CN114320037A - Self-recovery waterproof NFC electronic padlock - Google Patents

Abstract

The invention relates to a self-recovery waterproof NFC electronic padlock, which is designed to solve the technical problems that the existing similar passive locks are less designed with NFC technology, have high energy consumption, and have poor stability and accuracy. The module of the electronic padlock is fixed in the lock case through the bottom cover at the bottom of the lock case, and one end of the top rod protruding from the top of the module is in contact with the marbles on both sides of the lock case; The other end of the cylinder is respectively provided with a round end head, the hemispheric head at one end of the marble is pressed against the fixed end of the lock hook and the inner groove of the movable end through the second spring, and the round end of the other end of the marble is at the same time with the ejector rod. The semicircular grooves symmetrically arranged on both sides of one end are in contact with each other; the outer diameter of the other end of the ejector rod in the module is provided with a third spring. , the upper inclined surface of one end of the cam transmission part of the motor is fitted with the lower inclined surface of the cam connecting part.

Description

Self-recovery waterproof NFC electronic padlock

technical field

The invention relates to an electronic padlock, which is a self-recovery waterproof NFC electronic padlock.

Background technique

A padlock is a lock that is equipped with a ring-shaped lock hook or in-line lock beam that can be buckled on the lock body. It is directly buckled with the lock body through the lock hook or the lock beam to form a closed lock. Padlocks with QR code scan code unlocking, electronic password unlocking, etc. For example, the application number 202021343531.8 disclosed in the Chinese patent documents, the date of authorization announcement is 2021.01.15, the utility model name is "Bluetooth padlock"; another example is the application number 201910402855.X disclosed in the Chinese patent documents, the application publication date is 2019.08.09, the name of the invention " Smart Padlock". At the same time, Near Field Communication (NFC for short) is an emerging technology. Devices using NFC technology (such as mobile phones) can exchange data when they are close to each other. Evolved from the integration of RFID) and interconnection technology, by integrating the functions of inductive card reader, inductive card and point-to-point communication on a single chip, using mobile terminals to realize mobile payment, electronic ticketing, access control, mobile identification, Anti-counterfeiting and other applications. In recent years, as the technology of NFC has become more and more mature, there is still no mature NFC padlock for industrial application scenarios in the market. Therefore, if the industrial NFC padlock can emerge as the times require, combined with the advantages of a new generation of identification technology, it will gradually replace it. Mechanical locks have become the new protagonist of the lock industry.

SUMMARY OF THE INVENTION

In order to overcome the above deficiencies, the purpose of the present invention is to provide a self-recovery waterproof NFC electronic padlock in the art, so that it can solve the problem of poor overall effect and anti-dismantling effect caused by poor structural design of existing similar products, passive The locks are less designed with NFC technology, the technical problems of high energy consumption, poor stability and accuracy. The purpose is achieved through the following technical solutions.

A self-recovery waterproof NFC electronic padlock, the lock hook of the electronic padlock is U-shaped, one end of the lock hook is a fixed end, the other end of the lock hook is a movable end, and the fixed end of the lock hook is inserted through the top of the lock shell and fixed to the In the lock case, the movable end of the lock hook pops out of the lock case and is unlocked by the rotation of the fixed end; the module is fixed in the lock case by the bottom cover and the first sealing ring at the bottom of the lock case, and one end of the top rod protruding from the top of the module is respectively connected with the lock case. The marbles on both sides of the shell are in contact with each other, the module is provided with a circuit board and a motor, the circuit board is provided with a battery, and the circuit board is connected with the motor through a line. The key point of its structural design is that one end of the marble is respectively provided with a semicircular hemispherical head, the other end of the cylinder at the bottom of the hemispherical head of the marble is respectively provided with a rounded end, and the hemispherical head at one end of the marble is respectively opposed to the lock hook through a second spring. The fixed groove on the inner side of the fixed end, and the movable groove on the inner side of the movable end of the lock hook, the round end of the other end of the marble is in contact with the semicircular grooves symmetrically arranged on both sides of one end of the ejector rod; the outer diameter of the other end of the ejector rod in the module is provided with The third spring, the end top rod is connected with one end of the cam connector in an L-shape, the other end of the cam connector is provided with a lower inclined surface arranged obliquely, a motor is provided on one side of the top rod in the module, and the motor shaft of the motor is set There is a cam transmission piece, and the upper inclined surface of one end of the cam transmission piece fits with the lower inclined surface of the cam connecting piece. The above structure enables the balls of the electronic padlock to be indirectly driven by the ejector rod and the cam structure composed of the cam connecting piece and the cam transmission piece. That is, when the ejector rod is driven down into the module by the motor, the cam connector and the cam transmission part, the lock hook can be pulled out, and the lock hook and the marble can be disengaged to realize the unlocking; after the lock hook is locked, the motor is powered off to drive the cam transmission part. When reset, the cam connector and the ejector rod are reset, the ejector rod extends out of the module and abuts against the marbles on both sides.

The circuit board is provided with an NFC signal transceiver module and a capacitor, and the circuit board omits the battery; one end of the ejector rod is inserted into the rod hole at one end of the cam connection piece, one end of the cam transmission piece is inserted into the column hole at the other end of the cam connection piece, and the other end of the cam transmission piece is inserted. The annular inclined surface of the outer diameter of the cylinder at one end and the arc-shaped inclined surface of the column hole of the cam connector, one end of the third spring of the outer diameter of the ejector rod abuts against the limiting rib of the outer diameter of the upper part of the ejector rod, and the other end of the third spring abuts against the inside of the module Bottom of spring slot. Therefore, the electronic padlock triggers power supply for the NFC signal transceiver module through the capacitor, and the circuit board is usually in a power-off state, that is, the electronic padlock adopts passive technology to realize unlocking and locking.

The movable end of the lock hook is provided with a first magnet on the inner side and the outer side of the movable groove, and the circuit board is provided with a first Hall element. When the movable end of the lock hook is inserted into the lock shell, the first magnet of the lock hook is connected to the circuit board. The first Hall component is aligned to trigger.

A second magnet is arranged in one side hole of the cam transmission member, and the circuit board is provided with a second Hall element. When the movable end of the lock hook is inserted into the lock shell, the second magnet of the cam transmission member and the circuit board are connected. The second Hall element is aligned and triggered. Therefore, the position of the electronic padlock can be further refined through the arrangement of two Hall components, the first Hall component and the second Hall component.

The lock case includes an inner lock case and an outer lock case, and the pinballs and the second spring are arranged in pinball grooves symmetrically arranged on both sides of the top of the inner lock case. Therefore, it is convenient for the pinball and the second spring to be fixedly arranged in the lock case composed of the inner lock case and the outer lock case, which further facilitates the production and assembly of the electronic padlock.

The top slot of the pin slot on the inner lock shell of the lock shell is provided with an inner top cover that is sealed and fixed to the inner lock shell by screws, and the round end of the pin is inserted into the inner lock shell through the baffle plate in the pin slot, and is connected with the protruding pin. The semicircular grooves on both sides of the ejector rod of the fixed seat in the module are in contact with each other, the ejector rod is T-shaped, and the outer diameter of the ball at the bottom of the baffle plate in the ball groove of the inner lock shell is provided with a second sealing ring. The above structure further improves the stability of the marble, as well as the airtightness and waterproofness of the marble.

One side of the middle bottom cover of the inner lock shell of the lock shell is provided with an opening in a U-shape, and two sides of the inner lock shell opening are symmetrically provided with protruding limit ribs, and the sliding grooves on both sides of the module are inserted and fixed on the inner lock shell. Limit bars. The above structure facilitates the assembly, production and fixed installation between the lock shell and the module.

A dust cover is arranged above the movable groove inside the movable end of the lock hook, and the dust cover is integrated with the lock hook. Therefore, the dustproof, sealing and waterproofing of the movable end side of the lock hook is facilitated.

A first spring is arranged in the bottom hook hole of the fixed end of the lock hook in the lock shell, and the lock shell is connected to the bottom cover at the bottom through the screws in the hook holes on both sides of the fixed end and the movable end of the lock hook, and the inner side of the movable end of the lock hook A side groove is arranged on the outer side below the movable groove, and the pin is inserted through the lock shell and is located in the side groove of the lock hook. Therefore, when the electronic padlock is unlocked, the fixed end of the lock hook is ejected through the first spring, and the entire electronic padlock is sealed and waterproof.

After the pin and the second spring in the lock case are installed in the lock case, the module is put into the lock case, the lock case is first fixed to the bottom cover by the screws in the hook holes on both sides of the fixed end and the movable end of the lock hook, and then the lock case is fixed to the bottom cover. After a spring and a lock hook are put into the lock case, the fixed end of the lock hook is fixed in the lock case by inserting a pin on the fixed end side of the lock hook into the lock case. In the side groove of the lock case, the pin hole of the lock shell is provided with a plug. The above are the specific assembly steps of the electronic padlock, thereby improving the sealing performance and waterproofness of the electronic padlock and preventing breaking and opening.

The invention has reasonable structural design, convenient production and assembly, good accuracy, sealing and stability, and low energy consumption. In particular, the power supply of the motor can be started through the capacitor, and the motor only needs to drive the cam connecting part to rotate through the cam transmission part. , the motor consumes less energy; it is suitable for use as a self-recovery waterproof NFC electronic padlock, and further improvement of similar products.

Description of drawings

FIG. 1 is a schematic diagram of a part of the structure of the present invention.

FIG. 2 is a schematic cross-sectional structure diagram of the present invention.

FIG. 3 is a schematic diagram of the internal structure of the locked state of FIG. 2 .

FIG. 4 is a schematic diagram of the internal structure of the unlocked state of FIG. 3 .

FIG. 5 is a schematic diagram of the internal structure of the present invention, and the outer lock case of the lock case is omitted in the figure.

FIG. 6 is a schematic diagram of the exploded structure of FIG. 5 , and the framed part in the figure is a schematic diagram of the structure of the other side of the cam connector.

Serial number and name of the drawings: 1, lock hook, 101, dust jacket, 102, side groove, 2, lock shell, 201, inner lock shell, 202, outer lock shell, 203, inner top cover, 3, module, 301 , fixing seat, 4, first sealing ring, 5, bottom cover, 6, motor, 7, cam drive, 8, cam connecting piece, 9, first spring, 10, ejector rod, 11, marble, 12, first Second spring, 13, Baffle plate, 14, Second sealing ring, 15, Third spring, 16, First magnet, 17, First Hall component, 18, Circuit board, 19, Screw, 20, Pin, 21 , Plug, 22, the first capacitor, 23, the second capacitor, 24, the second magnet.

Detailed ways

The structure and use of the present invention will now be further described with reference to the accompanying drawings. As shown in Figures 1-6, the lock hook 1 of the electronic padlock is U-shaped, one end of the lock hook is a fixed end, the other end of the lock hook is a movable end, and the fixed end of the lock hook is inserted through the top of the lock shell 2 and fixed Inside the lock case, the movable end of the lock hook pops out of the lock case and is unlocked by rotating the fixed end. The module 3 is fixed in the lock case through the bottom cover 5 and the first sealing ring 4 at the bottom of the lock case. One end of the ejector rod 10 protruding from the top of the module is in contact with the marbles 11 on both sides of the lock case, and a circuit board 18 is arranged in the module. And the motor 6, the circuit board is provided with a capacitor and an NFC signal transceiver module, the capacitor includes a first capacitor 22 and a second capacitor 23, and the circuit board is connected to the motor through a line. One end of the marble is respectively provided with a semi-circular hemispherical head, the other end of the cylinder at the bottom of the hemispherical head of the marble is respectively provided with a rounded end, and the hemispherical head at one end of the marble is respectively pressed against the inner fixing groove of the fixed end of the lock hook through the second spring 12. , and the movable groove on the inner side of the movable end of the lock hook, and the round end of the other end of the pin at the same time abuts against the semicircular grooves symmetrically arranged on both sides of one end of the ejector rod 10; The outer diameter of the other end of the rod is provided with a third spring 15. The top rod is connected to one end of the cam connector 8 in an L-shape, and the other end of the cam connector is provided with a lower slope arranged obliquely. A motor is provided, and the motor shaft of the motor is provided with a cam transmission member 7, and the upper inclined surface of one end of the cam transmission member is fitted with the lower inclined surface of the cam connecting member. That is, one end of the ejector rod is inserted into the rod hole at one end of the cam connecting piece, one end of the cam transmission piece is inserted into the column hole at the other end of the cam connecting piece, and the annular inclined surface of the cylindrical outer diameter of the other end of the cam driving piece is arc-shaped at the column hole of the cam connecting piece. Inclined surface, one end of the third spring of the outer diameter of the ejector rod abuts against the limiting rib of the upper outer diameter of the ejector rod, the other end of the third spring abuts against the bottom of the spring groove in the module, and the second magnet 24 is arranged on the annular inclined surface of the cam transmission member In the hole slot on the lower side, the motor shaft of the motor is inserted into the cross hole of the cam transmission part through the cross head. The movable end of the lock hook is provided with a first magnet 16 on the inner side and the outer side of the movable groove, and the circuit board is provided with a first Hall element 17 and a second Hall element. When the movable end of the lock hook is inserted into the lock shell, the lock hook The first magnet of the circuit board is aligned with the first Hall component of the circuit board to trigger, the circuit board of the second Hall component is not drawn, and the locked state is further improved by the first Hall component and the second Hall component. Precision in place. The second magnet of the cam transmission part is aligned with the second Hall element of the circuit board to trigger.

The lock case described above includes an inner lock case 201 and an outer lock case 202, and the pins and the second spring are arranged in pin slots symmetrically arranged on both sides of the top of the inner lock case. The top slot of the pin slot on the inner lock shell of the lock shell is provided with an inner top cover 203 which is sealed and fixed to the inner lock shell by screws. The semicircular grooves on both sides of the top rod of the fixed seat in the module are in contact with each other, and the top rod is T-shaped. The outer diameter of the ball at the bottom of the baffle plate in the ball groove of the inner lock shell is provided with a second sealing ring 14, and the two sides of the fixed seat are respectively provided with inner covers. plate. One side of the middle bottom cover 5 of the inner lock shell of the lock shell is provided with an opening in a U-shape, and two sides of the inner lock shell opening are symmetrically provided with raised limit ribs. Bit tendon. A dust cover 101 is arranged above the movable groove on the inner side of the movable end of the lock hook, and the dust cover is connected with the lock hook as a whole. A first spring 9 is arranged in the bottom hook hole of the fixed end of the lock hook in the lock shell. The lock shell is connected to the bottom cover through the screws 19 in the hook holes on both sides of the fixed end of the lock hook and the movable end. The inner side of the movable end of the lock hook A side groove 102 is provided on the lower and outer side of the movable groove, and the pin 20 is inserted through the lock shell and is located in the side groove of the lock hook. After the pin and the second spring in the lock case are installed in the lock case, the module is put into the lock case, and the lock case is first fixed to the bottom cover by the screws in the hook holes on both sides of the fixed end and the movable end of the lock hook, and then the first After the spring and the lock hook are put into the lock shell, the fixed end of the lock hook is fixed in the lock shell by inserting the pin of the lock shell from the fixed end side of the lock hook. In the side groove, the pin hole of the lock shell is provided with a plug 21, and the outer side of the bottom of the upper hook hole at the screw in the lock shell is respectively provided with a ventilation hole.

The electronic padlock adopts the structure of non-power-driven marbles, as follows: in the locked state, the cam transmission part stops moving and senses the second Hall element, the lock hook is pressed vertically in place, and the marbles on both sides are under the action of the second spring. Insert the lock hook into the locking position, and then the ejector rod reaches the cut surface of the marble under the action of the third spring, and the first Hall element is sensed at this time. In the unlocked state, the cam transmission member rotates and drives the cam connecting member and the ejector rod to move vertically downward. When the ejector rod is separated from the cut surface of the marble, under the action of the first spring, the lock hook unlocks in place and pushes the marble back to achieve unlocking. That is, the self-recovery of the above-mentioned electronic padlock means that the lock hook and the two marbles are locked by the elastic force of the second spring respectively, without the driving force of the motor, and the two marbles are automatically reset and locked by the second spring respectively. The pin can be unlocked by moving the ejector rod upwards; the steel balls in the existing similar products are generally driven by the motor to drive the cam and the rotating shaft structure to realize the toggle reset, so the electronic padlock consumes less energy than the existing similar products, and only needs to The capacitor power supply can be started through NFC technology.

To sum up, the electronic padlock is an intelligent industrial NFC padlock. The electronic padlock adopts a modular design, the transmission mechanism is installed independently, the maintenance is convenient, and the assembly is simple. Inside. The electronic padlock adopts a novel transmission structure and adopts NFC short-range wireless communication technology. Due to the limited energy storage of capacitors, in order to reduce energy consumption, this mechanism uses an end-face cam structure. The motor only needs to rotate in one direction, and there is no need for multi-point detection. , thereby reducing energy consumption. Compared with the steel ball structure of the existing similar products, the pinball structure of the electronic padlock is protected by a sealing ring on the mating surface of the pinball structure and the lock body, which solves the waterproof and dustproof problems.

Claims (10)

1. A self-recovery waterproof NFC electronic padlock, the lock hook (1) of the electronic padlock is U-shaped, one end of the lock hook is a fixed end, the other end of the lock hook is a movable end, and the fixed end of the lock hook passes through the lock shell. The top of (2) is inserted and fixed in the lock case, and the movable end of the lock hook pops out of the lock case and is unlocked by rotating the fixed end; the module (3) passes through the bottom cover (5) and the first sealing ring (4) at the bottom of the lock case. It is fixed in the lock shell, and one end of the ejector rod (10) protruding from the top of the module is in contact with the marbles (11) on both sides of the lock shell respectively. The module is provided with a circuit board (18) and a motor (6), and the circuit board is provided with The battery and the circuit board are connected to the motor through a circuit; it is characterized in that one end of the marble (11) is respectively provided with a semi-circular hemispherical head, the other end of the cylinder at the bottom of the hemispherical head of the marble is respectively provided with a rounded end, and one end of the marble is provided with a hemispherical head. The head is respectively pressed against the inner fixed groove of the fixed end of the lock hook (1) through the second spring (12), and the inner movable groove of the movable end of the lock hook. The semicircular grooves symmetrically arranged on both sides are in contact with each other; the outer diameter of the other end of the ejector rod in the module (3) is provided with a third spring (15). The other end of the part is provided with a lower inclined surface arranged obliquely, a motor (6) is provided on one side of the ejector rod in the module, a cam transmission part (7) is provided on the motor shaft of the motor, and the upper inclined surface of one end of the cam transmission part is connected with the cam Fits the lower bevel of the piece. 2. The self-recovery waterproof NFC electronic padlock according to claim 1, characterized in that the circuit board (18) is provided with an NFC signal transceiver module and a capacitor, and the circuit board omits a battery; one end of the ejector rod (10) is inserted into the cam The rod hole at one end of the connecting piece (8), one end of the cam drive piece (7) is inserted into the column hole at the other end of the cam connecting piece, the annular slope of the cylindrical outer diameter at the other end of the cam drive piece and the arc-shaped slope at the column hole of the cam connecting piece One end of the third spring (15) of the outer diameter of the ejector rod abuts against the limiting rib of the upper outer diameter of the ejector rod, and the other end of the third spring abuts against the bottom of the spring groove in the module. 3. The self-recovery waterproof NFC electronic padlock according to claim 1, characterized in that a first magnet (16) is provided on the outer side of the movable groove inside the movable end of the lock hook (1), and the circuit board (18) A first Hall element (17) is provided, and when the movable end of the lock hook is inserted into the lock housing (2), the first magnet of the lock hook is aligned with the first Hall element of the circuit board and triggered. 4. The self-recovery waterproof NFC electronic padlock according to claim 1, characterized in that a second magnet (24) is provided in one side hole of the cam transmission member (7), and the circuit board (18) is provided with a second magnet (24). For the second Hall element, when the movable end of the lock hook is inserted into the lock housing (2), the second magnet of the cam transmission part is aligned with the second Hall element of the circuit board and triggered. 5. The self-recovery waterproof NFC electronic padlock according to claim 1, characterized in that the lock case (2) comprises an inner lock case (201) and an outer lock case (202), a pin (11) and a second spring (12) It is arranged in the marble grooves symmetrically arranged on both sides of the top of the inner lock shell. 6. The self-recovery waterproof NFC electronic padlock according to claim 5, characterized in that the inner lock case (201) of the lock case (2) is provided with a notch at the top of the pin slot on the inner lock case (2), which is sealed and fixed to the inner lock case by screws. The inner top cover (203), the round end of the pin (11) is inserted into the inner lock shell through the baffle plate (13) in the pin slot, and is connected with the ejector rod (10) extending out of the inner fixing seat (301) of the module (3). ) on both sides of the semicircular grooves are in contact with each other, the top rod is T-shaped, and a second sealing ring (14) is provided on the outer diameter of the ball at the bottom of the baffle plate in the ball groove of the inner lock shell. 7. The self-recovery waterproof NFC electronic padlock according to claim 5, wherein the inner lock shell (201) of the lock shell (2) is provided with a U-shaped opening on one side of the middle bottom cover (5). Protruding limit ribs are symmetrically arranged on both sides of the opening of the lock shell, and the chute on both sides of the module (3) is inserted into the limit ribs fixed on the inner lock shell. 8. The self-recovery waterproof NFC electronic padlock according to claim 1, characterized in that a dust cover (101) is provided above the movable groove on the inner side of the movable end of the lock hook (1), and the dust cover is connected to the lock hook. connected as one. 9. The self-recovery waterproof NFC electronic padlock according to claim 1, characterized in that a first spring (9) is provided in the bottom hook hole of the fixed end of the lock hook (1) in the lock shell (2), and the lock The shell is connected to the bottom cover (5) at the bottom through the screws (19) in the hook holes on both sides of the fixed end and the movable end of the lock hook. The inner side of the movable end of the lock hook is provided with a side groove (102) on the outer side below the movable groove, and the pin ( 20) Insert through the lock shell and locate in the side groove of the lock hook. 10. The self-recovery waterproof NFC electronic padlock according to claim 9, characterized in that after the pin (11) and the second spring (12) in the lock case (2) are installed in the lock case, the module (3) is placed in the lock case. into the lock case, the lock case is firstly fixed to the bottom cover (5) by the screws (19) in the hook holes on both sides of the fixed end and the movable end of the lock hook (1), and then the first spring (9) and the lock hook are placed on the bottom cover (5). After inserting into the lock case, insert the pin (20) of the lock case through the side of the fixed end of the lock hook to fix the fixed end of the lock hook in the lock case. In (102), the pin hole of the lock housing is provided with a plug (21).

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