JPH0332214Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is designed to maintain the locked state of the door of a safe, etc. even if the lock, such as a combination lock or a cylinder lock, is broken from the outside. This invention relates to an improvement in an emergency locking device (relocking device) that automatically locks from the inside in connection with a destructive attack so that the device is maintained.

[Prior art]

This type of emergency lock device usually has an emergency lock lever on the inner surface of the door that is biased by a spring to keep the door in a locked state at all times, and also uses some kind of locking means during normal times. When the emergency lock lever is locked in the non-locking position against the spring force, and the lock for locking the door is attacked by a burner, hammer, etc., the above-mentioned locking lever is When the lock is released, the emergency lock lever is moved to the locked position by the spring force, and the door is maintained in the locked state.

As a locking means that links the breaking of the lock and the operation of the emergency lock lever, for example,
Publication No. 23115 proposes the use of a temperature fuse. That is, a temperature fuse device disposed near the lock main body on the inner surface of the door is connected to the emergency lock rod via a wire, and the emergency lock rod is normally pulled and held in an unlocked position by the wire. When a thief heats the door with a burner to burn out the lock, the heat melts the temperature fuse and loosens the wire, which causes the emergency lock lever to protrude with spring force and shift to the locked position. has been done.

[The problem that the idea aims to solve]

However, although this prior art can deal with a burner attack, it cannot deal with the case where the lock is damaged by being hit with a hammer or the like. There was a problem that it had to be set up separately.

Moreover, the destructive attack by the burner is concentrated on the lock, but because this temperature fuse device can only be installed near the lock due to its structure, it takes a long time from the start of the attack until the temperature fuse starts to melt. There was also the problem that it took a considerable amount of time and the response to heat attacks was not quick enough.

The object of the present invention is to eliminate these drawbacks and provide an inexpensive emergency lock device that can quickly respond to both heat and impact attacks.

[Means to solve the problem]

In order to achieve this purpose, the present invention attaches a lock main body for locking the door to the inner surface of the door of a safe, etc. so that it can be removed from the inner surface of the door by an attack force from the outside of the door. An emergency locking rod is provided on the inner surface of the door, which is biased by a spring so as to keep the door in a locked state. Insert the end of the emergency lock rod between the lock body and the inner surface of the door with the weak heat-resistant string tensioning the emergency lock rod in the unlocking direction against its spring, and The other end of the heat-sensitive string is attached to the lock main body or the inner surface of the door in such a way that the tensile bias in the unlocking direction by the weak heat-sensitive string is released when the lock main body is separated from the inner surface of the door. I configured it to do this.

[Effect of invention]

With this configuration, firstly, the string with one end attached to the emergency lock rod is vulnerable to heat, and the other end of the string is inserted between the lock body and the inner surface of the door. Since the heat of the burner against the lock is immediately transmitted to the other end of the string, the other end of the string immediately melts or burns out, thereby causing the emergency lock rod to become under the spring biasing force. The door is automatically held in the locked position from the inside.

Further, the lock main body is attached to the inner surface of the door so that it can be detached from the inner surface of the door by an attack force from the outside of the door, while the other end of the weak heat-resistant string is attached to the lock main body or the inner surface of the door. When the lock body is detached from the inner surface of the door, the tensile force in the unlocking direction by the weak heat-resistant string is released, so that the lock body can be moved by an external impact on the lock. At the same time as leaving the inside of the door,
Since the tensile bias in the unlocking direction by the weak heat-resistant string is released, even if the lock is struck and broken, the emergency lock lever will immediately operate to the lock position.

〔Example〕

Next, the embodiments of the present invention are shown in the drawings (Figs. 1 to 5).
In the figure, reference numeral 1 indicates a safe body, and reference numeral 2 indicates a door pivotally connected to the safe body 1 via a hinge 3 so as to be freely openable and closable.
A lever 4, a dial portion 5 of a combination lock, and a keyhole 7 of the cylinder lock are provided on the front surface of the door 2.

As shown in FIG. 3, on the inner surface of the door 2, a dial type lock main body 6, a cylinder lock main body 9, and a cross crank 9 integrally connected to the lever 4 via a rotation shaft 10 are attached. A pair of upper and lower vertical bar rods 11, 12, a horizontal bar rod 13, and a main lock rod 14 are pivotally connected to each arm of the cross crank 9, and an L bar is attached to the lower vertical bar 12. An auxiliary bar rod 15, which is slidable left and right, is connected via a mold crank lever 15'. Therefore,
When the lever 4 is rotated, each bar rod 11,1
2, 13, 15 and the main locking rod 14 are interlocked and slide all at once, and each locking rod 11, 12, 13,
5 moves in and out of the outer peripheral surface of the door 2 all at once and engages and disengages from the engaging portion (not shown) of the safe body 1, and each bar is engaged with the body 1. When the main lock rod 14 or any one of the bar rods is set to the sliding function, each bar rod 11, 12, 1
3 and 15 become unable to move backward, and the door 2 is locked so that it cannot be opened or closed.

In this embodiment, this locking means is a double lock consisting of a dial type lock and a cylinder type lock, and the latch part 6' of the dial type lock main body 6 is
A protruding piece 1 is provided that can freely engage and detach from the engaging part 14' of the main locking rod 14, and also connects the latch part 8' of the cylinder type lock body 8 to the lower vertical bar 12.
2' can be freely engaged and detached.

The cylinder type lock main body 8 is attached to the door 2 with screws etc.
However, when a blow is applied to the dial type lock body 6 from the outside of the door 2 against the inner surface of the door 2, the dial type lock body 6 is fixedly attached to the inner surface of the door 2. The dial type lock main body 6 is attached so as to be separated from the inner surface of the door 2.

Reference numeral 16 denotes an emergency lock rod disposed near the auxiliary bar rod 15, and a pair of upper and lower elongated holes 17 bored in this lock rod are connected to a pair of upper and lower guide pins 18 fixed to the inner surface of the door 2. In addition, an engagement piece 16' is integrally provided on the emergency lock rod 16 so that it can be slid up and down, and when the emergency lock rod 16 is in the raised position, the auxiliary lock rod is engaged. 15 is slidable left and right, and when the emergency lock lever 16 is lowered with the auxiliary bar 15 locked to the safe body 1, the engagement piece 16' locks the auxiliary bar 15. The door 2 is connected in such a way that the door 2 is maintained in a locked state in a state that prevents backward movement.

Further, the emergency lock rod 16 is always directed downward by a tension spring 19, that is, the auxiliary lock rod 15
biased into a locked position in which it engages. In this case, the emergency lock rod 16 is connected to the other lock rod 1.
1 and 13, or directly to the safe body 1.

Reference numeral 20 denotes a cord disposed on the inner surface of the door 2 in order to pull the emergency lock lever 16 into the unlocked position. The cord 20 is made of a material that easily melts or burns out, and one end of the cord 20 is fixed to the emergency lock rod 16.

As shown in FIGS. 4 and 5, a locking piece 21 is provided on the bottom surface of the dial type lock main body 6 in the horizontal direction.
On the other hand, a recess 24 into which the locking piece 21 fits is provided below the through hole 25 for inserting the dial lock rod 26 on the inner surface of the door 2. A vertically longitudinal long groove 22 communicating with the recess 24 is cut out in a portion below the recess 24 in the face plate 2'. Then, the other end 20' of the string 20 is inserted through the long groove 22 while the emergency lock rod 16 is pulled upwardly against the spring 19 by the string 20. It is engaged with the locking piece 21, thereby holding the emergency locking rod 16 in the unlocked position against the force of the spring 19.

At this time, a bridge-shaped regulating piece 23 is fixed to the upper end of the long groove 22 so that the other end 20' of the string 20 is located closer to the outer surface of the door than the regulating piece 23. .

In addition, in the embodiment, the other end 20' of the string 20
Although the long groove 22 for passing through is formed on the inner surface of the door 2, it may be carved on the bottom surface of the dial type lock main body 6. Further, the regulating piece 23 may be made to protrude from the inner surface plate 2' of the door 2, but in any case, the other end 20' of the string 20 is connected to the dial type lock main body 6 and the inner surface of the door 2. It is configured so that it is interposed between.

Suppose that the safe constructed in this manner is attacked by a thief, and first the cylinder type lock main body 8 is destroyed, and then the attacker moves to the dial type lock main body 8. First, when an attempt is made to burn out the dial part 5 of the combination lock with a burner, the heat is transferred to the rod 26 because the combination lock is made of metal.
immediately transmitted to the other end 20' of the string 20 via
The locking portion of the other end 20' of the string 20 is fused and cut. At the same time, the tensile force applied to the emergency lock lever 16 disappears, so the emergency lock lever 16
The door 2 is moved to the locked position by the force of the spring 19 and engaged with the auxiliary bar 15 to maintain the locked state of the door 2. Even if it is not melted by heat alone, if the dial part 5 is removed and the flame of the burner enters the insertion hole 25, the other end 2 of the string 20
0' will burn out instantaneously, so the emergency locking rod 16 is moved to the locked position by the force of the spring 19.

In this case, if the string 20 is placed in close contact with the inner surface of the door 2, as shown in the drawings of the embodiment, the portion where the string 20 is placed will be attached to the door 2. The string 20 will be fused no matter which part is heated. Therefore, by arranging the cord 20 over as wide a range as possible on the inner surface of the door 2, it is possible to deal with burner attacks on parts other than the attachment point of the combination lock.

Next, when the dial lock is hit by a hammer or the like, the dial lock main body 6 separates from the inner surface of the door 2, and as a result,
Although the other end 20' of the string 20 attempts to move while being locked to the locking piece 21, the other end 20' of the string 20 is prevented from separating from the inner surface of the door 2 by the regulating piece 23. Therefore, at the same time as the dial type lock body 6 is released, the other end 20' of the string 20 is unlatched to the locking end 21, and the emergency lock rod 16 is moved to its spring 19 in the same manner as described above. The lock will be activated.

6 to 9 show other embodiments of means for securing the other end 20' of the string 20. As shown in FIGS.

Among these, the ones shown in FIGS. 6 and 7 have a locking piece 21' protruding from the door 2 side in the direction of the dial type lock main body 6, and the other end 20' of the string 20 is locked to this, while A guide piece 27 is provided protruding from the rod support cylinder 6'' of the dial type lock main body 6, and the guide piece 27 is positioned closer to the outer surface of the door than the other end 20' of the string 20. In this case, when the combination lock main body 6 is detached due to an attack from the outside of the door, the other end 20 of the string 20 is pulled away from the door by the guide piece 27,
The engagement with the locking piece 20' is released. In this embodiment, in order to position the guide piece 27 closer to the outer surface of the door than the other end 20' of the string 20,
The dial type lock main body 6 may first be fitted onto the inner surface of the door in an inclined state as shown by the dashed line in FIG. 7, and then rotated and set in a predetermined position. .

In addition, the ones in FIGS. 8 and 9 are spacer 3
0 is used for locking. That is, a bridge-like locking portion 32 is formed at the upper end of a long groove 31 for string insertion formed in a notch in the spacer 30, and the head 20'' of the other end 20' of the string 20 is formed in the bridge-like locking portion 32. In this embodiment, the dial type lock main body 6
No processing is required on the inner surface of the door 2 or the door 2. in this case,
If the through hole 33 for inserting the rod support tube 6'' in the spacer 30 and each hole 34 for inserting the set screw 35 in the dial type lock main body 6 are made into elongated holes as in the embodiment, the dial type lock main body 6 can be easily inserted. This is more effective because the spacer 30 itself also falls due to its own weight as it separates.The other end 2 of the string 20
The head 20'' and the spacer 30 may be made of a heat-sensitive material such as synthetic resin.

Note that in these two embodiments, the effect against burner attacks is the same as in the first embodiment described above.

[Effect of idea]

As described above, according to the present invention, the other end of the weakly heat-resistant string that pulls and holds the emergency lock rod in the unlocked state is inserted and locked between the lock body and the inner surface of the door, and the string is If the door is fused or the other end becomes unlatched, the emergency locking lever will operate to keep the door locked, so it is a single device.
It can respond to both heat and impact attacks, and since the other end of the string is inserted between the lock body and the inside surface of the door, destructive attacks on the lock body are immediately transmitted, making it an emergency lock. Since the lever operates quickly, the safe can be reliably protected from thieves. Furthermore, the structure is extremely simple, and this fact, combined with the fact that the single device can withstand both heat and impact attacks, has the effect of making it possible to manufacture it at a very low cost.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view of the safe, FIG. 2 is a cross-sectional view of FIG. 1, and FIG.
The figure is a view of the door from the inside, Figure 4 is an enlarged view of the main part of Figure 3, Figure 5 is a sectional view of Figure 4, and Figure 6 is a cross-sectional view of Figure 4.
7 and 7 are views showing other embodiments, and FIG. 7 is a cross-sectional view taken from the side of FIG. FIG. 2...Door, 2'...Door inner surface plate, 6...Dial type lock body, 16...Emergency lock rod, 20...
... Weakly heatable string, 20'...Other end of weakly heatable string, 2
1, 21'... Locking piece, 23... Regulating piece.

Claims (1)

[Scope of utility model registration request] A lock main body for locking the door of a safe etc. is attached so that it can be removed from the inner surface of the door by attack force from the outside of the door, while a lock main body for locking the door is attached to the inner surface of the door so that the lock body can be detached from the inner surface of the door by attack force from the outside of the door. A spring-biased emergency lock lever is provided, one end of a low heat resistant string is secured to the emergency lock lever, and the other end of the low heat resistant string is connected to the low heat resistant string. The emergency locking rod is inserted between the lock body and the inner surface of the door while being pulled and biased in the unlocking direction against its spring, and the other end of the weakly heatable string is inserted into the lock. An emergency device for a safe, etc., characterized in that the lock is attached to the main body or the inner surface of the door in such a way that the tensile force in the unlocking direction by the weak heat-resistant string is released when the lock main body is separated from the inner surface of the door. Locking device.