JP2620752B2 - Pipe connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe connector frequently used in assembling a scaffold for building, for example.

[0002]

2. Description of the Related Art Conventionally, a clamping holder is pivotally connected to one end of an L-shaped pipe receiving base having a pipe retaining edge so as to be openable and closable. A bolt rod is provided at the end of the pipe receiving body, a support portion is provided at the other end of the pipe receiving base, and a fitting groove in which the bolt rod is fitted is formed in the support portion. The fastening member is closed, and the bolt is inserted into the fitting groove. A rod is inserted, a nut is screwed in from the outside, and the pipe is held and fixed by tightening it against the support portion. For example, by connecting this clamp back to back, two temporary pipes orthogonally cross each other. Things.

[0003] Conventionally, such a clamp tightening operation is a bolt and nut tightening method, which requires a rotating tool and requires a turning and tightening operation.

Therefore, the applicant has worked on the development of a wedge-type clamp that can be tightened only with a hammer or other hitting tool, and has developed a wedge-type clamp such as Japanese Utility Model Application No. 4-54068.

However, since the wedge has a shape as shown in FIG. 7, for example, when the wedge struck back is removed and the clamp is removed depending on the fastening position of the clamp, as shown in FIG. There is an obstacle 17 at the tip,
In some cases, it is difficult to strike back the wedge driving end in the returning direction, which may cause a problem that the clamp becomes difficult to remove.

The present invention has been made to solve the above-mentioned problems by further improving this wedge-type clamp, and providing a practical wedge-type clamp which prevents the clamp from being difficult to remove. The purpose is.

[0007]

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

[0008] The base end of the clamping holder 3 is pivotally connected to one end of the base 2 having the holding edge 2 'for holding the steel pipe 1, and the clamping holder 3 is fixed to the base 2. The supporting portion 4 is protrudingly provided at the other end of the base 2, and the fitting portion 5 into which the opening / closing tip of the fastening member 3 is fitted so as to divide the supporting portion 4 is attached to the base 2. formed at the other end, the closing end portion of the clamping retaining member 3, bearing 4 upon insertion the opening tip portion into the fitting portion 5
And at a predetermined gap projecting a bearing face 6 opposite to the opening and closing end portion of the clamping retaining body 3 with respect to the tightening retaining body 3
To make it free to rotate and to keep it away from the clamping body 3
The wedge body 7 is protruded in the length direction of the holding body 3 to
2 holds the steel pipe 1 and raises the holding body 3 to fasten the steel pipe 1
At the time of holding and holding, the wedge body 7 is rotated approximately 90 degrees to
It is configured to be able to slide between the part 4 and the bearing opposing part 6
A pipe connecting tool, characterized in that an engaging / disengaging striking portion 11 capable of striking in a return direction opposite to the striking direction of the wedge body 7 is protrudingly provided on the basal end side of the wedge body 7. Pertaining to a pipe coupler.

[0009]

The clamping body 3 is closed by holding the base 2 in the steel pipe 1 and the opening / closing end of the clamping body 3 is fitted into the notch 5.

Then, the bearing portion 4 and the bearing facing portion 6 face each other with a predetermined gap therebetween, and the wedge body 7 is rotated so as to be able to slide into the gap. 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.

When the product of the present invention is to be removed, on the contrary, the tip of the wedge 7 on the driving side is hit in the return direction opposite to the driving slide direction, and the wedge 7 is returned and removed. If there is an obstacle on the tip side of the driving side of the body 7 and it is difficult to hit back, the hitting / unengaging hitting portion 11 provided on the base end of the wedge body 7 is hit in the returning direction. The wedge body 7 is returned, and the product is removed.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the drawings, the present invention is provided with a pipe pivot connecting portion 15 which is connected to both ends of a pipe 14 via the connecting portion 15 to form a leg pipe 16 for constructing a working scaffold.
Fig. 2 shows a case where the pipe 14 is erected in a crossed state and used to reinforce a work scaffold according to the present invention.

In this embodiment, a clamping holder 3 is pivotally connected to one end of an L-shaped base 2 having a holding edge 2 'in a manner substantially similar to that of the conventional bolt and nut system, so that it can be opened and closed. The other end is protruded outward to form a support portion 4, and a cutout groove is formed so as to divide the support portion 4 to form a fitting portion 5 (fitting notch portion 5).
Is formed.

On the other hand, the opening / closing end to be fitted into the fitting notch 5 of the clamped holder 3 is bent at substantially right angle to form a bearing facing portion 6 which is in a projected state, and this bearing facing portion 6 and the clamped holder 3 are formed. And a mounting rod 9 is installed between them. The driving slide long window 10 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 clamped holding body 3 and the driving slide is free. Is provided.

The wedge body 7 is provided with a hitting portion 13 at a base end portion on the driving side, is set in a wedge shape that becomes narrower toward the tip, and is substantially perpendicular to the fitting notch portion 5 after the fastening and holding portion 3 is fitted. By rotating the wedge body 7 and hitting the hitting portion 13, the wedge body 7 is driven into the gap between the support portion 4 and the support opposing portion 6 to be locked.

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

Further, a curved surface 8 is provided so as to be located substantially above the center of the bearings 4 which are divided and formed symmetrically by the fitting notch 5. Therefore, in the tightened state in which the wedge body 7 is driven, the bearing opposing portion 6 is located above the bearing portions 4 divided by the fitting cutouts 5 left and right, and the opposing surface of the bearing opposing portion 6 is on 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 and cantilever state without being in a cantilever state. The tightening by driving is firm, and this condition is stable, and it is an excellent wedge-type pipe connector that is hard to come off.

The wedge body 7 of this embodiment is formed so that the left and right parallel edges bordering the driving slide window 10 are in contact with the support portion 4, and the left and right parallel edges are engaged. Two linear guide grooves 12 are provided on the bearing surface of the bearing portion 4. The guide groove 12 is formed by pressing the back surface of the support portion 4 and projecting between the two guide grooves 12 toward the support surface.

The present invention further improves the following points.

In this embodiment, a wedge 7 is integrally formed in an L-shape by protruding an engagement / disengagement hitting portion 11 laterally from the base end of the wedge 7 on the driving side. A batting part 13 for inserting and sliding the wedge 7 into the base end surface (outer surface) of the batting part 11 for engaging and disengaging.
Accordingly, the hitting portion 13 is formed widely, and the end face (inner back surface) on the driving side of the engaging / disengaging hitting portion 11 is used as a hitting surface when the wedge body 7 is hit back.

Therefore, when removing the product of the present invention, the wedge body 7 is hit back by hitting the leading end of the wedge body 7 in the returning direction opposite to the driving slide direction. 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 for the rod 17 and the like to hit the driving end of the wedge 7 in the returning direction with a hammer or the like. In this case, the engagement / disengagement hitting portion 11 protruding from the driving-side base end of the wedge body 7 can be hit without any obstacle.
The wedge body 7 is returned by hitting the end face on the driving side in the returning direction, and the product of the present invention is removed.

Therefore, in some cases, the product of the present invention can be easily detached by using the engagement / disengagement hitting portion 11 regardless of where the fixing portion is attached.

Further, since the wedge body 7 may be simply formed integrally with the L-shape as in this embodiment, the cost does not increase,
Further, the engagement / disengagement hitting portion 11 can be used even when the wedge body 7 is driven and slid, and the driving of the wedge body 7 and the return of the wedge body 7 are facilitated.

The base 2 is constructed by pivotally connecting the holding body 2B to the other end of an L-shaped body 2A having a C-shaped holding edge 2 'so as to be openable and closable. The present invention may be applied to a clamp consisting of three points, namely, a clamp and a clamping and holding body 3 pivotally attached to one end of the base 2, and the configuration of each member may be appropriately designed.

[0025]

According to the present invention because the structure described above, the single
When the holding body is raised and held, the wedge body is turned approximately 90 degrees.
Moving between the bearing and the bearing facing,
Just slide it into the crossed state on the other end of the
It is very easy to perform
The force is not just the wedge locking action of the wedge,
Stopping causes the wedge to cross over the other end of the base.
Securely hold the clamp holder to lock in the difference state
Because it is fixed, the holding strength is extremely strong and excellent in safety
Pipe connector.

That is, the opening direction of the tightening and holding body and the wedge return of the wedge body.
Direction is not the same direction but the direction is orthogonal, so the degree of tightening is loose.
The embracing strength is firmly maintained and extremely low
Excellent overall performance and extremely easy tightening and fixing operation
It is a pipe connector with excellent practicality.

Also, the present invention provides the engagement / disengagement hitting portion even if it is difficult to strike back the driving end of the wedge by the obstacle depending on the mounting location of the clamp. Since the wedge body can be hit back by hitting back the engagement / disengagement hitting portion provided at the base end, an excellent wedge-type pipe connecting tool that can be easily removed and the place of fastening is not limited.

[Brief description of the drawings]

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

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

3 is a cross-sectional view of a state in tightening the embodiment (mounting state).

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

FIG. 5 is a perspective view of a wedge 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 conventional wedge.

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Steel pipe 2 Base 2 'Holding edge 3 Clamping holding body 4 Bearing part 5 Fitting notch part 6 Bearing opposing part 7 Wedge body 11 Disengagement hitting part

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hiroshi Yoshida 4-11-4 Taito, Taito-ku, Tokyo Inside Vitality Leasing Co., Ltd. (72) Inventor Shinji Yoshida 1-21 Fuso-cho, Amagasaki-shi, Hyogo Sumikin Steel Industry Incorporated (56) References Japanese Utility Model Showa 61-133644 (JP, U) Japanese Utility Model Showa 52-86916 (JP, U)

Claims (1)

(57) [Claims] 1. A base member having a holding edge for holding a steel pipe, the base end of which is pivotally connected to one end of a base member, and the tightening member is provided on the base member so as to be freely opened and closed. A support portion is protruded from the other end of the base, and a fitting portion into which the opening / closing tip of the clamp holder is fitted is formed at the other end of the base so as to divide the support portion. the opening and closing the tip portion of the lifting body, projecting the bearing facing portion facing at a bearing portion with a predetermined gap when fitted the opening tip fitting portion, the opening and closing end portion of the clamping retaining body Tightening
Rotate freely with respect to the holding body and keep away from the tightening holding body
The wedge body in the length direction of the clamp
Hold the steel pipe with the base and tighten the holding body to tighten the steel pipe.
When held and held, the wedge body is rotated approximately 90 degrees and
A pipe connector configured to be capable of being driven and slid between the bearing opposing portions , wherein the wedge body has a basal end which is struck in a return direction opposite to the wedge body driving direction. A pipe connector characterized by projecting an engaging / disengaging hitting portion.