JPH0676732B2 - Fixing device for concrete buried body - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a fixing device for a concrete embedded body which presses an embedded body such as a wiring box embedded in a concrete wall tightly against a concrete formwork. Is.

(Prior Art) Conventionally, as shown in FIG. 10, an embedded body (B) such as a wiring box that is to be embedded in a concrete wall is formed into a form (8).
In order to fix it closely to 0), generally the bolt (90) is used to fix the embedded body (B) to the form (80), or two parallel plates (95) are attached to the plate (95) as shown in FIG. The installation tool (97), which is a fixed bar material (96), is attached to the back surface of the embedded body (B), the bar material (96) is bent, and then fastened to the reinforcing bar (81). The space between the embedded body (B) and the form (80) is adjusted by the bending condition of (1).

Moreover, the applicant of the present application has already disclosed in Japanese Utility Model Publication No. 62-26501 (Japanese Patent Application No. 57-3
No. 8457) discloses a fixing device for a concrete buried body which is convenient for fixing the buried body. This concrete embedded body fixing device extends the pantograph by inserting and rotating a screw rod at the top of the pantograph formed in a substantially rhombic shape in the vertical direction so that the embedded body is closely fixed to the formwork. .

(Problems to be Solved by the Invention) However, when fixing the embedded body with the bolts or pantographs, there is a complexity that it is necessary to rotate the bolts and the screw rod to adjust the dimensions to match the intervals of the form. Further, when fixing the embedded body with the bar material, there is a complexity that it is necessary to adjust the dimension by bending the bar material according to the interval between the mold and the embedded body.

Therefore, an object of the present invention is to easily and reliably press the embedded box against the molds and fix them closely without having to adjust the dimensions between the molds regardless of the size of the intervals between the molds. An object of the present invention is to provide a fixing device for a concrete buried body that can be used.

(Means for Solving the Problem) In order to solve the above-mentioned problems, in the fixing device for a concrete buried object according to the invention as set forth in claim 1, a supporting leg portion which is in contact with a form, and the supporting leg portion. A substantially V-shaped leaf spring portion projecting from one to two or more consecutively facing each other, and a support leg portion provided between the tip end portion of the leaf spring portion by expansion and contraction of the leaf spring portion. The embedded body mounting part that reciprocates in the direction is integrally molded with synthetic resin.

Further, in the fixing device for a concrete buried body according to the invention described in claim 2, in addition to the configuration described in claim 1, the leaf spring part is formed by connecting two or more stages, and between the continuous parts. A reinforcing member having an engaging hole is erected,
On the other hand, the embedded body mounting portion or the support leg portion is provided with an engagement rod that engages with the engagement hole and prevents the leaf spring portion from being crushed in the lateral direction when the leaf spring portion is compressed. It is a thing.

Furthermore, in the fixing device for a concrete buried body according to claim 3, in addition to the configuration according to claim 1 or 2,
The embedded body mounting portion includes a holding portion that holds the bar material.

(Operation) According to the above-mentioned structure of claim 1, in order to fix the embedded body to the form using the concrete embedded body fixing device, after mounting the embedded body on the mounting portion, the support leg is provided on one side. Fix it to the formwork with nails. Then, the other formwork is erected on the front surface of the embedded body. At this time, the leaf spring portion contracts in accordance with the distance between the two molds, and the elastic restoring force presses the embedded body against the other mold to fix it closely.

Further, in order to fix the embedded body to the form using the bar material, the bar material and this fixing device are attached to the embedded body, and the embedded body is fixed to the reinforcing bar using the bar material. Then, stand the formwork on both sides of the rebar. At this time, the leaf spring portion expands and contracts according to the interval between the two molds, and the elastic restoring force presses the embedded body closely to the mold.

Further, according to the above-described structure of claim 2, in addition to the function of claim 1, when the embedding device is compressed between the molds, the engaging rod engages with the engaging hole of the reinforcing member. To do. Therefore, even if a lateral force is applied to the embedded body due to impact force at the time of pouring concrete, it is supported by the engaging rod and the reinforcing member, and the leaf spring portion does not collapse in the lateral direction and the embedded body is used as a formwork. Continue to hold down closely.

Further, according to the above-described structure of claim 3, in addition to the effect of claim 1 or 2, the bar member is held by the holding portion of the fixing device, and the embedded member is fixed to the reinforcing bar by using the bar member. Then, if the molds are erected on both sides of the reinforcing bar, the leaf springs are compressed according to the intervals between the two molds, and the elastic restoring force presses the embedded body tightly to the molds.

(Example) Hereinafter, an example of a concrete erection tool for embodying the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 1, FIG. 2, FIG. 3, etc., the fixing device (10) for the concrete buried body (B) includes a supporting leg portion (11) that abuts against the formwork (80), and a supporting leg portion. Leaf springs (12) with a substantially doglegged shape protruding from (11) so as to face each other.
And an embedded body mounting portion (13) provided between the tip end portions of the leaf spring portion (12) are integrally formed of elastic synthetic resin (polyacetal). Incidentally, the orientation of the leaf spring portion (12) in the present embodiment and the like is also formed so as to be convex outward in the drawings, but either one or both are inward. You may shape | mold so that it may become convex.

The embedded body mounting portion (13) is provided with oval-shaped locking projections (14) on the upper surface thereof, and further has bar member holding portions on both sides thereof so as to hold the bar member between the embedded member and the embedded member. It is provided with two parallel fitting grooves (15) into which bar members can be fitted.

The leaf spring portion (12) of this embodiment is continuous in two stages in the vertical direction, and a plate-shaped reinforcing member (17) having an engaging hole (16) is provided between the continuous portions. . The embedded body mounting portion (13) is provided with an engaging rod 18 on the back surface thereof, and has a leaf spring portion (12).
When the plate is compressed in the direction of the support leg (11), the plate spring (12) is prevented from collapsing in the lateral direction by engaging with the engaging hole (16).

Next, the fixing device (10) for this concrete buried body (B)
The action of will be described.

In order to fix the embedded body (B) such as a wiring box to the formwork (80) using the concrete embedded body (B) fixing device (10), first, the embedded body (B) is attached to the embedded body attachment portion (13). Install B). The embedded body (B) is attached by inserting the locking protrusion (14) into the oblong mounting hole (30) provided through the embedded body (B), and then fixing the device (10) or the embedded body (B). ) Can be easily done by rotating 90 degrees.

Since the fixing device (10) of this embodiment is provided with the small projections (19) on both sides of the locking projection (14), the small projections (1
By engaging 9) with a recess (not shown) provided on the back surface of the embedded body (B), the embedded body (B) can be prevented from rotating.

Next, as shown in FIG. 3, the supporting leg portion (11) of the fixing device (10) is fixed to the one frame (80) with nails or the like. Then, as shown in FIG. 4, the other form (80) is erected on the front surface of the embedded body (B). At this time, since the leaf spring portion (12) is compressed according to the distance between the two molds (80), the embedded body (B) can be moved to the leaf spring portion (12) without any special distance adjustment work. The elastic restoring force presses the mold (80) to fix it closely.

Further, in order to fix the embedded body (B) to the form (80) using the bar material (40), first, the bar material (40) is fitted into the fitting groove (15), and then the embedded body ( B) is attached in the same manner as above, and further, the embedded body attachment part (13) is attached so that the bar material (40) does not come off.
A screw is screwed into the embedded body (B) by using the boss portion (20) provided in the embedded body (B), and the embedded body (B) is drawn.

Next, as shown in FIG. 5, the embedded body (B) is fixed to the reinforcing bar (81) using the bar material (40). Then, as shown in FIG. 6, the form (80) is erected on both sides of the reinforcing bar (81). At this time, the leaf spring portion (12) is compressed in accordance with the space between the two molds (80), and the elastic restoring force presses the embedded body (B) against the mold (80), which is as simple as the above. Fixed closely to.

When the embedding device (10) is vertically compressed between the molds (80), the engaging rod (18) engages with the engaging hole (16) of the reinforcing member (17), so that the concrete is removed. Even if a lateral force is applied to the embedded body (B) due to impact force at the time of driving, the leaf spring part (12) is not crushed in the lateral direction, and the embedded body (B) is surely kept pressed to the formwork. You can

Moreover, since the fixing device (10) is multifunctional, it is integrally molded of synthetic resin, so that it can be mass-produced and supplied at a low cost.

The present invention is not limited to the above-mentioned embodiment, and is embodied by changing the shape, width, etc. of the leaf spring portion (12) as shown in FIG. 7, or by embedding it in a thin concrete wall ( B)
The leaf spring portion (12) may be embodied as a single step which is not continuous in the vertical direction as shown in FIGS. 8 and 9 so as to be suitable for embedding. Further, as shown in FIG. 7, the engaging rod (18) is provided so as to project from the upper surface of the support leg portion (11), and the like, and is appropriately modified without departing from the spirit of the present invention. May be.

(Effects of the Invention) As described in detail above, in the fixing device for a concrete-embedded body according to the present invention as set forth in claim 1, dimensional adjustment of the fixing device is performed between the molds regardless of the size of the intervals of the molds. It is not necessary to perform the above, and the excellent effect that the embedded box can be easily and reliably pressed against the formwork and closely fixed can be achieved. Furthermore, since this fixing device is multifunctional, it is integrally molded of synthetic resin, so that it can be easily mass-produced and supplied at low cost.

In addition, in the fixing device for a concrete buried body according to the present invention described in claim 2, in addition to the effect described in claim 1, when the burying device is compressed between the molds, the engaging rod is reinforced. Prevents the leaf spring part from being crushed in the lateral direction by the engaging rod and the reinforcing member even if the embedded body is engaged with the engaging hole of the member and a lateral force is applied to the embedded body due to impact force at the time of placing concrete. The embedded body can be reliably supported and kept pressed down by the formwork.

Furthermore, in the fixing device for the concrete-embedded body according to the present invention as defined in claim 3, in addition to the effect as defined in claim 1 or 2, it is easy to fit the bar member into the fitting groove of the fixing device. The bar member can be attached to the fixing device. Then, after attaching the bar member to the fixing device as described above, the fixing device is attached to the embedded body, the embedded member is fixed to the reinforcing bar using the bar member, and the formwork is erected on both sides of the reinforcing bar. The leaf spring portion expands and contracts in accordance with the distance, and the embedded body is pressed against the mold by the fixing device, so that it is possible to easily and reliably fix the embedded body.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing a fixing device and an embedding body for a concrete embedded body embodying the present invention described in claims 1 to 3, FIG. 2 is a side view of the same fixing device, and FIG. 3 is a fixing device. Fig. 4 is a side view showing a state in which the fixing device is fixed to the form, Fig. 4 is a side view showing a state in which the fixing device presses the embedded body on the form, and Fig. 5 is a side view showing a state in which the fixing device is attached to the reinforcing bar. 6 and 6 are side views showing a state in which the fixing device presses the embedded body against the mold, FIGS. 7 to 9 are side views showing modified examples of the fixing device, and FIG. A side view showing a state where the embedded body is fixed to the form using bolts,
FIG. 11 is a perspective view showing a conventional installation tool for an embedded body and the embedded body. Explanation of symbols 10 …… Fixing device for concrete embedded body, 11 …… Support leg, 12 …… Flat spring part, 13 …… Embedded body mounting part, 15 …… Mating groove (holding part), 16 …… Aperture, 17 ... Reinforcing member, 18 ... Engaging rod, 40 ... Bar material, 80 ... Formwork, B ... Embedded body.

Claims (3)

[Claims] 1. A support leg portion which is in contact with a form, a substantially V-shaped leaf spring portion which is projected from the support leg portion so as to face each other continuously in one step or two or more steps, and the plate. A fixing device for a concrete embedded body, characterized in that an embedded body mounting portion which is provided between the front end portions of the spring portion and which reciprocates in the direction of the support leg due to expansion and contraction of the leaf spring portion is integrally molded of synthetic resin. 2. The leaf spring portion is formed by continuously connecting two or more stages, and a reinforcing member having an engagement hole is provided between the continuous portions, while the embedded body mounting portion or the supporting leg portion is The fixing of the concrete embedding body according to claim 1, further comprising an engaging rod that engages with the engaging hole and prevents the leaf spring portion from being crushed in the lateral direction when the leaf spring portion is compressed. apparatus. 3. The concrete embedded body fixing apparatus according to claim 1, wherein the embedded body attaching portion includes a holding portion for holding a bar material.