JPH09111772A - Separator of mold - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform attaching and detaching by simple operation by equipping a receiving member having a hole opened inward of both molds and a connecting rod having a part locked to the receiving member. SOLUTION: The edge part 11a of a connecting rod 11 is widened outward, a half-cut V-shaped cut line 11b is provided in the center, and an interval between right and left flanges 12, 12 is matched to that between a pair of molds 6, 6 which are set. When the end part of the connecting rod 11 is inserted in a hole 10 of the receiving member 9 of the mold 6, the edge part 11a is advanced in the hole 10 as resilient deformation is performed so as to be reduced by guide of the inclined face 9e of the hole 10. Next, the edge part 11a climbs over a projection part 9d, leads to a widened inclined face 9c, widening is performed by resiliency, and the inclined face 9c and the edge part 11a form a locking part. Therefore, a separator can be simply attached or detached by one touch.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a formwork separator, that is, a pair of formwork for concrete placing, which is used when placing a foundation or a wall of a building with concrete, at regular intervals. Regarding the separator to hold.

[0002]

2. Description of the Related Art A typical method of constructing a conventional cloth foundation with a concrete footing is disclosed in, for example, JP-A-6-3.
It is described in Japanese Patent No. 30531.

According to this construction method, a support tool is arranged at an appropriate place in a root cutting groove excavated in the ground, and a pair of parallel molds made of foamed synthetic resin are attached to the bottom of the root cutting groove by the support tool. It can be held at a required height, and concrete can be cast between both molds, and the footing portion and the cloth foundation portion can be simultaneously molded by only one casting of concrete. The mold made of expanded synthetic resin is left as a heat insulating material.

[0004]

In such a construction method, the pair of molds are held parallel to each other by the separator. The separator is usually attached to the frame by bolting, but this attachment is troublesome. Therefore, it has been proposed to connect a pair of molds in parallel with each other in advance by a connecting member. However, in this case, the bar arrangement of the cloth foundation is troublesome and time-consuming.

The object of the present invention is to install in a simple operation,
It is to provide a removable separator for a mold.

[0006]

According to the present invention, the above-mentioned problem is solved as follows. (1) A separator for holding a pair of formwork for concrete placement in parallel to each other, which is inserted into the formwork and contacts the outer surface of the formwork at an end portion of the formwork near the outer surface Or a receiving member having a flange embedded in the mold and having a hole opening toward the inner side of both molds at the end near the inner surface of the mold, and the inside of the hole of this receiving member. And a connecting rod having an outer diameter to be inserted into the receiving member and having an engaging portion to be engaged with the receiving member.

(2) In the above item (1), a flange is formed on the connecting rod at a position in contact with the inner surface of the mold.

(3) In the above item (1) or (2), an outwardly extending slope is formed at the edge of the hole opening at the flange side end of the receiving member, and the end of the connecting rod is slightly expanded. And make a radial cut at the same end.

(4) In any one of the above items (1) to (3), an outwardly extending slope is provided at the opening edge of the hole at the end of the receiving member on the inner surface of the mold.

(5) In any one of the above items (1) to (4), the tip of the connecting rod is tapered.

(6) In the above item (1) or (2), between the hole of the receiving member and the end of the connecting rod inserted into the hole, a protruding portion provided on one side of the hole is provided. A bayonet mechanism is provided on the other side, the bayonet mechanism including an L-shaped notch that engages with the protruding portion.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a vertical sectional front view of a footing-attached cloth foundation in which a formwork is assembled using the separator of the present invention, immediately before placing concrete. The outline of the assembling of the formwork will be described together with the procedure.

First, a root cutting groove (2) is excavated in the ground (1) in the front-back direction of the drawing. Waste concrete (3) is cast on the bottom of the root cutting groove (2), and plate-shaped molds (4) are erected on both side edges of the root cutting groove (2).

A plurality of support members (5) are placed on the center line of the upper surface of the waste concrete (3) at appropriate front and rear intervals and fixed by bolts (not shown).

A pair of left and right molds (6) and (6) made of foamed synthetic resin are placed on a supporting portion (5a) having upward edges formed on the upper and left sides of the support tool (5). This pair of formwork (6)
(6) are connected by the separator (7) of the present invention. This connection may be performed after mounting on the support portion (5a) or before mounting.

Next, reinforcing bars for footing foundation and cloth foundation
Place (8) and fix, and finally, fresh concrete 1
The footing foundation and the cloth foundation are cast at the same time by pouring from between the pair of formwork (6) (6).

A pair of left and right foam molds made of synthetic resin.
(6) Separators that hold the gap between (6) constant and fix them are conventionally formed by bolting each form (6).
It was attached to. However, the number of separators was large, and this bolt tightening operation was troublesome.

The separator (7) of the present invention enables this work by a one-touch operation.

According to the first embodiment of the invention shown in FIG. 2, the separator (7) comprises a receiving member (9) installed through the form (6) and the receiving member (9). Connection rod to be fitted
(11).

The receiving member (9) is, for example, a molded product or a metal product of a hard synthetic resin material, and has a cylindrical portion (9a) having a hole (10) and a flange (9b) formed at one end thereof. ) And have. The inner surface of the flange (9b) is formed with a conical slope (9c) that spreads outward, that is, opens outward, and the inside thereof is a protrusion (9d) slightly protruding inward.
On the inner surface of the hole (10) at the end opposite to the flange (9b) of the cylindrical portion (9a), an inclined surface (9e) is formed which is inclined outward.

This receiving member (9) is inserted into the hole formed in the mold (6) with the flange (9b) facing outside, or
Attached to the mold during foam molding of the mold (6),
It is buried integrally in. In this embedding, not only is the flange (9b) set so as to contact the outer surface of the form (6) as shown in the drawing, but also the flange (9b) is embedded and attached inside the form (6). It can also be set.

The connecting rod (11) is, for example, a pipe-shaped molded product or a metal product made of a hard synthetic resin material, and is located inward at a distance of the thickness of the mold (6) from both ends. The flange (12) is integrally formed. The distal end portion (11a) of the connecting rod (11) is expanded outward and has a radial cut (11b) such as a half-break V-shaped cut or X-shaped cut in the center. . Left and right flange (12) (1
The space between 2) is set according to the space between the pair of molds 6, 6.

As shown by the arrow on the left side of FIG. 2, the end portion of such a connecting rod (11) is provided with a hole (1) of the receiving member (9) of the form (6).
Insert it in 0). Outer end of connecting rod (11) (11a)
Enters into the hole (10) while being elastically deformed by the guide of the slope (9e) of the hole (10) so as to reduce the diameter. The diameter reduction due to this elastic deformation is possible due to the presence of the cut (11b).

The tip (11a) gets over the protrusion (9d),
Reaching the outer slope (9c), it expands due to elasticity. Thus, the sloped surface (9c) and the tip portion (11a) form a locking portion. The flange (12) of the connecting rod (11) abuts the inner surface of the form (6). This state is shown on the right side of the drawing.

As shown by an imaginary line in FIG. 2, a collar portion (12a) for locating the lateral streaks may be provided at an appropriate position in the middle portion of the connecting rod (11).

In the modification of the connecting rod (11) shown in FIG. 3, a tapered slope (11c) is formed at the end, in addition to the outwardly extending tip (11a). The connecting rod (11) inserted is on this slope
The receiving member (9) can be easily obtained by pinching (11c) from the outside with a tool to reduce the diameter or pulling with a strong force.
Can be extracted from

In the second embodiment shown in FIG. 4, the cylindrical portion (9a)
The receiving member (9) having the flange (9b) and the flange (9b) is
Inside, there is a partial protruding portion (13) protruding inward of the fan-shaped cross section reaching the axis. Correspondingly, the flange (12)
The connecting rod (11) with a mark is made of a bar material, and from its end portion, a notch portion (1
4) is formed.

A side cutout portion (15) is formed on the side of the base of the cutout portion (14) over a length corresponding to the axial length of the protruding portion (13). . A bayonet mechanism is formed by the protruding portion (13), the cutout portion (14) and the side cutout portion (15). The bayonet mechanism may have another known structure, and the one corresponding to the protruding portion (13) may be a connecting rod.
A member for receiving an L-shaped notch provided on the outer periphery of (11) and corresponding to the notch (14) and the side notch (15).
It may be provided on the inner surface of the hole (10) of (9).

Therefore, as shown by the arrow in FIG. 4, first, the protruding portion (13) is aligned with the notch portion (14),
When the connecting rod (11) is inserted into the hole (10) of the receiving member (9) and then the protruding portion (13) is aligned with the side cutout portion (15),
When the connecting rod (11) is rotated counterclockwise, the protruding portion (13)
Is fitted into the side cutout portion (15), and the connecting rod (11) is fixed to the receiving member (9).

[0030]

According to the present invention, the separator can be easily attached in a one-touch type by inserting the connecting rod into the receiving member of the mold.

According to the second aspect of the present invention, when the flange is formed on the connecting rod at the position in contact with the inner surface of the mold, the separator can hold the mold from both sides thereof.

According to a third aspect of the present invention, an outwardly extending slope is formed at the edge of the hole that opens at the flange-side end of the receiving member, and the end of the connecting rod is slightly expanded in diameter. When a radial cut is made at the same end, the diameter of the end of the connecting rod is temporarily reduced by the elastic obedience due to the existence of the radial cut, and the connecting rod is automatically expanded to reach the outer slope and the connecting rod is automatically expanded. Can be locked.

According to the fourth aspect of the present invention, if an outwardly sloping slope is provided at the opening edge of the hole at the end of the inner surface of the mold of the receiving member, the tip end of this slope is the insertion of the connecting rod. It is guided by and is automatically closed and inserted into the hole.

When the tip of the connecting rod is tapered as in the fifth aspect of the invention, the connecting rod can be easily pulled out from the receiving member by pinching this portion.

According to a sixth aspect of the present invention, between the hole of the receiving member and the end portion of the connecting rod inserted into the hole, the protruding portion protruding on one side and the cutting portion on the other side are provided. When the bayonet mechanism including the L-shaped cutout that engages with the protruding portion is provided, the connecting rod can be reliably fixed to the receiving member by inserting and rotating the connecting rod.

[Brief description of the drawings]

FIG. 1 is a vertical cross-sectional front view showing a state immediately before placing a footing and a cloth foundation on concrete by a formwork assembled using the separator of the present invention.

FIG. 2 is an enlarged vertical sectional front view of the mold and the separator for explaining the first embodiment of the separator of the present invention.

FIG. 3 is a partial front view of a modified example of the separator of the present invention.

FIG. 4 is a perspective view of a second embodiment of the separator of the present invention.

[Explanation of symbols]

 (1) Ground (2) Root cut groove (3) Waste concrete (4) Plate formwork (5) Supporting tool (5a) Support part (6) Formwork (7) Separator (8) Reinforcing bar (9) Receiver Member (9a) Cylindrical part (9b) Flange (9c) Outer slope (9d) Projection (9e) Slope (10) Hole (11) Connecting rod (11a) Tip (11b) Cut (11c) Tapered slope (12) Flange (12a) Collar (13) Projection (14) Cutout (15) Side cutout

Claims (6)

[Claims] 1. A separator for holding a pair of formwork for concrete pouring parallel to each other, the separator being inserted into the formwork and having an outer surface of the formwork at an end near the outer surface of the formwork. A receiving member that has a flange that is in contact with or is embedded in the mold, and that has a hole that opens inwardly of both molds at the end near the inner surface of the mold; And a connecting rod having an outer diameter to be inserted into the hole and having an engaging portion to be engaged with the receiving member. 2. The mold separator according to claim 1, wherein a flange is formed on the connecting rod at a position in contact with the inner surface of the mold. 3. A sloping surface that expands outward is formed at the edge of the hole that opens at the flange-side end of the receiving member, the end of the connecting rod is slightly expanded, and a radial cut is made at the end. The mold separator of claim 1 or 2, wherein the mold separator is included. 4. The separator of the mold according to claim 1, wherein the opening edge portion of the hole at the end of the receiving member on the inner surface of the mold has an outwardly extending slope. 5. The mold frame separator according to claim 1, wherein a tip of the connecting rod is tapered. 6. A projecting portion projecting from one of the hole of the receiving member and the end of the connecting rod inserted into the hole,
The mold separator according to claim 1 or 2, further comprising a bayonet mechanism that is formed on the other side and has an L-shaped notch that engages with the protruding portion.