JP2862865B1 - Electromagnetic snatch lock device - Google Patents

Abstract

The present invention provides an electromagnetic snatch lock device that can be unlocked with a small suction force, has high operation reliability, and can accurately prevent unauthorized unlocking. A lock cam 3 supported by a cam shaft 5 and urged to rotate clockwise by a cam spring 4; a stop shaft 18 for stopping the rotation of the lock cam 3 at a fixed angle;
A cam stopper which is supported by a stopper shaft 9 and is urged to rotate counterclockwise by a cam stopper spring 10 so that a rear projection 8d is engaged with an engagement groove 3b of the lock cam 3.
8, a slide plate 24 for releasing the cam stopper 8 is fixed to the notch groove 21a, and the plunger 21 of the solenoid 19 urged in the extension direction by the coil spring 22; Plunger-2
Double lock link mechanism 1 for performing only by operation 1
2

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic snatch lock device used for a locker door of various facilities such as a house and a company.

[0002]

2. Description of the Related Art In a conventional electric lock device, the tip of a plunger of a solenoid is directly engaged with a stop shoulder of a lock cam. Sometimes.

[0003]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an electromagnetic snatch that can be unlocked with a small suction force, has high operation reliability, can reduce the size of a solenoid, and can accurately prevent unauthorized unlocking. It is to provide a locking device.

[0004]

The electromagnetic snatch lock device according to the present invention is rotatably supported by a camshaft 5 fixed to a case 2 and includes a cam spring 4. A lock cam 3 urged clockwise to rotate; a stop shaft 18 fixed to the case 2 to stop the rotation of the lock cam 3 at a fixed angle;
A bottom plate 7 attached to the bottom of the case 2; a cam stopper of the bottom plate 7; a stopper fixed to the mounting plate portion 7a;
The cam stopper-spring 10
The cam stopper 8 is urged to rotate in the counterclockwise direction, and the rear projection 8d is engaged with the engagement groove 3b of the lock cam 3.
The slide plate 24 for releasing the cam stopper 8 is fixed to the notch 21a, and the coil spring 2
A plunger-21 biased in the direction of extension by 2;
A solenoid 19 for performing an expansion / contraction operation of the plunger 21;
And a double lock link mechanism 12 for releasing the cam stopper 8 only by the operation of the plunger 21.

Further, the double lock link mechanism 12 includes a trigger-support shaft 14 fixed to a fixing plate 16; a trigger-lever 13 rotatably supported by the trigger-support shaft 14;
An operation pin 15 fixed to the trigger lever 13; and one end hung on the locking plate portion 16b of the fixed plate 16 and the other end hung on the operation pin 15, thereby forming a stop groove 13b at the tip of the arm portion 13a. Are formed by a trigger spring 17 for urging the trigger lever 13 to rotate so as to engage with the stopper engaging portion 8e of the cam stopper 8.

The rear projection 8d of the cam stopper 8 is engaged with the engaging groove 3b of the lock cam 3, and the lock cam 3 is urged clockwise by the cam spring 4 and the cam stopper 8 is rotated counterclockwise by the cam stopper spring 10. By doing so, it is locked in a locked state. Since the rear protruding portion 8d of the cam stopper 8 is sufficiently separated from the stopper shaft 9, even if the cam stopper 8 and the lock cam 3 are engaged with each other, the driving portion 8a of the cam stopper 8 can be operated with a small suction force due to the leverage relationship. , The cam stopper 8 can be released from the engagement groove 3b of the lock cam 3 and unlocked.

However, in such a system, the engagement between the cam stopper 8 and the lock cam 3 can be illegally released by pressing the cam stopper 8 with a wire or the like, so that double locking is required to prevent unauthorized unlocking. The link mechanism 12 is incorporated. FIG. 12 shows a positional relationship between the cam stopper 8, the double lock link mechanism 12 and the slide plate 24 when locking. In this state, the cam stopper-8
The stopper engaging portion 8e is engaged with the restraining groove 13b at the tip of the arm portion 13 of the trigger lever 13, so that even if the cam stopper 8 is pushed by a wire or the like, the cam stopper 8 does not tilt, and the unauthorized unlocking is performed. Can not do it.

However, when the solenoid 19 is energized and the plunger 21 is sucked, the slide plate 24 also moves to the right, and the operating pin 15 of the double lock link mechanism 12 is mounted on the cam slope 24c of the window hole 24b of the slide plate 24. Contact. Then, as shown in FIG. 13, the trigger lever 13 rotates clockwise around the trigger support shaft 14 against the trigger spring 17, and the arm portion 13a is moved to the cam stopper.
8 enters the hollow portion 8b. Therefore, the cam stopper
8 is rotatable about the stopper shaft 9, and when the plunger 21 is further sucked, the frame side portion 24 of the window hole 24b is opened.
d pulls the driving portion 8a of the cam stopper 8,
Can be unlocked. At this time, in order to prevent the cam stopper 8 from being pulled until the trigger lever 13 enters the hollow portion 8b, the frame side portion 24d and the driving portion 8a
And a play gap 25 is provided between them to set the timing.

Further, when locking, the switch projection 3d of the lock cam 3 presses the switch plate 30a of the switch 30, so that the locked and unlocked state can be confirmed electrically.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the illustrated embodiment of the present invention,
A solenoid fixing frame 20 of the solenoid 19 is fixed to the case 2 by a solenoid mounting plate 27, and a connector 28 and a switch 30 at the tip of a code 19 a of the solenoid 19 are mounted on a substrate 29. Regarding the double lock link mechanism 12, the operating pin 15 is triggered by the trigger lever-1.
Then, the trigger lever 13 is set on the fixing plate 16, the trigger support shaft 14 is penetrated and fixed, and then the trigger spring 17 is set. As for the cam stopper 8, after inserting the stopper shaft collar 11, the cam stopper 8 and the cam stopper spring 10 into the cam stopper mounting plate portion 7a of the bottom plate 7, the stopper shaft 9 is penetrated and grease is applied. Further, the solenoid fixing frame 20 is provided with the solenoid mounting plate 2.
7 is fixed with a solenoid fixing screw 26. First, the whole assembly is performed by inserting the fixing projection 29a of the substrate 29 on which the switch 30 is mounted into the mounting hole 2b of the case 2. Next, the double lock link mechanism 12 is engaged with the cam stopper 8 and the slide plate 24, respectively.
a into the mounting hole 2b of the case 2. Then, the lock cam 3, cam shaft 5, cam spring 4, and cam shaft color
6 is set. At this time, the end of the cam spring 4 is inserted into the gap between the bottom plate 7 and the lower portion of the camshaft collar 6, the camshaft 5 is inserted into the camshaft hole 3e, and then the lock cam 3 is inserted into the case 2 to thereby lock the lock cam 3 to the cam stopper. -8. Finally, the lid is closed with the case 2, and the fixing holes 7 d of the bottom plate 7 and the fixing holes 27 d of the solenoid mounting plate 27 are fixed to the case 2 with screws 31.

[0011]

As described above, in the electromagnetic snatch lock device according to the present invention, the cam stopper 8 is engaged with the lock cam 3, and the driving portion 8 of the cam stopper 8 is determined by the relationship of the lever ratio.
Since a can be unlocked by pulling a with a small suction force,
The operation is highly reliable, and the size of the solenoid can be reduced.

Further, since the double lock link mechanism 12 having the above configuration is incorporated, unauthorized unlocking caused by pressing the cam stopper 8 with a wire or the like can be prevented.

[Brief description of the drawings]

FIG. 1 is a front view of an electromagnetic snatch lock device according to an embodiment of the present invention.

FIG. 2 is a left side view of the electromagnetic snatch lock device.

FIG. 3 is a sectional view taken along the line AA in the locked state of FIG. 2;

FIG. 4 is a sectional view taken along the line AA in the unlocked state of FIG.

FIG. 5 is a front view of a double lock link mechanism incorporated in the electromagnetic snatch lock device.

FIG. 6 is a plan view of the double lock link mechanism.

FIG. 7 is a right side view of the double lock link mechanism.

FIG. 8 is a cam stopper of the electromagnetic snatch lock device.
It is sectional drawing of a part.

FIG. 9 is a left side view of the cam stopper.

FIG. 10 is a plan view of a solenoid portion of the electromagnetic snatch lock device.

FIG. 11 is a front view of the solenoid unit.

FIG. 12 is a layout view of a slide plate, a double lock link, and a cam stopper in a locked state.

FIG. 13 is an arrangement diagram of a slide plate, a double lock link, and a cam stopper in an unlocked state.

[Explanation of symbols]

 Reference Signs List 1 electric lock 2 case 2a long hole 2b mounting hole 3 lock cam 3a concave groove 3b engaging groove 3c locking surface 3d switch protrusion 3e camshaft hole 4 cam spring 5 camshaft 6 camshaft collar 7 bottom plate 7a cam stopper mounting Plate portion 7b Fixed plate portion 7c Fixing projection 7d Fixing hole 8 Cam stopper 8a Driving portion 8b Hollow portion 8c Spring fixing hole 8d Rear projection 9 Stopper shaft 10 Cam stopper spring 11 Stopper shaft collar 12 Double lock link 13 Trigger Lever 13a Arm portion 13b Suppression groove 14 Trigger support shaft 15 Operating pin 16 Fixing plate 16a Fixing projection 16b Locking plate portion 17 Trigger spring 18 Suppression shaft 19 Solenoid 19a Code 20 Solenoid fixing frame 20a Fixing hole 21 Plunger 21a Notch groove 22 Coil spring 2 3 Bolt 24 Slide plate 24a Slide protrusion 24b Window hole 24c Cam slope 25 Play gap 26 Solenoid fixing screw 27 Solenoid mounting plate 27a Fixing protrusion 27b Fixing plate 27c Switch hole 27d Fixing hole 28 Contact 29 Substrate 30 Switch 30a Switch plate 31 Screw 32 hooks

Claims (2)

(57) [Claims] A lock cam 3 rotatably supported by a cam shaft 5 fixed to the case 2 and urged to rotate clockwise by a cam spring 4; Stop shaft 1 fixed to case 2
8; a bottom plate 7 attached to the bottom of the case 2; and a cam stopper of the bottom plate 7 which is rotatably supported by a stopper shaft 9 fixed to the mounting plate portion 7a, and which is urged to rotate counterclockwise by a cam stopper spring 10. 8d
And a slide plate 24 for performing an operation of releasing the cam stopper 8 is fixed to the notch groove 21a, and is urged in the extension direction by the coil spring 22. Plunger-21
And a solenoid 19 for performing an expansion / contraction operation of the plunger-21.
An electromagnetic snatch lock device comprising a double lock link mechanism 12 for releasing the cam stopper 8 only by the operation of the plunger 21. 2. A trigger-support shaft 1 fixed to a fixed plate 16.
4; a trigger lever 13 rotatably supported by a trigger support shaft 14; an operating pin 15 fixed to the trigger lever 13; one end of which is hung on a locking plate portion 16b of a fixed plate 16; Of the trigger lever 13 so that the stop groove 13b at the tip of the arm portion 13a engages with the stopper engaging portion 8e of the cam stopper 8.
The electromagnetic snatch lock device according to claim 1, further comprising a double lock link mechanism (12) including a trigger-spring (17) for urging the rotation.