WO2018150484A1 - Électrovanne - Google Patents

Électrovanne Download PDF

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Publication number
WO2018150484A1
WO2018150484A1 PCT/JP2017/005474 JP2017005474W WO2018150484A1 WO 2018150484 A1 WO2018150484 A1 WO 2018150484A1 JP 2017005474 W JP2017005474 W JP 2017005474W WO 2018150484 A1 WO2018150484 A1 WO 2018150484A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve body
valve
plunger
annular groove
arcuate
Prior art date
Application number
PCT/JP2017/005474
Other languages
English (en)
Japanese (ja)
Inventor
義典 伊藤
弘文 土井
Original Assignee
三菱電機株式会社
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.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2017/005474 priority Critical patent/WO2018150484A1/fr
Priority to JP2019500083A priority patent/JP6727392B2/ja
Publication of WO2018150484A1 publication Critical patent/WO2018150484A1/fr

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Classifications

    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • 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

Definitions

  • This invention relates to a solenoid valve such as used for an electric control air bypass valve.
  • the valve body is held by an annular recess formed in the valve shaft.
  • a structure in which a valve body is held using an annular groove formed around the axis of a plunger is conventionally known.
  • the plunger is fixed to the valve body without swinging.
  • a spring that presses the valve body against the side surface of the annular groove formed around the axis of the plunger may be additionally provided.
  • the spring as described above is a member provided only for fixing the plunger to the valve body.
  • the plunger is fixed to the valve body, it is necessary to bother to provide a member only for the fixing.
  • the present invention has been made to solve the above-described problems, and an electromagnetic valve capable of fixing a plunger to a valve body without providing a member only for fixing the plunger to the valve body is provided.
  • the purpose is to obtain.
  • the electromagnetic valve according to the present invention includes a plunger that moves along an axial direction in response to a magnetic attraction force toward the core side and an urging force in a direction opposite to the magnetic attraction force, and a first valve disposed on the core side.
  • a first valve body and a valve body having a first valve body and a second valve body sandwiched in layers in an annular groove formed around the axis of the plunger.
  • At least one of the body and the second valve body has an arcuate portion that warps in a direction away from the other valve body and is sandwiched between the annular grooves and pressed against the side surface of the annular groove by elastic deformation. It is what.
  • At least one of the first valve body and the second valve body is warped in the direction away from the other valve body, and is pressed against the side surface of the annular groove by elastic deformation sandwiched between the annular grooves. Since the arcuate portion is attached, the plunger can be fixed to the valve body without providing a member only for fixing the plunger to the valve body.
  • FIG. 1 is a cross-sectional view showing the open state of the electromagnetic valve according to Embodiment 1 of the present invention
  • FIG. 3B is a cross-sectional view showing the closed state of the electromagnetic valve according to Embodiment 1 of the present invention. is there.
  • FIG. 7A is a cross-sectional view of the valve body of the solenoid valve as a reference example
  • FIG. 7B is a cross-sectional view of the valve body of the solenoid valve according to Embodiment 1 of the present invention.
  • FIG. 1 shows a cross-sectional view of a solenoid valve 1 according to Embodiment 1 of the present invention.
  • a coil ASSY 3 is held inside a substantially cylindrical case 2.
  • the coil ASSY 3 includes a bobbin 31, a coil 32, a terminal 33, and an exterior resin 34, and the coil 32 is wound around the bobbin 31.
  • the coil 32 is electrically connected to the terminal 33.
  • the exterior resin 34 integrally holds the bobbin 31, the coil 32, and the terminal 33.
  • a core 4 excited by energization of the coil 32 is inserted above the coil ASSY 3 in the drawing.
  • An O-ring 5 a is sandwiched between the coil ASSY 3 and the core 4.
  • a plate 6 that constitutes a magnetic circuit together with the core 4 is inserted below the coil ASSY 3 in the drawing.
  • An O-ring 5 b is sandwiched between the coil ASSY 3 and the plate 6.
  • a substantially cylindrical pipe 8 fixed to the plate 6 is provided between the plunger 71 and the plate 6.
  • the pipe 8 is provided in order to suppress the plunger 71 from being attracted to the plate 6 side when the coil 32 is energized, and is made of a nonmagnetic material.
  • a washer 72 is fixed to a lower end portion on the paper surface, and an annular groove 9 is formed around the axis of the plunger 71.
  • the valve element 73 is sandwiched in the annular groove 9.
  • the plunger 71, the washer 72, and the valve body 73 constitute a valve assembly 7, which are fixed to each other and move integrally.
  • One end of the spring 10 is fixed to the valve body 73.
  • the other end of the spring 10 is fixed to the pipe 8.
  • the spring 10 biases the plunger 71 and the valve body 73 downward in the drawing.
  • the valve body 73 partitions the external space S1 of the electromagnetic valve 1 and the internal space S2 of the electromagnetic valve 1.
  • a holder 11 is sandwiched between the case 2 and the plate 6.
  • a seal ring 12 is provided around the valve body 73, and the seal ring 12 is in annular contact with the outer peripheral surface of the valve body 73.
  • a bracket 13 for attaching the solenoid valve 1 to other parts is fixed to the case 2.
  • the O-ring 14 ensures airtightness between the two when the solenoid valve 1 is attached to the other components.
  • the bracket 13 is fixed to the case 2 by welding or the like.
  • each member is attached to the inside of the case 2 in the order of the seal ring 12, the holder 11, the plate 6, the O ring 5 b, the coil ASSY 3, the O ring 5 a, and the core 4.
  • the upper part in the paper surface of case 2 is caulked.
  • the coil ASSY 3 is manufactured by winding the coil 32 around the bobbin 31, connecting the coil 32 and the terminal 33 by fusing, and further covering with the exterior resin 34.
  • the exterior resin 34 has a connector shape for connecting to a power source.
  • each member is further attached in the order of the pipe 8, the spring 10, and the valve ASSY7.
  • the valve assembly 7 includes the valve body 73 and the washer 72 in this order.
  • the tip of the plunger 71 is subjected to processing such as high spin caulking, and the washer 72 and the valve are deformed by the deformed tip. Prevent body 73 from falling off.
  • the plunger 71 has an annular groove 9.
  • the O-ring 14 is attached to the case 2 and the assembly of the electromagnetic valve 1 is completed.
  • the solenoid valve 1 is used, for example, as an electrically controlled air bypass valve for an in-vehicle turbocharger.
  • FIGS. 2A and 2B An example of this use is shown in FIGS. 2A and 2B.
  • FIG. 2A shows a state when the accelerator is ON. In this state, the throttle valve 100 is open, and the air compressed by the turbocharger 101 is carried to the engine. At this time, the electromagnetic valve 1 which is an electric control air bypass valve is in a closed state.
  • FIG. 2B shows a state when the accelerator is OFF. In this state, the throttle valve 100 is closed, and the air compressed by the turbocharger 101 accumulates in the piping on the engine intake side.
  • the electromagnetic valve 1 which is an electric control air bypass valve is opened, and the compressed air is released to the upstream side of the turbocharger 101.
  • a waste gate valve 102 is provided on the engine exhaust side.
  • the valve opening operation and the valve closing operation of the electromagnetic valve 1 will be described with reference to FIGS. 3A and 3B.
  • the core 4 is excited by energization of the coil 32 via the terminal 33, and the core 4 generates a magnetic attractive force toward the core 4 side.
  • the plunger 71 and thus the valve body 73 are attracted to the core 4 side, and the valve body 73 is separated from the valve seat 15.
  • the solenoid valve 1 is opened as shown in FIG. 3A.
  • the valve body 73 is biased by a spring 10 in a direction opposite to the magnetic attractive force.
  • the solenoid valve 1 is in a closed state as shown in FIG. 3B.
  • the plunger 71 and the valve body 73 perform an operation of protruding from the case 2 away from the core 4. It can be said that the lower side of the paper surface that is the direction away from the core 4 is the protruding side.
  • FIG. 4 shows an enlarged cross-sectional view of a portion A in FIG.
  • the spring 10 is not shown.
  • FIG. 5 is a perspective view showing two constituent members of the valve body 73.
  • the valve body 73 includes a first valve body 73a disposed on the core 4 side and a second valve body 73b disposed on the protruding side.
  • the first valve body 73a and the second valve body 73b are sandwiched between the annular grooves 9 in layers.
  • the first valve body 73a has a substantially bottomed cylindrical shape, and has a hole 74 for inserting the plunger 71 at the center of the bottom surface.
  • the side surface extends from the bottom surface of the first valve body 73a toward the core 4 side.
  • Four holes 75 are further formed around the hole 74 on the bottom surface of the first valve body 73a.
  • two concave portions 76 directed to the second valve body 73b are formed on the bottom surface of the first valve body 73a.
  • the second valve body 73b has a substantially bottomed cylindrical shape, and has a hole 77 for inserting the plunger 71 at the center of the bottom surface.
  • Four arcuate pieces 78 extend from the edge of the bottom surface of the second valve body 73b toward the hole 77, that is, toward the bottom surface 91 of the annular groove 9 as shown in FIG. Between two adjacent arcuate pieces 78, a hole 79 continuous with the hole 77 is formed.
  • a side surface extends from the bottom surface of the second valve body 73b toward the protruding side.
  • two convex portions 80 directed to the first valve body 73a are formed on the bottom surface of the second valve body 73b.
  • the four arcuate pieces 78 are warped in a direction away from the first valve body 73a.
  • the degree of warping of the four arcuate pieces 78 at this time is indicated by broken lines in FIG.
  • the washer 72 is attached and fixed from this state, the four arcuate pieces 78 are elastically deformed so as to approach the first valve body 73a and are pressed against the side surface 92 of the annular groove 9 by the repulsive force.
  • the warpage of the four arcuate pieces 78 at this time is shown by solid lines in FIG.
  • the first valve body 73a and the second valve body 73b are entirely made of resin or metal. When made of metal, the four arcuate pieces 78 function like leaf springs.
  • the first valve body 73a and the second valve body 73b are partially made of resin or metal so that the four arcuate pieces 78 are made of an elastic body and the other parts are made of resin or metal. It may be. Since the four arcuate pieces 78 become elastic bodies, they can be easily elastically deformed. For example, rubber may be used as the elastic body, but it may be other than rubber.
  • the concave portion 76 included in the first valve body 73a and the convex portion 80 included in the second valve body 73b function as positioning of the first valve body 73a and the second valve body 73b.
  • the four holes 75 and the four holes 79 face each other.
  • the seal ring 12 is pressed against the valve body 73 by the pressure of the fluid flowing from the outer side space S1 into the inner side space S2 through the four holes 75 and the four holes 79, and functions as a seal.
  • FIG. 6 is a cross-sectional view showing a reference example for helping understanding of the solenoid valve 1 according to Embodiment 1 of the present invention.
  • the solenoid valve 200 as a reference example has a valve body 201 attached to the plunger 71 using the annular groove 9.
  • the valve body 201 is pressed against the side surface 92 of the annular groove 9 by a spring 202 having one end fixed to the plunger 71 and the other end fixed to the valve body 201. That is, the electromagnetic valve 200 has two springs, the spring 10 and the spring 202, in the internal space S2.
  • the plunger 71 rattles at the annular groove 9 during vibration and swings in the axial direction or in a direction perpendicular to the axial direction. Then, wear is promoted by the plunger 71, the valve body 201 and the washer 72 around the annular groove 9, and these members are also detached from the electromagnetic valve 200.
  • the plunger 71 is fixed to the valve body 201 by providing the spring 202, but the spring 202 is a member provided only for the fixing.
  • the valve body 73 having the four arcuate pieces 78 has a function of fixing the plunger 71 to the valve body 73. ing. For this reason, in the solenoid valve 1 according to the first embodiment, the spring 202 that the solenoid valve 200 as the reference example has is unnecessary, which leads to cost reduction.
  • FIG. 7A is sectional drawing which extracted the valve body 201 which the solenoid valve 200 which is a reference example has.
  • the valve body 201 has a shape with an undercut in order to realize a balanced structure, and is forcibly removed during molding using a mold.
  • the balance structure is a structure in which the seal area generated by contact between the seal ring 12 and the valve body 201 and the seal area generated by contact between the valve body 201 and the valve seat 15 are made equal.
  • the valve body 201 can be molded using the molds B to D.
  • the boundary between the molds is indicated by a broken line. In this case, when the mold C is removed, it is impossible to remove it.
  • the mold C is a horizontally divided mold.
  • the mold C is a mold that is divided into two parts in a semi-cylindrical shape.
  • the parting line that is a mating surface between the molds intersects the contact portion between the seal ring 12 and the valve body 201. For this reason, the sealing performance between the seal ring 12 and the valve body 201 is deteriorated.
  • FIG. 7B is a cross-sectional view of the first valve body 73a and the second valve body 73b that the solenoid valve 1 according to Embodiment 1 has.
  • the first valve body 73a can be molded using the molds E and F.
  • the second valve body 73b can be molded using the molds G and H.
  • the boundary between the molds is indicated by a broken line.
  • forcible removal does not occur during molding of the first valve body 73a and the second valve body 73b using the molds E to H.
  • the molds E and F are vertically divided molds. In the vertical division, the direction in which the molds are arranged is orthogonal to the case of the horizontal division.
  • the dies G and H are vertically divided dies. In the case of splitting vertically, the parting line that is the mating surface between the molds E and F and the parting line that is the mating surface between the molds G and H do not appear at the contact portion between the seal ring 12 and the valve body 201. It is possible to form in position.
  • the valve body 201 is formed by three molds BD.
  • the first valve body 73a is formed by two molds E and F.
  • the dimensional accuracy of the 1st valve body 73a as a molded article improves by reducing the number of metal molds used at the time of molding.
  • FIG. 8 is a cross-sectional view showing a modification of the second valve body 73b.
  • the second valve body 73b shown in FIG. 8 has a flange 81 and an elastic body 82 at the tip on the protruding side.
  • the elastic body 82 is rubber, for example, and is provided by baking. In addition, it is good also as the elastic body 82 using things other than rubber
  • the second valve body 73b having the flange portion 81 can be molded using a vertically divided mold having the broken line L1 or L2 shown in FIG. 8 as a boundary between the molds. In that case, the 2nd valve body 73b is shape
  • FIG. 9 is a cross-sectional view showing a state in which rubber is baked into an elastic body 82.
  • the collar 81 can be sandwiched and fixed between the molds I and J, and rubber can be injected into the annular groove 83.
  • the sealing performance with the valve seat 15 improves by having the elastic body 82 at the front-end
  • the elastic body 82 is provided on a part of the second valve body 73b.
  • the second valve body 73b may be entirely made of rubber. Even if it does in this way, the sealing performance with the valve seat 15 will improve.
  • the second valve body 73b has four arcuate pieces 78.
  • the number of arcuate pieces may be arbitrary.
  • separates each arcuate piece 78 is not provided, but it is good also as the arcuate part which all the arcuate pieces 78 connected around the hole 77, and were united.
  • the cross-section of the arcuate portion is a cross-sectional shape as shown in FIG. That is, FIG. 5 shows an example in which the arcuate portion has four arcuate pieces 78.
  • separated the arcuate part as an arcuate piece is easy to be elastically deformed.
  • the second valve element 73b disposed on the protruding side has the arched piece 78 as the arched part.
  • the first valve body 73a disposed on the core 4 side may have an arcuate piece 78 as an arcuate portion.
  • a cross-sectional view in this case is shown in FIG. Moreover, you may make it both the 1st valve body 73a and the 2nd valve body 73b have an arcuate part. In short, at least one of the first valve body 73a and the second valve body 73b may have an arcuate portion.
  • the valve body 73 has the function of fixing the plunger 71 to the valve body 73 by having the arcuate piece 78. Yes. Therefore, the plunger 71 can be fixed to the valve body 73 without providing a member only for fixing the plunger 71 to the valve body 73, for example, the spring 202 shown in the reference example. This leads to cost reduction. In addition, it is possible to improve the dimensional accuracy during molding and extend the life of the mold. Moreover, the 2nd valve body 73b arrange
  • the arcuate portion has a plurality of arcuate pieces 78 extending toward the bottom surface 91 of the annular groove 9 while warping in a direction away from the other valve body. In this way, the arcuate piece 78 facilitates elastic deformation.
  • the second valve body 73b has an elastic body 82 at the tip on the protruding side. Thereby, the sealing performance with the valve seat 15 is improved.
  • the arcuate portion of the first valve body 73a and the second valve body 73b is an elastic body. In this way, when the arcuate portion is an elastic body, it is easy to be elastically deformed.
  • any component of the embodiment can be modified or any component of the embodiment can be omitted within the scope of the invention.
  • the electromagnetic valve according to the present invention is an electromagnetic valve that does not need to be provided with a member only for fixing the plunger to the valve body because the valve body also has a function of fixing the plunger to the valve body.
  • a valve for example, it is suitable for use in an electrically controlled air bypass valve for an in-vehicle turbocharger.

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

Abstract

Selon l'invention, un premier corps de vanne (73a) et un second corps de vanne (73b) sont ajustés dans une rainure annulaire (9) formée autour de l'axe d'un piston plongeur (71). Une pièce arquée (78) incluse dans le second corps de vanne (73b) est pressée contre une surface latérale (92) de la rainure annulaire (9) par une force de répulsion générée par déformation élastique.
PCT/JP2017/005474 2017-02-15 2017-02-15 Électrovanne WO2018150484A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2017/005474 WO2018150484A1 (fr) 2017-02-15 2017-02-15 Électrovanne
JP2019500083A JP6727392B2 (ja) 2017-02-15 2017-02-15 電磁弁

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/005474 WO2018150484A1 (fr) 2017-02-15 2017-02-15 Électrovanne

Publications (1)

Publication Number Publication Date
WO2018150484A1 true WO2018150484A1 (fr) 2018-08-23

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ID=63169788

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/005474 WO2018150484A1 (fr) 2017-02-15 2017-02-15 Électrovanne

Country Status (2)

Country Link
JP (1) JP6727392B2 (fr)
WO (1) WO2018150484A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56954U (fr) * 1979-06-18 1981-01-07
JPH0972250A (ja) * 1995-07-06 1997-03-18 Aisin Seiki Co Ltd 排気還流装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017026069A1 (fr) * 2015-08-13 2017-02-16 三菱電機株式会社 Électrovanne

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56954U (fr) * 1979-06-18 1981-01-07
JPH0972250A (ja) * 1995-07-06 1997-03-18 Aisin Seiki Co Ltd 排気還流装置

Also Published As

Publication number Publication date
JP6727392B2 (ja) 2020-07-22
JPWO2018150484A1 (ja) 2019-06-27

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