JP3054382B2 - Door lock device with trigger mechanism - Google Patents

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 of a drop-in lock type equipped with a trigger mechanism for detecting closure of a door.

[0002]

2. Description of the Related Art In a conventional drop-in lock device, a lock rod is manually moved upward or downward after a door is closed, and a lock piece at a tip end portion of the lock rod is fitted into a receiving portion on a fixed frame side. I have. However, in the conventional device that adopts such an operation procedure, there is a difficulty in the complexity of the operation, and the door installed on a place exposed to strong winds such as a building rooftop, a bridge, an elevated road, and the like, requires a lock rod to be dropped. It is necessary to temporarily hold the door in the closed position so that it will not be pushed by the wind.

[0003]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a door lock device with a trigger mechanism that automatically establishes a lock instantly in conjunction with the closing of a door.

[0004]

A lock device for a door with a trigger mechanism according to the present invention will be described with reference to the accompanying drawings.
The trigger lever 2 is rotationally biased by a trigger spring 5 so that the cam plate 2a at the distal end stands up and protrudes from the fixed case 1, and the intermediate portion of the trigger lever 2 is pivotally connected to the base plate by the transverse pivot 4. 1 guide cylinder 1b
The lock piece 6 at the distal end of the lock rod 6 is fitted into the lock rod 6, and the lock rod 6 is moved and urged by a lock spring 10 so that the lock piece 3 protrudes from the guide cylinder 1b. At a certain time, a lock receiving groove 2b for engaging and disengaging the lock projection 7 on the lock piece 3 side is provided at the base end of the trigger lever 2, and the lock projection 7 is formed in a circular cross section.
The lock receiving groove 2b is formed in a semicircular shape, and the trigger spring 5 is formed.
When the lock projection 7 and the lock receiving groove 2b are held in an engaged state by the rotation bias of the lock lever 7 and the cam plate portion 2a of the trigger lever 2 is tilted and rotated by closing the door 11, the lock projection 7 and the lock are received. The dimensions are set so that the engagement of the receiving groove 2b is released.

The base plate 1 is fixed to, for example, the upper part or lower part or both of the door 11, and is arranged such that the cam plate 2 a of the trigger lever 2 protrudes from the upper and lower end surfaces of the door 11. When the door 11 is closed toward the fixed frame 12, the cam plate 2 a is closed at the final stage of the closing operation.
To the frame edge 15a of the opening 15. When the door 11 is further closed and the cam plate 2a is pushed by the frame edge 15a, the trigger lever 2 rotates clockwise in FIG. 4 against the bias of the trigger spring 5. FIG.
When the trigger lever 2 is tilted and rotated as shown in FIG. 4, the base end of the trigger lever 2 is flipped up and away from the base plate 1, and the lock receiving groove 2 b of the trigger lever 2 and the lock projection of the lock piece 3 are locked. 7 is released.

For this reason, the lock piece 3 and the lock bar 6 released from the constraint on the base plate 1 move in the protruding direction by the urging of the lock spring 10, and when the door 11 comes to the fully closed position, the lock piece 3 is locked. The tip is a fixed frame 1
The door 11 with respect to the fixed frame 12 is engaged with the receiving hole 13 on the second side.
Lock is automatically established. To unlock the door 11 from the fixed frame 12, the lock piece 3
Then, the lock bar 6 is pulled back to the position where the door 11 escapes, and the door 11 is opened. When the door 11 is opened, the cam plate portion 2a of the trigger lever 2 is no longer pressed by the frame edge 15a of the fixed frame 12, so that the trigger lever 2 is rotated to the standing standby position by the bias of the trigger spring 5. Return.

In the standby position, the base end of the trigger lever 2 also returns to the vertical state, so that the lock receiving groove 2b is re-engaged with the lock projection 7 of the lock piece 3. As a result, the movement of the lock piece 3 in the protruding direction is stopped, and the lock piece 3 is held at the standby position immersed in the guide cylinder 1b.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the illustrated embodiment, a base plate 1 is constituted by a pair of left and right L-shaped plates, and a guide tube portion 1b is sandwiched between the two and fixed by welding. A pair of left and right bearing plate portions 1 are provided on the front side of the middle portion of the L-shaped plate.
a, 1a are protruded, and a pair of left and right bearing plate portions 2c is protruded on the rear side of the intermediate portion of the trigger lever 2. A retaining ring 8 is fitted and fixed in outer peripheral grooves 19 at the left and right ends of the transverse shaft 4 inserted through the bearing plate portions 1a and 2c.

The base plate 1 is fixed to the door 11 by fixing tools such as screws passing through the four through holes 20. The guide tube portion 1ba is formed in a rectangular tube shape, and the lock piece 3 is formed in a rectangular cross section so as not to rotate in the guide tube portion 1ba.
A fitting 16 for fitting the lock rod 6 is provided at the base end. The stop projection 7 is formed in the shape of a pin having a circular cross section, and is also used as a connection tool between the lock piece 3 and the lock rod 6 by being driven into the transverse hole 17 of the lock rod 6. It is fixed to the guide cylinder. An escape groove 18 is provided in the front wall of the guide cylinder 1b in the length direction. As shown in FIG. 6, the locking projection 7 of the lock piece 3 is
By contacting the lock piece 3a, the protrusion amount of the lock piece 3 is limited.

The trigger spring 5 is formed of a torsion coil spring. The coil portion 5a is fitted on the transverse shaft 4, one straight end 5b abuts on the rear side of the cam plate 2a of the trigger lever 2, and the other straight line. The end 5c is in contact with the front side of the base plate 1. The lock spring 10 is constituted by a compression coil spring. The lock bar 6 is inserted into a guide hole 22 of a guide plate 21 fixed to the back of the door 11, and the locking spring 10 is fitted to the lock bar 6, and a spring receiving ring 24 fixed to the lock bar 6 and the guide plate 21. Has been compressed between. Note that the locking spring 10 may be provided to be housed inside the guide tube portion 1b. In addition, this lock device main body is not limited to being installed on the door 11 side, but may be installed on the fixed frame side depending on the use and application location.

[0012]

In the lock device of the present invention configured as described above, when the door 11 is closed, the frame edge 1 of the fixed frame 12 is closed.
4a, the cam plate 2a at the distal end of the trigger lever 2 of the trigger mechanism is tilted and rotated, and the semicircular lock receiving groove 2b and the lock piece 3 at the base end of the trigger lever 2 are rotated.
Since the engagement with the stop projection 7 having a circular cross section on the side is released, the lock piece 3 immediately protrudes and moves by the urging of the lock spring 10 and engages with the receiving hole 13 on the fixed frame body 12 side. As described above, since the lock of the door 11 to the fixed frame 12 is automatically established only by the closing operation of the door 11,
Excellent operation simplicity. Further, since the lock is instantaneously established by closing the door 11, it is not necessary to temporarily hold the door 11 at the closed position.

[Brief description of the drawings]

FIG. 1 is a front view of a lock device for a door with a trigger mechanism according to an embodiment of the present invention.

FIG. 2 is a bottom view of the door lock device.

FIG. 3 is a right side view of the door lock device.

FIG. 4 is a right side view when the door lock device is installed on a door.

FIG. 5 is a cross-sectional view taken along line AA of FIG. 1 at the time of unlocking.

FIG. 6 is a sectional view taken along the line AA of FIG. 1 at the time of locking.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base plate 2 Trigger lever 3 Lock piece 4 Transverse axis 5 Trigger spring 6 Lock bar 7 Stop projection 8 Retaining ring 9 Washer 10 Lock spring 11 Door 12 Fixed frame 13 Reception hole on fixed frame side

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E05B 63/20 E05C 1/10

Claims (1)

(57) [Claims] An intermediate portion of a trigger lever is pivotally connected to a bearing plate portion of a base plate by a transverse pivot shaft, and a trigger spring is provided so that a cam plate portion at a distal end rises and protrudes from a fixed case. 5, the trigger lever 2 is rotationally urged, and the lock piece 3 at the tip end of the lock bar 6 is fitted into the guide cylinder 1b of the base plate 1 so that the lock piece 3 projects from the guide cylinder 1b. The cam plate 2a is urged to move by the locking spring 10,
Is in the upright position, the locking projection 7 on the lock piece 3 side
The lock receiving groove 2b is provided at the base end of the trigger lever 2, and the locking projection 7 is formed in a circular cross section.
The receiving groove 2b is formed in a semicircular shape, the engagement between the locking projection 7 and the locking receiving groove 2b is maintained by the rotational bias of the trigger spring 5, and the closing of the door 11 causes the cam plate portion of the trigger lever 2 to close. A locking device for a door with a trigger mechanism wherein when the 2a is tilted and rotated, the engagement between the locking projection 7 and the locking receiving groove 2b is released.