JP7177997B2 - Coupling unit for sprinkler - Google Patents

Description

The present invention relates to a joint unit for sprinklers.

In the ceiling of a building, a ceiling base material is suspended from a slab located on the upper part of the ceiling and supported by mounting brackets. A partition plate is attached to the lower surface of the ceiling base material for partitioning the interior of the building from the ceiling.

In order to install a sprinkler on the ceiling of a building, a sprinkler joint unit as shown in Patent Document 1 is provided between the slab and the ceiling base material. This sprinkler joint unit includes an elbow joint to which a water supply pipe is connected to a horizontally open first end and a sprinkler head is attached to a vertically open second end; a pedestal for supporting the elbow joint; It has

In addition, in the ceiling of a building, a square bar-shaped structural member extending in the horizontal direction is attached to the upper side of the ceiling base material, and the structural member also supports the pedestal of the joint unit for the sprinkler. Such support of the pedestal can be realized by forming a cylindrical portion in the pedestal, through which the structural member is inserted and fixed to the structural member, as disclosed in Patent Document 2.

Japanese Patent No. 3626842 JP-A-11-244408

SUMMARY OF THE INVENTION An object of the present invention is to provide a sprinkler joint unit having a novel configuration.

Means for solving the above problems and their effects will be described below.
A sprinkler joint unit that solves the above problems consists of a joint having a water supply pipe connected to a first end and a sprinkler head attached to a vertically open second end, and a rod-shaped structural member extending horizontally on the ceiling. and a pedestal attached to support the joint so as to be able to move up and down in a vertical direction, wherein the pedestal includes a tubular portion through which the structural member is inserted and fixed to the structural member; and a vertical plate portion having a guide hole extending in the vertical direction, and an end portion on the opposite side of the cylindrical portion inserted through the guide hole and connected to the joint. a guide shaft; and a retaining portion provided at an end portion of the guide shaft on the cylindrical portion side so as to protrude from the guide hole toward the cylindrical portion side to prevent the guide shaft from being detached from the guide hole. At least an upper portion of the rising retaining portion is accommodated between the cylindrical portion and the vertical plate portion by arranging the cylindrical portion and the vertical plate portion apart from each other in the horizontal direction. A possible accommodation space is formed.

According to the above configuration, when the joint is moved up and down with respect to the pedestal, the guide shaft and the retaining portion move vertically relative to the vertical plate portion along the guide hole as the joint moves up and down. Then, when the guide shaft and the retaining portion move upward relative to the vertical plate portion, at least the upper portion of the retaining portion can be accommodated in the accommodation space formed between the cylindrical portion and the vertical plate portion. Therefore, it is possible to suppress interference of at least the upper portion of the retaining portion with the tubular portion or the like, and it is possible to suppress narrowing of the lifting range of the joint due to such interference.

The perspective view which shows roughly the structure of the ceiling of the building to which the joint unit for sprinklers is applied. Sectional drawing which shows the joint unit for sprinklers. The bottom view which shows the state which looked at the joint unit for sprinklers of FIG. 2 from the through-hole side of a partition plate. FIG. 5 is a cross-sectional view showing a state in which the slider is lowered to the lowest point with respect to the vertical plate portion of the second base member; FIG. 5 is a cross-sectional view showing how a bolt is operated in the holding portion of the slider;

An embodiment of a sprinkler joint unit will be described below with reference to FIGS. 1 to 5. FIG.
As shown in FIG. 1, a plurality of C-shaped channels 2 extending horizontally in parallel with each other are suspended from a slab 1 located on the upper part of the ceiling of a building and supported by mounting brackets 3 . Furthermore, a plurality of ceiling base materials 4 extending in a direction intersecting the C-shaped channel 2 are fixed to the lower surface of each C-shaped channel 2 so as to be parallel to each other. Therefore, each ceiling base material 4 is suspended from the slab 1 by the C-shaped channel 2 and the mounting bracket 3 .

A plurality of partition plates 5 are attached to the lower surface of the ceiling base material 4 for partitioning the interior of the building from the ceiling. On the other hand, on the upper side of the ceiling base material 4 in the ceiling of the building, more specifically, on the upper surface of the C-shaped channel 2, a square bar-shaped structural member 6 extending in the horizontal direction is attached. This structural member 6 is used to support electrical wiring and the like in the building between the slab 1 and the ceiling base material 4 in the ceiling of the building, and to support joint units for sprinklers.

As shown in FIG. 2, the sprinkler joint unit 7 includes an elbow joint 8 having a horizontally open first end 8a and a vertically open second end 8b, and an elbow joint attached to the structural member 6. and a pedestal 9 for supporting 8. In the elbow joint 8, a water supply pipe 10 is connected to the first end 8a, and a sprinkler head 11 is attached to the second end 8b.

The water supply pipe 10 extends substantially horizontally between the slab 1 and the ceiling base material 4 in the ceiling of the building (FIG. 1). The partition plate 5 attached to the lower surface of the ceiling base material 4 has a through hole for exposing a part of the sprinkler head 11 attached to the second end 8b of the elbow joint 8 as shown in FIG. 12 are formed. Incidentally, the amount of protrusion of the sprinkler head 11 with respect to the second end 8b, in other words, the height position of the lower surface of the sprinkler head 11 in FIG.

The pedestal 9 of the sprinkler joint unit 7 includes a first pedestal member 14 having a tubular portion 13 through which the structural member 6 is inserted and fixed to the structural member 6 . In addition, in the structural member 6, the surface that comes into contact with the cylindrical portion 13 of the first base member 14 when inserted into the cylindrical portion 13 functions as a construction surface on which the base 9 is attached.

The cylindrical portion 13 of the first pedestal member 14 is formed by bending a metal plate into a square tube shape and connecting overlapping portions of the metal plate in the thickness direction with rivets 38 through the bending. It should be noted that the portions of the metal plates that overlap in the thickness direction may be welded by electric welding or the like instead of connecting with the rivets 38 . A threaded hole 39 is formed in the tubular portion 13 . When the wing bolt 40 is screwed into the screw hole 39 , the structural member 6 is pressed by the wing bolt 40 . As a result, the tubular portion 13 is fixed to the structural member 6 through the frictional force between the structural member 6 and the tubular portion 13 . Instead of using the wing bolts 40 , the tubular portion 13 may be fixed to the structural member 6 by screwing screws into the tubular portion 13 through the screw holes 39 .

A support plate 15 extending upward from the tubular portion 13 is formed on the first base member 14 . The upper portion of the support plate 15 is bent so as to extend in the horizontal direction, and the tip portion 15a (right end portion in FIG. 2) of the support plate 15 is bent so as to protrude upward.

The pedestal 9 of the sprinkler joint unit 7 also includes a second pedestal member 16 connected to the first pedestal member 14 . Since the second seat member 16 is attached to the structural member 6 via the first seat member 14 , it serves as a seat body attached to the construction surface of the structural member 6 . The elbow joint 8 is provided on the second seat member 16 . A slider 17 is held on the second base member 16 to support the elbow joint 8 so as to be vertically movable. The second pedestal member 16 at this time plays a role as a joint pedestal that holds the slider 17 for supporting the elbow joint 8 so that it can move up and down.

The second pedestal member 16 has a horizontal plate portion 18 overlapping in the thickness direction the lower surface of the upper portion of the support plate 15 of the first pedestal member 14 and extending in the horizontal direction. A vertical plate portion 19 extending toward is formed. The vertical plate portion 19 is positioned laterally (to the right in FIG. 2) with respect to the cylindrical portion 13 of the first base member 14 . The cylindrical portion 13 and the vertical plate portion 19 are arranged apart from each other in the horizontal direction, thereby forming an accommodation space S between the cylindrical portion 13 and the vertical plate portion 19 .

At both edges of the vertical plate portion 19 in the width direction (the direction perpendicular to the paper surface of FIG. 2), guide walls 20 protrude in the opposite direction (right side in FIG. 2) from the cylinder portion 13 side in the vertical direction. It is formed so as to extend (only one guide wall 20 is shown in FIG. 2). Furthermore, a guide hole 21 that is elongated in the vertical direction is formed in the central portion of the vertical plate portion 19 in the width direction. The guide hole 21 is a through hole that penetrates the vertical plate portion 19 in the horizontal direction.

The slider 17 held by the second base member 16 has a holding portion 22 integrally formed with the elbow joint 8, and protrudes from the holding portion 22 so as to pass through the guide hole 21 while being displaced within the guide hole 21. and a butterfly bolt 24 screwed into the end portion of the shaft portion 23 opposite to the holding portion 22 side. A screw hole 25 into which the butterfly bolt 24 is screwed is formed in the shaft portion 23 and the holding portion 22 so as to extend in the horizontal direction.

The shaft portion 23 can move in the guide hole 21 in the longitudinal direction (vertical direction) of the same hole 21 . One end (the right end in FIG. 2) of the shaft portion 23 is connected to the holding portion 22 for supporting the elbow joint 8 . A butterfly bolt 24 screwed into the other end (the left end in FIG. 1) of the shaft portion 23 is inserted through the guide hole 21 and is located on the opposite side of the cylindrical portion 13 of the first base member 14 (the left end in FIG. 1). 2 functions as a guide shaft that is connected to the elbow joint 8 via a holding portion 22 . A head portion 24 a of the butterfly bolt 24 functions as a locking portion that prevents the shaft portion 23 from slipping out of the guide hole 21 . Further, the head portion 24a of the wing bolt 24 is provided at the end of the wing bolt 24 (guide shaft) on the cylindrical portion 13 side (left side in FIG. 2) so as to protrude from the guide hole 21 toward the cylindrical portion 13 side. It also functions as a retaining portion for retaining the wing bolt 24 from the guide hole 21 .

3 shows a state in which the sprinkler joint unit 7 is viewed from the through hole 12 side of the partition plate 5 shown in FIG. As can be seen from FIG. 3, the holding portion 22 of the slider 17 is formed with contact portions 22a that are in surface contact with the pair of guide walls 20 of the vertical plate portion 19, respectively. Therefore, when the slider 17 (shaft portion 23) and the elbow joint 8 move in the vertical direction (in the direction perpendicular to the paper surface of FIG. 3), the movement is guided by the pair of guide walls 20, and the shaft portion 23 Rotation about the center line of is restricted.

As shown in FIG. 2, the holding portion 22 of the slider 17 is formed with a threaded hole 26 extending vertically through the holding portion 22 . This threaded hole 26 intersects with the threaded hole 25 . A bolt 27 (operating member) is screwed into the screw hole 26 from the bottom to the top. A head 27a of the bolt 27 is formed with a hexagonal hole 27b. By using the tool inserted into the hexagonal hole 27b to rotate the bolt 27 around its center line, the bolt 27 is displaced in the center line direction with respect to the holding portion 22, The head 27a of the bolt 27 approaches and separates from the holding portion 22 along with the displacement.

On the second base member 16, the slider 17 is pressed in the direction in which the shaft portion 23 extends based on the rotation operation of the bolt 27, thereby moving the slider 17 (the holding portion 22 or the head portion 24a of the butterfly bolt 24) to the vertical plate portion. A fixing member 28 is provided which is pressed against and fixed to 19 . The fixing member 28 consists of a first plate 29 arranged in a gap between the vertical plate portion 19 of the second base member 16 and the holding portion 22 of the slider 17, and an end portion of the first plate 29 (lower end in FIG. 2). and a second plate 30 connected to the part).

In the first plate 29 of the fixing member 28, the width in the direction orthogonal to the longitudinal direction (vertical direction) of the guide hole 21 and the extending direction (horizontal direction) of the shaft portion 23 is greater than the width of the guide hole 21 in that direction. has also been made larger. A recess 31 is formed at the end of the first plate 29 opposite to the end on the second plate 30 side to accommodate the shaft portion 23 so as to sandwich the shaft portion 23 in the radial direction. The second plate 30 of the fixing member 28 is arranged outside the gap between the vertical plate portion 19 and the holding portion 22, and is inclined with respect to the first plate 29 so that the head portion 27a of the bolt 27 There is a gap between the holding portion 22 and the holding portion 22 in the approaching/separating direction with respect to the holding portion 22 . Further, the second plate 30 has an insertion portion 32 (a hole in this example) through which the threaded portion 27c of the bolt 27 is inserted.

Then, when the head 27a of the bolt 27 approaches the holding portion 22 based on the turning operation of the bolt 27 in the tightening direction, the second plate 30 moves toward the edge portion of the first plate 29 in the holding portion 22. The first plate 29 presses the head portion 24a of the butterfly bolt 24 and the vertical plate portion 19 in the direction in which the shaft portion 23 extends. Specifically, when the first plate 29 is pressed against the vertical plate portion 19 , the fixing member 28 presses the holding portion 22 away from the vertical plate portion 19 in the direction in which the shaft portion 23 extends. As the holding portion 22 is pressed away from the vertical plate portion 19 in this way, the head portion 24a of the butterfly bolt 24 connected to the shaft portion 23 is pressed against the vertical plate portion 19 in the direction in which the shaft portion 23 extends. Thereby, the slider 17 (elbow joint 8) is fixed to the second base member 16 (vertical plate portion 19).

On the other hand, when the head portion 27a of the bolt 27 is separated from the holding portion 22 based on the turning operation of the bolt 27 in the loosening direction, the second plate 30 moves toward the edge portion P1 of the first plate 29 in the holding portion 22. is allowed to rotate in the direction opposite to the above-described rotation. As a result, the pressure exerted by the first plate 29 on the head portion 24a of the butterfly bolt 24 and the vertical plate portion 19 in the extending direction of the shaft portion 23 is released. Specifically, when the pressing force of the first plate 29 against the vertical plate portion 19 is released, the fixing member 28 is also released from pressing the holding portion 22 away from the vertical plate portion 19 in the direction in which the shaft portion 23 extends. . By releasing the pressure, the head portion 24a of the butterfly bolt 24 connected to the shaft portion 23 is also released from being pressed against the vertical plate portion 19 in the direction in which the shaft portion 23 extends. As a result, the slider 17 (elbow joint 8) is also released from the second base member 16 (vertical plate portion 19), allowing the slider 17 to move in the longitudinal direction (vertical direction) of the guide hole 21.

Incidentally, when the holding portion 22 of the slider 17 is brought closest to the vertical plate portion 19 in a state in which the fixing of the slider 17 to the second base member 16 is released by rotating the bolt 27 in the loosening direction, The tip of the slider 17 in the projecting direction of the shaft portion 23 slightly projects from the vertical plate portion 19 . That is, the amount of protrusion of the shaft portion 23 with respect to the holding portion 22 (the length of the shaft portion 23 in the direction in which the shaft portion 23 protrudes) is determined so that such a phenomenon occurs. As a result, when the bolt 27 is loosened, a gap can be formed between the vertical plate portion 19 and the head portion 24a of the butterfly bolt 24. This gap allows the head portion 24a of the butterfly bolt 24 to move toward the guide hole 21. Since interference (such as catching) is less likely to occur, the movement of the slider 17 along the guide hole 21 can be performed smoothly.

When the slider 17 moves vertically relative to the vertical plate portion 19 (guide hole 21 ), the butterfly bolt 24 , elbow joint 8 , etc. also move integrally with the slider 17 . However, the upper portion of the head portion 24a of the butterfly bolt 24 that moves in this way does not interfere with the cylindrical portion 13 of the first base member 14. As shown in FIG. That is, the accommodation space S formed between the cylindrical portion 13 and the vertical plate portion 19 can accommodate at least the upper portion (in this example, the entirety) of the head portion 24a of the butterfly bolt 24, thereby When the bolt 24 moves in the vertical direction, the head 24a is prevented from interfering with the cylindrical portion 13 of the first base member 14. As shown in FIG.

Next, the connection structure between the first seat member 14 and the second seat member 16 in the sprinkler joint unit 7 will be described in detail.
The horizontal plate portion 18 of the second pedestal member 16 is connected to the portion of the first pedestal member 14 above the support plate 15 and extending in the horizontal direction via a bolt 33 (vertical shaft). More specifically, a bolt 33 penetrates from top to bottom through the horizontal plate portion 18 and the upper portion of the support plate 15, which overlap in the thickness direction. The horizontal plate portion 18 and the support plate 15 are connected through bolting.

A head portion 33 a of the bolt 33 is in surface contact with the side wall of the tip portion 15 a of the support plate 15 . This prevents the bolt 33 from rotating together with the nut 34 when the nut 34 is tightened or loosened. Incidentally, when the nut 34 is loosened, the second seat member 16 is rotatable about the bolt 33. When the nut 34 is tightened, the second seat member 16 is rotated about the bolt 33. 16 is regulated.

Further, the position where the bolt 33 penetrates the support plate 15 and the horizontal plate portion 18 is determined at a position where the center line of the bolt 33 coincides with the center line of the second end 8 b of the elbow joint 8 . Therefore, when the second pedestal member 16 rotates about the bolt 33, the second end 8b (the sprinkler head 11) of the elbow joint 8 shifts horizontally from the position corresponding to the through hole 12 of the partition plate 5. Storing is suppressed.

Next, a procedure for installing the sprinkler joint unit 7 will be described.
In the ceiling of the building shown in FIG. attached to the At this time, the sprinkler joint unit 7 is in a state in which the water supply pipe 10 is connected to the first end 8a of the elbow joint 8 and the sprinkler head 11 is attached to the second end 8b, as shown in FIG. there is

Although the water supply pipe 10 connected to the first end 8a of the elbow joint 8 extends substantially horizontally between the slab 1 and the ceiling base material 4 in the ceiling of the building, it does not necessarily extend in the opening direction of the first end 8a. and toward the opening of the first end 8a, but may extend obliquely with respect to the opening direction of the first end 8a. When the direction in which the water supply pipe 10 extends and the opening direction of the first end 8a are different in this way, if the relative position of the second seat member 16 with respect to the first seat member 14 is fixed, the first end 8a The water supply pipe 10 to be connected must be bent, and there is a risk that the water supply pipe 10 will be bent beyond the bending radius specified for each pipe.

In order to deal with such a problem, the second base member 16 can be rotated around the bolt 33 by loosening the nut 34 used for bolting the horizontal plate portion 18 and the support plate 15 . Note that FIG. 3 shows a state in which the second base member 16 is rotated by a predetermined angle as described above. Through the rotation of the second base member 16, the direction in which the first end 8a of the elbow joint 8 is opened corresponds to the direction in which the water supply pipe 10 extends. By rotating the second pedestal member 16 (elbow joint 8) in this way, the water supply pipe 10 connected to the first end 8a of the elbow joint 8 is bent beyond the bending radius defined for each pipe. is suppressed.

After rotating the second seat member 16 (elbow joint 8) as described above, by tightening the nut 34 shown in FIG. The position of is fixed.

As shown in FIG. 2, in the sprinkler joint unit 7, the first plate 29 of the fixing member 28 is positioned between the holding portion 22 and the edge portion P1 of the holding portion 22 near the end of the first plate 29 as a fulcrum. It is made to be in a tilted state by rotating so as to have a gap at the bottom. That is, the threaded portion 27c of the bolt 27 is screwed into the screw hole 26 so that the first plate 29 is in such a state.

Further, in the sprinkler joint unit 7, by loosening the wing bolt 24 to some extent, the slider 17 and the elbow joint 8 are moved vertically relative to the second base member 16 (vertical plate portion 19) along the guide hole 21. It is possible to 4 shows a state in which the slider 17 is lowered to the lowest point with respect to the vertical plate portion 19 of the second base member 16. As shown in FIG.

Prior to attaching the sprinkler joint unit 7 to the structural member 6, the relative positions of the slider 17 and the elbow joint 8 in the vertical direction with respect to the vertical plate portion 19 of the second base member 16 are adjusted in advance as follows. . That is, when the structural member 6 to which the sprinkler joint unit 7 is fixed is attached to the C-shaped channel 2 ( FIG. 1 ), the sprinkler head 11 is positioned at a height corresponding to the partition plate 5 to be attached to the ceiling base material 4 . The relative positions of the slider 17 and the elbow joint 8 in the vertical direction with respect to the vertical plate portion 19 are adjusted in advance so that .

After the relative positions of the slider 17 and the elbow joint 8 with respect to the vertical plate portion 19 are adjusted in this way, the wing bolts 24 are tightened so that the first plate 29 of the fixing member 28 is positioned between the holding portion 22 and the first plate 29 of the fixing member 28 . The head portion 24a of the butterfly bolt 24 and the vertical plate portion 19 are pressed in the direction in which the shaft portion 23 extends with a gap therebetween. Then, the slider 17 is fixed to the vertical plate portion 19 through the pressure.

After the slider 17 is fixed to the vertical plate portion 19 of the second base member 16 by tightening the wing bolts 24, the partition plate 5 is attached to the lower surface of the ceiling base material 4 as shown in FIG. At this time, the sprinkler head 11 attached to the second end 8 b of the elbow joint 8 is positioned corresponding to the through hole 12 of the partition plate 5 . However, a part of the sprinkler head 11 may be removed from the through hole 12 of the partition plate 5 due to an error in the fixed position of the slider 17 with respect to the vertical plate portion 19 or an error in the height position at which the partition plate 5 is attached. Proper exposure may not be possible.

In this case, the vertical position of the slider 17 (elbow joint 8) is readjusted as follows so that a portion of the sprinkler head 11 can be properly exposed from the through hole 12.

As described above, when the slider 17 (elbow joint 8) is fixed to the vertical plate portion 19, if the bolt 27 on the holding portion 22 of the slider 17 is rotated in a direction to be loosened, the head portion 27a of the bolt 27 is loosened. is separated from the holding portion 22, and the fixing of the slider 17 to the vertical plate portion 19 by the pressure of the first plate 29 is released. As a result, it becomes possible to move the slider 17 and the elbow joint 8 relative to the vertical plate portion 19 in the vertical direction.

Therefore, as shown in FIG. 5, a hexagonal wrench 35 is inserted into the hexagonal hole 27b of the head 27a of the bolt 27 in the slider 17 (holding portion 22) through the through hole 12 of the partition plate 5, and the state is , the hexagonal wrench 35 is used to turn the bolt 27 in the direction of loosening. As a result, the bolt 27 is displaced in the centerline direction, and the head 27a of the bolt 27 is separated from the holding portion 22 accordingly. Then, when the head portion 27a of the bolt 27 is separated from the holding portion 22, the second plate 30 moves away from the holding portion 22 with the edge portion P1 near the end of the first plate 29 in the holding portion 22 as a fulcrum. It becomes possible to rotate. As a result, the pressing force between the slider 17 (the head 24a of the butterfly bolt 24) and the vertical plate portion 19 in the direction in which the shaft portion 23 extends by the first plate 29 is released, and thus the slider 17 is no longer fixed to the vertical plate portion 19. be released.

Under the condition that the slider 17 is released from the fixed state, the slider 17 can be operated directly through the through hole 12 of the partition plate 5, more specifically, by moving the slider 17 up and down with a hexagonal wrench 35. , the slider 17 can be freely moved within the range in which the shaft portion 23 can be displaced within the guide hole 21 . Then, after adjusting the position of the slider 17 (elbow joint 8) so that a part of the sprinkler head 11 connected to the second end 8b of the elbow joint 8 is properly exposed from the through hole 12, it is tightened with a hexagonal wrench 35. The head 27a of the bolt 27 is brought closer to the holding portion 22 by rotating the bolt 27 in the direction. As a result, the second plate 30 rotates about the edge portion P1 of the first plate 29 near the end of the holding portion 22 as a fulcrum, and the first plate 29 moves the slider 17 and the vertical plate portion 19 from the shaft portion 23. Press in the extending direction. With this pressing, the head portion 24 a of the butterfly bolt 24 in the slider 17 is pressed against the vertical plate portion 19 of the second base member 16 .

After the position of the slider 17 is fixed in the vertical direction with respect to the vertical plate portion 19 of the second base member 16, the cap 36 is removed from the sprinkler head 11 connected to the second end 8b of the elbow joint 8, and the sprinkler head 11 is removed. A sealing plate 37 is attached as indicated by a chain double-dashed line in FIG. The sealing plate 37 protects the sprinkler head 11 and prevents water from entering between the partition plate 5 and the slab 1 (FIG. 1) through the through holes 12 when water is discharged from the sprinkler head 11. This is to prevent

According to the present embodiment described in detail above, the following effects can be obtained.
(1) In the ceiling, the water supply pipe 10 connected to the first end 8a of the elbow joint 8 may extend obliquely with respect to the opening direction of the first end 8a. Even in this case, the second seat member 16 provided with the elbow joint 8 is rotated relative to the support plate 15 of the first seat member 14 around the bolt 33, thereby opening the first end 8a. can correspond to the direction in which the water supply pipe 10 extends. By rotating the second pedestal member 16 (elbow joint 8) in this way, the water supply pipe 10 connected to the first end 8a of the elbow joint 8 is bent beyond the bending radius defined for each pipe. things become suppressed.

(2) The second seat member 16 rotates around the bolt 33 by loosening the nut 34 used for fastening the bolt between the horizontal plate portion 18 of the second seat member 16 and the support plate 15 of the first seat member 14 . While the second base member 16 is in a movable state, the rotation of the second base member 16 is restricted by tightening the nut 34 . The head 33a of the bolt 33, which is used together with the nut 34 when tightening the bolt, is in surface contact with the side wall of the tip 15a of the support plate 15. Therefore, when the nut 34 is tightened or loosened, the head 33a of the bolt 33 is in surface contact. Co-rotation of the bolt 33 can be suppressed.

(3) When the slider 17 moves in the vertical direction relative to the vertical plate portion 19 (guide hole 21), the head portion 24a of the butterfly bolt 24, which moves in the vertical direction along with the movement, moves along the cylindrical portion of the first base member 14. 13 and the vertical plate portion 19 of the second base member 16 . Therefore, when the slider 17 moves in the vertical direction, the head portion 24 a of the butterfly bolt 24 is prevented from interfering with the cylindrical portion 13 of the first base member 14 . Therefore, it is possible to suppress narrowing of the movement range (lifting range) of the elbow joint 8 in the vertical direction due to such interference.

It should be noted that the above embodiment can be modified, for example, as follows.
The accommodation space S does not necessarily have to accommodate the entire head portion 24a of the butterfly bolt 24, and may accommodate only the upper portion of the head portion 24a.

- The joint used in the sprinkler joint unit 7 does not necessarily have to be the elbow joint 8, and a joint other than the elbow joint 8 can be used.
- Between the head 24a of the butterfly bolt 24 and the vertical plate portion 19 of the second base member 16, a metal washer or a slide plate made of synthetic resin such as fluorine resin (for example, polytetrafluoroethylene) is provided. may In this case, when the slider 17 is moved along the guide hole 21, the head 24a of the butterfly bolt 24 does not interfere with the portion of the vertical plate portion 19 where the guide hole 21 is formed. You can move smoothly.

・The head 33a of the bolt 33 does not necessarily have to be in surface contact with the side wall of the tip 15a of the support plate 15. For example, a gap is formed between the head 33a and the side wall to prevent the bolt 33 from rotating. may have been

The pedestal 9 of the sprinkler joint unit 7 is of a type in which the first pedestal member 14 and the second pedestal member 16 are integrally formed. It may be of a non-movable type. Specifically, of the portion of the first pedestal member 14 above the support plate 15 and extending in the horizontal direction, the portion overlapping the horizontal plate portion 18 of the second pedestal member 16 in the thickness direction is omitted. The horizontal plate portion 18 of the base member 16 is also omitted. Then, the vertical plate portion 19 of the second seat member 16 is integrally formed with the support plate 15 of the first seat member 14 . In this case, the elbow joint 8 is mounted on the structural member 6 in a state where the top and bottom of the elbow joint 8 are the same as in the above embodiment, and the top and bottom of the pedestal 9 is reversed with respect to the above embodiment. The lifting range of the joint 8 can be shifted up and down as compared with the case of the above embodiment.

Next, technical ideas that can be grasped from the above embodiment will be described.
(a) a joint having a water supply pipe connected to the first end and a sprinkler head attached to the second end that opens vertically; A sprinkler joint unit comprising:
The pedestal includes a tubular portion through which the structural member is inserted and fixed to the structural member, a vertical plate portion positioned on the side of the tubular portion and having a guide hole extending in the vertical direction, and a guide shaft which is inserted through a guide hole and whose end opposite to the cylinder portion is connected to the joint; a retaining portion that is provided so as to protrude and prevents the guide shaft from detaching from the guide hole,
By arranging the cylindrical portion and the vertical plate portion apart in the horizontal direction, an accommodation space is provided between the cylindrical portion and the vertical plate portion that can accommodate at least an upper portion of the raised retaining portion. A joint unit for a sprinkler in which is formed.

According to the above configuration, when the joint is moved up and down with respect to the pedestal, the guide shaft and the retaining portion move vertically relative to the vertical plate portion along the guide hole as the joint moves up and down. Then, when the guide shaft and the retaining portion move upward relative to the vertical plate portion, at least the upper portion of the retaining portion can be accommodated in the accommodation space formed between the cylindrical portion and the vertical plate portion. Therefore, it is possible to suppress interference of at least the upper portion of the retaining portion with the tubular portion or the like, and it is possible to suppress narrowing of the lifting range of the joint due to such interference.

(b) A joint pedestal comprising a pedestal body attached to a construction surface and a slider movably held by the pedestal body for supporting a joint,
The slider includes a shaft portion that passes through a through hole formed in the base body and is capable of being displaced within the through hole, and a holding portion that is connected to one end of the shaft portion and supports the joint. and a locking portion connected to the other end of the shaft portion to prevent the shaft portion from slipping out of the through hole,
The holding portion of the slider is provided with an operating member that is rotatably operated,
A fixing member is provided that presses the slider in the direction in which the shaft extends based on the rotating operation of the operating member, thereby pressing and fixing the holding portion or the locking portion against the pedestal main body. Pedestal for joint characterized.

According to the above configuration, the partition plate is installed so that the holding portion of the slider that supports the joint is positioned corresponding to the through hole of the partition plate under the condition that the pedestal body is attached to the construction surface. After such installation, when it becomes necessary to adjust the fixed position of the slider (joint) with respect to the pedestal body, the adjustment can be performed easily and quickly. That is, when adjusting the fixed position of the slider with respect to the pedestal main body, the fixing of the slider is released by rotating the operating member on the holding portion through the through hole of the partition plate. When the slider is released from fixation in this manner, the slider can be freely moved within the through-hole within a range in which the shaft portion can be displaced by directly operating the slider through the through-hole. be able to. Therefore, the slider can be moved easily and quickly relative to the pedestal body, and the fixed position of the slider can be adjusted easily and quickly through the movement of the slider. The position-adjusted slider is fixed to the pedestal main body by rotating the operating member in the direction opposite to the rotating operation described above.

(C) An elbow joint having a water supply pipe connected to a first end that opens horizontally and a sprinkler head attached to a second end that opens vertically; a pedestal supporting the elbow joint by means of a first pedestal member, the pedestal including a first pedestal member having a cylindrical portion through which the structural member is inserted and fixed to the structural member; A joint unit for a sprinkler, comprising: a second seat member provided with a joint and connected to the first seat member via a vertical shaft so as to be rotatable about the same vertical shaft.

DESCRIPTION OF SYMBOLS 1... Slab, 2... C-shaped channel, 3... Mounting bracket, 4... Ceiling base material, 5... Partition plate, 6... Structural material, 7... Sprinkler joint unit, 8... Elbow joint, 8a... First end, 8b Second end 9 Pedestal 10 Water supply pipe 11 Sprinkler head 12 Through hole 13 Cylindrical portion 14 First pedestal member 15 Support plate 15a Tip end 16 Second Pedestal member 17 Slider 18 Horizontal plate portion 19 Vertical plate portion 20 Guide wall 21 Guide hole 22 Holding portion 22a Contact portion 23 Shaft 24 Wing bolt 24a ...Head 25...Screw hole 26...Screw hole 27...Bolt 27a...Head 27b...Hexagonal hole 27c...Screw part 28...Fixing member 29...First plate 30...Second plate 31... recess, 32... insertion part, 33... bolt, 33a... head, 34... nut, 35... hexagon wrench, 36... cap, 37... sealing plate, 38... rivet, 39... screw hole, 40... butterfly bolt .

Claims (1)

A joint to which a water supply pipe is connected to a first end and a sprinkler head is attached to a vertically open second end, and the joint is attached to a rod-shaped structural member extending horizontally on the ceiling so that the joint can be raised and lowered in the vertical direction. A sprinkler joint unit comprising a pedestal that supports the
The pedestal includes a tubular portion through which the structural member is inserted and fixed to the structural member, a vertical plate portion positioned on the side of the tubular portion and having a guide hole extending in the vertical direction, and a threaded portion of a butterfly bolt that is inserted through a guide hole and connected to the joint at the end opposite to the cylindrical portion; a head of the wing bolt that is provided to project sideways and prevents the threaded portion from slipping out of the guide hole,
By arranging the cylindrical portion and the vertical plate portion apart in the horizontal direction, at least the upper portion of the head of the wing bolt that has risen is accommodated between the cylindrical portion and the vertical plate portion. Coupling unit for sprinkler in which a possible accommodation space is formed.

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