JP7583380B2 - Fittings - Google Patents

Description

Application of Article 30, Paragraph 2 of the Patent Act On March 4, 2016, Onda Seisakusho Co., Ltd. unveiled the joint base of the present invention to Takenaka Corporation.

Application of Article 30, Paragraph 2 of the Patent Act On March 4, 2016, Onda Seisakusho Co., Ltd. disclosed the joint base of the present invention to Obayashi Corporation.

The present invention relates to a joint.

A known joint base includes a base body that is attached to a construction surface and a slider that is movably held on the base body and supports a joint that connects two components. Such joint bases are used when installing a joint that connects two components, such as a water supply pipe and a sprinkler head, between the construction surface and a partition plate that is installed a specified distance from the construction surface.

In this case, a water supply pipe is connected to a first end of the joint, while a sprinkler head is connected to a second end of the joint. After the base body is attached to the construction surface, the position of the sprinkler head connected to the second end of the joint is properly adjusted by moving the slider relative to the base body, and the slider is fixed to the base body at that position. Furthermore, a partition plate is installed at a predetermined distance from the construction surface. This partition plate has a through hole formed therein to expose a part of the sprinkler head connected to the second end of the joint when installed as described above.

Incidentally, examples of structures for adjusting the position of the sprinkler head connected to the second end of the joint through the relative movement of the slider with respect to the base body include the structures shown in Patent Documents 1 and 2.

When the structure of Patent Document 1 is applied to a joint base, a long moving hole is formed in the base body in the center line direction (vertical direction) of the through hole in the partition plate, and multiple locking holes that branch off from the moving hole and extend in the circumferential direction (horizontal direction) of the through hole are formed at equal intervals in the center line direction. In addition, a downwardly recessed locking portion is formed at the tip of each locking hole in the extension direction. Meanwhile, a shaft portion that passes through the moving hole is provided on the slider, and the shaft portion can be displaced within the moving hole and the locking hole. In addition, a locking screw is attached to the end of the shaft portion to prevent the shaft portion from coming out of the moving hole.

According to this structure, the slider (shaft) is moved to a position corresponding to a specific locking hole in the extension direction (vertical direction) of the moving hole. The slider is then moved in the circumferential direction (horizontal direction) of the through hole so that the shaft is inserted into the locking hole, and the shaft is dropped into the locking portion of the locking hole, thereby determining the vertical position of the slider, in other words, the vertical position of the sprinkler head. Therefore, by moving the slider (shaft) along the moving hole and the locking hole and dropping the shaft into the locking portion of one of the locking holes, the vertical position of the sprinkler head can be adjusted.

When the structure of Patent Document 2 is applied to a joint base, the base body is provided with a feed screw shaft that extends in the direction of the center line (vertical direction) of the through hole in the partition plate. Meanwhile, the slider is connected to a nut that screws onto the feed screw shaft, and is prevented from rotating integrally with the feed screw shaft when the feed screw shaft rotates.

According to this structure, by rotating the feed screw shaft, the nut is displaced in the axial direction (vertical direction) of the feed screw shaft, and the slider connected to the nut is displaced in the axial direction of the feed screw shaft. Therefore, by rotating the feed screw shaft, the vertical position of the sprinkler head connected to the second end of the joint is adjusted.

Japanese Patent Application Publication No. 5-123418 Japanese Patent Application Publication No. 11-244408

The object of the present invention is to provide a new joint.

The present invention is a joint comprising a base attached to a construction surface, a slider movably held on the base, and a joint body supported by the slider, the slider being provided with an operating member that is rotated when adjusting the position of the slider, and a guide portion that guides the position of the operating member is provided on the surface of the joint, the guide portion makes it easy to bring a tool for rotating the operating member into contact with the operating position of the operating member, and the guide portion has a mark that makes it easy to confirm the position of the operating member.

FIG. FIG. 4 is a bottom view showing the joint base as viewed from the through-hole side of the partition plate. FIG. 11 is a cross-sectional view showing a state in which the slider has reached its lowest point. FIG. 4 is a cross-sectional view showing a state in which a bolt is rotated with a hexagonal wrench. FIG. 11 is a cross-sectional view showing another example of the fixing member. FIG. 4 is a cross-sectional view showing another example of a joint. 13 is a bottom view showing the joint and the joint base as viewed from the through-hole side of the partition plate. FIG. FIG. 11 is a cross-sectional view showing a state in which the slider has reached its lowest point. FIG. 4 is a cross-sectional view showing a state in which a bolt is rotated with a hexagonal wrench.

Hereinafter, one embodiment of a joint base will be described with reference to FIGS.
As shown in Fig. 1, the joint base 1 is used when installing a joint 6 connecting two components, for example, a water supply pipe 4 and a sprinkler head 5, between a partition plate 3 installed at a predetermined distance from a construction surface 2 and the construction surface 2. The water supply pipe 4 is connected to a first end 6a of the joint 6 via another joint 15, and the sprinkler head 5 is connected to a second end 6b of the joint 6. A cap 25 for protecting the sprinkler head 5 is attached to the sprinkler head 5. Meanwhile, a through hole 22 is formed in the partition plate 3 to expose a part of the sprinkler head 5 connected to the second end 6b of the joint 6.

The joint base 1 has a base body 8 that is attached to the construction surface 2 by a fixing bolt 7. The base body 8 has a protruding portion 9 that extends in a direction protruding from the construction surface 2. The protruding portion 9 has a long hole 10 that is long in the direction in which the protruding portion 9 protrudes, and a slider 11 for supporting the joint 6 is movably held in the protruding portion 9.

The slider 11 includes a retaining portion 12 formed integrally with the joint 6, a shaft portion 13 that protrudes from the retaining portion 12 and passes through the long hole 10 and is capable of being displaced within the long hole 10, and a wing bolt 14 that is screwed into the end of the shaft portion 13 opposite the retaining portion 12. The shaft portion 13 and the retaining portion 12 are formed with a screw hole 23 into which the wing bolt 14 is screwed. The screw hole 23 extends in a direction perpendicular to the protruding direction of the protruding portion 9 in the base body 8 (left and right direction in FIG. 1).

The long hole 10 formed in the protruding portion 9 functions as a through hole through which the shaft portion 13 passes. The shaft portion 13 is capable of moving in the longitudinal direction of the long hole 10 within the long hole 10. The retaining portion 12 for supporting the joint 6 is connected to one end of the shaft portion 13 (the left end in FIG. 1). The head of the butterfly bolt 14 connected to the other end of the shaft portion 13 (the right end in FIG. 1) functions as a locking portion that prevents the shaft portion 13 from coming out of the long hole 10.

A screw hole 24 is formed in the holding portion 12 of the slider 11, extending in the protruding direction of the protruding portion 9 in the base body 8 and penetrating the holding portion 12. This screw hole 24 intersects with the screw hole 23. A bolt 16 is screwed toward the construction surface 2 into the portion of the screw hole 24 opposite the construction surface 2. When the bolt 16 is screwed into the screw hole 24, the tip of the threaded portion 16c of the bolt 16 protrudes from the portion of the holding portion 12 on the construction surface 2 side. Furthermore, the tip of the threaded portion 16c is flattened with a punch or the like, so that the tip has a larger diameter than the inner diameter of the screw hole 24.

A hexagonal hole 16b is formed in the head 16a of the bolt 16. When a tool is inserted into the hexagonal hole 16b and the tool is used to rotate the bolt 16 around its center line, the bolt 16 is displaced in the direction of the center line relative to the holding part 12, and the head 16a of the bolt 16 moves closer to and away from the holding part 12 as a result of the displacement. The tip of the threaded part 16c of the bolt 16, which has a larger diameter than the inner diameter of the threaded hole 24, functions as a retainer for the bolt 16 from the threaded hole 24, and prevents the bolt 16 from falling out of the threaded hole 24 when the bolt 16 is rotated excessively in the direction of loosening.

The joint base 1 is provided with a fixing member 17 that presses the slider 11 in the direction in which the shaft 13 extends based on the rotation of the bolt 16, thereby pressing and fixing the slider 11 (the holding portion 12 or the head of the wing bolt 14) against the protruding portion 9 of the base body 8. The fixing member 17 includes a first plate 18 that is disposed in the gap between the protruding portion 9 of the base body 8 and the holding portion 12 of the slider 11, and a second plate 19 that is connected to the end of the first plate 18 (the lower end in FIG. 1).

In the first plate 18 of the fixing member 17, the width in the direction perpendicular to the longitudinal direction of the long hole 10 and the direction in which the shaft portion 13 extends is larger than the width of the long hole 10 in that direction. A recess 21 is formed at the end of the first plate 18 opposite the end on the second plate 19 side to accommodate the shaft portion 13 so as to sandwich it radially. In addition, the second plate 19 of the fixing member 17 is disposed outside the gap between the protrusion 9 and the retaining portion 12, and is inclined with respect to the first plate 18 to have a gap between the retaining portion 12 in the direction of approaching and receding from the retaining portion 12 at the head 16a of the bolt 16. Furthermore, the second plate 19 has an insertion portion 20 (a hole in this example) for inserting the threaded portion 16c of the bolt 16.

When the head 16a of the bolt 16 approaches the retaining portion 12 based on the rotation operation in the tightening direction of the bolt 16, the second plate 19 rotates about the edge portion P1 near the end of the first plate 18 in the retaining portion 12 as a fulcrum, and the first plate 18 presses the head and protruding portion 9 of the wing bolt 14 in the direction in which the shaft portion 13 extends. In detail, the first plate 18 is pressed against the protruding portion 9, and the fixing member 17 presses the retaining portion 12 in the direction in which the shaft portion 13 extends away from the protruding portion 9. As the retaining portion 12 is pressed in the direction in which the protruding portion 9 extends, the head of the wing bolt 14 connected to the shaft portion 13 is pressed against the protruding portion 9 in the direction in which the shaft portion 13 extends, and the slider 11 (joint 6) is fixed to the base body 8 (protruding portion 9).

On the other hand, when the head 16a of the bolt 16 is separated from the retaining portion 12 based on the rotation operation in the loosening direction of the bolt 16, the second plate 19 is allowed to rotate in the opposite direction to the rotation described above, with the edge portion P1 near the end of the first plate 18 in the retaining portion 12 as the fulcrum. As a result, the pressure applied by the first plate 18 to the head of the wing bolt 14 and the protruding portion 9 in the extension direction of the shaft portion 13 is released. In detail, the release of the pressure applied by the first plate 18 to the protruding portion 9 also releases the fixing member 17 from pressing the retaining portion 12 in the direction away from the protruding portion 9 in the extension direction of the shaft portion 13. The release of the pressure also releases the head of the wing bolt 14 connected to the shaft portion 13 from being pressed against the protruding portion 9 in the extension direction of the shaft portion 13. As a result, the slider 11 (joint 6) is released from its fixed position on the base body 8 (protrusion 9), allowing the slider 11 to slide in the longitudinal direction of the long hole 10 and rotate around the center line of the shaft 13.

Note that Figure 2 shows the joint base 1 as viewed from the through-hole 22 side of the partition plate 3. As can be seen from the figure, the bolt 16 of the joint base 1 is positioned so as to overlap the through-hole 22 in the direction of the center line of the through-hole 22.

Next, a procedure for installing the joint 6 using the joint base 1 will be described.
1, before the partition plate 3 is installed, the base body 8 of the joint base 1 is attached to the construction surface 2 by the fixing bolt 7. Then, the shaft portion 13 of the slider 11 is passed through the long hole 10 of the base body 8 (protruding portion 9), and the butterfly bolt 14 is screwed into the screw hole 23 of the shaft portion 13 to a certain extent, so that the slider 11 can move relative to the protruding portion 9 of the base body 8.

Figure 3 shows the state in which the slider 11 has lowered due to its own weight to its lowest point relative to the protruding portion 9 of the base body 8. At this time, the first plate 18 is rotated and tilted with the edge portion P1 near the end of the first plate 18 in the holding portion 12 as a fulcrum so that there is a gap between the first plate 18 and the holding portion 12. In other words, the threaded portion 16c of the bolt 16 is screwed into the screw hole 24 so that the first plate 18 is in this state.

Then, the position of the joint 6 is adjusted to the appropriate position (the position in Figure 1) through the relative movement of the slider 11 with respect to the protruding portion 9 of the base body 8, and the wing bolt 14 is tightened at that position. When the wing bolt 14 is tightened in this manner, the first plate 18 presses the head of the wing bolt 14 and the protruding portion 9 in the direction in which the shaft portion 13 extends, with a gap between it and the retaining portion 12, and the slider 11 is fixed to the protruding portion 9 through this pressure.

As described above, when the slider 11 (joint 6) is fixed to the protruding portion 9, by rotating the bolt 16 in the retaining portion 12 of the slider 11 in a direction to loosen it, the head 16a of the bolt 16 moves away from the retaining portion 12, and the slider 11 is released from the fixation to the protruding portion 9 by the pressure of the first plate 18. As a result, it becomes possible to move the slider 11 relative to the protruding portion 9.

Now, after the slider 11 is fixed to the protruding portion 9 of the base body 8 by tightening the wing bolt 14 as described above, the partition plate 3 is installed at a predetermined distance from the construction surface 2. When the partition plate 3 is installed in this manner, a part of the sprinkler head 5 connected to the second end 6b of the joint 6 is exposed from the through hole 22 of the partition plate 3. That is, by adjusting the position of the joint 6 to an appropriate position through the relative movement of the slider 11 with respect to the protruding portion 9 as described above, a part of the sprinkler head 5 is exposed from the through hole 22 when the partition plate 3 is installed.

However, due to an incorrect fixing position of the slider 11 relative to the protrusion 9 or an error in the installation position of the partition plate 3, the sprinkler head 5 may not be in the correct relative position to the through hole 22 when the partition plate 3 is installed, and a part of the sprinkler head 5 may not be properly exposed through the through hole 22. In this case, the position of the slider 11 (joint 6) is properly readjusted so that the sprinkler head 5 is in the correct position, as follows.

That is, as shown in FIG. 4, a hexagonal wrench 31 is inserted into the hexagonal hole 16b of the head 16a of the bolt 16 in the slider 11 (retaining portion 12) through the through hole 22 of the partition plate 3, and in this state, the bolt 16 is rotated in a direction to loosen it using the hexagonal wrench 31. This causes the bolt 16 to displace in the direction of its center line, and the head 16a of the bolt 16 moves away from the retaining portion 12. When the head 16a of the bolt 16 moves away from the retaining portion 12, the second plate 19 can rotate in a direction away from the retaining portion 12, with the edge portion P1 near the end of the first plate 18 in the retaining portion 12 as a fulcrum. As a result, the pressure exerted by the first plate 18 on the slider 11 (the head of the butterfly bolt 14) and the protruding portion 9 of the base body 8 in the direction in which the shaft portion 13 extends is released, and the slider 11 is released from the protruding portion 9.

In this manner, when the slider 11 is released from its fixed position, the slider 11 can be freely moved within the long hole 10 within the range in which the shaft 13 can be displaced by directly operating the slider 11 through the through hole 22 of the partition plate 3, specifically by raising and lowering the slider 11 with the hexagonal wrench 31. Then, after adjusting the position of the slider 11 (joint 6) so that a part of the sprinkler head 5 connected to the second end 6b of the joint 6 is exposed from the through hole 22, the head 16a of the bolt 16 is brought closer to the holding portion 12 by rotating the bolt 16 in the tightening direction with the hexagonal wrench 31. As a result, the second plate 19 rotates around the edge portion P1 near the end of the first plate 18 in the holding portion 12 as a fulcrum, and the first plate 18 presses the slider 11 and the protruding portion 9 in the direction in which the shaft 13 extends. This pressure causes the head of the wing bolt 14 on the slider 11 to be pressed against the protruding portion 9 of the base body 8.

After the position of the slider 11 is fixed in this way, the cap 25 is removed from the sprinkler head 5 connected to the second end 6b of the joint 6, and a sealing plate 26 is attached to the sprinkler head 5 as shown by the two-dot chain line in Figure 1. This sealing plate 26 protects the sprinkler head 5 and prevents water from entering between the partition plate 3 and the construction surface 2 through the through hole 22 when water is released from the sprinkler head 5.

Next, the function and effect of the joint base 1 will be described.
After installing the partition plate 3 at a specified distance from the construction surface 2 to which the base body 8 is attached, when it becomes necessary to adjust the fixed position of the slider 11 (joint 6) relative to the protrusion 9 of the base body 8 so that a portion of the sprinkler head 5 connected to the second end 6b of the joint 6 is exposed from the through hole 22 of the partition plate 3, the adjustment can be made easily and quickly.

That is, when adjusting the fixed position of the slider 11, the bolt 16 in the holding portion 12 is rotated with a hexagonal wrench 31 through the through hole 22 of the partition plate 3, thereby releasing the fixed position of the slider 11. By releasing the fixed position of the slider 11 in this way, the slider 11 can be freely moved within the range in which the shaft portion 13 can be displaced within the long hole 10 by directly operating the slider 11 through the through hole 22. Therefore, the slider 11 can be easily and quickly moved relative to the protruding portion 9 of the base body 8, and the fixed position of the slider 11 can be easily and quickly adjusted through the movement of the slider 11.

The above embodiment can be modified, for example, as follows.
5, the first plate 18 of the fixing member 17 may be disposed in the gap between the protruding portion 9 of the base body 8 and the head of the wing bolt 14 of the slider 11. In this case, the second plate 19 of the fixing member is connected to the end of the first plate 18 while passing through the long hole 10 of the protruding portion 9. Note that the second plate 19 in this example is narrowed in width so that it can pass through the long hole 10, but the insertion portion 20 is a notch rather than a through hole so that the insertion portion 20 can be formed even with such a narrow width.

According to this configuration, when the head 16a of the rotated bolt 16 approaches the holding portion 12, the second plate 19 rotates about the edge portion P1 near the end of the first plate 18 in the holding portion 12 as a fulcrum, and the first plate 18 is pressed against the head of the wing bolt 14. As a result, the fixing member 17 presses the wing bolt 14 in the direction in which the shaft portion 13 extends, away from the protruding portion 9, and the holding portion 12 connected to the wing bolt 14 via the shaft portion 13 is pressed against the protruding portion 9. As a result, the slider 11 (joint 6) is fixed to the base body 8 (protruding portion 9).

On the other hand, when the head 16a of the bolt 16 being rotated moves away from the holding portion 12, the second plate 19 is allowed to rotate in the opposite direction to the rotation described above, with the edge portion P1 near the end of the first plate 18 in the holding portion 12 as the fulcrum. As a result, the pressure of the first plate 18 against the head of the butterfly bolt 14 is released, and the fixing member 17 is also released from pressing the holding portion 12 against the protruding portion 9 in the direction in which the shaft portion 13 extends. This releases the fixation of the slider 11 (joint 6) to the base body 8 (protruding portion 9), allowing the slider 11 to move freely within the range in which the shaft portion 13 can be displaced within the long hole 10.

- As shown in FIG. 6, the portion of the joint 6 near the first end 6a may be inclined with respect to the construction surface 2 so that the closer it is to the first end 6a, the closer it is to the construction surface 2. In this case, even if the water supply pipe 4 is disposed on the construction surface 2 and the joint 6 is fixed at a position away from the construction surface 2, the water supply pipe 4 can be connected to the first end 6a of the joint 6 without being bent with a large curvature.

・As shown in Figs. 7 to 9, the joint 6 may be provided with a guide portion 27 that guides the position of the bolt 16 (operating member). In this case, the joint 6 is supported by the slider and serves as a joint body provided with a guide portion. The guide portion 27 is provided so as to protrude from the surface of the second end 6b of the joint 6 on the bolt 16 side, as shown in Fig. 7. The guide portion 27 also has a concave curved surface 28 formed in a position visible through the through hole 22. This concave curved surface 28 is formed at the tip of the guide portion 27 in the protruding direction, and is curved in the circumferential direction of the threaded portion 16c of the bolt 16 (Figs. 8 and 9). Furthermore, the concave curved surface 28 is formed so as to be seen to surround the left half of the hexagonal hole 16b of the bolt 16 in Fig. 7. The concave curved surface 28 also extends in the axial direction of the bolt 16 (the vertical direction in Fig. 8) as shown in Fig. 8.

Figure 8 shows the state in which the slider 11 has been lowered by its own weight to its lowest point relative to the protrusion 9 of the base body 8. In this state, the position of the joint 6 is adjusted to an appropriate position through the relative movement of the slider 11 with respect to the protrusion 9 of the base body 8, and the slider 11 is fixed to the protrusion 9 by tightening the wing bolt 14 at that position. Then, as shown in Figure 9, the partition plate 3 is installed at a specified distance from the construction surface 2.

When the position of the slider 11 (joint 6) is to be properly readjusted after the partition plate 3 is installed, as shown in FIG. 9, a hexagonal wrench 31 is inserted into the hexagonal hole 16b of the head 16a of the bolt 16 in the slider 11 (retaining portion 12) through the through hole 22 of the partition plate 3, and the bolt 16 is rotated in this state using the hexagonal wrench 31. When the hexagonal wrench 31 is inserted into the hexagonal hole 16b to rotate the bolt 16 in this manner, the guide portion 27 guides the position of the hexagonal hole 16b in the bolt 16 as follows.

That is, the concave curved surface 28 of the guide portion 27 serves as a landmark, and the position of the hexagonal hole 16b can be easily confirmed by visually checking the concave curved surface 28, making it easier to insert the hexagonal wrench 31 into the hexagonal hole 16b. Also, by inserting the hexagonal wrench 31 inside the concave curved surface 28 and then moving the hexagonal wrench 31 along the concave curved surface 28 in the direction in which the concave curved surface 28 extends (the axial direction of the bolt 16), the hexagonal wrench 31 can be easily inserted into the hexagonal hole 16b.

As can be seen from the above, guiding the position of the bolt 16 by the guide portion 27 means displaying a mark that makes it easy to visually confirm the position of the bolt 16 (hexagonal hole 16b), and making it easier to bring the hexagonal wrench 31 into the operating position of the bolt 16 (position of the hexagonal hole 16b) by the shape of the concave curved surface 28 located around the head 16a of the bolt 16. By guiding the position of the bolt 16 by the guide portion 27 in this way, even if the hexagonal wrench 31 must be inserted into the hexagonal hole 16b by inserting it into the narrow space between the inner wall of the through hole 22 and the outer wall of the second end 6b, this insertion can be made easier, and it becomes easier to rotate the bolt 16 using the hexagonal wrench 31.

The guide for the position of the bolt 16 by the guide portion 27 may be only a mark that makes it easy to visually confirm the position of the bolt 16 (hexagonal hole 16b). In this case, for example, a recess may be formed with a punch or the like in the portion of the second end 6b of the joint 6 shown in FIG. 2 that is on the bolt 16 side and corresponds to the hexagonal hole 16b, and the recess may be used as the guide portion. Furthermore, paint or phosphorescent paint may be poured into the recess to make it more noticeable. Alternatively, a mark may be made with paint or phosphorescent paint in the portion of the second end 6b that is on the bolt 16 side and corresponds to the hexagonal hole 16b, without forming a recess as described above, and the portion may function as the guide portion.

8 and 9, the bolt 16 may be made even longer so that the bolt 16 extends from the retaining portion 12, thereby allowing the head 16a of the bolt 16 to reach the concave surface 28 of the guide portion 27. In this case, it is preferable to provide a cylindrical spacer between the head 16a of the bolt 16 and the second plate 19 of the fixing member 17, and to have the threaded portion 16c of the bolt 16 pass through the spacer.

As described above, if the head 16a of the bolt 16 reaches the concave surface 28 of the guide portion 27, the hexagonal wrench 31 can be easily inserted into the inside of the concave surface 28 to bring the hexagonal wrench 31 into contact with the head 16a (hexagonal hole 16b), which is the operating position of the bolt 16. In addition, by providing the spacer, when the head 16a of the bolt 16 is brought close to the holding portion 12 through a rotation operation, the spacer presses the second plate 19. Therefore, even if the bolt 16 is in a state where it extends from the holding portion 12 so that the head 16a of the bolt 16 reaches the concave surface 28 of the guide portion 27, the head 16a of the bolt 16 can be brought close to the holding portion 12 to press the second plate 19.

Instead of providing the spacer, the head 16a may be provided with a protrusion that protrudes toward the second plate 19 and abuts against the second plate 19, or the second plate 19 may be provided with a protrusion that protrudes toward the head 16a and abuts against the head 16a. By the way, if the spacer is provided, it is not necessary to provide such protrusions, so the second plate 19 can be pressed by the approach of the head 16a of the bolt 16 to the retaining portion 12 without complicating the shape of the head 16a or the second plate 19.

- In Figures 8 and 9, the guide portion 27 and the concave surface 28 may be extended toward the retaining portion 12 so that the head 16a of the bolt 16 reaches the concave surface 28, or the second end 6b of the joint 6 on which the guide portion 27 and the concave surface 28 are provided may be positioned further toward the retaining portion 12 so that the head 16a of the bolt 16 reaches the concave surface 28.

Instead of flattening the tip of the threaded portion 16c of the bolt 16, a split pin may be provided at the tip to prevent the bolt 16 from slipping out of the threaded hole 24.

- Although the joint 6 has been exemplified as connecting two components, the water supply pipe 4 and the sprinkler head 5, it may also connect two components other than the water supply pipe 4 and the sprinkler head 5. In this case, the construction surface 2 to which the base body 8 of the joint base 1 is attached does not necessarily have to be a horizontal surface, and may be a surface other than a horizontal surface, such as a vertical surface.

Next, the technical concept that can be understood from the above embodiment will be described.
(a) A joint comprising a base to be attached to a construction surface, a slider movably held on the base, and a joint body supported by the slider, wherein the slider comprises an axial portion that passes through a through hole formed in the base and is displaceable within the through hole, a retaining portion connected to one end of the axial portion and supporting the joint body, and an engaging portion connected to the other end of the axial portion and preventing the axial portion from coming out of the through hole, wherein the retaining portion of the slider is provided with an operating member that is rotated, and a fixing member is provided that presses the slider in the direction in which the axial portion extends based on the rotational operation of the operating member, thereby pressing and fixing the retaining portion or the engaging portion against the base, and wherein the joint body is provided with a guide portion that guides the position of the operating member.

According to the above configuration, when adjusting the fixed position of the slider relative to the base, the operating member in the holding section is rotated through the through hole of the partition plate to release the fixed slider. When the operating member is rotated in this manner, the guide section guides the position of the operating member, making it easy to grasp the position of the operating member and rotate the operating member. Examples of guidance for the position of the operating member by the guide section include the display of a mark that makes it easy to visually confirm the position of the operating member, and the peripheral shape of the operating member that makes it easy to face the operating position of the operating member with a tool for rotating the operating member, etc.

(b) The joint described in (a) above, in which the operating member is a bolt whose head moves toward and away from the holding portion of the slider based on the rotation operation, the guide portion is provided so as to protrude from the surface of the joint body facing the bolt, and the tip portion in the protruding direction has a concave curved surface that curves in the circumferential direction of the threaded portion of the bolt, and the bolt is in a state in which the head extends from the holding portion so as to reach the concave curved surface of the guide portion.

With the above configuration, if a tool for rotating the bolt is inserted inside the concave curved surface of the guide portion of the joint body, the tool can be easily brought into contact with the head of the bolt, which is the operating position.

(c) The joint described in (b) above, in which the fixing member is composed of a first plate disposed in the gap between the base and the slider, and a second plate disposed outside the gap between the base and the slider, connected to an end of the first plate, and inclined relative to the first plate to have a gap between the first plate and the retaining portion in the direction of approach and separation of the head of the bolt from the retaining portion, the second plate is provided with an insertion portion for inserting the threaded portion of the bolt, and a spacer is provided between the second plate and the head of the bolt, and the second plate is configured to rotate around an edge portion of the retaining portion near the end of the first plate as a fulcrum when the head of the bolt approaches the retaining portion based on the rotation operation of the bolt, thereby pressing the slider and the base in the direction of extension of the shaft portion.

According to the above configuration, when the head of the bolt is brought close to the holding part by a rotating operation, the second plate is pushed by the spacer between the head and the second plate, causing the second plate to rotate around the edge part of the first plate near the end of the holding part as a fulcrum, and the first plate presses the slider and the base in the direction of extension of the shaft part. Then, with this pressing, the holding part or the locking part of the slider is pressed against the base, and the position of the slider is fixed. Therefore, even if the bolt is in a state where it extends from the holding part so that the head of the bolt reaches the concave curved surface of the guide part, the second plate can be pressed by bringing the head of the bolt close to the holding part. In addition, by providing the spacer, the second plate can be pressed by the head of the bolt approaching the holding part without complicating the shape of the head of the bolt or the second plate of the fixing member.

(d) A joint comprising a base to be attached to a construction surface, a slider movably held on the base, and a joint body supported by the slider, the slider being provided with an operating member that presses and fixes the slider against the base based on the rotational operation of the operating member, and the joint body being provided with a guide portion that guides the position of the operating member.

1...joint base, 2...construction surface, 3...partition plate, 4...water supply pipe, 5...sprinkler head, 6...joint, 6a...first end, 6b...second end, 7...fixing bolt, 8...base body, 9...protrusion, 10...long hole, 11...slider, 12...holding portion, 13...shaft, 14...wing bolt, 15...joint, 16...bolt, 16a...head, 16b...hexagonal hole, 16c...screw portion, 17...fixing member, 18...first plate, 19...second plate, 20...insertion portion, 22...through hole, 23...screw hole, 24...screw hole, 25...cap, 26...sealing plate, 27...guide portion, 28...concave curved surface, 31...hexagonal wrench.

Claims (1)

a joint comprising: a base having a base body to be attached to a construction surface and a protruding portion extending in a direction protruding from the construction surface ; a slider held by the protruding portion and capable of linear movement in a direction toward and away from the construction surface ; and a joint body having a holding portion integrally formed with the slider and to which a water supply member is connected ; an operating member is screwed into a screw hole formed in the slider so as to extend in the protruding direction of the protruding portion , and the operating member is rotated around the center line of the screw hole when adjusting the position of the slider; and a guide portion is provided in the joint at a position farther from the construction surface than the operating member to guide the position of the operating member, the guide portion making it easier to bring a tool for rotating the operating member into contact with the operating position of the operating member; and the guide portion has a mark that makes it easy to confirm the position of the operating member , the mark being configured by the peripheral shape of the operating member .