JP6942443B2 - Front type artificial wooden fence - Google Patents

Description

The present invention relates to a pseudo-wooden fence to be installed outdoors such as a promenade or a park, and more particularly to a front-type artificial wooden fence assembled by crossing a single or a plurality of crossbars on one side of adjacent columns.

Pseudo-wood fences in which the surface of a hard pipe is coated with a bark-patterned synthetic resin are well known.
A general artificial wooden fence has a structure in which both ends of a crossbar laid horizontally between adjacent columns are connected to the center position of the columns so that the crossbars do not protrude from the columns (Patent Documents 1 and 2).
Further, as shown in FIG. 10, a front type pseudo-wooden fence assembled by crossing a crossbar 71 on one side of adjacent columns 70 is also known (Patent Document 3).
In this front type artificial wooden fence, a cylindrical joint fitting 72 is fixed to the side surface of the support column 70 via a fixing bolt 73 that horizontally penetrates the support column 70.
The joint fitting 72 includes a tubular portion 72a through which the end portion of the crossbar 71 can be inserted, and a fixing nut 72b fixed to the central back surface of the tubular portion 72a, and is a fixing bolt inserted from the rear surface side of the support column 70. The tubular portion 72a is fixed by screwing the tip of 73 to the fixing nut 72b.
To erection the crossbar 71 between adjacent columns 70, use the fixing bolt 73 and the fixing nut 72b with the end of each crossbar 71 inserted to the middle of the tubular portion 72a separated from the support column 70. The tubular portion 72a is fixed to the support column 70.
Finally, the overlapping portion of the tubular portion 72a and the crossbar 71 is fixed using the connecting bolt 75 and the nut 76.

Japanese Unexamined Patent Publication No. 6-117150 Japanese Unexamined Patent Publication No. 9-268532 Japanese Unexamined Patent Publication No. 2000-228718

The conventional front type artificial wooden fence has the following problems to be solved.
<1> Since the tubular portion 72a of the joint fitting 72 has a cylindrical shape, the crossbars 71 must be laid horizontally in order from one end of the fence in the extending direction, which not only results in poor assembly efficiency of the crossbars 71. It takes a lot of time and effort to assemble.
<2> When the crossbar 71 is connected between the start end and the end strut 70 of the artificial wooden fence and assembled in an endless shape, the assembling work of the crossbar 71 of the final span is very troublesome.
Specifically, the fixed multi-span tubular portion 72a must be temporarily removed from the column 70, the crossbar 71 must be inserted between the removed tubular portions 72a, and then the portion 72a must be re-fixed to the column 70. , It takes a lot of time and effort to assemble the crossbar 71 of the final span.
<3> When replacing the crossbar 71 due to deformation or damage, the joint fitting 72 having at least two spans is removed, and three to four workers support the crossbar 71 by hand while removing the crossbar 71. Assembling work must be performed, and it takes a lot of time and labor to replace the crossbar 71.
<4> In order to improve the appearance of the artificial wooden fence, the fixing nut 72b must be fixed to the back side of the joint fitting 72 by welding, caulking or the like, which is a factor of increasing the cost of the joint fitting 72.
<5> As another fixing structure of the joint fitting 72, it is also possible to fix the joint fitting 72 by using a long connecting bolt 73 that can penetrate both the support column 70 and the tubular portion 72a of the joint fitting 72. However, the bolt head is exposed on the front surface of the joint fitting 72, which spoils the appearance of the artificial wooden fence.

The present invention has been made in view of the above-mentioned points, and an object of the present invention is to provide the following front type artificial wooden fence.
<1> It is possible to improve workability and shorten the construction period.
<2> Partial replacement of crossbars can be done easily and in a short time.
<3> To reduce the cost of fitting equipment.

In the present invention, a plurality of columns erected at predetermined intervals, a single or a plurality of crossbars laid horizontally on one side of adjacent columns and pivotally supported by crossing each column, and adjacent crossbars. It is a front-type pseudo-wooden fence that is equipped with a split-type joint device that attaches to the columns while connecting the ends, and the columns and crossbars are composed of a core tube and a bark-patterned coating that covers the surface of the core tube. In the split type joint device, the end of the crossbar can be placed and the cross-sectional shape is approximately J-shaped, and the opening of the receiving joint can be closed and the cross-sectional shape is approximately C-shaped. And one attachment bolt that has a total length that allows the receiving joint and the strut to be inserted and rotatably supports the receiving joint with respect to the strut, and between the receiving joint and the lid joint that holds the crossbar. It is equipped with a plurality of independent connecting bolts having a total length that allows the joint to be inserted into the crosspiece, and the joint can be placed on the bottom of the end of the crossbar in a non-rollable state. A raised portion having an upright portion extending to and capable of storing the head of the mounting bolt projects outward to the center of the upright portion, and a bolt hole for inserting the mounting bolt is provided on the side surface of the raised portion. The receiving joint is fixed to the support column via the mounting bolt inserted from the inside of the receiving joint, and the receiving joint and the lid joint have a pair of elongated holes for inserting connecting bolts at intervals. Then, the independent connecting bolt is vertically inserted into the elongated hole opened in the receiving joint and the lid joint and the bolt hole provided at the end of the crossbar to hold the end of the crossbar adjacent to the receiving joint and the lid joint. It has a structure that is held and connected.
Further, in another embodiment of the present invention, a lattice unit is formed by the plurality of crossbars and a plurality of vertical rails intersecting and pivotally supported between the plurality of crossbars, and the vertical rails are formed into a core tube and the core tube. It is composed of a bark-patterned coating covering the surface of the above, and the ends of crossbars extending from adjacent lattice units are connected via the joint device.
Further, in another embodiment of the present invention, the support column is a drive-in type support column composed of a core tube to be driven into the ground in advance and a bark-patterned coating outer on the above-ground portion of the core tube.

The present invention can obtain at least one of the following effects.
<1> By using the split type joint device, there are no restrictions on the order in which the crossbars are laid horizontally, and the crossbars can be laid horizontally between the columns at arbitrary positions.
Therefore, the workability of the front type artificial wooden fence is improved and the construction period can be significantly shortened as compared with the conventional artificial wooden fence in which the crossbars are erected in order in the extending direction of the artificial wooden fence.
<2> Since the end of the crossbar can be placed on the receiving joint that has a substantially J-shape that constitutes the split type joint device, the crossbar can be efficiently laid between the columns, greatly shortening the construction period and saving labor. Can be planned.
<3> Since the crossbar can be laid horizontally between the columns at arbitrary positions, the crossbar can be partially replaced easily and in a short time, and an endless artificial wooden fence can be efficiently manufactured.
In particular, when exchanging crossbars, the number of workers can be significantly reduced compared to the past.
<4> Since the mounting bolt can be inserted from the inside of the receiving joint and fixed on the back side of the column, it is not necessary to provide a nut element in the receiving joint in advance.
Therefore, the cost of the joint device can be reduced.
<5> By forming the receiving joint with a countersunk portion and an upright portion, the receiving joint can be attached to the support column, and the end portion of the crossbar can be placed on the receiving joint in a stable posture.
<6> By integrally molding the raised portion with the upright portion of the receiving joint, the bending strength of the receiving joint is increased and the bearing capacity of the crossbar is increased.
<7> After the artificial wooden fence is manufactured, when the joint device is viewed from the front, the mounting bolt is hidden inside, and the receiving joint and the lid joint are formed as curved surfaces having the same curvature, so that the appearance is beautiful. ..

In the explanatory view of the front type artificial wooden fence according to the present invention, (a) is a front view of the front type artificial wooden fence with a part omitted, and (b) is a model view of a driving type support. Front view of joint device for attaching crossbars to stanchions Sectional view of III-III in FIG. Assembly perspective view of fitting device In the comparison model diagram of the joint device, (a) is a model diagram of inverse proportion 1 in which one cylinder is vertically divided to form a receiving joint and a lid joint, and (b) one cylinder is horizontally divided. Model diagram of inverse proportion 2 in which the receiving joint and the lid joint are formed Partial vertical cross-sectional view of the strut for explaining the work of attaching the joint to the strut Perspective view of a joint device for explaining the horizontal work of a crossbar Longitudinal cross-sectional view of a strut and a joint device for explaining the horizontal work of a crossbar Explanatory drawing of another embodiment An explanatory view of a conventional front-type artificial wooden fence, (a) is a perspective view of a front-type artificial wooden fence with a part omitted, and (b) is a vertical sectional view of a support and a crosspiece mounting portion.

Hereinafter, the present invention will be described with reference to the drawings.

<1> Outline of Front-type Pseudo-Wooden Fence The front-type pseudo-wooden fence of the present invention will be described with reference to FIG. A single or a plurality of crossbars 20 laid horizontally on one side and a split type joint device 30 attached to a support column 10 while connecting the ends of adjacent crossbars 20 are provided.
The present invention uses a split type joint device 30 as a means for fixing an intersection between a support column 10 and a crossbar 20, which is a known artificial wood material.

<2> Strut The strut 10 is a pillar having a circular or square cross-sectional shape in which the surface of the core tube 11 is covered with a bark-patterned coating 12. The lower part of the support column 10 is buried in a concrete foundation or a ground.
The core pipe 11 is a hard pipe such as a steel pipe, an aluminum pipe, a resin pipe, and a paper pipe, and the coating film 12 includes a hard resin, a soft resin, concrete, and the like.
In addition to the built-in type as shown in FIG. 1 (a), the support column 10 is provided with a tubular coating 12 on the above-ground portion of the core tube 11 which is previously placed in the ground as shown in FIG. 1 (b). It may be a driving type to be exteriorized.
In the case of the driving type, the coating film 12 has a thickness of 5 to 80 mm, and the coating film 12 is fixed to the core tube 11 by a fixing tool such as a nail, a screw, or a bolt.
A through hole 13 is bored in the main body of the support column 10 so as to be horizontally aligned with the mounting position of the joint device 30 (FIG. 3).

<3> Crossbar The crossbar 20 is a pillar having a circular or square cross-sectional shape in which the surface of a core pipe 21 such as a steel pipe is covered with a bark-patterned coating 22.
The core pipe 21 is a hard pipe such as a steel pipe, an aluminum pipe, a resin pipe, and a paper pipe, and the coating film 22 includes a hard resin, a soft resin, concrete, and the like.
A bolt hole 23 penetrating vertically is formed near the end of the crossbar 20 (FIG. 3).

<4> Joint device Explaining with reference to FIGS. 2 to 4, the split type joint device 30 includes a receiving joint 31 having a substantially J-shaped cross section on which the end portion of the crossbar 20 can be placed in a stable posture, and a receiving joint. A lid joint 35 having a substantially C-shaped cross section capable of closing the opening of 31, a mounting bolt 40 and a nut 41 for bolting the receiving joint 31 to the support column 10, and a receiving joint 31 for sandwiching the crossbar 20 together with the crossbar 20. It is provided with a connecting bolt 45 and a nut 46 which are inserted and connected between the lid joints 35.
In this example, a mode in which a square root round head bolt is used for the mounting bolt 40 and the connecting bolt 45 will be described, but known bolts can also be applied.
The attachment bolt 40 has a total length capable of penetrating the receiving joint 31 and the support column 10, and the connecting bolt 45 has a total length capable of penetrating between the receiving joint 31 holding the crossbar 20 and the lid joint 35.

<4.1> Receiving joint Explaining with reference to FIG. 4, the receiving joint 31 is a curved plate obtained by molding a single strip into an arc-shaped cross-sectional shape, and the end portion of the crossbar 20 is held in a stable posture. It has a dish portion 31a on which it can be placed, and an upright portion 31b extending upward from one end of the dish portion 31a.
The dish portion 31a is a portion that independently supports the bottom portion of the crossbar 20 in a non-rollable state.
A pair of elongated holes 32, 32 are formed at the lowermost portion of the dish portion 31a at intervals.
A raised portion 31c is integrally formed in the center of the raised portion 31b toward the outside, and a square bolt hole 33 through which the attachment bolt 40 can be inserted is formed on the flat side surface 31d of the raised portion 31c. There is.
The raised portion 31c can accommodate the entire head 40a of the mounting bolt 40 and can be easily formed by press working. The bolt hole 33 has a size that allows the square root 40b of the mounting bolt 40 to be inserted.
By integrally molding the raised portion 31c with the raised portion 31b, the bending strength of the receiving joint 31 is increased, and the bearing capacity of the crossbar 20 is increased.
Since the mounting bolt 40 can be inserted from the inside of the receiving joint 31 and fixed with a nut 41 or the like on the back side of the support column 10, it is not necessary to provide a nut element on the receiving joint 31.
Therefore, the cost of the joint device 30 can be reduced.

<4.2> Closure Joint The lid joint 35 is a curved plate having an arc-shaped cross section that covers the end portion of the crossbar 20, and can be formed by molding one strip into an arc-shaped cross-sectional shape.
The lid joint 35 is provided with a pair of elongated holes 36, 36 corresponding to the elongated holes 32, 32 of the receiving joint 31.

<4.3> Reason for separating the receiving joint and the lid joint In the present invention, the end portion of the crossbar 20 is sandwiched between the receiving joint 31 and the lid joint 35.
The reason why the receiving joint 31 and the lid joint 35 are formed of separate and independent members is that the end portion of the crossbar 20 is taken in and out from the front position of the joint device 30.

<4.4> Reason for forming the receiving joint with the countersunk portion and the upright portion The reason why the countersunk portion 31a and the standing portion 31b are formed on the receiving joint 31 is that the receiving joint 31 is attached to the support column 10 through the upright portion 31b and the countersunk portion 31 is formed. This is so that the end portion of the crossbar 20 is placed only on the portion 31a without dropping.
That is, as shown in the inverse proportion 1 of FIG. 5A, when one cylinder is vertically divided to form the receiving joint 31 and the lid joint 35, a semi-cylindrical receiving with the opening facing sideways. Although the joint 31 can be attached to the support column 10, there is a problem that the crosspiece 20 cannot be placed on the receiving joint 31 alone.
Further, as shown in the inverse proportion 2 of FIG. 5 (b), when one cylinder is horizontally divided (horizontally divided) to form the receiving joint 31 and the lid joint 35, a semi-cylindrical shape with the opening facing directly upward is formed. Although the end portion of the crossbar 20 can be accommodated in the receiving joint 31 of the above, there is a problem that the semi-cylindrical receiving joint 31 cannot be attached to the support column 10.
In the present invention, the countersunk portion 31a and the standing portion 31b are continuously formed on the receiving joint 31 in order to solve the above-mentioned problems and to achieve both mounting on the support column 10 and mounting of the end portion of the crossbar 20. ..

[Assembly method of front type artificial wooden fence]
A method of assembling a front type artificial wooden fence using the joint device 30 will be described.
In the explanation, it is assumed that the plurality of columns 10 are erected in advance.

<1> Mounting the receiving joint FIG. 6 shows a process of mounting the receiving joint 31 to the support column 10 using the mounting bolt 40.
The mounting bolt 40 is inserted from the inside of the receiving joint 31 through the bolt hole 33, the shaft portion 40c is inserted into the through hole 13 of the support column 10 and tightened with the nut 41 via the washer 43, and the receiving joint 31 is attached to the support column 10. Install.
The head 40a of the mounting bolt 40 is housed in the raised portion 31c and does not protrude toward the inner surface side of the raised portion 31b.
Since the receiving joint 31 is rotatable around the mounting bolt 40, the mounting angle of the receiving joint 31 can be changed according to the inclination of the ground on which the artificial wooden fence is installed.

<2> Installation of crossbars As will be described later, the crossbars 20 are erected by temporarily placing the ends of adjacent crossbars 20 on the receiving joint 31 and then covering and fixing the crossbars 35.
<2.1> Temporary placement of crossbars Explaining with reference to FIG. 7, the end portion of the crossbar 20 is placed on the upper surface of the upward receiving joint 31 attached to the adjacent columns 10 and bridged. The ends of the two crossbars 20 on the left and right are placed on one receiving joint 31.
At this time, the end portion of the crossbar 20 is only placed on each receiving joint 31, and the connecting bolt 45 is not used.
Since the temporary placement work of the crossbar 20 is a simple work of placing both ends of the crossbar 20 on each receiving joint 31, one worker can handle it.
Further, since the temporary placement work of the crossbar 20 can be performed at an arbitrary position, the crossbar 20 can be erected efficiently and in a short time as compared with the conventional assembly method in which the crossbar 20 is erected in order in the extending direction of the artificial wooden fence.

<2.2> Fixing the crossbars Explaining with reference to FIGS. 7 and 8, the lid joint 35 is covered over the ends of the two crossbars 20 placed on the receiving joint 31.
The elongated hole 36 of the lid joint 35, the bolt hole 23 at the end of the crossbar 20, and the elongated hole 32 of the receiving joint 31 are aligned, and the connecting bolt 45 is inserted downward from above the lid joint 35.
A nut 46 is screwed under the receiving joint 31 via a washer 47, and the end portion of the crossbar 20 is held and fixed by the receiving joint 31 and the lid joint 35 as shown in FIGS.
The temporary placement work and the fixing work of the crossbar 20 may be repeated, but the temporary placement work and the fixing work of the crossbar 20 may be performed in parallel.
In the front type artificial wooden fence, the crossbar 20 can be laid horizontally between arbitrary columns 10.
After the artificial wooden fence is manufactured, when the joint device 30 is viewed from the front, the mounting bolt 40 is hidden inside, and the receiving joint 31 and the lid joint 35 are formed as curved surfaces having the same curvature, so that the appearance is beautiful. be.

<3> When the artificial wooden fence has an endless shape Even when assembling the artificial wooden fence into an endless shape, it is not necessary to extend the crossbars 20 in order from one side, and the crossbars 20 are laid horizontally between the columns 10 from an arbitrary position. Can be manufactured.

<4> Case of replacing the crossbar The case of replacing the crossbar 20 due to damage or the like will be described with reference to FIG.
Both ends of the crossbar 20 are opened by removing the nut 46, pulling out the connecting bolt 45, and removing the two lid joints 35. In this state, the crossbar 20 is removed and replaced with a new crossbar 20.
In order to replace the crossbar 20 in this way, it is a simple operation of removing the minimum necessary two lid joints 35, so that even one worker can easily perform the replacement work in a short time.

[Other Embodiments]
Another pseudo-wooden fence in which the lattice unit 25 is erected between the adjacent columns 10 will be described with reference to FIG.
In the pseudo-wooden fence of this example, a plurality of vertical rails 24 are crossed between a plurality of columns 10 erected with a predetermined joint and two upper and lower crossbars 20 and 20, and the intersection is pivotally supported. It is provided with a grid unit 25 to be configured and a split-type joint device 30 to be attached to a support column 10 while connecting the ends of crossbars 20 extending from adjacent grid units 25.
Similar to the crossbar 20, the vertical crosspiece 24 is a pillar having a circular or square cross-sectional shape in which the surface of the core tube is covered with a bark-patterned coating.
The lattice unit 25 is manufactured in a lattice shape by connecting the upper and lower crosspieces 20, 20 and the intersections near the ends of the vertical bars 24 with bolts, rivets, pins, or the like. Each intersection of the crossbar 20 and the vertical rail 24 may be rigidly connected so as not to rotate, but may be pivotally supported so that the connection angle of these intersections is variable.
In this example, the lattice unit 25 can be suspended via the joint device 30 described above and erected between adjacent columns 10.

10 ... Support 11 ... Core tube 12 ... Coating 20 ... Crossbar 21 ... Core tube 22 ... Coating 24 ... Vertical rail 25 ... Lattice unit 30 ... Joint device 31 ... Receiving joint 31a ....・ Raised part 32 ・ ・ ・ ・ ・ Long hole 33 ・ ・ ・ ・ ・ Bolt hole 35 ・ ・ ・ ・ ・ Lid joint 36 ・ ・ ・ ・ ・ Long hole 40 ・ ・ ・ ・ ・ Mounting bolt 41 ・ ・ ・Nut 45 ・ ・ ・ ・ ・ Connecting bolt 46 ・ ・ ・ ・ ・ Nut

Claims (3)

Multiple columns erected at predetermined intervals, one or more crossbars laid horizontally on one side of adjacent columns and pivotally supported by crossing each column, and the ends of adjacent crossbars are connected. However, it is a front type artificial wooden fence provided with a split type joint device to be attached to a support column, and the support column and the crossbar are composed of a core pipe and a bark-patterned coating covering the surface of the core pipe.
The split type joint device includes a receiving joint on which the end of a crossbar can be placed and has a substantially J-shaped cross section.
A lid joint that can close the opening of the receiving joint and has a substantially C-shaped cross section,
A single mounting bolt that has a total length that allows the receiving joint and the strut to be inserted and that rotatably supports the receiving joint with respect to the strut.
It is equipped with a plurality of independent connecting bolts having a total length that can be inserted between a receiving joint holding a crossbar and a lid joint.
The receiving joint has a countersunk portion on which the bottom of the end portion of the crossbar cannot be mounted, and an upright portion extending upward from one end of the countersunk portion, and the head of the mounting bolt can be stored. The raised portion protrudes outward from the center of the raised portion, and has a bolt hole for inserting a mounting bolt on the side surface of the raised portion.
The receiving joint is fixed to the support column via the mounting bolt inserted from the inside of the receiving joint.
The receiving joint and the lid joint have elongated holes for inserting connecting bolts at intervals.
The independent connecting bolt is vertically inserted into the elongated hole opened in the receiving joint and the lid joint and the bolt hole provided at the end of the crossbar to hold the end of the crossbar adjacent to the receiving joint and the lid joint. The feature is that they are connected together.
Front type artificial wooden fence. A lattice unit is formed by the plurality of crossbars and a plurality of vertical rails crossed and pivotally supported between the plurality of crossbars, and the vertical rails are covered with a core tube and the surface of the core tube in a bark pattern. The front-type pseudo-wooden fence according to claim 1, wherein the ends of crossbars extending from adjacent lattice units are connected via the joint device. The support according to claim 1, wherein the support is a drive-in type support composed of a core tube to be driven into the ground in advance and a bark-patterned coating film outer on the above-ground portion of the core tube. Front type artificial wooden fence.

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