JP2016145513A - door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door capable of reducing the manufacturing cost of the door while improving fireproof performance of the door by arranging to join the front side surface material and the rear side surface material as decorative steel plates to each other by means of welding.SOLUTION: A door 50 is a door for opening and closing an opening 2 of a building. The door 50 includes: an inner member which is disposed inside; a front side decorative steel plate which covers the inner member; and a rear side decorative steel plate which covers the inner member at the rear side. In the front side decorative steel plate and the rear side decorative steel plate, an edge face or rear face thereof is joined to a fixed member, which is fixed to the rear face thereof or the rear face of the other one, are joined alternately by means of welding.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a door.

  Conventionally, heavy doors and lightweight doors have been widely used as doors for opening and closing an opening of a building. These heavy doors and lightweight doors are generally configured by covering a frame material with a surface material. As this surface material, there are 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, and in the case of a fireproof heavy door or lightweight door, these front surface material and rear surface material Are connected to each other at the end of the door on the door end side, the end of the door butt side, or the like, thereby improving the fire prevention performance.

  Here, when it is not necessary to match the design of the heavy door to the design of the lightweight door as in the case where only the heavy door is installed in the building, the manufacture of the heavy door is relatively easy. That is, when it is not necessary to match the design in this way, the design of the heavy door can be determined separately from the design of the lightweight door, so the surface of the front surface material and the rear surface material of the heavy door is painted. Can be carried out in the factory. In this case, the hot dip galvanized steel sheet not subjected to the surface treatment with the 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 which are these hot dip galvanized steel sheets Can be applied to the surfaces of the front surface material and the rear surface material (see, for example, Patent Document 1).

JP 2003-1456 A

  On the other hand, when it is necessary to match the design of the heavy door to the design of the lightweight door, as in the case where both the heavy door and the lightweight door are installed close to the building, it is relatively difficult to manufacture the heavy door. there were. That is, when it is necessary to match the design 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 subjected to a surface treatment with a resin for decoration or the like, and when welding is performed on this surface, the resin is not preferable because it melts. For this reason, it is conceivable to perform the work of scraping off the resin on the surface of the front surface material and the rear surface material, which is a decorative steel plate, before performing welding. This is not preferable because it contributes to an increase.

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

  In order to solve the above-described problems and achieve the object, the door according to claim 1 is a door for opening and closing an opening of a building, and an inner member disposed inside the door; A front decorative steel sheet that covers the inner member from the front side, and a rear decorative steel sheet that covers the inner member from the rear side, and either the end face or the back surface of the front decorative steel sheet or the rear decorative steel sheet, The other back surface or a fixing material fixed to the back surface is joined to each other by welding.

  The door according to claim 2 is the door according to claim 1, wherein one end face of the front decorative steel sheet and the front decorative steel sheet is selected at an end portion on the door bottom side of the door. These end surfaces 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, wherein one end face of the front decorative steel sheet and the rear decorative steel sheet is provided at an end of the door on the door end side. These end surfaces and the back surface are joined to each other by welding in a state of abutting against the other back surface.

  According to the door of claim 1, since one end surface or the back surface of the front decorative steel plate and the rear decorative steel plate is joined to either the other back surface or the fixing material by welding, the front decorative steel plate and the rear decorative steel plate There is no need to perform welding on the surface. For this reason, it is no longer necessary to scrape off the resin on the front and rear decorative steel sheets before welding, reducing the manufacturing cost of doors using decorative steel sheets compared to the need to scrape off the resin on the surface. It becomes possible to do. Moreover, since it becomes possible to manufacture the door using a decorative steel plate by welding, it becomes possible to improve the fireproof performance of a door compared with the door manufactured by adhesion | attachment. Moreover, it becomes possible to improve the intensity | strength of a door main body by joining a front side decorative steel plate and a rear decorative steel plate by welding.

  According to the door according to claim 2, one end face of the front decorative steel sheet and the rear decorative steel sheet is connected to either one of the other by performing bonding using a fixing material at an end of the door on the door bottom side. Even when it is difficult to directly match the back surface, the front decorative steel sheet and the rear decorative steel sheet can be joined by welding.

  According to the door of Claim 3, since it can join without using a fixing material in the edge part of the door-end side of a door, the space for attaching a lock to the edge part of the door-end side is easy. Can be secured.

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 a disassembled perspective view of the sliding door of FIG. It is a figure which shows an upper frame, (a) is a front view, (b) is a top view, (c) is a side view from the door-end side. It is AA arrow sectional drawing of FIG. It is BB arrow sectional drawing of FIG. It is a partial front view of a sliding door. It is a figure which shows a door, (a) is a front view, (b) is a top view, (c) is a bottom view, (d) is a side view from the door bottom side. It is a figure which shows a door main body, (a) is a front view, (b) is a top view, (c) is a bottom view, (d) is a side view from the door tip side, (e) is from the door bottom side. A side view and (f) are DD arrow sectional views of (a). FIG. 10 is an enlarged view of a region X in FIG. FIG. 10 is an enlarged view of a region Y in FIG. It is CC sectional view taken on the line of FIG. It is an enlarged view of area | region Z1 of FIG.8 (b). It is an enlarged view of area | region Z2 of FIG.8 (d). It is a figure which concerns on a modification, and is a figure of the location corresponding to FIG. It is a figure which concerns on another modification, and is a figure of the location corresponding to FIG.

  Embodiments of a door according to the present invention will be described below 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 modification to the embodiment will be described. However, the present invention is not limited to the embodiments.

[I] Basic Concept of Embodiment First, the basic concept of the embodiment will be described. Embodiments generally relate to a door for opening and closing an opening of a building.

  Here, the “building” may have any specific structure and type, but includes a concept including a detached house, an apartment house such as an apartment or an apartment, an office building, a commercial facility, and a public facility, for example. . Further, the “building opening” is an opening formed to install a window or an entrance / exit 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 restricting entrance / exit of a building or visibility, and is a concept including so-called “door” and “door”. The installation position and use of this door are arbitrary, but for example, “door door” installed at the entrance, “selfish door” installed at the entrance and entrance, or “indoor” for installation inside the building Door "as well as the heavy doors and lightweight doors described above. The door opening / closing structure is arbitrary, and for example, it can be configured as a “folding door” or “sliding door” such as a single-opening hinged door or a double-opening 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 Embodiment Next, specific contents of the embodiment will be described.

(Constitution)
Initially, the structure of the sliding door which concerns on embodiment is demonstrated. 1 is a front view of a sliding door according to an 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. (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 in FIG. 1, and FIG. FIG. 3 is a cross-sectional view taken along the line B-B in FIG. 1. In FIG. 1 and FIG. 2, wall finishing materials for the front and rear surfaces of the door pocket 34 described later are omitted. In the following description, among the XYZ directions shown in FIGS. 1, 2, 5, and 6, the X direction is the left-right direction, the finding direction, or the width direction (the −X direction is the left direction or Door tip direction, + X direction is right direction or door butt direction), Y direction is inside / outside direction, front / rear direction, expectation direction, or thickness direction (+ Y direction is rear direction, outside direction, non-inspection side, -Y direction is The front direction, the inner direction, or the inspection side), the Z direction is referred to as the vertical direction or the height direction (the + Z direction is the upward direction, and the -Z direction is the downward direction).

  As shown in FIG. 1, the sliding door 10 is arrange | positioned in the opening part 2 formed in the housing 1 of a building. This sliding door 10 is generally 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 suspended manner inside the frame body 20. By opening (sliding), the opening 2 can be opened and closed by the door 50. However, about the structure which does not mention especially regarding the sliding door 10, it abbreviate | omits description as what is the same as the past.

(Configuration-frame)
First, the configuration of the frame 20 will be described. The frame 20 is installed at the periphery of the opening 2 and, as shown in FIGS. 1 to 5, a door-end vertical frame 21, door-door vertical frame 22, upper frame 23, baseboard 24, front side Stand 25, rear side stand 26, front side crosspiece 27, rear side crosspiece 28, front upper side doorboard board 29, front lower side doorbag board 30, rear upper side doorbag board 31, rear lower side doorbag board 32, and guide roller 33.

(Configuration-frame-vertical frame of the door)
The door-end vertical frame 21 is a long frame member that is fixed to the periphery of the opening 2 on the door-end side by a known method, and is attached along the vertical direction. The door end vertical frame 21 is provided with a receiving bracket (not shown). In this state that the door 50 is positioned at the fully closed position (the position shown in FIG. 1 in the embodiment) (that is, the fully closed state), a lock dead bolt (described later) provided on the door 50 is provided. It is a dead bolt receiving means for receiving, and is disposed at a position corresponding to this dead bolt.

(Configuration-frame-Tojiri vertical frame)
The door bottom vertical frame 22 is a long frame member fixed by a known method to the peripheral edge of the opening 2 on the door bottom side, and is attached along the vertical direction.

(Configuration-frame-upper frame)
The upper frame 23 is a frame member that is fixed to the upper periphery of the opening 2 by a known method, and is a long frame member that extends from the door-end vertical frame 21 to the door-end vertical frame 22. These door-end vertical frames 21 and door-end 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 piece 23c, and an inspection cover 23d. In FIG. 4, the inspection cover 23d is omitted.

  The upper frame base 23a is a member that constitutes the rear portion of the upper frame 23, is a member having a length corresponding to substantially the entire length in the left-right direction of the upper frame 23, and is a height corresponding to substantially the entire height of the upper frame 23 in the vertical direction. The vertical cross-sectional shape is a vertically long hollow rectangular member. A rail 23e is fixed to the front side surface of the upper frame base 23a. The rail 23e is a guide path for allowing a door-end door 53 and a door-end door 54, which will be described later, attached to the upper surface of the door 50 to travel along the left-right direction. This rail 23e is an elongate frame member formed with a width corresponding to the travel range of the door-end door 53 and the door-end door 54, and extends downward from the door-end side to the door-end side. It is attached to the slope. The door 50 is supported in a suspended manner via the door-end door 53 and the door-end door 54 with respect to such an inclined rail 23e, so that the door 50 is constantly biased toward the door-end by its own weight. Thus, in a state in which the user is not waving to the door 50, the door 50 naturally moves to the door end side, and the opening 2 is fully closed. A rack (rack gear) 23f is provided on the front side surface of the upper frame base 23a. The rack 23f is formed by cutting teeth on the upper surface of the rod-like body, and a gear of a braking device 55, which will be described later, attached to the door-end door 53 is engaged with the teeth, thereby braking the door 50. Is done. The rack 23f is provided in a range corresponding to the movement range of the braking device 55 (see FIG. 7 described later).

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

  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 has a height that is shorter than substantially the total height of the upper frame 23 in the vertical direction. And it arrange | positions so that it may reach in a downward direction from the front end of the upper-frame upper piece 23b.

  The inspection cover 23d is a member that constitutes the front portion of the upper frame 23 together with the upper frame front side piece 23c, and has a height excluding the height of the upper frame front side piece 23c out of the substantially total height in the vertical direction of the upper frame 23. 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 so as to hang down with a known structure with respect to the upper frame front piece 23c. When the inspection cover 23d is attached to the upper frame front 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 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 it is possible to inspect each part arranged inside the upper frame 23.

(Configuration-frame-baseboard)
In FIG. 1 to FIG. 3, a baseboard 24 is a frame member that is fixed to a peripheral edge below the opening 2 (specifically, a floor surface that is a part of the building frame 1) by a known method. , A long frame material extending from the front side stand 25 and the rear side stand 26 to the door bottom vertical frame 22. The front side stand 25 and the rear side stand 26 and the door bottom vertical frame 22 are mutually connected. It is attached along the horizontal direction (finding direction).

(Configuration-Frame-Front side stand)
The front side stand 25 is a frame member disposed in front of the end of the door butt side of the door 50 positioned at the fully closed position, and is a long frame extending from the upper frame 23 to the baseboard 24. It is a frame material that is disposed along the vertical direction between the upper frame 23 and the baseboard 24. The front side stand 25 is fixed to the upper frame 23 via a fixing tool such as a screw at the upper end thereof, and the fixing tool such as a screw to the baseboard 24 at the lower end thereof. It is fixed through.

(Configuration-Frame-Rear side stand)
The rear side stand 26 is a frame member that is arranged behind the door-end side end portion of the door 50 that is positioned at the fully closed position, and has a long shape extending from the upper frame 23 to the baseboard 24. It is a frame member, and is a frame member arranged along the vertical direction between the upper frame 23 and the baseboard 24. The rear side stand 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 baseboard 24 at the lower end thereof. It is fixed through tools.

(Configuration-Frame-Front side crosspiece)
The front middle rail 27 is a frame member arranged along the horizontal direction (finding direction) between the front side stand 25 and the door bottom vertical frame 22, and extends from the front side stand 25 to the door bottom vertical frame 22. It is a long frame material of length. The front middle rail 27 is fixed to the front side stand 25 via a fixing tool such as a screw at the end on the door tip side, and to the door bottom vertical frame 22 at the end on the door bottom side. It is fixed via a fixing tool such as a screw.

(Configuration-Frame-Rear middle crosspiece)
The rear middle rail 28 is a frame member disposed along the horizontal direction (finding direction) between the rear side stand 26 and the door sill vertical frame 22, and from the rear side stand 26 to the door sill vertical frame. This is a long frame material having a length up to 22. The rear middle rail 28 is fixed to the rear side stand 26 via a fixing tool such as a screw at the end on the door tip side, and the door bottom vertical frame 22 at the end on the door bottom side. It is being fixed with respect to the fixing tool, such as a screw.

(Configuration-Frame-Front upper doorboard board)
The front upper door bag board 29 is a plate-like body arranged in a space surrounded by the door bottom vertical frame 22, the upper frame 23, the front side stand 25, and the front middle rail 27. The front upper door bag board 29 is fixed to the door bottom vertical frame 22, the upper frame 23, the front side stand 25, and the front side middle rail 27 via a fixing tool such as a screw at the peripheral edge thereof.

(Configuration-frame-front lower side doorboard board)
The front lower side door bag board 30 is a plate-like body arranged in a space surrounded by the door bottom vertical frame 22, the front side crosspiece 27, the front side stand 25, and the baseboard 24. The front lower side door bag board 30 is fixed to the door bottom vertical frame 22, the front side crosspiece 27, the front side stand 25, and the baseboard 24 through a fixing tool such as a screw at the periphery. .

(Configuration-Frame-Rear upper doorboard board)
The rear upper door bag board 31 is a plate-like body arranged in a space surrounded by the door bottom vertical frame 22, the upper frame 23, the rear side stand 26, and the rear side crosspiece 28. The rear upper door bag board 31 is fixed to the door bottom vertical frame 22, the upper frame 23, the rear side stand 26, and the rear side crosspiece 28 via fasteners such as screws at the peripheral edge thereof. Yes.

(Configuration-Frame-Rear lower side doorboard board)
The rear lower side door bag board 32 is a plate-like body arranged in a space surrounded by the door bottom vertical frame 22, the rear side crosspiece 28, the rear side stand 26, and the baseboard 24. The rear lower door bag board 32 is fixed to the door bottom vertical frame 22, the rear side crosspiece 28, the rear side stand 26, and the baseboard 24 via a fixing tool such as a screw at the periphery. ing.

  Of each part of the frame material thus fixed, the door bottom vertical frame 22, the upper frame 23, the baseboard 24, the front side stand 25, the rear side stand 26, the front side crosspiece 27, the rear side crosspiece 28, the front A 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. Among the portions of the door pocket 34, one of the side portions in the prospective direction of the door pocket 34 (that is, the front side portion of the door pocket 34) is an upper frame 23, a baseboard 24, a front middle rail 27, a front upper door pocket board 29, and The front lower side door bag board 30 is provided (The upper frame 23, the baseboard 24, and the front side crosspiece 27 are arranged in parallel along the up-down direction at intervals). In addition, the other side portion (that is, the rear side portion of the door pocket 34) of the door pocket 34 is the upper frame 23, the baseboard 24, the rear middle rail 28, the rear upper door bag board 31, and the rear lower door pocket. A board 32 is provided (note that the upper frame 23, the baseboard 24, and the rear middle rail 28 are arranged in parallel with each other along the vertical direction). Further, the door 50 can be housed in the door bag 34 so that the door 50 can be inserted and removed freely. The door 50 is completely housed in the door bag 34 (however, a peripheral portion of a handle 69 described later of the door 50 will be described later). Is a state in which the door 50 is left in the fully open position without being housed in the door pocket 34 but left behind the front side stand 25 and the rear side stand 26 door pocket 34 (that is, fully open). State). The front and rear surfaces of the door pocket 34 are actually covered with a wall finishing material (for example, an interior decorative material). However, since this wall finishing material is known, illustration and description thereof are omitted.

(Configuration-Frame-Guide roller)
In FIG. 5, a guide roller 33 is a shake prevention means for preventing the lower end of the door 50 from shaking greatly in the front-rear direction. The guide roller 33 is arranged so that the position of its substantially center in the left-right direction is in the vicinity of the end surfaces of the front side stand 25 and the rear side stand 26 on the door end side. A column 33a fixed to the end of the column and a roller 33b that is rotatable about the column 33a and is disposed along the horizontal direction. And when this roller 33b is arrange | positioned inside the guide rail 57 mentioned later provided in the lower end of the door 50, the lower end of the door 50 shakes large in the front-back direction by making the door 50 run to the left-right direction. In such a case, it is possible to prevent the shake from further increasing due to the roller 33b hitting the guide rail 57.

(Configuration-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 bottom. FIG. 9 is a view showing a door body 60 to be 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 butt side, (f) is a 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 includes a door main body 60 (door body main body), a door-end cover 51, a door-end cover 52, and a door-end door cart. 53 (a combustible member), a door butt door 54 (a combustible member), a braking device 55, an opening prevention member 56, and a guide rail 57. The door 50 may be provided with a window having a known structure.

(Configuration-Door-Door body)
The door body 60 is an opening / closing body for opening and 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, a lock (shown). (Omitted) and a handle 69.

(Configuration-Door-Door body-Upper frame)
The upper frame 61 is an inner member disposed inside the door body 60 and is a long frame material having a length substantially corresponding to the length of the door body 60 in the left-right direction. It is arrange | positioned along the horizontal direction (finding direction) in a part. The upper frame 61 is formed, for example, as a steel material having a vertical U-shaped vertical cross section.

(Configuration-Door-Door body-Lower frame)
The lower frame 62 is an inner member disposed inside the door body 60, and is a long frame member having a length substantially corresponding to the length in the left-right direction of the door body 60. It is arrange | positioned along the horizontal direction (finding direction) in a part. The lower frame 62 is formed, for example, as a steel material whose vertical cross-sectional shape is an upward U-shape.

(Configuration-Door-Door body-Vertical frame)
The plurality of vertical frames 63 to 66 are inner members disposed inside the door body 60. The plurality of vertical frames 63 to 66 are arranged along the vertical direction 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 contact 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. Hereinafter, among the plurality of vertical frames 63 to 66, the vertical frame arranged closest to the door-end side is referred to as “door-end vertical frame” 63 as necessary, and the vertical frame arranged closest to the door-end side is referred to as “door-end vertical frame” 63. The vertical frame other than the door toe vertical frame 63 and the door bottom vertical frame 64 will be referred to as “intermediate vertical frames” 65 and 66 as necessary. Of these, the door-end vertical frame 63 is a long frame material having a length substantially corresponding to the length of the door body 60 in the vertical direction, 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 a later-described decorative door tip piece 68d by welding. The door bottom vertical frame 64 is a long frame material having a length shorter than the vertical length of the door body 60 (the length at which the lower end of the door bottom vertical frame 64 is located near the upper surface of the lower frame 62). The horizontal cross-sectional shape is a U-shaped member, and is a fixing material fixed to the back surface of a decorative door bottom piece 67d described later of the front decorative steel plate 67. The intermediate vertical frames 65 and 66 are 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 , A length located in the vicinity of the upper surface of the lower frame 62), a member having a U-shaped horizontal cross section, and both sides of the front decorative steel plate 67 and the rear decorative steel plate 68. It is fixed by a tape (not shown). Although the specific manufacturing method of these some vertical frames 63-66 is arbitrary, it is manufactured, for example by bending a hot-dip galvanized steel plate. In particular, the hot-dip galvanized steel sheet is not subjected to surface treatment with resin on any of the front surface, the back surface, and the end surface, so that it is not necessary to scrape off the resin before performing YAG welding. However, as the inner member disposed inside the door main body 60, if there is no problem in the strength of the door main body 60 or the joining structure described later, all or a part of the vertical frames 63 to 66 may be omitted, Instead of all or part of the frames 63 to 66, or in addition to all or part of the vertical frames 63 to 66, a heat insulating material or a core material may be used.

(Configuration-Door-Door body-Front decorative steel plate)
The front decorative steel sheet 67 is a decorative steel sheet that covers the upper frame 61, the lower frame 62, and the plurality of vertical frames 63 to 66 from the front side. The decorative main piece 67a arranged along the vertical direction, and the decorative main piece 67a A makeup upper piece 67b arranged along the horizontal direction from the upper end to the rear, a makeup lower piece 67c arranged along the horizontal direction from the lower end of the makeup main piece 67a to the rear, and a makeup main piece 67a. The door is provided with a decorative door butt piece 67d arranged along the vertical direction from the side edge on the door butt side to the rear. Of both side surfaces of the makeup main piece 67a, the makeup top piece 67b, the makeup bottom piece 67c, and the makeup door bottom piece 67d, the surfaces exposed on the front side (upper frame 61, lower frame 62, and a plurality of vertical frames 63 to 66). The surface opposite to the surface opposite to the surface (hereinafter referred to as “surface”) is subjected to surface treatment with a resin (for example, coating with a vinyl chloride resin or bonding with a film-like resin) for decoration or the like. On the other hand, the surface not exposed to the front side (the surface facing the upper frame 61, the lower frame 62, and the plurality of vertical frames 63 to 66, hereinafter referred to as the back surface) is not subjected to surface treatment with resin. Further, the end face of the makeup main piece 67a (the vertical face closest to the door tip, the so-called small edge) and the end faces of the makeup upper piece 67b, the makeup lower piece 67c, and the makeup door bottom piece 67d (most rearward). Similar to the back surface, the surface treatment with the resin is not performed on the vertical surface, which is a so-called small edge. Although the specific manufacturing method of such a front side decorative steel plate 67 is arbitrary, for example, surface treatment with resin is performed only on one side surface of a frontal steel plate, and the upper and lower ends of this steel plate and the door bottom side The front decorative steel sheet 67 can be manufactured by bending the end portion of the steel sheet.

(Configuration-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. The decorative main piece 68a arranged along the vertical direction, and this decorative main piece. A makeup upper piece 68b arranged along the horizontal direction from the upper end of 68a to the front, a makeup lower piece 68c arranged along the horizontal direction from the lower end of the makeup main piece 68a to the front, and a makeup main piece. 68a along the vertical direction so as to reach the front from the door end side end of the decorative main piece 68a and the decorative door tip piece 68d arranged along the vertical direction from the side edge on the door tip side of 68a. The decorative door bottom piece 68e is arranged. Of the both sides of the makeup main piece 68a, the makeup top piece 68b, the makeup bottom piece 68c, the makeup door tip piece 68d, and the makeup door bottom piece 68e, the surfaces exposed on the front side (the upper frame 61, the lower frame 62, a plurality of pieces) The surface opposite to the surface facing the vertical frames 63 to 66. Hereinafter, the surface is treated with a resin for decoration or the like (for example, coating with a vinyl chloride resin or bonding with a film-like resin) On the other hand, the surface not exposed to the front side (the surface facing the upper frame 61, the lower frame 62, and the plurality of vertical frames 63 to 66, hereinafter referred to as the back surface) is subjected to a surface treatment with resin. It has not been. Similarly to the back surface, the top surface 68b, the bottom surface piece 68c, the front door piece 68d, and the end face piece 68e of the decorative door (the vertical surface closest to the front, the so-called fore edge) are made of resin. No surface treatment is applied. Although the specific manufacturing method of such a rear decorative steel plate 68 is arbitrary, for example, only one side surface of a front rectangular steel plate is subjected to a surface treatment with a resin, and the upper, lower, left and right ends of the steel plate are bent. By processing, the rear decorative steel sheet 68 can be manufactured.

(Configuration-Door-Door body-Lock)
The lock is a fixing means for fixing the door body 60 in the fully closed position. This lock is arranged in the vicinity of the door-end vertical frame 63 inside the door main body 60, and includes a dead bolt and a thumb turn (both not shown). The bolt can be taken in and out of the door body 60 through a notch (not shown) formed in the door-end vertical frame 63, and the dead bolt can be freely attached to and detached from the bracket of the door-end vertical frame 21. By locking the door body 60, the door body 60 can be fixed at the fully closed position.

(Configuration-Door-Door body-Handle)
A 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. It is fixed at the position near the door.

(Configuration-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 cover 51 is a member having a vertical cross section that is U-shaped to the 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-end cover 51 substantially corresponds to the length (thickness) in the expected direction of the door body 60, and the door-side end of the door body 60 is located inside. In the accommodated state, the door body 60 is fixed to the door end side by a fixing portion (not shown) such as a screw. In addition, between the door end side end of the door body 60 and the door cover 51, the side surface of the door tip side of the door cover 51 is flush with the side surface of the door side of the lock. The spacer 51a for interposing is interposed.

(Configuration-door-door bottom cover)
The door bottom cover 52 is a cover provided on the door bottom side of the door body 60. The door bottom cover 52 is a member having a vertical U-shaped vertical cross section, 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 butt cover 52 is longer than the length (thickness) in the expected direction of the door body 60, and the door butt side end of the door body 60 is accommodated therein. In this state, the door body 60 is fixed to the door bottom side by a fixing portion (not shown) such as a screw.

(Configuration-Door-Door-to-door)
In FIG. 5, a door-end car 53 is a traveling means for allowing the door body 60 to travel (slidably moveable), and 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-end car 53 includes a base piece 53a and wheels 53b. The base piece 53 a 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 sheet 67 and the decorative upper piece 68b of the rear decorative steel sheet 68 are notched at positions corresponding to the base pieces 53a. 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 formed of resin and is rotatably fixed to the front side surface of the base piece 53a.

(Structure-Door-Tojiri door)
In FIG. 5, a door butt door 54 is a traveling means for allowing the door body 60 to travel (slidably moveable), and the 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 a position near the door bottom. The door butt door 54 includes a base piece 54a and wheels 54b. The base piece 54 a 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 67f at positions corresponding to the base pieces 54a. 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 formed of resin and is rotatably fixed to the front side surface of the base piece 54a.

  As shown in FIG. 5, the door toe door 53 and the door bottom door 54 are configured as described above, and the door to door door 53 and the door edge door 54 are arranged in parallel along the direction of finding (left and right direction). In a state where the door main body 60 is suspended and supported on the rail 23e so as to be placed on the rail 23e, the user pushes and pulls the door main body 60 in the left-right direction, whereby the door-end door 53 and the door bottom are placed 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-Braking device)
In FIG. 7, the braking device 55 is a braking means for braking the door body 60, and is fixed at a position closer to the door tip on the upper surface of the door body 60. The braking device 55 includes a gear (pinion gear; not shown) and resistance means (not shown) that applies resistance to the rotation of the gear. This gear meshes with the rack 23f described above, and when the door main body 60 is self-closed, resistance is applied to the rotation of the gear by the resistance means, whereby the door main body 60 is braked. In the present embodiment, the mounting position of the rack 23f is provided only at a position closer to the door tip where inspection can be performed with the inspection cover 23d opened, and therefore the door body 60 of the braking device 55 is also provided. However, when such a restriction can be ignored, the rack 23f and the braking device 55 may be provided at a position near the door bottom on the upper surface of the door body 60. .

(Configuration-Door-Opening prevention material)
In FIG. 5, the opening prevention member 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 away from each other, and is a vertically downward U-shaped member. The lower decorative steel plate 67 and the lower decorative steel plate 68 are disposed 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. The opening preventing member 56 is fixed 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, so that the lower end of the front decorative steel plate 67 and the lower end of the rear decorative steel plate 68 are fire-fighted. Even when heated by heat, the lower end of the front decorative steel plate 67 and the lower end of the rear decorative steel plate 68 are prevented from being separated from each other due to deformation or the like.

(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 horizontally between the lower end of the front decorative steel plate 67 and the lower end of the rear decorative steel plate 68. Are arranged along. In a state where the roller 33b is disposed inside the guide rail 57, when the lower end of the door 50 tends to swing greatly in the front-rear direction by running the door 50 in the left-right direction, the roller 33b is moved to the guide rail 57. It is prevented that the shake is further increased by hitting.

(Composition-Door-Bonding structure of decorative steel plate)
Next, the joining structure of the decorative steel plate in the door 50 will be described. This joining structure is roughly composed of either one of the front decorative steel plate 67 and the rear decorative steel plate 68, the end surface or the back surface, and the door bottom vertical frame 64 fixed to the other back surface or the back surface. Are joined together by welding.

(Structure-Door-Bonding structure of decorative steel sheet-Bonding structure on the door end side)
First, 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 50 will be described. FIG. 10 is an enlarged view of a region X in FIG. As shown in FIG. 10, the decorative main piece 67a of the front decorative steel sheet 67 is in a state in which the surface thereof is directed to the front side, the back surface thereof is directed to the rear side, and the end surface thereof is directed to the door side. It is arranged in the state facing to. Further, the end face of the decorative main piece 67a of the front decorative steel plate 67 protrudes slightly toward the door tip side than the decorative door tip piece 68d of the rear decorative steel plate 68 (for example, protrudes to the door tip side by a few mm). Hereinafter, the protruding portion is referred to as a makeup main piece protruding portion 67e). The protruding length of the decorative main piece protrusion 67e is arbitrary as long as YAG welding described later between the decorative main piece 67a and the decorative door tip piece 68d is possible.

  On the other hand, the decorative door tip piece 68d of the rear decorative steel plate 68 is in a state in which the surface thereof is directed to the door tip side, the back surface thereof is directed to the door bottom side, and the end surface thereof is directed to the front decorative steel plate 67. The makeup main piece 67a is arranged in a state directed toward the back surface of the makeup main piece protrusion 67e. Here, the expected length of the decorative door tip piece 68d of the rear decorative steel plate 68 is shorter than the expected length (thickness) of the door body 60 by the thickness of the decorative main piece 67a. Therefore, the end face 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 vertical surface thereof. In contact.

  The rear surface of the decorative main piece protrusion 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 arranged in this way are connected to each other (hereinafter referred to as a joint region). In the door end side joining region S1), they are fixed to each other by welding over substantially the entire length by known YAG welding. In particular, YAG welding makes it difficult for heat to diffuse by irradiating a laser to a relatively small spot, so the welding trace (overlay) can be made relatively small, and it is necessary to cut the welding trace with a sander or the like. There is an advantage that there is no. Here, since the surface treatment with the resin is not performed on the back surface of the decorative main piece 67a of the front decorative steel plate 67 and the end face of the decorative door tip piece 68d of the rear decorative steel plate 68, welding is performed by YAG welding. Since it is not necessary to scrape off the resin beforehand in order to perform, it is possible to reduce the manufacturing cost of the door 50 using the front decorative steel sheet 67 and the rear decorative steel sheet 68, compared to the case where the resin needs to be scraped off. become. Moreover, since it becomes possible to manufacture the door 50 using the front decorative steel plate 67 and the rear decorative steel plate 68 by welding, it is possible to improve the fireproof performance of the door 50 compared to the door manufactured by adhesion. Become. In addition, the door-end side joining area | region S1 of the front side decorative steel plate 67 and the rear side decorative steel plate 68 in the door-end side of such a door main body 60 was provided in the door-end side of the door main body 60, as shown in FIG. The door cover 51 is covered so as not to be exposed to the outside.

(Configuration-Door body-Bonding structure of decorative steel sheet-Bonding structure on the door bottom side)
Next, the joining structure of the front decorative steel plate 67 and the rear decorative steel plate 68 on the door bottom side of the door body 60 will be described. FIG. 11 is an enlarged view of a region Y in FIG. As shown in FIG. 11, the decorative door bottom piece 67d of the front decorative steel sheet 67 is in a state in which the surface is directed to the door bottom side, the back surface is directed to the door tip side, and the end surface thereof It is arranged in a state where is directed to the rear side. Here, the length in the expected direction of the decorative door bottom piece 67d of the front decorative steel plate 67 is slightly shorter than the length (thickness) in the expected direction of the door body 60 (for example, the makeup of the rear decorative steel plate 68). The difference between the length in the expected direction of the decorative door butt piece 67d and the length in the expected direction of the door body 60 is hereinafter referred to as a door butt first distance L1. ).

  The door butt vertical frame 64 is fixed to the decorative door butt piece 67d of the front decorative steel plate 67 formed as described above as described above. Here, as shown in FIGS. 9 and 11, among the plurality of vertical frames 63 to 66, vertical frames other than the door bottom vertical frame 64 (that is, the door front vertical frame 63 and the intermediate vertical frames 65 and 66) 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 the expected length of the decorative door butt piece 67d. Similarly to the length in the direction, it is slightly shorter than the length (thickness) in the expected direction of the door body 60 (it is shortened by the above-described first door bottom distance L1). For this reason, as shown in FIG. 11, the door bottom vertical frame 64 formed in this way is arranged such that the front side piece 64 a abuts the back surface of the decorative main piece 67 a of the front decorative steel plate 67. The rear side piece 64b is arranged at a position substantially corresponding to the end face of the decorative door bottom 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 is in a state in which the surface thereof is directed to the door butt side, the back surface thereof is directed to the door tip side, and the end surface thereof is the door butt vertical frame. It arrange | positions in the state which faced 64 side surfaces. 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 (for example, the front decorative steel plate 67 of the front decorative steel plate 67). The difference between the length in the left-right direction of the makeup main piece 68a and the length in the left-right direction of the makeup main piece 67a is hereinafter referred to as a door bottom second distance L2). And by providing the door butt second distance L2 in this way, the position in the left-right direction of the decorative door butt piece 68e of the rear decorative steel plate 68 is slightly more than the position of the end of the door body 60 on the door butt side. The position is closer to the front side (for example, the position is closer to the door front side by several mm than the decorative door bottom piece 67d of the front decorative steel sheet 67). Further, the length in the expected direction of the decorative door bottom piece 68e of the rear decorative steel plate 68 substantially corresponds to the above-described first door bottom distance L1. For this reason, the end surface of the decorative door butt 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 butt vertical frame 64 in substantially the entire vertical direction. In contact with each other.

  The rear surface of the side piece 64b of the door bottom vertical frame 64 arranged in this manner and the end surface of the door door piece 68e of the rear decorative steel plate 68 are connected to each other (hereinafter referred to as the door bottom side). In the joining region S2), they are fixed to each other by welding over substantially the entire length by known YAG welding. Here, all the side surfaces (including the rear surface of the side piece 64b) of the door bottom vertical frame 64 and the end surface of the decorative door bottom piece 68e of the rear decorative steel plate 68 are subjected to surface treatment with resin. Since there is no need to scrape off the resin beforehand in order to perform welding by YAG welding, the door using the front decorative steel sheet 67 and the rear decorative steel sheet 68 compared to the case where the resin needs to be scraped off. 50 manufacturing costs can be reduced. Moreover, since it becomes possible to manufacture the door 50 using the front decorative steel plate 67 and the rear decorative steel plate 68 by welding, it is possible to improve the fireproof performance of the door 50 compared to the door manufactured by adhesion. Become. In addition, the door bottom side joining area | region S2 of the front side decorative steel plate 67 and the back side decorative steel plate 68 in the door bottom side of such a door main body 60 was provided in the door bottom side of the door main body 60, as shown in FIG. The door cover 52 is covered so as not to be exposed to the outside.

(Structure-Door body-Bonding structure of decorative steel sheet-Upper bonding structure)
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 sheet 67 is arranged such that the end face on the rear side is located slightly in front of the center position in the expected direction of the upper frame 61. Yes. The front decorative steel plate 67 is fixed to the upper frame 61 by welding the end surface of the decorative upper piece 67b to the upper surface of the upper frame 61 by known arc welding. Further, the decorative upper piece 68b of the rear decorative steel plate 68 is arranged so that the front end face thereof is located slightly rearward of the center position in the expected direction of the upper frame 61. The rear decorative steel plate 68 is fixed to the upper frame 61 by welding the end surface of the decorative upper piece 68b to the upper surface of the upper frame 61 by known arc welding. In addition, the joining area | region (henceforth upper side joining area | region S3) of the front side decorative steel plate 67 and the back side decorative steel sheet 68 in the upper side of such a door main body 60 is not exposed outside by the upper frame 23, as shown in FIG. So that it is covered.

(Structure-Door body-Bonding structure of decorative steel sheet-Lower bonding structure)
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. And in the position above these lower ends, the back surface of the front decorative steel plate 67 and the back surface of the rear decorative steel plate 68 and the lower frame 62 are joined by a double-sided tape (not shown), so that the front decorative steel plate 67 and the rear A 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 bottom vertical frame 64 is fixed to a predetermined position of the decorative door bottom piece 67d of the front decorative steel plate 67 by welding. Specifically, a hole (not shown) along the longitudinal direction is formed in the door bottom vertical frame 64, and a known arc is formed from the door tip side of the door bottom vertical frame 64 through the hole. The door bottom vertical frame 64 is plug welded to the front decorative steel plate 67 and fixed by welding.

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

  Next, the front decorative steel plate 67 to which the door bottom vertical frame 64 is fixed as described above is placed on a pedestal (not shown) so that the surface of the decorative main piece 67a of the front decorative steel plate 67 contacts the pedestal. And the upper frame 61, the lower frame 62, and the intermediate | middle vertical frames 65 and 66 are fixed to the predetermined position in the back surface of this front side decorative steel plate 67 with a double-sided tape. Specifically, a double-sided tape is attached to the front side surface (the side surface in contact with the back surface of the front decorative steel plate 67) of the upper frame 61, the lower frame 62, and the intermediate vertical frames 65, 66, and the upper frame 61, the lower frame 62 The intermediate vertical frames 65 and 66 are fixed by being placed at predetermined positions on the back surface of the front decorative steel plate 67. At this time, a double-sided tape is also applied to the rear side surfaces of the upper frame 61, the lower frame 62, and the intermediate vertical frames 65, 66 (the side surfaces in contact with the back surface of the rear decorative steel plate 68). However, the release paper is left attached to the rear side surface of the 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 faces the pedestal. 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 alignment with reference to the door end side where the lock is provided. In particular, the alignment of the rear decorative steel sheet 68 with respect to the front decorative steel sheet 67 is facilitated by performing the alignment with the door end side as a reference and aligning the door bottom side later. That is, in the door bottom side joining structure, the position in the left-right direction of the decorative door bottom piece 68e of the rear decorative steel plate 68 is slightly closer to the door tip side than the position of the door bottom end of the door body 60. Since the margin between the position in the left-right direction of the makeup door butt piece 68e and the position of the door butt side end portion of the door body 60 is provided by the door butt second distance L2, the front side The positioning of the rear decorative steel plate 68 with respect to the decorative steel plate 67 can be performed while being shifted within the range of the Tojiri second distance L2, and the positioning becomes easy.

  Thereafter, the rear side surface of the rear side piece 64b of the door bottom vertical frame 64 fixed to the front side decorative steel plate 67 and the end surface of the decorative door bottom piece 68e of the rear decorative steel plate 68 are joined to the door bottom side. In region S2, welding is performed by YAG welding. However, this welding is performed as spot welding by temporary welding, so that the rear decorative steel plate 68 can be rotated and opened with respect to the front decorative steel plate 67 with this welding point as a fulcrum. Then, in such a state that the rear decorative steel plate 68 is rotated and opened, the release paper of the double-sided tape attached to the rear side surface of the upper frame 61, the lower frame 62, and the intermediate vertical frames 65, 66 is peeled off. Then, the rear decorative steel plate 68 is rotated and closed again, whereby 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. Thereafter, the rear side surface of the rear side piece 64b of the door bottom vertical frame 64 fixed to the front side decorative steel plate 67 and the end surface of the decorative door bottom piece 68e of the rear decorative steel plate 68 are joined to the door bottom side. In the region S2, welding is performed again by YAG welding.

  Next, the back surface of the decorative main piece protruding portion 67e of the decorative main piece 67a of the decorative decorative piece 67a of the front decorative steel plate 67 and the end surface of the decorative door tip piece 68d of the rear decorative decorative steel plate 68 are bonded to each other by YAG welding in the door tip side joining region S1. Weld. This welding is performed as a main welding over substantially the entire length from the beginning, whereby the joining of the front decorative steel plate 67 and the rear decorative steel plate 68 in the door-end side joining region S1 is completed.

  Further, the end surface of the decorative top piece 67 b of the front decorative steel plate 67 and the end surface of the decorative top piece 68 b of the rear decorative steel plate 68 are welded to the upper surface of the upper frame 61 in the upper joining region S <b> 3. This completes the joining of the front decorative steel plate 67 and the rear decorative steel plate 68 and the upper frame 61 on the upper side of the door body 60. This completes the manufacture of the door body 60.

  According to such a manufacturing method, since all YAG welding can be performed from the upper side to the lower side, YAG welding can be performed easily and accurately. However, the manufacturing method described above can be changed as appropriate, for example, the door end side joining and the door bottom side joining are performed in the reverse order.

(Mounting method of the door bag board)
Next, a method for attaching the door bag board will be described. In FIG. 3, first, in a known manner, the door end vertical frame 21, the door bottom vertical frame 22, the upper frame 23, the baseboard 24, the front side stand 25, the rear side stand 26, the front side crosspiece 27, and the rear The side middle rail 28 is attached.

  Next, the front upper door bag board 29, the front lower door bag board 30, the rear upper door bag board 31, and the rear lower door bag board 32 are attached. The specific procedure for attaching each door pocket board is as follows. 12 is a cross-sectional view taken along the line CC of FIG. In addition, in FIG. 12, it removes and shows except each door pocket board.

  First, with respect to the front lower door pocket board 30, the front lower door pocket board 30 is placed on the baseboard 24 so that the lower surface of the front lower door pocket board 30 is brought into contact with the upper surface of the baseboard 24 from the front side. Then, the front lower side doorboard board 30 is rotated and moved so that the upper end of the front lower side doorboard board 30 is in contact with the lower end of the front middle crosspiece 27 with this contact point as a fulcrum. Then, these are mutually fixed by fixing parts, such as a screw | thread, in the contact location of the front lower side doorbag board 30 and the baseboard 24, and the contact location of the front lower side doorbag board 30 and the front side crosspiece 27. This completes the attachment of the front lower side doorboard board 30. Further, the rear lower side doorboard board 32 is attached to the baseboard 24 and the rear middle rail 28 from the rear side in the same procedure as the front lower side doorbag board 30.

  Regarding the front upper doorboard board 29, first, from the front side, the upper frame (hook means) of the upper upper doorboard board 29 is provided on the upper frame upper piece 23b of the upper frame 23 (first frame material). The locking piece 23i (the piece (the hooked means) formed on the front side of the upper frame 23) is locked. That is, the upper end of the front upper doorboard board 29 is formed in a U-shaped vertical section downward, and the upper frame locking piece 23i of the upper frame 23 is formed in a U-shaped vertical section upward. The upper end of the upper doorboard board 29 can be detachably locked to the upper frame locking piece 23i. By engaging in this way, the front upper doorboard board 29 can be suspended from the upper frame 23, and the operator can release his hand from the front upper doorboard board 29. Then, the front upper doorboard board 29 is moved upward while moving the front upper doorboard board 29 so that the lower surface of the front upper doorboard board 29 is in contact with the upper surface of the front middle rail 27 (second frame member). Place on the front middle rail 27. Even in this mounting state, the vertical cross-section downward U-shaped portion at the upper end of the front upper doorboard board 29 and the vertical cross-section upward U-shaped portion of the upper frame locking piece 23i overlap each other in the expected direction. Thus, the front upper doorboard board 29 does not come off the upper frame 23 and falls to the front side, so that the operator can release his / her hand from the front upper doorboard board 29. Thereafter, at the contact point between the front upper doorboard board 29 and the upper frame locking piece 23i and at the contact point between the front upper doorboard board 29 and the front middle rail 27, these are fixed to each other with a fixing portion (or welded). ). This completes the mounting of the front upper doorboard board 29. Further, with respect to the rear upper doorboard board 31, the rear upper doorboard board 31 is placed on the rear middle rail 28 so that the lower surface of the rear upper doorbag board 31 is brought into contact with the upper surface of the rear middle rail 28 from the rear side. To do. Then, the rear upper doorboard board 31 is rotated and moved so that the upper end of the rear upper doorboard board 31 comes into contact with the lower end of the upper frame 23 with the contact portion as a fulcrum. Thereafter, at the contact point between the rear upper doorboard board 31 and the rear middle rail 28 and the contact point between the rear upper doorbag board 31 and the upper frame 23, these are mutually fixed by fixing parts (or welding) such as screws. Fix it.

  In this manner, the attachment of the front upper doorboard board 29 is started from the step of locking the front upper doorbag board 29 to the upper frame locking piece 23i of the upper frame 23, so that this mounting operation is performed more easily and safely. It becomes possible. In other words, it is conceivable to start from the step of bringing the front upper doorboard board 29 into contact with the upper surface of the front middle crosspiece 27. However, when starting from such a step, the front upper doorboard board 29 may fall. Since it is always present, the worker cannot release his / her hand from the front upper doorboard board 29 during the attachment work, and the attachment work is difficult. Further, another doorboard board that needs to simultaneously perform the step of fixing the upper end portion of the upper doorboard board 29 to the upper frame 23 and the step of fixing the lower end portion of the upper doorbag board 29 to the front middle rail 27. As in the former method, the attachment method is difficult because the operator cannot release his hand from the front upper doorboard board 29 during the attachment operation. On the other hand, when starting from the process of locking the front upper doorboard board 29 to the upper frame locking piece 23i of the upper frame 23 as described above, the operator can move from the front upper doorboard board 29 during the mounting operation. It is possible to release the hand, and it is possible to perform the mounting operation more easily and safely.

  Note that the attachment 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 above-described attachment order, and may be in any order. It is also possible to replace it 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, while another worker attaches the rear upper door pocket board 31 from the rear side. Etc.). Moreover, the attachment method is not limited to the attachment method described above, and may be performed by any method similar to the conventional one.

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

(Fire-proof structure-door carriage receiver)
As shown in FIG.5 and FIG.8, the door-end door cart 53 and the door-end door cart 54 are provided with door-car receptacles 53c and 54c. These door pulley receivers 53c and 54c are provided to prevent the wheels 53b and 54b from being exposed to the outside of the sliding door 10 or falling when the wheels 53b and 54b made of resin are dissolved and burned. It is a preventive measure. Specifically, the door carriage receivers 53 c and 54 c are steel materials having a vertical cross-sectional shape of an upward U shape, and are disposed between the wheels 53 b and 54 b and the door body 60. The positions and lengths of the door bearing receivers 53c and 54c in the expected direction are extended forward and rearward with the wheels 53b and 54b as the center so that the wheels 53b and 54b that are melted and burned can be received. . Similarly, the positions and lengths of the door wheel receivers 53c and 54c in the direction of finding are determined to the left and right with the wheels 53b and 54b as the center so that the wheels 53b and 54b can be received. It is extended to. In the present embodiment, as shown in FIG. 8, door door receivers 53 c and 54 c are separately attached to door to door door 53 and door to door door 54, respectively. You may make it attach one elongate door pulley receptacle 53c, 54c which reaches 54 continuously.

(Fire prevention structure-door blindfold)
FIG. 13 is an enlarged view of a region Z1 in FIG. FIG. 14 is an enlarged view of a region Z2 in FIG. As shown in FIGS. 5 and 8, the door butt door 54 includes a door door blind plate 54 d (fire spread suppression means). When the wheels 53b and 54b made of resin are dissolved and burned, the door blind cover 54d is exposed to the outside of the sliding door 10 or dropped or the like, so that the wheels 53b and 54b are removed. It is a member for preventing the fire from spreading through. That is, when a fire occurs on the rear side of the sliding door 10 and the frame body 20 is heated by heat from the fire, the front side stand 25 is particularly greatly deformed. The inspection cover 23d may also be greatly deformed. More specifically, among the left and right ends of the inspection cover 23d, the end on the door butt side close to the front side stand 25 bends and opens toward the rear side, so that the inspection cover 23d and the front side stand 25 are There is a possibility that a gap is formed between the door body 60 and the door body 60. In the case where the gap is formed in this way, when the wheel 54b of the door butt door 54 near the front side stand 25 is melted and burned, the flame caused by the melted combustion blows out from the gap to the outside of the sliding door 10 or melts. The fired 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 and fall through the gap. There was a risk of spreading the fire to the front side. Therefore, in order to solve such a problem, in the present embodiment, the door bottom blind car 54 is provided with a door blind cover 54d.

  This door-shaded blind plate 54d is disposed 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-end door wheel 54 in the prospective direction). It is a flat steel material, and is fixed to a door pulley receiver 54c of the door butt door 54 with a fixing tool such as a screw. Specifically, as shown in FIG. 13 and FIG. 14, a support plate 71 that supports an opening stopper 70 described later on the doorfold blind plate 54 d (so as to substantially cover the entire upper surface of the door body 60 (more specifically, By disposing at a predetermined distance L6 away from the front end of the plate-like member (provided to protrude forward from the front end of the door body 60) toward the inside in the prospective direction (front-rear direction), When the Tojiri doorwheel 54 is melted and burned by the heat of the fire, when the flame of the fire blows out forward of the doorwheel blindfold plate 54d through the gap between the doorfold blindfold plate 54d and the support plate 71, The flame that has blown out is shielded by a portion of the support plate 71 that protrudes forward from the doorfold blind plate 54d (that is, a portion corresponding to the predetermined distance L6), so that the flame burns downward. The door can be suppressed. In this case, for the length of the predetermined distance L6, for example, when the flame of the fire blows out to the front side of the doorfold blind plate 54d through the gap between the doorfold blindfold plate 54d and the support plate 71, It is desirable to set the length to be longer than the length that can prevent the flame from burning off downward. By installing the doorfold blind plate 54d in this way, even when the doorfold blind plate 54d is provided on the upper surface of the door main body 60, the doorfold blindfold 54d becomes the door bottom door 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 main body 60, it can be prevented from coming into contact with various components attached to the upper frame 23, and the sliding movement of the door 50 is obstructed by the doorwheel blindfold plate 54d. In addition, it is possible to avoid damage to the door shade blind plate 54d due to contact with the door bottom door 54 or the upper frame 23. In addition, compared to the case where the doorfold blind plate 54d is disposed at a position in front of the support plate 71 (or a position that is flush with the front end portion of the support plate 71), the door bottom doorwheel 54 is dissolved and burned by the heat of the fire. In such a case, when the flame of the fire blows to the front side of the doorwheel blindfold plate 54d through the space between the doorfold blindfold plate 54d and the support plate 71, the blown-out flame burns down toward the lower side. Since it can suppress, it can also suppress that the said flame which blows off blows out the space enclosed by the upper frame 23 and the door main body 60. FIG. In the embodiment, as shown in FIG. 14, the doorfold blind plate 54 d is installed with a gap from the support plate 71. However, the present invention is not limited to this. For example, a fire flame blows out from this gap. In order to prevent this, the doorfold blind plate 54d may be installed so that the lower end of the doorfold blind plate 54d and the upper surface of the support plate 71 are in contact with each other.

  In addition, regarding the setting method of the size and installation position of the door blind cover 54d, in the present embodiment, when the door bottom door 54 is burned by the heat of the fire, the flame generated by the combustion is generated on the front side of the sliding door 10. In order to suppress burning, the door side blind plate 54d covers at least the entire side surface in one of the prospective directions of the door butt door 54 (that is, the entire front surface of the door butt door 54) and the vicinity thereof. To decide. Here, the “vicinity region” means a region close to the Tojiri doorwheel 54. In the present embodiment, when the Tojiri doorwheel 54 is dissolved and burned by the heat of the fire, it is generated by the melting and burning. However, the present invention is not limited to this. For example, the area may be wider than the area where the flame may reach. In addition, the area covered by the door blind cover 54d is set as follows. Specifically, as shown in FIG. 5 and FIG. 8, the vertical region is located upward from the lower end of the door carriage receiver 54 c so as to be substantially the same length as the vertical length of the door bottom door wheel 54. The area is set to reach the predetermined distance L3. Note that the length of the predetermined distance L3 is not limited to the length substantially the same as the vertical length of the door butt door 54 described above. For example, another part (not shown) located directly above the door blindfold 54d. When there is no known fire door release (for example, a known fire door), the length of the upper end of the doorfold blind plate 54d may be set near the upper frame upper piece 23b. Or when the said other components exist, it is longer (or shorter) than the length in the up-and-down direction of the door bottom door wheel 54, and the upper end of the door wheel blind plate 54d is longer than the length located in the vicinity of the upper frame upper piece 23b. Alternatively, the length may be set to a short length (specifically, the length at which the upper end of the door blindfold plate 54d is located near the lower end of another component). Further, as shown in FIG. 5 and FIG. 8, the melted and burned door sill door 54 (particularly, the wheel 54 b) is obtained even when a gap is formed by the deformation of the inspection cover 23 d as shown in FIGS. 5 and 8. In addition to being able to conceal the area in the vicinity thereof, the flame caused by the melting and combustion is caused by the airflow flowing in the space surrounded by the upper frame 23 and the door body 60 (i.e., the side of the doorfold blind plate 54d on the side in the direction of finding) It is set to a region where it is possible to prevent the flame from burning to the front side of the sliding door 10 by wrapping around the left side or the right side of the blindfold plate 54d. More specifically, the wheel has a length that is longer than the longer one of the length in the direction in which the door butt door 54 is found (left and right direction) and the length in the direction in which the door wheel receiver 54 c is found (left and right direction). The region is set to include a region that reaches the predetermined distance L4 from the center of the wheel 54b to the left and a region that reaches the predetermined distance L5 from the center of the wheel 54b to the right. In this case, with respect to 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 shade blind plate 54d (for example, a sliding door that is different from the sliding door 10) The predetermined distance L4 and the predetermined distance L5 are set to substantially the same length. However, the present invention is not limited to this. For example, either the predetermined distance L4 or the predetermined distance L5 is used. One may be set to be longer than either the predetermined distance L4 or the predetermined distance L5. In addition, in the present embodiment, the length of the predetermined distance L5 is set to a length in which the end portion on the door butt side of the door shade blind plate 54d is flush with the end portion on the door butt side of the door body 60. However, the present invention is not limited to this. For example, the length of the door bottom side end of the door cover blind plate 54d extends from the door bottom end of the door body 60 toward the door bottom side of the door bag 34 (however, Collision preventing member 58 having stretchability provided at the end of door body 60 on the door butt side (specifically, collision preventing member 58 in a state of colliding with the door butt side end of door bag 34 and contracting) It may be set to a length that does not protrude toward the door bottom side of the door bag 34). Alternatively, when the shielding performance of the door shade blind plate 54d is sufficiently obtained, the door bottom side end of the door shade blind plate 54d is located inside the door body 60 in the direction of finding (left and right direction) more than the door bottom side end. You may set to the length located in. With such a configuration, when a fire occurs on the rear side of the sliding door 10 in the fully closed state, when the door butt door 54 is melted and burned by the heat of the fire, it is generated by the door burner blind cover 54d due to the melting and burning. The flame and dissolved resin can be shielded, and the dissolved and burned door butt door 54 can be prevented from being exposed and dropped. Therefore, since it can suppress that the said fire spreads to the front side of the sliding door 10, it becomes possible to improve the fireproof performance of the sliding door 10. FIG. In addition, regarding the door-end door cart 53, the door-door blindfold plate 54d is not provided. The reason for this is that even if the front side stand 25 is greatly deformed, the deformation of the end of the inspection cover 23d on the door-end side is not so large, and the end of the inspection cover 23d on the door-end side is not This is because a structure for suppressing deformation can be provided. However, the door-end door cart 53 may also be provided with a door-door blind plate 54d. Moreover, you may make it attach one elongate door-door blindfold board 54d which continues from the door-end door-to-door 53 to the door-end door-wheel 54. FIG.

  Further, the doorfold blind plate 54d can be made of an arbitrary material. However, for example, the doorfold blindfold plate 54d is nonflammable and can prevent the shape of the doorfold blindfold plate 54d from changing due to the heat of the fire. It is preferable to manufacture with a material such as a steel material, a stainless steel material, or a calcium silicate plate. Thereby, it is possible to maintain the shielding performance of the door shade cover 54d, and to further improve the fire prevention performance of the sliding door 10. Further, the doorfold blind plate 54d can be manufactured by an arbitrary method. However, in the present embodiment, it is separated from the doorrest receiver 54c so that the installation work of the doortail doorwheel 54 can be easily performed. By forming the door to the door, the door blind cover 54d can be manufactured.

(Fireproof structure-rail resin receiver)
As shown in FIGS. 5 and 7, the upper frame 23 includes a rail resin receiver 23g. The rail resin receiver 23g is a rack fall prevention for preventing the rack 23f from being exposed to the outside of the sliding door 10 or falling 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 the position and length 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 direction of finding are positions and lengths corresponding to the rack 23f so that the melted and burned rack 23f can be received. In addition, by providing lids (not shown) for closing the end portions in both end portions in the direction of finding the rail resin receiver 23g (left and right direction), the molten and burned resin is in the direction of finding the rail resin receiver 23g. Leakage from both ends in the (left-right direction) can be suppressed.

(Fire prevention structure-heating foam)
Further, as shown in FIG. 5, the upper frame 23 includes a heat-heating foam material 23h. This heat-heating foam material 23h prevents a 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 heat from a fire. This is a member for preventing the flame from coming out of the gap. Although this heat-heating foam material 23h can be provided in any place where such a gap can be formed, in the present embodiment, the door main body 60 on the front side surface of the inspection cover 23d of the upper frame 23 is provided on the door main body 60. It is provided at a position facing the door body 60 on the opposite position and on the rear side surface of the upper frame base 23a of the upper frame 23, respectively. When the heat-heated foam material 23h is heated by heat from the fire, the heat-heat foam material 23h is expanded and expanded, thereby forming a gap between the upper frame 23 and the door body 60. To prevent.

(Fireproof structure-Opening stopper)
As shown in FIGS. 3 and 5, an opening stopper 70 is provided at a position closer to the door tip on the upper surface of the door body 60 (a position near the lower side of the door-end door cart 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 heat from a fire. It 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 a vertical cross-section of a downward L-shape, and a support plate provided on the upper surface of the door body 60 When the upper cover 23 and the door main body 60 are deformed and the inspection cover 23d is deformed forward, the inspection cover 23d is extended to the front position with respect to the lower end of the inspection cover 23d. The inspection cover 23d is further prevented from being deformed by being locked against the upper cover 23, 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. However, the present invention is not limited to this. For example, when it is possible to ensure that the door body 60 can be smoothly slid, the opening stopper 70 may be provided at a position near the door bottom on the upper surface of the door body 60. Alternatively, one long opening stopper 70 may be provided that extends from a position near the door tip to a position near the door bottom on the upper surface of the door body 60.

(Effect of embodiment)
As described above, according to the embodiment, one end face or the back surface of the front decorative steel plate 67 and the rear decorative steel plate 68 is joined to either the other back surface or the fixing material by welding. There is no need to weld the surface of the decorative steel plate 68. For this reason, it becomes unnecessary to scrape off the resin on the surface of the front decorative steel sheet 67 and the rear decorative steel sheet 68 before welding, and manufacture of the door 50 using the decorative steel sheet as compared with the case where the resin on the surface needs to be scraped off. Cost can be reduced. Moreover, since it becomes possible to manufacture the door 50 using a decorative steel plate by welding, it becomes possible to improve the fireproof performance of the door 50 compared to the door manufactured by adhesion. Moreover, it becomes possible to improve the intensity | strength of the door main body 60 by joining the front side decorative steel plate 67 and the rear side decorative steel plate 68 by welding.

  In addition, by using a fixing material at the end of the door 50 on the door bottom side, one end face of the front decorative steel sheet 67 and the rear decorative steel sheet 68 is directly abutted against one of the other back faces. Even if it is difficult to perform the process, the front decorative steel plate 67 and the rear decorative steel plate 68 can be joined by welding.

  Moreover, since it can join without using a fixing material in the edge part of the door-end side of the door 50, it becomes possible to ensure easily the space for attaching a lock to the edge part of the door-end side. .

[III] Modifications to Embodiments While the embodiments of the present invention have been described above, specific configurations and means of the present invention are within the scope of the technical idea of each invention described in the claims. Any modification and improvement can be made. Hereinafter, such a modification will be described.

(About problems to be solved and effects of the invention)
First, the problems to be solved by the invention and the effects of the invention are not limited to the above-described contents, and the present invention solves the problems not described above or has the effects not described above. There are also cases where only some of the described problems are solved or only some of the described effects are achieved. For example, even if the manufacturing cost of the door 50 is about the same as the conventional one, the problem of the present application is solved when the manufacturing cost is the same as the conventional one due to the 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 the design of the heavy door needs to be matched with the design of the lightweight door has been explained, but the design of the heavy door need not be matched with the design of the lightweight door In addition, even when manufacturing an arbitrary door other than a heavy door, the present invention is useful in all cases where a door is manufactured using a front surface material and a rear surface material which are decorative steel plates.

(About joining of decorative steel plate)
In the above embodiment, the joint structure of the front decorative steel plate 67 and the rear decorative steel plate 68 on the door tip side of the door body 60 shown in FIG. 10 and the front makeup on the door bottom side of the door main body 60 shown in FIG. Although the joining structure of the steel plate 67 and the rear decorative steel plate 68 has been described as a mutually different structure, both may be the same structure (for example, the joining structure on the door-end side is different from that on the door-end side and the door-end side). It may be applied to both, or the joint structure on the door butt side may be applied to both the door tip side and the door butt side), or both may be interchanged. Moreover, the joining structure of the front decorative steel sheet 67 and the rear decorative steel sheet 68 on the door tip side of the door body 60, and the joining structure of the front decorative steel sheet 67 and the rear decorative steel sheet 68 on the door bottom side of the door body 60, Each of the doors 50 may have a structure that is symmetrical in the front-rear direction with a center line passing through a substantially central position in the expected direction of the door 50 (for example, as described above, the back surface of the front decorative steel sheet 67 and the end surface of the rear decorative steel sheet 68). And a structure in which the end face of the front decorative steel sheet 67 and the back surface of the rear decorative steel sheet 68 are joined by welding, for example. However, since the lock is attached to the door end side of the door body 60, from the viewpoint of securing this mounting space, the joint structure shown in FIG. 10 is adopted on the door tip side rather than the joint structure shown in FIG. It is preferable to do.

  Moreover, it is set as the structure which joins these end surfaces and a back surface mutually by welding in the state which faced any one back surface or the back surface among either the front side decorative steel plate 67 and the back side decorative steel plate 68. In some cases, other structures may be employed. FIG. 15 is a diagram according to a modification, and is a diagram corresponding to FIG. 11. As shown in FIG. 15, the decorative door bottom piece 67d of the front decorative steel sheet 67 has a first end 67g bent about 90 degrees along the left-right direction as a rear end, and this And a second end portion 67h bent from the first end portion 67g toward the door butt side along the left-right direction by about 180 degrees. By forming the first end portion 67g and the second end portion 67h in this manner, the back surface of the decorative door bottom piece 67d of the front decorative steel sheet 67 (more specifically, the back surface of the second end portion 67h) is on the rear side. It is supposed to be exposed. And the state where the end face of the decorative door bottom piece 68e of the rear decorative steel plate 68 is abutted so as to be substantially orthogonal to the entire back surface in the vertical direction with respect to the back surface of the decorative door bottom piece 67d of the front decorative steel plate 67. In contact. The back surface of the decorative door butt piece 67d of the front decorative steel plate 67 and the end surface of the decorative door butt piece 68e of the rear decorative steel plate 68 arranged in this way are connected to each other (the door butt side bonding region S2). Are fixed to each other by welding over substantially the entire length by known YAG welding. Even in such a joint structure, since the back surface of the decorative door bottom piece 67d of the front decorative steel plate 67 and the end surface of the decorative door bottom piece 68e of the rear decorative steel plate 68 are not subjected to surface treatment with resin, Since it is not necessary to scrape off the resin beforehand in order to perform welding by YAG welding, the manufacturing cost of the door 50 using the front decorative steel sheet 67 and the rear decorative steel sheet 68 is required compared to the case where the resin needs to be scraped off. Can be reduced. Moreover, since it becomes possible to manufacture the door 50 using the front decorative steel plate 67 and the rear decorative steel plate 68 by welding, the strength of the door main 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 decorative steel plate 67 and the rear decorative steel plate 68 on the door bottom side of the door body 60 may be the same as that of the door 50. You may make it the structure which becomes symmetrical with respect to the center line which passes along the approximate center position in an expected direction. However, when there is no manufacturing equipment for forming the first end 67g and the second end 67h as shown in FIG. 15 or when it is desired to avoid the labor required for this formation, the structure shown in FIG. 11 should be adopted. Is more preferable.

  Alternatively, one of the front decorative steel plate 67 and the rear decorative steel plate 68, either one of the end surfaces or the back surface, and the other back surface or the fixing material fixed to the back surface can be mutually matched. You may join by welding. FIG. 16 is a diagram according to another modification, and is a diagram corresponding to FIG. 11. As shown in FIG. 16, with respect to the rear decorative steel plate 68, the decorative door butt piece 68e shown in FIG. 11 is omitted, and the back surface of the end portion on the door butt side of the decorative main piece 68a The frame 64 abuts substantially parallel to the rear surface of the rear side piece 64b. The length in the left-right direction of the decorative main piece 68a is slightly shorter than the length in the left-right direction of the decorative main piece 67a of the front decorative steel plate 67, and the length in the left-right direction of the decorative main piece 68a is the same as in FIG. And a second bottom edge distance L2 that is a difference between the length of the makeup main piece 67a in the left-right direction is provided. And by providing the door butt second distance L2 in this way, the position of the end surface on the door butt side of the decorative main piece 68a of the rear decorative steel plate 68 is more than the position of the end of the door body 60 on the door butt side. The position is slightly closer to the door. And the back surface of the edge part of the door bottom side of the makeup | decoration main piece 68a of this back side decorative steel plate 68 and the back side surface in the side piece 64b of the back side of the door bottom vertical frame 64 are the door bottoms between each other. In the side joining region S2, they are fixed to each other by welding over substantially the entire length by known YAG welding. Also in such a joining structure, the back surface of the door bottom side end portion of the decorative main piece 68a of the rear decorative steel plate 68 and the rear surface of the rear side piece 64b of the door bottom vertical frame 64 are made of resin. Since the surface treatment by is not performed, it is not necessary to scrape off the resin in advance in order to perform welding by YAG welding. Therefore, compared to the case where it is necessary to scrape off the resin, the front decorative steel plate 67 and the rear side The manufacturing cost of the door 50 using the decorative steel plate 68 can be reduced. Moreover, since it becomes possible to manufacture the door 50 using the front decorative steel plate 67 and the rear decorative steel plate 68 by welding, the strength of the door main 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 decorative steel plate 67 and the rear decorative steel plate 68 on the door bottom side of the door body 60 is the same as that of the door 50. You may make it the structure which becomes symmetrical with respect to the center line which passes along the approximate center position in an expected direction.

  In addition, as described 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 main body 60, and the front decorative steel plate 67 and the rear decorative plate on the door bottom side of the door main body 60. A joining structure with the steel plate 68 may be adopted as a 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. Furthermore, when it is necessary to join the front decorative steel plate 67 and the rear decorative steel plate 68 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 of the front decorative steel plate 67 and the rear decorative steel plate 68 on the door tip side of the door main body 60 and the front decorative steel plate 67 and the rear side on the door bottom side of the door main body 60 described in the above embodiment. One of the joining structures with the decorative steel plate 68 may be performed by fillet welding or the like. However, fillet welding, etc., does not cause such problems because finishing after welding (cutting of welding marks with a sander, etc.) is required and welding over the entire length of the member becomes difficult. More preferably, welding is performed.

(About welding)
In the embodiment described above, the joining of the front decorative steel sheet 67 and the rear decorative steel sheet 68 and the joining of the rear decorative steel sheet 68 and the door bottom vertical frame 64 are performed by YAG welding. Any welding other than YAG welding can be applied as long as it conforms to, for example, laser welding other than YAG welding (carbon dioxide laser welding, semiconductor laser welding, etc.), electron beam welding, resistance welding, argon welding, Ultrasonic welding or the like may be applied.

(Mounting method of the door bag board)
In the above embodiment, only with respect to 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 moved to the front middle. Although it demonstrated that it attached by mounting in the crosspiece 27, it is not restricted to this. For example, a door bag board other than the front upper door bag board 29 (that is, the front lower door bag board 30, the rear upper door bag board 31, or the rear lower door bag board 32) is the same as the method for mounting the front upper door bag 29 described above. You may attach by the method of. Moreover, in the said embodiment, it demonstrated that the attachment method of the said front upper side doorboard board 29 was applied when one of the side parts of the prospective direction of the doorbag 34 was equipped with the several doorcase board. However, the present invention is not limited to this. For example, the present invention may be applied to a case where only one door bag 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 doorboard 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 doorboard board 29, the hooking means may be provided in the vicinity of the upper end of the front upper doorbag board 29.

(About combustible materials)
In the said embodiment, although the combustible member demonstrated that it was the door-end door car 53 and the door-end door car 54, it is not restricted to this. For example, any flammable member provided in a space surrounded by the upper frame 23 and the door main body 60 may be used. As an example, a braking device 55 (specifically, a brake including a resin member) attached to the door main body 60 is used. Apparatus 55), a rack 23f attached to the upper frame 23, or the like.

(About the door-folder blindfold)
In the above-described embodiment, it has been described that the doorfold blind plate 54d is attached to the door 50 (specifically, the doorrest receiver 54c of the door butt door 54), but is not limited thereto. For example, when it is difficult to attach the door blindfold plate 54d to the door 50 due to the configuration or shape of the door 50, the door 50 may be attached to the upper frame 23.

  Moreover, although the said embodiment demonstrated that the door-shaded blind board 54d was provided in the front side of the door-end door 54, it is not restricted to this. For example, in addition to this, on the rear side of the door-end door 54 so as to cover the entire side surface on the other side of the prospective direction of the door-end door 54 (that is, the entire rear surface of the door-end door 54) and the vicinity thereof. Further, it may be provided. Thereby, when the door butt door 54 burns with 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.

(First note)
The door of the first supplementary note 1 is a door for opening and closing an opening of a building, and includes an inner member disposed inside the door, a front decorative steel plate that covers the inner member from the front side, and the inner member A rear decorative steel sheet that covers the rear side of the front decorative steel sheet and the rear decorative steel sheet, either one of the end face or the back face, and the other back face or the fixing material fixed to the back face. Are joined together by welding.

  The door according to the first supplementary note 2 is the door according to the first supplementary note 1, wherein one end face of the front decorative steel plate and the rear decorative steel plate is provided at an end of the door on the door bottom side. 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 of the first supplementary note 3 is the door according to the first supplementary note 1 or 2, and at the end of the door at the door end side, either the front decorative steel plate or the rear decorative steel plate. These end surfaces and the back surface are joined to each other by welding in a state where the end surface is abutted against one of the other back surfaces.

(Effect of the first supplementary note)
According to the door described in the first supplementary note 1, since one end surface or the back surface of the front decorative steel plate and the rear decorative steel plate is joined to either the other back surface or the fixing material by welding, the front decorative steel plate and the rear side There is no need to weld the surface of the decorative steel sheet. For this reason, it is no longer necessary to scrape off the resin on the front and rear decorative steel sheets before welding, reducing the manufacturing cost of doors using decorative steel sheets compared to the need to scrape off the resin on the surface. It becomes possible to do. Moreover, since it becomes possible to manufacture the door using a decorative steel plate by welding, it becomes possible to improve the fireproof performance of a door compared with the door manufactured by adhesion | attachment. Moreover, it becomes possible to improve the intensity | strength of a door main body by joining a front side decorative steel plate and a rear decorative steel plate by welding.

  According to the door of the first supplementary note 2, one end surface of the front decorative steel sheet and the rear decorative steel sheet is selected by performing bonding using a fixing material at an end of the door on the door bottom side. Even if it is difficult to directly match the other back surface, the front decorative steel sheet and the rear decorative steel sheet can be joined by welding.

  According to the door of 1st supplementary note 3, since it can join without using a fixing material in the edge part of the door-end side of a door, the space for attaching a lock to the edge part of the door-end side Can be easily secured.

(Second supplementary note)
The door of the second supplementary note 1 includes a frame provided at the periphery of the opening of the building, a door that is opened and closed by sliding the opening, and a fully open that opens the opening by the door. A door pocket that houses the door body in a state, and when a fire occurs in the fully closed state in which the opening is fully closed by the door body, the frame material constituting the frame body When the combustible member provided in the space surrounded by the frame member located on the upper side and the door body of the door body burns due to the heat of the fire, the fire spreads through the combustible member. In the fully closed state, there is provided a fire spread suppressing means that covers at least the entire side surface of the combustible member in the prospective direction and the vicinity thereof in the fully closed state.

  The door of the second supplementary note 2 is the door of the second supplementary note 1, and when the plurality of combustible members are arranged in parallel along the direction of finding, the fire spread suppressing means causes the door to be in the fully closed state. The entire side surface on one side of the prospective direction of the combustible member located on the door bottom side of the door body and the vicinity thereof are covered among the plurality of combustible members.

  The door according to the second supplementary note 3 is the door according to the second supplementary note 1 or 2, wherein the combustible member is a door wheel provided on an upper surface of the door body main body, and allows the door body to slide. A spreader, and the fire spread suppressing means is spaced from each of the overlapping member and the doorwheel between the doorwheel and the member overlapping the doorwheel in the prospective direction among the members constituting the frame member. And fixed to the door body main body.

  The door of the second supplementary note 4 is the door according to any one of the second supplementary notes 1 to 3, wherein the fire spread suppressing means is nonflammable and the fire spread suppressing means by heat of the fire. It was made of a material capable of suppressing the change in shape of the material.

(Effect of the second supplementary note)
According to the door described in the second supplementary note 1, when a fire occurs in the fully closed state, the space surrounded by the frame material positioned on the upper side of the frame material constituting the frame and the door body main body. When the combustible member provided inside burns due to the heat of the fire, it is equipped with a fire spread suppressing means that covers at least the entire side surface in the prospective direction of the combustible member in the fully closed state and the region in the vicinity thereof. When a fire occurs on either side of the door in the fully closed state, when the combustible member burns with the heat of the fire, the fire spread suppression means may block the flame generated by the combustion. it can. Therefore, since it can suppress that the said fire spreads to the other side of the prospective direction of a door body, it becomes possible to improve the fireproof performance of a door.

  According to the door described in the second supplementary note 2, when a plurality of combustible members are arranged in parallel along the direction of finding, at least a door of the door body among the plurality of combustible members in the fully closed state by the fire spread suppressing means. Covers the entire side surface in the prospective direction of the combustible member located on the bottom side and the vicinity thereof, so that it is located on the door bottom side of the door where a gap between the door body and the frame material is easily formed in the fully closed state. When the combustible member to be burned is burned by the heat of the fire, it is possible to shield the flame generated by the fire by the fire spread suppressing means, and to further suppress the fire from spreading.

  According to the door described in the second supplementary note 3, each of the overlapping member and the door wheel is arranged between the door wheel and the member that overlaps with the door wheel in the prospective direction among the members constituting the frame material. And is fixed to the door body main body, even when the fire spread suppressing means is provided on the upper surface of the door body main body, when the door body is slid, the fire spread suppressing means is a door wheel or The contact with the frame material can be prevented, the sliding movement of the door body can be prevented from being hindered by the fire spread suppressing means, and the fire spread suppressing means can be prevented from being damaged.

  According to the door described in the second supplementary note 4, the fire spread suppressing means is made of a material that has nonflammability and can suppress the shape of the fire spread suppressing means from being changed by the heat of a 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 supplementary note)
The door of the third supplementary note 1 includes a door body that is slid by opening and closing an opening of a building, and a door pocket that houses the door body in a fully open state in which the opening is fully opened by the door body. The side portion in the prospective direction of the door pocket is a long frame member arranged along the direction of finding, and a pair of frame members arranged side by side along the vertical direction, A substantially plate-like door pocket board provided between the pair of frame members, and the first frame member, which is a frame member positioned above the door bag board, of the pair of frame members, And a hooking means for hooking the hooked means on the upper side of the doorbag board, the hooking means being hooked on the hooked means, and then the doorbag board of the pair of frame members. On the upper side of the second frame member, which is a frame member located on the lower side of the doorcase board By placing a portion of the lower side, and can be attached to the door pocket board relative to the first frame member and said second frame member.

(Effect of the third supplementary note)
According to the door of the third supplementary note 1, the hook means is provided on the first frame member, the hook means for hooking the hook means is provided on the upper side of the door bag board, and the hook means is hooked. After hooking the means, by placing the lower part of the door pocket board on the upper part of the second frame member, the door pocket board can be attached to the first frame member and the second frame member. Therefore, compared to a door that needs to simultaneously perform the process of fixing the upper end of the door pocket board to the first frame member and the process of fixing the lower end of the door bag board to the second frame member, Can be easily and safely performed. Moreover, when the side part of the prospective direction of a door pocket is provided with several pairs of frame materials and several door pocket boards, each door pocket board can be attached without minding the attachment order of a door pocket board. . From the above, it is possible to improve the installation property of the door.

DESCRIPTION OF SYMBOLS 1 Housing 2 Opening part 10 Sliding door 20 Frame 21 Door tip vertical frame 22 Door bottom vertical frame 23 Upper frame 23a Upper frame base 23b Upper frame upper piece 23c Upper frame front piece 23d Inspection cover 23e Rail 23f Rack 23g Rail resin receptacle 23h Heat Heating foam material 23i Upper frame locking piece 24 Skirting board 25 Front side stand 26 Rear side stand 27 Front side middle rail 28 Rear side middle rail 29 Front upper doorboard board 30 Front lower doorcase board 31 Rear upper doorbag 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 bottom cover 53 Door door car 53a Base piece 53b Wheel 53c Door car receiver 54 Door edge door 54a Base piece 54b Wheel 54c Door car door cover 54d Plate 55 Brake device 56 Opening prevention material 57 Guide rail 58 Collision prevention Stop member 60 Door body 61 Upper frame 62 Lower frame 63 Vertical frame (vertical frame at the door end)
64 Vertical frame (Tojiri vertical frame)
64a, 64b Side piece 65, 66 Vertical frame (intermediate vertical frame)
67 Front side decorative steel plate 67a Makeup main piece 67b Makeup top piece 67c Makeup bottom piece 67d Makeup door bottom piece 67e Makeup main piece protrusion 67f Notch 67g First end 67h Second end 68 Rear side decorative steel plate 68a Makeup main piece 68b Makeup top piece 68c Makeup bottom piece 68d Makeup door tip piece 68e Makeup door bottom piece 68f Notch 69 Handle 70 Opening stopper 71 Support plate S1 Door tip side joining area S2 Door bottom side joining area S3 Upper joining area

Claims (3)

A door for opening and closing an opening of a building,
An inner member disposed inside the door;
A front decorative steel sheet covering the inner member from the front side;
A rear decorative steel sheet covering the inner member from the rear side;
Of the front decorative steel sheet and the rear decorative steel sheet, either one of the end faces or the back face, and the other back face or the fixing material fixed to the back face were joined together by welding.
door. At the end of the door on the door bottom side, in the state where either one of the front decorative steel plate and the rear decorative steel plate is butted against the fixing material fixed to the other back surface, The end face and the fixing material are joined together by welding.
The door according to claim 1. At the door end side end of the door, in the state where either one of the front decorative steel plate and the rear decorative steel plate is abutted against the other back surface, the end surface and the back surface are mutually connected. Joined by welding,
The door according to claim 1 or 2.

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