JP3143738B2 - Duct support - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a duct for wiring and piping a long object such as a cable in a building or the like, and a duct for hanging and supporting a lighting fixture, which is used for a frame or the like of the building. TECHNICAL FIELD The present invention relates to a technique for preventing a duct from being detached in a duct support tool for supporting a shaped steel.

[0002]

2. Description of the Related Art For wiring and piping cables and pipes in buildings and the like, and for suspending and supporting lighting equipment and the like,
Raceways and ducts made of lip channel steel etc.
These are collectively referred to as ducts). This type of duct is generally used to construct a frame or the like of a building.
It is attached so as to intersect with a section steel or H section steel.

FIG. 10 shows a conventional duct support 10 used for supporting a duct with an L-beam or an H-beam.

The duct support 10 has a U bolt 11,
It comprises a nut 12 to be screwed to the screw portion 11a and a metal holding member 13, and the holding member 13 has U
A hole 14 for inserting the screw portions 11a of the bolt 11 is provided. When the duct 1 is supported by the L-shaped steel using the duct support 10, as shown in FIG. 11A, both surfaces of the flange 6 of the L-shaped steel 5 are pressed between the holding member 13 and the duct 1. Holding member 13
Pass the threaded portion 11a of the U bolt 11 through the hole 14
The nut 12 is fastened to the screw portion 11a protruding from
The duct 1 is pressed against the lower surface of the flange 6 of the L-shaped steel 5 and fixed.

[0005]

However, the duct support 10 for supporting the duct 1 only by fixing the holding member 13 with bolts as described above does not work when an external force is applied in the length direction of the duct 1 due to an earthquake or the like. , Holding member 13
Is shifted with respect to the section steel.

That is, when the duct 1 is supported by the L-shaped steel member 5 as shown in FIG. 11A, a strong external force F is applied to the right (in FIG. 11) along the length direction of the duct 1. And the holding member 1 together with the duct 1 for the L-section steel 5
As shown in FIG. 11B, there is a danger that the position of No. 3 is largely shifted rightward, and the holding plate 13 comes off the edge of the flange 6 of the L-shaped steel 5, and the duct 1 falls.

Further, if the nut 12 is strongly tightened to prevent the pressing member 13 from shifting to the right, there is a problem that the pressing member 13 itself is deformed.

An object of the present invention is to provide a duct support which solves this problem and prevents the duct from being detached from the shaped steel by a strong external force such as an earthquake.

[0009]

To achieve the above object, a duct support according to the present invention holds a duct (1) having screw portions (21a) at both ends. (21), a board (24) having a pair of holes (27) and (27) through which both threaded portions (21a) and (21a) of the U-bolt (21) are inserted; A pressing piece (25) protruding from one end of the substrate (24) and a notch (28) protruding from the other end of the substrate (24) at the center.
(23) having an engaging piece (26) provided with
And a screw portion (21a) of the U-bolt (21) inserted through the holes (27) of the holding member (22).
Nuts (22), (22) for screwing into (21a)
And a first regulating member erected on one end side of the base (31) so as to abut against one edge of the flat base (31) and one edge of the flange (6) of the shape steel (5) from outside. Part (32)
And the engaging piece (2) at the other end of the pressing member (23).
The first restricting portion (3) is provided at the other end of the base portion (31) in order to abut from the outside in the cutout portion (28) of (6).
2) and a stopper member (30) having a second restricting portion (33) erected on the same side, and one side surface of the duct (1) and the outer surface of the flange (6) of the section steel (5). Between
The holding portion (23) is sandwiched between the base portion (31) of the slip preventing member (30) in a state where the first regulating portion (32) is in contact with one edge of the flange (6) from outside.
The pressing piece (25) at one end of the substrate (24) is brought into contact with the inner surface of the flange (6), and the notch (28) of the engaging piece (26) at the other end is In a state where the second restricting portion (33) of the stopper member (30) abuts from the outside, the pressing member (23) is put on from the inner surface side of the flange (6) of the shape steel (5), and the U bolt The screw portions (21a) and (21a) at both ends of the U-bolt (21) from the outer surface side of the flange (6) are held on the substrate (24) of the pressing member (23) so that the duct (1) is held by (21). ) Into a pair of holes (27) and (27),
The nuts (22) and (22) are screwed and tightened to the inserted screw portions (21a) and (21a), thereby forming a duct between the U-bolt (21) and the holding member (23). (1), the slip-stopping member (30) and the flange (6) of the shape steel (5) are sandwiched, and the first restricting portion (32) at one end of the slip-stopping member (30) is connected to the flange (6). And the second restricting portion (33) on the other end side is in contact with the outside of the notch (28) of the engaging piece (26) of the pressing member (23). I have to.

For this reason, even if an external force is applied in the length direction of the duct, the displacement of the holding member with respect to the flange of the mold steel is as follows.
The duct is regulated by the first regulating section and the second regulating section of the slip preventing member, and there is no danger that the duct will come off from the shaped steel.

According to a second aspect of the present invention, in the duct support according to the first aspect, the distance between the second restricting portion of the stopper member and the first restricting portion is different. It is provided at each of a plurality of positions.

Therefore, it is possible to cope with various mold steels having different widths of the flanges of the mold steel with one kind of slip preventing member. According to the third aspect of the present invention, since the engaging piece of the pressing member is inserted into and engaged with the second restricting portion formed of the hole, there is no possibility that the duct will come off the mold steel as in the first aspect. According to the fourth aspect, the second restricting portion is provided at a plurality of positions at different distances from the first restricting portion. Therefore, even if the width of the flange of the shape steel is different with one type of slip-stopping member. .

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 to 3 show a duct for mounting a duct 1 made of a lip channel in a state crossing the L-shaped steel 5 on the lower surface side of a horizontal flange 6 of the L-shaped steel 5 suspended in a building. The support 20 is shown.

As shown in FIG. 1, the duct support 20 has U bolts 21 through which the duct 1 can pass.
Nut 2 to be screwed to threaded portions 21a of U bolt 21a
2. It is composed of a metal pressing member 23 and a slip preventing member 30.

The holding member 23 includes a rectangular flat base 24 having a width wider than the interval between the threaded portions 21 a of the U-bolt 21, and a pair of pressing pieces 25 bent downward from both ends at one end of the base 24. , 25 and an engagement piece 26 bent downward from the other end of the base 24, and a pair of lengths for inserting the threaded portions 21 a of the U-bolt 21 into the middle of the base 24. Holes 27, 27 are provided in a straight line, and a width slightly larger than the width of the duct 1 is provided at an intermediate portion of the lower end of the engagement piece 26 to receive the duct 1 and the second restricting portion 33 of the slip-off preventing member 30. A notch 28 is formed.

The slip preventing member 30 has a width substantially equal to the width of the duct 1 and is formed in a substantially rectangular flat base 31 longer than the width of the pressing member 23 and the flange 6 of the L-shaped steel 5.
And a restriction piece 32 bent upward from one end of the base 31.
And a restricting piece 33 bent upward so as to face the restricting piece 32 from the other end of the base 31. Incidentally, restricting piece 32 which is erected at one end of the base portion 31 forms a first restricting portion of this embodiment, the restricting piece 33 which is erected at the other end of the base portion 31 is first of the second embodiment Is formed. In addition, trapezoidal notches 34, 34 are provided on both sides of the base 31 to prevent the U bolt from hitting the base 31 when the duct narrower than the duct 1 is supported by the narrow U bolt. ing.

The duct support 20 thus constructed
Is mounted as shown in FIGS. That is, in a state where the one surface 32a of the regulating piece 32 of the slip stopper 30 and the one surface 7a of the vertical flange 7 rising so as to be continuous with one edge of the flange 6 of the L-shaped steel 5 are brought into contact with each other.
The base 31 of the displacement-preventing member 30 sandwiched between the lower surface 6a and the side surface of the duct 1 in the flange 6 of the L-shaped steel 5 (in this case upper face), the pressing member 23, the lower end of the pressing piece 25, 25 is L The engaging piece 2 is in contact with the upper surface 6b of the flange 6 of the shaped steel 5 and
6 is placed from above so that the other end of the base 31 of the slip stopper 30 engages with the notch 28 of
Screw holes 21a, 21 of the U bolt 21
a, and the nut 22 is fastened to the screw portions 21a, 21a.

Thus, the pressing piece 2 of the pressing member 23
5 and 25 strongly press the upper surface 6 b of the flange 6 of the L-shaped steel 5, and the base 31 of the slip prevention member 30 is fixed in a state of being sandwiched between the duct 1 and the flange 6 of the L-shaped steel 5, The duct 1 is supported in a direction substantially orthogonal to the L-shaped steel 5. Further, the inner wall surface 32a side of one of the restriction pieces 32 of the slip stopper 30 abuts one edge (side surface of the vertical flange 7) of the flange 6 of the L-shaped steel 5 from the outside, and the other restriction piece 3
3, the inner wall surface 33a is in contact with the engaging piece 26 on the other end side of the pressing member 23 from outside.

With this mounting, as shown in FIG.
When an external force F in the horizontal direction is applied to the duct 1 due to an earthquake or the like, the force is applied to the slip preventing member 3 in contact with the duct 1.
The pressing member 23 is transmitted from the L-shaped steel member 5 to the right through the 0 and U bolts 21.
The rightward movement of the slip prevention member 30 that causes the inner wall of the restriction piece 33 to abut against the engagement piece 26 of the L-shaped steel 5
Is regulated by the regulating piece 32 abutting the inner wall to the left edge of the holding member 23, even if the duct 1 is displaced rightward with respect to the L-shaped steel 5, the displacement of the holding member 23 to the right is restricted. You. For this reason, the duct 1 does not come off from the L-shaped steel 5.

When an external force F 'in the opposite direction is applied,
The force is transmitted in a direction to shift the pressing member 23 to the left from the L-shaped steel 5 through the slip-stopping member 30 and the U-bolt 21 which are in contact with the duct 1, and this direction is determined by the pressing member 23 and the L-shaped This is a direction in which the overlap of the steel 5 with the flange 6 increases, and the U-bolt 21 abuts on the tip of the flange 6 of the L-shaped steel 5, thereby restricting the movement of the holding member 23 to the left. Absent.

As described above, even when an external force is applied along the length direction of the duct 1 so as to separate the pressing member 23 from the flange 6 of the L-shaped steel 5, the regulating pieces provided on both ends of the slip preventing member 30. The displacement of the pressing member 23 with respect to the L-shaped steel 5 is prevented by the 32 and 33, so that the duct 1 does not come off from the L-shaped steel 5.

The slip preventing member 30 of this embodiment
Is formed to have a width that can pass between the U bolts 21, so that the slip preventing member 30 can be simply mounted on the conventional duct support without using the slip preventing member 30 by loosening the nut. In addition, there is an advantage that even if the slip-preventing member 30 is forgotten in the case of new construction, the mounting operation can be easily performed.

Further, the restriction pieces 3 at both ends of the slip preventing member 30 are provided.
The interval between 2 and 33 (the length of the base 31 in this case) needs to correspond to the width of the flange of the section steel. For example, when the duct 1 is supported on an I-shaped steel 8 (or an H-shaped steel) having a wide flange 9 as in a duct support 20 'shown in FIG. What is necessary is just to use the slip prevention member 30 'which has 31'.

As shown in FIG. 5, a base 41 and a restricting piece 42 erected at one end thereof are formed to have a wide width, and the extension 41 is provided at the other end of the base 41. Piece 4
3 is provided with a restriction piece 44 at the tip and a slot 4 for inserting the threaded portion of the U-bolt 21 on both sides of the base 41.
With the provision of 5, 45, the holding member 23 and the slip-preventing member 40 can be integrated in advance in a state where they are fastened to the U-bolt 21 with nuts, which facilitates the work and the management of parts. .

Further, in the slip-preventing member 30 of the above-described embodiment, only one regulating piece 33 as the second regulating portion is provided, but the regulating piece 3 as the first regulating portion is used as the second regulating portion.
If it is provided at a position different in distance from 2, it is possible to cope with mold steels having different flange widths by using one kind of slip preventing member. Further, the second restricting portion may be formed by a hole or a notch provided in the base.

For example, as shown in FIG. 6, a base portion 51 and a restriction piece 52 as a first restriction portion erected on one end side thereof are formed to be wide. A pair of large regulating holes 53, 53 for receiving the lower ends of both ends of the engaging piece 26 of the holding member 23 while allowing the bolt 21 to pass therethrough are provided. Further, the other end side of the base 51 is bent upward at a predetermined interval. A pair of regulating pieces 54,
It is also possible to provide a restriction piece 56 that is bent upward from the tip of an extension piece 55 extending from between the pair of restriction pieces 54, 54.

As described above, in the duct support having the slip-preventing member 50 having the plurality of second restricting portions, when the width of the flange 6 of the L-shaped steel 5 is narrow, FIGS.
As described above, the nut 22 is tightened to the U-bolt 21 with both ends of the engaging piece 26 of the holding member 23 in contact with the inner walls of the pair of regulating holes 53 of the stopper member 50.

When the width of the flange 6 of the L-shaped steel 5 is large, the engaging piece 26 of the holding member 23 is disengaged from the pair of regulating pieces 54, 54 of the stopper 50 as shown in FIG. When the width of the flange 6 of the L-shaped steel 5 is further increased when the nut 22 is tightened in a state in which the nut 22 is in contact with the inner wall of the holding member 23, as shown in FIG. 2
The nut 22 is tightened to the U-bolt 21 in a state where the 6 is brought into contact with the inner wall of the regulating piece 57 of the slip preventing member 50.

Further, instead of the regulating piece 33 of the above-mentioned misaligning member 30, a pair of regulating pieces 54, 54 and a regulating piece 56 such as a misaligning member 50 may be provided.

Further, as shown in FIG. 9, a holding member 2 ′ is provided behind a pair of regulating holes 53, 53.
A pair of regulating holes 61 for receiving both ends of the third engaging piece 26;
61 is provided, and further, a regulating piece 62 is erected behind it,
Position the holding member 23 with respect to the
The restriction piece 62 of the stopper 50 ′ may be omitted, the restriction piece 52 on one end of the base 51 ′ and the restriction hole 53 provided on the other end of the base 51 ′.
The displacement of the pressing member 23 may be prevented at 61.

In the above embodiment, the L-shaped steel and the H-shaped steel are used.
Although the case where the duct is supported below the section steel has been described, the present invention can be similarly applied to the case where the duct is supported by an I section steel, a T section steel, or the like, and the duct can be supported above the section steel. Alternatively, the present invention can be similarly applied to a case in which a duct is supported so as to intersect a section steel erected vertically.

As described above, the duct support of the present invention comprises a U-bolt (21) for holding a duct (1) having screw portions (21a) at both ends, and the U-bolt. A board (24) having a pair of holes (27) and (27) through which both screw portions (21a) and (21a) of (21) are inserted, and a pressing piece protruding from one end of the board (24) ( 25) a pressing member (23) projecting from the other end of the substrate (24) and having an engaging piece (26) having a cutout (28) in the center; Nuts (22) and (22) for screwing into the threaded portions (21a) and (21a) of the U-bolt (21) inserted through the holes (27) and (27), and a flat base (31) And the base () to abut one edge of the flange (6) of the section steel (5) from outside. First erected on one side of the 1)
And a notch (28) of the engaging piece (26) at the other end of the holding member (23). A first stopper (32) and a second stopper (33) erected on the same side;
Between the one side surface of the duct (1) and the outer surface of the flange (6) of the profiled steel (5), the base (31) of the stopper member (30) is connected to the first regulating portion (32) by the flange ( 6)
The pressing piece (25) on one end side of the substrate (24) of the pressing member (23) is brought into contact with the inner surface of the flange (6), with the pressing member (23) being held in contact with one edge portion from the outside. And the notch (28) of the engagement piece (26) on the other end side.
In a state where the second restricting portion (33) of the slip preventing member (30) abuts from the outside, the pressing member (23) is covered from the inner surface side of the flange (6) of the section steel (5), U-bolt (21) from outside of flange (6) to hold duct (1) with U-bolt (21)
A pair of holes (27) in a substrate (24) of the pressing member (23);
(27) The screw portion (21a) inserted and inserted,
By screwing and tightening the nuts (22) and (22) to (21a), the duct (1) and the stopper (30) are provided between the U-bolt (21) and the holding member (23). ) And the flange (6) of the mold steel (5) are sandwiched, and the first restricting portion (32) at one end of the stopper member (30) is in contact with the outside of one edge of the flange (6). The second restricting portion (33) on the other end side abuts from the outside at the notch (28) of the engaging piece (26) of the pressing member (23).

For this reason, even if an external force is applied in the length direction of the duct, the displacement of the holding member with respect to the flange of the mold steel is as follows.
The duct is regulated by the first regulating section and the second regulating section of the slip preventing member, and there is no danger that the duct will come off from the shaped steel.

Further, the second restricting portion of the slip preventing member is moved to the first position.
A plurality of duct supports provided at different distances from the restricting portion can support various types of steel with different widths of the flanges of the steel with one kind of slip stopper. According to the third aspect of the present invention, since the engaging piece of the pressing member is inserted into and engaged with the second restricting portion formed of the hole, there is no possibility that the duct will come off the mold steel as in the first aspect. According to the fourth aspect, the second restricting portion is provided at a plurality of positions at different distances from the first restricting portion. Therefore, even if the width of the flange of the shape steel is different with one type of slip-stopping member. .

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention.

FIG. 2 is a perspective view showing an attached state of the embodiment.

FIG. 3 is a side view of the mounted state of the embodiment;

FIG. 4 is a side view of a partially modified embodiment.

FIG. 5 is an exploded perspective view of an embodiment in which a part is modified.

FIG. 6 is an exploded perspective view of an embodiment in which a part is modified.

FIG. 7 is a perspective view of the embodiment of FIG. 6 in an attached state.

8 is a side view of the embodiment of FIG. 6 in an attached state.

FIG. 9 is an exploded perspective view of an embodiment in which a part is modified.

FIG. 10 is a perspective view of a conventional support.

FIG. 11 is a side view showing a mounting state using a conventional support.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Duct 5 L-shaped steel 6 Flange 20 Duct support 21 U bolt 22 Nut 23 Holding member 24 Base 25 Pressing piece 26 Engaging piece 27 Elongated hole 30 Displacement preventing member 31 Base 32, 33 Regulatory piece

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) F16B ⁷ /00-7/22 F16B 5/12 F16B 9/02 F21V 21/08

Claims (4)

(57) [Claims] (1)Threads (21a) and (21a) are provided at both ends.
U bolt (21) for holding the duct (1)
When, Both screw portions (21a), (21) of the U bolt (21)
a) having a pair of holes (27) and (27) through which
A substrate (24), and projecting from one end of the substrate (24).
A pressing piece (25) and a projecting piece are provided from the other end of the substrate (24).
And an engagement piece (26) having a cutout (28) at the center.
A holding member (23) having Insert the holes (27) and (27) of the holding member (22)
Threaded portions (21a), (21) of the U-bolt (21)
nuts (22), (22) for screwing into a); Flat base (31) and flange (6) of section steel (5)
The base (3) to abut one edge of the
A first regulating portion (32) erected on one end side of 1),
Of the engaging piece (26) at the other end of the holding member (23).
The outer surface of the notch (28)
The other end of the base (31) is the same as the first regulating part (32).
Displacement having the second regulating portion (33) erected to one side
A stop member (30), One side of the duct (1) and the flange (6) of the section steel (5)
The base of the anti-slip member (30) between the base and the outer surface
(31) the first regulating part (32) with the flange (6)
With one edge of the
The pressing piece on one end side of the substrate (24) of the even member (23)
(25) is brought into contact with the inner surface of the flange (6), and
The notch (28) of the engagement piece (26) on the other end side
The second restricting portion of the slip stopper (30).
In a state where (33) abuts from the outside, the pressing member is
(23) is the inner side of the flange (6) of the die (5)
And hold the duct (1) with the U-bolt (21)
Bolt (21) from the outside of the flange (6)
Press the screw portions (21a) and (21a) at both ends of the
A pair of holes (27) in the substrate (24) of the supporting member (23),
(27) The screw portion (21a) inserted and inserted,
Screw the nuts (22) and (22) into (21a)
By tightening, the U bolt (21) and the pushing
Even with the member (23) Duct (1) between and the slip-prevention
The member (30) and the flange (6) of the section steel (5) are clamped.
And a first regulation of one end of the slip stopper (30).
Part (32) abuts outside one edge of flange (6)
And the second regulating portion (33) on the other end side is
Notch (28) of engaging piece (26) of member (23)
Contact from outside duct
Support. 2. A second restricting portion of the slip preventing member (30) .
The duct support according to claim 1, wherein the (33) is provided at a plurality of positions at different distances from the first restricting portion (32) . (3)Threads (21a) and (21a) are provided at both ends.
U bolt (21) for holding the duct (1)
When, Both screw portions (21a), (21) of the U bolt (21)
a) having a pair of holes (27) and (27) through which
A substrate (24), and projecting from one end of the substrate (24).
A pressing piece (25) and a projecting piece are provided from the other end of the substrate (24).
And an engagement piece (26) having a cutout (28) at the center.
A holding member (23) having Insert the holes (27) and (27) of the holding member (22)
Threaded portions (21a), (21) of the U-bolt (21)
nuts (22), (22) for screwing into a); Flat base (31) and flange (6) of section steel (5)
The base (3) to abut one edge of the
A first regulating portion (32) erected on one end side of 1),
The engaging piece (26) at the other end of the holding member (23) is removed.
Open to the other end of the base (31) for insertion engagement
Stopper member having a second restricting portion formed of a cut hole
(30) One side of the duct (1) and the flange (6) of the section steel (5)
The base of the anti-slip member (30) between the base and the outer surface
(31) the first regulating part (32) with the flange (6)
With one edge of the
The pressing piece on one end side of the substrate (24) of the even member (23)
(25) is brought into contact with the inner surface of the flange (6), and
The engaging piece (26) on the other end is connected to the slip-stopping member.
(30) hole? And inserted into the second restricting portion.
In the state of being pressed, the pressing member (23) is
Cover the inner surface of the flange (6), and
1) Hold the duct (1) in the flange (6)
From the outer surface side, the screw portions (21) at both ends of the U bolt (21)
a) and (21a) are mounted on the substrate (2) of the pressing member (23).
4) and inserted through the pair of holes (27) and (27).
The nuts (2a) are attached to the threaded portions (21a) and (21a).
2) By screwing and tightening (22),
A bolt is inserted between the U bolt (21) and the holding member (23).
(1), the slip preventing member (30), and the die steel
The flange (6) of (5) is sandwiched, and the stopper member is
The first restricting portion (32) at one end of (30) is a flange.
(6) abutting on the outer side of one edge and the second edge on the other end side;
The engaging piece of the pressing member (23) is attached to the second regulating portion (33).
(26) is inserted and engaged.
 Duct support. 4. A second restricting portion of said stopper member (30).
But a plurality of different distances from the first restricting portion (32).
Claims characterized by being provided at each position of
Item 4. A duct support according to Item 3 .