Clutch driving structure for intelligent lock body

Abstract

A clutch driving structure for an intelligent lock relates to the technical field of intelligent locks and comprises a lower cover, an upper cover, a motor and a bridge wheel, the lower cover and the upper cover are fixedly connected through screws B and locking screws in a plurality of screw holes in the edge, the motor is fixed in the middle of an extension plate on the lower portion of the lower cover, and a concave hole B, a concave hole A and a shaft sleeve are sequentially arranged in the lower cover from front to back. The concave hole B is connected with a tail end large wheel assembly; the two balance wheels and the large wheel are stacked to form an automatic two-way clutch structure, the self-locking defect when a worm wheel is meshed with a worm to work is overcome, copper sleeves are fixed in holes in the two sides of a center hole of the large wheel, magnets are fixed in the copper sleeves, the magnets can continuously generate suction force with the balance wheels on protruding columns, the balance wheels are meshed with the large wheel at the tail end all the time, and the gear falling phenomenon cannot occur; through cooperative use of the swing piece and the V-shaped block for limiting, the safety and reliability are achieved, and the defects of the safety technology in the lockset industry are fundamentally overcome.

Description

Technical Field

[0001] The present invention relates to the technical field of smart locks, and in particular to a clutch drive structure for a smart lock body. Background Art

[0002] As is known, smart door locks are locked by motor drive. Existing smart lock gearboxes integrate complex transmission structures into the box body to achieve modular installation, which brings convenience to the smart door lock industry. However, the interior of the existing gearbox is usually composed of a motor, a worm gear assembly and an end large wheel. When in use, the motor drives the worm gear to rotate, and the worm gear engages with the end large wheel. When the motor is powered off, the worm gear assembly stops rotating, and the end large wheel is in a stuck state and will not rotate. This poses an unsafe hidden danger to users in an emergency escape from the room, and the reliability is low. Summary of the Invention

[0003] In order to overcome the deficiencies in the background technology, the present invention discloses a clutch drive structure for a smart lock body.

[0004] A clutch drive structure for a smart lock body includes a lower cover, an upper cover, a motor, and a bridge pulley. The lower cover and the upper cover are fixedly connected by screws B and locking screws in multiple screw holes on the edge. The motor is fixed to the middle of the extension plate below the lower cover. The interior of the lower cover is provided with concave hole B, concave hole A, and a shaft sleeve from front to back. The end large wheel assembly is connected to concave hole B. The concave hole A is located at the center of the concave surface in the middle of the lower cover. The concave surface is in the shape of an inverted "8". A raised V-shaped block is fixed on the upper concave surface. The two sides of the rear edge of the V-shaped block are set as inclined surfaces. A horizontal surface is connected between the two inclined surfaces. The swing member shaft is fixed in the concave hole A. The conical spring, the middle hole of the swing member and the center hole of the large wheel pass through the swing member shaft from bottom to top. There are openings on both sides of the center hole of the large wheel. A copper sleeve is fixed in the opening. A magnet is fixed in the copper sleeve. Bosses are provided on both sides of the upper side of the swing member. The bosses are rotatably connected to the balance wheels. The upper sides of the swing member are respectively limited by the inclined surfaces on both sides of the lower side of the V-shaped block. The large wheel stacked wheels under the large wheel are respectively engaged with the two balance wheels. A bridge wheel connected through a bridge wheel shaft is provided on the shaft sleeve, and the bridge wheel stacked wheel below the bridge wheel is engaged with the large wheel, and the bridge wheel 12 is connected by a motor drive.

[0005] The clutch drive structure for the smart lock body is characterized in that the bridge wheel and the bridge wheel stacked wheel, and the large wheel and the large wheel stacked wheel are respectively an integrated structure and are concentrically arranged. The outer diameter of the bridge wheel stacked wheel is smaller than the outer diameter of the bridge wheel, and the outer diameter of the large wheel stacked wheel is smaller than the outer diameter of the large wheel.

[0006] The clutch drive structure for the smart lock body, the end big wheel assembly includes an end big wheel, a step wheel axle, a lower bearing and an upper bearing. The end big wheel is meshed with any balance wheel and is connected to the lower bearing in the recessed hole B. The lower step shaft section of the step wheel axle passes through the end big wheel and is connected to the center hole of the lower bearing. A limiting plane is provided on the lower step shaft section, and the limiting plane is matched with the plane in the center hole of the end big wheel. The upper step shaft section of the step wheel axle passes through the upper bearing in the upper cover and is fixedly connected to the outer moving wheel outside the upper cover. A limiting plane is provided on the upper step shaft section, and the limiting plane is matched with the plane on the center hole of the outer moving wheel.

[0007] The clutch drive structure for the smart lock body has a mounting hole in the middle of the extension plate, and screw holes are provided on both sides of the mounting hole. The motor is fixedly connected to the extension plate through screws A in the screw holes on both sides, and the output shaft of the motor passes through the mounting hole and is located inside the lower cover.

[0008] The clutch drive structure for the smart lock body has a turbine shaft fixed in the shaft hole on one side of the lower cover, a turbine is rotatably connected to the turbine shaft, a worm fixed on the motor output shaft is meshed with the turbine for transmission, and the bridge wheel is meshed with the turbine folded wheel above the turbine. The turbine and the turbine folded wheel are an integrated structure and are concentrically arranged, and the outer diameter of the turbine folded wheel is smaller than the outer diameter of the turbine.

[0009] In the clutch drive structure for the smart lock body, the small diameter section of the conical spring is placed downward and contacts the inner surface of the lower cover, and the large diameter section of the conical spring contacts the bottom of the swinging member.

[0010] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: Due to the adoption of the above technical solution, the present invention has the following beneficial effects: 1. The clutch and deceleration drive structure for the lock body described in the present invention has copper sleeves fixed in the openings on both sides of the center hole of the large wheel, and magnets fixed in the copper sleeves. When the large wheel rotates, the copper sleeves and the magnets are driven to rotate at the same time. The magnets contact the bosses on the swinging part, and the magnets generate magnetic attraction on the bosses. The attraction causes the swinging part to rotate synchronously with the large wheel, so that the balance wheel on the bosses engages with the end large wheel. Since the swinging part is limited by the inclined surface of the V-shaped block, the large wheel continues to rotate, which causes the magnets to continuously generate attraction with the balance wheel on the bosses, so that the balance wheel is always engaged with the end large wheel, and the gear shifting phenomenon will not occur.

[0011] 2. The clutch deceleration drive structure for the lock body described in the present invention has a V-shaped block arranged in the lower cover, and the swinging member on the swinging member shaft is limited by the two inclined surfaces of the V-shaped block when swinging left and right, thereby avoiding the situation where the two balance wheels are subjected to a large angular force when the swinging member is not limited, thereby instantly crushing the teeth on the two balance wheels one by one; the present invention is safe and reliable through the coordinated use of the swinging member and the V-shaped block limiter, and fundamentally solves the drawbacks of safety technology in the lock industry.

[0012] 3. The two balance wheels and the stacked large wheels form an automatic two-way clutch structure, which makes up for the self-locking defect when the worm gear is engaged. After the motor stops, the control motherboard will provide a reverse drive signal after a few seconds, so that the two balance wheels and the end large wheel will no longer be engaged, preventing the end large wheel from being stuck and unable to rotate. The present invention has a simple and compact structure and high reliability.

[0013] 4. The present invention installs a conical spring on the swing member shaft. The conical spring always exerts a thrust on the swing member, so that the two balance wheels on the swing member are in a meshing state with the large wheel stack, avoiding the disadvantage that the turbine, turbine stack, and swing member will rotate idly, causing the entire external deceleration device to lose its function in opening and closing the lock body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the explosion structure of the present invention.

[0015] Figure 2 It is a structural schematic diagram of the big wheel of the present invention.

[0016] Figure 3 It is a structural schematic diagram of the lower cover of the present invention.

[0017] In the figure: 1. Lower cover; 2. Lower bearing; 3. Upper cover; 4. Upper bearing; 5. Motor; 6. Screw A; 7. Worm; 8. Turbine shaft; 9. Turbine; 10. Turbine stacked wheel; 11. Bridge wheel shaft; 12. Bridge wheel; 13. Bridge wheel stacked wheel; 14. Large wheel; 15. Large wheel stacked wheel; 16. Balance wheel; 17. Swinging member shaft; 18. Conical spring; 19. Swinging member; 20. End large wheel; 21. Stepped wheel shaft; 22. Outer driving wheel; 23. Copper sleeve; 24. Magnet; 25. Screw B; 26. Locking screw; 27. V-block; 28. Concave surface; 29. Concave hole A; 30. Bushing; 31. Shaft hole; 32. Screw hole; 33. Mounting hole; 34. Extension plate; 35. Concave hole B. DETAILED DESCRIPTION

[0018] The present invention can be explained in detail by the following examples, the purpose of which is to disclose the present invention and to protect all technical improvements within the scope of the present invention.

[0019] Combined with attachment Figure 1-3The clutch drive structure for the smart lock body includes a lower cover 1, an upper cover 3, a motor 5 and a bridge wheel 12. The lower cover 1 and the upper cover 3 are fixedly connected by screws B25 and locking screws 26 in multiple screw holes at the edge. The motor 5 is fixed to the middle of the extension plate 34 at the lower part of the lower cover 1. A mounting hole 33 is opened in the middle of the extension plate 34. Screw holes 32 are respectively provided on both sides of the mounting hole 33. The motor 5 is fixedly connected to the extension plate 34 by screws A6 in the screw holes 32 on both sides. The output shaft of the motor 5 passes through the mounting hole 33 and is located inside the lower cover 1; a concave hole B35, a concave hole A29 and a shaft sleeve 30 are provided in sequence inside the lower cover 1 from front to back, and the end large wheel assembly is connected to the concave hole B35; The concave hole A29 is located at the center of the concave surface 28 in the middle of the lower cover 1. The concave surface 28 is in the shape of an inverted "8". A raised V-shaped block 27 is fixed to the upper concave surface. The two sides of the rear edge of the V-shaped block 27 are set as inclined surfaces. A horizontal surface is connected between the two inclined surfaces. The swing member shaft 17 is fixed in the concave hole A29. The conical spring 18, the middle hole of the swing member 19 and the center hole of the large wheel 14 pass through the swing member shaft 17 from bottom to top. The small diameter section of the conical spring 18 is placed downward and contacts the inner surface of the lower cover 1, and the large diameter section of the conical spring 18 contacts the bottom of the swing member 19. There are openings on both sides of the center hole of the wheel 14, in which a copper sleeve 23 is fixed. A magnet 24 is fixed in the copper sleeve 23. There are bosses on both sides of the upper surface of the swinging member 19, and the bosses are rotatably connected to the balance wheel 16. The upper and lower sides of the swinging member 19 are respectively limited by the inclined surfaces on the lower sides of the V-shaped block 27. The large wheel stacked wheels 15 under the large wheel 14 are respectively engaged with the two balance wheels 16; wherein, the swinging member shaft 17 is rotatably connected to the swinging member 19. The swinging member shaft 17 is the fulcrum of the swinging member 12 and is arranged in the middle hole of the swinging member 12. The balance wheels 16 on the bosses on both sides of the swinging member 12 can swing freely. A bridge wheel 12 connected to the shaft sleeve 30 through the bridge wheel shaft 11 is provided. The bridge wheel stacked wheel 13 below the bridge wheel 12 is engaged with the large wheel 14. The bridge wheel 12 is driven and connected by the motor 5.

[0020] Furthermore, the bridge wheel 12 and the bridge wheel stacked wheel 13, the large wheel 14 and the large wheel stacked wheel 15 are all integral structures and are concentrically arranged. The outer diameter of the bridge wheel stacked wheel 13 is smaller than the outer diameter of the bridge wheel 12, and the outer diameter of the large wheel stacked wheel 15 is smaller than the outer diameter of the large wheel 14.

[0021] Furthermore, the end large wheel assembly includes an end large wheel 20, a step wheel axle 21, a lower bearing 2 and an upper bearing 4. The end large wheel 20 is engaged with any balance wheel 16, and the lower bearing 2 is connected to the recessed hole B35. The lower step shaft section of the step wheel axle 21 passes through the end large wheel 20 and is connected to the center hole of the lower bearing 2. A limiting plane is provided on the lower step shaft section, and the limiting plane is matched with the plane in the center hole of the end large wheel 20. The upper step shaft section of the step wheel axle 21 passes through the upper bearing 4 in the upper cover 3 and is fixedly connected to the outer moving wheel 22 outside the upper cover 3. A limiting plane is provided on the upper step shaft section, and the limiting plane is matched with the plane on the center hole of the outer moving wheel 22. The outer moving wheel 22 is used to engage and transmit with the differential rotating member in the lock body.

[0022] Furthermore, a turbine shaft is fixed in the shaft hole 31 on one side of the lower part of the lower cover 1, and a turbine 9 is rotatably connected to the turbine shaft. The worm 7 fixed on the output shaft of the motor 5 is meshed with the turbine 9 for transmission, and the bridge wheel 12 is meshed with the turbine folded wheel 10 on the turbine 9. The turbine 9 and the turbine folded wheel 10 are an integral structure and are concentrically arranged, and the outer diameter of the turbine folded wheel 10 is smaller than the outer diameter of the turbine 9.

[0023] The clutch drive structure for the smart lock body of the present invention is implemented by inserting the handle into the middle hole of the end large wheel 20. When in use, when the motor 5 receives the high-level signal sent by the lock body electronic motherboard, it drives the worm gear to rotate; When driving the worm gear, if attached Figure 1 As shown, the worm 7 on the output shaft of the motor 5 is meshed with the turbine 9 for transmission, driving the turbine folded wheel 10 to drive the bridge wheel 12 to rotate, the bridge wheel folded wheel 13 below the bridge wheel 12 is meshed with the large wheel 14, and the large wheel folded wheel 15 below the large wheel 14 is meshed with the two balance wheels 16 respectively, thereby driving the two balance wheels 16 to rotate. In order to ensure that the two balance wheels 16 and the large wheel folded wheels 15 are always in a meshing state, a conical spring 18 is installed on the swing member shaft 17. The conical spring 18 always has an upward thrust on the swing member 19. After the upper cover 1 and the lower cover 3 are buckled together, the outer end of the large wheel 14 is pressed tightly against the inner surface of the upper cover 1. Under the thrust of the conical spring 18, friction is generated between the outer surface of the large wheel 14 and the inner surface of the upper cover 1. Therefore, the two balance wheels 16 on the swing member 19 will always be in a meshing state with the large wheel folded wheels 15. Among them, the two balance wheels 16 are constantly swinging left and right. When they are driven by the strong meshing of the large wheel stacking wheels 15 during the swinging process, an angular shear force will be generated. This angular shear force will cause the balance wheel 16 and the end large wheel 20 to generate an infinite angular force, which can instantly crush the teeth on the large wheel stacking wheels 15 one by one. Therefore, a raised V-shaped block 27 is set in the lower shell. The inclined surfaces on both sides of the rear edge of the V-shaped block 27 limit the swinging member 19 from swinging indefinitely, so that the large wheel stacking wheels 15 and the end large wheel 20 can rotate stably.

[0024] When the two balance wheels 16 rotate, one rotates forward and the other rotates reversely. One of the balance wheels 16 will automatically engage the end large wheel 20 in the reverse direction, and the end large wheel 20 drives the step wheel shaft 21 to rotate, so that the outer driving wheel 19 on the step wheel shaft 21 engages and transmits with the differential rotating member in the lock body, thereby completing the horizontal movement of unlocking and locking the main lock tongue.

[0025] When the motor 5 is powered off, it will provide a reverse drive signal, so that the balance wheel 16 and the end large wheel 20 are no longer engaged, and the two balance wheels 16 are in a free state, so that the end large wheel 20 is in an idling state. In an emergency indoors, the handle on the door lock can be pressed down to open the door safely, avoiding the situation in the prior art where the end large wheel 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.

[0026] Among them, copper sleeves 23 are fixed in the openings on both sides of the center hole of the large wheel 14, and magnets 24 are fixed in the copper sleeves 23. When the large wheel 14 rotates, the copper sleeves 23 and the magnets 24 are driven to rotate at the same time. While rotating, the magnets 24 will contact the bosses on the swinging member 19, and the magnets 24 will generate magnetic attraction on the bosses. The attraction will cause the swinging member 19 to rotate synchronously with the large wheel 14, so that the balance wheel 16 on this boss is engaged with the end large wheel 20. Since the swinging member 19 is limited by the inclined surface of the V-block 27, the large wheel 14 continues to rotate, which will cause the magnets 24 to continuously generate attraction with the balance wheel 16 on the boss, so that the balance wheel 16 is always engaged with the end large wheel 20, and the gear will not fall out. The provision of the copper sleeve 23 can slow down and weaken the magnetic force of the magnet 24, thereby weakening the magnetic force.

[0027] The parts not described in detail in this invention are prior art.

[0028] The embodiments selected herein for the purpose of disclosing the invention are presently considered suitable, but it should be understood that the invention is intended to include all variations and modifications of the embodiments that fall within the scope of the concept and invention.

Claims

1. A clutch drive structure for a smart lock body, comprising a lower cover, an upper cover, a motor and a bridge pulley, characterized by: The lower cover and the upper cover are fixedly connected by screws B and locking screws in multiple screw holes on the edge. The motor is fixed to the middle of the extension plate below the lower cover. Inside the lower cover, there are recessed holes B, recessed holes A, and shaft sleeves from front to back. The end large wheel assembly is connected to recessed hole B. Concave hole A is located at the center of the concave surface in the middle of the lower cover. The concave surface is in the shape of an inverted "8". A raised V-shaped block is fixed to the upper concave surface. The two sides of the rear edge of the V-shaped block are set as inclined surfaces. A horizontal surface is connected between the two inclined surfaces. The swing member shaft is fixed in concave hole A. The conical spring, the middle hole of the swing member and the center hole of the large wheel pass through the swing member shaft from bottom to top. There are openings on both sides of the center hole of the large wheel. Copper sleeves are fixed in the openings. Magnets are fixed in the copper sleeves. Bosses are provided on both sides of the upper side of the swing member. Balance wheels are rotatably connected to the bosses. The upper sides of the swing member are respectively limited by the inclined surfaces on both sides of the lower side of the V-shaped block. The large wheel stacked wheels under the large wheel are respectively engaged with the two balance wheels. A bridge wheel connected through a bridge wheel shaft is provided on the shaft sleeve, and the bridge wheel stacked wheel below the bridge wheel is engaged with the big wheel, and the bridge wheel 12 is connected by motor drive.

2. The clutch drive structure for the smart lock body according to claim 1 is characterized in that: The wheel and the bridge wheel stacked wheel, the large wheel and the large wheel stacked wheel are respectively an integral structure and are concentrically arranged. The outer diameter of the bridge wheel stacked wheel is smaller than the outer diameter of the bridge wheel, and the outer diameter of the large wheel stacked wheel is smaller than the outer diameter of the large wheel.

3. The clutch drive structure for a smart lock according to claim 1, characterized in that: The end big wheel assembly includes an end big wheel, a step wheel axle, a lower bearing and an upper bearing. The end big wheel is meshed with any balance wheel and is connected to the lower bearing in the concave hole B. The lower step shaft section of the step wheel axle passes through the end big wheel and is connected to the center hole of the lower bearing. A limiting plane is provided on the lower step shaft section, and the limiting plane is matched with the plane in the center hole of the end big wheel. The upper step shaft section of the step wheel axle passes through the upper bearing in the upper cover and is fixedly connected to the outer moving wheel outside the upper cover. A limiting plane is provided on the upper step shaft section, and the limiting plane is matched with the plane on the center hole of the outer moving wheel.

4. The clutch drive structure for a smart lock according to claim 1, characterized in that: A mounting hole is provided in the middle of the extension plate, and screw holes are provided on both sides of the mounting hole. The motor is fixedly connected to the extension plate through screws A in the screw holes on both sides, and the output shaft of the motor passes through the mounting hole and is located inside the lower cover.

5. The clutch drive structure for a smart lock according to claim 1, characterized in that: A turbine shaft is fixed in the shaft hole on one side of the lower part of the lower cover, and a turbine is rotatably connected to the turbine shaft. The worm fixed on the motor output shaft is meshed with the turbine for transmission, and the bridge wheel is meshed with the turbine folded wheel on the turbine. The turbine and the turbine folded wheel are an integrated structure and are concentrically arranged, and the outer diameter of the turbine folded wheel is smaller than the outer diameter of the turbine.

6. The clutch drive structure for a smart lock according to claim 1, characterized in that: The small diameter section of the conical spring is placed downward and contacts the inner surface of the lower cover, and the large diameter section of the conical spring contacts the lower surface of the swing member.

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