JPH0729195U - Connection pipe for scaffolding frame - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a connecting pipe capable of safely and efficiently performing attachment / detachment work of a scaffolding frame at a high place. [Structure] An engaging rod 24 is provided by a coil spring 25 so as to be retractable and retractable by engaging with an upper scaffolding frame of the connecting pipe 20 and serving as a retaining function. Then, one end of the engaging rod 24 is bent into a substantially U-shape, and the substantially U-shape is inflated toward the outside so that it is provided between the inside of the substantially U-shape and the side surface of the connecting pipe 20. A space A having a space into which the tip of a work tool such as No. 1 is inserted is provided, and the tip of the work tool such as No. 3 is inserted into the space A to attach and detach the scaffold frame.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a scaffolding frame connecting pipe for vertically connecting scaffolding frames used for temporary scaffolding for construction work.

[0002]

[Prior art]

 In the building construction work, as shown in FIG. 11, temporary scaffolds are formed by stacking scaffolding frames 1 near the building in multiple steps according to the height of the building. The stacking of the scaffolding frame 1 uses a connecting pipe 3 that connects the building sites 2 of the upper and lower scaffolding frames 1.

Conventionally, as this connecting pipe 3, as shown in FIG. 10, a collar body 4 having the same diameter as the pipe diameter of the building 2 is fitted in the vicinity of the central portion of a pipe 5 to be inserted into the building 2. Is common. In order to engage the building 2 and the connecting pipe 3, an engaging rod 6 whose one end is bent into a substantially U-shape is passed through the color integrated body 4 and a spring body 7 is interposed to form an approximately U-shape. There is a type in which the tip bent into a shape is used as an engaging portion 8 and can be retracted into an engaging hole 9 formed in the pipe body 5 of the connecting pipe 3.

When connecting the scaffolding frame 1, first, the lower part of the pipe body 5 is inserted into the upper end of the building 2 of the scaffolding frame 1 located below and is attached by the mounting pin 10 and the split pin 11, and The building site 2 of the scaffolding frame 1 to be stacked upward is inserted in the upper part of the body 5. At this time, the engaging rod 8 is pulled out from the engaging hole 9 of the pipe body 5 by pulling the engaging rod 6 by pinching the substantially U-shaped portion of the engaging rod 6 with a finger, and engages with the pipe body 5. Make sure that there is a gap between it and the part 8. Then, the building 2 is inserted into this gap, and when the engaging hole 12 formed in the building 2 and the engaging hole 9 of the pipe body 5 coincide with each other, the engaging portion 8 of the engaging rod 6 is engaged. When the finger is released facing the joint hole 12, the engaging portion 8 is sunk into the engaging hole 12 of the building 2 due to the restoring force of the spring body 7, and the connecting pipe 3 and the building 2 are connected. ing.

[0005]

[Problems to be solved by the device]

 However, if the engagement rod 6 has a simple U-shape as in the conventional case, when the engagement rod 6 is in a retracted state, it may be located between the inside of the substantially U-shaped portion and the side surface of the connecting pipe. There are almost no gaps, and when the building is inserted, the inside of the U-shaped part comes into close contact with the building side surface, and even if the engaging rod is pulled out to attach and detach the scaffolding frame. It was difficult to pinch the substantially U-shaped part, and there were points to be improved in work efficiency and safety in order to bend over at a high place and perform attachment / detachment work.

In view of the above points, the present invention provides a scaffolding frame connecting pipe in which a substantially U-shaped engaging rod is improved so that the scaffolding frame can be attached / detached safely and efficiently. With the goal.

[0007]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention comprises a collar body fitted to a tube body of an appropriate length, an engaging rod and a spring body, and one end of which is bent into a substantially U-shape and its tip end is bent. Is used as an engaging portion, and the engaging portion is freely retractable with respect to an engaging hole formed in a tubular body above the collar body. In the scaffolding frame connecting pipe for connecting the upper and lower building frames of the temporary scaffolding, the engagement is performed. When the engaging portion of the rod is in the engaging position, it is possible to insert the tip of a working tool such as a gap maker formed by the inside of the substantially U-shaped portion of the engaging rod and the side surface of the tubular body. The U-shaped part is formed so as to bulge outward so that it is as wide as possible.

[0008]

[Action]

 According to the present invention, when the scaffolding frame is attached or detached, a space is formed between the substantially U-shaped portion that is inflated outward and the side surface of the pipe body or the building, so that an operator can work in that space. It is easy and quick to pull out and rotate the engaging rod by inserting the tip of a simple work tool, such as a commonly owned shio, for work when attaching and detaching the scaffolding frame. The efficiency can be improved.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 3 show a connecting pipe of the present invention, in which 20 is a connecting pipe for connecting scaffolding frames, and is a pipe of an appropriate length having an outer diameter slightly smaller than the inner diameter of the building pipe of the scaffolding frame. A collar body 22 having the same diameter as the building pipe diameter of the scaffolding frame is fitted and fixed to the outer periphery of the central portion of the body 21, and a through hole penetrating the collar body 22 and the pipe body 21 on the side surface of the collar body 22. 23 is drilled. Reference numeral 24 denotes an engaging rod which has an engaging portion 24a formed at its tip by bending one end into a substantially U shape, and is further bent near the center of the substantially U shape. It bends and has a bulge outward. A space A in which the tip of a work tool such as a hammer can be inserted between the inside of the substantially U-shaped portion and the side surfaces of the collar body 22 and the tube body 21 even when the engagement rod 24 is retracted. To ensure.

The engaging rod 24 is passed through a through hole 23 formed in the collar body 22. At this time, the coil spring 25 is interposed in the penetrating portion of the engaging rod 24, and further, in order to prevent the engaging rod 24 from coming off, a retaining pin 26 is inserted so as to lock the end of the coil spring 25, and the engaging rod 24 is engaged. The engaging portion 24a of the rod 24 is urged so as to be drawn toward the tube body 21 side.

Further, an engaging hole 27 through which the engaging portion 24a is inserted is formed in the side surface of the tubular body 21 above the collar body 22, and as the engaging rod 24 appears and disappears as shown in FIG. The engaging portion 24a is projected and retracted from the engaging hole 27.

In the present embodiment, an example in which the substantially U-shaped portion is further bent is mainly described. However, the substantially U-shaped portion is not limited to this shape at all, and the working work is performed on this portion. It suffices to secure a space into which the tip of the tool can be inserted. For example, as shown in FIG. 4, a substantially U-shape may be enlarged, or the space may be secured by bending it into a horizontal U-shape.

Reference numeral 28 is a pin hole into which the mounting pin 10 for fixing the connecting pipe 20 to the lower scaffolding frame is inserted.

Next, a method of using the connecting pipe 20 will be described with reference to FIGS. 5 to 8. When the scaffolding frames 1 are piled up, as shown in FIG. 5, they are connected to the building site 2 of the lower scaffolding frame 1. Insert the pipe body 21 of the pipe 20, align the pin hole formed in the upper part of the building 2 with the pin hole 28 of the connecting pipe 20, insert the mounting pin 10, and use the split pin 11 to prevent it from coming off. The connecting pipe 20 is fixed.

Next, the tip of a working tool such as B having a substantially U-shaped portion of the engaging rod 24 is inserted, and the engaging rod 24 of the connecting pipe 20 is operated to be pulled out as shown in FIG. The engaging portion 24 a is pulled out from the engaging hole 27. Then, as shown in FIG. 7, the engaging portion 24a is rotated and held so that the engaging portion 24a is pulled out from the engaging hole 27.

In this state, the building 2 of the scaffolding frame 1 to be piled up in the upper stage is inserted from above as shown by the phantom line in FIG. 8, and the engaging hole 12 of the building 2 of the scaffolding frame 1 and the connecting pipe 20 The engagement holes 27 are aligned with each other.

Next, the operation opposite to the operation described in FIGS. 5 to 7 is performed to return the engaging rod 24 to the original position. That is, the tip of a working tool such as a shin B is inserted into the space A of the substantially U-shaped portion of the engaging rod 24, and the engaging rod 24 is rotated to its original position while being pulled out, thereby engaging the engaging portion 24a. Is inserted into the engagement hole 12 of the scaffold frame 1, the upper scaffold frame is firmly connected to the connecting pipe 20.

Further, FIG. 9 shows a structure in which the upper part of the engaging portion 24 a of the engaging rod 24 is cut out to form the inclined portion 24 b so that the upper scaffolding frame can be attached to the connecting pipe 20 with one touch. By doing so, if the building 2 of the scaffolding frame 1 is inserted from above and dropped, the lower end of the building 2 comes into contact with the inclined portion 24b, and the impact rod 24 virtualizes the engaging rod 24 by its impact force. You can attach the scaffolding frame by pushing it slightly backward as shown by the line. When the scaffolding frame is attached, the engaging hole 12 of the building 2 and the engaging hole 27 of the connecting pipe 20 are aligned with each other, and the restoring force of the coil spring 25 causes the engaging portion 24a of the engaging rod 24 to be formed on the building. The second engaging hole 12 and the engaging hole 27 of the connecting pipe 20 are inserted into the engaging hole 27 to be engaged and can be mounted with one touch.

When removing the scaffolding frame, a working tool such as B is inserted into the space A of the substantially U-shaped portion of the engaging rod 24 in the same manner as shown in FIGS. When the scaffolding frame is pulled out, it is rotated together with the engagement rod 24 pulled out from the engagement hole 12 of the scaffolding frame 1 and the scaffolding frame is lifted up, so that the scaffolding frame can be easily removed.

[0021]

[Effect of device]

 As described above, according to the present invention, the substantially U-shaped portion of the engaging rod 24, which has a retaining function by engaging with the upper scaffolding frame of the connecting pipe 20, is bulged toward the outside. Since the space A into which the tip of the work tool can be inserted is formed inside the character-shaped portion, the tip of the work tool such as a shim is inserted into the space A when the engaging rod 24 is retracted and retracted. This eliminates the need to bend down and pinch with your fingertips to pull out the scaffolding frame at high places safely and efficiently as in the past.

[Brief description of drawings]

FIG. 1 is a front view of a scaffolding frame connecting pipe according to the present invention.

FIG. 2 is a partially cutaway front view of FIG.

FIG. 3 is a partially cutaway front view for explaining a state in which the engagement rod of FIG. 2 is pulled out.

FIG. 4 is an explanatory view showing another embodiment of the engagement rod.

FIG. 5 is an explanatory view illustrating a method of attaching and detaching the connecting pipe of the present invention.

FIG. 6 is an explanatory view illustrating a method of attaching and detaching the connecting pipe of the present invention.

FIG. 7 is an explanatory view illustrating a method of attaching and detaching the connecting pipe of the present invention.

FIG. 8 is an explanatory view illustrating a method of attaching and detaching the connecting pipe of the present invention.

FIG. 9 is an explanatory view illustrating another method of attaching and detaching the connecting pipe of the present invention.

FIG. 10 is a partially cut-away front view for explaining a mounting state of a conventional connecting pipe.

FIG. 11 is an explanatory diagram showing a state in which conventional scaffolding frames are stacked.

[Explanation of sign]

 20 ... Connection pipe 21 ... Tube body 22 ... Collar body 23 ... Through hole 24 ... Engaging rod 24a ... Engaging portion 25 ... Spring body

Claims (1)

[Scope of utility model registration request] 1. A collar body fitted to a tubular body of an appropriate length is provided with an engaging rod together with a spring body, one end of which is bent into a substantially U-shape, and the front end of which serves as an engaging portion. In a scaffolding frame connecting pipe for connecting the upper and lower construction frames of the temporary scaffolding so that the engaging portion can be retracted into and out of an engaging hole provided in a tubular body above the collar body, the engaging portion of the engaging rod is engaged. When in the mating position, the gap formed by the inner side of the substantially U-shaped portion of the engaging rod and the side surface of the tubular body has a width such that the tip of a working tool such as a slot can be inserted. A connecting pipe for a scaffolding frame, characterized in that the U-shaped portion is formed to bulge outward.