Breakage-proof fingerprint identification equipment for safety box

Abstract

The invention relates to the technical field of fingerprint identification equipment, and discloses breakage-proof fingerprint identification equipment for a safety box. The fingerprint identification device comprises a shell formed by splicing a front end cover and a rear end cover, and a rotating disc for bearing a fingerprint identifier is rotationally assembled in the shell. An identification window is arranged on the front end cover, a protective cover is arranged outside the identification window, and an infrared human body sensor is integrated on the top wall of the protective cover. And when the sensor detects that the stretching object is not a human body, the rotating disc immediately drives the fingerprint identifier to transfer, so that the fingerprint identifier is prevented from being damaged. And the identification window is a gradually-changed expansion opening with wide outside and narrow inside, so that fingers of the user can be smoothly contacted. The rotating disc and the shell are in non-rigid connection through the spline shaft, the sliding sleeve and the bearing, the buffering rubber ring and the buffering rubber plug are matched, double buffering protection is achieved, and impact energy is effectively absorbed. According to the invention, through physical protection, active risk avoiding and an impact buffering mechanism, the damage resistance and the use safety of the fingerprint identification equipment are remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fingerprint identification equipment, and in particular to a damage-proof fingerprint identification equipment for a safe. BACKGROUND

[0002] As a container for storing important articles, valuable documents and high-value property, the safe plays a crucial role, and its figure can be seen in places such as homes, offices, and financial institutions, etc., to escort the safety of people's property. With the continuous progress of science and technology, the fingerprint identification equipment gradually becomes the mainstream unlocking method of the safe due to its convenience and security. The fingerprint has uniqueness and non-replicability, which greatly improves the security level of the safe after the fingerprint identification technology is applied to the safe, so that the user no longer needs to worry about the problems such as password forgetting, key loss or theft, and only needs to press the finger lightly to quickly and accurately open the safe, which is simple and efficient.

[0003] Although the fingerprint identification equipment brings great convenience to the use of the safe, it cannot be ignored that in the aspect of protection, the fingerprint identification equipment of most safes on the market has obvious defects. Many fingerprint identification equipment is simply integrated on the surface of the safe, and lacks effective protection or damage-proof design, which makes them very vulnerable when facing physical damage from the outside world.

[0004] In some actual cases, the unscrupulous people use tools to violently disassemble the fingerprint identification equipment of the safe, or cause the fingerprint identification sensor to be damaged by strong impact, thereby causing the entire fingerprint identification function to fail. Once the fingerprint identification equipment cannot work normally, the safe cannot be unlocked by fingerprint. Moreover, even if the traditional fingerprint identification equipment is subjected to slight scratches and collisions, it may affect the accuracy and stability of its identification, causing the user to still fail to unlock successfully after multiple attempts, causing unnecessary trouble and time waste.

[0005] In order to effectively solve the above problems, it is particularly urgent to develop a safe fingerprint identification equipment with damage-proof function. SUMMARY

[0006] To solve the above technical problems, the present application provides a damage-proof fingerprint identification equipment for a safe.

[0007] The present application adopts the following technical solutions: a fingerprint identifier and a shell composed of a front end cover and a rear end cover for physically protecting the fingerprint identifier, a rotating disc for carrying the fingerprint identifier and enabling the fingerprint identifier to realize displacement avoidance is rotatably assembled inside the shell; The front end cover is provided with an identification window for exposing the fingerprint identifier to realize fingerprint collection, and a protective cover is fixed outside the identification window of the front end cover to form a half-shielding protection for the identification window, and the top wall of the protective cover is integrated with an infrared human body sensor for identifying whether the inserted object is a human finger; The protective cover constructs a preventive detection space outside the collection area of the fingerprint identifier, and the infrared human body sensor is used to detect the object inserted into the protective cover in real time; when the infrared human body sensor detects that the inserted object is not a human body, the rotating disc is immediately started and drives the fingerprint identifier to move from the directly corresponding position of the identification window, so as to avoid the fingerprint identifier from being damaged by external force.

[0008] As a further improvement of the above-mentioned scheme, the identification window is provided as a gradually expanding opening with an outer width and an inner width, the inner side of the tight end is directed towards the inside of the shell, and is accurately corresponding to the collection end position of the fingerprint identifier; this structure can ensure that the shell has sufficient protective thickness, while ensuring that the user's finger can smoothly insert and contact the fingerprint identifier.

[0009] As a further improvement of the above-mentioned scheme, the inner wall of the front end cover is provided with a first end shaft rotatably connected to one side of the rotating disc, and the side of the rotating disc away from the front end cover is provided with a second end shaft rotatably connected to the rear end cover; through the two end shafts, the rotating disc can be stably connected to the shell while maintaining sufficient protective thickness, thereby improving the overall impact protection capability of the shell.

[0010] As a further improvement of the above-mentioned scheme, the side of the rotating disc close to the rear end cover is rotatably sleeved with a buffer rubber ring tightly abutting the inner wall of the rear end cover, and the end of the first end shaft away from the front end cover is rotatably sleeved with a buffer rubber plug tightly abutting the inner wall of the rotating disc; when the shell is impacted by external force, the buffer rubber ring and the buffer rubber plug can synchronously absorb the impact energy, effectively buffering the impact force on the rotating disc and the fingerprint identifier, and reducing the impact damage.

[0011] As a further improvement of the above-mentioned scheme, the first end shaft and the second end shaft are both provided as spline shaft structures, and the outer periphery of both is spline-sleeved with a sliding sleeve, and the outer periphery of both sliding sleeves is interference-fitted with a bearing; through the combination of "spline shaft + sliding sleeve + bearing", a non-rigid connection is formed between the rotating disc and the shell, and a double-buffering protection structure is formed to maximize the impact buffering effect.

[0012] As a further improvement of the above-mentioned scheme, the side of the rotating disc close to the rear end cover is provided with an annular assembly groove, and a rotating ring is rotatably embedded in the annular assembly groove, and the buffer rubber ring is coaxially embedded on the rotating ring, and one side of the buffer rubber ring is tightly attached to the rear end cover.

[0013] As a further improvement of the above-mentioned scheme, the outer peripheral edge of the front end cover and the outer peripheral edge of the rear end cover are integrally formed with radially outwardly extending limiting rings, the end faces of the two limiting rings are parallel to each other and correspond to each other; by clamping the two limiting rings to the inner and outer sides of the safe door, the shell can be stably fixed on the safe door.

[0014] As a further improvement of the above-mentioned scheme, the shell is fixedly installed with a motor for driving the rotating disc to rotate on the side close to the rear end cover, a driving gear is fixedly arranged on the output shaft of the motor, a driven gear ring is arranged on the outer peripheral wall of the rotating disc and engaged with the driving gear, and the motor drives the rotating disc to rotate through the meshing transmission structure of the driving gear and the driven gear ring.

[0015] Compared with the prior art, the present application has the following advantages: The present application realizes the basic physical protection of the fingerprint identifier through the shell, and at the same time, the fingerprint identifier is carried by the rotatable rotating disc, and the double protection mechanism of "prevention detection-active risk avoidance" is constructed by cooperating the protective cover on the outer side of the front end cover and the integrated infrared human body sensor. When the infrared human body sensor detects that the object inserted into the protective cover is not a human body (such as a destructive tool), the rotating disc can immediately drive the fingerprint identifier to shift from the position corresponding to the identification window, effectively avoiding the direct destruction of the fingerprint identifier by external force; the semi-shielding design of the protective cover does not affect the normal fingerprint collection operation of the user, and can reduce the interference of external sundries and accidental collisions, significantly improving the anti-damage ability and use safety of the fingerprint identification equipment, solving the problem that the traditional fingerprint identification equipment is easily disassembled and damaged by impact due to the lack of effective protection. By arranging a rotatable buffer rubber ring between the rotating disc and the rear end cover and a rotatable buffer rubber plug between the first end shaft and the rotating disc, a double-buffering structure is formed. This structure can not only absorb external impact energy to weaken the impact on the rotating disc and the fingerprint identifier without hindering the rotation of the rotating disc and without wearing itself, but also can greatly improve the impact resistance of the equipment, cope with daily accidental collisions or slight violent impacts, ensure the structural integrity and functional stability of the fingerprint identifier, avoid identification failure, and reduce the impact damage of internal components, effectively prolong the service life of the equipment. By setting the first end shaft and the second end shaft as spline shaft structures, and by realizing spline fitting of the sleeve and the bearing, a non-rigid connection structure of "spline shaft + sleeve + bearing" is constructed. This connection mode not only ensures the stability of the rotating cooperation between the rotating disc and the shell, but also forms a double-buffer protection system in cooperation with the buffer rubber ring and the buffer rubber plug: the cooperation of the spline shaft and the sleeve can allow the rotating disc to have a slight axial movement within a certain range, further dispersing the impact energy, and the bearing can reduce the rotating friction, ensuring the response speed and smoothness of the rotating disc when avoiding danger or resetting. The design of the double-buffer protection structure maximizes the impact buffering effect, so that even if the shell is subjected to strong external force impact, the fingerprint identifier can be effectively protected from damage, while ensuring the action reliability of the equipment when avoiding danger, further strengthening the anti-damage ability and use stability of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a cooperation display diagram of the anti-damage fingerprint identification equipment for the safe deposit box and the safe deposit box door of the present application; Figure 2 is a side view and sectional plane display diagram of the anti-damage fingerprint identification equipment for the safe deposit box of the present application; Figure 3 is a first disassembly display diagram of the anti-damage fingerprint identification equipment for the safe deposit box of the present application; Figure 4 is a second disassembly display diagram of the anti-damage fingerprint identification equipment for the safe deposit box of the present application; Figure 5 is a disassembly display diagram of the rotating disc and the rotating ring, the buffer rubber ring, the sleeve and the bearing; Figure 6 is a sectional display diagram of the rotating disc and the front end cover; Figure 7 is a sectional display diagram of the front end cover.

[0017] Main symbol explanation: 1, shell; 101, front end cover; 102, rear end cover; 103, identification window; 104, protective cover; 105, first end shaft; 106, buffer rubber plug; 107, limiting ring; 2, rotating disc; 201, rotating ring; 202, buffer rubber ring; 203, second end shaft; 3, fingerprint identifier; 4, infrared human body inductor; 5, motor; 6, sleeve; 7, bearing. DETAILED DESCRIPTION

[0018] In the following, the present application will be further described in combination with the drawings and specific embodiments.

[0019] In combination with Figures 1 to 7As shown, the safe anti-damage fingerprint identification device disclosed by the application is characterized in that a "physical protection + active risk avoidance + impact buffering" trinity protection system is constructed, and the specific structure comprises: an outer shell 1 composed of a front end cover 101 and a rear end cover 102 through high-strength bolt splicing, which is integrally stamped from 304 stainless steel material to provide basic physical protection for internal components.

[0020] A rotating disc 2 is rotatably installed in the outer shell 1, which is made of aviation-grade aluminum alloy material, the gap between the diameter of the rotating disc 2 and the inner diameter of the outer shell 1 is controlled to be between 0.1-0.2mm, which ensures smooth rotation while avoiding shaking, and an installation groove matched with the fingerprint identifier is arranged at the twelve o'clock position of the rotating disc 2, a 0.5mm thick silica gel buffer pad is pasted on the inner wall of the installation groove, and the fingerprint identifier 3 is fixed in the installation groove through epoxy resin glue, which not only realizes stable installation of the fingerprint identifier 3, but also reduces vibration transmission when the rotating disc 2 rotates. In addition, a threading hole is provided through the rotating disc 2 to communicate the installation groove and the second end shaft 203, a wear-resistant sleeve is arranged in the threading hole, and a wire winding space is reserved in the rotating disc 2.

[0021] An identification window 103 for exposing the fingerprint identifier 3 is arranged on the front end cover 101, which is designed as a gradually expanding opening with an outer width and an inner width, the inner tight end width is consistent with the collection end width of the fingerprint identifier 3, and the inner tight end is accurately aligned with the collection end of the fingerprint identifier 3. This structure design can guide the user's finger to smoothly extend and accurately contact the fingerprint identifier 3 while ensuring that the outer shell 1 has sufficient protection thickness, avoiding identification difficulties caused by window position deviation. The outer side of the front end cover 101 corresponding to the identification window 103 is integrally formed with a protective cover 104, which is designed in an arc shape, and the opening is directed downward (with an angle of 30° with the horizontal direction), which can realize half-shielding protection of the identification window 103, prevent dust and water stains from directly falling in, and not affect normal operation of the user. The top wall of the protective cover 104 is integrated with an infrared human body sensor 4, and the front end cover 101 and the protective cover 104 are pre-provided with an embedded channel, and the infrared human body sensor 4 is fixed through the embedded channel, and the sensing range covers the internal space of the protective cover 104, which can accurately identify whether the object extending in is a human finger.

[0022] An annular assembly groove is arranged on one side of the rotating disc 2 close to the rear end cover 102, and a rotating ring 201 is rotatably embedded in the annular assembly groove; the buffer rubber ring 202 is made of butadiene rubber material and is coaxially embedded on the rotating ring 201, one side of the buffer rubber ring 202 is tightly attached to the rear end cover 102, and when the outer shell 1 is impacted in the rear end direction, the buffer rubber ring 202 can absorb impact energy through its own deformation.

[0023] The first end shaft 105 is rotatably installed with a buffer rubber plug 106 at one end away from the front end cover 101. The buffer rubber plug 106 is made of silicone rubber and tightly abuts the inner wall of the rotating disc 2. When the shell 1 is impacted in the front end direction, the buffer rubber plug 106 can buffer the impact force between the first end shaft 105 and the rotating disc 2, reducing the impact on the fingerprint identifier 3.

[0024] The buffer rubber ring 202 and the buffer rubber plug 106 are respectively rotatably connected with the rotating disc 2 and the front end cover 101. In this way, both can buffer the rotating disc 2, and will not hinder the rotation of the rotating disc 2, and will not be worn by the rotation of the rotating disc 2.

[0025] The first end shaft 105 and the second end shaft 203 are both involute spline shaft structures, and the outer periphery spline of both is sleeved with a sliding sleeve 6, which not only ensures the transmission accuracy, but also allows the rotating disc 2 to move axially within a small range, further dispersing the impact energy.

[0026] The outer periphery of the two sliding sleeves 6 is fitted with a deep groove ball bearing 7, and the outer ring of the bearing 7 is tightly matched with the mounting hole inner wall of the rotating disc 2 and the bearing seat of the rear end cover 102.

[0027] The front end cover 101 and the rear end cover 102 are integrally formed with a limiting ring 107 at the outer periphery edge. During installation, the two limiting rings 107 are respectively attached to the inner and outer sides of the safe door, and are fixed by screw clamping.

[0028] The motor 5 is fixedly installed on the inner side of the shell 1 close to the rear end cover 102 through a support. The motor 5 is a direct current speed reduction motor, and its output shaft is fixedly connected with the driving gear. The outer peripheral wall of the rotating disc 2 is fixedly installed with a driven gear ring. The control end of the motor 5 is connected with the safe control system through wires, and the control system is built-in with a motor driving module, which can realize the forward and reverse rotation, speed regulation and overload protection (when the load of the motor 5 exceeds 1.5 times of the rated load, it is automatically powered off for protection) of the motor 5, avoiding damage of the motor 5 due to overload.

[0029] The fingerprint identification device is an independent mechanism, and the locking mechanism (such as electromagnetic lock, mechanical lock core) of the safe belongs to different components. The two only realize functional cooperation through RS485 communication protocol (the fingerprint identification device sends the verification result to the locking mechanism control system, and the control system drives the locking mechanism to open). This independent design can reduce the influence of single mechanism failure on the overall function: if the fingerprint identification device fails, it can be replaced or repaired alone without disassembling the locking mechanism; if the locking mechanism fails, the fingerprint identification device can still perform identity verification, which is convenient for troubleshooting and maintenance.

[0030] The device has a self-checking function, which automatically detects the working state of the infrared human body sensor 4, the motor 5 and the fingerprint identifier 3 after each power-on, and sends a "fault signal" to the safe control system if a component failure is detected, and displays the faulty component on the control system panel for timely maintenance. In addition, the fingerprint identifier 3 adopts a live fingerprint identification technology, which can effectively prevent fraud by fake fingerprints (such as silicone fingerprints and film fingerprints), with an identification accuracy of not less than 99.5% and a false recognition rate of not higher than 0.001%, further improving the safety of the device.

[0031] The implementation principle of the anti-damage fingerprint identification device for the safe is: The fingerprint identification device is an independent mechanism, and the locking mechanism of the safe belongs to different components. The two only realize the unlocking operation through functional cooperation, and are not integrated structures, which can reduce the influence of single mechanism failure on the overall function. When the object extends below the protective cover 104, the infrared human body sensor 4 will first identify. If the identification result is not a finger (such as a tool, a hard object, etc.), the system will send an instruction to the motor 5 to drive the rotating disc 2 to rotate. The rotating disc 2 drives the fingerprint identifier 3 to displace by rotating, so that the fingerprint identifier 3 is out of position with the identification window 103, thereby avoiding being damaged by external force; The fingerprint identifier supports a hidden mode. When the infrared human body sensor 4 identifies that the object extending in is a finger, the motor 5 will drive the rotating disc 2 to rotate, and drive the fingerprint identifier 3 to accurately shift to the identification window 103, so that the user can perform fingerprint verification; The buffer rubber ring 202 on the rotating disc 2 forms a cooperation structure with the buffer rubber plug 106 on the first end shaft 105. At the same time, the spline shaft + sliding sleeve + bearing realize non-rigid connection, so that the rotating shaft 2 can realize a certain degree of axial movement in the shell 1, further improving the buffering effect. When the shell 1 is subjected to external impact, the above-mentioned buffering structure and axial movement design can effectively absorb the impact force, and play a buffering protection role on the rotating disc 2 and the fingerprint identifier 3, reducing the impact damage.

[0032] The above-mentioned embodiments are only preferred embodiments of the present application, and cannot be used to limit the scope of protection of the present application. Any non-essential changes and replacements made by those skilled in the art on the basis of the present application all belong to the scope of protection claimed by the present application.

Claims

1. A tamper-evident fingerprint recognition device for a safe, characterized by, Include: Fingerprint identifier (3) and by the front cover (101) and rear cover (102) splicing consists of, for the fingerprint identifier (3) to form a physical protection shell (1), the shell (1) inside rotating assembly for carrying fingerprint identifier (3), and can drive fingerprint identifier (3) to realize displacement risk avoidance turntable (2); The front cover (101) is provided with an identification window (103) for exposing the fingerprint identifier (3) to realize fingerprint collection, and the outer side of the front cover (101) corresponding to the identification window (103) is further provided with a protective cover (104) for forming half shielding protection for the identification window (103), and the top wall of the protective cover (104) is integrated with an infrared human body sensor (4) for identifying whether the object inserted is a human finger; By constructing a preventive detection space outside the collection area of the fingerprint identifier (3) through the protective cover (104), the infrared human body sensor (4) is used to detect the object inserted into the protective cover (104) in real time; When the infrared human body sensor (4) detects that the inserted object is not a human body, the turntable (2) is immediately started and drives the fingerprint identifier (3) to shift from the directly corresponding position of the identification window (103), so as to avoid the fingerprint identifier (3) from being damaged by external force.

2. The tamper-evidencing fingerprint identification device for a safe of claim 1, wherein, The identification window (103) is provided as a gradually expanding opening with an outer width and an inner width, the inner side of which is tightened towards the inside of the shell (1) and accurately corresponds to the collection end position of the fingerprint identifier (3); While ensuring that the shell (1) has sufficient protective thickness, it can ensure that the user's finger can smoothly insert and contact the fingerprint identifier (3).

3. The tamper-evidencing fingerprint identification device for a safe of claim 1, wherein, The inner wall of the front cover (101) is provided with a first end shaft (105) rotatably connected to one side of the turntable (2), and the side of the turntable (2) away from the front cover (101) is provided with a second end shaft (203) rotatably connected to the rear cover (102); Through the two-end shaft split rotary connection structure, the stable rotary connection of the shell (1) and the turntable (2) can be realized while ensuring that the front cover (101) maintains sufficient protective thickness, thereby improving the overall impact protection capability of the shell (1).

4. The tamper-evidencing fingerprint identification device for a safe of claim 3, wherein, The side of the turntable (2) close to the rear cover (102) is rotatably provided with a buffer rubber ring (202) tightly abutting the inner wall of the rear cover (102), and the end of the first end shaft (105) away from the front cover (101) is rotatably provided with a buffer rubber plug (106) tightly abutting the inner wall of the turntable (2); When the shell (1) is impacted by external force, the buffer rubber ring (202) and the buffer rubber plug (106) can synchronously absorb impact energy, effectively buffering the impact force suffered by the turntable (2) and the fingerprint identifier (3), and reducing impact damage.

5. The tamper-evidencing fingerprint identification device for a safe of claim 4, wherein, The first end shaft (105) and the second end shaft (203) are both provided as spline shaft structures, and the outer periphery of both is spline fitted with a sliding sleeve (6), and the outer periphery of the two sliding sleeves (6) is interference fitted with a bearing (7); Through the combined structure of "spline shaft + sliding sleeve (6) + bearing (7)", the non-rigid connection is formed between the rotating disc (2) and the shell (1), and then the double buffering protection structure is formed by cooperating with the buffer rubber ring (202) and the buffer rubber plug (106), so that the impact buffering effect is maximized.

6. The tamper-proof fingerprint identification device for a safe according to claim 4, wherein The rotating ring (201) is rotatably embedded on one side of the rotating disc (2) close to the rear end cover (102), the buffer rubber ring (202) is coaxially embedded on the rotating ring (201), and one side of the buffer rubber ring (202) is tightly attached to the rear end cover (102).

7. The tamper-evidencing fingerprint identification device for a safe of claim 1, wherein, The outer periphery edge of the front end cover (101) and the outer periphery edge of the rear end cover (102) are integrally formed with a radial outward extending limiting ring (107), the end faces of the two limiting rings (107) are parallel to each other and correspond; by clamping the inner and outer sides of the safe door with the two limiting rings (107), the shell (1) can be stably fixed on the safe door.

8. The tamper-evidencing fingerprint identification device for a safe of claim 1, wherein, The motor (5) for driving the rotating disc (2) to rotate is fixedly installed on one side of the shell (1) close to the rear end cover (102), and the motor (5) is in transmission connection with the rotating disc (2) through a gear.

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