JP4037201B2 - Concrete block formwork - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a mold for molding a concrete block for obtaining a covering thickness dimension of a reinforcing bar arranged inside a foundation such as a general house, particularly a concrete foundation.
[0002]
[Prior art]
Conventionally, a concrete block that is formed in a dice-like cube shape in advance is used as a concrete block for obtaining a covering thickness of a reinforcing bar arranged inside a concrete foundation such as a general house.
[0003]
As shown in FIG. 10, the concrete block 13 is interposed between the earthwork top end 10 and the lower end reinforcing bar 12, thereby adjusting the covering thickness of the lower end reinforcing bar 12, and the covering thickness dimension of the lower end reinforcing bar 12. P is set to a predetermined thickness. A concrete foundation is formed by placing ready-mixed concrete in the concrete foundation form 11 in which the lower end reinforcing bars 12 and the like arranged in this manner are installed.
[0004]
On the other hand, since the covering thickness dimension of the reinforcing bars such as the bottom reinforcing bars 12 varies depending on the installation situation of the geotechnical top end 10 and the concrete foundation formwork 11 at the construction site, the concrete blocks 13 having different sizes and heights can be used. The kind must be prepared, and the concrete block formwork for producing such a concrete block 13 is also required in the quantity of the kind. However, it is not possible to prepare many types from the viewpoint of cost. Therefore, the ones with the smallest unit size are stacked and used, or when necessary, the various types are used without considering the cost. It was.
[0005]
Moreover, surplus ready-mixed concrete and ready-to-use mortar used at the construction site had to be treated as industrial waste, which was costly.
[0006]
[Problems to be solved by the invention]
The present invention has been made in view of the above problems, and uses a concrete block formwork that can form concrete blocks having a plurality of types of dimensions with a single formwork. It is an object of the present invention to provide a reduction in cost by easily molding a concrete block having a required size by using it.
[0007]
[Means for Solving the Problems]
The concrete block formwork of the invention of claim 1 is interposed between the lower end reinforcing bar arranged in the concrete foundation and the top of the earthwork, and molding a concrete block for obtaining the covering thickness of the lower end reinforcing bar. A concrete block formwork that has an inner shape that forms a concave shape that spreads from the lower bottom surface toward the upper end opening, and that extends along the inner peripheral surface from the lower bottom surface to a predetermined height according to the covering thickness dimension. The molded concrete block is formed of a container in which a plurality of steps for forming steps are formed in steps .
[0008]
A concrete block mold according to a second aspect of the present invention is characterized in that, in the configuration described in the first aspect, a flange is formed on the periphery of the upper end opening of the container.
[0009]
A concrete block mold according to a third aspect of the invention is characterized in that, in the configuration described in the first or second aspect, the container is made of a synthetic resin.
[0010]
According to a fourth aspect of the present invention, there is provided a concrete block mold according to any one of the first to third aspects, wherein the inner peripheral surface of the container between the steps is tapered.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a concrete block mold according to an embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 3, the concrete block mold 1 according to the embodiment of the present invention has a plurality of steps 3 formed in a step shape at predetermined locations on the inner peripheral surface of the container 2. A flange 5 is formed on the periphery of the upper end opening 4 of the container 2 as necessary. Hereinafter, it demonstrates in detail based on drawing.
[0012]
As shown in FIGS. 1 to 3, the container 2 has a concave shape in which the inside is recessed. The material of the container 2 is preferably a flexible material that is elastically deformed by an external pressing force or tensile force, for example, a synthetic resin.
[0013]
Inside the container 2, as shown in FIG. 2 or 3, the step 3 is stepped along the inner peripheral surface from the lower bottom surface 6 of the container 2 toward the upper end opening 4 side. A plurality of the openings are formed, and the closer to the lower bottom surface 6 of the container 2, the smaller the opening formed in the extended surface of each step. The step 3 is formed at a predetermined height from the lower bottom surface 6 of the container 2 in order to mold a concrete block having a required height. That is, the step 3 is such that the vertical heights L, M, N, and O between the step 3 and the lower bottom surface 6 of the container 2 are the same height as a concrete block having a required height dimension. The inner peripheral surface of the container 2 is formed at a predetermined position. The number of steps 3 is preferably about 3 to 5, but is not particularly limited.
[0014]
As specific examples, the distance L from the lower bottom surface 6 of the container 2 is set to L = 60 mm, M = 75 mm, N = 90 mm, O = 100 mm, and the staircase is provided at each position along the inner peripheral surface of the container body 2. The step 3 is arranged so that a concave portion that spreads from the bottom to the top can be formed.
[0015]
Further, as shown in FIG. 3, the inner peripheral surface of the container between the steps of the step 3 is arranged vertically, but is not necessarily limited to this, and as shown in FIG. The inner peripheral surface of the container between the steps may be inclined toward the outside of the container 2, that is, may be tapered.
[0016]
Tapered portions 7 may be formed at the corners of the step 3 as shown in FIG. The taper 7 part is formed so that the concrete block mold 1 and the concrete block molded by the concrete block mold 1 can be easily detached.
[0017]
Further, as shown in FIG. 5, a release agent 8 may be applied to the inner peripheral surface of the container 2. The release agent 8 can be easily detached without damaging both the concrete block mold 1 and the concrete block molded with the concrete block mold 1. Specific examples include silicone resin, fluorine Resin or paraffin may be used.
[0018]
The flange 5 is formed so as to protrude in the outward direction of the container 2 along the periphery of the upper end opening 4 of the container 2 as necessary. The hook 5 is used as a handle when carrying the concrete block formwork 1 or when the concrete block is taken out by grasping the hook 5 and pulling it outward or pressing it inward. It is used to facilitate desorption.
[0019]
Inside the concrete block form 1 configured as described above, the raw concrete surplus at the construction site is put into a bucket or the like, and the height equivalent to that of the concrete block having the required height from the upper end opening 4 is provided. Pour to the vertical height L, M, N, or O of the step 3 and have the top edge leveled with a trowel or the like while thrusting with a screwdriver or a metal bar.
[0020]
Next, the concrete block formed by solidifying this ready-mixed concrete is detached from the concrete block mold 1. As described above, this attachment / detachment can be easily performed by gripping the flange 5 and pulling it outward or pressing it inward, whereby the container 2 is elastically deformed. Further, when the inner peripheral surface of the container between the steps of the step 3 is tapered, the inner shape of the container 2 becomes a concave shape that spreads from the lower bottom surface 6 toward the upper end opening 4. Therefore, the container 2 can be easily detached and attached by elastic deformation, and the concrete block mold 1 and the concrete block molded by the concrete block mold 1 can be prevented from being damaged.
[0021]
The concrete block detached from the concrete block mold 1 becomes a concrete block 9 having four kinds of necessary height dimensions as shown in FIGS. 6 to 9 due to the step 3 formed at a predetermined position.
[0022]
The concrete block 9 molded in this way is turned upside down at the time of use, and is interposed between the geological ceiling 10 and the lower end reinforcing bar 12 arranged inside the concrete foundation form 11, so that the The covering thickness of the lower end reinforcing bar 12 becomes L, M, N, or O, and can be adjusted to a predetermined thickness.
[0023]
As described above, the concrete block mold 1 can easily form four types of concrete blocks 9 having a height of L, M, N, or O. However, the present invention is not limited to this, and concrete blocks 9 having a plurality of types of predetermined height dimensions can be molded. Moreover, since the said concrete block 9 is shape | molded using the waste material of the ready-mixed concrete which became surplus at the construction site, cost reduction can be aimed at. Furthermore, the concrete block 9 is in contact with the geological top end 10 by turning the concrete block 9 upside down at the time of use and installing the concrete block 9 between the top end 10 and the bottom reinforcing bar 12. 9 is larger than the contact area of the concrete block 9 that is in contact with the lower end reinforcing bar 12, so that the lower end reinforcing bar 12 can be stably placed on the concrete block 9, and the lower end reinforcing bar Twelve covering thickness dimensions can be accurately obtained. In addition, since each of the concrete blocks 9 having a predetermined height has a different shape, it is possible to easily check the covering thickness dimension only by looking at the installed concrete block 9.
[0024]
In this embodiment, the ready-mixed concrete is poured into the concrete block mold 1 and the concrete block is molded. However, the present invention is not limited to this, and cement, leveler material, mortar, and the like are used for the concrete block. It goes without saying that cement blocks, leveler blocks, mortar blocks and the like may be molded by pouring into the mold 1.
[0025]
【The invention's effect】
According to the concrete block form according to claim 1 of the present invention, a concrete block having a plurality of types of height dimensions can be integrally formed, whereby a concrete block having a necessary height dimension can be manufactured. It is possible to accurately measure the covering thickness of the reinforcing bars by interposing the concrete block between the reinforcing bars arranged in the earthwork ceiling and the concrete foundation form. Therefore, since it is not necessary to purchase a commercially available expensive concrete block, cost reduction can be achieved. In addition, since this concrete block is used upside down, the contact area of the concrete block that is in contact with the top edge of the ground is larger than the contact area of the concrete block that is in contact with the lower end rebar, so it is stable. The lower end reinforcing bar can be placed on the concrete block. Moreover, by using waste materials such as ready-mixed concrete surplus at the construction site, not only costs are reduced, but also industrial waste is reduced, which has a positive impact on the environment. Furthermore, since each of the concrete blocks formed by the concrete block form has a different shape, it is possible to easily check the covering thickness dimension by just looking at the shape of the concrete block installed in the concrete foundation form. Can do.
[0026]
According to the concrete block mold according to claim 2 of the present invention, in addition to the above-described effect of the concrete block mold according to claim 1 of the present invention, the flange is formed at the periphery of the upper end opening. By pressing or pulling the collar part, the concrete formwork and the concrete block molded by the concrete formwork can be easily detached, and if the handle part is the handle Easy to carry.
[0027]
According to the concrete block form according to claim 3 of the present invention, in addition to the effect of the concrete block form according to claim 1 or 2 of the present invention described above, a synthetic resin in which the material of the container is excellent in flexibility. Therefore, when the container is easily elastically deformed, the concrete mold and the concrete block molded by the concrete mold can be easily detached.
[0028]
According to the concrete block mold according to claim 4 of the present invention, in addition to the effects of the concrete block mold according to claims 1 to 3 of the present invention described above, the inner peripheral surface of the container between the steps is tapered. Therefore, not only can the detachment of the concrete formwork and the concrete block molded by the concrete formwork be performed more easily, but also breakage of both can be prevented.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a schematic configuration of a concrete block formwork.
FIG. 2 is a plan view of FIG.
3 is a cross-sectional view taken along line AA in FIG.
FIG. 4 is a cross-sectional view when a concrete block mold is formed by tapering the inner peripheral surface of a container between steps.
FIG. 5 is a cross-sectional view showing a schematic configuration when a release agent is applied to the inner peripheral surface of a concrete block mold.
FIG. 6 is a perspective view showing a schematic configuration of a concrete block molded by a concrete block mold.
FIG. 7 is a perspective view showing a schematic configuration of a concrete block molded by a concrete block mold.
FIG. 8 is a perspective view showing a schematic configuration of a concrete block molded by a concrete block mold.
FIG. 9 is a perspective view showing a schematic configuration of a concrete block molded by a concrete block mold.
FIG. 10 is a cross-sectional view when a conventional concrete block is interposed between the earthwork top and the bottom reinforcing bar.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Concrete block form 2 Container 3 Level | step difference 4 Upper end opening part 5 Eaves part 6 Lower bottom face 9 Concrete block

Claims (4)

A concrete block formwork that is interposed between a bottom reinforcing bar arranged inside a concrete foundation and the top of the earthwork, and molds a concrete block for obtaining a covering thickness of the bottom reinforcing bar,
The inner shape forms a concave shape that spreads from the bottom surface toward the top opening, and along the inner peripheral surface to a predetermined height from the bottom surface , a step in the concrete block after molding according to the covering thickness dimension A concrete block formwork comprising a container formed with a plurality of steps for forming a step.   The concrete block mold according to claim 1, wherein a flange is formed on the periphery of the upper end opening of the container.   The concrete block formwork according to claim 1 or 2, wherein the container is made of a synthetic resin.   The concrete block formwork according to any one of claims 1 to 3, wherein an inner peripheral surface of the container between the steps is tapered.

Images