Full-automatic deceleration power assembly for intelligent lock

Abstract

The application introduces a kind of full-automatic deceleration power group for intelligent lock, including shell, DC motor;Worm is connected with DC motor output shaft;Worm wheel is set in shell through shaft one, oblique tooth rear wheel of worm wheel is engaged with worm, straight tooth front wheel of worm wheel is engaged with big wheel of front part of bridge wheel, small wheel of rear part of bridge wheel is engaged with big wheel of rear part of middle wheel;Two balance wheels are respectively rotatably arranged on two ends of swing element and respectively engaged with small wheel of front side center of middle wheel;Torsion spring is arranged on shaft three of front side of swing element, positioning partition is arranged on shaft three of front side of torsion spring.The application has high overall structure cooperation degree, reaction is sensitive, DC motor positive and negative rotation drives two balance wheels and double wheels to be engaged or disengaged state sensitive switching through swing element, balance wheel and double wheel are in disengaged state, power group of engagement transmission will not be stuck, when fault occurs, mechanical key can be successfully unlocked, which greatly improves the safety of intelligent lock.

Description

Technical Field

[0001] This invention relates to the field of lock technology, and in particular to a fully automatic deceleration power unit for smart locks. Background Technology

[0002] Most existing smart locks use simple single-stage gear reduction, lacking integrated, high-precision motor reduction modules. This results in insufficient torque output, low transmission efficiency, slow bolt response, and incomplete opening and closing. High-speed operation leads to severe impact wear, short lifespan, and high noise levels. Furthermore, the dispersed arrangement of the motor, reduction mechanism, and lock body transmission components results in low space utilization, a large overall lock body size, and inability to adapt to various installation scenarios such as ultra-thin doors and non-standard doors. The complex internal structure and cumbersome assembly process also contribute to this problem. Additionally, the reduction mechanism has poor protection, making it susceptible to electromagnetic interference and external damage. In cases of motor failure or power outage, the electronic drive fails, leading to mechanical unlocking difficulties and the risk of locking up. Without an optimized reduction and torque-increasing structure, the motor requires high-frequency, high-power operation, resulting in high power consumption, frequent battery replacements, and incompatibility with low-power smart control solutions, failing to meet the long-term battery life requirements of smart homes. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a fully automatic deceleration power unit for smart locks. By optimizing the built-in motor deceleration drive structure, the lock body is miniaturized, modularized, highly reliable, and operates with low power consumption, thereby improving the security of smart locks.

[0004] The technical solution adopted in this invention is: A fully automatic reduction power unit for a smart lock includes a housing, a DC motor, a worm gear, a worm wheel, a bridge wheel, a middle wheel, a swing element, a balance wheel, a tower spring, a positioning partition, and two wheels; The upper part of the housing is provided with an opening slot; the DC motor is located on the outer side of the housing, and the worm is connected to the output shaft of the DC motor; the worm wheel is located inside the housing through shaft one, the helical rear wheel of the worm wheel meshes with the worm, the spur front wheel of the worm wheel meshes with the large front wheel of the bridge wheel, the small rear wheel of the bridge wheel meshes with the large rear wheel of the middle wheel, the bridge wheel is located inside the housing through shaft two, and the middle wheel is located inside the housing through shaft three; the swing member has a V-shaped structure, and the swing member is located on shaft three on the front side of the middle wheel through the central hole of the V-shape, and the two swing wheels are respectively rotatably located on both ends of the swing member and respectively mesh with the small wheel at the center of the front side of the middle wheel; the tower spring is located on shaft three on the front side of the swing member, the positioning partition is located on shaft three on the front side of the tower spring, and the rear side of the positioning partition is provided with a V-shaped limiting protrusion that matches the V-shape of the swing member; The dual wheels are rotatably mounted inside the housing, with the upper ends of the dual wheels protruding from the upper opening slot of the housing; the center of the dual wheels is provided with a connecting hole that mates with the flat iron at the tail of the lock cylinder; the teeth on the rear end of the dual wheels alternately mesh with the two swing wheels, and the teeth on the front end mesh with the large slide plate drive assembly inside the lock body.

[0005] Specifically, the housing includes a rear shell and a front cover, which are connected by screws to form a box-shaped structure with an opening slot at the top.

[0006] More specifically, bearings are provided on both ends of shaft one, shaft two, shaft three and the double wheels, and mounting grooves for bearing installation are provided on the rear shell and front cover respectively.

[0007] Specifically, the large end of the tower spring contacts the positioning partition, and the small end contacts the swinging component.

[0008] Due to the adoption of the technical solution described above, the present invention has the following advantages: The small end of the tower spring of this invention rests against the V-shaped bottom of the swing member, ensuring that the swing member always has a dynamic elastic force in one direction. Furthermore, the large-angle V-shaped limiting protrusion on the rear side of the positioning partition ensures that the swing member can only swing precisely left and right within the limiting protrusion, thus eliminating pressure dead zones. This further guarantees that the balance wheel will not burst during left and right engagement and disengagement, ensuring the safety and reliability of the power unit structure. The overall structure of this invention has a high degree of fit and is highly responsive. The forward and reverse rotation of the DC motor drives the two balance wheels and the double wheel to switch sensitively between engagement and disengagement states via the swing member. When the balance wheels and the double wheel are in the disengaged state, the power unit of the engagement transmission will not jam. In the event of a malfunction, the mechanical key can unlock smoothly, greatly improving the security of the smart lock. Attached Figure Description

[0009] Figure 1 This is an overall schematic diagram of the present invention.

[0010] Figure 2 This is a schematic diagram of the interior of the present invention after removing the shell.

[0011] Figure 3 This is a schematic diagram of the meshing inside the present invention.

[0012] Figure 4 This is a schematic diagram of the swinging component and the positioning partition of the present invention.

[0013] Figure 5 This is a schematic diagram of the engagement between the bridge wheel and the intermediate wheel of the present invention.

[0014] In the diagram: 1-Rear shell, 2-Front cover, 3-DC motor, 4-Worm gear, 5-Worm wheel, 6-Bridge wheel, 7-Middle wheel, 8-Swing component, 9-Balance wheel, 10-Tower spring, 11-Positioning partition, 12-Limiting protrusion, 13-Double wheel, 14-Shaft 1, 15-Shaft 2, 16-Shaft 3. Detailed Implementation

[0015] The present invention will be further explained and described below with reference to the accompanying drawings and embodiments. However, this should not be construed as limiting the scope of protection of the present invention. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0016] Combined with appendix Figure 1-5 The smart lock shown uses a right-angle reversing clutch drive power unit, including a housing, a DC motor 3, a worm gear 4, a worm wheel 5, a bridge wheel 6, a middle wheel 7, a swing element 8, a balance wheel 9, a tower spring 10, a positioning partition 11, and a double wheel 13.

[0017] The housing includes a rear shell 1 and a front cover 2, which are connected by screws to form a box-shaped structure with an opening slot at the top. A DC motor 3 is located on the outside of the housing, and a worm gear 4 is connected to the output shaft of the DC motor 3. A worm wheel 5 is located between the rear shell 1 and the front cover 2 via a shaft 14. The helical rear wheel of the worm wheel 5 meshes with the worm gear 4, the spur front wheel of the worm wheel 5 meshes with the large front wheel of the bridge wheel 6, the small rear wheel of the bridge wheel 6 meshes with the large rear wheel of the middle wheel 7, the bridge wheel 6 is located between the rear shell 1 and the front cover 2 via a shaft 2 15, and the middle wheel 7 is located between the rear shell 1 and the front cover 2 via a shaft 3 16.

[0018] The swing member 8 has a V-shaped structure. The swing member 8 is mounted on the shaft 16 in front of the central wheel 7 through the central hole of the V-shape. The two swing wheels 9 are respectively mounted on the two ends of the swing member 8 and respectively mesh with the small wheel in the center of the front side of the central wheel 7. The tower spring 10 is mounted on the shaft 16 in front of the swing member 8. The positioning partition 11 is mounted on the shaft 16 in front of the tower spring 10. The large end of the tower spring 10 contacts the positioning partition 11, and the small end contacts the swing member 8. The rear side of the positioning partition 11 is provided with a V-shaped limiting protrusion 12 that matches the V-shape of the swing member 8.

[0019] The double wheel 13 is rotatably positioned between the rear shell 1 and the front cover 2. The center of the double wheel 13 is provided with a connecting hole that mates with the flat iron at the tail of the lock cylinder. The gear teeth on the rear end of the double wheel 13 alternately mesh with the two swing wheels 9, and the gear teeth on the front end mesh with the large slide plate drive assembly inside the lock body.

[0020] Preferably, bearings are provided at both ends of the first shaft 14, the second shaft 15, the third shaft 16 and the double wheel 13, and mounting grooves for bearing installation are provided on the rear shell 1 and the front cover 2 respectively.

[0021] In the initial state, the two balance wheels 9 are disengaged from the teeth of the double wheel 13. When the lock's electronic main board receives an unlocking or locking signal, it controls the DC motor 3 to rotate forward or reverse. The worm gear 5, worm 4, bridge wheel 6, and middle wheel 7 mesh sequentially. The rotation of the middle wheel 7 forward or reverse drives its corresponding balance wheel 9 to mesh with the teeth of the double wheel 13, thereby driving the double wheel 13 to rotate forward or reverse. The double wheel 13 meshes with the large slide drive assembly inside the lock. The transmission assembly drives the large slide to move, realizing unlocking or locking. When the unlocking or locking is in place, the lock's electronic main board controls the DC motor 3 to stop at a specified time and rotate in the opposite direction, causing the balance wheels 9 to disengage from the double wheel 13, returning to the initial state.

[0022] The initial state is that the mechanical key is used to open and lock, leaving room for operation. When the mechanical key is used to open or lock, the electronic main board of the lock will not emit electronic signals. Since the double wheel 13 and the swing wheel 9 are in a disengaged state, when the mechanical key drives the flat iron at the tail of the lock cylinder to rotate, the rotation of the double wheel 13 drives the transmission component of the lock, causing the large slide plate to drive the lock tongue to open or lock.

[0023] The parts of this invention not described in detail are prior art.

[0024] The embodiments selected herein for the purpose of disclosing the inventive objectives of the present invention are, as currently deemed appropriate, but it should be understood that the present invention is intended to include all variations and modifications of the embodiments that fall within the scope of this concept and invention.

Claims

1. A fully automatic deceleration power unit for a smart lock, characterized in that, Includes housing, DC motor, worm gear, worm wheel, bridge wheel, middle wheel, oscillating component, balance wheel, tower spring, positioning partition, and double wheels; The upper part of the housing is provided with an opening slot; the DC motor is located on the outer side of the housing, and the worm is connected to the output shaft of the DC motor; the worm wheel is located inside the housing through shaft one, the helical rear wheel of the worm wheel meshes with the worm, the spur front wheel of the worm wheel meshes with the large front wheel of the bridge wheel, the small rear wheel of the bridge wheel meshes with the large rear wheel of the middle wheel, the bridge wheel is located inside the housing through shaft two, and the middle wheel is located inside the housing through shaft three; the swing member has a V-shaped structure, and the swing member is located on shaft three on the front side of the middle wheel through the central hole of the V-shape, and the two swing wheels are respectively rotatably located on both ends of the swing member and respectively mesh with the small wheel at the center of the front side of the middle wheel; the tower spring is located on shaft three on the front side of the swing member, the positioning partition is located on shaft three on the front side of the tower spring, and the rear side of the positioning partition is provided with a V-shaped limiting protrusion that matches the V-shape of the swing member; The dual wheels are rotatably mounted inside the housing, with the upper ends of the dual wheels protruding from the upper opening slot of the housing; the center of the dual wheels is provided with a connecting hole that mates with the flat iron at the tail of the lock cylinder; the teeth on the rear end of the dual wheels alternately mesh with the two swing wheels, and the teeth on the front end mesh with the large slide plate drive assembly inside the lock body.

2. The fully automatic deceleration power unit for smart locks according to claim 1, characterized in that: The housing includes a rear shell and a front cover, which are connected by screws to form a box-shaped structure with an opening slot at the top.

3. The fully automatic deceleration power unit for smart locks according to claim 2, characterized in that: Bearings are provided on both ends of shaft one, shaft two, shaft three and the double wheels, and mounting grooves for bearing installation are provided on the rear shell and front cover.

4. The fully automatic deceleration power unit for smart locks according to claim 1, characterized in that: The large end of the tower spring contacts the positioning partition, and the small end contacts the swinging component.

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