A cryptographic box

Abstract

The utility model discloses a kind of coded boxes, it is related to coded box technical field, including box, box cover and lock cover mechanism, box side is equipped with mounting cavity, box side is provided with coded input platform;Lock cover mechanism includes mounting plate, first lock pin and second lock pin slidingly installed in mounting plate, first gear rotationally installed in mounting plate, first lock pin and second lock pin are respectively with the transmission connection of the upper and lower ends of first gear, first gear is drivenly connected with driving motor;Main control circuit board is fixedly installed in mounting cavity;Box cover is connected with a pair of lock ring, the upper end of box and the corresponding place of lock ring are all provided with the opening of intercommunication mounting cavity, when closing box cover, 2 lock rings are respectively inserted into 2 openings, main control circuit board controls driving motor to drive first lock pin and second lock pin respectively corresponding insertion lock ring, complete locking.The technical scheme of the utility model can be convenient to open and close coded box, avoid the problem that traditional mechanical lock core key is easy to lose, and increase security.

Description

Technical Field

[0001] This utility model relates to the field of combination lock boxes, and in particular to the design of an electronic combination lock box. Background Technology

[0002] A combination lock box is a storage box equipped with a combination lock device. It is mainly used to store valuables or private items such as cash, documents, and jewelry. The lock is controlled by a preset combination of numbers, letters, or symbols. It can only be opened by entering the correct password, which can effectively improve the security of the items. Common materials include metal and ABS plastic. Styles include hand-held and lever-operated models. They are widely used in daily household storage, travel, and office settings, combining practicality and anti-theft functions.

[0003] However, most current combination locks are mechanical locks that are unlocked with a key. In daily use, the key is easily forgotten or lost, and it is also easily copied, resulting in low security. Therefore, these technical problems need to be solved. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model proposes a combination lock box, which aims to solve the problems of easy loss of keys and insufficient security caused by easy duplication of keys in the existing technology.

[0005] To solve the above-mentioned technical problems, the basic technical solution proposed by this utility model is as follows: a combination lock box, including a box body, a box lid, and a locking mechanism. One side of the box lid is axially hinged to one side of the upper end of the box body. The box body has a mounting cavity on the opposite side of the box body opposite to the axially hinged box lid. The locking mechanism is installed in the mounting cavity. A combination lock input panel is provided on the side of the box body where the mounting cavity is located. The locking mechanism includes a mounting plate, a first locking pin and a second locking pin slidably mounted on the mounting plate, and a first gear rotatably mounted on the mounting plate. The mounting plate is fixedly connected to the inner wall of the mounting cavity. The upper end of the first locking pin and the lower end of the second locking pin are respectively provided with racks. The first locking pin and the second locking pin are arranged in a combination lock. The first gear is positioned at both ends, and the racks of the first locking pin and the second locking pin are engaged with the first gear. The first gear is driven by a drive motor. A main control circuit board is fixedly installed inside the mounting cavity. The password input panel is equipped with multiple buttons, and the main control circuit board is electrically connected to the drive motor and the buttons respectively. A pair of locking rings are fixedly connected to the side of the box cover that is axially hinged to the box body. An opening communicating with the mounting cavity is opened at the upper end of the box body corresponding to the locking rings. When the box cover is closed, the two locking rings are inserted into the two openings respectively. The main control circuit board controls the drive motor to drive the first locking pin and the second locking pin to be inserted into the locking rings respectively, thus completing the locking.

[0006] By entering the correct password on the keypad, the lock can be opened with a single button. The main control circuit board controls the drive motor to retract the first and second locking pins, releasing the lock ring from its locked state. There is no need to manually open the latch, making it convenient and quick.

[0007] Preferably, one end of the first locking pin is provided with a protrusion, and a micro switch is fixedly installed on the mounting plate along the travel path of the protrusion, so that when the first locking pin is inserted into the locking ring, the protrusion abuts against the micro switch.

[0008] Furthermore, the housing has a groove on the outer side of the mounting plate and a waterproof plug that can open and close relative to the groove. A through hole is provided at the bottom of the groove, and a mechanical lock cylinder is fixedly installed in the through hole. A charging interface is also provided at the bottom of the groove, away from the through hole, and the charging interface is electrically connected to the main control circuit board. The second lock pin is driven by a second gear, which is rotatably connected to the mounting plate. An arc-shaped groove is provided at the end of the second gear near the mounting plate. A push rod is fixedly connected at the end of the mechanical lock cylinder away from the through hole, and the push rod is movably inserted into the arc-shaped groove. A locking block for fixing the second lock pin is fixedly connected at the end of the second gear away from the mounting plate.

[0009] Preferably, a first retaining strip is fixedly provided on the upper end of the box body along its circumference, and a second retaining strip is fixedly provided on the upper end of the first retaining strip. The width of the second retaining strip is smaller than that of the first retaining strip. A sealing groove corresponding to the first retaining strip is opened on the lower end of the box cover along its circumference. An elastic sealing strip is fixedly connected to the bottom of the sealing groove. When the box cover is closed, the first retaining strip is embedded in the sealing groove, causing the second retaining strip to compress and deform the elastic sealing strip, so that the elastic sealing strip fills the gap between the second retaining strip and the sealing groove.

[0010] Specifically, the first card bar has arc-shaped guide portions on both sides near the end of the second card bar.

[0011] Preferably, each of the two locking ring structures includes a fixing part and a reinforcing part. The lower end of the fixing part has a fixing hole for the insertion of the first locking pin and the second locking pin. The reinforcing part is fitted onto the upper end of the fixing part and is fixedly connected to the box cover.

[0012] The bottom of the box cover is fixedly connected with a reinforcing rib, and the reinforcing part is fixedly connected to the reinforcing rib.

[0013] Preferably, the box body has two hooks on the outer wall at the end opposite to its hinge, and the box cover has a retaining seat on the outer wall at the end opposite to its hinge for each hook.

[0014] Furthermore, the box body is fixed with reinforcing ribs on both sides of the hook, and the reinforcing ribs extend along the side wall of the box body to the bottom of the box body.

[0015] Optionally, a fingerprint unlocking module is provided at one end of the password input terminal, and the fingerprint unlocking module is electrically connected to the main control circuit board.

[0016] The beneficial effects of this utility model are:

[0017] The technical solution of this utility model uses a main control circuit board to control a drive motor to drive the first gear to rotate. Since the first locking pin and the second locking pin are respectively located at opposite ends of the first gear and are connected to the first gear for transmission, when the first gear rotates, it simultaneously drives the first locking pin and the second locking pin to move in opposite directions or relative to each other. Therefore, when the lid is closed, the two locking rings are respectively inserted into the two openings. By controlling the drive motor to drive the first locking pin and the second locking pin to move in opposite directions, the first locking pin and the second locking pin are inserted into the locking rings to lock the lid. When it is necessary to open the lid, after entering the correct password on the password input table, the main control circuit board controls the drive motor to automatically drive the first locking pin and the second locking pin to move relative to each other, so that the first locking pin and the second locking pin disengage from the locking rings and release the locking state of the lid. This allows the safe to be opened quickly and easily using an electronic password without the need for a key, which is convenient and avoids the problems of traditional keys being easily stolen and copied, and having insufficient security. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a combination lock box according to an embodiment of the present invention;

[0019] Figure 2 This is a cross-sectional view of a combination lock box according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the locking mechanism of a combination lock box according to an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the mechanical lock core structure of a combination lock box according to an embodiment of the present invention;

[0022] Figure 5 This is a partial enlarged view of part A of a combination lock box according to an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the lock ring structure of a combination lock box according to an embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the box structure of a combination lock box according to an embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Case body; 2. Case lid; 3. Reinforced latch; 4. Locking mechanism; 11. Groove; 12. Waterproof rubber plug; 13. Mounting cavity; 14. Opening; 15. First locking strip; 16. Second locking strip; 21. Password input panel; 22. X-shaped letter pattern; 23. Reinforcing rib; 24. Sealing groove; 31. Hook; 32. Card holder; 33. Reinforcing rib; 41. Mounting plate; 42. First gear; 43. First locking pin; 44. 45. Second locking pin; 46. Micro switch; 57. Main control circuit board; 58. Second gear; 59. Mechanical lock cylinder; 110. Through hole; 111. Charging interface; 211. Button; 212. Fingerprint unlocking module; 241. Elastic sealing strip; 251. Arc-shaped guide part; 431. Rack; 432. Guide groove; 433. Protrusion; 511. Locking block; 512. Arc-shaped groove; 521. Push rod; 4411. Fixing hole. Detailed Implementation

[0027] The following will be combined with the appendix Figure 1 To be continued Figure 7 The technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0028] This utility model proposes a combination lock box.

[0029] In one embodiment of this utility model, such as Figures 1 to 3As shown, this type of combination lock includes a lock body 1, a lock lid 2, and a locking mechanism 4. One side of the lock lid 2 is axially hinged to one side of the upper end of the lock body 1. The lock lid 2 and the lock body 1 are connected together by a hinge structure, allowing the lock lid 2 to be closed and opened relative to the lock body 1. The lock body 1 has a mounting cavity 13 on the opposite side of the lock lid 2. The mounting cavity 13 can be integrally injection molded with the lock body 1 and is used to install the locking mechanism 4. The locking mechanism 4 is installed in the mounting cavity 13. The lock body 1 also has a combination input panel 21 on the side where the mounting cavity 13 is located. The position is not limited, but it is preferably centered, so as to be integrated with the lock body. The device comprises a single-piece molded platform. The password input counter 21 can be tilted or horizontally for easy password input. It includes numeric buttons and an unlock button. The locking mechanism 4 includes a mounting plate 41, a first locking pin 43 and a second locking pin 44 slidably mounted on the mounting plate 41, and a first gear 42 rotatably mounted on the mounting plate 41. The first locking pin 43 and the second locking pin 44 are located at opposite ends of the first gear 42. Preferably, the mounting plate 41 has guide posts at the upper and lower ends of the first gear 42. The first locking pin 43 has a rectangular opening along its length near the end of the first gear 42. A first guide groove 432 is provided, and a second guide groove 432 is provided along the length of the first locking pin 43 near the end of the first gear 42. The guide groove 432 of the first locking pin 43 and the second guide groove 432 of the second locking pin 44 are respectively fitted into the guide posts at the upper and lower ends of the first gear 42. Both the first guide groove 432 and the second guide groove 432 are elongated. The mounting plate 41 is fixed in the mounting cavity 13 with screws. If the first locking pin 43 is set at the lower end of the first gear 42 and the second locking pin 44 is set at the upper end of the second gear 51, then the upper end of the first locking pin 43 and the lower end of the second locking pin 44 will be connected. Each is provided with a rack 431, and the rack 431 of the first locking pin 43 and the rack 431 of the second locking pin 44 are both meshed with the first gear 42. A drive motor is fixedly mounted on the mounting plate 41, and the rotation shaft of the drive motor is aligned with the center of the first gear 42 and fixedly connected to the first gear 42. In order to facilitate the control of the drive motor, a main control circuit board 46 is fixedly mounted in the mounting cavity 13. Preferably, the main control circuit board 46 is mounted on the end of the fixed mounting plate 41 away from the first gear 42, and the main control circuit board 46 is electrically connected to the drive motor, the digital keypad 211 and the unlocking keypad 211 respectively.Additionally, a pair of locking rings are fixedly connected to the side of the lid 2 opposite to the axially hinged connection with the body 1. The locking rings are positioned at opposite ends of the first locking pin 43 and the second locking pin 44, and at a certain distance from the first locking pin 43 and the second locking pin 44, facilitating the insertion and disengagement of the first locking pin 43 from the locking rings. The locking rings can be integrally injection molded with the lid 2, or fixed to the lid 2 with screws. An opening 14 corresponding to the locking rings is provided at the upper end of the body 1, communicating with the mounting cavity 13, to facilitate the insertion of the locking rings. A battery compartment is provided on one side of the body 1 for installing batteries and electrically connecting the batteries to the main control circuit board 46 to control the drive motor and other electrical components. When the lid 2 is closed, the two locking rings are inserted into the two openings respectively. Inside opening 14, pressing the unlock button triggers the main control circuit board 46 to receive a locking signal. The main control circuit board 46 then controls the drive motor to rotate the first gear 42, causing the first locking pin 43 and the second locking pin 44 to move in opposite directions, inserting them into their corresponding locking rings and completing the locking process. To open the lid 2, the correct password is entered on the password input panel 21, and the unlock button is pressed. After verifying the password is correct, the main control circuit board 46 controls the drive motor to rotate the first gear 42, causing the first locking pin 43 and the second locking pin 44 to move relative to each other, disengaging them from their corresponding locking rings and releasing the locking rings. This eliminates the need for manual unlocking, making the process convenient and quick.

[0030] Specifically, such as Figure 3 As shown, a protrusion 433 is provided at one end of the first locking pin 43 or the second locking pin 44, preferably the first locking pin 43. The protrusion 433 can be integrally formed with the first locking pin 43, or it can be fixed by screws, welding or gluing. A micro switch 45 is fixedly installed on the mounting plate 41 on the travel path of the protrusion 433. When the first locking pin 43 is inserted into the locking ring, the protrusion 433 abuts against the micro switch 45, and the relevant circuit of the micro switch 45 is turned on, so that the main control circuit board 46 can determine that the first locking pin 43 and the second locking pin 44 have moved to the preset position, and then control the drive motor to stop driving.

[0031] To enhance the security of a combination lock, a mechanical lock can be added for double security. For details, please refer to [link / reference needed]. Figure 4 as well as Figure 6The housing 1 has a groove 11 and a waterproof plug 12 that can open and close relative to the groove 11 on the outer side of the mounting plate 41. The waterproof plug 12 seals the groove 11 to prevent water from entering. The waterproof plug 12 can be a rubber plug with a protrusion at one end. The housing 1 has a fixing groove at the bottom of the groove 11. The protrusion of the rubber plug is embedded into the fixing groove and fixed with glue or screws, which facilitates the opening and closing of the rubber plug and prevents it from falling off and being lost. In order to facilitate the installation of a mechanical lock, the housing 1 has a through hole at the bottom of the groove 11. 111. The mechanical lock cylinder 52 of the mechanical lock is fixedly installed in the through hole 111, with the lock hole of the mechanical lock cylinder 52 facing the outside of the housing 1. The housing 1 is also provided with a charging interface 112 at the bottom of the groove 11, avoiding the through hole 111. The charging interface 112 is electrically connected to the main control circuit board 46 to facilitate battery charging. The first locking pin 43 or the second locking pin 44 is driven by the second gear 51, preferably the second locking pin 44. The gear drives the second gear 51, that is, a rack 431 is provided on one side of the second locking pin 44 and the rack 431 meshes with the second gear 51. The second gear 51 is rotatably mounted on the mounting plate 41, allowing it to rotate freely. An arc-shaped groove 512 is formed at the end of the second gear 51 near the mounting plate 41. A push rod 521 is fixedly connected to the end of the mechanical lock cylinder away from the through hole 111. The push rod 521 is fixedly connected to the rotating end of the mechanical lock cylinder 52, and its rotation radius is the same as the radius of the arc-shaped groove 512. Finally, the push rod 521 is movably inserted into the arc-shaped groove 512. A locking block 511 is fixedly connected to the end of the second gear 51 away from the mounting plate 41 to secure the second locking pin 4. When the key is inserted into the mechanical lock cylinder, the key is turned to drive the push rod 521 to rotate. The push rod 521 pushes the second gear 51 to rotate, causing the locking block 511 to engage with the rack 431 of the second locking pin 44. Then the key is pulled out to complete the locking of the second locking pin 44. Since both the first locking pin 43 and the second locking pin 44 are connected to the first gear 42, the second locking pin 44 is also locked. The arc groove 512 adapts to the rotation stroke of the mechanical lock so that when the mechanical lock is locked, the locking block 511 rotates onto the rack 431 of the second locking pin 44.

[0032] Because the products stored are generally valuable and cannot come into contact with water, the combination lock case requires a certain level of waterproofing. In one feasible embodiment, such as... Figures 5 to 7As shown, a first retaining strip 15 is fixedly installed along the circumference of the upper end of the box body 1, with the first retaining strip 15 connected end to end. A second retaining strip 16 is fixedly installed above the first retaining strip 15. The shape of the second retaining strip 16 is similar to that of the first retaining strip 15, but the width of the second retaining strip 16 is smaller than that of the first retaining strip 15. The second retaining strip 16 is positioned in the middle of the upper end of the first retaining strip 15, forming a T-shaped structure. Correspondingly, a sealing groove 24 corresponding to the first retaining strip 15 is opened along the circumference of the lower end of the box cover 2. The width of the sealing groove 24 is slightly larger than the width of the first retaining strip 15, and the difference in width is less than 0.1 mm, so that the box can be closed. When the lid is closed, the first locking strip 15 is embedded in the sealing groove 24 and presses against the sealing groove 24 to increase the sealing performance. Furthermore, an elastic sealing strip 241 is fixedly connected to the bottom of the sealing groove 24. The elastic sealing strip 241 can be a rubber sealing ring, which is embedded in the sealing groove 24 and fixed to the bottom of the sealing groove 24 by adhesive bonding. When the lid is closed, the first locking strip 15 is embedded in the sealing groove 24, causing the second locking strip 16 to compress and deform the elastic sealing strip 241, so that the elastic sealing strip 241 fills the gap between the second locking strip 16 and the sealing groove 24, further increasing the sealing performance of the combination lock and increasing its waterproof performance.

[0033] When closing the lid 2, since the width of the first retaining strip 15 is not much different from the width of the sealing groove 24, it is not easy to embed the first retaining strip 15 into the sealing groove 24. Therefore, arc-shaped guide portions 251 are provided on both sides of the first retaining strip 15 near the end of the second retaining strip 16. (Refer to...) Figure 5 The rounded corners can be directly processed to obtain the arc-shaped guide part 251, which plays a guiding role, increases the fault tolerance rate, and makes it easier to close the box cover 2.

[0034] Furthermore, the connection between the locking ring and the lid 2 is generally quite fragile and prone to damage. In another possible implementation, such as... Figure 6 As shown, both locking ring structures include a fixing part and a reinforcing part. The fixing part is used to connect and fix with the first locking pin 43 and the second locking pin 44. The reinforcing part is used to strengthen the structural stability of the fixing part. The fixing part can be made of stainless steel or engineering plastic. The reinforcing part is made of engineering plastic. A fixing hole 4411 is provided at the lower end of the fixing part for the first locking pin 43 and the second locking pin 44 to be inserted. The two sides of the upper end of the reinforcing part are set in a serrated shape. The reinforcing part is fitted onto the upper end of the fixing part by a fitting process, and the reinforcing part is fixedly connected to the box cover 2. Multiple reinforcing ribs 23 are also provided on the periphery of the reinforcing part. The reinforcing part is integrally formed with the box cover 2 by injection molding. By integrally forming the reinforcing part with the box body 1, the reliability of the connection between the two is increased. Fitting the reinforcing part onto the fixing part increases the contact area with the fixing part, which can fix the fixing part well.

[0035] Furthermore, a reinforcing rib 23 is fixedly connected to the bottom of the lid 2. The reinforcing rib 23 is evenly distributed in various parts of the lid 2. Preferably, refer to Figure 1 and Figure 6 An X-shaped letter pattern 22 is provided on the upper surface of the lid 2, and the X-shaped letter pattern 22 occupies more than half of the area of ​​the upper surface of the lid 2. On the lower surface of the lid 2, a reinforcing rib 23 is provided along the outer contour of the X-shape, forming an X shape. While increasing the aesthetics of the combination lock, the reinforcing rib 23 evenly reinforces various areas of the lid 2. The reinforcing part is fixedly connected to the reinforcing rib 23, thereby further increasing the reliability of the connection between the reinforcing part and the lid 2. By evenly distributing the reinforcing rib 23 to various parts of the lid 2, damage to the lock is prevented. Furthermore, due to the continuity of the X-shaped reinforcing rib 23, when the reinforcing part applies force to the reinforcing rib 23, the reinforcing part pulls on the entire X-shaped reinforcing rib 23. The X-shaped reinforcing rib 23 further applies the force to the lid 2, evenly distributing the force and greatly increasing the area of ​​action on the lid 2, thereby further increasing the tensile strength of the lid 2.

[0036] To further increase the fixing strength of the box body 1 and the box cover 2, a reinforcing buckle 3 is added to fix the box body 1 and the box cover 2. Optionally, refer to Figure 1 as well as Figure 7 The box body 1 has two hooks 31 on the outer wall opposite to its hinge point. The box cover 2 has a retaining seat 32 on the outer wall opposite to its hinge point for each hook 31. The hooks 31 are used to further fix the box body 1 and the box cover 2.

[0037] Among them, such as Figure 1 As shown, the box body 1 is fixed with reinforcing ribs 33 on both sides of the hook 31. The reinforcing ribs 33 extend along the side wall of the box body 1 to the bottom of the box body 1. The ribs 33 reinforce the connection between the hook 31 and the box body 1 to prevent the box body 1 from being too weak and breaking.

[0038] Similarly, multiple ribs 33 are also provided at the coaxial hinge connection between the box body 1 and the box cover 2 to strengthen the overall structure.

[0039] Optionally, such as Figure 7 As shown, a fingerprint unlocking module 212 is provided at one end of the password input station 21. The fingerprint unlocking module 212 is electrically connected to the main control circuit board 46. Unlocking is performed through the fingerprint unlocking module 212. When the main control circuit board 46 detects the correct fingerprint pattern, it controls the drive motor to release the lock ring so as to open the box cover 2.

[0040] Optionally, the housing 1 is also provided with a squeezing cavity below the mounting cavity 13, which is used to thin the wall of the part other than the mounting cavity 13 on the side where the mounting cavity 13 is located, so as to avoid the plastic being too thick to be made and unable to be produced. The finished product will have a silicone part to fill this part.

[0041] Specifically, the working principle and usage process of this utility model are as follows: The main control circuit board 46 controls the drive motor to drive the first gear 42 to rotate. Since the first locking pin 43 and the second locking pin 44 are respectively located at opposite ends of the first gear 42 and are connected to the first gear 42 for transmission, when the first gear 42 rotates, it simultaneously drives the first locking pin 43 and the second locking pin 44 to move in opposite directions or relative to each other. Therefore, when the lid 2 is closed, the two locking rings are respectively inserted into the two openings 14. By controlling the drive motor to drive the first locking pin 43 and the second locking pin 44 to move in opposite directions, the first locking pin 43 and the second locking pin 44 are inserted into the locking rings to lock the lid 2. When it is necessary to open the lid 2, after entering the correct password on the password input table 21, the main control circuit board 46 controls the drive motor to automatically drive the first locking pin 43 and the second locking pin 44 to move relative to each other, so that the first locking pin 43 and the second locking pin 44 disengage from the locking rings and release the locking state of the lid 2. This achieves the ability to quickly open the combination lock box without the use of a key by means of an electronic password, which is convenient and fast, and avoids the problem that traditional keys are easy to be stolen and copied, and have insufficient security.

[0042] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A combination lock box, comprising a box body (1), a box lid (2), and a locking mechanism (4), wherein one side of the box lid (2) is axially hinged to one side of the upper end of the box body (1), characterized in that, The box body (1) has an installation cavity (13) on the other side opposite to the box cover (2) which is axially hinged. The locking mechanism (4) is installed in the installation cavity (13). The box body (1) has a password input table (21) on the side where the installation cavity (13) is located. The locking mechanism (4) includes a mounting plate (41), a first locking pin (43) and a second locking pin (44) slidably mounted on the mounting plate (41), and a first gear (42) rotatably mounted on the mounting plate (41). The mounting plate (41) is fixedly connected to the inner wall of the mounting cavity (13). The upper end of the first locking pin (43) and the lower end of the second locking pin (44) are respectively provided with racks (431). The first locking pin (43) and the second locking pin (44) are arranged at opposite ends of the first gear (42) and the racks (431) of the first locking pin (43) and the second locking pin (44) are both meshed with the first gear (42). The first gear (42) is driven by a drive motor. The main control circuit board (46) is fixedly installed in the mounting cavity (13), and the password input table (21) is provided with multiple buttons (211). The main control circuit board (46) is electrically connected to the drive motor and the buttons (211) respectively. The lid (2) is fixedly connected to a pair of locking rings on the side opposite to the axial hinge connection with the body (1). The upper end of the body (1) is provided with an opening (14) that connects to the mounting cavity (13) at the position corresponding to the locking ring. When the lid (2) is closed, the two locking rings are inserted into the two openings (14) respectively. The main control circuit board (46) controls the drive motor to drive the first locking pin (43) and the second locking pin (44) to be inserted into the locking ring respectively to complete the locking.

2. A combination lock box according to claim 1, characterized in that, The first locking pin (43) has a protrusion (433) at one end. The mounting plate (41) has a micro switch (45) fixedly installed on the travel path of the protrusion (433) so that when the first locking pin (43) is inserted into the locking ring, the protrusion (433) abuts against the micro switch (45).

3. A combination lock box according to claim 1, characterized in that, The housing (1) has a groove (11) on the outside of the mounting plate (41) and a waterproof plug (12) that can open and close relative to the groove (11). A through hole (111) is provided at the bottom of the groove (11). A mechanical lock cylinder (52) is fixedly installed in the through hole (111). A charging interface (112) is also provided at the bottom of the groove (11) away from the through hole (111). The charging interface (112) is electrically connected to the main control circuit board (46). The second locking pin (44) is connected to a second gear (51), which is rotatably connected to the mounting plate (41). The second gear (51) has an arc-shaped groove (512) at one end near the mounting plate (41). The mechanical lock core is fixedly connected to a push rod (521) at one end away from the through hole (111). The push rod (521) is movably inserted into the arc-shaped groove (512). The second gear (51) is fixedly connected to a locking block (511) for fixing the second locking pin (44) at one end away from the mounting plate (41).

4. A combination lock box according to claim 1, characterized in that, The upper end of the box body (1) is fixedly provided with a first locking strip (15) along the periphery, and the upper end of the first locking strip (15) is fixedly provided with a second locking strip (16). The width of the second locking strip (16) is smaller than that of the first locking strip (15). The lower end of the box cover (2) is provided with a sealing groove (24) corresponding to the first locking strip (15) along the periphery. An elastic sealing strip (241) is fixedly connected to the bottom of the sealing groove (24). When the box cover (2) is closed, the first locking strip (15) is embedded in the sealing groove (24), causing the second locking strip (16) to squeeze and deform the elastic sealing strip (241), so that the elastic sealing strip (241) fills the gap between the second locking strip (16) and the sealing groove (24).

5. A combination lock box according to claim 4, characterized in that, The first card strip (15) has arc-shaped guide portions (251) on both sides near the end of the second card strip (16).

6. A combination lock box according to claim 1, characterized in that, Both of the locking ring structures include a fixing part and a reinforcing part. The lower end of the fixing part has a fixing hole for the first locking pin (43) and the second locking pin (44) to be inserted. The reinforcing part is fitted onto the upper end of the fixing part and is fixedly connected to the box cover (2).

7. A combination lock box according to claim 6, characterized in that, The bottom of the box cover (2) is fixedly connected to a reinforcing rib (23), and the reinforcing part is fixedly connected to the reinforcing rib (23).

8. A combination lock box according to claim 1, characterized in that, The box body (1) has two hooks (31) on the outer wall opposite to its hinge point, and the box cover (2) has a retaining seat (32) on the outer wall opposite to its hinge point for each hook (31).

9. A combination lock box according to claim 8, characterized in that, The box (1) is provided with reinforcing ribs (33) on both sides of the hook (31), and the reinforcing ribs (33) extend along the side wall of the box (1) to the bottom of the box (1).

10. A combination lock box according to claim 1, characterized in that, One end of the password input terminal (21) is provided with a fingerprint unlocking module (212), which is electrically connected to the main control circuit board (46).

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