JP2005083533A - Solenoid valve device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a highly reliable, smaller and simpler solenoid valve device. <P>SOLUTION: Electric power is conducted to a coil and a valve element 16 is driven to be displaced with magnetic operation to adjust the opening of a valve passage 43. The electric power for driving the valve element 16 is conducted to the coil 17 via a conductive wire 18. The conductive wire 18 is provided ranging from a portion of a housing 15 which is exposed from a tank 11 to a portion on which the coil 17 is provided, and it is held in the housing 15 in the state of being inserted through the housing 15. The conductive wire 18 is inserted through the housing 15 and held in the housing 15, and so it is protected from external vibration and impact. The conductive wire 18 is therefore highly reliable in vibration resistance and impact resistance. The conductive wire 18 can be stored in the housing 15 in a neat fashion. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an electromagnetic valve device provided in a pressure device such as a high-pressure gas device.

  FIG. 4 is a perspective view showing a conventional electromagnetic valve 1. The solenoid valve 1 is shown in Non-Patent Document 1. The solenoid valve 1 is provided by screwing the other axial end 3 into the opening of a natural gas vehicle tank with the portion near the axial end 2 inserted in the tank. The solenoid valve 1 is configured to be opened and closed by controlling the power supply to the coil, and has a lead wire 4 for guiding power to the coil. This lead wire 4 is provided in an exposed state outside the housing 5 in which a valve body and the like are accommodated. In the solenoid valve 1, the primary port 6 for taking in the gas in the tank is formed so as to open radially outward in the axially intermediate portion. Such a solenoid valve 1 is called an in-tank valve or the like. For example, a valve manufactured by Superior in the United States is known.

Pamphlet issued by Hamai Co., Ltd. regarding solenoid operated valves, p. 34

  In the electromagnetic valve 1 of the prior art, the lead wire 4 is provided in a state of being exposed in the tank. Although the midway part of the lead wire 4 is bound by the binding tool 7, when vibration, impact, or the like is applied from the outside, the lead wire 4 is displaced due to vibration. As a result, the reliability of the solenoid valve 1 is lowered. Further, if the lead wire 4 is exposed, the portion of the solenoid valve 1 that is inserted into the tank is large and complicated. Further, in the configuration in which the primary port 6 opens radially outward, the electromagnetic valve 1 must be charged into the tank to the position where the primary port 6 faces the tank. This also makes the portion of the solenoid valve 1 charged into the tank large and complicated.

  An object of the present invention is to provide an electromagnetic valve device that is highly reliable and can be reduced in size and simplified.

The present invention is an electromagnetic valve device built in a pressure device that handles a pressure fluid in a state of being partially exposed from the pressure device,
A housing in which a primary port and a secondary port communicated by a valve passage are formed;
A valve body provided so as to be displaceable and changing the opening of the valve passage by this displacement;
Electromagnetic drive means for displacing and driving the valve body by magnetic action using electric power;
And a conductive means for holding the housing in a state of being inserted through the inside of the housing over a portion exposed from the pressure device of the housing and a portion provided with the electromagnetic driving means, and for conducting electric power to the electromagnetic driving means. It is a valve device.

  According to the present invention, electric power is guided to the electromagnetic driving means, the valve body is displaced by a magnetic action, and the opening degree of the valve passage is adjusted. Thus, the electric power for driving the valve body is guided to the electromagnetic driving means by the conductive means. The conductive means is provided over a portion of the housing exposed from the pressure device and a portion where the electromagnetic driving means is provided, and is held by the housing while being inserted through the inside of the housing. Thus, since the conductive means is provided through the housing and is held by the housing, the conductive means is protected from vibration and impact applied from the outside. Thereby, the reliability of vibration resistance and shock resistance of the conductive means can be increased. In addition, by storing the conductive means in the housing, the conductive means can be clearly stored in the housing.

In the present invention, the housing is configured by connecting a plurality of housing portions,
The conductive means is configured by connecting conductive pieces held in each housing part,
Each conductive piece is connected in connection with the connection operation of each housing part.

  According to the present invention, the conductive means has a plurality of conductive pieces, and each conductive piece is held in each housing part. When each housing part is connected, each conductive piece is connected accordingly. In this way, the conductive means can be provided in the housing formed by connecting the housing parts without requiring the connecting work of the housing parts and the connecting work of the conductive pieces individually.

Further, in the present invention, two conductive pieces connected to each other are formed such that an end portion of one conductive piece is formed in a pin shape, and an end portion of the other conductive piece is formed in a socket shape,
By inserting the pin-shaped end of one conductive piece into the socket-shaped end of the other conductive piece, the socket-shaped end of the other conductive piece allows the end of the pin of one conductive piece to It is characterized by being pinched in a resilient manner.

  According to the present invention, the conductive pieces are connected to each other by inserting the pin-shaped end portions into the socket-shaped end portions so that the pin-shaped end portions are elastically sandwiched between the socket-shaped end portions. Is done. In this way, each conductive piece can be connected, and a conductive means that can be connected as the housing parts are connected can be realized.

  In addition, the present invention is characterized by including a sealing means provided between the housing and the conductive means.

  According to the invention, a sealing means is provided between the housing and the conductive means. By providing this sealing means, it is possible to prevent fluid from leaking between the housing and the conductive means.

In the present invention, at least the housing, the valve body, and the electromagnetic driving means are coaxially arranged along a predetermined reference axis,
The primary port is formed at an end portion disposed inside the pressure device in a direction along the reference axis of the housing.

  According to the invention, the primary port is formed at the end located inside the pressure device in a direction along the reference axis of the housing. By forming the primary port at the end in this way, the primary port opens inside the pressure device as compared with the case where the primary port that opens in the direction intersecting the reference axis is formed in the intermediate portion along the axis. Thus, the restriction on the configuration can be reduced.

  According to the present invention, by providing the conductive means so as to pass through the inside of the housing, the reliability of the conductive means can be increased and the reliability of the electromagnetic valve device can be increased. Further, by accommodating the conductive means in the housing, the electromagnetic valve device can be reduced in size and simplified, that is, made compact. Thus, a highly reliable and compact electromagnetic valve device can be obtained.

  Further, according to the present invention, it is possible to provide the conductive means by inserting the inside of the housing by connecting the housing portions. Therefore, it is possible to realize a solenoid valve device with a small and simple configuration and good assembling ability.

  Moreover, according to this invention, a pin-shaped edge part is inserted in a socket-shaped edge part by connecting so that a housing part may be faced | matched, and each conductive piece is connected. Accordingly, it is possible to achieve connection of the conductive pieces at the same time by a simple connecting operation of the housing portions, and to improve the assemblability.

  Moreover, according to this invention, the suitable solenoid valve apparatus which can prevent the leakage of a fluid is realizable.

  Further, according to the present invention, the restriction for opening the primary port inside the pressure device is reduced, and the solenoid valve can be made compact.

  FIG. 1 is a cross-sectional view showing an electromagnetic on-off valve 10 according to an embodiment of the present invention. The electromagnetic on-off valve 10 is an electromagnetic valve device provided in a pressure device that handles a gas that is a fluid. The pressure device is, for example, a pressure vessel, more specifically, a high-pressure gas tank (hereinafter simply referred to as “tank”) 11. In particular, an electromagnetic opening and closing is provided in a tank 11 that stores combustible gas such as a fuel tank for a natural gas vehicle. Valve 10 is preferably used.

  This electromagnetic on-off valve 10 allows gas to flow from a space (hereinafter referred to as “tank space”) 12 in the tank 11 to a space (hereinafter referred to as “tank space”) 13 outside the tank 11 having a lower pressure than the tank space 12. Control emissions. Specifically, the electromagnetic on-off valve 10 is provided at the opening 14 of the tank 11 and controls the opening 14 to open and close to allow the gas to be discharged and to stop the gas from being discharged. .

  The electromagnetic on-off valve 10 includes a housing 15, a valve body 16, a coil 17, a conductive wire body 19, and a drive spring member 18. The valve body 16, the coil 17, the conductive wire body 19, and the drive spring member 18 are held in the housing 15 to constitute the electromagnetic on-off valve 10. The electromagnetic on-off valve 10 has a predetermined reference axis L10, and a portion on the X1 side of one of the directions X1 and X2 parallel to the reference axis L10 (hereinafter referred to as “axis direction”) is disposed in the tank internal space 12. The other X2 side portion is provided so as to be exposed to the tank outer space 13.

  The housing 15 is configured by connecting a plurality of housing parts, in the present embodiment, first and second housing parts 21 and 22. The axis of the housing 15 coincides with the reference axis L10, and the first housing part 21 is provided on one X1 side in the axial direction, and the second housing part 22 is provided on the other X2 side.

  The first housing portion 21 includes an inner insertion body 24 and an outer body 25. The insert 24 includes a fixed magnetic pole member 26, a nonmagnetic guide member 27, a magnetic guide member 28, and a connecting cylinder member 29. The fixed magnetic pole member 26 is made of, for example, a ferromagnetic material such as steel, and is generally formed in a cylindrical shape. The nonmagnetic guide member 27 is made of a nonmagnetic material and is formed in a cylindrical shape. The magnetic guide member 28 is made of a magnetic material, for example, steel, and is formed in a cylindrical shape. The connecting cylinder member 29 is generally formed in a cylindrical shape.

  The nonmagnetic guide member 27 and the magnetic guide member 28 have substantially the same inner diameter, outer diameter, and thickness dimension, and the inner diameter of the magnetic guide member 28 is larger than the inner diameter of the nonmagnetic guide member 27. The nonmagnetic guide member 27 and the magnetic guide member 28 have substantially the same outer diameters as the average outer diameters of the fixed magnetic pole member 26 and the connecting cylindrical member 29.

  The fixed magnetic pole member 26, the nonmagnetic guide member 27, the magnetic guide member 28, and the connecting cylinder member 29 are arranged in this order from the one axial direction X1 side to the other axial direction X2 side, and are mutually attached by bonding or welding. Combined mechanically. In this way, the bottomed cylindrical insert 24 is formed in which the first housing recess 35 that opens in the other axial direction X2 is formed.

  The outer shell 25 includes a solenoid case member 30 and a coil bobbin member 31. The solenoid case member 30 has a cylindrical shape having an inward flange portion at the end portion of the one axial direction X1. The coil bobbin member 31 has a cylindrical shape having outward flange portions at both ends in the axial direction. The inner diameter of the portion excluding the flange portion of the solenoid case member 30 is formed larger than the outer diameter of the portion excluding the flange portion of the coil bobbin member 31.

  The coil bobbin member 31 is inserted into the solenoid case member 30 from the other axial direction X2 side, and the yoke member 32 is fitted into the end of the solenoid case member 30 on the other axial direction X2 side to prevent the solenoid case member 30 from being removed. 30 and the coil bobbin member 31 are connected. In this way, the cylindrical outer body 25 is configured. The outer shell 25 has a coil chamber 34 defined by the solenoid case member 30 and the coil bobbin member 31, and is provided by being externally fitted at a position extending from the fixed magnetic pole member 26 to the magnetic guide member 28 of the insert 24.

  The second housing portion 22 is formed with a second housing recess 36 that opens in one axial direction X1 along the reference axis L10. An inner screw is engraved on the inner peripheral portion of the end of the second housing portion 22 in the axial direction one X1.

  An external thread is engraved on the outer peripheral portion of the portion on the other axial side X2 side of the connecting tube member 29 constituting the insert 24 of the first housing portion 21. The connecting cylinder member 29 is screwed to the second housing part 22, and the insertion body 24 of the first housing part 21 is connected to the second housing part 22.

  The fixed magnetic pole member 26 constituting the insert 24 of the first housing portion 21 is provided with an external screw on the outer peripheral portion of the end portion on the X1 side in the axial direction. In a state where the insertion body 24 is connected to the second housing portion 22, the outer body 25 is fitted on the insertion body 24. An annular resin spacer 37 is interposed between the outer shell 25 and the second housing portion 22, and a fixed nut member 38 having an internal thread engraved on the fixed magnetic pole member 26 is screwed.

  As a result, the outer housing 25 and the spacer 37 are sandwiched and fixed by the second housing portion 22 and the fixing nut member 38. In this way, the first and second housing parts 21 and 22 are connected to form the housing 15, and the valve chamber space 200 is formed in the housing 15 by the first and second housing recesses 35 and 36. The

  A primary passage 39 penetrating along the reference axis L <b> 10 is formed in the fixed magnetic pole member 26 constituting the insert 24 of the first housing portion 21. The second housing portion 22 is formed with a secondary passage 40 penetrating along the reference axis L10. The valve chamber space 200 is communicated with the tank internal space 12 serving as the external space of the housing 15 via the primary passage 39, and is communicated with the tank external space 13 serving as the external space of the housing 15 via the secondary passage 40.

  The opening of the primary passage 39 that opens to the tank internal space 12 is the primary port 41, and the opening of the secondary passage 40 that opens to the tank internal space 12 is the secondary port 42. The valve chamber space 200 is provided with a valve body 16 and the like, and in this state, the valve chamber space 200, the primary passage 39 and the secondary passage 40 constitute a valve passage 43. In this manner, the primary port 41 and the secondary port 42 and the valve passage 43 are formed in the housing 15, and the primary port 41 and the secondary port 42 are communicated by the valve passage 43. In FIG. 1, the portion of the secondary port 42 is omitted, but for ease of understanding, the secondary port symbol “42” is attached to the end of the secondary passage 40 in the drawing.

  FIG. 2 is an enlarged sectional view showing the vicinity of the valve body 16 of FIG. Referring also to FIG. 1, the valve body 16 is a means for opening and closing the valve passage 43, and includes a main valve body 44, a pilot valve body 45, and a movable iron core 46. The pilot valve body 45 and the movable iron core 46 are integrally formed. The pilot valve body 45, the movable iron core 46, and the main valve body 44 are configured to be mutually displaceable. The valve body 16 is a two-stage type. Configured as a valve body. The main valve body 44, the pilot valve body 45, and the movable iron core 46 are provided coaxially with the housing 15 in the valve chamber space 200 with their axes aligned with the reference axis L10.

  The main valve body 44 has a cylindrical portion 50 and a bottom portion 51 that closes one end of the cylindrical portion 50, and is generally formed in a bottomed cylindrical shape. The main valve body 44 has a bottom 51 disposed on the other side X2 in the axial direction, is fitted into the second housing part 22, and is supported by the second housing part 22 so as to be displaceable in the axial directions X1 and X2.

  A main valve seat 47 is formed in the second housing portion 22 so as to surround an opening that opens to the valve chamber space 200 of the secondary passage 40. The main valve body 44 extends over a main valve closed position where the main valve seat portion 49 formed on the bottom 51 is seated on the main valve seat 47 and a main valve open position where the main valve seat portion 49 is separated from the main valve seat 47. The main valve can be displaced in the main valve opening direction from the main valve closing position to the main valve opening position, and in the main valve closing direction from the main valve opening position to the main valve closing position.

  A concave groove 48 is formed in the outer peripheral portion of the main valve body 44 so as to penetrate in the axial directions X 1 and X 2, and the main valve body 44 is formed between the main valve body 44 and the housing 15 by using the concave groove 48. A passage 59 is formed. When the main valve body 44 is in the main valve closed position, it closes the main passage 59 and blocks the main passage 59 and the secondary passage 40. When the main valve body 44 is in the main valve open position, the main passage 59 is opened to connect the main passage 59 and the secondary passage 40.

  The main valve opening direction is one in the axial direction X1, and hereinafter, the same reference numeral X1 may also be attached to the main valve opening direction. The main valve closing direction is the other in the axial direction X2, and hereinafter, the same reference numeral X2 may also be attached to the main valve closing direction.

  The pilot valve body 45 is substantially cylindrical, and is supported by the connecting cylinder member 29 via the bearing member 64 so as to be displaceable in the axial directions X1 and X2 at a portion near the end 63 on the X1 side in the axial direction. Has been. In this state, the end 55 on the other X2 side in the axial direction of the pilot valve body 45 is gently fitted into the cylindrical portion 50 of the main valve body 44.

  A connecting hole 56 is formed in the end 55 on the other X2 side in the axial direction of the pilot valve body 45 so as to be perpendicular to the axis of the pilot valve body 45 (coincident with the reference axis L10). The main valve body 44 is provided with a shaft-shaped connecting member 57 in the cylinder portion 50 so as to be orthogonal to the axis of the main valve body 44 (coincident with the reference axis L10). The pilot valve body 45 is connected to the main valve body 44 by being gently inserted into the main valve body 56. In this state, the pilot valve body 45 can be displaced in the axial directions X1 and X2 with respect to the main valve body 44.

  A gap is formed between the end 55 on the other axial direction X2 side of the pilot valve body 45 and the cylindrical portion 50 of the main valve body 44, and a pilot passage 52 is formed. Further, a valve hole 60 is formed along the reference axis L10 in the bottom 51 of the main valve body 44, and a pilot valve seat 61 is formed so as to surround the opening of the valve hole 60 in the cylindrical portion 50. ing.

  The pilot valve body 45 includes a pilot valve closed position where a pilot valve seat portion 62 formed on the end portion 55 on the other X2 side in the axial direction is seated on the pilot valve seat 61, and the pilot valve seat portion 62 is separated from the pilot valve seat 61. The pilot valve opening position can be displaced in the pilot valve opening direction from the pilot valve closing position to the pilot valve opening position, and in the pilot valve closing direction from the pilot valve opening position to the pilot valve closing position.

  When the pilot valve body 45 is in the pilot valve closed position, the pilot passage 52 closes the pilot passage 52 and blocks the pilot passage 52 and the valve hole 60. When the pilot valve body 45 is in the pilot valve open position, the pilot passage 52 is opened to connect the pilot passage 52 and the valve hole 60.

  The pilot valve opening direction is one X1 in the axial direction, and hereinafter, the same symbol X1 may also be attached to the pilot valve opening direction. Further, the pilot valve closing direction is the other axial direction X2, and hereinafter, the same reference numeral X2 may also be attached to the pilot valve closing direction.

  The movable iron core 46 is made of a ferromagnetic material and is generally formed in a cylindrical shape. The movable iron core 46 has a guide portion 66 on the X1 side in the axial direction and an outer peripheral passage forming portion 67 on the other X2 side in the axial direction. The guide portion 66 is formed with an axial passage 68 that extends in the axial directions X1 and X2 along the axis (reference axis L10) and opens to one X1 in the axial direction. In the outer peripheral passage forming portion 67, an outer peripheral passage 69 that extends in the axial direction X1, X2 and opens in the other axial direction X2 is formed in the outer peripheral portion. Further, a communication passage 72 that connects the shaft passage 68 and the outer peripheral passage 69 is formed in the movable iron core 46.

  The movable iron core 46 is fitted between the fixed magnetic pole member 26 and the connecting cylinder member 28. In this state, the guide portion 66 is fitted into the nonmagnetic guide member 27. The movable iron core 46 and the magnetic guide member 28 have a larger gap than the movable iron core 46 and the nonmagnetic guide member 27. The movable iron core 46 is supported by the nonmagnetic guide member 27, and the axial directions X1, X2 To be displaceable.

  The pilot valve body 45 and the movable iron core 46 are mechanically coupled to each other, for example, by screwing. Thus, the pilot valve body 45 and the movable iron core 46 are connected and integrated, and are displaced as an integral component. In this case, this structure is supported at two places, that is, the support by the bearing 64 of the pilot valve body 45 and the support by the non-magnetic guide member 27 of the movable iron core 46, achieving high-precision guideability and smoothing. Can be displaced.

  The coil 17 which is electromagnetic driving means is means for generating a magnetic force when energized, in other words, being supplied with electric power, and driving the valve body 16 to be displaced by the magnetic force. The coil 17 is a solenoid coil, and is provided so as to cover at least a part of the fixed magnetic pole member 26 and at least a part of the movable iron core 46 from the outside in the radial direction, with its axis line coinciding with the reference axis line L10. Specifically, the coil 17 is fitted into the coil chamber 34 of the outer body 25 of the first housing portion 21 and is held inside the housing 21.

  When the coil 17 is energized, the fixed magnetic pole member 26 and the movable iron core 46 are magnetized together, and magnetic attractive forces in the axial directions X1 and X2 are applied to the fixed magnetic pole member 26 and the movable iron core 46 so as to be close to each other. . As a result, the movable iron core 46 is driven to be displaced in the axial direction X1 so as to approach the fixed magnetic pole member 26 forming a part of the housing 15. By driving the movable core 46 to be displaced, the pilot valve body 45 is driven to be displaced in the pilot valve opening direction X1, and the main valve body 44 connected to the pilot valve body 45 is further driven to be displaced in the main valve opening direction X1. it can. Therefore, the coil 17 drives the valve body 16 to be displaced in the opening direction X1.

  The drive spring member 18 that is an elastic pressing means is a means that drives and displaces the valve body 16 using a spring force that is an elastic recovery force. The drive spring member 18 is a compression coil spring, and its outer axis is fitted on the pilot valve body 45 so that its axis coincides with the reference axis L10, and is provided in the valve chamber space 200.

  The pilot valve body 45 is formed with a flange-shaped spring receiving piece 70 protruding outward in the radial direction at a portion between the main valve body 44 and the connecting cylinder member 29. Further, a spring receiving portion 71 is formed on the connecting cylinder member 29. The drive spring member 18 has an end on the X1 side in the axial direction supported by the spring receiving portion 71 of the connecting cylinder member 29, and an end on the other X2 side in the axial direction supported by the spring receiving piece 70 of the pilot valve body 45. Yes.

  The drive spring member 18 applies a spring force to the pilot valve body 45 in the other axial direction X2. As a result, the pilot valve body 45 is driven to move together with the movable iron core 46 in the pilot valve closing direction X2 which is the other in the axial direction, and the main valve body 44 connected to the pilot valve body 45 is driven to move in the main valve closing direction X2. can do. Therefore, the drive spring member 18 drives the valve body 16 to be displaced in the closing direction X1. The driving force by the driving spring member 18 is smaller than the driving force by the coil 17.

  FIG. 3 is an enlarged cross-sectional view showing the vicinity of the conductive wire 19 in FIG. Referring also to FIG. 1, the conductive wire 19 that is a conductive means is a means for guiding electric power to the coil 17. The conductive wire 19 is inserted through the inside of the housing 15 across a portion exposed from the tank 11 of the housing 15, that is, a portion exposed to the space outside the tank 13, and a portion where the coil 17 of the housing 15 is provided, that is, the coil chamber 34. And is held by the housing 15.

  In other words, the conductive wire 19 is connected to the coil 17 and is inserted into the housing 15 without being exposed to the tank inner space 12 or exposed to the valve chamber space 43 and drawn out to the tank outer space 13. Is done. The conductive wire 19 is configured by connecting first and second conductive pieces 75 and 76 held in the first and second housing parts 21 and 22, respectively.

  The first conductive piece 75 is held by the first housing portion 21, specifically, a flange portion (hereinafter referred to as “holding flange”) 78 on the other axial side X2 side of the coil bobbin member 31 in the outer shell 25. . The holding flange 78 is formed with a recess (hereinafter referred to as “connection recess”) 80 for accommodating the connection portion, and the end of the winding 82 constituting the coil 17 is formed in the connection recess 80. Has been withdrawn.

  The first conductive piece 75 is realized by a terminal pin made of a conductive material, has a stepped portion 83, and the outer diameter of the portion 84 on one side in the axial direction X1 is larger than the portion 85 on the other side in the axial direction X2. It is formed small. The first conductive piece 75 is arranged in a state where the stepped portion 83 is disposed inside the portion 81 on the other side X2 in the axial direction from the connection recess 80 of the holding portion 78 (hereinafter referred to as “holding portion”) 81. Is inserted in the axial direction X1, X2. As a result, the first conductive piece 75 is held by the holding portion 81 in a state where displacement in the axial direction one X1 is reliably prevented.

  The end 84 of the first conductive piece 75 on the X1 side in the axial direction protrudes into the connection recess 80 and is soldered or welded to the end of the winding 82 of the coil 17 in the connection recess 80. Are electrically connected. In this state, the connection recess 80 is filled with a filler 83 made of synthetic resin, and the connection portion between the first conductive piece 75 and the winding 82 is protected. At the end 85 on the other X2 side in the axial direction of the first conductive piece 75, the holding portion 78 protrudes toward the other X2 in the axial direction.

  The second conductive piece 76 has a lead wire 88 made of a conductive material and a terminal socket 89 made of a conductive material, and the terminal socket 89 is electrically connected to one end of the lead wire 88. The second conductive piece 76 is provided with the terminal socket 89 disposed on the one side X1 in the axial direction and the second housing 22 inserted through the axial directions X1 and X2, and the first and second housing portions 21 and 22 are provided. In a connected state, the first conductive piece is disposed at a position facing the axial direction X1, X2 with the position where the terminal pin 85 as the first conductive piece is provided.

  The terminal socket 89 has a cylindrical fitting portion 90 at the end on the one X1 side in the axial direction which is the end opposite to the side connected to the lead wire 88, and the axial direction is closer to the axial direction than the fitting portion 90. On the other side, a flange-like locking portion 91 protruding outward in the radial direction is formed on the X2 side. The terminal socket 89 is provided such that a portion on the X1 side in the axial direction partially protrudes from the second housing portion 22 to the X1 side in the axial direction. The terminal socket 89 is locked by fitting an outer peripheral end 92 of the locking portion 91 into an annular locking recess 93 formed in the second housing portion 22. This prevents displacement in the other axial direction X2.

  The terminal pin 75 which is the first conductive piece is inserted into the spacer 37 at a portion protruding from the holding portion 81 in the other axial direction X2. Further, the second conductive piece 76 is inserted into the spacer 37 at a portion protruding from the second housing portion 22 of the terminal socket 89. Inside the spacer 37, the terminal pin 75 is partially inserted into the fitting portion 90 of the terminal socket 89 and is elastically held by the fitting portion 90. In this way, the first and second conductive pieces 75 and 76 are mechanically and electrically connected.

  The first and second housings 21, 22 first connect the inner insert 24 to the second housing portion 22, and then move the exterior body 25 closer to the second housing portion 22, They are connected so as to be fitted and fitted. When the first and second housing parts 21 and 22 are connected, the first and second conductive pieces 75 and 76 are held in the first and second housing parts 21 and 22 in advance. Since the displacement of the pin 75 in one axial direction X1 is prevented and the displacement of the terminal socket 89 in the other axial direction X2 is prevented, that is, it is effective for the force received when the terminal pin 75 is inserted into the terminal socket 89. Therefore, when the first and second housing parts 21 and 22 are connected, the terminal pin 75 is inserted into the terminal socket 89, and the first and second conductive pieces 75 and 76 are mutually connected. Connected.

  An annular seal member 95, for example, an O-ring is provided so as to surround a portion of the terminal socket 89 on the other side X2 with respect to the other axial direction than the locking portion 91, and between the terminal socket 89 and the second housing 95. Is hermetically sealed. Thereby, even if the conductive wire 19 is provided inside the housing 15, gas leakage from between the housing 15 and the conductive wire 19 is prevented. The seal member 95 is provided in a space where the locking portion 91 of the terminal pin 89 faces from one axial direction X1 and a part of the second housing portion 22 faces from the other axial direction X2, and the terminal pin 75 is connected to the terminal socket. The direction of the force received by the terminal socket 89 when inserted into the terminal 89 is a force in a direction to reduce the space in which the seal member 95 is disposed, and acts in a direction in which the sealing performance is increased, thereby achieving a high sealing performance. The

  Referring again to FIG. 1, the electromagnetic on-off valve 10 is screwed into the tank 11 using an external screw that is inserted into the tank inner space on one side in the axial direction X1 and is engaged with the outer peripheral portion of the second housing portion 22. And attached to the tank 11. As described above, the electromagnetic on-off valve 10 is mounted on the tank 11 in a state where main components such as the valve body 16 and the coil 17 have entered the tank 11.

  A bypass passage 99 penetrating in the axial directions X1 and X2 is formed in the connecting cylinder member 29 of the electromagnetic on-off valve 10. In the housing 15, a primary side portion including a primary passage 39, a shaft passage 68, a communication passage 72, an outer peripheral passage 69 and a bypass passage 99, an open / close portion including a main passage 59, a pilot passage 52 and a valve hole 60, A valve passage 43 having a secondary portion including the secondary passage 40 and communicating the primary port 41 and the secondary port 42 is formed. The opening / closing portion of the valve passage 43 has two passages: a passage including the main passage 59 and a passage including the pilot passage 52 and the valve hole 60.

  In a state where the power supply to the coil 17 is stopped, the valve body 16 is driven by the spring force of the drive spring member 18 and is in the closed position, specifically, the main valve body 44 is in the main valve closed position. At the same time, the pilot valve body 45 is in the pilot valve closed position. As a result, both the main passage 59 and the pilot passage 52, in other words, the two passages are closed. Thus, the valve passage 43 is closed, the primary port 41 and the secondary port 42 are shut off, the electromagnetic on-off valve 10 is closed, and the gas in the tank inner space 12 is discharged to the tank outer space 13. It is blocked.

  When electric power is supplied to the coil 17 by the conductive wire 19, the movable iron core 46 and the pilot valve body 45 are both displaced in the pilot valve opening direction X1 by the magnetic force generated by the coil 17. Then, the pilot passage 52 is opened, the primary port 41 and the secondary port 42 are connected by the pilot passage 52, and the gas is discharged to the tank outer space 13.

At this time, the main valve body 44 receives the primary pressure, which is the pressure of the gas in the tank inner space 12 guided to the primary port 41, in the main valve closing direction X2 and the gas in the outer space 13 of the tank guided to the secondary port 42. A secondary pressure, which is a pressure, is received in the main valve opening direction X1. The effective primary pressure receiving area that effectively receives the primary pressure and the effective secondary pressure receiving area that effectively receives the secondary pressure are the same. Immediately after the pilot valve element 45 is driven to open, the difference between the primary pressure and the secondary pressure is large, and the main valve element 44 is the gas in the main valve closing direction X2 as the resultant force based on the primary pressure and the secondary pressure. It receives pressure driving force. The magnetic force generated by the coil 17 cannot resist this gas pressure driving force, and the main valve body 44 is in the main valve closed position. First of all,
In this state, when the gas is discharged, the secondary pressure gradually increases, and the difference between the primary pressure and the secondary pressure gradually decreases. In this way, the gas pressure driving force is reduced, and eventually the magnetic force by the coil 17 can resist this gas pressure driving force, and the main valve body 44 connected to the pilot valve body 45 is also main. Displacement drive is performed in the valve opening direction X1. As a result, the main passage 59 is opened, and the gas is discharged to the tank outer space 13 through the pilot passage 52 and the main passage 59. Thus, the valve body 16 is opened by the two-stage operation, and the electromagnetic on-off valve 10 is opened.

  When the power supply to the coil 17 is stopped from this open state, the valve body 16 is displaced in the closing direction X2 by the spring force of the drive spring member 18 and returns to the closed state. In this manner, the electromagnetic on-off valve 10 can open and close the valve passage 43 and control the discharge of gas from the tank inner space 12.

  According to the electromagnetic on-off valve 10 of the present embodiment, electric power is guided to the coil, the valve body 16 is displaced by a magnetic action, and the opening degree of the valve passage 43 is adjusted. The valve body 16 is a two-stage valve body, and has a configuration in which the valve passage 43 is opened by a two-stage opening operation as described above, and a driving force by gas pressure can be used for the opening operation. Therefore, the driving force by the coil 17 is small, and the coil 17 can be miniaturized and the electromagnetic on-off valve 10 can be made small.

  Thus, the electric power for driving the valve body 16 is guided to the coil 17 by the conductive wire 19. The conductive wire 19 is provided over a portion of the housing 15 exposed from the tank 11 and a portion where the coil 17 is provided, and is held by the housing 15 in a state of being inserted through the housing 15. Thus, since the conductive wire 19 is provided through the housing 15 and is held by the housing 15, it is protected against vibration and impact applied from the outside. As a result, the reliability of vibration resistance and shock resistance of the conductive wire 19 can be increased, and the reliability of the electromagnetic on-off valve 10 can be increased. Further, by storing the conductive wire 19 in the housing 15, the conductive wire 19 can be clearly stored in the housing 15. Thereby, the electromagnetic on-off valve 10 can be reduced in size and simplified, that is, made compact. Thus, the highly reliable and compact electromagnetic on-off valve 10 can be obtained.

  In addition, the conductive wire 19 has a plurality of first and second conductive pieces 75 and 76 in the present embodiment, and each of the conductive pieces 75 and 76 constitutes the first and second housing parts 21 and 21 constituting the housing 15. 22 respectively. When the housing parts 21 and 22 are coupled, the conductive pieces 75 and 76 are connected accordingly. As described above, the conductive wire is connected to the housing 15 constituted by connecting the housing parts 21 and 22 without requiring the connecting work of the housing parts 21 and 22 and the connecting work of the conductive pieces 75 and 76 individually. A body 19 can be provided. Therefore, it is possible to realize the electromagnetic on-off valve 10 having a small and simple configuration and good assemblability.

  The conductive pieces 75 and 76 are connected to each other by inserting the pin-shaped end portions into the socket-shaped end portions so that the pin-shaped end portions are elastically held between the socket-shaped end portions. . In this way, the conductive pieces 75 and 76 can be connected, and the conductive wire 19 that can be connected with the connection of the housing parts 21 and 22 can be realized. Therefore, the connection of the conductive pieces 75 and 76 can be achieved at the same time by a simple connecting operation of the housing parts 21 and 22, and the assemblability can be improved.

  A seal member 95 is provided between the housing 15 and the conductive wire body 19. By providing the seal member 15, it is possible to prevent gas from leaking between the housing 15 and the conductive wire 19. Therefore, a suitable electromagnetic valve device 10 can be realized. The outer peripheral surface of the terminal socket 89 is latched with a relatively thick insulating coating, which ensures electrical insulation with the second housing portion 22 and good adhesion with the seal member, thereby improving the sealing performance. doing.

  Further, the primary port 41 is formed at an end portion of the housing 15 that is disposed in the tank internal space 12 in the axial direction X1, X2. By forming the primary port 41 at the end in this manner, the primary port 41 is formed in the tank as compared with the case where the primary port that opens in the direction intersecting the reference axis L10 is formed at the intermediate portion between the axial directions X1 and X2. It is possible to reduce the restriction on the configuration of opening in the space 12. Thereby, the electromagnetic on-off valve 10 can be made compact.

  Further, the solenoid case 30 of the housing 15 has an open hole 100 that opens to the external space of the housing 15, here the tank internal space 12, and the coil chamber 34 is made uniform with the external pressure, which is undesirable for the coil 17. This prevents the external force from working. In this way, the reliability of the electromagnetic on-off valve 10 is increased.

  The above-described embodiment is merely an example of the present invention, and the configuration can be changed within the scope of the present invention.

It is sectional drawing which shows the electromagnetic on-off valve 10 of one Embodiment of this invention. It is sectional drawing which expands and shows the valve body 16 vicinity of FIG. It is sectional drawing which expands and shows the conductive wire body 19 vicinity of FIG. It is a perspective view which shows the solenoid valve 1 of a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Electromagnetic on-off valve 11 Tank 15 Housing 16 Valve body 17 Coil 18 Drive coil spring 19 Conductive wire body 44 Main valve body 45 Pilot valve body 75 1st conductive piece (terminal pin)
76 Second conductive piece 88 Lead wire 89 Terminal socket

Claims (5)

An electromagnetic valve device built in a pressure device that handles pressure fluid in a state of being partially exposed from the pressure device,
A housing in which a primary port and a secondary port communicated by a valve passage are formed;
A valve body provided so as to be displaceable and changing the opening of the valve passage by this displacement;
Electromagnetic drive means for displacing and driving the valve body by magnetic action using electric power;
And a conductive means for holding the housing in a state of being inserted through the inside of the housing over a portion exposed from the pressure device of the housing and a portion provided with the electromagnetic driving means, and for conducting electric power to the electromagnetic driving means. Valve device. The housing is configured by connecting a plurality of housing parts,
The conductive means is configured by connecting conductive pieces held in each housing part,
The electromagnetic valve device according to claim 1, wherein each conductive piece is connected in accordance with a connecting operation of each housing portion. Two conductive pieces connected to each other are formed such that the end of one conductive piece is formed in a pin shape, and the end of the other conductive piece is formed in a socket shape,
By inserting the pin-shaped end of one conductive piece into the socket-shaped end of the other conductive piece, the socket-shaped end of the other conductive piece allows the end of the pin of one conductive piece to The electromagnetic valve device according to claim 2, wherein the electromagnetic valve device is held elastically.   The electromagnetic valve device according to any one of claims 1 to 3, further comprising a sealing means provided between the housing and the conductive means. At least the housing, the valve body, and the electromagnetic driving means are disposed coaxially along a predetermined reference axis,
The solenoid valve device according to any one of claims 1 to 4, wherein the primary port is formed at an end portion disposed inside the pressure device in a direction along a reference axis of the housing.

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