A palm vein recognition lock and drawer

Abstract

This utility model relates to the field of intelligent lock technology, and discloses a palm vein recognition lock and drawer. The palm vein recognition lock includes: a palm vein recognition component; a control module; a drive component with an output end; a transmission component connected to the output end; a first fixed sliding pin on the transmission component; a locking component including a first connecting rod, a second connecting rod, and multiple locking tongues, wherein the first connecting rod has a first oblique sliding groove, the second connecting rod has a second oblique sliding groove, and the first fixed sliding pin is slidably inserted into the first oblique sliding groove and the second oblique sliding groove; the locking tongues are connected to the first connecting rod and the second connecting rod; when the transmission component moves, the first fixed sliding pin pushes against the first oblique sliding groove and the second oblique sliding groove, causing the first connecting rod and the second connecting rod to move closer to or further away from each other, causing the locking tongues to extend or retract. The advantages of this utility model are that the palm vein recognition lock and drawer have a compact structure, reliable and stable transmission, automatic locking, and a mechanical emergency unlocking function.

Description

Technical Field

[0001] This utility model relates to the field of smart locks, and in particular to a palm vein recognition lock and drawer. Background Technology

[0002] With the development of biometric technology, palm vein recognition technology is gradually being applied to the field of smart locks, offering extremely high security. However, existing palm vein recognition locks mostly use gear and rack or worm gear transmission structures, which are complex, space-consuming, and prone to jamming due to uneven force distribution, affecting stability. Users must manually lock the lock to close it, and some locks with automatic locking functions fail in the event of power failure or module malfunction, resulting in insufficient convenience and reliability. Furthermore, the locks lack an auxiliary pop-out function after unlocking; users still need to manually pry open the embedded drawer after successful unlocking, which is inconvenient. Utility Model Content

[0003] In view of the above-mentioned shortcomings of the existing technology, the technical problem to be solved by this utility model is to propose a palm vein recognition lock and drawer with a compact structure, reliable and stable transmission, automatic locking and mechanical emergency unlocking function.

[0004] The technical solution adopted by this utility model to solve its technical problem is to propose a palm vein recognition lock, comprising: Palm vein recognition component, used to collect and identify palm vein information; The control module is connected to the palm vein recognition component; A drive component, connected to the control module, has an output terminal; A transmission assembly is connected to the output end, and the drive assembly can drive the transmission assembly to move; the transmission assembly is provided with a first fixed sliding pin. The locking assembly includes a first link, a second link, and a plurality of latches. The first link has a first inclined slide groove, and the second link has a second inclined slide groove. The first and second inclined slide grooves are arranged opposite to each other. The first fixed sliding pin is slidably inserted into the first and second inclined slide grooves. The latches are connected to the first link and the second link. When the transmission assembly moves, the first fixed sliding pin pushes against the first inclined sliding groove and the second inclined sliding groove, causing the first connecting rod and the second connecting rod to move closer to or further away from each other, and causing the locking tongue to extend or retract.

[0005] Furthermore, the locking assembly also includes multiple latch mounting seats, which are respectively connected to the first link and the second link; each latch mounting seat is provided with an elastic element, and the latch is movably mounted on the latch mounting seat through the elastic element, with one end of the elastic element abutting against the latch and the other end abutting against the latch mounting seat.

[0006] Furthermore, it also includes a mechanical unlocking assembly, which includes a lock cylinder, a lock cylinder connecting rod, and a slide plate. One end of the lock cylinder connecting rod is connected to the lock cylinder in a transmission manner, and the other end is connected to the slide plate. The lock cylinder connecting rod can drive the slide plate to move. The drive assembly is mounted on the slide plate.

[0007] Furthermore, the drive assembly includes a motor and an eccentric shaft, the eccentric shaft being disposed at the output end of the motor; the transmission assembly is provided with a transverse slide groove, the eccentric shaft passing through the transverse slide groove; the eccentric shaft abuts against the transverse slide groove to drive the transmission assembly to move.

[0008] Furthermore, the transmission assembly includes a mounting plate extending along a first direction and a drive connection portion extending perpendicularly from one end of the mounting plate; the transverse groove is formed on the drive connection portion, and the extending direction of the transverse groove is perpendicular to the first direction; The axis of the eccentric shaft is perpendicular to the drive connection part, and the plane of rotation of the eccentric shaft is perpendicular to the mounting plate.

[0009] Furthermore, the first connecting rod and the second connecting rod are respectively provided with horizontal sliding grooves, and a second fixed sliding pin passes through the horizontal sliding groove; the horizontal sliding groove and the second fixed sliding pin are in sliding engagement.

[0010] Furthermore, the control module is provided with a switch assembly, and the transmission assembly is provided with an abutment member that cooperates with the switch assembly. The abutment member can selectively abut or separate from the switch assembly.

[0011] This utility model also proposes a drawer, comprising: A movable housing and a fixed housing, wherein the movable housing is slidably disposed within the fixed housing; As described above, the palm vein recognition lock is mounted on the movable box. The fixed housing is provided with an oblong groove, and the groove wall abuts against the locking tongue.

[0012] Furthermore, the latch has a guide ramp and a locking surface; the waist-shaped groove has a guide groove wall and a locking groove wall; the guide ramp cooperates with the guide groove wall and is configured to abut against each other through the guide ramp and the guide groove wall to overcome the elastic force of the elastic element and retract the latch; the locking surface cooperates with the locking groove wall and is configured to abut against each other through the locking surface and the locking groove wall to restrict the movable housing from being pulled outward.

[0013] Furthermore, it also includes an elastic ejection assembly, which includes a torsion spring seat, a stop block, and a torsion spring. The torsion spring seat is disposed on the movable housing; the stop block is disposed on the fixed housing; the torsion spring is disposed on the torsion spring seat, with one end abutting against the torsion spring seat and the other end abutting against the stop block.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects: In this invention, a palm vein recognition component identifies the user's palm vein information. After successful recognition, the control module directly controls the drive component to move the transmission component and locking component, thereby unlocking the device. The unlocking response time is short, operation is smooth, and security is high. The first fixed sliding pin on the transmission component simultaneously passes through the first and second inclined sliding grooves. The first fixed sliding pin moves with the transmission component and pushes against the inner walls of the first and second inclined sliding grooves, converting the reciprocating motion of the transmission component into synchronous opposing or disjoint motion of the two connecting rods. This allows the two locking tongues to extend or retract simultaneously. Compared to a single-point locking structure, this design offers better structural stability and a more secure lock.

[0015] This invention includes a mechanical unlocking component. In emergencies such as palm vein recognition component failure or power outage, the user can rotate the lock cylinder with a key, which drives the lock cylinder linkage to rotate and causes the slide plate equipped with the drive component to move up and down. The output end of the drive component is connected to the transmission component. The up and down movement of the slide plate forces the transmission component to move up and down, thereby retracting the bolt to unlock the lock. The structure is simple and meets the operability requirements in emergency situations.

[0016] In this invention, by setting a guide slope and a locking surface on the latch, and correspondingly setting a guide groove wall and a locking groove wall on the waist-shaped groove, the latch has an automatic reset function in conjunction with an elastic element, realizing locking upon closing the door. When closing the drawer, the user does not need to perform any additional operation; the guide slope of the latch will contact the guide groove wall of the waist-shaped groove and automatically compress. After passing the guide groove wall, it will automatically extend under the action of the elastic element, and its locking surface will abut against the locking groove wall of the waist-shaped groove to complete the locking, improving the convenience of use. Moreover, its door-closing and locking function remains unaffected in emergency situations such as power outages. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the structure of a palm vein recognition lock installed in a drawer according to the present invention; Figure 2 for Figure 1 A schematic diagram of the structure when the locking tongue is extended; Figure 3 for Figure 2 Sectional view at point AA along the middle; Figure 4 for Figure 3 A magnified view of a section at point B in the middle; Figure 5 for Figure 1 A schematic diagram of the structure when the locking tongue retracts; Figure 6 for Figure 1 A schematic diagram of the structure when the locking tongue extends and abuts against the waist-shaped groove; Figure 7 for Figure 6 Sectional view at the center CC; Figure 8 for Figure 7 A magnified view of a section at point D; Figure 9 This is an assembly diagram of the drive assembly, transmission assembly, and mechanical unlocking assembly. Figure 10 This is a schematic diagram of the bottom structure of the movable box; Figure 11 A schematic diagram of the structure of the flexible rollout component.

[0018] In the picture: 1. Palm vein recognition component; 2. Control module; 20. Switch assembly; 3. Drive assembly; 30. Output terminal; 31. Motor; 32. Eccentric shaft; 4. Transmission assembly; 40. First fixed sliding pin; 41. Transverse slide groove; 42. Mounting plate; 43. Drive connection part; 44. Abutment part; 5. Locking assembly; 50. First connecting rod; 51. Second connecting rod; 500. Horizontal slide groove; 501. Second fixed slide pin; 52. Lock tongue; 520. Guide slope; 521. Locking surface; 53. First inclined slide groove; 54. Second inclined slide groove; 55. Lock tongue mounting seat; 56. Elastic element; 6. Mechanical unlocking assembly; 60. Lock cylinder; 61. Lock cylinder connecting rod; 62. Slide plate; 7. Movable housing; 70. Fixed housing; 700. Waist-shaped groove; 700A. Guide groove wall; 700B. Locking groove wall; 8. Elastic ejection assembly; 80. Torsion spring seat; 81. Stop block; 82. Torsion spring. Detailed Implementation

[0019] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0020] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0021] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0024] Example 1:

[0025] like Figures 1-11As shown, a palm vein recognition lock in this embodiment mainly includes: a palm vein recognition component 1, a control module 2, a drive component 3, a transmission component 4, and a locking component 5. The palm vein recognition component 1 is electrically connected to the control module 2 and is used to collect and recognize palm vein information, transmitting the information to the control module 2. After successful recognition, the control module 2 sends an unlocking command to the drive component 3, which is electrically connected to it. The drive component 3 has an output terminal 30, which is connected to the transmission component 4 and can drive the transmission component 4 to move vertically up and down. The transmission component 4 has a first fixed sliding pin 40, which moves synchronously with the transmission component 4 when the drive component 3 drives the transmission component 4 to move vertically up and down. The locking component 5 includes a first connecting rod 50, a second connecting rod 51, and two locking tongues 52. The first connecting rod 50 and the second connecting rod 51 are arranged in parallel, and their front ends (the end closest to the transmission component 4) overlap. The first connecting rod 50 has a first inclined groove 53, which is inclined from the upper left to the lower right. The second connecting rod 51 has a second inclined groove 54, which is inclined from the upper right to the lower left. The first inclined groove 53 and the second inclined groove 54 are arranged opposite each other, and their lower end slots overlap. The first fixing pin 40 passes through the first inclined groove 53 and the second inclined groove 54 and can slide in the first inclined groove 53 and the second inclined groove 54. The two locking tongues 52 are respectively arranged at the rear ends of the first connecting rod 50 and the second connecting rod 51. When the locking tongue 52 is in the extended state, the first fixing pin 40 is located in the lower end slot of the first inclined groove 53 and the second inclined groove 54; when the locking tongue 52 is in the retracted state, the first fixing pin 40 slides from the lower end slot of the first inclined groove 53 and the second inclined groove 54 to the upper end slot. When the drive assembly 3 drives the transmission assembly 4 to move vertically, the first fixed sliding pin 40 on it moves synchronously with the transmission assembly 4 in the vertical direction. During the movement, it pushes against the upper groove wall of the first inclined slide groove 53 and the second inclined slide groove 54, causing the first connecting rod 50 and the second connecting rod 51 to slide horizontally towards each other. This causes the locking tongue 52 located at the rear ends of both to retract horizontally, thus unlocking the device. When the transmission assembly 4 moves downward vertically, the first fixed sliding pin 40 moves downward synchronously and pushes against the lower groove wall of the first inclined slide groove 53 and the second inclined slide groove 54 during the movement. This causes the first connecting rod 50 and the second connecting rod 51 to slide horizontally away from each other. This causes the locking tongue 52 located at the rear ends of both to extend horizontally and return to its initial extended state.

[0026] Preferably, the transmission component 4 has a long groove arranged in the vertical direction, and a fixed sliding pin is inserted in the long groove. Through the limiting cooperation between the long groove and the fixed sliding pin, the transmission component 4 can make linear reciprocating motion in the vertical direction, preventing problems such as locking and jamming caused by horizontal deviation or swing of the transmission component 4. At the same time, the upper and lower ends of the long groove limit the extreme displacement of the transmission component 4 to prevent it from falling out during movement.

[0027] In this invention, the palm vein recognition component 1 identifies the user's palm vein information. After successful identification, the control module 2 directly controls the drive component 3 to move the transmission component 4 and the locking component 5, thereby unlocking the device. The unlocking response time is short, the operation is smooth, and the security is high. The first fixed sliding pin 40 on the transmission component 4 passes through the first inclined sliding groove 53 and the second inclined sliding groove 54. The first fixed sliding pin 40 moves with the transmission component 4 and pushes against the inner walls of the first inclined sliding groove 53 and the second inclined sliding groove 54, converting the reciprocating motion of the transmission component 4 into the synchronous opposite or opposite motion of the two connecting rods. This allows the two locking tongues 52 to extend or retract simultaneously. Compared with a single-point locking structure, this design has better structural stability and a more secure locking mechanism.

[0028] Furthermore, the locking assembly 5 also includes two latch mounting seats 55 corresponding one-to-one with the latch 52. Each latch mounting seat 55 is fixedly connected to the tail end (the end away from the transmission assembly 4) of the first link 50 and the second link 51 by screws, and can move synchronously with the first link 50 and the second link 51. The latch mounting seat 55 is provided with an elastic element 56, one end of which abuts against the latch 52, and the other end abuts against the latch mounting seat 55, so that the latch 52 is movably mounted on the latch mounting seat 55.

[0029] Preferably, the elastic element 56 is a helical compression spring. The tail end of the latch 52 is provided with a protrusion, one end of the spring is sleeved on the protrusion, and the other end abuts against the latch mounting seat 55, ensuring that the spring force always acts in the extension and retraction direction of the latch 52, avoiding jamming or locking failure caused by spring misalignment.

[0030] Specifically, the tail of the latch 52 (the end near the connecting assembly) has a guide hole extending along the extension direction of the latch 52. A limiting screw or guide pin perpendicular to the surface of the latch mounting base 55 is fixed on the latch mounting base 55. The pin passes through the guide hole, so that the latch 52 can only move relative to the latch mounting base 55 along the length direction of the guide hole. At the same time, the pin and the guide hole limit each other to prevent the latch 52 from falling off the latch mounting base 55. When the head of the latch 52 is subjected to external pressure inward along its extension direction, the pressure overcomes the spring force and pushes the latch 52 back into the latch mounting base 55. At the same time, the spring is compressed and stores elastic potential energy. When the external pressure disappears, the spring releases the stored energy and drives the latch 52 to extend outward and reset along its extension direction, realizing the extension function of the latch 52 relative to the latch mounting base 55.

[0031] Furthermore, the palm vein recognition lock also includes a mechanical unlocking component 6, which includes a lock cylinder 60, a lock cylinder connecting rod 61, and a slide plate 62. A certain safety distance is maintained between the area where the lock cylinder 60 is installed and the area where the palm vein recognition component 1 is installed to avoid mutual interference and lock body jamming. One end of the lock cylinder connecting rod 61 is hinged to the dial of the lock cylinder 60, and the other end is hinged to the slide plate 62 via a pin. The drive component 3 can be fixed to the slide plate 62 with screws.

[0032] Specifically, when the user uses the key to turn the lock cylinder 60 to unlock, the lock cylinder 60 drives the lock cylinder connecting rod 61 to swing, and the connecting rod in turn drives the slide plate 62 to move in the vertical direction, and simultaneously drives the drive component 3 and the transmission component 4 to move up and down, so as to realize that when the electronic identification fails, the lock tongue 52 is driven to extend and retract by pure mechanical means to complete the unlocking.

[0033] Preferably, the slide plate 62 is provided with a sliding groove in the vertical direction, and the groove cooperates with the limiting member so that the slide plate 62 can only move in the vertical direction.

[0034] In this invention, a mechanical unlocking component 6 is provided. In emergency situations such as failure of the palm vein recognition component 1 or power outage, the user can rotate the lock cylinder 60 with a key, which drives the lock cylinder connecting rod 61 to rotate, and causes the slide plate 62, which is equipped with the drive component 3, to move up and down. The output end 30 of the drive component 3 is connected to the transmission component 4. The up and down movement of the slide plate 62 will force the transmission component 4 to move up and down, thereby causing the bolt 52 to retract and unlock. The structure is simple and meets the operability requirements in emergency situations.

[0035] like Figure 9As shown, the drive assembly 3 further includes a motor 31 and an eccentric shaft 32. The output end 30 of the motor 31 extends horizontally, and one end of the eccentric shaft 32 is fixed to the output end 30, while the other end passes through a transverse groove 41 opened on the transmission assembly 4. When the motor 31 starts, its output end 30 drives the eccentric shaft 32 to rotate around the axis of the motor 31, and the side wall of the eccentric shaft 32 continuously pushes against the inner wall of the transverse groove 41. Because the transmission assembly 4 moves only in the vertical direction through the cooperation of the elongated groove and the fixed sliding pin, the pushing force of the eccentric shaft 32 against the inner wall of the transverse groove 41 drives the transmission assembly 4 to reciprocate in the vertical direction.

[0036] like Figure 9 As shown, the transmission assembly 4 further includes a mounting plate 42 extending vertically and a drive connection portion 43 extending vertically outward from the lower end of the mounting plate 42. A transverse slide groove 41 is formed on the drive connection portion 43 and extends along the length of the drive portion. The extension direction of the transverse slide groove 41 is perpendicular to the vertical direction. The eccentric shaft 32 of the motor 31 passes through the transverse slide groove 41, and the axial direction of the eccentric shaft 32 is perpendicular to the extension direction of the transverse slide groove 41, that is, the axial direction of the eccentric shaft 32 is perpendicular to the drive connection portion 43. When the motor 31 starts, the eccentric shaft 32 moves in its plane of rotation, and its sidewall continuously pushes against the upper or lower wall of the transverse slide groove 41 in the vertical direction. By driving the drive connection portion 43 to move, the mounting plate 42 is driven to reciprocate in the vertical direction. At the same time, the extension direction of the transverse slide groove 41 provides clearance space for the eccentric shaft 32, ensuring smooth motion transition.

[0037] Furthermore, the first link 50 and the second link 51 are respectively provided with horizontal sliding grooves 500, and second fixed sliding pins 501 are respectively inserted into the horizontal sliding grooves 500 and slide in cooperation with the second fixed sliding pins 501. When the first fixed sliding pin 40 pushes against the first inclined sliding groove 53 and the second inclined sliding groove 54, causing the first link 50 and the second link 51 to generate horizontal component forces, since the horizontal sliding grooves 500 are constrained by the second fixed sliding pins 501, the two links can only slide in the horizontal direction and cannot wobble in the vertical direction, thereby improving the stability of the extension and retraction of the latch 52.

[0038] Furthermore, the control module 2 is equipped with a switch assembly 20, and the transmission assembly 4 is equipped with an abutment member 44 that cooperates with the switch assembly 20. The extension direction of the abutment member 44 is perpendicular to the mounting plate 42, and the abutment member 44 can abut or separate from the switch assembly 20 through the vertical movement of the mounting plate 42. When unlocking is required, the motor 31 drives the eccentric shaft 32 to rotate, and the first fixed sliding pin 40 pushes against the first inclined sliding groove 53 and the second inclined sliding groove 54, causing the first connecting rod 50 and the second connecting rod 51 to move towards each other, and driving the lock tongue 52 mounted on it to move inward in the horizontal direction. When the motor 31 rotates to 180°, the mounting plate 42 moves upward to its limit position. At this point, the abutment 44 is completely separated from the switch assembly 20, and the switch signal changes from closed to open. The motor 31 continues to rotate, and after the eccentric shaft 32 rotates 180°, its pushing direction reverses, causing the drive connection part 43 and the mounting plate 42 to move downward. During the downward movement of the mounting plate 42, the abutment 44 moves downward synchronously until it presses against and closes the switch assembly 20 again. At this time, the control module 2 receives the switch closing signal, determines that the transmission assembly 4 has been reset to the preset stop position, and controls the motor 31 to be powered off and stop rotating.

[0039] Example 2:

[0040] This utility model also proposes a drawer, mainly comprising: a movable box 7, a fixed box 70, and a palm vein recognition lock as described in Embodiment 1. The movable box 7 is slidably disposed inside the fixed box 70 via a slide rail assembly, and the palm vein recognition lock is disposed on the inner side of the front panel of the movable box 7. The fixed box 70 is provided with a waist-shaped groove 700, the groove wall of which abuts against the locking tongue 52 to achieve locking. When the movable box 7 is pushed into the fixed box 70 to the closed position, the locking tongue 52 extends, and its side wall abuts against the groove wall of the waist-shaped groove 700, thereby locking the movable box 7 inside the fixed box 70 and preventing it from being pulled open arbitrarily.

[0041] Specifically, the first fixed sliding pin 40 and the second fixed sliding pin 501 are both fixedly installed on the mounting panel of the movable housing 7.

[0042] like Figures 2-8 As shown, where, Figure 5 and Figure 6 From respectively Figure 1The lock tongue 52 is cut at different positions. Furthermore, the lock tongue 52 has a guide slope 520 and a locking surface 521. The guide slope 520 is inclined from the end of the lock tongue 52 to the root. The waist-shaped groove 700 has a guide groove wall 700A and a locking groove wall 700B. The guide slope 520 can slide along the guide groove wall 700A. When the user closes the drawer, the movable box 7 moves the latch 52 toward the fixed box 70. The guide ramp 520 contacts the guide groove wall 700A of the waist-shaped groove 700. As the drawer continues to move forward, the guide ramp 520 slides along the guide groove wall 700A and overcomes the elastic force of the elastic element 56, causing the latch 52 to move in the retracting direction. When the latch 52 has completely passed the guide groove wall 700A, the latch 52 is aligned with the inside of the waist-shaped groove 700. At this time, the elastic element 56 resets and pushes the latch 52 to extend automatically, so that the latch 52 enters the waist-shaped groove 700. The locking surface 521 abuts against the locking groove wall 700B of the waist-shaped groove 700, restricting the movable box 7 from moving in the pulling direction and realizing automatic locking.

[0043] Preferably, the guide slope 520 is arc-shaped.

[0044] In this invention, by providing a guide slope 520 and a locking surface 521 on the latch 52, and correspondingly providing a guide groove wall 700A and a locking groove wall 700B on the waist-shaped groove 700, the latch 52, in conjunction with the elastic element 56, has an automatic reset function, achieving locking upon closing the door. When closing the drawer, the user does not need to perform any additional operations; the guide slope 520 of the latch 52 will contact the guide groove wall 700A of the waist-shaped groove 700 and automatically compress. After passing the guide groove wall 700A, the latch 52 automatically extends under the action of the elastic element 56, and its locking surface 521 abuts against the locking groove wall 700B of the waist-shaped groove 700, completing the locking and improving the convenience of use. Moreover, its door-closing and locking function remains unaffected in emergency situations such as power outages.

[0045] like Figure 11 As shown, the drawer further includes an elastic ejection assembly 8, which mainly includes a torsion spring seat 80, a stop block 81, and a torsion spring 82. The torsion spring seat 80 is fixedly installed at the bottom of the movable box 7, the stop block 81 is installed inside the fixed box 70, and the spring body of the torsion spring 82 is sleeved on the torsion spring seat 80, with one end (fixed end) of its torsion arm abutting against the torsion spring seat 80 and the other end (movable end) abutting against the stop block 81. When the movable box 7 is closed, the movable end of the torsion spring 82 abuts against the stop block 81 and undergoes torsional deformation. At this time, the locking surface 521 of the locking tongue 52 abuts against the locking groove wall 700B of the waist-shaped groove 700, and the torsion spring 82 stores elastic potential energy. When the user successfully unlocks the drawer, the torsion spring 82 releases its elastic potential energy, and its movable end pushes against the stop block 81, applying an outward elastic force to the movable box 7, pushing the movable box 7 to automatically eject a certain distance, making it convenient for the user to open the drawer.

[0046] It should be noted that the latch 52 only retracts backward relative to the latch mount 55 when the drawer is closed, i.e., when the guide ramp 520 of the latch 52 contacts the guide groove wall 700A of the waist-shaped groove 700, overcoming the elastic force of the elastic element 56. During the process driven by the drive assembly, i.e., when the first link 50 and the second link 51 move towards or away from each other, the entire latch assembly (i.e., the latch mount 55 and the latch 52 mounted on it) is moved horizontally as a whole. That is, the relative position of the latch 52 and the latch mount 55 remains unchanged, and the elastic element 56 is not compressed.

[0047] In this invention, after the palm vein recognition component 1 verifies the user's identity, the control module 2 sends an unlocking command to the motor 31. The motor 31 drives the eccentric shaft 32 to rotate, and the eccentric shaft 32 pushes against the transverse slide groove 41 on the drive connection part 43, converting the rotational motion into a reciprocating linear motion of the mounting plate 42 in the vertical direction. When the mounting plate 42 moves upward, the first fixed sliding pin 40 on it simultaneously pushes against the first inclined slide groove 53 of the first connecting rod 50 and the second inclined slide groove 54 of the second connecting rod 51, causing the two connecting rods to move closer to each other. This causes the latch 52, mounted on the two connecting rods, to move inward synchronously, unlocking the door. The torsion spring 82 pushes against the stop block 81, causing the movable box 7 to pop out automatically. The motor 31 continues to rotate, causing the eccentric shaft 32 to push against the transverse slide groove 41 in the opposite direction, moving the mounting plate 42 downward. The first fixed sliding pin 40 pushes against the other side of the inclined slide groove, causing the two connecting rods to move away from each other, thereby causing the latch 52 to move outward until the abutment member 44 closes the switch assembly 20 again. The motor 31 stops rotating, and the latch 52 returns to its initial extended position. When closing the box, the guide slope 520 of the latch 52 abuts against the guide groove wall 700A of the waist-shaped groove 700 on the fixed box 70, and overcomes the elastic force of the elastic member 56 to retract the latch 52. After passing the guide groove wall 700A, the latch 52 automatically extends under the action of the elastic member 56, and its locking surface 521 abuts against the locking groove wall 700B, realizing automatic locking when the door is closed. In the event of palm vein component failure or power outage, the user can use the key to turn the lock cylinder 60, which will drive the lock cylinder connecting rod 61 to pull the slide plate 62 upward in the vertical direction. The slide plate 62 will simultaneously drive the drive component 3 and the transmission component 4 to move, thereby realizing mechanical emergency unlocking.

Claims

1. A palm vein recognition lock, characterized in that, include: Palm vein recognition component, used to collect and identify palm vein information; The control module is connected to the palm vein recognition component; A drive component, connected to the control module, has an output terminal; A transmission assembly is connected to the output end, and the drive assembly can drive the transmission assembly to move; the transmission assembly is provided with a first fixed sliding pin. The locking assembly includes a first link, a second link, and a plurality of latches. The first link has a first inclined slide groove, and the second link has a second inclined slide groove. The first and second inclined slide grooves are arranged opposite to each other. The first fixed sliding pin is slidably inserted into the first and second inclined slide grooves. The latches are connected to the first link and the second link. When the transmission assembly moves, the first fixed sliding pin pushes against the first inclined sliding groove and the second inclined sliding groove, causing the first connecting rod and the second connecting rod to move closer to or further away from each other, and causing the locking tongue to extend or retract.

2. The palm vein recognition lock according to claim 1, characterized in that, The locking assembly further includes multiple latch mounting seats, which are respectively connected to the first link and the second link; each latch mounting seat is provided with an elastic element, and the latch is movably mounted on the latch mounting seat through the elastic element, with one end of the elastic element abutting against the latch and the other end abutting against the latch mounting seat.

3. The palm vein recognition lock according to claim 1, characterized in that, It also includes a mechanical unlocking assembly, which includes a lock cylinder, a lock cylinder connecting rod, and a slide plate. One end of the lock cylinder connecting rod is connected to the lock cylinder in a transmission manner, and the other end is connected to the slide plate. The lock cylinder connecting rod can drive the slide plate to move. The drive assembly is mounted on the slide plate.

4. The palm vein recognition lock according to claim 1, characterized in that, The drive assembly includes a motor and an eccentric shaft, the eccentric shaft being disposed at the output end of the motor; the transmission assembly is provided with a transverse slide groove, the eccentric shaft passing through the transverse slide groove; the eccentric shaft pushes against the transverse slide groove to drive the transmission assembly to move.

5. The palm vein recognition lock according to claim 4, characterized in that, The transmission assembly includes a mounting plate extending along a first direction and a drive connection portion extending perpendicularly from one end of the mounting plate; the transverse slide groove is formed on the drive connection portion, and the extending direction of the transverse slide groove is perpendicular to the first direction. The axis of the eccentric shaft is perpendicular to the drive connection part, and the plane of rotation of the eccentric shaft is perpendicular to the mounting plate.

6. The palm vein recognition lock according to claim 5, characterized in that, The first connecting rod and the second connecting rod are respectively provided with horizontal sliding grooves, and a second fixed sliding pin is inserted in the horizontal sliding groove; the horizontal sliding groove and the second fixed sliding pin are in sliding engagement.

7. The palm vein recognition lock according to claim 1, characterized in that, The control module is provided with a switch assembly, and the transmission assembly is provided with an abutment that cooperates with the switch assembly. The abutment can selectively abut or separate from the switch assembly.

8. A drawer, characterized in that, include: A movable housing and a fixed housing, wherein the movable housing is slidably disposed within the fixed housing; The palm vein recognition lock as described in any one of claims 1-7, wherein the palm vein recognition lock is disposed on the movable housing; The fixed housing is provided with an oblong groove, and the groove wall abuts against the locking tongue.

9. The drawer according to claim 8, characterized in that, The latch has a guide ramp and a locking surface; the waist-shaped groove has a guide groove wall and a locking groove wall; the guide ramp and the guide groove wall cooperate and are configured to abut against each other to overcome the elastic force of the elastic element and retract the latch; the locking surface and the locking groove wall cooperate and are configured to abut against each other to restrict the movable housing from being pulled outward.

10. The drawer according to claim 8, characterized in that, It also includes an elastic ejection assembly, which includes a torsion spring seat, a stop block, and a torsion spring. The torsion spring seat is disposed on the movable housing; the stop block is disposed on the fixed housing; the torsion spring is disposed on the torsion spring seat, with one end abutting against the torsion spring seat and the other end abutting against the stop block.

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