Door frame fixing structure

Abstract

To provide a fixing structure for door frames, which does not use welding on site and can be applied to PC structures and ALC structures.SOLUTION: A fixing structure is to fix a door frame to a skeleton forming an opening. The door frame has a first connection member 3 installed on its back face, which comprises at least one first projection piece 31 that extends in the aspect direction. The skeleton has a second connection member 4 which comprises a pair of opposing aspect pieces 42, 43. The projection piece 31 of the first connection member 3 and an aspect piece 42 that is either one of the pair of aspect pieces 42, 43 of the second connection member 4 are in an abut state and fixed to each other with a screw S1.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a fixing structure for a door frame. [Background technology]

[0002] Generally, a door frame is fixed to a structural body of a building at the construction site to form an opening that is opened and closed by a door. In addition, the door frame is often fixed by welding an element (sometimes called an anchor) provided on the back of the door frame to the structural body of the building (Patent Document 1).

[0003] However, the method of fixing door frames by welding cannot be used in construction sites where hot work is prohibited, and since welding requires skilled techniques, securing construction engineers is also an issue. Therefore, there is a need for a method of fixing door frames to the building frame structure without using welding.

[0004] In recent years, the use of so-called "fireless construction methods" to install fixtures at construction sites has been increasing in order to prevent fire accidents caused by welding and to improve construction efficiency. Several fireless construction methods have been proposed (Patent Document 2) and have been established, but most of them are only compatible with LGS (light-gauge steel frame) construction, and there has been a demand for a construction method that can be used with reinforced concrete and ALC construction. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent Publication No. 2012-87529 [Patent Document 2] Patent Publication No. 2021-134587 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0006] The present invention aims to provide a door frame fixing structure that does not require on-site welding work and is compatible with reinforced concrete and aluminum alloy construction. [Means for solving the problem]

[0007] The technical means adopted by the present invention are: A fixing structure between a door frame and a body that forms an opening, A first connecting member having at least one protrusion extending in the front direction is provided on the rear surface of the door frame, The body is provided with a second connecting member having a pair of opposing facing pieces, The protruding piece of the first connecting member and one of the pair of protruding pieces of the second connecting member are fixed with a screw in a contacting state. The fixed structure of the door frame. In one embodiment, the protruding piece is located between the pair of facing pieces.

[0008] In one embodiment, the first connecting member includes a pair of opposing protrusions, The pair of protruding pieces are located between the pair of facing surfaces.

[0009] In one embodiment, the second connecting member includes a first portion and a second portion extending perpendicular to the first portion; the second connecting member is fixed by a bolt with the second portion in contact with the body, The facing piece is formed in a raised shape on the side of the first part away from the second part, and when viewed from the front, the head of the bolt is exposed in the space between the main body and the facing piece. In one embodiment, the second portion is formed in a rising shape on the same side as the sight piece relative to the first portion, and when viewed from the front, the head of the bolt is exposed in the space between the second portion and the sight piece.

[0010] In one embodiment, a long hole extending in the projection direction is formed in the second portion, and the second connecting member is fixed by a bolt that is inserted through the long hole and fixed to the main body, When the bolt is loosened, the second connecting member is movable in the projection direction via the elongated hole and is tiltable around the axis of the bolt. In one embodiment, the second connecting member is rotatable about the axis of the bolt.

[0011] Other technical means adopted by the present invention are: A fixing structure between a door frame and a body that forms an opening, A first connecting member having a pair of opposing protrusions extending in the front direction is provided on the back surface of the door frame, The body is provided with a second connecting member having at least one facing piece, One of the pair of protruding pieces of the first connecting member and the protruding piece of the second connecting member are fixed with a screw in a contacting state. The fixed structure of the door frame. In one embodiment, the protruding piece is located between the pair of protruding pieces. [Effects of the Invention]

[0012] The door frame fixing structure of the present invention does not require on-site welding work and can be used for reinforced concrete and ALC construction.

[0013] In the door frame fixing structure according to the present invention, when the protruding piece of the first connecting member and the facing piece of the second connecting member are brought into contact with each other and connected with screws, the protruding piece is positioned between a pair of opposing facing pieces, or the facing piece is positioned between a pair of opposing facing pieces, thereby preventing the door frame from tipping in the front-to-rear direction while allowing adjustment of the position of the door frame and fixing work to be performed, resulting in good workability on site. In the embodiment described below, the pair of opposing protruding pieces of the first connecting member provided on the back side of the door frame can be temporarily held in a state where they are received in the space between the first facing piece and the second facing piece of the second connecting member provided on the frame body. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 1 is a front view of a door frame installed in a building opening, with the finish wall omitted. [Figure 2] FIG. 2 is a partially enlarged view of FIG. [Figure 3] This is a diagram showing the fixing structure of the vertical frame and the main body using a connecting means, and the upper figure is a cross-sectional view taken along arrow A in the lower figure. [Figure 4] A diagram showing the fixing structure of the upper frame and the main body using a connecting means. [Figure 5] 3A and 3B are diagrams illustrating the rotational state of the second connecting means, and the lowest diagram of the three diagrams is a view seen from the direction of arrow B in the lower diagram of FIG. [Figure 6] FIG. 10 is a view showing a first connecting member. [Figure 7] FIG. 10 is a view showing a second connecting member. DETAILED DESCRIPTION OF THE INVENTION

[0015] [A] Overall structure of the door device with the door frame attached to the frame An embodiment of the present invention will be described in detail with reference to the drawings. Fig. 1 is a front view of a door device attached to an opening in a building, with the finish wall omitted, i.e., showing the state before the finishing wall is constructed. The door frame according to this embodiment is a three-sided frame consisting of a top frame 1 and left and right vertical frames 2. The space surrounded by the three-sided door frame and floor surface FL forms the opening in the building, and the opening in the building is opened and closed by a door body D via a hinge H. The door frame in the illustrated embodiment is for a swing door, but the type of door is not limited thereto.

[0016] A three-sided door frame is assembled in a factory by fixing (by welding, screws, etc.) the upper ends of left and right metal (e.g., steel) vertical frames 2 to both longitudinal ends of a metal (e.g., steel) top frame 1. In one embodiment, the door frame is assembled in a factory, transported to a construction site, and fixed to the structure on the building frame side, but the door frame may also be assembled on site with screws, etc. Note that a three-sided door frame is an example, and the door frame may also be a four-sided frame with a bottom frame (sill).

[0017] In this embodiment, the structure on the skeleton side is a reinforced concrete structure, and the skeleton surfaces on three sides are formed by the left and right side walls W1 and the top wall W2. As shown in Figures 1 and 2, the door frame consisting of the top frame 1 and the left and right vertical frames 2 is attached to the skeleton (the left and right side walls W1 and the top wall W2) by connecting means 5 consisting of a first connecting member 3 and a second connecting member 4.

[0018] [B] Door frame configuration [B-1] Vertical frame The configuration of the door frame will be described mainly based on the configuration of the vertical frame 2. The left and right vertical frames 2 are elongated members extending in the height direction (vertical direction) and, as shown in Fig. 3, comprise a first visible surface 20 on a first side and a second visible surface 21 on a second side, with the visible width of the second visible surface 21 being greater than the visible width of the first visible surface 20. The vertical frames 2 further comprise a first visible surface 22 extending from the inside (opening side) end of the first visible surface 20 to the second side, a second visible surface 23 extending from the inside (opening side) end of the second visible surface 21 to the first side, and an intermediate visible surface 24 connecting the first visible surface 22 and the second visible surface 23, with the first visible surface 22, second visible surface 23, and intermediate visible surface 24 facing the opening.

[0019] A first outer prospective edge 25 extending in the prospective direction from the outer end (the side farther from the opening) of the first prospective face 20 is integrally formed with the first prospective face 20, and a second outer prospective edge 26 extending in the prospective direction from the outer end (the side farther from the opening) of the second prospective face 21 is integrally formed with the second prospective face 21. In the vertical frame 2, the first outer prospective edge 25 and the second outer prospective edge 26 are located on the same imaginary plane extending in the prospective direction, and the tip of the first outer prospective edge 25 and the tip of the second outer prospective edge 26 are spaced apart. The shape of the vertical frame 2 (particularly the shape of the portion facing the opening) is not limited to the embodiment shown in the figures.

[0020] [B-2] Upper frame The upper frame 1 according to this embodiment has the same cross-sectional shape as the vertical frame 2, and as shown in FIG. 4, is in a position where the vertical frame 2 is rotated by 90 degrees. As shown in Figure 4, the upper frame 1 has a first visible surface 10 on the first side, a second visible surface 11 on the second side that is wider than the first visible surface 10, a first visible surface (first lower surface) 12 extending from the inner (opening side) end or lower end of the first visible surface 10 to the second side, a second visible surface (first lower surface) 13 extending from the inner (opening side) end or lower end of the second visible surface 11 to the first side, an intermediate visible surface 14 connecting the first visible surface 12 and the second visible surface 13, a first outer visible edge (first upper edge) 15 extending in the visible direction from the outer (side farther from the opening) end or upper end of the first visible surface 10, and a second outer visible edge (second upper edge) 16 extending in the visible direction from the outer (side farther from the opening) end or upper end of the second visible surface 11. In the upper frame 1, the first outer prospective edge (first upper edge) 15 and the second outer prospective edge (second upper edge) 16 are located on the same imaginary plane extending in the prospective direction (horizontally), and the tip of the first outer prospective edge 15 and the tip of the second outer prospective edge 16 are spaced apart. The shape of the upper frame 1 (particularly the shape of the portion facing the opening) is not limited to the illustrated form.

[0021] [C] Connection means In this embodiment, the connecting means 5 for fixing the door frame to the skeleton consists of a first connecting member 3 provided on the door frame and a second connecting member 4 provided on the skeleton. The door frame is attached to the skeleton by connecting the first connecting member 3 provided on the back side of the door frame (the side opposite the opening) to the second connecting member 4 fixed to the skeleton.

[0022] [C-1] First connecting member As shown in Fig. 6, the first connecting member 3 comprises a rectangular or strip-shaped plate element 30 and a pair of opposing plate-shaped protrusions, i.e., a first protrusion 31 and a second protrusion 32, provided in a rising shape on the surface of the plate element 30. In one embodiment, the first protrusion 31 and the second protrusion 32 are integrated with the plate element 30 by welding their base ends to the surface of the plate element 30 (welding is an example, and they may also be fastened with screws). In this embodiment, the first protrusion 31 and the second protrusion 32 are arranged so that the center between the first protrusion 31 and the second protrusion 32 is located in the center of the length of the plate element 30.

[0023] The length of the first connecting member 3, i.e., the length of the plate-like element 30, is greater than the distance between the tip of the first outer projected edge 15 and the tip of the second outer projected edge 16 of the upper frame 1, and the distance between the tip of the first outer projected edge 25 and the tip of the second outer projected edge 26. The first connecting member 3 is fixed (by welding, screwing, etc.) in such a manner that the longitudinal ends of the plate-like element 30 overlap and abut the first outer projected edges 15, 25 and the second outer projected edges 16, 26 of the door frame, respectively. The first connecting member 3 is provided to span between the first outer projected edges 15, 25 and the second outer projected edges 16, 26 of the door frame. The first connecting member 3 also functions as a reinforcing member for the door frame (upper frame 1, vertical frame 2). The first connecting member 3 is attached to the door frame (upper frame 1, vertical frame 2) in a factory, and the door frame is transported to the construction site with the first connecting member 3 attached.

[0024] A plurality of first connecting members 3 are provided at intervals in the length direction (opening width direction) of the upper frame 1, and a plurality of first connecting members 3 are provided at intervals in the length direction (height direction) of the vertical frame 2 (see Figs. 1 and 2). When the first connecting member 3 is fixed to the vertical frame 2, the plate-like element 30 is in a vertical position (Fig. 3), and when the first connecting member 3 is fixed to the upper frame 1, the plate-like element 30 is in a horizontal position (Fig. 4). In either position, the pair of protrusions 31, 32 of the first connecting member 3 extend in the viewing direction.

[0025] [C-2] Second connecting member 7, the second connecting member 4 is composed of a plate-shaped first portion 40, a plate-shaped second portion 41 extending perpendicularly to the first portion 40, a main body having an L-shape in a side view, and a pair of plate-shaped end pieces rising from both widthwise ends of the tip half of the first portion 40, i.e., a first end piece 42 and a second end piece 43. The second portion 41 of the second connecting member 4 has a long hole 410 extending in the widthwise direction formed therein.

[0026] The second connecting member 4 is fixed to the skeleton with the second portion 41 abutting against the skeleton surface (side wall W1, top wall W2). The fixing means of the second connecting member 4 according to this embodiment is an anchor bolt 6. The anchor bolt 6 can be fastened to an anchor nut 60 fixed to the skeleton, and includes a shank 61 and a head 62. The shank 61 of the anchor bolt 6 is inserted into the elongated hole 410 of the second portion 41 of the second connecting member 4, and the head 62 is rotated to tighten the anchor bolt 6, thereby pressing the second portion 41 against the skeleton surface and fixing it to the skeleton. When the head 62 is rotated to loosen the anchor bolt 6, the second portion 41 can move in the projection direction and rotate relative to the shank 61 of the anchor bolt 6 via the elongated hole 410 (see FIG. 5 ). In addition, the anchor bolt, which is the fixing means of the second connecting member 4 in this embodiment, is composed of an anchor fixed to the main body and a nut (which has a role equivalent to the head 62 of the anchor bolt 6) that is integrated with the anchor and can be tightened or loosened around the shank protruding from the main body surface, and the shank of the anchor bolt can be inserted into the long hole 410 of the second part 41 of the second connecting member 4, and the nut can be tightened around the shank protruding from the long hole 410 to press the second part 41 against the main body surface and fix it to the main body.

[0027] A plurality of second connecting members 4 are fixed to the left and right side walls W1 and the top wall W2 so as to correspond to a plurality of first connecting members 3 provided at intervals around the periphery of the rear side of the door frame (see FIGS. 1 and 2). When the second connecting members 4 are fixed to the side walls W1, the first portion 40 is in a horizontal position and the second portion 41 is in a vertical position (FIG. 3). When the second connecting members 4 are fixed to the top wall W2, the first portion 40 is in a vertical position and the second portion 41 is in a horizontal position (FIG. 4). In either position, a pair of sight pieces 42, 43 extending vertically from the first portion 40 extend in the sight direction, and an elongated hole 410 formed in the second portion 41 extends in the sight direction.

[0028] [C-3] Connection between the first connecting member and the second connecting member As shown in Figures 3 and 4, the distance between the first and second projection pieces 42 and 43 of the second connecting member 4 is larger than the dimension between the outer surfaces of the pair of opposing protrusions (first and second projection pieces 31 and 32) of the first connecting member 3 (projected dimension of the pair of protrusions), so that when attaching the door frame to the main body, the pair of protrusions (first and second projection pieces 31 and 32) provided on the back side of the door frame can be received and temporarily held between the first and second projection pieces 42 and 43 of the second connecting member 4.

[0029] The first connecting member 3 and the second connecting member 4 are connected with screws S1 after adjusting the position of the door frame (facing direction X, facing direction Y, height direction Z) with a pair of protrusions (first protrusion 31 and second protrusion 32) provided on the back side of the door frame inserted between the first facing piece 42 and the second facing piece 43 of the second connecting member 4, and then the first protrusion 31 and the first facing piece 42 are brought into contact so as to overlap, or the second protrusion 32 and the second facing piece 43 are brought into contact so as to overlap.

[0030] In this embodiment, the clearance between the projected dimensions of the pair of protrusions (first protrusion 31, second protrusion 32) of the first connecting member 3 and the spacing between the pair of facing pieces (first facing piece 42, second facing piece 43) of the second connecting member 4 is set so that the second connecting member 4 can rotate relative to the first connecting member 3 when the pair of protrusions (first protrusion 31 and second protrusion 32) provided on the back side of the door frame are received between the first facing piece 42 and the second facing piece 43 of the second connecting member 4.

[0031] [D] Fixing structure between door frame and main body In the fixing structure between the door frame and the main body in this embodiment, a first connecting member 3 having a pair of opposing protrusions 31, 32 extending in the facing direction is provided on the back of the door frame, and a second connecting member 4 having a pair of opposing sight pieces 42, 43 is attached to the main body by an anchor bolt 6, and one of the pair of protrusions 31, 32 of the first connecting member 3 (in the illustrated embodiment, the first protrusion 31) and one of the pair of sight pieces 42, 43 of the second connecting member 4 (in the illustrated embodiment, the first sight piece 42) are fixed in abutting state by a screw S1.

[0032] [E] How to fix the door frame to the frame The door frame, which is a three-sided frame consisting of a top frame 1 and left and right vertical frames 2, is assembled in a factory, and then transported to the construction site with multiple first connecting members 3 fixed to the back side of the door frame (the side opposite to the side surrounded by the three-sided frame).The door frame may also be assembled on site.

[0033] At the construction site, multiple second connecting members 4 are positioned at predetermined locations on the left and right side walls W1 and the top wall W2, and then fixed using anchor bolts 6. The heads 62 of the anchor bolts 6 are exposed from both the first and second sides, and with the second connecting members 4 fixed to the building frame by the anchor bolts 6, the anchor bolts 6 can be loosened or tightened by rotating the heads 62 from the first or second side.

[0034] The pair of projections (first projection 31, second projection 32) of each first connecting member 3 provided on the back side of the door frame delivered to the site are positioned so as to be received between pairs of facing pieces (first facing piece 42, second facing piece 43) of multiple second connecting members 4 provided on the building frame. At this time, the second connecting member 4 may be rotated from its normal fixed position to temporarily fix it, and with the door frame in a predetermined position, the head 62 of the anchor bolt 6 may be rotated to loosen the anchor bolt 6, and the second connecting member 4 may be rotated to return to the normal fixed position, and the head 62 may be rotated to tighten the anchor bolt 6 to fix the second connecting member 4 to the building frame (see FIG. 5).

[0035] The pair of projections (first projection 31, second projection 32) of each first connecting member 3 provided on the back side of the door frame are received between a pair of facing pieces (first facing piece 42, second facing piece 43) of each corresponding second connecting member 4 provided on the frame, thereby temporarily holding the door frame in a state where the pair of facing pieces is received between the pair of facing pieces (first facing piece 42, second facing piece 43) of each corresponding second connecting member 4 provided on the frame. That is, in the temporarily held state, when the door frame tries to fall to the first side, the first projection 31 of the first connecting member 3 provided on the door frame abuts against the inner surface of the first facing piece 42 of the second connecting member 4 provided on the frame, and when the door frame tries to fall to the second side, the second projection 32 of the first connecting member 3 provided on the door frame abuts against the inner surface of the second facing piece 43 of the second connecting member 4 provided on the frame, thereby preventing the door frame from falling.

[0036] With the door frame temporarily held, the mounting position of the door frame in the facing direction X can be adjusted within the range where the overlapping state of the pair of protrusions (first protrusion 31, second protrusion 32) of the first connecting member 3 provided on the left and right vertical frames 2 and the pair of facing pieces (first facing piece 42, second facing piece 43) of the second connecting member 4 provided on the left and right side walls W1 is maintained.

[0037] With the door frame temporarily held, the head 62 of the anchor bolt 6 is exposed from both the first side and the second side, and by rotating the head 62 to loosen the anchor bolt 6, the fixing position of the second connecting member 4 can be adjusted in the prospective direction Y within the range of the elongated hole 410 of the second part 41 of the second connecting member 4, and by changing the fixing position of the second connecting member 4 (first outboard piece 42, second outboard piece 43) in the prospective direction Y, it is possible to adjust the attachment position of the door frame in the prospective direction Y. After adjustment, the head 62 is rotated to tighten the anchor bolt 6, and the fixing position of the second connecting member 4 is determined.

[0038] With the door frame temporarily held, the head 62 of the anchor bolt 6 is exposed from both the first and second sides. By rotating the head 62 to loosen the anchor bolt 6, each second connecting member 4 can be rotated and the inclination of the fixed posture of the second connecting member 4 can be adjusted (in the direction of the arrow in the lower diagram of FIG. 5). For example, if the mounting position of the plate-like element 30 relative to the door frame is slightly misaligned, the second connecting member 4 can be rotated or tilted to match the inclination of the pair of protrusions (first protrusion 31, second protrusion 32) of the first connecting member 3 connected to the door frame, thereby bringing one of the protrusions 42, 43 of the second connecting member 4 into close contact with one of the protrusions 31, 32. Because the shank 61 of the anchor bolt 6 is inserted through the elongated hole 410, the position of the second connecting member 4 in the projection direction Y and the rotation and inclination adjustment can be performed simultaneously.

[0039] With the door frame temporarily held, the connection position of the first connecting member 3 provided on the door frame and the second connecting member 4 provided on the main body is adjusted to determine the fixed position of the second connecting member 4, and one of the pair of facing pieces (first facing piece 42, second facing piece 43) of the second connecting member 4 is abutted against one of the pair of protrusions (first protrusion piece 31, second protrusion piece 32) of the first connecting member 3, and the abutting facing piece and protrusion piece are connected from the first side or the second side with a screw S1 to fix the door frame to the main body. [Explanation of symbols]

[0040] 1 Top frame 2 Vertical Frame 3 First connecting member 31 First projection 32 Second projection 4 Second connecting member 40 Part 1 41 Part 2 410 long hole 42 First piece 43 Second piece 5 Connection means 6 anchor bolts (bolts) 62 Bolt head S1 screw W1 side wall (framework) W2 Upper wall (structure)

Claims

1. A fixing structure between a door frame and a body that forms an opening, A first connecting member having at least one protrusion extending in the front direction is provided on the rear surface of the door frame, The body is provided with a second connecting member having a pair of opposing facing pieces, The protruding piece is located between the pair of facing pieces, The protruding piece of the first connecting member and one of the pair of protruding pieces of the second connecting member are fixed by a screw in a state of abutting against each other. Door frame fixing structure.

2. A fixing structure between a door frame and a body that forms an opening, A first connecting member having a pair of opposing protrusions extending in the front direction is provided on the back surface of the door frame, The body is provided with a second connecting member having a pair of opposing facing pieces, The pair of protruding pieces are located between the pair of facing pieces, The protruding piece of the first connecting member and one of the pair of protruding pieces of the second connecting member are fixed by a screw in a state of abutting against each other. Door frame fixing structure.

3. A fixing structure between a door frame and a body that forms an opening, A first connecting member having at least one protrusion extending in the front direction is provided on the rear surface of the door frame, The body is provided with a second connecting member having a pair of opposing facing pieces, The second connecting member includes a first portion and a second portion extending perpendicular to the first portion, the second connecting member is fixed by a bolt with the second portion abutting against the body, The bolt head is exposed in a space between the body and the projection, and the first portion is spaced from the second portion by a projection formed in a rising shape. The protruding piece of the first connecting member and one of the pair of protruding pieces of the second connecting member are fixed by a screw in a state of abutting against each other. Door frame fixing structure.

4. A long hole extending in a projection direction is formed in the second portion, and the second connecting member is fixed by a bolt that is inserted through the long hole and fixed to the main body, The second connecting member is movable in the projection direction through the elongated hole when the bolt is loosened, and is tiltable around the axis of the bolt. The door frame fixing structure according to claim 3.

Images