JP6355413B2 - Door frame - Google Patents

Description

  The present invention relates to a door frame.

  A door that opens and closes an opening of a building is roughly configured to include a door frame attached to the periphery of the opening and a flat door body attached to the door frame so as to be openable and closable. Yes. Among these, the door body is configured by attaching a surface material to the surface of the door frame. The door frame is formed so that the front shape is a rectangular ring as a whole by combining a pair of left and right vertical frame members and a pair of upper and lower horizontal frame members.

  Conventionally, the vertical frame material and the horizontal frame material which constitute the door frame in this way are fixed to each other by welding in a state of being abutted with each other (for example, in the upper right column on page 2 of Patent Document 1, (It is disclosed that both vertical frames and upper and lower frames constituting the inner frame of the flash door are assembled into a frame shape by electric welding).

JP 61-254784 A

  However, in the above-described conventional technology, the vertical frame material and the horizontal frame material constituting the door frame are fixed to each other by welding in a state of being abutted with each other. It was necessary to temporarily hold them in a state where they were abutted with each other, and it was necessary to weld these vertical frame members and horizontal frame members to each other. there were.

  The present invention is to solve the above-described problems in the prior art, and an object of the present invention is to provide a door frame that can reduce the labor and cost of manufacturing the door frame.

In order to solve the above-described problems and achieve the object, the door frame according to claim 1 is a door frame constituting a door provided in an opening of a building, and a front shape by combining a plurality of frame members. Of the plurality of frame members, the horizontal frame member is formed from a central piece and a pair of side pieces orthogonal to the central piece. The cross-sectional shape by the cross section orthogonal to the longitudinal direction of the frame material is formed to be U-shaped, and the horizontal frame material is formed such that the central piece of the horizontal frame material is more than the pair of side pieces of the horizontal frame material It arrange | positions so that it may be located in the outer side of the said door frame, The vertical frame material orthogonal to the said horizontal frame material among the said some frame materials from a pair of side pieces orthogonal to a center piece and the said center piece The cross-sectional shape by the cross section orthogonal to the longitudinal direction of the vertical frame member is a U-shape. And forming the vertical frame member so that the central piece of the vertical frame member is located inside the door frame with respect to the pair of side pieces of the vertical frame member, Of the vertical frame members, only one recess is formed at the end of one frame member that opens outward in the longitudinal direction of the one frame member, and one protrusion is formed at the end of the other frame member. Only the concave portions and the convex portions were fitted to each other.

  Moreover, the door frame of Claim 2 is provided with the surface material attached to the said door frame so that the surface of the said door frame may be covered in the door frame of Claim 1, The said surface material WHEREIN: At least a part of the plurality of frame members is prevented from falling off toward the outside of the door frame, and at least a part of the plurality of frame members is attached to the door frame by fitting the convex portions and the concave portions. Prevent falling out inward.

Further, the door frame according to claim 3 is the door frame according to claim 1 or 2, wherein at least one of the horizontal frame member and the vertical frame member includes the concave portion and the convex portion. Release prevention means for preventing the fitting from being released is provided.

  Moreover, the door frame of Claim 4 is a door frame as described in any one of Claim 1 to 3. WHEREIN: Each of these two frame material is a pair orthogonal to a center piece and the said center piece. From the side piece, the cross-sectional shape by a cross section orthogonal to the longitudinal direction of the frame material is formed to be U-shaped, and the concave portion is formed by cutting out the central piece of the one frame material, The convex portion is formed by cutting out the pair of side pieces of the other frame member.

Moreover, the door frame of Claim 5 is a door frame which comprises the door provided in the opening part of a building, is a door frame which comprises the said door hung from the said center , and several frames It is a door frame formed so that the front shape becomes a rectangular ring by combining materials, and among the plurality of frame materials, of at least two frame materials orthogonal to each other, the end of one frame material The part is formed with only one concave part that opens to the outside in the longitudinal direction of the one frame member, and only one convex part is formed at the end part of the other frame member. The two frame members are a vertical frame member disposed on the door bottom side of the door and a horizontal frame member orthogonal to the vertical frame member, and the concave portion and the convex portion are fitted to each other. In the combined state, the horizontal frame member side end surface of the vertical frame member is more than the horizontal frame member side end surface. By positioning the outer horizontal surface of the material closer to the inner side of the door frame, an accommodation space portion for accommodating at least a part of the central suspension means for suspending the door centrally from the building was formed. .

According to the door frame according to claim 1, it makes the horizontal frame members and the vertical frame member can be fixed to each other by fitting structure between the concave and convex portions, these horizontal frame members and vertical frame members prior This eliminates the need to temporarily hold them in a state where they are in contact with each other and the need to weld these horizontal and vertical frame materials to each other as in the past. Can be reduced. Further, the horizontal frame members and vertical frame members in the structure to match each other as in the prior art, easily positional shift between each other of these transverse frame member and the vertical frame member occurs, possibly producing errors of the door frame is increased there was however, by fixing to each other by fitting structure of these horizontal frame members and vertical frame members of the concave portion and the convex portion, it is possible to reduce positional deviation between each other these horizontal frame members and vertical frame members Thus, the manufacturing error of the door frame can be reduced. In addition, since only one recess and one protrusion need be formed, compared to the case of employing a complicated fitting structure in which a plurality of recesses or protrusions are formed, labor and cost in manufacturing the door frame are reduced. Can be further reduced. Furthermore, since there is no need to weld the horizontal frame material and the vertical frame material to each other as in the prior art, even a material that is difficult to weld can be applied as a constituent material of the door frame. It becomes possible to improve the freedom of selection of the constituent material of the frame.

  According to the door frame of claim 2, the surface material prevents at least a part of the plurality of frame members from falling off toward the outside of the door frame, and the fitting structure of the convex portion and the concave portion is used. Since it prevents at least a part of the plurality of frame members from falling off toward the inside of the door frame, the outer surface is prevented from falling off by the surface material, and the inside is dropped by fitting the convex portion and the concave portion. By combining with the prevention effect, it is possible to configure a stable door frame in which at least a part of the plurality of frame members does not fall off both the outside and the inside.

According to the door frame of claim 3, at least one of the horizontal frame member and the vertical frame member has a release preventing means for preventing the fitting of the concave portion and the convex portion from being released. Since it provided, it becomes possible to maintain the fitting structure of a horizontal frame material and a vertical frame material more stably, and it becomes possible to improve the stability of a door frame further.

  According to the door frame of claim 4, each of the two frame members is formed so that a cross-sectional shape by a cross section orthogonal to the longitudinal direction of the frame member is a U shape, Since the concave portion is formed by cutting out the central piece and the convex portion is formed by cutting out the pair of side pieces of the other frame member, it becomes possible to configure the fitting structure with a relatively simple structure. Further, the manufacturing cost of the door frame can be further reduced.

  According to the door frame of claim 5, the two frame members are a vertical frame member disposed on the door bottom side of the door, a horizontal frame member orthogonal to the vertical frame member, and a recess. In a state where the convex portions are fitted to each other, the horizontal surface on the outer side of the horizontal frame member is positioned closer to the inner side of the door frame than the end surface of the end portion on the horizontal frame member side of the vertical frame member. Since the accommodation space for accommodating at least a part of the suspension means is formed, it is possible to form the accommodation space of the center suspension means with a relatively simple structure, which further increases the manufacturing cost of the door frame. It becomes possible to reduce. In addition, since at least a part of the central suspension means can be accommodated inside the door, the design of the door can be maintained or improved.

It is a front view of the principal part of the building in which the door which concerns on Embodiment 1 of this invention was installed. It is a figure which shows the door main body of a building, (a) is a front view, (b) is a top view, (c) is a left view, (d) is a right view, (e) is a bottom view. It is AA arrow sectional drawing of the door main body of FIG. It is a BB arrow sectional view of the door main part of FIG. It is a figure which shows a door frame, (a) is a front view, (b) is a top view, (c) is a left view, (d) is a right view, (e) is a bottom view. It is a perspective view which shows the fixed state of an upper side frame material and a door-end side vertical frame material. It is a perspective view which shows the fixed state of an upper side frame material and a door butt side vertical frame material. It is a figure which shows the door main body which concerns on Embodiment 2, (a) is a front view, (b) is a top view, (c) is a left view, (d) is a right view, (e) is a bottom view. It is. It is CC sectional view taken on the line of the door main body of FIG. It is DD arrow sectional drawing of the door main body of FIG. It is a figure which shows a door frame, (a) is a front view, (b) is a top view, (c) is a left view, (d) is a right view, (e) is a bottom view. It is a perspective view which shows the fixed state of an upper side frame material and a door-end side vertical frame material. It is a figure which shows the detail of a nail | claw part, and is a top view of the principal part of FIG. It is a perspective view which shows the fixed state of an upper side frame material and a door butt side vertical frame material. It is a perspective view which shows the modification of an upper side frame material and a door butt side vertical frame material.

  Embodiments of a door frame according to the present invention will be described below in detail with reference to the accompanying drawings. First, [I] the basic concept common to each embodiment is explained, then [II] the specific contents of each embodiment are explained, and [III] finally, a modification to each embodiment is explained. To do. However, the present invention is not limited to each embodiment.

[I] Basic concept common to the embodiments First, the basic concept common to the embodiments will be described. Each embodiment relates to a door frame constituting a door provided at 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. . In addition, the “building opening” is an opening formed to install a door in a part of a building frame (for example, a wall, a ceiling, or a floor). In addition, the installation position and application of the “door” (door) are arbitrary. For example, the “door door” installed at the entrance, the “door entrance door” installed at the entrance and the entrance, or installed inside the building. Including "indoor doors". Also, the door opening / closing structure is arbitrary, and can be configured as, for example, a “folding door” or a “sliding door”. Each embodiment demonstrates the case where a door is a hinged door arrange | positioned at the entrance of a building like an apartment house.

[II] Specific Contents of Each Embodiment Next, specific contents of each embodiment will be described.

[Embodiment 1]
First, the first embodiment will be described. This Embodiment is a form which concerns on the door frame which comprises the door main body of the door fixed with the hinge with respect to the building.

(Constitution)
First, the structure of the door to which the door frame according to the present embodiment is applied will be described. FIG. 1 is a front view of a main part of a building where a door according to the present embodiment is installed. In the following description, the X direction in FIG. 1 is the left-right direction of the door (+ X direction is the left direction of the door, −X direction is the right direction of the door), and the Y direction in FIG. The upper direction of the door, -Y direction is the lower direction of the door, the direction orthogonal to the paper surface of FIG. 1 (Z direction) is the front-rear direction of the door (the direction from the paper surface to the back side (+ Z direction) is the rear of the door The direction (indoor side direction) and the direction from the paper surface to the front side (−Z direction) are referred to as the door front direction (outdoor side direction)).

  As shown in FIG. 1, the door 1A is schematically configured to include a door frame 10 and a door body 20A. However, about the structure which does not mention especially regarding 1 A of doors, description is abbreviate | omitted as what is the same as the past.

(Configuration-door frame)
The door frame 10 is installed at the peripheral edge of the opening 3 formed in the housing 2 of the building, and includes a pair of left and right vertical frames 11 and 12 and a pair of upper and lower horizontal frames 13 and 14. These vertical frames 11 and 12 and horizontal frames 13 and 14 are directly fixed to the building housing 2 at the periphery of the opening 3 by a known method and combined with each other to form a front rectangular ring frame as a whole. Configure. Below, as needed, it is the door tip side of the door main body 20A among the pair of vertical frames 11 and 12 (the left and right sides of the door main body 20A is a side far from a hinge 63 described later. The left side vertical frame is referred to as a “door-end side vertical frame 11” and is on the door bottom side of the door main body 20A (the left and right sides of the door main body 20A, which is the side closer to the hinge 63, and in the present embodiment, the right side). The vertical frame will be referred to as “door bottom side vertical frame 12”. Of the horizontal frames 13 and 14, the upper horizontal frame is referred to as “upper horizontal frame 13”, and the lower horizontal frame is referred to as “lower horizontal frame 14”.

  Here, the door end side vertical frame 11 is provided with a dead bolt receiver, a latch receiver, and a door guard receiver (all not shown). The dead bolt receiver receives a known dead bolt (not shown) provided on the door main body 20A in a state where the door main body 20A is positioned at the fully closed position (the position shown in FIG. 1 in the first embodiment). The deadbolt receiving means is arranged at a position corresponding to the deadbolt. The latch receiver is a latch receiving means for receiving a known latch (not shown) provided on the door body 20A, and is disposed at a position corresponding to the latch. The door guard receiver is a door guard receiving means for receiving a known door guard (or chain lock) (not shown) provided on the door body 20A, and is disposed at a position corresponding to the door guard. Each member which comprises such a door frame 10 can be manufactured by arbitrary methods and materials, for example, can be manufactured by bending and forming a steel plate-shaped body.

(Configuration-door body)
The door main body 20A is a flat opening / closing body for opening / closing the opening 3 of the building. 2A and 2B are views showing the door body 20A, where FIG. 2A is a front view, FIG. 2B is a plan view, FIG. 2C is a left side view, FIG. 2D is a right side view, and FIG. is there. 3 is a cross-sectional view of the door main body 20 of FIG. 4 is a cross-sectional view of the door main body 20A of FIG. As shown in FIGS. 2 to 4, the door body 20 </ b> A includes a door frame 30 </ b> A, a pair of surface materials 41 </ b> A and 42 </ b> A, and a core 50.

(Configuration-Door body-Door frame)
Among these, the door frame 30A is a basic structure mainly responsible for the rigidity of the door body 20A, and is formed so that the front shape is a rectangular ring by combining a plurality of frame members 35A. 5A and 5B are views showing the door frame 30A, where FIG. 5A is a front view, FIG. 5B is a plan view, FIG. 5C is a left side view, FIG. 5D is a right side view, and FIG. is there. Specifically, the plurality of frame members 35A include a pair of left and right vertical frame members 31A and 32A, and a pair of upper and lower horizontal frame members 33A and 34A. Among these, the pair of left and right vertical frame members 31A and 32A are formed so that the lengths in the longitudinal direction are substantially the same, and are arranged so as to be substantially along the vertical direction. The pair of upper and lower horizontal frame members 33A and 34A are formed so that their lengths in the longitudinal direction are substantially the same, and are arranged so as to be substantially along the left-right direction. Hereinafter, among the vertical frame members 31A and 32A, the door frame side vertical frame material 31A will be referred to as “door tip side vertical frame material 31A” and the door edge side vertical frame material 32A may be referred to as “door bottom”. This is referred to as “side vertical frame member 32A”. Of the horizontal frame members 33A and 34A, the upper horizontal frame member 33A is referred to as an “upper horizontal frame member 33A”, and the lower horizontal frame member 34A is referred to as a “lower horizontal frame member 34A”. When it is not necessary to distinguish between the vertical frame members 31A and 32A and the horizontal frame members 33A and 34A, they are simply collectively referred to as “frame member 35A”. Details of the configuration of the door frame 30A will be described later.

(Configuration-Door body-Surface material)
The surface materials 41A and 42A are surface materials attached to the door frame 30A so as to cover the surface of the door frame 30A. In general, the door frame 30A and the core 50 are sandwiched from the indoor side and the outdoor side. Has been placed. Hereinafter, among the surface materials 41A and 42A, the surface material disposed on the indoor side is referred to as “indoor side surface material 41A”, and the surface material disposed on the outdoor side is referred to as “outdoor side surface material 42A, as necessary. ". Details of the configuration of the surface materials 41A and 42A will be described later.

(Configuration-Door body-Core)
The core 50 is a core material of the door main body 20A, is filled in the frame member 35A, and is formed so that the front shape is rectangular. Although the specific structure and material of the core 50 are arbitrary, for example, the core 50 is configured as a relatively lightweight and highly rigid core material.

(Configuration-Other configurations)
Further, a handle 61, a latch (not shown), a locking device 62, and a door guard (or chain lock, not shown) are provided on the door end side of the door main body 20A. The handle 61 is for the user to open and close the door main body 20A, and is disposed at a position corresponding to each other on the front surface and the rear surface of the door main body 20A. The latch is for maintaining the door body 20A in the fully closed position regardless of whether the locking device 62 is locked. This latch is connected to the handle 61 via an interlocking mechanism (not shown) provided inside the door body 20A, and the latch is interlocked with the operation of the handle 61 by the user, on the door side of the door body 20A. Can be taken in and out from the side. Thus, in a state where the door main body 20A is positioned at the fully closed position, the latch is latched by a latch receiver (not shown) provided on the door-end side vertical frame 11, so that the door main body 20A is fully closed. Can be maintained. The locking device 62 is a device for locking the door body 20A and includes a dead bolt (not shown). Specifically, when the user performs a key operation from the front of the door body 20A, The dead bolt can be taken in and out from the side of the door body side of the door body 20A, and in the state where the door body 20A is positioned at the fully closed position, the dead bolt is received by the dead bolt receiver provided in the door side vertical frame 11. The door body 20 </ b> A can be locked by being locked (not shown). The locking device 62 is accommodated in the locking device mounting liner 31d of the door-end side vertical frame member 31A through the insertion port 43 formed in the outdoor-side surface material 42A, and the door-end side vertical frame member 31A. It is being fixed with fixing tools, such as a screw. The door guard is for limiting the opening degree of the door main body 20A to a certain level or less, and a door guard mounting liner 31e provided on the indoor side surface of the door-end-side vertical frame member 31A via the indoor-side surface member 41A. The opening of the door body 20A is increased by locking the front end of the door guard to a door guard receiver (not shown) provided on the door end side vertical frame 11. Can be limited.

  A plurality of hinges 63 are provided on the door bottom side of the door body 20A. The plurality of hinges 63 are for pivotally supporting the door body 20A with respect to the door bottom side vertical frame 12 so as to be openable, and are arranged in parallel in the vertical direction. This hinge 63 is configured by connecting two plate-like pieces (not shown) so as to be openable and closable similarly to a known hinge, and one plate-like piece is an indoor side surface material 41A or an outdoor side surface material 42A. And the other plate-like piece is fixed to the door bottom side vertical frame 12 by a fixing tool such as a screw. It is fixed by.

  A door closer (not shown) is provided on the upper side of the door body 20A. This door closer is for automatically closing the door body 20A at a safe speed when the door body 20A is opened. Specifically, the door closer arm portion (not shown) is moved in the front-rear direction. The door body 20A is opened, and the force when the door body 20A is opened is used as a restoring force, and the damper of the door closer (not shown) suppresses a sudden return. Can do. This door closer is disposed on the indoor surface of the door body 20A on the door bottom side, and one end of the arm portion thereof is provided with a door closer mounting liner 33d of the upper horizontal frame member 33A via the indoor side surface material 41A. The other end of the arm part of the door closer is fixed to the upper lateral frame 13 by a fixing tool such as a screw.

  A door stop liner 34d is provided below the door body 20A. This door stop liner 34d prevents the door stop (not shown) provided in the hallway of the building from directly contacting the door body 20A and deforming when the door body 20A is opened. It is arrange | positioned and is arrange | positioned at the outdoor surface of the door-end side of the door main body 20A.

(Configuration-door body-details of the door frame configuration)
Next, details of the configuration of the door frame 30A of the door body 20A will be described. The frame member 35A constituting the door frame 30A can be manufactured in an arbitrary shape, method, and material unless otherwise specified. In the present embodiment, the frame member 35A has a U-shaped cross section that is perpendicular to the longitudinal direction of the frame member 35A from the center piece and the pair of side pieces orthogonal to the center piece. Is formed. More specifically, as shown in FIG. 5, the door end side vertical frame member 31A has a center piece 31a and a pair of side pieces 31b, and the door bottom side vertical frame member 32A has a center piece 32a, a pair of side pieces 32b, and an upper side. The horizontal frame member 33A includes a central piece 33a and a pair of side pieces 33b, and the lower horizontal frame member 34A includes a central piece 34a and a pair of side pieces 34b. It is formed to become. This formation can be performed, for example, by bending a steel plate.

  The arrangement direction of the plurality of frame members 35A thus formed is preferably determined in consideration of the installation structure of the indoor side surface material 41A, the outdoor side surface material 42A, the locking device 62, or the hinge 63. For this reason, in the present embodiment, as shown in FIGS. 5 and 6, the upper horizontal frame member 33A is installed in a direction in which the pair of side pieces 33b protrude toward the inside of the door body 20A. As a result, the central piece 33a of the upper horizontal frame member 33A is positioned closer to the upper side of the door body 20A, and the indoor side surface material 41A and the outdoor side surface material 42A are applied in close contact with the central piece 33a. Can be fixed in contact. Further, the lower horizontal frame member 34A is installed in a direction in which the pair of side pieces 34b protrudes toward the inside of the door main body 20A, whereby the central piece 34a of the lower horizontal frame member 34A becomes the door main body. The indoor side surface material 41A and the outdoor side surface material 42A can be brought into close contact with and fixed to the central piece 34a.

  Further, the door-end-side vertical frame member 31A is arranged in a direction in which the pair of side pieces 31b protrudes toward the door-end-side vertical frame 11, thereby the central piece 31a of the door-end side vertical frame member 31A. A space for accommodating the locking device attachment liner 31d and the locking device 62 can be formed between the pair of side pieces 31b and the pair of side pieces 31b so as to face the door-end side vertical frame 11. Further, the door bottom side vertical frame member 32A is arranged in a direction in which the pair of side pieces 32b protrudes toward the core 50, whereby the center piece 32a of the door bottom side vertical frame member 32A is placed on the door bottom side. The hinge attachment liner 32d for attaching the hinge 63 can be fixed to the central piece 32a, which is disposed at a position facing the vertical frame 12.

  The plurality of frame members 35A arranged in this way are connected to each other by a fitting structure. That is, among the plurality of frame members 35A, one of the two frame members 35A orthogonal to each other so that one frame member 35A can be fitted to the other frame member 35A. Only one concave portion is formed at the end of the frame member 35A so as to open outward in the longitudinal direction of the one frame member 35A, and only one convex portion is formed at the end of the other frame member 35A. . And these two frame members 35A are mutually connected by fitting this convex part to a recessed part.

  Hereinafter, the fitting structure will be described more specifically. FIG. 6 is a perspective view showing a fixed state of the upper horizontal frame member 33A and the door-end side vertical frame member 31A. As shown in FIG. 6, a recess 33c is formed at the left end of the upper horizontal frame member 33A in the longitudinal direction by cutting out the left end portion of the center piece 33a. By projecting the upper end portions of the pair of side pieces 31b at the upper end portion in the direction (more precisely, by further notching the outdoor side end portion and the indoor side end portion of the center piece 31a). 31c is formed. Then, the left end portion in the longitudinal direction of the upper horizontal frame member 33A and the door-end side vertical frame member are formed by fitting the concave portion 33c and the convex portion 31c to each other so that the convex portion 31c is inserted into the concave portion 33c. The upper end portions in the longitudinal direction of 31A are fixed to each other without being welded to each other as in the prior art. Here, the insertion direction of the convex portion 31c with respect to the concave portion 33c is arbitrary. For example, the convex portion 31c can be inserted from the lower side of the concave portion 33c, but in this embodiment, the concave portion 33c is Since the frame member 33A is formed so as to open to the outer side in the longitudinal direction (left side in FIG. 6), the convex portion 31c is pressed against the concave portion 33c in a direction approaching the upper horizontal frame member 33A from the outer side. The portion 31c can be inserted into the recess 33c and fitted.

  Further, the specific shapes of the concave portion 33c and the convex portion 31c are arbitrary as long as they can be fitted to each other, but in the present embodiment, the concave portion 33c in the upper lateral frame member 33A is formed. By making the notch depth (dimension in the left-right direction) D1 for formation the same or less than the width (dimension in the left-right direction) of the side piece 31b of the door-end side vertical frame member 31A, the upper side The left end surface of the side piece 33b of the horizontal frame member 33A and the left side surface of the side piece 31b of the door-end side vertical frame member 31A are flush with each other. For this reason, the indoor side surface material 41A and the outdoor side surface material 42A can be brought into close contact with these end surfaces and side surfaces. Moreover, the notch depth (vertical dimension) D2 for forming the convex part 31c in the door end side vertical frame member 31A is set to the height (vertical dimension) of the side piece 33b of the upper horizontal frame member 33A. With respect to the upper end surface of the center piece 31a of the door-end side vertical frame member 31A (end surface of the convex portion 31c) and the upper side surface of the center piece 33a of the upper lateral frame member 33A. However, they are flush with each other. For this reason, the indoor side surface material 41A and the outdoor side surface material 42A can be brought into close contact with these end surfaces and side surfaces.

  In addition, such a fitting structure around the left end portion of the upper horizontal frame member 33A and the door-end side vertical frame member 31A is fitted around the left end portion of the lower horizontal frame member 34A and the door-end side vertical frame member 31A. The same applies to the composite structure. That is, as shown in FIG. 5, a concave portion 34c is formed by cutting out the left end portion of the central piece 34a at the left end portion in the longitudinal direction of the lower horizontal frame member 34A. By projecting the upper end portions of the pair of side pieces 31b (more precisely, by further notching the outdoor side end and the indoor side end of the center piece 31a) 31c is formed. Then, by fitting the concave portion 34c and the convex portion 31c to each other so that the convex portion 31c is inserted into the concave portion 34c, the left end portion in the longitudinal direction of the lower horizontal frame member 34A and the door-end side vertical frame The lower end portion in the longitudinal direction of the material 31A is fixed to each other without being welded to each other as in the prior art.

  FIG. 7 is a perspective view showing a fixed state of the upper horizontal frame member 33A and the door butt side vertical frame member 32A. As shown in FIG. 7, a concave portion 33c is formed by cutting out the right end portion of the central piece 33a at the right end portion in the longitudinal direction of the upper horizontal frame member 33A. By projecting the upper end portions of the pair of side pieces 32b at the upper end portion in the direction (more precisely, by further notching the outdoor side end portion and the indoor side end portion of the center piece 32a) 32c is formed. Then, by fitting the concave portion 33c and the convex portion 32c with each other so that the convex portion 32c is inserted into the concave portion 33c, the right end portion in the longitudinal direction of the upper horizontal frame member 33A and the door bottom side vertical frame member The upper end portions in the longitudinal direction of 32A are fixed to each other without being welded to each other as in the prior art. Here, the insertion direction of the convex portion 32c with respect to the concave portion 33c is arbitrary. For example, the convex portion 32c can be inserted from the lower side of the concave portion 33c, but in this embodiment, the concave portion 33c is Since the frame member 33A is formed so as to open to the outer side in the longitudinal direction (right side in FIG. 7), the convex part 32c is pressed against the concave part 33c in a direction approaching the upper horizontal frame member 33A from the outer side. The part 32c can be inserted into the recess 33c.

  Further, the specific shapes of the concave portion 33c and the convex portion 32c are arbitrary as long as they can be fitted to each other, but in the present embodiment, the concave portion 33c in the upper lateral frame member 33A is formed. The side piece of the upper horizontal frame member 33A is formed by making the depth of cutout (dimension in the left-right direction) D3 longer than the width (dimension in the left-right direction) of the side piece 32b of the door bottom side vertical frame member 32A. The right end surface of 33b protrudes toward the door bottom side vertical frame 12 from the right side surface of the side piece 32b of the door bottom side vertical frame member 32A. As shown in FIG. The hinge mounting liner 32d can be accommodated in the accommodating space formed between the central piece 32a of the side vertical frame member 32A and the indoor side surface material 41A and the outdoor side surface material 42A. Further, as shown in FIG. 7, the notch depth (vertical dimension) D4 for forming the convex portion 32c in the door butt side vertical frame member 32A is set to the height of the side piece 33b of the upper horizontal frame member 33A. By setting the same or less than the height (dimension in the vertical direction), the upper end surface (end surface of the convex portion 32c) of the center piece 32a of the door butt side vertical frame member 32A and the center of the upper horizontal frame member 33A The upper side surface of the piece 33a is flush with each other. For this reason, the indoor side surface material 41A and the outdoor side surface material 42A can be brought into close contact with these end surfaces and side surfaces.

  Further, such a fitting structure around the right end portion of the upper horizontal frame member 33A and the door butt side vertical frame member 32A is fitted around the right end portion of the lower side frame member 34A and the door butt side vertical frame member 32A. The same applies to the composite structure. That is, as shown in FIG. 5, a recess 34c is formed by cutting out the right end portion of the central piece 34a at the right end portion in the longitudinal direction of the lower horizontal frame member 34A. The lower end of the pair of side pieces 32b is cut out at the lower end in the longitudinal direction (more precisely, the outdoor side end and the indoor side end of the center piece 32a are also cut out). 32c is formed. Then, by fitting the concave portion 34c and the convex portion 32c to each other so that the convex portion 32c is inserted into the concave portion 34c, the right end portion in the longitudinal direction of the lower horizontal frame member 34A and the door bottom side vertical frame The lower end of the material 32A in the longitudinal direction is fixed to each other without being welded to each other as in the prior art.

(Configuration-door body-details of the surface material configuration)
Next, details of the configuration of the indoor side surface material 41A and the outdoor side surface material 42A of the door main body 20A according to Embodiment 1 will be described. As shown in FIGS. 3 and 4, the indoor side surface material 41A includes a main surface portion 41a, an upper side surface portion 41b, a lower side surface portion 41c, a door tip side surface portion 41d, and a door bottom side surface portion 41e. . The main surface portion 41a covers the indoor side surfaces of the door frame 30A and the core 50, the upper side surface portion 41b covers the indoor side portion of the upper side surface of the upper horizontal frame member 33A, and the lower side surface portion 41c The indoor side portion of the lower side surface of the side horizontal frame member 34A is covered, and the door side surface portion 41d covers the indoor side portion of the left side surface of the door side vertical frame member 31A. 41e covers a portion closer to the indoor side on the right side surface of the door bottom side vertical frame member 32A. In addition, the edge part on the outdoor side of the door-end side part 41d is bent toward the door-end side vertical frame member 31A, and the edge part on the outdoor side of the door-side side part 41e is the door-end side vertical frame member 32A. It is bent toward The structure for fixing each part of the indoor side surface material 41A to the door frame 30A and the core 50 is arbitrary, but in the present embodiment, each part of the indoor side surface material 41A is a door facing itself. It is fixed to each part of the frame 30A and the core 50 by an adhesive, and the upper side surface portion 41b is fixed to the upper horizontal frame member 33A by rivets 44, and the lower side surface portion 41c is fixed to the lower horizontal frame. It is fixed to the material 34A by rivets 45. Moreover, the edge part of the doorside side surface part 41d is faced | matched with the edge part of the doorside side surface part 42d mentioned later of 42 A of outdoor side surface materials, and the edge part of the doorside side surface part 41e is the outdoor side surface. The material 42A is abutted against an end portion of a door bottom side surface portion 42e described later. Although the concrete formation method of 41 A of indoor side surface materials comprised in this way is arbitrary, in this Embodiment, by bending one sheet of thin steel plate, these indoor side surface materials 41A of Each part is formed integrally with each other.

  The outdoor side surface material 42A includes a main surface portion 42a, an upper side surface portion 42b, a lower side surface portion 42c, a door tip side surface portion 42d, and a door bottom side surface portion 42e. The main surface portion 42a covers the side surfaces on the outdoor side of the door frame 30A and the core 50, the upper side surface portion 42b covers a portion closer to the outdoor side on the upper side surface of the upper horizontal frame member 33A, and the lower side surface portion 42c A portion closer to the outdoor side on the lower side surface of the side horizontal frame member 34A is covered, and the door tip side surface portion 42d covers a portion closer to the outdoor side on the left side surface of the door tip side vertical frame member 31A, and the door bottom side surface portion 42e covers a portion closer to the outdoor side on the right side surface of the door bottom side vertical frame member 32A. In addition, the indoor side edge part of the doorside side surface part 42d is bent toward the doorside side vertical frame member 31A, and the indoor side edge part of the doorside side surface part 42e is the doorside side vertical frame material 32A. It is bent toward The structure for fixing each part of the outdoor-side surface material 42A to the door frame 30A and the core 50 is arbitrary, but in the present embodiment, each part of the outdoor-side surface material 42A faces the door. It is fixed to each part of the frame 30A and the core 50 by an adhesive, and the upper side surface part 42b is fixed to the upper side horizontal frame member 33A by rivets 44, and the lower side surface part 42c is fixed to the lower side horizontal frame. It is fixed to the material 34A by rivets 45. Moreover, the edge part of the doorside side part 42d is faced | matched with respect to the edge part of the doorside side part 41d, and the edge part of the doorside side part 42e is with respect to the edge part of the doorside side part 41e. It has been matched. Although the specific formation method of the outdoor side surface material 42A configured in this way is arbitrary, in the present embodiment, by bending one thin steel plate, the outdoor side surface material 42A Each part is formed integrally with each other.

  The indoor side surface material 41A and the outdoor side surface material 42A formed in this way function as a decorative material that covers the door frame 30A and the core 50 so as not to be exposed from the outside, and a plurality of frames of the door frame 30A. It also functions as a structural material that prevents the material 35A from falling off. Hereinafter, the fixing structure for fixing the plurality of frame members 35A of the door frame 30A including this point will be described in more detail.

(Configuration-Fixing structure for multiple frame materials of door frame)
First, the fixing structure of the door end side vertical frame member 31A will be described. As described above, the door-end side vertical frame member 31A fits the convex portion 31c of the door-end side vertical frame member 31A with the recess portion 33c of the upper horizontal frame member 33A and the recess portion 34c of the lower horizontal frame member 34A. By doing so, it is connected to the upper horizontal frame member 33A and the lower horizontal frame member 34A. In particular, as shown in FIG. 6 in part, the convex portion 31c is brought into contact with the upper lateral frame member 33A and the lower lateral frame member 34A by contacting the inner side (door bottom side) side surface of the convex portion 31c. The movement to the inner side (door bottom side) is restricted, and the door-end side vertical frame member 31A is prevented from dropping toward the inner side of the door frame 30A. On the other hand, since the concave portion 33c is formed so as to open to the outside (door side), when the door side vertical frame member 31A receives a force toward the outside (door side) for some reason, the concave portion 33c is convex. There is a possibility that the portion 31c moves to the outside (door side) and comes out of the recess 33c and the recess 34c, and the door side vertical frame member 31A falls off toward the outside (door side) of the door frame 30A. However, in the present embodiment, as described above, the door-side side surface portion 41d of the indoor-side surface material 41A and the door-side side surface of the outdoor-side surface material 42A are provided on the outside (door-side side) of the door-side vertical frame member 31A. Since the part 42d is arranged, the door-side side frame part 41d and the door-side side part 42d regulate the movement of the door-side vertical frame material 31A to the outside (door-side), and the door-side vertical The frame material 31A is prevented from dropping toward the outside (door tip side) of the door frame 30A. As described above, in the present embodiment, regarding the door-end side vertical frame member 31A falling off from the door frame 30A, the drop-out with respect to the inner side (door bottom side) is defined as the protrusion 31c, the recess 33c, and the recess 34c. While being prevented by the fitting structure, the indoor side surface material 41A and the outdoor side surface material 42A are prevented from falling off from the outside.

  Further, the fixing structure of the door bottom side vertical frame member 32A is the same as the fixing structure of the door end side vertical frame member 31A. That is, in the present embodiment, regarding the door bottom side vertical frame member 32A falling off from the door frame 30A, it is assumed that the protrusions 32c, the recesses 33c, and the recesses 34c are dropped from the inside (door tip side). It is prevented by the joint structure, and falling off from the outside (door bottom side), the door bottom side surface portion 41e of the indoor side surface material 41A and the outdoor side on the outside (door bottom side) of the door bottom side vertical frame member 32A This is prevented by arranging the door bottom side portion 42e of the surface material 42A.

  Next, the fixing structure of the upper horizontal frame member 33A will be described. As described above, the upper horizontal frame member 33A is fitted between the concave portion 33c of the upper horizontal frame member 33A, the convex portion 31c of the door-end side vertical frame member 31A, and the convex portion 32c of the door bottom side vertical frame member 32A. By doing so, the door end side vertical frame member 31A and the door bottom side vertical frame member 32A are connected. In particular, as partially shown in FIGS. 6 and 7, the inner (lower) surfaces of the pair of side pieces 33b of the upper horizontal frame member 33A are connected to the pair of side pieces 31b of the door-end side vertical frame member 31A. The side piece 33b is restricted from moving inward (downward) by contacting the outer (upper) face and the outer (upper) face of the pair of side pieces 32b of the door butt side vertical frame member 32A. Thus, the upper horizontal frame member 33A is prevented from falling off toward the inner side (lower side) of the door frame 30A. On the other hand, since the concave portion 33c is formed to open outward (upper side), when the upper lateral frame member 33A receives a force toward the outer side (upper side) for some reason, the concave portion 33c is outer side (upper side). And the convex portion 31c and the convex portion 32c are detached from the concave portion 33c, and the upper horizontal frame member 33A may drop out toward the outer side (upper side) of the door frame 30A. However, in the present embodiment, as described above, the upper side surface portion 41b of the indoor side surface material 41A and the upper side surface portion 42b of the outdoor side surface material 42A are disposed outside (upper side) of the upper horizontal frame member 33A. Therefore, the upper side surface portion 41b and the upper side surface portion 42b restrict the movement of the recess 33c to the outside (upper side), and the upper side frame member 33A falls off toward the outer side (upper side) of the door frame 30A. Is preventing. As described above, in the present embodiment, when the upper horizontal frame member 33A is dropped from the door frame 30A, the fitting of the concave portion 33c with the convex portion 31c and the convex portion 32c is to be dropped with respect to the inner side (lower side). While being prevented by the structure, the indoor side surface material 41A and the outdoor side surface material 42A prevent the outer side (upper side) from falling off.

  The fixing structure of the lower horizontal frame member 34A is the same as the fixing structure of the upper horizontal frame member 33A. That is, in the present embodiment, when the lower horizontal frame member 34A is dropped from the door frame 30A, the fitting structure of the concave portion 34c, the convex portion 31c, and the convex portion 32c is to be dropped with respect to the inner side (upper side). In addition, the lower side surface portion 41c of the indoor side surface material 41A and the outdoor side surface material 42A with respect to the outer side (lower side) of the lower lateral frame member 34A are prevented from falling off. This is prevented by arranging the lower side surface portion 42c.

(Door body manufacturing method)
Finally, a method for manufacturing the door body 20A will be described.

  First, the outdoor side surface material 42A is placed on the upper surface of an assembly table (not shown) so that the inner surface of the outdoor side surface material 42A faces upward. And after apply | coating an adhesive agent to the surface contact | abutted with respect to indoor side surface material 41A or outdoor side surface material 42A among each side surface of upper side horizontal frame material 33A and lower side horizontal frame material 34A, these upper side horizontal frame materials 33A and the lower horizontal frame member 34A are respectively placed at predetermined fixed positions on the inner surface of the outdoor surface member 42A, so that the upper horizontal frame member 33A and the lower horizontal frame member 34A are connected to the outdoor surface member 42A. To fix.

  Next, after applying an adhesive to the surface that comes into contact with the indoor side surface material 41A or the outdoor side surface material 42A among the side surfaces of the door end side vertical frame material 31A and the door bottom side vertical frame material 32A, By placing the door-end side vertical frame member 31A and the door-end side vertical frame member 32A at predetermined fixed positions on the inner surface of the outdoor-side surface member 42A, respectively, the door-end side vertical frame member 31A and the door-end side vertical frame member The frame member 32A is fixed to the outdoor side surface member 42A. At this time, the protrusion 31c of the door-end side vertical frame member 31A is fitted into the recess 33c of the upper horizontal frame member 33A and the recess 34c of the lower horizontal frame member 34A, whereby the door-end side vertical frame member 31A is moved upward. The horizontal frame member 33A and the lower horizontal frame member 34A are connected by a fitting structure. Similarly, by fitting the convex portion 32c of the door butt side vertical frame member 32A into the concave portion 33c of the upper horizontal frame member 33A and the concave portion 34c of the lower horizontal frame member 34A, the door butt side vertical frame member 32A is fitted. The upper horizontal frame member 33A and the lower horizontal frame member 34A are connected by a fitting structure.

  Next, after the adhesive is applied to the surface of the side surface of the core 50 that contacts the indoor surface material 41A or the outdoor surface material 42A, the core 50 is placed on the inner surface of the outdoor surface material 42A. As a result, the core 50 is fixed to the outdoor surface material 42A. Further, the locking device attaching liner 31d, the plurality of hinge attaching liners 32d, the door closer attaching liner 33d, the door stop liner 34d, and the door guard attaching liner 31e are combined with the door end side vertical frame material 31A and the door bottom side vertical frame. The material 32A, the upper horizontal frame material 33A, the lower horizontal frame material 34A, and the core 50 are connected by a known method such as an adhesive or a structural bonding tape.

  Thereafter, the indoor side surface material 41A is placed on the outdoor side surface material 42A, the door frame 30A, or the core 50 so that the inner surface of the indoor side surface material 41A faces downward. The outdoor side surface material 42A, the door frame 30A, and the core 50 are connected.

  Then, after the adhesive applied to the indoor side surface material 41A and the outdoor side surface material 42A is cured, the indoor side surface material 41A and the outdoor side surface material 42A are turned into the upper horizontal frame material 33A and the lower horizontal frame material 34A. The rivet 44 is used for connection. This completes the manufacture of the door body 20A.

(Effect of Embodiment 1)
As described above, according to the first embodiment, among the plurality of frame members 35A, of at least two frame members 35A orthogonal to each other, the end of one frame member 35A has the one frame member 35A. Only one concave portion 33c, 34c that opens outward in the longitudinal direction is formed, only one convex portion 31c, 32c is formed at the end of the other frame member 35A, and the convex portion 31c, 32c is formed as the concave portion 33c, 34c. Since the concave portions 33c and 34c and the convex portions 31c and 32c are fitted to each other by contacting the concave portions 33c and 34c from the open side, at least two frame members 35A are connected to the concave portions 33c and 34c. It becomes possible to fix each other by the fitting structure with the convex portions 31c and 32c, and it is necessary to temporarily hold these two frame members 35A in a state where they are abutted with each other as in the past. frame For 35A the need for welding to each other as in the prior art is eliminated, it is possible to reduce the time and cost of manufacturing of the door frame 30A. Further, in the structure in which the two frame members 35A are brought into contact with each other as in the conventional case, the two frame members 35A are likely to be displaced from each other, and the manufacturing error of the door frame 30A may increase. By fixing these two frame members 35A to each other by the fitting structure of the concave portions 33c, 34c and the convex portions 31c, 32c, it is possible to reduce the positional deviation between the two frame members 35A. Thus, the manufacturing error of the door frame 30A can be reduced. In addition, since it is sufficient to form only one concave portion 33c, 34c and one convex portion 31c, 32c, when adopting a complicated fitting structure that forms a plurality of concave portions 33c, 34c or convex portions 31c, 32c. In comparison, it is possible to further reduce labor and cost in manufacturing the door frame 30A. Furthermore, since it is not necessary to weld these two frame members 35A to each other as in the conventional case, even a material that is difficult to weld can be applied as a constituent material of the door frame 30A. It becomes possible to improve the degree of freedom in selecting the constituent material of 30A.

  Further, the indoor side surface material 41A and the outdoor side surface material 42A prevent at least a part of the plurality of frame members 35A from dropping out toward the outside of the door frame 30A, and the concave portions 33c and 34c and the convex portions 31c, Since the fitting with 32c prevents at least a part of the plurality of frame members 35A from falling off toward the inside of the door frame 30A, the effect of preventing the outside from falling off by the surface material, and the convex portions 31c and 32c. By combining the effect of preventing the inner part from falling off by fitting with the recesses 33c and 34c, a stable door frame 30A in which at least a part of the plurality of frame members 35A does not fall out with respect to both the outer side and the inner side. It becomes possible to configure.

  Further, each of the two frame members 31A and 33A is formed to have a U-shaped cross section by a cross section orthogonal to the longitudinal direction of the frame members 31A and 33A, and a central piece 33a of one frame member 33A. Since the concave portion 33c is formed by cutting out and the convex portion 31c is formed by cutting out the pair of side pieces 31b of the other frame member 31A, the fitting structure can be configured with a relatively simple structure. Thus, the manufacturing cost of the door frame 30A can be further reduced.

[Embodiment 2]
Next, the door frame according to Embodiment 2 will be described. This Embodiment is a form which concerns on the door frame which comprises the door main body of the door currently fixed with the center suspension with respect to the building. However, the configuration of the second embodiment is substantially the same as the configuration of the first embodiment unless otherwise specified, and the configuration substantially the same as the configuration of the first embodiment is the same as that of the first embodiment. The same reference numerals and / or names as used are attached as necessary, and the description thereof is omitted.

(Constitution)
First, the structure of the door which concerns on Embodiment 2 is demonstrated. FIG. 8 is a view showing the door body of the door according to the present embodiment, where (a) is a front view, (b) is a plan view, (c) is a left side view, (d) is a right side view, (E) is a bottom view. FIG. 9 is a cross-sectional view of the door main body of FIG. FIG. 10 is a cross-sectional view of the door main body of FIG. 11A and 11B are views showing a door frame, where FIG. 11A is a front view, FIG. 11B is a plan view, FIG. 11C is a left side view, FIG. 11D is a right side view, and FIG. . FIG. 12 is a perspective view showing a fixed state between the upper horizontal frame member and the door-end side vertical frame member. FIG. 13 is a perspective view showing a fixed state of the upper horizontal frame member and the door butt side vertical frame member. As shown in FIGS. 8 to 13, the door 1 </ b> B according to the second embodiment is generally configured to include a door frame 10 and a door main body 20 </ b> B, and the door 1 </ b> A according to the first embodiment. The upper pivot hinge and the lower pivot hinge (both not shown) are provided in place of the plurality of hinges 63, and the upper pivot hinge and the lower pivot hinge are accommodated. A part of the door main body 20B has a different structure from the door main body 20A of the first embodiment.

(Configuration-door body)
The door body 20B is a flat opening / closing body for opening / closing the opening 3 of the building. As shown in FIGS. 8 to 13, the door body 20 </ b> B includes a door frame 30 </ b> B, a pair of surface materials 41 </ b> B and 42 </ b> B, and a core 50.

(Configuration-Door body-Door frame)
Among these, the door frame 30B is a basic structure mainly responsible for the rigidity of the door main body 20B, and is formed so that the front shape is a rectangular ring by combining a plurality of frame members 35B. Specifically, the plurality of frame members 35B include a pair of left and right vertical frame members 31B and 32B and a pair of upper and lower horizontal frame members 33B and 34B. Among these, the pair of left and right vertical frame members 31B and 32B are formed so that the lengths in the longitudinal direction are substantially the same, and are arranged so as to be substantially along the vertical direction. The pair of upper and lower horizontal frame members 33B and 34B are formed so that the lengths in the longitudinal direction are substantially the same, and are arranged so as to be substantially along the left-right direction. Below, among the vertical frame members 31B and 32B, the vertical frame member 31B on the door-end side will be referred to as the “door-end side vertical frame member 31B”, and the vertical frame member 32B on the door-end side will be referred to as “door bottom” as necessary. It is referred to as “side vertical frame member 32B”. Of the horizontal frame members 33B and 34B, the upper horizontal frame member 33B is referred to as an “upper horizontal frame member 33B”, and the lower horizontal frame member 34B is referred to as a “lower horizontal frame member 34B”. The vertical frame members 31B and 32B and the horizontal frame members 33B and 34B are collectively referred to simply as “frame material 35B” when it is not necessary to distinguish between them.

(Configuration-Door body-Surface material)
The surface materials 41B and 42B are surface materials attached to the door frame 30B so as to cover the surface of the door frame 30B. In general, the door frame 30B and the core 50 are sandwiched from the indoor side and the outdoor side. Has been placed. Hereinafter, among the surface materials 41B and 42B, the surface material disposed on the indoor side is referred to as “indoor side surface material 41B”, and the surface material disposed on the outdoor side is referred to as “outdoor side surface material 42B. ".

(Configuration-upper pivot hinge and lower pivot hinge)
The upper pivot hinge and the lower pivot hinge are central suspension means for centrally suspending the door body 20B from the building. The upper pivot hinge and the lower pivot hinge are disposed at a position closer to the door bottom side than the center position on the left and right sides of the door body 20B. Of these, the upper pivot hinge is disposed above the door body 20B, The side pivot hinge is disposed below the door body 20B. These upper pivot hinge and lower pivot hinge can be configured in the same manner as in the prior art.

  The upper pivot hinge is fixed to the upper horizontal frame 13 by a fixing tool such as a screw, and is formed across the upper side surface portion 41b of the indoor side surface material 41B and the upper side surface portion 42b of the outdoor side surface material 42. It is fixed to the pivot hinge mounting liner 33e provided on the upper surface of the upper lateral frame member 33B through the insertion port 46 by a fixing tool such as a screw. The lower pivot hinge is fixed to the lower lateral frame 14 by a fixing tool such as a screw, and extends over the lower side surface portion 41c of the indoor side surface material 41B and the lower side surface portion 42c of the outdoor side surface material 42B. It is fixed to a pivot hinge mounting liner 34e provided on the lower surface of the lower horizontal frame member 34A by a fixing tool such as a screw through the insertion opening 47 formed in this manner.

(Configuration-door body-details of the door frame configuration)
Next, details of the configuration of the door frame 30B of the door body 20B will be described. Instead of the support structure using the hinge 63 as in the first embodiment, the center suspension structure using the upper pivot hinge and the lower pivot hinge is adopted in the present embodiment, so the configuration of the door frame 30B Also, a part of this is different from the present embodiment.

  That is, the door frame 30B is formed with housing spaces 70 and 71 for housing at least a part of the upper pivot hinge and the lower pivot hinge. Specifically, as shown in FIGS. 8 and 11, the upper horizontal frame member 33B has a first portion 33f, a central portion 33g, and a second portion 33h arranged in this order in the longitudinal direction of the upper horizontal frame member 33B. Are arranged side by side. The first portion 33f is the portion of the upper horizontal frame member 33B that is closest to the door butt, and is farther from the upper horizontal frame 13 than the second portion 33h when the door body 20B is positioned at the fully closed position. Arranged in parallel at different positions. The second portion 33h is the most door-side portion of the upper horizontal frame member 33B, and is arranged in parallel so as to be closest to the upper horizontal frame 13 in a state where the door body 20B is positioned at the fully closed position. Is done. The central portion 33g is a portion located between the first portion 33f and the second portion 33h, and is located away from the upper lateral frame 13 in a state where the door body 20B is located at the fully closed position. It is arranged non-parallel so as to reach the adjacent position. Further, as shown in FIG. 14, in the state where the recess 32e of the door frame side vertical frame member 32B and the convex part 33i of the upper horizontal frame member 33B are fitted to each other, the upper end of the door frame side vertical frame member 32B The horizontal surface (upper surface of the first portion 33f) on the outer side of the upper horizontal frame member 33B is positioned closer to the inner side (lower side) of the door frame 30B than the end surface. With such a configuration, the first portion 33f is disposed at a position away from the second portion 33h with respect to the upper lateral frame 13, and the first main body 33B is positioned in the fully closed position. An accommodation space 70 for accommodating at least a part of the upper pivot hinge is formed between the portion 33 f and the upper horizontal frame 13. For example, when the upper pivot hinge is configured to include a pair of upper and lower plates and a support portion that pivotally supports these plates so that they can rotate with respect to each other, all or one of the lower plate and the support portion. The part is accommodated in the accommodation space part 70. In addition, although the specific formation method of the 1st part 33f, the center part 33g, and the 2nd part 33h which comprise the upper side frame material 33B is arbitrary, in this Embodiment, a linear frame member is a center. The first portion 33f, the central portion 33g, and the second portion 33h are formed integrally with each other by being bent around both ends in the longitudinal direction of the portion 33g.

  Further, the lower horizontal frame member 34B is configured by arranging the first portion 34f, the central portion 34g, and the second portion 34h in parallel in this order in the longitudinal direction of the lower horizontal frame member 34B. The first portion 34f is the most door-side portion of the lower horizontal frame member 34B, and is more than the second portion 34h with respect to the lower horizontal frame 14 in a state where the door body 20B is positioned at the fully closed position. They are arranged in parallel at remote locations. The second portion 34h is the portion closest to the door tip in the lower horizontal frame member 34B, and is parallel so as to be closest to the lower horizontal frame 14 in a state where the door body 20B is positioned at the fully closed position. Placed in. The central portion 34g is a portion located between the first portion 34f and the second portion 34h, and is separated from the lower lateral frame 14 in a state where the door body 20B is located at the fully closed position. It arrange | positions non-parallel so that it may reach from the position to the adjacent position. Moreover, although illustration is abbreviate | omitted, in the state which fitted the recessed part 32e of the door butt side vertical frame material 32B, and the convex part of the lower side frame material 34B mutually, the end surface of the lower end part of the door butt side vertical frame material 32B The horizontal surface outside the lower horizontal frame member 34B (the lower surface of the first portion 34f) is positioned closer to the inner side (upper side) of the door frame 30B. With such a configuration, at least a part of the lower pivot hinge is accommodated between the first portion 34f and the lower lateral frame 14 in a state where the door body 20B is located at the fully closed position. Storage space 71 is formed. For example, when the lower pivot hinge is configured to include a pair of upper and lower plates and a support portion that pivotally supports these plates so that they can rotate with respect to each other, all of the upper plate or the support portion or A part is accommodated in the accommodating space 71. In addition, although the specific formation method of the 1st part 34f, the center part 34g, and the 2nd part 34h which comprise the lower side frame material 34B is arbitrary, in this Embodiment, a linear frame member is used. The first portion 34f, the central portion 34g, and the second portion 34h are integrally formed with each other by being bent around both ends in the longitudinal direction of the central portion 34g.

  Next, the fitting structure of the frame member 35B in the present embodiment will be described. First, the fitting structure related to the upper lateral frame member 33B will be described. As shown in FIG. 12, a concave portion 33c is formed by cutting out the left end portion of the center piece 33a at the left end portion in the longitudinal direction of the upper horizontal frame member 33B, and the longitudinal direction of the door-end side vertical frame member 31B. A convex portion 31c is formed on the upper end portion of the pair by cutting out the upper end portions of the pair of side pieces 31b. And by making these recessed part 33c and the convex part 31c mutually fit so that the convex part 31c may be inserted in the recessed part 33c, the left end part of the longitudinal direction of these upper side horizontal frame members 33B and the door-end side vertical frame material The upper end portions in the longitudinal direction of 31B are fixed to each other without being welded to each other as in the prior art. In particular, in the present embodiment, among the pair of side pieces 31b of the door-end side vertical frame member 31B, the outdoor-side side piece 31b is directed toward the door-end side vertical frame 11 rather than the indoor-side side piece 31b. The door main body 20B is formed so as to extend long, and in the state where the door body 20B is located at the fully closed position, the door body side vertical frame 11 is brought into contact with the outdoor side surface of the door front side vertical frame 11. The gap between the material 31B and the door-end side vertical frame 11 is prevented from being exposed to the outside, thereby improving the design and crime prevention.

  Further, as shown in FIG. 14, a convex portion 33 i is formed by cutting out the right end portion of the pair of side pieces 33 b at the right end portion in the longitudinal direction of the upper horizontal frame member 33 B, and the door bottom side vertical frame A recess 32e is formed at the upper end in the longitudinal direction of the material 32B by cutting out the upper end portion of the central piece 32a. Then, by fitting the concave portions 32e and the convex portions 33i with each other so that the convex portions 33i are inserted into the concave portions 32e, the right end portion in the longitudinal direction of the upper horizontal frame member 33B and the door bottom side vertical frame member. The upper end portions in the longitudinal direction of 32B are fixed to each other without being welded to each other as in the prior art. In particular, in the present embodiment, among the pair of side pieces 32b of the door butt side vertical frame member 32B, the outdoor side piece 32b faces the door butt side vertical frame 12 rather than the indoor side piece 32b. It is formed so as to extend long, and in the state where the door main body 20B is positioned at the fully closed position, this portion is brought into contact with the outdoor side surface of the door butt side vertical frame 12 so that these door butt side vertical frames The gap between the material 32B and the door butt side vertical frame 12 is prevented from being exposed to the outside, and the design and crime prevention are improved.

  The fitting structure related to the upper horizontal frame member 33B is similarly applied to the fitting structure related to the lower horizontal frame member 34B. That is, as shown in FIG. 11, a recess 34c is formed by cutting out the right end portion of the center piece 34a at the left end portion in the longitudinal direction of the lower horizontal frame member 34B, and the door-end side vertical frame member 31B. A convex portion 31c is formed at the lower end portion in the longitudinal direction by cutting out the lower end portions of the pair of side pieces 31b. Then, the recesses 34c and the projections 31c are fitted to each other so that the projections 31c are inserted into the recesses 34c, whereby the left end portion in the longitudinal direction of the lower horizontal frame member 34B and the door-end side vertical frame The lower end portion in the longitudinal direction of the material 31B is fixed to each other without being welded to each other as in the prior art. Further, a convex portion 34i is formed by cutting out the right end portion of the pair of side pieces 34b at the right end portion in the longitudinal direction of the lower horizontal frame member 34B, and the longitudinal direction of the door-side vertical frame member 32B is formed in the longitudinal direction. A recess 32e is formed in the lower end portion by cutting out the lower end portion of the central piece 34a. Then, by fitting the concave portion 32e and the convex portion 34i with each other so that the convex portion 34i is inserted into the concave portion 32e, the right end portion in the longitudinal direction of the lower horizontal frame member 34B and the door bottom side vertical frame The lower end of the material 32B in the longitudinal direction is fixed to each other without being welded to each other as in the prior art.

  Furthermore, in the present embodiment, a contrivance for preventing the door end side vertical frame member 31B from dropping off toward the outside of the door frame 30B is provided. Specifically, as shown in FIG. 12, a pair of claw portions 33j is provided in the recess 33c of the upper lateral frame member 33B. The pair of claw portions 33j are release preventing means for preventing the fitting of the upper horizontal frame member 33B and the door-end side vertical frame member 31B from being released. FIG. 13 is a diagram showing details of the claw portion 33j, and is a plan view of the main part of FIG. As shown in FIG. 13, one claw portion 33j is arranged so as to protrude inward from one of a pair of side wall portions in the recess 33c, and the other claw portion 33j is a pair of side wall portions in the recess 33c. It arrange | positions so that it may protrude toward the inner side from the other. That is, the pair of claw portions 33j is arranged so as to sandwich the convex portion 31c of the door-end side vertical frame member 31B from both the outdoor side and the indoor side. In particular, the length L1 from the pair of claw portions 33j to the bottom wall portion of the concave portion 33c is set to be substantially the same as the thickness of the convex portion 31c, whereby the pair of claw portions 33j The convex portion 31c is held in the space portion between the concave portion 33c and the bottom wall portion of the concave portion 33c with almost no gap, so that the upper horizontal frame member 33B is prevented from inadvertently swinging (see FIG. In FIG. 13, for convenience of illustration, the convex portion 31c is indicated by a two-dot chain line). The specific overhanging length and shape of the pair of claw portions 33j are arbitrary. For example, when the convex portion 31c is inserted from the opening side of the concave portion 33c, the convex portion 31c is inserted over the pair of claw portions 33j. Although it is relatively easy to do so, the projection 31c has a planar triangular shape as shown in FIG. 13 so that it is relatively difficult to get over the pair of claws 33j and return to the opposite direction. In addition, although the specific formation method of a pair of nail | claw part 33j is arbitrary, when punching and forming the recessed part 33c in the upper side horizontal frame material 33B in this Embodiment, it punches also about a pair of nail | claw part 33j simultaneously. These pair of claw portions 33j are formed integrally with the upper lateral frame member 33B.

  In the present embodiment, the possibility that an upward or downward force is applied to the upper horizontal frame member 33B is increased, and the upper horizontal frame member 33B falls off toward the outside of the door frame 30B. The potential increases. For this reason, in this Embodiment, the device for preventing such omission more firmly is given. Specifically, as shown in FIG. 14, a pair of claw portions 32 f is provided in the recess 32 e at the upper end of the door-side vertical frame member 32 </ b> B. The pair of claw portions 32f are release preventing means for preventing the fitting of the upper horizontal frame member 33B and the door butt side vertical frame member 32B from being released. The one claw portion 32f is arranged so as to protrude inward from one of the pair of side wall portions in the recess 32e, and the other claw portion 32f is extended inward from the other of the pair of side wall portions in the recess 32e. It is arranged to put out. That is, the pair of claw portions 32f are arranged so as to sandwich the convex portion 33i of the upper lateral frame member 33B from both the outdoor side and the indoor side. In particular, the length L2 from the pair of claw portions 32f to the bottom wall portion of the concave portion 32e is set to be substantially the same as the thickness of the convex portion 33i, whereby the pair of claw portions 32f And the bottom wall portion of the recess 32e hold the projection 33i with almost no gap, thereby preventing the upper horizontal frame member 33B from inadvertently swinging. The specific overhanging length of the pair of claw portions 32f is arbitrary. For example, when the convex portion 33i is inserted from the open side of the concave portion 32e, the convex portion 33i is inserted over the pair of claw portions 32f. Although it is comparatively easy, it is a plane triangle like the one shown in FIG. 13 so that it is relatively difficult to get the convex portion 33i over the pair of claw portions 32f and return it in the opposite direction. In addition, although the specific formation method of a pair of nail | claw part 32f is arbitrary, when punching and forming the recessed part 32e in the door butt side vertical frame material 32B in this Embodiment, it is also about a pair of nail | claw part 32f. The pair of claw portions 32f are formed integrally with the door butt side vertical frame member 32B.

  In addition, although detailed illustration is abbreviate | omitted, the cancellation | release prevention structure regarding such upper side horizontal frame material 33B is similarly applied also about the lower side horizontal frame material 34B. That is, a pair of claw portions (not shown) is provided in the concave portion 34c of the lower horizontal frame member 34B. The pair of claws are release prevention means for preventing the fitting of the lower horizontal frame member 34B and the door-end side vertical frame member 31B from being released. The one claw portion is arranged so as to project inward from one of the pair of side wall portions in the recess 34c, and the other claw portion is projected inward from the other of the pair of side wall portions in the recess 34c. Is arranged. That is, the pair of claw portions are arranged so as to sandwich the convex portion 31c of the door-end side vertical frame member 31B from both the outdoor side and the indoor side.

  Moreover, a pair of nail | claw part (illustration omitted) is provided in the recessed part 32e of the lower end of the door butt side vertical frame material 32B. These pair of claw portions are release preventing means for preventing the fitting of the lower horizontal frame member 34B and the door butt side vertical frame member 32B from being released. The pair of claws are integrally formed with the door butt side vertical frame member 32B, and one of the claws is arranged so as to project inward from one of the pair of side walls in the recess 32e, The nail | claw part is arrange | positioned so that it may protrude toward the inner side from the other of a pair of side wall part in the recessed part 32e. In other words, the pair of claws are arranged so as to sandwich the convex portion 34i of the lower lateral frame member 34B from both the outdoor side and the indoor side.

(Effect of Embodiment 2)
As described above, according to the second embodiment, at least one of at least two frame members 35B orthogonal to each other among the plurality of frame members 35B includes the recesses 32e and 33c and the protrusions 31c and 33i. Since the claw portions 32f and 33j for preventing the fitting of the two members from being released are provided, the fitting structure of the two frame members 35B can be maintained more stably, and the door frame 30B can be stably provided. Can be further improved.

  Further, the two frame members 35B are a door bottom side vertical frame member 32B disposed on the door bottom side of the door 1B, and an upper horizontal frame member 33B or a lower side orthogonal to the door bottom side vertical frame member 32B. From the end face of the end of the upper horizontal frame member 33B or the lower horizontal frame member 34B of the door bottom side vertical frame member 32B in the state where the concave portion 32e and the convex portion 33i are fitted to each other. In addition, the horizontal space on the outer side of the upper horizontal frame member 33B is positioned closer to the inner side of the door frame 30B, so that the accommodation space portions 70 and 71 for accommodating at least a part of the upper pivot hinge or the lower pivot hinge. Therefore, it is possible to form the upper pivot hinge or the lower pivot hinge receiving space 70, 71 with a relatively simple structure, and to further reduce the manufacturing cost of the door frame 30B. It becomes. In addition, since at least a part of the upper pivot hinge or the lower pivot hinge can be stored inside the door 1B, the design of the door 1B can be maintained or improved.

[III] Modifications to Each Embodiment While the embodiments of the present invention have been described above, the specific configuration and means of the present invention are within the scope of the technical idea of each invention described in the claims. It can be arbitrarily modified and improved within. 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 labor and cost of manufacturing the door frames 30A and 30B according to the present invention are about the same as those of the conventional case, the manufacturing labor and cost are about the same as the prior art due to a different structure. The problem of the present application is solved.

(About door frame)
In the first and second embodiments, among the plurality of frame members 35A and 35B of the door frames 30A and 30B, all of the sets that form the two frame members 35 orthogonal to each other are connected by a fitting structure. However, the present invention is not limited to this. For example, only a part of the sets may be connected by a fitting structure, and the other sets may be connected by other structures such as welding and bolting.

  The arrangement direction of the plurality of frame members 35 shown in the first and second embodiments is arbitrary. For example, the door end side vertical frame 11 and the door bottom side vertical frame 12 are rotated 180 degrees around the vertical line. Alternatively, the upper horizontal frame 13 and the lower horizontal frame 14 may be arranged in a direction rotated by 180 degrees around the horizontal line.

(About the cross-sectional shape of the frame material)
In the first and second embodiments, the cross-sectional shape perpendicular to the longitudinal direction of the frame member 35 has been described as being U-shaped. However, the present invention is not limited to this. May be. Further, the “U-shaped” means that the cross-sectional shape of at least a part of the frame member 35 is U-shaped, and the entire cross-sectional shape of the frame member 35 is added to the U-shaped cross-sectional shape. Furthermore, the shape (For example, cross-sectional shape of a lip groove type steel) which added other cross-sectional shape is included.

(About concave and convex parts)
In the fitting structure described in the first and second embodiments, the concave portion and the convex portion may be interchanged. For example, in Embodiment 1, the left end portion in the longitudinal direction of the upper horizontal frame member 33A has a recess 33c formed by cutting out the left end portion of the center piece 33a, and the longitudinal length of the door-end side vertical frame member 31A It has been described that the convex portion 31c is formed by cutting out the upper end portions of the pair of side pieces 31b at the upper end portion in the direction, but the convex portion is formed at the left end portion in the longitudinal direction of the upper lateral frame member 33A. And you may make it form a recessed part in the upper end part of the longitudinal direction of 31 A of door frame side vertical frame materials.

(Release prevention measures)
In the second embodiment, the case where the release prevention unit is configured by a pair of claw portions has been described. However, the release prevention unit may be configured by other than the pair of claw portions. For example, any one of the pair of claws may be omitted. FIG. 15 is a perspective view showing a modification of the upper horizontal frame member and the door bottom vertical frame member. As shown in FIG. 15, the protrusion 32c of the door butt side vertical frame member 32B extends so as to protrude slightly above the upper surface of the upper horizontal frame member 33B, and then the protrusion 32c extends. Claws 32f projecting toward the outdoor side are provided on the side surface on the outdoor side of the portion, and claws 32f projecting toward the indoor side are provided on the side surface on the indoor side in the extended portion of the convex portion 32c. The upper claw 32f may be locked to the upper surface of the upper horizontal frame member 33B to prevent the upper horizontal frame member 33B from coming off upward. Alternatively, the claw portion may not be formed integrally with the upper horizontal frame member 33B or the door butt side vertical frame member 32B, but may be fixed by a fixing tool such as a screw or welding after being formed separately. Good. Further, the release preventing means may be provided in another position instead of the position described above or in addition to the position described above.

(About the door body manufacturing method)
In the first embodiment, after the upper horizontal frame member 33A and the lower horizontal frame member 34A are placed on the outdoor-side surface material 42A, the door-end side vertical frame member 31A and the door-end side vertical frame member 32A are installed. Although described as what is fixed to the outer surface material 42A, it is not limited to this. For example, the order may be changed, or the door frame is made by fitting the door end side vertical frame member 31A, the door bottom side vertical frame member 32A, the upper horizontal frame member 33A, and the lower horizontal frame member 34A to each other. After forming 30A, you may fix this door frame 30A to the outdoor side surface material 42A. Or in the manufacturing method demonstrated in the said Embodiment 1, you may replace the order of 42 A of outdoor side surface materials and 41 A of indoor side surface materials.

(Appendix)
The door frame of Supplementary Note 1 is a door frame that constitutes a door provided in an opening of a building, and is a door frame that is formed so that a front shape becomes a rectangular ring by combining a plurality of frame members, Among the plurality of frame members, of at least two frame members orthogonal to each other, at the end portion of one frame member, only one recess is formed to open to the outside in the longitudinal direction of the one frame member, Only one convex part is formed at the end of the other frame member, and the convex part is brought into contact with the concave part from the opening side of the concave part so that the concave part and the convex part are fitted to each other. ing.

  Further, the door frame according to supplementary note 2 is provided with a surface material attached to the door frame so as to cover the surface of the door frame, and the plurality of frame members are provided by the surface material. Is prevented from falling off toward the outside of the door frame, and by fitting the convex portion and the concave portion, at least a portion of the plurality of frame members is directed toward the inside of the door frame. Prevent falling off.

  Further, the door frame according to supplementary note 3 is the door frame according to supplementary note 1 or 2, wherein at least one of the two frame members is disengaged from the concave portion and the convex portion. A release prevention means for preventing this is provided.

  Further, the door frame of Supplementary Note 4 is the door frame according to any one of Supplementary Notes 1 to 3, wherein each of the two frame members includes a central piece and a pair of side pieces orthogonal to the central piece. The cross-sectional shape by the cross section orthogonal to the longitudinal direction of the frame material is formed to be U-shaped, the recess is formed by cutting out the central piece of the one frame material, and the other frame The convex portions are formed by cutting out the pair of side pieces of the material.

  Further, the door frame of Supplementary Note 5 is the door frame according to any one of Supplementary Notes 1 to 4, wherein the door frame is a door frame that constitutes the door suspended from the center of the building, The two frame members are a vertical frame member disposed on the door butt side of the door and a horizontal frame member orthogonal to the vertical frame member, and the recesses and the protrusions are fitted to each other. The horizontal frame on the outer side of the horizontal frame member is positioned closer to the inner side of the door frame than the end surface of the end of the vertical frame member on the side of the horizontal frame member. An accommodation space for accommodating at least a part of the center suspension means for centrally suspending is formed.

(Additional effects)
According to the door frame of appendix 1, among the plurality of frame members, of at least two frame members orthogonal to each other, the end of one frame member is the outer side in the longitudinal direction of the one frame member. By forming only one concave portion to be opened on the other frame member, forming only one convex portion at the end of the other frame member, and bringing the convex portion into contact with the concave portion from the open side of the concave portion, these concave portions And the convex portions are fitted to each other, so that at least two frame members can be fixed to each other by the fitting structure of the concave portions and the convex portions. Since it is no longer necessary to hold the two frame members in a state of being in contact with each other and to weld these two frame members to each other as in the past, it is possible to reduce labor and cost in manufacturing the door frame. . Further, in the structure in which the two frame members are brought into contact with each other as in the conventional case, the positional deviation between the two frame members is likely to occur, and there is a possibility that the manufacturing error of the door frame increases. By fixing the two frame members to each other by the fitting structure of the concave portion and the convex portion, it becomes possible to reduce the positional deviation between these two frame materials, and to reduce the manufacturing error of the door frame. Is possible. In addition, since only one recess and one protrusion need be formed, compared to the case of employing a complicated fitting structure in which a plurality of recesses or protrusions are formed, labor and cost in manufacturing the door frame are reduced. Can be further reduced. Furthermore, since it is no longer necessary to weld these two frame materials to each other as in the prior art, even a material that is difficult to weld can be applied as a constituent material of the door frame. It becomes possible to improve the freedom of selection of materials.

  According to the door frame described in Appendix 2, the surface material prevents at least a part of the plurality of frame members from dropping off toward the outside of the door frame, and the fitting structure between the convex portion and the concave portion Prevents falling off of at least part of the frame materials toward the inside of the door frame, preventing the outer surface from falling off by the surface material, and preventing the falling out of the inside by fitting the convex and concave parts By combining the effects, it is possible to configure a stable door frame in which at least a part of the plurality of frame members does not fall off both the outside and the inside.

  According to the door frame described in appendix 3, since at least one of the two frame members is provided with the release prevention means for preventing the fitting between the concave portion and the convex portion from being released. The fitting structure of the two frame members can be maintained more stably, and the stability of the door frame can be further improved.

  According to the door frame described in appendix 4, each of the two frame members is formed so that a cross-sectional shape by a cross section orthogonal to the longitudinal direction of the frame member is a U-shape, and the center of one frame member Since the concave portion is formed by cutting out the piece and the convex portion is formed by cutting out the pair of side pieces of the other frame member, it becomes possible to configure the fitting structure with a relatively simple structure, The manufacturing cost of the door frame can be further reduced.

  According to the door frame described in appendix 5, the two frame members are a vertical frame member arranged on the door bottom side of the door and a horizontal frame member orthogonal to the vertical frame member, and the concave portion and the convex portion. In the state where the parts are fitted to each other, the horizontal plane on the outer side of the horizontal frame member is positioned closer to the inner side of the door frame than the end surface of the end portion on the horizontal frame member side of the vertical frame member. Since the accommodating space for accommodating at least a part of the means is formed, it is possible to form the accommodating space for the central suspension means with a relatively simple structure, further reducing the manufacturing cost of the door frame. It becomes possible to do. In addition, since at least a part of the central suspension means can be accommodated inside the door, the design of the door can be maintained or improved.

1A, 1B Door 2 Housing 3 Opening 10 Door frame 11 Vertical frame (door side vertical frame)
12 Vertical frame (Tojiri side vertical frame)
13 Horizontal frame (Upper horizontal frame)
14 Horizontal frame (lower horizontal frame)
20A, 20B Door body 30A, 30B Door frame 31A, 31B Vertical frame material (door end side vertical frame material)
31a Central piece 31b Side piece 31c Protruding part 31d Locking device attachment liner 31e Door guard attachment liner 32A, 32B Vertical frame material (door bottom vertical frame material)
32a Central piece 32b Side piece 32c Convex part 32d Hinge mounting liner 32e Concave part 32f Claw part 33A, 33B Horizontal frame material (upper horizontal frame material)
33a Central piece 33b Side piece 33c Recess 33d Door closer attachment liner 33e Pivot hinge attachment liner 33f First part 33g Central part 33h Second part 33i Convex part 33j Claw part 34A, 34B Horizontal frame material (lower horizontal frame material)
34a Central piece 34b Side piece 34c Recess 34d Door stop liner 34e Pivot hinge mounting liner 34f First part 34g Central part 34h Second part 34i Convex part 35A, 35B Frame material 41A, 41B Surface material (indoor side surface material)
41a Main surface portion 41b Upper side surface portion 41c Lower side surface portion 41d Door tip side surface portion 41e Door bottom side surface portion 42A, 42B Surface material (outdoor side surface material)
42a main surface portion 42b upper side surface portion 42c lower side surface portion 42d door tip side surface portion 42e door bottom side surface portion 44, 45 rivet 46, 47 insertion port 50 core 61 handle 62 locking device 63 hinge 70, 71 accommodation space portion D1, D2 depth L1, L2 length

Claims (5)

It is a door frame that constitutes a door provided in an opening of a building, and is a door frame formed so that a front shape becomes a rectangular ring by combining a plurality of frame members,
Among the plurality of frame members, the cross-sectional shape of the horizontal frame member is a U-shaped cross section by a cross section orthogonal to the longitudinal direction of the horizontal frame member from a central piece and a pair of side pieces orthogonal to the central piece. The horizontal frame member is arranged so that the central piece of the horizontal frame member is positioned outside the door frame rather than the pair of side pieces of the horizontal frame member,
Of the plurality of frame members, a vertical frame member orthogonal to the horizontal frame member is cross-sectionally orthogonal to the longitudinal direction of the vertical frame member from a central piece and a pair of side pieces orthogonal to the central piece. A cross-sectional shape is formed in a U-shape, and the vertical frame member is arranged such that the center piece of the vertical frame member is located inside the door frame with respect to the pair of side pieces of the vertical frame member. Place and
Of the horizontal frame material and the vertical frame material, only one recess is formed at the end of one frame material and is opened to the outside in the longitudinal direction of the one frame material. Formed only one convex part, and these concave parts and convex parts were fitted to each other.
Door frame. A surface material attached to the door frame so as to cover the surface of the door frame,
The surface material prevents at least a part of the plurality of frame members from dropping toward the outside of the door frame,
Preventing at least a part of the plurality of frame members from dropping toward the inside of the door frame by fitting the convex portions and the concave portions;
The door frame according to claim 1. At least one of the horizontal frame member and the vertical frame member is provided with a release preventing means for preventing the fitting of the concave portion and the convex portion from being released.
The door frame according to claim 1 or 2. Forming the recess by cutting out the central piece of the one frame member;
The convex portion was formed by cutting out the pair of side pieces of the other frame member.
The door frame according to any one of claims 1 to 3. A door frame constituting a door provided at an opening of a building, the door frame constituting the door suspended in the center with respect to the building , and the front shape becomes a rectangular ring by combining a plurality of frame members A door frame formed as follows:
Of the plurality of frame members, of the at least two frame members orthogonal to each other, only one concave portion that opens outward in the longitudinal direction of the one frame member is formed at the end of the one frame member. , Only one convex part is formed at the end of the other frame member, and the concave part and the convex part are fitted to each other,
The two frame members are a vertical frame member disposed on the door bottom side of the door, and a horizontal frame member orthogonal to the vertical frame member,
In a state where the concave portion and the convex portion are fitted to each other, the horizontal surface on the outer side of the horizontal frame member is closer to the inner side of the door frame than the end surface of the end portion on the horizontal frame member side of the vertical frame member. By positioning, the accommodation space part for accommodating at least a part of central suspension means for centrally suspending the door with respect to the building was formed,
Door frame.

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