Joint components, fire hydrant equipment and connecting pipes

Abstract

To provide a joint member that is interposed in a tube body for use, and can adjust a tip part of the tube body to a desired position and also retract the tube body.SOLUTION: A joint member A of the present invention has a first member 1 which has a first flow passage formed to have opening parts at both ends, and a second member 2 which is arranged at the one-end opening part 12 of the first flow passage 11 of the first member 1 and also has a second flow passage 23 formed to have opening parts at both ends, wherein the first flow passage 11 and the second flow passage 23 communicate with each other, and the second member 2 can be rotated on a shaft core of the one-end opening part of the first flow passage 11 and displaced in the shaft core direction of the one-end opening part 12 of the first member 1, and is arranged to be fixed at an arbitrary position.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a joint member, and further to a fire hydrant system and a connecting pipe that are installed in the inner walls of buildings such as office buildings, apartment buildings, and department stores, and that are configured to discharge fire water from a water supply pipe through a fire hose by opening a fire hydrant valve in the event of a fire. [Background technology]

[0002] Conventionally, as described in Patent Document 1 and Patent Document 2, there has been known a fire hydrant storage box that stores a fire hose, a nozzle, a fire hydrant valve, and the like used in firefighting activities in preparation for a fire. Such a fire hydrant storage box is installed in a storage box installation space provided in an inner wall such as a passage wall in a building, and a tip of a connecting pipe branching off from a water supply pipe vertically installed on the rear side of the inner wall is inserted into the fire hydrant storage box through a connecting pipe insertion hole provided in the back plate of the fire hydrant storage box to connect the tip to the inlet of the fire hydrant valve, while a base end of the fire hose is connected to the outlet of the fire hydrant valve, thereby forming a fire hydrant system.

[0003] In addition, a water supply pipe is arranged at the rear of the fire hydrant storage box, and a rigid connecting pipe branches off from this water supply pipe and is arranged horizontally.The tip of this connecting pipe is pulled into the fire hydrant storage box, and a fire hydrant valve is attached to the tip of the connecting pipe.

[0004] With the fire extinguishing equipment configured as described above, when installing the fire hydrant storage box on the inner wall of a building, a rectangular space of the same shape as the fire hydrant storage box is first provided in the inner wall, and the fire hydrant storage box is then embedded and fixed in this space. However, at this time, there may be some relative misalignment between the position of the rectangular space for installing the fire hydrant storage box and the connecting pipe that branches off from the water supply pipe and is arranged horizontally.

[0005] For this reason, the storage box installation space in which the fire hydrant storage box is to be installed is formed larger in advance, and the position of the fire hydrant storage box is adjusted within the storage box installation space to correct the misalignment between the connecting pipe insertion hole of the fire hydrant storage box and the connecting pipe (water supply pipe).However, adjusting the position of the fire hydrant storage box within the storage box installation space has the problem that it takes time and effort.

[0006] Patent Document 3 proposes a fire extinguishing system comprising a flexible pipe, a fire hydrant valve provided at one end of the flexible pipe, a flange-shaped mounting plate fixed near the fire hydrant valve, a joint portion provided at the other end of the flexible pipe, and a fire hydrant storage box having a fire hydrant valve insertion hole formed in the rear box, through which the fire hydrant valve can be inserted and having an opening area smaller than that of the mounting plate, in which the fire hydrant valve is inserted into the fire hydrant valve insertion hole and the mounting plate is fixed to the rear box, and the joint portion is connected to a branch joint provided on a water supply pipe piped inside the wall of a building, and a flexible pipe is used in this fire extinguishing system. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Utility Model Application Publication No. 3-78566 [Patent Document 2] JP 2005-270494 A [Patent Document 3] JP 2019-10255 A Summary of the Invention [Problem to be solved by the invention]

[0008] However, in the fire extinguishing equipment of Patent Document 3, after a water pressure test is conducted to check for leakage from the flexible pipe, until the fire hydrant storage box is disposed in the storage box installation space, the flexible pipe is in a state of hanging down from above or to the side in a narrow space within the inner wall with its base end connected to the water supply pipe, and there is a problem in that there is a risk that the flexible pipe will be damaged if a worker or a work tool used by the worker collides with the flexible pipe which is filled with water and already subjected to stress from the inside.

[0009] Therefore, it is possible to consider bending the flexible tube partway and moving it out of the way, but after closing the fire hydrant valve attached to the end of the flexible tube, a water pressure test is performed by filling the flexible tube with water and applying a certain pressure.Since the flexible tube is filled with water, the flexibility of the flexible tube is reduced, making it difficult to bend the flexible tube itself and difficult to move it out of the way, which poses the problem.

[0010] Furthermore, if the flexible tube is forcibly bent when it is filled with water and its flexibility is reduced, the flexible tube may be damaged, which may cause water leakage.

[0011] The present invention provides a joint member that is used by being interposed between a pipe, and that allows the tip of the pipe to be adjusted to a desired position and allows the pipe to be retracted. The present invention also provides a fire hydrant facility and a connecting pipe that allow easy correction of misalignment between a fire hydrant valve insertion hole of a fire hydrant storage box and a connecting pipe. [Means for solving the problem]

[0012] The joint member of the present invention comprises: A first member having a first flow passage formed therein and having openings at both ends; a second member provided with a second flow passage having openings at both ends and disposed at one end opening of the first flow passage of the first member; The first flow path and the second flow path are in communication with each other, The second member is characterized in that it is arranged so as to be freely rotatable around the axis of one end opening of the first flow path and displaceable in the axial direction of one end opening of the first member, and so as to be fixable at any position.

[0013] The fire hydrant equipment of the present invention comprises: a fire hydrant storage box that is installed in a storage box installation space on an inner wall of a building and stores a fire hose therein, and has a fire hydrant valve insertion hole formed in a wall panel through which a fire hydrant valve can be inserted; A water supply pipe arranged outside the fire hydrant storage box; A fire hydrant system including a fire hydrant valve disposed in the fire hydrant storage box and a connecting pipe connecting the water supply pipe, The connecting pipe is provided with a joint member, The above joint member is A first member having a first flow passage formed therein and having openings at both ends; a second member provided with a second flow passage having openings at both ends and disposed at one end opening of the first flow passage of the first member; The first flow path and the second flow path are in communication with each other, The second member is characterized in that it is arranged so as to be freely rotatable around the axis of one end opening of the first flow path and displaceable in the axial direction of one end opening of the first member, and so as to be fixable at any position.

[0014] The connecting pipe of the present invention is A fire hydrant storage box is installed in a storage box installation space on an inner wall of a building, a fire hose is stored therein, and a fire hydrant valve insertion hole through which a fire hydrant valve can be inserted is formed in a wall plate, and a connection pipe connects the fire hydrant storage box to a water supply pipe that is piped outside the fire hydrant storage box, The connecting pipe is provided with a joint member, The above joint member is A first member having a first flow passage formed therein and having openings at both ends; a second member provided with a second flow passage having openings at both ends and disposed at one end opening of the first flow passage of the first member; The first flow path and the second flow path are in communication with each other, The second member is characterized in that it is arranged so as to be freely rotatable around the axis of one end opening of the first flow path and displaceable in the axial direction of one end opening of the first member, and so as to be fixable at any position. Effect of the Invention

[0015] Since the coupling member of the present invention has the configuration as described above, it is possible to easily adjust the position of the tip of the pipe connected to the second member of the coupling member, thereby adjusting the position of the tip of the pipe or an attachment such as a fire hydrant valve attached to the tip of the pipe.

[0016] The pipe connected to the second member can be rotated around the axis of one end opening of the first member body, and the tip of the pipe connected to the one end side of the second member and an attachment such as a fire hydrant valve attached to the tip of the pipe can be arranged in a state oriented in the desired direction.

[0017] In the above coupling member, when a part of the wall portion of the first flow path of the first member is made into a movable wall portion on an extension line of the axis of the one end opening of the first flow path of the first member, this movable wall portion is connected to the second member, and the movable wall portion is displaced in a direction toward or away from the one end opening of the first flow path of the first member in conjunction with the second member to displace the one end opening of the first flow path, by operating the movable wall portion, the second member is displaced relative to the one end opening of the first flow path in conjunction with the operation of the movable wall portion, and the position of the tip of the pipe connected to the second member is displaced, thereby easily adjusting the position of the tip of the pipe or an attachment such as a fire hydrant valve attached to the tip of the pipe.

[0018] In the above coupling member, an installation opening for installing a movable wall portion is formed in the wall portion of the first flow path of the first member, the movable wall portion is arranged within this installation opening, and a cylindrical support portion is provided facing outward at the open end of the installation opening, while a rotating shaft portion is formed on the outer surface of the movable wall portion and a cap body is rotatably fitted and integrated into this rotating shaft portion. The screw portion formed on the cap body is screwed into the screw portion formed on the outer peripheral surface of the cylindrical support portion so as to be able to advance and retreat freely, and the cap body is screwed forward or backward relative to the cylindrical support portion, so that the second member is displaced via the movable wall portion. By operating the cap body, the second member can be easily displaced relative to the one end opening of the first member, and the tip of the pipe body connected to the one end side of the second member and an attachment such as a fire hydrant valve attached to the tip of the pipe body can be arranged at the desired position.

[0019] The coupling member of the present invention has the above coupling members as a first coupling member and a second coupling member, and the other end openings of the first flow paths of the first coupling member and the second coupling member are connected and communicated with each other in a state in which the relative displacement direction of the second member with respect to the first member in the first coupling member and the relative displacement direction of the second member with respect to the first member in the second coupling member intersect. Therefore, the positions of the tip of the pipe connected to one end side of the second member of either the first coupling member or the second coupling member and the attachment such as a fire hydrant valve attached to the tip of the pipe can be adjusted in two directions, and the attachment direction of the tip of the pipe and the attachment can be adjusted, so that the tip of the pipe and the attachment can be easily arranged at a desired position while being oriented in a desired direction.

[0020] According to the fire hydrant equipment and connecting pipe of the present invention, the position and mounting direction of the tip of the pipe connected to one end side of the second member of the coupling member and the attachments such as the fire hydrant valve attached to the tip of the pipe can be easily adjusted, so that the positional deviation between the fire hydrant valve insertion hole of the fire hydrant storage box and the tip of the connecting pipe can be easily adjusted. [Brief description of the drawings]

[0021] [Figure 1] FIG. 2 is a cross-sectional view showing a joint member of the present invention. [Diagram 2] FIG. 4 is a cross-sectional view showing another state of the joint member of the present invention. [Diagram 3] FIG. 2 is a perspective view showing a joint member of the present invention. [Figure 4] FIG. 2 is an exploded perspective view showing the joint member of the present invention. [Diagram 5] FIG. 4 is a cross-sectional view showing another example of a joint member of the present invention. [Figure 6] FIG. 2 is a front view showing how to use the joint member of the present invention. [Figure 7] FIG. 4 is a side view showing how to use the joint member of the present invention. [Figure 8] FIG. 2 is a front view showing how to use the joint member of the present invention. [Figure 9] FIG. 4 is a side view showing how to use the joint member of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] Specific examples of the present invention will be described with reference to the drawings. As shown in Fig. 1 to Fig. 4, a joint member A has a first member 1 having a first flow passage 11 formed therein, and a second member 2 disposed at one end opening 12 of the first flow passage 11 of the first member 1.

[0023] The first member 1 of the joint member A has a first flow passage 11 with both ends open. The first flow passage 11 of the first member 1 is configured to allow liquid such as fire extinguishing water to flow through. The first flow passage 11 has a bent portion in a part thereof, and the one end opening 12 and the other end opening 16 are open in intersecting directions (different directions). In the joint member shown in FIG. 1, the opening direction of the one end opening 12 of the first flow passage 11 is perpendicular to the opening direction of the other end opening 16. A connection portion 16a such as a screw portion for connecting another pipe body is formed on the inner or outer peripheral surface of the other end opening 16 of the first flow passage 11. In the following description, a case where the fluid is fire extinguishing water will be described as an example, but is not limited to fire extinguishing water.

[0024] One end opening 12 of first flow passage 11 of first member 1 is formed to have a cross section in a perfect circular shape, and the second member 2 is disposed within this one end opening 12 so as to be displaceable in the axial direction of this one end opening 12 and rotatable around the axial center. That is, a portion of second member 2 disposed within one end opening 12 of first flow passage 11 of first member 1 (insertion portion) is formed in a cylindrical shape, and disposed within one end opening 12 of first flow passage 11 so as to be rotatable around the axial center of one end opening 12.

[0025] The insertion portion of the second member 2 is formed cylindrically, and the axis of the insertion portion of the second member 2 coincides with the axis of one end opening 12 of the first flow path 11 of the first member 1, and the first member is configured to be freely rotatable around the axis of the insertion portion of the second member 2.

[0026] The second member 2 is formed with a second flow passage 23 penetrating between both end faces, and this second flow passage 23 is connected and communicated with the first flow passage 11 of the first member 1 at the other end opening. A connection part 24 such as a screw part for connecting another pipe body in a watertight manner is formed at one end opening of the second member 2, and the pipe body connected to the second member 2 is connected and communicated with the first flow passage 11 of the first member 1 through the second flow passage 23 of the second member 2. Note that a connection part for connecting another pipe body may be formed on the outer circumferential surface of one end of the second member 2.

[0027] An outer peripheral surface 21 of the insertion portion of the second member 2 is in sliding contact with an inner peripheral surface 12a of one end opening 12 of the first flow passage 11 of the first member 1 over the entire surface, and further, a packing 22 such as an O-ring is interposed between the inner peripheral surface 12a of one end opening 12 of the first flow passage 11 and the opposing outer peripheral surface 21 of the insertion portion of the second member 2 so as to prevent fluid from leaking from a gap formed between these opposing surfaces. In Fig. 1, a case where the packing 22 is integrally disposed on the outer peripheral surface 21 of the second member 2 is shown, but the packing 22 may also be integrally disposed on the inner peripheral surface 12a of the one end opening 12 of the first flow passage 11.

[0028] On the extension line of the axis of the one end opening 12 of the first member 1 (the direction in which the second member 2 is displaced relative to the one end opening 12 of the first member 1), i.e., at the portion where the one end opening 12 of the first member 1 is projected in the axial direction, the wall portion of the first flow path 11 of the first member 1 is formed into a movable wall portion 13.

[0029] An installation opening 14 having a circular cross section is formed penetrating inwardly and outwardly in the wall of the first flow passage on an extension line of the one-end opening 12 of the first flow passage 11 of the first member 1 in the axial direction, and a cylindrical support portion 15 protrudes outwardly from the open end of the installation opening 14. An inner circumferential surface 14a of the installation opening 14 and an inner circumferential surface 15a of the cylindrical support portion 15 are formed flush with each other, and the inner circumferential surface 14a of the installation opening 14 and the inner circumferential surface 15a of the cylindrical support portion 15 form a smooth circumferential surface (a circular cross section).

[0030] The movable wall portion 13 is disposed within the installation opening 14 and the cylindrical support portion 15 of the first member 1 so as to be displaceable inward and outward directions (the same direction as the displacement direction of the second member 2 relative to the one-end opening 12 of the first member 1). An outer peripheral surface 13d of the movable wall portion 13 is in sliding contact with an inner peripheral surface 14a of the installation opening 14 and an inner peripheral surface 15a of the cylindrical support portion 15, and a packing 13c such as an O-ring is interposed between the opposing surfaces of the outer peripheral surface 13a of the movable wall portion 13 and the inner peripheral surface 14a of the installation opening 14 and the inner peripheral surface 15a of the cylindrical support portion 15 to prevent fluid from leaking from gaps formed between these opposing surfaces.

[0031] The movable wall portion 13 is arranged within the installation opening 14 and the cylindrical support portion 15 so as to be displaceable in the displacement direction of the second member 2 relative to the one end opening 12 of the first member 1 and so as to be freely rotatable around the axis of the installation opening 14 (cylindrical support portion 15).

[0032] When the movable wall portion 13 is closest to one end opening 12 in the first flow path 11 of the first member 1, the movable wall portion 13 is arranged within the installation opening 14 (cylindrical support portion 15) so that its inner end face is approximately flush with the inner surface of the first flow path 11 of the first member 1, and is configured so as not to impede the flow of fluid within the first flow path 11 of the first member 1.

[0033] The second member 2 and the movable wall portion 13 are connected and integrated by a plurality of pillar portions 6, 6.... Specifically, a plurality of pillar portions 6, 6... are disposed and integrated at predetermined intervals in the circumferential direction of the inner end face of the second member 2 between the inner end face of the second member 2 and the inner end face of the movable wall portion 13 facing thereto, and openings 6a are formed between the pillar portions 6, 6 adjacent to each other in the circumferential direction of the inner end face of the second member 2, and one end opening 12 and the other end opening 16 of the first flow path 11 of the first member are configured to communicate with each other through the openings 6a, 6a.... formed between the pillar portions 6, 6.

[0034] A support protrusion 13a is formed on the outer surface of the movable wall portion 13 in the displacement direction, and a rotation shaft portion 13b is provided on the outer end surface of the support protrusion 13a. The rotation shaft portion 13b of the movable wall portion 13 protrudes outward from the outer opening end of the cylindrical support portion 15 of the first member 1.

[0035] On the other hand, the cap body 3 is attached to the rotating shaft portion 13b of the movable wall portion 13. The cap body 3 has a circular top plate portion 31 having an outer diameter slightly larger than that of the cylindrical support portion 15, and a peripheral wall portion 32 having a constant height protruding from the entire circumference of the outer periphery of the top plate portion 31 toward the second member 2 side. A mounting hole 31a is formed in the center of the top plate portion 31 of the cap body 3, penetrating between both sides and having a diameter slightly larger than that of the rotating shaft portion 13b of the movable wall portion 13, and the mounting hole 31a is rotatably fitted onto the rotating shaft portion 13b of the movable wall portion 13. The nut body 4 is screwed onto the tip portion of the rotating shaft portion 13b, and the opening edge portion of the mounting hole 31a of the cap body 3 is held between the opposing surfaces of the nut body 4 and the supporting protrusion 13a facing it, so that the cap body 3 does not come off the rotating shaft portion 13b. In addition, a washer 5 made of an elastic material is interposed between the opposing surfaces of the nut body 4 and the supporting protrusion 13a facing it. An air hole 31b for releasing air between the cap body 3 and the movable wall portion 13 is formed in the top plate portion 31 of the cap body 3 so as to penetrate between the inner and outer surfaces.

[0036] A screw portion 32a is formed on the inner peripheral surface of the peripheral wall portion 32 of the cap body 3, while a screw portion 15b capable of being screwed into the screw portion 32a of the peripheral wall portion 32 of the cap body 3 is formed on the outer peripheral surface of the cylindrical support portion 15 of the first member 1, and the screw portion 32a of the peripheral wall portion 32 of the cap body 3 is screwed into the screw portion 15b of the cylindrical support portion 15 of the first member 1 so as to be capable of being screwed forward or backward. In this screwed state, a washer 5 made of an elastic body is interposed in the gap between the opposing surfaces of the nut body 4 and the supporting protrusion 13a opposing it, and the cap body 3 is stably disposed without any movement.

[0037] Furthermore, a fixing hole 32b is formed in the peripheral wall portion 32 of the cap body 3, penetrating from its inner to outer circumferential surfaces, and a fixing pin 32c is screwed into this fixing hole 32b so as to be able to move back and forth freely. By screwing the fixing pin 32c forward and pressing the tip of the fixing pin 32c against the outer circumferential surface of the cylindrical support portion 15, the cap body 3 can be fixed to the cylindrical support portion 15 at a predetermined position.

[0038] In the joint member A configured as described above, the one-end opening 12 of the first flow passage 11 of the first member 1, the installation opening 14, and the cylindrical support portion 15 are aligned with each other, and the second member 2, the movable wall portion 13, the rotating shaft portion 13b, and the cap body 3 are integrally arranged so as to be rotatable about these axes. Therefore, the first member 1 is configured so as to be rotatable about the second member 2 and the movable wall portion 13.

[0039] Then, when the cap body 3 is rotated around the rotation axis portion 13b of the movable wall portion 13 and screwed back, and displaced relative to the cylindrical support portion 15 of the first member 1 in a direction away from the one end opening 12 of the first flow path 11 of the first member 1, the opening edge portion of the mounting hole 31a of the cap body 3 displaces the nut body 4 in the displacement direction of the cap body 3, and in conjunction with this displacement of the nut body 4, the movable wall portion 13, the column portion 6 and the second member 2 to which the nut body 4 is screwed are displaced integrally in the same direction as the displacement direction of the cap body 3 (the direction away from the one end opening 12 of the first flow path 11 of the first member 1), thereby shortening the protruding length from the one end opening 12 of the first flow path 11 of the second member 2.

[0040] On the other hand, when the cap body 3 is rotated around the rotation axis portion 13b of the movable wall portion 13 and screwed forward, and displaced relative to the cylindrical support portion 15 of the first member 1 in a direction approaching one end opening 12 of the first flow path 11 of the first member 1, the opening edge portion of the mounting hole 31a of the cap body 3 displaces the support protrusion 13a in the displacement direction of the cap body 3, and in conjunction with the displacement of this support protrusion 13a, the movable wall portion 13, the column portion 6 and the second member 2 from which the support protrusion 13a protrudes are displaced integrally in the same direction as the displacement direction of the cap body 3 (the direction approaching one end opening 12 of the first flow path 11 of the first member 1), thereby lengthening the protruding length from the one end opening 12 of the first flow path 11 of the second member 2.

[0041] As described above, by rotating the cap body 3 to screw it forward or backward and displace it relative to the cylindrical support portion 15 of the first member 1, the second member 2 connected to the cap body 3 via the movable wall portion 13 and the column portion 6 can be displaced relative to one end opening 12 of the first flow path 11 of the first member 1 in conjunction with the cap body 3, and the protruding length of the second member 2 from the one end opening 12 of the first flow path 11 of the first member 1 can be adjusted.

[0042] The second member 2 and the movable wall portion 13 are integrated by a plurality of pillar portions 6 to form one movable member C, the second member 2 is rotatably arranged and supported in the one end opening 12 of the first member 1, and the movable wall portion 13 is rotatably arranged and supported in the installation opening 14 and the cylindrical support portion 15, the second member 2 and the movable wall portion 13 forming both ends of the movable member are stably supported by the one end opening 12, the installation opening 14 and the cylindrical support portion 15 of the first member 1, respectively, and the movable member C is arranged on the first member 1 so as to be rotatable around the axial center (the same axial center) of the one end opening 12, the installation opening 14 and the cylindrical support portion 15 of the first member 1 and displaceable in the axial direction of these axial centers without moving relative to the first member 1. Therefore, the protruding length of the second member 2 relative to the one end opening 12 of the first member 1 can be easily adjusted by a simple operation of rotating the cap body 3.

[0043] The protruding length of the second member 2 relative to the one end opening 12 of the first member 1 can be easily fixed by screwing in the fixing pin 32c and pressing the tip of the fixing pin 32c against the outer peripheral surface of the cylindrical support portion 15.

[0044] On the other hand, even when the protruding length of the second member 2 relative to the one end opening 12 of the first member 1 is fixed, the movable member C is arranged to be freely rotatable relative to the one end opening 12 of the first member 1, the installation opening 14, and the cylindrical support portion 15; in other words, the first member 1 is freely rotatable around the second member 2 and the movable wall portion 13.

[0045] The above-mentioned joint member A is used by connecting pipes to the one end opening 12 and the other end opening 16 of the first flow passage of the first member 1 via general-purpose connectors as necessary.

[0046] Alternatively, two of the above-described joint members A may be prepared, and the other end openings 16, 16 of the first flow paths 11, 11 in the first members 1, 1 of the two joint members A, A may be watertightly connected and communicated with each other. Note that the structure of each of the joint members A is the same as that of the above-described joint member A, so description thereof will be omitted.

[0047] Specifically, as shown in Fig. 5, the other end openings 16, 16 of the first flow passages 11, 11 in the first members 1, 1 of the joint members A, A are overlapped with their end faces 16b, 16b facing each other, and the other end openings 16, 16 of the first flow passages 11, 11 are watertightly connected and communicated with each other using general-purpose fasteners 7, 7 such as bolts to form the joint member A'. Note that, hereinafter, for convenience, in the joint member A' in Fig. 5, the right joint member A is referred to as the first joint member A1, and the left joint member A is referred to as the second joint member A2.

[0048] The first joint member A1 and the second joint member A2 are connected and integrated in a state in which the opening directions of the one-end openings 12, 12 of the first flow passages 11, 11 in the first members 1, 1 of the first joint member A1 and the second joint member A2 (the displacement direction of the second member 2, 2 relative to the one-end openings 12, 12 of the first flow passages 11, 11 of the first member 1, 1) are shifted from each other by 90°. Note that the shift angle of the opening directions of the one-end openings 12, 12 of the first flow passages 11, 11 in the first members 1, 1 of the first joint member A1 and the second joint member A2 does not need to be 90°, and it is sufficient that the opening directions of the one-end openings 12, 12 of the first flow passages 11, 11 in the first members 1, 1 of the first joint member A1 and the second joint member A2 intersect with each other.

[0049] In the joint part A' in FIG. 5, an end opening 12 of the first member 1 of the first joint part A1 opens downward in FIG. 5, and an end opening 12 of the first member 1 of the other, second joint part A2 opens perpendicular to the page and toward the viewer in FIG. 5.

[0050] In this way, in the first joint member A1 and the second joint member A2, by making the opening directions of the one-end openings 12, 12 of the first flow paths 11, 11 of the first members 1, 1 cross (different), the protruding length of the second member 2 from the one-end opening 12 of the first flow path 11 can be adjusted in two directions, and the arrangement position of the pipe connected to the joint member A' can be adjusted two-dimensionally to easily arrange the pipe in the desired position.

[0051] Next, a description will be given of a method for constructing a fire hydrant system in which a water supply pipe and a fire hydrant storage box B are connected using a connecting pipe having the above-mentioned joint member A interposed therebetween.

[0052] 6, the fire hydrant system includes a fire hydrant storage box B installed on the inner wall W of a building, a fire hose (not shown) stored in the fire hydrant storage box B, a nozzle (not shown) connected to the end of the fire hose, a fire hydrant valve 8 disposed in the fire hydrant storage box B, a water supply pipe (not shown) disposed outside (e.g., behind or above) the fire hydrant storage box B, and a connecting pipe 9 connecting the water supply pipe and the fire hydrant valve 8. The base end of the fire hose is connected to the outlet of the fire hydrant valve 8 via a connecting part as necessary.

[0053] A rectangular storage box installation space W1 capable of storing a fire hydrant storage box B is formed in the interior wall W of the building, and the fire hydrant storage box B is stored and installed in this storage box installation space W1 from the front side. Furthermore, a water supply pipe is installed above or behind the space of the interior wall W in which the storage box installation space W1 is provided.

[0054] The base end of a connecting pipe 9 is connected and communicated with the water supply pipe, while a fire hydrant valve 8 is disposed and integrated at the tip of the connecting pipe 9, and fire water supplied from the water supply pipe is supplied to the fire hydrant valve 8 through the connecting pipe 9. The fire hydrant valve 8 is stored and disposed in the fire hydrant storage box B through a fire hydrant valve insertion hole B11 formed in the rear wall panel B1 of the fire hydrant storage box B.

[0055] As shown in Figures 6 and 7, joint members A and A' are interposed in the connecting pipe 9. Figures 6 and 7 show the case where two joint members are interposed in the connecting pipe 9, but one joint member or three or more joint members may be interposed.

[0056] 6 and 7, the joint member A' of Fig. 5 is interposed on the water supply pipe side, and the joint member A of Fig. 1 is interposed on the fire hydrant valve 8 side. In detail, the connecting pipe 9 has a first connecting pipe 91 arranged on the water supply pipe side and a second connecting pipe 92 arranged on the fire hydrant valve 8 side, and the first connecting pipe 91 and the second connecting pipe 92 are connected and communicated via the joint member A', and the second connecting pipe 92 and the fire hydrant valve 8 are connected and communicated via the joint member A.

[0057] In detail, the joint member A' is arranged such that, in the second joint member A2, the displacement direction of the second member 2 relative to the one end opening 12 of the first flow passage 11 of the first member 1 is horizontal (left-right direction in FIG. 6), and, in the first joint member A1, the displacement direction of the second member 2 relative to the one end opening 12 of the first flow passage 11 of the first member 1 is vertical.

[0058] The joint member A is disposed so that the displacement direction of the second member 2 relative to one end opening 12 of the first flow passage 11 of the first member 1 is horizontal (front-rear direction in FIG. 6, left-right direction in FIG. 7).

[0059] The opening end of the first connecting pipe 91 on the fire hydrant valve 8 side is connected to the connection portion 24 of the second member 2 in the second joint member A2 of the joint member A', and is connected and communicated with the first flow path 11 of the first member 1 of the second joint member A2.

[0060] On the other hand, the open end of the second connecting pipe 92 on the water supply pipe side is connected to the connection portion 24 of the second member 2 in the first joint member A1 of the joint member A', and is connected and communicates with the first flow path 11 of the first member 1 of the first joint member A1.

[0061] Therefore, the first connecting pipe 91 and the second connecting pipe 92 are connected in a connected and communicated state via the first flow paths 11, 11 of the first joint member A1 and the second joint member A2 of the joint member A' and the second flow paths 23, 23 of the second members 2, 2.

[0062] Furthermore, the open end of the second connecting pipe 92 on the side of the fire hydrant valve 8 is connected to the connecting portion 16a of the other end opening 16 of the first member 1 of the joint member A, and the fire hydrant valve 8 is connected to the connecting portion 24 of the second member 2 of the joint member A, and the second connecting pipe 92 and the fire hydrant valve 8 are connected in a connected and communicated state via the first flow path 11 of the first member 1 of the joint member A and the second flow path 23 of the second member 2. The fire hydrant valve 8 is connected to the connecting portion 24 of the second member 2, which is disposed in a state in which the displacement direction of the second member relative to the one end opening 12 of the first member 1 is directed in a substantially horizontal direction.

[0063] As described above, the water supply pipe and the fire hydrant valve 8 are connected and communicated by the connecting pipe 9 with the joint members A', A interposed therein, and fire water supplied from the water supply pipe can be supplied to the fire hydrant valve 8 through the connecting pipe 9 and the joint members A', A interposed therein (branch pipe connecting process).

[0064] Thereafter, the fire hydrant valve 8 arranged at the tip of the connecting pipe 9 is closed, and a water pressure test is performed by filling the connecting pipe 9 with water through the water supply pipe to check for any leakage in the connecting pipe 9 (water pressure test process).

[0065] Next, the fire hydrant storage box B is arranged in the storage box installation space W1 formed in the inner wall W of the building, but due to other construction processes of the building, it may take some time for the fire hydrant storage box B to be installed in the storage box installation space W1 after the completion of the above-mentioned water pressure test process.

[0066] In such a case, if the connecting pipe 9 is arranged toward the inside of the storage box installation space W1, it may interfere with other construction processes, or there is a risk that the connecting pipe 9 will be damaged if a worker or a work tool used by the worker collides with it.

[0067] Therefore, by rotating the first member 1 of the second joint member A2 of the joint member A' interposed in the connecting pipe 9 around the second member 2 and the movable wall portion 13, the second connecting pipe 92 and the fire hydrant valve 8 attached to the tip of the second connecting pipe 92 can be retracted upward, thereby preventing damage to the connecting pipe 9 and the fire hydrant valve 8. In the joint members A and A', even in a state in which the protruding length of the second member 2 from the one-end opening 12 of the first member 1 is fixed, the first member 1 can be rotated around the second member 2 and the movable wall portion 13, so that the above operation can be easily performed. In FIG. 7, the second connecting pipe 92 retracted upward and the fire hydrant valve 8 attached to the tip of the second connecting pipe 92 are shown by dotted lines.

[0068] Although the connecting pipe 9 is filled with water, the joint members A, A' can smoothly carry out relative displacement between the first member 1 and the second member 2 and the movable wall portion 13 in the joint members A, A', despite the water pressure filling the connecting pipe 9, and the connecting pipe 9 can be easily retracted from the storage box installation space W1.

[0069] Furthermore, a working space can be easily secured in a narrow space within the inner wall of a building, and construction work can be carried out smoothly.

[0070] Then, after the fire hydrant storage box B is arranged in the storage box installation space W1, the first member 1 of the second joint member A2 of the joint member A' is rotated around the second member 2 and the movable wall portion 13, thereby returning the second connecting pipe 92, which has been retracted upward, and the fire hydrant valve 8 attached to the tip of this second connecting pipe 92 to a downward position without changing the position of the first connecting pipe 91, and the fire hydrant valve 8 is inserted into the fire hydrant valve insertion hole B11 of the fire hydrant storage box B and arranged in the fire hydrant storage box B (fire hydrant valve arrangement process) (see Figure 7).

[0071] On the other hand, the position of the fire hydrant storage box B arranged in the storage box installation space W1 may shift horizontally, vertically, and / or front-to-back from the originally planned installation position, and as a result, the position of the fire hydrant valve insertion hole B11 formed in the wall panel of the fire hydrant storage box B may shift from the planned installation position L0 to the changed installation position L1.

[0072] In such a case, in any of the coupling members A, A' interposed in the connecting pipe 9, the cap body 3 can be screwed in or out relative to the cylindrical support portion 15 to adjust and fix the protruding length of the second member 2 from the one end opening 12 of the first flow path 11 of the first member 1, thereby absorbing the positional deviation of the fire hydrant valve insertion hole B11 from the planned installation position L0 to the changed installation position L1.

[0073] 6, in the first joint member A1 of the joint member A', the fixing pin 32c of the cap body 3 is screwed back into the fixing hole 32b to separate the tip of the fixing pin 21c from the cylindrical support portion 15, so that the cap body 3 can be screwed forward or backward with respect to the cylindrical support portion 15. Thereafter, the cap body 3 is screwed forward or backward with respect to the cylindrical support portion 15 to adjust the protruding length of the second member 2 from the one end opening 12 of the first flow path 11 of the first member 1, and then the fixing pin 32c of the cap body 3 is screwed back into the fixing hole 32b to be pressed against the outer circumferential surface of the cylindrical support portion 15 to fix the cap body 3 in an immovable state with respect to the cylindrical support portion 15, thereby fixing the protruding length of the second member 2 from the one end opening 12 of the first flow path 11 of the first member 1.

[0074] Adjustment of the left-right position in Figure 6 can be performed in the same manner as described above by screwing the cap body 3 in or out of the cylindrical support portion 15 of the second joint member A2 of the joint member A' to adjust and fix the protruding length of the second member 2 from the one-end opening 12 of the first flow passage 11 of the first member 1.

[0075] Adjustment of the left-right position in Figure 7 can be performed in the same manner as described above by screwing the cap body 3 in the coupling member A forward or backward relative to the cylindrical support portion 15, thereby adjusting and fixing the protruding length of the second member 2 from the one end opening 12 of the first flow path 11 of the first member 1.

[0076] In this way, by adjusting the protruding length of the second member 2 from one end opening 12 of the first flow path 11 of the first member 1 in any of the coupling members A, A' interposed in the connecting pipe 9, the up-down, left-right and front-to-back positions of the fire hydrant valve 8 attached to the tip of the connecting pipe 9 can be accurately and easily adjusted.

[0077] In this way, the positional deviation of the fire hydrant valve insertion hole B11 from the planned installation position L0 to the changed installation position L1 can be absorbed, and the fire hydrant valve 8 can be installed in the correct position within the fire hydrant valve insertion hole B11.

[0078] Then, the base end of a fire hose can be connected in a watertight communication state to the outlet of the fire hydrant valve 8 via a connection part as necessary, thereby completing the installation of the fire hydrant system.

[0079] The number and type of joint members (joint members A or A') interposed in the connecting pipe 9 are not limited to those shown in Figures 6 and 7, and may be changed as appropriate depending on the installation location of the fire hydrant equipment.

[0080] For example, as shown in Figures 8 and 9, in the second joint member A2 of the joint member A', the displacement direction of the second member 2 relative to the one end opening 12 of the first flow passage 11 of the first member 1 may be arranged to be the left-right direction in Figure 9. Since the other configurations are similar, the same reference numerals are used and the description will be omitted.

[0081] According to the connecting pipe 9 shown in Figures 8 and 9, the forward / backward position adjustment relative to the fire hydrant storage box B can be performed by the second joint member A2 of the upper joint member A' and the lower joint member A, and the allowable range of the forward / backward position adjustment relative to the fire hydrant storage box B can be expanded.

[0082] Furthermore, to address misalignment of the fire hydrant valve insertion hole B11 of the fire hydrant storage box B, the first member 1 is rotated about the second member 2 and the movable wall portion 13 in the second joint member A2 of the joint member A', and also the first member 1 is rotated about the second member 2 and the movable wall portion 13 in the joint member A, thereby adjusting the misalignment of the installation position in the left-right direction while keeping the fire hydrant valve 8 in the correct posture. In addition, in Figure 9, the planned installation position L0 of the fire hydrant valve insertion hole B11 is shown on the left side, and the changed installation position L1 is shown on the right side. [Explanation of symbols]

[0083] 1 First member 2 Second member 3 Cap body 4 Nut body 5 Washers 6 Pillar section 8. Fire hydrant valve 9 Connecting Pipe 91 First connecting pipe 92 Second connecting pipe 11 First flow path 12 One end opening 13 Movable wall section 13a Support protrusion 13b Rotating shaft 14 Installation opening 15 Cylindrical support 16 Other end opening 23 Second Channel 31 Top plate 31a Mounting hole 32 Peripheral wall part 32a Screw part 32b Fixing hole 32c Fixed pin A, A' joint parts A1 First joint member A2 Second joint member B Fire hydrant storage box B11 Fire hydrant valve insertion hole L0 planned installation location L1 change location W Inner wall W1 Storage box installation space

Claims

1. a first member in which a first flow path having openings at both ends is formed, the opening at one end and the opening at the other end of the first flow path are opened in directions intersecting each other, and a connecting portion for connecting another pipe body is formed on an inner or outer peripheral surface of the opening at the other end of the first flow path; a second member having a second flow passage disposed at one end opening of the first flow passage of the first member and having openings at both ends; The first flow path and the second flow path are in communication with each other, the second member is disposed so as to be rotatable about an axis of the one end opening of the first flow path and displaceable in an axial direction of the one end opening of the first flow path of the first member and so as to be fixable at an arbitrary position; An opening for installation is formed on an extension line of an axial center of the opening at one end of the first flow passage of the first member, a movable member having the second member and a movable wall portion integrally connected to the second member and disposed within the mounting opening, one end of the second member protrudes from one end opening of the first flow path of the first member, and a connection portion for connecting another pipe body is formed at the one end opening of the second member, In a state in which a protruding length of the second member with respect to one end opening of the first member is fixed, the first member is rotatable about the second member and the movable wall portion, a coupling member configured to adjust the protruding length of one end of the second member from the one end opening of the first flow path of the first member, by displacing the movable wall portion of the movable member in a direction toward or away from the one end opening of the first flow path of the first member by sliding its outer circumferential surface against the inner circumferential surface of the installation opening, and by interlocking the second member of the movable member with the one end opening of the first flow path of the first member, the outer circumferential surface of a portion of the second member that is arranged in the one end opening of the first flow path of the first member is displaced at the one end opening of the first flow path while sliding the outer circumferential surface of the portion of the second member that is arranged in the one end opening of the first flow path of the first member against the inner circumferential surface of the one end opening of the first flow path, thereby adjusting the protruding length of one end of the second member from the one end opening of the first flow path of the first member,

2. A cylindrical support portion is provided outwardly at an open end of the installation opening, A rotating shaft is formed on the outer surface of the movable wall, and a cap body is rotatably fitted and integrated onto the rotating shaft, The coupling member according to claim 1, characterized in that a screw portion formed on the cap body is screwed into a screw portion formed on an outer peripheral surface of the cylindrical support portion so as to be freely advanced and retreated, and the cap body is screwed forward or backward relative to the cylindrical support portion, thereby displacing the second member in conjunction with the movable wall portion.

3. As the first joint member and the second joint member A first member having a first flow passage formed therein and having openings at both ends; a second member having a second flow passage disposed at one end opening of the first flow passage of the first member and having openings at both ends; The first flow path and the second flow path are in communication with each other, the second member has a coupling member arranged so as to be rotatable about an axis of the one end opening of the first flow passage, displaceable in an axial direction of the one end opening of the first member, and fixable at an arbitrary position; a coupling member characterized in that other end openings of first flow paths of the first coupling member and the second coupling member are connected and communicated with each other in a state in which a relative displacement direction of the second member with respect to the first member in the first coupling member and a relative displacement direction of the second member with respect to the first member in the second coupling member intersect with each other.

4. a fire hydrant storage box that is installed in a storage box installation space on an inner wall of a building and stores a fire hose therein, and has a fire hydrant valve insertion hole formed in a wall panel through which a fire hydrant valve can be inserted; A water supply pipe arranged outside the fire hydrant storage box; A fire hydrant system including a fire hydrant valve disposed in the fire hydrant storage box and a connecting pipe connecting the water supply pipe, The connecting pipe is provided with a joint member, The above joint member is a first member in which a first flow path having openings at both ends is formed, the opening at one end and the opening at the other end of the first flow path are opened in directions intersecting each other, and a connecting portion for connecting another pipe body is formed on an inner or outer peripheral surface of the opening at the other end of the first flow path; a second member having a second flow passage disposed at one end opening of the first flow passage of the first member and having openings at both ends; The first flow path and the second flow path are in communication with each other, the second member is disposed so as to be rotatable about an axis of the one end opening of the first flow path and displaceable in an axial direction of the one end opening of the first flow path of the first member and so as to be fixable at an arbitrary position; An opening for installation is formed on an extension line of an axial center of the opening at one end of the first flow passage of the first member, a movable member having the second member and a movable wall portion integrally connected to the second member and disposed within the mounting opening, one end of the second member protrudes from one end opening of the first flow path of the first member, and a connection portion for connecting another pipe body is formed at the one end opening of the second member, In a state in which a protruding length of the second member with respect to one end opening of the first member is fixed, the first member is rotatable about the second member and the movable wall portion, The fire hydrant equipment is characterized in that the movable wall portion of the movable member is displaced in a direction toward or away from the one-end opening of the first flow path of the first member by sliding its outer circumferential surface against the inner circumferential surface of the installation opening, thereby interlocking the second member of the movable member to displace the second member at the one-end opening of the first flow path of the first member while sliding the outer circumferential surface of a portion of the second member that is arranged within the one-end opening of the first flow path of the first member at the one-end opening of the first flow path against the inner circumferential surface of the one-end opening of the first flow path, thereby making it possible to adjust the protruding length of one end of the second member from the one-end opening of the first flow path of the first member.

5. A fire hydrant storage box is installed in a storage box installation space on an inner wall of a building, a fire hose is stored therein, and a fire hydrant valve insertion hole through which a fire hydrant valve can be inserted is formed in a wall plate, and a connection pipe connects the fire hydrant storage box to a water supply pipe that is piped outside the fire hydrant storage box, The connecting pipe is provided with a joint member, The above joint member is a first member in which a first flow path having openings at both ends is formed, the opening at one end and the opening at the other end of the first flow path are opened in directions intersecting each other, and a connecting portion for connecting another pipe body is formed on an inner or outer peripheral surface of the opening at the other end of the first flow path; a second member having a second flow passage disposed at one end opening of the first flow passage of the first member and having openings at both ends; The first flow path and the second flow path are in communication with each other, the second member is disposed so as to be rotatable about an axis of the one end opening of the first flow path and displaceable in an axial direction of the one end opening of the first flow path of the first member and so as to be fixable at an arbitrary position; An opening for installation is formed on an extension line of an axial center of the opening at one end of the first flow passage of the first member, a movable member having the second member and a movable wall portion integrally connected to the second member and disposed within the mounting opening, one end of the second member protrudes from one end opening of the first flow path of the first member, and a connection portion for connecting another pipe body is formed at the one end opening of the second member, In a state in which a protruding length of the second member with respect to one end opening of the first member is fixed, the first member is rotatable about the second member and the movable wall portion, a connecting pipe configured to adjust the protruding length of one end of the second member from the one end opening of the first flow path of the first member by displacing the movable wall portion of the movable member in a direction toward or away from the one end opening of the first flow path of the first member with its outer peripheral surface in sliding contact with the inner peripheral surface of the installation opening, thereby interlocking the second member of the movable member and displacing it at the one end opening of the first flow path while causing the outer peripheral surface of the portion of the second member that is arranged in the one end opening of the first flow path of the first member to slide against the inner peripheral surface of the one end opening of the first flow path,

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