Connecting device

Abstract

The connection device (10) comprises a male connector component (12), a female connector component (14), a first coupling body (16A) and a second coupling body (16B). The first coupling body (16A) comprises an extension portion (18) extending in a plug-in and pull-out direction (DA), and the second coupling body (16B) comprises a base portion (20) and a stopper portion (22). The base portion (20) is formed with an insertion hole (20HL) into which the extension portion (18) can be inserted, and the stopper portion (22) engages with the extension portion (18) inserted through the insertion hole (20HL) to prevent the extension portion (18) from coming out of the insertion hole (20HL).

Description

Technical Field

[0001] The utility model relates to a connecting device for connecting flow paths. Background Art

[0002] Prior art literature

[0003] For example, Japanese Patent Application Laid-Open No. 02-113195 discloses a multi-connector head having multiple tubes in which fluid tubes are connected and integrally formed.

[0004] When a flow path is connected, it is assumed that the connection may be disconnected by the pressure of the fluid flowing in the flow path. Therefore, a countermeasure to prevent the connection from being accidentally disconnected is desired. Utility Model Content

[0005] The purpose of the utility model is to solve the above problems.

[0006] One embodiment of the utility model is a connection device, connecting a flow path, comprising: a male connector component, the male connector component having a plurality of convex flow path end portions; a female connector component, the female connector component having a concave flow path end portion configured to be able to be one-to-one fitted with the plurality of the convex flow path end portions; a first engaging body, the first engaging body being arranged on one of the male connector component and the female connector component; a second engaging body, the second engaging body being arranged on the other of the male connector component and the female connector component, the first engaging body having an extension portion extending along a plugging and unplugging direction of the convex flow path end portion and the concave flow path end portion, the second engaging body having: a base portion, the base portion being formed with an insertion hole into which the extension portion can be inserted; and a stopper, the stopper being supported on the base portion and engaging with the extension portion inserted through the insertion hole to prevent the extension portion from coming out of the insertion hole.

[0007] According to the utility model, it is possible to prevent the connection from being accidentally released.

[0008] The above objects, features and advantages can be easily understood from the following description of the embodiments described with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram showing the connection device in the non-connected state according to the first embodiment.

[0010] Figure 2 It is a schematic diagram showing the connection device at the time of connection according to the first embodiment.

[0011] Figure 3 It is an exploded perspective view showing the second bonded body according to the first embodiment.

[0012] Figure 4 It is a cross-sectional view of the attachment and detachment structure of the first embodiment showing a state in which the attachment and detachment structure is engaged with the extension portion.

[0013] Figure 5 It is a cross-sectional view of the attachment and detachment structure of the first embodiment showing a state in which the engagement of the extension portion is released.

[0014] Figure 6 It is a schematic diagram showing the connection device in the non-connected state according to the second embodiment.

[0015] Figure 7 It is a schematic diagram showing the connection device at the time of connection according to the second embodiment.

[0016] Figure 8 It is an exploded perspective view showing a second bonded body according to the second embodiment.

[0017] Fig. 9 It is a cross-sectional view of the attachment and detachment structure of the second embodiment showing a state in which the structure is engaged with the extension portion.

[0018] Fig. 10A 2 is a diagram showing the relationship between the through hole of the stopper portion and the insertion hole of the base portion when the stopper portion is not engaged with the extension portion. Fig. 10B It is a diagram showing the relationship between the through hole of the stopper portion and the insertion hole of the base portion when the engagement of the extension portion is released.

[0019] Fig.11 It is a schematic diagram showing the connection device in the non-connected state according to the third embodiment.

[0020] Fig.12 It is a schematic diagram showing the connection device during connection according to the third embodiment.

[0021] Fig.13 It is a cross-sectional view of the attachment and detachment structure of the third embodiment showing a state in which the attachment and detachment structure is engaged with the extension portion.

[0022] Fig.14 It is a cross-sectional view of the attachment and detachment structure of the third embodiment showing a state in which the engagement of the extension portion is released.

[0023] Fig.15 It is a schematic diagram showing the connection device in a non-connected state according to a modification of the third embodiment.

[0024] Fig.16 It is a cross-sectional view of a mounting and dismounting structure portion according to a modified example of the third embodiment, showing a state in which the mounting and dismounting structure portion is engaged with an extending portion.

[0025] Fig.17 It is a cross-sectional view of a mounting and dismounting structure according to a modification of the third embodiment, showing a state in which the engagement of the extending portion is released. DETAILED DESCRIPTION

[0026] (First Embodiment)

[0027] Figure 1 1 is a schematic diagram showing the connection device 10 in the non-connected state according to the first embodiment. Figure 2 1 is a schematic diagram showing the connection device 10 during connection according to the first embodiment. The connection device 10 is a device for connecting a flow path. The connection device 10 includes a male connector component 12, a female connector component 14, and a mounting and detaching structure 16.

[0028] The male connector component 12 is a male connector that can be attached to and detached from the female connector component 14. The male connector component 12 is formed in, for example, a rectangular parallelepiped shape. The male connector component 12 has a plurality of convex flow path end portions 12A and a plurality of tube connection portions 12B.

[0029] The plurality of convex flow path ends 12A protrude from the first surface 12F1 of the male connector component 12. The first surface 12F1 is a surface facing the female connector component 14 when mounted. The convex flow path end 12A may be an output end for outputting a fluid to the female connector component 14, or an input end for inputting a fluid supplied from the female connector component 14. The plurality of convex flow path ends 12A may be divided into three or more rows arranged at intervals in one direction. Figure 1 An example is shown in which two column groups are arranged on the first surface 12F1.

[0030] The plurality of tube connection parts 12B protrude from the second surface 12F2 of the male connector component 12. The second surface 12F2 is the surface of the male connector component 12 that is opposite to the first surface 12F1. The plurality of tube connection parts 12B are provided corresponding to the plurality of convex flow path ends 12A. The tube connection parts 12B are connected to the corresponding convex flow path ends 12A. One end of a tube (not shown) is attached to the tube connection part 12B.

[0031] The female connector component 14 is a female connector that can be attached to and detached from the male connector component 12. The female connector component 14 is formed in, for example, a rectangular parallelepiped shape. The female connector component 14 has a plurality of concave flow path end portions 14A and a plurality of tube connection portions 14B.

[0032] The plurality of concave flow path ends 14A are arranged to be able to be fitted one-to-one with the plurality of convex flow path ends 12A. The plurality of concave flow path ends 14A are holes formed from the first surface 14F1 of the concave connector component 14 toward the inside. The first surface 14F1 is a surface facing the convex connector component 12 during installation. When the convex flow path end 12A is fitted into the concave flow path end 14A, the flow path of the concave flow path end 14A is connected to the flow path of the convex flow path end 12A. In this case, a sealing component (not shown) is provided at the concave flow path end 14A, which seals the gap between the concave flow path end 12A and the fitted convex flow path end 12A to suppress leakage of the fluid.

[0033] The plurality of tube connection parts 14B protrude from the second surface 14F2 of the female connector component 14. The second surface 14F2 is a surface on the opposite side to the first surface 14F1 of the female connector component 14. The plurality of tube connection parts 14B are provided corresponding to the plurality of concave flow path end parts 14A. The tube connection parts 14B are connected to the corresponding concave flow path end parts 14A. One end of a tube (not shown) is mounted on the tube connection part 14B.

[0034] The detachable structure 16 is a part that is detachably mounted. The detachable structure 16 includes a first engaging body 16A and a second engaging body 16B. The first engaging body 16A is provided on one of the male connector component 12 and the female connector component 14. The second engaging body 16B is provided on the other of the male connector component 12 and the female connector component 14.

[0035] In this embodiment, the first engaging body 16A is provided in the female connector component 14, and the second engaging body 16B is provided in the male connector component 12. Alternatively, the first engaging body 16A may be provided in the male connector component 12, and the second engaging body 16B may be provided in the female connector component 14.

[0036] The first coupling bodies 16A are provided at both ends of the female connector component 14 in the direction in which the female flow path ends 14A constituting the column group are arranged. Similarly, the second coupling bodies 16B are provided at both ends of the male connector component 12 in the direction in which the male flow path ends 12A constituting the column group are arranged. In the present embodiment, the number of the first coupling bodies 16A is two, but is not limited thereto, and may be three or more, or may be one. The same applies to the number of the second coupling bodies 16B.

[0037] The first joint body 16A has an extension portion 18. The extension portion 18 extends in the insertion and extraction direction DA. One side of the insertion and extraction direction DA is an insertion direction DA1 in which the convex flow path end portion 12A is inserted into the concave flow path end portion 14A. The other side of the insertion and extraction direction DA is a removal direction DA2 in which the convex flow path end portion 12A is removed from the concave flow path end portion 14A.

[0038] The extension portion 18 extends, for example, from the first surface 14F1 of the female connector component 14. The extension portion 18 may also be formed in a plate shape. An engagement hole 18HL is formed in the extension portion 18. The engagement hole 18HL passes through the extension portion 18 along the engagement / disengagement direction DB. The engagement / disengagement direction DB is orthogonal to the insertion and removal direction DA. One side of the engagement / disengagement direction DB is the engagement direction DB1, and the other side of the engagement / disengagement direction DB is the engagement / disengagement direction DB2. The engagement / disengagement direction DB may also be along the direction in which the convex flow path end portions 12A constituting the column group are arranged. When the extension portion 18 is formed in a plate shape, the engagement / disengagement direction DB is the thickness direction of the extension portion 18.

[0039] Figure 3 It is an exploded perspective view showing the second bonded body 16B according to the first embodiment. Figure 4 It is a cross-sectional view of the detachable structure 16 of the first embodiment showing a state of being engaged with the extending portion 18. The second joint body 16B includes a base portion 20, a stopper portion 22, a biasing portion 24, and an operating portion 26.

[0040] The base portion 20 is a base portion of the second joint body 16B. The base portion 20 is formed by joining a base body 20A and a cover plate 20B. The cover plate 20B covers the surface of the base body 20A in the extraction direction DA2. In addition, the base portion 20 may also be a part of the female connector component 14. An insertion hole 20HL is formed in the base portion 20, into which the extension portion 18 can be inserted.

[0041] The base 20 is provided with a first configuration space 20SP1 for configuring the stopper 22 and a second configuration space 20SP2 for configuring the force applying portion 24 and the operating portion 26. The first configuration space 20SP1 is located on the inner side of the base 20 (on the side of the engagement release direction DB2) compared to the insertion hole 20HL. The first configuration space 20SP1 is connected to the insertion hole 20HL. The second configuration space 20SP2 is a portion recessed from the surface of the base 20 and is located on the outer side of the base 20 (on the side of the engagement direction DB1) compared to the insertion hole 20HL. The second configuration space 20SP2 may be connected to the insertion hole 20HL or not.

[0042] The stopper 22 is a portion that engages with the extension 18 inserted into the insertion hole 20HL of the base 20 to prevent the extension 18 from coming out of the insertion hole 20HL. The stopper 22 is supported by the base 20 in a manner that allows sliding in the engagement direction DB1 or the engagement release direction DB2. The stopper 22 includes a stopper body 30, a hook 32, and a connecting rod 34.

[0043] The stopper body 30 extends in the insertion and removal direction DA. The stopper body 30 may have elasticity in the engagement / disengagement direction DB. The hook 32 extends from the stopper body 30 toward the insertion hole 20HL of the base portion 20. The hook 32 is formed with an inclined surface 32F. The surface of the hook 32 on the insertion direction DA1 side is formed as the inclined surface 32F. The inclined surface 32F is arranged to be farther away from the entrance 20IN ( Figure 4 The connecting rod 34 connects the stopper 22 and the operating part 26.

[0044] The force applying portion 24 is a portion that applies force to the stopper 22 toward the outer peripheral surface of the extension portion 18 so that the stopper 22 engages with the engagement hole 18HL of the extension portion 18. The force applying portion 24 may also be a coil spring. The force applying portion 24 is disposed between the base portion 20 and the operating portion 26. One end of the force applying portion 24 is fixed to the base portion 20. The other end of the force applying portion 24 is fixed to the operating portion 26.

[0045] The force applying portion 24 applies a force to push the operating portion 26 toward the outside (engaging direction DB1 side) of the base portion 20 along the engagement / disengagement direction DB. Therefore, the stopper body 30 approaches the insertion hole 20HL through the connecting rod 34 connected to the operating portion 26. At this time, at least a portion of the hook 32 is located in the insertion hole 20HL (see Figure 4 As a result, the stopper 22 stays at the engagement position, which is a position where the stopper 22 can be hooked on the engagement hole 18HL of the extension portion 18 inserted into the insertion hole 20HL.

[0046] The operating portion 26 is a portion for operating the stopper 22 in a direction (disengagement direction DB2 side) opposite to the force direction (engagement direction DB1 side) of the force applying portion 24 to release the engagement between the stopper 22 and the extension portion 18. The operating portion 26 is formed in a plate shape, for example. The operating portion 26 has a pressure receiving surface 26F pressed by a user. The pressure receiving surface 26F is located on the surface of the second joint body 16B (see Figure 1 , Figure 2 ). Figure 5 This is a cross-sectional view of the detachable structure 16 of the first embodiment showing a state where the extension 18 is disengaged. When the pressure receiving surface 26F is pressed, the stopper body 30 is separated from the insertion hole 20HL via the connecting rod 34 connected to the operating portion 26. In this case, the hook 32 is separated from the insertion hole 20HL.

[0047] Next, the operation of the second joint body 16B when the extension portion 18 is inserted and removed will be described. First, when the second joint body 16B is inserted from the inlet 20IN ( Figure 4)When the extension portion 18 is inserted, the front end of the extension portion 18 contacts the inclined surface 32F of the stop portion 22. When the extension portion 18 is further inserted, the stop portion 22 receives the insertion force of the extension portion 18 on the inclined surface 32F and slides toward the inner side of the base portion 20 (the side of the engagement release direction DB2). As a result, the hook 32 is separated from the insertion hole 20HL. When the extension portion 18 is further inserted and the extension portion 18 leaves the inclined surface 32F, the stop portion 22 slides toward the outer side of the base portion 20 (the side of the engagement direction DB1) by the force applied by the force applying portion 24. As a result, the hook 32 enters the engagement hole 18HL of the extension portion 18 and engages with the extension portion 18 (refer to Figure 4 ). This engaged state is maintained by the urging force of the urging portion 24. Therefore, even if the extension portion 18 is to be pulled out, the hook 32 abuts against the inner surface of the engagement hole 18HL of the extension portion 18, and the extension portion 18 does not fall out of the insertion hole 20HL. Therefore, even if the pressure of the fluid flowing between the convex flow path end portion 12A and the concave flow path end portion 14A increases, it is possible to prevent the connection between the male connector component 12 and the female connector component 14 from being intentionally released.

[0048] When the pressure receiving surface 26F of the operation portion 26 is pressed while the hook 32 is engaged with the extension portion 18, the hook 32 is separated from the insertion hole 20HL as described above (see Figure 5 ). At this time, since the hook 32 comes out of the engagement hole 18HL, the engagement of the hook 32 with respect to the extension part 18 is released. In this case, the extension part 18 can be pulled out from the insertion hole 20HL. In this way, the connection between the male connector component 12 and the female connector component 14 can be intentionally released.

[0049] The first embodiment may also be modified. For example, there may be more than two extension portions 18. In this case, the insertion hole 20HL may be one that can be inserted with the two or more extension portions 18, or may be a plurality of holes corresponding to the two or more extension portions 18. Similarly, the stopper 22 may be one that engages with each of the two or more extension portions 18, or may be a plurality of holes corresponding to the two or more extension portions 18. The same is true for the force-applying portion 24 and the operating portion 26.

[0050] (Second Embodiment)

[0051] Next, the attachment and detachment structure 16 of the second embodiment will be described. In the second embodiment, the same components as those of the attachment and detachment structure 16 described above are denoted by the same reference numerals, and detailed description thereof will be omitted. Figure 6 1 is a schematic diagram showing the connection device 10 in the non-connected state according to the second embodiment. Figure 7 1 is a schematic diagram showing the connection device 10 during connection according to the second embodiment.

[0052] In the second embodiment, the structure of the first joint body 16A is different from that of the first embodiment. The first joint body 16A has two extensions 18. The two extensions 18 are arranged, for example, at intervals in the width direction of the female connector component 14. The width direction of the female connector component 14 is a direction orthogonal to the insertion and removal direction DA and the engagement / disengagement direction DB. Each extension 18 has a rod portion 36 and a protrusion 38. No engagement hole 18HL is formed in each extension 18.

[0053] The rod portion 36 extends along the plugging and unplugging direction DA. The rod portion 36 extends, for example, from the first surface 14F1 of the female connector component 14. The rod portion 36 may also be cylindrical. The protrusion 38 protrudes from the outer peripheral surface (side surface) of the front end portion of the rod portion 36 in a direction orthogonal to the plugging and unplugging direction DA (including the engagement / disengagement direction DB). The protrusion 38 may protrude from the entire circumference of the side surface of the rod portion 36, or may protrude from the side surface portion of the rod portion 36 only in the engagement direction DB1. The front end portion of the rod portion 36 is the end portion in the removal direction DA2. An inclined surface 38F is formed on the protrusion 38. The surface of the protrusion 38 on the removal direction DA2 side is formed as the inclined surface 38F. The inclined surface 38F is inclined in a manner that the closer it is to the base end of the rod portion 36, the farther it is away from the rod portion 36.

[0054] In the second embodiment, the structure of the second bonded body 16B is different from that of the first embodiment. Figure 8 It is an exploded perspective view showing a second bonded body 16B according to the second embodiment. Fig. 9 It is a cross-sectional view of the detachable structure 16 according to the second embodiment, showing a state in which the detachable structure 16 is engaged with the extending portion 18 .

[0055] The cover plate 20B of the base portion 20 covers the surface of the base body 20A in the insertion direction DA1. A first arrangement space 20SP1 ( Fig. 9 Two insertion holes 20HL are formed in the base portion 20 (the base body 20A and the cover plate 20B). The two insertion holes 20HL include a part of the first arrangement space portion 20SP1.

[0056] The stopper 22 is disposed in the first arrangement space 20SP1. The stopper 22 is formed in a plate shape and connected to the operation portion 26. The stopper 22 is urged in the insertion direction DA1 by the second urging portion 42 via the pressing plate 40. The stopper 22 is urged toward the outside (engaging direction DB1 side) of the base 20 by the urging portion 24 via the operation portion 26.

[0057] Two through holes 22HL are formed in the stopper 22 along the insertion and extraction direction DA. Each through hole 22HL can pass through the extension 18. A portion of the periphery of the through hole 22HL in the stopper 22 is hooked and engaged with the step between the protrusion 38 of the extension 18 and the rod 36.

[0058] Next, the operation of the second joint body 16B when the extension portion 18 is inserted and removed will be described. Fig. 10A As shown, in a state where the extension portion 18 is not inserted into the insertion hole 20HL, when the through hole 22HL is observed from the front along the insertion direction DA1, the through hole 22HL and the insertion hole 20HL are located at positions offset from the engagement / disengagement direction DB. Therefore, a portion of the periphery of the through hole 22HL in the stopper 22 is located in the insertion hole 20HL. Therefore, when the extension portion 18 is inserted into the insertion hole 20HL, the inclined surface 38F of the protrusion 38 contacts the stopper 22. When the extension portion 18 is further inserted, due to the insertion force of the extension portion 18, the stopper 22 slides toward the inner side of the base portion 20 (the engagement release direction DB2 side).

[0059] When the extension portion 18 is inserted and the protrusion 38 is pulled out from the through hole 22HL in the removal direction DA2, as shown in FIG. Fig. 9 As shown in FIG. 1 , due to the urging force of the urging portion 24, the stopper 22 slides toward the outside of the base portion 20 (the engagement direction DB1 side) and stays at the engagement position. As a result, the stopper 22 is hooked on the step between the protrusion 38 of the extension portion 18 inserted into the insertion hole 20HL and the rod portion 36, and engages with the extension portion 18. This engagement state is maintained by the urging force of the urging portion 24.

[0060] Therefore, the extension portion 18 does not come out of the insertion hole 20HL. Therefore, even if the pressure of the fluid flowing between the convex flow path end portion 12A and the concave flow path end portion 14A increases, the connection between the male connector member 12 and the female connector member 14 can be prevented from being intentionally disconnected.

[0061] When the pressure receiving surface 26F of the operating portion 26 is pressed while the stopper 22 is engaged with the extension portion 18, the stopper 22 connected to the operating portion 26 slides toward the inner side of the base portion 20 (toward the engagement release direction DB2). Fig. 10B As shown in FIG. 1 , when the through hole 22HL is viewed from the front along the insertion direction DA1, the through hole 22HL in the stopper 22 overlaps with the insertion hole 20HL as the stopper 22 slides. That is, the peripheral edge of the through hole 22HL in the stopper 22 is separated from the insertion hole 20HL, and the engagement of the stopper 22 with respect to the extension 18 is released. At this time, the extension 18 can be pulled out from the insertion hole 20HL. In this way, the connection between the male connector component 12 and the female connector component 14 can be intentionally released.

[0062] The second embodiment may also be modified. For example, the extension portion 18 may be one or more than three. In the case where there are multiple extension portions 18, the through hole 22HL may be formed in a number corresponding to the extension portions 18, or may be formed as a long hole into which the extension portion 18 can be inserted. In addition, in the case where there are multiple extension portions 18, the insertion hole 20HL may be one into which two or more extension portions 18 can be inserted, or may be multiple corresponding to the two or more extension portions 18. The force-applying portion 24 and the operating portion 26 are the same. In addition, for example, the protrusion 38 may also protrude from the outer peripheral surface between the front end and the base end of the rod portion 36. In this case, the inclined surface 38F is formed at the front end portion of the rod portion 36.

[0063] (Third Embodiment)

[0064] Next, the attachment and detachment structure 16 of the third embodiment will be described. In the third embodiment, the same components as those of the attachment and detachment structure 16 are denoted by the same reference numerals, and detailed description thereof will be omitted. Fig.11 It is a schematic diagram showing the connection device 10 in the non-connected state according to the third embodiment. Fig.12 1 is a schematic diagram showing the connection device 10 during connection according to the third embodiment.

[0065] In the third embodiment, the first engaging body 16A is provided in the male connector component 12, and the second engaging body 16B is provided in the female connector component 14. Alternatively, the first engaging body 16A may be provided in the female connector component 14, and the second engaging body 16B may be provided in the male connector component 12.

[0066] Fig.13 It is a cross-sectional view of the attachment and detachment structure 16 according to the third embodiment, showing a state in which the attachment and detachment structure 16 is engaged with the extension portion 18 . Fig.14 It is a cross-sectional view of the attachment and detachment structure 16 according to the third embodiment, showing a state in which the engagement of the extension portion 18 is released.

[0067] In the third embodiment, the structure of the first joint body 16A is different from that of the first embodiment. The extension portion 18 of the first joint body 16A has a plurality of protrusions 50 on the outer peripheral surface of the extension portion 18. The plurality of protrusions 50 are arranged at intervals in the circumferential direction of the extension portion 18 (see Fig.11 ) In addition, the engaging hole 18HL is not formed in the extending portion 18 .

[0068] In addition, in the third embodiment, the structure of the second joint body 16B is different from that of the first embodiment. The second joint body 16B has a base portion 20 and a stopper portion 22. On the other hand, the second joint body 16B does not have a force application portion 24 and an operating portion 26. The first configuration space portion 20SP1 and the second configuration space portion 20SP2 are not formed in the base portion 20, but only an insertion hole 20HL is formed. The stopper portion 22 has a tube portion 52 and a protrusion 54. The tube portion 52 can also be embedded in the insertion hole 20HL. Alternatively, the tube portion 52 can also be formed integrally with the base portion 20. The tube inside the tube of the tube portion 52 is the insertion hole 20HL. The protrusion 54 protrudes from the inner surface of the tube portion 52 to the insertion hole 20HL (inside the tube of the tube portion 52) along a direction orthogonal to the plug-in and pull-out direction DA (including the engagement / disengagement direction DB). The protrusion 54 can be arranged on the entire circumference, or it can be arranged intermittently in the circumference.

[0069] The extension portion 18 of this embodiment is configured to allow a portion of the plurality of protrusions 50 to move in and out along the engagement / disengagement direction DB so that the plurality of protrusions 50 engage with the protrusions 54 of the stopper 22. The extension portion 18 includes a cylinder 56, a shaft 58, a biasing portion 60, and an operating portion 62.

[0070] The cylinder 56 is formed by connecting the front end cylinder 56A and the rear end cylinder 56B. The cylinder 56 is fixed to the male connector component 12. The cylinder 56 penetrates the male connector component 12 and extends in the insertion and extraction direction DA. The cylinder 56 extends from the first surface 12F1 of the male connector component 12 in the insertion direction DA1, and extends from the second surface 12F2 of the male connector component 12 in the extraction direction DA2.

[0071] A first locking portion 56C is formed on the inner circumferential surface of the front end side cylinder 56A to lock the force applying portion 60. In addition, a plurality of cylinder insertion holes 56HL are formed on the outer circumferential surface of the front end side cylinder 56A. The plurality of cylinder insertion holes 56HL are located at intervals in the circumferential direction of the cylinder 56. A protrusion 50 is arranged on each cylinder insertion hole 56HL. Each cylinder insertion hole 56HL is formed so that a portion of the protrusion 50 can protrude from the outer circumferential surface of the cylinder 56. The protrusion 50 is formed in a spherical shape with a radius larger than the thickness of the cylinder 56.

[0072] The shaft 58 is formed by connecting the front end side shaft 58A and the rear end side shaft 58B. The shaft 58 can move inside the cylinder 56. On the outer peripheral surface of the rear end side shaft 58B, a second locking portion 58C is formed to lock the force application portion 60. The second locking portion 58C is located at a position spaced apart from the first locking portion 56C in the extraction direction DA2. In addition, a cutout 56N for inserting a part of the plurality of protrusions 50 is formed on the outer peripheral surface of the front end side shaft 58A. The cutout 56N has a fixed portion 56N1 and a non-fixed portion 56N2. The fixed portion 56N1 is a portion that fixes the protrusion 50 and is located at the end of the cutout 56N in the insertion direction DA1. Compared with the non-fixed portion 56N2, the depth of the fixed portion 56N1 from the outer peripheral surface of the front end side shaft 58A is shallower.

[0073] The urging portion 60 urges the shaft 58 relative to the cylinder 56 so that a part of the plurality of protrusions 50 protrudes from the outer peripheral surface of the cylinder 56. The urging portion 60 may be a coil spring. The urging portion 60 is disposed between the first locking portion 56C and the second locking portion 58C.

[0074] The urging portion 60 urges the shaft 58 in the extraction direction DA2 relative to the cylinder 56. Therefore, the protrusion 50 is fixed to the fixing portion 56N1 of the notch 56N. In this case, a part of the protrusion 50 protrudes from the cylinder insertion hole 56HL and maintains the protruding state.

[0075] The operating portion 62 is a portion that causes the plurality of protrusions 50 to retreat from the outer peripheral surface of the cylinder 56 by operating the shaft 58 in a direction opposite to the force direction of the force applying portion 60. The operating portion 62 is connected to the end of the shaft 58 in the extraction direction DA2. The operating portion 62 is formed in a plate shape, for example. The operating portion 62 has a pressure-receiving surface 62F pressed by a user. When the pressure-receiving surface 62F is pressed, the shaft 58 connected to the operating portion 62 slides in the insertion direction DA1. Therefore, the fixation of the protrusion 50 to the fixed portion 56N1 of the notch 56N is released. In this case, the protrusion 50 can retreat to the non-fixed portion 56N2 of the notch 56N.

[0076] Next, the operation of the second joint body 16B when the extension portion 18 is inserted and removed will be described. The extension portion 18 is inserted into the insertion hole 20HL in a state where the pressure-receiving surface 62F of the operating portion 62 is pressed. When the pressure-receiving surface 62F of the operating portion 62 is pressed, as described above, the shaft 58 connected to the operating portion 62 slides in the insertion direction DA1, thereby releasing the locking of the plurality of protrusions 50. Therefore, the plurality of protrusions 50 can retreat to the non-fixed portion 56N2 of the notch 56N.

[0077] When the front end side cylinder 56A of the extension part 18 starts to be inserted into the insertion hole 20HL, first, the plurality of protrusions 50 partially protruding from the outer peripheral surface of the front end side cylinder 56A come into contact with the protrusion 54 protruding into the insertion hole 20HL. When the extension part 18 is further inserted, the plurality of protrusions 50 are pressed from the fixed part 56N1 of the notch 56N into the non-fixed part 56N2 due to the insertion force of the extension part 18.

[0078] When the extension portion 18 is inserted into the insertion hole 20HL, the pressure of the operating portion 62 on the pressure-receiving surface 62F is released. When the pressure on the pressure-receiving surface 62F is released, the shaft 58 slides in the extraction direction DA2 due to the force applied by the force-applying portion 60, and the plurality of protrusions 50 are fixed to the fixing portion 56N1 of the cutout 56N. In this case, a part of the plurality of protrusions 50 is pushed out to the step between the tube portion 52 and the protrusion 54. As a result, the plurality of protrusions 50 are hooked on the step between the tube portion 52 and the protrusion 54 and engaged. This engaged state is maintained by the force applied by the force-applying portion 60. Thus, even if the pressure of the fluid flowing between the convex flow path end portion 12A and the concave flow path end portion 14A increases, the connection between the convex connector component 12 and the concave connector component 14 can be prevented from being intentionally released.

[0079] When the pressure receiving surface 62F of the operating portion 62 is pressed while the plurality of protrusions 50 are engaged, the shaft 58 connected to the operating portion 62 slides in the insertion direction DA1 as described above, thereby releasing the engagement of the plurality of protrusions 50. Therefore, the plurality of protrusions 50 can be withdrawn to the non-fixed portion 56N2 of the notch 56N, and as a result, the extension portion 18 can be pulled out of the insertion hole 20HL. In this way, the connection between the male connector component 12 and the female connector component 14 can be intentionally released.

[0080] The third embodiment may be modified. For example, the operation portion 62 may be formed to be grippable. Fig.15 1 is a schematic diagram showing the connection device 10 in a non-connected state according to a modification of the third embodiment. Fig.16 It is a cross-sectional view of the attachment and detachment structure 16 according to the modification of the third embodiment, showing a state in which the attachment and detachment structure 16 is engaged with the extension portion 18 . Fig.17 It is a cross-sectional view of the detachable structure 16 according to the modified example of the third embodiment, showing a state in which the engagement of the extending portion 18 is released.

[0081] In the present modification, the first coupling body 16A has two extending portions 18. The two extending portions 18 are arranged at a distance from each other in the width direction of the male connector component 12, for example.

[0082] The first joint body 16A newly includes a support frame 64. The support frame 64 covers a portion of each extension portion 18. The portion covered by the support frame 64 is a portion of each extension portion 18 extending from the second surface 12F2 of the male connector component 12 in the extraction direction DA2. A holding hole 64HL is formed in the support frame 64. The holding hole 64HL is formed between two extension portions 18.

[0083] The operation part 62 is connected to the two extension parts 18. The operation part 62 has an operation main body part 62A and two connection parts 62B. The operation main body part 62A is a portion to be grasped, and is arranged in the grasping hole 64HL. One of the two connection parts 62B is a portion that connects the operation main body part 62A to the end of the cylinder 56 in the extraction direction DA2 of one extension part 18. The other of the two connection parts 62B is a portion that connects the operation main body part 62A to the end of the cylinder 56 in the extraction direction DA2 of the other extension part 18.

[0084] The fixing portion 56N1 is located at the end of the notch 56N in the extraction direction DA2, and the urging portion 60 urges the shaft 58 in the insertion direction DA1 relative to the cylinder 56. Therefore, the protrusion 50 is fixed to the fixing portion 56N1 located at the end of the notch 56N in the extraction direction DA2.

[0085] In this modification, when the operation portion 62 moves toward the support frame 64, the shaft 58 connected to the operation portion 62 slides in the extraction direction DA2. Therefore, the protrusion 50 is released from the fixing portion 56N1 of the notch 56N. As a result, the extension portion 18 can be removed from the insertion hole 20HL.

[0086] According to the present modification, since the operation portion 62 is formed to be grippable, it is easy to transmit force to the shaft 58. As a result, the locking of the plurality of protrusions 50 can be released stably and easily.

[0087] The present disclosure also discloses the following additional notes.

[0088] (Note 1)

[0089] The present disclosure relates to a connection device (10) for connecting a flow path, the connection device (10) comprising: a male connector component (12), the male connector component having a plurality of male flow path end portions (12A); a female connector component (14), the female connector component having a female flow path end portion (14A) configured to be capable of one-to-one mating with the plurality of the male flow path end portions; a first engaging body (16A), the first engaging body being provided on one of the male connector component and the female connector component; and a second engaging body (16B), the first engaging body The second engaging body is arranged on the other of the male connector component and the female connector component, the first engaging body has an extension portion (18), which extends along the plugging and unplugging direction (DA) of the male flow path end portion and the female flow path end portion, and the second engaging body has: a base portion (20) formed with an insertion hole (20HL) capable of inserting the extension portion; and a stop portion (22), which is supported by the base portion and engages with the extension portion inserted through the insertion hole to prevent the extension portion from falling out of the insertion hole.

[0090] (Note 2)

[0091] The present disclosure may also be a connecting device as described in Note 1, wherein the second coupling body comprises: a force-applying portion (24), which applies force to the stop portion toward the outer peripheral surface of the extension portion to engage the stop portion with the extension portion; and an operating portion (26), which operates the stop portion in a direction opposite to the force-applying direction of the force-applying portion to release the engagement between the stop portion and the extension portion.

[0092] (Note 3)

[0093] The present disclosure may also be that the connection device described in Appendix 2 has a locking hole (18HL) formed in the extension portion along a direction orthogonal to the plug-in and pull-out direction, and the stopper portion has a hook (32) that is inserted into the locking hole and hooked on the extension portion.

[0094] (Note 4)

[0095] The present disclosure may also be that the connection device described in Supplement 3 has an inclined surface (32F) formed on the hook, and the inclined surface is used to separate the stopper from the insertion hole by inserting the extension portion into the insertion hole.

[0096] (Note 5)

[0097] The present disclosure may also be a connecting device as described in Appendix 2, wherein the extension portion has a protrusion (38) which protrudes from the extension portion in a direction orthogonal to the plug-in and pull-out direction, and a through hole (22HL) is formed in the stop portion, the through hole being capable of allowing the extension portion inserted into the insertion hole to pass therethrough, and the protrusion inserted into the through hole is hooked on the stop portion by the force applied by the force applying portion.

[0098] (Note 6)

[0099] The present disclosure may also be the connection device described in Appendix 1, wherein the extension portion has a protrusion (50) protruding from the outer peripheral surface of the extension portion, and the stop portion has a protrusion (54) hooked on the protrusion of the extension portion inserted into the insertion hole.

[0100] (Note 7)

[0101] The present disclosure may also be a connecting device as described in Note 6, wherein the extension portion comprises: a cylinder (56); a shaft (58) capable of moving inside the cylinder; a force-applying portion (60) that applies force to the shaft so that a portion of the protrusion protrudes from the outer peripheral surface of the cylinder; and an operating portion (62) that operates the shaft in a direction opposite to the force-applying direction of the force-applying portion so that the protrusion protruding from the outer peripheral surface of the cylinder retreats.

[0102] (Note 8)

[0103] The present disclosure may also be a connecting device as described in Appendix 7, wherein the protrusion is formed into a spherical shape with a radius larger than the thickness of the cylinder, a cylinder insertion hole (56HL) is formed in the cylinder, the cylinder insertion hole enables a portion of the protrusion to protrude from the outer peripheral surface of the cylinder, a cutout (56N) is formed on the outer peripheral surface of the shaft, the cutout is used for a portion of the protrusion to enter, and the force-applying portion applies force to the shaft so that the protrusion is stopped at the end of the cutout on one side of the insertion and removal direction.

[0104] (Note 9)

[0105] The present disclosure may be the connection device described in Supplementary Note 7, wherein the first connector has a plurality of the extension portions, and the operation portion is connected to the plurality of the extension portions in a grippable manner.

[0106] In addition, the present invention is not limited to the above disclosure, and various structures can be adopted without departing from the gist of the present invention.

Claims

1. A connecting device (10) for connecting a flow path, characterized in that: have: A male connector component (12) having a plurality of convex flow path end portions (12A); a female connector component (14) having a female flow path end portion (14A) configured to be able to be fitted one-to-one with the plurality of the male flow path end portions; a first engaging body (16A) provided on one of the male connector component and the female connector component; as well as a second engaging body (16B) provided on the other of the male connector component and the female connector component, The first connecting body has an extension portion (18) extending along a plugging and unplugging direction (DA) of the convex flow path end portion and the concave flow path end portion. The second junction body has: a base portion (20), the base portion being formed with an insertion hole (20HL) into which the extension portion can be inserted; and A stopper (22) is supported by the base portion and engages with the extension portion inserted through the insertion hole to prevent the extension portion from falling out of the insertion hole.

2. The connection device according to claim 1, characterized in that The second junction body has: a force applying portion, the force applying portion applying force to the stopper portion toward the outer periphery of the extension portion so that the stopper portion engages with the extension portion; and An operating portion operates the stopper portion in a direction opposite to the urging direction of the urging portion to release the engagement between the stopper portion and the extending portion.

3. The connection device according to claim 2, characterized in that The extending portion is provided with an engaging hole (18HL) along a direction perpendicular to the plugging and unplugging direction. The stopper has a hook (32) which is inserted into the engaging hole and hooked on the extending portion.

4. The connection device according to claim 3, characterized in that The hook is formed with an inclined surface (32F) for separating the stopper from the insertion hole when the extension portion is inserted into the insertion hole.

5. The connection device according to claim 2, characterized in that: The extension portion has a protrusion, which protrudes from the extension portion in a direction orthogonal to the insertion and removal direction. The stopper portion is formed with a through hole (22HL) through which the extension portion inserted into the insertion hole can be inserted. The protrusion inserted through the through hole is hooked on the stopper by the urging force of the urging portion.

6. The connection device according to claim 1, characterized in that The extension portion has a protrusion (50) protruding from the outer peripheral surface of the extension portion. The stopper has a protrusion that is hooked on the protrusion of the extending portion inserted into the insertion hole.

7. The connection device according to claim 6, characterized in that The extension portion comprises: Cylinder (56); a shaft (58) movable within the cylinder; a force applying portion that applies force to the shaft so that a portion of the protrusion protrudes from the outer peripheral surface of the cylinder; as well as An operating portion operates the shaft in a direction opposite to the urging direction of the urging portion to retract the protrusion protruding from the outer peripheral surface of the cylinder.

8. The connection device according to claim 7, characterized in that The protrusion is formed into a spherical shape having a radius larger than the thickness of the cylinder. A cylinder insertion hole (56HL) is formed on the cylinder, and the cylinder insertion hole enables a part of the protrusion to protrude from the outer peripheral surface of the cylinder. A notch (56N) is formed on the outer peripheral surface of the shaft, and the notch is used for a part of the protrusion to enter. The urging portion urges the shaft so that the protrusion is locked to one end portion of the cutout in the insertion and removal direction.

9. The connection device according to claim 7, characterized in that: The first joint body has a plurality of the extension portions. The operation portion is connected to the plurality of extension portions in a graspable manner.

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