CN101906906B - Electronic relay semiconductor automatic mechanical lock and key anti-theft mechanism - Google Patents

Abstract

The invention aims at providing an electronic relay semiconductor automatic mechanical lock and key theftproof mechanism, comprising a key, a lock seat, a lock pin, a spring, a lock core, a circuit part and an electromagnetic relay, wherein the circuit part comprises a triode, an amplifying power supply, a base electrode resistor, a load resistor, an input capacitor and an output capacitor; the base electrode resistor is connected between a triode base electrode and the anode of the amplifying power supply; the load resistor is connected between a triode collector and the anode of the amplifying power supply; the input capacitor is connected between the triode base electrode and a transmitting electrode; the output capacitor and the electromagnetic relay are connected in series between the collector of the triode and a transmitter; the cathode of the amplifying power supply is connected to a transmitting electrode of the triode and earthed; the anode of the amplifying power supply is connected to the load resistor; the base electrode resistor is arranged in the key; and the circuit part except the base electrode resistor and the electromagnetic relay are arranged in the lock seat. The invention has low requirement on the manufacturing process and manufacturing cost and ensures that common locks in the household and common safety field can be renewed.

Description

Electronic relay semiconductor automatic mechanical lock and key anti-theft mechanism

technical field

The invention relates to an anti-theft mechanism for household or public safety.

Background technique

Anti-theft technology is a technology that has existed since ancient times. The existing household mechanical anti-theft lock models at home and abroad are basically based on the same model, especially the advancement of modern technology, which makes it extremely easy to crack the anti-theft lock. The key is everywhere. It can be configured, which makes it more and more difficult to prevent theft. Moreover, due to the increasing use of locks, traditional locks have fallen into the embarrassing situation of "one key opens two locks". However, the introduction of high-level safety locks from abroad involves the constraints of manufacturing technology, production costs and intellectual property rights, making it difficult to achieve localization. Thereby there is an urgent need for a novel anti-theft lock with innovative self-owned intellectual property rights, high content, low manufacturing process requirements and low manufacturing costs. The common locks used in household and public safety fields can be updated.

Contents of the invention

The purpose of the present invention is to provide a mechanical and electrical integration, automatic locking electronic relay semiconductor automatic mechanical lock and key anti-theft mechanism.

The purpose of the present invention is achieved like this:

The electronic relay semiconductor automatic mechanical lock and key anti-theft mechanism of the present invention includes a key, a lock seat, a lock pin, a spring, and a lock cylinder, and is characterized in that it also includes a circuit part and an electromagnetic relay, and the circuit part includes a triode, an amplifying power supply, and a base Resistance, load resistance, input capacitance and output capacitance, the base resistance is connected between the base of the triode and the positive pole of the amplifying power supply, the load resistance is connected between the collector of the triode and the positive pole of the amplifying power supply, and the input capacitor is connected between the base of the triode and the emitter The output capacitor and the electromagnetic relay are connected in series between the collector of the triode and the transmitter, the negative pole of the amplifying power supply is connected to the emitter of the triode and grounded, the positive pole of the amplifying power supply is connected to the load resistor, and the base resistor is installed in the key. The circuit part and the electromagnetic relay other than the polar resistor are installed in the lock seat.

The present invention has the advantages of low manufacturing process requirements and low manufacturing cost, so that common locks in household and public safety fields can be updated.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a partial schematic diagram of the circuit of the present invention;

Fig. 3 is a key model figure of the present invention;

Fig. 4 is a model diagram of the lock cylinder of the present invention;

Fig. 5 is a schematic perspective view of the present invention;

Fig. 6 is a schematic cross-sectional view of the present invention.

Detailed ways

The present invention is described in more detail below in conjunction with accompanying drawing example:

1-6, the electronic relay semiconductor automatic mechanical lock and key anti-theft mechanism of the present invention includes a key 1, a lock seat 2, a lock pin 3, a linkage spring 4, an electrode spring 5, a lock cylinder 6, a circuit part and an electromagnetic relay. The circuit part is set in the lock seat, and there is a resistance inside the key, that is, the base resistance _RB . When the key is inserted into the keyhole, the circuit is connected, and the electromagnetic relay is activated to control the movement of the marbles. At the same time, the key can be turned to achieve the unlocking effect. The movement displacement of the locking pin (ball) Δx=kI _C , k is the proportional coefficient, and I _C is the current of the circuit where the resistance R _C is located. The circuit part is a single tube amplifying circuit, which is a common emission amplifying circuit composed of triode, amplifying power supply E _C , base resistor _RB , load resistor R _C , input capacitor C ₁ and output capacitor C ₂ . The base resistor R _B is connected between the base of the triode and the positive pole of the amplifying power supply E _C , the load resistor R _C is connected between the collector of the triode and the positive pole of the amplifying power supply E _C , and the input capacitor _C1 is connected between the base of the triode and the emitter. Between, the output capacitor C ₂ and the electromagnetic relay T are connected in series between the collector of the triode and the transmitter, the negative pole of the amplifying power E _C is connected to the emitter of the triode and grounded, and the positive pole of the amplifying power E _C is connected to the load resistor R _C . The electromagnetic relay (indicated by T) and the output capacitor _C2 are connected in series between the collector of the triode and the transmitter, that is, the connection position is that point M and point N of the circuit part are connected to the input terminal of the electromagnetic relay to control its operation. At the same time, its output terminal (that is, the displacement output terminal) lock pin 3 (ball) is connected to a device that converts a current or voltage signal into a displacement signal, and is only sensitive to a certain range of current or voltage signals, that is, the base The current I _B controls the collector current I _C , thereby adjusting the output voltage U0 to adjust the electromagnetic relay to control the movement displacement of the locking pin 3 (the marble), and the transfer formula is Δx=kI _C .

The specific description is as follows: 1. The NPN triode current amplification core is adopted. 2. The base resistance RB is connected between the base of the triode and the anode of the amplified power supply E _C , so that the emitter junction of the triode is forward biased, and a suitable base current I _B is provided for the triode, and I _B flows through _RB The current, from the KVL circuit, I _B R _B + U _RE = E _C , then I _B = (E _C - U _BE )/R _B , U _BE is the voltage between the base and the emitter, generally there is a silicon tube U _BE ≈0.6V Germanium tube U _BE ≈0.2V. When EC>U _BE , then I _B ≈ E _C /R _B . 3. The collector load resistor R _C is connected between the collector of the triode and the positive pole of the power supply E _C . It has two functions. The first function is to cooperate with the resistance value _{of RB} to ensure the collector junction reflector of the triode, and to ensure that the emitter junction of the triode is forward biased such that U _CE > U _RE , so that the triode is in an amplified state. From KVL, I _B R _B + U _BE = E _C , I _C R _C + U _CE = E _C In order to satisfy U _CE > U _BE , the collector current I _C = β I _B , β is the current amplification factor, and the band Enter the formula I _B ≈ E _C /R _B to get R _B >βR _C . It can be seen that when the resistors R _C and R _B satisfy the relationship of the formula R _B > _βRC , the reverse bias of the triode collector junction can be guaranteed. 4. The input capacitor C ₁ is connected between the base and the emitter of the triode, the output capacitor C ₂ and the electromagnetic relay are connected in series between the collector and the emitter of the triode, and the input capacitor C ₁ and the output capacitor C ₂ are also called coupling capacitance. 5. The negative pole of the amplified power supply E _C is connected to the emitter stage of the triode, the positive pole of the amplified power supply E _C is connected to R _C , and the negative pole of the amplified power supply E _C is grounded.

To sum up, the electronic relay semiconductor automatic mechanical lock and key anti-theft mechanism controls the collector current I _C through the base current I _B , and the I _C is converted to the control pin 3 (pin 3) controlled by the electromagnetic relay through the circuit conversion. ) movement displacement Δx=kI _C , and the electromagnetic relay has a limitation on I _C , that is, I _C can only change within a fixed range. When the power supply voltage is fixed, use the single-tube amplifier circuit to change the size of the base resistor R _B configured in the key 1 to adjust I _B , and use the electromagnetic relay to achieve the purpose of adjusting Δx to control the movement of the lock pin 3 (ball) and finally achieve The purpose of unlocking. Since different electronic relay semi-conductor automatic mechanical locks and key anti-theft mechanisms have different requirements on the range of _IC , the purpose of anti-theft can be achieved by adjusting _RB , and the key cannot be unlocked simply by configuring the key from the shape of the key.

Claims (1)

1. Electronic relay semiconductor automatic mechanical lock and key anti-theft mechanism, including key, lock seat, lock pin, spring, lock cylinder, is characterized in that: it also includes circuit part and electromagnetic relay, circuit part includes triode, amplifying power supply, base Resistance, load resistance, input capacitance and output capacitance, the base resistance is connected between the base of the triode and the positive pole of the amplifying power supply, the load resistance is connected between the collector of the triode and the positive pole of the amplifying power supply, and the input capacitor is connected between the base of the triode and the emitter The output capacitor and the electromagnetic relay are connected in series between the collector and emitter of the triode, the negative pole of the amplifying power supply is connected to the emitter of the triode and grounded, the positive pole of the amplifying power supply is connected to the load resistor, and the base resistor is installed in the key. The circuit part and the electromagnetic relay other than the polar resistor are installed in the lock seat.

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