JPH0734650Y2 - Insert metal fitting support device for formwork - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION This invention is made of concrete U-shaped groove, relates mold to form a like squares, in particular, for supporting the insert fitting into the mold, relates insert fittings supporting device to mold Is.

[0002]

2. Description of the Related Art The applicant has made the insert metal shown in FIGS.
Ingredients are shown open in No. Jitsugan 2-22946. Them
In the figure, reference numeral 1 denotes a U-shaped groove frame made of a sheet metal material . An U-shaped inner frame 3 is fixed to the upper surface of a base 2 by being inverted, and an outer frame is provided on both left and right sides of the inner frame 3. 4, and end plates 5 are erected on both ends of the inner frame 3 and the outer frame 4 in the longitudinal direction and attached to the base 2, respectively, whereby a molding chamber 6 having an open upper surface is formed.

Each of the outer frames 4 is rotatably attached to the outside by a hinge 7, and an insert fitting support device 8 is attached to the outer frame 4. This insert fitting support device 8
Is as shown in FIG. Chi words, a nut 10 welded and fixed outward in the circumferential portion of the through-hole 9 which is formed through the outer frame 4, a screw fitted to the outside of the support shaft 11 in the nut 10. The support shaft 11 has a head portion 11a at the right end.
Is formed in a hexagonal column shape, the base portion is formed on a large diameter screw shaft 11b, and the tip portion is formed on a small diameter columnar cylindrical guide pin 11c. The screw shaft is formed by screw-fitting the nut 10 from the outer side (right side). The left end portion of 11b and the guide pin 11c are projected into the molding chamber 6. The amount of protrusion is slightly smaller than the width L1 of the molding chamber 6.

[0004] left end of the screw shaft 11b of the support shaft, and the guide pin 11c to fitting the insert fitting 12. The insert member 12, as shown in FIG. 5, the left end is closed by a metal material, and the screw shaft slightly formed into a bottomed cylindrical shape having a larger diameter than the 11b of the support shaft 11, in that <br/> It is formed in a bottomed cylindrical shape having a shallow female thread 13 on its circumference. Further , a spacer 14 made of soft plastic is projected and fixed to the axial center portion of the left end of the insert fitting 12. The spacer 14 is formed in a conical shape in which the left end 14a (projecting end) has a small diameter, and the small-diameter projection 14b formed in the right end axial center portion.
Is press-fitted and fixed to the left end (bottom wall) of the insert fitting 12. The insert fitting 12 and the spacer 14
Is formed to be slightly longer than the width L1 of the forming chamber 6 described above, and the left end 14a of the spacer 14 is pressed against the inner wall 3 described above.

[0005]

In the above-mentioned conventional one, the insert metal fitting 12 is loosely fitted on the support shaft 11, and water containing cement enters from the opening side at the time of molding to support the insert metal fitting 12. There was a problem that the screw 13 was fixed to the shaft 11 and the screw 13 was clogged because it was formed in the insert fitting 12. Moreover, because it was the support shaft 11 causes screw fitted to a nut 10 which is welded to the outer frame 4, the outer frame 4
It takes time to attach and detach the support shaft 11 to and from the support shaft 11. At the time of molding, water containing cement passes through the through hole 9 and penetrates into the screw fitting portion between the nut 10 and the screw shaft 11b. Was fixed to the nut 10 and could not be removed.

[0006]

In order to solve the above problems, the present invention provides a through hole in one wall of a mold which faces each other with a space therebetween, and a support shaft can be detachably attached to the through hole from the outside. The bottom end of the insert fitting made of a metal material into the inner periphery of the insert metal fitting made of a metal material, and the plastic material A bottomed cap made of, and fitting and supporting the insert metal fitting to the tip end portion of the support shaft through the cap , projecting axially outward to the bottom wall of the insert metal fitting , and projecting A flexible spacer having a small diameter end is fixed, and the protruding end of the spacer is pressed against the inner surface of the other wall of the mold.

The fitting frame is fitted around the through hole of the formwork.
Mounting the support shaft toward the outside of the fitting cylinder
Insert the locking pin into the fitting section between the fitting cylinder and the support shaft.
It is advisable to have a configuration in which a lateral hole that communicates with the outside is formed in the base portion of the fitting cylindrical body while allowing it to be inserted and removed in the radial direction . Further, it is preferable that the tip end portion of the support shaft is a taper shaft whose tip has a small diameter.

[0008]

[Operation] The support shaft is inserted in the axial direction with respect to the fitting cylinder, and is engaged.
It is fixed so that it cannot be inserted or removed with a stop pin. I
Insert the metal fittings into the fitting part formed in the opening at one end.
The inside and outside are sealed watertight by the cap. And that
Fit the inner diameter of the body of the cap to the outer diameter of the support shaft.
After positioning on the formwork, one wall forming the formwork and the other
When the two walls are closed, they are clamped and supported between them.
It

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS. Note that, in FIG. 1, the portions denoted by the same reference numerals as those in FIG. 4 have substantially the same structure as that in FIG.
In FIG. 1, reference numeral 15 is an insert metal fitting support device attached to the vertical center of the outer frame 4. The insert fitting support device 15 welds and fixes the fitting cylinder 16 outward (to the right) around the through hole 9 formed through the outer frame 4 and attaches the support shaft 17 to the fitting cylinder 16. Ru Thea fitted from the outside.

The fitting cylinder 16 has a smooth circular inner surface.
The bottom surface of the base is formed with a horizontal hole 16a.
Form through. Also,The support shaft 17 faces from the right end to the left end.
Once formed in three steps in a small diameter, the head 18 at the right end is
It is formed to have a diameter larger than the inner diameter of the fitting cylindrical body 16, and the base portion 19 is
Diameter and length for loose fitting in the fitting cylinder 16 and the through hole 9
And the protruding portion 20 protruding into the molding chamber 6 is formed at the left end.
The tapered shaft is formed so that the diameter becomes smaller toward the bottom. Also on
A handle operating ring 22 is fixed to the head 18Then
It

The support shaft 17 is inserted into the fitting cylinder 16 from the right side (outer side), the base portion 19 thereof is fitted into the fitting cylinder 16, and the split pin, that is, the locking pin 23 is inserted into the fitting shaft 16. The fitting cylinder 16 and the base 19 are inserted from the orthogonal direction (vertical direction) to prevent axial movement. In addition, the locking pin 23 is Ru or disconnect possible der.

Numeral 25 is a metal insert metal fitting, which is formed into a bottomed cylinder having a closed left end and an opened right end, and has a smooth fitting hole 25a on the inner periphery of the right portion (opening side).
And a female screw 25b is formed on the inner circumference of the left part.
The plastic cap 21 is press-fitted into the fitting hole 25a. As shown in FIG. 2, the cap 21 has a bottomed cylindrical body portion 21 a having a closed left end and an opened right end.
And a large-diameter flange portion 21b bent outward in the radial direction from the right end of the body portion 21a.
1a is press-fitted into the fitting hole 25a of the insert fitting 25, and the flange portion 21b is inserted into the insert fitting 25.
To the right end face of. The inner diameter of the body portion 21a of the cap 21 is the base portion (right end) of the tip portion 20 of the support shaft 17.
Is formed to have an inner diameter that is closely fitted to the support shaft 1.
We support 7.

At the left end of the insert metal fitting 25, that is, at the axial center of the bottom wall , a plastic spacer 26 is projected and fixed to the left. The spacer 26 is formed in a conical shape in which the left end 26a (protruding end) has a small diameter as in the conventional case.
Then , the small-diameter projection 26b formed on the right end axis portion is press-fitted and fixed to the left end (bottom wall) of the insert fitting 25. The length including the insert metal fitting 25 and the spacer 26 is formed to be slightly longer than the width L1 of the molding chamber 6 as in the conventional case, and the left end 26a of the spacer 26 is pressed against the inner wall 3 of the frame body 1.

Next, the usage of the above embodiment will be described. First , as shown in phantom lines in FIG. 3 , the outer frame 4 is rotated outward, and the support shaft 17 is attached to the fitting cylinder 1 from the outside.
Ru is fitted into the 6. In this case , the locking pin 23 is attached to the base 1
The support shaft 17 is prevented from coming off by being inserted into the connector 9 and the fitting cylinder 16 in a direction perpendicular to the same. Next, the cap 21 is fitted into the fitting hole 25a of the insert fitting 25, and the cap 2
1 is fitted to the tip portion 20 of the support shaft 17, and the insert fitting 25 is locked to the tip portion 20 of the support shaft 17. Next, when the outer frame 4 approaches the inner frame 3, that is, is assembled, the left end 26a of the spacer 26 abuts the inner frame 3 with a small area, and the insert fitting 25 allows the outer frame 4 and the inner frame 3 to come together. It is clamped and prevented from moving in the axial direction.

In this state, the concrete slurry is placed in the molding chamber 6.
Re ( fresh concrete ) is filled. In this case, since the open end portion of the insert metal fitting 25 is closed by the cap 21, water containing cement does not enter the insert metal fitting 25, and the fitting tubular body is passed from the molding chamber 6 through the through hole 9. The water containing cement flowing out in 16 directions is discharged to the outside from the lateral hole 16a provided in the base of the fitting cylinder 16 and does not enter the fitting portion between the fitting cylinder 16 and the support shaft 17.
Therefore, since the screw 25b is formed in the fitting cylinder 16, the screw 25b does not become clogged, and the support shaft 17 also has the fitting cylinder 1.
No longer sticking to 6. Further, since the tip end portion 20 of the support shaft 17 fitted to the insert fitting 25 is a taper shaft having a small diameter on the tip end side, when the outer frame 4 is rotated outward after molding, the tip end portion 20 is inserted into the insert fitting 25. Smoothly leave. Further, since the insert fitting 25 and the cap 21 embedded in the molded product after the mold release is closed, the inner peripheral portion is not exposed to the wind and rain.
By removing, the fitting of the hanging metal fitting (not shown) to the insert metal fitting 25 can be performed smoothly. The insert metal fitting 25 may be an insert metal fitting having a smooth circular hole without an internal thread 13 on the inner circumference.

[0016]

As described above, according to the present invention, the support shaft can be quickly attached to and detached from the outer frame, and
Since water containing cement will not enter the insert fitting or the fitting part between the support shaft and the fitting cylinder during molding,
Release of the molded article Ru <br/> to have the effect of, or the like can quickly and easily.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part showing an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a cap showing an embodiment of the present invention.

FIG. 3 is a sectional view of the entire apparatus showing a conventional example.

FIG. 4 is a cross-sectional view of a main part showing a conventional example.

[Explanation of symbols]

1 Formwork 2 Base 3 Inner Frame 4 Outer Frame 5 End Plate 6 Forming Chamber 7 Hinge 9 Through Hole 13 Female Screw 15 Insert Support Device 16 Fitting Cylindrical Body 16a Female Screw 17 Support Shaft 18 Head 19 Base 19a Male Thread 20 Projection Part 20a Right half part 20b Left half part 21 Cap 22 Operating ring 23 Locking pin 25 Insert metal fitting 25a Fitting hole 25b Screw hole 26 Spacer 26a Left end (protruding end) 26b Projection

Claims (3)

[Scope of utility model registration request] The method according to claim 1] formwork together through one wall which faces at intervals hole provided, inserted detachably supporting shaft from the outside to the through hole, the through hole and fitting the above end The bottom of the insert is made of a plastic material is fitted to the inner circumference of the opening of the bottomed cylindrical insert fitting made of a metal material , while being locked by projecting from the fitting cylinder into the mold. A flexible spacer in which a metal fitting is fitted and supported on the tip end portion of the support shaft via the cap, protrudes outward in the axial direction on the bottom wall of the insert metal fitting , and the protruding end portion is formed to have a small diameter. the fixed insert bracket supporting apparatus to mold, characterized in that is pressed against the inner surface of the other wall of the mold the projecting end of the spacer. 2. A fitting cylinder is attached to the periphery of the through hole in the form frame.
Mounting the support shaft toward the outside of the fitting cylinder
Insert the locking pin into the fitting section between the fitting cylinder and the support shaft.
With disconnecting can be inserted radially, the insert fitting the support device to mold a lateral hole formed na Ru claim 1, wherein communicating the outside and the base of the fitting cylinder. 3. The insert fitting supporting device for a mold according to claim 1, wherein the tip of said support shaft is a tapered shaft having a small diameter at its tip.