JP6810522B2 - door - Google Patents

Description

The present invention relates to a door.

Conventionally, heavy-duty doors and lightweight doors have become widespread as doors for opening and closing openings in buildings. These heavy-duty doors and lightweight doors are generally configured by covering a frame material with a surface material. The surface material includes a front surface material that covers the front side of the door and a rear surface material that covers the rear side of the door. In heavy-duty doors and lightweight doors for fire prevention, these front surface materials and rear surface materials are used. The fire prevention performance is enhanced by joining the doors to each other at the end of the door on the door end side and the end on the door end side.

Here, when it is not necessary to match the design of the heavy door with the design of the lightweight door, as in the case where only the heavy door is installed in the building, the heavy door is relatively easy to manufacture. That is, when it is not necessary to match the designs in this way, the design of the heavy door can be determined separately from the design of the lightweight door, so that the surfaces of the front surface material and the rear surface material of the heavy door are painted. Can be done in the factory. In this case, the hot-dip galvanized steel sheet that has not been surface-treated with resin is used as the front surface material and the rear surface material, and in the factory, the front surface material and the rear surface material that are these hot-dip galvanized steel sheets are used. After joining each other by welding, it was possible to paint the surfaces of the front surface material and the rear surface material (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2003-1456

On the other hand, when it is necessary to match the design of the heavy door with the design of the lightweight door, such as when both the heavy door and the lightweight door are installed close to each other in the building, it is relatively difficult to manufacture the heavy door. there were. That is, when it is necessary to match the designs in this way, the decorative steel plate constituting the front surface material and the rear surface material of the lightweight door is used as the front surface material and the rear surface material even in the heavy door. There is a need. However, the surface of the decorative steel sheet is surface-treated with a resin for decoration or the like, and when welding is performed on this surface, the resin melts or the like, which is not preferable. For this reason, it is conceivable to scrape off the resin on the surface of the front surface material and the rear surface material, which are decorative steel sheets, before welding, but such work is a manufacturing cost of heavy doors. It is not preferable because it contributes to the increase of.

The present invention is for solving the above-mentioned problems in the prior art, and by enabling the front surface material and the rear surface material, which are decorative steel plates, to be joined to each other by welding, the door It is an object of the present invention to provide a door which can reduce the manufacturing cost and improve the fire protection performance of the door.

In order to solve the above-mentioned problems and achieve the object, the door according to claim 1 is a door for opening and closing an opening of a building, and includes an inner member arranged inside the door and the said door. A front decorative steel plate that covers the inner member from the front side and a rear decorative steel plate that covers the inner member from the rear side are provided, and one of the end faces of the front decorative steel plate and the rear decorative steel plate is covered with the other. These end faces and the fixing material were joined to each other by welding in a state of being abutted against the fixing material fixed to the back surface of the door.

The door according to claim 2 is the door according to claim 1, wherein at the end of the door on the door end side, one of the front side decorative steel plate and the rear side decorative steel plate is used. These end faces and the fixing material are joined to each other by welding in a state of being abutted against the fixing material fixed to the other back surface.

The door according to claim 3 is the door according to claim 1 or 2, at the end of the door on the door end side, one of the front side decorative steel plate and the rear side decorative steel plate is used. , The end face and the back surface are joined to each other by welding in a state of being abutted against the back surface of either one.
The door according to claim 4 is a door for opening and closing an opening of a building, and includes an inner member arranged inside the door, a front decorative steel plate that covers the inner member from the front side, and the inner member. Is provided with a rear decorative steel plate that covers the rear side from the rear side, and one of the front decorative steel plate and the rear decorative steel plate is abutted against the back surface of the other, and the end face of the other. Was projected outward from the one end face in the finding direction, and the one end face and the back surface of the other one were joined to each other by welding .

According to the door according to claim 1 and the door according to claim 4, one end surface or back surface of the front side decorative steel sheet and the rear side decorative steel sheet is joined to either back surface or fixing material by welding. , It is not necessary to weld the front side decorative steel sheet and the rear side decorative steel sheet to the surfaces. For this reason, it is not necessary to scrape off the resin on the surfaces of the front decorative steel plate and the rear decorative steel sheet before welding, and the manufacturing cost of the door using the decorative steel plate is reduced as compared with the case where the resin on the surface needs to be scraped off. It becomes possible to do. Further, since the door using the decorative steel plate can be manufactured by welding, the fireproof performance of the door can be improved as compared with the door manufactured by adhesion. Further, by joining the front decorative steel plate and the rear decorative steel plate by welding, it is possible to improve the strength of the door body.

According to the door according to claim 2, one end face of the front side decorative steel plate and the rear side decorative steel sheet is formed by joining with a fixing material at the end portion of the door on the door end side. Even when it is difficult to directly abut the back surface, the front decorative steel sheet and the rear decorative steel sheet can be joined by welding.

According to the door according to claim 3, since the joint can be performed at the end of the door on the door end side without using a fixing material, a space for attaching the lock to the end on the door end side is easy. It will be possible to secure the door.

It is a front view of the sliding door which concerns on embodiment of this invention. It is a rear view of the sliding door of FIG. It is an exploded perspective view of the sliding door of FIG. It is a figure which shows the upper frame, (a) is a front view, (b) is a plan view, (c) is a side view from the door end side. FIG. 1 is a cross-sectional view taken along the line AA of FIG. FIG. 1 is a cross-sectional view taken along the line BB of FIG. It is a partial front view of a sliding door. It is a figure which shows the door, (a) is a front view, (b) is a plan view, (c) is a bottom view, (d) is a side view from the door tail side. It is a figure which shows the door body, (a) is a front view, (b) is a plan view, (c) is a bottom view, (d) is a side view from the door end side, (e) is from the door end side. A side view, (f) is a cross-sectional view taken along the line DD of (a). It is an enlarged view of the region X of FIG. 9 (f). It is an enlarged view of the region Y of FIG. 9 (f). It is a cross-sectional view taken along the line CC of FIG. It is an enlarged view of the region Z1 of FIG. 8B. It is an enlarged view of the region Z2 of FIG. 8D. It is a figure which concerns on the modification, and is the figure of the part corresponding to FIG. It is a figure which concerns on other modification, and is the figure of the part corresponding to FIG.

Hereinafter, embodiments of the door according to the present invention will be described in detail with reference to the accompanying drawings. First, [I] the basic concept of the embodiment will be described, then [II] the specific content of the embodiment will be described, and finally, [III] a modified example of the embodiment will be described. However, the present invention is not limited to the embodiments.

[I] Basic concept of the embodiment First, the basic concept of the embodiment will be described. Embodiments typically relate to doors for opening and closing openings in buildings.

Here, the "building" is a concept including, for example, a detached house, an apartment house such as an apartment or a condominium, an office building, a commercial facility, a public facility, etc., although the specific structure and type thereof are arbitrary. .. Further, the "opening of a building" is an opening formed for installing a window or a doorway in a part of a building frame (for example, a wall, a ceiling, or a floor). Further, the "door" means a structure for suppressing or limiting the entrance / exit or visibility of an opening of a building, and is a concept including the so-called "door" and "door". The installation position and use of this door is arbitrary, but for example, a "entrance door" installed at the entrance, a "selfish door" installed at a doorway or a doorway, or an "indoor" for installation inside a building. Includes "doors" as well as the heavy and lightweight doors mentioned above. Further, the opening / closing structure of this door is arbitrary, and can be configured as a "swing door" or a "sliding door" such as a single-opening type hinged door or a double-opening type hinged door (so-called parent-child door). Hereinafter, in the embodiment, a case where the door is a “sliding door” for fire prevention will be described.

[II] Specific contents of the embodiment Next, the specific contents of the embodiment will be described.

(Constitution)
First, the configuration of the sliding door according to the embodiment will be described. 1 is a front view of the sliding door according to the embodiment of the present invention, FIG. 2 is a rear view of the sliding door of FIG. 1, FIG. 3 is an exploded perspective view of the sliding door of FIG. 1, and FIG. 4 is an upper frame described later. (A) is a front view, (b) is a plan view, (c) is a side view from the door end side, FIG. 5 is a cross-sectional view taken along the line AA of FIG. , It is a cross-sectional view taken along the line BB of FIG. In addition, in FIGS. 1 and 2, the wall finishing material for the front surface and the rear surface of the door pocket 34, which will be described later, is omitted. Further, in the following description, of the XYZ directions shown in FIGS. 1 and 2 and FIGS. 5 and 6, the X direction is the left-right direction, the finding direction, or the width direction (-X direction is the left direction or the width direction). Door tip direction, + X direction to the right or door tail direction), Y direction to the inside / outside direction, front-back direction, prospective direction, or thickness direction (+ Y direction to the rear side, outside, or non-inspection side, -Y direction The front side direction, the inner direction, or the inspection side), and the Z direction are referred to as a vertical direction or a height direction (+ Z direction is an upward direction, -Z direction is a downward direction).

As shown in FIG. 1, a sliding door 10 is arranged in the opening 2 formed in the skeleton 1 of the building. The sliding door 10 is roughly configured to include a frame body 20 and a door 50 (door body), and travels in the left-right direction with the door 50 supported in a hanging shape inside the frame body 20. By moving (sliding), the opening 2 can be opened and closed by the door 50. However, the description of the sliding door 10 unless otherwise specified will be omitted as it is the same as the conventional one.

(Structure-frame)
First, the configuration of the frame body 20 will be described. The frame body 20 is installed on the peripheral edge of the opening 2, and as shown in FIGS. 1 to 5, the door tip vertical frame 21, the door tail vertical frame 22, the upper frame 23, the width bar 24, and the front side. Mullion 25, rear side mullion 26, front side middle rail 27, rear side middle rail 28, front upper door pocket board 29, front lower door pocket board 30, rear upper door pocket board 31, rear lower door pocket board 32, and guide roller 33 is provided.

(Structure-frame body-vertical frame at the door)
The door tip vertical frame 21 is a long frame material fixed to the peripheral edge of the opening 2 on the door end side by a known method, and is attached along the vertical direction. A metal fitting (not shown) is provided on the door end vertical frame 21. In the state where the door 50 is positioned in the fully closed position (the position shown in FIG. 1 in the embodiment) (that is, in the fully closed state), the metal fitting has the dead bolt of the lock provided on the door 50, which will be described later. It is a dead bolt receiving means for receiving, and is arranged at a position corresponding to this dead bolt.

(Structure-frame body-door butt vertical frame)
The door butt vertical frame 22 is a long frame material fixed to the peripheral edge of the opening 2 on the door butt side by a known method, and is attached along the vertical direction.

(Structure-frame body-upper frame)
The upper frame 23 is a frame material fixed to the upper peripheral edge of the opening 2 by a known method, and is a long frame material having a length extending from the door tip vertical frame 21 to the door tail vertical frame 22. , These door tip vertical frames 21 and door butt vertical frames 22 are attached along the horizontal direction (finding direction). As shown in FIGS. 4 and 5, the upper frame 23 includes an upper frame base 23a, an upper frame upper piece 23b, an upper frame front side piece 23c, and an inspection cover 23d. Note that FIG. 4 shows the inspection cover 23d omitted.

The upper frame base 23a is a member constituting the rear portion of the upper frame 23, a member having a length corresponding to a substantially total length of the upper frame 23 in the left-right direction, and a height corresponding to a substantially total height of the upper frame 23 in the vertical direction. It is a member having a vertically long hollow rectangular shape. A rail 23e is fixed to the front side surface of the upper frame base 23a. The rail 23e is a taxiway for allowing the door-end door roller 53 and the door-end door roller 54, which will be described later, mounted on the upper surface of the door 50 to travel along the left-right direction. The rail 23e is a long frame material formed with a width corresponding to the traveling range of the door-end door roller 53 and the door-end door roller 54, and extends downward from the door-end side to the door-end side. It is installed in a slanted shape. By supporting the door 50 in a hanging manner with respect to the inclined rail 23e via the door door wheel 53 and the door tail door roller 54, the door 50 is constantly urged toward the door end side by its own weight. In the state where the user is not waving at the door 50, the door 50 naturally moves to the door end side and the opening 2 is fully closed. Further, a rack (rack gear) 23f is provided on the front side surface of the upper frame base 23a. The rack 23f is formed by carving teeth on the upper surface of a rod-shaped body, and the gears of a braking device 55, which will be described later, are engaged with the teeth to brake the door 50. Is done. The rack 23f is provided in a range corresponding to the moving range of the braking device 55 (see FIG. 7 described later).

The upper frame upper piece 23b is a member that constitutes the upper portion of the upper frame 23, is a member having a length corresponding to substantially the entire length of the upper frame 23 in the left-right direction, and has a vertical cross-sectional shape of a horizontal plate. ..

The upper frame front side piece 23c is a member that constitutes the front portion of the upper frame 23, is a member provided on the door end side of the upper frame 23, and is a member having a height shorter than substantially the total height in the vertical direction of the upper frame 23. It is arranged so as to extend downward from the front end of the upper frame upper piece 23b.

The inspection cover 23d is a member that constitutes the front part of the upper frame 23 together with the upper frame front side piece 23c, and is the height excluding the height of the upper frame front side piece 23c out of the substantially total height of the upper frame 23 in the vertical direction. It is a member having a width substantially corresponding to the width of the door 50 positioned at the fully closed position. The inspection cover 23d is detachably fixed to the front piece 23c of the upper frame so as to hang down with a known structure. When the inspection cover 23d is attached to the upper frame front side piece 23c, the inside of the upper frame 23 is covered so as not to be seen from the front side (inspection side), and the inspection cover 23d is removed from the upper frame front side piece 23c. In this state, the inside of the upper frame 23 is opened so that it can be seen from the front side (inspection side), and each part arranged inside the upper frame 23 can be inspected.

(Structure-frame body-pouch)
In FIGS. 1 to 3, the skirting board 24 is a frame material fixed to the lower peripheral edge of the opening 2 (specifically, the floor surface which is a part of the skeleton 1 of the building) by a known method. , A long frame material having a length extending from the front side mullion 25 and the rear side mullion 26 to the door butt vertical frame 22, and these front side mullion 25 and the rear side mullion 26 and the door butt vertical frame 22 are mutual. It is installed along the horizontal direction (finding direction) between them.

(Structure-frame body-front side mullion)
The front side mullion 25 is a frame material arranged in front of the door tail side end of the door 50 positioned in the fully closed position, and is a long frame having a length extending from the upper frame 23 to the width bar 24. It is a material, and is a frame material arranged along the vertical direction between the upper frame 23 and the skirting board 24. The front side mullion 25 is fixed to the upper frame 23 via a fixing tool such as a screw at the upper end thereof, and is fixed to the width bar 24 with a fixing tool such as a screw at the lower end portion thereof. It is fixed via.

(Structure-frame body-rear side mullion)
The rear side mullion 26 is a frame material arranged behind the door tail side end of the door 50 positioned in the fully closed position, and has a long shape extending from the upper frame 23 to the width bar 24. It is a frame material, and is a frame material arranged along the vertical direction between the upper frame 23 and the width bar 24. The rear side mullion 26 is fixed to the upper frame 23 via a fixing tool such as a screw at the upper end thereof, and is fixed to the width bar 24 at the lower end thereof by a screw or the like. It is fixed via a tool.

(Structure-frame body-front center rail)
The front side center rail 27 is a frame material arranged along the horizontal direction (finding direction) between the front side mullion 25 and the door butt vertical frame 22, and extends from the front side mullion 25 to the door butt vertical frame 22. It is a long frame material with a long length. The front side center rail 27 is fixed to the front side mullion 25 at the end portion on the door end side via a fixing tool such as a screw, and is fixed to the door tail vertical frame 22 at the end portion on the door tail side. It is fixed via a fixing tool such as a screw.

(Structure-frame body-rear side center rail)
The rear middle rail 28 is a frame material arranged along the horizontal direction (finding direction) between the rear side mullion 26 and the door butt vertical frame 22, and is a frame material from the rear side mullion 26 to the door butt vertical frame 22. It is a long frame material having a length of up to 22. The rear center rail 28 is fixed to the rear side mullion 26 at the end on the door end side via a fixing tool such as a screw, and the door butt vertical frame 22 is fixed at the end on the door butt side. It is fixed to the buttock via a fixing tool such as a screw.

(Structure-frame body-front upper door pocket board)
The front upper door pocket board 29 is a plate-like body arranged in a space surrounded by a door tail vertical frame 22, an upper frame 23, a front side mullion 25, and a front side middle rail 27. The front upper door pocket board 29 is fixed to the door tail vertical frame 22, the upper frame 23, the front side mullion 25, and the front side middle rail 27 at its peripheral edge via a fixing tool such as a screw.

(Structure-frame body-front lower door pocket board)
The front lower door pocket board 30 is a plate-like body arranged in a space surrounded by a door butt vertical frame 22, a front middle rail 27, a front side mullion 25, and a width bar 24. The front lower side door pocket board 30 is fixed to the door tail vertical frame 22, the front side center rail 27, the front side mullion 25, and the width bar 24 at the peripheral portion thereof via fixing tools such as screws. ..

(Structure-frame body-rear upper door pocket board)
The rear upper door pocket board 31 is a plate-like body arranged in a space surrounded by a door tail vertical frame 22, an upper frame 23, a rear side mullion 26, and a rear side middle rail 28. The rear upper door pocket board 31 is fixed to the door tail vertical frame 22, the upper frame 23, the rear side mullion 26, and the rear side middle rail 28 at the peripheral portion thereof via a fixing tool such as a screw. There is.

(Structure-frame body-rear lower door pocket board)
The rear lower door pocket board 32 is a plate-like body arranged in a space surrounded by the door tail vertical frame 22, the rear middle rail 28, the rear side mullion 26, and the width timber 24. The rear lower door pocket board 32 is fixed to the door tail vertical frame 22, the rear center rail 28, the rear side mullion 26, and the width bar 24 at the peripheral edge thereof via a fixing tool such as a screw. ing.

Among the parts of the frame material fixed in this way, the door tail vertical frame 22, the upper frame 23, the skirt 24, the front side mullion 25, the rear side mullion 26, the front side middle rail 27, the rear side middle rail 28, the front The door pocket 34 is configured as a space surrounded by the upper door pocket board 29, the front lower door pocket board 30, the rear upper door pocket board 31, and the rear lower door pocket board 32. Of the parts of the door pocket 34, one of the side portions of the door pocket 34 in the prospective direction (that is, the front side portion of the door pocket 34) is the upper frame 23, the width timber 24, the front middle rail 27, the front upper door pocket board 29, and It is configured to include a front lower door pocket board 30 (note that these upper frames 23, width timber 24, and front middle rail 27 are arranged side by side at intervals in the vertical direction). Further, the other side of the door pocket 34 in the prospective direction (that is, the rear side portion of the door pocket 34) is the upper frame 23, the width timber 24, the rear middle rail 28, the rear upper door pocket board 31, and the rear lower door pocket. The board 32 is provided (note that the upper frame 23, the width timber 24, and the rear middle rail 28 are arranged side by side at intervals in the vertical direction). Further, the door 50 can be freely taken in and out of the door pocket 34, and the door 50 is completely housed inside the door pocket 34 (however, regarding the peripheral portion of the handle 69 described later of the door 50). Is a state in which the door 50 is positioned in the fully open position (that is, fully open) in the state where the door 50 is not housed inside the door pocket 34 and is left on the door front side of the front side mullion 25 and the rear side mullion 26 door pocket 34. State). The front surface and the rear surface of the door pocket 34 are actually covered with a wall finishing material (for example, a decorative material for interior decoration), but since the wall finishing material is known, illustration and description thereof will be omitted.

(Structure-frame body-guide roller)
In FIG. 5, the guide roller 33 is a runout prevention means for preventing the lower end of the door 50 from swinging significantly in the front-rear direction. The guide roller 33 is arranged so that the substantially center position in the left-right direction is close to the end faces of the front side mullion 25 and the rear side mullion 26 on the door end side, and the door end of the width bar 24. It includes a support column 33a fixed to the end on the side, and a roller 33b that is rotatable about the support column 33a and is arranged along the horizontal direction. Then, with the roller 33b arranged inside the guide rail 57 provided at the lower end of the door 50, the lower end of the door 50 swings greatly in the front-rear direction by traveling the door 50 in the left-right direction. If this is the case, the roller 33b will hit the guide rail 57 to prevent the runout from becoming larger.

(Composition-Door)
Next, the configuration of the door 50 will be described. 7 is a partial front view of the sliding door 10, FIG. 8 is a view showing the door 50, (a) is a front view, (b) is a plan view, (c) is a bottom view, and (d) is a door butt. A side view from the side, FIG. 9 is a view showing a door body 60 described later, (a) is a front view, (b) is a plan view, (c) is a bottom view, and (d) is from the door end side. (E) is a side view from the door tail side, and (f) is a cross-sectional view taken along the line DD of (a). In FIG. 7, a part of the inspection cover 23d and the door pocket 34 is omitted or simplified. As shown in FIGS. 5 to 9, the door 50 is a door for opening and closing the opening 2 of the building, and is a door body 60 (door body body), a door end cover 51, a door butt cover 52, and a door door car. It is configured to include 53 (combustible member), door tail door wheel 54 (combustible member), braking device 55, opening prevention member 56, and guide rail 57. The door 50 may be provided with a window having a known structure.

(Composition-Door-Door body)
The door body 60 is an opening / closing body for opening / closing the opening 2 of the building, and includes an upper frame 61, a lower frame 62, a plurality of vertical frames 63 to 66, a front decorative steel plate 67, a rear decorative steel plate 68, and a lock (not shown). (Omitted), and a handle 69.

(Composition-Door-Door body-Upper frame)
The upper frame 61 is an inner member arranged inside the door body 60, and is a long frame material having a length substantially corresponding to the length in the left-right direction of the door body 60, and is an upper end of the door body 60. The parts are arranged along the horizontal direction (finding direction). The upper frame 61 is formed, for example, as a steel material having a downward U-shaped vertical cross section.

(Composition-Door-Door body-Lower frame)
The lower frame 62 is an inner member arranged inside the door body 60, and is a long frame material having a length substantially corresponding to the length in the left-right direction of the door body 60, and is a lower end of the door body 60. The parts are arranged along the horizontal direction (finding direction). The lower frame 62 is formed as, for example, a steel material having an upward U-shaped vertical cross section.

(Configuration-Door-Door body-Vertical frame)
The plurality of vertical frames 63 to 66 are internal members arranged inside the door body 60. The plurality of vertical frames 63 to 66 are arranged so as to be in contact with each other, respectively, in a state of being spaced apart from each other (note that the plurality of vertical frames 63 to 66 are arranged so as to be in contact with each other. May be). Each of the vertical frames 63 to 66 is formed, for example, as a member having a U-shaped or inverted U-shaped horizontal cross section. In the following, among the plurality of vertical frames 63 to 66, the vertical frame arranged on the door end side is referred to as "door end vertical frame" 63 as necessary, and the vertical frame arranged on the door end side most is referred to as "door end vertical frame" 63. If necessary, the vertical frames other than the door-end vertical frame 63 and the door-tail vertical frame 64 are referred to as "intermediate vertical frames" 65 and 66. Of these, the door tip vertical frame 63 is a long frame material having a length substantially corresponding to the vertical length of the door body 60, and is a member having an inverted U-shaped horizontal cross section. The side decorative steel plate 68 is fixed to the back surface of the decorative door tip piece 68d, which will be described later, by welding. The door butt vertical frame 64 is a long frame material having a length shorter than the vertical length of the door body 60 (the lower end of the door butt vertical frame 64 is located near the upper surface of the lower frame 62). The member has a U-shaped horizontal cross section, and is a fixing material fixed to the back surface of the decorative door tail piece 67d, which will be described later, of the front decorative steel plate 67. The intermediate vertical frames 65 and 66 have a length shorter than the vertical length of the door body 60 (the upper ends of the intermediate vertical frames 65 and 66 are located near the lower surface of the upper frame 61, and the lower ends of the intermediate vertical frames 65 and 66 are located. It is a long frame material (length located near the upper surface of the lower frame 62), and is a member having a U-shaped horizontal cross section, and has both sides with respect to the front decorative steel plate 67 and the rear decorative steel plate 68. It is fixed by tape (not shown). The specific manufacturing method of these plurality of vertical frames 63 to 66 is arbitrary, but it is manufactured, for example, by bending a hot-dip galvanized steel sheet. In particular, since the hot-dip galvanized steel sheet is not surface-treated with resin on any of the front surface, the back surface, and the end surface, it is not necessary to scrape off the resin before performing YAG welding. However, as the inner member arranged inside the door body 60, if there is no problem with the strength of the door body 60 or the joining structure described later, all or a part of the vertical frames 63 to 66 may be omitted, or the vertical frames 63 to 66 may be omitted. A heat insulating material or a core material may be used in place of all or a part of the frames 63 to 66, or in addition to all or a part of the vertical frames 63 to 66.

(Structure-Door-Door body-Front decorative steel plate)
The front decorative steel plate 67 is a decorative steel plate that covers the upper frame 61, the lower frame 62, and the plurality of vertical frames 63 to 66 from the front side, and is a decorative main piece 67a arranged along the vertical direction, and the decorative main piece 67a. The cosmetic upper piece 67b arranged along the horizontal direction from the upper end to the rear, the makeup lower piece 67c arranged along the horizontal direction from the lower end of the makeup main piece 67a, and the makeup main piece 67a. It is configured to include a decorative door tail piece 67d arranged along the vertical direction so as to extend from the side end on the door tail side to the rear. Of the side surfaces of the main decorative piece 67a, the upper decorative piece 67b, the lower decorative piece 67c, and the decorative door tail piece 67d, the surfaces exposed to the front side (upper frame 61, lower frame 62, and a plurality of vertical frames 63 to 66). The surface opposite to the opposite surface, hereinafter referred to as the surface, is subjected to surface treatment with resin (for example, coating with vinyl chloride resin or laminating with film-like resin) for decoration and the like. On the other hand, the surfaces not exposed on the front side (the upper frame 61, the lower frame 62, and the surfaces facing the plurality of vertical frames 63 to 66; hereinafter, the back surface) are not surface-treated with resin. Further, the end face of the main decorative piece 67a (the vertical surface located closest to the door end, the so-called edge), and the end faces of the upper decorative piece 67b, the lower decorative piece 67c, and the decorative door tail piece 67d (closest to the rear direction). The surface of the vertical surface, which is the so-called edge), is not surface-treated with resin, as is the case with the back surface. The specific manufacturing method of such a front decorative steel sheet 67 is arbitrary. For example, only one side surface of the front surface-shaped steel sheet is surface-treated with resin, and the upper and lower ends and the door tail side of the steel sheet are treated. The front side decorative steel sheet 67 can be manufactured by bending the end portion of the steel sheet.

(Structure-Door-Door body-Rear decorative steel plate)
The rear decorative steel plate 68 is a decorative steel plate that covers the upper frame 61, the lower frame 62, and the plurality of vertical frames 63 to 66 from the rear side, and is a decorative main piece 68a arranged along the vertical direction, and the decorative main piece 68a. A cosmetic upper piece 68b arranged along the horizontal direction from the upper end of the 68a to the front, a makeup lower piece 68c arranged horizontally from the lower end of the makeup main piece 68a to the front, and a makeup main piece. The decorative door tip piece 68d arranged along the vertical direction from the side end of the door end side of 68a to the front, and the decorative main piece 68a along the vertical direction from the side end of the door end side to the front. It is configured to include a decorative door tail piece 68e arranged in a row. Of the side surfaces of the main decorative piece 68a, the upper decorative piece 68b, the lower cosmetic piece 68c, the decorative door tip piece 68d, and the decorative door tail piece 68e, the surfaces exposed to the front side (upper frame 61, lower frame 62, and a plurality of surfaces). The surface opposite to the surface facing the vertical frames 63 to 66; hereinafter, the surface) is surface-treated with resin for decoration or the like (for example, coating with vinyl chloride resin or laminating with film-like resin). ) Is applied, while the surfaces that are not exposed on the front side (upper frame 61, lower frame 62, surfaces facing the plurality of vertical frames 63 to 66; hereinafter, the back surface) are surface-treated with resin. It has not been. Further, the end faces (the most forward-positioned vertical surface, so-called edge) of the decorative upper piece 68b, the decorative lower piece 68c, the decorative door tip piece 68d, and the decorative door butt piece 68e are made of resin as well as the back surface. No surface treatment is applied. The specific manufacturing method of such a rear decorative steel sheet 68 is arbitrary. For example, only one side surface of the front-shaped steel sheet is surface-treated with resin, and the upper, lower, left and right ends of the steel sheet are bent. By processing, the rear decorative steel sheet 68 can be manufactured.

(Composition-Door-Door body-Lock)
The lock is a fixing means for fixing the door body 60 to the fully closed position. This lock is arranged near the door tip vertical frame 63 inside the door body 60, and is provided with a dead bolt and a thumb turn (both are not shown), and the user operates the thumb turn to make the lock dead. The bolt can be taken in and out of the door body 60 through a notch (not shown) formed in the door tip vertical frame 63, and this dead bolt can be freely engaged with and detached from the metal fitting of the door tip vertical frame 21. The door body 60 can be fixed in the fully closed position by locking the door body 60.

(Configuration-Door-Door body-Handle)
The handle 69 (shown only in FIGS. 1, 2, and 7 and omitted in other drawings) is a gripping means for gripping the door body 60 for the user to operate, and is a front and rear surfaces of the door body 60. It is fixed at the position near the door in.

(Composition-Door-Door cover)
In FIG. 6, the door end cover 51 is a cover provided on the door end side of the door body 60. The door end cover 51 is a member having a U-shape with a vertical cross section facing right, and is a long member having a height substantially corresponding to the height of the door body 60. The length (thickness) in the expected direction inside the door cover 51 substantially corresponds to the length (thickness) in the expected direction of the door body 60, and the end portion of the door body 60 on the door end side is inside. In the housed state, it is fixed to the door end side of the door body 60 by a fixing portion (not shown) such as a screw. In addition, between the end of the door body 60 on the door end side and the door end cover 51, the side surface of the door end cover 51 on the door end side is aligned with the side surface of the lock on the door end side. A spacer 51a for the purpose is interposed.

(Composition-Door-Door butt cover)
The door tail cover 52 is a cover provided on the door tail side of the door body 60. The door tail cover 52 is a member having a U-shape with a vertical cross section facing left, and is a long member having a height substantially corresponding to the height of the door body 60. The length (thickness) in the expected direction inside the door tail cover 52 is longer than the length (thickness) in the expected direction of the door body 60, and the end portion of the door body 60 on the door tail side is accommodated inside. In this state, it is fixed to the door end side of the door body 60 by a fixing portion (not shown) such as a screw.

(Composition-Door-Door door car)
In FIG. 5, the door-to-door door roller 53 is a traveling means for enabling the door body 60 to travel (slide movable), and is an upper surface of the door body 60 in a space surrounded by the upper frame 23 and the door body 60. It is fixed at the position near the door. The door-to-door door wheel 53 includes a base piece 53a and wheels 53b. The base piece 53a is a member having a substantially L-shaped vertical cross section, and is fixed to the upper surface of the door body 60. More specifically, as shown in FIG. 9B, the decorative upper piece 67b of the front decorative steel plate 67 and the decorative upper piece 68b of the rear decorative steel plate 68 are notched at positions corresponding to the base pieces 53a 67f. , 68f are formed, and the base piece 53a is fixed to the upper frame 61 through the notches 67f and 68f. The wheel 53b is made of resin and is rotatably fixed to the front side surface of the base piece 53a.

(Composition-Door-Dojiri Door Car)
In FIG. 5, the door butt door wheel 54 is a traveling means for enabling the door body 60 to travel (slide movable), and is an upper surface of the door body 60 in a space surrounded by the upper frame 23 and the door body 60. It is fixed at the position near the door butt. The door tail door wheel 54 includes a base piece 54a and wheels 54b. The base piece 54a is a member having a substantially L-shaped vertical cross section, and is fixed to the upper surface of the door body 60. More specifically, as shown in FIG. 9B, the decorative upper piece 67b of the front decorative steel plate 67 and the decorative upper piece 68b of the rear decorative steel plate 68 are notched at positions corresponding to the base pieces 54a 67f. , 68f are formed, and the base piece 54a is fixed to the upper frame 61 through the notches 67f and 68f. The wheel 54b is made of resin and is rotatably fixed to the front side surface of the base piece 54a.

Then, as shown in FIG. 5, the door-to-door door car 53 and the door-end door car 54 configured in this way, and the door-to-door door car 53 and the door-end door car 54 arranged side by side along the finding direction (left-right direction) are With the door body 60 suspended and supported by the rail 23e so as to be mounted on the rail 23e, the user pushes and pulls the door body 60 in the left-right direction to place the door door wheel 53 and the door end on the rail 23e. The door wheel 54 travels while rotating, and the door body 60 can be slid along the left-right direction.

(Configuration-Door-Brake device)
In FIG. 7, the braking device 55 is a braking means for braking the door body 60, and is fixed at a position near the door tip on the upper surface of the door body 60. The braking device 55 includes a gear (pinion gear; not shown) and a resistance means (not shown) that adds resistance to the rotation of the gear. This gear meshes with the rack 23f described above, and when the door body 60 self-closes, the door body 60 is braked by applying resistance to the rotation of the gear by a resistance means. In addition, in this embodiment, since the mounting position of the rack 23f is provided only at the position near the door end where inspection can be performed with the inspection cover 23d open, the braking device 55 also has the door body 60. Although it is provided only at the position near the door end on the upper surface of the door body, the rack 23f and the braking device 55 may be provided at the position near the door end on the upper surface of the door body 60 if such restrictions can be ignored. ..

(Structure-Door-Opening prevention material)
In FIG. 5, the opening prevention material 56 is a member for preventing the lower end of the front decorative steel plate 67 and the lower end of the rear decorative steel plate 68 from opening in a direction away from each other, and is a vertically downward U-shaped member. Therefore, they are arranged along the horizontal direction between the lower end of the front decorative steel plate 67 and the lower end of the rear decorative steel plate 68. By fixing the opening prevention material 56 to the lower end of the front decorative steel plate 67 and the lower end of the rear decorative steel plate 68 by a known method, the lower end of the front decorative steel plate 67 and the lower end of the rear decorative steel plate 68 are fired. Even when heated by heat, it is possible to prevent the lower ends of the front decorative steel sheet 67 and the lower ends of the rear decorative steel sheet 68 from being deformed and separated from each other.

(Configuration-Door-Guide rail)
The guide rail 57 is a guide path for guiding the guide roller 33, and is a vertically downward U-shaped member, which is a horizontal direction between the lower end of the front decorative steel plate 67 and the lower end of the rear decorative steel plate 68. It is arranged along. When the roller 33b is arranged inside the guide rail 57 and the lower end of the door 50 tries to swing significantly in the front-rear direction by running the door 50 in the left-right direction, the roller 33b moves the guide rail 57. It is prevented that the runout becomes larger by hitting.

(Structure-door-decorative steel plate joint structure)
Next, the joining structure of the decorative steel plate in the door 50 will be described. This joint structure is generally composed of an end surface or a back surface of one of the front side decorative steel plate 67 and the rear side decorative steel plate 68, and a door tail vertical frame 64 fixed to the back surface of the other side or the back surface. Is a structure that joins each other by welding.

(Structure-Door-Joint structure of decorative steel plate-Join structure on the door end side)
First, the joint structure between the front decorative steel plate 67 and the rear decorative steel plate 68 on the door end side of the door 50 will be described. FIG. 10 is an enlarged view of the region X of FIG. 9 (f). As shown in FIG. 10, the decorative main piece 67a of the front decorative steel plate 67 has its front surface facing the front side, its back surface facing the rear side, and its end face facing the door end side. It is placed facing the. Further, the end face of the decorative main piece 67a of the front decorative steel plate 67 protrudes slightly toward the door end side from the decorative door tip piece 68d of the rear decorative steel plate 68 (for example, it protrudes toward the door end side by several mm). Hereinafter, the protruding portion is referred to as a makeup main piece protruding portion 67e). The protruding length of the decorative main piece protruding portion 67e is arbitrary as long as the YAG welding of the decorative main piece 67a and the decorative door tip piece 68d, which will be described later, is possible.

On the other hand, the decorative door tip piece 68d of the rear decorative steel plate 68 has its front surface facing the door end side, its back surface facing the door end side, and its end surface facing the front decorative steel plate 67. The makeup main piece 67a is arranged so as to face the back surface of the makeup main piece protruding portion 67e. Here, the length of the decorative door tip piece 68d of the rear decorative steel plate 68 in the expected direction is shorter than the length (thickness) of the door body 60 in the expected direction by the plate thickness of the decorative main piece 67a. Therefore, the end surface of the decorative door tip piece 68d is abutted so as to be substantially orthogonal to the back surface of the decorative main piece protruding portion 67e of the decorative main piece 67a of the front decorative steel plate 67 on substantially the entire surface in the vertical direction thereof. In contact with the state.

The back surface of the decorative main piece protruding portion 67e of the decorative main piece 67a of the front decorative steel plate 67 and the end surface of the decorative door tip piece 68d of the rear decorative steel plate 68 are a joint region between them (hereinafter, , In the door end side joint region S1), they are fixed to each other by being welded over substantially the entire length by known YAG welding. In particular, in YAG welding, heat is difficult to diffuse by irradiating a relatively small spot with a laser, so the welding mark (build-up) can be made relatively small, and it is necessary to cut the welding mark with a sander or the like. There is an advantage that there is no. Here, since the back surface of the decorative main piece 67a of the front decorative steel plate 67 and the end surface of the decorative door tip piece 68d of the rear decorative steel plate 68 are not surface-treated with resin, they are welded by YAG welding. Since it is not necessary to scrape off the resin in advance, it is possible to reduce the manufacturing cost of the door 50 using the front side decorative steel plate 67 and the rear side decorative steel plate 68 as compared with the case where the resin needs to be scraped off. become. Further, since the door 50 using the front decorative steel plate 67 and the rear decorative steel plate 68 can be manufactured by welding, it is possible to improve the fireproof performance of the door 50 as compared with the door manufactured by adhesion. Become. As shown in FIG. 6, the door end side joint region S1 between the front side decorative steel plate 67 and the rear side decorative steel plate 68 on the door end side of the door body 60 is provided on the door end side of the door body 60. It is covered by the door end cover 51 so as not to be exposed to the outside.

(Structure-Door body-Joint structure of decorative steel plate-Join structure on the door end side)
Next, the joint structure between the front decorative steel plate 67 and the rear decorative steel plate 68 on the door tail side of the door body 60 will be described. FIG. 11 is an enlarged view of the region Y in FIG. 9 (f). As shown in FIG. 11, the decorative door tail piece 67d of the front decorative steel plate 67 has its front surface facing the door tail side, its back surface facing the door end side, and its end surface. Is placed with the rear side facing. Here, the length (thickness) of the decorative door tail piece 67d of the front decorative steel plate 67 in the expected direction is slightly shorter than the length (thickness) of the door body 60 in the expected direction (for example, the decorative steel plate 68 on the rear side). It is located a few mm closer to the front side than the main piece 68a. Hereinafter, the difference between the length of the decorative door tail piece 67d in the prospective direction and the length of the door body 60 in the prospective direction is referred to as the door tail first distance L1. ).

As described above, the door tail vertical frame 64 is fixed to the decorative door tail piece 67d of the front decorative steel plate 67 formed in this way. Here, as shown in FIGS. 9 and 11, among the plurality of vertical frames 63 to 66, the vertical frames other than the door tail vertical frame 64 (that is, the door tip vertical frame 63 and the intermediate vertical frames 65 and 66) are The length in the expected direction is substantially the same as the length in the expected direction of the door body 60, whereas the length in the expected direction of the door butt vertical frame 64 is expected to be the decorative door butt piece 67d. Similar to the length in the direction, it is slightly shorter than the length (thickness) of the door body 60 in the expected direction (it is shorter by the above-mentioned first door tail distance L1). Therefore, as shown in FIG. 11, the door tail vertical frame 64 thus formed is arranged so that the front side piece 64a abuts on the back surface of the decorative main piece 67a of the front decorative steel plate 67. The rear side piece 64b is arranged at a position substantially corresponding to the end surface of the decorative door tail piece 67d of the front decorative steel plate 67.

On the other hand, the decorative door butt piece 68e of the rear decorative steel plate 68 has its front surface facing the door butt side, its back surface facing the door front side, and its end surface facing the door butt vertical frame. It is arranged so as to face the side surface of 64. Here, the length of the decorative main piece 68a of the rear decorative steel plate 68 in the left-right direction is slightly shorter than the length of the decorative main piece 67a of the front decorative steel plate 67 in the left-right direction (for example, of the front decorative steel plate 67). It is a few mm shorter than the main makeup piece 67a. Hereinafter, the difference between the left-right length of the main makeup piece 68a and the left-right length of the main makeup piece 67a is referred to as a door tail second distance L2). By providing the door tail second distance L2 in this way, the position of the decorative door tail piece 68e of the rear decorative steel plate 68 in the left-right direction is slightly smaller than the position of the end portion of the door body 60 on the door tail side. The position is closer to the front side (for example, the position is closer to the front side than the decorative door tail piece 67d of the front decorative steel plate 67). Further, the length of the decorative door tail piece 68e of the rear decorative steel plate 68 in the expected direction substantially corresponds to the above-mentioned first door tail distance L1. Therefore, the end surface of the decorative door tail piece 68e of the rear decorative steel plate 68 is substantially orthogonal to the rear surface of the rear side piece 64b of the door tail vertical frame 64 on substantially the entire surface in the vertical direction thereof. They are in contact with each other in a butted state.

The rear surface of the side piece 64b of the door butt vertical frame 64 arranged in this way and the end surface of the decorative door butt piece 68e of the rear decorative steel plate 68 are a joint region between them (hereinafter, the door butt side). In the joint region S2), they are fixed to each other by welding over a substantially entire length by known YAG welding. Here, all the side surfaces of the door tail vertical frame 64 (including the rear surface of the side piece 64b) and the end faces of the decorative door tail piece 68e of the rear decorative steel plate 68 are surface-treated with resin. Since there is no need to scrape off the resin in advance for welding by YAG welding, the door using the front side decorative steel plate 67 and the rear side decorative steel plate 68 is compared with the case where the resin needs to be scraped off. It is possible to reduce the manufacturing cost of 50. Further, since the door 50 using the front decorative steel plate 67 and the rear decorative steel plate 68 can be manufactured by welding, it is possible to improve the fireproof performance of the door 50 as compared with the door manufactured by adhesion. Become. As shown in FIG. 6, the door tail side joint region S2 between the front decorative steel plate 67 and the rear decorative steel plate 68 on the door tail side of the door body 60 is provided on the door tail side of the door body 60. It is covered by the door butt cover 52 so as not to be exposed to the outside.

(Structure-Door body-Cohesive steel plate joint structure-Upper joint structure)
Further, the joining structure of the front decorative steel plate 67 and the rear decorative steel plate 68 on the upper side of the door body 60 and the upper frame 61 will be described. As shown in FIGS. 9D and 9E, the decorative upper piece 67b of the front decorative steel plate 67 is arranged so that the end surface on the rear side is located slightly forward of the central position in the prospective direction of the upper frame 61. There is. Then, the end face of the decorative upper piece 67b is welded to the upper surface of the upper frame 61 by known arc welding, so that the front decorative steel plate 67 is fixed to the upper frame 61. Further, the decorative upper piece 68b of the rear decorative steel plate 68 is arranged so that the front end surface thereof is slightly rearward from the central position in the prospective direction of the upper frame 61. Then, the end face of the decorative upper piece 68b is welded to the upper surface of the upper frame 61 by known arc welding, so that the rear decorative steel plate 68 is fixed to the upper frame 61. As shown in FIG. 5, the joint region between the front decorative steel plate 67 and the rear decorative steel plate 68 on the upper side of the door body 60 (hereinafter, the upper joint region S3) is not exposed to the outside by the upper frame 23. It is covered like.

(Structure-Door body-Coupling steel plate joint structure-Lower joint structure)
Further, the joining structure of the front decorative steel plate 67 and the rear decorative steel plate 68 and the lower frame 62 on the lower side of the door body 60 will be described. As shown in FIG. 5, the lower end of the front decorative steel plate 67 and the lower end of the rear decorative steel plate 68 are located below the lower frame 62. Then, at a position above the lower end, the back surface of the front decorative steel plate 67, the back surface of the rear decorative steel plate 68, and the lower frame 62 are joined by double-sided tape (not shown), so that the front decorative steel plate 67 and the rear The side decorative steel plate 68 is fixed to the lower frame 62.

(Configuration-Door body-Manufacturing method)
Next, a manufacturing method (assembly procedure) of the door body 60 will be described. First, the door tail vertical frame 64 is fixed by welding at a predetermined position on the decorative door tail piece 67d of the front decorative steel plate 67. Specifically, the door tail vertical frame 64 is formed with a hole (not shown) along the longitudinal direction thereof, and a known arc is formed from the door end side of the door tail vertical frame 64 through the hole (not shown). By welding, the door tail vertical frame 64 is plug-welded to the front decorative steel plate 67 and fixed.

Further, the door tip vertical frame 63 is fixed at a predetermined position on the decorative door tip piece 68d of the rear decorative steel plate 68 by welding. Specifically, the door tip vertical frame 63 is formed with a hole (not shown) along the longitudinal direction thereof, and a known arc is formed from the door tail side of the door tip vertical frame 63 through the hole (not shown). The door end vertical frame 63 is plug-welded to the rear decorative steel plate 68 by welding to fix it.

Next, the front decorative steel plate 67 to which the door tail vertical frame 64 is fixed as described above is placed on the pedestal (not shown) so that the surface of the decorative main piece 67a of the front decorative steel plate 67 comes into contact with the pedestal. Then, the upper frame 61, the lower frame 62, and the intermediate vertical frames 65 and 66 are fixed at predetermined positions on the back surface of the front decorative steel plate 67 with double-sided tape. Specifically, double-sided tape is attached to the front side surfaces of the upper frame 61, the lower frame 62, and the intermediate vertical frames 65 and 66 (the side surfaces that abut the back surface of the front decorative steel plate 67), and the upper frame 61 and the lower frame 62 are attached. , And the intermediate vertical frames 65 and 66 are fixed by placing them at predetermined positions on the back surface of the front decorative steel plate 67. At this time, the double-sided tape is also attached to the rear side surfaces of the upper frame 61, the lower frame 62, and the intermediate vertical frames 65 and 66 (the side surfaces that come into contact with the back surface of the rear decorative steel plate 68). However, leave the release paper on the back side of this double-sided tape.

Next, the rear decorative steel plate 68 to which the door end vertical frame 63 is fixed as described above is placed on the front decorative steel plate 67 on the pedestal so that the back surface thereof faces the pedestal side. At this time, the rear decorative steel plate 68 is aligned with the front decorative steel plate 67. This alignment may be performed with reference to either the door end side or the door end side, but it is preferable to perform the alignment with reference to the door end side where the lock is provided. In particular, by aligning the door end side as a reference and aligning the door end side later in this way, the alignment of the rear decorative steel plate 68 with respect to the front decorative steel plate 67 becomes easy. That is, in the joint structure on the door butt side, the position of the decorative door butt piece 68e of the rear decorative steel plate 68 in the left-right direction is slightly closer to the door end side than the position of the end portion on the door butt side of the door body 60. Since there is a margin of the second door butt distance L2 as the distance between the position of the decorative door butt piece 68e in the left-right direction and the position of the end portion of the door body 60 on the door butt side, the front side The alignment of the rear decorative steel plate 68 with respect to the decorative steel plate 67 can be shifted within the range of the door tail second distance L2, and the alignment becomes easy.

After that, the rear surface of the rear side piece 64b of the door butt vertical frame 64 fixed to the front decorative steel plate 67 and the end surface of the decorative door butt piece 68e of the rear decorative steel plate 68 are joined to the door butt side. Welding is performed by YAG welding in the region S2. However, by performing this welding as temporary welding by spot welding, it is possible to rotate and open the rear decorative steel plate 68 with respect to the front decorative steel plate 67 with the welded portion as a fulcrum. Then, with the rear decorative steel plate 68 rotated and opened in this way, the release paper of the double-sided tape attached to the rear side surfaces of the upper frame 61, the lower frame 62, and the intermediate vertical frames 65 and 66 is peeled off. By rotating and closing the rear decorative steel plate 68 again, the upper frame 61, the lower frame 62, and the intermediate vertical frames 65 and 66 are fixed to the back surface of the rear decorative steel plate 68 with double-sided tape. After that, the rear surface of the rear side piece 64b of the door butt vertical frame 64 fixed to the front decorative steel plate 67 and the end surface of the decorative door butt piece 68e of the rear decorative steel plate 68 are joined to the door butt side. In the region S2, welding is performed again by YAG welding.

Next, the back surface of the decorative main piece projecting portion 67e of the decorative main piece 67a of the front decorative steel plate 67 and the end surface of the decorative door tip piece 68d of the rear decorative steel plate 68 are welded by YAG in the door end side joint region S1. Weld. By performing this welding as the main welding from the beginning over substantially the entire length, the joining of the front decorative steel plate 67 and the rear decorative steel plate 68 in the door end side bonding region S1 is completed.

Further, the end surface of the decorative upper piece 67b of the front decorative steel plate 67 and the end surface of the decorative upper piece 68b of the rear decorative steel plate 68 are welded to the upper surface of the upper frame 61 in the upper joining region S3. As a result, the joining of the front decorative steel plate 67 and the rear decorative steel plate 68 on the upper side of the door body 60 and the upper frame 61 is completed. This completes the production of the door body 60.

According to such a manufacturing method, all YAG welding can be performed from upward to downward, so that YAG welding can be easily and accurately performed. However, the manufacturing method described above can be appropriately changed, for example, by performing the joining on the door end side and the joining on the door end side in the reverse order.

(How to install the door pocket board)
Next, a method of attaching the door pocket board will be described. In FIG. 3, first, by a known method, the door tip vertical frame 21, the door tail vertical frame 22, the upper frame 23, the width timber 24, the front side mullion 25, the rear side mullion 26, the front side middle rail 27, and the rear Attach the side center rail 28.

Next, the front upper door pocket board 29, the front lower door pocket board 30, the rear upper door pocket board 31, and the rear lower door pocket board 32 are attached. The specific procedure for attaching each of these door pocket boards is as follows. FIG. 12 is a cross-sectional view taken along the line CC of FIG. In FIG. 12, all parts other than each door pocket board are omitted.

First, regarding the front lower door pocket board 30, the front lower door pocket board 30 is placed on the width wood 24 so that the lower surface of the front lower door pocket board 30 comes into contact with the upper surface of the width bar 24 from the front side. Then, with this contact point as a fulcrum, the front lower door pocket board 30 is rotated and moved so that the upper end of the front lower door pocket board 30 comes into contact with the lower end of the front middle rail 27. After that, at the contact points between the front lower door pocket board 30 and the width bar 24 and the contact points between the front lower door pocket board 30 and the front middle rail 27, these are mutually fixed by fixing portions such as screws. This completes the installation of the front lower door pocket board 30. Further, the rear lower door pocket board 32 is attached to the width timber 24 and the rear middle rail 28 from the rear side by the same procedure as the front lower door pocket board 30.

Regarding the front upper door pocket board 29, first, from the front side, the upper end (hooking means) of the front upper door pocket board 29 is provided on the upper frame upper piece 23b of the upper frame 23 (first frame material). It is locked to the locking piece 23i (the piece formed on the front side of the upper frame 23 (hooking means)). That is, the upper end of the front upper door pocket board 29 is formed in a U-shape with a vertical cross section downward, and the upper frame locking piece 23i of the upper frame 23 is formed in a U-shape with a vertical cross section upward. The upper end of the upper door pocket board 29 can be detachably locked to the upper frame locking piece 23i. By locking in this way, the front upper door pocket board 29 can be hung from the upper frame 23, and the operator can take his / her hand off the front upper door pocket board 29. Then, the front upper door pocket board 29 is moved while being lifted upward so that the lower surface of the front upper door pocket board 29 is brought into contact with the upper surface of the front middle rail 27 (second frame material). It is placed on the front center rail 27. Even in this mounted state, the downward U-shaped portion of the vertical cross section at the upper end of the front upper door pocket board 29 and the upward U-shaped portion of the vertical cross section of the upper frame locking piece 23i are mutually overlapped in the expected direction. Therefore, since the front upper door pocket board 29 does not come off the upper frame 23 and fall to the front side, the operator can take his / her hand off the front upper door pocket board 29. After that, at the contact points between the front upper door pocket board 29 and the upper frame locking piece 23i and the contact points between the front upper door pocket board 29 and the front middle rail 27, these are mutually fixed (or welded) such as screws. ) To fix. This completes the installation of the front upper door pocket board 29. Regarding the rear upper door pocket board 31, the rear upper door pocket board 31 is placed on the rear middle rail 28 so that the lower surface of the rear upper door pocket board 31 comes into contact with the upper surface of the rear middle rail 28 from the rear side. To do. Then, with this contact point as a fulcrum, the rear upper door pocket board 31 is moved while rotating so that the upper end of the rear upper door pocket board 31 comes into contact with the lower end of the upper frame 23. After that, at the contact points between the rear upper door pocket board 31 and the rear middle rail 28 and the contact points between the rear upper door pocket board 31 and the upper frame 23, these are mutually fixed by fixing portions (or welding) such as screws. Fix.

As described above, by starting the mounting of the front upper door pocket board 29 from the step of locking the front upper door pocket board 29 to the upper frame locking piece 23i of the upper frame 23, this mounting work is performed more easily and safely. Will be possible. That is, it is conceivable to start from the step of bringing the front upper door pocket board 29 into contact with the upper surface of the front middle rail 27, but if it is started from such a step, the front upper door pocket board 29 may fall. Since it is always present, the worker cannot take his hand off the front upper door pocket board 29 during the mounting work, which makes the mounting work difficult. Further, another door pocket board that needs to simultaneously perform the step of fixing the upper end portion of the upper door pocket board 29 to the upper frame 23 and the step of fixing the lower end portion of the upper door pocket board 29 to the front middle rail 27. As for the mounting method of the above, as in the former method, the worker could not take his / her hand off the front upper door pocket board 29 during the mounting work, and the mounting work was difficult. On the other hand, when the step of locking the front upper door pocket board 29 to the upper frame locking piece 23i of the upper frame 23 is started as described above, the worker starts from the front upper door pocket board 29 during the installation work. It becomes possible to release the hand, and the mounting work can be performed more easily and safely.

The mounting of the front upper door pocket board 29, the front lower door pocket board 30, the rear upper door pocket board 31, and the rear lower door pocket board 32 is not limited to the mounting order described above, and may be in any order. It can also be replaced with. Alternatively, a plurality of door pocket boards may be attached at the same time (for example, one worker attaches the front upper door pocket board 29 from the front side, and at the same time, another worker attaches the rear upper door pocket board 31 from the rear side. Etc.). Further, the mounting method is not limited to the mounting method described above, and may be performed by any method similar to the conventional method.

(Fireproof structure)
Finally, the fireproof structure of the sliding door 10 will be described. Since the sliding door 10 according to the present embodiment is a sliding door 10 for fire prevention, it is necessary to prevent parts that are melted and burned by the heat of the fire from being exposed or falling to the outside of the sliding door 10. Therefore, the sliding door 10 according to the present embodiment has the following fireproof structure.

(Fireproof structure-door car holder)
As shown in FIGS. 5 and 8, the door-to-door door roller 53 and the door-end door roller 54 include door roller receivers 53c and 54c. The door roller receivers 53c and 54c are used to prevent the wheels 53b and 54b from being exposed or falling to the outside of the sliding door 10 when the wheels 53b and 54b made of resin are melted and burned. It is a preventive measure. Specifically, the door roller receivers 53c and 54c are steel materials having a vertical cross-sectional shape of an upward U-shape, and are arranged between the wheels 53b and 54b and the door body 60. The positions and lengths of the door roller receivers 53c and 54c in the expected direction extend forward and backward around the wheels 53b and 54b so that the wheels 53b and 54b that have been melted and burned can be received. .. Similarly, the positions and lengths of the door roller holders 53c and 54c in the finding direction are left and right with respect to the wheels 53b and 54b so that the wheels 53b and 54b that have been melted and burned can be received. It has been extended to. In the present embodiment, as shown in FIG. 8, the door-to-door door car 53 and the door-to-door door car 54 are separately attached with the door-to-door receivers 53c and 54c, respectively. One long door roller holder 53c, 54c that continuously reaches 54 may be attached.

(Fireproof structure-door car blindfold)
FIG. 13 is an enlarged view of the region Z1 of FIG. 8 (b). FIG. 14 is an enlarged view of the region Z2 of FIG. 8 (d). As shown in FIGS. 5 and 8, the door roller door roller 54 includes a door roller blind plate 54d (fire spread suppressing means). When the wheels 53b and 54b made of resin are melted and burned, the door roller blind plate 54d exposes or drops the wheels 53b and 54b to the outside of the sliding door 10, so that the wheels 53b and 54b are exposed to the wheels 53b and 54b. It is a member for preventing the fire from spreading through the fire. That is, when a fire breaks out on the rear side of the sliding door 10 and the frame body 20 is heated by the heat generated by the fire, the front side mullion 25 is particularly greatly deformed, and the upper frame 23 is deformed accordingly. The inspection cover 23d may also be significantly deformed. More specifically, of the left and right ends of the inspection cover 23d, the end on the door tail side, which is close to the front side mullion 25, bends and opens toward the rear side to form the inspection cover 23d and the front side mullion 25. There is a possibility that a gap may be formed between the door body 60 and the door body 60. In the case where the gap is formed in this way, if the wheel 54b of the door tail door wheel 54 close to the front side mullion 25 is melted and burned, the flame due to the melted combustion is blown out from the gap or melted to the outside of the sliding door 10. There is a possibility that the resin may overflow from the gap to the outside of the sliding door 10, or the wheel 54b may be exposed to the outside of the sliding door 10 through the gap and fall, so that the fire may occur in the sliding door 10. There was a risk of fire spreading to the front side of. Therefore, in order to solve such a problem, in the present embodiment, the door roller blind plate 54d is provided on the door roller door roller 54.

The door roller blind plate 54d was arranged along the vertical direction at a distance from the wheel 54b and the inspection cover 23d between the wheel 54b and the inspection cover 23d (a member that overlaps with the door tail door roller 54 in the prospective direction). It is a flat plate-shaped steel material, and is fixed to the door roller holder 54c of the door tail door roller 54 with a fixing tool such as a screw. Specifically, as shown in FIGS. 13 and 14, the support plate 71 (more specifically, so as to substantially cover the entire upper surface of the door body 60) for supporting the opening stopper 70 described later for the door roller blind plate 54d (more specifically, By arranging the door body 60 at a position separated by a predetermined distance L6 from the front end portion of the plate-shaped member) provided (so as to protrude forward from the front end portion) toward the inside in the prospective direction (front-rear direction). When the door roller door roller 54 is melted and burned by the heat of the fire, and the flame of the fire blows out to the front side of the door roller blind plate 54d through the gap between the door roller blind plate 54d and the support plate 71. The blown-out flame is shielded by a portion of the support plate 71 that protrudes forward from the door roller blind plate 54d (that is, a portion corresponding to a predetermined distance L6), so that the flame burns downward. Can be suppressed. In this case, regarding the length of the predetermined distance L6, for example, when the flame of the fire blows out to the front side of the door roller blind plate 54d through the gap between the door roller blind plate 54d and the support plate 71, It is desirable to set the length longer than the length that can prevent the flame from burning downward. By installing the door roller blindfold plate 54d in this way, even if the door roller blindfold plate 54d is provided on the upper surface of the door body 60, the door roller blindfold plate 54d becomes the door tail door roller 54 and the upper frame when the door 50 is slid. 23, or in the space surrounded by the upper frame 23 and the door body 60, it is possible to prevent contact with various parts attached to the upper frame 23, and the door roller blindfold plate 54d hinders the sliding movement of the door 50. It is possible to prevent the door roller blindfold plate 54d from being damaged by contact with the door roller door roller 54 or the upper frame 23. Further, as compared with the case where the door roller blind plate 54d is arranged at a position on the front side of the support plate 71 (or at a position flush with the front end portion of the support plate 71), the door roller door roller 54 is melted and burned by the heat of the fire. In this case, when the flame of the fire blows out to the front side of the door roller blind plate 54d through the mutual space between the door roller blind plate 54d and the support plate 71, the blown out flame burns downward. Since it can be suppressed, it is also possible to suppress the blown out flame to the outside of the space surrounded by the upper frame 23 and the door body 60. In the embodiment, as shown in FIG. 14, the door roller blindfold plate 54d is installed with a gap from the support plate 71, but the present invention is not limited to this, and for example, a fire flame may blow out from this gap. To prevent this, the door roller blind plate 54d may be installed so that the lower end of the door roller blind plate 54d and the upper surface of the support plate 71 come into contact with each other.

Regarding the method of setting the size and installation position of the door roller blind plate 54d, in the present embodiment, when the door roller door roller 54 is burned by the heat of the fire, the flame generated by the combustion is on the front side of the sliding door 10. The door roller blind plate 54d covers at least the entire side surface of the door roller 54 in any one of the prospective directions (that is, the entire front surface of the door roller 54) and the area in the vicinity thereof in order to prevent the fire from burning. To decide. Here, the "neighboring region" means a region close to the door roller door 54, and in the present embodiment, when the door roller door 54 is melted and burned by the heat of the fire, it is generated by the melted combustion. The description will be made as an area where the flame can reach, but the present invention is not limited to this, and for example, the area may be wider than the area where the flame can reach. Further, the area covered by the door roller blindfold plate 54d is set as shown below. Specifically, as shown in FIGS. 5 and 8, the vertical region is upward from the lower end of the door roller receiver 54c so as to have substantially the same length as the vertical length of the door roller door 54. The area is set to reach a predetermined distance L3. The length of the predetermined distance L3 is not limited to substantially the same length as the length in the vertical direction of the door roller door wheel 54 described above, and is, for example, another component (not shown) located directly above the door roller blind plate 54d. When (for example, a known release for a fire door) does not exist, the upper end of the door roller blind plate 54d may be set to a length located in the vicinity of the upper frame upper piece 23b. Alternatively, when the above other parts are present, the length is longer (or shorter) than the vertical length of the door roller door roller 54, and the upper end portion of the door roller blind plate 54d is located in the vicinity of the upper frame upper piece 23b. May be set to a short length (specifically, the length at which the upper end portion of the door roller blindfold plate 54d is located near the lower end portion of other parts). Further, regarding the region in the left-right direction, as shown in FIGS. 5 and 8, even when a gap is formed due to the deformation of the inspection cover 23d, the melt-burned door-jiri door wheel 54 (particularly, the wheel 54b) And its neighboring area can be hidden, and the flame due to the above-mentioned melting combustion is caused by the airflow flowing in the space surrounded by the upper frame 23 and the door body 60 on the side of the door roller blind plate 54d on the finding direction side (that is, the door roller). By wrapping around the blind plate 54d (on the left side or the right side), the area is set so that the flame can be suppressed from burning to the front side of the sliding door 10. More specifically, the wheels are longer than the longer of the length in the finding direction (left-right direction) of the door roller door 54 and the length in the finding direction (left-right direction) of the door roller receiver 54c. It is set as a region including a region extending from the center of 54b to the left to a predetermined distance L4 and a region including a predetermined distance L5 from the center of the wheel 54b to the right. In this case, regarding the specific lengths of the predetermined distance L4 and the predetermined distance L5, in the present embodiment, from the viewpoint of manufacturability or versatility of the door roller blind plate 54d (for example, the sliding door which is different from the sliding door 10). Each of the predetermined distance L4 and the predetermined distance L5 is set to have substantially the same length, but the length is not limited to this, and for example, either the predetermined distance L4 or the predetermined distance L5 is set. One may be set to be longer than either the predetermined distance L4 or the predetermined distance L5. Further, regarding the length of the predetermined distance L5, in the present embodiment, the end portion of the door roller blind plate 54d on the door tail side is set to be flush with the end portion of the door body 60 on the door tail side. However, the length is not limited to this, and for example, the length at which the end of the door roller blind plate 54d on the door tail side projects toward the door tail side of the door pocket 34 from the end on the door tail side of the door body 60 (however, An elastic collision prevention member 58 provided at the end of the door body 60 on the door tail side (specifically, a collision prevention member 58 in a state of colliding with the end of the door pocket 34 on the door tail side and contracting). It may be set to a length that does not overhang toward the door end side of the door pocket 34). Alternatively, when the shielding performance of the door roller blind plate 54d is sufficiently obtained, the end of the door roller blind plate 54d on the door tail side is inside the door body 60 in the finding direction (left-right direction). It may be set to the length located in. With such a configuration, when a fire breaks out on the rear side of the sliding door 10 in the fully closed state, when the door roller door roller 54 melts and burns due to the heat of the fire, the door roller blind plate 54d causes the melt combustion. It is possible to shield the flame and the melted resin, and prevent the melted and burned door butt door wheel 54 from being exposed to the outside and falling. Therefore, it is possible to prevent the fire from spreading to the front side of the sliding door 10, so that the fire prevention performance of the sliding door 10 can be improved. As for the door-to-door door roller 53, the door-to-door blindfold plate 54d is not provided. The reason for this is that even if the front side mullion 25 is greatly deformed, the deformation of the door end side end of the inspection cover 23d is not so large, and the end portion of the inspection cover 23d on the door end side is the end portion. This is because it is possible to provide a structure for suppressing deformation. However, the door-to-door door roller 53 may also be provided with the door-to-door blind plate 54d. Further, one long door roller blindfold plate 54d that continuously extends from the door end door roller 53 to the door end door roller 54 may be attached.

Further, the door roller blind plate 54d can be manufactured of any material, but for example, it is nonflammable and can suppress the shape of the door roller blind plate 54d from being changed by the heat of the fire. It is preferable to manufacture it from a material such as steel, stainless steel, or a calcium silicate plate. As a result, the shielding performance of the door roller blindfold plate 54d can be maintained, and the fire prevention performance of the sliding door 10 can be further improved. Further, the door roller blindfold plate 54d can be manufactured by any method, but in the present embodiment, the door roller blindfold plate 54d is separate from the door roller receiver 54c so that the installation work of the door roller door roller 54 can be easily performed. By forming the door roller blind plate 54d, the door roller blindfold plate 54d can be manufactured.

(Fireproof structure-rail resin receiver)
Further, as shown in FIGS. 5 and 7, the upper frame 23 includes a rail resin receiver 23 g. The rail resin receiver 23g is a rack fall prevention for preventing the rack 23f from being exposed or falling to the outside of the sliding door 10 when the rack 23f made of resin is melted and burned. Specifically, the rail resin receiver 23g is a steel material having a substantially S-shaped vertical cross section, and is fixed below the rail 23e on the rear side surface of the upper frame base 23a of the upper frame 23. .. The position and length of the rail resin receiver 23g in the expected direction are a position and a length extending from the rear side surface of the upper frame base 23a to the vicinity of the center position in the front-rear direction of the rack 23f. Similarly, the position and length of the rail resin receiver 23g in the finding direction are the positions and lengths corresponding to the rack 23f so that the rack 23f that has been melted and burned can be received. Further, by providing lids (not shown) for closing the ends at both ends of the rail resin receiver 23 g in the finding direction (left-right direction), the melt-combusted resin can be found in the rail resin receiver 23 g. It is possible to suppress leakage from both ends (in the left-right direction).

(Fireproof structure-heated foam material)
Further, as shown in FIG. 5, the upper frame 23 includes a heat-heated foaming material 23h. The heat-heated foaming material 23h prevents the formation of a gap between the upper frame 23 and the door body 60 even when the upper frame 23 and the door body 60 are deformed by the heat of a fire. , It is a member for preventing the flame from coming out from this gap. The heat-heated foaming material 23h can be provided at any place where such a gap can be formed, but in the present embodiment, the door body 60 on the front side surface of the inspection cover 23d of the upper frame 23 They are provided at positions facing each other and at positions facing the door body 60 on the rear side surface of the upper frame base 23a of the upper frame 23. Then, when the heat-heated foaming material 23h is heated by the heat of the fire, the heat-heated foaming material 23h foams and expands, so that a gap is formed between the upper frame 23 and the door body 60. To prevent.

(Fireproof structure-opening stopper)
Further, as shown in FIGS. 3 and 5, an opening stopper 70 is provided at a position closer to the door end on the upper surface of the door body 60 (a position near the lower side of the door door wheel 53). The opening stopper 70 is a member for preventing a large gap from being formed between the upper frame 23 and the door body 60 even when the upper frame 23 and the door body 60 are deformed by the heat of a fire. Is. The opening stopper 70 is a member arranged at a position in the left-right direction corresponding to the inspection cover 23d, and is a member having an L-shaped vertical cross section downward, and is a support plate provided on the upper surface of the door body 60. When the inspection cover 23d is extended to the front position with respect to the lower end of the inspection cover 23d while being supported by the 71, and the upper frame 23 and the door body 60 are deformed and the inspection cover 23d is deformed to the front side, the inspection cover 23d By locking the door 23d to the door, the inspection cover 23d is prevented from being further deformed, and a large gap is prevented from being formed between the upper frame 23 and the door body 60. In the present embodiment, the opening stopper 70 is provided only at a position closer to the door tip on the upper surface of the door body 60 so that the door body 60 can be smoothly slid, but the present invention is not limited to this. For example, if the door body 60 can be smoothly slid and moved, the opening stopper 70 may be provided at a position near the door end on the upper surface of the door body 60. Alternatively, one long opening stopper 70 may be provided from the position near the door end to the position near the door end on the upper surface of the door body 60.

(Effect of embodiment)
As described above, according to the embodiment, since one end surface or the back surface of the front side decorative steel plate 67 and the rear side decorative steel plate 68 is joined to the other back surface or the fixing material by welding, the front side decorative steel plate 67 and the rear side are joined. It is not necessary to weld the surface of the decorative steel plate 68. Therefore, it is not necessary to scrape off the resin on the surfaces of the front decorative steel plate 67 and the rear decorative steel plate 68 before welding, and the door 50 is manufactured using the decorative steel plate as compared with the case where the resin on the surface needs to be scraped off. It becomes possible to reduce the cost. Further, since the door 50 using the decorative steel plate can be manufactured by welding, the fire prevention performance of the door 50 can be improved as compared with the door manufactured by adhesion. Further, by joining the front decorative steel plate 67 and the rear decorative steel plate 68 by welding, the strength of the door body 60 can be improved.

Further, at the end of the door 50 on the door end side, one end surface of the front side decorative steel plate 67 and the rear side decorative steel plate 68 is directly abutted against the back surface of either one by performing joining using a fixing material. Even when it is difficult to perform the bonding, the front decorative steel plate 67 and the rear decorative steel plate 68 can be joined by welding.

Further, since the door 50 can be joined at the end on the door end side without using a fixing material, it is possible to easily secure a space for attaching the lock to the end on the door end side. ..

[III] Modifications to Embodiments The embodiments of the present invention have been described above, but the specific configurations and means of the present invention are within the scope of the technical idea of each invention described in the claims. , Can be arbitrarily modified and improved. Hereinafter, such a modification will be described.

(About the problem to be solved and the effect of the invention)
First, the problem to be solved by the invention and the effect of the invention are not limited to the above-mentioned contents, and the present invention solves a problem not described above or an effect not described above. It can also be played, and it may solve only some of the tasks described or play only some of the effects described. For example, even if the manufacturing cost of the door 50 is the same as that of the conventional one, the problem of the present application is solved when the manufacturing cost of the door 50 is the same as that of the conventional one due to a structure different from the conventional one.

(About the door)
In the problem to be solved by the above invention, as an example, the problem when it is necessary to match the design of the heavy door with the design of the lightweight door has been described, but when it is not necessary to match the design of the heavy door with the design of the lightweight door. Further, even in the case of manufacturing an arbitrary door other than the heavy door, the present invention is useful in all cases where the door is manufactured by using the front side surface material and the rear side surface material which are decorative steel plates.

(About joining decorative steel sheets)
In the above embodiment, the joint structure of the front decorative steel plate 67 and the rear decorative steel plate 68 on the door end side of the door body 60 shown in FIG. 10 and the front decorative steel plate 68 on the door tail side of the door body 60 shown in FIG. Although the joint structure of the steel plate 67 and the rear decorative steel plate 68 has been described as different structures, they may have the same structure (for example, the joint structure on the door end side may be the door end side and the door tail side. It may be applied to both, or the joint structure on the door tail side may be applied to both the door end side and the door tail side), or both may be interchanged. Further, the joining structure of the front decorative steel plate 67 and the rear decorative steel plate 68 on the door end side of the door body 60 and the joining structure of the front decorative steel plate 67 and the rear decorative steel plate 68 on the door end side of the door body 60 are provided. The structure may be symmetrical with respect to the center line passing through the substantially central position in the prospective direction of the door 50 (for example, as described above, the back surface of the front decorative steel plate 67 and the end faces of the rear decorative steel plate 68. Instead of the structure in which the front side decorative steel plate 67 is joined by welding, the structure in which the end face of the front side decorative steel plate 67 and the back surface of the rear side decorative steel plate 68 are joined by welding is adopted. However, since the lock is attached to the door end side of the door body 60, the joint structure shown in FIG. 10 is adopted on the door end side rather than the joint structure shown in FIG. 11 from the viewpoint of securing this attachment space. It is preferable to do so.

Further, the structure is such that the end face or the back surface of one of the front side decorative steel plate 67 and the rear side decorative steel sheet 68 is abutted against the back surface of the other, and the end face and the back surface are joined to each other by welding. In some cases, other structures may be adopted. FIG. 15 is a diagram relating to a modified example, and is a diagram of a portion corresponding to FIG. As shown in FIG. 15, the decorative door tail piece 67d of the front decorative steel plate 67 has a first end portion 67 g bent about 90 degrees toward the door end side along the left-right direction as a rear end portion thereof. It is provided with a second end portion 67h that is bent by about 180 degrees from the first end portion 67g to the door tail side in the left-right direction. By forming the first end portion 67g and the second end portion 67h in this way, the back surface of the decorative door tail piece 67d of the front decorative steel plate 67 (more specifically, the back surface of the second end portion 67h) is on the rear side. It is supposed to be exposed. Then, the end faces of the decorative door tail pieces 68e of the rear decorative steel plate 68 are butted against the back surface of the decorative door tail piece 67d of the front decorative steel plate 67 so as to be substantially orthogonal to the back surface of the decorative door tail piece 68e in the vertical direction. Are in contact with. The back surface of the decorative door tail piece 67d of the front decorative steel plate 67 and the end surface of the decorative door tail piece 68e of the rear decorative steel plate 68 arranged in this way are a joint region between them (door tail side joint region S2). In, they are fixed to each other by welding over a substantially entire length by known YAG welding. Even in such a joint structure, the back surface of the decorative door tail piece 67d of the front decorative steel plate 67 and the end surface of the decorative door tail piece 68e of the rear decorative steel plate 68 are not surface-treated with resin. Since it is not necessary to scrape off the resin in advance for welding by YAG welding, the manufacturing cost of the door 50 using the front side decorative steel plate 67 and the rear side decorative steel plate 68 is higher than the case where the resin needs to be scraped off. Can be reduced. Further, since the door 50 using the front decorative steel plate 67 and the rear decorative steel plate 68 can be manufactured by welding, the strength of the door body 60 can be improved. The structure shown in FIG. 15 may be applied to the door end side, or the joint structure of the front side decorative steel plate 67 and the rear side decorative steel plate 68 on the door tail side of the door body 60 may be applied to the door 50. The structure may be symmetrical with respect to the center line passing through the substantially central position in the prospective direction. However, if there is no manufacturing facility that forms the first end portion 67g and the second end portion 67h as shown in FIG. 15, or if it is desired to avoid the labor required for this formation, the structure shown in FIG. 11 is adopted. Is more preferable.

Alternatively, the end surface or the back surface of either one of the front side decorative steel plate 67 and the rear side decorative steel plate 68 and the fixing material fixed to the back surface or the back surface of the other side do not abut each other. It may be joined by welding. FIG. 16 is a diagram relating to another modification, and is a diagram of a portion corresponding to FIG. As shown in FIG. 16, with respect to the rear decorative steel plate 68, the decorative door tail piece 68e shown in FIG. 11 is omitted, and the back surface of the end portion of the decorative main piece 68a on the door tail side is the door tail vertical. It is in contact with the rear surface of the rear side piece 64b of the frame 64 substantially in parallel. The left-right length of the decorative main piece 68a is slightly shorter than the left-right length of the decorative main piece 67a of the front decorative steel plate 67, and the left-right length of the decorative main piece 68a is the same as in FIG. A door tail second distance L2, which is the difference between the length of the main piece 67a and the length of the main piece 67a in the left-right direction, is provided. By providing the door tail second distance L2 in this way, the position of the end surface of the decorative main piece 68a of the rear decorative steel plate 68 on the door tail side is larger than the position of the end surface of the door body 60 on the door tail side. The position is slightly closer to the door. Then, the back surface of the end portion of the decorative main piece 68a of the rear decorative steel plate 68 on the door tail side and the rear surface of the rear side piece 64b of the door tail vertical frame 64 are the door tails between them. In the side joint region S2, they are fixed to each other by welding over a substantially entire length by known YAG welding. Even in such a welded structure, the back surface of the end of the decorative main piece 68a of the rear decorative steel plate 68 on the door tail side and the rear surface of the rear side piece 64b of the door tail vertical frame 64 are made of resin. Since it is not necessary to scrape off the resin in advance in order to perform welding by YAG welding because the surface treatment is not performed, the front side decorative steel plate 67 and the rear side are compared with the case where the resin needs to be scraped off. It is possible to reduce the manufacturing cost of the door 50 using the decorative steel plate 68. Further, since the door 50 using the front decorative steel plate 67 and the rear decorative steel plate 68 can be manufactured by welding, the strength of the door body 60 can be improved. The structure shown in FIG. 16 may be applied to the door end side, or the joint structure of the front side decorative steel plate 67 and the rear side decorative steel plate 68 on the door tail side of the door body 60 may be applied to the door 50. The structure may be symmetrical with respect to the center line passing through the substantially central position in the prospective direction.

Further, the joint structure of the front decorative steel plate 67 and the rear decorative steel plate 68 on the door end side of the door body 60 and the front decorative steel plate 67 and the rear decorative steel plate 68 on the door tail side of the door body 60 described in the above embodiment are also provided. The joining structure with the steel plate 68 may be adopted as the joining structure between the front decorative steel plate 67 and the rear decorative steel plate 68 on the upper side of the door body 60. Further, when it is necessary to join the front decorative steel plate 67 and the rear decorative steel plate 68 also on the lower side of the door body 60, the joining structure described in the above embodiment may be adopted for this joining. ..

On the contrary, the joint structure between the front decorative steel plate 67 and the rear decorative steel plate 68 on the door end side of the door body 60 and the front decorative steel plate 67 and the rear side on the door tail side of the door body 60 described in the above embodiment. One of the joint structures with the decorative steel plate 68 may be performed by fillet welding or the like. However, in fillet welding, etc., finishing after welding (cutting of welding marks with a sander, etc.) is required, and welding over the entire length of the member becomes difficult, so YAG does not have such a problem. It is more preferable to perform welding.

(About welding)
In the above embodiment, it has been described that the front decorative steel plate 67 and the rear decorative steel plate 68 are joined and the rear decorative steel plate 68 and the door tail vertical frame 64 are joined by YAG welding. Any welding other than YAG welding can be applied as long as it matches, for example, laser welding other than YAG welding (carbon dioxide laser welding, semiconductor laser welding, etc.), electron beam welding, resistance welding, argon welding, etc. Ultrasonic welding or the like may be applied.

(How to install the door pocket board)
In the above embodiment, only for the attachment of the front upper door pocket board 29, the upper end of the front upper door pocket board 29 is locked to the upper frame locking piece 23i of the upper frame 23, and then the front upper door pocket board 29 is mounted on the front side. It has been explained that it is attached by placing it on the crosspiece 27, but the present invention is not limited to this. For example, the door pocket boards other than the front upper door pocket board 29 (that is, the front lower door pocket board 30, the rear upper door pocket board 31, or the rear lower door pocket board 32) are also the same as the mounting method of the front upper door pocket board 29 described above. It may be attached by the method of. Further, in the above embodiment, it has been explained that the method of attaching the front upper door pocket board 29 is applied when one of the side portions of the door pocket 34 in the prospective direction is provided with a plurality of door pocket boards. However, the present invention is not limited to this, and may be applied to, for example, a case where only one door pocket board is provided.

(About hooking means)
In the above embodiment, it has been described that the hooking means is provided at the upper end of the front upper door pocket board 29, but the present invention is not limited to this. For example, when the installation position of the hooking means is restricted due to the manufacturing convenience of the upper frame 23 or the front upper door pocket board 29, the hooking means may be provided near the upper end of the front upper door pocket board 29.

(About combustible materials)
In the above embodiment, the combustible member has been described as the door-to-door door roller 53 and the door-end door roller 54, but the present invention is not limited to this. For example, any flammable member provided in the space surrounded by the upper frame 23 and the door body 60 may be used. As an example, a braking device 55 attached to the door body 60 (specifically, braking including a resin member). The device 55), the rack 23f attached to the upper frame 23, or the like may be used.

(About the door car blindfold)
In the above embodiment, it has been described that the door roller blindfold plate 54d is attached to the door 50 (specifically, the door roller receiver 54c of the door tail door roller 54), but the present invention is not limited to this. For example, if it is difficult to attach the door roller blindfold plate 54d to the door 50 due to the configuration and shape of the door 50, the door wheel blind plate 54d may be attached to the upper frame 23.

Further, in the above embodiment, it has been described that the door roller blindfold plate 54d is provided on the front side of the door roller door roller 54, but the present invention is not limited to this. For example, in addition to this, on the rear side of the doorway door 54 so as to cover the entire side surface of the doorway door 54 on any other side in the prospective direction (that is, the entire rear surface of the doorway door 54) and its vicinity. Further may be provided. As a result, when the door butt door wheel 54 is burned by the heat of the fire, it is possible to prevent the flame generated by the combustion from burning to the rear side of the sliding door 10.

(1st note)
The door of the first appendix 1 is a door for opening and closing an opening of a building, and includes an inner member arranged inside the door, a front decorative steel plate that covers the inner member from the front side, and the inner member. With a rear decorative steel plate that covers from the rear side, an end face or back surface of either one of the front decorative steel plate and the rear decorative steel plate, and a fixing material fixed to the back surface or the back surface of either one. Are joined to each other by welding.

The door of the first appendix 2 is the door according to the first appendix 1, at the end of the door on the door tail side, one of the front side decorative steel plate and the rear side decorative steel plate is used. , These end faces and the fixing material are joined to each other by welding in a state of being abutted against the fixing material fixed to the back surface of either one.

The door of the first appendix 3 is the door according to the first appendix 1 or 2, and at the end of the door on the door end side, one of the front decorative steel plate and the rear decorative steel plate. These end faces and back surfaces are joined to each other by welding with the end faces abutting against the back surface of either one.

(Effect of the first appendix)
According to the door described in the first appendix 1, one end face or back surface of the front side decorative steel sheet and the rear side decorative steel sheet is joined to the other back surface or fixing material by welding, so that the front side decorative steel sheet and the rear side are joined. There is no need to weld to the surface of the decorative steel sheet. For this reason, it is not necessary to scrape off the resin on the surfaces of the front decorative steel plate and the rear decorative steel sheet before welding, and the manufacturing cost of the door using the decorative steel plate is reduced as compared with the case where the resin on the surface needs to be scraped off. It becomes possible to do. Further, since the door using the decorative steel plate can be manufactured by welding, the fireproof performance of the door can be improved as compared with the door manufactured by adhesion. Further, by joining the front decorative steel plate and the rear decorative steel plate by welding, it is possible to improve the strength of the door body.

According to the door described in the first appendix 2, at the end of the door on the door end side, one end surface of the front side decorative steel plate and the rear side decorative steel plate is formed by joining with a fixing material. Even when it is difficult to directly abut the other back surface, the front decorative steel sheet and the rear decorative steel sheet can be joined by welding.

According to the door described in the first appendix 3, the end of the door on the door end side can be joined without using a fixing material, so that there is a space for attaching the lock to the end end on the door end side. Can be easily secured.

(Second appendix)
The door of the second appendix 1 is a frame body provided on the peripheral edge of the opening of the building, a door body that opens and closes the opening by sliding, and a fully opened door that is fully opened by the door body. A door provided with a door pocket for accommodating the door body in a state, and when a fire occurs in a fully closed state in which the opening is fully closed by the door body, a frame material constituting the frame body. When a combustible member provided in the space surrounded by the frame material located on the upper side and the door body main body of the door body is burned by the heat of the fire, the fire spreads through the combustible member. A fire spread suppressing means for suppressing this is provided, which covers the entire side surface of at least one side of the combustible member in the prospective direction and a region in the vicinity thereof in the fully closed state.

When a plurality of the combustible members are arranged side by side along the finding direction in the door according to the second appendix 1, the door of the second appendix 2 is the door in the fully closed state by the fire spread suppressing means. Of the plurality of combustible members, at least the combustible member located on the door tail side of the door body covers the entire side surface on any one side in the prospective direction and a region in the vicinity thereof.

The door of the second appendix 3 is the door according to the second appendix 1 or 2, and the combustible member is a door roller provided on the upper surface of the door body body, and the door body can be slidable. The fire spread suppressing means is provided between the members that polymerize with the door roller in the prospective direction and the door roller among the members constituting the frame material, and the distance between each of the overlapping member and the door roller. Were arranged apart from each other and fixed to the door body body.

The door of the second appendix 4 is the door according to any one of the second appendices 1 to 3, and the fire spread suppressing means is nonflammable and is caused by the heat of the fire. It was made of a material that can prevent the shape of the door from changing.

(Effect of the second appendix)
According to the door described in the second appendix 1, when a fire breaks out in the fully closed state, the space surrounded by the frame material located on the upper side and the door body body among the frame materials constituting the frame body. When the combustible member provided inside is burned by the heat of a fire, it is provided with a fire spread suppressing means that covers at least one side surface of the combustible member in the prospective direction and a region in the vicinity thereof in the fully closed state. When a fire breaks out on either side of the door body in the fully closed state and the combustible member burns with the heat of the fire, the flame generated by the combustion can be shielded by the fire spread suppressing means. it can. Therefore, it is possible to prevent the fire from spreading to any other side of the door body in the prospective direction, so that the fire prevention performance of the door can be improved.

According to the door described in the second appendix 2, when a plurality of combustible members are arranged side by side along the finding direction, at least the door of the door body among the plurality of combustible members in the fully closed state by the fire spread suppressing means. Since it covers the entire side surface of the combustible member located on the tail side in any one side in the prospective direction and the region in the vicinity thereof, it is located on the door tail side of the door where a gap between the door body and the frame material is likely to be formed in the fully closed state. When the combustible member burns with the heat of the fire, the flame generated by the combustion can be shielded by the fire spread suppressing means, and the spread of the fire can be further suppressed.

According to the door described in the second appendix 3, the fire spread suppressing means is used between the members that overlap with the door roller in the prospective direction and the door roller among the members constituting the frame material, and each of the overlapping member and the door roller. Since it is arranged at a distance from the door body and fixed to the door body body, even if the fire spread suppressing means is provided on the upper surface of the door body body, the fire spread suppressing means is a door roller or when the door body is slid. It is possible to prevent the door from coming into contact with the frame material, prevent the door body from being hindered by the fire spread suppressing means, and prevent the fire spread suppressing means from being damaged.

According to the door described in the second appendix 4, the fire spread suppressing means is formed of a material that is nonflammable and can suppress the shape of the fire spread suppressing means from being changed by the heat of the fire. Therefore, the shielding performance of the fire spread suppressing means can be maintained, and the fire prevention performance of the door can be further improved.

(Third note)
The door of the third appendix 1 includes a door body that slides to open and close the opening of the building, and a door pocket that stores the door body in a fully opened state in which the opening is fully opened by the door body. The door is a long door, and the side portion of the door pocket in the prospective direction is a long frame member arranged along the finding direction, and a pair of frame members arranged side by side in the vertical direction and the above. A substantially plate-shaped door pocket board provided between the pair of frame materials is provided, and the first frame material, which is a frame material located on the upper side of the door pocket board, is hooked on the pair of frame materials. A means is provided, a hooking means for hooking on the hooked means is provided on the upper side of the door pocket board, and after hooking the hooking means on the hooked means, the door pocket board of the pair of frame materials is provided. By placing the lower portion of the door pocket board on the upper portion of the second frame material, which is the frame material located on the lower side of the door pocket board, the door pocket board is placed on the first frame material and the second frame material. Can be attached to.

(Effect of the third appendix)
According to the door described in the third appendix 1, the hooking means is provided on the first frame material, the hooking means for hooking on the hooking means is provided on the upper side of the door pocket board, and the hooking means is hooked on the hooking means. After hooking the means, the door pocket board can be attached to the first frame material and the second frame material by placing the lower part of the door pocket board on the upper part of the second frame material. Therefore, compared to a door that requires the step of fixing the upper end of the door pocket board to the first frame material and the step of fixing the lower end of the door pocket board to the second frame material at the same time, the door pocket board It is possible to easily and safely perform the installation work of the door. Further, when the side portion of the door pocket in the prospective direction includes a plurality of pairs of frame materials and a plurality of door pocket boards, each door pocket board can be mounted without worrying about the mounting order of the door pocket boards. .. From the above, it is possible to improve the installability of the door.

1 Frame 2 Opening 10 Sliding door 20 Frame body 21 Door tip vertical frame 22 Door tail vertical frame 23 Upper frame 23a Upper frame base 23b Upper frame upper piece 23c Upper frame front side piece 23d Inspection cover 23e Rail 23f Rack 23g Rail resin receiver 23h Heat Heated foam material 23i Upper frame locking piece 24 Width wood 25 Front side mullion 26 Rear side mullion 27 Front side middle rail 28 Rear side middle rail 29 Front upper door pocket board 30 Front lower side door pocket board 31 Rear upper door pocket board 32 Rear lower side Door bag board 33 Guide roller 33a Prop 33b Roller 34 Door bag 50 Door 51 Door tip cover 51a Spacer 52 Door tail cover 53 Door front door car 53a Base piece 53b Wheel 53c Door car receiver 54 Door tail door car 54a Base piece 54b Wheel 54c Door car holder 54d Plate 55 Braking device 56 Opening prevention material 57 Guide rail 58 Collision prevention member 60 Door body 61 Upper frame 62 Lower frame 63 Vertical frame (door tip vertical frame)
64 Vertical frame (Tojiri vertical frame)
64a, 64b Side pieces 65, 66 Vertical frame (intermediate vertical frame)
67 Front decorative steel plate 67a Cosmetic main piece 67b Cosmetic upper piece 67c Cosmetic lower piece 67d Cosmetic door tail piece 67e Cosmetic main piece protruding part 67f Notch 67g First end 67h Second end 68 Rear decorative steel plate 68a Cosmetic main piece 68b Cosmetic upper piece 68c Cosmetic lower piece 68d Cosmetic door tip piece 68e Cosmetic door tail piece 68f Notch 69 Handle 70 Open stopper 71 Support plate S1 Door tip side joint area S2 Door tail side joint area S3 Upper joint area

Claims (4)

A door for opening and closing the opening of a building
An inner member arranged inside the door and
A front decorative steel plate that covers the inner member from the front,
A rear decorative steel plate that covers the inner member from the rear side is provided.
The end face of one of the front decorative steel plate and the rear decorative steel plate was abutted against a fixing material fixed to the back surface of the other, and these end faces and the fixing material were joined to each other by welding. ,
door. At the end of the door on the door tail side, one of the front side decorative steel plate and the rear side decorative steel plate is abutted against the fixing material fixed to the back surface of the other side. The end face and the fixing material were joined to each other by welding,
The door according to claim 1. At the end of the door on the door end side, one of the front decorative steel plate and the rear decorative steel plate is abutted against the back surface of the other, and the end faces and the back surface of the door face each other. Joined by welding,
The door according to claim 1 or 2. A door for opening and closing the opening of a building
An inner member arranged inside the door and
A front decorative steel plate that covers the inner member from the front,
A rear decorative steel plate that covers the inner member from the rear side is provided.
The end face of either one of the front decorative steel plate and the rear decorative steel plate is abutted against the back surface of the other, and the end face of the other is in the finding direction from the end face of the one. The end face of one of the above and the back surface of the other of the above were joined to each other by welding while protruding outward.
door.

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