JP2018054058A - On-off valve and its process of manufacture, cap member insertion structure and its process of manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an on-off valve capable of increasing strength of a valve seat part of a valve seat member and performing a stable sealing between a valve part of a valve member and the valve seat part of the valve seat member for a long period of time.SOLUTION: This ON-OFF valve comprises a valve seat member 30 provided with a valve seat part 36; and a valve member 18 movably installed in directions to approach or move away in respect to the valve seat 36 of the valve seat member 30. The valve seat member 30 comprises a peripheral side wall 32 and an end wall 34 arranged at one end part of the peripheral side wall. The valve seat part 36 is installed at the end wall 34. The valve member 18 has a valve main body 26 installed to be movable in a direction to approach to and move away from the valve seat part 36 of the valve seat member 30 and one end part of this valve main body 26 is provided with a valve part 28. The valve seat part 36 of the valve seat member 30 is installed at one surface of the end wall 34 and the other surface of this end wall 34 is provided with a recess part 42 in correspondence with the valve seat part 36.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an on-off valve for turning on (allowing) and turning off (blocking) a flow of a fluid and a method of manufacturing the same. The present invention also relates to an insertion structure of a cap-shaped insertion member used for an on-off valve or the like and a manufacturing method thereof.

  An electromagnetic on-off valve is widely used as an example of the on-off valve (see, for example, Patent Document 1). The electromagnetic on-off valve includes an electromagnetic coil, a core disposed inside the electromagnetic coil, a valve member provided with a valve portion, and a valve seat member provided with a valve seat portion. . A passage hole through which a fluid flows is provided in the valve seat portion of the valve seat member, and an elastic biasing member (for example, a coil spring) is interposed between the core and the valve member.

  In such an electromagnetic on-off valve, when no current flows through the electromagnetic coil, the valve member is elastically biased in the direction close to the valve seat portion of the valve seat member by the action of the elastic biasing member, and the valve of the valve member The portion is seated on the valve seat portion of the valve seat member to close the passage hole, and the flow of fluid through the passage hole is blocked. Further, when a current flows through the electromagnetic coil, the valve member is electromagnetically attracted to the core by the electromagnetic force generated by the electromagnetic coil, whereby the valve member resists the action of the elastic biasing member. Moving in a direction away from the seat, the passage hole is opened, and fluid flow through the passage hole is allowed.

  In addition, such an electromagnetic on-off valve may employ an insertion structure in which the valve seat member is inserted into the valve housing of the electromagnetic on-off valve. When this insertion structure is adopted, the valve seat member has a cylindrical peripheral side wall and an end wall provided at one end of the peripheral side wall, and a valve seat portion and a passage hole are provided in the end wall. The peripheral side wall of the valve seat member is inserted inside the inner peripheral surface of the valve housing.

JP-A-7-133877

  In recent years, there has been a trend toward miniaturization in the field of electromagnetic on-off valves, and even when miniaturized, the valve seat portion of the valve seat member needs to have sufficient strength. As a result of many opening and closing operations, there is a possibility that the valve seat is worn and the fluid flow cannot be reliably blocked.

  In addition, when the above-described insertion structure of the valve seat member is adopted, the peripheral side wall of the valve seat member is caused to be the inner periphery of the valve housing due to a processing error of the peripheral side wall of the valve seat member, slight deformation of the peripheral side wall in the manufacturing process, It can be difficult to insert inside the surface.

  An object of the present invention is to provide an on-off valve that can increase the strength of a valve seat portion of a valve seat member and can stably seal the valve portion of the valve member and the valve seat portion of the valve seat member over a long period of time. It is.

  Another object of the present invention is to provide a cap-shaped member insertion structure capable of easily and reliably inserting a cap-shaped insertion member such as a valve seat member into an outer member such as a valve housing. is there.

An on-off valve according to a first aspect of the present invention is a valve seat member provided with a valve seat portion, and a valve mounted so as to be movable in a direction approaching and separating from the valve seat portion of the valve seat member. With members,
The valve seat member has a peripheral side wall and an end wall provided at one end of the peripheral side wall, the valve seat part is provided in the end wall, and a passage hole penetrates the valve seat part. Provided,
The valve member has a valve body that is mounted so as to be movable in the direction of approaching and separating from the valve seat portion of the valve seat member, and a valve portion is provided at one end of the valve body. The valve portion is configured to be seated on the valve seat portion of the valve seat member and close the passage hole,
The valve seat portion of the valve seat member is provided on one side of the end wall, and the other surface of the end wall of the valve seat member is provided with a recess corresponding to the valve seat portion, and the passage hole Is provided through the valve seat and the recess.

  In the on-off valve according to claim 2 of the present invention, the valve seat portion of the valve seat member is provided with a tapered re-indentation.

  In the on-off valve according to claim 3 of the present invention, the opening end of the peripheral side wall of the valve seat member is provided with an annular inclined surface that inclines radially outward toward the end wall. It is characterized by being.

  The on-off valve according to claim 4 of the present invention further includes an electromagnetic coil for generating a magnetic field, a core on which a magnetic field from the electromagnetic coil acts, and a cylinder formed of a non-magnetic material, The valve body of the valve member is movably disposed radially inward of the cylinder, an elastic biasing member is interposed between the core and the valve body, and the elastic biasing member includes the valve member. The valve seat member is elastically biased toward the valve seat portion.

According to a fifth aspect of the present invention, there is provided the on-off valve manufacturing method, wherein the valve seat member has a valve seat portion and a passage hole, and the valve seat member moves in a direction approaching and separating from the valve seat portion. A valve member mounted freely, wherein the valve seat member has a peripheral side wall and an end wall provided at one end of the peripheral side wall, and the valve seat part and the passage hole are the end wall. In the manufacturing method of the on-off valve provided in
A valve seat portion / recess forming step for forming the valve seat portion on one side of the end wall of the valve seat member by pressing and forming a recess on the other surface of the end wall; A passage hole forming step of forming a passage hole from the valve seat portion side through the valve seat portion and the concave portion.

  In the on-off valve manufacturing method according to claim 6 of the present invention, after the passage hole forming step, a taper-shaped re-indentation is formed around the passage hole in the valve seat portion of the valve seat member by pressing. A re-indentation step is performed, and in the re-indentation formation step, a re-indentation die is applied to the valve seat portion by applying a re-indentation mold from the one side of the valve seat portion with a predetermined pressure. Features.

  In the on-off valve manufacturing method according to claim 7 of the present invention, in the valve seat / recess forming step, the valve seat forming mold acts on the one surface of the end wall of the valve seat member. At the same time, a recess forming mold acts on the other surface of the end wall, and the valve seat portion on the one surface side of the end wall and the recess on the other surface side of the end wall are simultaneously formed. It is characterized by that.

The cap-shaped member insertion structure according to claim 8 of the present invention is the cap-shaped insertion member insertion structure in which the cap-shaped insertion member is inserted into the inner peripheral side of the peripheral side wall of the outer member.
The cap-shaped insertion member has a peripheral side wall that is inserted into the inner peripheral side of the peripheral side wall of the outer member, and an end wall that is provided at one end of the peripheral side wall. The other end of the side wall is provided with an annular inclined surface that is inclined outward in the radial direction toward the end wall.

The cap-shaped member insertion structure manufacturing method according to claim 9 of the present invention is a cap-shaped insertion member insertion structure manufacturing method in which the cap-shaped insertion member is inserted into the inner peripheral side of the peripheral side wall of the outer member. ,
An intermediate cap-shaped member having a disk-like member drawn and having an end wall and a peripheral side wall extending from the end wall, and an opening-side peripheral wall portion of the peripheral side wall extending radially outward toward the opening end side Forming an intermediate cap-shaped member, cutting the intermediate cap-shaped member into a predetermined size by trimming the opening-side peripheral wall portion of the peripheral side wall of the intermediate cap-shaped member, and the intermediate cap A cap-shaped member forming and finishing step in which the opening-side peripheral wall portion of the peripheral side wall of the intermediate cap-shaped member is shaped so as to extend substantially linearly and finished into a cap-shaped member after the step of cutting the shaped member It is characterized by including these.

  Furthermore, in the manufacturing method of the insertion structure of the cap-shaped insertion member according to claim 10 of the present invention, the intermediate cap-shaped member may be inserted between the intermediate cap-shaped member forming step and the intermediate cap-shaped member cutting step. An opening-side peripheral wall portion forming step of forming the opening-side peripheral wall portion of the peripheral side wall at a predetermined inclination angle is performed.

  According to the on-off valve of the first aspect of the present invention, the valve seat portion is provided on one side of the end wall of the valve seat member, and the concave portion is provided on the other surface of the end wall corresponding to the valve seat portion. Therefore, the strength of the valve seat portion of the end wall is increased by work hardening by forming this recess, and as a result, the seal between the valve portion of the valve member and the valve seat portion of the valve seat member is stable over a long period of time. Can be done.

  Further, according to the on-off valve according to claim 2 of the present invention, since the valve seat portion of the valve seat member is provided with the taper-shaped re-indentation, the valve seat portion is formed by flattening the surface of the valve seat portion. The burr to the side can be eliminated and the strength of the surface can be increased.

  Further, according to the on-off valve according to claim 3 of the present invention, the opening end of the peripheral side wall of the valve seat member is provided with the annular inclined surface that inclines toward the end wall toward the radially outer side. Therefore, when this valve seat member is inserted and assembled, it can be assembled easily and reliably.

  The on-off valve according to claim 4 of the present invention includes an electromagnetic coil for generating a magnetic field, a core on which a magnetic field from the electromagnetic coil acts, and a cylinder formed of a nonmagnetic material, Since the elastic biasing member is interposed between the core and the valve body of the valve member, it can be advantageously applied as an electromagnetic on-off valve.

  According to the on-off valve manufacturing method of the fifth aspect of the present invention, in the valve seat / recess forming process, the valve seat is formed on one side of the end wall of the valve seat member by pressing, and Since the concave portion is formed on the other surface of the end wall by press working, the strength of the valve seat portion of the valve seat member can be increased by work hardening by press working. Further, in the passage hole forming step, since the passage hole is formed from the valve seat portion side through the valve seat portion and the concave portion, the occurrence of burrs on the valve seat portion side can be suppressed.

  Further, according to the on-off valve manufacturing method of the sixth aspect of the present invention, the taper-shaped re-indentation is applied to the periphery of the valve seat portion of the valve seat member by press working after the passage hole forming step. The strength of the surface of the seat can be increased, and the surface can be flattened to eliminate burrs and improve the sealing performance.

  In the on-off valve manufacturing method according to claim 7 of the present invention, in the valve seat / recess forming step, the valve seat forming mold is placed on the one surface of the end wall of the valve seat member, Since the concave portion forming die simultaneously acts on the other surface of the end wall, the valve seat portion on one side of the end wall and the concave portion on the other surface side of the end wall can be formed simultaneously.

  According to the cap-shaped member insertion structure of claim 8 of the present invention, the other end of the peripheral side wall of the cap-shaped insertion member is inclined radially outward toward the end wall. Since the annular inclined surface is provided, the cap-shaped insertion member can be easily and reliably inserted and assembled on the inner peripheral side of the peripheral side wall of the outer member.

  According to the method for manufacturing the cap-shaped member insertion structure according to claim 9 of the present invention, the opening side peripheral wall portion of the peripheral side wall of the intermediate cap-shaped member formed in the intermediate cap-shaped member forming step is trimmed. After that, the opening side peripheral wall portion of the peripheral side wall of the intermediate cap-shaped member is molded so as to extend substantially linearly, so that press processing is used for the opening end of the peripheral side wall of the intermediate cap-shaped member. Thus, an annular inclined surface can be formed.

  Furthermore, according to the manufacturing method of the insertion structure of the cap-shaped insertion member according to claim 10 of the present invention, the peripheral side wall of the intermediate cap-shaped member is interposed between the intermediate cap-shaped member forming step and the intermediate cap-shaped member cutting step. Since the opening side peripheral wall portion molding step for forming the opening side peripheral wall portion of the cap-shaped member at a predetermined inclination angle is performed, the annular inclined surface of the opening end of the peripheral side wall of the cap-shaped member after the cap-shaped member molding finishing step is set at a predetermined inclination angle Can be finished.

Sectional drawing which shows 1st Embodiment of the electromagnetic on-off valve as an example of the on-off valve according to this invention. The partial expanded sectional view which shows a part of valve seat member of the electromagnetic on-off valve of FIG. The fragmentary sectional view which shows the state which processes the valve seat member of FIG. 2 in a cap shape, and forms an intermediate valve seat member. The fragmentary sectional view which shows the state which forms a valve seat part and a recessed part in the intermediate valve seat member of FIG. The fragmentary sectional view which shows the state which forms a passage hole in the intermediate valve seat member of FIG. FIG. 6 is a partial cross-sectional view illustrating a state where a re-indentation is applied to the intermediate valve seat member of FIG. 5. Sectional drawing which shows 2nd Embodiment of the electromagnetic on-off valve as an example of the on-off valve according to this invention. The fragmentary sectional view which shows the state which processes the valve seat member of the electromagnetic on-off valve of FIG. 7 in a cap shape, and forms a primary intermediate valve seat member. The fragmentary sectional view which shows the state which forms a shoulder part in the primary intermediate valve-seat member of FIG. The fragmentary sectional view which shows the state which shape | molds the step part in the primary intermediate valve seat member of FIG. The fragmentary sectional view which shows the state which shape | molds the opening side surrounding wall part of the surrounding side wall in the primary intermediate valve seat member of FIG. The fragmentary sectional view which shows the state which performs the trimming process to the opening side surrounding wall part of the surrounding side wall in the primary intermediate valve seat member of FIG. FIG. 13 is a partial cross-sectional view illustrating a state in which a final forming process is performed on the opening-side peripheral wall portion of the peripheral side wall of the primary intermediate valve seat member in FIG. 12.

  Hereinafter, a first embodiment of an electromagnetic on-off valve (and a method for manufacturing the same) as an example of an on-off valve according to the present invention will be described with reference to the accompanying drawings. In FIG. 1, the illustrated electromagnetic on-off valve 2 includes an on-off valve body 4, and most of the on-off valve body 4 is accommodated in a valve housing 6. An electromagnetic coil 8 is disposed on the rear end side (one end side) of the on-off valve body 4. The electromagnetic coil 8 includes a cylindrical sleeve-shaped holding member 10 and a coil 12 wound around the holding member 10, and a terminal portion 14 electrically connected to the coil 12 penetrates the valve housing 6 and is externally provided. It extends to.

  A core 16 and a valve member 18 are disposed on the radially inner side of the on-off valve body 4. The core 16 has a large-diameter end wall portion 20 and a small-diameter insertion portion 22 extending from the large-diameter end wall portion 20. The small-diameter insertion portion 22 is inserted into the electromagnetic coil 8 in the radial direction and inserted. The core 16 is attached to the valve housing 6 by press-fitting the large-diameter end wall portion 20 into the rear end opening (one end side opening) of the valve housing 6.

  A cylindrical cylinder 24 is disposed on the inner peripheral surface on the front end side of the on-off valve body 4. The cylinder 24 is made of a nonmagnetic material, and the valve member 18 is movably disposed inside the cylinder 24 in the radial direction. The valve member 18 includes a substantially cylindrical valve main body 26, and a valve portion 28 is provided at the tip of the valve main body 26. In this embodiment, a ball-shaped member is fixed to the distal end portion of the valve body 28, and this ball-shaped member functions as the valve portion 28.

  A valve seat member 30 is disposed opposite to the valve member 18, and the valve seat member 30 is attached between the valve housing 6 and the other end of the on-off valve body 4. Referring also to FIG. 2, the valve seat member 30 includes a cylindrical peripheral side wall 32 and an end wall 34 provided at one end of the peripheral side wall 32, and one surface (valve portion) of the end wall 34. The valve seat portion 36 is provided on the surface facing 26. In this embodiment, the other end portion of the valve housing 6 is somewhat enlarged radially outward, and an annular space (between the valve housing 6 and the on-off valve body 4 is formed by expanding the diameter in this way. The opening side end portion 38 of the peripheral side wall 32 of the valve seat member 30 is inserted into the space), and the valve seat member 30 is attached to the other end portion of the on-off valve body 4 by being inserted in this way.

  A passage hole 40 is provided through the valve seat portion 36 of the valve seat member 30, and when the valve portion 26 of the valve member 18 is seated on the valve seat portion 36 of the valve seat member 30, the valve portion 26 The passage hole 40 of the valve seat portion 36 is closed to block the fluid flow. A circular recess 42 is provided on the other surface of the end wall 34 of the valve seat member 36 (the surface opposite to the surface on which the valve seat portion 36 is provided) corresponding to the valve seat portion 36. Yes. A method for manufacturing such a valve seat member 32 will be described later.

  In this embodiment, an elastic biasing member 44 composed of, for example, a coil spring is interposed between the core 16 and the valve member 18. The valve main body 28 of the valve member 18 is provided with a housing recess 46 extending toward the valve portion 40, and one end side of the elastic biasing member 44 is in contact with the end surface of the core 16 (small diameter insertion portion 22). The end side is disposed so as to be in contact with the bottom surface of the accommodating recess 46 of the valve member 18, and this elastic biasing member 44 is elastic toward the valve seat member 30 (valve seat portion 36) with respect to the valve member 18 (valve portion 26). Biased.

  Further, a feed passage 48 is provided on the other end side (tip side) of the valve housing 6 and the on-off valve body 4, and this feed passage 48 is provided between the on-off valve body 4 and the valve seat member 30. It communicates with a defined reservoir space 50. Accordingly, a fluid (for example, a liquid such as oil) from the supply flow path 48 is accumulated in the reservoir space 50 and flows from the reservoir space 50 through the passage hole 40 of the valve seat member 30.

  In this electromagnetic on-off valve 2, when no drive current is supplied to the electromagnetic coil 8, the valve member 18 is moved in the direction approaching the valve seat member 30 by the action of the elastic biasing member 44. As shown, the valve portion 28 is seated on the valve seat portion 36 of the valve seat member 30, whereby the passage hole 40 of the valve seat member 30 is closed, and no fluid flows through the passage hole 40. Further, when a drive current is supplied to the electromagnetic coil 8, the valve member 18 is magnetically attracted to the core 16 and is moved away from the valve seat member 30 against the action of the elastic biasing member 44. . Thus, the valve portion 28 of the valve member 18 is separated from the valve seat portion 36 of the valve seat member 30, thereby opening the passage hole 40 of the valve seat member 30, and allowing fluid flow through the passage hole 40. Is done.

  Next, a method for manufacturing the valve seat member 30 of the electromagnetic on-off valve 2 described above will be described mainly with reference to FIGS. 3 to 6 together with FIG. In order to manufacture the valve seat member 30, an intermediate valve seat member 62 having an end wall 34 and a peripheral side wall 32 by subjecting a disk-shaped blank member (not shown) to a drawing process (for example, a pressing drawing process). Form (intermediate valve seat member forming step). As shown in FIG. 3, a stationary mold 62 is attached to a bolster (not shown) of the press apparatus, and a movable mold 64 is attached to a slide (not shown) of the press apparatus. The stationary mold 62 includes a lower mold body 68 provided with a circular opening 66, and a lower mold member 70 disposed corresponding to the circular opening 66 of the lower mold body 68. A machining space is defined by the mold body 68 and the lower mold member 70, and the movable mold 64 is inserted in the machining space in a direction approaching and separating from the stationary mold 62 (that is, the vertical direction). It is reciprocated.

  When the movable mold 64 moves downward, the tip portion thereof is inserted into the machining space of the stationary die 62, and the tip portion of the movable die 64 acts on a blank member (not shown) by this movement, and the end wall. An intermediate valve seat member 72 having 34 and a peripheral side wall 32 is formed. When the length of the peripheral side wall of the intermediate valve seat member 72 becomes long (in other words, when the blank member is squeezed deeply), the above-described drawing process is repeated a plurality of times (for example, about 3 to 5 times). .

  After the intermediate valve seat member 72 is thus formed, the valve seat portion 36 and the recess 42 are formed in the end wall 34 of the intermediate valve seat member 72 (valve seat portion / recess formation step). Referring to FIG. 4, a stationary mold 74 attached to a bolster (not shown) corresponds to a lower mold body 78 provided with a circular opening 76 and a circular opening 76 of the lower mold body 78. The lower mold member 80 (functioning as a concave portion forming mold) disposed in this manner is provided. In this embodiment, a circular projection 82 corresponding to the shape of the concave portion 42 is formed on the upper surface of the lower mold member 80. Are provided integrally. A movable mold 84 (functioning as a valve seat portion forming mold) attached to a slide (not shown) is moved up and down in a direction approaching and separating from the stationary mold 74. On the lower surface of the movable mold 84, an annular taper protrusion 86 that is tapered toward the tip is provided.

  When the movable mold 84 moves downward, the tip portion thereof is inserted into the machining space of the stationary mold 74 (the machining space defined by the lower mold body 80 and the lower mold member 80), and the movable mold is moved by the movement. The tip end portion (annular tapered protrusion 86) of the mold 84 acts on one surface of the end wall 34 of the intermediate valve seat member 72, and the valve seat portion 36 composed of an annular tapered concave portion is formed on one surface of the end wall 34. In addition, the distal end portion (circular protrusion 82) of the lower mold member 80 acts on the other surface of the end wall 34 of the intermediate valve seat member 72, and the circular recess 42 is formed on the other surface of the end wall 34. It is formed.

  In this embodiment, the region of the valve seat portion 36 (annular tapered concave portion) provided on one side of the end wall 34 is substantially the same as or somewhat smaller than the region of the circular concave portion 42 provided on the other side. Therefore, the strength of the region of the valve seat portion 36 can be partially increased by plastic deformation at the time of pressing, thereby ensuring stable sealing performance over a long period of time. In this embodiment, the valve seat 36 on one side of the end wall 34 and the recess 42 on the other side are formed at the same time. However, it is not necessary to form them at the same time. After forming the valve seat portion 36 (or the concave portion 42) on the side (or the other surface side), the concave portion 42 (or the valve seat portion 36) may be formed on the other surface side (or one surface side).

  Thus, after forming the valve seat part 36 in the end wall 34 of the intermediate valve seat member 72, the passage hole 40 is formed in the valve seat part 36 of this end wall 34 (passage hole formation process). Referring to FIG. 5, a support die 94 having a through hole 92 is attached to a bolster (not shown). A punch 96 is attached to the slide (not shown), and a press holding member 98 is attached via a spring means (not shown). The distal end pressing wall 100 of the pressing and holding member 98 is provided with an insertion opening 102 through which the distal end portion of the punch 96 is inserted, and the distal end portion of the punch 96 is inserted through the insertion opening 102 of the pressing and holding member 98. The front end portion of the press holding member 98 acts on one side of the end wall 34 of the intermediate valve seat member 72 and presses and holds it between the support die 94. The punch 96 and the press holding member 98 are moved up and down in a direction approaching and separating from the support die 94.

  When the punch 96 and the pressure holding member 98 move downward, first, the tip end portion of the pressure holding member 98 acts on one surface (the surface on which the valve seat portion 36 is provided) of the end wall 34 of the intermediate valve seat member 72, The valve seat member 72 is pressed and held between the support die 94 and the press holding member 98. When the punch 96 is further moved downward, the tip end portion of the punch 96 acts on the end wall 34 of the intermediate valve seat member 72 through the insertion opening 102 of the press holding member 98 and penetrates from the valve seat portion 36 side to the concave portion 42 side to be supported. Inserted into the through-hole 92 of the die 94, the passage hole 40 is thus formed through the valve seat portion 36 on one side and the recess 42 on the other side. At this time, since the punch 96 acts from the valve seat portion 36 side, the occurrence of burrs on the valve seat portion 36 side can be suppressed.

  Thereafter, a re-indentation is applied to the valve seat portion 36 of the end wall 34 of the intermediate valve seat member 72 (re-indentation forming step). Referring to FIG. 6, a stationary mold 112 attached to a bolster (not shown) corresponds to a lower mold body 116 provided with a circular opening 114 and a circular opening 114 of the lower mold body 116. The end wall 34 of the intermediate valve seat member 72 is placed on the upper surface of the lower mold member 118. In this mounted state, the lower mold member 118 A circular support protrusion 121 provided on the upper surface is positioned and supported in the recess 42 of the end wall 34 of the intermediate valve seat member 72. A movable mold 120 (functioning as a re-indentation mold) is attached to the slide (not shown) via spring means (not shown). A taper-shaped re-indentation protrusion 122 corresponding to the shape of the valve seat portion 36 of the intermediate valve seat member 72 is integrally provided on the front end surface of the movable die 120, and approaches and separates from the stationary die 112. Moved up and down in the direction.

  When the movable mold 120 moves downward, its tip is inserted into the machining space of the stationary mold 112 (the machining space defined by the lower mold body 116 and the lower mold member 118), and the movable mold is moved by such movement. The tip portion (re-indentation protrusion 122) of the mold 120 acts on the valve seat portion 36 (specifically, the peripheral portion of the passage hole 40) of the end wall 34 of the intermediate valve seat member 72 with a predetermined pressure. Re-indentation is applied to the valve seat portion 36 of the end wall 34, and thus the valve seat member 30 is manufactured. When the indentation is formed in the valve seat portion 36, the seating surface of the valve seat portion 36 of the valve seat member 30 is flattened to eliminate burrs, and the reindentation causes the seating surface to be somewhat plastically deformed and strengthened by work hardening. Can be further increased, and the seal on the seating surface can be further stabilized.

  Next, a second embodiment of the electromagnetic on-off valve will be described with reference to FIGS. In the second embodiment, substantially the same members as those in the first embodiment described above are denoted by the same reference numerals, and the description thereof is omitted.

  In FIG. 7, in the electromagnetic on-off valve 2A of the second embodiment, the valve seat member is improved and the following insertion structure is adopted. In FIG. 7, the core 16 is attached to one end portion of the valve housing 6A as described above, and a diameter-expanded end portion 132 that is expanded radially outward is provided at the other end portion. An annular space is formed between the diameter end portion 132 and the end portion of the on-off valve body 4A, but the valve seat member 30A can be easily and reliably inserted into the annular space. An annular inclined surface 134 is provided at the opening end of the peripheral side wall 32A of 30A. That is, the valve seat member 30A has a peripheral side wall 32A and an end wall 34 provided at one end of the peripheral side wall 32A, and faces the other end (that is, the open end) of the peripheral side wall 32A radially outward. An annular inclined surface 134 that is inclined toward the end wall 34 is provided. By configuring in this way, the other end portion of the peripheral side wall 32A is tapered, and when the valve seat member 30A is mounted, the other end portion of the peripheral side wall 32A is the enlarged diameter end portion of the valve housing 6A. 132 and the opening / closing valve body 4A so as to bite into the annular space between the ends of the valve body 4A, whereby the peripheral side wall 32A of the valve seat member 30A can be inserted and attached as required.

  Further, a shoulder portion 135 is provided on the peripheral side wall 32A of the valve seat member 30A so that positioning when the valve seat member 30A is mounted is accurate, and one end side of the peripheral side wall 32A is formed with the shoulder portion 135 as a boundary The (end wall 34 side) is a small outer diameter portion 136 having a small outer diameter, and the other end side is a large outer diameter portion 138 having a large outer diameter. The end of the large outer diameter portion 138 is the valve housing. It is mounted in an annular space between 6A and the on-off valve body 4A. In this connection, an annular notch 140 is provided on the outer periphery of the end of the on-off valve body 4A, and the shoulder 135 of the valve seat member 30A is connected to the annular notch 140 of the on-off valve body 4A. It is comprised so that it may contact | abut to an end surface, and positioning at the time of mounting | wearing of valve seat member 30A is performed by contacting in this way. Other configurations in the second embodiment are substantially the same as those in the first embodiment described above.

  Next, a manufacturing method of the valve seat member 30A described above will be described with reference to FIGS. 8 to 13 together with FIG. In order to manufacture the valve seat member 30A, a primary intermediate valve seat member 142 having an end wall 34 and a peripheral side wall 32A by subjecting a disk-shaped blank member (not shown) to drawing (for example, pressing drawing). (Primary intermediate valve seat member forming step). As shown in FIG. 8, a stationary mold 144 is attached to a bolster (not shown) of the press apparatus, and a movable mold 146 is attached to a slide (not shown) of the press apparatus. The stationary mold 144 includes a first lower mold member 148 provided with a first lower circular opening 146, a second lower mold member 152 provided with a second lower circular opening 150, and a third lower circular opening 154. And a third lower circular member 156 of the third lower metallic member 156 through the first and second lower circular openings 146, 150 of the first and second lower metallic members 148, 152. A fourth lower mold member 158 extending into the opening 152, and a lower lower portion inclined upward in the radial direction near the upper edge of the third lower circular opening 154 of the third lower mold member 156. An annular inclined surface 160 is provided. In addition, the movable mold 146 includes a first upper mold member 164 provided with a first upper circular opening 162, and a second upper part protruding below the first upper mold member 164 through the first upper circular opening 162. The first upper mold member 164 has a diameter in the vicinity of the lower edge portion of the first upper mold member 164 corresponding to the lower annular inclined surface 160 on the third lower mold member 156 side. An upper annular inclined surface 168 inclined upward in the direction outward is provided, and the movable mold 146 has a processing space (third and fourth lower mold members 156) at the tip of the second upper mold member 166. , 158 is reciprocated in the direction approaching and separating from the stationary mold 144 so as to be inserted into the processing space defined by 158.

  When the movable mold 146 moves downward, its tip is inserted into the processing space of the stationary mold 144, and the tip of the second upper mold member 166 acts on a blank member (not shown) by such movement. A primary intermediate valve seat member 142 having an end wall 34 and a peripheral side wall 32A is formed. At this time, the upper annular inclined surface 168 of the first upper mold member 164 acts on the inner peripheral surface of the peripheral side wall 32A of the primary intermediate valve member 142 and spreads outward in the radial direction, so that the first upper mold member 164 The upper annular inclined surface 168 and the lower annular inclined surface 160 of the third lower mold member 156 are formed so that the opening-side peripheral wall portion 170 of the peripheral side wall 32A extends upward in the radial direction. Therefore, at the end of the primary intermediate valve seat member forming step, the base side of the peripheral side wall 32A extends from the end wall 34 at a substantially right angle, and the opening side peripheral wall 170 continuing from the base side is radially outward. Inclined and extended upward (that is, in a direction away from the end wall 34). In addition, when the length of the peripheral side wall 32A of the primary intermediate valve seat member 142 becomes long, the drawing process is repeated a plurality of times (for example, about 3 to 5 times).

  After forming the primary intermediate valve seat member 142 in this way, the shoulder portion 135 is formed on the peripheral side wall 32A of the primary intermediate valve seat member 142 (shoulder portion forming step). Referring to FIG. 9, a stationary mold 172 attached to a bolster (not shown) is provided with a first lower mold member 176 provided with a first lower circular opening 174, and a second lower circular opening 178. The second lower mold member 180, the third lower mold member 184 provided with the third lower circular opening 182, and the first and second lower circular members of the first and second lower mold members 176, 180. And a fourth lower mold member 186 extending into the third lower circular opening 182 of the third lower mold member 184 through the openings 174 and 178. Further, the movable mold 188 includes an upper mold member 190, and a step portion 192 is provided at the distal end portion of the upper mold member 190, and the distal end side of the step portion 192 has an outer diameter larger than that of the base portion side. It is getting smaller. In this movable mold 188, the tip of the upper mold member 190 (the portion on the tip side from the step 192 leaving a space corresponding to the thickness of the peripheral side wall 32A of the primary intermediate valve seat member 142) is a processing space (third And reciprocatingly moved in a direction approaching and separating from the stationary mold 172 so as to be inserted into a machining space defined by the fourth lower mold members 184 and 186.

  When the movable mold 188 moves downward, the tip of the upper mold member 190 is inserted into the machining space of the stationary mold 172, and the stepped portion 192 is an opening of the peripheral side wall 32A of the primary intermediate valve seat member 142. It acts on the base of the side peripheral wall 170, and the shoulder 135 (radially outward in the radial direction) is formed by the third lower mold member 184 of the stationary mold 172 and the step 192 of the upper mold member 190. A portion extending to the top).

  After the shoulder 135 is formed on the peripheral side wall 32A of the primary intermediate valve seat member 142 in this way, the shoulder 135 is molded (shoulder molding step). Referring to FIG. 10, in this shoulder molding process, a mold that is substantially the same as that in the above-described shoulder forming process is used, and stationary mold 202 is a first lower mold provided with a first lower circular opening 204. A mold member 206, a second lower mold member 210 provided with a second lower circular opening 208, a third lower mold member 214 provided with a third lower circular opening 212, and first and second lower molds. And a fourth lower mold member 216 extending into the third lower circular opening 212 of the third lower mold member 214 through the first and second lower circular openings 204, 208 of the mold members 206, 210. In addition, the movable mold 218 includes an upper mold member 220, and a step portion 222 is provided at the distal end portion of the upper mold member 220. The distal end side of the step portion 222 has an outer diameter larger than that of the base portion side. It is getting smaller. In the movable mold 218, the tip end portion of the upper mold member 220 (the portion on the tip end side from the step portion 222 leaving an interval corresponding to the thickness of the peripheral side wall 32A of the primary intermediate valve seat member 142) is inserted into the machining space. As described above, it is reciprocated in the direction of approaching and separating from the stationary mold 202.

  When the movable mold 218 moves downward, the tip of the upper mold member 220 is inserted into the machining space of the stationary mold 202, and the stepped portion 222 is a shoulder of the peripheral side wall 32A of the primary intermediate valve seat member 142. Acting on the portion 135, the upper surface of the third lower mold member 214 of the stationary mold 202 and the step surface of the step portion 222 of the upper mold member 220 are formed so that the inner surface and the outer surface of the shoulder portion 135 are flat. At the same time, it is shaped so as to extend radially outward from the base side (the portion extending from the end wall 34) of the peripheral side wall 32A at a substantially right angle. When the shoulder portion 135 is not provided on the peripheral side wall 32A of the primary intermediate valve seat member 142, the above-described shoulder portion forming step and shoulder portion forming step can be omitted.

  After the shoulder portion 135 of the primary intermediate valve seat member 142 is thus formed, the opening side peripheral wall portion 170 is formed (opening side peripheral wall portion forming step). Referring to FIG. 11, stationary mold 232 includes a first lower mold member 236 provided with a first lower circular opening 234, and a second lower mold member 240 provided with a second lower circular opening 238. The third lower mold member 244 provided with the third lower circular opening 242 and the third lower mold member through the first and second lower circular openings 234 and 238 of the first and second lower mold members 236 and 240. A fourth lower mold member 246 extending into the third lower circular opening 242 of the member 244, and radially outwardly near the upper edge of the third lower circular opening 242 of the third lower mold member 244. A lower annular inclined surface 248 that is inclined upward is provided. Further, the movable mold 250 includes an upper mold member 252, and a small outer diameter portion 254 is provided at the tip of the upper mold member 252. A taper portion 256 whose outer diameter gradually decreases toward the small outer diameter portion 254 is provided between the base side of the upper mold member 252 and the small outer diameter portion 254. The taper portion 256 is a third lower portion. An upper annular inclined surface 258 corresponding to the lower annular inclined surface 248 on the mold member 244 side is defined, and the upper annular inclined surface 258 extends while being inclined upward in the radial direction. In the movable mold 250, the tip end portion (small outer diameter portion 254 and taper portion 256) of the upper mold member 252 is inserted into the machining space, and the lower annular inclined surface 248 of the third lower mold member 244 and the upper mold are inserted. The mold member 252 is reciprocated in the direction approaching and separating from the stationary mold 232 so that the distance from the upper annular inclined surface 258 of the mold member 252 is a predetermined distance.

  When the movable mold 250 moves downward, the small outer diameter portion 254 of the upper mold member 252 acts on the end wall 34 of the primary intermediate valve seat member 142, and the taper portion 256 of the upper mold member 252 opens on the opening side thereof. The opening-side peripheral wall portion 170 acts on the peripheral wall portion 170 and radially outwards at a predetermined angle by the lower annular inclined surface 248 of the third lower mold member 244 and the upper annular inclined surface 258 of the upper mold member 252. Shaped to extend.

  The predetermined angle formed by the opening side peripheral wall forming step is an inclination angle of the annular inclined surface 134 (see FIG. 7) at the open end of the peripheral side wall 32A of the manufactured valve seat member 30A, as will be understood from the following description. The angle of inclination of the annular inclined surface 134 of the peripheral side wall 32A can be adjusted (for example, increased) by changing (for example, increasing) the predetermined angle.

  After forming the opening side peripheral wall 170 of the primary intermediate valve seat member 142 in this manner, the opening side peripheral wall 170 is trimmed and cut into a predetermined size (primary intermediate valve seat member cutting step). Referring to FIG. 12, stationary mold 262 includes a first lower mold member 266 provided with a first lower circular opening 264, and a second lower mold member 270 provided with a second lower circular opening 268. The third lower mold member 274 provided with the third lower circular opening 272, and the third lower mold member 266 through the first lower circular openings 264 and 268 of the second lower mold member 266 and 270. And a support extrusion mold member 276 extending into the third lower circular opening 272 of the member 274. The support extrusion mold member 276 includes an inner support extrusion member 278 that supports the end wall 34 of the primary intermediate valve seat member 142, an outer support extrusion member 280 that supports the shoulder portion 135 of the peripheral side wall 32A and the opening side peripheral wall portion 170. The inner push member 278 and the outer push member 280 are attached via the inner spring member 282 and the outer spring member 284. The movable mold 286 includes an upper mold member 288, and the outer diameter of the upper mold member 288 is substantially equal to the 0 inner diameter of the third lower circular opening 272 of the third lower mold member 274. By the upper mold member 288 and the third lower mold member 274, the opening side peripheral wall portion 170 of the primary intermediate valve seat member 142 is cut as will be described later. A small outer diameter portion 290 that acts on the end wall 34 of the primary intermediate valve seat member 142 is provided at the distal end portion of the upper mold member 288.

  When the movable mold 286 moves downward, the small outer diameter portion 290 of the upper mold member 288 acts on the end wall 34 of the primary intermediate valve seat member 142, and with this lowering, through the primary intermediate valve seat member 142. The support extrusion die 276 is moved downward against the action of the inner spring member 282 and the outer spring member 284. Then, when further moved downward, the upper mold member 288 (specifically, the outer peripheral edge thereof) acts on the opening side peripheral wall 170 of the primary intermediate valve seat member 142, and the third lower mold member 274 and the upper mold member 274 are moved upward. The opening side peripheral wall 170 is cut into a predetermined size by the shearing action of the mold member 288.

  After the opening side peripheral wall section cutting step, the opening side peripheral wall portion 170 extending in an inclined manner is formed so as to extend from the shoulder portion 135 substantially at a right angle (opening side peripheral wall portion forming step). Referring to FIG. 13, stationary mold 302 includes a first lower mold member 306 provided with a first lower circular opening 304, and a second lower mold member 310 provided with a second lower circular opening 308. A third lower mold member 314 provided with a third lower circular opening 312, and a fourth mold extending through the first and second lower circular openings 304, 308 of the first and second lower mold members 306, 310. And the inner diameter of the lower part of the third lower circular opening 312 in the third lower mold member 314 is set to the outer diameter of the small outer diameter part 136 on the distal end side of the peripheral side wall 32A of the manufactured valve seat member 30A. Correspondingly, the inner diameter of the upper portion of the third lower circular opening 312 corresponds to the outer diameter of the large outer diameter portion 138 of the peripheral side wall 32A. In addition, the upper end portion of the third lower circular opening 312 of the third lower mold member 314 is curved outwardly in the radial direction, and the opening-side peripheral wall portion extending in an inclined manner is formed in such a shape. It can be molded as described later without large stress acting on 170. The movable mold 320 includes an upper mold member 322, and a small outer diameter portion 324 is provided at the tip of the upper mold member 322, and the main body portion 326 and the small outer diameter portion 324 of the upper mold member 322 are provided. Is provided with a step portion 328. The small outer diameter portion 324 of the upper mold member 322 is inserted to the lower portion of the third lower circular opening 312 of the third lower mold member 314, and the main body portion 326 is inserted to the upper portion of the third lower circular opening 312. Thus, the finish molding of the primary intermediate valve seat member 142 is performed.

  When the movable mold 320 moves downward, the small outer diameter portion 324 of the upper mold member 322 acts on the end wall 34 of the primary intermediate valve seat member 142, and the stepped portion 328 thereof is the shoulder of the primary intermediate valve seat member 142. The first intermediate valve seat member 142 is pushed into the third lower circular opening 312 of the third lower mold member 314 and the third lower circular opening of the third lower mold member 314 is moved. The primary intermediate valve seat member 142 is finished by the inner peripheral surface of 312 and the outer peripheral surface of the upper mold member 322. At this time, the opening-side peripheral wall 170 extending obliquely outward in the radial direction from the shoulder 135 of the primary intermediate valve seat member 142 is substantially perpendicular to the outer peripheral end of the shoulder 135 as shown in FIG. In this way, the cut surface of the opening-side peripheral wall portion 170 is finished to be an annular inclined surface 134 that is inclined outward in the radial direction toward the end wall 34.

  In this way, the intermediate valve seat member 72A is manufactured from the primary intermediate valve seat member 142, and the intermediate valve seat member 72A thus manufactured becomes the secondary intermediate valve seat member, and the end of the intermediate valve seat member 72A A valve seat portion, a passage hole, and a concave portion are formed in the wall 34 by pressing as in the first embodiment. In addition, although this technical matter was applied and demonstrated to manufacture of the valve seat member of an on-off valve, other members other than a valve seat member, for example, the insertion structure of the cap-shaped member inserted inside the surrounding side wall of an outer member Can be widely applied to.

  As mentioned above, although the embodiment of the on-off valve and the manufacturing method thereof according to the present invention and the embodiment of the insertion structure of the cap-shaped member and the manufacturing method thereof have been described, the present invention is not limited to these embodiments, and Various changes or modifications can be made without departing from the scope.

2, 2A Solenoid open / close valve 4, 4A Open / close valve body 8 Electromagnetic coil 16 Core 18 Valve member 28 Valve part 30, 30A Valve seat member 32, 32A Peripheral side wall 34 End wall 36 Valve seat part 40 Passage hole 42 Recessed part

Claims (10)

A valve seat member provided with a valve seat portion, and a valve member mounted so as to be movable in a direction approaching and separating from the valve seat portion of the valve seat member,
The valve seat member has a peripheral side wall and an end wall provided at one end of the peripheral side wall, the valve seat part is provided in the end wall, and a passage hole penetrates the valve seat part. Provided,
The valve member has a valve body that is mounted so as to be movable in the direction of approaching and separating from the valve seat portion of the valve seat member, and a valve portion is provided at one end of the valve body. The valve portion is configured to be seated on the valve seat portion of the valve seat member and close the passage hole,
The valve seat portion of the valve seat member is provided on one side of the end wall, and the other surface of the end wall of the valve seat member is provided with a recess corresponding to the valve seat portion, and the passage hole Is provided through the valve seat and the recess.   2. The on-off valve according to claim 1, wherein the valve seat portion of the valve seat member is provided with a tapered re-indentation.   The opening and closing according to claim 1 or 2, wherein an annular inclined surface is provided at an opening end of the peripheral side wall of the valve seat member so as to be inclined radially outward toward the end wall. valve.   An electromagnetic coil for generating a magnetic field; a core on which a magnetic field from the electromagnetic coil acts; and a cylinder formed of a nonmagnetic material, wherein the valve body of the valve member is radially inward of the cylinder The elastic biasing member is interposed between the core and the valve body, and the elastic biasing member elastically moves the valve member toward the valve seat portion of the valve seat member. The on-off valve according to claim 1, wherein the on-off valve is biased. A valve seat member having a valve seat portion and a passage hole, and a valve member mounted so as to be movable toward and away from the valve seat portion of the valve seat member. In the method of manufacturing an on-off valve having a side wall and an end wall provided at one end of the peripheral side wall, the valve seat portion and the passage hole are provided in the end wall.
A valve seat portion / recess forming step for forming the valve seat portion on one side of the end wall of the valve seat member by pressing and forming a recess on the other surface of the end wall; And a passage hole forming step of forming a passage hole from the valve seat portion side through the valve seat portion and the concave portion.   After the passage hole forming step, a re-indentation step of performing a taper-shaped re-indentation by press working around the passage hole in the valve seat portion of the valve seat member is performed, and in the re-indentation forming step, 6. The on-off valve manufacturing method according to claim 5, wherein a re-indentation die is applied to the valve seat portion by applying a re-indentation die from the one side of the valve seat portion with a predetermined pressure.   In the valve seat / recess forming step, the valve seat forming die acts on the one surface of the end wall of the valve seat member, and the recess forming die acts on the other surface of the end wall. The on-off valve manufacturing method according to claim 5 or 6, wherein the valve seat portion on the one side of the end wall and the concave portion on the other side of the end wall are formed simultaneously. . In the insertion structure of the cap-shaped insertion member that inserts the cap-shaped insertion member on the inner peripheral side of the peripheral side wall of the outer member
The cap-shaped insertion member has a peripheral side wall that is inserted into the inner peripheral side of the peripheral side wall of the outer member, and an end wall that is provided at one end of the peripheral side wall. An insertion structure for a cap-shaped member, characterized in that an annular inclined surface is provided at the other end of the side wall, which is inclined toward the end wall toward the outside in the radial direction. In the manufacturing method of the insertion structure of the cap-shaped insertion member that inserts the cap-shaped insertion member on the inner peripheral side of the peripheral side wall of the outer member,
An intermediate cap-shaped member having a disk-like member drawn and having an end wall and a peripheral side wall extending from the end wall, and an opening-side peripheral wall portion of the peripheral side wall extending radially outward toward the opening end side Forming an intermediate cap-shaped member, cutting the intermediate cap-shaped member into a predetermined size by trimming the opening-side peripheral wall portion of the peripheral side wall of the intermediate cap-shaped member, and the intermediate cap A cap-shaped member forming and finishing step in which the opening-side peripheral wall portion of the peripheral side wall of the intermediate cap-shaped member is shaped so as to extend substantially linearly and finished into a cap-shaped member after the step of cutting the shaped member And a manufacturing method of an insertion structure of a cap-shaped insertion member. An opening-side peripheral wall portion forming step for forming the opening-side peripheral wall portion of the peripheral side wall of the intermediate cap-shaped member at a predetermined inclination angle between the intermediate cap-shaped member forming step and the intermediate cap-shaped member cutting step. The method for manufacturing an insertion structure for a cap-shaped insertion member according to claim 9, wherein the method is performed.

Images