JPS586998Y2 - Temporary clamp - Google Patents

Description

[Detailed description of the invention] The present invention relates to a temporary clamp used at construction sites to reliably and firmly connect pipes together to assemble scaffolding, construction frames, etc. The configuration of an example will be described in detail with reference to the accompanying drawings.

Both ends of the L-shaped holding piece 2, which has a channel-shaped cross-section and an arcuate surface a that tightly fits approximately half of the outer circumference of the pipe inside the edge, are also formed into a channel-shaped cross-section, and the remaining outer circumference of the pipe 1 is fitted inside the edge. One end of the clamping holding piece 3 having an elongated arc-shaped face, which approximately 1 of the halves is closely fitted, and one end of the clamping holding piece 4, which is closely fitted with the remaining half, are pivoted by shafts 5 and 6. One end of a bolt 8 with a nut 7 is pivotally connected by a shaft 9 between the left and right walls of the tip of the tightening holding piece 4 having one short arc-shaped face C, and the other end having a long arc face. A fitting groove 10 into which the bolt 8 is fitted is formed in the bottom wall of the tip of the tightening holding piece 3.

The drawings illustrate orthogonal clamps in which identical clamps are connected orthogonally.

A locking arc-shaped surface portion 11 is formed to lock the end of the tightening holding piece 4 on the shaft 6 side shown in the drawing to the bottom wall of the pipe 1 to prevent the tightening holding piece 4 from being tightened more than necessary. .

Since the present invention is constructed as described above, it has the following features.

1. When fixing this product to the pipe 1, when the nut 7 is tightened as shown in Fig. 3, the pipe 1 has three faces: the arc-shaped surface A, the long-arc surface, and the short-arc surface C, that is, at the center of the pipe 1. Since the pipe 1 is held from three sides around the outer periphery of the pipe 1, the pipe 1 is firmly fixed in place compared to a conventional clamp using a combination of an L-shaped holding piece and a tightening piece.

2 At this time, the arcuate surface a of the L-shaped holding piece 2 will firmly stop approximately half of the outer circumference of the pipe 1, and the long arcuate surfaces of the two tightening holding pieces 3 and 4 will Approximately half of the outer periphery of the remaining pipe 1 is tightened by the short arc-shaped surface C, and the pipe 1 is securely fixed firmly by these three members.

In this case, if the pipe 1 has a small diameter, the clamping holding piece 4 will be tightened and pulled toward the L-shaped holding piece 2 more than necessary, so that the shaft 6 of the L-shaped holding piece 2 will be positioned. The left and right walls are stretched and forced to bend or deform, resulting in poor tightening.

In this regard, in the present invention, the locking arc-shaped surface portion 11 is formed at the end of the shaft 6 of the tightening holding piece 4, so that the locking arc-shaped surface portion 11 abuts and locks against the bottom wall of the L-shaped holding piece 2. Since the end portion of the shaft 6 of the L-shaped holding piece 2 is not pulled more than necessary, the end portion of the shaft 6 of the L-shaped holding piece 2 is not bent or deformed.

3 Furthermore, since the pipe 1 is held by the three surfaces of the arcuate surface a, the long arcuate surface, and the short arcuate surface C, even if the outer diameter of the pipe 1 changes, the long arcuate surface and the short arcuate surface C will hold the pipe 1. Since it is tightly fastened along the outer circumferential surface, it can sufficiently cope with changes in diameter, and even pipes 1 of different sizes can be fastened.

4 Furthermore, since the L-shaped holding piece 2 and the tightening holding pieces 3 and 4 have a channel-shaped cross section, a large section modulus can be obtained, and they can withstand sufficiently large tightening force and external force. It turns out.

5. Also, since it can be mass-produced by pressing, etc., the product can be manufactured at a lower cost.

As described above, according to the present invention, at construction sites etc.
This has an excellent practical effect in that it can connect pipes to form a reliable and strong scaffolding or construction frame.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the orthogonal clamp, FIG. 2 is an exploded perspective view of the single clamp, and FIG. 3 is a front sectional view of the single clamp. 1...Pipe, 2...L-shaped holding piece,
3, 4...Tightening holding piece, 5, 6...Shaft, 7...Nut, 8...Bolt, 9.
...Shaft, 10...Fitting groove, 11...
... Locking arcuate surface part, a... Arcuate surface, b...
... Long arc-shaped surface, C... Short arc-shaped surface.

Claims (1)

[Scope of utility model registration request] Both ends of the L-shaped holding piece 2, which has a channel-shaped cross-section and has an arcuate surface a that tightly fits approximately half of the outer circumference of the pipe 1 inside the edge, have a channel-shaped cross-section at both ends, and the remaining outer circumference of the pipe 1 is placed inside the edge. A tightening holding piece 3 having a long arc-shaped face that closely fits approximately half of the holding piece 3, and a tightening holding piece 4 having a short arc-shaped face C that tightly fits approximately half of the holding piece 3. One end of the shaft 5,
One end of a bolt 8 with a nut 7 is pivoted between the left and right walls of the tip of the tightening holding piece 4, which has one short arc-shaped surface C, and which has one short arc-shaped surface C. A fitting groove 10 into which the bolt 8 is fitted is formed in the bottom wall of the tip of the tightening holding piece 3 having a short arc-shaped surface C, and the end on the shaft 6 side of the tightening holding piece 4 has a short arc-shaped surface C. A temporary clamp characterized in that a locking arc-shaped surface portion 11 that abuts and locks against the bottom wall of the L-shaped holding piece 2 is formed on the portion thereof.