JP3401477B2 - Seismic door safety device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-earthquake door safety device for preventing a door from being opened due to shaking or movement of stored items caused by an earthquake. It is. 2. Description of the Related Art Conventionally, as an earthquake-resistant door safety device for preventing a door body from being opened due to shaking or movement of stored items due to the occurrence of an earthquake, as disclosed in Japanese Patent No. 2877798, There are doors provided with a lock mechanism. The lock mechanism includes an engaging protrusion provided on the door body and a main body-side holding member which expands and contracts to the right and left to enable the engaging protrusion to be disengaged. Then, during the normal opening and closing operation of the door, the holding body can freely expand and contract to engage and disengage the engaging projections, so that the opening and closing operation of the door can be performed without any trouble. If an earthquake occurs when the door is closed, the lock mechanism operates to prevent the holder from expanding. For this reason, the engagement projection cannot be disengaged from the holding body, so that the door body can be prevented from being opened due to shaking, rear-collision of a stored item, or the like. After the earthquake, by opening and closing the door, the lock mechanism can be easily released, enabling normal opening and closing of the door and preparing for the next earthquake. I could do it. However, in the above-mentioned conventional product, each time the door body is opened and closed, an engagement sound and an engagement release sound between the engagement projection and the holder are generated. There was a problem in using it in a quiet place or situation such as a hospital room or a conference room. Also, if an earthquake occurs with the door open and any strong impact is applied to the main body, the lock mechanism will operate on the main body side, making it impossible to expand the holding body. However, the engaging projection cannot be engaged with the holder, and the door cannot be closed and the lock mechanism cannot be released. Therefore, in order to restore the normal opening / closing operation of the door body, a special operation or tool is required for the unlocking operation, such as inserting a tool to unlock the holding body, which is troublesome. In particular, with a lock mechanism installed at a high place, the release of the lock mechanism involved much trouble and danger. [0005] The present invention has been made in order to solve the above-mentioned problems.
The normal opening / closing operation of the door body enables the quiet opening / closing operation of the door body without generating the operation of the lock mechanism or the contact noise between parts. Further, when an earthquake occurs, the lock mechanism is reliably operated to prevent the door from being opened, but no special operation or tool is required to operate the lock mechanism. Also, unlocking after the end of the earthquake,
It is possible to easily release the door simply by opening and closing the normal door without any special operation or tool, and to prepare for the occurrence of the next earthquake. Furthermore, even when the lock mechanism is activated when the door is opened, the release of the lock mechanism and the closing of the door body do not require any special operation or tool, etc.
Easy operation by opening and closing the door. [0006] In this specification, the door means not only a double-door system that opens and closes with a hinge or the like as a fulcrum, a single-door system, but also a sliding door that slides along a guide rail, an accordion door, and the like. The main body includes not only a building connecting the door body but also a cabinet, a wall surface, a desk, a cupboard, a refrigerator, other furniture, and the like. SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention has a door body that can be opened and closed on a main body, and is movably arranged by vibration during an earthquake. With the movement of the movable body, an earthquake occurs with the support shaft supported by the main body as a fulcrum
Sometimes a seesaw body that can rotate in a seesaw shape, and projects on the side surface of this seesaw body and moves with the rotation of the seesaw body during an earthquake, and engages with a restricting piece arranged on the door body only during this movement open side and the engagement piece, the engagement piece can be engaged with the restricting piece only at the time of the earthquake, the door body in engagement with the engaging piece to be
An engaging portion that engages when moving at a constant force or more countercurrent, this
By pressing the door in the closing direction in the engaged state of
Regulates the outer surface of the seesaw body that has turned into a seesaw shape due to the earthquake
It is possible to restore this seesaw body to its original position by pressing with a piece
And the door was pressed with a certain force in the closing direction.
Sometimes, the engagement part is elastically deformed to release the engagement and the door can be closed
It is a function . Since the present invention is constructed as described above, the movable body does not move in a normal state in which no earthquake occurs, so that the seesaw body is connected to the seesaw via the support shaft. It keeps its normal position without turning. Therefore, the engaging piece protruding from the side surface of the seesaw body does not engage with the regulating piece provided on the door body.
There is no contact between other parts. Then, in normal times, the door can be opened and closed quietly without generating unpleasant contact sounds as in the related art. As a result, it is suitable for use in quiet places and situations such as hospital rooms and meetings. Next, when an earthquake occurs, violent vibration is applied to the main body and the door body, so that the movable body disposed in the seesaw body moves within the seesaw body. With the movement of the movable body, the seesaw body rotates in a seesaw shape with the support shaft as a fulcrum. Due to this rotation, the engaging piece protruding from the side surface of the seesaw body moves in the restricting piece direction and engages with the restricting piece. By the engagement between the engaging piece and the regulating piece,
The lock mechanism operates to regulate the opening operation of the door. [0010] Therefore, even if a strong shock in the opening direction is applied to the door body due to strong vibration, rear-end collision of the stored object, or the like, the engagement between the engaging piece and the regulating piece is not released, and the door body is strong. It is not released by an earthquake. Then, in order to release the locked state after the end of the earthquake and recover the normal opening / closing operation of the door, first, the door is strongly opened in the opening direction from the locked state.
Due to this opening operation, the restricting piece and the engaging piece come into strong contact with each other, and a certain or more strong pressing force is applied to the restricting piece in the direction of the seesaw body. Due to this pressing force, the restricting piece rotates against the restriction by the engaging portion, moves in the direction of the seesaw body, and is engaged and fixed to the engaging portion at this moving position, and is moved in the restoring direction. Movement is regulated. Next, when the closing operation of the door body is performed, the restricting piece contacts the outer surface of the seesaw body and pushes it up, so that the seesaw body rotates in the restoration direction with the support shaft as a fulcrum, and It returns to the state of. By the return of the seesaw body to the original position, the engagement between the engagement piece and the restriction piece can be released. Further, due to the reaction of the pressing of the outer surface of the seesaw body by the restricting piece, a certain force or more acts on the restricting piece in the restoring direction. Therefore, the regulating piece itself also rotates in the restoring direction against the regulation of the engaging portion, and returns to the original position. When the seesaw body and the regulating piece return to their original positions, the lock mechanism is released, and the engaging piece and the seesaw body and the regulating piece are brought into a non-contact state. As described above, by simply opening and closing the door, the release of the lock mechanism is completed, so that the normal opening and closing of the door can be smoothly performed again, and it is possible to prepare for the next earthquake. . As described above, in the present invention, the door can be prevented from being opened in the event of an earthquake by simply performing the normal opening and closing operation of the door without requiring any special operation or tool. It is possible to release the locked state. This lock mechanism also operates reliably when an earthquake occurs to prevent the door from being opened. Further, in the prior art, if an earthquake occurs when the door is opened and the lock mechanism is activated, the door cannot be closed, and a special operation or tool is required to release the lock mechanism. However, in the present invention, even in such a situation, the closing of the door body and the release of the lock mechanism can be easily performed without requiring any special operation or tool. Explaining the operation, when an earthquake occurs when the door is opened, the lock mechanism operates on the main body side, and the seesaw body moves. When the closing operation of the door body is performed in this state, the outer surface of the regulating piece abuts on the tip of the engaging piece. Then, when the closing operation of the door body is continued, the engaging piece is pushed up by the regulating piece, and after the engaging piece gets over the regulating piece, the engaging piece engages with the regulating piece and the closing of the door body is performed. Is completed. The closing operation of the door body can be smoothly performed by pushing up the engaging piece by the restricting piece. Although the door remains locked due to the engagement between the engaging piece and the regulating piece, the locking mechanism can be easily released by sequentially opening and closing the door. Thus, a normal opening and closing operation of the door body can be performed. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. (1) A door is a cabinet, a cupboard, a refrigerator,
It is openably and closably connected to a main body (2) of other furniture or the like via a suitable connecting tool such as a hinge or a magnet catch (not shown). The door (1) is separated from a device for opening and closing the door (1) such as the coupling tool and the magnet catch.
A lock mechanism is provided to prevent the door from opening. The structure is such that a fixing device such as a screw is attached to the main body (2).
The fixing plate (3) is fixed by (9) to form a part of the main body (2), and a pair of support pieces (4) are protruded below the fixing plate (3) at a predetermined interval. ing. Then, a box-shaped seesaw body (7) having an opening on the upper surface and a housing portion (5) is connected to the support piece (4). The support piece (4) and the seesaw body (7) are connected by inserting the support shaft (8) into the support holes (6) provided at the lower ends of the support piece (4) and the seesaw body (7). The seesaw body (7) can swing in a seesaw shape through the support shaft (8). Then, the accommodation section (5) of the seesaw body (7)
In addition, a movable body (10) such as a ball having a certain weight and movable by vibration during an earthquake is movably stored. This movable body (10) is normally a seesaw body opposite to the door body (1) via a support shaft (8) as shown in FIG.
It is located on one wall (11) side of (7). For this reason, the seesaw body (7) uses the one wall (11) as a support wall (1) for the fixing plate (3).
It is arranged in a horizontal state with the upper end abutting against the top surface of the fixing plate (3) and the main body (2) while being abutted against 3). In the event of an earthquake, the movable body (10) is
When moving to the other wall (12) side via (8), the seesaw body
(7) rotates about the support shaft (8) as a fulcrum. As shown in FIG. 3, the locking projection (1) protrudes from the center of the upper end of the one wall (11).
4) abuts the fixing plate (3), so that the seesaw body (7)
Are arranged obliquely and the rotation more than necessary is restricted to prevent the movable body (10) from dropping out of the storage part (5). Further, the movable body (10) is provided with a movement restricting means so that the movable body (10) does not move due to normal vibration generated when a person walks or performs a normal opening / closing operation of the door (1). Form. As an example, in the present embodiment, the seesaw body
An engaging groove (16) is provided on the bottom wall (15) on the one wall (11) side of (7), and a ball-shaped movable body (10) is engaged with the engaging groove (16). The movement of the movable body (10) is not caused by the vibration of. The arrangement relationship between the housing part (5) and the support shaft (8) is such that, in a state where no earthquake occurs, the one wall (11) on the side where the movable body (10) is arranged and the support The movable body (10) moves and is arranged at the time of the earthquake, rather than the distance from the axis (8).
The distance between the other wall (12) and the support shaft (8) is increased. By forming in this manner, the movable body (10) that has moved in the direction of the engagement piece (18) at the time of the occurrence of the earthquake is less likely to move in the direction of the one wall (11). Also, it is assumed that it is difficult to stabilize the one wall (11) side to release the lock, and the state where the movable body (10) has moved to the other wall (12) side during an earthquake occurs. Then, the movable body (10) is not restored by the continuous vibration of the earthquake, and the seesaw body (7) is prevented from returning to the state before the occurrence of the earthquake. Further, the seesaw body (7) is provided with a restoration taper (17) by forming an outer surface from the other wall (12) to the bottom wall (15) into an arc shape and providing the restoration taper (17).
At the upper part of (17), there is provided an engagement piece (18) projecting in a tapered shape in the direction of the door body (1). The engagement piece (18) rotates integrally with the rotation of the seesaw body (7). A restricting piece (20) for engaging the engaging piece (18) and pressing the restoring taper (17) is arranged facing the restoring taper (17) and the engaging piece (18). The restricting piece (20) is fixed to the door body by the fixture (9).
It is stored in the storage case (21) fixed to (1), and the rotation projections (22) protruding on both sides of the base end are engaged with the engagement holes (23) on both sides of the storage case (21). And the rotation projection (2
The restricting piece (20) is rotatable in the direction of the seesaw body (7) around 2) as a fulcrum. Further, an engaging portion (25) which is elastically deformable with a certain force or more is protruded from the storage case (21), and this engaging portion (25) is connected to the base end of the regulating piece (20). By engaging the upper side (29) of the engagement opening (24) opened at the center of the
The rotation of (20) is restricted. That is, this engaging portion (25)
The restriction piece (20) does not rotate even if a slight pressing force or vibration is applied, but when a certain force or more is applied, the restriction piece (20) resists the restriction force of the engagement portion (25). And the upper side (29)
Rotates over the engaging portion (25) in the direction of the seesaw body (7) and moves. Also, at this destination,
The engaging portion (25) is engaged with the upper side (29) of (20),
(20) is engaged and fixed so that it does not easily rotate, but when a force exceeding a certain level is applied, the upper side (29) is engaged.
The restriction piece (20) is rotated in the restoration direction over the (25), and returns to the original position. In the storage case (21), a tapered step (27) is formed on the inner surface of both side walls (26) at the normal position of the regulating piece (20), and the regulating piece (20) is formed. ) Is provided on the moving side, so that the regulating piece (20)
The movable range of the is regulated. And usually, the regulation piece
(20) is abuttingly engaged with the tapered step (27), so that the pressing surface (30) of the restricting piece (20) is a seesaw body.
(7) It is arranged in a tapered shape in the direction, and the door body (1)
When closing, the pressing surface (30) and the restoring taper (17)
Are not in contact with each other. When the restricting piece (20) moves toward the seesaw body (7) via the engaging portion (25) and comes into abutting engagement with the locking projection (28), the door body (1) is moved. ) Is closed, the pressing surface (30) comes into contact with the restoring taper (17) of the seesaw body (7) so as to be able to push it up. Each component is formed so as to be rotatable. In the above configuration, in a normal state where no earthquake occurs, as shown in FIG. 2, the movable body (10) is engaged with the engagement groove (16) of the seesaw body (7). However, the movement does not occur with a slight vibration. Therefore, the seesaw body (7) does not rotate, and the one wall (11) is fixed to the fixing plate (3).
Abut against the support wall (13) of the
The seesaw body (7) is placed in a horizontal state while abutting against the top surface of (3) and the main body (2). On the other hand, the regulating piece on the door (1) side
(20) is engaged and fixed to the step (27) side by the engaging portion (25), and its rotation is regulated. With this arrangement, the engaging piece (18) of the seesaw body (7) does not engage with the regulating piece (20), and the lock mechanism is not operated. The normal opening / closing operation can be freely performed. Also, since the seesaw body (7) does not come into contact with the regulating piece (20) at all, a quiet door body which does not generate contact noise between the components of the lock mechanism.
The opening / closing operation of (1) becomes possible. Next, when an earthquake occurs, violent vibration is applied to the main body (2) and the door body (1).
As shown in FIG. 3, the movable body (10) arranged in the accommodation portion (5) moves to the engagement piece (18) side in the accommodation portion (5). With the movement of the position of the movable body (10), the seesaw body
(7) changes the center of gravity and rotates in a seesaw shape with the support shaft (8) as a fulcrum. In conjunction with the rotation of the seesaw body (7), the engaging piece (18) protruding from the side surface also moves in the direction of the regulating piece (20), and as shown in FIG. Engages. By this engagement, the lock mechanism operates, and the opening of the door (1) is regulated. Therefore, even if a strong shock in the opening direction is applied to the door body (1) due to strong vibrations or a collision of a stored item, the engagement between the engagement piece (18) and the restriction piece (20) is released. No, the door (1) is not opened. The seesaw body (7) is provided on one side of the side on which the movable body (10) is arranged in a state where no earthquake occurs.
The movable body (10) is moved and arranged in the event of an earthquake, rather than the distance between the (11) and the support shaft (8).
Because the distance from (8) is large, seesaw body
The center of gravity of (7) is coupled with the movement of the movable body (10), and the other wall (1)
2) It is biased in the direction. Further, the seesaw body (7) is inclined as shown in FIG. 3 by the rotation of the seesaw body (7), and the movable body (10) is disposed at the lower end in the inclined direction. As a result, the seesaw body (7) is restored by the shock due to the continuation of the earthquake, and the engagement between the engagement piece (18) and the restriction piece (20) is not released, and the opening prevention effect of the door (1) is prevented. Is increasing. Next, in order to release the lock mechanism after the end of the earthquake and recover the normal opening / closing operation of the door (1), first,
The door (1) is strongly opened in the opening direction from the state shown in FIG. By this opening operation, as shown in FIG.
The upper side (29) of the (20) strongly hits the engaging piece (18), and the upper side (29) rotates in the direction of the locking projection (28) while elastically deforming the engaging portion (25). . Then, as shown in FIG. 5, the upper side (29) of the restricting piece (20) climbs over the engaging portion (25) and engages with the locking projection (2).
8), and after the movement, the locking projections (2)
8) and the engaging portion (25) engages and is fixed. By this position movement, the restricting piece (20) comes into contact with the restoring taper (17) and can be pressed. Incidentally, in this state, as shown in FIG. 5, the door (1) is slightly opened, but since the locked state has not been released, normal large opening cannot be performed. Next, when the closing operation of the door (1) slightly opened by the above-mentioned opening operation is performed, the pressing surface (3) of the regulating piece (20) is opened.
0) comes into contact with and pushes up the restoring taper (17) of the seesaw body (7) as shown in FIG. This push-up causes the seesaw body (7) to rotate about the support shaft (8) as a fulcrum, and returns to the horizontal state before the occurrence of the earthquake as shown in FIG. When the seesaw body (7) returns, as shown in FIG. 7, there is a gap between the door body (1) and the main body (2), and the door body (1) is completely removed. Not closed. When the door (1) is to be completely closed, the pressing surface (30) of the restricting piece (20) is restored by the pressing force (17).
As shown in FIG. 8, the upper side (29) of the restriction piece (20) moves over the engaging portion (25) and moves to the original position side. It returns to the state before the earthquake as shown. This regulation piece (20) and seesaw body
The lock state is released by returning to the original position of (7),
The normal opening / closing operation of the door body (1) becomes possible, and the state is prepared for the next earthquake. As described above, in the present invention, the lock mechanism for preventing the door (1) from being opened in the event of an earthquake can be reliably operated without requiring any special operation. As a result, an excellent door opening prevention effect can be obtained.
Further, after the end of the earthquake, the locked state can be easily released simply by performing the normal opening / closing operation of the door (1). In the prior art, if an earthquake occurs when the door is opened and the lock mechanism is activated, the door cannot be closed or unlocked. Etc., and it took time to return. However, according to the present invention, even if the lock mechanism is operated in a state where the door body (1) is opened, the door body (1) can be closed without any trouble, and no special operation or tool is required. The lock state can be easily released. That is, when an earthquake occurs while the door (1) is opened, the seesaw body (7) rotates in a seesaw shape about the support shaft (8) by the movement of the movable body (10). (2)
The locking mechanism operates on the side. However, the door body
Since (1) is open, the engagement piece (18) and the restriction piece (20)
Are not engaged, and the restricting piece (20) does not move, and is fixed to the normal position. In this state, when the closing operation of the door (1) is performed, in the closing process, as shown in FIG. 9, the tip of the engaging piece (18) is pressed against the pressing surface (30) of the regulating piece (20). Contact with. Then, as the regulating piece (20) moves in the direction of the main body (2), as shown in FIG. 10, the engaging piece (18) is gradually pushed up by the tapered pressing surface (30). Then, finally, the pressing member 30 gets over the pressing surface 30, and as shown in FIG.
(18) is engaged with the regulating piece (20), and the closing of the door (1) is completed. Therefore, according to the present invention, even if an earthquake occurs when the door (1) is opened, the door (1) can be closed without any trouble. However, if the door (1) is simply closed, the door (1) is locked by the engagement between the engagement piece (18) and the restriction piece (20). By performing the opening and closing operation of the door (1) as shown in FIGS. 4 to 8, the locked state can be released, and the normal opening and closing operation of the door (1) can be performed. As described above, the present invention is constructed as described above, so that the lock mechanism is reliably operated in the event of an earthquake, but no special operation is required to operate the lock mechanism. In addition, after the end of the earthquake, the lock mechanism can be easily released simply by opening and closing the normal door without using any special operation or tool for releasing the lock. Then, the normal opening and closing operation of the door body can be recovered, and it is possible to prepare for the occurrence of the next earthquake. Further, during the normal opening and closing operation of the door, no contact noise is generated between the components, and the door can be opened and closed quietly. Furthermore, even if the lock mechanism operates when the door is opened, the door can be securely closed and the lock mechanism can be easily released by opening and closing the door.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing one embodiment of the present invention. FIG. 2 is a sectional view showing a positional relationship between a seesaw body and a regulating piece before an earthquake occurs. FIG. 3 is a cross-sectional view showing a positional relationship between an engagement piece and a restriction piece of a seesaw body when an earthquake occurs. FIG. 4 is a cross-sectional view showing a state in which an upper side of a regulating piece comes into contact with an engaging portion by an opening operation of a door body. FIG. 5 is a cross-sectional view showing a state in which the restriction piece has passed over the engagement portion. FIG. 6 is a cross-sectional view showing a state in which the seesaw body is pushed up in a restoring direction by a regulating piece by a closing operation of the door body. FIG. 7 is a sectional view showing a state in which the seesaw body returns to its original position. FIG. 8 is a sectional view showing a state in which the upper side of the restricting piece has passed over the engaging piece in the restoring direction due to strong contact between the restoring taper and the restricting piece. FIG. 9 is a cross-sectional view showing a state in which when an earthquake occurs when the door is opened, the closing operation of the door is performed, and the engaging piece is pushed up by the restricting piece. FIG. 10 is a cross-sectional view showing a state immediately before the engagement piece pushed up by the restriction piece passes over the restriction piece. [Description of Signs] 1 door body 2 main body 7 seesaw body 8 support shaft 10 movable body 18 engaging piece 20 regulating piece 25 engaging portion

Claims (1)

(57) [Claims] [Claim 1] When a door body is arranged to be openable and closable on a main body, the door body is supported by the movement of a movable body movably arranged by vibration during an earthquake. A seesaw body that can rotate in the shape of a seesaw with the support shaft as a fulcrum during an earthquake , and protrudes from the side surface of the seesaw body and moves with the rotation of the seesaw body during an earthquake. An engaging piece that engages with the restricting piece disposed on the door body, and a restricting piece that can be engaged with the engaging piece only during an earthquake , the door body is opened in the opening direction in an engaged state with the engaging piece. > engaging portion engaged when moving with a constant force or more, the engagement
By pressing the door in the closing direction in the
The outer surface of the seesaw body that has rotated more like a seesaw has been used
Pressing more makes it possible to restore this seesaw body to its original position
When the door is pressed with a certain force in the closing direction
The door can be closed by releasing the engagement by elastically deforming the engagement part
Seismic door safety device, characterized in that was.