Mechanical digital coded lock

Abstract

The utility model relates to the technical field of locks, and discloses a mechanical digital coded lock which comprises a shell, a coded disc assembly, a lock body assembly and a driven assembly, the coded disc assembly and the lock body assembly can respectively control the driven assembly to control the lock to be opened and closed, a guide pipe unit is further arranged in the shell, and the guide pipe unit comprises a lubricating assembly and a cleaning assembly. The lubricating assembly is used for transporting and spraying lubricating liquid and cleaning liquid to the password disc assembly and the lock body assembly. The control assembly is used for storing liquid and judging the action of the lock body assembly, when the lock body assembly rotates, the control assembly transmits lubricating liquid and cleaning liquid to the password disc assembly and the lock body assembly through the guide pipe unit, and the beneficial effects that a lock cylinder is automatically lubricated, and a password screen is cleaned in real time are achieved; the problems that the lock cylinder is stuck due to long-term use and the safety of a password screen is reduced due to residual fingerprints are solved.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, specifically a mechanical digital combination lock. Background Technology

[0002] Mechanical digital combination locks are widely used in homes, offices, and storage facilities due to their ease of operation. However, with increased use, their drawbacks gradually become apparent. The internal components of the lock cylinder, such as the pins and bolt, rub against each other over time, and the intrusion of dust, moisture, and other impurities can easily cause the lock cylinder to jam. Currently, users need to disassemble the lock to manually lubricate the internal mechanical parts, a complex operation that can damage the lock structure and reduce security with frequent disassembly. On the other hand, the combination screen easily retains fingerprints from users' sweat, oil, and dust, which can be used by criminals to guess the password, seriously threatening the lock's security. A common cleaning method is for users to wipe it regularly with a cloth, but this method is cumbersome, and users often forget to clean the screen for extended periods.

[0003] For example, in the patent CN202121479692.4, "An Electronic Access Control Lock," although the lock cylinder inside the door panel lock can be lubricated by a lubrication mechanism in the middle of the inner groove frame when it gets stuck, without needing to disassemble the electronic lock, this structure has obvious shortcomings. It is only applicable to specific lock models and cannot prevent the lock cylinder from getting stuck in advance. In the immediate scenario where a jam occurs, it cannot solve the problem of the user urgently needing to open the door.

[0004] Therefore, mechanical digital combination locks have revealed many problems that urgently need to be solved during long-term use. While some electronic locks have extendable lubrication mechanisms, their compatibility with mechanical digital combination locks is poor. Furthermore, there are currently no combination locks on the market that integrate a lubrication cylinder with a screen cleaning function. Based on these problems troubling users, there is an urgent need to innovatively design a mechanical digital combination lock to effectively overcome the aforementioned drawbacks and provide users with a more convenient and secure user experience. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, a mechanical digital combination lock is provided, which has the advantages of automatic lubrication of the lock cylinder and real-time cleaning of the combination screen, thus solving the problems of lock cylinder jamming due to long-term use and reduced security due to fingerprint residue on the combination screen.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A mechanical digital combination lock includes a housing, a combination dial assembly, a lock body assembly, and a driven assembly. The combination dial assembly and the lock body assembly are respectively used to control the driven assembly to operate the lock opening and closing. The housing also contains:

[0010] The conduit unit includes a lubrication component and a cleaning component. The lubrication component is used to transport and spray lubricant and cleaning fluid onto the keypad assembly and the lock body assembly, respectively.

[0011] The control unit stores the liquid and controls its flow according to the state of the lock body assembly. When the lock body assembly rotates, the control unit transmits the lubricant and cleaning fluid to the keypad assembly and the lock body assembly through the conduit unit.

[0012] Preferably, the control unit includes a rotating assembly and a cam shaft. The rotating assembly controls the opening and closing of the driven assembly and also drives the lubricating fluid and cleaning fluid to flow into the lubrication assembly and cleaning assembly, respectively. The cam shaft is fixedly mounted on the lock body assembly and has a cam post.

[0013] Preferably, the rotating assembly includes:

[0014] A rotating component, one end of which is in contact with a driven assembly to control the opening and closing of the driven assembly;

[0015] Waste liquid box, which is slidably disposed at the bottom end of the housing, and the function of the hole at the bottom end of the housing is to allow the sprayed lubricating liquid and cleaning liquid to flow into the waste liquid box;

[0016] The first airbag, with the other two sides of the rotating component respectively attached to the protrusion of the convex shaft and the first airbag, facilitates compression when the rotating component deflects;

[0017] The first liquid storage box is slidably disposed on the shell and connects the first airbag and the lubrication assembly, and is used to deliver lubricating fluid when the first airbag is squeezed.

[0018] The second liquid storage box is slidably disposed on the housing and connects the second airbag with the cleaning component, and is used to deliver cleaning fluid when the second airbag is squeezed.

[0019] Preferably, the lock body assembly includes:

[0020] A rotating shaft, one end of which is inserted into the housing and rotatably connected to the housing, and a limit block is fixedly provided on the rotating shaft;

[0021] The key has its bottom end engaged with the other end of the rotating shaft, which drives the convex shaft to rotate.

[0022] Preferably, the lubrication assembly includes:

[0023] A main tube, one end of which is fixedly mounted on the first liquid storage box and the other end of which is mounted at the high end of the shell;

[0024] The liquid sprayer is fixedly installed at one end of the main pipe located at the high point of the housing, and its function is to spray the liquid in the pipe into the housing.

[0025] Preferably, the lock body assembly is further provided with a valve assembly, which is slidably disposed in the hole opened on the limiting block. The lubrication assembly is further provided with a first branch pipe and a second branch pipe respectively fixed at both ends of the valve assembly. The other end of the second branch pipe is provided with a liquid sprayer facing the lock body assembly.

[0026] Preferably, the first branch pipe consists of a horizontal pipe and an inclined pipe. The function of the inclined pipe is to store liquid and prevent liquid from flowing back into the main pipe when the valve assembly closes the pipe.

[0027] Preferably, the lock body assembly includes:

[0028] The slider is slidably positioned inside the hole.

[0029] A flow-blocking pipe is fixedly installed between the first branch pipe and the second branch pipe. The lock body assembly is provided with a guide groove, the function of which is to allow the first branch pipe and the second branch pipe to pass through the lock body assembly.

[0030] A flow-blocking block is slidably disposed inside the flow-blocking tube. The flow-blocking block and the slider are fixedly connected by a support column. An elastic element is provided on the slider near the support column, which is used to rebound when the key is pulled out to connect the first branch pipe and the second branch pipe.

[0031] Preferably, the cleaning component includes:

[0032] The liquid outlet pipe is connected at both ends to the waste liquid box and the password disk assembly, respectively. Its function is to transport the liquid in the password disk assembly to the waste liquid box.

[0033] The liquid inlet pipe has its two ends connected to the second liquid storage box and the keypad assembly, respectively. Its function is to transport the cleaning agent in the second liquid storage box to the keypad assembly.

[0034] Preferably, the password disk assembly includes:

[0035] The keyboard is fixedly mounted on the casing.

[0036] A spray plate is fixedly installed at one end of the keyboard. The spray plate is fixedly connected to the liquid inlet pipe and is used to allow the liquid in the liquid inlet pipe to flow into the spray plate. The spray plate is provided with several holes for spraying liquid.

[0037] A liquid outlet plate is fixedly installed at one end of the keypad at the bottom. The liquid outlet plate is fixedly connected to the liquid outlet pipe. Excess liquid sprayed into the keypad assembly flows through the keypad and the liquid outlet pipe into the waste liquid box.

[0038] A sliding cover is slidably installed at both ends of the spray plate and the outlet plate.

[0039] (III) Beneficial Effects

[0040] Compared with the prior art, this utility model provides a mechanical digital combination lock, which has the following advantages:

[0041] 1. This mechanical digital combination lock is equipped with a conduit unit and a control unit. When the lock body assembly rotates, the control unit can spray the liquid in the first and second liquid reservoirs onto the combination dial assembly and the lock body assembly through the lubrication and cleaning components in the conduit unit. This structure, which combines automatic lubrication and cleaning, can effectively reduce failures caused by component wear and dirt accumulation, extend the service life of the combination lock, and reduce maintenance frequency.

[0042] 2. This mechanical digital combination lock is equipped with a combination dial assembly and a lock body assembly, which can control the driven components to operate the lock's opening and closing. In the lock body assembly, the key and the rotating shaft cooperate through a specific triangular structure to ensure that the key can accurately drive the rotating shaft to rotate when turned. At the same time, the valve assembly can determine the key insertion status and control the fluid flow of the lubrication assembly, so as to avoid lubricant getting on the key during key insertion and reduce key storage costs.

[0043] 3. The spray plate of the keypad assembly is connected to the inlet pipe, which can spray cleaning solution onto the keypad surface. The outlet plate on the keypad is connected to the outlet pipe, which can promptly drain excess liquid into the waste liquid box, preventing liquid from accumulating in the keypad area and affecting the lifespan and sensitivity of the keys. This improves the durability and stability of the entire keypad lock in daily use, providing users with a more reliable user experience. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the housing structure of the mechanical digital combination lock of this utility model.

[0045] Figure 2 This is a schematic diagram of the internal structure of the mechanical digital combination lock of this utility model.

[0046] Figure 3 This is a schematic diagram of the mechanical digital combination lock control unit and the conduit unit of this utility model.

[0047] Figure 4 This is a partial structural diagram of the combination disc assembly and conduit unit of the mechanical digital combination lock of this utility model.

[0048] Figure 5 This is an exploded view of the lock body assembly of the mechanical digital combination lock of this utility model.

[0049] Figure 6 This is a schematic diagram of the mechanical digital combination lock valve assembly of this utility model.

[0050] In the diagram: 1. Shell;

[0051] 2. Keypad assembly; 21. Sliding cover; 22. Keypad; 23. Spray plate; 24. Dispensing plate;

[0052] 3. Lock body assembly; 31. Key; 32. Rotating shaft; 33. Hole; 34. Guide groove; 35. Valve assembly; 351. Slider; 352. Elastic element; 353. Support column; 354. Baffle block; 355. Baffle tube; 36. Limit block;

[0053] 4. Conduit unit; 41. Lubrication assembly; 410. Main pipe; 411. Injector; 412. First branch pipe; 413. Second branch pipe; 42. Cleaning assembly; 421. Outlet pipe; 422. Inlet pipe;

[0054] 5. Control unit; 51. Protruding shaft; 52. Rotating component; 53. Waste liquid box; 54. First airbag; 55. First liquid storage box; 56. Second liquid storage box; 57. Second airbag;

[0055] 6. Slave component. Detailed Implementation

[0056] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0057] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0058] In addition, a fixed connection refers to a connection in which parts or components are fixed and there is no relative movement; a transmission connection refers to a connection in which mechanical motion or torque is transmitted to other working parts through a transmission component; a sliding connection refers to a connection in which two objects are in contact but not fixed and can slide relative to each other; and a rotational connection refers to a connection in which two objects are in contact but not fixed and can rotate relative to each other.

[0059] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0060] Example 1:

[0061] This embodiment provides a mechanical digital combination lock, which has the following technical features.

[0062] Please see Figure 1-6 A mechanical digital combination lock includes a housing 1, a combination dial assembly 2, a lock body assembly 3, and a driven assembly 6. The combination dial assembly 2 and the lock body assembly 3 are respectively used to control the driven assembly 6 to operate the lock opening and closing. The housing 1 also contains:

[0063] The conduit unit 4 includes a lubrication component 41 and a cleaning component 42. The lubrication component 41 is used to transport and spray lubricant and cleaning fluid onto the keypad assembly 2 and the lock body assembly 3, respectively.

[0064] The control unit 5 is used to store liquid and control the flow of liquid according to the state of the lock body assembly 3. When the lock body assembly 3 rotates, the control unit 5 transmits lubricating fluid and cleaning fluid to the keypad assembly 2 and the lock body assembly 3 through the conduit unit 4.

[0065] In an optional embodiment, the control unit 5 includes a rotating assembly and a convex shaft 51. The rotating assembly is used to control the opening and closing of the driven assembly 6 and to drive the lubricating fluid and cleaning fluid to flow into the lubrication assembly 41 and the cleaning assembly 42, respectively. The convex shaft 51 is fixedly mounted on the lock body assembly 3 and has a protruding post.

[0066] In an optional embodiment, the rotating assembly includes:

[0067] Rotating component 52, one end of which is in contact with driven component 6 to control the opening and closing of driven component 6;

[0068] Waste liquid box 53, which is slidably disposed at the bottom end of housing 1, and the hole at the bottom end of housing 1 is used to allow the sprayed lubricating liquid and cleaning liquid to flow into waste liquid box 53;

[0069] The first airbag 54, the other two sides of the rotating member 52 are respectively attached to the protrusion of the convex shaft 51 and the first airbag 54, so as to facilitate the squeezing when the rotating member 52 deflects;

[0070] The first liquid storage box 55 is slidably disposed on the housing 1 and connects the first airbag 54 with the lubrication assembly 41, and is used to deliver lubricating fluid when the first airbag 54 is squeezed.

[0071] The second liquid storage box 56 is slidably disposed on the housing 1 and connects the second airbag 57 with the cleaning component 42. It is used to deliver cleaning fluid when the second airbag 57 is squeezed.

[0072] It should be noted that the rotating part 52 is rotatably connected to the housing 1 by a column, so that the rotating part 52 can rotate with the convex shaft 51;

[0073] One-way valves are provided at the upper end of the first airbag 54 and the second airbag 57 to absorb outside air into the airbag when the airbag rebounds and store it for the next use; one-way valves leading to the first liquid storage box 55 and the second liquid storage box 56 are respectively provided at the connection between the first airbag 54 and the second airbag 57 and the first liquid storage box 55 and the second liquid storage box 56, to squeeze the gas into the first liquid storage box 55 and the second liquid storage box 56 respectively when the airbag is squeezed, and the gas pushes the liquid to flow to the lubrication component 41 and the cleaning component 42 respectively;

[0074] When the key 31 is inserted and drives the rotating shaft 32 to rotate, the rotating shaft 32 synchronously drives the cam shaft 51 to rotate. After the cam shaft 51 rotates, it squeezes the rotating component 52 to deflect. After the rotating component 52 deflects, it squeezes the first airbag 54 and the second airbag 57.

[0075] In an optional embodiment, the lock body assembly 3 includes:

[0076] A rotating shaft 32, one end of which is inserted into the housing 1 and rotatably connected to the housing 1, and a limit block 36 is welded onto the rotating shaft 32;

[0077] The key 31 has its bottom end engaged with the other end of the rotating shaft 32, which drives the convex shaft 51 to rotate.

[0078] In an optional embodiment, the lubrication assembly 41 includes:

[0079] The main tube 410 has one end bolted to the first liquid storage box 55 and the other end set at one end of the housing 1 at a high position.

[0080] The liquid sprayer 411 is bolted to one end of the main pipe 410 located at the high point of the housing 1, and is used to spray the liquid in the pipe into the housing 1.

[0081] In an optional embodiment, the lock body assembly 3 is further provided with a valve assembly 35, which is slidably disposed in the hole 33 opened on the limiting block 36. The lubrication assembly 41 is further provided with a first branch pipe 412 and a second branch pipe 413 respectively fixed at both ends of the valve assembly 35. The other end of the second branch pipe 413 is provided with a sprayer 411 facing the lock body assembly 3.

[0082] In an optional embodiment, the first branch pipe 412 consists of a horizontal pipe and an inclined pipe, the inclined pipe being used to store liquid and prevent liquid backflow into the main pipe 410 when the valve assembly 35 closes the pipe.

[0083] It should be noted that the second branch pipe 413 consists of a horizontal pipe, an inclined pipe, and an arc-shaped pipe;

[0084] When the key 31 is inserted and turned, the gas inside the first airbag 54 is squeezed and pushes the liquid to flow towards the lubrication component 41, and then diverts it to the first branch pipe 412. Since the key 31 is not removed, the baffle pipe 355 remains closed, and the liquid accumulates in the inclined pipe of the first branch pipe 412 due to gravity.

[0085] After the key 31 is removed, the baffle pipe 355 turns into a flow state, allowing the liquid to flow from the first branch pipe 412 into the horizontal pipe of the second branch pipe 413. The liquid slides towards the inclined pipe under the action of gravity. Due to the acceleration of gravity, the liquid flows along the arc pipe towards the sprayer 411 and is finally sprayed onto the surface of the lock body assembly 3 to achieve a lubricating effect.

[0086] In an optional embodiment, the lock body assembly 3 includes:

[0087] Slider 351 is slidably disposed within hole 33;

[0088] A flow-blocking pipe 355 is welded between the first branch pipe 412 and the second branch pipe 413. The lock body assembly 3 is provided with a guide groove 34 for the first branch pipe 412 and the second branch pipe 413 to pass through the lock body assembly 3.

[0089] A flow-blocking block 354 is slidably disposed inside a flow-blocking tube 355. The flow-blocking block 354 and the slider 351 are welded together by a support column 353. An elastic element 352 is provided on one end of the slider 351 near the support column 353, which is used to rebound when the key 31 is pulled out so that the first branch tube 412 and the second branch tube 413 are connected.

[0090] It should be noted that the elastic element 352 can be a spring, an elastic block made of rubber, or an elastic ring made of silicone.

[0091] After key 31 is inserted, the edge of key 31 presses against slider 351, causing baffle block 354 to move toward baffle tube 355, thereby closing baffle tube 355. A baffle limiting block is provided on the side of baffle tube 355 near support column 353, and a protrusion corresponding to the baffle limiting block is provided on the side of baffle block 354 away from support column 353, in order to prevent baffle block 354 from disengaging from baffle tube 355 due to the rebound of elastic element 352, thus preventing pipeline leakage.

[0092] In an optional embodiment, the cleaning component 42 includes:

[0093] The liquid outlet pipe 421 is connected at both ends to the waste liquid box 53 and the password disk assembly 2, respectively, and is used to transport the liquid in the password disk assembly 2 to the waste liquid box 53.

[0094] The liquid inlet pipe 422 is connected at both ends to the second liquid storage box 56 and the password disk assembly 2, respectively, and is used to transport the cleaning agent in the second liquid storage box 56 to the password disk assembly 2.

[0095] In an optional embodiment, the password disk assembly 2 includes:

[0096] Press key 22, and the bolt will connect to housing 1;

[0097] The spray plate 23 is welded to one end of the keypad 22 at a high position. The spray plate 23 is connected to the liquid inlet pipe 422 by bolts, and is used to allow the liquid in the liquid inlet pipe 422 to flow into the spray plate 23. The spray plate 23 is provided with several holes for spraying liquid.

[0098] The liquid outlet plate 24 is welded to one end of the keypad 22 at the bottom. The liquid outlet plate 24 is connected to the liquid outlet pipe 421 by bolts. Excess liquid sprayed into the keypad assembly 2 flows through the keypad 22 and the liquid outlet pipe 421 into the waste liquid box 53.

[0099] The sliding cover plate 21 is slidably disposed at both ends of the spray plate 23 and the outlet plate 24.

[0100] It should be noted that the hollow internal structure of the end of the key 31 that is inserted into the lock cylinder is triangular, and the end of the rotating shaft 32 that is used to insert the key 31 is set to be triangular to fit the key 31, so that the rotating shaft 32 can be rotated when the key 31 is rotated.

[0101] One end of the sprayer 411 is a spray nozzle, which is cone-shaped.

[0102] Working principle:

[0103] When the key 31 is used to unlock, the key 31 is inserted and simultaneously squeezes the slider 351 to move towards the baffle tube 355. After the key 31 is fully inserted, that is, after the baffle block 354 is fully embedded in the baffle tube 355, the key 31 is turned. The rotating part 52 is squeezed and deflected towards the first airbag 54 and the second airbag 57, squeezing the gas into the first liquid storage box 55 and the second liquid storage box 56 respectively. The gas pushes the liquid to flow towards the lubrication component 41 and the cleaning component 42 respectively.

[0104] The liquid flowing to the cleaning component 42 flows to the keypad component 2. The liquid is squeezed and flows to the spray plate 23. It is sprayed onto the keypad 22 through the holes on the spray plate 23 and flows to the outlet plate 24 under the action of gravity. Finally, it flows to the waste liquid box 53 through the outlet plate 24 and the outlet pipe 421.

[0105] The liquid flowing to the lubrication assembly 41 is collected in the inclined pipe through the horizontal pipe of the first branch pipe 412, and the remaining liquid flows to the main pipe. The main pipe is set at a high position inside the housing 1. The liquid is sprayed into the housing 1 through the sprayer 411. The sprayed liquid flows downward due to gravity, so that the key 1 can both control the opening and closing of the lock and simultaneously lubricate the mechanical structure inside the housing.

[0106] Due to the pressure of the key 31, the baffle pipe 355 remains closed, the sprayer 411 on the second branch pipe 413 does not spray, and the lock body assembly 3 is located at a low position in the housing 1 to prevent liquid from being sprayed onto the key 31.

[0107] After the key is removed, the liquid flows through the first branch pipe 412 to the second branch pipe 413. Due to the inclined pipe installed in the second branch pipe 413, the liquid flows rapidly towards the spray nozzle 411 located on the second branch pipe 413 under the acceleration of gravity and is sprayed onto the lock body assembly 3 to achieve the function of delayed lubrication.

[0108] In summary, this mechanical digital combination lock is equipped with a conduit unit 4 and a control unit 5. When the lock body assembly 3 rotates, the control unit 5 can spray the liquid in the first liquid reservoir 55 and the second liquid reservoir 56 onto the combination dial assembly 2 and the lock body assembly 3 respectively through the lubrication component 41 and the cleaning component 42 in the conduit unit 4. This structure, which combines automatic lubrication and cleaning, can effectively reduce failures caused by component wear and dirt accumulation, extend the service life of the combination lock, and reduce the maintenance frequency.

[0109] This mechanical digital combination lock is equipped with a combination dial assembly 2 and a lock body assembly 3, which respectively control the driven assembly 6 to operate the lock's opening and closing. In the lock body assembly 3, the key 31 and the rotating shaft 32 cooperate through a specific triangular structure to ensure that the key can accurately drive the rotating shaft 32 to rotate when it is turned. At the same time, the valve assembly 35 can determine the key 31's insertion status and control the fluid flow of the lubrication assembly 41, so as to avoid lubricant getting on the key 31 during key insertion and reduce the key 31's storage cost.

[0110] The spray plate 23 of the keypad assembly 2 is connected to the inlet pipe 422, which can spray cleaning fluid onto the surface of the keypad 22. The outlet plate 24 at the lower end of the keypad 22 is connected to the outlet pipe 421, which can promptly discharge excess liquid to the waste liquid box 53, preventing liquid from accumulating in the keypad area and affecting the lifespan and sensitivity of the keys. This improves the durability and stability of the entire keypad lock in daily use, providing users with a more reliable user experience.

[0111] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0112] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mechanical digital combination lock, comprising a housing (1), a combination dial assembly (2), a lock body assembly (3), and a driven assembly (6), wherein the combination dial assembly (2) and the lock body assembly (3) are respectively used to control the driven assembly (6) to operate the lock opening and closing, characterized in that, The housing (1) also contains: The conduit unit (4) includes a lubrication assembly (41) and a cleaning assembly (42), wherein the lubrication assembly (41) is used to transport and spray lubricant and cleaning fluid onto the keypad assembly (2) and the lock body assembly (3), respectively; The control unit (5) is used to store liquid and control the flow of liquid according to the state of the lock body assembly (3). When the lock body assembly (3) rotates, the control unit (5) transmits lubricating fluid and cleaning fluid to the keypad assembly (2) and the lock body assembly (3) through the conduit unit (4).

2. The mechanical digital combination lock according to claim 1, characterized in that, The control unit (5) includes a rotating component and a cam (51). The rotating component is used to control the opening and closing of the driven component (6) and to drive the lubricant and cleaning fluid to flow into the lubrication component (41) and the cleaning component (42) respectively. The convex shaft (51) is fixedly mounted on the lock body assembly (3), and a convex post is provided on the convex shaft (51).

3. A mechanical digital combination lock according to claim 2, characterized in that, The rotating assembly includes: Rotating component (52), one end of which is in contact with driven component (6); Waste liquid box (53), the waste liquid box (53) is slidably disposed at the bottom end of the housing (1), and the hole at the bottom end of the housing (1) is used to allow the sprayed lubricating liquid and cleaning liquid to flow into the waste liquid box (53). The first airbag (54) has two sides of the other end of the rotating member (52) respectively attached to the protrusion of the convex shaft (51) and the first airbag (54); The first liquid storage box (55) is slidably disposed in the housing (1) and connects the first airbag (54) and the lubrication assembly (41). The second liquid storage box (56) is slidably disposed inside the housing (1) and connects the second airbag (57) with the cleaning component (42).

4. A mechanical digital combination lock according to claim 3, characterized in that, The lock body assembly (3) includes: A rotating shaft (32) is inserted into the housing (1) and rotatably connected to the housing (1). A limit block (36) is fixedly provided on the rotating shaft (32). The key (31) is engaged with the other end of the rotating shaft (32) at its bottom, which drives the convex shaft (51) to rotate.

5. A mechanical digital combination lock according to claim 4, characterized in that, The lubrication assembly (41) includes: The main tube (410) has one end fixedly mounted on the first liquid storage box (55) and the other end mounted at the high end of the shell (1); The liquid sprayer (411) is fixedly installed at one end of the main pipe (410) at the height of the housing (1) and is used to spray the liquid in the pipe into the housing.

6. A mechanical digital combination lock according to claim 5, characterized in that, The lock body assembly (3) is also provided with a valve assembly (35), which is slidably disposed in the hole (33) opened on the limiting block (36). The lubrication assembly (41) is also provided with a first branch pipe (412) and a second branch pipe (413) respectively fixed at both ends of the valve assembly (35). The other end of the second branch pipe (413) is provided with a sprayer (411) facing the lock body assembly (3).

7. A mechanical digital combination lock according to claim 6, characterized in that, The first branch pipe (412) consists of a horizontal pipe and an inclined pipe, the inclined pipe being used to store liquid and prevent liquid backflow into the main pipe (410) when the valve assembly (35) closes the pipe.

8. A mechanical digital combination lock according to claim 7, characterized in that, The lock body assembly (3) includes: The slider (351) is slidably set inside the hole (33); A flow-blocking pipe (355) is fixedly disposed between the first branch pipe (412) and the second branch pipe (413). The lock body assembly (3) is provided with a guide groove (34) for the first branch pipe (412) and the second branch pipe (413) to pass through the lock body assembly (3). A flow-blocking block (354) is slidably disposed inside a flow-blocking tube (355). The flow-blocking block (354) and the slider (351) are fixedly connected by a support column (353). An elastic element (352) is provided on one end of the slider (351) near the support column (353) for rebounding when the key (31) is pulled out to connect the first branch tube (412) and the second branch tube (413).

9. A mechanical digital combination lock according to claim 2, characterized in that, The cleaning component (42) includes: The liquid outlet pipe (421) is connected at both ends to the waste liquid box (53) and the password disk assembly (2), respectively. The liquid inlet pipe (422) is connected at both ends to the second liquid storage box (56) and the password disk assembly (2), respectively.

10. A mechanical digital combination lock according to claim 9, characterized in that, The password disk assembly (2) includes: The keypad (22) is fixedly mounted on the housing (1); The spray plate (23) is fixedly installed at one end of the keypad (22) at a high position. The spray plate (23) is fixedly connected to the liquid inlet pipe (422). The spray plate (23) has several holes. The liquid outlet plate (24) is fixedly installed at one end of the keypad (22) at a low position. The keypad (22) is fixedly connected to the liquid outlet pipe (421). Excess liquid sprayed into the keypad assembly (2) flows through the keypad (22) and the liquid outlet pipe (421) into the waste liquid box (53). The sliding cover plate (21) is slidably set at both ends of the spray plate (23) and the outlet plate (24).

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