JP2011026816A - Pipe connecting clamp - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To overcome the following problems: a conventional clamp fitting for connecting pipe materials together increases the labor and cost of manufacture because a stopper is separately and swingably provided to fix two pipes at a predetermined angle and connect them together; and the provision of a new component not only makes handling cumbersome but also is apt to cause breakage or failure in use on a job site. <P>SOLUTION: In a pair of clamps for fixing the pipe by tightening a movable portion by means of a nut screwed to a bolt turnably provided in a fixed portion, the fixed portions are turnably connected together by means of a connector. The connector is turnably provided in the fixed portion of each clamp, and formed of the fixed portion and the movable portion; and both ends face a pipe movement inhibiting space in a state in which the pipe is tightened. Otherwise, one end of the connector is fixed to the fixed portion of the one clamp; and the other end thereof is formed of the fixed portion and movable portion of the other clamp, and faces the pipe movement inhibiting space in the state in which the pipe is tightened. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The present invention relates to an improvement in a clamp for fixing and connecting two pipes at a predetermined angle when assembling a scaffolding or the like at a construction site.

  Conventionally, there are various structures of clamps for connecting two pipes. In general, it is composed of a fixed portion and a movable portion that is rotatably connected to the fixed portion, and the movable portion is tightened with a nut that is screwed to the fixed portion so as to be rotatable. Fixing clamps are widely used. Two such clamps are connected to each other and the two pipes are connected by fixing the pipes with the respective clamps.

The two clamps are connected in a rotatable manner or in a fixed manner at 90 °. Moreover, as shown in Patent Document 1, there is a structure that can be connected and fixed at a predetermined arbitrary angle. The clamp fitting for connecting a pipe shown in Patent Document 1 has a structure in which a stopper that prevents the rotation of the clamps is swingably attached to one of the clamps, and an engaging portion that engages with the stopper is provided on the other clamp. It is said. When the pipe is tightened, the stopper moves slightly with tightening, engages with the engaging portion, and is fixed at a predetermined angle.

JP-A-8-128194

In order to connect two pipes fixed at a predetermined angle, such as the above-described clamp fitting for pipe connection, it is necessary to separately provide a stopper so as to be able to swing, and it takes time and cost for manufacturing. There was a problem. In addition, when new parts are provided, not only the handling becomes complicated, but there is also a problem that it is liable to cause damage or failure when used in the field.

  Therefore, as a result of diligent research in view of the above problems, the present inventor has achieved the present invention. The feature of the present inventor is to connect two pipes at an arbitrary angle. A pair of a fixed part and a movable part connected to the fixed part so as to be rotatable, and the pipe is fixed by tightening the movable part with a nut screwed to a bolt provided rotatably on the fixed part. The clamp is configured such that the fixed parts are connected to each other by a connecting tool, and the connecting tool is rotatably provided to the fixing part of each clamp, and the pipe is formed by the fixed part and the movable part. Both ends were exposed to the pipe clamping space when it was fastened and fixed.

  Alternatively, it is intended to connect two pipes at an arbitrary angle, and is composed of a fixed portion and a movable portion that is rotatably connected to the fixed portion, and is provided rotatably on the fixed portion. A pair of clamps that fasten the movable part with a nut screwed to a bolt and fix the pipe, and the fixed parts are connected to each other by a connecting tool. It is fixed to the fixed part of the clamp, and the other end is formed by the fixed part of the other clamp and the movable part, and faces the pipe holding space in a state where the pipe is fastened and fixed.

  Here, the “connector” referred to in the present specification refers to a member that connects two clamps so that the fixed portions are rotatable. In this regard, it is the same as a conventional clamp for connecting pipes in which two clamps are rotatably connected. However, in the present invention, at least one end of the coupler is positioned in a state where the pipe is clamped by the clamps. It is a feature that the connecting tool bears the fixing of the pipe by facing the pipe movement prevention space.

  In order to fix two pipes at a predetermined angle by fixing the pipe with a connecting tool, when the connecting tool is provided so as to be rotatable with respect to each clamp, the end on the fixing part side of each clamp is respectively set. Let it face the pipe movement prevention space. In addition, when one end of the coupler is fixed to one of the clamps and the other end is rotatably provided to the other clamp, only the end on the other end needs to face the pipe movement prevention space.

Fixing the pipe with the connector by having the end of the connector facing the pipe movement prevention space does not necessarily fix the pipe with the connector alone, but the two pipes rotate relative to each other. You may just prevent it. For example, it is a case where the groove | channel which a pipe fits in in the end surface of a connection tool is provided. In this case, the pipe is fixed by the fixed portion of the clamp and the pipe support portion of the movable portion, and the mutual rotation of the pipe is prevented by the groove. In other words, facing the pipe movement prevention space means that the pipe is prevented from moving from a fixed state by positioning a connector around the pipe itself or its periphery.

Since the pipe connection clamp according to the present invention has the same structure as a conventional connection clamp in which two clamps are connected in a rotatable manner, the pipe connection clamp can be provided at low cost with little cost. In addition, since there is no special part such as a stopper, it is hardly damaged by rough handling at the site, and the function that can be connected and fixed at an arbitrary angle is hardly lost, and reuse is repeated. Has a very beneficial effect such as being able to maintain stable quality.

It is a front view which shows one Example of the pipe connection clamp which concerns on this invention. Example 1 It is a perspective view which shows an example of the coupling tool in the pipe connection clamp which concerns on this invention. (A) (b) is a front view which shows the other Example of a coupling tool, respectively. (Example 2) It is a front view which shows the further another Example of a coupling tool. Example 3 It is a front view which shows the other Example of the pipe connection clamp which concerns on this invention. (Example 4)

In the pipe connection clamp according to the present invention, both end portions of a connecting tool for connecting the two clamps in a rotatable manner are allowed to face the pipe movement prevention space in a state where the pipe is tightened by the clamp. Or the said subject was solved by making one end of a connection tool face pipe movement prevention space, and fixing an other end.

  FIG. 1 shows an embodiment of a pipe connection clamp 1 according to the present invention, which has a structure in which two clamps C are rotatably connected by a connector 2. This connecting tool 2 is rotatably connected to the fixing part C1 of each clamp C, and both end parts thereof face the pipe movement preventing space 3, respectively. Thereby, when the movable part C2 is fastened with the nut N screwed to the bolt B provided rotatably on the fixed part C1, the pipe P is fastened to the end of the connector 2. By tightening the pipe P with each clamp C, the two pipes P are fixed via the connector 2 and can be held at an arbitrary angle.

As the connector 2, for example, two members shown in FIG. 2 are fitted into the openings of the fixing portions C1 of the two clamps C and fixed by welding. In this example, in order to make it difficult to slip with respect to the bottom surface of the pipe P or the fixed part C1, a plurality of grooves are formed on the front and back surfaces in contact with them.

As a means for fixing the connector 2 when the pipe P is tightened, as shown in FIG. 3A, the fitting groove 21 of the pipe P is provided on one end face of the connector 2 to rotate the connector 2. Can be prevented. Moreover, when connecting the two pipes C at 90 °, the fitting grooves 21 may be provided orthogonally on both end faces of the connector 2 as shown in FIG.

The connector 2 may be fixed to one of the clamps C in addition to being provided so as to be rotatable with respect to each clamp C. For example, as shown in FIG. 4, one end portion of the connector 2 is fixed to the fixing portion C1 of the clamp C by a screw, a rivet, welding or the like as a fixing portion 22. If this connection tool 2 is used, if the pipe P is fastened first from the movable side clamp C, the fixed side clamp C can be fixed at an arbitrary angle, and the pipe P is attached to the fixed side clamp C. The work when tightening can be facilitated.

When the fixing portion 22 of the connector 2 is fixed to one of the clamps C, if the angle is displayed on the movable peripheral surface of the connector 2 as shown in FIG. The angle of the clamp C can be clearly shown, and the angle setting when connecting the pipes P can be made easily and reliably.

C clamp C1 fixed part C2 movable part P pipe 1 pipe connection clamp 2 connection tool 21 fitting groove 22 fixed part 3 pipe movement prevention space

Claims (2)

  It is intended to connect two pipes at an arbitrary angle, and is composed of a fixed portion and a movable portion that is rotatably connected to the fixed portion, and a bolt that is rotatably provided on the fixed portion. A pair of clamps that fasten the movable part with a nut screwed to the pipe and fix the pipe are connected to each other by a connecting tool so that the connecting parts can be rotated. A pipe connection clamp, characterized in that both ends are exposed to a pipe movement prevention space provided in a rotatable manner and formed by a fixed portion and a movable portion and in which the pipe is tightened.   It is intended to connect two pipes at an arbitrary angle, and is composed of a fixed portion and a movable portion that is rotatably connected to the fixed portion, and a bolt that is rotatably provided on the fixed portion. A pair of clamps that fasten the movable part with a nut screwed to the pipe and fix the pipe, and the fixed parts are connected to each other by a connecting tool, and the connecting tool has one end of one clamp. A pipe connection clamp characterized by being fixed to a fixed part and having the other end faced to a pipe movement prevention space formed by a fixed part and a movable part of the other clamp and tightening the pipe.

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