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 door frame installation method. [Background technology]

[0002] In recent years, renovating a used property (house or apartment) to suit your lifestyle and layout has become popular. One of the reasons for this popularity, especially among younger generations, is that it is cheaper than buying a new property.

[0003] One issue 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 provide ample space per room have become more popular than the number of rooms, and in older properties, the floor plan is often divided into smaller sections with a large number of rooms. For this reason, when renovating, walls are sometimes demolished and rooms are connected with doors.

[0004] Furthermore, even in newly built properties for families, there are often rooms that become surplus in the future when children move out, etc. In these cases, there is a need to renovate the property 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, vertical base frames at the door end and hanging end are made larger than the general height dimension from floor to ceiling of the area to be installed, and door stops are attached to these vertical base frames. These are then transported to the door installation site at the appropriate time, and the exact dimensions after work such as replacing the floor or ceiling is measured. Each component 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 to the outer periphery of the wall base and 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, and the door is manufactured and hung on the vertical base frames. [Prior art documents] [Patent documents]

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

[0008] When renovating a house to install a door, it is first necessary to break down the wall where the door will be installed and create an opening. However, this inevitably damages the wallpaper on the edge of the wall around the opening. Therefore, before installing the door, the damaged wallpaper must be replaced, which increases the renovation costs.

[0009] Furthermore, doors are installed by attaching them to a door frame, which requires the installation of a new structure to support the door. Specifically, the conventional method involves assembling pillars into a frame-like structure inside the wall, and then fixing the door frame to this structure to support the door. However, due to the current global situation and rising transportation and processing costs, the prices of building materials have risen and there is a continuing lack of prospect of obtaining them. Therefore, the traditional door installation method using the above-mentioned structure means that renovations take several days or more and are very costly.

[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 was made in consideration of these circumstances, and one of its exemplary purposes is to provide a new door frame device and door frame construction method that can reduce renovation costs, and that produces a beautiful finished product that is in no way inferior to that produced by conventional construction methods. [Means for solving the problem]

[0012] To solve the above-mentioned problems, we have devised a door frame device. The door frame supports, consisting of a first vertical support, a second vertical support, and a first horizontal support suspended between the first and second vertical support, are installed between the wall materials of a wall having an opening for installing a door. The door frame is connected and fixed to these door frame supports, and is formed by sandwiching the wall from the front and back in a state that conceals cross-damaged parts of the wall materials on the left, right, and upper walls of the opening. The door frame is composed of a first vertical door frame, a second vertical door frame, and a horizontal door frame placed above the first and second vertical door frames so as to span between them. This invention allows doors to be installed to walls at low cost, and produces a beautiful finish that is in no way inferior to conventional construction methods.

[0013] The door frame support may be adjustable in height, allowing the door to be installed flexibly by fixing the door frame support in accordance with 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 easy to fix the door frame support at the installation site.

[0015] The width of the door frame support may be variable, allowing for flexible installation of doors, such as swing doors and sliding doors, depending on the installation site conditions.

[0016] The height adjustment mechanism for 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 the door frame support 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 can move 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 member at its lower end, the second horizontal support member being disposed between the first vertical support member and the second vertical support member, thereby increasing the strength of the door frame support member.

[0019] The door frame has a roughly U-shaped cross section formed by sandwiching the edge wall of the opening from the front and back, which allows damaged wallpaper at the end of the wall material in the opening to be covered up, and creates a clean straight line at the boundary between the door frame and the existing wallpaper without having to replace the wallpaper and cut it along the door frame.

[0020] This is a construction method for creating an opening in an existing wall and installing a door frame. A door frame support is installed and fixed between the wall materials to support the door frame. A door frame with a roughly U-shaped cross section is attached to the door frame support, which sandwiches the wall at the edge of the opening from the front and back. The door frame covers and hides any damaged cross sections in the wall materials 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 present invention between a manufacturing method, a manufacturing device, a processing method, etc. are also valid as aspects of the present invention. [Effects 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 clean, 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 to install a new door is formed without changing the existing wall structure. [Brief explanation of the drawings]

[0023] [Figure 1] 1 is a schematic diagram of a wall with an opening formed therein for mounting a door. FIG. [Figure 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. FIG. [Figure 3] 1 is an explanatory view of the assembly of the inverted L-shaped movable support part and the first horizontal support 50 of the door frame support of the present invention, with a partial perspective view. [Figure 4] 1 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. [Figure 5] FIG. 10 is a schematic view of the rear side of the first vertical door frame. [Figure 6] 1 is a partially perspective view illustrating the assembly of a door frame of the door frame device of the present invention. [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 INVENTION

[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 will be given the same reference numerals, and redundant explanations will be omitted where appropriate. Furthermore, 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] Figure 1 is a schematic diagram of a wall with an opening for attaching a door. In the apartment shown in Figure 1, the wall separating the rooms has a double structure consisting of 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 designated W3 and W4, respectively.

[0026] A wall opening W8 was created by destroying the planned location for a new hinged door (not shown) to be installed in the renovation. When opening this wall opening W8, it was inevitable that tools and other tools would come into contact with the wallpaper (wallpaper) pasted on the surfaces of the front wall W1 and rear wall W2, leaving the wallpaper around the wall opening W8 damaged (damaged wallpaper area W7 is shown in Figure 1). Furthermore, not only was the wallpaper pasted on the wall, but the edge of the wall material around the edge of the wall opening W8 was 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] Figure 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 so as to bridge the gap between them, and a second horizontal support 55 provided below them. In Figure 2, the upper edges W3 and W4 of the ceilings of the front wall W1 and the rear wall W2 are indicated by chain 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 top end of the rectangular parallelepiped 12 within 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 formed from 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 made up 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 wall opening W8. 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 than the upper fixed part main body 11, 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 screws D1 or nails passed through the insertion holes H1 from the wall opening W8 side. The inverted L-shaped movable support body 18 and support pieces 19 may be made of wood, or may be formed from thin aluminum alloy plates or the like so that they are hollow inside.

[0033] The lower fixed part L14 is a roughly inverted T-shaped member, like the upper fixed part L10 turned upside down. That is, the lower fixed part L14 is formed by a rectangular parallelepiped lower fixed part main body 15 and a lower fixed plate 16 that extends horizontally on the floor within the space S10 between the front and rear walls of the lower end of the lower fixed part L14. Furthermore, an insertion hole H3 through which a screw D3 can be inserted is formed in the 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 it is hollow inside.

[0034] Next, the first horizontal support 50 will be described with reference to Figure 3. The first horizontal support 50 is a member in the shape of a square tube with a rectangular cross section, and has an insertion hole H2 for a screw D2 formed in its lower side. 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 have a hollow interior.

[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 portion 17 that can move up and down on the first vertical support 40 and the support piece 29 of the inverted L-shaped movable support portion 27 that can move up and down on the second vertical support 70, and as will be described later, 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 Figure 2. The second horizontal support 55 is a plate-shaped member. At each end of the second horizontal support 55, there is provided one insertion hole H3 for a screw D3. The second horizontal support 55 is made of wood, lightweight aluminum alloy, or the like, and its dimensions are adjusted with tools according to the on-site conditions.

[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 wall 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 that 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 longitudinal height of the front inner wall 102 corresponds to the height dimension of the wall opening W18. The front wall 104 also has a front wall upper edge 106 that extends the wall surface 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 located above the first vertical door frame 101 and the second vertical door frame 201, bridging 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 located 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 longitudinal height of the rear inner wall 103 corresponds to the height dimension of the wall opening W18. The rear wall 105 also 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 located above the first vertical door frame 101 and the second vertical door frame 201, bridging the gap between them.

[0042] The first vertical door frame 101 is formed by the first vertical front wall door frame A101 and the first vertical rear wall door frame B101, sandwiching the left end wall of the wall opening W8 from the front and back, 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 that is surrounded in the vertical longitudinal direction by the edges of the front inner wall 102 and 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 along the entire height direction, and on the surface of 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, insertion holes H4 provided in each of the front inner wall back panel A108 and the rear inner wall back panel B108 are lined up at intervals in the vertical direction. The door frame line groove P500 can be connected and fixed to the first vertical support body 40 using screws D4, nails, etc. (The assembly method using connection and fixation is shown in Figure 6).

[0045] The door stop liner 400 shown in Figure 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 that are driven into the door frame line groove P500. The rear convex liner portion 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 in place.

[0046] In the conventional method, the liner for stopping 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 peripheral wall of the wall opening W8 from the front and rear, and the width of the door frame line groove P500 varies depending on the width of the existing wall. By joining a 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 width of the door frame line groove P500. At actual construction sites, several different widths of Liner Packing 555 will be prepared in advance.

[0047] Next, we will explain the second vertical door frame 201. 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 roughly U-shaped cross section that is formed by the second vertical front wall door frame A201 and the second vertical rear wall door frame B201 so as to sandwich the right end wall of the wall opening W8 from the front and back. Detailed explanation of each part of the second vertical door frame 201 will be omitted as it would overlap with the explanation of the first vertical door frame 101. Note that the second vertical door frame 201 is not shown in Figures 4 and 5. Figure 7 shows the state after installation on the wall.

[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. It is a long, approximately U-shaped member with a cross section corresponding to the width dimension of the wall opening W8. That is, the horizontal door frame 300 is a long, approximately U-shaped member formed by the horizontal front wall door frame A300 and the horizontal rear wall door frame B300, which sandwich the wall above the wall opening W8 from the front and rear. Insertion holes H5, similar to those of the first vertical door frame 101 and the second vertical door frame 201, are horizontally spaced apart in a groove formed at the top facing the inside of the wall opening W8. The insertion holes H5 are arranged horizontally at intervals, and the horizontal door frame 300 is fixed to the first horizontal support 50 with screws D5 or nails through the insertion holes H5. Since the explanations for the first vertical door frame 101 and the second vertical door frame 201 overlap, a detailed explanation of each part of the horizontal door frame 300 will be omitted. 4 and 5, the horizontal door frame 300 is omitted from the illustration. The horizontal door frame 300 when assembled into the door frame device is shown in FIG. 6, and the state after installation on the wall is shown in FIG.

[0049] (How to use the door frame device) Next, we will explain how to use the door frame device. 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] (Installation method of 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 so that they face each other between the front wall W1 and the rear wall W2 on the left and right sides of the wall opening W8.

[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 then 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 and 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, using screws D1 or nails through insertion holes H1 from the wall opening W8 side.

[0054] Finally, screws D2 or nails are passed through the insertion holes H2 of the first horizontal support 50 to fix it to the support pieces 19 and 29, thereby connecting and fixing the first vertical support 40, the second vertical support 70, and the first horizontal support 50 (see Figure 3).

[0055] Furthermore, a second horizontal support 55 is placed on the floor of the opening W8 on top of the lower fixing plate 16 of the first vertical support 40 and the lower fixing plate 26 of the second vertical support 70, and 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. Note that the door frame support 30 may be installed without using the second horizontal support 55, depending on the site conditions.

[0056] (How to install the door frame) Next, referring to Figure 6, we will explain how to attach a door frame according to the present invention to a door frame support 30 installed between the front wall W1 and the rear wall W2 on the left and right sides of the opening W8. The door frame according to the present invention is a roughly inverted U-shaped frame formed by sandwiching the walls from the front and back, and can be installed easily to match the width of the existing wall. When attaching the door frame to the edge of the opening W8, the new wall wallpaper will not be damaged, and a clean straight line will be 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 a roughly 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.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 clean, straight line. Therefore, when installing a new door, there is no need to replace the wallpaper in the damaged area 7, which reduces construction costs.

[0058] Damaged section W7 of the cross in the front wall is shown in Figure 1. When forming opening W8, the wall material around the edge of the opening was also damaged and rattled, 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 clean, straight boundary with the existing wall cross.

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

[0060] As described above, according to the present invention, an opening can be freely created in the wall where a door is to be installed, and the door frame can be firmly fixed without the need to create a separate 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 door frames installed using conventional construction methods. Furthermore, installing the door frame in this invention does not require particularly advanced skills, making it possible to provide a door frame device that meets the needs of people who do their own home renovations. [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 fixing plate R24--(2nd) lower fixing part, 25--(2nd) lower fixing part body, 26--(2nd) lower fixing plate 27--(Second) inverted L-shaped movable support part 28--(Second) 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) insertion hole H5--(horizontal door frame) insertion 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 anterior wall, 107--upper edge of posterior wall, A108--Anteromedial wall back plate, B108--Posterior medial wall back plate P500--door frame line groove, 400--door stop 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) anterior wall, 206--(Second) upper edge of the anterior wall 300--Horizontal door frame, A300--Horizontal front wall door frame, B300--Horizontal rear wall door frame 301--Front side wall of horizontal door frame

Claims

1. The door frame support is comprised of a first vertical support, a second vertical support, and a first horizontal support that is installed between the first vertical support and the second vertical support, and is installed between the wall surface materials of a wall that has an opening for attaching a door; first and second vertical door frames that are connected and fixed to the door frame support and are formed by sandwiching the left and right walls and the upper wall of the opening from the front and back so as to cover up any cross damage in the wall surface materials; and a horizontal door frame that is arranged above the first and second vertical door frames so as to span the gap between them. The door frame support has a variable height.

2. The door frame support is comprised of a first vertical support, a second vertical support, and a first horizontal support that is installed between the first vertical support and the second vertical support, and is installed between the wall surface materials of a wall that has an opening for attaching a door; first and second vertical door frames that are connected and fixed to the door frame support and are formed by sandwiching the left and right walls and the upper wall of the opening from the front and back so as to cover up any cross damage in the wall surface materials; and a horizontal door frame that is arranged above the first and second vertical door frames so as to span the gap between them. The door frame support has a variable width that can be adjusted to fit the width of the wall opening.

3. The door frame support is comprised of a first vertical support, a second vertical support, and a first horizontal support that is installed between the first vertical support and the second vertical support, and is installed between the wall surface materials of a wall that has an opening for attaching a door; first and second vertical door frames that are connected and fixed to the door frame support and are formed by sandwiching the left and right walls and the upper wall of the opening from the front and back so as to cover up any cross damage in the wall surface materials; and a horizontal door frame that is arranged above the first and second vertical door frames so as to span the gap between them. The door frame device allows the height of the first horizontal support to 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 that can move and adjust the first vertical support and second vertical support up and down and is fixed thereto.

4. The door frame device according to claim 1 or 2, wherein the door frame support is fixed between the wall members by being braced in the height direction.

5. The door frame device according to claim 1, wherein the height of the door frame support is adjustable by a height adjustment mechanism provided in the first vertical support and / or the second vertical support.

6. 6. The door frame device according to claim 5, wherein the height adjustment mechanism is a feed screw.

7. The door frame device according to claim 1 or 2, wherein the door frame support further comprises a second horizontal support member at a lower end thereof, the second horizontal support member being bridged between the first vertical support member and the second vertical support member.

8. The door frame support is comprised of a first vertical support, a second vertical support, and a first horizontal support that is installed between the first vertical support and the second vertical support, and is installed between the wall surface materials of a wall that has an opening for attaching a door; first and second vertical door frames that are connected and fixed to the door frame support and are formed by sandwiching the left and right walls and the upper wall of the opening from the front and back so as to cover up any cross damage in the wall surface materials; and a horizontal door frame that is arranged above the first and second vertical door frames so as to span the gap between them. The door frame device is composed of the first vertical door frame, the second vertical door frame, and the horizontal door frame, and is formed by sandwiching the left and right walls and the upper walls of the opening from the front and back, and its width is adjustable to match the width of the walls.

9. This is a construction method for forming an opening in an existing wall and installing a door frame, in which a variable-height door frame support that supports 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 in a state that covers and conceals the cross-damaged parts of the wall material located around the opening.

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