KR20190030147A - a flexible pipe connecting device for sprinkler firefighting - Google Patents

Abstract

The present invention relates to a flexible pipe connection device for a firefighting sprinkler, to connect a flexible pipe between a sprinkler main pipe and a reducing elbow for installing a sprinkler head. According to one embodiment of the present invention, the flexible pipe connection device for a firefighting sprinkler comprises: a socket having a first mounting groove formed on the inner circumference of a first coupling cylindrical part formed on one side; an elbow having a second mounting groove formed on the inner circumference of a second coupling cylindrical part formed on one side; a flexible pipe connected to allow both ends to communicate with the socket and the elbow, respectively, and having a wrinkle part formed on a middle side; first and second O-rings mounted on the outer circumference of both the ends of the flexible pipe to be closely attached to the inner circumference of the first and second mounting grooves, and sealing a gap in a connection portion between the socket and the flexible pipe, and a gap in a connection portion between the flexible pipe and the elbow; and first and second stoppers to fit a coupling part, which is flexibly deformed by a slit formed in a radial direction when both the ends of the flexible pipe are coupled to the first and second coupling cylindrical parts, in the first and second coupling cylindrical parts, and to prevent the first and second O-rings and both the ends of the flexible pipe from being separated from the socket and the elbow by a locking step formed in the coupling part to be coupled to a locking groove formed on the inner circumference of the first and second coupling cylindrical parts.

Description

{A flexible pipe connecting device for sprinkler firefighting}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a sprinkler expansion joint pipe connection apparatus, and more particularly, to a sprinkler expansion joint pipe connection apparatus for connecting a sprinkler expansion pipe for a sprinkler head main pipe and a re- .

Generally, fire suppression devices have been developed and used so that fire can be suppressed effectively and efficiently at the early stage when a building is raised in size and size.

That is, as a new type of fire suppression device is put to practical use and popularized, a sprinkler is installed in the building so that high pressure water (fire water) can be sprayed on the ceiling of each building floor to suppress the fire.

In order to install the sprinkler on the ceiling of the building, a main water supply pipe for supplying water to the inside of the ceiling is installed, and a sprinkler is connected to the main water supply pipe by a connection pipe connecting a plurality of branch water supply pipes, It is possible to suppress the fire by intensively watering the digested water.

That is, a flexible joint which can be flexibly bent so as to connect the branch water supply pipe to the sprinkler and is formed of a metal material is used to supply the fire extinguishing water to the fire generating portion.

Although not shown in the drawings, the flexible joint for a sprinkler disclosed in Registration Utility Model No. 0118091 includes a corrugated tube formed by bending a spiral shape between straight tubes formed at both ends and deforming in shape;

And a connecting rapier which is provided with a coupling nut on a straight pipe, wherein an insulation part is provided on the outer circumference of the bellows pipe to insulate the insulation coating layer by a fixing means.

Registration Utility Model No. 0118091 can not cope with the CPVC main pipe, so there is a problem that another adapter must be used.

Korean Patent Registration No. 10-1346722 (Registered on December 24, 2013) discloses a fire-extinguishing piping and its manufacturing method.

Accordingly, the embodiment of the present invention is a spring for a fire-extinguishing sprinkler which is connected to a sprinkler main pipe and an elbow for installing a sprinkler head by a one-touch connection, thereby improving work efficiency and shortening work time It relates to the cooler extension pipe connection.

The embodiment of the present invention relates to a sprinkler sprinkler expansion joint pipe connection device for preventing fire water from leaking through a connection between a socket for connecting a expansion pipe to an elbow for installing a sprinkler main pipe or a sprinkler head, do.

The embodiments of the present invention relate to a fire-extinguishing sprinkler expansion joint pipe connection device capable of reducing the number of parts to reduce the cost and improving workability of connecting expansion joint pipes in a narrow space.

In order to achieve the above and other objects of the present disclosure, according to one embodiment of the present disclosure,

A socket having a first seating groove formed at a periphery of a first coupling cylinder formed at one side;

An elbow in which a second seating groove is formed in a peripheral edge of a second engagement cylindrical portion formed at one side;

An extension pipe connected to the socket and the elbow so as to communicate with each other at both ends thereof and having a wrinkle portion at an intermediate side thereof;

The first and second mounting grooves being provided at both outer peripheral edges of the expansion and contraction pipe so as to be in close contact with the periphery of the first and second mounting grooves and having a first connection portion between the socket and the expansion and contraction pipe, 2 O-rings;

Wherein when the both ends of the expansion and contraction pipe are coupled to the first and second coupling cylindrical portions, engaging portions that are elastically deformed by a slit formed in the radial direction are fitted to the first and second coupling cylindrical portions, A first stopper for preventing both ends of the first and second O-rings and the expansion and contraction pipe from being separated from the socket and the elbow by a locking protrusion formed on the coupling portion to be engaged with a locking groove formed in a circumference of the cylindrical portion; And a sprinkler pipe connected to the sprinkler pipe.

To achieve these and other aspects of the present disclosure, according to another embodiment of the present disclosure,

A socket in which a slit is formed in a first coupling cylindrical portion formed at one side in a radial direction and a first mounting groove is formed in a periphery of the first coupling cylindrical portion;

An elbow in which a slit is formed radially in a second engaging cylindrical portion formed at one side and a second seating groove is formed at a periphery of the second engaging cylindrical portion;

An extension pipe connected to the socket and the elbow so as to communicate with each other at both ends thereof and having a wrinkle portion at an intermediate side thereof;

The first and second mounting grooves being provided at both outer peripheral edges of the expansion and contraction pipe so as to be in close contact with the periphery of the first and second mounting grooves and having a first connection portion between the socket and the expansion and contraction pipe, 2 O-rings;

Wherein when the both ends of the expansion and contraction pipe are coupled to the first and second coupling cylindrical portions, the first and second coupling cylindrical portions are contracted and deformed by the slit, and a locking groove formed in the peripheral edge of the first and second coupling cylindrical portions And a pair of first and second fixing rings for preventing both ends of the first and second O-rings and the expansion and contraction pipe from being separated from the socket and the elbow.

To achieve these and other objects and in accordance with still further embodiments of the invention,

A socket having a first screw hole formed in a periphery of a first engaging cylindrical portion formed at one side thereof and a first seating groove formed outside the first screw hole;

An elbow in which a second screw hole is formed in a periphery of a second engaging cylindrical portion formed at one side and a second seating groove is formed outside the second screw hole;

An extension pipe connected to the socket and the elbow so as to communicate with each other at both ends, first and second screw portions corresponding to the first and second screw holes are formed at the outer circumferences at both ends,

Wherein the first and second threaded portions are mounted on the outer periphery of the expansion and contraction pipe adjacent to the first and second threaded portions so as to be in close contact with the periphery of the first and second seating grooves, And a first and second o-rings for sealing the connection between the socket and the expansion and contraction pipe and the gap between the expansion and contraction pipe and the elbow.

To achieve these and other objects and in accordance with still further embodiments of the invention,

A socket having a first seating groove formed at a periphery of a first coupling cylinder formed at one side;

An elbow in which a second seating groove is formed in a peripheral edge of a second engagement cylindrical portion formed at one side;

An extension pipe connected to the socket and the elbow so as to communicate with each other at both ends thereof and having a wrinkle portion at an intermediate side thereof;

The first and second mounting grooves being provided at both outer peripheral edges of the expansion and contraction pipe so as to be in close contact with the periphery of the first and second mounting grooves and having a first connection portion between the socket and the expansion and contraction pipe, 2 O-rings;

Wherein the body is coupled to the outer circumference of the expansion and contraction pipe outside the first and second O-rings, and when both ends of the expansion and contraction pipe are coupled to the first and second coupling cylinders, And first and second grip rings mounted on a locking groove formed in a periphery of the first and second seating grooves to prevent both ends of the first and second O-rings and the extension / contraction pipe from being separated from the socket and the elbow And a sprinkler connected to the sprinkler pipe.

To achieve these and other objects and in accordance with still further embodiments of the invention,

A socket having a first seating groove formed at a periphery of a first coupling cylinder formed at one side thereof, a screw hole formed outside the first seating groove, and a locking hole formed radially outwardly of the screw hole;

An elbow in which a second seating groove is formed at a periphery of a second coupling cylinder formed at one side and a screw hole is formed outside the second seating groove;

An extension pipe connected to the socket and the elbow so as to communicate with each other at both ends thereof and having a wrinkle portion at an intermediate side thereof;

The first and second mounting grooves being provided at both outer peripheral edges of the expansion and contraction pipe so as to be in close contact with the periphery of the first and second mounting grooves and having a first connection portion between the socket and the expansion and contraction pipe, 2 O-rings;

Wherein a screw portion corresponding to the screw hole is formed on one side of the outer periphery of the screw, and the engaging jaw corresponding to the locking hole is formed outside the screw portion in a U-shaped manner so as to have an elastic force, When the threaded portions of the first and second stoppers are screwed to the screw holes of the first and second coupling cylinders, the locking jaws are engaged with the locking holes so that the first and second o-rings And a first and second stoppers for preventing both ends of the expansion and contraction pipe from being separated from each other.

The embodiment of the present invention configured as described above has the following advantages.

By connecting the expansion pipe connected between the sprinkler main spindle and the sprinkler head mounting elbow with one-touch connection using the socket, it is easy to connect the expansion pipe and the labor cost is reduced due to the reduction of the labor cost. do.

Also, reliability is ensured by preventing leakage of water from the fire extinguisher through a socket connected to the sprinkler main pipe and a connection part of the expansion pipe connected to the elbow for installing the sprinkler head.

In addition, it is possible to reduce the number of parts (conventionally, two sockets are required, while one socket is used in the present specification), and the workability of connecting the expansion / contraction pipes in a narrow space can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a fire-extinguishing sprinkler expansion joint pipe connection apparatus according to a preferred embodiment of the present invention;
2 is an exploded perspective view of the main part of the connecting device shown in FIG. 1,
3 is a sectional view of a fire-extinguishing sprinkler expansion joint pipe connection apparatus according to another embodiment of the present invention,
FIG. 4 is an exploded perspective view of the connecting device shown in FIG. 3,
5 is a cross-sectional view of a fire-extinguishing sprinkler expansion and contraction pipe connecting apparatus according to another embodiment of the present invention,
FIG. 6 is an exploded perspective view of the main part of the connecting device shown in FIG. 5,
7 is a cross-sectional view of a fire-extinguishing sprinkler expansion joint pipe connection apparatus according to another embodiment of the present invention,
FIG. 8 is an exploded perspective view of the main part of the connecting device shown in FIG. 7,
FIG. 9 is a state in which the sprinkler expansion and contraction pipe is connected to the sprinkler head using the connection device shown in FIG. 1,
10 is a cross-sectional view of a fire-extinguishing sprinkler expansion joint pipe connection apparatus according to another embodiment of the present invention,
FIG. 11 is an exploded perspective view of the connecting device shown in FIG. 10,
12 is a cross-sectional view of a fire-extinguishing sprinkler expansion and contraction pipe connecting apparatus according to another embodiment of the present invention,
13 is an exploded perspective view of the main part of the connecting device shown in Fig.

Hereinafter, a fire-extinguishing sprinkler expansion joint pipe connecting apparatus according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIGS. 1 to 2 and 9, a fire-extinguishing sprinkler expansion joint pipe connection apparatus according to an embodiment of the present invention includes:

A first seating groove 34 is formed at the periphery of the first coupling cylindrical portion 10 formed at one side of the sprinkler main pipe a and a socket 11 Ashes may be used);

An elbow 13 (for example, a synthetic resin material may be used as an example) in which a second seating groove 35 is formed in the periphery of the second coupling cylindrical portion 12 formed at one side and the inside is hollow;

A water hammer or a stress generated in the sprinkler main pipe a is connected to the socket 11 and the elbow 13 in such a manner that both ends thereof are communicated with each other, A retractable pipe 15 (for example, a stainless steel material can be used) in which the pipe 14 is formed;

And is connected to the outer periphery of both ends of the expansion and contraction pipe 15 so as to be brought into close contact with the inner circumference of the first and second mounting grooves 34 and 35 and is connected to the connection portion between the socket 11 and the expansion and contraction pipe 15, A pair of first and second O-rings (16, 17) for sealing the gap of the elbow (13);

When the both ends of the expansion and contraction pipe 15 are coupled to the first and second coupling cylindrical portions 10 and 12, the engaging portion 19 is elastically deformed by the slit 18 formed at an equal interval in the radial direction, 12 are engaged with the first and second coupling cylinders 10 and 12 and are engaged with the locking groove 20 formed in the periphery of the first and second coupling cylinders 10 and 12, The first and second stoppers 16 and 17 and the first and second stoppers 15 and 16 for preventing both ends of the first and second O-rings 16 and 17 and the expansion and contraction pipe 15 from being separated from the socket 11 and the elbow 13 by the locking jaw 21 22, 23 (for example, a synthetic resin material may be used).

More preferably, it is formed between the first and second O-rings 16, 17 mounted on the above-mentioned expansion and contraction pipe 15, and the first and second O-rings (34, 35) And a boundary step 15a for increasing the contact area of the first and second O-rings 16 and 17 and increasing the sealing rate of the first and second O-rings 16 and 17.

The first and second O-rings 16 and 17 are connected to the expansion and contraction pipe 15 between the first and second stoppers 22 and 23. The first and second O- , And one or more first and second washers (33, 36) for preventing the two O-rings (16, 17) from flowing.

The first and second O-rings 16 and 17, the first and second washers 33 and 36, and the first and second stoppers 22 and 23 may be separately formed.

Reference numeral 22 in the figure denotes a spring cooler head formed on the outlet side of the elbow 13. Numeral 22a denotes a first stopper 22 for easily coupling the first stopper 22 to the first engaging cylindrical portion 10, .

Hereinafter, a fire-extinguishing sprinkler expansion joint pipe connection apparatus according to an embodiment of the present invention will be described in detail.

A technique of connecting the socket 11 to the sprinkler main pipe a to which the extinguishing water is supplied and connecting the sprinkler head b to the elbow 13 as shown in Figs. 1 to 2 and 9, Since the contents are used in this field, detailed description of their constitution will be omitted.

A first stopper 22 coupled to the first engaging cylindrical portion 10 of the socket 11 so as to connect one end of the extendable and contractible pipe 15 so as not to be detached and a second stopper 22 connected to the second engaging cylindrical portion 12 of the elbow 13, And the second stopper 23 connected to the other end of the expansion / contraction pipe 15 so as not to separate the other end of the expansion / contraction pipe 15 has the same configuration. Therefore, detailed description of the second stopper 13 coupled to the elbow 13 will be omitted.

A pair of first O-rings 16 are engaged with the first coupling cylinder 10 of the socket 11 and the first O-rings 16 elastically deformed by engaging one end of the expansion and contraction pipe 15 coupled to the outer periphery, Is in close contact with the inner periphery of the first seating groove (34) of the first coupling cylindrical portion (10).

At this time, by increasing the contact area of the first O-ring 16 with respect to the seating groove 34 by the boundary step 15a formed in the expansion / contraction pipe 15 between the first O- The sealing ratio by one O-ring 16 can be increased.

Since the coupling gap between the outer periphery of the expansion pipe 15 and the inner periphery of the first seating groove 34 of the first coupling cylindrical portion 10 is sealed by the first O-ring 16 as described above, 11 and the expansion / contraction pipe 15 can be prevented from leaking.

One end of the engaging portion 19 is engaged with the first engaging cylindrical portion 10 so as to fit the first stopper 22 coupled to the expansion and contraction pipe 15 to the outside of the first O- The engaging portion 19 slides and fits easily into the first engaging cylindrical portion 10 by the inclined surface 21a formed at one end of the locking jaw 21 when the engaging portion 19 is coupled to the inlet.

At this time, the engaging portion 19 of the first stopper 22 is elastically deformed by the slit 18 formed in the engaging portion 19 in the radial direction, so that it can be coupled to the inner circumference of the first engaging cylindrical portion 10.

That is, even if the outer diameter D of the locking jaw 21 is slightly larger than the inner diameter d of the first coupling cylindrical portion 10 (D> d), the coupling portion 19 is in contact with the first coupling cylindrical portion 10 After the outer diameter D of the locking jaw 21 is reduced by the slit 18 and then the locking jaw 21 is engaged with the first engaging cylindrical portion 10, The elastic restoring force is restored to the initial state.

Therefore, after the locking jaw 21 is coupled to the first engaging cylindrical portion 10, the locking jaw 20 of the engaging portion 19 is inserted into the locking groove 20 formed in the inner peripheral edge of the first engaging cylindrical portion 10 21 are concavely / concavely connected.

As described above, the first O-ring 16 and the expansion / contraction pipe 15 are connected to each other by the first stopper 22 coupled to the first seating groove 34 of the first coupling cylinder 10 and the locking groove 20, So that it can be prevented from being detached from the socket 11. [

10 and 11, the screw holes 10a and 12a formed at the inner circumferential inlet side of the first and second coupling cylinders 10 and 12;

And screw portions (22a, 23a) formed on the outer periphery of the first and second stoppers (22, 23) so as to correspond to the screw holes (10a, 12a)

The first and second stoppers 22 and 23 are connected to the socket 11 and the elbow 13 after both ends of the expansion and contraction pipe 15 are coupled to the first and second coupling cylinders 10 and 12, The threaded portions 22a and 23a of the first and second stoppers 22 and 23 are screwed into the threaded holes 10a and 12a of the two coupling cylindrical portions 10 and 12, It is possible to prevent the locking jaw 21 from being detached from the locking groove 20.

The first and second O-rings 16 and 17, the first and second washers 33 and 36, and the first and second stoppers 22 and 23 may be separately formed.

3 to 4, the fire-extinguishing sprinkler expansion joint pipe connection apparatus according to another embodiment of the present invention includes:

A slit 18 is radially formed in a first coupling cylindrical portion 10 formed at one side and connected to a sprinkler main pipe a and a first receiving groove 16a is formed in the periphery of the first coupling cylindrical portion 10 34) are formed, and a socket (11) in which the inside is empty;

A slit (not shown) is formed radially in the second coupling cylindrical portion 12 formed at one side, a second seating groove 35 is formed in the periphery of the first coupling cylindrical portion 12, An elbow (13) with an empty interior;

The water hammer or stress generated in the sprinkler main pipe (a) is canceled at the intermediate side so as to be able to be bent at the time of piping work, and is connected to both the socket (11) and the elbow (13) (For example, a stainless steel material is used);

And is connected to the outer periphery of both ends of the expansion and contraction pipe 15 so as to be brought into close contact with the inner circumference of the first and second mounting grooves 34 and 35 and is connected to the connection portion between the socket 11 and the expansion and contraction pipe 15, First and second O-rings (16, 17) for sealing the gap between the elbows (13);

The first and second coupling cylinders 10 and 12 are elastically deformed by the slit 18 when both ends of the expansion and contraction pipe 15 are coupled to the first and second coupling cylinders 10 and 12, The first and second O-rings 16 and 17 and both ends of the expansion and contraction pipe 15 are connected to the locking groove 20 formed in the periphery of the two coupling cylinders 10 and 12 from the socket 11 and the elbow 13, And first and second stationary rings (24, 25) for preventing disengagement.

More preferably, the first and second O-rings 16 and 17 are coupled to the expansion and contraction pipe 15 between the first and second fixing rings 24 and 25, And one or more first and second washers 33 and 36 for preventing the first and second O-rings 16 and 17 from coming into close contact with the first and second washers 33 and 36.

It is needless to say that the first and second O-rings 16 and 17, the first and second washers 33 and 36, and the first and second fixing rings 24 and 25 may be formed separately.

Hereinafter, a fire-extinguishing sprinkler expansion joint pipe connection apparatus according to another embodiment of the present invention will be described in detail.

A first fixing ring 24 coupled to the first coupling cylindrical portion 10 of the socket 11 to connect one end of the expansion pipe 15 so as not to be separated, The second fixing ring 25 connected to the second coupling cylindrical portion 12 of the elongated pipe 15 so as not to separate the other end of the expansion and contraction pipe 15 has the same configuration, The detailed description of the ring 25 is omitted.

When the outer diameter D of the first O-ring 16 is larger than the outer diameter D of the first O-ring 16 when the one end of the expansion and contraction pipe 15 equipped with the first O-ring 16 is fitted to the first coupling cylinder 10 of the socket 11, The first O-ring 16 is formed by the slit 18 formed in the first engaging cylindrical portion 10 at an equal distance in the radial direction even when the inner diameter d of the cylindrical portion 10 is larger than the inner diameter d of the cylindrical portion 10 And can be coupled to the inner surface of the first engaging cylindrical portion 10.

That is, when the first O-ring 16 mounted on the outer periphery of the one end of the expansion / contraction pipe 15 is engaged with the first coupling cylindrical portion 10, the first coupling cylindrical portion 10 is elastically deformed by the slit 18 The first O-ring 16 can be mounted on the inner periphery of the first engaging cylindrical portion 10.

When the first fixing ring 24 coupled to the expansion and contraction pipe 15 to the outside of the first O-ring 16 is coupled to the first coupling cylinder 10, the first coupling ring 10 ) Is stretched and deformed.

This makes it possible to fix the first retaining ring 24 to the locking groove 20 formed in the periphery of the first engaging cylindrical portion 10 (that is, the outer diameter of the first retaining ring 24, Is slightly larger than the inner diameter of the portion 10).

Therefore, it is possible to prevent the first O-ring 16 and the one end of the expansion and contraction pipe 15, which are made of a pair, from being separated from the socket 11 by the first retaining ring 24.

A slit 18 formed radially in the first and second coupling cylinders 10 and 12 and a locking groove 20 formed in the periphery of the first and second coupling cylinders 10 and 12, The construction of the fire-extinguishing sprinkler expansion joint pipe connection device according to another embodiment of the present invention, except for the first and second fixing rings 24 and 25 coupled to the first and second fixing rings 24 and 25, And the detailed description of these components will be omitted, and the same reference numerals will be used for the redundant components.

5 to 6, a fire-extinguishing sprinkler expansion joint pipe connection apparatus according to another embodiment of the present invention includes:

A first screw hole 26 is formed in the periphery of the first engaging cylindrical portion 10 formed at one side and connected to the sprinkler main pipe a so that the first screw hole 26 is formed outside the first screw hole 26 34) are formed, and a socket (11) in which the inside is empty;

A second screw hole 27 is formed in the periphery of the second engaging cylindrical portion 12 formed at one side and a second seat groove 35 is formed in the outside of the second screw hole 27, An elbow 13;

First and second screw portions 28 and 29 corresponding to the first and second screw holes 26 and 27 are formed in the outer periphery of both ends so as to communicate with both ends of the socket 11 and the elbow 13, (For example, a stainless steel pipe (stainless steel pipe)) having a wrinkle portion 14 (which serves to cancel the water hammer or stress generated in the sprinkler main pipe a) Steel material is used);

The first and second threaded portions 28 and 29 are mounted adjacent to the outer periphery of the expansion and contraction pipe 15 so as to be in close contact with the inner periphery of the first and second seating grooves 34 and 35, Sealing the gap between the socket 11 and the expansion and contraction pipe 15 and the connection between the expansion pipe 15 and the elbow 13 when the first and second screw portions 28 and 29 are screwed into the first and second screw portions 28 and 29, The first and second O-rings 16 and 17 are provided.

Although not shown in the drawing, it goes without saying that the first and second O-rings 16 and 17 may be formed in a divided manner.

Hereinafter, a fire-extinguishing sprinkler expansion joint pipe connection apparatus according to another embodiment of the present invention will be described in detail.

A first threaded portion 28 screwed to the first screw hole 26 of the socket 11 to connect one end of the expansion and contraction pipe 15 so as not to be detached, The second screw portion 29 is screwed to the second screw hole 27 of the first screw hole 27 so that the other end of the expansion and contraction pipe 15 is not separated. 29 will be omitted.

The first screw portion 28 formed at one end of the outer periphery of the expansion and contraction pipe 15 mounted on the outer periphery of the first O-ring 16 is inserted into the first screw hole 26 formed on the inner periphery of the first engagement cylinder portion 10, .

At this time, one end of the expansion / contraction pipe 15 from the socket 11 may be vibrated or impacted by applying an adhesive (so-called loctite) to the first screw portion 28 and then connecting the first screw portion 28 to the first screw hole 26 It is possible to prevent dislodgement.

At this time, the first O-ring 16 mounted close to the first screw portion 28 is prevented from being separated from the first engagement cylindrical portion 12 by the engagement protrusion 15a of the expansion / contraction pipe 15.

The first and second screw holes 26 and 27 formed at the periphery of the first and second coupling cylindrical portions 10 and 12 and the first and second screw holes 26 and 27 corresponding to the first and second screw holes 26 and 27, The construction of the fire-extinguishing sprinkler expansion and contraction pipe connection device according to another embodiment of the present invention, except for the first and second screw portions 28 and 29 formed at both ends of the sprinkler 15, And thus the detailed description of these components will be omitted, and the same reference numerals will be used to denote redundant components.

Referring to FIGS. 7 to 8, the fire-extinguishing sprinkler expansion and contraction pipe connection apparatus according to another embodiment of the present invention includes:

A first seating groove 34 is formed at the periphery of the first coupling cylindrical portion 10 formed at one side of the sprinkler main pipe a and a socket 11 Ashes may be used);

An elbow 13 (for example, a synthetic resin material may be used as an example) in which a second seating groove 35 is formed in the periphery of the second coupling cylindrical portion 12 formed at one side and the inside is hollow;

A water hammer or a stress generated in the sprinkler main pipe a is connected to the socket 11 and the elbow 13 in such a manner that both ends thereof are communicated with each other, A retractable pipe 15 (for example, a stainless steel material can be used) in which the pipe 14 is formed;

And is connected to the outer periphery of both ends of the expansion and contraction pipe 15 so as to be brought into close contact with the inner circumference of the first and second mounting grooves 34 and 35 and is connected to the connection portion between the socket 11 and the expansion and contraction pipe 15, First and second O-rings (16, 17) for sealing the gap between the elbows (13);

A body (not shown) is coupled to the outer periphery of the expansion pipe 15 to the outside of the first and second O-rings 16 and 17. Both ends of the expansion and contraction pipe 15 are connected to the first and second coupling cylinders 10, An outer end of the wing 32 elastically deformed when it is coupled to the body 12 is seated in a locking groove 20 formed in the periphery of the first and second seating grooves 34 and 35, And first and second grip rings 30 and 31 for preventing both ends of the first and second O-rings 16 and 17 and the expansion and contraction pipe 15 from being separated from the elbow 13 ).

More preferably, the first and second O-rings 16 and 17 are coupled to the expansion and contraction pipe 15 between the first and second grip rings 30 and 31, And one or more first and second washers 33 and 36 for preventing the first and second O-rings 16 and 17 from coming into close contact with the first and second washers 33 and 36.

Hereinafter, a fire-extinguishing sprinkler expansion joint pipe connection apparatus according to another embodiment of the present invention will be described in detail.

A first grip ring 30 which is seated in the locking groove 20 of the socket 11 so as to connect one end of the expansion and contraction pipe 15 so as not to be detached, The second grip ring 31 which is seated on the groove 20 and is connected so as not to allow the other end of the retractable pipe 15 to be detached is the same in construction as the second grip ring 31 The description is omitted.

A pair of first O-rings 16 are engaged with the first seating grooves 34 of the socket 11 and a first O-ring 16 elastically deformed by engaging one end of the expansion and contraction pipe 15 coupled to the outer periphery of the first O- And is in close contact with the inner periphery of the first seating groove 34.

As a result, the joint between the outer periphery of the expansion / contraction pipe 15 and the periphery of the first seating groove 34 is sealed by the first O-ring 16, so that the connection between the socket 11 and the expansion / It is possible to prevent the extinguishing of the water.

On the other hand, when the first grip ring 30 having the body coupled to the outer periphery of the expansion pipe 15 outside the first O-ring 16 is fitted into the first seating groove 34, The outer end of the wing 32 of the first seat 30 is seated in the locking groove 20 formed in the periphery of the first seat groove 34.

The first o-ring 16 and the one end of the expansion pipe 15 can be prevented from being separated from the socket 11 by the first grip ring 30 seated in the locking groove 20 and the expansion and contraction pipe 15 .

As described above, when the both ends of the expansion and contraction pipe 15 are connected to the first and second coupling cylinders 10 and 12 mounted on the outer periphery of the expansion and contraction pipe 15, The first and second O-rings 16 and 17 and the expansion and contraction pipe 15 are detached from the socket 11 and the elbow 13 as the wings 32 of the first and second O-rings 30 and 31 are seated in the locking groove 20 The construction of the fire-extinguishing sprinkler expansion and contraction pipe connection apparatus according to still another embodiment of the present invention, except for the first and second grip rings 30 and 31, A detailed description of these components will be omitted, and the same reference numerals will be used to denote redundant components.

12 and 13, a fire-extinguishing sprinkler expansion joint pipe connection apparatus according to another embodiment of the present invention includes:

A first seating groove 34 is formed at the periphery of the first coupling cylinder 10 formed at one side and a screw hole 10a is formed outside the first seating groove 34, A socket 11 through which a locking hole 10b (or may be formed through the locking groove) is formed in a radial direction;

A second seating groove 35 is formed at the periphery of the second coupling cylindrical portion 12 formed at one side and a screw hole 12a is formed outside the second seating groove 35, An elbow 13 on which a locking hole 12b is formed;

A stretch pipe 15 connected to the socket 11 and the elbow 13 so as to communicate with each other at both ends thereof and having a wrinkle portion 14 formed at an intermediate side thereof;

And is connected to the outer periphery of both ends of the expansion and contraction pipe 15 so as to be brought into close contact with the inner circumference of the first and second mounting grooves 34 and 35 and is connected to the connection portion between the socket 11 and the expansion and contraction pipe 15, First and second O-rings (16, 17) for sealing the gap between the elbows (13);

The threaded portions 22a and 23a corresponding to the screw holes 10a and 12a are formed on one side of the outer periphery and the engaging protrusions 22c and 23c corresponding to the locking holes 10b and 12b are formed outside the threaded portions 22a and 23a The first and second coupling cylinders 10 and 12 are connected to the expansion and contraction pipe 15 and the first and second coupling cylinders 10 and 12, When the screw portions 22a and 23a of the first and second stoppers 22 and 23 are screwed into the screw holes 10a and 12a of the first and second coupling cylinders 10 and 12 after the two ends of the first and second stoppers 22 and 23 are coupled, As the engaging protrusions 22c and 23c are elastically coupled to the holes 10b and 12b (that is, the engaging protrusions 22c and 23c are initially engaged with the locking holes 10b and 12b) After the engaging jaws 22c and 23c are engaged with the locking holes 10b and 12b after being elastically deformed toward the periphery of the first and second stoppers 22 and 23, 10, 12) to the outside of the outer periphery) And first and second stoppers 22 and 23 for preventing both ends of the first and second O-rings 16 and 17 and the expansion and contraction pipe 15 from being detached from the socket 11 and the elbow 13.

The first and second O-rings 16 and 17, the first and second washers 33 and 36, and the first and second stoppers 22 and 23 may be separately formed.

At this time, the screw holes 10a and 12a formed in the inner peripheral edge of the first and second coupling cylindrical portions 10 and 12 and the locking holes 10b and 12b formed radially outwardly of the screw holes 10a and 12a, 23a formed on the outer periphery of the first and second stoppers 22 and 23 so as to correspond to the screw holes 10a and 12a and a screw portion 22a and 23a formed on the outer periphery of the screw portions 22a and 23a, The configuration except for the latching jaws 22c and 23c formed is substantially the same as the configuration of the fire-extinguishing sprinkler expansion / contraction pipe connection device shown in Fig. 1, so that a detailed description thereof will be omitted, Are the same.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the disclosure as defined in the following claims. As will be understood by those skilled in the art.

10; The first engaging-
11; socket
12; The second engaging cylindrical portion
13; Elbow
14; Wrinkle portion
15; Expansion pipe
16; First O-ring
17; Second O-ring
18; Slit
19; Engaging portion
20; Locking groove
21; Locking jaw
22; The first stopper
23; The second stopper
24; The first stationary ring
25; The second stationary ring
26; The first screw
27; Second
28; The first threaded portion
29; The second threaded portion
30; The first grip ring
31; The second grip ring
32; Wing
33; The first washer
34; The first seating groove
35; The second seat
36; Second washer

Claims (8)

A socket having a first seating groove formed at a periphery of a first coupling cylinder formed at one side;
An elbow in which a second seating groove is formed in a peripheral edge of a second engagement cylindrical portion formed at one side;
An extension pipe connected to the socket and the elbow so as to communicate with each other at both ends thereof and having a wrinkle portion at an intermediate side thereof;
The first and second mounting grooves being provided at both outer peripheral edges of the expansion and contraction pipe so as to be in close contact with the periphery of the first and second mounting grooves and having a first connection portion between the socket and the expansion and contraction pipe, 2 O-rings;
Wherein when the both ends of the expansion and contraction pipe are coupled to the first and second coupling cylindrical portions, engaging portions that are elastically deformed by a slit formed in the radial direction are fitted to the first and second coupling cylindrical portions, A first stopper for preventing both ends of the first and second O-rings and the expansion and contraction pipe from being separated from the socket and the elbow by a locking protrusion formed on the coupling portion to be engaged with a locking groove formed in a circumference of the cylindrical portion; And a sprinkler pipe connected to the sprinkler. A socket in which a slit is formed in a first coupling cylindrical portion formed at one side in a radial direction and a first mounting groove is formed in a periphery of the first coupling cylindrical portion;
An elbow in which a slit is formed radially in a second engaging cylindrical portion formed at one side and a second seating groove is formed at a periphery of the second engaging cylindrical portion;
An extension pipe connected to the socket and the elbow so as to communicate with each other at both ends thereof and having a wrinkle portion at an intermediate side thereof;
The first and second mounting grooves being provided at both outer peripheral edges of the expansion and contraction pipe so as to be in close contact with the periphery of the first and second mounting grooves and having a first connection portion between the socket and the expansion and contraction pipe, 2 O-rings;
Wherein when the both ends of the expansion and contraction pipe are coupled to the first and second coupling cylindrical portions, the first and second coupling cylindrical portions are contracted and deformed by the slit, and a locking groove formed in the peripheral edge of the first and second coupling cylindrical portions And a first and a second fixing rings for preventing both ends of the first and second O-rings and the expansion and contraction pipe from being separated from the socket and the elbow. A socket having a first screw hole formed in a periphery of a first engaging cylindrical portion formed at one side thereof and a first seating groove formed outside the first screw hole;
An elbow in which a second screw hole is formed in a periphery of a second engaging cylindrical portion formed at one side and a second seating groove is formed outside the second screw hole;
An extension pipe connected to the socket and the elbow so as to communicate with each other at both ends, first and second screw portions corresponding to the first and second screw holes are formed at the outer circumferences at both ends,
Wherein the first and second threaded portions are mounted on the outer periphery of the expansion and contraction pipe adjacent to the first and second threaded portions so as to be in close contact with the periphery of the first and second seating grooves, And a first and second o-rings for sealing a connection portion between the socket and the expansion and contraction pipe and a gap between the expansion and contraction pipe and the elbow. A socket having a first seating groove formed at a periphery of a first coupling cylinder formed at one side;
An elbow in which a second seating groove is formed in a peripheral edge of a second engagement cylindrical portion formed at one side;
An extension pipe connected to the socket and the elbow so as to communicate with each other at both ends thereof and having a wrinkle portion at an intermediate side thereof;
The first and second mounting grooves being provided at both outer peripheral edges of the expansion and contraction pipe so as to be in close contact with the periphery of the first and second mounting grooves and having a first connection portion between the socket and the expansion and contraction pipe, 2 O-rings;
Wherein the body is coupled to the outer circumference of the expansion and contraction pipe outside the first and second O-rings, and when both ends of the expansion and contraction pipe are coupled to the first and second coupling cylinders, And first and second grip rings mounted on a locking groove formed in a periphery of the first and second seating grooves to prevent both ends of the first and second O-rings and the extension / contraction pipe from being separated from the socket and the elbow Wherein the spring-cooler expansion / contraction pipe connecting device for the fire suppression sprinkler for fire fighting is provided. A socket having a first seating groove formed at a periphery of a first coupling cylinder formed at one side thereof, a screw hole formed outside the first seating groove, and a locking hole formed radially outwardly of the screw hole;
An elbow in which a second seating groove is formed at a periphery of a second coupling cylinder formed at one side and a screw hole is formed outside the second seating groove;
An extension pipe connected to the socket and the elbow so as to communicate with each other at both ends thereof and having a wrinkle portion at an intermediate side thereof;
The first and second mounting grooves being provided at both outer peripheral edges of the expansion and contraction pipe so as to be in close contact with the periphery of the first and second mounting grooves and having a first connection portion between the socket and the expansion and contraction pipe, 2 O-rings;
Wherein the threaded portion is formed on one side of the outer periphery of the threaded hole and the edge of the threaded portion is formed in a U shape so as to have an elastic force on the outer side of the threaded hole corresponding to the locking hole, When the threaded portion of the first and second stoppers is engaged with the threaded hole of the first and second coupling cylinders, the coupling protrusion is coupled to the locking hole, And a second stopper for preventing both ends of the O-ring and the expansion and contraction pipe from being separated from each other. The method according to any one of claims 1, 2, 4, and 5,
And a second sealing member formed between the first and second O-rings to be mounted on the expansion and contraction pipe, for increasing a contact area of the first and second O-rings with respect to the first and second mounting grooves, Further comprising a boundary jaw (20) for connecting the sprinkler pipe (20). The method according to any one of claims 1, 2, 4, and 5,
The first and second O-rings are connected to the expansion and contraction pipe between the first and second O-rings and the first and second stoppers, or are connected to the expansion and contraction pipe between the first and second O- And one or more first and second washers coupled to the expansion and contraction pipe between the first and second grip rings for preventing the first and second O- Wherein said sprinkler is connected to said sprinkler. The method according to claim 1,
A screw hole formed on the inner circumferential inlet side of the first and second coupling cylinders;
And a screw portion formed on the outer periphery of the first and second stoppers to correspond to the screw hole,
The screw and the screw are screwed to the screw hole so that the first and second engaging cylindrical parts are engaged with the first and second stopper parts, respectively, to the both ends of the expansion and contraction pipe to the socket and the elbow, Wherein the locking jaw is prevented from being detached from the locking groove by the locking jaw.

Images