Fingerprint lock

Abstract

The utility model belongs to the technical field of locksets, and particularly relates to a fingerprint lock which is characterized in that an unlocking mechanism for limiting a lock catch opening and closing plate is arranged in a lock shell, a key lock cylinder and a fingerprint lock cylinder which are used for controlling the unlocking mechanism are arranged in the lock shell, and the fingerprint lock cylinder comprises a fingerprint sensor and a motor. When the unlocking mechanism is opened through the key lock cylinder or the fingerprint lock cylinder, the lock catch opening and closing plate can be separated from limiting of the unlocking mechanism, the key lock cylinder and the fingerprint lock cylinder are arranged in the lock shell of the fingerprint lock, unlocking can be achieved in two different modes, the unlocking mode of the fingerprint lock cylinder is more convenient, the key lock cylinder serves as a standby unlocking mode, and the unlocking effect is better. And additional guarantee is provided for successful unlocking. The fingerprint lock is designed to comprise the lock body, the control box and the lock catch base, so that the circuit board and the battery which are used for control are independently arranged, the size of the lock body is reduced, the lock body is more convenient and attractive to install, and the purpose of preventing rainwater is achieved by arranging the control box in the trunk body of the trunk.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of lockset, specifically relates to a fingerprint lock. BACKGROUND

[0002] Many motorcycles or electric bicycles are equipped with a trunk, and the trunk usually needs to be locked for anti-theft purpose. At present, the lockset for the trunk is commonly opened by a key. This mode of opening the lock by a key is conducive to cost reduction, but it is not very convenient to use as it needs to carry the key and is prone to the situation that the lock cannot be opened due to forgetting to take the key. At present, there is also a trunk lockset that is opened by a Bluetooth mode. This mode of opening the lock by Bluetooth is prone to the situation that the Bluetooth connection is time-consuming and unstable, and the user experience is not good. SUMMARY

[0003] The utility model aims at providing a kind of fingerprint lock, to realize the convenient installation and convenient unlocking of the lockset of trunk by the fingerprint lock.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] Provide a kind of fingerprint lock, including lock body, control box and lock catch seat, the lock body includes lock shell, and lock catch opening and closing board is hinged on the lock shell, lock catch is hinged on the lock catch opening and closing board, lock catch is equipped with the hook part on the lock catch, and the hanging shaft corresponding to the hook part is equipped on the lock catch seat;Locking mechanism for limiting the lock catch opening and closing board is arranged in the lock shell, and key lock cylinder and fingerprint lock cylinder for controlling the locking mechanism are arranged in the lock shell, the fingerprint lock cylinder includes fingerprint sensor and motor, when the locking mechanism is opened by the key lock cylinder or fingerprint lock cylinder, the lock catch opening and closing board can be separated from the limiting of the locking mechanism;Circuit board and battery are arranged in the control box, and the battery and the fingerprint lock cylinder are electrically connected with the circuit board.

[0006] Preferably, the locking mechanism includes a lock sliding block and a limiting sliding block, a limiting rod portion is arranged on the limiting sliding block, a limiting hook portion is correspondingly arranged on the lock catch opening and closing board, and a pressing portion extending out of the lock shell is further arranged on the limiting sliding block;The lock sliding block and the limiting sliding block are assembled in the lock shell by a first elastic return member and a second elastic return member respectively, and the lock sliding block blocks the limiting sliding block, the lock sliding block cooperates with the key lock cylinder and the fingerprint lock cylinder, and is used for controlling the lock sliding block to remove the block of the limiting sliding block by the key lock cylinder or the fingerprint lock cylinder.

[0007] Preferably, a first actuating portion is arranged on the key lock cylinder, and a baffle portion corresponding to the first actuating portion is arranged on the lock sliding block;A second actuating portion located at the end of the lock sliding block is arranged on the motor of the fingerprint lock cylinder.

[0008] Preferably, the sliding directions of the unlocking slider and the limiting slider are horizontal and vertical, respectively. An insert plate is provided at the front end of the limiting slider, and a slot is provided on the lower side of the unlocking slider. A blocking strip is provided in the slot, and an unlocking groove corresponding to the blocking strip is provided on the insert plate.

[0009] Preferably, the lock housing is provided with a first guide position and a second guide position corresponding to the unlocking slider and the limiting slider, respectively.

[0010] Preferably, the first guide position is a horizontal guide groove, and the unlocking slider is disposed in the guide groove; the second guide position is a vertical guide rail, the limiting slider is provided with a corresponding guide groove, and a guide rod is provided on the guide rail, the limiting slider is provided with a corresponding guide hole, and the limiting slider is disposed on the guide rail.

[0011] Preferably, the limiting slider includes a limiting sub-slider and a pressing sub-slider. The pressing sub-slider is provided with a support portion for supporting the limiting sub-slider. The limiting rod portion is located at both ends of the limiting sub-slider and extends out of the lock housing. The pressing portion is located at the bottom of the pressing sub-slider.

[0012] Preferably, the lower side of the limiting hook portion on the latch opening and closing plate is a guide slope; a swing limiting groove is provided on the inner side of the rear part of the latch, and a corresponding swing limiting protrusion is provided on the latch opening and closing plate.

[0013] Preferably, the lock housing has a first mounting groove corresponding to the key lock cylinder and a second mounting groove corresponding to the fingerprint sensor. The key lock cylinder is disposed in the first mounting groove, and the fingerprint sensor is disposed in the second mounting groove. A sealing ring is provided between the fingerprint sensor and the second mounting groove. A wire hole is provided on the rear side of the lock housing.

[0014] Preferably, the circuit board includes a main control module, a charging module, a voltage regulator module, a fingerprint data communication module, a buzzer, a motor drive module, and a USB interface. The USB interface is electrically connected to the battery through the charging module. The battery is electrically connected to the main control module and the fingerprint data communication module through the voltage regulator module. The fingerprint sensor is electrically connected to the main control module through the fingerprint data communication module. The motor is electrically connected to the battery and the main control module through the motor drive module. The buzzer is electrically connected to the main control module and the battery.

[0015] Compared with existing technologies, the beneficial effects of this utility model are as follows: This fingerprint lock includes a lock body, a control box, and a latch seat. An unlocking mechanism for limiting the latch opening plate is provided in the lock housing. A key lock cylinder and a fingerprint lock cylinder for operating the unlocking mechanism are also provided in the lock housing. The fingerprint lock cylinder includes a fingerprint sensor and a motor. When the unlocking mechanism is opened using either the key lock cylinder or the fingerprint lock cylinder, the latch opening plate can disengage from the lock mechanism's limit. Because this fingerprint lock has a key lock cylinder and a fingerprint lock cylinder for operating the unlocking mechanism in the lock housing, it can be unlocked in two different ways. The fingerprint lock cylinder unlocking method is more convenient, while the key lock cylinder serves as a backup unlocking method, providing additional security for successful unlocking. By designing the fingerprint lock into three parts—the lock body, the control box, and the latch seat—the circuit board and battery, which serve as the control components, are arranged separately, reducing the size of the lock body. The installation of the lock body is more convenient and aesthetically pleasing. Furthermore, by placing the control box inside the trunk, it achieves rainproof protection. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a structural schematic diagram of an embodiment of the fingerprint lock of this utility model.

[0018] Figure 2 This is a schematic diagram of the lock body after the latch is disassembled in one embodiment of the fingerprint lock of this utility model.

[0019] Figure 3 This is a schematic diagram of the latch structure in one embodiment of the fingerprint lock of this utility model.

[0020] Figure 4 This is a schematic diagram of the internal structure of the lock body in one embodiment of the fingerprint lock of this utility model.

[0021] Figure 5 This is a schematic diagram showing the positional relationship between the unlocking slider, the limiting slider, the motor, and the key lock cylinder in one embodiment of the fingerprint lock of this utility model.

[0022] Figure 6 This is a schematic diagram of the structure of the limiting sub-slider and the pressing sub-slider of the limiting slider in one embodiment of the fingerprint lock of this utility model.

[0023] Figure 7 This is a schematic diagram of the internal structure of the lock shell in one embodiment of the fingerprint lock of this utility model.

[0024] Figure 8 for Figure 2 Enlarged view of part A.

[0025] Figure 9This is a schematic diagram of the rear structure of the lock shell in one embodiment of the fingerprint lock of this utility model.

[0026] Figure 10 This is a circuit diagram of the main control module on the circuit board in one embodiment of the fingerprint lock of this utility model.

[0027] Figure 11 This is a circuit diagram of the fingerprint data communication module on the circuit board in one embodiment of the fingerprint lock of this utility model.

[0028] Figure 12 This is a circuit diagram of the motor drive module on the circuit board in one embodiment of the fingerprint lock of this utility model.

[0029] Figure 13 This is a circuit diagram of the charging module on the circuit board in one embodiment of the fingerprint lock of this utility model.

[0030] Figure 14 This is a circuit diagram of the voltage regulator module on the circuit board in one embodiment of the fingerprint lock of this utility model.

[0031] Figure 15 This is a circuit diagram of the buzzer on the circuit board in one embodiment of the fingerprint lock of this utility model. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] In one embodiment, a fingerprint lock is provided, such as Figure 1 As shown, the fingerprint lock includes a lock body 100, a control box 200, and a latch seat 300. The fingerprint lock can be used on the trunk of a motorcycle. When in use, the lock body 100 is installed on the outside of the trunk, the control box 200 is installed on the inside of the trunk, and the latch seat 300 is installed on the trunk cover.

[0034] Among them, such as Figures 1-2As shown, the lock body 100 includes a lock shell 110, which has a rear cover. A latch opening and closing plate 120 is hinged to the lock shell 110, and a latch 130 is hinged to the latch opening and closing plate 120. The latch opening and closing plate 120 is hinged to a first hinge shaft 121 on the lock shell 110 via lugs extending forward on both sides. The latch 130 is hinged to a second hinge shaft 122 on the latch opening and closing plate 120 via the rear of the side plates on both sides. The latch opening and closing plate 120 can swing upward along the first hinge shaft 121, and drive the latch 130 to swing synchronously. The latch 130 can swing backward along the second hinge shaft 122.

[0035] like Figure 3 As shown, a hook portion 131 is provided on the latch 130. The hook portion 131 is located on the lower front side of both sides of the latch 130. A hanging shaft 310 corresponding to the hook portion 131 is provided on the latch seat 300. When the latch opening and closing plate 120 is swung downward and the latch 130 is driven to fasten onto the lock housing 110, the hook portion 131 can be hooked onto the hanging shaft 310, thereby locking the latch 130 onto the latch seat 300.

[0036] The lock housing 110 is provided with an unlocking mechanism for limiting the latch plate 120. When the latch plate 120 is limited by the unlocking mechanism, the latch plate 120 cannot swing upward, and thus the latch 130 cannot be driven to swing upward synchronously through the latch plate 120 to disengage from the hanging shaft 310, and the fingerprint lock is in the locked state. When the latch plate 120 is released by the unlocking mechanism, the latch plate 120 can swing upward, and thus the latch 130 can be driven to swing upward synchronously through the latch plate 120 to disengage from the hanging shaft 310, and the fingerprint lock is in the unlocked state.

[0037] The lock housing 110 also includes a key lock cylinder 170 and a fingerprint lock cylinder for controlling the unlocking mechanism. The fingerprint lock cylinder includes a fingerprint sensor 180 and a motor. The control box 200 contains a circuit board 210 and a battery. The circuit board 210 has control circuits corresponding to the fingerprint sensor 180 and the motor. The battery, the fingerprint sensor 180, and the motor of the fingerprint lock cylinder are electrically connected to the corresponding circuits on the circuit board 210 to realize fingerprint recognition and control the motor. The keyhole of the key lock cylinder 170 and the fingerprint sensor 180 are arranged on the rear side of the lock housing 110, and the motor is located inside the lock housing 110. The unlocking mechanism can be opened by a key that matches the key lock cylinder 170. If the fingerprint is successfully compared with the pre-recorded fingerprint by touching the fingerprint sensor 180, the motor can be controlled to open the unlocking mechanism. Therefore, there are two unlocking methods. When the unlocking mechanism is opened by the key lock cylinder 170 or the fingerprint lock cylinder, the latch plate 120 can disengage from the limit of the lock mechanism, and the lock can be opened.

[0038] This fingerprint lock incorporates a key cylinder 170 and a fingerprint cylinder within the lock housing 110 for operating the unlocking mechanism. It can be unlocked in two different ways, with the fingerprint cylinder offering greater convenience. The key cylinder 170 serves as a backup unlocking method, providing additional security for successful unlocking. By designing the fingerprint lock into three parts—the lock body 100, the control box 200, and the strike plate 300—the control circuit board and battery are arranged separately, reducing the size of the lock body 100. This makes installation more convenient and aesthetically pleasing. Furthermore, by placing the control box 200 within the trunk, it achieves rain protection.

[0039] Furthermore, in another embodiment, such as Figure 2 and Figures 4-5 As shown, the unlocking mechanism within the lock body 100 of the fingerprint lock includes an unlocking slider 140 and a limiting slider 150. The limiting slider 150 is used to limit the latch opening plate 120, and the unlocking slider 140 is used to block the limiting slider 150. When the unlocking slider 140 releases its obstruction of the limiting slider 150, the limiting slider 150 can slide, thereby releasing the limitation on the latch opening plate 120. Specifically, limiting rod portions 151 are respectively provided on both sides of the limiting slider 150, and corresponding limiting hook portions 123 are provided on the latch opening plate 120. Side holes 111 corresponding to the limiting rod portions 151 are respectively provided on both sides of the rear part of the lock shell 110. The limiting rod portions 151 extend from the side holes 111 and are engaged with the limiting hook portions 123. A pressing part 152 extending out of the lock housing 110 is also provided on the rear part of the limiting slider 150. A rear opening 112 corresponding to the pressing part 152 is provided on the rear of the lock housing 110. The pressing part 152 extends out from the rear opening 112. When the unlocking slider 140 releases its obstruction of the limiting slider 150, the pressing part 152 can be manually pressed inward to push the limiting slider 150 to slide inward, so that the limiting rod part 151 disengages from the limiting hook part 123, thereby releasing the limitation on the latch opening and closing plate 120. At this time, the latch opening and closing plate 120 can be operated to swing to drive the latch 130 to disengage from the hanging shaft 310.

[0040] like Figures 4-5As shown, the unlocking slider 140 and the limiting slider 150 are respectively assembled in the lock housing 110 via the first elastic reset member 141 and the second elastic reset member 153. Both the first elastic reset member 141 and the second elastic reset member 153 are springs. The unlocking slider 140 blocks the limiting slider 150. The unlocking slider 140 cooperates with the motor 160 of the key lock cylinder 170 and the fingerprint lock cylinder to control the unlocking slider 140 to release the obstruction of the limiting slider 150 via the key lock cylinder 170 or the fingerprint lock cylinder. The motors 160 of the key lock cylinder 170 and the fingerprint lock cylinder release the obstruction of the limit slider 150 by pushing the unlock slider 140 to move. When the motors 160 of the key lock cylinder 170 and the fingerprint lock cylinder no longer push the unlock slider 140 to move, the unlock slider 140 can be reset and continue to block the limit slider 150 under the action of the first elastic reset member 141. Similarly, if the pressing part 152 is not pressed inward, the second elastic reset member 153 can push the limit slider 150 to slide backward and return to its original position.

[0041] Furthermore, in another embodiment, such as Figures 4-5 As shown, the key lock cylinder 170 of the fingerprint lock is provided with a first actuating part 171, which is a crescent-shaped protrusion located at the inner end of the key lock cylinder 170. The unlocking slider 140 is provided with a baffle part 142 corresponding to the first actuating part 171. The key lock cylinder 170 can be rotated by the key, causing the first actuating part 171 to contact the baffle part 142, thus pushing the unlocking slider 140 to move and release its obstruction of the limiting slider 150. A second actuating part 161 is located at the end of the unlocking slider 140 at the front end of the motor 160 of the fingerprint lock cylinder. The second actuating part 161 is an eccentric rod. When the motor 160 rotates forward at a certain angle, it can contact the unlocking slider 140 to move and release its obstruction of the limiting slider 150. When the key lock cylinder 170 or the motor 160 reverses and returns to its original position, under the action of the first elastic reset member 141, the unlocking slider 140 returns to its original position and continues to obstruct the limiting slider 150.

[0042] Furthermore, in another embodiment, such as Figures 4-6 As shown, the sliding directions of the unlocking slider 140 and the limiting slider 150 in this fingerprint lock are horizontal and vertical, respectively. Here, horizontal refers to the left-right extension direction when the lock housing 110 is in a vertical state, and vertical extension direction. A plate 154 is provided at the front end of the limiting slider 150, and a slot 143 is correspondingly provided on the lower side of the unlocking slider 140. A blocking strip 144 is provided in the slot 143, such as... Figure 6The insert plate 154 has an unlocking slot 155 corresponding to the blocking strip 144. When the unlocking slider 140 is pushed to the right, the insert plate 154 is aligned with the slot 143, and the blocking strip 144 is aligned with the unlocking slot 155. At this time, the unlocking slider 140 no longer obstructs the limiting slider 150. By setting the blocking strip 144, the unlocking slider 140 needs to move an accurate distance to unlock, thus improving the security of the lock.

[0043] Furthermore, in another embodiment, such as Figures 5-6 As shown, the limiting slider 150 in this fingerprint lock includes a limiting sub-slider 156 and a pressing sub-slider 157. The limiting sub-slider 156 is located on the rear side of the pressing sub-slider 157. The pressing sub-slider 157 is provided with a support part 158 ​​for supporting the limiting sub-slider 156. The pressing part 152 is located at the bottom of the pressing sub-slider 157, and the limiting rod part 151 is located at both ends of the limiting sub-slider 156. By processing the limiting sub-slider 156 and the pressing sub-slider 157 separately, the limiting sub-slider 156 can be made of high-strength metal, and the pressing sub-slider 157 can be made of plastic with a good feel. When the limiting rod part 151 extends out of the lock shell 110, the limiting rod part 151 at the end of the metal limiting sub-slider 156 is not easily damaged, thus playing an anti-theft role.

[0044] Furthermore, in another embodiment, such as Figures 4-7 As shown, the fingerprint lock has a first guide position 113 and a second guide position 114 in the lock housing 110, corresponding to the unlocking slider 140 and the limiting slider 150, respectively. The first guide position 113 is a horizontal guide groove in which the unlocking slider 140 is disposed. The second guide position 114 consists of two vertical guide rails 114. A guide groove 158 is provided on the back of the limiting sub-slider 156 of the limiting slider 150, and a vertically outward guide rod 115 is provided on the guide rail 114. Guide holes 159 are provided on the limiting sub-slider 156 and the pressing sub-slider 157 of the limiting slider 150. The limiting slider 150 is disposed on the guide rail 114, and the guide rod 115 is located in the guide holes 159 on the limiting sub-slider 156 and the pressing sub-slider 157 of the limiting slider 150. The guide rod 115 limits the sliding distance of the limiting slider 150 and makes the limiting sub-slider 156 and the pressing sub-slider 157 more securely installed.

[0045] Furthermore, in another embodiment, such as Figure 2 and Figure 8As shown, the lower side of the limiting hook portion 123 on the latch opening and closing plate 120 of the fingerprint lock is a downward guide slope 124, and the top surface of the limiting rod portion 151 is a forward slope 151-1. In this way, when the limiting slider 150 is not blocked by the unlocking slider 140, and the latch opening and closing plate 120 is pressed down directly, the limiting rod portion 151 can be engaged with the lower side of the limiting hook portion 123 on the latch opening and closing plate 120 under the guidance of the guide slope 124 and the slope 151-1.

[0046] Combination Figure 3 As shown, a swing limiting groove 132 is provided on the inner rear part of the side plate of the latch 130, such as... Figure 8 As shown, a swing amplitude limiting protrusion 125 is provided on the latch opening and closing plate 120. When the latch 130 is hinged on the latch opening and closing plate 120, the swing amplitude limiting protrusion 125 is located in the swing amplitude limiting groove 132, thereby limiting the swing amplitude of the latch opening and closing plate 120, making it more convenient to operate.

[0047] Furthermore, in another embodiment, such as Figure 4 and Figure 7 As shown, the fingerprint lock has a first mounting groove 116 corresponding to the key lock cylinder 170 and a second mounting groove 117 corresponding to the fingerprint sensor 180 in the lock housing 110. The first mounting groove 116 is cylindrical and matches the key lock cylinder 170. The key lock cylinder 170 is disposed in the first mounting groove 116, and the fingerprint sensor 180 is disposed in the second mounting groove 117. A sealing ring is provided between the fingerprint sensor 180 and the second mounting groove 117. By setting the first mounting groove 116 and the second mounting groove 117, the installation of the key lock cylinder 170 and the fingerprint sensor 180 is relatively sealed, providing a certain degree of waterproofing. A wiring hole 118 is provided on the rear cover on the rear side of the lock housing 110, through which the wiring of the fingerprint sensor 180 and the motor 160 is connected to the control box 200.

[0048] The main functions of the circuit board of this fingerprint lock are fingerprint recognition and motor control, and it can use existing functional circuits on the market.

[0049] Furthermore, in another embodiment, such as Figures 10-15 As shown, the fingerprint lock has a main control module, a charging module, a voltage regulator module, a fingerprint data communication module, a buzzer, a motor drive module, and a USB interface on its circuit board. The USB interface is electrically connected to the battery through the charging module. The battery is electrically connected to the main control module and the fingerprint data communication module through the voltage regulator module. The fingerprint sensor is electrically connected to the main control module through the fingerprint data communication module. The motor is electrically connected to the battery and the main control module through the motor drive module. The buzzer is electrically connected to the main control module and the battery. Among these, as... Figure 10As shown, the main control module includes a main control chip, which can be a microcontroller module. The main control chip is equipped with peripheral circuits such as a clock (not shown in the figure), voltage filter, and antenna. The antenna can be used as a hardware device for developing Bluetooth functionality. Figure 11 As shown, the fingerprint data communication module includes a connector J2 for connecting to the fingerprint sensor. Multiple transient voltage suppressor diodes (TVS) are connected to the terminals of connector J2 to protect the pins. The fingerprint data communication module has an enable terminal TOUCH_EN, which controls transistor Q3. Transistor Q3 then controls a MOSFET to wake up the fingerprint sensor from its low-power sleep state. Figure 12 As shown, the motor drive module includes a driver chip U3, a pin interface P2, and a filter circuit. The Moto_INA and Moto_INB pins of the driver chip U3 are used to control the forward and reverse rotation signals of the motor, respectively. Moto_ADC is the motor drive power supply. The MOTO1 and MOTO2 pins are used to connect to the pin interface P2, and the motor is electrically connected to the pin interface P2. Figure 13 As shown, the charging module includes a charging chip U4, a charging identification circuit, and a transient suppression circuit. The charging chip U4 converts the 5V input voltage from the USB port to 4.2V to charge the battery. The charging identification circuit is electrically connected to the main control module via the USB_INPUT pin and does not perform fingerprint recognition during charging. The transient suppression circuit uses a transient suppression transistor to suppress transient high-level signals from the USB interface. Figure 14 As shown, the voltage regulator module includes a voltage regulator chip U1, which converts the battery voltage to 3.3V DC. Figure 15 As shown, the buzzer is controlled by a transistor Q1 and is used to provide prompts during lock opening, fingerprint enrollment, and other processes. The circuit board also includes standard functional circuits such as a USB interface circuit, battery level detection circuit, and indicator lights, which will not be described in detail here.

[0050] It should be noted that this fingerprint lock can be used on the trunk of motorcycles, as well as on other boxes, doors, and other similar applications.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0052] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fingerprint lock, characterized in that: The lock includes a lock body, a control box, and a latch seat. The lock body includes a lock shell with a latch opening plate hinged to it. A latch is hinged to the latch opening plate, and the latch has a hook portion. The latch seat has a hanging shaft corresponding to the hook portion. The lock shell contains an unlocking mechanism for limiting the latch opening plate, and also contains a key lock cylinder and a fingerprint lock cylinder for operating the unlocking mechanism. The fingerprint lock cylinder includes a fingerprint sensor and a motor. When the unlocking mechanism is opened by the key lock cylinder or the fingerprint lock cylinder, the latch opening plate can disengage from the limiting position of the unlocking mechanism. The control box contains a circuit board and a battery, and the battery and the fingerprint lock cylinder are electrically connected to the circuit board.

2. The fingerprint lock according to claim 1, characterized in that: The unlocking mechanism includes an unlocking slider and a limiting slider. The limiting slider has a limiting rod portion, and the latch plate has a corresponding limiting hook portion. The limiting slider also has a pressing portion extending out of the lock housing. The unlocking slider and the limiting slider are respectively assembled in the lock housing through a first elastic reset member and a second elastic reset member. The unlocking slider blocks the limiting slider. The unlocking slider cooperates with the key lock cylinder and the fingerprint lock cylinder to release the blocking of the limiting slider by controlling the unlocking slider through the key lock cylinder or the fingerprint lock cylinder.

3. The fingerprint lock according to claim 2, characterized in that: The key lock cylinder is provided with a first actuating part, and the unlocking slider is provided with a baffle part corresponding to the first actuating part; the motor of the fingerprint lock cylinder is provided with a second actuating part located at the end of the unlocking slider.

4. The fingerprint lock according to claim 2, characterized in that: The sliding directions of the unlocking slider and the limiting slider are horizontal and vertical, respectively. An insert plate is provided at the front end of the limiting slider, and a slot is provided on the lower side of the unlocking slider. A blocking strip is provided in the slot, and an unlocking groove corresponding to the blocking strip is provided on the insert plate.

5. The fingerprint lock according to claim 2, characterized in that: The lock housing is provided with a first guide position and a second guide position corresponding to the unlocking slider and the limiting slider, respectively.

6. The fingerprint lock according to claim 5, characterized in that: The first guide position is a horizontal guide groove, and the unlocking slider is disposed in the guide groove; the second guide position is a vertical guide rail, the limiting slider is provided with a corresponding guide groove, and a guide rod is provided on the guide rail, the limiting slider is provided with a corresponding guide hole, and the limiting slider is disposed on the guide rail.

7. The fingerprint lock according to claim 2, characterized in that: The limiting slider includes a limiting sub-slider and a pressing sub-slider. The pressing sub-slider is provided with a support portion for supporting the limiting sub-slider. The limiting rod portion is located at both ends of the limiting sub-slider and extends out of the lock housing. The pressing portion is located at the bottom of the pressing sub-slider.

8. The fingerprint lock according to claim 2, characterized in that: The lower side of the limiting hook portion on the latch opening and closing plate is a guide slope; a swing limiting groove is provided on the inner side of the rear part of the latch, and a corresponding swing limiting protrusion is provided on the latch opening and closing plate.

9. The fingerprint lock according to claim 3, characterized in that: The lock housing has a first mounting slot corresponding to the key lock cylinder and a second mounting slot corresponding to the fingerprint sensor. The key lock cylinder is disposed in the first mounting slot and the fingerprint sensor is disposed in the second mounting slot. A sealing ring is provided between the fingerprint sensor and the second mounting slot. A wire hole is provided on the rear side of the lock housing.

10. The fingerprint lock according to claim 1, characterized in that: The circuit board includes a main control module, a charging module, a voltage regulator module, a fingerprint data communication module, a buzzer, a motor drive module, and a USB interface. The USB interface is electrically connected to the battery through the charging module. The battery is electrically connected to the main control module and the fingerprint data communication module through the voltage regulator module. The fingerprint sensor is electrically connected to the main control module through the fingerprint data communication module. The motor is electrically connected to the battery and the main control module through the motor drive module. The buzzer is electrically connected to the main control module and the battery.

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