JP3635649B1 - Multi-air switching valve device with built-in vibration-pressure conversion function - Google Patents

Abstract

In a washing process of a washing machine 90, compressed air B in which air present in an air trap 92 provided on the outer peripheral portion of the washing tub 91 is compressed by the amount of water supplied to the washing tub 91 of the washing machine 90. Is transferred to the water level sensor 95 of the washing machine 90, and in the dehydration process of the washing machine 90, the rolling vibration of the washing tub 91 due to the bias of the laundry in the washing tub 91 is converted into pressure (compressed air A). Further pressurization is performed according to the amount of rolling vibration, the compressed air B from the air trap 92 is disabled, the compressed air A is transmitted to the water level sensor 95, and either the compressed air A or the compressed air B is switched to It can be transmitted to the water level sensor 95.
A plunger pump section 40 comprising a plunger unit 15 and a cylinder 30, a check valve unit section 50, a valve seat body 60 incorporating a movable iron core A70 and a movable iron core B75, and a communication body 80 having a solenoid 79. And an electromagnetic switching valve unit 89.
[Selection] Figure 3

Description

  The present invention relates to an auxiliary device that is mounted for accurately continuing smooth automatic operation of a fully automatic washing machine (hereinafter referred to as a washing machine), and more specifically, in the washing process of a washing machine, Compressed air B in which the air present in the air trap is compressed by the amount of water supplied to the tub (also serves as a dehydration tub) is transmitted to the water level sensor. Is converted into pressure (compressed air A), further pressurized according to the amount of roll vibration, the compressed air B from the air trap is made invalid, and the compressed air A is transmitted to the water level sensor. The present invention relates to a vibration-pressure conversion function built-in air multi-way switching valve device capable of switching two compressed airs B and independently transmitting only one compressed air to the water level sensor.

  Conventionally, in the washing process of the washing machine, the compressed air B in which the air present in the air trap provided in the outer peripheral portion of the washing tub is compressed according to the amount of water supplied to the washing tub (dehydration tub) of the washing machine. As a water level (pressure) sensor suitable for detection, a cylinder for storing a compressed spiral ridge (for example, stainless steel wire) is projected from a main body of a casing (for example, polypropylene resin), and the compressed vortex ridge storage cylinder is provided. A cylinder is closed inside, a compression spiral ridge adjustment screw for adjusting the elastic force of the compression vortex ridge (spring, compression coil spring) is screwed, and a copper wire (for example, enamel wire) is inserted into the casing in a bobbin (for example, Nylon resin) coil L and a soft rubber diaphragm are arranged apart from each other, and a compression spiral is formed in the cavity of coil L in a direction perpendicular to the diaphragm surface. A piece cylinder that receives a force is installed, and a ring-shaped cylindrical magnetic member (core) interlocking with a diaphragm (for example, rubber) is accommodated in the piece cylinder, and a cover body is provided so as to sandwich the casing and the diaphragm. A water level (pressure) sensor (see, for example, Patent Document 1) is known.

Conventionally, in a dehydration process of a washing machine, as a vibration detection device that detects roll vibration of a washing tub due to a bias of laundry in a washing tub, an unbalance detection switch (for example, opening and closing a switch contact with a vibration detection lever) Patent Document 2) is known.
However, normally, the switch contacts of the unbalance detection switch are always in contact with each other, and a weak voltage (for example, DC + 5V) is applied. However, when fine dust or the like adheres to the switch contacts, the switch contacts are in contact with each other. Insufficient continuity may occur, or when the surface of the switch contact is oxidized by water droplet adhesion or high humidity to produce an insulating oxide film, for example, a switch to which a low voltage (for example, AC 100 V) is applied Insulation oxide film breakdown due to arc discharge that can be expected when the contact is opened may not be expected, and there is a possibility that conduction failure may occur, and roll vibration may not be detected with high accuracy.
Also, if the washing tub oscillates continuously or intermittently and the vibration detection lever displaces more than the predetermined displacement amount even in the initial roll vibration, the switch contacts are separated and it is determined that the roll vibration state. Since the dehydration process is stopped, the smooth operation of the automatic operation may be hindered even in the case of rolling vibration that does not interfere with the dehydration process itself.

There has been proposed a vibration detection device that solves some problems of such an unbalance detection switch, detects the amount of roll vibration in an analog manner, and determines the degree of roll vibration based on the amount of displacement. .
For example, an unbalance sensor whose pressure changes due to displacement due to rolling vibration of the laundry tub and the jumping out of the laundry is provided on the outer periphery of the laundry tub so as to face the laundry tub, and the pressure change of the unbalance sensor is By connecting the unbalance sensor to a water level (pressure) sensor that outputs an analog signal, the displacement due to the roll vibration of the washing tub is output in an analog manner as an electrical pressure signal due to a pressure change. An unbalance detection device (see, for example, Patent Document 3) is known.
By using an air bag that connects the unbalance sensor to the water level (pressure) sensor with a pressure guiding tube, it can be easily installed with a simple structure, and the displacement can be detected reliably as a change in air pressure, and the water level (pressure) ) Separately use a water level (pressure) sensor to detect the displacement of the washing tub by sharing the sensor with the water level sensor connected to the air trap of the washing tub with a pressure guiding tube to detect the water level in the washing tub There is no need to arrange it specially, and the pressure guiding tube from the unbalance sensor is connected to the water level (pressure) sensor by connecting the pressure guiding tube from the unbalance sensor and the pressure guiding tube from the air trap of the washing tub. Is formed into a large diameter and a pressure guiding tube from the air trap of the washing tub is formed into a small diameter, so that the pressure guiding tube from the unbalance sensor is connected to one water level (pressure) sensor. Even if the pressure guiding tube from the air trap of the washing tub is connected in communication, the pressure from the unbalance sensor can be prevented from escaping toward the washing tub, and a rapid pressure change from the unbalance sensor can be quickly performed. There are features that can be captured.

Registered Utility Model No. 3021169 Japanese Patent Publication No. 7-20520 JP-A-10-263275

However, since the pressure guiding tube from the air bag, which is an unbalance sensor, and the pressure guiding tube from the air trap of the washing tub are connected in a connected state by the connecting pipe, for example, in the washing process of the washing machine, Assuming that the air bag, which is an unbalance sensor, is pressed for some reason while water is being supplied to the washing tub, the water level (pressure) sensor may erroneously recognize the amount of water being supplied to the washing tub of the washing machine. There is a problem that is expected.
In the dehydration process of the washing machine, even a slight pressure (air) escapes to the air trap of the washing tub is generated, the pressure of the air bag is weakened, and the analog signal obtained from the water level (pressure) sensor is small or analog There is a problem that the amount of signal change is small.

  The present invention has been made in view of the above-described problems of the prior art, and the object of the present invention is not simply a connecting pipe between pressure guiding tubes, but in a washing process of a washing machine. Compressed air B in which air present in an air trap provided on the outer periphery of the washing tub is compressed by the amount of water supplied to the washing tub of the machine is transmitted to the water level sensor of the washing machine, and in the dehydration process of the washing machine Converts the rolling vibration of the washing tub due to the bias of the laundry in the washing tub into pressure (compressed air A) and further pressurizes it according to the amount of rolling vibration, invalidating the compressed air B from the air trap An attempt is made to provide a vibration-pressure conversion function built-in air multi-way switching valve device capable of transmitting compressed air A to the water level sensor and switching between the compressed air A and B and transmitting the compressed air to the water level sensor independently. To do .

In order to achieve the above object, the vibration-pressure conversion function built-in air multi-way switching valve device of the present invention is configured (hardware)
Plunger pump unit consisting of a plunger unit and a cylinder (a type of reciprocating pump. A pump in which a plunger reciprocates and feeds water. Suitable for high pressure, but suction and discharge are alternately performed, so the amount of water fed pulsates. An electromagnetic switching valve portion comprising a check valve unit portion, a valve seat body containing the movable iron core A and the movable iron core B, and a communication body having a solenoid, a washing machine mounting plate, And is disposed horizontally at the upper part of the washing tub of the washing machine, and in response to the rolling vibration of the washing tub, the air present in the cylinder is compressed to become compressed air A and transmits the compressed air A. Air with built-in vibration-pressure conversion function that can be switched off and sent to the water level sensor of the washing machine, or the compressed air B from the air trap of the washing machine can be transmitted and shut off and sent to the water level sensor Square a switching valve device,
The plunger unit includes a tank contact rod formed of a synthetic resin molded member (for example, polypropylene resin), a medium-diameter compression spiral ridge (for example, stainless steel wire) that constantly urges and urges the tank contact rod, Is closed, one end of the cylinder is opened, the medium diameter compressed spiral ridge and a part of the tank contact rod are accommodated in the cylinder inner periphery from the one end of the cylinder, and a collar is provided on the cylinder outer periphery. A plurality of medium-diameter hermetic annular elastic bodies (for example, soft rubber O-rings) are provided around the outer periphery of the cylinder so as to abut one side and communicate from the axial direction of the other end of the cylinder to the one side of the flange. A plunger of a cylinder formed of a synthetic resin molding member (for example, polypropylene resin) having a communication hole (generic name of a mechanical part that reciprocates in order to compress and send a fluid. A piston is a kind of the plunger) In the outer periphery of the cylinder so as to press the medium-diameter hermetic annular elastic body A plunger holder formed of a cylindrical coil bobbin-shaped synthetic resin molding member (for example, polypropylene resin) in which a rubber-like V-packing is mounted, and the other end of the plunger cylinder so that the plunger holder cannot be removed. And a casing formed of a synthetic resin molded member (for example, polypropylene resin) to be bonded,
A cylinder formed of a synthetic resin molding member (for example, polypropylene resin) has a hollow cylinder end portion having a small-diameter opening and a wall portion contacting the other side surface of the plunger, and a large-diameter opening having a flange portion. A hollow cylinder having the other end of the hollow cylinder,
The plunger pump part inserts the plunger unit from the other end of the hollow cylinder of the cylinder and projects a large-diameter compression spiral ridge (for example, stainless steel wire) that constantly urges and urges the plunger unit. It is stored in
The check valve unit portion has a conical shuttle with a soft rubber O-ring, a medium-diameter compression spiral ridge D (for example, a stainless steel wire) that constantly urges the shuttle, and a small-diameter opening. An inner cylinder having one end portion and an other end portion having a medium diameter opening and a flange portion, and housing the shuttle and the intermediate diameter compression spiral strip D from the other end portion, and the intermediate diameter compression spiral strip D being pulled out A lid coupled to the other end so that it cannot be removed,
The valve seat body formed of a synthetic resin molded member (for example, polypropylene resin) is a magnetic member (for example, a stainless steel rod) in which a valve body formed of an elastic member (for example, silicon rubber) is fixed at both ends. A movable core guide tube hole A in which the formed cylindrical movable core A and a small-diameter compression spiral strip A (for example, stainless steel wire) that constantly urges and urges the movable core A are housed, and elastic at one end. A cylindrical movable iron core B formed of a magnetic member (for example, a stainless steel rod) to which a valve body formed of a member (for example, silicon rubber) is fixed, and a small-diameter compression for constantly elastically energizing the movable iron core B An annular cylindrical body having a movable core guide hole B in which a spiral strip B (for example, stainless steel wire) is housed, and an air inlet in the air trap and an external opening are provided at one end of the annular cylindrical body. Water level sensor connection port A valve seat A communicating with the air inlet in the air trap is provided on the bottom surface of the movable core guide hole A, and a valve seat B communicating with the external opening port on the bottom surface of the movable core guide hole B; An opening C communicating with the water level sensor connection port;
The communication body is formed of a magnetic member (for example, a stainless steel rod) and has a through-hole a, an annular cylindrical fixed core a having a valve seat a on one end side, and a magnetic member (for example, a stainless steel rod). An annular cylindrical fixed core b formed with a through hole b and having a valve seat b on one end side, the other end of the fixed core a and the other end of the fixed core b at one end of the yoke Is fixed and a U-shaped solenoid yoke formed of a magnetic member (for example, an iron plate) having a large-diameter opening at the substantially central portion of the other end of the yoke, a yoke one end of the U-shaped solenoid yoke, and the other end of the yoke, A copper wire (for example, enameled wire) wound around a cylindrical bobbin (for example, nylon resin) and connected to a terminal piece (for example, Faston terminal # 250) or a lead wire,
In the electromagnetic switching valve portion, the valve seat a of the communication main body is inserted into the movable core guide cylinder hole A of the valve seat main body, and the valve seat b of the communication main body is inserted into the movable iron core guide cylinder hole B of the valve seat main body. As described above, the annular cylindrical body of the valve seat body is inserted and attached to the large-diameter opening of the other end of the U-shaped solenoid yoke of the communication body,
The air multi-way switching valve device inserts the plunger unit into the cylinder, accommodates a large-diameter compression spiral ridge that is constantly elastically energized into the cylinder in the inner periphery of the hollow cylinder, and opens the other end of the hollow cylinder. One end side of the check valve unit part is inserted and pressed to close the part, and the yoke one end side of the U-shaped solenoid yoke of the communication body and the other end side of the check valve unit part And a washing machine mounting plate (for example, a U-shaped iron plate) is attached so as to sandwich the flange of the other end of the hollow cylinder of the cylinder and one end of the annular cylinder of the valve seat body. It is completed.

In terms of action (soft),
During the so-called demagnetization when the solenoid is not energized, the movable iron core A communicates with the air inlet in the air trap of the valve seat body by a small-diameter compression spiral ridge A that constantly urges and urges the movable iron core A. The movable iron core B is opened to the outside of the valve seat main body by a small-diameter compression spiral ridge B that constantly urges and urges the movable iron core B by blocking the passage of the compressed air B from the air trap of the washing machine. Block valve seat B communicating with the mouth,
When the washing tub presses the tank contact bar of the plunger unit due to the rolling vibration of the washing tub during the dehydration process of the washing machine, the medium diameter compression spiral ridge that constantly urges and urges the tank contact bar is compressed. However, when it is within the compressible range, the plunger does not slide in the cylinder, but when the medium-diameter compression spiral ridge is completely compressed, the operation of the plunger pump unit is started, and the plunger Sliding through the cylinder, the plunger holder of the plunger unit and the medium-diameter hermetic annular elastic body are in contact with each other, so that air existing in the cylinder does not escape from the plurality of communication holes provided in the plunger. The air that is present in the cylinder is compressed into the compressed air A while compressing the large-diameter compressed spiral ridge that constantly urges and urges the plunger unit, and the check valve unit portion is pressed by the compressed air A. The shuttle moves to the side of the communication body while compressing the medium-diameter compression spiral ridge D that constantly urges the shuttle, and the compressed air A passes through the through-hole a of the fixed core a of the communication body, Passes through the movable core guide tube hole A, passes through the opening C communicating with the water level sensor connection port of the valve seat body, is exhausted from the water level sensor connection port and transmitted to the water level sensor of the washing machine,
When the washing tub and the tub contact rod of the plunger unit are separated from each other by the rolling vibration of the washing tub during the dehydrating process of the washing machine, the operation of the plunger pump portion is maintained, and the tub contact rod is The plunger is returned by a medium-diameter compression spiral ridge that constantly urges and urges the plunger unit, and the plunger unit returns by sliding in the cylinder by a large-diameter compression vortex ridge that constantly urges and urges the plunger unit. The plunger holder and the medium-diameter hermetic annular elastic body are separated from each other, and external air is replenished into the cylinder from a plurality of communication holes provided in the plunger, so that the air pressure in the cylinder is reduced and the pressure is reduced. Accordingly, the check valve unit portion is restored by the medium-diameter compression vortex ridge D which constantly urges and urges the shuttle of the check valve unit portion, and the air of the compressed air A exhausted from the water level sensor connection port Force is maintained transmitted,
When the rolling vibration of the washing tub is repeated continuously or intermittently during the dehydration process of the washing machine, the operation start of the plunger pump unit and the operation holding of the plunger pump unit are alternately repeated, and the water level Compressed air A exhausted from the sensor connection port and transmitted to the water level sensor of the washing machine is gradually pressurized, and the dehydration process of the washing machine is stopped when a determination value set for the washing machine is exceeded Used for

When the solenoid is energized (for example, AC 100V is applied), the movable iron core A moves to a substantially central portion of the solenoid while compressing the small diameter spiral spiral A that constantly urges and urges the movable iron core A. The valve seat A communicating with the air inlet in the air trap of the valve seat main body is opened, and at the same time, the movable iron core A closes the valve seat a of the fixed iron core a of the communication main body and the air existing in the cylinder. The movable iron core B moves to a substantially central portion of the solenoid while compressing the small diameter compression spiral ridge B that constantly urges and urges the movable iron core B to move to the external opening of the valve seat body. When the valve seat B communicating with the cylinder is opened and the air existing in the cylinder becomes compressed air A and moves to the shuttle body side of the check valve unit portion, the fixed core b of the communication body passes through Passing through the hole b, inside the movable core guide hole B Street, through the valve seat B which communicates with the external opening port of the valve seat body, and exhausted to the outside from the external opening port,
The compressed air B from the air trap of the washing machine during the washing process of the washing machine passes through the valve seat A from the air introduction port in the air trap and passes through the opening C communicating with the water level sensor connection port of the valve seat body. The water level sensor connecting port is exhausted and transmitted to the water level sensor of the washing machine.

  Thus, in the washing process of the washing machine, the air present in the air trap provided in the outer peripheral portion of the washing tub is compressed by the amount of water supplied to the washing tub in the washing process of the washing machine by demagnetization or excitation of the solenoid. B is transmitted to the water level sensor of the washing machine, and in the dehydration process of the washing machine, the rolling vibration of the washing tub due to the bias of the laundry in the washing tub is converted into the compressed air A and the amount of rolling vibration is determined. Further pressurize, disable the compressed air B from the air trap and transmit the compressed air A to the water level sensor, switch between the two compressed air of the compressed air A and B, independently of each other compressed air (compressed air) Any one of A and compressed air B) can be transmitted to the water level sensor.

In the washing process of the washing machine, the compressed air B in which the air present in the air trap provided on the outer peripheral portion of the washing tub is compressed by the amount of water supplied to the washing tub is transmitted to the water level sensor. There is an effect that the amount of water supplied to the water is not erroneously recognized.
In the washing machine dehydration process, the rolling vibration of the washing tub caused by the bias of the laundry in the washing tub is converted into pressure (compressed air A), and further pressurized according to the amount of rolling vibration. Since the compressed air A is invalidated and the compressed air A is transmitted to the water level sensor, the analog signal of the water level (pressure) sensor is increased or the change amount of the analog signal is increased.

  In the washing process of the washing machine, the present invention transmits the compressed air B in which the air present in the air trap provided on the outer periphery of the washing tub is compressed by the amount of water supplied to the washing tub to the water level sensor, In the washing machine dehydration process, the rolling vibration of the washing tub caused by the bias of the laundry in the washing tub is converted into pressure (compressed air A), and further pressurized according to the amount of rolling vibration. Air with built-in vibration-pressure conversion function that can transmit the compressed air A to the water level sensor by disabling the compressed air B and switch the two compressed air A and B to the water level sensor of the washing machine independently. The object of providing a multi-way switching valve device was realized mainly by a combination of a plunger pump part and an electromagnetic switching valve part.

The configuration (structure) of the vibration-pressure conversion function built-in air multi-way switching valve device 10 of the present invention disposed in the upper part of the washing tub 91 of the washing machine 90 will be described.
FIG. 1 is a partial cross-sectional view of a washing machine 90 equipped with a vibration-pressure conversion function built-in air multi-way switching valve device 10 of the present invention. FIG. 1A is a partial cross-sectional view of the washing machine 90, and FIG. 1B is an enlarged view of the round part A in FIG. 1A, in which the pressure guiding tubes 93 and 95 are inserted. It is the figure which showed the vibration-pressure conversion function built-in type air multiway switching valve apparatus 10 of this invention.
FIG. 2 is a reduced external view of the vibration-pressure conversion function built-in air multi-way switching valve device 10 of the present invention. 2A is a reduced plan view of the vibration-pressure conversion function built-in air multi-way switching valve device 10 of the present invention, and FIG. 2B is a vibration-pressure conversion function built-in air multi-way switching of the present invention. 3 is a reduced front view of the valve device 10. FIG.
FIG. 3 is a front cross-sectional view of the vibration-pressure conversion function built-in air multi-way switching valve device 10 according to the present invention when the solenoid 79 is demagnetized and the tank contact bar 16 is not pressed against the washing tub 91 of the washing machine 90. .
FIG. 4 is a reference diagram in which an AA cutting line and a round part B are added to FIG.
FIG. 5 is a cross-sectional view taken along the line AA in FIG. 5A is a cross-sectional view taken along the line AA in FIG. 4, and FIG. 5B is an enlarged view of the round part B in FIG.

The vibration-pressure conversion function built-in air multi-way switching valve device 10 of the present invention includes a plunger pump section 40 including a plunger unit 15 and a cylinder 30, a check valve unit section 50, a movable iron core A70 and a movable iron core B75. And an electromagnetic switching valve portion 89 including a communication main body 80 having a solenoid 79.
As shown in FIG. 1, the washing machine 90 is horizontally disposed on the upper part of the washing tub 91 and operates.

  The plunger unit 15 includes a tank contact rod 16 formed of a synthetic resin molding member (for example, polypropylene resin), and a medium-diameter compression spiral ridge 17 (for example, stainless steel wire) that constantly urges and urges the tank contact rod 16. Then, the middle part of the cylinder is closed and the one end part 21 of the cylinder is opened, and the middle diameter compressed spiral ridge 17 and a part of the tank contact rod 16 are stored in the inner peripheral part of the cylinder from the one end part 21 of the cylinder. A middle-diameter hermetic annular elastic body 23 (for example, an O-ring) is mounted around the outer periphery of the cylinder so as to abut one side surface of the flange 22 and the flange is seen from the axial direction of the other end 24 of the cylinder. 22 is a cylindrical plunger 20 formed of a synthetic resin molding member (for example, polypropylene resin) having a plurality of communication holes 25 communicating in one side surface direction 22 (generic term for mechanical parts that reciprocate to compress and send fluid). Piston is a kind of that) and the plunger A plunger holder 26 formed of a cylindrical coil bobbin-shaped synthetic resin molded member (for example, polypropylene resin) in which a V packing 27 is mounted around the outer periphery of the cylinder so as to press the medium-diameter hermetic annular elastic body 23 of 0, And a housing 28 formed of a synthetic resin molding member (for example, polypropylene resin) coupled to the other end 24 of the cylinder 20 so that the plunger holder 26 cannot be removed.

  A cylinder 30 formed of a synthetic resin molding member (for example, polypropylene resin) has a hollow cylinder end portion 32 having a small-diameter opening and a wall surface portion 31 that contacts the other side surface of the flange portion 22 of the plunger 20, and a flange portion 33. And a hollow cylinder having a large-diameter open hollow cylinder.

  The plunger pump section 40 is inserted into the plunger unit 15 from the other end of the hollow cylinder (on the flange 33 side) of the cylinder 30 and protrudes to project a large diameter compression spiral ridge 41 (e.g. , Stainless steel wire) is housed in the inner periphery of a hollow cylinder.

  The check valve unit 50 has a conical shuttle 52 provided with an O-ring 51, a medium-diameter compression spiral ridge D53 (for example, stainless steel wire) that constantly urges the shuttle 52, and a small-diameter opening. An inner cylinder 57 having an end portion 54 and a second end portion 56 having a medium-diameter opening and a flange portion 55 for receiving the shuttle 52 and the medium-diameter compressed spiral ridge D53 from the other end portion 56; It comprises a cover 58 that is coupled to the other end 56 so that the compression spiral strip D53 cannot be removed (see FIGS. 3 and 4).

  A valve seat body 60 formed of a synthetic resin molded member (for example, polypropylene resin) has a valve body 71 formed of an elastic member (for example, silicon rubber) at one end and an elastic member (for example, silicon rubber) at the other end. ) Formed by a magnetic member (for example, a stainless steel rod) to which the valve body 72 is fixed, and a small-diameter compression spiral ridge A73 (always elastically energizing the movable core A70). For example, a movable iron core guide tube hole A61 in which a stainless steel wire is housed, and a magnetic member (for example, a stainless steel rod) to which a valve body 76 formed of an elastic member (for example, silicon rubber) is fixed at one end. A movable iron core guide hole B62 in which a cylindrical movable iron core B75 formed in the above and a small-diameter compression spiral ridge B78 (for example, stainless steel wire) that constantly urges and urges the movable iron core B75 are accommodated. The annular cylinder 74 is provided with an air inlet 63 in the air trap, an external opening 64, and a water level sensor connection port 65 on one end 69 side of the annular cylinder 74, and the bottom surface of the movable core guide hole A61. Has a valve seat A66 that communicates with the air introduction port 63 in the air trap, and a bottom surface of the movable core guide hole B62 communicates with a valve seat B67 that communicates with the external opening 64 and a water level sensor connection port 65. And an opening C68.

The communication main body 80 formed of a magnetic member (for example, an iron plate) is formed of a magnetic member (for example, a stainless steel rod), has a through hole a82, and has an annular cylindrical fixed iron core provided with a valve seat a83 on one end side. a81, an annular cylindrical fixed core b85 formed of a magnetic member (for example, a stainless steel rod) and having a through hole b85 and provided with a valve seat b86 on one end side; A U-shaped solenoid yoke 88 in which the other end portion and the other end portion of the fixed iron core b86 are fixed and a substantially central portion of the yoke other end portion 77 has a large diameter opening, and a yoke one end portion 87 of the U-shaped solenoid yoke 88. And a solenoid 79 attached between the other end 77 of the yoke.
The solenoid 79 is formed by winding a copper wire called a magnet wire (for example, enameled wire) around a cylindrical bobbin formed of a synthetic resin molded member (for example, nylon resin), a terminal piece (for example, Faston terminal # 250), Connected to lead wires (electric wires) (for example, soldering, fusing, spot welding, laser welding), electrical insulation (for example, adhesive sealing materials such as polyester resin, epoxy resin, silicone resin, urethane resin, etc.) In addition, waterproof materials, anti-moisture protection materials, anti-condensation materials, etc. are used.

  The electromagnetic switching valve portion 89 includes a valve seat a83 of the communication main body 80 in the movable iron core guide cylinder hole A61 of the valve seat main body 60 and a motor core guide cylinder hole B62 of the valve seat main body 60 of the communication main body 80. The annular cylindrical body 74 of the valve seat body 60 is inserted and attached to the large-diameter opening of the yoke other end 77 of the U-shaped solenoid yoke 88 of the communication body 80 so that the valve seat b86 is inserted. Is.

  The air multi-way switching valve device 10 with built-in vibration-pressure conversion function of the present invention inserts the plunger unit 15 into the cylinder 30 and hollows a large-diameter compression spiral ridge 41 that is always elastically energized into the cylinder 30. The one end 54 side of the check valve unit 50 is inserted and held so as to be housed in the inner periphery of the cylinder and close the opening of the other end (side of the flange 33) of the hollow cylinder. The yoke end portion 87 side of the U-shaped solenoid yoke 88 and the other end portion 56 side of the check valve unit portion 50 face each other, and the flange 33 and the valve seat at the other end of the hollow cylinder of the cylinder 30 The washing machine mounting plate 11 (for example, a U-shaped iron plate) is attached so as to sandwich the one end portion 69 of the annular columnar body 74 of the main body 60, and is completed.

The operation of the vibration-pressure conversion function built-in air multi-way switching valve device 10 of the present invention horizontally disposed above the washing tub 91 of the washing machine 90 will be described.
When the solenoid 79 is not energized, so-called demagnetization (see FIG. 3), the movable iron core A70 (the valve body 71) is moved to the valve seat by a small-diameter compression spiral ridge A73 that constantly urges and urges the movable iron core A70. The valve seat A66 that communicates with the air inlet 63 in the air trap of the main body 60 is closed to block the passage of the compressed air B from the air trap 92 of the washing machine 90.
The movable iron core B75 (the valve body 76) closes the valve seat B67 communicating with the external opening 64 of the valve seat body 60 by a small-diameter compression spiral ridge B78 that constantly urges and urges the movable iron core B75.

FIG. 6 is a front cross-sectional view of the vibration-pressure conversion function built-in air multi-way switching valve device 10 according to the present invention when the solenoid 79 is demagnetized and the tank contact bar 16 receives a small amount of rolling vibration of the washing tub 91 of the washing machine 90. FIG. A thick line with an up and down arrow indicates that the tank contact bar 16 reciprocates left and right when the washing tank 91 of the washing machine 90 is subjected to small vibrations (the vibration-pressure conversion function built-in air multi-way switching of the present invention). Since the valve device 10 is horizontally disposed above the washing tub 91 of the washing machine 90, the valve device 10 is reciprocating in the left-right direction.
When the washing tub 91 slightly pushes the tub contact rod 16 of the plunger unit 15 due to the rolling vibration of the washing tub 91 during the dehydration process of the washing machine 90, the tub contact rod 16 is constantly elastically energized. The radial compression spiral strip 17 is compressed, but when it is within the compressible range, the plunger 20 does not slide in the cylinder 30 and only the tank contact rod 16 reciprocates.

FIG. 7 is a front cross-sectional view of the vibration-pressure conversion function built-in air multi-way switching valve device 10 of the present invention when the solenoid 79 is demagnetized and the tank contact bar 16 is greatly subjected to the rolling vibration of the washing tub 91 of the washing machine 90. FIG. A long indicator line in the vicinity of the tank contact bar 16 with a thick line and an arrow indicates a state in which the tank contact bar 16 is moving due to a large vibration of the washing tank 91 of the washing machine 90. In addition, a long indicator line near the check valve unit portion 50 with a thick arrow indicates the pressure when the check valve unit portion 50 is compressed into compressed air A when the air 35 existing in the cylinder 30 is compressed. It shall indicate the state of being received and moving. A short indicator line with four thick lines and an arrow indicates a passage through which the compressed air A passes.
When the washing tub 91 pushes the tub contact rod 16 of the plunger unit 15 much by the rolling vibration of the washing tub 91 during the dehydration process of the washing machine 90, the operation of the plunger pump unit 40 is started.
When the medium diameter compressed spiral strip 17 is completely compressed, the plunger 20 slides in the cylinder 30 and the plunger holder 26 of the plunger unit 15 and the medium diameter hermetic annular elastic body 23 are brought into contact with each other. Thus, the air 35 existing in the cylinder 30 does not escape from the plurality of communication holes 25 provided in the plunger 20, and compresses the large-diameter compression spiral ridge 41 that constantly urges and urges the plunger unit 15. However, the air 35 existing in the cylinder 30 is compressed to become compressed air A, and the compressed air A is pressed, so that the shuttle 52 of the check valve unit portion 50 is always elastically energized to urge the shuttle 52. The shuttle 52 moves toward the communication main body 80 while compressing the air, and the compressed air A passes through the through hole a82 of the fixed iron core a81 of the communication main body 80, and the movable core guide hole A61. Through, through the opening C68 communicating with the water level sensor connecting port 65 of the valve seat body 60, it is transmitted to the water level sensor 95 of the exhaust washers 90 from the aqueous level sensor connecting port 65.

  When the washing tub 91 and the tub contact bar 16 of the plunger unit 15 are separated from each other by the rolling vibration of the washing tub 91 during the dehydration process of the washing machine 90, the operation of the plunger pump unit 40 is maintained, and the tub contact is maintained. The rod 16 is restored by a medium-diameter compression vortex ridge 17 that constantly elastically biases the tank contact rod 16, and the plunger 20 is urged by the large-diameter compression vortex ridge 41 that constantly elastically urges the plunger unit 15. The plunger holder 15 of the plunger unit 15 and the medium-diameter hermetic annular elastic body 23 are separated from each other, and the outside air enters from the gap 18 (see FIG. 5) and enters the plunger 20. The cylinder 30 is replenished from the plurality of communication holes 25 provided, and the air pressure in the cylinder 30 is reduced, and the check valve unit 50 is reduced by the pressure drop. Return by medium-diameter compression spiral power spring D53 which always resiliently urging the shuttle 52 of the isolation portion 50, the air pressure of the compressed air A is exhausted from the aqueous level sensor connecting port 65 is maintained transmitted.

  When the rolling vibration of the washing tub 91 during the dehydration process of the washing machine 90 is repeated continuously or intermittently, the operation start of the plunger pump unit 40 described in the paragraph number 0026 of the present specification, and the paragraph of the present specification The operation and maintenance of the plunger pump unit 40 described in the number 0027 are alternately repeated, and the compressed air A exhausted from the water level sensor connection port 65 and transmitted to the water level sensor 95 of the washing machine 90 is gradually pressurized. If the determination value set in the washing machine 90 is exceeded, the dehydration process of the washing machine 90 is used for a treatment that is stopped.

FIG. 8 is a front sectional view immediately after excitation of the solenoid 79 and when the tank contact bar 16 is not pressed against the washing tub 91 of the washing machine 90 in the vibration-pressure conversion function built-in air multi-way switching valve device 10 of the present invention. is there. A short indicator line with four thick lines and arrows indicates a passage through which the compressed air A returned from the water level sensor 95 passes.
FIG. 9 is a front cross-sectional view of the vibration-pressure conversion function built-in air multi-way switching valve device 10 according to the present invention when the solenoid 79 is excited and the tub contact bar 16 is not pressed against the washing tub 91 of the washing machine 90. . A short indicator line with four thick lines and arrows indicates a passage through which the compressed air B transmitted from the air trap 92 of the washing machine 90 passes.
When the solenoid 79 is energized (for example, AC 100V is applied), the movable iron core A70 (the valve body 71) compresses the small-diameter compression spiral ridge A73 that constantly urges and urges the movable iron core A70 while compressing the solenoid 79. A valve seat that moves to a substantially central portion (between the hollow disc 77 that is a solenoid yoke and the communication body 80 that is a solenoid yoke) and communicates with the air inlet 63 in the air trap of the valve seat body 60. A66 is opened. At the same time, the movable iron core A70 (the valve body 72) closes the valve seat a83 of the fixed iron core a81 of the communication body 80, so that the air 35 existing in the cylinder 30 is blocked from entering.
Here, as shown in FIG. 8, when pressurized air A is present in the water level sensor 95 of the washing machine 90, the inside of the opening C68 communicated from the water level sensor connection port 65 to the water level sensor connection port 65. , The valve seat A 66 communicating with the air trap air introduction port 63 passes through the air trap air introduction port 63, is exhausted to the air trap 92 side of the washing machine 90, and the compressed air A in the water level sensor 95 is exhausted. Will disappear and return.

FIG. 10 is a front cross-sectional view of the vibration-pressure conversion function built-in air multi-way switching valve device 10 of the present invention when the solenoid 79 is excited and when the tank contact bar 16 is greatly subjected to the rolling vibration of the washing tub 91 of the washing machine 90. FIG. A long indicator line in the vicinity of the tank contact bar 16 with a thick line and an arrow indicates a state in which the tank contact bar 16 is moving due to a large vibration of the washing tank 91 of the washing machine 90. In addition, a long indicator line near the check valve unit portion 50 with a thick arrow indicates the pressure when the check valve unit portion 50 is compressed into compressed air A when the air 35 existing in the cylinder 30 is compressed. It shall indicate the state of being received and moving. A short indicator line with four thick lines and an arrow indicates a passage through which the compressed air A passes.
When the solenoid 79 is energized (for example, AC 100 V is applied), the movable iron core B75 (the valve body 76) compresses the small-diameter compression vortex ridge B78 that constantly urges and urges the movable iron core B75. The valve seat B67 communicating with the external opening 64 of the valve seat body 60 is opened.
And, for some reason, when the washing tub 91 pushes the tub contact bar 16 of the plunger unit 15 much by the rolling vibration of the washing tub 91 of the washing machine 90, the operation of the plunger pump unit 40 is started.
When the medium diameter compressed spiral strip 17 is completely compressed, the plunger 20 slides in the cylinder 30 and the plunger holder 26 of the plunger unit 15 and the medium diameter hermetic annular elastic body 23 are brought into contact with each other. Thus, the air 35 existing in the cylinder 30 does not escape from the plurality of communication holes 25 provided in the plunger 20, and compresses the large-diameter compression spiral ridge 41 that constantly urges and urges the plunger unit 15. However, the air 35 existing in the cylinder 30 is compressed to become compressed air A, and the compressed air A is pressed, so that the shuttle 52 of the check valve unit portion 50 is always elastically energized to urge the shuttle 52. The shuttle 52 moves toward the communication main body 80 while compressing the compressed air A, and the compressed air A passes through the through hole b85 of the fixed iron core b84 of the communication main body 80 and moves to the movable core guide hole B62. The street, through the valve seat B67 communicating with external release port 64 of the valve seat body 60, is exhausted from the external opening port 64 to the outside.

  As shown in FIG. 9, during the washing process of the washing machine 90, the compressed air B from the air trap 92 of the washing machine 90 generated by supplying water to the washing tub 91 of the washing machine 90 is the valve seat body. The air inlet 63 of the air trap 60 passes through the valve seat A 66, passes through the opening C 68 communicating with the water level sensor connection port 65 of the valve seat body 60, and is exhausted from the water level sensor connection port 65 to be washed by the washing machine 90. Is transmitted to the water level sensor 95.

  In this way, in the washing process of the washing machine 90 by the demagnetization or excitation (for example, AC 100V application) of the solenoid 79, the air trap provided on the outer peripheral portion of the washing tub 91 depending on the amount of water supplied to the washing tub 91. The compressed air B in which the air present in 92 is compressed is transmitted to the water level sensor 95 of the washing machine 90, and in the dehydration process of the washing machine 90, the side of the washing tub 91 due to the bias of the laundry in the washing tub 91 or the like. The vibration vibration is converted into compressed air A and further pressurized in accordance with the amount of roll vibration, the compressed air B from the air trap 92 is invalidated, and the compressed air A is transmitted to the water level sensor 95. By switching between the two compressed airs, only one of the compressed air (either compressed air A or compressed air B) can be transmitted to the water level sensor 95 independently.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and it goes without saying that many modifications and the like can be made without departing from the spirit of the invention. It is.

For example, the outer portion of the movable iron core A70 may be formed of an elastic body such as rubber so that the valve body 71 and the valve body 72 are integrated, and a magnetic member of a stainless steel rod may be embedded inside.
Further, the V packing 27 in the plunger holder 26 provided on the outer peripheral portion of the plunger 20 may be an X ring, an O ring, or the like.

  It can be applied not only to washing machines but also to system baths equipped with water level (pressure) sensors and fully automatic dishwashers.

It is a fragmentary sectional view of a washing machine carrying the vibration-pressure conversion function built-in type air multi-way switching valve device of the present invention. 1 is a reduced external view of a vibration-pressure conversion function built-in air multi-way switching valve device according to the present invention. It is front sectional drawing at the time of solenoid demagnetization and when a tank contact rod is not pressed by the washing tub of a washing machine in the vibration-pressure conversion function built-in type air multiway switching valve device of the present invention. FIG. 4 is a reference diagram in which an AA cutting line and a round part B are added to FIG. 3. It is the figure which expanded the AA sectional drawing and the round part B in FIG. In the vibration-pressure conversion function built-in type air multi-way switching valve device of the present invention, it is a front cross-sectional view when the solenoid is demagnetized and the tank contact bar is subjected to small vibrations of the washing tub of the washing machine. In the vibration-pressure conversion function built-in type air multiway switching valve apparatus of this invention, it is front sectional drawing at the time of solenoid demagnetization, and when a tank contact rod receives the roll vibration of the washing tub of a washing machine largely. It is a front sectional view in the vibration-pressure conversion function built-in type air multi-way switching valve device of the present invention immediately after excitation of the solenoid and when the tank contact bar is not pressed against the washing tub of the washing machine. It is front sectional drawing at the time of solenoid excitation and when a tank contact rod is not pressed by the washing tub of a washing machine in the vibration-pressure conversion function built-in type air multiway switching valve apparatus of this invention. In the vibration-pressure conversion function built-in type air multiway switching valve device of the present invention, it is a front sectional view when the solenoid is energized and when the tank contact bar is greatly subjected to the roll vibration of the washing tub of the washing machine.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Vibration-pressure conversion function built-in air multiway switching valve apparatus of this invention, 11 ... Washing machine mounting plate, 12 ... Hole for mounting of washing machine mounting plate, 15 ... Plunger unit, 16 ... Tank contact rod, 17 ... Middle Diameter compression spiral ridge, 18 ... external air intake gap, 20 ... plunger, 21 ... cylinder one end, 22 ... trench, 23 ... medium-diameter hermetic annular elastic body, 24 ... cylinder other end, 25 ... communication hole, 26 ... Plunger holder, 27 ... V packing, 28 ... Housing, 30 ... Cylinder, 31 ... Wall surface part, 32 ... One end of hollow cylinder, 33 ... Gutter part, 35 ... Air existing in the cylinder, 40 ... Plunger pump part , 41 ... Large diameter compression spiral ridge, 50 ... Check valve unit part, 51 ... O-ring, 52 ... Shuttle, 53 ... Medium diameter compression vortex stripe D, 54 ... One end part, 55 ... Gutter part, 56 ... Other end part 57 ... Inner cylinder, 58 ... Lid, 60 ... Valve seat body, 6 ... movable iron core guide tube hole A, 62 ... movable iron core guide hole B, 63 ... air introduction port in air trap, 64 ... external opening, 65 ... water level sensor connection port, 66 ... valve seat A, 67 ... valve seat B, 68 ... Opening C, 69 ... One end of the circular cylindrical body 74, 70 ... Movable iron core A, 71 ... Valve element at one end of the movable iron core A, 72 ... Valve element at the other end of the movable iron core A, 73 ... Small diameter compression Spiral strip A, 74 ... annular cylindrical body, 75 ... movable iron core B, 76 ... valve body at one end of the movable core B, 77 ... other end of the yoke of solenoid yoke 88, 78 ... small diameter compression spiral strip B, 79 ... solenoid 80 ... Communication body, 81 ... Fixed iron core a, 82 ... Through hole a, 83 ... Valve seat a, 84 ... Fixed iron core b, 85 ... Through hole b, 86 ... Valve seat b, 87 ... One end of solenoid yoke 88 yoke Part, 88 ... solenoid yoke, 89 ... electromagnetic switching valve part, 90 ... washing Machine, 91 ... washing tub, 92 ... air trap, 93 ... Shirube圧 tube from the air trap 94 ... Shirube圧 tube to the water level sensor, 95 ... water level sensor

Claims (1)

Plunger pump part comprising a plunger unit and a cylinder, check valve unit part, electromagnetic switching valve part comprising a valve seat body incorporating a movable iron core A and a movable iron core B, and a communicating body having a solenoid, and a washing machine And a mounting plate, which is horizontally disposed on the upper part of the washing tub of the washing machine, and in response to the rolling vibration of the washing tub, the air existing in the cylinder is compressed to become compressed air A and the compressed air. A type of air with built-in vibration-pressure conversion function that can send and output A to the water level sensor of the washing machine, and send compressed air B from the air trap of the washing machine to the water level sensor by switching transmission and interruption A switching valve device,
The plunger unit includes a tank contact rod, a medium-diameter compression vortex ridge that constantly urges and urges the tank contact rod, a cylinder middle portion is closed, a cylinder one end is opened, and the medium-diameter compression vortex ridge is A part of the tank contact rod is housed in the inner periphery of the cylinder, and a collar is provided on the outer periphery of the cylinder. A cylinder plunger having a plurality of communication holes communicating from the axial direction of the other end of the cylinder to the one side surface of the flange, and a V packing on the outer circumference of the cylinder so as to press the medium-diameter hermetic annular elastic body of the plunger A cylindrical coil bobbin-shaped plunger holder that is wrapped around and a housing coupled to the other end of the plunger so that the plunger holder cannot be removed,
The cylinder is formed of a hollow cylinder having a hollow cylinder having a small-diameter opening and a wall surface part contacting the other side of the flange of the plunger, and a hollow cylinder other end having a flange and a large-diameter opening,
The plunger pump part is formed by inserting the plunger unit from the other end of the hollow cylinder of the cylinder and storing a large-diameter compressed spiral ridge that constantly protrudes and urges the plunger unit in the hollow cylinder inner periphery,
The check valve unit has a conical shuttle with an O-ring, a medium-diameter compression spiral ridge D that constantly urges the shuttle, and a small-diameter open end and a medium-diameter open collar. An inner cylinder that has the other end and accommodates the shuttle and the medium-diameter compression spiral ridge D from the other end, and is coupled to the other end so that the medium-diameter compression spiral ridge D cannot be removed. And a lid
The valve seat body includes a movable core guide cylinder hole A in which a cylindrical movable iron core A having a valve body fixed at both ends and a small-diameter compression spiral ridge A that constantly urges and urges the movable iron core A are accommodated. An annular cylindrical body having a cylindrical movable core B having a valve body fixed at one end and a movable core guide hole B in which a small-diameter compression spiral ridge B that constantly urges and urges the movable core B is accommodated. An air trap air inlet, an external opening, and a water level sensor connection port are provided at one end of the annular cylinder, and the bottom surface of the movable core guide hole A communicates with the air trap air inlet. And has a valve seat B communicating with the external opening and an opening C communicating with the water level sensor connection port on the bottom surface of the movable core guide hole B.
The communication main body has an annular cylindrical fixed core a having a through hole a and a valve seat a on one end side, and an annular cylindrical fixed body having a through hole b and a valve seat b on one end side. An iron core b, a U-shaped solenoid yoke in which the other end portion of the fixed iron core a and the other end portion of the fixed iron core b are fixed to one end of the yoke, and a substantially central portion of the other end of the yoke has a large diameter opening; A solenoid attached between one end of the U-shaped solenoid yoke and the other end of the yoke,
In the electromagnetic switching valve portion, the valve seat a of the communication main body is inserted into the movable core guide cylinder hole A of the valve seat main body, and the valve seat b of the communication main body is inserted into the movable iron core guide cylinder hole B of the valve seat main body. As described above, the annular cylindrical body of the valve seat body is inserted and attached to the large-diameter opening of the other end of the U-shaped solenoid yoke of the communication body,
The air multi-way switching valve device inserts the plunger unit into the cylinder, accommodates a large-diameter compression spiral ridge that is constantly elastically energized into the cylinder in the inner periphery of the hollow cylinder, and opens the other end of the hollow cylinder. One end side of the check valve unit part is inserted and pressed to close the part, and the yoke one end side of the U-shaped solenoid yoke of the communication body and the other end side of the check valve unit part The washing machine mounting plate is attached and completed so as to sandwich the flange of the other end of the hollow cylinder of the cylinder and the end of the annular cylinder of the valve seat body,
During the so-called demagnetization when the solenoid is not energized, the movable iron core A communicates with the air inlet in the air trap of the valve seat body by a small-diameter compression spiral ridge A that constantly urges and urges the movable iron core A. The movable iron core B is opened to the outside of the valve seat body by a small-diameter compression spiral ridge B that constantly urges and urges the movable iron core B by blocking the passage of the compressed air B from the air trap of the washing machine. Block valve seat B communicating with the mouth,
When the washing tub presses the tank contact bar of the plunger unit due to the rolling vibration of the washing tub during the dehydration process of the washing machine, the medium diameter compression spiral ridge that constantly urges and urges the tank contact bar is compressed. However, when it is within the compressible range, the plunger does not slide in the cylinder, but when the medium-diameter compression spiral ridge is completely compressed, the operation of the plunger pump unit is started, and the plunger Sliding through the cylinder, the plunger holder of the plunger unit and the medium-diameter hermetic annular elastic body are in contact with each other, so that air existing in the cylinder does not escape from the plurality of communication holes provided in the plunger. The air that is present in the cylinder is compressed into the compressed air A while compressing the large-diameter compressed spiral ridge that constantly urges and urges the plunger unit, and the check valve unit portion is pressed by the compressed air A. The shuttle moves to the side of the communication body while compressing the medium-diameter compression spiral ridge D that constantly urges the shuttle, and the compressed air A passes through the through hole a of the fixed core a of the communication body, Passes through the movable core guide tube hole A, passes through the opening C communicating with the water level sensor connection port of the valve seat body, is exhausted from the water level sensor connection port and transmitted to the water level sensor of the washing machine,
When the washing tub and the tank contact bar of the plunger unit are separated from each other by the rolling vibration of the washing tub during the dehydration process of the washing machine, the operation of the plunger pump unit is maintained, and the tank contact bar is the tank contact bar. The plunger is returned by a medium-diameter compression spiral ridge that constantly urges and urges the plunger unit, and the plunger unit returns by sliding in the cylinder by a large-diameter compression vortex ridge that constantly urges and urges the plunger unit. The plunger holder and the medium-diameter hermetic annular elastic body are separated from each other, and external air is replenished into the cylinder from a plurality of communication holes provided in the plunger, so that the air pressure in the cylinder is reduced and the pressure is reduced. Accordingly, the check valve unit portion is restored by the medium-diameter compression vortex ridge D which constantly urges and urges the shuttle of the check valve unit portion, and the air of the compressed air A exhausted from the water level sensor connection port Force is maintained transmitted,
When the oscillation vibration of the washing tub during the dehydration process of the washing machine is repeated continuously or intermittently, the operation start of the plunger pump unit and the operation holding of the plunger pump unit are alternately repeated, and the water level Compressed air A exhausted from the sensor connection port and transmitted to the water level sensor of the washing machine is gradually pressurized, and the dehydration process of the washing machine is stopped when a determination value set for the washing machine is exceeded Used for
During the so-called excitation of energization of the solenoid, the movable iron core A moves to the substantially central portion of the solenoid while compressing the small-diameter compression spiral ridge A that constantly urges and urges the movable iron core A to move the solenoid of the valve seat body. The valve seat A communicating with the air inlet in the air trap is opened, and at the same time, the movable iron core A closes the valve seat a of the fixed iron core a of the communication body to block the ingress of air existing in the cylinder, The movable iron core B moves to a substantially central portion of the solenoid while compressing the small diameter compression spiral ridge B that constantly urges and urges the movable iron core B, and communicates with the external opening of the valve seat body. When the air existing in the cylinder becomes compressed air A and moves to the shuttle main body side of the check valve unit portion, it passes through the through hole b of the fixed iron core b of the main body, Passing through the movable core guide hole B, the external opening of the valve seat body is opened. Through the valve seat B which communicates with the mouth, and exhausted to the outside from the external opening port,
The compressed air B from the air trap of the washing machine during the washing process of the washing machine passes through the valve seat A from the air introduction port in the air trap and passes through the opening C communicating with the water level sensor connection port of the valve seat body. , Exhausted from the water level sensor connection port is transmitted to the water level sensor of the washing machine,
In this way, in the washing process of the washing machine by demagnetization or excitation of the solenoid, the compressed air B in which the air present in the air trap of the washing machine is compressed by the amount of water supplied to the washing tub is used as the water level sensor of the washing machine. In the dehydration process of the washing machine, the rolling vibration of the washing tub due to the bias of the laundry in the washing tub is converted into compressed air A and further pressurized according to the amount of rolling vibration, and the air trap The compressed air B from the air is invalidated and the compressed air A is transmitted to the water level sensor, and the compressed air A and B can be switched between the two compressed air independently to transmit only one of the compressed air to the water level sensor. A pneumatic multi-way switching valve device with built-in vibration-pressure conversion function.

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