KR100889060B1 - Height adjusting pipe member for sprinkler head - Google Patents

Abstract

The present invention relates to a height adjusting tube member for a sprinkler head, and after the construction of the sprinkler facility and the ceiling finish, the purpose of the sprinkler head to easily adjust the height.

To this end, the present invention, the connecting pipe is inserted into the coupling screw formed on one end, the other end is connected to the branch pipe of the fire fighting equipment; An adjustment pipe having a ring groove and a head coupling screw and inserted while sliding on an inner surface of the connection pipe; Rubber packing for sealing between the connection pipe and the control pipe; A height adjusting tube member for a sprinkler head having a tightening screw portion and a flange and including a nut coupled to a connecting pipe, wherein the packing seat surface is formed on the inner circumferential surface of one end of the connecting pipe to be inclined outwardly and the packing seat surface is formed. Forming an inclined end surface portion corresponding to the inclination of the packing seat surface on the outer peripheral surface of the rubber packing that is pressed toward, and inserting a quad ring in the ring groove formed on the upper portion of the adjusting tube, characterized in that to form a double sealed structure.

Sprinkler head, ceiling finish, nut, rubber packing, adjuster, connector,

Description

Height adjustment pipe member for sprinkler head {HEIGHT ADJUSTING PIPE MEMBER FOR SPRINKLER HEAD}

1 is a view showing the secondary assembly construction according to the height adjustment of the sprinkler head after the conventional ceiling finish.

2 is a view showing a height adjustment pipe member for a sprinkler head according to an embodiment of the present invention.

FIG. 3 is a view showing a butt weld in another embodiment of the connecting straight pipe in FIG. 2; FIG.

FIG. 4 is a view illustrating an insertion welding surface according to still another embodiment of the connecting straight pipe in FIG. 2. FIG.

FIG. 5 is a view showing an elbow connecting straight tube according to another embodiment of the connecting straight tube in FIG. 2; FIG.

6 is a view showing a butt weld in another embodiment of the elbow connecting straight tube in FIG.

Figure 7 is another embodiment of the elbow connection straight pipe in Figure 5 the insertion weld surface formed.

8 is a view showing a connection expansion pipe in another embodiment of the connection straight pipe in FIG.

FIG. 9 is a view showing a butt weld in another embodiment of the expansion connection in FIG. 8; FIG.

FIG. 10 is a view illustrating the insertion welding surface as another embodiment of the connection expansion pipe in FIG. 8; FIG.

FIG. 11 illustrates an elbow-type connection expansion as another embodiment of connection expansion in FIG. 8; FIG.

FIG. 12 is a view showing a butt weld in another embodiment of elbow connection expansion pipe in FIG. 11; FIG.

FIG. 13 is a view illustrating an insertion welding surface in another embodiment of the elbow connection expansion pipe in FIG. 11; FIG.

FIG. 14 is a view in which the adjusting tube and the sprinkler head which is a circular head are integrally formed in FIG.

FIG. 15 is a view in which the adjusting pipe and the sprinkler head which is a flush type head are integrally formed in FIG. 2; FIG.

FIG. 16 is a circular head, which is another embodiment of the sprinkler head in FIG. 2; FIG.

FIG. 17 is a view showing another embodiment of rubber packing in FIG. 2; FIG.

18 is a view showing a fixing bracket to which the elbow connector according to the present invention is attached.

19 is a view showing a joint for adjusting the height of the height adjustment pipe member for the sprinkler head according to the present invention.

<Explanation of symbols for main parts of the drawings>

60: height adjustment connector member 70: connector

71a, 71b: mating thread portion 72: packing seat

80: rubber packing 81: inclined cross section

82: vertical cross-section 90: nut

91: Tightening thread 93: Flange

100: adjusting tube 102: head coupling screw

103: Quad Ring 110: Sprinkler Head

112: head shaft screw 120: fixed bracket (bracket)

130: Joint 133: Screw Bar

138: Nut Wrench

The present invention relates to a height adjustment pipe member for a sprinkler head, and more particularly, after the construction of the sprinkler facility and the ceiling finish, the sprinkler head is made of a structure that is easy to adjust the height, easy for adjustment of the sprinkler head A height adjustment pipe member and a height adjustment joint.

The conventional sprinkler head is currently mainly constructed by a method as shown in FIG. 1, and is connected to a cast iron tee 30 by nipples 32: 32 a, 32 b and 32 c and cast iron elbows 34: 34 a and 34 b. Finally, the sprinkler head 12 is installed by the reddish 36 which is a malleable cast iron pipe fitting to the nipple 32c to be connected.

Once the sprinkler head 12 is installed, the ceiling finish 14 is then constructed on the ceiling slab. The sprinkler head 12 long exposed through the head hole 18 by the construction of the ceiling finish 14 is reassembled after adjusting the height so as to be in close contact with the head hole 18.

The height adjustment of the sprinkler head 12 marks 38 the height adjustment position on the nipple 32c exposed through the head hole 18 of the ceiling finish material 14. The marking nipple 32c is disassembled in the reverse order of assembly, and then the marking portion 38 is cut.

Then, after screwing the cut nipple 32c again and assembling again, the sprinkler head 12 is reassembled here, thereby completing the secondary assembly work according to the height adjustment, but the height adjustment work is inconvenient and cumbersome. There was a problem.

The sprinkler head shown in FIG. 1 is an elbow made of cast iron, an nipple, and an elbow and a reducer installed by using a cast iron reducer are connected to each other because welding is impossible. There was a problem that could not be diversified.

In addition, there was a problem in that the construction cost of the adjustment of the height of the head height through the second construction is a construction method that should be additionally paid about 2,500 won to 3,500 won to increase the construction cost.

The adjustment work through cutting and reassembling the adjustment pipe, which leads to an increase in the number of processes to increase the adjustment work time, the workman is required to meet the construction period, there was a problem that the adjustment maintenance cost increases.

The present invention has been proposed to solve the above problems of the prior art, an object of the present invention is to provide a sprinkler head height adjustment tube member that can facilitate the height adjustment of the sprinkler head after the ceiling finish is constructed.

Another object of the present invention is to provide a sprinkler head height adjustment tube member that allows the height adjustment of the sprinkler head to be made by a nut coupled to the connection pipe.

Still another object of the present invention is to provide a sprinkler head height adjustment tube member to which a height adjustment tube is fixed by a deformation of a rubber packing compressed by a coupling of a nut.

Still another object of the present invention is to provide a sprinkler head height adjustment pipe member which is adjusted by pushing or pulling the adjustment pipe inserted into the connection pipe after loosening the nut.

Still another object of the present invention is to provide a sprinkler head height adjustment tube member having a double ring inserted into an adjustment tube and a sealing structure formed by a rubber packing that is deformed by pressing with a nut.

It is still another object of the present invention to provide a sprinkler head height adjustment tube member in which two functions for adjusting the coupling force of the nut and the height adjustment of the sprinkler head are combined.

In order to achieve the above technical problem, the present invention, the connection pipe is inserted into the coupling screw portion formed on at least one end of the outer peripheral surface, the other end is connected to the branch pipe branched from the fire pipe; An adjustment tube having a ring groove formed on an upper outer circumferential surface and a head coupling screw formed on a lower inner circumferential surface and inserted while sliding on an inner surface of the connection pipe; A rubber packing which is in a ring shape and is in close contact with a lower end of the connecting pipe to seal between the connecting pipe and the adjusting pipe; A height adjusting tube member for a sprinkler head comprising a tightening screw portion coupled to a coupling screw portion of the connecting tube and a flange on which a washer is seated, and a nut coupled to the connecting tube, the inner peripheral surface of one end of the connecting tube, A packing seat surface that is formed to be inclined toward the outside, an inclined end surface portion is formed on the outer circumferential surface of the rubber packing pressed toward the packing seat surface, so as to correspond to the inclination of the packing seat surface, and in a ring groove formed at an upper portion of the adjustment pipe By inserting a quad ring, when the adjustment tube is moved freely sliding the inside of the connection pipe to be fixed to an arbitrary position by the nut, the quad ring inserted into the ring groove of the adjustment tube, and the pressure deformation by tightening the nut It is characterized by forming a double sealed structure by rubber packing.

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Hereinafter, with reference to the accompanying drawings a preferred embodiment of the present invention will be described in more detail.

2 is a view showing a height adjustment tube member for a sprinkler head according to an embodiment of the present invention.

The sprinkler head height adjustment pipe member 60 includes a connection pipe 70 installed in the branch pipe branched from the fire pipe; Rubber packing 80 is inserted into the lower end of the connecting pipe (70); A nut (90) coupled to the lower end of the connecting pipe (70); An adjusting tube 100 inserted through the nut 90 and inserted into the lower portion of the connecting tube 70; It is installed on the lower portion of the adjusting tube 100 and comprises a sprinkler head 110 is spraying the digestive water.

The connecting pipe 70 is a straight pipe, and includes coupling threads 71a and b formed above and below the outer circumferential surface thereof, and a packing seat 72 formed at an angle on the lower inner peripheral surface edge of the coupling screw portion 71b. . Since the connecting pipe 70 has a simple structure, the coupling pipe 70 can be quickly combined with or separated from other pipes or sprinkler heads.

The rubber packing 80 is formed in a ring shape, the inclined end portion 81 formed so that the outer circumferential surface is in contact with the packing seat surface 72 of the connection pipe 70, and the inner circumferential surface of the inclined end portion is the adjustment tube 100 and It comprises a vertical cross-section portion 82 formed to be in close contact. The rubber packing 80 is deformed by pressure to seal between the connection pipe 70 and the control pipe 100.

The nut 90 includes a tightening screw portion 91 formed to be coupled to the lower coupling screw portion 71a of the connecting pipe 70, and a flange 93 formed so that the washer is placed inside the tightening screw portion 91. It is done by The nut 90 is loosened or tightened by a tool to deform the rubber packing 80.

The adjustment tube 100 is formed with a ring groove 101 is formed on the upper end, the head coupling screw 102 formed on the lower inner peripheral surface, and a quad ring 103 inserted into the ring groove 101. The adjusting tube 100 is adjusted in length by moving the connecting tube 70 inside.

The sprinkler head 110 includes a flush head 111, a head coupling screw 102 of the adjusting pipe 100 to the flush head 111, and a head shaft screw part of a predetermined height such that the sprinkler head 110 is engaged with the head coupling screw 102. It is formed of (112). The sprinkler head 110 is coupled to the control pipe 100 to spray the digestive water.

FIG. 3 is a view showing a butt welded part as another example of a straight line connecting pipe in FIG. 2. The connecting pipe 70-1 is a straight pipe, and includes a packing seat surface 72 formed on an inner circumferential surface of a coupling screw portion 71b formed at a lower portion thereof, and a butt weld portion 73 formed to be connected to another connection pipe at an upper end thereof. It is done by This butt weld part 73 is used when welding connection with the connection pipe of the same diameter.

4 is a view illustrating an insertion welding surface in another embodiment of the connection straight pipe in FIG. 2. The connecting pipe 70-2 is a straight pipe, and a packing seat surface 72 formed on the inner circumferential surface of the coupling screw portion 71b formed at the lower portion thereof, and an insertion welding surface 74 formed to be inserted into and connected to another connecting pipe at the upper end thereof. It is made, including. The insertion welding surface 74 is a connection pipe to be connected by welding is inserted, so that the quick connection work.

FIG. 5 is a view showing an elbow connecting straight tube according to another embodiment of the connecting straight tube in FIG. 2. The connecting pipe 70-3 is an elbow tube formed with a packing seat surface 72 and a coupling threaded portion 71b on the lower inner and outer circumferential surfaces, and a coupling threaded portion 71a on the opposite upper peripheral surface. This elbow tube is used when straight connection is difficult.

FIG. 6 is a view showing a butt weld in another embodiment of the elbow connecting straight tube in FIG. 5; FIG. The connecting pipe 70-4 is an elbow tube formed with a packing seat surface 72 and a coupling threaded portion 71b on the lower inner and outer circumferential surfaces, and a butt weld portion 73 formed at an opposite end thereof. The formation of the butt weld 73 to the elbow tube can facilitate welding.

FIG. 7 is a view illustrating an insertion welding surface in another embodiment of the elbow connecting straight tube in FIG. 5. The connecting pipe 70-5 is an elbow tube formed with a packing seat surface 72 and a coupling threaded portion 71b formed on the lower inner and outer circumferential surfaces thereof, and an insertion weld surface 74 formed on the opposite upper inner circumferential surface. The welding can be made convenient because it is in a stable coupling state by the formation of the insertion welding surface 74 in the elbow tube.

FIG. 8 is a view showing a connection expansion pipe according to another embodiment of the connection straight pipe in FIG. 2. The connecting pipe (70-6) is an expansion screw portion (75) in which the coupling screw portion (71a) formed on the upper outer circumferential surface, the packing seat surface 72 of the inner and outer circumferential surface on the lower side opposite to the opposite side, and the outer diameter of the coupling screw portion (71b) are expanded. ) Is formed. This expansion pipe 75 is used when a connection pipe with a small outer diameter is installed.

FIG. 9 is a view showing a butt weld as another embodiment of the connection expansion pipe in FIG. 8. The connecting pipe 70-7 includes an expansion pipe portion 75 having a packing seat surface 72, a coupling screw portion 71b formed on a lower inner and outer circumferential surface, and a butt weld portion on an upper end opposite to the expansion pipe portion 75. 73 is formed. The expansion pipe portion 75 and the butt weld portion 73 is formed so that the outer diameter can be connected to the connection pipe and the other welding.

FIG. 10 is a view illustrating an insertion weld surface in another embodiment of the connection expansion pipe in FIG. 8. The connecting pipe 70-8 includes an expansion pipe portion 75 having a packing seat surface 72 and a coupling screw portion 71b formed on a lower inner and outer circumferential surface thereof, and a welding surface inserted into an upper end inner circumferential surface opposite to the expansion pipe portion 75. 74 is formed and formed. The formation of the expansion pipe portion 75 and the insertion weld surface 74 allows the outer diameter to be welded to other connecting pipes in a stable engagement state.

FIG. 11 is a view showing an elbow connection expansion pipe as another embodiment of the connection expansion pipe in FIG. 8. The connecting pipe 70-9 includes an expansion pipe portion 75 having a packing seat surface 72 and a coupling screw portion 71b formed on a lower inner and outer circumferential surface thereof, and a coupling screw portion 71a formed on an outer circumferential surface opposite to the expansion pipe portion 75. ) Is an elbow tube formed. The expansion pipe portion 75 and the coupling screw portion 71a are formed to be connected by screwing.

FIG. 12 is a view showing a butt weld in another embodiment of the elbow connection expansion pipe in FIG. 11. The connecting pipe 70-10 includes an expansion pipe portion 75 having a packing seat surface 72 and a coupling screw portion 71b formed on a lower inner and outer circumferential surface thereof, and a butt weld portion 73 at an end opposite to the expansion pipe portion 75. ) Is an elbow tube formed. Formation of the expansion pipe part 75 and the butt weld part 73 in this elbow type pipe | tube can be made to cope with difficult piping installation situation through a welding connection.

FIG. 13 is a view illustrating an insertion welding surface in another embodiment of the elbow connection expansion pipe in FIG. 11. The connecting pipe 70-11 includes an expansion pipe portion 75 having a packing seat surface 72 and a coupling screw portion 71b formed on the lower inner and outer peripheral surfaces thereof, and an inner welding surface insertion weld surface 74 opposite to the expansion pipe portion 75. ) Is an elbow tube formed. The formation of the expansion pipe portion 75 and the insertion welding surface 74 in this elbow type tube is to be connected by welding in a state where the connection pipe is stably inserted.

FIG. 14 is a view in which the adjusting tube and the sprinkler head which is a circular head are integrally formed in FIG. 2. The adjusting pipe 100-1 is formed by integrally forming a circular sprinkler head 113 at the lower end of the pipe formed in the ring groove 101.

And FIG. 15 is a view in which the adjusting pipe and the sprinkler head which is the flush type head are integrally formed in FIG. 2. The adjustment pipe 100-2 is formed by integrally formed flush sprinkler head 111 at the lower end of the pipe in which the ring groove 101 is formed.

The sprinkler head is formed in a circular, flush type to be installed according to the situation.

FIG. 16 is a view illustrating a circular head, which is another embodiment of the sprinkler head in FIG. 2. The sprinkler head 110 includes a circular head 113 and a head shaft screw 112 formed integrally with the circular head 113 to be coupled to the head coupling screw 102. The formation of the head shaft screw portion 112 facilitates the engagement and disengagement of the adjustment tube.

FIG. 17 is a view illustrating another embodiment of rubber packing in FIG. 2. The rubber packing (80-1) is formed in a ring-shaped two-stage cross-section (83) at a predetermined height so as to contact the packing seat surface 72 of the expansion pipe (75). This two-stage end face portion 83 brings about an enlargement of the close contact surface.

18 is a view showing a fixing bracket attached to the elbow connector according to the present invention. The fixing bracket 120 includes an attachment surface 121 attached to an elbow tube, a support 122 on which both sides of the attachment surface 121 are bent upward, and an upper end of the support 122 is outward. It comprises a bent mounting surface 123. The fixing bracket 120 makes the installation of the elbow tube stable.

19 is a view showing a joint for coupling the nut of the connector according to the invention. The joint 130 includes a screw bar 133 provided with support plates 131 and a handle 132 on both sides thereof, a shaft pipe 134 screwed to the screw bar 133, and a rotation handle on the shaft pipe 134. It is made by forming a nut wrench 138 on the upper portion of the large corrugated portion 136 is formed so that the support plate 131 is guided on the upper portion is installed (135).

In addition, in the coronal portion 136, a detection hole 140 for positioning of the slinker head 110 is drilled. The joint 130 makes it easy to loosen or tighten the nut in the state where the ceiling finish material is installed, and at this time, the height adjustment work in a state that stably supported the sprinkler head.

Hereinafter, the installation example and effect | action of this invention made as mentioned above are demonstrated.

The connection pipe 70 is installed to the branch pipe of the sprinkler facility by using the coupling screw part 71. The washer is placed on the coupling screw portion 71b formed at the lower portion of the connecting pipe 70, and the rubber packing 80 is placed in order to engage the nut 90.

The head shaft screw 112 has a circular or flush sprinkler head 110 in the adjustment pipe 100 in which the quad ring 103 is inserted into the ring groove 101, and the head coupling screw 71 b in the lower portion of the adjustment pipe 100. Combine using.

When the assembly is completed with the adjusting tube 100 and the sprinkler head 110, the adjusting tube 100 is properly pushed through the hole formed in the flange 93 of the nut 90, and when the nut 90 is tightened, the flange ( 93, the rubber packing 80 is deformed by the pressure transmitted in the washer 92 order.

The adjustment pipe 100 by the deformation of the rubber packing 80 is in close contact with the rubber packing 80 is fixed in a position adjusted in the connection pipe (70). If the sprinkler head 110 is installed in the adjustment pipe 100, the ceiling finish construction work covering the ceiling is then made.

When the ceiling finish is completed construction, the sprinkler head 110 is excessively exposed through the ceiling finish is adjusted to the same height as the ceiling finish.

The above-mentioned height adjustment work of the sprinkler head is adjusted using the joint 130. That is, in the state where the support plate 131 positioned in the coronal portion 136 of the joint 130 is fully retracted, the handle 132 is grasped and the nut 90 and the nut wrench 138 are combined to prepare for height adjustment.

In this state, the nut wrench 138 is rotated by the rotary knob 135 installed on the shaft tube 134 to loosen the nut 90 slightly to freely move the adjustment tube 100 up and down. Then, the rotary knob 135 is left as it is, so that the sprinkler head 110 is aligned with the ceiling finish line by the support plate 131, the knob 132 is pushed in or lowered to adjust the height.

When the height adjustment of the sprinkler head 110 is completed, the nut wrench 138 is rotated by the rotation knob 135 while the handle 132 is fixed. The nut 90 is coupled to the coupling screw portion 71b by the nut wrench 138 to deform the rubber packing 80. By the modification of the rubber packing 80, the adjusting pipe 100 is firmly fixed to the connecting pipe.

The control tube 100 and the connection tube 90 by the rubber packing 80, the rubber packing 80 is in close contact, and the airtightness of the control tube 100 and the connection tube 70 by the quad ring 103 is double Sealing performance is improved.

In the above described the present invention with reference to the embodiment shown in the drawings, but this is only an example, those skilled in the art can understand that various modifications and equivalent other embodiments are possible from this. There will be. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

As described above, according to the sprinkler head height adjustment connector member according to the present invention, there is an effect that can easily adjust the height of the sprinkler head without removing the ceiling finish after construction of the ceiling finish.

In addition, according to the present invention, the height adjustment of the sprinkler head has an effect that can be simplified by loosening or tightening the nut coupled to the connecting pipe.

In addition, according to the present invention, there is an effect that the height-adjusted adjusting tube is fixed to the increased contact pressure by the rubber packing deformed by the coupling pressure of the nut.

In addition, according to the present invention, there is an effect that can be easily adjusted by the method of pushing or pulling the adjustment tube inserted into the connecting pipe in the state of loosening the nut.

In addition, according to the present invention, there is an effect of double sealing by the quad ring inserted into the adjustment tube and the rubber packing pressure-deformed by the nut.

Claims (25)

delete delete delete delete An adjustment pipe 100 is inserted into a coupling screw portion formed at at least one end of the outer circumferential surface, and a connection pipe 70 connected to the branch pipe branched from the fire pipe; An adjustment tube (100) having a ring groove (101) formed on an upper outer circumferential surface and a head coupling screw portion (102) formed on a lower inner circumferential surface and inserted into the inner surface of the connecting pipe (70); A rubber packing (80) sealing a space between the connection pipe (70) and the adjustment pipe (100) in close contact with the lower end of the connection pipe (70) as a ring shape; It comprises a nut (91) coupled to the connecting pipe (70) having a tightening screw portion (91) coupled to the coupling screw portion of the connecting pipe (70), and a flange (93) on which the washer (92) is seated. In the height adjusting pipe member for the sprinkler head, On the inner circumferential surface of one end of the connecting pipe 70, a packing seat surface 72 that is inclined toward the outside is formed, On the outer circumferential surface of the rubber packing 80 that is pressed toward the packing seat surface 72, the inclined end surface portion 81 is formed to correspond to the inclination of the packing seat surface 72, Inserting the quad ring 103 into the ring groove 101 formed in the upper portion of the adjustment pipe 100, When the adjusting tube 100 is moved freely sliding the inside of the connecting tube 70 to be fixed in a certain position by the nut 90, the quad ring 103 inserted into the ring groove 101 of the adjusting tube 100 And a rubber packing (80) pressurized and deformed by tightening the nut (90) to form a double sealed structure. delete The method of claim 5, The connecting tube is a straight tube, but the packing seat surface 72 is formed on the inner peripheral surface of the coupling screw portion formed on the outer peripheral surface of one end, the butt weld portion 73 for welding to the branch pipe branched from the fire pipe Height adjustment pipe member for a sprinkler head, characterized in that is formed. The method of claim 5, The connecting pipe is a straight pipe, the packing seat surface 72 is formed on the inner circumferential surface of the coupling screw portion formed on the outer circumferential surface of one end, and the insertion welding portion for welding to the branch pipe branched from the fire pipe on the inner circumferential surface of the other end ( Height adjustment tube member for sprinkler head, characterized in that 74) is formed. The method of claim 5, The connecting pipe is an elbow type tube, the coupling screw portion is formed on the outer peripheral surface of both ends, the packing seat surface 72 is formed on the inner peripheral surface of either end, the sprinkler head height adjustment tube member. The method of claim 5, The connecting pipe is an elbow type tube, and a packing seat surface 72 is formed on an inner circumferential surface of a coupling screw portion formed on an outer circumferential surface of one end, and a butt weld portion 73 for welding to a branch pipe branched from a fire pipe at the other end thereof. Height adjustment pipe member for the sprinkler head, characterized in that is formed. The method of claim 5, The connecting pipe is an elbow-type pipe, and a packing seat surface 72 is formed on the inner circumferential surface of the coupling screw portion formed on the outer circumferential surface of one end, and an insertion welding for welding the branch pipe branched from the fire pipe to the inner circumferential surface of the other end. Height adjustment tube member for the sprinkler head, characterized in that the surface 74 is formed. The method of claim 5, The connecting pipe is a straight pipe, the coupling screw is formed on the outer peripheral surface of both ends, one end of the sprinkler head height adjustment tube member, characterized in that the one end formed with the packing seat surface 72 is expanded. The method of claim 5, The connecting pipe is a straight pipe, the packing seat surface 72 is formed on the inner peripheral surface of the coupling screw portion formed on the outer peripheral surface of one end, the end is expanded, and the other end is welded to the branch pipe branched from the fire pipe Butt weld portion 73 for the sprinkler head height adjustment pipe member, characterized in that formed. The method of claim 5, The connecting pipe is a straight pipe, the packing seat surface 72 is formed on the inner peripheral surface of the coupling screw portion formed on the outer peripheral surface of one end, the end is expanded, the branch pipe branched from the fire pipe on the inner peripheral surface of the other end Height adjustment pipe member for a sprinkler head, characterized in that the insertion welding surface 74 for welding is formed. The method of claim 5, The connecting pipe is an elbow-type pipe, the coupling screw is formed on the outer peripheral surface of both ends, the height adjustment pipe member for the sprinkler head, characterized in that the one end formed with the packing seat surface 72 is expanded on the inner peripheral surface. The method of claim 5, The connecting pipe is an elbow-type pipe, and a packing seat surface 72 is formed on the inner circumferential surface of the coupling screw portion formed on the outer circumferential surface of one end, and the end thereof is expanded, and the other end is welded to the branch pipe branched from the fire pipe. Butt weld portion 73 for sprinkler head height adjustment tube member characterized in that it is formed. The method of claim 5, The connecting pipe is an elbow-type pipe, and the packing seat surface 72 is formed on the inner circumferential surface of the coupling screw portion formed on the outer circumferential surface of one end, the end of which is expanded, and the branch pipe branched from the fire pipe on the inner circumferential surface of the other end. Height adjustment pipe member for a sprinkler head, characterized in that the insertion welding surface 74 for welding to the formed. The method of claim 5, Height adjustment tube member for the sprinkler head, characterized in that the adjustment tube is formed integrally with the sprinkler head. delete delete delete delete delete delete delete

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