WO2013146209A1

WO2013146209A1 - Building material back plate and building material back plate structure

Info

Publication number: WO2013146209A1
Application number: PCT/JP2013/056610
Authority: WO
Inventors: 久保田　渉
Original assignee: 文化シヤッター株式会社; ティアール建材株式会社
Priority date: 2012-03-30
Filing date: 2013-03-11
Publication date: 2013-10-03
Also published as: JPWO2013146209A1; JP6225106B2

Abstract

The present invention can eliminate the need for work for obliterating a joint mark such as a weld mark caused when a back plate is joined to a building material. A frame-side slat (11) of a hinge (10) that is a building material component for a door is disposed on the surface of a side frame member (5) that is a building material for an opening that is opened and closed by the door, and a back plate (20) facing the frame-side slat (11) is disposed on the back surface (5B) of the side frame member (5). The back plate (20) is joined to the back surface (5B) of the side frame member (5) by a weld (32) that is a joint, and the frame-side slat (11) is reinforced with the back plate (20) and coupled to the side frame member (5) by screws serving as couplers that penetrate the side frame member (5). In the back plate (20), a weldable portion that is a joinable portion is provided, as the tip (22) of a cut portion (21), inside the outer contour (14) of the frame-side slat (11), and even if a weld mark appears on the surface of the frame-side member (5) due to the weld (32) formed by welding at the tip (22), the weld mark is concealed by the frame-side slat (11).

Description

Building material back plate and building material back plate structure

The present invention relates to a building material back plate and a building material back plate structure for reinforcing and bonding a building material part to a building material, for example, a hinge used to attach a door to an opening frame member in an openable and closable manner. It can be used for building material parts.

The entrance door is attached to a frame member that is a building material for forming an opening that can be opened and closed by the entrance door, and can be opened and closed by a hinge. It has a wing plate and a frame side wing plate coupled to the frame member, and the frame side wing plate is coupled to the surface of both the front and back surfaces of the frame member. And as shown in the following Patent Document 1, a back plate facing the frame-side blade through the frame member is disposed on the back surface of the frame member, and the frame-side blade penetrates the frame member. The coupling member is coupled to the frame member, and this coupling is performed by being reinforced by the back plate.
JP-A-8-254060

In order to improve work efficiency and ease of work, the work of placing the back plate on the frame member may be performed in advance at the factory, not at the construction site of the entrance door. As described above, when the back plate is previously arranged on the frame member at the factory, a part of the outer contour of the back plate may be joined to the back surface of the frame member by welding.

The size and shape of the back plate are the same as or substantially the same as the frame-side vane facing the back plate through the frame member, in other words, the outer contour of the back plate is through the back plate and the frame member. Are the same as or substantially the same as the outer contour of the frame-side slats facing each other. For this reason, conventionally, when a part of the outer contour of the back plate is joined to the back surface of the frame member by welding, this welding mark appears on the surface of the frame member formed of a thin plate. In order to erase, work such as finishing the surface of the frame member with a tool such as a polishing tool is performed.

An object of the present invention is to provide a back plate for building material and a back plate structure for building material that can eliminate the need for removing work marks such as welding marks generated when the back plate is joined to the building material. .

The back plate for building material according to the present invention is a back plate for building material that is disposed on the other surface of the building material, facing the building material component disposed on one side, and bonded to the building material. In addition, in the building material back plate for reinforcing and bonding the building material part to the building material, the bonding material penetrating the building material is joined to the building material inside the outer contour of the building material part. It is characterized in that a connectable part is provided.

According to the back plate for building material, the back plate facing the building material part via the building material is provided with a bondable portion that can be bonded to the building material inside the outer contour of the building material part. Because the back plate is joined to the building material at this joinable part, even if the joining trace appears on one side of the building material on which the construction material component is arranged, the joining trace is displayed on the building material part. Therefore, the work for erasing the bonding trace can be made unnecessary, and the workability can be greatly improved.

In the building material back plate according to the present invention, it is preferable to hide the bonding trace by the building material part by hiding the entire bonding mark appearing on one side of the building material by the building material part. Even if a part of the joint trace is exposed from the building material parts, if the exposed size is such that it is not necessary to perform the above-mentioned work for erasing, it is not the entire joint trace but the joint. You may hide substantially the whole trace etc. with the components for building materials.

In the back plate for building materials according to the present invention, the weldable part may be a weldable part, or may be an adhesive or adhesive capable part with an adhesive or an adhesive.

Also, the weldable part may be a weldable part by arc welding, a weldable part by spot welding, or a weldable part by gas welding.

And when making a weldable part into the weldable part by arc welding, this weldable part may be made into the part which the front-end | tip part of the welding rod or welding wire used by arc welding can be latched. preferable.

According to this, the back plate can be joined to the building material by arc welding in a state in which the tip of the arc welding welding rod or welding wire is locked by the weldable portion, so that the tip of the welding rod or welding wire is connected. Since slipping can be prevented, the joining operation of the back plate to the building material by arc welding can be easily performed.

Further, in the case where the weldable part is a weldable part and the hole for inserting the above-described coupler is formed in the back plate, and the number of the holes is at least two, It is preferable to provide the weldable part at an equal or substantially equal distance from the hole.

According to this, when the back plate is joined to the building material by welding at the weldable portion, one of the at least two holes is deformed by welding heat and the insertion of the coupler becomes difficult. Therefore, the coupler can be inserted into each hole as prescribed.

Moreover, when making a weldable part into the weldable part by arc welding, a cut part can be provided in a part of back plate, and at least one part can be made into the weldable part by arc welding among this cut part. .

And providing a cut part in a part of back board in this way can be performed by various aspects. In the first example, the outer contour of the back plate is formed, and a portion that enters the inside of the outer contour of the back plate from two adjacent sides is formed, and this portion is cut out. It is to do. The second example is to form a part that enters the inside of the outer contour of the back plate from one side that forms the outer contour of the back plate, and this portion is used as a cut portion. In the third example, a hole is formed inside the outer contour of the back plate, and this hole is used as a cut portion.

In the case where at least two excision parts are provided, the excision part has a guide part for guiding the tip part to a weldable part by sliding the tip part of a welding rod or welding wire used in arc welding. It is preferable that these guide portions extend linearly or substantially linearly in the same or substantially the same direction and reach the weldable portion.

According to this, in order to join the back plate to the building material by arc welding at the weldable portion provided for each cut portion, the tip of the welding rod or welding wire used in arc welding is guided to each cut portion. When guiding to the weldable part by sliding the part, these guide parts extend linearly or substantially linearly in the same or substantially the same direction and reach the weldable part. The leading end of the wire can be slid linearly or substantially linearly in the same or substantially the same direction to reach the weldable portion by the guide action of the guide portion. It is possible to easily perform the work of reaching the tip part to the weldable part.

In the present invention, the excised part may be a part that cannot be seen as being excised due to the appearance of the back plate. That is, in order to provide a cutout portion on the back plate, the length of the back plate is shortened on the left and right and top and bottom, thereby, for example, one or more side portions of the back plate whose overall shape is a square or the like However, you may make it enter into the inner side rather than the outer outline of the part for building materials which faces this back plate and building materials, and the whole size of a back plate faces through this back plate and building materials It may be smaller than the building material part, and thereby the entire back plate may be arranged inside the outer contour of the building material part.

Furthermore, when the back plate according to the present invention is manufactured by punching a sheet metal, the cut portion may be formed by punching when the back plate is manufactured by punching the sheet metal. .

According to this, when the back plate is manufactured by punching a sheet metal, the cut portion can be simultaneously formed on the back plate, so that the back plate having the cut portion can be efficiently manufactured.

Moreover, when the through-hole for penetrating the coupler mentioned above is formed in the back plate, a cover member is arranged on the surface of the back plate opposite to the building material side, and the through hole is covered by this cover member. You may do it.

According to this, the through hole formed in the back plate can be protected from, for example, an external force by the covering member.

In addition, when the other surface of the building material on which the back plate is arranged is a surface that forms a space filled with the filler, the filler enters the through hole to enter the through hole. It is possible to prevent the covering member from making it impossible or difficult to insert and penetrate the coupler.

Furthermore, when the back plate according to the present invention is joined to the building material by welding, the covering member may be coupled to the above-described opposite surface of the back plate by welding for this joining.

According to this, since the covering member can be coupled to the back plate by welding for joining the back plate to the building material, the welding operation can be shared.

In addition, when the back plate is joined to the building material by welding, and the cover member is bonded to the opposite surface of the back plate in advance before the welding operation for this joining, the cover member is joined. It arrange | positions in the position remove | deviated from the weldable part which has become a possible part.

This makes it possible to weld the back plate, to which the covering member has been previously joined, to the building material by welding in the weldable portion without being affected by the covering member.

In the building material back plate structure according to the present invention, the building material part is arranged on one side of the both sides of the building material, and the back plate is arranged on the other side so as to face the building material part. In the building material back plate structure in which a plate is joined to the building material, and the building material parts are reinforced and bonded to the building material by the back plate by a coupler penetrating the building material, through the building material The back plate facing the building material component is provided with a bondable portion that can be bonded to the building material inside the outer contour of the building material component. The back plate is bonded to the building material.

According to this building material back plate structure, the back plate facing the building material part via the building material can be joined to the building material inside the outer contour of the building material part. Since the back plate is bonded to the building material at this bondable portion, the bonding trace may appear on the above-mentioned one surface of the building material where the building material parts are arranged. The joining trace can be hidden by the building material parts. Therefore, an operation for removing the joining trace can be made unnecessary, and the workability can be greatly improved.

In this building material back plate structure, concealing the bonding trace by the building material part is preferably concealing the entire bonding mark appearing on one side of the building material by the building material part. Even if a part of the trace is exposed from the building material part, if the exposed size is such that it is not necessary to perform the above-described work for erasing, the entire area of the joint trace, You may hide substantially the whole etc. with the components for building materials.

Further, the weldable part may be a weldable part, or may be an adhesive or adhesive part that can be bonded or adhered.

Moreover, when the above-mentioned building material to which the back plate is bonded is bonded to another building material by welding, the bondable portion is made a weldable portion, and the weldable portion is bonded to the building material and another building material. It is preferable to use a weldable part by welding of the same type as that for welding. That is, when welding that joins building materials and other building materials is arc welding, the weldable part is a weldable part by arc welding, and when welding that joins building materials and other building materials is spot welding In the case where the weldable portion is a weldable portion by spot welding and the welding for joining the building material and another building material is gas welding, the weldable portion is preferably a gas weldable portion.

According to this, the back plate can be joined to the building material by utilizing the equipment for joining the building material and other building materials, and the equipment can be shared.

Furthermore, it is preferable that the back plate and the building material are provided with a positioning portion for positioning the back plate with respect to the building material when the back plate is joined to the building material by arc welding or the like.

According to this, when the back plate is joined to the building material, the back plate can be positioned with respect to the building material by the positioning portion, so that the joining operation of the back plate to the building material is made immobile. Can be done. For this reason, this joining work can be performed by accurately arranging the back plate at a predetermined location of the building material, and the back plate can be joined to the accurate location of the building material.

In addition, the positioning part for positioning the back plate with respect to the building material may be by any means, for example, one of the back plate and the building material is fitted into the recess formed in the other. A concave-convex type that positions by combining may be used. And the recessed part which a convex part fits may be a hollow, and the hole penetrated may be sufficient as it.

Further, in the building material back plate structure according to the present invention, the other surface of the building material on which the back plate is arranged is a surface that forms a space filled with a filler such as concrete, When the through-hole for penetrating the above-described coupler is formed, a cover member for covering the through-hole may be fixed to the surface of the back plate opposite to the building material side.

According to this, even if a through-hole for allowing the coupler to pass through is formed in the back plate, this through-hole is covered with the covering member. Can be prevented from entering the through hole of the back plate.

And before a backplate is joined to a building material, when a cover member is fixed to the surface on the opposite side to the building material side in a backplate, the cover member is the welding which becomes a joinable part in a backplate. It is assumed that there is no portion that covers the possible portion, so that the welding work of the back plate to the building material can be performed without being affected by the covering member.

In the building material back plate and the building material back plate structure according to the present invention described above, the number of the connectable portions provided on the back plate may be one or plural. When the number of parts that can be joined is plural and when the back plate is joined to the building material by the above-mentioned coupling tool at the construction site, etc., until the back plate is joined to the building material by the coupling tool at the construction site, etc. In addition, in order to be able to more reliably join the back plate to the building material at a factory or the like, a plurality of connectable portions are separated as much as possible in the back plate, for example, the top and bottom 2 of the back plate. It is preferable to provide in the vicinity of these places or these places. In addition, when the back plate has a through-hole for penetrating the above-mentioned coupler or a positioning portion for positioning the back plate on the building material, a plurality of connectable portions are displaced from these holes and the positioning portion. Provided at the location.

Moreover, in the building material back plate and building material back plate structure according to the present invention described above, the above-described coupler for reinforcing and bonding the building material parts to the building material with the back plate may be any arbitrary bonding tool, One example of this coupler is a screw, and another coupler is a rivet.

In addition, the present invention can be applied to a back plate for an arbitrary building material part. This building material part may be a hinge for a door such as an entrance door, or may be a door closer, and may be a door latch. It may be a latch receiver for receiving the door, or may be a dead bolt receiver for receiving the dead bolt of the door.

Also, when the building material part is a hinge, this hinge may be, for example, a flag hinge, a flat hinge, a French hinge, a ceremonial hinge, or an arbitrary hinge.

Furthermore, in the present invention, when the building material part is a hinge for a door such as an entrance door, the back plate may be a back plate for the frame side blade plate of the hinge, or the door side blade plate. It may be a back plate for.

According to the present invention, it is possible to obtain an effect that an operation for erasing a joining mark such as a welding mark generated when a back plate is joined to a building material can be eliminated.

FIG. 1 is a front view showing an entire entrance door to which a building material back plate and a building material back plate structure according to an embodiment of the present invention are applied. FIG. 2 is a cross-sectional view taken along line S2-S2 of FIG. FIG. 3 is a perspective view of a hinge portion which is the building material part shown in FIG. 2. FIG. 4 is an exploded perspective view of the hinge, the back plate, and the cover member, with the side frame member shown in FIG. 3 omitted. 5 is a cross-sectional view taken along line S5-S5 of FIG. 6 is a rear view of the back plate and the cover member of FIG. FIG. 7 is a longitudinal sectional view showing a state in which a back plate and a cover member are arranged on the back surface of the side frame member shown in FIG. 3 and is a view before welding. FIG. 8 is a view of the back plate and the cover member in FIG. 7 as viewed from the back. FIG. 9 is a view similar to FIG. 6 showing the weldable portion according to the first alternative embodiment. FIG. 10 is a view similar to FIG. 6 showing the weldable portion according to the second alternative embodiment. FIG. 11 is a view similar to FIG. 8 showing a weldable part according to a third alternative embodiment. 12 is a cross-sectional view taken along line S12-S12 of FIG. FIG. 13 is a partially enlarged view of FIG. FIG. 14 is a plan view of FIG. FIG. 15 is a view similar to FIG. 8 showing a weldable portion according to a fourth alternative embodiment. 16 is a cross-sectional view taken along line S16-S16 in FIG.

DESCRIPTION OF SYMBOLS 1 Entrance door 2 Outer frame which is building material 5 Side frame member which comprises a part of outer frame 5A The surface which is one side of a side frame member 5B The back surface which is the other side of a side frame member 9 Concrete 10 which is a filler Hinge as a building material part 11 Frame-side slat that constitutes a part of the hinge 14 Outer contour of the frame-side slat 15 Screws as coupling tools 20, 40, 60, 80, 100 Back plate 20A to 20D, 40A to 40D , 60A to 60D, 80A to 80D, 100A to 100D Side portions of the back plate 21, 81 Cut portions 22 and 42 formed by intruding into the inside of the outer contour of the back plate from the two sides of the back plate 82 Front end portion 23, 43, 63, 83, 103 Back plate outer contour 26 Screw hole which is a through hole for screw 29 Positioning portion 30, 50, 70 , 90, 110 Cover 31 A welding rod or welding wire for arc welding 32 Welded portion 41 A cut portion formed by entering one side of the back plate to the inside of the outer contour of the back plate, which can be joined and weldable 61 A cut portion provided on the inner side of the outer contour of the back plate, a hole that is a joinable portion and a weldable portion, 81C, a side portion of the cut portion that is a guide portion, and a weldable portion by spot welding. Space to be filled

Hereinafter, each embodiment for carrying out the present invention will be described with reference to the drawings. In each of the embodiments described with reference to the drawings, the weldable portion provided on the back plate in order to join the back plate to the building material is a weldable portion.

Moreover, the building material component in each embodiment described below is a hinge 10 for the entrance door 1 shown in FIG. 1, and the building material in this embodiment is opened and closed by the entrance door 1. It is the outer frame 2 which forms the opening part 2A inside. FIG. 1 shows a state in which the front door 1 is openably and closably attached to the outer frame 2 by three upper and lower hinges 10. The outer frame 2 includes an upper frame member 3 and left and right side frames. The

members

4 and 5 and the lower frame member 6 are configured.

2 is a cross-sectional view taken along the line S2-S2 of FIG. 1. As shown in FIG. 2, the left and right

side frame members

4, 5 are connected to the reinforcing bar 7A of the concrete wall 7 by the connecting member 8A. The internal spaces S of these

side frame members

4 and 5 that are connected together and are bent metal sheets are filled with concrete 9 as a filler.

FIG. 3 shows a perspective view of a part of the hinge 10 partly represented by an imaginary line by a two-dot chain line, and FIG. 4 shows the side frame member 5 shown in FIG. An exploded perspective view of the hinge 10 etc. is shown. As can be seen from FIGS. 3 and 4, the hinge 10 according to the present embodiment is provided at the frame-side blade plate 11 which is a blade plate on the side frame member 5 side, and at the base end of the frame-side blade plate 11. 11A, the door-side slat 13 serving as a slat on the front door 1, the cylinder 13A provided at the base end of the door-side slat 13, and the cylinder 13A. The flag hinge is composed of a pin 12 that extends downward. By inserting the pin 12 into the inside of the cylinder portion 11A of the frame side blade plate 11 from above, the frame side blade plate 11 and the door side blade plate 13 are connected via the pin 12, and the pin 12 is At the center, the door-side slat 13 is rotatable with respect to the frame-side slat 11. The frame-side vane plate 11 is coupled to the side frame member 5 by five screws 15 shown in FIGS. 3 and 4, and the door-side vane plate 13 disposed above the frame-side vane plate 11 is The front door 1 is coupled to the end face of the front door 1 by a plurality of screws (not shown), whereby the front door 1 is rotatably attached to the side frame member 5 by a hinge 10.

Next, the present embodiment for joining the frame-side slat 11 constituting a part of the hinge 10 as the building material part to the side frame member 5 constituting a part of the outer frame 2 as the building material. A structure according to the embodiment will be described.

As shown in FIG. 3, the frame-side slat 11 is disposed on the front surface 5 A of the front and back surfaces 5 A and 5 B of the side frame member 5, and the back plate 20 is disposed on the back surface 5 B of the side frame member 5. It is arranged so as to face the frame side blades 11. As shown in FIG. 2, the front surface 5A of the side frame member 5 is a surface facing the entrance door 1, and the back surface 5B of the side frame member 5 is filled with the concrete 9 in FIG. This is the surface of the side frame member 5 that forms the internal space S. As shown in FIGS. 3 and 4, the cover member 30 is disposed on the surface of the back plate 20 opposite to the side frame member 5 side.

As shown in FIG. 4, the back plate 20 is provided with two upper and lower cut portions 21 formed by cutting a part of the back plate 20, and these cut portions 21 are formed. The outer contour 23 of the back plate 20 in the case where the back plate 20 is not formed is a vertically long rectangular contour composed of the upper side portion 20A of the back plate 20, the left and

right side portions

20B and 20C, and the lower side portion 20D. Of the two cut portions 21, the upper cut portion 21A is the two upper side portions adjacent to each other among these side portions 20A to 20D forming the outer contour 23 of the back plate 20. 20A and the side part 20B are formed by entering the inside of the outer contour 23 of the back plate 20, and the lower cutout part 21B is adjacent to each other among the side parts 20A to 20D. It is a portion formed by entering the inside of the outer contour 23 of the back plate 20 from the two lower side portions 20D and the side side portions 20B.

These cut portions 21 penetrate from the upper side portion 20A, the side side portion 20B, and the lower side portion 20D to the inside of the outer contour 23 of the back plate 20, and enter the upper side portion 20A, the side side portion 20B, and the lower side portion 20D. Since the intrusion is made at a right angle or a substantially right angle, the front end portion 22 of each cut portion 21 has a right or a substantially right-angled portion, in other words, two side portions form an angle. It has become a part.

The back plate 20 is manufactured by punching a sheet metal, and each cut portion 21 is formed by the punching process when the sheet metal is punched. For this reason, when manufacturing the back plate 20 from sheet metal, the cut part 21 is also formed simultaneously.

As shown in FIG. 6, the back plate 20 has a portion having a large area on the side opposite to the pin 12 side of the hinge 10 and the side frame member 5 in the frame-side vane plate 11 of the hinge 10. The size and shape of the back plate 20 when the cut portion 21 is not formed are the same as the above-described portion of the frame-side blade plate 11 facing the back plate 20 (hereinafter referred to as the facing portion 11B). .)) Is the same or substantially the same size and shape. In FIG. 6, the size and shape of the back plate 20 are set to be substantially the same as the facing portion 11 B of the frame-side blade 11, in other words, slightly larger than the size and shape of the facing portion 11 B. The cut portion 21 of the back plate 20 is a portion that has entered the inside of the outer contour 14 of the facing portion 11B of the frame-side slat 11.

As shown in FIG. 4, the frame-side slat 11 is formed with a hole 24 for inserting the aforementioned screw 15, and FIG. 5 is a sectional view taken along line S5-S5 of FIG. As shown in FIG. 7, a hole 25 for inserting the screw 15 is also formed in the side frame member 5, and the screw 15 is formed in the back plate 20 as shown in FIG. A screw hole 26 is formed which is a through hole for screwing and penetrating. These screw holes 26 may have a length longer than the thickness of the back plate 20 by performing, for example, burring on the back plate 20.

Further, as shown in FIG. 4, the back plate 20 is formed with two convex portions 27 protruding toward the frame-side wing plate 11 by half-cutting the back plate 20 made of sheet metal. As shown in FIGS. 5 and 7, two holes 28 are formed in the side frame member 5 at locations corresponding to the convex portions 27. For this reason, the back plate 20 is positioned and arranged on the side frame member 5 by fitting the respective convex portions 27 into the respective holes 28. Therefore, the convex part 27 and the hole 28 are the positioning part 29 in this embodiment formed in the back plate 20 and the side frame member 5 in order to perform this positioning.

The cover member 30 shown in FIG. 4 is a bent product of sheet metal, and as seen from FIGS. 6 and 8, has a size slightly smaller than the back plate 20 when viewed from the back. Yes. As shown in FIG. 4, the covering member 30 includes a box portion 30A and projecting

pieces

30B and 30C provided above and below the box portion 30A. The box portion 30A includes a back plate. Only the front surface, which is the surface on the side of 20, is open, and the top and bottom surfaces, the left and right side surfaces, and the back surface are closed surfaces. Further, as can be seen from FIG. 8, the box portion 30 A is formed as a through-hole 5 in the back plate 20 when the cover member 30 is disposed on the surface opposite to the side frame member 5 side of the back plate 20. All of the provided screw holes 26 are covered.

Each

protrusion

30B, 30C is applied to the surface of the back plate 20 opposite to the side of the side frame member 5, and these

protrusions

30B, 30C are shown in FIG. 6 and FIG. As shown, the left and right lengths are shorter than the distance between the left and right side surfaces of the box portion 30A. Therefore, the left and right lengths of the projecting

piece portions

30B and 30C extend to the cutout portion 21 of the back plate 20. It is not the length, and is the length up to the front of the excision part 21. In other words, the cut portion 21 is provided in a portion of the back plate 20 that is not covered by the covering member 30. Therefore, when the cover member 30 is arranged on the surface of the back plate 20 opposite to the side frame member 5 side, the cut portion 21 of the back plate 20 is not covered by the cover member 30, and the cut portion 21 is The covering member 30 does not have a portion that covers the cut portion 21.

7 and 8 show the side frame member 5, the back plate 20, and the covering member 30 in the factory before being brought into the construction site of the entrance door 1 shown in FIG. In the factory, the back plate 20 is positioned and arranged on the back surface 5B of the side frame member 5 by the positioning portion 29 described above, and the back plate 20 is joined to the back surface 5B of the side frame member 5 by welding. Since the positioning portion 29 of the present embodiment is composed of two convex portions 27 formed on the back plate 20 and two holes 28 formed on the side frame member 5, the positioning portion 29 is formed on the back surface 5 B of the side frame member 5. The back plate 20 is positioned and arranged by fitting the two convex portions 27 of the back plate 20 into the two holes 28 of the side frame member 5, and thus the back plate 20 is placed on the side frame member 5. After the positioning and positioning on the back surface 5B, the front end portion of the above-described cut portion 21 of the back plate 20 is brought into contact with the front end portion of the arc welding rod or welding wire 31 as shown in FIG. Thus, the back plate 20 is joined to the back surface 5B of the side frame member 5 by arc welding. A welded portion 32 generated by arc welding is indicated by a two-dot chain line in FIG. This weld 32 is also shown in FIG.

For this reason, in this embodiment, in order to join the back plate 20 to the side frame member 5 which is a building material, the joinable part provided in the back plate 20 is a weldable part by arc welding.

At the time of this arc welding, the projecting

piece portions

30B and 30C which are part of the covering member 30 are welded to the back plate 20 at the same time. That is, when the back plate 20 is joined to the back surface 5B of the side frame member 5 by arc welding, melting due to the welding heat of the arc welding reaches the projecting

piece portions

30B and 30C of the covering member 30, thereby The

pieces

30B and 30C are joined to the back plate 20. Further, when the protruding

pieces

30B and 30C of the cover member 30 are joined to the back plate 20 by arc welding in this way, the cover member 30 is temporarily fixed to the back plate 20 by spot welding, an adhesive, an adhesive, or the like in advance. It may be left or temporarily fixed.

As shown in FIG. 8, the left and right lengths of the projecting

pieces

30B and 30C are the lengths up to the front of the cutout portion 21 of the back plate 20, but the projecting

pieces

30B and 30C are cut off. Since the position has approached the portion 21, when the back plate 20 is joined to the back surface 5 B of the side frame member 5 by arc welding as described above, the projecting pieces 30 B and 30 C are welded to the back plate 20. Can do.

As described above, the back plate 20 is joined to the side frame member 5 at the factory, and the cover member 30 is joined to the back plate 20, and the upper frame member 3 and the left and right side frame members shown in FIG. 4 and 5 and the lower frame member 6 are joined to each other by welding to form the outer frame 2 for the opening 2A that is opened and closed by the front door 1, and these are then applied to the front door 1 shown in FIG. Bring it to the site. In this construction site, the left and right

side frame members

4 and 5 are connected to the reinforcing material 7A of the wall 7 shown in FIG. 2 by the connecting member 8, and then the concrete is placed in the internal space S of these

side frame members

4 and 5. 9 is performed.

Further, the screws 15 shown in FIGS. 3 and 4 are inserted from the holes 24 of the frame-side blade 11 of the hinge 10, and these screws 15 are inserted into the holes 25 of the side frame member 5. The frame side blades 11 are coupled to the surface 5A of the side frame member 5 by the screws 15 by screwing into the screw holes 26 and tightening the respective screws 15, and this coupling is thicker than the side frame member 5. Is reinforced by the large back plate 20. Further, the door-side slat 13 of the hinge 10 is coupled to the end face of the entrance door 1 with a screw (not shown) in the same manner as the frame-side slat 11, and thereafter, the pin 12 shown in FIG. It inserts into the inside of 11 C of cylinder parts of the side blade board 11 from upper direction, and, thereby, the attachment operation | work to the outer frame 2 of the entrance door 1 is complete | finished.

In the present embodiment, the back plate 20 is formed by welding of the same type as the welding for joining the upper frame member 3, the left and right

side frame members

4, 5 and the lower frame member 6 in order to form the outer frame 2 in the factory. Is joined to the side frame member 5. That is, in an operation of forming the outer frame 2 by joining the upper frame member 3, the left and right

side frame members

4, 5 and the lower frame member 6 at the factory, these frame members 3 to 6 are joined by arc welding. As described above, the back plate 20 is joined to the side frame member 5 by arc welding at the factory as described above. For this reason, the back plate 20 is attached using an arc welding machine for joining the frame members 3 to 6. An operation of joining the side frame member 5 is performed, and this operation can be easily performed using a welding machine for joining the frame members 3 to 6.

Therefore, when the frame members 3 to 6 are joined by spot welding, the operation of joining the back plate 20 to the side frame member 5 may be performed by spot welding. Further, when at least a part of the joining work of the frame members 3 to 6 is joining work such as arc welding work or spot welding work, the back plate 20 is joined to the side frame member 5. The work to be performed is preferably the same work as the above-described part of the work.

As described above, when the frame-side blade 11 of the hinge 10 is coupled to the surface 5A of the side frame member 5 and the back plate 20 with the screws 15 at the construction site of the entrance door 1, the back plate 20 shown in FIG. The distal end portion 22 of the cut portion 21 is present inside the outer contour 14 of the aforementioned facing portion 11B of the frame-side slat 11. In this embodiment, the back plate 20 is joined to the back surface 5B of the side frame member 5 by bringing the tip of the arc welding rod or the tip of the welding wire 31 into contact with the tip 22 in the above-described factory. Therefore, the tip 22 of the cut portion 21 is welded according to the present embodiment for arc welding provided on the inner side of the outer contour 14 of the facing portion 11B of the frame-side slat 11. It is a possible part.

And since the welding part 32 of FIG. 6 which arose by performing arc welding in this weldable part exists inside the outer outline 14 of the facing part 11B mentioned above of the frame side blade | wing blade 11, this, Even if a welding mark due to the welded portion 32 appears on the surface 5A of the side frame member 5, the welding mark may be hidden by the frame-side blade 11 disposed on the surface 5A of the side frame member 5. it can. For this reason, it is not necessary to finish the surface 5A of the side frame member 5 with a tool such as a polishing tool in order to erase the welding traces. Therefore, the work can be largely omitted and workability can be improved.

Further, as described above, the distal end portion 22 of the excision portion 21 that abuts the distal end portion of the welding rod or welding wire 31 of arc welding is a portion having a right-angle shape or a substantially right-angle shape. The tip portion 22 of the portion 21 can prevent the tip of the welding rod or welding wire 31 from slipping (sliding) at the tip of the arc welding welding rod or welding wire 31 applied to the cut portion 21. It is an angled part that can be fastened. For this reason, the tip of the welding rod or welding wire 31 is locked to the tip 22 of the excision 21, in other words, the tip of the welding rod or welding wire 31 is connected to the tip 22 of the excision 21. Arc welding can be performed in a positioned state. Therefore, the work of joining the back plate 20 to the back surface 5B of the side frame member 5 by arc welding is performed from the outer contour 14 of the facing portion 11B of the frame side blade plate 11. Can be easily and reliably performed at a predetermined position of the back plate 20 which is an inner position.

Further, when this arc welding is performed, the back plate 20 is positioned with respect to the side frame member 5 by the positioning portions 29 by the convex portions 27 and the holes 28, so that the back plate 20 moves with respect to the side frame member 5. The arc welding can be performed while preventing this, and therefore, the back plate 20 can be accurately joined to a predetermined portion of the back surface 5B of the side frame member 5.

Further, in this embodiment, the frame-side slats 11 of the hinge 10 are provided on the side frames by the screws 15 that serve as couplings that penetrate the side frame members 5 and reach the frame-side slats 11 and the back plate 20. Since it is coupled to the member 5 and the back plate 20, a screw hole 26 through which the screw 15 is screwed and penetrated is formed in the back plate 20, but a box portion that covers the screw hole 26 is formed in the back plate 20. Since the cover member 30 having 30A is attached, the back surface 5B of the side frame member 5 to which the back plate 20 is joined has the internal space S of the side frame member 5 filled with the concrete 9 shown in FIG. Even if it is a surface to be formed, the covering member 30 can prevent the concrete 9 from entering the screw holes 26 of the back plate 20. Accordingly, the frame-side blade 11 of the hinge 10 can be reliably coupled to the side frame member 5 and the back plate 20 by the screw 15.

For the construction site of the entrance door 1 where the concrete space 9 is not filled in the internal space S formed by the back surface 5B of the side frame member 5, the back plate 20 to which the covering member 30 is not attached is used. However, for the construction site of the entrance door 1 in which the interior space S is not filled with the concrete 9, the back plate 20 to which the covering member 30 is attached may be used, and according to this, at the construction site of each entrance door 1. The back plate to be used can be shared, and it is not necessary to distinguish between the back plate 20 with the cover member 30 and the back plate 20 without the cover member 30 for management, storage, or the like.

Further, when the back plate 20 to which the covering member 30 is attached is transported from the factory to the construction site of the entrance door 1, the screw hole 26 formed as a through hole in the back plate 20 is damaged by an external force or the like. This can be prevented by the covering member 30, and the screw hole 26 can be protected by the covering member 30.

Further, in the present embodiment, when the back plate 20 is joined to the back surface 5B of the side frame member 5 by arc welding, as described above, the projecting piece portion 30B, which is a part of the covering member 30, is obtained by this arc welding. Since 30C is welded to the back plate 20 at the same time, it is possible to achieve common use of the welding work, thereby reducing the work man-hours.

Furthermore, as described above, the front end 22 of the excision part 21 that is a weldable part of the back plate 20 is a portion of the back plate 20 that is not covered by the cover member 30, and the cover member 30 is excised. Since the portion covering the portion 21 is not provided, the operation of joining the back plate 20 to the back surface 5B of the side frame member 5 by arc welding can be easily performed without being affected by the covering member 30.

Further, in the present embodiment, the excision part 21 is provided in the vicinity of two places above and below the back plate 20 that are largely separated from each other on the back plate 20. By the time the 20 is joined to the side frame member 5, the back plate 20 can be more reliably joined to the side frame member 5 by the two welding portions 32 by arc welding in the factory. And since these welding parts 32 are provided in the place which shifted in the up-and-down direction from the whole five screw holes 26 provided in back board 20, and convex part 27 for positioning part 29, These screw holes 26 and convex portions 27 can be prevented from being deformed by the influence of welding heat.

Furthermore, in this embodiment, as shown in FIG. 6, the excision part 21 whose tip part 22 is a weldable part is the rotation of the hinge 10 among the left and right ends of the back plate 20. It is not provided near the end on the pin 12 side that is the center, and is provided near the end on the side opposite to the pin 12. As shown in FIG. 2, the location of the back plate 20 provided with such a cut-out portion 21 is a side frame facing the outdoor side and the indoor side of the opening 2 A opened and closed by the entrance door 1. Of the front surface 5 C and the back surface 5 D of the member 5, it is a location on the back surface 5 D side. The side frame member 5 is a bent product of sheet metal, the front surface 5C and the back surface 5D are surfaces of the side frame member 5 that are parallel or substantially parallel to each other, and the back surface 5D is behind the front surface 5C. This is the portion of the side frame member 5 that is spaced a large distance from the plate 20. For this reason, according to the present embodiment, the front end portion 22 of the cut portion 21 is brought into contact with the front end portion of the welding rod or welding wire 31 and the back plate 20 is joined to the rear surface 5B of the side frame member 5 by arc welding. The operation to be performed can be easily performed with less influence of the front surface 5C and the back surface 5D of the side frame member 5 than when the location of the back plate 20 on which the cut portion 21 is provided is the location on the front surface 5C side.

FIG. 9 shows another embodiment of the weldable part. The outer contour 43 of the back plate 40 in this embodiment is also a quadrangular contour composed of the upper side portion 40A, the left and

right side portions

40B and 40C, and the lower side portion 40D. A cut-out portion 41 formed by intruding into the outer contour 43 from each of 40A and the lower side portion 40D is provided. The tip portions 42 of these cut portions 41 are semicircular, and these tip portions 42 are portions that can lock the tip portions of arc welding welding rods or welding wires 31.

The covering member 50 in this embodiment also includes a box portion 50A and projecting

piece portions

50B and 50C provided on the upper and lower sides of the box portion 50A. The left and right lengths of these projecting

piece portions

50B and 50C This is the same as the distance between the left and right side surfaces of the part 50A. And in these

protrusion piece parts

50B and 50C, the cut part 51 is formed in the location corresponding to the cut part 41 of the back plate 40, and the width dimension of these cut parts 51 and the vertical dimension are The left and right width dimensions and the upper and lower length dimensions of the cut portion 41 of the back plate 40 are slightly larger.

The cut portion 41 of the back plate 40 in this embodiment is also a portion that has entered the inside of the outer contour 14 of the facing portion 11B facing the back plate 40 of the frame-side blade 11 of the hinge 10. For this reason, the front-end | tip part 42 of the cutting part 41 is a weldable part of this embodiment provided inside the outer contour 14. In this weldable portion, the back plate 40 can be joined to the back surface 5B of the side frame member 5 by arc welding by engaging the arc welding rod or the tip of the welding wire 31. At the time of joining by arc welding, the projecting

pieces

50B and 50C of the covering member 50 are joined to the back plate 40 by arc welding at the same time. For this reason, the covering member 50 may be temporarily fixed to the back plate 40 by spot welding or the like, or may not be temporarily fixed.

Also in this embodiment, at the front end portion 42 of the cut portion 41 of the back plate 40, the back plate 40 is joined to the back surface 5B of the side frame member 5 by the welding portion 32 by arc welding, so that the surface 5A of the side frame member 5 is bonded. Even if a welding mark appears, this welding mark can be hidden by the frame-side blade 11 of the hinge 10 disposed on the surface 5A of the side frame member 5.

FIG. 10 shows still another embodiment of the weldable part. The outer contour 63 of the back plate 60 in this embodiment is a vertically long rectangular contour composed of an upper side portion 60A, left and

right side portions

60B and 60C, and a lower side portion 60D, and the back plate 60 includes an upper side portion. Holes 61 are provided at locations close to each of 60 A and the lower side portion 60 D, and these holes 61 formed by cutting off part of the back plate 60 are formed inside the outer contour 63 of the back plate 60. In addition to the cut-out portion, it has a size that enables the arc welding welding rod or the tip of the welding wire 31 to be locked.

The cover member 70 in this embodiment also includes a box portion 70A and projecting

piece portions

70B and 70C provided above and below the box portion 70A, and has the same left and right length as the distance between the left and right side surfaces of the box portion 50A. These projecting

piece portions

70B and 70C have holes 71 at locations corresponding to the holes 61 of the back plate 60, and these holes 71 have a slightly larger diameter than the holes 61 of the back plate 60. Have

In this embodiment, the two holes 61 of the back plate 60 are provided in a portion inside the outer contour 14 of the facing portion 11 B facing the back plate 60 of the frame-side blades 11 of the hinge 10. For this reason, these holes 61 are weldable portions of the present embodiment provided on the inner side of the outer contour 14. In this weldable portion, the back plate 60 can be joined to the back surface 5B of the side frame member 5 by arc welding by engaging the arc welding rod or the tip of the welding wire 31. At the time of joining by arc welding, the projecting

piece portions

70B and 70C of the covering member 70 are joined to the back plate 60 by arc welding at the same time. For this reason, the covering member 70 may be temporarily fixed to the back plate 60 by spot welding or the like, or may not be temporarily fixed.

Also in this embodiment, welding marks appear on the front surface 5 A of the side frame member 5 by joining the back plate 60 to the back surface 5 B of the side frame member 5 by the welding portion 32 by arc welding in the hole 61 of the back plate 60. Even if this happens, this welding mark can be hidden by the frame-side blade 11 of the hinge 10 disposed on the surface 5A of the side frame member 5.

Since the cover member 70 is provided with a hole 71 larger than the hole 61 that is the weldable portion of the back plate 60, the weldable portion of the back plate 60 is also the back plate 60 in this embodiment. Among them, the cover member 70 is provided at a location not covered by the cover member 70, whereby the cover member 70 affects the operation of joining the back plate 60 to the back surface 5 B of the side frame member 5 by arc welding. Easily.

In the back plate 80 of the embodiment shown in FIG. 11, two upper and lower cut portions 81 are formed as in the embodiment of FIGS. Of these cut portions 81, the upper cut portion 81A is adjacent to each other among the upper side portion 80A, the left and

right side portions

80B and 80C, and the lower side portion 80D that form the outer contour 83 of the back plate 80. It is a part formed by intruding into the inside of the outer contour 83 of the back plate 80 from the two upper side parts 80A and the side side parts 80B, and the lower cut parts 81B are adjacent to each other 2 This is a portion formed by entering the inside of the outer contour 23 of the back plate 20 from the lower side portion 80D and the side side portion 80B.

And the front-end | tip part 82 which has comprised the right-angled shape or substantially right-angled shape of each cutting part 81 is a weldable part by arc welding. Each cut portion 81 is a portion of the frame-side vane plate 11 of the hinge 10 that has entered the inside of the outer contour 14 of the facing portion 11B facing the back plate 80. For this reason, by arc welding Each end portion 82 which is a weldable portion is provided inside the outer contour 14.

The covering member 90 includes a box portion 90A and upper and

lower protrusions

90B and 90C provided above and below the box 90A. The left and right lengths of these

protrusions

90B and 90C are the box 90A. Therefore, the front end portion 82 which is a weldable portion by arc welding is a portion of the back plate 80 that is not covered by the covering member 90.

The covering member 90 of this embodiment is fixedly arranged on the back plate 80 by two fixing portions 91 in advance before the back plate 80 is joined to the side frame member 5 by arc welding. As shown in FIG. 12, which is a cross-sectional view taken along the line S12-S12 of FIG. 11, these fixing portions 91 are provided with protrusions 92 formed by half-cutting the back plate 80 or the like. After being inserted into the hole 93 formed in the

piece portions

90B and 90C, the tip portion of the projection 92 protruding from the hole 93 is formed by caulking to enlarge and deform the tip portion.

Moreover, in this embodiment, as can be seen from FIG. 11, each cut portion 81 is located on the side of the back plate 80 where the distance between the left and

right side portions

80B and 80C is the length L1. It penetrates into the inside of the outer contour 83 of the back plate 80 over the length L2 toward the side portion 80C, and this length L2 is a little longer than half of the length L1. For this reason, the arc welding is performed by engaging the arc welding welding rod or the welding wire 31 as shown in FIG. When 80 is joined to the side frame member 5, the distance L3 from the side portion 80B of the welded portion 32 is half or substantially half of the length L1.

Also in this embodiment, there are five screw holes 26 provided in the back plate 80 for screwing the screws 15 shown in FIGS. 4 and 5, as shown in FIG. Of these screw holes 26, the four screw holes 26 are divided into upper, lower, left and right and are provided in the back plate 80. Of these four screw holes 26, one of the two sets of left and right screw holes 26 that form a set of two upper and lower screw holes 26 is provided at a distance L4 from the side portion 80B. The other set of screw holes 26 is also provided at a distance L4 from the side portion 80C opposite to the side portion 80B.

For this reason, in order to join the back plate 80 to the side frame member 5 by arc welding, when arc welding is performed on the distal end portion 82 of the excision portion 81 that is a weldable portion, the two screw holes 26 on the left and right sides. Are present at a distance that is equal to or substantially equal to the welded portion 32 that is generated by welding the distal end portion 82 of the cut portion 81.

For this reason, the two left and right screw holes 26 receive the welding heat equally or substantially uniformly, and one of the two left and right screw holes 26 receives a large amount of welding heat. Therefore, it is possible to prevent one or two of the above-described four screw holes 26 from being deformed by welding heat to make it difficult to screw the screws 15. The screws 15 can be screwed into the respective screw holes 26 in a predetermined manner.

Further, the two upper and lower cut portions 81 shown in FIG. 11 have side portions 81C extending linearly from the side portion 80B of the back plate 80 toward the side portion 80C. For this reason, before the arc welding is performed by locking the distal end portion of the arc welding welding rod or welding wire 31 shown in FIG. The tip of the welding rod or welding wire 31 can be used as a guide for sliding the guide.

In addition, since both of these guide portions extend linearly from the side portion 80B of the back plate 80 to the side portion 80C, in other words, extend linearly in the same direction, the cut portion 81 is provided. When arc welding the tip 82 of the welding rod, the tip of the welding rod or welding wire 31 is slid in the same direction by these guides to weld the tip of the welding rod or welding wire 31. The tip part 82 of the excision part 81, which is a possible part, can be reached and positioned by the tip part 82. For this reason, the slide guide work and positioning of the tip part of the welding rod or welding wire 31 can be performed. Work can be done easily and efficiently.

Further, the direction in which the side portion 81C extends is the direction from the back surface 5D side to the front surface 5C side of the side frame member 5 described in FIG. In the same manner as the embodiment shown in FIG. 6, the influence of the front surface 5C and the back surface 5D of the side frame member 5 is reduced. Can be done easily.

And also in this embodiment, the front-end | tip part 82 of the cut part 81 used as the weldable part is the outer outline 14 of the facing part 11B which faces the back plate 80 among the frame side blades 11 of the hinge 10. Since it is provided at the inner portion, when the back plate 80 is joined to the back surface 5B of the side frame member 5 by arc welding, a welding mark by the welded portion 32 may appear on the surface 5A of the side frame member 5. However, this welding mark can be hidden by the frame-side blade 11 of the hinge 10 disposed on the surface 5A of the side frame member 5.

FIG. 13 is a partially enlarged view of FIG. 11, and FIG. 14 is a plan view of FIG. In the embodiment shown in FIGS. 11 to 14, as described above, before the back plate 80 is joined to the side frame member 5 by arc welding, the cover member 90 is fixedly disposed on the back plate 80 by the fixing portion 91 in advance. Therefore, the cover member 90 is not joined to the back plate 80 by arc welding when the back plate 80 is joined to the side frame member 5 by arc welding. As can be seen from FIG. 13, the box portion 90 A and the projecting piece portions 90 B and 90 C of the covering member 90 are provided at positions away from the outer contour 83 of the back plate 80 with respect to the cutout portion 81 of the back plate 80. Yes. For this reason, as shown in FIG. 14, the back plate 80 is arced to the side frame member 5 by locking the distal end portion of the arc welding welding rod or welding wire 31 to the distal end portion 82 of the cut portion 81. Even when the welding rod or welding wire 31 is at a right angle with respect to the side frame member 5 or the back plate 80 when performing the joining operation by welding, in other words, the orientation of the welding rod or welding wire 31 is the side frame. Even if the member 5 or the back plate 80 is oriented in the thickness direction, the welding rod or welding wire 31 does not contact the box portion 90A and the projecting

piece portions

90B and 90C. It is possible to perform only the joining of the back plate 80 and the side frame member 5 by bringing the tip portion of 31 into contact with only the tip portion 82 of the cut portion 81.

Therefore, in this embodiment, the joining of the back plate 80 and the side frame member 5 by arc welding is completed before the melting by the welding heat reaches the box portion 90A and the projecting

piece portions

90B and 90C.

The reason why the joining between the back plate 80 and the side frame member 5 by arc welding can be terminated before the melting by welding heat reaches the box portion 90A and the projecting

piece portions

90B and 90C is described above. As described above, the box portion 90A and the projecting

piece portions

90B, 90C are provided at positions where the cutout portion 81 of the back plate 80 is displaced to the inside of the outer contour 83 of the back plate 80. This is because the amount of time required for the melting by heat to reach the box portion 90A and the protruding

piece portions

90B and 90C is sufficiently long. For this reason, when comparing the

protrusions

90B and 90C of the cover member 90 for the back plate 80 with the

protrusions

30B and 30C of the cover member 30 for the back plate 20 shown in FIG. The length from the projecting

piece portions

90B and 90C to the excision portion 81 is larger than the length from the projecting

piece portions

30B and 30C to the excision portion 21.

The embodiment according to FIGS. 11 to 14 includes an operation for fixing the cover member 90 to the back plate 80 by the fixing portion 91 and an operation for joining the back plate 80 to the side frame member 5 by arc welding. In the case where each is carried out in a different factory, it can be effectively employed. That is, after the work of fixing the cover member 90 to the back plate 80 by the fixing portion 91 is performed, the back plate 80 and the cover member 90 are sent to the factory separately from the factory where the fixing work is performed. 80 is joined to the side frame member 5 by an arc welding operation using a welding rod or welding wire 31.

FIG. 15 shows an embodiment in which the weldable portion 102 provided on the back plate 100 for joining the back plate 100 to the back surface 5B of the side frame member 5 is a weldable portion 102 by spot welding. The back plate 100 according to this embodiment is not provided with a cut-out portion. Therefore, the outer contour 103 of the back plate 100 is defined by the upper side portion 100A, the left and

right side portions

100B and 100C, and the lower side portion 100D. It has a rectangular outline. Further, the covering member 110 in this embodiment has the same shape and size as the covering member 90 in the embodiment of FIGS. 11 to 14. Therefore, the covering member 110 includes the box portion 110A and the box portion 110A. It consists of upper and lower protrusions 110B and 110C provided on the top and bottom, and the left and right lengths of these protrusions 110B and 110C are smaller than the distance between the left and right sides of the box part 110A.

In addition, before the back plate 100 is joined to the side frame member 5 by spot welding, the covering member 110 has a protruding portion 110B, 110C having a fixing portion 101 similar to the fixing portion 91 shown in FIGS. Fixed to the back plate 100.

In the back plate 100, the portions that are not covered by the protruding pieces 110 B and 110 C of the covering member 110 are two weldable portions 102. These weldable portions 102 are weldable portions where spot welding is performed.

That is, as shown in FIG. 16 which is a cross-sectional view taken along line S16-S16 in FIG. 15, welding electrodes for spot welding are provided at the positions of the back plate 100 and the side frame member 5 corresponding to the weldable portion 102. The back plate 100 is joined to the side frame member 5 by spot welding by pressing the 120 and 121 and energizing the

welding electrodes

120 and 121.

Also in this embodiment, as shown in FIG. 15, the weldable portion 102 is located on the inner side of the outer contour 14 of the facing portion 11 B facing the back plate 80 among the frame-side blades 11 of the hinge 10. Therefore, when the back plate 80 is joined to the back surface 5B of the side frame member 5 by spot welding, welding marks appearing on the surface 5A of the side frame member 5 are formed on the surface 5A of the side frame member 5. It can be concealed by the frame-side vane 11 of the hinge 10 that is arranged.

In addition, like this embodiment, when making the weldable part which is a joinable part a weldable part by spot welding, the three members of the side frame member 5, the back plate, and the covering member are joined simultaneously by spot welding. May be.

Further, in each of the embodiments described above, the

back plates

20, 40, 60, 80, 100 in the respective embodiments shown in the drawings are outside the

back plates

20, 40, 60, 80, 100. Of the four sides forming the

contours

23, 43, 63, 83, 103, three sides are positions outside the outer contour 14 of the facing portion 11 B in the frame-side blade 11 of the hinge 10. Of these sides, one or two or all of the sides are aligned with the outer contour 14 or the back plate is located inside the outer contour 14. The invention can be applied.

The present invention is used when connecting a building material part such as a hinge used for opening and closing a door such as a front door to a building material such as an outer frame for an opening that is opened and closed by the door using a back plate. can do.

Claims

Of the front and back surfaces of the building material, a building material back plate that faces the building material part arranged on one side and is arranged on the other side, and is bonded to the building material and bonded through the building material In the building material back plate for reinforcing and joining the building material parts to the building material by means of tools,
A building material back plate characterized in that a bondable portion capable of being bonded to the building material is provided inside an outer contour of the building material component.
2. The building material back plate according to claim 1, wherein the bondable part is a weldable part.
3. The building material back plate according to claim 2, wherein the weldable part is a part capable of locking a tip of a welding rod or welding wire used in arc welding. .
3. The building material back plate according to claim 2, wherein holes for inserting the coupler are formed, and there are at least two holes, and the weldable part is at an equal or substantially equal distance from these holes. A back plate for building materials, characterized in that is provided.
The building material back plate according to claim 2, wherein a part of the cut part has a cut-out part, the weldable part is a weldable part by arc welding, and at least a part of the cut-out part is A back plate for building materials characterized by being a weldable part.
6. The building material back plate according to claim 5, wherein the cut portion is formed by intruding into the inside of the outer contour from two sides that form an outer contour and are adjacent to each other. A back plate structure for building materials, characterized by
6. The building material back plate according to claim 5, wherein the cut portion is a portion formed by intruding into an inside of the outer contour from one side portion forming the outer contour. Characteristic building material back plate.
6. The building material back plate according to claim 5, wherein the cut portion is a hole formed inside the outer contour.
6. The building material back plate according to claim 5, wherein there are at least two cut portions, and the cut portions are formed by sliding a tip of a welding rod or a welding wire used in the arc welding. A building material having a guide portion that guides to a weldable portion, and the guide portions extend linearly or substantially linearly in the same or substantially the same direction and reach the weldable portion. Back plate.
6. The building material back plate according to claim 5, wherein the building material back plate is manufactured by punching a sheet metal, and the cut portion is formed by the punching process when the sheet metal is punched.
3. The building material back plate according to claim 2, wherein the weldable portion is a weldable portion by spot welding.
The building material back plate according to claim 1, wherein a through-hole for penetrating the coupler is formed, and a covering member is disposed on a surface opposite to the building material side, and the covering member is formed through the penetrating member. A back plate for building materials characterized by covering holes.
The building material back plate according to claim 12, wherein the other surface of the building material is a surface forming a space filled with a filler.
13. The building material back plate according to claim 12, wherein the building material is joined to the building material by welding, and the covering member is joined to the opposite surface by the welding for the joining. .
The building material back plate according to claim 12, wherein the building material is joined to the building material by welding, and the covering member is fixed to the opposite surface in advance before welding work for the joining. A back plate for building material, which is disposed at a position deviated from a weldable portion that is a joinable portion.
2. The building material back plate according to claim 1, wherein the building material part is a hinge.
Among the front and back surfaces of the building material, the building material part is arranged on one side, the back plate is arranged facing the building material part on the other side, and the back plate is joined to the building material, In the building back plate structure in which the building material parts are reinforced and joined to the building material by the back plate by the coupler penetrating the building material,
The back plate facing the building material component via the building material is provided with a bondable portion that can be bonded to the building material inside the outer contour of the building material component. A back plate structure for building material, wherein the back plate is bonded to the building material at a bondable portion.
The building material back plate structure according to claim 17, wherein the bondable portion is a weldable portion.
The building material back plate structure according to claim 18, wherein the building material is joined to another building material by welding, and the weldable part is of the same type as the welding for joining the building material and the other building material. A back plate structure for building materials, which is a weldable part by welding.
The building material back plate structure according to claim 17, wherein the back plate and the building material include a positioning portion for positioning the back plate with respect to the building material when the back plate is joined to the building material. A back plate structure for building materials, characterized in that is provided.
The building material back plate structure according to claim 17, wherein the other surface of the building material on which the back plate is disposed is a surface forming a space filled with a filler, A building material back, wherein a through hole for penetrating the coupler is formed, and a cover member for covering the through hole is fixed to a surface of the back plate opposite to the building material side. Board structure.
The building material back plate structure according to claim 21, wherein the cover member is fixed to a surface of the back plate opposite to the building material side before the back plate is joined to the building material. Does not have a part which covers the weldable part which has become the joinable part in the back board, The back board structure for building materials characterized by things.
The building material back plate structure according to claim 17, wherein the building material part is a hinge.