Clutch and smart lock

Abstract

The application discloses a kind of clutch, including shell;Top pressure mechanism, including sliding part and the top pressure part being connected with sliding part, sliding part is installed in the shell in the way of being slidable along axial direction, and top pressure part is located outside shell;Electric push mechanism, including: rotating shaft, at least part is installed in the shell, driving spring is sleeved on rotating shaft, and the outer circumferential surface of rotating shaft is equipped with multiple card pins in different helical regions of driving spring, and helical region is surrounded by adjacent helical line of driving spring along the axial direction of rotating shaft;Wherein, rotating shaft can rotate along circumference to make at least two card pins drive the driving spring moves along axial direction relative to rotating shaft, and driving spring can drive sliding part slides along axial direction relative to shell.The card pin of the application and driving spring are multi-point contact motion, can reduce the friction of card pin and driving spring, reduce the wear of driving spring.The application further provides an intelligent lock.

Description

Technical Field

[0001] This invention relates to the field of door lock technology, and in particular to a clutch and a smart lock. Background Technology

[0002] Currently, smart locks are widely popular and increasingly used due to their convenience of not requiring keys. Typically, to prevent direct unlocking via the external handle, a clutch is installed between the external handle and the unlocking shaft. When the clutch disengages, the external handle rotates freely, thus providing anti-theft functionality. When the correct key or electronic identification (password or fingerprint, etc.) is inserted, the clutch connects the external handle and the unlocking shaft, enabling external unlocking. However, commonly used clutches have short lifespans and poor stability. Summary of the Invention

[0003] The purpose of this invention is to solve the technical problem of short clutch life. This invention provides a clutch that reduces frequent internal friction, decreases clutch wear, extends clutch life, and offers good stability.

[0004] To address the aforementioned technical problems, embodiments of the present invention disclose a clutch for a smart lock, comprising: a housing; an electric actuation mechanism, comprising: a rotating shaft, at least partially installed within the housing, a drive spring sleeved on the rotating shaft, and a plurality of locking pins located within different helical regions of the drive spring on the outer circumferential surface of the rotating shaft, the helical regions being enclosed by adjacent helical lines of the drive spring along the axial direction of the rotating shaft; and a pressing mechanism, comprising a sliding portion and a pressing portion connected to the sliding portion, the sliding portion being slidably installed within the housing along the axial direction, and the pressing portion being located outside the housing; wherein, the rotating shaft is circumferentially rotatable to cause at least two of the locking pins to drive the drive spring to move relative to the rotating shaft along the axial direction, and the drive spring is capable of driving the sliding portion to slide relative to the housing along the axial direction.

[0005] By adopting the above technical solution, the locking pin and the drive spring have multi-point contact movement, which can reduce the friction between the locking pin and the drive spring, reduce the wear on the drive spring, and the multi-point contact can stably make the drive spring slide on the rotating shaft, resulting in good stability.

[0006] According to another specific embodiment of the present invention, when the rotating shaft rotates along the circumferential direction, a plurality of the locking pins can simultaneously abut against the drive spring along the axial direction, so that the pressing part moves in the axial direction away from the housing; or, a plurality of the locking pins can simultaneously separate from the drive spring along the axial direction, so that the pressing part moves in the axial direction toward the housing.

[0007] According to another specific embodiment of the invention, each of the locking pins extends radially along the pivot.

[0008] According to another specific embodiment of the invention, a plurality of said pins can be cut by the same plane extending along said axial direction.

[0009] According to another specific embodiment of the present invention, the central axis of the rotating shaft is located in the plane.

[0010] According to another specific embodiment of the present invention, the sliding part includes a first mounting hole and a second mounting hole spaced apart along the axial direction, the rotating shaft passes through the sliding part and is rotatably connected to the first mounting hole and the second mounting hole respectively, and the driving spring is located between the first mounting hole and the second mounting hole.

[0011] According to another specific embodiment of the present invention, the housing has a first mounting portion and a second mounting portion spaced apart along the axial direction, the first mounting hole and the second mounting hole are located between the first mounting portion and the second mounting portion, and the two axial ends of the rotating shaft are respectively rotatably connected to the first mounting portion and the second mounting portion.

[0012] According to another specific embodiment of the present invention, the housing is provided with a sliding groove, and the first mounting part and the second mounting part are respectively provided at the two ends of the sliding groove along the axial direction. The sliding part is radially limited and installed in the sliding groove, and can slide in the sliding groove along the axial direction.

[0013] According to another specific embodiment of the present invention, the pressing mechanism further includes a first connector and a second connector arranged radially spaced along the rotating shaft. The first connector and the second connector extend along the axial direction and protrude from the sliding groove outside the housing, and their axial ends are respectively connected to the sliding part and the pressing part. Along the radial direction, the rotating shaft is located between the first connector and the second connector.

[0014] According to another specific embodiment of the present invention, the electric drive mechanism further includes a motor, a main gear, and a driven gear disposed within the housing. The main gear is sleeved on the output shaft of the motor, and the driven gear is sleeved on the rotating shaft and meshes with the main gear.

[0015] According to another specific embodiment of the present invention, a manual pushing mechanism is further included, the manual pushing mechanism comprising:

[0016] A rotating component is rotatably mounted on the housing and has a rotating operating end along the axial direction, wherein the rotating operating end and the pressing portion are located on opposite sides of the housing;

[0017] A push shaft is slidably mounted within the housing along the axial direction. One end of the push shaft is connected to the rotating component along the axial direction, and the other end is connected to the sliding part via a third connector.

[0018] By operating the rotating component to rotate circumferentially via the rotating operating end, the pushing shaft can be moved relative to the rotating component along the axial direction, and the pushing shaft can drive the sliding part to slide relative to the housing along the axial direction.

[0019] According to another specific embodiment of the present invention, along the axial direction, the end of the push shaft facing the rotating member is provided with an inclined surface, and the end of the rotating member facing the push shaft is provided with a protrusion that cooperates with the inclined surface. When the rotating member rotates, the protrusion can slide along the inclined surface so that the push shaft moves along the axial direction.

[0020] According to another specific embodiment of the present invention, the third connector includes a first portion extending radially along the rotating shaft and a second portion extending axially. One end of the first portion is connected to the sliding portion and the other end is connected to the second portion. One of the second portion and the other end of the push shaft are provided with a protrusion and the other is provided with a recess, and the protrusion is located in the recess.

[0021] According to another specific embodiment of the present invention, the other end of the push shaft elastically abuts against the third connector.

[0022] According to another specific embodiment of the present invention, it further includes an axial limiting portion for limiting the third connector to the end position of the axial movement in the direction toward the rotating member.

[0023] According to another specific embodiment of the present invention, the housing is further provided with a rotating groove, the rotating component is axially limited and installed in the rotating groove, a limiting block is provided on the outer peripheral surface of the rotating component, a limiting groove extending along the circumferential direction is provided in the rotating groove, the limiting block is located in the limiting groove, and the limiting block is used to limit the angle of circumferential rotation of the rotating component in the rotating groove.

[0024] According to another specific embodiment of the present invention, the top pressing portion is arc-shaped.

[0025] The present invention also provides a smart lock, comprising: a door handle rotating assembly; a clutch pin; a clutch as described in any of the preceding claims, wherein, along the axial direction, the pressing portion abuts against the clutch pin; wherein, the pressing portion is movable along the axial direction away from the housing to drive the clutch pin to engage with the door handle rotating assembly, and rotating the door handle rotating assembly can open the door; the pressing portion is also movable along the axial direction toward the housing to drive the clutch pin to disengage from the door handle rotating assembly, and rotating the door handle rotating assembly cannot open the door. Attached Figure Description

[0026] Figure 1 A perspective view of a smart lock according to an embodiment of the present invention is shown;

[0027] Figure 2 A three-dimensional representation of the clutch according to an embodiment of the present invention is shown. Figure 1 ;

[0028] Figure 3 An exploded perspective view of the clutch according to an embodiment of the present invention is shown;

[0029] Figure 4 A three-dimensional representation of the clutch according to an embodiment of the present invention is shown. Figure 2 ;

[0030] Figure 5 A perspective view of the rotating shaft in the clutch according to an embodiment of the present invention is shown. Detailed Implementation

[0031] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention is presented in conjunction with preferred embodiments, this does not mean that the features of the invention are limited to these embodiments. On the contrary, the purpose of describing the invention in conjunction with embodiments is to cover other options or modifications that may be derived based on the claims of the present invention. To provide a deep understanding of the invention, many specific details will be included in the following description. The invention may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of the invention, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0032] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] In the description of this embodiment, it should be noted that the terms "upper," "lower," "inner," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. 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 orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0034] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0035] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0036] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0037] refer to Figures 1 to 5 The present invention provides a clutch 2 for a smart lock 1. The clutch 2 includes: a housing 20, in this embodiment, the housing 20 includes an upper cover 22 and a lower cover 21; a pressing mechanism 30, including a sliding part 31 and a pressing part 32 connected to the sliding part 31, the sliding part 31 being inclined along the axial direction ( Figure 4 The clutch pin 4 (shown in the X direction) is slidably installed inside the housing 20, and the pressing part 32 is located outside the housing 20, used to press against the clutch pin 4. In this embodiment, the pressing part 32 is arc-shaped, which can increase the contact range with the clutch pin 4. However, the shape of the pressing part 32 is not limited to this, and it can achieve pressing against the clutch pin 4.

[0038] In this embodiment, the clutch 2 includes an electrically driven mechanism, namely, an electrically driven pressing part 32 pressing the clutch pin 4, as shown in the reference. Figures 3 to 5 The electric actuation mechanism includes a rotating shaft 40, which is at least partially installed within the housing 20. In this embodiment, the rotating shaft 40 does not extend out of the housing 20; the rotating shaft 40 is completely located within the housing 20. Figure 5 As shown, a drive spring 41 is sleeved on the rotating shaft 40, and the outer circumferential surface of the rotating shaft 40 is provided with multiple spiral regions located in different spiral areas of the drive spring 41. Figure 5 The locking pin 42 (shown in C) is located within the spiral region, which is formed by the drive spring 41 along the axial adjacent spiral lines of the rotating shaft 40. Figure 3 and Figure 5The diagram shows two card pins 42, but the number of card pins 42 is not limited to this; there can be more than two, depending on the actual application scenario.

[0039] refer to Figure 3 and Figure 4 The electric drive mechanism further includes a motor 50, a main gear 51, and a driven gear 52 disposed within the housing 20. The main gear 51 is sleeved on the output shaft of the motor 50, and the driven gear 52 is sleeved on the rotating shaft 40 and meshes with the main gear 51. When the motor 50 operates, its output shaft transmits power to the rotating shaft 40 through the main gear 51 and the driven gear 52, driving the rotating shaft 40 to rotate clockwise or counterclockwise in the circumferential direction. However, the drive structure is not limited to this; any structure capable of driving the rotating shaft 40 to rotate clockwise or counterclockwise in the circumferential direction is acceptable. In this embodiment, the output shaft of the motor 50 is parallel to the rotating shaft 40, and the driven gear 52 is connected to the end of the rotating shaft 40 away from the top pressure part 32.

[0040] In addition, the positions of the multiple locking pins 42 are set according to the pitch of the drive spring 41, satisfying the following conditions: after the rotating shaft 40 rotates, the multiple locking pins 42 can rotate to abut against the drive spring 41, so that the drive spring 41 is compressed, thereby driving the pressing part 32 to perform the pressing action; after the rotating shaft 40 rotates in the opposite direction, the multiple locking pins 42 can rotate to separate from the drive spring 41, so that the drive spring 41 is reset, thereby separating the pressing part 32 from the clutch pin 4.

[0041] In this embodiment, the rotating shaft 40 is circumferentially rotatable so that at least two of the locking pins 42 drive the drive spring 41 to move relative to the rotating shaft 40 along the axial direction. The drive spring 41 drives the sliding part 31 to slide relative to the housing 20 along the axial direction. That is, when the rotating shaft 40 rotates, at least two locking pins 42 can abut against the drive spring 41, or all of the locking pins 42 can abut against the drive spring 41. As the rotating shaft 40 continues to rotate, the locking pins 42 slide along the spring coil of the drive spring 41 to compress the drive spring 41, thereby the drive spring 41 can drive the sliding part 31 to move axially, and then the pressing part 32 connected to the sliding part 31 moves axially to press against the clutch pin 4 or separates from the clutch pin 4.

[0042] In addition, when the rotating shaft 40 rotates to the end of the locking pin 42 and the drive spring 41, the drive spring 41 can slide out, allowing the motor 50, which drives the rotating shaft 40 to rotate, to run idle, avoiding excessive load when the motor 50 suddenly stops, thus ensuring the service life of the motor 50. Control and unlocking are both convenient and reliable.

[0043] Since at least two locking pins 42 abut against the drive spring 41, the movement between the locking pins 42 and the drive spring 41 is equivalent to multi-point contact, which reduces friction between the locking pins 42 and the drive spring 41, thus reducing wear on the drive spring 41. Furthermore, the multi-point contact ensures stable sliding of the drive spring 41 on the rotating shaft 40, resulting in good stability. In other words, the clutch 2 of this application exhibits reduced internal friction, decreased wear on the clutch 2, extended service life of the clutch 2, and good stability.

[0044] In some embodiments, when the rotating shaft 40 rotates along the circumferential direction, a plurality of the locking pins 42 can simultaneously abut against the drive spring 41 along the axial direction, so that the pressing portion 32 in the axial direction away from the housing 20 ( Figure 4 (As shown in direction A) moves to press against the clutch pin 4; or, multiple said locking pins 42 can simultaneously separate from the drive spring 41 along the axial direction, so that the pressing part 32 moves along the axial direction toward the housing 20 (as shown in direction A). Figure 4 (As shown in direction B) the top pressure part 32 separates from the clutch pin 4. That is, in this embodiment, when the rotating shaft 40 rotates, all the locking pins 42 can simultaneously abut against the drive spring 41, achieving multi-point contact, further reducing the wear between the locking pins 42 and the drive spring 41, and further improving the stability of the clutch 2.

[0045] In some implementations, reference Figure 3 and Figure 5 Each of the said locking pins 42 is radially ( ) along the rotating shaft 40 Figure 5 (As shown in the Y direction). The radial direction of the rotating shaft 40 is perpendicular to its axial direction. That is, each of the aforementioned locking pins 42 is perpendicular to the rotating shaft 40. However, the extending direction of the locking pins 42 is not limited to this; it is sufficient that after the rotating shaft 40 rotates, the locking pins 42 can rotate to abut against the drive spring 41, allowing the drive spring 41 to slide on the rotating shaft 40.

[0046] In some embodiments, multiple locking pins 42 can be intercepted by the same plane extending along the axial direction, which facilitates the rotation of the locking pins 42 to abut against the drive spring 41. Preferably, all locking pins 42 are located on the same side of the shaft 40 and are arranged in a row along the axial direction. More preferably, all locking pins 42 are located on opposite radial sides of the shaft 40 and are radially staggered. More preferably, some locking pins 42 are located on the same side of the shaft 40 and are arranged in a row along the axial direction, while some locking pins 42 are located on opposite radial sides of the shaft 40 and are radially staggered.

[0047] In some embodiments, the central axis of the rotating shaft 40 is located in the plane.

[0048] Continue to refer to Figure 3The sliding part 31 includes a portion along the axial direction ( Figure 3 The first mounting hole 35 and the second mounting hole 36 are spaced apart (as shown in the X direction). The rotating shaft 40 passes through the sliding part 31 and is rotatably connected to the first mounting hole 35 and the second mounting hole 36 respectively. The first mounting hole 35 is farther away from the top pressing part 32 than the second mounting hole 36. The driving spring 41 is located between the first mounting hole 35 and the second mounting hole 36.

[0049] When the motor 50 drives the shaft 40 to rotate in the forward circumferential direction, the locking pin 42 slides along the spring ring of the drive spring 41 to compress the drive spring 41. The compressed drive spring 41 elastically presses against the second mounting hole 36, pushing the sliding part 31 to move axially. Then, the pressing part 32 connected to the sliding part 31 moves axially to press against the clutch pin 4. Alternatively, when the motor 50 drives the shaft 40 to rotate in the reverse circumferential direction, the compressed drive spring 41 elastically presses against the first mounting hole 35, pushing the sliding part 31 to move axially. Then, the pressing part 32 connected to the sliding part 31 moves axially to separate from the clutch pin 4.

[0050] refer to Figure 3 The housing 20 has a first mounting portion 24 and a second mounting portion 23 spaced apart along the axial direction. The first mounting hole 35 and the second mounting hole 36 are located between the first mounting portion 24 and the second mounting portion 23. The first mounting portion 24 is farther from the pressing portion 32 than the second mounting portion 23. The two axial ends of the rotating shaft 40 are rotatably connected to the first mounting portion 24 and the second mounting portion 23, respectively. Thus, the rotating shaft 40 of this application is rotatably connected to the first mounting portion 24, the first mounting hole 35, the second mounting hole 36, and the second mounting portion 23 in sequence along the axial direction, improving the circumferential rotational stability of the rotating shaft 40, preventing eccentric movement of the rotating shaft 40, avoiding eccentric movement of the sliding portion 31, and ensuring stable axial movement of the pressing portion 32.

[0051] refer to Figure 3 The housing 20 has a sliding groove 25, and the first mounting portion 24 and the second mounting portion 23 are respectively provided at both axial ends of the sliding groove 25. The sliding portion 31 is radially limited and installed in the sliding groove 25, and can slide along the axial direction within the sliding groove 25. That is, the sliding portion 31 can slide along the axial direction ( Figure 3 (As shown in the X direction) slides within the sliding groove 25, in the radial direction ( Figure 3 The movement of the sliding part 31 (as shown in the Y direction) is restricted, further preventing eccentric movement of the sliding part 31, and ensuring stable movement along the axial direction within the sliding groove 25.

[0052] refer to Figure 3 and Figure 4 In some embodiments, the pressing mechanism 30 further includes radial ( ) along the rotating shaft 40 Figure 3 and Figure 4 A first connecting member 33 and a second connecting member 34 are spaced apart in the Y direction. The first connecting member 33 and the second connecting member 34 extend along the axial direction and protrude from the sliding groove 25 outside the housing 20. Their axial ends are respectively connected to the sliding part 31 and the pressing part 32. The rotating shaft 40 is located between the first connecting member 33 and the second connecting member 34 in the radial direction. In this embodiment, the second mounting part 23 has a first slot and a second slot at its radial ends. The first connecting member 33 is located in the first slot and can move axially relative to the first slot; the second connecting member 34 is located in the second slot and can move axially relative to the second slot. The first slot and the second slot further serve as guides to prevent the sliding part 31 from moving eccentrically and to move stably along the axial direction in the sliding groove 25, so that the pressing part 32 can stably press the clutch pin 4 along the axial direction.

[0053] As described in the foregoing embodiments, the pressure unit 32 presses against or disengages from the clutch pin 4 via an electrically driven mechanism. This is to further improve the stability of the clutch 2 and prevent the clutch 2 from becoming unusable due to power failure. (See reference...) Figure 3 and Figure 4 The clutch 2 of this application also includes a manual actuation mechanism. In the event of a power outage, the pressing part 32 can be manually operated to press against or disengage from the clutch pin 4. The manual actuation mechanism includes a rotating member 61, rotatably mounted on the housing 20, having a rotating operating end 64, along the axial direction (…). Figure 4 (As shown in the X direction), the rotating operating end 64 and the top pressing part 32 are located on opposite sides of the housing 20.

[0054] In this embodiment, the rotating operation end 64 has a rotating slot. The specific shape of the rotating slot is not limited. In this embodiment, the rotating slot is a straight slot. Other components are inserted into the rotating slot, and the rotating component 61 is rotated circumferentially by the rotating operation.

[0055] The manual pushing mechanism also includes a pushing shaft 62, which is slidably mounted within the housing 20 along the axial direction. One end of the pushing shaft 62 is connected to the rotating member 61 along the axial direction, and the other end 66 is connected to the sliding part 31 via a third connecting member 37. By operating the rotating member 61 circumferentially via the rotating operating end 64, the pushing shaft 62 can move relative to the rotating member 61 along the axial direction, driving the sliding part 31 to slide relative to the housing 20 along the axial direction. That is, by manually operating the rotating member 61 circumferentially, the pushing shaft 62 pushes the sliding part 31 to move axially, thereby causing the pressing part 32 connected to the sliding part 31 to move axially to press against the clutch pin 4 or to disengage from the clutch pin 4.

[0056] Specifically, refer to Figure 3 Along the axial direction, the end of the pushing shaft 62 facing the rotating member 61 has an inclined surface 63, and the end of the rotating member 61 facing the pushing shaft 62 has a protrusion 65 that cooperates with the inclined surface 63. When the rotating member 61 rotates, the protrusion 65 can slide along the inclined surface 63, so that the pushing shaft 62 moves along the axial direction. That is, the circumferential motion of the rotating member 61 is converted into the axial motion of the pushing shaft 62. In other embodiments, the rotating member 61 and the pushing shaft 62 can also have other matching forms, as long as they can realize the conversion of circumferential motion into axial motion.

[0057] Preferably, refer to Figure 3 and Figure 4 The third connector 37 includes a first portion 371 extending radially along the rotating shaft 40 and a second portion 372 extending axially. One end of the first portion 371 is connected to the sliding part 31, and the other end is connected to the second portion 372. One of the second portion 372 and the other end 66 of the push shaft 62 has a protrusion, and the other has a recess, with the protrusion located within the recess. In this embodiment, the second portion 372 has a recess, and the other end 66 of the push shaft 62 has a protrusion. This arrangement prevents the push shaft 62 and the third connector 37 from jamming.

[0058] Meanwhile, since the first part 371 extends radially, one end of the first part 371 is connected to the sliding part 31, and the second part 372 is connected to the push shaft 62, the push shaft 62, the third connecting member 37 and the sliding part 31 are linked together, which also guides the sliding part 31, prevents the sliding part 31 from moving eccentrically, and moves stably along the axial direction in the sliding groove 25.

[0059] Preferably, the other end 66 of the push shaft 62 elastically abuts against the third connecting member 37. This facilitates the reset of the push shaft 62 and prevents jamming between the push shaft 62 and the third connecting member 37.

[0060] In addition, refer to Figure 3 and Figure 4 The clutch 2 also includes an axial limiting portion 27 for limiting the third connecting member 37 in the axial direction toward the rotating member 61. Figure 4 (As shown in direction B) The endpoint of the movement. Avoid excessive axial movement of the third connector 37, which could damage the push shaft 62.

[0061] Continue to refer to Figure 3 The lower cover 21 of the housing 20 is further provided with a rotating groove 26, and the rotating component 61 is axially limited and installed in the rotating groove 26. That is, the rotating component 61 can rotate circumferentially in the rotating groove 26, but cannot move axially. A limiting block 67 is provided on the outer circumferential surface of the rotating component 61, and a limiting groove extending circumferentially is provided in the rotating groove 26. The limiting block 67 is located in the limiting groove and is used to limit the angle of circumferential rotation of the rotating component 61 in the rotating groove 26, preventing the rotating component 61 from rotating excessively in the circumferential direction and causing damage to the clutch 2.

[0062] refer to Figure 1 This application also provides a smart lock 1, including: a door handle rotating assembly 3 connected to a door handle 5; a clutch pin 4; and a clutch 2 in any of the above embodiments, along the axial direction ( Figure 1 (As shown in the X direction), the pressing part 32 abuts against the clutch pin 4. The pressing part 32 can move axially away from the housing 20 to engage the clutch pin 4 with the door handle rotating assembly 3, allowing the door to be opened by rotating the door handle rotating assembly 3; alternatively, the pressing part 32 can move axially towards the housing 20 to disengage the clutch pin 4 from the door handle rotating assembly 3, preventing the door from being opened by rotating the door handle rotating assembly 3.

[0063] While the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the invention to these descriptions. Various changes in form and detail can be made by those skilled in the art, including several simple deductions or substitutions, without departing from the spirit and scope of the invention.

Claims

1. A clutch for a smart lock, comprising: include: case; An electric drive mechanism includes: a rotating shaft, at least partially installed inside the housing, a drive spring sleeved on the rotating shaft, and a plurality of locking pins located in different helical regions of the drive spring on the outer circumferential surface of the rotating shaft, the helical regions being formed by adjacent helical lines of the drive spring along the axial direction of the rotating shaft; A pressing mechanism includes a sliding part and a pressing part connected to the sliding part. The sliding part is slidably mounted inside the housing along the axial direction, and the pressing part is located outside the housing. The rotating shaft is circumferentially rotatable so that at least two of the locking pins drive the drive spring to move relative to the rotating shaft along the axial direction, and the drive spring is capable of driving the sliding part to slide relative to the housing along the axial direction; When the shaft rotates, at least two of the locking pins can simultaneously abut against the drive spring; When the rotating shaft rotates to the position where the locking pin meets the end of the driving spring, the locking pin can slide out of the driving spring; Each of the said locking pins extends radially along the shaft, and multiple said locking pins can be intercepted by the same plane extending along the axial direction, the central axis of the shaft being located on the plane, the multiple said locking pins being located on opposite sides of the shaft in the radial direction and distributed in a staggered radial distribution, or, the multiple said locking pins being located on the same side of the shaft and distributed in a row along the axial direction, or, some of the multiple said locking pins being located on the same side of the shaft and distributed in a row along the axial direction, and some of the locking pins being located on opposite sides of the shaft in the radial direction and distributed in a staggered radial distribution.

2. The clutch of claim 1, wherein, When the shaft rotates circumferentially, multiple locking pins can simultaneously abut against the drive spring along the axial direction, so that the pressing part moves away from the housing along the axial direction; or, multiple locking pins can simultaneously separate from the drive spring along the axial direction, so that the pressing part moves towards the housing along the axial direction.

3. The clutch of claim 1, wherein The sliding part includes a first mounting hole and a second mounting hole spaced apart along the axial direction. The rotating shaft passes through the sliding part and is rotatably connected to the first mounting hole and the second mounting hole respectively. The driving spring is located between the first mounting hole and the second mounting hole.

4. The clutch of claim 3, wherein The housing has a first mounting portion and a second mounting portion spaced apart along the axial direction, the first mounting hole and the second mounting hole are located between the first mounting portion and the second mounting portion, and the two ends of the rotating shaft are rotatably connected to the first mounting portion and the second mounting portion, respectively.

5. The clutch of claim 4 wherein, The housing is provided with a sliding groove, and the first mounting part and the second mounting part are respectively provided at the two ends of the sliding groove along the axial direction. The sliding part is radially limited and installed in the sliding groove, and can slide in the sliding groove along the axial direction.

6. The clutch of claim 5 wherein, The pressing mechanism further includes a first connector and a second connector arranged radially at intervals along the rotating shaft. The first connector and the second connector extend along the axial direction and protrude from the sliding groove outside the housing, and their axial ends are respectively connected to the sliding part and the pressing part. Along the radial direction, the rotating shaft is located between the first connector and the second connector.

7. The clutch of claim 1, wherein The electric drive mechanism also includes a motor, a main gear, and a driven gear disposed within the housing. The main gear is sleeved on the output shaft of the motor, and the driven gear is sleeved on the rotating shaft and meshes with the main gear.

8. A clutch as claimed in any one of claims 1 to 7 wherein, It also includes a manually operated mechanism, which comprises: A rotating component is rotatably mounted on the housing and has a rotating operating end along the axial direction, wherein the rotating operating end and the pressing portion are located on opposite sides of the housing; A push shaft is slidably mounted within the housing along the axial direction. One end of the push shaft is connected to the rotating component along the axial direction, and the other end is connected to the sliding part via a third connector. By operating the rotating component to rotate circumferentially via the rotating operating end, the pushing shaft can be moved relative to the rotating component along the axial direction, and the pushing shaft can drive the sliding part to slide relative to the housing along the axial direction.

9. The clutch of claim 8, wherein Along the axial direction, the end of the push shaft facing the rotating member has an inclined surface, and the end of the rotating member facing the push shaft has a protrusion that cooperates with the inclined surface. When the rotating member rotates, the protrusion can slide along the inclined surface so that the push shaft can move along the axial direction.

10. The clutch of claim 8, wherein The third connector includes a first portion extending radially along the rotating shaft and a second portion extending axially. One end of the first portion is connected to the sliding part, and the other end is connected to the second portion. One of the second portion and the other end of the push shaft are provided with a protrusion and the other with a recess, and the protrusion is located in the recess.

11. The clutch of claim 8, wherein The other end of the drive shaft elastically abuts against the third connector.

12. The clutch of claim 8, wherein, It also includes an axial limiting part for limiting the third connector to the end position of the axial movement in the direction toward the rotating member.

13. The clutch of claim 8, wherein, The housing is further provided with a rotating groove, and the rotating component is axially limited and installed in the rotating groove. A limiting block is provided on the outer circumferential surface of the rotating component. A limiting groove extending along the circumferential direction is provided in the rotating groove. The limiting block is located in the limiting groove and is used to limit the angle of circumferential rotation of the rotating component in the rotating groove.

14. The clutch of claim 1, wherein, The top pressing part is arc-shaped.

15. A smart lock, comprising: include: Door handle rotation assembly; Clutch pin; The clutch according to any one of claims 1 to 14, along the axial direction, wherein the pressing portion abuts against the clutch pin; wherein, The top pressing part can move in the axial direction away from the housing to drive the clutch pin to engage with the door handle rotating assembly, and rotating the door handle rotating assembly can open the door; The top pressing part can move in the axial direction towards the shell to drive the clutch pin to separate from the door handle rotating assembly, and the rotation of the door handle rotating assembly cannot open the door.

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