JP2000310070A - Door locking device arranged at inner corner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door locking device resistant to illegal unlocking with a picking tool and capable of positive protection of equipment to be intended against illegal access. SOLUTION: A mount box 3 is fixed to the inner face of a side wall plate portion 2b of a fixed frame 2 apart from a door 10 and a cylinder lock 5 is fixed to an inner wall portion 3b of the mount box 3. One end of a core wire 7a of an association wire member 7 is connected to a rotating operation plate 6 fixed to a rotor 5a of the cylinder lock 5 so that a latch 8 connected to the other end of the core wire 7a can be engaged/disengaged with/from a receiving bracket 12 fixed to the back of the door 10. Since a locking mechanism portion is located behind the inner corner of the fixed frame 2, a neck length key 13 long enough to reach the cylinder lock 5 is only used for operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door lock device that is useful when it is desired to prevent a person other than a valid administrator from operating a device or obstructing a device.

[0002]

2. Description of the Related Art A door lock device used in a conventional device storage box is directly attached to a door that opens and closes an opening of the storage box, and a main body mechanism of the lock device is very close to the front of the door. Located in the area. For this reason, there is a high risk of unauthorized unlocking by the picking tool, and even if the locking device is attached, it is not always sufficient as a protective measure, and it is not easy to prevent unauthorized access to the device.

[0003]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a device which is resistant to unauthorized unlocking by a picking tool,
An object of the present invention is to provide a door lock device of an inner rear portion which can reliably protect a target device from unauthorized access.

[0004]

The door lock device according to the present invention will be described below with reference to the accompanying drawings. In the door lock device, a door that opens and closes an opening 1 of a front wall plate portion 2a of a fixed frame 2 is provided. 10 is attached to the fixed frame 2 by the hinge 9, and the mount box 3 is fixed to the inner side of the side wall plate 2 b of the fixed frame 2 away from the opening 1, and the mount box 3 is brought into contact with the outer wall 3 a of the mount box 3. The key guide 4 is rotatably mounted on the side wall plate portion 2b of the contacting portion, and the cylinder lock 5 is fixed to the inner wall portion 3b of the mount box 3 remote from the side wall plate portion 2b. The rotation operation plate 6 is fixed to the end of the rotation operation plate 6, and one end of the core wire 7 a of the interlocking wire member 7 is connected to the end of the rotation operation plate 6, and the latch 8 supported by the fixed case 16 fixed to the fixed frame 2. Core wire 7
a, the other end of which is connected to the latch 1 to which the latch 8 is disengaged
2 is fixed to the rear side of the door 10, and the neck-length key 13 is connected to the rotor 5 a of the cylinder lock 5 through the key hole 17 of the key guide 4.
Into the keyhole.

[0005] In the door lock device constructed as described above, the authorized manager inserts the neck key 13 from the key hole 17 of the key guide 4 in the side wall plate portion 2b of the fixed frame 2,
The tip key code portion 13a is connected to the rotor 5a of the cylinder lock 5.
Into the keyhole. After the rotation constraint of the rotor 5a with respect to the cylinder lock body is released by the tip key code portion 13a, the rotation operation plate 6 is turned by a required angle by turning the neck length key 13 in a predetermined direction. Since the core wire 7a of the interlocking wire member 7 is pulled by the rotation of the rotation operation plate 6 with respect to the sleeve 7b fixed and held on the fixed frame 2, the latch 8 is pulled in the retreating direction, and the latch 8
Is detached from the receiving fitting 12. Thereby, the lock of the door 10 to the fixed frame is released, and the door 10 is opened by the authorized administrator.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the illustrated embodiment, a fixed frame 2 is shown.
A reinforcing plate 14 is fixed to the side wall plate portion 2b, and the key guide 4 is also fitted to the reinforcing plate 14. The latch 8 is urged in the projecting direction by a compression coil spring 15. A handle means 11 is mounted on the front side of the door 10 at a position opposite to the hinge 9. Of course, the handle means 11 may have a built-in lock function. For convenience of illustration, the hinge 9 is arranged on the front side, but it is desirable to arrange the hinge 9 on the back side in consideration of security. In this embodiment, the core wire 7a of the interlocking wire member 7 is connected to both ends of the rotary operation plate 6, and the latch 8 is connected to each core wire 7a. Locking is performed at two places, upper and lower, to further enhance security.

[0007]

As described above, in the door lock device of the present invention, the mount box 3 is fixed to the inner side of the side wall plate portion 2b of the fixed frame 2 distant from the door 10, and the inner wall of the mount box 3 The cylinder lock 5 is fixed to the portion 3b, and one end of the core wire 7a of the interlocking wire member 7 is connected to the rotation operation plate 6 fixed to the rotor 5a of the cylinder lock 5, and connected to the other end of the core wire 7a. The latch 8 is engaged with and disengaged from the receiving bracket 12 fixed to the rear side of the door 10. Since the lock mechanism is hidden inside the fixed frame 2, the length of the lock 8 reaches the cylinder lock 5. The operation cannot be performed unless the head key 13 is used. For this reason, unlocking is not possible with conventional picking tools that assume that the keyhole of the cylinder lock is exposed on the front of the door, and the storage devices can be securely protected from unauthorized access by anyone other than the authorized administrator. Can be protected.

[Brief description of the drawings]

FIG. 1 is a front view of a fixed frame and a door using a lock device for an inner-rear-located-type door according to an embodiment of the present invention.

FIG. 2 is a right side view of the fixing frame.

FIG. 3 is a sectional view taken along line AA of FIG. 1;

FIG. 4 is a sectional view taken along line BB of FIG. 2;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 Opening of fixed frame 2 Fixed frame 3 Mount box 4 Key guide 5 Cylinder lock 6 Rotating operation plate 7 Wire member for interlocking 8 Latch 9 Hinge 10 Door 11 Handle means 12 Receptacle 13 Neck length key 14 Reinforcement plate 15 Latch Spring for urging 16 Latch fixed case 17 Key hole

Claims (1)

[Claims] 1. An opening 1 in a front wall plate 2a of a fixed frame 2.
A door 10 for opening and closing the door is attached to the fixed frame 2 by a hinge 9, and the side wall plate portion 2 b of the fixed frame 2 separated from the opening 1.
The mount box 3 is fixed to the inner surface of the mount box 3, and the side wall plate portion 2b of the portion that contacts the outer wall 3a of the mount box 3
The key guide 4 is rotatably mounted on the side wall plate portion 2b.
The cylinder lock 5 is fixed to the inner wall 3b of the mount box 3 away from the cylinder box 5, the rotary operation plate 6 is fixed to the rotor 5a of the cylinder lock 5, and the core wire of the interlocking wire member 7 is attached to the end of the rotary operation plate 6. The other end of the core wire 7a is connected to a latch 8 supported by a fixed case 16 fixed to the fixed frame 2 and the receiving metal 12 to which the latch 8 is disengaged is connected to the door 10. A lock device for an inner-rear-located door, which is fixed to the rear side and inserts the neck-length key 13 into the key hole of the rotor 5a of the cylinder lock 5 from the key hole 17 of the key guide 4.