JP5980610B2 - Fittings for wooden guard fence - Google Patents

Description

  The present invention relates to a joint for a wooden protective fence arranged along a roadway, a sidewalk, a park, a promenade, a bridge, and the like, and more particularly, to a joint for a wooden protective fence that can cope with slopes and corners.

  2. Description of the Related Art Conventionally, protective fences called guard rails are arranged along roads and the like to prevent vehicles and pedestrians from falling and preventing traffic accidents. There are various types of protective fences, but for the purpose of improving the landscape and reducing the environmental burden, installation of wooden protective fences consisting of wooden columns and beams (horizontal bars) is increasing. Specifically, there is a protective fence in which a plurality of wooden beams are erected between upper and lower wooden columns arranged in parallel at predetermined intervals. In this case, the support column and the beam are connected to each other through a joint.

  As such a wooden guard fence, for example, the following Patent Document 1 is disclosed. The wooden guard fence of Patent Document 1 is a horizontal bridge that continuously joins a wooden beam of a length determined according to the unit span of the pillars inside the ground part of a plurality of pillars erected along the road side of the road. It consists of Then, centering on the position where the wooden beams are joined, the length of 9-27% of the length of the wooden beams is set as the specified value, and a joint plate having a larger length and an expansion force of 2 tons or more in the horizontal direction is used. It is arranged. Then, the joint plate and the wooden beam are connected to each other through a mounting hole opened in the wooden beam corresponding to the specified value of the joint plate, and these are fixed to the support column.

  Further, although not for wooden guard fences, Patent Document 2 is disclosed as a guard fence joint capable of adjusting the beam connection angle up and down and left and right according to slopes and corners. In Patent Document 2, an engaging portion is inserted into an insertion hole of a support column to lock the mounting bracket to the support column, and the mounting bracket is fixed to the support column with a bolt inserted into the bolt hole and screwed into the female screw hole. Next, the upper half cylindrical body and the lower half cylindrical body are clamped by the upper half cylinder and the lower half cylindrical body from above and below, and the bolt is inserted into the bolt hole and screwed into the female screw. To fix. Next, the hemispherical concave portion of the lower semi-cylindrical body is fitted to the hemispherical convex portion of the mounting bracket fixed to the support column, and the mounting bracket and upper half-cylinder are inserted by bolts inserted through the bolt holes and screwed into the female screws. The body and the lower half cylinder are fixed. According to this, the beam angle can be easily changed by the sliding contact fitting action between the hemispherical convex portion and the hemispherical concave portion.

Japanese Patent Laid-Open No. 2004-27825 JP-A-9-13749

  In patent document 1, since it is only connected via the joint plate which consists of a single board, the connection angle of the beam with respect to a support | pillar cannot be adjusted freely. This makes it impossible to accurately install a protective fence on slopes and corners.

  On the other hand, in Patent Document 2, the beam connection angle with respect to the column can be freely adjusted up and down and left and right, so that a protective fence can be accurately installed according to the slope and corner. However, in patent document 2, the attachment metal fitting is only fixed to the support | pillar with the volt | bolt. In this case, even if it is a metal protective fence, the weather resistance is high to some extent, so there are few problems. Since it is more likely to deteriorate, there is a risk that the mounting bracket will fall off the support. In addition, the joint of Patent Document 2 has a complicated structure in which a hemispherical convex portion is formed on the mounting bracket and a hemispherical concave portion is formed on the lower half cylindrical body so that the joint can be changed vertically and horizontally. This increases production costs and yields.

  Therefore, the present invention solves the above-mentioned problem, and the connection angle of the beam to the support column can be adjusted up and down and left and right with a simple configuration, and even if the wood decays, it does not easily fall off. The purpose is to provide joints for protective fences.

  As a means for that purpose, the present invention is a joint for a wooden guard fence in which a wooden beam is installed between a plurality of wooden columns erected at a predetermined interval, and is penetrated into the column. Rotation centered on a cutting bolt inserted into the shaft hole, two cap screws screwed into both ends of the cutting bolt and having a blade plate portion at the head, and a shaft rod inserted through the blade plate portion. And two connecting plates that are rotatably connected to the cap screw and are inserted and fixed to slits formed at both ends of the beam.

  According to this, since the cutting bolt which is the basic shaft of the joint is inserted through the support column in a penetrating manner, even if the wooden support column deteriorates due to decay or the like, it is possible to avoid the joint from falling off easily. . In addition, a connecting plate that is rotatably connected to a bag screw with a feather plate screwed to a cutting bolt is fixed to the beam. Thereby, the connection angle of the beam with respect to a support | pillar can be freely adjusted by changing the angle of the connection plate with respect to a cap screw. At this time, by changing the rotational phase of the cap screw with respect to the cutting bolt, the angle adjustment direction of the connecting plate and the beam can be freely changed vertically or horizontally. Moreover, the angle adjustment directions of the connecting plates can be made different from each other by making the rotational phases of the two cap screws different from each other. Further, since the basic configuration is a simple configuration constituted by a cutting bolt, a bag screw with a feather plate, and a connecting plate, it is advantageous for cost reduction.

  Of the two connecting plates, one is a flat plate made of a single plate, and the other is a connecting part connected to the battledore part and a plate part continuous to the tip of the connecting part. And the plane direction of the connecting portion and the plane direction of the plate portion may intersect in a cross shape. According to this, it becomes easy to independently adjust the connection angle of each beam in complex terrain where ground undulations and corners are mixed, and it becomes easy to accurately install a protective fence even in complex terrain.

  According to the joint for a wooden guard fence of the present invention, the connection angle of the beam to the support column can be adjusted up and down and left and right with a simple configuration, and even if the wood deteriorates due to decay or the like, it does not easily fall off.

It is a perspective view of a joint. It is a disassembled perspective view of a coupling. It is a front view of the joint periphery which connected the protective fence to the flat surface linearly. It is a top view of the joint periphery which connected the protective fence to the flat surface linearly. It is a top view of the joint periphery which bent and connected the protection fence to the flat surface. It is a front view of the joint periphery which connected the protection fence to the slope linearly. It is a perspective view of the joint periphery which bent and connected the protection fence to the slope.

  Hereinafter, representative embodiments of the present invention will be described with reference to the drawings as appropriate. Applicable protective fences are installed along roadways, sidewalks, parks, promenades, bridges, etc. to prevent the fall of vehicles and pedestrians and traffic accidents, etc. A plurality of beams made of wood as horizontal bars are installed between a plurality of columns made of wood, and each column and each beam are connected via the joint of the present embodiment.

  In addition, as shown in FIG. 1, the joint according to the present embodiment includes a dimensioning bolt 10 serving as a basic shaft, two cap screws 11 that are respectively screwed into both axial ends of the dimensioning bolt 10, It has two connection plates 12 and 13 that are rotatably connected to the cap screw 11. All the members constituting the joint of the present embodiment including the cut bolt 10, the cap screw 11, and the connecting plates 12 and 13 are made of metal such as iron (including alloy).

  As shown in FIG. 2, the cutting bolt 10 is slightly shorter than the diameter of the support column 20 and has a diameter that can be inserted into a shaft hole 21 that is formed in a penetrating manner in the radial direction of the support column 20. The cap screw 11 has a length that covers both ends of the cutting bolt 10 and is screwed around the cutting bolt 10 as a central axis so as to be rotatable. Moreover, the head of the cap screw 11 has a plate-shaped battledore part 11a continuously. The cap screw 11 is set to such a length that at least the feather plate 11a is positioned outside the support column 20 even when it is screwed to both ends of the cutting bolt 10 to the innermost part (FIG. 3). Etc.).

  A connecting hole 11 b for connecting to the connecting plates 12 and 13 is formed in the battledore part 11 a of the cap screw 11. On the other hand, connection holes 12a and 13a for connecting to the cap screws 11 are also formed at one end in the longitudinal direction of the connection plates 12 and 13, respectively. Then, the connecting hole 11b of the cap screw 11 and the connecting hole 12a of the connecting plate 12, and the connecting hole 11b of the cap screw 11 and the connecting hole 13a of the connecting plate 13 are overlapped, and the connecting holes 11b, 12a / 11b, 13a are overlapped. The cap screw 11 and the connection plates 12 and 13 are connected to each other through the inserted connection bolt 14. The connecting bolt 14 is fixed by a cap nut 16 via a spring washer 15. In addition, the length dimension of the connection bolt 14 is larger than the total thickness dimension of the battledore part 11a and the connection plates 12 and 13. Thereby, the connection plates 12 and 13 are rotatable around the connection bolt 14 as a rotation center. That is, the connecting bolt 14 corresponds to the shaft rod of the present invention.

  In this embodiment, two types of connecting plates 12 and 13 having different shapes are used. One connecting plate 12 is a flat plate made of a single plate, and has a thickness dimension that can be inserted into a thin groove-like slit 23 formed at the axial end of each beam 22. The connecting plate 12 is provided with a fixing hole 12b for inserting a fixing bolt 24 for firmly fixing the connecting plate 12 to the beam 22. In the present embodiment, the fixing holes 12b are provided at two locations.

  On the other hand, the other connecting plate 13 has a connecting portion 13b connected to the feather plate portion 11a of the cap screw 11 via the connecting bolt 14, and a plate portion 13c continuous to the tip of the connecting portion 13b. In addition, the phase between the planar direction of the connecting portion 13b and the planar direction of the plate portion 13c is shifted by 90 degrees, and the planar directions intersect each other in a cross shape when viewed in the longitudinal direction. The connecting hole 13a is formed in the connecting portion 13b. The shape of the plate portion 13c is substantially the same as that of the connecting plate 12, and has a thickness dimension that can be inserted into the slit 23 of each beam 22, and has two fixing holes 13d for inserting the fixing bolts 24. Reference numeral 25 denotes a washer.

  Next, a procedure for connecting the support column 20 and the beam 22 using the joint of the present embodiment will be described with reference to FIG. First, the cutting bolt 10 is passed through the shaft hole 21 of the beam 22. Next, the cap screws 11 are screwed into the both ends of the cutting bolt 10 respectively. At this time, it is not necessary to strictly adjust the screwing amount of the cap screw 11. Subsequently, the connection bolts 14 are inserted into the connection holes 11b and 12a and the connection holes 11b and 13a and fixed with the cap nuts 16 so that the connection plates 12 and 13 are connected to the cap screws 11 in a freely rotatable manner. To do. Then, the connecting plate 12 and the plate portion 13 c of the connecting plate 13 are respectively inserted into the slits 23 of the beam 22, and the connecting plates 12 and 13 are securely fixed to the beam 22 by the fixing bolt 24 and the cap nut 16. In addition, the connection distance of the support | pillar 20 and the beam 22 is adjustable by adjusting the screwing amount of the cap screw 11 with the beam 22 as needed.

  When the protective fence is installed in a straight line on the flat ground, the above procedure is completed. Thereby, as shown in FIGS. 3 and 4, the beam 22 is connected to the support column 20 via the joint. However, protective measures may be installed on rough ground (inclined surfaces) or corners. In this case, the protective fence cannot be installed accurately only by the above procedure. Therefore, in order to accurately install the beam 22 according to the inclined surface or corner, in addition to the above procedure, the connection angle of the connection plates 12 and 13 with respect to the cap screw 11 may be adjusted.

  For example, when it is desired to install the guard fence along a corner in a bent state (curved as a whole), as shown in FIG. By rotating in the direction, the connection angle can be adjusted. At this time, the circumferential angle of the cap screw 11 is adjusted to keep the connecting bolt 14 in the vertical direction.

  When the protective fence is installed on the inclined surface, as shown in FIG. 6, the circumferential angle of the cap screw 11 is adjusted so that the connection bolt 14 is horizontal, and the connection plates 12 and 13 together with the beam 22. Is rotated in the vertical direction around the connecting bolt 14 so that the connecting angle can be adjusted.

  Furthermore, even when installing on a complicated terrain, such as when bending a protective fence on an undulating ground, as shown in FIG. 7, one side is adjusted in the horizontal direction and the other is adjusted in the vertical direction. In addition, the connection angle can be adjusted independently and in different directions.

(Modification)
As mentioned above, although typical embodiment of this invention was described, this invention is not limited to this, A various change is possible in the range which does not deviate from the summary of this invention. For example, the two connecting plates can both have the same shape. Both of them can be shaped like the connecting plate 13, but in terms of cost, it is preferable that both of them are shaped like the connecting plate 12 made of a single plate. Further, the fixing holes 12b and 13d are not limited to two places, and may be provided at one place or three places or more.

10 Dimensional Bolt 11 Cap Screw 11a Battledore 12/13 Connection Plate 13b Connection 13c Plate 14 Connection Bolt (shaft bar)
20 Strut 22 Beam 23 Slit

Claims (1)

It is a joint for a wooden guard fence in which a wooden beam is installed between a plurality of wooden pillars erected at a predetermined interval,
Dimensional bolts that are inserted into shaft holes that are penetrated in the pillars,
Two cap screws screwed to both ends of the cutting bolt and having a feather plate portion on the head;
Two coupling plates that are pivotally coupled to the cap screw about a shaft rod that is inserted into the battledore, and are fitted and fixed to slits formed at both ends of the beam;
I have a,
One of the two connecting plates is a flat plate made of a single plate,
The other comprises a connecting part connected to the battledore part, and a plate part continuous to the tip of the connecting part,
A joint for a wooden guard fence, wherein the planar direction of the connecting portion and the planar direction of the plate portion intersect in a cross shape .

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