JP2813560B2 - Double clamp for universal use - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double clamp for fastening an iron pipe, comprising two sets of clamps for holding a scaffold for assembling a scaffold at a construction site, which are connected to each other back to back, and in particular, to a freely rotatable clamp. The present invention relates to a two-way clamp that can be used by freely selecting and setting a mold and an orthogonal mold.

[0002]

2. Description of the Related Art A double clamp has been widely used in the past, and its basic structure is such that two substantially semicircular gripping bodies are made to correspond to each other so as to form an O shape. And these two are held in one gripper (“fixed gripper”).
Called. ) Are connected back to back, and the other gripping body (referred to as a “movable gripping body”) is rotated in the shape of an openable leg, and the fixed gripping body and the movable gripping body are fastened at their ends by fastening bolts. It is configured to be appropriately tightened. Then, each clamp is attached and fixed so as to be sandwiched between the fixed gripper and the movable gripper of the two iron pipes that intersect at right angles or at an angle.
The steel pipes are fastened and held in a crossed state.

[0003] The double clamp is roughly classified into a so-called "orthogonal type" in which the connection is fixed so that two iron pipes are fastened in a state of crossing at right angles, and an appropriate type other than right angle. There is a so-called "free type" in which the connection is rotatable so that the connection is made at an intersection angle.

Conventionally, since these are manufactured separately, it is necessary to prepare and prepare two types of double clamps on the site in consideration of the purpose of use, and the management thereof has been complicated.

[0005] In recent years, for the purpose of eliminating this complication, a single double clamp that has been used as both an orthogonal type and a universal type has been marketed. As shown in an overall perspective view in FIG. 16, this is constituted by two clamps a and b so as to be freely movable, and a plate-like protruding outwardly on the outer side of the fixed gripping body c of one clamp a. And a substantially U-shaped fitting piece e fitted to the tongue piece d is rotatable around a rotating shaft g supporting the fastening bolt f of the other clamp b. It was of the configuration attached to.

With this configuration, the fitting piece e is used as an orthogonal type when the fitting piece e is rotated (arrow x) and fitted to the tongue piece d, and as a free type when removed from the tongue piece d. Was.

[0007]

However, the conventional example has various problems. That is, in an actual construction site, the clamp is often thrown away and handled roughly, and the fitting piece e often comes off the tongue piece d. Since the proportion of the double clamp used as the orthogonal type is high, the one in which the fitting piece e is detached becomes a free type, so it is necessary to fit the tongue piece d one by one, which is very troublesome in the field. Had become something. In particular, the operation was difficult due to the use of thick gloves.

Further, since the fitting portion including the tongue piece d and the fitting piece e is disposed on the outer side of the clamps a and b, when attached, fresh concrete or concrete pieces may adhere and harden. There was also. The clamp a thus configured is a troublesome work in repairing and cleaning for reuse, which is inconvenient in terms of maintenance.

Furthermore, since the tongue piece d and the fitting piece e formed as separate members are attached to the conventional double clamp by welding or the like later, a new work process is added to the conventional one. However, there is a problem that the manufacturing cycle time and the production cost are necessarily increased.

Accordingly, the present invention has been made in view of such a problem, and an object thereof is to provide a fitting means not on the outside but on the inside of the clamp.
An object of the present invention is to provide a dual clamp that can be used for both orthogonal and flexible purposes with a simple and reliable structure and a configuration that is easy to maintain.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a clamp of a mechanism for fastening and fixing a rod-like body by gripping a rod-like body with a movable semi-circularly movable movable body and a fixed gripper. Two fixed clamps are arranged in a back-to-back relationship with each other at the bottoms of the fixed clamps, and the two clamps are rotatably connected to each other. It is provided with a fixing means capable of appropriately fixing at a position where the gripping direction is orthogonal ,

The fixing means opens one or more fitting holes which are adapted to communicate with each other at the positions where the gripping directions of the clamps are orthogonal to each other at the bottoms of the connected fixed gripping bodies. The movable body in which the fitting pins that fit and disengage with
A structure that is provided movably inside the fixed gripper on one side
And

The connection between the two clamps is performed by a connecting pin disposed through the connecting pin. One end of the connecting pin is fixed to a fixed holding body on one side and a connection exposed to the inside of the fixed holding body on the other side. A fitting receiving portion is formed at one end of the pin, and a movable body that fits into and disengages from the fitting receiving portion at an orthogonal position is provided movably inside the fixed holding body on the other side ,
In addition, the movable body has a spring
It is configured to be held by power.

In another configuration of the fixing means, the connection of the two clamps is performed by a connecting pin disposed through the connecting pin, and the sectional shape of the shank portion of the connecting pin is gradually changed into a rectangular portion and a circular portion. And the through-hole at the bottom of one fixed gripper through which the connecting pin passes is formed in a shape conforming to the rectangular portion, and the through-hole at the bottom of the fixed gripper on the other side is circular. It is formed into a shape that fits the part, and the overlapped bottom is attached to the connection pin so as to be clamped by a spring means, and the bottom on one side is appropriately moved between the rectangular part and the circular part of the shank part. In this manner, the rotation state or the fixed state may be set.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the drawings, taking the following three examples.

[0016]

Embodiment 1 First, a first embodiment will be described. FIGS. 1 to 7 show the first embodiment, and FIG. 1 is a perspective view showing a main part, which is set to be a free type. 2 to 4 are a plan view, a cross-sectional view taken along line AA, and a cross-sectional view taken along line BB at that time, respectively. Further, FIGS. 5 to 7 are plan views showing a state where the orthogonal type is set, and FIG.
FIG. 2 shows a cross-sectional view taken along a line C and a line D-D.

That is, the fixing means of the first embodiment includes:
Opening holes 1h and 2h which are adapted to communicate with each other are opened substantially at the center of the bottoms 1b and 2b of the fixed holding bodies 1 and 2 and the connecting pin 3 is inserted through the through holes 1h and 2h.
Is installed. The connecting pin 3 is formed of a bolt and nut mechanism, and is fastened to such an extent that the fixed holding bodies 1 and 2 can rotate freely.

On both sides of the through holes 1h, 2h, fitting holes 4a, 4b, 5a, 5b are formed to penetrate. The fitting hole 4 of the upper fixed holding body 1 (on the drawing)
a, 4b and fitting holes 5 of the lower (on the drawing) fixed gripping body 2
a and 5b are formed so as to penetrate when the gripping direction (length direction of the gripped iron pipe) of each clamp is orthogonal.

Inside the upper fixed holding body 1, there is disposed a substantially rectangular movable plate 6 having a substantially rectangular outline having a contour substantially corresponding to the width of the bottom 1b and having an open center. The movable plate 6 is rotatably supported, and is urged such that a free end of a leaf spring 8 supported in a cantilever shape by a pin 7 is engaged with one end piece thereof. ing. The urging force allows the movable plate 6 to be held in a state in which it is in contact with the bottom 1b and in a state in which it is in contact with the side inner surface 1s perpendicular to the bottom 1b.

The movable plate 6 has a fitting pin 9 at a position corresponding to the fitting holes 4a and 4b when the movable plate 6 is in contact with the bottom 1b.
However, it is implanted and fixed to a length that can penetrate the two fitted fitting holes 4 and 5.

[0021]

Operation of Embodiment 1 With this configuration, first, the movable plate 6
1 is pressed against the side inner surface 1s, it functions as a free-form double clamp. Then, when setting to the orthogonal type next, the fixed holding bodies 1 and 2 are rotated in the orthogonal state so that the respective fitting holes 4 and 5 are aligned. In this state, when the movable plate 6 is tilted down to the bottom 1b side against the urging force of the leaf spring 8 using a hand or an instrument such as a ratchet wrench, the movable plate 6 is pushed down by the urging force of the leaf spring 8 in reverse. , 2
The fitting pins 9 are fitted into the corresponding fitting holes 4 and 5, respectively, and are fixed (locked). As a result, the two connected clamps are prevented from rotating, and thereafter function as an orthogonal double clamp.

In order to return to the free type, the movable plate 6 is raised in the opposite manner as described above and pressed against the inner side surface 1s to be held.

[0023]

Embodiment 2 Next, a second embodiment will be described. FIGS. 8 to 13 show the second embodiment. FIG. 8 is a perspective view showing a main part, which is set to be orthogonal, and FIGS. 9 to 11 are plan views at that time. , EE, and FF, respectively. FIGS. 12 and 13 are a plan view and a GG, respectively, in a freely set state. is there.

That is, the fixing means of the second embodiment is as follows.
As in the first embodiment, through holes 11h and 12h that are adapted to communicate with each other are opened substantially at the center of the bottoms 11b and 12b of the fixed grippers 11 and 12 and the through holes 11h and 12h.
The connection pin 13 is attached so as to penetrate through h.

The connecting pin 13 is constituted by a bolt and nut mechanism, and the bolt 14 is penetrated from the bottom 12b side of the lower (on the drawing) fixed holding body 12 so as to penetrate upward, and the upper (on the drawing) fixed holding. At the tip exposed on the body 11 side,
The nut 15 is attached. The flange 14f of the bolt 14 is fixed to the bottom 12b of the lower fixed holding body 12. The nut 15 is formed in a rectangular shape, and each side thereof is connected to the bottom 11 of the upper fixed gripping body 11 in the orthogonal state.
It is positioned along the periphery of b. The fixed pins 11 and 12 are fastened by the connecting pin 13 to such an extent that they can be freely rotated.

In the structure of the connecting pin 13, the nut 15 is formed in a rectangular shape.
May be formed in a rectangular shape and arranged so as to penetrate downward from the upper fixed gripping body 11. Further, the flange 14f is fixed to the fixed gripping body by welding or the like.
The shank portion near the 4f attachment may be formed in a rectangular shape, and the through hole formed in one bottom portion to be fitted with the shank portion may be formed in a rectangular shape.

Next, a substantially U-shaped movable plate 16 fitted to the rectangular nut 15 is provided inside the upper fixed holding body 1.
Is arranged. The shape of the movable plate 16 is such that the outer contour substantially matches the inner shape of the bottom 1b, and the inner contour is the nut 15
Is substantially matched to the outer shape. One end of the movable plate 16 is movably supported by a biasing force by a leaf spring 18 supported in a cantilever manner by pins 17 as in the first embodiment.

The form of the movable plate 16 of the second embodiment is as follows.
Although it is formed in a substantially U-shape, it may be formed in a substantially U-shape similarly to the first embodiment. Conversely, the movable plate 6 of the first embodiment may be formed in a substantially U-shape as in the second embodiment. However, in order to secure the strength, the movable plates 6 and 16 are
It is preferable that the shape be substantially rectangular.

[0029]

Operation of Embodiment 2 With this configuration, first, the movable plate 1
In the state of FIGS. 12 and 13 in which 6 is pressed against the side inner surface 11 s, it functions as a free-form double clamp. Then, when setting to the orthogonal type next, each fixed gripping body 11,
When the movable plate 16 is turned to the orthogonal state, and the movable plate 16 is tilted in the direction of the bottom 11b against the urging force of the plate spring 18 by hand or using an instrument such as a ratchet wrench, the plate spring The movable plate 16 is pushed down by the urging force of 18, and the inner contour of the movable plate 16 is fitted and fixed (locked) by the nut 15. Thereby, the flange 14 of the connecting pin 13
f is fixed to the lower fixed gripper 12 and the nut 15
The outer contour of the movable plate 16 fitted on the inner surface of the movable plate 16 is in contact with the inside of the bottom 11b of the upper fixed gripping body 11, so that the rotation is prevented. As a result, the two connected clamps are prevented from rotating, and thereafter function as an orthogonal double clamp.

In order to return to the free type, the movable plate 6 may be raised in the opposite manner as described above and pressed against the side inner surface 1s to be held.

[0031]

Embodiment 3 Next, a third embodiment will be described. 14 and 15 show the third embodiment. FIG. 14 is a longitudinal sectional view showing a fixing means, and FIG. 15 is an exploded perspective view showing a main part.

That is, the fixing means of the third embodiment is as follows.
As in the first and second embodiments, the fixed holding bodies 21 and 2
A connecting pin 23 is attached to a substantially central portion of the bottoms 21b and 22b of the second through through holes 21h and 22h communicating with each other.

The shapes of the through holes 21h and 22h are different from those of the first and second embodiments. That is, the lower (on the drawing) through-hole 22h is formed in a rectangular shape (“square” in the present embodiment), and the upper (on the drawing) through-hole 21h is circular in shape and the pair of opposing positions has the rectangular shape. The opening is formed in a shape (here, abbreviated as “leaf shape”) to which a corner portion coincident with the corner portion is added.

The connecting pin 23 comprises a bolt 24 and a nut 25
And a bolt and nut mechanism. The shank portion 26 of the bolt 24 is formed into a rectangular shape 26a that fits through the through hole 22h from the flange 24f side, and a continuous upper portion is formed into a leaf shape 26b that fits through the through hole 21h. A continuous upper part is formed into a columnar shape 26c, and a helical screw is engraved at the tip part.
Are formed in stages. The length of the rectangular shank portion 26 a (hereinafter, “rectangular shank portion”) is set to be longer than the thickness of the bottom portion 22 b of the lower fixed holding body 22. The length of the leaf-shaped shank portion 26b (hereinafter, “leaf-shaped shank portion”) is the length of the bottom portion 21 of the upper fixed gripping body 21.
The length is set to be substantially the same as the thickness of b. Further, the length of the cylindrical shank portion 26c (hereinafter, "circular shank portion") is set to be longer than the thickness of the bottom portion 22b. In addition, a triangular peak-shaped ridge 27 is formed on the tip end surface (upper end surface) of the bolt 24. The height of the ridge 27 is such that when the iron pipe 28 is adapted to the upper fixed holding body 21,
The height of the iron pipe 28 is set so that the side surface thereof touches.

In the connecting pin 23, a wavy ring spring 29 is disposed between the flange 24f and the lower bottom 22b, and another ring spring 30 is disposed between the nut 25 and the upper bottom 21b. I have. The urging force of the upper ring spring 30 is set stronger than that of the lower ring spring 29.

[0036]

According to the structure of the third embodiment, first, the connecting nut 23 is fastened to the connecting pin 23 with the mounting nut 25 in the order shown in FIG. In this fastened state, as shown in FIG. 14, the lower bottom portion 22b is located at the rectangular shank portion 26a, and the upper bottom portion 21b is located at the leaf-shaped shank portion 26b due to the balance between the upper and lower ring springs 29, 30. Will be.
In this state, the clamp is prevented from rotating by engaging with the corner portion of the shank portion, and the clamp becomes an orthogonal type.

Next, in the case of the free type, when the lower bottom portion 22b is forcibly pulled downward (on the drawing) by hand or the like, the upper ring spring 30 is bent and the lower ring spring 29 is bent.
, The upper bottom portion 21b is moved toward the circular shank portion 26c. As a result, the lower bottom portion 21b is rotatable, and the clamps are rotatable, thereby functioning as a free type.

The operation can be easily performed with one hand by bringing the convex 27 into contact with the iron pipe 28.

[0039]

The present invention is constructed as described above, so that one double clamp can be easily changed to the orthogonal type and the free type by operating the fixing means provided inside the fixed holding body of the free type clamp. And can be used by switching. Therefore, it is not necessary to prepare two types as in the past, and it is possible to cope with most iron pipe assembly with only the double clamp according to the present invention. Therefore, there is an advantage that management at the construction site becomes easy.

Also, since the fixing means is provided inside,
When the iron pipe is attached, that part is hidden, and it is possible to avoid the adhesion of fresh concrete and dust. This has the effect of facilitating the repair and cleaning work for reuse of the clamp.

Further, since the fixing means is a fitting means utilizing a spring biasing force, it is possible to ensure that the fixing means does not easily come off even in a field where it is often handled violently.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a main part of a first embodiment and showing a state where it is set to a free type.

FIG. 2 is a plan view showing a main part of the first embodiment.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a sectional view taken along line BB of FIG. 2;

FIG. 5 is a plan view showing a main part of the first embodiment in a state where it is set to be orthogonal.

FIG. 6 is a sectional view taken along the line CC of FIG. 5;

FIG. 7 is a sectional view taken along line DD of FIG. 5;

FIG. 8 is a perspective view showing a main part of the second embodiment and showing a state where it is set to be an orthogonal type.

FIG. 9 is a plan view showing a main part of the second embodiment.

FIG. 10 is a sectional view taken along line EE of FIG. 9;

FIG. 11 is a sectional view taken along line FF of FIG. 9;

FIG. 12 is a plan view showing a main part of the second embodiment and showing a state where it is set to a free type.

FIG. 13 is a sectional view taken along line GG of FIG.

FIG. 14 is a longitudinal sectional view showing a main part of a third embodiment.

FIG. 15 is an exploded perspective view showing a main part of the third embodiment.

FIG. 16 is an overall perspective view showing a conventional example.

[Explanation of symbols]

 1, 2 ... fixed gripping body 1b, 2b ... bottom 1h, 2h ... through hole 3 ... connecting pin 4, 5 ... fitting hole 6 ... movable plate 7 ... pin 8 ... leaf spring 9 ... fitting pin 11, 12 ... fixed gripping body 11b, 12b ... bottom part 11h, 12h ... through hole 13 ... connecting pin 14 ... bolt 14f ... flange 15 ... nut 16・ ・ Movable plate 17 ・ Pin 18 ・ ・ Leaf spring 21 ・ 22 ・ ・ Fixed gripping body 21b, 22b ・ ・ Bottom 21h, 22h ・ ・ Through hole 23 ・ ・ Connection pin 24 ・ ・ Bolt 24f ・ Flange 25 ・ ・ Nut 26 ・ ・ Shank part 27 ・ ・ Convex 28 ・ ・ Iron pipe 29、30 ・ ・ Ring spring

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Yoji Konuma 2-12-7 Kamimaezu, Naka-ku, Nagoya City, Aichi Prefecture Toyo Kiki Kogyo Co., Ltd. (56) References JP-A-6-272372 (JP, A) Kaihei 6-264612 (JP, A) (58) Field surveyed (Int. Cl. ⁶ , DB name) E04G 7/06

Claims (3)

(57) [Claims] 1. A clamp of a mechanism for fastening and fixing a rod-shaped body by gripping a rod-like body with a movable gripper and a fixed gripper having a substantially semicircular shape, and the bottoms of the fixed grippers are back-to-back. In the universal double clamp which is rotatably connected to each other, the bottoms (1) of the connected fixed grippers (1, 2)
b, 2b), one or two or more fitting holes (4, 5) that are adapted to communicate with each other at positions where the gripping directions of the clamps are orthogonal to each other are opened, and fitting and disengaging from the fitting holes (4, 5) are performed. The movable body (6) on which the fitting pin (9) is implanted is fixed to one of the fixed grippers (1,
Or, a double clamp which can be freely used at right angles, which is movably provided inside 2). 2. A clamp of a mechanism for fastening and fixing a rod-like body by gripping a rod-like body with a movable gripper having a substantially semicircular curved shape and a fixed gripper, wherein the bottoms of the fixed grippers are back-to-back with each other. And a rotatable two-way clamp, which is rotatably connected to a connecting pin (1) penetrating through the connection of the two clamps.
3), one end of the connecting pin (13) is fixed to the fixed holding body (12) on one side, and one end of the connecting pin (13) exposed inside the fixed holding body (11) on the other side. And a movable body (16) which is fitted and disengaged from the fitting receiving part (15) at an orthogonal position is movable inside the fixed holding body (11) on the other side. A two-way clamp which can be used at any time, and is provided so as to be capable of being held by a spring biasing force at the time of fitting and at the time of disengagement. 3. A clamp having a mechanism for fastening and fixing a rod-like body by gripping a rod-like body with a movable gripper and a fixed gripper having a substantially semicircular curved shape, wherein the bottoms of the fixed grippers are back-to-back. And a rotatable two-way clamp, which is rotatably connected to a connecting pin (2) penetrating through the connection of the two clamps.
3), the sectional shape of the shank portion (26) of the connecting pin (23) is changed to a rectangular portion (26b) and a circular portion (26).
c) and one fixed gripper (2) through which the connecting pin (23) penetrates.
The through hole (22h) in the bottom portion (22b) of (2) is formed in a shape conforming to the rectangular portion, and the fixed gripper (2) on the other side is formed.
The through hole (21h) of the bottom part (21b) of (1) is formed in a shape adapted to the circular part (26c), and the overlapped bottom parts (21b, 22b) are formed by spring means (29,
30) so as to be clamped by the connecting pin (23), and the bottom (21b) on one side is fixed to the shank (2).
6) A dual-purpose dual-purpose clamp, wherein the clamp is rotated or fixed by appropriately moving between the rectangular portion (26b) and the circular portion (26c).