JPH07166694A - Pipe connector - Google Patents

Abstract

PURPOSE:To provide an excellent wedge type pipe connector which is removable and mountable to any place without any l imitation by further upgrading a wedge type clamp and capable of driving back a wedge body even when it is difficult to drive back the tip of the wedge due to the existence of an obstacle. CONSTITUTION:The base end of a clamp holding member 3 is pivoted to one end of a base body 2 forming a holding edge 2' which holds a steel pipe 1 and the clamp holding member 3 is installed so that it may be opened freely while a bearing unit 4 is projectingly installed to the other end of the base body 2. A fit-in notched part 5 into which the end of the clamp and hold body 3 is fitted, is formed on the other end of the base body 2 so as to cut off the bearing unit 4. A bearing opposed unit 6, which is opposed to the bearing unit 4 with a specified clearance, is projectingly installed to the end of the bearing unit 4 when the end of the clamp and hold unit is fitted into the fitting notched part 5. A wedge 7 is rotatively installed to the end of the clamp holding member 3, and what is more, it is installed between the bearing unit 4 and the bearing opposed unit 6 slidingly and drivingly. A removable striking unit 11 capable of striking in the driving direction of the wedge 7 and the returning direction on the opposite, is projectingly installed to a driving base end side of the wedge 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe connector which is frequently used when assembling a scaffold for construction.

[0002]

2. Description of the Related Art Conventionally, a fastening holding body is pivotally attached to one end of an L-shaped pipe receiving base having a pipe holding edge so that the fastening holding body can be opened and closed. A bolt rod is provided at the tip of the pipe, a bearing is provided at the other end of the pipe receiving base, and a fitting groove into which the bolt rod is fitted is formed in this bearing, and the tightening and holding body is closed, and the bolt is inserted into the groove. A rod is inserted, and a nut is screwed from the outside to clamp the pipe by holding it to the support part. For example, by connecting two clamps back to back, orthogonal temporary pipes are cross-linked. It is a thing.

The conventional clamping work of such a clamp is a bolt-nut tightening system, which requires a rotating tool and requires a rotating tightening work, which is troublesome and inefficient in work.

Therefore, the applicant has worked on the development of a wedge type clamp which can be tightened only by a hammer or other hammer, and has developed, for example, a wedge type clamp such as Japanese Patent Application No. 4-54068.

However, since the wedge has a shape as shown in FIG. 7, for example, when the wedge that has been hit is pushed back and the clamp is removed depending on the fastening position of the clamp, as shown in FIG. Since there is an obstacle 17 at the tip and it may be difficult to push back the tip of the wedge on the driving side in the returning direction, the clamp may be difficult to remove.

The present invention is to further improve the wedge type clamp in order to solve the above problems, and to provide a wedge type clamp excellent in practicality which prevents the clamp from becoming difficult to remove. Has an aim.

[0007]

The gist of the present invention will be described with reference to the accompanying drawings.

A base end of a tightening holder 3 is pivotally attached to one end of a base 2 having a holding edge 2'for holding the steel pipe 1, and the tightening holder 3 is attached to the base 2. Is provided so as to be openable and closable, and a supporting portion 4 is projectingly provided on the other end of the base body 2. The bearing facing portion 6 which is formed at the other end of the fastening holding body 3 and which faces the bearing portion 4 with a predetermined gap when the opening / closing tip portion is fitted into the fitting notch portion 5. A pipe connector in which a wedge body 7 is rotatably provided at the opening / closing tip of the tightening and holding body 3 and is slidably inserted between the bearing portion 4 and the bearing facing portion 6. A pipe connecting tool characterized in that an engaging / disengaging striking portion 11 capable of striking in a returning direction opposite to the striking direction of the wedge body 7 is provided on the striking base end side of the wedge body 7. so That.

[0009]

The steel tube 1 holds the base body 2 and closes the fastening holding body 3 to fit the open / close tip of the fastening holding body 3 into the fitting notch 5.

Then, the bearing portion 4 and the bearing facing portion 6 face each other with a predetermined gap, and the wedge body 7 is rotated so that the wedge slides into the gap so that the slide can be performed. The end portion is driven in, the wedge body 7 is driven in and slid, and the product is held and fixed to the steel pipe 1.

On the contrary, when removing the article of the present invention, the wedge side tip portion of the wedge body 7 is struck in the returning direction opposite to the inserting slide direction to strike back the wedge body 7 and remove it. When it is difficult to hit back by hitting because there is an obstacle on the tip end side of the body 7 on the hitting side, the hitting part 11 for engagement and disengagement provided on the hitting base end side of the wedge body 7 is hit in the returning direction. The wedge body 7 is hit back, and the product of the present invention is removed.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings show a pipe pivotal connecting portion 15 provided in the present invention. The present invention is connected to both ends of a pipe 14 through the connecting portion 15 to form a leg pipe 16 for constructing a work scaffold. The case where the pipes 14 are installed in a crossed state depending on the product and used to reinforce the work scaffold is illustrated.

In this embodiment, a tightening and holding body 3 is pivotally attached to one end of an L-shaped base body 2 having a holding edge 2'having a structure substantially similar to that of the conventional bolt and nut system, The other end is projected outward to form the bearing portion 4, and the notch groove is formed so as to divide the bearing portion 4 to form the fitting notch portion 5.

On the other hand, the opening / closing tip fitted into the fitting notch 5 of the tightening holding body 3 is folded back at a substantially right angle to form a bearing facing portion 6 which is in a protruding state, and the bearing facing portion 6 and the tightening holding body 3 are formed. A mounting rod 9 is installed between and. A long window 10 for insertion slide formed in the length direction of the wedge body 7 is engaged with the mounting rod 9 so that the wedge body 7 is rotatable with respect to the tightening and holding body 3 and is also slideable for insertion. It is provided in.

The wedge body 7 is provided with a striking portion 13 at the base end portion on the driving side and is set in a wedge shape such that the width becomes narrower toward the distal end, and after the tightening holding portion 3 is fitted into the fitting notch portion 5, the wedge body 7 is substantially right angled. By rotating the wedge body 7 and striking the striking portion 13, the wedge body 7 is driven and locked in the gap between the bearing portion 4 and the bearing facing portion 6.

Further, in this embodiment, the bearing facing portion 6 formed by bending is formed on the curved surface 8 in a convex state toward the bearing portion 4 side so that it comes into line contact with the wedge body 7. Is formed.

Further, the curved surface 8 is provided so as to be located substantially above the center of the support portions 4, which are formed by the fitting cutout portion 5 so as to be symmetrically divided. Therefore, in the tightened state in which the wedge body 7 is driven in, the bearing facing portion 6 is located above the bearing portions 4 divided into the right and left by the fitting notch portion 5, and the facing surface of the bearing facing portion 6 is the curved surface 8. Because it is formed
The wedge body 7 is pressed against the wedge body 7 in a line contact state, and the wedge body 7 is pressed against the wedge body 7 in a well-balanced state without being in a cantilever state. Tightening by hammering becomes strong and this state becomes stable, making it an excellent wedge type pipe connector that does not come off easily.

Further, the wedge body 7 of the present embodiment is formed so that the left and right parallel edges of the supporting portion 4 with the long slide slide window 10 for abutment contact each other, and the left and right parallel edges are engaged with each other. Two linear guide grooves 12 are provided on the bearing surface of the bearing portion 4. This guide groove 12 is formed by pressing the back surface of the support part 4 to form two guide grooves.
It is formed by projecting between 12 to the bearing surface side.

The present invention further improves the following points.

In this embodiment, the wedge body 7 is integrally formed in an L-shape by laterally projecting an engaging / disengaging striking portion 11 at the base end of the wedge body 7 on the insertion side. The end face (outer surface) on the base end side of the engaging / disengaging striking part 11 can be used as the striking part 13 into which the wedge body 7 is inserted and slid. The end surface on the entrance side (inner rear surface) is used as a striking surface when the wedge body 7 is hit back.

Therefore, when the article of the present invention is to be removed, the wedge-side tip of the wedge body 7 is struck in the return direction opposite to the slide-in direction, and the wedge body 7 is struck back. When the product of the present invention is mounted as in the usage example of the present embodiment shown in FIG. 6, it is difficult to hit the tip end of the wedge body 7 on the driving side in the returning direction with a hammer or the like because the bar 17 or the like interferes. In this case, the engaging / disengaging striking portion projecting from the base end of the wedge body 7 on the striking side.
11 can be hit without any obstruction, and the end face of the insertion side of the engagement / disengagement hit 11 is hit in the returning direction to hit the wedge body 7 back to remove the product.

Therefore, in some cases, the engaging / disengaging striking portion
By using 11, you can easily remove the product even if you attach it to any fastening place.

Further, since the wedge body 7 is simply formed integrally in the L shape as in this embodiment, the cost is not high,
Further, the engagement / disengagement striking portion 11 can be used even when the wedge body 7 is driven in and slid, so that the wedge body 7 can be driven in and the wedge body 7 can be easily returned.

It should be noted that the base body 2 is constructed by pivotally connecting the holding body 2B to the other end of the L-shaped body 2A having a C-shaped holding edge 2 ', and the holding body 2B is composed of these two bodies. The present invention may be applied to a clamp composed of three points, a clamp holding body 3 pivotally attached to one end of the base body 2, and the configuration of each member can be designed appropriately.

[0025]

Since the present invention is configured as described above, it is possible to prevent the tip end of the wedge body on the driving side from being hit back by an obstacle even if the clamp is attached by providing the engaging and disengaging hitting portion. However, in this case, the wedge body can be pushed back by pushing back the engagement / disengagement striking part provided at the base end of the wedge body, so that excellent detachment is possible and the fastening location is not restricted. It becomes a tool.

[Brief description of drawings]

FIG. 1 is a perspective view of a work scaffold showing a usage example of the present embodiment.

FIG. 2 is an explanatory perspective view of the present embodiment.

FIG. 3 is a cross-sectional view of a conventional tightened state (attached state).

FIG. 4 is a front view of the tightened state (attached state) of the present embodiment.

FIG. 5 is a perspective view of a wedge body according to the present embodiment.

FIG. 6 is an enlarged explanatory diagram showing a usage example of the present embodiment.

FIG. 7 is a perspective view of a wedge of a conventional example.

FIG. 8 is an enlarged explanatory diagram showing a usage example of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Steel pipe 2 Base 2'Holding edge 3 Tightening hugging body 4 Bearing part 5 Fitting notch part 6 Bearing facing part 7 Wedge body 11 Engaging part for engagement and disengagement

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Yoshida 4-11-4 Taito, Taito-ku, Tokyo Japan Vice Lease Co., Ltd. (72) Shinji Yoshida 1-21 Fuso-cho, Amagasaki-shi, Hyogo Sumikin Steel Within Kogyo Co., Ltd.

Claims (1)

[Claims] 1. A fastening holding body is provided so as to be openable and closable with respect to the base body by pivotally attaching a base end portion of the fastening holding body to one end portion of a base body having a holding edge for holding a steel pipe. A protrusion is provided at the other end of the base, and a fitting notch is formed at the other end of the base into which the open / close tip of the fastening body is fitted so as to divide the support.
At the opening / closing tip of this tightening holder, a bearing facing portion is provided so as to face the bearing portion with a predetermined gap when the opening / closing tip is fitted into the fitting notch. A pipe connecting member having a wedge body rotatably provided at an opening / closing tip portion and capable of being inserted and slid between a bearing portion and a bearing facing portion, the wedge body being inserted at a base end side of the wedge body. A pipe connector characterized in that an engaging and disengaging striking portion capable of striking in a returning direction opposite to the direction is provided.