JPS6212891Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a flexible steel pipe clamp used for gripping and joining two steel pipes.

When assembling temporary structures such as scaffolding and handrails using steel pipes, the intersections and parallel parts of the steel pipes are connected using clamps, but there are many places where orthogonal or parallel connections are made, so it is difficult to use orthogonal structures. If two types of dedicated clamps for parallel use are used, there are many types of clamps, and management becomes troublesome, and the work to use them properly is also complicated. It is convenient to use a clamp.

By the way, various types of flexible clamps that can be used both orthogonally and parallelly have been proposed, but all of them have complicated structures, and in particular, the operation to fix the clamp rotation part is troublesome, and the fixation is unstable. There is a problem.

This invention was made to solve the above-mentioned problems, and the purpose is to provide a flexible steel pipe clamp that has a simple structure and can reliably fix the rotating part.

The structure of this device is that two clamps are placed back to back and are rotatably connected, one clamp has a hooking hole on the back, and the other clamp has a lock on the side that allows it to be hooked into and removed from the hooking hole. A metal fitting is attached, and this locking metal fitting is restrained by a steel pipe held by the other clamp, so that the engagement between the locking metal fitting and the engagement hole is firmly maintained.

This invention will be explained below based on the embodiments shown in the accompanying drawings.

As shown in the figure, a pair of clamp units 1 and 2 are arranged back to back and are rotatably connected by a pivot fitting 3 that passes through the back to back parts.

Since the two clamp units 1 and 2 have the same structure, the same parts will be described with the same reference numerals.

The single clamps 1 and 2 have a U-shaped cross section, and have a back member 6 with arc-shaped steel pipe support edges 5 on opposing walls 4, 4 on both sides, and opposing walls 4, 4 on both ends of this back member 6, respectively. A pair of tightening bands 8, 9 attached using supported shafts 7, 7, and one tightening band 8
Both tightening bands 8 and 9 have arcuate edges 11 and 12 that contact the outer peripheral surface of the steel pipe A, and the bolt 10 fits into the tip of the other tightening band 9. A notch 13 is provided.

The back members 6 of the single clamps 1 and 2 are formed in a horizontally long rectangular shape, and their overlapping centers are joined by a pivot fitting 3, so that when the steel pipe A is clamped in an orthogonal state, both ends thereof are separated from the overlapping part. They are starting to stand out from each other.

Engagement holes 14 are provided near both ends of the back member 6 of one clamp unit 1 at positions exposed from the other clamp unit 2 in the orthogonal state, and the engagement holes 14 are provided on both sides of the back member 6 of the other clamp unit 2 A lock fitting 16 is attached to which the tip of the toe 15 can be hooked and removed.

The lock fitting 16 is attached to the end of a shaft 7 protruding from the back member 6 of the clamp unit 2, and by rotation about the shaft 7, the claw 15 engages and disengages from the engagement hole 14.

As shown in FIG.
5 is engaged with the engagement hole 14, its outer edge is formed into an arc-shaped steel pipe contact edge 17 that matches the arc-shaped support edge 5 of the back member 6, and the steel pipe A is clamped orthogonally with both clamps 1 and 2. At this time, it is pressed down by the steel pipe A of the clamp unit 2, and the engagement state with the engagement hole 14 is maintained, and the orthogonal arrangement of the clamp units 1 and 2 is fixed.

In the illustrated case, the lock fittings 16 are attached to both sides of the clamp unit 2, but they may be provided only to one side.

The clamp of this invention has the above structure, and when clamping a steel pipe orthogonally, the two clamps 1 and 2 are arranged at right angles as shown in the figure, and the locking fitting 16 is engaged with the engagement hole 14. By the way,
Both clamp units 1 and 2 are fixed, and the engagement between the lock fitting 16 and the engagement hole 14 is maintained by the steel pipe A.

Also, when clamping steel pipes in parallel,
It is sufficient to remove the lock fitting 16 from the engagement hole 14 and rotate both clamp units 1 and 2 so as to be parallel to each other. In this case, the lock fitting 16 may be left in a free state.

As described above, according to this invention, a pair of clamps are rotatably connected back to back, a hooking hole is provided on the back of one clamp, and a hooking hole is provided on the side of the other clamp. A locking fitting that can be removed is attached, and the clamped steel pipe is used to press the locking fitting to maintain engagement with the engagement hole, so that clamps that are perpendicular to the steel pipe and those that are parallel to the steel pipe can be used selectively by simply operating the locking fitting. In addition to being extremely easy to use, the clamped steel pipe can maintain the engagement between the lock fitting and the engagement hole, thereby stabilizing the orthogonal clamping state.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the clamp according to this invention, FIG. 2 is a front view of the same, and FIG. 3 is a side view of the same. 1, 2...Clamp alone, 3...Pivot fitting, 6
... Back member, 14 ... Engagement hole, 15 ... Toe,
16...Lock fitting.

Claims (1)

[Scope of utility model registration request] Two clamps arranged back to back are rotatably connected by a pivot fitting that passes through the back-to-back parts, and a hooking hole is provided in the back of one clamp, and a hook hole is provided in the side of the other clamp. A flexible steel pipe clamp in which a locking pawl that engages and disengages from the locking hole is attached to the clamp, and the locking pawl abuts against the pipe gripped by the other clamp alone to maintain engagement with the locking hole.