JP2003049588A - Earthquake resistant door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an earthquake resistant door capable of being easily applied to an existing door as well as to a new door and being reliably opened at an earthquake. SOLUTION: The door is formed of both a door main body 11 rotatable on the axis of rotation of a hinge 15 and a frame body 13 surrounding the circumference of the door main body 11 when the door main body 11 is closed. A member 21 formed of a low-friction member and provided with a circular cross section protruded toward the frame body 13 is provided in a plane which intersects the axis of rotation at right angles for a side surface of the door main body 11 located on the opposite side to the hinge and facing the frame body 13.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a seismic door. More specifically, the present invention is a door that includes a door body that is rotatable about a pivot axis of a hinge and a frame body that surrounds the periphery of the door body when the door body is closed. Even if the hinge is deformed and the door body is tilted or the frame is deformed, the door can be opened and earthquake countermeasures have been taken so that people inside the house can safely go out. Regarding the door.

[0002]

2. Description of the Related Art A hinge supporting a door body may be deformed due to an earthquake or the like, and a frame of the door may be distorted so that the door body cannot be rotated around the hinge to be opened. In this case, there is a problem that a person who is inside the house partitioned by the door cannot get out.

As such measures, various earthquake-resistant doors have been proposed which can be opened even when a large force is applied due to an earthquake or the like, or which can be moved out of the house by some method. There is.

In such a door body as a normal door,
Open an opening that allows people to enter and exit, and provide a small door at the opening, and usually open and close the large door body together with the small door, but in the event of an earthquake, open the small door and go out. It has been proposed (see, for example, Japanese Utility Model Laid-Open No. 59-17992, Japanese Patent Laid-Open No. 9-53372, Japanese Patent Laid-Open No. 10-280939, etc.).

Further, the size of the door main body that opens and closes in the frame is made smaller than the size of a normal door main body, and a large gap is formed between the door main body and the frame, so that the door main body is slightly deformed. It has been proposed that the door can be opened and closed.

Furthermore, various proposals have been made to provide a member which deforms when a strong force is applied to the door body so that deformation of the door due to an earthquake can be absorbed by this deforming member (Actual Publication 57-57). No. 140592, No. Sho 61-6519
No. 0, JP-A-9-13831, JP-A 9-1
89174, JP 2000-17904 A, etc.).

Various proposals have also been made to provide a roller at a position facing the frame of the door body and guide the door body by the roller (for example, Japanese Utility Model Publication No. 57-29790 and Japanese Utility Model Publication 58-58). 27476, JP-A-10-82.
252, JP-A-11-13358, and JP-A-11-210340).

Further, various proposals have also been made to make the surfaces of the door body and the frame facing each other to be tapered surfaces (for example, Japanese Utility Model Laid-Open No. 55-113481 and Japanese Utility Model Laid-Open No. 56-20868).
No. 57, No. 57-876876, No. 60
-195488, JP-A-8-199925, JP-A-8-333963, and JP-A-8-338.
180, JP 9-317340, and JP 2
000-145320, JP 2000-1927.
No. 48).

[0009]

As described above, various proposals have been made in the past, but when any of them is applied to an existing door or a new door, There are various problems.

That is, it is very difficult to apply a small door provided in the door body to an existing door, and it can be applied only to a new door. Further, even if it is applied to a new door, it is often not preferable to provide a small door in the door from the viewpoint of crime prevention and aesthetics in a general residence.

In the case where the size of the door main body is smaller than usual and a large gap is formed between the door main body and the frame body, there is a large gap between them, which causes a problem in crime prevention against picking and the like. If so, there is a problem that the sealing property is poor and the outside air enters through the gap. Further, when it is applied to an existing one in order to make the size of the door body smaller than usual, it is necessary to replace the frame body and the door body, which is not practical. Furthermore, if the door frame buckles or is deformed beyond the gap, it does not function or cannot be dealt with.

In addition, it is very difficult to apply a member which is deformed by a strong force to the door body, and it is very difficult to apply it to an existing door, and the member which is deformed in this way requires special consideration. Otherwise, the deformed door body will not open in the frame.

Further, in the case where the roller is provided on the surface of the door body facing the frame, it is very difficult to attach the roller when applied to the existing door. Also, in the case where such a new door is attached to the door, it is sufficient that the roller portion conveniently hits the frame when the door is deformed, but the desired effect cannot be achieved unless it hits well. In addition, in the normal state, the presence of the roller often gives an unnatural feeling. Further, the corners of the door are usually liable to cause dew condensation, and the metal around the unused rollers may be rusted and may not function when necessary.

Further, it is very difficult to form such a tapered surface in the existing door because it is very difficult to form a tapered surface between the door main body and the frame body. hard. Cylinder locks are often used, but when such a tapered surface is formed on a new door with a cylinder, the deformation of the frame causes a force in the direction of opening the door body. There is a problem that stress concentrates on the.

[0015]

SUMMARY OF THE INVENTION In view of the problems associated with the prior art as described above, the present invention can be easily applied to existing doors and new doors, and can be opened reliably even during an earthquake. It provides a seismic resistant door.

[0016]

SUMMARY OF THE INVENTION In the present invention, it is an object of the present invention to provide a door body which is rotatable about a pivot axis of a hinge and a frame body which surrounds the door body when the door body is closed. And a side surface of the door body opposite to the hinge and facing the frame body is made of a low-friction member, and is directed toward the frame body in a plane orthogonal to the rotation axis. This is achieved by a seismic resistant door characterized by having a protruding arcuate cross section.

In the present invention, because of the above-mentioned structure, the side surface of the door facing the frame has an arcuate cross section. For this reason, when the frame body is deformed when it is deformed due to an earthquake or the like, and even if the frame body and the door body contact each other, only a part of the arc-shaped cross section of the door body partially contacts the frame body. Yes, if you try to open and rotate the door body around the hinge, the tip of the arc-shaped cross section that makes partial contact will be the radius of the distance between the hinge and the tip of the arc-shaped section with the hinge as the center. Since it rotates while drawing a circular arc, it is possible to easily open the door body, which allows people inside to go outside and enter the house for rescue from the outside.

In the present invention, the arcuate cross section formed on the side surface of the door body is made of a low friction member such as silicone resin, fluororesin such as Teflon (registered trademark), or plastic such as polyamide. By doing so, the coefficient of friction, which is 0.5 to 0.6 when the contact surfaces are metal to metal, can be made extremely low (at the time of contact between Teflon (registered trademark) and steel, 0.04), Even when the door is deformed, the door body can be easily rotated by rotating around the hinge. In addition, the arcuate cross section is 0.5 to 3.0 mm from the side end faces of the front and back plates of the door body, preferably 2.0 in the new installation.
It is preferable to project about mm, and about 1.0 mm in the existing case.

As a method of making the side surface of the door body into an arcuate cross section, in the case of a new door, such an arcuate shape is formed on the side surface of the door body, more preferably on the upper and lower surfaces connected to the side surface. A cross section may be formed. Particularly when the present invention is applied to an existing door, it is preferable to attach a member having an arcuate cross section to the side surface of the door body. By attaching the separate member in this way, the effect of the present invention can be achieved even in the existing door.

Also, when the present invention is applied to a new door, like the existing door, a member having an arcuate cross section is provided on the side surface of the door body, more preferably on the upper and lower surfaces connected to the side surface. May be attached.

In the present invention, when a member having an arcuate cross section of the door main body is attached to the door main body, it may be fixed by a double-sided adhesive tape or an adhesive, or this member may be attached by a screw or the like to the side surface of the door main body. You may attach it to.

In this case, when a member having an arcuate cross section is attached to an existing door, the member having the arcuate cross section is formed into an L-shape, and two sides of the L-shape are a side surface and a side surface of the door body, respectively. It is preferable that the member is attached to the door main body so as to straddle the upper surface or the lower surface connected to the door main body because the attachment can be facilitated. The length of one side of the L-shaped member is 1
0 cm is enough. In this case, it is preferable that the portion of the L-shaped member located on the upper surface or the lower surface of the door body also has an arcuate cross section.

A member having an arcuate cross section is attached to the side surface and the upper and lower surfaces of the door body by forming an arcuate cross section on the side surface and the upper and lower surfaces of the door body or using a member having an L-shaped cross section. By doing so, even if the corner portion of the door body comes into contact with the frame body due to the deformation of the frame body, the door body can be surely opened.

Further, as described above in the present invention, the door main body is provided with the arcuate cross section, but in order to ensure that the arcuate cross section thus provided acts even when the door is deformed. It is preferable that a flat plate having an appropriate hardness is attached by a double-sided tape, an adhesive, a screw, or the like so that the flat plate comes into contact with the frame body when it is deformed to a portion facing the arcuate cross-section portion. The thickness of this flat plate is 0.3-0.
It is about 8 mm, preferably about 0.5 mm.

[0025]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings. FIG. 1A is a front view of the door as viewed from the outside.
As shown in FIG. 1 (a), the door 1 includes a door body 11 that is rotatable about the rotation axis of hinges 15 at two or three upper and lower positions.
And a frame 13 that surrounds the periphery of the door body 11 when the door body 11 is rotated around the hinge 15 and closed. The frame body 13 has a rectangular shape including a left and right vertical frame 13a and a horizontal frame 13b that connects the left and right vertical frames 13a with each other, and has a rectangular shape between the one vertical frame 13a and one side of the door body 11. Hinges 15 are provided in a straight line on the rotation axis. A knob or handle 17 for opening and closing the door body 11 and a keyhole 19 for locking the door are provided near the knob or handle 17.

Although the hinge 15 is provided on the right side of the door body 11 in FIG. 1A, the hinge 15 may be provided on the left side depending on the opening / closing direction. In this case, the knob or handle 17 and the keyhole 19 are provided on the right side of the door body 11.

When such a door receives an earthquake,
Since the frame body 13 having a square shape is not particularly strong, as shown in FIG. 1 (b) or FIG. 1 (c),
Distort and bend greatly with the building. On the other hand, the door body 1
1 retains its shape as a whole. Therefore, even if the door body 11 is to be rotated around the hinge 15 in the frame body 13 after the earthquake, the corners of the door body 11 away from the hinge 15 have the vertical frame 13a of the frame body 13 and the upper horizontal frame. 13b (in the case of FIG. 1B) or the lower horizontal frame 13b (in the case of FIG. 1C), the door body 11 cannot be opened.

The present invention addresses such a case, and as is clear from FIGS. 1 (b) and 1 (c), the contact portion between the door body 11 and the frame 13 is the door. Body 1
Attention is paid to what happens on the side surface of the first side away from the hinge 15 and the upper surface or the lower surface of the door body 11.

FIG. 2 is a sectional view taken along a plane orthogonal to the rotation axis of the hinge 15 when the present invention is applied to a metal door, that is, a sectional view taken along the line AA of FIG.
In FIG. 2A, the door body 11 is made of steel, and the case where the door body 11 is newly provided is shown. In this case, the door main body 11 has a member 21 having an arcuate cross section 21a protruding toward the frame body 13 on the side surface facing the frame body 13 away from the hinge 15 (FIG. 1). Two faces 21 on the side of the arc-shaped cross section 21a of the member 21
Grooves 21c and 21c extending in the length direction (direction orthogonal to the paper surface of FIG. 2A) are formed in b and 21b. The front and back plates 11a and 11b of the door body 11 are end faces 11c on the side surface side,
11d is bent inward, and the end faces 11c and 11d are engaged with the grooves 21c and 21c in the length direction of the member 21. In this way, the member 21 is engaged with the steel frame forming the door body 11, and is fixed to the door body 11 by a double-sided adhesive tape or an adhesive as required.

The member 21 having this arcuate cross section preferably extends from the upper end to the lower end of the side surface of the door. Furthermore,
A member 21 having an arcuate cross section is attached to the upper surface of the door body 11 and the lower surface of the door body 11. The member 21 having an arcuate cross section has a U-shape as a whole along the thickness of the door body 11, and has a side surface end portion on the upper surface of the door body 11, a side surface separated from the hinge 15, and a side surface on the lower surface. It covers the side edges. In addition, in the case where the door body is not newly installed and is existing, the member 21 having an arcuate cross section may be an L-shaped member having a side length of about 10 cm.

This member 21 is made of a low friction member such as a silicone resin, a fluororesin such as Teflon (registered trademark), or a plastic such as polyamide, and the surface thereof faces from the front side to the back side of the door body 11. The central portion thereof has an arc-shaped cross section 21a protruding like a mountain. That is, the central portion of the arc-shaped cross section of the member 21 is the side surface end faces 11c and 11d of the front and back plate portions 11a and 11b of the door body 11.
0.5 to 3.0 mm, preferably about 2 mm
It projects to the side.

Further, the frame body 13 is made of plastic or metal and has a thickness of 0.3 to 0.8 mm, preferably about 0.5 mm, which is a thin plate-like member 31 facing the arc-shaped cross section 21a of the member 21. The members are attached with an adhesive or a double-sided adhesive tape.

FIG. 2B shows a case where the present invention is applied to the door body 11 made of aluminum. Essentially, FIG.
A member 21 having an arc-shaped cross section 21a made of a silicone resin, a fluororesin such as Teflon (registered trademark), or polyamide, which is similar to that shown in (a), is attached to the door body 11 with a double-sided adhesive tape or adhesive. It is fixed by adhesion. Further, if necessary, as shown in FIG.
It may be screwed on.

In the above-mentioned two examples, the door main body 11 is made of metal, and the member having the arc-shaped cross section according to the present invention is newly attached. When attaching a member having an arcuate surface, the surface of the door body 11 on the side opposite to the hinge 15 is usually flat, so that it may be attached to this portion with an adhesive or a double-sided adhesive tape. For existing doors, the door body 1
Since it is difficult to make a large gap between the frame 1 and the frame 13, the member 21
The height of the arc-shaped cross section 21a and the thickness of the flat plate 31 are set to be smaller than the above values. In this case, particularly when attaching to an existing door, a member having an L-shaped cross section is prepared as the member 21 having the arc-shaped cross section, and one L-shaped surface of this member is hung on the upper surface or the lower surface of the door, It may be fixed with an adhesive or a screw so that the other side contacts the side.

FIG. 3 (a) shows a case where the present invention is applied to a wooden door main body 11, which is a new one, and has two longitudinally engaged engagements on the end face 11e side of the door main body 11. Groove 11f
Is formed on the member 21 having an arcuate cross section, the protrusion 21c extending in the longitudinal direction and engaging with the engaging groove 11f is provided, and the groove 11f and the protrusion 21c are engaged and fixed by an adhesive. If necessary, screws 21 may be further used to fix the member 21 having the arcuate cross section to the door body 11.

Further, FIG. 3B shows a case where the present invention is applied to an existing wooden door. In this case, the groove as shown in FIG. 11
Since it is difficult to form it in e, a double-sided adhesive tape is attached to the back surface of the member 21 having an arcuate cross section, whereby the member 21 having this arcuate cross section is attached to the side surface 11 of the door body 11.
It is better to attach it to e. The mode shown in FIG. 3B can be applied not only to the wooden door body described above, but also to a metal door body.

In these cases, the mounting location of the member having an arcuate cross section according to the present invention may be provided over the entire side surface of the door, but refer to FIG. 1 (b) and FIG. 1 (c). As described above, when the door main body 11 and the frame body 13 come into contact with each other when they are deformed by an earthquake or the like, they are near the corner upper end or lower end opposite to the hinge 15 of the door. It may be attached to a predetermined range of, for example, 10 cm from the portion, or to an upper or lower portion of about 10 cm from the corner to the hinge 15 side.

[0038]

According to the present invention, the member 21 having the above-mentioned configuration and having the arc-shaped cross section 21a is a low friction member. The door frame 13 is deformed in response to an earthquake or the like, or the mounting state of the hinge 15 is deformed, so that the door body 1
Even when 1 and the frame body 13 come into contact with each other, the member 21 having the arc-shaped cross section 21a and the frame body 13 are in a so-called point-contact state, and the friction coefficient between them is low.
Further, the contact position between the arcuate cross section 21a of the member 21 and the frame body 13 is located at a position apart from the hinge 15 (see FIG. 4). When a force is applied to the door body 11 to open the door, the arcuate cross section 21 a slides on the contact portion of the frame body 13 and the door body 11 can be opened around the hinge 15. In particular, the frame 13 is faced to a member having an arcuate cross section.
When the flat plate 31 is provided on the plate 31, the reduction in frictional resistance at the time of contact can be marked, and the plate can be opened more easily.

Further, according to the present invention, since the side surface of the door body 11 opposite to the hinge 15 and facing the frame body 13 is made of a low friction member and is provided with the arc-shaped cross section 21a, the existing door is also existing. It can be easily applied to other doors.

[Brief description of drawings]

FIG. 1 is a front view of a door as viewed from the outside, where (a) shows a normal state, and (b) and (c) show a state where an earthquake has occurred.

FIG. 2 is a cross-sectional view (A-A cross-sectional view of FIG. 1) when the present invention is applied to a metal door, in which (a) the door body is made of steel and (b) is made of aluminum.

FIG. 3 shows a case where the present invention is applied to a wooden door body,
(A) is the case of a new door, (b) is the case of an existing door.

FIG. 4 is a schematic plan view showing a relationship between an arcuate cross section, a frame and a hinge.

[Explanation of symbols]

1 door 11 Door body 13 frame 15 Hinge 21a circular cross section

Claims (4)

[Claims] 1. A door comprising a door body rotatable about a pivot axis of the hinge and a frame body surrounding the periphery of the door body when the door body is closed. The side surface located on the opposite side and facing the frame body is made of a low-friction member and has an arcuate cross section protruding toward the frame body in a plane orthogonal to the rotation axis. A characteristic earthquake resistant door. 2. The seismic resistant door according to claim 1, wherein a member having an arcuate cross section is attached to the side surface of the door body. 3. The member having the arc-shaped cross section is L-shaped, and the member is attached to the door body so as to straddle the side surface of the door body and an upper surface or a lower surface connected to the side surface. The earthquake-proof door according to claim 2, wherein 4. The earthquake-proof according to any one of claims 1 to 3, wherein a flat plate is attached to the frame portion facing the side surface of the door body having the arc-shaped cross section. door.