JP2002309818A - Lock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lock device in which a key hole for unlocking a lock is made unnecessary while a place where the lock is installed cannot be recognized visually from the outside and an alarm device is operated when an intruder intends to grope and find the place of the lock. SOLUTION: The second dead bolt 10 operated by magnetic force and the alarm device 20 operated by magnetic force are installed at arbitrary places besides a lock with a latch bolt 5 operated by a door knob 4 and the dead bolt 7 operated by the lock 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock, and more particularly, to a lock device mounted on a door.

[0002]

2. Description of the Related Art As one method for preventing a burglar from entering a house, it is conceivable to lock a plurality of locks. Has limitations.

[0003]

SUMMARY OF THE INVENTION The present invention eliminates the need for a keyhole for unlocking a lock, makes it impossible for the position where the lock is installed to be visible from the outside, and allows an intruder to locate the lock. It is an object of the present invention to provide a lock device in which an alarm device operates.

[0004]

A first solution is to provide a lock having a latch bolt operated by a door knob and a dead bolt operated by a lock, and a second dead bolt operated by a magnetic force at an arbitrary position. The provision of the keyhole eliminates the need for a keyhole for unlocking from the door surface. A second aspect of the invention is characterized in that, in the first aspect of the invention, an alarm device activated by a magnetic force is provided at an arbitrary position.

[0005]

1 and 2, a door 1 is attached to a frame 2 so as to be opened and closed by a hinge 3. A latch bolt 5 and a lock 6 operated by a door knob 4 are shown.
The dead bolt 7 operated by the above is accommodated in the housing 8.

The present invention relates to a second dead bolt 10 which is operated by a magnetic force at an arbitrary position other than the above-mentioned ordinary lock.
Wherein the second dead bolt 10 is accommodated in a second housing 11 embedded in the door 1 to move the permanent magnet by contacting the permanent magnet from the surface of the door. It is configured to protrude from the door side end. An alarm device 20 is embedded in the door 1 at a position different from that of the second dead bolt 10, and the alarm device 20 is activated by magnetic force to emit an alarm sound.

In an embodiment, the second dead bolt 10
Has moved from the housing by the magnetic force of the permanent magnet. However, as another embodiment, the second dead bolt 10 is moved from the housing by the driving force of a small electric motor incorporated in the second housing 11. When the permanent magnet is brought close, the switch of the motor is turned on and the motor is driven, and when the permanent magnet is moved away, the switch is turned off.

In FIG. 1, when the front side of the door 1 is outdoors, the latch bolt 5, the dead bolt 7, and the second dead bolt 10 are visually recognized from the outside on the latch bolt mounting side, which is the free end of the door 1. A flange edge 1a is formed so as not to be possible.

In the present invention, in addition to the ordinary lock, the second dead bolt 10 which operates by magnetic force and the alarm device 20 which emits an alarm sound by magnetic force are provided, so that the second dead bolt 10 is locked. When an intruder knows that a lock activated by a magnetic force is installed and an alarm device is activated when trying to find the position of the lock by approaching the magnet, the intruder fears It gives a heart and can prevent unauthorized unlocking.

Further, in the embodiment, the second deadbolt 10 and the alarm device 20 are installed one by one, but the installation position is arbitrary as described above, but the number of installation is also arbitrary.

[0011]

According to the present invention, a lock which can be locked and unlocked by a magnetic force and an alarm device which emits an alarm sound by a magnetic force are installed at an arbitrary position on a door. It has the effect of deterring invading crimes.

[Brief description of the drawings]

FIG. 1 is a perspective view of a door implementing a lock device of the present invention.

FIG. 2 is a cross-sectional view of the door at a position where a second dead bolt is embedded.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door 1a Flange edge 2 Frame 3 Hinge 4 Door knob 5 Latch bolt 6 Lock 7 Dead bolt 8 Housing 10 Second dead bolt 11 Second housing 20 Alarm device

Claims (2)

[Claims] A lock having a latch bolt operated by a door knob and a dead bolt operated by a lock, and a second dead bolt (1) operated by a magnetic force at an arbitrary position.
0), wherein a keyhole for unlocking is not required from the door surface. 2. The lock device according to claim 1, wherein an alarm device activated by magnetic force is provided at an arbitrary position.