Anti-collision smart padlock

Abstract

The invention discloses an anti-collision smart padlock. A torsion spring is arranged in an unlocking wheel with an eccentric convex column, and a relative rotation space of a certain angle is provided between the unlocking wheel and the motor shaft of a motor to make the torsion spring generate prestress. In this way, when a user wants to lock the door, no matter he first drives the locking mechanism to the locking position by means of NFC or Bluetooth of a mobile phone and then presses the locking ring to lock it, or he first presses down the locking ring and drives the locking mechanism to the locking position to lock it, the locking can be smoothly achieved, and there is no need to hold down the locking ring with one hand and then release the hand when the mechanism is driven to the locking position, thereby satisfying people's different usage habits and greatly improving people's usage experience. In addition, in the locked state, the eccentric convex column of the unlocking wheel can be moved to the blocking position of the anti-collision zone under the action of the torsion spring stress to prevent criminals from unlocking the door by collision. Therefore, the structure of the invention is more reasonable, the anti-theft performance is stronger, the usage experience effect is good, and it is more in line with people's different usage habits.

Description

Technical Field

[0001] The invention relates to an intelligent padlock. Background Art

[0002] Currently, most smart padlocks are mainly divided into three categories: one is a smart padlock with a built-in battery; one is a padlock without an internal battery and powered by an electronic key; and the other is a smart padlock without an internal battery and powered by a dedicated wireless key.

[0003] At present, most waterproof padlocks that can be directly and quickly pressed and locked without electronic keys mostly use a single lock tongue mechanism for the unlocking part. The main difference between this structure and the double lock tongue or double pin method is that the structure is simple, suitable for waterproof use, and the technology is also very mature; however, the anti-collision protection of this structure is based on the principle of using spring force to overcome the inertia of the lock tongue during collision. To effectively prevent collision, the lock tongue spring force must be large; however, in smart padlocks, motors or electromagnets are used to control the movement of the lock tongue. Due to the limited power of the motor or electromagnet, if the spring force is too large, it will cause jamming and cannot be unlocked normally; and if the spring force is too small, it will cause a safety hazard that it can be unlocked by collision. In order to solve the risk of single-tongue locks being easily knocked open, recently, a structure has appeared on the market that requires authorization and long-term pressing of the lock ring to lock until the locking is completed and the lock tongue is supported by the locking mechanism to prevent it from being knocked open. However, this method is not suitable for people's usage habits and has locking limitations when used, especially on passive NFC locks. The application experience is even worse.

[0004] In addition, most of the current smart padlocks are not properly sealed and it is difficult to reach the IP67 protection level. When unlocking the padlock in the case of rain, it is easy to cause water damage. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide an anti-collision smart padlock which has a reasonable structure, stronger anti-theft performance, and is more in line with people's different usage habits and has a good usage experience.

[0006] In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions:

[0007] A smart padlock that prevents collision and opening comprises a lock body, a lock ring, a lock tongue, a lock tongue spring, a lock ring spring, a control circuit, an energy storage capacitor or a battery, a lock tongue state sensor and a motor arranged in the lock body, and an antenna arranged on the lock body. The motor drives the lock tongue to slide horizontally away from the locking opening of the lock ring through an unlocking wheel with an eccentric boss to unlock the lock; a boss movable groove for the boss to fall into is provided on the lock tongue; a torsion spring is provided in the unlocking wheel; after the unlocking wheel is sleeved on the motor shaft of the motor, the exposed force-bearing end of the torsion spring is force-connected with the motor shaft of the motor; the insertion hole of the unlocking wheel is matched with the motor shaft of the motor in radial clearance.

[0008] In the improvement scheme of the above-mentioned anti-collision smart padlock, the groove shape of the movable groove of the convex column is bent, and it includes a longitudinal groove and a transverse groove.

[0009] In the improved solution of the above-mentioned anti-collision smart padlock, the groove shape of the movable groove of the convex column is a linear transverse groove.

[0010] In the improved scheme for the above-mentioned anti-collision smart padlock, the motor shaft is in a "cross" shape; a plurality of protrusions for applying force to the motor shaft are provided in the insertion hole of the unlocking wheel, and the angle between adjacent protrusions is larger than the part of the motor shaft clamped by them.

[0011] In the improved scheme of the above-mentioned anti-collision smart padlock, the lock ring is provided with a rainproof structure at the end close to the locking port, which includes a lock ring sealing sleeve, a rainproof cap and a sealing ring that can be relatively movably sleeved on the outside of the lock ring, the lower end of the lock ring sealing sleeve is tightly fixed to the lock body, the upper end is exposed to the lock body and a sealing ring is provided on the inner wall of the upper end; the rainproof cap is a hollow tube, the upper end of which is tightly fitted on the lock ring, and the lower end covers the exposed part of the lock ring sealing sleeve.

[0012] Compared with the prior art, the present invention has the following beneficial effects: since a torsion spring is provided in the unlocking wheel with an eccentric boss, and a relative rotation space of a certain angle is provided between the unlocking wheel and the motor shaft of the motor to generate prestress in the torsion spring, when the user wants to lock the door, no matter the user first drives the locking mechanism to the locking position through NFC or Bluetooth (including but not limited to) of the mobile phone, and then presses the locking ring to lock; or first presses down the locking ring and drives the locking mechanism to the locking position to lock, the locking can be smoothly achieved, and there is no need to hold the locking ring with one hand, and then release the hand when the mechanism is driven to the locking position, thereby satisfying people's different usage habits and greatly improving people's usage experience; in addition, in the locked state, the eccentric boss of the unlocking wheel can be moved to the blocking position of the anti-collision zone under the action of the torsion spring stress to prevent criminals from impacting and unlocking the door. Therefore, the structure of the present invention is more reasonable, the anti-theft performance is stronger, the usage experience effect is good, and it is more in line with people's different usage habits.

[0013] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional schematic diagram of an embodiment of the present invention;

[0015] Figure 2 The structure of the embodiment of the present invention is shown in FIG. Figure 1 (Locked state);

[0016] Figure 3 The structure of the embodiment of the present invention is shown in FIG. Figure 2 (Unlocked state);

[0017] Figure 4 yes Figure 3 BB section view;

[0018] Figure 5 It is a schematic diagram of the state between the lock ring, the lock tongue and the unlocking wheel when the padlock is ready to be locked but the lock ring is not pressed down;

[0019] Figure 6 It is a schematic diagram of the state between the lock ring, the lock tongue and the unlocking wheel when the padlock is in the locked state;

[0020] Figure 7 This is the disassembly diagram of the motor, lock tongue and unlocking wheel Figure 1 ;

[0021] Figure 8 This is the disassembly diagram of the motor, lock tongue and unlocking wheel Figure 2 ;

[0022] Fig. 9 It is a three-dimensional schematic diagram of another embodiment of the lock tongue. DETAILED DESCRIPTION

[0023] The present invention is a smart padlock that can be opened without collision. Figures 1 to 4As shown, it includes a lock body 1, a lock ring 2, a lock tongue 3, a lock tongue spring 4, a lock ring spring 5, a control circuit 6, an energy storage capacitor or a battery 7, a lock tongue state sensor 8 and a motor 9 arranged in the lock body 1, and an antenna 10 arranged on the lock body 1. These structures are basically the same as the structures of the smart padlock that currently uses spring reset to lock and motor-driven unlocking (for example, the energy storage capacitor or battery 7 provides energy for the control circuit and the motor; the state sensor 8 is connected to the control circuit 6 for detecting the unlocking state; the lock ring spring 5 is used to pop up the lock ring when unlocking; the antenna 10 is used to receive external wireless power supply and data communication NFC or wireless energy transmission antenna), and therefore will not be described in detail. The difference is that: the motor 9 drives the lock tongue 3 to slide horizontally away from the locking opening 21 of the lock ring 2 through the unlocking wheel 20 with an eccentric boss 201 to unlock; the lock tongue 3 is provided with a boss movable groove 31 for the boss 201 to fall into; a torsion spring 30 is provided in the unlocking wheel 20; after the unlocking wheel 20 is sleeved on the motor shaft 91 of the motor 9, the exposed force-bearing end 301 of the torsion spring 30 is force-connected with the motor shaft 91 of the motor 9; when the lock ring 2 is to be locked, the motor 9 first rotates a certain angle to allow the torsion spring 30 to generate a certain torque while driving After the eccentric boss 201 rotates, it rotates from the unlocking position 311 of the boss movable groove 31 to the anti-collision position 312. For this purpose, the insertion hole 202 of the unlocking wheel 20 and the motor shaft 91 of the motor 9 are matched in radial clearance (that is, the insertion hole and the motor shaft have a certain looseness in the rotation direction to form a relative rotation space of a certain angle) to make the torsion spring generate prestress; when the locking ring 2 is to be unlocked, the motor 9 drives the boss 201 of the unlocking wheel 20 to rotate from the anti-collision position 312 of the boss movable groove 31 to the unlocking position 311 and act on the unlocking position 311.

[0024] The control circuit 6 is basically the same as the circuit structure in our common smart padlock, and will not be described in detail here.

[0025] The antenna 10 is floated on the surface of the lock body 1. Here, a groove for storing the antenna is opened on the surface of the lock body 1. In order to better protect the antenna, an antenna cover 101 is also provided on the groove.

[0026] The working process of the present invention is as follows:

[0027] 1. When the lock is locked and ready to be unlocked, the NFC mobile phone or wireless energy key is brought close to the antenna 10 of the lock. When the antenna senses the NFC mobile phone or wireless energy key, the control circuit 6 converts the electromagnetic wave into electrical energy and starts working, and charges the energy storage capacitor or battery 7. At this time, the control circuit 6 also communicates data with the NFC mobile phone or wireless energy key through the antenna to verify the authorization. If the user of the mobile phone or wireless energy key has the unlocking authority, the control circuit 6 provides a large amount of electrical energy through the energy storage capacitor or battery 7 to drive the motor 9 to drive the unlocking wheel 20 to rotate in the unlocking direction. The eccentric boss 201 on the unlocking wheel 20 acts on the unlocking position 311 of the lock tongue 3 to move the lock tongue in the unlocking direction to disengage from the lock opening. When the lock ring 2 is separated from the lock tongue 3, it bounces up under the action of the lock ring spring 5 to achieve automatic unlocking. At this time, the state sensor 8 senses that the lock has been unlocked and sends state information to the mobile phone or wireless key through the control circuit 6.

[0028] 2. When the lock is unlocked and ready to be locked, the NFC mobile phone or wireless energy key is brought close to the antenna 10 of the lock. When the antenna 10 senses the NFC mobile phone or wireless energy key, the control circuit 6 converts the electromagnetic wave into electrical energy and starts working, and charges the energy storage capacitor or battery 7. At this time, the control circuit 6 also communicates data with the NFC mobile phone or wireless energy key through the antenna 10 to verify the authorization. If the user of the mobile phone or wireless energy key has the locking authority, the control circuit 6 provides a large amount of electrical energy through the energy storage capacitor or battery 7 to drive the motor 9 to drive the unlocking wheel 20 to rotate in the locking direction, so the boss rotates from the unlocking position 311 of the boss active groove 31 to the anti-collision position 312 to make room for the lock tongue to move in the locking direction, so the lock tongue 3 moves toward the locking opening 21 of the lock ring 2 under the action of the lock tongue spring 4. At this time, there are two situations:

[0029] 2-1), if the lock ring 2 has been pressed down and maintained, the lock tongue 3 will be inserted into the locking opening 21 of the lock ring 2 under the push of the lock tongue spring, so that the lock ring cannot bounce up. At this time, the protrusion 201 of the unlocking wheel 20 rotates to the anti-collision position to complete the locking. Figure 2 , 6 Then, when the status sensor 8 senses that the lock is closed, the control circuit 6 sends a locked status message to the mobile phone or wireless key.

[0030] 2-2), if the lock ring has not been pressed and held, at this time, on the one hand, the lock tongue 3 presses on the outer edge of the lock ring 2, and on the other hand, the boss 201 on the unlocking wheel 20 will hit the left part of the boss movable groove and be blocked, such as Figure 5As shown, the unlocking wheel 20 stops rotating, while the motor shaft 91 continues to rotate slightly and then stops, so that the torsion spring forms prestress. In this case, if the lock ring 2 is pressed down and maintained, the lock tongue 3 continues to slide under the action of the lock tongue spring 4 and then inserts into the locking port 21. At this time, the left part of the movable groove of the boss releases the obstruction to the boss, so the unlocking wheel rotates under the action of the torsion spring stress, causing the boss to swing slightly by a certain angle, thereby allowing the boss to smoothly rotate to the outside of the anti-collision position 312 of the movable groove of the boss and close to the anti-collision position.

[0031] As can be seen from the above, when the user wants to lock, whether the user first drives the locking mechanism to the locked position through the mobile phone NFC or Bluetooth (including but not limited to) and then presses the lock ring to lock, or first presses down the lock ring and drives the locking mechanism to the locked position to lock, the locking can be successfully achieved, and there is no need to hold down the lock ring with one hand and then release the hand when the mechanism is driven to the locked position, thereby satisfying people's different usage habits and greatly improving people's usage experience. In the locked state, when the criminals use external force to hit, because the anti-collision position of the lock tongue is blocked by the convex column of the unlocking wheel, the lock tongue cannot move in the unlocking direction under the inertia generated by the impact, truly realizing anti-collision opening, thereby improving the anti-theft performance of the smart padlock.

[0032] In such Figure 7 , 8 In the illustrated embodiment, the groove shape of the boss movable groove 31 is bent, and includes a longitudinal groove 313 and a transverse groove 314. When the locking ring 2 is in the locked state, the boss 201 on the unlocking wheel 20 is pressed against the anti-collision position 312 of the transverse groove 314; when the locking ring 2 is in the unlocked state, the boss 201 on the unlocking wheel 20 is located in the transverse groove 314. When the lock ring 2 is to be locked, the motor 9 drives the eccentric boss 201 of the unlocking wheel to rotate and then rotate from the transverse groove 314 to the direction of the longitudinal groove 313. At this time, if the lock ring is not pressed yet, the eccentric boss 201 will be blocked by the inner side position 315 of the longitudinal groove 313, and then the motor that continues to work will twist the torsion spring to generate prestress. At this time, if the lock ring is pressed again, the lock tongue 3 is first inserted into the locking port 21 of the lock ring 2 under the action of the lock tongue spring 4, and then the unlocking wheel rotates under the prestress of the torsion spring to rotate and reset the boss 201 to the side of the anti-collision position 312 in the transverse groove 314 close to the transverse groove 314, so as to prevent the lock ring in the locked state from being hit and unlocked. It can be seen that even if the mobile phone NFC or wireless energy transmission key is used to lean against the antenna to issue a locking command, and then the lock ring is pressed, the locking action can also be achieved.

[0033] Of course, the groove shape of the boss movable groove 31 can also be a linear transverse groove, such as Fig. 9As shown. When the lock ring 2 is to be locked, the motor 9 drives the eccentric boss 201 of the unlocking wheel to rotate in the locking direction. At this time, if the lock ring is not pressed, the eccentric boss 201 will be blocked by the anti-collision position 312 of the transverse groove; then, the motor that continues to work will twist the torsion spring to generate prestress. At this time, if the lock ring is pressed again, the lock tongue 3 is first inserted into the locking port 21 of the lock ring 2 under the action of the lock tongue spring 4, and the anti-collision position 312 of the transverse groove releases the blocking of the boss. Then, the unlocking wheel rotates again under the prestress of the torsion spring to reset the boss 201 to the side of the anti-collision position 312 of the transverse groove, thereby preventing the lock ring in the locked state from being hit and unlocked. It can also be seen that even if the mobile phone NFC or wireless energy transmission key is used to send a locking command against the antenna first, and then the lock ring is pressed, the locking action can also be achieved.

[0034] Normally, the motor 9 drives the unlocking wheel to rotate by transmitting force through the torsion spring 30. When the unlocking wheel hits the left side (anti-collision position or inner side) of the movable groove of the convex column and cannot continue to rotate, the motor shaft can continue to rotate a certain angle to twist the torsion spring to generate prestress. For this reason, after the unlocking wheel is sleeved on the motor shaft of the motor, they can rotate relative to each other by a certain angle. In this embodiment, if Figure 7 , 8 As shown, the motor shaft 91 is in a "cross" shape; a plurality of protrusions 203 for applying force to the motor shaft 91 are provided in the insertion hole 202 of the unlocking wheel 20, and the angle between adjacent protrusions 203 is larger than the part of the motor shaft they clamp, so as to leave a certain space for the motor shaft to twist the torsion spring to generate prestress.

[0035] This embodiment is a preferred implementation method. Figure 2 , 3The lock ring 2 is provided with a rainproof structure 40 at the end close to the locking port 21, which includes a lock ring sealing sleeve 401, a rainproof cap 402 and a sealing ring 403 which can be relatively movably sleeved on the outside of the lock ring 2. The lower end of the lock ring sealing sleeve 401 is tightly fixed to the lock body 1 (usually ultrasonic welding is required), and the upper end is exposed to the lock body 1 and a sealing ring 403 is provided on the inner wall of the upper end; the rainproof cap 402 is a hollow tube, the upper end of which is tightly sleeved on the lock ring 2 (usually ultrasonic welding is required), and the lower end is covered on the exposed part of the lock ring sealing sleeve 401, so that rainwater falling on the lock ring above the rainproof cap will flow along The rain cap flows down to the upper surface of the lock body. Even if a small amount of water vapor penetrates into the rain cap, it will be blocked by the sealing ring 403 and will not continue to penetrate downward along the lock ring into the lock body; and the rainwater falling on the upper surface of the lock body cannot flow over the upper end of the lock ring sealing sleeve and penetrate into the lock body because the lock ring sealing sleeve 401 is higher than the upper surface of the lock body and is tightly installed in the lock body. In this way, the rainwater can be greatly reduced from penetrating into the lock body along the lock ring to affect the operation of electrical components such as the control circuit 6, the motor 9 and the status sensor 8, thereby greatly improving the waterproof performance of the smart padlock, and it can reach the IP67 protection level after testing.

[0036] Although the present invention is described in detail with reference to the above embodiments, it is obvious to those skilled in the art through this disclosure that various changes or modifications may be made to the present invention without departing from the principle and spirit of the present invention defined by the claims. Therefore, the detailed description of the embodiments of the present disclosure is only used to explain, not to limit the present invention, but the scope of protection is limited by the content of the claims.

Claims

1. An anti-collision smart padlock, comprising a lock body, a lock ring, a lock tongue arranged in the lock body, a lock tongue spring, a lock ring spring, a control circuit, an energy storage capacitor or a battery, a lock tongue state sensor and a motor, and an antenna arranged on the lock body, characterized in that: The motor drives the lock tongue to slide horizontally away from the locking opening of the lock ring through an unlocking wheel with an eccentric boss to unlock the motor; a boss movable groove for the boss to fall into is provided on the lock tongue; a torsion spring is provided in the unlocking wheel; after the unlocking wheel is sleeved on the motor shaft of the motor, the exposed force-bearing end of the torsion spring is force-connected with the motor shaft of the motor; the insertion hole of the unlocking wheel is matched with the motor shaft of the motor in radial clearance.

2. The anti-collision smart padlock according to claim 1, characterized in that: The groove shape of the convex column movable groove is bent, and includes a longitudinal groove and a transverse groove.

3. The anti-collision smart padlock according to claim 1, characterized in that: The groove shape of the convex column movable groove is a linear transverse groove.

4. The anti-collision smart padlock according to any one of claims 1 to 3, characterized in that: The motor shaft is in a "cross" shape; a plurality of protrusions for applying force to the motor shaft are arranged in the insertion hole of the unlocking wheel, and the angle between adjacent protrusions is larger than the part of the motor shaft clamped by them.

5. The anti-collision smart padlock according to claim 4, characterized in that: The locking ring is provided with a rainproof structure at the end close to the locking port, which includes a locking ring sealing sleeve, a rainproof cap and a sealing ring that can be relatively movably sleeved on the outside of the locking ring. The lower end of the locking ring sealing sleeve is tightly fixed to the lock body, and the upper end is exposed to the lock body and a sealing ring is provided on the inner wall of the upper end; the rainproof cap is a hollow tube, the upper end of which is tightly sleeved on the locking ring, and the lower end covers the exposed part of the locking ring sealing sleeve.

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