JP3760990B2 - Frame structure of door device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a frame structure of a door device, and more particularly, to the structure capable of opening a door even when the door frame is deformed together with the housing in the event of an earthquake.
[0002]
[Prior art]
In the conventional general door device, as shown in FIG. 9 (a), a door b is hinged inside the door frame a, and an upper part (upper edge) c of the door frame a and an inner side of the upper frame d of the door frame a Between, a fixed (3 to 5 mm) upper dust dimension L is provided over the entire width of the door b. As shown in FIG. 9B, when the door frame a is deformed from the door tip side to the suspension base side due to an earthquake or the like, the door tip side upper end of the door b is lifted by the upper dust dimension L, and the upper frame It hits the inside of d from below.
[0003]
[Problems to be solved by the invention]
In conventional door frames, especially steel doors, the upper frame d and the suspension side and door end side eaves frames e and f are completely integrated by welding and fixed to the wall opening h by an anchor fitting g. Has been. Therefore, when the door-end side upper end of the door b pushes up the upper frame d from the lower side as described above, the door-end side upper end is pressed against the upper frame d fixed to the wall opening h with a large force, It cannot be opened and an evacuation route cannot be secured.
The problem of the present application is that when the door frame is deformed from the door end side to the suspension base side due to an earthquake and the upper end of the door side of the door pushes up the upper frame of the door frame from below, the upper frame is moved upward. In this way, the door is prevented from being pushed firmly against the upper frame so that the door can be opened.
Japanese Patent Laid-Open No. 9-13831 divides the upper, lower, and left and right eyelids into two parts so that when the door frame collapses inward, the door collapses inward in response to the deformation. The door frame slides toward the inside in the longitudinal direction in each ridge, but the door frame is deformed from the door end side to the suspension side as in the present application, and the door end side of the door It is not assumed that the upper end pushes up the upper frame of the door frame from below.
[0004]
[Means for Solving the Problems]
In order to solve the above-described problem, in the present application, a door frame including an upper frame, a suspension side frame, and a door side frame is attached to a wall opening, and the door frame is suspended from the suspension frame on the door frame. In a door device in which the original side part is attached to be freely opened and closed via a hinge or a pivot hinge, the upper frame of the door frame is attached to the wall opening so as to be movable in the plane, and the door side side frame is connected to the upper side frame and the lower side frame. The upper frame is divided into two bodies, the upper frame and the upper frame, and the upper frame is integrally joined to the upper frame. The joint piece and the other collar frame are integrated with a connecting member that is broken by a predetermined breaking force that pulls the upper collar frame upward.
Alternatively, a door frame provided with an upper frame, a hanging side frame, and a doorside side frame is attached to the wall opening, and the hanging side portion of the door is hinged or pivoted on the hanging side frame of the door frame. In a door device that can be freely opened and closed via a hinge, the upper frame of the door frame is attached to the wall opening so as to be movable in-plane, and a discontinuous cut perpendicular to the length is made in the longitudinal middle part of the door-end side frame. Then, the upper frame is joined to the upper frame integrally with the upper frame and the lower frame connected by the connecting portion between the cuts, and the joining piece is attached to one of the upper frame and the upper frame. Are integrally fitted to the other rib frame so as to be movable in the vertical direction, and the connecting portion has a strength to break with a predetermined breaking force that pulls the upper rib frame upward.
According to this, the door frame is deformed from the door end side to the suspension base side, and the upper end of the door side of the door pushes up the upper frame of the door frame from below, and the pushing force at that time When the breaking force is exceeded, the coupling member (joining portion) is broken and the upper frame is separated upward with respect to the lower frame. As a result, the door-side upper end of the door is not firmly pressed against the upper frame, and the door can be opened. Here, the strength of the coupling member or the coupling part is as follows. When the upper frame, the hanging base, and the frame on the door end side are assembled to form a door frame, the door frame is transported or used in a normal state. It is designed to withstand a load that does not break, and is set so as not to break even during attachment work for attaching the door frame to the wall opening.
The joining piece is fitted so as to slide along the back surface of the other saddle frame, and the door-end side saddle frame is close to the joining portion with the upper frame. It is divided into and.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
In FIG. 1, a steel door frame 1 is configured by a hanging base side frame 2, a door side side frame 3, and an upper frame 4. The upper end of the suspension base side frame 2 is joined orthogonally to the suspension side end of the upper frame 4 and is integrally welded. The door end side sill frame 3 has a cross-sectional shape shown in FIG. 4, and the suspension side side sill frame 2 has a symmetrical shape. The door-end side frame 3 is divided into upper and lower side frame 5 and 6 at a portion close to the upper end. The upper end of the upper frame 5 is joined orthogonally to the door end side end of the upper frame 4 and is integrally welded. As shown in FIGS. 2 and 4, the back side (concrete wall side) of the upper side frame 5 has a predetermined vertical (longitudinal) length and is a cross-sectional shape following the bent shape of the back side of the upper side frame 5. The upper part 7 a of the joining piece 7 is fitted and is integrally welded to the upper flange frame 5.
[0006]
The lower part 7b of the joining piece 7 is fitted to the lower side frame 6 so as to be slidable in the vertical direction along the back surface of the lower side frame 6. In the vicinity of the lower end portion thereof, the lower part 7b is horizontally aligned with the lower side frame 6. They are connected by screws (connection members) 8 in the direction. The screw 8 has a strength to break when a predetermined vertical shearing force is applied. The allowable shearing force is that when the upper frame 4, the hanging base, and the eaves frames 2 and 3 on the door end side are assembled to constitute the door frame 1, and when the door frame is transported or used in a normal state, It is designed to withstand a load that does not break, and does not break even when the door frame is attached to the wall opening. The door 40 side of the door 40 is lifted by an earthquake, and the upper frame 4 is pushed up. When an abnormal and excessive predetermined external force (breaking force) is applied, it is set to break.
[0007]
The door frame 1 is attached to the wall opening 10. At this time, the lower side frame 6 of the doorside side frame 3 is composed of an anchor fitting 12 welded to the attachment piece 11 of the lower side frame 6 and a welded reinforcing bar 13 welded to the anchor fitting 12 as in the prior art. And are attached to the concrete wall 14 integrally. In addition, the suspender side frame 2 is also integrally attached to the suspender side wall 14 by the anchor fitting 12 and the welded reinforcing bar 13 as described above.
[0008]
On the other hand, the upper frame 4 integrally provided with the upper side frame 5 is attached to the wall opening 10 via the mounting bracket 20 so that it can be displaced in-plane with respect to the wall opening 10. As shown in FIG. 5 at one end thereof (the opposite side is symmetrical to this), the mounting bracket 20 has a short width with respect to the longitudinal direction of the upper frame 4, and both sides of the prospective direction are in-plane deformation directions ( The mounting piece 21 is bent at a right angle in the vertical direction), and a vertical hole 22 is formed in the mounting piece 21. The upper frame 4 is provided with a vertical piece 4 a that is attached to the outer surface of the mounting piece 21 in the prospective direction over the entire length of the upper frame 4. The long hole 23 is formed. A plate-like sliding member 24 is affixed to the outer surface in the prospective direction of the mounting piece 21, and a rivet 25 penetrates the two long holes 22, 23 from the outside of the vertical piece 4 a across the sliding member 24. And caulked inside the mounting piece 21. The degree of caulking by the rivet 25 is such that the upper frame 4 can slide upward when an excessive external force is applied due to deformation such that the door 40 pushes up the upper frame 4 during an earthquake. With this structure in which the rivets 25 are inserted through the vertical holes 22 and the horizontal holes 23, the upper frame 4 can be displaced in any direction within the plane of the door frame 1.
[0009]
As shown in FIG. 3, between the upper frame 4 and the concrete wall 14 thus attached to the wall opening 10, the inner side surface (rear surface) of the upper frame 4 with an expected width extending between the mounting pieces 21 of the mounting bracket 20. The mortar 26 is filled with a space between the mortar 26 and the space between the mortar 26 and the inner surface of the upper frame 4 when the upper frame 4 is pushed upward. An easily deformable in-frame filling material 27 such as urethane foam is interposed so as to allow displacement. Further, between the upper side wall 4b that extends horizontally from the vertical piece 4a of the upper frame 4 outward in the prospective direction and the opening 29 of the finishing material 28 attached to the front and rear surfaces of the concrete wall 14, a sealing material 30 that is easily elastically deformed. When the upper frame 4 is pushed upward, the upper fitting 4 is allowed to be displaced upward. A step 31 is provided inside the prospective direction of the opening 29 so that it does not interfere with the vertical wall 4a when the mounting bracket 20 is displaced upward.
[0010]
Also between the concrete wall 14 and the suspension side fence frame 2 and the door end side fence frame 3, the mortar 26 integral with the concrete wall 14, and the mortar 26, in the same form as between the concrete wall 14 and the upper frame 4. An easily deformable in-frame filler (foamed urethane) 27 between the collar frames 2 and 3 is filled. In the door end side frame 3, the in-frame filler 27 is filled between the mortar 26 and the back surface of the joining piece 7 in the joining piece 7 portion (FIG. 4), and in the other portions, the upper frame 4 portion. In the same manner as described above, it is filled between the mortar 26 and the back surface of the frame 3. A sealing material 30 similar to the upper frame 4 is also provided between the collar frames 2 and 3 and the opening 29 of the finishing material 28. The door 40 is connected to the suspension side frame 2 so as to be openable and closable by hinges 41 at two upper and lower portions. Instead of the hinge 41, the door 40 may be hinged by a known pivot hinge.
[0011]
According to such a configuration, if the door frame 1 is deformed from the state of FIG. 2 without deformation to the suspension side due to an earthquake, the door end side of the door 40 is lifted upward by the deformation, It strikes the upper frame 4 from below. When this lifting force exceeds the allowable shearing force of the screw 8, the screw 8 that has joined the lower flange frame 6 and the joining piece lower portion 7b is broken. Then, the upper frame 4 is pushed up by the pushing-up force of the door 40, and the upper frame 4 is moved upward while the rivet 25 is guided along the elongated hole 22 in the vertical direction while compressing the filler 27 and the sealing material 30 in the frame. The upper frame 5 is moved upward by the movement of the upper frame 4, and the joining piece 7 integrated with the upper frame 4 is moved with respect to the lower frame 6 fixed to the wall opening 10. The lower part 7b slides upward with respect to the lower frame 6 while deforming the corresponding in-frame filler 27 and the like (FIG. 6). Even if it slides, the state where the lower part 7b fits into the lower side frame 6 is maintained. Therefore, even if the upper and lower side frame 5 and 6 are separated in this way, the indoor and outdoor phases are shifted. There is nothing. Since the door end side end portion of the upper frame 4 escapes upward by pushing up the door end side portion of the door 40, it is prevented that the door door end side upper end is firmly pressed against the upper frame 4, and an earthquake occurs. Even if the door frame 1 is deformed, the door 40 can be opened to secure the passage.
[0012]
In the above embodiment, the case where the wall structure is a so-called wet wall with the concrete wall 14 has been described. However, the present invention is not limited to this, and the door device is attached to the wall opening 10 of the dry wall 14a shown in FIG. But it can be applied. In the case of the dry wall 14a, the back side of the upper frame 4 is not filled at all, and the sealing material is merely applied between the openings of the finishing wall 28a.
[0013]
Next, in FIG. 8, another coupling structure of the upper side frame 5 and the lower side frame 6 of the door-end side frame 3 will be described. In FIG. 8, the upper part of the door-end side frame 3 is shown. The door-end side frame 3 has a plurality of cuts 50 discontinuously in the same horizontal plane in a portion that is a longitudinal intermediate portion and close to the upper end. This cut 50 is formed by laser processing, for example, and is a very thin slit. Between the adjacent cuts 50, the wall of the door-end side frame 3 is left with a small size, and the upper side frame 5 and the lower side frame 6 are connected by such some connecting portions 8 a. In the same way as the connecting member 8 described in the first embodiment, the strength of the connecting portion 8a does not break during normal transportation, construction, use, etc. The strength is set so as to break only when the upper frame 5 is pulled upward by a pulling force. In this embodiment, the lower part 7 b of the coupling piece 7 is integrally welded to the lower side frame 6, and the upper part 7 a is fitted along the back surface of the upper side frame 5 so as to be movable in the vertical direction. Other structures such as that the upper end of the upper frame 5 is integrally welded to an upper frame (not shown in FIG. 8) and that the upper frame is mounted so as to be displaced in-plane with respect to the wall opening. This is the same as the first embodiment. In this configuration, when the upper frame is lifted by the upper part of the door-end portion of the door at the time of an earthquake, the coupling portion 8a is torn off by the excessive load as shown in FIG. The lower frame 6 is separated into the upper and lower frames 6 and the upper frame can escape upward.
[0014]
【The invention's effect】
As described above, according to the present invention, when the door frame is deformed from the door side toward the suspending side and the upper end of the door side pushes up the upper frame of the door frame from below, The upper frame of the frame is separated upward from the lower frame, and the upper frame is allowed to escape upward, so that the upper end of the door side of the door is not pressed firmly against the upper frame, and the door is opened. And secure an evacuation route.
[Brief description of the drawings]
FIG. 1 is a front view of a door device according to the present invention, in which a sealing material is omitted.
FIG. 2 is an enlarged front view of the door tip portion of the door frame.
3 is a cross-sectional view taken along line III-III in FIG.
4 is a cross-sectional view taken along line IV-IV in FIG.
FIG. 5 is an exploded perspective view of an upper frame and a mounting bracket.
FIG. 6 is an enlarged front view of a door tip portion when the door frame is deformed.
FIG. 7 is another embodiment.
FIG. 8 is another embodiment.
FIG. 9 is a conventional technique.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Door frame 2 Suspension side side frame 3 Door tip side frame 4 Upper frame 5 Upper side frame 6 Lower side frame 7 Joining piece 8 Screw (coupling member)
8a Joint part 10 Wall opening 40 Door 41 Hinge 50 Notch

Claims (4)

A door frame provided with an upper frame, a hanging-side frame, and a door-side frame is attached to the wall opening, and the hanging-side part of the door is hinged or pivoted to the hanging frame-side frame of the door frame. In the door device that can be freely opened and closed, the upper frame of the door frame is attached to the wall opening so as to be movable in-plane, and the door-end side frame is divided into two upper and lower frames, an upper frame and a lower frame. The upper frame is integrally joined to the upper frame, and one of the upper and lower side frames is integrally provided with a joining piece, and is fitted into the other collar frame so as to be movable in the vertical direction. A frame structure of a door device, wherein the other frame is integrated with a coupling member that is broken by a predetermined breaking force that pulls the upper frame upward. A door frame provided with an upper frame, a hanging-side frame, and a door-side frame is attached to the wall opening, and the hanging-side part of the door is hinged or pivoted to the hanging frame-side frame of the door frame. In the door device that can be freely opened and closed, the upper frame of the door frame is attached to the wall opening so as to be movable in-plane, and a discontinuous cut perpendicular to the longitudinal direction is made in the longitudinal middle portion of the door-end side frame, The upper frame is joined to the upper frame integrally with the upper frame and the lower frame connected by the joint between the cuts, and the joining piece is integrated into one of the upper and lower frame. The frame structure of the door device is characterized in that it is fitted to the other flange frame so as to be movable in the vertical direction, and the connecting portion has a strength to break with a predetermined breaking force pulling the upper flange frame upward. . The frame structure of the door device according to claim 1 or 2, wherein the joining piece is fitted so as to slide along the back surface of the other frame . The frame structure of the door device according to claim 3, wherein the door end side frame is divided into an upper side frame and a lower side frame at a position close to a joint portion with the upper frame .

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