WO2018084098A1

WO2018084098A1 - Valve block

Info

Publication number: WO2018084098A1
Application number: PCT/JP2017/039025
Authority: WO
Inventors: 貴之小川; 拓哉高下
Original assignee: Ｋｙｂ株式会社
Priority date: 2016-11-04
Filing date: 2017-10-30
Publication date: 2018-05-11
Also published as: CN109863327B; CN109863327A; JP2018071769A

Abstract

This valve block (B) comprises: a holding block (1) in which a pressure control valve (V1), a first open/close valve (V2), and a second open/close valve (V3) are integrated; and a side panel (2) mounted to the holding block (1). The side panel (2) includes a link passage (7) that links the first open/close valve (V2) or the second open/close valve (V3) with the pressure control valve (V1).

Description

Valve block

The present invention relates to a valve block.

Conventionally, a damper or an actuator using hydraulic pressure interposed between a vehicle body and a carriage is used as a vibration control device that suppresses left-right vibration relative to the traveling direction of the vehicle body in a railway vehicle.

In recent years, especially for trains with knitted ends, vehicles with current collectors, and special vehicles that pay special charges, the dampers are used as semi-active dampers and the semi-active dampers are also used in the actuators to improve the riding comfort of railway vehicles. Ingenuity has been made such as loading functions.

In such a semi-active damper or actuator, for example, as disclosed in JP2016-084841A, a pressure control valve is provided for controlling the pressure in the cylinder, and between the extension side chamber and the pressure side chamber in the cylinder. And two on-off valves provided in the passage between the pressure side chamber and the tank. The pressure control valve and the two on-off valves are electromagnetic valves and are mounted on a valve block connected to a bottom cap that closes the end of the cylinder.

Thus, the valve block is excellent in that the pressure control valve and the two on-off valves can be integrated and assembled to the cylinder as a single unit, but a plurality of passages are provided inside.

Specifically, the valve block has a passage communicating the expansion side chamber to the tank via the pressure control valve, a passage communicating the expansion side chamber to the pressure side chamber via one on-off valve, and the other on-off valve. A passage is provided through which the pressure side chamber communicates with the tank.

Since the valve block is assembled with three valves, a pressure control valve and two on-off valves, in order to avoid interference between the three passages, one of the three passages must be more than the other two passages. Must be placed on the non-cylinder side. For this reason, the valve block becomes large, and the mountability to the installation location of the vehicle or the like deteriorates.

Further, as disclosed in JP2015-222110A, a first valve block to which a pressure control valve is attached and a second valve block to which two on-off valves are attached are connected to constitute a valve block. There are also suggestions. However, if the valve block is configured in this way, the pre-shipment inspection of the pressure control valve and the two on-off valves must be performed separately for each valve block, which causes a problem that time and cost are required for the inspection work. .

Therefore, an object of the present invention is to provide a valve block that can be reduced in size and can reduce the time and cost for inspecting a mounted valve.

The valve block of the present invention includes a holding block and a side panel having a communication passage.

FIG. 1 is a diagram schematically showing a semi-active damper to which a valve block according to an embodiment is applied. FIG. 2 is a perspective view of a valve block according to an embodiment. FIG. 3 is a view showing a passage arrangement formed in the valve block in the embodiment. FIG. 4 is a view of the passage arrangement formed in the valve block in one embodiment as seen from another angle. FIG. 5 is a view showing a passage arrangement formed in the side panel of the valve block according to a modification of the embodiment. FIG. 6 is a diagram schematically showing an actuator to which the valve block in one embodiment is applied.

Hereinafter, the present invention will be described based on the embodiments shown in the drawings. As shown in FIGS. 1 to 4, the valve block B in one embodiment is attached to the holding block 1 to which the pressure control valve V1, the first on-off valve V2, and the second on-off valve V3 are attached, and to the holding block 1. The side panel 2 is provided.

In this example, the valve block B is connected to the expansion / contraction unit E, and constitutes a semi-active damper together with the expansion / contraction unit E. Although not shown, the telescopic unit E is interposed between the vehicle body of the railway vehicle and the carriage, and suppresses vibrations in the horizontal and lateral directions with respect to the vehicle traveling direction of the vehicle body with a damping force exerted.

Hereinafter, each part will be described in detail. As shown in FIG. 1, the telescopic unit E includes a cylinder 51, a piston 52 that is slidably inserted into the cylinder 51, a rod 53 that is inserted into the cylinder 51 and connected to the piston 52, and a tank 56. And a rectifying passage 57 and a suction passage 58.

The cylinder 51 is cylindrical, and the right end in FIG. 1 is closed by a lid 59, and an annular rod guide 60 is attached to the left end in FIG. Further, a rod 53 that is movably inserted into the cylinder 51 is slidably inserted into the rod guide 60. One end of the rod 53 protrudes outside the cylinder 51, and the other end is connected to a piston 52 that is slidably inserted into the cylinder 51. Note that the outer periphery of the rod 53 and the rod guide 60 are sealed by a seal member (not shown), whereby the inside of the cylinder 51 is maintained in a sealed state. The cylinder 51 is partitioned into a rod side chamber 54 through which the rod 53 is inserted by the piston 52 and a piston side chamber 55 through which the rod 53 is not inserted. The rod side chamber 54 and the piston side chamber 55 are filled with hydraulic oil, for example, as a liquid.

On the outer peripheral side of the cylinder 51, an outer cylinder 61 whose both ends are connected to the above-described lid 59 and rod guide 60 is provided. An annular gap is provided between the outer cylinder 61 and the cylinder 51, and a tank 56 for storing liquid is formed in the annular gap. Specifically, the tank 56 is filled with hydraulic oil as a liquid, and is filled with gas in addition to the hydraulic oil, and the pressure in the tank 56 is set to approximately atmospheric pressure. Further, a pipe 62 held between the lid 59 and the rod guide 60 is accommodated in the tank 56. The tank 56 is formed between the cylinder 51 and the outer cylinder 61, but may be provided elsewhere, for example, at a position arranged in series with respect to the rod side chamber 54 and the piston side chamber 55. May be.

Furthermore, the piston 52 is provided with a rectifying passage 57. The rectifying passage 57 communicates the piston-side chamber 55 and the rod-side chamber 54, and includes a check valve 57 a in the middle, allowing only the flow of hydraulic oil from the piston-side chamber 55 toward the rod-side chamber 54. It is set in the aisle. The lid 59 is provided with a suction passage 58. The suction passage 58 communicates between the tank 56 and the piston side chamber 55, and includes a check valve 58 a in the middle, and is a one-way passage that allows only the flow of hydraulic oil from the tank 56 toward the piston side chamber 55. Is set. In this example, the rectifying passage 57 is provided in the piston 52, but may be provided in another place.

The lid 59 has a passage 59a that opens to the side (the lower end in FIG. 1) and communicates with the pipe 62, and a passage 59b that opens from the side (the lower end in FIG. 1) and communicates with the piston side chamber 55. A passage 59c that opens from the side (the lower end in FIG. 1) and is connected to the suction passage 58 and communicates with the tank 56 is provided. The rod guide 60 is provided with a passage 60 a that communicates the rod side chamber 54 into the pipe 62. The passage 60 a communicates with the passage 59 a through the pipe 62 and communicates with the rod side chamber 54.

The valve block B includes a high-pressure side passage 3, an on-off valve passage 4, a first low-pressure side passage 5, a second low-pressure side passage 6, and a communication passage 7. Further, the valve block B holds the pressure control valve V1, and the first on-off valve V2 and the second on-off valve V3 via the valve portion accommodating member 9 to which the first on-off valve V2 and the second on-off valve V3 are attached. In this example, it is attached to the side of the lid 59 (the lower end in FIG. 1). FIG. 1 conceptually shows the valve block B and the valve portion housing member 9, and does not show their specific shapes.

As shown in FIGS. 1, 3 and 4, the high pressure side passage 3 opens from a contact surface that contacts the lid 59 of the valve block B and branches in the middle of the pressure control valve V <b> 1 upstream and first open / close. It leads to valve V2. The on-off valve passage 4 opens from a contact surface that contacts the lid 59 of the valve block B, branches in the middle, and communicates with the first on-off valve V2 and the second on-off valve V3. The first low-pressure side passage 5 communicates the downstream of the pressure control valve V <b> 1 and one end of the communication passage 7. The second low-pressure side passage 6 opens from a contact surface that contacts the lid 59 of the valve block B, branches in the middle, and communicates with the second on-off valve V3 and the other end of the communication passage 7.

When the valve block B is mounted on the lid 59, the high pressure side passage 3 is connected to the passage 59a that leads to the rod side chamber 54, the on-off valve passage 4 is connected to the passage 59b that leads to the piston side chamber 55, and the second low pressure side passage 6 It is connected to a passage 59 c that leads to the tank 56. Therefore, the high pressure side passage 3 and the on-off valve passage 4 cooperate to communicate the rod side chamber 54 and the piston side chamber 55, and the on / off valve passage 4 and the second low pressure side passage 6 cooperate to communicate with the piston side chamber 55. The tank 56 is in communication.

In this example, the pressure control valve V1 is a proportional electromagnetic relief valve that includes a valve portion 71 provided between the high-pressure side passage 3 and the first low-pressure side passage 5 and a solenoid 72 that drives the valve portion 71. Yes. The pressure control valve V1 can adjust the valve opening pressure in the valve portion 71 in accordance with the amount of current supplied to the solenoid 72. When the current amount is maximized, the valve opening pressure is minimized, and when no current is supplied, the valve is opened. The pressure is maximized. The first low-pressure side passage 5 communicates with the second low-pressure side passage 6 that communicates with the tank 56 via the communication passage 7 as described above. Therefore, the pressure control valve V1 can release the pressure to the tank 56 when the pressure in the rod side chamber 54 exceeds the valve opening pressure, and can adjust the pressure in the rod side chamber 54 to the valve opening pressure, depending on the amount of current supplied. Thus, the pressure in the rod side chamber 54 can be controlled.

In this example, the first on-off valve V2 is an electromagnetic on-off valve that includes a valve portion 73 that switches connection and disconnection between the high-pressure side passage 3 and the on-off valve passage 4 and a solenoid 74 that drives the valve portion 73. Yes. The first on-off valve V2 connects the high-pressure side passage 3 and the on-off valve passage 4 when energized, and disconnects the high-pressure side passage 3 and the on-off valve passage 4 when not energized. Therefore, the first on-off valve V2 is configured to connect the rod side chamber 54 and the piston side chamber 55 when energized, and to disconnect the rod side chamber 54 and the piston side chamber 55 when not energized.

In this example, the second on-off valve V3 is an electromagnetic on-off valve provided with a valve portion 75 that switches connection and disconnection between the on-off valve passage 4 and the second low-pressure side passage 6 and a solenoid 76 that drives the valve portion 75. Has been. The second on-off valve V3 connects the on-off valve passage 4 and the second low-pressure side passage 6 when energized, and disconnects the on-off valve passage 4 and the second low-pressure side passage 6 when not energized. Therefore, the second on-off valve V3 is configured to connect the piston-side chamber 55 and the tank 56 when energized, and to disconnect communication between the piston-side chamber 55 and the tank 56 when not energized.

In this example, the first on-off valve V2 and the second on-off valve V3 are attached to the valve portion housing member 9 that houses the valve portion 73 and the valve portion 75, and are connected to the valve block B via the valve portion housing member 9. Retained.

When the telescopic unit E exerts a damping force in the left direction in FIG. 1, the first on-off valve V2 is opened, the second on-off valve V3 is closed, and the desired amount of energization to the pressure control valve V1 is attenuated. Adjust according to the magnitude of the force. In this state, the communication between the piston side chamber 55 and the tank 56 is cut off by the second on-off valve V3. Therefore, when the piston 52 is pushed rightward in FIG. 1 by the external force and the expansion / contraction unit E contracts, the hydraulic oil expands from the piston side chamber 55 compressed through the high pressure side passage 3 and the on-off valve passage 4. Move to side chamber 54. Since the volume of hydraulic oil that the rod 53 enters into the cylinder 51 becomes excessive in the cylinder 51, the volume of hydraulic oil passes through the high-pressure side passage 3 and the pressure control valve V1, and first It moves to the tank 56 via the low pressure side passage 5, the communication passage 7 and the second low pressure side passage 6. Therefore, the pressure in the rod side chamber 54 is adjusted to the valve opening pressure of the pressure control valve V1. Further, in this case, since the rod side chamber 54 and the piston side chamber 55 are communicated with each other by the high pressure side passage 3 and the on-off valve passage 4, the pressures in the rod side chamber 54 and the piston side chamber 55 become equal. As described above, the expansion / contraction unit E generates a damping force in the left direction which is a value obtained by multiplying the pressure receiving area difference between the rod side chamber 54 side and the piston side chamber 55 side of the piston 52 by the pressure. In this case, since the pressures in the rod side chamber 54 and the piston side chamber 55 can be adjusted by the pressure control valve V1, when the expansion / contraction unit E contracts by an external force, the magnitude of the damping force that counters the contraction can be controlled.

In the state where the first on-off valve V2 is opened and the second on-off valve V3 is closed, when the expansion / contraction unit E extends, the following operation is performed. When the telescopic unit E extends, the hydraulic oil moves from the rod side chamber 54 to be compressed to the piston side chamber 55 that expands through the high pressure side passage 3 and the on-off valve passage 4. In this case, the rod 53 is retracted from the cylinder 51, but the volume of hydraulic oil from which the rod 53 retracts from the cylinder 51 is supplied from the tank 56 via the suction passage 58. And since the rod side chamber 54 and the piston side chamber 55 become tank pressure, the expansion-contraction unit E does not exhibit the damping force which opposes expansion | extension with respect to expansion | extension.

On the other hand, when the expansion / contraction unit E exerts a damping force in the right direction in FIG. 1, the first on-off valve V2 is closed, the second on-off valve V3 is opened, and the energization amount to the pressure control valve V1 is desired. Adjust according to the magnitude of damping force. In this state, the communication between the rod side chamber 54 and the piston side chamber 55 is interrupted by the first on-off valve V2. When the piston 52 is pushed leftward in FIG. 1 by the external force and the expansion / contraction unit E extends, the hydraulic oil passes from the compressed rod side chamber 54 through the high pressure side passage 3 and the pressure control valve V1 to the first low pressure side. It moves to the tank 56 via the passage 5, the communication passage 7 and the second low-pressure side passage 6. Therefore, the pressure in the rod side chamber 54 is adjusted to the valve opening pressure of the pressure control valve V1. Further, although the rod 53 is retracted from the cylinder 51, the hydraulic oil corresponding to the volume from which the rod 53 is retracted from the cylinder 51 is supplied from the tank 56 via the suction passage 58. Therefore, the pressure in the piston side chamber 55 becomes the tank pressure. In this case, the pressure in the rod side chamber 54 becomes equal to the valve opening pressure of the pressure control valve V1, and the pressure in the piston side chamber 55 becomes the tank pressure. A rightward damping force having a value obtained by multiplying the area by the pressure is generated. In this case, since the pressure in the rod side chamber 54 can be adjusted by the pressure control valve V1, when the expansion / contraction unit E is extended by an external force, the magnitude of the damping force that opposes the extension can be controlled.

In the state where the first opening / closing valve V2 is closed and the second opening / closing valve V3 is opened, the expansion / contraction unit E operates as follows. When the expansion / contraction unit E contracts, the hydraulic oil moves from the compressed piston side chamber 55 to the rod side chamber 54 via the rectifying passage 57 and also moves to the tank 56 through the on-off valve passage 4 and the second low pressure side passage 6. . Accordingly, when the expansion / contraction unit E contracts with the first on-off valve V2 closed and the second on-off valve V3 open, the rod side chamber 54 and the piston side chamber 55 are at tank pressure, so the expansion unit E contracts. Does not exert a damping force against contraction.

In the expansion / contraction unit E of this example, the pressure receiving area on the rod side chamber 54 side of the piston 52 is set to one half of the pressure receiving area on the piston side chamber 55 side. Therefore, when the same force is generated on both sides of the expansion and contraction, the pressure in the rod side chamber 54 is the same on the expansion side and the contraction side, and the energization amount of the pressure control valve V1 is also the same depending on the expansion and contraction direction. In addition, since the amount of hydraulic oil passing through the pressure control valve V1 is the same with respect to the displacement amount (stroke amount) of the expansion / contraction unit E, there is an advantage that the responsiveness is the same on both expansion and contraction sides. Even when the pressure receiving area on the rod side chamber 54 side of the piston 52 is not set to ½ of the pressure receiving area on the piston side chamber 55 side, the force on both sides of the expansion / contraction unit E can be controlled by the pressure of the rod side chamber 54. The point does not change.

Thus, the semi-active damper can function as a one-effect damper that exhibits a damping force only in a desired direction. Therefore, for example, when the direction in which the damping force is exerted is the direction in which the vehicle body is vibrated by the vibration of the bogie of the railway vehicle, the semi-active damper is used as a one-effect damper so that no damping force is generated in such a direction. Can function. Therefore, the semi-active damper can easily realize semi-active control based on Karnop's skyhook theory.

Further, when both the first on-off valve V2 and the second on-off valve V3 are closed, when the expansion / contraction unit E expands / contracts, the hydraulic oil is always discharged from the cylinder 51 to the tank 56 via the pressure control valve V1. Therefore, in this case, when the energization amount to the pressure control valve V1 can be adjusted, the semi-active damper can function as a variable damping damper. Further, when the pressure control valve V1, the first on-off valve V2, and the second on-off valve V3 cannot be energized, the valve opening pressure of the pressure control valve V1 becomes maximum, and the semi-active damper functions as a passive damper.

If a proportional electromagnetic relief valve is used that proportionally changes the valve opening pressure with the amount of current applied to the pressure control valve V1, the valve opening pressure can be easily controlled. However, the pressure control valve V1 is limited to a proportional electromagnetic relief valve. Not.

Next, the specific structure of the valve block B will be described in detail. As described above, the valve block B is attached to the holding block 1 to which the pressure control valve V1, the first on-off valve V2, and the second on-off valve V3 are attached, as shown in FIGS. The side panel 2 is provided. In order to facilitate understanding, in FIGS. 2 to 4, the top, bottom, left, and right sides are determined by arrows.

The holding block 1 has a substantially rectangular parallelepiped fixing portion 1a whose back surface is in contact with the lid 59 in FIG. 3, and a substantially L portion continuous to the front surface side in FIG. 3, which is the side opposite to the fixing portion 1a. And a main body 1b having a character shape. And the side panel 2 is made into the substantially L shape, and is piled up and fixed to the surface in FIG. 3 used as the anti-lid side in the main-body part 1b of the holding block 1. As shown in FIG. Therefore, in this example, the mounting part A to which the side panel 2 in the holding block 1 is mounted is provided on the surface in FIG. The fixing portion 1a is provided with a plurality of bolt insertion holes 1c leading from the front surface side to the back surface side, and the lid 59 is provided with screw holes (not shown) at positions corresponding to the respective bolt insertion holes 1c. Therefore, when a bolt (not shown) is screwed into the screw hole through the bolt insertion hole 1c, the valve block B can be bolted to the lid 59.

The holding block 1 is provided with the aforementioned high pressure side passage 3, the on-off valve passage 4, the first low pressure side passage 5 and the second low pressure side passage 6, and the side panel 2 is provided with a communication passage 7. ing.

The main body portion 1b of the holding block 1 is provided with a valve hole 8 into which the valve portion 71 of the pressure control valve V1 is inserted, and the high pressure side passage 3 and the first low pressure side passage 5 are communicated with the valve hole 8. Yes.

Further, as shown in FIG. 3, the upper end of the holding block 1 is provided with a valve portion accommodating member 9 having

valve holes

9a and 9b for accommodating the

valve portions

73 and 75 in the first on-off valve V2 and the second on-off valve V3. Is installed. The valve portion accommodating member 9 holds

solenoids

74 and 76 of the first on-off valve V2 and the second on-off valve V3. Thus, in this example, the first on-off valve V2 and the second on-off valve V3 are mounted on the holding block 1 via the valve portion housing member 9.

The high-pressure side passage 3 opens from the abutting portion opposite to the mounting portion A on which the side panel 2 of the holding block 1 is mounted toward the surface side in FIG. A first hole 3a that communicates with the upper end in FIG. 3, a second hole 3b that opens from the right end in FIG. 3 of the main body 1b and extends to the left and communicates with the valve hole 8, and from the mounting portion A in FIG. And a third hole 3c that opens toward the back side and communicates the first hole 3a and the second hole 3b.

The straight part leading to the upper end of the main body 1b in the first hole 3a and the second hole 3b are provided so as to be shifted in the front and back direction with respect to the holding block 1 so as not to cross each other. That is, the linear part leading to the upper end of the main body 1b in the first hole 3a and the second hole 3b are provided at the twisted position. And the 1st hole 3a and the 2nd hole 3b are connected by the 3rd hole c orthogonal to these 1st holes 3a and the 2nd hole 3b.

The first hole 3 a communicates with the valve hole 9 a in which the valve portion 73 is accommodated, and the right end of the second hole 3 b in FIG. 3 is closed by the plug 10. Moreover, the surface side end in FIG. 3 of the 3rd hole 3c is covered with the side panel 2, and is obstruct | occluded. A disc-shaped seal member 11 sandwiched between the holding block 1 and the side panel 2 is applied to the opening of the third hole 3c, thereby preventing hydraulic oil from leaking. Therefore, the high-pressure side passage 3 opens from a position removed from the mounting portion A of the side panel 2 of the holding block 1 and branches in the middle to communicate with the pressure control valve V1 and the first on-off valve V2.

As shown in FIG. 3, the on-off valve passage 4 opens from the abutting portion on the opposite side to the mounting portion A to which the side panel 2 of the holding block 1 is mounted toward the surface side in FIG. The fourth hole 4a leading to the upper end in FIG. 3 of the main body part 1b by bending in the middle, the V-shaped fifth hole 4b opening from the upper end to the upper end in FIG. 3 of the main body part 1b, and the holding block 1 It consists of a sixth hole 4c that opens from the mounting portion A toward the back side in FIG. 3 and communicates the fourth hole 4a and the fifth hole 4b.

The straight part leading to the upper end of the main body 1b in the fourth hole 4a and the fifth hole 4b are provided so as to be shifted in the front and back directions with respect to the holding block 1 so as not to cross each other. That is, the linear part leading to the upper end of the main body 1b in the fourth hole 4a and the fifth hole 4b are provided at the twisted position. And the 4th hole 4a and the 5th hole 4b are connected by the 6th hole 4c orthogonal to these 4th hole 4a and the 5th hole 4b.

The upper end of the fourth hole 4a in FIG. 3 is covered and closed by the valve housing member 9. Further, a disc-shaped seal member 13 sandwiched between the holding block 1 and the valve portion accommodating member 9 is applied to the opening of the fourth hole 4a, thereby preventing hydraulic oil from leaking. One of the openings of the fifth hole 4b communicates with the valve hole 9a in which the valve part 73 is accommodated, and the other of the openings of the fifth hole 4b communicates with the valve hole 9b in which the valve part 75 is accommodated. The surface side end of the sixth hole 4c in FIG. 3 is covered and closed by the side panel 2. A disc-shaped seal member 12 sandwiched between the holding block 1 and the side panel 2 is applied to the opening of the sixth hole 4c, thereby preventing hydraulic fluid from leaking.

Therefore, the on-off valve passage 4 opens from a position disengaged from the mounting portion A of the side panel 2 of the holding block 1 and branches halfway to the first on-off valve V2 and the second on-off valve V3.

The first low-pressure side passage 5 opens from the mounting portion A on the surface side in FIG. 3 of the holding block 1 and communicates with the valve hole 8. Further, the second low-pressure side passage 6 opens from the abutting portion on the opposite side to the mounting portion A where the side panel 2 of the holding block 1 is mounted toward the surface side in FIG. A seventh hole 6a that communicates with the upper end of the main body 1b in FIG. 3 and an eighth hole 6b that opens from the mounting portion A of the holding block 1 toward the back surface in FIG. 3 and communicates with the seventh hole 6a. ing. The straight part leading to the upper end of the main body 1b in the seventh hole 6a and the eighth hole 4b are orthogonal to each other, and the seventh hole 6a and the eighth hole 6b communicate with each other. Therefore, the second low-pressure side passage 6 opens from a position disengaged from the mounting portion A of the side panel 2 of the holding block 1 and branches halfway, one to the second opening / closing valve V3 and the other to the mounting portion A. Communicates.

The open ends of the

holes

3a, 4a, 6a where the high-pressure side passage 3, the on-off valve passage 4, and the second low-pressure side passage 6 are opened at positions away from the mounting portion A of the side panel 2 of the holding block 1 are held. What is necessary is just to arrange | position on the contact surface to the lid | cover 59 other than the mounting part A of the block 1. FIG. Therefore, when the contact surface of the holding block 1 to the lid 59 is the contact surface other than the back surface in FIG. 3 except for the surface on which the side panel 2 is mounted, the contact surface. The opening ends of the

holes

3a, 4a, 6a may be disposed in

As shown in FIG. 3, the communication passage 7 is opened from the mounting portion A side which is the back surface side of the side panel 2, and is connected to the left end of the side panel 2, and the mounting which is the back surface side of the side panel 2. And a tenth hole 7b that opens from the part A side and communicates with the upper end of the side panel 2. The straight line portion that leads to the left side of the side panel 2 in the ninth hole 7a and the straight line portion that leads to the upper end of the side panel 2 in the tenth hole 7b are provided at the same level in the front and back direction with respect to the side panel 2 so as to be orthogonal to each other. It has been. Note that the left end opening of the ninth hole 7 a is closed by the plug 14, and the upper end opening of the tenth hole 7 b is also closed by the plug 15.

Although not shown, the side panel 2 is provided with a plurality of bolt insertion holes, and the holding block 1 is provided with a plurality of screw holes at positions corresponding to these bolt insertion holes. When the side panel 2 is overlapped with the mounting portion A on the surface of the holding block 1, the bolt insertion hole and the screw hole face each other, and a bolt (not shown) is inserted into the bolt insertion hole and screwed into the screw hole. The panel 2 is attached to the holding block 1 in a fixed state.

Then, the tenth hole 7b of the communication passage 7 is opposed to the first low-pressure side passage 5 opened at the surface side end of the holding block 1, and both are communicated, and the ninth hole 7a of the communication passage 7 is the surface of the holding block 1. Both communicate with each other so as to face the eighth hole 6b in the second low-pressure side passage 6 opened at the side end. The first low-pressure side passage 5 and the second low-pressure side passage 6 communicate with each other through the communication passage 7.

When the valve block B having the side panel 2 mounted on the holding block 1 is mounted with the pressure control valve V1, the first on-off valve V2 and the second on-off valve V3 integrated with the valve portion housing member 9, these are assembled. The When the valve block B equipped with the pressure control valve V1, the first on-off valve V2, and the second on-off valve V3 is attached to the lid 59, the first hole 3a communicates with the passage 59a and the high-pressure side passage 3 becomes the rod side chamber 54. Communicated with The fourth hole 4a communicates with the passage 59b, the on-off valve passage 4 communicates with the rod side chamber 54 and the piston side chamber 55, the seventh hole 6a communicates with the passage 59c, and the second low-pressure side passage 6 becomes the tank. 56 communicates.

Accordingly, as described above, the magnitude of the damping force can be adjusted by the pressure control valve V1, and the semi-active damper can be made to be a one-effect damper, a variable damping damper, or a passive by opening and closing the first on-off valve V2 and the second on-off valve V3. It can function as a damper.

The valve block B includes a holding block 1 and a side panel 2 having a communication passage 7. If the valve block B is configured in this way, the communication path 7 that communicates the pressure control valve V1 and the second on-off valve V3 is provided in the side panel 2, so that the path formed in the holding block 1 must be avoided. It is easy to form the communication passage 7 that does not become necessary, and there is no influence on the arrangement of the other passages described above when the communication passage 7 is formed. Therefore, the degree of freedom of passage arrangement in the valve block B is improved, efficient passage arrangement is possible, and the valve block B can be downsized.

Further, in the valve block B of the present invention, the pressure control valve V1, the first on-off valve V2, and the second on-off valve V3 can be attached to one holding block 1, and the side panel 2 is attached to the holding block 1. Since they are assembled, the valves V1, V2, and V3 need only be inspected once, and the time and cost for the inspection can be greatly reduced. As described above, according to the valve block B of the present invention, it is possible to reduce the size and the time and cost for inspecting the valves V1, V2, and V3 to be mounted.

Further, in the valve block B of the present example, the holding block 1 opens from a position disengaged from the mounting portion A where the side panel 2 is mounted, and communicates with the upstream of the pressure control valve V1 and the first on-off valve V2. 3, an on-off valve passage 4 that opens from a position away from the mounting portion A and communicates with the first on-off valve V2 and the second on-off valve V3, and a first passage that opens from the mounting portion A and communicates downstream of the pressure control valve V1. The first low pressure side passage 5 has a second low pressure side passage 6 which opens from a position disengaged from the mounting portion A and communicates with the second on-off valve V3 and the mounting portion A. The passage 5 communicates with the second low-pressure side passage 6.

In the valve block B configured in this way, the communication passage 7 can easily avoid the high-pressure side passage 3 and the on-off valve passage 4 provided in the holding block 1, so that the pressure control valve V1, the first on-off valve V2, and The second on-off valve V3 can be arranged side by side, the thickness of the valve block B in FIG. 3 can be reduced, and the size can be reduced more effectively.

Further, in the valve block B of this example, the high pressure side passage 3 opens from a position disengaged from the mounting portion A of the holding block 1 and the first hole 3a communicates with the first on-off valve V2, and the first hole 3a communicates with the pressure control valve V1. It has a second hole 3b and a third hole 3c that opens from the mounting portion A and communicates the first hole 3a and the second hole 3b, and the on-off valve passage 4 is disengaged from the mounting portion A of the holding block 1. A fourth hole 4a that opens from the position, a fifth hole 4b that communicates with the first on-off valve V2 and the second on-off valve V3, and a fourth hole that opens from the mounting portion A and communicates with the fourth hole 4a and the fifth hole 4b. The side panel 2 closes the opening in the mounting portion A of the third hole 6c and the sixth hole 4c.

When the valve block B is configured in this way, even when the holding block 1 is drilled from the surface side in FIG. 3 when the high pressure side passage 3 and the on-off valve passage 4 are formed, the side panel 2 Therefore, a plug for closing the opening on the surface side is not necessary. The plug has to be screwed into the hole and needs to be sealed, so the overall length is long. However, the plug is not necessary, so the thickness of the holding block 1 can be reduced in the front and back directions in FIG. The thickness of the entire block B in the front-back direction in FIG. Further, since the opening on the surface side can be closed by the side panel 2, no plug is required, and the processing cost of the high-pressure side passage 3 and the on-off valve passage 4 provided in the holding block 1 is reduced.

As shown in FIG. 5, the first sensor holes 16 that open from the contact surface to the holding block 1 on the back surface side to the side panels 21 and communicate with the holes 3 c and 4 c and the upper end of the side panel 21. And a second sensor hole 17 is provided. Then, the first pressure sensor 18 and the second pressure sensor 19 are attached to the upper end openings of the first sensor hole 16 and the second sensor hole 17, respectively. Thus, the pressure in the rod side chamber 54 can be detected by the first pressure sensor 18 through the third hole 3c, and the piston side chamber 55 can be detected by the second pressure sensor 19 through the sixth hole 4c when the second on-off valve V3 is opened. The pressure inside can be detected. Thus, if the side panel 21 is provided with the first pressure sensor 18 that detects the pressure in the third hole 3a and the second pressure sensor 19 that detects the pressure in the sixth hole 4c, the valves V1, V2, and V3 In addition to being able to inspect, it can also be used to control the force generated by the telescopic unit E. If the

pressure sensors

18 and 19 are not required at the time of control, the side panel 21 shown in FIG. 5 may be used at the time of inspection to replace the side panel 2 before shipping.

Further, as shown in FIG. 6, a drive unit D having a pump 64 driven by a motor 63 is attached to the lid 59 of the expansion / contraction unit E so that hydraulic oil is supplied to the rod side chamber 54 by the pump 64. Also good. In this way, when the pump 64 is driven, the expansion / contraction unit E can function as an actuator capable of spontaneous expansion / contraction by exerting thrust, adjusting the thrust by the pressure control valve V1, and the first on-off valve V2 and the second The direction of thrust can be controlled by opening and closing the on-off valve V3.

In this example, the side panel 2 has a communication passage 7 that communicates the pressure control valve V1 and the second on-off valve V3, but the arrangement of the first on-off valve V2 and the second on-off valve V3 is reversed. In this case, a high-pressure side passage communicating with the pressure control valve V1 and the first on-off valve V2 may be connected by a communication passage. In that case, a low-pressure side passage communicating with the tank 56 is formed in the holding block 1 so as to communicate with the pressure control valve V1 and the second on-off valve V3, and a high-pressure side passage leading to the rod side chamber 54 is first opened and closed. What is necessary is just to connect to the upstream of the pressure control valve V1 through a connection channel | path while connecting to the valve V2.

In this example, the first on-off valve V2 and the second on-off valve V3 are mounted on the valve block B via the valve portion housing member 9, but the structure of the valve portion housing member 9 in the valve block B is a holding block. These may be integrated into 1 to form a single part.

The preferred embodiments of the present invention have been described in detail above, but modifications, changes, and changes can be made without departing from the scope of the claims.

This application claims priority based on Japanese Patent Application No. 2016-216510 filed with the Japan Patent Office on November 4, 2016, the entire contents of which are incorporated herein by reference.

Claims

A valve block,
A holding block in which the pressure control valve, the first on-off valve and the second on-off valve are integrated;
A side panel mounted on the holding block,
The side panel includes a communication passage that communicates the first on-off valve or the second on-off valve with the pressure control valve.
The valve block according to claim 1,
The holding block is
A high-pressure side passage that opens from a position removed from the mounting portion on which the side panel is mounted and communicates with the upstream of the pressure control valve and the first on-off valve;
An on-off valve passage that opens from a position away from the mounting portion and communicates with the first on-off valve and the second on-off valve;
A first low-pressure side passage that opens from the mounting portion and communicates with the downstream of the pressure control valve;
A second low-pressure side passage that opens from a position away from the mounting portion and communicates with the second on-off valve and the mounting portion;
The communication passage is a valve block that connects the first low-pressure side passage and the second low-pressure side passage.
The valve block according to claim 2,
The high-pressure side passage is
A first hole that opens from a position removed from the mounting portion of the holding block and communicates with the first on-off valve;
A second hole leading to the pressure control valve;
A third hole that opens from the mounting portion and communicates the first hole and the second hole;
The on-off valve passage is
A fourth hole opening from a position removed from the mounting portion of the holding block;
A fifth hole communicating with the first on-off valve and the second on-off valve;
A sixth hole that opens from the mounting portion and communicates the fourth hole and the fifth hole;
The side panel closes an opening in the mounting portion of the third hole and the sixth hole.
The valve block according to claim 3, wherein the side panel is
A first pressure sensor for detecting the pressure of the third hole;
The valve block according to claim 3, further comprising a second pressure sensor that detects a pressure of the sixth hole.