JP5632825B2 - Enclosure door lock device - Google Patents

Description

  The present invention relates to a locking device for reliably locking and unlocking a door of a housing such as a traffic signal control box at an appropriate closed position.

As a conventional locking device of this type, a fixed case fixed to a door, a latch bar accommodated in the fixed case and biased by a spring so as to protrude from a side opening of the fixed case, and the latch bar are locked. 2. Description of the Related Art A lock shaft and a round shaft bar-shaped metal receiver fixed to a fixed frame body are known. The latch bar has an inclined surface portion and a flat surface portion. When the door is closed and rotated, the inclined surface portion of the latch bar slides against the metal receiving member, so that the latch bar moves backward toward the fixed case against the spring bias. When the leading end of the latch bar passes through the receiver, the latch bar advances again by urging, and the flat surface portion engages with the receiver (see, for example, FIGS. 4 to 6 of Patent Document 1). In such a locking device, the latch and the rotor of the lock are configured to be interlocked. After the door is closed and the flat surface portion of the latch bar is engaged with the receiver, the lock is unlocked with a key. If not operated, the latch cannot be retracted.
Moreover, what was described in patent document 2 is known as a locking device which used the dead bolt and the latch together. In this locking device, the door is temporarily locked to the fixed frame body by closing the door and engaging the latch with the receiving part, and then inserting the key into the lock rotor and operating the dead bolt, The bolt is engaged with the same metal receiving part as the latch. To unlock and open the door, the deadbolt and latch are simultaneously retracted to the unlocked position with the key, and the door is pulled while the key is in the unlocked position. The key has a structure that can only be removed from the lock after the door is closed and locked.

JP-A-11-159223 JP 11-293882 A

Among the above conventional lock devices, in the former case, the latch bar may be in a half-hanging state relative to the receipt before the door reaches the proper closing position, that is, a so-called half-door state. In this state, there is a possibility that it may be misidentified that the door is locked at an appropriate closed position.
The latter causes various inconveniences in handling the key due to the fact that the key cannot be removed at the unlocked position.
Therefore, the invention according to this application provides a locking device having a manual locking mechanism that can operate the lock with a key and lock the door only with a dead bolt only when the door is in an appropriate closed position. It is aimed.

Hereinafter, the present invention will be described with reference to the accompanying drawings, but the present invention is not limited thereto.
The locking device 1 of the invention according to this application for solving the above-described problems includes a receiver 3 fixed to the fixed frame F of the housing B and a main body 2 of the locking device fixed to the door D. . The main body 2 includes a case 4 fixed to the door D, a dead bolt 5 incorporated in the case 4 so as to be reciprocally movable between a locking position protruding from the case 4 and an unlocking position drawn into the case 4; A lock 6 incorporated in the case 4 so as to drive the deadbolt 5 by the operation of the key, and a blocking position where the deadbolt 5 protrudes in the path of movement from the unlocked position to the locked position and prevents the deadbolt 5 from being locked. A stopper 7 incorporated in the case 4 so as to be movable between the retracted position for opening the path and biased to the blocking position, and a first position at which the stopper is disposed at the blocking position and a first position at which the stopper is disposed at the retracting position. And a trigger 8 incorporated in the case so as to be movable between two positions. The dead bolt 5 is disposed so as to move to the locking position and engage the rear portion of the receiver 3 when the door D is in the proper closed position. The trigger 8 is reciprocally movable along one side surface along the moving direction of the dead bolt 5 between a first position protruding from the case 4 and a second position pushed into the case 4, and is attached to the first position. When the door D is closed, the sliding surface 8b is provided that slides on the receiving plate 3 and moves the trigger 8 from the first position to the second position while reaching the proper closing position.

  According to the locking device of the invention according to this application, forgetting to lock in the half-door state does not occur, and reliable manual locking is ensured.

It is a front view of the lock device concerning an embodiment of this invention. It is a top view of the locking device of FIG. (A) is the top view which notched some locking apparatuses of FIG. 1, (B) is BB sectional drawing, (C) is CC sectional drawing. (A) is the top view which notched some locking apparatuses of FIG. 1, (B) is BB sectional drawing, (C) is CC sectional drawing. (A) is the top view which notched some locking apparatuses of FIG. 1, (B) is BB sectional drawing, (C) is CC sectional drawing.

Embodiments of the present invention will be described with reference to the drawings.
The lock device 1 includes a metal receiver 3 fixed to the fixed frame F of the housing B and a main body 2 of the lock device fixed to the door D. The lock device main body 2 includes a case 4 fixed to the back surface D1 side of the door D, and a dead bolt 5, a lock 6, a stopper 7, and a trigger 8 incorporated in the case 4, respectively.
The dead bolt 5 is incorporated in the case 4 so as to be reciprocally movable between a locking position (FIGS. 1 and 5) protruding from the opening 4a of the case 4 and an unlocking position (FIG. 3) drawn into the case 4. When the door D is in the proper closing position, it moves to the locking position and engages the rear part of the receiver 3. The dead bolt 5 has a substantially flat prismatic shape, and has a long hole 5a, a recess 5b, and an engagement recess 5e. The long hole 5 a penetrates in the front-rear direction, extends in the moving axis direction of the dead bolt 5, and receives the guide pin 9 fixed to the case 4. Thereby, the dead bolt 5 is movable within the relative movement range of the long hole 5 a and the guide pin 9. The recess 5b is formed on the front side of the dead bolt 5 so as to receive the cam plate 10, and has passive surfaces 5c and 5d on the outer periphery thereof. The engaging recess 5 e is formed on the back side of the dead bolt 5 and engages with the stopper 7.
The lock 6 is arranged so that the cylinder case 6a protrudes from the opening D3 to the front surface D2 side of the door D (FIG. 2), and the dead bolt 5 is driven via the cam plate 10 by operating a key (not shown). Built in case 4. The cam plate 9 is fixed to the rotor 6 b of the lock 6, and can freely rotate forward and reverse by 90 ° between the locked position and the unlocked position, and the outer cam surface slides on the passive surfaces 5 c and 5 d of the dead bolt 5. Then, the dead bolt 5 is driven.
The stopper 7 is movable between a blocking position where the dead bolt 5 protrudes in the path of movement from the unlocked position to the locked position and prevents its locking operation, and a retracted position which opens the path, and is in the blocking position. It is incorporated in the case 4 so as to be energized. That is, the stopper 7 is pivotally supported on the case 4 by the pivot 11 on one side of the dead bolt 5, and is freely rotatable between the shaft cutoff position shown in FIG. 3 and the retracted position shown in FIG. 12 is biased to the blocking position. The stopper 7 engages with the engaging recess 5e of the dead bolt 5 at the shut-off position to prevent its movement in the locking direction, and disengages from the engagement recess 5e at the retracted position to move it in the locking direction. Allow.
The trigger 8 is disposed along one side surface of the dead bolt 5 so as to be interposed between the trigger 7 and the stopper 7. The trigger 8 has a first position where the tip protrudes from the opening 4 a of the case 4, and a first position pushed into the case. It is incorporated into the case 4 so as to be movable between two positions, and is biased to the first position by the spring 13. The trigger 8 has a notch 8a and a sliding slope 8b. The notch 8a protrudes the stopper 7 toward the dead bolt 5, and when the trigger 8 is in the first position, the engaging portion of one end engages with the stopper 7, and the stopper 7 is disposed at the retracted position. When in the second position, the stopper 7 is placed in the blocking position and the dead bolt 5 is restrained in the unlocked position. The sliding slope 8b formed on the distal end side of the trigger 8 is in sliding contact with the receiver 3 during the closing operation of the door D until it reaches an appropriate closing position, so that the trigger 8 is moved from the first position to the second position. Move to. Therefore, the dead bolt 5 can be moved to the locking position only when the door D is in the proper closing position.
In FIG. 3, the door D is open, the dead bolt 5 of the locking device body 2 is in the unlocked position, the trigger 8 is in the first position protruding from the case 4, and the stopper 7 is in the blocking position. In this state, since the stopper 7 is engaged with the engaging recess 5e of the dead bolt 5, the dead bolt 5 cannot be moved in the locking direction. As the door D rotates in the closing direction, the receiver 3 comes into contact with the sliding slope 8b of the trigger 8 and pushes the trigger 8 into the case 4 while sliding relatively. When the door D reaches the proper closing position shown in FIG. 4, the trigger 8 reaches the second position, and the stopper 7 is arranged at the retracted position, so that the dead bolt 5 can be moved in the locking direction. In this state, when the operation of pressing the door D to the housing B side is stopped, the trigger 8 protrudes by the force of the spring 13, and the receiving member 3 is pressed to open the door D. With the door D held in the proper closed position, the rotor 6b of the lock 6 is rotated in the locking direction (counterclockwise in FIGS. 3 and 4) by operating the key, and the dead bolt 5 is moved to the locking position shown in FIG. And engage with the back side of the receiver 3. This completes locking. When the dead bolt 5 is moved to the unlocking position shown in FIG. 4 by operating the key from this locked state, the door D is automatically opened by the output of the trigger 8.

DESCRIPTION OF SYMBOLS 1 Locking device 2 Locking device main body 3 Receipt 4 Case 4a Opening 5 Dead bolt 5a Long hole 5b Recessed portion 5c Passive surface 5d Passive surface 5e Engaging recess 6 Lock 6a Cylinder case 6b Rotor 7 Stopper 8 Trigger 8a Notch 8b Sliding slope 9 Guide pin 10 Cam plate 11 Pivot 12 Spring 13 Spring B Housing D Door D1 Rear D2 Front D3 Opening F Frame

Claims (2)

A locking device for locking and unlocking a door hinged to a fixed frame surrounding the opening on the front side of the housing to the fixed frame, and a lock received on the fixed frame and fixed to the door The main body of the locking device
The main body includes a case fixed to the door, a dead bolt incorporated in the case so as to be reciprocally movable between a locking position protruding from the case and an unlocking position drawn into the case. A lock incorporated in the case so as to drive a dead bolt, a shut-off position where the dead bolt protrudes into a path where the dead bolt moves from the unlocked position to the locked position, and prevents a dead bolt from being locked, and a retracted position where the path is opened It is possible to move between a stopper incorporated in the case so as to be movable between the first position and the second position where the stopper is disposed at the retracted position. And a trigger incorporated in the case,
The deadbolt is arranged to move to the locking position and engage the rear part of the money receiver when the door is in the proper closed position,
The trigger is reciprocally movable along one side surface along the moving direction of the dead bolt between the first position protruding from the case and the second position pushed into the case, and is attached to the first position. And a sliding surface that moves the trigger from the first position to the second position in sliding contact with the receiver while reaching the proper closing position during the closing operation of the door,
The dead bolt has, on one side surface, an engagement concave portion with which the stopper engages at a blocking position,
The trigger further includes an engaging portion that is disposed between the dead bolt and the stopper, and engages with the stopper so that the stopper is disposed at the retracted position at the second position;
The stopper is pivotally supported by the case so as to be rotatable between a shut-off position and a retracted position at one side of the dead bolt, and engages with the engaging recess of the dead bolt at the shut-off position. It is provided so as to separate from the joint recess,
Thereby, only when the door is in the proper closing position, the locking operation of the lock is enabled. The trigger includes a notch portion that extends the stopper toward the engagement recess of the dead bolt at the shut-off position, and one end side of the notch portion stops the stopper at the retracted position at the second position. The locking device for a door of a housing according to claim 1, wherein an engaging portion that engages with the housing is configured.

Images