JP2006017157A - Hose coupling - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coupling for connecting a hose with a valve for an LP gas container whereby connecting of a coupling can be prevented in a state that a valve is opened, and rattling at the time of connecting of the coupling can be prevented. <P>SOLUTION: The coupling includes a turning shaft 2m formed on an outer periphery of a coupling body, a pair of levers 2k pivotally attached on the turning shaft 2m, a beam member 21 mutually connecting longitudinal direction intermediate parts of the levers 2k, a recessed part 2s formed in the longitudinal direction intermediate part of the lever 2k and fitted onto a protruding part 1d of the valve 1, a plate cam 2n pivotally attached on a tip of the lever 2k and having a sliding side abutted to an outer peripheral surface of the protruding part 1d and slid in connecting of the valve 1 and the coupling body, and a grip part 2jb fixed on the coupling body on an opposite side from the beam member 21 while having a coupling axis therebetween. When the lever 2k is turned around the turning shaft 2m, the beam member 21 is in a form interfering with a valve handle 1e when the valve handle 1e is in an opened position. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a hose coupling, and more particularly to a hose coupling in consideration of the coupling and coupling of a hose coupling fixed to a hose and a valve.

  As for the hose coupling of the high-pressure hose (hereinafter referred to as coupling), there is a technique described in Patent Document 1, for example. In the technique described in Patent Document 1, a valve is installed in one side of a coupling, the valve is opened by coupling coupling, and the valve is closed when coupling coupling is released. . Further, unlike the technique described in Patent Document 1, the point that one of the couplings is a valve is the same, but the opening and closing of the valve is performed by a handle operation regardless of whether the coupling is coupled or not. Some of them are

  With reference to FIGS. 3-5, the example of the coupling which couple | bonds a high pressure hose with the valve | bulb of the container filled with high pressure gas, such as LP gas, is demonstrated.

  FIG. 3A shows a state in which the axis of the valve 1 attached to a container filled with high-pressure gas such as LP gas is aligned with the axis of the coupling 2 attached to the high-pressure hose, and FIG. FIG. 2 is a side view showing the appearance of the valve 1 in a state where the coupling 2 is coupled to the valve 1. 4 is a longitudinal sectional view of FIG. 3A, and FIG. 5 is a longitudinal sectional view of FIG.

  As shown in FIG. 4, a groove-shaped ball receiver 1 a is formed on the outer periphery of an end portion (hereinafter referred to as a coupling joint portion 1 c of the valve 1) that is coupled to the coupling 2 of the valve 1. As shown in FIG. 4, the coupling 2 includes a cylindrical nozzle portion 2 f that fits in the fluid flow path 1 b of the coupling joint portion 1 c of the valve 1, and a recess portion 2 h on the outer peripheral side of the nozzle portion 2 f. A ball holding portion 2g formed in a cylindrical shape with a gap therebetween, an operation sleeve 2c inserted in contact with the outer peripheral surface of the ball holding portion 2g and slidable in the axial direction, and an inner peripheral surface of the ball holding portion 2g And an inner sleeve 2b that is slidably inserted in the axial direction.

  The ball receiver 1a is formed so that the upper wall surface in the drawing is inclined upward in the drawing so that the groove width increases toward the outer peripheral side.

  The nozzle portion 2f is provided with a fluid flow path on the center side, and two O-ring grooves are formed in the circumferential direction at intervals on the outer peripheral surface in the axial direction, and O-rings 2a are respectively attached. The inner peripheral surface of the ball holding portion 2g is adapted to abut on the outer peripheral surface of the coupling joint portion 1c of the valve 1 when the coupling 2 is coupled to the valve 1, and the valve 1 A plurality of ball holes 2e penetrating in the radial direction are formed at positions facing the ball receiver 1a formed on the outer peripheral surface of the coupling joint portion 1c. Retaining ball 2d is housed in each ball hole 2e.

  The operating sleeve 2c and the intermediate sleeve 2b are urged downward in the figure by a spring (not shown). When the coupling 2 is not coupled to the valve 1, the positions shown in FIG. It is in. The diameter of the retaining ball 2d is larger than the thickness of the ball holding portion 2g in the radial direction. In the state shown in FIG. 4, the retaining ball 2d is urged downward in the figure. Thus, it is pushed in the direction toward the center and is in contact with the outer peripheral surface of the intermediate sleeve 2b.

  The radial thickness B3 of the coupling joint 1c of the valve 1 is the width of the recess 2h (the distance between the inner peripheral surface of the ball holding portion 2g and the outer peripheral surface of the nozzle portion 2f) B1, the inner periphery of the intermediate sleeve 2b. When compared with the distance B2 between the surface and the outer peripheral surface of the nozzle portion 2f, the relationship is B2 <B3 <B1. Further, if the inner diameter of the inner surface of the ball holding portion 2g is D1, the outer diameter of the coupling joint portion 1c is D2, the inner diameter of the coupling joint portion 1c is D3, and the outer diameter of the outer peripheral surface of the nozzle portion 2f is D4, D4 < The relationship is D3 <D2 <D1.

  At the time of coupling, the axis of the coupling 2 is aligned with the axis of the coupling joint 1c, and the coupling 2 is pressed against the coupling joint 1c so that the coupling joint 1c fits into the recessed portion 2h. . First, when the axial end surface of the coupling joint portion 1c hits the lower end surface in FIG. 5 of the middle sleeve 2b and further pushes down the coupling 2 downward in the drawing, the middle sleeve 2b becomes the coupling joint portion 1c. Is pushed back by the end face of FIG. If the coupling 2 is kept depressed as it is, the coupling joint portion 1c enters the indented portion 2h while pushing the intermediate sleeve 2b, and stops when the axial end surface of the coupling joint portion 1c hits the bottom of the indented portion 2h. In this state, the ball receiver 1a is in a position facing the ball hole 2e of the ball holding portion 2g, and the retaining ball 2d pushed in the direction toward the center by the operation sleeve 2c moves to the center side and moves to the ball Fits into the receiver 1a. When the retaining ball 2d moves to the center side, the operation sleeve 2c that has been prevented from moving downward in the figure by the retaining ball 2d until then moves downward by the spring force not shown in FIG. Stop at the indicated position. Accordingly, the retaining ball 2d fitted in the ball receiver 1a cannot move to the outer peripheral side and remains fitted in the ball receiver 1a.

  When the force that has pressed the coupling 2 toward the valve 1 at this stage is removed, the spring force that urges the intermediate sleeve 2b downward is applied to the axial end surface of the coupling joint 1c via the intermediate sleeve 2b. The coupling 2 acts in a direction to separate it from the coupling joint 1c. However, since the retaining ball 2d is fitted in the ball receiver 1a, the relative movement in the axial direction between the ball holding portion 2g and the coupling joint portion 1c is rejected, and the coupling between the coupling 2 and the valve 1 is maintained. The A space between the inner peripheral surface of the coupling joint portion 1c and the nozzle portion 2f is sealed with two O-rings to realize hose coupling.

  To release the coupling, after confirming that the valve is closed, the operating sleeve 2c is pushed upward to move the portion where the inner diameter of the end of the operating sleeve is increased to the position of the ball hole 2e, and then the coupling 2 Pull up. The retaining ball 2d is pushed upward by the lower side wall surface of the ball hole 2e in the drawing and hits the inclined wall surface on the upper side of the ball receiver 1a to receive a force directed radially outward. The portion where the inner diameter of the operation sleeve 2c is increased comes to the position of the ball hole 2e, and the retaining ball 2d can be moved radially outward. It moves outward in the radial direction by the force received from the upper inclined wall surface. When the retaining ball 2d moves outward in the radial direction from the inner peripheral surface of the ball holding portion 2g, nothing obstructs the relative movement of the ball holding portion 2g and the coupling joint portion 1c in the axial direction, and the coupling 2 is moved upward. Pulled apart. As the coupling 2 is pulled upward, the coupling joint portion 1c moves relative to the nozzle portion 2f in the axially lower direction in the figure, and accordingly, the intermediate sleeve 2b is driven by a spring not shown. It moves downward in the figure. Finally, coupling coupling is released when the inner peripheral surface of the coupling joint portion 1c is separated from the outer peripheral surface of the nozzle portion 2f. The retaining ball 2d is a portion in which the inner diameter of the operation sleeve 2c is enlarged in a state where the inner side is in contact with the outer peripheral surface of the intermediate sleeve 2b and the outer side is partially protruded from the outer peripheral surface of the ball holding portion 2g. It is held in contact with the inner peripheral surface.

JP-A-7-71674 (0008-0017, FIG. 2)

  In the prior art illustrated in FIG. 3 to FIG. 5, since the coupling joint portion 1c is fitted into the recess portion 2h, the dimensions of the parts are set so that B3 <B1 as described above. Yes. That is, it is inevitable that a gap is formed between the inner peripheral surface of the ball holding portion 2g and the outer peripheral surface of the coupling joint portion 1c. The coupling 2 is supported by the O-ring 2a and the retaining ball 2d only in the direction orthogonal to the axis with respect to the valve 1. For this reason, in the state in which the valve 1 and the coupling 2 are coupled, there is a frustration in which rattling occurs between the two and a sense of security that it is securely fixed cannot be obtained.

  Further, as described in Patent Document 1, the hose coupling provided in the LP gas container valve is closed when the hose coupling is not coupled, and is opened when the hose coupling is coupled ( The coupling hose coupling to the container valve needs to be performed in a state in which the container valve is closed. Even when the container valve is open, if the hose coupling is not coupled, the coupling internal valve is closed, so there is no risk of gas leaking. However, if the hose coupling is connected with the container valve open (the coupling internal valve is closed), the internal valve opens immediately before the connection. Gas will flow into the hose just connected. In order to couple the coupling with the container valve against the inflowing gas pressure, a large force (10 kg or more) against the gas pressure is required. If the coupling force is weak, it is rebounded by the gas pressure and attached. 4 or a phenomenon in which the O-ring shown in 2a of FIG. 4 comes off due to the flowing gas flow may cause a gas leakage accident. The other end of the connected hose is open as long as the other end of the connected hose is connected to a device to which gas is to be supplied and gas may flow into the hose. Cases are also conceivable.

  In the above prior art, the coupling 2 can be coupled and released regardless of the open / close state of the container valve, which is not desirable in handling.

  An object of the present invention is to provide a coupling for connecting a hose to a valve for an LP gas container having a coupling joint so that the coupling is not coupled with the valve opened, and at the time of coupling coupling. It is to eliminate rattling.

  The above-described problem is a hose coupling fixed to a hose coupled to a container valve having an opening / closing means and detachably coupled to the valve, which is attached to the outer peripheral surface of the coupling body, The fixing means engages with a protrusion formed on an outer peripheral surface to hold the coupling body and the valve in a coupled state, and the fixing means has an axis of the outer periphery of the coupling body. A pair of rotating shafts formed to project in a direction orthogonal to the axis at positions facing each other across the pair, and a pair of rotating members pivotally attached to the pair of rotating shafts, respectively, A beam member that couples the intermediate portions in the longitudinal direction of the pair of rotating members; an engaging portion that is provided at a distal end portion of each of the rotating members and engages with the protruding portion of the valve; and the coupling Connect the beam member and coupling axis to the body. A gripping portion that is fixed to the opposite side and extends from the axial position to the coupling coupling end side, and the axial distance between the coupling coupling end side end position of the gripping portion and the shaft is When the coupling body is coupled with the valve, the beam member is larger than the axial distance between the opening / closing means of the valve and the shaft, and the beam member rotates when the beam member rotates about the shaft. A coupling that includes at least a part of the opening / closing means in the valve open position and does not include the opening / closing means in the valve closed position in a state in which the coupling body is coupled to the valve in a moving range. Is achieved.

  According to the above configuration, when coupling the coupling to the valve, the positional relationship between the coupling and the valve is set so that the beam member side becomes the valve opening / closing means side due to the presence of the gripping portion that interferes with the valve opening / closing means. Furthermore, the shape of the beam member is such that when the valve opening / closing means is in the valve open position, the beam opening / closing means interferes with the valve opening / closing means before rotating to a position where the engaging portion of the rotating member engages with the protrusion of the valve. Since the rotating member has a shape incapable of rotating, the hose coupling is not coupled to the valve when the valve is open. Further, the engaging portion of the rotating member engages with the protrusion of the valve so that the coupling between the two can be confirmed and the rattling of the coupling portion can be eliminated.

  According to the present invention, the engaging portion of the rotating member forming a part of the coupling can be engaged with the protrusion of the valve so that the coupling between the two can be confirmed and the rattling of the coupling portion can be eliminated. When the container valve opening / closing means is in the open position, the coupling cannot be connected to or released from the container valve, and the coupling is not attached or detached in the valve open state.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows that a coupling 2 according to the present invention fixed to a hose (not shown) is to be coupled to a container valve (hereinafter referred to as a valve) 1 attached to an LP gas container (not shown). FIG. 2 shows a state in which the coupling 2 is coupled to the valve 1.

  The valve 1 is provided with a coupling joint portion 1c that includes a valve (coupling internal valve) and is coupled to the coupling 2 according to the present invention. Further, on the outer peripheral surface of the valve 1, a valve handle seat 1f for attaching a valve handle 1e as an opening / closing means for opening and closing the valve is provided so as to protrude in the radial direction with its axis orthogonal to the axis of the valve 1. A valve handle 1e is attached to the valve handle seat 1f. On the outer peripheral surface of the valve 1, a protrusion 1 d that protrudes in a cylindrical shape with the axis orthogonal to a plane formed including the axis of the valve handle seat 1 f and the axis of the valve 1 sandwiches the axis of the valve 1. It is formed at a symmetrical position. The protrusion 1d is provided for fixing the container when the LP gas container is filled with LP gas.

  The valve handle 1e is rotatable about the axis of the valve handle seat 1f as a rotation axis, and has a longitudinal axis in a direction perpendicular to the axis of the valve handle seat 1f. When the longitudinal axis of the valve handle 1e is in a position parallel to the plane (the plane formed including the axis of the valve handle seat 1f and the axis of the valve 1), the valve is in the open position, and its longitudinal direction When the axis is in a position perpendicular to the plane, the valve is in the closed position.

  The coupling 2 includes a coupling main body including members indicated by reference numerals 2a to 2h in FIG. 4 and a position on the outer periphery of the coupling main body facing each other across the axis in a direction perpendicular to the axis. A pair of pivot shafts 2m formed to project, a pair of levers 2k that are pivotally attached to the pair of pivot shafts 2m so that one end thereof is pivotable, and the longitudinal length of the pair of levers 2k A beam member 2l that couples the intermediate direction portions to each other, an engaging portion that is provided at the tip of each of the levers 2k and engages with the protruding portion 1d, and a gripping portion that is fixed to the pair of rotating shafts 2m 2j.

  One end of the lever 2k is formed in a dogleg shape pivotally attached to the pivot shaft 2m, and the beam member 2l is coupled to the bent portion of the dogleg shape. Further, a recessed portion 2s having an arc having a radius equal to the radius of the protruding portion 1d as an inner peripheral surface is formed inside the bent portion. The position of the recess 2s, that is, the center position of the arc is the distance from the rotation shaft 2m to the center of the arc when the coupling 2 and the valve 1 are coupled with each other. The position is equal to the center-to-center distance of the shaft 2m. In the present embodiment, the recess 2s is formed in an arc. However, the recess 2s does not necessarily have an arc. If the projection 1d is fitted in the recess 2s, the recess 2s may have a shape and a size that do not rattle. That's fine.

  A rotating shaft 2p whose axis is parallel to the rotating shaft 2m is fixed to the other end of the lever 2k, and a plate cam 2n provided with a lever 2q is pivotally attached to the rotating shaft 2p. The rotary shaft 2p is at a position shifted counterclockwise in the figure with respect to a straight line connecting the rotary shaft 2m and the center of the arc. Further, the distance between the centers of the rotating shaft 2m and the rotating shaft 2p is larger than the distance between the center of the rotating shaft 2m and the center of the protruding portion 1d in the coupled coupling state plus the radius of the protruding portion 1d. is there. The plate cam 2n is provided with a sliding side that slides while contacting the protrusion 1d while being inclined downward in the drawing when the coupling 2 and the valve 1 are coupled. This sliding side coincides with the straight line connecting the center of the rotating shaft 2m and the center of the protrusion 1d so that the lever 2k rotates counterclockwise and connects the center of the rotating shaft 2m and the center of the rotating shaft 2p. When the lever 2k is further rotated counterclockwise when it comes into contact with the protruding portion 1d and is orthogonal to the straight line connecting the center of the rotating shaft 2m and the center of the protruding portion 1d, the rotating shaft 2p is rotated around the rotating shaft 2p. In the figure, it swings counterclockwise and falls off the left side in a state of falling to the left. In this state, the protrusion 1d is fitted into the recess 2s of the lever 2k, and the rotation of the lever 2k is stopped.

  The engaging portion is constituted by the concave portion 2s, the rotating shaft 2p, and a plate cam 2n pivotally attached to the rotating shaft 2p.

  The grip portion 2j is arranged in a donut shape on the outer periphery of the coupling main body, and an annular portion 2ja fixed to the rotating shaft 2m, and is coupled to the annular portion 2ja to sandwich the beam member 21 and the coupling axis. It is arranged on the opposite side, and consists of a last part 2jb extending from the position of the rotating shaft 2m to the coupling end side of the coupling body. The axial length between the end of the coupling portion 2jb on the coupling coupling end side and the rotational shaft 2m is such that the rotational shaft 2m and the valve 1 when the coupling 2 is coupled to the valve 1 are as follows. The distance from the valve handle seat 1f in the axial direction is several centimeters. Further, the radial distance from the coupling axis of the last part 2jb is smaller than the distance from the outer peripheral end of the valve handle seat 1f in the valve radial direction to the axis of the valve 1.

  The beam member 21 is counterclockwise in FIG. 1 from the state in which the beam member 21 and the lever 2k are coupled to the valve 1 from the state in which the coupling 2 starts to be coupled to the valve 1 with the pivot shaft 2m as the center. When the valve handle 1e of the valve 1 is in the valve open position when rotating in the direction of the arrow A, the coupling 2 becomes closer to the coupling joint 1c as the coupling internal valve is opened. The beam member 2l hits the valve handle 1e and is formed in a shape and position so that the lever 2k does not rotate any more. On the other hand, when the valve handle 1e of the valve 1 is in the valve closed position, the beam member 21 can continue to rotate without interfering with other members until the coupling 2 and the valve 1 are completely coupled. It is formed in various shapes and positions.

  When the coupling between the coupling 2 and the valve 1 is completed, the rotation of the beam member 21 and the lever 2k reaches the end point on the coupling side and stops. However, the shape of the beam member 21 is The handle 1e is configured to be able to rotate without trouble from the closed position to the open position or from the open position to the closed position.

  Further, when the lever 2k and the beam member 21 are in the end position where the coupling 2 and the valve 1 are coupled and the valve handle 1e is in the open position, the beam member 21 and the lever 2k are rotated clockwise in the figure. If the beam member 21 is in contact with the valve handle 1e in the open position and the valve handle 1e is not in the closed position, the beam member 21 and the lever 2k rotate in the clockwise direction. The coupling cannot be released.

  In other words, the beam member 21 is in a valve open position in a state where the coupling body is coupled to the valve 1 in a rotation range when the beam member 21 is rotated around the rotation shaft 2m. It includes at least a part of the space occupied by the valve handle 1e and does not include the space occupied by the valve handle 1e in the valve closed position.

  Hereinafter, an operation of coupling the coupling 2 having the above configuration to the valve 1 will be described. In the following description, the top, bottom, left and right are expressed with reference to the state of FIG.

  The operator aligns the axis of the coupling 2 with the axis of the valve 1 in a state where the lever 2k is flipped up in the lateral direction, and brings the coupling 2 closer to the valve 1 from above. At this time, if the end portion 2jb is on the valve handle seat 1f side, the end portion 2jb hits the valve handle seat 1f and cannot be coupled. Thus, the position of the coupling 2 is adjusted. That is, the lever 2k and the beam member 21 are positioned on the valve handle seat 1f side.

  The coupling 2 is brought close to the valve 1, and the nozzle part 2 f of the coupling 2 is inserted into the coupling side joint part 1 c of the valve 1. Next, the lever 2k and the beam member 21 are rotated counterclockwise, and as shown in FIG. 1, the sliding side of the plate cam 2n comes into contact with the protrusion 1d. At this time, if the valve handle 1e is in the open position, the beam member 21 hits the valve handle 1e before the lever 2k and the beam member 21 are rotated to the state shown in FIG. Therefore, in such a case, the operator performs coupling coupling after operating the valve handle 1e to the closed position.

  If a force continues to be applied to the lever 2k and the beam member 2l so as to rotate counterclockwise without the beam member 2l hitting the valve handle 1e, this force is applied from the sliding side in contact with the projection 1d. The protrusion 1d is given with a tangential force to the outer peripheral surface of the protrusion 1d and a force perpendicular to the outer peripheral surface. On the other hand, the abutting portion of the sliding side receives a reaction force from the projection 1d, and the reaction force is transmitted to the lever 2k via the rotating shaft 2p. Due to the downward component force of the reaction force, the lever 2k is pulled downward, that is, the coupling 2 moves in the direction of arrow B in FIG.

  When the lever 2k and the beam member 21 are further rotated counterclockwise from the state shown in FIG. 1, the sliding side of the plate cam 2n moves along the outer peripheral surface of the protrusion 1d, and the rotation shaft 2p is rotated. It is on the extension of a straight line connecting the center of 2 m and the center of the protrusion 1d. At this time, the sliding side of the plate cam 2n is perpendicular to the straight line connecting the center of the rotation shaft 2m and the center of the projection 1d, and the rotation shaft 2m is closest to the projection 1d. In other words, the coupling 2 is closest to the valve 1. In this state, the lever 2k and the beam member 21 are further rotated counterclockwise. When the state shown in FIG. 2 is reached, the plate cam 2n is detached from the protrusion 1d, and at the same time, the protrusion 1d is completely in the recess 2s of the lever 2k. Fit. When the protrusion 1d is completely fitted in the recess 2s of the lever 2k, the rotation of the lever 2k is stopped and the coupling is completed.

  In this state, the protrusion 1d is completely bitten into the recess 2s of the lever 2k, and the coupling 2 is firmly coupled and fixed to the container valve 1. Since the protrusion 1d is completely bitten into the recess 2s of the lever 2k, the coupling is not rattled. Further, as shown in FIG. 2, the beam member 21 is located on the inner side (projection side) of the valve handle 1e, and the valve handle 1e in the closed position is operated to the open position shown in FIG. The operation of returning the valve handle 1e to the closed position can be performed without any trouble.

  When removing the coupling, first, the valve handle 1e is in the closed position (as shown in FIG. 1, the position in which the longitudinal axis of the valve handle 1e is perpendicular to the paper surface, in other words, the longitudinal axis of the valve handle 1e is 2 and a position perpendicular to the plane including the axis of the valve handle seat 1f), the plate cam in the position shown in FIG. 2 is raised and the lever 2q is pulled up to rotate the plate cam 2n clockwise. The plate cam 2n is rotated with its sliding side abutting against the protrusion 1d, and a force in a direction away from the protrusion 1d is applied to the lever 2k via the rotating shaft 2p. To move away from the protrusion 1d.

  When the lever 2k is disengaged from the protrusion 1d, the coupling 2 is released from the container valve 1 by a normal procedure.

  According to the present embodiment, when coupling the coupling 2 to the container valve 1, there is no possibility that the operation of coupling the coupling 2 is performed in a state where the container valve 1 is opened. There is no risk of rattling when the ring 2 is connected to the container valve 1. Further, since the coupling 2 is fixed to the container valve 1 by engaging the recess 2s of the lever 2k with the protrusion 1d, it can be confirmed that both are securely fixed, and a sense of security is obtained.

  In the above-described embodiment, the coupling body is provided with the retaining ball 2d. However, the coupling 2 is configured such that the recess 2s formed in the lever 2k is engaged with the protrusion 1d and the container valve 1 is engaged. It is not always necessary to provide the retaining ball 2d.

It is a side view which shows the state before the coupling | bonding with the valve for containers of embodiment of this invention. It is a side view which shows the combined state with the valve for containers of embodiment of this invention. It is a front view which shows the state before and behind the coupling | bonding with the valve for containers of the coupling of a prior art. It is sectional drawing which shows the state before coupling | bonding with the valve for containers of the coupling of the prior art shown in FIG. It is sectional drawing which shows the coupling | bonding state with the valve for containers of the coupling of the prior art shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Container valve 1a Ball receiver 1b Fluid flow path 1c Coupling side joint part 1d Protrusion part 1e Valve handle 1f Valve handle seat 2 Coupling 2a O-ring 2b Middle sleeve 2c Operation sleeve 2d Retaining ball 2e Ball hole 2f Nozzle part 2g Ball holding part 2h Recessed part 2j Grasping part 2ja Annular part 2jb Bare part 2k Lever 2l Beam member 2m Rotating shaft 2n Plate cam 2p Rotating shaft 2q Plate cam pulling lever 2s Concave

Claims (2)

A hose coupling fixed to a hose connected to a container valve having an opening / closing means and removably coupled to the valve, and is attached to the outer peripheral surface of the coupling body, and is formed on the outer peripheral surface of the valve. A fixing means for engaging the protrusion and holding the coupling body and the valve in a coupled state,
The fixing means includes a pair of rotating shafts that are formed on the outer periphery of the coupling body so as to face each other across the coupling axis and project in a direction perpendicular to the axis, and the pair of rotating shafts A pair of pivot members pivotably attached to each other, a beam member that couples the intermediate portions in the longitudinal direction of the pair of pivot members to each other, and provided at the respective distal ends of the pivot members. An engagement portion that engages with the protrusion of the valve, and is fixed to the coupling body on the opposite side across the beam member and the coupling axis, and extends from the pivot shaft position to the coupling coupling end side. A holding part, and
The axial distance between the coupling coupling end side end position of the grip portion and the rotation shaft is the axial direction between the opening / closing means of the valve and the rotation shaft when the coupling body is coupled to the valve. Greater than the interval,
The beam member has a space occupied by the opening / closing means in the valve open position in a state where the coupling body is coupled to the valve in a rotation range when the beam member rotates about the rotation axis. A hose coupling including at least a part and not including a space occupied by the opening / closing means in a valve closed position. 2. The hose coupling according to claim 1, wherein the engaging portion is a recess formed in the rotating member and fitted into the protruding portion, and the rotating member is planted with an axis parallel to the rotating shaft 2 m. And a plate cam having a sliding side that is pivotally attached to the rotating shaft and slides while abutting against the protrusion when the coupling body is coupled to the valve. Hose coupling characterized by being made.

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