JPS6393977A - Cylinder lock - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a cylinder lock that is locked and unlocked by signals generated by an electronic circuit.

Conventional technology: Cylinder locks, which are conventionally used for locking and unlocking mechanical locks, transmit a mechanical code formed by the concave and convex portions of the key to multiple pins inside the lock, thereby locking and unlocking the lock. Ta.

In addition, conventional electronic locks are equipped with a magnetic card reader or an optical card reader, and the electronic signal from this is decoded by an electronic circuit.
It locks and unlocks using a solenoid, and conventional mechanical locks do not have the cylinder lock type that has been used for a long time.

(c) Problems to be Solved by the Invention Conventional mechanical cylinder locks have the disadvantage that the lock can be broken by a so-called picking method, in which the lock is unlocked by aligning the pin positions with a wire or the like. One of the problems that the present invention seeks to solve is to provide a lock that makes this picking impossible.

Another problem that we are trying to solve is that with conventional electronic locks, the solenoid used to electrically lock and unlock the lock consumes a lot of power, so battery-powered ones require many batteries and have a short battery life. It took. The aim is to solve this problem and reduce power consumption.

Another problem with conventional electronic locks is that the part that reads the signal from a cart reader, etc., and the part that locks and unlocks the lock by moving the bolt in and out are only electrically connected, and there is no mechanical connection, so it cannot be done manually. Unlike conventional mechanical locks that lock by turning a bolt, you can't feel the lock in your hands, so you feel anxious about locking. The present invention solves these problems.

(d) Means for solving the problem In order to make picking impossible, the present invention replaces the inner cylinder (the part into which the electronic lock is inserted and rotated) of the cylinder lock with the outer cylinder (the part fixed to the lock). The bottle and its coupling hole for fixing when the lock is locked are not provided in the keyhole of the inner cylinder, but are provided in a place completely independent of the keyhole and in a place where a wire cannot be inserted from the outside.

The key operation that requires a large amount of mechanical energy is moving the bolt in and out, but in the present invention, the electronic lock is inserted into the keyhole, electronically unlocked, and then the electronic key is rotated by hand. Move the bolt manually. In the case of locking, the bolts are moved manually as well.

In this way, the problem of high power consumption, which was the biggest drawback of conventional electronic locks, is solved.

You can also get a sense of security when locking and unlocking the lock by feeling it with your hands when manually inserting and removing the bolt.

(f) Operation The electronic lock inserted into the inner cylinder of the cylinder lock is mechanically connected to the electronic circuit inside the cylinder lock through contacts,
Alternatively, they may be coupled photoelectrically or electromagnetically, and the key coat may be electrically exchanged between them. If the key coat and lock code match and they match, the bottle that prohibits rotation of the inner cylinder is electrically removed and the inner cylinder is allowed to rotate. In this state, if you manually apply rotational force to the electronic key, the inner cylinder will rotate and the key will unlock using the same principle as a regular cylinder key. Similarly, when rotating and locking the cylinder, the bottle that prohibits rotation of the inner cylinder is electrically removed when the electronic key code and lock coat match, and the inner cylinder is manually locked. It is done by rotating.

(f) Example FIG. 1 shows an easy-to-understand sectional view for explaining the structure of the cylinder lock of the present invention.

In Figure 1, 1 is the inner cylinder, 2 is the electronic key, 3 is the outer cylinder, 4 is the bottle,
5 is an electromagnetic actuator that moves the bottle, 6 is an electronic circuit that decodes the key code and moves the electromagnetic actuator 5, 7 is a power source, 8 is a protrusion attached to the inner cylinder for moving the bolt of the lock, and 9 is an internal A keyhole provided in the cylinder 1, 10 a spring for connecting the bottle 4 and the electromagnetic actuator, 1
1 is a coupling hole that engages with the bottle 4. FIG. 2 is a front view of the cylinder lock shown in FIG. 1, with the electronic key 2 removed.

FIG. 3 shows the structure of the electron 52. In Figure 3, 12 is the power supply,
13 is a sensor switch that detects when the electronic key 2 is inserted into the keyhole 9; 14 is an electronic circuit; and 15 is a coupler as a means for transmitting a signal to the electronic circuit 6 of the electronic lock.

The present invention will be explained in detail with reference to the figures.

Assume that the pin 4 is now engaged with the coupling hole 11 and is in a locked state. The user inserts the electronic key 2 into the keyhole 9. Then, the sensor switch 13 operates and the electronic circuit 14 switches to 7.
1i current, the electronic circuit 14 is started, and the coupler 15
A key code signal is sent to the electronic circuit 6 of the electronic lock through the electronic lock. Electronic circuit 6 uses this key coat and its own code! 1? and when it matches a predetermined rule, the electromagnetic actuator 5 is energized to move the bin 4, and the inner rR1
The mechanical connection between the inner cylinder 1 and the outer cylinder 3 is removed, so that the inner cylinder 1 is free to rotate.

In this state, the user manually rotates the electronic key 2 to move a bolt (not shown) mechanically connected to the protrusion 8 to unlock the door. Similarly, in the case of locking, when the key coat and the lock coat match, the bottle 4 is removed and the inner cylinder 1 becomes rotatable, and the electronic lock is manually rotated and the bolt is moved to lock the electronic lock. Useless? ■Electronic circuit 14 to avoid power consumption
The power will be automatically cut off when the key code is sent once or several times. The cross-sectional shape of the electronic key 2 is rectangular like the keyhole 9 in FIG. 2, but is not limited to this.
It can take various shapes, such as a triangle or other polygon, or a combination of a cylinder and a polygon. The cross-sectional shape differs depending on whether the coupler 15 uses a photoelectric method or an electromagnetic coupling method using a coil.

The bottle 4 plays an important role in mechanically connecting the inner cylinder l and the outer cylinder 3 to form a lock, and is made of a high-strength material such as hardened steel and is separated from the keyhole 9. It is installed in a place that cannot be operated from the outside with a wire, etc. The coupling hole 11 that engages with the bottle 4 is also provided at a location completely independent of the keyhole 9. This results in a cylinder lock that cannot be picked.

As the electromagnetic actuator 5 for moving the bin 4, an electromagnet such as that used in a solenoid or an electromagnetic relay is used. The electromagnetic actuator 5 is a so-called bistable seven-point unit whose position is reversed by instantaneous energization and held by a permanent magnet, a spring, etc., in order to reduce power consumption.

A spring 1O is used at the joint between the two bistable actuators 5 and the bottle 4. The spring 10 has the following role. Now, when the user inserts the electronic key 2 and tries to unlock it, if the key coat is genuine and the reversing power is sent to the electromagnetic actuator, then if the user inserts the electronic key 2 and tries to unlock it, If a rotational force is applied by hand, the bottle 4 will be caught between the inner cylinder 1 and the outer cylinder W3 and will not be able to move due to the frictional force caused by the rotational force. A spring 10 is installed so that the actuator 5 can be reversed even in such a case.
is used. That is, the spring IO extends and the cutter 5 stops at the position where a force is applied to the bottle 4 in the direction of pulling out the bottle 4, so that even if the power is cut off, a force is always applied to the bottle 4 to pull it out. By doing this, there will be a time when no frictional force is applied between the inner cylinder l and the outer cylinder 13 when the user rattling the electronic key 2 from side to side, and at this time the bottle 4 is connected by the spring force. It is pulled out from the hole 11 and unlocked. In this way, the power consumption of the actuator 5 is reduced.

Although the outer cylinder 3 shown in FIGS. 1 and 2 has a cylindrical shape, the shape of the outer cylinder does not necessarily have to be cylindrical.
It doesn't matter if it's a polygon or an ellipse. The point is that the outer w3 is fixed to the lock body, and its shape does not matter. In FIG. 1, the power source 7 is built into the outer cylinder 3, but the power source may be obtained from outside.

Furthermore, power for the electromagnetic actuator 5 and the electronic circuit 6 may be obtained from the power source of the electronic key 2 when locking/unlocking. The electronic circuit 6 and the electronic circuit 14 are for ordinary LSI-based electronic locks, and various code formats can be used, but no matter what format is used, they are compatible with mechanical cylinder locks. The difference is that it has the feature that it is easy to obtain different keys in a very large number of ways, for example, dozens of different ways. It needs to be changeable. LSIs having such characteristics can be easily obtained.

(G) Effects of the Invention The present invention exhibits various effects as described below. By changing the key of the conventional mechanical cylinder lock to an electronic key and attaching the electronic circuit of the electronic lock corresponding to this electronic key to the lock side,
To provide a cylinder lock that cannot be picked by making it possible to provide a bin for fixing the inner cylinder and outer cylinder of the cylinder lock when the cylinder lock is locked in a place that is separate from the keyhole and cannot be touched from the outside. With conventional mechanical cylinder locks, the key code could generally not be changed without replacing the cylinder, but since this cylinder lock is electronic, the key code can be easily changed when the key is lost. Also, a large number of key differences can be obtained. Unlike conventional optical card type or magnetic card type electronic locks, the lock is locked by manually rotating the key, so when the lock is locked, the user can feel the tactile response that the lock is locked, giving the user a sense of security. Can be done. Moreover, by manually moving the bolt to lock and unlock, the power consumption of the electronic lock can be greatly reduced, and the maintenance cost of M and H as electronic locks can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a simplified sectional view for explaining the present invention, FIG. 2 is a front view of the cylinder lock of FIG. 1, and FIG. 3 is a diagram for explaining an electronic key. l...Cylinder, 2...Electronic key, 3.
...Outer tube, 4...Pin, 5...
...Electromagnetic actuator, 6...Electronic circuit,
8...Protrusion, 9...Keyhole, lO...
... Spring, 11 ... Connection hole. Patent Applicant Shunsaku Nakajiro, Representative of Kokusai Technological Development Co., Ltd. Figure 1 Figure 2 1...Inner cylinder 2...Electronic key 3...Outer cylinder 1...・・・
・Pin 5...ili magnetic actuator 6...
...Electronic circuit 7...-'ttL source
8...Protrusion 9...Keyhole
10... Streak 1 long 11...
binding hole

Claims (2)

[Claims] (1) Consisting of an inner cylinder and an outer cylinder, the inner cylinder has a protrusion for moving the bolt of the lock, a keyhole into which an electronic key is inserted, and a coupling hole that is completely independent of the keyhole, and the outer cylinder has a , an electronic circuit that extracts and verifies the key code of the electronic key as an electrical signal;
An electromagnetic actuator operated by the output of the electronic circuit, and a pin moved by the actuator that engages the coupling hole of the inner cylinder and mechanically couples the inner cylinder and the outer cylinder to a locked state. A cylinder lock featuring: (2) The cylinder lock according to claim 1, further comprising a spring connecting the pin and the electromagnetic actuator.