JP2017210766A - Wooden protection fence and connection metal fitting thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connection metal fitting of a wooden protection fence for connecting a wooden beam to the wooden protection fence and a wooden column.SOLUTION: A wooden protection fence is composed of a substrate 10 composed of a substantially rectangular thin plate, a pair of standing plates 11 erected on an upper surface of both end parts in the width direction of the substrate 10, a rectangular reinforcement plate 20 fixed to a reverse surface of the substrate 10 of a range of exceeding both end parts of the standing plates 11 except for both end parts of the substrate 10, a pair of regulation plates 21 suspended in the anti-standing plate direction in both end parts in the width direction of the reinforcement plate 20 in the one end part vicinity of the standing plates 11, a pair of sash bar plates 30 fixed in the width direction of the reverse surface of the substrate 10 separated by a constant distance from both end parts of the reinforcement plate 20, a long hole 12 bored in both end parts of the substrate 10, a support hole 13 bored in the substrate 10 in both end part vicinity of the reinforcement plate 20 and a fixing hole 14 bored by penetrating through the substrate 10 and the reinforcement plate 20 in the vicinity of the standing plates 11, and a connection metal fitting of the wooden protection fence formed with the substrate 10 between the reinforcement plate 20 and the sash bar plate 30 as a bending area D, is provided as a basis.SELECTED DRAWING: Figure 1

Description

  The present invention relates to various wooden guard fences, particularly wooden guard fences installed for the purpose of clearly indicating boundaries, safety measures and route guidance in areas such as parks, promenades, forest walking roads, and sidewalks where the natural environment is primarily emphasized. The present invention relates to a connection fitting for connecting a wooden beam to a wooden support of a wooden protective fence.

  Conventionally, when constructing various types of protective fences such as crossing prevention fences, boundary fences, fall prevention fences, etc., a cylindrical horizontal beam is installed from the upper ends of the columns arranged at a predetermined interval, and is approximately the same as the inner diameter of this horizontal beam. One end of a connecting member having an outer diameter is inserted into the end of the horizontal beam, and the other end of this connecting member is inserted into the end of the next horizontal beam and placed on the mounting portion provided at the upper end of the column. A method is generally used in which a horizontal beam is attached to the upper end of a column by inserting and fixing bolts in bolt holes provided at both ends of the connecting member.

  Conventional protective fences of the above structure have been frequently used from the viewpoint of durability and safety regardless of the installation location. The same was true for protective fences built in areas that emphasize the natural environment such as parks and promenades. However, in recent times, coupled with the increase in nature-oriented nature, promenades and forest walking roads in areas with an emphasis on the natural environment (mainly composed of gentle slopes and wider roads than ordinary walkways are suitable for forest therapy / therapy. As a construction method that harmonizes with nature in other areas, the demand for wooden fences using natural timber (especially thinned wood) is increasing. As such a wooden guard fence, a structure in which a wooden beam as a cross rail is connected using two connecting brackets on both sides of a single column is generally used.

  In addition, the inventor previously described a protrusion formed on both ends of a substantially flat plate base as a protective fence connection fitting suitable for connecting a wooden beam to a wooden support, and a base close to the protrusion. A protective fence connecting bracket composed of a wedge that protrudes so that the sharpened part faces the center, and an extension that extends from the base to the left and right, and a protective fence constructed using this connecting bracket (Patent Document 1).

JP 2006-183262 A

  According to the protective fence and its connecting fitting according to Patent Document 1, the construction work of the wooden beam is simple and the number of connecting fittings is minimized, so that the construction cost can be reduced. Moreover, since the connection fitting is not seen from the outside, the appearance is good. However, the protective fence as shown in Patent Document 1 cannot find a structural antiseptic effect, and the wooden beam is in a direction perpendicular to a wooden column vertically installed, that is, in a horizontal direction. It is not connected to only. Corresponding to the undulations and slopes of the area where the wooden guard fence is constructed, it is necessary to connect it with a predetermined angle in the vertical direction with respect to the column. Therefore, in order to incline the wooden beam and connect it to the support column, it is necessary to bend the portion of the connecting bracket that supports the wooden beam.

  The metal fittings for connecting the wooden beam to the column are required to have strength to cope with the load as an essential function. However, if the strength is increased, the location supporting the wooden beam can be changed to the vertical gradient of the installation location. It is difficult to construct the wooden beam by tilting it by bending it at a predetermined angle along with it and supporting the wooden beam at the bent part. On the other hand, if the strength is adjusted to facilitate bending, There is a possibility that the originally required strength cannot be maintained. For example, since the base of the connecting bracket of the protective fence according to Patent Document 1 is composed of a plate material having the same thickness, if the required strength is maintained, it is accurately bent at a predetermined angle according to the gradient of the wooden beam. Is difficult.

  Therefore, the present invention simultaneously satisfies both the problems of maintaining the strength required for the wooden guard fence and its connecting fitting and supporting the wooden beam by tilting, and the construction work is simple. A wooden guard fence that can enhance the atmosphere of natural wood by not being seen from the outside, has good appearance, and prevents corrosion without being exposed to wind and rain. The object is to provide the connecting fitting.

  In order to achieve the object of the present invention, a substrate made of a substantially rectangular thin plate, a pair of upright plates erected on the upper surfaces of both ends in the width direction of the substrate, and a substrate in a range exceeding both ends of the upright plate A rectangular reinforcing plate that is laminated and fixed on the back surface except for both ends of the substrate, and a pair of regulating plates that are suspended in the direction of the upright plate at both ends in the width direction of the reinforcing plate in the vicinity of one end of the upright plate, A pair of crosspieces stacked and fixed in the width direction of the back surface of the substrate that is spaced from the both ends of the reinforcing plate by a certain distance, a long hole drilled in both ends of the substrate, and a substrate in the vicinity of both ends of the reinforcing plate. A wooden protective fence connecting bracket that consists of a support hole and a fixed hole that penetrates the base plate and the reinforcing plate in the vicinity of the upright plate, and is formed with the base plate between the reinforcing plate and the crosspiece as a bending area. Provide as basic.

  The substrate is formed from a thin plate having a thickness of 2 mm, the reinforcing plate and the crosspiece are formed from a thin plate having a thickness of 1 mm, a configuration in which corners at both ends in the longitudinal direction of the substrate are cut off, and a bending area In the present invention, a configuration is provided in which the substrate is bent at a predetermined angle in either the vertical direction.

  Then, through the through-hole formed in the horizontal direction through the wooden column erected on the ground surface, the connecting bracket of the wooden guard fence having the above-described configuration is inserted, and the upright plate is positioned in the through-hole. At the same time, the restricting plate is brought into close contact with the support column to fix the connecting bracket to the support column through the fixing hole, and a wooden beam as a horizontal beam is placed on the end of the connecting bracket protruding from the support column to support the long hole. A wooden guard fence constructed by fixing a wooden beam through a hole is provided.

  Furthermore, in the bending area, the wooden beam is inclined and fixed at a predetermined angle by bending the substrate at any angle in the vertical direction, and the inclination angle of the wooden beam is the gradient of the construction area of the wooden guard fence. A configuration in which a slanted screw is inserted into the fixing hole, a connecting metal piece is fixed to the column by inserting a countersunk screw, and a wooden screw is fixed to the connecting metal fitting by inserting a coach screw into the support hole. To do.

  According to the present invention described above, since the rectangular reinforcing plate is fixed to the back surface of the substrate in a range exceeding both ends of the upright plate except for both ends of the substrate, even if the substrate is configured from a thin plate, The substrate and the reinforcing plate can be combined to obtain a necessary and sufficient strength as a connection fitting. In addition, since a bent region composed of only the substrate is provided between the substrate and the reinforcing plate and the substrate and the crosspiece, the substrate can be easily bent at an arbitrary angle in the vertical direction in this bent region. Can do. Therefore, it is possible to connect the wooden beam to the column by inclining at a predetermined angle along the gradient of the construction area of the wooden guard fence. In addition, since the crosspieces are fixed in the width direction of the back surface of the substrate that is separated from the end portion of the reinforcing plate by a certain distance, it is possible to effectively prevent distortion at the end portion of the connecting metal fitting.

  Therefore, the strength required of the connecting bracket for connecting the wooden beam to the column and the workability to connect the wooden beam to the column by tilting it at a predetermined angle along the vertical gradient of the construction area of the wooden guard fence Both can be realized at a high level. Furthermore, by changing the direction of the through hole of the support column, the insertion direction to the through hole of the connecting bracket can be adjusted arbitrarily, so the curve in the horizontal direction of the wooden guard fence is arbitrarily set according to the construction area A wooden guard fence can be constructed.

  Furthermore, since the left and right wooden beams can be connected to both ends of one connecting bracket, the number of brackets itself is halved compared to the conventional connecting bracket, and the construction work of the wooden guard fence is simplified. The construction cost can be reduced, and it can be firmly and firmly fixed. In addition, since the metal fittings used to connect the wooden beams are not seen from the outside, it is not clear that the metal protective fences that use natural wood are used to destroy the atmosphere. Is good and has good design.

The whole perspective view of the connecting metal fitting concerning the present invention. The front view of a connection metal fitting. The top view of a connection metal fitting. AA sectional drawing of FIG. BB sectional drawing of FIG. The whole perspective view of a substrate. The front view of a board | substrate. The top view of a board | substrate. The whole perspective view of a reinforcement board. The front view of a reinforcement board. The top view of a reinforcement board. (A) Whole perspective view of a crosspiece, (b) Front view, (c) Top view. Cross section explanatory drawing of the principal part of the wooden guard fence which uses a connection metal fitting. Cross section explanatory drawing of the principal part of the wooden guard fence which used the connecting metal fitting bent. The whole perspective view of a wooden guard fence. The principal part front view of a wooden guard fence. The front view of a support | pillar fixing bracket. The side view of a support | pillar fixing bracket. The top view of a support | pillar fixing metal fitting. The principal part front view which shows the standing state of a wooden support | pillar. The principal part top view which shows the standing state of a wooden support | pillar.

  Hereinafter, embodiments of a wooden guard fence and its connecting fitting according to the present invention will be described with reference to the drawings. 1 is an overall perspective view of a connecting bracket 1 of a wooden guard fence 2 according to the present invention, FIG. 2 is a front view thereof, FIG. 3 is a plan view thereof, FIG. 4 is a sectional view taken along line AA in FIG. FIG. 6 is an overall perspective view of the substrate 10, FIG. 7 is a front view thereof, and FIG. 8 is a plan view thereof.

  In the figure, the substrate 10 is made of a thin plate made of a metal having a rectangular shape in plan view (for example, stainless steel material such as SUS304), corners at both ends in the longitudinal direction are cut at predetermined angles, and the corners 10a, 10b, By cutting and forming 10c and 10d, convenience during handling is enhanced (see FIG. 6). In the illustrated example, the total length L × full width W × thickness T of the substrate 10 is formed to be 350 mm × 52 mm × 2 mm (see FIGS. 7 and 8).

  A pair of upright plates 11 are erected in the vertical direction on the upper surfaces of both ends in the width direction at the center of the substrate 10. In the illustrated example, the total width L1 × high H1 × thickness T1 of the upright plate 11 is formed to be 104 mm × 14 mm × 2 mm.

  9 is an overall perspective view of the reinforcing plate 20, FIG. 10 is a front view thereof, and FIG. 11 is a plan view thereof. The reinforcing plate 20 is made of a thin metal plate having a rectangular shape in plan view. In the illustrated example, the total length L2 × the total width W2 × the thickness T2 is formed to be 180 mm × 52 mm × 1 mm (see FIGS. 10 and 11). The reinforcing plate 20 is fixed to the back surface of the substrate 10 in a range exceeding both end portions of the upright plate 11 by an appropriate means such as spot welding, a screw, or an adhesive. Therefore, the reinforcing plate 20 is integrally laminated and fixed to the entire surface of the central portion of the back surface excluding both ends of the substrate 10. In the illustrated example, the thickness of the range where the reinforcing plate 20 is fixed to the substrate 10 is 3 mm (T + T2), and functions as a strength member that supports the load applied to the connection fitting 1 during use. On the other hand, if the thickness of the stainless steel material such as SUS304 is 3 mm, it is difficult to correct, and if the bending work is performed at the construction site of the wooden protective fence 2, the bending angle and the bending location will vary.

  A pair of rectangular regulation plates 21 are vertically suspended at both ends in the width direction in the vicinity of one end in the longitudinal direction of the reinforcing plate 20. In the illustrated example, the total width L3 × height H3 × thickness T3 of the regulating plate 21 is formed to be 20 mm × 16 mm × 1 mm (see FIGS. 10 and 11). In the state where the reinforcing plate 20 is fixed to the substrate 10, the regulation plate 21 is suspended in the opposite direction of the upright plate 11 in the vicinity of one end portion of the upright plate 11 of the substrate 10.

  12A is an overall perspective view of the crosspiece 30, FIG. 12B is a front view thereof, and FIG. 12C is a plan view thereof. The crosspiece 30 is made of a thin metal plate having a rectangular shape in plan view, and in the illustrated example, the total length L4 × the total width W4 × the thickness T4 is 52 mm × 10 mm × 1 mm. The crosspieces 30 are laminated and fixed by appropriate means such as spot welding, screws, adhesives or the like in the width direction of the back surface of the substrate 10 spaced apart from both ends of the reinforcing plate 20 fixed to the substrate 10 by a certain distance. In the illustrated example, the thickness of the range in which the crosspiece 30 is fixed to the substrate 10 is 3 mm (T + T4), and supports the load applied to the connection fitting 1 during use, and distortion at the end of the connection fitting 1. It functions as a strength member that prevents

  By adopting the above-described configuration, the connecting metal 1 is formed as a bent region D between the reinforcing plate 20 made of only the substrate 10 and the crosspiece 30. In this way, the substrate 10 is made of a thin plate, and the reinforcing plate 20 and the crosspiece 30 are fixed to the substrate 10 to constitute a strength member and realize strength to support the load applied to the connecting metal fitting 1. . At the same time, by forming D a bent region consisting only of a thin plate of the substrate 10 between the reinforcing plate 20 and the crosspiece 30, the connecting fitting 1 can be bent at a desired angle. In the illustrated example, a thin plate having a thickness of 2 mm is used as the substrate 10, and even when a stainless steel material such as SUS304 is bent at the construction site of the wooden guard fence 2, it is accurately at a predetermined bending angle and bending portion. Easy to process. The bent region D is sandwiched between a strength region made of a strength member to which the substrate 10 and the reinforcing plate 20 are integrally fixed, and a strength region made of a strength member to which the substrate 10 and the crosspiece 30 are fixed integrally. Therefore, the bending process at the time of construction is easy due to the difference in strength (the difference between the thickness T + T2 or T + T4 and the thickness T). As described above, it is one of the features of the present invention that the substrate 10 is provided with strength.

  The connection fitting 1 is formed with an appropriate mounting hole for fixing the connection fitting 1 to the wooden support 3 constituting the wooden guard fence 2 and fixing the wooden beam 4 to the connection fitting 1. In the illustrated example, a pair of long holes 12 are formed at both ends of the substrate 10 on the open end side of the crosspiece 30, and in the vicinity of both ends in the longitudinal direction of the reinforcing plate 20, that is, the reinforcing plate 20 and the crosspiece 30. A support hole 13 is drilled in the substrate 10 in the bending area D between them, and a fixing hole 14 is drilled through the substrate 10 and the reinforcing plate 20 in the vicinity of one end of the upright plate 11 in the longitudinal direction.

  Next, the configuration of the wooden guard fence 2 constructed by fixing the wooden beam 4 to the wooden support column 3 using the connection fitting 1 having the above configuration will be described. FIG. 13 is a cross-sectional explanatory view of a main part of a wooden guard fence using the connecting fitting 1. First, the fitting 1 is inserted into the through hole 5 formed by penetrating the inside of the round wooden support column 3 standing on the ground surface in the horizontal direction, and fixed to the back surface of the substrate 10. A regulating plate 21 suspended from the reinforcing plate 20 is brought into close contact with the side surface of the wooden column 3. Thereafter, a fixing tool such as a countersunk screw (not shown) is inserted from the fixing hole 14 into the through hole 5 of the wooden column 3 to fix the connection fitting 1 to the column. As a result, the connecting fitting 1 is fixed in the through hole 5 and both ends of the connecting fitting 1 protrude from the through hole 5.

  Next, when fixing the wooden beam 4 as a horizontal rail in the horizontal direction, the lower end surface is cut horizontally, and the end of the wooden beam 4 protrudes from the through hole 5 of the wooden column 3. The bolt 15 is inserted and fixed from the long hole 12, and a support tool such as a coach screw (not shown) is inserted from the support hole 13 and fixed to the wooden column 3. By performing this work for the number of the wooden beams 4 serving as horizontal rails, the wooden guard fence 2 shown in FIG. 13 is constructed. Furthermore, since the cutting direction in the horizontal direction of the through-hole 5 of the wooden support column 3 can be changed, the insertion direction of the connecting fitting 1 into the through-hole 5 can be arbitrarily adjusted. The curve can be set arbitrarily according to the construction area. In the illustrated example, a solid bar material having a diameter of 120 mm made of thinned wood was used as the wooden column 3 and the wooden beam 4.

 The above-described wooden guard fence 2 shown in FIG. 13 is a wooden beam 4 fixed in a direction orthogonal to the wooden support pillar 3, but depending on the place where the wooden guard fence 2 is constructed, it corresponds to the undulations and gradients. Thus, the wooden beam 4 needs to be connected to the wooden support column 3 while being inclined at a predetermined angle in the vertical direction. Therefore, in order to incline the wooden beam 4 and connect the wooden beam 4 to the wooden column 3, the reinforcing plate 20 is provided in the connecting metal 1 in order to easily bend both ends of the connecting metal 1 on which the wooden beam is placed and supported. A bent region D consisting only of the substrate 10 is formed between the crosspiece 30 and the crosspiece 30.

  Therefore, as shown in FIG. 14, after the connecting metal fitting 1 is inserted and fixed in the through-hole 5, the undulations and gradients of the place where the wooden guard fence 2 is constructed starting from the bending area D at both ends of the connecting metal fitting 1. Corresponding to the above, it is bent at a predetermined angle in the vertical direction. FIG. 14 shows an example in which the bent region D on the left side of the connecting fitting 1 is bent upward (clockwise direction) and the bent region D on the right side is bent downward (clockwise direction). The direction and angle of bending are arbitrarily set according to the installation location. The means for fixing the wooden beam 4 to both ends of the connecting fitting 1 bent in this way is the same as the case shown in FIG. The bent region D is sandwiched between a strength region made of a strength member to which the substrate 10 and the reinforcing plate 20 are integrally fixed, and a strength region made of a strength member to which the substrate 10 and the crosspiece 30 are fixed integrally. Therefore, the bending process at the time of construction is easy due to the difference in strength (the difference between the thickness T + T2 or T + T4 and the thickness T).

  Conventional wooden fences are in harmony with the natural environment and may look good on the outside, but they are less susceptible to corrosion than metal guard fences, have difficulty in durability, and remain difficult to replace parts. ing. This problem of corrosion is much more pronounced on wooden columns than on wooden beams, and is particularly pronounced at the ground where the wooden columns are in contact with the ground. This is because the ground part repeats drying and wetting, and it is easy to replenish nutrients, so deterioration due to corrosion is fast. At the same time, wooden struts and wooden beams may be damaged by collisions of objects and people, falling rocks, etc. However, many conventional wooden columns are directly embedded in the ground, and corrosion from the ground is inevitable and replacement is difficult.

  Therefore, in the present invention, in order to improve the durability and strength of the wooden guard fence 2, a structure that prevents corrosion of the wooden column 3 and facilitates its replacement is newly adopted. The configuration will be described below. 17 is a front view of the column fixing bracket 40 employed in the present invention, FIG. 18 is a side view thereof, FIG. 19 is a plan view thereof, FIG. 20 is a front view of a main portion showing a standing state of the wooden column 3, FIG. FIG. The column fixing bracket 40 includes a seat plate 41 made of a rectangular plate material having a predetermined area, and an insertion plate 43 made of a rectangular plate material having a predetermined area standing in the vertical direction at the center of the seat plate 41. Has been. A fixing hole 42 for fixing the seat plate 41 is formed in a corner portion of the seat plate 41, and one or a plurality of bolt holes 44 are formed in a central portion of the insertion plate 43. In the illustrated example, the overall length L5 × full width W5 × thickness T5 of the seat plate 41 is 220 mm × 220 mm × 3 mm, and the full width W6 × total height H6 × thickness T6 of the insertion plate 43 is 100 mm × 300 mm × 3 mm.

  In FIGS. 20 and 21, reference numeral 45 denotes a concrete foundation, and the wooden support 3 is erected on the foundation 45 through a support fixing bracket 40. First, a foundation 45 having a horizontal upper surface is constructed at a predetermined location where the wooden column 3 is erected corresponding to the undulations and gradients of the area where the wooden guard fence 2 is constructed. Then, the seat plate 41 of the column fixing bracket 40 is placed on the upper surface of the foundation 45 and fixed to the foundation 45 with the bolt 46 through the fixing hole 42. Next, an insertion hole 47 capable of accommodating the insertion plate 43 is cut and formed on the lower end surface of the wooden column 3, and the insertion hole 47 is covered with the insertion plate 43 of the column fixing bracket 40 and fixed with a bolt 48. The wooden support 3 is erected.

  Such a wooden support 3 has a foundation 45 and a seat plate 41 of the support fixing bracket 40 at a ground part that causes corrosion, so that the edge of the wooden support 3 is cut off from the ground to reduce the corrosion. The durability is improved and the life can be extended. Moreover, since the wooden support | pillar 3 is being fixed to the foundation 45 with the support | pillar fixing bracket 40, intensity | strength is reinforced and there is little damage. Furthermore, even when the corrosion requires replacement, the replacement can be easily performed by simply removing the bolt and removing the wooden support 3 from the insertion plate 43 of the support fixing bracket 40. In addition, since the wooden beam 4 is also fixed to the wooden support column 3 using the connection fitting 1 having the above-described configuration, the wooden beam 4 itself can be easily replaced.

  According to the present invention described above, since the rectangular reinforcing plate is fixed to the back surface of the substrate in a range exceeding both ends of the upright plate except for both ends of the substrate, even if the substrate is configured from a thin plate, The substrate and the reinforcing plate can be combined to obtain a necessary and sufficient strength as a connection fitting. In addition, since a bent region composed of only the substrate is provided between the substrate and the reinforcing plate and the substrate and the crosspiece, the substrate can be easily bent at an arbitrary angle in the vertical direction in this bent region. Can do. Therefore, it is possible to connect the wooden beam to the column by inclining at a predetermined angle along the gradient of the construction area of the wooden guard fence. In addition, since the crosspieces are fixed in the width direction of the back surface of the substrate that is separated from the end portion of the reinforcing plate by a certain distance, it is possible to effectively prevent distortion at the end portion of the connecting metal fitting.

  Therefore, the strength required for the connecting bracket for connecting the wooden beam to the support and the workability of connecting the wooden beam to the support by inclining at a predetermined angle along the gradient of the construction area of the wooden guard fence. Both can be realized at a high level. Furthermore, by changing the direction of the through hole of the support column, the insertion direction to the through hole of the connecting bracket can be adjusted arbitrarily, so the curve in the horizontal direction of the wooden guard fence is arbitrarily set according to the construction area A wooden guard fence can be constructed.

  Furthermore, since the left and right wooden beams can be connected to both ends of one connecting bracket, the number of brackets itself is halved compared to the conventional connecting bracket, and the construction work of the wooden guard fence is simplified. The construction cost can be reduced, and it can be firmly and firmly fixed. In addition, since the metal fittings used to connect the wooden beams are not seen from the outside, it is not clear that the metal protective fences that use natural wood are used to destroy the atmosphere. Is good and has good design.

DESCRIPTION OF SYMBOLS 1 ... Connection metal fitting 2 ... Wooden guard fence 3 ... Wooden support | pillar 4 ... Wooden beam 5 ... Through-hole 10 ... Substrate 11 ... Standing plate 12 ... Long hole 13 ... Support hole 14,42 ... Fixed hole 20 ... Reinforcement plate 21 ... Restriction plate DESCRIPTION OF SYMBOLS 30 ... Crosspiece 40 ... Prop fixing bracket 41 ... Seat plate 43 ... Insertion plate 44 ... Bolt hole 45 ... (Concrete) foundation 46, 48 ... Bolt 47 ... Insertion hole

Claims (9)

  Laminate except for both ends of the substrate on the back surface of the substrate in a range exceeding both ends of the upright plate, and a pair of upright plates standing on the upper surface of both ends in the width direction of the substrate. A rectangular reinforcing plate fixed in a fixed manner, a pair of regulating plates suspended in the widthwise opposite ends of the reinforcing plate in the vicinity of one end of the upright plate, and a substrate spaced apart from the both ends of the reinforcing plate by a certain distance In the vicinity of the upright plate, a pair of crosspieces stacked and fixed in the width direction of the back surface of the substrate, a long hole drilled in both ends of the substrate, a support hole drilled in the substrate in the vicinity of both ends of the reinforcing plate, and A wooden protective fence connecting bracket comprising a fixed hole formed through a substrate and a reinforcing plate, and the substrate between the reinforcing plate and the crosspiece is formed as a bent region.   2. The wooden guard fence connecting bracket according to claim 1, wherein the substrate is formed from a thin plate having a thickness of 2 mm, and the reinforcing plate and the crosspiece are formed from a thin plate having a thickness of 1 mm.   3. A wooden guard fence connecting bracket according to claim 1 or 2, wherein corners at both ends in the longitudinal direction of the substrate are cut off.   The wooden protective fence connecting bracket according to claim 1, 2, or 3, wherein the substrate is bent at a predetermined angle in any of the vertical directions in the bending region.   A wooden protective fence connecting bracket according to any one of claims 1 to 4 is inserted into a through-hole formed in a horizontal direction through a wooden support column erected on the ground surface, and an upright plate is mounted. The coupling plate is fixed to the column through the fixing hole by placing the regulating plate in close contact with the column, and the wooden beam as a horizontal beam is placed on the end of the coupling bracket protruding from the column. A wooden guard fence constructed by fixing a wooden beam through a long hole and a support hole.   6. The wooden guard fence according to claim 5, wherein the wooden beam is inclined and fixed at a predetermined angle by bending the substrate in any of the vertical directions at a predetermined angle in the bending region.   The wooden guard fence according to claim 6, wherein the tilt angle of the wooden beam is tilted at a predetermined angle along the gradient of the construction area of the wooden guard fence.   The wooden guard fence according to claim 5, 6 or 7, wherein a countersunk screw is inserted into the fixing hole to fix the connecting bracket to the support column.   The wooden guard fence according to claim 5, 6, 7 or 8, wherein a wooden beam is fixed to the connecting bracket by inserting a coach screw into the support hole.

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