A clutching deceleration drive structure for a lock body

Abstract

The utility model relates to a clutching deceleration drive structure for lock body relates to intelligent lock technical field, including lower casing, upper cover, motor and umbrella wheel, lower casing is fixedly connected with upper cover through the connecting screw in a plurality of screw holes at the edge, the motor is connected in the middle part of the connecting plate in the lower part of lower casing through fixed screw, is equipped with recess A and recess B from front to back in the inside of lower casing, the end big wheel subassembly is connected on recess A, the utility model discloses the structure setting of recess B in the inside of casing makes the swing piece on umbrella wheel axle A swing left and right in recess B, and is limited through V type surface and waist -shaped block, avoids when swing piece not having up and down limit, and two balance wheels bear the condition of big angular force, and two balance wheels on the teeth of instantaneous will be pressed and burst one by one, the utility model discloses the cooperation of swing piece and recess B limit uses, safe and reliable, fundamentally solved the drawbacks of lock industry security technology.

Description

Technical Field

[0001] This utility model relates to the field of smart lock technology, and in particular to a clutch deceleration drive structure for a lock body. Background Technology

[0002] As is well known, smart door locks are locked by motor drive. Existing smart lock gearboxes integrate complex transmission structures into the housing, enabling modular installation and bringing convenience to the smart door lock industry. However, the internal structure of existing gearboxes typically consists of a motor, a worm gear assembly, and a large end wheel. During use, the motor drives the worm gear to rotate, and the worm gear meshes with the large end wheel. When the motor is powered off, the worm gear assembly stops rotating, and the large end wheel is stuck in a non-rotating state. This poses a safety hazard to users escaping from indoors in an emergency, resulting in low reliability. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, this utility model discloses a clutch deceleration drive structure for a lock body.

[0004] To achieve the aforementioned objective, this utility model adopts the following technical solution:

[0005] A clutch deceleration drive structure for a lock body includes a lower housing, an upper cover, a motor, and a parachute wheel. The lower housing and the upper cover are fixedly connected by connecting screws in multiple screw holes at the edge. The motor is connected to the middle of the connecting plate at the lower part of the lower housing by fixing screws. The lower housing has grooves A and B arranged sequentially from front to back. A large end wheel assembly is connected to groove A.

[0006] The groove B has corresponding arc surfaces on both sides and a raised V-shaped surface on the front. The rear of the arc surfaces on both sides transitions to waist-shaped blocks extending towards the center. A vertical surface extends downward from the rear of the waist-shaped blocks. A concave hole is provided in the center between the arc surfaces on both sides. An umbrella wheel axle A is fixed in the concave hole. A conical spring, a swinging member, and a large wheel are connected sequentially from bottom to top on the umbrella wheel axle A. Both sides of the swinging member have protruding pillars, and a swing wheel is rotatably connected to each of the protruding pillars. Both sides of the swinging member are limited by the V-shaped surface. The large wheel stacked wheel below the large wheel meshes with the two swing wheels respectively.

[0007] A hollow shaft extends from the groove B between the two vertical surfaces. A parasol wheel is provided on the hollow shaft and connected by the parasol wheel axle B. The parasol wheel stacking wheel below the parasol wheel meshes with the large wheel. The parasol wheel is connected by a motor drive.

[0008] The clutch deceleration drive structure for the lock body is described in which the parasol wheel and the parasol wheel stack, as well as the large wheel and the large wheel stack, are all integral structures and concentrically arranged, and the outer diameter of the parasol wheel is larger than the outer diameter of the parasol wheel stack, and the outer diameter of the large wheel is larger than the outer diameter of the large wheel stack.

[0009] The clutch deceleration drive structure for the lock body includes an end wheel assembly comprising an end wheel, a stepped wheel shaft, a lower bearing, and an upper bearing. The lower bearing is connected in the through hole A in the middle of the groove A. The lower stepped shaft section of the stepped wheel shaft is connected to the center hole of the lower bearing. The outer end of the upper stepped shaft section of the stepped wheel shaft passes through the end wheel and the upper bearing inside the upper cover in sequence and is fixedly connected to the outer moving wheel outside the upper cover.

[0010] The clutch deceleration drive structure for the lock body has a limiting plane on the lower step shaft end of the stepped wheel shaft, and the limiting plane is configured to cooperate with the plane on the inner wall of the outer driving wheel.

[0011] The aforementioned clutch reduction drive structure for the lock body has a motor and a parasol wheel connected by a bevel gear transmission. A bevel gear is fixed on the output shaft of the motor, and the bevel gear meshes with the parasol wheel.

[0012] The clutch reduction drive structure for the lock body has a motor and a parachute connected by a worm gear assembly. A turbine shaft is fixed in a recess on one side of the lower housing. The worm gear assembly's turbine is rotatably connected to the turbine shaft. A worm is fixed on the motor's output shaft. The worm meshes with the turbine. The parachute meshes with the turbine stacked wheel on the turbine.

[0013] The clutch deceleration drive structure for the lock body is described above, wherein the turbine and the turbine stack are an integral structure and are concentrically arranged, and the outer diameter of the turbine stack is smaller than the outer diameter of the turbine.

[0014] Due to the adoption of the above technical solution, this utility model has the following beneficial effects:

[0015] 1. The clutch deceleration drive structure for lock bodies described in this utility model, through the structural arrangement of the groove B inside the housing, allows the swinging component on the parapet wheel axle A to swing left and right within the groove B. Furthermore, the V-shaped surface and waist-shaped block provide limiting, preventing the two balance wheels from being crushed one by one by the teeth due to the large angular force exerted on them when the swinging component is not under upper and lower limiting. This invention, through the combined use of the swinging component and the limiting function of the groove B, is safe and reliable, fundamentally solving the shortcomings of safety technology in the lock industry.

[0016] 2. The two balance wheels and the large wheel stacking wheel form an automatic two-way clutch structure, which makes up for the self-locking defect when the worm gear meshes with the worm. After the motor stops, a reverse drive signal will be provided by the control board after a few seconds, so that the two balance wheels and the end large wheel will no longer mesh, preventing the end large wheel from being stuck and unable to rotate. The invention has a simple and compact structure and high reliability.

[0017] 3. By installing a conical spring on the umbrella wheel axle A, the conical spring always exerts a pushing force on the swinging component, so that the two swing wheels on the swinging component are in a meshing state with the large wheel stacked wheel, thus avoiding the drawback of the turbine, turbine stacked wheel, and swinging component spinning idly, causing the entire external deceleration device to lose its function in opening and closing the lock body. Attached Figure Description

[0018] Figure 1 This is an exploded structural diagram of the present invention.

[0019] Figure 2 This is a structural schematic diagram of the large wheel of this utility model.

[0020] Figure 3 This is a schematic diagram of the structure of the parachute wheel of this utility model.

[0021] Figure 4 This is a schematic diagram of the structure of the lower shell of this utility model.

[0022] Figure 5 This is a schematic diagram of the structure of the motor-driven worm gear assembly transmission of this utility model.

[0023] In the diagram: 1. Lower housing; 2. Lower bearing; 3. Upper cover; 4. Upper bearing; 5. Motor; 6. Fixing screw; 7. Bevel gear; 8. Parasol wheel axle A; 9. Parasol wheel; 10. Parasol wheel stacked wheel; 11. Parasol wheel axle B; 12. Swinging component; 13. Conical spring; 14. Large wheel; 15. Large wheel stacked wheel; 16. Swing wheel; 17. Stepped wheel axle; 18. End large wheel; 19. External moving wheel; 20. Connecting screw; 21. Groove A; 22. Through hole A; 23. V-shaped surface; 24. Groove B; 25. Concave hole; 26. Hollow shaft; 27. Connecting plate; 28. Vertical surface; 29. ​​Worm gear; 30. Worm. Detailed Implementation

[0024] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0025] Combined with appendix Figure 1-5 The clutch deceleration drive structure for the lock body includes a lower housing 1, an upper cover 3, a motor 5, and a parachute wheel 9. The lower housing 1 and the upper cover 3 are fixedly connected by connecting screws 20 in multiple screw holes at the edge. The motor 5 is connected to the middle of the connecting plate 27 at the lower part of the lower housing 1 by fixing screws 6. The lower housing 1 has grooves A21 and B24 arranged sequentially from front to back. The end wheel assembly is connected to the groove A21.

[0026] The groove B24 has corresponding arc surfaces on both sides and a raised V-shaped surface 23 on the front. The rear of the arc surfaces on both sides transitions to waist-shaped blocks extending towards the center. A vertical surface 28 extends downward from the rear of the waist-shaped blocks. A recessed hole 25 is provided in the center between the arc surfaces on both sides. An umbrella wheel axle A8 is fixed in the recessed hole 25. A conical spring 13, a swing member 12, and a large wheel 14 are connected sequentially from bottom to top on the umbrella wheel axle A8. Both sides of the swing member 12 have protruding pillars, and a swing wheel 16 is rotatably connected to each of the protruding pillars. The two sides of the swing member 12 are limited by the V-shaped surface 23. The large wheel stack 15 below the large wheel 14 meshes with the two swing wheels 16 respectively. The umbrella wheel axle A8 is rotatably connected to the swing member 12 and serves as the fulcrum of the swing member 12. The swing wheels 16 on the protruding pillars on both sides of the swing member 12 can swing freely.

[0027] A hollow shaft 26 extends from the groove B24 between the two vertical surfaces 28. A parasol wheel 9 is provided on the hollow shaft 26 and connected by a parasol wheel axle B11. The parasol wheel stack 10 below the parasol wheel 9 meshes with the large wheel 14. The parasol wheel 9 is driven by a motor 5. The parasol wheel 9 and the parasol wheel stack 10, as well as the large wheel 14 and the large wheel stack 15, are all integral structures and concentrically arranged. The outer diameter of the parasol wheel 9 is larger than the outer diameter of the parasol wheel stack 10, and the outer diameter of the large wheel 14 is larger than the outer diameter of the large wheel stack 15.

[0028] Furthermore, the end wheel assembly includes an end wheel 18, a stepped wheel shaft 17, a lower bearing 2, and an upper bearing 4. The lower bearing 2 is connected in the through hole A22 in the middle of the groove A21. The lower stepped shaft section of the stepped wheel shaft 17 is connected to the center hole of the lower bearing 2. The outer end of the upper stepped shaft section of the stepped wheel shaft 17 passes through the end wheel 18 and the upper bearing 4 inside the upper cover 3 in sequence and is fixedly connected to the outer moving wheel 19 outside the upper cover 3. The outer moving wheel 19 is used to mesh and drive with the differential rotating component in the lock body. A limiting plane is provided on the lower stepped shaft end of the stepped wheel shaft 17. The limiting plane is matched with the plane on the inner wall of the outer moving wheel 19.

[0029] Furthermore, the motor 5 and the parasol wheel 9 are connected by a bevel gear 7. The bevel gear 7 is fixed on the output shaft of the motor 5 and meshes with the parasol wheel 9.

[0030] Furthermore, the motor 5 and the parachute wheel 9 are connected by a worm gear assembly. A turbine shaft is fixed in a recess on one side of the lower housing 1. The turbine is rotatably connected to the turbine shaft. A worm is fixed on the output shaft of the motor 5. The worm meshes with the turbine. The parachute wheel 9 meshes with the turbine stacked wheel on the turbine. The turbine and the turbine stacked wheel are an integral structure and are concentrically arranged. The outer diameter of the turbine stacked wheel is smaller than the outer diameter of the turbine.

[0031] The clutch deceleration drive structure for the lock body described in this utility model is implemented by inserting a handle into the middle hole of the end wheel 18. When in use, the motor 5 drives the worm gear or bevel gear 7 to rotate when it receives a high-level signal sent by the electronic main board of the lock body.

[0032] When driving the worm gear assembly, as shown in the attached... Figure 5 As shown, the worm gear 30 on the output shaft of motor 5 meshes with the turbine 29, driving the turbine stacked wheel to drive the parasol wheel 9 to rotate. The parasol wheel stacked wheel 10 below the parasol wheel 9 meshes with the large wheel 14. The large wheel stacked wheel 15 below the large wheel 14 meshes with the two swing wheels 16 respectively, thereby driving the two swing wheels 16 to rotate. To ensure that the two swing wheels 16 and the large wheel stacked wheel 15 are always in a meshed state, a conical spring 13 is installed on the parasol wheel shaft A8. The conical spring 13 always exerts an upward thrust on the swing member 12. Since the outer end of the parasol wheel shaft A8 is pressed against the inner surface of the upper cover 1 after the upper cover 1 and the lower cover 3 are fastened, a frictional force is generated between the outer surface of the large wheel 14 and the inner surface of the upper cover 1 under the thrust of the conical spring 13. Therefore, the two swing wheels 16 on the swing member 12 will always be in a meshed state with the large wheel stacked wheel 15 and will not disengage.

[0033] Among them, the two balance wheels 16 continuously swing left and right. During the swinging process, when they are driven by the strong meshing of the large wheel stack 15, an angular shear force is generated. This angular shear force will cause the balance wheel 16 and the end large wheel 18 to generate an infinite angular force, which can instantly crush the teeth on the large wheel stack 15 one by one. Therefore, a raised V-shaped surface 23 is provided in the lower housing. The inclined surfaces on both sides of the rear edge of the V-shaped surface 23 restrict the swing of the swing member 12 without restriction, so that the large wheel stack 15 and the end large wheel 18 can rotate stably.

[0034] When the two balance wheels 16 rotate, one rotates forward and the other rotates in reverse. One of the balance wheels 16 will automatically mesh with the end wheel 18 in the opposite direction. The end wheel 18 drives the outer moving wheel 19 outside the upper cover 3 to mesh with the differential rotating part inside the lock body through the rotation of the stepped wheel shaft 17, thereby completing the horizontal movement of the main lock tongue to unlock and lock.

[0035] When the motor 5 loses power, it will provide a reverse drive signal, which will cause the balance wheel 16 and the end wheel 18 to no longer mesh. The two balance wheels 16 are in a free state, which will cause the end wheel 18 to spin freely. In an emergency indoors, the door can be opened safely by pressing down the handle on the door lock. This avoids the situation in the prior art where the end wheel 18 is stuck and the door lock cannot be opened. The present invention is safe and reliable, simple and convenient to operate, and can quickly open and close the lock.

[0036] When driving the bevel gear 7 transmission, as shown in the attached... Figure 1As shown, the bevel gear 7 on the output shaft of motor 5 meshes with the parasol wheel 9, driving the parasol wheel 9 to rotate. The parasol wheel stack 10 below the parasol wheel 9 meshes with the large wheel 14. Other transmission structures and working principles are the same as those of the worm gear assembly.

[0037] The parts of this utility model not described in detail are existing technologies.

[0038] The embodiments selected herein for the purpose of disclosing the inventive objectives of this utility model are currently considered appropriate; however, it should be understood that this utility model is intended to include all variations and modifications of the embodiments that fall within the scope of this concept and utility model.

Claims

1. A clutch reduction drive structure for a lock body, comprising a lower housing, an upper cover, a motor, and a parachute wheel, characterized in that: The lower housing and the upper cover are fixedly connected by connecting screws in multiple screw holes at the edge. The motor is connected to the middle of the connecting plate at the bottom of the lower housing by fixing screws. The lower housing has grooves A and B arranged from front to back. The end wheel assembly is connected to groove A. The groove B has corresponding arc surfaces on both sides and a raised V-shaped surface on the front. The rear of the arc surfaces on both sides transitions to waist-shaped blocks extending towards the center. A vertical surface extends downward from the rear of the waist-shaped blocks. A concave hole is provided in the center between the arc surfaces on both sides. An umbrella wheel axle A is fixed in the concave hole. A conical spring, a swinging member, and a large wheel are connected sequentially from bottom to top on the umbrella wheel axle A. Both sides of the swinging member have protruding pillars, and a swing wheel is rotatably connected to each of the protruding pillars. Both sides of the swinging member are limited by the V-shaped surface. The large wheel stacked wheel below the large wheel meshes with the two swing wheels respectively. A hollow shaft extends from the groove B between the two vertical surfaces. A parasol wheel is provided on the hollow shaft and connected by the parasol wheel axle B. The parasol wheel stacking wheel below the parasol wheel meshes with the large wheel. The parasol wheel is connected by a motor drive.

2. The clutch deceleration drive structure for a lock body according to claim 1, characterized in that: The parasol wheels and their stacked wheels, as well as the large wheels and their stacked wheels, are all integral structures and concentrically arranged. The outer diameter of the parasol wheels is larger than that of the stacked wheels, and the outer diameter of the large wheels is larger than that of the stacked wheels.

3. The clutch deceleration drive structure for a lock body according to claim 1, characterized in that: The end wheel assembly includes an end wheel, a stepped wheel shaft, a lower bearing, and an upper bearing. The lower bearing is connected in the through hole A in the middle of the groove A. The lower stepped shaft section of the stepped wheel shaft is connected to the center hole of the lower bearing. The outer end of the upper stepped shaft section of the stepped wheel shaft passes through the end wheel and the upper bearing inside the upper cover in sequence and is fixedly connected to the outer moving wheel outside the upper cover.

4. The clutch deceleration drive structure for a lock body according to claim 3, characterized in that: A limiting plane is provided on the lower step shaft end of the stepped wheel shaft, and the limiting plane is set to cooperate with the plane on the inner wall of the outer moving wheel.

5. The clutch deceleration drive structure for a lock body according to claim 1, characterized in that: The motor and the parasol wheel are connected by a bevel gear drive. A bevel gear is fixed on the output shaft of the motor and meshes with the parasol wheel.

6. The clutch deceleration drive structure for a lock body according to claim 1, characterized in that: The motor and parachute wheel are connected by a worm gear assembly. A turbine shaft is fixed in a recess on one side of the lower part of the lower housing. The worm gear assembly's turbine is rotatably connected to the turbine shaft. A worm is fixed on the motor's output shaft. The worm meshes with the turbine. The parachute wheel meshes with the turbine stacked wheel on the turbine.

7. The clutch deceleration drive structure for a lock body according to claim 6, characterized in that: The turbine and turbine stack are an integral structure and are concentrically arranged, and the outer diameter of the turbine stack is smaller than the outer diameter of the turbine.

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