JP3243208B2 - fence - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fence, and more particularly, to a fence provided at a boundary between a sidewalk and a road, a boundary of a residential site, and the like.

[0002]

2. Description of the Related Art Conventionally, for example, a protective fence is provided at a boundary between a sidewalk and a road. Such fences are often composed of a plurality of hollow struts and chords erected between the struts, and the chords are bolted to joining members fixed to the struts in advance by welding or the like. ing.

[0003] In such a fence, there is a problem that it takes time and effort to assemble the fence because a welding operation of the joining member to the support is required. Therefore, in order to solve such a problem, Japanese Patent Application Laid-Open No. 7-259039 proposes a joining member that can be inserted into and locked to a support by a one-touch method.

[0004]

However, since the joining member described in the above-mentioned publication is inserted into the insertion hole of the support post along the axial direction (the erection direction) of the chord, the insertion direction is changed to the chord. It becomes the same as the direction of the acting tension. Therefore, when tension is repeatedly applied to the string material due to vibration of the road surface due to traffic of a large vehicle or expansion and contraction of the string material due to a change in temperature,
There is a problem in that the engaging portion of the joining member with the column is damaged or worn away, and the chord is easily detached from the column.

In addition, the connecting member has a structure in which the locking portion to be locked to the support is inserted into the support through the insertion hole. If an attempt is made to increase the size, there arises a problem that the locking portion cannot be inserted into the insertion hole. Therefore, there is a limit in improving the joining state between the column and the chord material using such a joining member.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a fence that can easily join a string member to a column and that can improve the joining state between the column and the string member so that the string member is hard to be detached from the column.

[0007]

The fence according to the present invention comprises at least two columns which are erected at an interval from each other and a string which is erected between these columns. An end is provided with a protrusion protruding toward the column , and the protrusion
Is the thick part provided on the tip side and the thick part
Is also configured with a thin portion provided at least on the proximal end side,
The strut is fitted with protrusions of the chord material in an uneven manner to form the protrusions.
An engaging portion is provided for locking in a direction in which the chord is erected.
The part includes a fitting part in which the thick part of the protrusion is concavely fitted, and a front part.
And an opening into which the thin portion is inserted.
And each of the openings is open both up or down
And the thick part and the thin part are
Can be fitted up and down so as to make an angle with the direction
It is characterized by the ability.

[0008] In the present invention, since the protrusion provided at the end of the chord material is fitted into the engaging portion of the support pillar, the protrusion is provided.
The joining of the chord material to the column is facilitated. In addition, the concave / convex fitting is performed from a direction at an angle with respect to the erection direction of the chord material, and the projection is thereby locked to the engaging portion along the erection direction. It is not necessary to provide the above-mentioned insertion hole, and a larger joining portion of the projection to the support column can be obtained, so that a good joining state can be obtained, and the chord material is hardly detached.

In addition, the projecting portion of the chord material has a thick portion and a thin portion.
And the engaging portion of the strut is thin with the fitting portion where the thick portion is fitted.
Since it is constituted by the opening into which the thick portion is inserted, the projection can be locked to the engagement portion by the difference in thickness between the thick portion and the thin portion, and the structure of the projection and the engagement portion Is simplified, and the fitting of the protruding portion to the engaging portion can be easily performed.

Further, in the fence of the present invention, the projection of the chord may be provided rotatably with respect to the engaging portion of the support. In such a case, by providing the protruding portion so as to be rotatable in the vertical direction with respect to the engaging portion, the chord material is installed at an angle with respect to the horizontal, and the fence is formed of a slope or the like. It will be installed along the slope. Further, by providing the protruding portion so as to be rotatable in the horizontal direction with respect to the engaging portion, the fence can be continuously installed even on a curved or crank-shaped road.

In the above, the engaging portion of the column may be formed of a plurality of collective members combined with each other, and the projection of the chord may be covered with the collective members. In such a case,
Since the protrusion is covered and not exposed, the appearance of the fence is improved and the design is improved.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. [First Embodiment] FIG. 1 is a front view showing a protection fence 1 which is a fence according to the first embodiment, and FIG. 2 is a partially broken front view showing a main part of the protection fence 1 in an enlarged manner. 3 is the arrow III-I in FIG.
4 is an exploded perspective view showing a main part of the protective fence 1, and FIG. 5 is a cross-sectional view as viewed from an arrow VV in FIG. 2.

A protective fence 1 is provided between a plurality of pillars 10 erected and fixed on a foundation A buried in the ground (only the center is shown in FIG. 1) using anchor bolts, and an upper portion of each pillar 10. The main chord member 20 is provided between the main string members 20 and the upper and lower sub-string members 30 provided between the columns 10 in the vertical direction.

The column 10 has a column main body 11 made of an extruded aluminum material having an elliptical cross section, and an aluminum casting cap 12 attached to the upper end of the column main body 11. Is provided with a slit 11A which is continuous in the up-down direction. A wooden lip 13 is housed and welded on the upper side of the hollow portion, and a bolt hole 13A is formed in the center of the wooden lip 13.

The cap 12 has a flat elliptical shape like the column main body 11, and the lower bulging portion 14 is
In the hollow part of A screw hole 14A is cut in the center of the bulging portion 14, and a bolt 15 is inserted from below into the bolt hole 13A of the wooden cap 13 and screwed into the screw hole 14A, thereby fixing the cap 12 to the column body 11. are doing.
Reference numeral 15A in FIG. 4 is a spring washer.

At both ends of the cap 12 in the major diameter direction, there are provided fitting portions 16 each having a bottomed round hole opening upward, and a screw hole penetrating downward at the bottom portion of the fitting portion 16. 1
6A is cut. The fitting portion 16 has a notch-shaped opening 17 having the same depth dimension and communicates with the fitting portion 16 in the horizontal direction.
These form the engaging portion 18 of the present invention.

The main chord member 20 includes a main chord main body 21 made of an extruded aluminum member having an elliptical cross section, and aluminum cast brackets 22 attached to both ends of the main chord main body 21. Two long holes 21 </ b> A are provided below both ends of the main body 21.

The bracket 22 includes an accommodating portion 23 accommodated in a hollow portion of the main chord member 20, a flange portion 24 facing an end of the main chord main body 21, and a projection 25 protruding from the flange portion 24. It is configured.

The accommodation portion 23 of the bracket 22 has a W-shaped cross section to reduce the weight, and has two screw holes 23A cut out on the lower surface side. That is, the main string material body 21
The bracket 22 is fixed to the main chord material body 21 by inserting screws 26 from below the respective long holes 21A and screwing them into the screw holes 23A.

The protruding portion 25 of the bracket 22 is composed of a columnar thick portion 27 and a thin portion 28 that connects the thick portion 27 and the flange portion 24. The thick portion 27 and the thin portion 28 are connected to each other. Fitting provided on cap 12 of column 10
The main chord material 20 is engaged with the engaging portion 18 of the support column 10 via the bracket 22 by fitting the concave and convex portions into the joint portion 16 and the opening portion 17 from above. A bolt hole 27A is formed in the thick portion 27 of the projection 25, and a bolt 2 such as a hexagonal hole is formed in the bolt hole 27A from above.
Insert the 9 by screwing into the screw hole 16A of the fitting portion 16, securing the ends of the bracket 22 In other words Shutsuru member 20 to the engaging portion 18.

On the other hand, the sub-string member 30 includes a sub-string member body 31 made of an extruded aluminum member having a circular cross section, and brackets 32 made of an aluminum casting attached to both ends of the sub-string member body 31. The string material main body 31 is provided with two continuous screw holes 31A in the longitudinal direction. Note that these screw holes 31A are used in a third embodiment described later.

The bracket 32 has a flange portion 33 which is in contact with an end of the sub chord material main body 31, a projecting piece portion 34 protruding from the flange portion 33 and housed in the slit 11 A of the support post 10, Housing portion 56 housed in material body 31
The protruding piece portion 34 is provided with a long hole 34A corresponding to the bolt hole 11C of the seating portion 11B provided on the column 10. Such a bracket 32 is fixed to the sub-chord material main body 31 with a screw 57 screwed from below the accommodating portion 56, and penetrates the bolt hole 11 </ b> C of the seating portion 11 </ b> B to project the projection 3.
The bolts 36 are inserted into the four long holes 34A, and are fixed to the column main body 11 by receiving nuts 37 screwed into the bolts. Here, a loosening prevention material may be applied to the screw 57 or the screw portion of the above-mentioned screw 26 as necessary.

In this embodiment, the column 12 is formed by previously bolting the cap 12 to the column main body 11, and the brackets 22 and 32 are connected to the main chord main body 21 and the sub chord main body 31 in advance. To form string members 20 and 30 respectively. Then, at the installation site, the precast base A is placed at a predetermined position, and the standing portion is erected so that the lower side of the column 10 is accommodated in the round hole B of the base A. The grout material C is poured into the round hole B. Prop 1
0 anchor bolts are buried and hardened.
The auxiliary string member 30 and the main string member 20 are respectively installed between them, and the protective fence 1 is installed.

According to this embodiment, the following effects can be obtained. In the protective fence 1, the protrusion 25 of the bracket 22 attached to the end of the main chord member 20 is fitted into the engaging portion 18 provided on the cap 12 of the support 10, so that the support 10
The main chord member 20 can be easily joined to the main string member.

The concave-convex fitting is performed from above with respect to the erection direction of the main chord material 20, and the projection 25 is locked to the engaging portion 18 along the erection direction.
The diameter of the thick portion 27 of the protruding portion 25 is made larger, and the dimensional difference between the thickness of the thin portion 28 and the thickness of the thin portion 28 is made larger. Is hard to come off.

The protruding portion 25 of the main chord material 20 has a thick portion 27
And the thin portion 28 are locked to the engaging portion 18, so that the structure of the projecting portion 25 and the engaging portion 18 can be simplified, and the fitting of the projecting portion 25 to the engaging portion 18 can be simplified. It can be easily performed simply by dropping it from above.

The main chord material 20 is attached to the bracket 22 with screws 26 inserted into the long holes 21 A, and the sub chord material 30
Is a bolt 36 inserted into a long hole 34A of the bracket 32.
The main chord main body 21 and the sub chord main body 31 expand and contract due to air temperature because they are fixed to the strut 10.
A, 34A.

The screws 26 for joining the main chord body 21 and the bracket 22 and the screws 57 for joining the sub chord body 31 and the bracket 32 are screwed from below, respectively. 57 can be hardly seen by pedestrians and the like, and the appearance of the protective fence 1 can be improved. Moreover, since the support main body 11, the cap 12, the main chord material main body 21, and the sub-chord material main body 31 constituting the protective fence 1 have an elliptical cross section or a circular cross section, the design of the protective fence 1 is based on a curved surface. It can be made good.

[Second Embodiment] FIG. 6 is a front view showing a protective fence 2 which is a fence according to a second embodiment of the present invention, and FIG.
FIG. 8 is an exploded front view showing a main part of the protective fence 2 in a partially broken state.
FIG. 8 is a plan view as viewed from the arrow VIII-VIII line in FIG. 7. Note that, in the present embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted or simplified.

The protective fence 2 is installed on a sloped road surface or the like, and the columns 10 are erected at high and low points of the slope, and the main chord material 20 and each substring are provided. The member 30 is installed diagonally along the slope. The main chord member 20 and the sub chord members 30 are also erected along the horizontal road surface on the column 10 standing upright. That is, in the protective fence 2, the cap 12
And the structure of the bracket 22 of the main chord material 20
It is significantly different from the first embodiment, and the differences will be described in detail below.

The cap 12 is composed of a first member 51 which is a collective member bolted to the support column main body 11 and a second member 5 which is another collective member disposed above the first member 51.
2 and the second member 52 has a bolt hole 52A.
And is fixed with a bolt 52B screwed into a screw hole 51A of the first member 51.

Each of the first and second members 51 and 52 has a semicircular fitting portion forming groove 5 at both ends in the major diameter direction.
3, and an opening forming groove 54 larger than the fitting part forming groove 53 is provided, and a pair of fitting parts 16 formed by aligning the upper and lower fitting part forming grooves 53 with the upper and lower opening parts. With the opening 17 formed by aligning the forming grooves 54, the engaging portion 18 of the present invention is provided.

The thick portion 27 forming the projection 25 of the bracket 22 is formed in a horizontal round bar shape, the thin portion 28 is formed in a disk shape concentric with the thick portion 27, and the thin portion 28 is formed.
And the flange portion 24 are continuous at the arm portion 55. That is, first, the thick portion 27 and the thin portion 28 are fitted into the fitting portion forming groove 53 and the opening portion forming groove 54 of the first member 51 from above, and then inserted into the second portion. The member 52 is attached, whereby the thick portion 27 is accommodated in the fitting portion 16 facing each other along the minor diameter direction, the thin portion 28 is accommodated in the opening 17, and the entire projection 25 is in the first position. It becomes covered with the second members 51 and 52.
In addition, such a bracket 22 is vertically rotated about the thick portion 27 as a rotation axis, so that the main chord material 20 including the bracket 22 can follow the sloped road surface of the slope. , Can be installed along a horizontal road surface.

Further, the sub-string member 30 in this embodiment is constructed along the sloped road surface and the horizontal road surface of the slope in the same manner as the main chord member 20 by using the bolt 36 for fixing the bracket 32 as a rotation axis. Have been.

According to the present embodiment, the above-described effects (1) to (3) can be obtained by the same configuration as in the first embodiment. Further, the following effects can be obtained by the specific configuration of the present embodiment. Each bracket 22, 32
Since the main chord member 20 and the sub chord member 30 are connected to the column 10 so as to be rotatable in the vertical direction, the main chord member 20 and the sub chord member 30 can be installed on both a sloped road surface such as a slope and a horizontal road surface.

Since the projection 25 of the bracket 22 is covered with the first and second members, the projection 25 can be made invisible,
The appearance of the protective fence 2 can be further improved, and the design can be further improved.

[Third Embodiment] FIG. 9 is a plan view showing a protective fence 3 which is a fence according to a third embodiment of the present invention.
Is an exploded front view showing a part of the protective fence 3 in a disassembled state.
FIG. 11 is a plan view showing a main part of the protective fence 3. In addition,
Also in the present embodiment, the same reference numerals are given to the same components as those in the above-described embodiments, and the description thereof will be omitted or simplified, and only the differences will be described below.

In the protective fence 3, the main string member 20 and the sub string member 3
The second embodiment differs from the second embodiment in that 0 is configured to rotate in the horizontal direction with respect to the support 10. Specifically, the fitting portions 16 are provided on the first member 51 and the second member 52 at both ends in the major diameter direction of the cap 12, and the first and second members 51 and 52 are combined to be vertically moved. They are formed to face each other. In addition, the first and second
The members 51 and 52 are provided with an opening forming groove 54 larger than the fitting portion 16, and the opening 17 is formed by combining the upper and lower opening forming grooves 54.

Then, the thick portion 27 and the thin portion 2 of the bracket 22 accommodated in the fitting portion 16 and the opening 17 are provided.
8 has the same overall shape as that of the second embodiment, but is provided in a plane circular shape so that the rotation axis is vertical, whereby the bracket 22, that is, the main chord material 20 is rotated in the horizontal direction. Has become. In FIG. 11, the illustration of the second member is omitted.

In the sub chord material 30, the protruding piece 34 of the bracket 32 is provided horizontally, and is inserted into a horizontally cutout 58 of the column body 11. Further, the protruding piece portion 34 is provided with a shaft member 59 protruding downward corresponding to the position of the slit 11 </ b> A of the column main body 11.
Of the bracket 3 is supported by a support member 61 disposed in the slit 11A and screwed.
The second chord member 30 is configured to rotate in the horizontal direction with the shaft member 59 as a rotation axis. Furthermore, the concave receiving portion 61A of the support member 61 that receives the shaft member 59 is provided with a dimension in the left-right direction (the depth direction of the slit 11A) in FIG. Thus, the expansion and contraction of the sub-string material body 31 is absorbed. In the bracket 32 of the present embodiment, the flange portion 33 is provided with two radially opposed screw holes 33A, and the screw holes 33A are inserted through these screw holes 33A.
It is fixed to the sub chord material main body 31 by screws 35 screwed into 1A (FIG. 5). That is, the bracket 32 here is not provided with the accommodating portion as in the first and second embodiments, and has a side T-shape.

According to the present embodiment, the following effects are obtained in place of the effects of the second embodiment. Each bracket 2
2,32, because they are joined rotatably in a horizontal direction with respect to the column 10, so as to correspond the main chords 20 and Fukutsuru member 30 in both curves and cranked road and straight road Can be erected.

The present invention is not limited to the above embodiment. For example, in each of the above embodiments, the main chord main body 21 is formed of an extruded aluminum material, but a chain 62 (only a part of which is illustrated) as shown in FIG. 12 may be used as the main chord main body. Good. In this case, as the bracket 22, an annular portion 63 may be provided instead of the housing portion 23 and the flange portion 24 (FIG. 2), and the material of the bracket 22 is a high-hardness material such as stainless steel. Is preferred. Note that such a chain 62 can also be used as a substring material main body.

Further, one of the two main chord members joined to the column may be formed by using a main chord main body made of extruded aluminum and the other may be formed by using a chain. It is not necessary to use the main string material body.

In each of the above embodiments, the sub chord material 30 is provided between the columns 10, but such a sub chord material can be omitted as appropriate.

Further, by combining the second embodiment and the third embodiment, one of the two chords connected to the column is configured to be rotatable in the vertical direction, and the other chord is May be configured to be rotatable in the horizontal direction.

In the second and third embodiments, the cap 12 is constituted by the upper and lower first and second members 51 and 52.
The bracket may be rotated using an integral unit as in the first embodiment. For example, the cap 1 in the first embodiment
2, by increasing the width of the opening 17 (opening width), the bolt 29 is loosened to
Can be rotated in the horizontal direction. Furthermore, if the projection 25 of the bracket 22 in the first embodiment is configured to be arranged in the horizontal direction with respect to the cap 12, the width of the opening 17 is increased, so that the bracket 22 is turned in the vertical direction. It can also be moved. Conversely, even when the bracket is not rotated, a cap composed of a plurality of collective members can be used.

In each of the above embodiments, the main string member 20 is composed of the main string member main body 21 and the bracket 22, and the bracket 22 is provided with the projection 25. However, the projection is formed at the end of the string member. The protrusion may be provided arbitrarily. For example, the protrusion may be provided directly on the chord material main body, for example, by processing an end of the chord material main body. The same is true for the strut, and the engagement portion 18
It is not necessary to provide the fitting portion on the column, for example, by providing the fitting portion by processing the upper part of the column main body.

Further, the engaging portion according to the present invention is not limited to the one formed by the fitting portion 16 and the opening 17 as in each embodiment. It does not need to be formed from the thin portion 28, and the shape of the engaging portion, the protrusion, and the like may be appropriately determined in the implementation.

[0049]

As described above, according to the present invention,
Since the protrusions provided at the ends of the chords are fitted into the engaging portions of the struts in an uneven manner, the chords can be easily joined to the struts. In addition, the concave and convex fitting is performed from a direction that is at an angle with respect to the erection direction of the chord material, and thereby the protrusion is locked to the engaging portion along the erection direction, so that it is attached to the support column as in the conventional case. It is not necessary to provide the above-mentioned insertion hole, and the engagement portion of the projection to the support can be made larger to obtain a good joining state, and the chord can be hardly detached from the support.

[Brief description of the drawings]

FIG. 1 is a front view showing a fence according to a first embodiment of the present invention.

FIG. 2 is a partially cutaway front view showing a main part of the first embodiment in an enlarged manner.

FIG. 3 is a plan view as viewed from an arrow III-III in FIG. 2;

FIG. 4 is an exploded perspective view showing a main part of the first embodiment.

FIG. 5 is a cross-sectional view as viewed from arrow VV in FIG. 2;

FIG. 6 is a front view showing a fence according to a second embodiment of the present invention.

FIG. 7 is an exploded front view showing a main part of the second embodiment in an exploded manner.

FIG. 8 is a plan view as seen from the arrow VIII-VIII line in FIG. 7;

FIG. 9 is a plan view showing a fence according to a third embodiment of the present invention.

FIG. 10 is an exploded front view showing an essential part of the third embodiment in an exploded manner.

FIG. 11 is a plan view showing a main part of a third embodiment.

FIG. 12 is a front view showing a modification of the present invention.

[Explanation of symbols]

1, 2, 3 ... fence, which is a fence, 10 ... prop, 16 ... fitting part, 17 ... opening, 18 ... engaging part, 20 ... chord, 25 ...
Projecting portions, 27: thick portion, 28: thin portion, 51, 52: first and second members that are collective members.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E01F 15/00 102 E04H 17/14 102

Claims (3)

(57) [Claims] The present invention comprises at least two columns which are erected at an interval from each other, and a chord which is erected between the columns, and protrudes from the end of the chord toward the column. A protrusion is provided, and the protrusion is provided with a thick portion provided on the distal end side thereof.
A thin portion provided at least on the base end side of the thick portion.
The strut is configured to fit the protrusion of the chord material with the protrusion and recess, and the protrusion is
Engaging portion is provided for locking the erection direction of chord, this engagement
The part includes a fitting part in which the thick part of the protrusion is concavely fitted, and a front part.
It is constituted by an opening whose serial thin portion is inserted, each of the fitting portion and the opening, upward or vertical
Open to both, the thick part and the thin part
From above and below so as to make an angle with the erection direction
A fence that can be fitted with irregularities . 2. The fence according to claim 1, wherein the projection of the chord material is rotatable with respect to an engaging portion of the support. 3. The fence according to claim 1, wherein the engaging portion of the column is formed by a plurality of collective members combined with each other, and the protrusion of the chord is covered with the collective members. The fence that has been broken.