Coupling device

Abstract

To provide a coupling device which can be easily manufactured.SOLUTION: A coupling device includes a first member and a coupling part fixed to the first member. The first member includes: a first member body part having a first opening; and an attachment part provided on a peripheral edge part of the first opening. The coupling part includes: a first cylindrical part having one end and the other end; and an arrangement part arranged at the other end and projecting toward a radial outward side of the first cylindrical part. The attachment part includes a plate-like body fixed to the first member body part by a fastening member. The arrangement part is sandwiched or supported by the first member and the plate-like body in a state of being arranged between the first member body part and the plate-like body. The fastening member is threaded from one end part side to the other end part side of the first cylindrical part.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present disclosure relates to a coupling device. [Background technology]

[0002] The fluid coupler includes a cylindrical member and a coupling mechanism (see, for example, Patent Document 1). The coupling mechanism is movable inside the cylindrical member in the radial direction of the cylindrical member. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Chinese Patent No. 104500887 Summary of the Invention [Problem to be solved by the invention]

[0004] The present disclosure aims to provide a coupling device that can be easily manufactured. [Means for solving the problem]

[0005] An exemplary coupling device of the present disclosure includes a first member and a coupling portion fixed to the first member, the first member including a first member main body portion having a first opening and an attachment portion arranged on the periphery of the first opening. The coupling portion includes a first cylindrical portion having one end and the other end, and an arrangement portion arranged at the other end and protruding radially outward from the first cylindrical portion. The attachment portion includes a plate-like body fixed to the first member main body portion by a fastening member. The arrangement portion is sandwiched or supported by the first member and the plate-like body while being arranged between the first member main body portion and the plate-like body. The fastening member is screwed from one end side to the other end side of the first cylindrical portion. [Effects of the Invention]

[0006] The exemplary embodiment disclosed herein allows for easy manufacturing. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is an overall perspective view of a coupling system according to a first embodiment of the present disclosure. [Figure 2] FIG. 2 is an overall perspective view of the coupling system of the first embodiment. [Figure 3] FIG. 3 is a perspective view showing a cross section of the coupling device of the first embodiment. [Figure 4] FIG. 4 is a cross-sectional view of the coupling device of the first embodiment. [Figure 5] FIG. 5 is an overall perspective view of a coupling system according to a second embodiment of the present disclosure. [Figure 6] FIG. 6 is a cross-sectional view of the coupling device of the second embodiment. [Figure 7] FIG. 7 is a perspective view showing a cross section of the coupling device of the second embodiment. [Figure 8] FIG. 8 is an overall perspective view of a coupling system according to a third embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, exemplary embodiments of the present disclosure will be described with reference to the drawings. In this specification, for ease of understanding, a first direction Z, a second direction X, and a third direction Y that are perpendicular to each other are appropriately described. Here, the direction from one end of the first cylindrical portion to the other end of the first cylindrical portion is referred to as the "first direction Z." The "first direction Z" is an example of a "predetermined direction." Furthermore, the direction perpendicular to the first direction Z is referred to as the "second direction X." Furthermore, the direction perpendicular to the first direction Z and the second direction X is referred to as the "third direction Y."

[0009] In this specification, the term "orthogonal direction" does not mean orthogonal in the strict sense, but includes, for example, a case where the direction is orthogonal to the extent that the effects of the present disclosure are achieved.

[0010] <Embodiment 1> A coupling system A according to a first exemplary embodiment of the present disclosure will be described. FIGS. 1 and 2 are overall perspective views of the coupling system A according to the first embodiment. FIG. 3 is a perspective view showing a cross section of a coupling device 100 according to the first embodiment. FIG. 4 is a cross section of the coupling device 100 according to the first embodiment. FIG. 1 is an overall perspective view of the coupling system A in a state in which a first member 10 and a second member 20 are connected. FIG. 2 is an overall perspective view of the coupling system A in a state in which the first member 10 and the second member 20 are separated.

[0011] 1 to 4, the coupling system A includes a coupling device 100 and a plurality of second members 20. In the first embodiment, the coupling device 100 that can be connected to four second members 20 will be described, but the coupling device 100 only needs to be connectable to at least one second member 20.

[0012] Each of the four second members 20 includes a second tubular portion 21. The second tubular portion 21 has, for example, a cylindrical shape extending along the first direction Z. The second tubular portion 21 includes a second flow path 22. Specifically, the second flow path 22 is disposed inside the second tubular portion 21. The second flow path 22 extends along the first direction Z. Note that only two second members 20 are shown in FIGS. 1 and 2. The coupling device 100 includes a first member 10 and four coupling portions 50. The first member 10 includes a first flow path 11, four attachment portions 12, and a first member main body portion 13.

[0013] The first member body 13 has four first openings 14. Each of the four first openings 14 communicates with the first flow path 11. Specifically, the shape of the first member body 13 is, for example, a rectangular parallelepiped.

[0014] A first flow path 11 is arranged inside the first member main body 13. Four first openings 14 are arranged on one surface of the first member main body 13 on the side opposite to the first direction Z. The four mounting portions 12 are arranged on the peripheries of the four first openings 14, respectively.

[0015] In the coupling system A according to this embodiment, when the first member 10 and the four second members 20 are connected, a fluid flows from each of the four second flow paths 22 to the first flow path 11. As the fluid, for example, an antifreeze solution such as an ethylene glycol aqueous solution or a propylene glycol aqueous solution, or pure water, etc., is used.

[0016] Next, a detailed description will be given of the coupling part 50. The second member 20 is connected to the coupling part 50. Specifically, the coupling part 50 includes a first cylindrical part 60 and an arrangement part .

[0017] The first cylindrical portion 60 includes a connecting flow path 61, an inclined portion 62, and a tip portion 63. The connecting flow path 61 extends along the first direction Z. Specifically, the connecting flow path 61 is disposed inside the tip portion 63 and inside the inclined portion 62.

[0018] The first cylindrical portion 60 further includes one end and the other end. Specifically, the tip portion 63 is disposed at one end of the first cylindrical portion 60. The inclined portion 62 is disposed at the other end of the first cylindrical portion 60. In other words, the tip portion 63 is disposed on the opposite side of the inclined portion 62 in the first direction Z.

[0019] One end of the first cylindrical portion 60 is connected to the second cylindrical portion 21 of the second member 20. In other words, the tip portion 63 is connected to the second cylindrical portion 21 of the second member 20. The outer diameter LB of the tip portion 63 is substantially constant along the first direction Z. Specifically, the shape of the tip portion 63 is, for example, a cylindrical shape extending along the first direction Z.

[0020] The tip portion 63 may have a tapered portion 63a in which the size of the inner diameter on the opposite side of the tip portion 63 in the first direction Z decreases along the first direction Z. As a result, the inner diameter decreases, forming a slope toward the center, making it possible to easily insert the second cylindrical portion 21 into the first cylindrical portion 60.

[0021] The inclined portion 62 is, for example, a cylindrical body having a truncated cone shape extending along the first direction Z. In detail, the outer diameter of the first cylindrical portion 60 and the diameter of the connecting flow path 61 decrease along the first direction Z. As a result, the flow path resistance of the connecting flow path 61 can be reduced, allowing the fluid to flow smoothly along the first direction Z.

[0022] The arrangement portion 70 is arranged at the other end of the first cylindrical portion 60. Specifically, the arrangement portion 70 is arranged at the inclined portion 62. The arrangement portion 70 protrudes outward in the radial direction RA of the first cylindrical portion 60. The arrangement portion 70 is, for example, a circular plate-shaped body perpendicular to the first direction Z. The thickness of the plate-shaped body is, for example, a distance AA.

[0023] The maximum outer diameter LA of the arrangement portion 70 is smaller than the maximum outer diameter LB of the first cylindrical portion 60. As a result, the radial size RA of the coupling portion 50 can be prevented from increasing.

[0024] Next, a detailed description will be given of the mounting portion 12. The placement portion 70 is attached to the mounting portion 12. The mounting portion 12 includes a first plate 15 and a second plate 16.

[0025] The first plate 15 is, for example, a plate-like body perpendicular to the first direction Z. The first plate 15 is attached to the first member main body 13. The first plate 15 is fixed to the first member main body 13 with screws or the like. Specifically, the first plate 15 is attached to the first member main body 13 at a predetermined distance in the opposite direction of the first direction Z. The predetermined distance is, for example, the same distance as the thickness AA of the arrangement portion 70. More specifically, the first portion of the arrangement portion 70 is arranged between the first member main body 13 and the first plate 15. In other words, the first portion of the arrangement portion 70 is clamped or supported by the first member main body 13 and the first plate 15.

[0026] The second plate 16 is, for example, a plate-like body perpendicular to the first direction Z. The second plate 16 is attached to the first member main body 13. The second plate 16 is fixed to the first member main body 13 with screws or the like. Specifically, the second plate 16 is attached to the first member main body 13 at a predetermined distance in the opposite direction of the first direction Z. The predetermined distance is, for example, the same distance as the thickness AA of the arrangement portion 70. More specifically, the second portion of the arrangement portion 70 is arranged between the first member main body 13 and the second plate 16. In other words, the second portion of the arrangement portion 70 is clamped or supported by the first member main body 13 and the second plate 16.

[0027] The second portion of the arrangement portion 70 is a portion different from the first portion of the arrangement portion 70. As a result, movement of the arrangement portion 70 relative to the first member 10 in the axial direction AX of the first cylindrical portion 60 is suppressed. Specifically, the second portion of the arrangement portion 70 and the first portion of the arrangement portion 70 face each other with the first cylindrical portion 60 as the center. More specifically, the second portion of the arrangement portion 70 and the first portion of the arrangement portion 70 face each other in the third direction Y.

[0028] The first member main body 13 further includes four cavities 17. The four cavities 17 are arranged on one surface of the first member main body 13 on the side opposite to the first direction Z. Specifically, the four cavities 17 are arranged around the four first openings 14, respectively. Each cavity 17 has a space recessed a predetermined distance in the first direction Z. The predetermined distance is, for example, the same as the thickness AA of the arrangement portion 70. The shape of the cavity 17 is, for example, a cylindrical shape extending along the first direction Z. The diameter LC of the cavity 17 is larger than the maximum outer diameter LA of the arrangement portion 70. As a result, the arrangement portion 70 is movable relative to the first member 10 in the radial direction RA of the first cylindrical portion 60. Specifically, the arrangement portion 70 is movable within the cavity 17 in the radial direction RA of the first cylindrical portion 60.

[0029] Here, a connection method for connecting the coupling device 100 and the four second members 20 will be described. When connecting the coupling device 100 and the four second members 20, the four second cylindrical portions 21 are inserted into the four first cylindrical portions 60. When the positions of the four first cylindrical portions 60 are misaligned with the positions of the four second cylindrical portions 21, the positions of the four first cylindrical portions 60 move in the radial direction RA relative to the first member 10. Each of the four first cylindrical portions 60 moves independently relative to the first member 10. As a result, the four first cylindrical portions 60 and the four second cylindrical portions 21 can be properly connected. This makes it possible to prevent poor connection and fluid leakage.

[0030] As explained above with reference to Figures 1 to 4, in this embodiment 1, even if the positioning portion 70 is allowed to move relative to the first member 10, the maximum outer diameter LA of the positioning portion 70 is smaller than the maximum outer diameter LB of the first tubular portion 60, and therefore the radial size of the coupling portion 50 can be prevented from increasing.

[0031] Here, a manufacturing method for manufacturing the coupling device 100 will be described. The placement portion 70 of the coupling part 50 is placed in the hollow portion 17. The first plate 15 is fixed to the first member main body portion 13 with screws or the like. The second plate 16 is fixed to the first member main body portion 13 with screws or the like. As a result, the coupling device 100 according to this embodiment can be easily manufactured simply by fixing the first plate 15 and the second plate 16 to the first member main body portion 13.

[0032] The coupling device 100 will now be described in detail with reference to Fig. 4. As shown in Fig. 4, a first sealing member 80 is disposed between the arrangement portion 70 and the attachment portion 12.

[0033] The first sealing member 80 is disposed between the arrangement portion 70 and the attachment portion 12 in the axial direction AX. Specifically, the first sealing member 80 is disposed in the first direction Z of the arrangement portion 70. The first sealing member 80 has, for example, a circular ring shape. The first sealing member 80 is made of, for example, rubber. As a result, leakage of fluid from between the arrangement portion 70 and the attachment portion 12 can be suppressed.

[0034] More specifically, the diameter LD of the first opening 14 is equal to or greater than the diameter LE of the opening of the arrangement portion 70. As a result, pressure loss caused by the opening of the arrangement portion 70 facing the first member main body portion 13 when the first cylindrical portion 60 moves in the radial direction RA can be suppressed. The arrangement portion 70 also includes a groove portion 70a for arranging the first sealing member 80. The distance from the inner end of the groove portion 70a to the inner end of the arrangement portion 70 is equal to or greater than half the difference between the diameter LC of the hollow portion 17 and the maximum outer diameter LA of the arrangement portion 70. As a result, even if the arrangement portion 70 moves within the attachment portion 12, exposure of the first sealing member 80 to the first opening 14 can be suppressed.

[0035] Furthermore, grease may be applied between the placement portion 70 and the attachment portion 12. Specifically, grease is applied to at least one of the surface of the placement portion 70 and the surface of the attachment portion 12. As a result, the placement portion 70 can easily move by sliding relative to the first member 10 in the radial direction RA of the first cylindrical portion 60. The grease is, for example, fluorine-based grease. As a result, in addition to making it difficult for the grease to flow into the fluid, the grease also becomes difficult for the grease to dissolve in the fluid.

[0036] More specifically, the first cylindrical portion 60 further includes a recess 64. The recess 64 is recessed from the outer peripheral surface of the first cylindrical portion 60 toward the inside in the radial direction RA. The recess 64 has an annular shape when viewed from, for example, the first direction. The recess 64 is arranged on the opposite side of the arrangement portion 70 from the first direction Z. The first plate 15 and the second plate 16 are arranged inside the recess 64. As a result, movement of the arrangement portion 70 relative to the first member 10 in the axial direction AX of the first cylindrical portion 60 is suppressed. Furthermore, even if the maximum outer diameter LA of the arrangement portion 70 is smaller than the maximum outer diameter LB of the first cylindrical portion 60, the width by which the coupling portion 50 can move relative to the first member 10 in the radial direction RA can be increased.

[0037] The first cylindrical portion 60 further includes a protrusion 65. The protrusion 65 protrudes inward in the radial direction RA from the inner circumferential surface of the first cylindrical portion 60. The protrusion 65 is disposed on the inner circumferential surface of the tip portion 63. More specifically, the protrusion 65 is disposed on the first direction Z side of the tip portion 63. The shape of the protrusion 65 is, for example, annular when viewed from the first direction Z.

[0038] The coupling unit 50 further includes an elastic member 51, a valve unit 52, and a connecting mechanism 59. The connecting mechanism 59 is disposed at the center of the first cylindrical portion 60 along the first direction Z. The valve unit 52 is disposed on the opposite side of the elastic member 51 in the first direction Z. The first direction Z side of the elastic member 51 is fixed to the opposite side of the protrusion 65 in the first direction Z. When the first cylindrical portion 60 and the second cylindrical portion 21 are not connected to each other, the valve unit 52 is pushed out in the opposite direction of the first direction Z by the elastic member 51 and comes into contact with the connecting mechanism 59, thereby preventing fluid from leaking to the outside. When the first cylindrical portion 60 and the second cylindrical portion 21 are connected to each other, the second cylindrical portion 21 faces the surface of the valve unit 52 on the opposite side of the first direction Z and moves in the first direction Z, allowing fluid to flow between the connecting mechanism 59 and the valve unit 52. By providing the protrusion 65 on the tip 63, it is possible to prevent the elastic member 51 from shifting position or coming off when the valve part 52 moves.

[0039] The valve portion 52 is an annular body. A second sealing member 81 is disposed radially inward of the valve portion 52 in the radial direction RA. The second sealing member 81 is, for example, annular in shape. The second sealing member 81 is made of, for example, rubber. As a result, when the first cylindrical portion 60 and the second cylindrical portion 21 are not connected, leakage of fluid from between the connecting mechanism 59 and the valve portion 52 can be suppressed.

[0040] The second sealing member 81 is fixed to the valve portion 52 by an adhesive. As a result, it is possible to prevent the second sealing member 81 from coming off the valve portion 52 when an external force is applied to the second sealing member 81. In addition, the adhesive is, for example, an epoxy adhesive, which can prevent the generation of outgassing. As a result, shrinkage of the adhesive after hardening is prevented, and it is possible to further prevent the second sealing member 81 from coming off the valve portion 52.

[0041] <Embodiment 2> A coupling system B according to a second exemplary embodiment of the present disclosure will now be described. Fig. 5 is an overall perspective view of the coupling system B according to the second embodiment. Fig. 6 is a cross-sectional view of a coupling device 200 according to the second embodiment. Figs. 5 and 6 are perspective views of the coupling system B in a state in which the first member 110 and the second member 120 are coupled together.

[0042] As shown in FIGS. 5 and 6, the coupling system B includes a coupling device 200, a first pump device 310, and a second pump device 320.

[0043] Each of the first pump device 310 and the second pump device 320 includes two second members 120. In other words, the coupling system B includes four second members 120.

[0044] Each of the four second members 120 includes a second cylindrical portion 121. The second cylindrical portion 121 has, for example, a polygonal cylindrical shape extending along the first direction Z. The second cylindrical portion 121 includes a second flow path 122. Specifically, the second flow path 122 is disposed inside the second cylindrical portion 121. The second flow path 122 extends along the first direction Z.

[0045] The coupling device 100 includes a first member 210 and four coupling portions 150. The first member 210 includes a first flow path 111, four attachment portions 112, and a first member main body portion 113.

[0046] The first member main body 113 has four first openings 114. Each of the four first openings 114 is in communication with the first flow path 111. Specifically, the shape of the first member main body 113 is, for example, a rectangular parallelepiped. The first flow path 111 is arranged inside the first member main body 113. The four first openings 114 are arranged on one surface of the first member main body 113 on the side opposite to the first direction Z. The four mounting portions 112 are arranged on the peripheries of the four first openings 114, respectively.

[0047] In the coupling system B of this embodiment 2, when the first member 110 of the coupling device 200 and the two second members 120 of the first pump device 310 are connected, fluid flows from one second flow path 122 to the first flow path 111, and also flows from the first flow path 111 to the other second flow path 122.

[0048] Furthermore, in the coupling system B according to the second embodiment, when the first member 110 of the coupling device 200 and the two second members 120 of the second pump device 320 are connected, fluid flows from one second flow path 122 to the first flow path 111, and also flows from the first flow path 111 to the other second flow path 122.

[0049] Next, a detailed description will be given of the coupling part 150. The second member 20 is connected to the coupling part 150. Specifically, the coupling part 150 includes a first cylindrical part 160 and an arrangement part 170.

[0050] The first cylindrical portion 160 includes a connecting flow path 161, a tip portion 163, and a step portion 162. The connecting flow path 161 extends along the first direction Z. In detail, the connecting flow path 161 is disposed inside the tip portion 163 and inside the step portion 162.

[0051] The first cylindrical portion 160 further includes one end and the other end. Specifically, the tip portion 163 is disposed at one end of the first cylindrical portion 160. The step portion 162 is disposed at the other end of the first cylindrical portion 160. In other words, the tip portion 163 is disposed on the opposite side of the step portion 162 in the first direction Z.

[0052] A sealing member 181 and a sealing member 182 are disposed on the radially inner side RA of the tip portion 163. In other words, two sealing members 181 and 182 are disposed on the radially inner side RA of the tip portion 163. The sealing members 181 and 182 are each shaped like a ring, for example. The sealing members 181 and 182 are each made of a material, for example, rubber. As a result, when the first cylindrical portion 160 and the second cylindrical portion 121 are connected, leakage of fluid from between the inner circumferential surface of the first cylindrical portion 160 and the outer circumferential surface of the second cylindrical portion 121 can be suppressed.

[0053] The step portion 162 is, for example, a cylindrical body extending along the first direction Z. In detail, the outer diameter of the step portion 162 is smaller than the outer diameter of the tip portion 163.

[0054] One end of the first cylindrical portion 160 is connected to the second cylindrical portion 121 of the second member 120. In other words, the tip portion 163 is connected to the second cylindrical portion 121 of the second member 120. The outer diameter LB of the tip portion 163 is substantially constant along the first direction Z. Specifically, the shape of the tip portion 163 is, for example, a cylindrical shape extending along the first direction Z.

[0055] The arrangement portion 170 is arranged at the other end of the first cylindrical portion 160. The arrangement portion 170 protrudes outward in the radial direction RA of the first cylindrical portion 160. The arrangement portion 170 is, for example, an annular plate-like body perpendicular to the first direction Z. The thickness of the plate-like body is, for example, a distance AA.

[0056] The maximum outer diameter LA of the arrangement portion 170 is smaller than the maximum outer diameter LB of the first cylindrical portion 160. As a result, the radial size RA of the coupling portion 50 can be prevented from increasing.

[0057] Next, the mounting portion 112 will be described in detail with reference to Fig. 7. Fig. 7 is a perspective view showing a cross section of the coupling device of the second embodiment. As shown in Fig. 7, the arrangement portion 170 is attached to the mounting portion 112. The mounting portion 112 includes a plurality of first plates 115 and a second plate 116.

[0058] The first plate 115 is, for example, a plate-like body perpendicular to the first direction Z. The first plate 115 is attached to the first member main body 113. The first plate 115 is fixed to the first member main body 113 with screws or the like. Specifically, the first plate 115 is attached to the first member main body 113 at a predetermined interval in the opposite direction of the first direction Z. The predetermined interval is, for example, the same distance as the thickness AA of the arrangement portion 170. More specifically, the first portion of the arrangement portion 170 is arranged between the first member main body 113 and the first plate 115. In other words, the first portion of the arrangement portion 170 is sandwiched or supported by the first member main body 113 and the first plate 115.

[0059] The second plate 116 is, for example, a plate-shaped body perpendicular to the first direction Z. The size of the second plate 116 is larger than the size of the first plate 115. The second plate 116 corresponds to the four arrangement portions 170. The second plate 116 is attached to the first member main body 113. The second plate 116 is fixed to the first member main body 113 with screws or the like. Specifically, the second plate 116 is attached to the first member main body 113 in the opposite direction of the first direction Z, with a predetermined interval therebetween. The predetermined interval is, for example, the same distance as the thickness AA of the arrangement portion 170. More specifically, the second portions of the four arrangement portions 170 are arranged between the first member main body 113 and the second plate 116. In other words, the second portions of the four arrangement portions 170 are sandwiched or supported by the first member main body 113 and the second plate 116.

[0060] Specifically, the second plate 116 overlaps both the first member 110 and the other first members 110 in both the second direction X and the third direction Y. Each of the four first plates 115 covers half of the outer periphery of one first member 110, and the second plate 116 covers half of the outer periphery of the four first members 110. The first plate 115 and the second plate 116 face each other at linear portions in the third direction Y. For example, the lower end of the first plate 115 faces the upper end of the second plate 116, or the upper end of the first plate 115 faces the lower end of the second plate 116. Because the first plate 115 is inserted along the third direction Y, it is easy to arrange and misalignment can be reduced.

[0061] The second portion of the arrangement portion 170 is a portion different from the first portion of the arrangement portion 170. As a result, movement of the arrangement portion 170 relative to the first member 110 in the axial direction AX of the first cylindrical portion 160 is suppressed. In detail, the second portion of the arrangement portion 170 and the first portion of the arrangement portion 170 face each other with the first cylindrical portion 160 as the center. More specifically, the second portion of the arrangement portion 170 and the first portion of the arrangement portion 170 face each other in the third direction Y.

[0062] The first member main body 113 further includes four cavities 117. The four cavities 117 are arranged on one surface of the first member main body 113 on the side opposite to the first direction Z. Specifically, the four cavities 117 are arranged around the four first openings 114, respectively. Each cavity 117 has a space recessed a predetermined distance in the first direction Z. The predetermined distance is, for example, the same as the thickness AA of the arrangement portion 170. The shape of the cavity 117 is, for example, a cylindrical shape extending along the first direction Z. A diameter LC of the cavity 117 is larger than a maximum outer diameter LA of the arrangement portion 170. As a result, the arrangement portion 170 is movable relative to the first member 110 in the radial direction RA of the first cylindrical portion 160. Specifically, the arrangement portion 170 is movable within the cavity 117 in the radial direction RA of the first cylindrical portion 160.

[0063] Here, a coupling method for coupling the coupling device 200 and the four second members 120 will be described. When coupling the coupling device 200 and the first pump device 310, two second cylindrical portions 121 are inserted into two first cylindrical portions 160. When the positions of the two first cylindrical portions 160 are misaligned with the positions of the two second cylindrical portions 121, the positions of the two first cylindrical portions 160 move in the radial direction RA with respect to the first member 110. Each of the two first cylindrical portions 160 moves independently with respect to the first member 110. As a result, the two first cylindrical portions 160 and the two second cylindrical portions 121 can be appropriately coupled. This makes it possible to prevent poor coupling and fluid leakage.

[0064] Furthermore, when coupling the coupling device 200 and the second pump device 320, the two second cylindrical portions 121 are inserted into the two first cylindrical portions 160. When the positions of the two first cylindrical portions 160 are misaligned with the positions of the two second cylindrical portions 121, the positions of the two first cylindrical portions 160 move in the radial direction RA with respect to the first member 110. Each of the two first cylindrical portions 160 moves independently with respect to the first member 110. As a result, the two first cylindrical portions 160 and the two second cylindrical portions 121 can be appropriately coupled. This makes it possible to prevent poor coupling and fluid leakage.

[0065] As described above with reference to Figures 5 to 7, in this embodiment 2, even if the positioning portion 170 is allowed to move relative to the first member 110, the maximum outer diameter LA of the positioning portion 170 is smaller than the maximum outer diameter LB of the first cylindrical portion 160, and therefore, the radial size of the coupling portion 150 can be prevented from increasing.

[0066] Here, a manufacturing method for manufacturing the coupling device 200 will be described. The second plate 116 is fixed to the first member main body 113 with screws or the like. The placement portion 170 of the coupling portion 150 is placed in the hollow portion 117. The first plate 115 is fixed to the first member main body 113 with screws or the like. As a result, the coupling device 200 according to the second embodiment can be easily manufactured simply by fixing the first plate 115 and the second plate 116 to the first member main body 113.

[0067] The coupling device 200 will now be described in detail with reference to Fig. 6. As shown in Fig. 6, a first sealing member 180 is disposed between the arrangement portion 170 and the attachment portion 112.

[0068] The first sealing member 180 is disposed between the arrangement portion 170 and the attachment portion 112 in the axial direction AX. Specifically, the first sealing member 180 is disposed in the first direction Z of the arrangement portion 170. The shape of the first sealing member 180 is, for example, an annular shape. The material of the first sealing member 180 is, for example, rubber. As a result, leakage of fluid from between the arrangement portion 170 and the attachment portion 112 can be suppressed.

[0069] More specifically, the diameter LD of the first opening 114 is equal to or greater than the diameter LE of the opening of the arrangement portion 170. As a result, when the first cylindrical portion 160 moves in the radial direction RA, pressure loss caused by the opening of the arrangement portion 170 facing the first member main body portion 113 can be suppressed.

[0070] The first cylindrical portion 160 further includes a protruding portion 165. The protruding portion 165 protrudes inward in the radial direction RA from the inner circumferential surface of the first cylindrical portion 160. The protruding portion 165 is disposed on the inner circumferential surface of the tip portion 163. Specifically, the protruding portion 165 is disposed on the first direction Z side of the tip portion 163. The shape of the protruding portion 165 is, for example, annular when viewed from the first direction Z.

[0071] In addition to the second flow path 122, the second cylindrical portion 121 further includes an elastic member 123, a connecting mechanism 124, and a protruding portion 125. The protruding portion 125 protrudes inward in the radial direction RA from the inner circumferential surface of the second cylindrical portion 121. The first direction Z side of the elastic member 151 is fixed to the first direction Z side of the protruding portion 125. The connecting mechanism 124 is disposed at the center of the second cylindrical portion 121 along the first direction Z. The connecting mechanism 124 is disposed on the first direction Z side of the elastic member 123.

[0072] When the first cylindrical portion 160 and the second cylindrical portion 121 are not connected, the connecting mechanism 124, which is pushed out toward the first direction Z by the elastic member 123, comes into contact with the tip end of the second cylindrical portion 121, thereby preventing fluid from leaking to the outside. Furthermore, when the first cylindrical portion 160 and the second cylindrical portion 121 are connected, the first cylindrical portion 160 faces the surface of the connecting mechanism 124 on the side opposite to the first direction Z, and is moved in the direction opposite to the first direction Z, allowing fluid to flow between the connecting mechanism 124 and the tip end of the second cylindrical portion 121.

[0073] The coupling portion 150 further includes an elastic member 151, a valve portion 152, a connecting mechanism 159, and a check valve 190. The connecting mechanism 159 is disposed at the center of the first cylindrical portion 160 along the first direction Z. The valve portion 152 is disposed on the opposite side of the elastic member 151 in the first direction Z. The first direction Z side of the elastic member 151 is fixed to the opposite side of the first direction Z of the protruding portion 165. When the first cylindrical portion 160 and the second cylindrical portion 121 are not connected, the valve portion 152 is pushed out by the elastic member 151 in the opposite direction of the first direction Z and comes into contact with the connecting mechanism 159, thereby preventing fluid from leaking to the outside. Furthermore, when the first cylindrical portion 160 and the second cylindrical portion 121 are connected, the second cylindrical portion 121 faces the surface of the valve portion 152 on the side opposite to the first direction Z, and by moving it in the first direction Z, fluid can flow between the connecting mechanism 159 and the valve portion 152.

[0074] The valve portion 152 is an annular body. A second sealing member 181 is disposed radially inward of the valve portion 152 in the radial direction RA. The second sealing member 181 is, for example, annular in shape. The second sealing member 181 is made of, for example, rubber. As a result, when the first cylindrical portion 160 and the second cylindrical portion 121 are not connected, leakage of fluid from between the connecting mechanism 159 and the valve portion 152 can be suppressed.

[0075] The second sealing member 181 is fixed to the valve portion 152 by an adhesive. As a result, the second sealing member 181 can be prevented from coming off the valve portion 152.

[0076] The check valve 190 is disposed on the first direction Z side of the connecting mechanism 159. The check valve 190 allows fluid to flow from the second flow path 122 to the connecting flow path 161, but prevents fluid from flowing from the connecting flow path 161 to the second flow path 122.

[0077] Specifically, the check valve 190 includes a hinge 191, a first semicircular plate 192, and a second semicircular plate 193. The hinge 191 is disposed on the first direction Z side of the coupling mechanism 159. The first semicircular plate 192 and the second semicircular plate 193 each rotate by the hinge 191 about a rotation axis along the second direction X. The first semicircular plate 192 and the second semicircular plate 193 each open the connecting flow path 161 while being inclined with respect to the first direction Z. On the other hand, the first semicircular plate 192 and the second semicircular plate 193 each close the connecting flow path 161 while being perpendicular to the first direction Z. Note that, in the second embodiment, the coupling unit 150 through which the fluid flows from the second flow path 122 to the connecting flow path 161 will be described; however, the check valve 190 may be disposed in the coupling unit 150 through which the fluid flows from the connecting flow path 161 to the second flow path 122. The check valve 190 may further include a first cushion material 190a and a second cushion material 190b. The first cushion material 190a is disposed on the surface of the first semicircular plate 192 opposite to the first direction Z. The second cushion material 190b is disposed on the surface of the second semicircular plate 193 opposite to the first direction Z. As a result, although each of the first semicircular plate 192 and the second semicircular plate 193 comes into contact with the protruding portion 165 when blocking the connecting flow path 161, the impact with the protruding portion 165 can be suppressed.

[0078] The first cylindrical portion 160 further includes a notch 199. The notch 199 is arranged on the outer circumferential surface of the first cylindrical portion 60 on the second direction X side. More specifically, the notch 199 is arranged on the rotation axis of the check valve 190. As a result, by arranging the notch 199 in the second direction X, it is possible to prevent the first semicircular plate 192 and the second semicircular plate 193 from rotating due to gravity. Note that the notch 199 may also be arranged on the outer circumferential surface of the first cylindrical portion 60 on the side opposite to the second direction X.

[0079] <Embodiment 3> A description will be given of a coupling system C according to a third exemplary embodiment of the present disclosure. Fig. 8 is a cross-sectional view of the coupling system C according to the third exemplary embodiment. As shown in Fig. 8, the coupling system C includes a coupling device 300.

[0080] The coupling device 300 includes a first member 10, a coupling portion 50, an elastic member 410, and a main body portion 420. The main body portion 420 surrounds the first member 10.

[0081] The elastic member 410 is made of a material such as a spring or rubber. The elastic member 410 is disposed between the first member 10 and the main body portion 420. Specifically, the elastic member 410 is disposed between a surface of the first member 10 on one side in direction Z and a surface of the main body portion 420 on the opposite side in direction Z. As a result, the first member 10 is able to move relative to the main body portion 420 in the axial direction AX of the first cylindrical portion 60.

[0082] As described above with reference to FIG. 8 , in the third embodiment, when the coupling device 300 and the second member 20 are connected, the second cylindrical portion 21 is inserted into the first cylindrical portion 60. When the position of the first cylindrical portion 60 is misaligned with the position of the second cylindrical portion 21, the position of the first cylindrical portion 60 moves in the radial direction RA relative to the first member 10, and the position of the first cylindrical portion 60 moves in the axial direction AX relative to the main body portion 420. As a result, the first cylindrical portion 60 and the second cylindrical portion 21 can be appropriately connected. This makes it possible to prevent poor connection and fluid leakage.

[0083] The above describes embodiments of the present disclosure with reference to the drawings. However, the above embodiments are merely examples of the present disclosure, and the present disclosure is not limited to the above embodiments and can be implemented in various forms without departing from the spirit and scope of the present disclosure. The drawings mainly show each component in a schematic manner for ease of understanding, and the thickness, length, number, etc. of each component shown in the drawings may differ from the actual components due to the convenience of creating the drawings. Furthermore, the materials, shapes, dimensions, etc. of each component shown in the above embodiments are merely examples and are not particularly limited. Various modifications are possible within a scope that does not substantially deviate from the effects of the present disclosure. The configuration of the embodiments may be appropriately modified within a scope that does not deviate from the technical concept of the present disclosure. Furthermore, the embodiments may be implemented in combination within the scope of possibility.

[0084] The present technology can also employ the following configuration. (1) a first member having a first flow path and an attachment portion; a coupling portion; The coupling portion is a first cylindrical portion having one end connected to a second cylindrical portion of a second member having a second flow path; an arrangement portion that is arranged at the other end of the first cylindrical portion and attached to the attachment portion, Movement of the arrangement portion relative to the first member in the axial direction of the first cylindrical portion is suppressed, The arrangement portion is movable relative to the first member in a radial direction of the first cylindrical portion, A coupling device, wherein the maximum outer diameter of the arrangement portion is smaller than the maximum outer diameter of the first cylindrical portion. (2) The arrangement portion protrudes radially outward from the first cylindrical portion, The coupling device according to (1), wherein a first sealing member is disposed between the arrangement portion and the attachment portion. (3) The mounting portion is a first plate attached to a first member body portion having a first opening communicating with the first flow path; a second plate attached to the first member body portion, the first portion of the arrangement portion is arranged between the first member body portion and the first plate, the second portion of the arrangement portion is arranged between the first member body portion and the second plate, The coupling device according to (1) or (2), wherein the second part is a part different from the first part. (4) The coupling device according to (3), wherein the diameter of the first opening is equal to or greater than the diameter of the opening of the placement portion. (5) The first cylindrical portion is a connecting flow path extending in a predetermined direction; an inclined portion in which the outer diameter of the first cylindrical portion and the diameter of the connecting flow path decrease along the predetermined direction, The coupling device according to any one of (1) to (4), wherein the predetermined direction indicates a direction from the one end of the first cylindrical portion toward the other end of the first cylindrical portion. (6) The first cylindrical portion has a recess recessed from an outer circumferential surface of the first cylindrical portion toward a radially inner side, The coupling device according to (5), wherein the recess is arranged in a direction opposite to the predetermined direction of the arrangement portion. (7) The first cylindrical portion is a tip portion disposed on the opposite side of the predetermined direction from the inclined portion; a protrusion protruding radially inward from an inner circumferential surface of the first cylindrical portion, The coupling portion is An elastic member; a valve portion disposed on the opposite side of the elastic member from the predetermined direction, the outer diameter of the tip portion is substantially constant along the predetermined direction, the protrusion is disposed on the tip portion, The coupling device according to any one of (1) to (6), wherein the predetermined direction side of the elastic member is fixed to the opposite side of the protrusion to the predetermined direction. (8) The valve portion is an annular body, The coupling device according to (7), wherein a second sealing member is disposed radially inside the valve portion. (9) The coupling device according to (8), wherein the second sealing member is fixed to the valve portion by an adhesive. [Explanation of symbols]

[0085] 10... First member 12 Mounting part 50 Coupling part 60...1st cylinder part 70...Arrangement section 100 Coupling device

Claims

1. A first member; a coupling portion fixed to the first member; Equipped with The first member is a first member body portion having a first opening; an attachment portion disposed on a periphery of the first opening; Equipped with The coupling portion is a first cylindrical portion having one end and another end; an arrangement portion that is arranged at the other end portion and that protrudes radially outward of the first cylindrical portion; Equipped with the mounting portion includes a plate-like body fixed to the first member main body portion by a fastening member, the arrangement portion is sandwiched or supported by the first member and the plate-like body in a state where the arrangement portion is arranged between the first member main body portion and the plate-like body, The fastening member is screwed from the one end side toward the other end side of the first cylindrical portion.

2. A first member; a coupling portion fixed to the first member; Equipped with The first member is a first member body portion having a first opening; an attachment portion disposed on a periphery of the first opening; Equipped with The coupling portion is a first cylindrical portion having one end and another end; an arrangement portion that is arranged at the other end portion and that protrudes radially outward of the first cylindrical portion; Equipped with the mounting portion includes a first plate and a second plate fixed to the first member body portion by a fastening member, the arrangement portion is sandwiched or supported by the first member and the first plate when disposed between the first member main body portion and the first plate, and is sandwiched or supported by the first member and the second plate when disposed between the first member main body portion and the second plate, The fastening member is screwed from the one end side toward the other end side of the first cylindrical portion.

3. The coupling device according to claim 2 , wherein the one end is adapted to receive a protrusion of another member.

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