JP3747187B2 - Scaffolding member and scaffolding device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a scaffold member and a scaffold device. The scaffold member of the present invention includes a scaffold member for building construction such as a bracket, a scaffold cloth board, a handrail, a root curl, and a long wall.
[0002]
[Prior art]
As a means for coupling the scaffold member to the scaffold pipe, there is known an assembly method in which a socket portion is provided on the scaffold pipe, a wedge-shaped latching portion is provided on the scaffold member, and the wedge-shaped latching portion is driven into the socket portion and coupled. .
[0003]
In the above assembling method, first, the tip of the wedge-shaped hooking portion is inserted into the socket portion. Next, the wedge-shaped hooking portion is driven into the socket portion by hitting the rear end portion of the wedge-shaped hooking portion with a hammer or the like. As a result, a frictional force is generated between the socket portion and the wedge-shaped latching portion, and the scaffold member is fixed to the receiving member by the frictional force.
[0004]
On the other hand, when the scaffold device is disassembled, the wedge-shaped latching is applied to the tip of the wedge-shaped latching portion driven into the socket by applying a hammer with a hammer or the like from the direction opposite to the insertion direction. Let the department leave.
[0005]
The assembling method for driving the wedge-shaped latching portion into the socket portion and combining it is relatively easy to assemble and dismantle, and has a strong coupling strength. Therefore, it is currently widely used in building construction scaffolding devices.
[0006]
However, in assembling and disassembling the scaffold device, it is necessary to hit the wedge-shaped hooking portion with a hammer or the like, which causes the following problems.
(A) First, in order to securely hang, when the wedge-shaped hook is strongly driven into the socket, the disassembly work becomes difficult.
(B) In order to avoid such a problem, when lightly driven, the wedge-shaped latching part is lifted from the socket part due to the strong wind or vibration or shaking caused by the movement of the worker, and the mechanical assembly strength is reduced. And the shaking becomes larger.
(C) At construction sites close to residential areas, hospitals, schools, etc., special consideration should be given to noise problems. Noise can be reduced to some extent by weakening hammering or using a rubber hammer. However, in this case, the coupling force of the wedge-shaped hooking portion with respect to the socket portion is insufficient, the mechanical assembly strength of the scaffold device is lowered, and the shaking is increased.
(D) Due to the impact applied by a hammer or the like, defects such as damage or deformation are generated in the wedge-shaped hooking portion or the socket portion.
(E) Since it is a repetitive striking work using a hammer or the like, a worker who has assembled or disassembled the scaffold device often causes tendonitis, which also causes problems in the health management of the worker.
[0007]
[Problems to be solved by the invention]
An object of the present invention is to provide a scaffold member that can be easily assembled and disassembled without using tools, and a scaffold device using the same.
[0008]
Another object of the present invention is to provide a scaffold member that can be reliably fixed and a scaffold device using the same.
[0009]
[Means for Solving the Problems]
In order to solve the above-described problem, a scaffold member according to the present invention includes a latching portion and a slider. The hook is wedge-shaped and includes a slider groove and a convex guide. The slider groove has two side walls and a bottom wall. The two side walls rise on both sides of the bottom wall and face each other. At least one of the convex guides is disposed in the vicinity of the tip of the slider groove. The slider is rod-shaped and has an inclined surface on one end side in the longitudinal direction. The said inclined surface inclines in the direction which reduces thickness toward the front-end | tip. The slider is movably disposed in the slider groove such that the inclined surface faces the bottom wall.
[0010]
As described above, the scaffold member according to the present invention includes a latching portion, and since the latching portion has a wedge shape, it can be inserted into a known socket portion or the like.
[0011]
The slider groove has two side walls and a bottom wall. The two side walls rise on both sides of the bottom wall and face each other. The slider is movably disposed inside the slider groove. Therefore, the slider disposed in the internal space of the slider groove can be guided by the two side walls and the bottom wall while preventing the slider from falling off.
[0012]
The latching portion includes a convex guide, and at least one of the convex guides is disposed in the vicinity of the tip of the slider groove. The slider is rod-shaped and has an inclined surface on one end side in the longitudinal direction. The inclined surface is inclined in the direction in which the thickness decreases toward the tip. Therefore, when the slider moves in accordance with the gravity inside the slider groove, the inclined surface provided on the slider contacts the convex guide and is pushed up in the direction away from the bottom wall of the slider groove according to the inclination angle of the inclined surface. .
[0013]
The above-described scaffold member is combined with the receiving member to constitute a scaffold device. The receiving member includes a socket portion. As for the said scaffold member, the said latching part is inserted in the said socket part of the said receiving member.
[0014]
In order to fix the scaffold member to a receiving member such as a scaffold pipe, for example, first, the latching portion of the scaffold member is inserted into the socket portion of the receiving member, and then the slider is operated. Since the slider is movably disposed inside the slider groove so that the inclined surface faces the bottom wall, the slider moves in accordance with the gravity inside the slider groove. At that time, the inclined surface provided on the slider comes into contact with the convex guide, and the slider is pushed up in the direction away from the bottom wall of the slider groove according to the inclination angle of the inclined surface.
[0015]
As a result, a first contact position is generated between the inclined surface of the slider and the convex guide, and a second contact position is generated between the inner wall surface of the socket portion of the receiving member and the upper surface of the slider. A third contact position occurs between the starting position of the inclined surface and the bottom wall of the slider groove. A frictional force is continuously generated at each of the first to third contact positions. For this reason, a scaffold member and a receiving member are fixed via a slider, and this fixed state is maintained.
[0016]
In this state, when vibration or shaking occurs due to strong winds or movement of workers, the slider further penetrates deeply into the slider groove due to its own weight or the like. Accordingly, the coupling strength due to the first to third contact positions is further improved. For this reason, regardless of vibration or shaking, the scaffold member and the receiving member continue to be fixed via the slider.
[0017]
Next, when the scaffold device is disassembled, in order to remove the scaffold member from the socket portion of the receiving member, an operator may perform an operation of pulling out the slider to release the contact state at the first to third contact positions. The slider is movably disposed inside the slider groove, and the inclined surface of the slider has an inclination direction that does not generate resistance with respect to the direction in which the slider is pulled out. Can be easily pulled out, and the contact state at the first to third contact positions can be easily released. For this reason, the scaffold device can be easily disassembled without using tools.
[0018]
As described above, according to the scaffold member according to the present invention, it is not necessary to hit the head portion or the like of the wedge-shaped latching portion with a hammer or the like, and it is only necessary to operate the slider inside the slider groove. Therefore, the wedge-shaped latching portion or the like is not damaged or deformed. In addition, noise considerations are almost unnecessary even at construction sites near residential areas, hospitals, schools, and the like. In addition, there is no health management problem for workers to cause tendonitis.
[0019]
Other objects, configurations and advantages of the present invention will be described in more detail with reference to the accompanying drawings. The accompanying drawings are merely examples.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a partially broken front view of a scaffold member according to the present invention. FIG. 1 illustrates a known bracket. However, the present invention can be applied to other scaffold members for construction work, such as scaffolding cloth boards, handrails, roots, lines, etc., in addition to the illustrated brackets.
[0021]
The scaffold member shown in FIG. 1 includes a main collar portion 10, a hook portion 2, and a slider 3. The main flange 10 includes an open end 101, an upper wall 11, and a lower wall 12. The main flange 10 is preferably a square pipe having a hollow section 102 and a square section, but does not exclude a round pipe having a circular section.
[0022]
Moreover, the main collar part 10 has the latching | locking part 2 at the both ends of a longitudinal direction. The latching portion 2 has a wedge shape and includes a slider groove 20 and a convex guide 25. The slider groove 20 has two side walls 21 and a bottom wall 22. The outer surface side of the bottom wall 22 preferably has a curved structure.
[0023]
The two side walls 21 rise on both sides of the bottom wall 22 and face each other. The slider groove 20 is a space surrounded by the two side walls 21 and the bottom wall 22, and the slider 3 is disposed in the space.
[0024]
The convex guide 25 has a cylindrical shape, and both ends are sandwiched between two side walls 21 inside the slider groove 20, and are fixedly disposed on the bottom wall 22 near the tip of the slider groove 20. The convex guide 25 may have another shape such as a trapezoidal cross section, or may be directly disposed only on the bottom wall 22. Further, the slider groove 20 may be arranged at an interval in the width direction.
[0025]
The illustrated slider 3 has a slider base 30 having a square cross section. The slider base 30 includes an inclined surface 31, an upper surface 32, a lower surface 33, and a tip portion 37. The inclined surface 31 is connected to the lower surface 33 at an angle, and is provided on one end side in the longitudinal direction of the slider base 30. The inclined surface 31 is inclined in the direction in which the wall thickness decreases toward the distal end portion 37. The slider 3 is movably disposed inside the slider groove 20 so that the inclined surface 31 faces the bottom wall 22.
[0026]
The illustrated slider 3 further includes a head portion 34, a first hook piece 35, and a second hook piece 36. The head portion 34 is provided on the other end side of the slider base 30 opposite to the tip portion 37. The head portion 34 is bent into a bowl shape in consideration of convenience when operating the slider 3. The first latching piece 35 and the second latching piece 36 are plate-like portions that rise from the upper surface 32 of the slider base 30.
[0027]
The first hooking piece 35 has a shorter rising distance than the second hooking piece 36 and is provided opposite to the second hooking piece 36 so as to be opposed to each other vertically. The first latching piece 35 is latched on the outer surface of the upper wall 11 of the main collar 10.
[0028]
The second hooking piece 36 contacts the inner surface of the lower wall 12 at the opening end 101 of the main flange 10 to prevent the slider 3 from dropping and to reduce the moving distance of the slider 3 in the internal space of the slider groove 20. Determine the lower limit. Moreover, since the 2nd latching piece 36 also contacts the inner surface of the upper wall 11, the detachment | leave of the slider 3 can be prevented.
[0029]
Further, the illustrated bracket includes a support portion 13, a reinforcement portion 14, and a support receiving portion 15. Since these are well-known components in the technical field, details are omitted.
[0030]
Further, unlike FIG. 1, the scaffold member according to the present invention may have a structure including both a wedge-shaped hooking portion 2 and a hooking portion of another shape or structure. Specific examples of the latching portion having other shapes and structures include a hook-shaped latching portion and a well-known clamp.
[0031]
The scaffold member according to the present invention is combined with a receiving member including a socket portion to constitute a scaffold device. Next, a scaffold device using the scaffold member according to the present invention will be described.
[0032]
FIG. 2 is a partially enlarged sectional view showing an assembly process of the scaffold device using the scaffold member according to the present invention, and FIG. 3 is a partially enlarged sectional view showing a process subsequent to the process shown in FIG. In the figure, the receiving member 4 is a scaffold pipe. However, the receiving member 4 is not limited to the illustrated scaffolding pipe as long as the receiving member 4 has a socket portion. The illustrated receiving member 4 includes a pipe base 40 and a plurality of socket portions 41. For example, four socket portions 41 are arranged on the outer periphery of the pipe base 40. The scaffold member 1 is a scaffold member according to the present invention described with reference to FIG.
[0033]
First, as shown in FIG. 2, the latching portion of the scaffold member 1 is inserted into one of the socket portions 41 of the receiving member 4. In the state shown in FIG. 2, the slider 3 of the receiving member 4 is hooked on the outer surface of the upper wall 11 at the angle A2 by the first hooking piece 35, and the tip 37 is placed on the convex guide 25. ing. The angle A <b> 2 indicates an angle generated between the lower surface 33 of the slider 3 and the bottom wall 22.
[0034]
In the state of FIG. 2, when the operator operates the head portion 34 of the slider 3 to remove the first hooking piece 35 from the upper wall 11 and the tip end portion 37 from the convex guide 25, the slider 3 is The inside of the slider groove 20 is moved in the A1 direction according to gravity.
[0035]
The slider 3 moved in the A1 direction is lifted away from the bottom wall 21 of the slider groove 20 according to the inclination angle of the inclined surface 31 while the inclined surface 31 contacts the convex guide 25.
[0036]
As a result, as shown in FIG. 3, the first contact position P <b> 1 is generated between the inclined surface 31 and the convex guide 25, and the second contact point is formed between the inner wall surface of the socket portion 41 and the upper surface 32 of the slider 3. Is generated, and a third contact position P3 is generated between the start position of the inclined surface 31 and the bottom wall 22 of the slider groove 20. A frictional force is continuously generated in each of the first to third contact positions P1 to P3. For this reason, the scaffold member 1 and the receiving member 4 are fixed via the slider 3, and this fixed state continues to be maintained.
[0037]
In this state, when the scaffold device vibrates or shakes due to strong winds or movement of workers, the slider 3 further penetrates deeply into the slider groove 20 due to its own weight or the like, and bites it more strongly. Therefore, the coupling strength due to the first to third contact positions (P1 to P3) described above is further improved. For this reason, the scaffold member 1 and the receiving member 4 continue to be fixed via the slider 3 more firmly.
[0038]
Next, when the scaffold device is disassembled, in order to remove the scaffold member 1 from the socket portion 41 of the receiving member 4, an operator puts a finger on the head portion 34 of the slider 3 and pulls out the slider 3, The contact state at the third contact position (P1 to P3) may be canceled. The slider 3 is movably disposed inside the slider groove 20, and the inclined surface 31 of the slider 3 has an inclination direction that does not generate resistance with respect to the direction in which the slider 3 is pulled out. The slider 3 can be easily pulled out with a weak force, and the contact state at the first to third contact positions (P1 to P3) can be easily released.
[0039]
As described above, according to the scaffold member according to the present invention, it is not necessary to hit the head portion 34 with a hammer or the like in any of the assembly and disassembly of the scaffold device, and the slider 3 is placed inside the slider groove 20. Just operate with. Therefore, no problems such as damage or deformation occur in the wedge-shaped latching part, etc., and no noise is generated, so noise considerations are almost unnecessary even in construction sites close to residential areas, hospitals, schools, etc. . In addition, there are no health problems for workers to cause tendonitis.
[0040]
FIG. 4 is a partially enlarged cross-sectional view showing the operation limit of the scaffold device using the scaffold member according to the present invention. Referring to FIG. 4, the slider base 30 and the bottom wall 22 are in close contact with each other inside the slider groove 20, and the intrusion posture of the slider 3 can no longer be changed. From another viewpoint, the first to third contact positions (P1 to P3) are generated in the range from the state of FIG. 3 to FIG. 4, and the scaffold member 1 and the receiving member 4 are securely fixed. Can continue. The limit for generating the first to third contact positions (P1 to P3) can be adjusted by selecting the thickness of the slider 3 and the inclination angle of the inclined surface 31.
[0041]
Although the contents of the present invention have been specifically described above with reference to the preferred embodiments, it is obvious that those skilled in the art can take various modifications based on the basic technical idea and teachings of the present invention. It is.
[0042]
【The invention's effect】
As described above, according to the present invention, the following effects can be obtained.
(A) It is possible to provide a scaffold member that can be easily assembled and disassembled without using tools, and a scaffold device using the same.
(B) It is possible to provide a scaffold member that can be reliably fixed and a scaffold device using the same.
[Brief description of the drawings]
FIG. 1 is a partially cutaway front view of a scaffold device according to the present invention.
FIG. 2 is a partially enlarged sectional view showing an assembly process of the scaffold device according to the present invention.
FIG. 3 is a diagram showing an assembly process following FIG. 2;
FIG. 4 is a partially enlarged cross-sectional view showing an operation limit of the scaffold device using the scaffold member according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Main collar part 2 Latching part 20 Slider groove 21 Side wall 22 Bottom part wall 25 Convex guide 3 Slider 30 Slider base body 31 Inclined surface

Claims (2)

A scaffold member including a latching portion and a slider,
The latching portion is wedge-shaped and includes a slider groove and a convex guide,
The slider groove has two side walls and a bottom wall,
The two side walls rise on both sides of the bottom wall and oppose each other;
At least one of the convex guides is arranged in the vicinity of the tip inside the slider groove,
The slider is rod-shaped and has an inclined surface on one end side in the longitudinal direction, and the inclined surface is inclined in a direction of decreasing the thickness toward the tip,
The slider is movably disposed inside the slider groove such that the inclined surface faces the bottom wall.
With the latching portion inserted into one of the socket portions of the receiving member provided on the scaffolding pipe, the tip of the slider placed on the convex guide is removed from the convex guide. Then, the slider falls inside the slider groove according to gravity, and a first contact position P1 is generated between the inclined surface and the convex guide, and the inner wall surface of the socket portion and the slider A second contact position P2 occurs between the upper surface and the third contact position P3 between the start position of the inclined surface and the bottom wall of the slider groove, and the first to third contacts. The scaffold member and the receiving member are fixed via the slider by the frictional force generated at each of the positions P1 to P3.
Scaffolding member. A scaffold device including a scaffold member and a receiving member,
The receiving member includes a socket part,
The said scaffold member is what was described in Claim 1, The said latching part is a scaffold apparatus inserted in the said socket part of the said receiving member.

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