JP4596933B2 - Fluid coupling - Google Patents

Description

  This invention has a female side member having a female side flow path and a male side member having a male side flow path, and does not cause fluid leakage in both flow paths by combining both members. Fluid that is connected in a state so that, for example, a fluid stored in a member such as a tank provided with a male member can be sent to a mechanism that consumes this fluid provided in a female member. It relates to the improvement of the joint.

There is a fluid coupler comprising a first joint and a second joint provided with a ball-shaped closing member that is pressed against the valve seat by urging the valve seat. However, in such a coupler, when the first joint and the second joint are brought into contact with each other, the closing members of both the joints are brought into contact with each other and are opened backward against the bias. The flow path of the first joint and the flow path of the second joint are connected, but at the moment of such valve opening, the tip surface of the first joint and the tip surface of the second joint are not yet abutted. However, it cannot be used for the specification that allows fluid to flow at the same time as opening the valve.
JP 2003-4191 A

  The main problem to be solved by the present invention is that, in a fluid coupling comprising a female member having a female flow channel and a male member having a male flow channel, both flow channels are immediately obtained by combining both members. Can be used without any inconvenience for the specification that the fluid flows in the flow path at the same time as this connection, and even if the male member is shallowly inserted into the female member, The point is that both flow paths can be properly connected.

In order to solve the above problems, in the present invention, the fluid coupling has the following configurations (1) to (7).
(1) A female side member having a female side flow path and a receiving part, a male side member having a male side flow path and a receiving part of the female side member into the receiving part, and a seal member,
(2) For the male side member,
A valve seat formed in the insertion portion and in the male channel,
A valve device including a valve body that is constantly urged to a valve closing position that presses the valve head against the valve seat;
(3) In the female side member,
A valve seat in the female channel,
A valve device including a valve body that is constantly urged to a valve closing position that presses the valve head against the valve seat;
(4) One of the valve device of the male side member and the valve device of the female side member is movable in the insertion direction of the insertion portion of the male side member, and is always urged to the advance position. Is provided on the movable body held by the
(5) The biasing force on the movable body is larger than the biasing force on the valve body constituting the valve device,
(6) The seal member is provided to seal between the outer surface of the insertion portion of the male side member and the inner surface of the reception portion of the female side member with the insertion of the insertion portion into the reception portion,
(7) By inserting the insertion portion of the male side member into the receiving portion of the female side member to a predetermined position, the valve body of the female side member abuts on the valve body of the male side member, and both valve bodies are moved to the valve open position. At the same time, the retractable portion can be retracted to the maximum insertion position beyond the predetermined position while the movable body is retracted.

  According to such a configuration, in a state where the female side member and the male side member are separated, both the valve body constituting the valve device of the female side member and the valve body constituting the valve device of the male side member are closed. The fluid is not leaked to the outside through the female channel and the male channel.

  When the insertion part of the male side member is inserted into the receiving part of the female side member, first, the seal member provided in the insertion part is inserted between the outer surface of the insertion part of the male side member and the inner surface of the reception part of the female side member. A state is created where no fluid leaks out. Next, when the insertion portion of the male side member is inserted to a predetermined position, the valve body constituting the valve device of the female side member and the valve body constituting the valve device of the male side member both resist the biasing. Moved to the open position. As a result, the female channel and the male channel are connected to each other.

 Further, when the male side member insertion portion is inserted into the receiving portion of the female side member beyond the predetermined position to the maximum insertion position, the valve body of the valve device of the female side member and the valve body of the valve device of the male side member In a state where both are positioned at the valve opening position, the movable body is moved to the retracted position. That is, in such a fluid coupling, when the insertion does not reach the maximum insertion position, that is, even when the insertion is shallow to the predetermined position, the female-side flow path and the male-side flow path are appropriately connected. Can be matched.

  Either one of the male side member and the female side member is used as a main part provided with a flow path, and the flow path of this valve constituent part is flowed to the main part. In some cases, it is configured to be detachably combined so as to communicate with the road.

  In such a case, when the male side member is provided in a member such as a tank or a cartridge that stores the fluid, if the member needs to be filled with fluid, the valve provided with the valve device The component part can be removed from the main part, and fluid can be smoothly filled using the opening of the main part opened by the removal.

  The male side member may be connected to the fuel cartridge side constituting the fuel cell of the portable electronic device, and the female side member may be connected to the main body side of the portable electronic device.

  In this case, when the fuel cartridge is not loaded into the main body of the device, the fuel in the fuel cartridge can be flowed into the main body side by one touch without leaking the fuel. Even when the fuel cartridge is shallow, that is, even when the male side member is inserted into the receiving portion of the female side member only up to a predetermined position, the fuel of the fuel cartridge is properly applied to the main body side. Can be allowed to flow in.

  In some cases, at least a portion constituting the flow path in the male side member and the female side member is made of a synthetic resin having methanol resistance.

  In this case, a fluid coupling for connecting a methanol flow path generally used as a fuel in a device that operates using a fuel cell such as a portable electronic device can be used without any trouble.

  According to the fluid coupling of the present invention, both the flow paths are immediately connected to each other by combining the female side member having the female side flow path and the male side member having the male side flow path. Even when the fluid flows in the flow path at the same time as the connection, the sealing member seals between the insertion portion of the male side member and the reception portion of the female side member prior to the connection so that the fluid leaks out. There is no. Moreover, even when the male member is shallowly inserted into the female member, both the flow paths can be appropriately connected by the movable body that is positioned at the forward movement position by urging.

  The best mode for carrying out the present invention will be described below with reference to FIGS.

  Here, FIG. 1 shows a state where the male side member 2 and the female side member 1 constituting the fluid coupling are separated, and FIG. 2 shows that the insertion portion 21 of the male side member 2 is the receiving portion of the female side member 1. 3 shows the basic connection state in which the insertion portion 21 is inserted into the receiving portion 11 to the maximum insertion position, and FIG. 4 shows the case where the insertion is slightly shallower than FIG. Show. 1 and 2, the valve bodies 121 and 221 of the valve devices 12 and 22 of the male side member 2 and the female side member 1 are in the valve closing position, and in FIGS. 3 and 4, they are in the valve opening position. Further, in FIGS. 1, 2 and 4, the movable body 13 is in the forward position, and in FIG. 3, it is in the backward position. 5 shows a state in which the valve component part 23 is removed from the main part 24 of the male member 2, and FIGS. 6 and 7 show the parts 23 and 24 separately. (In both figures, the valve component part 23 represents only the inner cylinder 235 constituting this for convenience.)

  The fluid coupling according to this embodiment has a female side member 1 having a female side flow channel 10 and a male side member 2 having a male side flow channel 20, and both the members 1 and 2 are combined. As a result, the flow paths 10 and 20 are connected together in a state that does not cause fluid leakage, and for example, the fluid stored in the member C such as a tank provided with the male side member 2 is supplied to the female side member 1. The fluid can be fed into the member H having a mechanism for consuming the fluid, and the male member 2 is extracted from the female member 1 when the fluid is consumed. The member C such as the tank can be removed from the member H provided with the mechanism or the like without any trouble for replacement without causing leakage of the fluid remaining in both the flow paths 10 and 20.

  Such a fluid coupling includes a female member 1, a male member 2, and a seal member 3. In the illustrated example, the main parts of the female member 1 and the male member 2 are made of synthetic resin.

(Male side member 2)
The male side member 2 includes a male side flow path 20 and an insertion portion 21 into the receiving portion 11 described later of the female side member 1.

  In addition, the male member 2 includes a valve seat 220 that is formed in the insertion portion 21 and is in the male flow passage 20, and a valve body that is constantly urged to a valve closing position that presses the valve head 222 against the valve seat 220. The valve device 22 provided with 221 is provided.

  In this embodiment, the male side member 2 has a valve component part 23 having a male side flow path 20 and a built-in valve device 22 as a main part 24 having the male side flow path 20. The male side flow path 20 of the valve component part 23 is configured to be detachably combined so as to communicate with the male side flow path 20 of the main part 24.

  In the example shown in the drawing, the valve component 23 includes an outer cylinder 230 and an inner cylinder 235 in which both ends of the cylinder are opened.

  The outer cylindrical body 230 has a first circumferential step surface 231 directed toward the upper end of the cylinder inside the lower end of the cylinder, and the first circumferential step surface 231 serves as the valve seat 220. Further, the outer cylindrical body 230 is configured so that the upper cylindrical portion 230 is thicker than the lower portion from a position approximately in the middle in the vertical direction, and the second circular step surface is directed to the upper end of the cylindrical portion inside the position. 232. Further, the outer cylinder 230 has a flange 233 protruding outward at the upper end of the cylinder.

  On the other hand, the inner cylinder 235 includes a support cylinder 236 for the valve element 221 at the lower end of the cylinder. The support cylinder 236 is provided between the inner wall of the inner cylinder 235 and the outer wall of the support cylinder 236 so that the male flow path 20 is formed between the inner wall of the inner cylinder 235 and the outer wall of the support cylinder 236. It is positioned in the inner cylindrical body 235 by the connecting piece 237 that extends.

  Further, the valve body 221 is configured such that a valve head 222 is provided at the lower end of the leg shaft 223 inserted into the support cylinder 236 so as to be movable up and down.

  In the example shown in the figure, a compression coil spring 224 is provided between the valve head 222 of the valve body 221 and the lower end of the inner cylinder 235 so that the leg shaft 223 of the valve body 221 and the support cylinder 236 are accommodated inside. In a state of being interposed, the outer cylindrical body 230 and the inner cylindrical body 235 are placed so that the valve body 221 is placed in the space between the second circumferential step surface 232 of the outer cylindrical body 230 and the valve seat 220. Combined. That is, in the example shown in the figure, the inner flange 238 formed on the lower end side of the inner cylinder 235 is positioned from the upper end side of the outer cylinder 230 to the position where the circumferential flange 238 abuts against the second circumferential step surface 232. The inner cylindrical body 235 can be inserted into the inner cylinder 235, and in this inserted state, the circumferential flange 238 and the second circumferential step surface 232 are welded together to form the valve component part 23. Yes.

  The valve body 221 is configured such that a seal ring 225 fitted in a circumferential groove formed in the valve head 222 is pressed against the valve seat 220 from above by the action of the compression coil spring 224. In this state, the valve body 221 is closed. The valve is in the position. (FIG. 1) When the valve head 222 of the valve body 221 is pushed upward by a protruding portion 124 of the valve body 121 of the female side member 1 described later, which enters the outer cylinder 230 from the cylinder lower end of the outer cylinder 230. The valve body 221 is moved upward to the valve opening position against the bias of the spring 224. (Fig. 3, Fig. 4)

  On the other hand, in the illustrated example, the main part 24 is configured to have a bent tubular shape including a vertical portion 240 and a horizontal portion 243. The vertical portion 240 is formed with a flange 241 protruding outward. The cylinder upper end side of the inner cylinder 235 of the valve component part 23 enters the inside of the position below the formation part of the flange 241 of the vertical part 240, and this lower part is the inner side of the cylinder upper end side of the outer cylinder 230. It comes to fit in. That is, in the illustrated example, the vertical part 240 of the main part 24 is inserted into the outer cylindrical body 230 from the upper end side of the outer cylindrical body 230 of the valve constituent part 23, thereby causing the male side flow of the valve constituent part 23. The path 20 and the male side flow path 20 of the main part 24 are communicated with each other.

  In the illustrated example, window holes 242 are formed on both sides in the diametrical direction at locations below the flange 241 in the vertical portion 240 of the main part 24. In addition, hooking claws 239 are formed on both sides in the diameter direction of the valve component part 23 at positions above the circumferential flange 238 of the inner cylinder 235. And in the example of illustration, the main part 24 side is mainly elastically deformed by inserting the vertical part 240 of the main part 24 into the outer cylinder 230 of the valve component part 23 as described above. After that, the elastic claw 239 is engaged with the window hole 242 by elastic return at the position where the engaging claw 239 enters the window hole 242, so that the combined state of the main part 24 and the valve component part 23 is maintained. It has become. In addition, after this combination, a non-rotating protrusion (not shown) formed on the upper surface of the flange 233 of the outer cylindrical body 230 of the valve component part 23 that has entered the notch 244 formed in the flange 241 of the main part 24 by this combination. When the valve component part 23 is rotated or relatively rotated with respect to the main part 24, the main part 24 side is mainly inclined by the inclination of the inclined surface 239a formed on the side of the hooking claw 239. The latching claw 239 is extracted from the window hole 242 by elastically deforming and the combined state of the main part 24 and the valve component part 23 can be solved.

  Further, in the illustrated example, the male side member 2 includes the flange 233 of the outer cylindrical body 230 of the valve component part 23 and the main part between the two panels Cp and Cp constituting the member C to which the male side member 2 is attached. It is attached to such a member C so as to be sandwiched between 24 flanges 241.

  Thereby, in this embodiment, when the male member 2 is provided in the member C such as a tank or a cartridge that stores the fluid, the member C needs to be refilled with the fluid. In some cases, the valve component part 23 including the valve device 22 can be removed from the main part 24, and the fluid can be smoothly refilled using the opening of the main part 24 opened by the removal. After such filling, the desired state can be easily created by attaching the new valve component part 23 to the main part 24 again. (FIGS. 5 to 7)

  In the illustrated example, the socket 25 is fitted to the horizontal portion 243 of the main part 24 so that the horizontal portion 243 is further accommodated inside, and the fluid transfer pipe T is inserted. A cover 26 that covers the outside of the transfer pipe T is fastened to the base of the socket 25 that is inserted.

(Female side member 1)
The female side member 1 includes a female side flow path 10 and a receiving portion 11.

  In addition, the female member 1 includes a valve seat 120 in the female flow path 10 and a valve device 121 that is constantly urged to a valve closing position that presses the valve head 122 against the valve seat 120. 12 is provided.

  In this embodiment, the valve device 12 of the female side member 1 can move in the insertion direction of the insertion portion 21 of the male side member 2 and is always urged to the advance position. The movable body 13 is provided in the support body 14.

  In this embodiment, the support body 14 is configured to have a cylindrical shape with both ends of the cylinder open. A flange 140 protruding outward is formed at the upper end of the cylinder of the support 14, and the female side member 1 has this flange 140 at the opening edge of the opening Ha formed in the member H to which the female side member 1 is attached. The member H is provided so as to be hooked.

  On the bottom end of the cylinder of the support 14, a rotating rod 141 that protrudes inward is formed. Further, the inner diameter of the support 14 is larger from the middle to the upper part, and a circumferential step surface 142 facing upward is formed in the middle. In addition, a short sleeve 143 is fitted to the upper end of the cylinder of the support 14, and the upper end of the cylinder of the movable body 13 abuts against the inner collar 144 formed at the upper end of the sleeve 143 by urging. Thus, the abutted position is the forward movement position of the movable body 13.

  On the other hand, the movable body 13 includes a long cylindrical body 130 with both ends of the cylinder open, and a short cylindrical body 134 combined with the lower end of the long cylindrical body 130. The insides of both the cylinders 130 and 134 become the female-side flow path 10.

  The long cylindrical body 130 has a circumferential step surface 131 that is inclined downward toward the lower end of the tube and closer inward as it goes upward, and the circumferential step surface 131 serves as the valve seat 120. It is supposed to function. Further, a flange 132 projecting outward is formed at the upper end of the cylinder of the long cylinder 130, and the long cylinder body 130 is long on the inner side of the spring between the circumferential step surface 141 of the support 14 and the flange 132 of the long cylinder 130. The movable body 13 is positioned at the forward movement position by the compression coil spring 15 interposed so as to accommodate the cylindrical body 130.

  On the other hand, the short cylindrical body 134 has an outer diameter that fits between the rotating rod 141 and the circular step surface 142 of the support 14 in a substantially dense manner, and has a circular rising portion 135 on the upper end surface of the cylinder. In addition, a circumferential protrusion 133 formed so as to surround the valve seat 120 at the lower end of the long cylindrical body 130 and protruding downward is welded to the circumferential protrusion 133 so as to be fitted inside the circumferential rising portion 135. The long cylindrical body 130 is assembled. The short cylinder 134 includes a support cylinder 136 for the valve element 121 therein. The support cylinder 136 is formed between the inner wall of the short cylinder 134 and the outer wall of the support cylinder 136 so that the female channel 10 is formed between the inner wall of the short cylinder 134 and the outer wall of the support cylinder 136. It is positioned in the short cylinder 134 by the connecting piece 137 extending over the distance.

  Further, the valve body 121 is configured such that a valve head 122 is provided at the lower end of a leg shaft 123 that is inserted into the support cylinder 136 so as to be movable up and down.

  In the illustrated example, the compression coil spring 125 is configured such that the leg shaft 123 of the valve body 121 and the support cylinder 136 are accommodated between the valve head 122 of the valve body 121 and the connecting piece 137 of the short cylindrical body 134. The valve body 121 is housed between the long cylinder body 130 and the short cylinder body 134 in a state where the long cylinder body 130 and the short cylinder body 134 are assembled.

  The valve body 121 presses a seal ring 126 fitted in a circumferential groove formed on the valve head 122 against the valve seat 120 formed on the long cylindrical body 130 from below by the action of the compression coil spring 125. This state is a state in which the valve body 121 is in the valve closing position. The valve body 121 of the female-side member 1 has a protruding portion 124 that protrudes upward through the female-side flow path 10 at the center of the valve seat 120 in the valve-closed position, and this protruding portion 124 is the male-side member 2. When the insertion portion 21 of the male side member 2 is inserted into the receiving portion 11 of the female side member 1 from the position in contact with the valve head 222 of the valve body 221, the protruding portion 124 of the valve body 121 of the female side member 1. As a result, the valve body 221 of the male side member 2 is pushed and the valve body 121 of the female side member 1 is pushed in the opposite direction, and both the valve bodies 121 and 221 are biased by the springs 125 and 224. The valve is moved to the valve open position. That is, the biasing force of the valve body 121 constituting the valve device 12 of the female side member 1 and the biasing force of the valve body 221 constituting the valve device 22 of the male side member 2 are opposite to each other, but the forces are substantially equal. ing.

  The urging force for the movable body 13 is set to be larger than the urging forces for the valve bodies 121 and 221 constituting the valve devices 12 and 22.

  Then, by inserting the insertion portion 21 of the male side member 2 into the receiving portion 11 of the female side member 1 to a predetermined position, the valve body 121 of the female side member 1 abuts against the valve body 221 of the male side member 2, and both valves Both the bodies 121 and 221 are moved to the valve opening position (FIG. 4). When the insertion portion 21 is inserted to the maximum insertion position beyond the predetermined position, the movable body 13 is moved to the retracted position. Yes. (FIG. 3) That is, in this embodiment, the valve in which the cylinder lower end of the valve component part 23 of the male member 2 is located at the cylinder lower end of the long cylinder 130 of the female member 1 by insertion into the predetermined position. It strikes against an upwardly facing surface surrounding the seat 120. At this predetermined position, the movable body 13 is positioned at the forward movement position by the urging force. When further insertion is performed from there, the movable body 13 is moved to the retracted position against the bias.

(Seal member 3)
The seal member 3 is provided so as to seal between the outer surface of the insertion portion 21 of the male side member 2 and the inner surface of the reception portion 11 of the female side member 1 as the insertion portion 21 is inserted into the reception portion 11. Yes.

  In the illustrated example, the seal member 3 is formed on the outer surface portion of the lower end of the outer cylinder 230 in the valve component part 23 of the male member 2, and is a circumferential groove oriented around the cylinder axis of the outer cylinder 230. It is constituted by a seal ring 30 fitted in 234.

(function)
In a state where the female side member 1 and the male side member 2 are separated, both the valve body 121 constituting the valve device 12 of the female side member 1 and the valve body 221 constituting the valve device 22 of the male side member 2 are both The fluid is not leaked to the outside through the female side channel 10 and the male side channel 20 because it is positioned at the valve closing position. (Fig. 1)

  When the insertion portion 21 of the male side member 2 is inserted into the receiving portion 11 of the female side member 1, first, the outer surface of the insertion portion 21 of the male side member 2 and the female side member 1 are sealed by the seal member 3 provided in the insertion portion 21. A state in which no fluid leaks from the inner surface of the receiving portion 11 is created. (FIG. 2) Next, when the insertion portion 21 of the male member 2 is inserted to a predetermined position, the valve body 121 constituting the valve device 12 of the female member 1 and the valve device 22 of the male member 2 are constituted. Both of the valve bodies 221 to be moved are moved to the valve opening position against the biasing. As a result, the female channel 10 and the male channel 20 are connected to each other. (Fig. 4)

  When the male side member 2 is provided in a member C such as a tank in which a fluid is stored, and the female side member 1 is provided in a member H having a mechanism for consuming this fluid, the fluid is transferred. Through the pipe T, the socket 25, the main part 24, the inner cylindrical body 235 of the valve component part 23, the outer cylindrical body 230, and the valve seat 220 of the male side member 2 flow into the female side flow path 10 of the female side member 1. It is fed into the mechanism through the valve seat 120 of the side member 1 and the short cylinder 134 of the movable body 13.

 When the insertion portion 21 of the male side member 2 is inserted into the receiving portion 11 of the female side member 1 up to the maximum insertion position beyond the predetermined position, the valve body 121 of the valve device 12 of the female side member 1 and the male side With the valve body 221 of the valve device 22 of the member 2 positioned at the valve open position, the movable body 13 is moved to the retracted position. (FIG. 3) That is, in such a fluid coupling, even when the insertion does not reach the maximum insertion position, that is, even when the insertion is shallow to the predetermined position, the female-side flow channel 10 and the male side are appropriately The flow path 20 can be connected together.

  The male side member 2 is connected to the fuel cartridge (the fuel cell fuel is stored) constituting the fuel cell of a portable electronic device such as a notebook personal computer, and the female side member 1 is portable. If it is connected to the main body side of the electronic device, when the fuel cartridge is not loaded into the main body, the fuel in the fuel cartridge can be flowed into the main body side with one touch without leaking such fuel. Even when this loading is shallow, that is, even when this loading is performed in a state where the insertion portion 21 of the male member 2 is only inserted into the receiving portion 11 of the female member 1 to a predetermined position, the fuel cartridge The fuel can be appropriately flown into the main body side.

  In addition, if at least a portion constituting the flow path in the male side member 2 and the female side member 1 is made of a synthetic resin having methanol resistance, at least a part of the fluid coupling is made of a synthetic resin. In addition, a fluid coupling for connecting a methanol flow path generally used as a fuel in a device that operates using a fuel cell such as a portable electronic device can be used without any trouble. As such a synthetic resin, for example, polyacetal can be used.

  In the drawing, reference numeral 4 denotes a seal ring.

The sectional side view which showed the state which isolate | separated the male side member 2 and the female side member 1 Side sectional view showing a state in which the insertion portion 21 of the male member 2 has started to be inserted into the receiving portion 11 of the female member 1 Side sectional view showing a basic connection state in which the insertion portion 21 of the male side member 2 is inserted into the receiving portion 11 of the female side member 1 to the maximum insertion position. Side sectional view showing a case where the insertion of the insertion portion 21 of the male side member 2 is slightly shallower than FIG. Side sectional view showing a state in which the valve component part 23 is removed from the main part 24 of the male side member 2 Side view (valve component part 23 represents only inner cylinder 235) Same side view (viewed from the right side of FIG. 6)

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Female side member 10 Female side flow path 11 Receiving part 12 Valve apparatus 120 Valve seat 121 Valve body 122 Valve head 13 Movable body 14 Support body 2 Male side member 20 Male side flow path 21 Insertion part 22 Valve apparatus 220 Valve seat 221 Valve Body 222 Valve head 3 Seal member

Claims (3)

A female side member having a female side flow path and a receiving part, a male side member having a male side flow path and a receiving part for receiving the female side member, and a seal member,
For the male side member,
A valve seat formed in the insertion portion and in the male channel,
A valve device including a valve body that is constantly urged to a valve closing position that presses the valve head against the valve seat;
The female member
A valve seat in the female channel,
A valve device including a valve body that is constantly urged to a valve closing position that presses the valve head against the valve seat;
Either the male-side member valve device or the female-side member valve device is movable in the insertion direction of the male-side member insertion portion, and is held in the support body in a state of being constantly urged to the advance position. Is provided on the movable body,
The urging force for the movable body is set to be larger than the urging force for the valve body constituting the valve device,
The seal member is provided so as to seal between the outer surface of the insertion portion of the male side member and the inner surface of the reception portion of the female side member with the insertion of the insertion portion into the reception portion,
By inserting the insertion part of the male side member into the receiving part of the female side member to a predetermined position, the valve body of the female side member hits the valve body of the male side member and both valve bodies are moved to the valve open position, It is possible to insert the insertion part to the maximum insertion position beyond this predetermined position while moving the movable body backward ,
Moreover, either one of the male side member and the female side member has a valve component part with a flow path inside and a valve device built therein as a main part provided with a flow path. A fluid coupling characterized in that it is configured to be detachably combined so as to communicate with a flow path .   2. The fluid coupling according to claim 1, wherein the male side member is connected to a fuel cartridge constituting a fuel cell of the portable electronic device, and the female side member is connected to the main body side of the portable electronic device. .   The fluid coupling according to claim 1 or 2, wherein at least a portion of the male side member and the female side member constituting the flow path is made of a synthetic resin having methanol resistance.

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