JP3760992B2 - In-plane deformation structure of door frame - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an in-plane deformation structure of a door frame, and more particularly to the above-described structure that can open a door even when the door frame is deformed together with a casing due to an earthquake.
[0002]
[Prior art]
In a conventional general door device, as shown in FIG. 11 (a), a door b is hinged inside the door frame a, and the upper part (upper edge) c of the door and the inner side of the upper frame d of the door frame a Between, a fixed (3-5 mm) upper dust size is provided over the entire width of the door b. As shown in FIG. 11B, 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 size, and the upper frame d It hits inside 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 is attached to the wall opening so as to be displaceable in the plane, and the connecting piece is attached to the upper frame end where the upper end of the door-end side frame is abutted The connecting piece is inserted into the inside of the fence frame from the upper part of the door-end side frame, and the connection piece is moved upward by a coupling screw between the frame wall of the door-side side frame and the sandwiching member. It is held between the frame wall and the pinching member with a predetermined friction holding force that is movably pinched and generated by the tightening force of the coupling screw. Specifically, the coupling piece forms an elongated hole in the vertical direction, and the coupling screw couples the frame wall and the sandwiching member through the elongated hole.
According to this, the door frame is deformed from the door end side toward 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 is the friction holding force by the coupling screw. When the push-up force exceeds the upper limit, the coupling piece slides upward together with the upper frame, and the upper end of the door-end side frame and the upper frame are separated. 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 frictional holding force of the connecting piece by the connecting screw is configured such that the upper frame and the door-end side frame are assembled via the connecting piece etc. to constitute the door frame, and the door frame is transported or used in a normal state. The coupling screw is tightened so that the frictional holding force is such that it does not easily slide even when the door frame is attached to the wall opening.
[0005]
The sandwiching member is integrally formed with the door-end side frame in the vertical direction, and the coupling piece is fastened to the upper frame with a driving fastener that is driven from the upper side of the upper frame, and the driving fastener is connected to the door-side end surface of the upper frame. It is preferable to drive at an angle with respect to the coupling piece so as to join the frame.
Alternatively, the coupling piece has a substantially L-shaped cross section including a hook portion located on the upper side of the upper wall of the upper frame and a joint portion extending downward through the upper and lower through holes provided in the upper wall continuously to the hook portion. The connecting portion is bent at the first bent portion toward the rear door side facing diagonally from the hooked portion to the inner surface of the frame wall of the frame, and then again inclined obliquely toward the inner surface of the frame wall of the frame. Forms a shape that bends at the bent portion, and forms upper and lower elongated holes below the first bent portion, and is coupled between the frame wall of the eaves frame and the sandwiching member via these elongated holes by a coupling screw When the portion is sandwiched, the contact point between the first bent portion and the inner surface of the frame wall is used as a fulcrum, and the upper portion falls down to the door tip side and the door frame side end surface of the upper frame is pressed against the frame through the upper and lower through holes. It may be. A sliding material may be interposed between the coupling portion and the inner wall surface of the frame.
In these structures, since the door end side end surface of the upper frame is in close contact with the outer surface of the frame wall of the door end side frame, the coupling between both is more firm.
[0006]
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 upper end of the door-end side frame 3 is abutted orthogonally to the door-end side end of the upper frame 4 so that the upper frame 4 can move upward with respect to the door-end side frame 3.
[0007]
In the coupling structure 50 that couples the door-end side frame 3 and the upper frame 4, as shown in FIG. 5, the coupling piece 51 that is integrally fixed to the upper frame 4 and the coupling piece 51 are vertically inserted into the guide groove 52. It includes a pinching piece (pinching member) 53 that is slidably guided. In the coupling piece 51, a long hole 54 in the vertical direction is formed so as to penetrate therethrough, and a coupling lower hole 55 that is inclined toward the sandwiching piece 53 as it goes downward from the upper surface is formed. The sandwich piece 53 has the guide groove 52 that guides the step portion 56 at one end in the width direction of the coupling piece 51, and a portion on the opposite side to the guide groove 52 in the width direction of the other step portion 57 of the coupling piece 51. A pressing surface 59 that presses the back surface 58 is formed. An engagement groove 60 is formed in the width direction on the back surface of the sandwich piece 53.
[0008]
These pieces 51 and 53 are attached to the door-end side frame 3 as follows. That is, in FIG. 2, the piece 53 is inserted into the inner space between the frame walls 61 and 62 in the direction of finding the door-end side frame 3 from the upper end opening of the door-end side frame 3, and the engagement groove 60 is A part of the frame wall 62 on the outer side in the direction of finding the frame 3 is fitted into a protrusion 63 formed by embossing, and in this state, the coupling piece 51 is inserted along the guide groove 52 from the inside of the frame wall 61. The coupling screw 64 is screwed into the pinching piece 53 through the long hole 54 and tightened. As a result, the pinching piece 53 is attracted to the frame wall 61 side, and the connecting piece 51 is pressed against the back surface of the frame wall 61 by the pressing surface 59 and the end 52c of the guide groove 52, and the connecting piece 51 is pinched with the frame wall 61. It is clamped between the pieces 53. The front surface 53a of the portion for forming the guide groove 52 of the sandwiching piece 53 is in front of the front surface 51a of the coupling piece 51 so as not to be pressed against the frame wall 61 in a tightened state so that the front surface 51a of the coupling piece 51 is pressed against the frame wall 61. It is retracted to the position in the direction of finding).
[0009]
Next, a driving fastener 66 is driven into the lower hole 55 from the upper side of the upper wall 65 of the upper frame 4, and the upper frame 4 and the door-end side frame 3 are integrally coupled via the coupling piece 51. Since the driving fastener 66 is driven into the lower hole 55 inclined toward the door-end side of the coupling piece 51, the upper frame 4 moves toward the door-end direction by the driving, so the door-end side of the upper frame 4 The end surface 67 is reliably applied to the outer surface 68 of the frame wall 61 of the door-end side frame 3.
[0010]
Thus, in a state where the coupling piece 51 is sandwiched between the frame wall 61 and the sandwiching piece 53, the end 52 c of the guide groove 52 and the coupling piece 51 are interposed between the pressing surface 59 and the coupling piece portion 58 opposed to the pressing surface 59. A friction holding force determined by a tightening force and a friction coefficient by the coupling screw 64 is acting between the facing portion of the coupling piece 51 and the front surface 51 a of the coupling piece 51 and the frame wall 61. When this frictional holding force is assembled with the upper frame 4 and the door end side frame 3 via the coupling piece 51 or the like to form the door frame 1, and the door frame 1 is transported or used in a normal state. Even when the door frame 1 is attached to the wall opening 10, an excessive upward force exceeding the friction holding force is applied to the upper frame 4 so as not to easily slip. Then, the coupling screw 64 is tightened so that the coupling piece 51 slides upward with respect to the door-end side frame 3 against the friction holding force.
[0011]
The door frame 1 is attached to the wall opening 10. At this time, the door-end side frame 3 is integrated with the concrete wall 14 by the anchor metal 12 welded to the mounting piece 11 of the frame 3 and the welded reinforcing bar 13 welded to the anchor metal 12 as in the prior art. It is attached. 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.
[0012]
On the other hand, the upper frame 4 is attached to the wall opening 10 via the attachment fitting 20 so that it can be displaced in the plane with respect to the wall opening 10. As shown in FIG. 6 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 rivet 25 is inserted into the long hole 22 in the vertical direction and the long hole 23 in the left and right direction, the upper frame 4 can be opened by the upward movement and the accompanying slight movement in the longitudinal direction of the upper frame 4. It can be displaced in the plane of the frame 1.
[0013]
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 portion 31 is provided on the inner side in the prospective direction of the opening 29 so that it does not interfere with the vertical wall 4a when the upper frame 4 moves upward.
[0014]
A space between the concrete wall 14 and the suspension side frame 2 is filled with a mortar 26 integral with the concrete wall 14. Further, in the door-end side frame 3, the mortar 26 is filled in the same manner as the suspension side frame 2 side except for the coupling structure 50 portion. 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 a hinge 41 at two upper and lower portions (of course, more than that). Instead of the hinge 41, the door 40 may be hinged by a known pivot hinge.
[0015]
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 friction holding force between the coupling piece 51, the frame wall 61, and the pinching piece 53, the coupling piece 51 slides upward, and the upper frame 4 is pushed up by the pushing force of the door 40. In the frame 4, the rivet 25 is guided along the vertical hole 22 while compressing the in-frame filler 27 and the sealing material 30, and moves upward so that the door end side end is the door end side frame 3. Is separated upward from the upper end of the substrate (FIG. 7). Even if the coupling piece 51 moves upward, the coupling piece 51 does not come off from the guide groove 52 of the pinching piece 53, so that the phases of the upper frame 4 and the door-end side frame 3 inside and outside the room do not shift. 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 in this way, the door door end side upper end is prevented from being firmly pressed against the upper frame 4. Even if the door frame 1 is deformed by an earthquake, the door 40 can be opened to secure a passage. In the above embodiment, a case of a so-called wet wall in which the wall structure is the concrete wall 14 has been described. However, the present invention is not limited to this, and the present invention can also be applied to a case where a door device is attached to a wall opening of a dry wall.
[0016]
Next, another coupling structure 80 will be described with reference to FIGS. The coupling piece 81 includes a hook portion 82 located above the upper wall 65 of the upper frame 4, and a joint portion 84 extending downward through a vertical through-hole 83 provided in the upper wall 65 continuously to the hook portion 82. It has a substantially L-shaped cross section. The connecting portion 84 is inclined obliquely from the hook portion 82 to the inner surface of the frame wall 61 of the frame 3, and then bent to the door end side by the first bent portion 85, and then is inclined again to the inner surface of the frame wall 61 of the frame 3. The second bent portion 86 is bent toward the end. Upper and lower elongated holes 54 are formed above and below the second bent portion 86, respectively.
[0017]
The upper frame 4 and the door end side frame 3 upper end are joined, the coupling piece 81 is passed through the upper and lower through-holes 83, and a sandwiching plate (sandwich member) 87 is applied to the back side of the coupling portion 84 of the coupling piece 81. A sliding member (sliding plate) 88 made of a Teflon (registered trademark) sheet or the like is interposed between the frame wall 61 and the coupling screw 64 is screwed into the sandwiching plate 87 through the long holes 54. As the upper and lower portions of the second bent portion 86 are attracted to the frame wall 61 by the tightening force, the contact portion P between the first bent portion 85 and the rear surface of the frame wall 61 is used as a fulcrum, and the upper portion is moved to the door end side. The door end side surface 67 of the upper frame 4 is pressed against the eaves frame 3 through the upper and lower through-holes 83, and the coupling piece 81 is sandwiched between the sandwich plate 87 and the frame wall 61, and the tightening force of the coupling screw 64 It is held with friction holding force based on Needless to say, the frictional holding force does not cause slippage when the door frame is constructed on a building or when the door device is used normally, as in the above-described embodiment.
In the event of an earthquake, the door end of the upper frame 4 is pushed upward by the door, and if the pushing force exceeds the friction holding force of the coupling piece 81, the load acts on the hooked portion and the coupling portion 84 Slides upward, and the upper frame 4 moves upward. Therefore, it is possible to prevent the door and the upper frame 4 from pressing firmly, and even when an earthquake occurs, the door can be opened and evacuated.
[0018]
【The invention's effect】
As described above, according to the present invention, when the door frame is deformed from the door end side toward the suspending side and the upper end of the door side pushes up the upper frame of the door frame from below, Since the connecting piece slides upward and the upper frame is allowed to escape upward, it is possible to alleviate the situation in which the door top end of the door is firmly pressed against the upper frame and the door cannot be opened, It is easy to 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 a front enlarged view of a door frame portion of a door frame, partly broken away.
3 is a cross-sectional view taken along line III-III in FIG.
4 is a view as seen from IV in FIG. 3;
FIG. 5 is a perspective view of a coupling piece and a pinching piece.
FIG. 6 is an exploded perspective view of an upper frame and a mounting bracket.
FIG. 7 is an enlarged front view of a door tip portion when the door frame is deformed.
FIG. 8 is another embodiment.
9 is a cross-sectional view taken along the line IX-IX in FIG. 9 and shows a state before the coupling piece is fastened.
10 is a cross-sectional view taken along the line IX-IX in FIG. 9 and shows a state after the coupling piece is fastened.
FIG. 11 is a diagram showing a deformation of the door frame.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Door frame 2 Suspension side side frame 3 Door tip side frame 4 Upper frame 10 Wall opening 40 Door 41 Hinge 51 * 81 Joint piece 53 Nipping piece (nipping member)
54 Long slot 61 in the vertical direction Frame wall 64 of the frame frame Connection screw 65 Upper wall upper wall 66 Driving fastener 67 Upper frame door end surface 82 Hooking portion 83 Upper and lower through hole 84 Connection portion 85 First bent portion 86 First 2 bent portions 87 pinching plate (pinching member)
88 Sliding material P Contact

Claims (5)

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 is attached to the wall opening so as to be displaceable in the plane, and the coupling piece is integrally provided at the upper frame end where the upper end of the door-end side frame is abutted, and the coupling piece is The coupling piece is inserted into the interior of the fence frame from the top of the door-end fence frame, and the coupling piece is movably held by a coupling screw between the frame wall of the door-end fence frame and the sandwiching member. An in-plane deformation structure of a door frame that is held between a frame wall and a pinching member with a predetermined friction holding force generated by a tightening force. 2. The door frame in-plane deformation structure according to claim 1, wherein the coupling piece forms an elongated hole in the vertical direction, and the coupling screw couples the frame wall and the sandwiching member through the elongated hole. . The sandwiching member is integrally formed with the door-end side frame in the vertical direction, and the coupling piece is fastened to the upper frame with a driving fastener that is driven from the upper side of the upper frame, and the driving fastener is connected to the door-side end surface of the upper frame. The in-plane deformation structure of the door frame according to claim 1 or 2, wherein the door frame is driven into the coupling piece so as to join the frame. The coupling piece has a substantially L-shaped cross section composed of a hook portion located on the upper wall upper side of the upper frame, and a joint portion extending downward through an upper and lower through hole provided in the upper wall continuously to the hook portion, The connecting portion bends from the hooked portion to the inner side of the frame wall of the saddle frame at the rear door end side by the first bent portion, and then again to the inner side of the frame wall of the vertical frame and the second bent portion. The upper and lower elongated holes are formed below the first bent portion, and the coupling portion is connected between the frame wall of the eaves frame and the sandwiching member via these elongated holes by a coupling screw. When sandwiched, the contact point between the first bent portion and the inner surface of the frame wall is used as a fulcrum, and the upper part thereof falls to the door tip side and the door frame side end surface of the upper frame is pressed against the frame through the upper and lower through holes. The in-plane deformation structure of the door frame according to claim 1 or 2. The in-plane deformation structure of a door frame according to claim 4, wherein a sliding material is interposed between the coupling portion and the inner surface of the frame wall of the frame.

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