Earthquake-resistant door member and earthquake-resistant door equipped therewith

Abstract

To provide an earthquake-resistant door member used to prevent a door opening operation of a door body in a closed state from being hindered by deformation of a door frame body, and an earthquake-resistant door to which the earthquake-resistant door member is attached.SOLUTION: An earthquake-resistant door component is made of metal or ceramic, includes a first surface 20 that abuts against a door frame and a second surface 10 on the opposite side, and has a tapered portion formed so that a distance between the first surface 20 and the second surface 10 continuously decreases from a maximum thickness to a minimum thickness in the short direction. At least a rear portion 21 of the first surface at or near the maximum plate thickness portion is subjected to a surface roughening process S, and a low-friction layer C is formed on the second surface 10.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a member for a seismic door used to prevent the opening operation of a door body in a closed state from being hindered due to deformation of a door frame body, and a seismic door to which this member for a seismic door is attached.

Background Art

[0002] FIG. 19(A) is an enlarged cross-sectional view of the door end portion of an existing right-opening door. Normally, a gap of 3 to 4 mm is provided between the left side surface 111 of the door body 110 and the inner side surface 121a of the left side frame body 121 facing it. As a result, the rear side edge portion 111a of the left side surface 111 of the door body that rotates with the maximum rotation radius Rmax can open and close without contacting the inner side surface 121a of the left side frame body.

[0003] However, as shown in FIG. 19(B), when an external pressure F equal to or greater than a specified value is applied to the door frame body 120 attached to the outer wall or inner wall of a building due to an earthquake or the like, and the door frame body 120 is deformed and the gap on the door end side is narrowed or eliminated, the inner side surface 121a of the left side frame body enters the inside of the maximum rotation locus Qmax drawn by the rear side edge portion 111a of the left side surface 111 of the door body, so that a situation where the door body 110 cannot be opened (hereinafter, this situation is referred to as an "abnormal situation") may occur.

[0004] In order to open the door body 110 in this abnormal situation, a force (compressive force) to push the door frame body 120 outward and a force (shearing force) to open the door body 110 forward are required. However, an external pressure F of about 100 to 200 kg is applied to the door frame body 120, and an opening force of about 200 to 300 kg is required to open the door body 110.

[0005] Such an abnormal situation must be avoided as much as possible because it hinders people living in an apartment with few evacuation exits, people working in an office building, people staying in a hotel, and people using the toilet or bathroom in a detached house from evacuating to the outside. Therefore, the inventors have proposed seismic doors described in Patent Documents 1 and 2.

[0006] The earthquake-resistant door (1) described in Patent Document 1 comprises a door body (11) rotatable about the rotation axis of a hinge (15), and a frame body (13) surrounding the periphery when the door body (11) is closed. A member (21) made of a low-friction material having an arcuate cross-section (21a) is attached to a side surface (11e) of the door body (11) located on the side opposite to the hinge (15) and facing the frame body (13).

[0007] According to the earthquake-resistant door (1) of Patent Document 1, even when an abnormal situation occurs in which the frame body (13) of the door is deformed due to an earthquake or the like, and the door body (11) in the closed state and the frame body (13) are in a state of pressing contact, the member (21) made of a low-friction material having an arcuate cross-section (21a) and the frame body (13) are in point contact or line contact, so that the door body (11) can be opened with a small force of 10 kg or less depending on the conditions.

[0008] The earthquake-resistant door described in Patent Document 2 comprises a door body (1) rotatable about the rotation axis of a hinge (4), and a frame body (2, 2') surrounding the periphery when the door body (1) is closed. A member (3) having an arcuate cross-section is attached to a side surface (2a) of the frame body (2). The surface of this arcuate cross-section extends from the front end surface of the frame body (2) toward the back side in a horizontal plane orthogonal to the rotation axis, and the central portion thereof is recessed in a concave shape with respect to the side surface (1c) of the door body (1).

[0009] According to the earthquake-resistant door of Patent Document 2, similar to the earthquake-resistant door of Patent Document 1, even when the door body (1) in the closed state and the frame body (2) are in a state of pressing contact during an abnormal situation, the door body (1) and the frame body (2) contact each other through the member (3) having an arcuate cross-section, so that the door body can move smoothly along the arcuate shape (the rotation locus of the door body) and can be opened and closed with a small force of 10 kg or less depending on the conditions.

Prior Art Documents

Patent Documents

[0010] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-49588 [Patent Document 2] Utility Model Registration Gazette No. 3167660 [Summary of the Invention] [Problems to be Solved by the Invention]

[0011] The earthquake-resistant doors described in Patent Documents 1 and 2 are very effective in avoiding situations where the door body cannot be opened and people cannot evacuate to the outside in abnormal situations such as earthquakes. However, problems that need to be improved have also become apparent in order to more reliably exhibit their functions and widely popularize earthquake-resistant door members and earthquake-resistant doors.

[0012] The products of the earthquake-resistant door members in Patent Documents 1 and 2 are formed from polycarbonate resin with excellent workability and impact resistance as the base material, and a low-friction coating of silicone-based resin is applied to the surface thereof, and they have sufficient strength and functions in normal handling and usage situations. However, since the earthquake-resistant door members are attached to the gap at the door tip part of the door, the dimensions in the thickness direction are limited, and they are in the form of thin plates with a maximum plate thickness of about 2 mm and a minimum plate thickness of about 0.3 mm for general-purpose products. When the base material is formed from a resin material due to its thinness, the mechanical strength and impact resistance are not necessarily sufficient as building members, and since baking painting cannot be performed, the surface hardness of the low-friction coating cannot be increased. Therefore, delicate handling is required as building members.

[0013] In addition, although the earthquake-resistant door members are expected to be used for more than 10 years at entrances and exits close to the outdoors, when further long-term use is required as building members, the durability and weather resistance of the resin material are not necessarily sufficient, and there may be a possibility of deterioration over time depending on the usage situation. If the mechanical strength and impact resistance of the base material decrease, there is a risk of deformation or breakage in abnormal situations where the door is pressed against with a large force, and if the low-friction coating on the surface deteriorates or peels off, there is a risk of an increase in the opening force for opening the door. In either case, it becomes difficult to fully perform the desired functions.

[0014] Conventional earthquake-resistant door components are not necessarily easy to handle or durable compared to the standards required for building materials and exterior fittings, so they require installation by a professional, and component replacement may become necessary after long-term use of 10 years or so. This has been cited as a reason why construction and real estate businesses have refrained from adopting them, making sales to general users and installation by users themselves difficult, and is a major obstacle to the widespread use of earthquake-resistant door components and earthquake-resistant doors.

[0015] Furthermore, in the earthquake-resistant doors of Patent Documents 1 and 2, the easiest way to attach earthquake-resistant door components is with double-sided adhesive tape or glue, which also allows for easy adjustment of the attachment position. However, experiments conducted by the inventors have revealed that during an emergency, depending on the periodic shaking of an earthquake and the state of pressure contact between the door body or door frame and the door, a shear force greater than expected acts on the surface fixed with double-sided adhesive tape, which is vulnerable to shear force, causing the earthquake-resistant door components to shift forward or backward from their intended attachment position, preventing them from fully performing their intended function.

[0016] In order to prevent malfunctions due to the falling off or misalignment of earthquake-resistant door components, methods have been devised in which earthquake-resistant door components are screwed to the door body or door frame, or in which protrusions are provided on the backside of the earthquake-resistant door component to engage with the door body or door frame. However, these methods require special processing to create screw holes or engagement grooves on the mounting surface of the door body or door frame.

[0017] The installation of earthquake-resistant door components requires fine-tuning the position of the arc shape to maximize functionality while adapting to differences in door dimensions and changes in fit over time. In addition to this process, drilling screw holes and engagement grooves into the metal door body and door frame while adjusting the positioning is difficult for ordinary businesses and users, and must be performed by trained professionals, resulting in high costs and a long construction period. This is a major obstacle to the widespread use of earthquake-resistant door components and earthquake-resistant doors that can perform more reliably.

[0018] The present invention has been made in view of the above problems, and as a building member, it has high base material strength, is easy to handle, can stably exhibit its function over a long period of time, and can be installed by general contractors and users without requiring special processing on existing doors, and aims to provide a seismic-resistant door member that can be expected to have wide spread and a seismic-resistant door equipped with the same. Also, it aims to provide a seismic-resistant door member and a seismic-resistant door equipped with the same that can prevent the door frame body from deforming during abnormal situations such as earthquakes and large external forces being applied, and also prevent it from deviating from a predetermined mounting position, and can open the door with a smaller opening force and more reliably exhibit its function.

Means for Solving the Problems

[0019] The present invention is a rectangular thin plate-shaped seismic-resistant door member that is attached to the door frame body to prevent the opening operation of the door body in the closed state from being hindered due to the deformation of the door frame body by an external force. It is formed of a metal material or a ceramic material, and has a first surface that abuts against a part of the door frame body and a second surface on the opposite side of the first surface. It has a tapered portion formed such that the distance between the first surface and the second surface that defines the plate thickness continuously decreases from the maximum thickness to the minimum thickness in the short side direction. When the door frame body deforms and comes into pressure contact with the opposing door body, in order to prevent it from deviating from a predetermined mounting position along the contact surface with the door frame body, surface unevenness processing is performed on at least the first surface at the maximum plate thickness portion or its vicinity. When in pressure contact, in order to reduce the opening force for rotating the door body to open the door, a low friction layer is formed on at least the second surface at the maximum plate thickness portion or its vicinity. It is a seismic-resistant door member.

[0020] In addition, the present invention is a rectangular thin plate-shaped seismic door member that is attached to the door body to prevent the opening operation of the door body in the closed state from being hindered by the deformation of the door frame body due to an external force. It is formed of a metal material or a ceramic material, and has a first surface that abuts against a part of the door body and a second surface on the opposite side of the first surface. It has a tapered portion formed such that the distance between the first surface and the second surface that defines the plate thickness continuously decreases from the maximum thickness to the minimum thickness in the short side direction. When the door frame body deforms and comes into pressure contact with the opposing door frame body, in order to prevent it from shifting from a predetermined mounting position along the contact surface with the door body, surface unevenness processing is performed on at least the first surface at the maximum plate thickness portion or in the vicinity thereof. When in pressure contact, in order to reduce the opening force for rotating the door body to open the door, a low friction layer is formed on at least the second surface at the maximum plate thickness portion or in the vicinity thereof. It is a seismic door member.

[0021] The above "continuously decreasing from the maximum thickness to the minimum thickness" means that it always tends to decrease without a change in the increasing or decreasing tendency between reaching the maximum thickness and the minimum thickness. For this reason, forms in which the plate thickness decreases linearly from the maximum thickness to the minimum thickness, forms in which it decreases curvilinearly, for example, forms in which it decreases along an arc-shaped curve, are all included in the form of "continuously decreasing from the maximum thickness to the minimum thickness".

[0022] In addition, the above "surface unevenness processing" is performed to generate a shear resistance (frictional force and / or latching force) sufficient for the seismic door member to remain at a predetermined mounting position without shifting back and forth along the contact surface with the door frame body or the door body even when a large external pressure is applied to the door frame body during an abnormal situation and it deforms, and the closed door body or the door frame body and the seismic door member are strongly pressed into contact and a large shear force acts on the seismic door member. The anchor effect due to the unevenness of hard metal or ceramics is exerted on the pressure contact surface, and a sufficient frictional force and latching force can be obtained.

[0023] Furthermore, when the door main body or the door frame body in a closed state during an abnormal situation and the seismic door member are pressed against each other with a large force, the "low friction layer" is formed to reduce the friction coefficient (static friction coefficient and kinetic friction coefficient) between the two, and to reduce the opening force for rotating the door main body to open the door. As a preferred embodiment, a baked layer containing a fluororesin is exemplified, which has excellent low friction performance, high abrasion resistance, and durability.

[0024] When the seismic door member shifts back and forth along the contact surface during an abnormal situation, it has been confirmed by the experiments of the present inventor that not only does the tapered portion shift back and forth, but also its shape itself is deformed. In order for the effect of the low friction layer on the second surface to be exerted, it is a prerequisite that the tapered portion maintains a predetermined shape and the seismic door member functions. Therefore, only when the effect of preventing displacement by the surface unevenness processing of the first surface is exerted and the tapered portion maintains a predetermined shape, can the effect of reducing the opening force by the low friction layer on the second surface be exerted. Due to the synergistic effect of this surface unevenness processing of the first surface and the low friction layer on the second surface, the function of the seismic door member is maximally exerted, and the situation where the opening operation of the door is hindered during an abnormal situation can be more reliably avoided.

Advantages of the Invention

[0025] According to the seismic door member of the present invention, it is excellent in handleability and durability as a building member, and can be attached to an existing door without requiring special processing. In addition, it can prevent displacement from a predetermined mounting position even when a large external force is applied, and the door can be opened with a smaller opening force. Due to these effects, it is possible to provide a seismic door that can more reliably avoid a situation where the opening operation of the door main body is hindered due to deformation of the door frame body during an earthquake or the like (particularly, a situation where the door main body cannot be opened). And with its wide spread, it is expected to contribute to saving lives, disaster prevention, and disaster reduction during an earthquake.

Brief Description of the Drawings

[0026]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

[0027]

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

[0028]

Figure 17

Figure 18

Figure 19

Mode for Carrying Out the Invention

[0029] Hereinafter, preferred embodiments of the present invention will be described based on FIGS. 1 to 18 on the premise of a right-opening door. The front-back direction, left-right direction, and up-down direction in the description are defined as the directions along the X, Y, and Z axes shown in each figure, respectively. Specifically, +X is the forward direction in which the door body 110 of the seismic door 100 opens, -X is the backward direction in which it closes, +Y is the right direction, -Y is the left direction, +Z is the upward direction, and -Z is the downward direction.

[0030] Also, for materials, structures, manufacturing methods, etc. for which descriptions are omitted, they can be regarded as the same or substantially the same as those known to those skilled in the art of the relevant technology. In each figure, the same reference numerals represent the same or equivalent components, and redundant descriptions are omitted. For easy understanding of the drawings, some structures such as airtight rubber and double-sided adhesive tape of the door stop are omitted in the illustration.

[0031] ≪First Embodiment≫ First, a member 1 for a seismic door according to a preferred first embodiment of the present invention and a seismic door 100 including the same will be described with reference to FIGS. 1 to 8. The member 1 for a seismic door is used by being attached to an existing right-opening or left-opening door. As shown in FIGS. 1(A), (B), 2, and 3, in an existing right-opening door, it is used by being attached to the inner side surface 121a of the left frame body 121 facing the left side surface 111 of the door body 110. The existing right-opening door to which the member 1 for a seismic door is attached is configured as the seismic door 100.

[0032] The vertical dimension (length L) of the member 1 for a seismic door is not particularly limited as long as the predetermined function of the present invention can be exhibited. In order to avoid the vicinity of the central portion where the key receiver is disposed, it is preferably less than 900 mm in consideration of the height of the doorknob. For the purpose of improving the efficiency of the attachment work to the door, about 100 to 600 mm that can be easily held with one hand is more preferable, and about 150 to 400 mm is even more preferable.

[0033] The arrangement and number of the members 1 for a seismic door are not particularly limited as long as the predetermined function of the present invention can be exhibited. Considering the in-plane deformation followability, it is preferably attached to both upper and lower ends of the inner side surface 121a, and considering the local deformation followability, it is preferably attached near the center of the inner side surface 121a. When a plurality are attached, it is preferably arranged substantially evenly. In the present embodiment, members 1 for a seismic door having a length L of about 200 mm are attached at a total of four locations at substantially equal intervals at both upper and lower ends of the inner side surface 121a and at both upper and lower locations sandwiching the key receiver of the doorknob.

[0034] In order to prevent the corner portion of the door body 110 from biting into the member 1 for a seismic door in the event of an abnormal situation, it is desirable to attach the member 1 for a seismic door attached to both upper and lower ends of the inner side surface 121a at a distance of 20 to 30 mm from the inner lower surface 123a of the upper frame body 123 and the inner upper surface 124a of the lower frame body 124.

[0035] The above-mentioned existing hinged door is a mass-produced product manufactured based on a predetermined standard, and the configurations of the door body 110, the door frame body 120, and the hinge portion 130 are the same as those found in mass-produced products. The standard size of the single-leaf door that is most popular as the entrance door of condominiums and buildings in Japan is that the effective opening dimension is width W800 mm × height H1900 or 2000 mm.

[0036] For example, the door body 110 is composed of front and rear panels and a framework (frame and mullion). As shown in FIGS. 1(A) and (B), a left side surface 111 of the door body is formed on the left side of the door body 110, a right side surface 112 of the door body is formed on the right side, an upper surface 113 of the door body is formed on the upper surface, and a lower surface 114 of the door body is formed on the lower surface, respectively.

[0037] The door frame body 120 is composed of a left frame body 121 and a right frame body 122 located on the left and right, and an upper frame body 123 and a lower frame body 124 located on the upper and lower. An inward side surface 121a facing the left side surface 111 of the door body is formed on the left frame body 121, an inward lower surface 123a is formed on the upper frame body 123, and an inward upper surface 124a is formed on the lower frame body 124, respectively.

[0038] The door body 110 is rotatably connected to the door frame body 120 via a hinge portion 130 screwed with screws between the right side surface 112 of the door body and the right frame body 122, with the central axis of the hinge portion 130 as the rotation axis.

[0039] 〔Configuration of the seismic-resistant door member 1〕 As shown in FIGS. 4(A), (B) and 5, the seismic-resistant door member 1 is a rectangular thin plate member with a horizontal cross-sectional shape approximating a wedge shape, including a right side surface 10 of the member, a left side surface 20 of the member, an upper surface 30 of the member, a lower surface 40 of the member, a front surface 50 of the member, and a rear surface 60 of the member. The horizontal cross-sectional shape of the right side surface 10 of the member presents an arc-shaped curve that bulges toward the left side (the left side surface 20 side of the member) as will be described later.

[0040] The front-to-back dimension (width W) of the seismic-resistant door member 1 is set based on the front-to-back dimensions (depth dimension) of the door frame body 120 and the door body 110 to which it is attached. If the rear end of the seismic-resistant door member presses against and digs into the left side surface of the door body when an abnormal situation occurs, it may conversely prevent the opening and closing of the door body. Therefore, it is desirable to set the width W of the seismic-resistant door member 1 to be the same as or slightly longer than the front-to-back dimension (the thickness of the door body 110) of the left side surface 111 of the door body. Specifically, it is desirable to set it within the range from the end of the bending R on the front surface of the left frame body 121 to the position of the door stop 121b at the rear of the left frame body. In the case of a standard product with a width W of 800 mm, the thickness of the door body is assumed to be in the range of 36 - 40 mm, and the depth to the door stop of the door frame body is assumed to be in the range of 40 - 44 mm.

[0041] The material forming the base material of the seismic-resistant door member is a metal material or a ceramic material excellent in mechanical strength and workability. As the metal material, a metal material capable of extrusion molding and having a Vickers hardness (HV) of 60 or more is preferable, and examples include aluminum alloys, steel, stainless steel, titanium alloys, magnesium alloys, etc. From the aspects of mechanical strength, workability, manufacturing cost, etc., aluminum alloys, steel, and stainless steel are preferable, and aluminum alloys are most preferable. Surface treatment such as anodizing may be performed. As the ceramic material, a ceramic material capable of extrusion molding and having high toughness is preferable, and examples include alumina, zirconia, silicon nitride, silicon carbide, etc. From the aspects of mechanical strength, toughness, workability, etc., alumina, zirconia, and silicon nitride are preferable, and zirconia is most preferable.

[0042] The seismic-resistant door member 1 is formed by extrusion molding of an aluminum alloy. The manufacturing method is preferably extrusion molding in terms of manufacturing cost and processing accuracy, but it may also be formed by cutting or polishing from a flat plate member, or may be formed by combining extrusion molding with cutting or polishing.

[0043] [Right side surface 10 of the member] The right side surface 10 of the member corresponds to the "second surface" in the claims. As shown in FIG. 3, when the earthquake-resistant door member 1 is attached to a door including a door body 110 and a door frame body 120, it forms a portion facing the left side surface 111 of the door body 110 in the closed state, and defines a plate thickness T as the distance from the left side surface 20 of the member.

[0044] The cross-sectional shape of the right side surface 10 of the member in the horizontal direction (short side direction) is an arc shape defined based on the maximum rotation locus Qmax drawn by the portion (hereinafter referred to as "door body maximum rotation radius portion 111a") of the door body 110 that rotates with the maximum rotation radius Rmax. More specifically, the earthquake-resistant door member 1 attached to the door frame body 120 is arranged on or outside the line of the maximum rotation locus Qmax, and the arc shape has a radius R10 equal to or greater than the maximum rotation radius Rmax and is formed as an arc shape that bulges toward the frame side (the left side surface of the member 20 side).

[0045] Since the earthquake-resistant door member 1 according to the present invention is assumed to be attached to an existing door (to enhance versatility), the door to be attached is exclusively a standardized mass-produced product, and the maximum rotation locus Qmax and the maximum rotation radius Rmax of the door body 110 also exist as standardized known data. Therefore, the arc shape can be set based on the standardized known maximum rotation locus Qmax and maximum rotation radius Rmax, and can be set as an arc drawn by a radius R10 equal to or greater than the maximum rotation radius Rmax with the rotation center of the existing door as the center point. In the most popular standard product with a width W of 800 mm, the maximum design rotation radius Rmax is 820 mm.

[0046] The rotation center of the opening door (door body 110) of the above-mentioned mass-produced product is generally offset forward with respect to the front panel of the door body 110. For this reason, in the seismic-resistant door member 1 having the arc shape set by the above method as the right side surface 10 of the member, the plate thickness T defined as the distance between the right side surface 10 of the member and the left side surface 20 of the member takes the maximum plate thickness Tmax at the rear surface 60 of the member and the minimum plate thickness Tmin at the front surface 50 of the member. The plate thickness T continuously and gradually decreases (gradually decreases) in the short side direction from the rear surface 60 of the member toward the front surface 50 of the member. The maximum plate thickness Tmax may be set to a value smaller than the clearance between the door body 110 and the left frame body 121 during normal times. Although the design clearance is 4 mm, it varies due to the attachment state of the door body to the door frame body, the aging change of the installation, etc., so generally the clearance is assumed to be in the range of about 2 to 4 mm.

[0047] In the seismic-resistant door 100 to which the seismic-resistant door member 1 having the right side surface 10 of the arc shape set by the above method and having the width W set from the end of the bend R on the front surface of the left frame body 121 to the position of the door stop 121b behind the left frame body 121 is attached, as shown in FIG. 3, during normal times, a vicinity portion slightly on the front side of the rear end portion of the right side surface 10 of the member (the boundary portion with the rear surface 60 of the member, hereinafter referred to as "the rear end portion 10a of the right side surface of the member") is closest to the maximum rotation radius portion 111a of the door body located at the rear side edge portion of the left side surface 111 of the door body. In the seismic-resistant door 100 to which the seismic-resistant door member 1 having the width W set to be the same as the length of the left side surface 111 of the door body (the thickness of the door body 110) is attached, during normal times, the rear end portion 10a of the right side surface of the member is closest to the maximum rotation radius portion 111a of the door body. On the other hand, the front end portion of the right side surface 10 of the member is most separated from the left side surface 111 of the door body. For this reason, as shown in FIG. 6, during an abnormal situation, it is assumed that the rear end portion 10a of the right side surface of the member or a vicinity portion thereof contacts the maximum rotation radius portion 111a of the door body, and the contact at this time is in a press-contact state accompanied by an external force F1.

[0048] On the right side surface 10 of the member, even when it comes into contact (pressure contact) with the left side surface 111 of the door body with a large force when an abnormal situation occurs, a low friction layer with a small friction coefficient is formed (region C) so that the door body 110 can be rotated with an opening force as small as possible to enable an opening operation. It is difficult to specify the static friction coefficient between region C and the left side surface 111 (maximum rotation radius part 111a) in an abnormal situation because the surface properties of the left side surface 111 are unspecified and it is in a state of being pressure contacted by a large external force. However, since its value is understood to be proportional to the friction coefficient of region C, the smaller the friction coefficient (static friction coefficient and dynamic friction coefficient) of region C, the more preferable.

[0049] As a method for measuring the friction coefficient, for example, an unpainted and smooth steel (polished material), or a flat mating material formed of steel with a coating for a steel door on its upper surface, or a flat mating material formed of the same material as the earthquake-resistant door member with a low friction layer formed on its upper surface is placed on a horizontal test table, and a flat test piece formed of the same material as the earthquake-resistant door member with a low friction layer formed on its lower surface is moved while applying a predetermined load thereon for measurement. A method conforming to JIS K7125 is exemplified. The static friction coefficient of the low friction layer surface is preferably 0.20 or less, more preferably 0.15 or less, and even more preferably 0.10 or less.

[0050] As the low friction layer, from the viewpoints of low friction performance, durability, scratch resistance, etc., a baked layer containing a solid lubricant, a hard coat layer containing an inorganic oxide component with a low friction coefficient, a diamond-like carbon or ceramic vapor deposition layer with a low friction coefficient, and a surface modified layer in which a solid lubricant is diffused and penetrated are preferably exemplified.

[0051] Specifically, a baked layer containing a solid lubricant such as a fluororesin, a molybdenum compound, and graphite is exemplified. Two or more of these solid lubricants may be contained. The solid lubricants are preferably a fluororesin and a molybdenum compound from the viewpoints of low friction performance, durability, etc., and the fluororesin is most preferable. Details of the fluororesin etc. will be described later in the specific examples.

[0052] The baking layer is formed by coating the right side surface 10 of the member with a liquid or powder coating composition containing a solid lubricant, a binder resin, etc., drying it, and then performing heat treatment to cure it. A baking layer with high surface hardness, excellent scratch resistance, and durability can be obtained by baking paint. In order to improve the adhesion to the baking layer, the base material may be subjected to surface treatment such as blasting and underlayer formation. The thickness of the baking layer is preferably in the range of 5 to 100 μm, more preferably in the range of 7.5 to 75 μm, and even more preferably in the range of 10 to 50 μm, considering low friction performance, durability, peel resistance, etc. The manufacturing methods such as other compounding components, coating methods, and heat treatment conditions are not limited as long as a baking layer with desired properties can be obtained.

[0053] In addition, a hard coat layer containing inorganic oxide components such as silica (SiO2), alumina (Al2O3), and zirconia (ZrO2) is exemplified. The inorganic oxide is a main constituent for the hard coat layer to function, and it may be in the form of a siloxane bond (-Si-O-Si-) or a metaloxane bond (-M-O-M-) contained in a polyorganosiloxane or metaloxane structure, or in the form of fine particles of an inorganic oxide contained in a resin composition such as an acrylic type. From the viewpoints of surface hardness, low friction performance, cost, etc., silica and alumina components are preferable as the inorganic oxide component, and the silica component is most preferable.

[0054] The hard coat layer is formed by coating the right side surface 10 of the member with a coating composition containing an oligomer obtained by reacting a metal alkoxide such as silicon alkoxide or aluminum as a raw material, or a coating composition containing fine particles of an inorganic oxide and monomers or oligomers of a resin component, drying it, and then curing it by ultraviolet irradiation or heat treatment. The thickness of the hard coat layer is preferably in the range of 0.5 to 30 μm, more preferably in the range of 1 to 15 μm, considering low friction performance, durability, peel resistance, etc. The manufacturing methods such as other compounding components, coating methods, and curing conditions are not limited as long as a hard coat layer with desired properties can be obtained.

[0055] Furthermore, examples of low-friction deposition layers (deposited layers) formed by depositing nitride-based ceramics such as diamond-like carbon (DLC), titanium carbonitride (TiCN), and chromium nitride (CrN), and carbide-based ceramics such as titanium carbide (TiC) are given. DLC and TiCN are preferred from the viewpoints of low-friction performance, durability, etc., and DLC is most preferred. DLC is an amorphous hard film mainly composed of hydrocarbons or allotropes of carbon. Hydrogen-free DLC composed only of carbon may be used, or DLC added with metal elements or fluorine may also be used. DLC with a high hydrogen content (PLC) or graphite-like DLC (GLC) is more preferred because it is soft and has a low coefficient of friction. The phrase "mainly composed of DLC" means that it is substantially composed of DLC, and other trace components may be added or other underlayers or intermediate layers may be provided.

[0056] Examples of the method for forming the deposition layer (deposited layer) include physical vapor deposition (PVD) methods such as vacuum deposition, ion plating, and sputtering, and chemical vapor deposition (CVD) methods such as thermal CVD, plasma CVD, and atomic layer deposition (ALD). The substrate is installed in the processing chamber of these film-forming apparatuses so that a thin film is formed on the right side surface 10 of the member to form a film. In order to improve the adhesion to the deposition layer, the substrate may be subjected to pre-treatment such as shot peening and underlayer formation. The thickness of the deposition layer is preferably in the range of 0.5 to 10 μm, more preferably in the range of 1 to 5 μm, from the viewpoints of low-friction performance, durability, peel resistance, etc. The film-forming conditions such as the types and compositions of raw materials and carrier gases, the degree of vacuum, and the film-forming temperature are not limited as long as a deposition layer (deposited layer) with desired characteristics can be obtained.

[0057] In addition, a surface modification layer in which a solid lubricant such as molybdenum disulfide is diffusely penetrated is exemplified. As the solid lubricant, molybdenum disulfide is most preferable in terms of low friction performance, durability, etc. In shot blasting of molybdenum disulfide, molybdenum disulfide diffusely penetrates into the surface layer of a metal or the like, and molybdenum disulfide adheres to the surface to form a strong film. The thickness of the surface modification layer, including the thickness of the film formed on the surface, is preferably in the range of 1 to 20 μm, more preferably in the range of 2.5 to 10 μm, from the viewpoints of low friction performance, durability, peel resistance, etc. The particle size of molybdenum disulfide, injection speed, compounding components such as binder resin, etc. are not limited as long as a surface modification layer with desired characteristics can be obtained.

[0058] Note that the low friction layer in the present invention is not limited to the above content, and broadly includes a low friction layer capable of obtaining desired low friction performance. For example, a film of a solid lubricant or ceramics may be formed on the surface of the base material by thermal spraying, or a film may be formed by impregnating a solid lubricant into the surface of the base material made porous by surface treatment and curing it.

[0059] The position and range of the region C where the low friction layer is formed are determined so that the effect of preventing the hindrance of the opening operation of the door body 110 due to the pressure contact between the left side surface 111 of the door body and the right side surface 10 of the member caused by the external force F1 is more preferably brought about. In the present embodiment, the portion that abuts (presses) against the left side surface 111 of the door body with a high probability in the abnormal situation is understood as the rear portion of the right side surface 10 of the member having the maximum plate thickness Tmax that is closest to the left side surface 111 of the door body in the normal situation. Therefore, in order to reduce the friction coefficient between the two and suitably reduce the opening force in the abnormal situation, it is necessary to set the rear portion of the right side surface 10 of the member including the maximum plate thickness portion or the vicinity thereof where a large external force (vertical resistance) acts with a high probability as the region C.

[0060] The region C where the low-friction layer is formed may be the entire right side surface 10 of the member, and similar to the region S where the surface unevenness processing described later is performed, it may be in the form of a strip extending in the longitudinal direction that includes at least the maximum plate thickness portion or its vicinity and has a predetermined width. Examples of the width of the strip-shaped region C include a range of 1 / 20 to 1 / 4 of the width W of the member 1 for the seismic door. It may also be in a form where a plurality of linear or dot-shaped regions C are distributed. In the present embodiment, the region C is the entire right side surface 10 of the member 1 for the seismic door. Although it is understood that the effect of reducing the opening force is low when the region C is expanded to the front portion of the right side surface of the member, forming it on the entire side surface may simplify the coating and film-forming processes in some cases. Note that it is not desirable for the low-friction layer to largely wrap around the left side surface 20 of the member because it reduces the effects of the surface unevenness processing and the adhesive fixing material and inhibits the displacement prevention effect.

[0061] As shown in FIG. 6, when the rear end portion 10a of the right side surface of the member or its vicinity and the maximum rotation radius portion 111a of the door body are in a pressed contact state, a shearing force F2 along the inner side surface 121a of the left side frame body 121 to which the member 1 for the seismic door is attached due to an external force F1 acts on the member 1 for the seismic door. Under the above conditions, a shearing force F2 obtained by multiplying the external force F1 by the tangent value of the angle α formed between the tangent Ta of the maximum rotation locus Qmax at the maximum rotation radius portion 111a of the door body and the inner side surface 121a acts. This shearing force F2 acts to move the member 1 for the seismic door backward from its normal mounting position. In order to prevent the backward movement (displacement) of the member 1 for the seismic door, it is useful for a shearing resistance force (frictional force and / or latching force) equal to or greater than the shearing force F2 to act on the portion where the left side surface 20 of the member 1 for the seismic door and the inner side surface 121a are in contact. Details of the shearing resistance force will be described later with respect to the left side surface 20 of the member.

[0062] [Left side surface 20 of the member] The left side surface 20 of the member corresponds to the "first surface" in the claims. As shown in FIG. 3, when the seismic door member 1 is attached to the door frame body 120, a portion that abuts against the inner side surface 121a of the left side frame body 121 is formed. Therefore, the left side surface 20 of the member has a shape complementary to the inner side surface 121a, for example, a planar shape. Further, as shown in FIG. 4(B), at least on the left side surface 20 of the maximum plate thickness portion or its vicinity, surface unevenness processing is performed (region S) to prevent deviation from a predetermined mounting position along the contact surface. This "surface unevenness processing" can generate a shear resistance (frictional force and / or latching force) on the contact surface such that even when a large external pressure is applied to the door frame body 120 during an abnormal situation and it deforms, and the left side surface 111 of the closed door main body and the seismic door member 1 are strongly pressed together and a large shear force acts, the seismic door member 1 can stay at the predetermined mounting position without shifting backward along the inner side surface 121a.

[0063] Examples of the surface unevenness processing preferably include knurling, friction material coating, and blasting. Examples of the knurling pattern include diamond pattern or straight pattern, and examples of the processing method include cutting or rolling. In the straight pattern, it is preferable to cut in the longitudinal direction. In cutting, grooves are formed on the surface, and in rolling, grooves and protrusions are formed on the surface. The knurling of the ceramic material is preferably performed after the preliminary firing before the final firing. Examples of the friction material coating include coatings of metal, ceramic, or resin-based friction materials, and examples of the coating method include coating as a paint, adhesion / firing using an adhesive, or thermal spraying. Examples of the blasting include sand, shot, or grid blasting using a metal, ceramic, or resin-based abrasive.

[0064] These processing methods may be used in combination. For example, coating a friction material in the unevenness engraved by knurling, or roughening the surface of the unevenness by further blasting. Note that the surface unevenness processing in the present invention is not limited to the above methods, and broadly includes processing methods capable of forming a surface unevenness structure that can obtain a desired shear resistance. For example, a surface unevenness structure may be formed by precision cutting or transfer processing, electric discharge machining, laser machining, etching processing, or the like.

[0065] The position and range of the region S where the surface unevenness processing is performed are determined so that the effect of suppressing the movement (preventing displacement) of the seismic door member 1 caused by the external force F1 and the shear force F2 is more preferably brought about. In the present embodiment, the portion that abuts (presses) against the left side surface 111 of the door body with a high probability during an abnormal situation is understood as the rear portion of the right side surface 10 of the member having the maximum plate thickness Tmax that is closest to the left side surface 111 of the door body during normal times. On the other hand, the front portion of the right side surface 10 of the member having a large clearance from the left side surface 111 of the door body does not abut against the left side surface 111 of the door body even during an abnormal situation, and in some cases, it is also assumed that it will be separated from the left frame body 121 by an external force. Therefore, in order to preferably generate a large shear resistance (frictional force and / or latching force) that allows the seismic door member 1 to remain at a predetermined position without shifting with respect to the inner side surface 121a of the left frame body 121 during an abnormal situation, it is necessary to set the rear portion of the left side surface 20 of the member including the maximum plate thickness portion or the vicinity thereof where a large external force (vertical resistance) acts with a high probability during an abnormal situation (hereinafter referred to as the "rear portion 21 of the left side surface of the member") as the region S.

[0066] In this embodiment, the region S is in a strip shape with a predetermined front-rear dimension (width w). From the perspective of ease of processing and the effect of preventing displacement, the shape of the region S is preferably strip-shaped. The area of the region S is set in consideration of the balance among the displacement prevention effect, processing cost, mounting strength, etc. Even if the region for surface unevenness processing is expanded to the front part of the left side surface of the member 22, the degree of improvement in the displacement prevention effect is low, the processing cost increases, the region S' where the adhesive fixing material is provided becomes small, and the mounting strength decreases. The width w of the region S is preferably in the range of 1 / 20 to 1 / 4 of the width W of the member 1 for the seismic door, more preferably in the range of 1 / 15 to 1 / 5, and even more preferably in the range of 1 / 10 to 1 / 6.

[0067] Note that the form of the region S is not particularly limited as long as the predetermined functions of the present invention can be exhibited. It may be linear with a smaller width w, or may be in a range occupying 1 / 3 or more of the width W. It may also be in a form in which a plurality of regions S are spaced apart in the vertical direction and / or the horizontal direction (a form distributed linearly or in a dotted pattern). In the spaced-apart form, it may occupy a part or most of the rear part of the left side surface 21 of the member.

[0068] In order to preferably prevent the rearward movement (displacement) of the member 1 for the seismic door caused by the external force F1 and the shearing force F2, it is useful for a frictional force that can be a shearing resistance to act between the left side surface 20 of the member and the inner side surface 121a of the left side frame body. For this reason, it is useful for increasing the above-described displacement prevention effect to make the static friction coefficient μ between the rear part 21 (region S) of the left side surface of the member where the surface unevenness processing is performed and the inner side surface 121a as large as possible. Here, the vertical resistance acting between the region S and the inner side surface 121a is equivalent to the external force F1. Therefore, theoretically, under the above conditions, by making the static friction coefficient μ between the region S and the inner side surface 121a larger than the tangent value of the angle α, the above-described displacement prevention effect can be preferably obtained.

[0069] The static friction coefficient μ between the region S and the inner side surface 121a varies depending on the surface properties such as the materials, surface roughness, and painting conditions of the region S and the inner side surface 121a. In reality, since the surface properties of the inner side surface 121a are unspecified, it is difficult to specify the static friction coefficient μ in an abnormal situation where an external force of about 100 to 200 kg acts and presses. However, since it is understood that the numerical value μ is proportional to the friction coefficient of the region S, the larger the friction coefficient (static friction coefficient and dynamic friction coefficient) of the region S, the more preferable. As a method for measuring the friction coefficient, for example, an unpainted and smooth steel (polished material), or a flat mating material made of steel with a coating for a steel door on the upper surface, or a flat mating material made of the same material as the earthquake-resistant door member with surface unevenness processing on the upper surface is placed on a horizontal test table, and a flat test piece made of the same material as the earthquake-resistant door member with surface unevenness processing on the lower surface is moved while applying a predetermined load thereon for measurement. A method similar to JIS K7125 can be mentioned. The static friction coefficient is preferably 0.5 or more, more preferably 0.75 or more, and even more preferably 1.0 or more.

[0070] Here, in order to avoid a situation where the door body cannot be opened and people cannot evacuate to the outside in an abnormal situation such as an earthquake, the earthquake-resistant door member of the present invention is mainly assumed to be attached to the entrance doors of each household in a condominium or housing complex, the entrance doors to each office in an office building, the entrance doors to each guest room in a hotel or inn, and the fire doors on the evacuation routes of these buildings. Legally, fire resistance is required for these doors to prevent the spread of fire. The door frame body and the door body are made of steel (iron and steel), and their outer surfaces are painted. In a situation where an external force of about 100 to 200 kg acts on the door frame body in an abnormal situation and the left side surface 111 of the door body and the earthquake-resistant door member 1 are strongly pressed together, it is expected that the unevenness formed on the surface of the rear part 21 (region S) of the left side surface of the member will bite into the coating film of the inner side surface 121a of the left side frame body, and a latching force that can become a shear resistance due to the anchor effect can be expected.

[0071] Generally, the thickness of the rust-preventive coating film on the surface of the steel material is about 20 to 50 μm, and the thickness of the topcoat film is about 20 to 50 μm. In surface processing where uneven shapes such as knurling can be set, the uneven height is preferably 100 μm (0.1 mm) or more, more preferably 200 μm (0.2 mm) or more, and even more preferably 300 μm (0.3 mm) or more. The uneven shape is not particularly limited as long as a predetermined frictional force and latching force can be obtained, but from the perspective of the anchor effect, an acute angle with a tip angle of 90° or less that easily bites into the coating film is preferred.

[0072] In surface processing where uneven shapes such as friction material coating and blasting cannot be precisely set, as a method for measuring the surface shape, a method conforming to JIS B0601 2013 of calculating the arithmetic mean roughness (Ra), maximum height (Rz), and ten-point mean roughness (Rzjis) using a non-contact or contact surface roughness measuring instrument can be mentioned. Measure the surface roughness of the region S of the portion closest to the left side surface 111 of the door body during normal times. The ten-point mean roughness (Rzjis) is preferably 100 μm or more, more preferably 200 μm or more, and even more preferably 300 μm or more.

[0073] In knurling by cutting, blasting, etc., since the surface of the workpiece is cut, when the left side surface 20 of the member before processing is used as the reference surface, the surface unevenness of the region S after processing is formed in the negative direction. However, in the event of an abnormal situation, since the region S and the inner side surface 121a of the left frame body are strongly pressed against each other with an external force of about 100 to 200 kg, a desired frictional force and latching force can be expected due to the pressing of the surface unevenness of the region S and its biting into the painted surface. The position of the tip of the surface unevenness formed in the negative direction is preferably closer to the reference surface before processing. In the measurement of the above ten-point mean roughness (Rzjis), etc., it is preferably within -0.5 mm from the reference surface.

[0074] Also, in the case of knurling (partial unevenness) by forging, friction material coating, etc., since it protrudes from the surface of the workpiece, when the left side surface 20 of the member before processing is used as a reference surface, the surface unevenness of the area S after processing is formed in the positive direction. In addition, even in the processing method where the surface is shaved, the rear part 21 of the left side surface of the member may be formed thicker by the amount of shaving so that the surface unevenness is formed in the positive direction. The position of the tip of the surface unevenness formed in the positive direction preferably does not exceed the height of the adhesion fixing surface because the adhesion strength may decrease if it exceeds the adhesion fixing surface of the adhesion fixing material in the adjacent area S'. In the same measurement, it is preferably within +0.5 mm from the reference surface.

[0075] On the front part of the left side surface 20 of the member (hereinafter referred to as "the front part 22 of the left side surface of the member"), an adhesion fixing material such as a double-sided adhesive tape, a magnet sheet, an adhesive, etc. is laid or applied (area S') so as to function as an adhesion fixing surface with the inner side surface 121a of the left frame body 121. The type and structure of the adhesion fixing material are not particularly limited as long as the predetermined functions of the present invention can be exhibited. From the viewpoints of manufacturing cost and adhesive strength, a double-sided adhesive tape or an adhesive is preferable, and a detachable magnet sheet is preferable in consideration of repainting the door. As long as sufficient adhesion fixing force is obtained, the thinner the thickness, the better, and the higher the shear strength, the better. In addition, if the adhesion fixing material protrudes into the area S where the surface unevenness processing is performed, the shear resistance decreases and the displacement prevention effect is inhibited, which is not desirable.

[0076] Considering the thickness of the adhesion fixing material, the area S' may be a recessed part. For example, on a relatively thick part of the front part 22 of the left side surface of the member, a concave groove or a concave hole may be formed by the amount of shaving corresponding to the thickness of the adhesion fixing material, and the adhesion fixing material may be laid or joined there. Thereby, even if a double-sided adhesive tape or a magnet sheet having a predetermined thickness is interposed between the left side surface 20 of the member and the inner side surface 121a of the left frame body, the contact state between the rear part 21 (area S) of the left side surface of the member where the surface unevenness processing is performed and the inner side surface 121a can be preferably maintained.

[0077] 〔Effects of the First Embodiment〕 According to the above-mentioned earthquake-resistant door member 1, even in the event of an abnormal situation, as shown in FIG. 6, when the rear end portion 10a of the right side surface of the member or the vicinity thereof abuts against the maximum rotation radius portion 111a of the door body 110, deformation of the left frame body 121 and the like can be restricted, and it is possible to avoid the left frame body 121 from entering inside the maximum rotation locus Qmax of the door body 110, and it is possible to prevent the opening operation of the door body 110 from being hindered.

[0078] Even if a large shearing force F2 is applied to the earthquake-resistant door member 1 in an abnormal situation, a shearing resistance force (frictional force and / or latching force) equal to or greater than the shearing force F2 acts on the contact surface between the rear portion 21 of the left side surface 20 of the earthquake-resistant door member 1 and the inner side surface 121a of the left frame body, so that the earthquake-resistant door member 1 can stay at a predetermined mounting position without shifting backward along the inner side surface 121a of the left frame body. Further, due to the low friction layer formed on the entire surface of the right side surface 10 of the member, the friction coefficient at the contact surface with the door body 110 is significantly reduced, so that the effect of preventing the hindrance of the opening operation of the door body 110 is more surely exerted, and depending on the conditions, the door body 110 can be opened with a small opening force of 10 kg or less.

[0079] Furthermore, the earthquake-resistant door member 1 that can more surely exhibit its function can be attached using double-sided adhesive tape, a magnet sheet, etc. without performing special processing such as providing screw holes or engaging grooves in the left frame body 121 of the existing door, and it is possible for a general user to attach it without the need for a professional installer. The wide spread of the earthquake-resistant door member 1 can be promoted, and the doors of many mass-produced products can be configured as earthquake-resistant doors 100.

[0080] 〔Modification of the First Embodiment〕 In the earthquake-resistant door member 1 having the above-described configuration, the horizontal cross-sectional shape of the right side surface 10 of the member was an arc shape defined by the maximum rotation locus Qmax drawn by the maximum rotation radius Rmax of the door body 110, but it may be an earthquake-resistant door member 1' provided with a modified right side surface 10' of the following shape.

[0081] The earthquake-resistant door member 1' provided with the right side surface 10' of different forms is configured to be arranged outside the maximum rotation locus Qmax when the earthquake-resistant door 100 is configured, so as to prevent the hindrance of the opening operation of the door body 110 in the event of an abnormal situation. The form of the right side surface 10 of the member may be arbitrary as long as the effect is achieved. For example, as shown in FIG. 7, the right side surface 10' of the member may be formed such that its horizontal cross-sectional shape is a straight line (slant line) having a predetermined angle β with respect to the left side surface 20 of the member.

[0082] In the earthquake-resistant door member 1' provided with the right side surface 10' of the member, for the same reason as the angle α of the earthquake-resistant door member 1, by making the static friction coefficient μ between the rear part 21 of the left side surface of the member and the inward side surface 121a larger than the tangent value of the inclination angle β, the displacement prevention effect can be preferably obtained. The horizontal cross-sectional shape of the earthquake-resistant door member 1' is determined by setting the maximum plate thickness Tmax, the inclination angle β, and the width W to predetermined values. The maximum plate thickness Tmax is set to a value smaller than the clearance between the door body 110 and the left side frame 121 during normal times.

[0083] 〔Specific Example of the First Embodiment〕 FIG. 8 shows a specific example of the earthquake-resistant door member 1, which is a rectangular thin plate member made of aluminum alloy (A-6063) with a length L of 190 mm in the longitudinal direction and a width W of 43 mm in the short transverse direction. The short transverse side surface shape continuously and gradually decreases (tapers) from the maximum plate thickness of 2.15 mm to the minimum plate thickness of 0.3 mm from the rear surface 60 of the member toward the front surface 50 of the member, and its right side surface 10 of the member is formed in an arc shape with a radius of 826 mm that bulges toward the left side surface 20 of the member.

[0084] A low-friction coating layer containing a fluororesin is baked on the entire right side surface 10 of the member (Region C). The surface of the formed aluminum base material is degreased and cleaned, and a coating composition containing a fluororesin is spray-coated on the entire right side surface 10 of the member and dried. Then, it is placed in an electric furnace and heat-treated at 200 °C for 20 minutes in an air atmosphere to bake the low-friction thin film on the aluminum base material. Although omitted in the drawings, all surfaces other than the left side surface 20 of the member are coated. The composition of the coating composition is shown in Table 1 below. Each main agent is a liquid composition in which a solid lubricant, a binder resin, and an additive are dispersed or dissolved in an organic solvent. Six types of test samples with different coating compositions and coating layer thicknesses were prepared.

[0085]

Table 1

[0086] Examples of the type of fluororesin include polytetrafluoroethylene (PTFE), tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (PFA), tetrafluoroethylene-hexafluoropropylene copolymer (FEP), tetrafluoroethylene-ethylene copolymer (ETFE), etc. From the viewpoints of the low-friction performance, durability, heat resistance, etc. of the coating layer, PTFE, PFA, and FEP are preferred, and PTFE is most preferred. The molecular weight and particle size of these fluororesins are not limited as long as the coating composition and the coating layer can obtain predetermined characteristics. From the viewpoints of coating properties, low-friction performance, durability, etc. in the process, the blending amount of the fluororesin in the coating composition is preferably in the range of 5 to 25 wt%, and more preferably in the range of 7.5 to 20 wt%.

[0087] Examples of molybdenum compounds include inorganic molybdenum compounds such as molybdenum disulfide (MoS2) and molybdenum trisulfide (MoS3), and organic molybdenum compounds such as molybdenum dialkyldithiophosphate (MoDTP) and molybdenum dialkyldithiocarbamate (MoDTC). From the viewpoints of the low friction performance, durability, cost, etc. of the coating layer, inorganic molybdenum compounds are preferred, and molybdenum disulfide (MoS2) is most preferred. The particle diameter and particle thickness of these molybdenum compounds are not limited as long as the coating composition and the coating layer can obtain predetermined characteristics. The blending amount of the molybdenum compound in the coating composition is preferably in the range of 2.5 to 20 wt%, more preferably in the range of 5 to 15 wt%, from the viewpoints of coating properties, appearance of the coating layer, low friction performance, etc. in the process.

[0088] With reference to the in-plane deformation following test method for a single-leaf door set in JIS A1521 2018, the opening force of the test body (right-opening door) with each test sample attached was measured. The measurement of the periodic deformation of the frame and the pressing force was not performed. The sample was attached at a total of two locations, one near the upper end of the left frame and one near the left end of the upper frame, with double-sided adhesive tape. Masking tape was attached to the frame side to weaken the adhesive force between the frame and the sample. The test conditions were in-plane deformations of 1 / 120, 1 / 100, and 1 / 90 rad of the frame height. The results are shown in Table 2 below. According to the excellent housing component certification criteria (BL criteria) for earthquake-resistant doors, it is specified as a standard that it can be opened with an opening force of 500 N (50.99 kg) or less at an in-plane deformation of 1 / 120.

[0089]

Table 2

[0090] From the results in Table 2, it can be seen that the opening force is below the standard of 50 kg in all test samples. In particular, in the samples of Examples 1 to 6 with a low-friction coating layer containing a fluororesin such as PTFE baked on, the opening force is significantly below 50 kg. In Examples 4 and 6 containing molybdenum disulfide, the opening force decreases to about 10 kg at an in-plane deformation of 1 / 120, indicating that the door can be easily opened manually. Also, when visually checking the state of each test sample attached to the left frame body after the test, although rubbing marks were observed on the coating surface of the right side surface 10 of the member, despite weakening the adhesive force with masking tape, no deviation backward from the mounting position before the test was observed, nor was there any arc-shaped deformation of the right side surface 10 of the member.

[0091] In Example 7 where a coating agent containing a silicone resin was applied and baked on the entire right side surface 10 of the member, the opening force did not fall below 30 kg even when the composition and film thickness were adjusted. The low-friction coating layer of the silicone resin showed a high effect on the polycarbonate substrate, but not necessarily a sufficient effect on the aluminum substrate. The mechanism is not clear, but under the condition of pressing against the door body with a strong force, it is conceivable that the coating layer is partially compressed and broken on the hard aluminum substrate, exposing the substrate surface.

[0092] Also, on the rear part 21 of the left side surface of the member including the vicinity in front of the maximum plate thickness part, a belt-shaped plain pattern knurling extending in the longitudinal direction is provided (region S). Its width w is 4 mm, leaving an unprocessed part with a width of 1 mm toward the front from the rear end part (maximum plate thickness part) of the rear part 21 of the left side surface of the member, and it is provided in the range of 1 to 5 mm. Four grooves with a V-shaped cross-section and a depth of 0.5 mm are engraved by cutting at a pitch of 1 mm. The width w is preferably in the range of 2 to 11 mm, more preferably in the range of 3 to 9 mm, and even more preferably in the range of 4 to 7 mm.

[0093] On the front part of the left side of the member 22, an acrylic double-sided adhesive tape with a thickness of about 0.3 mm is laid on the entire surface as an adhesive fixing material (area S´). Thereby, it is adhesively fixed to a predetermined mounting position on the inner side surface 121a of the left frame body.

[0094] When using a magnetic sheet with thickness and hardness as the adhesive fixing material, a recessed portion may be formed in the front part of the left side of the member 22 and the magnetic sheet may be laid there. In FIG. 8, in the range of 7 to 22 mm from the rear end portion of the left side surface of the member toward the front, a strip-shaped concave groove with a width of 15 mm and a depth of 0.4 mm extending in the longitudinal direction is cut, and a strip-shaped magnetic sheet with a width of 15 mm and a thickness of about 0.5 mm is joined there with an adhesive. Examples of the magnetic sheet include resin sheets such as synthetic rubber containing magnet powder such as neodymium-based. An epoxy resin or the like containing magnet powder may be applied and cured to form a resin layer. In order to ensure strength, the wall thickness of the recessed portion is preferably 0.4 mm or more.

[0095] Even if the surface unevenness formed in the region S as in this specific example is a V-groove or the like formed by shaving the surface of the left side surface 20 of the member before processing, in the event of an abnormal situation, since the region S and the inner side surface 121a of the left frame body are strongly pressed against each other with an external force of about 100 to 200 kg, a desired frictional force or latching force can be expected due to the pressing contact between the tip of the surface unevenness and the inner side surface 121a and the biting into the painted surface.

[0096] When the corner portion of the rear end portion of the rear part of the left side surface of the member is shaved by the surface unevenness processing, in the event of an abnormal situation, the entire earthquake-resistant door member 1 may tilt with respect to the inner side surface 121a of the left frame body, and the arc shape of the right side surface 10 of the member facing the left side surface 111 of the door body may change. In order to prevent most or all of the corner portion from being shaved, it is preferable that the region S leaves an unprocessed portion with a gap of 0.5 to 2 mm in width from the rear end portion of the rear part of the left side surface of the member toward the front.

[0097] Next, using a test device capable of highly accurate measurement and periodic deformation of the frame, in accordance with the JIS standard test method, the opening force of the test specimen (right-opening door) with the sample of Example 6 attached was measured. The sample was attached at a total of six locations with double-sided adhesive tape: two locations near the upper and lower ends of the left frame, two locations near the center sandwiching the key receiver of the door knob, one location near the left end of the upper frame, and one location near the center. The test conditions were in-plane deformation of the frame height of 1 / 120, 1 / 100 rad, and local deformation of the door-end side frame of 8 mm. The measurement results of the opening force are shown in Table 3 below. According to the BL standard for seismic-resistant doors, it is the standard that the door can be opened with an opening force of 500 N (50.99 kg) or less even at a local deformation of 8 mm.

[0098]

Table 3

[0099] The opening force was below 500 N under any test conditions. Also, when the state of the sample attached to the left frame was visually inspected after the test, scratches were observed on the low-friction coating surface of the right side of the member 10 that was in pressure contact with the left side surface of the door body, but no deviation backward from the mounting position before the test was observed, nor was any arc-shaped deformation of the right side of the member 10 observed. In this test, periodic deformation (three stages up to the set in-plane displacement, and three in-plane displacements repeated at each stage) was applied to the door frame, and sufficient shear resistance (frictional force and / or latching force) against the resulting periodic shear force was generated at the contact surface between the inward side surface of the left frame and the left side surface 20 of the member due to the knurling provided on the rear part 21 of the left side surface of the member, and it is considered that the sample remained at the predetermined mounting position without shifting backward.

[0100] ≪Second Embodiment≫ Next, a member 1-2 for a seismic door according to a preferred second embodiment of the present invention and a seismic door 100-2 including the same will be described with reference to FIGS. 9 to 16. The member 1-2 for a seismic door is used by being attached to an existing right-opening or left-opening door. As shown in FIGS. 9(A), (B), 10, and 11, in an existing right-opening door, it is used by being attached to the left side surface 111 of the door body 110 and configured as the seismic door 100-2.

[0101] 〔Configuration of the member 1-2 for a seismic door〕 As shown in FIGS. 12(A), (B), and 13, the member 1-2 for a seismic door is a rectangular thin plate member having a horizontal (lateral direction) cross-sectional shape approximating a wedge shape, and includes a member right side surface 10-2, a member left side surface 20-2, a member upper surface 30-2, a member lower surface 40-2, a member front surface 50-2, and a member rear surface 60-2. The horizontal cross-sectional shape of the member left side surface 20-2 has an arc-shaped curve that bulges toward the frame side (the opposite side of the member right side surface 10-2), as will be described later.

[0102] The vertical dimensions (length L) of the member 1-2 for a seismic door, the positions and numbers attached to the left side surface 111 of the door body 110 are not limited as long as the predetermined functions of the present invention can be exhibited. Their specific dimensions, arrangements, and numbers are the same as those of the member 1 for a seismic door. In the present embodiment, members 1-2 for seismic doors having a length L of about 200 mm are attached at four locations at substantially equal intervals at two upper and lower ends of the left side surface 111 of the door body and at two upper and lower locations sandwiching the doorknob.

[0103] The front-rear dimensions (width W2) of the member 1-2 for a seismic door are set based on the front-rear dimensions (thickness dimensions) of the door body 110 to which it is attached. It is desirable to set it to be substantially the same as or slightly shorter than the thickness of the left side surface 111 of the door body. Specifically, it is desirable to set it to the length obtained by removing the R portions at both front and rear ends from the thickness of the left side surface 111 of the door body. In a standard product with a door width W of 800 mm, the thickness of the door body is assumed to be in the range of 36 to 40 mm.

[0104] In the earthquake-resistant door member 1-2, if the maximum rotation radius Rmax is the same, the thin earthquake-resistant door member 1-2 for doors can be attached to thick doors as well, and the product specifications can be reduced. For example, the rear end portion 10-2a of the earthquake-resistant door member 1-2 for a door thickness of 36 mm can be made to function by attaching it in accordance with the rear surface side end portion 111a of the left side surface of the door body with a door thickness of 40 mm. The material and manufacturing method for forming the earthquake-resistant door member 1-2 are the same as those of the earthquake-resistant door member 1.

[0105] [Right side surface 10-2 of the member] The right side surface 10-2 of the member corresponds to the "first surface" in the claims and forms a portion that abuts against the left side surface 111 of the door body when the earthquake-resistant door member 1-2 is attached to the door body 110 as shown in FIG. 11. Therefore, the right side surface 10-2 of the member has a shape complementary to the left side surface 111 of the door body, for example, a planar shape. Further, as shown in FIG. 12(A), at least the right side surface 10-2 of the maximum plate thickness portion or its vicinity is subjected to surface unevenness processing (region S2) in order to prevent displacement backward from the attachment position along the contact surface. The function and processing method of the surface unevenness processing are the same as those of the earthquake-resistant door member 1.

[0106] The position and range of the region S2 where the surface unevenness processing is performed are determined so that the effect of suppressing the movement (preventing displacement) of the earthquake-resistant door member 1-2 caused by an external force (the external force F1-2 and the shear force F2-2 described later) is more preferably achieved. In the present embodiment, among the earthquake-resistant door members 1-2 attached to the left side surface 111 of the door body, the portion that abuts (presses) against the inner side surface 121a of the left side frame body with a high probability during an abnormal situation is understood as the portion that is closest to the inner side surface 121a during normal times, that is, the front portion of the left side surface 20-2 of the member having the maximum plate thickness Tmax. Therefore, in order to preferably generate a large shear resistance (frictional force and / or latching force) that allows the earthquake-resistant door member 1-2 to remain at a predetermined attachment position without shifting forward with respect to the left side surface 111 of the door body during an abnormal situation, it is necessary to set the front portion of the right side surface 10-2 of the member (hereinafter referred to as the "front portion 11 of the right side surface of the member") including the maximum plate thickness portion or its vicinity where a large external force (vertical resistance) acts with a high probability during an abnormal situation as the region S2.

[0107] In this embodiment, it is in the form of a strip having a predetermined front-rear dimension (width w2). The form of the region S2 is preferably strip-shaped, and its width w2 is preferably in the range of 1 / 20 to 1 / 4 of the width W2 of the member 1-2 for the seismic door, more preferably in the range of 1 / 15 to 1 / 5, and even more preferably in the range of 1 / 10 to 1 / 6. Note that it may also be in the form of a linear shape with a smaller width w2, or it may be in a range where the width w2 is made larger and occupies more than 1 / 3 of the width W2. The plurality of regions S2 may be separated in the vertical direction and / or the horizontal direction.

[0108] Also, for the same reason as the member 1 for the seismic door, increasing the static friction coefficient μ2 between the front part of the right side surface of the member (region S2) where the surface unevenness processing is performed and the left side surface 111 of the door body as much as possible is useful for enhancing the effect of preventing the above displacement. Here, the vertical resistance acting between the region S2 and the left side surface 111 of the door body is equivalent to the external force F1-2 described later. Therefore, theoretically, under the above conditions, by making the static friction coefficient μ2 between the region S2 and the left side surface 111 of the door body larger than the tangent value of the angle α2 described later, the effect of preventing the above displacement can be preferably obtained. The larger the friction coefficient of the region S2, the more preferable.

[0109] The rear part of the right side surface 10-2 of the member (hereinafter referred to as "the rear part of the right side surface of the member 12") forms a region S2' where an adhesive fixing material such as a double-sided adhesive sheet is laid or applied in order to function as an adhesive fixing surface with the left side surface 111 of the door body. Its shape and structure are the same as those of the member 1 for the seismic door.

[0110] [Left side surface 20-2 of the member] The left side surface 20-2 of the member is a surface corresponding to the "second surface" in the claims. As shown in FIG. 11, when the member 1-2 for the seismic door is attached to the door body 110, it forms a portion facing the inner side surface 121a of the left side frame body in the closed state, and also defines a plate thickness T2 as the distance from the right side surface 10-2 of the member.

[0111] The horizontal (short side direction) cross-sectional shape of the left side surface 20-2 of the member presents an arc shape in which the plate thickness T2 continuously and gradually decreases (tapers) from the maximum plate thickness T2max to the minimum plate thickness T2min. In the present embodiment, it is an arc shape defined based on the maximum rotation locus Qmax drawn by the maximum rotation radius Rmax of the door body 110. More specifically, it has a radius R20-2 larger than the maximum rotation radius Rmax and is formed as an arc shape that bulges toward the frame side (the opposite side of the right side surface 10-2 of the member).

[0112] In the earthquake-resistant door member 1-2 having such an arc shape, when attached to the door body 110, the rotation radius Ra of the rotation locus Qa drawn by the portion having the minimum plate thickness T2min (the minimum plate thickness part), and the rotation radius Rb of the rotation locus Qb drawn by the portion having the maximum plate thickness T2max (the maximum plate thickness part) are both the radius R20-2.

[0113] The radius R20-2 (rotation radius Ra and rotation radius Rb) is set based on the known maximum rotation radius Rmax, and the horizontal cross-sectional shape of the left side surface 20-2 of the member is formed as an arc drawn by the radius R20-2 with the rotation center of the existing door as the center point. In the most popular standard product with a width W of 800 mm, the design maximum rotation radius Rmax is 820 mm.

[0114] As described above, the rotation center of the opening door (door body 110) of the above-mentioned mass-produced product is generally offset forward with respect to the front panel of the door body 110. Therefore, in the seismic-resistant door member 1-2 having the left side surface 20-2 of the arc-shaped member set by the above method, the portion having the maximum plate thickness T2max is formed in the vicinity of the front surface 50-2 of the member, including the front end portion 20-2b of the left side surface of the member and the front end portion 10-2b of the right side surface of the member, as shown in FIGS. 12(A) and 13. Further, the portion having the minimum plate thickness T2min is formed in the vicinity of the rear surface 60-2 of the member, including the rear end portion 20-2a of the left side surface of the member and the rear end portion 10-2a of the right side surface of the member, as shown in FIGS. 12(B) and 13. Therefore, the plate thickness T2 continuously decreases (gradually decreases) gradually in the short side direction from the front surface 50-2 of the member toward the rear surface 60-2 of the member. The maximum plate thickness T2max may be set to a value smaller than the clearance between the door body 110 and the left frame body 121 in the normal state.

[0115] When the front end portion 20-2b of the left side surface of the member presses against and bites into the inner side surface 121a of the left frame body when an abnormal situation occurs, the opening and closing of the door body 110 may be conversely hindered. Therefore, it is desirable to chamfer the corner portion of the front end portion 20-2b. In this embodiment, the chamfering is performed with R0.5. Further, since the seismic-resistant door member 1-2 is attached to the left side surface of the door body that opens and closes, it is preferable to chamfer the rear end portion 20-2a and the corner portions at the four corners in plan view in order to prevent people and objects from being injured or caught.

[0116] In the seismic-resistant door 100-2 to which the seismic-resistant door member 1-2 having the left side surface 20-2 of the arc shape set by the above method is attached, as shown in FIG. 11, in the normal state, the front end portion 20-2b of the left side surface of the member is closest to the inner side surface 121a of the left frame body, and the rear end portion 20-2a is the most separated. Therefore, in the abnormal situation, as shown in FIG. 14, it is assumed that the front end portion 20-2b of the left side surface of the member contacts the inner side surface 121a of the left frame body, and it is assumed that a pressure contact state with the external force F1-2 is formed.

[0117] On the left side surface 20-2 of the member, a low friction layer with a small friction coefficient is formed (region C2) so that the door body 110 can be opened with as small a force as possible even when it comes into pressure contact with the inner side surface 121a of the left frame body with a large force when an abnormal situation occurs. The type, thickness, film forming method, friction coefficient, and its measurement method, etc. of the low friction layer are the same as those of the member 1 for the seismic-resistant door.

[0118] The position and range of the region C2 where the low friction layer is formed are determined so that the effect of preventing the opening operation of the door body 110 due to the pressure contact between the left side surface 20-2 of the member and the inner side surface 121a of the left frame body caused by the external force F1-2 is more preferably achieved. In the present embodiment, among the members 1-2 for the seismic-resistant door attached to the left side surface 111 of the door body, the portion that comes into contact (pressure contact) with the inner side surface 121a of the door frame with a high probability during an abnormal situation is understood as the front end portion 20-2b of the left side surface of the member. Therefore, in order to reduce the friction coefficient between the two and preferably reduce the opening force during an abnormal situation, it is necessary to set the front portion of the left side surface 20-2 of the member including the maximum plate thickness portion or the vicinity thereof where a large external force (vertical resistance) acts with a high probability as the region C2.

[0119] In the present embodiment, the region C2 is the entire left side surface 20-2 of the member 1-2 for the seismic-resistant door. Similar to the region C of the member 1 for the seismic-resistant door, the region C2 may be the entire left side surface 20-2 of the member, or may be in the form of a strip extending in the longitudinal direction having a predetermined width including at least the maximum plate thickness portion or the vicinity thereof, similar to the region S2 where the aforementioned surface unevenness processing is performed.

[0120] When the front end portion 20-2b of the left side surface of the member and the inner side surface 121a of the left frame are in a pressure contact state, a shearing force F2-2 along the left side surface 111 of the door body to which the seismic door member 1-2 is attached acts on the seismic door member 1-2 due to the external force F1-2. Under the above conditions, a shearing force F2-2 obtained by multiplying the external force F1-2 by the tangent value of the angle α2 formed between the tangent Tb of the rotation locus Qb at the front end portion 20-2b and the left side surface 111 of the door body acts. This shearing force F2-2 acts so as to move the seismic door member 1-2 forward from its normal mounting position. In order to prevent the forward movement (displacement) of this seismic door member 1-2, it is useful for a shearing resistance force (frictional force and / or latching force) equal to or greater than the shearing force F2-2 to act on the portion where the right side surface 10-2 of the seismic door member 1-2 and the left side surface 111 of the door body are in contact. In order to generate a frictional force that can be a shearing resistance force, as described above, it is preferable to make the static friction coefficient μ2 between the region S2 on the right side surface 10-2 of the member and the left side surface 111 of the door body larger than the tangent value of the angle α2.

[0121] Also, in the event of an abnormal situation, when the seismic door member 1-2 and the left side surface 111 of the door body are in a strongly pressure contact state, it is expected that the irregularities formed on the surface of the front portion 11 (region S2) of the right side surface of the member will bite into the coating film on the left side surface 111 of the door body, and a latching force that can be a shearing resistance force can be expected due to the anchor effect. The friction coefficient, surface irregular shape, and their measurement methods are the same as those of the seismic door member 1.

[0122] 〔Effect of the Second Embodiment〕 According to the above seismic door member 1-2, even in the event of an abnormal situation, as shown in FIG. 14, when the front end portion 20-2b of the left side surface of the member or the vicinity thereof abuts against the inner side surface 121a of the left frame, the deformation of the left frame 121 and the like can be restricted, and it is possible to avoid the left frame 121 from entering inside the maximum rotation locus Qmax of the door body 110, and it is possible to prevent the opening operation of the door body 110 from being hindered.

[0123] Even when a large shearing force F2-2 is applied to the earthquake-resistant door member 1-2 in an abnormal situation, no additional shearing resistance (frictional force and / or latching force) acts on the contact surface between the front part of the right side surface 10-2 of the member and the left side surface 111 of the door body, and the door body can stay at a predetermined mounting position without shifting forward along the left side surface 111 of the door body. The low-friction layer formed on the entire left side surface 20-2 of the member significantly reduces the coefficient of friction on the contact surface with the inner side surface 121a of the left frame body, and the effect of preventing interference with the door-opening operation is more reliably exerted. In addition, the earthquake-resistant door member 1-2 that can more reliably perform its function can be easily installed by an ordinary person using double-sided adhesive tape, a magnet sheet, etc. without performing special processing such as providing screw holes on an existing door.

[0124] 〔Modification of the Second Embodiment〕 In the earthquake-resistant door member 1-2 having the above configuration, the horizontal cross-sectional shape of the left side surface 20-2 of the member was such that the rotation radius Ra of the rotation locus Qa drawn by the portion having the minimum plate thickness T2min (the rear end portion 20-2a of the left side surface of the member) and the rotation radius Rb of the rotation locus Qb drawn by the portion having the maximum plate thickness T2max (the front end portion 20-2b of the left side surface of the member) were circular arcs of the same value. However, it may be an earthquake-resistant door member 1-2' provided with a left side surface 20-2' of the following shape, which is modified to the following shape.

[0125] The earthquake-resistant door member 1-2' provided with a left side surface 20-2' of a different shape, when constructing the earthquake-resistant door 100-2, has a portion 20-2b' having the maximum plate thickness T2max' located on the front side (the open position side of the earthquake-resistant door 100-2) of the portion 20-2a' having the minimum plate thickness T2min', and the rotation locus Qb' drawn by the former portion is located outside (left side) of the rotation locus Qa' drawn by the latter portion. By configuring it in this way, it brings about the effect of preventing interference with the door-opening operation of the door body 110 in an abnormal situation. The form of the left side surface 20-2' of the member may be arbitrary as long as it brings about the said effect.

[0126] For example, as shown in Fig. 15, the left side surface 20-2' of the member may be formed such that its horizontal cross-sectional shape is a straight line (diagonal line) having a predetermined angle with respect to the right side surface 10-2' of the member. The portion having the maximum plate thickness T2max' is formed as the front end portion 20-2b' of the left side surface 20-2' of the member, and the portion having the minimum plate thickness T2min' is formed as the rear end portion 20-2a' of the left side surface 20-2' of the member. When the seismic door member 1-2' is attached to the door to form the seismic door 100-2', the rotation radius Rb' of the front end portion 20-2b' is set to be larger than the rotation radius Ra' of the rear end portion 20-2a' so that the rotation locus Qb' depicted by the front end portion 20-2b' is located outside the rotation locus Qa' depicted by the rear end portion 20-2a'.

[0127] Note that the portion having the maximum plate thickness T2max' does not necessarily have to be formed as the front end portion 20-2b' of the left side surface 20-2' of the member. For example, it may be closer to the central portion than the front end portion of the left side surface 20-2' of the member.

[0128] 〔Specific Example of the Second Embodiment〕 Fig. 16 shows a specific example of the seismic door member 1-2, which is a rectangular thin plate member made of an aluminum alloy (A-6063) with a length L of 190 mm in the longitudinal direction and a width W of 33 mm in the short transverse direction. The shape of its short transverse side surface gradually decreases continuously (gradually decreases) from a maximum plate thickness of 1.70 mm to a minimum plate thickness of 0.3 mm from the front surface 50-2 of the member toward the rear surface 60-2 of the member, and its left side surface 20-2 of the member is formed in an arc shape with a radius of 825 mm that bulges toward the opposite side of the right side surface 10-2 of the member.

[0129] A low-friction coating layer containing a fluorine-based resin is baked on the entire surface of the left side surface 20-2 of the member (region C2). The composition of the coating composition, the thickness of the low-friction coating layer, the film-forming method, etc. are the same as those of the seismic door member 1.

[0130] On the front part of the right side surface of the member including the thickest part of the plate thickness (region S2), a strip-shaped flat pattern surface rolling process extending in the longitudinal direction is performed. Its width w2 is 4 mm, leaving an unprocessed part with a width of 1 mm from the front end part (near the thickest part of the plate thickness) of the right side surface 10-2 of the member toward the rear, and it is performed in the range of 1 to 5 mm. Four grooves with a V-shaped cross-section and a depth of 0.5 mm are engraved by cutting at a pitch of 1 mm. The width w2 is preferably in the range of 2 to 10 mm, more preferably in the range of 3 to 8 mm, and even more preferably in the range of 4 to 6 mm. On the rear part of the right side surface of the member 12, a double-sided adhesive tape is laid on the entire surface (region S2´) and is adhesively fixed to a predetermined mounting position on the left side surface 111 of the door body.

[0131] For the same reasons as in the first embodiment, the surface unevenness formed in the region S2 can be expected to have a desired frictional force and latching force even if it is a V-shaped groove or the like in which the surface of the right side surface 10-2 of the member before processing is shaved. Also, so that the front end corner portion is not shaved by the surface unevenness processing, it is preferable that the region S2 leaves an unprocessed part with a gap of 0.5 to 2 mm in width from the front end part of the front part of the right side surface of the member toward the rear.

[0132] As described above, the preferred embodiments of the present invention have been described. However, the present invention is not limited to these embodiments, and various modifications are possible without departing from the gist thereof. Also, even if it is a configuration not directly described in the specification and drawings, as long as it exhibits the actions and effects of the present invention, it is within the scope of the technical idea of the present invention. Furthermore, as long as there is no contradiction in the purpose and configuration, etc., the embodiments described above and shown in each figure can also be combined with each other's description content.

[0133] For example, the clearance between the door body 110 and the left frame body 121 during normal times is generally assumed to be in the range of about 2 to 4 mm. However, in the case of a door that has been adjusted or processed to slightly widen this clearance, as shown in FIGS. 17 and 18, the seismic door member 1 of the first embodiment is attached to the inner side surface 121a of the left frame body, and the seismic door member 1-2 of the second embodiment is attached to the left side surface 111 of the door body to form the seismic door 200. When this seismic door 200 is in the closed state, low friction layers are formed on both of the two opposing surfaces, that is, the right side surface 10 of the seismic door member 1 and the left side surface 20-2 of the seismic door member 1-2. Therefore, the friction coefficient at the pressure contact surface during abnormal situations can be significantly reduced, and the opening force for opening the door body 110 can be significantly decreased.

[0134] Also, in the above-mentioned seismic door 200, the attachment position of the seismic door member 1 and the attachment position of the seismic door member 1-2 are aligned in the vertical direction. However, the attachment positions of both seismic door members may be shifted in the vertical direction. By shifting the attachment positions, when the door is in the closed state, the two seismic door members do not face each other and do not overlap. Therefore, even for the clearance at the door tip of a general existing door, both seismic door members can be attached simultaneously. By using different types of seismic door members in combination, it is possible to flexibly respond to the dimensions and installation conditions of existing doors, and a seismic door can be configured assuming larger and more complex in-plane deformations and local deformations.

Description of Reference Numerals

[0135] 1, 1´, 1-2, 1-2´… Seismic door member, 10, 10´… Right side of the member (area C), 10-2… Right side of the member, 10a, 10-2a… Rear end of the right side of the member, 10-2b… Front end of the right side of the member, 11… Front part of the right side of the member (area S2), 12… Rear part of the right side of the member (area S2´), 20… Left side of the member, 20-2, 20-2´… Left side of the member (area C2), 21… Rear part of the left side of the member (area S), 22… Front part of the left side of the member (area S´), 30, 30-2… Top of the member, 40, 40-2… Bottom of the member, 50, 50-2, 50-2´… Front of the member, 60, 60-2, 60-2´… Rear of the member, R10… Radius for setting the arc shape of the right side of the member, R20-2… Radius for setting the arc shape of the left side of the member, Ra, Ra´… Rotation radius of the minimum thickness part, Rb, Rb´… Rotation radius of the maximum thickness part, Qa, Qa´… Locus of the rotation radius of the minimum thickness part, Qb, Qb´… Locus of the rotation radius of the maximum thickness part.

[0136] 100, 100-2, 200… Seismic door, 110… Door body, 111… Left side of the door body, 111a… Maximum rotation radius part of the door body, 112… Right side of the door body, 113… Top of the door body, 114… Bottom of the door body, 120… Door frame body, 121… Left frame body, 121a… Inner side, 121b… Door stop, 121c… Airtight rubber, 122… Right frame body, 123… Upper frame body, 123a… Inner lower surface, 124… Lower frame body, 124a… Inner upper surface, 130… Hinge part, Rmax… Maximum rotation radius of the door body, Qmax… Locus of the maximum rotation radius.

Claims

1. A rectangular thin plate-shaped seismic door member attached to the door frame body for preventing the opening operation of the door body in the closed state from being hindered by the deformation of the door frame body due to external force, comprising: It is formed of a metal material or a ceramic material, A first surface that abuts against a part of the door frame body, and a second surface on the opposite side of the first surface, There is a tapered portion formed such that the distance between the first surface and the second surface defining the plate thickness continuously decreases from the maximum thickness to the minimum thickness in the short side direction, In order to prevent displacement from a predetermined mounting position along the contact surface with the door frame body when the door frame body deforms and comes into pressure contact with the opposing door body, surface unevenness processing is performed on at least the first surface at the maximum plate thickness portion or its vicinity, A seismic door member in which a low friction layer is formed on at least the second surface at the maximum plate thickness portion or its vicinity in order to reduce the opening force for rotating the door body to open the door when in the pressure contact state.

2. A rectangular thin plate-shaped seismic door member attached to the door body for preventing the opening operation of the door body in the closed state from being hindered by the deformation of the door frame body due to external force, comprising: It is formed of a metal material or a ceramic material, A first surface that abuts against a part of the door body, and a second surface on the opposite side of the first surface, There is a tapered portion formed such that the distance between the first surface and the second surface defining the plate thickness continuously decreases from the maximum thickness to the minimum thickness in the short side direction, In order to prevent displacement from a predetermined mounting position along the contact surface with the door body when the door frame body deforms and comes into pressure contact with the opposing door frame body, surface unevenness processing is performed on at least the first surface at the maximum plate thickness portion or its vicinity, A seismic door member in which a low friction layer is formed on at least the second surface at the maximum plate thickness portion or its vicinity in order to reduce the opening force for rotating the door body to open the door when in the pressure contact state.

3. The seismic door member according to claim 1 or 2, wherein the surface unevenness processing is knurling, friction material coating, or blasting.

4. The seismic door member according to claim 1 or 2, wherein the region where the surface unevenness processing is performed on the first surface is a strip extending in the longitudinal direction of the seismic door member, and its width is in the range of 1 / 20 to 1 / 4 of the width of the seismic door member in the short side direction.

5. The earthquake-resistant door member according to claim 1 or 2, wherein the low-friction layer is a baked layer containing a fluororesin, a hard coat layer containing a silica component, a vapor deposition layer mainly composed of diamond-like carbon, or a surface modification layer by shot blasting of molybdenum disulfide.

6. The earthquake-resistant door member according to claim 5, wherein the thickness of the baked layer is in the range of 5 to 100 μm, the thickness of the hard coat layer is in the range of 0.5 to 30 μm, the thickness of the vapor deposition layer is in the range of 0.5 to 10 μm, or the thickness of the surface modification layer is in the range of 1 to 20 μm.

7. The earthquake-resistant door member according to claim 1 or 2, wherein the second surface of the gradually decreasing portion is formed in an arc shape that curves along the maximum rotation locus drawn by the rear edge portion of the side surface of the door body that rotates with the maximum rotation radius.

8. The earthquake-resistant door member according to claim 1 or 2, wherein a magnet sheet for attachment and fixation is laid in a region other than the region where the surface of the first surface is subjected to uneven processing.

9. A door body, A door frame body surrounding the outer peripheral edge of this door body, A hinge member that rotatably connects the door body and the door frame body so that the door body takes a closed position and an open position by being rotatable with respect to the door frame body, An earthquake-resistant door member according to claim 1, The door frame body includes a pair of side frame bodies parallel to each other, the hinge member is connected to one of the pair of side frame bodies, and the earthquake-resistant door member is attached to at least a part of the other, The earthquake-resistant door, wherein the earthquake-resistant door member is attached such that the maximum plate thickness portion or the vicinity thereof and the rear edge portion of the side surface of the door body that rotates with the maximum rotation radius face each other when the door body is in the closed position, and is located on or outside the maximum rotation locus drawn by the rear edge portion of the side surface of the door body.

10. A door body, A door frame body surrounding the outer peripheral edge of this door body, A hinge member that rotatably connects the door body and the door frame body so that the door body takes a closed position and an open position by being rotatable with respect to the door frame body, An earthquake-resistant door member according to claim 2, The door body includes a pair of outer surfaces parallel to each other, the hinge member is connected to one of the pair of outer surfaces, and the earthquake-resistant door member is attached to at least a part of the other, The earthquake-resistant door, wherein the earthquake-resistant door member is attached such that the maximum plate thickness portion is located on the front side of the door body with respect to the minimum plate thickness portion, and the rotation radius of the maximum plate thickness portion is equal to or greater than the rotation radius of the minimum plate thickness portion.

Images