JPH0713980U - Connection pipe for scaffolding frame - Google Patents

Abstract

(57) [Summary] [Purpose] Make it easier to attach and detach the scaffolding frame that is assembled on top. An upper locking pin 14 and a lower locking pin 16 are loosely fitted to both upper and lower ends of a vertically elongated metal fitting main body 21, and a spring body 22 is formed by bending the locking pins 14 and 16 into a substantially V shape. The metal fittings 20 are formed by attaching the metal fittings 20 to both ends.
The locking metal fitting 20 is inserted into the short tube 12 so that the upper locking pin 14 projects from the upper through hole 15 of the short tube 12 and the lower locking pin 16 from the lower through hole 17, and the operating lever 18 By vertically moving, the metal fitting main body 21 is swingable back and forth so that the upper locking pin 14 can be retracted from the upper through hole 15.

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 building construction work, temporary scaffolds are formed by stacking scaffolding frames 1 as shown in Fig. 10 near the building according to the height of the building. For stacking and connecting the scaffolding frames 1, a connecting pipe 3 is used in which a collar body having the same diameter as the pipe diameter of the building 2 of the scaffolding frame 1 is fitted and fixed to the outer periphery of the central portion of a pipe body of an appropriate length. is doing.

Conventionally, as the connecting pipe 3, a substantially L-shaped concave portion 4 is formed at the upper end of the connecting pipe as in the connecting pipe 3'of FIG. 11 disclosed in Japanese Utility Model Publication No. 5-1545. The long hole 5 is drilled at the lower end, and the lower part of the connecting pipe 3'is inserted in advance at the upper end of the building 2 of the scaffolding frame 1 to keep it from coming off, and the upper part of the connecting pipe 3'when assembled. , The lower end of the building 2 of the scaffolding frame 1 to be assembled is inserted, and the connecting pipe 3 ′ is rotated to insert the substantially L-shaped recess 4 into the locking projection 6 provided at the lower end of the building 2. There are many things that do not come out.

[0004]

[Problems to be solved by the device]

 However, in the case of the conventional connecting pipe, when the upper and lower scaffolding frames 1 are attached and detached by the connecting pipe 3 ′, it is necessary to insert and remove the scaffolding frame 1 and rotate the connecting pipe 3 ′. Since the weight of the frame is applied and the locking projection 6 is fitted into the substantially L-shaped recess 4 of the connecting pipe 3 ', when rotating the connecting pipe 3', use a hammer or the like to set the collar portion. Since I was striking and rotating it, it was a heavy burden to do the removal work by myself, and the removal work was troublesome and inefficient.

In view of the above points, an object of the present invention is to provide a scaffolding frame connecting pipe in which scaffolding frame attachment / detachment work can be performed with one touch.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention relates to a scaffolding frame connecting pipe for connecting a vertical building frame of a temporary scaffolding by fitting a color body as a stepped portion in the vicinity of a central portion of a short pipe in a vertically long pipe. The upper locking pin is loosely fitted in the pin mounting hole at the upper end of the metal fitting, and the lower locking pin is loosely fitted in the pin mounting hole at the lower end. Bent and attached to both ends of the spring body mainly attached to the metal fittings to form locking metal fittings, insert the locking metal fittings into the short pipe of the connecting pipe, and use the spring material to attach the upper locking pin. The lower pin is projected from the upper through hole formed on the side of the short pipe above the collar body, and the lower locking pin is projected from the lower through hole formed on the side of the short pipe below the collar body. The operation lever is projected from the inside of the short pipe to the outside of the opened collar body, and the rear end of the operation lever is opened. The metal fitting body is brought into contact with the front surface above the central portion of the metal fitting body, and the metal fitting body is rocked back and forth by operating the operating lever up and down so that the upper locking pin can be retracted from the upper through hole. .

[0007]

[Action]

 According to the present invention, when assembling another scaffolding frame on top of a scaffolding frame to which a connecting pipe is attached, when the lower end of the building of the upper scaffolding frame is inserted into the upper part of the connecting pipe, the upper part which is fixed mainly to the metal fitting is attached. When the locking pin retracts and the lower end of the building is further inserted into the connecting pipe, the upper locking pin comes into contact with the engaging hole formed in the lower end of the building, and the upper locking pin Penetrates into the engagement hole to complete the engagement of the upper scaffolding frame.

When removing the upper scaffolding frame, the operation lever protruding from the opening of the collar body is stepped on with a foot or the like and the operation lever is pushed down, and the rear portion of the operation lever located inside the connecting pipe is depressed. The end presses the metal fitting main body, and the metal fitting main body is pushed back in the direction opposite to the projecting direction of the upper locking pin centering on the lower end contacting the inner circumference of the short pipe of the connecting pipe. The upper locking pin attached to the upper end is sunk from the side of the short pipe of the connecting pipe to release the engagement with the engaging hole of the building, and the upper scaffolding frame can be easily removed.

[0009]

【Example】

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

FIG. 1 is a perspective view showing a connecting pipe of the present invention. In the connecting pipe 11, a collar body 13 as a stepped portion is fitted and fixed near a central portion of a short pipe 12 having a predetermined length. . An upper through hole 15 is formed on the side surface of the short pipe 12 above the collar body 13 for engaging and disengaging an upper locking pin 14 for locking the building 2 of the scaffolding frame 1 to be assembled higher. A lower through hole 17 is formed on a side surface at a position lower than the body 13 to allow a lower engaging pin 16 for attaching the connecting pipe 11 to the upper portion of the building 2 of the scaffolding frame 1 to project and retract.

On the side surface of the collar body 13, an operating lever 18 for protruding and retracting the upper locking pin 14 is projected from a collar body opening 19 which is a notch in the collar body 13.

Reference numeral 20 denotes a locking metal fitting composed of the upper locking pin 14 and the lower locking pin 16, a metal fitting main body 21 and a panel body 22, and has a substantially U-shaped cross section as shown in FIG. The upper end and the lower end of the vertically elongated metal fitting main body 21 are provided with pin mounting holes 23 and 24 on both side surfaces having a substantially U-shaped cross section, and the pin mounting hole 23 has a tapered upper end. The upper locking pin 14 is loosely fitted, and the pin mounting hole 24 is loosely fitted with a lower locking pin 16 having a tapered lower end.

Further, on the side surfaces of the upper locking pin 14 and the lower locking pin 16, locking grooves 25 and 26 for locking the spring body 22 are engraved in a part along the circumference, and have a substantially V shape. The bent spring body 22 is inserted into the recess of the metal fitting main body 21, and the spring end fitting portions 27 and 28 provided at both ends of the spring body 22 are engaged with the upper locking pin 14 and the lower locking pin 16 respectively. It is fitted in the stop grooves 25 and 26 to prevent the locking pins 14 and 16 from coming off.

Further, when the bent portion 29 of the spring body 22 is projected from the spring body protruding portion 30 formed by cutting out the rear surface side of the metal fitting main body 21 and the locking metal fitting 20 is inserted into the short pipe 12. The bent portion 29 of the spring body 22 is brought into contact with the inner wall of the short tube 12 to urge the respective locking pins 14 and 16 forward so as to project from the upper through hole 15 and the lower through hole 17. . Further, a slit 31 for receiving the operation lever 18 is formed near the upper end of the front surface of the metal fitting main body 21.

As shown in FIG. 5, the operating lever 18 has an operating lever main body portion 18 a that abuts against both side edges of the slit 31 on the front surface of the metal fitting main body 21, and a protruding portion below the operating lever main body portion 18 a so that the operating lever 18 is fitted into the slit 31. It comprises a protruding piece 18b to be inserted and a lever portion 18c extending obliquely upward from the upper portion of the operation lever body 18a.

The operating lever 18 is inserted into the short pipe 12 in advance before inserting the locking metal fitting 20 into the short pipe 12, and the lever portion 18 c is moved from the inside of the short pipe 12 to the outside through the collar body opening 19. Leave it protruding. Then, the locking metal fitting 20 is inserted into the short pipe 12, the protruding piece 18b of the operation lever 18 is fitted into the slit 31 thereof, and the metal fitting main body is brought into contact with the operation lever main body portion 18a by vertically moving the lever portion 18c. 21 can be rocked back and forth.

Reference numeral 32 denotes a spring-body-storing cutout portion that is cut out in order to smoothly store the bent portion 29 of the protruding spring body 22 when the locking fitting 20 is inserted into the short pipe 12.

Next, a case where the connecting pipe 11 is attached to the scaffolding frame 1 and a case where the scaffolding frame 1 is attached to and detached from the connecting pipe 11 will be described with reference to FIGS. 6 to 9.

FIG. 6 shows a state in which the connecting pipe 11 is inserted into the upper end of the building 2 of the scaffolding frame 1, and there is a gas vent hole 7 in the building 2 as in the galvanized scaffolding frame 1. The lower locking pin 16 protruding from the side surface of the connecting pipe 11 is slightly rotated so that the position thereof does not coincide with the position of the gas vent hole 7, and the position is shifted and inserted. At this time, the lower locking pin 16 is pushed in with a finger, or the taper portion of the lower surface of the lower locking pin 16 is applied to the upper edge of the building 2 and the spring body 22 is inserted while being retracted.

When the lower locking pin 16 passes through the gas vent hole 7, the connecting pipe 11 is re-positioned so that the position of the lower locking pin 16 faces the regular engagement hole 8 formed in the upper part of the building 2. When the lower locking pin 16 is rotated to match the engaging hole 8, the lower locking pin 16 is pushed back by the restoring force of the spring body 22 so that the lower locking pin 16 projects from the engaging hole 8 and the connecting pipe 11 is It is connected to the upper part of the building 2.

When assembling the scaffolding frame, another scaffolding frame 1 ′ is lifted above the scaffolding frame 1 to which the connecting pipe 11 is attached, and the scaffolding frame 1 ′ is lifted up as shown in FIG. The lower end of the ground 2'is inserted into the upper part of the connecting pipe 11.

When the lower end of the building 2 ′ comes into contact with the upper locking pin 14 of the short pipe 12, the lower end of the building 2 ′ descends along the tapered portion of the upper locking pin 14, so that the upper locking pin 14 Will be immersed in the short tube 12.

When the building 2'is further inserted, as shown in FIG. 8, the upper locking pin 14 submerged in the short pipe 12 comes into contact with the engaging hole 8'under the building 2 '. The upper locking pin 14 is fitted into the engaging hole 8 to complete the insertion of the upper scaffolding frame 1 '. In this way, scaffolding frames will be built up in sequence.

When the upper scaffolding frame is to be removed, as shown in FIG. 9, the lever portion 18c of the operation lever 18 is stepped on with a foot or the like and pushed down. When the lever portion 18c is pushed down, the rear end portion of the operation lever body 18a pivots upward, and the metal fitting main body 21 that abuts is retracted. At this time, the metal fitting main body 21 rotates around the lower end portion in contact with the inner surface of the short pipe 12, and the upper locking pin 14 is retracted while pushing down the spring body 22 mounted on the metal fitting main body 21.

When the operation lever main body 18a becomes substantially perpendicular to the metal fitting main body 21, the metal fitting main body 21 and the inner surface of the short pipe 12 compete with each other to fix the operation lever main body 18a and the upper locking pin 14 to the short pipe. It is possible to remove the building site 2'of the upper scaffolding frame 1'while being kept in the submerged state. After pulling out the building 2'and pushing up the lever portion 18c to return it to its original position, the metal fitting main body 21 is pushed back by the spring body 22 and the upper locking pin 14 can be projected as it was.

When the connecting pipe 11 inserted into the upper end of the building 2 of the scaffolding frame 1 is pulled out, the lower locking pin 16 is pushed inward and then pulled out.

[0027]

[Effect of device]

 As described above, in the scaffold frame connecting pipe according to the present invention, the upper locking pin 14 is provided in the pin mounting hole 23 at the upper end of the metal fitting main body 21, and the lower locking pin 16 is provided in the pin mounting hole 24 at the lower end. Is loosely fitted, and the upper locking pin 14 and the lower locking pin 16 are bent into a substantially V shape and attached to both ends of the spring body 22 attached to the metal fitting main body 21 to form the locking metal fitting 20. An upper through hole in which the locking metal fitting 20 is inserted into the short pipe 12 of the connecting pipe 11 and the upper locking pin 14 is formed on the side surface of the short pipe 12 above the collar body 13 by the spring body 22. 15 and the lower engaging pin 16 is protruded from a lower through hole 17 formed on the side surface of the short tube 12 below the collar body 13 and is short in the collar body opening portion 19 opened in the collar body 13. The operation lever 18 is projected from the inside of the pipe to the outside, and the operation lever 1 The rear end is brought into contact with the front surface above the central portion of the metal fitting main body 21, and the metal fitting main body 21 is swung back and forth by vertically operating the operating lever 18 so that the upper locking pin 14 can be retracted from the upper through hole 15. Since the upper scaffolding frame can be easily attached to and detached from the connecting pipe 11, the attachment and detachment work of the scaffolding frame can be efficiently performed.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of a connecting pipe for scaffolding frames according to the present invention.

FIG. 2 is an exploded perspective view of a locking fitting.

FIG. 3 is a front view of a scaffolding frame connecting pipe according to the present invention.

FIG. 4 is a plan view of FIG.

FIG. 5 is a perspective view showing an operation lever.

FIG. 6 is an explanatory view showing a state in which the connecting pipe is inserted in the upper part of the scaffolding frame.

FIG. 7 is an explanatory view showing a state in which another scaffolding frame is inserted from the upper side into the connecting pipe attached to the scaffolding frame.

FIG. 8 is an explanatory view showing a state immediately before connecting the upper and lower scaffolding frames with a connecting pipe.

FIG. 9 is an explanatory diagram showing a state in which the upper scaffolding frame of the coupled scaffolding frames is about to be separated.

FIG. 10 is an explanatory diagram showing an example in which a connecting pipe is attached to an upper portion of a scaffolding frame.

FIG. 11 is a perspective view showing a structure of a conventional connecting pipe and a scaffolding frame at a lower end portion of a building.

[Explanation of sign]

11 ... Connection pipe 12 ... Short pipe 13 ... Collar body 14 ... Upper locking pin 15 ... Upper through hole 16 ... Lower locking pin 17 ... Lower through hole 18 ... Operation lever 19 ... Collar body opening 20 ... Locking metal fitting 21 ... Mainly metal fittings 22 ... Spring body

Claims (1)

[Scope of utility model registration request] 1. A scaffolding frame connecting pipe for connecting upper and lower building frames of a temporary scaffolding by fitting a collar body as a stepped portion in the vicinity of a central portion of a short pipe, wherein a pin at the upper end of a vertically long metal fitting is mainly used. The upper locking pin was loosely fitted in the mounting hole and the lower locking pin was loosely fitted in the pin mounting hole at the lower end, and the upper locking pin and the lower locking pin were bent into a substantially V shape and mounted mainly on the metal fittings. Attach to both ends of the spring body to form locking metal fittings, insert the locking metal fittings into the short pipe of the connecting pipe, and use the spring body to pierce the upper locking pin on the side of the short pipe above the collar body. It is projected from the upper through hole provided and the lower locking pin is projected from the lower through hole formed on the side of the short tube below the collar body. The operation lever is projected toward the outside, and the rear end of the operation lever is located above the central portion of the metal fitting. A connecting pipe for a scaffolding frame, which is configured to be brought into contact with the front surface of the scaffold and to swing the main part of the metal fitting back and forth by operating the operating lever up and down so that the upper locking pin can be retracted from the upper through hole.