JP2747766B2 - Mesh fence - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mesh fence, that is, a mesh panel formed by fitting both ends of a mesh panel into vertical dovetails of a column without using special fasteners such as bolts and nuts. This is related to mesh fences to be fastened to pillars, and compensates for the gap error by expanding and contracting the mesh panel in the width direction regardless of small errors in the spacing between the vertical dovetailed pillars buried and fixed at predetermined intervals As a result, the assembling work can be simplified and facilitated, thereby reducing the construction cost of the mesh fence.

[0002]

2. Description of the Related Art A mesh fence in which a mesh panel is fixed to a column having a vertical dovetail groove is conventionally known, and is used for a fence for a house, a protection fence and the like. The fastening mechanism between the mesh panel and the support of the conventional mesh fence will be described with reference to FIGS. This mesh panel P is composed of horizontal and vertical metal wires (wires) 1 and 1a combined in a mesh shape and fixed to each other by welding, and both right and left ends thereof are fastened to a dovetail groove g of a metal pipe support 2 by fastening fasteners 3. Is fixedly assembled by A fastening member is constituted by the clamp 3 and the tightening bolt 4 in which the tips of the pair of clamp plates 3a and 3b combined with each other are open in a C shape. Insert the tip of the clamp 3 into the dovetail groove g of the column 2 with the vertical wire members 1a at the left and right ends sandwiched between the clamp plates 3a and 3b, and then tighten the rear ends of the clamp plates 3a and 3b with the tightening bolts 4. When tightened, the distal end of the clamp 3 is expanded and pressed against and fixed to the inner surface of the dovetail groove g of the support column 2, and the vertical wire 1a at both ends is gripped. Therefore, by tightening the tightening bolts 4, both ends of the mesh panel P are fixed to the columns via the clamps 3.
A large number of fasteners are arranged at regular intervals at each end of the mesh panel P, and each end of the mesh panel P is fixed to the column by a large number of fasteners. The work of attaching the mesh panel P to the column 2 by using the fasteners is quite troublesome and requires a lot of trouble, especially when the fence is installed on a slope at a slant. However, this assembling work becomes more troublesome. In most cases, the lower end of the mesh panel P is often buried and fixed to the upper end of a concrete foundation (or protective wall) C via a mortar M, and the upper end is pressed by an end cap 5 placed on the upper end of a column. Therefore, the right and left ends of the mesh panel do not necessarily need to be firmly fastened to the support, but may be practically fastened to such an extent that the mesh does not rattle. In order to simplify the connection work between the column ends of the mesh panel and the column of the above-mentioned known mesh fence, the fastening mechanism is devised so that both ends of the mesh panel can be fixed to the column by fitting without using a fastener. (The one described in JP-A-6-33640. See FIG. 1 and FIG. 1-A. This is hereinafter referred to as "the prior application mesh fence."
). In the above-mentioned prior application, both ends of the horizontal wire of the mesh panel are projected outwardly from the vertical wire at the outer end, and this projection is bent laterally into an L shape to form a hook, and the vertical ends of both ends of the mesh panel are formed. The upper end of the wire is folded in an inverted U-shape to form a hook, and the L-shaped hooks at both ends of the horizontal wire are fitted into the vertical dovetails of the column, and are brought into close contact with the inner surface of the dovetail. Is hooked on the upper end of the column and locked, so that the tolerance of the error of the interval between the columns with respect to the width of the mesh panel is extremely small. For this reason, if the support spacing is slightly different, it is almost impossible to assemble the mesh panel to the support. However, a fixed number of pillars are fixed to a concrete floor or concrete block at regular intervals (usually about 2 m), and a mesh panel is then fitted and assembled between the pillars. The dimensions are not always accurate, and in severe cases the errors exceed the permissible limits, which often makes it impossible to install the mesh panel. If the distance between the columns is less than 1 cm, it is possible to cope with it by slightly extending or shortening the L-shaped hooks at both ends of the mesh panel. In the mesh panel of the prior application, the L-shaped hooks at the left and right ends of the mesh panel are fitted into the dovetail grooves of the support column and fitted to the support column, and are fixed to the support column. It is not possible to adjust the mounting width by using the above method. For this reason, if the error in the spacing between the columns exceeds 1 to 2 cm, there is no other way to take special measures such as re-installing the columns. Therefore, the columns must be installed at precise intervals, and it is not easy to correct the mesh panel for compensating for some errors. Further, when the error of the intervals is large, there is no way to correct the errors.

[0003]

SUMMARY OF THE INVENTION The present invention relates to the above-mentioned mesh fence, wherein the mesh panel itself can be expanded and contracted within a certain range in the width direction, and the mesh panel can be stretched in accordance with the above-mentioned spacing error between the columns. It is an object of the present invention to make it easy to adjust the width and to make the work of assembling a mesh panel and a support column simple and easy.

[0004]

Means taken to solve the above problem are constituted by the following elements (a) and (b) on the premise of the mesh fence of the prior application. That is, (a) the hook is formed by bending both ends of the horizontal wire of the mesh panel sideways into an L-shape, and the upper ends of the vertical wires at both ends of the mesh panel are folded back in an inverted U-shape to form a hook. For the mesh fence in which the L-shaped hooks at both ends are fitted into the vertical dovetail groove of the support, and the inverted U-shaped hook at the upper end of the vertical wire is hooked and locked at the upper end of the support, (b) bending the mesh panel Processing, a plurality of longitudinal grooves that can expand and contract in the width direction are provided at intervals, so that the length in the width direction can be adjusted.

[0005]

[Operation] If the mesh panel of the earlier application is bent to form an arc-shaped or trapezoidal vertical groove, the horizontal wire of the mesh panel is partially bent into an arc or trapezoid, and the horizontal wire is bent. As a result, the mesh panel is reduced in the width direction, and in this state, a predetermined width (for example, 2
m). Then, when a lateral force is applied to the mesh panel, the mesh panel expands and contracts at an arc or a portion bent into a trapezoid, so that the width of the mesh panel can be adjusted to match the spacing between the columns. Since the width of the vertical groove is relatively small (substantially several cm) and provided at intervals, the shape of the entire mesh panel is not flat but corrugated. Since the width of the flutes is small, this does not impair the rigidity of the mesh panel, and the width of one flute in the horizontal direction is not large, but several flutes spaced apart expand and contract. Therefore, the width of one mesh panel can be corrected to a width of several cm or more, and the appearance of the mesh panel in the corrected state is almost the same as before the correction. Adjust the width of the mesh panel to the distance between the posts, extend it if it is not enough, shorten it if it is too wide and fit it down, then push both ends of the mesh panel into the vertical dovetail of the post from above The above-mentioned L-shaped hook is fitted into the dovetail groove and is brought into close contact with the inner surface of the dovetail groove. Subsequent assembly work is the same as the mesh fence of the earlier application. That is, when the inverted U-shaped hook at the upper end of the vertical wire at the end of the mesh panel is hooked and locked on the upper end of the column, the mesh panel is positioned with respect to the column in the front-back, left-right direction without play. Then, by fitting and fixing the end cap to the upper end of the pillar, the inverted U-shaped hook at the upper end of the vertical wire at both ends of the mesh panel is pressed by the end cap, so that the mesh panel can be moved in front and rear, left and right and up and down directions. It is firmly fixed to the column without play. Just pushing both ends of the mesh panel into the dovetail groove of the column from above will position the mesh panel against the column without play, and then fit the end cap to the column,
By fixing, the mesh panel is firmly fixed to the column, so the work of assembling the mesh panel to the column of the prior application, which is almost impossible to adjust the width for the error of the column interval, can be performed very easily. it can.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 shows that the left and right ends of the horizontal wire 11 of the mesh panel P project outward beyond the vertical wire at the outer end, and this projection is simply bent laterally at right angles to form an L-shaped hook 11a. Are formed, and every other hook 11a is turned in the opposite direction. This hook 1
The width b in the horizontal direction of 1a is １ ／ of the width B of the dovetail groove g of the support 12.
It is substantially equal to slightly greater width B ₁ than. Vertical wire 13
Is simply folded downward in a U-shape on the same plane as the mesh panel P to form an inverted U-shaped hook 13a. Hook 13a when because this hook 13a is intended to engage in hooked to the upper end 14e of the bottom wall 14 of the dovetail g struts 12, the width b ₁ is obtained by fitting the hooks 11a of the horizontal member to the dovetail groove g The tip 13e of the left and right dovetail g
Must be dimensioned to fit into the gap 12a between the bottom walls 14, 14. Six arc-shaped bends 11b are provided at intervals in the horizontal wire 11 of the mesh panel P, thereby forming a vertical groove G having six semi-circular cross sections. In this embodiment, the width of the mesh panel is 2 m, the pitch p of the vertical wire is 40 mm, and the height is 12 mm.
It is 00 mm and the number of horizontal wires is 40. When the horizontal wire 11 is bent into an arc having a radius of 27 mm around an arbitrary vertical wire 13-a, the width w of the vertical groove G becomes 54 mm. Pitch p ₁ between the vertical wires in the longitudinal groove 13mm shorter than the pitch p between other longitudinal wire. Since one vertical groove G is formed using two pitch widths, the mesh panel can be extended up to 26 mm in the width direction by one vertical groove G. Further, when a compressive force F in the width direction is applied to the mesh panel to bring the vertical wires 13-b and 13-c as close as possible, the width of the mesh panel becomes 54-2 × d (vertical wire diameter) m
m. Therefore, the width of the entire mesh panel can be extended by 156 mm, and can be reduced by approximately 300 mm. Match the mesh panel P to the distance L between the columns (Fig. 2). If the width is not enough, pull the mesh panel in the width direction to expand the width, and if it is too wide, compress it in the width direction to shorten the width. Let it match. afterwards,
When both ends of the mesh panel P are pushed into the dovetail groove g of the column 12 from above, the hooks 11a of the horizontal wire 11 are fitted into the dovetail groove g and adhere to the inner surface thereof (see FIG. 1A), and the vertical wire 13
Of the dovetail groove engages with the upper end 14e of the bottom wall 14 of the dovetail groove. Since the tip of the hook 11a is engaged with the dovetail groove g, the mesh panel P is locked to the support column 12 without back and forth and left and right play. Further, since the hook 13a of the vertical wire 13 is engaged with the upper end 14e of the column, the mesh panel P is also positioned in the vertical direction. In this state, by fitting and fixing the end cap 5 to the upper end of the support 12 (FIG. 2), the mesh panel is firmly fixed to the support 12 without back and forth, left and right, and up and down directions. The mesh fence is assembled by sequentially assembling the mesh panels P to the supports arranged at intervals of about 2 meters (FIG. 2). The rust prevention effect, durability and appearance of the mesh fence can be remarkably improved by adopting an iron core material coated with aluminum for the wires 11, 13 and the pillars 12 of the mesh panel P. When the vertical wire and the horizontal wire with aluminum core coated on the iron core are electrically welded to each other, the aluminum coating has good conductivity and a large current flows through this coating to melt the aluminum coating. Requires some ingenuity. In a normal mesh panel P, a horizontal wire is overlapped with a vertical wire alternately on the front and back sides. When the above aluminum-coated wire is used, all the horizontal wires are the same as the vertical wire as shown in FIG. The above-described problem in electric welding can be solved by arranging them on a flat surface (unifying them on either the front surface or the back surface). In actual construction, the width W of the mesh panel and the distance L between the columns are set.
Is hardly completely coincident with each other, and there is usually an error of 2 to 3 mm. This degree of error is corrected by applying a slight force in the width direction to the mesh panel when the mesh panel is fitted between the columns, and this correction causes the horizontal wire in each vertical groove G to slightly move in the width direction. Elastically deform. Due to the restoring force due to this elastic deformation, the hooks 11a at both ends are elastically pressed against the inner surfaces of the dovetail grooves g of the columns 12, so that the mesh panels P do not rattle against the columns 12 at both ends, and are in an extremely stable state. Assembled with In the above, the vertical groove provided in the mesh panel has been described as having an arc shape in cross section. The vertical groove having a trapezoidal cross section will be further described with reference to FIG. Mesh panels P horizontal lines material 11 pair of oblique portions 11c at intervals to, 11d and have provided five sets, whereby cross-sectional shape is a longitudinal groove G ₁ of the trapezoid 5
Individually formed. In the second embodiment, the basic specifications of the mesh panel P are the same as those in the first embodiment. Around the two arbitrary vertical lines 13-a, longitudinal groove G ₁ of the trapezoid is formed when bending the horizontal line 11 at the left and right half of the pitch p between the longitudinal wires at an angle. Horizontal line of the oblique portion 11c, when the angle of 11d to 45 degrees to the horizontal line, since the pitch between the longitudinal wires is 50 mm, the width w of the longitudinal groove _{G 1} becomes approximately 85 mm. Therefore, it means being 15mm shorter by one of the longitudinal grooves, mesh panels is the maximum 15mm extensible by one longitudinal groove G _1. When a compressive force F in the width direction is applied to the mesh panel to make the oblique portions 11c and 11d of the horizontal lines perpendicular to each other, the width of the mesh panel becomes ₁ per vertical groove G1.
It is reduced by 5 mm (see FIG. 4). Therefore, the width of the entire mesh panel can be expanded and contracted by 75 mm. In this second embodiment has formed the longitudinal groove G ₁ trapezoidal using three eyes between the four vertical lines, which in contrivance for not disturb the form of flat mesh panel as much as possible Therefore, it is not always essential for the present invention that the shape of the vertical groove be literally trapezoidal. Although longitudinal groove G ₁ is the appearance of a the mesh panels at an acute angle shape is impaired slightly, may form a longitudinal groove of trapezoidal with two eyes Disregarding this point, the more one eye It may be used to form a small V-shaped vertical groove. In this case, one vertical groove cannot be expanded or contracted greatly (when the mesh panel is shortened, vertical sharp projections protrude in places). It is necessary to provide about ten numbers. Then, vertical grooves or projections having a V-shaped cross section are arranged at intervals of 20 cm (every fourth one).

[0007]

As described above, the present invention solves the above-mentioned problems, and makes it easy and easy to expand and contract in the width direction of the mesh panel of the earlier application in which the adjustment of the mounting width is almost impossible. This facilitates compensation for errors in the spacing between the posts of the mesh fence, simplifies and facilitates the work of assembling the mesh panel to the posts, and significantly reduces the construction cost. In addition, in spite of not using any fasteners, both ends of the mesh panel can be attached to the support column in a stable state without play in the front, rear, left, right, and vertical directions. By making the mesh panel of the earlier application completely corrugated, it is possible to expand and contract it, but in this case, the rigidity of the mesh panel itself is low, shape retention is inferior,
The shape of the mesh panel does not have the appearance of a flat plate, and thus the appearance of the finished fence is extremely poor. In addition, when a compressive force in the width direction is applied, the force is dispersed throughout the mesh panel, so that the intermediate portion is bent and the shape is further impaired. According to the present invention, the rigidity and shape retention of the mesh panel of the prior application are not impaired at all, and the deformation due to the compression in the width direction can be concentrated in the vertical groove, so that the intermediate portion is bent and the entire shape is deformed. Never. Further, since the mesh panel has elasticity in the width direction due to the expansion and contraction of the vertical groove, the hooks at the left and right ends of the mesh panel strongly engage with the inner side surfaces of the dovetail groove of the column due to the elasticity when the mesh panel is attached to the column. Further, since the pretension or the precompression force in the width direction is applied to the mesh panel itself, the mesh fence does not become loose with the elapse of time, so that the durability of the mesh fence is improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a state before assembling a mesh panel and columns according to a first embodiment of the present invention.

FIG. 1A is a plan view showing a state where a mesh panel is assembled to a support.

FIG. 2 is a perspective view of the mesh fence according to the embodiment of FIG.

FIG. 3 is a schematic plan view of the mesh panel of the first embodiment.

FIG. 4 is a schematic plan view of a mesh panel according to a second embodiment.

FIG. 5 is a perspective view of a conventionally known mesh panel and columns.

FIG. 6 is a perspective view showing a state in which an end cap of the column is fitted and fixed to an upper end of the column.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Horizontal metal wire 1a ... Vertical metal wire 3 ... Clamp 3a, 3b ... Clamp plate 4 ... Tightening bolt 5 ... End cap 11 ... Horizontal wire 11a ... · L-shaped hook 11b · · · arcuate bending 11c, 11d · · · Diagonal part 2, 12 · · · Support 12a · · · Gap between bottom walls 14, 14 13, 13-b, 13-c · ..Vertical wire 13a ・ ・ ・ Inverted U-shaped hook 13e ・ ・ ・ End of inverted U-shaped hook 13a 13-a ・ ・ ・ Any vertical wire 14 ・ ・ ・ Bottom wall of dovetail g 14e ・ ・ ・ Bottom Upper edge of wall P: mesh panel G: arc-shaped vertical groove G _1: trapezoidal vertical groove C: concrete table M: mortar L: column spacing B: dovetail Groove width B ₁ ... Width slightly larger than 1/2 of dovetail groove B b ... Width of L-shaped hook 11a in the horizontal direction b ₁ : width of tip 13e of inverted U-shaped hook 13a g: dovetail groove p: pitch of vertical wire p ₁ : pitch between vertical wires in vertical groove G w: vertical groove G, width of G ₁ F: compression force

Claims (2)

(57) [Claims] The present invention is characterized in that both ends of a horizontal wire of a mesh panel are projected outward from vertical wires at both ends of a mesh panel, and this projection is bent laterally into an L shape to form a hook. A hook is formed by folding the upper end of the wire in an inverted U-shape, and the L-shaped hooks at both ends of the horizontal wire are fitted into the vertical dovetails of the support column and brought into close contact with the inner side surface of the dovetail. A mesh fence in which an inverted U-shaped hook at an upper end of the mesh panel is hooked and locked at an upper end of a pillar, and the mesh panel is bent to form a plurality of longitudinal grooves which can be extended and contracted in a width direction thereof. The mesh fence described above, wherein the length in the width direction can be adjusted. 2. The mesh fence according to claim 1, wherein said flutes are arcs or trapezoids having a relatively narrow width.