JPH0424972U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a preferred embodiment of the cylinder lock of the present invention, and Fig. 2 is a partially cutaway perspective view showing the inner cylinder of the above embodiment (the sliding member protrudes). , FIG. 3 is a partially cutaway perspective view showing the inner cylinder of the above embodiment (the sliding member is retracted), FIG. 4 is a sectional view showing the above embodiment, and FIG. 5 6 is a sectional view in another direction showing the above embodiment, FIG. 6 is a perspective view showing the sliding member arranged in the above embodiment, and FIG. 7 is a circuit diagram showing an electronic circuit used in the above embodiment. , FIG. 8 and FIG. 9 are partially cutaway perspective views showing a known cylinder lock (a key is inserted into the keyhole of the cylinder lock in FIG. 9). 171...Control pin, 183...Latch engagement hole, 31...Latch, 32...Coil spring, 33...Seat, 34...Solenoid, 40
...Battery, 47...Fourth switch, 48,
49...Switch, 5...Integrator circuit, 51, 54
, 55...transistor, 6...trigger circuit,
63, 66, 67...Resistor, 7. ... Battery test circuit, 71 ... Capacitor, 73 ... Zener diode, 75 ... Buzzer, 800 ... Cylinder lock, 801 ... Concave groove, 802 ... Shoulder for engagement, 803 ... Insulating sheet, 804 ... ...Elastic conductor, 809...Shoulder, 810...Outer cylinder, 811
... Inner cylinder, 812 ... Through hole, 813 ... Sliding member, 816 ... Ear part, 819 ... Keyhole, 820 ... Key, 94 ... Third switch, 95 ...
...NAND gate.

Claims (1)

[Claims for Utility Model Registration] (1) An outer cylinder, an inner cylinder having a keyhole, and a plurality of sliding members, each of which is a pin tumbler, housed in a through hole formed in the diameter direction of the inner cylinder. , a plurality of elastic conductors corresponding to each of the above-mentioned sliding members, and a latching mechanism;
A cylinder lock having a warning mechanism and an electronic circuit that is controlled by the plurality of sliding members and an elastic conductor to operate the latching mechanism and the warning mechanism, wherein each of the sliding members is located near the center. It is a piece-like body in which a slot is formed to serve as a key passage hole, and on one side there is a lock formed on the inner circumferential surface of the outer cylinder by partially urging an elastic conductor to the outside of the inner cylinder through the through-hole. A spring mechanism is fixed to the mating shoulder portion to prevent rotation of the inner cylinder; each of the elastic conductors is formed on the inner circumferential surface of the outer cylinder together with the insulator via an insulator. When each of the sliding members is urged to the outside of the inner cylinder from the through hole, it comes into contact with the corresponding elastic conductor and is pulled into the through hole. If this happens, it will no longer make contact with the elastic conductor,
Further, when a key is inserted into the keyhole, the key is completely retracted into the through hole through the slot of each of the sliding members to enable rotation of the inner cylinder, Each of the above-mentioned sliding members and each corresponding elastic conductor constitute a first switch, and when the above-mentioned sliding member is urged outward from the inner cylinder and comes into contact with the elastic conductor, the first switch is activated. When one switch is turned on and the sliding member or the inner cylinder does not come into contact with the elastic conductor, the first switch is turned off, and the cylinder lock is further controlled. The control pin is housed in a housing hole provided in the inner part of the outer tube, and the tip thereof is comes into contact with a recess formed on the surface of the inner cylinder, and when the inner cylinder rotates,
When the concave portion is inclined and the control pin is pressed to contact the elastic conductor and the second switch is turned on, if the inner cylinder does not rotate, the two are no longer in contact with each other. The latching mechanism is configured to turn off the second switch, and the latching mechanism includes a latch disposed on the seat and made of a ferromagnetic material, and a solenoid connected to the electronic circuit, and the solenoid is configured to turn off the second switch. When actuated, the seat is configured to move and engage the latch with a latch engagement hole formed in the inner cylinder, thereby inhibiting rotation of the inner cylinder, and the electronic circuit is configured to prevent rotation of the inner cylinder. , a plurality of third switches connected to each of the first switches, and NA connected to these third switches.
an ND gate, a fourth switch connected to the second switch, an integral circuit for delaying the operation of the latching mechanism and the warning mechanism, and a relay for controlling the operation of the warning mechanism and the latching mechanism. The electronic circuit is configured to have a trigger circuit and a battery test circuit capable of emitting a warning signal by the warning mechanism if the voltage level of the battery set drops below a predetermined degree; When a key that does not exist is inserted into the keyhole, the first switch is turned off, the second switch is also turned off, and the trigger circuit is activated after a predetermined period of time controlled by the integration circuit has elapsed. If the warning mechanism and solenoid are subsequently actuated to engage the latch with the latch engagement hole and inhibit rotation of the inner cylinder by activating the relay, and the correct key is inserted into the keyhole; The first switch above is OFF.
The cylinder lock is configured such that when the lock is turned on, the second switch is turned on to disable the trigger circuit, the latching mechanism, and the warning mechanism. (2) The cylinder lock according to claim 1, wherein the warning mechanism is capable of emitting an audio signal.