JP2783966B2 - Sprinkler piping and sprinkler piping construction method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire extinguisher sprinkler pipe provided in a space above a ceiling of a building and a construction method thereof, and more particularly to a fixing structure of a sprinkler head mounting pipe and a horizontal member.

[0002]

2. Description of the Related Art An example of a conventional structure for fixing a sprinkler head mounting pipe is disclosed in Japanese Utility Model Publication No. 59-935. The fixing structure described in this publication relates to a structure in which a sprinkler head is attached to a tip of a sprinkler head attachment pipe branched from a water supply main pipe piped behind a ceiling and piped down. This is to attach the tip of the sprinkler head mounting pipe to the ceiling surface at a predetermined position, bridge the channel steel on the ceiling base material that fixes the ceiling plate, and further on this channel steel A fixing member is fixed, and the sprinkler head mounting pipe is fixed to the fixing member by a screw-fastening fixing bracket.

[0003]

In the above fixed structure, a sprinkler head mounting pipe (hereinafter simply referred to as a mounting pipe).
With the tip of the fitting set at a predetermined position with respect to the ceiling surface, the screw of the fixing bracket is tightened, and the sprinkler head mounting pipe is fixed to the fixing material, so it takes time and effort to determine the dimensions of the mounting pipe tip and the ceiling surface There was a problem. Actually, this sizing depends on the thickness of the ceiling plate and the shape and size (type) of the sprinkler head, so that the work on site has become more complicated. Further, there has been a problem that when the screws of the fixing bracket are insufficiently tightened, when the pressure in the pipe fluctuates suddenly, or when a large external force acts on the mounting pipe, the mounting pipe moves from a predetermined position.

The present invention solves the above problems,
Provided is a sprinkler pipe fixed in such a manner that the mounting position of the sprinkler head with respect to the ceiling surface can be easily dimensioned and fixed, and the mounting pipe does not move in the axial direction or the radial (horizontal) direction, and a method of constructing the same. With the goal.

[0005] A sprinkler pipe according to the present invention comprises a sprinkler head mounting pipe having a locking recess at a predetermined position on an outer surface, a transverse member substantially perpendicular to the sprinkler head mounting pipe, and at least a part of the sprinkler head mounting pipe. A fixing tool having an enclosing holding portion, a locking projection engaged with at least a part of a locking recess of the sprinkler head mounting tube, and a gripping portion mounted on the transverse member; The sprinkler head mounting tube is positioned at a predetermined position in the axial direction by the engagement of the stop projection. Specifically, a flexible pipe is connected to one end and a sprinkler head is connected to the other end, and a mounting pipe provided with a circumferential locking recess at a predetermined position on the outer surface, and a fixing material substantially orthogonal to the mounting pipe. A horizontal member, a retaining portion surrounding at least a part of an outer surface of the mounting tube, a locking convex portion engaging at least a part of the locking concave portion, and the horizontal member extending in a direction perpendicular to the axis from the holding portion. A fixing member having a grip portion to be mounted on the fixing member, and a fastening member for fixing the fixing member and the transverse member, and engaging the locking projection of the fixing device with the locking concave portion of the sprinkler head mounting pipe. This is a sprinkler pipe in which the sprinkler head mounting pipe is positioned at a predetermined position in the axial direction.

Further, according to the method of installing a sprinkler pipe of the present invention, at least a part of a sprinkler head mounting pipe having a locking recess at a predetermined position on an outer surface is surrounded by a holding portion of a fixture, and the sprinkler head mounting pipe is engaged. A step of engaging a locking projection formed on the fixing tool with at least a part of the retaining recess, a step of attaching a gripping portion of the fixing tool to the horizontal member, and attaching the fixing tool to the horizontal Fixing the sprinkler head mounting tube at a predetermined position in the axial direction.

In the above, a plurality of locking recesses formed in the mounting pipe are provided at appropriate intervals in the axial direction, so that even if the mounting position of the sprinkler head with respect to the ceiling surface changes, the locking recesses are formed. It is possible to select a locking combination of the locking projection and the locking projection so that it can be adjusted to a predetermined position. Note that the positions of the locking concave portion and the locking convex portion are predetermined, and the ceiling surface is determined by the distance from the holding portion of the fixture to the locking convex portion and the distance from the locking concave portion of the mounting tube to the sprinkler head. Is set so that the height of the sprinkler head with respect to the predetermined position is at a predetermined position. Therefore, the type and dimensions of the sprinkler head, the ceiling thickness, the ceiling base material, the channel steel, the height dimensions of the transverse member (fixing material), and the axial direction between the holding portion and the locking convex portion on the fixture side. It is necessary to consider each dimension. In addition, it is desirable that a wedge-shaped fastening member be interposed between the horizontal member and the grip portion.

[0008]

Since the present invention has the above construction, the fitting projection of the fixing tool is fitted into the locking recess of the mounting pipe and locked, and the mounting pipe is dimensioned simply by fixing it to the horizontal member as it is. Can be done naturally. In addition, when a plurality of locking recesses are provided at appropriate intervals, the shape and size (type) of the sprinkler head are determined by selecting the locking recess most suitable for the construction site and locking the locking projection. The mounting pipe can be fixed corresponding to a predetermined mounting position of the sprinkler head which changes depending on the thickness of the ceiling plate or the like.

The holding portion of the fixture is sandwiched so as to surround the mounting tube, and the locking concave portion and the locking convex portion are locked, and the grip portion is mounted on the horizontal member. In this state, when a tightening member, for example, a wedge-shaped tightening member is driven between the horizontal member and the grip portion, the fixture, the mounting pipe, and the horizontal member are easily tightened to each other to exert a reaction force and to be strong. Fixed to As a result, the mounting tube does not move axially or radially. Furthermore, when the wedge angle is set to 10 degrees or less, the frictional force acting on the wedge surface is large, and when the grip portion is formed into a hold arm shape, the action by elastic deformation also works and the fixing is loosened even when severe vibration is applied to the mounting pipe or the like. There is no such thing.

[0010]

An embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 to 3 show a first embodiment of the present invention. FIG. 1 is a perspective view showing a mounting state of a mounting pipe and a transverse member behind a ceiling, FIG. 2 is a side view of a fixing part, and FIG. It is a rear view. In FIG. 1, a flexible pipe 1b such as a bellows pipe made of stainless steel or a soft copper pipe attached to a water distribution pipe branched from a water supply main pipe behind a ceiling is connected to an upper end of the mounting pipe 1 via a joint 1a. On the other hand, a female screw is provided at the distal end portion of the mounting tube 1, and an embedded sprinkler head 4 is screwed therein. Then, a channel 22 is bridged on a ceiling base material 21 for fixing and suspending the ceiling 20, and a fixing member 23 is further bridged on the channel 22 and fixed by a mounting bracket 24. I have. The mounting tube 1 is fixed to the fixing member 23 using the fixing tool 5. As the fixing member 23, a channel steel or the like is used in addition to the square pipe as shown. The term “horizontal member” as used in the present specification refers to the fixing member 23, the channel steel 22,
Although the fixing member 23 generally includes the fixing member 23, the fixing member 23 will be described below as a horizontal member.

The mounting pipe 1 can be made of any suitable material and shape such as a steel pipe plastically processed, a cast pipe or a joint, or a combination thereof. Flexible tube 1b at upper end
And a connection part by a screw connection or a mechanical joint is provided. A female screw is usually formed at the lower end, and the sprinkler head 4 is screwed in and attached. A locking recess is provided on the outer surface appropriately above the lower end. In this embodiment, the groove 2 is used. Hereinafter, the locking concave portion will be described as a groove. This groove can be formed integrally in the case of casting, or in the case of a steel pipe, using a groove processing machine commonly used in general sites. This need not be provided over the entire outer periphery, but may be provided partially or discontinuously on the outer surface. Alternatively, a groove may be provided in the upper part of the mounting tube, and a structure in which a locking projection formed on the upper end of the holding part may be hooked similarly. But,
As shown in the figure, the provision at the lower portion does not restrict the fluid in the middle of the pipe, and is convenient in terms of strength and construction.

Reference numeral 5 denotes a fixing member made of sheet metal (hereinafter, the fixing metal may be a plastic material or the like), a holding portion 8 surrounding substantially half of the outer circumference of the mounting tube 1, and a direction perpendicular to the axis from the holding portion. The holding portion 10 has a holding portion 10a, 10b which is extended over the fixing member 23 and is attached thereto. As shown in FIGS. 2 and 3, the lower end of the holding portion 8 is bent inward at right angles to form a bent edge, and this edge 7 is caught in a range around a half circumference of the groove 2.
When viewed from above, the fixture 5 includes a holding portion 8 having a substantially semi-arc shape and a holding portion 10 following the holding portion 8, and is substantially U-shaped. Here, the holding portion 8 and the holding portion 10 may be slightly smaller than the diameter of the mounting tube 1 and pushed in against the elastic force to be held by the elastic force. As shown in the figure, the side surface of the gripping portion 10 is cut out at a substantially middle portion of the flat plate according to the shape and size of the fixing member 23, and
Hold arms 10a and 10b are formed so as to sandwich 23, and the front ends of the hold arms 10a and 10b are provided with bent hook portions 10c and 10d inside. These have a slight taper from the upper hook portion 10C toward the lower hook portion 10d, and are formed so that a tightening member described below can be easily inserted and the tightening force increases.

Reference numeral 11 denotes a fastening member. In this embodiment, both ends of the steel plate are bent at substantially right angles, and the bent portions enter the gaps of the above-described hooks on the fixture side. The wedge-shaped member has one surface in the longitudinal direction with a small inclination of about 10 ° or less. Also, if a hole is made in a part of the body of the fastening member, it can be easily knocked out by using the hole when the driving is failed and the hole is to be pulled out. It should be noted that wood may be used in place of the steel plate, or may have no slope or taper.

Next, an operation for fixing the mounting pipe 1 to the fixing member 23 will be described. First, the sprinkler head 4
Is attached to the holding portion 8 of the fixture 5, and the bent edge 7 is hooked on the groove 2 provided corresponding to the mounting position of the sprinkler head with respect to the ceiling 20. In this way, predetermined dimensions are naturally obtained. Next, the holding arms 10a and 10b are fixed to the fixing material 23.
The mounting tube 1 is attached so that the outer diameter portion 9 of the mounting tube 1 is in contact with the side surface of the fixing member 23. Since the holding arm is divided into upper and lower parts and the end is open, it can be hung at an arbitrary place even after the fixing material is fixed with the mounting bracket, which is convenient. After that, the fixing material 23 and the hook part 10 of the hold arm
The wedge-shaped tightening member 11 is driven between the members c and 10d with a hammer or the like to fix the fixing member 5 to the fixing member 23. The fixing operation at this time can be performed very quickly and easily because the fastening operation is only performed by driving the fastening member. Therefore, the fastening member, the fixing member, the mounting tube, and the fixing fitting are fastened to each other and firmly fixed.
Further, even if a strong vibration is applied to the mounting pipe or the like after the fixing, the action by the elastic deformation of the hold arm also works, and the fixing does not loosen.

Next, a second embodiment shown in FIG. 4 will be described. In this embodiment, for example, it is possible to cope with the construction in which the ceiling plate is doubled, and the mounting pipe 1A is provided with two grooves 2a, 2b, 2c, 2d at appropriate intervals in the axial direction. That is, as shown in the above embodiment, the sprinkler head 4 is always positioned at a predetermined position with respect to the lower surface of the ceiling 20, in other words, the L dimension (Lb dimension in the drawing) is predetermined. 4, the height of the ceiling 20, the thickness of the ceiling 20, the height of the ceiling base material 21, the channel steel 22, the fixing material 23, and the axial dimension of the fixing bracket 5, and the position size of the groove. It suffices to determine this, but depending on the construction site, the L dimension may differ depending on the difference in the thickness of the ceiling and the type of the sprinkler head 4. That is, there are several types of thicknesses of the ceiling plate, and in some cases, the thickness of the ceiling plate is two. In the sprinkler head 4, there is a so-called exposure type sprinkler head which is attached to the front end of the mounting pipe by screwing the mounting pipe from the room side after fixing the mounting pipe behind the ceiling. Therefore,
The L dimension changes depending on the combination of the ceiling plate and the sprinkler head. Therefore, it is desirable to provide a plurality of grooves that are displaced in the axial direction as in this embodiment so that the displacement amount can be flexibly corrected. Actually, since there are approximately four types of L dimensions, the four grooves are provided at intervals of about 10 mm. In the case where there are a plurality of grooves, it is not easy to perform the groove processing on site, and it is preferable to use one integrally formed with a casting tube. At this time, the groove may be formed in a part of the outer periphery similarly to the above.

Next, a description will be given of the work of fixing the mounting pipe 1A to the fixing member 23. Fixing pipe 1A to fixing bracket 5
Of the mounting tube, and corresponding to the mounting position of the sprinkler head with respect to the ceiling 20, the groove 2a of the mounting pipe,
A combination of any one of 2b, 2c and 2d and the bent edge 7 of the fixture is selected. That is, in this embodiment, since the position of the hole corresponding to the predetermined Lb dimension is 2b, the predetermined dimension is naturally set by hooking the bent edge 7 in the groove 2b. For example, in the case of a double-ceiling sprinkler head with an exposed type, fitting with the groove 2d is selected as shown in FIG. Hereinafter, similarly, the fixing member 23 is sandwiched between the hold arms 10a and 10b, and is mounted so that the outer diameter portion 9 of the mounting tube 1 comes into contact with the fixing member 23. After that, the wedge-shaped tightening member 11 is driven between the fixing member 23 and the hook portions 10c and 10d of the hold arm with a hammer or the like to fix the fixing bracket 5 to the fixing member 23.

FIG. 5 shows a third embodiment in which the ceiling is doubled and an exposed sprinkler head 40 is mounted. In this case, the mounting position of the sprinkler head with respect to the lower surface of the ceiling changes to the dimension Ld due to the difference in dimensions between the ceiling plates 20 and 25 and the sprinkler head 40. However, if the engagement between the bent edge 7 and the groove is appropriately selected, that is, by selecting the groove 2d, this dimensioning is automatically performed. Even if the sprinkler head 40 is screwed in from the room side, the mounting tube 1 does not originally rotate due to the above-mentioned fixing, but a fitting portion of a projection and a hole is further provided between the mounting tube and the fixing bracket. If it is provided, it becomes even stronger against rotation.

FIG. 6 shows a fourth embodiment in which the fixing member 23 is a channel steel 26.
This shows a modified example in the case where. That is, the fixing bracket 51
The grip 10 is formed into an arm 10e that grips the right side surface of the channel steel 26 and an arm 10f that grips the lower end thereof, and the fastening member 1
The point that 1a is interposed between the outer surface 9 of the mounting pipe and the left side surface of the channel steel 26 is different from the above example.

FIG. 7 shows a fifth embodiment in which the holding portion of the fixing bracket 52 has a completely enclosed shape, and the bolt member 12 is used as a fastening member. Further, as another example of the fastening member, a part of the grip portion may be cut out, and the upper and lower grip portions facing each other may be tightened with a bolt material. Therefore, in these cases, after the gripping portion is passed through the fixing member 23 to determine the position, the bolt member 12 is screwed into the fixing member side to tighten and fix the fixing bracket 52, the mounting tube 1A, and the fixing member 23. This is the same as the embodiment described above. In the above-described five embodiments, the mounting pipe 1 is formed in a straight pipe shape. However, the use of a mounting pipe in which a bent connection portion is provided continuously above the fixing bracket 5 is also useful depending on the piping condition. It is. Further, instead of interposing a fastening member at the tip end portion of the grip portion as in the above example, it may be driven between the fixing member and the outer surface of the mounting pipe as shown in FIG. And in the range interposed in the gap between the gripper and the gripper. In addition to the above-described example, the holding portion may be formed by using a steel wire to form an enclosure of the holding portion, and integrally form the arm portion therefrom. It is sufficient that the minimum gripping portion has a portion that hangs on the upper surface of the fixing member.
In addition, other conventional methods can be used for the fastening member without being limited to the above example.

[0020]

According to the present invention, dimensioning of the sprinkler head mounting position, which has conventionally been troublesome, can be efficiently and easily performed by anyone. Moreover, this can be performed by selecting the most appropriate one according to the construction at the site, so that the usability is good. In the fixing operation, the fixing member can be easily fixed firmly without being displaced in the axial direction or the radial direction by driving the fastening member.

[Brief description of the drawings]

FIG. 1 is a perspective view around a sprinkler head mounting pipe showing a first embodiment of the present invention.

FIG. 2 is a side view of a fixing part of FIG. 1;

FIG. 3 is a side view of FIG. 2;

FIG. 4 is a side view of a fixing part showing a second embodiment of the present invention.

FIG. 5 is a side view of a fixing part showing a third embodiment of the present invention.

FIG. 6 is a side view of a fixing part showing a fourth embodiment of the present invention.

FIG. 7 is a side view of a fixing part showing a fifth embodiment of the present invention.

[Explanation of symbols]

 1, 1A: mounting tube 2: groove, locking concave portion 2a, 2b, 2c, 2d: groove, locking concave portion 3: tip end of mounting tube 4, 40: sprinkler head 5, 51, 52: fixing bracket 6: fixing Bracket body 7 ... Bending edge, locking projection 8 ... Holding section 10 ... Grip section 10a, 10b ... Hold arm 11 ... Wedge-shaped fastening member 12 ... Bolt-shaped fastening member 23 ... Fixed material

Continuation of front page (58) Field surveyed (Int.Cl. ⁶ , DB name) A62C 35/68

Claims (5)

(57) [Claims] A sprinkler head mounting pipe having a locking recess at a predetermined position on an outer surface ; a transverse member substantially perpendicular to the sprinkler head mounting pipe; a holding part surrounding at least a part of the sprinkler head mounting pipe; A fixing tool having a locking projection engaged with at least a part of the locking recess of the sprinkler head mounting pipe and a gripper attached to the transverse member; Sprinkling if necessary
This <br/> a sprinkler pipe, characterized in that positioning the Raheddo mounting tube in a predetermined position in the axial direction. 2. The sprinkler pipe according to claim 1, wherein a plurality of locking recesses are provided at appropriate intervals in an axial direction on an outer surface of the sprinkler head mounting pipe. 3. The sprinkler pipe according to claim 1, further comprising a fastening member interposed between the horizontal member and the holding portion of the fixture. 4. The fixing of the sprinkler head mounting tube and the transverse member by enclosing at least a part of the sprinkler head mounting tube having a locking concave portion at a predetermined position on an outer surface with a holding portion of a fixture, and the sprinkler head mounting tube. Engaging a locking projection formed on the fixing tool with at least a part of the locking recess of the fixing tool, attaching a grip portion of the fixing tool to the transverse member, and fastening the fixing tool by a fastening member.
The have a, a process of fixing to the transverse part Supurinku
A method for constructing a sprinkler pipe , comprising positioning a head at a predetermined position in an axial direction . 5. A plurality of locking recesses formed in the sprinkler head mounting pipe at appropriate intervals in the axial direction, and the locking recesses are appropriately provided corresponding to mounting positions of the sprinkler head with respect to a ceiling surface. 5. The method according to claim 4, further comprising the step of selecting an engagement combination of the concave portion and the locking convex portion.