Sprinkler fire extinguishing pipes

Abstract

To provide a fire extinguishing pipe for sprinklers that can improve work efficiency at construction sites. [Solution] The sprinkler fire extinguishing pipe 1 comprises a resin pipe 2 that has a tendency to curl, a head fitting 3 attached to the end of the resin pipe 2 and to which a sprinkler head 4 can be attached, and a cylindrical guide member 5 into which the tip portion of the resin pipe 2 is inserted.

Description

Technical Field

[0001] The present invention relates to a fire-fighting pipe for a sprinkler.

Background Art

[0002] Conventionally, sprinklers for fire extinguishing have been installed in buildings. The sprinkler includes a sprinkler head installed on the ceiling of a fire protection target and a fire-fighting pipe connected to the sprinkler head. And, at the time of a fire, the sprinkler head discharges water supplied from the fire-fighting pipe. For example, Patent Document 1 discloses a sprinkler including a fire-fighting pipe having a synthetic resin pipe and a joint attached to the tip of the synthetic resin pipe, and a sprinkler head attached to the tip of the joint.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in a building, the installation position of the sprinkler head is predetermined. Therefore, the joint to which the sprinkler head is attached needs to be installed in accordance with the installation position of the sprinkler head. Here, when a resin pipe is transported from a factory or the like to a construction site in a state of being spirally wound, the resin pipe delivered to the construction site may have a winding mark. If the resin pipe has a winding mark, when installing the joint at the installation position of the sprinkler head at the construction site, it is necessary to stretch or bend the resin pipe with the winding mark, so there is a problem of poor workability.

[0005] This invention has been made in view of the above, and its objective is to provide a fire extinguishing pipe for sprinklers that can improve work efficiency at construction sites. [Means for solving the problem]

[0006] To achieve the above objective, the present invention provides a fire extinguishing pipe for sprinklers, comprising: a resin pipe having a tendency to coil; a head fitting attached to the end of the resin pipe and to which a sprinkler head can be attached; and a cylindrical guide member into which the tip portion of the resin pipe is inserted.

[0007] According to the present invention configured in this way, since the tip portion of the resin pipe is inserted into the guide member, the tendency of the tip portion to curl is suppressed. As a result, the effect of the curling of the resin pipe is less likely to occur when installing the head fitting at the construction site. Therefore, it is possible to provide a sprinkler fire extinguishing piping system that improves workability at the construction site.

[0008] In the present invention, the guide member is preferably made of a resin material.

[0009] According to the present invention configured in this way, since the guide member is made of resin material, the guide member can be made lighter compared to, for example, the case where it is made of metal material.

[0010] In the present invention, preferably, the guide member is configured to be supported at at least two points.

[0011] According to the present invention configured in this way, the guide member is supported at at least two points, so that the guide member can be reliably supported.

[0012] Preferably, the present invention further includes at least one of a first height adjustment section capable of adjusting the height of the head joint and a second height adjustment section capable of adjusting the height of the guide member.

[0013] With the present invention configured in this way, it is possible to adjust the height of at least one of the head joint and the guide member. This makes it easier to ensure the head joint is horizontal when installing sprinkler fire extinguishing piping. Therefore, the sprinkler head attached to the end of the head joint can be installed in the correct position.

[0014] In the present invention, preferably, the head joint is an elbow joint, and further comprises a rotation restricting portion capable of restricting the rotation of the elbow joint.

[0015] With the present invention configured in this way, the rotation restricting part can restrict the rotation of the elbow joint. This prevents the sprinkler head attached to the end of the elbow joint from being installed at an angle. [Effects of the Invention]

[0016] According to the present invention, it is possible to provide a fire extinguishing pipe for sprinklers that improves workability at construction sites. [Brief explanation of the drawing]

[0017] [Figure 1] This is a perspective view showing a sprinkler fire extinguishing pipe according to Embodiment 1 of the present invention installed in the ceiling space of a building. [Figure 2] (a) is a schematic cross-sectional view along line AA in Figure 1, (b) is a schematic cross-sectional view along line BB in Figure 2(a), and (c) is a schematic cross-sectional view along line CC in Figure 1. [Figure 3] This is a perspective view showing a sprinkler fire extinguishing pipe according to Embodiment 2 of the present invention installed in the ceiling space of a building. [Figure 4] (a) is a diagram showing the third fixing part in a folded state, (b) is a diagram showing the tip portion of the guide member, and (c) is a perspective view showing the third fixing part in an unfolded state fixed to the first and second furring strip supports. [Figure 5]It is a perspective view showing a state where the fire extinguishing pipe for sprinklers according to Embodiment 3 of the present invention is installed in the ceiling space of a building. [Figure 6] (a) is a view showing the fire extinguishing pipe for sprinklers according to Embodiment 3 of the present invention, and (b) is a view showing a state where a fifth angle bar and a sixth angle bar are attached to the fire extinguishing pipe for sprinklers according to Embodiment 3 of the present invention. [Figure 7] It is a perspective view showing a state where the fire extinguishing pipe for sprinklers according to Embodiment 4 of the present invention is installed in the ceiling space of a building. [Figure 8] It is a perspective view showing a state where the fire extinguishing pipe for sprinklers according to Embodiment 5 of the present invention is installed in the ceiling space of a building. [Figure 9] (a) is a schematic cross-sectional view taken along line D-D of FIG. 8, (b) is a view showing a configuration for adjusting the height of the sixth saddle band, and (c) is a schematic cross-sectional view taken along line E-E of FIG. 8.

Mode for Carrying Out the Invention

[0018] Hereinafter, embodiments of the present invention will be described in detail based on the drawings. Note that the following description of the preferred embodiments is merely illustrative in nature.

[0019] 《Embodiment 1》 FIG. 1 shows a fire extinguishing pipe 1 for sprinklers according to Embodiment 1 of the present invention. The fire extinguishing pipe 1 for sprinklers is a pipe for supplying water to a sprinkler head 4, and includes a resin pipe 2, a head joint 3, and a guide member 5. In this embodiment, the upstream side in the water flow direction in the fire extinguishing pipe 1 for sprinklers will be described as the base end side, and the downstream side in the water flow direction will be described as the tip end side.

[0020] The resin pipe 2 has flexibility and is made of a resin material having incombustibility or flame retardancy (for example, cross-linked polyethylene, polybutene, etc.).

[0021] The head joint 3 is an elbow joint having a tip portion 3a and a base portion 3b, the base portion being attached to the tip of the resin pipe 2. In this embodiment, the resin pipe 2 and the head joint 3 are connected by electrofusion bonding.

[0022] Furthermore, a sprinkler head 4 can be attached to the tip of the head joint 3. In this embodiment, the head joint 3 and the sprinkler head 4 are connected by screwing them together.

[0023] The guide member 5 is cylindrical in shape, and the tip portion of the resin pipe 2 is inserted into it. The guide member 5 is made of a resin material that is non-combustible or flame-retardant.

[0024] Furthermore, the guide member 5 has higher rigidity than the resin pipe 2. In other words, the guide member 5 has lower flexibility than the resin pipe 2. In this embodiment, the resin pipe 2 is transported from the factory or other location to the construction site (for example, the ceiling space S1 in Figure 1) with the guide member 5 attached. The resin pipe 2 delivered to the construction site does not have a curl at the tip portion inserted into the guide member 5, but the remaining portion (the portion not inserted into the guide member 5) has a curl because it was transported from the factory or other location to the construction site in a spiral shape. In other words, the guide member 5 functions as a restricting member that prevents the tip portion of the resin pipe 2 from curling. For example, it is preferable that the longitudinal dimension of the guide member 5 be set to 0.3m to 1.4m.

[0025] In this embodiment, the resin pipe 2 is connected at its base end (upstream side) to a water source (not shown) and receives water from the water source (not shown). Therefore, in the event of a fire, water is supplied from the water source (not shown) to the sprinkler head 4 via the resin pipe 2 and the head fitting 3, and water is released from the sprinkler head 4.

[0026] Furthermore, the sprinkler fire extinguishing pipe 1 is installed in the ceiling space S1 of the building. In this ceiling space S1, a first joist support 21 and a second joist support 22 are suspended from the underside of the upper floor (not shown) using ceiling suspension brackets (not shown). The first joist support 21 and the second joist support 22 are arranged parallel to each other with a predetermined distance between them, in a position where their respective longitudinal directions extend horizontally.

[0027] Furthermore, multiple furring strips 23 are attached to the lower parts of the first furring strip support 21 and the second furring strip support 22. Each furring strip 23 is arranged parallel to the others at a predetermined distance apart, with its longitudinal direction extending horizontally. Moreover, the longitudinal direction of the first furring strip support 21 and the second furring strip support 22 is perpendicular to the longitudinal direction of the furring strips 23.

[0028] A ceiling board 24 is fixed to the lower part of multiple ceiling joists 23. In this embodiment, a ceiling space S1 is formed above the ceiling board 24, and a room S2 is formed below the ceiling board 24.

[0029] Furthermore, the ceiling board 24 is provided with through-holes 25 formed in the thickness direction. The space above the ceiling S1 and the room S2 are in communication through these through-holes 25.

[0030] A first corner bar 26 and a second corner bar 27 are provided above the first and second joist supports 21 and 22, respectively. One end of each of the first and second corner bars 26 and 27 is fixed to the first joist support 21 using a fixing bracket 28, and the other end is fixed to the second joist support 22 using a fixing bracket 28. In this embodiment, the first and second corner bars 26 and 27 are arranged parallel to each other with a predetermined distance between them, with their respective longitudinal directions extending horizontally.

[0031] A first fixing part 29 is fixed to the longitudinal center portion of the first corner bar 26. A second fixing part 30 is fixed to the portion of the second corner bar 27 corresponding to the first fixing part 29, that is, to the longitudinal center portion of the second corner bar 27.

[0032] As shown in Figure 2(a), the first fixing portion 29 is configured to fix the tip portion of the guide member 5 to the first corner bar 26.

[0033] Furthermore, the first fixing portion 29 includes a first base portion 31, a first saddle band 32, and a second saddle band 33.

[0034] The first base portion 31 is roughly L-shaped and is fixed to the first corner bar 26.

[0035] The first saddle band 32 includes a first retaining portion 32a that holds the tip portion 3a of the head joint 3. The first saddle band 32 is attached to the first base portion 31. This restricts the rotation of the head joint 3 around the central axis of the head joint 3, which coincides with the central axis of the resin pipe 2, that is, around the central axis of the base portion 3b of the head joint 3. In this embodiment, the first saddle band 32 is mounted to the first base portion 31 so as to be slidable in the vertical direction.

[0036] The second saddle band 33 is a support for supporting the tip portion of the guide member 5. The second saddle band 33 also has a second retaining portion 33a that holds the tip portion of the guide member 5. Furthermore, the second saddle band 33 is attached to the first base portion 31 in a height-adjustable manner. As shown in Figure 2(b), the second saddle band 33 has a second retaining portion 33a at one end and a first threaded portion 33b at one end. The first threaded portion 33b is screwed into a first threaded hole portion 31a provided in the first base portion 31 to constitute a first thread adjustment mechanism 34. Furthermore, by rotating the first threaded portion 33b of the second saddle band 33 relative to the first threaded hole portion 31a of the first base portion 31, the height (vertical position) of the guide member 5 held by the second saddle band 33 can be adjusted by screwing the first screw adjustment mechanism 34 forward or backward. In this embodiment, the second saddle band 33 is a one-touch type saddle band. For example, the second retaining portion 33a of the second saddle band 33 is configured in a bifurcated shape. When the guide member 5 is pushed into the second retaining portion 33a from above, the bifurcated second retaining portion 33a closes, and the guide member 5 is held in the second retaining portion 33a.

[0037] As shown in Figure 2(c), the second fixing portion 30 is configured to fix the base end portion of the guide member 5 to the second corner bar 27.

[0038] Furthermore, the second fixing portion 30 includes a second base portion 35 and a third saddle band 36.

[0039] The second base portion 35 is rectangular in shape and is fixed to the second corner bar 27 using the first wing nut 37. In addition, the first bolt 38 and the second bolt 39 are provided on the upper surface of the second base portion 35 at a predetermined distance from each other.

[0040] The first bolt 38 comprises a first head portion 38a and a first shaft portion 38b having screw threads on its outer surface. The first bolt 38 is fixed to the upper surface of the second base portion 35 with its extension direction facing vertically.

[0041] The second bolt 39 comprises a second head portion 39a and a second shaft portion 39b having screw threads on its outer surface. The second bolt 39 is fixed to the upper surface of the second base portion 35 with its extension direction facing vertically.

[0042] The third saddle band 36 is a support for supporting the base end portion of the guide member 5. The third saddle band 36 comprises a support plate 36a which is rectangular in shape and whose longitudinal dimension is smaller than that of the second base portion 35, and a third holding portion 36b which is provided on the upper surface and longitudinal center portion of the support plate 36a for holding the guide member 5. In this embodiment, the third saddle band 36 is made of a one-touch type saddle band.

[0043] Furthermore, the support plate 36a is provided with a pair of first through holes 36c formed through it in the thickness direction. The pair of first through holes 36c are provided at a predetermined distance from each other. The first shaft portion 38b of the first bolt 38 is inserted through one of the first through holes 36c. The second shaft portion 39b of the second bolt 39 is inserted through the other first through hole 36c.

[0044] A first upper nut 40 is screwed onto the upper part of the support plate 36a on the first shaft portion 38b. A first lower nut 41 is screwed onto the lower part of the support plate 36a on the first shaft portion 38b. The first shaft portion 38b and the first lower nut 41 that screws onto the first shaft portion 38b constitute the second screw adjustment mechanism 42.

[0045] A second upper nut 43 is screwed onto the upper part of the support plate 36a on the second shaft portion 39b. A second lower nut 44 is screwed onto the lower part of the support plate 36a on the second shaft portion 39b. The second shaft portion 39b and the second lower nut 44 that screws onto the second shaft portion 39b constitute the third screw adjustment mechanism 45.

[0046] By rotating the first lower nut 41 relative to the first shaft portion 38b, the second screw adjustment mechanism 42 is screwed in or out, and by rotating the second lower nut 44 relative to the second shaft portion 39b, the third screw adjustment mechanism 45 is screwed in or out, thereby allowing the height (vertical position) of the support plate 36a to be adjusted. Here, since the guide member 5 is fixed to the third holding portion 36b which is integrated with the support plate 36a, the height (vertical position) of the guide member 5 can be adjusted by adjusting the height of the support plate 36a.

[0047] Next, a method for installing the sprinkler fire extinguishing pipe 1 according to Embodiment 1 will be described.

[0048] First, at the construction site, the first corner bar 26 equipped with the first fixing part 29 and the second corner bar 27 equipped with the second fixing part 30 are fixed to the first and second ceiling joist supports 21 and 22. Then, the sprinkler fire extinguishing piping 1 (resin pipe 2, head fitting 3, and guide member 5) delivered from the factory or other location to the construction site (for example, the ceiling space S1 in Figure 1) is fixed to the first fixing part 29 and the second fixing part 30 to complete the installation. More specifically, the head fitting 3 is fixed to the first saddle band 32, and the guide member 5 is fixed to the second saddle band 33 and the third saddle band 36 to complete the installation of the sprinkler fire extinguishing piping 1.

[0049] Subsequently, a sprinkler head 4 is attached to the tip of the head fitting 3.

[0050] As described above, according to this embodiment, since the tip portion of the resin pipe 2 is inserted into the guide member 5, the tendency of the tip portion to curl is suppressed. This makes it less likely for the resin pipe 2 to be affected when installing the head joint 3 at the construction site. Therefore, a sprinkler fire extinguishing pipe 1 with improved workability at the construction site can be provided.

[0051] Furthermore, since the guide member 5 is made of resin, it can be made lighter compared to, for example, a guide member 5 made of metal.

[0052] Furthermore, since the guide member 5 is supported at at least two points, the guide member 5 can be reliably supported.

[0053] Furthermore, the height of the guide member 5 can be adjusted. This makes it easier to ensure the head fitting 3 is level when installing the sprinkler fire extinguishing pipe 1. Therefore, the sprinkler head 4 attached to the tip of the head fitting 3 can be installed in the correct position.

[0054] Furthermore, the first saddle band 32 restricts the rotation of the head joint 3. This prevents the sprinkler head 4, which is attached to the tip of the head joint 3, from being installed at an angle.

[0055] Embodiment 2 Next, Embodiment 2 of the present invention will be described using Figures 3 and 4. In Embodiment 2, the focus will be on the differences from Embodiment 1.

[0056] In Embodiment 2, a third fixing part 51 is provided in place of the first fixing part 29 and the second fixing part 30 of Embodiment 1.

[0057] The third fixing part 51 includes a third corner bar 52, a fourth corner bar 53, a third base part 54, a fourth saddle band 55, and a fifth saddle band 56.

[0058] The third corner bar 52 is positioned such that its longitudinal direction is perpendicular to the longitudinal directions of the first and second furring joist supports 21 and 22. Furthermore, one end of the third corner bar 52 in the longitudinal direction is fixed to the first furring joist support 21 by a fixing bracket 28, and the other end in the longitudinal direction is fixed to the second furring joist support 22 by a fixing bracket 28.

[0059] The fourth corner bar 53 is positioned so that its longitudinal direction is perpendicular to the longitudinal directions of the first and second furring joist supports 21 and 22. Furthermore, one end of the fourth corner bar 53 in its longitudinal direction is fixed to the first furring joist support 21, and the other end in its longitudinal direction is fixed to the second furring joist support 22. The third corner bar 52 and the fourth corner bar 53 are positioned parallel to each other with a predetermined distance between them.

[0060] As shown in Figure 4(a), the third base portion 54 is rectangular in shape, and one end in the longitudinal direction is rotatably connected to the third corner bar 52 via the first pivot pin 57, while the other end in the longitudinal direction is rotatably connected to the fourth corner bar 53 via the second pivot pin 58. This makes it possible to switch between a folded state of the third fixing portion 51 (see Figure 4(a)) and an extended state of the third fixing portion 51 (see Figure 3).

[0061] The fourth saddle band 55 is a support for the tip portion of the guide member 5. The fourth saddle band 55 is fixed to the upper surface and one end in the longitudinal direction of the third base portion 54. Furthermore, the height of the fourth saddle band 55 is adjustable relative to the third base portion 54.

[0062] The fifth saddle band 56 is a support for the base end portion of the guide member 5. The fifth saddle band 56 is fixed to the upper surface and the other end in the longitudinal direction of the third base portion 54. Furthermore, the height of the fifth saddle band 56 is adjustable relative to the third base portion 54.

[0063] In this embodiment, the fourth saddle band 55 and the fifth saddle band 56 are common to the second saddle band 33, so their description is omitted.

[0064] The tip of the guide member 5 is provided with a notch 5a that extends in the direction of the cylindrical axis of the guide member 5 (see Figure 4(b)). As shown in Figure 3, the tip 3a of the head joint 3 is fitted into the notch 5a. This restricts the rotation of the head joint 3.

[0065] Next, a method for installing the sprinkler fire extinguishing pipe 1 according to Embodiment 2 will be described.

[0066] The third fixing part 51 is delivered from the factory or other facility to the construction site (for example, the ceiling space S1 in Figure 3) in the folded state shown in Figure 4(a). Then, as shown in Figure 4(c), the third fixing part 51 is switched from the folded state to the unfolded state at the construction site and fixed to the first joist support 21 and the second joist support 22 using the fixing bracket 28. Next, the sprinkler fire extinguishing piping 1 (resin pipe 2, head joint 3 and guide member 5) delivered from the factory or other facility to the construction site is fixed to the third fixing part 51 to complete the installation.

[0067] Subsequently, a sprinkler head 4 is attached to the tip of the head fitting 3.

[0068] As described above, according to this embodiment, since the tip portion 3a of the head joint 3 is fitted into the notch portion 5a, rotation of the head joint 3 can be suppressed. This prevents the sprinkler head 4 attached to the tip of the head joint 3 from being installed at an angle.

[0069] Furthermore, since the third fixing part 51 is foldable, it can be easily transported from the factory or other location to the construction site.

[0070] Embodiment 3 Next, Embodiment 3 of the present invention will be described using Figures 5 and 6. In Embodiment 3, the focus will be on the differences from Embodiment 2.

[0071] In Embodiment 3, a fourth fixing part 61 and a fifth fixing part 62 are provided in place of the third fixing part 51 of Embodiment 2 (see Figure 5). The fourth fixing part 61 is provided so that the tip end portion of the guide member 5 is supported by the fifth corner bar 63. The fifth fixing part 62 is provided so that the base end portion of the guide member 5 is supported by the sixth corner bar 64.

[0072] The fourth fixing portion 61 and the fifth fixing portion 62 are integrally provided on the main body portion 5b of the guide member 5 and protrude downward from the lower part of the main body portion 5b. Furthermore, the fourth fixing portion 61 and the fifth fixing portion 62 are provided at a predetermined distance from each other in the longitudinal direction of the main body portion 5b of the guide member 5.

[0073] As shown in Figure 6(a), the fourth fixing portion 61 is provided with a second through hole 61a formed through the main body portion 5b of the guide member 5 in a direction perpendicular to the longitudinal direction. The fifth fixing portion 62 is provided with a third through hole 62a formed through the main body portion 5b of the guide member 5 in a direction perpendicular to the longitudinal direction.

[0074] Next, a method for installing the sprinkler fire extinguishing pipe 1 according to Embodiment 3 will be described.

[0075] The fifth corner bar 63 is inserted through the second insertion hole 61a of the guide member 5 of the sprinkler fire extinguishing pipe 1 (see Figure 6(a)) delivered from the factory or other facility to the construction site (for example, the ceiling space S1 in Figure 5), and the fifth corner bar 63 is fixed to the fourth fixing part 61 using the second wing nut 65. Furthermore, the sixth corner bar 64 is inserted through the third insertion hole 62a of the guide member 5, and the sixth corner bar 64 is fixed to the fifth fixing part 62 using the second wing nut 65 (see Figure 6(b)). After that, as shown in Figure 5, the installation of the sprinkler fire extinguishing pipe 1 is completed by fixing the fifth corner bar 63 and the sixth corner bar 64 to the first joist support 21 and the second joist support 22 using the fixing bracket 28.

[0076] Subsequently, a sprinkler head 4 is attached to the tip of the head fitting 3.

[0077] Embodiment 4 Next, Embodiment 4 will be described using Figure 7. In Embodiment 4, the focus will be on the differences from Embodiment 3.

[0078] In Embodiment 4, since air conditioning pipes 71 and beams (not shown) are installed near the installation location of the sprinkler head 4 in the ceiling space S1, the guide member 5 is installed with its longitudinal direction facing up and down to avoid interference between the air conditioning pipes 71 and beams (not shown) and the sprinkler fire extinguishing pipe 1 (see Figure 7). In Figure 7, an example is shown in which the base end of the resin pipe 2 is connected to a header 72. The upstream side of the header 72 is connected to a water source (not shown) and receives water from the water source.

[0079] Furthermore, the guide member 5 includes a main body portion 5b, a sixth fixing portion 73, a seventh fixing portion 74, and a connecting portion 75. The sixth fixing portion 73 is provided so that one side of the guide member 5 is supported by the seventh corner bar 76. The seventh fixing portion 74 is provided so that the other side of the guide member 5 is supported by the eighth corner bar 77.

[0080] The sixth fixing portion 73 and the seventh fixing portion 74 are provided at a predetermined distance from each other. The sixth fixing portion 73 has a fourth through hole 73a formed through the main body portion 5b of the guide member 5 in a direction perpendicular to the longitudinal direction. The seventh fixing portion 74 has a fifth through hole 74a formed through the main body portion 5b of the guide member 5 in a direction perpendicular to the longitudinal direction.

[0081] The connecting portion 75 has a substantially triangular shape when viewed from a direction perpendicular to the longitudinal direction of the main body portion 5b of the guide member 5, and is provided to connect the main body portion 5b, the sixth fixing portion 73, and the seventh fixing portion 74.

[0082] Next, a method for installing the sprinkler fire extinguishing pipe 1 according to Embodiment 4 will be described.

[0083] The seventh corner bar 76 is inserted through the fourth insertion hole 73a of the guide member 5, which has been delivered from the factory or other location to the construction site (for example, the ceiling space S1 in Figure 7), and the seventh corner bar 76 is fixed to the sixth fixing part 73 using the third wing nut 78. Furthermore, the eighth corner bar 77 is inserted through the fifth insertion hole 74a, and the eighth corner bar 77 is fixed to the seventh fixing part 74 using the third wing nut 78. After that, the seventh corner bar 76 and the eighth corner bar 77 are fixed to the first joist support 21 and the second joist support 22 using the fixing bracket 28. Subsequently, the tip of the resin pipe 2, which has a curled shape and has been delivered from the factory or other location to the construction site, is inserted through the upper opening of the main body 5b, and the tip of the resin pipe 2 is exposed downwards through the lower opening of the main body 5b. By inserting the tip of the resin pipe 2 into the guide member 5, the curled shape of the tip of the resin pipe 2 is corrected. In other words, the guide member 5 functions as a means of correcting the coiling of the resin pipe 2. After that, the installation of the sprinkler fire extinguishing piping 1 is completed by attaching the head fitting 3 to the end of the resin pipe 2. In this embodiment, the head fitting 3 is a socket fitting.

[0084] Subsequently, a sprinkler head 4 is attached to the tip of the head fitting 3.

[0085] Embodiment 5 Next, Embodiment 5 will be described using Figures 8 and 9. In Embodiment 5, the focus will be on the differences from Embodiment 1.

[0086] As shown in Figure 8, in Embodiment 5, the first fixing part 29 and the second fixing part 30 of Embodiment 1 are replaced with an eighth fixing part 81 and a ninth fixing part 82. In Embodiment 5, the eighth fixing part 81 is configured to allow adjustment of the height of the head joint 3, while the ninth fixing part 82 is configured to prevent adjustment of the height of the guide member 5. In other words, the eighth fixing part 81 has a height adjustment part, but the ninth fixing part 82 does not.

[0087] The eighth fixing portion 81 includes a fourth base portion 83 and a sixth saddle band 84.

[0088] As shown in Figure 9(a), one end of the fourth base portion 83 is provided with a sixth insertion hole 83a formed through the longitudinal direction of the fourth base portion 83. The eighth fixing portion 81 is fixed to the ninth corner bar 93 using the fourth wing nut 85 when the ninth corner bar 93 is inserted through the sixth insertion hole 83a.

[0089] Furthermore, the other end of the fourth base portion 83 is provided with a fitting groove portion 83b having a trapezoidal cross-sectional shape. In this embodiment, the fitting groove portion 83b extends in the vertical direction (see Figure 9(b)).

[0090] One end of the sixth saddle band 84 is provided with a fitting portion 84a having a trapezoidal cross-sectional shape. In this embodiment, by making the cross-sectional shape of the fitting groove portion 83b that fits with the fitting portion 84a trapezoidal, it is possible to suppress the fitting portion 84a (sixth saddle band 84) from falling out of the fitting groove portion 83b and to suppress the occurrence of localized stress concentration in the fitting portion 84a.

[0091] Furthermore, a second screw hole 84b is provided at one end of the sixth saddle band 84.

[0092] The other end of the sixth saddle band 84 is provided with a fourth retaining portion 84c capable of holding the tip portion 3a of the head joint 3. In this embodiment, the sixth saddle band 84 is made of a one-touch type saddle band.

[0093] As shown in Figure 9(b), a seventh through-hole 83c is provided in the lower part of the fourth base portion 83 so as to extend in the vertical direction. A third bolt 86 is inserted through the seventh through-hole 83c in a position that extends in the vertical direction. The third bolt 86 (for example, a hexagonal bolt) comprises a third head portion 86a and a third shaft portion 86b having threads on its outer surface.

[0094] The third head portion 86a is provided with a tool hole 86c that can be fitted to one end of a tool T (for example, a hex wrench). The third shaft portion 86b is screwed into the second screw hole portion 84b of the sixth saddle band 84. The third shaft portion 86b and the second screw hole portion 84b that is screwed into the third shaft portion 86b constitute the fourth screw adjustment mechanism 87.

[0095] By rotating the third bolt 86 using tool T, the fourth screw adjustment mechanism 87 can be screwed forward or backward, thereby allowing the sixth saddle band 84 to be adjusted vertically. By adjusting the sixth saddle band 84 vertically, it is possible to adjust the height (vertical position) of the tip 3a of the head joint 3 held by the fourth retaining portion 84c of the sixth saddle band 84.

[0096] As shown in Figure 9(c), the ninth fixing part 82 includes a seventh saddle band 88. One end of the seventh saddle band 88 is provided with an eighth insertion hole 88a formed through the seventh saddle band 88 in a direction perpendicular to the longitudinal direction of the seventh saddle band 88. The seventh saddle band 88 (ninth fixing part 82) is fixed to the tenth corner bar 94 using a fifth wing nut 89 when the tenth corner bar 94 is inserted through the eighth insertion hole 88a.

[0097] The other end of the seventh saddle band 88 is provided with a fifth retaining portion 88b capable of holding the base end portion of the guide member 5. In this embodiment, the seventh saddle band 88 is made of a one-touch type saddle band.

[0098] Next, the installation method of the sprinkler fire extinguishing pipe 1 according to Embodiment 5 will be explained using Figure 8.

[0099] First, at the construction site, the 9th corner bar 93 to which the 8th fixing part 81 is attached, and the 10th corner bar 94 to which the 9th fixing part 82 is attached, are fixed to the 1st joist support 21 and the 2nd joist support 22. Then, the sprinkler fire extinguishing piping 1 (resin pipe 2, head fitting 3, and guide member 5) delivered from the factory or other location to the construction site (for example, the ceiling space S1 in Figure 8) is fixed to the 8th fixing part 81 and the 9th fixing part 82 to complete the installation. More specifically, the installation of the sprinkler fire extinguishing piping 1 is completed when the head fitting 3 is fixed to the 6th saddle band 84 and the guide member 5 is fixed to the 7th saddle band 88.

[0100] Subsequently, a sprinkler head 4 is attached to the tip of the head fitting 3.

[0101] As described above, this embodiment makes it possible to adjust the height of the head fitting 3. This makes it easier to ensure the head fitting 3 is level when installing the sprinkler fire extinguishing pipe 1. Therefore, the sprinkler head 4 attached to the tip of the head fitting 3 can be installed in the correct position.

[0102] In embodiments 1 to 3 and 5, the head fitting 3 was described using an example of a 90-degree elbow fitting, but a 45-degree elbow fitting or a 180-degree elbow fitting may also be used.

[0103] Furthermore, in embodiments 1 to 5, the resin pipe 2 and the head joint 3 were connected by electrofusion bonding, but they may also be connected by heat fusion bonding.

[0104] Furthermore, in embodiments 1 to 5, the sprinkler head 4 was described using an example in which it is delivered to the construction site separately from the sprinkler fire extinguishing piping 1 (resin pipe 2, head fitting 3, and guide member 5) and attached to the head fitting 3 of the sprinkler fire extinguishing piping 1 at the construction site. However, the sprinkler fire extinguishing piping 1 with the sprinkler head 4 already attached to the head fitting 3 may also be delivered from the factory or other location to the construction site.

[0105] Furthermore, while embodiments 1 to 5 described an example in which the guide member 5 is made of resin, it may also be made of a material other than resin (for example, a metal material).

[0106] Furthermore, while embodiments 1 to 5 described an example in which the guide member 5 is cylindrical (an example of a tubular shape), the shape of the guide member 5 is not limited to a cylindrical shape. The shape of the guide member 5 may be a rectangular tube, a star-shaped tube, a rhombic tube, a half-tube, a notched tube, etc. Also, the guide member 5 may be composed of a combination of shapes in which the hole shape, selected from circular, polygonal, star-shaped or rhombic, etc., and the contour, selected from circular, polygonal, star-shaped or rhombic, etc., are different (for example, a tubular shape in which the hole shape is circular and the contour is square).

[0107] Furthermore, while embodiments 1 and 2 described examples in which the height of the tip portion and the height of the base portion of the guide member 5 are adjustable, the height of the tip portion or the height of the base portion of the guide member 5 may be adjustable, or the height of the tip portion and the height of the base portion of the guide member 5 may be made inadjustable.

[0108] Furthermore, while embodiments 1 and 2 described examples in which the height of the guide member 5 can be adjusted, and embodiment 5 described an example in which the height of the head joint 3 can be adjusted, the system may also be equipped with both a first height adjustment unit that can adjust the height of the guide member 5 and a second height adjustment unit that can adjust the height of the head joint 3. With this configuration, the height of the head joint 3 and the height of the guide member 5 can be adjusted independently by the first and second height adjustment units. This makes it easier to ensure that the head joint 3 is horizontal when installing the sprinkler fire extinguishing pipe 1. Therefore, the sprinkler head 4 attached to the tip of the head joint 3 can be installed in a more appropriate position.

[0109] Furthermore, while embodiments 1 to 4 described an example in which the guide member 5 is supported at two points, it may also be supported at one point or three or more points.

[0110] Furthermore, although the first saddle band 32 of Embodiment 1, the notch 5a of Embodiments 2 and 3, and the sixth saddle band 84 of Embodiment 5 were used as examples of rotation restricting parts, other examples (for example, mechanical fixing means such as screws) may be used as long as they can restrict the rotation of the head joint 3.

[0111] Furthermore, while the first corner bar 26 and second corner bar 27 in Embodiment 1, the third corner bar 52 and fourth corner bar 53 in Embodiment 2, the fifth corner bar 63 and sixth corner bar 64 in Embodiment 3, the seventh corner bar 76 and eighth corner bar 77 in Embodiment 4, and the ninth corner bar 93 and tenth corner bar 94 in Embodiment 5 were arranged so that their respective longitudinal directions were perpendicular to the longitudinal directions of the first and second joist supports 21 and 22, they may also be arranged so as to intersect the first and second joist supports 21 and 22 at an angle. [Industrial applicability]

[0112] This invention is suitable for fire extinguishing piping for sprinklers. [Explanation of Symbols]

[0113] 1. Fire extinguishing piping for sprinklers 2. Resin pipe 3 Head fittings 5 Guide members 5a Notch 32. First saddle band (rotation restricting section) 34. First screw adjustment mechanism (second height adjustment section) 42. Second screw adjustment mechanism (second height adjustment section) 45. Third screw adjustment mechanism (second height adjustment section) 84. Sixth saddle band (rotation restricting section) 87. Fourth screw adjustment mechanism (first height adjustment section)

Claims

1. Fire extinguishing piping for sprinklers, A resin tube that has a tendency to curl, A head fitting is attached to the end of the aforementioned resin pipe and to which a sprinkler head can be attached, A sprinkler fire extinguishing pipe comprising a cylindrical guide member into which the tip portion of the resin pipe is inserted.

2. In the sprinkler fire extinguishing piping according to claim 1, The aforementioned guide member is a sprinkler fire extinguishing pipe made of resin material.

3. In the sprinkler fire extinguishing piping according to claim 1 or 2, The guide member is configured to be supported at least at two points in a sprinkler fire extinguishing pipe.

4. In the sprinkler fire extinguishing piping according to claim 1 or 2, A sprinkler fire extinguishing pipe further comprising at least one of a first height adjustment section capable of adjusting the height of the head joint and a second height adjustment section capable of adjusting the height of the guide member.

5. In the sprinkler fire extinguishing piping according to claim 1 or 2, The head joint is an elbow joint, A sprinkler fire extinguishing pipe further comprising a rotation restricting section capable of restricting the rotation of the elbow joint.

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