JPS61225478A - Clock lock - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a clock lock that is attached to a safe or an emergency door and that enables unlocking at a preset time.

[Conventional technology]

Conventionally, time locks that have a built-in clock mechanism and allow unlocking only at a desired time have been installed on vaults and emergency exit doors. However, conventional clock mechanisms are mainly spring- and spring-based movements, and the lever connected to the lock is opened with a large force due to the return of the spring and spring, and the lock is rotated to the unlocked position. I was disappointed in the mechanical activation method.

[Problem that the invention seeks to solve]

With conventional mechanical movements, the unlocking time had to be roughly set, and there was a need to allow some time, and the activation was also unsafe and often delayed significantly. Furthermore, multiple movements must be wound according to their respective scales, but even if one of these multiple movements breaks down, it can be relocked, so there are problems such as the failure being difficult to detect. Ta. In addition, when relocking these, the person in charge must go to the location where the lock is installed and manually lock it directly, and moreover, it is necessary to lock multiple movements one by one.
There was the inconvenience of having to lock the door.

The present invention solves these problems, allows the unlocking time to be set precisely and accurately, allows the locking operation to be performed easily from a distance, and prevents the lock from being locked if a problem occurs in a part of the mechanism. The purpose of the present invention is to provide a clock lock with which faults can be easily detected.

[Means for solving the problem and its operation] The means for solving the above problem in the present invention is an electronic timer lock watch lock in which the operation part and the locking part are separated,
Setting and commands for unlocking are performed by a signal operation from the CPU, which is an electronic timer circuit in the operating section, to a solenoid in the locking section, and the locking operation is performed by wire means connecting the operating section and the locking section.

Locking and unlocking of the time lock bolt depends on the locking means that cuts off or opens the insertion path, but a running plate is arranged as a relay or running member in the movement transmission path from the solenoid and wire means, and it is possible to lock and unlock the solenoid and plunger. As a safety measure, the latch locks the running plate if any one of the locks is not working, and
This running board is assumed to return to its original position after being completely locked, and a micro-sinch or the like is provided at a desired position of the plunger or running board to make it possible to grasp the situation.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a front sectional view showing an example of a locking portion of a watch lock embodying the present invention. In Fig. 1, the base body 1 of the locking part of the watch lock is formed of a hollow box body, and is attached to a door etc., and the time lock bar 2 is inserted through the insertion hole provided on the side of the box body.
is inserted and removed. Normally, the door itself is equipped with a bolt as well as a separate locking device, and security considerations are usually considered important. There is no problem.

A desired number of three solenoids 3 are arranged in parallel on the inner surface of the outer wall of the base body 1 via solenoid seats 3a. In this embodiment, the solenoid 3 is a latch type solenoid that constantly holds the plunger 3b and opens when energized. Each solenoid 3 is attached so that the sliding direction of the plunger 3b fitted in the cylinder is parallel to the wall surface of the base 1, and the protruding end of the plunger 3b is connected to the solenoid.
It is connected to the end of the lever 4. The solenoid lever 4 is an L-shaped plate-like lever, and the base of the L arm is rotatably supported on the solenoid seat 3a, and a torsion coil spring 4a is wound around the shaft to move the plunger 3b away from the solenoid 3. When the solenoid 3 releases the plunger 3b by being biased in the direction of rotation for pulling out, the solenoid 3 rotates clockwise in the figure.

The solenoid lever 4 has a lever pin 4b erected on the plate surface of the lever 4 for intervening with a drive plate pin 5a attached to a drive plate 5, which will be described later.
When rotated, it comes into pressure contact with the drive plate pin 5a and moves the drive plate 5 to the right in the figure. The drive plate 5 is a rectangular plate parallel to the wall surface of the base body 1 and elongated in the horizontal direction. There is. Three drive plate pins 5a are arranged on the plate surface of the drive plate 5 in correspondence with the number and position of the solenoid levers 4, and when any one of the solenoid levers 4 rotates, that lever - The drive plate pin 5a corresponding to the pin 4b is pressed, and the drive plate 5 swings to the right in the figure, and the rotating levers 6a and 6b whose upper ends are connected to the drive plate 5 also move clockwise in the figure. It can be rotated around.

Of these rotary levers, the first rotary lever 6a is pivotally attached to a main shaft 7 that is inserted into the locking side, and mutually transmits locking and unlocking operations, and this operation will be described later.

A latch 8 is attached to the rotation shaft of the second rotation lever 6b, and when the rotation lever 6b is in the unlocked position, the latch claw is raised, and when it is in the locked position, the latch 8 is attached. Tilt the latch claw. A rectangular running plate 9 equipped with teeth to be engaged with the latch pawl is slidably disposed parallel to the drive plate 5, and engages with the latch 8 only in a predetermined portion of its sliding range. mesh together. On this running plate 9, a running plate pin 9a that comes into contact with one end of an arm separate from the plunger side of the solenoid lever 4 is provided upright at a position corresponding to each solenoid lever 4. When the solenoid lever 4 is slid to the right in the figure, the solenoid lever 4 is rotated counterclockwise in the figure, and the plunger 3b is pushed into the solenoid 3. On the other hand, a notch 9b for maintenance is formed in the upper edge of the running plate 9, and a latch 10 of a complementary shape is attached to the pivot shaft of the solenoid lever 4, so that the solenoid lever 4 is connected to the plunger. If the angle is not at which 3b is completely pulled out, the notch 9b
The wall is blocked by the latch 10, so that the running plate 9 cannot slide to the right in the figure. This latch 10 and each solenoid lever 4 are provided, so if all the solenoid levers 4 have not finished turning to the unlocking side,
The running plate 9 cannot slide. Note that the running plate 9 is constantly biased to the left in the figure by a tension spring 9C.

In order to resist the bias and slide the running plate 9 to the locked position on the right side in the figure, a fan-shaped plate 12 around which a wire 11 from the operating section is wrapped is arranged below the running plate 9. has been done.

FIG. 2 is an explanatory diagram partially showing a plane cross section taken along line AA' in FIG. 1. In FIG. 2, the sector plate 1
2 is a wire 11 from the operating section on the outer periphery of a quarter circle.
By pulling the wire 11 to the right in the figure, the wire 11 rotates counterclockwise about the center of the quarter circle as the rotation axis. The fan-shaped plate 12 has a two-stage structure, and a gear is engraved on the integrated small fan-shaped part 12a, and the running plate 9
The running board 9 can be moved to the right in the figure by engaging with the rack 9d attached to the rack 9d.

In the same FIG. 2, the driving plate 5 is disposed outside the running plate 9, and the first rotating lever 6a connected to the driving plate 5 is moved toward the locking side inside the locking part. It is pivotally attached to the main shaft 7 inserted therethrough. A locking/unlocking lever 13 is also pivotally attached to the locking side end of the main shaft 7, and coaxially interlocks with the first rotating lever 6a.
5, the lock 14 is locked and unlocked. Lock/unlock lever 1
3 is biased toward the locking side by a coil spring 13a wound around the main shaft 7, and this is in a direction opposite to the torsion coil spring 4a that biases the drive plate 5 toward the unlocking side.
Since the bias of the torsion coil spring 4a is stronger, the unlocking operation is started only by releasing one of the solenoids 3.

FIG. 3 is a front sectional view taken along line BB' in FIG. 2, showing an example of a locking mechanism. In FIG. 3, a locking member 14 is pivotally supported on the inner wall of the base body 1, and a locking member 14 is pivotally supported on the inner wall of the base body 1.
The insertion path is rotated between a locked position that blocks the insertion path and an unlocked position that releases the insertion path. The locking member 14 includes a pivotally supported fulcrum portion 14a, and rectangular bar-shaped blocking portions 14b extending from the fulcrum portion 14a to both sides along the longitudinal direction of the base body 1.
' are integrally formed with the two blocking parts 14b.

14b' are arranged staggered in a stepped manner at the fulcrum portion, parallel to each other and at a predetermined interval, and the interval forms the insertion path of the gap 2. Two blocking parts 14b.

14b' is unbalanced in terms of weight, and a self-weight moment is applied in the clockwise unlocking direction in the figure, but the locking/unlocking lever 13 biased by the coil spring 13a moves the link arm 15 and loose fitting pin 15a. The blocking portion 14b' on the closed path side is pulled downward and locked in the locked position through the coil spring 13a.
The main shaft 7 is rotated against the bias of , the link arm 15 is pushed up, and the bolt path is opened only while the loose fitting pin 15a is released.

FIG. 4(A) is a front view showing an example of the operation part of a watch lock embodying the present invention, and FIG.
A planar sectional view along c', the same figure (c) is D in figure (a)
-D' is a plane sectional view taken along line D'.

In each of these figures, the operating section has a door-shaped cover 16 attached to the front with a hinge 17, and when this cover 16 is opened, an operating lever 18, two indicator lights 19a and 19b, and 3 The set of CPU 20 and numeric keypad 21 are exposed. The operating lever 18 is connected to the wire 1 from the locking section.
1 is connected to the fan-shaped plate 22, and the fan-shaped plate 22 can be rotated. When the operating lever 18 is pulled toward the user, the wire 11 is pulled, and the operating lever 18 is returned to its original position. When pushed in, the wire 11 is pushed out toward the locking section. The CPU 20 is disposed below the operating lever 18, and is wired in independent circuits corresponding to each solenoid of the locking section. Each CPU 20 can input an unlocking time using the numeric keypad 21, and the set unlocking time can be confirmed through the window 16a of the cover 16. Note that the power supply section 23 is located on the rear side of the operation section.

First, the unlocking operation of the above device will be explained.

When the set unlocking time and the current time match, the three CPUs 20 each issue an unlocking signal pulse and activate each solenoid 3. Solenoid 3 releases plunger 3b which was self-holding. The solenoid lever 4 connected to the plunger 3b is connected to a torsion coil spring 4a.
The lever pin 4b rotates in the unlocking direction, and the lever pin 4b presses the drive plate pin 5a. Since the biasing force of the torsion coil spring 4a is stronger than the biasing force of the locking side coil spring 13a, the drive plate 5 moves to the unlocking side, and the first rotating lever 6a also rotates. A locking/unlocking lever 13 coaxial with the lever and located on the locking side also rotates in the same direction, and the link arm 15 releases the locking of the loose fitting bottle 15a and releases the locking stop 14. The released lock 14 rotates due to its own weight moment, and the time lock bolt 2 can be inserted.

Next, the locking operation of the above device will be explained.

Assuming that the electronic timer circuit is set with unlocking times for several days, the person in charge confirms the next unlocking time, then opens the front cover 16 of the operating section and presses the operating lever 18.
wake up The wire 11 is wound and the sector plate 12 of the locking part
, and attempts to move the running plate 9 to the locking side, which is the right side in FIG. 2, via the gear 12a and the rack 9d.

At this time, if even one set of solenoids remains locked, the notch 9b of the running plate 9 will be locked to the latch 10 and will not be able to slide, and of course the operating lever 18 of the operating section will not be raised. Malfunctions can be detected. When all the solenoids are unlocked, the running plate 9 begins to move toward the locking side, and at the point where the running plate 9 has traveled about half of the sliding range, the latch 8 engages with the latch pawl, and then the operating lever 18 is moved. Running board 9 even if pushed back
does not run backwards. The running plate 9 has completed the entire distance of the sliding range,
When all the plungers are completely inserted into the solenoids, the latch pawl tilts in conjunction with the second rotating lever 6a, the latch 8 is released, and the running plate 9 is pulled back to its original position by the tension spring 9c.

The indicator lights 19a and 19b of the operating section are wired as follows using microswitches and the like.

b) When the running board 9 leaves its original position, the first indicator light 19a
displays “0PEN”.

(Example) When all the solenoids are locked, the first indicator light 19a goes out and the second indicator light 19b becomes "CLO3E".
'″ is displayed.

c) After confirming "CLO3E", release the operating lever and the running board 9 will return to its original position, so the second indicator light 19b
also disappears.

2) When the operating lever is slightly raised, the "CLO3E" display lights up, confirming that the door is locked.

These circuits are energized only when the operating lever is moved, so when all the solenoids 3 latch the plungers 3b and become locked, the drive plate 5 is released from the lever pin 4b and the main shaft 7 The levers at both ends of the lever are biased by coil springs 13a on the locking side, and the locking stop 14 is pulled toward the locking side. However, while the bolt 2 is inserted, the lock 14 cannot be rotated, and the lock 14 does not rotate until the door is closed and the bolt 2 is pulled out, and the time lock is locked.

Since the above embodiment is unlocked using an electronic timer circuit by the CPU, it naturally has the following effects as an electronic clock lock.

b) The unlocking time can be set in minutes, allowing the lock to be unlocked at a more accurate time than before.

Since the unlocking time can be set in absolute time rather than relative time, mistakes are less likely to occur.

c) Multiple unlocking times within a certain period can be set as a possibility, and repeated calls are also possible.

2) The unlock time setting can be changed.

e) Due to the self-diagnosis function of the CPU itself, the power supply voltage drops,
You can discover circuit breaks, etc.

f) Since the operating parts such as the CPU can be separated, remote control is easy even if the locking part is placed on a door in a high place or in a narrow place.
The operating unit can electrically detect whether the door is locked or unlocked, and whether any abnormalities have occurred.

Furthermore, the operating part and the locking part of the electronic time lock are separated to enable remote locking, and moreover, it is possible to lock multiple sets of locking mechanisms by operating a single lever, and the locking part is kept in the locked state. It also has a fail-safe function that allows the operation unit to determine whether the lock is unlocked or unlocked, and if a failure occurs in the unlocking operation, the next relocking is impossible. Note that the above-mentioned discrimination circuit is of a power saving type.

〔Effect of the invention〕

As explained above, according to the present invention, the unlocking time can be precisely and accurately set, the locking operation can be easily performed remotely, and furthermore, if a failure occurs in a part of the mechanism, it is possible to relock the lock. It is possible to provide a clock lock that is impossible to detect and whose failure is easy to detect.

[Brief explanation of the drawing]

Fig. 1 is a front sectional view of a locking part in one embodiment of the present invention, and Fig.
3 and 3 are partial sectional views of the locking section, and FIGS. 4(a) to 4(c) are a front view and a partial sectional view of the operating section of one embodiment of the present invention. 1... Base 2... Bar 3... Solenoid 3b... Plunger 4...
・Solenoid lever 5... Drive plate 9... Running plate 9a... Notch 10... Latch
11... Wire 14... Locking member 20...
・CPU Figure 2 Figure 3 Figure 1

Claims (1)

[Scope of Claims] 1) A watch lock in which the operating section and the locking section are separated, and the unlocking setting and command are performed by an unlocking signal from an electronic timer circuit of the operating section to the locking section, A watch lock characterized in that the locking operation is performed by wire means connecting the operating section and the locking section. 2) The locking section is provided with a detection means for detecting whether the locking section is in a locked or unlocked state and displaying the detected state on the operating section. The watch lock described in item 1.