JPH08257160A - Pipe fixing mechanism - Google Patents

Abstract

PURPOSE: To provide a pipe fixing mechanism which facilitates and ensures easy and reliable pipe fixing. CONSTITUTION: A fixing metal device 21 to fix a pipe 20 is composed of a body 30 and a wedge member 31, the metal device body 30 is nearly U-shaped, made up of a holding part 30a holding a joint 24, and a pair of extensions 30b, 30b extending from both ends, and grooves 33, 33 and claws 34, 34 are formed in both extensions 30b, 30b. The joint 24 is inserted into the pipe 20, a square pipe 3 is run through the groves 33, 33, and the wedge member 31 is fitted between the square pipe 3 and the claws 34, 34.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe fixing structure suitable for fixing a pipe connected to a sprinkler head of a sprinkler fire extinguishing equipment at a predetermined position when the sprinkler head is installed at a predetermined position. It is a thing.

[0002]

2. Description of the Related Art Generally, in order to attach a sprinkler head of a sprinkler fire extinguishing facility, a sprinkler head is provided at a predetermined position on the ceiling, and the sprinkler head and a branch pipe on the ceiling are connected by unwinding piping. .

Since this unwinding pipe needs to be piped so as not to interfere with the ceiling support member, various other pipes, wiring, etc., conventionally, a straight pipe and a curved pipe joint have been combined for piping. . However, this piping method has a problem that it takes much time and effort to process and mount the straight pipe and the curved pipe to be used.

For this reason, in recent years, a piping method using a flexible pipe made of stainless steel or the like having flexibility has been widely used. By using such a flexible pipe, it is possible to easily avoid other obstacles and perform piping work.

As a structure for fixing the end portion of the unwinding pipe provided with such a flexible pipe for connecting to the sprinkler head provided on the ceiling, there is, for example, the following structure. As shown in FIG. 5, in the ceiling,
The connection joint 2 provided at the tip of the flexible pipe 1
In the fixing member 3 made of square pipe material erected in the ceiling,
It is fixed by a substantially U-shaped fixing member 4. The fixing bracket 4 is composed of a strip-shaped metal plate bent in a substantially U-shape at the central portion in the longitudinal direction, and has a curved portion 4a at the center.
The connection joint 2 is held by. Then, the flat plate portions 4b, 4b on both sides of the curved portion 4a are formed with elongated holes 5 elongated in the longitudinal direction, respectively, so that the fixing member 3 can be passed through these elongated holes 5, 5. It has become. The thumbscrew 6 is attached to the tip of one flat plate 4b.
Is screwed, and when the thumbscrew 6 is tightened, the connection joint 2 is fixed to the fixing member 3 by the fixing metal fitting 4.

Further, as shown in FIG. 6, there is also a method of fixing the connection joint 2 at the tip of the flexible pipe 1 with a substantially U-shaped fixing metal fitting 7. The fixing bracket 7 has a central portion 7a.
Is provided with an adjusting screw 8 having a pad 8a for fixing the connection joint 2, and both end portions 7b and 7b orthogonal to the adjusting screw 8 are provided.
In addition, grooves 9, 9 for locking the fixing member 3 are formed. Then, the fixing member 3 is passed through the grooves 9 and 9, the connecting joint 2 is sandwiched between the fixing member 3 and the central portion 7a of the fixing metal fitting 7, and the adjusting screw 8 is tightened to attach the pad 8a to the connecting joint 2. The structure is such that the connection joint 2 is fixed to the fixing member 3 by pressing.

Further, as shown in FIG. 7, there is also a method of fixing the connection joint 2 at the tip of the flexible tube 1 to the perforated plate 10. As shown in FIG. 7A, the perforated plate 10 includes a nut 1 screwed to the connection joint 2.
A large diameter hole 13 having a diameter larger than the outer diameters of 1 and 12;
A small diameter hole 14 having substantially the same diameter as the outer diameter of the connection joint 2 is continuously formed adjacently. Then, when fixing the connection joint 2, after inserting the connection joint 2 in which the nuts 11 and 12 are screwed into the large-diameter hole 13 of the perforated plate 10 fixed at a predetermined position on the ceiling back, FIG. As shown in (b), this is moved laterally to move the connection joint 2 into the small diameter hole 14. At this time, the perforated plate 10 is sandwiched between the nuts 11 and 12. Then the nuts 11,1
The connection joint 2 is fixed to the perforated plate 10 by tightening 2.

[0008]

However, the conventional pipe fixing structure as described above has the following problems. First, in both of the pipe fixing structures shown in FIGS. 5 and 6, in order to fix the connection joint 2 to the predetermined height with the fixing metal fittings 4 and 7, the height of the connection joint 2 should be determined. While holding by hand, thumbscrew 6, adjustment screw 8
However, it is difficult to secure the positioning accuracy of the connection joint 2 in the up-down direction. To solve this problem, a marking such as a sticker with a scale is attached to the connecting joint 2 and the positioning is performed according to the scale, but this method also uses positioning as a register. However, when a large number of connecting joints 2 are fixed, the vertical positions of the connecting joints 2 vary.

On the other hand, in the pipe fixing structure shown in FIG. 7, the work of setting the connection joint 2 on the perforated plate 10 itself can be easily performed. However, even in this structure, it takes time to adjust the positions of the nuts 11 and 12 in order to accurately position the connection joint 2 in the vertical direction, and therefore the above problem has not been solved.

Further, in any of the fixing structures of the pipes shown in FIGS. 5 to 7, in the fixing fittings 4 and 7 or the perforated plate 10, the force in the rotational direction around the axis of the connection joint 2 is set. There is a problem that the holding power is weak. Therefore, when the sprinkler head is screwed into the tip of the connection joint 2, the connection joint 2 may rotate together.

The present invention has been made in consideration of the above points, and an object of the present invention is to provide a pipe fixing structure capable of easily and reliably fixing the pipe.

[0012]

The invention according to claim 1 is
A structure for fixing a pipe having a connection joint at an end of a flexible pipe having flexibility at a predetermined position,
A fixing metal fitting for fixing the pipe is composed of a metal fitting main body and a wedge main body, and the metal fitting main body holds a holding portion for holding the connection joint, and a pair of extending portions extending from both end portions of the holding portion. And a groove or hole is formed in both of the extending portions, and a claw portion is formed inside the tip portions of the extending portions. The connecting joint of the pipe is inserted into the holding portion of the metal fitting body, the rod body installed at a predetermined position is passed through the groove or hole of the extending portion, and the wedge member is the rod body and the claw. It is characterized in that it is fitted between the portion and.

According to a second aspect of the present invention, in the pipe fixing structure according to the first aspect, a locking projection is formed on an inner peripheral surface of the holding portion of the metal fitting body, and an outer peripheral surface of the connection joint is formed. , A plurality of engagement grooves are formed at intervals in a direction along the axis of the connection joint.

The invention according to claim 3 is the invention according to claim 1 or 2.
In the pipe fixing structure described above, the outer peripheral surface of the connection joint is polygonal in cross section.

The invention according to claim 4 relates to claims 1 to 3.
In the pipe fixing structure according to any one of claims 1 to 3, a protrusion that engages with the rod when the wedge member is fitted to a predetermined position is provided on the rod side of the wedge member. Is characterized by.

[0016]

According to the first aspect of the invention, the fixing metal fitting for fixing the pipe is composed of a metal fitting body and a wedge body, and the metal fitting body is provided with a holding portion for holding the connection joint and both end portions of the holding portion. Is formed into a substantially U-shape consisting of a pair of extending portions extending from each other, and grooves or holes are formed in both extending portions,
A claw portion is formed inside the tip portion of these extending portions. Then, while inserting the pipe connection joint into the holding part of the metal fitting body, pass the rod installed at a predetermined position through the groove or hole of the extension part, and fit the wedge member between the rod and the claw part. It was configured to be crowded. With this, when fixing the pipe at a predetermined position, the connection joint is inserted into the holding portion of the metal fitting body, the rod installed at the predetermined position is passed through the groove or hole of the extending portion, and the rod and the claw portion are A wedge member may be fitted between them. Therefore, it is not necessary to screw the screw member as in the conventional case, and the fixing work can be performed with one touch.

According to a second aspect of the present invention, a locking projection is formed on the inner peripheral surface of the holding portion of the metal fitting body, and a plurality of engagement grooves are formed at intervals on the outer peripheral surface of the connection joint. did. Accordingly, by appropriately selecting the engagement groove of the connection joint to be engaged with the locking protrusion of the fixing fitting, it is possible to accurately perform the positioning work of the connection joint without performing any measurement work or the like.

According to the third aspect of the invention, the outer peripheral surface of the connection joint is polygonal in cross section. As a result, a flat surface portion is formed on the outer peripheral surface of the connection joint, and by fixing the flat surface portion to the rod body with the fixing bracket, the connection joint is prevented from rotating in the axial direction. be able to.

According to a fourth aspect of the present invention, the wedge side of the wedge member is provided with a convex portion that engages with the rod when the wedge member is fitted to a predetermined position. This allows
When the wedge member is fitted to the predetermined position, the convex portion engages with the rod and makes a noise or a noise, so that the wedge member can be fitted securely.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in the drawings. 1 to 4 are views showing piping of a sprinkler head to which a piping fixing structure according to the present invention is applied. In these drawings, reference numeral 20 denotes unwinding pipes for connecting the branch pipes in the ceiling for supplying water to the sprinkler head S and the sprinkler head S.
Reference numeral 1 denotes a fixing fitting for fixing the unwinding pipe 20 to the back of the ceiling. As shown in FIG. 1A, the unwinding pipe 2
0 is on one end side of the flexible tube 22 having flexibility,
Nipple 2 for connecting to a branch pipe (not shown) in the ceiling
3 is provided, and a connection joint 24 for connecting to a sprinkler head (not shown) is provided on the other end side.

The flexible tube 22 has a flexible outer peripheral surface of a tube 25 made of, for example, stainless steel.
For example, it is configured to be covered with a mesh-shaped blade 26 made of stainless steel.

At one end of the nipple 23, a blade retainer 23a for holding the blade 26 of the flexible tube 22 is provided.
Is provided, and a screw portion 23b for connecting the nipple 23 to a branch pipe (not shown) under the ceiling is formed on the other end side.

On the other hand, the connection joint 24 is provided with a holding cylinder 27 for holding the blade 26 of the flexible pipe 22 at one end side and a socket portion 24a for mounting a sprinkler head (not shown) at the other end side. Has been done.

As shown in FIGS. 1 (a) and 1 (b), the holding cylinder 27 has, for example, a regular octagonal shape in cross section, and thus eight flat surfaces 27a are formed on the outer peripheral surface thereof. ing. As shown in FIG. 1A, this holding cylinder 27
Engaging grooves 28, 28, ... Are formed at predetermined intervals along the outer peripheral surface of the. The groove diameter of each engaging groove 28 is set to be larger than the spacing between the flat portions 27a, 27a facing each other and smaller than the spacing, that is, the diagonal dimension, between the corners 27b, 27b facing each other. As a result, each engagement groove 28 is formed so as to extend in the circumferential direction only at a constant size on both sides of each corner 27b.

As shown in FIG. 2, the fixing metal fitting 21 for fixing the connection joint 24 of the unwinding pipe 20 having such a structure is composed of a metal fitting body 30 and a wedge member 31.

As shown in FIG. 2A, the metal fitting body 30
Is substantially U-shaped in plan view, and is formed by a holding portion 30a that holds the holding cylinder 27 of the connection joint 24, and a pair of extending portions 30b and 30b that extend in parallel from both ends of the holding portion 30a. There is.

The holding portion 30a has a holding cylinder 27 on its inner peripheral surface.
Is formed so as to extend along the outer peripheral surface of the above for approximately half the circumference.
The engaging groove 2 is provided inside the upper edge of the holding portion 30a.
8 are formed with locking projections 32, 32, ... Having an inner diameter approximately the same as that of 8, and the locking projections 32 are engaged with the engaging grooves 28 (see FIG. 1) of the holding cylinder 27. Has become.

As shown in FIG. 2B, the extending portions 30b,
Each of the grooves 30b is formed with a groove 33 having a width substantially the same as the vertical dimension of the fixing member (rod) 3 made of a square pipe material to which the fixing fitting 21 is attached. These extending portions 30b are tapered such that the extending length from the holding portion 30a gradually decreases from the upper side to the lower side, and the claw portions 34, 34 are bent inside the tip portion thereof. Has been formed.

On the other hand, as shown in FIGS. 2 (c) and 2 (d), the wedge member 31 is formed by bending a metal plate into a substantially U-shape in cross section, and extends from the extending portion 30b of the metal fitting body 30.
The flat plate portion 31a has substantially the same width dimension as the inner spacing dimension of 30b (see FIG. 2B), and wedge portions 31b and 31b extending orthogonally from both end portions thereof. The wedge portion 31b has a taper shape in which the extension length gradually decreases from the upper side to the lower side, and the taper angle is the extension portion 30b of the metal fitting body 30 (see FIG. 2B). ) And the same angle. Further, as shown in FIG. 2E, a convex portion 35 protruding in a direction opposite to the extending direction of the extending portion 31b is formed at a predetermined position of the flat plate portion 31a of the wedge member 31. .

Next, the fixing metal fitting 2 having such a structure
A method of fixing the unwinding pipe 20 at a predetermined position on the ceiling will be described in No. 1. First, as shown in FIG. 3A, a channel material 37 for supporting the ceiling material 36 is used.
Then, the fixing member 3 having a rectangular cross section is fixed.

Next, the connection joint 24 of the unwinding pipe 20 is inserted into the holding portion 30a of the metal fitting body 30 of the fixing metal fitting 21. Then, as shown in FIG. 4, the locking projection 32 formed on the holding portion 30 a is engaged with the engagement groove 28 formed on the holding cylinder 27 of the connection joint 24. At this time, as shown in FIG. 4A or FIG.
The engaging groove 28 to be engaged with is appropriately selected according to the height at which the connection joint 24 is to be installed or the positional relationship with the surrounding obstacles 38a and 38b.

Subsequently, as shown in FIG. 3B, the grooves 33, 33 of the extending portions 30b, 30b of the metal fitting body 30 are applied to predetermined positions of the fixing member 3. At this time, the connection joint 24
It is needless to say that the metal fitting body 30 is positioned so that is located at a predetermined position in the horizontal plane. After that, the wedge member 31 is inserted between the claw portions 34, 34 and the fixing member 3 with the flat plate portion 31a facing the fixing member 3 side. And FIG.
As shown in (c), the wedge member 31 is further hammered in, for example. Then, when the convex portion 35 formed on the flat plate portion 31a reaches the lower side of the fixing member 3,
Since this gives a feeling of fitting or a sound is generated, the driving work is finished at this point.

In this way, the unwinding pipe 20 is
The connection fitting 24 is provided by the fixing metal fitting 21 having the above-mentioned configuration.
Is held at a holding portion 30a of the metal fitting body 30, and is fixed to a predetermined position of the fixing member 3. At this time,
As shown in FIG. 5, the connection projection 24 is fixed at a predetermined height by the engagement projections 32 of the metal fitting body 30 engaging the predetermined engagement grooves 28 formed in the holding cylinder 27 of the connection fitting 24. Has been done. Moreover, the holding cylinder 27 of the connection joint 24 is
The flat portion 27a is held between the holding portion 30a of the metal fitting body 30 and the fixing member 3, and the flat portion 27a is pressed against the fixing member 3, whereby the connection joint 24 is firmly fixed so as not to rotate in its axial direction. It is fixed to.

In the fixing structure of the unwinding pipe 20 described above,
A fixing metal fitting 21 for fixing the unwinding pipe 20 is composed of a metal fitting body 30 and a wedge member 31.
Is a substantially U-shape that includes a holding portion 30a that holds the connection joint 24 and a pair of extending portions 30b and 30b that extend from both ends thereof, and the extending portions 30b and 30b each have a groove. 33, 33 and claws 34, 34 are formed. Then, the connection joint 24 of the unwinding pipe 20 is inserted into the metal fitting body 30 and the groove 33,
The fixing member 3 is passed through 33, and the fixing member 3 and the claw portion 3
The wedge member 31 is fitted between the parts 4 and 34. In this way, the unwinding pipe 20 can be fixed at a predetermined position on the back of the ceiling. At the time of construction, the holding portion 30a of the metal fitting body 30
After passing the fixing member 3 through the grooves 33, 33 of the metal fitting body 30 with the connection joint 24 inserted therein, the wedge member 31
Just fit. Therefore, it is not necessary to screw the screw member as in the conventional case, and the fixing work can be performed with one touch, and the fixing work of the unwinding pipe 20 can be facilitated.

Further, a locking projection 32 is formed on the inner peripheral surface of the holding portion 30a of the metal fitting body 30, and the outer peripheral surface of the connection joint 24 to be inserted therein is spaced apart in the direction along the axis thereof. A plurality of engaging grooves 28, 28, ... Are formed. Accordingly, by appropriately selecting the engagement groove 28 into which the locking protrusion 32 is to be engaged, it is possible to fix the unwinding pipe 20 while avoiding obstacles such as other pipes in the ceiling. Moreover, for example, many unwinding pipes 20
Since the heights of all the connection joints 24 can be accurately aligned without measuring each one when fixing the
The work of fixing the unwinding pipe 20 can be further facilitated.

Further, the holding cylinder 27 of the connecting joint 24 is formed to have an octagonal outer shape in cross section. This allows
When the connecting joint 24 is fixed by the fixing metal fitting 21, the flat portion 27a of the holding cylinder 27 is fixed in a state of being pressed against the fixing member 3, whereby the connecting joint 24 is prevented from rotating in the axial direction. Can be suppressed. Therefore, when the sprinkler head S is attached to the socket portion 24a of the connection joint 24, the connection joint 24 can be reliably fixed even when a force acts around the axis thereof.

In addition to this, the flat surface portion 3 of the wedge member 31
The convex portion 35 is formed at a predetermined position of 1a. As a result, when the wedge member 31 is fitted to the predetermined position, a sound or the like is generated in which the projection 35 fits into the fixing member 3, so that the wedge member 31 can be fitted securely.

Although the holding cylinder 27 of the connecting joint 24 has a substantially octagonal shape in cross-section in the above embodiment, the shape is not limited to any particular shape, and may be equal to or less than the octagonal shape or may be larger than the holding cylinder 27. Any shape may be used, such as forming the flat portion 27a only at one place. Furthermore,
The holding cylinder 27 may be circular in cross section, and in this case,
The engaging grooves 28 having a certain depth may be radially arranged at regular intervals in the circumferential direction, and the fitting protrusions 32 may be formed on the metal fitting body 30 at positions corresponding thereto. Further, the wedge member 31 can also adopt another shape, for example, instead of forming the convex portion 35 on the fixing member 3 side, the wedge portion 31.
A groove in which the claw portions 34 and 34 are fitted may be formed in b and 31b. Further, the shape of the grooves 33, 33 formed in the metal fitting body 30 is not limited, and it may be a shape corresponding to the cross-sectional shape of the rod passed therethrough. Of course, this is not a groove but a hole. You can also In addition, it goes without saying that the fixing structure of the unwinding pipe 20 shown in the above embodiment can be applied not only to fixing the sprinkler head but also to fixing various pipes.

[0039]

As described above, according to the pipe fixing structure of the first aspect, the fixing metal fitting for fixing the pipe is composed of the metal fitting body and the wedge body, and the metal fitting body is connected. A holding portion for holding the joint, and a substantially U-shape having a pair of extending portions extending from both ends of the holding portion, wherein a groove or a hole and a claw portion are formed in both extending portions. did.
Then, while inserting the pipe connection joint into the holding part of the metal fitting body, pass the rod installed at a predetermined position through the groove or hole of the extension part, and fit the wedge member between the rod and the claw part. It was configured to be crowded. In this way, the pipe can be fixed in place. At the time of the construction, with the connection joint inserted in the holding portion of the metal fitting body, the rod or member installed at a predetermined position is passed through the groove or hole of the metal fitting body, and then the wedge member may be fitted therein.
Therefore, it is not necessary to screw the screw member as in the conventional case, and the fixing work can be performed with one touch, and the pipe fixing work can be facilitated.

According to the pipe fixing structure of the second aspect,
A retaining projection is formed on the inner peripheral surface of the holding portion of the metal fitting body, and a plurality of engaging grooves are formed at intervals on the outer peripheral surface of the connection joint. Accordingly, by appropriately selecting the engagement groove of the connection joint with which the locking projection of the fixing metal fitting is engaged, the pipe can be fixed while avoiding obstacles such as other pipes. In addition, for example, when fixing a large number of pipes, the positions of all the connection joints can be accurately aligned without measurement, so that the work of fixing the pipes can be further facilitated.

According to the pipe fixing structure of claim 3,
The outer peripheral surface of the connection joint has a polygonal shape in cross section. As a result, a flat surface portion is formed on the outer peripheral surface of the connection joint, and the flat surface portion is fixed by the fixing metal fitting while being pressed against the rod. Therefore, even when a force around the axis acts on the connection joint, the connection joint can be prevented from rotating in the axial direction, and the pipe can be reliably fixed.

According to the pipe fixing structure of claim 4,
The wedge side of the wedge member is provided with a convex portion that engages with the rod when the wedge member is fitted to a predetermined position.
As a result, when the wedge member is fitted to the predetermined position, the convex portion engages with the rod and makes a noise or a noise, so that the wedge member can be securely fitted.

[Brief description of drawings]

FIG. 1 is a half cross-sectional view showing a pipe used for a pipe fixing structure according to the present invention.

FIG. 2 is a view showing a metal fitting body and a wedge member of a fixing metal fitting used in the fixing structure.

FIG. 3 is a perspective view showing a method of fixing pipes by the fixing structure.

FIG. 4 is a vertical cross-sectional view showing a state in which a pipe is fixed by the fixing structure.

FIG. 5 is a perspective view showing an example of a conventional pipe fixing structure.

FIG. 6 is a perspective view showing another example of a conventional pipe fixing structure.

FIG. 7 is a perspective view showing still another example of a conventional pipe fixing structure.

[Explanation of symbols]

 3 fixing member (rod) 20 unwinding pipe 21 fixing metal fitting 22 flexible pipe 24 connection joint 28 engaging groove 30 metal fitting body 30a holding portion 30b extending portion 31 wedge member 32 locking protrusion 33 groove 34 claw portion 35 convex portion

Claims (4)

[Claims] 1. A structure for fixing a pipe having a connection joint at an end of a flexible pipe having flexibility to a predetermined position, wherein a fixing metal fitting for fixing the pipe is a metal fitting body. And a wedge main body, and the metal fitting main body is formed in a substantially U shape including a holding portion that holds the connection joint and a pair of extending portions that extend from both end portions of the holding portion. Grooves or holes are formed in the extending portions, and inside the tip portions of these extending portions,
A claw portion is formed, the connection joint of the pipe is inserted into the holding portion of the metal fitting body, and the rod installed at a predetermined position is passed through the groove or hole of the extension portion, Further, the pipe fixing structure is characterized in that the wedge member is fitted between the rod and the claw portion. 2. The pipe fixing structure according to claim 1, wherein a retaining projection is formed on an inner peripheral surface of the holding portion of the metal fitting body, and a plurality of engaging grooves are formed on an outer peripheral surface of the connection joint. Is formed at intervals in a direction along the axis of the connection joint. 3. The pipe fixing structure according to claim 1 or 2, wherein the outer peripheral surface of the connection joint is polygonal in cross section. 4. The pipe fixing structure according to claim 1, wherein the wedge member is engaged with the rod member when the wedge member is fitted to a predetermined position on the rod side. A fixing structure for a pipe, which is provided with a matching convex portion.