JP6415891B2 - Solenoid valve device and control valve device - Google Patents

Description

  The present invention relates to a solenoid valve device and a control valve device.

  The operation of an automatic transmission of an automobile is controlled by driving oil. For this reason, the automobile is equipped with a hydraulic circuit that supplies oil to the automatic transmission together with the automatic transmission. In the hydraulic circuit, the oil pressurized by the oil pump is supplied to the automatic transmission via the control valve device.

  By the way, in recent years, a function of reducing unnecessary idling by stopping the engine when the automobile stops due to a signal or the like is installed in many automobiles such as hybrid cars. However, when the engine is stopped, the hydraulic pump is also stopped. For this reason, when the engine is restarted and the hydraulic pump is re-driven, it takes some time for the oil pressure to increase. Then, there was a problem that a time lag occurred in starting the automatic transmission.

As a solution to this problem, an accumulator is installed in the hydraulic circuit, and a high-pressure pump is installed in the accumulator in advance to store the pressure. Technologies to be introduced into the transmission have been proposed. The configuration of a hydraulic circuit provided with an accumulator is described in, for example, Japanese Patent Application Laid-Open No. 2006-258279.
JP 2006-258279 A Japanese Utility Model Publication No. 6-24282

  The oil accumulated in the accumulator is introduced to the automatic transmission side by opening an electromagnetic valve interposed between the accumulator and the automatic transmission. For this reason, the solenoid valve has to move the valve body against the oil pressure from the accumulator, and requires a large driving force when the valve is opened. In order to obtain a large driving force, it is necessary to increase the number of turns of the solenoid in the solenoid valve. This has hindered miniaturization and weight reduction of the solenoid valve in the hydraulic circuit.

  Further, even in general market demands, the flow rate required for the solenoid valve has a strong tendency to increase, and there is a movement to expand the size of the valve body in the solenoid valve. Even in such a case, the driving force of the valve body has to be increased, which has been a factor that hinders downsizing of the entire solenoid valve.

  As a measure for reducing the driving force when the electromagnetic valve is opened, for example, Japanese Utility Model Laid-Open No. 6-24282 discloses a control valve having two valves having a small diameter and a large diameter. When the control valve of the publication is opened, the small-diameter valve is opened first, and then the large-diameter valve is opened. In this way, since the force required to open the valve is dispersed, the driving force of the solenoid for opening each valve can be suppressed. However, in the structure of the publication, two valves are operated by one plunger. For this reason, it is necessary to make the movement stroke of the plunger driven by the solenoid longer.

An object of the present invention is to enable operation of a valve body without requiring an excessive driving force for driving the valve body even when a large valve body is used due to the large flow rate of the solenoid valve. An electromagnetic valve device is provided.

An exemplary first invention of the present application is an electromagnetic valve device, a nozzle tube extending in a cylindrical shape while being linearly or bent from one to the other, a first port provided on a side surface of the nozzle tube, A main flow path connecting the second port provided at the other end of the nozzle pipe, a main valve element disposed in the main flow path, and one side of the main valve element; A main valve seat member having a main opening that is blocked by fitting, a convex portion that contacts the main valve body from the one side of the main valve seat member through the main opening, and opened toward one side A closed state in which the main valve body is fitted into the main opening and an open state in which the main valve body is separated from the main valve seat member by having a hollow portion and moving along the inner peripheral surface of the nozzle tube. A main plunger to be switched; a sub-valve element provided separately from the main valve element in the nozzle tube; A sub-flow passage that connects the sub-valve seat member that is located on one side of the body and has a sub-opening that is closed by fitting the sub-valve element, the space on one side of the sub-valve seat member, and the hollow portion A branch flow path that is provided in the nozzle pipe and connects the third port having the same pressure as the second port, and the one side of the sub valve seat member from the one side. A sub-plunger that comes into contact with the sub-valve body through the sub-opening, and a closed state in which the sub-valve body fits into the sub-opening by moving the sub-plunger electromagnetically, A solenoid that switches between an open state away from the member, and a gist that a maximum value of an opening area of the hollow portion in a cross section orthogonal to a moving direction of the main plunger is larger than an opening area of the main opening .

  According to the first exemplary invention of the present application, when the sub-plunger is moved to the other side by the solenoid and the sub-valve body is pressed, the sub-opening is opened and the main plunger passes through the sub-flow path from the branch flow path. The fluid flows into the hollow part. If it does so, a main plunger will move to the other side with the pressure of a fluid, and a main opening will be open | released by pressing a main valve body. Thus, in this solenoid valve device, the main opening is opened using the pressure of the fluid. Since the solenoid only needs to open the sub-opening, it is possible to suppress the driving force of the solenoid required when the valve is opened and to shorten the moving stroke of the sub-plunger driven by the solenoid.

FIG. 1 is a schematic diagram of a hydraulic circuit. FIG. 2 is a longitudinal sectional view of the electromagnetic valve device. FIG. 3 is a longitudinal sectional view of the electromagnetic valve device during normal running. FIG. 4 is a longitudinal sectional view of the solenoid valve device when the transportation device is stopped. FIG. 5 is a longitudinal sectional view of the electromagnetic valve device immediately after restarting. FIG. 6 is a longitudinal sectional view of the electromagnetic valve device after the main opening is opened. FIG. 7 is a longitudinal sectional view of a solenoid valve device according to a modification.

  Hereinafter, exemplary embodiments of the present invention will be described with reference to the drawings.

<1. About hydraulic circuit>
FIG. 1 is a schematic diagram of a hydraulic circuit 1 including an electromagnetic valve device 20 according to an embodiment of the present invention. The hydraulic circuit 1 is mounted on a transport device such as an automobile, and controls the drive of the automatic transmission by supplying fluid (automatic transmission fluid, ATF) as fluid to the automatic transmission in the transport device. System. As shown in FIG. 1, the hydraulic circuit 1 of the present embodiment includes a hydraulic pump 10, a solenoid valve device 20, two accumulators 30, a first oil passage 41, and a second oil passage 42.

  The first oil passage 41 is an oil passage that connects the hydraulic pump 10 and the first port 81 of the electromagnetic valve device 20. The first oil passage 41 has an output oil passage 411 that branches from the middle of the route toward the automatic transmission. The second oil passage 42 is an oil passage connecting the second port 82 and the third port 83 of the electromagnetic valve device 20 and the two accumulators 30. The end of the second oil passage 42 on the accumulator 30 side branches into two and is connected to the accumulator 30 respectively.

  Further, as indicated by a two-dot chain line in FIG. 1, a part of the hydraulic circuit 1 is constituted by a control valve device 50. The control valve device 50 has a valve body 51 formed of aluminum die casting or the like. A part of the first oil passage 41 and a part of the second oil passage 42 become a flow path formed inside the valve body 51. The electromagnetic valve device 20 is incorporated in the valve body 51 of the control valve device 50 and is connected to the flow path in the valve body 51.

  When the hydraulic pump 10 is operated, the oil in the first oil passage 41 is pressurized, and the oil is supplied from the output oil passage 411 to the automatic transmission. As a result, the automatic transmission operates. At this time, part of the oil is supplied to the solenoid valve device 20 side. The oil is supplied to the two accumulators 30 through the electromagnetic valve device 20 and the second oil passage 42. When the solenoid valve device 20 is closed in this state, the oil is stored in the second oil passage 42 and the two accumulators 30 in a state where the pressure is accumulated.

  The oil stored in the second oil passage 42 and the two accumulators 30 is maintained at a high pressure even after the hydraulic pump is stopped. For this reason, when the operation of the automatic transmission is resumed, if the electromagnetic valve device 20 is first opened, the oil in the second oil passage 42 and the accumulator 30 passes through the electromagnetic valve device 20 and the first oil passage 41. Immediately supplied to the automatic transmission. Therefore, the supply of oil to the automatic transmission can be resumed in a shorter time than when the automatic transmission is restarted only by the hydraulic pump 10.

  In the example of FIG. 1, two accumulators 30 are connected to the second oil passage 42, but the number of accumulators 30 connected to the second oil passage 42 may be one. It may be the above.

<2. Structure of solenoid valve device>
Next, the structure of the electromagnetic valve device 20 will be described in more detail. FIG. 2 is a longitudinal sectional view of the electromagnetic valve device 20. As shown in FIG. 2, the solenoid valve device 20 of the present embodiment includes a nozzle pipe 21, a main valve body 61, a main valve seat member 62, a main plunger 63, a subvalve body 71, a subvalve seat member 72, and a subplunger 73. , Core 22, and solenoid 23.

  The nozzle tube 21 is a cylindrical member that accommodates the main valve body 61, the main valve seat member 62, the main plunger 63, the sub valve body 71, the sub valve seat member 72, the sub plunger 73, the core 22, and the solenoid 23 therein. It is. For example, a resin having high heat resistance is used as the material of the nozzle tube 21. Hereinafter, along the direction parallel to the central axis 9 indicated by the one-dot chain line in FIG. 2, the upper side in the drawing is referred to as “one side”, and the lower side in the drawing is referred to as “the other side”. The nozzle tube 21 of the present embodiment extends substantially linearly from one side to the other side around the central axis 9.

  The nozzle tube 21 has a first port 81, a second port 82, and a third port 83 that are oil outlets. The first port 81 is provided on the side surface of the nozzle tube 21 and penetrates the resin wall of the nozzle tube 21 in the radial direction. The second port 82 and the third port 83 are provided at the other end of the nozzle tube 21. When the electromagnetic valve device 20 is incorporated in the control valve device 50, the first port 81 is connected to the first oil passage 41, and the second port 82 and the third port 83 are connected to the second oil passage 42. Accordingly, the oil pressure at the second port 82 and the oil pressure at the third port 83 are always equal.

  In the present embodiment, the second port 82 and the third port 83 are both located at the other end of the nozzle tube 21 and are close to each other. Therefore, the second port 82 and the third port 83 can be easily connected to the second oil passage 42 when the electromagnetic valve device 20 is incorporated in the control valve device 50. Further, the oil passage can be connected without complicating the shape of the port on the valve body 51 side of the control valve device 50.

  A main flow path 60 that connects the first port 81 and the second port 82 is provided inside the nozzle tube 21. A main valve body 61 that is a sphere and a main valve seat member 62 that is a ring-shaped member are disposed in the main flow path 60. The main valve body 61 is movably accommodated in a space sandwiched between the first port 82 and the main valve seat member 62. The main valve seat member 62 is located on one side of the main valve body 61 and is fixed to the inner peripheral surface of the nozzle tube 21. For example, metal is used as the material of the main valve body 61 and the main valve seat member 62.

  The main valve seat member 62 has a main opening 621 in the center. The main opening 621 is a circular through hole having a smaller diameter than the main valve body 61. When the main valve body 61 is fitted into the main opening 621, the main opening 621 is closed. In the closed state, communication between the first port 81 and the second port 82 is blocked. On the other hand, when the main valve body 61 is separated from the main valve seat member 62, the main opening 621 is opened. In the open state, the first port 81 and the second port 82 communicate with each other through the main channel 60.

  The main plunger 63 is a member for operating the main valve body 61 to switch between the above-described closed state and open state. The main plunger 63 is disposed in a space on one side of the main valve seat member 62 in the nozzle tube 21. The main valve seat member 62 has a cup-shaped hollow portion 631 that opens toward one side, and a convex portion 632 that protrudes from the center of the hollow portion 631 toward the other side. A cylindrical outer peripheral surface of the hollow portion 631 is in contact with an inner peripheral surface of a partition member 24 described later with almost no gap. For example, metal is used as the material of the main plunger 63.

  The main plunger 63 can move to one side and the other side along the inner peripheral surface of the nozzle tube 21. When the main plunger 63 moves to the other side, the other end portion of the convex portion 632 contacts the main valve body 61 through the main opening 621. Thereby, the main valve body 61 is pressed to the other side, and the main opening 621 is in the open state described above. On the other hand, when the main plunger 63 moves to one side, the other end of the convex portion 632 moves away from the main valve body 61. For this reason, if the pressure on one side received by the main valve body 61 from the oil is stronger than the pressure on the other side, the main valve body 61 moves to one side and fits into the main opening 621. That is, the main opening 621 is in the closed state described above.

  The space in the hollow portion 631 of the main plunger 63 and the third port 83 are connected by a sub flow path 70 and a branch flow path 80 provided in the nozzle tube 21. Further, in the flow path including the sub flow path 70 and the branch flow path 80, a sub valve body 71 that is a spherical body and a sub valve seat member 72 that is a ring-shaped member are disposed. The sub flow path 70 connects the space on one side of the sub valve seat member 72 and the space in the hollow portion 631 of the main plunger 63. The branch flow path 80 connects the space on the other side of the sub valve seat member 72 and the third port 83.

  The sub flow path 70 and the branch flow path 80 are separated from each other by a partition member 24 provided in the nozzle tube 21. As shown in FIG. 2, the partition member 24 of the present embodiment includes a first partition part 241, a second partition part 242, and a third partition part 243. The first partition 241 extends in parallel with the central axis 9 on the side of the auxiliary valve body 71 and the auxiliary valve seat member 72. The second partition 242 extends perpendicularly to the central axis 9 on one side of the main plunger 63 and the other side of the subvalve element 71. The third partition 243 extends parallel to the central axis 9 on the side of the main plunger 63 and the main valve seat member 62.

  The sub flow path 70 extends substantially parallel to the central axis 9 between the inner peripheral surface of the nozzle tube 21 and the first partition 241. However, the auxiliary flow path 70 only needs to be positioned between the auxiliary valve body 71 and the outer surface of the nozzle tube 21. Therefore, for example, a through-hole serving as the auxiliary flow path 70 may be formed in the resin wall constituting the nozzle tube 21. The branch flow path 80 extends substantially parallel to the central axis 9 on the radially outer side of the third partition 243. In the present embodiment, a branch channel 80 is formed inside a resin wall constituting the nozzle tube 21. However, the branch flow path 80 may be positioned between the main valve body 61 and the main plunger 63 and the outer surface of the nozzle tube 21. Therefore, for example, the branch flow path 80 may be provided between the third partition portion 243 and the inner peripheral surface of the nozzle tube 21.

  The sub valve body 71 is movably accommodated in a space sandwiched between the sub valve seat member 72 and the second partition portion 242. The sub valve seat member 72 is located on one side of the sub valve body 71 and is fixed to the first partition portion 241 of the partition member 24. For example, metal is used as the material of the sub valve body 71 and the sub valve seat member 72.

  The sub valve seat member 72 has a sub opening 721 in the center. The sub-opening 721 is a circular through hole having a smaller diameter than the sub-valve element 71. When the sub-valve element 71 is fitted in the sub-opening 721, the sub-opening 721 is closed and the “closed state” is established. In the closed state, communication between the space in the hollow portion 631 of the main plunger 63 and the third port 83 is blocked. On the other hand, when the sub-valve element 71 is separated from the sub-valve seat member 72, the sub-opening 721 is opened. In the open state, the space in the hollow portion 631 of the main plunger 63 and the third port 83 communicate with each other via the sub flow path 70 and the branch flow path 80.

  The sub plunger 73 is a columnar member that operates the sub valve body 71 to switch between the above-described closed state and open state. The sub plunger 73 is located on one side of the sub valve seat member 72 and is disposed along the central axis 9. That is, in the electromagnetic valve device 20 of the present embodiment, the sub-plunger 73, the sub-valve seat member 72, the sub-valve element 71, and the main plunger 63 are directed from one side to the other side along the central axis 9 of the nozzle tube 21. The main valve seat member 62 and the main valve body 61 are disposed. A disc-shaped magnet 74 is attached to one end of the sub-plunger 73. The other surface of the magnet 74 opposes one end surface of the core 22 described later. For example, a metal is used as the material of the sub plunger 73.

  The core 22 and the solenoid 23 are mechanisms for moving the sub plunger 73 electromagnetically. The core 22 is a cylindrical magnetic body that extends along the central axis 9. The core 22 is fixed to the inner peripheral surface of the nozzle tube 21. A part of the sub-plunger 73 is inserted into a through hole provided at the center of the core 22. The solenoid 23 is formed by a conductive wire wound around the outer peripheral surface of the nozzle tube 21 outside the core 22.

  When a drive current is supplied to the solenoid 23, a magnetic flux in the direction along the central axis 9 is generated in the core 22. Then, a magnetic attractive force or a magnetic repulsive force is generated between one end face of the core 22 and the other end face of the magnet 74. Thereby, the magnet 74 and the sub plunger 73 move along the central axis 9.

  When the sub plunger 73 moves to the other side, the other end of the sub plunger 73 comes into contact with the sub valve body 71 through the sub opening 721. Thereby, the subvalve body 71 is pressed to the other side, and the subopening 721 becomes the open state mentioned above. On the other hand, when the sub plunger 73 moves to one side, the other end of the sub plunger 73 is separated from the sub valve body 71. For this reason, if the pressure on one side received by the sub-valve element 71 from the oil is stronger than the pressure on the other side, the sub-valve element 71 moves to one side and fits in the sub-opening 721. That is, the sub-opening 721 is in the closed state described above.

<3. Operation of solenoid valve device>
Next, the operation of the electromagnetic valve device 20 will be described. In the following, how the state of the electromagnetic valve device 20 changes during a series of vehicle operations in which the transportation device is run and then the engine is stopped and restarted to operate the automatic transmission. Will be described with reference to FIGS.

  FIG. 3 is a longitudinal sectional view of the electromagnetic valve device 20 during normal travel of the transport device. During normal traveling, the hydraulic pump 10 shown in FIG. 1 is driven, and pressurized oil 90 is supplied from the hydraulic pump 10 to both the automatic transmission and the electromagnetic valve device 20 via the first oil passage 41. Is done. The automatic transmission is driven by oil 90 supplied from the output oil passage 411. On the other hand, the oil 90 supplied to the solenoid valve device 20 side flows into the solenoid valve device 20 from the first port 81 of the solenoid valve device 20. Then, as shown in FIG. 3, the fluid is discharged from the second port 82 to the second oil passage 42 through the main flow path 60 in the electromagnetic valve device 20.

  At this time, the main plunger 63 moves to one side by the pressure of the oil 90. Then, the upper end of the hollow portion 631 of the main plunger 63 comes into contact with the lower surface of the second partition portion 242. Further, the main valve body 61 is separated from the main valve seat member 62 by the pressure of the oil 90. Thereby, the main opening 621 of the main valve seat member 62 is opened, and the main flow path 60 communicates.

  The oil 90 discharged from the second port 82 passes through the second oil passage 42 and is stored in the two accumulators 30. A part of the oil 90 discharged from the second port 82 flows into the branch flow path 80 through the third port 83. At this time, the sub-plunger 73 is disposed closer to one side by the drive current supplied to the solenoid 23. Accordingly, the sub valve body 71 is fitted into the sub opening 721 of the sub valve seat member 72 by the pressure of the oil 90. That is, the sub-opening 721 is closed. As a result, oil is stored in the second oil passage 42, the two accumulators 30, and the branch flow path 80 in a state where pressure is accumulated.

  FIG. 4 is a longitudinal sectional view of the electromagnetic valve device 20 when the transportation device is stopped. When the transportation device is stopped due to a signal waiting or the like, the hydraulic pump 10 stops. For this reason, the pressurized supply of the oil 90 from the first oil passage 41 is eliminated. Then, the main valve body 61 moves to one side by the pressure received from the oil 90 on the other side. As a result, the main valve body 61 is fitted into the main opening 621 of the main valve seat member 62 as shown in FIG. That is, the main opening 621 is closed.

  Therefore, even after the hydraulic pump 10 is stopped, the oil 90 in the space on the other side of the main valve body 61 in the main flow path 60, the second oil path 40, the two accumulators 30, and the branch flow path 80. Is maintained in the accumulated pressure state.

  FIG. 5 is a longitudinal cross-sectional view of the electromagnetic valve device 20 immediately after restarting the transportation device. When the transportation device is restarted, the hydraulic pump 10 resumes driving, but the hydraulic pump 10 requires a certain amount of time to increase the pressure of the oil 90 in the first oil passage 41. Therefore, the electromagnetic valve device 20 moves the sub plunger 73 toward the other side by supplying power to the solenoid 23 when the transportation device is restarted. Then, when the sub plunger 73 presses the sub valve body 71 to the other side, the sub opening 721 of the sub valve seat member 72 is opened. That is, the sub-opening 721 is switched to the open state.

  When the sub-opening 721 is opened, the oil 90 in the branch flow path 80 flows into the hollow portion 631 of the main plunger 63 through the sub-opening 721 and the sub-flow path 70. Thereby, the main plunger 63 moves to the other side by the pressure of the oil 90, and the convex portion 632 of the main plunger 63 presses the main valve body 61 to the other side.

  Here, the maximum value of the opening area of the hollow portion 631 in the cross section orthogonal to the moving direction of the main plunger 63 is larger than the opening area of the main opening 621 of the main valve seat member 62. For this reason, the pressure that the main valve body 61 receives from the main plunger 63 toward the other side is larger than the pressure that the main valve body 61 receives from the oil 90 toward the one side in the closed state. Therefore, the main valve body 61 is separated from the main valve seat member 62, and the main opening 621 of the main valve seat member 62 is opened. That is, the main opening 621 switches to the open state.

  In particular, in this embodiment, the movement axis of the main valve body 61 and the movement axis of the main plunger 63 are both located on the central axis 9. For this reason, a pressure can be efficiently given from the main plunger 63 to the main valve body 61.

  FIG. 6 is a longitudinal sectional view of the electromagnetic valve device 20 after the main opening 621 is opened. When the main opening 621 is opened, the oil 90 stored in the space on the other side of the main valve body 61 in the main flow path 60 flows into the first port 81 side through the main opening 621. Then, the oil 90 flows out from the first port 81 to the first oil passage 41 and is supplied to the automatic transmission through the output oil passage 411. As a result, the operation of the automatic transmission can be resumed without waiting for the oil pressure to be increased by the hydraulic pump 10.

  As described above, in the electromagnetic valve device 20, the main opening 621 is opened using the pressure of the oil 90. Since the solenoid 23 only needs to open the sub-opening 721, the driving force of the solenoid 23 required for valve opening can be suppressed. That is, the solenoid valve device 20 can be reduced in size and weight by reducing the number of turns of the conducting wire in the solenoid 23. Moreover, since the subplunger 73 only needs to operate the subvalve body 71, the movement stroke of the subplunger 73 can be shortened.

  In particular, the sub-valve element 71 is a sphere having a smaller diameter than the main valve element 61. The sub-opening 721 is a circular hole having a smaller diameter than the main opening 621. Thereby, the driving force required to move the auxiliary valve body 71 can be further reduced. Therefore, the solenoid valve device 20 including the solenoid 23 can be further reduced in size and weight.

  In the present embodiment, the nozzle tube 21 extends substantially linearly along the central axis 9. The main valve body 61 and the sub-valve body 71 are arranged on the central axis 9. If it does in this way, the bending of the nozzle pipe | tube 21 can be suppressed and the whole solenoid valve apparatus 20 can be made into a shape with a sufficient accommodation.

  In the present embodiment, the movement axis of the main valve body 61, the movement axis of the main plunger 63, and the movement axis of the sub-valve element 71 are all located on the central axis 9. If it does in this way, the main valve body 61, the main plunger 63, and the subvalve body 71 can be driven within the range of a small diameter. Therefore, the nozzle tube 21 can be further downsized.

<4. Modification>
As mentioned above, although exemplary embodiment of this invention was described, this invention is not limited to said embodiment.

  FIG. 7 is a longitudinal sectional view of an electromagnetic valve device 20A according to a modification. In the example of FIG. 7, the main valve body 61A, the main valve seat member 62A, and the main plunger 63A are arranged coaxially along the first central axis 91A. On the other hand, the sub-valve body 71A, the sub-valve seat member 72A, and the sub-plunger 73A are arranged coaxially along a second central axis 92A that is different from the first central axis 91A. The nozzle tube 21A extends while bending from one side to the other side in accordance with the layout of each of these elements. Thus, since the solenoid valve device of the present invention has a structure that moves the main valve body with the pressure of the fluid, the movement axis of the main valve body and the movement axis of the sub-valve body are arranged at different positions. Can do. Therefore, the shape of the nozzle tube can be designed flexibly according to the shape of the device to be attached.

  In the example of FIG. 7, the first central axis 91A and the second central axis 92A are parallel to each other, but the first central axis 91A and the second central axis 92A are not parallel to each other. Also good.

  Moreover, in said embodiment, the subplunger 73 was moved to both one side and the other side with the drive force of the solenoid 23. FIG. However, the solenoid of the present invention may apply a driving force only to one side or the other side of the sub plunger. For example, the sub-plunger may be biased in advance to the other side by a spring, and the solenoid may be configured to move the sub-plunger to one side as necessary.

  In the above embodiment, the automatic transmission of the transport device is the control target. However, the solenoid valve device of the present invention may be incorporated in a hydraulic circuit whose control target is a device controlled by a fluid other than the automatic transmission.

  The details of the electromagnetic valve device may be different from the structures and shapes shown in the drawings of the present application. Moreover, you may combine suitably each element which appeared in said embodiment and modification in the range which does not produce inconsistency.

  The present invention can be used for an electromagnetic valve device and a control valve device.

DESCRIPTION OF SYMBOLS 1 Hydraulic circuit 9 Center axis | shaft 10 Hydraulic pump 20, 20A Solenoid valve apparatus 21, 21A Nozzle pipe 22 Core 23 Solenoid 24 Partition member 30 Accumulator 41 1st oil path 42 2nd oil path 50 Control valve apparatus 51 Valve body 60 Main flow path 61 , 61A Main valve body 62, 62A Main valve seat member 63, 63A Main plunger 70 Sub flow path 71, 71A Sub valve body 72, 72A Sub valve seat member 73, 73A Sub plunger 74 Magnet 80 Branch flow path 81 First port 82 2nd port 83 3rd port 90 Oil 91A 1st central axis 92A 2nd central axis 411 Output oil path 621 Main opening 631 Hollow part 632 Convex part 721 Sub opening

Claims (8)

A solenoid valve device, which is provided in a nozzle tube extending linearly or bent from one side to the other, a first port provided on a side surface of the nozzle tube, and an end on the other side of the nozzle tube A main flow path connecting the second port formed, a main valve body disposed in the main flow path, and a main opening located on one side of the main valve body and closed by fitting the main valve body A main valve seat member, a convex portion that contacts the main valve body from the one side of the main valve seat member through the main opening, and a hollow portion that opens toward the one side. A main plunger that switches between a closed state in which the main valve body is fitted into the main opening and an open state in which the main valve body is separated from the main valve seat member by moving along an inner peripheral surface; A sub-valve provided separately from the main valve, and located on one side of the sub-valve, A sub-valve seat member having a sub-opening that is closed by fitting the sub-valve element; a sub-flow path connecting the space on one side of the sub-valve seat member; and the hollow portion; A branch channel provided in the other side space and provided in the nozzle pipe and connecting the second port and a third port having the same pressure; and from the one side of the sub valve seat member through the sub opening, the sub valve A sub-plunger in contact with the body, and electromagnetically moving the sub-plunger to switch between a closed state in which the sub-valve body is fitted into the sub-opening and an open state in which the sub-valve body is separated from the sub-valve seat member A solenoid valve device , wherein a maximum value of an opening area of the hollow portion in a cross section perpendicular to a moving direction of the main plunger is larger than an opening area of the main opening . The solenoid valve device according to claim 1, wherein the main valve body is a sphere, and the sub-valve body is a sphere having a smaller diameter than the main valve body. The electromagnetic valve device according to claim 1 or 2, wherein the main opening is a circular hole, and the sub-opening is a circular hole having a smaller diameter than the main opening. A solenoid valve device, which is provided in a nozzle tube extending linearly or bent from one side to the other, a first port provided on a side surface of the nozzle tube, and an end on the other side of the nozzle tube A main flow path connecting the second port formed, a main valve body disposed in the main flow path, and a main opening located on one side of the main valve body and closed by fitting the main valve body A main valve seat member, a convex portion that contacts the main valve body from the one side of the main valve seat member through the main opening, and a hollow portion that opens toward the one side. A main plunger that switches between a closed state in which the main valve body is fitted into the main opening and an open state in which the main valve body is separated from the main valve seat member by moving along an inner peripheral surface; A sub-valve provided separately from the main valve, and located on one side of the sub-valve, A sub-valve seat member having a sub-opening that is closed by fitting the sub-valve element; a sub-flow path connecting the space on one side of the sub-valve seat member; and the hollow portion; A branch channel provided in the other side space and provided in the nozzle pipe and connecting the second port and a third port having the same pressure; and from the one side of the sub valve seat member through the sub opening, the sub valve A sub-plunger in contact with the body, and electromagnetically moving the sub-plunger to switch between a closed state in which the sub-valve body is fitted into the sub-opening and an open state in which the sub-valve body is separated from the sub-valve seat member A movement axis of the main valve body and a movement axis of the main plunger coincide with each other, a movement axis of the main valve body, a movement axis of the main plunger, and a movement axis of the sub-valve body, There is a matching solenoid valve device. The electromagnetic valve device according to any one of claims 1 to 4, wherein the nozzle pipe extends linearly along a central axis, and the main valve body and the sub-valve body are connected to the central axis. Solenoid valve devices lined up above . The electromagnetic valve device according to claim 5, wherein the sub-plunger, the sub-valve body, the main plunger, and the main valve body are arranged from one side to the other side along the central axis of the nozzle tube. Arranged solenoid valve device. 5. The electromagnetic valve device according to claim 1, wherein the branch flow path is located between the main valve body, the main plunger, and an outer surface of the nozzle tube, and the nozzle. An electromagnetic valve device extending substantially parallel to a direction in which a tube extends . The electromagnetic valve device according to claim 7, wherein the third port is located at an end portion on the other side of the nozzle tube .

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