Valve device

Abstract

This valve device (10) comprises: a body (12) having a plurality of ports (26) through which a fluid flows; a valve element (16); and an operation part (24) that drives the valve element. The valve element is driven by rotating the operation part in a state in which the operation part is pushed into the body. The operation part includes an insertion part (108) having a space (114) into which a portion of the body is inserted when the operation part is pushed into the body. A plurality of through-holes (124) that communicate with the space are formed in the insertion part. A lock member (300) for preventing the insertion of a portion of the body into the space can be attached to the plurality of through-holes.

Description

Valve device

[0001] The present disclosure relates to a valve device.

[0002] In Japanese Patent Laid-Open No. 2023-18138, a valve assembly (valve device) is disclosed that can operate a valve actuator in a valve housing between an open position and a closed position by rotating a handle. The handle has a first opening and a second opening, and an indicator member having an opening is disposed inside the handle. In the valve assembly, when the valve actuator is in the closed position, the rotation of the handle and the valve body can be restricted by inserting a lockout member through the first opening and the second opening of the handle and the opening of the indicator member.

[0003] A better valve device has been long awaited.

[0004] The present disclosure aims to solve the above-described problems.

[0005] One aspect of the present disclosure includes a body having a plurality of ports through which a fluid flows, a valve body provided inside the body for switching a communication state between the plurality of ports, and an operation unit for driving the valve body. The valve body is driven by rotating the valve body while the operation unit is pushed into the body. The operation unit includes an insertion portion having a space into which a part of the body is inserted when the operation unit is pushed into the body. A plurality of through holes communicating with the space are formed in the insertion portion, and a lock member for preventing insertion of a part of the body into the space can be attached to the plurality of through holes. This is a valve device.

[0006] According to the present disclosure, a better valve device can be provided.

[0007] Figure 1 is a perspective view of a valve device according to an embodiment. Figure 2 is an exploded perspective view of the valve device. Figure 3 is a longitudinal cross-sectional view of the valve device. Figure 4 is a longitudinal cross-sectional view along the line IV-IV in Figure 3. Figure 5 is a plan view of the valve device. Figure 6 is an explanatory diagram of the operation of the valve device. Figure 7 is an explanatory diagram of the operation of the valve device. Figure 8 is a longitudinal cross-sectional view of the valve device shown in Figure 7. Figure 9 is a transverse cross-sectional view along the line IX-IX in Figure 8. Figure 10 is an explanatory diagram of the operation of the valve device. Figure 11 is a longitudinal cross-sectional view of the valve device shown in Figure 10. Figure 12 is a plan view of the valve device shown in Figure 11. Figure 13A is a perspective view showing the valve device in the locked state. Figure 13B is a perspective view showing the valve device in the locked state. Figure 13C is a perspective view showing the valve device in the locked state with an operating part according to a modified example. Figure 14A is a perspective view showing the valve device in the locked state. Figure 14B is a perspective view showing the valve device in the locked state with an operating part according to a modified example. Figure 15 is a perspective view showing the valve device attached to a panel member.

[0008] In the aforementioned Japanese Patent Publication No. 2023-18138, it is necessary to form an opening in the indicator member located inside the handle (operating part) for inserting the lockout member, which tends to complicate the valve device configuration. Furthermore, in such a valve member, gaps tend to form between the first and second openings and the lockout member, so even when the lockout member is installed, the handle may not be able to be locked accurately. In this disclosure, it is possible to obtain a valve device in which the locking member can be made smaller and the operating part can be locked accurately.

[0009] As shown in Figures 1 to 4, the valve device 10 according to this embodiment is, for example, a 3-port residual pressure exhaust valve. The valve device 10 comprises a body 12, an intermediate member 14, a valve body 16, a power transmission mechanism 18, an indicator 20, a biasing member 22, and an operating part 24. The valve device 10 can switch the communication state between a plurality of ports 26 provided on the body 12 by rotating the operating part 24 while it is pressed against the body 12. Hereinafter, the direction in which the operating part 24 is pressed may be referred to as the Z1 direction.

[0010] As shown in Figures 2 and 3, the valve device 10 extends along the axis Ax (Z direction) of the valve body 16. Inside the body 12, a valve chamber 28 is formed to house the valve body 16. The body 12 has a body main body 30 and a bonnet 32. The body main body 30 has a first side surface 30a, a second side surface 30b, and a bottom surface 30c. The first side surface 30a and the second side surface 30b face in a direction perpendicular to the axis Ax of the valve body 16 (X direction). The first side surface 30a faces in the X1 direction. The second side surface 30b faces in the opposite direction to the first side surface 30a (X2 direction). The bottom surface 30c faces in the Z1 direction.

[0011] The main body 30 has a plurality of ports 26 and a first valve hole 34. The plurality of ports 26 include a first port 26a, a second port 26b, and a third port 26c. The first port 26a opens to the first side surface 30a. Fluid is supplied to the first port 26a from, for example, a fluid supply source (not shown). The second port 26b opens to the second side surface 30b. The second port 26b communicates with, for example, a fluid pressure device (not shown). The third port 26c opens to the bottom surface 30c. The third port 26c is an exhaust port that communicates with the outside. The first valve hole 34 can communicate with the first port 26a, the second port 26b, and the third port 26c.

[0012] The bonnet 32 ​​is located in the Z2 direction of the body 30. The bonnet 32 ​​has a base portion 36, a protruding portion 38, a cylindrical portion 40, and an end wall portion 42. The base portion 36 is formed in the shape of a rectangular plate. The base portion 36 is attached to the body 30 by a plurality (four in this embodiment) of bolts 44.

[0013] The protruding portion 38 projects from the base portion 36 in the Z2 direction. When viewed from the Z2 direction, the protruding portion 38 has an outer shape like a rectangle with its four corners cut out. A second valve hole 46 is formed in both the base portion 36 and the protruding portion 38 (see Figure 3). The second valve hole 46 penetrates the base portion 36 and the protruding portion 38 in the Z direction. The second valve hole 46 communicates with the first valve hole 34 of the body 30 when the valve body 16 is not placed in the valve chamber 28.

[0014] As shown in Figure 2, the projection 38 includes a central portion 48 and four outer peripheral portions 50. The central portion 48 is formed to surround the second valve hole 46. The four outer peripheral portions 50 extend from the central portion 48 in a direction perpendicular to the Z direction. The four outer peripheral portions 50 are arranged at equal intervals in the circumferential direction of the central portion 48. Notches 52 are formed between adjacent outer peripheral portions 50.

[0015] The protruding portion 38 has a threaded portion 54 into which a nut member 200 (see Figure 15) is screwed. The threaded portion 54 is divided by four notches 52. In other words, the threaded portion 54 is formed on four outer peripheral portions 50. The base portion 36 has an overhanging portion 56 that extends further than the protruding portion 38 in a direction intersecting the axial direction (Z direction) of the valve body 16.

[0016] As shown in Figures 3 and 4, the cylindrical portion 40 protrudes in the Z2 direction from the central portion 48 of the protruding portion 38. A third valve hole 58 is formed inside the cylindrical portion 40. The third valve hole 58 communicates with the second valve hole 46 when the valve body 16 is not placed in the valve chamber 28. As shown in Figures 2 and 4, a pair of openings 60 are formed in the cylindrical portion 40. The pair of openings 60 are arranged to face each other. The openings 60 communicate with the third valve hole 58. The openings 60 are elongated holes extending in the Z direction. The end wall portion 42 closes the opening of the third valve hole 58 in the Z2 direction. The valve chamber 28 includes the first valve hole 34, the second valve hole 46, and the third valve hole 58.

[0017] As shown in Figures 2 and 3, the intermediate member 14 is attached to the bonnet 32. The intermediate member 14 has an annular intermediate body 62 and a plurality (four in this embodiment) of legs 64. The intermediate body 62 is positioned on the Z2-facing side of the protruding portion 38. A cylindrical portion 40 is positioned inside the intermediate body 62. The plurality of legs 64 extend from the intermediate body 62 in the Z1 direction. The plurality of legs 64 are positioned in the notches 52 of the bonnet 32 ​​(see Figures 1 and 2).

[0018] The valve body 16 switches the communication state between the multiple ports 26. Specifically, the valve body 16 switches the communication state between the multiple ports 26 between a supply state and a discharge state. In the supply state, the valve body 16 closes the third port 26c while keeping the first port 26a and the second port 26b in communication (see Figure 11). This allows the valve device 10 to supply fluid to, for example, a fluid pressure device (not shown). In the discharge state, the valve body 16 closes the first port 26a while keeping the second port 26b and the third port 26c in communication (see Figure 3). This allows the residual fluid pressure between the valve device 10 and the fluid pressure device to be discharged.

[0019] As shown in Figures 3 and 4, the valve body 16 has a shaft portion 66, a valve portion 68, a guide portion 70, and a connecting portion 72. The shaft portion 66 extends in the Z direction. The shaft portion 66 is arranged across the first valve hole 34, the second valve hole 46, and the third valve hole 58. The valve portion 68 is provided at one end of the shaft portion 66 (the end in the Z1 direction). The valve portion 68 is located inside the first valve hole 34. The valve portion 68 is formed in a cylindrical shape. An annular sealing member 74 is provided on the outer circumferential surface of the valve portion 68, which can make airtight or liquid-tight contact with the inner surface of the first valve hole 34.

[0020] The guide portion 70 is located in the axial middle portion of the shaft portion 66. The guide portion 70 is positioned within the second valve hole 46. The guide portion 70 protrudes radially outward from the shaft portion 66 and extends annularly in the circumferential direction. An annular sealing member 76 is provided on the outer circumferential surface of the guide portion 70, which makes airtight or liquid-tight contact with the inner surface of the second valve hole 46. The guide portion 70 slides in the Z direction within the second valve hole 46.

[0021] The connecting portion 72 is provided at the other end (the end in the Z2 direction) of the shaft portion 66. The connecting portion 72 is positioned within the third valve hole 58. The connecting portion 72 protrudes radially outward from the other end of the shaft portion 66.

[0022] The valve body 16 is biased in the Z2 direction by a spring member 78. The spring member 78 is interposed between the valve portion 68 and the body 30. The spring member 78 is, for example, a compression coil spring.

[0023] As shown in Figures 2 and 4, the power transmission mechanism 18 transmits power from the operating section 24 to the valve body 16. The power transmission mechanism 18 includes a pin 80 and a cam ring 82. The pin 80 is fixed to the connecting portion 72 of the valve body 16 so as to protrude from the connecting portion 72 in the Y direction.

[0024] As shown in Figure 2, the cam ring 82 is formed in a cylindrical shape. The cam ring 82 is located on the outside of the cylindrical portion 40. The cam ring 82 consists of two divided parts 84a and 84b, each with a circular arc cross-section. The two divided parts 84a and 84b are combined to form a cylindrical body. The divided part 84a is provided with a locking claw 86 for engaging with the operating part 24 (see Figure 3). In other words, the cam ring 82 moves integrally with the operating part 24.

[0025] A groove 88 is formed on the outer circumferential surface of the divided body 84a. The groove 88 penetrates the divided body 84a. One end of the pin 80 is inserted into the groove 88. The groove 88 is formed, for example, with a substantially constant width. As shown in Figures 2 and 6, the groove 88 includes a first groove 90, a second groove 92, and a third groove 94.

[0026] The first groove 90 extends along the axial direction (Z direction) of the cam ring 82. That is, the first groove 90 extends along the pushing direction (Z1 direction) of the operating part 24. The second groove 92 is inclined by a predetermined angle with respect to the axial direction of the cam ring 82. The second groove 92 extends from the end of the first groove 90 in the direction opposite to the pushing direction (Z2 direction) so as to be inclined in the circumferential direction of the cam ring 82 toward the pushing direction (Z1 direction). The third groove 94 extends from the end of the second groove 92 in the direction opposite to the first groove 90 along the circumferential direction of the cam ring 82. This allows the power of the operating part 24 to be easily transmitted to the valve body 16 by the cam ring 82 and the pin 80.

[0027] The divided body 84b is constructed in the same manner as the divided body 84a. Therefore, a detailed explanation of the configuration of the divided body 84b will be omitted. The other end of the pin 80 is inserted into the groove 88 of the divided body 84b.

[0028] As shown in Figures 2 and 3, the indicator 20 has an annular disc portion 96, an inner engaging portion 98, and a pair of extension portions 100. The disc portion 96 extends in a direction perpendicular to the Z direction (XY plane). As shown in Figure 2, a pair of display portions 102 and a pair of display portions 104 are provided on the surface of the disc portion 96 facing the Z2 direction.

[0029] In this embodiment, the display unit 102 includes the letters "SUP". The display unit 104 includes the letters "EXH". "SUP" indicates a state in which fluid is supplied from the first port 26a to the second port 26b (supply state). "EXH" indicates a state in which fluid is discharged to the outside from the third port 26c (discharge state).

[0030] One display unit 102 is positioned at a location offset by 180° in the circumferential direction of the disc portion 96 relative to the other display unit 102. One display unit 104 is positioned at a location offset by 180° in the circumferential direction of the disc portion 96 relative to the other display unit 104. One display unit 102 is positioned at a location offset by 90° in the circumferential direction of the disc portion 96 relative to the display unit 104.

[0031] As shown in Figures 3 and 4, the inner engaging portion 98 protrudes in the Z1 direction from the radially inward end of the disc portion 96. The inner engaging portion 98 is formed in an annular shape. The inner engaging portion 98 engages with the Z1-facing surface of the cam ring 82. This allows the indicator 20 to move in the Z1 direction together with the cam ring 82. A pair of extensions 100 extend from the disc portion 96 in the Z1 direction. As shown in Figure 3, the extensions 100 are positioned along the inner surface of the intermediate body 62. That is, the intermediate body 62 guides the extensions 100 in the Z direction.

[0032] The biasing member 22 biases the operating part 24 in the opposite direction to the pushing direction of the operating part 24. The biasing member 22 is, for example, a compression coil spring. The biasing member 22 is interposed between the intermediate member 14 and the inner engaging portion 98 of the indicator 20. This allows the biasing member 22 to return the operating part 24 to its state before pushing.

[0033] As shown in Figures 2 to 4, the operating unit 24 drives the valve body 16. The operating unit 24 is a handle that can be operated by the user. The operating unit 24 has a cover portion 106 and an insertion portion 108. The cover portion 106 is formed in a cylindrical shape. The cover portion 106 covers the power transmission mechanism 18 and the indicator 20. The indicator 20 is positioned inside the cover portion 106. The cover portion 106 has an annular wall portion 110 that covers the indicator 20 from the Z2 direction.

[0034] As shown in Figures 2, 3, 5, and 12, the annular wall portion 110 is provided with a pair of windows 112 for viewing multiple display units 102 and 104. One window 112 is positioned 180° in the circumferential direction of the annular wall portion 110 relative to the other window 112. The windows 112 are holes that penetrate the annular wall portion 110. This allows the display units 102 and 104 of the indicator 20 to be viewed from the direction opposite to the pushing direction of the operating unit 24 (Z2 direction), making it easy to grasp the communication status of the valve device 10.

[0035] As shown in Figures 2 to 4, the insertion portion 108 protrudes from the cover portion 106 in the opposite direction (Z2 direction) to the direction in which the operating portion 24 is pushed in. The insertion portion 108 has a space 114 into which a part of the body 12 is inserted when the operating portion 24 is pushed into the body 12 (see Figure 3). Specifically, the cylindrical portion 40 and the end wall portion 42 of the bonnet 32 ​​are inserted into the space 114 when the insertion portion 108 is pushed into the body 12 in the Z1 direction (see Figure 8).

[0036] As shown in Figure 2, the insertion portion 108 is formed in a rectangular shape when viewed from the direction of protrusion of the insertion portion 108 (Z2 direction). In this case, the insertion portion 108 can be made narrower than the cover portion 106. In the insertion portion 108, the length of the shorter side of the rectangle is smaller than the outer diameter of the cover portion 106.

[0037] The insertion portion 108 has a pair of first side wall portions 116, a pair of second side wall portions 118, and a top wall portion 120. The pair of first side wall portions 116 form the long sides of a rectangle. The first side wall portions 116 have locking holes 122 into which the locking claws 86 of the divided body 84a engage (see Figure 3). The pair of second side wall portions 118 form the short sides of a rectangle. The top wall portion 120 covers the space 114 from the protruding direction of the insertion portion 108. In this case, the space 114 can be formed by the pair of first side wall portions 116, the pair of second side wall portions 118, and the top wall portion 120.

[0038] The insertion portion 108 has a plurality of through holes 124 that communicate with the space 114. A locking member 300 can be attached to the plurality of through holes 124 to prevent a portion of the body 12 from being inserted into the space 114. As shown in Figure 13A, in this embodiment, the locking member 300 is a padlock (key member). That is, the locking member 300 has a lock body 302 and a U-shaped linear portion 304.

[0039] As shown in Figures 2 and 3, the multiple through holes 124 include a pair of through holes 124a and one through hole 124b. The through holes 124a are formed in the first side wall portion 116. The openings of the pair of through holes 124a face each other. The through hole 124b is formed in the center of the top wall portion 120. This allows the linearly extending portion of the linear portion 304 of the locking member 300 to be easily inserted through the pair of through holes 124a (see Figure 13A). Furthermore, the distance between the pair of through holes 124a can be made even shorter.

[0040] The openings of through-holes 124a and 124b face in different directions. In this case, the curved portion of the linear part 304 of the locking member 300 can be inserted through through-holes 124a and 124b (see Figure 13B). The size, position, shape, etc. of the through-holes 124 can be set as appropriate.

[0041] Next, the operation of the valve device 10 will be described. In the discharge state, the valve body 16 of the valve device 10 is biased in the Z2 direction by the spring member 78, thereby closing the first port 26a and connecting the second port 26b and the third port 26c. The operating part 24 is also biased in the Z2 direction by the biasing member 22. In the discharge state, as shown in Figure 5, a pair of windows 112 are positioned above a pair of display parts 104 (the letters "EXH") of the indicator 20. As a result, the user can see the pair of display parts 104 (the letters "EXH") through the windows 112, and thus easily recognize that the valve device 10 is in the discharge state. Furthermore, as shown in Figure 6, the pin 80 is located at the Z1 end of the first groove 90.

[0042] When switching from the discharge state to the supply state in the valve device 10, the operating part 24 is pushed in the Z1 direction relative to the body 12. As a result, as shown in Figures 7 and 8, the operating part 24, cam ring 82, and indicator 20 move in the Z1 direction relative to the body 12 and intermediate member 14, and the biasing member 22 is compressed and deformed. This causes the pin 80 to be positioned at the Z2 end of the first groove 90. Also, as shown in Figure 9, the circumferential movement of the indicator 20 is restricted relative to the intermediate member 14.

[0043] Next, the operating part 24 is rotated while being pushed in the Z1 direction relative to the body 12. As a result, as shown in Figure 10, the pin 80 moves from the second groove 92 to the third groove 94. As a result, as shown in Figure 11, the pin 80 and the valve body 16 move in the Z1 direction relative to the body 12, and the spring member 78 is compressed and deformed. The valve body 16 closes the third port 26c and opens communication between the first port 26a and the second port 26b.

[0044] Further, the operation unit 24 rotates with respect to the indicator 20. Therefore, as shown in FIG. 12, the pair of window portions 112 are positioned above the pair of display portions 102 (characters "SUP") of the indicator 20. As a result, the user can visually recognize the pair of display portions 102 (characters "SUP") through the window portions 112, and thus can easily recognize that the valve device 10 is in the supply state. In the supply state, the pin 80 contacts the side surface of the third groove portion 94. Therefore, the valve body 16 can maintain the supply state.

[0045] In the valve device 10, when switching from the supply state to the discharge state, an operation opposite to the operation when switching from the discharge state to the supply state described above is performed. In this case, the valve body 16 and the operation unit 24 return to their original positions by the spring member 78 and the biasing member 22.

[0046] In such a valve device 10, as shown in FIG. 13A, the linear portion 304 of the locking member 300 can be passed through the pair of through holes 124a of the operation unit 24. In this case, since the linear portion 304 is located in the space 114 of the insertion portion 108, insertion of a part of the body 12 into the space 114 of the insertion portion 108 is prevented. That is, the operation unit 24 cannot be pushed into the body 12. As a result, the operation unit 24 can be locked.

[0047] Further, in the valve device 10, as shown in FIG. 13B, the linear portion 304 of the locking member 300 can be passed through one of the pair of through holes 124a and the through hole 124b. As a result, the operation unit 24 can be locked. In this case, the distance between the through hole 124a and the through hole 124b can be made even shorter.

[0048] As shown in FIG. 13C, the plurality of through holes 124 may further include through holes 124c formed in each of the pair of second side wall portions 118 of the insertion portion 108. The openings of the pair of through holes 124c face each other. In this case, for example, the linear portion 304 of the locking member 300 can be passed through the pair of through holes 124c. As a result, the operation unit 24 can be locked. Further, for example, the linear portion 304 of the locking member 300 may be passed through one of the pair of through holes 124c and the through hole 124b.

[0049] As shown in FIG. 14A, the valve device 10 may attach a plurality (for example, two) of lock members 300 to the operation unit 24. In this case, the linear portion 304 of one lock member 300 is inserted into one through hole 124a and the through hole 124b. Also, the linear portion 304 of the other lock member 300 is inserted into the other through hole 124a and the through hole 124b.

[0050] As shown in FIG. 14B, three through holes 124a may be provided in each first side wall portion 116. The three through holes 124 are arranged at intervals in the Z direction, for example. In this case, three lock members 300 can be attached to the operation unit 24, for example. The number, position, size, etc. of the through holes 124a formed in the first side wall portion 116 can be changed as appropriate. In the present embodiment, the through hole 124 through which the linear portion 304 of the lock member 300 passes can be appropriately selected according to the size of the lock member 300.

[0051] As shown in FIG. 15, the valve device 10 may be attached to the panel member 202 by screwing the nut member 200 onto the screw portion 54 with the bonnet 32 passed through the hole of the panel member 202. In this case, the panel member 202 is sandwiched by the nut member 200 and the overhanging portion 56. Thereby, the valve device 10 can be easily attached to the panel member 202.

[0052] According to the present embodiment, by inserting the lock member 300 into the plurality of through holes 124, insertion into a part of the space 114 of the body 12 can be prevented. In this case, since there is no need to provide a hole portion in the member inside the operation unit 24 and pass the lock member 300 through the hole portion, the configuration of the valve device 10 can be simplified. Further, since the pushing operation of the operation unit 24 with respect to the body 12 is restricted by the lock member 300, the operation unit 24 cannot be rotated in a pushed-in state. Therefore, the operation unit 24 can be accurately locked.

[0053] Regarding the above disclosure, the following additional remarks are further disclosed.

[0054] (Note 1) The present disclosure is a valve device (10) comprising a body (12) having a plurality of ports (26) through which a fluid flows, a valve body (16) provided inside the body and switching the communication state between the plurality of ports, and an operating part (24) for driving the valve body, wherein the valve body is driven by rotating it while the operating part is pressed against the body, the operating part includes an insertion part (108) having a space (114) into which a part of the body is inserted when the operating part is pressed against the body, a plurality of through holes (124) communicating with the space are formed in the insertion part, and locking members (300) for preventing a part of the body from being inserted into the space can be attached to the plurality of through holes.

[0055] With this configuration, the locking member can be prevented from being inserted into a portion of the body's space by inserting it into multiple through-holes. In this case, there is no need to provide holes in the internal components of the operating part and pass the locking member through these holes, thus simplifying the valve device's structure. Furthermore, since the locking member restricts the pushing operation of the operating part against the body, it is not possible to rotate the operating part while it is pushed in. Therefore, the operating part can be locked with precision.

[0056] (Note 2) The valve device described in Note 1 may be provided with a biasing member (22) in the body that biases the operating part in the direction opposite to the pushing direction of the operating part.

[0057] With this configuration, the biasing member can easily return the operating part to its state before it was pressed.

[0058] (Note 3) The valve device described in Note 1 or 2, wherein the openings of at least two of the plurality of through holes may face each other.

[0059] With this configuration, the linearly extending portion of the locking member can be easily inserted through multiple through holes.

[0060] (Note 4) A valve device according to any one of Notes 1 to 3, wherein the openings of at least two of the plurality of through holes may face in different directions from one another.

[0061] With this configuration, the curved portion of the locking member can be inserted through multiple through holes.

[0062] (Note 5) A valve device according to any one of Notes 1 to 4, comprising a power transmission mechanism (18) that transmits power from the operating part to the valve body, wherein the operating part has a cylindrical cover part (106) that covers the power transmission mechanism, and the insertion part may protrude from the cover part in the direction opposite to the pushing direction of the operating part.

[0063] With this configuration, since the insertion part protrudes from the cover part that covers the power transmission mechanism, a space can be easily formed inside the insertion part for a part of the body to be inserted.

[0064] (Note 6) The valve device described in Note 5, wherein the power transmission mechanism includes a pin (80) provided on the valve body and a cylindrical cam ring (82) having a groove (88) for guiding the pin and being locked to the operating part, and the groove may include a first groove (90) extending along the pushing direction and a second groove (92) extending from the end of the first groove opposite to the pushing direction so as to be inclined in the circumferential direction of the cam ring toward the pushing direction.

[0065] With this configuration, the power from the operating part can be easily transmitted to the valve body by the cam ring and pin.

[0066] (Note 7) In the valve device described in Note 5, the insertion portion may be formed in a rectangular shape when viewed from the direction of protrusion of the insertion portion.

[0067] With this configuration, the insertion portion can be made narrower than the cover portion. This allows the spacing between the multiple through holes to be relatively short. As a result, the locking member can be made smaller.

[0068] (Note 8) The valve device described in Note 7 may have an insertion portion comprising a pair of first side wall portions (116) forming the long sides of a rectangle, a pair of second side wall portions (118) forming the short sides of the rectangle, and a top wall portion (120) covering the space from the protruding direction.

[0069] With this configuration, a space can be formed by a pair of first side walls, a pair of second side walls, and a top wall.

[0070] (Note 9) The valve device described in Note 8, wherein the plurality of through holes may be formed in each of the pair of first side wall portions.

[0071] With this configuration, the spacing between multiple through holes can be made even shorter.

[0072] (Note 10) The valve device described in Note 8 or 9, wherein the plurality of through holes may be formed in each of the pair of second side wall portions.

[0073] With this configuration, the locking member can be attached using the through holes formed in each of the pair of second side walls.

[0074] (Note 11) The valve device described in Note 8, wherein the plurality of through holes may be formed in at least one of the first side wall portion and the second side wall portion and the top wall portion, respectively.

[0075] This configuration allows for even shorter spacing between multiple through-holes.

[0076] (Note 12) The valve device described in Note 1, wherein the body has a base portion (36) and a projection (38) that protrudes from the base portion toward the operating portion, the projection portion is provided with a threaded portion (54) into which a nut member (200) is screwed, and the base portion may have an overhang (56) that protrudes further than the projection portion in a direction intersecting the axial direction of the valve body.

[0077] With this configuration, the panel member can be clamped between the nut member screwed onto the threaded portion and the protruding portion. This allows the valve device to be easily attached to the panel member.

[0078] (Note 13) A valve device according to any one of Notes 1 to 12, wherein an indicator (20) is provided inside the operating section, which has a plurality of display units (102, 104) that indicate the communication status between a plurality of ports, the display units face in the opposite direction to the direction in which the operating section is pushed, and the operating section may be provided with a window (112) for viewing the plurality of display units.

[0079] With this configuration, the indicator display can be viewed from the opposite direction to the direction in which the operating part is pressed, making it easy to understand the communication status of the valve device.

[0080] (Note 14) A valve device according to any one of Notes 1 to 13, wherein the plurality of ports include a first port (26a), a second port (26b), and a third port (26c), and the valve body may be switchable between a supply state in which fluid is supplied to a fluid pressure device by closing the third port while the first port and the second port are in communication, and a discharge state in which fluid can be discharged to the outside by closing the first port and opening the second port and the third port.

[0081] With this configuration, a three-port residual pressure exhaust valve can be obtained.

[0082] While this disclosure has been described in detail, it is not limited to the individual embodiments described above. These embodiments can be added, replaced, modified, partially deleted, etc., in any way that does not depart from the gist of this disclosure or from the spirit of this disclosure derived from the claims and their equivalents. These embodiments can also be implemented in combination. For example, the order of operations and processes in the embodiments described above are given as examples only and are not limited thereto. The same applies when numerical values ​​or mathematical formulas are used in the description of the embodiments described above.

[0083] 10... Valve device 12... Body 16... Valve body 18... Power transmission mechanism 20... Indicator 22... Biasing member 24... Operating part 26... Port 26a... First port 26b... Second port 26c... Third port 36... Base part 38... Projection part 54... Screw part 56... Overhang part 60... Opening 80... Pin 82... Cam ring 88... Groove part 90... First groove part 92... Second groove part 102, 104... Display part 106... Cover part 108... Insertion part 112... Window part 114... Space 116... First side wall part 118... Second side wall part 120... Top wall part 124, 124a-124c... Through hole 200... Nut member 300... Locking member

Claims

1. A valve device (10) comprising: a body (12) having a plurality of ports (26) through which fluid flows; a valve body (16) provided inside the body for switching the communication state between the plurality of ports; and an operating part (24) for driving the valve body, wherein the valve body is driven by rotating the operating part while it is pressed against the body; the operating part includes an insertion part (108) having a space (114) into which a part of the body is inserted when the operating part is pressed against the body; the insertion part has a plurality of through holes (124) communicating with the space; and locking members (300) for preventing a part of the body from being inserted into the space can be attached to the plurality of through holes.

2. A valve device according to claim 1, wherein the body is provided with a biasing member (22) that biases the operating part in a direction opposite to the pushing direction of the operating part.

3. A valve device according to claim 1, wherein the openings of at least two of the plurality of through holes face each other.

4. A valve device according to claim 1, wherein the openings of at least two of the plurality of through holes face in different directions from each other.

5. A valve device according to claim 1, comprising a power transmission mechanism (18) for transmitting power from the operating part to the valve body, the operating part having a cylindrical cover portion (106) that covers the power transmission mechanism, and the insertion portion protruding from the cover portion in a direction opposite to the pushing direction of the operating part.

6. A valve device according to claim 5, wherein the power transmission mechanism comprises: a pin (80) provided on the valve body; and a cylindrical cam ring (82) having a groove (88) for guiding the pin and being locked to the operating part, wherein the groove includes: a first groove (90) extending along the pushing direction; and a second groove (92) extending from the end of the first groove opposite to the pushing direction so as to be inclined in the circumferential direction of the cam ring toward the pushing direction.

7. A valve device according to claim 5, wherein the insertion portion is formed in a rectangular shape when viewed from the direction of protrusion of the insertion portion.

8. A valve device according to claim 7, wherein the insertion portion comprises: a pair of first side wall portions (116) forming the long sides of a rectangle; a pair of second side wall portions (118) forming the short sides of the rectangle; and a top wall portion (120) covering the space from the protruding direction.

9. A valve device according to claim 8, wherein the plurality of through holes are formed in each of the pair of first side wall portions.

10. A valve device according to claim 8, wherein the plurality of through holes are formed in each of the pair of second side wall portions.

11. A valve device according to claim 8, wherein the plurality of through holes are formed in at least one of the first side wall portion and the second side wall portion and the top wall portion, respectively.

12. A valve device according to claim 1, wherein the body comprises a base portion (36) and a projection portion (38) projecting from the base portion toward the operating portion, the projection portion is provided with a threaded portion (54) into which a nut member (200) is screwed, and the base portion has an overhang portion (56) that extends further than the projection portion in a direction intersecting the axial direction of the valve body.

13. A valve device according to claim 1, wherein an indicator (20) is provided inside the operating section, the indicator (20) having a plurality of display units (102, 104) that indicate the communication state between a plurality of ports, the display units face in the opposite direction to the pushing direction of the operating section, and the operating section is provided with a window (112) for viewing the plurality of display units.

14. A valve device according to any one of claims 1 to 13, wherein the plurality of ports include a first port (26a), a second port (26b), and a third port (26c), and the valve body is switchable between a supply state in which fluid is supplied to a fluid pressure device by closing the third port while the first port and the second port are in communication, and a discharge state in which fluid can be discharged to the outside by closing the first port and opening the second port and the third port.

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