JPH0218186Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field of the invention] This invention relates to connecting fittings for assembly scaffolding, and is mainly used for interior work in stairwells, various atriums, etc. during the construction of ordinary houses. This invention relates to a connecting fitting for assembled scaffolds that interconnects assembled scaffolds to provide a wide work surface.

[Technical background of the invention and its problems] Conventionally, for example, when constructing a general house,
Interior work for stairwells and various types of atriums is carried out by temporarily erecting appropriate scaffolding because the work support surfaces are stepped or low. In particular, installation in these locations is troublesome due to the narrow space, such as installing scaffolding boards on stepladders, or installing scaffolding boards on stair handrail walls and window frames. Even if installed, the work surface was extremely narrow, and in such a narrow work area, workability was poor and the danger was great. Furthermore, when a large work surface is required in a staircase, atrium, etc., it is extremely dangerous to simply place assembled scaffolds adjacent to each other unless they are securely connected.

[Purpose of the invention] Therefore, this invention was devised in view of the existing drawbacks as described above and to eliminate them. The object of the present invention is to provide a connecting fitting for assembled scaffolds that can reliably connect and fix assembled scaffolds to each other and improve the efficiency and safety of various interior work.

[Summary of the invention] Therefore, in this invention, a straddling piece with a generally groove-shaped cross section is formed to straddle the struts of the assembled scaffolding when they are placed adjacent to each other, and A pair of left and right rotation holes are drilled in the upper wall of the straddling piece at positions corresponding to the engagement recesses having the mating edges as openings, each of which is provided with a handle that can be rotated from the outside. At the tip of the handle shaft, there is an engagement protrusion that is not larger than the internal width of the engagement recess, has a width greater than the gap between the engagement edges, and has a vertical width smaller than the gap between the engagement edges. This consists in that a pull-restricting protrusion is attached to the rear surface of the upper wall of the straddle piece, with which the handle gripping operation part comes into close contact when the engaging protrusion is engaged with the engaging recess. .

[Embodiments of the invention] Hereinafter, embodiments of the invention will be described with reference to the drawings.

Reference numeral 10 shown in the figure is a jack base, and 40 is a standard frame, which is designed to be stacked and connected in an appropriate number of stages on the jack base, and is set at a predetermined length to ensure the height to the work surface. A hollow cross member 42 is installed horizontally between two support members 41.

Therefore, the support material 41 in the standard frame 40 is
It is formed from a molded material, such as an extruded aluminum product. That is, as shown in FIGS. 1 and 2, the four corners of the hollow body, which has a substantially square cross section, are chamfered and concave to form an octagonal cylinder shape, and a shallow bottom is formed on each of the outer surfaces of the opposing left and right side walls. A shaped engaging surface 1 is recessed therein, and a deep-bottomed engaging recess 2 with an engaging edge 3 along the opening edge is recessed in one of the opposing front and rear side walls. be.

When the jack base 10 and the standard frame 40 are assembled and arranged, the horizontal beams 42 are placed horizontally between the engagement surfaces 1 so that the left and right side walls match in the left-right direction, and the engagement recesses are The front and rear side walls with recesses 2 face forward or rearward.

Therefore, each standard frame 40 has a joint tube 48.
Scaffolding boards 50 having openable and closable door portions 55 and serving as a work surface and handrail frames 60 for ensuring safety are installed between the standard frames 40 stacked up and arranged in the front and back direction. Ru.

When the assembled scaffolds assembled in this manner are connected to each other, the connecting fitting 90 according to this invention is used.

That is, the structure is such that the support members 41 of the standard frames 40 adjacent to each other in the left and right direction are arranged adjacently, and a spanning piece 91 having a substantially groove-shaped cross section is formed to straddle each other, and the support members 41 A handle 93, which can be rotated from the outside, is inserted into a pair of left and right rotation holes 92 drilled in the upper wall of the straddling piece 91 at positions corresponding to the engagement recesses 2 in the figure. death,
At the tip of the shaft portion of the handle 93, an engagement member is provided which has a width not larger than the internal width of the engagement recess 2, a width greater than the gap between the engagement edges 3, and a vertical width smaller than the gap between the engagement edges 3. A mating protrusion 94 is provided in a protruding manner, and the upper wall of the covering piece 91 straddles the pull regulating protrusion 95 with which the grip operation portion of the handle 93 comes into close contact when the engaging protrusion 94 is engaged into the engaging recess 2. It is attached to the back.

The engaging protrusion 94 is cut into an arc shape so that the corner in the rotation direction smoothly slides into contact with the inner surface of the side part of the engaging recess 2, and also prevents engagement from the outside of the connecting fitting 90. In order to visually confirm the presence or absence of the engaged state and to ensure safety, these are arranged orthogonally to each other so that the engagement protrusion 94 engages with the engagement recess 2 when the grip operation section of the handle 93 is positioned in the vertical direction. It is located. Furthermore, the end of the pull regulating protrusion 95 resists the pull resistance when the gripping operation portion of the handle 93 itself is placed on the pull regulating protrusion 95 and the engagement protrusion 94 engages with the engagement recess 2. It is formed into a sloping surface that gradually becomes higher from the end toward the center so that it can be climbed on.

When this is used, the adjacent struts 41 are mutually connected.
With the handle 93 facing sideways, straddle it with the straddle piece 91 to insert the engagement protrusion 94 into the engagement recess 2, and then rotate the handle 93 90 degrees downward. What is necessary is to engage the engagement protrusion 94 with the inner edge of the engagement edge 3 within the engagement surface 1.

Further, reference numeral 80 denotes an anti-sway fitting that prevents the entire scaffold from shaking or falling by coming into contact with the wall surface of the standard frame 40 assembled on the jack base 10 in the stairwell or the atrium.

[Effects of the invention] Therefore, as described above, this invention forms a straddling piece 91 having a generally groove-shaped cross section that straddles the struts 41 of the assembled scaffold when they are arranged adjacent to each other. A pair of left and right rotation holes 92 are drilled in the upper wall of the straddling piece 91 at positions corresponding to the engagement recesses 2 having the engagement edges 3 in the openings of the support members 41.
A handle 93 that can be rotated from the outside is inserted into each of the handles, and a handle 93 that is not larger than the inner width of the engagement recess 2 and has a gap between the engagement edges 3 is inserted at the tip of the shaft portion of the handle 93. An engaging protrusion 9 having a larger width and a vertical width smaller than the gap between the engaging edges 3
4 protrudes, so the struts 41 of the assembled scaffolds are straddled by the straddling pieces 91 when they are placed adjacent to each other, and the engaging protrusions 94 inserted into the engaging recesses 2 are rotated by the handle 93. By engaging with the engaging edge 3 through a dynamic operation, the strut members 41 are placed adjacent to each other.
They can be reliably connected to each other.

At this time, a pull regulating protrusion 95 with which the gripping operation part of the handle 93 comes into close contact when the engaging protrusion 94 is engaged into the engaging recess 2 is attached to the back surface of the upper wall of the straddling piece 91. Coupled with the fact that the mating protrusion 94 engages with the mating edge 3, the strut material, 4 can be removed simply by operating the handle 93.
1 to the side of the straddling piece 91, it is securely fixed and will not be separated by external force or other forces.

As explained above, according to this invention, it is possible to reliably connect and fix assembled scaffolds assembled as work scaffolds in, for example, stairwells and atriums, improving the efficiency and safety of various interior work. It has excellent practical effects.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention; Fig. 1 is a partially cutaway perspective view, Fig. 2 is a sectional view of the connected state,
FIG. 3 is a partially omitted perspective view of an example of the assembled scaffold. 1... Engagement surface, 2... Engagement recess, 3... Engagement edge, 10... Jacket base, 40... Standard frame,
41... Support material, 42... Side beam material, 48... Joint pipe, 50... Scaffolding board, 55... Door part, 60...
... Handrail frame, 80 ... Steady rest fitting, 90 ... Connection fitting, 91 ... Straddling piece, 92 ... Rotation hole, 93 ...
...handle, 94...engaging protrusion, 95...pull regulating protrusion.

Claims (1)

[Scope of utility model registration request] When the struts in the assembled scaffolding are arranged adjacent to each other, a spanning piece having a substantially groove-shaped cross section is formed to straddle each other, and the engaging edges of the struts are aligned with the engaging recesses having openings. At this position, a handle that can be rotated from the outside is inserted into a pair of left and right rotation holes drilled in the upper wall of the straddling piece, and an engagement recess is inserted at the tip of the handle shaft. An engaging protrusion that is not larger than the internal width, has a width greater than the gap between the engaging edges, and a longitudinal width smaller than the gap between the engaging edges, and an engaging recess of the engaging protrusion. A connecting fitting for an assembly scaffold, characterized in that a pull-restricting protrusion is attached to the back surface of an upper wall of a straddling piece, with which a handle gripping operation part comes into close contact when engaged in a building.