WO2022054746A1 - Électrovanne de commutation de débit - Google Patents

Électrovanne de commutation de débit Download PDF

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Publication number
WO2022054746A1
WO2022054746A1 PCT/JP2021/032602 JP2021032602W WO2022054746A1 WO 2022054746 A1 WO2022054746 A1 WO 2022054746A1 JP 2021032602 W JP2021032602 W JP 2021032602W WO 2022054746 A1 WO2022054746 A1 WO 2022054746A1
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WO
WIPO (PCT)
Prior art keywords
valve
solenoid valve
passage
flow path
pressure
Prior art date
Application number
PCT/JP2021/032602
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English (en)
Japanese (ja)
Inventor
史聖 兼子
正 菅野
裕 佐藤
昌弘 久田
Original Assignee
浜名湖電装株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 浜名湖電装株式会社 filed Critical 浜名湖電装株式会社
Priority to JP2022547576A priority Critical patent/JP7304497B2/ja
Publication of WO2022054746A1 publication Critical patent/WO2022054746A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/46—Cleaning windscreens, windows or optical devices using liquid; Windscreen washers
    • B60S1/48—Liquid supply therefor

Definitions

  • This disclosure relates to a solenoid valve that switches the flow path of a liquid or gas.
  • Patent Document 1 describes that a plurality of solenoid valves are arranged in a flow path switching box provided with one inflow port and a plurality of outflow ports to switch the flow path.
  • the flow path switching box has a structure in which a plurality of solenoid valves are arranged inside, the body size is inevitably larger than that of a plurality of solenoid valves, and the number of parts of the flow path switching box itself is also large. In addition, there is a risk of liquid leakage between the flow path switching box and the solenoid valve, and parts such as packing for maintaining the seal are also required.
  • the first of the present disclosure is a flow path switching solenoid valve composed of a plurality of solenoid valve units and a single valve body, and each of the plurality of solenoid valve units has the same shape.
  • Each of the plurality of electromagnetic valve units has an insulating bobbin, a coil wound around the bobbin and excited when energized, a magnetic core arranged in a magnetic circuit when the coil is energized, and a coil when the coil is energized.
  • this core and a plunger arranged to face each other via a magnetic gap are provided.
  • a single valve body has a single inflow passage, a chamber communicating with the inflow passage, an outflow passage formed in the same number as the number of solenoid valve units and communicating with the chamber, and a chamber and the outflow passage. It is equipped with a valve seat formed in the same number as the number of solenoid valve units between them, and a valve body that moves with each plunger to open and close each of the valve seats.
  • the inflow fluid flows in from a single inflow passage, so the fluid pressure in the chamber is the same. Therefore, the exciting force of the coil required to open and close the valve seat is also the same.
  • the exciting force of the coil can also be the same. Further, by adopting a solenoid valve unit having the same shape, it is possible to reduce the mold cost and the like, which leads to the reduction of the production cost.
  • each of the solenoid valve units has a positive terminal and a negative terminal for energizing the coil, and a plurality of solenoid valve units including the positive terminal and the negative terminal have the same shape.
  • the third of the present disclosure has a single connector for electrical connection to the positive and negative terminals of each solenoid valve unit.
  • the connector has a single connector negative terminal connected to each negative terminal, and the same number of connector positive terminals as the number of solenoid valve units individually connected to each positive terminal.
  • the inflow passage is connected to the fluid pump, and the outflow passage is connected to the injection nozzle provided with a stop valve that closes when the internal pressure is equal to or less than the first predetermined pressure.
  • the valve body is a normally closed valve that is pressed against the valve seat at a pressure higher than the first predetermined pressure when the coil is not excited. That is, in the fourth aspect of the present disclosure, the fluid in the outflow passage is confined between the stop valve and the valve seat.
  • the valve body with a pressure relief passage and a pressure relief valve for the fluid confined in the outflow passage. That is, the valve body is provided with a pressure relief valve between the outflow passage and the chamber, which communicates between the outflow passage and the chamber at a second predetermined pressure in which the pressure in the outflow passage is a constant pressure smaller than the first predetermined pressure. ..
  • the sixth of the present disclosure uses a plurality of pressure relief valves and arranges them in each of the outflow passages formed in the same number as the number of solenoid valve units. Even when the fluid pressures in the plurality of outflow passages are different, the pressure relief valve can respond finely.
  • the seventh of the present disclosure is provided with a communication portion in which each of the plurality of outflow passages communicates with each other, and a pressure relief passage is formed between the communication portion and the chamber.
  • Eighth of the present disclosure is a valve body formed by a resin upper body and a resin lower body welded to the upper body.
  • the inflow passage, the chamber, and the valve body are arranged in the upper body, and the outflow passage and the valve seat are arranged in the lower body.
  • the ninth and tenth of the present disclosure relate to the configuration of the valve body.
  • at least one of the valve bodies is a normally open valve that separates from the valve seat when the coil is not excited.
  • the tenth aspect of the present disclosure is a three-way valve that switches between the one-side outflow passage and the other-side outflow passage at least one of the valve bodies.
  • the present disclosure is not limited to the normally closed valve, and various solenoid valves can be used.
  • the pressure relief passage is formed inside the valve body in the bal body.
  • the pressure release valve is arranged in the pressure release passage in the valve body. Since a pressure relief passage is formed inside the valve body and the pressure relief valve that opens and closes this pressure relief passage is also arranged in the pressure relief passage inside the valve body, it is possible to promote the miniaturization of the solenoid valve. There is. That is, it is not necessary to specially form the pressure relief passage in the valve body, and the solenoid valve can be downsized as compared with the case where the pressure relief passage is specially formed in the valve body.
  • the valve body is provided with a valve body in which a pressure relief passage is formed inside and a valve body in which the outside is seated on a valve seat, and a tubular valve guide forming a pressure relief passage inside.
  • the pressure relief valve is slidably arranged inside the valve guide. Since the pressure relief valve is slidably guided inside the valve guide, the movement of the pressure relief valve is stable.
  • a pressure release valve seat in which the pressure release valve is seated is formed around the pressure release passage of the valve body.
  • the pressure release valve can open and close the pressure release passage by contacting and detaching from the pressure release valve seat.
  • the fourteenth of the present disclosure is provided with a pressure release spring that urges the pressure release valve to the pressure release valve seat.
  • a pressure release spring that urges the pressure release valve to the pressure release valve seat.
  • Fifteenth of the present disclosure further has a normally open compression spring that urges the valve body in a direction to separate from the valve seat when the coil is excited.
  • This normally open compression spring is arranged on the outer circumference of the valve guide. One end of the normally open compression spring is locked to the valve body, and the other end is locked to the valve guide.
  • valve body and the valve guide are coupled by engaging the locking claw portion formed on the valve body with the locking window portion formed on the valve guide.
  • the valve body and the valve guide can be connected by snap fit, and the valve body and the valve guide can be easily assembled.
  • FIG. 1 is a configuration diagram showing a system in which the flow path switching solenoid valve of the present disclosure is used.
  • FIG. 2 is a perspective view of the flow path switching solenoid valve.
  • FIG. 3 is a front view of the flow path switching solenoid valve of FIG.
  • FIG. 4 is a sectional view taken along line IV-IV of the flow path switching solenoid valve of FIG.
  • FIG. 5 is a VV cross-sectional view of the flow path switching solenoid valve of FIG.
  • FIG. 6 is a front view of another example of the flow path switching solenoid valve.
  • FIG. 7 is a sectional view taken along line VII-VII of the flow path switching solenoid valve of FIG. FIG.
  • FIG. 8 is a cross-sectional view taken along the line VIII-VIII of the flow path switching solenoid valve of FIG.
  • FIG. 9 is a perspective view showing a bobbin, a positive terminal and a negative terminal of a single solenoid valve unit.
  • FIG. 10 is a perspective view showing bobbins, positive terminals, and negative terminals of a plurality of solenoid valve units.
  • FIG. 11 is a perspective view showing bobbins and a single connector of a plurality of solenoid valve units.
  • FIG. 12 is a configuration diagram of a system using a flow path switching solenoid valve provided with a plurality of outflow passages and a single pressure relief valve.
  • FIG. 13 is a configuration diagram of a system in which air is used as a working fluid.
  • FIG. 14 is a perspective view of another example of the flow path switching solenoid valve.
  • FIG. 15 is a front view of the flow path switching solenoid valve of FIG.
  • FIG. 16 is a cross-sectional view taken along the line XVI-XVI of the flow path switching solenoid valve of FIG.
  • FIG. 17 is a cross-sectional view taken along the line XVII-XVII of the flow path switching solenoid valve of FIG.
  • FIG. 18 is a perspective view of another example of the flow path switching solenoid valve.
  • FIG. 19 is a cross-sectional view of another example of the flow path switching solenoid valve.
  • FIG. 20 is a partially enlarged view of the valve body and the valve guide portion of the solenoid valve of FIG.
  • FIG. 21 is a cross-sectional view showing another example of assembling the valve body and the valve guide.
  • FIG. 1 is a configuration diagram showing a system in which the flow path switching solenoid valve 100 of the present disclosure is used.
  • a washer fluid is used as the working fluid
  • 101 is a liquid tank for storing the washer fluid.
  • the washer fluid in the liquid tank 101 is sucked into the pump 103 via the pump pipe 102, and is supplied from the pump 103 to the flow path switching solenoid valve 100.
  • the pressure of the washer fluid supplied to the flow path switching solenoid valve 100 is about 300 kilopascals.
  • the washer fluid supplied and controlled by the flow path switching solenoid valve 100 is supplied to the injection nozzle 120 via the injection pipe 110, and is sprayed from the injection nozzle 120 onto a body to be cleaned such as a window glass or a camera.
  • the injection nozzle 120 includes four injection nozzles 121, a second injection nozzle 122, a third injection nozzle 123, and a third injection nozzle 124.
  • the injection pipe 110 includes four pipes: a first injection pipe 111, a second injection pipe 112, a third injection pipe 113, and a fourth injection pipe 114.
  • the injection nozzles 120 of such a set are arranged in front of and behind the vehicle, respectively.
  • the injection nozzle 120 is provided with a stop valve 130 for improving the injection of the washer fluid.
  • the stop valve 130 has a valve closing pressure of about 10 kilopascals, and closes the injection nozzle when the pressure of the washer fluid in the injection pipe 110 becomes equal to or less than the valve closing pressure.
  • the stop valve 130 is a valve that closes when the internal pressure is equal to or lower than the first predetermined pressure.
  • the flow path switching solenoid valve 100 of this example employs a normally closed valve, the washer fluid is confined in the injection pipe 110 when the stop valve 130 is closed.
  • the flow path switching solenoid valve 100 of this example includes the pressure relief valve 450, the washer fluid in the injection pipe 110 does not rise above the valve closing pressure.
  • the pressure release valve 450 will be described later.
  • the stop valve 130 includes four, a first stop valve 131, a second stop valve 132, a third stop valve 133, and a fourth stop valve 134.
  • the four stop valves 131, 132, 133, and 134 are provided in the first injection nozzle 121, the second injection nozzle 122, the third injection nozzle 123, and the third injection nozzle 124, respectively.
  • the configuration of the injection nozzle 120 including the stop valve 130 is the same for all four nozzles.
  • the flow path switching solenoid valve 100 includes a plurality of solenoid valve units 200.
  • the plurality of solenoid valve units 200 include a first solenoid valve unit 201, a second solenoid valve unit 202, a third solenoid valve unit 203, and a fourth solenoid valve unit 204.
  • the flow path switching solenoid valve 100 includes a single connector 300 and a single valve body 400.
  • the valve body 400 is formed by combining the upper body 401 and the lower body 402.
  • the connector 300 has a connector portion 301 and a connection portion 302.
  • the connector portion 301 is common to the plurality of solenoid valve units 200.
  • the connector portion 301 provides an electrical connection by being fitted and coupled with another electrical connection portion.
  • the connection unit 302 connects the connector positive terminal and the connector negative terminal 310 of the connector unit 301 to the positive terminal 321 and the negative terminal 320 of the plurality of solenoid valve units 200.
  • FIG. 9 shows a positive terminal 321 and a negative terminal 310 of one solenoid valve unit.
  • FIG. 10 shows a connector negative terminal 310 common to a plurality of solenoid valve units 200 and a plurality of connector positive terminals 311, 312, 313, 314.
  • the connector plus terminals are the first connector plus terminal 311, the second connector plus terminal 312, corresponding to the first solenoid valve unit 201, the second solenoid valve unit 202, the third solenoid valve unit 203, and the fourth solenoid valve unit 204.
  • the third connector plus terminal 313 and the fourth connector plus terminal 314 are included.
  • FIG. 10 shows a negative connection common to the plurality of solenoid valve units 200 and a plurality of independent positive connections for each of the plurality of solenoid valve units 200.
  • Both the connector portion 301 and the connection portion 302 are made of a resin material, and for example, PPS (polyphenylene sulfide resin) is used.
  • the upper body 401 has a single inflow passage 410 protruding from the center position thereof. Since the pump pipe 102 is attached to the inflow passage 410, an engaging portion 410a for preventing the pump pipe 102 from coming off is formed at the tip thereof.
  • the lower body 402 has a first outflow passage 411 and a second outflow passage 412 at positions corresponding to the first solenoid valve unit 201, the second solenoid valve unit 202, the third solenoid valve unit 203, and the fourth solenoid valve unit 204. , A third outflow passage 413, and a fourth outflow passage 414 are formed.
  • the first outflow passage 411, the second outflow passage 412, the third outflow passage 413, and the fourth outflow passage 414 have a first injection pipe 111, a second injection pipe 112, a third injection pipe 113, and a fourth injection, respectively.
  • the pipe 114 is attached so as to communicate fluidly.
  • An engagement portion similar to that of the inflow passage 410 is formed at the tip of each of the plurality of outflow passages 411, 421, 413, and 414.
  • Both the upper body 401 and the lower body 402 are also made of a resin material, and for example, PPS (polyphenylene sulfide resin) is used.
  • a single chamber 420 is formed in the upper body 401.
  • This single chamber 420 is a common chamber corresponding to the first solenoid valve unit 201, the second solenoid valve unit 202, the third solenoid valve unit 203, and the fourth solenoid valve unit 204.
  • the length of the upper body 401 in the left-right direction in FIG. 4 is about 60 to 70 mm, and the length in the vertical direction is about 20 to 30 mm.
  • the capacity of the chamber 420 is about 6000 cubic millimeters.
  • FIG. 5 is a cross section of the second solenoid valve unit 202.
  • the internal structure of the solenoid valve unit 200 is the same for all of the first solenoid valve unit 201, the second solenoid valve unit 202, the third solenoid valve unit 203, and the fourth solenoid valve unit 204.
  • Reference numeral 210 is a bobbin made of a resin material such as PPS, which has a substantially cylindrical shape, and a coil 211 made of an enamel-coated copper wire is wound many times around the bobbin. With the coil 211 wound, the outer surface thereof is covered with a resin such as PPS to form an outer shell 213.
  • a resin material such as PPS
  • a magnetic stainless steel core 214 and a magnetic stainless steel stator 215 are arranged on the inner circumference of the bobbin 210.
  • the yoke 216 is arranged on the outer circumference of the outer shell 213.
  • the yoke 216 is made of iron and the surface is galvanized to enhance the rust prevention effect.
  • a plunger 217 made of magnetic stainless steel is arranged on the inner circumference of the stator 215.
  • a magnetic gap 218 is formed between the upper end of the plunger 217 and the lower end of the core 214 in FIG.
  • the core has a bottomed cylindrical shape and holds a normal closed spring 219 inside.
  • the normally closed spring 219 is made of spring steel, is in contact with the upper end of the plunger 217, and presses the plunger 217 downward in FIG.
  • FIG. 5 shows a cross section of the second communication tube portion 422.
  • the above-mentioned chamber 420 is formed in the upper body 401.
  • the upper body 401 includes the first solenoid valve unit 201, the second solenoid valve unit 202, the third solenoid valve unit 203, and the first communication cylinder portion 421 and the second communication cylinder portion 422 corresponding to the fourth solenoid valve unit 204.
  • the third communication cylinder portion 423, and the fourth communication cylinder portion 424 are formed (FIG. 3 is shown).
  • a rod 220 integrally formed from the lower end of the plunger 217 is arranged, and a valve body 430 is arranged at the tip end (lower end) of the rod 220.
  • An upper sheet 431 and a lower sheet 432 made of a rubber material are arranged on both upper and lower surfaces of the valve body 430.
  • a cylindrical portion 440 is formed at a position corresponding to the first communication cylinder portion 421, the second communication cylinder portion 422, the third communication cylinder portion 423, and the fourth communication cylinder portion 424.
  • the tip (upper end) of the cylindrical portion 440 provides a valve seat 441.
  • the valve body 430 more specifically, the lower seat 432 abuts or detaches from the valve seat 441 to open and close the valve body 430.
  • the above-mentioned normal close spring 219 acts in the direction of pressing the lower seat 432 against the valve seat 441.
  • the first outflow passage 411, the second outflow passage 412, and the positions corresponding to the first communication cylinder portion 421, the second communication cylinder portion 422, the third communication cylinder portion 423, and the fourth communication cylinder portion 424 A third outflow passage 413 and a fourth outflow passage 414 are formed, respectively.
  • the cylindrical portion 440 and the valve seat 441 are formed in each of the first outflow passage 411, the second outflow passage 412, the third outflow passage 413, and the fourth outflow passage 414.
  • a pressure relief passage 460 that communicates the outflow passage 412 and the chamber 420 is formed in the cylindrical portion 440, and a pressure relief valve 450 that opens and closes the passage is arranged in the pressure relief passage 460.
  • the pressure release valve 450 is pressed against the pressure release valve seat 466 by the pressure release spring 465. Therefore, if the pressure of the washer fluid in the outflow passage 412 does not become higher than the set pressure of the pressure release spring 465, the pressure release passage 460 is closed.
  • the set pressure of the pressure relief spring 465 is about 5 kilopascals, which is about half of the set pressure of the stop valve 130.
  • FIG. 5 the pressure relief valve 450 and the pressure relief passage 460 corresponding to the second communication cylinder portion 422 have been described.
  • one pressure relief valve and one pressure relief passage are arranged corresponding to each of the plurality of communication cylinders.
  • a first pressure relief valve 451 and a first pressure relief passage 461 are arranged corresponding to the first communication cylinder portion 421.
  • a third pressure relief valve 453 and a third pressure relief passage 463 are arranged corresponding to the third communication cylinder portion 423.
  • a fourth pressure relief valve 454 and a fourth pressure relief passage 464 are arranged corresponding to the fourth communication cylinder portion 424.
  • the shapes of the chamber 420, the pressure relief passage 460, and the like can be changed in various ways. Other shapes of the flow path switching solenoid valve 100 will be described with reference to FIGS. 6 to 8.
  • the point that the chamber 420 is connected to all the solenoid valve units 200 is the same as the example shown in FIG. 3, but since FIG. 7 is a cross section of the inflow passage 410 portion, the length in the vertical direction is shorter than that of the example of FIG. It has become. Further, as shown in FIGS. 6 and 7, the volume of the chamber 420 is increased at the site where the first outflow passage 411, the second outflow passage 412, the third outflow passage 413, and the fourth outflow passage 414 are formed. A bulge is formed.
  • the pressure relief passage 460 is specially formed not in the cylindrical portion 440 but in the lower body 402.
  • the pressure release valve 450 opens and closes the pressure release valve seat 466, which is the open end of the pressure release passage 460.
  • the member that guides the pressure relief valve 450 does not appear in the cross section of FIG. 8, the pressure relief valve 450 moves in the vertical direction along the guide.
  • FIG. 9 shows a state in which the outer shell 213 is formed, and the negative terminal 320 and the positive terminal 321 are inserted into the bobbin 210.
  • the negative terminal 320 and the positive terminal 321 are provided with a negative connection portion 320a and a positive connection portion 321a, respectively.
  • the copper wire forming the coil 211 is electrically connected to the minus connection portion 320a and the plus connection portion 321a. Although the copper wire is not shown in FIG. 9, the copper wire is connected in the state where the outer shell 213 is formed.
  • FIG. 9 shows the bobbin unit 330.
  • the connector minus terminal 310 is welded to the tip portion 320b.
  • the first connector plus terminal 311 to the fourth connector plus terminal 314 are also welded to the tip portion 321b of the plus terminal 321 respectively.
  • the connector portion 301 is not shown in order to show the connector minus terminal 310 and the first to fourth connector plus terminals 311 to 314. However, in the state of performing this welding, the connector minus terminal 310 and the first to fourth connector plus terminals 311 to 314 are molded into the connector portion 301, and the positions are fixed.
  • one connector negative terminal 310 is commonly used for the negative terminals 320 of the four bobbin units 330.
  • the number of connector minus terminals 310 can be reduced to one-fourth as compared with the case where each bobbin unit 330 is provided with a connector.
  • connection portion is molded so as to cover the positive terminal 321 and the negative terminal 320, the connector negative terminal 310, and the first to fourth connector positive terminals 311 to 314.
  • the state after molding is shown in FIG. Following this state, the core 214 and the stator 215 are arranged on the inner peripheral side of the bobbin unit 330 via the sleeve 222. The outer diameters of the core 214 and the stator 215 are coupled to the inner diameter of the sleeve 222 on the entire circumference, respectively, so that the liquid is sealed.
  • the yoke 216 is arranged on the outer circumference of the outer shell 213.
  • all four solenoid valve units 200 have the same configuration including the minus terminal 320 and the plus terminal 321. Therefore, all the parts can be used in common, and the number of parts can be reduced as compared with the case where the solenoid valve units 200 having different physiques and shapes are adopted.
  • the assembly of the solenoid valve unit 200 and the valve body 400 includes two stages.
  • the O-ring 221 is interposed between the end surface 401a of the upper body 401 and the end surface of the stator 215.
  • the second stage in that state, the lower end of the yoke 216 in FIGS. 5 and 8 is caulked and fixed to the locking neck portion 401b of the upper body 401.
  • the assembly process of the valve body 400 includes a step of arranging the normal close spring 219 in the core 214 and a step of incorporating the valve body 430 (plunger 217 and rod 220) in the upper body 401.
  • the assembly process of the valve body 400 includes the step of assembling the upper body 401 so that the urging force of the normal close spring 219 is applied to the plunger 217.
  • the assembly step of the valve body 400 includes incorporating the pressure relief spring 465 and the pressure relief valve 450 into the pressure relief passage 460.
  • the assembly step of the valve body 400 includes a step of fixing the upper body 401 and the lower body 402.
  • the lower body 402 and the upper body 401 are brought into contact with each other so that the lower sheet 432 of the valve body 430 can be brought into contact with the valve seat 441 of the lower body 402, and the contact surface is welded.
  • the above assembly process is common to all of the first solenoid valve unit 201 to the fourth solenoid valve unit 204.
  • the operation of the flow path switching solenoid valve 100 having the above configuration will be described.
  • the window glass or the camera that supports the automatic driving of a car becomes dirty, cleaning is performed by signals from various sensors or instructions from the driver.
  • the pump 103 starts operation and discharges the washer fluid at a pressure of about 300 kilopascals. Since the flow path switching solenoid valve 100 of this example controls the supply of the washer fluid to the four injection nozzles 120, power is supplied to the solenoid valve unit 200 corresponding to the required injection nozzle 120 among the solenoid valve units 200. ..
  • the coil 211 of the second solenoid valve unit 202 is energized. More specifically, power is supplied to the second connector plus terminal 312 in the connector 300.
  • the pump 103 starts operation with the valve body 430 opened. Therefore, the pressure of the washer fluid discharged from the pump 103 does not hinder the valve opening of the valve body 430.
  • the washer fluid that has flowed in from the pump 103 through the pump pipe 102 and the inflow passage 410 first collects in the chamber 420, and then is supplied from the second outflow passage 412 to the second injection nozzle 122 via the second injection pipe 112. Will be done.
  • the washer fluid ejection from one injection nozzle 120 (second injection nozzle 122) has been described, but it is also possible to eject the washer fluid from a plurality of injection nozzles 120 at the same time, and it is also possible to eject the washer fluid from all the injection nozzles 120. It is also possible to spray the washer fluid. Since the flow path switching solenoid valve 100 of this example includes the chamber 420 whose capacity is significantly larger than the passage area of the first to fourth outflow passages 411 to 414, the pressure fluctuation due to the opening and closing of the valve body 430. Can be suppressed.
  • the exciting force applied to the plunger 217 is also the same for the first to fourth solenoid valve units 201 to 204.
  • the pressure of the washer fluid discharged from the pump 103 and stored in the chamber 420 is the same in the valve bodies 430 of the first to fourth solenoid valve units 201 to 204, so that the excitation force is the same. desirable.
  • the pump 103 is stopped and the power supply to the coil 211 is also stopped.
  • the magnetic force generated in the magnetic gap 218 disappears, and the valve body 430 closes the valve seat 441 by the pressing force of the normal close spring 219.
  • the washer fluid since the injection nozzle 120 includes the stop valve 130, the washer fluid is confined in the injection pipe 110 between the stop valve 130 and the valve seat 441. Therefore, the washer fluid may leak from the stop valve 130 due to the volume expansion due to the temperature rise of the washer fluid.
  • the flow path switching solenoid valve 100 of this example is provided with a pressure relief valve 450, and the set pressure of the pressure release spring 465 is set to about half of the set pressure of the stop valve 130. Therefore, the pressure relief valve 450 opens the pressure relief passage 460 before the stop valve 130.
  • the pump 103 is not operating in the state where the washer fluid is confined. In this state, both the inflow passage 410 and the chamber 420 have the same atmospheric pressure as the liquid tank 101. Therefore, the trapped washer fluid returns from the pressure relief passage 460 to the chamber 420 side.
  • the arrangement environment and length of the first to fourth injection pipes 111 to 114 may differ. As a result, the pressure change due to the volume fluctuation of the washer fluid confined in the first to fourth injection pipes 111 to 114 may be different from each other.
  • the first to fourth pressure relief passages 461 to 464 and the first to fourth pressure relief valves 451 correspond to the first to fourth injection pipes 111 to 114, respectively.
  • ⁇ 454 is provided. Therefore, the pressure release of the washer fluid can be finely performed according to the state of each of the first to fourth injection pipes 111 to 114.
  • the flow path switching solenoid valve 100 described above is a desirable example of the present disclosure, but has many other modified examples.
  • FIG. 12 is an example in which one common pressure relief valve 450a is used instead of the four pressure relief valves 450 of the first to fourth pressure relief valves 451 to 454.
  • a communication portion 460a communicating with the first to fourth outflow passages 411 to 414 is provided in the valve body 400, and a common pressure relief valve 450a is arranged between the communication portion 460a and the pressure relief passage 460. ing.
  • a single common pressure relief valve 450a can prevent the washer fluid from leaking from all stop valves 130. Therefore, the number of parts can be reduced, and the cost can be reduced, including the improvement of assembly productivity.
  • FIG. 13 is an example in which air is used instead of the washer fluid as the working fluid.
  • air is used instead of the washer fluid as the working fluid.
  • dust or the like adhering to the lens or the like is blown off by air.
  • the air pump 105 is used instead of the pump 103.
  • the discharge pressure of air from the air pump 105 is about 140 kilopascals.
  • the solenoid valve unit 200 and the valve body 400, including the upper sheet 431 and the lower sheet 432, can be used in common with the above-mentioned one for washer fluid.
  • the stop valve 130 and the pressure relief valve 450 are not adopted.
  • the washer fluid and air may be used in combination for cleaning the window glass, the camera, etc., and it is better to use the washer fluid in combination.
  • FIGS. 14 to 17 are examples in which the solenoid valve unit 200 adopts not only a normally closed valve but also a three-way valve and a normally open valve.
  • the first solenoid valve unit 201 is a three-way valve shown in FIG.
  • the second solenoid valve unit 202 and the third solenoid valve unit 203 are the normally closed valves shown in FIG.
  • the fourth solenoid valve unit 204 is a normally open valve shown in FIG.
  • the first outflow flow path 411 has two, one side (lower) passage 411a and the other side (upper) passage 411b.
  • the lower seat 432 closes the valve seat 441, the one-side passage 411a closes, and the other-side passage 411b opens under the urging force of the normal close spring 219.
  • the valve body 430 moves upward together with the plunger 217, and the upper seat 431 comes into contact with the upper valve seat 441a.
  • the one-side passage 411a opens and the other-side passage 411b closes.
  • the fourth outflow passage 414 is formed on the upper valve seat 441a side. Therefore, when the coil 211 is not energized, the valve body 430 moves to the lower valve seat 441 side under the urging force of the normal close spring 219, and the upper valve seat 441a is open. The upper valve seat 441a is closed when the coil 211 is energized and the plunger 217 is pulled upward by the excitation force. In this state, the upper seat 431 comes into contact with the upper valve seat 441a, and the fourth outflow passage 414 does not communicate with the chamber 420. In the case of a normally open valve, there is no risk of confinement of the working fluid, so the pressure relief valve 450 is unnecessary.
  • the first solenoid valve unit 201 is a three-way valve
  • the second solenoid valve unit 202 and the third solenoid valve unit 203 are normally closed valves
  • the fourth solenoid valve unit 204 is a normally open valve. did. Instead of this, which valve is to be adopted for which solenoid valve unit 200 can be appropriately selected. All solenoid valve units are three-way valves very good. All solenoid valve units may be normally open valves.
  • the four solenoid valve units 200 are arranged in a row, but the arrangement positions can also be appropriately selected.
  • FIG. 18 is an example of arranging in a square shape. Even if it is arranged in this way, the connector negative terminal 310 can be commonly used for the negative terminal 320 of each solenoid valve unit 200.
  • solenoid valve units 200 may be a plurality, and may be appropriately selected in relation to the object to be cleaned.
  • valve body 430 was connected to the rod 220, but the valve body 430 only needs to be able to move integrally with the rod 220 and does not necessarily have to be fixed.
  • the valve body 430 may be pressed against the rod 220 by using a load spring or the like.
  • FIG. 19 shows another example of formation of the pressure relief passage 460.
  • the pressure relief passage 460 was formed in the valve body 400.
  • the pressure relief passage 460 is similarly arranged in the valve body 400, but is formed in the valve body 430 arranged in the valve body 400.
  • the valve body 430 includes a cylindrical valve body 4301 that forms a pressure relief passage 460 inside, and a circular tubular valve guide 4302 that also forms a pressure relief passage 460 inside. ..
  • the valve body 4301 is integrally molded with the same water resistant rubber as the O-ring, and the surface is coated.
  • the coating material is a substance such as fluorine or molybdenum that prevents the surface of rubber from melting and improves the seating property of the valve body and the mating valve seat.
  • the valve guide 4302 is made of the same resin material as the valve body 400.
  • valve body 4301 is inserted at the lower end of the valve guide 4302.
  • the valve body 4301 is press-fitted into the valve guide 4302 and fixed.
  • the valve body 4301 and the valve guide 4302 may be fixed by using an adhesive.
  • a pressure relief valve 450 is arranged in the pressure relief passage 460 of the valve guide 4302.
  • the pressure relief valve 450 is made of resin and has a cylindrical shape, and its outer diameter is slightly smaller than the inner diameter of the pressure relief passage 460 formed in the valve guide 4302. Therefore, the pressure relief valve 450 is guided by the valve guide 4302 and slides in the pressure relief passage 460.
  • a plurality of pressure relief grooves 450b are formed on the outer periphery of the pressure relief valve 450 to facilitate the flow of the working fluid in the pressure relief passage 460 of the valve guide 4302. If the pressure relief grooves 450b are formed at a plurality of locations, a symmetrical shape can be achieved around the axis. However, if the cross-sectional area of the flow path is secured, the number of pressure relief grooves 450b may be one.
  • a disk-shaped lid 4303 is formed on the upper part of the valve guide 4302.
  • the lid portion 4303 is formed with a plunger receiving portion 4307 to which the plunger 217 abuts. Further, the lid portion 4303 is formed with a pressure relief hole 4304 that communicates the pressure relief passage 460 inside the valve guide 4302 with the chamber 420.
  • the upper surface of the valve body 4301 is a pressure relief valve seat 466 to which the pressure relief valve 450 abuts.
  • the pressure release valve 450 has a sealing surface 4501 projecting in an annular shape in order to improve the sealing property with the pressure release valve seat 466.
  • a normally open compression spring 231 is arranged on the outer periphery of the valve guide 4302.
  • the lower end of the normally open compression spring 231 engages in the valve body 400 at the chamber 420, and the upper end engages around the lid 4303 of the valve guide 4302.
  • the compressive force of the normally open compression spring 231 is set to be smaller than the compressive force of the normally closed spring 219.
  • a pressure release spring 465 for urging the pressure release valve 450 to the pressure release valve seat 466 side is arranged.
  • the upper end of the pressure release spring 465 is locked by the lid portion 4303, and the lower end of the pressure release spring 465 is locked to the pressure release valve 450.
  • the pressure release valve 450 is formed with a recess 4502 for holding the pressure release spring 465.
  • the set pressure (release pressure) of the pressure release spring 465 is about 5 kilopascals, which is about half of the set pressure (release pressure) of the stop valve 130.
  • valve body 400 To assemble the valve body 400 in the examples of FIGS. 19 and 20, first assemble the valve body 430. In the assembly of the valve body 430, the pressure release spring 465 and the pressure release valve 450 are arranged in the pressure release passage 460 of the valve guide 4302. At that time, one end of the pressure release spring 465 is locked to the lid portion 4303 of the valve guide 4302, and the other end of the pressure release spring 465 is locked to the recess 4502 of the pressure release valve 450. In that state, the valve body 4301 is inserted into the valve guide 4302. Upon insertion, the annular sealing surface 4501 of the pressure relief valve 450 is seated on the pressure relief valve seat 466 of the valve body 4301.
  • valve body 4301 and the valve guide 4302 are fixed by press fitting or adhesive.
  • the valve body 430 and the normally open compression spring 231 assembled in the above steps are arranged in the chamber 420. In the arranged state, the upper end of the normally open compression spring 231 is locked by the lid portion 4303 of the valve guide 4302, and the lower end is locked to the valve body 400.
  • the assembly of the solenoid valve unit 200 and the valve body 400 is the same as in the above example.
  • the O-ring 221 is placed on the upper surface 400a of the valve body 400.
  • the lower end of the plunger 217 is brought into contact with the plunger receiving portion 4307 formed on the lid portion 4303 of the valve guide 4302.
  • the lower end of the yoke 216 is crimped toward the locking shoulder portion 400b of the valve body 400. Caulking is performed on the entire circumference of the yoke 216 except for the portion where the connector 300 is located.
  • the behavior when spraying the washer fluid to the camera is basically the same as the above example.
  • the coil 211 By energizing the flow path switching solenoid valve 100, the coil 211 is excited, and a magnetic circuit is formed in the yoke 216, the plunger 217, and the stator core 2141. Since the magnetic throttle portion 2142 is formed in the stator core 2141, the magnetic flux passes through the magnetic gap 218. As a result, a magnetic attraction force acts on the plunger 217, and the plunger 217 moves to the stator core 2141 side against the compressive force of the normal closed spring 219. The movement of the plunger 217 reduces the magnetic gap 218.
  • valve body 430 With the movement of the plunger 217, the valve body 430 is pushed up by the normally open compression spring 231 to open the valve seat 441.
  • the above operation of the flow path switching solenoid valve 100 is performed before the start of operation of the pump 103. Therefore, the high-pressure washer fluid pressure from the pump 103 is not applied to the valve body 430, and the movement of the valve body 430 is not hindered.
  • the operation of the pump 103 is started.
  • the high-pressure washer fluid from the pump 103 flows into the inflow passage 410, and then flows out from the second outflow passage 412 through the chamber 420 and the valve seat 441.
  • the outflowing washer fluid is injected from the second injection pipe 112 into the camera from the injection nozzle 120 via the stop valve 130.
  • the operation of the pump 103 is stopped, and when the pressure of the second injection pipe 112 drops below the release pressure of the stop valve 130, the second stop valve 132 is also closed. At the same time, the energization of the flow path switching solenoid valve 100 is also completed. By closing the stop valve 130, it is possible to improve the liquid drainage at the end of injection. In addition, the washer fluid can be stored in the second injection pipe 112, and the responsiveness at the next operation can be improved.
  • valve body 430 Since the urging force of the normal close spring 219 is larger than the urging force of the normal open compression spring 231, the valve body 430 is pressed against the valve seat 441. As described above, since the valve seat 441 has a tapered shape corresponding to the arc shape of the valve body 430 (valve body 4301), it can be reliably sealed. In particular, in this example, the valve body 430 (valve body 4301 and valve guide 4302) is guided by the normally open compression spring 231 in the chamber 420, so that the valve body 430 moves smoothly.
  • the flow path switching solenoid valve 100 shown in FIGS. 19 and 20 is similar to the above-mentioned examples of FIGS. 5, 8 and 16 in that a pressure relief passage 460 is provided in the valve body 400.
  • the pressure release passage 460 is formed inside the valve body 430 (valve body 4301 and valve guide 4302) in the valve body 400.
  • the overall structure can be miniaturized.
  • the pressure relief passage 460 is formed in a portion other than the valve body 430 in the valve body 400 as in the examples of FIGS. 5, 8 and 16 described above, the pressure relief passage 460 is provided in the valve body 400. Space is required. Further, the shape of the valve body 400 becomes complicated by forming the pressure relief passage 460.
  • the valve body 430 is provided with a pressure relief passage 460.
  • the pressure relief passage 460 is installed inside the valve body 430.
  • the valve body 430 is arranged in the chamber 420, and the chamber 420 is on the inflow passage 410 side of the valve seat 441. That is, the pressure environment in which the valve body 430 is arranged is the same as the pressure in the inflow passage 410. Therefore, if the pressure relief passage 460 is opened by the pressure relief valve 450, the pressure of the first outflow passage to the fourth outflow passage 411 to 414 can be reduced to the pressure in the inflow passage.
  • the first outflow passage to the fourth outflow passage 411 to 414 communicate with the pressure relief passage 460 of the valve guide 4302 via the pressure relief passage 460 of the valve main body 4301. Therefore, it is not necessary to provide a special branch point connecting the first outflow passage to the fourth outflow passage 411 to 414 and the pressure relief passage 460. As a result, the positions of the first outflow passage to the fourth outflow passage 411 to 414 can be freely set.
  • the first outflow passage to the fourth outflow passage 411 to 414 are arranged at positions facing the inflow passage 410 at 180 degrees.
  • the first outflow passage to the fourth outflow passage 411 to 414 can be arranged in the same direction as the inflow passage 410.
  • the normally closed outflow passage 228 is arranged horizontally, but the first outflow passage to the fourth outflow passage 411 to 414 can be arranged in the vertical direction.
  • valve body 400 it is not essential to configure the valve body 400 as a single unit in the example of FIG. It may be divided into an upper body 401 and a lower body 402. In that case, the two members are fixed by using a fixing method such as welding, bolt fixing, or clip fixing. Further, the valve body 400 may be composed of three or more members.
  • the first outflow passage to the fourth outflow passage 411 to 414 can freely set the vertical angle and / or the circumferential angle.
  • the solenoid valve unit 200 and the valve body 400 are separately molded, assembled, and then connected. Therefore, the fact that there are no restrictions on the layout of the first outflow passage to the fourth outflow passage 411 to 414 increases the degree of freedom in handling the solenoid valve unit 200 and the piping.
  • valve body 430 is divided into a valve body 4301 and a valve guide 4302, and the pressure relief valve 450 is arranged in the internal pressure relief passage 460. Therefore, the pressure release valve 450 and the pressure release spring 465 can be easily arranged.
  • the upper end of the valve body 4301 can be used as a pressure relief valve seat 466.
  • the magnetic circuit of the solenoid valve unit 200 is also different from that of FIG.
  • the core 214 and the stator 215 are used as separate members, and when the coil of the second solenoid valve unit 202 is excited, an attractive force due to a magnetic force is generated in the magnetic gap 218 between the plunger 217 and the core 214. ..
  • the magnetic throttle portion 2142 is formed on the stator core 2141 as the stator core 2141 in which the core and the stator are integrated.
  • an attractive force is generated in the magnetic gap 218.
  • this suction force overcomes the pressing force of the normal close spring 219 and pulls up the plunger 217 upward.
  • the sleeve 222 is provided, but in the example of FIG. 19, the sleeve 222 is abolished.
  • a similar magnetic circuit can be configured even if the sleeve 222 is abolished.
  • the movement of the plunger 217 was transmitted to the valve body 430 via the rod 220, and the valve body 430 was separated from the valve seat 441.
  • the rod 220 is not provided.
  • the lower surface of the plunger 217 is in direct contact with the valve body 430 (the plunger receiving portion 4307 formed on the lid portion 4303 of the valve guide 4302).
  • the force for pulling the valve body 430 upward utilizes the urging force of the normally open compression spring 231.
  • valve body 4301 and the valve guide 4302 are press-fitted and fixed or adhesively fixed. Instead of this, as shown in FIG. 21, it may be fixed by a snap fit.
  • a plurality of locking window portions 4305 are formed in the cylindrical portion of the valve guide 4302.
  • the valve main body 4301 is also formed with a locking claw portion 4306 at a position corresponding to the locking window portion 4305.
  • valve seat 441 (normally closed valve seat) has a tapered shape, and the valve body 4301 has an arc shape, but this shape is not necessarily limited to the illustrated shape.
  • the valve seat 441 may have an arc shape, or the valve body 4301 may have a planar shape.
  • the recess 4502 is formed in the pressure relief valve 450 to hold the pressure release spring 465, but the shape of the holding is not limited to the recess 4502.
  • a convex portion may be formed on the pressure release valve 450 so that the convex portion is arranged in the pressure release spring 465.
  • the flow path switching solenoid valve 100 of the present disclosure can be used not only as a switching fluid for cleaning an object to be cleaned such as a camera, but also as a solenoid valve for switching a wide range of fluid flow paths.
  • the injection nozzle 120 may not be used, and even if the injection nozzle 120 is used, the shape of the injection nozzle 120 can be different for each solenoid valve unit 200.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

Électrovanne de commutation de débit (100) comprenant une pluralité d'unités d'électrovanne (200) présentant la même forme, et un corps de vanne unique (400). Le corps de vanne unique (400) comprend un passage de débit entrant (410) unique, une chambre (420) qui communique avec le passage de débit entrant (410), et une pluralité de passages de débit sortant (411, 412, 413, 414) communiquant avec la chambre (420). Le nombre de la pluralité de passages de débit sortant (411, 412, 413, 414) formés est identique au nombre d'unités d'électrovanne (200). Le corps de vanne unique (400) comprend une pluralité de sièges de vanne (441) formés entre la chambre (420) et le passage de débit sortant, et une pluralité de corps de vanne (430) qui ouvrent et ferment des sièges de vanne (441) respectifs. Une pression de fluide commune à l'intérieur de la chambre (420) agit sur la pluralité de corps de vanne (430). La pluralité de corps de vanne (430) peuvent être ouverts et fermés par une force d'excitation commune. La pluralité d'unités d'électrovanne (200) présentent la même force d'excitation.
PCT/JP2021/032602 2020-09-14 2021-09-06 Électrovanne de commutation de débit WO2022054746A1 (fr)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114458609A (zh) * 2022-04-14 2022-05-10 宁波均胜群英汽车系统股份有限公司 一种车载多向洗涤泵
WO2024067127A1 (fr) * 2022-09-29 2024-04-04 比亚迪股份有限公司 Module intégré, système de gestion thermique et véhicule

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56148171U (fr) * 1980-04-07 1981-11-07
JP2012077785A (ja) * 2010-09-30 2012-04-19 Hitachi Appliances Inc 多連式給水電磁弁
JP2020094624A (ja) * 2018-12-12 2020-06-18 株式会社小糸製作所 流路切替ボックスおよび車両用クリーナシステム

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56148171U (fr) * 1980-04-07 1981-11-07
JP2012077785A (ja) * 2010-09-30 2012-04-19 Hitachi Appliances Inc 多連式給水電磁弁
JP2020094624A (ja) * 2018-12-12 2020-06-18 株式会社小糸製作所 流路切替ボックスおよび車両用クリーナシステム

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114458609A (zh) * 2022-04-14 2022-05-10 宁波均胜群英汽车系统股份有限公司 一种车载多向洗涤泵
CN114458609B (zh) * 2022-04-14 2022-06-24 宁波均胜群英汽车系统股份有限公司 一种车载多向洗涤泵
WO2024067127A1 (fr) * 2022-09-29 2024-04-04 比亚迪股份有限公司 Module intégré, système de gestion thermique et véhicule

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