JPS6017912B2 - locking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a coin device, and more particularly, it is an object of the present invention to provide a locking device that is applied to a door and is electrically controlled to ensure locking and unlocking.

Lock devices of various configurations are known. Among them, there is one in which a key-operated door can be opened and closed with the mirror part of the lock protruding, and can also be locked and unlocked.
For example, a receiving member having a concave portion that receives the key of the door in a protruding state is provided on the door frame, and when the door is closed, a stopper closes the portion of the concave portion from which the lock can exit. There is a known structure in which the stopper is locked so that it cannot exit from the recessed part, and when the lock is locked, the stopper is unblocked by electrical operation or the like. However, such a lock is locked when the door is opened by electrical operation or the like, and then closed after one person raises the door and passes through. Therefore, with such a lock, the lock must be operated each time the door is opened or closed, which is inconvenient and even dangerous in the event of a fire or other emergency or when a large number of people are passing through. Also, when the door is opened, the stopper is released,
There is a known lock that maintains the unlocked state for a preset period of time after the lock is operated, allowing the door to be opened and closed during that time. If the stopper is left open for a long time, the stopper will be in the locked position, so even if you try to close the door, the locking punch may hit the stopper and you will not be able to close the door. There are also devices that can be locked or locked, but the structure is complicated and cannot be obtained economically. The present invention improves such drawbacks and has various other features, and includes a handle element having a receiving hole for receiving the lock hole of the lock from the opening direction of the door, and the lock punch received in the receiving hole. A locking means is provided for locking the opening/closing means in both the locked state and the unlocked state, and these are operated by two solenoids to ensure reliable operation. A locking device capable of locking and unlocking is provided.

Further, the present invention provides a key device that can electrically control the operations of the opening/closing means and the locking means to reliably select a locked state or an unlocked state. The present invention will be described below along with examples with reference to the drawings.

The door 10 is provided with a lock of the well-known type having a lock punch 16 (shown in double-dashed lines in FIG. 5) in conjunction with a key (not shown) inserted into a knob 12 or keyhole 14. ing.

Referring to FIGS. 1 to 3, there is a wall element including a case 20 at a position of the wall 18 facing the lock punch, and a wall element including a case 20 is engaged with a part of the case to surround the lock punch in a protruding state. Ward area 22
is provided. A gate 24 is formed in the engagement zone so that the lock can enter or leave the engagement zone while remaining in a protruding state. The case is provided with opening/closing means for controlling the lock punch so that it does not move from the closed door direction to the open door direction in the locked state. The opening/closing means has a fixed part 26 and a movable part 28, and the movable part has a blocking wall 30 having a substantially U-shaped cross section, and the blocking wall has a connecting plate 34 having a projecting piece 32 at one end. are connected. The fixing portion is provided with an insertion hole 36 through which the blocking wall is inserted and guides movement of the blocking wall. The fixing portion is provided with a flange 38, and the core flange is attached to the front plate 42 of the case with screws 40. Further, a joint plate 44 may be provided on the front plate. The blocking arm is located away from the engagement zone when the lock is in the unlocked state (FIG. 2), and within the engagement zone when the lock is in the locked state (FIG. 4). The gates of the above-mentioned engagement zones are formed in opposite positions depending on how the door is opened/closed or installed, whether the door is cabinet-facing or outward-opening, right-handed or left-handed, as shown in Figure 3. In any case, the above-mentioned insertion holes are provided in both the upper and lower wall surfaces of the fixing part so that the fixing part can be conveniently used, and the fixing part can be attached upside down. However, depending on the case, the insertion hole in the lower wall surface of the fixing part may not be provided. The opening/closing means has a moving solenoid 46 for operating the movable part, and is also provided with a locking means for locking the movable part in the moved position.

Although any known type of solenoid 46 can be used, the one shown has a coil 48 and another coil 50 wound around a winding frame 52 and supported by an inner cylinder 54.

The inner cylinder is made of aluminum, copper, synthetic resin, or other non-magnetic material, and its ends are made of iron, nickel, or other non-magnetic materials.
It is joined to a support frame 56 made of a magnetic material such as a silicon steel plate, and the support frame is designed to reduce leakage magnetic flux. One end of a shaft 58, which is moved by the solenoid 46, is connected to the protruding piece 32 of the blocking wall using a screw, pet, insert, or other connecting means.

The locking means includes a stopper 32 (FIG. 8) that is moved as the locking solenoid 60 is energized and deenergized, and the shaft has a stepped portion 64 with which the stopper engages and another stepped portion. 66 are marked at intervals approximately equal to the travel length of the blocking arm. Above solenoid 6
0 is provided on the upper frame side 68 in FIGS. 5 and 6, which faces the support frame 56 of the solenoid 46 in the longitudinal direction, and the solenoid 46, the solenoid 60, the blocking wall, etc. are installed in the case. They are arranged so as to be aligned in the longitudinal direction as a whole, so that they can be easily accommodated in a narrow space such as a basket.

the above.

The locking means includes a movable contact piece 70 moved by the solenoid 60, and the movable saddle piece has two wings 72, 74 that open at an angle slightly greater than a right angle. One of the blades is positioned to face the magnetic pole 76 of the solenoid 60, and the other blade is positioned to face the front plate of the case, and a spring 78 is provided between them, so that when the solenoid 60 is not energized, one of the blades The blades 74 are biased in a direction away from the magnetic pole 76. One end of a transmission shaft 80 is connected to the roots of both wings by welding, gluing, press-fitting, or other connecting means. The transmission shaft is formed by a small hole (not shown) provided in a frame side 68 of the support frame 56 and another frame side 82 opposite thereto. It is inserted into the support frame and fixed to the support frame. The end of the transmission shaft is located between the frame side 82 and the engagement zone, and the stopper is connected to the end of the transmission shaft by the same means as the wing. The stopper has a locking hole 84, the shape of which is elongated so that when the wing 74 is attracted to the magnetic pole, the stopper moves and its edge engages the stepped portion of the shaft. It has been formed. In addition, on the side of the stopper to which the transmission shaft is connected, a mantle 86 is provided on the lower surface of the stopper so that a part of the periphery of the elongated hole extends, and a protrusion 88 is provided on a part of the nuclear mantle. (FIG. 9), the shaft can be smoothly moved when changing the state from the locked state to the unlocked state or from the unlocked state to the locked state. FIG. 10 shows a block diagram showing an electrical control section for driving the solenoid 46 and the solenoid 60.

The electrical control section includes a delay circuit 92 whose starting is controlled by switching means 90.

The output state of the delay circuit is transmitted to the coil 48 of the solenoid 46 via the buffer circuit 94 and the drive relay 96.
50. The solenoid 60 is wired to be energized as soon as the switching means 90 is closed, and a delay circuit 92 is accordingly activated for a predetermined delay time (preferably from about 5 seconds to about 0.2 seconds). After approximately 0.5 seconds have elapsed, the electrical state of the output terminal of the delay circuit changes (changes from a low potential to a high potential, or from a high potential to a low potential). The change is transmitted to the drive relay 96 via the buffer circuit 94,
The drive lj is adapted to respond to the change. When the drive relay operates, current is supplied from the box source 98 to the coil of the solenoid 46, and the shaft of the solenoid is pulled up. Note that if a circuit having sufficient output power to directly drive the solenoid 46 is used as the buffer circuit, the drive relay can be omitted. Further, if the output of the delay circuit can directly drive the drive relay, the buffer circuit may not be provided.
The delay circuit mentioned above is a CR timer type, for example, TT.
L. CMOS and other logic ICs, timer ICs, transistors, FETs, PUTs, SCRs, triacs, and other semiconductor elements combined with time constant circuits consisting of resistors and capacitors can be used, and oscillation circuits can be used as counter-type ones. A combination of a flip-flop, a counter IC, a shift register, and other circuits can be used.

In addition, a battery can be used as a power source, or direct current can be obtained by rectifying an alternating current power source, or both methods can be used together. Therefore, for example, a push button switch is provided as the switching means 9 near the door,
To explain the operation of locking and locking using this method, in the locked state, the blocking wall of the movable part is in the position shown in FIG. 4.

Therefore, when the push button switch is operated and the switch is closed, the engagement between the stepped portion 64 of the shaft and the stopper is released, and the shaft is then pulled up by the solenoid 46, so that the blocking arm is also pulled up. When pulled up, the blocking wall moves out of the engagement zone as shown in FIG. Therefore, when the push button switch is opened, the solenoid is demagnetized and the blocking wall is locked at a moved position outside the engagement zone by the stopper. As a result, the lock punch becomes free in the direction of opening the door, allowing the door to be opened and a person to pass through. At this time, the stopper remains locked at a position away from the engagement zone, so the door will not become locked even if a large number of people, fire brigade, etc. open and close the door one after another. . After closing the door, close the pusher switch again, and open the pusher switch before the set time of the delay circuit elapses, so that only the solenoid 60 is energized, and the blocking wall is temporarily released from the lock by the stopper. It falls under its own weight and returns to the position shown in FIG. 4, where it is locked again by the stopper and becomes locked.

Therefore, there is no fear that a thief will be able to break open the lock when the door is locked. In the illustrated example, the blocking arm is configured to fall under its own weight when changing from the unlocked state to the locked state, but it may be biased by a spring or the like in the direction to obtain the locked state. Furthermore, if aluminum is used for the inner cylinder, the switching means can be operated to
When the power supply to the solenoid 2 is cut off, the solenoid 46 can be demagnetized a little later than the solenoid 60, and locking can be ensured. Further, even if a capacitor is provided in parallel with the drive coil of the drive relay or a capacitor is provided in parallel with the coil of the solenoid, the solenoid 46 can be demagnetized with a slight delay in the same manner as described above. The travel length of the blocking wall should be determined according to the width of the lock punch. For locks that are commonly used, the configuration shown in Figure 10 above is sufficient, but especially for wide lock punches. When applied to a lock with
The necessary travel length for such a wide lock can be obtained sufficiently. FIG. 11 shows an example of a block diagram for this purpose. A one-shot multivibrator 100 and a flip-flop 102 that is triggered by a change in the output state of the one-shot multivibrator are provided after the delay circuit 92. A combination of a buffer circuit 94a and a drive relay 96a whose operation is controlled according to a change in the output state of the flip-flop, and another buffer circuit 94 whose operation is controlled according to a change in the output state of the one-shot multivibrator.
b and another combination of drive relays 96b are provided. In addition to this configuration, various known electronic circuits may be combined to achieve the same effect. You can also do it. In the above configuration, the operation when the drive relay 96b controls the current supply to the coil 50 and the drive relay 96a controls the current supply to the coil 48 will be described below.

When the one-shot multivibrator is triggered by a change in the output state of the delay circuit, the coil 50 is energized and the shaft 58 is pulled up during the output pulse width of the one-shot multivibrator.

When the flip-flop is triggered by the falling edge of the output pulse of the one-shot multiviprator, the coil 50 is de-energized, the coil 48 is energized, and the shaft 58 is further pulled up. FIG. 12 shows an example of an electric circuit constructed based on the block diagram of FIG. 10. Delay circuit 92 /Agate 104
, has a time constant circuit consisting of a NOR gate 106 operating as an inverter, a capacitor 108, and a resistor 110, one input terminal of the /Agate 104 is connected to the output terminal of the NOR gate 106, and the other input terminal is grounded. There is.

The resistor 110 and one terminal of the capacitor 108 are connected to the input terminal of the /Agate 106, respectively, the other terminal of the capacitor is grounded, and the other terminal of the resistor is connected to the lead 112. The buffer circuit 94 has a transistor 114 and a transistor 116, and a drive relay 96 is connected between the collectors of these transistors and the IJ node. The emitter of the transistor 116 is grounded, and the base of the transistor 116 is grounded.
It is connected to emitter 4. The output of the NOR gate 104 is connected to the base of the transistor 114 via a resistor 118. The positive terminal of the power supply 98 is connected to the lead 112 via the switching means 90.
and one end of the coil of the solenoid via the contact of the drive relay. Further, the end of the coil and the negative terminal of the power source are grounded. A diode 120 connected in parallel to the resistor 110 and a resistor 122 connected between the lead 112 and the ground connect the capacitor 108 when the switching means is operated and the power supply to the lead 112 is cut off. It is provided in order to discharge the electric charge that has been charged in the battery in a short period of time. Further, the diode 124 is provided to prevent overvoltage from being applied to the transistors 114 and 116. When the switching means is operated and a voltage is applied from the lead wire, the solenoid 60 is energized and the locking means is unlocked.

Then, the capacitor 108 of the time constant circuit is charged, and when the terminal box pressure exceeds the threshold level of the /Agate 106, the output of the /Agate 106 becomes "0". Therefore, the output terminal of the NOR gate 104 becomes "1", and accordingly, the transistor 114 and the transistor 116 become conductive.
As a result, the drive relay is energized and its contacts are closed, current is supplied from the source 98 to the coil of the solenoid, and the blocking wall is pulled up together with the shaft. When the switching means is released and returned to its original state, the solenoid 60 is demagnetized and the locking hole of the stopper engages with the stepped portion 66 of the shaft.
The blocking wall is locked in a raised state. Another embodiment that operates similarly to that shown in FIG. 12 above is shown in FIG. 13. In this example, IC1 is used as a delay circuit.
26 are used. As the IC, for example, a timer having a similar function such as NE-555 (trade name) manufactured by Signetakes, Inc. of the United States, M7555 (trade name) manufactured by Interseal Corporation (United States), etc. can be suitably used. Resistance 128, variable resistance 13
A time constant circuit including 0 and a capacitor 132 is provided at the No. 4 terminal of the IC, and when the terminal voltage of the capacitor becomes approximately equal to the power supply voltage, the state of the No. 3 terminal of the IC becomes "1".

The third terminal is connected to the base of a transistor 134 that operates as a buffer circuit. The No. 8 terminal of the IC is a power supply terminal and is connected to the lead 112. Further, the No. 5 terminal of the IC is grounded via a capacitor 136, and the No. 1, No. 2, and No. 6 terminals are directly grounded. The operation of the circuit is almost the same as in the case of FIG. 12 above, and when the switching means is closed, the solenoid 60 is energized and at the same time the timer based on the above IC is started. After a predetermined delay time has elapsed, the third terminal of the IC becomes "1" and the transistor 134 becomes conductive. As a result, the drive relay 96 is energized and its contacts are closed.
6 is excited, and the same result as in the case of FIG. 12 above is obtained. Note that the delay time can be changed by adjusting the variable resistor 130. Figures 10 to 1
The switching means in Figure 2 is a push-pin switch,
Limit switches and other mechanically operated switches, contact relays, non-contact relays, and other electronic circuits having similar functions can be used.

For example, if a bimetallic fire detection element is used as the switching means or a non-contact relay that responds to changes in the state of a heat-sensitive element is used, a lock that can be automatically unlocked in the event of a fire is tied. It is also possible to provide a plurality of switching means. For example, as shown in FIG. 14, a diode 138 is connected in the direction in which the current flows from the lead 112 side to the solenoid side, and a diode 138 is connected between the terminal of the solenoid 60 and the positive terminal of the power supply. switching means 140 between
If provided, the switching means can be used for locking operation, and the switching means 90 can be used for changing money operation, and as in the case of the above embodiment, when locking is performed, before the set time of the delay circuit elapses. There is no longer any need to take care to open the switching means. The time from closing to opening the switching means for locking operation may be arbitrary.
Furthermore, a contact relay or a non-contact switch made of a semiconductor element is used as the switching means, and the switching means is activated when a predetermined floor space number is inputted from, for example, a keyboard 142 (FIG. 1) installed near the door. By combining a control device using a microcomputer or a logic circuit, a lock device that does not require a key can be obtained.
In addition, switching means that adapts to the output of a photoelectric element such as a phototransistor or CDS, an ultrasonic sensor, or a wireless receiver may be installed to enable remote control, or a buzzer sound or an acoustic signal of a specific frequency may be used. It can be configured so that it is unlocked or locked when it is woven, or it can be configured in various other ways. The present invention is constructed as described above, and by employing two solenoids, the construction is significantly simplified, and the delay circuit allows for reliable engagement and disengagement of the stopper and the shaft.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a schematic diagram showing the state of use, FIGS. 2 to 4 are perspective views, FIGS. 5 to 7 are sectional views, and FIG. 8 is a diagram showing the locking mechanism. A perspective view showing a part, Fig. 9 is a schematic sectional view of Kiiso, Figs. 10 and 11 are block diagrams of the electrical system, Figs. 12 and 13 are electrical circuit diagrams, and Fig. 14 is a partial block diagram. 1 is an electrical circuit diagram including a diagram. 10...Door, 12...Knob, 14...Keyhole, 18...Hajime, 20...
Case, 24...Closing, 28...Movable part, 30. ．． - Blocking wall, 46... Moving solenoid, 58. ．． ·shaft,
60...Lock solenoid, 62...Stopper, 64,
66... Stepped portion, 90... Switching means, 92...
...Delay circuit. Mackerel 1 Figure 2 Grandchild 3 Figure Scroll 4 Quality of Life Figure Tsutomu Rei 6 Figure Grave Wa Figure Stem 8 Figure Hair Q Figure Dormitory 10 Prisoner 11 Figure Mother 612 Figure Traditional 13 Figure Ministry E14 Figure

Claims (1)

[Claims] 1. An opening is formed in the side of the case so that the lock lever can enter and exit, a movable part having a blocking wall is provided in the case so as to be movable to open and close the opening, and the movable part is operated by a solenoid for movement. A stopper operated by a locking solenoid is provided, and the locking solenoid moves the stopper toward and away from the side surface of the shaft, and when the blocking wall is in a position blocking the opening. The shaft is provided with stepped portions that engage with the stoppers at intervals corresponding to the moving distance of the blocking wall so that the stoppers engage with each other when the shaft is in the open position, and the stepped portions of the shaft and the stopper A delay circuit is provided that starts when a current is applied to the locking solenoid so that the blocking wall moves through the shaft after the engagement is released, and the delay circuit is activated and the locking solenoid is activated. Switching means for controlling the supply of current is provided, and the output terminal of the delay circuit is electrically connected to the moving solenoid so that current is supplied to the moving solenoid as the output state of the delay circuit changes. Combined locking device.