JPH083267B2 - Frame scaffolding joint - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint for a frame scaffold used at a construction site or the like.

[0002]

2. Description of the Related Art A frame scaffolding for a construction site or the like is assembled by engaging a lower part of an upper building frame and an upper part of a lower building frame with each other.

The upper and lower building frames are engaged with each other by a separate plate-shaped member generally called an arm lock. This plate-shaped body has connection holes at both ends, and it is mounted through pins and bolts to fix the upper and lower building frames to each other.

Further, in order to solve these problems, the inventor of the present invention has filed Japanese Utility Model Application No. 4-78851 (Actual Development No. 6-3).
5504), "A framework scaffolding joint having a lock portion provided on a cylindrical body, wherein the cylinder body has a plurality of holes on its peripheral surface, and the lock portion has a plurality of protrusions on a plate-like body. A plate of the pressing protrusion is provided with a connecting protrusion formed so that the tip of the building frame insertion side protrusion is an inclined surface that inclines toward the inserting side so as to protrude from the engagement hole of the cylindrical body, and the other side is formed as a pressing protrusion higher than the connecting protrusion. We propose a "frame joint scaffold joint characterized in that a spring coupling projection is provided on the back side of the body, and a spring whose one end is in contact with the inner circumferential surface of the cylindrical body is coupled to the spring coupling projection".

[0005]

However, in the conventional joint of the frame scaffold, since it is a separate plate-shaped body, it is necessary to attach the pins and bolts of each plate-shaped body each time the frame scaffold is assembled. There was a problem that it took a lot of work.

Therefore, there are cases where the mounting is troublesome and there are cases where the mounting is not possible, and there are many problems in terms of safety.

Further, since it is a separate body, there is a problem that the frame scaffold is often lost during disassembly or transportation.

Further, in Japanese Patent Application No. 4-78851 (see Japanese Utility Model Application Laid-Open No. 6-35504) that solves these problems, when the building frame is pulled out, the pressing protrusions must be continuously pressed, and There is a problem that it takes time to manufacture and assemble the joint.

An object of the present invention is to obtain a joint for frame scaffolding in which even a small number of workers can connect and dismantle the building frames with each other by a very simple work, and the manufacturing and assembling are easy.

[0010]

[Means for Solving the Problems] In order to achieve this purpose,
The present invention is a frame scaffolding joint comprising a lock member provided on a cylindrical body, wherein the cylinder body is provided with an engagement hole and a support hole on a peripheral surface thereof, and the lock portion is formed by bending a round rod-shaped body. The insertion side has one end as the engaging end and the end face is formed as an inclined surface so that it can be engaged with the engagement hole of the cylindrical body and can be slidably inserted into the circular support hole of the cylindrical body with the other end as the support portion. However, the support part is provided with a spring in the cylindrical body and a guide body on the end side, and the guide body is a hollow cylindrical body, and the outer shape of the outer side of the cylindrical body is cylindrical and the outer shape of the inner side of the cylindrical body is prismatic. ,
It is slidable with the rectangular support hole of the cylinder.

Further, the present invention is a framework scaffolding joint comprising a lock member provided in a cylindrical body, wherein the cylinder body has an engaging hole, a support hole and a belt-like member on its peripheral surface, and the lock member has a round bar-like member. It is formed by bending the building frame insertion side, one end is a locking end and the end face is formed into an inclined surface so that it can be engaged with the engaging hole of the cylindrical body, and the other end side is a support part and the strip shape of the cylindrical body. It is slidably inserted into a circular support hole provided in the body, the support part has a spring inside the cylinder, and the guide body is provided at the end side, and the guide body is a hollow cylinder, and the outer shape of the cylinder outside Is a cylindrical shape, and the outer shape on the inner side of the cylindrical body is a prismatic shape, and is slidable with a rectangular support hole of the cylindrical body.

[0012]

Function: The cylinder is fixed to one of the building frames, usually the lower building frame. The other building frame, usually the upper building frame, is inserted from the opening side of the cylindrical body fixed to the upper part of the lower building frame through the opening.

Then, the building frame pushes the inclined surface of the end of the round rod-shaped body which is the lock portion, and the entire lock portion resists the spring in the cylindrical body and moves to the outside of the cylindrical body, while the upper building frame moves downward. Is inserted. If you continue to insert the upper building frame as it is, it will hit the engaging hole of the upper building frame, so the engaging end will be inserted into the engaging hole of the upper building frame and the engaging hole of the cylindrical body by the biasing force of the spring. To be done.

At this time, since the support portion of the lock portion passes through the circular support hole of the cylindrical body and is fitted into the square support hole of the cylindrical body by the prismatic portion of the guide body provided at the end, the lock portion is supported. Insert into the original engagement hole without rotating. As a result, the upper and lower building frames are automatically engaged.

When the upper and lower building frames are disengaged from each other, the lock portion, which is a round bar, is pulled with a finger or the like against the biasing force of the spring to engage the engaging end portions. Remove from the hole.
Then, the guide body moves from the prismatic outer shape to the cylindrical outer shape due to the engagement of the rectangular support holes of the cylindrical body. When the lock part is rotated in this state, the engaging end part of the lock part disengages from the engaging hole, moves to the left and right, is positioned on the surface of the cylindrical body, and the operator disengages it in the disengaged state. Can be separated.

As a result, the upper frame and the joint are disengaged, so that the upper frame can be pulled up and removed from the lower frame.

[0017]

FIG. 1 is a front view showing the embodiment of the present invention, FIG. 2 is a rear view, and FIG. 3 is a side sectional view.
The description will be made based on FIG. 4, which is a side cross-sectional view when the lock portion of FIG. 3 is pulled out, FIG. 5 which is an XX cross-sectional view, and FIG. 6 which is a Y arrow view showing fitting of the lock portion and the guide body.

The framework scaffold joint 1 comprises a cylindrical body 2 and a lock portion 3.

The cylindrical body 2 is provided with a belt-shaped body 4 at an intermediate portion in the longitudinal direction, and the belt-shaped body 4 and support holes 5a and 5b are provided on both front and back sides of the circumferential surface of the cylindrical body 2 at the location of the belt-shaped body 4. The support holes 5a on the front side are formed as circular support holes, and the support holes 5b on the back side are formed as square support holes.

The thickness of the strip 4 may be approximately the same as the wall thickness of the tubular body of the building frame.

The cylindrical body 2 is further provided with an engaging hole 6 and a fixing hole 7.
To provide. The engagement hole 6 is provided above the strip-shaped body 4 on the front side at the same distance as the engagement end 9 of the lock portion 3.

The fixing hole 7 is provided below the strip 4.
The cylindrical body 2 is previously fixed to one of the building frames, that is, the upper part A of the lower building frame in this embodiment, with pins, bolts and the like (not shown) through the fixing holes 7.

The lock portion 3 is formed by bending the round bar 8 into a V-shape, and forms an inclined surface with the shorter end as the engaging end 9. The angle of the slope is about 40 degrees with respect to the vertical surface of the cylindrical body 2 in this embodiment.

The longer end side of the lock portion 3 is at the support portion 1
It is 0 and is formed in a straight line portion slightly longer than the diameter of the cylindrical body 2. The guide body 12 is provided and fixed on the outer side of the end portion of the support portion 10. In this embodiment, the support portion 10 and the fixing portion 13 of the guide body 12 are fixed by stamping.

The guide body 12 is a hollow cylindrical body, and the outer shape is divided into two in the middle. The outer shape of the portion of the guide body 12 on the outer side of the cylindrical body is a cylindrical portion 12a having a cylindrical shape,
The outer shape of the portion closer to the inner side of the cylindrical body is a prismatic prismatic portion 12
b. In this embodiment, the prismatic portion 12b of the guide body 12 is a quadrangular prismatic body having a tapered corner portion.
It has such a shape that it is slidably fitted into the rectangular support hole 5b. The length of the guide body 12 is about half the diameter of the cylindrical body 2.

A spring 15 is provided on the support portion 10 of the lock portion 3. The spring 15 is provided between the prismatic portion 12b of the guide body 12 and the inner surface of the cylindrical body.

The position of the bent portion 11 of the lock portion 3 is bent at a position related to the inclined surface of the engaging end portion 9 with the spring provided in the lock portion 3, and the bent portion 11 moves from the bent portion 11 to the engaging end portion 9. The portion up to the inclined surface is projected from the cylindrical body 2 as the protruding portion 14. In this state, the inclined surface of the engaging end portion 9 is such that the front end engages with the engaging hole 6 of the cylindrical body 2 and the rear end protrudes outside the cylindrical body 2.

Next, the operation of the present invention will be described.

In the upper part A of the lower building frame, the cylindrical body 2 is inserted from the fixing hole 7 side to the band-shaped body 4, and the fixing hole and the fixing hole 7 of the lower building frame A are inserted.
And fix them with pins, bolts, etc.

At this time, the tip end of the inclined surface of the engaging end portion 9 of the lock portion 3 is engaged with the engaging hole 6 of the cylindrical body 2, and the inclined surface other than the tip portion is projected outward, and is fitted at least. It is sufficient that the thickness exceeds the thickness of the lower part B of the upper building frame.

The upper building frame B is inserted at the lower opening thereof from above the joint 1 for framework scaffolding and from the engaging hole 6 side. As it is, the lower end of the upper building frame B abuts the inclined surface of the engaging end portion 9 and presses the engaging end portion 9 to push the entire lock portion 3 outwards against the spring 15.

The engaging end portion 9 compresses the spring 15 while resisting the urging force of the spring 15 and slides on the surface of the upper building frame B at its tip. As it is, the lower end of the upper building frame B is striped 4
When pushed all the way, the engagement end 9 comes into contact with the engagement hole C of the upper building frame B and the engagement hole 6 of the cylindrical body 2, and due to the urging force of the spring 15 extending, the engagement end portion 9 comes into contact with the two engagement holes C and 6. Engage. As a result, the upper building frame B becomes the joint 1 for the frame scaffolding.
, And the upper building frame B is engaged with the lower building frame A.

At this time, in the lock portion 3, since the prismatic portion 12b of the guide body 12 is fitted into the square support hole 5b and cannot be removed, the engaging end portion 9 is in the left-right direction with respect to the longitudinal direction of the cylindrical body. It returns to the same position without turning.

When disassembling the framework scaffold, the projecting portion 14 of the lock portion 3 of the framework scaffold joint 1 is pulled against the spring 15 so that the engaging end 9 is engaged with the engaging hole C,
Remove from the engaging hole 6 and pull out further. Then the guide body 12
Is, the prismatic portion 12b is disengaged from the prismatic support hole 5b, and the prismatic portion 12a of the guide body 12 is fitted into the prismatic support hole 5b.
It can freely rotate left and right with respect to the longitudinal direction of the cylinder.

Therefore, the lock portion 3 can be rotated, the engaging end portion 9 is dislocated from the position of the engaging hole 6 to the left and right, and when the operator releases his / her hand, the engaging end portion 9 is cylindrical. Rest on the surface of body 2.

In this state, the operator can dismantle by removing the hand from the joint and pulling the upper building frame B upward.

[0037]

According to the present invention, therefore, the work of assembling the building frame of the frame scaffolding can be safely and reliably carried out by a small number of people, and the dismantling work of the frame scaffolding is much easier and shorter than the conventional one. You can do it in time.

Further, as compared with the conventional joint, there is an effect that manufacturing and assembling can be performed very easily.

Further, there is an effect that there is no fear that parts will be lost during disassembly and transportation.

[Brief description of drawings]

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

[FIG. 2] Similarly, a rear view,

FIG. 3 is a side sectional view,

FIG. 4 is a side sectional view,

FIG. 5 is a sectional view taken along line XX.

6 is a view on arrow Y of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame joint for scaffolding 2 Cylindrical body 3 Lock part 5a Circular support hole 5b Square support hole 6 Engagement hole 7 Fixing hole 8 Round bar body 9 Engaging end part 10 Support part 11 Bending part 12 Guide body 12a Cylindrical part 12b Square column Shaped part 13 Fixed part 14 Projection part 15 Spring

Claims (2)

[Claims] 1. A joint for frame scaffolding comprising a cylindrical body provided with a lock part, wherein the cylindrical body is provided with an engagement hole and a support hole on a peripheral surface thereof, and the lock part is formed by bending a round bar-shaped body. The frame insertion side has one end as an engaging end and the end face is formed as an inclined surface so that it can be engaged with the engaging hole of the cylindrical body, and the other end can be slidable with a circular supporting hole of the cylindrical body as a supporting portion. Inserted, the support part has a spring inside the cylinder and the guide body at the end side, the guide body is a hollow cylinder, the outer shape of the cylinder is cylindrical and the outer shape of the cylinder is prismatic. age,
A framework scaffold joint characterized by being slidable with a rectangular support hole of a cylindrical body. 2. A frame scaffolding joint comprising a lock member provided on a cylindrical body, wherein the cylinder body is provided with an engagement hole, a support hole and a belt-shaped body, and the lock portion is formed by bending a round bar-shaped body. The building frame insertion side has one end as a locking end and the end face is formed as an inclined surface so that it can be engaged with the engagement hole of the cylindrical body, and the other end side is provided as a supporting portion on the cylindrical body of the cylindrical body. It is slidably inserted into the circular support hole, the support part is provided with a spring inside the cylinder, and the guide body is provided at the end side.The guide body is a hollow cylinder, and the outside of the cylinder is cylindrical. A frame scaffold joint characterized in that the inside of the cylinder has a prismatic shape and is slidable with the rectangular support hole of the cylinder.