JPH07213641A - Un-winding piping member and supporting device of head supporting body - Google Patents

Abstract

PURPOSE:To provide an un-winding piping member which is easy to install at the time of installing a fire-extinguishing piping using a dispersion head, is secure in coupling of a head supporting body to be mounted with a sprinkler head and a flexible pipe and has excellent corrosion resistance. CONSTITUTION:This un-winding piping member has the approximately cylindrical head supporting body 21 for supporting the sprinkler head 81 and the flexible pipe 61 for connection to be connected to the dispersion header. An annular groove 53 is formed on the inner periphery of the head supporting body 21 and one end 62A of an inner tube 61 of the flexible pipe 61 for connection inserted into the head supporting body 21 via an O-ring 64 is bulged by bulging to the annular groove 53, by which this end is connected and fixed. Then, the head supporting body and the flexible pipe are connected and fixed without using welding, etc., and, therefore, the corrosion resistance is good.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention supports a sprinkler head provided near a ceiling plate and supplies water for extinguishing fire from a dispersion header connected to a pipe in a ceiling space to the sprinkler head. The present invention relates to an unwinding piping member used in, and a supporting device for the head support in the unwinding piping member.

[0002]

2. Description of the Related Art For example, in a fire extinguishing system configured to sprinkle fire extinguishing water toward a room from a sprinkler head provided on the ceiling, pipes for the fire extinguishing water in the ceiling space are provided. The pipe is conventionally constructed by branching a branch pipe from a main pipe having a generally large diameter, and connecting the branch pipe with a dedicated connecting pipe for communicating with the sprinkler head at a predetermined interval, for example.

However, piping a connecting pipe that communicates from a branch pipe for each sprinkler head increases the amount of piping and the amount of construction, so in recent years, a so-called header construction method using a distributed header has attracted attention. This header construction method, connecting the dispersion header having a plurality of connection ports to the branch pipe, to each connection port, one end connection of a flexible pipe having flexibility, these flexible pipes are arranged radially, for example, The other end is connected to a corresponding predetermined sprinkler head.

Under such a header construction method, since it is necessary to make a large connection angle between the sprinkler head mounted in the vertical direction and the connecting pipe, conventionally, for example, one end of a flexible tube having flexibility is wound. As a delivery pipe, for example, a bend pipe bent at 60 ° or 90 ° is fixed, and at the other end, a connecting pipe having a structure in which a short pipe for connecting to the connection port of the dispersion header is fixed is used. It was All the connections between the connecting pipe, the connection port, and the sprinkler head are based on screwing, and most of the pipes are connected with a malleable cast iron pipe joint.

[0005]

However, as described above, it is not easy to work by connecting the connecting pipe having the bend pipe fixed to one end to the connecting port of the dispersion header in a narrow ceiling space. Poorly, the efficiency was lowered and the construction period was lengthened. Especially when the distance between the dispersion header and the sprinkler head setting position becomes long and the length of the connecting pipe itself becomes correspondingly long, the other end of the connecting pipe having a heavy bend pipe at one end It was extremely inconvenient to screw the so on. Moreover, the screw-in type malleable cast iron pipe joint must be prepared in accordance with the place of use, and the cost becomes high, which is not satisfactory.

On the other hand, there is a problem with the connecting portion itself between the unwinding tube and the flexible tube. That is, generally, the unwinding tube and the flexible tube are fixedly joined by welding, but the thickness of the flexible tube is
For example, an extremely thin tube of about 0.3 mm is used, whereas the unwinding tube is thicker. If such materials having different thicknesses are fixedly bonded by welding, the transformation of the composition due to high heat deteriorates the strength of the welded portion, and corrosion is likely to occur, which may cause fracture. In addition, for those that flare join the pipe ends of thin stainless steel pipes, increase in the number of parts due to flare joining,
This leads to an increase in the number of processing steps such as shaving, which results in a significant increase in cost.

The present invention has been made in view of the above points, and in constructing the fire extinguishing pipe using the above-mentioned dispersion header, the construction is easy, and moreover, the sprinkler head and the flexible pipe are easily coupled. Robust,
It is an object of the present invention to provide an unwinding piping member that is also excellent in corrosion resistance and solve the above problems.

Furthermore, in the present invention, the head support itself to which the sprinkler head is connected is also newly constructed, and when the head support is supported by a support material such as a channel material arranged in the ceiling space. It is also an object of the present invention to newly construct a support device for a head support to be used to improve workability of piping work in a fire extinguishing facility using a sprinkler head.

[0009]

To achieve the above object, first of all, according to claim 1, a dispersion header supporting a sprinkler head provided near a ceiling plate and connected to a pipe in a ceiling space. Is a unwinding piping member used for supplying the fire extinguishing water from the sprinkler head to the sprinkler head, the substantially cylindrical head support having one end to which the sprinkler head is connected, and the other end of the head support. A flexible tube for connection, the other end of which is connected to the distribution header,
An annular groove is formed on the inner circumference of the other end of the head support, one end of the flexible tube for connection is inserted into the inner circumference of the other end of the head support, and an O-ring is provided on the outer circumference of the insertion end. Toward the other end inner peripheral wall of the head support, by bulging by, for example, bulging, etc., the head support and the flexible pipe for connection are connected, the unwinding piping member, Provided.

In this case, as described in claim 2, an annular recess for mounting an O-ring is formed on the outer periphery of one end of the connecting flexible pipe, and the O-ring is fitted in the annular recess. It may be a characteristic unwinding piping member.

The connection between the flexible connecting pipe and the dispersion header in each of the unwinding piping members is, as described in claim 3, provided with a tubular branch connector at the periphery of the branch connection port of the dispersion header, and The connecting end portion of the branch connecting body is provided with a flange portion that is opened in a tapered shape, and the other end portion of the connecting flexible pipe is provided with a ball seat portion having an annular dent portion outward in the axial direction, The collar portion and the ball seat portion are butted against each other through an O-ring attached to the recessed portion, and the housing material is tightened from the outer circumferences of the collar portion and the ball seat portion, thereby connecting the flexible tube for connection and the dispersion header. May be connected.

On the other hand, as for the connection of the sprinkler head to the head support, according to claim 4, a cylindrical socket is fixed to the connection portion of the sprinkler head, and the socket has one end portion of the cylindrical head support. A sliding body that is watertightly insertable into the insertion part and that can lock the socket inserted in the insertion part by sliding the outer circumference of the insertion part in the axial direction is provided on the outer circumference of the insertion part. There is provided a novel unwinding piping member, which is characterized in that the locking is performed when it is located at.

In this case, as described in claim 5, it is more preferable that the sliding member is always urged downward, and as described in claim 6, the head support above the insertion portion. Opposing flat portions may be provided on the outer periphery.

According to a seventh aspect of the invention, in order to facilitate the above-mentioned tightening work of the housing material, the housing material is constituted by two housing constituent members each having an inward concave portion having a substantially semi-arcuate shape. These housing constituent members are fixed to an appropriate band body, and a tightening member is provided between the ends of the housing constituent members located at both ends of the band body so that the ends of the housing constituent members can approach and separate from each other. An unwinding piping member is provided.

As the tightening member in this case, for example, as described in claim 8, a nut member fixed to an end portion of one housing component member and a bolt member loosely penetrating an end portion of another housing component member. You may comprise by.

Further, as described in claim 9, a bolt material is preliminarily allowed to freely penetrate the end portion of the other housing constituent member, and the loose projection protrusion is provided for preventing the retaining ring or the like from coming off. You may provide a stopper.

On the other hand, according to a tenth aspect of the present invention, as a supporting device for supporting the head support member in each of the unwinding piping members, the head member has a substantially short-angled tubular shape with both ends open, and the heads are provided on a pair of facing surfaces. A fixture having a hole through which the support body is insertable, a support member that is inserted between the openings of the fixture, and a receiver that is engageable with a support material such as a channel material arranged in the ceiling space. The fixing member is provided with a tightening unit that can be tightened and pressed against the inserted head support, and the receiving unit has a support opening into which the end of the support member can be inserted. A support device for a head support body is provided, in which a support piece for supporting an end portion of the support member is provided on a peripheral edge of the support opening.

In this case, as described in claim 11,
A plurality of incisions are formed on the plane of the receiving tool, and a line connecting the incision ends is defined as a folding curve, and the portion formed by the folding curve and the incision does not exceed 90 degrees with respect to the plane. The supporting opening may be formed by bending along the folding curve in a range.

[0019]

According to the present invention, when one end of the connecting flexible tube is bulged, the one end is extruded so that the annular groove formed on the inner circumference of the other end of the head support becomes a die. It is molded so that the flexible tube for connection and the head support are firmly fixed. At this time, the O-ring provided on the outer circumference of the insertion end of the flexible tube for connection is pressed between the two, so that the watertightness between the outer circumference of the insertion end and the inner peripheral wall of the head support is secured at the same time.

According to the second aspect of the present invention, an O-ring mounting annular recess is formed on the outer periphery of one end of the connecting flexible pipe, and the O-ring is fitted in the annular recess. The one end can be easily inserted into the inner circumference of the other end of the head support, and the O-ring can be easily arranged at a predetermined position.

According to the third aspect of the present invention, the connection and disconnection can be performed easily and quickly by tightening or loosening the housing material. Therefore, fire extinguishing pipes using the distributed header can be easily constructed, and work productivity is improved. By the tightening, the O-ring between the collar portion and the ball seat portion is pressed to ensure the watertightness, and a proper flexibility is achieved by the abutting of the collar portion having the tapered opening and the ball seat portion. Sex is also secured. Further, since the elements for constructing such a joint connection are the flange portion, the ball seat portion, and the housing material, they can be realized, for example, by subjecting a commercially available steel pipe or scrap pipe to a simple forming process, so that the cost is low. It becomes possible to suppress it.

According to the present invention, when the sprinkler head is mounted and connected to the head support, the slide body is pushed up by an appropriate tool or the like, and the socket integrated with the sprinkler head is inserted into the head support. Then, when the sliding body is returned downward, the socket is locked to the head support and the sprinkler head is fixed to the head support. Therefore, mounting and connection of the sprinkler head to the head support can be easily and quickly performed.

In this respect, according to the fifth aspect, since the sliding body is always urged downward, it is not necessary to return the sliding body to the lower side, and the pushing-up state of the sliding body by the tool or the like is released. By itself, the sprinkler head is fixed to the head support. Therefore, the workability is further improved.

According to a sixth aspect of the present invention, when a flat portion facing the head support is provided above the insertion portion, the flat portion facing the flat portion is fixed to the flat portion by an appropriate bracket or the like.
Claim 1 which is tightened and fixed by bolts and further described later.
By using the support device described in 0,11,
It is possible to easily and firmly support the channel material arranged in the ceiling space.

According to the seventh aspect, the housing member is tightened by placing the flange portion and the ball seat portion in the substantially semi-circular concave portion and bringing the ends of the housing constituting member close by the tightening member. It Also, since these housing constituent members are fixed to the band body,
In other words, the structure of the two members is a single member, and the portion of the band body between the housing members is, so to speak, a hinge member for both members. Therefore, the mounting and tightening of the housing material can be performed very easily and quickly on site.

According to claim 8, the tightening member comprises:
Since the nut member fixed to the end of one housing component and the bolt member that loosely penetrates the end of the other housing component are used, the tightening operation only requires tightening the bolt member. Therefore, workability is further improved.

According to a ninth aspect of the present invention, since the bolt material preliminarily penetrates an end portion of another housing constituent member, and a stopper for preventing disengagement is provided on the penetration projection portion, the bolt material is different. Since it is not detached from the housing constituent member, it is easy to handle and the workability is further improved.

According to the tenth aspect, the support member is supported in the support opening portion of the receiving member, while the head supporting member is inserted into the hole of the fixing member, and the head supporting member is flattened by tightening means such as a bolt material. The head support is easily supported and fixed by pressing the portion toward the support member side, for example.

In this regard, according to the eleventh aspect, by bending the portion formed by the folding curve and the cut, the portion forms a support piece. Therefore, it is easy to manufacture. Moreover, since this supporting piece is bent within a range not exceeding 90 degrees, it also functions as a pressing piece for pressing the supporting member, and as a result, the supporting of the supporting member is strengthened.

[0030]

Embodiments of the present invention will be described below with reference to the drawings. First, FIG. 1 is a partial sectional view of a distribution header 1 used in this embodiment, and FIG. At A
FIG. 3 is a sectional view taken along line A, and the main body 2 is formed by cutting a commercially available rectangular tube into a predetermined length. In this embodiment, the square tube is used as described above, but the present invention is not limited to this, and a round tube shape may be used, and not only a commercially available steel tube but also an unnecessary tube or a scrap tube can be used.

Both ends of the main body 2 are annularly shaped at the portions shown by the hatched portions in FIG. 1 by, for example, shrink fitting or appropriate press molding. A substantially tapered connecting member 3 having an outer periphery threaded to connect to the branch pipe is fixed to the annular portion at one end by welding, and a cap 4 is fixed to the annular portion at the other end by welding. It is closed.

Branch connections P _{1 to} P ₆ are provided at a total of 6 locations on the outer periphery of the main body 2 having such a configuration. The specific setting places are four places, one on each of the four outer peripheral faces near the cap 4, and two places, one on each of the pair of opposing faces on the outer periphery near the connecting member 3. Of course, as shown by the alternate long and short dash line in FIG. 1, P ₇ and P ₈ are respectively provided on the other facing surfaces on the outer periphery near the connecting member 3 so that the outer periphery near the connecting member 3 is the same as the outer periphery near the cap 4. There are 4 places, one on each of the four sides, for a total of P ₁
A total of eight branch connection body may be provided with a to P _8. In this way, this distributed header 1 can increase or decrease the number of branch connectors as necessary.

Since each of the branch connectors P _{1 to} P ₆ has exactly the same structure, the structure will now be described based on the branch connector P ₁ provided on the outer peripheral surface near the cap 4, and this branch connector P will be described. ₁ is a commercially available steel pipe or an unnecessary pipe, which is cut into a predetermined length by cutting it into a branch connecting pipe 11. Further, a flange portion 12 opened in a tapered shape is formed on the outer periphery of one end of the branch connecting pipe 11. It has a structure fixed by welding or the like. This collar portion 12 is also constructed by cutting a commercially available steel pipe, scrap pipe, or the like into a predetermined length and expanding one end of the pipe.

Then, through holes 13 having the same diameter as the inner diameter of the branch connecting pipe 11 are bored at the set locations in the main body 2, and the other end of the branch connecting pipe 11 is welded to the peripheral edge of the through hole 13. By being fixed by the branch connecting body P ₁
Is configured. The other branch connections P _{2 to} P ₆ are also constructed in exactly the same way as this branch connection P ₁ . The dispersion header 1 used in the present embodiment is configured as described above, but uses a fixing method such as welding, is constantly filled with water, and the like.
Considering that the factor of corrosion is large, this distributed header 1
The surface of the, for example, Kanigen plating (General American Transportation Co
rp. brand name).

Next, the structure of the head support in the present embodiment will be described with reference to FIG. 3. The head support 21 as a whole is obtained by appropriately subjecting a pipe material such as a commercially available steel pipe or scrap pipe to round cutting or press forming. The head support 2 has a substantially tubular shape obtained by
The reference numeral 1 designates, in order from the lower end thereof, an insertion portion 22 constituted by a large-diameter portion, a valve accommodating portion 23 having the same diameter as the insertion portion 22, a fixing portion 24 having a flat portion facing the outer periphery, and a flexible connecting portion described later. One end of the pipe is constituted by a connection receiving portion 25 connected and fixed to the inner circumference thereof.

An appropriate number of through holes are formed on the outer periphery of the insertion portion 22, and the ball 31 is inserted through the through holes.
It is configured to be able to project inside. A cylindrical coupler ring 32, which constitutes a sliding body in the present invention, is slidably provided on the outer periphery of the insertion portion 22 and is urged downward by a spring 33.

A projection 34 is formed on the inner circumference of the coupler ring 32, and a release portion 35 having a substantially tapered inner circumference is formed below the projection 34. There is. The coupler ring 32, which is normally urged downward by the spring 33, causes the ball body 31 to project into the insertion portion 24 by the projection 34, and resists the urging force of the spring 33. When is pushed up, the ball body 31 is positioned in the release portion 35.

A valve housing 42 of the built-in valve 41 is mounted in the valve housing portion 43 via an O-ring 43. As shown in the same figure, the built-in valve 41 has a cylindrical valve box 42 having a small-diameter opening 44 which serves as a flow path at its lower end surface.
And a valve body 45 capable of closing the opening 44. This valve body 45 has a guide cylinder 4 on its upper part.
6 has a shaft body 47 that freely penetrates the inside of the valve body 6, and a push-up member 48 is fixed to the lower portion of the valve body 45 via an appropriate mounting fitting. The valve body 45 is biased downward by an elastic member such as a coil spring, and normally closes the opening 44.

The connection receiving portion 25 is a portion continuing from the fixing portion 24, and is doweled at four places on the outer periphery (arrow X).
Is shown), and the locking projection 5 is provided on its inner circumference to serve as a stopper.
1 is formed. As shown in FIGS. 3 and 4, the locking projection 51 is formed on the inner circumference of the connection receiving portion 25.
An O-ring annular groove 52 and an annular groove 53 are formed in order from the side. Further, from the end of the connection receiving portion 25 to the outer periphery,
An annular groove 54 for connecting and fixing a flexible pipe for connection is formed.

The connection structure of the connection receiving portion 25 and the flexible tube 61 for connection having such a structure is as follows. First, the flexible tube 61 for connection according to the present embodiment
Is an inner tube 62 whose flexibility is given to the middle part by a bellows part and a spiral part,
The inner tube 62 is constituted by an outer tube 63 arranged on the outer circumference of the inner tube 62.
The tip portion 62a of A is expanded in diameter.

An O-ring 64 is fitted to the outer periphery of the insertion portion of the one end portion 62A and the portion corresponding to the O-ring mounting annular groove 52, and the outer periphery of the one end portion 62A and the insertion portion. An annular sealing member 65, for example, is provided in the portion, and the one end portion 62A as it is.
Is inserted into the connection receiving portion 25 of the head support 21, and then the entire insertion portion is bulged with respect to the inner peripheral wall of the connection receiving portion 25, the O-ring 64 becomes the O-ring annular groove 52.
It is pressed inside, and at the same time, it is extruded into the annular groove 53. Furthermore, the sealing member 65 is also pressed against the inner peripheral wall of the connection receiving portion 25.

Therefore, a connection structure which is extremely strong and excellent in watertightness can be realized. The tip 62 of the one end 62A
The diameter a is enlarged, and the front engagement projection 51 is formed on the inner circumference of the connection receiving portion 25 by doweling.
One end 62A until it is locked by this locking protrusion 51
By inserting, the O-ring 64 can be automatically made to correspond to the O-ring annular groove 52, and mechanization can be dealt with.

One end portion 62A of the inner tube 62
The configuration may be, for example, the one end portion 62A ′ shown in FIG. The one end 62A 'shown in the figure has an annular recess 66 for mounting an O-ring formed on the outer periphery thereof.
4 is fitted in this annular recess 66. With this configuration, the O-ring 64 is not displaced when the one end portion 62A ′ is inserted into the connection receiving portion 25.

In such a case, for example, if the one end portion 62A 'is expanded and then bright annealed, the annular recess 66 can be easily formed. In the connection process described above, the O-ring 64 is pressed into the O-ring annular groove 52, and the end portion 6
Although extrusion molding of 2A into the annular groove 53 was performed at the same time, of course, each may be bulged separately.
In this case, the O-ring 64 pressing degree can be set to the most appropriate degree regardless of the extrusion molding of the one end portion 62A into the annular groove 53.

Since the connection is fixed by bulging such as bulging, the outer diameter of the inner tube 62 can be smaller than the inner diameter of the connection receiving portion 25, and the inner tube 62 can be inserted, for example, in a substantially non-contact state. Therefore, for example, there is no possibility of damaging the resin lining or other plating processing performed on the inner circumference of the head support 21 due to the inserting operation.

After the inner tube 62 is connected and fixed to the inner circumference of the connection receiving portion 25 in this manner, the fixing means 67 such as an outer ring or an outer band is used.
By fixing the end portion of the outer tube 63 to the annular groove 54 on the outer periphery of the connection receiving portion 25, the connection and fixing of the connecting flexible tube 61 to the head support 21 side is completed.

The connecting and fixing of the other end of the connecting flexible tube 61 whose one end is connected and fixed to the head support 21 and the above-mentioned dispersion header 1 are realized as follows. It First, as shown in FIG. 6, the connecting pipe 68 is previously connected and fixed to the other end portion 62B of the inner tube 62 in the flexible connecting pipe 61. The connection and fixing at this time is as shown in FIG.
This is exactly the same as the case of connecting and fixing the head support 21 with the head support 21. That is, while pressing the O-ring 69, the other end 6
2B is bulged toward the inner circumference of the connecting pipe 68 by bulging or the like, and is extrusion-molded and fixed to the annular groove 70 on the inner circumference of the connecting pipe 68. After that, similarly, the end portion of the outer tube 63 is fixed to the annular groove on the outer circumference of the connecting pipe 68 by the fixing means 67 such as the outer ring and the outer band.

The connecting pipe 68 has a structure in which a ball seat portion 72 having an annular recessed portion 71 toward the outside is fixed to the outer circumference of the end portion by, for example, laser welding.

In this way, the flexible tube for connection 61 is connected.
The connection pipe 68 connected and fixed to the other end of the above and the respective branch connection bodies P of the distribution header 1 are connected and fixed. Next, the connection and fixing of the connection pipe 68 and the distribution header 1 to, for example, the branch connection body P ₁ will be described. First, the O-ring 73 is attached to the recessed portion 71 of the ball seat portion 72 of the connection pipe 68, and then the branch connection body. The collar portion 12 of P ₁ and the ball seat portion 29
And a housing member 76 having two housing constituent members 74 and 75 is covered from the outside of the collar portion 12 and the ball seat portion 72, and then the housing constituent members are fixed with hexagon socket bolts 77 and nuts 78. All that is required is to tighten the 74, 75 and secure the housing 35.

More specifically, the housing constituent members 74 and 75 have exactly the same structure, and by press molding, for example, as shown in FIG. 7 and FIG. Recesses 74a, 75a are formed, and clamp portions 74b, 74c, 75b, 75c are integrally formed at both ends of each housing constituent member 74, 75, respectively. These housing components 7
4 and 75 are fixed to one band body 79, respectively, but in the present embodiment, the band body 79 is fixed to the inner walls of the recesses 74a and 75a by, for example, welding.

Two bolts 77, 77 loosely penetrate the clamp portion 74b of the housing component 74, and retaining rings 80 are fitted to the protrusion portions of the bolt, respectively. It is designed not to leave. On the other hand, the clamp portion 7 of the housing constituent member 75
The nut 78 is fixed to 5b. Therefore,
Since the entire housing material 76 is configured as a single member, it is easy to handle, and since the bolt 77 is provided in the housing constituent member 74 in a rotation-free manner in advance,
It is extremely easy to work with.

As described above, the water-tightness of the connected portion is secured by the O-ring 73 which is first interposed between the flange portion 12 and the ball seat portion 72 and pressed by both. This connecting portion is flexible until the edge portion of the collar portion 12 abuts on the inner peripheral wall of the housing constituent members 74 and 75. Further, when compared with a conventional threaded joint, when a connecting flexible pipe having the same flexibility tolerance is connected, the flexibility of the connecting portion is large, so that the flexibility as a whole is larger than the conventional one. As a result, the flexibility of the layout of piping in the header method is large.

On the other hand, the head support 2 having such a structure
The sprinkler head 81 mounted and fixed to the No. 1 has a substantially disk-shaped heat-sensitive fuse 82 on the lower surface, and has a substantially inverted truncated cone shape as a whole. Then, as shown in FIGS. 3 and 9, eight openings 83 are formed in the inclined surface portion to communicate with the inner space of the sprinkler head 81. Then, as shown in FIG. 9, the sprinkler head 81 is mounted and fixed to the head support 21 at a position where the sprinkler head 81 is housed in the pair of opposed opening holes 83 when viewed from the lower surface, respectively. When this is done, through screw holes 84 are respectively formed at locations directly below the coupler ring 32 of the head support 21, and the screw 8 is formed in each through screw hole 84.
5 is screwed on.

A socket 87 is screwed and joined to the outer periphery of the connecting portion 86 of the sprinkler head 81 having such a structure. The socket 87 has an outer diameter that is slidable inside the insertion portion 22 of the head support 21, and an annular groove 88 is formed in the outer periphery near the upper end of the socket 87. An O-ring is formed in the annular groove 88. 89 is attached. And socket 8
An annular stopper 90 is fixed to the outer periphery of the lower end portion of 7.

Further, at a predetermined position of the socket 87, a receiving hole receiving hole 87a for receiving the protruding portion of the front ball body 31 into the insertion portion 22 is provided. At the position where the stopper 90 stops pushing up the socket 87, the receiving hole 87a is set so as to correspond to the through hole for projecting the ball 31 formed in the insertion portion 22. At the same time, the upper end of the socket 87 pushes up the push-up member 48 of the built-in valve 41 to release the closed state of the opening 44 by the valve body 45. Note that FIG. 3 shows a state in which the socket 87 integrated with the sprinkler head 81 is attached and fixed to the head support 21.

Next, the head support 21 is supported on the ceiling,
The fixing will be described with reference to FIG.
As shown in FIG.
It is fixed to the channel member 94 in the ceiling space by 3. It is to be noted that the ceiling board B is shown by a chain line in FIG.

That is, as shown in FIGS. 11 and 12, the fixture 91 has an outer shape obtained by cutting a rectangular tube as a whole, and has a nut 95 fixed to one side surface, and a nut 95 attached to the nut 95. The screw has a hexagon socket bolt 96, and holes 97 and 98 through which the front head support 21 can be inserted are formed on the upper and lower surfaces thereof, respectively.

On the other hand, the support member 92 is the fixing member 91.
It is made of a channel material that can be inserted into the opening on the side surface.

Further, as shown in FIGS. 13 and 14, the receiving member 93 is constructed by using a channel material that can be locked to the channel material 94, and is manufactured as follows. First, as shown in FIG. 13, the substantially central portion of the flat surface portion is first punched into a small rectangular shape, and the punched portion 9
9 is formed, four cuts 100, 101, 102, 103 of a predetermined length are provided from each corner of the punched part 99, and then each cut 100, 101, 102, 103 is formed.
A line connecting the outer ends of the is defined as a fold line (shown by a broken line in FIG. 13), and the substantially trapezoidal portion in which the hypotenuse is formed at each of the cuts is set to a range not exceeding 90 degrees, for example, 85 degrees outside. Make it bend. Then, the substantially trapezoidal portion is the support piece 10.
5, the substantially rectangular opening formed in the flat surface as a result of being bent forms the support opening 106.

First, the head support 21 is inserted into the holes 97 and 98 of the fixture 91, then the support member 92 is inserted horizontally, and then the bolt 96 is tightened to fix the head support 21 at its tip. When the portion 24 is pressed and the supporting member 92 presses it against the ring, the head support 21 is first fixed to the fixture 91. Bolt 96 at this time
Since the surface pressed by and the surface contacting the support member 92 are both flat portions of the fixed portion 24,
The position is fixed and the fixing is strong and easy.

In this state, both ends of the support member 92 are fitted into the support openings 106 of the receiver 93. After that, the receivers 93, 93 may be locked to the channel member 94 as they are.

In this case, since the supporting piece 105 is tilted inward by 5 degrees as a result, it functions as a pressing piece for the supporting member 92 and firmly supports the supporting member 92. Therefore, the supporting and fixing of the head support 21 supported in this way to the channel material 94 is extremely stable, and as described above, the work can be performed easily and quickly.

Next, in order to mount the sprinkler head 81 on the head support 21 which is supported and fixed as described above, the coupler ring 32 on the outer periphery of the insertion portion 22 is pushed up by an appropriate jig and the ball is moved. The body 31 is positioned at the release portion 35 to make the insertion portion 22 ready for insertion, and then the socket 87 integrated with the sprinkler head 81 is inserted into the insertion portion 22.

Then, the ball body 31 is projected into the receiving hole 87a of the socket 87, and when the pushing-up state by the jig is released in this state, the coupler ring 32 is automatically moved downward by the spring 33. Then, the ball body 31 projects into the receiving hole 87a by the protrusion 34, and the socket 87 is locked, and this locked state is maintained. As a result, the socket 87 is fixed in the insertion portion 22, and the mounting and fixing of the sprinkler head 81 to the head support 21 is completed. Therefore, the sprinkler head can be mounted simply and quickly as compared with the conventional screw-in mounting.

When the socket 87 is inserted, its upper end pushes up the push-up member 48, and the closed state of the opening 44 by the valve body 45 is released.
The flow path inside is opened, and the fire extinguishing water in the flow path reaches the sprinkler head 81 at the same time when the sprinkler head 81 is attached. Therefore, after the head support 21 is filled with water and a predetermined water pressure test is performed, the sprinkler head 81 can be directly mounted and fixed.

In this respect, conventionally, in order to prepare for a predetermined water pressure test, a plug or the like was previously attached, and after the test was completed, the inside of the pipe was once drained, then the sprinkler head was attached, and then the inside of the pipe was filled again. Therefore, according to the present embodiment, the number of man-hours required to reach the movable state of the sprinkler device can be reduced, and accordingly the work period can be shortened.

[0067]

According to the first aspect of the present invention, since the water-tight fixing of the connecting flexible tube and the head support is strong and the bulging fixing does not use welding, the material of the connecting portion does not change, For example, it does not adversely affect the anticorrosion plating applied to the connection portion. Further, even if an anticorrosive treatment such as a resin lining is applied between the outer peripheral wall of the connecting flexible tube and the outer peripheral wall of the head support body, it is not damaged. Therefore,
Corrosion resistance can be maintained for a long time.

According to the second aspect, it is easy to insert one end portion of the connecting flexible tube into the inner circumference of the other end portion of the head support, and it becomes easy to dispose the O-ring at a predetermined position. However, it is possible to cope with mechanization by using it together with an appropriate stopper such as a dowel driving as in the embodiment.

According to the third aspect, the connection between the dispersion header and the connecting flexible pipe is extremely easy, and the work productivity is good. Moreover, since the appropriate flexibility is ensured, the flexibility of the piping layout is also improved. Furthermore, since the elements for constructing such a joint connection can be manufactured by using, for example, a commercially available steel pipe or scrap pipe, the cost can be kept low.

According to the fourth aspect, mounting and connection of the sprinkler head to the head support can be performed easily and quickly.

According to the fifth aspect, since the sprinkler head is fixed to the head support only by releasing the push-up state of the sliding body, the workability is further improved and the mechanization can be dealt with. .

According to the sixth aspect, the channel material arranged in the ceiling space can be easily and firmly supported.

According to the seventh aspect, mounting and tightening of the housing material on site can be performed extremely easily and quickly. Moreover, since it is composed of one member as a whole, it is easy to handle. In this respect, according to claim 8, the tightening work only needs to be done by tightening the bolt member, so that the workability is further improved, and the member structure is simple and the commercially available bolt member and nut member are available. Because it is possible, it can be easily manufactured and the cost can be reduced.

Further, in the present invention, since the bolt material preliminarily loosely penetrates the end portion of the other housing constituent member and the looseness protrusion is provided with a stopper for preventing disengagement, handling and Workability is further improved.

According to the tenth aspect, the head support can be easily supported and fixed to the channel material, and is strong.

According to the eleventh aspect, the receiving member can be easily manufactured, and the supporting piece also functions as a pressing piece for pressing the supporting member, so that the supporting member is firmly supported.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional side view of a distribution header according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a partial side sectional view of a head support according to an embodiment of the present invention.

FIG. 4 is a partial cross-sectional view of a connecting portion between the head support and the flexible tube for connection in the embodiment of the present invention.

FIG. 5 is a partial cross-sectional view showing another configuration example of one end portion of the connecting flexible tube.

FIG. 6 is a partial cross-sectional view of a connecting portion between a connecting flexible pipe and a dispersion header.

FIG. 7 is a side view of the housing material used in the examples.

FIG. 8 is a partial cross-sectional plan view of the present housing material shown in FIG.

FIG. 9 is a bottom view of the sprinkler head used in the examples.

FIG. 10 is an explanatory view showing a state in which the head support body is fixed to the channel material of the ceiling portion in the embodiment of the present invention.

FIG. 11 is a plan view of the fixture according to the embodiment of the present invention.

FIG. 12 is a side sectional view of a fixture according to an embodiment of the present invention.

FIG. 13 is a front explanatory view showing a state before manufacturing the receiving tool in the example of the present invention.

FIG. 14 is a perspective view showing a state in which the receiving member is locked to the channel member in the embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Dispersion header 11 Branch connection pipe 21 Head support 22 Insertion part 24 Fixing part 32 Coupler ring 53 Annular groove 61 Flexible tube for connection 64 O-ring 76 Housing material 81 Sprinkler head 87 Socket 91 Fixing device 92 Supporting member 93 Receiving device 94 Channel Material P ₁ ~ P ₆ Branch connection

Claims (11)

[Claims] 1. An unwinding pipe for supporting a sprinkler head provided in the vicinity of a ceiling plate and for supplying fire-extinguishing water from a dispersion header connected to a pipe in a ceiling space to the sprinkler head. A member, a substantially cylindrical head support having one end to which the sprinkler head is connected, one end connected to the other end of the head support, and the other end connected to the dispersion header. A flexible tube for connection, wherein an annular groove is formed on the inner circumference of the other end of the head support, and one end of the flexible tube for connection is inserted into the inner circumference of the other end of the head support. An O-ring is provided on the outer periphery, and the insertion end is bulged toward the inner peripheral wall of the other end of the head support to connect the head support to the connecting flexible tube. To, unwinding piping member. 2. An outer circumference of one end of the flexible pipe for connection,
The unwound piping member according to claim 1, wherein an annular recess for mounting an O-ring is formed, and the O-ring is fitted in the annular recess. 3. A tubular branch connecting body is provided on the periphery of the branch connecting port of the dispersion header, and a brim portion that opens in a tapered shape is provided at a connecting end portion of the branch connecting body. The end portion is provided with a ball seat portion having an annular recessed portion facing outward in the axial direction, and the collar portion and the ball seat portion are abutted to each other via an O-ring mounted on the recessed portion, and further, these The unwinding piping member according to claim 1 or 2, wherein the flexible pipe for connection and the dispersion header are configured to be connected by tightening the housing material from the outer circumferences of the flange portion and the ball seat portion. . 4. A cylindrical socket is fixed to a connection portion of the sprinkler head, and the socket is watertightly insertable into an insertion portion at one end of the cylindrical head support, and the outer circumference of the insertion portion slides in the axial direction. A sliding body capable of locking the socket inserted into the insertion section by moving is provided on the outer circumference of the insertion section, and when the sliding body is located below, the locking is configured. The unwound piping member according to claim 1, 2, or 3. 5. The unwinding piping member according to claim 4, wherein the sliding body is constantly urged downward. 6. The unwinding piping member according to claim 1, wherein opposing flat portions are provided on the outer periphery of the head support above the insertion portion. 7. A housing member is made up of two housing constituent members each having a substantially semi-circular recess toward the inside, and these housing constituent members are fixed to appropriate band members and are located at both ends of the band member. The tightening member which can freely approach and separate the end portions of the housing constituent members from each other is provided between the end portions of the housing constituent members. Unwinding piping member. 8. The tightening member is composed of a nut member fixed to an end portion of one housing component member and a bolt material loosely penetrating an end portion of another housing component member. The unwinding piping member according to claim 7. 9. The bolt member preliminarily loosely penetrates an end portion of another housing constituent member, and the loosening protrusion is provided with a stopper for preventing disengagement.
The unwinding piping member described in. 10. A support device for supporting a substantially cylindrical head support body having flat portions facing the outer circumference and to which a sprinkler head is connected, the support device having a substantially short-angle cylindrical shape with both ends open. None, a fixture having a hole through which the head support can be inserted in a pair of opposing surfaces, a support member that is inserted between the openings of the fixture, and a channel material disposed in the ceiling space And a supporting member that can be locked to a supporting member, and the fixing member is provided with a tightening unit that can be tightened and pressed against the inserted head support, and the receiving member is an end of the supporting member. A portion has a support opening portion that can be inserted, and a support piece that supports an end portion of the support member is provided on a peripheral edge of the support opening portion,
Head support device. 11. A plurality of incisions are formed in a plane of a receiver, and a line connecting the incised ends is defined as a folding curve, and a portion formed by the folding curve and the incision is 90 degrees with respect to the plane. 11. The support device for the head support according to claim 10, wherein the support opening is formed by bending along the folding curve within a range not exceeding 10.