wall. This discharge waterway 24 discharges water drawn up by the pumping action of the back blade 10 into the tank from above the tank, complicating the water flow, and removing lint etc. by the lint filter 25. belongs to. Therefore, the inlet 26 of the discharge waterway 24 is opened in the peripheral side wall of the blade chamber 7. In the case of the lower tank 3, tapered molds are disposed between the bulging wall 23 and the tank wall from both the upper and lower sides to form the lower half of the discharge waterway 24 divided into upper and lower parts. As shown in the figure, the center of this lower half is offset in the horizontal direction. The inlet 26 is formed at the same time as this molding, and the die hole 27 is closed by a closing cover 28.

As shown in FIG. 3, this cover 28 is a box with an open top and one side, and a tongue piece 29 on one side.
A pair of rectifying pieces 30 are formed so as to extend integrally from both ends of this one side portion to narrow the one side opening and to extend the narrowed state. That is, the dimension between the rectifier pieces 30 and 30 with respect to the width W ₁ of the one side opening
W ₂ is small, and this relationship is maintained for a predetermined distance toward the inside of the cover 28. Thus,
The tongue piece 29 of the cover 28 is inserted into the wing chamber 7 through the inlet 26.
The opening on one side is substantially aligned with the inlet 26, and the downward protrusions 31, 31 of the tongue piece 29 are inserted into the locking hole in the lower part so that the tongue piece 29 is fitted into the lower part of the wing chamber 7. 32, 32, and the other side wall of the cover 28 is fitted into the inner surface of the side wall of the discharge channel 24 near the punching hole 27. Then, a stopper 33 protruding from the outside of the cover 28 is brought into contact with or pressed against the edge of the punching hole 27 from below, and a claw 34 similarly formed on the outer surface of the other side is inserted into the engagement hole 35 of the tank wall. It engages while sliding on the slope of the tank wall. At this time, the elastic forces of the resins of the cover 28, the claws 34, and the tank wall are made to interact with each other.

In the case of upper tank 4, the waterway is waterway 2 of lower tank 3.
4. It is formed with a tapered mold so that it communicates with the lower half. The upper end 36 of the bulging wall 23 of the lower tank 3 and the upper tank 4
Butts against the lower end 37 of the bulging wall 23,
Here, too, a substantially zero interval H ₂ is provided between the two to increase the bonding force between the upper and lower tanks 3 and 4. Also,
This lower end 37 is somewhat thicker, and in addition to the portion where it butts against the upper end 36, there is a portion that remains protruding into the tank by a dimension _D2 . The end of the channel is bent inwardly by a horizontal mold to form an outlet 38. Note that the dimensions D ₁ and D ₂ have a relationship of D ₁ ≧D ₂ .

In the upper tank 4, the entire bulging wall 23 including the outlet 38 is inclined inward to form an inclined surface 39, and a cavity 40 is formed outside the inclined surface 39 above the outlet 38. ing. The upper tank 4 has an integrally formed lower groove body 42 of an annular balancer 41 for sealing liquid at the upper end thereof, and also has appropriate resistance plates 43 erected thereon. The balancer 41 is an upper concave groove body 4 integrally formed with a suitable resistance plate 44.
5 is placed over the lower concave groove body 42 and welded, and a liquid is enclosed and sealed, and the lower concave groove body 42 is positioned so as to protrude inward from the inclined surface 39. An engagement hole 46 communicating with the cavity 40 is provided on the inclined surface 39 slightly above the outlet 38, and a pair of upwardly directed insertion holes 47 are provided on both sides below the outlet 38.

The lint filter 25 is constructed by attaching a bag-like net 49 to a frame body 48.
0,50 into the insertion holes 47, 47, and
By engaging the U-shaped elastic claw 51 on the upper part of 8 with the engagement hole 46, the outlet 38 is covered and installed at an angle. A finger hook 52 is formed on the elastic claw 51, and by pressing this and bending the claw 51, it can be easily removed from the engagement hole 46. On the inner surface of the lower groove body 42 of the balancer 41, a steeply inclined guide surface 53 is formed in the shape of a predetermined width to guide the elastic claw 51 when the claw 51 is engaged.

In addition, if the balancer 41 is lowered, the height of the washing tub 2 can be suppressed and miniaturization becomes possible, but for this purpose, the engagement hole 46 can be formed from the bottom surface of the lower groove body 42. . At this time, only the upper part of the engagement hole 46 of the lower groove body 42 is raised, and
An engagement margin 54 is formed here. This is shown in FIGS. 6 and 7.

The lower end 17 of the upper tank 4, the lower end 20 of the guide rib 18, and the peripheral stepped portion 16 of the lower tank 3 have flat end surfaces (step surfaces) and are parallel to each other in the horizontal direction. Since these vessels are divided into two halves, the vertical dimension of each part is approximately half that of the mold part surface, but this part surface is the butt surface of the molds and has high dimensional accuracy. This is something that can be managed. Therefore, the dimensional relationship between the distance H ₂ and the distance H ₁ is also very accurate. Therefore, the lower tank 3 is fixed using its ribs 21, a rotating jig is fixed on the upper surface of the balancer 41 of the upper tank 4, and the distance H ₁ is visually checked or the guide rib 18 and the circumferential step 16 are fixed with a tool.
The rotary welding work is carried out while measuring the interval Z. Then, while the joint rib 15 and the groove 19 are entirely welded together, by making the interval H ₁ zero or approximately zero, the interval H ₂ can also be made zero or approximately zero.

FIG. 8 shows the arrangement of the respective molds 55 to 59 during molding of the upper tank 4. Reference numeral 59 indicates the core. Here, the vertical dimensions of the molds 55 to 59 that form the discharge waterway 24, which has a total length of over 300 mm, are each reduced to about 150 mm, and the wall thickness of the tank walls, etc. can be reduced to about 5 mm. Further, there is no need to make the strength of the core 59 for forming the water channel particularly high. This results in lower mold costs and shorter molding cycles.

To explain the operation during washing, the laundry moving around on the rotating water flow is prevented from rising along the side wall by the dimensions D ₁ and D ₂ , and is then turned upside down. Therefore, the entire laundry hits the rotary blades 8 evenly, and is washed evenly and at a high cleaning rate. The water forced from the blade chamber 7 to the discharge channel 24 via the inlet 26 returns diagonally downward into the tank from the outlet 38 through the lint filter 25, contributing to the complication of the water flow. Further, the lint filter 25 captures thread waste and the like. Since the interval H ₂ is set to zero or approximately zero, there is no or almost no leakage of water from the water channel 24 into and out of the tank.

When removing the captured lint, etc., the net 49 may be returned as is, but the entire lint filter 25 can also be removed. At this time, insert your finger through the guide surface 53 and pinch the finger hook 52 and the frame 48 to remove the claw 51 from the engagement hole 46, and then
3. When reinstalling, remove the frame 48.
Hold the pins 50, 50 from above and insert them into the holes 4.
7, 47, and push down as it is to guide the claw 51 into the engagement hole 46 while sliding it on the guide surface 53. The lint filter 25 installed in this manner is hidden inside the balancer 41 and does not interfere with the loading and unloading of laundry. Further, the finger hook portion 52 can be visually seen from the guide surface 53 during installation.

During spin-drying, the washing tub 2 rotates in one direction at high speed, but at this time it may vibrate in the lateral direction due to an unbalanced load or the like. However, since the washing tub 2 has a bulging shape, it does not require a large distance from the outer tub 1 to allow vibration. When the washing tub 2 actually vibrates, the upper and lower parts of the washing tub 2 collide almost simultaneously. Conventionally, the upper part of the tub collided, so this was reinforced with ribs, etc., but in this example, the lower groove body 42 is integrally formed with the upper tub 4. Therefore, this type of reinforcing rib was omitted to increase the internal volume of the tank.

(g) Effects of the invention According to the invention, the configuration of the discharge waterway is particularly easy to mold, and the arrangement of the rectifying pieces is also made easier by integrally forming the cover, and furthermore, the cover can be assembled in one step. Can be performed at work. Therefore, manufacturing costs can be reduced and an inexpensive fully automatic washing machine can be provided.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing an example of a fully automatic washing machine according to the present invention, Fig. 2 is a cross-sectional perspective view of the main parts, Fig. 3 is a perspective view of the cover, and Fig. 4 is a cross-section of other main parts. FIG. 5 is a cross-sectional exploded perspective view of another main part, FIG. 6 is a cross-sectional view of main parts of another embodiment, and FIG.
The figure is a view corresponding to FIG. 5 of another embodiment, and FIG. 8 is a sectional view showing the arrangement of the mold. 2...Dewatering/washing tub, 3...Lower tank, 4...Upper tank, 24...Discharge channel, 25...Lint filter, 39...Slanted surface, 53...Guide surface, 27
...Mold-cutting hole, 28...Cover, 29...Language piece,
30... Rectifier piece, 31... Downward projection, 32...
Locking hole, 34...claw, 35...engaging hole.

Claims (1)

[Scope of utility model registration request] The dewatering/washing tank is composed of an upper tank and a lower tank divided into upper and lower parts, and a blade chamber is formed at the bottom of the lower tank to form a pump chamber by the back blade of the rotor, and the upper and lower tanks are connected to the blade chamber. A vertical discharge waterway is integrally formed in the lower tank, and a die-cut hole for forming the discharge waterway of the lower tank is closed by a cover, and the cover includes a tongue piece inserted into the blade chamber;
A downward protrusion that locks into the locking hole in the blade chamber from above, a pawl that engages with the locking hole in the tank wall when rotating upward, and a rectifying piece that throttles the discharged water and increases the amount of discharged water are integrally formed. A fully automatic washing machine with the following features: