Glazing structure

Abstract: A glazing frame (A), which includes a glazing portion (3a,4a,6a), a thickness portion (3b,4b,6b), and an anchor portion (3c,4c,6c) and is made by an extrusion molding of fiber-reinforced concrete, is embedded into the inner periphery of an opening (2) in a wall panel (1). Glass 5 or a glazed unit 7 is mounted on the glazing portion (3a,4a,6a). A hollow portion (8) may be provided on the exterior edge of the frame (A).

Description: This invention relates to a pre-cast concrete wall panel incorporating a glazing structure with a glazing portion to be used when a pane of glass or a glazed unit is to be mounted in the wall panel. In order to mount glass in an opening of a PC wall panel, there is generally known a method for glazing by the steps of fitting a window frame (metal sash) made of aluminum or steel in the opening and fitting and fixing the circumferential outermost edge of the glass into a glazing portion of this window frame. In the case of using window frames made of aluminum or steel, there are, however, some problems in that dew condensation easily arises, and dust is mixed with the condensed dew to easily make the surrounding portion around the window glass dirty and so on. Also, there are some other problems in that corrosion and rust or the like easily arise, and fireproofing and heat resisting properties in case of fire are also comparatively inferior and so forth. Furthermore, there is a tendency to make the thicknesses of window frames thinner for a lightweight construction. Therefore, there are additional problems in that the cut-off capacity of water for the joint portion of a window frame is reduced and the thermal insulating property is also reduced. In a prior art metal sash. there is another problem that it takes a high cost to design either an aluminum or steel window frame as to give a heavyweight look or feeling, in particular the impression of weight and depth to such a frame. GB-A-1 470 841 discloses a glazing frame made of extruded fiber-reinforced concrete. The lintel, jambs, and sill are held together by a tensioned flexible element extending around the periphery or within the assembled frame. The tensioned flexible element becomes embedded in the cement used for fixing the frame in an opening in a wall of a building. CH-A-648 079 discloses a glazing frame made of extruded glass fibre-reinforced concrete, the lintel, jambs, and sill being hollow and containing foamed polystyrene as an insulating material. The frame is mounted in an opening in a wall of a building. FR-A-2 644 834 discloses a glazing frame made of moulded or cast asbestos cement, the glazing frame having a glazing portion for mounting glazing means and a thick portion adjacent the outer periphery. The outer periphery has anchoring projections which are embedded in the cement used for fixing the frame in an opening in a wall of a building. US-A-1 468 945 discloses a wall made up of building units, including sill units, lintel units, and jamb units, the units being interengaged and interconnected before concrete is poured into the spaces between them. It would be desirable to be able to provide a structure of a glazing portion which hardly brings about any dew condensation, is excellent in water tight, airtight and fireproofing properties and further allows glass to be surely mounted in a window frame in a precast concrete wall panel. The present invention provides a pre-cast concrete wall panel incorporating a glazing frame made of extruded fiber-reinforced concrete. the glazing frame having an outer periphery embedded in the concrete of the wall panel during the casting of the wall panel, a glazing portion for mounting glazing means, and a thick portion adjacent the outer periphery, wherein the outer periphery of the glazing frame is provided with anchoring projections and/or recesses. the anchoring projections being embedded in the concrete of the wall panel during the casting of the wall panel, the said concrete penetrating into the anchoring recesses during the casting of the wall panel. The glazing frame may be formed with a thick portion having a hollow portion on the exterior side of the glazing frame, whereby a design giving a heavyweight appearance is created. In terms of industrial utilization of the invention, since the glazing portion is formed by extruded material composed of fiber-reinforced concrete as a glazing material, any dew condensation can hardly be generated (unlike the case of an aluminum sash or steel sash) and the neighborhood around the window does not become dirty by the resulting water from the dew condensation. The glazing portion need not be inferior to an aluminum sash in strength and can fix a glass surely and firmly. It is also far more excellent in fireproof and heat resistance properties than glazing portion structuresmade of rubber and metals such as aluminum. Since the glazing frames can be formed by extruding concrete mixed with reinforcing fiber such as carbon fiber, their production is easy and their complicated shapes can be simply molded as well. According to the present invention, it is possible to surely and firmly set the glazing frame. The water tight and airtight properties of the joint portion and the periphery of the glazing portion can be ensured. Also, only the glazing portion of the exterior wall panel can partially be made in a concrete construcwith high strength and high density and it is extremely economical. Moreover, the heat insulating property and weather resistance of the glazing frame can be improved. The glazing frame can also be improved in terms of jamming. Preferred and optional features of the invention will become apparent from the following description of preferred embodiments of the invention with reference to the accompanying drawings, in which: Fig. 1 is a longitudinal (vertical) cross-sectional view of a glazing portion structure as a preferred embodiment of the present invention; Fig. 2 is a (horizontal) cross-sectional view of the glazing portion structure of Fig. 1; Fig. 3 is a longitudinal cross-sectional view showing a glazing portion structure as another preferred embodiment of the present invention; Fig. 4 is a cross-sectional view showing the glazing portion structure of Fig. 3; Fig. 5 is a longitudinal cross-sectional view showing a glazing portion structure as a further preferred embodiment of the present invention; Fig. 6 is a cross-sectional view showing the glazing portion structure of Fig. 5; Fig. 7 is a longitudinal cross-sectional view showing a glazing portion structure as a still further preferred embodiment of the present invention; Fig. 8 is a cross-sectional view showing the glazing portion structure of Fig. 7; Fig. 9 is a longitudinal cross-sectional view showing a glazing portion structure as a yet further preferred embodiment of the present invention; Fig. 10 is a cross-sectional view showing the glazing portion structure of Fig. 9; Fig. 11 is a longitudinal cross-sectional view showing a glazing portion structure as a yet further preferred embodiment of the present invention; and Fig. 12 is a cross-sectional view showing the glazing portion structure of Fig. 11. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In Figs 1 and 2, a glazing frame A (with sill 3, lintel 4, jambs 6) is embedded in an opening 2 in a wall panel 1 ( an exterior wall panel), either a pane of glass or a sash frame (or light) 7 glazed with the glass 5 is fixed to the sill 3, lintel 4, and jambs 6. The exterior wall panel 1 is a so-called "PC panel" and is, if necessary, reinforced by intermingling concrete with a fibrous reinforcement such as steel fibers, carbon fibers, glass fibers, or mixed fibers. Figs. 1 and 2 show a window structure which may be a casement window, a tophinged out-swinging window, or an outward projecting window, for example. A thick portion 3b defining a glazing recess 3a is continuously formed in the longitudinal direction of the sill 3 on the upper side of the sill 3, which is part of the frame A. The sash frame 7 glazed with the glass 5 is fixed in the glazing recess 3a. Also, on the underside of this sill 3, a dovetail-shaped anchor projection 3c deeply embedded into the concrete of the exterior wall panel 1 is continuously formed in the longitudinal direction of the sill 3 so that it may completely be integrated with the exterior wall panel 1. On each side of the anchor projection 3c there is a dovetail-shaped anchor recess into which the concrete penetrates On the upper side of the lintel 4, a thick portion 4b defining a glazing portion 4a is continuously formed in the longitudinal direction of the lintel 4. The glass 5 is fitted into the glazing recess 4a. Also, on the upper side of the lintel 4, dovetail-shaped anchors constituted by a projection 4c deeply embedded into the concrete of the exterior wall panel 1 and recesses into which the concrete extends are continuously formed in the longitudinal direction of the lintel 4 so that it may completely be integrated with the exterior wall panel. Like the sill 3 and the lintel 4, each jamb 6 has a thick portion 6b defining a glazing recess 6a, and also has an anchor projection 6c and recesses. The sill 3, lintel 4, and jambs 6 are extruded sections composed of fiber-reinforced concrete, containing reinforcing fibers such as steel fiber, carbon fiber, and glass fiber. When the sill 3, lintel 4, and jambs 6 are installed, respectively, the separately formed sill 3, lintel 4, and jambs 6 are temporarily fixed to a form for production of the exterior wall panel. Subsequently, concrete is placed in the form and the resulting concrete is sufficiently cured. At the same time as the exterior wall panel 1 is produced, the sill 3, lintel 4, and jambs 6 are embedded in the exterior wall panel. Figs. 3 and 4 are views showing the structure of a double sliding window as another preferred embodiment of the present invention. In this case, a hollow portion 8 having a hollow 8a is formed at the exterior end of the sill 3, lintel 4,and jambs 6 which constitute the glazing frame A. Furthermore, further preferred embodiments can be considered as shown in Figs. 5 through 12. Namely, a structure of a glass block frame shown in Figs. 5 and 6; a structure of a fixed sash window shown in Figs. 7 and 8; a structure of a single sliding window shown in Figs. 9 and 10; a structure of a fixed sash window of a heat insulation type shown in Figs. 11 and 12.

Claims: A pre-cast concrete wall panel (1) incorporating a glazing frame (A) made of extruded fiber-reinforced concrete, the glazing frame having an outer periphery embedded in the concrete of the wall panel during the casting of the wall panel, a glazing portion for mounting glazing means (7), and a thick portion (3b, 4b, 6b) adjacent the outer periphery, wherein the outer periphery of the glazing frame is provided with anchoring projections (3c, 4c, 6c) and/or recesses, the anchoring projections being embedded in the concrete of the wall panel (1) during the casting of the wall panel, the said concrete penetrating into the anchoring recesses during the casting of the wall panel. A wall panel as claimed in claim 1, in which the anchoring projections and/or recesses are provided at least in the lintel (4) and jambs (6) of the glazing frame (A). A wall panel as claimed in claim 1 or 2, in which the anchoring projections and/or recesses are dovetail-shaped. A wall panel as claimed in any preceding claim, in which a hollow portion (8a) is formed at the exterior of the sill (3), lintel (4), and jambs (6) of the glazing frame (A). A wall panel as claimed in any preceding claim, in which the concrete of the wall panel (1) is fiber-reinforced concrete.

Inventors: AGO KENJI, AIBA SHINNOSUKE, AKIHAMA SHIGEYUKI, ARAI TAKAHIRO, FURUYA TOSHIO, IKEDA HIDEKI, KATSUTA YUTAKA, KIKUCHI TAKEO, KOBAYASHI MIKIO, KOSUGE KATSUMI, MATSUBARA YASUYUKI, NAKAGAWA HIROAK, SUENAGA TATSUO, SUGISHITA SHUNICHI, TANAAMI MASATO, TERAUCHI SIN, AGO, KENJI, AIBA, SHINNOSUKE, AKIHAMA, SHIGEYUKI, ARAI, TAKAHIRO, FURUYA, TOSHIO, IKEDA, HIDEKI, KATSUTA, YUTAKA, KIKUCHI, TAKEO, KOBAYASHI, MIKIO, KOSUGE, KATSUMI, MATSUBARA, YASUYUKI, NAKAGAWA, HIROAKI, SUENAGA, TATSUO, SUGISHITA, SHUNICHI, TANAAMI, MASATO, TERAUCHI, SIN, Ago, Kenji, c/o Kajima Corporation, Aiba, Shinnosuke, c/o Kajima Corporation, Furuya, Toshio, c/o Kajima Corp. Tokyo Branch, Ikeda, Hideki, c/o Kajima Corporation Tokyo Branch, Katsuta, Yutaka, c/o Kajima Corporation, Kikuchi, Takeo, c/o Kajima Corporation, Kobayashi, Mikio, c/o Kajima Corporation, Kosuge, Katsumi, c/o Kajima Corporation, Matsubara, Yasuyuki, c/o Kajima Corporation, Nakagawa, Hiroaki, c/o Kajima Corp., Suenaga, Tatsuo, c/o Kajima Corp. Gijutsukenkyusho, Sugishita, Shunichi, c/o Kajima Corporation, Tanaami, Masato, c/o Kajima Corporation, Terauchi, Sin, c/o Kajima Corp. Gijutsukenkyusho
Applicants: FRC KK, KAJIMA CORP, KABUSHIKI KAISHA F R C, KAJIMA CORPORATION
Application year: 1993
Main classification: E06B3
IPC codes: E06B3, E06B1, E04B2