JP5681405B2 - Door body - Google Patents

Description

  The present invention relates to a technical field of door bodies provided at entrances and exits of buildings such as office buildings and factories.

  In general, in a building such as an office building or factory, a steel door body composed of a pair of front and back face plates made of a metal plate material and a core material interposed between these face plates is provided at the entrance / exit. Such a steel door body has conventionally been provided with a frame material composed of a C-shaped channel at least around the circumference between the front and back face plates in order to increase strength and dimensional accuracy. However, in recent years, steel door bodies are also required to be lighter and lower in cost, and it has been proposed to omit frame materials installed in the door bodies as much as possible. By the way, when configuring a door body with a small number of frame materials, how to secure the strength of the door body becomes a problem, and one means for securing the strength is a folded piece that is repeatedly folded around the four sides of the front and back plates. It is conceivable to form a part. Therefore, in the vertical direction of the door body, while frame material is interposed, it is repeatedly bent in the door width direction (finding direction) inside of the door end side of one face plate of the front and back plates and the door bottom side. Sandwiching grooves formed by repeatedly bending each of the insertion pieces formed by forming the inner face in the door width direction (finding direction) inside each end face on the door face side and door end side of the other face plate Are formed and the front and back plates are integrated in a retaining shape by pushing each insertion piece into the clamping groove.

JP 2010-1623 A

  In the door body of Patent Document 1, the frame material is omitted by repeatedly folding the front edge of the face plate for the door end side and the door bottom side of the door body, and the frame material is omitted. By interposing the frame material, the strength is ensured, thereby ensuring the strength of the door body at the four circumferences and the smoothness of the front and back door surfaces of the door body. Furthermore, in this thing, the door body uses a hinge that opens and closes relative to the door frame (housing side), and the load of the door body is via a hinge provided on the door bottom side portion of the door body. It is supported, and it responds by increasing the strength of the door bottom side of the door body. By the way, when the door body is supported with respect to the door frame using the pivot hinge, it is essential to provide a frame material for attaching the pivot hinge on the upper and lower sides of the door body. It acts on the frame material, particularly the lower frame material. However, when the thing of patent document 1 is verified from a drawing, the frame material provided in the upper and lower sides of a door body has composition which is supported only by the support by a core material, and the adhesive force with the door surface of the front and back. For this reason, in the case where a pivot hinge is provided on such a door body so that the load of the door body acts on the upper and lower frame materials, the frame material, particularly the frame material provided at the lower end, is loaded with the door body. In such a configuration, it is considered that the core body is submerged into the non-rigid core material. In such a configuration, the door body cannot be a pivot hinge type, and the present invention should be solved here. There are challenges.

The present invention has been created in view of the above-described circumstances in order to solve these problems, and the invention of claim 1 includes a pair of front and back first and second face plates made of a metal plate material. constitute the door body using, upon interior the upper and lower frame members to the inside of the upper and lower end surfaces of the door body, first, door leading end side of the second find piece constituting the first, the door surface of the second surface plate The first and second bent pieces are formed at the front edge of the door butt side, and the first and second bent pieces are used to form the door end side of the door body and the end faces of the door butt side. The door body is located on the inner side of each end face, and each inner piece on the door bottom side, while the door body makes the first and second finding pieces of the first and second face plates face each other, together we shall be constituted by fitted a second bent piece portion formed on the second surface plate to the first bending piece forming the first surface plate, door leading end side of the first bending piece, door The upper and lower end portions of the inner pieces of the side door end side for supporting the upper and lower frame members, respectively, to form a notch of the door trailing end side, the notch portion of該戸destination side, door leading side Formed on the doorside side first prospective piece portion that is located inside the end surface and constitutes the doorside side inner piece portion, the door butt side notch portion is located inside the door butt side end surface It is a door body characterized by being formed in a door butt side first flange piece part which constitutes an inner piece part on the door butt side .
In the invention of claim 2 , the first bent piece portion on the door tip side is a door tip side first folded piece portion turned back from the leading edge of the first finding piece portion toward the door bottom side, and the door tip side. The first folding piece portion on the door butt side is the tip of the first finding piece portion, whereas the first folding piece portion on the door bottom side is constituted by the door end side first prospecting piece portion that reaches the second finding piece portion from the leading edge of the first folded piece portion. Toshiri side first prospective piece part that reaches the second finding piece part from the edge, and Tojiri side that bends from the leading edge of the doorside side first prospective piece part to the door end side and contacts the second finding piece part The first abutment piece and the door butt side that is bent from the leading edge of the door butt side first contact piece part to the first finding piece part side and located on the door end side of the door butt side first prospective piece part a door member according to claim 1, wherein the benzalkonium is constituted by a first flange piece.
In invention of Claim 3 , the door edge side 1st contact piece part is further bent to the door edge side, and the door edge side 1st contact piece part which contact | abuts to a 2nd finding piece part, and the door The door end side first flange piece part bent from the front end edge of the front side first contact piece part to the first finding piece part side is formed, and the notch part on the door side is the door tip side The door end side first abutment piece portion and the door end side first folded piece portion that are part of the inner piece portion are respectively formed, and the notch portion on the door edge side is the door flange side first flange piece. The door body according to claim 2 , wherein the door body is also formed on a door bottom side first abutting piece portion that constitutes the door piece side inner piece portion together with the portion.

According to the first aspect of the present invention, the upper and lower frame members can be supported by the rigid inner piece, and a problem that the vertical displacement occurs even when a load is applied to the frame member can be avoided. Furthermore, the upper and lower frame members can be reliably supported by the first bent piece portion, and the assembling process can be performed with good workability.
By setting it as invention of Claim 2 , an upper and lower frame material can be supported by the inner piece part which faces the expected direction formed in a 1st bending piece part, and reliable support is realizable.
According to the invention of claim 3 , the upper and lower frame materials can be incorporated with high positional accuracy.

FIG. 1 (A) is a front view of the door body attached to the door frame, and FIGS. 1 (B), (C), (D), (E), and (F) are respectively a plan view and a left side view of the door body. It is a figure, a front view, a right side view, and a bottom view. It is XX sectional drawing in FIG. 1 (A). It is YY sectional drawing in FIG. 1 (A). 4A, 4B, 4C, and 4D are a plan view, a left side view, a front view, and a right side view of the first box body, respectively. FIGS. 5A, 5B, 5C, and 5D are a plan view, a left side view, a front view, and a right side view of the second box body, respectively. It is a top sectional view explaining the assembly procedure of the first and second box bodies. 7A, 7B, and 7C are a plan view and a front view of the upper frame member, respectively, a cross-sectional view taken along line XX in FIG. 7A, and FIGS. 7D, 7E, and 7F. FIG. 8 is a plan view, a front view, and a sectional view taken along line XX of FIG. FIGS. 8A and 8B are perspective views for explaining the support state of the upper frame material on the door end side and the door bottom side, respectively. 9A is a plan view illustrating the assembled state of the first face plate and the upper frame member, FIG. 9B is a plan view illustrating the assembled state of the first and second face plates and the upper frame member, FIG. C) is a plan view illustrating a state in which a pivot hinge is incorporated in the door body. 10A and 10B are a front view in which a part of the door body is cut away, and a sectional view taken along line XX in FIG. FIGS. 11A, 11B, and 11C are a cross-sectional plan view, a side view, and a front view, respectively, for explaining the state of attachment of the locking device liner.

Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
In the drawings, reference numeral 1 denotes a door frame provided around the doorway (opening) of a building, and the door frame 1 includes upper and lower, left and right (door tip side, door bottom side) frame members 2 and 3. 4, 5 are integrally formed in a rectangular shape. Each of these frame members 2, 3, 4, and 5 is formed by bending a metal plate material. In the fully closed posture of the door body 6 that is supported by the door frame 1 and according to the present invention, the door body 6 Door end pieces 2a, 3a, 4a, 5a facing the outdoor side in close proximity to the four sides of the indoor side surface 6e, and the end surfaces 6a, 6b, 6c on the upper and lower sides, the door tip side, and the door bottom side of the door body 6, Door body facing pieces 2b, 3b, 4b, and 5b that face 6d are formed.

The door body 6 is made of a metal plate material, preferably steel, and in this embodiment, a pair of indoor and outdoor (front and back pair) first and second face plates 7 and 8 made of steel plates, and these first and second plates. And a core material 9 interposed between the face plates 7 and 8 and, as will be described later, by appropriately folding and integrating the four circumferences of the first and second face plates 7 and 8 It is comprised in the door body 6 which abbreviate | omitted the frame material interposed in the door body 6 as much as possible.
And the door body 6 of this Embodiment is between the upper end part of the right side and the upper frame material 2 toward drawing of FIG. 1 (A) used as the door bottom side, and a lower end part and the door bottom side so that it may mention later. The upper and lower pivot hinges 10 and 11 are supported by the door frame 1 through a pair of upper and lower upper and lower pivot hinges 10 and 11 respectively provided between the upper and lower right frame members 5. The pivot shafts 10a and 11a arranged concentrically with each other are configured to open and close and swing on the outdoor side with a swing fulcrum.

The first and second face plates 7 and 8 constituting the door body 6 are first and second quadrangular shapes constituting indoor and outdoor finding faces (indoor side door face and outdoor side door face) 6e and 6f of the door body 6, respectively. It has been cut in advance into a shape having a second finding piece portion 7a, 8a and a surplus length portion extending vertically and horizontally from the four peripheral tip edges of the first and second finding piece portions 7a, 8a, The first and second box bodies 7B, which are in the form of nested boxes, are formed by forming the first and second bent pieces by bending the extra lengths extending in the respective directions. 8B is formed. The first and second box bodies 7B and 8B (first and second face plates 7 and 8) are provided with the first finding piece portion 7a of the first box body 7B serving as the indoor door surface 6e and the outdoor side. The second locating piece 8a of the second box body 8B to be the door surface 6f is opposed to the second fold piece of the second box body 8B with respect to the first fold piece of the first box body 7B. The door body 6 is formed by being externally fitted and integrated.
The first and second face plates 7 and 8 do not necessarily need to be used as an indoor side and a second face plate as an outdoor side face plate, and can be used as the opposite configuration. As long as the door body is formed by externally fitting the box body constituted by one face plate to the box body constituted by the other face plate, the front and back directions of the door body may be any direction. .

In the first face plate 7, as shown in FIG. 4, the door end side first is formed by bending an extra length portion formed at the front end edge (left end edge) of the first finding piece portion 7 a. A bent piece is formed. The door end side first bent piece portion is formed over the entire length of the first finding piece portion 7a in the vertical direction, and is bent in a folded shape from the leading edge of the first finding piece portion 7a toward the door bottom side. Bent toward the second finding piece portion 8a side (the second face plate 8 side, the outdoor side) from the front end side of the formed door tip side first folding piece portion 7b and the door tip side first folding piece portion 7b. And the doorside side first prospective piece portion 7c.
Here, the door-end-side first folded piece 7b is a door-end-side first folded piece so that the tip side portion (door-end side portion) contacts the outdoor side surface (inner side surface) of the first finding piece portion 7a. The portion 7b is folded in a state of pressing (crushing) the first finding piece portion 7a, but by forming a hairpin shape, the first finding piece portion 7a and the door end side first folded piece portion 7b The space portion S is formed without completely crushing the folded portion 7d exposed to the outside as the door end side end surface 6c of the door body 6. This prevents the whitening phenomenon that occurs when the folded portion of the face plate that has been subjected to surface processing such as a decorative steel plate is crushed, and the folded portion that is exposed to the outside as the door body door end side end surface 6c. The surface processing on the outer surface of 7d can be protected, and the design is improved.

As described above, the door end side first folded piece portion 7b is bent so that the leading edge side is pressed against the first finding piece portion 7a. And the door end side 1st prospective piece part 7c bent at the front-end edge of the door-end side 1st return piece part 7b is the front-end edge part of the door-end side 1st return piece part 7b, and a 1st finding piece part. 7a is bent at an angle of 90 degrees. As a result, the door end side first prospective piece portion 7c has a door bottom side (inward in the left-right direction) corresponding to the length of the door tip side first folded piece portion 7b with respect to the door tip side end surface 6c of the door body 6. It is comprised so that it may become a positional relationship which becomes parallel with respect to the door end side end surface 6c, and comprises the inner piece part by the side of the door of this invention. At this time, the door end side first prospective piece portion 7c is sized so that the leading edge abuts against the second finding piece portion 8a, but is pressed against the first finding piece portion 7a in a contact manner. By being bent at an angle of 90 degrees from the front edge of the door end side first folded piece 7b, it is configured so that the length dimension in the expected direction can be formed with high accuracy. .
Further, the door-end-side first bent piece portion formed in the extra length portion on the door-end side is bent from the tip edge of the door-end-side first prospective piece portion 7c toward the door-end side, A door-side first contact piece 7e that is in contact with the second finding piece 8a of the face plate 8 is formed, and at the leading edge of the door-side first contact piece 7e, the first finding piece 7a side ( A door end side first flange piece portion 7f that is bent toward the first face plate 7 side, the first folded piece portion 7b side, and the indoor side) is formed. And these door tip side 1st contact piece part 7e and door tip side first flange piece part 7f are located in the door bottom side rather than door end side end face 6c with the door tip side first prospective piece part 7c. And constitutes the inner piece on the door-end side of the present invention.

Moreover, the door bottom side 1st bending piece part is formed by bending the surplus length part formed in the front edge (right side edge) of the door bottom side of the 1st finding piece part 7a. The door bottom side first bent piece portion is formed over the entire length of the first finding piece portion 7a in the vertical direction, and is a door bent from the leading edge of the first finding piece portion 7a toward the door end side. The bottom end of the butt-side first folded piece 7g and the butt-end folded toward the second finding piece 8a side (the second face plate 8 side, the outdoor side) from the leading edge of the first fold side piece 7g The side first prospective piece portion 7h is provided. Here, the door edge side first folded piece 7g is bent at an acute angle with respect to the first finding piece 7a, so that the leading edge is the edge of the first finding piece 7a. The door bottom side first prospective piece portion 7h that is biased toward the door end side and sets the door thickness of the door bottom portion of the door body 6 together with the door bottom side first folded piece 7g is the first finding piece portion 7a. It is comprised so that it may deviate from the door butt side edge part to the door tip side. And the door butt side 1st return piece part 7g forms the projection part 7i which protrudes in the door butt side rather than the door butt side 1st prospective piece part 7h with the door butt side site | part of the 1st finding piece part 7a. It is configured.
Furthermore, the door butt side first bent piece part formed in the extra length part on the door butt side is bent from the front edge of the door butt side first prospective piece part 7h toward the door tip side, A door butt side first contact piece 7j that contacts the second locating piece 8a of the face plate 8 is formed, and the first locating piece 7a side ( A door bottom side first flange piece 7k that is bent toward the first face plate 7 side and the indoor side) is formed. At this time, the door butt side first flange piece 7k is set to face the door butt side (left and right direction inner side) with respect to the door butt side first prospective piece part 7h, and the door butt side first contact is made. piece portion 7j, the door trailing end side first flange piece 7k is located on door leading side than the door trailing end side end face 6d of the door body 6 (the left-right direction inner side), constituting the inner piece of the door trailing of the present invention doing.

  And the upper first lower bent piece part is formed by bending the extra length part formed at the upper and lower tip edges of the first finding piece part 7a. One part is formed in the site | part except the right-and-left both-ends edge of the 1st finding piece part 7a, and these, the lower 1st bending piece part is a 2nd finding piece from the front end edge of the 1st finding piece part 7a. In addition to being bent toward the portion 8a side (second face plate 8 side, outdoor side), the lower first prospective piece portions 7m and 7n are included.

Thus, the 1st box body which the outdoor side (the 2nd face plate 8 side) opens by bending the extra length part formed in the four periphery of the 1st face plate 7 and forming a 1st bending piece part. As shown in FIG. 6, the first box body 7B is formed on the leading edge of each first prospective piece portion 7c, 7h on the door tip side and the door bottom side, as shown in FIG. The first abutment pieces 7e, 7j on the bottom side are formed, and the first abutment pieces 7e, 7j are doors of the second finding piece 8a of the second face plate 8, respectively. It is comprised so that it may contact | abut to each edge part of the tip and the door butt in abutting form.
At this time, the first flange piece portions 7f and 7k on the door end side and the door bottom side are formed at the leading edges of the first contact piece portions 7e and 7j, respectively. As a result, the first abutting piece portions 7e and 7j are not deformed so as to wave in a curved shape, and are bent as a uniform flat plate with high smoothing accuracy. 7j whole area can be made to contact | abut to the 2nd finding piece part 8a reliably.

On the other hand, in the second face plate 8, as shown in FIG. 5, the second finding piece portion 8a has a lateral width (finding width) substantially the same as that of the first finding piece portion 7a and slightly more than the first finding piece portion 7a. The door end side second fold is formed by bending an extra length portion formed at the front end edge (left end edge) of the second end piece 8a. A curved piece is formed. The door end side second bent piece portion is formed over the entire length of the second finding piece portion 8a in the vertical direction, and the first finding piece portion 7a side (first face plate) from the tip edge of the second finding piece portion 8a. 7 side, the folded-back part 7d of the door-end side first folded piece 7b, from the front edge of the door-side second prospective piece 8b bent toward the indoor side) A door-side second contact piece 8c that is bent toward the door-butt side and contacts the door-tip-side first folded piece 7b of the first face plate 7 is formed. Further, the door end side second flange piece portion 8d bent toward the second finding piece portion 8a side (the second face plate 8 side, the outdoor side) at the front end edge of the door end side second contact piece portion 8c. Is formed.
At this time, the door-side second prospective piece 8b is a door of the door 6 together with the folded portion 7d of the door-side first folded piece 7b in the assembled state of the first and second box bodies 7B and 8B described later. The front side end face 6c is configured. Further, the door-end-side second contact piece 8c is formed to extend to a portion close to the door-end-side first prospective piece 7c, and the door-end-side second contact piece 8c and the door-end side The first abutting piece 7e is configured to face the door thickness direction (look-in direction). As a result, the door-side second flange piece 8d formed at the leading edge of the door-side second contact piece 8c is displaced in the door width direction with respect to the door-side first flange piece 7f. The door end side first flange piece portion 7f is formed closer to the door end side and close to the door end side first prospective piece portion 7c, and the door end side second flange piece portion 8d. The front end edge of the door and the front end edge of the door end side first flange piece 7f are configured to have a predetermined gap in the door thickness direction.

In addition, the door bottom side second bent piece part is formed by bending the extra length part formed at the front edge (right end edge) of the door bottom side of the second finding piece part 8a. The door bottom side second bent piece portion is formed over the entire length of the second finding piece portion 8a in the vertical direction, and the first finding piece portion 7a side (first face plate 7) from the leading edge of the second finding piece portion 8a. The door end side second prospective piece 8e bent toward the side, indoor side), and folded back so as to be in contact with the inner side surface (door side surface) of the door end second prospective piece 8e. And the door bottom side reinforcing piece 8f.
At this time, the length of the door bottom side second prospective piece 8e is set to a length slightly shorter than the door thickness of the door body 6, and the leading edge ( The indoor side end) is in contact with the inclined surface of the door edge side first folded piece 7g formed at the door edge side tip edge of the first finding piece part 7a, and the door body 6 together with the door edge side first folded piece 7g. Is set so as to constitute the door end side surface 6d.

Further, the upper second bent piece portion is formed by bending the extra length portions formed at the upper and lower tip edges of the second finding piece portion 8a, and the tip of the second finding piece portion 8a is formed. It is composed of a lower second prospective piece portion 8g, 8h that is bent from the edge toward the first finding piece portion 7a side (first face plate 7 side, indoor side). The second prospective pieces 8g and 8h are set so as to constitute the upper and lower end faces 6a and 6b of the door body 6 together with the upper and lower first prospective pieces 7m and 7n.
Thus, the 2nd box body which the indoor side (the 1st face plate 7 side) opens by bending the surplus length part formed in the four periphery of the 2nd face plate 8 and forming a 2nd bending piece part. 8B is formed.

Then, when the second box body 8B is externally fitted to the first box body 7B, the second box body 8B is, as described above, the length in the left-right direction (left-right width) of the second finding piece 8a. Is set to substantially the same length as that of the first finding piece portion 7a, while the vertical length is the length obtained by adding play to the first finding piece portion 7a and the thickness of the second face plate 8 for two sheets. Is set to Further, the first and second box bodies 7B and 8B have door-end-side portions, the door-end-side first and second contact piece portions 7e and 8c facing the door thickness direction, and the contact piece portions 7e, Door-end-side first and second flange pieces 7f and 8d are formed to extend from the front end edge of 8c toward each other.
For this reason, the first and second box bodies 7B and 8B are externally fitted to the first box body 7B such that the opening sides face each other in a state of facing each other in the orthogonal direction. Even if it tries to make it, the door-end side 1st contact piece part 7e and the door-end side 1st flange piece part 7f of the 1st box body 7B may become obstructive, and it cannot make it fit outside. Therefore, in the present embodiment, the first and second box bodies 7B and 8B are configured so as to be easily and easily assembled by the following procedure.

That is, as shown in FIG. 6, the first box body 7B is placed on the work table with the opening facing upward, and the opening of the second box body 8B is downward relative to the first box body 7B. The upper and lower second prospective pieces 8g and 8h on the second box body 8B are externally fitted on the first box body 7B and outside the lower first prospective piece parts 7m and 7n. And the second contact piece 8c of the second box body 8B is brought into contact with the second contact piece 8c in the vicinity of the folded portion 7d of the first turn piece 7b of the first box body 7B. It is set as the inclination attitude | position which the door bottom side part of the box body 8B is located upwards. From this state, the door bottom side portion of the second box body 8B is swung downward with the abutting portion between the door tip side first folded piece 7b and the door tip side second contact piece 8c as a fulcrum. At this time, the door edge side first and second flange piece portions 7f and 8d are such that the leading edge of the door tip side second flange piece portion 8d and the leading edge of the door tip side first flange piece portion 7f are in the door thickness direction. The dimension is set to a length having a predetermined gap, and there is no problem that the door-end-side second flange piece portion 8d abuts against the door-end-side first flange piece portion 7f.
And the indoor side end part (folding part of the door bottom side second reinforcement piece part 8f) of the door bottom side second prospective piece part 8e of the second box body 8B is the door bottom side first contact of the first box body 7B. In the state of bumping against the surface 7j, the entire second box body 8B is displaced upward while slightly floating upward, and the door end side second flange piece 8d of the second box body 8B is moved to the first box body. The door end side second prospective piece portion 8e reinforced by the door bottom side second reinforcement piece portion 8f of the second box body 8B is brought close to the door end side first prospective piece portion 7c of the 7B, and the first box body 7B. It is set as the state made to position so that it may fit along the outer surface of the 1st prospective piece part 7h. In this state, by releasing the support to the second box body 8B (releasing the hand), the second box body 8B is displaced downward by its own weight, so that each second prospective piece 8b, 8e, 8g, 8h The door body 6 is formed by completing the external fitting of the second box body 8B that fits into the first prospective piece portions 7c, 7h, 7m, and 7n into the first box body 7B. .

  In the assembled state of the first and second box bodies 7B and 8B, the first abutting piece portions 7e and 7j on the door end side and the door bottom side of the first box body 7B are the second finding of the second box body 8B. The first abutment piece portions 7e and 7j form the first flange piece portions 7f and 7k, respectively, as described above. Is formed with good smoothness and is configured to be in contact with the second finding piece portion 8a in a uniform state, so that each of the first contact piece portions 7e and 7j is like a frame material. It functions to reinforce the door end side and door end side of the door body 6, and is configured so that the frame material of each part on the door end side and door end side can be omitted.

  Moreover, in the door tip side site | part of the door body 6, while the door tip side 2nd prospective piece part 8b collides with the folding | returning part 7d, the door tip side 2nd flange piece part 8d is the door tip side 1st prospective piece part 7c. A hollow portion H is formed on the door tip side of the door body 6 so as to be surrounded by the first and second prospective piece portions 7c and 8b facing the door width direction. ing. As a result, the door end side first prospective piece portion 7c, the door tip side first portion, the second contact piece portions 7e and 8c, and the door end side first folded piece portion 7b constituting the hollow portion H are made of the frame material. Thus, the reinforcement at the door end side portion of the door body 6 is made.

  Further, at the door end side portion of the door body 6, the door end side first and second contact piece portions 7 e and 8 c are formed facing the door thickness direction. The door end side first and second flange piece portions 7f and 8d formed at the leading edge of the contact piece portions 7e and 8c are the door tip side second flange piece portion 8d than the door tip side first flange piece portion 7f. Is also located on the door bottom side and is displaced in the door width direction. As a result, when the first and second box bodies 7B, 8B are displaced in a direction away from each other in the event of a fire or the like, the door side first and second flange pieces 7f, 8d are locked together, The first and second box bodies 7B and 8B can be held in a connected state, and can be prevented from being broken.

Moreover, in the door butt side site | part of the door body 6, it is comprised so that the indoor side edge part of the door butt side 2nd prospective piece part 8e may contact | abut the inclined surface of the door butt side 1st folding | turning piece 7g. Thereby, when the door bottom side part of the door body 6 is viewed from the indoor side, the indoor side edge of the door bottom side second prospective piece 8e of the second box body 8B fitted from the outdoor side is the door. It is comprised so that it may be blindfolded by the projection part 7i comprised by the bottom side 1st folding | turning piece part 7g and the 1st finding piece part 7a. And the door body 6 of this Embodiment is an outward opening, Comprising: In the door bottom side site | part visually recognized from the indoor side, the projection part 7i covers the indoor side edge part of the door bottom side 2nd prospective piece part 8e. Therefore, it is comprised so that it may become the door body 6 excellent in the designability.
Furthermore, the indoor side edge part of the door bottom side second prospective piece part 8e is configured to abut against any part of the inclined surface of the door bottom side first folded piece part 7g. It is configured to absorb errors.

  Moreover, in the assembled state of the first and second box bodies 7B and 8B, the door-end-side second flange piece portion 8d of the second box body 8B is replaced with the door-end-side first prospective piece portion 7c of the first box body 7B. The door bottom side, upper and lower prospective pieces 8e, 8g and 8h of the second box body 8B are close to each other, and the door bottom side, upper and lower prospective pieces 7h and 7m of the first box body 7B , 7n in sliding contact (contact). As a result, the second box body 8B that is externally fitted to the first box body 7B does not rattle in the vertical direction and the door width direction with respect to the first box body 7B, and the first and second box bodies 7B, 8B are Without being separately provided with the positioning means, it is configured to be incorporated in a state in which the positioning is automatically performed by external fitting.

As described above, when the door body 6 is configured by incorporating the first and second box bodies 7B and 8B, the first and second on the door-end side and the door-end side of the door-end side and the door-end side. Strength is ensured by the bent piece portion, so that no frame material is required, and a pair of upper and lower upper and lower frame materials 12 and 13 are provided on the upper and lower sides to ensure strength. In the present embodiment, the door body 6 is a pivot hinge type, and the upper and lower pivot hinges 10 and 11 are attached to the upper and lower frame members 12 and 13.
In addition to these, the lower frame members 12 and 13 are configured so as to be incorporated into the upper and lower ends of the first box body 7B, respectively, before the first and second box bodies 7B and 8B are externally fitted and assembled. Yes. In this embodiment, upper and lower pivot hinge liners 10b and 11b for fixing the upper and lower pivot hinges 10 and 11 are fixed in advance to the upper and lower frame members 12 and 13, respectively. As a state, it is configured to be incorporated in the first box body 7B.
The upper and lower pivot hinge liners 10b and 11b are preliminarily incorporated in the upper and lower ends of the door end side and the door bottom side first bent piece of the first box body 7B. A space for assembling the materials 12 and 13 into the interior shape is formed, and notches for supporting the upper and lower frame materials 12 and 13 with the upper and lower pivot hinge liners 10b and 11b are formed, respectively. Has been.
Incidentally, in the case where the door body is not configured as a pivot hinge type, the pivot hinge liner is not fixed to the frame material, and each of the door end side and the door bottom side first bent piece portion of the first box body 7B. What is necessary is just to form the notch part for assembling an upper and lower frame material in an up-and-down both ends.

  The door end side portion of the first box body 7B is a door bottom side portion (tip edge) of the door tip side first folded piece portion 7b as an inner piece portion on the door tip side formed in the first bent piece portion. Part), the door tip side first prospective piece portion 7c, and the door tip side first contact piece portion 7e, respectively, are cut away so that the upper and lower door tip side first cut portions CF1 are respectively formed. Notches are formed. At this time, only the site | part which opposes the door tip side 1st contact piece part 7e is notched about the door tip side 1st folding piece part 7b, and the door bottom side of the door tip side 1st folding piece part 7b is used. The facing notch end surface 7p and the door bottom side surface 7q of the door end side first flange piece 7f are set to be flush with each other in the door thickness direction. In addition, the upper and lower frame materials between the upper and lower first prospective piece portions 7m and 7n are the notch depths that are the lengths in the vertical direction of the upper and lower door-end-side first notches CF1, respectively. 12 and 13 are set such that each of them can be incorporated, and the upper door-end-side first notch portion CF1 is shorter than the lower door-end-side first notch portion CF1. Is set to

  Further, the door bottom side portion of the first box body 7B includes a door bottom side first contact piece 7j as a door bottom side inner piece formed in the first bent piece, and a door bottom side first portion. By cutting out the upper and lower ends of the one flange piece portion 7k, the door bottom side cutout portion CB is formed as a cutout. At this time, the door butt side first contact piece 7j is cut out including a bent portion with the tip edge of the door butt side first prospective piece 7h. Furthermore, the upper and lower pivot hinge liners have upper and lower first notch pieces 7m and 7n between the upper and lower first notch pieces 7m and 7n, respectively. 10b and 11b are attached, and the length is set so that the lower frame members 12 and 13 can be assembled. The upper door bottom side cutout portion CB is the lower door bottom side cutout. It is set to be shorter than the part CB.

Further, on the first box body 7B, the lower first prospective piece portions 7m and 7n are formed with a first notch window CW1 facing the upper and lower pivot hinges 10 and 11 mounting portions. In addition, a second cutout window is provided on the upper and lower second prospective pieces 8g and 8h on the second box body 8B so as to face the upper and lower pivot hinges 10 and 11 mounting portions. CW2 is formed. The upper and lower second cutout windows CW2 of the second box body 8B are cut out including the upper and lower ends of the second finding piece 8a.
Here, the upper and lower pivot hinges 10 and 11 are connected to pivot shafts 10a and 11a that connect the door frame 1 and the door body 6 on the outdoor side of the door body 6, and upper and lower pivot hinge liners 10b and 11b, respectively. The door-side interior members 10c and 11c to be fixed, and the pivot-side coupling members 10d and 11d that project from the door-side interior members 10c and 11c toward the outdoor side and are connected to the pivot shafts 10a and 11a. Has been.
Then, as described later, the upper and lower door-side interior members 10c and 11c are fixed to the upper and lower pivot hinge liners 10b and 11b in a state where the first and second box bodies 7B and 8B are integrated with each other. In some cases, the pivot shaft connecting members 10d and 11d are arranged so as to protrude outwardly through the upper and lower second cutout windows CW2.

On the other hand, as shown in FIG. 7, the upper and lower frame members 12 and 13 respectively have bottom pieces 12a and 13a and houses extending upward and downward from the indoor outer edges of the bottom pieces 12a and 13a, respectively. A pair of inner and outer side pieces 12b, 12c, 13b, and 13c form a steel C-shaped channel that opens upward and downward. Further, the upper and lower frame members 12 and 13 are fixed to extend to the outdoor side from the upper and lower edge edges of the indoor side pieces 12b and 13b at portions other than the door bottom side portion to which the pivot hinges 10 and 11 are attached. The pieces 12d and 13d are formed, respectively, while the door-side end portions are notched in the outdoor pieces 12c and 13c to form openings 12e and 13e.
In addition to these, in the lower frame members 12 and 13, the length dimension in the left-right direction is set to the facing distance between the door-end side flange piece portion 7f and the door-bottom side first prospective piece portion 7h of the first box body 7B. The length dimension in the indoor / outdoor direction is set to an interval between the first and second finding pieces 7a and 8a. Further, as described above, the vertical dimension of the upper and lower frame members 12 and 13 is between the upper and lower first prospective piece portions 7m and 7n and the door end side first notch portion CF. The lower frame material 13 is set to have a slightly longer length than the upper frame material 12.

8 and 9A, the upper frame member 12 configured as described above is in a state where the upper pivot hinge liner 10b is screwed to the lower end surface of the bottom piece 12a door bottom side portion. Although it is assembled in the upper end part of the box body 7B, the door end side part of the upper frame member 12 is the notch end face facing upward in the door end side first notch part CF1 at this time. The upper end surface 7r of the door butt side portion of the piece 7b, the upper end surface 7s of the door tip side first prospective piece portion 7c, and the upper end surface 7t of the door tip side first contact piece 7e so as to be mounted. It is configured. On the other hand, the door bottom side portion of the upper frame member 12 is a door flange side first flange piece portion in which the pivot hinge liner 10b integrated with the lower end surface is a notch end surface facing upward in the door bottom side cut portion CB. It is comprised so that it may incorporate in the state mounted in the upper end surface 7w of 7k .

In this assembled state, the indoor side piece 12b of the upper frame member 12 hits the outdoor side surface (surface on the second face plate side) of the first finding piece portion 7a, and the fixed piece 12d hits the upper first prospective piece portion 7m. It is comprised so that it may incorporate in the state which touches. Further, the outdoor side piece 12c of the upper frame member 12 is configured to be flush with the outdoor side surface (surface on the second face plate 2 side) of the door tip side, door bottom side first contact piece portions 7e, 7j. Has been. Furthermore, the door end side end surface 12f of the upper frame member 12 is connected to the door end side end surface 7p of the door end side first folded piece portion 7b in the door end side first notch portion CF1 and the door end side first flange piece portion 7f. The door butt side end surface 12g of the upper frame member 12 is configured to contact the door end side end surface 7x of the door butt side first prospective piece portion 7h. trailing end face 7p, 7q, and functions as a stopper piece door tip side end surface 7x, be incorporated upper frame member 12 on top of the first box body 7B in the state where the positioning is made in the door width direction (lateral direction) It is configured to be able to. Thus, the upper frame member 12 is configured to be incorporated into the first box body 7B in a state in which the positional deviation in the vertical direction and the positional deviation in the door width direction are prevented.
The lower frame member 13 is incorporated in the lower portion of the first box body 7B with the lower pivot hinge liner 11b screwed to the upper end surface of the bottom piece 13a door bottom side portion. In the relationship in which the direction is reversed, it is assembled in the same assembling procedure as the upper frame member 12 and is in the same assembling state, and detailed description thereof is omitted.

Furthermore, the first box body 7B includes a locking device liner 15 for mounting the locking device 14, a door closer liner 16 for mounting a door closer device (not shown), a liner for mounting components necessary for the door body 6 and the like. Is fixed in advance by an integration means such as adhesion. Further, through holes are provided in advance in the respective component mounting locations of the first and second face plates 7 and 8 as necessary.
As shown in FIG. 11, the locking device liner 15 is formed in a U shape in a plan view by a pair of indoor and outdoor face plates 15 a and a door-end side connecting body 15 b that connects the door-end side portions of the face plates 15 a. ing. The door butt side portions of the indoor and outdoor face plates 15a are integrated by a plurality of connecting bodies 15c, and an opening 15d is formed in the door end side connecting body 15b, and a locking device is supported by the opening 15d. A pair of upper and lower mounting pieces 15e is formed for this purpose. And the locking device liner 15 has openings 7y, 8k formed in the door end side first and second prospective piece portions 7c, 8b, and attachment pieces 15e provided in the opening 15d of the door end side connecting body 15b. Further, it is fixed to the first finding piece portion 7a as being exposed to the outside through a notch 8m formed in the door-end-side second flange piece portion 8d. Thus, since the locking device liner 15 is configured to be directly fixed to the first finding piece portion 7a, it is easy to align the mounting piece 15e with the openings 7y, 8k and notches 8m of the face plates 7, 8. The positioning of the opening formed in the surface material of the door body and the mounting piece of the locking device liner is difficult, like a conventional locking device liner fixed inside the door body through a frame material. It is configured so that there are no defects.
In the present embodiment, the door closer liner 16 is fixed in advance to the upper portion of the first bottom piece 7a of the first box body 7B.

  As described above, the upper and lower pivot hinge liners 10b and 11b are provided, the lower frame members 12 and 13 and the necessary liners 15 and 16 are incorporated, and the first box body 7B A core material 9 is provided on the inner surface of the first finding piece 7a applied with a hot melt type adhesive. On the other hand, a hot melt type adhesive is applied to the inner surface of the second finding piece 8a of the second box body 8B. Subsequently, the first and second box bodies 7B, 8B are externally fitted and assembled based on the above-described procedure to adjust the outer shape of the door body 6, and the externally fitted and incorporated door body 6 is used as a hot press device. Assembling and heating and pressurizing both sides of the door body 6 in the front and back direction. As a result, the door body 6 is bonded to the members (the core material 9, the door end side, the door bottom side first contact piece portions 7e, 7j) where the first and second finding piece portions 7a, 8a face each other. In addition to being in an integrated state, the outdoor side pieces 12c, 13c of the upper and lower frame members 12, 13 are in contact with the second finding piece portion 8a of the second box body 8B, The upper and lower frame members 12, 13 are configured to be supported in a sandwiched manner by the first and second finding pieces 7a, 8a. As a result, the upper and lower frame members 12 and 13 are positioned on the upper and lower ends of the door body 6 in a state in which the positional deviation in the vertical direction, the positional deviation in the door width direction, and the positional deviation in the indoor / outdoor direction are prevented. It is configured to be incorporated.

By the way, the door end side 2nd contact piece part 8c is formed in the door end side 2nd bending piece part of the 2nd box body 8B of this Embodiment so that it may adjoin to the door point side 1st prospective piece part 7c. A door-end-side second flange piece portion 8d that is close to the first prospective piece portion 7c is formed at the tip edge of the door-end-side second contact piece portion 8c. For this reason, when the second box body 8B is externally assembled into the first box body 7B, the door bottom side portion of the door tip side second contact piece portion 8c and the upper and lower portions of the door tip side second flange piece portion 8d are It interferes with the door end side parts of the upper and lower frame members 12 and 13. Therefore, the door end side second portion of the first box body 7B is preliminarily formed in the door bottom side portion of the door tip side second contact piece portion 8c of the second box body 8B and the upper and lower portions of the door tip side second flange piece portion 8d. The door end side second notch portion CF2 is formed corresponding to the notch portion CF1, and the door bottom side portion of the door tip side second contact piece portion 8c and the door tip side second flange piece portion 8d The upper end surface of is cut out. And on the doorside second contact piece 8c, the lower end surface 8n, the doorside side second flange piece 8d, and the lower end surface 8p in the doorside second notch CF2 are the door side. Together with the upper and lower end surfaces 7r, 7s and 7t of the first notch portion CF1, the door end side portions of the upper and lower frame members 12 and 13 are supported, and the door end side of the door end side second contact piece portion 8c. The door notch side end surface 8q in the second notch portion CF2 is the upper and lower door bottom side surfaces 7p and 7q in the door tip side first notch portion CF1, and the door frame side end surfaces 12f and 13f of the lower frame members 12 and 13 are upper. The upper and lower frame members 12 and 13 are positioned so that the upper and lower frame members 12 and 13 can be further firmly supported, and reliable positioning is achieved. It is configured to be able to.
Furthermore, the door body 6 is an upper and lower integrated part of the first and second box bodies 7B and 8B, and the upper first and second prospective piece portions 7m and 8g and the fixed piece 12d of the upper frame member 12 are provided. The lower first and second prospective piece portions 7n and 8h and the fixing pieces 13d of the lower frame member 13 are fixed by rivets 17 at a plurality of positions in the door width direction, whereby the door body 6 is integrated. The upper and lower frame members 12 and 13 are configured to be firmly supported by the upper and lower ends of the door body 6.

In the integrated state of the first and second box bodies 7B and 8B (door body 6), the first and second box bodies 7B and 8B are formed on the upper and lower end surfaces 6a and 6b of the door body 6. The bottom pieces 12a and 13a of the upper and lower frame members 12 and 13 can be exposed from the outside through the second cutout windows CW1 and CW2, and the portion facing the outdoor side of the second cutout window CW2 In addition, the openings 12e and 13e of the upper and lower frame members 12 and 13 communicate with each other. The door-side interior members 10c and 11c of the upper and lower pivot hinges 10 and 11 are screwed to the door-side interior members 10c and 11c from the first and second cutout windows CW1 and CW2. The pivot shaft connecting members 10d and 11d are configured to protrude to the outdoor side through the openings 12e and 13e of the upper and lower frame members 12 and 13 and the second cutout window CW2 of the second box body 8B. Yes.

  In the present embodiment configured as described, the door body 6 is configured using the first and second face plates 7 and 8 and the core material 9 interposed between the first and second face plates 7 and 8. A first extending in the door thickness direction on each of the front edge and the door edge side of the first and second finding pieces 7a and 8a, which are the door surfaces of the first and second face plates 7 and 8, respectively. The second bent piece portion is bent and the frame material on the door end side and the door bottom side can be omitted. Further, in this, the first and second bent piece portions form the door piece side and door butt side end surfaces 6c and 6d on the door tip side and the door butt side, respectively. At the upper and lower ends of these inner pieces, a door-end-side first notch CF1 and a door-end-side first notch CB are formed, respectively. As a configuration in which the upper and lower frame members 12 and 13 are respectively supported by the side first notch portion CB, the frame members 12 and 13 are provided on the upper and lower sides of the door body 6 to ensure the strength of the portions. As a result, the strength of the door body 6 on all four sides can be secured, and the first and second finding pieces 7a and 8a (indoor / outdoor door surfaces) of the door body 6 can be prevented from being bent and distorted to ensure excellent smoothness. it can. Furthermore, the upper and lower frame members 12 and 13 are supported by the inner piece of rigidity (metal plate member), so that the vertical displacement of the upper and lower frame members 12 and 13 can be prevented. As a result, when the upper and lower pivot hinges 10 and 11 are provided on the upper and lower frame members 12 and 13 of the door body 6 so that the door body 6 can be freely opened and closed at the housing opening, Even if a load from the door body 6 side acts on the lower frame members 12 and 13 via the upper and lower pivot hinges 10 and 11, the upper and lower frame members 12 and 13, particularly the lower frame member 13 Can be avoided from sinking into the core material 9 due to the load of the door body 6.

  As described above, in the case where the present invention is implemented, the door tip side of the door body 6, the door tip side formed on the inside of the end surfaces 6 c and 6 d on the door bottom side, and the inner pieces on the door bottom side are formed. The upper and lower frame members 12 and 13 are supported by the portion, and the door body 6 is secured to have a structure that can be opened and closed by the upper and lower pivot hinges 10 and 11, but in this case, the door The body 6 is formed by externally fitting the second bent piece portion of the second box body 8B (second face plate 8) to the first bent piece portion of the first box body 7B (first face plate 7). Since it was set as the structure, the inner piece part located inside each end surface 6c, 6d of the door tip side and door bottom side of the door body 6 can be formed in the first box body 7B, and the upper and lower frame materials are preliminarily formed. 12 and 13 can be supported by the first box body 7B, and the assembly process of the door body 6 is performed with good workability. There is an advantage that kill.

  Further, in this case, the upper and lower frame members 12 and 13 are supported by the first bent piece portions on the door end side and the door bottom side formed in the first box body 7B, and in the vertical direction. However, at this time, the first bent piece portion on the door tip side is folded back from the leading edge of the first finding piece portion 7a toward the door butt side. On the other hand, it is constituted by the front-side first folded piece 7b and the door-side first prospective piece 7c that reaches the second finding piece 8a from the leading edge of the door-side first folded piece 7b. The first bent piece part is a door edge side first expected piece part 7h reaching the second found piece part 8a from the tip edge of the first found piece part 7a, and the tip edge of the door edge side first expected piece part 7h. From the front edge of the door bottom side first contact piece portion 7j and the first edge of the door bottom side first contact piece portion 7j. The upper and lower door end side first notch portions are formed by a door bottom side first flange piece portion 7k that is bent toward the piece portion 7a side and is located on the door end side of the door end side first prospective piece portion 7h. CF1 is formed in the doorside side first prospective piece part 7c which becomes an inner piece part on the doorside side, and the door edge side first notch part CB is the door edge side first part which becomes an inner piece part on the door edge side. It is formed on the flange piece 7k. As a result, the upper and lower frame members 12, 13 can be supported by the pieces 7c, 7k extending in the door thickness direction, and the upper and lower frame members 12, 13 are reliably supported. It is possible to reliably prevent vertical displacement.

  Further, in this case, the door-side first contact piece 7e that is bent to the door-edge side at the tip edge of the door-side first prospective piece 7c and contacts the second finding piece 8a; A door-end-side first flange piece 7f that is bent from the leading edge of the door-end-side first contact piece 7e to the first finding piece 7a side is formed, and the frame material on the door-end side is omitted. However, the door end side first notch portion CF1 is the door end side first door which becomes the door end side inner piece portion together with the door tip side first prospective piece portion 7c. The contact piece 7e and a part of the door end side first folded piece 7b are cut out. Furthermore, the door bottom side first notch portion CB is cut out together with the door bottom side first flange piece portion 7k and the door bottom side first contact piece portion 7j which is an inner piece portion on the door bottom side. As a result, the upper and lower frame members 12 and 13 can be assembled in a sandwiched manner between the first and second finding pieces 7a and 8a, and the door ends of the upper and lower frame members 12 and 13, Each end face 12f, 12g, 13f, 13g on the door butt side can be assembled in a state of contacting the door tip side first flange piece portion 7f and the door butt side first prospective piece portion 7h. Each piece 7f, 7h functions as a positioning member in the left-right direction, and the upper and lower frame members 12, 13 can be incorporated into the first box body 7B with high positional accuracy.

  Of course, the present invention is not limited to the above-described embodiment, and the first and second bent piece portions are provided at the front and rear end edges of the pair of front and back face plates constituting the door body. The first and second folded piece portions form the door end side and door end side end surfaces of the door body, and the door end side and door end side inner piece portions located inside each end surface. The shape of the bent piece portion and the shape of the cutout portion may be any shape as long as the cutout portions are formed and the cutout portions that support the frame material are formed on the inner piece portions. Moreover, as long as the door body has a structure in which frame materials are housed in the upper and lower ends, the support structure for the housing can be implemented in any support structure such as a hinge type or a pivot type.

  The present invention provides a door body provided at the entrance / exit of a building such as an office building or factory, while omitting the left and right frame materials, and can firmly support the frame materials up and down. This can be used when a highly versatile door body such as a formula or a pivot hinge type is configured.

DESCRIPTION OF SYMBOLS 1 Door frame 6 Door body 6c Door tip side end surface 7 First face plate 7a First finding piece part 7b Door tip side first folding piece part 7c Door tip side first prospective piece part 7e Door tip side first contact piece part 7f Door side first flange piece 7B First box body 8 Second face plate 8a Second finding piece 8b Door side second prospective piece 8c Door side second contact piece 8d Door side second flange piece Part 8B Second box body 9 Core material 10 Upper pivot hinge 10a Pivot shaft 10b Upper pivot hinge liner 12 Upper frame material CF1 Door tip side first notch part CB Door bottom side notch part

Claims (3)

Front and rear pair of first consisting of a metal plate material, when using the second side plate constitutes a door body, which interior the upper and lower frame members to the inside of the upper and lower end surfaces of the door body, first, the door surface of the second surface plate The first and second bent pieces are formed by bending the first and second bent pieces at the front end side and the bottom edge of the door bottom side. The door body forms each end face on the door tip side, the door bottom side, and the door tip side located on the inside of each end face, and each inner piece on the door bottom side . The first and second finding pieces of the face plate are opposed to each other, and the second bent piece formed on the second face plate is externally fitted to the first bent piece formed on the first face plate. In addition, on the top and bottom ends of each inner piece on the door end side and door bottom side of the first bent piece portion, a door tip side and a door bottom side notch portion for supporting the upper and lower frame materials respectively. formed,該戸The notch on the side is formed on the door end side first prospective piece portion that is located inside the door end side end surface and constitutes the door piece side inner piece, and the door notch side notch portion is A door body characterized in that the door body is formed on a door butt side first flange piece portion that is located inside the butt side end surface and constitutes a door butt side inner piece portion . The first folding piece portion on the door end side is the door tip side first folding piece portion that is folded back from the leading edge of the first finding piece portion toward the door bottom side, and the tip of the door tip side first folding piece portion. The first folding piece portion on the door bottom side is formed from the leading edge of the first finding piece portion, while the second folding piece portion is constituted by the door end side first prospective piece portion that reaches the second finding piece portion from the edge. The door end side first prospective piece part reaching the door edge side first prospective piece part, the door edge side first contact piece part bent from the leading edge of the door edge side first prospective piece part to the door tip side and abutting on the second finding piece part; The first edge piece of the door edge side is bent from the leading edge of the first contact piece side to the first finding piece part side and the door edge side first flange piece part located on the door end side of the door edge side first prospective piece part door body according to claim 1 configured characterized and Turkey. At the leading edge of the door end side first prospective piece portion, the door end side first contact piece portion that is further bent toward the door tip side and comes into contact with the second finding piece portion, and the door tip side first contact piece The door end side first flange piece part bent from the front end edge of the part to the first finding piece part side is formed, and the notch part on the door point side constitutes the inner piece part on the door tip side. The door end side first abutting piece part and a part of the door end side first folded piece part are respectively formed, and the notch part on the door bottom side is inside the door bottom side together with the door bottom side first flange piece part. The door body according to claim 2 , wherein the door body is also formed on a door bottom side first abutting piece portion constituting the piece portion.

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