JP3346953B2 - Fence beam pipe fittings - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a beam pipe joint for attaching a beam pipe to a support in a fence such as a protective fence.

[0002]

2. Description of the Related Art FIGS. 9 and 10 show a conventional joint for a beam pipe in a protective fence. In both figures, 1 is a support,
2 is a beam pipe, and the beam pipe joint 3 is
The bracket 4 includes a bracket 4 formed by bending a steel plate, and an inner sleeve 5 sandwiched inside the bracket 4. Then, the bracket 4 is fixed to the front surface of the column 1 with bolts 6 and nuts 7 penetrating from behind the column 1, and the central portion of the inner sleeve 4 is fixed to the bracket 4.
Further, the inner sleeve 5 is fixed to the bracket 4 with bolts 8 and nuts 9 penetrating vertically, the beam pipes 2 are respectively inserted on both sides of the inner sleeve 5, and bolts 10 penetrating the beam pipe 2 and the inner sleeve 5 vertically and The beam pipe 2 is fixed to the inner sleeve 5 by a nut 11.

[0003]

According to the above conventional joint for a beam pipe, the bracket 4, the inner sleeve 5, the bolt 6 and the nut 7 for fixing the bracket, the inner sleeve, A bolt 8 and a nut 9 for fixing and a bolt 10 and a nut 11 for fixing a beam pipe are required, and the number of parts is large. Therefore, parts management is complicated, and
The workability when attaching the beam pipe 2 to the column 1 is poor. Also, since many bolts and nuts are exposed,
Not good in appearance. Also, if the span between the adjacent columns 1 varies, the gap between the end of the beam pipe 2 and the bracket 4 (the portion where the inner sleeve 5 can be seen) is not constant, which is also undesirable in appearance.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional drawbacks, and can reduce the number of parts for mounting a beam pipe on a support, thereby facilitating parts management and improving beam pipe mounting. An object of the present invention is to provide a joint for a beam pipe capable of improving workability and further improving appearance.

[0005]

A beam pipe joint according to the present invention for solving the above-mentioned problems comprises a hollow bracket portion which is attached to a column in contact with a front surface of the column, and a beam pipe which horizontally projects laterally from the bracket portion. The inner sleeve part that supports the beam pipe by fitting the end of
It is integrally cast in such a manner that a cylindrical space into which the end of the beam pipe enters is formed between the inner surface of the bracket portion and the outer surface of the base end of the inner sleeve portion. A screw hole for screwing a bolt for fixing the bracket portion to the column is provided, and a screw hole for screwing a bolt for fixing the beam pipe is provided on a lower surface of the inner sleeve portion.

A second aspect of the present invention is characterized in that a drain hole is formed in the bracket portion at the cylindrical space position.

According to a third aspect of the present invention, a recess is formed around the screw hole on the outer peripheral surface of the inner sleeve portion.

According to a fourth aspect of the present invention, the connecting portion between the bracket portion and the inner sleeve portion is formed in the form of a partition wall for separating left and right cylindrical spaces between the inner surface of the bracket portion and the outer surface of the inner sleeve portion. The position of the partition wall-shaped joint is shifted from the center of the joint to one side in the left-right direction.

[0009]

When the beam pipe is attached to the column using the beam pipe joint having the above configuration, the back of the bracket part of the beam pipe joint, which is one part, is applied to the column, and a bolt penetrated from the back side of the column is attached to the bracket. The beam pipe joint is fixed to the column by screwing it into the screw hole of the part and tightening and fixing. Further, the beam pipe is fitted into the outer periphery of the inner sleeve portion, and its end is inserted into a cylindrical space between the bracket portion and the inner sleeve portion. Thus, the end of the beam pipe is hidden and not exposed. Then, the beam pipe is fixed to the inner sleeve part by a bolt screwed into a screw hole of the inner sleeve part through a hole formed in the beam pipe and tightened.

In the second aspect, the rainwater that has entered the cylindrical space between the bracket and the inner sleeve is discharged from a drain hole formed in the bracket.

According to the third aspect of the present invention, since the recess is formed around the screw hole on the lower surface side of the inner sleeve portion, when the beam pipe is strongly tightened with the head of the bolt screwed into the screw hole, the beam pipe is formed. Deforms slightly to fit into the recess. The reaction force of the beam pipe generated by this causes springback, and exerts an effect replacing the spring washer. Therefore, no spring washer or the like is required.

In the fourth aspect, the connecting portion between the bracket portion and the inner sleeve portion inevitably partitions the left and right cylindrical spaces, but this partition wall-shaped connecting portion is shifted to one side in the left-right direction of the joint. Therefore, one cylindrical space is deep and the other is shallow. Therefore, when attaching the beam pipe to the beam pipe joint of the column on both sides of the span, push one end of the beam pipe deep into the deep cylindrical space of the beam pipe joint on one column,
The other end of the beam pipe is inserted into the shallow cylindrical space of the beam pipe joint on the other column side, and then slid to the final predetermined position so that the beam pipe joint is attached to the column on both sides of the span. The beam pipe can be attached to the left and right supports while being fixed.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention is shown in FIGS.
FIG. 1 is a front view of a partial cutout in a state where a beam pipe 2 is attached to a column 1 using a beam pipe joint 21 of the embodiment, FIG. 2 is a plan view of the same, and FIG. It is. Beam pipe joint 21 of this embodiment
Is a hollow bracket portion 22 that is attached to the support column 1 in contact with the front surface of the support column 1, and a left and right side projecting horizontally from the bracket portion 22 and supporting the beam pipe 2 by fitting an end of the beam pipe 2 into the hollow portion. The bracket portion 22 and the left and right inner sleeve portions 23 are formed by a cylinder into which the end of the beam pipe 2 enters between the inner surface of the bracket portion 22 and the outer surface of the base end portion of the inner sleeve portion 23. It is integrally cast with iron or aluminum or the like in a form in which a space 24 is formed. A screw hole 26 into which a bolt 25 for fixing the bracket portion 22 to the column 1 is screwed is provided at the center on the back side of the bracket portion 22. In the embodiment, a circular pipe-shaped seat 2 along the outer periphery of a column 1 which is a round pipe is provided on the back of the bracket 22.
2a is formed. In addition, the inner sleeve portion 2
Bolt 27 for fixing beam pipe 2 to the lower surface of 3
Are provided at, for example, two locations on each of the left and right sides. The left and right inner sleeve portions 23 are respectively integrally connected to the bracket portions 22 at positions slightly right and left from the center of the bracket portions 22 when viewed from the front. As shown in FIG. 5, which is a side view of only the beam pipe joint 21, the cylindrical space 24
The left and right end surfaces (the left and right end surfaces in FIG. 1) are circular along the outer diameter of the beam pipe 2 and slightly eccentric with respect to the outer circumference of the inner sleeve portion 23. As a result, the gap (cylindrical space) between the inner sleeve portion 23 and the bracket portion 22 is as narrow as the plate thickness of the beam pipe 2 on the lower side and slightly wider on the upper side, so that the beam pipe 2 is stabilized to the beam pipe joint 21. At the same time, the beam pipe 2 can be easily inserted.

Drain holes 30 and 31 for draining rainwater are formed on the lower surface of the bracket portion 22, and a drain hole 32 is also formed on the upper surface of the base end portion of the inner sleeve portion 23. ing. Thereby, beam pipe 2
Rainwater that has entered the beam pipe joint 21 from the joint between the beam pipe joint 21 and the water pipe joints 21
1 to minimize the generation of rust and the like.

A recess 33 is formed around the screw hole 28 on the lower surface of the inner sleeve 23. For this reason, the beam pipe 2 is held by the head of the bolt 27 screwed into the screw hole.
When the beam pipe 2 is strongly tightened, the beam pipe 2 is slightly dented and deformed so as to fit into the recess 33. The reaction force of the beam pipe 2 generated by this causes springback, and exerts an effect replacing the spring washer. Therefore, the beam pipe 2 can be firmly fixed without requiring a spring washer or the like.

When the beam pipe 2 is attached to the column 1 using the beam pipe joint 21 described above, the seat 22a on the back of the bracket 22 is placed on the front of the column 1, and the column 1 is
The bolt 25 penetrated from the back side of the
Screw into the screw hole 26 of the
2 and therefore the beam pipe joint 21 is fixed to the column 1. Then, the beam pipe 2 is inserted into the outer periphery of the inner sleeve portion 23 and the end thereof is inserted into the cylindrical space 24.
Plug in. Thus, the end of the beam pipe 2 is hidden and is not exposed. Therefore, it is preferable in appearance. And
The beam pipe 2 is fixed to the inner sleeve part 23 by a bolt 27 screwed into a screw hole 28 of the inner sleeve part 23 through a hole 2 a formed in the beam pipe 2. Thus, the beam pipe 2 is attached to the column 1 via the beam pipe joint 21. Since this mounting operation does not require any nuts and uses a small number of parts, it can be performed efficiently and the parts management is easy. Further, as shown in FIG. 6, the exposure of the bolts and nuts is small, and even if they are exposed, they are inconspicuous, so that the appearance is good.

FIGS. 7 and 8 show a second embodiment (claim 4). In this embodiment, portions common to those of the first embodiment described above are denoted by the same reference numerals, and description thereof is omitted. The beam pipe joint 21A of this embodiment is different from the above-described beam pipe joint 21 in a joint 40 between the bracket 22 and the inner sleeve 23. That is, the connecting portion for integrally connecting the bracket portion 22 and the inner sleeve portion 23 necessarily partitions the left and right cylindrical spaces, but the connecting portion 40 of the beam pipe joint 21A is formed on the inner surface of the bracket portion 22. And the outer surface of the inner sleeve portion 23 are formed in the form of a single partition wall for partitioning the left and right cylindrical spaces 24a, 24b, and the position of the partition wall-like connecting portion 40 is set from the center in the left-right direction of the joint. It is shifted to one side (to the left in the figure). The connecting portion 40 may be basically provided only at a portion between the inner surface of the bracket portion 22 and the outer surface of the inner sleeve portion 23.
In the illustrated example, the inner sleeve 2
3 is also formed to extend to the inner surface side. A hole 40a for facilitating casting is formed in the inner surface of the inner sleeve portion of the partition wall-shaped connecting portion 40.

According to the beam pipe joint 21A, since the partition wall-shaped coupling portion 40 is displaced to one side in the left-right direction of the joint, as shown, one cylindrical space 24a is deep and the other cylindrical space 24b is provided. Is shallow. Therefore, when attaching the beam pipe 2 to the columns 1 on both sides of the span, the beam pipe 2 can be attached to the left and right columns 1 with the beam pipe joint 21A fixed to the left and right columns 1. That is, the beam pipe 2 on the right side of the column 1 in FIG. 7 will be described.
Side, the end of the beam pipe 2 can be pushed deeper than the final mounting position as shown by the two-dot chain line, so that the left end of the beam pipe 2 is inserted into the deep cylindrical space 24a of the beam pipe joint 21A. And push it all the way in,
Next, the right end (not shown) of the beam pipe 2 is connected to the shallow cylindrical space 24b of the beam pipe joint 21A of the right column 1 (not shown in FIG. 7, but the same as the left part in FIG. , And slide the beam pipe 2 to the right to the final mounting position shown by the solid line.
Both ends of the beam pipe 2 can be attached to both joints 21A while the joints 21A for beam pipes are fixed to the left and right columns 1.

In the embodiment, the inner sleeve portions 23 are provided on both sides of the bracket portion 22. However, when the inner sleeve portions 23 are used as end supports, the inner sleeve portion 23 is provided only on one side of the bracket portion 22 and the other side is provided. The side shall be closed.
Further, the inner sleeve portion on the terminal side may be shortened, and the shortened inner sleeve portion may be covered with a cap-shaped terminal member having the same diameter as the beam pipe. Further, the structure of the bracket portion 22 is not necessarily limited to the outer shape and the inner shape as in the embodiment. In short, a cylindrical space into which the end of the beam pipe can be inserted is formed between the inner surface of the inner sleeve and the outer surface of the base end of the inner sleeve. Any structure is acceptable.

[0020]

According to the present invention, since the bracket portion and the inner sleeve portion are integrally cast and provided with a screw hole for fixing to the column and a screw hole for fixing the beam pipe, The number of parts for attaching the beam pipe to the column is greatly reduced. This gives
Parts management becomes easier, and workability when installing the beam pipe is improved. Also, the bolts and nuts are slightly inconspicuous, and the end of the beam pipe is hidden and invisible, so that the appearance is improved. Also, a change in the span between adjacent columns during construction is handled by slightly sliding the beam pipe, and this does not appear in the appearance.

According to the second aspect, the rainwater that has entered the joint for the beam pipe is easily discharged from the drain hole, and inconvenience such as rust can be prevented as much as possible.

According to the third aspect, the beam pipe can be firmly fixed without requiring a spring washer or the like.

According to the fourth aspect of the present invention, the partition wall-shaped connecting portion for integrally connecting the bracket portion and the inner sleeve portion is shifted to one side in the left-right direction of the joint. Thus, the beam pipe can be mounted on the column while the beam pipe joint is fixed to the column on both sides of the span, and the workability is improved.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of a state in which a beam pipe is attached to a support using a beam pipe joint according to one embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a sectional view taken along line AA of FIG. 1;

FIG. 4 is a sectional view taken along line BB in FIG. 1;

FIG. 5 is a left side view showing only a beam pipe joint in FIG. 1;

FIG. 6 is a front view showing an appearance of the beam pipe joint.

FIG. 7 is a partially cutaway front view showing an embodiment of the joint for a beam pipe according to claim 4;

FIG. 8 is a plan view of FIG. 7;

FIG. 9 is a front view of a state in which a beam pipe is attached to a column using a conventional beam pipe joint.

FIG. 10 is a right side view of FIG. 9 with a beam pipe removed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Prop 2 Beam pipe 21, 21A Beam pipe joint 22 Bracket part 23 Inner sleeve part 24 Cylindrical space 24a Deep cylindrical space 24b Shallow cylindrical space 25, 27 Bolt 26, 28 Screw hole 30, 31, 32 Drain hole 33 recess 40 joint of partition wall shape

Claims (4)

(57) [Claims] 1. A hollow bracket portion which is attached to a support in contact with a front surface of a support, and an inner sleeve portion which projects horizontally from the bracket portion and which horizontally supports an end of a beam pipe to support the beam pipe. And a cylindrical space in which the end of the beam pipe enters is formed between the inner surface of the bracket portion and the outer surface of the base end portion of the inner sleeve portion. A fence comprising: a screw hole into which a bolt for fixing the bracket portion is fixed to a support; and a screw hole into which a bolt for fixing a beam pipe is screwed on a lower surface of the inner sleeve portion. Beam pipe fittings. 2. The joint for a beam pipe of a fence according to claim 1, wherein a drain hole is made in the bracket portion at the cylindrical space position. 3. A joint for a beam pipe of a fence according to claim 1, wherein a recess is formed around a screw hole on an outer peripheral surface of said inner sleeve portion. 4. A joining portion between the bracket portion and the inner sleeve portion is formed in the form of a partition wall for separating left and right cylindrical spaces between an inner surface of the bracket portion and an outer surface of the inner sleeve portion. The joint for a beam pipe according to claim 1, wherein the position of the wall-shaped joint is shifted from the center of the joint to one side in the left-right direction.