JP5249190B2 - Solenoid valve and method for fixing main valve part and solenoid part in solenoid valve - Google Patents

Description

  The present invention relates to an electromagnetic valve in which a main valve portion and a solenoid portion are fixed to each other by a fixing member, and a method for fixing the main valve portion and the solenoid portion in the electromagnetic valve.

  In general, a solenoid valve is composed of a main valve portion and a solenoid portion. For example, Patent Document 1 discloses an electromagnetic valve in which a main valve portion and a solenoid portion are fixed to each other by a fixing member and integrally connected. The electromagnetic valve of Patent Document 1 is composed of a main valve part assembly (main valve part), a solenoid assembly (solenoid part), and a substantially U-shaped fixing fitting (fixing member) that connects them. .

  The main valve part assembly includes a casing made of a nonmagnetic material, and a valve member (valve element) is accommodated in the casing. The valve member is provided so as to be able to contact and separate with respect to a valve seat provided inside the casing, and the flow path can be switched by contacting and separating the valve member with respect to the valve seat. The solenoid assembly includes a movable iron core that opens and closes the valve member, a bobbin around which the coil is wound, a magnetic frame that surrounds the coil, a fixed iron core that is magnetically coupled to the magnetic frame by contacting the magnetic frame, A return spring that urges the movable iron core in a direction away from the fixed iron core.

  The solenoid assembly is formed with a pair of hooks. The casing of the main valve part assembly is formed with a hook insertion hole into which a hook can be fitted and a metal fitting insertion hole for inserting a fixing metal fitting. Further, the fixing bracket is provided with an engaging portion that can be engaged with the hook at the tips of the two side plate portions. Then, with the hook inserted into the hook insertion hole, the fixing fitting is inserted into the fitting insertion hole, and the engaging portion and the hook are engaged, so that the main valve assembly and the solenoid assembly are fixed to the fixing fitting. It is fixed by and is connected integrally.

JP 2001-116162 A

  However, in the electromagnetic valve of Patent Document 1, a pair of hooks formed in the solenoid assembly, a hook insertion hole and a metal fitting insertion hole formed in the casing of the main valve part assembly, and an engagement part formed in the fixing metal, respectively. Are provided at predetermined locations. For this reason, the place which fixes a main valve part assembly and a solenoid assembly with a fixing metal fitting is decided beforehand, and the position of a movable iron core to a fixed iron core will necessarily be decided in connection with it. Therefore, when the main valve part assembly and the solenoid assembly are fixed by the fixing bracket, the iron core stroke length when the movable iron core comes in contact with and separates from the fixed iron core is uniquely determined. Therefore, in the electromagnetic valve of Patent Document 1, when the iron core stroke length becomes too larger than the valve stroke length when the valve member contacts and separates from the valve seat, the movable iron core is attracted to the fixed iron core side. Therefore, the magnetic force for use is consumed wastefully. Further, when the iron core stroke length becomes too smaller than the valve stroke length, the valve member cannot be switched due to the contact and separation of the valve seat.

  The present invention has been made paying attention to such problems existing in the prior art, and its purpose is to provide an iron core stroke of a movable iron core when the main valve portion and the solenoid portion are fixed by a fixing member. An electromagnetic valve that can be fixed while adjusting the length, and a method for fixing a main valve portion and a solenoid portion in the electromagnetic valve.

In order to achieve the above object, according to the first aspect of the present invention, a valve body is accommodated in a valve chamber formed in a body, and the valve body is brought into contact with and separated from a valve seat provided in the valve chamber. A solenoid part having a main valve part capable of switching the flow path, a fixed iron core for driving the valve element in a direction to contact and separate from the valve seat, and a movable iron core capable of coming into contact with and away from the fixed iron core Is a solenoid valve that is fixed by a fixing member, and a position that can be adjusted between the main valve part and the solenoid part in a direction in which the main valve part and the solenoid part are contacted and separated from each other. An adjustment means is provided, and the fixing member is integrated into one of the main valve part and the solenoid part, and the position of the main valve part and the solenoid part is adjusted by the position adjustment means And the other Member is fixed and the solenoid portion and the main valve part is connected is by the fixing member, the fixing member is integrated with the main valve portion while being formed from a metallic material, and the fixing member and the solenoid portion The gist is that the contact portions are joined together by welding .
In order to achieve the above object, the invention according to claim 2 is characterized in that the valve body is accommodated in a valve chamber formed in the body, and the valve body is brought into contact with and separated from the valve seat provided in the valve chamber. A solenoid part having a main valve part capable of switching the flow path, a fixed iron core for driving the valve element in a direction to contact and separate from the valve seat, and a movable iron core capable of coming into contact with and away from the fixed iron core Is a solenoid valve that is fixed by a fixing member, and a position that can be adjusted between the main valve part and the solenoid part in a direction in which the main valve part and the solenoid part are contacted and separated from each other. An adjustment means is provided, and the fixing member is integrated into one of the main valve part and the solenoid part, and the position of the main valve part and the solenoid part is adjusted by the position adjustment means And the other A member is connected, and the main valve portion and the solenoid portion are fixed by the fixing member. The fixing member is formed of a nonmagnetic material and is integrated with the main valve portion, and the fixing member is the solenoid. The gist of the present invention is that it is connected to a magnetic circuit forming member that forms a magnetic circuit by energizing the coil constituting the part and exciting the coil.

The invention according to claim 3 is the invention according to claim 1 or 2 , wherein the position adjusting means is an elastic member disposed between the main valve portion and the solenoid portion. The gist.
Invention according to claim 4, in the invention described in 請 Motomeko 2, wherein the fixing member is integrated with the main valve portion while being formed from a metallic material, and the fixing member and the solenoid unit, the The gist is that the contact portions are joined together by welding.

According to a fifth aspect of the present invention, in the first aspect of the present invention, the fixing member is formed of a nonmagnetic material and is integrated with the main valve portion, and the fixing member constitutes the solenoid portion. The gist is that the coil is connected to a magnetic circuit forming member that forms a magnetic circuit by energizing the coil and exciting the coil.

According to the sixth aspect of the present invention, the valve body is accommodated in the valve chamber formed in the body, and the flow path can be switched by the contact and separation of the valve body with respect to the valve seat provided in the valve chamber. A valve member, a fixed iron core for driving the valve body in a direction to move toward and away from the valve seat, and a solenoid portion having a movable iron core that can move toward and away from the fixed iron core are fixed by a fixing member. A method for fixing a main valve portion and a solenoid portion in an electromagnetic valve, wherein the position adjustment is performed between the main valve portion and the solenoid portion in a direction in which the main valve portion and the solenoid portion are contacted and separated from each other. Position adjusting means made of an elastic body is provided, and the fixing member is integrated into one of the main valve part and the solenoid part, and the main valve part and the solenoid part are integrated by the position adjusting means. And position In adjusted state by coupling the fixing member to the other and fixed by the fixing member and the solenoid portion and the main valve part, wherein the fixing member is integrated with the main valve portion while being formed from non-magnetic material The fixing member and a magnetic circuit forming member that forms a magnetic circuit by energizing the coil constituting the solenoid part and energizing the coil are brought into contact, and the contact parts are joined by welding. The gist.

  According to this invention, when the main valve portion and the solenoid portion are fixed by the fixing member, the main valve portion and the solenoid portion can be fixed while adjusting the iron core stroke length of the movable iron core.

The perspective view which shows the solenoid valve in this embodiment. The longitudinal cross-sectional view of a solenoid valve. The cross-sectional view of a solenoid valve. The exploded perspective view of a solenoid valve. The top view of a solenoid valve.

Hereinafter, an embodiment embodying the present invention will be described with reference to FIGS.
As shown in FIGS. 1 and 2, the electromagnetic valve 10 includes a main valve part 11 having a valve body 21 for switching the air flow path and a solenoid part 31 for driving the valve body 21 as a fixing member 51. Are fixed to each other.

First, the main valve part 11 will be described.
As shown in FIG. 4, the main valve portion 11 includes a long box-shaped body 12 made of a non-magnetic material (made of a synthetic resin material). Of the four side surfaces along the longitudinal direction of the body 12, a mounting recess 12 a is formed on one pair of opposing side surfaces so as to extend from one end to the other end in the longitudinal direction of the body 12. The mounting recess 12 a is used when the fixing member 51 is mounted on the body 12.

  As shown in FIG. 2, a through hole 12 b is formed in the body 12 from one end to the other end in the longitudinal direction. On one side of the body 12, a supply port 13, an output port 14, and a discharge port 15 are formed in this order from one end of the body 12 to the other end, and the ports 13 to 15 are formed in the through holes 12b. It is open toward. Positive pressure air is supplied to the supply port 13 from a positive pressure supply source (not shown), and the output port 14 is connected to a pneumatic device (not shown) such as an air cylinder. The exhaust port 15 is connected to an exhaust pipe (not shown).

  One end of the through hole 12b is sealed by attaching a cylindrical retainer 17 with a bottom. The retainer 17 includes a bottom portion 17a that seals one end of the through hole 12b, and an extending portion 17b that extends in a cylindrical shape from the peripheral edge of the bottom portion 17a. The extending portion 17b is provided so that the tip thereof extends to the periphery of the opening in the output port 14 to the through hole 12b. In the extending portion 17b, a communication hole 17c is formed at a position overlapping the supply port 13. Therefore, the supply port 13 and the retainer 17 communicate with each other through the communication hole 17c.

  Further, a supply valve seat 18 is formed at the distal end of the extending portion 17b so as to surround the through hole 12b. Further, in the body 12, a discharge valve seat 19 is formed on an end surface surrounding the through hole 12 b between the output port 14 and the discharge port 15 so as to face the supply valve seat 18. A valve chamber 20 is defined in a space located between the supply valve seat 18 and the discharge valve seat 19 and on the output port 14. A valve body 21 is accommodated in the valve chamber 20, and the valve body 21 can be brought into contact with and separated from the supply valve seat 18 and the discharge valve seat 19. Further, the retainer 17 and the valve chamber 20 communicate with each other.

  The valve body 21 is fitted on the outer peripheral surface of a cylindrical rod 22 inserted through the through-hole 12 b and is provided integrally with the rod 22. A protruding portion 22 a that protrudes outward is formed on one end side of the rod 22, and one end side of the rod 22 is inserted into the retainer 17 so that the protruding portion 22 a is positioned in the retainer 17. A valve return spring 23 is interposed between the protrusion 22 a and the bottom 17 a of the retainer 17. The valve body 21 is biased in a direction away from the supply valve seat 18 by the spring force of the valve return spring 23.

  When the valve body 21 is moved away from the supply valve seat 18 by the spring force of the valve return spring 23, the valve body 21 is seated on the discharge valve seat 19, and the supply port 13 and the output port 14 are connected to the communication hole. 17c, the retainer 17 and the valve chamber 20 communicate with each other, and positive pressure air is supplied from the output port 14 to the pneumatic equipment. When the valve body 21 moves in a direction away from the discharge valve seat 19 against the spring force of the valve return spring 23, the valve body 21 is seated on the supply valve seat 18, and the output port 14, the discharge port 15, Are communicated via the valve chamber 20 and the through hole 12b, and the air discharged from the pneumatic device to the output port 14 is discharged from the discharge port 15.

  An annular mounting groove 25 is formed in the other end surface of the body 12, and an O-ring 26 made of an elastic body as a position adjusting means and an elastic member is mounted in the mounting groove 25. The O-ring 26 is attached to the attachment groove 25 so as to slightly protrude from the other end surface of the body 12. In other words, the depth of the mounting groove 25 is set to be smaller than the thickness of the O-ring 26. As shown in FIG. 4, two insertion holes 12 c are formed on one end surface of the body 12.

Next, the solenoid unit 31 will be described.
As shown in FIGS. 2 and 3, the solenoid unit 31 includes a bottomed rectangular tube-shaped bonnet 30 formed of a synthetic resin material, and a magnetic cover 32 formed of a magnetic material is provided in the bonnet 30. It is fitted inside. Inside the magnetic cover 32, a cylindrical bobbin 33 around which a plurality of coils 33a are wound is disposed. Inside the magnetic cover 32 and closer to the body 12 than the bobbin 33, a guide ring 34 that functions as a magnetic circuit forming member for forming a magnetic circuit is provided, and the guide ring 34 and the bobbin 33 are substantially A cylindrical movable iron core 35 is inserted.

  As shown in FIGS. 4 and 5, the guide ring 34 is formed in a square ring shape and is exposed from one end of the bonnet 30. The pair of opposed outer surfaces of the four outer surfaces of the guide ring 34 are partially covered by the magnetic cover 32, and the remaining pair of outer surfaces are not covered by the magnetic cover 32.

  As shown in FIGS. 2 and 3, one end side of the movable iron core 35 extends so as to enter the other end side of the through hole 12 b, and one end surface of the movable iron core 35 abuts on the other end surface of the rod 22. ing. In addition, a flange 35a protruding outward is formed at one end of the movable iron core 35, and an iron core return spring 36 is interposed between the guide ring 34 and the flange 35a. The movable iron core 35 is biased in the direction of pressing the rod 22 by the spring force of the iron core return spring 36.

  A cylindrical fixed iron core 41 is provided in the bobbin 33. One end surface of the fixed iron core 41 is a magnetic pole surface, and this magnetic pole surface is disposed so as to face the other end surface of the movable iron core 35. Therefore, the movable iron core 35 and the fixed iron core 41 are arranged coaxially. The outer diameter of the fixed iron core 41 is substantially the same as the inner diameter of the bobbin 33.

  A pair of coil terminals 42 are fitted into one end of the bobbin 33. One end of the coil terminal 42 is electrically connected to the coil 33 a, and the other end of the coil terminal 42 is electrically connected to the connection terminal 46 of the terminal block 45 attached to the upper part of the solenoid unit 31.

Next, the fixing member 51 will be described.
As shown in FIG. 4, the fixing member 51 is formed by bending a metal plate, which is a nonmagnetic material, into a substantially U-shape. The fixing member 51 includes a bottom portion 51a that comes into contact with one end surface of the body 12, and a pair of extending portions 51b extending in a direction orthogonal to the bottom surface of the bottom portion 51a from a pair of opposing side edges in the bottom portion 51a. Two screw holes 51c into which the screws 52 can be screwed are formed in the bottom 51a. The screw hole 51c is formed so as to overlap with the insertion hole 12c in a state where the fixing member 51 is mounted so as to cover a part of the body 12.

  The pair of extending portions 51 b are mounted in the mounting recess 12 a of the body 12. Further, the length in the extending direction from the bottom 51 a in the extending portion 51 b is longer than the length from one end to the other end in the longitudinal direction of the body 12. Further, the pair of extending portions 51b can be deformed in a direction in which the pair of opposing side edges in the bottom portion 51a come into contact with and separate from each other.

Next, a method of fixing the main valve portion 11 and the solenoid portion 31 in the electromagnetic valve 10 having the above configuration will be described.
As shown in FIG. 3, first, the extending portion 51b is mounted in the mounting recess 12a, and the fixing member 51 is disposed with respect to the body 12 so as to cover the one end surface of the body 12 and the mounting recess 12a. By screwing the screw 52 into the 51c and the insertion hole 12c, the fixing member 51 is fixed to the body 12, and the fixing member 51 and the body 12 are integrated. In this state, the distal end portion of the extending portion 51 b extends to a position separated from the other end surface of the body 12. Next, the pair of extending portions 51b are deformed in directions away from each other with a pair of opposing side edges in the bottom portion 51a as base points, and the guide ring 34 is moved to a pair while widening the interval between the pair of extending portions 51b. It arrange | positions between the extending parts 51b. At this time, the pair of extending portions 51 b are arranged with respect to the main valve portion 11 such that the solenoid portion 31 faces the pair of outer surfaces not covered by the magnetic cover 32 among the four outer surfaces of the guide ring 34. To do. Next, the distance between the pair of extending portions 51b is narrowed so that the pair of outer surfaces of the guide ring 34 are sandwiched between the pair of extending portions 51b.

  In this way, the pair of outer surfaces of the guide ring 34 and the tip portions of the pair of extending portions 51b are brought into contact with each other, and the one end surface of the guide ring 34 and the O-ring 26 are brought into contact with each other. At this time, one end side of the movable iron core 35 is inserted into the through hole 12 b of the body 12, and one end surface of the movable iron core 35 is brought into contact with the other end surface of the rod 22. Here, an O-ring 26 is interposed between one end face of the guide ring 34 and the other end face of the body 12, and the O-ring 26 protrudes from the other end face of the body 12. For this reason, the main valve part 11 and the solenoid part 31 move in a direction in which the O-ring 26 protrudes from the other end surface of the body 12 within a range in which the O-ring 26 is elastically deformed.

  That is, the main valve portion 11 and the solenoid portion 31 can be brought close to each other by crushing and elastically deforming the O-ring 26 between one end surface of the guide ring 34 and the other end surface of the body 12. Therefore, the movable iron core 35 is pressed by the other end surface of the rod 22, and this pressing force overcomes the spring force of the iron core return spring 36, so that the movable iron core 35 moves to the fixed iron core 41 side. As a result, the iron core stroke length L1 when the movable iron core 35 contacts and separates from the fixed iron core 41 is shortened.

  On the other hand, the main valve portion 11 and the solenoid portion 31 can be separated from each other by the repulsive force of the crushed O-ring 26. At this time, since the movable iron core 35 is in contact with the other end surface of the rod 22 by the spring force of the iron core return spring 36, the entire solenoid portion 31 excluding the movable iron core 35 is separated from the main valve portion 11. As a result, the fixed iron core 41 moves away from the movable iron core 35, and the iron core stroke length L1 becomes longer. Therefore, the iron core stroke length L1 can be adjusted within a range in which the O-ring 26 can be crushed. In other words, the iron core stroke length L1 is the longest when the O-ring 26 abuts against the guide ring 34 in a state where the O-ring 26 remains crushed for sealing and is not crushed most, and the O-ring 26 is the longest. The shortest when crushed.

  In this way, while adjusting the iron core stroke length L1, the iron core stroke length L1 becomes the same stroke length as the valve stroke length L2 when the valve body 21 moves from the supply valve seat to the discharge valve seat 19. In addition, the contact portions between the distal end portion of the extending portion 51b and the pair of outer surfaces of the guide ring 34 are joined by laser welding. As shown in FIGS. 1 and 5, laser welding is performed so as to aim between a portion of the pair of outer surfaces of the guide ring 34 exposed to the outside and the tip of the extending portion 51 b. Therefore, the distal end portion of the extending portion 51b and the pair of outer surfaces of the guide ring 34 are connected, the main valve portion 11 and the solenoid portion 31 are fixed by the fixing member 51, and the electromagnetic valve 10 is assembled. The O-ring 26 seals between the body 12 and the guide ring 34.

  In the electromagnetic valve 10 having the above-described configuration, when the coil 33a is energized and the coil 33a is excited, a magnetic circuit that passes through the fixed iron core 41, the magnetic cover 32, and the guide ring 34 is formed around the coil 33a. Then, the attractive force generated by the exciting action of the coil 33 a overcomes the spring force of the iron core return spring 36, the movable iron core 35 is attracted and moved toward the fixed iron core 41, and the movable iron core 35 is in contact with the fixed iron core 41. Become. Then, the valve element 21 moves in a direction away from the supply valve seat 18 by the spring force of the valve return spring 23 and is seated on the discharge valve seat 19 so that the supply port 13 and the output port 14 communicate with each other.

  Here, since the iron core stroke length L1 is the same as the valve stroke length L2, the movable iron core 35 is moved to the fixed iron core 41 side in order to move the valve body 21 from the supply valve seat 18 to the discharge valve seat 19. The magnetic force for adsorption is not wasted.

  On the other hand, when energization of the coil 33a is stopped, the attractive force due to the exciting action of the coil 33a disappears, and the movable iron core 35 tries to return to the original position by the spring force of the iron core return spring 36. Then, the pressing force with which the movable iron core 35 presses the rod 22 resists the spring force of the valve return spring 23, the rod 22 is pressed against the movable iron core 35, and the valve body 21 moves away from the discharge valve seat 19. To do. Then, the valve body 21 is seated on the supply valve seat 18 so that the output port 14 and the discharge port 15 communicate with each other.

In the above embodiment, the following effects can be obtained.
(1) An O-ring 26 is disposed between the main valve portion 11 and the solenoid portion 31. Then, when the main valve portion 11 and the solenoid portion 31 are fixed by the fixing member 51, the main valve portion 11 and the solenoid portion 31 can be moved in the direction of contacting and separating from each other by elastic deformation of the O-ring 26. it can. When the O-ring 26 is crushed to bring the main valve portion 11 and the solenoid portion 31 closer to each other, the movable iron core 35 moves to the fixed iron core 41 side, so the iron core stroke length L1 becomes shorter. Further, when the main valve portion 11 and the solenoid portion 31 are separated from each other by the return of the crushed O-ring 26, the entire solenoid portion 31 except the movable iron core 35 is separated from the main valve portion 11. It moves to the direction away from 35, and iron core stroke length L1 becomes long. Thus, while adjusting the iron core stroke length L1, when this iron core stroke length L1 becomes the same stroke length as the valve stroke length L2, the tip of the extending portion 51b and the pair of outer surfaces of the guide ring 34 The contact parts are joined by laser welding. Therefore, when the main valve portion 11 and the solenoid portion 31 are fixed by the fixing member 51, the iron core stroke length L1 can be fixed while adjusting to the same stroke length as the valve stroke length L2.

  (2) The iron core stroke length L1 is the same stroke length as the valve stroke length L2. Therefore, when the iron core stroke length L1 becomes larger than the valve stroke length L2, it is possible to avoid the problem that the magnetic force for attracting the movable iron core 35 to the fixed iron core 41 side is wasted. . Further, when the iron core stroke length L1 becomes too smaller than the valve stroke length L2, the valve element 21 is discharged from the supply valve seat 18 to the discharge valve seat 19 even when the movable iron core 35 is attracted to the fixed iron core 41. It is possible to avoid the problem that the user cannot move until he / she is seated.

  (3) The fixing member 51 is made of a metal material. The fixing member 51 is attached to and integrated with the main valve portion 11, and the extending portion 51 b of the fixing member 51 is joined to a pair of outer surfaces of the guide ring 34 in the solenoid portion 31. Therefore, the heat generated from the coil 33 a is transmitted to the fixing member 51 through the guide ring 34, and the heat can be radiated to the outside by the fixing member 51.

  (4) The fixing member 51 is made of a metal material that is a non-magnetic material. Therefore, when the fixing member 51 is a magnetic body, it is possible to avoid the problem that the magnetic flux passing through the guide ring 34 is transmitted to the fixing member 51 and the magnetic flux leaks.

  (5) Using the elastic deformation of the O-ring 26 disposed between the main valve part 11 and the solenoid part 31, the main valve part 11 and the solenoid part 31 can be moved in the direction of contacting and separating from each other. I was able to do it. Therefore, when the main valve portion 11 and the solenoid portion 31 are fixed by the fixing member 51, the function of moving the main valve portion 11 and the solenoid portion 31 in the direction in which the main valve portion 11 and the solenoid portion 31 are separated from each other, and the body 12 and the guide ring 34 Two functions, the function of sealing the gap, can be performed by one member.

  (6) The contact portions between the distal end portion of the extending portion 51b and the pair of outer surfaces of the guide ring 34 are joined by laser welding. Laser welding has high energy density and is easy to control, so it is suitable for fine welding and precision welding. The contact portion between the tip of the extended portion 51b and the pair of outer surfaces of the guide ring 34 is connected to each other. Suitable for joining.

  (7) When the location where the main valve portion 11 and the solenoid portion 31 are fixed by the fixing member 51 is determined in advance, the main valve portion 11, the solenoid portion 31 and the fixing member 51 are fixed if there is a dimensional tolerance. Unnecessary force acts on the part. However, in the present embodiment, the contact portions between the distal end portion of the extending portion 51b and the pair of outer surfaces of the guide ring 34 are joined by laser welding. The location to be fixed is not predetermined. Therefore, even if there is a dimensional tolerance in each of the main valve portion 11, the solenoid portion 31, and the fixing member 51, the main valve portion 11 and the solenoid portion 31 are connected to the fixing member without any unnecessary force acting on the fixing portion. 51 can be fixed.

  (8) The fixing member 51 is disposed so as to cover the one end surface of the body 12 and the mounting recess 12a. Therefore, in a state where the main valve portion 11 and the solenoid portion 31 are fixed by the fixing member 51, the fixing member 51 can function as a stopper that restricts movement of the body 12 toward one end side.

  (9) The fixing member 51 is disposed so as to cover the one end surface of the body 12 and the mounting recess 12a. Therefore, when the main valve portion 11 and the solenoid portion 31 are fixed by the fixing member 51, the fixing member 51 can prevent the retainer 17 from jumping out from the inside of the body 12 toward one end side of the body 12. it can.

  (10) The pair of extending portions 51b can be deformed in directions toward and away from each other with a pair of opposing side edges in the bottom portion 51a as base points. Therefore, the pair of extending portions 51b are deformed in a direction away from each other with the pair of opposing side edges in the bottom portion 51a as the base point, and the guide ring 34 is extended in a pair while extending the distance between the pair of extending portions 51b. It arrange | positions between the installation parts 51b, and can pinch | interpose a pair of outer surface of the guide ring 34, narrowing the space | interval of a pair of extension parts 51b.

  (11) The fixing member 51 includes a pair of extending portions 51b. The pair of extending portions 51b are welded to a pair of outer surfaces of the guide ring 34, and the main valve portion 11 and the solenoid portion 31 are fixed to the fixing member 51. It is fixed by. For this reason, for example, compared with the case where the fixing member 51 is formed in a square tube shape and the extending portions 51b are welded to the four side surfaces of the guide ring 34, the number of places to be welded is reduced, and the welding operation is simplified. can do.

In addition, you may change the said embodiment as follows.
In the embodiment, when the iron core stroke length L1 becomes the same stroke length as the valve stroke length L2, the contact portions between the tip of the extended portion 51b and the pair of outer surfaces of the guide ring 34 are joined by laser welding. However, it is not limited to this. For example, when the positions of the main valve portion 11 and the solenoid portion 31 reach a desired position, the contact portions between the distal end portion of the extending portion 51b and the pair of outer surfaces of the guide ring 34 are joined by laser welding. May be. According to this, when the main valve part 11 and the solenoid part 31 are fixed by the fixing member 51, the iron core stroke length of the movable iron core 35 can be fixed while adjusting to a desired stroke length.

  In the embodiment, the contact portions between the distal end portion of the extending portion 51b and the pair of outer surfaces of the guide ring 34 are joined together by laser welding. However, the present invention is not limited to this, for example, the distal end of the extending portion 51b by a caulking member The contact portions between the distal end portion of the extending portion 51b and the pair of outer surfaces of the guide ring 34 may be coupled by caulking the portion from the outside.

  In the embodiment, the contact portions between the distal end portion of the extending portion 51b and the pair of outer surfaces of the guide ring 34 are joined by laser welding. However, the present invention is not limited to this, and arc discharge, gas, plasma, electron beam (electron The contact portions between the distal end portion of the extending portion 51b and the pair of outer surfaces of the guide ring 34 may be welded using a welding method such as a wire).

  In the embodiment, the contact portions between the distal end portion of the extending portion 51b and the pair of outer surfaces of the guide ring 34 are joined by laser welding. However, the present invention is not limited thereto, and for example, the distal end of the extending portion 51b with an adhesive You may adhere | attach the contact part of a part and a pair of outer surface of the guide ring 34. FIG.

  In the embodiment, the main valve portion 11 and the solenoid portion 31 are moved in the direction of contacting and separating from each other by utilizing the elastic deformation of the O-ring 26 disposed between the main valve portion 11 and the solenoid portion 31. However, this is not a limitation. For example, a spring member as an elastic member is interposed between the main valve portion 11 and the solenoid portion 31, and the main valve portion 11 and the solenoid portion 31 are brought into contact with and separated from each other using the spring force of the spring member. You may make it move.

  In embodiment, although the fixing member 51 was formed from the metal material which is a nonmagnetic body, it may not be limited to this, for example, may be formed from the metal material which is a magnetic body. In this case, for example, the front end portion of the fixing member 51 and a part of the bonnet 30 are brought into contact with each other so that the contact portions are connected to each other.

  In embodiment, although the fixing member 51 was formed from the metal material, it is not restricted to this, For example, you may be formed from the synthetic resin material. In this case, for example, the front end portion of the fixing member 51 and a part of the bonnet 30 are brought into contact with each other so that the contact portions are connected to each other.

  In the embodiment, a locking projection is provided on the inner surface at the tip of the pair of extending portions 51b, and the fixing member 51 is locked to the pair of outer surfaces of the guide ring 34 by the locking projection. In the state, the portions where the fixing member 51 and the guide ring 34 are locked with each other may be connected by, for example, laser welding.

  In the embodiment, when the iron core stroke length L1 becomes the same stroke length as the valve stroke length L2, the main valve portion 11 and the solenoid portion 31 are fixed, but not limited to this, for example, the iron core stroke length L1 is When the valve stroke length L2 becomes longer, the main valve portion 11 and the solenoid portion 31 may be fixed.

  In the embodiment, the fixing member 51 is mounted so as to cover the one end surface of the body 12 and the mounting recess 12a and is integrated with the body 12, but this is not a limitation. For example, the fixing member 51 is preliminarily loaded in a mold for molding the body 12, and resin is injected into the mold, and the fixing member 51 is wrapped with a molten resin to be solidified, whereby the fixing member 51 and the body 12 are solidified. It may be integrated. In this case, it is necessary to insert-mold so that the front end portion of the fixing member 51 is exposed from the body 12.

  In the embodiment, the fixing member 51 has a substantially U-shape and is mounted so as to cover the one end surface of the body 12 and the mounting recess 12a. However, the fixing member 51 is not limited thereto, and the fixing member 51 is, for example, a rectangular tube shape. The fixing member 51 may be attached to the body 12 so as to cover the entire body 12.

  In the embodiment, the fixing member 51 is integrated with the main valve portion 11, and the tip portion of the fixing member 51 and the pair of outer surfaces of the guide ring 34 are brought into contact with each other to connect the contact portions. Not limited to. For example, the fixing member 51 may be integrated with the solenoid unit 31, and the tip of the fixing member 51 and a part of the body 12 may be brought into contact with each other to connect the contact portions.

Next, the technical idea that can be grasped from the above embodiment and other examples will be described below.
(A) The core stroke length when the movable iron core comes in contact with and separates from the fixed iron core is adjusted by the position adjusting means to be longer than the valve stroke length when the valve body comes into contact with and separates from the valve seat. 5. The electromagnetic valve according to claim 1, wherein the main valve portion and the solenoid portion are fixed by the fixing member in a state where the main valve portion is in a closed state.

  (B) The main valve portion and the solenoid portion are fixed by the fixing member when the iron core stroke length becomes the same stroke length as the valve stroke length by the position adjusting means. Solenoid valve described in the technical concept (a).

  (C) The stroke length of the iron core when the movable iron core comes into contact with and separates from the fixed iron core by the position adjusting means is equal to or longer than the valve stroke length when the valve body comes into contact with and separates from the valve seat. The method according to claim 5 or 6, wherein the main valve portion and the solenoid portion are fixed by the fixing member.

  (D) The technical idea (c) wherein the main valve part and the solenoid part are fixed by the fixing member when the iron core stroke length becomes the same stroke length as the valve stroke length. The main valve part and solenoid part fixing method in the solenoid valve described in 1.

  L1 ... Iron core stroke length, L2 ... Valve stroke length, 10 ... Solenoid valve, 11 ... Main valve section, 12 ... Body, 18 ... Supply valve seat, 19 ... Discharge valve seat, 20 ... Valve chamber, 21 ... Valve body, 26 ... O-ring as position adjusting means and elastic member, 31... Solenoid part, 33a... Coil, 34... Guide ring functioning as a magnetic circuit forming member, 35 .. movable iron core, 41.

Claims (6)

A valve body is housed in a valve chamber formed in the body, and a main valve portion that enables switching of a flow path by contact and separation of the valve body with respect to a valve seat provided in the valve chamber, and the valve body as a valve An electromagnetic valve in which a fixed iron core that is driven in a direction of moving toward and away from a seat, and a solenoid portion having a movable iron core that can move toward and away from the fixed iron core are fixed by a fixing member,
Between the main valve portion and the solenoid portion, there is provided a position adjusting means capable of adjusting the position in a direction in which the main valve portion and the solenoid portion are contacted and separated from each other,
The fixing member is integrated with one of the main valve part and the solenoid part, and the position of the main valve part and the solenoid part is adjusted by the position adjusting means, and the fixing member is on the other side. And the main valve portion and the solenoid portion are fixed by the fixing member ,
The fixing member is formed of a metal material and integrated with the main valve portion,
The electromagnetic valve, wherein the fixing member and the solenoid part are joined to each other by welding .   A valve body is housed in a valve chamber formed in the body, and a main valve portion that enables switching of a flow path by contact and separation of the valve body with respect to a valve seat provided in the valve chamber, and the valve body as a valve An electromagnetic valve in which a fixed iron core that is driven in a direction of moving toward and away from a seat, and a solenoid portion having a movable iron core that can move toward and away from the fixed iron core are fixed by a fixing member,
  Between the main valve portion and the solenoid portion, there is provided a position adjusting means capable of adjusting the position in a direction in which the main valve portion and the solenoid portion are contacted and separated from each other,
  The fixing member is integrated with one of the main valve part and the solenoid part, and the position of the main valve part and the solenoid part is adjusted by the position adjusting means, and the fixing member is on the other side. And the main valve portion and the solenoid portion are fixed by the fixing member,
  The fixing member is formed of a non-magnetic material and integrated with the main valve portion,
  The solenoid valve, wherein the fixing member is connected to a magnetic circuit forming member that forms a magnetic circuit by energizing a coil constituting the solenoid portion and exciting the coil. The electromagnetic valve according to claim 1 or 2 , wherein the position adjusting means is an elastic member disposed between the main valve portion and the solenoid portion. The fixing member is formed of a metal material and integrated with the main valve portion,
Wherein the fixed member and the solenoid unit, the solenoid valve according to 請 Motomeko 2 you, characterized in that the contact portions are joined by welding. The fixing member is formed of a non-magnetic material and integrated with the main valve portion,
2. The electromagnetic wave according to claim 1, wherein the fixing member is connected to a magnetic circuit forming member that forms a magnetic circuit by energizing a coil constituting the solenoid unit and exciting the coil. 3. valve. A valve body is housed in a valve chamber formed in the body, and a main valve portion that enables switching of a flow path by contact and separation of the valve body with respect to a valve seat provided in the valve chamber, and the valve body as a valve A main valve portion and a solenoid in a solenoid valve in which a fixed iron core that is driven in a direction of moving toward and away from a seat, and a solenoid portion having a movable iron core that can be moved toward and away from the fixed iron core are fixed by a fixing member Fixing method with the part,
Between the main valve portion and the solenoid portion, there is provided a position adjusting means made of an elastic body capable of adjusting the position in a direction in which the main valve portion and the solenoid portion are contacted and separated from each other,
The fixing member is integrated with one of the main valve part and the solenoid part, and the position of the main valve part and the solenoid part is adjusted by the position adjusting means, and the fixing member is on the other side. Connecting the main valve part and the solenoid part by the fixing member ,
The fixing member is formed of a non-magnetic material and integrated with the main valve portion,
The fixing member is brought into contact with a magnetic circuit forming member that forms a magnetic circuit by energizing the coil that constitutes the solenoid portion and the coil is excited, and the contact portions are joined by welding. The fixing method of the main valve part and the solenoid part in the solenoid valve.

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