JPH0242834Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial field of application) This invention relates to a washer for a concrete formwork connector, which is used as a connector when assembling concrete formwork.

(Prior art) When assembling a concrete formwork for constructing a concrete structure by pouring concrete, the end pieces are placed on the outside of the form panel, and the end pieces are vertically placed on the inside. When a horizontal end piece was placed outside the vertical end piece, the leg of the washer was long, whereas when only a horizontal end piece was used, a washer with a short leg was used. However, there are cases where the lateral thick members are located below concrete formwork clamping rods that are horizontally arranged outside the formwork connected to the separator. In such cases, the conventional washer with one long leg and one short leg as described above is used with the top and bottom reversed, so that the horizontal thick material does not carry its own weight during or after tightening the concrete formwork. There was a high risk of it falling downward from the washer.

(Problem to be solved by the invention) Therefore, the invention provides a support piece for supporting the horizontal thick material in the direction of the formwork panel in the part of the washer located below the tightening rod, and the above-mentioned end Even when placed outside of a thick formwork panel, the horizontal thick piece can be safely and firmly supported below the concrete formwork clamping rod.

(Means for solving the problem) In order to solve the above-mentioned problem, this invention is such that the washer 1 of the concrete formwork connector a is arranged such that the upper and lower parts of the vertically long rectangular plates are oriented at right angles in opposite directions. A long leg 3 is bent at the upper end of the vertical piece 2, and a short leg 4 is provided at the lower end of the vertical piece 2, and the tips of the long and short legs 3, 4 are bent at a right angle in the opposite direction to the vertical piece 2 to form a backing piece 5. ，
6, extending from the vertical piece 2 to the long and short legs 3 and 4 in their width direction (in this invention, the backing piece 6,
The direction in which the short legs 4, the vertical pieces 2, the long legs 3, and the backing pieces 5 are continuous is called the length direction, and the direction perpendicular to the above direction is called the width direction. ) with an S-shaped cross section, one half of which is formed into a longitudinal rib that projects toward one side, and the other half formed into a longitudinal rib that projects toward the other surface,
In the longitudinal middle part of the vertical piece 2, there is a horizontally elongated hole 7 that spans both ribs, and in the ribo, there is a wedge insertion hole 9 that extends from the middle part of the long leg 3 to the top of the vertical piece 2. A wedge insertion hole 8 is formed extending from the lower part of the short leg 4 to the middle part of the short leg 4, and a tongue-shaped support piece 11 is inserted from the base of the insertion hole 8 near the vertical piece 2.
is bent at a right angle in the opposite direction to the backing piece 6 to protrude, and on the other hand, a tongue-like support piece 12 is bent at a right angle in the opposite direction to the backing piece 5 to protrude from the base of the insertion hole 9 near the vertical piece 2. do.

(Effects similar to the embodiment) As shown in FIG. Screw together, washer 1
With the long legs 3 on the upper side and the short legs 4 on the lower side, combine the vertical thick material B on the outside of the formwork panel A, and the horizontal thick material C on the outside of the vertical thick material B. A concrete formwork is formed by the rear washer 1 and the wedge piece 15, but depending on the situation at the turning site, there may be times when the thick horizontal member C has to be positioned below the connecting rod 14. That's what I do.

Therefore, in such a case, the backing piece 5 of the long leg 3 of the washer 1 is brought into contact with the panel A, and the lateral thick material C is mounted on the tongue-shaped protruding support piece 11 provided on the short leg 4 side. After that, the panel A, the vertically thick material B, and the horizontally thick material C are combined to form a formwork using the tightening rods 14 and the wedge pieces 15.

In addition, as shown in FIG. 6, when assembling a formwork by combining only the thick side members C with the formwork panel A, the short legs of the washer 1 should be turned upside down from the above state. with the backing piece 6 on the top side and the formwork panel A
The wedge piece 15 is inserted into the insertion hole 16 of the tightening rod 14, which is screwed into the separator 13. Insertion hole 9 drilled in long leg 3 of
to form the formwork.

(Effect of idea) This idea has the following effects.

(1) The washer of this invention can be used when assembling formwork.
Not only can it be used for both the construction method of using thick timbers on both vertical and horizontal ends, but also the construction method of using only thick timbers of horizontal ends, and in addition, depending on the site situation, horizontal It is particularly effective when used in cases where thick pieces of wood are installed, and excellent workability can be expected.

(2) The cross section of the washer is S-shaped as mentioned above, and each half is formed with longitudinal ribs that protrude toward opposite sides, so the ribs continuously reinforce the entire body. , strength is maintained.

(3) The structure is simple and can be easily manufactured.

[Brief explanation of the drawing]

Fig. 1 is a front view of the washer of the present invention, Fig. 2 is a side view, Fig. 3 is a plan view, Fig. 4 is a sectional view taken along line B-B of Fig. 1, and Figs. This is an explanatory diagram of the use of the washer of the invention. Fig. 5 shows when vertical and horizontal thick timbers are used, and Fig. 6 shows when assembling the formwork using only horizontal thick timbers. 1...Washer, 2...Vertical piece, 3...Long leg, 4...
Short leg, 5, 6...Piece, 7...Horizontal hole, 8, 9
... Wedge insertion hole, 11, 12 ... Tongue-shaped support piece, 13 ... Separator, 14 ... Tightening rod, 15
... Wedge piece, 16... Wedge insertion hole, A... Formwork panel, B... Thick vertical lumber, C... Thick horizontal lumber.

Claims (1)

[Scope of utility model registration request] The upper and lower parts of a vertically long rectangular plate are bent at right angles in opposite directions, and a long leg is provided at the upper end of the vertical piece, and a short leg is provided at the lower end of the vertical piece, and the tips of the long and short legs are bent in the opposite direction to the vertical piece. A rib is bent at right angles to form a backing piece, extends from the vertical piece to long and short legs, has an S-shaped cross section in the width direction, and has a longitudinal rib with one half protruding toward the first side. Each half is formed into a longitudinal rib that protrudes to the other side, and the longitudinal middle part of the vertical piece has a tightening rod insertion hole spanning both ribs, and the first half rib has a short leg. A wedge insertion hole is drilled in the rib of the other half, extending from the middle part of the long leg to the middle part of the long leg. A washer for a concrete formwork connector, which is provided with tongue-shaped support pieces bent at right angles to each other in directions opposite to the long and short legs.