JPH019849Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is used to easily and securely attach intervening wood bricks and to ensure safe workability in forming concrete plates for wall assembly such as PC concrete plates. This relates to the promised disclosure of the locking metal fittings.

(Prior art) In conventional pouring and forming of this type of concrete plate, relatively thin rod-shaped stab pins such as nails were placed upright on the surface of the formwork surface, and wooden bricks were nailed and fixed to these pins. Concrete was then poured into the formwork and cured.

(Problems to be solved) In such conventional methods, there are many difficulties in planting the piercing pins on the formwork surface plate surface, and
When hammering wooden bricks, the piercing pins tend to bend, or the attachment ends of the piercing pins tend to break, resulting in many inconveniences in repeated use of the formwork surface plate.

In view of such inconveniences in the conventional method, the stab pin used for locking is once driven into a mounting plate, etc., and the mounting plate is cut as appropriate and stuck onto the surface of the driving surface plate for use in installing wooden bricks. was also planned, but even with this method, the wood brick mounting pins were severely worn out, which led to an increase in the cost of poured concrete molded products.

In addition, in the conventional method of attaching wooden bricks using puncture pins, the puncture pins have extremely sharp points, which can cause puncture injuries not only to fingers but also to the soles of shoes. It is something that

(Means for solving the problem) The wooden brick positioning locking fitting according to the present invention is
This method was devised in view of the inconveniences in the conventional precedent, and was created by punching out a relatively thick metal plate in the shape of a square, standing it up to a slightly slanted state, and forming it into a claw piece. By bulging out the central part in the upright direction, the horizontal cross section is roughly dogleg-shaped, which reliably prevents the nail piece from breaking or distorting during use, and also prevents puncture accidents to fingers, soles, etc. The purpose is to prevent this from happening.

The wooden brick positioning and locking fittings in this invention are:
In order to achieve the various characteristics described above, we have developed a wooden brick positioning fixture that is fixedly installed on the concrete pouring surface of the concrete pouring form.
The locking metal fitting has a plurality of claw pieces provided by punching and standing up a metal plate, and the claw pieces are slightly inclined inward so as to be arranged at alternate positions with a gap in between. The claw pieces are placed in a point where they are erected facing each other in a state where the claw pieces are erected, and the center portion of the claw piece in the horizontal direction is bulged out in the direction in which the claw piece stands up so that the flat cross section is dogleg-shaped. It is something that

(Example) A typical example of the wooden brick locking fitting according to the present invention will be described below with reference to the attached drawings.
This is a formwork for forming concrete plates for various wall constructions, which is provided by factory casting of PC boards, etc., and 2 shows the formwork surface plate.

The bottom plate portion of the locking fitting 4, in which the claw piece 4a is formed by punching out a metal plate or the like, is placed at the intervening position of the wooden brick 3 on the surface plate 2 in such a general pouring formwork, that is, the claw piece. Attach and arrange the base of 4a with a spot or a bolt or other appropriate method,
A wooden brick 3 is nailed onto this locking metal fitting 4 to allow concrete 5 to be placed. That is, by nailing the wooden bricks 3 to the locking fittings 4, the wooden bricks 3 are properly positioned, and at the same time, displacement during construction is reliably prevented, and the concrete plate in which the wooden bricks 3 are buried can be reliably and easily placed in a predetermined position. It was promised to be provided.

The locking metal fittings 4 used in such construction are as follows:
Usually, a thick metal plate, often a steel plate, etc. is punched out in the shape of a square, and the claw piece 4a is configured to stand up. Unlike the conventional pin configuration, the metal fitting forming cost is reduced, and the metal fitting structure is particularly simple. It has a high load capacity and can reliably eliminate the inconveniences of the conventional piercing pin structure.

Thus, the claw piece 4a that is erected is slightly inclined in the direction of the punched hole than when it is erect.
The bent portion is prevented from weakening as much as possible, and the center portion of the erected claw piece 4a is bulged in the upright direction, that is, in the direction opposite to the punched hole, in the upright and upright directions, thereby creating a bulging back. It constitutes a ridge 4a' and has a doglegged or cross-shaped cross section in the horizontal direction.

In order to improve the grip on the wooden bricks 3, it was specifically planned to form the claw pieces 4a into a round shape and to make the upright ends of the claw pieces 4a into a semi-arc shape.

The locking fitting 4 according to the present invention has the above-mentioned characteristic structure, and is usually fixed to two surface plates of a pouring form. However, it is also planned to install it on the upper mold surface which will be the pouring surface, and in such a case, after moistening the wooden brick, it will be fixed and placed by hammering it towards this locking metal fitting 4. It was designed to be set up.

In order to improve the biting property of the wooden bricks 3, the upright claw pieces 4a are provided facing each other, and the claw pieces 4a are inserted between the wood fibers of the wooden brick 3, so that the claw pieces 4a are inserted between the wood fibers of the wooden brick 3 and The claw piece 4a is configured to hold the wood fiber bundle, that is, the wood grain, and due to the relationship of the adhesion density to the wooden brick 3 and the relationship of free arrangement to the two surfaces of the surface plate, it is possible to The fastener 4 has as few parts as possible, and is only provided with a pair of opposing claw pieces 4a on the surface of a single metal plate.

(Effects of the invention) The locking fitting 4 according to the invention is expected to achieve specific effects on the above-mentioned characteristics due to such a configuration, and the claw pieces 4a are also effective when nailing wooden bricks 3. Because it has a special load-bearing structure, the claw piece 4
This enables the construction of extremely rough wooden bricks without any accidents such as breakage or deformation of a, which improves the construction characteristics on site and allows repeated use of the formwork surface, reducing molding costs. The price was reduced.

Furthermore, the sloping or curved structure of the erected claw piece 4a for load-bearing properties is designed to avoid injury accidents during work, especially stepping-through accidents, etc. as much as possible, and to ensure safe concrete pouring. , which promises to be molded.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a typical embodiment of the locking fitting according to the present invention, Fig. 2 is a plan view of the same, Fig. 3 is a perspective view showing the construction state, and Fig. 4 is a sectional view of the same. FIG. 5 is a sectional view of the main part of the wood brick attachment part, and FIG. 6 is a sectional view of the main part of the molded product. In the figure, 1...formwork, 2...surface plate, 3...wood brick, 4...metal fittings, and 5...concrete are shown.

Claims (1)

[Scope of utility model registration request] A locking fitting for positioning wooden bricks that is fixedly arranged on the casting surface of a concrete pouring form, and the locking fitting has a plurality of claw pieces that are provided by punching and standing up a metal plate. In addition, the claw pieces are erected facing each other in a slightly inwardly inclined state so as to be arranged at alternate positions with a gap in between, and the center portion of the claw piece in the horizontal direction is A locking fitting for positioning wooden bricks in a concrete casting form, characterized in that the claw pieces bulge in the upright direction so that the flat cross section is dogleg-shaped.