JPH10280675A - Framed construction assembling clamp and fall preventing fence constructing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide such a clamp and a fall preventing fence constructing method as being capable of easily and quickly doing work for connecting framework member each other. SOLUTION: Two base blocks 5, 5 mutually connected via a connecting means 4 in a rotationally movable manner, opening/closing members 7, 7 with the base ends pivotally supported on hinges 6, 6 provided at one side ends of the base blocks 5, 5 to form clamps 10, 10 for clamping framework member with the base blocks 5, 5 in a removable manner and attracting buckles 11, 11 to attract the ends 8, 8 of the opening/closing members 7, 7 to the other ends 9, 9 of the base blocks 5, 5 for thrusting the framework member clamped by the clamps 10, 10 for connection. In a plane almost in parallel to the framework member clamped by one clamp 10, the framework member clamped by the other clamp 10 is relatively and rotationally moved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp for assembling a frame structure used for constructing a fall prevention fence or the like for securing work at high places such as on a roof and a fall using the same. It is related to a method of building a fence.

[0002]

2. Description of the Related Art As shown in FIG. 8, a conventional clamp (hereinafter sometimes abbreviated as "clamp") for assembling a skeleton structure of this type includes two sets of clamps 38 and 39 and a pair of clamps 38 and 39. And a rivet 40 for rotatably connecting the base blocks 38a, 39a of each other to the clamp blocks 38, 39.
And a hinge 4 at one end of the base blocks 38a, 39a.
Opening / closing blocks 38b, 39 whose base ends are pivotally supported by 1, 41
b, the other end of each of the base blocks 38a, 39a is provided with a base of a bolt 42 having a nut 43 screwed to the other end thereof.
Are provided with U-shaped notches 44 into which the shafts of the bolts 42 can be introduced from the side.

As shown in FIG. 9, the conventional method for constructing a fall prevention fence using the clamp 37 is as follows, with respect to the columns 2 erected around the roof A one by one on the ground B separately. The worker climbs on the roof A, makes the support column 2 grip one clamp portion 38 of the clamp 37, and grips the other clamp portion 39 by gripping the horizontal rail 3, and attaches the fall bar to construct a fall prevention fence. It is.

[0004]

However, in order to attach the cross beam 3 to the above-mentioned column 2 using the above-mentioned clamp 37, the nut 43 of each of the clamp portions 38, 39 of the clamp 37 attached to a plurality of places. It is necessary to perform an operation such as tightening with a ratchet wrench one by one.
As described above, since the operation of attaching the cross beam 3 to the column 2 is a dangerous operation at a high place, it is desired to perform the operation as simply and quickly as possible.

In view of the above problems, an object of the present invention is to provide a clamp for assembling a skeleton structure and a method for constructing a fall prevention fence, which can easily and quickly perform an operation of connecting frame members to each other.

[0006]

In order to achieve the above object, a clamp for assembling a frame structure according to the present invention comprises two base blocks rotatably connected to each other by connecting means, and one end of each base block. An opening / closing member whose base end is pivotally supported by a hinge portion provided at the base block and forms a gripping portion for detachably gripping the frame material with the base block, and a distal end of the opening / closing member is attached to the other end of the base block. A pull-type buckle that connects the frame material gripped by the grip portion by pressing the frame material, and in a plane substantially parallel to the frame material gripped by the one grip portion, The frame material gripped by the other grip portion is configured to rotate relatively.

According to the frame structure assembling clamp of the present invention, the two grippers, which can be opened and closed by the buckle, are rotatably connected to each other by the connecting means, and the frame material held by one of the grippers is connected to the other. Since the frame members gripped by the other grip portion are configured to rotate relatively in a substantially parallel plane, the two frame members at an arbitrary relative angle can be connected to each other by the frame members. With a simple operation such that each of the two gripping portions of the structural assembly clamp is gripped with a buckle with one touch, the two can be connected to each other, and the work of connecting the frame members to each other can be performed easily and quickly.

In the clamp for assembling a frame structure according to the present invention, if the base block is provided with a spring for pressing the frame material gripped by the gripping portion toward the opening / closing member, the gripping portion grips the frame material at the gripping portion. It is preferable because the force is increased.

According to the method for constructing a fall prevention fence of the present invention, a frame material is connected to a self-standing column which is erected around a high place using the frame structure assembling clamp according to claim 1 or 2. The horizontal beam, and two horizontal beams connected to the strut,
A skeletal structure assembling clamp according to claim 1 or 2 is connected to each other to form a fall prevention fence.

According to the method for constructing a fall prevention fence of the present invention, dangerous work at a high place where a horizontal beam is attached to a support or a horizontal beam is connected to each other can be easily and quickly performed by using a frame structure assembling clamp. Therefore, the safety of the work for constructing the fall prevention fence can be increased, which is preferable. Also,
If the horizontal rails are connected to each other at the corner part or the middle part of the fall prevention fence, the strength of the fall prevention fence increases, so that the safety of the work after the construction of the fall prevention fence can be increased, which is preferable.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 to 4, one embodiment of a clamp for assembling a frame structure according to the present invention connects two tubular frame members 3, 3 at an arbitrary relative angle.

The clamp 1 for assembling a skeleton structure includes two base blocks 5 and 5 rotatably connected to each other by a connecting means 4 including a bolt and a nut, and one end of each of the base blocks 5 and 5. Opening / closing members 7, 7 having gripping portions 10, 10 of which base ends are pivotally supported by the provided hinge portions 6, 6 and which detachably grip the frame members 3, 3 with the base blocks 5, 5. Attraction-type buckles 11, 11 are provided for attracting and connecting the distal end portions 8, 8 of the opening and closing members 7, 7 to the engaging portions 9, 9 at the other ends of the base blocks 5, 5.

The connecting means 4 comprises two base blocks 5, 5
So that the frame members 3 gripped by the other gripper 10 rotate relatively in a plane substantially parallel to the frame 3 gripped by the gripper 10. It is configured.

The base block 5 is formed of a steel plate bent in a channel shape, and a pin 6a of a hinge 6 for supporting a base end of the opening / closing member 7 is attached to one end of both walls of the channel so as to pass therethrough. At the other end of both walls, a buckle 11
A notch-shaped engaging portion 9 is provided for engaging the distal end portion 13a of the retaining member 13 of the channel. Further, an intermediate portion between both wall portions of the channel is provided.
The concave portion 5 which abuts the frame member 3 and constitutes one of the grip portions 10
a is provided.

In the channel, the connecting means 4 is provided.
Are housed so as not to interfere with the gripping portion 10.

The opening / closing member 7 is made of a substantially semicircular aluminum material, and has a semicircular surface 7
Through holes are provided at both ends of the intermediate portion having a.

The buckle 11 includes an operating lever 12 having a base end 12a pivotally supported by a distal end portion 8 of the opening / closing member 7 via a pin 14 and having a long extending operating portion 12c on the distal end side. 12 is pivotally supported at a pivot point 12b near the proximal end 12a, and the distal end 13a is
And a latching member 13 detachably engaged with the engaging portion 9 of the above, and performs the following operation.

That is, the tip 13a of the hooking member 13
Can be introduced into the grip portion 10 from the side in a state where is not engaged, and then, in a state where the operation lever 12 is open, the distal end portion 13a of the latch member 13 is engaged with the engaging portion of the base block 5. 9 (FIG. 4A). In this state, the distance between the engagement portion 9 of the base block 5 and the pivot 12b of the operation lever 12 is substantially constant.
When the operation portion 12c of the operation lever 12 is rotated in the closing direction a, the base end 12a of the operation lever 12 is pivotally connected to the pivot 12b.
The gripping portion 10 grips the framing member 3 by being rotated in the direction b with respect to the engaging portion 9 (FIG. 4B). When the operation portion 12c is further rotated in the closing direction a, the gripping force of the grip portion 10 increases, and as a reaction, a tensile force is generated between the engagement portion 9 and the pivot point 12b. This pulling force acts in the direction of pushing back the operation unit 12c first,
The operating portion 12c is further turned in the same turning direction a, and a straight line connecting the engaging portion 9 and the pivot point 12b is turned around the engaging portion 9 in the direction c, so that the base end 12a of the operating lever 12 is moved. When it crosses (FIG. 4 (c)), the above-mentioned pulling force acts on the operating portion 12c in the direction of pulling in the rotation direction a, and in this state, the operating portion 12c is not naturally pushed back. In the present embodiment, in the above state, the pulling force is applied to the operation lever 12.
The intermediate portion 12d is pressed against the outer peripheral portion of the opening and closing member 7 so that the gripping state is stabilized.

By operating the buckle 11, the frame member 3 is introduced into the grip portion 10, and the leading end 13
a is engaged with the engaging portion 9 of the base block 5, and the operating lever 1
By pushing the second operation unit 12c toward the base block 5, the lever 3 allows the frame member 3 to be gripped by the grip unit 10 with a relatively small pushing force.

Another embodiment of the frame structure assembling clamp according to the present invention, as shown in FIGS. 5 and 6, connects two tubular members 2 and 3 at an arbitrary relative angle. It is.

The frame structure assembling clamp 21 includes two base blocks 5 and 22 rotatably connected to each other by a connecting means 4, and a hinge 6 provided at one end of each of the base blocks 5 and 22. , 23, the opening and closing members 7, which form grips 10, 27 for detachably gripping the frame members 3, 2 with the base blocks 5, 22, respectively.
24 and the front end portions 8 and 25 of the opening and closing members 7 and 24 are attracted to the engaging portions 9 and 26 at the other ends of the base blocks 5 and 22, and the frame members 3 and 2 gripped by the gripping portions 10 and 27 are pressed. Buckles 11 and 28 that are connected in this manner.

The connecting means 4 comprises two base blocks 5, 2
2 so as not to be disengaged from each other, and one grip 27
The frame material 3 gripped by the other grip portion 10 is configured to rotate relatively in a plane substantially parallel to the frame material 2 gripped by the gripping member.

A spring 31 for pressing the side surface of the frame material 2 gripped by the grip portion 27 toward the opening / closing member 24 is attached to the grip portion 27 side of the connecting means 4 so as to increase the grip force. Is considered.

The other structure of the frame structure assembling clamp 21 is the same as that of the above-described frame structure assembling clamp 1, and therefore the description thereof is omitted.

When the frame structure assembling clamp 1 (22) having the above structure is used, the two frame members 3, 3 (2) at an arbitrary relative angle can be connected to each other.
(2) is introduced into the two grips 10, 10 (27) of the frame structure assembling clamp 1 (22), and the buckles 11, 1
1 (28), the front end portion 1 of the locking member 13, 13 (30)
3a, 13a (30a) to base block 5, 5 (22)
Of the operating levers 12 and 9 (26).
12 (29) can be connected to each other by a simple operation such as pushing the operation units 12c, 12c (29c) toward the base blocks 5, 5 (26), and the frame members 3, 3 (2).
Can be easily and quickly connected to each other.

Then, as shown in FIG. 7, the frame member 3 is connected to the frame member (post) 2 standing upright around a high place by using a frame structure assembling clamp 22 to be laterally connected. The bar (frame member) 3 can be used to construct a fall prevention fence. Further, as shown in FIG. 7, when the two cross rails 3 connected to the column 2 are connected to each other using the frame structure assembling clamp 1 at a corner portion or an intermediate portion of the fall prevention fence, the fall prevention can be prevented. This is preferable because the strength of the fence as a frame structure is increased.

In the above-described embodiment, a rectangular ring-shaped member is used for each of the hook members 13, 30 of the buckles 11, 28.
The present invention is not limited to this, and instead, for example, one having a hook-shaped tip may be used. Further, the base portions 13b, 30b of the latch members 13, 30 are pivotally supported by the operation levers 12, 29, respectively. Instead, the base portions 13b, 30b are pivotally supported by the base blocks 5, 26, respectively. In this case, the operating levers 12, 29 may be provided with engaging portions instead of the pivot points 12b, 29b so that the distal end portions 13a, 30a of the latch members 13, 30 can be engaged with the respective engaging portions. May be configured.

Although the operation levers 12 and 29 of the buckles 11 and 28 use substantially L-shaped members, the present invention is not limited to this.
9 may be a member in which the base ends 12a, 29a, the operation parts 12c, 29c, and the pivot points 12b, 29b are arranged in a straight line.
It is not essential that the intermediate portions 12d and 29d contact the outer peripheral portions of the opening / closing members 7 and 24.

[0030]

According to the clamp for assembling the frame structure of the present invention, the two grippers which can be opened and closed by the buckle are rotatably connected to each other by the connecting means, and are connected to the frame material held by one of the grippers. Since the frame members gripped by the other grip portion are configured to rotate relatively in a plane substantially parallel to the frame member, the two frame members at an arbitrary relative angle are separated from each other by the respective frame members. Can be connected to each other by a simple operation such as one-touch gripping with two buckles on the two holding portions of the frame structure assembling clamp, and the operation of connecting the frame members can be performed easily and quickly.

In the clamp for assembling a skeleton structure according to the present invention, if the base block is provided with a spring that presses the framing material gripped by the gripping portion toward the opening / closing member, the gripping portion grips the framing material at the gripping portion. It is preferable because the force is increased.

According to the method for constructing a fall prevention fence of the present invention, dangerous work at a high place where a horizontal beam is attached to a column or a horizontal beam is connected to each other can be easily and quickly performed using a frame structure assembling clamp. Therefore, the safety of the work for constructing the fall prevention fence can be increased, which is preferable. Also,
If the horizontal rails are connected to each other at the corner part or the middle part of the fall prevention fence, the strength of the fall prevention fence increases, so that the safety of the work after the construction of the fall prevention fence can be increased, which is preferable.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a clamp for assembling a skeleton structure according to the present invention.

FIG. 2 is a front view showing one embodiment of the frame structure assembling clamp.

FIG. 3 is a perspective view showing one use form of the clamp for assembling the frame structure.

FIGS. 4A and 4B are diagrams for explaining a gripping operation of a buckle of the clamp for assembling the frame structure, wherein FIG.
(B) is a front view showing an intermediate state following (a), and (c) is a final holding state.

FIG. 5 is a front view showing another embodiment of the frame structure assembling clamp of the present invention.

FIG. 6 is a perspective view showing one use form of the clamp for assembling the frame structure.

FIG. 7 is a schematic perspective view showing an embodiment of a fall prevention fence construction method of the present invention.

FIG. 8 is a perspective view showing a conventional example.

FIG. 9 is a schematic view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 21 Clamp for frame structure assembling 2 Strut (frame material) 3 Cross beam (frame material) 4 Connecting means 5, 22 Base block 6, 23 Hinge 7, 24 Opening member 8, 25 Tip of opening and closing member 9, 26 Engaging part (other end part) of base block 10, 27 Gripping part 11, 28 Buckle 33 Spring

Claims (3)

[Claims] 1. A frame member is detachably attached to two base blocks rotatably connected to each other by a connecting means, and hinges provided at one end of each base block, the base ends of which are pivotally supported by the base blocks. An opening / closing member forming a gripping portion that can be gripped, and a pull-on type that is connected by pulling the distal end of the opening / closing member to the other end of the base block and pressing the frame material gripped by the gripping portion. A buckle, and the frame material gripped by the other grip portion is configured to relatively rotate in a plane substantially parallel to the frame material gripped by the one grip portion. A clamp for assembling a skeleton structure, comprising: 2. The clamp for assembling a skeleton structure according to claim 1, wherein the base block includes a spring that presses the framing material gripped by the gripping portion toward the opening / closing member. 3. A frame member is connected to a self-standing column standing around a height by using the frame structure assembling clamp according to claim 1 to form a horizontal beam, and further connected to the column. A method for constructing a fall prevention fence, comprising connecting the two cross rails to each other by using the clamp for assembling a frame structure according to claim 1 or 2, thereby constructing a fall prevention fence.