KR101743654B1 - Reducer Fixing Device for Fire Fighting - Google Patents

Abstract

The present invention relates to a double-sided socket fixing device for a building and a fire extinguisher capable of quickly and strongly securing a double-sided socket using a cam, comprising: a pipe fixing channel (30) through which a square pipe (20) passes in a lateral direction; Tension plates 31 and 32 horizontally extending from one side of the pipe fixing channel 30; Curling portions 31c and 32c at the ends of the tension plates 31 and 32; A welded reinforcing plate 41 welded between the tension plates 31 and 32; An angle 40 integrally formed at the end of the welded reinforcing plate 41 and having shaft holes 42 and 43 coinciding with the centers of the holes of the curling portions 31c and 32c; Reinforcing ribs (44) formed along the outer sides of the welding reinforcing plate (41) and the angle (40); A pair of parallel shafts 50 and 60 inserted and supported by the curling portions 31c and 32c and the shaft holes 42 and 43; A tool engagement portion (52) formed at the end of the parallel shaft (50); A pair of sector gears 70 and 72 respectively installed on the parallel shafts 50 and 60 and rotated in interlock with each other; (82) eccentrically installed on the parallel shafts (50) and (60) and urging the outer surface of the small-diameter socket (22); Knife edge portions 81 and 83 formed along the periphery of the release cams 80 and 82 and in line contact with the surface of the small-diameter socket 22; The central rectangular bent portion 92 is engaged with the square pipe 20 and has a U-shaped claw 90 formed with curling engaging portions 94 and 96 fitted to the parallel shafts 50 and 60 at the ends thereof. Elastic catch pieces 97 and 98 formed on the catch 90; And locking grooves 33 and 34 which are formed in the pipe fixing channel 30 and engaged with the elastic locking pieces 97 and 98, respectively.

Description

{Reducer Fixing Device for Fire Fighting}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a technique for fixing a small-diameter socket provided with a sprinkler head to a ceiling, and more particularly, to a small-sized socket fixing apparatus for a building using a cam to securely fasten the small-

Generally, sprinkler is a type of fire extinguishing system that automatically evolves by spraying water in the event of fire. It installs soluble metal such as lead that melts at a certain temperature (for example, around 70 ℃) on the sprinkler head, It dissolves and thereby evolves by opening the sprinkler head and automatically spraying water through an open sprinkler head.

As shown in FIGS. 1 and 2, the sprinkler head corresponding to the end of such a sprinkler facility includes a flexible pipe 11a at the end of a flexible pipe 11a branching from a water supply pipe (not shown) The sprinkler head 12 is directly connected to the end of the small-diameter socket 11 and then the sprinkler head 12 is arranged as many times as required in the ceiling surface.

It is also possible to freely adjust the vertical and horizontal positions and the vertical height of the sprinkler head 12 by fixing the small-diameter socket 11 to the square pipe 10 provided on a ceiling frame (not shown) using a small-diameter socket fixing device .

1 and 2, a cutting groove 13c for fixing the small-diameter socket 11 to the clamp main body 13 fitted to the square pipe 10 is formed in a U- And a clamp lid 14 having a trapezoidal groove 14c for pressing a front portion of the small diameter socket 11 is hinged to one side of the clamp body 13 by a hinge pin 18. [

A pivot bolt 15 is provided on the opposite side of the hinge pin 18 so as to be horizontally rotatable to the clamp body 13 by a pivot shaft 17 and a notch 19 are formed in a U-shape at the end of the clamp lid 14 and the closed clamp lid 14 is fixed by a butterfly nut 16 engaged with the pivot bolt 15.

However, since such a conventional small-diameter socket fixing device can be fixed only by coupling the butterfly nut 16 to the pivot bolt 15 and then rotating the butterfly nut 16 several times, it takes a long time to perform the installation work there was.

In the past, when the butterfly nut 16 is excessively tightened because the portion to press the small diameter socket 11 is a thin surface of the clamp lid 14, the contact surface of the clamp lid 14 is deformed, 11) was loosely installed.

As soon as the small diameter socket 11 is loosely installed, the small diameter socket 11 and the sprinkler head 12 are raised by the repulsive force when the water is sprayed from the sprinkler head 12 in the event of fire, and are hidden in the ceiling finishing material. There arises a problem that fire evolution becomes difficult.

Korean Patent Registration No. 10-1014385 Korean Patent Registration No. 10-1304747

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a small-sized socket fixing device for fire fighting buildings which can be quickly installed and obtain a stronger fastening force.

In order to accomplish the object of the present invention, there is provided a small-diameter socket fixing apparatus for building fire fighting, comprising: a pipe fixing channel in which a square pipe passes in a lateral direction; A tension plate horizontally extending parallel to a direction perpendicular to one side of the pipe fixing channel; A curling portion formed by being curled in a circular shape at an end of the tension plate; A welded reinforcing plate inserted and welded between the tension plates; An angle formed integrally at an end of the welded reinforcing plate and having a shaft bore which coincides with the center of the hole of the curled portion, respectively; A reinforcing rib formed along the outer surface of the welding reinforcing plate and the angle; A pair of parallel shafts inserted and supported by the curling portion and the shaft bush and being parallel to each other; A tool engagement portion formed at an end of one of the pair of parallel shafts; A pair of sector gears respectively installed on the parallel shafts and rotated in interlock with each other; A release cam eccentrically disposed on the parallel shaft, the release cam pressing the outer side surface of the small diameter socket inserted between the pipe fixing channel and the angle; A knife edge portion formed along the periphery of the release cam and in line contact with the surface of the peripheral socket; A U-shaped lock having a central rectangular bent portion which is engaged with a square pipe and formed with a circularly curling engaging portion at an end portion thereof to be fitted to a parallel shaft; An elastic catch formed on the catch; And an engaging groove formed in the pipe fixing channel and engaging with the elastic engaging piece.

As described above, according to the present invention, when the fastening tool such as the wrench 28 is inserted into the tool engaging portion 52 and the one parallel shaft 50 is rotated at a predetermined angle, the release cams 80, And the socket 22 can be quickly fixed.

It is possible to obtain a strong fastening force since the pair of differential cams 80 and 82 press the small diameter socket 22 at the same time.

Since the pair of parallel shafts 50 and 60 are simultaneously rotated by the sector gears 70 and 72 interlocked with each other, only one of the parallel shafts 50 can be rotated during the tightening operation, There is an effect that it can be done conveniently and quickly.

The knife edge portions 81 and 83 formed along the periphery of the release cams 80 and 82 when the release cams 80 and 82 are in close contact with the peripheral wall socket 22, It is possible to prevent the small-diameter socket 22 from being moved or tilted in the lateral direction.

The angled bends 92 formed in the catch 90 are adapted to be caught by the square pipe 20 and the curling engaging portions 94 and 96 formed at the ends of the catch 90 are engaged with the parallel shafts 50 and 60, It is possible to prevent the pipe fixing channel 30 and the angle 40 from spreading when the small-diameter socket 22 is pressed by the release cams 80 and 82, It is effective.

The elastic retaining pieces 97 and 98 formed on the catch 90 are caught in the retaining grooves 33 and 34 formed in the pipe retaining channel 30 when the catch 90 is brought into close contact with the pipe retaining channel 30. [ There is an effect that the catch 90 can be prevented from being detached from the pipe fixing channel 30.

Further, the present invention is advantageous in that the tool engaging portion 52 passes through the curling engaging portion 94 when the curling engaging portions 94 and 96 formed in the catch 90 are fitted to the parallel shafts 50 and 60, It is convenient to rotate the parallel shafts 50 and 60 in a state in which the catches 90 are in close contact with the pipe fixing channels 30.

It is possible to prevent the angle between the angle 40 and the pipe fixing channel 30 from being widened by the welding reinforcing plate 41 and the reinforcing ribs 44 formed on the angle 40. [

FIG. 1 is a perspective view of a conventional double-
FIG. 2 is a perspective view of a conventional socket fixing device,
3 is an exploded perspective view
Fig. 4 is an exploded perspective view of the bottom side of Fig.
FIG. 5 is a perspective view of a combined state perspective view
Figure 6 is an exploded perspective view of the clamp according to the invention,
7 is a perspective view of the bottom-
8 is a side view showing rotation of a parallel shaft according to the present invention with a spanner;
9 is a side sectional view showing that the release cam according to the present invention is switched to the locked state
10 is a side sectional view showing that the release cam according to the present invention is switched to the release state

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 3 to 10, the present invention includes a pipe fixing channel 30 through which a square pipe 20 passes in a lateral direction; A tensile plate 31 (32) extending parallel to and perpendicularly to one side of the pipe fixing channel (30); And curling portions 31c and 32c formed by being curled in a circular shape at the end portions of the tension plates 31 and 32. [

The pipe fixing channel 30 may be formed in a U-shaped cross-section that coincides with the outer surface of the square pipe 20 and the tension plates 31 and 32 may be formed to be perpendicular to the pipe fixing channel 30. [ And the curling portions 31c and 32c formed at the end portions of the tension plates 31 and 32 can be formed by rolling toward the outward direction, for example, opposite to each other.

The pipe fixing channel 30, the tension plates 31 and 32, and the curling portions 31c and 32c may be integrally formed using a metal plate having a constant thickness.

The present invention relates to a welded reinforcing plate (41) inserted and welded between tension plates (31, 32); An angle 40 integrally formed at the end of the welded reinforcing plate 41 and having shaft holes 42 and 43 coinciding with the centers of the holes of the curling portions 31c and 32c; And a reinforcing rib 44 formed along the outer surface of the angle reinforcing plate 41 and the angle 40.

The weld bead 46 is formed on the joint portion where the tensile plates 31 and 32 meet the welded reinforcing plate 41 and the welded reinforcing plate 41 and the angle 40 are formed by using a steel plate having a constant thickness, It can be formed by bending integrally so as to form a U-shape when viewed.

The upper and lower widths of the angle 40 may be larger than the upper and lower widths of the welded reinforcing plate 41 so that the end of the angle 40 can be welded to the outer peripheral surface of the curled portions 31c and 32c, The reinforcing ribs 44 may be formed at the center of the outer surface of the welded reinforcing plate 41 and the angle 40. [

The reinforcing ribs 44 serve to increase the bending strength of the angle 40.

The present invention includes a pair of parallel shafts (50) (60) inserted and supported by curling portions (31c) and (32c) and shaft holes (42) and (43) and parallel to each other; And a tool engagement portion (52) formed at the end of either parallel shaft (50) of the pair of parallel shafts (50) (60).

55, 56, 65 and 66 are formed on the outer circumferential surfaces of the parallel shafts 50 and 60 and the parallel shafts 50 and 60 are formed by the curling portions 31c and 32c and the soccer 54, 63 and 64 which are inserted into the yoke 42 and 43 and then engaged with the curling portions 31c and 32c and the angle 40 are inserted into the stop grooves 55 and 56 ) 66 to prevent the parallel shafts 50, 60 from being axially displaced or flowing.

The tool engaging portion 52 can be formed to have, for example, a square cross section so that the one parallel shaft 50 can be rotated using a fastening tool such as the spanner 28 as shown in Fig. 8 A hexagonal groove, a square groove, a cross groove, a notched groove, or the like may be formed at the end portion of the tool connecting portion 52 and the parallel shaft 50 may be formed by using various fastening tools. So that it can be rotated.

A pair of sector gears (70) and (72), which are installed on parallel shafts (50) and (60), respectively, and are rotated in interlock with each other; (82) eccentrically installed on the parallel shafts (50) and (60) and pressing the outer surface of the small-diameter socket (22) inserted between the pipe fixing channel (30) and the angle (40); And includes knife edge portions 81 and 83 formed along the periphery of the release cams 80 and 82 and in line contact with the surface of the small diameter socket 22. [

The sector gears 70 and 72 may be formed as sector gears and the cylindrical hubs 71 and 73 may be integrally formed with the sector gears 70 and 72 so that the hubs 71 and 73 The sector gears 70 and 72 are installed on the parallel shafts 50 and 60. [

At this time, pins 74 and 75 are provided on the hubs 71 and 73 and the parallel shafts 50 and 60 to prevent the parallel shaft 50 and the sector gears 70 and 72 from being idle. The pin holes 51, 61, 76, and 77 for fitting the pin holes 51 and 52 can be formed to be coincident with each other.

Eccentric holes 86 and 87 are formed in the centers of the differential cams 80 and 82. As shown in FIGS. 9 and 10, the 270 degree section is formed in an arc shape in the entire circumference, And the centers of the arcs formed in the interval of 270 degrees have predetermined eccentric distances L1 and L2 from the centers of the parallel shafts 50 and 60, A gap G1 can be formed between the small-diameter socket 22 and the release cams 80 and 82 as shown in the enlarged view of Fig. 10, have.

The knife edge portions 81 and 83 formed around the release cams 80 and 82 are formed in a row at regular intervals along the axial direction with the valley portion 88 therebetween as shown in the enlarged view of FIG. The spacers 84 and 85 are provided between the differential cams 80 and 82 and the angle 40 so that the differential cams 80 and 82 and the sector gears 70 and 72 Thereby preventing it from moving in the axial direction.

Before the parallel shafts 50 and 60 are inserted into the eccentric holes 86 and 87 formed in the release cams 80 and 82, the inner peripheral surface of the eccentric hole 86 and the parallel shaft 50 60 may be coated with an anaerobic adhesive, and then the two sides may be bonded.

The present invention is characterized in that a central square bend 92 is engaged with a square pipe 20 and is formed with a U-shaped cross-section having a rounded curling engagement portion 94 (96) A catch 90; Elastic catch pieces 97 and 98 formed on the catch 90; And locking grooves 33 and 34 which are formed in the pipe fixing channel 30 and engaged with the elastic locking pieces 97 and 98, respectively.

The claws 90 and 96 may be formed using a metal plate and the curling joints 94 and 96 are formed to have the same inner diameter as the curled portions 31c and 32c formed on the tensile plates 31 and 32 And the elastic catching pieces 97 and 98 are engaged with the catching grooves 33 and 34 to prevent the catching piece 90 from being detached from the pipe fixing channel 30. [

In the figure, reference numeral 24 denotes a sprinkler head provided at the lower end of the small-diameter socket 22, and 26 denotes a flexible tube connected to the upper end of the small-diameter socket 22.

Hereinafter, the operation according to the present invention will be described in detail with reference to the accompanying drawings.

6 and 7, the square pipe 20 is inserted into the pipe fixing channel 30 while the catch 90 and the pipe fixing channel 30 are separated from each other. Then, the pipe fixing channel 30 is inserted into the pipe fixing channel 30, The clamp 90 is inserted into the square pipe 20 while the rectangular bent portion 92 of the clamp 90 is in contact with the square pipe 20, So that the curling joints 94 and 96 formed on the catches 90 are respectively engaged with the ends of the parallel shafts 50 and 60 while the catches 90 are brought into close contact with the pipe fixing channel 30 The elastic catching pieces 97 and 98 formed on the catch 90 are caught by the catching grooves 33 and 34 formed in the pipe fixing channel 30.

10, in order to secure a space for inserting the small-diameter socket 22 between the pipe fixing channel 30 and the release cams 80 and 82, the release cams 80 and 82, (22).

8 and 9, when one of the parallel shafts 50 is rotated in the direction of the arrows in Figs. 8 and 9 by engaging the fastening tool such as the spanner 28 with the tool engagement portion 52, The two parallel shafts 50 and 60 are simultaneously rotated in directions opposite to each other by the sector gears 70 and 72 having the sector gears 70 and 72. [

The pins 74 and 75 inserted into the hubs 71 and 73 and the parallel shafts 50 and 60 are rotated by the sector gears 70 and 72 when rotating the parallel shafts 50 and 60, And the differential cams 80 and 82 are also rotated by the parallel shafts 50 and 60 while the sector gears 70 and 72 are rotated.

When the release cams 80 and 82 are rotated and the linear portions formed on the release cams 80 and 82 come in close contact with the peripheral wall socket 22 as shown in Fig. 9, Is no longer rotated and is stopped.

At this time, the sharp knife edge portions 81 and 83 formed on the periphery of the release cams 80 and 82 make a line contact with the surface of the small diameter socket 22 to finely dig a surface of the small diameter socket 22, It is possible to prevent the socket 22 from moving or tilting in the lateral direction.

When the small-diameter socket 22 receives a pressing force by the release cams 80 and 82, a force is applied in a direction in which the pipe fixing channel 30 and the angle 40 are extended. At this time, The pipe fixing channel 30 and the angle 90 are formed by the claws 90 having the curling engagement portions 94 and 96 and the angled bent portion 92 engaged with the square pipe 20, 40 can be prevented from being opened.

The stopper groove 55 can be made to protrude more firmly against the force acting on the angle 40 by the welded reinforcing plate 41 and the reinforcing rib 44 formed on the outer surface of the angle 40, The retaining rings 53, 54, 63 and 64 sandwiched between the parallel shafts 56 and 65 and the parallel shafts 50 and 60 in the axial direction It acts to prevent movement.

20: Square pipe 22: Reducer socket
24: sprinkler head 26: flexible tube
28: spanner 30: pipe fixing channel
31 and 32: tension plates 31c and 32c:
33, 34: engaging groove 40: angle
41: welded reinforcing plate 42, 43:
44: reinforcing rib 46: welding bead
50, 60: Parallel shafts 51, 61, 76, 77:
52: Tool coupling section 53, 54, 63, 64:
55, 56, 65, 66: stop grooves 70, 72:
71, 73: hub 74, 75: pin
80, 82: release cam 81, 83:
84,85: Spacer 86,87: Eccentric hole
88: valley 90: claw
92: angled bent portion 94, 96: curling engaging portion
97,98: Elastic locking piece G1: Gap
L1, L2: eccentric distance

Claims (1)

A pipe fixing channel (30) through which the square pipe (20) passes in the lateral direction;
A tensile plate (31) (32) extending in parallel to the pipe fixing channel (30) in a direction perpendicular to the pipe;
Curling portions 31c and 32c formed in a circular shape at the ends of the tension plates 31 and 32;
A welded reinforcing plate 41 inserted and welded between the tension plates 31 and 32;
An angle (40) integrally formed at an end of the welded reinforcing plate (41) and having a shaft hole (42) (43) coinciding with a hole center of the curling portion (31c) (32c);
A reinforcing rib (44) formed along the outer surface of the welding reinforcing plate (41) and the angle (40);
A pair of parallel shafts (50) (60) inserted and supported by the curling portions (31c) and (32c) and the shaft holes (42) and (43) and parallel to each other;
A tool engaging portion (52) formed at an end of the parallel shaft (50) of one of the pair of parallel shafts (50) (60);
A pair of sector gears (70) (72) installed on the parallel shafts (50) (60) and rotated together with each other;
The eccentric cams 80 and 82 are provided eccentrically to the parallel shafts 50 and 60 and press the outer surface of the small diameter socket 22 inserted between the pipe fixing channel 30 and the angle 40 );
Knife edge portions 81 and 83 formed along the periphery of the release cams 80 and 82 and in line contact with the surface of the small-diameter socket 22;
The central square bending portion 92 is engaged with the square pipe 20 and is formed with a U-shaped clasp 90 formed with rounded curling engaging portions 94 and 96 to be fitted to the parallel shafts 50 and 60, (90);
Elastic catch pieces 97 and 98 formed on the catch 90;
(33) (34) formed on the pipe fixing channel (30) and engaging with the elastic catching pieces (97) and (98);
For building fire extinguisher sockets.

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