JPH0713981U - 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 engaging rod 14 that is locked to an upper scaffolding frame and functions as a retaining member is provided on a connecting pipe 10 so as to be retractable by a spring body 15 and a lever body 17. When the lever portion 17b of the lever body 17 is pushed down, the engagement rod 14 can be pulled out while compressing the spring body 15. Further, when the lever body 17 is pulled up, the engaging rod 14 is pulled in by the restoring force of the spring body 15, and the tip of the engaging portion 14a is engaged with the locking hole 24 of the tube body 11.
I'm trying to get in. If the scaffolding frame is inserted into the connecting pipe 10 from above, the tip of the engaging portion 14a of the engaging rod 14 is inserted into the locking hole in the building of the scaffolding frame, and the scaffolding frame can be firmly connected.

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. 7, 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. A spring is formed by forming a through hole in the bent part that is bent in a V shape, and one end is bent in a substantially U shape to be an engaging part, and a retaining pin is attached to the other end. A pin for use for forming an engaging rod by forming an engaging rod, and inserting the spring body into the tubular body through an end opening so that the through hole of the spring body is fitted into the through hole of the tubular body in a penetrating manner. Insert the engaging rod from the collar side through the above-mentioned through hole and through hole, insert a retaining pin into the pin mounting hole of the engaging rod located on the back surface of the spring body, and further engage the engaging rod. A locking hole for locking the tip of the joint is drilled in the pipe body, and at the engaging portion of the engaging rod, the tip of the engaging portion is operated so that it can be automatically retracted from the locking hole. It is prepared by attaching the over body.

[0006]

[Action]

 According to the present invention, the engaging rod that locks to the scaffolding frame and serves as a retaining function is provided in the connecting pipe so as to be retractable and retractable.When stacking the scaffolding frame, first, the coupling rod inserted into the lower scaffolding frame Push down the lever body of the tube. When the lever body is pushed down, the engagement rod is pulled out while compressing the spring body. When the lever body is completely pushed down, the engaging rod is fixed in the pulled out state. In this state, the scaffolding frame to be stacked next is fitted into the connecting pipe, and when fitting is completed, the lever body of the engaging rod is raised, and if the fixing of the engaging rod is released, the engaging rod is pulled in by the restoring force of the spring body. , The tip of the engaging portion is locked in the locking hole of the scaffolding frame to perform a retaining function. If the upper surface of the tip of the engaging part of the engaging rod is inclined toward the tip and cut out to fit the scaffolding frame from above, the impact will cause it to escape slightly to the rear, so it is possible to attach the scaffolding frame with one touch. it can.

In addition, in order to remove the scaffold frame, similarly to the above, the lever body of the engaging rod is pushed down to pull out the engaging rod against the restoring force of the spring body, and the lever body is completely pushed down to pull the engaging rod. It can be easily removed by holding it out and then lifting the scaffolding frame.

[0008]

【Example】

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

First, referring to FIGS. 1 to 3, 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 denotes an engaging rod which has an engaging portion 14a formed by bending one end into a substantially U shape, and which has a retaining function, and which can be retracted into the through hole 13 on the side surface of the collar 12. It is provided. As shown in FIG. 3, when mounting the engaging rod 14, the engaging rod 14 and the spring body 15 bent into a substantially V shape, the retaining pin 16 of the engaging rod 14 and the engaging rod 1 are attached. A lever body 17 for retracting the lever 4 and a lever body mounting pin 18 for mounting the lever body 17 on the engaging rod 14 are prepared.

In the bent portion of the spring body 15, a through hole 19 having substantially the same diameter as the diameter of the through hole 13 is bored, and a recess 20 for locking the retaining pin 16 is formed. Further, the engagement rod 14 is provided with a retaining pin mounting hole 21 for mounting the retaining pin 16. The lever body 17 is composed of a lever main body 17a having a substantially U-shaped cross section and a lever portion 17b protruding obliquely upward from an upper portion of the lever main body 17a. The lever main body 17a has an upper end portion provided with a lever body mounting pin. A lever body mounting pin support hole 22 for inserting and supporting 18 is provided. Further, the engaging portion 14a of the engaging rod 14 is provided with a lever body mounting pin insertion hole 23 into which the lever body mounting pin 18 is inserted.

Then, the spring body 15 is inserted from the end opening of the tube body 11 so that the through hole 19 of the spring body 15 and the through hole 13 of the tube body 11 are inserted and matched. Next, the engaging rod 14 is penetrated through the through hole 13 and the through hole 19 from the side of the collar 12 and projected from the through hole 13 on the other side. At this time, the recessed side (front side) of the spring body 15 bent in a substantially V shape is positioned on the engagement portion 14a side.

Subsequently, the engagement portion 14 a of the engagement rod 14 is slightly rotated by hand to direct the retaining pin mounting hole 21 of the engagement rod 14 toward the end opening side of the tube 11. Then, the retaining pin 16 is inserted from the end opening of the pipe body 11, and the bent portion of the spring body 15 is pressed to the front side so that the retaining pin located on the bent side (rear side) of the spring body 15 Insert the retaining pin 16 into the mounting hole 21. Then, the engaging portion 14a is slightly rotated again to fit the retaining pin 16 into the recess 20 formed in the bent portion of the spring body 15, and the restoring force of the spring body 15 causes the engaging portion of the engaging rod 14 to be engaged. 14a is pulled toward the tube body 11 side so that the tip of the engaging portion 14a is immersed in the locking hole 24 formed in the tube body 11.

Further, the lever body mounting pin support hole 22 provided in the lever main body portion 17a and the lever body mounting pin insertion hole 23 provided in the engaging portion 14a of the engaging rod 14 are made to coincide with each other in an insertion shape, and these The lever body mounting pin 18 is inserted into the hole to attach the lever body 17 to the engaging rod 14. At this time, the lever body mounting pin support hole 22 has substantially the same diameter as the lever body mounting pin 18, and the lever body mounting pin insertion hole 23 is made slightly larger to allow the lever body 17 to rotate about the lever body mounting pin 18. . Then, the lower end of the lever main body 17a is pressed against the side surface of the collar 12 by the downward rotation of the lever portion 17b so that the engaging rod 14 can be pulled out while compressing the panel body 15. Further, the engaging rod 14 is pulled in by the restoring force of the spring body 15 by the upward rotation of the lever portion 17b. In this way, by operating the lever portion 17b, the engaging rod 14 can be freely retractable.

Reference numeral 25 is a pin hole into which a mounting pin for fixing the connecting pipe 10 to the lower scaffolding frame is inserted.

Next, a method of using the connecting pipe 11 will be described with reference to FIGS. 4 to 6. When the scaffolding frames 1 are piled up, as shown in FIG. 4, they are connected to the building site 1a of the lower scaffolding frame 1. Insert the pipe body 11 of the pipe 10, align the pin hole 26 formed in the upper part of the building 1a with the pin hole 25 of the connecting pipe 10 and insert the mounting pin 27, and use the split pin 28 to prevent it from coming off. The connecting pipe 10 is fixed.

Next, the lever portion 17b of the connecting pipe 10 is pushed down to rotate the lever main body portion 17a about the lever body mounting pin 18, and the lower end portion of the lever main body portion 17a is pressed against the collar 12 while engaging. The joint rod 14 is pulled out and the engaging portion 14a is pulled out from the locking hole 24 of the pipe body 11. When the lever portion 17b is completely pushed down, the lever body portion 17a becomes substantially horizontal, and when the lower end portion of the lever body portion 17a is pressed against the side surface of the collar 12, the lever body portion 17a maintains the horizontal state and is engaged. The tip portion of the portion 14a can be kept in a state of being pulled out from the locking hole 24.

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 29 is formed which is fitted in the locking hole 24 of the connecting pipe, and the locking hole 29 of the building 1a of the inserted scaffolding frame 1 is formed. And the locking hole 24 of the connecting pipe are aligned.

Next, when the lever portion 17b of the engagement rod 14 is raised, the engagement rod 14 is sunk into the pipe body 11 as shown in FIG. 5 due to the restoring force of the compressed spring body 15. The tip of the engaging portion 14a of the engaging rod 14 is inserted into the engaging hole 29 of the scaffolding frame 1 below the building 1a and the engaging hole 24 of the connecting pipe 10 to be engaged therewith. This firmly connects the upper and lower scaffolding frames.

FIG. 6 shows a state in which the upper scaffolding frame is attached to the connecting pipe 10 by one-touch operation. The engaging rod 14 is formed by cutting out the upper end of the engaging portion 14a to form the inclined portion 14b. If the building 1a of the scaffolding frame 1 is inserted from above and dropped, the lower end of the building 1a abuts the inclined portion 14b and the impact force causes the engaging rod 14 to move backward as shown in FIG. You can attach the scaffolding frame while pushing it slightly. When the scaffolding frame is attached, the locking hole 29 of the building 1a and the locking hole 24 of the connecting rod 10 coincide with each other in an insertion shape, and the restoring force of the spring body 15 causes the tip of the locking portion 14a of the engaging rod 14 to move to the building. The locking hole 29 of 1a and the locking hole 24 of the connecting rod 10 are inserted and locked, and can be mounted with one touch.

When removing the scaffolding frame, similarly to the case shown in FIG. 4, the lever portion 17b of the connecting pipe 10 is pushed down to fix the lever main body portion 17a in a rotated state, and the engagement rod 14 is engaged. The joint portion 14a is held in a state of being pulled out from the locking hole 29 of the building 1a. Then you can easily remove it by lifting the scaffolding frame in this state.

[0022]

As described above, according to the present invention, the engaging rod 14 that locks the connecting pipe 10 to the upper scaffolding frame and functions as a retainer can be retracted by the spring body 15 and the lever body 17. If the lever 17 is pushed down, the lever 17 is pushed down to pull out the engaging rod 14 to pull out the rod 15 while compressing it, and the lever 14 can be held in the pulled-out state. The engaging rod 14 is pulled in by the restoring force of the spring body 15, and the tip of the engaging portion 14a enters into the engaging hole 29 of the building 1a of the scaffolding frame 1 to prevent it from slipping out. It becomes unnecessary and the number of parts is reduced. Assembling and dismantling the temporary scaffolding can be done easily and quickly, and the work efficiency can be improved.

[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 perspective view illustrating the same component.

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

FIG. 7 is a perspective view of a temporary scaffold.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Scaffolding frame 1a ... Building of scaffolding frame 10 ... Connecting pipe 11 ... Pipe body 12 ... Collar 13 ... Through hole 14 ... Engaging rod 14a ... Engaging portion 15 ... Spring body 16 ... Retaining pin 17 ... Lever body 17a ... Lever body 17b ... Lever 19 ... (of spring body)
Through hole 21 ... (for engaging rod) pin mounting hole 24 ... Locking hole

Claims (1)

[Scope of utility model registration request] 1. A collar having a proper length is fitted and fixed to the outer periphery of a 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. A through hole is formed in the bent part to form a spring body, and one end is bent into a substantially U-shape to form an engaging part, and the other end is provided with a pin mounting hole for attaching a retaining pin. Is provided to form an engagement rod, the spring body is inserted into the pipe body through an end opening so that the through hole of the spring body is inserted into the through hole of the pipe body and the engagement rod is arranged from the collar side. While inserting by inserting the through hole and the through hole,
A retaining pin is attached to a pin mounting hole of the engaging rod located on the back surface of the spring body, and a locking hole for locking the tip of the engaging portion of the engaging rod is formed in the pipe body, and the engaging rod is also provided. A connecting pipe for a scaffolding frame, wherein a lever body for operating the tip of the engaging portion with respect to the locking hole so as to be retractable and retractable is attached to the engaging portion.