JPH0241993B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a single-tank dehydrating washing machine in which washing and dehydrating are performed using a washing and dehydrating tank equipped with a pulsator at the bottom, and particularly to a water injection device that injects water into the washing and dehydrating tank. It is something.

Water injection device (first
23 in the figure) is located above the upper opening of the washing/dehydration tank 6 as shown in Fig. 1, and the water injection device is installed on the top plate provided at the top of the outer box 5 as shown in Fig. 2. It is attached to 15 by screw 27,
This water injection device is connected to a hose 22 that communicates with a water supply solenoid valve 20, and is connected to a top plate 15 with a screw 27.
A member A28 attached to this member A28
Since the component B29 is attached to the washing/dehydrating tank 6 with a screw 30 and has an opening 31 for injecting water into the washing/dehydration tank 6, the number of parts increases and the number of assembly steps increases.
The cost of anti-rust treatment for the screws attaching the 29 was becoming expensive. Furthermore, member A28 and member B
In order to attach this water injection device composed of 29 from the back side of the top plate 15 with screws 27 and 30,
During assembly, the top plate 15 had to be turned upside down, which increased the number of assembly steps and caused unreasonable quality assurance issues such as damage to the top plate, which also contributed to the high cost. .

The present invention has been made to solve the above-mentioned conventional drawbacks, and one embodiment thereof will be described below with reference to the drawings.

In FIGS. 1, 3, and 4, 1 is a dehydration tank, and a support plate 2 is provided at the outer bottom of the dehydration tank 1. The dewatering tank 1 is supported in an outer box 5 in a vibration-proof manner. Reference numeral 6 denotes a washing and dehydration tank which is rotatably installed in a dehydration receiving tank, and a pulsator 7 is rotatably installed at the inner bottom. Reference numeral 8 denotes a motor disposed below the support plate 2, and this motor 8 rotates the pulsator 7 and the washing/dehydration tank 6 via a V-belt 9, a pulley 10, a washing/dehydrating switching mechanism 11, etc. . Reference numeral 12 denotes a drain port provided at the bottom of the dewatering tank 1, and a drain hose 14 with a drain pot 13 installed in the middle is connected to the drain port 12.

Reference numeral 15 denotes a top plate made of synthetic resin installed on the upper part of the outer box 5, and an operation box 16 is integrally molded therein.
An operation panel 17 is provided on the front surface of the operation box 16, and a decorative panel 19 is provided on the front surface of the operation panel 17 together with a switch 18. Reference numeral 20 denotes a water supply solenoid valve installed in the operation box 16. A water supply hose 21 is connected to one end of the water supply solenoid valve 20, and a hose 22 is connected to the other end. 32
is the lid.

Reference numeral 23 denotes a water injection device located on the back surface of the operation box 16 above the upper end opening of the washing/dehydration tank 6, and includes a rib 23a provided in the width direction on the back surface of the operation box 16 or the top plate 15, and the rib 23a. Operation box 16 from both ends of
Alternatively, it is made of synthetic resin and has a rib 23b provided in the depth direction on the back surface of the top plate 15 and a cylindrical portion 23c that communicates with the water supply solenoid valve 20 via a hose 22 in a portion surrounded by the back surface of the top plate 15. The member 23d is fitted to the side wall of the member 23d with or without applying a waterproof sealing adhesive. Note that the draft angle of the side wall of the member 23d of the mold for molding is made to match the draft angle of the rib 23b. The space portion 23e formed by this is a slit portion 23 formed by a plurality of ribs 23f provided on the member 23d.
The water that flows from the water supply hose 21 through the water supply solenoid valve 20 and the hose 22 into the space 23e from the cylindrical part 23c of the member 23d flows through the slit part 23 between the ribs 23f.
g, flows out from the water injection opening 31, and flows down into the washing and dewatering tank 6. Note that the rib 23
Instead of forming the slit portion 23g by f, a plurality of holes may be made in the member to communicate the space portion 23e with the opening portion 31.

Also, the member 23d has a flange 23h for screwing.
A cutout hole 25 at the bottom of the operation box 16 is provided.
The flange 23h inserted through the screw 2 is attached to a mounting boss 24 provided inside the operation box 16.
It is fixed by 6.

33 is a substantially L-shaped gutter provided on the outer wall of the member 23d corresponding to the rib 23a provided on the back surface of the operation box 16 or the top plate 15; The water injection opening 31 side is the open end 34
The distance h between a portion corresponding to the bottom of the gutter and the ground is minimum at the open end 34.

In this way, the water injection device 23 includes ribs 23a provided in the width direction on the back surface of the operation box 16 or the top plate 15,
The operation box 16 or the top plate 15 is connected from both ends of the rib 23a.
The member 23d is located in a portion surrounded by the rib 23b provided in the depth direction on the back surface of the top plate 15 and the back surface of the top plate 15.
It is constructed by fitting the However, depending on the material of the top plate and parts, and the molding conditions, there may be gaps in this fitting, and the water supply solenoid valve 20
If the flow rate of the water poured into the space 23e is too large compared to the flow rate flowing out from the slit 23g or the plurality of holes, if the water is poured into the space 23e for 20 minutes or more under the structure shown in this example, The water pressure in the space 23e increases, and there is a risk that water may leak from the gap between the fitting parts. This water leakage may worsen the state of the water flowing out from the water injection opening 31 or may fall onto the floor, creating a serious problem.

However, the gutter 3 provided on the outer wall of the member 23d
3, water leakage from the fitting portion is received by the gutter 33. This gutter has an open end 34 on the washing and dewatering tank 6 side, and the gutter 33 is sloped so that the distance h between the bottom of the gutter 33 and the ground is minimized at the open end 34. Therefore, leakage water received by the gutter 33 passes through the gutter 33 to its open end 34.
It flows down into the washing/dehydration tank 6. Therefore, water leakage does not adversely affect the water flow at the water injection opening 31 or fall onto the floor, which is highly effective in solving the above-mentioned problem.

Generally, the state of the water flowing from the water injection opening 31 of the water injection device of a single-tub dehydration washing machine into the washing/dehydration tank 6 is the same regardless of the amount of water flowing into the water injection device from the water supply solenoid valve 20. The water flow must be wide enough to sufficiently cover the clothes in the container, and the water flow must be weak enough to prevent splashing after being applied to the clothes. In the case of this water injection device 23, water that flows into the space 23e from the cylindrical part 23c of the member 23d through the water supply solenoid valve 20 and the hose 22 hits the top plate 15 and the ribs 23b in this space 23e, and
The water force is weakened, spreads over the slit portion 23g or the plurality of holes, and flows down into the saucer portion 23i of the water injection device 23 through the slit portion 23g or the holes. In this case, when the force of the water flow flowing into the space 23e is large, the force of the water flow passing through the slit portion 23g or the hole around the cylindrical portion 23c will pass through the slit portion 23g or the hole on the side away from the cylindrical portion 23c. The force of the water flow increases, and as a result, it flows down into the saucer portion 23i, and from the water injection opening 31 into the washing and dewatering tank 6.
As shown in Figure 5 A, the water flow is large at the center of the water injection opening 31 and small at both sides; the width is small and the water flow is too large only at the center. becomes. In this state, water from the water injection opening 31 flows into the washing and dewatering tank 6.
It is difficult to seep into the clothes inside, and the narrow width of the water flow is too strong, so it splashes off when it hits the clothes.
Wet the floor.

Moreover, on the contrary, from the water supply solenoid valve 20 to the cylindrical part 23c
When the force of the water flowing into the space 23e through the cylindrical part 23c is small, the water poured into the space 23e from the cylindrical part 23c does not hit the rib 23b or the top plate 15, and therefore does not flow into the slit 23g or the hole. It does not spread upward and immediately flows down into the saucer portion 23i through the slit portion 23g or hole around the cylindrical portion 23c. For this reason, the width of the water flowing out from the water injection opening 31 is narrow, and the force of the water flow is therefore large. Therefore, the water from the water injection opening 31 does not spread over the clothes in the washing and dewatering tank 6, and is difficult to soak into the clothes. Furthermore, since the width of the water stream is narrow and the force is too great, it tends to scatter after hitting clothes, causing problems such as falling onto the floor.

Reference numeral 35 in FIG. 4 denotes a partition rib provided in the width direction perpendicular to the water flow so as to span the slit portion 23g or the hole at the front of the opening of the cylindrical portion 23c in the member 23d. The above problem was solved by partitioning the room into two rooms. That is, from the water supply solenoid valve 20 through the cylindrical part 23c, the space part 2
When the water flow from the cylindrical part 23c is large, the water poured into the cylindrical part 23c hits the partition rib 35 on the front surface of the cylindrical part 23c, and the water poured into the cylindrical part 23c flows into the front room A partitioned by the rib 35. It fills the room, climbs over this rib 35, and enters the next room B. During this time, a small amount of water flows out from the slit section 23g or hole in the room A into the saucer section 23i. The remaining water climbs over the partition rib 35 and flows out from the slit portion 23g or hole into the saucer portion 23i in the chamber B. Here, the water flow flowing into the slit portion 23g or the hole is weaker than the case where the water flows directly from the cylindrical portion 23c through the slit portion 23g or the hole because the water has passed over the rib 35, and the water flow is weaker and flows into the slit portion 23g or the entire hole. When the water passes through the slit or hole, the water spreads out so that the force is the same and flows out into the saucer portion 23i. For this reason, the water flow that has passed through the slit section 23g or hole in room A is added to the water flow that has passed through the slit section 23g or hole in room B, which collects in the saucer section 23i and flows out from the water injection opening 31. The washing and dewatering tank 6 is connected to the water filling opening 31 of the section 23i.
The state of the water poured into the water injection opening 31 is as shown in FIG. The water is poured evenly onto your clothes, and there is no chance of water splashing. Next, when the flow of water poured from the cylindrical portion 23c is weak, the water poured into the chamber A of the space 23e does not fill the chamber A, and immediately flows from the slit portion 23g or hole of the chamber A. It flows out into the saucer portion 23i. However, since the space 23e is partitioned by the ribs 35, the volume of the room A is smaller than the space 23e compared to the case without partitions, and the small amount of the cylindrical part 2
The water easily fills with water from 3c, and therefore spreads over the slit portion 23g or hole in room A, and the difference in the force of the water flow passing through each slit or hole is small at each portion. Therefore, the water flowing down into the saucer part 23i has the same force at each part, and because it flows down from each slit or hole, the width of the water flow is wide, and the water flow falls into the saucer part 23i.
The water flow flowing out from the water injection opening 31 into the washing/dehydration tank 6 is also wide and weak.

The position of this partition rib 35 is determined by the volume of room A.
Experiments have shown that the relationship between V ₁ and the volume V ₂ of room B is such that V ₁ ≧V ₂ , and that when V ₁ <V ₂ the effect of dividing into two rooms is small. Also, if the height from the slit surface of the partitioning rib 35 is l ₁ , and the height from the slit surface to the center of the cylinder at the open end of the cylindrical portion 23c is l ₂ , then if l ₁ ≧ l ₂ , the height due to the rib 35 is Experiments have shown that no partitioning effect can be obtained.

Further, a pair of ribs 36 are provided on the saucer portion 23i in parallel with the rib 23f to form a water channel 37. From the water supply solenoid valve 20 through the cylindrical part 23c to the space 23e
If the force of the water flowing into the tray part 2 is extremely weak, it will flow through the slit part 23g around the cylindrical part 23c.
3i, the flow gradient of the saucer portion 23i is reduced to prevent the water flow from flowing down into the saucer portion 23i through the slit portion 23g from increasing in force when the water flow from the cylindrical portion 23c is strong. Due to this, it spreads on the saucer part 23i,
Since both the amount and force of water are weak, the water separates into many lines and flows down from each part of the water injection opening 31 into the washing and dewatering tank. This is not aesthetically pleasing, and since the amount of water in the water stream divided into several parts is even smaller, it is difficult to drain water at the water injection opening 31, and the water flows through the lower surface of the saucer part 23i to the opposite side, and the water flows in the center of the washing and dewatering tank 6. It cannot be poured into the body or soaked into clothing. However, as described above, the water channel 3 provided on the saucer portion 23i
7, the water that fell into the saucer part 23i does not spread,
Moreover, since the water does not separate into many lines, it is collected in the water channel 37 and flows smoothly down from the water injection opening 31. Also, the height m of this rib 36 is the slit portion 23g.
If the gap is set sufficiently low relative to the distance between the slit portion 23g and the saucer portion 23i, when the amount of water flowing out from the slit portion 23g is large, the water in this channel 37 will overflow and the saucer portion 23
It is possible to obtain a good water flow that spreads uniformly in the i direction and has a wide spread width. The width and force of the water flow coming out of the water channel 37 can be adjusted by making the pair of ribs 36 parallel to each other or in the shape of an "eight" or an inverted "eight" shape.

Further, it is preferable that the rib 36 does not extend to the end of the water injection opening 31 of the saucer portion 23i, but extends to the front of the water injection opening 31. That is, by setting the distance n between the end of the rib 36 and the water injection opening 31 by about the height m of the rib 36, the influence of the rib 36 appears on the state of the water flowing down from the water injection opening 31 when the flow rate is large. Nothing happens. When this rib 36 is extended to the water injection opening 31, the water flow that flows down the water injection opening 31 when the flow rate is high is disturbed by the rib 36, and may be divided into three streams.

The cross-sectional shape of the end face of the water injection opening 31 of the saucer portion 23i is as shown in FIG.
j is a knife edge, and the end 23k on the side opposite to the water receiving side is rounded. As a result, when an extremely small amount of water falls onto the saucer portion 23i and flows down from the water injection opening 31 through the water channel 37, the knife edge 23j prevents the water from going around the back surface of the saucer portion 23i. , water drains better. Further, by providing a radius at the end 23k on the opposite side to the water receiving side, even if a hand hits the receiving tray 23i when taking out clothes from the washing/dehydrating tank 6, the user will not be injured. On the other hand, in the past, the end opposite to the water receiving side was made with a knife edge to prevent water from running out, which could result in injury when your hand touched it.

As described above, according to the present invention, a water injection device is formed by providing a rib on the back surface of the operation box or a top plate formed integrally with the operation box and fitting a member to the rib to form a space. , when using a water injection device that can significantly reduce the number of parts and assembly man-hours compared to conventional water injection devices, and has extremely good water injection performance, it is possible to prevent water leakage from the fitting part and provide a good water flow that can handle large and small water injection amounts. maintenance and quality safety measures can be easily realized. In addition, by providing a rib at a position spanning the slit or hole to partition the space into two or more parts at least in the front and back, the water poured into the space can be
If the water flow is large, most of the water will hit the partition ribs and go over the partition ribs, resulting in a wide, weak water flow being poured from the water injection opening, and if the water flow is weak, the partition ribs will Since the space is small and easily filled with water, it spreads over the slit or hole and has the same force, resulting in a wide and weak water stream. Accordingly, it is possible to obtain a water injection device with extremely good water injection performance.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view showing the entirety of the present invention, Fig. 2 is an enlarged view of the conventional main part, Fig. 3 is an enlarged view of the main part showing an embodiment of the present invention, and Fig. 4 is a partially cutaway view. A perspective view, FIG. 5 is a view taken along the line AA in FIG. 4, and FIG. 6 is a sectional view of the end face of the water injection opening. 6...Washing/dehydration tank, 7...Pulsator, 15...Top plate, 16...Operation box, 23...Water injection device, 23a, 2
3b...Rib, 23c...Cylindrical part, 23d...Member with a tubular part, 23e...Space part, 23f...Rib, 23
g...Slit part, 31...Water injection opening, 33...Gutter,
34...opening end, 35...partition rib, 36...rib.

Claims (1)

[Scope of Claims] 1. A washing/dehydrating tank with a pulsator installed at the bottom, an outer box in which the washing/dehydrating tank containing the washing/dehydrating tank is vibration-proofly supported via rods, etc., and an upper part of the outer box. A synthetic resin top plate provided, an operation box integrally molded therewith, a water supply solenoid valve installed in the operation box, and a rib provided on the back side of the operation box or the top plate, and the operation box or forming a part surrounded by the top plate and the ribs, and fitting a member having a cylindrical part communicating with the water supply solenoid valve via a hose into the operation box or the part surrounded by the top plate and the ribs. A space communicating with the water supply electromagnetic valve via a hose is formed, and a plurality of slits or holes are provided in the member at positions corresponding to the top plate or the operation box, and the space is connected to the washing and washing machine. a water injection device communicating with a water injection opening to the dewatering tank, the water injection device having a rib at a position spanning the slit or hole,
A single-tank dehydrating washing machine characterized in that a space is partitioned into two or more at least in the front and back. 2. The water injection device has a gutter on the outer wall of the member having a cylindrical part, corresponding to the rib on the back of the operation box or the top plate, and the gutter has an open end on the side of the water injection opening, which corresponds to the bottom of the gutter. 2. The single-tub dehydrating washing machine according to claim 1, wherein the distance between the part and the ground is minimized at the open end. 3. The water injection tank has a saucer part located below the slit or hole, and on this saucer part there are parallel or "eight" shaped or A patent claim characterized in that it has a pair of ribs forming an inverted "8" shape, and the end surface of the rib is separated from the end surface on the side of the water injection opening in the saucer portion by a distance approximately equal to the height of the ribs. A single-tub dehydrating washing machine as described in Scope 1. 4. The water injection opening end face of the water injection tray portion of the water injection device, the end face on the water receiving side is a knife edge, and the end face on the opposite side to the water receiving side has an R portion. Single-tank dehydrating washing machine.