JPH0633120Y2 - Molds such as ventilation openings - Google Patents

Description

[Detailed description of the device] [Industrial applications]

The present invention is designed to be held between cloth foundation concrete formwork that is installed in parallel when constructing a cloth foundation, etc. The present invention relates to a molding form such as a ventilation hole such as a through hole for forming only a chisel.

[Prior art]

Molding forms such as ventilation openings that can hold ventilation holes nets and provide ventilation openings in part of the cloth foundation until the cloth foundation concrete solidifies
No. and Jitsukō Sho 53-4657, a pair of ventilation holes that can hold a ventilation hole net in the middle, and the ventilation holes move or drop from a predetermined position when pouring concrete. It consists of a hanging bracket to prevent Conventionally, for example, in the above-mentioned No. 52-10927, the hanging metal fitting is attached to the ventilation port forming formwork, and the upper end of the hanging metal fitting is the horizontal part and is attached to the upper edge of the cloth foundation concrete formwork. It had a structure in which it was stopped and fixed with a clamping screw. Further, in Japanese Utility Model Publication No. 53-4657, a fixing member insertion hole is provided in the upper horizontal part of the hanging metal fitting, and the fixing member whose base part is bent into a substantially V shape is inserted into this insertion hole, and In this structure, a locking step portion is provided on the inclined portion, and the locking step portion is locked to the reinforcing rib of the cloth foundation concrete mold to hold the forming mold.

[Problems to be solved by the device]

These conventional structures, in which molded forms such as ventilation openings are held between the left and right cloth foundation concrete forms that are assembled with a predetermined gap, are provided by the separate fixing metal fittings found in, for example, Japanese Utility Model Publication No. 52-10927. In the case of screwing, there is a difficulty that it takes time. In addition, in the case of the type that uses a fixing member whose base part is bent in a substantially V shape as seen in Jitsuko Sho 53-4657, etc., since the cloth foundation concrete formwork is inserted from the front, the hanging metal fittings main body is removed from the concrete formwork. Since they are trying to separate from each other and because the installation position of the ventilation port is decided, they cannot be fixed if they hit the crosspiece of the cloth foundation concrete formwork, in which case there is a difficulty that a separate fixing member must be provided. . Further, most of the conventional structures have drawbacks such as being floated by concrete pressure and being easily moved.

[Means for Solving the Problems]

As a result of various investigations to solve the above-mentioned difficulties in the molding form such as the ventilation port, a pair of ventilation frame (1a) (1b) sandwiching the ventilation hole net (2) between them is placed on top of the cloth foundation. The ventilation hole net (2) is embedded in the foundation concrete by being held between the cloth foundation concrete forms by an L-shaped hanging metal fitting having a flat portion that engages with the upper edge of the concrete form, and the ventilation is performed. In a molding form such as a ventilation port forming a mouth, in a state in which the hanging metal fitting is closely locked to the engaging flat portion of the hanging metal fitting of the ventilation opening frame, the cloth base concrete Locking claw that can lock the lower edge of the upper edge of the form
A molding frame for a ventilation port or the like is characterized in that (3) is pivotally attached. Furthermore, we have developed a molding frame such as a structural ventilation port provided with a locking claw (3) that is movable in the axial direction of the rotating shaft (11). In addition to the locking claws (3) having such characteristics, a structure in which a pin (5) is provided on one of the mating surfaces of the pair of ventilation port frames (1a), (1b) and a pin hole (6) is provided on the other By solving the above, the problems that the conventional products had were solved.

[Action]

With such a structure, when the ventilation frame is held at the position where the ventilation port needs to be provided in the concrete formwork,
The locking claw (3) provided above the ventilation frame can be firmly and reliably locked to the upper edge of the cloth foundation concrete form by rotating it. Since the rotation direction of the locking claw is the method of pressing the hanging metal fitting to the panel surface,
There is no movement of the mold by closely fixing both. In addition, if the locking claws are movable in the axial direction, even if there is a protrusion or the like that cannot lock the vertical crosspieces or other locking claws on the concrete form,
Only the locking claw (3) can be moved in the axial direction so that it can be fixed while avoiding a vertical crosspiece or the like. Furthermore, the pin (5) and the pin hole (6) provided on each of the mating surfaces of the ventilation port frames (1a) and (1b) are used to position the opposing ventilation port frames (1a) and (1b) and to prevent misalignment. Bring about action.

【Example】

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view before assembling of a ventilation port molding form according to an embodiment of the present invention, and FIG. 2 is a sectional view showing a state in which the form is used between concrete forms. As can be seen from these figures, the ventilation mold has a ventilation net (2) between a pair of opposing ventilation frames (1a) (1b).
It has the function of holding and burying it in the foundation concrete and forming a ventilation port. The pair of ventilation port frames (1a) (1b) are each formed into a box shape by steel plate processing, and the mating surfaces (7a) (7b) in which the middle part is flat and a large number of uneven beads in the horizontal direction are provided vertically have. The uneven bead portion sandwiches the upper and lower parts of the ventilation hole net to prevent the ventilation hole net (2) from shifting. Further, between the mating surfaces (7a) and (7b), screw holes (9) for fixing a pair of ventilation port frames (1a) (1b) holding a ventilation hole net (2) between them are screwed (9). In addition, one of the mating surfaces has a pin (5) and the other has a pin hole (6). Therefore, by inserting one pin (5) of the mating surfaces (7a) (7b) into the other pin hole (6),
The pair of ventilation port frames (1a) and (1b) can be positioned, and a displacement preventing effect can be obtained. On one side of the ventilation port frame (1a) (1b), a hanging metal fitting (10) having a flat part above is provided integrally by welding etc. or detachably with a screw nut etc. The shaft (11) is retained. This shaft (11) is longer than the distance between the bearings at the upper end of the hanging metal fitting that holds it. Therefore, the locking claw (3) pivotally supported by this shaft (11) can be locked to the upper edge of the cloth foundation concrete formwork by rotating it, and can be moved in the axial direction. Is. In this example, the two locking claws (3) are integrated, but there may be more locking claws (3) or they may be provided separately. In addition, on the ventilation port frame, shift the position to the mating surface and
3) is provided in one or several places. This window is used to remove by knocking with a hammer when dismantling the ventilation frame. A pair of ventilation frame (1a) (1b) holding the ventilation net (2)
Is a concrete formwork (12a), as shown in Figure 2.
(12b) When holding the ventilation hole in the position where it needs to be installed, simply rotate the locking claw (3) provided above the ventilation frame to the upper edge of the cloth foundation concrete formwork. Can be locked to. After waiting for the concrete to solidify in this state, remove the locking claw (3) as shown by the chain double-dashed line in Fig. 2, remove the concrete formwork (12a) (12b), and then screw (8) When the mold is removed, the mold of the present invention is disassembled and a ventilation hole is provided in the cloth foundation concrete.
The ventilation net is installed in the middle of the cloth foundation concrete. The forming mold of the present invention can also be used when only the through holes are formed inside the cloth foundation.

[Effect of device]

Since the molded formwork such as the ventilation hole of the present invention has the above-mentioned structure, it can be attached to the concrete formwork by a simple operation, and the ventilation hole can be accurately provided in the necessary place of the foundation concrete. .

[Brief description of drawings]

FIG. 1 is a perspective view before assembling of a ventilation port molding form according to an embodiment of the present invention, and FIG. 2 is a sectional view showing a state in which the form is used between concrete forms. (1a) (1b) …… Ventilation port frame, (2) …… Ventilation hole net (3) …… Locking claw, (4) …… Convex bead (5) …… Pin, (6) …… Pin hole (7a) (7b) …… Mating surface, (8) …… Screw (9) …… Screw hole, (10) …… Suspension bracket (11) …… Shaft, (12a) (12b) …… Concrete mold Frame (13) …… window

Claims (3)

[Scope of utility model registration request] 1. A pair of ventilation frame (1a) (1b) sandwiching a ventilation hole net (2) between them, which has an L-shaped structure having a flat portion for engaging with an upper edge of a cloth foundation concrete formwork at an upper part thereof. It is held between cloth foundation concrete formwork by hanging metal fittings, and the ventilation hole net
(2) is embedded in the foundation concrete and forms a ventilation opening.In a molding form such as a ventilation opening, the hanging fitting is attached to the engaging flat part of the hanging fitting of the ventilation opening frame. In a state where it is tightly locked to the frame, a locking claw (3) capable of pivotally locking to the lower bent part of the upper edge of the cloth foundation concrete formwork is axially attached Molding form. 2. A molding frame for a ventilation port or the like, in which the locking claw (3) according to claim 1 is movably supported in the axial direction of the rotary shaft (11). 3. The pin (5) is provided on one of the mating surfaces of the pair of ventilation port frames (1a) (1b), and the pin hole (6) is provided on the other of the mating faces, according to claim 1 or claim 2. Molded form such as the described ventilation port.