JP3199228B2 - Reforming method of metal door frame - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a renovation method as a method of covering a metal door frame in, for example, an entrance of an entrance, an entrance of a kitchen, a window of a room or a corridor, an entrance of a bathroom, and the like.

[0002]

2. Description of the Related Art Door frames made of metal such as aluminum or steel eventually rust and become unsightly decayed.
They may be replaced by new ones that are outdated or outdated if they do not rot. In this case, removing the existing door frame not only requires a great deal of labor and cost, but also significantly damages the building frame. Therefore, the so-called cover method is used in which the existing door frame is left as it is and a new door frame is installed. A renovation method of a metal door frame has been performed.

FIG. 4 shows a method of renovating a metal door frame by a cover method of the present applicant (JP-A-7-293115).
FIG. 1 is an explanatory diagram of the related art, and a new door frame covering the existing door frame S is separately framed in advance in a factory as an outdoor door frame 52 and an indoor door frame 54.
At the site, the fitting ends are fitted from both the indoor side and the outdoor side, and the butting ends are welded P to be integrated. Further, in order to accurately position the new door frame and stabilize the mounting, a steel anchor 56 or a base material is used, and the outdoor door frame 52 and the indoor door frame constituting the new door frame. In order to support both of them at the same time, a bent object having a wide stepped portion extending between the inside and outside is used as the anchor 56.

[0004] In addition, since it is necessary to easily insert the door frame into the existing door frame S, or to interpose a reinforcing back plate 58 for attaching a hinge to the vertical frame of the new door frame, the vertical frame of the new door frame is required. A space 60 is provided between the existing door frame and the vertical frame. A steel anchor 56 is welded to the existing door frame S to maintain the space 60 and at the same time obtain the necessary mounting strength, and the new door frames 52, 54 are attached to the anchor 56.
Is welded in place of the screws, and further, joint welding P between the ends where the outdoor door frame 52 and the indoor door frame 54 abut is performed.

[0005]

In the conventional method of renovating a metal door frame, the welding means is frequently used as described above, so that not only a skilled and difficult-to-obtain welder is required but also the work efficiency is extremely poor. There are many disadvantages in terms of construction period and construction cost, and there is a problem in that sparks are scattered during welding in the on-site construction, which is disadvantageous also in terms of safety.

The outdoor door frame 52 and the indoor door frame 54
Is performed inside the tight material 62 or the fitting groove 64 to which the door receiver is attached, so that there is a problem that the welding operation is very difficult.

Accordingly, the present invention solves the above-mentioned problems of the prior art and, when attaching a new door frame to an existing door frame, secures the necessary installation strength while ensuring safety. It is an object of the present invention to provide a method of remodeling a metal door frame which can easily perform the mounting operation.

[0008]

In order to achieve the above object, the present invention comprises a step wall 11 for contacting a door on the inner peripheral surface of each of the left and right vertical frames 7, 7 and the upper and lower frames 8, 9, The step wall 1
1, a new outdoor door frame 1 and a new indoor door frame 2 formed in advance are fitted into an existing door frame S having an outdoor web wall 15 and an indoor web wall 16 from the outside and the inside of the room, respectively. The metal door frame is attached to the door frames 1 and 2 by a reforming method. In this method, first, a steel anchor 3 having a substantially L-shaped cross section having a mounting piece 25 is attached to the left and right vertical frames 7, 7 of the existing door frame S.
And, it is fixed to the outdoor web wall 15 of the upper and lower frames 8, 9 with screws 23. Next, the new outdoor door frame 1 provided with the flange 21, the step portion 17, and the base piece 19 is fitted from the outdoor side such that the step portion 17 of the new outdoor door frame comes into contact with the step wall 11 of the existing door frame, First, the flanges 21 of the left and right vertical frames and the upper and lower frames of the new outdoor door frame 1 are fixed to the mounting pieces 25 of the anchor 3 with screws 27 on the outdoor side. At the same time, at least one synthetic resin plate-shaped liner 5 is interposed between the left and right vertical frames 7 and 7 of the existing door frame S and the indoor web wall 16 of the upper frame 8, so that the left and right vertical The lower piece 19 of the lower frame of the new outdoor door frame 1 is screwed directly to the interior web wall 16 of the lower frame 9 of the existing door frame S while the lower piece 19 of the frame and the upper frame is fixed with the screw 29. By stopping, the new outdoor door frame 1 is attached to the existing door frame S.
Thereafter, the new indoor door frame 2 is fitted from the indoor side, and the new indoor door frame 2 is inserted into the base piece 19 of the new outdoor door frame 1 secured to the indoor web wall 16 of the existing door frame S with the screw 29.
The new indoor door frame 2 is attached by overlapping the left and right vertical frames and the upper and lower frames with the screws 35 on the indoor web walls 16 of the left and right vertical frames and the upper and lower frames of the existing door frame.

[0009]

After the steel anchor having a substantially L-shaped cross section having a mounting piece is screwed to each of the outdoor web walls of the existing door frame, the new outdoor door frame is fitted from the outdoor side, and the anchor mounting piece is newly inserted. While screwing the flange of the outdoor door frame, the left and right vertical frame of the existing door frame and the indoor web wall of the upper frame, with a plate-shaped liner made of synthetic resin interposed,
The new outdoor door frame is securely attached to the existing door frame because the base member of each frame of the new outdoor door frame is screwed directly to the inner web wall of the lower frame to attach the new outdoor door frame. Next, the new indoor door frame is fitted from the indoor side, and the left and right vertical frames and the upper and lower frames of the new indoor door frame are screwed on the base piece of the new outdoor door frame screwed to the existing door frame, so that the new indoor door frame is screwed. At the portion where the liner is interposed, the new outdoor door frame and the new indoor door frame are firmly fixed to the existing door frame in a state of being joined by the three members.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on examples with reference to FIGS. FIGS. 1 to 3 show a state in which a new metal door frame made of steel is attached to an existing aluminum or steel door frame at the entrance of the entrance of the building frame.

The existing door frame S made of steel is fixed to the building frame with an anchor or the like. In the metal door frame remodeling method of this embodiment, the existing door frame S is left as it is without being removed, and the existing door frame S is provided with a new outdoor door frame 1 and a new indoor door frame 2. Specifically, a new outdoor door frame 1 and a new indoor door frame 2 which are formed in advance in a factory or the like.
Are fitted from the outside and the inside of the room, respectively, to attach a new door frame. Then, a hinge is attached to this new door frame so that the door D opens and closes outside the room.

The existing door frame S has a frame structure including left and right vertical frames 7, 7 and upper and lower frames 8, 9, and each frame 7, 7, 8, 9
Is basically a channel shape that opens in the outer peripheral direction of the frame, and a step wall 11 for a door contact is formed on the inner side of the frame on the indoor side. Existing door frame S
Has an outdoor web wall 15 and an indoor web wall 16 higher than the step wall 11.

Each of the left and right vertical frames and the upper and lower frames constituting the new outdoor door frame 1 is formed with a stepped portion 17 abutting on the stepped wall 11 of the existing door frame S. A flange 21 is provided at the front end of the outdoor side from the portion 17, and a base piece 19 is provided on the indoor side from the step portion 17.

Each of the left and right vertical frames and the upper and lower frames constituting the new interior door frame 2 is provided with a flange 22 having a double-sided structure in which the outdoor end is inverted and bent, and the lower frame has a double-layered structure. Inclined flange 39 is provided.

When attaching the new outdoor door frame 1 and the new indoor door frame 2 constituting the new door frame to the existing door frame S,
First, a new outdoor door frame 1 formed in advance with a frame is fitted and attached to an existing door frame S from the outdoor side. In this case, first, a steel anchor 3 having a substantially L-shaped cross section is
Each frame 7 constituting the outdoor web wall 15 of the existing door frame S,
7 and 8 and 9 so that the front end thereof is in contact with the stepped wall 11 and fixed with screws 23, and then the left and right vertical frames and the upper and lower frames of the new outdoor door frame 1 are attached to the mounting piece 25 of the anchor 3. 21 is stopped with a screw 27. At this time, the step 17 of the new outdoor door frame 1 is brought into contact with the step wall 11 of the outdoor web wall 15.

Next, the indoor web wall 16 of the existing door frame S
One or more synthetic resin plate-shaped liners 5 are interposed between the left and right vertical frames 7, 7 and the upper frame 8, and the base piece 19 of the new outdoor door frame 1 is fixed with screws 29, The lower frame 9 is directly provided on the lower frame portion 19 without the interposition of a liner.
And the new outdoor door frame 1 is attached to the existing door frame S. In this mounting state, the space 20 is held against the outdoor web wall 15, and a reinforcing back plate 33 for screwing the hinge of the door D is attached to the new outdoor door frame 1 in this space 20. Further, the steel anchor 3 fixed to the lower frame 9 of the existing door frame by the screw 23 has a stepped shape capable of withstanding the load of a pedestrian or a passing vehicle.

Thereafter, the new indoor door frame 2 is fitted, and the door contact 6 is mounted on the step portion 17 and the fitting groove 37 formed near the new indoor door frame 2. Then, as described above, the base piece 19 of the new outdoor door frame 1 is
In this state, the left and right vertical frames and the upper and lower frames of the new indoor door frame 2 are overlapped with the base piece 19 and fixed to the indoor web wall 16 with screws 35, whereby the new indoor door frame 2 is attached ( See each figure.) In addition, the sealing material 41 is filled at the edges of the flanges 21 and 22, and the space between the existing door frame S and the new door frame is sealed.

The renovation method of the metal door frame according to the embodiment of the present invention has been described above. When the new outdoor door frame 1 is fitted into the existing door frame and attached, the new outdoor door is attached to the step wall 11 of the outdoor web wall 15. When the stepped portion 17 of the frame 1 is brought into contact, positioning at the time of attachment can be facilitated. Further, since the lower frame constituting the new interior door frame 2 is provided with the double-structured inclined flange 39 whose end is inverted and bent, wheels such as a bogie are not caught and do not become an obstacle when going in and out.

[0019]

As explained above, according to the present invention, all the anchors, new indoor / outdoor door frames and the like are mounted by screws, so that unlike the conventional remodeling method, there is no need to weld. As a result, it is possible to eliminate the occurrence of sparks due to welding at the site construction, to ensure safety during installation,
As in the prior art, since the new outdoor door frame and the new indoor door frame are not subjected to joint welding between the butted ends,
There is no difficulty due to the welding work, so that the working efficiency can be improved and the construction period can be shortened.

Further, a steel anchor having a substantially L-shaped cross section having a mounting piece is screwed and fixed to the outdoor web wall of the existing door frame, and then the new outdoor door frame is mounted on the step wall of the existing door frame. The new outdoor door frame is fitted from the outdoor side so that the stepped portion abuts. At least one synthetic resin plate-shaped liner is interposed between the left and right vertical frames of the frame and the indoor web walls of the upper frame, and the left and right vertical frames of the new outdoor door frame and the base piece of the upper frame are fixed with screws. The new outdoor door frame is attached to the existing door frame by screwing the base piece of the lower frame of the new outdoor door frame directly to the indoor web wall of the lower frame of the existing door frame. Space between the outdoor door frame No longer can firmly attached to the existing door frame a new outdoor door frame.

Further, as described above, after the new outdoor door frame is attached to the existing door frame, the new indoor door frame is fitted from the outside, and the new outdoor door frame is screwed to the indoor web wall of the existing door frame. The left and right vertical frames and the upper and lower frames of the new indoor door frame are overlapped on the base piece of each frame, and are fixed to the left and right vertical frames of the existing door frame and the indoor web walls of the upper and lower frames with screws. Installation work of the door frame can be easily performed. In this case, on the indoor web wall of the existing door frame,
After overlapping the liner and the left and right vertical frame of the new outdoor door frame and the base piece of the upper frame with screws and then further overlapping on it,
Since the left and right vertical frames and the upper frame of the new indoor door frame are fixed with screws, the new outdoor door frame and the new indoor door frame can be securely and stably attached to the existing door frame in a three-piece combined state.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a reformed metal door frame according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of the same.

FIG. 3 is an exploded perspective view of a vertical frame portion showing a main part.

FIG. 4 is a partial cross-sectional view of a reformed metal door frame illustrating a conventional example.

[Explanation of symbols]

 S Existing door frame 1 New outdoor door frame 2 New indoor door frame 3 Anchor 5 Liner 6 Per door 7 Vertical frame of existing door frame 8 Upper frame of existing door frame 9 Lower frame of existing door frame 11 Step wall of existing door frame 15 Outdoor web wall of existing door frame 16 Indoor web wall of existing door frame 17 Step portion of new outdoor door frame 19 Base piece of new outdoor door frame 21,22 Flange 23,27,29,35 Screw 25 Anchor mounting piece

──────────────────────────────────────────────────続 き Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E06B 1/56-1/60

Claims (1)

(57) [Claims] 1. An existing door frame having an outdoor web wall and an indoor web wall having a step wall for contacting a door on the inner peripheral surface of each of the left and right vertical frames and the upper and lower frames. In the remodeling method of a metal door frame in which the formed new outdoor door frame and the new indoor door frame are fitted from the outdoor side and the indoor side, respectively, and the new door frame is attached, a substantially L-shaped steel having a mounting piece is provided. Anchors are fixed to the left and right vertical frames of the existing door frame and the outdoor web walls of the upper and lower frames by screws, and then the new outdoor door frame provided with flanges, step portions, and base pieces is connected to the step wall of the existing door frame. First, the left and right vertical frames of the new outdoor door frame and the flanges of the upper and lower frames are screwed to the mounting pieces of the anchor on the outdoor side, and the existing door is inserted. Left and right of the frame At least one synthetic resin plate-like liner is interposed between the indoor web walls of the frame and the upper frame, and the left and right vertical frames of the new outdoor door frame and the base piece of the upper frame are screwed while the existing door frame is screwed. Attach the new outdoor door frame to the existing door frame by screwing the base piece of the lower frame of the new outdoor door frame directly to the indoor web wall of the lower frame. The left and right vertical frames and upper and lower frames of the new door frame are superimposed on the base portion of the new outdoor door frame screwed to the indoor web wall of the existing door frame. A metal door frame reforming method characterized in that a new indoor door frame is attached by screwing to a wall of an indoor web.