CN112112490B

CN112112490B - Driving mechanism for door lock and door lock

Info

Publication number: CN112112490B
Application number: CN202011073937.3A
Authority: CN
Inventors: 苏祺云; 梁忠祥
Original assignee: Shenzhen Kaidisi Intelligent Technology Co ltd
Current assignee: Shenzhen Kaidisi Intelligent Technology Co ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2023-06-23
Anticipated expiration: 2040-09-30
Also published as: CN112112490A

Abstract

The application provides a driving mechanism for a door lock and the door lock. Wherein the driving mechanism comprises a motor. The planetary gear assembly comprises a gear ring, a planet wheel and a sun wheel, the motor is rotationally connected with the sun wheel, the gear ring is provided with an accommodating space, the planet wheel and part of the sun wheel are arranged in the accommodating space, and the planet wheel is rotationally connected between the sun wheel and the gear ring. The retainer is arranged on one side of the planetary gear assembly, the gear ring and the sun gear are both abutted against the retainer, and the planetary gears are connected with the retainer; when the gear ring is in a fixed state, the sun gear rotates under the drive of the motor. When the sun gear is in a fixed state, the gear ring can be controlled to rotate. The door can be opened and closed by adopting a motor to control the sun gear to rotate or directly controlling the gear ring to rotate, so that the door lock control method is increased, the problem that the door cannot be opened and closed due to motor damage in a single motor lock is avoided, and the difficulty and risk of opening the door are reduced.

Description

Driving mechanism for door lock and door lock

Technical Field

The application belongs to the technical field of door lock structures, and particularly relates to a driving mechanism for a door lock and the door lock.

Background

As the population increases, the number of houses increases. Door locks are one of the important structures for controlling the opening and closing of houses. So the expectation and the requirement of people on door locks are also increasing. Currently, a door lock usually adopts a motor lock, namely, a lock cylinder is driven by a motor to move so as to realize door opening and closing. However, once the motor or the driving mechanism of the motor lock fails, the whole motor lock cannot move, so that a user cannot open the door from the room, and the difficulty and risk of opening the door are greatly increased.

Disclosure of Invention

In view of this, the present application provides in a first aspect a drive mechanism for a door lock, the drive mechanism comprising:

a motor;

the planetary gear assembly comprises a gear ring, a planet wheel and a sun wheel, the motor is rotationally connected with the sun wheel, the gear ring is provided with an accommodating space, the planet wheel and part of the sun wheel are arranged in the accommodating space, and the planet wheel is rotationally connected between the sun wheel and the gear ring; and

the retainer is arranged on one side of the planetary gear assembly, the gear ring and the sun gear are both abutted against the retainer, and the planetary gears are connected with the retainer; when the gear ring is in a fixed state, the sun gear rotates under the drive of the motor so as to enable the planet gears to rotate relative to the gear ring; alternatively, when the sun gear is in a fixed state, the ring gear may be controlled to rotate so that the planet gears rotate relative to the sun gear.

The driving mechanism provided by the first aspect of the application enables the motor to be rotationally connected with the sun gear through the planetary gear assembly, namely, the motor can control the rotation of the sun gear. And secondly, the planetary gears can be connected with the retainer, namely, the planetary gears can control the rotation of the retainer. In addition, this application accessible ring gear, planet wheel and sun gear's mutually support and finally make the planet wheel rotate, and then drive the holder rotation, thereby finally drive the lock core motion of connecting the holder and realize the switch door.

The gear ring, the planet wheel and the sun wheel are particularly matched, and the sun wheel can rotate under the drive of the motor when the gear ring is in a fixed state, so that the planet wheel rotates relative to the gear ring. The door can be opened and closed by a motor. When the motor fails and the sun gear cannot rotate, the sun gear is in a fixed state, and the planetary gear can rotate relative to the sun gear by controlling the gear ring to rotate. Thus, even when the motor fails, the door can still be opened and closed by controlling the gear ring to rotate.

In summary, the driving mechanism provided by the application realizes the door opening and closing by adopting a motor to control the sun gear to rotate or directly controlling the gear ring to rotate, so that the method for controlling the door lock is increased, the problem that the door cannot be opened and closed due to the damage of the motor in a single motor lock is avoided, and the difficulty and the risk of opening the door are reduced.

The sun gear comprises a first sub sun gear and a second sub sun gear which are coaxially arranged, and the motor is rotationally connected with the first sub sun gear; the second sub-sun gear is arranged in the accommodating space and is rotationally connected with the planet gears.

The driving mechanism further comprises a gear support, the gear support is rotatably connected to one side of the gear ring, and the gear support is in a fixed state or a rotating state.

The driving mechanism further comprises a handle support and a shell, wherein the handle support is connected with the gear support in a sliding mode, and the sliding direction of the handle support is perpendicular to the rotating direction of the gear ring;

the utility model discloses a handle support, including casing, handle support, motor, planetary gear subassembly, handle support, motor, planetary gear subassembly, the casing is interior has the accommodation space, motor, and planetary gear subassembly all locates in the accommodation space, the intercommunication has been seted up on the casing the through-hole of accommodation space, part the handle support runs through the through-hole, just set up the spacing groove on the at least partial lateral wall of through-hole, the spacing groove with the handle support mutually supports in order to restrict the rotation of handle support.

The driving mechanism further comprises a second elastic piece, one end of the second elastic piece is abutted against the handle support, the other end of the second elastic piece is abutted against the gear support, and when the handle support moves towards the direction close to the gear support, the second elastic piece is in a compressed state.

The handle support is provided with a first accommodating groove at one side close to the gear support, and part of the second elastic piece is arranged in the first accommodating groove.

The motor is arranged on a first side of the planetary gear assembly, the gear support is arranged on a second side of the planetary gear assembly, and the first side and the second side are arranged oppositely.

Wherein the driving mechanism further comprises a universal joint which is rotatably connected to the other side of the retainer; the cage has a first rotational direction, the gimbal has a second rotational direction, and the first rotational direction intersects the second rotational direction; the universal joint is provided with a second accommodating groove which is used for connecting the lock cylinder.

The universal joint comprises a first rotating part and a second rotating part, wherein the first rotating part is arranged in the first rotating space, and the first rotating part is rotationally connected with the protruding part;

the first rotating part is internally provided with a second rotating space, the second rotating part is arranged in the second rotating space and is rotationally connected with the first rotating part, and the second rotating part is internally provided with the second accommodating groove;

the first rotating part is provided with a first sub-rotating direction, the second rotating part is provided with a second sub-rotating direction, the first sub-rotating direction is intersected with the second sub-rotating direction, and the first sub-rotating direction and the second sub-rotating direction are intersected with the second rotating direction.

The embodiment of the application also provides a door lock, which comprises a lock cylinder and the driving mechanism provided by the embodiment of the application, wherein the lock cylinder is connected to the other side of the retainer, and the lock cylinder moves under the rotation of the retainer, so that the door is opened and closed.

The door lock provided by the embodiment of the application can realize the door opening and closing by adopting the motor to control the sun gear to rotate or directly controlling the gear ring to rotate in two modes, so that the method for controlling the door lock is increased, the problem that the door cannot be opened and closed due to the damage of the motor in a single motor lock is avoided, and the difficulty and risk of opening the door are reduced.

Drawings

In order to more clearly describe the technical solutions in the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be described below.

Fig. 1 is a schematic structural diagram of a driving mechanism according to an embodiment of the present application.

Fig. 2 is a schematic diagram of a driving mechanism according to an embodiment of the present application.

Fig. 3 is a schematic cross-sectional view taken along A-A in fig. 1.

Fig. 4 is a schematic structural view of a driving mechanism according to another embodiment of the present application.

Fig. 5 is a partially exploded view of a drive mechanism according to an embodiment of the present application.

Fig. 6 is a schematic structural view of a driving mechanism according to another embodiment of the present application.

Fig. 7 is a schematic view of a driving mechanism according to another embodiment of the present application with a housing removed.

Fig. 8 is a schematic cross-sectional view of a driving mechanism along A-A in another embodiment of the present application.

Fig. 9 is a schematic view of a gear rack in an embodiment of the present application with rotation.

Fig. 10 is a top view of a drive mechanism according to an embodiment of the present application.

Fig. 11 is a schematic cross-sectional view of a driving mechanism along A-A in a further embodiment of the present application.

Fig. 12 is a schematic cross-sectional view of a driving mechanism along A-A in a further embodiment of the present application.

Fig. 13 is a top view of a drive mechanism according to another embodiment of the present application.

Fig. 14 is a schematic view of the universal joint according to an embodiment of the present application when the universal joint rotates in the first sub-rotation direction.

Fig. 15 is a schematic view of the gimbal in one embodiment of the present application when rotating in a second sub-rotation direction.

Description of the reference numerals:

the planetary gear mechanism comprises a driving mechanism-1, a motor-10, a planetary gear assembly-20, a gear ring-21, an accommodating space-211, a planet wheel-22, a sun gear-23, a first sub-sun gear-231, a second sub-sun gear-232, a first side-24, a second side-25, a retainer-30, a transmission mechanism-40, a first gear-41, a second gear-42, a third gear-43, a protective shell-44, a gear bracket-50, a handle bracket-51, a limiting part-52, a second elastic piece-53, a first accommodating groove-54, a shell-60, an accommodating space-61, a through hole-62, a limiting groove-63, a universal joint-70, a second accommodating groove-71, a protruding part-72, a first rotating space-73, a first rotating part-74, a second rotating part-75, a second rotating space-76, a through hole-77, a rotating shaft-78 and a protecting part-79.

Detailed Description

The following are preferred embodiments of the present application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present application and are intended to be within the scope of the present application.

Before the technical scheme of the application is described, the technical problems in the related art are described in detail.

Door locks are one of the important structural members on doors, which can control the door to open and close rooms, spaces, etc. In the prior art, a purely mechanical door lock structure is generally adopted, namely, a key is utilized to drive a structure in a door lock to move so as to realize opening and closing of a door. With the progress of technology and the continuous change of demands of users, electronic locks are now in the field of view of people and are noted by users. The electronic lock does not need to use a key under the conventional condition, and can automatically drive the structure in the door lock to move through the built-in circuit by only face recognition, password input, fingerprint input, voice recognition and other methods, so that the door can be opened and closed. This brings great convenience and user experience. However, once the motor, the circuit structure or other structural components in the motor lock are out of order, a problem occurs in a certain link in the motor lock, and the motor lock can not work normally, so that a user outside the door can not open the door to enter a room through a door opening method of the electronic lock, and can only enter the room through a door opening method of the key. And users in the door cannot open the door to leave the room, and only a violent dismantling method is adopted for the door or the door lock at the moment, so that irreversible loss is caused to the door, and unlocking difficulty and risk are greatly increased.

Referring to fig. 1-3 together, fig. 1 is a schematic structural diagram of a driving mechanism according to an embodiment of the present application. Fig. 2 is a schematic diagram of a driving mechanism according to an embodiment of the present application. Fig. 3 is a schematic cross-sectional view taken along A-A in fig. 1. The present embodiment provides a drive mechanism 1 for a door lock, the drive mechanism 1 including a motor 10. The planetary gear assembly 20, the planetary gear assembly 20 includes a gear ring 21, a planet wheel 22, and a sun gear 23, the motor 10 is rotationally connected to the sun gear 23, the gear ring 21 has an accommodating space 211, the planet wheel 22 and a part of the sun gear 23 are both disposed in the accommodating space 211, and the planet wheel 22 is rotationally connected between the sun gear 23 and the gear ring 21. A holder 30, wherein the holder 30 is provided on the planetary gear assembly 20 side, the ring gear 21 and the sun gear 23 are both abutted against the holder 30, and the planetary gears 22 are connected to the holder 30; when the gear ring 21 is in a fixed state, the sun gear 23 rotates under the drive of the motor 10, so that the planet gears 22 rotate relative to the gear ring 21; alternatively, when the sun gear 23 is in a fixed state, the planetary gears 22 may be rotated relative to the sun gear 23 by controlling the ring gear 21 to rotate.

The driving mechanism 1 provided in this embodiment is one of important structural members of the door lock. The door lock mainly comprises a driving mechanism 1, a lock cylinder and a lock body. The lock body is arranged in the door, the lock core is arranged in the lock body, and the pulling wheel of the lock core can drive the lock tongue of the lock body to extend or retract so as to realize opening and closing of the door. The driving mechanism 1 is arranged outside the door and is connected with the lock core in the door, and the movement of the driving mechanism can drive the lock core to move, so that the extension and retraction of the lock tongue are realized.

The driving mechanism 1 provided in the present embodiment includes a motor 10 and a power source. The motor 10 is electrically connected to a power source, and the power source can provide needed energy for the motor 10, so that the motor 10 can work and rotate after receiving the electric energy. Alternatively, the power source may comprise a non-rechargeable battery or a rechargeable battery.

The driving mechanism 1 provided in this embodiment further includes a planetary gear assembly 20. Wherein the planetary gear assembly 20 is comprised of a plurality of structural members. For example, the planetary gear assembly 20 includes a ring gear 21, a planet gear 22, and a sun gear 23. The names of the three structural members are all technical terms of the professionals of the gears in the industry of the person skilled in the art. The gear ring 21 is a ring gear, an accommodating space 211 is provided in the gear ring 21, and the gear ring 21 has a ring of internal teeth and a ring of external teeth. In addition, the planet gears 22 and the sun gear 23 each have a ring of external teeth, and the planet gears 22 and a part of the sun gear 23 are disposed in the accommodating space 211. It is also understood that some of the sun gears 23 are disposed in the receiving space 211, and the rest of the sun gears 23 are disposed outside the receiving space 211. As for the motor 10, the sun gear 23 is rotatably connected. It can be understood that the motor 10 is rotatably connected to the sun gear 23 outside the accommodating space 211 and drives the sun gear 23 in the accommodating space 211 to rotate. Second, the motor 10 may be rotationally connected to the sun gear 23 such that the motor 10 is directly connected to the sun gear 23. Alternatively, another transmission mechanism 40 is further provided between the motor 10 and the sun gear 23, one end of the transmission mechanism 40 is rotatably connected to the motor 10, and the other end of the transmission mechanism 40 is rotatably connected to the sun gear 23. The motor 10 rotates to drive the transmission mechanism 40 to rotate, and the transmission mechanism 40 rotates to drive the sun gear 23 to rotate. In this case, the motor 10 can be regarded as being indirectly rotationally connected to the sun gear 23. As for the specific structure of the transmission mechanism 40, the present application will be described later.

Next, the planetary gear 22 is rotatably connected between the sun gear 23 and the ring gear 21. It is also understood that one end of the planet wheel 22 is rotatably connected to the internal teeth of the ring gear 21 and the opposite end of the planet wheel 22 is rotatably connected to the external teeth of the sun gear 23. The three gears of the ring gear 21, the planet gears 22 and the sun gear 23 link the whole planet gear 22 assembly together through the planet gears 22. Alternatively, the number of the planetary gears 22 may be plural, and each planetary gear 22 is disposed at a uniform interval. For example, the number of the planetary gears 22 is 3, and each planetary gear 22 is disposed 120 ° apart. This improves the stability of the rotation of the planet wheel 22 assembly and the cage 30.

The driving mechanism 1 provided in this embodiment further includes a cage 30, wherein the cage 30 is a bracket for mounting the planetary gear assembly 20 and other structural members. The planetary gear assembly 20 is disposed on one side of the mounting member and the lock cylinder is disposed on the other side of the mounting member. The ring gear 21 and the sun gear 23 of the planetary gear assembly 20 are both abutted against the cage 30, and the planetary gears 22 are connected to the cage 30. In this way, the state of motion of the carrier 30 is not affected when the ring gear 21 and the sun gear 23 rotate. The planet 22 is connected to the cage 30, so that rotation of the planet 22 drives the cage 30 to rotate together. Rotation of the holder 30 may further move the lock cylinder.

The above is the mechanical structure of the driving mechanism 1 provided in the present embodiment. As to how the movement of the drive mechanism 1 is achieved in particular. In this embodiment, the planet gears 22 can be finally rotated by the mutual cooperation of the gear ring 21, the planet gears 22 and the sun gear 23, so as to drive the retainer 30 to rotate, and finally drive the lock cylinder connected with the retainer 30 to move, thereby realizing door opening and closing. The specific matching method of the ring gear 21, the planet gear 22 and the sun gear 23 is that one of the ring gear 21 and the sun gear 23 is fixed, and the other of the ring gear 21 and the sun gear 23 and the planet gear 22 rotate, so that the planet gear 22 can revolve around the sun gear 23 and further drive the retainer 30 to rotate. For example, when the ring gear 21 is in a fixed state, the sun gear 23 is driven by the motor 10 to rotate, so that the planetary gear 22 rotates relative to the ring gear 21, and the cage 30 is driven to rotate, so that the door can be opened and closed by the motor 10. When the motor 10 fails and cannot work normally, the sun gear 23 cannot rotate, and the sun gear 23 is in a fixed state, so that the planetary gear 22 can rotate relative to the sun gear 23 by directly controlling the rotation of the ring gear 21, and the retainer 30 is driven to rotate. Thus, even when the motor 10 fails, the opening and closing of the door can be achieved by controlling the rotation of the ring gear 21. Alternatively, the structure and method of fixing and rotating the ring gear 21 will be described in detail later in this application.

In summary, the driving mechanism 1 provided by the application realizes the door opening and closing by adopting the motor 10 to control the sun gear 23 to rotate or directly controlling the gear ring 21 to rotate, so that the method for controlling the door lock is increased, the problem that the door cannot be opened and closed due to the damage of the motor 10 in a single motor 10 lock is avoided, and the difficulty and risk of opening the door are reduced.

Alternatively, referring again to fig. 1, the transmission mechanism 40 includes a first gear 41, a second gear 42, and a third gear 43, the first gear 41 being rotatably connected to the motor 10, the second gear 42 being rotatably connected to the first gear 41, the third gear 43 being rotatably connected to the second gear 42. The rotation of the motor 10 can be transmitted to the sun gear 23 via a plurality of gears.

Referring to fig. 4 together, fig. 4 is a schematic structural diagram of a driving mechanism according to another embodiment of the present application. In this embodiment, the driving mechanism 1 further includes a protective housing 44, where the protective housing 44 houses a gear assembly, and this embodiment can better protect the transmission mechanism 40 through the protective housing 44.

Referring to fig. 3 and fig. 5 again, fig. 5 is a partially exploded schematic view of a driving mechanism according to an embodiment of the present application. In this embodiment, the sun gear 23 includes a first sub-sun gear 231 and a second sub-sun gear 232 coaxially disposed, and the motor 10 is rotatably connected to the first sub-sun gear 231; the second sub-sun gear 232 is disposed in the accommodating space 211, and the second sub-sun gear 232 is rotatably connected to the planet gear 22.

The foregoing describes that a part of the sun gear 23 is disposed in the accommodating space 211, and in particular, in this embodiment, the sun gear 23 may include a first sub-sun gear 231 and a second sub-sun gear 232 that are coaxially disposed. The first sun gear 231 is disposed outside the accommodating space 211 and is rotatably connected to the electrode. The second sub-sun gear 232 is disposed in the accommodating space 211, and the second sub-sun gear 232 is rotatably connected to the planet gear 22. This allows the sun gear 23 to be rotatably connected to the motor 10 outside the housing space 211 and to the planetary gear 22 in the housing space 211.

Referring to fig. 6 together, fig. 6 is a schematic structural diagram of a driving mechanism according to another embodiment of the present application. In this embodiment, the driving mechanism 1 further includes a gear bracket 50, the gear bracket 50 is rotatably connected to one side of the ring gear 21, and the gear bracket 50 has a fixed state or a rotating state.

The above description has been given of the ring gear 21 having a fixed state and a rotating state, and the present embodiment will describe how the sun gear 23 is fixed and rotated. Specifically, in the present embodiment, the gear carrier 50 is rotatably connected to one side of the ring gear 21 by adding the gear carrier 50, so that the gear carrier 50 and the ring gear 21 are interlocked. In addition, the gear bracket 50 has a fixed state or a rotating state. Thus, the present embodiment can control the movement of the ring gear 21 by the gear carrier 50. When the gear carrier 50 is in the fixed state, the ring gear 21 is also in the fixed state. When the gear carrier 50 is in a rotating state, the ring gear 21 is also in a rotating state.

Referring to fig. 7-10 together, fig. 7 is a schematic structural diagram of a driving mechanism with a housing removed according to another embodiment of the present disclosure. Fig. 8 is a schematic cross-sectional view of a driving mechanism along A-A in another embodiment of the present application. Fig. 9 is a schematic view of a gear rack in an embodiment of the present application with rotation. Fig. 10 is a top view of a drive mechanism according to an embodiment of the present application. In this embodiment, the driving mechanism 1 further includes a handle bracket 51 and a housing 60, wherein the handle bracket 51 is slidably connected to the gear bracket 50, and a sliding direction of the handle bracket 51 is perpendicular to a rotation direction of the ring gear 21. The housing 60 is provided with a containing space 61, the motor 10 and the planetary gear assembly 20 are disposed in the containing space 61, the housing 60 is provided with a through hole 62 communicating with the containing space 61, a part of the handle support 51 penetrates through the through hole 62, at least a part of the side wall of the through hole 62 is provided with a limit groove 63, and the limit groove 63 and the handle support 51 are mutually matched to limit the rotation of the handle support 51.

The present embodiment will describe in detail how the gear bracket 50 is made to have a fixed state or a rotating state. Specifically, the handle bracket 51 and the housing 60 may be added, and the handle bracket 51 is slidably connected to the gear bracket 50, and the sliding direction (the direction shown as D1 in fig. 7) of the handle bracket 51 is perpendicular to the rotation direction (the direction shown as D2 in fig. 7) of the ring gear 21. It is also understood that the handle bracket 51 is not only connected to the gear bracket 50 but also slides relative to the gear bracket 50.

In addition, the housing 60 is a shell of the driving mechanism 1, and a part of structural components can be disposed in the accommodating space 61 in the housing 60, so as to provide a mounting foundation and a protection foundation for the structural components of the driving mechanism 1. The housing 60 is provided with a through hole 62, a part of the handle support 51 penetrates through the through hole 62, the rest of the handle support 51 is arranged outside the accommodating space 61 of the housing 60, and the handle support 51 arranged outside the accommodating space 61 is used for installing other structural members or is directly used for a user to operate. In this embodiment, a limiting groove 63 may be formed on at least a portion of the side wall of the through hole 62, and the limiting groove 63 and the handle support 51 cooperate to limit the rotation of the handle support 51.

As shown in fig. 8 and 10, the handle bracket 51 is provided with a limiting portion 52 protruding upward, and when the handle bracket 51 is located in the limiting groove 63, the limiting groove 63 can limit the rotation of the limiting portion 52, that is, the limiting groove 63 on the housing 60 limits the rotation of the handle bracket 51, that is, the housing 60 limits the rotation of the handle bracket 51, so that the gear bracket 50 has a fixed state. As shown in fig. 9, in the process of moving the handle support 51 towards the gear support 50, when the limiting portion 52 is separated from the limiting groove 63 or the limiting portion 52 is separated from the side wall of the through hole 62, the limiting groove 63 can not limit the limiting portion 52 of the handle support 51 any more, so that the handle support 51 can rotate, and the gear support 50 is driven to rotate, so that the gear support 50 has a rotating state.

Alternatively, when the ring gear 21 is to be newly fixed, the handle holder 51 may be moved in a direction away from the gear holder 50 again, and the stopper 52 may be provided in the stopper groove 63 again, thereby restricting the rotation of the handle holder 51, and thus restricting the rotation of the gear holder 50 and the ring gear 21 in turn.

Referring to fig. 11 together, fig. 11 is a schematic cross-sectional view of a driving mechanism along A-A direction according to another embodiment of the present application. In this embodiment, the driving mechanism 1 further includes a second elastic member 53, one end of the second elastic member 53 abuts against the handle bracket 51, the other end of the second elastic member 53 abuts against the gear bracket 50, and when the handle bracket 51 moves in a direction approaching the gear bracket 50, the second elastic member 53 is in a compressed state.

In the present embodiment, a second elastic member 53 may be added, and the handle holder 51 and the gear holder 50 may be connected by the second elastic member 53. The second elastic member 53 is in a compressed state when the handle holder 51 is moved in a direction approaching the gear holder 50. At this time, the second elastic member 53 has a resilient force, and when the external force on the handle support 51 is removed, the handle support 51 can automatically move along a direction away from the gear support 50 under the resilient force of the elastic member, and the limiting portion 52 is disposed in the limiting groove 63 again, so as to limit the rotation of the handle support 51, and further limit the rotation of the gear support 50 and the gear ring 21.

Optionally, a first accommodating groove 54 is formed on a side of the handle support 51, which is close to the gear support 50, and a part of the second elastic member 53 is disposed in the first accommodating groove 54. In this embodiment, the handle bracket 51 may be provided with a first receiving groove 54 on a side close to the gear bracket 50, and a part of the second elastic member 53 may be disposed in the first receiving groove 54, so that not only the limiting capability of the second elastic member 53 may be improved, but also the size of the driving mechanism 1 may be reduced, and the mechanism may be simplified.

Referring again to fig. 7, in the present embodiment, the motor 10 is disposed on a first side 24 of the planetary gear 22 assembly, the gear bracket 50 is disposed on a second side 25 of the planetary gear 22 assembly, and the first side 24 is disposed opposite to the second side 25.

As can be seen from the above, the driving mechanism 1 provided in this embodiment may include the motor 10, the planetary gear 22 assembly, and the bracket assembly. For the arrangement relation of the three. The motor 10 is disposed on a first side 24 of the planetary gear 22 assembly, the support assembly is disposed on a second side 25 of the planetary gear 22 assembly, and the first side 24 is disposed opposite to the second side 25. It will also be appreciated that the motor 10 and the bracket assembly are provided on opposite sides of the planetary gear 22 assembly, which increases the dimension of the drive mechanism 1 in the longitudinal direction and decreases the dimension in the thickness direction, thereby approximating the drive mechanism 1 to a long and narrow shape.

Referring to fig. 12-13 together, fig. 12 is a schematic cross-sectional view of a driving mechanism along A-A direction according to another embodiment of the present application. Fig. 13 is a top view of a drive mechanism according to another embodiment of the present application. In this embodiment, the driving mechanism 1 further includes a universal joint 70, and the universal joint 70 is rotatably connected to the other side of the holder 30; the cage 30 has a first rotational direction and the gimbal 70 has a second rotational direction, the first rotational direction intersecting the second rotational direction; the universal joint 70 is provided with a second accommodating groove 71, and the second accommodating groove 71 is used for connecting a lock cylinder.

As can be seen from the foregoing, another structural lock cylinder in the door lock is connected to the other side of the cage 30, with the lock cylinder and planetary gear 22 assemblies being disposed on opposite sides of the cage 30. The lock cylinder is preferably vertically connected with the retainer 30, so that the driving mechanism 1 and the lock cylinder are concentric in the butt joint and linkage processes, and the force on the retainer 30 is better transmitted to the lock cylinder, thereby reducing unlocking difficulty. Therefore, in the present embodiment, the universal joint 70 may be added to the driving mechanism 1, the universal joint 70 may be rotatably connected to the other side of the holder 30, the second receiving groove 71 may be formed in the universal joint 70, and the lock cylinder may be connected by the second receiving groove 71.

In addition, the cage 30 has a first rotational direction (as indicated by the direction D3 in fig. 13), and the universal joint 70 has a second rotational direction (as indicated by the direction D4 in fig. 12), the first rotational direction intersecting the second rotational direction. It is also understood that the first direction of rotation is not parallel to the second direction of rotation. Thus, when the lock cylinder is installed in the second accommodating groove 71, the rotation of the universal joint 70 can be utilized to offset the deflection angle of the lock cylinder and the retainer 30, so that the force on the retainer 30 is better transmitted to the lock cylinder, and the problem of non-concentricity of the driving mechanism 1 and the lock cylinder in the process of abutting and linkage is corrected and solved.

Referring to fig. 14-15 together, fig. 14 is a schematic view of the universal joint according to an embodiment of the present application when the universal joint rotates along the first sub-rotation direction. Fig. 15 is a schematic view of the gimbal in one embodiment of the present application when rotating in a second sub-rotation direction. In the present embodiment, a protruding portion 72 is protruding from the other side surface of the holder 30, a first rotation space 73 is formed around the protruding portion 72, the universal joint 70 includes a first rotation portion 74 and a second rotation portion 75, the first rotation portion 74 is provided in the first rotation space 73, and the first rotation portion 74 is rotatably connected to the protruding portion 72. The first rotating portion 74 has a second rotating space 76 therein, the second rotating portion 75 is disposed in the second rotating space 76, the second rotating portion 75 is rotatably connected to the first rotating portion 74, and the second rotating portion 75 has the second receiving groove 71 therein. The first rotating portion 74 has a first sub-rotating direction, the second rotating portion 75 has a second sub-rotating direction, the first sub-rotating direction intersects the second sub-rotating direction, and both the first sub-rotating direction and the second sub-rotating direction intersect the second rotating direction.

In the present embodiment, the protruding portion 72 may be provided protruding from the holder 30, the first rotating portion 74 and the second rotating portion 75 of the universal joint 70 may be provided in the first rotating space 73 in the protruding portion 72, the protruding portion 72 may be connected to the first rotating portion 74 by rotating, and the first rotating portion 74 and the protruding portion 72 may be connected to each other by being excessively fitted in parallel with the rotation shaft 78. This allows the first rotating portion 74 to have a first sub-rotation direction (as indicated by direction D5 in fig. 14). The second rotating part 75 may be disposed in a second rotating space 76 in the first rotating part 74, and the second rotating part 75 may be rotationally connected to the first rotating part 74, so that the second rotating part 75 and the first rotating part 74 are vertically and transitionally connected through a rotating shaft 78. The second rotating portion 75 thus has a second sub-rotation direction (as indicated by direction D6 in fig. 15). A second receiving groove 71 for connecting the key cylinder is provided in the second rotating portion 75.

The second rotation direction mentioned in the above embodiment may be formed by combining the first sub rotation direction and the second sub rotation direction. In this embodiment, the first sub-rotation direction may intersect the second sub-rotation direction, and the first sub-rotation direction and the second sub-rotation direction may intersect the second rotation direction. This allows the universal joint 70 to have more rotational directions, thereby further correcting and solving the problem of misalignment of the drive mechanism 1 and the lock cylinder during the mating and interlocking process.

Optionally, referring to fig. 13 again, in this embodiment, the protruding portion 72 is provided with a via hole 77, the universal joint 70 further includes a rotation shaft 78 and a protection portion 79, the rotation shaft 78 penetrates the via hole 77 and is connected to the first rotation portion 74, and the protection portion 79 is sleeved on the protruding portion 72 so that the rotation shaft 78 abuts against the protection portion 79

The first rotating portion 74 is rotatably connected to the protruding portion 72, where the protruding portion 72 is provided with a through hole 77, and the rotating shaft 78 penetrates through the through hole 77 and is connected to the first rotating portion 74, so that the first rotating portion 74 is rotatably connected to the protruding portion 72. In the present embodiment, a protection portion 79 is provided outside the protruding portion 72, and the protection portion 79 is fitted around the protruding portion 72 so that the rotation shaft 78 abuts against the protection portion 79, thereby preventing the rotation shaft 78 from falling from the via hole 77.

The embodiment of the application also provides a door lock, which comprises a lock cylinder and the driving mechanism 1 provided by the embodiment of the application, wherein the lock cylinder is connected to the other side of the retainer 30, and the lock cylinder moves under the rotation of the retainer 30, so that the door is opened and closed.

The door lock provided by the embodiment of the application can realize the door opening and closing by adopting the motor 10 to control the gear ring 21 to rotate or controlling the sun gear 23 to rotate in two modes by adopting the driving mechanism 1 provided by the embodiment of the application, so that the method for controlling the door lock is increased, the problem that the door cannot be opened and closed due to the damage of the motor 10 in a single motor 10 lock is avoided, and the difficulty and risk of opening the door are reduced.

The foregoing has outlined rather broadly the more detailed description of the embodiments of the present application in order that the principles and embodiments of the present application may be explained and illustrated herein, the above description being provided for the purpose of facilitating the understanding of the method and core concepts of the present application; meanwhile, as those skilled in the art will have modifications in the specific embodiments and application scope in accordance with the ideas of the present application, the present description should not be construed as limiting the present application in view of the above.

Claims

1. A drive mechanism for a door lock, the drive mechanism comprising:

a motor;

the planetary gear assembly comprises a gear ring, a planet wheel and a sun wheel, the motor is rotationally connected with the sun wheel, the gear ring is provided with an accommodating space, the planet wheel and part of the sun wheel are arranged in the accommodating space, the planet wheel is rotationally connected between the sun wheel and the gear ring, the sun wheel comprises a first sub-sun wheel and a second sub-sun wheel which are coaxially arranged, and the motor is rotationally connected with the first sub-sun wheel; the second sub-sun gear is arranged in the accommodating space and is rotationally connected with the planet gears; and

the retainer is arranged on one side of the planetary gear assembly, the gear ring and the sun gear are both abutted against the retainer, and the planetary gears are connected with the retainer; when the gear ring is in a fixed state, the sun gear rotates under the drive of the motor so as to enable the planet gears to rotate relative to the gear ring; or when the sun gear is in a fixed state, the gear ring can be controlled to rotate so as to enable the planet gears to rotate relative to the sun gear;

the gear bracket is rotationally connected to one side of the gear ring and is in a fixed state or a rotating state;

a universal joint rotatably connected to the other side of the holder; the cage has a first rotational direction, the gimbal has a second rotational direction, and the first rotational direction intersects the second rotational direction; the universal joint is provided with a second accommodating groove which is used for connecting the lock cylinder;

2. The drive mechanism of claim 1, further comprising a handle bracket and a housing, the handle bracket being slidably coupled to the gear bracket, and a sliding direction of the handle bracket being perpendicular to a rotational direction of the ring gear;

3. The drive mechanism of claim 2, further comprising a second elastic member, one end of the second elastic member abutting the handle bracket, the other end of the second elastic member abutting the gear bracket, the second elastic member being in a compressed state when the handle bracket moves in a direction approaching the gear bracket.

4. A drive mechanism according to claim 3, wherein a first receiving recess is provided in a side of the handle support adjacent the gear support, and a portion of the second resilient member is provided in the first receiving recess.

5. The drive mechanism of any one of claims 1-4, wherein the motor is disposed on a first side of the planetary assembly and the gear support is disposed on a second side of the planetary assembly, the first side being disposed opposite the second side.

6. A door lock comprising a lock cylinder, which is connected to the other side of the holder, and a driving mechanism according to any one of claims 1 to 5, which moves under rotation of the holder, thereby opening and closing a door.