JPH0529297Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a pipe fitting for a scaffolding frame used for construction or construction.

(Prior Art) As a conventional scaffolding frame pipe joint fitting, for example, two scaffolding frame pipes to be connected are connected via a connecting pipe whose outer diameter is the same as the inner diameter of the two scaffolding frame pipes.
These connections are made by inserting pins into respective holes. or connect 2
There was one in which a pin was attached to the end of the scaffolding frame pipe, and the pin was inserted into a connecting straight joint that had a notch for insertion.

(Problems that the invention aims to solve) With conventional scaffolding frame pipe fittings, it is necessary to attach pins one by one when connecting scaffolding frame pipes, resulting in poor work efficiency and pins coming off after the scaffolding frame pipes are assembled. It contained danger. Furthermore, in the case where a pin is provided at the end of the scaffolding frame pipe, handling is inconvenient because it is necessary to twist the scaffolding frame pipe when inserting the pin. Since this structure is simply inserted, there is a possibility that the scaffolding frame pipe may come off.

The present invention aims to eliminate such inconveniences and provides a scaffolding frame pipe fitting that allows easy installation of scaffolding frame pipes and scaffolding frame pipe fittings, and provides a complete connection. When connecting scaffolding frame pipes with pipe fittings, a scaffold is created in which the scaffolding frame pipe fittings and the scaffolding frame pipe are reliably connected, which can prevent accidents.

(Means for Solving the Problems) In the present invention, the outer surfaces of the opposing arcuate plate-shaped supports 3 and 4 are formed in a shape that overlaps with the inner surfaces of the scaffold frame pipes 1 and 2, and each support member 3 , 4 is supported by a support ring 5
the holes 6, at opposing positions of the support ring 5.
7, and bolts 8 and 9 screwed into each hole 6 and 7 so that they can move forward and backward are inserted into the threaded part 1 in the center of the supports 3 and 4.
0 and 11, and the locking protrusions 16, 17, 18, 19 provided on the outer surface of the supports 3, 4 correspond to the locking holes 12, 13, 14, 15 of the scaffold frame pipes 1, 2. The locking protrusions 16, 17,
18 and 19 are provided in the locking holes 12, 13, 14, and 15 so that they can be freely engaged and detached, so that when the opposing supports 3 and 4 are brought close to each other, the end of one of the supports 4 is connected to the inner surface of the other support 3. The end portion of one of the supporting members 4 is bent inward so as to abut inwardly.

(Function) In the present invention, the bolts 8 and 9 screwed into the support ring 5 so as to be able to move forward and backward are inserted into the support members 3 and 4 inserted into the support ring 5.
When the bolts 8 and 9 are rotated to move the support members 3 and 4 closer together or apart, the outer surfaces of the support members 3 and 4 are connected to the scaffold frame pipes 1 and 2.
can be easily connected or separated by simply rotating the bolts 8 and 9.Furthermore, since the bolts 8 and 9 are provided on each of the supports 3 and 4, the supports 3 and 4 are pressed against the inner surfaces of the scaffolding frame pipes 1 and 2, respectively, to ensure a secure connection.
Since the locking protrusions 16, 17, 18, 19 are protrudingly provided at positions corresponding to the locking holes 12, 13, 14, 15 drilled in the locking holes 12, 13, 14, 15 and are removably provided, the locking protrusions 16,
17, 18, 19 are locking holes 12, 13, 14, 1
5, the supporting members 3, 4 and the scaffolding frame pipe 1,
2 can be reliably connected to the connecting pipes 1, 2, and the locking protrusions 16, 17, 18, 19 can be connected to the locking holes 12, 13, 1 with the support members 3, 4 joined to the connection pipes 1, 2.
4 and 15, it is securely engaged and does not come off inadvertently, making it possible to connect extremely reliably.
Moreover, since the end of one support member 4 is bent so that when the support members 3 and 4 are brought close to each other, it abuts on the inner surface of the other support member 3, so that the support members 3 and 4 are brought closer to each other. Since the supporting members 3 and 4 can be brought into contact and fixed so that they do not shift, the supporting members 3 and 4 do not come apart and are convenient to handle.

In addition, in the present invention, when connecting the scaffolding frame pipes 1 and 2 with a scaffolding frame pipe fitting, the bolts 8 and 9 penetrating through the holes 6 and 7 of the support ring 5 are rotated to connect the supporting members 3 and 2. The locking protrusion 16,1 provided in
7, 18, 19 move the supporting members 3, 4 inward to positions where they do not interfere with the insertion of the scaffolding frame pipes 1, 2. After this, the scaffolding frame pipes 1 and 2 are inserted into the supporting members 3 and 4 from above and below.

After that, when the bolts 8 and 9 are tightened, the support member 3,
4 are screwed into the bolts 8, 9 and threaded parts 10, 11, so the supports 3, 4 are in contact with the inner surfaces of the scaffolding frame pipes 1, 2, and the engagement provided on the supports 3, 4 is The locking protrusions 16, 17, 18, 19 are provided in the locking holes 12, 13, 14, 15 of the scaffolding frame pipes 1, 2 (the locking holes 13, 15 are drilled at symmetrical positions with 12, 14 in FIG. 5). ) and a complete connection is made. At this time, since the supporting members 3 and 4 have a shape that contacts the inner peripheral surface, they reliably contact the scaffolding frame pipes 1 and 2, and the locking protrusions engage with the locking holes, and the scaffolding frame pipes 1 and 2 can be firmly connected.

(Example) The present invention will be explained using an example based on the drawings.

The supporting members 3 and 4 are formed in a curved shape so as to have surfaces of the same shape as the inner circumferential surfaces of the scaffold frame pipes 1 and 2 to be connected, and the central axis of the curved shape side is formed near both ends of the supporting members 3 and 4. Locking protrusions 16, 17, 18, 1 on top
9 is fixed by welding or other methods and erected,
The screw portions 10, 11 are screwed into the middle points between the locking projections 16, 17, 18, 19 (a nut may be fixed). In addition, the outer surfaces of the arc-shaped plate-shaped supports 3 and 4 are formed in a shape that overlaps with the inner surfaces of the scaffold frame pipes 1 and 2, so that they are opposed to each other so as to match the shapes of the scaffold frame pipes 1 and 2. It is inserted into the support ring 5. The threaded portions 10 and 11 formed in the support members 3 and 4 have the tips of bolts 8 and 9 inserted into holes 6 and 7 bored at positions facing each other in the circumferential direction of the support ring 5. They are screwed together. When the bolts 8 and 9 are rotated, the threaded portions 10 and 11 of the supports 3 and 4 are engaged in different positions, so that the supports 3 and 4 approach the inner surface of the support ring 5.

In the embodiment, one of the supporting members 3 and 4 is
As shown in FIG. 4, the bolt 8,
When the support member 4 is moved inward by rotating the support member 9, the end portion of one support member 4 brought close to the other support member 3 is prevented from coming into contact with the inner surface of the other support member 3 and falling apart. This prevents the other supporting members 3 and 4 from becoming a hindrance and making inward movement difficult. In addition, the sizes of the locking protrusions 16, 17, 18, 19 are the same as those of the locking holes 12, 1 of the scaffold frame pipes 1, 2.
3, 14, 15, and is of a size that can be locked to the scaffolding frame pipes 1, 2 and does not get in the way when the supporting members 3, 4 are moved inward when inserting the scaffolding frame pipes 1, 2 into the scaffolding frame pipe fitting. It must be possible to insert the

Moreover, the support members 3 and 4 are curved because the scaffold frame pipes 1 and 2 used in the example are circular pipes, and when square pipes are used, the support members 3 and 4 are curved. Needless to say, a material whose outer surface is shaped so that it can overlap with the inner surface of the square pipe is used.

Next, the procedure for connecting the scaffolding frame pipe fittings and the scaffolding frame pipes 1 and 2 will be described.

By rotating the bolts 8 and 9, the supports 3 and 4 are moved inward to the state shown in FIG. In this state, insert the supports 3 and 4 into the scaffolding frame pipes 1 and 2, tighten the bolts 8 and 9, and move the supports 3 and 4 as shown in Fig. 5. The locking projections 16, 17, 18, 19 are locked in the locking holes 12, 13, 14, 15 of the scaffold frame pipes 1, 2 (see FIG. 6). At this time, the supports 3 and 4 are fixed to the support ring 5 with bolts 8 and 9, so the supports 3 and 4 are fixed to the support ring 5 with bolts 8 and 9.
Both ends of the scaffolding frame pipes 1 and 2 come into contact with the inner surfaces of the scaffolding frame pipes 1 and 2, and the scaffolding frame pipe fittings and the scaffolding frame pipes 1 and 2 are completely joined. The scaffolding frame pipe fittings and the scaffolding frame pipes 1 and 2 can be separated by performing the joining operation in the reverse order, resulting in the state shown in FIG. 4.

(Effect of the invention) The present invention enables the connection of the scaffolding frame pipe fitting and the scaffolding frame pipe to be performed by the support plate and the locking protrusion provided on the support plate and the locking hole in the scaffolding frame pipe. Since this is done by joining, the scaffolding frame pipe does not come off during joining, making work on the scaffolding frame safe. In addition, the structure is simple and can be produced in large quantities at low cost.If the positions of the locking holes and locking protrusions match, it can be used to connect conventional scaffolding frame pipes, etc.It has excellent effects. has.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and Fig. 1 is a front view of the invention, Fig. 2 is a left side view of the same, Fig. 3 is a partial sectional view of the same, and Fig. 4 is a support. FIG. 5 is a vertical cross-sectional view of the central part with the support plate moved outward, and FIG. 6 is a cross-sectional view showing the state in use. be. 1 and 2 are pipes for scaffolding frame, 3 and 4 are supporting materials, 5
is a support ring, 6 and 7 are holes, 8 and 9 are bolts, 1
0 and 11 are screw portions, 12, 13, 14, and 15 are locking holes, and 16, 17, 18, and 19 are locking projections.

Claims (1)

[Scope of utility model claims] The outer surfaces of the opposing arcuate plate-shaped supports are formed into a shape that overlaps the inner surface of the scaffolding frame pipe, and the center part of each support member is inserted into the support ring, and holes are formed at the opposing positions of the support ring. The bolts, which are drilled and inserted into each hole so that they can move forward and backward, are screwed into the threaded part of the center of the support material, and the locking protrusions provided on the outer surface of the support material correspond to the locking holes in the scaffolding frame pipe. A locking protrusion is provided in the locking hole so that it can be freely engaged and removed, so that when the opposing supports are brought close to each other, the end of one support comes into contact with the inner surface of the other support. A joint fitting for a pipe for a scaffolding frame, characterized in that the end of one support member is bent inward as shown in FIG.