JP2002054339A - Safety device for earthquake-resisting door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a lock mechanism which has been operated during the occurrence of an earthquake from released while the earthquake is continuing, and also to make continuous a closed state of a door body. SOLUTION: A door body 1 is connected to the main body in an openable manner, and a seesaw body 7 rotatable with a support shaft 8 as a fulcrum is provided for the main body 2. This seesaw body 7 is normally not in a state of linking with a regulating piece 2 of the door body 1 by means of a movable body 10; at the occurrence of an earthquake, this seesaw body 7 rotates and links to a regulating piece 20, and the door body 1 is made non-openable. Also, on the rear surface of the seesaw body 7, a linking recessed portion 33, to which a spherical auxiliary movable body 32 is fittable, is provided; at the occurrence of an earthquake, the auxiliary movable body 32 moves freely through a long gutter 35 provided in the main body 1, which causes a collision of the rear surface of the seesaw body 7 to the auxiliary movable body 32, by which the return of the seesaw body 7 to the ordinary position of the seesaw body 7 is made difficult.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an earthquake-resistant door safety device for preventing a door body from being opened due to shaking or movement of a stored item caused by an earthquake.

[0002]

2. Description of the Related Art Conventionally, in order to prevent a door body connected to a main body from being opened due to shaking or movement of stored items due to the occurrence of an earthquake, a seesaw body which rotates in a seesaw shape with shaking has been used. There were seismic door safety devices that actuated the body locking mechanism. The seesaw body is formed so as to be rotatable around the support shaft on the main body, and the seesaw body is normally disengaged with the engaging portion of the door body,
A movable body such as a metal ball is arranged so that the position of the seesaw body can be held. Then, when an earthquake occurs, the movable body moves on the seesaw body and rotates the seesaw body, thereby engaging the seesaw body with the regulating piece provided on the door body, activating the lock mechanism, The door cannot be opened.

[0003]

However, the seesaw body may rotate in a fixed position direction before the earthquake depending on the magnitude of the vibration of the earthquake and the timing of the shaking.
When the seesaw body returns, the lock mechanism is released, and the door body may be opened.

[0004] The present invention has been made in order to solve the above-mentioned problems.
When an earthquake occurs, the lock mechanism is operated, and during the continuation of the earthquake, the lock mechanism is not easily released, so that the closing of the door body can be reliably continued.

[0005] In this specification, the door includes not only a double door system and a single door system that open and close with a hinge or the like as a fulcrum, but also a sliding door and an accordion door that slides along a guide rail. 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.

[0006]

According to the present invention, in order to solve the above-mentioned problems, a door body is connected to a main body so as to be openable and closable, and a seesaw body which is rotatable around a support shaft is provided on the main body. In this seesaw body, a movable body is arranged so as to be able to hold the position of the seesaw body so that it is normally disengaged from the regulating piece of the door body, and when an earthquake occurs, the movable body moves on the seesaw body and moves the seesaw body. When the door is unopenable by rotating and engaging the restricting piece of the door body with the seesaw body, the back surface of the seesaw body where the movable body is placed during normal times when no earthquake occurs will be An auxiliary recess is provided in which an auxiliary movable body that is movable at the time of occurrence can be fitted, and a long groove is formed in a main body corresponding to the engaging recess so that the auxiliary movable body can move freely due to earthquake vibration. When the body moves in the long groove due to an earthquake, Backside and auxiliary movable body collides the saw body, are those made as difficult to restore to normal position of the seesaw member.

[0007] In the long groove, a guide slope may be formed to guide the auxiliary movable body to a fixed position corresponding to the engagement recess at the end of the earthquake.

[0008] Further, a plurality of long grooves and engagement recesses in which the auxiliary movable bodies are arranged may be formed.

The fixed positions of the plurality of engaging recesses and the auxiliary movable bodies fitted into the engaging recesses are randomly provided so as not to be arranged on a coaxial line parallel to the support shaft of the seesaw body. May be.

Further, the engagement and disengagement of the seesaw body and the regulating piece are performed by engaging an engagement piece projecting from the side surface of the seesaw body and capable of moving its position with the rotation of the seesaw body during an earthquake. Only the restricting piece can be engaged with the restricting piece to restrict the opening of the door, and the restricting piece can be restricted by the engaging portion so that the position can be moved and restored when a certain force or more is applied. In the state where the engaging piece of the seesaw body and the restricting piece are engaged, the restricting piece moved by applying a certain force or more can press the outer surface of the seesaw body and restore this seesaw body to its original position The engagement between the seesaw body and the restriction piece may be released.

The restricting piece may reciprocate within a certain movable range by elastically deforming the engaging portion to get over the restricting piece.

[0012]

Since the present invention is constructed as described above, the movable body does not move in a normal state where no earthquake occurs, and the seesaw body rotates in a seesaw shape via the support shaft. Nothing to do. In addition, since the auxiliary movable body that can prevent the restoration of the seesaw body is fitted in the engagement concave portion of the seesaw body, the seesaw body maintains the normal position. Therefore, in normal times, the seesaw body and the regulating piece provided on the door body do not engage with each other, and the lock mechanism is not operated. Therefore, the operator of the door body can easily perform the opening / closing operation. .

[0013] 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 on 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. By this rotation, the seesaw body engages with the regulating piece provided on the door body. The engagement between the seesaw body and the regulating piece activates the lock mechanism, thereby regulating the opening operation of the door body.

[0014] Conventionally, the seesaw body rotates in the restoration direction due to the magnitude of vibration and the timing of shaking during an earthquake, and the like.
The lock mechanism could be released. However, in the present invention, since the auxiliary movable body capable of preventing the restoration of the seesaw body is arranged, the lock mechanism is not easily released during the continuation of the earthquake.

That is, when an earthquake occurs, the seesaw body rotates and engages with the restricting piece as described above, and when the lock mechanism operates, the engagement between the engagement recess of the seesaw body and the auxiliary movable body is released. You. By this disengagement, the auxiliary movable body moves freely within the long groove along with the vibration of the earthquake.

The auxiliary movable body that has been freely moved as described above is difficult to fit into the engagement recess of the seesaw body.
Then, even if the seesaw body tries to rotate in the restoration direction due to the action of the intense vibration, the auxiliary movable body collides with the back surface of the seesaw body and prevents the seesaw body from being restored. Therefore, even if a strong shock in the opening direction is applied to the door body due to strong vibration or collision of stored items, the seesaw body does not return to its original position and the locked state is maintained, so during the earthquake, The closure of the door body can be reliably sustained.

Next, at the end of the earthquake, the operation of the auxiliary movable body that has been freely moved by vibration gradually converges,
The auxiliary movable body naturally returns to the fitting position with the engagement concave portion of the seesaw body and stops. Therefore, when the seesaw body is rotated in the original position direction by a simple manual operation or appropriate means,
Since the auxiliary movable body does not collide with the back surface of the seesaw body and fits into the engagement concave portion, the restoration of the seesaw body is not prevented, and the seesaw body is surely restored to the original position.

By the restoration of the seesaw body, the seesaw body and the restriction piece are separated from each other, and the locked state is released. Therefore, the normal door opening / closing operation can be performed again, and it becomes possible to prepare for the next earthquake.

As described above, according to the present invention, the lock mechanism operated at the time of the occurrence of an earthquake is not easily released by vibrations or impacts, and the door can be reliably closed during the continuation of the earthquake. It is.

In addition, a guide slope for guiding the auxiliary movable body to a fixed position corresponding to the engagement concave portion at the end of the earthquake is formed in the long groove in which the auxiliary movable body moves, so that the auxiliary movable body is provided at the end of the earthquake. Quickly and accurately returns to the position of engagement with the engagement recess along the guide inclination. Therefore, after the earthquake,
The lock mechanism can be released immediately, and when the seesaw body is restored, the auxiliary movable body is securely fitted into the engagement recess, so that the seesaw body can be smoothly restored and the lock mechanism can be securely released. Can be done.

Further, if only one long groove and engagement recess in which the auxiliary movable body is arranged is formed, the manufacture is simple and the material cost can be reduced. However, if the seesaw body accidentally rotates in the restoration direction while the auxiliary movable body moving in the long groove passes through the engagement position with the engagement recess, the auxiliary movable body fits into the engagement recess. And the lock mechanism may be released. Therefore, if a plurality of the long grooves and the engagement recesses are formed, there is a high possibility that any of the auxiliary movable bodies exists at a position where the auxiliary movable body does not fit with the engagement recess. Accordingly, since the auxiliary movable body collides with the back surface of the seesaw body and prevents the seesaw body from returning, the effect of preventing the seesaw body from being restored during the continuation of the earthquake can be enhanced.

The normal fixed positions of the plurality of engaging recesses and the auxiliary movable body fitted into the engaging recesses as described above are arranged on a coaxial line parallel to the support axis of the seesaw body. If the auxiliary movable body is provided at random so that the auxiliary movable body does not fit into the engagement concave portion during the continuation of the earthquake, the effect can be enhanced. And the effect of preventing the restoration of the seesaw body can be more reliably implemented.

That is, even if a plurality of auxiliary movable bodies are arranged, these plurality of auxiliary movable bodies tend to reciprocate integrally along a coaxial line parallel to the support shaft in accordance with the vibration of the earthquake. . When a plurality of engagement recesses are formed in parallel with the support shaft, all the auxiliary movable bodies move at the same time through the engagement positions with the engagement recesses. Therefore, when the auxiliary movable body reaches this fitting position and the seesaw body accidentally attempts to return to the original position direction, the auxiliary movable body fits into all the engagement recesses, and the seesaw body is moved. There is a possibility to restore to the original position.

However, if the plurality of engaging recesses are formed at random positions so as not to be arranged in parallel with the support shaft, even if each auxiliary movable body reciprocates integrally, one of the auxiliary movable bodies will The collision with the back of the body prevents the seesaw body from restoring.

As an example of means for engaging and disengaging the seesaw body with the restricting piece, an engaging means capable of moving the position on the side surface of the seesaw body with the rotation of the seesaw body during an earthquake. Only when this piece is moved, the engaging piece is engaged with the regulating piece so that opening of the door body can be regulated. In addition, the restricting piece can be restricted by an engaging portion so that the position can be moved and restored when a certain force or more is applied. Also,
This restricting piece presses the outer surface of the seesaw body that has rotated in a seesaw shape due to an earthquake when the position of the restricting piece is moved by applying a force of a certain degree or more in a state where the engaging piece and the restricting piece of the seesaw body are engaged. Then, the seesaw body can be restored to the original position.

With the above-described structure, when an earthquake occurs, the engaging piece moves with the rotation of the seesaw body and engages with the regulating piece, so that the lock mechanism operates to operate the door body. It prevents opening. When the lock mechanism is released, first, the door body is strongly opened in the opening direction with the auxiliary movable body restored to the home position. By this opening operation,
Since the restricting piece and the engaging piece are in strong contact with each other, 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 door body is closed, 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. Trying to return to the state of. In the process of this return, the auxiliary movable body is fitted into the engagement concave portion of the seesaw body, so that the restoration of the seesaw body is not prevented, and the seesaw body can be completely returned to the original position.

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. By the return of the engaging piece of the seesaw body and the regulating piece of the door body to the original position,
The lock mechanism is released. In this way, by providing the engaging piece on the seesaw body and making the regulating piece movable, the locking mechanism can be released simply by opening and closing the door without using any special operation or tool. It will be completed.

With such a structure, even if an earthquake occurs when the door is opened and the lock mechanism is activated, the lock mechanism is released and the door can be easily opened and closed. In other words, when an earthquake occurs while the door is open and the lock mechanism is activated, the seesaw body turns and moves in the direction of engagement with the regulating piece. 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. And if you keep closing the door,
After the engaging piece is pushed up by the restricting piece and the engaging piece gets over the restricting piece, the engaging piece engages with the restricting piece, and the closing of the door body 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.

[0031]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG. 6. (1) is a door, which 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 as shown in FIG. 1, a support piece (4) is fixed below the fixing plate (3). A pair protrudes through the space. Then, the support piece (4) has an upper
A box-shaped seesaw body (7) provided with (5) is connected. The support piece (4) and the seesaw body (7) are inserted into support holes (6) provided at the lower ends of the support piece (4) and the seesaw body (7), respectively.
Connection is made by inserting (8). This support shaft (8)
Has one end having a head larger in diameter than the support hole (6), and after inserting the support shaft (8) into the support hole (6), as shown in FIG. Also, the support shaft (8) is prevented from coming off from the support hole (6) by expanding the other end into a rivet shape. With this configuration, the seesaw body (7) is rotatable in a seesaw shape via the support shaft (8).

Then, the accommodating portion (5) of the seesaw body (7)
In addition, a movable body (10) such as a metal ball having a certain weight and movable by vibration during an earthquake is movably housed. This movable body (10) is normally located on one wall (11) side of the seesaw body (7) opposite to the door body (1) via the support shaft (8) as shown in FIG. are doing.

When an earthquake occurs, the movable body
(10) moves to the other wall (12) side via the support shaft (8). Then, by the movement of the movable body (10), the seesaw body (7) rotates around the support shaft (8), but as shown in FIG. Since the stop projection (14) abuts against the fixing plate (3), the seesaw body (7) is disposed obliquely with the other wall (12) side as a lower side, but rotation more than necessary is restricted, and The movable body (10) is prevented from falling off from (5).

The seesaw body (7) is located on one side of the side where the movable body (10) is arranged in a state where no earthquake occurs.
The distance between the other wall (12) and the support shaft (8) is formed larger than the distance between the (11) and the support shaft (8). I have. By forming in this manner, the center of gravity of the seesaw body (7) is moved to the movable body (10).
Along with the movement of the second wall (12).
Therefore, the movable body that moved to the other wall (12) side when the earthquake occurred
(10) is difficult to move in the direction of the one wall (11).

As described above, the movable body (10) is easily moved toward the other wall (12) due to the earthquake, but occurs when a person walks or performs a normal opening / closing operation of the door (1). It is necessary to form a movement restricting means so that the movable body (10) does not easily move toward the other wall (12) due to normal vibration. Therefore, in the present embodiment, an engagement groove (16) is provided on the bottom wall (15) on the one wall (11) side of the seesaw body (7), and the ball-shaped movable body (10) is provided in the engagement groove (16). ) To prevent the movable body (10) from moving due to normal vibration.

The seesaw body (7) is provided with a restoring taper (17) by forming an outer surface from the other wall (12) to the bottom wall (15) into an arc shape to provide a restoring 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). Then, the restricting piece () which engages the engaging piece (18) and presses the restoring taper (17) at the normal position facing the restoring taper (17) and the engaging piece (18) of the seesaw body (7). 20) is arranged on the door body (1).

The restricting piece (20) is fixed to the door (9) 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.

The storage case (21) is provided with an engaging portion (25) which is elastically deformable with a certain force or more, and this engaging portion (25) is connected to the base of the regulating piece (20). The rotation of the restricting piece (20) is restricted by engaging with the engaging opening (24) opened at the center of the end. In other words, due to the regulation of the engaging portion (25), even if a slight pressing force or vibration is applied to the regulating piece (20),
It does not rotate, but when a force exceeding a certain level is applied, the upper side of the engagement opening (24) is opposed to the regulating force of the engagement portion (25).
(29) presses the engaging portion (25) and is elastically deformed. After the upper side (29) gets over the engaging portion (25), the entire regulating piece (20) moves in the direction of the seesaw body (7). To move the position.

In this movement destination, the restriction piece (2
The engagement part (25) engages with the upper side (29) of the control piece (2),
0) is engaged and fixed so as not to rotate easily.
When a force exceeding a certain level is applied, the upper side (29) engages with the engaging portion (25).
, And is rotated in the restoring direction, and the regulating piece (20) returns to the original position.

The storage case (21) has a tapered step (27) 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 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, and the door body
When (1) is closed, this pressing surface (30) and the restoring taper
(17) so that they do not come into contact with each other.

When the regulating piece (20) moves toward the seesaw body (7) via the engaging portion (25) and comes into abutment with the locking projection (28), the door (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.

Further, in the present invention, a restoration preventing mechanism for the seesaw body (7) is provided so that the lock mechanism is not easily released during the continuation of the earthquake. The construction consists of connecting the support wall (13) to the body (2) and the support piece (4) to form a base (31) parallel to the bottom wall (15) of the seesaw body (7) in the normal position. are doing. The long groove (3) provided on the upper surface of the base (31)
In 5), an auxiliary movable body (32) having a shape such as a sphere, a column, or a cylinder, which is movable in the long groove (35) due to the occurrence of an earthquake, is movably arranged. ) Can be fitted to one wall of the seesaw body (7).
It is formed on the back surface of the bottom wall (15) on the (11) side.

When the seesaw body (7) is located at the normal position, the auxiliary movable body (32) is engaged with the engagement recess (3).
3). On the other hand, seesaw body
When the (7) rotates, the engagement concave portion (33) and the auxiliary movable body (3)
Since the engagement with 2) is released, the auxiliary movable body (32)
It moves freely in the long groove (35) with the shaking of the earthquake, and it is difficult to fit into the engaging recess (33). Therefore,
Seesaw body (7) according to the magnitude of the earthquake or the timing of the shaking
Attempts to restore to the normal position direction, the auxiliary movable body (3
2) does not fit into the engaging concave portion (33) but collides with the bottom wall (15) of the seesaw body (7), so that the seesaw body (7) is prevented from restoring and the lock mechanism is released during the continuation of the earthquake. Can be prevented.

The auxiliary movable body (32) and the engagement recess (33)
May be provided only one, but in this embodiment, three are provided in order to more reliably prevent the seesaw body (7) from being restored. As shown in FIGS. 1 and 2, two partition plates (34) are arranged on the upper surface of the base (31), and the partition plate (34) and the support piece (4) are used to support the auxiliary movable body.
Three long grooves (35) in which (32) can freely move are formed in a direction intersecting with the support shaft (8). By accommodating the auxiliary movable body (32) in each of the long grooves (35), the auxiliary movable body (32) is stored.
(32) can freely move in the long groove (35) without contacting each other. The bottom wall (15) of the seesaw body (7) is provided with an appropriate slit (not shown) so that the partition plate (34) can be engaged with the seesaw body (7) by the partition plate (34). 7) The rotation in the normal position direction is not hindered.

Further, at the end of the earthquake, each of the long grooves (35) is moved to a fixed position (36) where it can be fitted into the engaging concave portion (33).
A guiding inclination (37) for guiding (32) is provided.
This guiding inclination (37) is caused by the long groove (3) shown by line AA in FIG.
In (5), as shown in FIG. 3, the support wall (13) is inclined downwardly in the direction of the support shaft (8) with the support wall (13) as the vertex. ) Is the fixed position (36).

The long groove (35) shown by the line BB in FIG.
As shown in FIG. 4, as shown in FIG. 4, the guide groove (35) having both the support shaft (8) side and the support wall (13) apex and descending toward the center of the long groove (35) is provided. The center of () is the fixed position (36) of the auxiliary movable body (32). Further, FIG.
As shown in FIG. 5, the long groove (35) indicated by the line C-C is provided with a guide slope (37) descending toward the support wall (13) with the support shaft (8) side as the apex. 35) Support wall
The (13) side is a fixed position (36) of the auxiliary movable body (32).

As described above, in this embodiment, the engagement recesses (3
3) and three auxiliary movable bodies (32) fitted into the engaging recesses (33) are arranged at random so as not to be arranged on a coaxial line parallel to the support shaft (8). This is because, even when a plurality of auxiliary movable bodies (32) are arranged, the plurality of auxiliary movable bodies (32) tend to reciprocate integrally along a coaxial line in accordance with the vibration of the earthquake. Therefore, when the three engagement recesses (33) are formed in parallel with the support shaft (8), all three auxiliary movable bodies (32) are connected to the engagement recesses (33).
At the same time. And the three auxiliary movable bodies (32) are in the fixed position (36) in this way.
When the seesaw body (7) accidentally attempts to return to the original position direction when it reaches the position, the auxiliary movable body (32) fits into all the engagement recesses (33), and the seesaw body (7) May be restored to the original position.

However, in the present invention, as described above, the three engaging recesses (33) are formed at random positions so as not to be arranged in parallel with the support shaft (8). Among them, one of the auxiliary movable bodies (32) is located at a position different from the fixed position (36) where the auxiliary movable body (32) is fitted with the engagement concave portion (33). As a result, even if the seesaw body (7) in the locked state attempts to restore to the normal position by vibration, any of the auxiliary movable bodies (32) moved to a position different from the home position (36)
It collides with the bottom wall (15) of the seesaw body (7), and the seesaw body (7)
Is to be surely prevented from being restored.

In the above configuration, in a normal state where no earthquake occurs, as shown in FIG. 6, 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).
And the bottom wall (15) against the base (31), and the upper end of the support wall (13) with the top surface of the fixing plate (3) and the main body.
By hitting (2), the seesaw body (7) is arranged in a horizontal state.

In this normal state, the seesaw body (7) is inserted into three engagement recesses (33) provided on the bottom wall (15).
Auxiliary movable body placed in three long grooves (35) of base (31)
(32) is fitted. On the other hand, the regulating piece (2) on the door (1) side
Reference numeral 0) is engaged and fixed to the step (27) side by the engaging portion (25), and the rotation in the direction of the seesaw body (7) is restricted.

With this arrangement, the engagement piece (18) of the seesaw body (7) does not engage with the restriction 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, intense vibration is applied to the main body (2) and the door body (1).
As shown in FIG. 7, the movable body (10) disposed 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) projecting 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. However, the closed state of the door (1) is maintained.

Further, in the seesaw body (7) of this embodiment, the distance between the other wall (12) and the support shaft (8) is larger than the distance between the one wall (11) and the support shaft (8). The center of gravity of the seesaw body (7) is moved along with the movement of the movable body (10).
(12) It is deviated in the direction, and the restriction piece (2
0) in the direction of engagement. After this rotation, the seesaw body (7) is tilted as shown in FIG. 7, and the movable body (10) is disposed at the lower end in the tilt direction, so that the seesaw body (7) returns to its original position. Restoration is unlikely to occur.

Further, even if the restoration is prevented by the movable body (10), depending on the timing and magnitude of the shaking of the earthquake, etc.
The seesaw body (7) may return to the original position.
However, during the continuation of the earthquake, the restoration prevention mechanism of the seesaw body (7) is in operation, so that the return can be reliably prevented.
That is, during the continuation of the earthquake, the auxiliary movable body (32), which has been disengaged from the engagement recess (33) by the rotation of the seesaw body (7),
It reciprocates integrally in the long groove (35). Even if the three auxiliary movable bodies (32) reciprocate integrally on the coaxial line, as described above, since the three engagement recesses (33) are formed at random positions, three A fixed position where any one of the auxiliary movable bodies (32) can be fitted into the engagement recess (33).
It moves at a different position from (36).

Therefore, even if the seesaw body (7) attempts to rotate in the recovery direction, as shown in FIG. 8, any of the auxiliary movable bodies (32) collides with the bottom wall (15) of the seesaw body (7). Therefore, restoration of the seesaw body (7) to the original position is prevented. Then, during the continuation of the earthquake, the closed state of the door body (1) is maintained, and the opening of the door body (1) due to an impact can be reliably prevented.

After the end of the earthquake, the lock mechanism is released to restore the normal opening / closing operation of the door (1). For that purpose, it is necessary to restore the seesaw body (7), but when the earthquake ends, the movement of the auxiliary movable body (32) that has freely reciprocated in the long groove (35) due to shaking converges, Position (3
Return to 6) naturally. By returning to the home position (36), the auxiliary movable body (32) is brought into contact with the engagement recess (3) of the seesaw body (7).
3) can be fitted. In this embodiment, the long groove is used.
Since the guide tilt (37) is provided in (35), the auxiliary movable body (32) is guided by the guide tilt (37) and
Return to (36) quickly and accurately. Therefore, the engagement recess
(33) can be smoothly fitted, and the unlocking operation can be performed immediately after the end of the earthquake.

With the auxiliary movable bodies (32) thus returned to the home positions (36), the door (1) is strongly opened in the opening direction. By this opening operation, the upper side (29) of the restricting piece (20) strongly hits the engaging piece (18), and the upper side (29) elastically deforms the engaging portion (25) while the locking projection ( 28).

Then, as shown in FIG. 9, the upper side (29) of the regulating piece (20) gets over the engaging portion (25), so that
(20) moves in the direction of the locking projection (28),
After the movement, it is engaged and fixed on the moving side by the locking projection (28) and the engaging portion (25). This movement of the position causes the restriction piece (2
0) is in a state in which contact with the restoring taper (17) and pressing are possible. Incidentally, in this state, as shown in FIG. 9, the door body (1) is slightly opened, but the locked state is not released, so that a normal large opening cannot be performed.

Next, when the door (1) slightly opened by the above-mentioned opening operation is closed, the pressing surface (3) of the regulating piece (20) is opened.
0) comes in contact with the restoration taper (17) of the seesaw body (7) and pushes up the seesaw body (7) as shown in FIG. By this lifting, the seesaw body is supported with the support shaft (8) as a fulcrum.
(7) rotates in the restoration direction. In this rotation, the home position (3
The three auxiliary movable bodies (32) returned to (6) are fitted into the corresponding engagement recesses (33), respectively, so that the restoration of the seesaw body (7) is not hindered. Therefore, the seesaw body (7)
As shown in FIG. 11, the state returns to the horizontal state before the occurrence of the earthquake.

At the time of return of the seesaw body (7), as shown in FIG. 11, there is a gap between the door body (1) and the main body (2), and the door body (1) is completely removed. It is not closed, and the regulating piece (20) is also fixed to the destination. When the door (1) is to be completely closed, the pressing surface (30) of the restricting piece (20) strongly hits the restoring taper (17) by the pressing force, and as shown in FIG. The upper side (29) of FIG. 1) moves over the engaging portion (25) and moves to the original position side. Accordingly, the restricting piece (20) returns to the state before the occurrence of the earthquake as shown in FIG. 6, and the door (1) is completely closed. By returning the restricting piece (20) and the seesaw body (7) to their original positions, the locked state is released, the normal opening / closing operation of the door body (1) becomes possible again, and the state ready for the next earthquake is returned. Become.

As described above, in the present invention, the locked state is not released by the auxiliary movable body (32) due to the effect of preventing the seesaw body (7) from being restored during the continuation of the earthquake.
By maintaining the closure of (1), it is possible to prevent the door (1) from being opened due to the impact of the earthquake. After the earthquake, the door
The locked state can be easily released simply by performing the normal opening / closing operation of (1).

Further, even if the lock mechanism is operated with the door (1) opened, the door (1) can be closed without any trouble, and no special operation or tool is required. The locked state can be easily released.

That is, when an earthquake occurs with the door (1) opened, as shown in FIG. 13, the seesaw body (7) is moved by the movement of the movable body (10) so that the seesaw body (7) is supported by the support shaft (8) as a fulcrum. And the lock mechanism operates on the main body (2) side.
However, since the door body (1) is open, the engagement piece
(18) and the regulating piece (20) do not engage with each other,
(20) also does not move the position, the step portion which is the normal position
It is engaged and fixed to the (27) side.

When the earthquake ends, the auxiliary movable body (32)
When the door body (1) is closed in a state where it has returned to the home position (36), as shown in FIG.
The tip of (18) comes into contact with the pressing surface (30) of the regulating piece (20). In this contact state, as the regulating piece (20) moves in the direction of the main body (2), the engaging piece (18) is gradually pushed up by the tapered pressing surface (30) as shown in FIG. .
And finally, it gets over this pressing surface (30) and
As shown in (1), the engaging piece (18) engages with the regulating piece (20), and the closing of the door (1) is completed.

Therefore, even if an earthquake occurs when the door (1) is opened, the door (1) can be closed without any trouble after the end of the earthquake. 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). 9 to FIG.
By performing the opening / closing operation of the door (1) as shown in (1), the locked state can be easily released, and the normal opening / closing operation of the door (1) can be performed again.

[0068]

As described above, the present invention is constructed as described above, so that the lock mechanism operated at the time of the occurrence of an earthquake is not released by violent vibration or impact of the earthquake, and the door body is maintained during the continuation of the earthquake. The closed state can be reliably continued.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a bottom view showing a positional relationship between a seesaw body and an auxiliary movable body arranged on a base.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a sectional view taken along line BB of FIG. 2;

FIG. 5 is a sectional view taken along line CC of FIG. 2;

FIG. 6 is a sectional view showing a state of a seesaw body and a regulating piece before an earthquake occurs.

FIG. 7 is a cross-sectional view showing a state when an earthquake occurs.

FIG. 8 is a cross-sectional view showing a state in which restoration of a seesaw body is prevented by an auxiliary movable body.

FIG. 9 is a cross-sectional view showing a state in which the regulating piece has passed over the engaging portion by the opening operation of the door body.

FIG. 10 is a cross-sectional view showing a state where the seesaw body is pushed up in the restoring direction by the regulating piece by the closing operation of the door body.

FIG. 11 is a sectional view showing a state in which the seesaw body returns to its original position.

FIG. 12 shows a strong contact between the restoring taper and the restricting piece.
Sectional drawing which shows the state in which the upper side of the control piece passed over the engagement piece in the restoration direction.

FIG. 13 is a cross-sectional view showing a state where the door is closed and an engaging piece is pushed up by a regulating piece when an earthquake occurs when the door is opened.

FIG. 14 is a cross-sectional view showing a state immediately before the engagement piece pushed up by the restriction piece passes over the restriction piece.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door body 2 Main body 7 Seesaw body 8 Support shaft 10 Movable body 18 Engagement piece 20 Restriction piece 25 Engagement part 32 Auxiliary movable body 33 Engagement recess 35 Long groove 36 Fixed position 37 Guide inclination

Claims (6)

[Claims] 1. A door body is connected to a main body so as to be openable and closable, and a seesaw body rotatable around a support shaft is provided on the main body,
In this seesaw body, a movable body is arranged so as to be able to hold the position of the seesaw body so that it is normally disengaged from the regulating piece of the door body, and when an earthquake occurs, the movable body moves on the seesaw body and moves the seesaw body. When the door is unopenable by rotating and engaging the restricting piece of the door body with the seesaw body, the back surface of the seesaw body where the movable body is placed during normal times when no earthquake occurs will be An auxiliary recess is provided in which an auxiliary movable body that is movable at the time of occurrence can be fitted, and a long groove is formed in a main body corresponding to the engaging recess so that the auxiliary movable body can move freely due to earthquake vibration. When the body moves in the long groove due to the earthquake, the back of the seesaw body collides with the auxiliary movable body, making it difficult to restore the seesaw body to the normal position. 2. An auxiliary movable body at the end of the earthquake,
2. The safety device according to claim 1, wherein a guiding slope is formed for guiding to a fixed position corresponding to the engaging recess. 3. The safety device according to claim 1, wherein a plurality of long grooves and engagement recesses in which the auxiliary movable bodies are arranged are formed. 4. A fixed position of a plurality of engaging recesses and auxiliary movable bodies fitted into the engaging recesses is provided at random so as not to be arranged on a coaxial line parallel to a support axis of a seesaw body. 4. The safety device according to claim 3, wherein the safety device comprises: 5. The engagement and disengagement of the seesaw body and the restriction piece is performed by engaging an engagement piece projecting from a side surface of the seesaw body and capable of moving its position with the rotation of the seesaw body during an earthquake. Only the restricting piece can be engaged with the restricting piece to restrict the opening of the door, and the restricting piece can be restricted by the engaging portion so that the position can be moved and restored when a certain force or more is applied. In the state where the engaging piece of the seesaw body and the restricting piece are engaged, the restricting piece moved by applying a certain force or more can press the outer surface of the seesaw body and restore this seesaw body to its original position The safety device according to claim 1, wherein the engagement between the seesaw body and the restriction piece is released. 6. The safety device according to claim 5, wherein the restricting piece reciprocates within a certain movable range by elastically deforming the engaging portion and getting over the engaging portion.