JP2012237416A - Connecting mechanism of liquid vessel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a connecting mechanism for a liquid vessel which is favorable in operability and rich in durability, and reducible in size.SOLUTION: In the connecting mechanism of the liquid vessel in which passages 11, 11' communicating with cylindrical parts are formed in housings 2, 2' having the connecting cylindrical parts at their tip sides, and piston valves 5, 5 for opening and closing the passages are arranged, cylinders 3, 3' for accommodating rear ends of the piston valves are arranged, elastic bodies 4 are accommodated in the cylinders, isolation seal materials 6, 6' for sealing portions in which the elastic bodies are accommodated in liquid-tight states are arranged at ends of the cylinders, the isolation seal materials are constituted so as to be warped accompanied by the movement of the piston valves, and tip-side seal materials 8 for opening and closing the passages accompanied by the fore-and-aft movement of the piston valves are arranged between the isolation seal materials and the cylindrical parts.

Description

  The present invention relates to a connection mechanism of a liquid container that allows a flow path between a supply side and a reception side to communicate, and in particular, a cartridge container filled with methanol, which is a supplementary fuel for a methanol fuel cell, and a methanol fuel cell main body. The present invention relates to a connection mechanism provided therebetween.

  A methanol fuel cell that obtains electric charge by converting methanol into carbon dioxide and water is configured to store a predetermined amount of methanol, which is a fuel, which consumes fuel as power is generated and its remaining amount decreases. In this case, the cartridge container filled with methanol is connected to the methanol fuel cell body to replenish methanol. Many connection mechanisms such as a coupler provided between the cartridge container for replenishment and the methanol fuel cell main body have been conventionally proposed.

  As an example, Patent Document 1 discloses a coupler configured to apply a closing force to a valve body that closes a flow path by a metal coil spring, and the metal coil spring touches methanol, In order to prevent the metal ions from eluting into the methanol and reducing the power generation efficiency due to this, the metal coil spring is isolated from the methanol by housing the metal coil spring in the elastic holder, and the metal coil A coupler is disclosed in which the spring is not in contact with methanol.

JP 2006-177492 A

  The durability associated with insertion / removal in the connection mechanism between the cartridge container filled with methanol and the methanol fuel cell main body is required to be, for example, 1,000 times or more on the methanol fuel cell main body side. On the other hand, the structure disclosed in Patent Document 1 has a liquid-tight structure in which a valve body is fitted into an elastic body holder with a built-in metal coil spring and the two are slid together. If it is inserted and removed over and over, at least one of the inner surface of the elastic body holder and the outer surface of the valve body that are in contact with each other will be worn away and liquid tightness will not be maintained, and the required durability will not be achieved. there is a possibility.

  Furthermore, the repulsive force (elastic force) of the metal coil spring is applied to the valve body in order to give the valve body a closing force that overcomes the frictional force caused by the contact between the inner surface of the elastic body holder and the outer surface of the valve body. ) In other words, the valve closing elastic force that acts on the valve body must be made strong, and accordingly, a large force is required to insert and remove the cartridge container, and a small one that is easy to insert and remove the connection mechanism. It may not be possible.

The present invention has been made in view of the above-described technical problems, and an object thereof is excellent in durability, also obtain the connection mechanism of the liquid container capable of insertion and removal easy miniaturization.

  In the present invention, a flow path communicating with the cylindrical portion is provided inside a housing provided with a cylindrical portion for connection on the distal end side, and the flow path is advanced by being advanced toward the cylindrical portion side. In the connecting mechanism of the liquid container provided with the piston valve that opens the flow path by closing and retreating, a cylinder part that accommodates the rear end part of the piston valve is provided inside the housing, and the cylinder part An elastic body that presses the piston valve toward the cylindrical portion side is housed inside, and an isolation sealing material that seals a place where the elastic body is housed in a liquid-tight state is disposed at the end of the cylinder portion In addition, the sealing material for isolation is in close contact with the outer peripheral surface of the piston valve in a liquid-tight state and is bent while maintaining the close-contact state as the piston valve moves. Further, between the sealing material for isolation and the tubular portion, the flow passage is closed in close contact with the outer peripheral surface of the piston valve that is advanced toward the tubular portion side, and A tip-side sealing material is provided that opens the flow path away from the outer peripheral surface of the piston valve when the piston valve is retracted.

  In the present invention, in addition to the above-described configuration, the outer peripheral surface of the piston valve to which the distal end side sealing material is in close contact is a conical tapered surface that is reduced in diameter toward the distal end where the cylindrical portion is formed. The tip-side sealing material is formed of a conical inner cylinder portion whose inner peripheral surface is in close contact with the tapered surface, a cylindrical portion that is fixed in close contact with the inner peripheral surface of the housing, and A connection mechanism for a liquid container can be provided, which includes a ring-shaped bottom portion connecting the inner cylinder portion and the cylindrical portion.

  Further, in the present invention, in addition to the above-described configuration, the isolation sealing material is formed in a ring shape, and the outer diameter of the portion where the isolation sealing material in the piston valve is closely fitted is fitted. The outer diameter of the portion adjacent to the portion in the axial direction is smaller than the outer diameter of the portion, and the inner peripheral edge of the isolation sealing material is bent in the axial direction in accordance with the movement of the piston valve in the axial direction. It can be set as the connection mechanism of the liquid container characterized by having.

  Furthermore, in the present invention, in addition to the above-described configuration, the ring-shaped bottom portion of the distal end side sealing material is formed thinner than the cylindrical portion and the inner cylindrical portion, and the connection of the liquid container is characterized in that It can be a mechanism.

  In addition to any one of the above-described configurations, the present invention includes a supply-side housing and a receiving-side housing, and the insertion guide convex piece is provided on the tip end surface of one housing, and the other A recess recessed in the same shape as the insertion guide convex piece is provided on the front end surface of the housing, and a retaining recess and a convex part can be fitted into the insertion guide convex piece and the recess, respectively. It is possible to provide a connection mechanism for a liquid container, which is provided in

  Since the connecting mechanism of the present invention uses an isolation seal material that is elastically deformed and a front-end side seal material that contacts and seals with the piston valve, rather than a sealing structure by sliding, there is no wear due to sliding. Therefore, it is excellent in durability, and since there is no increase factor of the operating force due to sliding resistance, it can be easily inserted and removed for connection and can be reduced in size.

  In addition, methanol has the property of penetrating and swelling with elastic materials such as various rubbers and thermoplastic elastomers, but when methanol touches the tip side sealing material and the tip side sealing material expands, the present invention Since the ring-shaped bottom portion of the sealing material on the distal end side is formed thinner than the cylindrical portion and the inner cylindrical portion, the ring-shaped bottom portion is deformed so as to protrude toward the distal end side (seat And the generation of a force that pushes down the piston valve to hinder sealing can be prevented.

  Furthermore, in the connection mechanism of the present invention, an insertion guide convex piece is provided on the distal end face of one housing, and a recess recessed in the same shape as the insertion guide convex piece is provided on the distal end face of the other housing. Since the insertion-use guide convex piece and the recess are provided with the recess-preventing concave portion and the convex portion, respectively, the non-standard liquid container can be prevented from being connected.

It is the upper end top view (a) which showed the connection mechanism of the supply side of this invention, and the longitudinal cross-sectional view (b) which looked at the AB line | wire cross section of this upper end top view (a) in the direction of the arrow. It is the upper end top view (a) which showed the connection mechanism of the receiving side of this invention, and the longitudinal cross-sectional view (b) which looked at the CD line cross section of this upper end top view (a) in the direction of the arrow. It is the longitudinal cross-sectional view which showed the state which connected the housings in the connection mechanism of this invention shown in FIG. 1 and FIG. It is the fragmentary sectional view which showed the state which the front end side sealing material in the connection mechanism of this invention expanded.

  The connection mechanism of the present invention can be applied to both the supply side and the reception side, and the basic configuration can be made common. First, the connection mechanism 1 on the supply side will be described with reference to the drawings.

  FIG. 1A is a top plan view showing a connection mechanism 1 on the supply side according to the present invention, and FIG. 1B is a cross-sectional view taken along line AB of the top plan view in the direction of the arrow. It is a longitudinal cross-sectional view, and the connection mechanism 1 on the supply side according to the present invention is provided at the mouth of a cartridge container 9 filled with methanol. A hollow housing 2 corresponding to the nozzle protruding from the cartridge 9 is provided. The housing 2 includes a cylindrical body portion 20, a shoulder portion 21 formed on the distal end side of the body portion 20 and connected horizontally to the body portion 20, and a mouth and neck portion 22 rising vertically from the shoulder portion 21. And. The mouth / neck portion 22 corresponds to a cylindrical portion of the present invention, and the ring pankin 12 is fitted on the outer surface of the mouth / neck portion 22.

  An insertion guide protrusion having a size set for each standard is provided on the front end surface of the housing 2 in order to prevent the non-standard cartridge container 9 from being inserted into the receiving-side connection mechanism 1 ′ described later. A piece 23 is provided. This insertion guide convex piece 23 has a one-to-one relationship with the counterpart part into which it is inserted, and serves as a so-called key (key). In the example shown in FIG. It is formed as a plate-like part. Further, a retaining recess 24 is formed on the outer edge side of the insertion guide convex piece 23 in a state where the recess 24 is recessed in a circular arc shape. In addition, four flow paths 11 reaching the inside of the housing 2 are formed inside the mouth neck portion 22 of the housing 2 between the four guide protrusions 23 for insertion.

  On the other hand, a bottomed cylinder 3 is provided on the cartridge container 9 side inside the housing 2 via a packing 13. The cylinder 3 forms a cylinder portion in the present invention, and the portion facing the distal end side of the housing 2 provided with the insertion guide convex piece 23 and the flow path 11 is opened. The opposite side is a closed shape, the hollow portion inside has a small diameter on the bottom side, and the portion connected to the small diameter portion via the step portion 30 has a large diameter. Is provided with an elastic body 4 made of a metal coil spring or the like.

  This elastic body 4 is for pressing the piston valve 5 in the valve closing direction (the mouth neck portion 22 side), and the piston valve 5 is located on the rear end side (in FIG. A cylindrical portion 50 is provided on the lower side, and the cylindrical portion 50 is inserted into the elastic body 4. In addition, a disc portion 51 having a flange-like (flange-like) diameter is formed on the tip side of the cylindrical portion 50, and the elastic body 4 is abutted against the disc portion 51. . That is, the elastic body 4 is disposed between the step portion 30 and the disc portion 51 so as to be compressed, and as a result, the elastic force by the elastic body 4 acts to urge the piston valve 5 in the distal direction. Yes.

  1 is smaller than the step portion 30 in the cylinder 3 in FIG. 1 and has an inner diameter substantially equal to the outer diameter of the column portion 50 in the piston valve 5, and the column portion 50 is inserted into this portion. A cylindrical guide groove 31 is formed to guide the disk 51 to the cartridge container 9 side.

  Further, an isolation sealing material 6 that covers the upper end surface of the cylinder 3 in FIG. 1 and the upper surface of the disc portion 51 of the piston valve 5 is provided. The inner peripheral surface of the isolation seal member 6 is in contact with the cylindrical outer peripheral surface of the piston valve 5, and therefore, the upper portion and the lower portion in FIG. Therefore, the elastic body 4 is isolated by the isolation sealing material 6 so that methanol does not adhere to the elastic body 4.

The outer peripheral surface of the cylindrical portion of the piston valve 5 with which the inner end surface of the ring-shaped isolation sealing material 6 is in contact is continuous with a conical conical portion 52 whose diameter increases from the cylindrical portion toward the distal end. To the large-diameter cylindrical portion 53. That is, the outer diameter of the part where the sealing material 6 for isolation is in close contact with the liquid is smaller than the outer diameter of the upper and lower parts, and the sealing seal is used in accordance with the movement of the piston valve 5 in the axial direction. The inner peripheral end of the material 6 moves and bends together with the piston valve 5.
A cylindrical collar 7 is installed on the upper end surface of the isolation sealing material 6. The collar 7 is a cylindrical member having an outer diameter substantially equal to the inner diameter of the body portion 20 of the housing 2 and an inner diameter larger than the outer diameter of the large-diameter column portion 53 in the piston valve 5. The upper end portion and the outer peripheral portion are provided with a channel 11 formed by partially cutting away a groove or the like. The flow path 11 continues to the cartridge container 9 through the outer surface side of the cylinder 3.

Of the above outer peripheral portion of the isolation seal member 6, portions corresponding to the flow path 11 is cut away so that the flow path 11, this portion away from the inner peripheral surface of the housing 2, the other part is the housing 2 It is in close contact with the inner peripheral surface of the. Therefore, in order to prevent the sealing material 6 for isolation from rotating in the circumferential direction and blocking the flow path 11, a protrusion 32 provided on the upper end surface of the cylinder 3 and a protrusion 70 provided on the lower end surface of the collar 7 Is fitted in a small hole provided in the isolation sealing material 6, and the isolation sealing material 6 is prevented from rotating by these projections 32, 70 and the small hole.

  Further, a tip side sealing material 8 is arranged in a state of being fitted to the piston valve 5 on the upper side in FIG. 1 of the collar 7 and the large diameter cylindrical portion 53 of the piston valve 5. The front end side sealing material 8 is in contact with the inner surface of the body portion 20, the inner surface of the shoulder portion 21, and the piston valve 5 of the housing 2.

  The tip side sealing material 8 will be further described. The shape thereof is as shown in the drawing (particularly in FIG. 4). The tip side sealing material 8 is composed of the upper end surface of the collar 7 and the large-diameter cylindrical portion 53 of the piston valve 5. A ring-shaped bottom portion 80 that is placed on the upper surface of the housing, and a cylindrical portion 81 that rises upward from the outer edge of the bottom portion 80 in FIG. 4 and contacts the lower surface of the body portion 20 and the shoulder portion 21 of the housing 2. And an inner cylinder portion 82 that comes into contact with a conical tapered surface 54 that rises from the inner edge of the bottom portion 80 to the upper side in FIG. 4 and decreases in diameter toward the distal end of the piston valve 5.

  A flange-shaped retaining plate portion 55 that is locked to the lower end of the mouth / neck portion 22 of the housing 2 and prevents the piston valve 5 from popping out is formed on the tip end side of the tapered surface 54 of the piston valve 5. Further, following this, a cylindrical or solid shaft-shaped front end portion 56 that contacts the piston valve 5 of the receiving side connection mechanism 1 ′ is formed.

Attachment 1 on the feed side of the present invention are as described above, it will now be described in reference to the drawings the connection mechanism 1 'of the receiving side of the present invention connected thereto. 2A is a top plan view showing the connection mechanism 1 ′ on the receiving side according to the present invention, and FIG. 2B is a cross-sectional view taken along line CD in the top plan view in the direction of the arrow. The receiving-side connection mechanism 1 ′ shown here is provided in the methanol fuel cell main body 10.

  The basic structure of the receiving-side connection mechanism 1 ′ shown in FIG. 2 is the same as that of the supply-side connection mechanism 1 described above. Therefore, in the configuration shown in FIG. Common parts or members are denoted by the same reference numerals or the same numerals with “′” added to the same numerals. The housing 2 ′ of the connection mechanism 1 ′ on the receiving side has a cylindrical shape, and is integrated with the methanol fuel cell main body 10 by two mounting tools provided radially projecting from the outer surface of the trunk portion 20 ′. It is attached as follows. One of the attachments 25 is inserted into the methanol fuel cell main body 10, and a flow path 11 ′ leading to the inside of the methanol fuel cell main body 10 is formed in the attachment 25.

  Further, a hollow cylindrical portion 26 is formed at the distal end portion of the housing 2 ′ of the receiving-side connection mechanism 1 ′ in order to fit the mouth-and-neck portion 22 of the housing 2 in the supply-side connection mechanism 1 described above. Yes. The cylindrical portion 26 corresponds to the cylindrical portion in the present invention, and the insertion guide convex piece 23 of the housing 2 in the connection mechanism 1 on the supply side can be fitted into a portion corresponding to the bottom portion of the cylindrical portion 26. The insertion guide convex piece 23 is provided with four recesses 27 having a shape in which the concaves and convexes are reversed, in a cross shape. Further, the retaining projections that are engaged with the retaining recesses 24 of the insertion guide projections 23 in the four recesses 27 into which the insertion guide projections 23 of the connection mechanism 1 on the supply side are fitted. 28 is provided.

  On the other hand, between the four recesses 27, as in the connection mechanism 1 on the supply side described above, the flow path 11 'is formed so as to lead to the inside of the shoulder portion 21' of the housing 2 '. Here, the receiving-side connection mechanism 1 ′ according to the present invention shown in FIG. 2 includes an elastic body 4, a piston valve 5, and a front-end-side sealing material 8, similarly to the supply-side connection mechanism 1 described above. .

  Further, the connection mechanism 1 ′ on the receiving side is provided with a cylinder 3 ′, which, unlike the cylinder 3 in the connection mechanism 1 on the supply side, has no flow path 11 between the housing 2 and the housing 3 The anti-rotation projection (not shown in FIG. 2) that is provided in 2 ′ and fixes the sealing material 6 ′ for isolation is provided in the same manner as the cylinder 3 of the connection mechanism 1 on the supply side.

  Further, the isolation sealing material 6 ′ of the receiving side connection mechanism 1 ′ shown in FIG. 2 has a structure for preventing rotation like the isolation sealing material 6 in the supply side connection mechanism 1. There is no channel 11 on the outside, and it has a ring shape.

  Further, the collar 7 ′ of the connection mechanism 1 ′ on the receiving side has a different structure from the collar 7 of the connection mechanism 1 on the supply side, and a rotation-preventing protrusion (see FIG. 2) that fixes the isolation seal 6 ′. Is omitted), but there is no flow path 11 that communicates with the cylinder 3 through the outer side surface, and the flow path 11 of the fixture 25 of the housing 2 ′ from the upper end surface of the collar 7 ′ to the upper portion on the outer side surface. A channel 11 ′ following “is formed. The other configuration of the receiving-side connection mechanism 1 ′ is the same as that of the supply-side connection mechanism 1. Therefore, the same or corresponding parts as those in FIG.

  The housings 2 and 2 ′, the cylinders 3 and 3 ′, the piston valves 5 and the collars 7 and 7 ′ in the connection mechanism 1 and 1 ′ according to the present invention are made of thermoplastic resin such as polypropylene (PP) or polyphenylene sulfide (PPS). ), High density polyethylene (HDPE), polystyrene (PS), polybutylene terephthalate (PBT), polyoxymethylene (POM), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyacrylonitrile (PAN), polybutylene Made of phthalate (PBN). Further, for the isolation sealing materials 6 and 6 ′, the front end side sealing material 8, the ring packing 12, and the packing 13, elastic materials such as various rubbers and thermoplastic elastomers are used.

  The connection mechanism 1 on the supply side and the connection mechanism 1 'on the reception side of the present invention have the above-described configuration, and the connection mechanism 1 on the supply side and the connection mechanism 1' on the reception side are connected to each other. The action or behavior will be described next. FIG. 3 is a longitudinal sectional view showing a state in which the connection mechanisms 1 and 1 ′ of the present invention shown in FIGS. 1 and 2 are connected.

  As shown in FIG. 3, when the mouth-and-neck part 22 of the connection mechanism 1 on the supply side is inserted into the cylindrical part 26 of the connection mechanism 1 ′ on the reception side, the insertion guide convex piece 23 is fitted into the recess 27, The retaining projection 28 and the retaining recess 24 are engaged. At this time, the size and shape of the insertion guide convex piece 23 and the recess 27 are distinguished for each standard so that the mouth-and-neck portion 22 of the connection mechanism 1 on the supply side that is out of specification does not fit into the recess 27. Yes. That is, erroneous connection is prevented by the convex piece 23 and the recess 27. Further, the ring packing 12 seals between the mouth and neck portion 22 and the cylindrical portion 26 to prevent foreign matters from flowing in from here.

  Almost simultaneously with the engagement of the retaining projection 28 and the retaining recess 24, the tip portions 56, 56 of the piston valves 5, 5 come into contact with each other while compressing the elastic bodies 4, 4. The cylindrical portions 50, 50 of the piston valves 5, 5 are pushed into the guide grooves 31, 31 of the cylinders 3, 3 ′, and then the movement of the piston valves 5, 5 is stopped.

  Since the inner peripheral portion of the isolation seal member 6, 6 ′ is sandwiched between the disc portions 51, 51 and the conical portions 52, 52 in the piston valves 5, 5, the piston valve 5 , 5 move as described above, the isolating sealing materials 6 and 6 ′ are deformed so that the cross-sectional shape becomes “<” as shown in FIG. The end portion is in contact with the conical portions 52 and 52 of the piston valves 5 and 5 and continues to isolate the elastic bodies 4 and 4.

Further, the outer diameter of the tapered surfaces 54, 54 of the piston valves 5, 5 gradually decreases toward the distal direction, whereas the piston valves 5, 5 have a resistance to the distal side seal members 8, 8. Since the inner cylinder portions 82 and 82 of the front end side sealing material 8 are separated from each other, the inner cylindrical portions 82 and 82 are separated from the conical tapered surfaces 54 and 54 of the piston valves 5 and 5, and as a result, the front end side sealing materials 8 and 8. The flow paths 11 and 11 ' are formed between the inner cylindrical portions 82 and 82 and the tapered surfaces 54 and 54 of the piston valves 5 and 5, respectively.

  As described above, when the connection mechanism 1 on the supply side and the connection mechanism 1 ′ on the reception side are connected, the methanol in the cartridge container 9 flows between the housing 2 and the cylinder 3 of the connection mechanism 1 on the supply side. 11, from here through the flow path 11 between the housing 2 and the collar 7, between the collar 7 and the cylindrical part 81 of the tip side sealing material 8, and the inner cylinder part 82 of the tip side sealing material 8. And the conical tapered surface 54 of the piston valve 5, and further through the flow path 11 between the mouth neck portion 22 and the piston valve 5, the cylindrical portion of the housing 2 ′ in the connection mechanism 1 ′ on the receiving side. 26 and the flow path 11 ′ between the front end portion 56 of the piston valve 5, and subsequently, the flow path 11 ′ between the inner cylinder portion 82 of the front end side sealing material 8 and the tapered surface 54 of the piston valve 5. Through the bottom 80 of the front end side sealing material 8 and the collar 7. Flowing into the methanol fuel cell main body 10 from the flow path 11 'in the fixture 25 passes between the.

As described above, when the cartridge container 9 is connected to the methanol fuel cell main body 10, the elastic bodies 4 and 4 pressing the piston valves 5 and 5 are compressed and deformed, and the isolation sealing materials 6 and 6 'are bent. I will not. The elastic force of the elastic bodies 4 and 4 is such a small pressing force that the above-described tapered surfaces 54 and 54 are brought into contact with the inner cylindrical portions 82 and 82 of the front end side sealing materials 8 and 8 in a liquid-tight state, and is isolated. The sealing materials 6 and 6 'are made of a flexible material such as rubber and are easily bent. Moreover, the cylindrical portions 50 and 50 of the piston valves 5 and 5 and the guide grooves 31 and 31 of the cylinders 3 and 3 ′ into which the piston valves 5 and 5 are inserted function as guides in the axial direction, and positively contact each other. since it will not slide relative to each other, nor sliding resistance occurs in particular between the guide grooves 31, 31 and these cylindrical portions 50, 50. Therefore, the force required to connect the connection mechanisms 1 and 1 ′ may be small. Therefore, according to the present invention, a connection mechanism that can be easily inserted and removed and can be reduced in size can be provided. Moreover, since there is no part which slides, maintaining liquid-tightness, abrasion and the fall of durability accompanying it can be avoided.

  The methanol flowing into the methanol fuel cell main body 10 as described above becomes carbon dioxide and water by the oxidation reaction in the methanol fuel cell and releases electric charges (electrons). It is conceivable that the piston valve 5 on the methanol fuel cell main body 10 side is pushed downward to make the piston valve 5 open.

However, in the connection mechanism 1 ′ according to the present invention, the thickness of the ring-shaped bottom portion 80 in the distal end side sealing material 8 is formed thinner than the thickness of the cylindrical portion 81 and the inner cylindrical portion 82, Further, a cylindrical portion 81 is fixed in the housing 2 ′. Therefore, as shown in the partial cross-sectional view of the case where the distal end side sealing material 8 in the connection mechanism 1 ′ of the present invention has expanded in FIG. 4, the cylindrical portion 81 serves as a fulcrum, and the force accompanying the expansion is The bottom 80, which is thinly configured and works in a direction perpendicular to the axis of the connection mechanism 1 ', is deformed so as to protrude toward the tip side (in other words, buckle), thereby moving the piston valve 5 backward. The elastic body 4 having a small repulsive force can be used by relieving the force to push the piston valve 5 open and taking measures against the swelling action of methanol.
In addition, this invention is not limited to embodiment mentioned above, The mechanism which connects the container which accommodates liquids other than methanol may be sufficient. Further, the cylinder portion in the present invention is not particularly required to be formed as a separate member from the housing, and may be formed as a part of the housing.

  DESCRIPTION OF SYMBOLS 1,1 '... Connection mechanism 2, 2' ... Housing, 3, 3 '... Cylinder, 4 ... Elastic body, 5 ... Piston valve, 6, 6' ... Isolation sealing material, 8 ... Tip side sealing material, 9 DESCRIPTION OF SYMBOLS ... Cartridge container, 10 ... Methanol fuel cell main body, 11, 11 '... Flow path, 13 ... Packing, 23 ... Insertion guide convex piece, 24 ... Retaining prevention concave part, 26 ... Cylindrical part, 27 ... Concavity, 28 ... 30: Stepped portion, 31 ... Guide groove, 32 ... Projection, 50 ... Column portion, 51 ... Disc portion, 52 ... Conical portion, 53 ... Large-diameter column portion, 54 ... Tapered surface, 56 ... A tip part, 70 ... a projection, 80 ... a bottom part, 81 ... a cylindrical part, 82 ... an inner cylinder part.

Claims (5)

A flow passage communicating with the tubular portion is provided inside the housing provided with a connecting tubular portion on the distal end side, and the flow passage is closed and retracted by being advanced toward the tubular portion side. In the connection mechanism of the liquid container provided with a piston valve that opens the flow path by being
A cylinder portion that accommodates a rear end portion of the piston valve is provided inside the housing,
An elastic body that presses the piston valve toward the cylindrical portion is contained inside the cylinder portion,
An isolation sealing material that seals the location where the elastic body is accommodated in a liquid-tight state is disposed at the end of the cylinder portion, and the isolation sealing material is liquid-tight on the outer peripheral surface of the piston valve. It is configured to be fitted in close contact with each other and bend while maintaining the close contact state in accordance with the movement of the piston valve, and is further advanced to the tubular portion side between the isolation sealing material and the tubular portion. A tip-side sealing material is provided to close the flow path in close contact with the outer peripheral surface of the piston valve, and to open the flow path away from the outer peripheral surface of the piston valve when the piston valve is retracted. A connecting mechanism for a liquid container. The outer peripheral surface of the piston valve with which the tip side sealing material is in close contact is formed as a conical taper surface with a diameter decreasing toward the tip direction where the cylindrical portion is formed,
The distal end side sealing material includes an inner cylinder part having a conical shape in which an inner peripheral surface is in close contact with the tapered surface, a cylindrical part fixed in close contact with the inner peripheral surface of the housing, and the inner cylindrical part, The connection mechanism for a liquid container according to claim 1, further comprising a ring-shaped bottom portion that connects the cylindrical portion. The isolation sealing material is formed in a ring shape,
The outer diameter of the portion where the sealing material for isolation in the piston valve is closely fitted is smaller than the outer diameter of the portion adjacent to the portion in the axial direction, and in the axial direction of the piston valve. The liquid container connecting mechanism according to claim 1 or 2, wherein an inner peripheral edge portion of the isolation sealing material is bent in the axial direction in accordance with the movement of the liquid container.   4. The connection mechanism for a liquid container according to claim 2, wherein the ring-shaped bottom portion of the front-end-side sealing material is formed thinner than the cylindrical portion and the inner cylindrical portion. The housing includes a supply housing and a receiving housing;
An insertion guide convex piece is provided on the distal end face of one housing, and a recess recessed in the same shape as the insertion guide convex piece is provided on the distal end face of the other housing. 5. The connection mechanism for a liquid container according to claim 1, wherein the recess is provided with a retaining recess and a projection so as to be fitted to each other.

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