JP2004003541A - Valve seat member for valve arrangement and solenoid control valve - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a valve seat member for valve arrangement capable of providing excellent assembly property, guaranteeing assembly in a normal condition, preventing leakage from a valve, and ensuring stable and high degree closing performance. <P>SOLUTION: A bonding join body is composed of a metallic circular ring member 41 and a rubberlike elastic member 42 bonded on the metallic circular ring member 41. An outermost peripheral circular ring part 41A positioned on an outer peripheral side more than the rubberlike elastic member 42 is provided on the metallic circular ring member 41. A valve housing 11 is tightened and fixed by the outermost peripheral circular ring part 41A. A face on one side of the rubberlike elastic member 42 is an airtight seal face 42B for a mounting face of the valve housing 11, and the other face is a valve seat face 42E. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a valve seat member for a valve device and an electromagnetic control valve, and more particularly to a valve seat member for a valve device and an electromagnetic control valve having a rubber-like elastic valve seat surface.
[0002]
[Prior art]
2. Description of the Related Art In a valve device such as an electromagnetic control valve, there is a valve device in which a valve seat member forming a valve seat surface with which a valve body contacts is formed of a rubber-like elastic body. In this valve device, when the valve is closed (fully closed), the valve body can be brought into close contact with the valve seat surface by elastic deformation of the valve seat surface (valve seat surface), thereby eliminating the leakage flow rate when the valve is closed, and providing an excellent valve. Deadline performance can be obtained.
[0003]
A conventional example of mounting a valve seat member to a valve housing with a rubber-like elastic body will be described with reference to FIGS. 10 and 11, reference numeral 101 denotes a valve housing, 102 denotes an annular valve seat member (rubber valve seat member) made of a rubber-like elastic body, and 103 denotes an annular metal washer member. .
[0004]
The valve housing 101 has a valve port 101A, an annular groove 101B having a diameter larger than the valve port 101A and concentric with the valve port 101A, and an annular groove having a diameter larger than the groove 101B and concentric with the groove 101B. A swaging piece 101C is provided.
[0005]
The rubber valve seat member 102 has a flat rubber packing shape slightly thicker than the depth of the concave groove 101B, and is fitted into the concave groove 101B. The washer member 103 is seated on the annular seating surface 101D between the concave groove 101B of the valve housing 101 and the swaging piece 101C, and abuts on the valve seat member 102 fitted in the concave groove 101B on the inner peripheral side 103A. By caulking with the caulking piece 101C, the outer peripheral side 103B is sandwiched between the caulking piece 101C and the annular seating surface 101D, and caulked and fixed to the valve housing 101. The rubber valve seat member 102 defines a valve seat surface 102A inside the inner peripheral side 103A of the washer member 103.
[0006]
An annular ridge 103C is formed on the contact surface of the washer member 103 with the rubber valve seat member 102, and the annular ridge 103C bites into the rubber valve seat member 102, so that the rubber valve seat member 102 A retaining is performed.
[0007]
[Problems to be solved by the invention]
If the valve body repeatedly collides with the valve seat surface 102A of the rubber valve seat member 102, and the valve seat surface 102A is deformed, the control valve characteristic value changes. In addition, durability against deformation of the valve seat surface 102A due to repeated collision of the valve body with the valve seat surface 102A of the rubber valve seat member 102 is required.
[0008]
Therefore, the rubber valve seat member 102 is selected to have a relatively high rubber hardness and a small thickness. The valve seat member 102 having a small thickness is easily deformed, and if the rubber valve seat member 102 has burrs at the time of molding, the rubber valve seat member 102 cannot be properly incorporated into the concave groove 101B, as shown in FIG. In some cases, the valve seat surface 102A may be lifted.
[0009]
Also, when the washer member 103 shifts or deforms when the washer member 103 is swaged, the annular ridge 103C bites into the rubber valve seat member 102, and accordingly, in response to the shift or deformation of the washer member 103. The rubber valve seat member 102 bends, and this may cause the valve seat surface 102A to be lifted as shown in FIG.
[0010]
If the valve seat surface 102A is lifted, the valve body does not uniformly contact the valve seat surface 102A when the valve is closed. Since the valve seat surface 102A has rubber-like elasticity, even if the valve body does not uniformly contact the valve seat surface 102A when the valve is closed, it is possible to prevent valve leakage to some extent by elastic deformation of the valve seat surface 102A. However, it is difficult to completely eliminate valve leakage.
[0011]
In a fuel cell system, a flow control valve for controlling the flow rate of hydrogen gas is required to have no valve leakage and to have high shut-off performance. It will be difficult to meet performance. Further, the rubber valve seat member 102 is a fine component, and must be incorporated into the concave groove 101B of the valve housing 101 so as not to damage the valve seat surface 102A, but this is very difficult.
[0012]
The present invention has been made in order to solve the above problems, has excellent assemblability, guarantees that it can be assembled in a normal state, has no valve leakage, and can secure a stable advanced shutoff performance. It is another object of the present invention to provide a valve seat member for a valve device capable of reducing the number of parts and an electromagnetic control valve incorporating the valve seat member for the valve device.
[0013]
[Means for Solving the Problems]
In order to achieve the above object, a valve seat member for a valve device according to the present invention has a metal annular member and a rubber-like elastic member adhered to the metal annular member, The ring member includes an outermost annular portion located on the outer peripheral side of the rubber-like elastic member, the outermost annular portion forms a fastening portion for fixing to the valve housing, and one surface of the rubber-like elastic member is a valve housing. And the other surface of the rubber-like elastic member forms a valve seat surface.
[0014]
A valve seat member for a valve device according to the present invention forms an adhesive joint between a rubber-like elastic member and a metal annular member that form a valve seat surface, and includes an outermost peripheral annular portion located on the outer peripheral side of the rubber-like elastic member. The fastening to the valve housing is performed by caulking or the like. As a result, the fastening and fixing force due to caulking or the like is less likely to irregularly act on the rubber-like elastic member of the valve seat member, and the fastening and fixing of the valve seat member to the valve housing can be easily and stably performed. It is possible to avoid causing unhealthy deformation of the rubber-like elastic member in the attached state.
[0015]
In the valve seat member for a valve device according to the present invention, the rubber-like elastic member is bonded to the metal ring member by insert molding with the metal ring member by vulcanization bonding or a corresponding reaction at the time of rubber molding, that is, An adhesive bonded body of a rubber-like elastic member and a metal annular member having stable adhesive strength can be obtained without being filled and filled with a special adhesive.
[0016]
The valve seat member for a valve device according to the present invention is preferably configured such that an annular sealing ridge is formed so as to protrude from an air-tight sealing surface of the rubber-like elastic member, and a circular ring is formed on a valve seat surface of the rubber-like elastic member. An annular valve element projecting ridge is formed so as to protrude.
[0017]
Further, in the valve seat member for a valve device according to the present invention, preferably, the metal annular member is an innermost annular portion located on an inner peripheral side of the rubber-like elastic member, and the outermost annular portion. And a disk portion connecting the innermost annular portion, and the disk portion has annular concave grooves on both front and back surfaces between the outermost annular portion and the innermost annular portion. A rubber-like elastic member is bonded and arranged in each of the concave grooves.
[0018]
In this case, a through hole for rubber pouring is formed in the disc portion to connect the concave grooves on both front and back surfaces of the disc portion to each other, and a rubber-like elastic member is filled and molded into the concave grooves on both front and back surfaces by a single rubber molding. be able to. Alternatively, rubber-like elastic members of different materials may be individually bonded and arranged in the grooves on both the front and back surfaces of the disk portion.
[0019]
Further, in order to achieve the above-mentioned object, an electromagnetic control valve according to the present invention has a valve body for adjusting the opening of a valve port in a valve housing, and the electromagnetic force generated by the electromagnetic solenoid device and the electromagnetic force against the electromagnetic force are controlled. The valve body is moved in the axial direction of the valve port by an equilibrium relationship with the spring force of the spring means, and the opening degree of the valve port is changed by the movement, and is fixedly mounted on the valve housing. The valve seat member of the valve body is constituted by the valve device valve seat member according to the invention described above.
[0020]
In the electromagnetic control valve according to the present invention, the valve housing has a groove into which the valve device valve seat member is fitted in an outer peripheral portion of the valve port, and a caulking piece formed in the outer peripheral portion of the groove. The outermost annular portion of the valve seat for a valve device may be sandwiched and fixed between the valve device and the bottom surface of the groove by the caulking of the caulking piece.
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 shows an embodiment of an electromagnetic control valve incorporating a valve seat for a valve device according to the present invention.
[0022]
The electromagnetic control valve has a valve housing 11. In the valve housing 11, an inlet port 12, an outlet port 13, a valve chamber (primary chamber) 14, a valve port 15, an upper pressure equalizing chamber (secondary chamber) 16, and a spring accommodating chamber (lower pressure equalizing chamber) 17 are formed. ing. The valve chamber 14 is on one side (lower side) of the valve port 15 and directly communicates with the inlet port 12 through the communication passage 11A, and houses the valve body 20. The upper pressure equalizing chamber 16 is on the other side (upper side) of the valve port 15 and directly communicates with the outlet port 13 through the communication passage 11B.
[0023]
The valve port 15 is located between the valve chamber 14 and the upper pressure equalizing chamber 16, and a valve seat member 19 is fixed to the valve housing 11 on the valve chamber 14 side of the valve port 15.
[0024]
The valve body 20 sets the opening degree of the valve port 15 according to the valve lift direction with respect to the valve seat member 19, that is, the positional relationship of the valve port 15 in the axial direction. The opening of the valve port 15 is increased by decreasing the opening of the valve port 15 and moving it in the opposite downward direction. A differential pressure ΔP = P1−P2 between the internal pressure (primary pressure) P1 of the valve chamber 14 and the internal pressure (secondary pressure) P2 of the upper pressure equalizing chamber 16 acts on the valve body 20. The area where the differential pressure ΔP acts on the valve body 20 is determined by the inner diameter of the valve port 15 (the effective pressure receiving diameter of the valve body 20).
[0025]
A valve stem (valve stem) 21 is integrally provided on one side (upper side) of the valve body 20. The valve rod 21 extends across the upper pressure equalizing chamber 16 in the axial direction (vertical direction) of the valve port 15 and also serves as a plunger rod of an electromagnetic solenoid device 51 described later.
[0026]
A stem guide cylinder 22 also serving as a suction element of an electromagnetic solenoid device 51 is airtightly fixed to the valve housing 11. The valve stem 21 is inserted into the center hole 23 of the stem guide cylinder 22. Note that there is a gap 24 between the center hole 23 and the valve rod 21, and the gap 24 allows the plunger chamber 56 and the upper pressure equalizing chamber 16 to be equalized.
[0027]
The spring housing chamber 17 is formed at an end (lower end) of the valve housing 11, closed by a fixed-side spring retainer 26 screwed to the valve housing 11 and a flexible diaphragm 27, and formed in the valve housing 11. The pressure equalizing passage 28 communicates with the upper pressure equalizing chamber 16. Thereby, equalization of the spring accommodating chamber 17 and the upper pressure equalizing chamber 16 is achieved.
[0028]
The outer periphery of the diaphragm 27 is hermetically fixed to the valve housing 11 by a ring-shaped fixing screw member 30 together with a stopper ring member 29 for setting a fully open position of the valve body 20. The center of the diaphragm 27 is airtightly connected to the valve body 20 by a ball receiving member 31 fixed to the distal end portion 20A of the valve body 20. With this structure, the valve chamber 14 and the spring accommodating chamber 17 are completely airtightly separated.
[0029]
A differential pressure ΔP between the internal pressure P1 of the valve chamber 14 and the internal pressure of the spring housing chamber 17, ie, the internal pressure P2 of the upper pressure equalizing chamber 16, acts on the diaphragm 27. The area where the differential pressure ΔP acts on the diaphragm 27 is determined by the effective pressure receiving diameter of the diaphragm 27, and the effective pressure receiving diameter of the diaphragm 27 is set to be equal to the inner diameter of the valve port 15.
[0030]
A movable spring retainer 32 is movably disposed in the spring housing 17 in the axial direction. A compression coil spring 33 is provided between the movable spring retainer 32 and the fixed-side spring retainer 26.
[0031]
The upper surface of the movable spring retainer 32 is a spherical receiving portion 32A, and a ball member (steel ball) 34 is sandwiched between the spherical receiving portion 32A and the ball receiving member 31 on the valve body 20 side. . The ball member 34 is slidably engaged with the inner diameter portion 30 </ b> A of the fixed screw member 30, and is movably supported in the axial direction by the fixed screw member 30. A communication hole 30 </ b> B for pressure equalization is formed through the fixing screw member 30.
[0032]
The ball member 34 abuts the spherical receiving portion 32A of the movable spring retainer 32 on one side in a spherical articulation manner, and the ball member 34 abuts on the ball receiving member 31 in a spherical articulation manner. To form an automatic centripetal connection structure, and transmits the spring force of the compression coil spring 33 to the valve body 20 as an upward valve closing force.
[0033]
An electromagnetic solenoid device 51 is attached to an end (upper end) of the valve housing 11. The electromagnetic solenoid device 51 includes a bottom plate 52 fixed to the valve housing 11, an outer box 53 attached to the bottom plate 52, a plunger case 54 fixed to an upper part of the stem guide cylinder 22 serving as a suction element, and an outer box. And a magnetic guide member 55 attached to the upper end of the plunger 53, and defines a plunger chamber 56 in the plunger case 54.
[0034]
The plunger chamber 56 accommodates a plunger 57 fixed to the upper end of the valve stem 21. In the plunger 57, a pressure equalizing hole 57A for equalizing a space above and below the plunger 57 in the plunger case 54 is provided. A plunger spring 58 is provided between the plunger case 54 and the plunger 57.
[0035]
An electromagnetic coil portion 59 fitted to the outer periphery of the stem guide cylinder 22 and the plunger case 54 is provided inside the outer box 53, and the upper end surface of the stem guide cylinder 22 is excited by excitation of the electromagnetic coil section 59. It becomes the magnetic attraction surface 60 of the plunger 57.
[0036]
The electromagnetic control valve having the above configuration operates as follows.
When the electromagnetic coil portion 59 of the electromagnetic solenoid device 51 is energized, an electromagnetic force corresponding to the amount of the current is generated, and the plunger 57 is attracted toward the magnetic attraction surface 60 by the magnetic attraction force according to the electromagnetic force. . This suction force acts on the valve body 20 by the valve rod 21.
[0037]
As a result, the valve element 20 determines the vertical movement position (valve open position) based on the balance between the attraction force generated by the electromagnetic force generated by the electromagnetic solenoid device 51 and the spring force of the compression coil spring 33. The opening of the port 15 is determined. By the opening degree of the valve port 15, the flow rate of the fluid flowing from the inlet port 12 to the outlet port 13 through the valve chamber 14, the valve port 15, and the upper pressure equalizing chamber 16 is quantitatively measured.
[0038]
Further, in a state where the electromagnetic force is not applied to the electromagnetic solenoid device 51 and the electromagnetic force is 0, the valve body 20 is seated on the valve seat member 19 by the spring force of the compression coil spring 33 as shown in FIG. 15 is closed and the valve is closed.
[0039]
Assuming that the inner diameter of the valve port 15 (the effective pressure receiving diameter of the valve element 20) is φD and the effective pressure receiving diameter of the diaphragm 27 is φDf, the valve element 20 has an internal pressure P1 of the valve chamber 14 and an internal force P2 of the upper pressure equalizing chamber 16. Due to the upward pressure (πD ² / 4) ΔP and the downward force generated on the diaphragm 27 side (πDf ² / 4) Because ΔP is φD = φDf, the flow rates can be canceled each other, and the opening and closing of the valve element 20 can be controlled without being affected by the differential pressure ΔP.
[0040]
Next, the valve seat member 19 and the mounting structure thereof according to the present invention will be described with reference to FIGS.
[0041]
The valve seat member 19 has a metal annular member 41 and a rubber-like elastic member 42 adhered to the metal annular member 41, and is adhesively bonded between the rubber-like elastic member 42 and the metal annular member 41. I am in the body.
[0042]
The metal annular member 41 is made of stainless steel, brass, an aluminum alloy, or the like, and includes an outermost annular portion 41A located on the outer peripheral side (outer diameter side) of the rubber-like elastic member 42, and a rubber-like elastic member 41. The disk portion 41C includes an innermost annular portion 41B located on the inner peripheral side (inner diameter side), and a thin disk portion 41C connecting the outermost annular portion 41A and the innermost annular portion 41B. Annular concave grooves 41D and 41E are formed on the front and back surfaces between the outermost annular portion 41A and the innermost annular portion 41B, respectively. A plurality of through holes 41F for rubber pouring are formed in the disk portion 41C at equal intervals in the circumferential direction.
[0043]
In the concave grooves 41D and 41E, a rubber-like elastic member 42 made of a rubber material such as HNBR is molded and bonded by insert molding. Mold-filling adhesion is vulcanization adhesion or the equivalent of the reaction at the time of rubber molding, and a stable adhesive strength can be obtained without using a special adhesive.
[0044]
Thereby, an adhesive bonded body of the rubber-like elastic member 42 and the metal annular member 41 with stable adhesive strength can be easily obtained with high productivity.
[0045]
Since the through hole 41F for rubber pouring is formed through the disk portion 41C, the rubber is inserted from one side of the concave grooves 41D and 41E to the other side during insert molding of the rubber-like elastic member 42 into the concave grooves 41D and 41E. The material can be poured.
[0046]
Thus, the rubber-like elastic member 42 can be filled and molded into the concave grooves 41D and 41E on both the front and back surfaces of the disk portion 41C by a single rubber molding (insert molding).
[0047]
Of the rubber-like elastic member 42, the upper surface of the rubber-like elastic member portion 42A located in the concave groove 41D forms an airtight sealing surface with respect to the mounting surface 11C of the valve housing 11.
[0048]
An annular sealing ridge 42C protrudes from an airtight sealing surface 42B formed by the upper surface of the rubber-like elastic member portion 42A. The hermetic seal surface 42B is slightly lower than the upper surfaces of the outermost annular portion 41A and the innermost annular portion 41B of the metal annular member 41, and the size of the ridge 42C for close contact seal is smaller than that of the metallic annular member 41. The dimensions are set to protrude from the upper surfaces of the outermost annular portion 41A and the innermost annular portion 41B by a specified dimension T1 (see FIG. 5).
[0049]
Of the rubber-like elastic member 42, the lower surface of the rubber-like elastic member portion 42D located in the concave groove 41E forms a valve seat surface 42E. The valve seat surface 42E is substantially the same as the lower surface of the outermost annular portion 41A of the metallic annular member 41, and is defined by the lower surface of the innermost annular portion 41B of the metallic annular member 41 in a specified dimension T2 (see FIG. 5). ) Only protruding.
[0050]
The valve seat member mounting groove portion 11D formed around the valve port 15 of the valve housing 11 has a hook shape formed by a bottom surface (mounting surface) 11C and an inner peripheral surface 11E on the outer diameter side of the bottom surface 11C. Is open to the valve port 15 side.
[0051]
The outer diameter of the outermost annular portion 41A of the metallic annular member 41 is substantially equal to the inner diameter of the inner peripheral surface 11E of the valve seat member mounting groove 11D, and the innermost annular portion 41B is substantially equal to the inner diameter of the valve port 15. equal.
[0052]
The valve seat member 19 is fitted into the valve seat member mounting groove 11D in a state where the outermost peripheral annular portion 41A of the metal annular member 41 is fitted to the inner peripheral surface 11E of the valve seat member mounting groove 11D, and is made of rubber. The contact sealing protrusion 42C of the elastic member portion 42A contacts the bottom surface 11C.
[0053]
In this assembled state, the annular caulking piece 11F formed on the valve housing 11 along the inner peripheral surface 11E of the seat member mounting groove 11D is turned inward as shown in FIG. I do.
[0054]
As a result, the outermost annular portion 41A of the metallic annular member 41 is sandwiched between the swaged piece 11F and the bottom surface 11C of the valve seat member mounting groove 11D, and the outermost annular portion 41A is connected to the valve seat member 19 by the valve. The valve seat member 19 is fixed to the valve housing 11 by forming a fastening portion for the housing 11.
[0055]
Due to the above-described structure of the valve seat member 19 and the fastening and fixing structure of the valve seat member 19 to the valve housing 11, the fastening and fixing force due to caulking acts on the rubber-like elastic member 42 of the valve seat member 19 irregularly in the radial direction or the like. Therefore, the fastening and fixing of the valve seat member 19 to the valve housing 11 can be easily and stably performed, and undesired deformation such as floating of the rubber-like elastic member 42 in the assembled state may occur. Absent.
[0056]
Further, the valve seat member 19 is fitted on the valve seat member mounting groove portion 11D of the valve housing 11 with the outermost annular portion 41A made of metal on the outer peripheral side, and the inner peripheral side is opened to the valve port 15 and is not restrained. Even if there is a burr at the time of rubber molding, the work of assembling the valve seat member 19 into the valve seat member mounting groove portion 11D can be easily and accurately performed, and the possibility of damaging the valve seat surface 42E is reduced.
[0057]
Further, the valve seat member 19 is an adhesive bonded body of the rubber-like elastic member 42 and the metal ring member 41. Since the metal ring member 41 forms a highly rigid skeleton, the handling of the valve seat member 19 is made of rubber. The number of parts is reduced as compared with the case where the rubber elastic member alone and the metal washer are used.
[0058]
As a result, the assembling guaranty of the valve seat member 19 in a normal state is improved, the valve body 20 abuts the valve seat surface 42E uniformly, and a stable and high-level shutoff characteristic without valve leakage can be secured.
[0059]
The substantial valve seat surface 42E with which the valve element 20 abuts is a region on the inner diameter side of the caulking piece 11F, and the through-hole 41F for pouring the rubber into this region has a diameter as shown in the figure. It is provided at a position deviated in the direction. Thus, even if sinkage occurs during solidification of rubber molding in the area of the through hole 41F, the substantially flatness of the valve seat surface 42E is maintained.
[0060]
When the valve seat member 19 is swaged, the contact sealing ridge 42C of the airtight sealing surface 42B comes into contact with the bottom surface 11C of the valve seat member mounting groove 11D and is crushed and adhered. And the airtightness between them is sufficiently ensured, and the occurrence of back leakage is reliably avoided.
[0061]
6 to 9 show another embodiment of the valve seat member according to the present invention. 6 to 9, parts corresponding to those in FIG. 5 are denoted by the same reference numerals as those in FIG. 5, and description thereof will be omitted.
[0062]
The valve seat member 19 shown in FIGS. 6 and 7 has a ring-shaped valve element projecting ridge 42F having a triangular cross section or a semicircular cross section protrudingly formed on a valve seat surface 42E of a rubber-like elastic member portion 42D. I have.
[0063]
In this embodiment, valve closing is performed by the valve element 20 (see FIG. 1) hitting the ridge 42F for contacting the valve element, and the contact pressure at the time of valve tightening is increased. The improved advanced shutoff characteristics can be obtained.
[0064]
In this embodiment, as shown in the figure, a through hole 41F for pouring rubber is formed at a position radially deviated from the ridge 42F for contacting the valve element.
[0065]
The valve seat member 19 shown in FIG. 8 does not have the through hole 41F for pouring rubber, and the rubber-like elastic member portions 42A and 42D are individually molded and filled into the concave grooves 41D and 41E on both the front and back surfaces of the disk portion 41C. Glued.
[0066]
In this embodiment, the rubber-like elastic member portion 42A of the concave groove 41D and the rubber-like elastic member portion 42D of the concave groove 41E can be made of different rubber-like elastic materials. As a result, the rubber-like elastic member portion 42A of the concave groove 41D is made of a rubber-like elastic material having a relatively low hardness suitable for hermetic sealing with the valve housing 11 and easy to adhere to the valve housing 11. The rubber-like elastic member portion 42D may be made of a rubber-like elastic material having a relatively high hardness in order to provide required durability against repeated collisions of the valve body.
[0067]
In the valve seat member 19 shown in FIG. 9, the metal annular member 41 is only the outermost annular portion 41A which forms a fastening portion for the valve housing 11, and the rubber-like elastic member 42 is molded, filled and adhered inside. The upper surface of the rubber-like elastic member 42 is an airtight sealing surface 42B, and the lower surface is a valve seat surface 42E.
[0068]
Also in this embodiment, the outermost peripheral annular portion 41A of the metallic annular member 41 is sandwiched between the swaged piece 11F and the bottom surface 11C of the valve seat member mounting groove 11D, and the valve seat member 19 is fixed to the valve housing 11. By doing so, the fastening and fixing force due to caulking does not irregularly act on the rubber-like elastic member 42 of the valve seat member 19 in the radial direction or the like, and the fastening and fixing of the valve seat member 19 to the valve housing 11 is easily stabilized. In the assembled state, the rubber-like elastic member 42 does not undergo unhealthy deformation such as lifting.
[0069]
As a result, the assembling guaranty of the valve seat member 19 in a normal state is improved, the valve body 20 abuts on the valve seat surface 42E uniformly, and a stable advanced shut-off characteristic without valve leakage can be secured.
[0070]
In any of the embodiments, the fixing of the valve seat member 19 to the valve housing 11 is not limited to the caulking fixing, and the outermost annular portion 41A of the metallic annular member 41 is welded, brazed, and screwed. It can also be fixed by such as.
[0071]
【The invention's effect】
As can be understood from the above description, according to the valve seat member for a valve device according to the present invention, the rubber-like elastic member forming the valve seat surface and the metal annular member form an adhesive joint, and the rubber-like elastic member The fastening and fixing to the valve housing is performed by caulking or the like by the outermost peripheral annular portion located on the outer peripheral side, so that the fastening and fixing force due to caulking or the like does not easily act on the rubber-like elastic member of the valve seat member irregularly, and the valve seat The fastening and fixing of the member to the valve housing can be easily and stably performed, and it is ensured that the rubber-like elastic member does not undergo unhealthy deformation in the assembled state and is assembled in a normal state. There is no leakage, and a stable and advanced shutoff performance can be secured.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing one embodiment of an electromagnetic control valve incorporating a valve seat for a valve device according to the present invention.
FIG. 2 is an enlarged view of a portion E in FIG. 1;
FIG. 3 is a sectional view showing an assembly of a valve seat for a valve device according to the present invention to a valve housing.
FIG. 4 is a plan view of a metal annular member of a valve seat member for a valve device according to the present invention.
FIG. 5 is an enlarged sectional view of a main part of one embodiment of a valve seat member for a valve device according to the present invention.
FIG. 6 is an enlarged sectional view of a main part of another embodiment of the valve seat member for a valve device according to the present invention.
FIG. 7 is an enlarged sectional view of a main part of another embodiment of the valve seat member for a valve device according to the present invention.
FIG. 8 is an enlarged sectional view of a main part of another embodiment of the valve seat member for a valve device according to the present invention.
FIG. 9 is an enlarged sectional view of a main part of another embodiment of the valve seat member for a valve device according to the present invention.
FIG. 10 is a cross-sectional view showing an assembly of a conventional valve seat for a valve device to a valve housing.
FIG. 11 is an enlarged sectional view showing an assembled state of a conventional valve seat for a valve device.
[Explanation of symbols]
11 Valve housing
11C Bottom (mounting surface)
11D Valve seat mounting groove
11E Inner circumference
11F caulking piece
14 Valve room
15 Valve port
16 Upper equalizing chamber
17 Spring accommodation room
19 Valve seat member
20 valve body
41 Metal ring member
41A Outer circumference ring
41B Inner circumference ring
41D, 41E groove
41F Through hole
42 Rubber-like elastic member
42A, 42D rubber-like elastic member
42B hermetic sealing surface
42C ridge for close seal
42E Valve seat surface
42F ridge for valve body
51 Electromagnetic solenoid device
57 plunger
59 Electromagnetic coil

Claims (9)

A metal annular member, having a rubber-like elastic member adhered to the metal annular member,
The metal annular member includes an outermost peripheral annular portion located on the outer peripheral side of the rubber-like elastic member, and the outermost peripheral annular portion forms a fastening portion for the valve housing,
One surface of the rubber-like elastic member forms an airtight seal surface with respect to the mounting surface of the valve housing, and the other surface of the rubber-like elastic member forms a valve seat surface.
A valve seat member for a valve device, characterized in that: The valve seat member for a valve device according to claim 1, wherein the rubber-like elastic member is molded, filled and bonded to the metal annular member by insert molding with the metal annular member. The valve seat member for a valve device according to claim 1, wherein an annular ridge for close contact sealing is formed to project from an airtight sealing surface of the rubber-like elastic member. The valve seat member for a valve device according to any one of claims 1 to 3, wherein an annular ridge for contacting the valve body is formed so as to protrude from a valve seat surface of the rubber-like elastic member. The metallic annular member includes an innermost annular portion located on the inner peripheral side of the rubber-like elastic member, and a disk portion connecting the outermost annular portion and the innermost annular portion. The disk portion has annular concave grooves on both front and back surfaces between the outermost annular portion and the innermost annular portion, and a rubber-like elastic member is provided in each of the concave grooves. The valve seat member for a valve device according to claim 1, wherein the valve seat member is bonded and arranged. 6. The valve seat member for a valve device according to claim 5, wherein a through hole for pouring rubber is formed in the disc portion to connect the concave grooves on both front and back surfaces of the disc portion to each other. 6. The valve seat member for a valve device according to claim 5, wherein rubber-like elastic members of different materials are individually bonded and arranged in the concave grooves on both front and back surfaces of the disk portion. The valve housing has a valve body for adjusting the opening degree of the valve port, and the valve body is connected to the valve port by an equilibrium relationship between an electromagnetic force generated by an electromagnetic solenoid device and a spring force by a spring means opposing the electromagnetic force. In an electromagnetic control valve that moves in the axial direction and changes the opening of the valve port by the movement,
An electromagnetic control valve, wherein a valve seat member of the valve body fixedly mounted on the valve housing is constituted by the valve seat member for a valve device according to any one of claims 1 to 7. The valve housing has a hook-shaped groove in which the valve device valve seat member is fitted in an outer peripheral portion of the valve port, and a caulking piece formed in an outer peripheral portion of the groove, and caulking the caulked piece. The electromagnetic control valve according to claim 8, wherein the outermost annular portion of the valve seat member is sandwiched and fixed between the groove portion and a bottom surface of the valve device.

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