JPH0364662B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a block for formwork that is assembled for pouring concrete, and particularly to a cleaning port block placed between a foundation and the formwork block. It is.

Prior Art Such a cleaning port block is interposed between a foundation built into the ground and formwork blocks stacked on the foundation. The cleaning opening block has an opening window on the side surface, through which the debris of joint mortar inserted between the formwork blocks can be removed when stacking the formwork blocks.
Alternatively, this opening window can also be used as an opening for connecting reinforcing bars protruding from the foundation and reinforcing bars placed within the formwork block.

Such a cleaning port block is manufactured by, for example, the Japanese Patent Publication No. 55-
This is conventionally known as shown in Japanese Patent No. 45691. In such a cleaning port block, it is necessary to cover the opening window with a plate or the like in order to prevent the concrete placed in the formwork from protruding through the opening window. In the past, this window was blocked by using an appropriate board, but the work was cumbersome, as the board would collapse under the pressure of the poured concrete, or a support member would have to be provided to prevent it from collapsing. It had some flaws. In addition, as shown in Utility Model Publication No. 55-10495,
There is a cover plate for closing the opening that is attached using bolts and nuts that protrude from the block, but in this case, the bolts must be embedded in advance and it is difficult to install and remove them. It also has the disadvantage of being troublesome.

OBJECT OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks of the conventional art, and provides for easy installation and removal of a cover plate for blocking the opening window, and a cleaning port that does not come off due to the pressure of concrete. Its purpose is to provide a structure for blocks.

Structure of the Invention In order to achieve such an object, the present invention has the following features:
In a cleaning opening block that is placed between a concrete foundation and a formwork block and has an opening on one of its inner and outer side walls, a part or all of the side wall is opened from the outer wall of another formwork block. It is characterized in that it protrudes outward, and that a gap is formed in this protrusion for insertion of a cover plate that closes the opening window.

Embodiment Hereinafter, the structure of the present invention will be explained based on the illustrated embodiment. FIG. 1 shows the overall structure of a cleaning port block 1 of the present invention.
is formed into a generally rectangular shape by inner and outer side walls 2, 3 and connecting parts 4, 4 that connect the ends of both side walls 2, 3. The connecting parts 4, 4 are formed with recesses 5, 5 through which the poured concrete goes around to the side of other cleaning opening blocks 1 stacked adjacent to each other. On the other hand, one side wall portion 2 has its central portion cut off to form an opening window 6.

FIG. 2 shows the state in which the cleaning port block 1 and other formwork blocks 7 are piled up, and the cleaning port blocks 1, 1... are stacked on a foundation 8 built on the ground, and the cleaning port blocks Formwork blocks 7, 7, . . . are stacked one after another on the upper surface of the mold.
Reference numeral 9 indicates reinforcing bars protruding upward from the foundation 8, and 10 indicates longitudinal reinforcing bars inserted from above into the formwork blocks 7, 7. Both reinforcing bars 9, 10 are inserted through the opening window 6. Concatenated.

The cleaning port block 1 has a connecting portion 4 larger in width than the inner and outer widths of the formwork block 7, and a side wall portion 2 on the side of the opening window 6 protrudes outward from the formwork block 7, and the inner surface of the side wall portion 2 A gap 11 is provided between the mold block 7 and the outside surface of the formwork block 7. 12 is a cover plate consisting of a plate-shaped cover plate main body 13 and a horizontal portion 14 protruding outward from the upper end of the cover plate main body 13,
This cover plate 12 is inserted into the gap 11 from the lower end of the main body 13 to close the opening window 6, and the horizontal portion 14 is placed on the upper end surface of the side wall 2 to suspend the main body 13. In this way, the opening window 6 is closed.
Therefore, this cover plate 12 can be attached by simply inserting it into the gap 11, and can be removed by simply pulling it out, and can be reused repeatedly.

In this embodiment, the cover plate 12 suspends and supports the main body 13 by the horizontal part 14, but this may be done by other means, and the cover plate 12 is attached to the lower end of the side wall 2. Other means may also be used, such as forming a protrusion to support the lower end of the holder. Although the cleaning port block 1 is also a type of formwork block 7, such a name is used in this specification to distinguish it from other formwork blocks 7.

Effects As described above, according to the present invention, the opening window can be closed by simply inserting the cover plate into the gap, and can be easily removed by simply pulling it out, making it easy to install and remove. Since such a cover plate is reliably supported by the side walls forming the gap, it will not come off due to the pressure of the poured concrete and can be held securely without the use of special support members. effective.

[Brief explanation of drawings]

FIG. 1 is an overall perspective view of the cleaning port block of the present invention;
FIG. 2 is a partially vertical perspective view of the stacked state. 1...Cleaning port block, 2...Side wall part, 6...
Opening window, 7...Formwork block, 11...Gap, 1
2...Lid plate.

Claims (1)

[Claims] 1. In a cleaning opening block that is placed between a concrete foundation and a formwork block and has an opening window on one of its inner and outer side walls, part or all of the side wall is connected to the outer wall surface of another formwork block. A cleaning port block that projects further outward and has a gap formed in the projecting portion for insertion of a cover plate that closes the opening window.