JP5134354B2 - Temporary connection structure of horizontal frame material and vertical frame material in door frame, and door frame structure using the temporary connection structure - Google Patents

Description

The present invention relates to a temporary connection structure between a horizontal frame member and a vertical frame member in a door frame, and a door frame structure using the temporary connection structure.

Conventionally, when assembling a four-sided frame-shaped door frame, the end of the vertical frame extending in the vertical direction and the end of the horizontal frame extending in the horizontal direction are brought into contact with each other and welded. However, in order to perform welding while abutting the end portions of the vertical frame and the horizontal frame, two people are required, one who holds the end portion while holding the abutting state between the end portions and the other who performs the welding operation. Moreover, in the work while pressing the ends of the vertical frame and the horizontal frame, the abutting position is likely to be shifted, and as a result, the finish accuracy of the door frame may be lowered.

Moreover, the door frame is usually shipped in a state assembled as a four-sided frame. This is because the accuracy of the door frame does not come out when assembled on site, and it takes time to assemble on site. Also, as mentioned above, when assembling, the work of two people, the person holding temporarily and the person fixing it This is due to reasons such as If the door frame can be shipped as it is and assembled at the site, the transportation cost can be reduced by improving the loading efficiency during transportation. Also, if the door frame is shipped in the assembled state as a four-sided frame, if the work to fill the interior of the railings on site to reinforce the railings (lower frame) can be shipped as each frame material, Can be done.

In Patent Document 1, in a door frame provided at a wall surface opening of a building, a first frame plate portion and a first finding portion are formed by bending a first frame plate along a longitudinal direction. A first frame member provided with a tenon at an end of the frame surface portion thereof, and a second frame plate portion and a second finding portion are formed by bending the second frame plate along the longitudinal direction; A second frame member provided with a mortise in the second frame surface portion, and the first frame member and the second frame member include the first finding portion and the second finding member. The door frame is characterized in that the tenon and the tenon hole are fitted and joined together by welding, and the tenon passed through the tenon hole is formed. Bending and welding may reduce workability.

In Patent Document 2, a locking tongue piece is formed on one end surface portion of each connecting portion of the frame, and a locking hole is formed on the other side surface portion or upper surface portion of each connecting portion. The door frame is a door frame that is fixed by fitting and folding the retaining tongue into the locking hole, inserting a fixing screw as a fixing member from the mounting hole side, and further screwing it into the mounting hole. Although this thing does not perform a welding operation | work, the bending operation | work of a latching tongue piece is needed and there exists a possibility that workability | operativity may fall.

In Patent Document 3, in the door frame joining structure, a projecting piece having a small hole is provided at an end of one frame material to be joined, and the other frame material to be joined has the projecting piece at the joining portion. A slit is provided to be inserted and fitted, and a fixed nail having a head having a cross-sectional diameter larger than the cross-sectional diameter of the nail shaft portion is driven into the small hole of the inserted protruding piece, and the head of the fixed nail The contact portion between the outer peripheral portion of the frame and the frame material surface provided with the slit, the contact portion between the small hole portion of the protruding piece and the fixed nail, and the frame member surface provided with the slit near the tip of the fixed nail A door frame structure that is bonded and fixed at three points of the abutting portion is disclosed. Although this thing can solve the trouble resulting from welding work, since it is necessary to drive a fixed nail in the state which matched the position of frame materials correctly, it cannot necessarily be said that workability | operativity is good.
JP2007-70843 JP 2002-174083 A Japanese Patent No. 3281933

An object of the present invention is to perform the assembly work of the door frame efficiently by one person without reducing the finishing accuracy.

Another object of the present invention is to enable the door frame assembly work to be performed on site.

The first technical means adopted by the present invention is a temporary connection structure of a horizontal frame material and a vertical frame material in a door frame,
A plate-shaped projecting piece is formed on the end face in the length direction of one of the frame members,
An insertion groove into which the protruding piece is inserted is formed on the surface portion of the other frame member,
In the one frame member, on the base end side of the plate-like projecting piece , it is located on the end surface in the length direction of the one frame member, and is perpendicular to the projecting direction of the projecting piece and the insertion groove A fitting groove extending in the groove width direction is formed,
In the other frame member, a portion located at an edge in the groove width direction of the insertion groove of the surface portion forms a fitted portion into which the fitting groove is fitted,
The projecting piece inserted from the projecting direction of the projecting piece into the insertion groove has a groove width of the inserting groove in a state in which the end face in the length direction of the one frame member is in contact with the surface portion of the other frame member. By moving in the direction, the fitting groove can be fitted into the fitted portion without any gap ,
With the end surface in the length direction of the one frame member in contact with the surface portion of the other frame member, the fitting groove of the projecting piece of the one frame member and the fitted portion of the other frame member are It is the temporary connection structure characterized by being in a fitting state without a gap .

In one aspect, the narrow guide part is formed in the front end side of the protrusion. By forming the guide portion on the tip side of the projecting piece, the projecting operation of the projecting piece into the insertion groove can be performed smoothly. In one embodiment, an expanding guide portion is formed in the opening of the fitting groove on the base end side of the projecting piece. By forming the guide part in the opening of the fitting groove on the base end side of the projecting piece, the fitting groove of the projecting piece inserted into the insertion groove and the end edge of the insertion groove can be smoothly fitted. .

A second technical means adopted by the present invention is a door frame structure using the temporary connection structure, wherein a surface portion in which a first screw hole is formed is provided on a longitudinal end surface of the one frame member. The second frame member is formed with a second screw hole at a position corresponding to the first screw hole in the fitted state. In the fitted state, the first screw hole is formed. And a door frame structure in which the one frame member and the other frame member are fixed by attaching a screw to the second screw hole. The surface portion in which the first screw hole is formed may be a part formed integrally with the one frame member or a separate member attached to the one frame member.

The temporary assembling work using the temporary connection structure according to the present invention includes inserting the protruding piece of one frame member into the insertion groove of the other frame member, and sliding the inserted protruding piece in the groove width direction of the inserting groove. In addition, since the diagonal dimensions of the entire frame can be easily obtained by sliding the frame members together, temporary assembly work can be performed alone. And at the time of temporary assembly, since the end portions of the frame members have already been matched, the main assembly work after the temporary assembly can be performed alone.

For example, by performing the main assembly work using screws, all of the temporary assembly work and the main assembly work can be performed on site. Therefore, the door frame can be shipped as it is, and the transportation cost can be reduced by improving the loading efficiency during transportation. In addition, shipping the door frame as it is, there is an advantage that the storage space for each frame material can be saved as compared with the case where the door frame is shipped as a four-sided frame.

A first embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the door frame as a whole has a vertical rectangular shape, and is assembled from an upper frame 1, a lower frame 2, and left and right vertical frames 3 and 4. 2 is a sectional view of the upper frame portion of the door frame shown in FIG. 1, FIG. 3 is a sectional view of the lower frame portion of the door frame shown in FIG. 1, and FIG. 4 is a vertical frame portion of the door frame shown in FIG. FIG. In the door frame of the first embodiment, the inclined edges at both ends in the length direction of the upper frame 1 are in contact with the inclined edges at the upper ends of the left and right vertical frames 3 and 4. Further, as shown in FIGS. 3 and 4, the both ends of the lower frame 2 in the length direction and the lower ends of the left and right vertical frames 3 and 4 are arranged such that the lower frame 2 has a finding surface of the vertical frames 3 and 4. It is abutted in the state located inside.

As shown in FIG. 5, the upper frame 1 is a long member extending in the horizontal direction, and includes a lower surface portion 10 extending in the opening width direction of the opening portion, and a width direction (length direction) of the lower surface portion 10. The first locating piece 11, the second locating piece 12, and the upper end sides of the first locating piece 11 and the second locating piece 12 that face each other from both edges and extend in a rising shape. The first bent piece 13 and the second bent piece 14 are formed by horizontally bending the above. The lower surface portion 10 includes a first lower surface portion 100 and a second lower surface portion 101 having different heights in the width direction, and a step portion 102 is formed between the first lower surface 100 and the second lower surface 101. .

Protruding pieces 15 are formed at both longitudinal edges of the first lower surface portion 100. Similarly, projecting pieces 16 are formed at both end edges in the length direction of the second lower surface portion 101. The projecting piece 15 has a trapezoidal guide portion on the distal end side, and a fitting groove S extending in a direction perpendicular to the projecting direction of the projecting piece 15 is cut out at one end on the base end side. An expanding guide portion is formed on the opening side of the fitting groove S. The projecting piece 15 has the same plate thickness as that of the first lower surface portion 100, and extends horizontally from the end surface in the length direction of the first lower surface portion 100. Similarly, the projecting piece 16 has a trapezoidal guide portion on the distal end side, and a fitting groove S extending in a direction orthogonal to the projecting direction of the projecting piece 16 is cut out at one end on the base end side. Yes. An expanding guide portion is formed on the opening side of the fitting groove S. The projecting piece 16 has the same plate thickness as the second lower surface portion 101, and extends horizontally from the end surface in the length direction of the second lower surface portion 101. As shown in FIG. 5, in the projecting piece 15 and the projecting piece 16, the fitting groove S is formed on the same side.

Further, the configuration of the projecting piece 15 will be described in detail. As shown in FIG. 8A, the projecting piece 15 includes side edges 150 and 151 extending perpendicularly to the edge 100 </ b> A of the lower surface portion 100, and an inclined edge 152 on the tip side of the side edges 150 and 151. 153 and a tip edge 154 extending in parallel with the edge 100A of the lower surface portion 100 between the tips of the inclined edges 152, 153. Further, on the base end side of the side edge 151, a fitting groove S extending in parallel with the end edge 100A of the lower surface portion 100 is formed. On the base end side of the side edge 151 on the side where the fitting groove S is formed, an inclined edge 155 is formed at the opening of the fitting groove S, and the opening of the fitting groove S is expanded. A guide portion is formed. By forming the inclined edge 155 at the opening of the fitting groove S, fitting of the member to the fitting groove S is facilitated. Regarding the shape of the projecting piece 16, the description relating to the projecting piece 15 can be used, and thus detailed description thereof is omitted.

As shown in FIG. 6, the lower frame 2 is a long member extending in the horizontal direction, and includes an upper surface portion 20 extending in the opening width direction of the opening portion, and a width direction (length direction) of the upper surface portion 20. The first locating piece 21, the second locating piece 22, and the bent pieces that are bent horizontally from the lower end of the first locating piece 21. 23. The upper surface portion 20 includes a first upper surface 200 and a second upper surface 201 having different heights in the width direction, and a stepped portion 202 is formed between the first upper surface 200 and the second upper surface 201.

Protruding pieces 24 are formed at both longitudinal edges of the first upper surface portion 200. Similarly, projecting pieces 25 are formed at both ends in the length direction of the second upper surface portion 201. The protruding piece 24 has a trapezoidal guide portion on the distal end side, and a fitting groove S extending in a direction orthogonal to the protruding direction of the protruding piece 24 is cut out at one end on the proximal end side. An expanding guide portion is formed on the opening side of the fitting groove S. The projecting piece 24 has the same plate thickness as that of the first upper surface portion 200, and extends horizontally from the end surface in the length direction of the first upper surface portion 200. In the illustrated embodiment, the protruding piece 24 on one end side and the protruding piece 24 on the other end side have different shapes, but the basic configuration described above is the same. Similarly, the projecting piece 25 has a trapezoidal guide portion on the distal end side, and a fitting groove S extending in a direction orthogonal to the projecting direction of the projecting piece 25 is cut out at one end on the base end side. Yes. An expanding guide portion is formed on the opening side of the fitting groove S. The projecting piece 25 has the same plate thickness as the second upper surface portion 201, and extends horizontally from the end surface in the length direction of the second upper surface portion 201. As shown in FIG. 6, in the projecting piece 24 and the projecting piece 25, the fitting groove S is formed on the same side. About the shape of the protrusions 24 and 25, since the description which concerns on the protrusion 15 can be used, detailed description is abbreviate | omitted.

As shown in FIG. 7, the vertical frame 3 is a long member that extends in the vertical direction, and the expectation piece 30 that extends in the opening height direction of the opening, and the width direction (length direction) of the expectation piece 30. The first locating piece 31 and the second locating piece 32 extending in opposite directions from both ends of the edge, and the extending ends of the first locating piece 31 and the second locating piece 32 are bent, respectively. The first bent piece 33 and the second bent piece 34 are provided. The expectation piece 30 includes a first expectation surface 300 and a second expectation surface 301, and a step portion 302 is formed between the first expectation surface 300 and the second expectation surface 301. Insertion grooves 35, 36, 37, and 38 for inserting the projecting pieces 15, 16, 24, and 25 are formed in the upper end portion and the lower end portion of the first expectation surface 300 and the second expectation surface 301.

The basic configuration of the other vertical frame 4 is the same as that of the vertical frame 3, and the vertical frame 4 is a long member extending in the vertical direction, and an expected piece extending in the opening height direction of the opening. 40, the first finding piece 41 and the second finding piece 42 extending in opposite directions from both edges in the width direction of the expecting piece 40, and the extending ends of the first finding piece 41 and the second finding piece 42 And a first bent piece 43 and a second bent piece 44 (see FIGS. 2 and 3). The expectation piece 40 includes a first expectation surface 400 and a second expectation surface 401, and a step 402 is formed between the first expectation surface 400 and the second expectation surface 401. Insertion grooves 45, 46, 47, and 48 for inserting the projecting pieces 15, 16, 24, and 25 are formed at the upper end portion and the lower end portion of the first expectation surface 400 and the second expectation surface 401.

The first prospecting surface 300 of the vertical frame 3, the insertion grooves 35, 36, 37, and 38 formed in the upper end portion and the lower end portion of the second prospective surface 301, and the first expectation surface 400 and the second expectation of the vertical frame 4. The dimensions (groove width dimension and groove clearance) of the insertion grooves 45, 46, 47, 48 formed in the upper end portion and the lower end portion of the surface 401 are dimensions that can accept the corresponding projecting pieces 15, 16, 24, 25. -Needless to say, it has a shape. In the illustrated embodiment, each of the projecting pieces 15, 16, 24, 25 extends horizontally, and the insertion grooves 35, 36, 37, 38, 45, 46, 47, 48 are also expected surfaces of the vertical frames 3, 4. 300, 301, 400, 401 are formed horizontally. Further, one end side of the insertion groove may be open (see FIG. 14A, insertion groove 36 in FIG. 15), and in that case, the width dimension of the projecting piece is larger than the width dimension of the insertion groove. Also good. Moreover, in one aspect, the plate | board thickness of the upper frame 1, the lower frame 2, and the vertical frames 3 and 4 is 1.6 mm, and the clearance gap between the fitting grooves S is 1.7 mm-1.9 mm.

The temporary assembly of the upper frame 1, the lower frame 2, and the vertical frames 3 and 4 formed as described above will be described with reference to FIG. 9 by taking the connection between the upper frame 1 and the vertical frame 3 as an example. First, the projecting piece 15 projecting from the end surface 100A in the length direction of the first lower surface portion 100 of the lower surface portion 10 of the upper frame 1 is inserted into the insertion groove 35 formed in the first prospective surface 300 of the vertical frame 3. Insert until 100A and the first prospective surface 300 abut. Next, the upper frame 1 is formed on the proximal end side of the projecting piece 15 by sliding the upper frame 1 in the groove width direction (horizontal direction) of the insertion groove 35 in a state where the end surface 100A and the first prospective surface 300 are in contact with each other. The fitting groove S is fitted to one end edge (fitted part) 35A of the insertion groove 35 to be in a fitting state (see FIG. 8B). In the present embodiment, since the upper frame 1 is formed with the two projecting pieces 15, 16, the fitting between the projecting piece 15 and the insertion groove 35 and the fitting between the projecting piece 16 and the insertion groove 36 are actually performed. Are performed simultaneously. The same procedure is performed when the upper frame 1 and the vertical frame 4 are temporarily assembled.

Similarly, the projecting piece 24 projecting from the end surface in the length direction of the first upper surface portion 200 of the upper surface portion 20 of the lower frame 2 and the projecting piece 25 projecting from the end surface in the length direction of the second upper surface portion 201. The end face, the first prospecting surface 300, and the second expectation surface 301 come into contact with the insertion groove 37 formed on the first expectation surface 300 of the vertical frame 3 and the insertion groove 38 formed on the second expectation surface 301. Insert until Next, the lower frame 2 is slid in the groove width direction (horizontal direction) of the insertion grooves 37 and 38 in a state where the end face is in contact with the first appearance surface 300 and the second appearance surface 301, so that the projecting piece 24. , 25 are fitted into one end edge of the insertion grooves 37, 38. In one embodiment, the sliding movement distance of the fitting groove S is 3 mm to 5 mm, and the alignment of the finding surfaces can be adjusted when the frame members are assembled within the range of this distance. Further, in the illustrated embodiment, two corners of each frame member are fitted at a total of eight locations, so that a total of eight corners can be easily fitted, so that diagonal dimensions can be easily obtained, and temporary assembly work can be performed by one person. Become.

Insertion grooves 35, 36, 45, 46, 37, 38, 47, 48 are formed in the portions where the protruding pieces 15, 16, 24, 25 are formed in the upper frame 1 and the lower frame 2, and the vertical frames 3, 4. The positional relationship between the positions is such that when the upper frame 1 and the lower frame 2 and the vertical frames 3 and 4 are temporarily assembled, that is, after the protruding piece inserted into the insertion groove is slid, an appropriate matching position is obtained. Is previously formed. Therefore, since the end portions of the frame members (the end surface 100A and the first prospective surface 300) have already been matched at the time of the temporary assembly, the main assembly work after the temporary assembly can be performed alone. In the fitting state between the fitting groove S and the end edges of the insertion grooves 35, 36, 45, 46, 37, 38, 47, 48, the frame material is made of steel or stainless steel, and has a characteristic that a spring back is generated. For this reason, even if a processing error occurs in the frame material, a slight distortion occurs, so that the upper frame, the lower frame, and the vertical frame can be firmly fitted together without any gaps.

A second embodiment of the present invention will be described with reference to FIGS. Throughout the first embodiment, the second embodiment, and throughout the drawings, the same members are denoted by the same reference numerals, and the description of the members having the same reference numerals is made in the first embodiment, the second embodiment. It can mutually be referred to between between embodiment or between description about each drawing.

As shown in FIG. 10, the door frame as a whole has a vertically rectangular shape, and is assembled from an upper frame 1, a lower frame 2, and left and right vertical frames 3, 4. 11 is a sectional view of the upper frame portion of the door frame shown in FIG. 10, FIG. 12 is a sectional view of the lower frame portion of the door frame shown in FIG. 10, and FIG. 13 is a vertical frame portion of the door frame shown in FIG. FIG. In the door frame of the second embodiment, the end faces of the upper frame 1 and the lower frame 2 and the vertical frames 3 and 4 are located at the end faces of the upper frame 1 and the lower frame 2, respectively. Are in contact with each other in a state of being located on the inner side (so-called surface drop).

The upper frame 1 is a long member that extends in the horizontal direction, and has a lower surface portion 10 that extends in the opening width direction of the opening portion, and both edges of the width direction (direction perpendicular to the length direction) of the lower surface portion 10. Formed by bending the upper ends of the first finding piece 11 and the second finding piece 12 extending in a rising shape in opposition to each other and the first finding piece 11 and the second finding piece 12 horizontally. The first bent piece 13 and the second bent piece 14 are provided. The lower surface portion 10 includes a first lower surface portion 1000, a second lower surface portion 1001, and a third lower surface portion 1002 formed on a convex portion between the first lower surface portion 1000 and the second lower surface portion 1001.

As shown in FIG. 11, projecting pieces 15 are formed on both end edges in the length direction of the first lower surface portion 1000. Similarly, projecting pieces 16 are formed at both ends of the second lower surface portion 1001 in the length direction. The projecting piece 15 has a trapezoidal guide portion on the distal end side, and a fitting groove S extending in a direction perpendicular to the projecting direction of the projecting piece 15 is cut out at one end on the base end side. An expanding guide portion is formed on the opening side of the fitting groove S. The projecting piece 15 has the same plate thickness as that of the first lower surface portion 1000, and extends horizontally from the end surface in the length direction of the first lower surface portion 1000. Similarly, the projecting piece 16 has a trapezoidal guide portion on the distal end side, and a fitting groove S extending in a direction orthogonal to the projecting direction of the projecting piece 16 is cut out at one end on the base end side. Yes. An expanding guide portion is formed on the opening side of the fitting groove S. The projecting piece 16 has the same thickness as that of the second lower surface portion 1001 and extends horizontally from the end surface in the length direction of the second lower surface portion 1001. In the protruding piece 15 and the protruding piece 16, the fitting groove S is formed on the same side.

At both ends in the length direction of the upper frame 1, connection plates 5 are provided so as to close both end faces in the length direction of the opening. As shown in FIG. 18A, the connecting plate 5 is formed to face the surface portion 50 that forms the end surface in the length direction of the upper frame 1 and the both ends in the width direction of the surface portion 50 when attached to the upper frame 1. Side portions 51 and 52 and bent portions 53 and 54 formed by bending the rear end sides of the side portions 51 and 52. As shown in FIG. 14B and the like, screw holes H1 and H2 are formed in the surface portion 50 in the width direction corresponding to the positions where the projecting pieces 15 and the projecting pieces 16 are formed.

The lower frame 2 is a long member extending in the horizontal direction, and has an upper surface portion 20 extending in the opening width direction of the opening portion and both edges of the upper surface portion 20 in the width direction (a direction perpendicular to the length direction). There are provided a first finding piece 21 and a second finding piece 22 which extend in a hanging shape so as to face each other, and a bent piece 23 which is bent horizontally from the lower end of the first finding piece 21. The upper surface portion 20 includes a first upper surface 2000 and a second upper surface 2001 having different heights in the width direction.

As shown in FIG. 12, projecting pieces 24 are formed on both end edges in the length direction of the first upper surface portion 2000. Similarly, projecting pieces 25 are formed at both ends of the second upper surface portion 2001 in the length direction. The protruding piece 24 has a trapezoidal guide portion on the distal end side, and a fitting groove S extending in a direction orthogonal to the protruding direction of the protruding piece 24 is cut out at one end on the proximal end side. An expanding guide portion is formed on the opening side of the fitting groove S. The projecting piece 24 has the same thickness as that of the first upper surface portion 2000, and extends horizontally from the end surface in the length direction of the first upper surface portion 2000. Similarly, the projecting piece 25 has a trapezoidal guide portion on the distal end side, and a fitting groove S extending in a direction orthogonal to the projecting direction of the projecting piece 25 is cut out at one end on the base end side. Yes. An expanding guide portion is formed on the opening side of the fitting groove S. The projecting piece 25 has the same plate thickness as the second upper surface portion 2001 and extends horizontally from the end surface in the length direction of the second upper surface portion 2001. In the protruding piece 24 and the protruding piece 25, the fitting groove S is formed on the same side.

At both ends in the length direction of the lower frame 2, connecting plates 6 are provided so as to close both end faces in the length direction of the opening. As shown in FIG. 18B, the connecting plate 6 includes a surface portion 60 that forms the end surface in the length direction of the lower frame 2, and side portions 61 and 62 that are formed to face both ends in the width direction of the surface portion 60. , And a bent portion 63 formed by bending the rear end side of the side portion 61. The surface portion 60 includes two step-shaped surface portions, and screw holes H3 and H4 are formed in the width direction corresponding to the positions where the protrusion pieces 24 and the protrusion pieces 25 are formed.

The vertical frame 3 is a long member extending in the vertical direction, and includes a prospective piece 30 extending in the opening height direction of the opening, and both edges of the prospective piece 30 in the width direction (direction perpendicular to the length direction). First folding piece 31 and second folding piece 32 extending in a more opposing manner, and the first folding pieces formed by folding the extending ends of first and second fitting pieces 31 and 32, respectively. A piece 33 and a second bent piece 34 are provided. The prospective piece 30 is formed of a first prospective surface 3000, a second prospective surface 3001, and a third prospective surface 3002 formed on a convex portion between the first prospective surface 3000 and the second prospective surface 3001. ing. Insertion grooves 35 and 36 into which the projecting pieces 15 and 16 are inserted are formed at the upper end portions of the first and second prospective surfaces 3000 and 3001, respectively (FIG. 11). Insertion grooves 37 and 38 into which the projecting pieces 24 and 25 are inserted are formed at lower end portions of the first and third prospective surfaces 3000 and 3002, respectively (FIG. 12).

As shown in FIG. 14 (A), screw holes H5 and H6 are respectively positioned above the insertion grooves 35 and 36 at the upper end portions of the first and second prospective surfaces 3000 and 3001 of the vertical frame 3, respectively. Is formed. Screw holes H7 and H8 are formed in the lower end portion of the vertical frame 3 so as to be located below the grooves 37 and 38 (see FIGS. 13 and 18B). The screw holes H5, H6, H7, and H8 are long holes that have a width dimension larger than the shaft diameter of the screw 7 and are long in the prospective direction. By forming the screw holes H5, H6, H7, and H8 from long holes extending in the prospective direction, it is possible to adjust the alignment at the time of sliding fitting of the frame members.

The basic configuration of the other vertical frame 4 is the same as that of the vertical frame 3, and the vertical frame 4 is a long member extending in the vertical direction, and an expected piece extending in the opening height direction of the opening. 40, the first finding piece 41 and the second finding piece 42 extending in opposite directions from both edges in the width direction of the expecting piece 40, and the extending ends of the first finding piece 41 and the second finding piece 42 The first bent piece 43 and the second bent piece 44 are provided. The prospective piece 40 is formed of a first prospective surface 4000, a second prospective surface 4001, and a third prospective surface 4002 formed on a convex portion between the first prospective surface 4000 and the second prospective surface 4001. ing. Grooves 45 and 46 into which the projecting pieces 15 and 16 are inserted are formed at the upper end portions of the first and second prospective surfaces 4000 and 4001 (FIG. 11). Grooves 47 and 48 into which the projecting pieces 24 and 25 are inserted are formed at the lower end portions of the first and third prospective surfaces 4000 and 4002 (FIG. 12).

A screw hole (not shown) is formed in the upper end portion of the vertical frame 4 so as to be located above the insertion grooves 45 and 46. A screw hole (not shown) is formed in the lower end portion of the vertical frame 4 so as to be located below the grooves 47 and 48.

As shown in FIGS. 15 to 17, the projecting piece 15 projecting from the end surface in the length direction of the first lower surface portion 1000 of the lower surface portion 10 of the upper frame 1, and the end surface in the length direction of the second lower surface portion 1001. The protruding piece 16 is inserted into the insertion groove 35 formed in the first expectation surface 3000 of the vertical frame 3 and the insertion groove 36 formed in the second expectation surface 3001, the end face, the first expectation surface 3000, 2 Insert in the horizontal direction until the prospective surface 3001 contacts (FIGS. 15 and 16). As shown in FIG. 16, in this state, the positions of the screw holes H1 and H2 on the upper frame 1 side and the screw holes H5 and H6 on the vertical frame 3 side do not match.

Next, by sliding the upper frame 1 in the width direction (horizontal direction) of the insertion grooves 35 and 36 from the state of FIG. 16, the fitting groove S formed on the proximal end side of the projecting pieces 15 and 16 becomes the insertion groove. It fits into one end edge of 35 and 36, becomes a fitting state, and is temporarily assembled (FIG. 17). The operations up to here are the same as those in the first embodiment, and the description of the second embodiment can be incorporated into the first embodiment.

In the state of FIG. 17, the positions of the screw holes H1 and H2 on the upper frame 1 side and the screw holes H5 and H6 on the vertical frame 3 side coincide with each other, and the first prospective surface 3000 and the second prospective surface 3001 of the vertical frame 3. The vertical frame 3 and the upper frame 1 are fixed by screwing the screw 7 into the screw holes H1 and H5 and the screw holes H2 and H6 from the back side of the screw. In the state of FIG. 17, the upper frame 1 and the vertical frame 3 are temporarily assembled, and the positions of the screw holes H1, H2 on the upper frame 1 side and the screw holes H5, H6 on the vertical frame 3 side are the same. Fixing work using the screw 7 is simple.

Although the connection between one end of the upper frame 1 and the vertical frame 3 has been described, the connection between the other end of the upper frame 1 and the vertical frame 4, each end of the lower frame 2 and the vertical frames 3, 4 This also applies to the connection of. Since the welding operation is not used in the door structure of the second embodiment, the upper frame 1, the lower frame 2, and the vertical frames 3 and 4, which are each frame material constituting the door frame, are carried into the site as they are and temporarily assembled at the site. Later, the door frame can be formed by fixing with screws 7.

The present invention can be used as a door frame structure.

It is a schematic front view of the door frame of 1st Embodiment. It is sectional drawing of the upper frame part of the door frame shown in FIG. It is sectional drawing of the lower frame part of the door frame shown in FIG. It is sectional drawing of the vertical frame part of the door frame shown in FIG. It is the figure which looked at the upper frame from the lower side, and a side view. It is the figure which looked at the lower frame from the upper side, and a side view. It is the figure which looked at one vertical frame from the side, and sectional drawing. (A) is an enlarged view of a protruding piece, (B) is a figure which shows the fitting state of the fitting groove of a protruding piece, and the to-be-fitted part of the edge of an insertion groove. It is a figure explaining fitting with the projection piece formed in the upper frame, and the insertion groove formed in the vertical frame. It is a schematic front view of the door frame of 2nd Embodiment. It is sectional drawing of the upper frame part of the door frame shown in FIG. It is sectional drawing of the lower frame part of the door frame shown in FIG. It is sectional drawing of the vertical frame part of the door frame shown in FIG. (A) is a perspective view which shows the upper end part of a vertical frame, (B) is a perspective view which shows the edge part of an upper frame. It is a perspective view which shows the state before inserting the edge part of an upper frame in the upper end part of a vertical frame. It is a perspective view which shows the state by which the protrusion of the upper frame was inserted in the insertion groove of the vertical frame from the state of FIG. FIG. 17 is a perspective view showing a state where the upper frame is slid relative to the vertical frame and temporarily assembled from the state of FIG. 16. (A) is sectional drawing which shows the connection state of the edge part of an upper frame, and a vertical frame, (B) is sectional drawing which shows the connection state of the edge part of a lower frame, and a vertical frame.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Upper frame 2 Lower frame 3 Vertical frame 4 Vertical frame 7 Screw 15, 16, 24, 25 Projection piece 35, 36, 37, 38, 45, 46, 47, 48 Insertion groove S Fitting groove H1, H2, H3, H4, H5, H6, H7, H8 screw holes

Claims (2)

It is a temporary connection structure of a horizontal frame material and a vertical frame material in a door frame,
A plate-shaped projecting piece is formed on the end face in the length direction of one of the frame members,
An insertion groove into which the protruding piece is inserted is formed on the surface portion of the other frame member,
In the one frame member, on the base end side of the plate-like projecting piece , it is located on the end surface in the length direction of the one frame member, and is perpendicular to the projecting direction of the projecting piece and the insertion groove A fitting groove extending in the groove width direction is formed,
In the other frame member, a portion located at an edge in the groove width direction of the insertion groove of the surface portion forms a fitted portion into which the fitting groove is fitted,
The projecting piece inserted from the projecting direction of the projecting piece into the insertion groove has a groove width of the inserting groove in a state in which the end face in the length direction of the one frame member is in contact with the surface portion of the other frame member. By moving in the direction, the fitting groove can be fitted into the fitted portion without any gap ,
With the end surface in the length direction of the one frame member in contact with the surface portion of the other frame member, the fitting groove of the projecting piece of the one frame member and the fitted portion of the other frame member are Temporary connection structure characterized by being in a fitted state with no gap . A door frame structure using the temporary connection structure according to claim 1,
A surface portion in which a first screw hole is formed is provided on the end surface in the length direction of the one frame member,
A second screw hole is formed in the other frame member at a position that matches the first screw hole in the fitted state,
A door frame structure formed by fixing the one frame member and the other frame member by attaching screws to the first screw hole and the second screw hole in the fitted state.

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