Container connection system and fluid container

Abstract

To provide a vessel which can be connected to a vessel holder and can open and close a valve with a simple configuration.SOLUTION: A vessel connecting system comprises: a fluid vessel in which fluid flows, wherein the fluid vessel comprises a vessel connecting part having an inner conduit which is in communication with the inside of the fluid vessel and in which the fluid flows, and an outer conduit which is formed outside the inner conduit while being in communication with the inside of the fluid vessel and in which the fluid flows, the outer conduit being defined by an outer face of the inner conduit and an inner face of the outer conduit; and a vessel holder that receives the vessel connecting part and is connected to the fluid vessel, the vessel holder having a conduit which can be connected to the inner conduit of the fluid vessel upon receiving the vessel connecting part, and another conduit which can be connected to the outer conduit of the fluid vessel.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a container connection system, and more particularly to a container connection system for a container containing a filter material. [Background technology]

[0002] In container connection systems where fluid containers are detachably connected, check valves are installed to close the pipelines of the fluid containers. In these components, when the fluid container is attached and in use, increasing the pressure on the primary side (upstream side) causes the diaphragm to move in the direction of flow, creating a gap and allowing the fluid to flow. When the fluid container is removed, decreasing the pressure on the primary side (upstream side) causes the diaphragm to close the fluid flow. For this reason, check valves must be pressure-resistant, and metal parts such as springs or diaphragms have generally been used. Summary of the Invention [Problem to be solved by the invention]

[0003] However, check valves in conventional container connection systems open and close depending on the pressure of the fluid on the primary (upstream) side, so the check valve closes when the pressure of the fluid on the primary (upstream) side is reduced, regardless of whether the fluid container is removed. This means that fluid remains inside the fluid container, and even when the fluid container is removed, the fluid remains inside. In addition, because metal parts are used, friction with particles in the fluid being filtered can easily cause sparks, which can lead to fires.

[0004] Therefore, there is a need for a valve body that does not operate due to the pressure of the fluid on the primary side (upstream side), but rather closes the pipeline in response to the act of removing the fluid container, and at the same time, a container connection system to which the fluid container can be detachably connected. [Means for solving the problem]

[0005] a container connection system comprising: a fluid container through which a fluid flows, the fluid container comprising: a container connection part having an inner pipe communicating with the interior of the fluid container and through which the fluid flows; and an outer pipe communicating with the interior of the fluid container and formed outside the inner pipe and through which the fluid flows, the outer pipe being defined by an outer surface of the inner pipe and an inner surface of the outer pipe; and a container holder that receives the container connection part to connect to the fluid container, the container holder having a pipe connectable with the inner pipe of the fluid container and another pipe connectable with the outer pipe of the fluid container when the container connection part is received, The problem is solved by a container connection system comprising a connection valve body stored in the fluid container and having a locking portion and a second locking portion, the connection valve body having a first position in which the first locking portion locks onto the fluid container to close the outer pipeline when the fluid container and the container holder are separated, and a guide portion that encourages movement of the connection valve body between a first position in which the first locking portion locks onto the fluid container to close the outer pipeline when the container holder is receiving the container connection portion, and a second position in which the second locking portion engages with the container holder when the container holder receives the container connection portion, thereby fixing the fluid container to the container holder, fluidly connecting the pipeline of the container holder to the inner pipeline, and fluidly connecting the other pipeline of the container holder to the outer pipeline.

[0006] a container connection part having an inner pipe through which a fluid flows and which communicates with the interior of the fluid container and through which the fluid flows, and an outer pipe that communicates with the interior of the fluid container and is formed outside the inner pipe and through which the fluid flows, the outer pipe being defined by an outer surface of the inner pipe and an inner surface of the outer pipe; The problem is solved by a fluid container which includes a connection valve body stored in the container, the connection valve body having a guide portion which encourages movement of the connection valve body between a first position in which the first locking portion locks onto the fluid container to close the outer pipeline when the fluid container and the container holder are separated, and a second position in which the second locking portion engages with the container holder when the container holder receives the container connection portion, thereby fixing the fluid container to the container holder, fluidly connecting the pipeline of the container holder to the inner pipeline, and fluidly connecting the other pipeline of the container holder to the outer pipeline. [Effects of the Invention]

[0007] According to the present invention, it is possible to connect the container and the container holder and open and close the valve with a simple structure. [Brief explanation of the drawings]

[0008] [Figure 1] 1 shows a cross-sectional view of a container connection system according to an embodiment of the present invention. [Figure 2] 1 shows an example of a connection valve body of a container connection system according to an embodiment of the present invention. [Figure 3A] 1 is a cross-sectional view of the container connection system according to the embodiment of the present invention, showing a state in which the fluid container is separated from the container holder. [Figure 3B] 1 is a cross-sectional view of the container connection system according to the embodiment of the present invention, showing a state immediately before a fluid container is connected to a container holder. [Figure 3C]1 is a cross-sectional view of a state in which a fluid container is connected to a container holder in a container connection system according to an embodiment of the present invention. [Figure 4] 10A and 10B are views showing another example of the second locking portion of the connection valve body of the container connection system according to the embodiment of the present invention. [Figure 5A] 10 is a cross-sectional view of a container connection system according to another embodiment of the present invention, in which a fluid container is spaced apart from a container holder. FIG. [Figure 5B] 10 is a cross-sectional view of a state in which a fluid container is connected to a container holder in a container connection system according to another embodiment of the present invention. FIG. [Figure 5C] FIG. 10 is a cross-sectional view of another embodiment of a connection valve body in the container connection system of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0009] A container connection system 1 according to an embodiment of the present invention will be described with reference to FIGS. 1, 2, and 3A. FIG. 1 shows a cross-sectional view of the container connection system 1. FIG. 2 shows an example of a connection valve body 4, which is one of the components of the container connection system 1. The container connection system 1 includes a fluid container 2, a container holder 3, and the connection valve body 4. FIG. 3A is an enlarged view of a connection portion between the fluid container 2 and the container holder 3 in the container connection system 1. The fluid container 2 is used so as to be detachably connected to the container holder 3, and the container connection system 1 contributes to this connection. The direction in which the fluid container 2 is detachably connected to the container holder 3 is defined as the connection direction. Hereinafter, in this specification, the "connection direction" refers to the direction in which the fluid container 2 is detachably connected to the container holder 3, and the axis of this direction is defined as the "connection axis."

[0010] The fluid container 2 is typically a container having an interior cavity that is elongated in the direction of the connecting axis. The fluid container 2 generally has a shape symmetrical about the connecting axis, typically a cylindrical shape. A flow path structure is formed inside the fluid container 2 so that the fluid flows from upstream to downstream. The fluid container 2 has an inner conduit 21 and an outer conduit 22 through which the fluid flows. Both the inner conduit 21 and the outer conduit 22 communicate with the flow path structure inside the fluid container 2 to form a flow path. Either the inner conduit 21 or the outer conduit 22 may be set upstream. That is, a flow path is formed in which the fluid flows from the inner conduit 21 through the interior of the container to the outer conduit 22, or conversely, a flow path is formed in which the fluid flows from the outer conduit 22 through the interior of the container to the inner conduit 21. The outer conduit 22 is formed outside the inner conduit 21, and the inner conduit 21 and the outer conduit 22 form a double conduit. That is, the inner conduit 21 is a closed region whose cross section is defined by the conduit wall of the inner conduit 21. The outer conduit 22 is defined by an outer surface 21a of the conduit wall of the inner conduit 21 and an inner surface 22a of the outer conduit 22. The inner conduit 21 and the outer conduit 22 form a container connection part 2a formed at one end of the fluid container 2. For example, the container connection part 2a can be defined so that the outer surface 22b of the outer conduit 22 becomes the outer surface of the container connection part 2a. A sealing material 2b such as an O-ring is attached to the outer surface 22b of the outer conduit 22, which is the outer surface of the container connection part 2a.

[0011] The fluid container 2 can be a general container that is used in a fluid system through which a fluid flows and is detachable for use. In particular, a filter material 23 that filters impurities contained in the fluid can be stored in the flow path structure through which the fluid flows in the fluid container 2. In this case, the fluid container 2 functions as a filter container.

[0012] The container holder 3 has a structure for receiving the container connection part 2a, and when the container connection part 2a is received, it connects to the fluid container 2. The container holder 3 has a conduit 31 connectable to the inner conduit 21 of the fluid container 2 and a conduit 32 connectable to the outer conduit 22 of the fluid container 2. When the container connection part 2a is connected to the container holder 3, the inner conduit 21 and the connectable conduit 31 form a fluid connection in a sealed state from the outside, and the outer conduit 22 and the connectable conduit 32 form a fluid connection in a sealed state from the outside. One of the conduit 31 and the conduit 32 is connected to a fluid source, and the other is connected to a fluid discharge destination. When the fluid container 2 and the container holder 3 are connected, a flow path is formed in which the fluid flows from the conduit 31 through the inner conduit 21 to the inside of the container and then flows out to the conduit 32 through the outer conduit 22, or the fluid flows from the conduit 32 through the outer conduit 22 to the inside of the container and then flows out to the conduit 31 through the inner conduit 21.

[0013] The fluid container 2 has a connection valve body 4 therein. The main body of the connection valve body 4 has an inner circumferential shape in the form of a hole or notch in the center around the connection axis, and the surface along the periphery of the hole or the surface along the edge of the notch is defined as the inner sliding surface 41. The outer shape of the main body of the connection valve body 4 has an outer circumferential shape, and the surface along the periphery is defined as the outer sliding surface 42. The shape of the inner sliding surface 41 is a cross section of the inner circumferential shape of the connection valve body 4 perpendicular to the connection axis direction, and has a shape corresponding to the cross section of the outer conduit 22 of the fluid container 2 perpendicular to the connection axis direction, and is able to move freely so as to slide in the connection axis direction while in close contact with the outer surface 21a of the inner conduit 21 of the fluid container 2. The cross section of the outer sliding surface 42 is a cross section of the outer peripheral surface of the connection valve body 4 perpendicular to the connection axis direction, and has a shape corresponding to the cross section of the inner surface 22a of the outer pipeline 22 of the fluid container 2 perpendicular to the connection axis direction, and is capable of moving so as to slide in the connection axis direction while adhering closely to the inner surface 22a of the outer pipeline 22 of the fluid container 2.

[0014] Typically, the container connection part 2a is arranged to extend from the fluid container 2 in the connection direction, and the inner pipe line 21 and the outer pipe line 22 are also arranged to extend from the fluid container 2 in the connection direction. Typically, when connecting, the connection direction is set to be vertically downward. In other words, when connecting the fluid container 2 to the container holder 3, the container connection part 2a is arranged to extend downward from the fluid container 2.

[0015] At this time, the connection valve element 4 is located inside the container connection portion 2a at any position on the outer surface 21a of the inner pipe 21, in a state where it is tightly fitted to the outer surface 21a of the inner pipe 21 of the fluid container 2. Since the inner sliding surface 41 of the connection valve element 4 is tightly fitted to the outer surface 21a of the inner pipe 21, the connection valve element 4 is movable along the outer surface 21a of the inner pipe 21, but does not move in the absence of an external force. When the container connection portion 2a of the fluid container 2 is separated from the container holder 3, the connection valve element 4 is typically in a state where it is lowered to its lowest position in the vertical direction, which is the connection direction. The shape of the main body of the connection valve element 4 in a plane perpendicular to the connection axis corresponds to the shape of the outer pipe 22 of the fluid container 2. Therefore, in this position, as described below, the inner sliding surface 41 of the connecting valve body 4 is in close contact with the outer surface 21a of the inner pipeline 21 of the fluid container 2, and the outer sliding surface 42 of the connecting valve body 4 is in close contact with the inner surface 22a of the outer pipeline 22 of the fluid container 2, so that the main body of the connecting valve body 4 can close the outer pipeline 22 of the fluid container 2 and isolate the flow of fluid.

[0016] The connection valve element 4 has a first locking portion 43 and a second locking portion 44. The fluid container 2 has a stepped seat 26 on the inner surface 22a of the outer conduit 22 that extends from the inner surface 22a in a direction perpendicular to the connection axis toward the connection axis, and the first locking portion 43 abuts against the seat 26 to lock and hold the connection valve element 4 so that it does not fall out of the fluid container 2. The first locking portion 43 can be, for example, a tab that is arranged to extend from the outer periphery of the connection valve element 4 in a direction perpendicular to the connection axis.

[0017] The second locking portion 44 can be at least one flexible arm 441 extending from the main body of the connection valve body 4 in the direction of the connection axis, and a protrusion 442 arranged on the flexible arm 441. The flexible arm 441 can be flexibly deformed in a direction perpendicular to the connection axis due to the elasticity of the material, and the position of the protrusion 442 can move in the direction perpendicular to the connection axis due to the deformation of the flexible arm 441. The protrusion 442 has a mountain-like shape that protrudes from the surface of the flexible arm 441 in the direction perpendicular to the connection axis, and is provided with a sloped portion so that the height of the protrusion along the connection axis decreases from the most protruding point.

[0018] The container holder 3 has a groove serving as a recess 33. The recess 33 engages with the protrusion 442 of the second locking portion 44 of the connection valve body 4 when the fluid container 2 is connected to the container holder 3, and is therefore located at the position where the protrusion 442 of the second locking portion 44 will be located when the fluid container 2 is connected to the container holder 3. As shown in FIGS. 1 and 3A to 3C, the recess 33 can be located on the outer surface 31b of the pipeline 31 with the protrusion 442 of the second locking portion 44 facing toward the center of the connection direction. Alternatively, the recess 33 may be located on the inner surface 32a of the pipeline 32 with the protrusion 442 of the second locking portion 44 facing outward, opposite the center of the connection direction (not shown).

[0019] Next, with reference to FIG. 1 and FIG. 3A to FIG. 3C, how the container connection system 1 functions with the above structure and how the fluid container 2 connects to the container holder 3 will be described. In the container connection system 1, the fluid container 2 is separated from the container holder 3 (FIG. 1, FIG. 3A), and then the container connection portion 2a of the fluid container 2 is inserted into the container holder 3 in the connection direction. FIG. 3A shows the container connection system 1 in a state where the fluid container 2 is separated from the container holder 3. FIG. 3B shows the container connection system 1 in a state where the fluid container 2 is about to be connected to the container holder 3. FIG. 3C shows the container connection system 1 in a state where the fluid container 2 has been connected to the container holder 3. When the fluid container 2 is to be connected to the container holder 3, the container connection portion 2a faces downward, and the connection axis of the fluid container 2 is oriented vertically. The following description will be given in this state.

[0020] When the fluid container 2 is separated from the container holder 3, i.e., when the fluid container 2 is being handled independently, the connection valve element 4 is in its lowest position in the vertical direction, which is the connection direction. In this state, the first locking portion 43 of the connection valve element 4 is locked to the seat 26 on the inner surface 22a of the outer conduit 22 of the fluid container 2, and the main body of the connection valve element 4 closes the outer conduit 22 (first position; FIG. 3A). In this state, the flexible arm 441 of the second locking portion 44 extends in the connection direction. In this state, the interior of the fluid container 2 is isolated from the outside by the connection valve element 4.

[0021] Next, the container connection portion 2a of the fluid container 2 is inserted into the container holder 3. Then, just before the fluid container 2 to be connected to the container holder 3 is connected to the container holder 3, the flexible arm 441 of the second locking portion 44 comes into contact with the container holder 3 ( FIG. 3B ). The position of contact is not particularly limited as long as it can be any position on the container holder 3, but it can typically be set so as to come into contact with the conduit 32 connecting to the inner conduit 21 of the fluid container 2. From this state, the container connection portion 2a is further inserted into the container holder 3. As the container connection portion 2a is inserted into the container holder 3, the connection valve element 4 is pushed up by the container holder 3, and the inner sliding surface 41 of the connection valve element 4 moves so as to slide along the outer surface 21a of the inner conduit 21, and the outer sliding surface 42 of the connection valve element 4 moves so as to slide along the inner surface 22a of the outer conduit 22, causing the connection valve element 4 to rise relative to the outer conduit 22. During this movement, flexible arm 441 expands due to its elastic force in a direction perpendicular to the connection direction (radial direction of container holder 3: direction of arrow X), and conduit 31 of container holder 3 enters flexible arm 441.

[0022] Finally, when the container holder 3 receives the container connection portion 2a of the fluid container 2, the fluid container 2 and the container holder 3 are connected, and the fluid container 2 is fixed to the container holder 3 (second position; FIG. 3C). In this position, the convex portion 442 of the flexible arm 441 of the second locking portion 44 reaches the concave portion 33 of the container holder 3, and the convex portion 442 of the flexible arm 441 engages with and fits into the concave portion 33 of the container holder 3. In this position, the connection valve body 4 is raised relative to the inner conduit 21 in the connection direction and fixed, and the outer conduit 22 is opened. In this state, the inner conduit 21 of the fluid container 2 and the conduit 31 of the container holder 3 are fluidly connected, and the outer conduit 22 of the fluid container 2 and the conduit 32 of the container holder 3 are fluidly connected.

[0023] In this way, the connection valve element 4 is movable between a first position and a second position depending on the state of connection of the fluid container 2 to the container holder 3. In the second position, the seal 2b of the outer conduit 22, which is the container connection portion 2a of the fluid container 2, contacts the inner surface of the conduit 32 of the container holder 3, sealing it to prevent fluid leakage. At the same time, the inner conduit 21 of the container connection portion 2a of the fluid container 2 is inserted into the container holder 3, and the outer seal 21b of the inner conduit 21 contacts the inner surface 31a of the conduit 31 of the container holder 3, sealing it to prevent fluid leakage.

[0024] When removing the fluid container 2 from the container holder 3, the container connection portion 2a of the fluid container 2 is removed from the container holder 3 in the connection direction, in the reverse order of the order when connecting the fluid container 2 to the container holder 3. At this time, the container connection portion 2a of the fluid container 2 also moves in the reverse order of the order when connecting the fluid container 2 to the container holder 3. That is, when the fluid container 2 is moved so as to remove the container connection portion 2a from the container holder 3 in the connection direction, the flexible arm 441 prevents the connection valve element 4 from moving relative to the container holder 3 because the convex portion 442 of the flexible arm 441 is engaged with the concave portion 33 of the container holder 3. However, the fluid container 2 moves away from the container holder 3. Therefore, the connection valve element 4 moves relative to the fluid container 2 from the second position toward the first position within the fluid container 2. When the connection valve body 4 has finished moving to the first position within the fluid container 2, the convex portion 442 of the flexible arm 441 receives an external force from the fluid container 2 in the connection direction that causes the convex portion 442 to come out of the concave portion 33 of the container holder 3. This external force causes the convex portion 442 of the flexible arm 441 to move in a direction away from the concave portion 33 due to the slope of the convex portion 442 of the flexible arm 441. In response, the flexible arm 441 is deformed by an elastic force in a direction perpendicular to the connection direction (the radial direction of the container holder 3: the direction of arrow X) so as to move away from the concave portion 33, and the convex portion 442 of the flexible arm 441 completely comes out of the concave portion 33. When the convex portion 442 of the flexible arm 441 completely comes out of the concave portion 33, the elastic force returns the flexible arm 441 to a lower position in the direction perpendicular to the connection direction (the radial direction of the container holder 3: the direction of arrow X). From this point, when the container connection part 2a of the fluid container 2 is removed from the container holder 3 in the connection direction, the fluid container 2 separates from the container holder 3 and the connection valve element 4 returns to the first position, and in this state, as described above, the inner sliding surface 41 of the connection valve element 4 is in close contact with the outer surface 21a of the inner conduit 21 of the fluid container 2 and the outer sliding surface 42 of the connection valve element 4 is in close contact with the inner surface 22a of the outer conduit 22 of the fluid container 2, so that the main body of the connection valve element 4 closes the outer conduit 22 of the fluid container 2 and isolates the flow of fluid. In other words, the outer surface 21a of the inner conduit 21 and the inner surface 22a of the outer conduit 22 of the fluid container 2 function as a guide part that moves the connection valve element 4 along the connection axis between the first position and the second position.The guide section does not always need to slide the connecting valve element 4 in the direction of the connection axis along both the outer surface 21a of the inner conduit 21 of the fluid container 2 and the inner surface 22a of the outer conduit 22. The guide section may be configured so that at least one of the outer surface 21a of the inner conduit 21 of the fluid container 2 and the inner surface 22a of the outer conduit 22 slides the connecting valve element 4 in the direction of the connection axis. For example, in some cases, the guide section may be configured so that only the inner sliding surface 41 of the connecting valve element 4 moves along the outer surface 21a of the inner conduit 21 of the fluid container 2, and then the inner sliding surface 41 of the connecting valve element 4 moves along the outer surface 21a of the inner conduit 21 of the fluid container 2, and the outer sliding surface 42 of the connecting valve element 4 moves along the inner surface 22a of the outer conduit 22 of the fluid container 2. Such a configuration is also included in the function of the guide section.

[0025] 1 to 3C , conversely, as shown in FIG. 4 , the convex portion 442 of the second locking portion 44 may be a recess or hole that is the recess 443, and the recess 33 of the container holder 3 may be the convex portion 34. The recess 443 of the second locking portion 44 of the connection valve body 4 engages with the convex portion 34 when the fluid container 2 is connected to the container holder 3, and the convex portion 34 is disposed at the position where the recess 443 of the second locking portion 44 is located when the fluid container 2 is connected to the container holder 3. Even in this case, the recess 443 may have a recessed shape recessed from the surface of the flexible arm 441 in the direction perpendicular to the connection axis, and may have a sloped portion such that the depth of the recess decreases from the deepest point along the connection axis.

[0026] As described above, a typical embodiment has been described in which the connection valve body 4 has an inner sliding surface 41 and an outer sliding surface 42 as guide parts for moving the connection valve body 4 between the first position and the second position along the connection axis, the connection valve body 4 is movable so that the inner sliding surface 41 of the connection valve body 4 is in close contact with the outer surface 21a of the inner pipeline 21 of the fluid container 2 and the outer sliding surface 42 of the connection valve body 4 is in close contact with the inner surface 22a of the outer pipeline 22 of the fluid container 2, and the main body of the connection valve body 4 closes the outer pipeline 22 of the fluid container 2 to isolate the flow of fluid.

[0027] However, the guide portion is not limited to the inner sliding surface 41 of the connection valve body 4 and the outer sliding surface 42 of the connection valve body 4. The guide portion can have various configurations as long as it encourages the movement of the connection valve body between the first position and the second position.

[0028] For example, in another embodiment, the guide portion can be an extension member 23a extending in a direction along the inner pipe, i.e., in the direction of the connection axis. The connection valve element 4 described above can be modified to form a connection valve element 5 that can engage with the extension member 23a. For example, as shown in FIGS. 5A and 5B , the connection valve element 5 has a hole 51, and the connection valve element 5 is positioned so that the extension member 23a passes through the hole 51. A seal member (not shown) can be provided in either the extension member 23a or the hole 51 to increase the degree of adhesion. This allows the connection valve element 5 to move along the extension member 23a in the direction of the connection axis. The engagement between the connection valve element 5 and the extension member 23a is not limited to providing a hole 51 in the connection valve element 5. It can also be configured such that a notch (not shown) is provided in the connection valve element 5, and the notch (not shown) of the connection valve element 5 engages with the extension member 23a to move between a first position and a second position in the direction of the connection axis. The structure other than the guide portion is the same as that described above, so a detailed description will be omitted here.

[0029] 5A shows this embodiment in a state where the fluid container 2 and the container holder 3 are spaced apart, with the connection valve body 5 in a first position where it closes the outer conduit 22. FIG. 5B shows a state where the fluid container 2 is received in the container holder 3, with the connection valve body 5 in a second position where the second locking portion 54 of the connection valve body 5 is fitted into the recess 33 of the container holder 3. The second locking portion 54 of the connection valve body 5 functions in the same way as the second locking portion 44 of the connection valve body 4 described above.

[0030] 5C, the connection valve element 5 may be configured to have a slope 26a that narrows along the connection axis from the first position to the second position with respect to the seat 26 of the fluid container 2 when the connection valve element 5 is in the first position to close the outer conduit 22. The tab of the connection valve element 5 may be configured as a complementary slope having a contact surface 55 that contacts the slope 26a of the seat when the container holder 3 receives the container connection part 2a. A sealing member (not shown) may be disposed between the slope 26a and the contact surface 55 to increase the degree of contact. This allows the connection valve element 5 to close the outer conduit 22 when the connection valve element 5 is in the first position to close the outer conduit 22. [Explanation of symbols]

[0031] 1. Container Connection System 2 Fluid container 21 Inner conduit 22 Outer conduit 23 Filters 3 Container holder 31 Pipeline 32 Pipeline (other pipelines) 33 Recess (groove) 34 Convex part 4,5 Connection valve body 41 Inner sliding surface 42 Outer sliding surface 43 First locking portion (tab) 44,54 Second locking part 441 Flexible Arm 442 Convex 443 Recess

Claims

1. a fluid container having a fluid flowing therein, the fluid container comprising a container connection portion having an inner pipe communicating with the interior of the fluid container and through which the fluid flows, and an outer pipe communicating with the interior of the fluid container and formed outside the inner pipe and through which the fluid flows, the outer pipe being defined by an outer surface of the inner pipe and an inner surface of the outer pipe; a container holder that receives the container connection part and connects to the fluid container, the container holder having a line connectable to the inner line of the fluid container and another line connectable to the outer line of the fluid container when the container connection part is received in the container holder, the fluid container includes a connection valve body having a first locking portion and a second locking portion and housed in the fluid container; A container connection system comprising: a guide portion that stimulates movement of the connection valve body between a first position in which the first engaging portion engages with the fluid container to close the outer pipeline when the fluid container and the container holder are separated, and a second position in which the second engaging portion engages with the container holder when the container holder receives the container connection portion, thereby fixing the fluid container to the container holder, fluidly connecting the pipeline of the container holder to the inner pipeline, and fluidly connecting the other pipeline of the container holder to the outer pipeline.

2. 10. The container connection system of claim 1, A container connection system in which the second engaging portion is a flexible arm having a convex portion and the container holder has a concave portion in the container holder, or the second engaging portion is a flexible arm having a concave portion and the container holder has a convex portion in the container holder, and the engagement between the second engaging portion and the container holder is engagement between the convex portion and the concave portion.

3. 3. The container connection system according to claim 1 or 2, A container connection system in which the first engaging portion is a tab that is placed on the connection valve body, the fluid container has a seat that holds the tab, and the first engaging portion is engaged with the fluid container by the tab being held in the seat.

4. 4. The container connection system of claim 3, The seat has a slope that narrows along a direction from the first position to the second position, The tab has a contact surface that contacts the beveled surface when the container holder receives the container connection portion.

5. 5. A container connection system according to any one of claims 1 to 4, The connecting valve body has an inner sliding surface, The guide portion is the outer surface of the inner pipe, A container connection system in which the movement of the connection valve body is effected by the inner sliding surface of the connection valve body sliding along the outer surface of the inner pipeline.

6. 6. The container connection system of claim 5, The connecting valve body further includes an outer sliding surface; In the movement, the outer sliding surface slides along the inner surface of the outer pipeline.

7. 5. A container connection system according to any one of claims 1 to 4, The guide portion is an extension member extending along the inner pipe, the connecting valve body engages with the extension member; A container connection system in which the connection valve body moves along the extension member.

8. 8. A container connection system according to any one of claims 1 to 7, A container connection system, wherein the movement between the first position and the second position is induced by the second locking portion and the container holder.

9. 9. A container connection system according to any one of claims 1 to 8, comprising: A container connection system comprising: a filter material disposed inside the fluid container for filtering the fluid; and the fluid container being a filter container.

10. a container connection part having an inner pipe line through which a fluid flows and which communicates with the interior of the container, and an outer pipe line through which the fluid flows and which communicates with the interior of the container and is formed outside the inner pipe line, the outer pipe line being defined by an outer surface of the inner pipe line and an inner surface of the outer pipe line, and capable of being connected to a container holder; the container holder has a conduit connectable to the inner conduit of the fluid container and another conduit connectable to the outer conduit of the fluid container when the container holder receives the container connection portion and performs the connection; the fluid container includes a connection valve body having a first locking portion and a second locking portion and housed in the fluid container; The fluid container is provided with a guide portion that encourages movement of the connection valve body between a first position in which the first engaging portion engages with the fluid container to close the outer pipeline when the fluid container and the container holder are separated, and a second position in which the second engaging portion engages with the container holder when the container holder receives the container connection portion, thereby fixing the fluid container to the container holder, fluidly connecting the pipeline of the container holder to the inner pipeline, and fluidly connecting the other pipeline of the container holder to the outer pipeline.

11. 11. The fluid container of claim 10, A fluid container in which the second engaging portion is a flexible arm having a convex portion and the container holder has a concave portion in the container holder, or the second engaging portion is a flexible arm having a concave portion and the container holder has a convex portion in the container holder, and the engagement between the second engaging portion and the container holder is an engagement between the convex portion and the concave portion.

12. 12. The fluid container according to claim 10 or 11, A fluid container in which the first engaging portion is a tab placed on the connecting valve body, the fluid container has a seat that holds the tab, and the first engaging portion is engaged by the fluid container when the tab is held in the seat.

13. 13. The fluid container of claim 12, The seat has a slope that narrows along a direction from the first position to the second position, The tab has a contact surface that contacts the inclined surface when the container holder receives the container connection portion.

14. 14. The fluid container according to any one of claims 10 to 13, The connecting valve body has an inner sliding surface, The guide portion is the outer surface of the inner pipe, The fluid container in which the movement of the connection valve body is effected by the inner sliding surface of the connection valve body sliding along the outer surface of the inner pipe line.

15. 15. The fluid container of claim 14, The connecting valve body further includes an outer sliding surface; A fluid container in which the outer sliding surface slides along the inner surface of the outer pipe during the movement.

16. 14. The fluid container according to any one of claims 10 to 13, The guide portion is an extension member extending along the inner pipe, the connecting valve body engages with the extension member; The connecting valve body moves along the extension member.

17. 17. The fluid container according to any one of claims 10 to 16, The fluid container, wherein the movement between the first position and the second position is induced by the second engaging portion and the container holder.

18. 18. The fluid container according to any one of claims 10 to 17, The fluid container has a filter material inside the fluid container for filtering the fluid, and the fluid container is a filter container.

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