JP3476536B2 - Guard fence joint - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protective fence joint, and more particularly, to a protective fence joint having a high lateral fixation strength and an excellent appearance.

[0002]

2. Description of the Related Art A conventional protective fence joint will be described with reference to the drawings. FIG. 10 is a front view showing a state in which a horizontal casket is fixed to a column by a conventional guard fence joint, and FIG.
It is the sectional view on the AA line of FIG.

In FIGS. 10 and 11, reference numeral 1 is a column, and 2 is a horizontal shaft fixed to the column 1 by a conventional guard fence joint A. The conventional guard fence joint A includes a disk-shaped pedestal 3 and a bracket 4. One side surface of the pedestal 3 is curved so as to be in close contact with the side surface of the support column 1, and the other side surface is formed in a flat shape. A through hole 5 is formed in the central portion.

An insertion hole 7 is formed in the center of the vertical cross-sectional view of the bracket 4 for inserting and fixing the connecting portion of the horizontal joint 2 connected to each other by an inner sleeve 6. Has a threaded through hole 8 for the bolt 12. One side surface of the bracket 4 on the pedestal 3 side is formed in a flat shape, and the one side surface is
A screw hole 9 is formed.

The horizontal shaft 2 and the inner sleeve 6 are
The two bolts 10 on one side are connected to each other by being screwed into a nut 26 which is pre-welded in the inner sleeve 6.

According to the conventional guard fence joint A thus constructed, the horizontal rod 2 is fixed to the support column 1 as follows. That is, by inserting the bolt 11 into the through hole (not shown) formed in the column 1 and the through hole 5 of the pedestal 3 and screwing the tip of the screw portion of the bolt 11 into the screw hole 9 of the bracket 4, the bracket 4 is pedestal. Prop 1 through 3
Fixed to. Then, the inner sleeve 6 is inserted into the insertion hole 7 of the bracket 4, both ends of the inner sleeve 6 projecting from both sides of the insertion hole 7 are inserted into the horizontal shaft 2, and both are fixed by a total of four bolts 10. To do. Then, when the bolt 12 is tightened, the connecting portion of the horizontal joint 2 is fixed to the bracket 4.

[0007]

However, the above-mentioned conventional guard fence joint A has the following problems. Since the connecting portion of the horizontal shaft 2 is fixed to the bracket 4 only by the tip of the threaded portion of the bolt 12, the fixing strength of the connecting portion is low and rattling is likely to occur. Since the bracket 4 does not have a connecting action between the horizontal joints 2, the inner sleeve 6 is lengthened and the inner sleeve 6 is
It was necessary to firmly connect the connection with the horizontal rod 2 with a total of four bolts 10. The heads of the bolts 12 project from the lower surface of the bracket 4, and the four bolts 1
The head of No. 0 was protruding, so the appearance was inferior. Since the bracket 4 and the pedestal 3 contact each other in a plane, it is difficult to position the bracket 4 when assembling the joint.

Therefore, an object of the present invention is to fix the horizontal shaft firmly to the column without rattling, and to reduce the number of bolt heads projecting from the outer surface, thereby having an excellent aesthetic appearance. Another object of the present invention is to provide a guard fence joint that can be easily assembled and can easily cope with road inclination.

[0009]

SUMMARY OF THE INVENTION According to the present invention, in a guard fence joint for fixing a connecting portion of lateral joints connected to each other by an inner sleeve to a column, one of them is curved so as to be closely attached to a side surface of the column. Side surface, a circular recess formed on the other side surface, and a disk-shaped pedestal consisting of a through hole formed in the central portion of the circular concave portion, and the horizontal recess formed in substantially the central portion, The connecting portion is inserted, an insertion hole for gripping and fixing the connecting portion, a lower portion of the insertion hole,
A slit formed along the insertion hole, a protrusion formed on one side surface and fitted into the circular recess of the pedestal, a through-screw hole formed in the center of the protrusion, and the insertion hole. A bracket consisting of a bolt hole formed in the lower part of the protrusion in a direction orthogonal to the slit, and for narrowing the gap between the slits to fix the connecting portion in the insertion hole to the bracket. A tightening bolt screwed into the bolt hole of the bracket, wherein the bracket is a bolt that is screwed into the through screw hole of the bracket through the through hole formed in the column and the through hole of the pedestal. It is characterized in that it is fixed to the column via the pedestal.

A protrusion may be formed on the other side surface of the circular pedestal, and a circular recess into which the protrusion fits may be formed on the one side surface of the bracket.

The axis of the insertion hole of the bracket may be eccentric to give a difference in wall thickness around the insertion hole, thereby giving an elastic force to the bracket.

[Action]

If a slit is formed in the insertion hole for the horizontal joint portion provided in the bracket and the gap between the slits is narrowed by a screw against the elastic force of the bracket, the horizontal joint portion in the insertion hole is closed. The entire bracket can be firmly fixed. This eliminates the need for bolts for fixing the connecting portion for connecting the lateral joints to the bracket, and further reduces the number of bolts for fixing the inner sleeve and the lateral joints. Therefore, the number of protruding bolt heads is reduced, and an excellent aesthetic appearance can be obtained. Furthermore,
By fitting the protrusion formed on the bracket into the recess formed on the pedestal, the assembly can be easily performed and the inclination of the road can be easily dealt with.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, one embodiment of a guard fence joint of the present invention will be described with reference to the drawings.

FIG. 1 is a front view showing a state in which a horizontal casket is fixed to a column by a guard fence joint of the present invention, FIG. 2 is a partial sectional view taken along line BB of FIG. 1, and FIG. FIG. 4 is a front view of a pedestal of the protective fence joint of the present invention, FIG. 5 is a plan view of the pedestal of the protective fence joint of the present invention, and FIG. 6 is a protective fence of the present invention. FIG. 7 is a plan view of the bracket in the joint for use in the invention, and FIG. 7 is a side view of the bracket in the joint for the guard fence of the present invention.

In FIGS. 1 to 7, 1 is a column, 2
Is a horizontal joint fixed to the column 1 by the guard fence joint B of the present invention. The guard fence joint B of this invention is
It is composed of a disk-shaped pedestal 13, a bracket 14, and a tightening bolt 15 for narrowing a slit interval of the bracket 14 which will be described later.

One side surface 16 of the pedestal 13 is curved in conformity with the outer surface shape of the support column 1 so as to be in close contact with the side surface of the support column 1, and a circular recess 17 is formed on the other side surface. The through hole 1 is provided at the center of the circular recess 17.
8 is formed.

At a substantially central portion of the vertical cross section of the bracket 14, a connecting portion of the horizontal shaft 2 which is connected to each other by a bolt 10 via an inner sleeve 6 is inserted, and an insertion hole 19 for holding and fixing the connecting portion is formed. Has been done. Insertion hole 1
A slit 20 is formed in the lower part of 9. The inner diameter of the insertion hole 19 with the slit 20 opened is larger than the diameter of the horizontal shaft 2. Since the bracket 14 is made of a highly elastic material such as metal or synthetic resin, the interval between the slits 20 is forcibly narrowed by the tightening force of the tightening bolts 15, and the slit interval is reduced by releasing the tightening force. Return to the original state. This spring action can be easily provided by forming a part of the wall thickness of the bracket 14 around the insertion hole 19 to be thin, that is, by eccentricizing the axial center of the insertion hole 19. A circular protrusion 21 that fits into the circular recess 17 of the pedestal 13 is formed on one side surface of the bracket 14, and a through screw hole 22 is formed in the central portion of the circular protrusion 21.
Below the insertion hole 19 of the bracket 14, the circular protrusion 2
A bolt hole 23 is formed from the first side in a direction orthogonal to the slit 20.

If the front shape of the circular protrusion 21 is circular, the side surface may be formed in a partial circular shape as shown in FIG. 10, or as shown in FIG. Etc. may be formed. In this case, it goes without saying that the shape of the recess 17 of the pedestal 13 into which these are fitted also needs to be formed in accordance with these shapes.

A protrusion 21 may be formed on the other side surface of the circular pedestal 13, and a circular recess 17 into which the protrusion 21 is fitted may be formed on one side surface of the bracket 14.

The tightening bolt 15 has a function of being screwed into the bolt hole 23 of the bracket 14 and narrowing the gap between the slits, thereby gripping and fixing the connecting portion of the lateral rod 2 in the insertion hole 19.

The bracket 14 is fixed to the column 1 through the pedestal 13 by bolts 25 that are screwed into the through screw holes 22 of the bracket 14 through the through holes 24 formed in the column 1 and the through holes 18 of the pedestal 13. There is.

According to the guard fence joint B of the present invention having the above-described structure, the horizontal shaft 2 is fixed to the column 1 as follows. That is, the through hole 2 formed in the column 1.
4 and the pedestal 13 through the bolt 25, and the screw portion 25 passes through the through-screw hole 22 of the bracket 14 and the screw 25 is screwed in until it comes into contact with the inner sleeve 6. Fixed to the column 1. Then, the inner sleeve 6 is passed through the insertion hole 19 of the bracket 14, both ends of the inner sleeve 6 projecting from both sides of the insertion hole 19 are inserted into the horizontal joints 2, and a total of two bolts 10 are used to move the horizontal sleeve 2.
The end portion of is fixed to the inner sleeve 6. A nut 26 for the bolt 10 is welded in the inner sleeve 6 in advance. Then, when the bolt 15 is tightened, the connecting portion of the horizontal shaft 2 is firmly gripped and fixed to the bracket 14. The bolt 15 is tightened by inserting a hexagonal wrench into the hexagonal recess formed in the head of the bolt 15.

[0023]

As described above, according to the present invention, since the horizontal joint portion can be gripped and fixed by the entire bracket, the horizontal joint portion can be firmly fixed to the bracket. This eliminates the need for bolts for fixing the connecting portion for connecting the lateral joints to the bracket, and further reduces the number of bolts for fixing the inner sleeve and the lateral joints. Therefore, the number of protruding bolt heads is reduced, and an excellent aesthetic appearance can be obtained. Further, by fitting the protrusion formed on the bracket into the concave portion formed on the pedestal, there is a useful effect that the assembly is easy and the inclination of the road can be easily coped with.

[Brief description of drawings]

FIG. 1 is a front view showing a state in which a horizontal casket is fixed to a column by a guard fence joint of the present invention.

FIG. 2 is a partial sectional view taken along line BB of FIG.

FIG. 3 is a sectional view taken along line CC of FIG.

FIG. 4 is a front view of the pedestal of the protective fence joint of the present invention.

FIG. 5 is a plan view of a pedestal in the guard fence joint of the present invention.

FIG. 6 is a plan view of a bracket of the guard fence joint of the present invention.

FIG. 7 is a side view of a bracket in the protective fence joint of the present invention.

FIG. 8 is a side view showing another protrusion in the present invention.

FIG. 9 is a side view showing still another projection according to the present invention.

FIG. 10 is a front view showing a state in which a horizontal shaft is fixed to a support by a conventional guard fence joint.

11 is a cross-sectional view taken along the line AA of FIG.

[Explanation of symbols]

A: Conventional guard fence joint, 1: support, 2: Yokosuka, 3: pedestal, 4: Bracket, 5: through hole, 6: Inner sleeve, 7: insertion hole, 8: through hole, 9: screw hole, 10: bolt, 11: bolt, 12: bolt, B: Guard fence joint of the present invention, 13: Pedestal, 14: bracket, 15: Tightening bolt, 16: One side of the pedestal, 17: circular recess, 18: through hole, 19: insertion hole, 20: slit, 21: circular protrusion, 22: Through screw hole, 23: bolt holes, 24: through hole, 25: bolt, 26: Nut.

Claims (3)

(57) [Claims] 1. A protective fence joint for fixing the connecting portions of the horizontal joints, which are connected to each other by an inner sleeve, to a support column, wherein one side surface curved so as to be in close contact with the side surface of the support column,
A circular recess formed on the other side surface, and a disk-shaped pedestal consisting of a through hole formed in the central portion of the circular recess, and the connecting portion of the horizontal shaft formed substantially in the central portion, An insertion hole for inserting and holding and fixing the insertion hole, a slit formed along the insertion hole at a lower portion of the insertion hole, and fitted into the circular recess of the pedestal formed on one side surface. A bracket including a protrusion, a through screw hole formed in the central portion of the protrusion, and a bolt hole formed in the lower portion of the insertion hole in a direction orthogonal to the slit from the protrusion side, and a gap between the slits. And a tightening bolt screwed into the bolt hole of the bracket for fixing the connecting portion in the insertion hole to the bracket, wherein the bracket is a penetrating hole formed in the column. And through the through hole of the base by bolts screwed into the threaded through hole of the bracket, fences fittings, characterized in that fixed to the strut through the pedestal. 2. The disc-shaped pedestal is formed from one side surface curved so as to be in close contact with the side surface of the column, a protrusion formed on the other side surface, and a through hole formed in a central portion of the protrusion. Then, the bracket has an insertion hole for inserting and holding the connecting portion of the horizontal shaft, which is formed in a substantially central portion thereof, and a lower portion of the insertion hole, along the insertion hole. A slit formed, a circular recess formed on one side surface and fitted into the protrusion of the pedestal,
It is characterized by comprising a through-screw hole formed in the central portion of the circular recess and a bolt hole formed in the lower portion of the insertion hole from the side of the circular recess in a direction orthogonal to the slit. The guard fence joint according to claim 1. 3. The bracket according to claim 1, wherein an axial center of the insertion hole of the bracket is eccentric so as to make a difference in wall thickness around the insertion hole, thus imparting a spring action to the bracket. The protective fence joint according to Item 1 or 2.