JPH0436367Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a solenoid lock device that uses a combination of a lock and a solenoid.

(Prior Art) This solenoid lock device has been conventionally used as a means for regulating the starting operation of various devices, but an important problem in practical use is the burnout of the solenoid coil due to continuous energization.

(Problem to be solved by the invention) Various mechanisms have already been proposed to prevent solenoid burnout, but the purpose of the present invention is to accurately prevent solenoid burnout while having a simplified configuration. It is an object of the present invention to provide a solenoid locking device that can

(Means for Solving the Problems) Hereinafter, using the reference numerals in the attached drawings, it will be explained that in the solenoid lock device of the present invention, the lock 1 fixed to the base plate 24 has a key inserted into the key hole 35. 19 rotates the rotor 2. Cylindrical cam 3 fixed to the rear end shaft portion 2a of the rotor 2
is a large diameter cylindrical surface 4 centered on the rotation axis of the rotor 2
and a small diameter cylindrical surface 5 on the outer surface.

The large diameter cylindrical surface 4 has a receiving groove 4 along the clockwise direction.
b and the recess 4a are provided in sequence. The small diameter cylindrical surface 5 is provided with a recess 5a further forward than the recess 4a in the clockwise direction.

Microswitch 6 fixed to base plate 24
The roller 8 of the actuator 7 is connected to the cylindrical cam 3.
The actuator lever 10 is engaged with the large-diameter cylindrical surface 4 of the actuator 10, and disengages from the recess 4a.
1 comes into contact with the small diameter cylindrical surface 5 of the cylindrical cam 3 and engages with and disengages from the recess 5a.

The solenoid 14 fixed to the base plate 24 is
The plunger 16 is urged back in the projecting direction by the spring 20. The lock lever 12 has its intermediate portion 12b pivotally connected to the base plate 24 by a pivot 18, and its base end 12a is pivotally connected to the tip of the plunger 16 by a pivot 17. A stopper protrusion 13 that engages and disengages from the receiving groove 4b of the cylindrical cam 3 is provided at the tip 12c of the lock lever 12.

The micro switch 6 is connected to the main switch 15.
The micro switch 9 is connected in series with the energizing circuit of the solenoid 14, and the micro switch 9 is installed in the starting circuit of the device.

When the stopper protrusion 13 is engaged with the receiving groove 4b, the roller 8 is engaged with the recess 4a, the micro switch 6 is in the on state, and the roller 11 is engaged with the recess 5.
When the cylindrical cam 3 is rotated clockwise while the micro switch 9 is in the OFF state by engaging the micro switch 9, the roller 11 that has escaped from the recess 5a at the rotation start end comes into contact with the small diameter cylindrical surface 5. While the micro switch 9 is in the on state, the recess 4a is closed at the end of rotation.
The length of the recess 4a in the circumferential direction is set to be longer than the length of the recess 5a in the circumferential direction so that the roller 8 that has escaped comes into contact with the large diameter cylindrical surface 4 and the micro switch 6 is turned off. .

(Function) When the solenoid 14 is not energized,
As shown in FIG. 1, the stopper protrusion 13 of the lock lever 12 is engaged with the receiving groove 4b of the large-diameter cylindrical surface 4, and this engaged state is caused by the spring 2 of the solenoid 14.
Since the cylindrical cam 3 is held with a bias of 0, the cylindrical cam 3 is restrained from rotating.

Since the cylindrical cam 3 is fixed to the rotor 2 of the lock 1, as the cylindrical cam 3 is restricted from rotating, the rotor 2 is also restricted from rotating, and the key 19 is inserted into the keyhole 35. Even if the rotor 2 is rotated, the rotor 2 cannot be rotated.

When the rotor 2 is restrained such that it cannot rotate, the microswitch 6 is in the on state because the roller 8 is engaged with the recess 4a, as shown in FIG. Another micro switch 9
Since the roller 11 is engaged with the recess 5a,
It is in the off state.

When the main switch 15 is turned on and the solenoid 14 is energized through the micro switch 6 which is in the on state, the plunger 16 is attracted to the main body of the solenoid 14 against the bias of the spring 20.

With this suction operation of the plunger 16, the lock lever 12 rotates in the counterclockwise direction in FIG. The restraints are lifted.

Therefore, insert the key 19 into the keyhole 35 and
When the cylindrical cam 3 is rotated in the clockwise direction in FIG.
Since the roller 11 comes into contact with the small diameter cylindrical surface 5 as shown in FIG. 3, the micro switch 9 is turned on, the starting circuit of the device is closed, and the device is ready for operation.

During the rotation of this cylindrical cam 3, the lock lever 12
The stopper protrusion 13 is pressed against the large diameter cylindrical surface 4 by a return spring 20 of the solenoid 14.

After the micro switch 9 is turned on as described above, the roller 8 that has moved inside the recess 4a escapes from the recess 4a at the end of rotation, and the roller 8 is brought into the large diameter cylindrical surface 4 as shown in FIG. Because of this, the micro switch 6 is turned off, and the solenoid 1 is turned off.
4 is cut off. Therefore, during operation of the device, the solenoid 14 is placed in a demagnetized state.

After using the device, turn off the main switch 15 and turn the rotor 2 and cylindrical cam 3 counterclockwise in FIG. Since the roller 11 engages with the recess 5a, the micro switch 9 is turned off and the starting circuit of the device is opened.

Further, since the roller 8 that was in contact with the large diameter cylindrical surface 4 engages with the recess 4a, the micro switch 6 is turned on. In this way, micro switch 6
Even if the solenoid 14 is in the on state, the main switch 15 is in the off state as described above, so the solenoid 14
energization will not be resumed.

Lock lever 12 that was in contact with large diameter cylindrical surface 4
When the stopper protrusion 13 finally engages with the receiving groove 4b, the cylindrical cam 3 and rotor 2 are again restrained from rotating. When the stopper protrusion 13 engages with the receiving groove 4b in this way, the plunger 16 of the solenoid 14 returns to the protruding position by the bias of the spring 20.

(Embodiment) In the illustrated embodiment, the rear end shaft portion 2a of the rotor 2, which is formed to have a rectangular cross section, is fitted into the central square hole 36 of the cylindrical cam 3, and is tightened to the cylindrical cam 3 with a screw 26. It is fixed. The micro switch 6 is fastened and fixed to the base plate 24 with a spacer 23 and a screw 27. The micro switch 9 is fastened and fixed to the base plate 24 with a spacer 25 and a screw 28.
Since the large diameter cylindrical surface 3 of the cylindrical cam 3 is formed in front of the small diameter cylindrical surface 5, the thickness of the spacer 23 is set to be thinner than the thickness of the spacer 25.

The microswitch 6 is arranged directly below the cylindrical cam 3, the microswitch 9 is arranged immediately beside the cylindrical cam 3, and the lock lever 12 is arranged vertically on the opposite side of the microswitch 9. The solenoid 14 is fastened and fixed to the base plate 24 by screws 29, and is disposed in a horizontally elongated manner directly above the cylindrical cam 3.

Return spring 2 for solenoid plunger 16
0, a compression coil spring is used, and the amount of protrusion of the plunger 16 is regulated by a stopper 21 fixed to a base plate 24. The base plate 24 is fastened to the case 30 by bolts 31 and nuts 32, and the terminal block 22 is fastened to the side surface of the case 30 by bolts 33 and nuts 34.

(Effects of the Invention) As described above, in the solenoid lock device of the present invention, a large diameter cylindrical surface 4 and a small diameter cylindrical surface 5 are provided on the outer surface of the cylindrical cam 3 fixed to the rotor 2 of the lock 1,
The large diameter cylindrical surface 4 has a receiving groove 4b along the clockwise direction.
and recesses 4a are sequentially provided, and the recesses 5 are provided in the small diameter cylindrical surface 5 in the direction ahead of the recesses 4a in the clockwise direction.
A is provided, and the micro switch 6 where the roller 8 of the actuator lever 7 contacts the large diameter cylindrical surface 4 is connected in series with the main switch 15 and incorporated into the energizing circuit of the solenoid 14.
Another micro switch 9 in which the roller 11 contacts the small-diameter cylindrical surface 5 is incorporated into the starting circuit of the device, and when the cylindrical cam 3 is rotated clockwise, the roller 11 that escapes from the recess 5a at the starting end of the rotation changes to the small-diameter cylindrical surface 5. The recess 4a is arranged so that the micro switch 9 comes into contact with the cylindrical surface 5, and the micro switch 9 turns on, and the roller 8, which has escaped from the recess 4a at the end of rotation, comes into contact with the large diameter cylindrical surface 4, turning the micro switch 6 into the off state. Since the length in the circumferential direction is set to be longer than the length in the circumferential direction of the recess 5a, when the rotor 2 is rotated clockwise with the key 19, the device is activated by turning on the micro switch 9. After that, the micro switch 6 is turned off, and the energizing circuit of the solenoid 14 is reliably cut off.Although the configuration is simplified, it is possible to accurately prevent the solenoid from burning out due to continuous energization. .

[Brief explanation of drawings]

FIG. 1 is a rear view of a solenoid lock device according to an embodiment of the present invention when the solenoid is not energized, and FIG. 2 is a plan view of the solenoid lock device. FIG. 3 is a rear view of the solenoid lock device when the solenoid is energized. 1...Lock, 2...Rotor, 3...Cylindrical cam, 4...Large diameter cylindrical surface, 5...Small diameter cylindrical surface, 6...
...Micro switch, 7...Actuator lever, 8...Roller, 9...Micro switch, 1
0... Actuator lever, 11... Roller,
12... Lock lever, 13... Stopper protrusion, 14... Solenoid, 15... Main switch, 16... Plunger, 17... Pivot, 18
...Axis, 19...Key, 20...Returning spring, 2
a... Rear end shaft of rotor, 4a... Recess in large diameter cylindrical surface, 4b... Receiving groove, 5a... Recess in small diameter cylindrical surface, 22... Terminal block, 23... Spacer, 24
...Base plate, 25...Spacer.

Claims (1)

[Scope of utility model registration request] A lock 1 which is fixed to the base plate 24 and whose rotor 2 is rotated by a key 19 inserted into a keyhole 35
It is fixed to the rear end shaft part 2a of the rotor 2, and has a large diameter cylindrical surface 4 and a small diameter cylindrical surface 5 centered on the rotation axis of the rotor 2 on the outer surface part, and the large diameter cylindrical surface 4 has a clockwise direction. A cylindrical cam 3 is provided with a receiving groove 4b and a recess 4a sequentially along the cylindrical cam 3, and a recess 5a is provided in the small diameter cylindrical surface 5 further forward than the recess 4a in the clockwise direction; The roller 8 of the actuator lever 7 contacts the large-diameter cylindrical surface 4 of the cylindrical cam 3, and the micro switch 6 engages and disengages from the recess 4a; A micro switch 9 that comes into contact with the small-diameter cylindrical surface 5 of the cylindrical cam 3 and engages and disengages from the recess 5a; a solenoid 14 that is fixed to a base plate 24 and has a plunger 16 urged back in the protruding direction by a spring 20; and a base. Intermediate section 12 on plate 24
b is pivoted by a pivot 18, and the proximal end 12a is pivoted by a pivot 1.
It consists of a lock lever 12 which is pivotally attached to the tip of the plunger 16 by 7 and has a stopper protrusion 13 on the tip 12c that engages and disengages with the receiving groove 4b. When the micro switch 9 is installed in the energizing circuit of the device and the stopper protrusion 13 is engaged with the receiving groove 4b, the roller 8 is engaged with the recess 4a and the micro switch 6 is in the on state. , while the roller 11 is engaged with the recess 5a and the micro switch 9 is in the OFF state, when the cylindrical cam 3 is rotated clockwise, the roller 11, which has escaped from the recess 5a at the rotation start end, touches the small diameter cylindrical surface 5. The roller 8 that has escaped from the recess 4a at the end of rotation contacts the large-diameter cylindrical surface 4 and the micro switch 9 is turned on, and the micro switch 9 is turned on. A solenoid lock device in which the length in the circumferential direction is set longer than the length in the circumferential direction of the recess 5a.