Intelligent padlock with anti-blocking function

Abstract

The utility model discloses a kind of intelligent padlocks with anti-stalling function, relating to intelligent padlock technical field, including shell, still including separable setting in the side part of shell lock beam, for locking lock beam locking mechanism, for detecting whether the signal contact cover of lock beam is inserted shell, two signal contact covers are respectively separable with the both ends of lock beam contact, controller is arranged in shell, locking mechanism and two signal contact covers are respectively electrically connected with controller.The utility model provides a kind of intelligent padlocks with anti-stalling function, by oil injection hole is injected into lubricating oil in oil groove on linkage frame, while lubricating oil lubricates screw rod, by drain port one, drain port two and drain port three respectively on locking block, containing cover, stabilizer rod simultaneously lubricate multiple places, effectively prevent the stall of intelligent padlock, by the setting of oil storage cavity, for oil channel long-acting oil supply, further avoid the stall of intelligent padlock, the use of intelligent padlock is more stable and reliable.

Description

Technical Field

[0001] This utility model relates to the field of smart padlock technology, specifically to a smart padlock with anti-blocking and anti-rotation function. Background Technology

[0002] As a common physical security device, padlocks are increasingly being upgraded to intelligent systems. Smart padlocks are intelligent locks that combine IoT technology with traditional padlock structures, using electronic control, biometrics, or wireless communication to achieve opening and closing functions, offering both physical protection and digital management capabilities. Traditional smart padlocks typically use a motor-driven locking mechanism for automatic opening and closing.

[0003] Smart padlocks still have some shortcomings in practical use. After long-term use, the frictional resistance of the internal moving parts increases, making it difficult for the motor's output torque to drive the locking block to complete its stroke, leading to stalling. This not only causes unlocking failure but can also burn out the motor or damage the transmission components. Existing smart padlocks have a high risk of stalling, resulting in poor reliability. This solution addresses this technical problem. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an intelligent padlock with anti-blocking function. Lubricating oil is injected into the oil groove on the linkage frame through the oil injection hole. While lubricating the screw, the oil simultaneously lubricates the locking block, the receiving sleeve, and the stabilizing rod through oil drain ports one, two, and three, effectively preventing the intelligent padlock from blocking. The oil storage chamber provides a long-term oil supply to the oil passage, further preventing the intelligent padlock from blocking, making the use of the intelligent padlock more stable and reliable.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an intelligent padlock with anti-blocking function, including a housing, a lock beam detachably disposed on the side of the housing, a locking mechanism for locking the lock beam, and a signal contact sleeve for detecting whether the lock beam is inserted into the housing. The two signal contact sleeves are detachably in contact with both ends of the lock beam. A controller is disposed inside the housing, and the locking mechanism and the two signal contact sleeves are electrically connected to the controller.

[0006] The locking beam has a locking groove on its side. The locking mechanism includes two bearing blocks on the housing, two locking blocks slidably mounted on the bearing blocks, a linkage frame for driving the two locking blocks to slide, a screw threaded to the linkage frame, and a reduction motor for driving the screw to rotate. The linkage frame has an internal thread on its side, and the screw is connected to the internal thread of the linkage frame. Both ends of the linkage frame are slidably in contact with one end of the locking block, and the other ends of the two locking blocks are separably mounted in the locking groove.

[0007] The linkage frame has an oil passage inside, and an oil filling groove connected to the inlet of the oil passage is provided on the side of the linkage frame. An oil drain port is provided on the side of both ends of the linkage frame near the locking block. The oil passage is connected to the oil drain port and the internal thread respectively. An oil storage cavity connected to the oil passage is also provided on the side of the linkage frame.

[0008] The bottom side of the support block is provided with a guide groove, and the bottom of the locking block is provided with a slider. The slider is slidably disposed in the guide groove. A tension spring is provided between the locking block and the support block. One end of the tension spring is connected to the guide groove, and the other end of the tension spring is connected to the side of the slider.

[0009] The other end of the locking block is a wedge-shaped surface, and one side of the end of the linkage frame is provided with a wedge-shaped surface corresponding to the locking block. The oil drain port is provided on the wedge-shaped surface.

[0010] The housing contains stabilizing rods on both sides of the screw. The stabilizing rods slide through the side of the linkage frame, and both ends of the stabilizing rods are fixedly mounted on the housing.

[0011] The housing is provided with a receiving sleeve for accommodating the geared motor, and the other end of the linkage frame is in sliding contact with the side of the receiving sleeve.

[0012] On the other side of the linkage frame, there is a second oil drain port that communicates with the oil passage, and the second oil drain port is oriented toward the receiving sleeve.

[0013] A sliding hole is provided through the side of the linkage frame, and the stabilizer rod is slidably disposed in the sliding hole. An oil drain port three communicating with the oil passage is provided in the sliding hole.

[0014] The oil filling groove is an elongated groove, and the housing is provided with an oil filling hole that communicates with the elongated groove.

[0015] The side of the housing is provided with a through hole that allows the locking beam to pass through, and a wear-resistant bushing is provided in the through hole to reduce the friction of the locking beam.

[0016] The side of the lock beam is provided with a cover to prevent dirt from entering the through hole.

[0017] One or more technical solutions proposed in this application have at least the following technical effects:

[0018] (1) Lubricating oil is injected into the oil groove on the linkage frame through the oil injection hole. While the lubricating oil lubricates the screw, the locking block, the receiving sleeve and the stabilizing rod are lubricated at multiple points through the oil drain port 1, oil drain port 2 and oil drain port 3 respectively. This effectively prevents the smart padlock from blocking. The oil storage chamber provides long-term oil supply to the oil passage, further avoiding the blocking of the smart padlock. The use of the smart padlock is more stable and reliable.

[0019] (2) By setting the wear-resistant bushing, the friction between the through hole and the side of the lock beam is reduced, and the lock beam is prevented from getting stuck in the through hole. By setting the cover, dirt such as dust and mud is prevented from entering the lock body through the through hole and affecting the moving parts such as the screw and slider, effectively preventing the smart padlock from getting stuck and blocked.

[0020] (3) By executing the anti-blocking algorithm through the controller, the geared motor can be rotated forward and backward multiple times to successfully complete the unlocking and locking operations, effectively removing dust, iron filings and other impurities that may hinder the rotation of the geared motor, thus improving the operational stability of the lock. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall internal structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the locking mechanism of this utility model;

[0024] Figure 3 This is a schematic diagram of the internal structure of the linkage frame of this utility model. Figure 1 ;

[0025] Figure 4 This is a schematic diagram of the external structure of the linkage frame of this utility model;

[0026] Figure 5 This is a schematic diagram of the locking block of this utility model;

[0027] Figure 6 This is a schematic diagram of the connection structure between the locking beam and the locking block of this utility model;

[0028] Figure 7 This is a schematic diagram of the structure of the shell of this utility model.

[0029] Explanation of icon numbers:

[0030] 1. Housing; 11. Oil injection hole; 12. Through hole; 13. Wear-resistant bushing; 2. Locking beam; 21. Locking groove; 22. Protective cover; 3. Locking mechanism; 31. Bearing block; 311. Guide groove; 32. Locking block; 321. Slider; 33. Linkage frame; 331. Internal thread; 332. Oil passage; 333. Oil injection groove; 334. Oil drain port one; 335. Oil drain port two; 336. Sliding hole; 337. Oil drain port three; 338. Oil storage chamber; 34. Screw; 35. Gear motor; 36. Tension spring; 37. Stabilizer bar; 38. Receiving sleeve; 4. Signal contact sleeve.

[0031] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

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

[0033] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0034] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are 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 with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0035] In one embodiment, see Figures 1-7A smart padlock with anti-blocking function includes a housing 1, a lock beam 2 detachably disposed on the side of the housing 1, a locking mechanism 3 for locking the lock beam 2, and a signal contact sleeve 4 for detecting whether the lock beam 2 is inserted into the housing 1. The two signal contact sleeves 4 are detachably in contact with both ends of the lock beam 2. A controller is provided inside the housing 1, and the locking mechanism 3 and the two signal contact sleeves 4 are electrically connected to the controller.

[0036] Furthermore, the side of the locking beam 2 is provided with a locking groove 21, and the locking mechanism 3 includes two bearing blocks 31 provided on the housing 1, two locking blocks 32 respectively slidably provided on the bearing blocks 31, a linkage frame 33 for driving the two locking blocks 32 to slide, a screw 34 threadedly connected to the linkage frame 33, and a reduction motor 35 for driving the screw 34 to rotate. The side of the linkage frame 33 is provided with an internal thread 331, and the screw 34 is connected to the internal thread 331 of the linkage frame 33. The two ends of the linkage frame 33 are respectively in sliding contact with one end of the locking block 32, and the other ends of the two locking blocks 32 are separably provided in the locking groove 21.

[0037] It is understandable that the linkage frame 33 has an oil passage 332 inside, and an oil filling groove 333 connected to the inlet of the oil passage 332 is provided on the side of the linkage frame 33. An oil drain port 334 is provided on the side of the linkage frame 33 near the locking block 32 at both ends. The oil passage 332 is connected to the oil drain port 334 and the internal thread 331 respectively. An oil storage cavity 338 connected to the oil passage 332 is also provided on the side of the linkage frame 33. A sponge for storing lubricating oil is provided in the oil storage cavity 338. The sponge absorbs part of the lubricating oil to prevent excessive lubricating oil from overflowing.

[0038] Furthermore, a guide groove 311 is provided on the bottom side of the support block 31, and a slider 321 is provided on the bottom of the locking block 32. The slider 321 is slidably disposed in the guide groove 311. A tension spring 36 is provided between the locking block 32 and the support block 31. One end of the tension spring 36 is connected to the guide groove 311, and the other end of the tension spring 36 is connected to the side of the slider 321. The locking block 32 is slid in the guide groove 311 by the slider 321, and the locking block 32 is reset by the tension spring 36.

[0039] It is understandable that the other end of the locking block 32 is a wedge-shaped surface, and one side of the end of the linkage frame 33 is provided with a wedge-shaped surface corresponding to the locking block 32, and the oil drain port 334 is provided on the wedge-shaped surface.

[0040] In one embodiment, a stabilizing rod 37 is provided on both sides of the screw 34 inside the housing 1. The stabilizing rod 37 slides through the side of the linkage frame 33, and the two ends of the stabilizing rod 37 are fixedly set on the housing 1. By setting the stabilizing rod 37, the operation of the linkage frame 33 is more precise, the screw 34 is prevented from being deformed by force, and the operation of the linkage frame 33 is stable and reliable.

[0041] Furthermore, a receiving sleeve 38 for accommodating the geared motor 35 is provided inside the housing 1, and the other side of the end of the linkage frame 33 slides in contact with the side of the receiving sleeve 38.

[0042] On the other side of the linkage frame 33, there is an oil drain port 335 that is connected to the oil passage 332, and the oil drain port 335 is oriented toward the receiving sleeve 38.

[0043] A sliding hole 336 is provided through the side of the linkage frame 33, and the stabilizer bar 37 is slidably disposed in the sliding hole 336. An oil drain port 337 communicating with the oil passage 332 is provided in the sliding hole 336.

[0044] In one embodiment, atomized lubricating oil is sprayed into the oil injection hole 11. The atomized lubricating oil enters the internal thread 331, oil outlet 1 334, oil outlet 2 335 and oil outlet 337 along the oil passage 332 to lubricate the various components that need lubrication.

[0045] In another embodiment, an oil rope is provided in the oil channel 332. The oil rope has multiple free ends. One of the free ends of the oil rope is connected to the sponge in the oil storage cavity 338. The other free ends of the oil rope are respectively located on the inner edge of the oil outlet 334, the oil outlet 335, the oil outlet 337, and the internal thread 331. The lubricating oil in the sponge is guided to each part that needs lubrication through the capillary action of the oil rope.

[0046] The oil filling groove 333 is an elongated groove. The housing 1 is provided with an oil filling hole 11 that communicates with the elongated groove. A rubber plug for sealing is provided at the oil filling hole 11. The rubber plug is detachably connected to the oil filling hole 11.

[0047] The specific working process of this utility model:

[0048] In use, the locking beam 2 is inserted into the wear-resistant bushing 13 through the through hole 12 of the housing 1 until both ends of the locking beam 2 contact the signal contact sleeve 4. At this time, the signal contact sleeve 4 forms a passage through the controller, and the controller controls the reduction motor 35 to run. The reduction motor 35 drives the screw 34 to rotate. The screw 34 drives the linkage frame 33 to slide along the stabilizer 37. The linkage frame 33 drives the two contact blocks to slide along the bearing block 31 through contact with the locking block 32 on one side. One end of the two locking blocks 32 is embedded in the locking groove 21 of the locking beam 2, completing the fixing of the locking beam 2. The reduction motor 35 stops, thereby realizing the locking operation.

[0049] When unlocking is required, a command is sent to the controller via external input methods such as Bluetooth, password, or fingerprint. The controller starts the geared motor 35 to reverse, which drives the screw 34 to rotate. The screw 34 drives the linkage frame 33 to move away from the locking block 32. Under the tension of the tension spring 36, the locking block 32 moves away from the locking groove 21 of the lock beam 2. At this time, the lock beam 2 can be separated from the housing 1 by holding the lock beam 2, thus completing the unlocking operation.

[0050] Lubricating oil is injected into the oil groove 333 on the linkage frame 33 through the oil injection hole 11. The lubricating oil enters the oil storage chamber 338 along the oil passage 332. The oil storage chamber 338 is equipped with a sponge to store a certain amount of lubricating oil. The lubricating oil in the oil storage chamber 338 enters the internal thread 331, oil drain port 1 334, oil drain port 2 335, and oil drain port 337 in sequence along the oil passage 332. The lubricating oil in the internal thread 331 lubricates the screw 34, and the lubricating oil discharged from oil drain port 1 334... Lubrication is applied between the locking block 32 and the linkage frame 33. Then, lubricating oil enters the guide groove 311 to lubricate between the slider 321 and the guide groove 311. The lubricating oil discharged from the second oil outlet 335 lubricates between the linkage frame 33 and the receiving sleeve 38. The lubricating oil discharged from the third oil outlet 337 lubricates the stabilizing rod 37 in the sliding hole 336. This achieves multi-point lubrication of the locking mechanism 3, avoiding the smart padlock from becoming stuck due to insufficient lubrication. The smart padlock has a good anti-stalling effect.

[0051] Lubricating oil is injected into the oil groove 333 on the linkage frame 33 through the oil injection hole 11. While lubricating the screw 34, the lubricating oil also lubricates the locking block 32, the receiving sleeve 38, and the stabilizing rod 37 through the oil drain port 1 334, the oil drain port 2 335, and the oil drain port 337, respectively. This effectively prevents the smart padlock from becoming stuck. The oil storage chamber 338 provides a long-term oil supply to the oil passage 332, further preventing the smart padlock from becoming stuck. The smart padlock is now more stable and reliable in use.

[0052] When the geared motor 35 stalls due to jamming during unlocking or locking, the controller detects that the power or current output of the geared motor 35 has increased and exceeded the set value. The software control system automatically activates the anti-stall strategy. The system first controls the geared motor 35 to rotate in reverse. The reverse rotation time is precisely set to ensure effective removal of dust, iron filings, and other impurities that may obstruct the rotation of the geared motor 35, while simultaneously attempting to correct any obstruction caused by the misalignment of the screw 34. After the reverse rotation is complete, the geared motor 35 immediately rotates in the forward direction to attempt to unlock or lock again. If the first attempt fails to resolve the stalling problem, the system will automatically repeat the reverse rotation → forward rotation process multiple times. More specifically, the anti-stall algorithm is: detect stall → geared motor 35 reverses for 0.5 seconds → rotates in the forward direction for 0.5 seconds → cycle 3 times → alarm if still unsuccessful. This software algorithm improves the operational stability of the lock under complex assembly conditions.

[0053] By executing an anti-stall algorithm through the controller, the geared motor 35 can rotate in both directions multiple times to successfully complete the locking and unlocking operations. This effectively removes impurities such as dust and iron filings that may hinder the rotation of the geared motor 35, thus improving the operational stability of the lock.

[0054] In another embodiment, the side of the housing 1 is provided with a through hole 12 that allows the locking beam 2 to pass through, and a wear-resistant bushing 13 for reducing the friction of the locking beam 2 is provided in the through hole 12. The wear-resistant bushing 13 is made of polytetrafluoroethylene.

[0055] The side of the locking beam 2 is provided with a cover 22 to prevent dirt from entering the through hole 12.

[0056] The wear-resistant bushing 13 reduces the friction between the through hole 12 and the side of the lock beam 2, preventing the lock beam 2 from getting stuck in the through hole 12. The cover 22 prevents dust, mud, water and other contaminants from entering the lock body through the through hole 12 and affecting moving parts such as the screw 34 and slider 321, effectively preventing the smart padlock from getting stuck and blocked.

[0057] Technical features not described in detail in this solution are based on conventional operations and general understanding of those skilled in the art, and are therefore not elaborated upon here. Technical features not described in this utility model can be implemented using existing technology, and will not be repeated here. Of course, the above description is not intended to limit this utility model, nor is it limited to the examples given above. Any changes, modifications, additions, or substitutions made by those skilled in the art within the scope of this utility model should also fall within the protection scope of this utility model.

[0058] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A smart padlock with anti-blocking function, comprising a housing (1), characterized in that, It also includes a lock beam (2) that can be detachably disposed on the side of the housing (1), a locking mechanism (3) for locking the lock beam (2), and a signal contact sleeve (4) for detecting whether the lock beam (2) is inserted into the housing (1). The two signal contact sleeves (4) are detachably contacting the two ends of the lock beam (2). A controller is provided inside the housing (1). The locking mechanism (3) and the two signal contact sleeves (4) are electrically connected to the controller. The locking beam (2) has a locking groove (21) on its side. The locking mechanism (3) includes two bearing blocks (31) on the housing (1), two locking blocks (32) slidably disposed on the bearing blocks (31), a linkage frame (33) for driving the two locking blocks (32) to slide, a screw (34) threadedly connected to the linkage frame (33), and a reduction motor (35) for driving the screw (34) to rotate. The linkage frame (33) has an internal thread (331) on its side. The screw (34) is connected to the internal thread (331) of the linkage frame (33). The two ends of the linkage frame (33) are slidably contacted with one end of the locking block (32). The other ends of the two locking blocks (32) are detachably disposed in the locking groove (21). The linkage frame (33) is provided with an oil passage (332) inside. The side of the linkage frame (33) is provided with an oil filling groove (333) that communicates with the inlet of the oil passage (332). The two ends of the linkage frame (33) are provided with an oil drain port (334) on the side near the locking block (32). The oil passage (332) is connected to the oil drain port (334) and the internal thread (331) respectively. The side of the linkage frame (33) is also provided with an oil storage cavity (338) that communicates with the oil passage (332).

2. The smart padlock with anti-blocking function according to claim 1, characterized in that, The bottom side of the support block (31) is provided with a guide groove (311), and the bottom of the locking block (32) is provided with a slider (321). The slider (321) is slidably disposed in the guide groove (311). A tension spring (36) is provided between the locking block (32) and the support block (31). One end of the tension spring (36) is connected to the guide groove (311), and the other end of the tension spring (36) is connected to the side of the slider (321).

3. The intelligent padlock with anti-blocking function according to claim 2, characterized in that, The other end of the locking block (32) is a wedge-shaped surface, and one side of the end of the linkage frame (33) is provided with a wedge-shaped surface corresponding to the locking block (32), and the oil drain port (334) is provided on the wedge-shaped surface.

4. The intelligent padlock with anti-blocking function according to claim 2, characterized in that, The housing (1) has stabilizing rods (37) respectively provided on both sides of the screw (34). The stabilizing rods (37) slide through the side of the linkage frame (33), and the two ends of the stabilizing rods (37) are fixedly set on the housing (1).

5. The intelligent padlock with anti-blocking function according to claim 3, characterized in that, The housing (1) is provided with a receiving sleeve (38) for accommodating the geared motor (35), and the other side of the end of the linkage frame (33) slides in contact with the side of the receiving sleeve (38).

6. The intelligent padlock with anti-blocking function according to claim 5, characterized in that, On the other side of the linkage frame (33), there is an oil drain port two (335) that communicates with the oil passage (332), and the oil drain port two (335) is positioned towards the receiving sleeve (38).

7. The intelligent padlock with anti-blocking function according to claim 4, characterized in that, The side of the linkage frame (33) is provided with a sliding hole (336), the stabilizer rod (37) is slidably disposed in the sliding hole (336), and the sliding hole (336) is provided with an oil drain port (337) that communicates with the oil passage (332).

8. The intelligent padlock with anti-blocking function according to claim 1, characterized in that, The oil filling groove (333) is an elongated groove, and the housing (1) is provided with an oil filling hole (11) that communicates with the elongated groove.

9. The intelligent padlock with anti-blocking function according to claim 5, characterized in that, The side of the housing (1) is provided with a through hole (12) that allows the lock beam (2) to pass through, and a wear-resistant bushing (13) for reducing the friction of the lock beam (2) is provided in the through hole (12).

10. The intelligent padlock with anti-blocking function according to claim 9, characterized in that, The side of the lock beam (2) is provided with a cover (22) to prevent dirt from entering the through hole (12).

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