JPH0635497U - Leg adjustment mechanism for scaffolding for plasterers - Google Patents

Abstract

(57) [Summary] (Corrected) [Purpose] To make it possible to adjust the height of the legs of the scaffold used for plastering work very easily and almost steplessly. [Structure] Each leg F constituting a leg portion is formed by a telescopic double tube, and a long through hole that is long in the axial direction of the tube 2 is formed in the outer tube 2 in the overlapping portion of these tubes. 4 are formed, through holes 5 are formed in the inner tube 3 at appropriate positions corresponding to the long through holes 4, and clamping screws 6 and 8 are interposed from both sides of these double tubes, respectively. Is inserted into the long through-hole 4 and the through-hole 5 and tightened so that the friction resistance increasing means 11 between the outer tube 2 and the clamping plates 7 and 8 prevents slippage and secures fixation. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a leg adjustment mechanism for a plastering scaffold for plastering, which adjusts the height of the leg portion of the scaffolding used for plastering work extremely easily and accurately.

[0002]

[Prior art]

 As a mechanism for adjusting the height of the legs of a scaffold used in plastering work, conventionally, each leg is formed by a slidable double pipe, and each of these pipes is appropriately Small holes are opened at intervals and the pin height is set appropriately by penetrating a set pin between these small holes, or a slidable double pipe is used. There is also a lock nut type that sets the height appropriately by screwing the inner tube to the outer tube with bolts.

[0003]

[Problems to be solved by the device]

 However, of these methods, the pin method has a problem that it can only be adjusted in units of the pitch at which the small hole is opened, and if the small hole is deformed, the pin cannot be inserted. There was a problem that caused it.

In addition, the lock nut type requires a tool for tightening the bolt or the nut, and there is also a risk that the tightening causes loosening, the legs are contracted, and the scaffold is tilted.

In view of the above-mentioned problems and the like, the present invention provides a plastering scaffolding leg that can adjust the height of the scaffolding leg used in plastering work very easily and substantially steplessly. It was devised as a subject to provide a section adjusting mechanism.

[0006]

[Means for Solving the Problems]

 This invention is a foot adjustment mechanism for a plastering scaffold for adjusting the height of the foot of a scaffold used in plastering work.The legs have the same cross-sectional shape and It is formed by two telescoping tubes that are fitted into the other, and a long through hole that is long in the axial direction of the tube is opened at the appropriate position of the outer tube in the overlapping part of these tubes. , A through hole should be opened in the inner tube at an appropriate position corresponding to the long through hole, and a fixing screw should be inserted through the two tubes, and should be placed on the screw head side of the outer tube through which the fixing screw penetrates. A pressure plate is arranged on each side of the screw tip side, and the pressure plate on the screw tip side is screwed with the fixing screw to tighten it to secure the outer tube with the screw head and the pressure plate on the screw head side. It is designed so that it can be clamped, and either one or both of this outer tube and each clamping plate has friction. By disposing the resistance increasing means, the above-mentioned problems are solved.

Further, the fixing screw solves the above-mentioned problems by providing a tightening operation body at the screw head portion thereof.

Further, the frictional resistance increasing means is formed so that the surface on the outer pipe side and the surface of the pressing plate are respectively formed into fine rack-shaped surfaces so as to increase the frictional resistance to such an extent that they are hardly displaced by their meshing. This solves the above-mentioned problems.

[0009]

[Action]

 The leg adjusting mechanism of the plastering scaffold according to the present invention appropriately expands and contracts the two pipes of the leg and tightens the fixing screw. At that time, a long through hole that is long in the axial direction of the pipe is opened at a proper position of the outer pipe in the overlapping portion of these pipes, and an inner pipe is penetrated at a proper position corresponding to the long through hole. Since the holes are opened and the fixing screws are arranged so as to extend through the two pipes, even if the fixing screws are made to penetrate through the two pipes, the length of the long-penetration hole is limited to two. It is possible to expand and contract the pipe.

Then, since the two pipes have substantially the same cross-sectional shape and one is fitted into the other, the two pipes expand and contract with little backlash, and the two pipes are fixed so that they cannot expand and contract. To be done.

In the fixing, pressure plates are arranged on both sides of the screw head side and the screw tip side of the outer tube through which the fixing screw penetrates, and the pressure plate on the screw tip side is screwed with the fixing screw. The outer pipe can be pinched by the screw head and the pinching plate on the screw head side by tightening with the screw head, and friction is applied to either or both of the outer pipe and each pinching plate. Since the resistance increasing means is arranged, the pinching plate is prevented from slipping by the friction resistance increasing means and secures the fixing.

Further, since the fixing screw is provided with the tightening operation body at the screw head portion, fixing and releasing the fixing with the fixing screw can be easily performed without using a tool.

Further, as the frictional resistance increasing means, the surface on the outer pipe side and the surface of the pressing plate are formed as fine rack-shaped surfaces so as to increase the frictional resistance so that they are hardly displaced by their meshing. It can be securely fixed by simple tightening of the fixing screw, enabling almost stepless adjustment.

[0014]

【Example】

 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

That is, the symbol S shown in the drawing is a scaffold used in plastering work, and is formed, for example, so that the scaffold plate S1 is supported by four legs F constituting leg parts.

An adjusting mechanism 1 for adjusting the height of each leg F is formed on each of these legs F.

The adjusting mechanism 1 includes an outer tube 2 and an inner tube 3, each of which has a leg F having a cross-sectional shape that is substantially the same, and in the case of the figure, is rectangular and one of which is fitted into the other to allow expansion and contraction. It is formed by two pipes, and a long through hole 4 which is long in the axial direction of the pipe 2 is opened at an appropriate position of the outer pipe 2 in the overlapping portion of these pipes 2, 3 and the inner pipe 3 On this side, a through hole 5 is opened at an appropriate position corresponding to the long through hole 4.

Then, a fixing screw 6 is arranged so as to penetrate through the two pipes 2 and 3, and both sides of the outer pipe 2 through which the fixing screw 6 penetrates, the screw head 6b side and the screw tip 6a side, respectively. The pressure plates 7 and 8 are arranged, and the pressure plate 7 on the screw tip 6a side is screwed with the fixing screw 6 and tightened to be screwed by the screw head 6b and the pressure plate 8 on the screw head 6a side. 2 is formed so as to be able to be clamped, and frictional resistance increasing means 11 is disposed on either or both of the outer tube 2 and each of the clamping plates 7 and 8, or both in the illustrated case. .

Here, the fixing screw 6 and the pressing plate 7 are screwed together by fixing the nut 9 to the outer surface of the pressing plate 7 at the position of the through hole 7 a and fixing the nut 6 and the nut that penetrate the through hole 7 a. By screwing 9 together, the pinching plate 7 and the fixing screw 6 are substantially screwed together.

Further, the fixing screw 6 is provided with a horizontal bar 10 as a tightening operation body at a screw head 6a portion thereof so that the fixing screw 6 can be easily tightened only by an operation of an operator.

The frictional resistance increasing means 11 uses the surfaces of the outer tube 2 and the pressing plates 7 and 8 including the surfaces in contact with the pressing plates 7 and 8 as fine rack-shaped surfaces to mesh with each other. It is formed so as to increase the frictional resistance to the extent that it is hardly displaced.

The concrete structure is as follows. First, racks 12 are formed on both side edges of the long through hole 4 of the outer tube 2 in the longitudinal direction of the long through hole 4, respectively. On the other hand, racks 13 that mesh with the racks 12 are formed on the surfaces that come into contact with the outer tube 2. Each of the racks 12 and 13 is a rack with a fine mesh.

Then, as described above, the fixing screw 6 is passed through the outer tube 2 and the inner tube 3, and the screw is penetrated by the fixing screw 6 to both sides of the screw head 6b side and the screw tip 6a side of the outer tube 2. The pressing plates 7 and 8 are arranged so that the hooks 12 and 13 are engaged with each other, the fixing screw 6 is penetrated through the pressing plate 8 and the pressing plate 7 and the fixing screw 6 on the screw tip 6a side are screwed together. By tightening, the outer tube 2 is pinched by the screw head 6b and the pinching plate 8 on the screw head 6a side.

Then, the racks 12 and 13 are pinched in a meshed state, so that even if a force is applied in the direction in which the outer tube 2 and the inner tube 3 are displaced, that is, in the direction of expansion and contraction, the inner tube 3 Since the fixing screw 6 penetrates the through hole 5 and is fixed by engaging the racks 12 and 13 with each other, the fixing screw 6 is simply tightened so that the outer pipe 2 and the inner pipe 3 are not displaced from each other. It is fixed.

Needless to say, the leg adjusting mechanism for a plastering scaffold according to the present invention is not limited to the above-mentioned embodiment, and in particular, the frictional resistance increasing means 11 is the rack 12, 13 Any other means may be used as long as it increases frictional resistance, and by fixing the fixing screw 6, it will not slip and can be easily fixed after adjusting the length of the leg portion. It may be on the body or of the type like a super screw.

[0026]

[Effect of device]

 The present invention thus formed is a leg adjustment mechanism for a plastering scaffolding for adjusting the height of the leg portion of the scaffolding used for plastering work. It is formed by two tubes that have almost the same shape and one of which is fitted into the other of which is expandable and contractible. At the appropriate position of the outer tube in the overlapping part of these tubes, it is long in the axial direction of the tube. The long through hole is opened, the through hole is opened in the inner tube at an appropriate position corresponding to the long through hole, and the fixing screw is arranged so as to extend through the two tubes. A pressure plate is arranged on each of the screw head side and the screw tip side of the outer tube, and the pressure plate on the screw tip side is screwed into the fixing screw to tighten the screw head and this screw head side. The outer tube is formed so as to be able to be pinched by the pressure plate, and either one of the outer tube and each pressure plate, Alternatively, by arranging frictional resistance increasing means on both sides, if the two tubes of the leg part are appropriately expanded and contracted and the fixing screws are tightened, even if the fixing screws are penetrated across the two tubes, Two pipes can be expanded and contracted within the length of the through hole, and the two pipes have almost the same cross-sectional shape and one is fitted into the other, so there is little backlash. It can be expanded and contracted as it is, and the two pipes can be fixed there without being expanded or contracted.

In the fixing, pressure plates are arranged on both sides of the screw head side and the screw tip side of the outer tube through which the fixing screw penetrates, and the pressure plate on the screw tip side is screwed with the fixing screw. By tightening together, the outer pipe can be pinched by the screw head and the pinching plate on the screw head side, and at least one or both of the outer pipe and each pinching plate is rubbed. Since the resistance increasing means is provided, the pressing plate is prevented from slipping by the friction resistance increasing means, and the fixing can be reliably performed by simply tightening the fixing screw.

Further, since the fixing screw is provided with the tightening operation body at its screw head portion, the fixing and the fixing release by the fixing screw can be easily performed without using a tool.

Further, as the frictional resistance increasing means, the surface on the outer tube side and the surface of the pressing plate are formed into fine rack-like surfaces so as to increase the frictional resistance to the extent that they are hardly displaced by their meshing. It can be securely fixed by simple tightening of the fixing screw, which enables almost stepless adjustment.

As described above, according to the present invention, the height of the legs of the scaffold used for plastering work can be adjusted very easily and almost steplessly, and the structure is simple. It has a practically useful effect such as being provided at a low cost.

[Brief description of drawings]

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

FIG. 2 is an exploded perspective view of essential parts of an embodiment of the present invention.

FIG. 3 is a cross-sectional view of an essential part of an embodiment of the present invention.

[Explanation of symbols]

S Scaffold S1 Scaffolding plate F Leg 1 Adjustment mechanism 2 Outer pipe 3 Inner pipe 4 Long through hole 5 Through hole 6 Fixing screw 6a Screw tip 6b Screw head 7 Clamping plate 7a Through hole 8 Clamping plate 9 Nut 10 Horizontal bar 11 Friction resistance increase Means 12 racks 13 racks

Claims (3)

[Scope of utility model registration request] 1. A foot adjusting mechanism for a plastering scaffold for plastering, which adjusts the height of a footing of a scaffolding used for plastering work, wherein the legs have substantially the same cross-sectional shape and one of It is formed by two telescopic tubes that are fitted into the other and expandable, and a long through hole that is long in the axial direction of the tube is opened at the appropriate position of the outer tube in the overlapping part of these tubes. , A through hole is opened in the inner tube at an appropriate position corresponding to the long through hole, and a fixing screw is arranged so as to extend through the two tubes, and the screw head side of the outer tube through which the fixing screw penetrates is arranged. A pressure plate is arranged on each side of the screw tip side, and the pressure plate on the screw tip side clamps the outer pipe by the screw head and the pressure plate on the screw head side by screwing and tightening with the fixing screw. It is made to be pressurizable, and friction resistance is applied to either or both of this outer tube and each clamping plate. Leg adjustment mechanism plastering scaffolding, characterized in that arranged pressurized means. 2. The leg adjusting mechanism for a plastering scaffold according to claim 1, wherein the fixing screw is provided with a tightening operation body at a screw head portion thereof. 3. The frictional resistance increasing means is formed to increase the frictional resistance to such an extent that the outer pipe side surface and the pressing plate surface are respectively formed into fine rack-shaped surfaces so that they are hardly displaced by their meshing. Alternatively, the leg adjustment mechanism for the plastering scaffold described in 2.