JPH069253Y2 - Metal fittings for hanging formwork for forming through holes such as ventilation openings - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a hanging metal fitting for a through hole forming frame for forming through holes such as ventilation holes in concrete such as basic concrete.

[Prior Art] Generally, as shown in FIG. 4, basic concrete is formed by placing concrete between opposing concrete molding templates 1. In order to provide a ventilation hole in this basic concrete, a through-hole forming mold 2 is used, the mold 2 is inserted between concrete mold plates 1, and a hooking portion 3 provided in the mold 2 is used. Is hung on the upper end of the template 1 and the whole is suspended. In this way, ventilation holes that form the outer shape of the mold 2 are formed in the basic concrete.

[Problems to be solved by the invention] In this case, if the thickness of the foundation concrete is increased, it is naturally necessary to use a formwork having a depth corresponding thereto. Therefore, it is necessary to prepare many types of formwork according to the type of thickness of the basic concrete, which is a great burden on the cost. In order to avoid this, it has been conventionally practiced to attach a wood piece 5 to the main body 4 of the mold 2 and sandwich the wood piece 5 between the main body 4 and the basic concrete molding template 1 as shown in FIG. It was done.

However, when the wood piece 5 is used in this way,
Not only was it time-consuming to install, remove, and replace the wood piece 5, but the concrete molding surface of the wood piece 5 could not be finished with a good appearance.

Therefore, the present invention provides a hanging metal fitting for a through-hole forming formwork that can easily cope with a change in the depth of the through-hole due to a change in the thickness of the basic concrete without impairing the appearance of the concrete molding surface. Is intended.

[Means for Solving the Problems] In order to achieve the above-mentioned object, in the present invention, it is detachably provided to a form body for forming a through hole such as a ventilation hole in concrete such as basic concrete, In the hanging metal fittings that are hooked on the upper end of the concrete molding template to suspend the formwork body, have a shape that is the same as or larger than the shape of the end of the formwork body side of the formwork body. The gist is to form an auxiliary frame portion having a thickness interposed between the mold body and the mold plate.

[Operation] When the hanging metal fitting of the present invention is used, a formwork is inserted between a pair of concrete forming mold plates arranged to face each other,
The hanging frame is hooked on the upper edge of one of the mold plates to position the mold frame at a predetermined position.

In this case, the sum of the thickness of the auxiliary frame portion of the hanging fitting and the thickness of the form body is the thickness of the basic concrete, that is, the depth of the through hole to be formed.

When the thickness of the basic concrete, that is, the depth of the through hole is changed, the hanging metal fitting is replaced with one having a different thickness of the auxiliary frame portion.

[Embodiment] Hereinafter, a mold for forming a ventilation opening having a hanging fitting according to a first embodiment of the present invention will be described with reference to FIGS.

The main body 11 of the mold of the present embodiment is constituted by a pair of box-shaped frame bodies 11a and 11b made of a synthetic resin and having the same shape, and their bottoms are butted and fixed by screws 12. One of the long sides of the frame bodies 11a and 11b forms a right angle with respect to the bottom surface, and the other of the long sides is oblique so that the opening side is widened. Be assembled so that. A mesh plate 13 is interposed and held between the two frames 11a and 11b with the outer periphery thereof protruding outward.

The hooking member 14 is composed of an auxiliary frame portion 15 and a hooking portion 16. A mounting portion 17 is cut out and bent to be formed in the auxiliary frame portion 15. The mounting portion 17 is fixed to the inner bottom surface of the one frame body 11b by the screw 12, so that the latching member 14 is formed. Installed on.

The auxiliary frame portion 15 has the same shape as the opening of the frame body 11b and is formed in a slightly lower box shape, and several types having different thicknesses are prepared.

The hooking portion 16 is formed by bending from the center of the upper edge of the auxiliary frame portion 15, and the tip portion is bent at a right angle.

In the drawings, 18 is an auxiliary rib integrally formed inside the frame bodies 11a and 11b, and 19 is the frame bodies 11a and 11b.
Metal reinforcing plate fixed to the inner side of the long side of the frame, 20 is the frame 1
Insertion holes for screws 12 formed at the bottoms of 1a and 11b, 2
Reference numeral 1 denotes mutual positioning projections that are engaged with each other through the holes 22 of the mesh plate 13, and reference numeral 23 is a projection that engages with the ends of the holes 22 of the mesh plate 13 to position the mesh plate 13.

Now, in the case of using the ventilation port forming mold configured as described above, as shown in FIG. 1, the entire mold is matched with the interval between the pair of basic concrete molding plates 24. The hanging metal fitting 14 having the auxiliary frame portion 15 having an appropriate thickness is attached to the main body 11 so that the thickness matches the interval between the mold plates 24, and the mold frame is inserted between the mold plates 24. The hanging portion 16 of the hanging metal fitting 14 may be hooked on the upper edge of one of the mold plates 24, and the whole may be hung on the mold plate 24.

In this state, concrete is placed between both mold plates 24, and after hardening of the concrete, both mold plates 24 are removed, and the screws 12 of the frame for forming the ventilation port are removed to remove the respective frame bodies 11a, 1
When 1b is taken out from the ventilation opening formed separately, the mesh plate 13 is buried in concrete on the outer periphery of the ventilation opening, and the ventilation opening in which the mesh plate 13 is installed is completed.

When changing the thickness of the basic concrete, that is, the depth of the ventilation port, the hanging metal fitting 1 having a different thickness of the auxiliary frame portion 15
If it is replaced with 4, the depth of the ventilation port can be changed.

In this way, the hanging metal fitting 14 with the untightening of the screw 12
You can freely handle different depth changes by exchanging, and there is no need to prepare multiple types of formwork with different thickness,
Moreover, the concrete forming surface of the through hole can be finished with a good appearance.

Next, the hanging metal fitting of the second embodiment will be described with reference to FIGS.

Unlike the hanging fitting 14 of the first embodiment, the hanging fitting 25 of the second embodiment is configured such that the auxiliary frame portion 26 and the hooking portion 27 are welded to each other. A mounting plate 28 is welded to the auxiliary frame portion 26.

A pair of left and right screws 29 that can be screwed in and out in the vertical direction are provided on the bent front end portion 27a of the hooking portion 27, and they are hooked to the upper edge of the basic concrete molding template during use. In this case, the tips of the pair of screws 29 come into contact with the template to support the entire template.

Therefore, in the suspending metal fitting of the second embodiment, the vertical position of the form with respect to the basic concrete forming template is adjusted by screwing or unscrewing the screw 29 to adjust the vertical position. You can

The left side surface of each hanging fitting of the first and second embodiments has a symmetrical shape with each right side surface.

[Effects of the Invention] As described in detail above, by using the hanging metal fitting of the present invention,
It exhibits an excellent effect that it can easily cope with changes in the thickness of the basic concrete, that is, the depth of the through holes.

[Brief description of drawings]

FIG. 1 is a sectional view showing a usage state of a formwork having a hanging fitting according to a first embodiment of the present invention, FIG. 2 is a perspective view of the formwork, FIG. 3 is an exploded perspective view of the formwork, FIG. 4 is a front view of the hanging fitting of the first embodiment, FIG. 5 is a rear view of the same, FIG. 6 is a right side view of the same, FIG. 7 is a plan view of the same, and FIG. 8 is a bottom view of the same. FIG. 9 is a front view of the hanging fitting of the second embodiment, FIG. 10 is a rear view of the same, FIG. 11 is a right side view of the same, FIG. 12 is a plan view of the same, and FIG. 13 is a bottom view of the same. FIG. 14 is a cross-sectional view showing a usage state of a conventional mold. Form body 11, hanging fittings 14, 25, auxiliary frame portion 15,
26, template 24.

Claims (1)

[Scope of utility model registration request] 1. A concrete molding template (2) which is detachably provided to a mold body (11) for forming a through hole such as a ventilation hole in concrete such as basic concrete.
4) A hanging metal fitting for hanging on the upper end of the mold body (11) to have the same size as the end shape of the mold body (11) on the mold plate (24) side or A through-hole forming mold which has a larger shape and is formed with auxiliary frame portions (15, 26) having a thickness interposed between the mold body (11) and the mold plate (24). Hanging metal fittings.