JP2002242496A - Anti-picking seal for cylinder lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To interfere with illegal locking through a key slot 8. SOLUTION: An anti-picking seal 1 having at an anti-picking port 3 chemical fibers on a brush for preventing access by picking is affixed on the key slot 8 exposed to the outside, to thereby interfere with a key used with picking techniques.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to security management for crime prevention. More particularly, the present invention relates to a seal which is attached to a keyhole or a lock and contributes to security of crime prevention which prevents unlocking by means other than the key.

[0002]

2. Description of the Related Art In general, a cylinder lock has a fixed frame including a circular guide, a rotatable rotating body coupled to the frame and guided by the guide, and a lock according to the presence or absence of a key. A tumbler mechanism that can be brought into a lockable state or an unlockable state. There are a plurality of types of tumbler mechanisms, such as a pin type and a disk type, and any of them can obtain an effective picking technique.

Further, in the cylinder lock, a portion for operating the tumbler mechanism is located at a position accessible from a key insertion slot for inserting a key, so that a picking tool is used from outside through the key insertion port without using a key. It is possible to unlock in a short time.

[0004]

[0005] Cylinder locks equipped with a technology to more reliably prevent unauthorized unlocking have become more expensive due to technology improvements, and picking to accommodate new cylinder locks has also been improved with the technology. , Enabling its unlocking.

[0005] Another problem is that the production and installation of cylinder locks that require more complicated technology take time and cannot meet demand.

[0006]

SUMMARY OF THE INVENTION Accordingly, the present invention provides unlocking of a key by a picking technique by providing a seal having an obstruction for preventing access by picking over a key insertion opening exposed to the outside. By interfering and extending the time to unlock, in order for the person who wants to unlock to detect that the unauthorized unlocking due to picking is detected by a third party, it is determined that it will take enough time to give up unlocking, Create a seal that can be mass-produced at a lower cost than cylinder lock development,
Stabilize picking.

[0007] Further, by providing chemical fibers on the brush from both sides at the obstruction opening of the seal obstructing access, obstruction of fixing of the picking rod and obstruction of grasping of the internal structure of the cylinder are aimed at.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A rotary part having a keyhole is provided with an obstruction for preventing entry into a key insertion hole, and a circular seal along the rotary part is attached.

[0009] The obstructing opening covers the entire key insertion opening.

[0010]

As described above, the picking obstruction seal in the cylinder lock according to the present invention is remarkably economical in the cost effect and the construction time reduction effect with respect to the conventional technology, and the picking technology for the cylinder lock has advanced. Even picking disturbances are possible.

[Brief description of the drawings]

FIG. 1 is an example seen from the front side of a picking obstruction seal in a cylinder lock of the present invention.

FIG. 2 is an example of a state in which the fixed seal on the back side is removed when viewed from the back side of the picking obstruction seal in the cylinder lock of the present invention.

FIG. 3 is an example of the cylinder lock according to the present invention in a state viewed from the back side of a picking obstruction seal and attached with a fixed seal on the back side.

FIG. 4 is an example of a normal cylinder lock viewed from the front of a knob.

FIG. 5 is an example of the case where the picking obstruction seal of the present invention is used by attaching it to the cylinder lock of FIG. 4;

[Explanation of symbols]

 1 Picking obstruction seal 2 Seal removal prevention seal portion 3 Obstruction opening to key insertion opening 4 Picking obstruction brush 5 Picking obstruction brush attaching portion 6 Back cover seal 7 Lock portion 8 Key insertion opening

Claims (1)

[Claims] A person without a key inserts a device into a keyhole to unlock a locked lock, and installs a seal on the keyhole to prevent unlocking. A picking obstruction seal with an entrance obstruction at the part that joins the hole.