JP2520147Y2 - Storage door opening / closing mechanism - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door opening / closing mechanism in a storage such as a fireproof safe.

[0002]

2. Description of the Related Art Many of the conventional storages and the like are equipped with, for example, a dial lock and a handle, and after rotating the dial of the dial lock to release the fixing of the bar member, the handle is rotated to rotate the bar member. Pull out the tip of the from the lock hole,
Then, the door is opened by pulling the handle.

[0003]

However, in the case of the conventional storage as described above, it is necessary to match the unlocking number with the dial and pull while rotating the handle, which makes the door opening operation troublesome. Also, when closing the door, it is necessary to close the door with the handle, rotate it, insert the tip of the barb member into the lock hole, and further rotate the dial of the dial lock to fix the barb member. This is a troublesome operation. Furthermore, there is a problem that the dial lock and the handle stick out, and the design is not neat.

The present invention has been made to solve the above-mentioned problems, and its purpose is a relatively simple mechanism that can automatically open the door at the same time as unlocking, and only closes the door. It is an object of the present invention to provide a door opening / closing mechanism of a storage which can be automatically locked by the above and can eliminate a protruding portion such as a handle.

[0005]

DISCLOSURE OF THE INVENTION The present invention provides a latch member, the tip of which is slidably provided on a door so that it can be inserted into and removed from a lock hole of a storage main body, and which is urged toward the lock hole by a latch spring. A drive lever having an intermediate portion pivotally attached to the door body and capable of moving the latch member in a direction to separate from the lock hole by rotation; and a drive lever connected to one end side of the drive lever for rotating the drive lever to rotate the latch member. An actuating spring for moving the member in the direction of separating from the lock hole, a latch member that is detachably engaged with the other end of the drive lever, and can prevent rotation of the drive lever by the actuating spring, and a normal lock. (For example, an electronic lock), a drive device such as a solenoid that can disengage the latch member from the other end side of the drive lever, and a slidably provided on the door body so that the tip can abut the storage body, The operation It is obtained by composed of a push rod which is biased in the abutting direction by Ne. Further, an unlocking metal fitting that operates by an emergency lock (for example, a cylinder lock) is connected to the base of the latch member.

[0006]

When a drive device such as a solenoid is operated by a normal lock, the latch member is disengaged from the engaging portion of the drive lever,
The drive lever is rotated by the actuating spring to move the latch member in the direction of separating from the lock hole, and the tip of the latch member separates from the lock hole of the storage body. When the latch is no longer locked, the push bar urged by the storage cabinet body is pushed out by the operating spring, and the door is automatically opened by the reaction force. The door can be opened automatically when unlocked.
When the door is completely opened, the push rod is completely pushed out, the setting force of the operating spring is lost, the drive lever rotates and returns to its original position, and the engaging portion of the drive lever engages with the latch member. At the same time, the latch member is in a state of protruding from the door body. When the door body is closed from this state, the push rod is pulled into the door body by the storage body, and the original setting force is introduced into the operating spring. Since the latch member can slide independently, it automatically enters the lock hole. The door can be locked automatically and the setting for the next door opening can be automatically performed. Even if a trouble that the normal lock cannot be used occurs, the latch member can be released from the lock hole and the door can be automatically opened by operating the unlocking metal fitting by the emergency lock.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an illustrated embodiment. This is an example applied to a fireproof safe, and the fireproof safe comprises a safe body 1 and a door body 2 as shown in FIG. 4, and a door opening / closing mechanism is provided inside the door body 2. As shown in FIGS. 1 to 3, the door opening / closing mechanism of the present invention comprises an unlocking / automatic locking mechanism A, an automatic door opening mechanism B, and an emergency door opening mechanism C. The unlocking / automatic locking mechanism A mainly includes a latch member 3, a latch spring 4, a drive lever 5, an operating spring 6,
It is composed of a latch member 7 and a solenoid 8. The automatic door opening mechanism B mainly includes a push rod 9, a push rod fitting 10, and a drive lever 1.
1. The operating spring 6 is used. The emergency door mechanism C mainly includes a cylinder lock 12, a lock lever 13, and an unlocking metal fitting 14.
It consists of.

The latch member 3 is composed of a latch bar 15 at the front end and a latch metal fitting 16 at the base.
The tip of the latch bar 15 is inserted into the support metal fitting 17 provided in the frame portion of the box so as to be slidably supported.
The lock hole 18 (see FIG. 4) can be inserted and removed. Further, the latch metal fitting 16 and the support metal fitting 17 are connected by the latch spring 4 formed of a tension coil spring, so that the latch member 3 is always biased in the direction in which the latch bar 15 is inserted into the lock hole 18. Further, a sloped surface 15a (see FIG. 3) is formed at the tip of the latch bar 15 so that the latch bar 15 can be smoothly inserted into the lock hole 18 when the door is closed.

The drive lever 5 has a support shaft 19 at an intermediate portion thereof.
By attaching the door member 2 to the door body 2 through the door 2, the vertical plane can be swung freely, and the latch member 3 can be moved in the direction to be detached from the lock hole 18 by rotating in a clockwise direction in FIG. To That is, as shown in FIG. 5, an engaging piece 16a is provided in a projecting manner on the plate-like latch metal fitting 16 and is provided under the support shaft 19 of the drive lever 5b.
Allow points to engage. Further, a stopper metal fitting 20 having a contact rubber 20a is attached to the rear side of the latch metal fitting 16 to prevent the latch member 3 from being pulled in more than necessary. Further, the support shaft 19 of the drive lever 4 is inserted into the guide hole 16b formed in the latch metal fitting 16 so that the latch member 3 can be pulled in independently.

Below the point b of the drive lever 5 as described above, one end of an operating spring 6 composed of a tension coil spring is connected at point c (see FIG. 5), and the pulling force of the operating spring 6 causes the drive lever 5 to move. It is possible to rotate from the solid line position in FIG. 1 to the two-dot chain line position. The tensile force of the operating spring 6 is set to be larger than the tensile force of the latch spring 4. The other end of the operating spring 6 has a door automatic opening mechanism B as described later.
So that both the drive lever 5 and the drive lever 11 can be operated. Further, it is preferable that a balance weight 21 is attached to the lower end of the drive lever 5 on the side opposite to the lock hole so that when the tensile force of the actuating spring 6 disappears, the two-dot chain line position can be easily returned to the solid line position.

The latch member 7 is a member that engages with the upper end of the drive lever 5 to prevent the latch member 3 of the drive lever 5 from retracting and moving. And the hook 7a at the tip is locked at point a at the upper end of the drive lever (see FIG. 5). Further, a latch spring 23, which is a tension coil spring for pulling up the base portion, is connected to the base portion of the latch member 7 so that the locking by the hook 7a is held. The other end of the latch spring 23 is connected to the stopper fitting 24. Also, the hook 7a
In the lower part on the front end side, a sloped surface 7b having a downward slope toward the rear end is formed. A tip of a movable shaft 8a of a solenoid 8 is pivotally attached to the tip of the latch member 7, and when the solenoid 8 operates, the movable shaft 8a rises to lift the tip of the latch member 7 and the latch member 7 and the drive lever. 5 is disengaged. The normal lock for operating the solenoid 8 is an electronic lock such as a numeric keypad lock or a card lock (not shown), and when an unlocking number is entered with the numeric keypad or a card,
The solenoid 8 is activated by a controller (not shown). The control device is well known, and compares the input unlocking number with the registered unlocking number, and when they match, the solenoid is excited, and when the energization time (1 to 2 seconds) set by the timer elapses, it is excited. Is configured to solve. A battery such as a solenoid is installed inside the door.

The push rod 9 of the automatic door opening mechanism B is a safe body 1.
Door 2 by pressing the sloped surface 1a (see FIG. 3) of the smoke return section
Is a member for opening and is inserted into a support metal fitting 25 provided on a frame portion on the hinge side of the door body 2 so as to be slidably supported and fixed to the tip of the push rod metal fitting 10. Push rod fitting 10
Is slidable by the guide holes 10a arranged at intervals and the support shaft 26 inserted in the guide holes (see FIG. 6). The drive lever 11 is swingable in the vertical plane by attaching the middle portion of the drive lever 11 near the lower end to the door body 2 via the support shaft 27, connects the other end of the operating spring 6 to the upper end, and connects the lower end to the pin 28. It is connected to almost the central portion of the push rod fitting 10 via. As for the operating spring 6, the drive levers 5 and 11 are shown in FIG.
It is designed to be almost free length in the two-dot chain line state. Further, a roller bearing 29 is horizontally attached to the tip of the push rod 9 so that the door can be lightly closed when the door is closed.

The cylinder lock 12 of the emergency door mechanism C is provided, for example, on the upper portion of the door body 2, and has a lock lever 13 and an unlocking metal fitting 1.
The latch member 3 can be pulled in and moved via the terminal 4. The lock lever 13 has its base attached to the rotary shaft 12a of the cylinder lock 12 and has its tip connected to the upper end of the unlocking metal fitting 14 via the pin 30 and is rotated by the key 31 to rotate the rotary shaft 12a.
Is converted into the slide of the unlocking metal fitting 14. The unlocking metal fitting 14 is slidable by a guide hole 14a arranged at a distance and a support shaft 32 inserted in this guide hole, and the latch member 3 is retractable and movable by a spring 33. . The protruding portion 14b at the tip is engaged with the engagement piece 16c of the latch metal fitting 16 (see FIG. 5).

The above-described structure operates as follows. [Unlocking / Automatic Door Opening] (1) When an unlocking number is entered with the ten-key pad or a card is inserted into the input device, the solenoid 8 is actuated, the tip of the latch member 7 is lifted, and the hook 7a and the drive lever 5 are operated. The upper end is disengaged. Since the drive levers 5 and 11 are in the solid line state in FIG. 1 when the door body 2 is closed, a predetermined tensile force is introduced to the operating spring 6, and when the engagement is disengaged, the operating spring 6 drives it. The lever 5 is pulled and rotated, the latch member 3 is retracted and moved, and the stopper fitting 2
Stop at 0. (2) On the other hand, the push rod 9 is driven by the actuating spring 6 to drive the drive lever 1
1. It is pressed against the sloped surface 1a of the smoke return part of the safe main body 1 via the push rod metal fitting 10, and the latch bar 15 has a lock hole 18
Upon exiting from the door 2, the door body 2 is automatically opened by the reaction force of the pressing force of the push rod 9 by the operating spring 6. (3) Perform necessary work by further opening the door body 2 by hand, but when the door body 2 is opened and the push rod 9 is completely pushed out from the door body 2, the operating spring 6 contracts to a free length. Then, the pulling force is lost, and the driving lever 5 is returned to the original position by the pulling force of the latch spring 4 and the balance weight 21. At this time, since the energization time of the solenoid 8 is set to 1 to 2 seconds, the latch member 7 is returned to the original position where the tip is lowered by the latch spring 23, and the upper end of the drive lever 5 moves along the sloped surface 7b. It slides and is locked by the hook 7a, and the drive lever 5 is automatically returned. Further, the latch member 3 is also held in a protruding state by the pulling force of the latch spring 4.

[Automatic Lock] (1) When the door body 2 is closed, the push rod 9 is pushed by the sloped surface 1a of the smoke return portion of the safe main body 1 and retracted. When the push rod 9 is retracted, the drive lever 11 is rotated by the slide of the push rod fitting 10 to the push rod side, and the operating spring 6 is pulled. Since the drive lever 5 is locked by the latch member 7, the operating spring 6
A predetermined tensile force before actuation is introduced into. (2) Since the latch member 3 can be independently slid using the support fitting 17, the support shaft 19, and the guide hole 16b as guides,
When the door body 2 is closed, it is retracted by the action of the inclined surface 15a, and then the latch spring 4 enters the lock hole 18. As described above, the setting for the next unlocking / automatic opening is automatically performed, and the door is locked automatically.

[Emergency Door] If a problem occurs with the electronic lock or the battery installed in the safe runs out, insert the key 31 into the cylinder lock 12 and rotate it. For example, the lock lever 13 rotates, the unlocking metal fitting 14 slides left and right through the pin 29, the latch member 3 is pulled in, and the latch bar 15 is disengaged from the lock hole 18. Similar to the normal unlocking, the door body 2 is automatically opened by the reaction force of the pressing force of the push rod 9 by the operating spring 6.

As shown in FIG. 5, in the drive lever 5, by making the ad dimension larger than the db dimension, the force of the actuating spring 6 acts on the solenoid 8 as a small force by the lever principle, and the solenoid 8 is actuated. Easy to operate. As a result, a solenoid that operates with a small voltage can be adopted, and it is possible to cope with the voltage drop of the battery. Since the dc dimension is longer than the db dimension, the force of the actuating spring 6 for removing the latch bar 15 can be reduced. Further, since the ef dimension shown in FIG. 6 is made larger than the fg dimension, even if the push rod is retracted small, the actuating spring can be greatly stretched, and a large force for automatically opening the door can be accumulated.

[0018]

As described above, according to the door opening / closing mechanism of the present invention, the latch member that can be inserted into and removed from the lock hole of the storage cabinet is urged toward the lock hole, and the drive lever urged by the operating spring is actuated. Locked by a latching member that operates with a normal lock, the push bar that contacts the storage body is urged in the contact direction by the operating spring, and the latch can be removed from the lock hole with an emergency lock. Therefore, the following effects can be obtained. (1) The door can be automatically opened at the same time as unlocking with the ordinary lock, and the door can be easily and easily opened. (2) Only by pushing and closing the door, the operation for locking and unlocking the door can be automatically performed, and the door can be easily and easily closed. (3) The handle for opening and closing the door is unnecessary, and the product design can be simplified. (4) Even if there is a problem with the normal lock, it can be opened with the emergency lock. When an electronic lock is used for the ordinary lock, the battery can be installed inside the refrigerator, the structure can be simplified, the battery storage space is not required outside the refrigerator, and a flexible design is possible.

[Brief description of drawings]

FIG. 1 is a front view showing a door opening / closing mechanism of the present invention.

FIG. 2 is a side view of the door body of the present invention.

FIG. 3 is a plan view of a door body of the present invention.

FIG. 4 is a sectional view showing an example in which the door opening / closing mechanism of the present invention is applied to a fireproof safe.

5 is a front view showing an unlocking / automatic locking mechanism of the door opening / closing mechanism of FIG. 1. FIG.

6 is a front view showing an automatic door opening mechanism of the door opening / closing mechanism of FIG. 1. FIG.

[Explanation of symbols]

 A Unlocking / Automatic locking mechanism B Automatic door opening mechanism C Emergency opening mechanism 1 Safe body 2 Door body 3 Latch member 4 Latch spring 5 Drive lever 6 Actuating spring 7 Latch member 8 Solenoid 9 Push rod 10 Push rod metal fitting 11 Drive lever 12 Cylinder lock 13 Lock lever 14 Unlocking metal fitting

Claims (2)

(57) [Scope of utility model registration request] 1. A latch member, the tip of which is slidably provided on a door so that it can be inserted into and removed from a lock hole of a storage body, and a biasing member is biased toward the lock hole by a latch spring, and an intermediate portion is attached to the door body. A drive lever that is attached to the shaft and can rotate to move the latch member in a direction to separate from the lock hole, and a direction that is connected to one end side of the drive lever and rotates the drive lever to separate the latch member from the lock hole. To the other end of the drive lever, and a latch member that can prevent the drive lever from rotating due to the actuating spring; and a latch for normal operation to lock the latch member. A drive device that can be disengaged from the other end of the drive lever, and a push rod that is provided slidably on the door body so that the tip of the drive lever can abut the storage body, and is urged in the abutment direction by the operating spring Characterized by A door opening / closing mechanism for the storage. 2. The door opening / closing mechanism for a storage according to claim 1, wherein an unlocking metal fitting that operates by an emergency lock is connected to the base of the latch member.