JPS6334037Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a concrete formwork consisting of a frame made of an extruded product such as aluminum material and a formwork plate, and the present invention relates to a concrete formwork consisting of a frame made of an extrusion molded product such as aluminum material and a formwork plate. The purpose is to provide a concrete formwork that can form a substantially flush concrete surface in the same way as when using a concrete formwork.

That is, as shown in the attached illustrative diagram, the concrete formwork of the present invention includes a pair of left and right side frames 1 and a connecting frame 2 that connects at least both ends of the side frames 1. The sides 3 are made to protrude beyond the inner side end surfaces 2a of the connecting frame 2, and form frame plate fitting grooves 4 are provided inside the inner side edges 3 of both sides of the connecting frame 2 that protrude from the inner side end surfaces 2a of the connecting frame 2. The mold is formed so that the inner side end surface 2a of the groove 2 and the one side surface 4a of the groove 4 are substantially flush with each other, and the outer corner portions 5a of both left and right sides of the form plate 5 are cut out to reduce the wall thickness. The left and right sides 5b of the frame plate are fitted into the frame plate fitting grooves 4 in the pair of side frames 1, and the outer surface 5 of the frame plate 5 is fitted.
c and the inner side end surfaces 3a of the pair of side frames 1 are configured to be flush with each other.

In the illustrated embodiment, in addition to the connecting frame 2 that connects both ends of the side frame 1, there is also a central connecting frame 6 interposed at the longitudinal center of the side frame 1, and this central connecting frame. 6 and an intermediate connecting frame 7 interposed at an intermediate position between the connecting frames 2 at both ends are used. A wide recess 9 for material saving is formed on the outside between the inner side 3 and the outer side 8 over the entire length of the pair of side frames 1. Through-holes 10 and nail holes 11 for inserting clip pins for connecting the formworks are provided at appropriate intervals in the widthwise direction. The connecting frames 2 at both ends and the central connecting frame 6 have the same structure, and a wide recess 12 similar to the wide recess 9 is formed over the entire length. Through-holes 13 for inserting clip pins for connecting formwork to each other are provided at appropriate intervals in the horizontal direction.
and a nail hole 14 are provided. Furthermore, protrusions 15 and 16 having a C-shaped cross section are integrally molded over the entire length of the connecting frames 2 and 6 at positions near both the inner and outer sides of the recess 12. The intermediate connecting frame 7 has a thin plate shape compared to the connecting frames 2 and 6, and has a recess 1.
2, a through hole 13, and a nail hole 14 are not provided, but two protrusions 15 and 16 having a C-shaped cross section are integrally molded. A pair of side frames 1 and each connecting frame 2, 6, 7
The connection is made by screwing the tapping screw 17 passed inward from the recess 9 of the side frame 1 into the two-stage protrusion 15, 16 of each connecting frame 2, 6, 7 by self-tapping. It is going by.

The side frame 1 and each of the connecting frames 2, 6, and 7 are made of an extrusion molded product of aluminum or the like to a predetermined length, for example, the side frame 1 is 1200 mm wide, and the connecting frames 2, 6, and 7 are formed of a form plate 5 with a width of 600 mm. It can be cut to a usable length and used. Also, in this case, the formwork plate 5 has a thickness of 12 mm.
Two sheets of 600mm x 600mm plywood can be used. At this time, the abutting portion of the two plywood sheets is covered by the inner side end surface of the central connecting frame 6. If,
If plywood of 1200 mm x 600 mm can be used, the thin plate-shaped intermediate connecting frame 7 can be used as the central connecting frame 6.

The concrete formwork of the present invention can be implemented as described above, and the formwork plate 5 is sufficiently reinforced by the frame assembled by the side frame 1 and at least the connecting frames 2 at both ends, and the formwork plate 5 is fully reinforced and used. In this case, these frameworks can be connected together and used as a large concrete formwork panel. In particular, according to the structure of the present invention, the formwork board fitting grooves 4 of the side frame 1
The outer surface 5c of the formwork plate 5 and the side frame 1 whose both sides are fitted
The side frame 1 is flush with the inner side end surface 3a of the formwork plate 5, so that the side frame 1 is flush with the outer surface 5c of the formwork plate 5, as in the conventional formwork of this type.
There is no inconvenience such as grooves being formed on the surface of the poured concrete, which is the case when the concrete protrudes from the concrete surface.

In addition, as in the embodiment, the connecting frames 2, 6, and 7 have a cross section C.
By integrally molding the shaped protrusions 15 and 16, even when cutting to any length, the pair of side frames 1 can be easily and reliably connected using the tapping screws 17. . Also, formwork board 5
Nail holes may be provided in the side portions 18 of the connecting frames 2, 6 that come into contact with the formwork plate 5 so that the connecting frames 2, 6 can be nailed to appropriate locations on the connecting frames 2, 6. Of course, a connecting frame similar to the end connecting frame 2 or the central connecting frame 6 can also be used as the intermediate connecting frame 7.

[Brief explanation of the drawing]

Figure 1 is a plan view, Figure 2 is a side view of the main parts, and Figure 3 is a plan view.
The figure is a partially cutaway front view, Figure 4 is a partial vertical front view showing the joint between the side frame and the end connecting frame, Figure 5 is a vertical side view of the end connecting frame position, and Figure 6 is the intermediate view. It is a vertical side view of a connection frame position. 1... A pair of side frames, 2... Both end connecting frames, 2a...
...Inner side end face, 3...Inner side of the side frame, 3a...Inner side end face of the side frame, 4...Groove for fitting the formwork plate, 4a...Groove one side, 5...Formwork plate, 5a...Removal Both sides of the formwork plate, outer corners, 5b...Both sides of the formwork plate, 5c
...Outer surface of formwork plate, 6... Central connecting frame, 7... Intermediate connecting frame, 9, 12... Wide recess, 10, 13...
Through hole for insertion of coupling clip pin, 11,
14... Nail hole, 15, 16... C-shaped cross section protrusion, 1
7... Tapping screw.

Claims (1)

[Scope of utility model registration request] It is equipped with a pair of left and right side frames 1 and a connecting frame 2 connecting at least both ends of the side frames 1, and the inner side 3 of the both side frames 1 is made to protrude beyond the inner side end surface 2a of the connecting frame 2, Formwork plate fitting grooves 4 are provided on the inner sides of both side frame inner sides 3 that protrude from the inner side end faces 2a of the connecting frame 2.
and one side 4a of the groove 4 are formed so that they are substantially flush with each other, and the left and right sides 5b of the formwork plate 5 are reduced in thickness by cutting off the outer corners 5a of both left and right sides of the formwork plate 5.
is fitted into the formwork plate fitting grooves 4 in the pair of side frames 1, and the outer surface 5c of the formwork plate 5 and the inner edge surface 3a of the pair of side frames 1 are flush with each other. Formwork.