JP2004116114A - Earthquake-proof door opening device using roller and low friction plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To allow attachment to an existing door, and enable the door to be opened even by a weak person by accommodating the in-plane and local deformation of a door frame upon an earthquake. <P>SOLUTION: A roller-mounted body 3 in which a roller 9 rotatable on a horizontal shaft 10 is pivoted with a slight upward projection can be fixedly coupled with mounting bolts 11 to the lock side upper corner of the interior surface 2a or exterior surface 2b of a door against an auxiliary mounting plate 8 on the opposite surface of the door 2, and a roller receiving plate 4 whose lower surface is a roller receiving surface 12 can be mounted on the head 1a of a door frame 1 so as to be normally out of contact with the roller. Low friction plates 5 and 6 that are thin lubricating material pieces of low coefficients of friction can be mounted so as to withstand the in-plane deformation of a door side end face 14 near the mounting position of the roller-mounted body and on the opposing door frame, and so as to withstand the local deformation of the side end face 13 of a jamb 1b of the door frame near an intermediate height position and on the opposing door side end face. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention is capable of opening and closing doors even in the event of a large earthquake, for example, by retrofitting an entrance or an emergency exit (hereinafter referred to as a door of an apartment house) of each room of an apartment house, hotel, or other building. The present invention relates to an improvement in an earthquake-resistant device for a door.
[0002]
[Prior art]
In recent years, it has been said that large-scale earthquakes such as the Miyagi-oki earthquake, the Tokai earthquake, the Tonankai earthquake, and the Nankai earthquake will occur with a fairly high probability, and that the government, local governments, and individuals will need to take countermeasures. When a large earthquake, for example, an earthquake with a seismic intensity of 5 or more, occurs, even if the building itself is prevented from collapsing, the building is deformed by the vibration or impact and the door cannot be opened. Therefore, especially in a high-rise building or the like, the door of the entrance which can be said to be unique cannot be opened, and it is impossible to evacuate from the room or rescue, and it is expected that the damage will be increased.
[0003]
The inventor has previously devised and commercialized a door anti-seismic device having two vertical and horizontal rollers. This is described in Japanese Utility Model Publication No. Sho 61-32072, "It consists of a main body with a roller and a roller receiving plate, and the main body with a roller can be attached to the upper corner of the locking side in the direction in which the door is opened. The main roller is provided with a vertically rotatable longitudinal roller slightly protruding upward, and a horizontally rotatable horizontal roller protruding slightly laterally, while the roller receiving plate is provided with the roller-equipped main body. A door seismic device that can be attached to the upper corner of the door frame corresponding to the part, has a receiving surface for each roller, and attaches both so that the roller and the receiving surface do not come into contact with each other in normal times. " .
[0004]
By installing the above-mentioned door seismic device, even if the door frame is displaced by about 20 mm, it is possible to open the door with a force of 35 kg, and even a weak woman, an elderly person or a child can open the door and evacuate. It became possible to do.
[0005]
The inventor later devised and commercialized a door seismic device described in Utility Model Registration No. 3040497 as an improvement. Comparing this with the above, it is common in that the vertical roller and the horizontal roller are used, but the main plate of the main body attached to the back side of the door has an auxiliary plate portion expanded to the lower side and the anti-lock side, and the front side The mounting sub-plate to be attached to the door has a size corresponding to it, and a screw cylinder with an adjustment nut is inserted between the steel plates on the front and back of the door to accommodate the thickness of the door. Is screwed.
[0006]
This is due to the recent use of doors for newly built apartments, etc., in which the thickness of the front and back steel plates themselves is less than half the thickness of conventional doors for weight reduction. This is because the device could not be mounted with sufficient strength and was lost. With this improved type, even if the steel plates on the front and back of the door are thinner or the thickness of the door is different, the door seismic device can be firmly attached and the seismic function is strengthened.
[0007]
Further, the inventor has disclosed an upper end surface of the upper corner portion on the locking side in the anti-opening direction and an upper inner surface of the corresponding door frame, and a side end surface of the same upper corner portion and a side end surface of the vertical rod portion of the door frame opposed thereto. We also created ones that were fitted face-to-face. It uses no rollers, is easy to install on doors and door frames, and when opening the door after an earthquake occurs, the abutting door and door frame are separated by a low friction coefficient plate The doors can be easily opened because they slide on each other.
[0008]
[Problems to be solved by the invention]
However, verification after the previous Miyagi-oki earthquake (seismic intensity 5, magnitude 7.5) and the 1995 Great Hanshin Earthquake (seismic intensity 6, magnitude 7.2) showed that the building itself was clearer. If a lateral force is applied to the wall by an earthquake even if it does not collapse, the in-plane deformation of the door frame as a whole to the left or right (see FIGS. 6 and 7), and the Local deformation (see FIG. 8) occurs in which the vicinity of the intermediate position is locally deformed.
[0009]
That is, a case where a force is applied to the door frame by an earthquake will be described first with reference to FIG. 6 showing an embodiment of the present invention. When a force is applied to the door frame 1 from left to right, the door frame 1 is vertically moved. The rod portion 1b is deformed from a state drawn by a two-dot chain line to a state drawn by a solid line, and the upper rod portion 1a of the door frame 1 is in the vicinity of the upper corner (the upper left corner in the figure) of the door 2 on the locking side. Press down with strong force to prevent door 2 from opening.
[0010]
Next, a description will be given with reference to FIG. 7 showing an embodiment of the present invention. When a force is applied to the door frame 1 from right to left, the vertical rod portion 1b of the door frame 1 changes from a state drawn by a two-dot chain line. The door 2 is deformed to a state drawn by a solid line, and the upper end of the side end surface 14 of the door 2 strongly contacts the upper end of the side end surface 13 of the vertical rod portion 1b of the door frame 1, so that the door cannot be opened again.
[0011]
Further, referring to FIG. 8 showing the embodiment of the present invention, when a lateral force is locally applied to the vertical rod portion 1b of the door frame 1, the vertical rod portion 1b of the door frame 1 has two points. Locally deformed from the state drawn by the chain line as drawn by the solid line, the vicinity of the intermediate position of the side end surface 13 of the vertical rod portion 1b of the door frame 1 strongly hits the vicinity of the intermediate position of the side end surface 14 of the door 2, After all, the door 2 cannot be opened.
[0012]
Therefore, for doors after March 1996, the opening force is determined to be within 1/120 for in-plane deformation, and to be within 500 N (about 50 kg) for a vertical frame of 8 mm and an upper frame of 4 mm for local deformation. (Currently the Ministry of Economy, Trade and Industry, Industrial Technology Institute). However, it can be said that measures against the case where the vertical rod portion of the door frame 1 is locally deformed cannot be sufficiently coped with simply by attaching the above-mentioned door anti-seismic device to the upper corners of the door and the door frame.
[0013]
Therefore, it can be retrofitted to ready-made doors, especially high-rise apartments, and even if the door frame is locally deformed as well as in-plane when an earthquake occurs, it can be compared to elderly people, women, and children. There is a demand for an anti-shock device for doors that allows the door to be opened even with a weak force.
[0014]
Further, as is apparent from the fact that dust easily accumulates on the upper end surface of the upper corner of the door, the dust easily adheres to the surface of the material having a low friction coefficient mounted on the upper end surface of the upper corner of the door. For this reason, when an attempt is made to open the door after the occurrence of an earthquake, friction is increased, and it is expected that the door cannot be easily opened.
[0015]
The present invention has been developed as a result of various studies in order to respond to the above-mentioned demands, and an object of the present invention is to be able to easily attach to ready-made doors and door frames. An object of the present invention is to provide a device that can open a door even with a relatively weak force in response to local deformation as well as in-plane deformation.
[0016]
[Means for Solving the Problems]
The earthquake door opening device by the roller and the low friction plate according to the present invention,
It is composed of a main body 3 with a roller, a roller receiving plate 4, and low friction plates 5 and 6 for paired / in-plane deformation and paired / local deformation.
The roller-equipped main body 3 pivotally supports a rotatable roller 9 with a horizontal shaft 10 so as to protrude slightly upward from a mounting main plate 7 that can be mounted to the upper corner of the door indoor surface 2a or the outdoor surface 2b on the locking side. The mounting sub-plate 8 and the main mounting plate 7, which can be attached to the door room outer surface 2b or the upper corner of the indoor surface 2a on the locking side, can be fixed by connecting with the mounting bolt 11 with the door 2 interposed therebetween.
The roller receiving plate 4 has a lower surface serving as a roller receiving surface 12 and can be attached to the vertical rod portion 1b of the door frame 1 so as to correspond to the roller 9 of the main body 3 with the roller and not to contact the roller 9 in normal times. ,
On the other hand, the low-friction plates 5 and 6 are lubricating material pieces having a small coefficient of friction and having a thin plate shape. The side end surface 13 of the vertical bar portion 1b of the door frame 1 facing the vicinity of the middle height position of the side end surface 13 of the vertical bar portion 1b of the door frame 1 for local deformation and the door 2 facing the same. It is provided so that it can be attached to the side end surface 14 in a face-to-face manner.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
In the above configuration, the roller-equipped main body 3, the roller receiving plate 4, and the like need to have a strength that does not cause deformation or damage even when subjected to a load due to an impact or vibration due to an earthquake. The material is made of metal. For example, the main mounting plate 7 and the shaft supporting portion 15 are made of zinc die-casting, the roller 9 and its horizontal shaft 10 are made of stainless steel, the mounting auxiliary plate 8 is made of iron, and the roller receiving plate 4 is made of zinc die-casting. Is desirable, but is not limited to this.
[0018]
The door 2 to which the earthquake door opening device is mounted is made of a steel plate (steel plate), and the entire door or at least a portion from the periphery is formed of a double-sided steel plate. The door frame 1 is also a steel plate.
[0019]
When the door 2 is opened outward, the mounting main plate 7 provided with the roller-mounted main body 3 at the upper corner of the door interior surface 2a on the locking side is attached to the installation position of the earthquake door opening device. The mounting sub-plate 8 may be connected to the outer surface 2b with a plurality of mounting bolts 11 and mounted. If the door 2 is an inward-opening type, a mounting main plate 7 provided with a roller-mounted main body 3 at the upper corner on the locking side of the door outer surface 2b, and a sub plate 8 mounted on the door indoor surface 2a with the door 2 interposed therebetween are provided. What is necessary is just to connect and attach with the attachment bolt 11 of this book.
[0020]
The roller 9 of the roller-equipped main body 3 is rotatably supported by a horizontal shaft 10 on a shaft support portion 15 projecting rearward from the mounting main plate 7, but projects slightly upward from the upper edge of the mounting main plate 7. Let me do it. Further, the mounting main plate 7 is formed with round holes 16 for inserting mounting bolts near both sides and near the bottom.
[0021]
The mounting sub-plate 8 is preferably provided with screw cylinders 17 to which the mounting bolts 11 from the main mounting plate 7 can be screwed, respectively, on both sides of the rear surface and on the lower side. Each screw cylinder 17 is inserted between the front and back steel plates of the door 2 at the time of installation, and is formed to be slightly shorter than the gap between the front and back steel plates of the ready-made door which is the narrowest. Just fine. It is desirable that a plurality of mounting screw holes 18 are formed in the mounting sub-plate 8 near the peripheral portion.
[0022]
When the door frame 1 is deformed due to an earthquake, the roller receiving plate 4 comes in contact with the upper end of the roller 9 and receives the roller 9 so that the outer peripheral surface of the roller 9 comes into surface contact instead of point contact. It is desirable that the surface 12 be formed in advance on an inclined surface.
[0023]
The inclined surface of the roller receiving surface 12 is desirably formed from the center toward both sides so that the roller receiving plate 4 can be attached in accordance with the difference between the left and right opening of the door 2 (see, for example, FIGS. (See FIG. 5). The inclination angle varies depending on the gap s between the roller 9 and the roller receiving plate 4 when the apparatus of the present invention is mounted on the door 2 and the door frame 1 and the width of the roller 9. It is preferable to set the range to about 100.
[0024]
The low friction plates 5 and 6 are made of a lubricating material piece having a small coefficient of friction and are formed in a thin plate shape. However, the low friction plates 5 and 6 need to have a strength capable of withstanding a deformation pressing force from the door 2 or the door frame 1 at the time of an earthquake. . For example, ceramics and engineering plastics, especially zirconia-based ceramics and resins such as Teflon (registered trademark) have low friction coefficient and high strength. Those that are unlikely to occur are good. However, the present invention is not limited to the above, and any other ceramics, plastics, or spray-forming materials into which a lubricant is impregnated may be used as long as they have a low friction coefficient and strength.
[0025]
The size of the low-friction plates 5 and 6 varies depending on the size and thickness of the door 2 and the door frame 1, but usually, the length is about 35 to 40 mm, the width is about 25 to 30 mm, and the thickness is about 0 to 30 mm. It is good to be about 5-0.8 mm. This is mounted on the door 2 and the door frame 1 face-to-face. The mounting means is firmly fixed with, for example, an adhesive or an adhesive.
[0026]
The positions where the low friction plates 5 and 6 are mounted are as follows. For the in-plane deformation, the side end surface 14 near the position where the roller-mounted main body portion 3 is attached to the door 2 and the vertical rod portion of the door frame 1 opposed thereto. It is preferable that the side end surface 13 of the door frame 1b be a side end surface 13 near the intermediate position of the vertical rod portion 1b of the door frame 1 and a side end surface 14 of the door 2 opposed thereto.
[0027]
Next, the method of mounting the seismic door opening device according to the present invention is as follows. First, the roller receiving plate 4 is mounted inside the corner of the upper rod portion 1a of the door frame 1 corresponding to the upper corner of the door 2 on the locking side. It is attached with bolts 11.
[0028]
The roller-equipped main body 3 is attached to a position closer to the upper corner of the door interior surface 2a on the locking side (for example, see FIGS. 2 and 3). , For example, a gap of about 1.0 to 2.0 mm so as to be in a state where they do not contact with each other, and correspond to the bolt insertion round holes 16 formed in the mounting main plate 7. The steel plate on the door interior surface 2a is perforated.
[0029]
The attachment sub-plate 8 is attached to the door exterior surface 2b at a position near the upper corner on the locking side (for example, see FIGS. 1 and 3), but the steel plate of the exterior surface 2b is also formed on the steel plate of the door interior surface 2a. A through hole is formed corresponding to the position of the round hole 17 formed.
[0030]
Then, the mounting sub-plate 8 is applied by inserting the screw cylinders 17 through the respective through holes of the door room outer surface 2b, and the mounting main plate 7 is applied to the indoor surface 2a so as to sandwich the door 2, so that each mounting plate is mounted. The bolts 11 are screwed into the screw cylinders 17 from the round holes 16 for inserting the bolts of the mounting main plate 7 through the round holes 16 formed in the steel plate and tightened to mount and fix the main plate portion 3 with rollers (for example, in the above-described drawing). 3).
[0031]
Furthermore, if a plurality of mounting screw holes 18 are formed near the periphery of the mounting sub-plate 8, mounting screws 20 are screwed into the reinforcing plate 19 provided in the steel plate on the front and back of the door 2. Keep it.
[0032]
On the other hand, the low-friction plates 5 and 6 are used for in-plane deformation in the vicinity of the side end surface 14 of the door 2 near the position where the body 3 with the roller is mounted and the side end surface of the vertical rod portion 1b of the door frame 1. 13 and a position opposite to the central position at the side end surface 13 of the vertical rod portion 1b of the door frame 1 and a position opposite to the side end surface 14 of the door 2 for the anti-local deformation. Each face is firmly fixed with an adhesive, an adhesive or the like (for example, see FIG. 1 above).
[0033]
The operation when the door seismic device according to the present invention is attached to the door 2 and the door frame 1 is as follows.
[0034]
If a lateral force is applied to the wall due to the vibration or impact caused by the earthquake in the event of an earthquake, the door frame 1 is deformed from the state drawn by the two-dot chain line in FIG. 6 to the state drawn by the solid line, The upper rod portion 1a of the door frame 1 pushes down the vicinity of the upper corner (the upper left corner in the figure) of the door 2 on the locking side with a strong force and tries to deform. However, according to the present invention, the roller 9 of the roller-equipped main body 3 on the door 2 is in contact with and supported by the roller receiving plate 4 of the upper rod portion 1a of the door frame 1 for deformation in the vertical direction. Vertical deformation of the frame 1 is suppressed by the door 2.
[0035]
When a force is applied to the door frame 1 from left to right by an earthquake, the vertical rod portion 1b of the door frame 1 is deformed from a state drawn by a two-dot chain line to a state drawn by a solid line as shown in FIG. The upper rod 1a of the door frame 1 pushes down the vicinity of the upper corner (the upper left corner in the figure) of the door 2 with a strong force. However, in the present invention, even if the roller 9 of the roller-equipped main body portion 3 of the door 2 comes into contact with the roller receiving surface 12 of the roller receiving plate 4 of the upper rod portion 1a of the door frame 1, as described above, the line contact occurs. Since the roller 9 itself is rotatable, the door can be opened by pressing the door 2 with a relatively close force.
[0036]
In the above case, if the roller receiving surface 12 is formed with an inclined surface in advance as shown in FIG. 4, even if the door frame 1 or the door 2 is deformed due to an earthquake, the roller receiving surface 12 and the roller 9 can be moved. As shown in FIG. 5, the contact with the outer peripheral surface does not become a point contact but is maintained in a line contact after the earthquake. Therefore, the load applied between the two members 12 and 9 is dispersed not at one point but linearly, and the rotation of the roller 9 can be performed smoothly, so that the door 2 can be more easily opened.
[0037]
Further, when a force is applied to the door frame 1 from right to left, as shown in FIG. 7, the vertical rod portion 1b of the door frame 1 is deformed from a state drawn by a two-dot chain line to a state drawn by a solid line. Of the vertical rod portion 1b of the door frame 1 strongly contacts the upper end of the side end surface 13. However, in the present invention, since the thin low-friction plates 5 and 5 provided at the respective portions abut against each other, the sliding can be performed with a relatively small force, and the door 2 can be slid with a relatively close force. Can be opened.
[0038]
Further, when a lateral force is locally applied to the vertical rod portion 1b of the door frame 1, the vertical rod portion 1b of the door frame 1 is drawn by a solid line from a state drawn by a two-dot chain line as shown in FIG. As described above, local deformation occurs so that the vicinity of the intermediate position of the side end surface 13 of the vertical rod portion 1b of the door frame 1 strongly contacts the vicinity of the intermediate position of the side end surface 14 of the door 2. However, in the present invention, since the thin low-friction plates 6 and 6 provided at the respective portions abut against each other, the sliding can be performed with a relatively small force, and the door 2 can be pressed with a relatively close force. You can open the door.
[0039]
In the above case, between the upper rod portion 1a of the door frame 1 and the upper corner portion of the door 2, the roller receiving plate 4 and the roller-equipped main body 3 are mounted without mounting the low friction plate. It is. For this reason, unlike the low-friction plate in which the upper end surface of the door 2 is difficult to clean, the dust is accumulated on the upper surface of the low-friction plate and the low friction coefficient cannot be maintained. There is no need to worry that it will be difficult to open.
[0040]
As described above, in the seismic door opening device using the low friction plate and the roller according to the present invention, even when a force is applied from any of the left and right directions, each of them responds to in-plane deformation and local deformation and acts synergistically. At the same time, the door can be easily opened.
[0041]
【Example】
FIGS. 1 to 8 show an embodiment of an apparatus for opening a door for earthquakes using a low friction plate and rollers according to the present invention. And low friction plates 5 and 6 for local and local deformation.
[0042]
The main mounting plate 7 of the roller-equipped main body 3 is mounted on the upper corner of the door interior surface 2a on the locking side since the door 2 is opened outward. The mounting main plate 7 is made of zinc die-cast here, and has two shafts parallel to each other on one side of a thick plate having a width of about 70.0 mm, a length of about 56.0 mm, and a thickness of about 10.0 mm. The support part 15 is integrally formed, and a roller 9 made of stainless steel and having an outer diameter of 32.0 mm and a width of about 14.0 mm is made of stainless steel so as to protrude about 4.0 mm from the upper end edge of the main mounting plate 7. And is rotatably supported on a horizontal axis 10 having an outer diameter of 8 mm.
[0043]
The mounting main plate 7 has an arcuate shape in the lower half here, and has an inner diameter of about 3 at the lower side and the upper side, so that each mounting bolt 11 can be inserted. A round hole 16 for inserting a 9 mm bolt is formed.
[0044]
The mounting sub-plate 8 of the main body 3 is mounted on the upper corner of the door room outer surface 2b on the locking side since the door 2 is opened outward as described above. Here, the mounting sub-plate 8 is made of iron plate and has a rectangular shape having a width of about 90 mm, a length of about 80 mm, and a thickness of about 6 mm. One side of the mounting sub-plate 8 corresponds to the round hole 16 for inserting each bolt of the mounting main plate 7. Three screw cylinders 17 made of iron and having a female screw hole with a root diameter of about 8.0 mm are protruded at three positions where the mounting bolts 11 can be screwed, and caulked and fixed.
[0045]
The length of the screw cylinder 17 is about 34.5 mm here. Nine mounting screw holes 18 are formed here at positions near the peripheral portion of the mounting sub-plate 8.
[0046]
The roller receiving plate 4 has a lower surface serving as a roller receiving surface 12 and is attached to a lower surface of an upper corner portion of the door frame 1 with a screw 21. Here, the roller receiving plate 4 is made of zinc die-cast, and is about 50.0 mm in width and about 45 in length. It has a rectangular shape with a maximum thickness of about 6.0 mm and a thickness of about 6.0 mm. Here, two countersunk holes for screws are formed.
[0047]
The roller receiving surface 12 is formed on an inclined surface having a thin central portion in the left-right direction so that when the upper end portion of the roller 9 comes into contact with the upper end portion of the roller 9 in the event of an earthquake, a line contact is made instead of a point contact. . Here, the degree of the inclination is such that the central portion in the left-right direction is about 0.5 mm thinner than both sides, in other words, about 25 mm and about 0.5 mm thinner. The roller receiving plate 4 is attached to the door frame 1 so as to use one inclined surface corresponding to the position of the roller 9 attached to the door 2.
[0048]
The installation of the seismic door opening device using the low friction plate and the roller is performed in such a manner that the door 2 here is a left-handed one with a knob or lever attached to the left side when viewed from the outdoor side, so that the door 2 is opened outward. The mounting main plate 7 of the roller-equipped main body 3 is attached to the upper corner of the locking side with a steel plate, and the mounting sub-plate 8 is attached to the steel plate on the door interior surface 2a. Attachment is performed by screwing three mounting bolts 16 from the mounting main plate 7 side to the three screw cylinders 17 on the mounting sub plate 7 side with the door 2 interposed therebetween, and tightening and fixing the bolts. And nine mounting screws 20 are respectively screwed and fixed.
[0049]
Further, since the door 2 here is left-handed as described above, the plate 5 for anti-in-plane deformation is provided on the upper left corner of the door 2 when viewed from the outdoor side. The side end face 14 is attached to the side end face 14 and the side end face 13 of the vertical rod portion 1b of the door frame 1 corresponding thereto. Further, the plate 6 for local deformation is located near an intermediate position of the left side end surface 14 of the door 2, here, the positions above and below the lock 22, and the corresponding left side end surface of the vertical rod portion 1 b of the door frame 1. At position 13, a pair is adhered in a face-to-face manner.
[0050]
The operation of this embodiment of the apparatus for opening a door for an earthquake will be apparent from the description of the embodiment of the present invention, and will be omitted here to avoid duplication. The following describes the test results when this is attached to a door.
[0051]
We commissioned Better Living (3rd floor, 2nd floor, 2nd floor, 5th floor, 2nd floor, Chiyoda-ku, Tokyo), which is conducting the main performance tests based on Japanese Industrial Standards, and requested the earthquake caused by the low friction plate and roller according to the present invention. A performance test was performed on August 29, 2002 with the door opening device attached to the door.
[0052]
The test method is the same as that received at the time of the above-mentioned applicant's seismic device for doors (utility model registration No. 3040497). This is a method of testing deformation follow-up performance including the following.
[0053]
As a result, the force required to open the door was 340NT in the current case, which was 435NT in the previous case of the seismic device for doors, where the regulation requirement value was 500NT, and the required opening force was the conventional one. It was clarified that it was able to be significantly reduced as compared with the test pieces (Test Report No. 022440 for local deformation, Test Report No. 022950 for in-plane deformation).
[0054]
【The invention's effect】
As is clear from the above, the earthquake door opening device using the low friction plate and the roller according to the present invention can be easily attached to a ready-made door and door frame, and if it is attached, the in-plane deformation of the door frame due to the earthquake can be achieved. Not only that, even a relatively weak person can open the door in order to escape or rescue in response to local deformation.
[0055]
That is, this type of conventional device cannot be attached to a ready-made door, cannot cope with in-plane deformation due to an earthquake, cannot cope with local deformation, or adheres dust to the upper end surface of the door which is difficult to clean. In some cases, the friction increased and the desired effect could not be exhibited.
[0056]
On the other hand, the seismic door opening device of the present invention can be easily attached to a ready-made door and a door frame by a skillful combination of a roller and a low friction plate, and if it is attached, If the in-plane deformation of the door frame as a whole occurs in the left-right direction due to the earthquake, the main body with rollers attached to the upper corners of the door and the door frame, and the face attached to the side end surface of the door frame The low friction plates for internal deformation correspond synergistically, so that even relatively weak persons can easily open the door.
[0057]
B) In the above case, a roller and a roller receiving plate are attached between the upper corner of the door and the door frame, and the low friction plate is not attached to the upper end surface of the door. Therefore, there is no need to worry that the door is difficult to open due to dust accumulated on the low friction plate at the upper end of the door, which is difficult to clean.
[0058]
C) In the case where the roller receiving surface of the roller receiving plate on the door frame side is formed with an inclined surface in advance, the contact between the roller and the roller receiving surface when the door or the door frame is deformed due to the earthquake is pointed out. Can maintain line contact instead of contact. Therefore, the load applied between the two is dispersed at one point, and the roller can be smoothly rotated, so that the door can be more easily opened.
[0059]
D) In addition, when the door frame is locally deformed by the earthquake, in most cases, the deformation near the intermediate position in the height direction of the vertical rod portion of the door frame is large, and the door is caught by the vertical rod portion. Although the door cannot be opened, in the present invention, a low friction plate for local deformation is attached to the vicinity of the intermediate position of the vertical rod portion of the door frame and the corresponding side end surface of the door in a face-to-face manner. Therefore, it is easy to open the door by sliding due to the low friction plate for local deformation which is in a contact state in this case, and even a relatively weak person can easily open and escape or rescue. be able to.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a door to which an embodiment of an apparatus for opening an earthquake door using rollers and a low friction plate according to the present invention is attached.
FIG. 2 is a front view from the indoor side showing a main part of an embodiment of an apparatus for opening a door for an earthquake using a roller and a low friction plate according to the present invention.
FIG. 3 is a longitudinal sectional side view showing a main part of an embodiment of an apparatus for opening a door for an earthquake using a roller and a low friction plate according to the present invention.
FIG. 4 is a perspective view from below showing an embodiment of the roller receiving plate.
FIG. 5 is a partial vertical front view showing a relationship between a roller receiving surface and a roller.
FIG. 6 is a front view from the outdoor side showing a state in which a force is applied to the door frame from left to right and the door frame is deformed in-plane.
FIG. 7 is a front view from the outdoor side showing a state in which a force from right to left is applied to the door frame and the door frame is deformed in-plane.
FIG. 8 is a front view from the outdoor side showing a state where a local force is applied to the door frame from the side and the door frame is locally deformed.
[Explanation of symbols]
1-door frame 1a-upper rod 1b-vertical rod 2-door 2a-indoor 2b-outdoor 3 roller body 4-roller receiving plate 5-low friction plate 6-low friction plate 7-main mounting plate 8-Mounting sub-plate 9-Roller 10-Horizontal shaft 11-Mounting bolt 12-Roller receiving surface 13-Side end surface 14-Side end surface 15-Shaft support 16-Round hole 17-Screw cylinder 18-Screw hole 19- Reinforcement plate 20-Mounting screw 21-Mounting screw 22-Lock s-Gap

Claims (2)

It is composed of a main body 3 with a roller, a roller receiving plate 4, and low friction plates 5 and 6 for paired / in-plane deformation and paired / local deformation.
The roller-equipped main body 3 pivotally supports a rotatable roller 9 with a horizontal shaft 10 so as to protrude slightly upward from a mounting main plate 7 that can be mounted to the upper corner of the door indoor surface 2a or the outdoor surface 2b on the locking side. The mounting sub-plate 8 and the main mounting plate 7, which can be attached to the door room outer surface 2b or the upper corner of the indoor surface 2a on the locking side, can be fixed by connecting with the mounting bolt 11 with the door 2 interposed therebetween.
The roller receiving plate 4 has a lower surface serving as a roller receiving surface 12 and can be attached to the vertical rod portion 1b of the door frame 1 so as to correspond to the roller 9 of the main body 3 with the roller and not to contact the roller 9 in normal times. ,
On the other hand, the low-friction plates 5 and 6 are lubricating material pieces having a small coefficient of friction and having a thin plate shape. The side end surface 13 of the vertical bar portion 1b of the door frame 1 facing the vicinity of the middle height position of the side end surface 13 of the vertical bar portion 1b of the door frame 1 for local deformation and the door 2 facing the same. A seismic door opening device including a roller and a low-friction plate, each of which can be attached to the side end surface 14 in a face-to-face manner. The roller receiving surface 12 of the roller receiving plate 4 is formed on the roller receiving surface 12 in advance so as to have an inclined surface corresponding to the deformation when the roller 9 is deformed so that the contact between the roller 9 and the roller receiving surface 12 becomes a line contact even after the earthquake. Item 4. An earthquake door opening device comprising the roller and the low friction plate according to Item 1.

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