JPS6237590Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a washing machine that effectively dehydrates the washing machine by erecting a pole for water supply or ventilation in the dehydration tank and performs so-called water injection dehydration and rinsing, or by blowing air during dehydration.

The poles in this type of washing machine must be firmly fixed to prevent them from falling over during use, so in the past they were completely fixed with screws or the like. However, in consideration of cases where the user does not wish to use the pole, recently it has been designed to prevent the pole from falling and to allow it to be easily removed. For example, an upward protrusion is provided at the center of the inner bottom of the dehydration tank, an engaging piece is partially provided around this protrusion, the lower opening of the pole is placed over the protrusion, and the pole is rotated to engage the engaging claw at the bottom of the pole. is engaged with the lower surface of the engagement piece. Furthermore, a pressing body that is biased downward by a spring is installed in the pole and pressed against the protrusion, and the spring is contracted to elastically apply the engaging claw to the lower surface of the engaging piece to engage the member. I'm letting you do it.

In this case, the state of engagement between the engaging claw and the engaging piece is good because the spring elasticity is used, but the use of the spring and the pressing body and the mounting of these inside the pole make it complicated. Furthermore, in order to cover the protrusion with the pole, a clearance is required between the opening diameter of the lower part of the pole and the outer diameter of the protrusion, which is a step forward in terms of preventing the pole from falling.

In view of the above-mentioned points, the present invention aims to achieve a good engagement state between the engaging claw and the engaging piece without using a spring or the like, and also to prevent the pole from falling by eliminating the above-mentioned clearance. That is, the present invention:
A cylindrical receiving part is provided on the cap fixed to the inner bottom of the dehydration tank, and an upwardly expanding fitting receiving surface is formed on the upper inner peripheral surface of this receiving part, and an engaging piece is partially attached to the lower inner surface of this receiving part. The lower part of the pole is provided with a fitting surface that matches the above-mentioned fitting receiving surface, and the lower surface of the engaging piece is provided with an engaging pawl that is engaged when the pole is rotated, and the lower surface of the engaging piece that engages with each other is provided. In this washing machine, at least one of the upper surfaces of the engaging claws is inclined in the direction of rotation of the pole.

Therefore, when the lower part of the pole is inserted into the receiving part, the fitting surface first faces the fitting receiving surface, and then when the pole is rotated, the upper surface of the engaging claw engages with the lower surface of the engaging piece, and Due to one inclination, the engaging claw side, that is, the pawl gradually descends, and the fitting surface is brought into close contact with the fitting receiving surface while being rotated.

As a result, the engaging claw and the engaging piece always receive force in the mutually engaging direction and are securely engaged, and the fitting receiving surface and the fitting surface are in close contact with each other, thus ensuring reliable engagement. It is possible to achieve the purpose of preventing falling and overturning without using a spring or the like.

Hereinafter, an embodiment will be explained based on the drawings. 1 is a dehydration tank in a two-tub washing machine, a motor rotating shaft 2 is connected to the outer bottom, and a dehydration tank bored in the peripheral wall is connected during centrifugal dehydration by motor drive. Water is dehydrated or exhausted from hole 3. Reference numeral 4 designates a water inlet for supplying water to the upper opening of the dehydration tank 1 as needed, and 5 designates a cap fixed to the inner bottom of the dehydration tank 1, which hides the connecting portion of the rotating shaft 2.

Here, the cap 5 has a disc shape, and a plurality of claw pieces 6 are integrally provided on the outer peripheral edge, and
Screw holes 7, 7 are provided, and the claw pieces 6... are connected to the dehydration tank 1.
After engaging in a proper position on the lower inner surface of the dehydration tank 1, it is fixed to the inner bottom of the dehydration tank 1 using screw holes 7, 7 with screws 8, 8. In addition, the cap 5 has its central part raised high and then lowered downward, and a bottomed cylindrical receiving part 9 is formed in this descending part, and a guide rod 10 is connected to the inner surface of the receiving part at the center of the bottom surface of this receiving part 9. They protrude higher than the receiving portion 9 at intervals. The receiving part 9 has a fitting receiving surface 11 in an upwardly expanding shape, that is, a bulging shape, formed over the entire circumference at the upper part of the inner surface.
120 degrees) are opened from the middle part to the upper fitting receiving surface 11 like a window 12, and an elastic piece 13 of a predetermined width is integrally erected on the lower side of this window 12. The head 14 is located higher than the fitting receiving surface 11.

Although this head 14... has a predetermined thickness,
This thickness gradually becomes thinner from one end 14', and reaches its minimum at the other end 14'', during which time there is a taper of 1.
4″″.

Furthermore, a rectangular engaging piece 15 is integrally provided at the lower part of the inner surface of the receiving part 9 facing the elastic piece 13 from below, and projects toward the center.
The lower surfaces 16 of the members 5 are inclined downward from the one end 14' to the other end 14''.

The top of the fitting receiving surface 11 located on the upper side of the window 12 is projected higher than the window 12 and the head 14, and forms a projecting piece 17.

Reference numeral 18 denotes a water and ventilation pole inserted into the receiving portion 9, and has a cylindrical lower part and a polygonal cylindrical upper part, with an inlet 19 at the upper end and a number of outlets 20 on the peripheral wall. ... are respectively provided, and blades 21 are integrally formed on the outer periphery slightly above the cylindrical lower part.

The pole 18 has square engaging claws 22 integrally protruding outward from the outer periphery of the cylindrical lower part, and a shape matching the fitting receiving surface 11 is provided between the engagement claws 22 and the blades 21. Moreover, a fitting surface 23 is formed with which the heads 14 of the elastic pieces 13 come into elastic contact.

The upper surface 24 of the above-mentioned engagement claw 22... is the above-mentioned engagement piece 1
5... is inclined in the same direction as the lower surface 16..., and when the pole 18 is rotated clockwise, the lower surface 1
6. It enters and engages.

Further, on the fitting surface 23 facing the engaging claws 22 from above, elastic pieces 13 are attached from the pole axis direction.
There is a recess 25 cut into the same width as the upper surface 2 of the engaging claw 22.
4 Tapered surface 2 where the side wall surface on the side with a lower slope is gentle
6, and the side wall surface on the higher slope side is formed as a stopper surface 27. However, depression 2
One of 5... is a flat one with no wall surfaces on both sides due to mold cutting. When the pawl 18 is rotated clockwise, the recesses 25 receive the heads 14 of the elastic pieces 13 from the tapered surfaces 26 and are locked by the stopper surfaces 27, and eventually the heads 14...
It accommodates the whole.

Here, the insertion operation of the pawl 18 will be explained in order. First, the lower opening of the pawl 18 is fitted into the guide rod 10, and the pawl 18 is lowered. Then, the heads 14 of the elastic pieces 13 touch the fitting surface 23 of the pole 18.
It elastically abuts against, and provides cushion for the insertion operation here. Also, here, since the elastic heads 14 are pushed open, when viewed from above, it can be seen that the elastic heads 14 are inserted by the outward movement of the heads 14.

Next, when the pawl 18 is rotated clockwise, the engaging claws 22 enter the lower portions of the engaging pieces 15, and the upper surfaces 24 and the lower surfaces 16 engage with each other. At the same time, the upper surface 24 is sliding along the slope of the lower surface 16, so the pole 18 is gradually pulled downward as if screwing together a screw, and the mating surface 2
3 is brought into close contact with the fitting receiving surface 11 over the entire area.

On the other hand, the heads 14 of the elastic pieces 13 that are in elastic contact with the fitting surface 23 enter the recess 25 while slidingly contacting the tapered surface 26 of the recess 25, and contact the stopper surface 27. One side end 14'... is abutted and locked. When the head 14 enters the recess 25, it tapers 1 from one end 14' to the other end 14''.
4 coincides with the tapered surfaces 26 in the same direction and makes elastic contact with them, so that they are sucked into the recesses 25.

After attaching the pole 18 to the inner bottom of the dehydration tank 1 in this way, the clothes W to be rinsed or dehydrated are
into dehydration tank 1. At this time, clothing W is on window 12.
...If you try to dig in, the protrusion 17... will get in the way.

Reference numeral 28 denotes a flexible presser lid that is fitted into the upper opening of the dehydration tank 1. It has a round hole 29 in the center, is placed on the inlet 19 of the pole 18, and faces it. Forming small blades 30 for blowing air,
A large number of through holes 31 are provided on the outer peripheral surface of the small blades 30.
are formed radially. And 30 small feathers...
The inner and outer peripheries of the through holes 31 are edged high, and the peripheries of the through holes 31 are edged low.

During rinsing, the dehydration tank 1 is rotated continuously or intermittently, and water is fed from the water supply port 4 either continuously or during interruptions in rotation. The garment W is pushed outward by the centrifugal force at the beginning of rotation, and since there is the pole 18, a film of the garment is not formed including the center, and a cavity is created in the center. The water once accumulates on the presser foot cover 28 and then overflows to each through hole 3.
1... flows down almost uniformly and directly enters the upper part of the clothing W, and also flows down along the pole 18 and enters the lower part of the clothing W. Furthermore, if water infiltration conditions are poor or the amount of water being conveyed is large, some water may leak into the pole 18.
It enters from the inlet 19 and is also discharged from the outlet 20. Then, the water passes through the clothes W, dilutes the detergent, and exits from the dehydration holes 3.

When completely dehydrating, stop water supply and return to dehydration tank 1.
rotate continuously. Then, the small blades 30 suck air into the tank through the upper inner and outer lids of the dehydration tank 1. This air flow, that is, the wind, is
It can flow down through the central cavity, and on the other hand, it is subjected to centrifugal force, so it passes through the clothes W and exits from the dehydration holes 3.

At this time, the moisture in the clothing is evaporated.

The wind that exits from the dehydration hole 3 passes through the washing tub, etc., and exits the machine. At this time, since the pole 18 has a polygonal shape, wind is sucked in from the inlet 19 through the round hole 29 by centrifugal force, and is discharged from the outlet 20. In addition, the lower blades 21 cause the wind to flow down along the pole 18 and penetrate into the lower clothing.

In addition, when removing the pole 18, it is rotated counterclockwise, but since the taper 14 of the elastic piece 13 matches the tapered surface 26, the head 14 of the elastic piece 13 smoothly escapes from the recess 25, and the engaging claw 22... upper surface 24
... and the lower surface 16 of the engaging piece 15... are also disengaged. Therefore, if you pull it up here, pole 18
can be removed from the dehydration tank 1.
In addition, when the pole 18 is removed, the protruding pieces 17 protrude higher than the heads 14 of the elastic pieces 13, so when the clothes W are put in and used as is, the clothes W get caught on the elastic pieces 13. This rarely happens, and the protrusions 17 prevent damage to the clothing W and deformation of the elastic pieces 13.

As described above, the washing machine according to the present invention can apply an engaging force to the engaging claw and the engaging piece even if the spring and pressing body in the conventional example are omitted, and at the same time, the fitting surface can be It can be brought into close contact with the receiving surface, and thus reliable engagement and fall prevention can be achieved without the need for a spring or the like.

[Brief explanation of the drawing]

Figure 1 is a sectional view of the washing machine according to the present invention, Figure 2 A, B and C are perspective views of the cap, top view and enlarged perspective views of the main parts, and Figure 3 A and B are front views of the main parts of the pole. The figure, back view, and FIG. 4 are cross-sectional views showing the pole inserted state. 1... Dehydration tank, 5... Cap, 9... Receiving part,
DESCRIPTION OF SYMBOLS 11... Fitting receiving surface, 15... Engaging piece, 16... Lower surface thereof, 18... Pole, 22... Engaging claw, 23
...Mating surface, 24...Top surface.

Claims (1)

[Scope of utility model registration request] A cap having a cylindrical receiving part is fixed to approximately the center of the inner bottom of the centrifugal dewatering tank, and a pole for water supply or ventilation is inserted into the receiving part,
An upwardly expanding fitting receiving surface is formed on the upper inner circumferential surface of the receiving part, and an engaging piece is partially protruded from the lower inner surface of the receiving part, and the lower part of the pole is formed on the fitting receiving surface. An engaging claw that is engaged when the pole rotates is provided on the fitting surface and the lower surface of the engaging piece that are in close contact with each other, and at least one of the lower surface of the engaging piece and the upper surface of the engaging claw that engage with each other is arranged in the direction of rotation of the pole. A washing machine characterized by being tilted.