JP3054326B2 - Lightweight cellular concrete panel mounting hardware - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a fitting for attaching a lightweight cellular concrete panel to a structural frame of a building.

[0002]

2. Description of the Related Art Conventionally, mounting hardware as described in Japanese Patent Publication No. 6-41700 has been known as the above-mentioned hardware. The mounting hardware 19 will be described below in detail with reference to FIG. A first blind hole 3 is drilled from a small edge 2 of a lightweight cellular concrete panel (hereinafter, referred to as a panel) 1a, 1b, and a rod-shaped or cylindrical anchor member 4 is inserted into the blind hole 3.

[0003] A second blind hole 6 is formed from the back surface 5 side of the panels 1a and 1b toward the inside and crosses the first blind hole 3. Then, the locking member 7 such as a bolt is inserted into the second blind hole 6 and the anchor member 4 is inserted into the annular portion provided at the distal end thereof, or the anchor member 4 is similarly provided at the distal end. An external thread is screwed with a female thread formed on the anchor member 4.

FIG. 6 illustrates a mode in which a male screw 18 of a bolt 7 as a locking member is screwed to an anchor member 4 having a short tubular shape and a female screw 17 formed in the center of the member. I have. When the upper and lower panels 1a and 1b are used for the structural body shown in FIG. 5 using the mounting hardware 19 of this embodiment, the following operation is performed. In the lower panel 1a, a washer 9 and a plate-shaped locking plate 11 are already inserted at the base end of the bolt 7, and these bolts 7
Is locked by the head 8.

In the upper panel 1b, a washer 9 and a lightning bolt-like holding plate 10 are fastened to the base end of the bolt 7 by the bolt 7 in the same manner as described above, and are locked to the head 8 thereof. Then, an L-shaped through-angle 14 welded and fixed to an upper flange 13 of a beam 12 made of H-shaped steel, which is a kind of a structural skeleton of a building, and the locking plate 11 being welded and fixed to the through-angle 14.
The two members of the vertical piece 16 of the panel receiving member 15 permitting the movement of the panel are sandwiched between the upper panel 1b and the holding plate 10.

[0006]

The above prior art has an excellent effect that a panel can be efficiently attached to a structural body in a dry manner without using mortar or the like. Because the strength of the material is generally lower than that of ordinary concrete, when applying the above-mentioned prior art under a specific condition or to a specific part of a building, it is difficult to apply a panel at a portion where the anchor exists. There is a fear that the part will peel off as if it were cut off.

For example, when a balcony is formed by panels, the above-mentioned mounting hardware is used below the panel, and the upper metal is not attached or the upper metal is reinforced with other metal fittings. If the balcony is subjected to strong wind pressure, the mounting hardware located below supports the panel in a cantilever manner, and the load due to the wind pressure is concentrated on the hardware. Then, there is a possibility that the panel is destroyed at a portion indicated by a broken line A shown in FIG. The object of the present invention is to
It is an object of the present invention to provide a hardware which makes it more difficult for the panel to be broken even when the mounting hardware as described above is used.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides an anchor member consisting of a rod-like body or a cylindrical body inserted into a panel from a foreside, Combination with a locking member inserted inside, the distal end of which is locked by the anchor member, and the base end of which is directly or indirectly fixed to the structural frame of the building And a mounting member for a panel, wherein projections slightly higher than other portions are formed at both ends of the anchor member on the back side of the panel.

[0009]

When the mounting hardware of the present invention is incorporated in a panel, it is not clear what kind of phenomenon is occurring in the panel, but it is considered as follows. In the prior art, as shown in FIG.
At the center of the anchor member 23 inserted therein, the panel 2
When a load in the direction of arrow B is applied through the locking member 27 locked to the anchor member 23 in the first second blind hole 28, the anchor member 23 bends slightly or momentarily. The bent portion hits the inner surface of the first blind hole 22. Then, some panels cannot withstand the concentrated load, and a part of the panel 21 is cut off at a portion indicated by a chain line A.

However, in the hardware according to the present invention,
When the load is applied to the anchor member as described above, FIG.
Although the anchor member 23 is slightly bent as shown in FIG.
2 is formed with a protrusion 25 slightly higher than the other portions, so that the protrusion 25 also hits the inner surface of the first blind hole 22. Therefore, the load applied to the anchor member 23 is distributed to the center and both ends, and even if a larger load is applied to break the base material of the panel 21, the panel 21 becomes wider and wider than in the related art. A break line runs on the outside of the panel 21 as a part of a chain line C shown in FIG. This means that the proof stress is apparently larger than that of the prior art, and when the same load is applied to the prior art panel and the panel of the present invention, the present invention tends to cause the panel to break, or It can be said that the present invention requires a larger load to cause breakage.

[0011]

Next, an embodiment of the present invention will be described with reference to the drawings. The field to which the metal fitting for mounting the panel of the present invention is applied is the same as the field of the prior art described above. Therefore, only the structure of the metal fitting for mounting the panel will be described, as shown in FIGS. The panel mounting hardware 24 of the embodiment is composed of a combination of one cylindrical anchor member 23 having one female screw 26 at the center and a bolt 27 as a locking member.

As shown in FIG. 2, the anchor member 23
Knurling of a predetermined width is applied to both end portions 32, and a projection portion 25 is formed outwardly when a portion to which a compressive force is not directly applied in the knurling process is viewed microscopically. In FIG. 1, the projection 25 is drawn such that both end portions 32 of the anchor member 23 project entirely outward.)

Returning to FIG. 1, the bolt 27 is a bolt having a normal shape. A bolt head 28 is formed at a base 31 and a male screw 30 is formed at a distal end 33. The female screw 26 of the anchor member 23 can be screwed.

The mounting hardware 24 composed of the above combination
Is used to attach panels to the structural frame of the building as shown in FIG. As a result, when a load is applied to the anchor member 23, the central portion thereof is slightly bent and the first blind hole 22
And a concentrated load is applied to a part of the panel. At both ends 32 of the anchor member 24,
Since the protrusion 25 is provided on the bolt 27 side, the protrusion 25 also contacts the inner surface of the first blind hole 22.

As a result, the above concentrated load is dispersed, and even if the same load as in the prior art is applied to the bolt 27, the panel is not broken. Even if the panel breaks down, it is under a larger load than in the prior art. The present inventors have confirmed this fact by the following experiment. That is, the panel mounting hardware of the prior art and the hardware according to the present embodiment are set on the panel as shown in FIG. 5, and a pulling load is applied to the bolts 27 of the metal to partially excavate the back side of the panel. The pull-out force required to cause breakage was measured. Table 1 shows the experimental conditions and experimental results.

[0016]

[Table 1]

As is evident from Table 1, the metal according to the present invention requires about 10 times less force to break a part of the panel and cause breakage than the metal of the prior art.
It is 0 kgf larger.

The present invention can be implemented by partially modifying the above-described embodiment as follows, as long as the effects of the present invention are not significantly impaired following the fundamental technical concept. (1) The protrusions 25 made of a material different from the material of the anchor member may be formed at both end portions 32 of the anchor member 24. For example, if the anchor member is made of steel,
The protrusion 25 may be formed by winding an aluminum tape. According to the same experiment as above, the pulling force in this case was 654 kgf.

Of course, the protrusion 25 can be formed of the same material. In this case, the projection 25 may be formed by shaving off the center portion of the anchor member 23 and both end portions 32 so that both end portions are relatively high. When the same pulling force was measured for this product, it was 675 kgf.

Further, the distal end 3
The locking member 27 may be locked to the anchor member 23 by providing an annular portion at 3 and inserting the anchor member 23 into the annular portion. In this case, the female screw 26 of the anchor member 23 is of course unnecessary. In this embodiment, however, it is important that the projections 25 face the rear side of the panel. Further, a solid rod-shaped member can be used instead of the tubular member as the anchor member 23.

The panel mounting hardware of the present invention is preferably used in a building where the panel base material is likely to be broken. For example, in the case where the panel is built vertically to the structural frame and the fixing position to the structural frame is deviated downward, it is better to use the panel, for example, for a balcony that tends to be cantilevered. The metal hardware of the present invention can be used in a case where it is built horizontally in the structural body, and the anchor member exerts its effect either when it is installed horizontally or vertically with respect to the panel.

[0022]

As described in detail above, the present invention can be applied to a structural frame of a building by only slightly improving the shape and structure of a panel mounting hardware composed of a combination of an anchor member and a lifting member. It has an excellent effect that the destruction of a damaged panel can be significantly suppressed.

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment according to the present invention.

FIG. 2 is a front view of the anchor member.

FIG. 3 is a partial cross-sectional view showing a state in which the mounting hardware according to the present invention is incorporated in a panel.

FIG. 4 is a partial sectional view showing a state where a load is applied to the anchor member.

FIG. 5 is a partial cross-sectional view showing a state in which a panel is mounted on a structural skeleton using a panel mounting hardware in the related art.

FIG. 6 is a perspective view of a panel mounting hardware according to the related art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 Panel made of lightweight cellular concrete 23 Anchor member 24 Mounting bracket 25 Projecting part 27 Locking member 31 Base end 33 Top end

Continuation of the front page (56) References Japanese Utility Model Showa 61-110708 (JP, U) Japanese Utility Model Showa 64-57312 (JP, U) Patent 2862791 (JP, B2) Japanese Patent Publication No. 4-16579 (JP, B2) Kohei 6-39820 (JP, B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) E04B 2/94

Claims (2)

(57) [Claims] 1. A rod-shaped or cylindrical anchor member (23) inserted into the interior of a lightweight cellular concrete panel (21) from a small face thereof, and a locking member (27) inserted into the interior from the back side of the panel. ) Wherein the distal end (33) is locked to the anchor member and the proximal end (31)
Is a combination of a locking member directly or indirectly fixed to the structural body of the building, and the both ends (32) of the anchor member on the back side of the panel are slightly higher than other portions. A mounting hardware for a panel made of lightweight cellular concrete, comprising a protruding portion (25) formed thereon. 2. The mounting hardware for a lightweight cellular concrete panel according to claim 1, wherein the projecting portion (25) is integrally formed of the same material as the anchor member.