TW202012734A - washing machine - Google Patents

Abstract

This washing machine is provided with: a washing tub for containing an object to be washed and washing water; a cover body for opening and closing the opening of the washing tub; a pressing unit provided to the cover body and capable of extending and contracting; a membrane for covering the pressing unit; a pressurizing and depressurizing unit for moving forward and backward the pressing unit relative to the object to be washed which is contained in the washing tub; and a control unit for controlling the pressurizing and depressurizing unit. The membrane is formed from a flexible material. The membrane is provided with a deformation absorption unit which deforms so as to be capable of following the forward and backward movement of the pressing unit relative to the object to be washed.

Description

washing machine

Field of invention The present invention relates to a washing machine for washing laundry and the like.

Background of the invention In general, there are upright washing machines in which washing materials such as clothes are stirred in a rotating tank for washing, and washing materials are lifted in the rotating tank in the rotating direction of the rotating tank and then dropped from above Drum washing machine for slap cleaning. In any washing machine, in addition to the chemical force of the detergent, a mechanical force is applied to the laundry for washing. In addition, as a structure for dehydrating the washed laundry, centrifugal force dehydration for separating water from the laundry by centrifugal force caused by high-speed rotation of the rotary tank is a general structure.

These washing machines that apply mechanical force to the laundry for cleaning are not suitable for washing laundry as follows. That is, the laundry that is liable to cause damage to the fabric, the laundry that is easily deformed and deformed due to the entanglement of the laundry and being pulled, or the laundry that is easily deteriorated in touch. In terms of laundry that is easily degraded in touch, there are generally hand-washing, such as knitting or woolen fabrics of wool such as sweaters and cardigans, and scarves made of fine materials made of ultra-fine fibers. In addition, in the dehydration after washing, the aforementioned laundry is not suitable for centrifugal dehydration. Therefore, as for the laundry to be washed by hand as described above, in Japanese Patent Laid-Open No. 63-21097, a washing machine is devised in which a pressing force is applied to the laundry to perform dehydration.

As shown in FIG. 9, the dehydration device described in Japanese Patent Laid-Open No. 63-21097, after depressurizing the space 52 below the washing tank 51 by the decompression device 53, will be provided in the pressure response body 54 The pressing portion 56 at the lower end of the bellows-shaped telescopic portion 55 moves downward. Thereby, the pressing part 56 presses and compresses the laundry to perform dehydration.

Here, the cover 57 that opens and closes the upper opening of the washing tub 51 is pivotally supported by the upper end of the washing machine outer frame 58 through the shaft 59 so as to be rotatable. In addition, the upper end of the telescopic portion 55 is attached to the inner surface of the cover 57. With such a configuration, after the final dehydration step (corresponding to the dehydration step in the embodiment of the present invention), the pressing portion 56 of the pressure-responsive body 54 is lifted to the upper position, and the telescopic portion 55 is folded End all operations.

In addition, Japanese Patent Laid-Open No. 52-62970 proposes a washing machine in which a pressurizing body is constituted by a flexible telescopic member such as bellows and performs reciprocating movement of the pressurizing body. The washing machine is configured to pressurize the laundry and the washing liquid repeatedly by a pressurizing body to perform pressure washing.

Summary of the invention However, in the conventional structure described in Japanese Patent Laid-Open No. 63-21097, when the pressing portion 56 provided in the pressure-responsive body 54 is moved downward to press the compressed laundry for dehydration, almost all the laundry The dehydrated water is attracted by the decompression device 53 and drained out of the machine. On the other hand, the water attached to the bellows-shaped expansion and contraction portion 55 is not attracted by the decompression device 53, that is, is not drained. Therefore, when the pressure-responsive body 54 is lifted to the upper position, the water remains attached to the expansion and contraction portion 55 in the folded state.

In particular, in the intermediate dehydration step (in the embodiment of the present invention, corresponding to the intermediate dehydration operation) after the washing step (in the embodiment of the present invention, equivalent to the washing step), the water in the washing tank 51 contains Many stains attached to the laundry, or detergent components, etc., may cause dirt to accumulate in the retractable portion 55 due to long-term use. In addition, since the retractable portion 55 is folded when not in use, it is difficult for the user to wipe off the dirt and the like of the retractable portion 55, and it is difficult to keep it clean.

In the washing machine which is not suitable for washing by mechanical force, the pressing force can be applied to the washing object by the flexible pressing part, the invention covers the pressing part with a film body Prevent adhesion of dirt to the pressing part. In addition, an object is to provide a washing machine that can make the film body conform to the operation of the pressing portion so that the pressing force acts on the object to be washed.

The washing machine of the present invention includes: a washing tank that houses the object to be washed and washing water; a cover body that opens and closes the opening of the washing tank; a pressing portion that is provided on the cover body and can stretch freely; a membrane body that covers the pressing portion ; Pressurizing and depressurizing part, which makes the pressing part advance and retreat with respect to the laundry contained in the washing tank; and control part, which controls the pressurizing and depressurizing part, and the membrane body is made of flexible material , And a deformation absorbing part is provided on the membrane body, and the deformation absorbing part can deform according to the advance and retreat of the washing part by the pressing part.

Thereby, the pressing portion is covered by the film body, and adhesion of dirt to the pressing portion can be prevented. In addition, the deformation absorption portion of the membrane body responds to the action of the pressing portion, and the membrane body can follow the forward and backward movement of the pressing portion without difficulty to apply the pressing force to the object to be washed. In addition, the resistance of the membrane body when it conforms to the operation of the pressing portion is reduced, and the load applied to the pressurizing and depressurizing portion can be suppressed very low.

Forms for carrying out the invention The washing machine of the first invention includes: a washing tank that houses the object to be washed and the washing water; a lid body that opens and closes the opening of the washing tank; a pressing portion that is provided on the lid body and can stretch freely; a membrane body that covers the pressing portion ; Pressurizing and depressurizing part, which makes the pressing part advance and retreat with respect to the laundry contained in the washing tank; and control part, which controls the pressurizing and depressurizing part, and the membrane body is made of flexible material , And a deformation absorbing part is provided on the membrane body, and the deformation absorbing part can deform according to the advance and retreat of the washing part by the pressing part.

As a result, the pressing portion is covered by the membrane body, and the bellows-shaped expansion and contraction portion is not exposed to the washing tank, and the pressing portion can be protected. Therefore, the detergent component contained in the washing water or the dirt washed away from the object to be washed does not adhere to the pressing part, and can be kept clean. In addition, the deformation absorption portion of the membrane body responds to the operation of the pressing portion, and the membrane body can follow the forward and backward movement of the pressing portion without difficulty to apply the pressing force to the object to be washed. In addition, the resistance of the membrane body when it conforms to the operation of the pressing portion can be reduced, and the load applied to the pressurizing and decompressing portion that performs the expansion and contraction operation of the pressing portion can be suppressed to be low.

In the second invention, especially in the first invention, the pressing portion is provided to be extensible with the lid body opened, and in the film body, the deformation absorbing portion is deformed as the pressing portion is elongated.

Thereby, when the washing is not in use, the pressing portion can be extended with the lid opened. In addition, the membrane body is stretched by giving potential energy by the elongation of the pressing portion. Thereby, the user can make the deformation absorption part extended, and can easily wipe off water droplets or dirt attached to the membrane body.

According to a third invention, especially in the first or second invention, the film body is formed into a bag shape having an opening, and the bottom of the film body is placed on the pressing portion so that the pressing surface of the pressing portion faces the pressing portion, and the film The body has a peripheral edge portion, and the aforementioned peripheral edge portion is held in a cover portion opposed to the peripheral edge of the opening of the washing tank, and the deformation absorbing portion is located between the bottom of the membrane body and the peripheral edge portion, and is formed in a ring shape to surround the periphery of the pressing portion .

Thereby, the membrane body can follow the advancing and retreating motion of the pressing portion without difficulty, and the pressing force acts on the object to be washed. In addition, the resistance of the film body when following the movement of the pressing portion can be reduced. As a result, it is possible to suppress the load applied to the pressurization and decompression portion to be very low. In addition, since the deformation absorbing portion is provided more inside than the peripheral portion of the membrane body, the resistance during deformation can be further reduced.

In the fourth invention, especially in any one of the first to third inventions, the washing tank is provided with a side wall portion connected to the peripheral edge of the bottom of the washing tank and inclined toward the opening, and the deformation absorption section is provided When the cover is closed, it will face the upper part of the side wall.

Thereby, the membrane body can be brought into contact with the wide range of the washing object accommodated in the bottom of the washing tank, and the washing object can be evenly pressed.

According to a fifth invention, particularly in the third or fourth invention, the membrane body is hermetically and watertightly sealed from the washing tank at the peripheral edge portion.

Thereby, the opening of the washing tank and the lid provided with the pressing portion and the membrane can be surely sealed and joined. Therefore, the composition will be simplified.

The sixth invention is particularly any one of the first to fifth inventions, and has a plurality of pressing portions, and the film body is configured to include a plurality of pressing portions.

Thereby, when the washing is not in use, the membrane body is supported by the plurality of pressing portions and becomes a stable state. Thereby, the user can easily wipe off the dirt and the like attached to the film body. In addition, it is possible to prevent the object to be washed from being caught between the pressing portions that expand and contract alternately.

In the seventh invention, particularly in any one of the first to sixth inventions, the film body is provided with a convex portion facing the pressing surface of the pressing portion.

With this, it is possible to prevent the film body from being worn due to contact with the pressing portion, resulting in a thin film body. Therefore, the durability of the membrane body can be improved.

In the eighth invention, particularly in any one of the first to seventh inventions, the membrane body is provided with a coupling portion that is coupled to the pressing surface of the pressing portion.

Thereby, when the pressing portion contracts, the membrane body also moves in a direction away from the object to be washed in accordance with the action of the pressing portion. Therefore, expansion and contraction of the clothes to be washed in the washing step will become easier, and the washing performance can be improved.

The ninth invention, especially in any one of the first to eighth inventions, further includes: a suction portion that sucks the washing water from the object to be washed; and an external air introduction portion that introduces the external air into the washing tank, and , The control unit will perform at least any one of the washing operation and the spin-drying operation. The aforementioned washing operation is to shrink and swell the washed object by pressing and releasing the pressed object by the pressing portion, and perform pressure washing In the above-mentioned dehydration operation, the suction part sucks the washing water and the introduced outside air to perform dehydration.

With this, for the washing object that is not suitable for applying mechanical force to the washing object for washing or squeezing, in the washing step, the washing object can be pressed to perform pressure washing. In the dehydration step, the washing water can be sucked from the object to be sucked and dehydrated. With this, at least one of washing and dehydration can be effectively performed without damaging the object to be washed.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the present invention is not limited by this embodiment. (Embodiment 1)

Hereinafter, the washing machine in Embodiment 1 of the present invention will be described with reference to FIGS. 1 to 6. The washing machine 1 performs a washing operation composed of a washing step, a rinsing step, and a dehydrating step.

1 is a cross-sectional view of a main part of a washing machine 1 in Embodiment 1 of the present invention. 2 is a cross-sectional view of a main part of a state where the lid of the washing machine 1 in the first embodiment is opened. 3A and 3B are schematic diagrams showing the operation of the washing machine 1 in the first embodiment during washing. 4 is a cross-sectional view of main parts of the washing machine 1 in the first embodiment during the spin-drying operation. 5A and 5B are diagrams showing the action of the film body of the washing machine 1 in the first embodiment. FIG. 5A is a schematic diagram of a state where the object to be washed is not pressed. FIG. 5B is a schematic diagram of a state where the pressing portion is pressed to press the object to be washed. 6 is a cross-sectional view of a main part of a state where the cover of the washing machine 1 in the first embodiment is opened and the film is pressed by the pressing portion to be stretched. In addition, in FIGS. 3A and 3B, the water level detection unit 17 and the like described later are omitted. In FIGS. 3A and 3B, the water level of the washing water is indicated by W.

In FIGS. 1 to 6, the washing machine 1 is composed of a lower water tank portion 6 and an upper cover 5. The water tank portion 6 includes a quadrangular washing tank 4 having a predetermined depth. The washing tank 4 has an opening 3 formed on the upper surface, and the user takes out the object to be washed 2 through the opening 3. The cover 5 is rotatably attached to the rear edge of the upper side of the water tank 6 by a hinge 6a. The lid 5 has a lid 5b that opens and closes the opening 3 of the washing tank 4.

The object to be washed 2 is accommodated in the bottom 4a of the washing tank 4 after the shape is adjusted by the user. In the present embodiment, the object to be washed 2 refers to laundry, such as woolen fabrics such as sweaters and cardigans, and scarves made of fine materials made of ultra-fine fibers. The objects to be washed 2 are cleaned by a general washing machine, and will be easily deformed or damaged due to the mechanical force acting on the objects to be washed 2. The side wall portion 4b connected to the peripheral edge of the bottom portion 4a of the washing tank 4 is inclinedly provided so as to extend from the bottom portion 4a of the washing tank 4 toward the opening portion 3.

A grip 5a is provided in front of the cover 5. When the user holds the grip 5a and rotates the cover 5 in the direction of the arrow R1 in FIG. 2, the cover 5 opens and closes the opening 3. In addition, the lid 5 is configured to be held in a state where it has been opened to a predetermined angle. After the opening part 3 is closed by the user, the cover 5 is locked by a locking device (not shown) and kept in the closed state. In addition, when the cover 5 is opened by the user, the locking device is unlocked (not shown) in conjunction with the operation of the grip 5a.

A pressurizing and decompressing portion 7 is provided inside the cover 5. In this embodiment, the pressurization and decompression unit 7 is composed of the first pressurization and decompression unit 7a and the second pressurization and decompression unit 7b. Specifically, the first pressurizing and decompressing part 7a includes a pressing part 8a, a pressurizing pump 10a, and an on-off valve 11a.

That is, the pressurizing and decompressing section 7a includes the pressing section 8a, the pressurizing pump 10a, and the on-off valve 11a. Here, the pressing portion 8a is in a flexible bag shape formed into a bellows shape such as rubber or synthetic resin. The pressure pump 10a communicates with the pressing portion 8a through the hose 9a, and supplies fluid such as gas (for example, air) or liquid (for example, water, aqueous solution, or oil) to the inside of the pressing portion 8a. The opening and closing valve 11a discharges and stops the fluid supplied to the pressing portion 8a by the opening and closing operation.

In addition, the second pressurizing and decompressing unit 7b includes the pressing unit 8b, the pressurizing pump 10b, and the on-off valve 11b, as in the pressurizing and decompressing unit 7a. Here, the pressing portion 8b has a flexible bag shape formed into a bellows shape such as rubber or synthetic resin. The pressure pump 10b communicates with the pressing portion 8b through the hose 9b, and supplies fluid such as gas or liquid to the inside of the pressing portion 8b. The opening and closing valve 11b discharges and stops the fluid supplied to the pressing portion 8b by the opening and closing operation. In addition, in this embodiment, the washing machine is described with the structure of two pressurizing and depressurizing sections, but it may be configured with one pressurizing and depressurizing section, or may be configured with three or more pressurizing and depressurizing sections can.

In the future, as long as there is no need to distinguish the symbols of a and b that display complex numbers, they may be omitted. For example, the pressurization and decompression unit 7 means the pressurization and decompression unit 7a and the pressurization and decompression unit 7b. Similarly, each of the pressing portion 8, the hose 9, the pressure pump 10, the on-off valve 11, the pressing surface 80, and the expansion and contraction portion 90 described below means the pressing portion 8a and the pressing portion 8b, the hose 9a and the hose 9b, The pressure pump 10a and the pressure pump 10b, the on-off valve 11a and the on-off valve 11b, the pressing surface 80a and the pressing surface 80b, the telescopic portion 90a and the telescopic portion 90b.

The pressurizing and depressurizing sections 7 are arranged inside the cover 5. The pressing portion 8 is attached to the washing tank 4 side of the lid body 5 and expands and contracts. That is, the pressing portion 8 is provided so as to expand and contract freely, and is configured to move forward and backward with respect to the object to be washed 2 accommodated in the bottom 4 a of the washing tank 4. As shown in FIGS. 3A and 3B, each of the pressing portion 8 a and the pressing portion 8 b includes pressing surfaces 80 a and 80 b for pressing the article 2 to be washed, and bellows-shaped expansion and contraction portions 90 a and 90 b. In addition, the pressing portions 8 a and 8 b extend until the pressing surfaces 80 a and 80 b reach the bottom 4 a of the washing tank 4.

The pressurizing and depressurizing unit 7 is provided with a constant pressure opening valve (not shown). The constant pressure opening valve opens when the inside of the pressing portion 8 becomes a predetermined pressure to discharge the fluid to the outside. This prevents the pressing portion 8 from being pressurized beyond a predetermined pressure. In addition, in the present embodiment, the fluid supplied into the pressing portion 8 will be described as air.

The pressing portion 8 is covered with a membrane body 41 made of a flexible material such as rubber. The membrane body 41 is set to a thickness that ensures sufficient strength (for example, 2 to 3 mm), and can withstand repeated pressing of the object 2 to be washed. As shown in FIG. 5A, the film body 41 is formed into a bag shape having an opening. In addition, the film body 41 is fitted on the pressing portion 8 such that the bottom 42 of the film body 41 faces the pressing surface 80 of the pressing portion 8. In addition, the membrane body 41 is provided so that the bottom portion 42 of the membrane body 41 is located between the pressing surface 80 of the pressing portion 8 and the object to be washed 2. Here, in the ring-shaped peripheral edge portion 43 provided at the opening of the membrane body 41, the cross-section of the membrane body 41 opening outward is formed in a U-shape (C-shape). As a result, the peripheral edge portion 43 of the membrane body 41 is fitted and held by the cover portion 5b facing the peripheral edge of the opening portion 3 of the washing tank 4.

In addition, in the opening portion 3, a sealing portion 44 is provided on the peripheral edge portion 43 of the film body 41. When the cover 5 is closed, the washing tank 4 and the cover 5b are hermetically and watertightly sealed by the sealing portion 44. Therefore, when the lid portion 5b is closed, the inside of the washing tank 4 becomes an airtight and watertight closed space. Thereby, when performing the steps of washing, rinsing, and dehydration, it is possible to prevent water or air from leaking from the opening 3 to the outside.

The membrane body 41 is provided with a deformation absorption portion 45 that expands and contracts in a direction in which the pressing portion 8 advances and retreats with respect to the object 2 to be washed. That is, the deformation absorbing portion 45 can be deformed in accordance with the forward and backward movement of the pressing portion 8. Furthermore, the deformation absorbing portion 45 is located between the bottom 42 and the peripheral edge portion 43 of the membrane body 41, and is provided at a position facing the upper side wall portion 4b of the inclined slope of the washing tank 4 when the lid body 5 is closed. That is, the deformation absorbing portion 45 is formed in a ring shape to surround the pressing portion 8 and deforms as the pressing portion 8 expands and contracts.

Here, the deformation absorbing portion 45 is formed to swell upward in an arc shape. In addition, the cross-sectional shape of the deformation absorbing portion 45 is provided in an S-shape (including a substantially S-shape) so that it is located inside the peripheral portion 43 of the membrane body 41. Thereby, the resistance when the membrane body 41 deforms in accordance with the expansion and contraction of the pressing portion 8 can be reduced. Along with this, the load applied to the pressurizing and depressurizing portion 7 that expands and contracts the pressing portions 8a, 8b is suppressed to be very low. In addition, the cover body 5 is provided with a release hole 46. When the shape of the membrane body 41 changes, the air inside the enclosure body 5 and the membrane body 41 can be discharged to the outside.

In addition, the lid 5 is provided with a water supply path 16 for supplying washing water to the washing tank 4. The water supply valve 14 is provided in the water supply path 16 and communicates with the inside of the washing tank 4 through the detergent box 15. Therefore, the water supply valve 14 is opened and closed to supply and stop the tap water (wash water) inside the washing tank 4.

The water level detection unit 17 detects the water level W of the washing water accumulated in the washing tank 4 (refer to FIGS. 3A and 3B ). The water level detection unit 17 is provided to communicate with the inside of the washing tank 4. For example, the water level detection unit 17 has a water level detection tank 18, a float 19, and a water level switch 20. The water level detection groove 18 is a groove having an opening at the top. The buoy 19 will float up and down in response to changes in the water level in the water level detection tank 18. The water level switch 20 will detect the water level when the buoy 19 rises to a predetermined position.

At the bottom portion 4a of the washing tank 4, a drain hole 21 is formed to discharge washing water used in a washing step or the like. The drain hole 21 communicates with the drain path 23 where the drain valve 22 is provided. The drain valve 22 is opened and closed to drain and stop the washing water in the washing tank 4.

An overflow path 24 is provided in the water tank portion 6 to drain the washing water in the washing tank 4 to the outside when the water level in the washing tank 4 becomes more than a predetermined level. The overflow path 24 has, for example, an overflow hole 24 a above the washing tank 4, and is connected to the drain path 23 on the downstream side of the drain valve 22.

In addition, a check valve (not shown) is provided in the overflow path 24. The check valve is configured to open the overflow path 24 in the washing water discharge direction of the washing tank 4 and close the overflow path 24 in the inflow direction. That is, in the cleaning step and the rinsing step, the check valve allows the washing water flowing out of the overflow hole 24a to pass through and be discharged to the outside. On the other hand, the check valve is configured to prevent outside air from flowing toward the washing tank 4 when the suction pump 27 described later sucks the air in the washing tank 4 during the dehydrating operation of the rinsing step and the dehydrating step. Inside.

A suction port 25 is provided in the central portion (including substantially the central portion) of the bottom portion 4a of the washing tank 4. When the washing object 2 is placed inside the washing tank 4, the suction port 25 is covered by the washing object 2. The dehydration path 26 is provided in communication with the suction port 25. In addition, the suction pump 27 is provided in communication with the dehydration path 26. When the washing water is sucked from the washing object 2 by the suction pump 27, the air in the washing tank 4 is also sucked.

Therefore, when the air in the washing tank 4 is sucked, the outside air is introduced into the washing tank 4 from the outside of the washing tank 4 by the outside air introduction part 28. The outside air introduction part 28 only needs to provide an opening above the washing water level accumulated in the washing tank 4. For example, in FIGS. 1, 2 and 4, the outside air introduction part 28 is provided above the water level detection part 17 communicating with the inside of the washing tank 4. In addition, in FIGS. 3A and 3B, the outside air introduction part 28 is disposed above the washing tank 4. The outside air introduction part 28 is provided with the air volume adjustment valve 29 which is an air volume adjustment part which can adjust the introduced air volume. The air volume adjustment valve 29 has a narrow air passage area portion in the flow path like a needle valve, for example, and the air volume sucked by the suction pump 27 can be adjusted. In addition, the outside air introduced into the washing tank 4 by the outside air introduction part 28 may be directly introduced from the outside of the washing machine 1 or may be introduced through the internal space of the washing machine 1.

A gas-liquid separation unit 30 is provided in the dehydration path 26. The gas-liquid separation unit 30 separates the air in the washing tank 4 from the washing water that has been sucked from the object to be washed 2 and stores the sucked washing water. The gas-liquid separation unit 30 is formed of, for example, a pressure-resistant container, and includes a primary-side vent 33 and a secondary-side vent 31. The primary vent 33 communicates with the suction pump 27 through the suction path 32. The secondary vent 31 communicates with the dewatering path 26 above. In addition, a barrier 34 is provided between the primary-side vent 33 and the secondary-side vent 31. The barrier 34 is formed by protruding downward from the top surface of the gas-liquid separation unit 30. This prevents the washing water drawn into the gas-liquid separation part 30 from the secondary vent 31 from entering the primary vent 33.

The dehydration drain 35 is provided at the bottom of the gas-liquid separation unit 30. The dehydration drain port 35 communicates with a dehydration drain path 37 having a dehydration drain valve 36 that can be opened and closed freely.

The overflow detection unit 38 is provided at a predetermined height of the inner wall of the gas-liquid separation unit 30. Specifically, the height position at which the overflow detection part 38 is provided is preferably in the range of 1/2 to 4/5 relative to the maximum water level at which the gas-liquid separation part 30 can store water.

The overflow detection unit 38 is composed of, for example, a pair of electrodes. The overflow detection unit 38 opens the dehydration drain valve 36 when it detects that the washing water stored in the gas-liquid separation unit 30 has reached a predetermined amount. Accordingly, the washing water is drained to the outside of the washing machine 1 through the dehydration drain path 37.

Here, when the washing water contains foam, if the foam adheres and remains on the barrier 34, it becomes a main cause of the odor. In order to prevent the foam from remaining, the overflow detection unit 38 is arranged so that when washing water is detected, there will be a certain space between the lower end of the barrier 34 and the washing water surface. That is, the overflow detection unit 38 detects a predetermined amount that has considered the amount of foam contained in the washing water.

The control unit 39 is a side portion arranged inside the lid 5. In addition, the operation display unit 40 is provided on the upper surface of the control unit 39. The control unit 39 controls various components based on the input information to execute the washing operation.

Specifically, the control unit 39 is input with the water level of the washing water in the washing tank 4 detected by the water level detection unit 17 and the gas-liquid separation unit 30 detected by the overflow detection unit 38 Information such as the amount of water in the wash.

In addition, the control unit 39 controls the pressure pump 10, the on-off valve 11, the water supply valve 14, the drain valve 22, the suction pump 27, the air volume adjustment valve 29, the dehydration drain valve 36, etc. based on the input information, and controls the cleaning Steps, rinsing steps, and dehydration steps to perform the washing operation. In addition, as described later, in the present embodiment, the washing course is composed of at least one of a washing step, a rinsing step, and a dehydrating step.

Here, the pressing portion 8 is configured to be extendable in a state where the lid 5 is opened. Therefore, the pressing portion 8 is provided with an extension setting portion (not shown) that sets the extension operation of the pressing portion 8. The extension setting portion presses the pressing portion 8 by the user's manual operation in the state where the lid 5 is opened. As a result, the bellows-shaped expansion and contraction portion 8d is extended, and the pressing portion 8 is extended. The extension setting unit is provided on the operation display unit 40 that performs various settings during the washing operation. In addition, the extension setting unit and the operation display unit 40 may be provided separately.

Hereinafter, the operation and function of the washing machine 1 configured as above will be described.

First, the user enters the setting contents such as the selection of the washing course and the time of each step from the operation display unit 40 provided on the front portion of the upper surface of the cover 5. The control unit 39 executes the operation of each step of the washing step, the rinsing step, and the spin-drying step as the washing stroke according to the setting content. At this time, the user can arbitrarily choose to perform only a washing step such as a washing step. In addition, the user may perform the setting operation after placing the object to be washed 2 described later.

After the user operates the grip 5a to unlock the locking device, the user will open the cover 5 and arrange the shape of the object to be washed 2 and place it on the bottom 4a of the washing tank 4. In addition, the user can fold and place the washed object 2 according to the size of the washed object 2. After the washing 2 is placed, the lid 5 is closed, and the locking device is locked, the washing tank 4 is sealed by the sealing portion 44 provided on the peripheral portion 43 of the membrane body 41. Then, the control unit 39 starts the operation according to the operation stroke set by the operation display unit 40.

In addition, when the lid 5 is closed, the membrane 41 will be placed in the washing tank 4 while the pressing portion 8 is not pressurized while the membrane 41 passes through the opening 3 of the washing tank 4 The bottom 4a is in contact with the washed object 2. Furthermore, as the lid 5 is closed, the degree of contact with the object to be washed 2 increases, and the membrane 41 is pushed back and deformed. At this time, since the membrane body 41 is provided with the deformation absorbing portion 45, the membrane body 41 is prevented from swelling outward and biting into the gap formed by the lid body 5 and the opening portion 3. That is, by changing the shape of the deformation absorbing portion 45, the lid 5 can be surely closed without difficulty.

Initially, as a washing course, the operation and function of the washing machine 1 when only the washing procedure is set will be described.

The control unit 39 executes the cleaning step. The cleaning step is composed of a water supply operation and a cleaning operation. The control unit 39 first opens the water supply valve 14 to perform the water supply operation. Accordingly, the tap water and the detergent put into the detergent box 15 are supplied as washing water from the water supply path 16 to the inside of the washing tank 4. At this time, the washing water slowly penetrates into the object to be washed 2 and becomes a state contained between the fibers of the object to be washed 2.

Then, the control part 39 detects that the washing water is supplied to the predetermined water level in the washing tank 4 through the water level switch 20 of the water level detecting part 17, and closes the water supply valve 14.

The control unit 39 executes the cleaning operation after the water supply operation is completed. During the cleaning operation, the control unit 39 first closes the on-off valve 11a of the first pressurizing and decompressing unit 7a, and drives the pressurizing pump 10a for a predetermined time or until the pressing unit 8a reaches a predetermined pressure. As a result, air is supplied into the pressing portion 8a, and the pressing portion 8a expands. As shown in FIG. 3A, the expansion and contraction portion 90a is extended, and the pressing portion 8a is extended toward the object 2 to be washed. As a result, in the object to be washed 2 below the pressing portion 8a, the portion pressed by the pressing surface 80a through the membrane body 41 is compressed, and the thickness becomes thin.

Due to the expansion of the pressing portion 8a, the object to be washed 2 is compressed and its volume changes. Along with this, the washing water contained in the object to be washed 2 is pushed out from the object to be washed 2. As a result, a water flow is generated inside the object to be washed 2, and the dirt adhering to the object to be washed 2 is separated from the fibers and the like by the water flow and removed.

At this time, the control unit 39 opens the on-off valve 11b of the second pressurizing and decompressing unit 7b, so that the pressing unit 8b can be retracted. Therefore, the washing water contained in the object to be cleaned 2 will be inside the object to be cleaned 2 from below the pressing portion 8a to below the pressing portion 8b in the direction indicated by the arrow A (see FIG. 3A) mobile. Then, the washing water thus moved pushes the pressing surface 80b of the pressing portion 8b upward while expanding the object 2 under the pressing portion 8b. As a result, air is discharged from the open on-off valve 11b, and the pressing portion 8b contracts.

Next, the control unit 39 closes the on-off valve 11b of the second pressurizing and decompressing unit 7b, and drives the pressurizing pump 10b for a predetermined time or until the pressing unit 8b reaches a predetermined pressure. As a result, air is supplied into the pressing portion 8b, and the pressing portion 8b expands. As shown in FIG. 3B, when the telescopic portion 90b is extended and the pressing portion 8b is extended toward the object to be washed 2, the portion of the object 2 to be washed below the pressing portion 8b that is pressed by the pressing surface 80b through the membrane 41 Will be compressed and the thickness will be thinner.

Due to the expansion of the pressing portion 8b, the object to be washed 2 is compressed and the volume changes. Along with this, the washing water contained in the object to be washed 2 is squeezed out of the object to be washed 2. As a result, a water flow is generated inside the object to be washed 2, and the dirt attached to the object to be washed 2 is separated from the fibers by the water flow and removed.

At this time, the control unit 39 opens the opening and closing valve 11a of the first pressurizing and decompressing unit 7a, so that the pressing unit 8a can be contracted. Therefore, the washing water contained in the object to be cleaned 2 will be inside the object to be cleaned 2 from below the pressing portion 8b to below the pressing portion 8a in the direction indicated by the arrow B (see FIG. 3B) mobile. Then, the washing water thus moved pushes the pressing surface 80a of the pressing portion 8a upward while expanding the object 2 under the pressing portion 8a. As a result, air is discharged from the open on-off valve 11a, and the pressing portion 8a contracts.

In this way, during the cleaning operation, the pressing portion 8a and the pressing portion 8b are repeatedly expanded and contracted at different time points that become interactive (e.g., pressurized by the expansion of the pressing portion 8a for 1 second, and the pressure of the pressing portion 8b The pressure reduction by the contraction for 1 second) for a predetermined time (for example, 10 minutes), thereby exerting a pressure washing effect on the object to be washed 2. That is, the mechanical force caused by stirring or slap cleaning does not act on the object to be washed 2, and a multi-directional water flow can be generated inside the object to remove dirt.

At this time, since the film body 41 is provided so as to enclose the pressing portions 8a and 8b, it is possible to prevent the object 2 from being caught between the two pressing portions 8a and 8b. In addition, in the pressing portions 8a and 8b, since the bellows-shaped expansion and contraction portions 90a and 90b are covered by the membrane body 41, the expansion and contraction portions 90a and 90b do not come into contact with the washing including the dirt in the washing tank 4 Water while keeping it clean. In addition, water droplets or dirt attached to the membrane body 41 can be easily wiped off by the user, and can be kept clean.

As described above, the case where only the washing step is performed as the washing stroke has been described.

Next, a description will be given of a case where a washing course from the washing step to the dehydration step is consistently executed. The control unit 39 will perform the rinsing step and the dehydrating step described below after the above washing step.

In the rinsing step, for example, after the dehydration operation, the water storage rinsing operation is performed. Hereinafter, the dehydration operation in the rinsing step is marked as an intermediate dehydration operation. As described later, the dehydration operation is also performed in the dehydration step. The dehydration operation in this dehydration step is called a final dehydration operation, to distinguish it from the intermediate dehydration operation in the rinsing step.

In addition, the rinsing step can be repeated several times. The intermediate dehydration action can also be carried out between repeated washing steps.

Intermediate dehydration actions include: drainage, compression, and attraction. First, the control unit 39 drains water. That is, by the control unit 39 opening the drain valve 22, the washing water inside the washing tank 4 is drained from the drain hole 21 through the drain path 23 to the outside of the washing machine 1.

After the drainage is completed, the control unit 39 performs compression. That is, the control unit 39 closes the on-off valves 11a and 11b in a state where the drain valve 22 is opened, and drives the pressure pumps 10a and 10b. As a result, the washing object 2 is pressed and compressed by the expansion of the pressing portions 8a and 8b, and a part of the washing water contained in the washing object 2 is forcibly discharged.

After the compression, the control unit 39 performs suction. That is, the control unit 39 closes the drain valve 22 and drives the suction pump 27 while the object 2 is pressed. Thereby, the outside air is introduced into the washing tank 4 from the outside air introduction part 28 through the air volume adjustment valve 29. With the external air introduced, the washing water and air in the washing tank 4 are sucked from the suction port 25 and are transported to the gas-liquid separation unit 30 through the dehydration path 26. In addition, the sucked air is discharged to the outside of the washing machine 1 by the suction pump 27. On the other hand, the washing water is accumulated in the gas-liquid separation unit 30. By this, dehydration of the object to be washed 2 is performed.

In the rinsing step, following the intermediate dehydration operation, the control unit 39 then performs the water storage rinsing operation. First, the control unit 39 performs water supply. The control unit 39 opens the water supply valve 14 and supplies a predetermined amount of washing water to the inside of the washing tank 4. At this time, all the detergent in the detergent box 15 will be used up in the above-mentioned cleaning step. Therefore, the washing water during the water storage rinsing operation is tap water.

Then, similarly to the cleaning operation, the pressure pumps 10a and 10b are driven to alternately expand and contract the pressing portions 8a and 8b. By this, the concentration of the washing water in the washing object 2 is diluted. Above, the rinsing step ends.

Repeat this rinsing step multiple times (for example, 2 times). At this time, the same intermediate dehydration operation as described above is also performed between the first rinse step and the second rinse step.

Next, the control unit 39 executes the dehydration step after performing the above-mentioned rinse step.

In the dehydration step, dehydration will be performed. Hereinafter, the dehydration operation in the dehydration step is marked as the final dehydration operation. The final dehydration action includes: drainage, compression, and attraction.

First, the control unit 39 drains the washing water used in the washing step. That is, by the control unit 39 opening the drain valve 22, the washing water inside the washing tank 4 is drained from the drain hole 21 through the drain path 23 to the outside of the washing machine 1. At this time, the outside air introduction part 28 is opened by the control part 39, and the inside of the washing tank 4 will communicate with the outside. As a result, the washing water is smoothly discharged. In addition, the air volume adjustment valve 29 is opened by the control unit 39, both the on-off valves 11a and 11b are closed, and the dehydration drain valve 36 is closed.

The control unit 39 compresses after the drainage is completed. That is, the control unit 39 drives both the pressure pumps 10a and 10b almost simultaneously (including at the same time) in a state where the drain valve 22 is opened and both the on-off valves 11a and 11b are closed. As a result, air is supplied into the pressing portions 8a and 8b, and the object to be washed 2 is pressed and compressed due to the expansion of the pressing portions 8a and 8b. Therefore, a part of the washing water contained in the object to be washed 2 is forcibly discharged, and is drained from the drain hole 21 through the drain path 23 to the outside of the washing machine 1. With such a configuration and function of the pressing portion 8, the pressing surface 80 can be closely pressed to the object to be washed 2 via the membrane body 41 and pressed uniformly. That is, the washing water contained in the object to be washed 2 can be forced out.

After the compression is completed, the control unit 39 performs suction. That is, after the control unit 39 stops the pressurizing pumps 10a and 10b and a predetermined time T1 (for example, 1 minute) elapses, the drain valve 22 is closed and driven while the object to be washed 2 is pressed. Attract pump 27. As a result, the air and water inside the washing tank 4 are attracted into the gas-liquid separation unit 30. At this time, as shown in FIG. 4, the washing tank 4 is decompressed from the atmosphere, and the membrane body 41 presses the object to be washed 2 by the pressure difference. The outside air is introduced into the cleaning tank 4 from the outside air introduction part 28, and the outside air enters the inside of the object to be cleaned 2 that has been pressed through the membrane body 41. The pressure inside the washing tank 4 is maintained at a predetermined pressure by, for example, a constant pressure opening valve, etc., and the object to be washed 2 is maintained in a state of being pressurized by a certain pressure.

The outside air introduced into the washing tank 4 from the outside air introduction part 28 squeezes out the washing water remaining between the fibers of the object 2 to be washed. Then, the outside air is attracted together with the washing water and moves toward the suction port 25. The washing water transported to the suction port 25 by external air is left in the fibers due to surface tension. However, the washing water is separated from the fibers by the shearing force caused by the air flow, and is transported toward the gas-liquid separation unit 30 from the suction port 25 through the dehydration path 26.

The air sucked together with the washing water enters from the secondary side vent 31 toward the gas-liquid separation part 30, and is sucked from the primary side vent 33 provided above the gas-liquid separation part 30 by the suction pump 27 discharge. Also, the washing water will fall from the secondary side vent 31 due to gravity, and will not invade the primary side vent 33 by the barrier 34 provided between the primary side vent 33 and the secondary side vent 31 , Will be stored in the gas-liquid separation unit 30.

Here, when the washing water and air inside the washing tank 4 are attracted, these will pass through the path of least resistance. Therefore, when the dehydration operation is performed, a short circuit path that does not contain washing water is formed in the object to be washed 2, and the flow of air may be concentrated on the short circuit path. As a result, the attraction of the washing water does not progress. However, in this embodiment, since the object to be cleaned 2 is pressed by the pressing portions 8a and 8b at any time with a constant pressure through the membrane body 41, the formation of a short-circuit air path is suppressed. As a result, together with the outside air introduced into the washing tank 4, the suction and dehydration of the washing water will proceed without stagnation.

In this way, the pressing portion 8 can be inflated by the suction pump 27. Furthermore, in the membrane body 41, a deformation absorbing portion 45 is provided above the inclined portion of the side wall portion 4b of the washing tank 4. As a result, the deformation absorbing portion 45 changes its shape in such a manner as to expand and contract in the direction in which the pressing portion 8 advances and retreats, and can follow the operation of the pressing portion 8 without difficulty. In addition, the surface of the membrane body 41 in contact with the object to be washed 2 is configured to be smooth. Therefore, the pressing surface 80 of the pressing portion 8 can be pressed against the object to be washed 2 with the film body 41 interposed therebetween and pressed uniformly. Thereby, outside air is introduced into the inside of the object to be washed 2, and a predetermined dehydration performance can be obtained.

In addition, in the dehydration step, washing water may be accumulated in the gas-liquid separation unit 30 in excess of the set amount. When the overflow detection unit 38 detects this situation, the control unit 39 stops driving the suction pump 27. Then, the dehydration drain valve 36 is opened to drain the washing water accumulated in the gas-liquid separation unit 30 to the outside of the washing machine 1. Next, after the washing water is drained, the control unit 39 closes the dehydration drain valve 36 again and drives the suction pump 27. As a result, the control unit 39 attracts the washing water together with the outside air introduced into the washing tank 4.

The control unit 39 opens the on-off valve 11 after a predetermined time T2 (for example, 4 minutes) elapses from the above-mentioned suction. In addition, the control unit 39 stops the driving of the pressure pump 10 and the suction pump 27.

As a result, the air in the pressing portion 8 is discharged from the on-off valve 11 and the pressure inside the washing tank 4 is restored to atmospheric pressure. The object to be washed 2 is released by the pressing by the pressing portion 8, and the dehydration step is completed.

By the series of operations described above, after the dehydration step is completed, the control unit 39 discharges the washing water accumulated in the gas-liquid separation unit 30 through the dehydration drain path 37 to end the washing process.

In addition, the above-mentioned final dehydration operation is the same operation as the intermediate dehydration operation. Here, the intermediate dehydration operation includes an intermediate dehydration operation performed in the rinsing step, and an intermediate dehydration operation performed between repeatedly performing the rinsing step a plurality of times. In addition, the predetermined times T1 and T2 are also set to the most appropriate in each intermediate dehydration operation.

After the dehydration step is completed, the cover 5 will be opened by the user, and the washed object 2 will be removed from the washing tank 4. In addition, it has been constructed so that the lid 5 can be kept open when the washing is not in use. In this state, the user operates the elongation setting portion to extend the pressing portion 8 and maintain the membrane body 41 in the stretched state. Thereby, the membrane body 41 becomes a stable state that has been pressed by the pressing portion 8. The user can easily wipe off water droplets or dirt attached to the membrane body 41. As a result, the membrane 41 that presses on the object to be washed 2 can be kept clean.

In addition, both the pressurizing pumps 10a and 10b are driven to supply air to the inside of the pressing portions 8a and 8b to extend both the pressing portions 8a and 8b. As a result, the membrane body 41 will be stretched and the deformation absorption portion 45 will be extended, so that the membrane body 41 can be pushed out in a stable state. Thereby, the user can easily wipe off the dirt and the like attached to the film body 41.

In addition, in this embodiment, the pressurizing and decompressing portion 7 is composed of a flexible pressing portion 8, a pressure pump 10 that supplies air into the pressing portion 8 to expand it, and a pressing portion 8 The internal air is discharged and contracted by the on-off valve 11. However, it is not limited to this. For example, instead of the on-off valve 11, a pressure reduction pump (not shown) may be used to perform pressure reduction for contracting the pressing portion 8. In addition, the pressure pump 10 may be reversed to be used as a decompression pump.

In addition, in this embodiment, the fluid supplied to the inside of the pressing portion 8 to expand the pressing portion 8 is air, but it is not limited to this, and may be other gas or liquid. In the case of gas, as long as the surrounding air is aspirated by a pressure pump or the like as in the present embodiment, and there are few restrictions during exhaust, it is very convenient. On the other hand, in the case of a liquid, water, an aqueous solution, or oil may be used. In addition, it is preferable to have a storage portion that stores liquid. Since the density of the liquid is higher than that of air, and the elasticity is not as great as that of gas, the pressing portion 8 can be surely expanded.

As described above, the washing machine 1 of the first embodiment includes: the washing tank 4 accommodating the object to be washed 2 and the washing water; the lid body 5 that opens and closes the opening 3 of the washing tank 4; and the pressing portion 8 is provided in The cover 5 is flexible and retractable; the membrane body 41 covers the pressing portion 8; the pressurizing and decompressing portion 7 causes the pressing portion 8 to advance and retreat with respect to the object 2 contained in the washing tank 4; and the control portion 39 controls The pressurizing and depressurizing portion 7 is formed of a flexible material, and a deformation absorbing portion 45 is provided on the membrane 41. The deformation absorbing portion 45 can conform to the pressing portion 8 to the object 2 The deformation of the advancing and retreating.

With this configuration, the pressing portion 8 is covered with the membrane body 41, and the bellows-shaped expansion and contraction portion 8d is not exposed to the washing tank 4, and the pressing portion 8 can be protected. Therefore, the detergent component contained in the washing water or the dirt washed away from the object to be washed 2 does not adhere to the pressing portion 8 and can be kept clean. In addition, the deformation absorption portion 45 of the membrane body 41 responds to the operation of the pressing portion 8, and the membrane body 41 can follow the forward and backward movement of the pressing portion 8 without difficulty so that the pressing force acts on the object 2 to be washed. In addition, the resistance of the membrane body 41 when following the operation of the pressing portion 8 can be reduced, and the load applied to the pressurizing and decompressing portion 7 that performs the expansion and contraction operation of the pressing portion 8 can be suppressed very low.

In addition, the pressing portion 8 is provided so as to be extensible in a state where the lid 5 is opened, and in the membrane body 41, the deformation absorbing portion 45 deforms as the pressing portion 8 is extended.

With this configuration, when the washing is not in use, the pressing portion 8 can be extended with the lid 5 opened. In addition, the membrane body 41 is stretched by giving potential energy by the extension of the pressing portion 8. Thereby, the user can make the deformation absorbing portion 45 extended, and can easily wipe off water droplets or dirt attached to the membrane body 41.

In addition, the film body 41 is configured in a bag shape having an opening, and is fitted on the pressing portion 8 such that the bottom 42 of the film body 41 faces the pressing surface 80 of the pressing portion 8, and the film body 41 has a peripheral portion 43 The aforementioned peripheral edge portion 43 is held in the cover portion 5b facing the peripheral edge of the opening portion 3 of the washing tank 4, and the deformation absorption portion 45 is located between the bottom portion 42 of the membrane body 41 and the peripheral edge portion 43, and is configured to surround in a ring shape Around the pressing portion 8.

With this configuration, the membrane body 41 can follow the advancing and retreating motion of the pressing portion 8 without difficulty, so that the pressing force acts on the object 2 to be washed. In addition, the resistance when the membrane body 41 conforms to the operation of the pressing portion 8 can be reduced. As a result, the load applied to the pressurizing and decompressing portion 7 can be suppressed to be very low. In addition, since the deformation absorbing portion 45 is provided more inside than the peripheral edge portion 43 of the membrane body 41, the resistance during deformation can be further reduced.

In addition, the washing tank 4 is provided with a side wall portion 4b connected to the periphery of the bottom portion 4a of the washing tank 4 and inclined toward the opening 3, and the deformation absorbing portion 45 is provided opposite to the upper portion of the side wall portion 4b s position. With this configuration, the membrane body 41 can be brought into contact with a wide range of the object to be cleaned 2 accommodated in the bottom 4 a of the cleaning tank 4. Therefore, the object to be washed 2 can be pressed uniformly.

In addition, the membrane body 41 is hermetically and watertightly sealed with the washing tank 4 at the peripheral edge portion 43. With this configuration, the opening 3 of the washing tank 4 and the lid 5 provided with the pressing portion 8 and the membrane body 41 can be surely hermetically joined to each other, and the configuration can be simplified.

In addition, there are a plurality of pressing portions 8, and the film body 41 includes a plurality of pressing portions 8. With this configuration, the membrane body 41 is supported by the plurality of pressing portions 8 to be in a stable state when it is not used for washing. With this, the user can easily wipe off dirt and the like attached to the film body 41. In addition, it is possible to prevent the object to be cleaned 2 from biting into the pressing portions 8 that are alternately telescopic.

Furthermore, it has: a suction pump 27 to suck the washing water from the object to be washed 2; and an outside air introduction part 28 to introduce the outside air into the washing tank 4, and the control part 39 will perform a washing step (washing Operation) and at least one of the dehydration step (dehydration operation), the aforementioned washing step is performed by shrinking and expanding the object to be washed 2 by pressing and releasing the object to be washed 2 by the pressing portion 8 In the pressure washing, the dehydration step is to dehydrate the suction water by the suction pump 27 and the introduced external air.

With this configuration, for the object 2 to be washed which is not suitable for applying mechanical force to the object to be washed 2 or to be squeezed, the object to be washed 2 is pressed for pressure washing in the cleaning step. In the dehydration step, the washing water can be sucked from the object 2 to be sucked and dehydrated. With this, at least one of washing and dehydration can be effectively performed without damaging the object to be washed 2.

That is, in the washing step or the rinsing step, the washing object 2 is contracted and expanded by pressing and releasing the washing object 2 by the pressing portion 8, so that the washing object can be stirred without In the case of 2, multi-directional water flow is generated inside the object to be washed 2. With this, it is possible to suppress washing or deformation of the cloth of the laundry 2 which is not suitable for the mechanical force to act on the laundry 2 for cleaning, and it is possible to perform washing well.

In the dehydration step, the plurality of pressing portions 8 are simultaneously expanded to press the object 2 to be washed. In addition, the suction pump 27 attracts the washing water and the introduced external air, so that it is possible to suppress the fabric damage or deformation of the washing object 2 that is not suitable for the mechanical force to act on the washing object 2 to be squeezed. , And good dehydration. (Embodiment 2)

7 is a schematic diagram of a film body of a washing machine in Embodiment 2 of the present invention. The feature of the second embodiment is that the inner surface of the film body 41 is provided with a convex portion 47 facing the pressing surface 80 of the pressing portion 8. Other configurations are the same as in the first embodiment, the same symbols are given to the same configurations, and the detailed description refers to the first embodiment.

In FIG. 7, a convex portion 47 protruding toward the pressing surface 80 side of the pressing portion 8 is provided on the inner surface of the bottom portion 42 of the film body 41. The convex portion 47 is formed to be, for example, twice the thickness of the bottom portion 42 (for example, 2 to 3 mm). In order not to impair the flexibility of the bottom portion 42, the convex portion 47 is set to a relatively small area, and a plurality of protrusions are provided at intervals.

As described above, the film body 41 of the present embodiment is provided with the convex portion 47 on the inner surface facing the pressing surface 80 of the pressing portion 8.

With this configuration, the film body 41 can be prevented from being worn due to contact with the pressing portion 8, resulting in a thinner film body 41, and the durability of the film body 41 can be improved. (Embodiment 3)

8 is a schematic diagram of a film body of a washing machine in Embodiment 3 of the present invention. The special feature of the third embodiment is that the bottom 42 of the membrane body 41 and the pressing surface 80 of the pressing portion 8 are connected. Other configurations are the same as in the first embodiment, the same symbols are given to the same configurations, and the detailed description refers to the first embodiment.

In FIG. 8, a fixing portion 48 is provided on the inner surface of the bottom 42 of the membrane body 41. The fixing portion 48 is fixed to the outer peripheral portion of the pressing surface 80 provided on the pressing portion 8. In addition, the pressing portion 8 and the bottom portion 42 of the membrane body 41 are connected by a fixing portion 48 (also referred to as a connecting portion). Here, the fixing portion 48 may be provided on the entire circumference of the outer circumference of the pressing surface 80 or may be provided on a part of the outer circumference.

As described above, in the film body 41 of this embodiment, the pressing surface 80 of the pressing portion 8 and the bottom 42 of the film body 41 are connected.

With this configuration, when the pressing portion 8 is contracted, the membrane body 41 also moves in a direction away from the object to be washed 2 in accordance with the action of the pressing portion 8, so that the object to be washed 2 in the washing process, that is, the expansion of the clothes , Shrinking will become easier. By this, the cleaning performance will be improved.

In addition, in the present embodiment, one fixing portion 48 has been described, but it is not limited to this. The fixing portion 48 may be plural.

In addition, the connection between the bottom 42 of the membrane body 41 and the pressing surface 80 of the pressing portion 8 may be different from the fixing portion 48. For example, the bottom 42 and the pressing surface 80 may be surface-bonded.

In addition, the above embodiments can be implemented in combination with other embodiments.

As described above, the washing machine of the present invention can be used as a washing machine because it can make the film body conform to the operation of the pressing portion to apply the pressing force to the object to be washed.

1: washing machine 2: the object to be washed 3: opening 4: Wash tank 4a, 42: bottom 4b: Side wall 5: Cover 5a: Grip 5b: cover 6: sink part 6a: hinge 7: Pressurization and decompression section 7a: 1st pressurization and decompression section 7b: Second pressurization and decompression section 8, 8a, 8b, 56: pressing part 8d, 55, 90, 90a, 90b: telescopic section 9, 9a, 9b: hose 10, 10a, 10b: booster pump 11, 11a, 11b: On-off valve 14: Water supply valve 15: lotion box 16: Water supply path 17: Water level detection department 18: Water level detection slot 19: Buoy 20: Water level switch 21: Drain hole 22: Drain valve 23: Drainage path 24: overflow path 24a: overflow hole 25: attraction 26: Dehydration path 27: Attract pumps 28: Outside air introduction section 29: Air volume adjustment valve 30: Gas-liquid separation section 31: Secondary side vent 32: Attraction path 33: Primary side vent 34: Barrier 35: Dehydration drain 36: Dehydration drain valve 37: Dehydration drainage path 38: Overflow detection department 39: Control Department 40: Operation display section 41: Membrane 43: Perimeter 44: Sealed part 45: deformation absorption part 46: release hole 47: convex part 48: fixed part 51: sink 52: Space below 53: Pressure relief device 54: pressure responsive body 57: Cover 58: Washing machine frame 59: axis 80, 80a, 80b: pressing surface A, B, R1: Arrow W: water level of washing water

1 is a cross-sectional view of a main part of a washing machine in Embodiment 1 of the present invention. 2 is a cross-sectional view of a main part of a state in which a lid of a washing machine in Embodiment 1 of the present invention is opened. 3A is a schematic diagram showing the operation of the washing machine in the first embodiment of the present invention during cleaning. 3B is a schematic diagram showing the operation of the washing machine in the first embodiment of the present invention during cleaning. Fig. 4 is a cross-sectional view of main parts during the spin-drying operation of the washing machine in Embodiment 1 of the present invention. 5A is a schematic diagram showing the action of the film body of the washing machine in Embodiment 1 of the present invention. 5B is a schematic diagram showing the action of the film body of the washing machine in Embodiment 1 of the present invention. 6 is a cross-sectional view of a main part of a state where the cover of the washing machine in Embodiment 1 of the present invention is opened and the film is stretched by the pressing portion. 7 is a schematic diagram of a film body of a washing machine in Embodiment 2 of the present invention. 8 is a schematic diagram of a film body of a washing machine in Embodiment 3 of the present invention. 9 is a configuration diagram of a conventional dehydration device.

1: washing machine

2: the object to be washed

4: Wash tank

4a: bottom

4b: Side wall

5: Cover

5a: Grip

5b: cover

6: sink part

7a: 1st pressurization and decompression section

7b: Second pressurization and decompression section

8a, 8b: pressing part

9a, 9b: hose

10a, 10b: booster pump

11a, 11b: On-off valve

14: Water supply valve

15: lotion box

16: Water supply path

17: Water level detection department

18: Water level detection slot

19: Buoy

20: Water level switch

21: Drain hole

22: Drain valve

23: Drainage path

24: overflow path

24a: overflow hole

25: attraction

26: Dehydration path

27: Attract pumps

28: Outside air introduction section

29: Air volume adjustment valve

30: Gas-liquid separation section

31: Secondary side vent

32: Attraction path

33: Primary side vent

34: Barrier

35: Dehydration drain

36: Dehydration drain valve

37: Dehydration drainage path

38: Overflow detection department

39: Control Department

40: Operation display section

41: Membrane

45: deformation absorption part

46: release hole

Claims (9)

A washing machine with: Washing tank, containing the washed objects and washing water; The lid body opens and closes the opening of the washing tank; The pressing portion is provided on the aforementioned cover body and is free to expand and contract; The film body covers the aforementioned pressing portion; Pressurize and depressurize the portion so that the pressing portion advances and retreats with respect to the object to be washed contained in the washing tank; and The control unit controls the aforementioned pressurization and decompression unit, In addition, the film body is made of a flexible material, Furthermore, a deformation absorbing portion is provided on the film body, and the deformation absorbing portion can be deformed in accordance with the advancement and retreat of the washing object by the pressing portion. The washing machine according to claim 1, wherein the pressing portion is provided to be extendable in a state where the cover is opened, In the film body, the deformation absorbing portion deforms as the pressing portion extends. According to the washing machine of claim 1 or 2, wherein the aforementioned film body is formed into a bag shape having an opening, Moreover, the bottom of the film body is placed on the pressing portion in such a manner that the pressing surface of the pressing portion faces the pressing portion, The membrane body has a peripheral edge portion, and the peripheral edge portion is held in a cover portion opposed to the peripheral edge of the opening portion of the washing tank, The deformation absorbing portion is located between the bottom portion and the peripheral edge portion of the film body, and is formed in a ring shape to surround the periphery of the pressing portion. The washing machine according to any one of claims 1 to 3, wherein the washing tank is inclinedly arranged in such a manner that the side wall portion is connected to the periphery of the bottom of the washing tank and extends toward the opening, The deformation absorbing portion is provided at a position facing the upper portion of the side wall portion when the lid is closed. The washing machine according to claim 3 or 4, wherein the membrane body is air-tightly and water-tightly sealed with the washing tank at the peripheral edge portion. The washing machine according to any one of claims 1 to 5, which has a plurality of the aforementioned pressing parts, The membrane body includes the plurality of pressing portions. The washing machine according to any one of claims 1 to 6, wherein the film body is provided with a convex portion facing the pressing surface of the pressing portion. The washing machine according to any one of claims 1 to 7, wherein the membrane body is provided with a coupling portion coupled to the pressing surface of the pressing portion. If the washing machine according to any one of claims 1 to 8, it further has: An attraction unit that attracts the washing water from the object to be washed; and The outside air introduction part introduces outside air into the inside of the washing tank, In addition, the control unit executes at least one of a washing operation and a spin-drying operation. The washing operation causes the washing object to shrink and expand by pressing and releasing the washing object by the pressing portion While performing pressure washing, the dehydration operation sucks the washing water and the introduced outside air by the suction part to perform dehydration.

Images