JP6948507B2 - Washing machine - Google Patents

Description

The present invention relates to a washing machine, and particularly to a washing machine.

Generally, a conventional pulsator washing machine is configured to include a washing tub, an outer tub, a damper and a power system. During washing and dehydration, the rotation of the washing tub with respect to the outer tub causes an action between the clothes and the washing water, and the purpose of washing or dehydrating the clothes can be achieved. Of these, the outer tank is a water storage tank and does not come into contact with clothes during the washing process. The outer tank is mounted on the outside of the washing tank to support the washing tank. Since the outer tub of a conventional washing machine has a larger volume than the washing tub, a large amount of washing water remains between the inner tub and the outer tub, and it cannot be fully utilized. Not only is this arrangement disadvantageous for saving water, but it also significantly increases the overall volume of the washing machine.

Patent Document 1 discloses a one-tank type water-saving washing machine. In the washing machine, a water collecting device is provided at the tub mouth of the washing tub, and the water collecting port of the water collecting device surrounds the tub mouth along the washing tub. The water collecting chamber located at the tank mouth portion of the water collecting device is connected to a plurality of drain pipes symmetrically arranged from top to bottom along the outer wall of the washing tank. At the time of dehydration, the water collecting device collects the water stream centrifuged by high-speed rotation and guides it downward to discharge it. Although the outer tank is omitted in the patent, the drainage pipe is located outside the tank. Therefore, when the washing machine is dehydrated, it easily collides with the inner wall of the housing, and the drain pipe is worn and water leaks. Moreover, the leaked washing water enters the equipment such as a motor as it is, and the washing machine is short-circuited and breaks down.

In view of the above, the present invention is proposed.

Chinese Patent Application No. 99230455.5

The present invention provides a washing machine capable of eliminating defects in the prior art, expanding the volume of the washing tub, improving the water saving effect, and preventing short-circuiting of electrical equipment due to the washing water being scattered to the outside. The purpose is to do.

In order to achieve the above object, the following technical plan is used in the present invention.

A washing machine including a housing, a washing tub, and a mounting plate provided at the bottom of the washing tub. The mounting plate is connected to the housing via a damper, and the washing tub becomes a water storage tank at the washing stage. In the dehydration stage, it becomes rotatable with respect to the mounting plate. A subsidence type water collecting structure is provided between the outer edge of the mounting plate and the housing, and the outer peripheral side of the water collecting structure is hermetically connected to the inner wall of the housing.

Further, a sub-drainage port is provided at the bottom of the water collecting structure, and the sub-drainage port communicates with the outside of the washing machine.

Further, the horizontal height of the connection portion between the outer peripheral side of the water collecting structure and the inner wall of the housing is lower than the horizontal height of the connection portion between the inner peripheral side and the mounting plate.

Further, the inner peripheral side of the water collecting structure is elastically connected to the outer edge of the mounting plate.

Further, the water collecting structure includes a water receiving ring provided between the mounting plate and the housing, and the inner peripheral side of the water receiving ring is connected to the outer edge of the mounting plate via a plurality of elastic suspension members, and the outer circumference thereof. The side is hermetically connected to the mounting structure provided on the inner wall of the housing, the upper part of the water receiving ring is an open port, and the lower part is provided with an auxiliary drainage port.

Further, the elastic suspension member is a tension spring suspended vertically, and the upper end of the tension spring is connected to the edge of the mounting plate and the lower end is connected to the side wall of the water receiving ring.

Further, the mounting structure includes a horizontal portion extending horizontally from the inner wall of the housing and an annular flange connected to the horizontal portion and extending downward, and one side wall of the water receiving ring is mounted among the annular flanges. It is fixed to the side facing the back of the plate, and is fixed to the annular flange by a pressing method with a fastening ring.

Further, a drainage path is provided on the peripheral wall of the washing tank, and the drainage path drains from top to bottom.

Further, a water collecting ring is provided at the upper end of the washing tank, a dehydration port is provided inside the water collecting ring, and the drainage path has an upper end communicating with the water collecting ring and a lower end of the washing tank. It communicates with the drainage port provided at the bottom.

Further, a valve plug for controlling the opening and closing of the drain port is attached to the drain port at the bottom of the washing tank, the valve plug is controlled to be closed in the washing stage, and the valve plug is opened in the draining and dehydrating stages. It is controlled to do.

Further, a water stop ring protruding from the upper surface of the mounting plate is provided, and the water stop ring has a concave groove structure for accommodating wash water by extending upward from the upper surface of the mounting plate by a certain height. The spout of the drainage path formed is located in the recessed groove structure, and the water collecting structure is located outside the water stop ring.

Further, a main drainage port is provided on the mounting plate and inside the water stop ring, and the main drainage port communicates with the outside of the washing machine via the drainage pipe of the washing machine, and is located at the bottom of the water collecting structure. A sub-drainage port is provided, and the sub-drainage port is connected to the drainage pipe of the washing machine via a branch pipe.

Further, the drainage path includes a water channel housing and a part of the washing tank wall, and a groove penetrating vertically is provided on the side of the water channel housing facing the washing tank wall, and the water channel housing engages with the washing tank wall. Then, it surrounds the water flow path together with the washing tank wall.

Further, a water stop plate for guiding the washing water to the drainage path is provided in the water collecting ring, and the water stop plate is located above the water supply port in the drainage path and is inclined so as to form a constant angle with the horizontal plane. Will be installed.

Further, the side of the water collecting ring facing the axial center of the cleaning tank is an arcuate surface, and the arcuate surface is gradually formed from the bottom to the top along the axial direction of the cleaning tank. It curves toward the center, and the dehydration port of the water collecting ring is provided at the base end of the bottom of the arcuate surface.

Further, the mounting plate is provided with a locking mechanism, which is located at the bottom of the cleaning tank, and during the cleaning stage, the locking mechanism engages the cleaning tank to regulate the rotation of the cleaning tank.

By using the above technical plan in the present invention, the following beneficial effects can be obtained.

Since the washing machine of the present invention omits the outer tub structure and the washing tub is designed as a water storage tank structure, the utilization rate of the washing water can be improved and the amount of the washing water used is reduced. Further, since the volume of the washing tub can be made larger by omitting the outer tub, the amount of clothes to be washed can be increased accordingly, and the purpose of expanding the capacity of the washing machine can be achieved. On the other hand, between the mounting plate of the present invention and the housing, a water collecting structure for collecting the washing water flowing down along the inner wall of the housing is provided. Therefore, the problem that the washing water is scattered to the outside and the washing machine is short-circuited is avoided, and the service life of the washing machine is effectively extended.

FIG. 1 is a cross-sectional view of the structure of the present invention. FIG. 2 is a structural diagram of a part of the drainage route of the present invention. FIG. 3 is an enlarged view of a Y portion of FIG. FIG. 4 is an enlarged view of the K portion of FIG.

Hereinafter, specific embodiments of the present invention will be described in more detail by combining the drawings.

As shown in FIG. 1, the washing machine includes a housing 1, a washing tub 2 for accommodating clothes to be washed, a power device 3 for rotationally driving the washing tub 2, and a mounting plate 4 mounted on the lower part of the washing tub 2. Also included is a damper that connects the mounting plate 4 and the housing 1. The cleaning tank 2 is rotatably provided in the housing 1. Further, the cleaning tank 2 is mounted on the mounting plate 4 and is rotatable with respect to the mounting plate 4. The washing tank 2 is used as a water storage tank for storing washing water. The mounting plate 4 is used to support the cleaning tank 2 and is movably connected to the housing 1 via a damper. During cleaning or dehydration, vibration is generated in the cleaning tank 2 and the mounting plate 4, and the vibration is transmitted to the damper and absorbed.

In combination with FIG. 4, a drain port is provided at the bottom of the cleaning tank 2. Further, a protruding water stop ring 12 is provided on the upper surface of the mounting plate 4. The water stop ring 12 projects from the upper surface of the mounting plate 4 in the direction of the cleaning tank 2 and extends by a certain height to form a concave groove structure for accommodating the cleaning water. A main drain port 16 is provided on the mounting plate 4 and inside the water stop ring 12, and communicates with the drain port at the bottom of the cleaning tank 2. Further, a water collecting structure 18 is provided between the outer edge of the mounting plate 4 and the housing 1. At least one side of the water collecting structure 18 is connected to the inner wall of the housing 1 in order to collect the washing water flowing down along the inner wall of the housing 1. Further, a sub-drainage port 17 is provided at the bottom of the water collecting structure 18. The main drainage port 16 and the sub-drainage port 17 communicate with the outside of the washing machine, respectively.

Specifically, the main drainage port 16 communicates with the outside of the washing machine via the drainage pipe 6 of the washing machine, and the sub drainage port 17 is connected to the drainage pipe 6 of the washing machine via the branch pipe 19.

A balance ring 7 is provided at the upper end of the washing tank 2, and a water collecting ring 8 is provided below the balance ring 7. Further, a drainage path 5 is provided inside the peripheral wall of the washing tank 2, and the water collecting ring 8 communicates with the drainage path 5. A dehydration port is provided inside the water collecting ring 8 or on the side facing the washing tank 2. The drainage path 5 is provided vertically, and the upper end communicates with the water collecting ring 8 and the lower end communicates with the drainage port at the bottom of the washing tank. The cleaning tank 2 has a constant taper. When the washing tank 2 rotates at high speed, the washing water in the washing tank 2 rises upward along the washing tank wall by the action of centrifugal force, rises to a certain height, and then the water collecting ring 8 is opened from the dehydration port of the water collecting ring 8. Enter inside. The washing water flows in a ring shape in the water collecting ring 8, but when the rotation speed of the washing tank 2 decreases, it flows downward along the drainage path 5 and is discharged from the drain port at the bottom of the washing tank.

Referring to FIGS. 2 and 3, preferably, a water stop plate 13 for guiding the washing water to the drainage path 5 is provided in the water collecting ring 8. The water stop plate 13 is located above the water supply port in the drainage path 5, and is installed so as to be inclined so as to form a constant angle with the horizontal plane. The wash water collides with the water stop plate 13 when flowing in a ring shape in the water collecting ring 8. Since the side of the waterstop 13 facing the water flow direction is provided so as to be inclined downward, the flow direction of the water flow changes when it collides with the water stop plate 13, and the flow from the flow along the circumferential direction of the tank to the downward along the tank wall. It changes to flow and enters the drainage route 5. Since the flow direction of the water flow in the water collecting ring 8 is changed by the water stop plate 13, the water flow in the water collecting ring 8 can flow into the drainage path 5 at the time of high-speed dehydration. As a result, the situation where the amount of water in the water collecting ring 8 becomes excessive is avoided.

A valve plug 15 is attached to the drain port at the bottom of the cleaning tank 2. The valve plug 15 is located inside the water stop ring 12. In the cleaning stage, the valve plug 15 is in the closed state, while in the dehydration stage, the valve plug 15 is in the open state. When the valve plug 15 is opened, the washing water in the washing tub 2 flows into the concave groove structure and is discharged from the drain pipe 6 of the washing machine to the outside of the washing machine.

Specifically, the water collecting structure 18 is further elastically connected to the outer edge of the mounting plate 4. The water collecting structure 18 includes a water receiving ring 21 provided between the mounting plate 4 and the housing 1. The upper part of the water receiving ring 21 is an open port, and the sub-drainage port 17 is provided at the bottom. The water receiving ring 21 has an annular structure, one side of which is connected to the outer edge of the mounting plate 4 via a plurality of elastic suspension members 20, and the other side is sealed in a mounting structure extending from the inner wall of the housing 1. Be connected. When the mounting plate 4 moves up and down, the elastic suspension member 20 is deformed accordingly to adapt to the movement of the mounting plate 4.

Preferably, the elastic suspension member 20 is a tension spring. The upper end of the tension spring is connected to the edge of the mounting plate 4, and the lower end is connected to the side wall of the water receiving ring 21. The number of the tension springs is plurality, and the tension springs are uniformly arranged on the inner peripheral side of the water receiving ring 21.

The mounting structure includes a horizontal portion 23 extending horizontally from the inner wall of the housing 1 and an annular flange 24 connected to the horizontal portion 23 and extending downward. One side wall of the water receiving ring 21 is fixed to the side of the annular flange 24 that faces the back to the mounting plate 4, and is fixed to the annular flange 24 by the fastening ring 22 by a pressing method.

The mounting structure may be integrally molded with the housing 1, or may be manufactured separately and then mounted on the inner wall of the housing 1 to seal the connection portion.

Preferably, the water stop ring 12 has a height substantially higher than the bottom surface of the cleaning tank 2, and a large gap is maintained between the water stop ring 12 and the outer peripheral wall of the cleaning tank 2 so as not to collide with the cleaning tank 2 during rotation. Has been done.

The lower end of the drainage path 5 is connected to the drainage port at the bottom of the washing tank 2. The drainage port is located below the pulsator of the washing machine, and the drainage path 5 extends to the drainage port. The drainage path 5 includes a channel housing 11 and a part of the washing tank wall. A groove that penetrates vertically is provided on the side of the water channel housing 11 that faces the cleaning tank wall. The water channel housing 11 engages with the washing tank wall and surrounds the water flow path together with the washing tank wall. The water channel housing 11 is similar to the water channel structure in the inner tub of a conventional washing machine, but the upper end of the water channel housing 11 extends to the water collecting ring 8 and is connected to the water channel housing 11, and the axis of the washing tub 2 of the water channel housing 11 is connected. It differs in that the side facing the water does not have a spout.

A plurality of grooves parallel to the water channel housing 11 may be provided to form a plurality of water flow paths.

Preferably, the water channel housing 11 is detachably mounted in the cleaning tank 2. A hook is provided on the bottom of the water channel housing 11, and an engaging port for engaging with the hook is provided on the tank wall of the washing tank 2. Further, the water channel housing 11 is provided with a screw hole at the upper portion, and is fixedly connected to the cleaning tank 2 by a screw. When mounting the water channel housing 11, the hook is engaged with the engagement port to position and support the water channel housing 11, and then the water channel housing 11 is fixed to the cleaning tank 2 with screws.

Preferably, the side of the water channel housing 11 facing the axis of the washing tank is provided with protrusions or streaks that come into contact with and rub against clothing. In the washing process, the surface of the water channel housing 11 facing the axis of the washing tub may act to rub against clothes.

The side of the water collecting ring 8 facing the axis of the washing tank has an arcuate surface so that the washing water does not overflow from the washing tank 2 during dehydration. The arcuate surface is gradually curved from the bottom to the top along the axial direction of the cleaning tank 2 toward the center of the cleaning tank 2, thereby gradually reducing the opening at the upper end of the cleaning tank 2. The dehydration port of the water collecting ring 8 is provided at the base end of the bottom of the arcuate surface. When the wash water rises along the tank wall, the arcuate surface of the water collecting ring 8 acts to prevent the water flow from continuing to rise, and the water flows are collected and flowed into the dehydration port of the water collecting ring 8.

The power unit is mounted on the bottom of the mounting plate 4 and includes a motor and a reduction clutch. The rotating shaft of the motor is connected to the bottom of the cleaning tank via a reduction clutch to rotationally drive the cleaning tank 2. The output shaft of the reduction clutch penetrates the mounting plate 4 and is connected to the cleaning tank 2. At least one dynamic seal is provided between the output shaft and the mounting plate 4. Preferably, the bottom of the mounting plate 4 is provided with a plurality of reinforcing ribs projecting downward.

Further, a lock mechanism 14 is provided on the upper surface of the mounting plate 4. The lock mechanism 14 is located at the bottom of the cleaning tank 2 and regulates the rotation of the cleaning tank 2 by engaging with the cleaning tank 2. The lock mechanism 14 can lock the cleaning tank 2 to prevent the cleaning tank 2 from rotating. In the cleaning stage, the lock mechanism 14 locks the cleaning tank 2 so that the cleaning tank 2 cannot rotate. On the other hand, in the dehydration stage, the lock mechanism 14 releases the lock so that the washing tank 2 can rotate.

The damper includes a suspension rod 9 and a suspension rod base 10. The upper end of the suspension rod 9 is connected to the housing 1, and the lower end is connected to the suspension rod base 10. An engagement port that engages with the suspension rod base 10 is provided on the edge of the mounting plate 4. The suspension rod base 10 is engaged in the engagement port and is located below the mounting plate 4. A spring is mounted in the suspension rod base 10. The spring in the suspension rod base 10 is compressed under the action of gravity of the mounting plate 4 and the cleaning tank 2, and also exerts a vibration control function when the cleaning tank 2 vibrates. Since the mounting plate 4 is located below the cleaning tank 2, the suspension rod base 10 is located below the cleaning tank 2 and does not occupy the space between the cleaning tank 2 and the housing 1. Therefore, it is advantageous for expanding the volume of the cleaning tank 2.

In the dehydration process of the present invention, the water in the cleaning tank 2 is discharged from the drain port at the bottom of the cleaning tank 2 before dehydration, and then the cleaning tank 2 is rotationally driven at high speed by a motor. Then, the water remaining in the cleaning tank 2 rises along the cleaning tank wall due to the action of centrifugal force and enters the water collecting ring 8. In the water collecting ring 8, the flow direction of the water flow changes due to the action of the water stop plate 13, and the water flows downward into the drainage path 5. Then, when it flows out from the washing tub 2 along the drainage path 5, it falls into a concave groove structure surrounded by the water stop ring 12 and is discharged to the outside of the washing machine through the main drainage port 16 and the drainage pipe 6 of the washing machine. .. When a part of the washing water scattered from the washing tank 2 flows into the water collecting structure 18 along the inner wall of the housing 1, it is discharged from the auxiliary drain port 17.

Further, the mounting plate 4 and the water stop ring 12 are integrally designed to form a tank-like structure.

The above is a preferred embodiment of the present invention. A person skilled in the art can make various modifications and improvements on the premise that the principle of the present invention is not deviated, and these are also regarded as the scope of protection of the present invention. For example, the drainage route may be provided on the outer peripheral wall of the washing tank, and the change in the position does not affect the understanding of the technical plan of the present invention by those skilled in the art.

1 Housing 2 Cleaning tank 3 Power unit 4 Mounting plate 5 Drainage route 6 Drainage pipe 7 Balance ring 8 Water collection ring 9 Suspension rod 10 Suspension rod base 11 Waterway housing 12 Water stop ring 13 Waterstop plate 14 Lock mechanism 15 Valve plug 16 Main drainage port 17 Sub-drainage port 18 Water collection structure 19 Branch pipe 20 Elastic suspension member 21 Water receiving ring 22 Fastening ring 23 Horizontal part 24 Circular flange

Claims (16)

A housing, a washing tank, and a mounting plate provided at the bottom of the washing tank are included, and the mounting plate is connected to the housing via a damper, and the washing tank becomes a water storage tank in the washing stage and a dehydration stage. Then, it is a washing machine that can rotate with respect to the mounting plate.
A washing machine characterized in that a subsidence type water collecting structure is provided between the outer edge of the mounting plate and the housing, and the outer peripheral side of the water collecting structure is hermetically connected to the inner wall of the housing. The washing machine according to claim 1, wherein a sub-drainage port is provided at the bottom of the water collecting structure, and the sub-drainage port communicates with the outside of the washing machine. Claim 1 or 2 is characterized in that the horizontal height of the connection portion between the outer peripheral side of the water collecting structure and the inner wall of the housing is lower than the horizontal height of the connection portion between the inner peripheral side and the mounting plate. The washing machine described in. The washing machine according to any one of claims 1 to 3, wherein the inner peripheral side of the water collecting structure is elastically connected to the outer edge of the mounting plate. The water collecting structure includes a water receiving ring provided between the mounting plate and the housing, and the water receiving ring is connected to the outer edge of the mounting plate via a plurality of elastic suspension members on the inner peripheral side. Claims 1 to 4, wherein the outer peripheral side is hermetically connected to a mounting structure provided on the inner wall of the housing, the upper part of the water receiving ring is an open port, and the lower part is provided with an auxiliary drainage port. The washing machine described in any of. The elastic suspension member is a tension spring suspended vertically, and the upper end of the tension spring is connected to the edge of the mounting plate, and the lower end is connected to the side wall of the water receiving ring. Item 5. The washing machine according to item 5. The mounting structure includes a horizontal portion extending horizontally from the inner wall of the housing and an annular flange connected to the horizontal portion and extending downward, and one side wall of the water receiving ring is of the annular flange. The washing machine according to claim 5, wherein the washing machine is fixed to the side facing the back to the mounting plate and is fixed to the annular flange by a pressing method by a fastening ring. The washing machine according to claim 1, wherein a drainage path is provided on the peripheral wall of the washing tub, and the drainage path drains from top to bottom. A water collecting ring is provided at the upper end of the washing tank, a dehydration port is provided inside the water collecting ring, and the drainage path has an upper end communicating with the water collecting ring and a lower end of the washing tank. The washing machine according to claim 8, wherein the washing machine communicates with a drain port provided at the bottom. A valve plug that controls the opening and closing of the drain port is attached to the drain port at the bottom of the washing tank, the valve plug is controlled to be closed in the washing stage, and the valve plug is opened in the drainage and dehydration stages. The washing machine according to claim 9, wherein the washing machine is controlled to be used. A water stop ring that protrudes from the upper surface of the mounting plate is provided, and the water stop ring has a concave groove structure that accommodates wash water by extending upward from the upper surface of the mounting plate by a certain height. The washing machine according to claim 8, wherein the spout of the drainage path is located in the recessed groove structure, and the water collecting structure is located outside the water stop ring. A main drainage port is provided on the mounting plate and inside the water stop ring, and the main drainage port communicates with the outside of the washing machine via a drainage pipe of the washing machine, and is located at the bottom of the water collecting structure. The washing machine according to claim 11, wherein a sub-drainage port is provided, and the sub-drainage port is connected to the drainage pipe of the washing machine via a branch pipe. The drainage path includes a water channel housing and a part of the washing tank wall, and a groove is provided up and down on the side of the water channel housing facing the washing tank wall, and the water channel housing is provided in the washing tank wall. The washing machine according to claim 8, wherein the washing machine is engaged and surrounds the water flow path together with the washing tub wall. A water stop plate for guiding the washing water to the drainage path is provided in the water collecting ring, and the water stop plate is located above the water supply port in the drainage path and is inclined so as to form a constant angle with the horizontal plane. The washing machine according to claim 9, wherein the washing machine is installed. The side of the water collecting ring facing the axis of the washing tank is an arcuate surface, and the arcuate surface gradually goes from bottom to top along the axial direction of the washing tank. The washing machine according to claim 9, wherein the water collecting ring is curved toward the center of the washing machine, and the dehydration port of the water collecting ring is provided at the base end of the bottom of the arcuate surface. Further, the mounting plate is provided with a locking mechanism, which is located at the bottom of the cleaning tank, and at the cleaning stage, the locking mechanism engages with the cleaning tank so as to regulate the rotation of the cleaning tank. The washing machine according to claim 1.

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