Door frame and door frame fixing structure

Abstract

To provide a door frame fixing structure which uses simple members, is easy to install, and enables accurate positioning.SOLUTION: In a fixing structure (this fixing structure 1) which is configured such that a door frame (this door frame M) including an upper door frame M1, a lower door frame M2, a left door frame M3, and a right door frame M4 is fixed to a skeleton frame R using fasteners 10 provided at several specified locations of this door frame M, each fastener 10 includes a welded nut 11 welded to this door frame M, a threaded sleeve 12 fastened to the welded nut 11, and a drill screw 13 inserted into the threaded sleeve 12, the drill screw 13 being fastened to the skeleton frame R from the inside of this door frame M.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a door frame and a fixing structure of the door frame.

Background Art

[0002] A door frame is a structural material used to form an opening to which a door is attached, and it will be fixed to a structure on the building body side at a construction site. In recent years, at construction sites, a structure for fixing a door frame without using welding has been proposed for the purpose of preventing fire accidents and improving construction efficiency.

[0003] For example, on a floor slab, an angle material is driven in to determine the feet, the door frame (door jamb) is built into the mounting opening, and level adjustment is performed by a rotating member such as a bolt. For position fixing, there is a fixing structure of the door frame in which the building body and the head of the bolt are fixed with an adhesive (hereinafter referred to as "conventional first fixing structure"). (Patent Document 1).

[0004] Further, on the back surface of the door frame (door jamb), a first connecting member having at least one projecting piece extending in the finding direction is provided, and on the building body, a second connecting member having a pair of opposing finding pieces is provided. There is a fixing structure of the door frame in which the projecting piece of the first connecting member and one of the pair of finding pieces of the second connecting member are fixed with screws in a state of being in contact with each other (hereinafter referred to as "conventional second fixing structure"). (Patent Document 2).

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, the conventional first fixing structure has the problem that although vertical and horizontal position adjustments are possible, front-back position adjustment cannot be performed. In addition, since an adhesive is used for construction, the construction becomes complicated, and there is also the problem that it takes a certain amount of time for the adhesive to cure. Also, the conventional second fixing structure has the problem that the structures of the first connecting member and the second connecting member become complicated.

[0007] Recently, at construction sites, a shortage of labor has become a problem, and while the utilization of foreign workers, women, inexperienced workers, etc. is demanded, the development of a fixing structure for a door frame that can be easily installed by one person is being requested.

[0008] The present invention has been made to solve the above problems, and an object thereof is to provide a door frame and a fixing structure for a door frame that use simple members, are easy to construct, and can be accurately positioned.

Means for Solving the Problems

[0009] In order to achieve the above object, in the present invention, in a door frame including an upper door frame, a lower door frame, a left door frame, and a right door frame, which is fixed to a mounting frame of a building opening using fasteners provided at a plurality of predetermined locations on the door frame, the fasteners include a welding nut, a threaded sleeve fastened to the welding nut, and a fastening screw inserted through the threaded sleeve, and the welding nut is pre-welded to the door frame.

[0010] Further, the present invention provides a door frame fixing structure in which a door frame including an upper door frame, a lower door frame, a left door frame, and a right door frame is fixed to a mounting frame of a body opening using fasteners provided at a plurality of predetermined positions on the door frame. The fastener includes a welding nut pre-welded to the door frame (each of the upper door frame, the lower door frame, the left door frame, and the right door frame), a threaded sleeve fastened to the welding nut, and a fastening screw inserted through the threaded sleeve. The fastening screw is fastened to the mounting frame of the body opening from the inside of the door frame (the side opposite to the mounting frame of the body opening).

[0011] Further, in the door frame fixing structure of the present invention, if the threaded sleeve and the fastening screw can be rotationally operated (mounting operation) at the tip by the same tool during the operation of mounting the door frame to the mounting frame of the body opening, the mounting work can be completed with one tool, which is preferable.

[0012] In addition, in order to enable the rotational operation (mounting operation) of the tips of the threaded sleeve and the fastening screw by the same tool, for example, the shapes of the threaded portions of the threaded sleeve and the fastening screw can be made into a common shape (such as a plus shape) that matches the shape of the tip (bit shape) in screw tightening tools such as a drill driver and an impact driver.

[0013] Here, there are no restrictions on the material, form, dimensions, etc. of the opening frame and the mounting frame of the body opening, and there are also no restrictions on the type of door attached to the door frame. Further, there are no restrictions on the material, form, dimensions, etc. of the welding nut, the threaded sleeve, and the fastening screw used for the fastener. Note that as the fastening screw, a screw with a drill, a screw for concrete, etc. can be used according to the material of the mounting frame of the body opening.

[0014] According to the fixing structure of the door frame of the present invention, it includes a welding nut welded to the door frame, a threaded sleeve fastened to the welding nut, and a fastening screw inserted through the threaded sleeve. Since the fastening screw is fastened to the mounting frame of the body opening from the inside of the door frame, the door frame can be attached to the mounting frame of the body opening with a simple structure.

[0015] Also, in the fixing structure of the door frame of the present invention described above, if an upper door frame position adjuster for adjusting the front-rear position is provided at each upper corner of the left door frame and the right door frame, after temporarily positioning with a fastener, it is possible to position the upper door frame in the front-rear direction. Therefore, the door frame can be accurately attached to the mounting frame of the body opening.

[0016] Also, the upper door frame position adjuster is not limited in its structure as long as it can play a role in adjusting the position of the upper door frame in the front-rear direction (width direction), but it can have the following fixing structure of the door frame. That is, in the fixing structure of the door frame of the present invention, in the fixing structure of the door frame in which a door frame including an upper door frame, a lower door frame, a left door frame, and a right door frame is fixed to the mounting frame of the body opening, an upper door frame position adjuster for adjusting the front-rear position is provided at each upper corner of the left door frame and the right door frame. The upper door position adjuster includes an angle member attached to the mounting frame of the body opening, and a connecting body having a U-shaped cross-section in top view and having two opposing side plates, and is attached to the left door frame or the right door frame. The protruding surface of the angle member is positioned between the two side plates of the connecting body, and a position adjusting member with an adjustable protruding length (adjustable) is provided in contact with the angle member on each side plate. It is preferably a fixing structure of the door frame characterized by the above.

[0017] Furthermore, in the door frame fixing structure of the present invention, at least one lower door frame position adjuster for adjusting the position in the front-rear direction is provided on the lower door frame, and one end of the threaded sleeve in at least one of the fasteners provided on the lower door frame is attached to the lower door frame position adjuster. In this way, after temporarily positioning with the fastener, it becomes possible to position the lower door frame in the front-rear direction. Furthermore, the door frame can be more accurately attached to the attachment frame of the body opening.

[0018] Here, the lower door frame position adjuster is not limited in its structure as long as it can play a role in adjusting the position of the lower door frame in the front-rear direction (width direction). However, it is preferably formed as a groove-shaped short piece-shaped member, and position adjustment pins are provided on each opposing side plate so that the protruding length can be adjusted (adjustable).

[0019] Note that the lower door frame position adjuster is provided according to the form of the door frame, and in the case of a three-sided frame or a door frame with a small height dimension, it is not necessarily required to be provided. Also, the number of lower door frame position adjusters is appropriately determined, and the number of fasteners attached to the lower door frame position adjuster can also be determined so as to correspond to ensure the stable operation of the lower door frame position adjuster (although it is desirable that the number of lower door frame position adjusters and the number of fasteners are the same, they do not necessarily have to be the same).

Advantages of the Invention

[0020] According to the present invention, it is possible to provide a door frame and a door frame fixing structure that use simple members, are easy to construct, and can be accurately positioned.

Brief Description of the Drawings

[0021]

Figure 1

Figure 2

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Figure 12

Embodiments for Carrying Out the Invention

[0022] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In the description of the drawings, the same reference numerals are given to the same elements, and duplicate descriptions are omitted. Also, each component can be changed as appropriate, and the description of the detailed structure not directly related to the present invention is omitted.

[0023] (1) Outline of the Present Invention The fixing structure of the door frame of this embodiment (hereinafter referred to as "this door frame M") (hereinafter referred to as "this fixing structure 1") is a structure in which this door frame M is fixed to the mounting frame (hereinafter referred to as "body frame R") of the body opening in the structure body K. Note that a door (not shown) will be attached to this door frame M so as to be freely openable (FIGS. 1, 2(a) to 2(c)).

[0024] A rectangular opening S is formed in the structure body K, and the body frame R is attached to the opening S. The body frame R is formed from an upper frame member (hereinafter referred to as "upper body frame R1"), a lower frame member (hereinafter referred to as "lower body frame R2"), a left frame member (hereinafter referred to as "left body frame R3"), and a right frame member (hereinafter referred to as "right body frame R4"). Also, a tubular body P having a rectangular cross-sectional shape is laid in the longitudinal direction on the upper surface of the lower body frame R2.

[0025] This door frame M is a four-sided frame in which an upper door frame M1, a lower door frame M2, a left door frame M3, and a right door frame M4 are formed in a rectangle. Note that this door frame M is manufactured in a factory and then transported to the site and fixed to the body frame R.

[0026] (2) Components of this door frame and this fixing structure This fixing structure 1 includes a plurality of fasteners 10 (18 in this embodiment), upper door frame position adjusters 20 at two positions on the left and right, and lower door frame position adjusters 30 at two positions on the left and right. The fastener 10 is a component for attaching this door frame M to the body frame R, and includes a welding nut 11 welded in advance at a predetermined position on the upper door frame M1, the lower door frame M2, the left door frame M3, and the right door frame M4, a threaded sleeve 12, and a drill screw 13 (fastening screw) (FIGS. 3(a), (b)).

[0027] The threaded sleeve 12 has a screw insertion hole 12a for inserting a drill screw 13 with a plus-shaped screw head (tip portion), and a screw portion is formed in a portion of a predetermined length from one end (hereinafter, the end where the screw portion is formed is referred to as the "screw-end portion 12b", and the end where the screw portion is not formed is referred to as the "screw-free end portion 12c"). The cross-sectional shapes of both ends of the threaded sleeve 12 are formed in a cross shape. Also, the tip on the screw-end portion 12b side of the threaded sleeve 12 is formed with a taper that reduces the diameter to facilitate fixing to the welding nut 11.

[0028] Note that each end of the threaded sleeve 12 can be appropriately determined according to the fastener to be used, such as making the cross-sectional shapes of both ends hexagonal, making one end cross-shaped and the other end hexagonal, and the like.

[0029] The upper door frame position adjuster 20 is a component for adjusting the position of the upper door frame M1 in the front-rear direction (width direction), and includes a mountain-shaped angle member 21 (in this embodiment, an equilateral angle member) and a U-shaped (viewed from above) connector 25 (Fig. 4). The angle member 21 is provided with mounting holes 22a at two locations on the surface (hereinafter referred to as the "mounting surface 22") to be attached to the left body frame R3 or the right body frame R4.

[0030] The connector 25 includes a rectangular central plate 26 and side plates 27 on both sides of the central plate 26. The side plates 27 have a composite shape of a rectangle and a sector (viewed from the side). Mounting holes 26a are formed at two locations on the central plate 26 of the connector 25. Further, side holes 27a are formed at the upper corner portions on the tip side of the opposing side plates 27, and upper position adjustment screws 29 (position adjustment members) are inserted into the respective side holes 27a so that the protruding length can be adjusted.

[0031] The lower door frame position adjuster 30 is a component for adjusting the position of the lower door frame M2 in the front-rear direction (width direction), and is formed as a grooved short strip-shaped member. An upper surface hole 31a is formed at the center of the web 31 of the lower door frame position adjuster 30, and side surface holes 32a are formed at opposite positions on the opposing flanges 32. And lower position adjustment screws 33 (position adjustment members) are inserted into the respective side surface holes 32a so that the protruding length can be adjusted (Fig. 5).

[0032] (3) Details of the main door frame and the main fixing structure The upper door frame M1, the lower door frame M2, the left door frame M3, and the right door frame M4 are fixed to the body frame R or the pipe body P by the respective fasteners 10 at predetermined locations (in this embodiment, the upper door frame M1 and the lower door frame M2 are each at four locations, and the left door frame M3 and the right door frame M4 are each at five locations). That is, the screw-free end portion 12c of the threaded sleeve 12 protrudes toward the body frame R side and is fastened to the welding nut 11, and a drill screw 13 is inserted into the screw insertion hole 12a of the threaded sleeve 12 from the inside of the main door frame M (the side away from the body frame R). Then, by screwing the tip of the drill screw 13 into the body frame R or the pipe body P, the main door frame M and the body frame R are fastened together (Fig. 2(a)).

[0033] The angle member 21 of the upper door frame position adjuster 20 has its mounting surface 22 attached to the left body frame R3 and the right body frame R4 by screwing a mounting screw 24 into the mounting hole 22a, and the other surface protrudes inward (the side away from the left body frame R3 or the right body frame R4) (hereinafter, the other surface protruding inward of the angle member 21 is referred to as the "protruding surface 23"). (Fig. 2(b)).

[0034] Further, the connecting body 25 is attached by screwing the mounting screws 28 into the mounting holes 26a of the center plate 26 at the upper ends of the left door frame M3 and the right door frame M4. And the protruding surface 23 of the angle member 21 is positioned between the two side plates 27 of the connecting body 25, and is clamped by the tip of the upper position adjustment screw 29 inserted through each side hole 27a. By adjusting the length of the protruding length of the upper position adjustment screw 29 and setting it to an appropriate length, the positioning of the upper door frame M1 in the front-rear direction can be achieved.

[0035] Also, the lower door frame position adjuster 30 is attached to two locations on the left and right end sides of the pipe body P. The lower door frame position adjuster 30 is loosely fitted to the pipe body P such that the opening is on the lower side and the flange 32 is positioned in the width direction (front-rear direction). The screw-free end portion 12c of the threaded sleeve 12 of the fastener 10 is inserted into the upper surface hole 31a. Each side hole 32a of the opposing flanges 32 is provided with a lower position adjustment screw 33, and the tip of the lower position adjustment screw 33 abuts against the side wall surface of the pipe body P. By adjusting the length of the protruding length of the lower position adjustment screw 33 and setting it to an appropriate length, the positioning of the lower door frame M2 in the front-rear direction can be achieved (FIG. 2(c)).

[0036] (4) Method of attaching this door frame to the building frame A method of attaching this door frame M to the building frame R will be described. In the following description, it is assumed that the building frame R and the pipe body P are attached to the structure body K, and the angle member 21 of the upper door frame position adjuster 20 is attached to the left door frame M3 and the right door frame M4.

[0037] Further, a threaded sleeve 12 is pre-attached to each welding nut 11 of this door frame M such that a screw-free end portion 12c protrudes outward by a predetermined length (the threaded sleeve 12 can be screwed on by screwing the threaded end portion 12b into the welding nut 11 using a screw tightening tool (not shown) having a bit shape of a cross shape). Note that the fastener 10 attached to the lower door frame M2 is attached such that the length of the screw-free end portion 12c protrudes, as compared with the fastener 10 attached to the upper door frame M1, the left door frame M3, and the right door frame M4, so as to be easily attached to the pipe body P.

[0038] First, align the protruding surface 23 of the angle member 21 (upper door frame position adjuster 20) attached to the upper door frame M1 so that it is positioned between the two side plates 27 of the connecting body 25 (Figs. 6(a) and (b)), and build the main door frame M inside the body frame R in the order of the upper door frame M1 and the lower door frame M2 (Figs. 7(a) and (b)). Then, bring the screw-free end portions 12c (fasteners 10) of the two inner threaded sleeves 12 in the lower door frame M2 into contact with the upper surface of the pipe body P, and insert the screw-free end portions 12c of the threaded sleeves 12 on both sides into the upper surface holes 31a of the lower door frame position adjuster 30 (Fig. 8).

[0039] Next, temporarily tighten the drill screws 13 of the fastener 10 in the order of the upper door frame M1 and the lower door frame M2, and further temporarily tighten the drill screws 13 (fasteners 10) of the left door frame M3 and the right door frame M4 (the order does not matter) for temporary positioning (Figs. 9 and 10).

[0040] Subsequently, perform positioning in the front-rear direction by adjusting the upper position adjustment screws 29 of each upper door frame position adjuster 20 (in the following description, when distinguishing the side plate 27, the upper position adjustment screw 29, the flange 32, and the lower position adjustment screw 33 in Figs. 11 and 12, the elements on the front side are arbitrarily assigned the symbol A, and the elements on the rear side are arbitrarily assigned the symbol B for convenience).

[0041] At this time, when positioning the main door frame M forward, position the upper position adjustment screw 29B on the rear side to protrude forward (toward the protruding surface 23 side of the angle member 21), and position and adjust the upper position adjustment screw 29A on the front side to protrude forward (in a direction away from the front side side plate 27A) for positioning in the forward direction.

[0042] Further, the lower position adjustment screw 33B on the rear side is projected forward, and the lower position adjustment screw 33A on the front side is adjusted to project in a direction away from the front flange 32A (Fig. 11).

[0043] On the other hand, when the main door frame M is positioned rearward, the upper position adjustment screw 29A on the front side is projected rearward (toward the protruding surface 23 side of the angle member 21), and the upper position adjustment screw 29B on the rear side is adjusted to project rearward (in a direction away from the rear side panel 27B) for positioning so as to face rearward.

[0044] Also, the lower position adjustment screw 33A on the front side is projected rearward, and the lower position adjustment screw 33B on the rear side is adjusted to project in a direction away from the rear flange 32B (Fig. 12). Finally, the drill screw 13 of the fastener 10 is fully tightened to fix the main door frame M to the body frame R, and the work is completed.

[0045] (5) Functions and effects of the main door frame and the main fixing structure According to the main door frame M, a welded nut 11 welded in advance and a threaded sleeve 12 fastened to the welded nut 11 are provided. By using a drill screw 13 inserted through the threaded sleeve 12, since the drill screw 13 is fastened to the body frame R from the inside of the main door frame M, the main door frame M can be attached to the body frame R with a simple structure.

[0046] Further, in this fixing structure 1, (1) the protruding surface 23 of the angle member 21 in the upper door frame position adjuster 20 provided at each upper corner of the left door frame M3 and the right door frame M4 is aligned so as to be positioned between the two side plates 27 of the connecting body 25; (2) in the order from the upper door frame M1 to the lower door frame M2, the door frame M is built inside the body frame R; (3) the fastener 10 in the lower door frame M2 is placed on the upper surface of the pipe body P, and the screw-free end 12c of the threaded sleeve 12 is inserted into the upper surface hole 31a of the lower door frame position adjuster 30 of the pipe body P, whereby the door frame M can be positioned with the minimum necessary degree in the body frame R. After that, by temporarily tightening the drill screw 13 of the fastener 10, adjusting the positions of the upper door frame position adjuster 20 and the lower door frame position adjuster 30, and finally tightening the drill screw 13, the door frame M can be installed on the body frame R for construction. Thus, since this fixing structure 1 can be constructed by one person, it contributes to labor saving in work.

[0047] Also, in this fixing structure 1, upper door frame position adjusters 20 for adjusting the position in the front-rear direction are provided at each upper corner of the left door frame M3 and the right door frame M4. Therefore, after the fastener 10 is fastened for temporary positioning, the upper door frame M1 can be positioned in the front-rear direction, so that the door frame M can be accurately attached to the body frame R.

[0048] Also, in this fixing structure 1, a lower door frame position adjuster 30 for adjusting the position in the front-rear direction is provided in the lower door frame M2, and one end of the threaded sleeve 12 is attached to the lower door frame position adjuster 30. Therefore, after the fastener 10 is fastened for temporary positioning, the lower door frame M2 can be positioned in the front-rear direction, so that the door frame M can be more accurately attached to the body frame R.

[0049] Furthermore, in this fixing structure 1, since the shapes of the threaded portions at the tip ends of the threaded sleeve 12 and the drill screw 13 are the same common plus shape, the attachment work can be completed with one screw tightening tool when attaching the door frame M to the body frame R.

[0050] As described above, an example of a preferred embodiment of the present invention has been explained. However, the present invention is not limited to the embodiment, and design changes can be appropriately made without departing from the spirit of the present invention. In addition, the present invention illustrates the minimum necessary components, and other necessary components may be added as long as the functions and effects thereof are not inhibited. Furthermore, each element (fastener, upper door frame position adjuster, and lower door frame position adjuster) constituting the present fixing structure described in the claims has a basic configuration, and various components can be used as long as they exhibit the functions and effects thereof.

Explanation of Signs

[0051] R Body frame M Main door frame 1 Present fixing structure 10 Fastener 11 Welding nut 12 Threaded sleeve 12a Thread insertion hole 12b Threaded end portion 12c Threadless end portion 13 Drill screw (fastening screw) 20 Upper door frame position adjuster 21 Angle material 22 Mounting surface 23 Protruding surface 25 Connecting body 26 Central plate 27 Side plate 29 Upper position adjustment screw (position adjustment member) 30 Lower door frame position adjuster 31 Web 32 Flange 33 Lower position adjustment screw (position adjustment member)

Claims

1. A door frame having an upper door frame, a lower door frame, a left door frame, and a right door frame is fixed to a mounting frame of a body opening using fasteners provided at a plurality of predetermined positions on the door frame, wherein the fastener includes a welding nut, a threaded sleeve fastened to the welding nut, and a fastening screw inserted through the threaded sleeve, the welding nut is pre-welded to the door frame, and the door frame is characterized by this.

2. In a door frame fixing structure in which a door frame having an upper door frame, a lower door frame, a left door frame, and a right door frame is fixed to a mounting frame of a body opening using fasteners provided at a plurality of predetermined positions, the fastener is a welding nut welded to the door frame, a threaded sleeve fastened to the welding nut, and a fastening screw inserted through the threaded sleeve, and the fastening screw is fastened to the mounting frame of the body opening from the inside of the door frame, and the door frame fixing structure is characterized by this.

3. An upper door frame position adjuster for adjusting the position in the front-rear direction is provided at each upper corner portion of the left door frame and the right door frame, and the door frame fixing structure according to claim 2 is characterized by this.

4. At least one lower door frame position adjuster for adjusting the position in the front-rear direction is provided on the lower door frame, and one end portion of the threaded sleeve in at least one of the fasteners provided on the lower door frame is attached to the lower door frame position adjuster, and the door frame fixing structure according to claim 2 or claim 3 is characterized by this.

5. The threaded sleeve and the fastening screw can be rotationally operated at the tip by the same tool, and the door frame fixing structure according to claim 2 or claim 3 is characterized by this.

6. In a door frame fixing structure in which a door frame having an upper door frame, a lower door frame, a left door frame, and a right door frame is fixed to a mounting frame of a body opening, an upper door frame position adjuster for adjusting the position in the front-rear direction is provided at each upper corner portion of the left door frame and the right door frame, and the upper door position adjuster is an angle member attached to the mounting frame of the body opening, and a connecting body having a U-shaped top view and having two opposing side plates, attached to the left door frame or the right door frame, and the protruding surface of the angle member is attached so as to be positioned between the two side plates of the connecting body, and The fixing structure of the door frame is characterized in that a position adjusting member with an adjustable protruding length is provided in contact with the angle member on each of the side panels.

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