WO2014174954A1 - Valve device - Google Patents
Valve device Download PDFInfo
- Publication number
- WO2014174954A1 WO2014174954A1 PCT/JP2014/057835 JP2014057835W WO2014174954A1 WO 2014174954 A1 WO2014174954 A1 WO 2014174954A1 JP 2014057835 W JP2014057835 W JP 2014057835W WO 2014174954 A1 WO2014174954 A1 WO 2014174954A1
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- WO
- WIPO (PCT)
- Prior art keywords
- joint
- valve
- plunger tube
- fitted
- plunger
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
- F16K31/0655—Lift valves
- F16K31/0665—Lift valves with valve member being at least partially ball-shaped
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/029—Electromagnetically actuated valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/10—Welded housings
- F16K27/102—Welded housings for lift-valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe
- F16L41/082—Non-disconnectible joints, e.g. soldered, adhesive or caulked joints
- F16L41/084—Soldered joints
Definitions
- the present invention relates to a valve device including a valve housing and a piping member joined thereto.
- the electromagnetic valve 801 disclosed in Patent Document 1 includes a cylindrical metal plunger tube 810 and a metal fluid inlet joint 881.
- the plunger tube 810 forms a valve chamber 811, and a fluid inlet joint 881 is joined to the peripheral wall portion 812 by brazing.
- the electromagnetic valve 801 described above as a brazing method between the plunger tube 810 and the fluid inlet joint 881, for example, when brazing in a furnace is used, it takes time to increase the temperature, so that the entire member to be brazed becomes high temperature. When heated, the plunger tube 810 and the fluid inlet joint 881 may become blunt. As a result, the plunger tube 810 and the fluid inlet joint 881 are likely to be deformed during handling, and this deformation makes it impossible to connect to the other pipe, or the plunger tube 810 and the plunger 820, valve body 830, and There was a possibility that the dimensional change of the valve seat member 840 or the like might occur. In particular, when the dimensional change of the valve seat member 840 occurs, the sealing performance between the valve seat member 840 and the valve body 830 may be deteriorated.
- each member is heated so that only the joining portion and the vicinity thereof are heated by joining the plunger tube 810 and the fluid inlet joint 881 using welding instead of brazing. It is conceivable to avoid dullness and dimensional change.
- laser welding as the welding method, one point is concentrated and heated by the laser beam, so that it is possible to effectively avoid blunting and dimensional change of each member.
- the plunger tube 810 has a cylindrical shape. Therefore, as shown in FIGS. 8A and 8B, the plunger tube The peripheral edge of the communication hole 814 provided to open in the peripheral wall portion 812 of 810 is not three-dimensionally curved but is three-dimensionally curved. Therefore, the peripheral edge S of the joint portion between the plunger tube 810 and the fluid inlet joint 881 is also not three-dimensionally curved as shown in FIGS. 9 (a) and 9 (b). In order to focus the light, it is necessary to move the laser in a three-dimensional direction, and joining using laser welding has a problem that the number of manufacturing steps increases and the cost increases.
- an object of the present invention is to provide a valve device having a configuration in which a pipe member can be more easily joined to a peripheral wall portion of a cylindrical valve housing using laser welding.
- the invention described in claim 1 is a valve device including a cylindrical valve housing and one or a plurality of piping members joined to a peripheral wall portion of the valve housing.
- the peripheral wall portion of the valve housing communicates with the inside and the outside of the valve housing and has one planar portion formed with one or a plurality of communication holes into which one end portions of the one or more piping members are fitted.
- the one or more piping members are joined to the planar portion by laser welding in a state where one end is fitted to the corresponding one or more communication holes. It is a valve device.
- the invention described in claim 2 is a valve device including a cylindrical valve housing and a plurality of piping members joined to a peripheral wall portion of the valve housing.
- the peripheral wall portion of the housing has a plurality of planar portions formed by distributing a plurality of communication holes that communicate with the inside and outside of the valve housing and are fitted with one end portions of the plurality of piping members.
- the valve device is characterized in that a pipe member is joined to the plurality of planar portions by laser welding in a state in which one end is fitted to the plurality of communication holes corresponding to each of the piping members.
- the peripheral wall portion of the valve housing communicates with the inside and outside of the valve housing, and the one or more communication holes into which one end portions of the one or more piping members are fitted. It has one planar part formed. And one or a plurality of piping members are joined to the above-mentioned plane part by laser welding in the state where one end was fitted in one or a plurality of communicating holes corresponding to each, respectively. Since it did in this way, since the communicating hole by which the one end part of a piping member is fitted is provided in the plane part, the peripheral edge of a communicating hole is contained in one plane.
- the peripheral wall portion of the valve housing is formed by distributing a plurality of communication holes that communicate with the inside and outside of the valve housing and are fitted with one end portions of the plurality of piping members. It has a plurality of plane portions.
- the plurality of piping members are joined to the plurality of planar portions by laser welding in a state where one end portions are fitted into the plurality of communication holes corresponding to the respective piping members. Since it did in this way, since the communicating hole by which the one end part of a piping member is fitted is provided in the plane part, the peripheral edge of a communicating hole is contained in one plane.
- FIG. 1 It is a longitudinal cross-sectional view of the solenoid valve of one Embodiment of this invention.
- A is a perspective view which shows a part of plunger tube with which the solenoid valve of FIG. 1 is provided,
- (b) is sectional drawing which follows the XX line of (a).
- A) is a perspective view showing a state where the first joint is fitted to the plunger tube of FIG. 2 (a), and (b) is a cross-sectional view taken along line XX of (a).
- A) is a fragmentary sectional view which shows the state before welding of the plunger tube with which the solenoid valve of FIG.
- FIG. 1 is equipped, a valve seat member, a 1st coupling, and a 2nd coupling
- (b) shows the state after welding. It is a fragmentary sectional view.
- (A) is a fragmentary perspective view which shows the structure of the 1st modification of the solenoid valve of FIG. 1 (structure in which the several communication hole was formed in one plane part),
- (b) is FIG.
- It is a fragmentary perspective view which shows the structure of the 2nd modification of a solenoid valve (structure in which one communicating hole was formed in each of several plane parts).
- (A) is a fragmentary perspective view which shows the structure of the reference example of the solenoid valve of FIG. 1 (structure in which one communicating hole was formed in one plane part),
- (b) is the solenoid valve of FIG.
- FIG. 7 It is a fragmentary perspective view which shows the structure of a reference example (structure in which several communicating holes were formed in one plane part),
- (c) is a fragmentary perspective view which shows the structure of the 5th modification of the solenoid valve of FIG. It is a figure (structure in which one communicating hole was formed in each of a plurality of plane parts).
- (A) is a perspective view which shows a part of plunger tube with which the solenoid valve of FIG. 7 is equipped,
- (b) is sectional drawing which follows the XX line of (a).
- (A) is a perspective view showing a state in which the first joint is fitted to the plunger tube of FIG. 8 (a), and
- (b) is a sectional view taken along line XX of (a).
- FIG. 1 is a longitudinal sectional view of a solenoid valve according to an embodiment of the present invention.
- 2A is a perspective view of a part of a plunger tube included in the electromagnetic valve of FIG. 1
- FIG. 2B is a cross-sectional view taken along line XX of FIG. 3A is a perspective view showing a state in which the first joint is fitted to the plunger tube of FIG. 2A
- FIG. 3B is a cross-sectional view taken along line XX of FIG. is there.
- 4A is a partial cross-sectional view showing a state before the plunger tube and the valve seat member, the first joint, and the second joint of the solenoid valve of FIG. 1 are welded
- FIG. 4B is a state after welding.
- FIG. the concept of “upper and lower” in the following description corresponds to the upper and lower sides in FIG. 1 and indicates the relative positional relationship between the members, and does not indicate the absolute positional relationship.
- the electromagnetic valve 1 of the present embodiment includes a plunger tube 10, a plunger 20, a valve body 30, a valve seat member 40, an attractor 50, a coil spring 60, and an electromagnetic coil 70.
- the 1st joint 81, the 2nd joint 82, the 1st welding part 91, and the 2nd welding part 92 are provided.
- the plunger tube 10 is formed in a cylindrical shape using a non-magnetic metal such as austenitic stainless steel, for example.
- the plunger tube 10 forms a valve chamber 11 inside thereof.
- the peripheral wall portion 12 of the plunger tube 10 is provided with one flat portion 13 having a part formed in a flat shape.
- a communication hole 14 that communicates the inside and the outside of the plunger tube 10 is provided in the central portion of the flat portion 13.
- the communication hole 14 is subjected to a burring process that protrudes toward the inside of the plunger tube 10.
- the plunger tube 10 corresponds to an example of a valve housing.
- the communication hole 14 of the plunger tube 10 is provided in the plane portion 13. That is, the peripheral edge of the communication hole 14 is included in one plane. Therefore, as shown in FIGS. 3A and 3B, when one end portion of the first joint 81 described later is fitted into the communication hole 14 provided in the flat portion 13 of the plunger tube 10, the joints thereof are performed.
- the peripheral edge S of the location is also included in one plane.
- a tube material 95 to be described later that is sandwiched between the inner peripheral surface of the communication hole 14 and the outer peripheral surface of the plunger tube 10 is omitted for convenience of explanation.
- the plunger 20 is formed in a cylindrical shape using, for example, a magnetic metal such as iron.
- the plunger 20 is disposed in the plunger tube 10 so as to be slidable in the direction of the axis L (the vertical direction in the drawing).
- a valve body holding portion 21 is formed at the lower end portion of the plunger 20.
- the valve body holding part 21 has a substantially cylindrical shape, and a claw part 21a at the lower end thereof is bent inward.
- a valve body 30 to be described later is accommodated inside the valve body holding portion 21 so as to be slightly movable in the direction of the axis L, and the claw portion 21a prevents the valve body 30 from coming downward.
- a coil spring accommodating portion 22 that accommodates a coil spring 60 (described later) formed by hollowing out the plunger 20 in the axis L direction is provided at the upper end portion of the plunger 20.
- the plunger 20 has a flat D-cut surface 23 formed on a part of its outer peripheral surface. The D-cut surface 23 is formed by cutting a plane parallel to the axis L direction as a cross section.
- the valve body 30 is formed in a spherical shape using, for example, a metal as a material.
- the valve body 30 is held by the valve body holding portion 21 of the plunger 20 and moves in the direction of the axis L as the plunger 20 moves.
- the valve seat member 40 is made of, for example, a metal such as austenitic stainless steel.
- the valve seat member 40 includes a cylindrical small-diameter portion 41, a cylindrical large-diameter portion 42 connected to the lower end of the small-diameter portion 41, a flange portion 43 formed to protrude outward from the lower end of the large-diameter portion, Are provided integrally.
- a valve port 44 is formed at the upper end of the small diameter portion 41.
- the valve seat member 40 is disposed in the plunger tube 10 with its axis superimposed on the axis L so that the valve seat member 40 is positioned in the plunger 20 and the valve port 44 faces the valve body 30 held by the plunger 20. . Further, the valve seat member 40 is joined by welding while the peripheral edge of the flange portion 43 is fitted to the lower end portion of the inner peripheral surface of the plunger tube 10.
- the attractor 50 is formed in a cylindrical shape using, for example, a magnetic metal such as iron.
- Part of the suction element 50 is inserted into the upper end portion of the plunger tube 10 and is attached by joining the periphery of the upper end part and the portion of the outer peripheral surface of the suction element 50 that contacts the periphery by laser welding. .
- the coil spring 60 has a lower end abutted against the bottom of the coil spring accommodating portion 22 formed on the plunger 20, and an upper end abutted against the lower surface of the attractor 50 in the compressed state. Is arranged in.
- the coil spring 60 presses the plunger 20 downward in the figure so that the valve port 44 is closed by the valve body 30 when the plunger 20 is not sucked by the suction element 50.
- the electromagnetic coil 70 has a coil body 71 configured by sealing a cylindrical bobbin around which a conducting wire is wound with a resin, and an outer box 72 that houses the coil body 71.
- the electromagnetic coil 70 is arranged inside the coil body 71 so that a part of the plunger tube 10 and the attractor 50 are accommodated, and the outer box 72 is screwed to the attractor 50 with a screw N.
- the electromagnetic coil 70 When energized, the electromagnetic coil 70 generates a magnetic force to magnetize the attractor 50, whereby the plunger 20 is attracted by the magnetic force of the attractor 50 and moved upward in the figure.
- the first joint 81 is formed in a tubular shape using, for example, a metal such as copper. One end of the first joint 81 is fitted into the communication hole 14 of the plunger tube 10 and joined by welding. Between the 1st coupling 81 and the plane part 13 of the surrounding wall part 12 of the plunger tube 10, the 1st welding part 91 which joins them mutually is provided.
- the first joint 81 corresponds to an example of a piping member.
- the second joint 82 is formed in a tubular shape using, for example, a metal such as copper. One end of the second joint 82 is fitted inside the large-diameter portion 42 of the valve seat member 40 and is joined by welding. Between the 2nd coupling 82 and the large diameter part 42 of the valve seat member 40, the 2nd welding part 92 which joins them mutually is provided.
- the first welding portion 91 includes stainless steel constituting the plunger tube 10, copper constituting the first joint 81, and nickel (Ni) between the planar portion 13 of the plunger tube 10 and the first joint 81. Each is a portion that has been melted by laser welding, mixed and then solidified. The plunger tube 10 and the first joint 81 are joined to each other through the first welded portion 91.
- the second welded portion 92 includes stainless steel constituting the large diameter portion 42 of the valve seat member 40 and copper constituting the second joint 82 between the large diameter portion 42 of the valve seat member 40 and the second joint 82.
- Nickel (Ni) is a portion that is solidified after being melted and mixed by laser welding.
- the valve seat member 40 and the second joint 82 are joined to each other through the second welded portion 92.
- the solenoid valve 1 Since the solenoid valve 1 has the above-described configuration, in the non-energized state where the electromagnetic coil 70 is not energized, the attractor 50 is not magnetized because the electromagnetic coil 70 does not generate a magnetic force, and the coil spring 60 is pressed. Due to the pressure, the plunger 20 is positioned away from the suction element 50. At this time, the valve body 30 is seated on the valve seat member 40 and is in a valve-closed state.
- the attractor 50 is magnetized because the electromagnetic coil 70 generates a magnetic force, and the magnetic force generated by the attractor 50 against the pressing force of the coil spring 60 is applied.
- the plunger 20 is in a position in contact with the suction element 50.
- the valve body 30 is separated from the valve seat member 40 and is in a valve open state.
- a valve seat member 40 is joined to the plunger tube 10 in advance by welding. 4A, one end portion of the first joint 81 is inserted and fitted into the communication hole 14 of the plunger tube 10, and the inner peripheral surface of the communication hole 14 of the plunger tube 10 and the first joint.
- a tube material 95 made of nickel (Ni) having a thickness of about 0.1 mm to 0.5 mm is press-fitted between the outer peripheral surface of 81.
- one end portion of the first joint 81 may be press-fitted inside the tube material 95 and fitted. That is, the first joint 81 is fitted into the communication hole 14 of the plunger tube 10, and the tube material 95 is sandwiched between the plunger tube 10 and the first joint 81.
- the inner peripheral surface portion of the communication hole 14 (that is, the peripheral wall portion of the plunger tube 10), the tube material 95, and the first joint 81 are extended from the outside of the plunger tube 10 along the circumferential direction of the communication hole 14. Irradiation is stopped after irradiating the laser L so that the outer peripheral surface portions of the two melt simultaneously.
- the stainless steel constituting the inner peripheral surface portion of the communication hole 14 of the plunger tube 10, the nickel constituting the tube material 95, and the copper constituting the first joint 81 are melted.
- the first welded portion 91 is formed over the entire circumference of the communication hole 14 between the plunger tube 10 and the first joint 81 after being mixed and solidified.
- the plunger tube 10 and the first joint 81 are joined to each other by the first welded portion 91.
- one end portion of the second joint 82 is inserted and fitted into the large diameter portion 42 of the valve seat member 40, and the inner peripheral surface of the large diameter portion 42 of the valve seat member 40.
- a tube member 96 made of nickel (Ni) having a thickness of about 0.1 mm to 0.5 mm is press-fitted between the first joint 82 and the outer peripheral surface of the second joint 82.
- the inner peripheral surface portion of the large-diameter portion 42 that is, the valve seat member 40
- the tube member 96 are extended over the entire circumference from the outside of the valve seat member 40 along the circumferential direction of the inner peripheral surface of the large-diameter portion 42.
- irradiation is stopped.
- the stainless steel constituting the large-diameter portion 42 of the valve seat member 40, the nickel constituting the tube member 96, and the copper constituting the second joint 82 are respectively melted and mixed.
- the second welded portion 92 is formed over the entire inner peripheral surface of the large-diameter portion 42 between the valve seat member 40 and the second joint 82.
- the valve seat member 40 and the second joint 82 are joined to each other by the second welded portion 92.
- the communication hole 14 is formed in which the peripheral wall portion 12 of the plunger tube 10 communicates with the inside and outside of the plunger tube 10 and one end of the first joint 81 is fitted. It has only one plane part 13. And the 1st coupling 81 is joined to the plane part 13 by laser welding in the state by which the one end part was fitted by the communication hole 14 corresponding to it. Since it did in this way, since the communicating hole 14 with which the one end part of the 1st coupling 81 is fitted is provided in the plane part 13, the periphery of the communicating hole 14 is contained in one plane.
- the peripheral edge S of the joint portion where the outer peripheral surface of the first joint and the inner peripheral surface of the communication hole 14 come into contact with each other is also included in one plane. Therefore, in welding, it is not necessary to move the laser in the three-dimensional direction in order to focus the laser beam, and it is only necessary to move the laser in the two-dimensional direction along the one plane after focusing the laser beam once. . Thereby, the 1st coupling 81 can be joined more easily to the surrounding wall part 12 of the cylindrical plunger tube 10 using laser welding.
- valve apparatus of this invention is not limited to the structure of these embodiment.
- FIG. 5A is a perspective view showing a configuration of a first modification of the solenoid valve of FIG. 1 (a configuration in which a plurality of communication holes are formed in one plane portion), and FIG. It is a perspective view which shows the structure of the 2nd modification of this solenoid valve (structure by which one communicating hole was formed in each of several plane parts).
- the planar wall 13A of the plunger tube 10A is provided with one flat surface portion 13A, and a plurality of communication holes 14A and 14B are formed in the flat surface portion 13A.
- the solenoid valve 2 which has the structure by which coupling 81A, 81B was fitted by each of 14A, 14B, and was joined by laser welding. That is, one planar portion 13A in which the peripheral wall portion 12A of the plunger tube 10A communicates the inside and outside of the plunger tube 10A and a plurality of communication holes 14A, 14B into which one end portions of the plurality of joints 81A, 81B are fitted is formed. have.
- a plurality of joints 81A and 81B are joined to the plane portion 13A by laser welding in a state in which one end is fitted to the corresponding communication holes 14A and 14B. Such a configuration may be adopted.
- the peripheral wall portion 12C of the plunger tube 10C is provided with a plurality of plane portions 13C, 13D, and communication holes 14C, 14D are formed in the respective plane portions 13C, 14D.
- 14D may be a solenoid valve 3 having a configuration in which joints 81C and 81D are fitted and joined by laser welding.
- the peripheral wall portion 12C of the plunger tube 10C communicates with the inside and outside of the plunger tube 10C, and a plurality of communication holes 14C and 14D into which one end portions of the plurality of joints 81C and 81D are fitted are distributed. It has plane portions 13C and 13D.
- a plurality of joints 81C and 81D are joined to the plurality of planar portions 13C and 13D by laser welding in a state where one end is fitted to the corresponding communication holes 14C and 14D, respectively.
- Such a configuration may be adopted.
- the communication hole into which one end of the joint is fitted is provided in the flat surface portion, so that the peripheral edge of the communication hole is included in one flat surface. For this reason, when one end of the joint is fitted into the communication hole, the peripheral edge of the joint where the outer peripheral surface of the joint and the inner peripheral surface of the communication hole come into contact with each other is included in one plane. There is no need to move the laser in the three-dimensional direction in order to adjust the focus, and it is only necessary to move the laser in the two-dimensional direction along the one plane after focusing the laser beam once. Thereby, a joint can be more easily joined to the surrounding wall part of a cylindrical plunger tube using laser welding.
- the plunger tube 10E includes a peripheral wall portion 12E formed in a rectangular tube shape, and a ridge line R extending in the axial direction (vertical direction in the drawing) of the peripheral wall portion 12E. Is provided with a plane portion 13E so as to be divided (divided) in the axial direction, and a joint 81E is fitted into a communication hole 14E formed in the plane portion 13E and joined by laser welding. Is considered as a reference example.
- the peripheral wall portion of the square tube-shaped plunger tube 10E is 12E, and one flat portion 13E in which one communication hole 14E is formed which communicates the inside and outside of the plunger tube 10E and one end of one joint 81E is fitted.
- the planar portion 13E is arranged so that the ridgeline R in the peripheral wall portion 12E of the plunger tube 10E is arranged in the extending direction of the ridgeline R, and one end of the joint 81E is fitted into the corresponding communication hole 14E. In the state, it is joined to the flat portion 13E by laser welding.
- the plunger tube 10 ⁇ / b> F includes a peripheral wall portion 12 ⁇ / b> F formed in a rectangular tube shape, and a ridgeline R extending in the axial direction (vertical direction in the drawing) of the peripheral wall portion 12 ⁇ / b> F.
- a solenoid valve 5 having a configuration in which joints 81F and 81G are fitted into communication holes 14F and 14G formed in the plane portion 13F and joined by laser welding. Is considered as a reference example.
- the peripheral wall portion 12F of the plunger tube 10F communicates the inside and outside of the plunger tube 10F, and one planar portion 13F in which a plurality of communication holes 14F and 14G are formed into which one end portions of the plurality of joints 81F and 81G are fitted.
- the planar portion 13F is arranged so as to be aligned in the extending direction of the ridgeline R with respect to the ridgeline R in the peripheral wall portion 12F of the plunger tube 10F, and the plurality of joints 81F and 81G include a plurality of communication holes 14F, It is joined to the flat portion 13F by laser welding with one end fitted to 14G.
- the plunger tube 10H includes a peripheral wall portion 12H formed in a rectangular tube shape, and a ridge line R extending in the axial direction (vertical direction in the drawing) of the peripheral wall portion 12H.
- Plane portions 13H and 13J are provided so as to divide (separate) them in the axial direction, and joints 81H and 81J are fitted into communication holes 14H and 14J formed in the plane portions 13H and 13J and joined by laser welding.
- a solenoid valve 6 having the above-described configuration is considered as a reference example.
- the peripheral wall portion 12H of the plunger tube 10H communicates with the inside and outside of the plunger tube 10H, and a plurality of communication holes 14H and 14J into which one end portions of the plurality of joints 81H and 81J are fitted are distributed. It has plane portions 13H and 13J.
- the plurality of flat portions 13H and 13J are arranged so as to be aligned in the extending direction of the ridgeline R with respect to the ridgeline R in the peripheral wall portion 12H of the plunger tube 10H, and the plurality of joints 81H and 81J are respectively connected to the plurality of communication portions.
- the holes 14H and 14J are joined to the plurality of flat portions 13H and 13J by laser welding in a state where one end is fitted.
- a communication hole in which a flat portion that is flattened by eliminating the ridgeline is disposed in a portion where the ridgeline in the peripheral wall portion of the plunger tube extends, and one end portion of the joint is fitted to the flat portion. Therefore, the peripheral edge of the communication hole is included in one plane. For this reason, when one end of the joint is fitted into the communication hole, the peripheral edge of the joint where the outer peripheral surface of the joint and the inner peripheral surface of the communication hole come into contact with each other is included in one plane.
- the tube material made of nickel is used for welding of each joint, but is not limited to this.
- the plunger tube and valve seat member and each joint are made of the same kind of metal, such as a combination of metals that are unlikely to cause poor welding, the tube material as described above is not used.
- the plunger tube, the valve seat member, and each joint may be directly joined by laser welding.
- the tube material which is a metal material sandwiched between the plunger tube and the valve seat member and each joint, is made of nickel, but is not limited thereto. is not.
- a material constituting such a metal material any metal can be used as long as it is a metal that is mixed with stainless steel and copper by welding, and the type of the metal used as the material is arbitrary.
- a material constituting the metal material it is particularly preferable that one material selected from nickel, lithium, bismuth, gold and platinum is a main component (including more than 50% by weight). By using it, weldability can be improved and poor welding can be suppressed.
- phosphor copper brazing, silver brazing, or nickel brazing may be used as a material constituting the metal material.
- Phosphor copper brazing JISZ3264
- Silver brazing JISZ3261
- Nickel brazing JISZ3265
- Nickel brazing is a brazing material containing nickel as a main component, to which chromium, boron, silicon, or the like is added.
- the first joint, the second joint, and the like are made of pure copper, but the present invention is not limited to this.
- a material of such a piping member copper or a copper alloy containing copper as a main component (including more than 50% by weight) may be used.
- the material of the piping member is particularly preferably one copper (including a copper alloy) selected from pure copper, oxygen-free copper, tough pitch copper, phosphorus deoxidized copper and aluminum bronze.
- the nickel plating layer or the nickel-type member melt-adhered to the location where it joins with the plunger tube or the valve seat member in outer peripheral surfaces, such as a 1st joint and a 2nd joint, by welding An adhesion part may be provided.
- Solenoid valve (valve device) 10, 10A, 10C, 10E, 10F, 10H Plunger tube (valve housing) 11 Valve chamber 12, 12A, 12C, 12E, 12F, 12H Peripheral wall portion 13, 13A, 13C, 13D, 13E, 13F, 13H, 13J Planar portion 14, 14A-14H Communication hole 20 Plunger 30 Valve body 40 Valve seat member 50 Suction element 60 Coil spring 70 Electromagnetic coil 81 First joint (piping member) 81A to 81H Fitting (Piping member) 82 Second joint 91 First welded portion 92 Second welded portion 95, 96 Tube material
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Valve Housings (AREA)
- Branch Pipes, Bends, And The Like (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
Provided is a valve device having a configuration which enables a pipe member to be more easily joined by laser welding to the peripheral wall of a cylindrically shaped valve housing.
A solenoid valve (1) is configured in such a manner that the peripheral wall (12) of the plunger tube (10) thereof has a single flat surface portion (13) in which a through-hole (14) is formed, the through-hole (14) connecting the inside and outside of the plunger tube (10) and allowing one end of a first joint (81) to be fitted therein. The first joint (81) is joined by laser welding to the flat surface portion (13) while the one end of the first joint (81) is fitted in the through-hole (14) corresponding to the one end.
Description
本発明は、弁ハウジングとそれに接合される配管部材とを備えた弁装置に関する。
The present invention relates to a valve device including a valve housing and a piping member joined thereto.
従来、弁装置として、例えば、特許文献1に開示された電磁弁がある。特許文献1に開示された電磁弁801は、図7に示すように、円筒形状の金属製のプランジャチューブ810と、金属製の流体入口継手881と、を有している。プランジャチューブ810は、弁室811を形成しており、その周壁部812には流体入口継手881がろう付けにより接合されている。
Conventionally, as a valve device, for example, there is an electromagnetic valve disclosed in Patent Document 1. As shown in FIG. 7, the electromagnetic valve 801 disclosed in Patent Document 1 includes a cylindrical metal plunger tube 810 and a metal fluid inlet joint 881. The plunger tube 810 forms a valve chamber 811, and a fluid inlet joint 881 is joined to the peripheral wall portion 812 by brazing.
上述した電磁弁801において、プランジャチューブ810と流体入口継手881とのろう付け方法として、例えば、炉中ろう付けを用いた場合、温度上昇に時間を要するためろう付けされる部材の全体が高温に加熱されて、プランジャチューブ810及び流体入口継手881が鈍ってしまうことがある。これにより、プランジャチューブ810及び流体入口継手881が取り扱い時に変形しやすくなり、この変形により相手配管と接続できなくなってしまったり、プランジャチューブ810、並びに、これに収容されるプランジャ820、弁体830及び弁座部材840などの寸法変化が生じてしまったりするおそれがあった。特に、弁座部材840の寸法変化が生じると、弁座部材840と弁体830との密封性が低下してしまうおそれがあった。
In the electromagnetic valve 801 described above, as a brazing method between the plunger tube 810 and the fluid inlet joint 881, for example, when brazing in a furnace is used, it takes time to increase the temperature, so that the entire member to be brazed becomes high temperature. When heated, the plunger tube 810 and the fluid inlet joint 881 may become blunt. As a result, the plunger tube 810 and the fluid inlet joint 881 are likely to be deformed during handling, and this deformation makes it impossible to connect to the other pipe, or the plunger tube 810 and the plunger 820, valve body 830, and There was a possibility that the dimensional change of the valve seat member 840 or the like might occur. In particular, when the dimensional change of the valve seat member 840 occurs, the sealing performance between the valve seat member 840 and the valve body 830 may be deteriorated.
そこで、このような問題を回避するために、ろう付けに代えて溶接を用いてプランジャチューブ810と流体入口継手881とを接合することにより、接合箇所及びその近傍のみ加熱されるようにして各部材の鈍りや寸法変化など回避することが考えられる。そして、溶接方法としてレーザー溶接を用いることで、レーザー光によって一点が集中して加熱されるので、効果的に各部材の鈍りや寸法変化など回避することができる。
Therefore, in order to avoid such a problem, each member is heated so that only the joining portion and the vicinity thereof are heated by joining the plunger tube 810 and the fluid inlet joint 881 using welding instead of brazing. It is conceivable to avoid dullness and dimensional change. By using laser welding as the welding method, one point is concentrated and heated by the laser beam, so that it is possible to effectively avoid blunting and dimensional change of each member.
しかしながら、レーザー溶接では溶接箇所に焦点を合わせることが必要であるところ、上述した電磁弁801ではプランジャチューブ810が円筒形状であるので、図8(a)、(b)に示すように、プランジャチューブ810の周壁部812に開口して設けられた連通孔814の周縁が一平面上になく三次元に湾曲している。そのため、プランジャチューブ810と流体入口継手881との接合箇所の周縁Sについても、図9(a)、(b)に示すように、一平面上になく三次元に湾曲しており、そのため、レーザー光の焦点を合わせるためにレーザーを三次元方向に移動させる必要があり、レーザー溶接を用いた接合は製作工数が増加して、コストが上がるという問題があった。
However, in laser welding, it is necessary to focus on the welded portion. In the above-described electromagnetic valve 801, the plunger tube 810 has a cylindrical shape. Therefore, as shown in FIGS. 8A and 8B, the plunger tube The peripheral edge of the communication hole 814 provided to open in the peripheral wall portion 812 of 810 is not three-dimensionally curved but is three-dimensionally curved. Therefore, the peripheral edge S of the joint portion between the plunger tube 810 and the fluid inlet joint 881 is also not three-dimensionally curved as shown in FIGS. 9 (a) and 9 (b). In order to focus the light, it is necessary to move the laser in a three-dimensional direction, and joining using laser welding has a problem that the number of manufacturing steps increases and the cost increases.
そこで、本発明は、筒形状の弁ハウジングの周壁部にレーザー溶接を用いて配管部材をより容易に接合できる構成の弁装置を提供することを課題とする。
Therefore, an object of the present invention is to provide a valve device having a configuration in which a pipe member can be more easily joined to a peripheral wall portion of a cylindrical valve housing using laser welding.
請求項1に記載された発明は、上記課題を解決するために、円筒形状の弁ハウジングと、前記弁ハウジングの周壁部に接合された1つ又は複数の配管部材と、を備えた弁装置において、前記弁ハウジングの周壁部が、前記弁ハウジングの内外を連通しかつ前記1つ又は複数の配管部材の一端部が嵌合される1つ又は複数の連通孔が形成された1つの平面部分を有し、前記1つ又は複数の配管部材が、それぞれに対応する前記1つ又は複数の連通孔に一端部を嵌合された状態で前記平面部分にレーザー溶接により接合されていることを特徴とする弁装置である。
In order to solve the above problems, the invention described in claim 1 is a valve device including a cylindrical valve housing and one or a plurality of piping members joined to a peripheral wall portion of the valve housing. The peripheral wall portion of the valve housing communicates with the inside and the outside of the valve housing and has one planar portion formed with one or a plurality of communication holes into which one end portions of the one or more piping members are fitted. And the one or more piping members are joined to the planar portion by laser welding in a state where one end is fitted to the corresponding one or more communication holes. It is a valve device.
請求項2に記載された発明は、上記課題を解決するために、円筒形状の弁ハウジングと、前記弁ハウジングの周壁部に接合された複数の配管部材と、を備えた弁装置において、前記弁ハウジングの周壁部が、前記弁ハウジングの内外を連通しかつ前記複数の配管部材の一端部が嵌合される複数の連通孔が振り分けられて形成された複数の平面部分を有し、前記複数の配管部材が、それぞれに対応する前記複数の連通孔に一端部を嵌合された状態で前記複数の平面部分にレーザー溶接により接合されていることを特徴とする弁装置である。
In order to solve the above-described problem, the invention described in claim 2 is a valve device including a cylindrical valve housing and a plurality of piping members joined to a peripheral wall portion of the valve housing. The peripheral wall portion of the housing has a plurality of planar portions formed by distributing a plurality of communication holes that communicate with the inside and outside of the valve housing and are fitted with one end portions of the plurality of piping members. The valve device is characterized in that a pipe member is joined to the plurality of planar portions by laser welding in a state in which one end is fitted to the plurality of communication holes corresponding to each of the piping members.
請求項1に記載された発明によれば、弁ハウジングの周壁部が、弁ハウジングの内外を連通しかつ1つ又は複数の配管部材の一端部が嵌合される1つ又は複数の連通孔が形成された1つの平面部分を有している。そして、1つ又は複数の配管部材が、それぞれに対応する1つ又は複数の連通孔に一端部を嵌合された状態で前記平面部分にレーザー溶接により接合されている。このようにしたことから、配管部材の一端部が嵌合される連通孔が平面部分に設けられているので、連通孔の周縁が一平面に含まれることになる。そのため、配管部材の一端部が当該連通孔に嵌合されると、配管部材の外周面と連通孔の内周面とが接する接合箇所の周縁についても一平面に含まれるので、溶接において、レーザー光の焦点を合わせるためにレーザーを三次元方向に移動させる必要がなく、一旦レーザー光の焦点を合わせたのちレーザーを当該一平面に沿う二次元方向に移動させるだけでよい。これにより、円筒形状の弁ハウジングの周壁部にレーザー溶接を用いて配管部材をより容易に接合できる。
According to the first aspect of the present invention, the peripheral wall portion of the valve housing communicates with the inside and outside of the valve housing, and the one or more communication holes into which one end portions of the one or more piping members are fitted. It has one planar part formed. And one or a plurality of piping members are joined to the above-mentioned plane part by laser welding in the state where one end was fitted in one or a plurality of communicating holes corresponding to each, respectively. Since it did in this way, since the communicating hole by which the one end part of a piping member is fitted is provided in the plane part, the peripheral edge of a communicating hole is contained in one plane. Therefore, when one end portion of the piping member is fitted into the communication hole, the peripheral edge of the joint where the outer peripheral surface of the piping member and the inner peripheral surface of the communication hole are included in one plane. There is no need to move the laser in the three-dimensional direction in order to focus the light, and it is only necessary to move the laser in the two-dimensional direction along the one plane after the laser light is focused once. Thereby, a piping member can be more easily joined to the surrounding wall part of a cylindrical valve housing using laser welding.
請求項2に記載された発明によれば、弁ハウジングの周壁部が、弁ハウジングの内外を連通しかつ複数の配管部材の一端部が嵌合される複数の連通孔が振り分けられて形成された複数の平面部分を有している。そして、複数の配管部材が、それぞれに対応する複数の連通孔に一端部を嵌合された状態で前記複数の平面部分にレーザー溶接により接合されている。このようにしたことから、配管部材の一端部が嵌合される連通孔が平面部分に設けられているので、連通孔の周縁が一平面に含まれることになる。そのため、配管部材の一端部が当該連通孔に嵌合されると、配管部材の外周面と連通孔の内周面とが接する接合箇所の周縁についても一平面に含まれるので、溶接において、レーザー光の焦点を合わせるためにレーザーを三次元方向に移動させる必要がなく、一旦レーザー光の焦点を合わせたのちレーザーを当該一平面に沿う二次元方向に移動させるだけでよい。これにより、円筒形状の弁ハウジングの周壁部にレーザー溶接を用いて配管部材をより容易に接合できる。
According to the invention described in claim 2, the peripheral wall portion of the valve housing is formed by distributing a plurality of communication holes that communicate with the inside and outside of the valve housing and are fitted with one end portions of the plurality of piping members. It has a plurality of plane portions. The plurality of piping members are joined to the plurality of planar portions by laser welding in a state where one end portions are fitted into the plurality of communication holes corresponding to the respective piping members. Since it did in this way, since the communicating hole by which the one end part of a piping member is fitted is provided in the plane part, the peripheral edge of a communicating hole is contained in one plane. Therefore, when one end portion of the piping member is fitted into the communication hole, the peripheral edge of the joint where the outer peripheral surface of the piping member and the inner peripheral surface of the communication hole are included in one plane. There is no need to move the laser in the three-dimensional direction in order to focus the light, and it is only necessary to move the laser in the two-dimensional direction along the one plane after the laser light is focused once. Thereby, a piping member can be more easily joined to the surrounding wall part of a cylindrical valve housing using laser welding.
以下、本発明の一実施形態の電磁弁について、図1~図4を参照して説明する。
Hereinafter, an electromagnetic valve according to an embodiment of the present invention will be described with reference to FIGS.
図1は、本発明の一実施形態の電磁弁の縦断面図である。図2(a)は、図1の電磁弁が備えるプランジャチューブの一部分の斜視図であり、(b)は、(a)のX-X線に沿う断面図である。図3(a)は、図2(a)のプランジャチューブに第1継手が嵌合された状態を示す斜視図であり、(b)は、(a)のX-X線に沿う断面図である。図4(a)は、図1の電磁弁が備えるプランジャチューブ及び弁座部材と第1継手及び第2継手の溶接前の状態を示す部分断面図であり、(b)は、溶接後の状態を示す部分断面図である。なお、以下の説明における「上下」の概念は、図1における上下に対応しており、各部材の相対的な位置関係を示すものであって、絶対的な位置関係を示すものではない。
FIG. 1 is a longitudinal sectional view of a solenoid valve according to an embodiment of the present invention. 2A is a perspective view of a part of a plunger tube included in the electromagnetic valve of FIG. 1, and FIG. 2B is a cross-sectional view taken along line XX of FIG. 3A is a perspective view showing a state in which the first joint is fitted to the plunger tube of FIG. 2A, and FIG. 3B is a cross-sectional view taken along line XX of FIG. is there. 4A is a partial cross-sectional view showing a state before the plunger tube and the valve seat member, the first joint, and the second joint of the solenoid valve of FIG. 1 are welded, and FIG. 4B is a state after welding. FIG. In addition, the concept of “upper and lower” in the following description corresponds to the upper and lower sides in FIG. 1 and indicates the relative positional relationship between the members, and does not indicate the absolute positional relationship.
図1に示すように、本実施形態の電磁弁1は、プランジャチューブ10と、プランジャ20と、弁体30と、弁座部材40と、吸引子50と、コイルばね60と、電磁コイル70と、第1継手81と、第2継手82と、第1溶接部91と、第2溶接部92と、を備えている。
As shown in FIG. 1, the electromagnetic valve 1 of the present embodiment includes a plunger tube 10, a plunger 20, a valve body 30, a valve seat member 40, an attractor 50, a coil spring 60, and an electromagnetic coil 70. The 1st joint 81, the 2nd joint 82, the 1st welding part 91, and the 2nd welding part 92 are provided.
プランジャチューブ10は、例えば、オーステナイト系のステンレスなどの非磁性体の金属を材料として円筒状に形成されている。プランジャチューブ10は、その内側に弁室11を形成する。プランジャチューブ10の周壁部12には、図2(a)、(b)に示すように、その一部が平面状に形成された1つの平面部分13が設けられている。この平面部分13の中央部分には、プランジャチューブ10の内外を連通する連通孔14が設けられている。連通孔14は、プランジャチューブ10の内側に向けて突出するバーリング加工がなされている。プランジャチューブ10は、弁ハウジングの一例に相当する。
The plunger tube 10 is formed in a cylindrical shape using a non-magnetic metal such as austenitic stainless steel, for example. The plunger tube 10 forms a valve chamber 11 inside thereof. As shown in FIGS. 2A and 2B, the peripheral wall portion 12 of the plunger tube 10 is provided with one flat portion 13 having a part formed in a flat shape. A communication hole 14 that communicates the inside and the outside of the plunger tube 10 is provided in the central portion of the flat portion 13. The communication hole 14 is subjected to a burring process that protrudes toward the inside of the plunger tube 10. The plunger tube 10 corresponds to an example of a valve housing.
プランジャチューブ10の連通孔14は平面部分13に設けられている。つまり、この連通孔14の周縁は一平面に含まれる。そのため、図3(a)、(b)に示すように、プランジャチューブ10の平面部分13に設けられた連通孔14に後述する第1継手81の一端部が嵌合されると、それらの接合箇所の周縁Sについても一平面に含まれることになる。なお、図3(b)において、説明の便宜上、連通孔14の内周面とプランジャチューブ10の外周面との間に挟まれる後述のチューブ材95は省略している。
The communication hole 14 of the plunger tube 10 is provided in the plane portion 13. That is, the peripheral edge of the communication hole 14 is included in one plane. Therefore, as shown in FIGS. 3A and 3B, when one end portion of the first joint 81 described later is fitted into the communication hole 14 provided in the flat portion 13 of the plunger tube 10, the joints thereof are performed. The peripheral edge S of the location is also included in one plane. In FIG. 3 (b), a tube material 95 to be described later that is sandwiched between the inner peripheral surface of the communication hole 14 and the outer peripheral surface of the plunger tube 10 is omitted for convenience of explanation.
プランジャ20は、例えば、鉄などの磁性体の金属を材料として円柱状に形成されている。プランジャ20は、プランジャチューブ10内にその軸線L方向(図中上下方向)に摺動可能に配設されている。
The plunger 20 is formed in a cylindrical shape using, for example, a magnetic metal such as iron. The plunger 20 is disposed in the plunger tube 10 so as to be slidable in the direction of the axis L (the vertical direction in the drawing).
プランジャ20の下端部には弁体保持部21が形成されている。弁体保持部21は、略円筒形をなしており、その下端の爪部21aは内側に曲げられている。弁体保持部21の内部には、後述する弁体30が軸線L方向に若干の移動を可能として収容されており、爪部21aによって下方への抜けを防いでいる。また、プランジャ20の上端部には、当該プランジャ20を軸線L方向にくり抜いて形成された、後述するコイルばね60を収容するコイルばね収容部22が設けられている。プランジャ20は、その外周面の一部に平面状のDカット面23が形成されている。このDカット面23は、軸線L方向に平行な面を断面としてカットして形成されたものである。
A valve body holding portion 21 is formed at the lower end portion of the plunger 20. The valve body holding part 21 has a substantially cylindrical shape, and a claw part 21a at the lower end thereof is bent inward. A valve body 30 to be described later is accommodated inside the valve body holding portion 21 so as to be slightly movable in the direction of the axis L, and the claw portion 21a prevents the valve body 30 from coming downward. In addition, a coil spring accommodating portion 22 that accommodates a coil spring 60 (described later) formed by hollowing out the plunger 20 in the axis L direction is provided at the upper end portion of the plunger 20. The plunger 20 has a flat D-cut surface 23 formed on a part of its outer peripheral surface. The D-cut surface 23 is formed by cutting a plane parallel to the axis L direction as a cross section.
弁体30は、例えば、金属を材料として球状に形成されている。弁体30は、プランジャ20の弁体保持部21に保持されており、プランジャ20の移動に伴い軸線L方向に移動する。
The valve body 30 is formed in a spherical shape using, for example, a metal as a material. The valve body 30 is held by the valve body holding portion 21 of the plunger 20 and moves in the direction of the axis L as the plunger 20 moves.
弁座部材40は、例えば、オーステナイト系のステンレスなどの金属を材料として構成されている。弁座部材40は、円筒形状の小径部41と、小径部41の下端に連接された円筒形状の大径部42と、大径部の下端に外側に張り出して形成されたフランジ部43と、が一体に設けられている。小径部41の上端には弁ポート44が形成されている。弁座部材40は、プランジャ20内に位置づけられるとともに弁ポート44がプランジャ20に保持された弁体30と相対するように、その軸が軸線Lに重ねられてプランジャチューブ10内に配置されている。また、弁座部材40は、フランジ部43の周縁が、プランジャチューブ10の内周面の下端部に嵌合されるともに溶接により接合されている。
The valve seat member 40 is made of, for example, a metal such as austenitic stainless steel. The valve seat member 40 includes a cylindrical small-diameter portion 41, a cylindrical large-diameter portion 42 connected to the lower end of the small-diameter portion 41, a flange portion 43 formed to protrude outward from the lower end of the large-diameter portion, Are provided integrally. A valve port 44 is formed at the upper end of the small diameter portion 41. The valve seat member 40 is disposed in the plunger tube 10 with its axis superimposed on the axis L so that the valve seat member 40 is positioned in the plunger 20 and the valve port 44 faces the valve body 30 held by the plunger 20. . Further, the valve seat member 40 is joined by welding while the peripheral edge of the flange portion 43 is fitted to the lower end portion of the inner peripheral surface of the plunger tube 10.
吸引子50は、例えば、鉄などの磁性体の金属を材料として円柱状に形成されている。吸引子50は、プランジャチューブ10の上端部に一部が挿入され、当該上端部の周縁と吸引子50の外周面における当該周縁に接触する部分とをレーザー溶接により接合することによって取り付けられている。
The attractor 50 is formed in a cylindrical shape using, for example, a magnetic metal such as iron. Part of the suction element 50 is inserted into the upper end portion of the plunger tube 10 and is attached by joining the periphery of the upper end part and the portion of the outer peripheral surface of the suction element 50 that contacts the periphery by laser welding. .
コイルばね60は、図中下方の端部がプランジャ20に形成されたコイルばね収容部22の底部に突き当てられ、図中上方の端部が吸引子50の下面に突き当てられて、圧縮状態で配置されている。コイルばね60は、プランジャ20が吸引子50によって吸引されていないときに弁体30によって弁ポート44が塞がれるように、プランジャ20を図中下方に向けて押圧している。
The coil spring 60 has a lower end abutted against the bottom of the coil spring accommodating portion 22 formed on the plunger 20, and an upper end abutted against the lower surface of the attractor 50 in the compressed state. Is arranged in. The coil spring 60 presses the plunger 20 downward in the figure so that the valve port 44 is closed by the valve body 30 when the plunger 20 is not sucked by the suction element 50.
電磁コイル70は、導線が巻き付けられた円筒状のボビンを樹脂により封止して構成されたコイル体71と、コイル体71を収容する外函72と、を有している。電磁コイル70は、コイル体71の内側にプランジャチューブ10の一部と吸引子50とが収容されるように配置されており、外函72がネジNにより吸引子50にネジ止めされている。電磁コイル70は、通電されることにより磁力を発して吸引子50を磁化し、これにより、プランジャ20が吸引子50の磁力によって吸引されて図中上方に移動される。
The electromagnetic coil 70 has a coil body 71 configured by sealing a cylindrical bobbin around which a conducting wire is wound with a resin, and an outer box 72 that houses the coil body 71. The electromagnetic coil 70 is arranged inside the coil body 71 so that a part of the plunger tube 10 and the attractor 50 are accommodated, and the outer box 72 is screwed to the attractor 50 with a screw N. When energized, the electromagnetic coil 70 generates a magnetic force to magnetize the attractor 50, whereby the plunger 20 is attracted by the magnetic force of the attractor 50 and moved upward in the figure.
第1継手81は、例えば、銅などの金属を材料として管状に形成されている。第1継手81は、その一端部がプランジャチューブ10の連通孔14に嵌合され、溶接により接合されている。第1継手81とプランジャチューブ10の周壁部12の平面部分13との間には、それらを互いに接合する第1溶接部91が設けられている。第1継手81は、配管部材の一例に相当する。
The first joint 81 is formed in a tubular shape using, for example, a metal such as copper. One end of the first joint 81 is fitted into the communication hole 14 of the plunger tube 10 and joined by welding. Between the 1st coupling 81 and the plane part 13 of the surrounding wall part 12 of the plunger tube 10, the 1st welding part 91 which joins them mutually is provided. The first joint 81 corresponds to an example of a piping member.
第2継手82は、例えば、銅などの金属を材料として管状に形成されている。第2継手82は、その一端部が弁座部材40の大径部42内側に嵌合され、溶接により接合されている。第2継手82と弁座部材40の大径部42との間には、それらを互いに接合する第2溶接部92が設けられている。
The second joint 82 is formed in a tubular shape using, for example, a metal such as copper. One end of the second joint 82 is fitted inside the large-diameter portion 42 of the valve seat member 40 and is joined by welding. Between the 2nd coupling 82 and the large diameter part 42 of the valve seat member 40, the 2nd welding part 92 which joins them mutually is provided.
第1溶接部91は、プランジャチューブ10の平面部分13と第1継手81との間で、プランジャチューブ10を構成するステンレスと、第1継手81を構成する銅と、ニッケル(Ni)と、がそれぞれレーザー溶接により溶融されて混ざり合ったのち固化された部位である。この第1溶接部91を介して、プランジャチューブ10と第1継手81とが互いに接合されている。
The first welding portion 91 includes stainless steel constituting the plunger tube 10, copper constituting the first joint 81, and nickel (Ni) between the planar portion 13 of the plunger tube 10 and the first joint 81. Each is a portion that has been melted by laser welding, mixed and then solidified. The plunger tube 10 and the first joint 81 are joined to each other through the first welded portion 91.
第2溶接部92は、弁座部材40の大径部42と第2継手82との間で、弁座部材40の大径部42を構成するステンレスと、第2継手82を構成する銅と、ニッケル(Ni)と、がそれぞれレーザー溶接により溶融されて混ざり合ったのち固化された部位である。この第2溶接部92を介して、弁座部材40と第2継手82とが互いに接合されている。
The second welded portion 92 includes stainless steel constituting the large diameter portion 42 of the valve seat member 40 and copper constituting the second joint 82 between the large diameter portion 42 of the valve seat member 40 and the second joint 82. Nickel (Ni) is a portion that is solidified after being melted and mixed by laser welding. The valve seat member 40 and the second joint 82 are joined to each other through the second welded portion 92.
電磁弁1は、以上の構成を有することにより、電磁コイル70に通電されていない非通電状態では、電磁コイル70が磁力を発生していないため吸引子50が磁化されず、コイルばね60の押圧力により、プランジャ20が吸引子50から離れた位置となる。このとき、弁体30は弁座部材40に着座されて弁閉状態となる。
Since the solenoid valve 1 has the above-described configuration, in the non-energized state where the electromagnetic coil 70 is not energized, the attractor 50 is not magnetized because the electromagnetic coil 70 does not generate a magnetic force, and the coil spring 60 is pressed. Due to the pressure, the plunger 20 is positioned away from the suction element 50. At this time, the valve body 30 is seated on the valve seat member 40 and is in a valve-closed state.
そして、電磁コイル70に通電されている通電状態では、電磁コイル70が磁力を発生しているため吸引子50が磁化されて、コイルばね60の押圧力に抗して吸引子50の発する磁力によりプランジャ20が吸引子50に接した位置となる。このとき、弁体30は弁座部材40から離座されて弁開状態となる。
In the energized state where the electromagnetic coil 70 is energized, the attractor 50 is magnetized because the electromagnetic coil 70 generates a magnetic force, and the magnetic force generated by the attractor 50 against the pressing force of the coil spring 60 is applied. The plunger 20 is in a position in contact with the suction element 50. At this time, the valve body 30 is separated from the valve seat member 40 and is in a valve open state.
次に、上述した電磁弁1の製造方法の一例について、図4(a)、(b)を参照して説明する。
Next, an example of a method for manufacturing the above-described electromagnetic valve 1 will be described with reference to FIGS. 4 (a) and 4 (b).
(1:溶接工程)
プランジャチューブ10には弁座部材40が溶接により予め接合されている。そして、図4(a)に示すように、プランジャチューブ10の連通孔14に第1継手81の一端部を挿入して嵌合し、プランジャチューブ10の連通孔14の内周面と第1継手81の外周面との間に、厚みが0.1mm~0.5mm程度のニッケル(Ni)製のチューブ材95を圧入する。または、先にチューブ材95をプランジャチューブ10の連通孔14に嵌め合わせた後、チューブ材95の内側に第1継手81の一端部を圧入して嵌合してもよい。つまり、プランジャチューブ10の連通孔14に第1継手81が嵌合され、プランジャチューブ10と第1継手81との間にチューブ材95が挟まれている。 (1: Welding process)
Avalve seat member 40 is joined to the plunger tube 10 in advance by welding. 4A, one end portion of the first joint 81 is inserted and fitted into the communication hole 14 of the plunger tube 10, and the inner peripheral surface of the communication hole 14 of the plunger tube 10 and the first joint. A tube material 95 made of nickel (Ni) having a thickness of about 0.1 mm to 0.5 mm is press-fitted between the outer peripheral surface of 81. Alternatively, after fitting the tube material 95 into the communication hole 14 of the plunger tube 10 first, one end portion of the first joint 81 may be press-fitted inside the tube material 95 and fitted. That is, the first joint 81 is fitted into the communication hole 14 of the plunger tube 10, and the tube material 95 is sandwiched between the plunger tube 10 and the first joint 81.
プランジャチューブ10には弁座部材40が溶接により予め接合されている。そして、図4(a)に示すように、プランジャチューブ10の連通孔14に第1継手81の一端部を挿入して嵌合し、プランジャチューブ10の連通孔14の内周面と第1継手81の外周面との間に、厚みが0.1mm~0.5mm程度のニッケル(Ni)製のチューブ材95を圧入する。または、先にチューブ材95をプランジャチューブ10の連通孔14に嵌め合わせた後、チューブ材95の内側に第1継手81の一端部を圧入して嵌合してもよい。つまり、プランジャチューブ10の連通孔14に第1継手81が嵌合され、プランジャチューブ10と第1継手81との間にチューブ材95が挟まれている。 (1: Welding process)
A
次に、プランジャチューブ10の外側から連通孔14の周方向に沿うように全周にわたって、連通孔14の内周面部分(即ち、プランジャチューブ10の周壁部)、チューブ材95及び第1継手81の外周面部分が同時に溶融するようにレーザーLを照射した後、照射を停止する。これにより、図4(b)に示すように、プランジャチューブ10の連通孔14の内周面部分を構成するステンレス、チューブ材95を構成するニッケル及び第1継手81を構成する銅が、それぞれ溶融されて混ざり合ったのち固化されて、プランジャチューブ10と第1継手81との間に連通孔14の全周にわたって、第1溶接部91が形成される。この第1溶接部91によって、プランジャチューブ10と第1継手81とが互いに接合される。
Next, the inner peripheral surface portion of the communication hole 14 (that is, the peripheral wall portion of the plunger tube 10), the tube material 95, and the first joint 81 are extended from the outside of the plunger tube 10 along the circumferential direction of the communication hole 14. Irradiation is stopped after irradiating the laser L so that the outer peripheral surface portions of the two melt simultaneously. As a result, as shown in FIG. 4B, the stainless steel constituting the inner peripheral surface portion of the communication hole 14 of the plunger tube 10, the nickel constituting the tube material 95, and the copper constituting the first joint 81 are melted. The first welded portion 91 is formed over the entire circumference of the communication hole 14 between the plunger tube 10 and the first joint 81 after being mixed and solidified. The plunger tube 10 and the first joint 81 are joined to each other by the first welded portion 91.
また、図4(a)に示すように、弁座部材40の大径部42に第2継手82の一端部を挿入して嵌合し、弁座部材40の大径部42の内周面と第2継手82の外周面との間に、厚みが0.1mm~0.5mm程度のニッケル(Ni)製のチューブ材96を圧入する。または、先にチューブ材96を弁座部材40の大径部42に嵌め合わせたのち、チューブ材96の内側に第2継手82を圧入して嵌合してもよい。つまり、弁座部材40の大径部42に第2継手82が嵌合され、弁座部材40の大径部42と第2継手82との間にチューブ材96が挟まれている。
Further, as shown in FIG. 4A, one end portion of the second joint 82 is inserted and fitted into the large diameter portion 42 of the valve seat member 40, and the inner peripheral surface of the large diameter portion 42 of the valve seat member 40. And a tube member 96 made of nickel (Ni) having a thickness of about 0.1 mm to 0.5 mm is press-fitted between the first joint 82 and the outer peripheral surface of the second joint 82. Or after fitting the tube material 96 to the large diameter part 42 of the valve seat member 40 first, you may press-fit the 2nd coupling 82 inside the tube material 96, and may be fitted. That is, the second joint 82 is fitted to the large diameter portion 42 of the valve seat member 40, and the tube material 96 is sandwiched between the large diameter portion 42 of the valve seat member 40 and the second joint 82.
次に、弁座部材40の外側から大径部42の内周面の周方向に沿うように全周にわたって、大径部42の内周面部分(即ち、弁座部材40)、チューブ材96及び第2継手82の外周面部分が同時に溶融するようにレーザーLを照射した後、照射を停止する。これにより、図4(b)に示すように、弁座部材40の大径部42を構成するステンレス、チューブ材96を構成するニッケル及び第2継手82を構成する銅が、それぞれ溶融されて混ざり合ったのち固化されて、弁座部材40と第2継手82との間に大径部42の内周面の全周にわたって第2溶接部92が形成される。この第2溶接部92によって、弁座部材40と第2継手82とが互いに接合される。
Next, the inner peripheral surface portion of the large-diameter portion 42 (that is, the valve seat member 40) and the tube member 96 are extended over the entire circumference from the outside of the valve seat member 40 along the circumferential direction of the inner peripheral surface of the large-diameter portion 42. And after irradiating the laser L so that the outer peripheral surface part of the 2nd joint 82 may fuse | melt simultaneously, irradiation is stopped. Thereby, as shown in FIG. 4B, the stainless steel constituting the large-diameter portion 42 of the valve seat member 40, the nickel constituting the tube member 96, and the copper constituting the second joint 82 are respectively melted and mixed. After being combined, the second welded portion 92 is formed over the entire inner peripheral surface of the large-diameter portion 42 between the valve seat member 40 and the second joint 82. The valve seat member 40 and the second joint 82 are joined to each other by the second welded portion 92.
(2:組立工程)
次に、プランジャチューブ10に、弁体30を保持したプランジャ20を挿入したのち、プランジャ20のコイルばね収容部22にコイルばね60の一部を収容する。それから、プランジャチューブ10の上端部に吸引子50の一部を挿入し、プランジャチューブ10上端部の周縁と吸引子50の外周面における当該周縁に接触する部分とをレーザー溶接により接合して互いに取り付ける。そして、電磁コイル70のコイル体71の内側に、互いに固定されたプランジャチューブ10及び吸引子50を挿入するとともに、電磁コイル70の外函72をネジNによって吸引子50にネジ止めにより固定して取り付ける。これら溶接工程及び組立工程を順次経て、電磁弁1が完成する。 (2: Assembly process)
Next, after inserting theplunger 20 holding the valve body 30 into the plunger tube 10, a part of the coil spring 60 is accommodated in the coil spring accommodating portion 22 of the plunger 20. Then, a part of the suction element 50 is inserted into the upper end portion of the plunger tube 10, and the peripheral edge of the upper end portion of the plunger tube 10 and the portion in contact with the peripheral edge of the outer peripheral surface of the suction element 50 are joined and attached to each other by laser welding. . Then, the plunger tube 10 and the attractor 50 fixed to each other are inserted inside the coil body 71 of the electromagnetic coil 70, and the outer box 72 of the electromagnetic coil 70 is fixed to the attractor 50 with screws N by screwing. Install. The solenoid valve 1 is completed through these welding steps and assembly steps in sequence.
次に、プランジャチューブ10に、弁体30を保持したプランジャ20を挿入したのち、プランジャ20のコイルばね収容部22にコイルばね60の一部を収容する。それから、プランジャチューブ10の上端部に吸引子50の一部を挿入し、プランジャチューブ10上端部の周縁と吸引子50の外周面における当該周縁に接触する部分とをレーザー溶接により接合して互いに取り付ける。そして、電磁コイル70のコイル体71の内側に、互いに固定されたプランジャチューブ10及び吸引子50を挿入するとともに、電磁コイル70の外函72をネジNによって吸引子50にネジ止めにより固定して取り付ける。これら溶接工程及び組立工程を順次経て、電磁弁1が完成する。 (2: Assembly process)
Next, after inserting the
以上より、本実施形態の電磁弁1によれば、プランジャチューブ10の周壁部12が、プランジャチューブ10の内外を連通しかつ第1継手81の一端部が嵌合される連通孔14が形成された1つの平面部分13を有している。そして、第1継手81が、それに対応する連通孔14に一端部を嵌合された状態で平面部分13にレーザー溶接により接合されている。このようにしたことから、第1継手81の一端部が嵌合される連通孔14が平面部分13に設けられているので、連通孔14の周縁が一平面に含まれることになる。そのため、第1継手81の一端部が当該連通孔14に嵌合されると、第1継手の外周面と連通孔14の内周面とが接する接合箇所の周縁Sについても一平面に含まれるので、溶接において、レーザー光の焦点を合わせるためにレーザーを三次元方向に移動させる必要がなく、一旦レーザー光の焦点を合わせたのちレーザーを当該一平面に沿う二次元方向に移動させるだけでよい。これにより、円筒形状のプランジャチューブ10の周壁部12にレーザー溶接を用いて第1継手81をより容易に接合できる。
As described above, according to the electromagnetic valve 1 of the present embodiment, the communication hole 14 is formed in which the peripheral wall portion 12 of the plunger tube 10 communicates with the inside and outside of the plunger tube 10 and one end of the first joint 81 is fitted. It has only one plane part 13. And the 1st coupling 81 is joined to the plane part 13 by laser welding in the state by which the one end part was fitted by the communication hole 14 corresponding to it. Since it did in this way, since the communicating hole 14 with which the one end part of the 1st coupling 81 is fitted is provided in the plane part 13, the periphery of the communicating hole 14 is contained in one plane. Therefore, when one end portion of the first joint 81 is fitted into the communication hole 14, the peripheral edge S of the joint portion where the outer peripheral surface of the first joint and the inner peripheral surface of the communication hole 14 come into contact with each other is also included in one plane. Therefore, in welding, it is not necessary to move the laser in the three-dimensional direction in order to focus the laser beam, and it is only necessary to move the laser in the two-dimensional direction along the one plane after focusing the laser beam once. . Thereby, the 1st coupling 81 can be joined more easily to the surrounding wall part 12 of the cylindrical plunger tube 10 using laser welding.
また、電磁弁1において、プランジャチューブ10と第1継手81との間、及び、弁座部材40と第2継手82との間に、ステンレスと、銅と、これらと溶接により混ざり合うニッケルとのそれぞれがレーザー溶接により溶融固化されて形成された第1溶接部91及び第2溶接部92が設けられ、プランジャチューブ10と第1継手81とが第1溶接部91を介して互いに接合され、弁座部材40と第2継手82とが、第2溶接部92を介して互いに接合されている。このようにしたことから、ステンレスと銅とを直接溶接した構成に比べて、ステンレス及び銅と溶接により混ざり合うニッケルを介在することによりステンレスと銅とが互いに混ざり合うので、ステンレスと銅とが混ざり合わずに分離した状態で固まってしまうことを抑制することができる。そのため、ステンレスと銅とが混ざり合わないことにより発生する内部クラックなどの溶接不良を抑制することができる。これにより、レーザー溶接により形成された第1溶接部91及び第2溶接部92によってステンレス製のプランジャチューブ10及び弁座部材40と銅製の第1継手81及び第2継手82との溶接による接合箇所の接合強度を効果的に確保できる。
Further, in the solenoid valve 1, between the plunger tube 10 and the first joint 81 and between the valve seat member 40 and the second joint 82, stainless steel, copper, and nickel mixed with each other by welding. A first welded portion 91 and a second welded portion 92, each formed by melting and solidifying by laser welding, are provided, and the plunger tube 10 and the first joint 81 are joined to each other via the first welded portion 91, and the valve The seat member 40 and the second joint 82 are joined to each other via the second welded portion 92. Since stainless steel and copper are mixed with each other by interposing nickel mixed with stainless steel and copper by welding compared to a configuration in which stainless steel and copper are directly welded, stainless steel and copper are mixed. It is possible to suppress solidification in a separated state without matching. Therefore, poor welding such as internal cracks that occur when stainless steel and copper are not mixed can be suppressed. Thereby, the joining location by welding of the plunger tube 10 and the valve seat member 40 made of stainless steel and the first joint 81 and the second joint 82 made of copper by the first welded portion 91 and the second welded portion 92 formed by laser welding. The joint strength can be effectively secured.
以上、本発明について、好ましい実施形態を挙げて説明したが、本発明の弁装置はこれらの実施形態の構成に限定されるものではない。
As mentioned above, although this invention was mentioned and mentioned with preferable embodiment, the valve apparatus of this invention is not limited to the structure of these embodiment.
例えば、上述した実施形態では、円筒形状のプランジャチューブ10の周壁部12に、1つの平面部分13が設けられ、この平面部分13に1つの連通孔14が形成された構成であったが、これに限定されるものではない。ここで、図5(a)、(b)に、上述した実施形態の電磁弁の変形例の構成を示す。図5(a)は、図1の電磁弁の第1の変形例の構成を示す斜視図であり(1つの平面部分に複数の連通孔が形成された構成)、(b)は、図1の電磁弁の第2の変形例の構成を示す斜視図である(複数の平面部分のそれぞれに1つの連通孔が形成された構成)。
For example, in the above-described embodiment, one planar portion 13 is provided on the peripheral wall portion 12 of the cylindrical plunger tube 10, and one communication hole 14 is formed in the planar portion 13. It is not limited to. Here, the structure of the modification of the solenoid valve of embodiment mentioned above to FIG. 5 (a), (b) is shown. FIG. 5A is a perspective view showing a configuration of a first modification of the solenoid valve of FIG. 1 (a configuration in which a plurality of communication holes are formed in one plane portion), and FIG. It is a perspective view which shows the structure of the 2nd modification of this solenoid valve (structure by which one communicating hole was formed in each of several plane parts).
例えば、図5(a)に示すように、プランジャチューブ10Aの周壁部12Aに、1つの平面部分13Aが設けられ、この平面部分13Aに複数の連通孔14A、14Bが形成されて、これら連通孔14A、14Bのそれぞれに継手81A、81Bが嵌合されてレーザー溶接により接合された構成を有する電磁弁2としてもよい。つまり、プランジャチューブ10Aの周壁部12Aが、プランジャチューブ10Aの内外を連通しかつ複数の継手81A、81Bの一端部が嵌合される複数の連通孔14A、14Bが形成された1つの平面部分13Aを有している。そして、複数の継手81A、81Bが、それぞれに対応する複数の連通孔14A、14Bに一端部を嵌合された状態で平面部分13Aにレーザー溶接により接合されている。このような構成としてもよい。
For example, as shown in FIG. 5A, the planar wall 13A of the plunger tube 10A is provided with one flat surface portion 13A, and a plurality of communication holes 14A and 14B are formed in the flat surface portion 13A. It is good also as the solenoid valve 2 which has the structure by which coupling 81A, 81B was fitted by each of 14A, 14B, and was joined by laser welding. That is, one planar portion 13A in which the peripheral wall portion 12A of the plunger tube 10A communicates the inside and outside of the plunger tube 10A and a plurality of communication holes 14A, 14B into which one end portions of the plurality of joints 81A, 81B are fitted is formed. have. A plurality of joints 81A and 81B are joined to the plane portion 13A by laser welding in a state in which one end is fitted to the corresponding communication holes 14A and 14B. Such a configuration may be adopted.
または、例えば、図5(b)に示すように、プランジャチューブ10Cの周壁部12Cに、複数の平面部分13C、13Dが設けられ、それぞれに連通孔14C、14Dが形成されて、これら連通孔14C、14Dのそれぞれに継手81C、81Dが嵌合されてレーザー溶接により接合された構成を有する電磁弁3としてもよい。つまり、プランジャチューブ10Cの周壁部12Cが、プランジャチューブ10Cの内外を連通しかつ複数の継手81C、81Dの一端部が嵌合される複数の連通孔14C、14Dが振り分けられて形成された複数の平面部分13C、13Dを有している。そして、複数の継手81C、81Dが、それぞれに対応する複数の連通孔14C、14Dに一端部を嵌合された状態で複数の平面部分13C、13Dにレーザー溶接により接合されている。このような構成としてもよい。
Alternatively, for example, as shown in FIG. 5B, the peripheral wall portion 12C of the plunger tube 10C is provided with a plurality of plane portions 13C, 13D, and communication holes 14C, 14D are formed in the respective plane portions 13C, 14D. , 14D may be a solenoid valve 3 having a configuration in which joints 81C and 81D are fitted and joined by laser welding. In other words, the peripheral wall portion 12C of the plunger tube 10C communicates with the inside and outside of the plunger tube 10C, and a plurality of communication holes 14C and 14D into which one end portions of the plurality of joints 81C and 81D are fitted are distributed. It has plane portions 13C and 13D. A plurality of joints 81C and 81D are joined to the plurality of planar portions 13C and 13D by laser welding in a state where one end is fitted to the corresponding communication holes 14C and 14D, respectively. Such a configuration may be adopted.
図5(a)、(b)に示すような構成としても、上述した実施形態と同様の効果を得ることができる。即ち、継手の一端部が嵌合される連通孔が平面部分に設けられているので、連通孔の周縁が一平面に含まれることになる。そのため、継手の一端部が当該連通孔に嵌合されると、継手の外周面と連通孔の内周面とが接する接合箇所の周縁についても一平面に含まれるので、溶接において、レーザー光の焦点を合わせるためにレーザーを三次元方向に移動させる必要がなく、一旦レーザー光の焦点を合わせたのちレーザーを当該一平面に沿う二次元方向に移動させるだけでよい。これにより、円筒形状のプランジャチューブの周壁部にレーザー溶接を用いて継手をより容易に接合できる。
Even with the configuration as shown in FIGS. 5A and 5B, the same effects as those of the above-described embodiment can be obtained. That is, the communication hole into which one end of the joint is fitted is provided in the flat surface portion, so that the peripheral edge of the communication hole is included in one flat surface. For this reason, when one end of the joint is fitted into the communication hole, the peripheral edge of the joint where the outer peripheral surface of the joint and the inner peripheral surface of the communication hole come into contact with each other is included in one plane. There is no need to move the laser in the three-dimensional direction in order to adjust the focus, and it is only necessary to move the laser in the two-dimensional direction along the one plane after focusing the laser beam once. Thereby, a joint can be more easily joined to the surrounding wall part of a cylindrical plunger tube using laser welding.
または、例えば、図6(a)に示すように、プランジャチューブ10Eが、角筒形状に形成された周壁部12Eを備え、周壁部12Eにおける軸方向(図中上下方向)に延在する稜線Rを当該軸方向に分ける(分断する)ように平面部分13Eが設けられ、当該平面部分13Eに形成された連通孔14Eに継手81Eが嵌合されてレーザー溶接により接合された構成を有する電磁弁4が参考例として考えられる。つまり、角筒形状のプランジャチューブ10Eの周壁部が12E、プランジャチューブ10Eの内外を連通しかつ1の継手81Eの一端部が嵌合される1の連通孔14Eが形成された1つの平面部分13Eを有している。この平面部分13Eが、プランジャチューブ10Eの周壁部12Eにおける稜線Rについて該稜線Rの延在方向に並ぶように配設され、継手81Eが、それに対応する連通孔14Eに一端部を嵌合された状態で平面部分13Eにレーザー溶接により接合されている。
Alternatively, for example, as shown in FIG. 6A, the plunger tube 10E includes a peripheral wall portion 12E formed in a rectangular tube shape, and a ridge line R extending in the axial direction (vertical direction in the drawing) of the peripheral wall portion 12E. Is provided with a plane portion 13E so as to be divided (divided) in the axial direction, and a joint 81E is fitted into a communication hole 14E formed in the plane portion 13E and joined by laser welding. Is considered as a reference example. In other words, the peripheral wall portion of the square tube-shaped plunger tube 10E is 12E, and one flat portion 13E in which one communication hole 14E is formed which communicates the inside and outside of the plunger tube 10E and one end of one joint 81E is fitted. have. The planar portion 13E is arranged so that the ridgeline R in the peripheral wall portion 12E of the plunger tube 10E is arranged in the extending direction of the ridgeline R, and one end of the joint 81E is fitted into the corresponding communication hole 14E. In the state, it is joined to the flat portion 13E by laser welding.
または、例えば、図6(b)に示すように、プランジャチューブ10Fが、角筒形状に形成された周壁部12Fを備え、周壁部12Fにおける軸方向(図中上下方向)に延在する稜線Rを当該軸方向に並ぶように平面部分13Fが設けられ、当該平面部分13Fに形成された連通孔14F、14Gに継手81F、81Gが嵌合されてレーザー溶接により接合された構成を有する電磁弁5が参考例として考えられる。つまり、プランジャチューブ10Fの周壁部12Fが、プランジャチューブ10Fの内外を連通しかつ複数の継手81F、81Gの一端部が嵌合される複数の連通孔14F、14Gが形成された1つの平面部分13Fを有している。この平面部分13Fが、プランジャチューブ10Fの周壁部12Fにおける稜線Rについて該稜線Rの延在方向に並ぶように配設され、複数の継手81F、81Gが、それぞれに対応する複数の連通孔14F、14Gに一端部を嵌合された状態で平面部分13Fにレーザー溶接により接合されている。
Alternatively, for example, as illustrated in FIG. 6B, the plunger tube 10 </ b> F includes a peripheral wall portion 12 </ b> F formed in a rectangular tube shape, and a ridgeline R extending in the axial direction (vertical direction in the drawing) of the peripheral wall portion 12 </ b> F. Are arranged in the axial direction, and a solenoid valve 5 having a configuration in which joints 81F and 81G are fitted into communication holes 14F and 14G formed in the plane portion 13F and joined by laser welding. Is considered as a reference example. That is, the peripheral wall portion 12F of the plunger tube 10F communicates the inside and outside of the plunger tube 10F, and one planar portion 13F in which a plurality of communication holes 14F and 14G are formed into which one end portions of the plurality of joints 81F and 81G are fitted. have. The planar portion 13F is arranged so as to be aligned in the extending direction of the ridgeline R with respect to the ridgeline R in the peripheral wall portion 12F of the plunger tube 10F, and the plurality of joints 81F and 81G include a plurality of communication holes 14F, It is joined to the flat portion 13F by laser welding with one end fitted to 14G.
または、例えば、図6(c)に示すように、プランジャチューブ10Hが、角筒形状に形成された周壁部12Hを備え、周壁部12Hにおける軸方向(図中上下方向)に延在する稜線Rを当該軸方向に分ける(分断する)ように平面部分13H、13Jが設けられ、当該平面部分13H、13Jに形成された連通孔14H、14Jに継手81H、81Jが嵌合されてレーザー溶接により接合された構成を有する電磁弁6が参考例として考えられる。つまり、プランジャチューブ10Hの周壁部12Hが、プランジャチューブ10Hの内外を連通しかつ複数の継手81H、81Jの一端部が嵌合される複数の連通孔14H、14Jが振り分けられて形成された複数の平面部分13H、13Jを有している。複数の平面部分13H、13Jが、プランジャチューブ10Hの周壁部12Hにおける稜線Rについて該稜線Rの延在方向に並ぶように配設され、複数の継手81H、81Jが、それぞれに対応する複数の連通孔14H、14Jに一端部を嵌合された状態で複数の平面部分13H、13Jにレーザー溶接により接合されている。
Alternatively, for example, as shown in FIG. 6C, the plunger tube 10H includes a peripheral wall portion 12H formed in a rectangular tube shape, and a ridge line R extending in the axial direction (vertical direction in the drawing) of the peripheral wall portion 12H. Plane portions 13H and 13J are provided so as to divide (separate) them in the axial direction, and joints 81H and 81J are fitted into communication holes 14H and 14J formed in the plane portions 13H and 13J and joined by laser welding. A solenoid valve 6 having the above-described configuration is considered as a reference example. That is, the peripheral wall portion 12H of the plunger tube 10H communicates with the inside and outside of the plunger tube 10H, and a plurality of communication holes 14H and 14J into which one end portions of the plurality of joints 81H and 81J are fitted are distributed. It has plane portions 13H and 13J. The plurality of flat portions 13H and 13J are arranged so as to be aligned in the extending direction of the ridgeline R with respect to the ridgeline R in the peripheral wall portion 12H of the plunger tube 10H, and the plurality of joints 81H and 81J are respectively connected to the plurality of communication portions. The holes 14H and 14J are joined to the plurality of flat portions 13H and 13J by laser welding in a state where one end is fitted.
図6(a)~(c)に示すような構成としても、上述した実施形態と同様の効果を得ることができる。即ち、プランジャチューブの周壁部における稜線が延在していた部分について当該稜線を無くして平面状にした平面部分が配設され、そして、当該平面部分に継手の一端部が嵌合される連通孔が設けられているので、連通孔の周縁が一平面に含まれることになる。そのため、継手の一端部が当該連通孔に嵌合されると、継手の外周面と連通孔の内周面とが接する接合箇所の周縁についても一平面に含まれるので、溶接において、レーザー光の焦点を合わせるためにレーザーを三次元方向に移動させる必要がなく、一旦レーザー光の焦点を合わせたのちレーザーを当該一平面に沿う二次元方向に移動させるだけでよい。これにより、角筒形状のプランジャチューブの周壁部にレーザー溶接を用いて継手をより容易に接合できる。
6A to 6C can obtain the same effects as those of the above-described embodiment. That is, a communication hole in which a flat portion that is flattened by eliminating the ridgeline is disposed in a portion where the ridgeline in the peripheral wall portion of the plunger tube extends, and one end portion of the joint is fitted to the flat portion. Therefore, the peripheral edge of the communication hole is included in one plane. For this reason, when one end of the joint is fitted into the communication hole, the peripheral edge of the joint where the outer peripheral surface of the joint and the inner peripheral surface of the communication hole come into contact with each other is included in one plane. There is no need to move the laser in the three-dimensional direction in order to adjust the focus, and it is only necessary to move the laser in the two-dimensional direction along the one plane after focusing the laser beam once. Thereby, a joint can be more easily joined to the peripheral wall part of a square tube-shaped plunger tube using laser welding.
また、上述した実施形態において、各継手の溶接にニッケルからなるチューブ材を用いていたが、これに限定されるものではない。例えば、プランジャチューブ及び弁座部材と各継手とが、それぞれ同一種類の金属を材料として構成されているなど、溶接不良がおきにくい金属の組み合わせである場合、上述したようなチューブ材を用いることなく、プランジャチューブ及び弁座部材と各継手とを直接レーザー溶接により接合する構成としてもよい。
Further, in the above-described embodiment, the tube material made of nickel is used for welding of each joint, but is not limited to this. For example, when the plunger tube and valve seat member and each joint are made of the same kind of metal, such as a combination of metals that are unlikely to cause poor welding, the tube material as described above is not used. The plunger tube, the valve seat member, and each joint may be directly joined by laser welding.
また、上述した実施形態において、プランジャチューブ及び弁座部材と各継手との間に挟む金属材であるチューブ材として、ニッケルを材料として構成されたものを用いていたが、これに限定されるものではない。このような金属材を構成する材料として、ステンレス及び銅と溶接により混ざり合う金属であればよく、その材料となる金属の種類は任意である。金属材を構成する材料として、特にニッケル、リチウム、ビスマス、金及び白金の中から選択される1つの金属を主成分(重量比で50%超含む)とするものあることが好ましく、これら金属を用いることにより、溶接性を高めて溶接不良を抑制することができる。または、金属材を構成する材料として、りん銅ろう、銀ろう又はニッケルろうを用いてもよい。リン銅ろう(JISZ3264)は、銅に5%~8%程度のリンを添加してなるろう材である。銀ろうは(JISZ3261)は、銀、銅、亜鉛を高い割合で含むろう材であり、用途により、カドミウム、錫、ニッケルなどが添加されることがある。ニッケルろう(JISZ3265)は、ニッケルを主成分として含むろう材であり、クロムやホウ素、珪素などが添加されている。
In the above-described embodiment, the tube material, which is a metal material sandwiched between the plunger tube and the valve seat member and each joint, is made of nickel, but is not limited thereto. is not. As a material constituting such a metal material, any metal can be used as long as it is a metal that is mixed with stainless steel and copper by welding, and the type of the metal used as the material is arbitrary. As a material constituting the metal material, it is particularly preferable that one material selected from nickel, lithium, bismuth, gold and platinum is a main component (including more than 50% by weight). By using it, weldability can be improved and poor welding can be suppressed. Alternatively, phosphor copper brazing, silver brazing, or nickel brazing may be used as a material constituting the metal material. Phosphor copper brazing (JISZ3264) is a brazing material obtained by adding about 5% to 8% phosphorus to copper. Silver brazing (JISZ3261) is a brazing material containing silver, copper, and zinc in a high ratio, and cadmium, tin, nickel, and the like may be added depending on applications. Nickel brazing (JISZ3265) is a brazing material containing nickel as a main component, to which chromium, boron, silicon, or the like is added.
また、上述した実施形態において、第1継手及び第2継手等が、純銅を材料として構成されていたが、これに限定されるものではない。このような配管部材の材料として、銅又は銅を主成分(重量比で50%超含む)とする銅合金であればよい。配管部材の材料として、特に、純銅、無酸素銅、タフピッチ銅、リン脱酸銅及びアルミニウム青銅の中から選択される1つの銅(銅合金を含む)であることが好ましい。
In the above-described embodiment, the first joint, the second joint, and the like are made of pure copper, but the present invention is not limited to this. As a material of such a piping member, copper or a copper alloy containing copper as a main component (including more than 50% by weight) may be used. The material of the piping member is particularly preferably one copper (including a copper alloy) selected from pure copper, oxygen-free copper, tough pitch copper, phosphorus deoxidized copper and aluminum bronze.
また、上述した各実施形態において、第1継手及び第2継手等の外周面におけるプランジャチューブ又は弁座部材と溶接により接合される箇所には、ニッケルメッキ層又はニッケル系部材が溶融付着されたニッケル付着部が設けられていてもよい。このようにすることで、弁ハウジング及び弁座部材と各継手との溶接性をさらに高めることができる。
Moreover, in each embodiment mentioned above, the nickel plating layer or the nickel-type member melt-adhered to the location where it joins with the plunger tube or the valve seat member in outer peripheral surfaces, such as a 1st joint and a 2nd joint, by welding An adhesion part may be provided. By doing in this way, the weldability of a valve housing and a valve seat member, and each joint can further be improved.
なお、前述した実施形態は本発明の代表的な形態を示したに過ぎず、本発明は、実施形態に限定されるものではない。本発明の実施形態の例として上述した電磁弁を示したが、本発明は他の様々な種類の弁装置、例えば、絞り弁装置、流路切換弁、逆止弁、圧力調整弁などにも適用できる。即ち、当業者は、従来公知の知見に従い、本発明の骨子を逸脱しない範囲で種々変形して実施することができる。かかる変形によってもなお本発明の弁装置の構成を具備する限り、勿論、本発明の範疇に含まれるものである。
It should be noted that the above-described embodiments are merely representative forms of the present invention, and the present invention is not limited to the embodiments. Although the above-described solenoid valve has been shown as an example of an embodiment of the present invention, the present invention can be applied to various other types of valve devices such as a throttle valve device, a flow path switching valve, a check valve, a pressure adjustment valve, and the like. Applicable. That is, those skilled in the art can implement various modifications in accordance with conventionally known knowledge without departing from the scope of the present invention. Of course, such modifications are included in the scope of the present invention as long as the configuration of the valve device of the present invention is provided.
1~6 電磁弁(弁装置)
10、10A、10C、10E、10F、10H プランジャチューブ(弁ハウジング)
11 弁室
12、12A、12C、12E、12F、12H 周壁部
13、13A、13C、13D、13E、13F、13H、13J 平面部分
14、14A~14H 連通孔
20 プランジャ
30 弁体
40 弁座部材
50 吸引子
60 コイルばね
70 電磁コイル
81 第1継手(配管部材)
81A~81H 継手(配管部材)
82 第2継手
91 第1溶接部
92 第2溶接部
95、96 チューブ材 1-6 Solenoid valve (valve device)
10, 10A, 10C, 10E, 10F, 10H Plunger tube (valve housing)
11 Valve chamber 12, 12A, 12C, 12E, 12F, 12H Peripheral wall portion 13, 13A, 13C, 13D, 13E, 13F, 13H, 13J Planar portion 14, 14A-14H Communication hole 20 Plunger 30 Valve body 40 Valve seat member 50 Suction element 60 Coil spring 70 Electromagnetic coil 81 First joint (piping member)
81A to 81H Fitting (Piping member)
82 Second joint 91 First weldedportion 92 Second welded portion 95, 96 Tube material
10、10A、10C、10E、10F、10H プランジャチューブ(弁ハウジング)
11 弁室
12、12A、12C、12E、12F、12H 周壁部
13、13A、13C、13D、13E、13F、13H、13J 平面部分
14、14A~14H 連通孔
20 プランジャ
30 弁体
40 弁座部材
50 吸引子
60 コイルばね
70 電磁コイル
81 第1継手(配管部材)
81A~81H 継手(配管部材)
82 第2継手
91 第1溶接部
92 第2溶接部
95、96 チューブ材 1-6 Solenoid valve (valve device)
10, 10A, 10C, 10E, 10F, 10H Plunger tube (valve housing)
11
81A to 81H Fitting (Piping member)
82 Second joint 91 First welded
Claims (2)
- 円筒形状の弁ハウジングと、前記弁ハウジングの周壁部に接合された1つ又は複数の配管部材と、を備えた弁装置において、
前記弁ハウジングの周壁部が、前記弁ハウジングの内外を連通しかつ前記1つ又は複数の配管部材の一端部が嵌合される1つ又は複数の連通孔が形成された1つの平面部分を有し、
前記1つ又は複数の配管部材が、それぞれに対応する前記1つ又は複数の連通孔に一端部を嵌合された状態で前記平面部分にレーザー溶接により接合されている
ことを特徴とする弁装置。 In a valve device comprising a cylindrical valve housing, and one or a plurality of piping members joined to a peripheral wall portion of the valve housing,
The peripheral wall portion of the valve housing has one plane portion in which one or a plurality of communication holes are formed to communicate with the inside and outside of the valve housing and to which one end portions of the one or more piping members are fitted. And
The valve device is characterized in that the one or more piping members are joined to the planar portion by laser welding in a state where one end is fitted to the corresponding one or more communication holes. . - 円筒形状の弁ハウジングと、前記弁ハウジングの周壁部に接合された複数の配管部材と、を備えた弁装置において、
前記弁ハウジングの周壁部が、前記弁ハウジングの内外を連通しかつ前記複数の配管部材の一端部が嵌合される複数の連通孔が振り分けられて形成された複数の平面部分を有し、
前記複数の配管部材が、それぞれに対応する前記複数の連通孔に一端部を嵌合された状態で前記複数の平面部分にレーザー溶接により接合されている
ことを特徴とする弁装置。 In a valve device comprising a cylindrical valve housing and a plurality of piping members joined to a peripheral wall portion of the valve housing,
The peripheral wall portion of the valve housing has a plurality of planar portions formed by distributing a plurality of communication holes that communicate with the inside and the outside of the valve housing and are fitted with one end portions of the plurality of piping members,
The valve device, wherein the plurality of piping members are joined to the plurality of planar portions by laser welding in a state where one end portions are fitted into the plurality of communication holes corresponding to the plurality of piping members, respectively.
Priority Applications (1)
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Cited By (5)
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JP2018150959A (en) * | 2017-03-10 | 2018-09-27 | 株式会社鷺宮製作所 | Motor valve and refrigeration cycle system |
JP2018179205A (en) * | 2017-04-18 | 2018-11-15 | 株式会社不二工機 | Control valve and manufacturing method of the same |
WO2019056151A1 (en) * | 2017-09-19 | 2019-03-28 | 东莞好奇智能科技有限公司 | Sleeve-type fluid divider |
WO2019056150A1 (en) * | 2017-09-19 | 2019-03-28 | 东莞好奇智能科技有限公司 | Ferrule-type fluid division device |
CN110332360A (en) * | 2019-08-14 | 2019-10-15 | 珠海励高精工制造有限公司 | Pilot valve, its welding method, four-way reversing valve and air conditioner |
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Also Published As
Publication number | Publication date |
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JP2018025305A (en) | 2018-02-15 |
JPWO2014174954A1 (en) | 2017-02-23 |
JP6505193B2 (en) | 2019-04-24 |
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