JPS606139Y2 - Door frame for replacement door - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a door frame for a replacement door that can be attached to a building using an existing door frame without removing the existing door frame from the building.

In particular, the present invention constructs a door frame for a replacement door using an inner and outer set of frame members, and has a special shape that allows the entire frame to rotate like a hinge when fixing the inner and outer frame members to the existing frame. It is characterized by the use of brackets.

When a metal door attached to a building becomes old or its design becomes obsolete, it becomes necessary to replace the existing door with a new door frame.

In this case, conventionally, the existing door frame (called the existing frame) is buried in the concrete wall by removing the existing frame from the building by chiseling, and then the replacement door is removed. Insert the original door frame (called a replacement frame),
Concreting was being done again.

However, this type of conventional method requires a lot of work to chise and re-pour the concrete wall, so it takes many days and costs a lot of work.

In particular, since replacement doors are used to replace existing doors that are used on a daily basis, the conventional type, which takes several days to replace, is inconvenient to enter and exit during the work period, and is difficult for security reasons. Problems may occur, which is not desirable.

The present invention was proposed to solve the above-mentioned drawbacks of the conventional type, and its purpose is to install a replacement frame on the existing frame via a bracket without removing the existing frame from the building. To provide a new door frame for a replacement door that eliminates the need for chiseling and concrete pouring work during installation by fixing the door frame.

The present invention will now be explained in detail based on illustrated embodiments.

FIG. 1 shows a first embodiment of the present invention, in particular only the frame portion thereof is shown.

Of course, when fixing the replacement frame to the existing frame, it is not limited to the strict structure, and the same structure can be adopted for the upper frame or the lower frame, and only the frame material in either part can be configured according to the present invention. ,
It is also possible to have a different configuration for other frame materials.

In the figure, a is an existing frame fixed to the building side, 1 is a bracket welded on this existing frame a, and 2 is an outer frame fixed to the outdoor side of this bracket 1 (the side where the replacement door opens) ,3
Similarly, an inner frame is fixed to the indoor side (the side where the replacement door closes), and the outer frame 2 and the inner frame 3 form a replacement frame that covers the existing frame a (and the bracket 1).

The bracket 1 consists of a board 11 welded to the existing frame a, an outer frame mounting plate 12 fixed to this board 11, and an inner frame mounting plate 13 rotatably attached to the end of the outer frame mounting plate 12. Two to three pieces are fixed to each frame material of the existing frame.

The board 11 is, for example, formed of a member with a crank-shaped cross section, and is welded to a part of the outer corner of the existing frame a.

The tip of the board 11 protrudes toward the outdoor side from the outer wall surface of the existing frame a, and one end of a substantially U-shaped outer frame mounting plate 12 is welded to this tip.

(Note that it is also possible to form this substrate 11 and the outer frame mounting plate 12 from one member.

) The other end of the outer frame mounting plate 12 is folded back from the tip of the base plate 11 and extended toward the indoor side, reaching approximately the center of the existing frame a.

An inner frame attachment plate 13 is attached to an end of the outer frame attachment plate 12 via a support shaft 14 .

The inner frame mounting plate 13 has an abbreviated shape as a whole, and its tip is welded to the inner wall surface of the existing frame a.

The outer frame 2 covers the substrate 11 on which the bracket 1 is placed and the outer frame mounting plate 12, and screws 2 are attached to the outer frame mounting plate 12.
It is fixed using 1.

One end of this outer frame 2 is in contact with the outer wall surface of the existing frame a, while a door stop plate 22 is connected to the other end.

Also, on the indoor side of the door stop plate 22, there is a connecting plate 23 with the inner frame 3.
are integrated.

The inner frame 3 is made of a frame material having a rectangular cross section, and is fixed to the inner frame mounting plate 13 using screws 31 in a state that covers the inner frame mounting plate 13.

Further, the outdoor end of the inner frame 3 is attached to the connecting plate 23 of the outer frame 2 with screws 32.

The door frame of this embodiment has the above-mentioned configuration. Next, a method for attaching this door frame to a building (an existing frame) will be explained.

First, the bracket 1 is assembled to the back surface of the outer frame 2 using screws 21 in a factory or the like.

In this case, an appropriate number of brackets 1 are attached to the outer frame 2, which is a long object, at intervals according to its length.

On the other hand, regarding existing doors installed on the building side,
Remove the door body, hinges, etc., leaving only the existing frame a.

In this case, if the existing frame has deteriorated significantly, use foundation studs or the like to firmly attach the existing frame to the building side so that the replacement frame can be held securely.

In this state, attach the outer frame 1 with the bracket 1 attached to the existing frame a
The board 11 of the bracket 1 is placed on a part of the outdoor corner of the existing frame a, and the two are welded together.

This welding work cannot be done from the outdoor side of the existing frame a because the outer frame 1 gets in the way, so it is done from the indoor side, but even in that case, the inner frame mounting plate 13 of the bracket 1 will get in the way. Therefore, as shown in FIG. 1, the inner frame mounting plate 13 is rotated from the support shaft 14 toward the outdoor side to secure a work space.

After the welding between the substrate 11 and the existing frame a is completed, the inner frame mounting plate 13 is rotated toward the indoor side, and its end portion is welded to the inner wall surface of the existing frame a.

Thereafter, as shown in Fig. 2, the inner frame 3 is placed on the inner frame mounting plate 13, and both are fixed with screws 31, and the inner frame 3 is screwed to the outer frame 2 to complete the installation of the replacement frame. .

Next, a second embodiment shown in FIGS. 3 to 5 will be described.

In this second embodiment, a bracket 1 having a shape different from that of the first embodiment is used, and an outer frame 2 is provided with a tapered part for adjusting the dimension with respect to an inner frame 3.

In the second embodiment, the base plate 11 of the bracket 1 has a crank-shaped cross section and is welded to the door stop portion of the existing frame a.

The outdoor end of the board 11 protrudes outward from the outer wall surface of the existing frame a, and an outer frame mounting plate 12 having a U-shaped cross section is attached to this part.
is welded.

On the other hand, the inner frame mounting plate 13 is attached to the substrate 11 side, and is rotatably attached to a support shaft 14 fixed (welded) to the substrate 11 (see FIG. 4).

The outer frame 2 has approximately the same configuration as the first embodiment, but the doorstop plate 22 is made wider than the first embodiment, and the doorstop plate 22 is provided with an incline inclined toward the existing frame a side. A tapered part 24 is provided in series, and a connecting plate 2 for the inner frame is attached to this tapered part 24.
3 in a row.

Note that the inner frame 3 used is the same as that in the first embodiment.

In order to attach the door frame of the second embodiment having such a configuration to an existing frame, the bracket 1 is attached to the outer frame 2 in advance as in the first embodiment.

That is, the outer frame mounting plate 12 having a U-shaped cross section is applied to the back surface of the outer frame 2, and both are fixed with screws 21.

In this state, the outer frame 2 is fitted inside the existing frame a, and the substrate 11 of the bracket 1 is welded to the existing frame a.

In this case, the welding position is adjusted by moving the substrate 11 back and forth on the existing frame a so that the end of the outer frame 2 reliably contacts the surface of the existing frame a.

Further, in the welding work, the inner frame mounting plate 13 of the bracket 1 is rotated toward the outdoor side to secure a work space, as in the first embodiment.

Thereafter, the inner frame mounting plate 13 is rotated toward the indoor side, and its end is welded to the existing frame a.

Furthermore, the inner frame 3 is attached to the inner frame mounting plate 13 and the connecting plate 23 of the outer frame 2 using the screws 31 and 32. At this time, the outdoor end of the inner frame 3 is attached to the tapered part of the outer frame 2. By shifting along 24, the mounting position of the inner frame 3 is adjusted.

That is, as shown in FIG.
4, even if the mounting position of the inner frame 3 changes, a gap is prevented from forming between the inner frame 3 and the outer frame 2.

As shown in the above embodiments, according to the present invention, it is possible to install a new replacement door without removing the existing frame from the building, so the installation work can be done quickly and easily. .

Furthermore, since the replacement frame of the present invention is made of two parts, the outer frame and the inner frame, there is an advantage that the existing frame can be completely covered with the replacement frame.

In particular, in the present invention, the bracket is attached to one of the replacement frames in advance at a factory or the like, so on-site attachment work is simplified.

That is, conventionally, as in the idea described in Japanese Utility Model Application Publication No. 52-24343, a mounting plate removably engaged with a frame is rotated around its mounting portion, and the mounting plate and wall are connected to each other. Techniques for fixing the door have also been proposed, but if such technology is used for a replacement door like the one proposed in this invention, the replacement door will have many parts such as the inner frame, outer frame, and even the fixing brackets for both. Therefore, if each part is separated as in the conventional technology, the installation work on site becomes very troublesome.

However, in the door frame of the present invention, the bracket is integrated with the outer frame in advance as described above, and the bracket itself is also integrated with the outer frame mounting plate and the inner frame mounting plate via the spindle, so the conventional door frame No such inconvenience will occur.

In addition, the bracket has a special shape that allows a part of it (in the example shown, the inner frame mounting frame) to rotate, making it easy to weld the bracket to the existing frame, even if the bracket is already attached to the replacement frame. can be done.

Furthermore, as in the second embodiment, when a part of the taper for dimension adjustment is provided at the joint between the outer frame and the inner frame, even if there is a dimension misalignment between the frame and the bracket, the effect can be adjusted in a good manner. There is also.

Note that the present invention is not limited to the illustrated embodiment; for example, the outer frame and the inner frame may not be directly screwed together, but may be fixed only to a bracket, and the two may simply be butted together. can.

Furthermore, when attaching the bracket and the existing frame, or the bracket and the outer frame and inner frame, the attachment is not limited to the illustrated embodiment, and it is also possible to use screw fixing welding or other means as appropriate. .

[Brief explanation of the drawing]

1 and 2 are sectional views showing a first embodiment of the door frame for a replacement door according to the present invention, with FIG. 1 showing the door frame in the middle of assembly, and FIG. 2 showing the completed state. Fig. 3 is a sectional view of the second embodiment of the present invention, Fig. 4 is a perspective view of the bracket in the second embodiment, and Fig. 5 is a perspective view showing the state of connection between the outer frame and the inner frame in the second embodiment. It is a diagram. 1... Bracket, 11... Board, 1
2... Outer frame mounting plate, 13... Inner frame mounting plate, 14... Support shaft, 2... Outer frame, 21
...screw, 22...door stop plate, 23.
...Connecting plate, 24... Taper part, 3.
...Inner frame, 31, 32... Screw, a...
...Existing frame.

Claims (1)

[Scope of utility model registration request] An outer frame mounting plate and an inner frame mounting plate are rotatably connected via a support shaft to form a bracket, and the outer frame mounting plate portion is fixed to the inner surface of the outer frame to form a bracket. By creating an integrated outer frame, this outer frame is fixed to the existing frame that remains in the building via brackets, and the inner frame mounting plate is rotated around the support shaft toward the surface of the existing frame. A door frame for a replacement door, characterized in that it is fixed to an existing frame, the inner frame is fixed to the inner frame mounting plate, and the existing frame is covered with a replacement frame consisting of the outer frame and the inner frame. .