CN117989379A - Solenoid valve manifold - Google Patents

Abstract

The solenoid valve manifold includes a solenoid valve, a control unit, a base unit, and a spacer interposed between the solenoid valve and the base unit. A first gasket is interposed between a valve portion of the solenoid valve and the spacer. A second spacer is interposed between the spacer and the base portion. The spacer has a relay block having a relay connector portion, a spacer block arranged in a row with the relay block and having a plurality of connecting flow passages formed therein, and a connecting mechanism for connecting the relay block and the spacer block to each other. The connection mechanism connects the relay block and the spacer block to each other in a state allowing movement in the arrangement direction and the stacking direction.

Description

Solenoid valve manifold

Technical Field

The present disclosure relates to a solenoid valve manifold.

Background

For example, as disclosed in japanese patent application laid-open No. 2004-36841, a solenoid valve manifold may include a solenoid valve, a control unit, a base unit, and a spacer. The solenoid valve has a valve portion and a solenoid portion. The valve portion has a plurality of ports. The solenoid valve has a solenoid valve side connector portion. The solenoid valve side connector portion is electrically connected to the solenoid valve portion. The control unit has a circuit board. The circuit board controls driving of the solenoid valve. The base portion has a control portion. The base portion has a base-side connector portion and a plurality of communication flow passages. The base-side connector portion is electrically connected to the circuit board. The communication channels are respectively communicated with the corresponding ports. The spacer has a relay connector section and a plurality of connecting flow passages. The relay connector section connects the solenoid valve side connector section and the base side connector section to each other. The plurality of connecting runners respectively connect the corresponding ports with the corresponding communicating runners.

A first gasket is interposed between the valve portion and the spacer. The first gasket inhibits leakage of fluid flowing between each port and the corresponding connecting flow passage from between the valve portion and the spacer. A second spacer is interposed between the spacer and the base portion. The second gasket suppresses leakage of fluid flowing between each of the connection flow passages and the corresponding communication flow passage from between the spacer and the base portion.

The spacer is formed with a screw insertion hole through which a screw passing through the valve portion is inserted. An internal screw hole into which a screw is screwed is formed in the base portion. The screw penetrating the valve portion is screwed into the female screw hole through the screw insertion hole, whereby the solenoid valve and the spacer are fixed to the base portion.

Disclosure of Invention

Problems to be solved by the invention

In assembling such a solenoid valve manifold, first, the spacer is arranged with respect to the base portion while connecting the relay connector portion and the base side connector portion in a state in which the relay connector portion is aligned with respect to the base side connector portion. Next, the solenoid valve is disposed with respect to the spacer while the solenoid valve side connector portion is connected to the relay connector portion in a state in which the solenoid valve side connector portion is aligned with respect to the relay connector portion. Then, the screw passing through the valve portion is passed through the screw insertion hole and screwed into the female screw hole.

At this time, dimensional tolerances between the base side connector portion and the relay connector portion, dimensional tolerances between the relay connector portion and the solenoid valve connector portion, and the like accumulate, whereby the positions of the screws and the screw insertion holes after passing through the valve portion may be shifted. In this way, the screw passing through the valve portion may not pass through the screw insertion hole, and the solenoid valve manifold may not be assembled.

In addition, when the solenoid valve manifold is assembled, for example, if the spacer interferes with the periphery of the base-side connector portion in the base portion, the second spacer may not be sufficiently pressed by the spacer. Thus, the sealability of the second gasket is lowered. Therefore, it is desirable to design the solenoid valve manifold in the following manner: when the solenoid valve manifold is assembled, the spacer does not interfere with the periphery of the base-side connector portion in the base portion, and the second spacer can be sufficiently pressed by the spacer. In such a solenoid valve manifold, when the solenoid valve is disposed with respect to the spacer, there is a concern that the solenoid valve is liable to interfere with the periphery of the relay connector portion in the spacer due to a dimensional tolerance between the spacer and the solenoid valve. As a result, the first gasket may not be sufficiently pressed by the solenoid valve. Thus, the sealability of the first gasket is reduced, and the reliability of the solenoid valve manifold is lowered.

Therefore, it is desirable to achieve an improvement in the assemblability of the solenoid valve manifold and to improve the reliability of the solenoid valve manifold.

Means for solving the problems

The solenoid valve manifold according to one embodiment of the present disclosure includes: a solenoid valve having a valve portion and an electromagnetic portion; a control unit having a circuit board for controlling the driving of the solenoid valve; a base portion having the control portion; and a spacer interposed between the solenoid valve and the base portion. The valve portion has a plurality of ports. The solenoid valve has a solenoid valve side connector portion electrically connected to the solenoid portion. The base portion has: a base-side connector portion electrically connected to the circuit board; and a plurality of communication flow passages, wherein a plurality of the communication flow passages are respectively communicated with a plurality of the ports. The spacer has: a relay connector portion that connects the solenoid valve side connector portion and the base side connector portion to each other; and a plurality of connecting runners, wherein the connecting runners respectively connect the corresponding ports with the corresponding communicating runners. A first gasket is interposed between the valve portion and the spacer, the first gasket suppressing leakage of fluid flowing between each of the ports and the corresponding connection flow passage from between the valve portion and the spacer. A second gasket is interposed between the spacer and the base portion, the second gasket suppressing leakage of fluid flowing between each of the connection flow passages and the corresponding communication flow passage from between the spacer and the base portion. The solenoid valve and the spacer are fixed to the base portion by screws. The spacer is formed with a screw insertion hole through which the screw inserted through the valve portion is inserted. An internal thread hole into which the screw is screwed is formed in the base portion. The spacer has: a relay block having the relay connector section; a spacer block arranged in parallel with the relay block and having a plurality of the connecting flow passages and the screw insertion holes formed therein; and a connecting mechanism that connects the relay block and the spacer block to each other. The first gasket is interposed between the valve portion and the spacer block. The second gasket is interposed between the spacer block and the base portion. When the direction in which the relay blocks and the spacer blocks are arranged is an arrangement direction and the direction in which the solenoid valve, the spacer, and the base portion are stacked is a stacking direction, the connection mechanism connects the relay blocks and the spacer blocks to each other in a state in which the relay blocks and the spacer blocks are allowed to move in the arrangement direction and the stacking direction.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, the solenoid valve manifold can be improved in assembly and reliability.

Drawings

Fig. 1 is a cross-sectional view showing a solenoid valve manifold in an embodiment.

Fig. 2 is an exploded perspective view illustrating the solenoid valve, the spacer, and the base portion of fig. 1.

Fig. 3 is an exploded perspective view illustrating the relay block and the spacer block of fig. 2.

Fig. 4 is a perspective view illustrating a portion of the spacer block of fig. 3.

Fig. 5 is a perspective view illustrating a portion of the spacer block of fig. 3.

Fig. 6 is a perspective view illustrating a portion of the relay block of fig. 3.

Fig. 7 is a view schematically showing the solenoid valve, the spacer, and the base portion of fig. 2.

Fig. 8 is a schematic view for explaining the function of the elastic portion provided in the solenoid valve manifold of fig. 1.

Fig. 9 is another schematic view for explaining the function of the elastic portion provided in the solenoid valve manifold of fig. 1.

Detailed Description

An embodiment of the solenoid valve manifold will be described below with reference to fig. 1 to 9.

< Summary of solenoid valve manifold >

As shown in fig. 1, the solenoid valve manifold 10 includes solenoid valves 11. The solenoid valve 11 includes a valve portion 12, a first pilot solenoid valve V1, and a second pilot solenoid valve V2. The solenoid valve 11 is a pilot type solenoid valve of a double solenoid type. The solenoid valve manifold 10 further includes a control unit 40, a base unit 30, and a spacer 50. The spacer 50 is interposed between the solenoid valve 11 and the base portion 30. The solenoid valve 11, the spacer 50, and the base portion 30 are laminated in this order. In the following description, the direction in which the solenoid valve 11, the spacer 50, and the base portion 30 are stacked is referred to as "stacking direction Y1".

The valve portion 12 has a valve housing 13. The valve housing 13 has a rectangular block shape. The valve housing 13 has a valve body 14, a first connecting block 15 and a second connecting block 16. The valve body 14 has a rectangular block shape. The first connecting block 15 is connected to a first end of the valve body 14 in the longitudinal direction. The second connecting block 16 is connected to a second end of the valve body 14 in the longitudinal direction. The valve body 14 has a main body facing surface 14a facing the spacer 50.

The valve housing 13 has a spool bore 17. A spool hole 17 is formed in the valve body 14. The slide valve hole 17 is in a circular hole shape. The spool hole 17 extends in the longitudinal direction of the valve body 14. The first end of the spool hole 17 opens at a first end surface in the longitudinal direction of the valve body 14. The second end of the spool hole 17 opens at a second end surface in the longitudinal direction of the valve body 14. Thus, the spool hole 17 penetrates the valve body 14 in the longitudinal direction.

The solenoid valve 11 has a spool valve 18. The spool 18 is accommodated in the spool hole 17. The spool 18 is accommodated in the spool hole 17 in a state in which the axial direction of the spool 18 coincides with the axial direction of the spool hole 17. The spool 18 is housed so as to be reciprocatingly movable in the spool hole 17.

The solenoid valve 11 has a supply port P, a first output port a, a second output port B, a first discharge port R1, and a second discharge port R2. Therefore, the solenoid valve 11 of the present embodiment is a five-port solenoid valve. The supply port P, the first output port a, the second output port B, the first discharge port R1, and the second discharge port R2 are formed in the valve body 14. The supply port P, the first output port a, the second output port B, the first discharge port R1, and the second discharge port R2 are ports formed in the valve portion 12. Thus, the valve portion 12 has a plurality of ports. The supply port P, the first output port a, the second output port B, the first discharge port R1, and the second discharge port R2 communicate with the spool hole 17, respectively.

The first discharge port R1, the first output port a, the supply port P, the second output port B, and the second discharge port R2 are arranged in this order from the first end toward the second end in the longitudinal direction of the valve body 14. The first ends of the supply port P, the first output port a, the second output port B, the first discharge port R1, and the second discharge port R2 are respectively communicated with the spool hole 17. The second ends of the supply port P, the first output port a, the second output port B, the first discharge port R1, and the second discharge port R2 are open to the main body facing surface 14a of the valve body 14.

The solenoid valve 11 has a first piston 19 and a second piston 20. The first piston 19 has a circular plate shape. The first piston 19 is coupled to a first end of the spool valve 18. The first piston 19 moves integrally with the spool valve 18. The second piston 20 has a disc shape. The second piston 20 is coupled to a second end of the spool valve 18. The second piston 20 moves integrally with the spool valve 18.

A first piston housing recess 21 having a circular hole shape is formed in the first connecting block 15. The first piston 19 is accommodated in the first piston accommodation recess 21 so as to be reciprocable. The first piston housing recess 21 and the first piston 19 define a first pilot pressure application chamber 22. The discharge pilot fluid is supplied to the first pilot pressure application chamber 22.

A second piston housing recess 23 having a circular hole shape is formed in the second connecting block 16. The second piston 20 is reciprocatingly accommodated in the second piston accommodation recess 23. The second piston housing recess 23 and the second piston 20 define a second pilot pressure application chamber 24. The discharge pilot fluid is supplied to the second pilot pressure application chamber 24.

The base portion 30 has a manifold block 31. The manifold block 31 has a rectangular block shape. The manifold block 31 has a bearing surface 31a. The spacer 50 is carried on the carrying surface 31a. The length direction of the manifold block 31 coincides with the length direction of the valve housing 13.

The manifold block 31 has a supply flow passage 32, a first output flow passage 33, a second output flow passage 34, a first discharge flow passage 35, and a second discharge flow passage 36. The supply flow path 32, the first output flow path 33, the second output flow path 34, the first discharge flow path 35, and the second discharge flow path 36 are opened to the bearing surface 31a, respectively.

The end of the supply flow path 32 opposite to the bearing surface 31a is connected to a fluid supply source, not shown, for example, via a pipe or the like. The end of the first output flow path 33 opposite to the bearing surface 31a and the end of the second output flow path 34 opposite to the bearing surface 31a are connected to a fluid pressure device, not shown, for example, via a pipe or the like. The end of the first discharge flow path 35 on the opposite side from the bearing surface 31a and the end of the second discharge flow path 36 on the opposite side from the bearing surface 31a communicate with the atmosphere via, for example, a pipe or the like.

The control section 40 is built in the manifold block 31. Thus, the base portion 30 has a control portion 40. The control unit 40 has a circuit board 41. For example, power from an external control device such as a Programmable Logic Controller (PLC), not shown, is supplied to the circuit board 41. The circuit board 41 is built in the manifold block 31. The circuit board 41 controls the driving of each of the first pilot solenoid valve V1 and the second pilot solenoid valve V2. Accordingly, the circuit board 41 controls the driving of the solenoid valve 11.

The solenoid valve 11 has a first solenoid portion S1 and a second solenoid portion S2 as solenoid portions. The first pilot solenoid valve V1 has a first solenoid portion S1. The first pilot solenoid valve V1 supplies and discharges pilot fluid to and from the first pilot pressure application chamber 22. When a voltage is applied from the circuit board 41 to the first solenoid portion S1, the first pilot solenoid valve V1 supplies compressed fluid from a fluid supply source, not shown, as pilot fluid to the first pilot pressure application chamber 22. On the other hand, when the voltage application from the circuit board 41 to the first solenoid portion S1 is stopped, the first pilot solenoid valve V1 stops supplying the compressed fluid from the fluid supply source to the first pilot pressure application chamber 22. Then, the first pilot solenoid valve V1 discharges the pilot fluid in the first pilot pressure application chamber 22 to the atmosphere.

The second pilot electromagnetic valve V2 has a second electromagnetic portion S2. The second pilot solenoid valve V2 supplies and discharges the pilot fluid to and from the second pilot pressure application chamber 24. When a voltage is applied from the circuit board 41 to the second solenoid portion S2, the second pilot solenoid valve V2 supplies the compressed fluid from the fluid supply source as a pilot fluid to the second pilot pressure application chamber 24. On the other hand, when the supply of the voltage from the circuit board 41 to the second solenoid portion S2 is stopped, the second pilot solenoid valve V2 stops the supply of the compressed fluid from the fluid supply source to the second pilot pressure application chamber 24. Then, the second pilot solenoid valve V2 discharges the pilot fluid in the second pilot pressure acting chamber 24 to the atmosphere.

The spool valve 18 is switchable between a first position and a second position. For example, the voltage is applied from the circuit board 41 to the first electromagnetic portion S1, and the voltage is stopped from being applied from the circuit board 41 to the second electromagnetic portion S2. In this case, the compressed fluid from the fluid supply source is supplied as the pilot fluid to the first pilot pressure application chamber 22 by the first pilot solenoid valve V1. On the other hand, the pilot fluid in the second pilot pressure application chamber 24 is discharged to the atmosphere by the second pilot electromagnetic valve V2. Thereby, the spool 18 moves toward the second piston housing recess 23. As a result, the spool valve 18 is switched to the first position in which the supply port P and the first output port a communicate with each other and the second output port B and the second discharge port R2 communicate with each other. When the spool 18 is switched to the first position, the supply port P and the second output port B are cut off, and the first output port a and the first discharge port R1 are cut off.

For example, the voltage application from the circuit board 41 to the first electromagnetic portion S1 is stopped, and the voltage application from the circuit board 41 to the second electromagnetic portion S2 is performed. In this case, the second pilot solenoid valve V2 supplies the compressed fluid from the fluid supply source as the pilot fluid to the second pilot pressure application chamber 24. On the other hand, the pilot fluid in the first pilot pressure application chamber 22 is discharged to the atmosphere by the first pilot solenoid valve V1. Thereby, the spool 18 moves toward the first piston housing recess 21. As a result, the spool valve 18 is switched to the second position in which the supply port P and the second output port B communicate with each other and the first output port a and the first discharge port R1 communicate with each other. When the spool 18 is switched to the second position, the supply port P and the first output port a are cut off, and the second output port B and the second discharge port R2 are cut off.

In this way, the discharge pilot fluid is supplied from the first pilot solenoid valve V1 to the first pilot pressure application chamber 22, and the discharge pilot fluid is supplied from the second pilot solenoid valve V2 to the second pilot pressure application chamber 24. Thereby, the spool 18 reciprocates between the first position and the second position in the spool hole 17. Then, the communication between the ports is switched by switching the spool valve 18 between the first position and the second position. Accordingly, the valve portion 12 switches communication between the plurality of ports by supplying and discharging the pilot fluid to and from the first pilot pressure application chamber 22 and the second pilot pressure application chamber 24, respectively. In fig. 1, the spool valve 18 is shown in the second position.

The first pilot solenoid valve V1 and the second pilot solenoid valve V2 are integrally formed with each other and are arranged in a row. Specifically, the first pilot solenoid valve V1 and the second pilot solenoid valve V2 are located on the opposite side of the first connecting block 15 from the valve body 14. The first pilot solenoid valve V1 and the second pilot solenoid valve V2 are arranged in line with the first connecting block 15. The first pilot solenoid valve V1 and the second pilot solenoid valve V2 are integrally formed with the first connecting block 15. Therefore, the first pilot solenoid valve V1 and the second pilot solenoid valve V2 are integrally provided in the valve portion 12.

The solenoid valve 11 has a protrusion 25. The protruding portion 25 is a portion of the solenoid valve 11 that protrudes toward the base portion 30 than the main body facing surface 14a of the valve body 14. The protruding portion 25 includes a part of the first pilot solenoid valve V1 and a part of the second pilot solenoid valve V2.

The solenoid valve 11 has two solenoid valve side connector portions 26. One of the two solenoid valve side connector portions 26 is electrically connected to the first solenoid portion S1. The other of the two solenoid valve side connector portions 26 is electrically connected to the second solenoid portion S2. Therefore, the solenoid valve side connector portion 26 is electrically connected to the solenoid portion. Each solenoid valve side connector portion 26 has a solenoid valve side cylindrical portion 27. Each solenoid valve side cylindrical portion 27 protrudes from the tip end surface of the protruding portion 25. A solenoid valve side lip seal 28 is mounted on the outer peripheral surface of each solenoid valve side cylindrical portion 27. The solenoid valve side lip seal 28 is made of rubber. The solenoid valve side lip seal 28 is annular.

As shown in fig. 2, the two solenoid valve side connector portions 26 are arranged in the arrangement direction of the first pilot solenoid valve V1 and the second pilot solenoid valve V2. Therefore, the arrangement direction of the two solenoid valve side connector portions 26 matches the arrangement direction of the first pilot solenoid valve V1 and the second pilot solenoid valve V2.

The solenoid valve 11 has two bosses 29. Each of the protruding portions 29 is provided on the protruding portion 25. One of the two protruding portions 29 protrudes from one of the two side surfaces of the protruding portion 25. The other of the two protruding portions 29 protrudes from the other of the two side surfaces of the protruding portion 25. Each of the projections 29 has a quadrangular prism shape, and protrudes from the main body facing surface 14a toward the spacer 50.

As shown in fig. 1, the base portion 30 includes a connector member 42. The connector member 42 has two base-side connector portions 43. Thus, the base portion 30 has a base-side connector portion 43. Each base-side connector portion 43 is electrically connected to the circuit board 41.

As shown in fig. 2, the base portion 30 has a fitting recess 44. The fitting recess 44 is formed in the bearing surface 31a. The fitting recess 44 has a bottom surface 44a and two side surfaces 44b. The bottom surface 44a has a flat surface shape. The bottom surface 44a extends parallel to the bearing surface 31a. Each side surface 44b extends in a direction orthogonal to the bottom surface 44 a. Each side 44b extends from the bottom 44 a. Each side 44b is continuous with the bearing surface 31a. Each side surface 44b connects the bottom surface 44a with the bearing surface 31a.

The base portion 30 has two base insertion openings 45. Each of the base insertion openings 45 opens at a bottom surface 44a of the fitting recess 44. Each base insertion port 45 includes a corresponding base-side connector portion 43 on the inner side. The two base insertion openings 45 are arranged in the arrangement direction of the first pilot solenoid valve V1 and the second pilot solenoid valve V2. Therefore, the arrangement direction of the two base insertion openings 45 matches the arrangement direction of the first pilot solenoid valve V1 and the second pilot solenoid valve V2. Two recesses 46 are provided in the base portion 30. Each recess 46 is formed in each side surface 44b. Each recess 46 opens onto each side surface 44b and the bearing surface 31 a.

< Summary of spacer >

The spacer 50 includes a relay block 51, a spacer block 71, and a coupling mechanism 80. The coupling mechanism 80 couples the relay block 51 and the spacer block 71 to each other.

The spacer 71 has a rectangular block shape. The spacer 71 has a bearing surface 71a. A part of the solenoid valve 11 is supported on the support surface 71a. The longitudinal direction of the spacer 71 coincides with the longitudinal direction of the valve housing 13. The spacer 71 has a spacer facing surface 71b facing the bearing surface 31a of the manifold block 31.

The relay block 51 has a rectangular block shape. The relay block 51 has a bearing surface 51a. A part of the solenoid valve 11 is supported on the support surface 51a. The longitudinal direction of the relay block 51 coincides with the longitudinal direction of the valve housing 13. The relay block 51 has a relay block facing surface 51b facing the bearing surface 31a of the manifold block 31.

The spacer blocks 71 are arranged in line with the relay blocks 51. The longitudinal direction of the spacer 71 coincides with the longitudinal direction of the relay block 51. The relay block 51 and the spacer block 71 are arranged in the arrangement direction of the first pilot solenoid valve V1 and the second pilot solenoid valve V2. Therefore, the direction in which the relay block 51 and the spacer block 71 are aligned coincides with the direction in which the first pilot solenoid valve V1 and the second pilot solenoid valve V2 are aligned. In the following description, the direction in which the relay blocks 51 and the spacer blocks 71 are arranged is referred to as "arrangement direction X1".

The spacer 71 has a first facing surface 71c facing the relay blocks 51 in the arrangement direction X1. The relay block 51 has a second facing surface 51c facing the first facing surface 71c in the arrangement direction X1.

As shown in fig. 1, the spacer 50 has a supply connection flow passage 52, a first output connection flow passage 53, a second output connection flow passage 54, a first discharge connection flow passage 55, and a second discharge connection flow passage 56. The supply connection flow passage 52, the first output connection flow passage 53, the second output connection flow passage 54, the first discharge connection flow passage 55, and the second discharge connection flow passage 56 are formed in the spacer 71. The first ends of the supply connection flow path 52, the first output connection flow path 53, the second output connection flow path 54, the first discharge connection flow path 55, and the second discharge connection flow path 56 are opened at the bearing surface 71 a. The second ends of the supply connection flow passage 52, the first output connection flow passage 53, the second output connection flow passage 54, the first discharge connection flow passage 55, and the second discharge connection flow passage 56 are opened at the spacer facing surface 71 b.

The supply connection flow passage 52 connects the supply port P and the supply flow passage 32 to each other. The first output connection flow passage 53 connects the first output port a and the first output flow passage 33 to each other. The second output connecting flow passage 54 interconnects the second output port B with the second output flow passage 34. The first discharge connection flow passage 55 connects the first discharge port R1 and the first discharge flow passage 35 to each other. The second discharge connection flow passage 56 connects the second discharge port R2 and the second discharge flow passage 36 to each other.

Accordingly, the supply flow passage 32 communicates with the supply port P via the supply connection flow passage 52. The first output flow passage 33 communicates with the first output port a via the first output connection flow passage 53. The second output flow passage 34 communicates with the second output port B via a second output connection flow passage 54. The first discharge flow passage 35 communicates with the first discharge port R1 via a first discharge connection flow passage 55. The second discharge flow passage 36 communicates with the second discharge port R2 via a second discharge connection flow passage 56.

Accordingly, the supply flow path 32, the first output flow path 33, the second output flow path 34, the first discharge flow path 35, and the second discharge flow path 36 are communication flow paths that communicate with the corresponding ports, respectively. Accordingly, the base portion 30 has a plurality of communication flow passages that communicate with the corresponding ports, respectively. The supply connection flow path 52, the first output connection flow path 53, the second output connection flow path 54, the first discharge connection flow path 55, and the second discharge connection flow path 56 are connection flow paths that connect the corresponding ports and the corresponding communication flow paths, respectively. Accordingly, the spacer 50 has a plurality of connection flow passages that interconnect the corresponding ports and the corresponding communication flow passages. That is, a plurality of connecting flow passages are formed in the spacer 71.

The fluid from the supply flow path 32 is supplied to the supply port P via the supply connection flow path 52. When the spool 18 is switched to the first position, the fluid supplied to the supply port P is output to the fluid pressure device through the first output port a, the first output connection flow passage 53, and the first output flow passage 33. Then, the fluid from the fluid pressure device is discharged from the second discharge flow passage 36 to the outside via the second output flow passage 34, the second output connection flow passage 54, the second output port B, the second discharge port R2, and the second discharge connection flow passage 56.

On the other hand, when the spool 18 is switched to the second position, the fluid supplied to the supply port P is output to the fluid pressure device through the second output port B, the second output connection flow passage 54, and the second output flow passage 34. Then, the fluid from the fluid pressure device is discharged from the first discharge flow passage 35 to the outside via the first output flow passage 33, the first output connection flow passage 53, the first output port a, the first discharge port R1, and the first discharge connection flow passage 55.

The spacer 50 is provided with a pressure reducing valve V3. The pressure reducing valve V3 reduces the pressure of the fluid supplied to the primary side of the connecting flow path 52, and leads the fluid to the secondary side of the connecting flow path 52. The pressure reducing valve V3 reduces the pressure of the primary side flow path of the supply connection flow path 52 so that the pressure of the secondary side flow path of the supply connection flow path 52 becomes a set pressure.

The relay block 51 has a protrusion 57. The protruding portion 57 protrudes from the relay block facing surface 51 b. The protruding portion 57 can be fitted into the fitting recess 44.

The relay block 51 has two relay connector sections 58. Thus, the spacer 50 has the relay connector section 58. Each relay connector section 58 has a relay cylindrical section 59. Each relay cylindrical portion 59 is a first end portion of each relay connector portion 58. Each relay connector section 58 has a relay terminal 60. Each relay terminal 60 is a second end of each relay connector section 58.

As shown in fig. 2, each relay cylindrical portion 59 protrudes from the tip end surface of the protruding portion 57. A relay-side lip seal 61 is mounted on the outer peripheral surface of each relay cylindrical portion 59. The relay-side lip seal 61 is made of rubber. The relay-side lip seal 61 is annular. The two relay connector portions 58 are arranged in the arrangement direction of the first pilot solenoid valve V1 and the second pilot solenoid valve V2. Therefore, the arrangement direction of the two relay connector sections 58 matches the arrangement direction of the first pilot solenoid valve V1 and the second pilot solenoid valve V2.

Each relay cylindrical portion 59 is inserted into the corresponding base insertion port 45. Accordingly, the corresponding relay connector section 58 is inserted into each of the base insertion ports 45. A corresponding base-side connector portion 43 is inserted inside each relay cylindrical portion 59. Then, each relay cylindrical portion 59 is connected to the corresponding base-side connector portion 43. In this way, by inserting each relay cylindrical portion 59 into the corresponding base insertion port 45, each relay connector portion 58 is connected to the corresponding base-side connector portion 43.

The spacer 50 has two protrusions 62. Each of the projections 62 is provided on the protruding portion 57. One of the two protruding portions 62 protrudes from one of the two side surfaces of the protruding portion 57. The other of the two protruding portions 62 protrudes from the other of the two side surfaces of the protruding portion 57. Each of the protruding portions 62 has a quadrangular prism shape, and protrudes from the relay block facing surface 51b toward the base portion 30.

Each protruding portion 62 is fitted into the corresponding recessed portion 46 at the same time as the protruding portion 57 is fitted into the fitting recessed portion 44. By fitting each protruding portion 62 into the corresponding recessed portion 46, each relay cylindrical portion 59 is inserted into the corresponding base insertion port 45 while being positioned in the base insertion port 45. In this way, in a state where each relay connector section 58 is aligned with respect to the corresponding base side connector section 43, the spacer 50 is arranged with respect to the base section 30 while connecting each relay connector section 58 with the corresponding base side connector section 43.

Each relay-side lip seal 61 seals between each relay cylindrical portion 59 and the corresponding base insertion port 45. Accordingly, a rubber relay-side lip seal 61 for sealing between each relay cylindrical portion 59 and the corresponding base insertion port 45 is provided between the outer peripheral surface of each relay cylindrical portion 59 and the inner peripheral surface of the corresponding base insertion port 45.

The relay block 51 has a fitting recess 63. The fitting recess 63 is formed in the bearing surface 51a. The protruding portion 25 can be fitted into the fitting recess 63. The fitting recess 63 has a bottom surface 63a and two side surfaces 63b. The bottom surface 63a is flat. The bottom surface 63a extends parallel to the bearing surface 51a. Each side surface 63b extends in a direction orthogonal to the bottom surface 63 a. Each side 63b extends from the bottom 63 a. Each side 63b is continuous with the bearing surface 51a. Each side 63b interconnects the bottom 63a and the bearing surface 51a. Each side 63b faces a corresponding side of the protruding portion 25.

The relay block 51 has two relay insertion ports 64. Each relay insertion port 64 opens at the bottom surface 63a of the fitting recess 63. Each relay terminal 60 is disposed inside each relay insertion port 64. Therefore, each relay insertion port 64 includes a corresponding relay connector section 58 on the inner side. The two relay insertion ports 64 are arranged in the arrangement direction of the first pilot solenoid valve V1 and the second pilot solenoid valve V2. Therefore, the arrangement direction of the two relay insertion ports 64 matches the arrangement direction of the first pilot solenoid valve V1 and the second pilot solenoid valve V2.

Each solenoid valve side cylindrical portion 27 is inserted into a corresponding relay insertion port 64. Accordingly, the corresponding solenoid valve side connector portion 26 is inserted into each relay insertion port 64. A corresponding relay terminal 60 is inserted inside each solenoid valve side cylindrical portion 27. Accordingly, the corresponding relay connector portion 58 is inserted inside each solenoid valve side cylindrical portion 27. Then, each solenoid valve side cylindrical portion 27 is connected to the corresponding relay terminal 60. Thus, by inserting each solenoid valve side cylindrical portion 27 into the corresponding relay insertion port 64, each solenoid valve side connector portion 26 is connected to the corresponding relay connector portion 58. In this way, each relay connector section 58 is electrically connected to the corresponding solenoid valve side connector section 26. Accordingly, each relay connector section 58 connects the corresponding solenoid valve side connector section 26 and the corresponding base side connector section 43 to each other.

Two concave portions 65 are provided in the relay block 51. Each concave portion 65 is formed on each side surface 63b. Each recess 65 opens onto each side surface 63b and the bearing surface 51 a. Each concave portion 65 is fitted with a corresponding convex portion 29. Each protruding portion 29 is fitted into the corresponding recessed portion 65 while the protruding portion 25 is fitted into the fitting recessed portion 63. By fitting each protruding portion 29 into the corresponding recessed portion 65, each solenoid valve side cylindrical portion 27 is inserted into the corresponding relay insertion port 64 in a state of being positioned in the relay insertion port 64. In this way, the solenoid valve 11 is arranged with respect to the spacer 50 while connecting each solenoid valve side connector portion 26 to the corresponding relay connector portion 58 in a state where each solenoid valve side connector portion 26 is aligned with respect to the corresponding relay connector portion 58.

Each solenoid valve side lip seal 28 seals between each solenoid valve side cylindrical portion 27 and the corresponding relay insertion port 64. Therefore, a rubber solenoid valve side lip seal 28 is provided between the outer peripheral surface of each solenoid valve side cylindrical portion 27 and the inner peripheral surface of the corresponding relay insertion port 64, and seals between each solenoid valve side cylindrical portion 27 and the corresponding relay insertion port 64.

The solenoid valve 11 and the spacer 50 are fixed to the base portion 30 by a screw B1. A through hole 13h through which the screw B1 passes is formed in the valve housing 13 of the solenoid valve 11. Two through holes 13h are formed in the valve housing 13.

Two screw insertion holes 71h are formed in the spacer 50. Each screw insertion hole 71h is formed in the spacer block 71. Accordingly, a screw insertion hole 71h is formed in the spacer 71. The screws B1 penetrating the corresponding through holes 13h are inserted into the respective screw insertion holes 71h. Accordingly, the corresponding screw B1 penetrating the valve portion 12 is inserted into each screw insertion hole 71h.

Two female screw holes 37 are formed in the base portion 30. A corresponding screw B1 is screwed into each female screw hole 37. Each internally threaded hole 37 is formed in the bearing surface 31a of the manifold block 31. The solenoid valve 11 and the spacer 71 are fixed to the base portion 30 by screwing each screw B1 inserted into the corresponding screw insertion hole 71h into the corresponding female screw hole 37.

< First gasket and second gasket >

The solenoid valve manifold 10 is provided with a first gasket G1. The first gasket G1 is annular. The first gasket G1 is, for example, thin plate-shaped. The first gasket G1 is interposed between the valve portion 12 and the spacer 71. Therefore, the first gasket G1 is interposed between the valve portion 12 and the spacer 50. The first gasket G1 seals between the valve portion 12 and the spacer 71.

The first gasket G1 suppresses leakage of the fluid flowing between the supply port P and the supply connection flow passage 52 from between the valve portion 12 and the spacer 50. The first gasket G1 suppresses leakage of the fluid flowing between the first output port a and the first output connection flow passage 53 from between the valve portion 12 and the spacer 50. The first gasket G1 suppresses leakage of the fluid flowing between the second output port B and the second output connection flow passage 54 from between the valve portion 12 and the spacer 50. The first gasket G1 suppresses leakage of the fluid flowing between the first discharge port R1 and the first discharge connection flow passage 55 from between the valve portion 12 and the spacer 50. The first gasket G1 suppresses leakage of the fluid flowing between the second discharge port R2 and the second discharge connection flow passage 56 from between the valve portion 12 and the spacer 50. Therefore, the first gasket G1 suppresses leakage of the fluid flowing between each port and the corresponding connection flow passage from between the valve portion 12 and the spacer 50.

The solenoid valve manifold 10 is provided with a second gasket G2. The second gasket G2 is annular. The second gasket G2 is, for example, thin plate-shaped. The second gasket G2 is interposed between the spacer 71 and the base portion 30. Therefore, the second gasket G2 is interposed between the spacer 50 and the base portion 30. The second gasket G2 seals between the spacer 71 and the base 30.

The second gasket G2 suppresses leakage of the fluid flowing between the supply connection flow passage 52 and the supply flow passage 32 from between the spacer 50 and the base portion 30. The second gasket G2 suppresses leakage of the fluid flowing between the first output connection flow passage 53 and the first output flow passage 33 from between the spacer 50 and the base portion 30. The second gasket G2 suppresses leakage of the fluid flowing between the second output connection flow passage 54 and the second output flow passage 34 from between the spacer 50 and the base portion 30. The second gasket G2 suppresses leakage of the fluid flowing between the first discharge connection flow passage 55 and the first discharge flow passage 35 from between the spacer 50 and the base portion 30. The second gasket G2 suppresses leakage of the fluid flowing between the second discharge connection flow passage 56 and the second discharge flow passage 36 from between the spacer 50 and the base portion 30. Therefore, the second gasket G2 suppresses leakage of the fluid flowing between each of the connection flow passages and the corresponding communication flow passage from between the spacer 50 and the base portion 30.

< Connection mechanism >

As shown in fig. 2 and 3, the coupling mechanism 80 couples the relay block 51 and the spacer block 71 to each other.

As shown in fig. 4 and 5, the coupling mechanism 80 includes two first wall portions 81 and two rail portions 82. Each first wall portion 81 protrudes from the first opposing surface 71 c. Each of the first wall portions 81 has a long plate shape. The two first wall portions 81 extend parallel to each other in a state where the longitudinal direction coincides with the stacking direction Y1. Each of the first wall portions 81 extends in a direction orthogonal to the first opposing surface 71 c.

Each rail portion 82 has a long plate shape. The two rail portions 82 are bent and extended from the distal ends of the corresponding first wall portions 81 in directions approaching each other. The two rail portions 82 extend parallel to each other in a state where the longitudinal direction coincides with the stacking direction Y1. The length of each rail portion 82 in the longitudinal direction is the same as the length of each first wall portion 81 in the longitudinal direction.

As shown in fig. 3 and 6, the coupling mechanism 80 includes a guide portion 83, two restricting portions 84, a second wall portion 85, two elastic pieces 86, and two locking portions 87. The guide 83 protrudes from the second opposing surface 51 c. The guide 83 has a long plate shape. The guide portion 83 extends in a direction orthogonal to the second opposing surface 51c in a state where the longitudinal direction coincides with the stacking direction Y1. The thickness of the guide portion 83 is thinner than the width of the gap between the two rail portions 82. The guide portion 83 is guided in the stacking direction Y1 between the two rail portions 82.

Each restricting portion 84 has a long plate shape. The two restricting portions 84 are bent and extended from the distal ends of the guide portions 83 in directions away from each other. Each restricting portion 84 extends in a direction orthogonal to the guide portion 83 in a state where the longitudinal direction coincides with the stacking direction Y1. The length of each restricting portion 84 in the longitudinal direction is the same as the length of the guide portion 83 in the longitudinal direction. Each restricting portion 84 is disposed between the two first wall portions 81.

The second wall portion 85 protrudes from the second opposing surface 51 c. The second wall portion 85 has a long plate shape. The second wall portion 85 extends in a direction orthogonal to the second facing surface 51c in a state where the longitudinal direction coincides with the width direction of the relay block 51. The second wall portion 85 is continuous with the end portion of the guide portion 83 on the bearing surface 51a side and the end portions of the two restricting portions 84 on the bearing surface 51a side.

Each elastic piece 86 protrudes from the second wall portion 85 toward the relay block facing surface 51 b. Each elastic piece 86 has a long plate shape. Each elastic piece 86 extends in a direction orthogonal to the second wall portion 85 in a state where the longitudinal direction coincides with the stacking direction Y1 and the thickness direction coincides with the thickness direction of the guide portion 83. Each elastic piece 86 is elastically deformable with the base end portion as a base point so as to flex in a direction approaching and separating from the guide portion 83.

The two locking portions 87 are bent and extended from the distal ends of the corresponding elastic pieces 86 in directions approaching each other. Each locking portion 87 is hook-shaped. Each locking portion 87 extends from the tip of each elastic piece 86 toward the guide portion 83.

As shown in fig. 4 and 5, the coupling mechanism 80 includes two inclined surfaces 88, two first flat surfaces 89, two engaged surfaces 90, and two second flat surfaces 91. Each inclined surface 88 is a part of the outer surface of each first wall portion 81. The two inclined surfaces 88 are inclined in the direction away from each other as they move away from the end of the corresponding first wall portion 81 on the bearing surface 71a side. Each first flat surface 89 is a part of the outer surface of each first wall portion 81. The two first flat surfaces 89 extend in the stacking direction Y1 from the end of the corresponding inclined surface 88 on the relay block facing surface 51b side. Each engaged surface 90 is a part of the outer surface of each first wall 81. The two engaged surfaces 90 extend in directions approaching each other from the end portions of the corresponding first flat surfaces 89 on the relay block facing surface 51b side. The corresponding locking portion 87 can be locked to each locked surface 90. The distance from the end of each first wall portion 81 on the side of the bearing surface 71a to each engaged surface 90 in the stacking direction Y1 is shorter than the distance from the second wall portion 85 to each engaging portion 87 in the stacking direction Y1. The second flat surfaces 91 extend from the end of the engaged surface 90 opposite to the first flat surface 89 toward the spacer opposing surface 71 b. The two second flat surfaces 91 extend parallel to each other. Each second flat surface 91 can pass through a gap between the corresponding locking portion 87 and the guide portion 83.

When the relay block 51 and the spacer block 71 are coupled by the coupling mechanism 80, first, each locking portion 87 is brought into contact with the corresponding inclined surface 88. In this state, the relay block 51 is forcibly moved in the stacking direction Y1 with respect to the spacer 71 toward the spacer facing surface 71 b. In this way, each elastic piece 86 elastically deforms so as to flex in a direction separating from the guide portion 83 with the base end portion as a base point. Then, the relay block 51 is moved relative to the spacer block 71 until each of the locking portions 87 moves along the corresponding inclined surface 88 and passes over the corresponding first flat surface 89. Thus, each elastic piece 86 returns to its original shape before elastic deformation, and each locking portion 87 is locked to the corresponding locked surface 90. In this way, the coupling mechanism 80 couples the relay block 51 and the spacer block 71 to each other by the engagement structure.

The relay block 51 and the spacer block 71 can relatively move in the direction of separating from each other in the arrangement direction X1 until each of the restricting portions 84 abuts against the corresponding guide rail portion 82. The relay block 51 and the spacer block 71 are relatively movable in the direction of approaching each other in the arrangement direction X1 until the respective restricting portions 84 come into contact with the first opposing surfaces 71 c.

With the spacer 71 fixed to the base portion 30, the relay block 51 can move in the stacking direction Y1 toward the solenoid valve 11 until each of the locking portions 87 comes into contact with the corresponding locked surface 90. In a state where the spacer 71 is fixed to the base portion 30, the relay block 51 is movable in the stacking direction Y1 toward the base portion 30 until the second wall portion 85 comes into contact with the first wall portions 81 and the guide rail portions 82.

In this way, the coupling mechanism 80 couples the relay block 51 and the spacer block 71 to each other by the engagement structure in a state allowing movement in the arrangement direction X1 and the stacking direction Y1.

< Elastomer >

As shown in fig. 3, the solenoid valve manifold 10 includes an elastic body 92. Two elastic bodies 92 are provided in the relay block 51. Each elastic body 92 is formed integrally with the relay block 51. Each elastic body 92 has a slender plate shape, and the bottom surface 63a, which is the surface of the relay block 51 on the solenoid valve 11 side, extends obliquely toward the solenoid valve 11. Each elastic body 92 is formed by cutting a part of the relay block 51. Each elastic body 92 is elastically deformable with the base end portion as a base point. The elastic body 92 biases the relay block 51 toward the base portion 30.

[ Effects of the embodiment ]

Next, the operation of the present embodiment will be described.

As shown in fig. 2, when the solenoid valve manifold 10 is assembled, the relay block 51 and the spacer block 71 are coupled in advance via the coupling mechanism 80. Then, by fitting each protruding portion 62 into the corresponding recessed portion 46, each relay cylindrical portion 59 is inserted into the corresponding base insertion port 45 in a state of being positioned in the base insertion port 45. In this way, in a state where each relay connector section 58 is aligned with respect to the corresponding base-side connector section 43, the spacer 50 is disposed with respect to the base section 30 while connecting each relay connector section 58 to the corresponding base-side connector section 43.

Next, by fitting each protruding portion 29 into the corresponding recessed portion 65, each solenoid valve side cylindrical portion 27 is inserted into the corresponding relay insertion port 64 in a state of being positioned in the relay insertion port 64. Thus, in a state where each solenoid valve side connector portion 26 is aligned with the corresponding relay connector portion 58, the solenoid valve 11 is arranged with respect to the spacer 50 while connecting each solenoid valve side connector portion 26 with the corresponding relay connector portion 58.

As shown in fig. 7, each screw B1 penetrating the valve portion 12 is passed through the corresponding screw insertion hole 71h and screwed into the corresponding female screw hole 37. At this time, dimensional tolerances between the respective base-side connector portions 43 and the corresponding relay connector portions 58, dimensional tolerances between the respective relay connector portions 58 and the corresponding solenoid-valve-side connector portions 26, and the like are superimposed. As a result, the positions of the screws B1 passing through the valve portion 12 and the corresponding screw insertion holes 71h may be shifted in the arrangement direction X1.

Even in such a case, the movement of the spacer 71 in the arrangement direction X1 with respect to the relay block 51 is allowed by the coupling mechanism 80. Thus, the installer adjusts the position of the spacer 71 so that each screw B1 is aligned with the position of the corresponding screw insertion hole 71 h. Then, each screw B1 passing through the valve portion 12 is passed through the corresponding screw insertion hole 71h and screwed into the corresponding female screw hole 37. Thereby, the solenoid valve 11 and the spacer 71 are fixed to the base portion 30.

In addition, consider the case where the solenoid valve manifold 10 is designed as follows: when the solenoid valve manifold 10 is assembled, the relay block 51 does not interfere with the periphery of each base-side connector portion 43 in the base portion 30, and the second gasket G2 can be sufficiently pressed by the spacer block 71. At this time, the movement of the relay block 51 in the stacking direction Y1 with respect to the spacer block 71 is allowed by the coupling mechanism 80. Therefore, when the solenoid valve 11 is disposed with respect to the spacer 50, even if there is a dimensional tolerance between the spacer 50 and the solenoid valve 11, the solenoid valve 11 is prevented from interfering with the surroundings of the relay connector portions 58 in the relay block 51. Thus, the first gasket G1 is sufficiently pressed by the solenoid valve 11. As a result, the sealability of the first gasket G1 and the second gasket G2 is improved.

As shown in fig. 8 and 9, the distal end portion of each elastic body 92 is pressed against the solenoid valve 11, so that the relay block 51 is biased toward the base portion 30 by a restoring force to be restored to the original shape. In this way, since the relay block 51 is biased toward the base portion 30 by the respective elastic bodies 92, the relay block 51 is prevented from moving in the stacking direction Y1 between the solenoid valve 11 and the base portion 30 after the assembly of the solenoid valve manifold 10 is completed. As a result, the problem of abrasion of the relay side lip seals 61 and the solenoid side lip seals 28 due to the movement of the relay block 51 between the solenoid valve 11 and the base portion 30 is easily avoided.

Effect of the embodiment

The following effects can be obtained in the above embodiments.

(1) The connection mechanism 80 connects the relay block 51 and the spacer block 71 to each other in a state allowing movement in the arrangement direction X1 and the stacking direction Y1. When the solenoid valve manifold 10 is assembled, for example, the positions of the screws B1 penetrating the valve portion 12 and the corresponding screw insertion holes 71h are shifted in the arrangement direction X1. Even in this case, the movement of the spacer 71 in the arrangement direction X1 with respect to the relay block 51 is allowed by the coupling mechanism 80. Therefore, the position of the spacer 71 can be adjusted, and each screw B1 can be aligned with the position of the corresponding screw insertion hole 71 h. As a result, each screw B1 penetrating the valve portion 12 can be inserted through the corresponding screw insertion hole 71h and screwed into the corresponding female screw hole 37, and the assembling performance of the solenoid valve manifold 10 can be improved.

In addition, consider the case where the solenoid valve manifold 10 is designed as follows: when the solenoid valve manifold 10 is assembled, the relay block 51 does not interfere with the periphery of the base-side connector portion 43 in the base portion 30, and the second gasket G2 can be sufficiently pressed by the spacer block 71. At this time, the movement of the relay block 51 in the stacking direction Y1 with respect to the spacer block 71 is allowed by the coupling mechanism 80. Therefore, when the solenoid valve 11 is disposed with respect to the spacer 50, even if there is a dimensional tolerance between the spacer 50 and the solenoid valve 11, the solenoid valve 11 is restrained from interfering with the periphery of the relay connector portion 58 in the relay block 51. Thus, the first gasket G1 can be sufficiently pressed by the solenoid valve 11. As a result, the sealability of the first gasket G1 and the second gasket G2 is improved, and the reliability of the solenoid valve manifold 10 is improved. In summary, the solenoid valve manifold 10 can be assembled with improved reliability, while the solenoid valve manifold 10 can be assembled with improved reliability.

(2) The solenoid valve manifold 10 includes an elastic body 92 that biases the relay block 51 toward the base portion 30. Accordingly, since the elastic body 92 biases the relay block 51 toward the base portion 30, the relay block 51 is prevented from moving in the stacking direction Y1 between the solenoid valve 11 and the base portion 30 after the solenoid valve manifold 10 is assembled. As a result, the problem of abrasion of the relay side lip seals 61 and the solenoid side lip seals 28 due to the movement of the relay block 51 between the solenoid valve 11 and the base portion 30 is easily avoided. Thus, the durability of each relay side lip seal 61 and each solenoid valve side lip seal 28 can be improved. Therefore, the reliability of the solenoid valve manifold 10 can be further improved.

(3) The elastic body 92 is formed in a long plate shape, integrally formed with the relay block 51, and extends obliquely from the solenoid valve 11 side surface of the relay block 51 toward the solenoid valve 11. The elastic body 92 having such a structure is suitable as an elastic body for biasing the relay block 51 toward the base portion 30. Further, for example, compared with the case where a component different from the elastic body 92 is provided as the elastic body between the relay block 51 and the base portion 30, the number of components can be reduced in the case where the elastic body 92 is provided between the relay block 51 and the base portion 30. Therefore, the assembly of the solenoid valve manifold 10 is simplified, and the improvement of the assembly of the solenoid valve manifold 10 can be further achieved.

(4) The coupling mechanism 80 is a snap-fit structure, and is suitable as a coupling mechanism that can easily couple the relay block 51 and the spacer block 71 in a state of allowing movement in the arrangement direction X1 and the stacking direction Y1.

(5) As described in the prior art, for example, a case is considered in which gaskets are interposed between the distal end surface of the protruding portion 57 and the bottom surface 44a of the fitting recess 44, and between the distal end surface of the protruding portion 25 and the bottom surface 63a of the fitting recess 63. In this case, the gasket, the first gasket G1, and the second gasket G2 need to be sufficiently pressed, respectively. It is difficult to ensure the sealability of each of the gasket, the first gasket G1, and the second gasket G2. Therefore, in the solenoid valve manifold 10 of the present embodiment, the relay side lip seal 61 and the solenoid valve side lip seal 28 are used instead of the gasket. Therefore, the sealing properties of the first gasket G1 and the second gasket G2 are easily ensured. As a result, the reliability of the solenoid valve manifold 10 can be improved.

Modification example

The above embodiment can be modified as follows. The above-described embodiments and the following modifications can be combined with each other within a range where technical contradiction does not occur.

In the embodiment, the elastic body 92 is formed in a long plate shape, is integrally formed with the relay block 51, and extends obliquely from the surface of the relay block 51 on the solenoid valve 11 side toward the solenoid valve 11. However, the elastic body 92 may not be of such a structure. For example, a member different from the elastic body 92 may be provided between the relay block 51 and the base portion 30 as the elastic body. In this case, the elastic body is, for example, a spring or a rubber elastic body.

In the embodiment, the solenoid valve manifold 10 may not include the elastic body 92.

In the embodiment, the coupling mechanism 80 is not limited to the engagement structure. In short, the coupling mechanism 80 may be configured to couple the relay block 51 and the spacer block 71 to each other in a state allowing movement in the arrangement direction X1 and the stacking direction Y1.

In the embodiment, the solenoid valve 11 may be a single-solenoid pilot type solenoid valve. In this case, the solenoid valve 11 has only one solenoid valve side connector portion 26. The relay block 51 has only one relay connector section 58. The base portion 30 has only one base-side connector portion 43.

In the embodiment, the solenoid valve 11 may be, for example, a four-port solenoid valve in which the second discharge port R2 is omitted. In short, the solenoid valve 11 may have at least one discharge port. The solenoid valve 11 may be a three-port solenoid valve having a supply port, an output port, and a discharge port.

Claims (4)

1. A solenoid valve manifold is provided with:

A solenoid valve having a valve portion and an electromagnetic portion;

A control unit having a circuit board for controlling the driving of the solenoid valve;

A base portion having the control portion; and

A spacer interposed between the solenoid valve and the base portion,

The valve portion has a plurality of ports and,

The electromagnetic valve has a electromagnetic valve side connector part electrically connected with the electromagnetic part,

The base portion has:

A base-side connector portion electrically connected to the circuit board; and

A plurality of communication flow passages, wherein the communication flow passages are respectively communicated with the ports,

The spacer has:

A relay connector portion that connects the solenoid valve side connector portion and the base side connector portion to each other; and

A plurality of connecting runners, wherein the connecting runners respectively connect the corresponding ports with the corresponding communicating runners,

A first gasket is interposed between the valve portion and the spacer, the first gasket suppressing leakage of fluid flowing between each of the ports and the corresponding connection flow passage from between the valve portion and the spacer,

A second gasket is interposed between the spacer and the base portion, the second gasket suppressing leakage of fluid flowing between each of the connecting flow passages and the corresponding communication flow passage from between the spacer and the base portion,

The solenoid valve and the spacer are fixed with respect to the base portion by screws,

A screw insertion hole is formed in the spacer, the screw penetrating the valve portion is inserted into the screw insertion hole,

An internal thread hole into which the screw is screwed is formed in the base portion,

The spacer has:

A relay block having the relay connector section;

a spacer block arranged in parallel with the relay block and having a plurality of the connecting flow passages and the screw insertion holes formed therein; and

A connecting mechanism for connecting the relay block and the spacer block to each other,

The first gasket is sandwiched between the valve portion and the spacer block,

The second gasket is sandwiched between the spacer block and the base portion,

When the direction in which the relay blocks and the spacer blocks are arranged is set as an arrangement direction and the direction in which the solenoid valve, the spacers, and the base portion are stacked is set as a stacking direction,

The connecting mechanism connects the relay block and the spacer block to each other in a state allowing movement in the arrangement direction and the stacking direction.

2. The solenoid valve manifold of claim 1, wherein,

The base portion has a base insertion opening into which the relay connector portion is inserted,

The base side connector part is arranged on the inner side of the base inserting port,

The relay connector part has a relay cylindrical part electrically connected with the solenoid valve side connector part,

The base-side connector portion is inserted into the inside of the relay cylinder portion,

The relay connector section is connected to the base-side connector section by the relay cylindrical section being inserted into the base insertion port,

A rubber relay lip seal for sealing between the relay cylindrical portion and the base insertion port is provided between the outer peripheral surface of the relay cylindrical portion and the inner peripheral surface of the base insertion port,

The relay block has a relay insertion port into which the solenoid valve side connector portion is inserted,

The relay connector part is arranged at the inner side of the relay insertion port,

The solenoid valve side connector part has a solenoid valve side cylindrical part, the relay connector part is inserted into the solenoid valve side cylindrical part,

The solenoid valve side connector portion is connected to the relay connector portion by the solenoid valve side cylindrical portion being inserted into the relay insertion port,

A rubber solenoid valve side lip seal for sealing between the solenoid valve side cylindrical portion and the relay insertion port is provided between the outer peripheral surface of the solenoid valve side cylindrical portion and the inner peripheral surface of the relay insertion port,

The solenoid valve manifold further includes an elastic body that biases the relay block toward the base portion.

3. The solenoid valve manifold of claim 2, wherein,

The elastic body is formed in a long plate shape, is integrally formed with the relay block, and extends obliquely from a surface of the relay block on the solenoid valve side toward the solenoid valve.

4. The solenoid valve manifold according to any one of claim 1 to claim 3, wherein,

The connecting mechanism connects the relay block and the spacer block to each other by a fastening structure in a state that the relay block and the spacer block are allowed to move in the arrangement direction and the stacking direction.