CN112324253A

CN112324253A - Fingerprint lock cylinder assembly

Info

Publication number: CN112324253A
Application number: CN202011004863.8A
Authority: CN
Inventors: 罗治忠
Original assignee: Microarray Microelectronics Corp ltd
Current assignee: Microarray Microelectronics Corp ltd
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2021-02-05

Abstract

The invention relates to a fingerprint lock core assembly, comprising: a mechanical lock cylinder comprising a first latch driver; the fingerprint lock cylinder comprises a power supply module, a circuit board module, a fingerprint sensor module and a motor module, and an output shaft of the motor is connected with a second bolt driver; the first bolt driver comprises a first bolt driving part and a second bolt driving part which can synchronously rotate; the second bolt driver comprises a third bolt driving part and a fourth bolt driving part which can synchronously rotate; the second spring bolt driving part and the fourth spring bolt driving part are abutted against one end in respective accommodating grooves, the spring bolt driver is provided with a spring bolt driving part which is accommodated in the accommodating grooves on the first spring bolt and the second spring bolt, and the accommodating grooves reserve empty stroke spaces; when the lock is unlocked, the first lock tongue driver and the second lock tongue driver drive the first lock tongue and the second lock tongue to move towards opposite directions.

Description

Fingerprint lock cylinder assembly

Technical Field

The invention belongs to the field of locks, and particularly relates to an improvement on an electronic structure of a fingerprint lock.

Background

In the existing scheme, because the intelligent fingerprint U-shaped lock, the glass lock, the padlock and the traffic lock have different appearances, the PCBA and the mechanical control of the electronic part are required to be researched and developed again for different appearances. And each product needs to be matched by opening the die again, the development period time is long, and whether the product meets the product market positioning and expectation after being designed is uncertain. The die sinking cost itself is high and requires a higher die sinking cost if a design change is involved. Various reliability tests also increase the product development cycle. Therefore, the fingerprint lock cylinder with a universal structure is needed in the market, the burden of designing the fingerprint lock cylinder by the lock is eliminated, and the lock designing enterprises only need to put development resources in the appearance design of the lock and the improvement of the mechanical lock cylinder, so that the development resources are saved.

Disclosure of Invention

The present invention provides a fingerprint lock core assembly for solving the above technical problems, comprising:

a mechanical lock cylinder having a drive shaft including a first latch driver;

the fingerprint lock cylinder comprises a power supply module, a circuit board module, a fingerprint sensor module and a motor module, and an output shaft of the motor is connected with a second bolt driver;

the first bolt driver comprises a first bolt driving part and a second bolt driving part which can synchronously rotate;

the second bolt driver comprises a third bolt driving part and a fourth bolt driving part which can synchronously rotate;

the first bolt is provided with two accommodating grooves for accommodating the first bolt driving part and the third bolt driving part respectively;

the second bolt is provided with two accommodating grooves for accommodating the second bolt driving part and the fourth bolt driving part;

the first bolt driving part and the third bolt driving part are abutted against one end in the respective accommodating grooves, and empty stroke spaces are reserved between the first bolt driving part and the accommodating grooves and between the third bolt driving part and the accommodating grooves;

the second spring bolt driving part and the fourth spring bolt driving part are abutted against one end in each accommodating groove, and empty stroke spaces are reserved between the second spring bolt driving part and the accommodating grooves and between the fourth spring bolt driving part and the accommodating grooves;

the first lock bolt driving part or the third lock bolt driving part drives the first lock bolt to move towards a first direction, and meanwhile, the second lock bolt driving part or the fourth lock bolt driving part drives the second lock bolt to move towards a direction opposite to the first direction.

The first bolt driver or the second bolt driver can respectively and independently drive the first bolt and the second bolt. The mechanical lock cylinder and the fingerprint lock cylinder are respectively designed into independent modules, and lock manufacturers only need to integrate the developed mechanical lock cylinder and the developed fingerprint lock cylinder when developing locks. Because the fingerprint lock core is by the modularization, consequently the position structure that relates to the fingerprint lock core on the grinding apparatus is fixed, and modification machinery lock core structural design can not influence the structural design of fingerprint lock core.

As a further improvement of an embodiment of the present invention, the first tongue driver includes a cylindrical table, and the first tongue driving portion and the second tongue driving portion are provided on the cylindrical table at positions symmetrical with respect to an axial center of the cylindrical table.

As a further improvement of the embodiment of the present invention, the two receiving grooves on the first latch tongue are distributed back and forth along the first direction; the two accommodating grooves on the second bolt are distributed along the second direction in the front-back direction. As a further improvement of the embodiment of the present invention, the first lock tongue and the second lock tongue each include a cylindrical structure and a semi-cylindrical structure, the receiving grooves of the first lock tongue and the second lock tongue are disposed in the respective semi-cylindrical structures, and the semi-cylindrical structures of the first lock tongue and the second lock tongue are overlapped in a mutually slidable manner to form the cylindrical structure.

As a further improvement of the embodiment of the present invention, an elastic reset piece is disposed between the end surfaces of the cylindrical structure of the first lock tongue and the semi-cylindrical structure of the second lock tongue, which are close to each other, and the elastic reset piece keeps the trend that the first lock tongue and the second lock tongue are away from each other.

As a further improvement of an embodiment of the present invention, the circuit board module includes a first circuit board, a second circuit board, and a third circuit board; the first circuit board and the third circuit board are arranged in parallel; the second circuit board is vertical to the first circuit board and the third circuit board; the second circuit board mechanically connects the first circuit board and the third circuit board, while the second circuit board electrically connects the first circuit board and the third circuit board.

As a further improvement of an embodiment of the present invention, the second circuit board has a T-shaped structure; the third circuit board is provided with an elastic bayonet, and the inner diameter of the elastic bayonet is larger than the opening; the smaller end of the second circuit board is clamped into the elastic bayonet.

As a further improvement of an embodiment of the present invention, a charging interface component is disposed on the second circuit board.

As a further improvement of an embodiment of the present invention, the motor module is fixed on the first circuit board; the motor module comprises a motor and a speed reducer connected with an output shaft of the motor, and the output shaft of the speed reducer is connected with a second bolt driver.

Besides the fingerprint lock, the invention also provides a U-shaped lock, which comprises: the U-shaped lock rod, the lock body and the fingerprint lock cylinder assembly; the lock body comprises a shell, and the shell provides sliding guide grooves of the first bolt and the second bolt; and the first lock tongue and the second lock tongue are inserted into the grooves on two sides of the U-shaped lock rod when extending out.

Compared with the prior art, the invention has the following advantages:

1. aiming at the modular design of the intelligent lock, the production and design processes are simplified

2. Through this intelligence lock core module, guaranteed the uniformity of product, stability.

3. The modularized solution is put forward and realized for the first time in the industry

4. The modular electronic waterproof design solves the design pain of industrial waterproof locks.

Drawings

Fig. 1 is a schematic perspective view of a U-shaped lock.

Fig. 2 is a schematic perspective view of the internal structure of the U-shaped lock.

Fig. 3 is a schematic perspective view of the first lock tongue.

Fig. 4 is a schematic perspective view of a second deadbolt actuator.

Fig. 5 is a schematic perspective view of a circuit board module.

Fig. 6 is an exploded view of a circuit board module.

Fig. 7 is a schematic perspective view of the first circuit board.

Fig. 8 is a schematic perspective view of a second circuit board.

Fig. 9 is a schematic perspective view of a third circuit board.

Detailed Description

The following detailed description of the present application will be provided in conjunction with the accompanying drawings to assist those skilled in the art in understanding the present application.

Fig. 1 is a perspective view of a U-lock 100. The U-lock 100 is merely illustrative of the technical solution and a person skilled in the art will know that glass locks, padlocks, traffic locks may be included in addition to the U-lock shown in fig. 1.

The U-lock 100 includes a U-lock bar 102 and a lock body 200. A plurality of grooves 104 for receiving the locking tongues are provided along both sides of the U-shaped locking bar 102. The lock bolts in the lock body 200 respectively extend out of holes (not shown in the figure) on the left side and the right side of the lock body, when the lock bolts on the left side and the right side are inserted into the grooves, the lock body is locked with the U-shaped lock rod 102, and the lock body 200 is locked with the grooves 104 on different positions to adjust the length of the lock rod 102.

The lock body 200 includes a housing. The housing provides the sliding guide groove for accommodating the first and

second latch bolts

300 and 400, the first and

second latch bolts

300 and 400; the first and

second lock tongues

300 and 400 are inserted into the grooves 104 on both sides of the U-shaped lock bar when they are extended. The bottom of the housing 200 includes a plurality of openings (not shown), including a key hole for receiving and releasing a lock cylinder, an opening for a fingerprint sensor, and an opening for a charging interface.

Referring to the internal structure of the fingerprint lock cylinder assembly 200 shown in fig. 2, the lock bar 102 and lock body housing 200 structure of the U-lock of fig. 1 are omitted and the internal structure is in an assembled state.

The internal structure of the fingerprint lock cylinder assembly comprises a mechanical lock cylinder 206 and a fingerprint lock cylinder 500, wherein the mechanical lock cylinder 206 and the fingerprint lock cylinder 500 are two independent modules, and the mechanical lock cylinder 206 and the fingerprint lock cylinder 500 drive the first lock tongue 300 and the second lock tongue 400 through a lock tongue driver 204. The first latch bolt 300 and the second latch bolt 400 can be driven by the mechanical lock cylinder 206 and the fingerprint lock cylinder 500 independently under normal conditions, and when driven by the mechanical lock cylinder 206 or the fingerprint lock cylinder 500, the first latch bolt 300 and the second latch bolt 400 are disengaged from the groove 104 on the U-shaped lock bar 102 when driven by the mechanical lock cylinder 206 or the fingerprint lock cylinder 500.

Further, the internal structure of the mechanical lock cylinder 206 is known to those skilled in the art. For example, the lock cylinder is a pin tumbler lock cylinder, the pin tumbler lock cylinder comprises a pin tumbler and a spring, and after a key is inserted, the pin tumbler lock cylinder is aligned to enable the key to drive the lock cylinder to rotate. It is apparent that the described lock cylinder arrangement can also be an improvement of the prior art.

The mechanical lock cylinder is provided with a drive shaft 204 at the tail end thereof for driving the first bolt and the second bolt, a bolt driver 204 is arranged on the drive shaft, the bolt driver 204 comprises a cylindrical table 201, and a first bolt driving part 202 and a second bolt driving part 208 are arranged on the cylindrical table 201. The first bolt driving part 202 and the second bolt driving part 208, and the first bolt driving part 202 and the second bolt driving part 208 are cylindrical rods extending upwards from the cylindrical table 201. It is obvious that the shape and structure of the first and

second driving tongue

202 and 208 can be adapted by those skilled in the art according to the requirement.

The first bolt driving part 202 and the second bolt driving part 208 are arranged at positions symmetrical about the axis of the cylindrical table, that is, on the same diameter line of the surface of the cylindrical table 201. When a key is inserted into the lock cylinder and screwed, the cylinder table 201 rotates to drive the first bolt driving part 202 and the second bolt driving part 208 to rotate. The first bolt driving part 202 and the second bolt driving part 208 rotate in opposite directions, that is, the first bolt driving part 202 and the second bolt driving part 208 can drive the first bolt 300 and the second bolt 400 to move in opposite directions, so that the first bolt 300 and the second bolt 400 are disengaged from the groove 104 of the U-shaped lock and unlocked.

Referring to fig. 3, a perspective view of a first latch tongue is shown, which illustrates a preferred embodiment.

The first stereoscopic locking bolt 300 is formed by integrally molding a cylindrical structure 308 and a semi-cylindrical structure 310. The length of the semi-cylindrical structure 310 is approximately three times the length of the cylindrical structure. The semi-cylinder structure is provided with a first groove structure 302 for accommodating the first bolt driving part 202, and the semi-cylinder structure is further provided with a second groove structure 304 for accommodating the third bolt driving part.

Referring to fig. 4, a perspective view 400 of the second latch bolt is shown, which shows a structure of cooperating with the first latch bolt.

The second latch tongue 400 is similar to the first latch tongue 300 in structure and includes a semi-cylindrical structure 410 and a cylindrical structure 408, and the semi-cylindrical structures of the first latch tongue 300 and the second latch tongue 410 are slidably overlapped with each other to form a cylindrical structure. The semi-cylindrical structure 410 has the same length as the first latch semi-cylindrical structure. And the length of the semi-cylindrical structure 410 of the second locking bolt 400 is approximately eight times the length of the cylindrical structure 408. A third groove 402 structure for receiving the second tongue actuator 208 and a fourth groove 404 structure for receiving the fourth tongue actuator are formed on the semi-cylindrical body 410.

An elastic reset piece is arranged between the end surfaces, close to each other, of the cylindrical structure 308 of the first lock tongue and the semi-cylindrical structure 408 of the second lock tongue. The end of the second latch tongue 400 semi-cylinder is provided with an elastic member fixing structure 406, the elastic member fixing structure is used for fixing a reset member with a similar elastic structure such as a coil spring, one end of the elastic reset member is abutted against the end of the second latch tongue semi-cylinder, and the other end of the elastic reset member is abutted against one end 306 of the cylinder of the first latch tongue 300. The elastic restoring member maintains a tendency of the first latch tongue 300 and the second latch tongue 400 to be separated from each other. When the lock is not unlocked, the first lock tongue 300 and the second lock tongue 400 extend outwards all the time, so that when the lock body is fixed with the U-shaped lock rod, the front ends of the

cylinders

308 and 408 of the first lock tongue 300 and the second lock tongue 400 can enter the groove 104 of the U-shaped lock rod, and the locking action is completed.

The first bolt driver 204 includes a first bolt driving portion 202 and a second bolt driving portion 208 which can rotate synchronously when the lock is unlocked by a key. The first latch bolt driving part 202 drives the first latch bolt 300 to move in a first direction a, and simultaneously the second latch bolt 400 moves in a second direction B opposite to the first direction. The first and

second latch tongues

300 and 400 are moved in opposite directions so that the front ends of the first and

second latch tongues

300 and 400 are retracted from the groove 104 of the U-shaped latch bar, thereby being unlocked.

Further, in order to improve the moving accuracy of the first lock tongue 300 and the second lock tongue 400, the two receiving

grooves

302, 304 on the first lock tongue are distributed along the first direction a; the two receiving

slots

402, 404 on the second latch tongue are distributed along the second direction B.

The second bolt driver 520 comprises a third bolt driving part 524 and a fourth bolt driving part 522 which can rotate synchronously when unlocked by a fingerprint; the third latch bolt driving part 524 drives the first latch bolt to move along the first direction a, and the fourth latch bolt driving part 522 drives the second latch bolt to move along the second direction B, so that the front ends of the first latch bolt 300 and the second latch bolt 400 are retracted from the groove 104 of the U-shaped lock rod, thereby being unlocked.

It should be noted that the first or second

latch bolt drivers

204 or 520 are not required to interfere with the first or second latch bolts. The first bolt driving part 202 and the third bolt driving part 524 abut against one end of the respective receiving groove, and the size of the respective receiving groove is larger than that of the bolt driving part, so that an empty stroke space L (refer to fig. 2) is reserved between the first bolt driving part 202 and the third bolt driving part 208 and between the receiving groove 302 and the receiving groove 304; similarly, empty travel space is reserved between the second and fourth

latch bolt actuators

208, 522 and the receiving

slots

402, 404. The space ensures that the driving part of the second bolt driver 520 does not interfere with the movement of the bolt when the first bolt driver drives the bolt to move. Likewise, the first latch bolt driving portion 202 does not interfere with the movement of the latch bolt.

Fig. 5 is a schematic perspective view of a circuit board module, in which a housing of the fingerprint lock cylinder and a mechanical lock cylinder are hidden.

A fingerprint lock cylinder includes a power module 514, a circuit board module (

reference numerals

700, 800, 900), a fingerprint sensor module (reference numerals 702, 704), and a motor module 508, the motor output shaft being connected to a second deadbolt driver 520. The power module 514 is a rechargeable battery that can be charged and discharged repeatedly, and can be a rechargeable battery such as nickel-cadmium, nickel-hydrogen, lithium ion, lead storage, lithium iron, and the like. The circuit board module is used for reading sensor data, processing fingerprint images, calculating the matching degree of the data template and the fingerprint images, and driving the electrode module to rotate according to the matching structure so as to finish unlocking action.

Referring to fig. 6, an exploded structure of the circuit board module is shown. The circuit board module includes a first circuit board 700, a second circuit board 800, and a third circuit board 900; the first circuit board 700 and the third circuit board 900 are arranged in parallel; the second circuit board 800 is perpendicular to the first circuit board 700 and the third circuit board 300; the second circuit board 800 mechanically connects the first circuit board 700 and the third circuit board 300, while the second circuit board 800 electrically connects the first circuit board 700 and the third circuit board 900.

The advantage of this connection is that the vertical space of the lock core can be fully utilized, and the volume of the circuit assembly is reduced as much as possible. The fingerprint sensor and the processor are disposed on the first circuit board 700. Preferably, the power source 514 is connected to a third circuit board 900, a charging circuit is further disposed on the third circuit board 900, and an input end of the charging circuit is connected to the charging port 802 through the second circuit board 800. The fixing pin of the motor 508 is also fixed as a power input end and electrically connected to the first circuit board 700. The motor module 508 is fixed on the first circuit board 700; the motor module 508 includes a motor 509 and a reducer 510 coupled to a motor output shaft, which is coupled to a second deadbolt actuator 520.

It is obvious that the arrangement of the various components on the circuit board described above is only an example of a typical solution, and those skilled in the art can make equivalent modifications to the various electrical components.

Referring to fig. 7, a schematic perspective view of a first circuit board is shown, wherein a wiring structure on the circuit board is omitted. The first circuit board 700 includes a fingerprint sensor 702 disposed on a first surface, and a processor (not shown) disposed on a second surface, the fingerprint sensor 702 is covered with a protective layer, a finger sensing ring 704 is disposed on an outer side of the protective layer, and a capacitor array and a driving circuit formed on a wafer are disposed at a bottom of the protective layer. The driving circuit converts the capacitance value on the capacitor array into a gray value of a gray image, thereby forming a gray fingerprint image. And the processor extracts key points according to the gray fingerprint image and matches the key points with the template to judge whether to unlock the lock.

A connection column 901 is arranged between the first circuit board 700 and the third circuit board 900, and the connection column 901 can isolate the first circuit board 700 from the third circuit board 900.

Referring to fig. 8 and 9, a perspective structure of a second circuit board 800 and a perspective structure of a third circuit board 900 are shown. The second circuit board is of a T-shaped structure; the second circuit 800 is provided with a charging interface component 802 on board. The third circuit board is provided with an elastic bayonet 902, and the inner diameter of the elastic bayonet is larger than the opening; the smaller end of the second circuit board is clamped into the elastic clamping opening 902. When assembled, the front end of the T-shaped structure snaps into the opening of the bayonet 902, which opens and resets and secures the T-shaped structure when the front end of the T-shaped structure is fully inside the bayonet 902.

By using the design of the intelligent lock cylinder assembly, the design and development progress of a new product can be accelerated. Generally, the development period of an intelligent lock needs 4-6 months, and by adopting the integrated design, the development period of a product can be shortened to 15 days, and the mass production of the product can be completed within 1 month. Meanwhile, the development cost is saved, and only a lathe or CNC is needed to produce the external lock.

By using the intelligent lock cylinder assembly, the product types and forms can be enriched rapidly without increasing too much cost, and the development of various prototype products before an industry exhibition is facilitated rapidly. The fingerprint lock cylinder assembly can be matched and integrated with a traditional mechanical lock cylinder, and subdivision and specialization of lockset development are realized.

Claims

1. A fingerprint lock cylinder assembly, comprising:

a mechanical lock cylinder having a drive shaft including a first latch driver;

2. The fingerprint lock cylinder assembly of claim 1, wherein the first tongue actuator comprises a cylindrical table, and the first tongue actuator portion and the second tongue actuator portion are disposed on the cylindrical table and are positioned symmetrically about an axis of the cylindrical table.

3. The fingerprint lock cylinder assembly of claim 1, wherein the two receiving slots of the first latch tongue are arranged in a front-to-back direction along the first direction; the two accommodating grooves on the second bolt are distributed along the second direction in the front-back direction.

4. The fingerprint lock cylinder assembly of claim 3, wherein the first lock tongue and the second lock tongue each include a cylindrical structure and a semi-cylindrical structure, the receiving grooves of the first lock tongue and the second lock tongue are disposed on the respective semi-cylindrical structures, and the semi-cylindrical structures of the first lock tongue and the second lock tongue are slidably overlapped with each other to form the cylindrical structure.

5. The fingerprint lock core assembly of claim 4, wherein an elastic reset piece is arranged between the mutually close end surfaces of the cylindrical structure of the first lock tongue and the semi-cylindrical structure of the second lock tongue, and the elastic reset piece keeps the trend that the first lock tongue and the second lock tongue are far away from each other.

6. The fingerprint lock cylinder assembly of claim 1, wherein the circuit board module includes a first circuit board, a second circuit board, and a third circuit board; the first circuit board and the third circuit board are arranged in parallel; the second circuit board is vertical to the first circuit board and the third circuit board; the second circuit board mechanically connects the first circuit board and the third circuit board, while the second circuit board electrically connects the first circuit board and the third circuit board.

7. The fingerprint lock cylinder assembly of claim 2, wherein the second circuit board is a T-shaped structure; the third circuit board is provided with an elastic bayonet, and the inner diameter of the elastic bayonet is larger than the opening; the smaller end of the second circuit board is clamped into the elastic bayonet.

8. The fingerprint lock cylinder assembly of claim 2, wherein the second circuit board is provided with a charging interface component.

9. The fingerprint lock cylinder assembly of claim 2, wherein the motor module is fixed to the first circuit board; the motor module comprises a motor and a speed reducer connected with an output shaft of the motor, and the output shaft of the speed reducer is connected with a second bolt driver.

10. A U-lock, comprising: a U-lock bar and lock body, the device comprising a fingerprint lock cylinder assembly as defined in any one of claims 1 to 9; the lock body comprises a shell, and the shell provides sliding guide grooves of the first bolt and the second bolt; and the first lock tongue and the second lock tongue are inserted into the grooves on two sides of the U-shaped lock rod when extending out.