Clutch speed reducer of intelligent lock body

Abstract

A clutch speed reducer of an intelligent lock relates to the technical field of intelligent locks and comprises an upper cover, a lower cover, a motor, a tail end large wheel and a worm and gear assembly, the upper cover and the lower cover are buckled with each other, the motor is in linkage with the worm and gear assembly, a round hole is formed in the upper portion of the inner surface of the lower cover, and the tail end large wheel connected through a copper sleeve is arranged on the round hole. A swing assembly is arranged on one side of the lower portion of the tail end large wheel. The balance wheel assembly, the two balance wheels and the bridge wheel are arranged 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, a reverse rotation driving signal provided by a control main board several seconds after a motor stops rotating is generated, the two balance wheels are not meshed with a large wheel at the tail end any more, and therefore the self-locking defect is overcome. The device is simple and compact in structure and high in reliability, the conical spring always has a thrust effect on the swing part, the two balance wheels on the swing part are meshed with the bridge wheel in a stacked mode, and the phenomenon that the turbine, the turbine wheel in a stacked mode and the swing part idle is avoided.

Description

Technical Field

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

[0002] At present, the commonly used external reduction groups in the domestic smart lock industry are mostly placed on the back panel of the lock. The external reduction group consists of a motor, a worm gear assembly and a terminal large wheel. When the motor is powered off, the worm gear assembly stops rotating, and the terminal large wheel engaged with the worm gear assembly 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 has low reliability. Summary of the Invention

[0003] In order to overcome the deficiencies in the background technology, the present invention discloses a clutch deceleration device for an intelligent lock body.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: A clutch deceleration device for an intelligent lock body comprises an upper cover and a lower cover that are interlocked, a motor, a terminal large wheel and a worm gear assembly. The motor and the worm gear assembly are linked together. A circular hole is opened on the upper inner surface of the lower cover. The terminal large wheel connected by a copper sleeve is provided on the circular hole. A swing assembly is provided on one side of the lower part of the terminal large wheel. The swing assembly comprises a swing member, a conical spring, two balance wheels and a balance wheel shaft. The swing member is in the shape of an elongated strip, the upper end of which is set as a plane, the lower end surface is set as a "V"-shaped surface, and on both sides of the swing member and the lower part between the two sides. Both are provided with through holes. After the swinging part shaft fixed on the inner surface of the lower cover is sleeved with a conical spring, it passes through the through holes at the lower part between the two sides of the swinging part. A balance wheel shaft is fixed in the through holes on both sides of the swinging part. The two balance wheels are respectively connected to the balance wheel shaft in rotation. Either of the two balance wheels is engaged with the end large wheel, and the swinging angle of the balance wheel shaft is limited by the limit assembly. A bridge wheel is installed at the outer end of the swinging part shaft. The bridge wheel is matched with the worm gear assembly. A bridge wheel stacking wheel is provided under the bridge wheel, and the bridge wheel stacking wheels are respectively engaged with the two balance wheels.

[0005] The clutch deceleration device of the smart lock body has multiple pins fixed at intervals on the edge of the lower cover, the upper cover is buckled with the lower cover through the pins, and the inner surface of the upper cover is in contact with the outer surface of the bridge wheel.

[0006] The clutch and reduction device of the smart lock body, the motor is fixedly connected to the extension plate on the right side of the bottom of the lower cover, its output shaft is fixedly connected to the worm of the worm gear assembly, the turbine of the worm gear assembly is connected to the turbine shaft near the left side of the worm, and the worm and the turbine are meshed for transmission, and the turbine stacked wheel outside the turbine is meshed for transmission.

[0007] The clutch deceleration device of the intelligent lock body, the limit assembly is fixed on the inner surface of the lower cover, including an upper limit block and a lower limit block, the upper limit block is arranged in a step shape, the front step is an inverted triangle, and arc-shaped lower openings are provided on both sides of the rear step of the upper limit block. There are two lower limit blocks, and the arc-shaped upper openings of the two lower limit blocks are respectively arranged to correspond to the two arc-shaped lower openings of the upper limit block. The balance wheel shaft is respectively located between the two corresponding arc-shaped openings, and the height of the arc-shaped lower opening on the left and the lower limit block on the left is higher than the height of the arc-shaped lower opening on the right and the lower limit block on the right.

[0008] The clutch deceleration device of the intelligent lock body is configured such that both sides of the rear step of the lower limit block are configured as inverted hooks, the two lower limit blocks are configured as hooks, and the two inverted hooks of the lower limit blocks are respectively configured to correspond to the two lower limit blocks above and below.

[0009] In the clutch deceleration device of the intelligent lock body, the small diameter end of the conical spring is arranged downward.

[0010] Due to the adoption of the above technical solution, the present invention has the following beneficial effects: 1. The clutch deceleration device of the smart lock body of the present invention, by providing a balance wheel assembly, two balance wheels and a bridge wheel stacked wheel form an automatic two-way clutch structure, which compensates for the self-locking defect when the worm gear meshes and the worm is working. 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 terminal large wheel no longer mesh, preventing the terminal large wheel from being stuck and unable to rotate. The present invention has a simple and compact structure and high reliability. 2. The present invention installs a conical spring on the shaft of the swing part. The conical spring always exerts a thrust on the swing part, so that the two balance wheels on the swing part are in a meshing state with the bridge wheel stacked wheels, avoiding the disadvantage that the turbine, turbine stacked wheels and swing part will rotate idly, causing the entire reduction device to lose the function of opening and closing the lock body; the present invention has a compact and reasonable structure. In an emergency indoors, the door lock handle can be used to habitually press down to open the door safely, and the end large wheel will not get stuck and become unable to open the door when unlocking.

[0011] 3. The present invention sets a limit assembly, which is used to limit the swinging part. The swinging part is rotatably connected to the swinging part shaft. The upper limit blocks and the lower limit blocks on the left and right sides serve to limit the upper and lower positions of the balance wheel shaft, thereby avoiding the situation where the two balance wheels are subjected to a large angular force when the swinging part has no upper and lower limits, 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 assembly and the limit assembly, and fundamentally solves the drawbacks of safety technology in the lock industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the present invention.

[0013] Figure 2 It is a schematic diagram of the installation structure of various components in the lower cover of the present invention.

[0014] Figure 3 It is a structural schematic diagram of the bridge wheel of the present invention.

[0015] Figure 4 It is a schematic diagram of the inner structure of the lower cover of the present invention.

[0016] Figure 5 It is a placement diagram of the conical spring of the present invention.

[0017] In the figure: 1. Upper cover; 2. Pin shaft; 3. Lower cover; 4. End large wheel; 5. Square hole; 6. Bridge wheel; 7. Worm; 8. Turbine; 9. Motor; 10. Swinging member shaft; 11. Balance wheel; 12. Swinging member; 13. Conical spring; 14. Balance wheel shaft; 15. Bridge wheel stacking wheel; 16. Copper sleeve; 17. Turbine stacking wheel; 18. Turbine shaft; 19. Lower limit block; 20. Upper limit block. DETAILED DESCRIPTION

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

[0019] Combined with attachment Figure 1-5 The clutch and deceleration device of the smart lock body includes an interlocking upper cover 1 and a lower cover 3, a motor 9, an end large wheel 4 and a worm gear assembly. The motor 9 is linked to the worm gear assembly. A circular hole is provided on the upper inner surface of the lower cover 3, and an end large wheel 4 connected by a copper sleeve 16 is provided on the circular hole. A swing assembly is provided on one side of the lower part of the end large wheel 4. The swing assembly includes a swing member 12, a conical spring 13, two balance wheels 11 and a balance wheel shaft 14. The swing member 12 is long and has an upper end set to a plane and a lower end face set to a "V" shape. There are through holes on both sides of the swing member 12 and the lower part between the two sides. After the swing member shaft 10 fixed on the inner surface of the lower cover 3 is sleeved with a conical spring 13, it passes through the two sides of the swing member 12. The through-holes at the lower part between the sides are provided with balance shafts 14 fixed in the through-holes on both sides of the swinging member 12. The two balance wheels 11 are rotatably connected to the balance shafts 14 respectively. Any one of the two balance wheels 11 is meshed with the end large wheel 4, and the balance shaft 14 limits the swing angle through the limit assembly. A bridge wheel 6 is installed at the outer end of the swinging member shaft 10. The bridge wheel 6 is matched with the worm gear assembly. A bridge wheel stacking wheel 15 is provided under the bridge wheel 6. The bridge wheel stacking wheel 15 is respectively meshed with the two balance wheels 11; wherein, the swinging member shaft 10 is fixed on the lower cover 3 and is rotatably connected to the swinging member 12. The swinging member shaft 10 is the fulcrum of the swinging member 12, and the balance shafts 14 on both sides are the moving points. The two sides of the swinging member 12 can swing freely; The limit assembly is fixed on the inner surface of the lower cover 3, and includes an upper limit block 20 and a lower limit block 19. The upper limit block 20 is arranged in a step shape, and the front step is an inverted triangle. There are arc-shaped lower openings on both sides of the rear step of the upper limit block 20. There are two lower limit blocks 19. The arc-shaped upper openings of the two lower limit blocks 19 are respectively arranged to correspond to the two arc-shaped lower openings of the upper limit block 20. The balance wheel shaft 14 is respectively located between the two corresponding arc-shaped openings. The height of the arc-shaped lower opening on the left and the lower limit block 19 on the left is higher than the height of the arc-shaped lower opening on the right and the lower limit block 19 on the right.

[0020] Furthermore, a plurality of pins 2 are fixed at intervals on the edge of the lower cover 3 , and the upper cover 3 is buckled with the lower cover 3 via the pins 2 .

[0021] Furthermore, the motor 9 is fixedly connected to the extension plate on the right side of the bottom of the lower cover 3, and its output shaft is fixedly connected to the worm 7 of the worm gear assembly. The turbine 8 of the worm gear assembly is connected to the turbine shaft 18 near the left side of the worm 7, and the worm 7 is engaged with the turbine 8 for transmission. The turbine folded wheel 17 outside the turbine 8 is engaged with the bridge wheel 6 for transmission. The turbine 8 and the turbine folded wheel 17 are an integrated structure and are concentrically arranged, and the outer diameter of the turbine folded wheel 17 is smaller than the outer diameter of the turbine 8.

[0022] Furthermore, both sides of the rear step of the lower limit block 19 are set to an inverted hook shape, the two lower limit blocks 19 are set to a hook shape, and the two inverted hooks of the lower limit block 19 are respectively set to correspond to the two lower limit blocks 19 above and below.

[0023] Furthermore, a bridge wheel stacking wheel 15 is provided below the bridge wheel 6. The bridge wheel stacking wheel 15 and the bridge wheel 6 are an integral structure and are concentrically arranged. The outer diameter of the bridge wheel stacking wheel 15 is smaller than the outer diameter of the bridge wheel 6.

[0024] To implement the clutch deceleration device of the smart lock body described in the present invention, a square rod is inserted into the square hole in the middle of the end large wheel 4. The square hole can be an 8mm×8mm square hole or an 8mm×3mm rectangular hole, which is convenient for inserting square rods of different shapes. When in use, when the motor 9 receives the high-level signal sent by the lock body electronic motherboard to drive the worm gear assembly to rotate, the turbine stacked wheel 17 is engaged with the bridge wheel 6, and the bridge wheel stacked wheel 15 under the bridge wheel 6 rotates to drive the two balance wheels 11 to rotate. In order to ensure the two The two balance wheels 11 and the bridge wheel stack 15 are always in meshing state. By installing a conical spring 13 on the swing member shaft 10, the conical spring 13 always exerts an upward thrust on the swing member 12. After the upper cover 1 and the lower cover 3 are buckled together, the outer end of the swing member shaft 10 is pressed tightly against the inner surface of the upper cover 1. Under the thrust of the conical spring 13, friction is generated between the outer surface of the bridge wheel 6 and the inner surface of the upper cover 1. Therefore, the two balance wheels 11 on the swing member 12 are always in meshing state with the bridge wheel stack 15. When the two balance wheels 11 rotate, one rotates forward and the other rotates backward. One of the balance wheels 11 will automatically engage the end large wheel 4 in the reverse direction. The square rod in the square hole in the middle of the end large wheel 4 drives the clutch in the lock body to lock and unlock safely. When the motor 9 is powered off, it will provide a reverse driving signal, so that the balance wheel 11 and the end large wheel 4 are no longer engaged, and the two balance wheels 11 are in a free state, so that the end large wheel 4 is in an idling state. In an emergency indoors, the handle on the door lock square rod can be pressed down to open the door safely, avoiding the situation in the prior art where the end large wheel 4 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.

[0025] The parts not described in detail in this invention are prior art.

[0026] 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 deceleration device for an intelligent lock body, comprising an upper cover and a lower cover that interlock together, a motor, a terminal large wheel, and a worm gear assembly, characterized by: The motor is linked to the worm gear assembly, and a circular hole is opened on the upper inner surface of the lower cover, and an end large wheel connected by a copper sleeve is provided on the circular hole, and a swing assembly is provided on the lower side of the end large wheel, and the swing assembly includes a swing member, a conical spring, two balance wheels and a balance wheel shaft. The swing member is long and narrow, and its upper end is set as a plane, and the lower end surface is set as a "V"-shaped surface. There are through-holes on both sides of the swing member and the lower part between the two sides. After the swing member shaft fixed on the inner surface of the lower cover is sleeved with a conical spring, it passes through the through-holes in the lower part between the two sides of the swing member, and a balance wheel shaft is fixed in the through-holes on both sides of the swing member. The two balance wheels are rotatably connected to the balance wheel shaft respectively, either of the two balance wheels is meshed with the end large wheel, and the swing wheel shaft is limited to the swing angle by a limit assembly, and a bridge wheel is installed at the outer end of the swing member shaft, and the bridge wheel is matched with the worm gear assembly. A bridge wheel stack is provided under the bridge wheel, and the bridge wheel stack is meshed with the two balance wheels respectively.

2. The clutch deceleration device of the smart lock body according to claim 1 is characterized in that: A plurality of pins are fixed at intervals on the edge of the lower cover, the upper cover is buckled with the lower cover through the pins, and the inner surface of the upper cover is in contact with the outer surface of the bridge wheel.

3. The clutch deceleration device of the smart lock according to claim 1, characterized in that: The motor is fixedly connected to the extension plate on the right side of the bottom of the lower cover, and its output shaft is fixedly connected to the worm of the worm gear assembly. The turbine of the worm gear assembly is connected to the turbine shaft near the left side of the worm, and the worm and the turbine are meshed for transmission, and the turbine stacked wheels outside the turbine are meshed for transmission.

4. The clutch deceleration device of the smart lock according to claim 1, characterized in that: The limit assembly is fixed on the inner surface of the lower cover, and includes an upper limit block and a lower limit block. The upper limit block is arranged in a step shape, and the front step is an inverted triangle. There are arc-shaped lower openings on both sides of the rear step of the upper limit block. There are two lower limit blocks. The arc-shaped upper openings of the two lower limit blocks are respectively arranged to correspond to the two arc-shaped lower openings of the upper limit block. The balance wheel shaft is respectively located between the two corresponding arc-shaped openings. The height of the arc-shaped lower opening on the left and the lower limit block on the left is higher than the height of the arc-shaped lower opening on the right and the lower limit block on the right.

5. The clutch deceleration device of the smart lock according to claim 4 is characterized in that: Both sides of the rear step of the lower limit block are arranged in an inverted hook shape, the two lower limit blocks are arranged in a hook shape, and the two inverted hooks of the lower limit block are respectively arranged corresponding to the two lower limit blocks.

6. The clutch deceleration device of the smart lock according to claim 1, characterized in that: The small diameter end of the conical spring is positioned downward.

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