JP3818419B2 - Guard support beam support structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a beam support structure for a protective fence installed at a pedestrian road boundary or the like, and more particularly to a structure for fixing a cover material to a joint portion that is firmly fixed and beautiful on the landscape.
[0002]
[Prior art]
Conventionally, as described in Japanese Utility Model Publication No. 5-2655 or Utility Model Registration No. 2593202 as a beam joint structure of a protective fence, the protective fence is provided via a support metal fitting or a flat slit tubular metal fitting. There is a disclosure in which the column and the tube (beam) are fixed with bolts, but in either case, the fixing bolt head is exposed, which is dangerous for pedestrians and not good for the scenery In order to solve these problems, the present applicant, as shown in Japanese Patent Application Laid-Open No. 9-228333, fixed the beam from the front to the mounting bracket attached to the side wall of the guard fence, and then attached the mounting bracket to the mounting bracket. The structure of the protective fence column and beam for attaching the cover was proposed.
[0003]
However, as a consideration for the beam joint structure of the protective fence, in Japanese Patent Laid-Open No. 7-259038, a bracket made of metal (generally made of cast metal) or synthetic resin does not make the head of the tightening bolt stand out. A protective fence joint that is fixed has been proposed.
[0004]
However, since the cover shown in Japanese Patent Laid-Open No. 9-228333 is fitted and covered with a mounting bracket, there is a problem that the cover may come off due to contact with the vehicle, and the bracket shown in Japanese Patent Laid-Open No. 7-259038 Is made of metal (generally cast) or synthetic resin, so if it is damaged due to contact with the vehicle, it will cause problems such as disconnection of the support fence post and beam, or spattering of fragments to cause secondary disasters. ing.
[0005]
[Problems to be solved by the invention]
Therefore, in the beam support structure of the guard fence, the fixing structure of the cover material to the beam support tool considering the scenery is firmly attached and does not easily come off. In addition to safety considerations for pedestrians who do not expose the bolt heads, they provide a beam support structure for protective fences that is also positively considered for vehicles. .
[0006]
[Means for Solving the Problems]
That is, the beam support structure of the protection fence according to the present invention is a beam in which a beam made of a long tubular body is erected between columns, and the beam is fixed to the column and clamped and fixed from above and below by the upper and lower clamping portions. A support member, a cover material that can be covered on the upper portion of the beam support member, and the beam support member and the cover material are passed through and fastened with a nut to fix the cover material to the beam support member and simultaneously beam the beam. A fixing bolt for fixing to the support is provided.
[0007]
Further, the beam support structure of the protection fence according to the present invention is a protection fence in which a beam made of a long tubular body is erected between columns, and is covered with a beam support that is fixed to the column and supports the beam, and from above. It consists of a cover material and a fixing bolt that fixes the beam at the same time as fixing the cover material, and a non-circular locking hole larger than the bolt diameter of the fixing bolt is formed on the upper surface of either the cover material or the beam support. The locking hole has a shape corresponding to a non-circular cross-section bolt locking portion provided at the neck of the fixing bolt, and the bolt locking portion of the fixing bolt is used to lock the cover material or the beam support. is non-rotatably inserted into the hole, the fixing bolt is tightened and fixed by a nut through a beam support and the cover member, further further synthetic resin decorative cover is covered from said cover member upper It is those that are secured by a fixing bolt.
[0008]
The beam support structure of the guard fence according to the present invention is such that a reflector is attached to the cover material or the decorative cover.
[0009]
Furthermore, the beam support structure of the protection fence according to the present invention is a protection fence in which a beam made of a long tubular body is installed between support columns, and a beam support tool fixed to the support column to support the beam and covered from above. A non-circular locking hole larger than the bolt diameter of the fixing bolt on the upper surface of either the cover material or the beam support. And the locking hole has a shape corresponding to a non-circular cross-section bolt locking portion provided in the neck of the fixing bolt, and the bolt locking portion of the fixing bolt is engaged with the cover material or the beam support. The fixing bolt is passed through the stop hole in a non-rotatable manner, the fixing bolt penetrates the beam support and the cover material, and is fastened and fixed by a nut, and a reflector is attached to the head of the fixing bolt. It is an feature.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the beam support structure of the guard fence of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows a guard fence constructed by laying beams 2 on a plurality of support columns 1 standing at appropriate intervals. In the example of this embodiment, two types of beam supports 3A as shown in FIG. 3B is used, and the beam support 3A is connected to the beam adjacent to each other via a connection fitting 21 inserted and fixed to the beam ends of the beams 2 and 2 (this embodiment). In this case, a total of three stages at a height of 150 mm above and below the center height of 600 mm are fixed to the side wall of the support column 1, and the beam support 3 </ b> B supports the long beam 2 at its intermediate portion. At the same time, it is fixed to the side wall of the column 1.
In this embodiment, the protective fence is made of 114.3 mmφ steel pipe (thickness 4.5 mm) on the column 1 and 48.6 mmφ steel pipe (thickness 2.4 mm or 3.2 mm) as a beam. All of them are made of materials, each of which has a weather-resistant finish on the anticorrosive substrate treatment, and the beam support is a galvanized steel sheet press-formed product (thickness 3.2 mm) with a weather-resistant finish. It has been.
[0011]
In this embodiment, the beam support 3A is described as being supported at the connecting portion of adjacent beams, and the beam support 3B is supported at the middle portion of the long beam. Even if it is constituted by only one kind of beam support, the present invention is similarly applied.
[0012]
In FIG. 2 showing the first embodiment of the present invention, a clamping portion 33 is provided on the upper and lower sides of the beam outer shape to clamp and fix the beam from the upper and lower sides, or a support portion 34 corresponding to the outer shape of the beam. The beam support 3B for supporting the beam from the lower side by means of the fixing part 32 opened in the fixing part 31 formed integrally from the clamping part 33 and the support part 34, respectively, is fixed to the column 1 by the mounting bolt 50. A cover material 4 which is shared by these beam supports 3A and 3B and is covered from the upper part is attached by fitting a pair of left and right side end portions 42 and 43 to both ends in the width direction of the beam supports 3A and 3B. The upper surface portion 41 of the cover member 4 is provided with a locking hole 40 correspondingly so that a non-circular cross-section bolt locking portion 52 provided at the neck of the fixing bolt 5 is fitted. Insertion The fixed bolt 5 passes through the connecting holes 20 and 30 provided in the beam support 3 (and the beam 2 and the connection fitting 21), and is fastened and fixed by a nut. The cover material 4 is fixed simultaneously with fixing to the beam support 3.
In this embodiment, the cover material 4 is made of a press-formed product made of a galvanized steel plate (thickness: 1.6 mm) with a weather-resistant paint finish. Resin injection molded products are applied.
[0013]
In the present embodiment example, a pair of side end portions 42 and 43 of the cover material 4 covers a gap generated between the support column 1 and the beam 2, and a connection portion between the support column and the beam having an excellent appearance is configured. As shown in FIG. 2 (b), when the concave portion 44 in which the bolt head 51 of the fixing bolt 5 is received is formed around the locking hole 40 of the cover member 4, the bolt head does not protrude and a person can It is safe because it does not get caught when touched, and the bolt head 51 is not exposed at all in appearance. Furthermore, since the cover material 4 is firmly fixed by the fixing bolt 5, it does not come off easily, and when the material of the cover material 4 is manufactured by press molding using a steel plate, it should be possible to contact the vehicle. Even if an accident occurs, the cover material itself is broken, cracked and scattered, and it is safe without causing a secondary disaster such as a motorcycle riding on it and falling.
[0014]
The cover member 4 is externally fitted non-rotatably with the locking hole 40 as an axis by a pair of left and right side end portions 42 and 43 straddling both ends in the width direction of the beam supports 3A and 3B. The locking hole 40 of the upper surface portion 41 is formed into a corresponding shape so that the non-circular cross-section bolt locking portion 52 provided in the neck portion of the fixing bolt 5 is fitted, and the fixing bolt 5 is inserted non-rotatably. For this reason, when assembling the beam support structure of the present invention, the fixing bolt 5 is tightened and fixed by simply tightening the nut from the bottom without pressing the head of the fixing bolt 5 with a tool such as a screwdriver or spanner. Yes.
[0015]
Next, a second embodiment of the present invention will be described with reference to FIGS.
FIG. 3 is an exploded perspective view showing the member configuration of the second embodiment of the present invention,
FIG. 4 shows the assembled state of the second embodiment. (A-1) and (a-2) show the case where the beam support 3A is used, and (b-1) and (b-2) show the beam support. Representing each front view and side view when using 3B,
FIG. 5 is a cross-sectional view showing the assembly configuration of the main part of the AA part of FIG.
[0016]
In the second embodiment of the present invention, a synthetic resin decorative cover 6 is further covered from the upper part of the cover material 4 described above and is fixed by a fixing bolt 5. When the decorative cover 6 provided with the connecting hole 60 coaxially with the connecting hole 30 of 3A and 3B and the locking hole 40 of the cover material 4 fixes the cover material 4 to the beam supports 3A and 3B. The structure is fixed at the same time.
[0017]
Further, in the second embodiment of the present invention, the reflectors 7 are attached to the left and right side surfaces of the decorative cover 6 to enhance the night visibility of the protective fence.
The reflector 7 is used by being fitted into a recess 61 (groove shape in this example) formed on the left and right side surfaces of the decorative cover 6, etc., and is made of a large number of transparent plastics such as polycarbonate and acrylic on the front surface of the substrate via an air layer. A prism type reflector produced by arranging a lens body having triangular pyramidal projections or a base 71 made of ABS or rubber on the base as shown in FIG. A mirror-processed retroreflective glass bead reflector 72 having a large number of semi-embedded reflectors is preferred because it has better reflective performance and durability than conventional reflective tapes.
In this embodiment, the groove-shaped recess 61 is a headlamp for a vehicle or the like that reaches at an angle of 5 to 15 degrees from the beam direction of the protective fence as shown in FIG. 3 in order to enhance the reflection effect. Is disposed so as to face the incident light X.
[0018]
Furthermore, in the present embodiment, as shown in FIG. 5, the space between the bolt head 51 and the bolt locking portion 52 of the fixing bolt 5 is smaller than the bolt head and larger than the cross-sectional area of the bolt locking portion. A bolt neck lower stepped portion 53 having a cross-sectional area is formed, and the decorative cover 6 is configured such that the connecting hole peripheral portion 62 of the decorative cover 6 enters the gap portion between the bolt head and the upper surface portion 41 of the cover material 4. Is locked.
Here, the dimension h2 of the connecting hole peripheral edge 62 of the decorative cover 6 is the same or slightly smaller than the dimension h1 of the gap formed between the bolt head 51 and the upper surface 41 of the cover material 4. The force when the fixing bolt 5 is strongly tightened and fixed is transmitted to the peripheral edge of the engaging hole 40 of the cover member 4 made of steel plate as shown by the thick arrow in the figure, and to the peripheral edge 62 of the connecting hole of the decorative cover 6. Therefore, the adherend can be fixed without applying any force to the decorative cover 6 that is the adherend. Accordingly, the beam support structure of the protective fence is configured without applying stress (force) such as vibration received during assembly of the protective fence or after installation to the resin decorative cover. Breakage such as cracking of the decorative cover can be avoided.
[0019]
In the above-described embodiment of the present invention, the non-circular locking hole provided in the upper surface of either the cover material or the beam support, and the non-circular cross section of the bolt locking portion provided in the neck of the fixing bolt Although each of the above has been described as an example of a square, the shape is not limited as long as the fixing bolt can be inserted non-rotatably in a state where the bolt locking portion is fitted into the locking hole, The cross-sectional shapes of the locking holes and the bolt locking portions of the fixing bolts are not necessarily the same.
[0020]
Hereinafter, other embodiments of the present invention will be described.
FIGS. 6 and 7 show a third embodiment of the present invention. FIG. 6 is an exploded perspective view showing a member configuration, FIG. 7 shows an assembled state (a): a perspective view, and (b): an attachment fixing portion thereof. Each of the cross-sectional views is shown.
FIG. 8 shows another example of the decorative cover of the third embodiment of the present invention, and FIG. 9 shows another embodiment of the fixing bolt of the first embodiment shown in FIG. Each example is shown.
[0021]
In the third embodiment of the present invention, the two beams 2 and 2 are connected by the fixing bolts 5 and 5 through the beam support 3 attached to the support column 1, and the decorative cover 6 is also connected by these fixing bolts. It represents a configuration that is fixed at the same time.
Here, as in the case of the second embodiment of the present invention described above, the decorative cover 6 has a bolt between the bolt head 51 and the bolt locking portion 52 of the fixing bolt 5 as shown in FIG. A bolt neck lower step 53 having a smaller diameter than the head and a cross-sectional area larger than that of the bolt locking portion is formed, and the decorative cover 6 is formed in a gap portion between the bolt head 51 and the upper surface portion of the beam support 3. The decorative cover 6 is locked so that the connecting hole peripheral edge portion 62 enters. Further, in the third embodiment of the present invention, the connecting hole opened on the upper surface of the beam support 3 is a non-circular locking hole 35, as described in detail in the case of the second embodiment. When the fixing bolt 5 is tightened and fixed, the force does not reach the connecting hole peripheral portion 62 of the decorative cover 6 but is applied to the peripheral portion of the locking hole 35 of the beam support 3, and the decorative cover 6 as the adherend is protected by the protective fence. Without receiving any load from stress (force) such as vibration received during assembly or after installation, damage such as cracking of the resin decorative cover due to stress (force) load can be avoided.
[0022]
In the third embodiment of the present invention, as shown in FIG. 7B, the nut fixing portion 54 is stored in the mounting hole 63 below the decorative cover 6 as well as the bolt head 51 of the fixing bolt 5. In addition, since the bolt head 51 and the nut fixing portion 54 of the fixing bolt 5 are not exposed from above and below the decorative cover 6, even if a person comes in contact, it is safe and there is no protrusion in the appearance, and it has a beautiful fit. .
[0023]
FIG. 8 shows a development example of the third embodiment of the present invention in which a protrusion 64 for reflector base is formed on a part of the decorative cover 6 and the reflector 7 is attached thereto. As described above, the decorative cover 6 ′ to which the reflector is attached is configured so as not to receive any stress (force) such as vibration received during assembly of the protective fence or after installation, and the stress (force) of the reflector itself is not affected. ), And there is no worry of breakage due to cracks, etc., and there is no need to bother to attach a reflector to the protective fence, so it is excellent in workability, and the reflector is built into the basic components of the protective fence and is redundant It has a beautiful appearance with no mounting parts or the like, and is functionally safe with improved visibility at night.
[0024]
Next, FIG. 9 shows an application example of the fixing bolt of the first embodiment shown in FIG. 2 in which a reflector 7 is attached to the head of the fixing bolt 5. Is installed in the locking hole 40 formed in the cover material 4 and has the advantage that the workability at the time of fixing the bolt is good as described above, and the orientation of the reflector 7 is fixed according to a predetermined setting. A fixed angle adjustment effort is not required, and installation is done in a uniform and quick manner without requiring skill in installation, and the installation is made to oppose the incident light from a headlight or the like, thereby ensuring good visibility at night.
[0025]
【The invention's effect】
As described above in detail, the beam support structure of the guard fence according to the present invention is a guard fence in which a beam made of a long tubular body is installed between struts. A beam support that is clamped and fixed, a cover material that is covered by the upper portion of the beam support, and the beam support and the cover material that pass through and are fastened and fixed by nuts to fix the cover material to the beam support and At the same time, a fixing bolt for fixing the beam to the beam support is provided, and on the upper surface of either the cover material or the beam support, a non-circular shape larger than the dimension of the bolt diameter of the fixing bolt is provided. A locking hole having a shape is provided, and the locking hole has a shape corresponding to a bolt locking portion having a non-circular cross section provided in the neck portion of the fixing bolt. Stop portion is rotatably inserted into the locking hole of the cover member or beam support, lever fixing bolt is tightened secured by a nut through a beam support and the cover member, the bolt head or a fixing for fixing It is safe for pedestrians without exposing the nuts and the scenery is excellent, and the cover is attached at the same time as fixing the beam, so the attachment is strong and does not come off easily A cover material is attached, and there is no danger of being damaged and scattered by contact with an emergency vehicle and causing a secondary disaster.
[0026]
Also, lever which is bolt engaging portion of the fixing bolt is inserted non-rotatably in the locking hole of the cover member or beam support and made assembly construction, the fixing bolts are rotated in the fixing bolt when tightening fixing by a nut Without tightening, the fixing bolt 5 is tightened and fixed simply by tightening the nut without pressing the head of the fixing bolt 5 with a tool such as a screwdriver or a spanner.
[0027]
In addition, when a synthetic resin decorative cover is covered from the top of the cover material and fixed with fixing bolts, the shape can be freely made using the characteristics of the synthetic resin to add functions and various finishes. In addition, the cost of the member itself can be reduced, and when a reflector is attached to the decorative cover as an additional function, it is easy to design it so as to face the direction of incident light from a headlight or the like accurately. Since the high reflectance is obtained, the nighttime visibility of the protective fence is improved.
[0028]
Furthermore, even when a reflector is attached to the head of the fixing bolt, in the beam support structure of the guard fence of the present invention, the assembly work is performed without rotating the fixing bolt. In addition to the advantages of high reliability, the orientation of the reflector is fixed according to the specified setting, and there is no need to adjust the angle for fixing the installation. It is possible to secure the excellent visibility with high reflectivity at night by installing it facing exactly.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a front view and a side view of a protective fence for explaining an embodiment of the present invention.
2A is a perspective view and FIG. 2B is a side sectional view showing a first embodiment of the present invention.
FIG. 3 is an exploded perspective view showing a member configuration representing a second embodiment of the present invention.
FIG. 4 is a front view and a side view showing a second embodiment of the present invention.
FIG. 5 is a cross-sectional view showing an assembling configuration of main parts for explaining a second embodiment of the present invention.
FIG. 6 is a perspective view showing an exploded configuration of the third embodiment of the present invention.
7A is an external perspective view, and FIG. 7B is a side sectional view showing an assembled configuration state of the third embodiment of the present invention.
8A is a perspective view of an external appearance, and FIG. 8B is a side sectional view showing another embodiment according to the third embodiment of the present invention.
9A is a perspective view of an external appearance, and FIG. 9B is a side sectional view showing another embodiment according to the second embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Support | pillar 2 Beam 20 Connecting hole 21 Connection metal fitting 3 Beam support tool 3A Beam support tool 3A
3B Beam support 3B
30 connection hole 31 fixing part 32 fixing hole 33 clamping part 34 support part 35 locking hole 4 cover material 40 locking hole 41 upper surface part 42 side end part 43 side end part 44 recessed part 5 fixing bolt 51 bolt head 52 bolt locking Numeral 53 Bolt neck lower step 6 Cosmetic cover 60 Connection hole 61 Recess 62 Connection hole peripheral part 7 Reflector 71 Base 72 Glass bead reflector X Incident light

Claims (4)

In a protective fence in which a beam consisting of a long tubular body is installed between columns, a beam support that is fixed to the column and clamps and fixes the beam from above and below by the upper and lower clamping parts, and an upper part of the beam support. And a fixing bolt that passes through the beam support and the cover material and is fastened and fixed by a nut to fix the cover material to the beam support and simultaneously fix the beam to the beam support. The beam support structure of the protective fence characterized by In a guard fence in which a beam consisting of a long tubular body is installed between columns, a beam support that is fixed to the column and supports the beam, a cover material that can be covered from the upper part, and a beam that is simultaneously fixed to the cover material A non-circular locking hole larger than the bolt diameter of the fixing bolt is provided on the upper surface of either the cover material or the beam support, and the locking hole is a fixing bolt. The bolt locking portion of the non-circular cross section provided on the neck of the fixing bolt is inserted into the locking hole of the cover material or the beam supporter so as not to rotate, and the fixing bolt is The beam support and cover material are passed through and fastened with nuts, and a synthetic resin decorative cover is further covered from the top of the cover material and fixed with fixing bolts. Beam support structure for safety barrier characterized by.   The beam support structure for a protective fence according to claim 1 or 2, wherein a reflector is attached to the cover material or the decorative cover. In a guard fence in which a beam consisting of a long tubular body is installed between columns, a beam support that is fixed to the column and supports the beam, a cover material that can be covered from the upper part, and a beam that is simultaneously fixed to the cover material A non-circular locking hole larger than the bolt diameter of the fixing bolt is provided on the upper surface of either the cover material or the beam support, and the locking hole is a fixing bolt. The bolt locking portion of the non-circular cross section provided on the neck of the fixing bolt is inserted into the locking hole of the cover material or the beam supporter so as not to rotate, and the fixing bolt is A beam support structure for a protective fence, wherein the beam support and the cover material are passed through and fastened and fixed by a nut, and a reflector is attached to the head of the fixing bolt.

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