JPH0713982U - Connection pipe for scaffolding frame - Google Patents

Abstract

(57) [Summary] [Purpose] The connecting pipe that connects the scaffolding frames vertically has a retaining function. [Structure] An upper locking pin 16 and a lower locking pin 17 are provided at both ends of a spring body 15 bent into a connecting pipe 10 in a substantially V shape.
The locking metal fitting 14 that projects the
An operating rod 21 having a lever 22 for rotation is attached to penetrate 4 and the inclined stepped surface formed on the operating rod 21 is brought into contact with the upper side portion of the spring body 15. And rotation lever 2
When 2 is rotated, the tip end of the inclined stepped surface rotates while abutting the spring body 15 to swing the spring body 15, whereby the upper locking pin 16 causes the upper locking pin 16 to move.
It can be freely retracted from the upper locking hole 19 and serves as a stopper.

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 construction work of a building, as shown in Fig. 6, a scaffolding frame 1 is stacked near the building in multiple steps according to the height of the building to form a temporary scaffolding. For stacking the scaffolding frame 1, a connecting pipe 2 formed by fitting and fixing a collar having the same diameter as the building pipe diameter of the scaffolding frame 1 to the outer periphery of the central portion of a pipe body of an appropriate length is used. The arm lock 3 is engaged with the locking pins provided on the upper and lower scaffolding frames 1 to prevent disengagement.

[0003]

[Problems to be solved by the device]

 However, when assembling and disassembling the scaffolding frame, attachment and detachment of the arm lock is troublesome and time-consuming.

In view of the above points, the present invention devises the structure of the connecting pipe so that the connecting pipe has a retaining function so that the scaffolding frame can be firmly connected without using an arm lock. It is intended to provide a connecting pipe for a frame.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention has a collar fitted and fixed to the outer periphery of the central portion of a tubular body of appropriate length, and a through hole penetrating the collar and the tubular body is provided on the side surface of the collar. An upper locking pin is projected from the upper end of the spring body bent in a V shape, a lower locking pin is projected from the lower end, and a through hole is bored in the upper side of the substantially V shape to lock the metal fitting. Is formed, and one end side is bent into a substantially L-shape to form a lever for rotation, and the other end side is formed into a stepped shape and an operating rod is formed as a spring body penetrating part with an inclined stepped surface. Then, insert the spring body into the tube through the end opening, insert the upper locking pin into the upper locking hole in the upper part of the tube, and the lower locking pin into the lower locking hole so that the spring body can retract. The through hole of the pipe into the through hole of the pipe so that the operating rod is inserted from the collar side through the through hole and the through hole. And a upper portion and the stepped surface is inclined abut, and further provided with anchoring means at the distal end of the spring body penetration portion of the operating rod which projects Ri by color side.

[0006]

[Action]

 According to the present invention, a locking pin that locks to a scaffolding frame and functions as a retainer is provided in the connecting pipe so that it can be retracted, and the scaffolding frame is stacked on the connecting pipe that is inserted and attached to the lower scaffolding frame. At this time, first, the lever for rotation of the operating rod attached to the connecting pipe is rotationally operated, and the inclined stepped surface of the operating rod is rotated while being brought into contact with the upper side of the locking metal fitting made of the spring body. Push the upper side of the locking metal fitting back so that the upper locking pin is submerged in the tube.

Next, the scaffolding frame to be stacked on top is fitted into the connecting pipe, and when the fitting is completed, the lever for rotation of the operating rod is rotated to return it to the original position. As a result, the restoring force of the locking metal fitting made of a spring body causes the upper locking pin to project from the pipe body, and this upper locking pin is inserted into the locking hole of the scaffolding frame to perform a retaining function. . If the upper surface of the upper locking pin is inclined toward the distal end and cut out so that the scaffolding frame fits in from above, the impact will cause the upper locking pin to escape slightly backward, so the scaffolding frame will be touched. It can also be installed with.

In addition, as for the removal of the scaffolding frame, in the same manner as described above, the rotation lever is rotated to push back the locking metal fitting so that the upper locking pin is sunk from the pipe body, and then the scaffolding frame is lifted up. Can be easily removed.

[0009]

【Example】

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

First, referring to FIGS. 1 and 2, reference numeral 10 denotes a connecting pipe for connecting scaffolding frames, which has a proper length and has an outer diameter slightly smaller than the inner diameter of the building pipe of the scaffolding frame. A collar 12 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 11, and a through hole 13 penetrating the collar 12 and the pipe body 11 is formed on the side surface of the collar 12. There is.

Reference numeral 14 is a metal fitting for locking the scaffolding frame. As shown in FIG. 1, an upper locking pin 16 is provided at the upper end of a spring body 15 bent in a substantially dogleg shape, and a lower end is provided at the lower end. The lower locking pin 17 is projected, and a through hole 18 slightly smaller than the through hole 13 is formed in the upper side of the spring body 15. In addition, an upper locking hole 19 that allows the upper locking pin 16 and the lower locking pin 17 of the locking metal member 14 to be inserted and retracted when the locking metal member 14 is inserted into the pipe member 11 in the pipe body 11. Also, a lower locking hole 20 is formed.

Reference numeral 21 is an operating rod for swinging the locking metal fitting 14, and forms a rotation lever 22 which is bent when one end is bent into a substantially L-shape and is gripped when rotating as shown in FIG. The other end has a stepped portion to form a spring body penetrating portion 23 by thinning a part of the tip portion to a diameter that penetrates the through hole 18 formed in the spring body 15. The stepped surface is inclined according to the inclination angle of the upper side of the spring body 15. Further, a retaining pin attaching hole 25 for attaching the retaining pin 24 is provided at the tip of the spring body penetrating portion 23.

Then, the locking metal fitting 14 is inserted into the pipe body 11 through the end opening of the pipe body 11, and the upper locking pin 16 and the lower locking pin 17 of the locking metal fitting 14 are inserted into the pipe body 11. The upper locking hole 19 and the lower locking hole 20 are exposed. Subsequently, the spring body penetration portion 23 of the operating rod 21 is inserted into the through hole 13 from the side surface of the collar 12, and the spring body penetration portion 23 is also penetrated through the through hole 18 of the spring body 15 of the locking metal fitting 14. The tip is projected to the other side of the collar 12. A retaining pin 24 is attached to the retaining pin mounting hole 25 of the protruding spring body penetration portion 23 so that the operating rod 21 does not fall out.

Next, a method of using the connecting pipe 11 will be described with reference to FIGS. 3 to 5. When the scaffolding frames 1 are piled up, as shown in FIG. 3, they are connected to the building site 1 a of the scaffolding frame 1 in the lower stage. The pipe body 11 of the pipe 10 is inserted and the connecting pipe 10 is attached. At this time, the lower locking pin 17 of the connecting pipe 10 is pushed into the tubular body 11 with a finger or the like to fit the tubular body 11 into the building 1a, and the lower locking pin 17 is bored in the upper portion of the building 1a. The connecting pipe 10 is projected from 26 and locked and fixed to the upper part of the building 1a.

Next, the rotation lever 22 of the operating rod 21 attached to the connecting pipe 10 is rotated to make the rotation lever 22 face downward. The inclined stepped surface of the operating rod 21 rotates while contacting the upper side portion of the spring body 15, and the tip end of the stepped surface pushes back the upper side portion of the spring body 15. When the upper side of the spring body 15 is retracted, the upper locking pin 16 at the upper end of the spring body 15 is set in the pipe body 11 as shown in FIG.

In this state, the building 1a of the scaffolding frame 1 to be stacked on the upper stage is inserted from above as shown in FIG. In the lower part of the building 1a of the scaffolding frame 1, a locking hole 27 which is inserted in the upper locking hole 19 of the connecting pipe 10 is formed. The locking hole 27 of the inserted scaffolding frame 1 is locked in the building 1a. The hole 27 and the upper locking hole 19 of the connecting pipe are aligned with each other.

Next, when the rotation lever 22 is rotated back to the original position, the upper locking pin 16 is locked by the restoring force of the pressed spring body 15 as shown in FIG. The building 1a of the scaffolding frame 1 is locked and fixed by projecting from the hole 19 and the locking hole 27 of the building 1a. Further, FIG. 5 shows a state in which the upper stage scaffolding frame is attached to the connecting pipe 10 with one touch, and the upper end of the upper locking pin 16 of the connecting pipe 10 is cut out to form an inclined portion. Then, if the building 1a of the scaffolding frame 1 is inserted from above and dropped in, the lower end of the building 1a comes into contact with the inclined portion of the upper locking pin 16 and the impact force causes the upper locking pin 16 to move slightly backward. You can attach scaffolding frame while pushing. When the scaffolding frame is attached, the locking hole 27 of the building 1a and the locking hole 19 of the connecting rod 10 coincide with each other in an insertion shape, and the restoring force of the spring body 15 causes the upper locking pin 16 to move into the locking hole of the building 1a. 27 and the locking hole 19 of the connecting rod 10 are inserted and locked, and can be mounted with one touch.

When the scaffolding frame 1 is removed, the rotation lever 22 of the connecting pipe 10 is rotated to hold the upper locking pin 16 in the retracted state, as shown in FIG. Then you can easily remove it by lifting the scaffolding frame in this state.

[0019]

[Effect of device]

 As described above, according to the present invention, the metal fitting for locking in which the upper locking pin 16 and the lower locking pin 17 are projected at both ends of the spring body 15 bent in the connecting pipe 10 in a substantially V shape. 14 is mounted inside, an operating rod 21 having a rotation lever 22 is attached through the locking metal fitting 14, and the inclined stepped surface formed on the operating rod 21 is attached to the spring body 15 of the locking metal fitting 14. The upper locking pin 16 is configured to be retractable from the upper locking hole 19 of the connecting pipe 10 by contacting the upper side portion and swinging the spring body 15 by rotating the rotating lever 22. Since it has a retaining function, the conventional arm lock is not required, the number of parts is reduced, and the temporary scaffold can be assembled and disassembled easily and quickly to improve work efficiency.

[Brief description of drawings]

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

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

FIG. 3 is a partially cutaway front view illustrating a mounting state of the connecting pipe of the present invention.

FIG. 4 is a partially cutaway front view illustrating a mounting state of the connecting pipe of the present invention.

FIG. 5 is a partially cutaway front view illustrating a mounting state of the connecting pipe of the present invention.

FIG. 6 is a perspective view of a temporary scaffold.

[Explanation of symbols]

 1 ... Scaffolding frame 1a ... Building of scaffolding frame 10 ... Connection pipe 11 ... Pipe body 12 ... Collar 13 ... Through hole 14 ... Locking metal fitting 15 ... Spring body 16 ... Upper locking pin 17 ... Lower locking pin 18 ... Through hole 19 ... Upper locking hole 20 ... Lower locking hole 21 ... Operating rod 22 ... Rotating lever 23 ... Spring body penetration part 24 ... Prevention pin (prevention means)

Claims (1)

[Scope of utility model registration request] 1. A collar having a proper length is fitted and fixed to the outer periphery of the central portion of the tubular body, and a through hole penetrating the collar and the tubular body is provided on a side surface of the collar, and the collar is bent into a substantially V shape. The upper locking pin is projected on the upper end of the spring body, the lower locking pin is projected on the lower end, and a through hole is formed in the upper side of the generally dogleg shape to form a locking metal fitting. Is bent into a substantially L shape to form a lever for rotation, and the other end side is formed into a stepped shape and a stepped surface is formed into a spring body penetrating portion to form an operating rod. Insert the upper locking pin into the upper locking hole in the upper part of the pipe body, insert the lower locking pin into the lower locking hole so that it can be retracted, and insert the through hole of the spring into the body. A stepped surface which is fitted in a through hole, and the operating rod is made to penetrate the through hole and the through hole from the collar side and is inclined with respect to the upper side portion. Brought into contact, further scaffolding frame for connection pipe, characterized in that a anchoring means to the distal end of the spring body penetration portion of the operating rod projecting from the color aspect.