JPH0640731Y2 - Curtain wall mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a curtain wall mounting structure, and more particularly to a structure for increasing a frictional force between a fastener of a curtain wall and a metal fitting on a body side on which the fastener is seated.

[Prior Art] A conventional fastener fixed to a curtain wall,
The metal fittings on the body side, which are provided on the building body and on which the fasteners are seated, have a reduced frictional force due to the surface rustproofing treatment.

[Problems to be solved by the device]

In the conventional technology, since the frictional force between the fastener and the metal fitting on the body side is reduced as described above, the curtain wall easily moves with respect to the body. Are temporarily fixed, and both are welded for final fixing.

However, if there is a welding process, not only a welder and equipment are required, but also a problem occurs due to the generation of sparks, and there is a problem that the position cannot be readjusted after welding.

The present invention has been made in view of such problems of the conventional technique, and an object thereof is to make it possible to fix the fastener and the metal fitting on the body side only by bolting.

[Means for Solving the Problems]

In this invention, in a curtain wall mounting structure in which a fastener fixed to a curtain wall and a metal fitting on the building on the building body on which the fastener is seated are tightened with bolts, each contact between the fastener and the metal fitting on the body is made. A powder coating layer of a saturated polyester resin is formed on at least one of the surfaces, and the powder coating layer is used as an adhesive layer and ceramic powder is distributed on the surface.

[Action]

The powder coating layer prevents the curtain wall and the metal fittings on the body side from rusting, and the ceramic powder on the surface increases the frictional force, so that the metal fittings on the body side and the curtain wall are firmly fixed only by bolting. To be done.

Further, the saturated polyester resin forming the powder coating layer is excellent in corrosion resistance, weather resistance, impact resistance, abrasion resistance, adhesive strength and coating strength (scratch resistance), and therefore effectively protects the curtain wall and metal fittings on the body side. In addition, the ceramic powder has excellent holding power and does not drop the ceramic powder from the paint layer.

〔Example〕

1 to 3 show the first embodiment, in which a fastener 2 made of steel fixed to a curtain wall 1 is directly mounted on an upper surface of a steel-side metal fitting 4 fixed to a slab 3 forming a building structure. After being placed, the fastener 2 is fixed to the body-side metal fitting 4 by the bolt 5.

A tip of a bolt 7 is screwed into a weld nut 6 inside the vertical portion of the body-side metal fitting 4, and the bolt 7 is embedded in a concrete slab 3 to form an anchor. Further, a long hole 8 for allowing the bolt 5 to penetrate is opened in the horizontal portion of the body-side metal fitting 4, and a nut 11 covered with a cap 9 is held on the lower surface thereof. The nut 11 is held on the lower surface of the elongated hole 8 so as to be movable along the elongated hole 8.

The cap 9 is fixed in advance to the metal fittings 4 on the body side while holding the nuts 11 inside, and in the step of forming the slab 3 by placing concrete in the state where the metal fittings 4 on the body side are arranged, the cap 9 is formed on the surface of the long hole 8. Is applied with a peeling tape to prevent concrete from entering into the long hole 8.

The bolt 5 is integrally formed with a dodecagonal screwing input portion 5b formed on the upper surface of the head through a small diameter portion 5a, and is broken at the small diameter portion 5a when the tightening torque of the bolt 5 exceeds a predetermined value. As a result, the screw-in input section 5b comes off.

Friction force increasing means shown in FIG. 3 is provided on the upper surface of the body-side metal fitting 4 and the lower surface of the fastener 2. That is,
A powder coating layer 12 of saturated polyester resin having a thickness of 500 to 600 μm is formed on the surface of the frame-side metal fitting 4 (same for the fastener 2). The powder coating layer 12 is a powder coating made of a raw material obtained by modifying a saturated polyester resin to impart strong self-adhesion, and has corrosion resistance, weather resistance, impact resistance, abrasion resistance, adhesive strength, Excellent in both tensile strength and coating strength (scratch resistance).

The frictional force increasing means uses the powder coating layer 12 as an adhesive layer and projects the ceramic powder 13 on the surface thereof to evenly distribute the ceramic powder 13. The ceramic powder 13 is made of alumina (Al
₂ O ₃ ) powder that is electro-melted and crushed,
A particle size of μm is used. The hardness of the ceramic powder 13 is Mohs code 8, and has the same hardness as ruby and sapphire.

In this way, the frictional force increasing means covers the surface of the body-side metal fitting 4 with the powder coating layer 12 of the saturated polyester resin, and the ceramic powder 13 is distributed on the surface, so that the surface of the body-side metal fitting 4 has no corrosion resistance. As it is applied, the frictional force is increased.

Therefore, since the frictional force at the contact surface between the fastener 2 and the body-side metal fitting 4 is sufficiently increased, the fastener 2 is sufficiently fixed to the body-side metal fitting 4 only by the fastening force of the bolt 5. Therefore, the fastener 2 can be prevented from moving. Therefore, it is not necessary to weld the fastener 2 to the body-side metal fitting 4. By the way, as bolt 5, it is a grade equivalent to F10T and the dimensions are M12 x 4
The frictional force between the fastener 2 and the skeleton-side metal fitting 4 when using two No. 0 fasteners with a tightening torque of 8.9 kg · m was about 0.374 to 0.394 in terms of slip coefficient.

In this embodiment, the frictional force is increased by the powder coating layer 12 of the saturated polyester resin and the ceramic powder 13 on both contact surfaces of the fastener 2 and the body-side metal fitting 4, but depending on the desired frictional force. It is also possible to employ the frictional force increasing means on only one of the two contact surfaces.

Further, the bolt 5 used in this embodiment is formed with a small diameter portion 5a and a screwing input portion 5b, and when the tightening torque from the screwing input portion 5b reaches a predetermined value, the small diameter portion 5a is broken. Since the screw-in input portion 5b falls off, after the curtain wall 1 is installed, each bolt 5 is tightened with a predetermined torque by checking the presence or absence of the screw-in input portion 5b in the bolt 5. You can check whether or not it is.

FIG. 4 shows a second embodiment, in which the metal fittings 4 on the body side are provided.
This is an example in which a spacer 14 is arranged between the fastener 2 and the fastener 2. Here, the fastener 2 is exactly the same as that of the first embodiment, but the skeleton-side metal fitting 4 has a convex arc at the center of the upper surface, and is formed on the lower surface of the spacer 14 facing the arc portion 4a. A concave arc portion 14a is formed, and the upper surface of the spacer 14 is a flat surface and faces the lower surface of the fastener 2. Zama 14
Is a long hole that is long in the direction orthogonal to the long hole 8 of the body-side metal fitting 4.
15 penetrates. Although not shown in the body side metal fitting 4, the same cap 9 and nut 11 of the first embodiment are
It is arranged below the long hole 8.

In this embodiment, therefore, even if the skeleton-side metal fitting 4 cannot be fixed to the slab in a correct posture due to the unevenness of the slab top surface (not shown), the space between the skeleton-side metal fitting 4 and the arc-shaped portion 4a is not sufficient. The upper surface of the spacer 14 can be made horizontal by sliding the circular arc portion 14a of the seat 14 in the circular arc direction.

In this embodiment, all of the upper surface of the circular arc portion 4a of the frame-side metal fitting 4, the lower surface of the circular arc portion 14a of the spacer 14, the upper surface of the spacer 14 and the lower surface of the fastener 2 are described in the first embodiment. Since the frictional force increasing means described above is used, slippage occurs between the body side metal fitting 4, the spacer 14 and the fastener 2 by tightening a bolt (not shown) (the same as the bolt 5 in the first embodiment). Instead, a curtain wall (not shown) can be fixed to the slab. Therefore, the curtain wall can be fixed in a predetermined posture.

Also in this embodiment, the frictional force increasing means may be used only on one of the two contacting surfaces facing each other depending on the desired frictional force. Other configurations and operations are the same as those in the first embodiment.

[Effect of device]

As described above, in the present invention, the powder coating layer prevents the curtain wall and the metal fittings on the body side from rusting, and the ceramic powder on the surface increases the frictional force. Thus, the body side metal fitting and the curtain wall are firmly fixed. For this reason, since the fastener and the metal fitting on the skeleton side are fixed only by the bolts, there is no need to weld the two together, and the problems caused by welding are eliminated.

Further, the saturated polyester resin forming the powder coating layer is excellent in corrosion resistance, weather resistance, impact resistance, abrasion resistance, adhesive strength and coating strength (scratch resistance), and therefore effectively protects the curtain wall and metal fittings on the body side. In addition, the ceramic powder has an excellent holding power, and there is an effect that the ceramic powder does not fall off from the coating layer.

[Brief description of drawings]

1 is a cross-sectional view of the first embodiment, FIG. 2 is a plan view of the metal fittings on the body side of FIG. 1, FIG. 3 is an enlarged cross-sectional view of the metal fittings on the body side and the fastener surface, and FIG. 4 is the second embodiment. FIG. 1 ... Curtain wall, 2 ... Fastener, 3 ... Slab,
4 ... Body side metal fittings, 5 ... Bolts, 11 ... Nuts, 12 ... Saturated polyester resin powder coating layer, 13 ... Ceramics powder,
14 ... Zama.

Claims (1)

[Scope of utility model registration request] 1. In a curtain wall mounting structure in which a fastener fixed to a curtain wall and a metal fitting on the body on the building body on which the fastener sits are tightened with bolts, each of the fastener and the metal fitting on the body is provided. A curtain wall mounting structure characterized in that a powder coating layer of saturated polyester resin is formed on at least one of the contact surfaces, and the powder coating layer serves as an adhesive layer to distribute ceramic powder on the surface. .