JP2009035870A - Door opening device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door opening device which enables a door and a door frame to be unfixed by human power, when the door can be hardly opened by having the door 10 and the door frame 20 firmly fixed together because the door frame is deformed by earthquakes etc. <P>SOLUTION: This door opening device comprises: an extrusion member 32 rotatable on the axis 35a of rotation; a case 80 which rotatably supports the extrusion member and which is fixed to the door frame 20; and a control lever 70 for turning the extrusion member 32 to an extruding position from a stationary one. The extrusion member 32 does not inhibit a door end portion 12 from getting closer to the door frame 20 in the stationary position, and separates the door end portion 12 from the door frame 20 by coming into contact with a predetermined portion of the indoor-side door end portion 12 of the door when turned to the extruding position, so as to unfix the door and the door frame. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a door opening device for forcibly opening a door when the door frame or the like is deformed by an earthquake or the like and the door and the door frame are firmly fixed. More specifically, in the present invention, when the door and the door frame are firmly fixed and it becomes difficult to open the door, the door and the door frame are released from being fixed by the increased operation force (human power). The present invention relates to a door opening device that can be opened from a door frame. In particular, the present invention releases the fixed state by moving the door and the door frame relative to each other by the increased operating force when the steel door and the steel door frame used for the entrance of the apartment are firmly fixed. The present invention relates to a door opening device.

  Steel doors are generally widely used for entrance doors of buildings including high-rise houses. In a door structure composed of such steel doors and door frames, when the walls around the door structure are deformed by an earthquake, the door, door frame, and hinges of the door are deformed, and the door cannot be opened. As a result, residents were trapped in the room, making it difficult to evacuate and rescue.

Conventionally, for example, Patent Documents 1 to 3 have proposed a technique that enables a door to be opened even if a wall around the door is deformed by an earthquake or other force. Japanese Patent Laid-Open No. 2004-133867 has a taper surface portion on the indoor side of the outer peripheral surface of the door, a flat surface portion on the remaining portion, a taper having a shape corresponding to the taper surface portion and the flat surface portion of the door outer peripheral surface. Disclosing providing a surface portion and a flat surface portion is disclosed. Patent document 2 discloses that a taper part is formed in the peripheral side of a door main body, and the inner peripheral side of the door frame facing the periphery, and a seismic performance is provided. Patent document 3 provides a removable corner member at the corner of the free end side of the door body. When the door frame and the door body are brought into a crimped state due to an earthquake, the door frame and the door body are removed by removing the corner member. Providing a gap between them.
JP-A-8-333963 JP 9-317340 A JP-A-9-13830

  In conventional seismic doors, the interior side part of the upper surface of the door is a tapered surface part and the remaining part is a flat surface part, and the flat surface part of the upper surface of the door is strongly sandwiched by the door frame due to the deformation of the door frame, and the door is opened. There was a problem that made it impossible. In addition, if a taper is provided on the lower surface of the door, the height of the door frame increases accordingly, which is not suitable for a barrier-free house. In addition, remodeling the door body and door frame of an existing door device so as not to be fixed due to an earthquake or the like requires a lot of work in the prior art, and there are disadvantages such as narrowing the passage by installing members. there were.

  An object of the present invention is to provide a door opening device that can be easily attached to an existing door in order to solve the problems of these conventional earthquake-resistant doors and eliminate the inability to open the door due to an earthquake or the like. And An object of the present invention is to provide a door opening device that can easily eliminate a fixed state of a door even for an elderly person by an increased operating force. An object of the present invention is to provide an opening device that can be arranged indoors so as not to impair the appearance of the door structure. Another object of the present invention is to provide a door opening device that can relieve the urgency of evacuation during an earthquake by providing a reliable door opening device and provide a sense of security to residents.

  The object of the present invention is to release a door (fixed) state with an increased operating force even in a situation where water pressure acts from the outside of the door, open the door, and a person passes through the door to evacuate. Is to make it possible. Other objects and advantages of the invention will become apparent from the appended claims and drawings and detailed description of the invention.

  The door opening device according to the present invention includes a door and a door frame in a door structure in which the door can pivot such that a door suspending portion is pivotally attached to the door frame and a door tip portion is separated or close to the door frame. It is for releasing the fixed state between them. The door opening device of the present invention is an extrusion member that can be rotated around a rotation axis, a case that supports the extrusion member to be rotatable and is fixed to the door frame, and the extrusion member is rotated from a steady position to an extrusion position. The pushing member does not hinder the proximity of the door tip to the door frame in the steady position, and contacts the predetermined part of the door tip on the indoor side of the door when rotated to the pushing position. The front portion is separated from the door frame, and thereby the fixed state between the door and the door frame is released. The present invention further resides in a door structure provided with the door opening device of the present invention.

  The door opening device of the present invention can have the following features. (1) The case is fixed to the upper door corner of the door frame. (2) The pushing member is composed of a cam whose cam radius, that is, the distance between the rotation axis and the peripheral surface, increases as the rotation angle increases from the steady position, and increases when the cam is rotated by a predetermined angle from the steady position. The cam radius is positioned between the rotation axis of the cam and a predetermined portion of the door tip, whereby the predetermined portion of the door tip is moved a predetermined distance from the rotation axis of the cam. (3) The ratio (S / R) of the maximum cam radius (R) to the distance (S) between the rotation axis of the cam and the grip portion of the operation lever is 2 or more, and the cam circumferential surface is made of resin. Covered by a layer. (4) One end of the operation lever is fixed to the cam, and the other end is pulled down from the top to the bottom, so that the cam can be rotated around the rotation axis at an angle of 30 ° or more from the steady position. .

  The door opening device of the present invention may have the following configuration instead of or in addition to the above (1) to (4). (5) The case is fixed to the lower door corner of the door frame. (6) The push-out member is a cam whose cam radius increases from the steady position as the rotation angle increases, and when the cam is rotated by a predetermined angle from the steady position, the increased cam radius is the rotation axis of the cam and the door tip. The predetermined portion of the door tip portion is moved by a predetermined distance from the rotation axis of the cam, and the fixed state between the door and the door frame is released. (7) The operation lever is configured such that one end of the operation lever is fixed to the cam and the other end is pushed down from above to rotate the cam around the rotation axis at an angle of 30 ° or more from the steady position. . (8) The operation lever has a bendable portion. (9) The ratio (S / R) of the maximum cam radius (R) to the distance (S) between the rotation axis of the cam and the pedal is 2 or more, and the peripheral surface of the cam is covered with a resin layer. Is done. (10) The cam is rotatable around the rotation axis at an angle of 150 degrees or less from the steady position.

  Embodiments of the present invention will be described with reference to the drawings. In the drawings, similar members are denoted by the same reference numerals, and redundant description is omitted. FIG. 1 is a schematic front view of the door structure 1 provided with the door opening devices 30 and 30 according to the first embodiment of the present invention when viewed from the indoor side, and the door opening devices 30 and 30 are the upper doors of the door frame 20. It is the figure provided in the vicinity of the tip corner part 28a and the lower door corner part 28b, respectively. FIG. 2 is a schematic vertical sectional view of the door opening device 30 at the upper part of the frame in the vertical plane along the line II-II in FIG. 1 and shows a state in which the pushing member (cam) 32 is in a steady position. FIG. 3 is a schematic vertical sectional view of the door opening device 30 at the lower part of the frame in the vertical plane along the line II-II in FIG. 1 and shows a state where the cam 32 is in the pushing position.

  As shown in FIG. 1, the door structure 1 includes a door 10 so that a suspension base portion (not shown) of the door 10 is pivotally attached to the door frame 20, and the door tip portion 12 of the door is separated or close to the door frame 20. 10 is made pivotable. The door 10 includes an upper edge 11a, a lower edge 11b, a door tip 12, an upper door corner 18a, and a lower door corner 18b. The door frame 20 includes a frame upper portion 21a, a frame lower portion 21b, a door tip portion 22, an upper door tip corner portion 28a, and a lower door tip corner portion 28b. As best shown in the vertical cross section of FIG. 2, the frame upper portion 21 a includes an upper ridge portion 25, an upper plate-like portion 26 extending from the bottom surface of the upper ridge portion 25, and a packing 29.

  As shown in FIG. 1, the door opening devices 30 and 30 of the present invention are respectively fixed to the upper door corner 28 a and the lower door corner 28 b of the frame 20, and the door frame 20 is deformed by an earthquake or the like. When a fixed state occurs between the door 10 and the door frame 20, the operation lever 70 is operated with an operating force F by a human hand or a human leg, and the upper door corner 18a of the door is moved to the upper door corner of the frame. The door is released from the fixed state by strongly pushing out from the portion 28a or by strongly pushing the lower door corner 18b of the door from the lower door corner 28b of the frame with the pushing force W (FIG. 3). 10 is intended to be openable. It is considered that the door opening device 30 is often provided at one of the upper door corner 28a and the lower door corner 28b. However, it is preferable to install the door opening device 30 at both corners in order to improve reliability.

  As shown in FIGS. 2 and 3, the door opening device 30 of the present invention is fixed to the door frame 20 while rotatably supporting the pushing member 32, the pushing member 32 that can turn around the rotation axis 35 a. And a control lever 70 for rotating the pushing member 32 from the steady position (FIG. 2) to the pushing position (FIG. 3). As will be described later, the push-out member 32 is preferably a cam including a shaft 35 including a rotation axis 35 a, a peripheral surface 33, and an engagement protrusion 38. The engagement protrusion 38 is connectable to the connection end 71 of the operation lever 70.

  The pushing member 32 does not hinder the proximity of the door tip 12 to the door frame 20 in the steady position shown in FIG. 2, but when the pushing member 32 is rotated to the pushing position (FIG. 3), a part of the pushing member 32 is removed. The predetermined portion 12c (FIG. 3) of the door-end portion on the indoor side of the door is contacted, and the predetermined portion 12c of the door-tip portion is separated from the door frame 20, thereby fixing the door 10 to the door frame 20. Is released. The case 80 of one door opening device 30 is fixed to the upper door corner portion 28 a of the door frame 20. The case 80 of the other door opening device 30 is fixed to the lower door corner portion 28 b of the door frame 20. There is a possibility that the fixed state between the door 10 and the door frame 20 due to an earthquake or the like can be released by attaching the door opening device to either the upper door corner 28a or the lower door corner 28b of the door frame 20. Preferably, the door opening device is installed in both the upper door corner portion 28a and the lower door corner portion 28b of the door frame 20, and when the fixed state cannot be released by only one, the other door opening device It is appropriate to enable

  The pushing member 32 can be a cam whose distance (radius r) between the rotation axis 35a and the peripheral surface 33 changes. The shape of the cam 32 is such that the cam radius r, that is, the distance between the rotation axis and the peripheral surface, increases as the rotation angle around the rotation axis 35a increases. When the cam 32 is rotated by a predetermined angle from the steady position, the maximum cam radius R is located between the rotation axis 35a of the cam and the predetermined portion 12c (FIGS. 3 and 4) of the door tip, and accordingly the door tip portion. The predetermined portion 12c is moved from the rotation axis 35a by a predetermined distance, for example, 3 cm. In many cases, the fixed state between the door 10 and the door frame 20 due to an earthquake or the like can be solved by moving the door 10 and the door frame 20 relatively by about 3 cm.

  The door opening devices 30 and 30 of the present invention have a structure in which the operating lever 70 is operated manually (manual force F) to rotate the cam 32. The size of the operating lever 70, that is, the distance S between the rotation axis 35a and the gripping portion 72 'is increased so that it can be operated even by an elderly person with weak force, and the ratio S / R with the maximum cam radius R of the cam. And the cam can be rotated by the amplified force. The maximum cam radius R of the cam can be, for example, 7 cm. In this case, the dimension S of the operation lever 70 is preferably 14 cm or more. The ratio S / R is preferably 2 or more. R is, for example, 40 cm.

  In the door opening device 30 of FIG. 2, the operation lever 70 includes a connection end 71, a first extension 72, and a second extension 74, and the connection end 71 is engaged with the engagement protrusion 38 of the cam 32. 2 The elongating part 74 forms a gripping part 72 ′ that is gripped manually. In the door opening device 30 of FIG. 2, the cam 32 is moved from the steady position (the position of the cam of FIG. 2) around the rotation axis by pulling down the gripping portion 72 'from the top to the bottom by the operating force F in the direction of the arrow 77. It is rotated over an angle of 30 ° or more. When the cam 32 is rotated, the distance (cam radius s) between the rotation axis 35a and the indoor surface of the door 10 is increased. The maximum cam radius R (FIG. 5) is determined so that the predetermined portion 12c of the door 10 is predetermined from the door frame 20 when the corresponding cam peripheral surface abuts on the predetermined portion 12c of the door 10 (the arrangement is similar to FIG. 3). It is determined to extrude a distance, for example 3 cm.

  3 has substantially the same configuration as the door opening device 30 fixed to the upper door corner 28b except that the door opening device 30 is fixed to the lower door corner 28b. In FIG. 2, the cam 32 is located at the steady position, but in FIG. 3, the cam 32 is located at the pushing position, and shows a state where the door 10 is pushed out. As shown in the vertical cross section of FIG. 2, the frame upper portion 21 a of the door frame 20 includes an upper ridge portion 25 a, an upper plate-like portion 26 a extending from below the upper ridge portion 25 a, and a packing 29. The operation lever 70 is connected to the first extension portion 72 with a pedal 75 for stepping on with a foot via a bent portion 73. The bent portion 73 is configured by using a hinge or the like, and after the pedal 75 contacts the floor surface, the bent portion 73 can be extended along the floor surface.

  FIG. 4 is a schematic horizontal sectional view of the opening device 30 as viewed from the direction of arrows IV-IV in FIG. 3 and shows a state where the cam 32 is in the pushing position. As shown in the horizontal sectional view of FIG. 4, the door end portion 22 of the frame includes a side ridge portion 23, a side plate-like portion 24 extending from the side ridge portion 23, and packing (not shown). . As is apparent from FIG. 4, the cam 32 is increased by the amplified force by relatively increasing the distance S between the rotation axis 35a and the pedal 75 and increasing the ratio S / R to the maximum cam radius R of the cam. Can be rotated.

  As shown in the vertical section of FIG. 2, the case 80 of the door opening device 30 has an upper folded portion 85 a integrated with the upper horizontal wall portion 83 a on the upper upper plate portion 26 a near the upper door corner portion 28 a of the door frame 20. As shown in the horizontal cross section of FIG. 4, the side folded portion 86 a integrated with the vertical wall 84 b is engaged with the side plate upper portion 24 near the upper door corner 28 a of the door frame 20. Thus, the frame 20 is fixed near the upper door corner 28a. The case 80 of the door opening device 30 in FIG. 2 preferably includes a reinforcing member 88.

  FIG. 5 is a schematic vertical sectional view of the opening device 30 at the lower part of the frame according to the second embodiment of the present invention, showing a state where the cam is in a steady position. In the opening device 30 of FIG. 5, the cam 32 has a peripheral surface 34 covered with a resin layer 33, thereby reducing a frictional resistance when the cam peripheral surface rotates while contacting a door surface (not shown). . The resin layer 33 has a thickness of 0.5 mm, for example. An annular groove 37 is provided around the engaging protrusion 38 connected to the operation lever 70. The groove 37 makes the engagement between the cam 32 and the operation lever 70 larger by increasing the size of the engagement portion between the engagement protrusion 38 and the connection end 71 of the operation lever 70 as compared with the case without it. It is to ensure. Further, a stopper 39 is arranged between the cam 32 and the vertical wall 81 of the case, so that the cam 32 can be easily positioned at the normal position with respect to the vertical wall 81 of the case.

  FIG. 6 is a schematic perspective view of the opening device 30 at the lower part of the frame according to the third embodiment of the present invention, showing a state where the cam is in a steady position. In the opening device 30 shown in FIG. 6, the cam 32 includes a plate-like member 32a and a tubular member 32b. The operation lever 70 includes a first extension part 72 and a pedal 75. When the cam 32 is rotated, the operation lever 70 moves through the opening 82 provided in the upper horizontal wall 83a and the vertical wall 81 of the case 80.

  FIG. 7 is a schematic perspective view of the opening device 30 at the lower part of the frame according to the fourth embodiment of the present invention, and shows the state of the operating lever in the steady position (upper operating lever 70 in FIG. 7) and the operating position. In FIG. 7, the operation lever 70 is provided with a bent portion 73 using a hinge 73 a between a first extension portion 72 and a second extension portion 74, and the second extension portion 74 of the operation lever 70 moves to the floor surface 14. When contacted, the second elongated portion 74 is arranged in parallel to the floor surface 14, and allows the bent portion 73 to be lowered to the vicinity of the floor surface 14, and the rotation angle is increased as compared with the case where the bent portion 73 is not provided. Make it possible.

  According to the present invention, the door frame is deformed by an earthquake or the like, the door and the door frame are in a fixed state, and a state in which evacuation and rescue of indoor persons cannot be performed is achieved by the door opening device having a relatively simple structure. The fixed state between the door frames can be released and solved. Also. The door opening device of the present invention is suitable for an entrance door of a condominium because it can be fixed even by a relatively weak person and the door can be opened.

It is the schematic front view which looked at the door structure of 1st Example of this invention from the room inner side, and an opening device (a case is fixed to a door frame) is each in the upper door corner and lower door corner of a door frame. FIG. FIG. 2 is a schematic vertical sectional view of the opening device 30 at the upper part of the frame in a vertical plane along the line II-II in FIG. FIG. 2 is a schematic vertical sectional view of the opening device 30 at the lower part of the frame in the vertical plane along the line II-II in FIG. FIG. 4 is a schematic horizontal sectional view of the opening device 30 as seen from the direction of arrows IV-IV in FIG. 3, showing a state where the cam is in the operating position. It is a general | schematic vertical sectional view of the opening | release apparatus 30 of the frame lower part of 2nd Example of this invention, and shows the state which has a cam in a steady position. It is a schematic perspective view of the opening | release apparatus 30 of the frame lower part of 3rd Example of this invention, and shows the state which has a cam in a steady position. It is a schematic perspective view of the opening | release apparatus 30 of the frame lower part of 4th Example of this invention, and shows the state in the normal position and operating position of an operation lever.

Explanation of symbols

1: Door structure, 10: Door, 11: Upper edge, 11b: Lower edge, 12: Door tip, 12c: Predetermined part, 14: Floor surface, 18a: Upper door corner of door, 18b: Lower door corner of door, 20: door frame, 21a: upper frame, 21b: lower frame, 22: door edge of frame, 23: lateral ridge, 24: side plate, 25: upper Ridge, 25b: lower ridge, 26: upper plate-like portion, 28a: upper door corner of the frame, 28b: upper door corner of the frame, 29: packing, 30: door opening device, 32: Cam (pushing member), 33: resin layer, 34: peripheral surface, 35: rotating shaft, 35a: rotating axis, 37: groove, 38: engaging protrusion, 39: stopper, 70: operating lever, 71: connecting end 72: first extension part, 72 ': gripping part, 73: bending part, 74: second extension part, 75: pedal, 77: operating direction, 8 : Case, 81: Vertical wall, 82: Opening, 83a: Upper horizontal wall, 83b: Lower horizontal wall, 84a: Vertical wall, 84b: Vertical wall, 85a: Upper folding part, 85b: Lower folding part, 86: Side folding Part, 88: reinforcing material, F: operating force, W: extrusion force.

Claims (12)

To release the fixed state between the door and the door frame in the door structure in which the door can be pivoted so that the hanging part of the door is pivotally attached to the door frame and the door tip of the door is separated from or close to the door frame. Door opening device,
An extrusion member rotatable around a rotation axis, a case fixed to the door frame while rotatably supporting the extrusion member, and an operation lever for rotating the extrusion member from the steady position to the extrusion position;
The pushing member does not hinder the proximity of the door to the door frame in the steady position, and contacts the predetermined part of the door on the indoor side of the door when the door is rotated to the pushing position, and the door to the door from the door frame. A door opening device characterized in that the door is released, thereby releasing the fixed state between the door and the door frame.   The door opening device according to claim 1, wherein the case is fixed to an upper door corner of the door frame.   The pushing member comprises a cam whose cam radius, that is, the distance between the rotation axis and the peripheral surface, increases as the rotation angle increases from the steady position, and the cam is increased when the cam is rotated by a predetermined angle from the steady position. A radius is located between a rotation axis of the cam and a predetermined portion of the door tip, whereby the predetermined portion of the door tip is moved a predetermined distance from the rotation axis of the cam. Or 2 door opening device.   The ratio (S / R) of the maximum cam radius (R) to the distance (S) between the rotation axis of the cam and the grip portion of the operation lever is 2 or more, and the cam peripheral surface is covered with a resin layer. The door opening device according to claim 3, wherein   One end of the operating lever is fixed to the cam, and the other end is pulled down from the top to the bottom, so that the cam can be rotated around the rotation axis at an angle of 30 ° or more from the steady position. The door opening device according to claim 3 or 4.   The door opening device according to claim 1, wherein the case is fixed to a lower door corner of the door frame.   The pushing member is a cam whose cam radius increases from the steady position as the rotation angle increases, and when the cam is rotated by a predetermined angle from the steady position, the increased cam radius is a predetermined value of the cam rotation axis and the door end. The fixed portion between the door and the door frame is released by moving the predetermined portion of the door tip portion by a predetermined distance from the rotation axis of the cam. Door opening device.   One end of the operation lever is fixed to the cam, and the other end is pushed down from top to bottom so that the cam can be rotated around the rotation axis at an angle of 30 ° or more from the steady position. The door opening device according to claim 6 or 7.   The door opening device according to claim 6, wherein the operation lever has a bendable portion.   The ratio (S / R) of the maximum cam radius (R) to the distance (S) between the rotation axis of the cam and the pedal is 2 or more, and the peripheral surface of the cam is covered with a resin layer. The door opening device according to any one of claims 7 to 9.   The door opening device according to any one of claims 3 to 5 and 7 to 10, wherein the cam is rotatable around an axis of rotation at an angle of 150 degrees or less from a steady position.   A door structure comprising the door opening device according to any one of claims 1 to 11.

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