JPH0960191A - Receiving structure of cement formed board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid concentrated loads to improve the strength of a receiving structure by eliminating uneven contact produced by waviness of a receiving surface of a cement formed board, burrs of a square nut, and burrs of edge of a mount hole. SOLUTION: There are provided a cement formed board 31 having hollow sections 33, a mount hole 34 formed from an outer face of the board 31 into the hollow section 33, a bolt 39, which is inserted, through a clamp piece 37 for supporting the board 31, into a mount hole 34, and a receiving fitting 41, in which an internal thread 45 for engagement with the bolt 39 is formed in a base board part 43 and a rubber board 49 having a hole 51 concentric with the thread 45 is bonded to a surface of the part 43, from the side of which the bolt is inserted. By bringing the bolt 39 inserted into the section 33 into threaded engagement with the thread 45, the fitting 41 is brought into contact with the inner surface of the hollow section through the board 49.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a receiving structure for mounting a cement molded plate on the body side (for example, an angle member) of a building.

[0002]

2. Description of the Related Art In steel-framed houses and the like, extrusion-molded cement boards (cement molded boards) are often used as floor materials and wall materials. FIG. 4 is a cross-sectional view showing the mounting structure of the body side and the cement molding plate. The angle member 3 is fixed to the body 1 side, and the back surface of the cement molding plate 5 is in contact with the contact piece 3a of the angle member 3. A hollow portion 7 is formed in the cement molding plate 5, and a mounting hole 9 penetrating the hollow portion 7 is formed in the back surface of the cement molding plate 5. A bolt 13 penetrating a Z-shaped clamp fitting 11 is inserted into the mounting hole 9, and the clamp fitting 11 has a square nut 1 in which the bolt 13 is arranged in the hollow portion 7.
It is fixed to the back surface of the cement molding plate 5 by being screwed into the cement molding plate 5. At this time, the cement molded plate 5 is supported and fixed to the body 1 side by sandwiching the contact piece 3a of the angle member 3 between the clamp fitting 11 and the back surface of the cement molded plate 5.

In such a cement molded plate mounting structure, the bolt 13 for fixing the clamp fitting 11 to the cement molded plate 5 is a hollow portion 7 formed by a square nut 15 having a large contact area.
Since it is abutted (received) on the inner surface of the inside, a wider receiving area can be secured and the mounting strength of the cement molded plate 5 can be increased as compared with the case where a normal hexagon nut is screwed into the bolt 13. .

[0004]

However, in the cement molded plate 5, the flat surface portion on the hollow portion side may have some unevenness due to a molding error or internal stress during curing. Therefore, in the receiving structure in which the square nut 15 is brought into contact with the surface of the cement molded plate 5, if the contact surface of the square nut 15 is the corrugated surface 16 as shown in FIG. The nut 15 comes into contact with the cement molded plate 5 at a point, a line, or the like, and the load is concentrated on the contact portion, which may cause a crack 17. Also, square nut 1
5 shows the edge portion of FIG. 5 (b) when formed by pressing.
The burr 19 shown in FIG. When the burr 19 is attached so as to project toward the cement molding plate 5, the burr 19 bites into the cement molding plate 5,
There was a risk that cracks 17 would occur. Further, the cement molding plate 5 has a burr 21 which is slightly bulged on the outlet side when the mounting hole 9 is drilled.
It may be in a state. When the square nut 15 is brought into contact with the cement molded plate 5 that has been cured in such a state, the square nut 15 comes into contact with only the burr 21 as shown in FIG. 5 (c). There was a risk that the load would be concentrated on the cracks and cracks 17 would occur. The present invention has been made in view of the above situation, and eliminates the uneven contact state of the receiving surface caused by the corrugation of the receiving surface of the cement molded plate, the burr of the square nut, the burr of the edge of the mounting hole, and the like. An object of the present invention is to provide a receiving structure for a cement molded plate capable of preventing the above, and to improve the strength of the receiving structure.

[0005]

Means for Solving the Problems In order to achieve the above object, the structure of a cement molded plate receiving structure according to the present invention comprises a cement molded plate having a hollow portion, and an outer surface of the cement molded plate to the hollow portion. A mounting hole penetrating therethrough, a bolt that is inserted into a clamp metal fitting for supporting the cement forming plate and is inserted into the mounting hole, and a female screw portion that is screwed into the bolt are formed in the substrate portion. A rubber plate having a hole concentric with the female screw portion is attached to the surface of the base plate portion on the bolt insertion side, and the bolt inserted into the hollow portion is screwed into the female screw portion. It is characterized in that the fitting is brought into contact with the inner surface of the hollow portion through the rubber plate. And, in this receiving structure, if unevenness is generated on the surface of the cement molding plate on the side of the receiving metal object, the rubber plate absorbs the unevenness, and the receiving material makes surface contact with the entire uneven surface of the cement molding plate, and the load Does not work locally. Further, since the rubber plate is adhered to the surface of the receiving member on the protruding side of the burr, the burr does not directly contact the surface of the cement molding plate. Further, burrs from the cement molded plate protruding from the mounting holes are accommodated in the holes of the rubber plate, so that the burs do not come into direct contact with the base plate portion of the receiving member.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of a receiving structure for a cement molded plate according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is an exploded perspective view showing a receiving structure for a cement molded plate according to the present invention. A hollow portion 33 is formed in the extrusion molded cement plate (cement molded plate) 31.
Further, a mounting hole 34 that penetrates the hollow portion 33 is formed on the back surface of the cement molded plate 31. A bolt 39 penetrating a Z-shaped clamp fitting 37 is inserted into the mounting hole 34, and the bolt 39 is a rectangular bracket 41 arranged in the hollow portion 33.
Screwed.

A female screw portion 45 to be screwed with the bolt 39 is formed in the central portion of the base plate portion 43 of the receiving member 41. When the bolt 39 is rotated, the bracket 41 inserted in the hollow portion 33 comes into contact with the partition wall 47 of the hollow portion 33 and its rotation is restricted. An elastic material (for example, a rubber plate, a soft resin or the like) 49 having substantially the same outer shape as that of the receiving metal 41 is adhered to the contact surface of the receiving metal 41 with the cement molding plate 31. Rubber plate 49
For example, those having a thickness of about 1 mm are used. A hole 51 that is concentric with the female screw portion 45 is formed in the center of the rubber plate 49.
Is formed, and the inner diameter of the hole 51 is larger than that of the female screw portion 45. The surface of the substrate portion 43 is exposed around the female screw portion 45 through the hole 51. Therefore, the bolt 39
In the state in which is screwed, an annular space 52 (hereinafter, referred to as “burr housing space”) 52 is formed around the bolt 39.

Clamp metal fitting 37 with bolt 39 inserted
The bolt 39 is fixed to the back surface of the cement molded plate 31 by screwing the bolt 39 into the receiving member 41. In addition,
Clamp metal fitting 3 fixed to the back surface of the cement molding plate 31
7 fixes and fixes the cement molding plate 31 to the body side by sandwiching an unillustrated frame side angle member with the back surface of the cement molding plate 31.

The operation of the receiving structure using the above-mentioned receiving member 41 will be described with reference to FIG. FIG. 2 is a view for explaining the operation of the receiving structure according to the present invention in various receiving surface states. When the bolt 39 penetrating the clamp metal fitting 37 is inserted into the mounting hole 34 from the back surface of the cement molding plate 31, is screwed into the receiving member 41 arranged in the hollow portion 33 of the cement molding plate 31, and the bolt 39 is tightened, The clamp fitting 37 is fixed to the back surface of the cement molding plate 31.

At this time, as shown in FIG. 2 (a), when the surface of the cement molded plate 31 on the side of the receiving metal 41 has unevenness 55, the rubber plate 49 absorbs the unevenness 55 and the receiving metal 4
The first substrate portion 43 comes into surface contact with the entire concavo-convex surface of the cement molding plate 31. As a result, the load does not act on the local contact surface unlike the case of the point contact state,
Less likely to crack.

Further, as shown in FIG. 2 (b), the rubber plate 4
9 is adhered to the surface of the receiving member 41 on the protruding side of the burr 57, so that when the receiving member 41 is screwed with the bolt 39,
The burr 57 does not directly contact the surface of the cement molding plate 31. This prevents the burr 57 from biting into the cement forming plate 31 and causing cracks in the cement forming plate 31.

Further, in the state where the bolt 39 is screwed into the female screw portion 45 of the receiving member 41, as shown in FIG. 2C, the burr 59 from the cement molding plate 31 protruding from the mounting hole 34 has a rubber plate. It is accommodated in the burr accommodating space 52 formed on the outer periphery of the bolt 39 in the hole 51 of 49, and the burr 59 does not directly contact the base plate portion 43 of the receiving metal. As a result, the receiving member 41 comes into surface contact with the cement molding plate 31, the load is not concentrated due to only the burr 59 contacting, and cracks are less likely to occur in the cement molding plate 31.

As described above, according to the above-described cement molded plate receiving structure, the rubber plate 49 is adhered to the receiving metal member 41 screwed with the bolt 39, and the burr 59 of the cement molded plate 31 is attached to the rubber plate 49. Since the burr accommodating space 52 for accommodating is formed, the unevenness 55 of the cement molding plate 31, the burr 57 of the receiving metal 41, the burr 5 of the cement molding plate mounting hole 34.
Even with 9, the contact state does not become uneven, concentrated load does not occur, and cracks in the cement molded plate 31 can be prevented. As a result, the strength of the receiving structure can be improved.

Next, another embodiment of the receiving structure for a cement molded plate and the receiving metal article according to the present invention will be described. FIG. 3 is a sectional view showing a receiving structure for a cement molded plate according to another embodiment. In this receiving structure, the cement molding plate 6
The hollow portion 63 of No. 1 has a mountain shape having a substantially triangular cross section. On the back surface of the cement molding plate 61, a mounting hole 6 that penetrates the hollow portion 63.
4 is bored, and the mounting hole 64 opens at the top of the hollow portion 63. The bracket 65 is a plate member bent in a dogleg shape, and the bent pieces 65a and 65b on both sides are brought into contact with the inclined inner wall surfaces 63a and 63b on the left and right of the hollow portion 63. Further, a through hole 67 is formed in the center of the receiving member 65, and a bolt 69 is inserted into the through hole 67.

A nut 71 is provided on the bolt exit side of the through hole 67.
The bolt 69 fixedly attached and inserted into the through hole 67 is screwed with the nut 71. This receipt 65
Also, the left and right bent pieces 65a and 65b are attached to the rubber plate 73.
Are joined. Therefore, the receiving member 65 is the rubber plate 7
The inner wall surfaces 63a, 63b of the hollow portion 63 on the left and right sides
Will be abutted against.

According to the cemented-plate receiving structure constructed as described above, in the case where the abutting surface of the cement-molded plate 61 is uneven as in the case of the receiving structure using the above-mentioned receiving member 41. Also, the unevenness is absorbed by the rubber plate 73,
The bent pieces 65a and 65b on both sides of the receiving member 65 come into surface contact with each other. As a result, it is possible to avoid the concentration of the load and prevent the strength of the receiving structure from being lowered due to cracks.

Further, even when burrs are generated at the end of the receiving member 65, the rubber plate 73 is interposed between the cement molding plate 61 and the receiving member 65, so that the receiving member 65
Burr does not cut into the cement molding plate 61 directly.

Further, according to the receiving structure of this embodiment, when the bent pieces 65a and 65b contact the inclined inner wall surfaces 63a and 63b of the hollow portion 63, the horizontal plate portion 65c of the receiving member 65 is hollow. Since it is arranged away from the inner upper surface 63c of 63, a gap 75 is formed between the inner upper surface 63c and the horizontal plate portion 65c, and the burr 77 of the cement molding plate 61 bulges out at the exit side of the mounting hole 64. Even in such a case, the burr 77 is housed in the gap 75, which also prevents the concentration of the load due to the contact of the burr.

[0019]

As described in detail above, according to the cement molded plate receiving structure of the present invention, the rubber plate is adhered to the receiving member screwed with the bolt, and the cement molded plate is attached to the rubber plate. Since the hole for accommodating the burr is formed, the contact state does not become uneven due to unevenness of the cement molding plate, burr of the receiving metal, burr of the mounting hole of the cement molding plate, and cracks of the cement molding plate due to concentrated load Can be prevented. As a result, the strength of the receiving structure can be improved.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a receiving structure for a cement molded plate according to the present invention.

FIG. 2 is a diagram for explaining the operation of the receiving structure of the cement molded plate according to the present invention in various receiving surface states.

FIG. 3 is a cross-sectional view showing a receiving structure for a cement molded plate according to another embodiment.

FIG. 4 is a cross-sectional view showing an attachment structure of a skeleton side and a cement molded plate.

FIG. 5 is a diagram for explaining the operation of the conventional receiving structure in various receiving surface states.

[Explanation of symbols]

 31, 61 Cement molding plate 33, 63 Hollow part 34, 64 Mounting hole 37 Clamp metal fitting 39, 69 Bolt 41, 65 Receiving material 43 Base plate part 45 Female screw part 49, 73 Rubber plate 51 Hole 59, 77 From edge of mounting hole Protruding burrs 63a, 63b Inclined inner wall surfaces 65a, 65b Bent pieces

Claims (3)

[Claims] 1. A cement molding plate having a hollow portion, a mounting hole penetrating from the outer surface of the cement molding plate to the hollow portion, and a clamp fitting for supporting the cement molding plate. A bolt inserted into the mounting hole and a female screw portion to be screwed with the bolt are formed on the base plate portion, and a rubber plate having a hole concentric with the female screw portion is formed on the surface of the base plate portion on the bolt insertion side. A receiving member to be bonded, wherein the bolt inserted into the hollow portion is screwed into the female screw portion to bring the receiving member into contact with the inner surface of the hollow portion via the rubber plate. Cement molded plate receiving structure. 2. The hole formed in the rubber plate is formed larger than the female screw portion for the purpose of accommodating a burr protruding from an edge portion of the mounting hole.
The receiving structure for the cement molded plate described. 3. The hollow portion is formed in a mountain shape having a substantially triangular cross-section, and a pair of bent pieces are formed on the left and right sides of the receiving member so as to be in contact with inclined inner wall surfaces of the hollow portion. The receiving structure for a cement molded plate according to claim 1, wherein the receiving structure is adhered to the left and right bent pieces.