Connector for transferring fluid

Abstract

The invention provides a fluid transfer connector which does not bend or damage at a joint part between a plug and a socket and can stably supply fluid. In the provided connector (1) for fluid transfer, a plug (100) is provided with a first valve body part (110) and a cylindrical first accommodating part (120) for accommodating the first valve body part (110). The socket (200) is provided with a second valve body part (210), a cylindrical second accommodating part (220) for accommodating the second valve body part (210), a first supporting part (230) for supporting the second accommodating part (220) in a fixed state relative to an installation surface (S), a plug insertion part (240) into which the plug (100) is inserted, and a moving mechanism (250) for moving the plug insertion part (240) along an axis (X2) to switch between an open state and a closed state. And a second support section (260) that supports the load of the plug insertion section (240) at a predetermined position (Po) of the plug insertion section (240) along the axis (X2). The plug insertion section (240) has a lock mechanism (245) that is fixed so as not to move the plug (100) relative to the plug insertion section (240) along the axis (X2).

Description

Technical Field

[0001] The present invention relates to a connector for fluid transfer. Background Art

[0002] Conventionally, there is known a fluid transfer connection device that transfers fluid from a pipe connected to the plug to a pipe connected to the socket by inserting a plug into the socket (for example, Patent Document 1). In the fluid transfer connection device disclosed in Patent Document 1, after an operator fixes the plug to a slider of the socket, the slider is moved by using air pressure to bring a first valve on the socket side into contact with a second valve on the plug side, thereby causing the fluid to flow from the pipe on the plug side to the pipe on the socket side.

[0003] The fluid transfer coupling device shown in Patent Document 1 is a device that stably supplies fluid by supporting a plug inserted into a socket with a plug support portion arranged further forward than the front end of the socket, thereby preventing bending or damage of the connection portion between the plug and the socket.

[0004] Prior Art Literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent No. 4986520 Summary of the invention

[0007] Problems to be solved by the invention

[0008] However, in the fluid transfer coupling device disclosed in Patent Document 1, the plug support portion supports the plug at a position where the plug is not inserted into the socket. Therefore, due to the load of the plug on the socket side relative to the plug support portion or the fluid flowing therein, and the load of the pipe connected to the plug or the fluid flowing therein, the joint portion between the plug and the socket may be bent or damaged.

[0009] The present invention has been made in view of such actual conditions, and an object of the present invention is to provide a fluid transfer connector that can stably supply fluid without causing bending or damage at a joint portion between a plug and a socket.

[0010] Methods for solving problems

[0011] The present invention adopts the following means to solve the above-mentioned problems.

[0012] A fluid transfer connector according to a first aspect of the present invention comprises: a plug mounted on an end of a first pipe through which a fluid flows; a socket into which the plug is inserted and which is connected to a second pipe through which a fluid flowing in from the first pipe flows out, the plug having: a first valve body; a first housing portion which is cylindrical and houses the first valve body in a manner movable along a first axis, the socket having: a second valve body; a second housing portion which is cylindrical and houses the second valve body in a manner movable along a second axis; a first support portion which supports the second housing portion in a state fixed relative to a setting surface; and a plug insertion portion which It is formed into a cylindrical shape in a manner of surrounding the second storage portion, and the plug is inserted therein; a moving mechanism that causes the plug insertion portion to move along the second axis toward or away from the second storage portion, thereby switching an open state in which the first valve body portion is in contact with the second valve body portion and a closed state in which the first valve body portion is not in contact with the second valve body portion; a second supporting portion that supports the load of the plug insertion portion at a predetermined position of the plug insertion portion along the second axis, and the plug insertion portion has a locking mechanism that fixes the plug in a manner that does not cause the plug to move relative to the plug insertion portion along the second axis.

[0013] According to the fluid transfer connector involved in the first aspect of the present invention, the operator inserts the plug into the socket and activates the locking mechanism of the plug insertion part of the socket, thereby fixing the plug in a manner that does not move relative to the plug insertion part along the second axis. When the plug is fixed to the plug insertion part, when the plug insertion part is moved along the second axis toward the second storage part by the moving mechanism, the first valve body of the plug contacts the second valve body of the socket. As a result, the fluid flows from the first piping on the plug side to the second piping on the socket side.

[0014] According to the fluid transfer connector involved in the first embodiment of the present invention, the second storage part of the socket is supported in a fixed state relative to the setting surface by the first support part. In addition, the load of the plug insertion part is supported at a predetermined position of the plug insertion part along the second axis by the second support part. Since the load of the plug insertion part into which the plug is inserted is supported by the second support part, compared with the case where the load of the plug is supported at a position where the plug is not inserted into the socket, the fluid can be stably supplied without bending or damage at the joint between the plug and the socket. In addition, since the plug insertion part and the second storage part of the socket are arranged on the same axis, the friction generated when the plug insertion part is moved in a direction close to or away from the second storage part by the moving mechanism is reduced, so that the open state in which the first valve body part is in contact with the second valve body part can be reliably maintained, and the fluid can be stably supplied from the plug to the socket.

[0015] Furthermore, according to the fluid transfer connector involved in the first aspect of the present invention, even if the plug insertion portion is moved along the second axis by the moving mechanism, the state in which the predetermined position of the plug insertion portion along the second axis is supported by the second support portion can be maintained. Therefore, even if the center of gravity of the plug insertion portion and the plug fixed in the plug insertion portion is moved by the moving mechanism, the state in which the load of the plug insertion portion is supported by the second support portion can be maintained, and the fluid can be stably supplied without bending or damage at the joint portion between the plug and the socket.

[0016] The fluid transfer connector according to a second aspect of the present invention is, in the first aspect, further configured such that the moving mechanism moves the plug insertion portion along the second axis toward or away from the second housing portion by pressure generated by compressed gas.

[0017] The fluid transfer connector involved in the second embodiment of the present invention can implement the operation of switching between an open state in which the first valve body part is in contact with the second valve body part and a closed state in which the first valve body part is not in contact with the second valve body part by pressure generated by compressed gas without the operator manually implementing it.

[0018] The fluid transfer connector according to the third aspect of the present invention is, in the first aspect or the second aspect, further configured as follows: the second support portion has a support shaft, the support shaft is fixed to the installation surface and is arranged along a third axis parallel to the second axis, and the plug insertion portion has an insertion hole into which the support shaft is inserted and which extends along the third axis.

[0019] According to the fluid transfer connector according to the third aspect of the present invention, the load of the plug insertion portion can be transmitted from the insertion hole of the plug insertion portion to the installation surface via the support shaft inserted into the insertion hole.

[0020] The fluid transfer connector according to a fourth aspect of the present invention is, in the third aspect, further configured as follows: That is, the second support portion has a plurality of the support shafts, and the plug insertion portion has a plurality of the insertion holes.

[0021] According to the fluid transfer connector involved in the fourth aspect of the present invention, the load of the plug insertion part can be transferred from the multiple insertion holes of the plug insertion part to the installation surface via the multiple support shafts inserted into the multiple insertion holes. In addition, compared with the case where a single support shaft is inserted into a single insertion hole, it is possible to achieve that no force in the direction of rotation of the plug insertion part around the support shaft acts, thereby reliably transferring the load of the plug insertion part to the installation surface.

[0022] Effects of the Invention

[0023] According to the present invention, it is possible to provide a fluid transfer connector that can stably supply a fluid without causing bending or damage at a connection portion between a plug and a socket. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a longitudinal sectional view showing a fluid transfer connector according to an embodiment of the present invention, and shows a closed state in which a pipe on the plug side and a pipe on the socket side are not communicated.

[0025] Figure 2 It is a longitudinal sectional view showing a fluid transfer connector according to an embodiment of the present invention, and shows an open state in which a pipe on the plug side communicates with a pipe on the socket side.

[0026] Figure 3 for Figure 1 A longitudinal section through the plug is shown.

[0027] Figure 4 for Figure 1 A longitudinal cross-sectional view of the socket is shown.

[0028] Figure 5 for Figure 1 The fluid transfer connector shown is a left side view with the locking mechanism in an unfixed state.

[0029] Figure 6 for Figure 1 The fluid transfer connector shown is a left side view with the locking mechanism in a fixed state.

[0030] Figure 7 for Figure 4 A cross-sectional view of the support body taken along the line AA is shown.

[0031] Figure 8 for Figure 4 A cross-sectional view taken along arrow BB of the bypass flange is shown. DETAILED DESCRIPTION

[0032] Hereinafter, one embodiment of a fluid transfer connector 1 according to the present invention will be described with reference to the drawings. Figure 1 1 is a longitudinal sectional view showing a fluid transfer connector 1 according to an embodiment of the present invention, and shows a closed state in which the pipe L1 on the plug 100 side and the pipe L2 on the socket 200 side are not communicated. Figure 2 1 is a longitudinal sectional view showing a fluid transfer connector 1 according to an embodiment of the present invention, and shows an open state in which the pipe L1 on the plug 100 side communicates with the pipe L2 on the socket 200 side. Figure 3 for, Figure 1 A longitudinal cross-sectional view of the plug 100 is shown. Figure 4 for, Figure 1 A longitudinal cross-sectional view of the socket 200 is shown.

[0033] like Figure 1 as well as Figure 2 As shown, a fluid transfer connector 1 according to one embodiment of the present invention includes, for example, a plug 100 mounted on the end of a pipe (first pipe) L1 through which a fluid flows, and a socket 200 into which the plug 100 is inserted and which is connected to the end of a pipe (second pipe) L2 through which the fluid flowing in from the pipe L1 flows out.

[0034] The plug 100 and the socket 200 are connected to each other, so that an incompressible fluid can flow in the fluid transfer connector 1. The incompressible fluid in this embodiment is, for example, a liquid such as pure water or a liquid medicine used in a semiconductor manufacturing device. The socket 200 is connected to a pipe L2 connected to a buffer tank installed in a building. The plug 100 is installed on the end of the pipe L1 such as a hose led out from a tanker truck. In addition, it is also possible to connect the plug 100 to the pipe L2 and connect the socket 200 to the pipe L1.

[0035] like Figures 1 to 3As shown, the plug 100 includes a first valve body 110, a first housing 120, a first main body 130, and a first spring 140. The first housing 120 is a member formed in a cylindrical shape to house the first valve body 110 so as to be movable along the axis X1 (first axis). The first main body 130 is a member formed in a cylindrical shape so as to extend along the axis X1, and the first housing 120 is mounted on one end, and the pipe L1 is mounted on the other end.

[0036] The first main body 130 guides the fluid flowing in from the pipe L1 to the first housing portion 120 housing the first valve body 110. One end of the first spring 140 is mounted on the end of the first main body 130 on the first housing portion 120 side. The other end of the first spring 140 is mounted on the first valve body 110. The first valve body 110 is pressed against the opening hole 120a of the first housing portion 120 by the force generated by the first spring 140. The first valve body 110 pressed against the opening hole 120a blocks the opening hole 120a, thereby closing the opening hole 120a so that the fluid does not flow.

[0037] like Figure 1 , Figure 2 as well as Figure 4 As shown, the socket 200 includes a second valve body 210, a second housing 220, a first support 230, a plug insertion portion 240, a moving mechanism 250, a second support 260, a bypass flange 270, and a second spring 280. The second housing 220 is a member formed in a cylindrical shape and housing the second valve body 210 so as to be movable along the axis X2 (second axis).

[0038] like Figure 4 As shown in the figure, one end of the second spring 280 is installed at the end of the second housing portion 220. The other end of the second spring 280 is installed on the second valve body 210. The second valve body 210 is pressed against the opening hole 220a of the second housing portion 220 by the force generated by the second spring 280. The second valve body 210 pressed against the opening hole 220a blocks the opening hole 220a, so that the opening hole 220a is closed and the fluid does not flow.

[0039] The first support portion 230 is a member that supports the second housing portion 220 in a fixed state relative to the installation surface S. The first support portion 230 is a member that is fixed to the installation surface S and is formed in a plate shape along the vertical direction VD. The first support portion 230 is formed with a through hole that surrounds the second housing portion 220 via the plug insertion portion 240 and the moving mechanism 250.

[0040] The plug insertion portion 240 is formed in a cylindrical shape so as to surround the second housing portion 220 and is a member into which the plug 100 is inserted. The plug insertion portion 240 includes a cylindrical body 241 , a support body 242 , a housing body 243 , a cover member 244 , and a locking mechanism 245 .

[0041] The cylinder 241 is a member formed into a cylindrical shape so as to extend along the axis X2. The cylinder 241 has an inner peripheral surface configured to surround the outer peripheral surface of the second storage portion 220. One end ( Figure 4 The left end portion in the middle is connected to the support body 242. In the cylinder 241, a through hole 241a extending along the axis X2 is formed.

[0042] The support body 242 is a member formed in a plate shape along the vertical direction VD and is supported by the second support portion 260. A through hole 242a extending along the axis X2 is formed in the support body 242. The storage body 243 is connected to the support body 242.

[0043] The storage body 243 is a member formed into a cylindrical shape in a manner extending along the axis X2. A through hole 243a extending along the axis X2 is formed in the storage body 243. A plate-shaped cover member 244 is mounted on the storage body 243. A through hole 244a extending along the axis X2 is formed in the cover member 244. The through hole 241a, the through hole 242a, the through hole 243a, and the through hole 244a form a through hole for the plug 100 to be inserted.

[0044] The locking mechanism 245 is a mechanism for fixing the plug 100 to the plug insertion portion 240 so as not to move along the axis X2. The plug 100 is fixed to the plug insertion portion 240 by the locking mechanism 245, and moves along the axis X2 together with the plug insertion portion 240 by the moving mechanism 250.

[0045] Figure 5 for, Figure 1 The illustrated fluid transfer connector 1 is a left side view showing the locking mechanism 245 in an unfixed state. Figure 6 for, Figure 1 The illustrated fluid transfer connector 1 is a left side view showing a locking mechanism 245 in a fixed state. The locking mechanism 245 includes a pair of lever members 245a and a pair of locking members 245b.

[0046] The locking mechanism 245 switches between a non-fixed state in which the locking member 245b does not protrude toward the fluid flow path 240a centered on the axis X2 and a fixed state in which the locking member 245b protrudes toward the fluid flow path 240a centered on the axis X2 by swinging the rod member 245a around the axis X4. Figure 5 as well as Figure 6 In the figure, the plug 100 is omitted. A pair of engagement grooves (not shown) with which the locking member 245b engages are formed on the outer peripheral surface of the plug 100.

[0047] The operator switches the locking mechanism 245 from the non-fixed state to the fixed state when the plug 100 is inserted into the socket 200, thereby setting the locking member 245b to the state of being engaged with the engagement groove of the plug 100. Thus, the plug 100 is fixed relative to the plug insertion portion 240 so as not to move along the axis X2.

[0048] The moving mechanism 250 is a mechanism for moving the plug insertion portion 240 along the axis X2 toward or away from the second housing portion 220, thereby switching between an open state in which the first valve body portion 110 is in contact with the second valve body portion 210 and a closed state in which the first valve body portion 110 is not in contact with the second valve body portion 210. The moving mechanism 250 includes an annular member 251, a cylinder 252, a first air intake and exhaust port 253, a second air intake and exhaust port 254, and a cover member 255.

[0049] A bearing component 252a formed of a resin material (e.g., a fluororesin material) is mounted on the inner circumferential surface of the cylinder 252. The bearing component 252a has an effect of reducing friction between the outer circumferential surface of the cylinder 241 and the inner circumferential surface of the cylinder 252. The cover component 255 is a component formed in an annular shape and mounted at the end of the cylinder 252 by tightening bolts (not shown) in a manner that the bearing component 252a is fixed to the inner circumferential surface of the cylinder 252.

[0050] The moving mechanism 250 supplies compressed air (compressed gas) to the first pressure chamber P1 from the first air inlet and outlet port 253 to make the pressure of the first pressure chamber P1 higher than the pressure of the second pressure chamber P2, and moves the plug insertion portion 240 along the first moving direction MV1 ( Figure 4 in the direction from the right to the left) to become Figure 1 Shown in closed state.

[0051] In addition, the moving mechanism 250 supplies compressed air (compressed gas) to the second pressure chamber P2 from the second air inlet and outlet port 254, thereby making the pressure of the second pressure chamber P2 higher than the pressure of the first pressure chamber P1, and moving the plug insertion portion 240 along the second moving direction MV2 ( Figure 4in the direction from the left to the right) to become Figure 2 Shown in open state.

[0052] The second support part 260 is a member that supports the load of the plug insertion part 240 so that the axis X1 and the axis X2 coincide with each other at a predetermined position Po along the axis X2 of the plug insertion part 240. The second support part 260 includes a pair of support shafts 261 and a fixing part 262 that fixes one end of the support shaft 261 to the installation surface S.

[0053] The support shaft 261 is a shaft-shaped member that is fixed to the installation surface S via the fixing portion 262 and the first support portion 230 and is arranged along a third axis (X3) parallel to the axis X2. Preferably, the support shaft 261 is formed of a metal material. One end of the support shaft 261 is fixed to the installation surface S via the fixing portion 262, and the other end of the support shaft 261 is fixed to the installation surface S via the first support portion 230.

[0054] Figure 7 for, Figure 4 The AA cross-sectional view of the support body 242 is shown. Figure 7 As shown in FIG. 2 , a pair of insertion holes 242 b are formed on the support body 242 for inserting a pair of support shafts 261. Figure 1 as well as Figure 2 As shown, the insertion hole 242b is a through hole formed so as to extend along the axis X3. In order to reduce the friction generated between the support shaft 261, it is preferable that the insertion hole 242b is formed of a resin material (for example, a fluororesin material).

[0055] Bypass flange 270 is used to Figure 2 The fluid flow path from the pipe L1 to the pipe L2 of the fluid transfer connector 1 in the open state shown is a member for supplying air (gas) for checking the airtightness of the fluid flow path. Figure 8 for, Figure 4 The BB cross-sectional view of the bypass flange 270 is shown. Figure 8 As shown, the bypass flange 270 includes a through hole 271 that forms a part of the fluid flow path from the pipe L1 to the pipe L2 and an introduction flow path 272 that guides air supplied from an external air supply source (not shown) to the through hole 271.

[0056] The bypass flange 270 is fixed in a state of being sandwiched between the flange F and the second housing portion 220 by fastening bolts B inserted into the flange F installed at the end of the pipe L2 into fastening holes (not shown) formed in the second housing portion 220 .

[0057] The operator passes Figure 2 The inlet flow passage 272 of the fluid transfer connector 1 in the open state shown in the figure supplies air, thereby supplying air to the fluid flow passage from the pipe L1 to the pipe L2 of the fluid transfer connector 1. Thus, the operator can confirm whether the air flowing into the fluid flow passage from the pipe L1 to the pipe L2 is in a state of flowing out to the outside of the fluid transfer connector 1 (a state in which airtightness is not ensured).

[0058] In addition, the operator can Figure 1 Air is supplied to the inlet flow passage 272 of the fluid transfer connector 1 in the closed state shown, thereby supplying air to the fluid flow passage inside the second valve body 210 of the socket 200. Thus, the operator can confirm whether the state in which the second valve body 210 of the socket 200 contacts the opening hole 220a of the second housing portion 220 and the pipe L1 and the pipe L2 are not connected is properly maintained.

[0059] The operations and effects achieved by the fluid transfer connector 1 according to the present embodiment described above will be described.

[0060] According to the fluid transfer connector 1 of the present embodiment, the operator inserts the plug 100 into the socket 200 and activates the locking mechanism 245 of the plug insertion portion 240 of the socket 200, thereby fixing the plug 100 so that it does not move along the axis X2 relative to the plug insertion portion 240. When the plug 100 is fixed in the plug insertion portion 240, the plug insertion portion 240 is moved along the axis X2 toward the second housing portion 220 by the moving mechanism 250, and the first valve body portion 110 of the plug 100 contacts the second valve body portion 210 of the socket 200. As a result, the fluid flows from the pipe L1 on the plug 100 side to the pipe L2 on the socket 200 side.

[0061] According to the fluid transfer connector 1 of the present embodiment, the second housing portion 220 of the socket 200 is supported by the first support portion 230 in a fixed state relative to the installation surface S. In addition, the load of the plug insertion portion 240 is supported by the second support portion 260 at a predetermined position Po of the plug insertion portion 240 along the axis X2. Since the load of the plug insertion portion 240 into which the plug 100 is inserted is supported by the second support portion 260, compared with a case where the load of the plug 100 is supported at a position where the plug 100 is not inserted into the socket 200, the fluid can be stably supplied without causing bending or damage at the joint portion between the plug 100 and the socket 200.

[0062] Furthermore, according to the fluid transfer connector 1 of the present embodiment, even if the plug insertion portion 240 is moved along the axis X2 by the moving mechanism 250, the state in which the predetermined position Po of the plug insertion portion 240 along the axis X2 is supported by the second support portion 260 can be maintained. Therefore, even if the center of gravity of the plug insertion portion 240 and the plug 100 fixed to the plug insertion portion 240 is moved by the moving mechanism 250, the state in which the load of the plug insertion portion 240 is supported by the second support portion 260 can be maintained, and the fluid can be stably supplied without causing bending or damage at the joint portion between the plug 100 and the receptacle 200.

[0063] According to the fluid transfer connector 1 of the present embodiment, the operation of switching between an open state in which the first valve body 110 is in contact with the second valve body 210 and a closed state in which the first valve body 110 is not in contact with the second valve body 210 can be performed by the pressure generated by the compressed gas without the operator having to perform the operation manually.

[0064] According to the fluid transfer connector 1 of the present embodiment, the load of the plug insertion portion 240 can be transferred from the pair of insertion holes 242b of the plug insertion portion 240 to the installation surface S via the pair of support shafts 261 inserted into the pair of insertion holes 242b. In addition, compared with the case where a single support shaft is inserted into a single insertion hole, no force in the direction of rotation of the plug insertion portion 240 around the support shaft 261 is applied, so that the load of the plug insertion portion 240 can be reliably transferred to the installation surface S.

[0065] Explanation of symbols

[0066] 1. Connectors for fluid transfer;

[0067] 100. Plug;

[0068] 110. a first valve body portion;

[0069] 120. a first storage portion;

[0070] 120a, opening hole;

[0071] 130. a first main body;

[0072] 140, first spring;

[0073] 200, socket;

[0074] 210, second valve body portion;

[0075] 220, second storage section;

[0076] 230, first supporting portion;

[0077] 240, plug insertion portion;

[0078] 240a, fluid flow channel;

[0079] 241, cylinder;

[0080] 241a, 242a, 243a, 244a, through holes;

[0081] 242, support body;

[0082] 242b, insertion hole;

[0083] 243, storage body;

[0084] 244, cover parts;

[0085] 245. Locking mechanism;

[0086] 245a, rod member;

[0087] 245b, locking member;

[0088] 250, mobile mechanism;

[0089] 251, annular parts;

[0090] 252, cylinder;

[0091] 253, first air intake and exhaust port;

[0092] 254, second air intake and exhaust port;

[0093] 260, second supporting portion;

[0094] 261, support shaft;

[0095] 262, fixed part;

[0096] 270, bypass flange;

[0097] 271, through hole;

[0098] 272, import flow channel;

[0099] 280, second spring;

[0100] L1, piping (first piping);

[0101] L2, piping (second piping);

[0102] MV1, first moving direction;

[0103] MV2, second moving direction;

[0104] P1, first pressure chamber;

[0105] P2, second pressure chamber;

[0106] Po, reserved position;

[0107] S, setting surface;

[0108] VD, vertical direction;

[0109] X1, X2, X3, X4, axis.

Claims

1. A fluid transfer connector, comprising: a plug mounted on an end of a first pipe through which a fluid flows; a socket into which the plug is inserted and which is connected to a second pipe for causing the fluid flowing in from the first pipe to flow out, The plug has: a first valve body portion; The first housing portion is cylindrical and houses the first valve body portion so as to be movable along a first axis. The socket has: a second valve body portion; a second housing portion, which is cylindrical and houses the second valve body portion in a manner that allows the second valve body to move along a second axis; a first support portion that supports the second storage portion in a fixed state relative to a setting surface; a plug insertion portion formed in a cylindrical shape so as to surround the second housing portion and into which the plug is inserted; a moving mechanism that moves the plug insertion portion along the second axis toward or away from the second housing portion, thereby switching between an open state in which the first valve body portion contacts the second valve body portion and a closed state in which the first valve body portion does not contact the second valve body portion; a second supporting portion that supports a load of the plug insertion portion at a predetermined position of the plug insertion portion along the second axis, The plug insertion portion includes a locking mechanism that fixes the plug so as not to move relative to the plug insertion portion along the second axis.

2. The fluid transfer connector according to claim 1, wherein: The moving mechanism moves the plug insertion portion along the second axis toward a direction approaching or away from the second housing portion by pressure generated by compressed gas.

3. The fluid transfer connector according to claim 1 or claim 2, wherein: The second support portion has a support shaft, the support shaft is fixed to the installation surface and is arranged along a third axis parallel to the second axis. The plug insertion portion has an insertion hole into which the support shaft is inserted and which extends along the third axis.

4. The fluid transfer connector according to claim 3, wherein: The second support portion has a plurality of support shafts. The plug insertion portion has a plurality of the insertion holes.

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