JPH0541130Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a composite plate having uses such as floor panels.

[Conventional technology]

For the purpose of increasing the strength or rigidity of floor panels used in architectural structures, metal plates and curable inorganic material plates are sometimes used.

As for this compounding mode, (1) As shown in Fig. 5,
A head expansion shear connector member 51 made of a different material is fixed to a metal plate 50 by welding, and the bonding strength between the shear connector member 51 and a hardened material plate 52 is increased by using adhesive force, (2) Fig. 4 As in, board 5
0 and the plate 52 via an adhesive layer 53 is a typical example.

[Problem that the invention attempts to solve]

However, the above method (1) requires a separate shear connector member, which increases the material cost, requires a large number of man-hours for welding, and is not suitable for metal plates that are unsuitable for welding or thin plates.

Method (2) requires extra man-hours for bonding, tends to cause variations in bond strength, and can only be bonded after the cured material plates have been completely molded and cured, requiring on-site forming. It was unsuitable for large-scale structures such as

Therefore, the main purpose of the present invention is to provide a composite plate that is easy to form, is suitable for on-site molding, and has sufficient joint strength.

[Means for solving problems]

The present invention to solve the above-mentioned problems has a structure in which a metal plate and a hardened material plate formed by pour molding are stacked together, and a number of anchors are provided by making cuts in the metal plate and standing up the parts surrounded by the cuts. a part is embedded in the hardened material plate, the cut has an arch-shaped outer cut and an inner cut, and a uniform planar anchor part surrounded by both of these cuts is embedded in the metal plate. It is characterized in that the inclination angle of the cut and raise is 30 to 90 degrees.

[Effect]

In the present invention, the anchor part is formed by making a cut in the metal plate and standing up the part, so the anchor part is formed once using a punching die with the required number of shear blades that cover the entire surface of the metal plate. This can be done by a press punching operation, making it extremely easy. In addition, if the hardened material is poured and molded after the anchor part is formed, it is possible to strengthen the bond between the metal plate and the hardened material plate, making it suitable as a plate for use in large structures that require on-site molding. be. Furthermore, since the anchor portion is formed using the metal plate itself, it is advantageous in terms of material cost.

By the way, in Utility Model Application Publication No. 46-68221, the metal plate is made to stand up at 90 degrees, and the upright end is also made to stand at 90 degrees.
It is disclosed that it is bent at the same time.

However, this requires two bending steps when forming the anchor portion. In particular, the shivele can be formed by punching, but there is no effective means for bending to form the ends.

However, in the present invention, unlike the cut-up and bent end portion disclosed in the above publication,
Since the anchor part is uniform, only one punching and standing process is required to form it, and the workability is excellent.

Furthermore, characteristically, the hardened material also wraps around inside the inner cut, resulting in excellent adhesion to the hardened material. Moreover, since the anchor part is cut and raised at an inclination angle θ of 90 degrees or less, stress concentration does not occur at the partially cut and raised end shown by the arrow in FIG. 3 when cut and raised at an angle exceeding 90 degrees.

〔Example〕

The present invention will be explained in more detail below with reference to some examples.

Figures 1 and 2 show examples,
A large number of horseshoe-shaped anchor portions 2 are formed on a metal plate 1 such as a steel plate. This anchor part 2 is formed by punching out two arch-shaped cut lines 3A and 3B with a shearing blade 4 in the presence of a receiving die (not shown), and while proceeding with punching, the cut lines 3A and 3B are 3A, 3B
The part surrounded by is made to stand up.

A hardening material such as cement is poured into the metal plate 1 having such a large number of anchor parts 2, 2, from the protruding side of the anchor parts 2 using an appropriate formwork (not shown), and molded. A hardened material plate 5 is formed. As a result, the anchor portion 2 is embedded in the hardened material plate 5, and the metal plate 1 and the hardened material plate 5 are joined by the adhesive force therebetween.

Note that, as the hardening material, cement-based, resin-based, other inorganic material-based, etc. can be used.

Instead of the horseshoe-shaped anchor part 2 in the above example, it may be two sides of a triangle, three sides of a quadrangle, or more sides of a polygon. Furthermore, it may be an appropriate curve, and these examples (not shown) are also within the gist of the present invention as long as they form an arch shape as defined in the present invention.

As shown in Figure 1, the cut-up inclination angle θ is 30 degrees ~
90 degrees. If the angle is less than 30 degrees, it will be difficult for the hardened material to flow under the anchor part 2, and if the angle exceeds 90 degrees, stress will be concentrated at the partially cut and raised end indicated by the arrow in Figure 3, and excessive force will be applied. When this happens, there is a risk of breakage.

[Effect of idea]

As described above, according to the present invention, it is extremely easy to form a composite plate, the adhesion between the anchor part and the hardened material is extremely good, the bonding strength is extremely high, and the manufacturing cost is reduced. There are advantages.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an example of a metal plate according to the present invention;
The figure is a cross-sectional view when a composite plate is formed using the same metal plate, and Figure 3 is an explanatory diagram of a comparative example of the anchor part.
4 and 5 are cross-sectional views of conventional composite plate examples. 1... Metal plate, 2, 2A to 2D... Anchor portion, 3A, 3B... Cut line, 5... Cured material plate.

Claims (1)

[Claims for Utility Model Registration] In a structure in which a metal plate and a hardened material plate formed by pour molding are stacked together, a number of anchor portions are formed by making cuts in the metal plate and standing up the portions surrounded by the cuts, The cut is embedded in the hardened material plate, and the cut has an arch-shaped outer cut and an inner cut, and a uniform planar anchor portion surrounded by both the cut cuts is connected to the cut made with the metal plate. A composite version characterized by a raised inclination angle of 30 to 90 degrees.