JPH0358432B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a locking device for opening and closing the door of a safe which is electrically locked using a solenoid (electromagnetic) mechanism. Regarding the manual release mechanism.

(Prior art) The power saving mechanism in this type of safe door opening/closing lock device electrically energizes a solenoid (electromagnet) only for a very short time when the door is opened, and then maintains the unlocked state. As shown in FIGS. 6 to 8, the iron core 4 of the solenoid 3a in the extended state, which conventionally obstructed the retraction (unlocking) of the bolt 17a,
a is attracted and retracted by applying electricity for a certain period of time (approximately 4 seconds), and during that time the bar rod 17a is slid back and the receiving part 3
The metal door is opened by receiving the end face of the iron core 4a with the spring 5a and preventing the iron core 4a from moving forward again after the current is cut off.

(Problems to be Solved by the Invention) In this way, in the conventional safe door opening/closing lock device, the bar lever is brought into direct contact with the iron core of the solenoid (electromagnet) and the door is opened by sliding.
Because other parts (barrels) are brought into direct sliding contact with a relatively soft iron core, the iron core is damaged and the durability of the lock mechanism is significantly shortened.

In addition, conventional door opening/closing lock devices have the disadvantage that if you forget the password to unlock the safe, or if the electrical operation part breaks down, the door cannot be opened without destroying the safe. .

This invention improves these points in many ways.

(Means for Solving Problems) This invention is a locking device that uses a solenoid (electromagnet) to open and close the door of a safe. The locking member is pivotally mounted so that the locking member is rotated and locked in synchronization with the locking member that is attracted by the temporary energization operation, and the suction state of the locking member is maintained;
The rear end of the bar member, which is arranged to slide in a direction intersecting the restraining member, is introduced into and engaged with the open receiving groove provided on the intersecting surface of the restraining member in the suction position, and the rear end is This locking device for opening and closing a door is characterized in that the locking member is pushed back in the opposite direction to release the locking member from the restraining member.

Furthermore, in addition to the above-mentioned means, it is equipped with a keyhole, and a rotating pawl linked to the keyhole allows the locking member to be latched to the suction state, thereby providing a mechanism that enables manual release of the lock. be.

(Function) The safe door opening/closing lock device of the present invention locks the restraining member with the locking member that rotates in synchronization with the suction operation when the restraining member attached to the iron core of the solenoid is temporarily energized. to temporarily secure the suction state of the restraining member, and at the same time introduce and engage the rear end of the retracted lock member into the open receiving groove provided at the position where the restraining member in the suction state intersects with the bolt member. , Push the locking member that is engaged with the locking member at the rear end of the barb member backwards to remove it, and return the restraining member by the restoring member (spring) of the de-energized solenoid at the rear end of the barb member. The door can be opened by automatically suppressing the rise.

Next, to close and lock the door, move the bar forward and fit it into the recess of the safe body.
The rear end comes off from the open receiving groove of the restraining member, and the released restraining member returns and rises, and the part of the restraining member that is displaced from the open receiving groove abuts the rear end of the lock member to lock its movement back. and lock the door in the closed state.

Furthermore, the same interlocking action as described above can be operated manually by forcibly latching the stopping member to the lowered state without using electricity using a rotating pawl provided to interlock with the keyhole. be.

(Example) Next, a specific example of the present invention will be described using the drawings.

In the figure, 3 is a conventional general solenoid (electromagnet) that is electrically operated for a certain period of time and is operated by a dry battery 33, and is mounted on the back side board of the door 2 of the small safe main body 1.
Reference numeral 4 designates the iron core of the solenoid 3, which is provided with a restoring force by a spring 5, and is fixedly connected to a horizontal piece of a plate-shaped restraining member 6 formed in an inverted L shape on the upper side.
The vertically elongated guide holes 11, 11 are supported by guide shafts 12, 12 on the door 2 substrate so as to slide up and down along with the vertical movement of the door 2. A rising side 7 facing the board is provided on the outer side of the vertical piece of the restraining member 6, and an open receiving groove 8 cut horizontally from the rising side 7 and having a vertical play width is provided on the upper side of this vertical piece. At the bottom, an engaging hole 9 penetrating in the left-right direction on the rising edge 7 and a hook 10 projecting outward are provided. The upper end of the locking member 13 arranged so as to overlap inside the restraining member 6 is pivotally connected to one of the upper guide shafts 12, and the claw portion 14 at the lower end is constantly pushed toward the rising side 7 by a spring 16. A push shaft 15 is implanted on the side surface of the stop member 6 at the center of the stop member 13.

A bar member 17 is disposed so as to be arranged side by side with the restraining member 6 and the locking member 13 when viewed from the front, and located outside the restraining member 6 when viewed from above, so as to be able to slide from side to side.
The horizontally elongated guide hole 20 is supported by the guide shaft 21 on the board, intersects with the restraining member 6 in a plan view at the lower rear of the bolt member 17, and is inserted into the open receiving groove 8 of the restraining member 6 which is sucked down by energization. The elbow portion 18 is provided to protrude in the horizontal direction at a position. A sliding hole 22 is provided in the body of this bolt member 17 and is long in the left and right directions and has ample space in the vertical direction. Connect the operating shaft 27 implanted on the other end of the crank 25 to the lock member 1.
The opening spring 28 to the operating shaft 27 is engaged with the operating hole 23 that has ample space above and below, and the crank 25 is operated by rotating the rotation knob 24 to pull the bolt member 17 left and right and slide it. The engagement pushes the operating shaft 27 downward to smooth the crank movement.

With such a configuration, the solenoid 3 is temporarily energized to suction the iron core 4 downward against the elastic force of the spring 5 and lower the restraining member 6, so that the spring 16 is constantly applied to the inside of the rising side 7. The claw portion 14 of the locking member 13 mounted on the push-support pivot automatically engages with the engagement hole 9 on the rising side 7 of the lowered restraint member 6, so that even after the solenoid 3 is de-energized, Strictly suppress the advance and restoration of iron core 4,
In this lowered state, the elbow part 18 of the barb member 17 and the open receiving groove 8 of the restraint member 6 are lined up on the same plane to release the restraining lock mechanism, and turn the rotation knob 24 to move the barb member 17 rearward. Introducing the elbow part 18 into the open receiving groove 8 and letting it escape, and in the process of introducing the elbow part 18
At 8, the push shaft 15 of the locking member 13 is pushed back in the opposite direction against the spring 16 to disengage the claw portion 14 from the engagement hole 9 of the locking member 6, thereby releasing the elbow portion 18.
The restraining member 6 is raised by the repulsive force of the spring 5 by the vertical play width in the open receiving groove 8, and the elbow portion 18 engages with the open receiving groove 8 so that it can be inserted and extracted, thereby fixing the restraining member 6 in the lowered state. The door can be opened.

When closing the door, the lock member 17 is moved forward by turning the rotary knob 24 and the tip 19 of the lock member 17 is fitted into the receiving recess of the safe body 1, so that the rear end elbow 18 is locked into the locking member 6. The opening receiving groove 8 of the restraining member 6 that has come out of the opening receiving groove 8 of the locking member 6 and has risen together with the iron core 4 due to the repulsive force of the spring 5 moves upward and shifts, causing the elbow portion 18 of the lock member 17 to move rearward. The sliding movement is completely blocked by the sides of the stopper member 6 to maintain the closed door lock state.

Furthermore, a key hole 29 is provided through the rotation knob 24, and a crank 30 is pivotally supported on this key shaft 29'.
A link 31 guided and supported by a stud 31' planted on the door base plate is connected to the crank 30, and one end of a large pivot claw 32 whose center is pivotally supported on the door base plate is connected to the link 31. By rotating the key shaft 29', the hook 10 of the stopping member 6 is hooked at the tip of the turning claw 32 via the crank 30 and the link 31, and the stopping member 6 is connected to the spring 5. The claw portion 14 of the locking member 13 pushed out in the direction of the locking hole 9 by pulling down the stopper member 6 is automatically engaged with the lowered engaging hole 9. At the same time, the lowered state of the restraining member 6 is maintained, and the lock can be released.

Note that instead of this configuration, the key hole 29 is made to face the back side without passing through the rotation knob 24, and the rotation knob 24 is
The keyhole 29 can also be exposed by removing it.

In the figure, numeral 34 indicates a key button operation section for operating the energization of the solenoid 3 installed on the front side of the door 2, and the energization is performed by inputting a keyword such as a memorized recitation number.

(Effects of the Invention) This invention is applicable to various types of safes ranging from large to small, which are electrically locked using alternating current or dry batteries using a solenoid (electromagnet), and which intersects with the forward and backward movements of the iron core due to energization and disconnection of the solenoid. By interposing a restraining member between the locking member and the bolt member, which is arranged to slide in the direction, and integrating it by connecting it to the iron core, the material and structure of the restraining member can be made more robust. Therefore, the iron core of the solenoid has no sliding contact with the member that rubs directly, that is, the bar member, and no external contact force is directly applied in the lateral direction other than the suction direction, so the iron core is relatively soft. There is no risk of damaging the iron core, and the interlocking structure of each member that maintains the suction state of the iron core does not depend on the elastic strain force of the members. Since it has a strong structure in which the rear ends are introduced in a crosswise manner and directly engaged, it is possible to realize a robust locking device that can maintain high precision and safety even during long-term use.

In addition, even when the solenoid is energized for an extremely short period of time, the locking member automatically rotates synchronously in conjunction with the suction and lowering operation of the iron core, ensuring that the restraining member is securely locked and lowered (unlocked). , it is possible to minimize the energization time, and
The power saving effect can be further increased.

Furthermore, by linking the locking member with a rotating pawl linked to the key hole, in the event of a malfunction of the electric actuator or forgetting the PIN number, the locking member can be manually locked using the key to enter the suction lowering state. This provides the advantage that the door can be opened by locking the door and releasing the lock.

[Brief explanation of drawings]

Fig. 1 is a front view of a safe equipped with a locking device capable of carrying out the present invention, Fig. 2 is a back view showing the inside of the same door, Fig. 3 is a plan view with the door cut open, and Fig. 4 is a A front view showing the interlocking state of the main parts of the lock device,
Fig. 5 is a side view of the main part of Fig. 4, Fig. 6 shows the main part of the conventional lock mechanism in the locked state, A is its plan view, B is its front view, and Fig. 7 is the same as Fig. 6. FIG. 8 is a front view showing a state in which unlocking is started, and FIG. 8 is a front view showing a state in which the door can be opened when the unlocking is completed. In the figure, 1 is the safe body, 2 is the door, 3 is the solenoid, 4 is the iron core, 6 is the restraining member, 8 is the open receiving groove, 1
3 is a locking member, 17 is a bar member, 29 is a keyhole, 3
2 indicates a turning claw.

Claims (1)

[Scope of Claims] 1. A device for locking the door of a safe using a solenoid (electromagnetic) mechanism, in which a restraining member is coupled and fixed to the iron core of a solenoid attached to the door, and the restraint is in an attracted state when energized. A locking member that rotates and locks in synchronization with the member to maintain that state is provided, and a bar member that slides in a direction crossing the stopper member is provided to prevent the member from being sucked. A safe door opening/closing lock is provided with an opening groove for introducing and engaging the rear end of the lock member at the intersecting part thereof, and the locking member which is in an engaged state at the rear end when introduced is pushed back and released. Device. 2. In a device that locks the door of a safe using a solenoid (electromagnetic) mechanism, a stopping member is coupled and fixed to the iron core of a solenoid attached to the door, and the stopping member is engaged with the attracting state when energized. A locking member that rotates and locks in synchronization to maintain this state is provided, and a locking member that slides in a direction crossing the locking member is installed to lock the locking member at the intersection of the locking members during suction. An open receiving groove is provided for introducing and engaging the rear end of the member, and the locking member that is engaged at the rear end when being introduced is pushed back in the opposite direction to be released, and is linked to a key hole that is separately provided on the door surface. A locking device for opening and closing a door of a safe, in which the locking member is latched to a suction state by a locking claw.