JPH10115141A - Lock device at the time of earthquake - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely lock a hinged door without malfunction of the hinged door at the time of earthquake of a predetermined amplitude or more by using a resin-made device body having a static friction coefficient of a prescribed value or less, provided with a locking part and a resilient part, and a magnet. SOLUTION: A locking means is supported on a resin-made device body 3 whose static friction coefficient is 0.2 or less so as to be moved by the earthquake of a cirtain amplitude or more, and a resilient means 6 is provided on the return path of the locking means 4. At first, the device body 3 is fixed on a furniture and a furniture body 1 such as a hanging cupboard, next, a locking tool 5 provided with a magnet 5c is attached to the locking part 5b of a hinged door 2. When the locking means 4 is swung at a predetermined amplitude or more by earthquake, a locking part 4a is brought into contact with the locking tool 5, when the hinged door 2 is slightly opened, the locking part 4a is fitted to the locking part 5b, and attracted by the magnet 5c. In addition, even if the hinged door 2 is swung in the direction of being closed, the resilient means 6 holds the locking part 4b, and locking is surely performed. After the earthquake, when the hinged door is pushed, the resilient means 6 is retreated, the holder of the locking part 4b is removed, and the locking means 4 is returned to an initial state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinged locking device for a hinged door which operates with little malfunction and reliably.

[0002]

2. Description of the Related Art There has been a demand for a lock device for a hinged door that can be operated reliably with less malfunctions.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned conventional problems and to provide a locking device for a hinged door which can be operated reliably with little malfunction.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a method for locking an earthquake when a vibration means having its own natural frequency is vibrated by the shaking force of an earthquake and has a certain amplitude or more. It proposes a locking device.

[0005]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a locking device according to the present invention. Here, in order to facilitate understanding of the earthquake lock device of the present invention, the principle of the lock is shown in FIG.
10 will be described first. FIG. 1 shows a device for explaining the principle of locking, which device has a device main body (3) fixed to a main body (1) such as furniture or a cabinet. A locking means (4) is supported on the apparatus main body (3) so as to be movable by the sway of the earthquake, and the locking means (4) functions as a sway detecting means for detecting the sway of the earthquake. The locking means (4) has a locking portion (4a) and is stopped at a stopping portion (3a) of the apparatus body (3). Next, a locking member (5) is attached to the hinged door (2), and the locking portion (4a) is locked when the locking means (4) is moved by the shaking force of the earthquake. 5b). On the other hand, an elastic means (6) is provided on the return path (the rear ceiling surface in the illustrated embodiment) of the locking means (4). The operation of the apparatus for explaining the principle described above is as follows. That is, in the closed state where the hinged door (2) is closed as shown in FIG. 1, the locking device (5) on the hinged door (2) side is close to the apparatus body (3) on the body (1) side such as furniture and a hanging cabinet. ing. When an earthquake occurs in this state, Fig. 2
The locking means (4) moves to contact the locking tool (5) as shown in FIG. Further, the swing door (2) as shown in FIG.
Is slightly opened, the locking portion (4a) of the locking means (4) is locked to the locking portion (5b) of the locking tool (5). In this state, the locking part (4a) of the locking means (4) is stopped at the stop part (3a) of the apparatus body (3), and the hinged door (2) is locked at that position. Naturally, the swaying force also acts in the direction of closing the hinged door (2), but the locking means (4) in the locked position.
Are held down by elastic means (6) of the apparatus body (3). Since the pressing force of the elastic means (6) is set to be larger than the swinging force, the locking means (4) stops at that position. Next, when the earthquake is over, to open the hinged door (2), the user strongly pushes the hinged door (2). As a result, as shown in FIG. 4, when the elastic means (6) retreats and retreats by a certain amount or more, the pressing by the elastic means (6) is released. As a result, the locking means (4)
Returns from the state of FIG. 4 to the initial state of FIG. 1 due to inertia.

FIG. 5 shows a device for explaining the principle of locking, which device has the following features in comparison with the device for explaining the principle shown in FIGS. That is, the magnet (5c) is provided on the locking tool (5), and the locking means (4) (preferably a steel and especially a spring steel or the like having a high strength and elasticity) is moved to the locked position by the swaying force of the earthquake. At that time, the position (corresponding to the position in FIG. 2) is held to ensure the operation. Next, the device body (3)
Is supported via a roller R. When the roller R is used in this manner, the frictional force acting on the locking means (4) is greatly reduced, and the sensitivity for detecting earthquakes is improved. Next, a coil spring is provided as the elastic means (6) in the front-rear direction (having a vertical inclination), and the lower edge of the front end of the coil spring retreats with the retraction of the locking means (4) and is locked at a predetermined retreat position. To enable the locking means (4) to return to the initial state. Next, as an important feature of the illustrated one, the incorporation of the magnet catch (7) is selectable. That is, the magnet catch (7) can be easily incorporated into the apparatus main body (3) by a shaft or the like, and can be used without the magnet catch (7).
It is an important feature that the magnet catch (7) can be easily incorporated, and that the magnet catch (7) can be selected depending on the application, for example. In the illustrated embodiment, for example, a magnet catch (7) is incorporated in the front of the apparatus body (3) in a state of being vertically stacked with a lock mechanism. When there is a magnet catch (7), the hinged door (2) can be stopped to the limit of the attraction force of the magnet catch (7) and locked in a stationary state, so that the locking can be performed more reliably. Magnet catch (7) (magnet (7a) and magnetic plate (7
b)) The suction plate (8) is a latch (5) on the hinged door (2) side.
Together with the hinged door (2).

FIG. 6 shows a device for explaining the principle of locking, which device has the following features in comparison with the device for explaining the principle shown in FIGS. That is, there is an important feature in that the door stop (9) such as rubber, spring, and elastic material is incorporated in the device itself. The door stop (9) is attached to the locking device (5) on the hinged door (2) side in the drawing, and comes into contact with the front of the apparatus main body (3) on the main body (1) side such as furniture and a hanging cabinet. In addition to the buffering function of the hinged door (2), it also bears the closing positioning function. In this way, when the locking device itself at the time of the earthquake has the closing positioning function, the locking mechanism exerts a very important effect that the positioning of the lock is ensured. FIG. 7 shows a device for explaining the principle of locking, which device has the following features in comparison with the device for explaining the principle shown in FIGS. That is, there is an important feature in that the earthquake locking device is mounted at a position away from the free end of the hinged door (2) to the hinge side. When installed on the free end of the hinged door (2), the hinged door (2) moves far from the hinge (particularly when the hinged with spring is used to secure the closing force of the hinged door (2) without using a magnet catch). This is because there is a case where the lock mechanism becomes most unstable for the lock mechanism. When the locking device for an earthquake is mounted at a position away from the free end of the hinged door (2) toward the hinge side, the movement of the hinged door (2) is reduced, so that the lock mechanism is securely locked. This is a very important effect of securing the lock if you want to reduce costs without a magnet catch. FIG. 8 shows a device for explaining the principle of locking,
The apparatus has the following features as compared with the apparatus for explaining the principle shown in FIGS. That is, the locking means (4) does not have the bent locking portion (4a), and the end extending from the main body (4b) functions as the locking portion (4a).

Further, the rear end of the storage chamber (for storing the locking means (4)) of the apparatus body (3) is formed with an inclined surface (3g) so as not to be rebounded when the locking means (4) returns. You. If the locking means (4) does not have the bent locking portion (4a), the locking width of the locking portion (5b) provided on the locking tool (5) is substantially increased, and the magnet is magnetized. There is a feature that the door (2) having only the hinge with spring without using the catch has a margin and locks even if the door (2) slightly starts opening and closing at the start of the earthquake. FIG. 9 shows a device for explaining the principle of locking, which device has the following features in comparison with the device for explaining the principle shown in FIGS. That is, the attachment of the locking member (5) to the hinged door (2) is performed not at the upper part but at the mounting part (5a) bent downward, so that the projecting dimension of the locking member (5) is reduced. It is possible to reduce it. FIG. 10 shows a device for explaining the principle of locking, which device has the following features in comparison with the device for explaining the principle shown in FIGS. That is, the upper end of the locking tool (5) has an inclined surface (5e). In this case, the locking means (4) is locked even if the hinged door (2) is open for some reason. When the hinged door (2) is being closed in this state, the locking means (4) can be lifted up on the inclined surface (5e) and guided to the locking portion (5b). Further, as compared with FIG. 5, a magnetic shielding plate (7c) made of a magnetic material such as a steel plate has a slight gap behind the magnetic plate (7b) of the magnet catch (7), It is attached to the apparatus main body (3) with a size about the right and left dimensions or larger. In this case, the magnet catch (7) is locked by the locking means (4).
It is possible to prevent (in the case of a magnetic body) from being pulled by magnetic force and malfunctioning. The magnetic shielding plate (7c) has a little gap behind the magnetic plate (7b) of the magnet catch (7) because the magnetic force is almost the same as that of the attracting plate (8) when the attracting plate (8) is attracted. This is because the magnetic force becomes an attraction force (since the magnetic force passes through the attraction plate (8)), and the influence on the magnet catching force becomes small. 11 and 12 show a seismic locking device according to the invention, the seismic locking device being particularly shown in FIG.
Compared to the seismic locking device shown at 0 (similar), it has the following features. That is, the locking device at the time of the earthquake is horizontal and the locking means (4) moves forward during the earthquake and the locking device (5).
Is pulled (not by gravity) by the magnet (5c). If the locking device is turned sideways in the event of an earthquake, the locking means (4) and the locking tool (5) can be engaged even when the hinged door (2) hangs down for a long period of use (by the hinge). There is a feature. When the locking device during an earthquake is turned sideways, the device body (3) is made of a polyacetal resin or the like having a static friction coefficient of 0.2 (0.2 times of 980 gal is approximately 200).
In galle, this corresponds to a maximum acceleration of seismic intensity 5.3 or so, and the door lock should be operated at least above this seismic intensity). . Next, a magnet catch (7)
Has two magnets (7a) and (7a) housed in a U-shaped magnetic plate (7b), and two plate-shaped magnetic plates (7d) and (7d) are sandwiched between them. Two magnetic plates (7
d) (7d) extends rearward through the opening on the back surface of the magnetic plate (7b), and is attached to the apparatus main body (3) by a shaft (7e). The magnetic plates (7d) and (7d) and the magnetic plate (7b) are prevented from being magnetically short-circuited by the separator (7f). Claws are provided at the tips of the magnetic plates (7d) and (7d) to prevent the magnets (7a) and (7a) from coming off. Next, the locking means (4) is provided with projections on both sides at its rear end to serve as stoppers (4g) and stops by engaging with the stoppers (3h) on the inner wall steps on both sides of the apparatus body (3) (locking force is exerted). Is done. Next, the device main body (3) is provided with a vibrating means composed of a vibrating path (11) and a vibrating body (10) (this is merely an example, but in the illustrated example, the vibrating path (11) has a curved surface and a vibrating body. (10) shows a ball of steel, plastic, or the like). As the vibrating means, a spring vibrating means such as a leaf spring or a coil spring, a suspended pendulum vibrating means, or the like can be applied. In a state without an earthquake, the vibrating body (10) is stationary at the stable position shown in FIG. 11 and does not contact the locking means (4). However, during an earthquake, the vibration means (the vibrating body (10)) vibrates, and if its natural frequency is set to, for example, about 1.75 Hz, the vibration means resonates with an earthquake shake (often about 1 to 3 Hz). The vibrating means does not move very much against shocks other than earthquakes (having many high-frequency components) and the like, thereby preventing malfunction. In any case, when the vibration increases, the vibrating means (vibrating body (10)) comes into contact with the locking means (4) and starts to move (when the movement starts, the friction changes from static friction to dynamic friction and the friction coefficient is considerably large). descend). That is, it means that the locking means (4) starts the locking operation, whereby the locking means (4) is attracted by the magnetic field formed by the magnet (5c) and the magnetic plate (5f), and is brought into the locked state. The fact that the magnetic plate (5f) is L-shaped and its rising portion is located in front of the locking means (4) means that a gentle (easy to adjust) magnetic field is formed and the linear shape of the locking means (4). It plays an important role of being absorbed by movement. The locking means (4) itself may also serve as the vibration means (the locking means (4) itself vibrates). Further, a vibration means may be incorporated in the locking means (4) by a method such as a built-in method or an attachment method. Next, the locking device (5) is composed of a base body A and an end body B, and they are connected by screws C.
The end body B can be moved and adjusted up and down by 1 (in practice, the up and down direction in FIG. 11 is right and left because the device is horizontal). This facilitates the installation work on site and also adjusts the sensitivity to the shake of the earthquake by changing the attraction force of the locking means (4) due to the magnetic force of the magnet (5c). FIG. 13 shows a seismic locking device according to the present invention. The seismic locking device is similar to the devices shown in FIGS. 11 and 12 and includes a vibration means comprising a vibrating path (11) and a vibrating body (10) in a device main body (3). Is provided. The vibrating means shown in the drawing is one in which a sphere vibrates on a curved surface and has its own natural frequency. The vibrator (10) is stationary at the stable position shown in FIG. 13 in a state without an earthquake, and is separated from the locking means (4). However, in the event of an earthquake, vibration means (vibrating body (10))
Vibrates, and if its natural frequency is set to, for example, about 1.75 Hz, it will resonate in response to an earthquake shake (often about 1 to 3 Hz). The vibrating means does not move very much against shocks other than earthquakes (having many high-frequency components) and the like, thereby preventing malfunction. In any case, when the vibration increases, the vibrating means (vibrating body (10)) hits the stopper (6b) that stops the locking means (4) (see FIG. 14). That is, when hit, the stopper (6b) is released from the locking means (4), and the locking means (4) projects from the apparatus main body (3) by the force of the elastic means (6a) (see FIG. 15). The elastic means (6a) in the illustrated embodiment is a coil spring and is fitted on the outer periphery of the stopper (6b). The storage chamber (3b) of the apparatus main body (3) is moved to the stopper (6) by the force of the elastic means (6a).
It is inclined so that a component force acts on b). That is, the storage chamber (3b) is moved to the stopper (4) side by the stopper (6b).
It is inclined so that it approaches. Therefore, during normal use without an earthquake, the stopper (6b) is shifted toward the locking means (4), and the locking portion (4h) of the locking means (4)
(See FIG. 16).
a) is also approaching). In this state, the stopper (6b)
Is a locking tool (5) (see FIG. 16) fixed to the hinged door (2) without projecting from the apparatus main body (3), and a locking means (4).
The opening and closing cannot be disturbed. Next, at the time of an earthquake, the vibration means (the vibrating body (10)) vibrates, and if the natural frequency is set to, for example, about 1.75 Hz, the vibration of the earthquake (often 1 to 1 Hz)
(About 3 Hz). When the vibration means is vibrated by the shaking force of the earthquake and has a certain amplitude or more, the stopper (6b) comes into contact with the stopper (6b) and the stopper (6b) comes off, and the locking means (4) protrudes by the force of the elastic means (6a). It is on the street. As a result, the locking means (4) blocks the locking tool (5) to prevent the opening of the hinged door (2) and lock. To release the lock, the elastic means (6a) is compressed by pushing the protrusion of the locking means (4) by hand, and at the same time, a force acting on the stopper (6b) toward the locking means (4) acts. When the locking means (4) is pushed up to the position shown in FIG. 13, the state where the stopper (6b) is locked to the locking portion (4h) of the locking means (4) (the state shown in FIG. 13) is restored. Will be retained. FIG. 17 shows an earthquake locking device according to the present invention, wherein the locking means (4) shown in FIG. FIG. 18 shows an earthquake locking device according to the present invention, which is similar to FIG. The shape of the tool (5) is different.

[0009]

The embodiment of the earthquake locking device according to the present invention is as described above, and its effects are listed below. (1) The earthquake locking device of the present invention is particularly effective when the vibration means having its own natural frequency is vibrated by the trembling force of the quake and has a certain amplitude or more to perform the locking operation. Can be identified, and it operates reliably with less malfunction. (2) The locking device in the event of an earthquake of the present invention is particularly secure when at least the device body is formed of a resin material such as polyacetal resin having a static friction coefficient of 0.2 or less.

[Brief description of the drawings]

FIG. 1 is an explanatory view of the principle of a lock for facilitating the understanding of an earthquake lock device of the present invention.

FIG. 2 is an operation state diagram of the same.

FIG. 3 is an operation state diagram of the same.

FIG. 4 is an operation state diagram of the above.

FIG. 5 is a conceptual diagram of another lock device for facilitating the understanding of the earthquake lock device of the present invention.

FIG. 6 is a conceptual diagram of another seismic lock device for facilitating the understanding of the present invention.

FIG. 7 is a conceptual diagram of another locking device for earthquake in order to facilitate understanding of the above.

FIG. 8 is a conceptual diagram of another locking device for earthquake in order to facilitate understanding.

FIG. 9 is a conceptual view of another earthquake locking device for facilitating the understanding.

FIG. 10 is a conceptual diagram of another seismic lock device for facilitating the understanding of the present invention.

FIG. 11 is a plan cross-sectional view of an earthquake locking device according to the present invention.

FIG. 12 is a sectional plan view showing an operation state of the locking device during an earthquake of FIG. 11;

FIG. 13 is a side sectional view of another earthquake locking device of the present invention.

14 is a side sectional view showing an operation state of the locking device in case of an earthquake in FIG. 13;

FIG. 15 is a side sectional view showing an operation state of the locking device during an earthquake of FIG. 13;

FIG. 16 is a perspective view of a locking means and a locking tool of the earthquake-time locking device of FIG. 13;

FIG. 17 is a side sectional view of another earthquake locking device of the present invention.

FIG. 18 is a side sectional view of another earthquake locking device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Door 3 Device main body 3a Stop part 3b Storage room 3e Supporting means 3f Shaft 3g Inclined surface 3h Stopper 4 Locking means 4a Locking part 4b Main body 4c Hole 4d Arm 4e Magnet 4f Spring 4g Stopper 4h Locking part Tool 5a Mounting part 5b Locking part 5c Magnet 5e Inclined surface 5f Magnetic plate 6 Elastic means 6a Elastic means 6b Stopper 7 Magnet catch 7a Magnet 7b Magnetic plate 7c Magnetic shielding plate 7d Magnetic plate 7e Shaft 7f Separator 8 Attraction plate Door stop 10 Vibration body 11 Vibration path 19 Screw A Base B End body C Screw R Roller

Claims (2)

[Claims] 1. An earthquake locking device which locks when a vibration means having its own natural frequency is vibrated by the swaying force of an earthquake and has a certain amplitude or more. 2. A seismic locking device in which a locking means movably supported by the swaying force of an earthquake moves to a lock position of a hinged door during an earthquake. A resin material such as polyacetal resin having a static friction coefficient of 0.2 or less. Locking device at the time of earthquake that formed at least the device body with