Connection and fixing fixture

Abstract

To provide a connecting fixture which can connect two adjacent temporary enclosure panels together and can easily fix the connecting part to a single pipe of a support frame with good workability. [Solution] A connecting fixing device 1 is used to connect the widthwise end edges of two adjacent temporary fencing panels together and to fix the connecting portion of the two temporary fencing panels to a single pipe of a supporting frame body.The connecting fixing device 1 comprises a fixed arm 10 bent at a right angle and a movable arm 20 whose base end is rotatably supported on the fixed arm 10, and the tips of the fixed arm 10 and the movable arm 20 are respectively formed with locking hooks 10b, 20b bent in directions toward each other, the fixed arm 10 and the movable arm 20 are respectively formed with cutout holes 10a, 20a that fit into the outer periphery of the single pipe, and a push bolt 11 is threaded into the fixed arm 20 which moves back and forth as it is rotated and abuts against the outer periphery of the single pipe.

Description

[Technical Field]

[0001] This invention relates to a connecting fixture used to connect the edges of multiple temporary enclosure panels and secure the connecting parts to a single pipe of a supporting frame when constructing a temporary enclosure around a construction site, etc.

[0002] Traditionally, construction sites and material storage areas have been surrounded by temporary fences to ensure safety during work there and to preserve the landscape. Such temporary fences are constructed by erecting multiple rectangular temporary fence panels around the construction site, butting the widthwise edges of adjacent panels together, connecting the panels together with connecting fixtures, and fastening the connecting parts of both panels to a horizontal single pipe (horizontal frame) of a support frame installed on the outside of the temporary fence.

[0003] An example of a conventional connecting fixture is shown in Fig. 12. Fig. 12 is a perspective view of the connecting fixture disclosed in Patent Document 1, and the illustrated connecting fixture 101 is configured such that a pair of U-shaped arms 120, bent into a U-shape in side view, are pivotally supported at both widthwise ends of a rectangular plate-like clamp base 110 so as to be rotatable in the direction of the arrow, and a push bolt 111 is threadably inserted and advanced through the center of the clamp base 110. Here, locking hooks 120a are formed at the tips of the U-shaped arms 120, bent at approximately right angles so as to face each other.

[0004] To construct the temporary fence W shown in Figure 13 using the connecting fixture 101 configured as described above, two adjacent temporary fence panels P1, P2 are joined together by a concave-convex fit, and the joint is fixed to the horizontal single pipe 131 of the support frame body using the connecting fixture 101. That is, as shown in Figure 13(a), the fitting convex portion p1 formed in the vertical direction (perpendicular to the paper surface of Figure 13) on the side edge of one adjacent temporary fence panel P1 is fitted into the fitting concave portion p2 formed in the vertical direction on the side edge of the other temporary fence panel P2, thereby joining the two temporary fence panels P1, P2. Then, the connecting fixture 101 is set on the horizontal single pipe 131 of the support frame, and the worker manually rotates the pair of U-shaped arms 120, which are in the open state of the connecting fixture 101 (the state shown by the solid line in Figure 13(a)), in the direction of the arrow from the position shown by the solid line in Figure 13(a) to the position shown by the dotted line, and aligns the position of the locking hooks 120a of each U-shaped arm 120 with the positions of the engagement grooves p3, p4 formed on the side edges of adjacent temporary enclosure panels P1, P2.

[0005] Next, as shown in Figure 13(b), the push bolt 111 is turned in the direction of the arrow. This causes the push bolt 111 to move toward the single pipe 131, and the locking hooks 120a formed at the tips of the pair of U-shaped arms 120 of the connecting fixture 101 engage with the engagement grooves p3 and p4 of the two adjacent temporary fence panels P1 and P2, respectively. As a result, the joints at the widthwise ends of the two adjacent temporary fence panels P1 and P2 are connected to each other by the connecting fixture 101 and fixed to the single pipe 131. By repeating the above steps, a temporary fence W is constructed around a construction site or the like. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Utility Model Registration No. 3247551 Summary of the Invention [Problem to be solved by the invention]

[0007] However, in the conventional connecting fixture 101 shown in Figure 12, the pair of U-shaped arms 120 are rotatable relative to the clamp base 110, so when using this connecting fixture 101 to fix the temporary enclosure panels P1 and P2 to the single pipe 131 as shown in Figures 13(a) and (b), the worker must operate the two rotatable U-shaped arms 120 with both hands to align the position of each locking hook 120a to a predetermined position (a position that matches the respective engagement grooves p3 and p4 of the two adjacent temporary enclosure panels P1 and P2), which results in poor workability.

[0008] This invention was made in consideration of the above problem, and its purpose is to provide a connecting and fixing device that can connect two adjacent temporary enclosure panels and easily fix the connecting part to a single pipe of a supporting frame body with good workability. [Means for solving the problem]

[0009] In order to achieve the above-mentioned object, the invention described in claim 1 is a connecting and fixing device for connecting the widthwise end edges of two adjacent temporary fencing panels of a plurality of temporary fencing panels and for fixing the connecting portion of the two temporary fencing panels to a single pipe of a supporting frame body, characterized in that it comprises a fixed arm bent at a right angle and a movable arm whose base end is rotatably supported on the fixed arm, and the tips of the fixed arm and the movable arm are each formed with a locking hook bent in a direction toward each other, the fixed arm and the movable arm each have a cutout hole formed to fit into the outer periphery of the single pipe, and the fixed arm is threadedly fitted with a push bolt that moves back and forth by rotation and abuts against the outer periphery of the single pipe.

[0010] The invention of claim 2 is characterized in that, in the invention of claim 1, the fixed arm has an arm portion in which the locking hook and the cutout hole are formed, and a base portion bent at a right angle from the base end of the arm portion, and the push bolt is threadedly inserted into the base portion.

[0011] The invention of claim 3 is characterized in that, in the invention of claim 1, the movable arm is provided with a stopper mechanism that restricts the rotation angle of the movable arm relative to the fixed arm. [Effects of the Invention]

[0012] According to this invention, in the connecting fixture, only the movable arm rotates relative to the fixed arm. Therefore, when connecting the joints of two temporary enclosure panels whose side edges are joined and fixing them to the single pipe, the locking hook of the fixed arm is already aligned with the engagement groove of one of the temporary enclosure panels when the connecting fixture is attached to the single pipe. Therefore, an operator can manually rotate only the movable arm to align the locking hook formed on its tip with the predetermined position (the position of the engagement groove of the temporary enclosure panel). Then, by turning the push bolt, and further turning the push bolt while its tip is abutting the outer periphery of the single pipe, the locking hooks of the fixed arm and movable arm respectively engage with the engagement grooves of each temporary enclosure panel, thereby connecting the joints of the two adjacent temporary enclosure panels with the connecting fixture and securely fixing the connecting portion to the single pipe of the support frame.

[0013] As described above, when connecting the joints of two adjacent temporary fencing panels and fixing them to a single pipe, the worker only needs to rotate the movable arm of the connecting fixture and manually adjust the position of its locking hook, thereby achieving the effect of securely connecting the joints of two adjacent temporary fencing panels with the connecting fixture and easily fixing the connecting parts to the single pipe of the support frame body with good workability. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a perspective view of a fastener according to the present invention; [Figure 2] FIG. 2 is a side view of the connecting fixture according to the present invention. [Figure 3] 1 is a plan view of a connecting fixture according to the present invention; [Figure 4] FIG. 2 is a bottom view of the connecting fixture according to the present invention; [Figure 5]FIG. 4 is a cross-sectional view taken along line AA in FIG. [Figure 6] FIG. 2 is an exploded perspective view of the connecting fixture according to the present invention; [Figure 7] A partial oblique view of the temporary enclosure from the inside. [Figure 8] This is a front view (inner view) of the temporary enclosure panel. [Figure 9] FIG. 9 is a cross-sectional view taken along line CC in FIG. 8. [Figure 10] FIG. 8 is an enlarged detailed view of part B in FIG. 7. [Figure 11] 1(a) and 1(b) are partial cross-sectional views showing the steps for connecting temporary enclosure panels using the connecting fixture of the present invention. [Figure 12] FIG. 1 is a perspective view of a conventional connecting fixture. [Figure 13] 10(a) and 10(b) are partial cross-sectional views showing the procedure for connecting and fixing temporary enclosure panels using conventional connecting fixtures. DETAILED DESCRIPTION OF THE INVENTION

[0015] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

[0016] [Connector configuration] First, the configuration of the connecting fixture according to the present invention will be described below with reference to Figures 1 to 6. Here, Figure 1 is a perspective view of the connecting fixture according to the present invention, Figure 2 is a side view of the connecting fixture, Figure 3 is a plan view of the connecting fixture, Figure 4 is a bottom view of the connecting fixture, Figure 5 is a cross-sectional view taken along line AA in Figure 3, and Figure 6 is an exploded perspective view of the connecting fixture.

[0017] 1 and 2, the connecting fixture 1 according to the present invention comprises a fixed arm 10 that is bent at a right angle into an L-shape, and a flat movable arm 20. Here, the fixed arm 10 and the movable arm 20 are made of steel plate, but the material is arbitrary, and any other material such as stainless steel plate, aluminum plate, or hard resin can also be used.

[0018] The fixed arm 10 includes an arm portion 10A and a rectangular, flat base portion 10B bent at a right angle from the base end (the left end in Fig. 2) of the arm portion 10A. A notched hole 10a is formed in the center of the arm portion 10A, as shown in Figs. 1, 4, and 6, to fit onto the outer periphery of a horizontal single pipe 31 of the support frame 30 shown in Fig. 7. Furthermore, locking hooks 10b are formed at two locations in the width direction across the notched hole 10a at the tip of the arm portion 10A, as shown in Figs. 1, 2, and 6, and are bent toward the movable arm 20.

[0019] 2 to 4, a circular screw hole 10c is formed in the center of the base portion 10B of the fixed arm 10, and a push bolt 11, which is a hexagonal bolt, is threadedly inserted into this screw hole 10c so as to be rotatable and movable forward and backward. Also, as shown in Fig. 6, locking portions 12 bent at a right angle are integrally formed at two locations in the width direction of the end portion (upper end portion in Fig. 6) of the base portion 10B of the fixed arm 10.

[0020] 1, 4 and 6, a notched hole 20a is formed in the center of the movable arm 20 to fit onto the outer periphery of the horizontal single pipe 31 of the support frame 30 shown in Fig. 7, and locking hooks 20b bent toward the fixed arm 10 are formed at two locations in the width direction of the movable arm 20 that straddle the notched hole 20a, as shown in Figs. 1, 2 and 6. Furthermore, as shown in Fig. 6, a wide rectangular hole 20c and a narrow rectangular hole 20d are formed at both ends in the width direction of the base end (the left end in Fig. 6) of the movable arm 20.

[0021] Locking portions 12 (see FIG. 6) formed at two locations in the width direction of the end (upper end in FIG. 2) of the base portion 10B of the fixed arm 10 are inserted into each of a pair of narrow rectangular holes 20d formed in the movable arm 20 (see FIG. 5). Each locking portion 12 is bent in an L-shape, and these locking portions 12 support the movable arm 20 so that it can rotate around the locking portions 12 relative to the fixed arm 10.

[0022] As described above, the movable arm 20 is supported on the fixed arm 10 so as to be rotatable around the locking portion 12, but the angle at which the movable arm 20 can rotate is restricted to the angle α shown in Figures 2 and 5 by a stopper mechanism described below.

[0023] 2 and 5, the stopper mechanism that restricts the rotation angle of the movable arm 20 relative to the fixed arm 10 to angle α shown in Fig. 2 and 5 is composed of a pair of stoppers 21 attached to two locations in the width direction of the movable arm 20. As shown in Fig. 5 and 6, each stopper 21 has an L-shaped horizontal portion 21A and a vertical portion 21B, and as shown in Fig. 6, a circular hole 21a is formed in the center of the horizontal portion 21A of each stopper 21. Note that, as shown in Fig. 6, circular holes 21b are formed in both ends of the movable arm 20 in the width direction (positions corresponding to the circular holes 21a).

[0024] Each stopper 21 is attached to the movable arm 20 by passing the vertical portion 21B through a wide rectangular hole 20c (see Figure 6) formed at both widthwise ends of the movable arm 20, bringing the horizontal portion 21A into close contact with the movable arm 20, and pressing the shaft portion 22a (see Figure 6) of the pin 22, which passes through the circular hole 21a formed in each horizontal portion 21A, into the circular hole 21b (see Figure 6) formed at both widthwise ends of the movable arm 20 (see Figure 1 to Figure 3 and Figure 5).

[0025] As described above, in the stopper mechanism including the stopper 21, as shown in FIG. 5, the base end and tip end of the vertical portion 21B of each stopper 21 selectively abut against the engaging portion 12 and the base portion 10B of the fixed arm 10, thereby restricting the rotation angle of the movable arm 20 relative to the fixed arm 10 to the angle α shown in FIGS. 2 and 5.

[0026] (Configuration of temporary fences and temporary fence panels) The temporary fence W, a portion of which is shown in Figure 7, is used to surround a construction site or the like, and is constructed by joining together multiple vertically standing temporary fence panels P (P1, P2...) (only some of which are shown in Figure 7), connecting the joints with the connecting fixture 1 of the present invention, and fixing the joints to the horizontal single pipes 31 of the support frame 30. Here, the structure of each temporary fence panel P shown in Figure 7 will be explained below with reference to Figures 8 and 9. Figure 7 is a partial oblique view of a portion of the temporary fence W seen from the inside, Figure 8 is a front view of the temporary fence panel P seen from the inside, and Figure 9 is a cross-sectional view along line CC in Figure 8.

[0027] As shown in Figure 8, each temporary fence panel P is made of, for example, a rectangular steel plate, aluminum plate, or rigid resin plate with a width B of 30 to 50 cm, a height H of 2 to 3 m, and a thickness of 1 to 1.2 mm. At one widthwise end (the right end in Figures 8 and 9) of the temporary fence panel P, an engaging protrusion p1 and an engaging groove p3 are integrally formed along the heightwise direction (the direction perpendicular to the paper surface in Figure 9), as shown in Figure 9. At the other widthwise end (the left end in Figures 8 and 9) of the temporary fence panel P, an engaging recess p2 and an engaging groove p4 are integrally formed along the heightwise direction (the direction perpendicular to the paper surface in Figure 9), as shown in Figure 9. Here, each engaging groove p3 and p4 is formed at the free end of the inwardly bent portion of both widthwise end edges of the temporary fence panel P.

[0028] (How to build a temporary fence) Next, a method for constructing a temporary fence W, part of which is shown in Fig. 7, using the connecting fixture 1 according to the present invention will be described with reference to Figs. 10 and 11, in particular a method for connecting two adjacent temporary fence panels P (P1, P2) using the connecting fixture 1 and attaching the connecting portion to the horizontal single pipe 31 of the support frame 30. Fig. 10 is an enlarged detailed view of part B in Fig. 7, and Figs. 11(a) and (b) are partial cross-sectional views showing the procedure for connecting temporary fence panels using the connecting fixture according to the present invention.

[0029] To construct the temporary fence W shown in Figure 7 that surrounds a construction site or the like, as shown in Figures 10 and 11, the mating convex portion p1 formed on the widthwise edge (right-hand edge in the figure) of one of two adjacent temporary fence panels P (left side of the figure) P1 is fitted into the mating concave portion p2 formed on the widthwise edge (left-hand edge in the figure) of the other (right side of the figure) temporary fence panel P2, and the side edges of the two temporary fence panels P1 and P2 are joined together.

[0030] As described above, once the side edges of two adjacent temporary enclosure panels P1, P2 are joined together, the joint is connected using the connecting fixture 1 of the present invention and the connecting portion is fixed to the single pipe 31 of the support frame 30. As shown in Figure 7, three single pipes 31 are horizontally installed at appropriate intervals in the height direction in the support frame 30, and Figures 10 and 11 show the connection of the joints of two adjacent temporary enclosure panels P1, P2 and the attachment structure and method to one single pipe 31 located midway in the height direction.

[0031] Here, each temporary fencing panel P (P1, P2...) is set upright so that its inner surface abuts against each single pipe 31 of the support frame 30, and the connecting fixture 1 is set in a direction such that the locking hooks 10b, 20b formed at the tip of the fixed arm 10 and the movable arm 20 face the temporary fencing panel W. That is, the connecting fixture 1 is set on the single pipe 31 by fitting the cutout holes 10a, 20a formed on the fixed arm 10 and the movable arm 20 into the outer periphery of the single pipe 31, but initially, as shown in Figure 11(a), the connecting fixture 1 is set so that the locking hook 10b at the tip of the fixed arm 10 matches the position of the engagement groove p3 of one of the temporary fencing panels P1 (left side of the figure). At this time, the movable arm 20 of the connecting fixture 1 is in an open state, and the locking hook 20b at its tip is in a position away from the engagement groove p4 of the other temporary enclosure panel P2 (on the right side of the figure). In the set state of the connecting fixture 1 shown in Figure 11(a), the tip of the push bolt 11 is in a position away from the outer surface of the single pipe 31, and the tip is not in contact with the outer periphery of the single pipe 31.

[0032] Here, in the connecting fixture 1, only the movable arm 20 rotates relative to the fixed arm 10, so when fixing the joint of two temporary fencing panels P1, P2, whose side edges are joined, to the single pipe 31, the locking hook 10b of the fixed arm 10 is already aligned with the engagement groove p3 of one of the temporary fencing panels P1 when the connecting fixture 1 is set on the single pipe 31. Therefore, as shown in Figure 11(b), an operator can manually rotate only the movable arm 20 in the direction of the arrow from the dotted line position to the solid line position, and align the locking hook 20b formed at its tip with a predetermined position (a position that matches the engagement groove p4 of the temporary fencing panel P2). Then, when the push bolt 11 is turned in the direction of the arrow in Figure 11(b), and when its tip is in contact with the outer periphery of the single pipe 31, the push bolt 11 is turned further, causing the fixed arm 10 and the movable arm 20 to be pulled in the direction of the arrow in Figure 11(b) (downward in Figure 11(b)), and each of the locking hooks 10b, 20b engages with the engagement grooves p3, p4 of each of the temporary enclosure panels P1, P2, respectively, thereby connecting the joints of the two adjacent temporary enclosure panels P1, P2 to each other, and the connecting parts are securely fixed to the single pipe 31 of the support frame body 30.

[0033] As described above, with the connecting fixture 1 of the present invention, when connecting the joints of two adjacent temporary fencing panels P1, P2 and fixing them to the single pipe 31, the worker only needs to rotate the movable arm 20 of the connecting fixture 1 from the dotted line position to the solid line position, as shown in Figure 11(b), and manually adjust the position of the locking hook 20b of the movable arm 20, so that the joints of the two adjacent temporary fencing panels P1, P2 can be easily and efficiently fixed to the single pipe 31 of the support frame body 30.

[0034] Note that the above only explains the connection of the joints of two adjacent temporary fencing panels P1 and P2 and the attachment structure and attachment method to the single pipe 31 at part B in Figure 7, but the connection of other joints of the temporary fencing panels P (P1, P2...) and attachment to the single pipe 31 can also be done using the connector 1 in the same manner as above.

[0035] Furthermore, the application of the present invention is not limited to the embodiments described above, and it goes without saying that various modifications are possible within the scope of the utility model registration claims and the technical ideas described in the specification and drawings. [Explanation of symbols]

[0036] 1 Connection fixture 10 Fixed Arm 10a Fixed arm cutout hole 10b Fixed arm locking hook 10c Screw holes on the fixed arm 11 Push Bolt 12 Locking part of fixed arm 20 Movable Arm 20a Movable arm cutout hole 20b Movable arm locking hook 21 Stopper 22-pin 30 Support frame 31 Single pipe P Temporary enclosure panel p1 Temporary enclosure panel fitting protrusion p2 Temporary enclosure panel fitting recess p3, p4 Temporary enclosure panel engagement groove W Temporary Fence

Claims

1. A connecting fixture for connecting two adjacent widthwise end edges of a plurality of temporary enclosure panels and for fixing the connecting portion of the two temporary enclosure panels to a single pipe of a support frame body, a fixed arm bent at a right angle and a movable arm whose base end is rotatably supported by the fixed arm; The fixed arm and the movable arm each have a hook at the tip thereof, the hook being bent toward each other, The fixed arm and the movable arm each have a notch hole formed therein that fits onto the outer periphery of the single pipe, A connecting fixture characterized in that a push bolt is threadedly engaged with the fixing arm and moves back and forth by rotation, and abuts against the outer periphery of the single pipe.

2. the fixed arm includes an arm portion in which the locking hook and the notch hole are formed, and a base portion bent at a right angle from a base end of the arm portion, 2. The connecting fixture according to claim 1, wherein the push bolt is threadedly inserted into the base portion.

3. 2. The connecting fixture according to claim 1, wherein the movable arm is provided with a stopper mechanism for restricting a rotation angle of the movable arm relative to the fixed arm.

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