JP3801970B2 - Seismic door opening device with roller and low friction plate - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention can be opened / closed even in the event of a large earthquake by retrofitting it to the entrances and exits of each room of an apartment house, hotel, or other building (hereinafter referred to as the door of an apartment house). This relates to the improvement of the seismic device for doors.
[0002]
[Prior art]
Recently, the necessity of countermeasures by the government, local governments, and individuals has been screamed that huge earthquakes such as the Miyagi-oki earthquake, Tokai earthquake, Tonankai earthquake, and Nankai earthquake occur with a very high probability. 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. For this reason, the doors that can be said to be the only ones that can be opened, especially in high-rise buildings, can no longer be opened, and it is not possible to evacuate from the room or rescue.
[0003]
The present inventor previously devised a door earthquake-resistant device having two rollers, vertical and horizontal, and commercialized it. This is the one described in Japanese Utility Model Publication No. 61-32072, “It consists of a main body with rollers and a roller receiving plate, and the main body with rollers can be attached to the upper corner of the locking side in the counter-opening direction of the door. A vertical roller rotatable in the vertical direction is provided on the main plate so as to protrude slightly upward, and a horizontal roller rotatable in the horizontal direction is provided so as to protrude slightly laterally. This is 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 is normally attached so that the roller and the receiving surface do not contact each other. .
[0004]
By attaching the door seismic device, it is possible to open the door with a force of 35 kg even when the door frame is displaced by about 20 mm. Even weak women, elderly people and children can open the door and evacuate. It became possible to do.
[0005]
Further, the inventor later devised and commercialized a door earthquake-resistant device described in Utility Model Registration No. 3040497 as an improvement of the invention. Compared with the above, it is common to use vertical rollers and horizontal rollers, but on the main plate of the main body to be attached to the back side of the door, an auxiliary plate part extended to the lower side and the anti-locking side is formed, and the front side The mounting sub-plate to be mounted on the door is sized correspondingly, and a screw cylinder with an adjustment nut is inserted between the front and back steel plates of the door to accommodate the thickness of the door, and the mounting screw is also attached to the expanded portion of the sub-plate. Is screwed.
[0006]
This is because recent doors in newly built apartment buildings, etc., use thin ones that are less than one-half the thickness of the conventional steel plates for the purpose of weight reduction. This is because the device cannot be installed with sufficient strength. With this improved type, the door seismic device can be firmly attached and the seismic function is strengthened even if the front and back steel plates of the door are thin or there is a difference in the door thickness.
[0007]
Further, the present inventor has determined that the upper end surface of the upper corner portion on the locking side in the counter-opening direction and the upper inner surface of the door frame corresponding thereto, and the side end surface of the same upper corner portion and the vertical saddle portion of the door frame facing it. In addition, they also created items that were worn face to face. This is because no rollers are used, and it is easy to mount on doors and door frames. When the doors are opened after an earthquake occurs, the doors and door frames that are in contact with each other are separated by a plate member with a low coefficient of friction. The doors can be easily opened because they slide against each other.
[0008]
[Problems to be solved by the invention]
However, after the previous Miyagi-oki earthquake (seismic intensity 5, magnitude 7.5) and the 1995 Great Hanshin Earthquake (seismic intensity 6, magnitude 7.2), the building itself became clearer. Even if it does not collapse, when a horizontal force is applied to the wall due to the earthquake, the door frame will deform in the left or right direction as a whole (see, for example, FIGS. 6 and 7), and the door vertical frame Local deformation (see FIG. 8) occurs in which the vicinity of the intermediate position is locally deformed.
[0009]
That is, a case where force is applied to the door frame due to an earthquake will be described first with reference to FIG. 6 showing an embodiment of the present invention. When force is applied to the door frame 1 from left to right, the door frame 1 is The collar part 1b is deformed from a state drawn with a two-dot chain line to a state drawn with a solid line, and the upper collar part 1a of the door frame 1 is located near the upper corner (the upper left corner in the figure) of the door 2 on the locking side. Press down with a strong force to prevent the door 2 from being opened.
[0010]
Next, referring to FIG. 7 showing an embodiment of the present invention, when a force is applied to the door frame 1 from the right to the left, the vertical flange 1b of the door frame 1 is drawn from a state drawn by a two-dot chain line. The state is changed to a state drawn with a solid line, and the upper end of the side end face 14 of the door 2 is strongly hit against the upper end of the side end face 13 of the vertical flange 1b of the door frame 1, and the door cannot be opened again.
[0011]
Further, referring to FIG. 8 showing an embodiment of the present invention, when a lateral force is locally applied to the vertical flange 1b of the door frame 1, the vertical flange 1b of the door frame 1 has two points. It is deformed locally from the state drawn with a chain line, as drawn with a solid line, and the vicinity of the intermediate position of the side end face 13 of the vertical flange 1b of the door frame 1 strongly hits the vicinity of the intermediate position of the side end face 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, within 8 mm for vertical deformation and within 500 N (about 50 kg) for 4 mm upper frame. (Current Ministry of Economy, Trade and Industry, Industrial Technology Institute). However, it can be said that the countermeasure against the case where the vertical flange portion of the door frame 1 is locally deformed cannot be sufficiently dealt with by simply attaching the door earthquake-proof device to the upper corner of the door and the door frame.
[0013]
Therefore, it can be retrofitted to off-the-shelf doors, especially high-rise apartment buildings, and even when the door frame is not only in-plane deformation but also local deformation in the event of an earthquake, it is compared to elderly people, women, children, etc. The emergence of seismic devices for doors that allow the doors to be opened even with low power.
[0014]
Further, as is apparent from the fact that dust tends to accumulate on the upper end surface of the upper corner portion of the door, dust tends to adhere to the surface of the low friction coefficient material mounted on the upper end surface of the upper corner portion of the door. Therefore, when trying to open the door after the earthquake, the friction is increased, and it is expected that the door cannot be opened easily.
[0015]
The present invention was developed as a result of various studies in order to meet the above-mentioned demands. The object of the present invention is to be easily attached to a ready-made door and door frame. An object of the present invention is to provide a device capable of opening a door even with a relatively weak force in response to not only in-plane deformation but also local deformation.
[0016]
[Means for Solving the Problems]
The earthquake door opening device using the roller and the low friction plate according to the present invention,
It is composed of a main body portion 3 with a roller, a roller receiving plate 4, and low friction plates 5 and 6 for in-plane deformation and pair / local deformation,
The roller-equipped main body 3 is pivotally supported on a mounting main plate 7 that can be attached to the lock-side upper corner of the door indoor surface 2a or the outdoor surface 2b so that the roller 9 that can be rotated by the horizontal shaft 10 protrudes slightly upward. The attachment sub-plate 8 that can be attached to the door chamber outer surface 2b or the upper corner of the indoor surface 2a and the mounting main plate 7 can be fixed by connecting with the attachment bolt 11 with the door 2 interposed therebetween,
The roller receiving plate 4 has a lower surface as the roller receiving surface 12 and can be attached to the upper collar portion 1a of the door frame 1 so as to correspond to the roller 9 of the main body portion 3 with a roller and not to contact the roller 9 in normal times. ,
On the other hand, the low friction plates 5, 6 are thin plate-like pieces of lubricating material with a small coefficient of friction, and for side-to-plane deformation, the side end face 14 of the door 2 near the position where the roller-equipped main body 3 is mounted and the side end face 14 thereof. Between the side end face 13 of the vertical flange 1b of the opposing door frame 1 and as a counter-partial deformation, the vicinity of the intermediate height position of the side end face 13 of the vertical flange 1b of the door frame 1 and the door 2 facing it. Each side end face 14 is provided so as to be able to be mounted in a face-to-face manner.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
In the above-described configuration, the roller-equipped main body 3, the roller receiving plate 4 and the like need to have strength that does not cause deformation or damage even when subjected to an impact or vibration load caused by an earthquake. The material is made of metal. For example, the mounting main plate 7 and the shaft support portion 15 are made of zinc die casting, the roller 9 and its horizontal shaft 10 are made of stainless steel, the mounting sub-plate 8 is made of iron, and the roller receiving plate 4 is made of zinc die casting. However, it is not limited to this.
[0018]
The door 2 for installing the earthquake door opening device is made of a steel plate (steel plate), and the entire door or at least a part from the periphery is formed of a double-sided steel plate. The door frame 1 is also a steel plate.
[0019]
If the door 2 is of an outward opening type, the installation position of the earthquake door opening device is such that the door main body 7 having the roller-attached main body 3 at the upper corner of the locking side of the door interior surface 2a is sandwiched between the door 2 and the door chamber. The attachment sub-plate 8 may be attached to the outer surface 2b by connecting with a plurality of attachment bolts 11. If the door 2 is of the inner opening type, a plurality of mounting main plates 7 provided with the roller-attached main body portion 3 at the locking corner of the door chamber outer surface 2b and a plurality of mounting sub-plates 8 on the door indoor surface 2a across the door 2 are provided. What is necessary is just to connect and attach with the attachment bolt 11 of a 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 protrudes slightly above the upper edge of the mounting main plate 7. I'm allowed. The mounting main plate 7 is formed with round holes 16 for inserting mounting bolts on both sides and the bottom.
[0021]
The mounting sub-plate 8 is preferably provided with a threaded cylinder 17 projecting from each side of the rear surface and near the lower portion to which each mounting bolt 11 from the mounting main plate 7 can be screwed. Each screw cylinder 17 is inserted between the front and back steel plates of the door 2 at the time of installation, and can be formed slightly shorter than the ready-made door with the smallest distance between the front and back steel plates. That's fine. The mounting sub-plate 8 is preferably formed with a plurality of mounting screw holes 18 near the periphery.
[0022]
When the door frame 1 is deformed due to the occurrence of an earthquake, the roller receiving plate 4 receives the roller 9 in contact with the upper end of the roller 9. It is desirable to form the inclined surface in advance on the surface 12.
[0023]
The inclined surface of the roller receiving surface 12 is preferably formed from the center to both sides so that the roller receiving plate 4 can be mounted in accordance with the difference between the left and right opening of the door 2 (for example, FIG. (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 attached to the door 2 and the door frame 1, the lateral width of the roller 9, etc. A range of about 100 is preferable.
[0024]
The low-friction plates 5 and 6 are thin plate-like pieces of lubricating material having a small friction coefficient, but need to have a strength that can withstand the deformation pressing force from the door 2 and the door frame 1 when an earthquake occurs. . For example, ceramics and engineer plastics, especially resins such as zirconia ceramics and Teflon (registered trademark), have a low coefficient of friction, high strength, and particularly high toughness. What is hard to produce is good. However, the present invention is not limited to the above, and other ceramics, plastics, or a spray forming material in which a lubricant is impregnated may be used as long as it has strength with a low friction coefficient.
[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 is usually about 35 to 40 mm in length, about 25 to 30 mm in width, and about 0.3 mm in thickness. It should be about 5 to 0.8 mm. This is mounted on the door 2 and the door frame 1 facing each other. The mounting means is fixed firmly 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 in the vicinity of the position where the body portion 3 with a roller is attached to the door 2 and the vertical flange portion of the door frame 1 facing it. It is desirable to use the side end surface 13 of 1b and the side end surface 13 near the middle position of the vertical flange 1b of the door frame 1 and the side end surface 14 of the door 2 facing the side end surface 13 for deformation of the door frame 1.
[0027]
Next, the installation method of the earthquake door opening device according to the present invention is as follows. First, the roller receiving plate 4 is attached to the inside of the corner of the upper collar 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 lock side of the door interior surface 2a (see, for example, FIGS. 2 and 3). For this purpose, the roller 9 is fixed between the roller receiving surface 12 and the roller 9 in advance. Corresponding to the round hole 16 for inserting the bolt formed in the mounting main plate 7 and positioned so as not to come into contact with the gap s, for example, about 1.0 to 2.0 mm. The steel plate of the door interior surface 2a is perforated.
[0029]
The attachment sub-plate 8 is attached to the position closer to the upper corner of the locking side on the door chamber outer surface 2b (see, for example, FIGS. 1 and 3), but also formed on the steel plate of the door inner surface 2a on the steel plate of the door outer surface 2b. 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 each screw cylinder 17 from each through-hole of the door chamber outer surface 2b, and the mounting main plate 7 is applied to the indoor surface 2a so as to sandwich the door 2. The bolt 11 is screwed into the screw cylinder 17 through a round hole formed in the steel plate from each bolt insertion round hole 16 of the mounting main plate 7 and tightened to fix the main plate portion 3 with a roller (for example, the above figure). 3).
[0031]
Further, if a plurality of mounting screw holes 18 are formed near the periphery of the mounting sub-plate 8, the mounting screws 20 are screwed onto the reinforcing plates 19 provided in the front and back steel plates of the door 2. Keep it.
[0032]
On the other hand, for the low friction plates 5 and 6 for in-plane deformation, near the position where the roller-attached main body 3 is mounted on the side end surface 14 of the door 2 and the side end surface of the vertical flange 1b of the door frame 1 13 for the position opposite to it, and for counter-partial deformation, in the vicinity of the center position on the side end face 13 of the vertical flange 1b of the door frame 1 and on the side end face 14 of the door 2 facing the position. In a face-to-face configuration, each is firmly fixed with an adhesive, an adhesive, or the like (for example, see FIG. 1 above).
[0033]
And the effect | action when the earthquake-proof apparatus for doors which concerns on this invention is attached to the door 2 and the door frame 1 is as follows.
[0034]
When an earthquake occurs, if a lateral force is applied to the wall due to the vibration or impact of the earthquake, the door frame 1 is deformed from the state drawn with a two-dot chain line in FIG. 6 to the state drawn with a solid line, The upper collar 1a of the door frame 1 attempts to deform by pressing 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, the roller 9 of the roller-equipped main body 3 on the door 2 side is supported in contact with the roller receiving plate 4 of the upper flange portion 1a of the door frame 1 for the deformation in the vertical direction. Deformation of the frame 1 in the vertical direction is suppressed by the door 2.
[0035]
Further, when a force is applied to the door frame 1 from the left to the right due to the earthquake, as shown in FIG. 6, the vertical flange 1b of the door frame 1 is deformed from a state drawn with a two-dot chain line to a state drawn with a solid line. The upper collar 1a of the door frame 1 pushes down the vicinity of the upper corner (left upper corner in the drawing) 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 abuts on the roller receiving surface 12 of the roller receiving plate 4 of the upper collar portion 1a of the door frame 1, as described above, the line contact does not occur. Since the roller 9 itself is rotatable, the door can be opened by pushing the door 2 with a relatively close force.
[0036]
In the above case, if the roller receiving surface 12 has an inclined surface as shown in FIG. 4, even when the door frame 1 or the door 2 is deformed by an earthquake, the roller receiving surface 12 and the roller 9 As shown in FIG. 5, the contact with the outer peripheral surface is not a point contact but a line contact after the earthquake. Therefore, the load applied between the two 12 and 9 is not linearly distributed but linearly and the roller 9 can be rotated smoothly, so that the door 2 can be opened more easily.
[0037]
Further, when a force is applied to the door frame 1 from right to left, as shown in FIG. 7, the vertical flange 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, and the door 2 The upper end of the side end surface 14 of the door frame 1 strongly hits the upper end of the side end surface 13 of the vertical flange 1b of the door frame 1. However, in the present invention, since the thin plate-like low friction plates 5 and 5 provided in the respective portions are in contact with each other, they can be slid with a relatively small force, and by pushing the door 2 with a relatively close force, the door Can be opened.
[0038]
In addition, when a lateral force is locally applied to the vertical flange 1b of the door frame 1, the vertical flange 1b of the door frame 1 is drawn with a solid line from the state drawn with a two-dot chain line as shown in FIG. As described above, the deformation is locally performed so that the vicinity of the intermediate position of the side end face 13 of the vertical flange 1 b of the door frame 1 strongly hits the vicinity of the intermediate position of the side end face 14 of the door 2. However, in the present invention, since the thin plate-like low friction plates 6 and 6 provided at the respective portions are in contact with each other, they can be slid with a relatively small force, and by pushing the door 2 with a relatively close force. You can open the door.
[0039]
In the above case, the roller receiving plate 4 and the roller-equipped main body portion 3 are attached without attaching the low friction plate between the upper flange portion 1a of the door frame 1 and the upper corner portion of the door 2. It is. Therefore, unlike the case where a low friction plate is used for the portion where it is difficult to clean the upper end surface of the door 2, dust accumulates on the upper surface of the low friction plate and the low friction coefficient cannot be maintained. No worries that will be difficult to open.
[0040]
As described above, in the earthquake door opening device using the low friction plate and the roller according to the present invention, even if a force from either the left or right direction is applied, each corresponds to in-plane deformation or local deformation and acts synergistically. The door can be opened easily.
[0041]
【Example】
FIG. 1 to FIG. 8 show an embodiment of an earthquake door opening device using a low friction plate and a roller according to the present invention, and a main body portion 3 with a roller, a roller receiving plate 4, and a counter-in-plane deformation device. And low friction plates 5 and 6 for local deformation.
[0042]
The attachment main plate 7 of the roller-equipped main body 3 is attached to the upper corner of the door interior surface 2a on the locking side, since the door 2 is open outside here. Here, the mounting main plate 7 is made of zinc die cast, and has two shafts parallel to the vertical direction 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 supporting portion 15 is integrally formed, and the stainless steel roller 9 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 from the upper edge of the mounting main plate 7 by about 4.0 mm. And is pivotally supported by a horizontal shaft 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 so that the mounting bolts 11 can be inserted into three positions near the lower part and the upper part. A 9 mm bolt insertion round hole 16 is formed.
[0044]
The attachment sub-plate 8 of the main body 3 is attached to the upper corner of the door chamber outer surface 2b on the locking side because the door 2 is opened outward as described above. Here, the mounting sub-plate 8 is made of an iron plate and has a rectangular shape with 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 having female screw holes made of iron and having a valley diameter of about 8.0 mm are projected and fixed by caulking at three positions where the mounting bolts 11 can be screwed.
[0045]
The length of the screw cylinder 17 is about 34.5 mm here. In addition, nine mounting screw holes 18 are formed at positions near the peripheral portion of the mounting sub-plate 8 here.
[0046]
The roller receiving plate 4 has a lower surface as the roller receiving surface 12 and is attached to the lower side surface of the upper corner portion of the door frame 1 with a screw 21, here made of zinc die-cast, about 50.0 mm wide, about 45 mm long. It has a rectangular shape with a maximum thickness of about 6.0 mm. Here, countersunk holes for screws are formed in two places.
[0047]
Further, the roller receiving surface 12 is formed on an inclined surface in which the central portion in the left-right direction is thin so that it is not a point contact but a line contact when it contacts the upper end of the roller 9 when an earthquake occurs. . The degree of inclination is such that the central part 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 an inclined surface on one side corresponding to the position of the roller 9 attached to the door 2.
[0048]
The installation of the seismic door opening device by this low friction plate and roller is because the door 2 here is a left-handed open door with a knob or a lever on the left side when viewed from the outside of the door. An attachment 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 an attachment sub-plate 8 is attached to the steel plate on the door interior surface 2a. The mounting is performed by screwing three mounting bolts 16 from the mounting main plate 7 side into the three screw cylinders 17 on the mounting sub plate 7 side, respectively, with the door 2 interposed therebetween, and tightening and fixing. Nine mounting screws 20 are screwed and fixed.
[0049]
Further, since each of the low friction plates 5 and 6 has the left hand of the door 2 as described above, the plate 5 for in-plane deformation is the upper corner on the left side of the door 2 when viewed from the outdoor side. The side end face 14 on the side and the side end face 13 of the vertical flange 1b of the door frame 1 corresponding thereto are adhered in a face-to-face manner. Further, the plate 6 for deforming the local part is in the vicinity of an intermediate position of the left side end face 14 of the door 2, here, above and below the lock 22, and on the left side end face of the vertical flange 1 b of the door frame 1 corresponding thereto. Each pair is bonded in a face-to-face manner at 13 positions.
[0050]
Since the action of the embodiment of the earthquake door opening device is apparent from the description of the embodiment of the invention described above, it is omitted here to avoid duplication. The test result when this is attached to the door is described below.
[0051]
We requested the Better Living Foundation (Tokyo, Chiyoda-ku, Nibancho 4-5, Mutual Nichochi Building, 3rd floor) to conduct this main performance test based on the Japanese Industrial Standards, and the earthquake caused by the low friction plate and roller according to the present invention A performance test was conducted on August 29, 2002 with the door opening device attached to the door.
[0052]
The test method is the same as that received in the applicant's previous earthquake proofing device for doors (utility model registration No. 3040497), but for the single door set, local deformation based on Japanese Industrial Standards This is a deformation following performance test method including
[0053]
As a result, the force required to open the door was 340NT for the previous door seismic device when the regulation requirement value was 500NT, but this time the required opening force was 340NT. It became clear that it was able to reduce significantly rather than the thing (The test report of local deformation No.022440, the test report of in-plane deformation No.022950).
[0054]
【The invention's effect】
As is apparent 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 the ready-made door and the door frame, and if this is installed, the in-plane deformation of the door frame due to the earthquake is possible. In addition to local deformation, even a relatively weak person can open the door to escape and rescue.
[0055]
In other words, conventional devices of this type cannot be attached to ready-made doors, can cope with in-plane deformation due to an earthquake, but cannot cope with local deformation, and dust adheres to the upper surface of the door, which is difficult to clean. In some cases, the friction increased and the desired effect could not be exhibited.
[0056]
In contrast, in the seismic door opening device of the present invention, a) by skillful combination of roller and low friction plate, it can be easily attached to a ready-made door and door frame, and if this is attached, When an in-plane deformation that causes the door frame to deform in the left-right direction as a whole due to an earthquake occurs, the main body with rollers attached to the upper corner of the door and door frame, and the surface attached to the side end face in a face-to-face manner The low friction plate for inward deformation corresponds synergistically so that even a person with relatively weak force can easily open the door.
[0057]
B) In the above case, a roller and a roller receiving plate are attached between the door and the upper corner of the door frame, and a low friction plate is not attached to the upper end surface of the door. For this reason, the dust collected on the low friction plate at the upper end of the door, which is difficult to clean, can be prevented from slipping and becoming difficult to open.
[0058]
C) In addition, if the roller receiving surface of the roller receiving plate on the door frame side has an inclined surface in advance, contact between the roller and the roller receiving surface when the door or door frame is deformed by an earthquake It can be maintained in line contact rather than contact. For this reason, the load applied between the two can be dispersed instead of a single point, and the roller can be rotated smoothly, so that the door can be opened more easily.
[0059]
D) In addition, when the door frame is locally deformed due to an earthquake, in most cases, the deformation near the intermediate position in the height direction of the vertical frame part of the door frame is large, and the door is caught by the vertical frame part. Although it cannot be opened, in the present invention, a low-friction plate for local deformation is attached in a face-to-face manner in the vicinity of the intermediate position of the vertical flange portion of the door frame and the side end face of the door. Therefore, it becomes easy to open the door by sliding with the low friction plate for local deformation in the contact state in that case, and even a relatively weak person can easily open and escape and rescue be able to.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a door to which an embodiment of an earthquake door opening device using a roller and a low friction plate according to the present invention is attached.
FIG. 2 is a front view from the room side showing a main part of an embodiment of an earthquake door opening device 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 earthquake door opening device 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 a 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 where the door frame is subjected to a left-to-right force and is deformed in the 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 to cause in-plane deformation.
FIG. 8 is a front view from the outdoor side showing a state in which a local force from the side is applied to the door frame and the local deformation is caused.
[Explanation of symbols]
1-door frame 1a-upper flange portion 1b-vertical flange portion 2-door 2a-interior surface 2b-outdoor surface portion 3-main body with roller 4-roller receiving plate 5-low friction plate 6-low friction plate 7-mounting main 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- Reinforcing plate 20-Mounting screw 21-Mounting screw 22-Lock s-Gap

Claims (2)

It is composed of a main body portion 3 with a roller, a roller receiving plate 4, and low friction plates 5 and 6 for in-plane deformation and pair / local deformation,
The roller-equipped main body 3 is pivotally supported on a mounting main plate 7 that can be attached to the lock-side upper corner of the door indoor surface 2a or the outdoor surface 2b so that the roller 9 that can be rotated by the horizontal shaft 10 protrudes slightly upward. The attachment sub-plate 8 that can be attached to the door chamber outer surface 2b or the upper corner of the indoor surface 2a and the mounting main plate 7 can be fixed by connecting with the attachment bolt 11 with the door 2 interposed therebetween,
The roller receiving plate 4 has a lower surface as the roller receiving surface 12 and can be attached to the upper collar portion 1a of the door frame 1 so as to correspond to the roller 9 of the main body portion 3 with a roller and not to contact the roller 9 in normal times. ,
On the other hand, the low friction plates 5 and 6 are thin plate-like lubricating material pieces having a small coefficient of friction, and for the in-plane deformation, the side end face 14 of the door 2 near the position where the roller main body 3 is mounted and the side end face 14 thereof. Between the side end face 13 of the vertical flange 1b of the door frame 1 facing and for the deformation of the part / local part, the vicinity of the intermediate height position of the side end face 13 of the vertical flange 1b of the door frame 1 and the door 2 facing it. A seismic door opening device comprising a roller and a low friction plate, which can be mounted on the side end face 14 in a face-to-face manner. The roller receiving surface 12 of the roller support plate 4, so that contact with the earthquake after roller 9 and the roller receiving face 12 is line contact, to form previously a roller receiving face 12 to the inclined surface so as to correspond to the time of deformation, wherein An earthquake door opening device comprising the roller according to item 1 and a low friction plate.

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