JPS5844777Y2 - Hardened cement door frame - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a door frame made of hardened cement that can be used in place of a sash for a three-sided frame or an entrance of a three-sided frame in a building.

Generally, this type of door frame has a door stop made of wood and is difficult to install and is easily damaged.

Furthermore, in the case of a pre-installed sash door frame, the sash door frame is reinforced with formwork and concrete is poured, or in the case of a post-installed sash door frame, the plastering part around the frame of the sash door frame is plastered after the concrete form is removed. Finishing methods such as mortar coating are commonly practiced.

However, when the sash door frame is reinforced with formwork and used as a formwork, the sash door frame may be twisted or bent due to lateral pressure during concrete pouring, and the construction is very troublesome and time-consuming. There is.

Furthermore, when the sash door frame area is finished with mortar, the finish is not uniform and there are drawbacks such as a large amount of labor and construction time.

Therefore, this invention solves each of the above-mentioned drawbacks, and by replacing the metal door frame with a cement vertical frame and cement upper frame using hardened cement, there is no need for a wooden frame to attach the door frame to. In addition, the present invention provides a hardened cement door frame that does not require concrete formwork around the sash or finishing with mortar.

This invention is a hardened cement door frame in which reinforcing materials such as glass fibers and asbestos are mixed into cement, and a cement vertical frame and a cement top frame are formed by extrusion molding. The frame and the cement upper frame are made of a frame material having the same cross-sectional shape, and the frame material has a protruding strip at the center of the longitudinal surface thereof, which corresponds to the door contact, and a horizontal portion on both sides of the protruding strip. extending, providing bent edges opposite to the protruding stripes at both ends of the horizontal portion, and forming a concave groove portion between the protruding stripes and the back surface of the horizontal portion and both bent edges;
When the frame material is polymerized, the convex strips are positioned within the concave grooves, and further,
This is a hardened cement door frame characterized by forming a dovetail-shaped injection part into which concrete is injected on the inner wall surface of the recessed groove part. As a sash door, it can completely prevent twisting and bending caused by concrete pouring, and since this hardened cement door frame also serves as a finish, it is very beautiful, and it is easy to accurately install doors etc. In addition, it has the advantage that it has extremely good bite with concrete and that the stacks are reliably aligned.

This invention will be explained below based on the attached examples. A door frame A made of hardened cement installed in an opening of a wall surface I hanging on a structure has a longitudinal bar shape made of hardened cement such as extrusion molding. The cementitious vertical frame 1 and the cementitious upper frame 2 of the body are composed to form a three-sided frame and a three-sided door frame.

The door frame A made of hardened cement has a reinforcing material such as glass fiber or asbestos mixed therein, and its surface is flat and smooth.

Next, the vertical cement frame 1 and the upper frame 2 are integrally provided with a convex strip 4 projecting from the center of the longitudinal surface thereof, which will be in contact with the door.

Further, horizontal portions 9, 9 are formed on both sides of the convex strip 4, and both longitudinal sides of the cement vertical frame 1 and the upper frame 2 are bent inward to improve compatibility with the cement. , bent edges 3, 3, which serve as reinforcement, are formed facing each other.

Further, a dovetail-shaped blowing portion 5 is provided in the form of a protruding or grooved groove on the inner wall surface of the inner bottom portion 8 which is located on the longitudinal back surface of the cement vertical frame 1 and the upper frame 2. It is necessary to form.

This idea has the above-mentioned structure, and in order to install it as a pre-attached door frame to the opening of a structure, each cement vertical frame and cement upper frame are framed, and this is attached to a concrete mold from the front and back sides. All you have to do is press it with a frame, pour concrete between the forms and let it harden, then remove the form and erect a door if necessary.

In addition, in the case of a door frame, retrofitting requires work such as welding, as in the case of a metal door frame.

According to this invention, a door frame is constituted by a cement vertical frame and a cement upper frame each having the same cross-sectional shape of a longitudinal bar made of hardened cement. It can be made continuously by extrusion molding, etc., and has the advantage of being much cheaper and superior in weather resistance compared to conventional metal door frames.

In addition, this cement frame is made by mixing reinforcing frames such as glass fiber and asbestos into cement, making the door frame itself extremely strong and useful as a door frame for openings. The door frame has the practical effect of completely preventing twisting and bending due to lateral pressure during concrete pouring.

Furthermore, the longitudinal protrusions formed on the surfaces of the cement vertical frame and upper frame, which serve as doorstops, sufficiently reinforce the door frame.
In addition, it can fully achieve its purpose as a door stopper, and the horizontal parts provided on both sides of the protruding stripes allow each vertical frame and upper frame to be stacked one after another in a stable and reliable manner, which is useful for storage purposes. .

This has the excellent effect of eliminating the need for a wooden picture frame as in the past, and the fact that bent edges facing the back side are formed on both longitudinal sides of the cement vertical frame and the top frame, so the back side It has good bite with concrete, is extremely tough and can withstand lateral pressure, etc., and also has excellent effects such as eliminating the need for finishing mortar around doors.

In addition, a dovetail-shaped injection part is formed on the inner bottom of the back side of the cement vertical frame and the cement upper frame, so it is strong against twisting and warping, and has good injection with concrete, making it strong. This produces the effect of being configured.

[Brief explanation of the drawing]

The rotating part shows one embodiment of this invention. Figure 1 is a front view of this invention with a door attached, and Figure 2 is the same as Figure 1 A-A.
FIG. 3 is a vertical cross-sectional side view taken along line B--B in FIG. 1, and FIG. 4 is a partially cutaway slope view of the cement vertical frame and the upper frame. Code: A is the door frame, 1 is the cement vertical frame, 2 is the cement upper frame, 3 is the bent edge, 4 is the convex part, 5 is the jet sound
6 is a door, 8 is an inner bottom part, and 9 is a horizontal part.

Claims (1)

[Scope of utility model registration request] In a door frame made of hardened cement, in which a cement vertical frame and a cement top frame are formed by extrusion of cement mixed with reinforcing materials such as glass fibers and asbestos, the cement vertical frame and the cement top frame are The frame is made of a frame material having the same cross-sectional shape, and the frame material has a protruding strip at the center of the longitudinal surface thereof, and has horizontal portions extending on both sides of the protruding strip. Bent edges facing opposite to the protruding stripes are provided at both ends of the horizontal portion, and a groove is formed between the protruding stripes and the back surface of the horizontal portion and both bent edges, so that when the frame material is superimposed, the protruding stripes are inserted into the concave groove. A door frame made of hardened cement, characterized in that a dovetail-shaped injection part into which concrete bites is formed on the inner wall surface of the recessed groove part.