JPS6222600Y2 - - Google Patents

Description

[Detailed description of the invention] In the conventional concrete formwork connector in which a nut is attached to one side vertical piece of a U-shaped metal that fits the horizontal beams of the concrete formwork, the nut is attached to a separator with a terminal. When screwing into the screw protruding from the weir plate and tightening and fixing the weir plate with the terminal and nut, the nut feed is slow and the transition length is long, so there is a lot of rotating operation of the coupling, and it takes a lot of time to tighten. It used to have a drawback of poor work efficiency.

Therefore, the present invention solves the above-mentioned defects and screws onto the screw protruding from the weir plate of the separator with a terminal with one touch, making it possible to connect the separator to the protruding screw and tighten the weir plate easily and quickly, thereby increasing work efficiency. This invention relates to a concrete formwork connector that improves the performance of concrete forms.

To explain the structure of one embodiment of the present invention shown in the drawings, a indicates a concrete formwork connector, 1 is a square-shaped metal forming the main body of the connector a;
A through hole 2 is drilled in the center of the side vertical piece, and wedge holes 3 and 4 are provided in the middle and tip of the upper and lower pieces, respectively. Both free ends of the U-shaped pedestal 5 with a widening end are fixed.

Reference numeral 6 designates a horizontally cylindrical case body, the outer periphery of one end of which has a small diameter 7, a projecting edge 8 is provided inwardly of the first end, and the inner peripheral surface is formed into a taper 9 that widens on the other side; Inside the case 6, two nut segments 10 and an annular elastic plate 11 made of foamed synthetic resin such as urethane or rubber are housed in order from one side, and an annular seat plate 12 is fitted to the other end of the case 6. and fix it to case 6. Then, insert the small diameter portion 7 on the first side of the case 6 into the center hole of the vertical piece on the first side of the U-shaped pedestal 5, and
The tip of the small diameter portion 7 on the first side is slightly protruded to form the case 6.
is fixed to the U-shaped pedestal 5 to constitute the concrete formwork connector a.

Reference numeral 13 denotes a separator, which is provided with screws 14 at both ends and a stopper 15 at the base end of the screws 14. A terminal 16 is screwed onto the screws 14 up to the stopper 15. Reference numeral 17 denotes a wedge.

A is a weir plate that constitutes the concrete formwork, and through holes 18 are bored at appropriate locations. B shows the vertical beams of the square pipes that are applied to the outside of the weir plate A, C shows the horizontal beams of the square pipes that are combined on the outside, and D shows the concrete walls.

Next, its effect will be explained. After erecting both side weir plates A and inserting the screws 14 at both ends of the separator 13 with terminals 16 into the through holes 18, grasp the connector a and insert the end surface of one side of the nut segments 10, 10 into the protrusion of the screws 14. When the coupling tool a is pushed in against the tip of the nut segment 10, 10, the nut segments 10, 10 resist the elasticity of the elastic plate 11, move toward the larger diameter side of the tapered surface 9, expand, and the nut segments 10, 1
The inner diameter of the screw hole due to 0 is expanded, and the threads of the nut segments 10, 10 are aligned with the screw 1 of the separator 13.
Connector a moves straight by sliding on the thread of No.4. When reaching the weir plate A, the nut segments 10, 10 move to the smaller diameter side of the tapered surface 9 due to the elasticity of the elastic plate 11, contrary to the above, and return to the state shown in FIG. 3 and contract. nut segment 10,10
The inner diameter of the screw hole is narrowed and screwed into the screw 14. Thereafter, by slightly rotating the connector a and screwing it in, the weir plate A is held between the terminal 16 and the case 6 of the connector a.

Therefore, after arranging the vertical beams B on the outer surface of the weir plate A, the horizontal beams C are fitted into the U-shaped bracket 1 and assembled on the outside of the vertical beams B, and then the wedges 17 are installed. When driven into the wedge hole 4, the terminal 16 and the wedge 17 sandwich the weir plate A and the vertical and horizontal flaps B and C and tighten and fix them together. Configure formwork.

Note that the nut segment 10 in the case 6
It works in the same way even if there are three.

A circumferential groove having a diameter larger than the large diameter end is provided at the large diameter end of the tapered surface 9 in which the nut segment 10 in the case 6 is fitted, and the elastic plate 11 is fitted into the circumferential groove. Good too.

The same effect can be achieved even if a spring is used as the elastic body instead of the elastic plate 11 described above.

Furthermore, the present invention can be applied to a concrete formwork connector equipped with a U-shaped metal whose upper and lower pieces are shorter than those shown in the drawings and only wedge holes 4 are provided in the upper and lower pieces. It works the same way.

Since the concrete formwork connector of the present invention is constructed as described above, grasp the connector, place one end surface of the nut segment against the tip of the screw protruding from the weir plate of the separator, and push the connector. This allows the connector to move straight along the separator,
On the other hand, after pushing the connector up to the weir plate, it automatically screws into the separator screw. Therefore, by simply pushing the connector without rotating it, it can be screwed into the screw of the separator to a predetermined position, and after that, by simply rotating the connector slightly, the weir plate can be tightened by the connector. Compared to the conventional method of rotating the connecting tool from start to finish and moving it along the threads of the separator to tighten the weir plate, there is far less rotational operation of the connecting tool, and the tightening of the weir plate with the connecting tool can be done with one touch, making it easier to handle. To easily and significantly save time and labor, and to assemble concrete formwork easily, quickly and precisely, thereby improving work efficiency.

Furthermore, it has a simple structure, can be manufactured easily and inexpensively, operates light and smoothly, and is securely and firmly fixed.

[Brief explanation of the drawing]

Fig. 1 is a front view of a concrete formwork connector according to an embodiment of the present invention, Fig. 2 is a plan view, Fig. 3 is an enlarged front sectional view of the first side attachment part, and Fig. 4 is Fig. 3. Fig. 5 is a front sectional view of a concrete form assembled using the same concrete form connector. 1... U-shaped metal, 3, 4... Wedge hole, 6... Case, 9... Taper, 10... Nut segment, 11... Elastic body, C... Horizontal bar material.

Claims (1)

[Scope of utility model registration request] A wedge hole is provided in the upper and lower pieces of the U-shaped metal fitting that fits into the horizontal beam, and a wedge hole is provided on the outside of the center of the vertical piece on one side of the U-shaped metal piece.
A concrete formwork connector that is equipped with a horizontal cylindrical case whose inner peripheral surface is tapered so that the other side widens, and in which several nut segments and an elastic body are housed sequentially from one side.