JP2583892Y2 - Bracket for temporary scaffold - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bracket for a temporary scaffold attached to a temporary scaffold at a construction site, and more particularly to a bracket for a temporary scaffold in which a scaffold plate locking arm for locking a scaffold plate can be extended and contracted.

[0002]

2. Description of the Related Art In construction work of a building, as shown in FIG. 9, a temporary scaffold is formed by stacking a plurality of scaffold frames A in the vicinity of the building in accordance with the height of the building. Although the scaffolding frame A is stacked near the building, there may be a gap between the scaffolding frame A and the building. In this case, the temporary scaffolding bracket 1 is prepared.
The bracket 3 is attached to the building of the scaffolding frame A by the fixture 3 provided on the vertical member 2 of the bracket, and the clamp 5 of the scaffolding plate B is hung between the horizontal members 4 of the adjacent brackets so that the space between the scaffolding frame A and the building is formed. A scaffold is formed in the gap.

At this time, the distance of the gap between the scaffolding frame A and the building often varies depending on the location. As disclosed in Japanese Utility Model Laid-Open Publication No. 4-84656, the horizontal member 4 is made of an outer pipe and an inner pipe. There is a configuration in which the gap can be adjusted by making it extendable and contractible. The lower portion of the inner tube is recessed to form a guide groove so that the inner tube does not rotate or come off when the horizontal member expands and contracts, and the projection provided on the inner surface of the outer tube is fitted into the guide groove. There are many.

[0004]

However, when the guide groove is formed by depressing the lower portion of the inner tube, the width of the inner tube tends to be slightly widened, but the height is reduced and the sectional modulus is reduced without the groove. It becomes considerably smaller than the original tube body, and it is necessary to consider, for example, increasing the thickness of the inner tube material in order to secure a predetermined bending strength.

SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a bracket for a temporary scaffold in which a reduction in section modulus is reduced as much as possible by devising a molding position of a guide groove.

[0006]

According to the present invention, in order to achieve the above object, an arm for anchoring a scaffold plate, which is mounted at right angles to a support member having means for mounting to a scaffold frame, is formed by an outer pipe and an inner pipe. in temporary scaffolding bracket and telescopically constructed, that the longitudinal direction on both left and right sides of the inner tube member
The guide groove is formed respectively, in the left and right sides of the inner surface of the outer tube member viewed Mari write fitted in the guide grooves of the inner tube member, the rotation of the inner tube
And a projection for preventing the falling off.

[0007]

According to the present invention, a guide groove is formed by pressing both sides of the inner tube by pressing while maintaining a part of the base end of the inner tube in the original outer shape of the inner tube. Although the cross section of the portion where the guide groove is formed has a slightly narrower width in the horizontal direction, the height in the vertical direction does not change, and a decrease in the section modulus can be suppressed as much as possible. Therefore, the bending strength of the inner pipe material before processing is not significantly reduced, and the thickness of the inner pipe material does not need to be particularly considered along with the formation of the guide groove. Also, the engagement between the guide groove of the inner pipe material and the projection of the outer pipe material can prevent the inner pipe material from turning and being prevented from coming off.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

First, referring to FIG. 1 to FIG.
Reference numeral 0 denotes a bracket of the present invention, in which a column member 11 composed of a square pipe having an appropriate length is a vertical member, and a mounting member 12 as a means for mounting to a scaffold frame is fixed to both ends of the column member 11. I have. A rotation member 13 having an approximately U-shaped cross section and an appropriate length is positioned in the middle portion of the support member 11 such that a concave portion of the rotation member 13 fits into the support member 11, and a bolt 14 is inserted near an upper portion thereof. The rotation member 13 is rotatably mounted on the shaft.

At the lower end of the rotating member 13, a locking arm 15, which is a horizontal member for locking the scaffold B, is fixed at a right angle to the rotating member 13. Reference numeral 15 denotes the column member 1
1 and is held horizontally while the rotating member 13
The structure is such that the bolt 14 can be pivoted upward about the shaft attachment portion of the bolt 14 and jumped up.

The locking arm 15 is connected to the outer tube 16 by the inner tube 1.
7 is inserted into the inner tube 17 so that it can be expanded and contracted. The inner tube 17 is pressed straight from the base end toward the distal end from a position spaced a predetermined distance from the proximal end toward the distal end. The guide groove 18 is formed when the inner pipe 17 is made to protrude and retract from the outer pipe 15. By forming the guide grooves 18 by depressing both side surfaces of the inner pipe 17 in this manner, the section modulus of the inner pipe 17 does not have to be much lower than the section modulus of the original inner pipe before processing. .

On the other hand, at a predetermined position on the inner surface of the outer tube 16, a projection 19 to be fitted into the guide groove 18 of the inner tube 17 is formed by press working. The press forming of the projection 19 may be performed after the inner pipe 17 is attached to the outer pipe 15.
A nut 20 is fixed to the lower end of the outer tube 16, and a bolt 21 is screwed into the nut 20 so that the outer tube 16 penetrates. 17 is fixed at an arbitrary position.

An engaging member 22 for engaging and fixing the rotating member 13 is provided near the shaft attachment portion of the rotating member 13.
And a tension spring 23 for attracting the spring. The engaging body 22 is a bar-shaped body having a substantially rectangular shape in a spiral shape, and one side of the upper part of the engaging body 22 is attached to a pipe 24 fixed to the side surface of the support member 11 so as to be rotatable. The engaging body 22 is urged by the tension spring 23 attached to the shaft 25 fixed to the support 11 so as to be pulled toward the support 11.

The upper edge of the turning member 13 is formed in a substantially arc shape so that the lower side 22a of the engaging body 22 can turn while contacting when the locking arm 15 is flipped up. The lower edge 2 of the engaging body 22 is located at the center of the upper edge.
An engagement hole 26 having a size that fits into the engagement member 2a is cut out, and the engagement hole 26 engages the lower side 22a of the engagement body 22 when the locking arm 15 is flipped up to level the rotation member 13. The locking arm 15 can be held in a flipped-up state.

A support member 27 for supporting the locking arm 15 at right angles to the column member 11 is projected below the column member 11, and a locking arm is provided at the tip of the support member 27. A receiving plate 28 for receiving the lower surface of the 15 is attached.

Inner tube 1 which is a free end of locking arm 15
7, a collar body 29 for locking the scaffold plate B and a slip stopper 30 for preventing the scaffold plate B from shifting along the locking arm 15 are fixed. 30 and a scaffold plate B at the free end of the locking arm 15
The clamp 5 for hanging the clamp 5 is mounted.

As shown in FIGS. 6 and 7, the clamp fastener 31 is formed by bending a rod-like body into a substantially U-shape. One end of the clamp fastener 31 includes a compression spring 32 and a sleeve 33 having substantially the same diameter as the compression spring 32. A clamp is provided by inserting a central portion of a cylindrical body 34 having one end fixed to the receiving plate 28 and inserting a retaining pin 36 inserted through a through hole 35 formed in the lower surface of the inner pipe member 17. 31 is retained.

Further, a fitting groove 37 is formed radially in the cylindrical body 34, so that the clamp fastener 31 is pushed and rotated against the compression spring 32, and the hand is released at an arbitrary position. The retaining pin 36 of the clamp metal fitting 31 is fitted in the fitting groove 37 so that it can be fixed at an arbitrary position. Further, the tip of the other end of the clamp fitting 31 is slightly bent inward so that the clamp 5 of the scaffold plate B can be securely hooked.

Next, a method of using the bracket having the above structure will be described.

First, as shown in FIG. 8 (a), the bracket 10 is attached to the scaffold frame A of the temporary scaffold via the fixture 12, and the locking arm 15 is integrated with the rotating member 13 by its own weight at the shaft attachment portion. When the bolt 14 is pivoted downward around the center, the pivoting member 13 having a substantially U-shaped cross section is used.
1 to hold the locking arm 15 in a horizontal state.
At this time, the receiving plate 22 of the support member 21 protruding from the column member 11 abuts on the lower surface of the locking arm 15 and acts as a reinforcing member.

Next, the scaffold plate B is placed between the adjacent brackets 10 attached to the scaffold frame A of the temporary scaffold. When the space between the scaffold frame A and the wall of the building is wide, the scaffold plate B is used for locking. Bolt 2 at the lower end of outer tube 16 constituting arm 15
1 is loosened and the inner tube 17 is pulled out from the outer tube 16.

A guide groove 18 is formed on both side surfaces of the inner pipe member 17, and a projection 19 that fits into the guide groove 18 is formed on the inner peripheral surface of the outer pipe member 16. 17 is pulled out without being rotated by being regulated by the projection 19. Further, since the guide groove 18 is formed at a predetermined distance from the base end of the inner pipe member 17 to the distal end side, when the inner pipe member 17 is pulled out, it stops at the end of the guide groove 18 and does not fall off.

After the inner tube 17 is pulled out, the bolt 21 is screwed in and the inner tube 17 is pressed and fixed.
The scaffold plate B is locked across the inner pipe 17 and the outer pipe 16 to form a scaffold.

The cross-sectional shape of the inner pipe 17 is slightly smaller in width than the original pipe shape, but the height does not change. Since there is almost no decrease in strength, the inner pipe material 1
A predetermined supporting strength can be ensured without making the thickness of the 7 special.

Further, the scaffolding plate B supported by the bracket 10 becomes an obstacle when performing construction work such as painting or tiling of the outer wall of the building, so that the scaffolding plate B is attached as shown in FIGS. 8 (b) and 8 (c). The locking arm 15 is flipped upward while being attached. As a result, the locking arm 15 is fixed to the bolt 14 of the shaft attachment portion of the rotating member 13 which is integrally fixed.
Around the center. As shown in FIG. 8B, the upper edge of the turning member 13 is brought into engagement with the engaging body 22 as the locking arm 15 turns.
8 (c).
When the rotation member 13 is in the horizontal state as described above, the lower side 22a is fitted into the engagement hole 26 at the upper edge and fixed.

Further, the scaffold plate B is fixed with the clamp fastener 31 so that the scaffold plate B does not fall off from the bracket 10. The operation method of the clamp fastener 31 is as follows. At the time of mounting, as shown by the imaginary line in FIG. 7, the clamp fitting 31 is rotated leftward or rightward depending on the latching side direction of the scaffold plate so as not to hinder the locking of the scaffold plate B. The turning operation of the clamp fastener 31 can be freely rotated by pushing the clamp fastener 31 against the compression spring 32.

Then, when the scaffold plate B is hung over the bracket 10, the clamp fastener 31 is rotated to the vertical position and is hung on the clamp 5 of the scaffold plate B. If the clamp fastener 31 is hung on the clamp 5 of the scaffold plate B as described above, the scaffold plate B will not fall off even if the bracket 10 is flipped up.

In the above-described embodiment, an example in which the present invention is applied to a flip-up type bracket has been described. However, it is needless to say that the present invention can be applied to a bracket which is not a flip-up type.

[0029]

As described above, according to the bracket according to the present invention, the guide grooves 18 are formed by press working on both side surfaces of the inner pipe member 17 of the locking arm 15 for locking the scaffold plate B. The cross-sectional shape of the tube 17 is substantially cocoon-shaped, and the cross-sectional modulus of the inner tube 17 does not decrease much less than the cross-sectional coefficient of the original tube itself. I will not do it. Also,
Engagement of the guide groove 18 of the inner pipe 17 with the projection 19 of the outer pipe 16 can prevent the inner pipe 17 from rotating and preventing it from coming off.

[0030]

[Brief description of the drawings]

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

FIG. 2 is a side view of FIG.

FIG. 3 is a plan view of FIG. 1;

FIG. 4 is an enlarged sectional view taken along line CC of FIG. 1;

FIG. 5 is a partially cutaway sectional view of a distal end portion of an outer tube material.

FIG. 6 is a partially cutaway sectional view of a distal end portion of an inner pipe material.

FIG. 7 is a view for explaining the operation of a clamp fitting at the distal end of the locking arm.

FIG. 8 is a diagram illustrating the operation of the bracket.

FIG. 9 is an explanatory view showing a use state of a conventional bracket.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Bracket 11 ... Prop material 12 ... Fixture 13 ... Rotating member 14 ... Bolt (shaft attaching part) 15 ... Locking arm 16 ... Outer pipe material 17 ... Inner pipe material 18 ... Guide groove 19 ... Projection part 22 ... Engagement body 23 ... Tension spring 26 ... Engagement hole 27 ... Support material 31 ... Clamp fastener

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E04G 5/06

Claims (1)

(57) [Scope of request for utility model registration] 1. A temporary scaffolding bracket which is made of an outer tube and an inner tube so as to be extendable and contractable, comprising a scaffold plate locking arm attached at right angles to a column member provided with means for attaching to a scaffold frame. Guide grooves along its length on the left and right sides of
The outer pipe material is fitted into each guide groove of the inner pipe material on the left and right inner surfaces thereof, and provided with a projection for preventing rotation and retaining of the inner pipe material, for a temporary scaffold. bracket.