JP3045945U - Concrete molding insert hardware holder - Google Patents

Abstract

(57) [Summary] [Purpose] In the present invention, even if the support screw is screwed in randomly, the collar determines the degree of screwing and always acts to place the thin part at the boundary between the insert hardware and the formwork. Provided is a concrete-molded insert metal holding tool in which a screw is always torn from a thin portion at the time of demolding, and no trouble is required for detaching the insert metal material. A supporting screw for screwing into a female screw of an insert metal fitting, a mounting portion connected to the supporting screw and fitted and fixed to a seven hole provided in a mold frame, and a mounting portion. 2, a tool hole 10 provided across the support screw 1, a thin portion 8 provided between the support screw 1 and the mounting portion 2 so as to be torn when the mold is removed, and a support screw 1 for the thin portion 8. Beside
A collar 9 is provided so as to close the female screw 4 against the end face of the insert hardware 3.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 The present invention relates to an insert metal holder which can stably support an insert metal at a fixed position of a mold when molding a concrete product, and can be easily separated.

[0002]

[Prior art]

 A support screw to be screwed into the internal thread of the insert hardware, a mounting portion that is connected to the support screw and fits into a hole provided in the formwork, and a tool that extends from the mounting portion to the support screw. A concrete molded insert hardware holder having a hook hole and a thin portion provided at the boundary between the support screw and the mounting portion so as to be torn at the time of demolding is known from Japanese Utility Model Publication No. 4-32255. However, this retainer can be securely fixed to the formwork by screw tightening so that the insert metal fitting does not tilt or come off, and when the mold is removed, the support screw is torn off from the thin part. It has the feature that no trouble is required for detaching.

However, when the support screw is screwed into the insert metal, the thin part of the insert metal holder has a small thickness. In such a case, the thin portion may not be torn even if a breaking force is applied at the time of demolding, and there is a problem that it takes time to remove the insert hardware.

[0004]

[Problems to be solved by the invention]

 In the present invention, even if the support screw is screwed in randomly, the collar determines the degree of screwing and acts to always place the thin part at the boundary between the insert hardware and the formwork. Provided is a concrete molded insert hardware retainer which does not require any trouble to separate the insert hardware.

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, a concrete molded insert metal holder according to the present invention has the following configuration. A supporting screw to be screwed into the female screw of the insert metal fitting, a mounting portion connected to the supporting screw and fitted to a hole provided in the formwork, and a tool provided from the mounting portion to span the supporting screw A hook hole, a thin portion provided between the support screw and the mounting portion so as to be torn when the mold is removed, and a collar provided on the support screw side of the thin portion so as to abut against an end face of the insert hardware to close the female screw. And

[0006]

[Action]

 In the concrete-molded insert hardware holder constructed as described above, even if the support screw is screwed into the internal thread of the insert hardware at random, the flange hits the end face of the insert hardware to determine the degree of screwing, and the thin part is inserted into the insert hardware. At the boundary between the mold and the formwork, and close the female screw of the insert hardware. Therefore, in this state, if the male screw provided at the mounting part of the holder is screwed into the female screw of the form while holding the insert, the insert is securely fixed to the fixed position in the form by the holder. Fixed to. Therefore, when concrete is driven into the formwork, the insert hardware is completely enclosed in the concrete without being inclined or falling off due to the concrete driving pressure, and is stably inserted into the product. In this case, the collar closes the internal thread of the insert metal together with the support screw, so that the mortar does not enter the internal thread.

Next, when the molded product is unmolded to release the mold, a breaking force is applied to the thin portion provided between the support screw of the insert metal holder and the mounting portion. The thin part is torn off and the insert metal is released from the mold by itself, so no extra work is required to remove the insert metal. Moreover, the metal female screw inserted into the removed product is closed by the support screw and the brim during storage of the product, and does not cause rust or foreign matter adhesion due to moisture or foreign matter intrusion. At this time, if the support screw is removed and the bolt is tightened to the internal thread of the insert hardware, the tightening can be performed smoothly and smoothly.

[0008]

【Example】

 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a concrete molded insert hardware holder according to the present invention will be described below with reference to the drawings.

In FIGS. 1 to 4 (a), (b) and (c), reference symbol A denotes an insert metal holder using screws as an attachment means of the attachment portion. In this insert hardware holder A, the support screw 1 and the mounting portion 2 are integrally formed of plastic or the like, and the support screw 1 is screwed into the female screw 4 of the insert hardware 3, and the mounting portion 2 is provided on the peripheral surface thereof. A screw 5 is formed, and the male screw 5 is screwed into a screw 7 to be provided on a formwork 6 for molding a concrete product, thereby securely fixing the insert metal fitting 3 to a fixed position of the formwork 5. The diameter ratio between the support screw 1 and the mounting portion 2 may be set to be the same as shown in FIG. 4 (a) depending on the size of the insert hardware 3, the support strength, and other conditions. Adjustment such as making the mounting portion 2 smaller in diameter than the support screw 1 or making the mounting portion 2 larger in diameter than the support screw 1 as shown in FIG. It can be so.

Further, the insert hardware holder A has a thin portion 8 between the support screw 1 and the mounting portion 2. The thin portion 8 forms a cut between the support screw 1 and the mounting portion 2 (boundary portion) as shown in FIGS. 4 (a), 4 (b) and 4 (c). The thickness between the hole and the hole is made thin enough to be easily torn by the breaking force acting on the insert holder A when the product molded in the mold 6 is released from the mold. A flange 9 is attached to the support screw 1 side of the thin portion 8 so that when the support screw 1 is screwed into the female screw 4 of the insert hardware 1, the flange 9 contacts the end face of the insert hardware 3 to close the female screw 4. .

[0011] Further, the insert hardware holder A is provided with a tool hooking hole 10 for hooking a tool for screwing or unfastening the same. The tool hole 10 is a square or a polygon formed to extend from the mounting portion 2 to the support screw 1. One end of the tool mounting hole 10 is opened below the mounting portion 2, and a known rod spanner is inserted through the opening. The insert hardware holder A is inserted and turned.

[0012]

[Effect of the invention]

 (1) As described above, in the concrete insert metal holder of the present invention, when the support screw is screwed into the female screw of the insert metal, the insert metal is securely fastened to the formwork, and the concrete is driven. The insert can be securely fixed without tilting or detaching by pressure, and the entire insert is enclosed in concrete, so that a stable and powerful insert can be inserted into a product. (2) When the product is removed from the mold after insert molding, the thin part between the support screw and the mounting part is torn off, and the insert hardware is separated from the mold frame by itself, so that it takes time to remove the insert hardware. No need. (3) Even if the support screw is screwed into the insert hardware, the thin part is always located at the boundary between the insert hardware and the formwork, so the thin part is securely located when removing the mold. Since the thin part is not torn, there is no need to remove the insert hardware, and the collar closes the female screw of the insert hardware together with the support screw when molding the concrete product. There are no intrusions. (4) The support screw and collar that are torn off from the thin part block the internal thread of the insert hardware to prevent moisture and foreign matter from entering. By removing the screws, bolts and the like can be screwed smoothly and smoothly.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional front view showing a state in which an insert hardware is attached by a concrete molded insert hardware holder according to the present invention.

FIG. 2 is a plan view of the insert hardware holder.

FIG. 3 is a longitudinal sectional front view showing a state in which a thin portion provided between a support screw and a mounting portion of an insert metal holder is torn when the mold is released.

4 (a), (B) and (c) are longitudinal sectional front views showing examples in which the diameter ratio between the support screw and the mounting portion of the holder is changed.

[Explanation of symbols]

 A Insert hardware holder 1 Support screw 2 Mounting part 3 Insert hardware 4 Female thread 5 Male screw 6 Formwork 7 Female thread 8 Thin part 9 Collar 10 Tool hole

Claims (1)

[Utility model registration claims] 1. A support screw screwed into a female screw of an insert metal fitting, a mounting portion connected to the support screw and fitted and fixed to a hole provided in a formwork, and a mounting screw from the mounting portion to the support screw. A tool hooking hole provided over the bridge, a thin portion provided between the support screw and the mounting portion so as to be torn when the mold is removed, and a female screw closed by contacting the end face of the insert hardware on the support screw side of the thin portion. Characterized in that it is provided with a brim provided as described above.