Low torque electronic padlock

Abstract

This utility model discloses a low-torque electronic padlock, comprising: a housing; an electric drive assembly disposed within the housing, the electric drive assembly having an output shaft; a rotating member mounted on the output shaft and rotating with the output shaft; a locking pin movably disposed within the housing; and a locking beam detachably mounted on the housing. The locking pin engages with the locking beam to lock the padlock. When rotated to the locked position, the rotating member enters the active stroke path of the locking pin to restrict its retraction; when rotated to the unlocked position, it leaves the active stroke path of the locking pin. This reduces resistance during the drive process and enables reliable unlocking under low-torque power supply conditions.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, specifically to a low-torque electronic padlock. Background Technology

[0002] In some usage scenarios, due to the low power supply current, the motor in the electronic padlock has low torque when driving it, which can easily lead to unlocking failure.

[0003] In specific scenarios, such as NFC reverse power supply, power can be supplied through external induction, but the current is extremely small and the motor driving force is also very small, which makes it easy to fail to drive due to resistance during the driving process. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a low-torque electronic padlock that can reduce resistance during the driving process and achieve reliable unlocking under low-torque power supply conditions.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a low-torque electronic padlock, comprising: shell; An electric drive assembly, disposed within the housing, the electric drive assembly having an output shaft; A rotating component is mounted on the output shaft and rotates with the output shaft. A locking pin is movably disposed within the housing; A locking beam is pluggably mounted on the housing, and the locking pin is locked by moving and engaging with the locking beam; When the rotating component is rotated to the locked position, it enters the active travel path of the locking pin to restrict the locking pin from retracting, and when it is rotated to the unlocked position, it leaves the active travel path of the locking pin.

[0006] As a further improvement of this utility model, the rotating member includes: A rotating base is connected to the output shaft; The locking part is rotatably connected to the rotating seat; A spring is connected between the rotating seat and the locking part.

[0007] As a further improvement of this utility model, it also includes a mechanical lock cylinder, which is disposed in the housing and has a protrusion that rotates with the mechanical lock cylinder; In the mechanically unlocked state, the mechanical lock cylinder rotates, causing the protrusion to abut against the locking part and pry the locking part to rotate to the unlocked position, while the rotating seat remains stationary and the spring is stretched. After the mechanical lock cylinder is reset, the locking part is reset to the locked position under the action of the spring.

[0008] As a further improvement of this utility model, the rotating seat is provided with a mating surface. When the rotating seat rotates, the mating surface abuts against the locking part to drive the locking part to rotate.

[0009] As a further improvement of this utility model, the mating surface includes a first mating surface and a second mating surface. The first mating surface is used to push the locking part to rotate to complete unlocking, and the second mating surface is used to limit the maximum stroke of the locking part during mechanical unlocking.

[0010] As a further improvement of this utility model, the locking pin is connected to a locking pin spring, and the locking pin spring maintains the tendency of the locking pin to move in the locking direction.

[0011] As a further improvement of this utility model, when the locking pin is in the locked state, a gap is formed between the locking pin and the rotating member.

[0012] As a further improvement of this utility model, the electric drive assembly receives electrical energy through induction identification and reverse power supply.

[0013] The beneficial effect of this utility model is that the locking and unlocking of the locking pin is controlled by the movement path of the rotating part entering or leaving the locking pin, so that the rotating part does not need to be linked with other components during operation, thus reliably driving the rotating part to complete the unlocking even under low torque power supply conditions. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the internal structure of this utility model. Figure 1 ; Figure 2 This is a front view of the internal structure of this utility model; Figure 3 This is a three-dimensional schematic diagram of the internal structure of this utility model. Figure 2 ; Figure 4 This is a three-dimensional schematic diagram of the internal structure of this utility model. Figure 3 ; Figure 5 This is a three-dimensional schematic diagram of the internal structure of this utility model. Figure 4 ; Figure 6 This is a schematic diagram of the locked state of this utility model; Figure 7 This is a schematic diagram of the rotating seat structure of this utility model.

[0015] Reference numerals: 1. Housing; 2. Electric drive assembly; 3. Rotating component; 31. Rotating seat; 311. First mating surface; 312. Second mating surface; 32. Locking part; 33. Spring; 4. Locking pin; 5. Locking beam; 6. Mechanical lock cylinder; 61. Protrusion; 7. Locking pin spring. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the embodiments shown in the accompanying drawings.

[0017] Reference Figure 1-7 As shown, a low-torque electronic padlock according to this embodiment includes: Outer shell 1; Electric drive assembly 2 is disposed in housing 1, and electric drive assembly 2 has an output shaft; Rotating component 3 is mounted on the output shaft; Locking pin 4 is movably disposed in housing 1; The locking beam 5 is detachably mounted on the housing 1, and the locking pin 4 is locked by moving in cooperation with the locking beam 5.

[0018] When the rotating member 3 is rotated to the locked position, it enters the active stroke path of the locking pin 4 to restrict the retraction of the locking pin 4, and when it is rotated to the unlocked position, it leaves the active stroke path of the locking pin 4.

[0019] In this solution, since the electric drive component 2 only needs to drive the rotating part 3 to rotate and change its position, without needing to link other components, the driving resistance is small, which can meet the unlocking and locking actions in low-current scenarios. Especially in low-current scenarios such as NFC reverse power supply.

[0020] During operation, the locking pin 4 can move with the help of components such as the spring 33. The locking beam 5 is provided with a groove corresponding to the position of the locking pin 4. When the rotating part 3 is in the unlocked position, the locking beam 5 can be pulled out to push the locking pin 4 to move. When the rotating part 3 is in the locked position, it can restrict the movement of the locking pin 4 and maintain the locked state.

[0021] To facilitate the separation of electric unlocking and mechanical unlocking paths, in one optional embodiment, the rotating component 3 includes: Rotary seat 31 is connected to the output shaft; The locking part 32 is rotatably connected to the rotating seat 31; Spring 33 is connected between rotating seat 31 and locking part 32.

[0022] By dividing the rotating component 3 into two parts, a rotating base 31 and a locking part 32, and connecting them with a spring 33, the rotating base 31 and the locking part 32 can rotate relative to each other. During normal electric unlocking, the rotating base 31 rotates, causing the locking part 32 to rotate as well; during mechanical unlocking, the locking part 32 can be pried open independently, and there is no movement interference between the electric unlocking path and the mechanical unlocking path. This ensures that the electric drive assembly 2 is unaffected by resistance, guaranteeing the driving effect under low current conditions. Simultaneously, the spring 33 ensures that the state between the rotating base 31 and the locking part 32 remains relatively stable, preventing accidental unlocking under external vibration or impact, thus improving locking security.

[0023] In some options, a mechanical lock cylinder 6 is also included, which is disposed in the housing 1 and has a protrusion 61 that rotates with the mechanical lock cylinder 6; In the mechanical unlocked state, the mechanical lock cylinder 6 rotates, causing the protrusion 61 to abut against the locking part 32 and prying the locking part 32 to rotate to the unlocked position. The rotating seat 31 remains stationary, and the spring 33 is stretched. After the mechanical lock cylinder 6 is reset, the locking part 32 is reset to the locked position under the action of the spring 33.

[0024] Since the rotating base 31 is stationary, it provides a stable environment for the spring 33 to stretch. After the mechanical lock cylinder 6 is reset, the protrusion 61 moves away from the locking part 32, and the restoring force of the spring 33 drives the locking part 32 to automatically reset to the locked position, eliminating the need for manual reset and making it convenient to use.

[0025] In one specific structure, the rotating base 31 is provided with a mating surface. When the rotating base 31 rotates, the mating surface abuts against the locking part 32, thereby driving the locking part 32 to rotate. The direct contact transmission of the mating surface makes the unlocking action more stable.

[0026] Furthermore, the mating surfaces include a first mating surface 311 and a second mating surface 312. The first mating surface 311 is used to push the locking part 32 to rotate to complete the unlocking, and the second mating surface 312 is used to limit the maximum stroke of the locking part 32 during mechanical unlocking.

[0027] During electric unlocking, the rotating seat 31 rotates, and the first mating surface 311 abuts against the locking part 32, pushing it to rotate, causing the locking part 32 to rotate from the locked position to the unlocked position, leaving the active stroke path of the locking pin 4. During mechanical unlocking, the locking part 32 is pried and rotated by external force, and the second mating surface 312 provides a stroke limit for the locking part 32, preventing excessive rotation of the locking part 32 from causing damage or affecting the service life of the spring 33.

[0028] In order to facilitate the automatic return of the locking pin 4 to the locked position after unlocking, the locking pin 4 is connected to a locking pin spring 7, which maintains the tendency of the locking pin 4 to move in the locking direction.

[0029] When the locking beam 5 is reinserted, the locking pin spring 7 pushes the locking pin 4 into the locking position automatically, without the need for additional reset operation.

[0030] To ensure low-torque driving effect, a gap is formed between the locking pin 4 and the rotating part 3 when the locking pin 4 is in the locked state.

[0031] When the electronic padlock is locked, the locking pin 4 is embedded in the groove of the locking beam 5. At this time, the gap between the locking pin 4 and the rotating part 3 ensures that there is no physical contact between them. When the electric drive assembly 2 receives the unlocking signal and starts to drive, the electric drive assembly 2 can smoothly complete the unlocking action even under extremely low torque conditions.

[0032] To facilitate a reliable engagement between the locking pin 4 and the locking beam 5, a locking groove is provided on the locking beam 5. The locking pin 4 moves laterally to engage or disengage from the locking groove. The locking groove provides a definite locking position for the locking pin 4, enabling it to form a mechanical fit after being inserted, and maintain a stable locking state even when subjected to external forces.

[0033] To facilitate wireless power unlocking, the electric drive component 2 receives power via NFC reverse power supply.

[0034] This solution enables electronic padlocks to be unlocked by touching a mobile phone or other device with NFC reverse power supply, even when there is no built-in battery or the battery is depleted, achieving reliable operation under low torque power supply conditions.

[0035] The complete unlocking and locking workflow is described below, taking into account all implementation methods.

[0036] Electric unlocking process: An external device uses NFC to provide reverse power to the electronic padlock for simultaneous identification and authentication. The electric drive assembly 2 receives power and drives the output shaft to rotate. The output shaft drives the rotating seat 31 to rotate, and the first mating surface 311 on the rotating seat 31 abuts against the locking part 32, pushing the locking part 32 to rotate. The locking part 32 rotates from the locked position to the unlocked position, leaving the active travel path of the locking pin 4. At this time, the locking pin 4 is no longer restricted by the locking part 32. The user pulls the locking beam 5 outward, and the locking pin 4 moves laterally in the unlocking direction under the action of the locking beam 5, disengaging from the groove of the locking beam 5. The locking beam 5 is pulled out of the housing 1, completing the electric unlocking. Because a gap is maintained between the locking pin 4 and the rotating part 3 in the locked state, there is zero contact resistance during the start-up and rotation of the rotating part 3. The electric drive assembly 2 can reliably complete the unlocking even under the extremely low current conditions of NFC reverse power supply.

[0037] Mechanical unlocking process: When the electric drive assembly 2 malfunctions, power is unavailable, or electronic identification is unusable, the user inserts the mechanical key into the mechanical lock cylinder 6 and rotates it. The mechanical lock cylinder 6 drives the protrusion 61 to rotate, and the protrusion 61 abuts against the locking part 32, using leverage to pry the locking part 32 to rotate. During this process, the rotating seat 31 remains stationary, only the locking part 32 rotates independently, and the spring 33 is stretched. After the locking part 32 rotates to the unlock position, it leaves the travel path of the locking pin 4, and the locking pin 4 can move. The user pulls the lock beam 5 to complete the unlocking. The mechanical key rotates back to reset the mechanical lock cylinder 6, the protrusion 61 leaves the locking part 32, and the spring 33 releases its restoring force, causing the locking part 32 to automatically return to the locked position, restoring the locking function. The mechanical unlocking process does not involve the movement of any parts of the electric drive assembly 2 and does not impose any additional load on the electric drive assembly 2.

[0038] Locking process: Reinsert the locking beam 5 into the locking beam 5 hole in the outer casing 1. During its downward movement, the locking beam 5 pushes the locking pin 4 in the unlocking direction and compresses the locking pin spring 7. When the locking beam 5 reaches the locked position, the groove on the locking beam 5 aligns with the locking pin 4, and the locking pin 4 moves laterally under the restoring force of the locking pin spring 7 and engages in the locking groove. After the rotating part 3 enters the locked position, a gap is maintained between the locking pin 4 and the rotating part 3, with no contact. At this time, the rotating part 3 is in the locked position, and the locking part 32 is located in the active stroke path of the locking pin 4, preventing the locking pin 4 from retracting, and the locking beam 5 is reliably locked. The locking process requires no electric drive; the locking pin spring 7 automatically completes the locking, making operation simple.

[0039] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A low-torque electronic padlock, characterized in that, include: Outer shell (1); An electric drive assembly (2) is disposed in the housing (1), the electric drive assembly (2) having an output shaft; Rotating component (3) is mounted on the output shaft and rotates with the output shaft; A locking pin (4) is movably disposed in the housing (1); The locking beam (5) is pluggably mounted on the housing (1), and the locking pin (4) is locked by moving in cooperation with the locking beam (5); When the rotating member (3) is rotated to the locked position, it enters the active stroke path of the locking pin (4) to restrict the retraction of the locking pin (4), and leaves the active stroke path of the locking pin (4) when it is rotated to the unlocked position.

2. The low-torque electronic padlock according to claim 1, characterized in that, The rotating component (3) includes: Rotary seat (31) is connected to the output shaft; The locking part (32) is rotatably connected to the rotating seat (31); A spring (33) is connected between the rotating seat (31) and the locking part (32).

3. The low-torque electronic padlock according to claim 2, characterized in that, It also includes a mechanical lock cylinder (6), which is disposed in the housing (1) and has a protrusion (61) that rotates with the mechanical lock cylinder (6). In the mechanical unlocked state, the mechanical lock cylinder (6) rotates to make the protrusion (61) abut against the locking part (32) and pry the locking part (32) to rotate to the unlocked position, the rotating seat (31) remains stationary, and the spring (33) is stretched; After the mechanical lock cylinder (6) is reset, the locking part (32) is reset to the locked position under the action of the spring (33).

4. The low-torque electronic padlock according to claim 2 or 3, characterized in that, The rotating seat (31) is provided with a mating surface. When the rotating seat (31) rotates, the mating surface abuts against the locking part (32) to drive the locking part (32) to rotate.

5. The low-torque electronic padlock according to claim 4, characterized in that, The mating surfaces include a first mating surface (311) and a second mating surface (312). The first mating surface (311) is used to push the locking part (32) to rotate to complete the unlocking, and the second mating surface (312) is used to limit the maximum stroke of the locking part (32) during mechanical unlocking.

6. The low-torque electronic padlock according to claim 1, characterized in that, The locking pin (4) is connected to a locking pin spring (7), which maintains the tendency of the locking pin (4) to move in the locking direction.

7. The low-torque electronic padlock according to claim 6, characterized in that, When the locking pin (4) is in the locked state, a gap is formed between the locking pin (4) and the rotating member (3).

8. The low-torque electronic padlock according to claim 6, characterized in that, The electric drive assembly (2) receives electrical energy via NFC reverse power supply.

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