Door frame device and door frame construction method

Abstract

To provide a door frame device capable of attaching a door to an existing wall at a low cost and achieving a finish comparable to that by conventional construction methods.SOLUTION: A door frame device, which includes: a door frame supporting body having a first vertical supporting body, a second vertical supporting body, and a first horizontal supporting body provided between the first vertical supporting body and the second vertical supporting body and is provided between wall surface members of a wall; a first vertical door frame and a second vertical door frame that are attached to the door frame supporting body and are formed by sandwiching a wall from the front and the rear in a state of covering an end portion that is a wall surface damaged portion containing a cross of an opening made in an existing wall surface; and a horizontal door frame that which is arranged above the first vertical door frame and the second vertical door frame for bridge therebetween, forms a clean straight line at the boundary between the existing wall cross and the door frame, and forms the door frame with sufficient strength to install a new door without the need to replace the cross newly and without changing the existing wall structure.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to a door frame device and a method for constructing a door frame. [Background technology]

[0002] In recent years, renovation, which involves purchasing a used property (house or apartment) and renovating it to suit one's lifestyle and layout, has become popular. One of the reasons for the popularity of renovation, especially for the younger generation, is that it is cheaper than purchasing a new property.

[0003] One problem that arises when renovating is the floor plan. There are trends in floor plans, and it is inevitable that there will be a mismatch between the floor plans of older properties and those of more recent ones. In particular, in recent years, floor plans that allow more space per room are preferred over the number of rooms, and many older properties have floor plans that are divided into small sections and have a large number of rooms. For this reason, when renovating, walls are sometimes knocked down and rooms are connected with doors.

[0004] In addition, even in newly built properties built for families, there are often cases where rooms become surplus when children move out in the future. In these cases, there is a need to remodel by knocking down walls and connecting individual rooms with doors.

[0005] For example, Patent Document 1 discloses a door installation method for renovations that enables tall doors, which are tall from floor to ceiling, to be installed efficiently and in a very short period of time during renovations.

[0006] In this method, the vertical base frames for the door end and hanging sides are manufactured to be larger than the general floor-to-ceiling height dimension of the area to be installed, and door stops are attached to these vertical base frames. These are then transported to the site where the door will be installed at the appropriate time, and the exact dimensions are measured after work such as replacing the floor or ceiling is completed. Each part is then cut on site to match the measured dimensions. Each vertical base frame is attached to the wall base of the opening in the wall where the door will be installed, and wallpaper is applied around the outer periphery of the wall base and the vertical base frames. Door stops are then attached to each vertical base frame. The height dimension from floor to ceiling and the dimension between the vertical base frames are then measured to manufacture the door, which is then hung on the vertical base frames. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Patent Publication No. 2022-030566 Summary of the Invention [Problem to be solved by the invention]

[0008] When renovating to install a door, it is first necessary to break down the part of the wall where the door will be installed and create an opening. However, in doing so, damage to the wallpaper around the edge of the wall around the opening cannot be avoided. Therefore, before installing the door, it is necessary to replace the damaged wallpaper, which increases the cost of renovation.

[0009] In addition, the door is installed by attaching it to a door frame, but a new structure to which the door frame is attached must be installed so that the door frame can support the door. Specifically, in the past, it was common to assemble pillars into a frame inside the wall to form a structure, and then fix the door frame to this to support the door. However, due to the recent global situation and the increase in transportation and processing costs, the prices of building materials have risen and there is still a lack of prospects for obtaining them, so the traditional door installation method using the above-mentioned structure requires several days or more and is very costly when renovating.

[0010] Therefore, the inventors of the present application focused on the method of attaching door frames as a technology that can be applied to the renovation of doors in any building, whether it be a detached house or an apartment building.

[0011] The present invention has been made in consideration of these circumstances, and one of its illustrative objectives is to provide a new door frame device and door frame construction method that can reduce renovation costs, and also to produce a beautiful finished product that is in no way inferior to those produced by conventional construction methods. [Means for solving the problem]

[0012] In order to solve the above-mentioned problems, a door frame device was devised, which is composed of a door frame support consisting of a first vertical support, a second vertical support, and a first horizontal support installed between the first vertical support and the second vertical support, which is installed between the wall surface materials of a wall having an opening for attaching a door, and a door frame which is connected and fixed to these door frame supports and is formed by sandwiching the wall from the front and back in a state in which the cross damage parts of the wall surface materials formed on the left, right, and upper walls of the opening are covered and hidden. The door frame is composed of a first vertical door frame, a second vertical door frame, and a horizontal door frame which is installed above the first and second vertical door frames so as to span between them. According to this invention, a door can be attached to a wall at a low cost, and a beautiful finish that is in no way inferior to conventional construction methods can be obtained.

[0013] The door frame support may be variable in height, allowing the door to be flexibly fixed and the door frame support to be installed according to the conditions of the installation site, such as the structural ceiling height inside the wall.

[0014] The door frame support may be fixed between the wall members by bracing it in the height direction, which makes it easier to fix the door frame support at the installation site.

[0015] The width of the door frame support may be variable, allowing the door to be flexibly installed depending on the site conditions, such as a hinged door or a sliding door.

[0016] The height adjustment mechanism of the door frame support may be fixed by a feed screw, which allows the height of the door frame support to be easily adjusted after it is placed.

[0017] The door frame support may be configured so that the height of the first horizontal support is variable by connecting the first horizontal support to a movable support portion that is movable up and down and is provided on the first vertical support and the second vertical support.

[0018] The door frame support may further include a second horizontal support disposed between the first vertical support and the second vertical support at a lower end side thereof, thereby increasing the strength of the door frame support.

[0019] The door frame has a roughly U-shaped cross section formed by sandwiching the wall at the edge of the opening from the front and back. This makes it possible to cover up damaged sections of the wallpaper at the ends of the wall material in the opening, and creates a neat straight line at the boundary between the door frame and the existing wallpaper without the need to replace the wallpaper and cut it along the door frame.

[0020] This is a construction method for forming an opening in an existing wall and installing a door frame. A door frame support body for supporting the door frame is installed and fixed between the wall materials of the wall, and a door frame with a roughly U-shaped cross section formed by sandwiching the wall at the edge of the opening from the front and back is attached to the door frame support body. The door frame construction method covers and hides damaged sections of the cross-section of the wall material located around the opening, resulting in a beautiful finish that is comparable to conventional construction methods.

[0021] Any combination of the above components and any conversion of the expression of the present invention between a manufacturing method, a manufacturing apparatus, a processing method, etc. are also effective as aspects of the present invention. Effect of the Invention

[0022] According to the present invention, a door can be attached to an existing wall while keeping renovation costs down, and a beautiful straight boundary between the door frame and the existing wallpaper is formed without replacing damaged existing wallpaper around the edge of the opening and cutting along the door frame, resulting in a beautiful finish that is in no way inferior to that achieved by conventional construction methods, and a door frame with sufficient strength for installing a new door is formed without modifying the existing wall structure. [Brief description of the drawings]

[0023] [Figure 1] FIG. 1 is a schematic diagram of a wall with an opening formed therein for mounting a door. [Diagram 2] 1 is a perspective view of a state in which a door frame support of the door frame device of the present invention is installed on a wall. [Diagram 3] 1 is an explanatory diagram of an assembly of an inverted L-shaped movable support part and a first horizontal support 50 of the door frame support of the present invention. [Figure 4] 2 is a schematic front view of a first vertical door frame constituting the door frame of the door frame device of the present invention. FIG. [Diagram 5] FIG. 2 is a schematic view of the rear side of the first vertical door frame. [Figure 6] 1 is an explanatory view of assembly of a door frame of the door frame device of the present invention, which is a partially transparent view. [Figure 7] FIG. 2 is an explanatory diagram of the door frame device of the present invention attached to a wall. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] The present invention will be described below based on preferred embodiments with reference to the drawings. The same or equivalent components, parts, and processes shown in each drawing are given the same reference numerals, and duplicated descriptions are omitted as appropriate. In addition, the embodiments are illustrative and do not limit the invention, and all features and combinations thereof described in the embodiments are not necessarily essential to the invention.

[0025] Fig. 1 is a schematic diagram of a wall with an opening for attaching a door. In the apartment shown in Fig. 1, the wall separating the rooms has a double structure with a front wall W1 and a rear wall W2, and a space S10 is formed between the front wall W1 and the rear wall W2. The upper edges of the ceilings of the front wall W1 and the rear wall W2 are W3 and W4, respectively.

[0026] A wall opening W8 has been created by destroying a planned location for a new hinged door (not shown) to be installed in the renovation. When opening the wall opening W8, it is unavoidable that tools or the like will come into contact with the wallpaper (wallpaper) pasted on the surfaces of the front wall W1 and the rear wall W2, and so the wallpaper around the wall opening W8 is damaged (damaged wallpaper W7 is shown in Figure 1). In addition to the wallpaper pasted on the wall, the edge of the wall material around the edge of the wall opening W8 is also damaged in a distorted manner rather than in a straight line (damaged wall material area W5 on the front wall W1 and damaged wall material area W6 on the rear wall W2 are shown in Figure 1).

[0027] (Door frame support 30) The door frame support 30 is installed in the wall space S10 and serves to support the door frame.

[0028] Fig. 2 is a perspective view of the door frame support of the door frame device installed on a wall. The door frame support 30 is a roughly rectangular frame body, and is composed of a first vertical support 40 and a second vertical support 70 corresponding to the left and right door frame positions, and a first horizontal support 50 provided above the first vertical support 40 and the second vertical support 70 to bridge between them, and a second horizontal support 55 provided below them. In Fig. 2, the upper edges W3 and W4 of the ceiling parts of the front wall W1 and the rear wall W2 are indicated by dashed lines.

[0029] The first vertical support 40 is composed of an upper fixed part L10, an inverted L-shaped movable support part 17 that can move the upper fixed part L10 up and down, a lower fixed part L14, and a feed screw height adjustment part N1 that connects the upper fixed part L10 and the lower fixed part L14.

[0030] The upper fixed part L10 is a roughly T-shaped member consisting of a rectangular parallelepiped upper fixed part main body 11 located below, a narrow rectangular parallelepiped 12 extending upward, and an upper fixed plate 13 extending horizontally from the upper end of the rectangular parallelepiped upper fixed part main body 11 into the space S10 between the front and rear walls. The rectangular parallelepiped upper fixed part main body 11 and the narrow rectangular parallelepiped 12 extending upward may be made of wood, or may be made of a thin aluminum alloy plate or the like so as to be hollow inside.

[0031] 2 and 3, the inverted L-shaped movable support part 17 will be described. The inverted L-shaped movable support part 17 is composed of an inverted L-shaped movable support part main body 18, which is a square tubular member with a rectangular cross section, and a support piece 19 extending in a direction toward the opening W8 in the wall. The inverted L-shaped movable support part 17 has an inverted L-shaped movable support part main body 18 in the shape of a square tube, which is one size larger, and can move up and down outside the narrow rectangular parallelepiped 12 extending above the upper fixed part main body 11, and can be adjusted up and down to match the height of the first horizontal support 50 connected to the support piece 19.

[0032] The inverted L-shaped movable support body 18 can be fixed to the narrow rectangular parallelepiped 12 extending above the upper fixed body 11 with a screw D1 or a nail through the insertion hole H1 from the wall opening W8 side. The inverted L-shaped movable support body 18 and the support piece 19 may be made of wood or may be made of a thin aluminum alloy plate so that the inside is hollow.

[0033] The lower fixed part L14 is a member having a roughly inverted T shape, like the upper fixed part L10 turned upside down. That is, the lower fixed part L14 is formed of a rectangular parallelepiped lower fixed part main body 15 and a lower fixed plate 16 that extends horizontally on the floor in the space S10 between the front and rear walls of the lower end of the lower fixed part main body 15. In addition, an insertion hole H3 through which a screw D3 can be inserted is formed in a portion of the lower fixed plate 16 that extends toward the opening W8. The lower fixed part main body 15 may be made of wood, or may be made of a thin aluminum alloy plate or the like so that the inside is hollow.

[0034] Next, the first horizontal support 50 will be described with reference to Fig. 3. The first horizontal support 50 is a member in the shape of a square tube with a rectangular cross section, and an insertion hole H2 for the screw D2 is formed in the lower side surface. The first horizontal support 50 may be made of wood, or may be made of a thin aluminum alloy plate or the like so as to be hollow inside.

[0035] The cross-sectional shape of the inner surface of the first horizontal support 50 corresponds to the cross-sectional shape of the support piece 19 of the inverted L-shaped movable support part 17, which can move up and down, of the first vertical support 40, and the support piece 29 of the inverted L-shaped movable support part 27, which can move up and down, of the second vertical support 70. As described below, when assembling the door frame support 30, the support piece 19 and the support piece 29 are inserted into the left and right ends of the first horizontal support 50, respectively, to connect it to the first vertical support 40 and the second vertical support 70.

[0036] Next, the second horizontal support 55 will be described with reference to Fig. 2. The second horizontal support 55 is a plate-shaped member. At each end of the second horizontal support 55, one insertion hole H3 for the screw D3 is provided. The second horizontal support 55 is formed by appropriately adjusting the dimensions with a tool according to the on-site conditions, and is made of wood, lightweight aluminum alloy, or the like.

[0037] Next, the door frame formed by sandwiching the wall from the front and back in the present invention will be described with reference to Figures 4 and 5. Figures 4 and 5 are explanatory diagrams of the first vertical door frame 101 attached to the left of the wall opening W8 of the door frame device.

[0038] The door frame is a roughly inverted U-shaped frame body formed by sandwiching the walls from the front and back, and is composed of a first vertical door frame 101 and a second vertical door frame 201 which correspond to the left and right frames of the opening W8, and a horizontal door frame 300 which is positioned above the first vertical door frame 101 and the second vertical door frame 201 so as to bridge the gap between them.

[0039] The first vertical door frame 101 is a long member with an approximately U-shaped cross section formed by the first vertical front wall door frame A101 and the first vertical rear wall door frame B101, which sandwich the left end wall of the wall opening W8 from the front and back.

[0040] The first vertical front wall door frame A101 is formed by a front inner wall 102, a front inner wall back panel A108 at its back, and a front side wall 104 extending parallel to the perpendicular front wall W1 from the end of the front inner wall 102 (in the opposite direction to the opening 18). The lengthwise height of the front inner wall 102 corresponds to the height dimension of the wall opening W18. In addition, the front wall 104 has a front wall upper edge 106 that extends further toward the ceiling. The upper end of the front wall upper edge 106 coincides with the upper end of the horizontal door frame 300 that is disposed above the first vertical door frame 101 and the second vertical door frame 201 so as to bridge the gap between them.

[0041] The first vertical rear wall door frame B101 is formed by a rear inner wall 103, a rear inner wall back panel B108 at its back, and a rear side wall 105 extending parallel to the perpendicular rear wall W2 from the end of the rear inner wall 103 (in the opposite direction to the opening 18). The lengthwise height of the rear inner wall 103 corresponds to the height dimension of the wall opening W18. The rear wall 105 has a rear wall upper edge 107 that extends the wall surface further toward the ceiling. The upper end of the rear wall upper edge 107 coincides with the upper end of the horizontal door frame 300 that is disposed above the first vertical door frame 101 and the second vertical door frame 201 so as to bridge the two frames.

[0042] The first vertical door frame 101 is formed by sandwiching the left end wall of the wall opening W8 from the front and back with the first vertical front wall door frame A101 and the first vertical rear wall door frame B101, and when sandwiching the wall from the front and back, the front inner wall back panel A108 and the rear inner wall back panel B108 are combined alternately to form a flat surface in the space inside the first vertical door frame 101.

[0043] The first vertical door frame 101, which is formed by sandwiching the left end wall of the wall opening W8 from the front and back with the first vertical front wall door frame A101 and the first vertical rear wall door frame B101, faces the inside of the wall opening W8 and forms a door frame line groove P500 in the vertical longitudinal direction surrounded by the edges of the front inner wall 102 and the edges of the rear inner wall 103 and the front inner wall back panel A108 and the rear inner wall back panel B108.

[0044] The door frame line groove P500 is formed over the entire length in the height direction, and the front inner wall back panel A108 and the rear inner wall back panel B108 are alternately combined to form the door frame line groove P500, which has insertion holes H4 on the front inner wall back panel A108 and the rear inner wall back panel B108 aligned at intervals in the vertical direction on the surface facing the wall opening W8. The first vertical support 40 can be connected and fixed through these insertion holes H4 with screws D4 or nails (the assembly method for connecting and fixing is shown in FIG. 6).

[0045] The door stop liner 400 shown in Fig. 4 serves as a cushion to stop the door, fills the gap between the door and the door frame, and also covers the screws D4 and nails driven into the groove of the door frame line groove P500. The rear convex liner part 401 at the rear of the door stop liner 400 fits vertically into the groove of the formed door frame line groove P500 and is fixed.

[0046] In conventional construction methods, the liner for holding the door is installed by fitting it into a groove of a fixed width that is pre-installed in the door frame. The door frame of the present invention is formed by sandwiching the wall of the edge of the wall opening W8 from the front and rear, and the width of the groove of the door frame line groove P500 varies depending on the width of the existing wall. By joining the liner packing 555 made of a hard and elastic material to the rear convex liner portion 401, it is possible to adapt to the variation in the groove width of the door frame line groove P500. At actual construction sites, Liner Gasket 555 will be prepared in several different widths.

[0047] Next, the second vertical door frame 201 will be described. The second vertical door frame 201 is an identical member that is symmetrical on the left and right sides to the first vertical door frame 101. In other words, the second vertical door frame 201 is a long member with a substantially U-shaped cross section that is formed by sandwiching the right end wall of the wall opening W8 from the front and back with the second vertical front wall door frame A201 and the second vertical rear wall door frame B201. Detailed description of each part of the second vertical door frame 201 will be omitted because the description will overlap with that of the first vertical door frame 101. Note that the second vertical door frame 201 is omitted from illustration in Figures 4 and 5. Figure 7 shows the state after installation on the wall surface.

[0048] Next, the horizontal door frame 300 will be described. The horizontal door frame 300 has a configuration similar to that of the first vertical door frame 101 and the second vertical door frame 201, and is a long member having a substantially U-shaped cross section corresponding to the width dimension of the wall opening W8. That is, the horizontal door frame 300 is a long member having a substantially U-shaped cross section formed by sandwiching the upper wall of the wall opening W8 from the front and rear with the horizontal front wall door frame A300 and the horizontal rear wall door frame B300. The groove formed horizontally facing the inside of the wall opening W8 at the top has insertion holes H5 formed in the same manner as the first vertical door frame 101 and the second vertical door frame 201 arranged horizontally at intervals, and the insertion holes H5 are fixed to the first horizontal support 50 with screws D5 or nails through the insertion holes H5. Since the explanation of the first vertical door frame 101 and the second vertical door frame 201 is repeated, detailed explanations of each part of the horizontal door frame 300 will be omitted. 4 and 5, the horizontal door frame 300 is omitted. The horizontal door frame 300 when assembled is shown in FIG. 6, and the state after installation on the wall surface is shown in FIG.

[0049] (How to use the door frame device) Next, a method of using the door frame device will be described. When using the door frame device, the door frame support 30 is installed between the front wall W1 and the rear wall W2 of the wall opening W8, and then the first vertical door frame 101, the second vertical door frame 201, and the horizontal door frame 300 are attached to the door frame support 30.

[0050] (How to install the door frame support 30) When installing the door frame support 30 around the wall opening W8, first install the first vertical support 40 and the second vertical support 70 in appropriate positions between the front wall W1 and the rear wall W2 on the left and right sides of the wall opening W8 so that they face each other.

[0051] Next, one end of the first horizontal support 50 is inserted into the support piece 19 of the inverted L-shaped movable support portion 17 of the first vertical support 40, and the second vertical support 70 is further moved closer to the first vertical support 40 until the support piece 29 of the inverted L-shaped movable support portion 27 of the second vertical support 70 is inserted into the other end of the first horizontal support 50, and the support piece 29 is inserted into the first horizontal support 50 to connect them.

[0052] The height of the door frame support 30 is raised by operating the feed screws of the adjustment parts N1, N2 of the first vertical support 40 and the second vertical support 70. By bracing the door frame support 30 against the ceiling (not shown), it becomes possible to firmly fix the first vertical support 40 and the second vertical support 70 in the space between the front wall W1 and the rear wall W2.

[0053] The inverted L-shaped movable support parts 17 and 27 can move up and down outside the narrow rectangular parallelepipeds 12 and 22 extending upward from the upper fixed part main bodies 11 and 21, respectively, and after setting the height of the first horizontal support 50, the inverted L-shaped movable support part main bodies 18 and 28 can be fixed to the narrow rectangular parallelepipeds 12 and 22 extending upward from the upper fixed part main bodies 11 and 21, respectively, through the insertion holes H1 from the wall opening W8 side using screws D1, nails, etc.

[0054] Finally, the first horizontal support 50 is fixed to the support pieces 19 and 29 through the insertion holes H2 with screws D2 or nails, thereby connecting and fixing the first vertical support 40, the second vertical support 70, and the first horizontal support 50 (see FIG. 3).

[0055] Furthermore, the second horizontal support 55 is placed on the lower fixing plate 16 of the first vertical support 40 and the lower fixing plate 26 of the second vertical support 70 on the floor of the opening W8, and is fastened with a screw D3 through the insertion hole H3. This connects the first vertical support 40 and the second vertical support 70 at their lower ends as well, increasing the strength of the entire door frame support 30. Depending on the situation at the site, the door frame support 30 may be installed without using the second horizontal support 55.

[0056] (How to install the door frame) Next, with reference to Figure 6, we will explain the method of attaching the door frame of the present invention to the door frame support 30 installed between the front wall W1 and the rear wall W2 of the left and right walls of the opening W8. The door frame of the present invention is a roughly inverted U-shaped frame body formed by sandwiching the walls from the front and back, and can be installed without difficulty to match the width of the existing wall. When attaching the door frame to the edge of the opening W8, the wall wallpaper is not damaged and a neat straight line is formed at the boundary between the edge of the door frame and the existing wallpaper surface. The door frame in the present invention is composed of a first vertical door frame 101 and a second vertical door frame 201, which correspond to the left and right frames of the opening W8, and a horizontal door frame 300 that is positioned above and between the first vertical door frame 101 and the second vertical door frame 201 so as to bridge the gap between them.

[0057] The first vertical door frame 101 is a long member with an approximately U-shaped cross section formed by sandwiching the left end wall of the wall opening W8 from the front and back with the first vertical front wall door frame A101 and the first vertical rear wall door frame B101. At this time, the front wall 104 of the first vertical front wall door frame A101 and the rear wall 105 of the first vertical rear wall door frame B101 cover and conceal the cross damage that occurred on the edge of the opening W8 when the wall was demolished, and function as a screen for the cross damage. Furthermore, the boundary between the door frame and the existing wallpaper forms a neat straight line, so when installing a new door, there is no need to replace the damaged wallpaper 7, which helps reduce construction costs.

[0058] Damaged section W7 of the cross in the front wall is shown in Figure 1. When forming the opening W8, the wall material around the edge of the opening was also badly damaged, with damaged section W5 of the wall material in the front wall and damaged section W6 of the wall material in the rear wall being shown in Figure 1. The front wall 104 of the first vertical front wall door frame A101 and the rear wall 105 of the first vertical rear wall door frame B101 cover these damaged areas of the wall, forming a neat, straight boundary with the existing wall cross.

[0059] In Figure 6, the door frame line groove P500, which is formed by alternatingly combining the front inner wall back panel A108 and the rear inner wall back panel B108, has insertion holes H4 provided in each of the front inner wall back panel A108 and the rear inner wall back panel B108, which are arranged at intervals in the vertical direction, and are fixed to the first vertical support body 40 by passing screws D4 or nails through the insertion holes H4 arranged in the vertical direction in the door frame line groove P500. Next, the second door frame 201 is fixed to the second vertical support 70 in the same manner, and finally the horizontal door frame 300 is fixed to the first horizontal support 50. [Industrial Applicability]

[0060] As described above, according to the present invention, an opening can be freely created wherever a door is to be installed in the wall, and the door frame can be firmly fixed without the need to create a new support structure for the door frame inside the wall. There is no need to replace damaged wallpaper, and the door frame can be installed in an existing wall at a low cost with a beautiful finish that is comparable to that of a door frame installed using conventional construction methods. Furthermore, the installation of the door frame in the present invention does not require particularly advanced skills, making it possible to provide a door frame device that meets the needs of people who remodel their homes themselves using DIY methods. [Explanation of symbols]

[0061] W1--Front wall, W2--Rear wall, W3--Top edge of front wall, W4--Top edge of back wall, W5--Damaged area of ​​front wall opening wall material, W6--Damaged area of ​​wall material of rear wall opening, W7--Cross damage, W8--Wall opening, S10--Wall space 30--Door frame support 40--first vertical support, L10--upper fixing part, 11--upper fixing part main body, 12--narrow rectangular parallelepiped, 13--upper fixed plate L14--Lower fixing part, 15--Lower fixing part main body, 16--Lower fixing plate 17--inverted L-shaped movable support part, 18--inverted L-shaped movable support part main body, 19--Support piece N1--Feed screw height adjustment part 70--second vertical support, R20--(second) upper fixing part, 21--(second) upper fixing part main body, 22--(2nd) narrow rectangular parallelepiped, 23--(2nd) upper fixed plate R24--(2nd) lower fixing part, 25--(2nd) lower fixing part body, 26--(2nd) lower fixing plate 27--(2nd) inverted L-shaped movable support part 28--(2nd) inverted L-shaped movable support part main body, 29--(2nd) support piece, N2--(2nd) feed screw height adjustment part 50---1st lateral support 55---2nd lateral support D1--(inverted L-shaped movable support fixing) screw, D2--(first horizontal support fixing) screw, D3--(Second horizontal support fixing) screw, D4--(Vertical door frame fixing) screw, D5--(Horizontal door frame fixing) screw H1--(inverted L-shaped movable support part) insertion hole, H2--(first horizontal support part) insertion hole, H3---(Second horizontal support lower fixing plate) insertion hole H4--(Vertical door frame) Through hole H5--(Horizontal door frame) Through hole 101--First vertical door frame A101--First vertical front wall door frame, B101--First vertical rear wall door frame, 102--anteromedial wall, 103--posterior medial wall, 104--front wall, 105--rear wall, 106--upper edge of front wall; 107--upper edge of rear wall; A108--Anteromedial wall back plate, B108--Posterior medial wall back plate P500--door frame line groove, 400--door stopper liner, 401--rear convex liner part, 555--Liner packing 201--Second vertical door frame A201--2nd vertical front wall door frame, B201--2nd vertical rear wall door frame, 202--(2nd) anterior medial wall, 203--(2nd) posterior medial wall, 204--(second) front wall, 206--(second) front wall upper edge 300--Horizontal door frame, A300--Horizontal front wall door frame, B300--Horizontal rear wall door frame 301--Side door frame front wall

Claims

1. A door frame device comprising a door frame support body installed between wall materials of a wall having an opening for attaching a door, the door frame support body being made up of a first vertical support body, a second vertical support body, and a first horizontal support body installed between the first vertical support body and the second vertical support body, a first vertical door frame body and a second vertical door frame body connected and fixed to the door frame support body and formed by sandwiching the walls on the left and right and above the opening from the front and back so as to cover and hide any cross damage in the wall material, and a horizontal door frame body arranged above the first vertical door frame body and the second vertical door frame body so as to span the space between them.

2. 2. The door frame apparatus of claim 1, wherein said door frame support is variable in height.

3. 2. The door frame device according to claim 1, wherein the door frame support has a variable width in accordance with the width of the wall opening.

4. The door frame device according to claim 1, wherein the height of the first horizontal support can be adjusted to match the height of the horizontal door frame located above by connecting the first horizontal support to an inverted L-shaped movable support part which can adjust the first vertical support and the second vertical support up and down and which is fixed thereto.

5. The door frame device according to any one of claims 1 to 3, wherein the door frame support is fixed between the wall materials by being braced in the height direction.

6. The door frame device according to claim 2 , wherein the height of the door frame support is adjustable by a height adjustment mechanism provided on the first vertical support and / or the second vertical support.

7. 7. The door frame assembly according to claim 6, wherein the height adjustment mechanism is a feed screw.

8. A door frame device according to any one of claims 1 to 3, wherein the door frame support further comprises a second horizontal support arranged at its lower end side between the first vertical support and the second vertical support.

9. 2. A door frame device according to claim 1, wherein the door frame formed by sandwiching the left, right and upper walls of an opening formed in an existing wall from the front and back has a width that can be adjusted to match the width of the wall.

10. This is a construction method for forming an opening in an existing wall and installing a door frame, in which a door frame support body for supporting the door frame is installed and fixed between the wall materials of the wall, and the door frame is formed by sandwiching the wall from the front and back with the door frame support body in a state where the cross-damaged portion of the wall material located around the opening is covered and concealed.

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