JP3193957B2 - Security lock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock with excellent security.

[0002]

2. Description of the Related Art Conventionally, various locks having excellent security have been developed. However, since criminals who release locked locks in an improper manner appear one after another, the present situation has been to repeatedly develop even better locks. For example, picking (Pick) is also used in cylinder locks, which have excellent mechanisms and are currently the most popular cylinder lock
ing) is easily unlocked by using a tool or the like.

[0003] Therefore, a lock has been developed in which a microcomputer is incorporated in the lock body and the key to lock and unlock by means of radio waves or infrared rays, and a lock which locks and unlocks by embedding the corresponding combined magnet in the lock body and the key, respectively. Have been.

[0004]

However, various locks in the prior art have the following disadvantages. That is, in a lock that incorporates a microcomputer and is locked and unlocked by radio waves or infrared rays, etc., not only is the lock itself expensive, but also if the power supplied to the lock body and the key is cut off, the software used by the microcomputer is lost. There are various drawbacks in malfunction due to bugs, shock resistance, robustness, waterproofness, and portability of a key to be carried.

Further, in a lock which is locked and unlocked using a magnet, not only is the lock itself expensive, but also because the key is heavy and large and the key has strong magnetism, the surrounding magnetic There is a disadvantage that it has a strong effect on cards and the like and cannot be easily handled.

[0006] Further, in each lock using the microcomputer or the magnet, the key cannot be easily copied. There were drawbacks that could not be done.

Accordingly, an object of the present invention is to provide an inexpensive lock having excellent security, in which a key is excellent in portability and robustness, and in which a key can be easily copied. And

[0008]

SUMMARY OF THE INVENTION The present invention provides a key for a lock body.
First sensor for detecting that an object has been inserted into the hole
And the movement of the movable part to lock or unlock the lock
A second sensor to know, the first sensor and the second sensor.
Calculating the time difference between the signals received from the
Outputs a signal when the specified time has elapsed
Control mechanism and output from the control mechanism
To lock the movable part upon receiving the signal
Locking mechanism, and the locked state of the movable part is
When a predetermined time has elapsed, the control mechanism is activated by the lock.
Lock mechanism that sends a signal to the lock mechanism and receives the signal
Release the locked state of the movable part.
You.

More specifically, a mechanism is provided which can limit the time from when the key is inserted into the lock body to when the lock is released. By providing this mechanism, it is possible to insert a tool called "Picking" or the like into the keyhole of the lock body and not to give time to release the lock, thereby preventing the lock from being unlocked inexpensively and improperly. It has a lock.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present embodiment, a description will be given using a cylinder lock.

(Embodiment) 1 is a lock body, which is composed of an outer cylinder 2 and a cylinder frame 3 rotatably fitted into the outer cylinder 2. A key hole 4 into which a key (not shown) is inserted is formed inside the cylinder frame 3, and a first sensor 6 for detecting an object in the key hole 4 is provided in a key insertion opening 5 of the key hole 4. . The detection part of the first sensor 6 has a door shape and always closes the key insertion slot 5. Therefore, when a key or an object is inserted into the keyhole 4, the door of the first sensor 6 is opened and the insertion of the key or the object is detected.

A cylinder rotating plate 7 is provided on the cylinder frame 3 at the other end of the key insertion slot 5. A second sensor 8 for detecting rotation of the cylinder frame 3 is provided on the cylinder rotating plate 7.
Is provided. A rod fitting hole 9 is formed in the cylinder rotating plate 7. A lock mechanism 10 is installed near the rod fitting hole 9. The lock mechanism 10 is provided with a rod 11 slidably to the left and right. The rod 11 is configured to be able to prevent rotation of the cylinder frame 3 by fitting the tip of the rod 11 into the rod fitting hole 9.

A plurality of pin fitting holes 12 are provided in the outer cylinder 2. A driver pin 13 is provided in the pin fitting hole 12.
And the tumbler pin 14 and the driver pin 1
3 and a spring 15 for constantly urging the tumbler pin 14 into the keyhole 4 of the cylinder frame 3 are housed. The driver pin 13 and the tumbler pin 14 are the shear line 1
6 are connected so that they can be connected and separated freely.

Reference numeral 17 denotes a control mechanism. The control mechanism 17 is operated by power supply from a connected battery 18. Further, the control mechanism 17 is connected so as to be able to receive signals from the first sensor 6 and the second sensor 8, processes these signals and sends electric power to the lock mechanism 10 for operation. Further, the control mechanism 17 is turned on by the first sensor 6.
The first sensor 6 serves as both a sensor and a switch.

When a key or an object is inserted into the keyhole 4 in a locked state, the lock main body 1 having the above-described structure pushes and opens the first sensor 6 having a door shape, whereby the control mechanism 17 is opened. Is turned on to start the operation, and enters a state of waiting for a signal from the second sensor 8.

If there is no signal from the second sensor 8 even after a standby state for a fixed time (3 seconds in the present embodiment), that is, when the second sensor 8 does not detect the rotation of the cylinder frame 3, if there is no signal other than the key, The control mechanism 17 determines that the object has been inserted. Then, the control mechanism 17 sends electric power to the lock mechanism 10 to slide the rod 11, and fits the end of the rod 11 into the rod fitting hole 9 to fix the cylinder frame 3 so as not to rotate. With this fixation,
The lock of the lock body 1 cannot be released.

After a certain long period of time (30 minutes in the present embodiment) has elapsed in the above state, the control mechanism 17 sends electric power for reversely operating the rod 11 to the lock mechanism 10 so that the tip of the rod 11 is fitted to the rod. Pull out from hole 9. Thereby, the fixing of the cylinder frame 3 is released. Thereafter, the switch of the control mechanism 17 is turned off. When the control mechanism 17 is turned off, the lock body 1 is in a normal locked state.

Although the battery 18 is used in the present embodiment, the present invention is not limited to this, and an AC power supply can be used instead of the battery 18.
Further, the battery 18 and an AC power supply can be used together.

In this embodiment, the control mechanism 17 is used.
In the above, the signal standby time from the second sensor 8 is set to 3 seconds, and the switch OFF of the control mechanism 17 is set to 30 minutes. However, the present invention is not limited to this, and an arbitrary time can be set.

Further, in the present embodiment, the rod fitting hole 9 for fitting the tip of the rod 11 is formed, but the present invention is not limited to this, and the cylinder rotating plate 7 is replaced with the rod fitting hole 9. Alternatively, a groove or the like into which the tip of the rod 11 can be inserted may be formed.

The lock mechanism 10 of the present invention only needs to be able to fix the cylinder frame 3 so that it cannot rotate, and a dead bolt (not shown) interlocked with the rotation of the cylinder frame 3 or the cylinder frame 3 The lock mechanism 10 may be provided in a link mechanism (not shown) connecting the and the dead bolt.

Further, in this embodiment, the control mechanism 1
Although the first sensor 6 which is used as both the ON / OFF switch 7 and the sensor 7 is used, the present invention is not limited to this.
Various sensors can be used as the first sensor 6, such as a sensor using light and a magnet using an OFF switch.

According to the present embodiment, the battery 18 is used as a power supply that does not require complicated wiring. However, the power supply of the battery 18 is used only when the lock of the lock body 1 is unlocked. Among them, the one that requires a large amount of electric power is the lock mechanism 1 when an attempt is made to release the lock illegally
0 is the case where the rod 11 slides, and the battery 18
Can be used for a long time.

According to the present invention, an inexpensive lock having excellent security can be obtained, and a security lock in which a key is excellent in portability and robustness and a key can be easily copied can be obtained. Can be done.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a lock body according to the present embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lock body 2 Outer cylinder 3 Cylinder frame 4 Key hole 5 Key insertion hole 6 First sensor 7 Cylinder rotating plate 8 Second sensor 9 Rod fitting hole 10 Lock mechanism 11 Rod 12 Pin fitting hole 13 Driver pin 14 Tumbler pin 15 Spring 16 Shear line 17 Control mechanism 18 Battery

Continuation of the front page (56) References JP-A-4-106280 (JP, A) JP-A-9-268819 (JP, A) JP-A-5-295933 (JP, A) JP-A-63-32070 (JP) JP-A-48-62599 (JP, A) JP-A-60-212574 (JP, A) JP-A-4-60076 (JP, A) JP-A-58-127874 (JP, A) 54-161499 (JP, A) JP-A 4-2867 (JP, U) JP-A 60-122265 (JP, U) JP-A 61-20656 (JP, U) JP-B 50-16996 (JP, U) B1) (58) Investigated field (Int. Cl. ⁷ , DB name) E05B 17/20 E05B 15/00 E05B 45/08

Claims (1)

(57) [Claims] 1. An object is inserted into a keyhole of a lock body.
And a first sensor for detecting the movement of a movable part for locking or unlocking the lock.
A second sensor, and signals received from the first sensor and the second sensor.
The time difference between the numbers is calculated, and the calculated time
A control mechanism for outputting a signal when the signal is received, and receiving the signal output from the control mechanism.
And a lock mechanism for locking the movable part
When the locked state of the movable section has passed for a predetermined time, the control mechanism sends a signal to the lock mechanism, and the lock mechanism that has received the signal releases the locked state of the movable section. lock.