JPS6237593Y2 - - Google Patents

Description

[Detailed description of the invention] This invention has a pole installed inside the dehydration tank, which prevents the clothing from forming a film during centrifugal dehydration, and prevents the rinse water from flowing down during water injection rinsing. , relates to a dewatering device that promotes the flow of air during dewatering.

This type of device has a cylindrical receiving part provided at the inner bottom of the centrifugal dewatering tank, into which a pole is inserted and rotated to engage it in the vertical direction. In order to give a feeling of insertion during the insertion operation and to ensure engagement, there is provided a resilient means for pushing the pole up somewhat. The conventional means is to install a spring and a pressing body inside the pole, and when the pole is inserted, the pressing body is applied to the protrusion on the receiving part side to compress the spring. However, in this case, it is difficult to install it inside the pole, and additional parts are required, resulting in high costs.

Therefore, in order to eliminate this drawback, it was considered to integrally form an elastic piece on one side of the pole and the receiving part, but in order to ensure the durability of this elastic piece, there is an elastic piece on the other side after the engagement is completed. It was necessary to form a recess to receive and rest. However, since the elastic piece is formed wide in order to have a certain elasticity,
Once the pole is in the recess, it is difficult to remove it when removing the pole.

The present invention was developed in view of the above-mentioned points, and includes forming a gently tapered surface on the end face of the recess on the receiving side of the elastic piece, and forming a taper along the above-mentioned tapered surface on the wide elastic piece head. . Therefore, when the pole is inserted, the cushion is felt, and when the pole is rotated further, the elastic piece enters the recess with the taper matching the tapered surface. During this time, the elasticity of the elastic piece is gradually weakened, making the rotation operation very smooth, and the elastic piece easily slips out of the recess when rotating in the opposite direction. That is, the elastic piece can be easily moved in and out of the recess. Also, the wear of the elastic piece during this time can be greatly reduced.

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.
A window 12 is opened from the middle part to the upper mating receiving surface 11 at three locations where the 120 degrees) are placed, and a wide elastic piece 13 is integrally erected at the bottom of this window to open the head 14. ... is positioned 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 the taper 14
It forms the

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 caps 5 are inclined downward from the one end 14' to the other end 14'', and extend downward from the final end to form a stopper 16'.

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 the fitting receiving surface 11 is provided between the engagement claws 22 and the blades 21.
The head portion 14 of the elastic piece 13 has a shape that matches the shape of the elastic piece 13.
forms a fitting surface 23 that comes 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 side wall surfaces due to mold cutting. When the pawl 18 is rotated clockwise, the recess 25 receives the head 14 of the elastic piece 13 from the tapered surface 26 to relieve the elasticity of the elastic piece 13. 27, and eventually accommodates the entire head 14.

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, by the time the lower opening of the pawl 18 reaches the bottom surface of the receiving part 9, the heads 14 of the elastic pieces 13 come into elastic contact with the fitting surface 23 of the pawl 18 and apply a pushing up force.
Also, a cushion is provided here for the insertion operation. It should be noted that the elastic pieces 13 are made wide and therefore have strong elasticity.
Further, since the head 14 is pushed open, when viewed from above, it can be seen that it has been inserted by its outward movement. Due to the upward force exerted by the elastic pieces 13, the respective engagement starting ends of the upper surface 24 of the engaging claw and the lower surface 16 of the engaging piece are located on almost the same horizontal line, and the upper surface 24 is lower than the lower surface 16. It will never go down.

Therefore, when the pole 18 is next rotated clockwise, the upper surface 24... will fit into the lower part of the lower surface 16...
engage with each other, but at the same time the upper surface 24... is engaged with the lower surface 16.
Since it slides along the slope of ... up to the stopper surface 16', the pawl 18 is gradually pulled downward as if it were screwing together a screw, and the mating surface 23 is brought into contact with the mating receiving surface. 11 in close contact with 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 recesses 25 while slidingly contacting the tapered surfaces 26 of the recesses 25, and the heads 14 of the elastic pieces 13 elastically contact the fitting surfaces 23 Reduce elasticity. Further, depending on the case, one side end 14' may be placed against the stopper surface 27 to be locked. And the head 14... is the recess 2
5... When entering the inside, the taper 14 from one side end 14' to the other side end 14'' matches the tapered surface 26... in the same direction and contacts elastically, so that it is not sucked into the recess 25... Enter as you like.

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 Kobane 30...
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. 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 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. or,
The lower vanes 20 cause the wind to flow down the pole 18 and infiltrate through the lower clothing.

When removing the pawl 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 engagement 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 dewatering device according to the present invention can provide reliable engagement force and cushioning even if the spring and pressing body in the conventional example are omitted, and at the same time, after the engagement is completed, the elastic piece is inserted into the recess. It can be rested to make it more durable. The elastic piece can be moved in and out of the recess easily, and the pole can be attached and detached smoothly. Furthermore, the rotation of the pole becomes smoother, and the wear of the elastic pieces is reduced.

[Brief explanation of the drawing]

Figure 1 is a sectional view of the dewatering device according to the present invention;
Figures A, B, and C are perspective views, top views, and enlarged perspective views of the main parts of the cap, Figures 3A and B are front and back views of the main parts of the pole, and Figure 4 shows the pole in its inserted state. FIG. 1... Dehydration tank, 5... Cap, 9... Receiving part,
13...Elastic piece, 14...Head, 14...Taper, 15...Engagement piece, 18...Pole, 22...
...Engaging claw, 25...Recess, 26...Tapered surface.

Claims (1)

[Scope of utility model registration request] A receiving part is provided at the inner bottom of the centrifugal dewatering tank, a pole for water supply or ventilation is inserted into this receiving part, and the pole is engaged in the vertical direction when the pole is rotated,
A wide elastic piece is provided on one of the pole and the receiving part, the head of which elastically contacts the other, and a recess is provided on the other side to receive the elastic piece and reduce the elasticity when the pole rotates; A dewatering device characterized in that a gently tapered surface is formed on the end surface of the elastic piece receiving side of the recess, and a taper that substantially coincides with the tapered surface is formed on the head.