JP7014457B2 - Protective plate for hanging brackets - Google Patents

Description

The present invention relates to a protective plate for a hanging metal fitting that suspends and holds a pipe.

Conventionally, hanging metal fittings for suspending and holding pipes for air conditioning and hot water supply from the ceiling of a building or the like are well known. When the pipe is directly held by the band part of the hanging bracket, the covering part (heat insulating material) that covers the pipe bites into the band part due to the weight of the pipe, and the covering part is crushed or torn, and the heat insulating function of the covering part is provided. There was a risk of lowering it.

For this reason, in the 2019 edition of the Ministry of Land, Infrastructure, Transport and Tourism Public Building Construction Standard Specifications (Mechanical Equipment Construction), it is clearly stated that a protective plate made of synthetic resin, etc. will be provided between the band part of the hanging bracket and the piping. There is. With this configuration, the support area for the pipe is increased by the presence of the protective plate, so that the weight of the pipe can be dispersed and the bite of the covering portion into the band portion can be suppressed (the covering portion can be prevented from being crushed or torn). be.

Examples of this type of protective plate include those of Patent Document 1. In the protective plate of Patent Document 1, a holding arm long in the pipe axis direction is provided at the center of the lower surface of the plate body in contact with the pipe. By sandwiching the band portion of the hanging metal fitting between the plate body itself and the holding arm, the displacement movement of the protective plate with respect to the hanging metal fitting in the piping axis direction is restricted.

Japanese Unexamined Patent Publication No. 2018-115740

However, in the above-mentioned conventional configuration, although the displacement movement of the protective plate with respect to the hanging metal fitting in the piping axis direction can be regulated, there is a problem that the displacement movement in the piping circumferential direction cannot be regulated. In addition, it cannot be denied that the protective plate may shift in the circumferential direction of the pipe due to vibration during equipment operation. Further, since the holding arm long in the pipe axis direction is provided so as to be sandwiched between the plates, there is room for improvement in terms of the number of parts and the manufacturing cost.

It is a technical subject of the present invention to provide a protective plate for a hanging metal fitting which has been improved by examining the above-mentioned current situation.

The present invention is a protective plate interposed between a pipe and a band portion of a hanging metal fitting that holds the pipe, and includes a plate body that abuts on the pipe, and the band is located at the center of the lower surface of the plate body. A first fitting protrusion that fits into the fitting hole formed in the lower part of the portion is formed, and the first fitting protrusion is formed in a split pin shape having a shaft portion divided into two by a split groove. An engaging claw that is hooked on the edge of the fitting hole is formed on the tip end side of each of the shaft portions, and both shaft portions are elastically deformable in directions close to each other. Is.

In the protective plate for hanging metal fittings according to the present invention, fragile portions for cutting formed continuously or discretely along the pipe axis direction are provided on both sides of the plate body with a virtual center line extending in the pipe axis direction. It may be formed.

In the protective plate for hanging metal fittings according to the present invention, a first notch portion is formed at a side edge portion and a fragile portion where the plate body intersects with a virtual line extending in the circumferential direction of the pipe through the first fitting projection. May be formed.

In the protective plate for hanging metal fittings according to the present invention, a second fitting protrusion having the same configuration as the first fitting protrusion is formed on a portion of the lower surface of the plate body separated from the central portion in the pipe axis direction. You may do so.

In the protective plate for hanging metal fittings according to the present invention, a second notch portion is formed at a side edge portion and a fragile portion where the plate body intersects with a virtual line extending in the circumferential direction of the pipe through the second fitting projection. May be formed.

According to the present invention, although an extremely simple configuration of fitting the fitting protrusion and the fitting hole is adopted, not only the protective plate shifts with respect to the hanging metal fitting in the piping axis direction but also in the piping circumferential direction. It is possible to regulate even the displacement movement. Therefore, the protective plate can be stably attached to the hanging metal fittings while keeping costs down with a simple configuration. In addition, the work of attaching and detaching the protective plate to the hanging bracket can be performed extremely easily.

It is a schematic front view which shows the normal use state of a protection plate. It is a schematic perspective view of a hanging metal fitting. It is a schematic front view which shows the lower surface (surface) of the protection plate. It is a schematic rear view which shows the upper surface (back surface) of a protective plate. It is a schematic side view which shows the side surface which looked at the protection plate from the pipe axis direction. It is a schematic front view which shows the use state of the protection plate which cut off both side edges. It is a schematic front view which shows the use state of the protection plate at the time of supporting the vicinity of a bent part of a pipe with a hanging metal fitting.

Hereinafter, embodiments embodying the present invention will be described with reference to the drawings.

First of all, referring to FIGS. 1 and 2, a covered pipe 101 for air conditioning and hot water supply (a pipe covered with a heat insulating material, hereinafter referred to as “pipe”) is suspended and held on the ceiling 100 of the building. The structure of the hanging metal fitting 50 will be described.

The hanging metal fittings 50 shown in FIGS. 1 and 2 are made of metal, and have a substantially annular shape for surrounding and holding a turnbuckle portion 51 fastened to a hanging bolt 102 provided on the ceiling 100 and a pipe 101. The band portion 52 of the above is provided.

A suspension nut 53 screwed into the suspension bolt 102 is attached to the turnbuckle portion 51. Needless to say, the hanging metal fitting 50 is suspended from the ceiling 100 by screwing the hanging nut 53 into the hanging bolt 102 of the ceiling 100. The turnbuckle portion 51 has a pair of bracket pieces 54. On the other hand, the band portion 52 has a pair of holding pieces 55 that sandwich both bracket pieces 54 of the turnbuckle portion 51 from the outside.

The turnbuckle portion 51 and the band portion 52 are connected by sandwiching both bracket pieces 54 with both holding pieces 55 from the outside and tightening both bracket pieces 54 and both holding pieces 55 together with bolts 56 and nuts 57. There is. At the lower part of the band portion 52, a fitting hole 58 into which the fitting protrusions 13 and 17 of the protective plate 10 described later are detachably fitted is formed so as to penetrate vertically (see FIG. 2).

Next, the structure of the protective plate 10 for the hanging metal fitting 50 will be described with reference to FIGS. 3 and later.

The protective plate 10 is interposed between the pipe 101 and the band portion 52 of the hanging metal fitting 50 that holds the pipe 101. The protective plate 10 of the embodiment is made of a flexible synthetic resin, and includes a plate body 11 that abuts on the pipe 101 from below. The plate body 11 is formed in the shape of a flat support plate having a substantially rectangular shape in a plan view or a curved plate shape having a downward convex shape (see FIG. 5).

On the lower surface (surface) of the plate body 11, a plurality of ridges 12 long in the pipe axial direction A are integrally formed at appropriate intervals in the pipe peripheral direction C. Therefore, the lower surface (surface) of the plate body 11 has an uneven shape with continuous undulations. The ridges 12 group on the lower surface of the plate body 11 are for reinforcement to prevent deterioration of the plate body 11, and are in the pipe axis direction A so that the plate body 11 can be easily curved in the downward convex state of the pipe peripheral direction C. It has a long form. As shown in FIG. 4, the upper surface (back surface) of the plate body 11 is a smooth surface.

As shown in FIGS. 1 and 3 to 7, in the central portion of the lower surface of the plate body 11, a downwardly convex first fitting projection 13 that fits into the fitting hole 58 formed in the lower portion of the band portion 52 is provided. Have been placed. The first fitting protrusion 13 is integrally formed at the central portion of the lower surface of the plate body 11.

The first fitting protrusion 13 has a split pin shape having a shaft portion 14 divided into two by a split groove 15 extending in the vertical (vertical) direction. On the tip end side of each shaft portion 14, an engaging claw 16 that is hooked on the edge portion of the fitting hole 58 is formed. Since the protective plate 10 is made of a flexible synthetic resin, both shaft portions 14 can be elastically deformed in directions close to each other. Therefore, the first fitting protrusion 13 can be engaged with and detached (attached / detached) from the fitting hole 58 of the band portion 52.

A second fitting protrusion 17 having the same configuration as the first fitting protrusion 13 is arranged on a portion of the lower surface of the plate body 11 that is separated from the central portion (the portion of the first fitting protrusion 13) in the piping axial direction A. There is. The second fitting protrusion 17 is also integrally formed at a portion separated from the central portion of the lower surface of the plate body 11 in the pipe axial direction A.

The second fitting protrusion 17 also has a split pin shape having a shaft portion 18 divided into two by a split groove 19, and an engaging claw 20 hooked on the edge portion of the fitting hole 58 on the tip end side of each shaft portion 18. Is formed. Both shaft portions 18 of the second fitting projection 17 are also elastically deformable in directions close to each other. Therefore, the second fitting protrusion 17 can be engaged with and detached (attached / detached) from the fitting hole 58 of the band portion 52 in the same manner as the first fitting protrusion 13. The alignment directions of the shaft portions 14 and 18 of the fitting protrusions 13 and 17 are not limited to the piping axial direction A as in the embodiment, but may be arranged in the piping circumferential direction C, and these directions A and C may be arranged. It may be in the direction of intersection, and it does not matter in particular.

As shown in FIGS. 3 and 4, etc., on both sides of the virtual center line AL extending in the pipe axis direction A in the plate body 11, continuous or discretely formed along the pipe axis direction A for cutting. The fragile portions 21 are formed respectively. Both side edge portions 11a in the pipe peripheral direction C in the plate body 11 can be torn along the fragile portions 21 to be separated and removed (see FIG. 6).

That is, in the plate body 11 of the embodiment, the length of the pipe peripheral direction C can be changed into two types, large and small. Therefore, only one type of protective plate 10 can be applied to a plurality of types of hanging metal fittings 50 having different inner diameters of the band portion 52, which is convenient. The fragile portion 21 of the embodiment has a perforated shape, but is not limited to this, and may be, for example, a thin-walled score.

As shown in FIGS. 1 and 3 to 7, the side edge portion 11a and the fragile portion 21 intersecting the virtual line CL1 extending in the pipe circumferential direction C through the first fitting projection 13 in the plate body 11 , The first notch portions 22a and 22b are formed, respectively.

The first fitting protrusion 13 and the first notched portions 22a and 22b are provided on the plate body 11 in a positional relationship so as to overlap the band portion 52 when the protective plate 10 is attached to the band portion 52. Therefore, there is an advantage that the fitting projections 13 and 17 of the protective plate 10 can be easily aligned in the fitting hole 58 of the band portion 52.

The length of the first cutout portions 22a and 22b in the piping axial direction A is set to a dimension slightly longer than the width of the band portion 52 so that the band portion 52 can be accommodated when the protective plate 10 is attached to the band portion 52. ..

In the embodiment, one first notch portion 22a is provided on each side edge portion 11a of the plate body 11. Then, one first notch portion 22b is provided at a portion on each fragile portion 21. Therefore, the plate body 11 is provided with a total of four first notched portions 22a and 22b.

The first cutout portion 22b on each fragile portion 21 is the first cut on the side edge portion 11a when both side edge portions 11a of the plate body 11 are torn along the fragile portion 21 and separated and removed. It exhibits the same function as the notch 22a.

If the protective plate 10 is provided with the first cutout portions 22a and 22b, even if the protective plate 10 attached to the band portion 52 is moved in the diagonal direction intersecting the pipe axial direction A or the pipe peripheral direction C, the first Since the band portion 52 is caught in the notch portions 22a and 22b, the displacement movement of the protective plate 10 can be regulated. Therefore, the protective plate 10 can be maintained in a more stable mounting posture with respect to the hanging metal fitting 50.

As shown in FIGS. 1 and 3 to 7, the side edge portion 11a and the fragile portion 21 intersecting the virtual line CL2 extending in the pipe circumferential direction C through the second fitting projection 17 in the plate body 11 , The second notch portions 23a, 23b having the same configuration as the first notch portions 22a, 22b are formed, respectively.

In the embodiment, one second notch 23a is provided on each side edge 11a of the plate body 11, and one second notch 23b is provided on each fragile portion 21. Is provided. Therefore, the plate body 11 is provided with a total of four second notched portions 23a and 23b. Needless to say, the second notch portions 23a and 23b have the same effect as the first notch portions 22a and 22b.

As shown in FIGS. 1, 3, 4, and 6, locking holes 24 are formed at the four corners of the region sandwiched between the fragile portions 21 in the plate body 11. In the embodiment, the binding band 103 is inserted through the locking holes 24 arranged in the circumferential direction C of the pipe, and the pipe 101 and the protective plate 10 can be bound by the binding band 103.

In the above configuration, when the protective plate 10 is attached to the hanging metal fitting 50, usually, in order to make the amount of protrusion of the protective plate 10 from the band portion 52 about the same in a well-balanced manner, the first fitting projection 13 is fitted to the band portion 52. It will be fitted into the joint hole 58 from above. That is, after loosening the bolts 56 and nuts 57 of the hanging metal fitting 50 and expanding the band portion 52 so that both holding pieces 55 are separated, the protective plate 10 is placed in the band portion 52 and the first fitting protrusion 13 is fitted. It is forcibly fitted into the joint hole 58 from above.

Then, as a result of the both engaging claws 16 of the first fitting protrusion 13 projecting and being caught on the edge of the fitting hole 58 by the elastic restoring force, the protective plate 10 is attached to the hanging metal fitting 50 so as not to be detached. After that, both bracket pieces 54 are sandwiched from the outside by both holding pieces 55, both bracket pieces 54 and both holding pieces 55 are fastened together with bolts 56 and nuts 57, and the pipe 101 is sandwiched together with the protective plate 10 by the band portion 52. To do.

According to the protective plate 10 of the embodiment, although the extremely simple configuration of fitting the first fitting protrusion 13 and the fitting hole 58 is adopted, the protective plate 10 with respect to the hanging metal fitting 50 is oriented in the piping axial direction A. It is possible to regulate not only the displacement movement of the pipe but also the displacement movement in the circumferential direction C of the pipe. Therefore, the protective plate 10 can be stably attached to the hanging metal fitting 50 while keeping costs down with a simple configuration.

Needless to say, in the protective plate 10 of the embodiment, the weight of the pipe 101 can be dispersed to suppress the biting of the pipe 101 covering portion into the band portion 52 (the crushing or tearing of the pipe 101 covering portion can be prevented).

If it is desired to remove the protective plate 10 from the hanging metal fitting 50, pinch both engaging claws 16 of the first fitting protrusion 13 fitted in the fitting hole 58 of the band portion 52 with fingers or the like, and both shaft portions 14 Should be deformed against elasticity, and both shaft portions 14 may be brought close to each other. Then, since both engaging claws 16 can pass through the fitting hole 58, the first fitting protrusion 13 and the fitting hole 58 can be obtained by simply pushing the first fitting protrusion 13 out of the fitting hole 58. The mating state of is released.

As can be seen from the above description, according to the protective plate 10 of the embodiment, the displacement movement of the protective plate 10 with respect to the hanging metal fitting 50 in the pipe axial direction A and the pipe circumferential direction C is regulated while trying to control the cost with a simple configuration. Despite being a protective plate 10 that can be made, the work of attaching / detaching the protective plate 10 to / from the hanging metal fitting 50 can be performed extremely easily.

By the way, when there is a portion of the pipe 101 that bends in an inverted L shape in order to arrange it near a corner portion of a building, a large load is likely to be applied to the bent portion in the vertical direction due to its own weight. Therefore, it is preferable to hold the position of the pipe 101 as close to the bent portion as possible by the hanging metal fitting 50.

Therefore, in FIG. 7, in order to shorten the amount of protrusion of the protective plate 10 from the band portion 52 toward the bent portion and bring the hanging metal fitting 50 closer to the bent portion, the second fitting projection 17 is provided with the fitting hole 58 of the band portion 52. It is fitted from above. The attachment / detachment mode of the second fitting protrusion 17 with respect to the fitting hole 58 is the same as the attachment / detachment mode of the first fitting protrusion 13 described above. In this case, the same function and effect as the above-mentioned example of the first fitting projection 13 can be obtained, and the vicinity of the bent portion of the pipe 101 can be appropriately supported by the hanging metal fitting 50 without the presence of the protective plate 10 obstructing the effect.

The configuration of each part in the present invention is not limited to the illustrated embodiment, and various changes can be made without departing from the spirit of the present invention.

A Piping axis direction AL Virtual center line C Piping circumferential direction CL1 Virtual line CL2 Virtual line 10 Protective plate 11 Plate body 11a Side edge portion 13,17 Fitting protrusion 14,18 Shaft portion 15,19 Split groove 16,20 Engagement claw 21 Vulnerable parts 22a, 22b 1st notch part 23a, 23b 2nd notch part 50 Hanging metal fittings 52 Band part 58 Fitting hole 101 Piping 102 Hanging bolt

Claims (5)

It is a protective plate that is interposed between the pipe covered with the heat insulating material and the band part of the hanging metal fitting that holds it.
A plate body made of synthetic resin that abuts on the pipe and has a substantially rectangular plate shape in a plan view is provided. The first fitting protrusion of is formed,
In the plate body, fragile portions for cutting formed continuously or discretely along the pipe axis direction are formed on both sides of the virtual center line extending in the pipe axis direction and passing over the first fitting projection. Formed,
Protective plate for hanging brackets. The first fitting protrusion is formed in a split pin shape having a shaft portion divided into two by a split groove, and an engaging claw that is hooked on the edge of the fitting hole is on the tip end side of each shaft portion. Is formed, and the two shaft portions are elastically deformable in directions close to each other.
The protective plate for the hanging metal fitting according to claim 1. In the plate body, a first notch is formed at a side edge portion and a fragile portion that intersect with a virtual line extending in the circumferential direction of the pipe through the first fitting projection.
The protective plate for the hanging metal fitting according to claim 1 . It is a protective plate that is interposed between the pipe covered with the heat insulating material and the band part of the hanging metal fitting that holds it.
A plate body made of synthetic resin that abuts on the pipe and has a substantially rectangular plate shape in a plan view is provided. The first fitting protrusion of is formed,
The first fitting is located on the lower surface of the plate body, which is separated from the central portion in the pipe axis direction and extends in the piping axis direction and passes over the first fitting protrusion on the virtual center line. A second fitting protrusion having the same configuration as the protrusion is formed.
Protective plate for hanging brackets. A first notch is formed at a side edge portion of the plate body that intersects with a virtual line extending in the circumferential direction of the pipe through the first fitting protrusion, and the second fitting portion is formed in the plate body. A second notch is formed at the side edge portion that intersects the virtual line extending in the circumferential direction of the pipe through the protrusion.
The protective plate for the hanging metal fitting according to claim 4.

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