JP2670982B2 - Pipe connection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting device for temporary structures using pipe materials such as steel pipes used in scaffolding at construction sites, beam formwork support, temporary stands for spectators, etc. TECHNICAL FIELD The present invention relates to a pipe material connecting device which is excellent in workability, workability, and economics and which enables repeated construction and disassembly.

[0002]

2. Description of the Related Art As a pipe material connecting device used for constructing a temporary structure or the like using pipe material, there is, for example, one shown in FIG. 4, in which a rectangular hole 53a is bored in the approximate center. The spacer 52 having a plurality of substantially rectangular shaped engaging projections 53 protruding in the centrifugal direction is attached to the main pillar pipe 51.
Is fixed to an appropriate position, and the connecting portion 54 is formed in a substantially U-shape, and the square-shaped holes 54a, 54a are bored at substantially the centers of the upper and lower protruding portions. The engaging protrusion 53 is interposed between the upper portion and the lower portion of the connecting portion 54, and the wedge 56 is fixed to the hole 54 in the upper portion of the connecting portion 54.
The connecting portion 54 and the engaging protrusion 53 are fixed by press-fitting from a through the hole 53a provided in the engaging protrusion 53 to the hole 54a in the lower part of the connecting portion 54, and the main pillar pipe 51 and the connected The member 60 was connected.

[0003]

However, according to the structure described above, since the wedge 56 is used to fix the engaging projection 53 and the connecting portion 54, the holes 54a, 54a in the upper and lower portions of the connecting portion 54 are formed. Since the holes 53a of the engaging projections 53 and the wedge 56 need to be processed precisely, there are drawbacks such as high cost, and the wedge 56 is displaced during use, resulting in large rattling. There was a flaw. Further, since it is necessary to form the wedge 56 longer than necessary so as not to come off, there is a drawback that if the wedge 56 is press-fitted into the holes 53a, 54a, 54a, the lower portion of the wedge 56 projects and is dangerous.

The present invention has been made in order to eliminate the above-mentioned drawbacks, and enables construction of a temporary structure which is safe and stable with a simple structure, and can be easily constructed and disassembled. An object of the present invention is to provide a pipe material connecting device.

[0005]

In order to achieve the above-mentioned object, the present invention has a plurality of engaging projections fixed to appropriate positions of a main column pipe and having a fitting female portion in the approximate center thereof in the centrifugal direction. A spacer that is provided and insertion holes on both sides, and a male fitting portion that is shaped to fit the female fitting portion is provided on the inner side surface so as to fit with the engaging protrusion. And a connecting portion having a substantially U-shaped outer wall portion formed in, and a cross-sectional shape that is formed to be the same as the shape of the insertion hole, insertable into the insertion hole, and the inner surface of the outer wall portion of the connecting portion. It is characterized in that it comprises a lock pin that holds an engaging projection provided on the spacer.

It should be noted that the fitting female portion is formed by vertically perforating substantially the center of the engaging projection, and the fitting male portion is formed so as to extend downward from the inner upper surface of the outer wall portion. It is preferable that the protrusion is provided so as to be thinner than the thickness of the protrusion, and that a pair of insertion holes are provided at positions facing each other on both sides of the outer wall.

[0007]

Operation: The connecting portion is fixed to the member to be connected, and the outer wall portion of the connecting portion is provided on the engaging projection portion and the fitting female portion of the engaging projection portion which are provided on the spacer fixed to an appropriate position of the main pillar pipe. By fitting the fitting male portion and the fitting male portion respectively, it is possible to prevent rattling in the directions (front and rear and left and right directions) orthogonal to the protruding direction of the fitting male portion. Then, by pressing the lock pin into the insertion hole of the outer wall portion, the outer wall portion and the lock pin hold and fix the engaging protrusion protruding on the spacer, and the direction parallel to the protruding direction of the male fitting portion is fixed. Prevents rattling (up and down). As a result, the main pillar pipe and the member to be connected are reliably connected and fixed, and a temporary structure or the like can be constructed.

Further, by pulling out the lock pin from the outer wall portion of the connecting portion, the vertical regulation of the engaging projection and the connecting portion is removed, the connected member is removed from the main pillar pipe, and the structure can be disassembled sequentially. .

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. In FIGS. 1 and 2, from the outer peripheral surface of the cylindrical spacer 2 fixed to an appropriate position of the main pillar pipe 1 by means such as welding, a plurality of (in this embodiment, 4
The engaging projection 3 is formed to have a rectangular shape, and a rectangular female fitting portion 3a having a rectangular shape is vertically formed in the center of the engaging projection 3. Perforated.

The connecting portion 4 attached to the end portion of the tubular member 10 to be connected is provided with an outer wall portion 4a formed so as to fit with the engaging projection 3 and an inner surface of the outer wall portion 4a. The fitting male portion 4b has a shape that fits with the fitting female portion 3a and is formed thinner than the thickness of the engaging protrusion 3. Specifically, the outer wall portion 4a is formed in a U shape in which the inner width and the width of the engaging protrusion 3 are equal to each other, and the outer wall portion 4a is fitted into the fitting female portion 3a from the inner surface of the outer wall portion 4a having no facing surface. A fitting male portion 4b formed in a mating rectangular shape is projected. Further, the pair of circular insertion holes 5 are provided at the facing positions on the pair of opposing side portions of the outer wall portion 4a.
Is provided.

Further, the engaging projection 3 is press-fitted into the insertion holes 5 and 5.
The connecting portion 4 is provided with a lock pin 6 for sandwiching and fixing the outer wall portion 4a with the outer wall portion 4a. The lock pin 6 has a cross-sectional shape equal to that of the insertion hole 5 and has an overall length to some extent larger than the width of the outer wall portion 4a. It is long and has a thinner tip and a thicker other end than the central body. For example, it is preferable that one end is thin and the other end is thick with a rod shape having a circular cross section. The lock pin 6 is attached to the connecting portion 4 by a string-like body 7, for example, a chain or a wire.

The engaging protrusion 3 provided on the spacer 2 is formed in a polygonal column shape, an elliptic column shape, or the like, and the fitting female portion 3a bored in the engaging protrusion 3 has a triangular shape. It may be formed in a columnar shape, a polygonal columnar shape, a columnar shape, an elliptic cylinder shape, or the like. Should be formed. Furthermore, the shapes of the insertion hole 5 and the lock pin 6 may be formed so as to correspond to each other. For example, the lock pin 6 is formed in a wedge shape, and the insertion holes 5 and 5 are formed in accordance with the inclination angle of the lock pin 6.
Alternatively, the lock pins 6 may be formed in rectangular shapes having different sizes, and the lock pin 6 may be press-fitted from the larger insertion hole 5.

Next, the operation will be described. The fitting provided on the engaging projection 3 and the engaging projection 3a, which is fixed to the end of the member 10 to be connected, and which is provided on the spacer 2 fixed to the main pillar pipe 1 at an appropriate position. By fitting the outer wall portion 4a and the fitting male portion 4b of the connecting portion 4 into the female portion 3a from above, rattling in the front-rear and left-right directions can be prevented. At this time, the male fitting portion 4b does not project from the lower surface of the engaging projection 3. Then, the lock pin 6 is attached to the outer wall portion 4a.
By press-fitting into the insertion holes 5 and 5, the outer wall 4a and the lock pin 6 pinch and fix the engaging projection 3 projecting from the spacer 2 to prevent rattling in the vertical direction. As a result, the main pillar pipe 1 and the connected member 10 are reliably connected and fixed, and a temporary structure or the like can be constructed.

Further, the lock pin 6 is connected to the outer wall portion 4 of the connecting portion 4.
By pulling out from a, the vertical regulation of the engaging projection 3 and the connecting portion 4 is removed, the connected member 10 is removed from the main pillar pipe 1, and the structure can be disassembled sequentially. And
Since the extracted lock pin 6 is connected to the connecting portion 4 by the string-like body 7, it does not get lost.

Further, since it is difficult to apply a force in the direction in which the lock pin 6 comes off, the lock pin 6 does not come off and it is not necessary to make the lock pin 6 longer than necessary.

Now, referring to FIG. 3, a description will be given of an example of use of the above-described embodiment. In the vicinity of both ends of one main connected member 10a, the outsides of both ends are positioned on a vertical line. Substantially J-shaped connected members 10b, 10b bent in the direction of
Is further provided, and further the substantially J-shaped connected members 10b, 1
In the middle part of 0b, the connected member 10 that is short toward the outside
Similarly to the above-mentioned tip, c and 10c are provided with the tips aligned on a vertical line. Then, these connected members 10
The connecting portions 4 are attached to the tips of a, 10b, and 10c in a straight line. Further, the connected members 10a, 10
A plurality of spacers 2 are welded to the main pillar pipe 1 in accordance with the intervals of the connecting portions 4 attached to b and 10c.

The engaging projection 3 provided on the spacer 2 fixed to an appropriate position of the main pillar pipe 1, 1 and the fitting female portion 3a provided on the engagement projection 3a are connected to the connecting portion 4. The outer wall portion 4a and the fitting male portion 4b are fitted from above, and the lock pin 6 is press-fitted into the insertion holes 5 and 5 of the outer wall portion 4a, so that the outer wall portion 4a and the lock pin 6 project into the spacer 2. The provided engaging projections 3 are fixed, and each connected member 1
0a, 10b, 10c are simultaneously connected between the two main pillar pipes 1, 1.

In the temporary structure constructed as described above, a plurality of reinforcing connected members 10b and 10c are provided below the main connected member 10a, so that the strength of the temporary structure can be improved. Becomes Furthermore, by connecting a plurality of members to be connected between the main pillar pipes 1 and 1 according to the size of the structure and the situation of use, it is possible to perform rearrangement suitable for the application. Conventionally, such a structure is often constructed by welding these connected members to a main pillar pipe, which cannot be disassembled and the interval between the main pillar pipes cannot be changed.

[0019]

As described above in detail, according to the present invention, the engaging projection and the outer wall portion of the connecting portion, the fitting female portion of the engaging projection and the fitting male portion of the connecting portion are fitted together. , No rattling in a direction orthogonal to the protruding direction of the fitting male part is generated at all, and there is no rattling in a direction parallel to the projecting direction of the fitting protrusion between the lock pin and the outer wall part of the connecting part. Since it does not generate, it is possible to construct a stable temporary structure with extremely high safety.

Furthermore, by minimizing the protruding length of the lock pin, it is possible to eliminate waste and enhance safety during work. Further, since the present invention can be implemented with a simple configuration without using a special material, it is possible to provide a pipe material connecting device that is low in cost and has general versatility.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a partial sectional view showing a connected state of the embodiment.

FIG. 3 is a plan view showing a usage state of the above embodiment.

FIG. 4 is a perspective view showing a conventional coupling device.

[Explanation of symbols]

 1 Main Column Pipe 2 Spacer 3 Engaging Projection 3a Fitting Female Part 4 Connecting Part 4a Outer Wall Part 4b Fitting Male Part 5 Insertion Hole 6 Lock Pin

Claims (3)

(57) [Claims] 1. A spacer having a plurality of engaging projections fixed to appropriate positions of a main pillar pipe, the engaging projections having a fitting female portion at substantially the center thereof and projecting in the centrifugal direction, and insertion holes respectively on opposite side surfaces facing each other. A coupling having a substantially U-shaped outer wall portion provided with a male fitting portion shaped to fit the female female portion and projecting on the inner side surface, and shaped to fit the engaging protrusion. And a lock pin that can be inserted into the insertion hole and that holds an engaging projection protruding from the spacer between the outer wall of the connecting portion and the inner surface of the connecting portion. 2. The fitting female portion is formed by vertically perforating substantially the center of the engagement protrusion, and the fitting male portion has a thickness smaller than the thickness of the engagement protrusion. The pipe material connecting device according to claim 1, wherein the pipe material connecting member is formed so as to have a protrusion and is provided so as to protrude downward from an inner upper surface of the outer wall portion. 3. The pipe material connecting device according to claim 1, wherein the insertion holes are provided at positions facing each other on both sides of the outer wall portion.