An electronic lock cylinder with a compact clutch structure

Abstract

The present invention aims at the problems of the existing electronic lock core and provides an electronic lock core with a compact clutch structure. By changing the internal composition of the clutch mechanism, the clutch mechanism is made more compact and small, and can be directly built into the lock core, thereby improving the safety of the lock core. It only needs an instantaneous milliampere current to work, and the microampere standby current can ensure the ultra-long service life of the battery. The motor shaft transmission spring and the slider transmission spring arranged inside the clutch mechanism also have energy storage and buffering functions, and the clutch mechanism can still be engaged or disengaged even when the motor is not working continuously. At the same time, the clutch mechanism of this structure also has a fault-tolerant function, making the electronic lock core more stable and reliable.

Description

Technical Field

[0001] The invention relates to the field of lock cores, and in particular to an electronic lock core with a compact clutch structure. Background Art

[0002] With the development of security industry technology, the functions of door locks are constantly being improved and updated. With the development of mobile Internet, people are paying more and more attention to the convenience and fashion performance of door locks on the basis of reliability and security. Therefore, electronic door locks are developing more and more, and various electronic door locks have appeared, bringing convenience and comfort to people's lives.

[0003] Because the door lock panel can be large enough and the lock body also has a lot of space, people can design a variety of mechanisms to prevent control modules, clutch modules, batteries and other accessories, but for the lock core, the internal space is too small, and it is difficult to place some necessary control mechanisms into the lock core. Therefore, the current lock core is still mainly mechanical lock core. Even if there are a few electronic lock cores, due to the clutch structure and battery volume issues, the outer knob is designed to be very large, affecting the overall appearance of the lock core installation. In addition, some installation occasions do not have enough space to accommodate larger knobs.

[0004] Moreover, the clutch mechanism of the existing electronic lock core does not have a fault-tolerant function. When the motor does not work continuously, the clutch mechanism cannot achieve the engagement and clutching actions. Therefore, the existing electronic lock core also has the problems of being prone to errors and inconvenient to use. Summary of the invention

[0005] In view of the problems of the existing electronic lock core, the present invention provides an electronic lock core with a compact clutch structure. The internal composition of the clutch mechanism is changed to make the clutch mechanism more compact and small, and can be directly built into the lock core, thereby improving the safety of the lock core. The clutch mechanism only requires an instantaneous milliampere current to work, and the microampere standby current ensures an extra-long service life of the battery. The motor shaft transmission spring and the slider transmission spring arranged inside the clutch mechanism also have energy storage and buffering effects, and the clutch mechanism can still be engaged or disengaged even when the motor is not working continuously. At the same time, the clutch mechanism of this structure also has a fault-tolerant function, thereby making the electronic lock core more stable and reliable.

[0006] In order to solve the above technical problems, the present invention provides an electronic lock core with a compact clutch structure, comprising a main body component, a front knob component and a rear knob component respectively located at the front end and the rear end of the main body component, and a rotating shaft component arranged inside the main body component, characterized in that: the front knob component comprises a front knob shell arranged at the front end of the main body component, a key plate arranged in the front knob shell, and a key arranged on the key plate and protruding from the front knob shell; the rear knob component comprises a rear knob shell arranged at the rear end of the main body component, a rear knob connecting shaft arranged in the rear knob shell, and a battery; the main body component comprises a main body and a rotor movably arranged in the middle of the main body; the rotating shaft assembly comprises a rotating shaft, a main board and a clutch mechanism; the main board is electrically connected to the battery and the key plate, respectively, and the rotor is transmission-connected to the rear knob connecting shaft and the clutch mechanism, respectively.

[0007] Furthermore, the clutch mechanism includes a motor disposed in the body and a clutch fixing seat mounted on an output shaft of the motor, the clutch fixing seat is transmission-connected to the rotor, and the motor is electrically connected to the main board.

[0008] Furthermore, the clutch mechanism also includes a slider and a marble arranged in the clutch fixing seat, the clutch fixing seat is provided with a side hole that can accommodate the marble, one end of the marble protrudes from the side hole and abuts against the slider, and a groove is provided on the side wall of the rotor corresponding to the position of the marble, and the motor drives the slider to reciprocate on the output shaft of the motor so that one end of the marble is stuck in the groove.

[0009] Furthermore, a motor shaft transmission spring and a slider transmission spring are sequentially sleeved on the output shaft of the motor, and the motor shaft transmission spring radially rotates together with the output shaft of the motor. A first square groove is axially arranged on the output shaft of the motor, and the free end of the motor shaft transmission spring is arranged in the first square groove. The motor shaft transmission spring performs axial reciprocating motion along the output shaft of the motor in the first square groove. A second square groove is arranged on the slider, and the free end of the slider transmission spring is arranged in the second square groove. The slider transmission spring performs axial linear reciprocating motion on the output shaft of the motor.

[0010] Furthermore, the front knob assembly also includes a front knob handle fixed to the front end of the body by screws, and the rear knob assembly also includes a rear knob handle fixed to the rear end of the body by screws.

[0011] Furthermore, a magnetic induction switch and a magnet cooperating with the magnetic induction switch are also provided on the main board. When the main board rotates inside the main body, the rotation angle of the main board can be determined by detecting the position of the magnet.

[0012] Furthermore, the electronic lock core of the compact clutch structure also includes a slip ring assembly arranged in the rear knob connecting shaft, the battery is arranged in the rear knob connecting shaft, the slip ring assembly includes a conductive column fixing seat sleeved in the rear knob connecting shaft and abutting against the rear knob connecting shaft, an insulating sleeve of a conductive column in the conductive column fixing seat, and a battery cover covering the outer end of the rear knob connecting shaft, one end of the conductive column abuts against the positive pole of the battery, the other end of the conductive column is provided with a positive pole brush, the inner side of the battery cover is provided with a spring sheet abutting against the negative pole of the battery, the conductive column fixing seat is provided with a negative pole brush, and the main board is electrically connected to the positive pole brush and the negative pole brush respectively.

[0013] Furthermore, a battery positive electrode insulating sheet is provided between the conductive column fixing seat and the battery, and a conductive column insulating sleeve is provided between the conductive column and the conductive column fixing seat.

[0014] Furthermore, the main board is also provided with a user management module, a Bluetooth module, a fingerprint module and a USB interface.

[0015] Furthermore, the keypad is also provided with an LED, a buzzer and a switch.

[0016] The present invention has the following beneficial effects:

[0017] The electronic lock core with a compact clutch structure in the present invention aims at solving the problems of existing electronic lock cores and provides an electronic lock core with a compact clutch structure. The internal composition of the clutch mechanism is changed to make the clutch mechanism more compact, and a motor shaft transmission spring and a slider transmission spring are arranged inside the clutch mechanism, so that the structure of the electronic lock core is more compact and small, and the fault tolerance function and energy storage function of the clutch mechanism can be realized, so that the function of the electronic lock core is more stable.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, which will become obvious from the following description, or may be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of the present application, and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 It is a schematic diagram of the overall structure of the electronic lock core in the present invention;

[0021] Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention;

[0022] Figure 3 A is a schematic cross-sectional view of the clutch mechanism;

[0023] Figure 4 b is a cross-sectional schematic diagram of the clutch mechanism;

[0024] Figure 5 A is a schematic diagram of a spring structure;

[0025] Figure 6 is a schematic diagram of the spring structure b;

[0026] Figure 7 It is a cross-sectional diagram of the slip ring assembly.

[0027] Among them: 1. front knob assembly, 2. body assembly, 3. shaft assembly, 4. rear knob assembly, 11. button, 12. button board, 13. front knob housing, 21. screw, 22. body, 23. rotor, 24. magnet, 31. USB interface, 32. motherboard, 33. shaft, 34. clutch mechanism, 35. magnetic induction switch, 41. rear knob housing, 42. battery, 43. slip ring assembly, 44. rear knob connecting shaft , 341, motor, 342, motor shaft transmission spring, 343, clutch fixing seat, 344, slider, 345, marble, 346, slider transmission spring, 347, first square groove, 348, second square groove, 431, brush fixing seat, 432, positive brush, 433, conductive column fixing seat, 434, battery positive electrode insulating sheet, 435, conductive column, 436, conductive column insulating sleeve, 437, negative electrode brush, 438, spring. DETAILED DESCRIPTION

[0028] In order to more fully understand the technical content of the present invention, the present invention will be further introduced and illustrated in conjunction with the accompanying drawings and specific embodiments. It should be noted that the terms "upper", "lower", "front", "back", "left", "right", etc. indicate directions or positional relationships that are not given the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0030] Example 1

[0031] As shown in Figures 1-2, an electronic lock cylinder with a compact clutch structure includes a body component 2, a front knob component 1 and a rear knob component 4 located at the front and rear ends of the body component 2, respectively, and a rotating shaft component 3 arranged inside the body component 2. The front knob component 1 includes a front knob housing 13 arranged at the front end of the body component 2, a key plate 12 arranged in the front knob housing 13, and a key 11 arranged on the key plate 12 and protruding from the front knob housing 13. The rear knob component 4 includes a rear knob housing 41 arranged at the rear end of the body component 2, a rear knob connecting shaft 44 arranged in the rear knob housing 41, and a battery 42. The body component 2 includes a body 22 and an active The rotor 23 is movably arranged in the middle of the body 22, and the shaft assembly 3 includes a shaft 33, a main board 32 and a clutch mechanism 34. The main board 32 is electrically connected to the battery 42 and the key board 12 respectively, and the rotor 23 is transmission-connected to the rear knob connecting shaft 44 and the clutch mechanism 34 respectively. The main board 32 receives the input command of the key board 12. When the key board 12 inputs the correct password, the main board 32 controls the clutch mechanism 34 to clutch or engage. After the clutch mechanism 34 engages, the rotor 23 and the shaft 33 are linked to realize the unlocking function. After the clutch mechanism 34 is clutched, the rotor 23 and the shaft 33 are disengaged to realize the locking function. The function of opening and closing the door is realized by controlling the rotation of the rotor 23.

[0032] like Figure 3-4 As shown, the clutch mechanism 34 includes a motor 341 disposed in the main body 22, and a clutch fixing seat 343 mounted on the output shaft of the motor 341. The clutch fixing seat 343 is transmission-connected to the rotor 23, and the motor 341 is electrically connected to the main board 32. When the main board 32 issues an unlocking or locking command, the motor 341 electrically connected to the main board 32 rotates to drive the clutch mechanism 34 to engage or clutch.

[0033] Specifically, the clutch mechanism 34 also includes a slider 344 and a marble 345 arranged in the clutch fixing seat 343. The clutch fixing seat 343 is provided with a side hole that can accommodate the marble 345. One end of the marble 345 protrudes from the side hole and abuts against the slider 344. A groove is provided on the side wall of the rotor 23 at the position corresponding to the marble 345. The motor 341 drives the slider to reciprocate on the output shaft of the motor so that one end of the marble 345 is stuck in the groove. When unlocking, the motor 341 rotates clockwise to drive the slider 344 to move to the right. During the movement of the slider 344 to the right, the inclined surface of the slider 344 will push the marble 345 outward. When the slider 344 moves to the rightmost side, the contact part between the slider 344 and the marble 345 becomes a plane. After the marble 345 slides into the groove inside the rotor 23, the clutch fixing seat 343 and the rotor 23 are linked. The clutch fixing seat 343 is fixed on the rotating shaft 33, so the rotating shaft 33 and the rotor 23 are linked to achieve the function of unlocking. When locking, the motor 341 rotates counterclockwise to drive the slider 344 to move to the left. When the slider 344 moves to the far left, the contact part between the slider 344 and the marble 345 becomes an inclined surface. At this time, if the rotor 23 rotates under external force, because there is no support of the slider 344 inside, the marble 345 will slide into the clutch fixing seat 343. At this time, the clutch fixing seat 343 and the rotor 23 are disengaged. The clutch fixing seat 343 is fixed on the rotating shaft 33, so the rotating shaft 33 and the rotor 23 are disengaged to achieve the locking function.

[0034] like Figure 5-6As shown, a motor shaft transmission spring 342 and a slider transmission spring 346 are sequentially sleeved on the output shaft of the motor 341, and the motor shaft transmission spring 342 radially rotates together with the output shaft of the motor 341. A first square groove 347 is axially arranged on the output shaft of the motor 341, and both free ends of the motor shaft transmission spring 342 are arranged in the first square groove 347. The motor shaft transmission spring 342 performs axial reciprocating motion along the output shaft of the motor 341 in the first square groove 347. A second square groove 348 is arranged on the slider 344, and both free ends of the slider transmission spring 346 are arranged in the second square groove 348. The slider transmission spring 346 performs axial linear reciprocating motion on the output shaft of the motor 341. When unlocking, the motor 341 rotates clockwise to drive the motor shaft transmission spring 342 to rotate together. At this time, the spiral line of the motor shaft transmission spring 342 will be screwed into the right side of the slider transmission spring 346, so that the motor shaft transmission spring 342 moves to the left, until the spiral line of the motor shaft transmission spring 342 is screwed into the left side of the slider transmission spring 346 and the motor shaft transmission spring 342 is stopped by the first square groove 347. Due to the position limitation of the first square groove 347 and the spring elastic force, the motor shaft transmission spring 342 will not continue to move. At this time, the motor shaft transmission spring 342 continues to rotate to push the slider transmission spring 346 to the right, thereby driving the slider 344 to move to the right. When the slider 344 moves to the far right, if the motor 341 continues to rotate, at this time, because the motor shaft transmission spring 342 has completely rotated to the left side of the slider transmission spring 346, the motor will drive the motor shaft transmission spring 342 to idle; when locking, the motor 341 rotates counterclockwise to drive the motor shaft When the first and second cams 347 are in contact with the first cam 348, the second cam 349 is in contact with the first cam 349. When the first and second cams 349 are in contact with the first cam 348, the second cam 349 is in contact with the first cam 349.

[0035] In special cases, when the main board 32 issues an unlock command, if the groove of the rotor 23 is not at the position corresponding to the marble 345, the marble 345 cannot slide outward, and the slider 344 cannot move to the right. At this time, the energy can be stored by the elastic force of the spring. The energy of the motor 341 will be stored in the elastic potential energy of the spring. When the rotor 23 subsequently rotates to the correct position, the elastic force of the spring will push the slider 344 to the right, thereby realizing the engagement of the clutch mechanism 34. In another special case, when the main board 32 issues a lock command, the marble 345 cannot slide outward, and the slider 344 cannot move to the right. After that, the rotor 23 is acted upon by an external force, and pressure is applied to the slider 344 through the marble 345. The slider 344 cannot move to the left. At this time, energy can be stored by relying on the elastic force of the spring. The energy of the motor will be stored in the elastic potential energy of the spring. When the external force is released, the elastic force of the spring will push the slider to the left, thereby realizing the clutch. The motor shaft transmission spring 342 and the slider transmission spring 346 have energy storage and buffering effects, and the engagement or clutch action of the clutch mechanism 34 can still be realized even when the motor is not working continuously.

[0036] Specifically, the front knob assembly 1 also includes a front knob handle fixed to the front end of the body 22 by a screw 21, and the rear knob assembly 4 also includes a rear knob handle fixed to the rear end of the body 22 by a screw 21. After the clutch mechanism 34 is engaged, the front knob handle or the rear knob handle can be rotated to control the rotor of the lock core, thereby realizing the function of opening and closing the door, making opening and closing the door more convenient.

[0037] Specifically, a magnetic induction switch 35 and a magnet 24 cooperating with the magnetic induction switch 35 are also provided on the main board 32. The magnet 24 can sense the magnetic induction switch 35. The magnetic induction switch 35 is used to detect the position of the rotating shaft 33 and feed back to the main board 32, so as to detect the rotation position of the lock core.

[0038] like Figure 7As shown, the electronic lock core of the compact clutch structure also includes a slip ring assembly 43 arranged in the rear knob connecting shaft 44, the battery 42 is arranged in the rear knob connecting shaft 44, the slip ring assembly 43 includes a conductive column fixing seat 433 sleeved in the rear knob connecting shaft 44 and abutting against it, a conductive column 435 insulatingly sleeved in the conductive column fixing seat 433, and a battery cover covering the outer end of the rear knob connecting shaft 44, one end of the conductive column 435 abuts against the positive electrode of the battery 42, and the other end of the conductive column 435 is provided with a positive electrode brush 432, and the inner side of the battery cover is provided with a spring 438 abutting against the negative electrode of the battery 42, and the spring and the rear The knob connecting shaft 44 is connected to the conductive column fixing seat 433, and the conductive column fixing seat 433 is provided with a negative brush 437. The main board 32 is electrically connected to the positive brush 432 and the negative brush 437 respectively. When the positive brush 432 rotates around the conductive column 435, the positive brush 432 and the negative brush 437 can continuously receive power from the battery. The positive brush 432 and the negative brush 437 are connected to the main board, thereby achieving continuous current when the main board and the rear knob assembly are not synchronized. The battery 42 is a small high-density lithium-manganese battery, which can ensure the external dimensions while having a high service life.

[0039] Specifically, a battery positive electrode insulating sheet 434 is provided between the conductive column fixing seat 433 and the battery 42, which can prevent the positive electrode of the battery 42 from contacting the rear knob connecting shaft 44 and causing a short circuit. The battery positive electrode insulating sheet 434 also has the function of preventing the battery from being installed upside down. When the battery 42 is installed upside down, the negative electrode of the battery 42 cannot contact the conductive column 435, and the entire circuit is not energized. A conductive column insulating sleeve 436 is provided between the conductive column 435 and the conductive column fixing seat 433.

[0040] Specifically, the main board 32 is also provided with a user management module, a Bluetooth module, a fingerprint module and a USB interface 31, which can be unlocked wirelessly through a mobile phone, or the password can be shared with friends. The USB interface 31 can be powered by a mobile power supply when the battery is too low and the battery has not been replaced.

[0041] Specifically, the keypad 12 is also provided with an LED, a buzzer and a switch. When the unlocking password is input, the LED and the buzzer will respond to prompt the operation status. The front rotating assembly is also provided with a waterproof rubber ring, which can effectively prevent rain, dust, etc. from entering the interior of the lock core.

[0042] The technical solutions provided by the embodiments of the present invention are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for general and technical personnel in the field, according to the embodiments of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An electronic lock cylinder with a compact clutch structure, comprising a body assembly, a front knob assembly and a rear knob assembly located at the front and rear ends of the body assembly respectively, and a shaft assembly arranged inside the body assembly, characterized in that: The front knob assembly comprises a front knob housing provided at the front end of the body assembly, a keypad provided in the front knob housing, and a key provided on the keypad and protruding from the front knob housing; the rear knob assembly comprises a rear knob housing provided at the rear end of the body assembly, a rear knob connecting shaft provided in the rear knob housing, and a battery; the body assembly comprises a body and a rotor movably provided in the middle of the body; the shaft assembly comprises a shaft, a main board, and a clutch mechanism; the main board is electrically connected to the battery and the keypad respectively; and the rotor is drivingly connected to the rear knob connecting shaft and the clutch mechanism respectively; The clutch mechanism comprises a motor disposed in the body and a clutch fixing seat sleeved on the output shaft of the motor, the clutch fixing seat is transmission-connected to the rotor, and the motor is electrically connected to the main board; The clutch mechanism also includes a slider and a marble arranged in the clutch fixing seat, the clutch fixing seat is provided with a side hole for accommodating the marble, one end of the marble protrudes from the side hole and abuts against the slider, a groove is provided on the side wall of the rotor at a position corresponding to the marble, and the motor drives the slider to reciprocate on the output shaft of the motor so that one end of the marble is stuck in the groove; A motor shaft transmission spring and a slider transmission spring are sequentially sleeved on the output shaft of the motor, and the motor shaft transmission spring rotates together with the output shaft of the motor. A first square groove is axially arranged on the output shaft of the motor, and the free end of the motor shaft transmission spring is arranged in the first square groove. The motor shaft transmission spring performs axial reciprocating motion along the output shaft of the motor in the first square groove. A second square groove is arranged on the slider, and the free end of the slider transmission spring is arranged in the second square groove. The slider transmission spring performs axial linear reciprocating motion on the output shaft of the motor.

2. The electronic lock cylinder with a compact clutch structure according to claim 1, characterized in that: The front knob assembly also includes a front knob handle fixed to the front end of the body by screws, and the rear knob assembly also includes a rear knob handle fixed to the rear end of the body by screws.

3. The electronic lock cylinder with a compact clutch structure according to claim 2, characterized in that: The main board is also provided with a magnetic induction switch and a magnet matched with the magnetic induction switch. When the main board rotates inside the main body, the rotation angle of the main board can be determined by detecting the position of the magnet.

4. The electronic lock cylinder with a compact clutch structure according to claim 3, characterized in that: It also includes a slip ring assembly arranged in the rear knob connecting shaft, the battery is arranged in the rear knob connecting shaft, the slip ring assembly includes a conductive column fixing seat sleeved in the rear knob connecting shaft and abutting against the rear knob connecting shaft, a conductive column insulatingly sleeved in the conductive column fixing seat, and a battery cover covering the outer end of the rear knob connecting shaft, one end of the conductive column abuts against the positive pole of the battery, the other end of the conductive column is provided with a positive pole brush, the inner side of the battery cover is provided with a spring sheet abutting against the negative pole of the battery, the conductive column fixing seat is provided with a negative pole brush, and the mainboard is electrically connected to the positive pole brush and the negative pole brush respectively.

5. The electronic lock cylinder with a compact clutch structure according to claim 4, characterized in that: A battery positive electrode insulating sheet is provided between the conductive post fixing seat and the battery, and a conductive post insulating sleeve is provided between the conductive post and the conductive post fixing seat.

6. The electronic lock cylinder with a compact clutch structure according to any one of claims 1 to 5, characterized in that: The main board is also provided with a user management module, a Bluetooth module, a fingerprint module and a USB interface.

7. The electronic lock cylinder with a compact clutch structure according to claim 6, characterized in that: The keypad is also provided with an LED, a buzzer and a switch.

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