CN112942991A - Clutch and intelligent lock - Google Patents

Abstract

The invention discloses a clutch, which comprises a shell; the jacking mechanism comprises a sliding part and a jacking part connected with the sliding part, the sliding part is arranged in the shell in an axially slidable manner, and the jacking part is positioned outside the shell; an electric pushing mechanism comprising: the rotating shaft is at least partially arranged in the shell, a driving spring is sleeved on the rotating shaft, a plurality of clamping pins positioned in different spiral areas of the driving spring are arranged on the peripheral surface of the rotating shaft, and the spiral areas are surrounded by spiral lines of the driving spring, which are adjacent to each other along the axial direction of the rotating shaft; the rotating shaft can rotate along the circumferential direction to enable the at least two clamping pins to drive the driving spring to move relative to the rotating shaft along the axial direction, and the driving spring can drive the sliding portion to slide relative to the shell along the axial direction. The bayonet lock and the driving spring move in a multi-point contact mode, so that friction between the bayonet lock and the driving spring can be reduced, and abrasion to the driving spring is reduced. The invention also provides an intelligent lock.

Description

Clutch and intelligent lock

Technical Field

The invention relates to the technical field of door locks, in particular to a clutch and an intelligent lock.

Background

At present, the intelligent lock is popular due to the convenience of not carrying a key, and the intelligent lock is more and more widely used. Usually, in order to avoid the direct unlocking of the outer handle, a clutch is arranged between the outer handle of the intelligent lock and the unlocking rotating shaft, and when the clutch is separated, the outer handle idles, so that the anti-theft function is realized; when a corresponding key is inserted or electronic identification (in a password or fingerprint mode or the like) is correct, the clutch is connected with the outer handle and the unlocking rotating shaft, so that external unlocking is realized. The conventional clutch has short service life and poor stability.

Disclosure of Invention

The invention aims to solve the technical problem of short service life of a clutch. The invention provides a clutch, which can reduce frequent friction in the clutch, reduce the wear to the clutch, prolong the service life of the clutch and has good stability.

In order to solve the above technical problem, an embodiment of the present invention discloses a clutch for an intelligent lock, including: a housing; an electric pushing mechanism comprising: the rotating shaft is at least partially arranged in the shell, a driving spring is sleeved on the rotating shaft, a plurality of clamping pins located in different spiral areas of the driving spring are arranged on the peripheral surface of the rotating shaft, and the spiral areas are surrounded by spiral lines of the driving spring adjacent to each other along the axial direction of the rotating shaft; the jacking mechanism comprises a sliding part and a jacking part connected with the sliding part, the sliding part is arranged in the shell in a sliding manner along the axial direction, and the jacking part is positioned outside the shell; the rotating shaft can rotate along the circumferential direction, so that at least two clamping pins drive the driving spring to move relative to the rotating shaft along the axial direction, and the driving spring can drive the sliding part to slide relative to the shell along the axial direction.

By adopting the technical scheme, the bayonet lock and the driving spring move in a multi-point contact manner, so that the friction between the bayonet lock and the driving spring can be reduced, the abrasion to the driving spring is reduced, the driving spring can stably slide on the rotating shaft by the multi-point contact, and the stability is good.

According to another specific embodiment of the present invention, when the rotating shaft rotates along the circumferential direction, the plurality of locking pins can simultaneously press against the driving spring along the axial direction, so that the pressing portion moves in a direction away from the housing along the axial direction; alternatively, a plurality of the lock pins may be simultaneously separated from the drive spring in the axial direction to move the pressing portion in the axial direction in a direction toward the housing.

According to another embodiment of the present invention, each of the locking pins extends in a radial direction of the rotation shaft.

According to another embodiment of the invention, a plurality of said detents can be intercepted by the same plane extending in said axial direction.

According to another embodiment of the invention, the central axis of the spindle is located in said plane.

According to another specific embodiment of the present invention, the sliding portion includes a first mounting hole and a second mounting hole spaced apart from each other in the axial direction, the rotating shaft passes through the sliding portion 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.

According to another specific embodiment of the present invention, the housing has a first mounting portion and a second mounting portion spaced apart from each other in 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 two axial ends of the rotating shaft are rotatably connected to the first mounting portion and the second mounting portion, respectively.

According to another specific embodiment of the present invention, a sliding groove is formed in the housing, the first mounting portion and the second mounting portion are respectively disposed at two axial ends of the sliding groove, and the sliding portion is radially and limitedly mounted in the sliding groove and can slide in the sliding groove along the axial direction.

According to another specific embodiment of the present invention, the pressing mechanism further includes a first connecting piece and a second connecting piece spaced apart from each other in a radial direction of the rotating shaft, the first connecting piece and the second connecting piece extend in the axial direction and extend out of the sliding groove to be located outside the housing, both axial ends of the first connecting piece and the second connecting piece are connected to the sliding portion and the pressing portion, respectively, and the rotating shaft is located between the first connecting piece and the second connecting piece in the radial direction.

According to another specific embodiment of the present invention, the electric pushing mechanism further includes a motor, a main gear, and a driven gear, the motor, the main gear, and the driven gear are disposed in the housing, the main gear is sleeved on an output shaft of the motor, and the driven gear is sleeved on the rotating shaft and engaged with the main gear.

According to another specific embodiment of the present invention, further comprising a manual pushing mechanism, the manual pushing mechanism comprising:

the rotating piece is rotatably arranged on the shell and provided with a rotating operation end, and the rotating operation end and the jacking part are positioned on two opposite sides of the shell along the axial direction;

a pushing shaft slidably mounted in the housing in the axial direction, one end of the pushing shaft being connected to the rotary member and the other end being connected to the sliding portion via a third connecting member; wherein the content of the first and second substances,

the rotating piece is operated by the rotating operation end to rotate along the circumferential direction, the pushing shaft can move relative to the rotating piece along the axial direction, and the pushing shaft can drive the sliding part to slide relative to the shell along the axial direction.

According to another embodiment of the present invention, an inclined surface is disposed at an end of the pushing shaft facing the rotating member along the axial direction, a protrusion engaged with the inclined surface is disposed at an end of the rotating member facing the pushing shaft, and the protrusion can slide along the inclined surface when the rotating member rotates, so that the pushing shaft moves along the axial direction.

According to another embodiment of the present invention, the third connecting member includes a first portion extending in a radial direction of the rotating shaft and a second portion extending in the axial direction, one end of the first portion is connected to the sliding portion, the other end of the first portion is connected to the second portion, one of the second portion and the other end of the pushing shaft is provided with a convex portion, and the other is provided with a concave portion, and the convex portion is located in the concave portion.

According to another embodiment of the present invention, the other end of the pushing shaft is elastically abutted against the third connecting member.

According to another specific embodiment of the present invention, the third connecting member further includes an axial limiting portion for limiting a terminal position of the third connecting member in the axial direction in a direction toward the rotating member.

According to another specific embodiment of the present invention, a rotation groove is further disposed in the housing, the rotation member is axially limited and mounted in the rotation groove, a limiting block is disposed on an outer circumferential surface of the rotation member, a limiting groove extending along the circumferential direction is disposed in the rotation groove, the limiting block is located in the limiting groove, and the limiting block is configured to limit an angle of the rotation member rotating in the circumferential direction in the rotation groove.

According to another embodiment of the present invention, the pressing portion has an arc shape.

The invention also provides an intelligent lock, comprising: a door handle turn assembly; a clutch pin; in the clutch according to any one of the above aspects, the pressing portion abuts against the clutch pin in the axial direction; wherein the hold-down portion is movable in the axial direction in a direction away from the housing to drive the clutch pin into engagement with the door handle turn assembly, rotation of the door handle turn assembly enabling opening of the door; the jacking portion can move in the axial direction along the direction towards the shell to drive the clutch pin to be separated from the door handle rotating assembly, and the door can not be opened by rotating the door handle rotating assembly.

Drawings

FIG. 1 illustrates a perspective view of a smart lock in accordance with an embodiment of the present invention;

FIG. 2 shows a first perspective view of a clutch in accordance with an embodiment of the present invention;

FIG. 3 shows an exploded perspective view of a clutch according to an embodiment of the invention;

FIG. 4 shows a second perspective view of a clutch in accordance with an embodiment of the present invention;

fig. 5 is a perspective view showing a rotating shaft in the clutch according to the embodiment of the present invention.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to these embodiments. On the contrary, the invention is described in connection with the embodiments for the purpose of covering alternatives or modifications that may be extended based on the claims of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be practiced without these particulars. Moreover, some of the specific details have been left out of the description in order to avoid obscuring or obscuring the focus of the present invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

It should be noted that in this specification, like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are usually placed in when used, and are only used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements indicated must have specific orientations, be constructed in specific orientations, and operated, and thus, should not be construed as limiting the present invention.

The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present embodiment, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. The specific meanings of the above terms in the present embodiment can be understood in specific cases by those of ordinary skill in the art.

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Referring to fig. 1 to 5, the present invention provides a clutch 2 for a smart lock 1, the clutch 2 including: a housing 20, in this embodiment, the housing 20 includes an upper cover 22 and a lower cover 21; the pressing mechanism 30 includes a sliding portion 31 and a pressing portion 32 connected to the sliding portion 31, the sliding portion 31 is slidably mounted in the housing 20 along the axial direction (shown in the X direction in fig. 4), and the pressing portion 32 is located outside the housing 20 and is used for pressing the clutch pin 4. In this embodiment, the pushing portion 32 is arc-shaped, so as to increase the contact range with the clutch pin 4. However, the shape of the pressing portion 32 is not limited to this, and pressing of the clutch pin 4 can be achieved.

In this embodiment, the clutch 2 includes an electric pushing mechanism, i.e., an electrically driven pushing portion 32 pushing against the clutch pin 4, and referring to fig. 3 to 5, the electric pushing mechanism includes: the rotating shaft 40 is at least partially installed in the housing 20, in this embodiment, the rotating shaft 40 does not extend out of the housing 20, and the rotating shaft 40 is completely located in the housing 20. As shown in fig. 5, a driving spring 41 is sleeved on the rotating shaft 40, a plurality of locking pins 42 located in different spiral regions (shown as C in fig. 5) of the driving spring 41 are arranged on the outer circumferential surface of the rotating shaft 40, and the spiral regions are surrounded by spiral lines of the driving spring 41 adjacent to each other in the axial direction of the rotating shaft 40. Two locking pins 42 are shown in fig. 3 and 5, but the number of the locking pins 42 is not limited to this, and may be more than two, and the arrangement is made according to the actual application scenario.

Referring to fig. 3 and 4, the electric pushing mechanism further includes a motor 50, a main gear 51, and a driven gear 52 disposed in the housing 20, the main gear 51 is sleeved on an output shaft of the motor 50, and the driven gear 52 is sleeved on the rotating shaft 40 and is engaged with the main gear 51. The motor 50 is operated, and an output shaft of the motor 50 transmits power to the rotating shaft 40 through the main gear 51 and the driven gear 52 to drive the rotating shaft 40 to rotate in the forward or reverse direction in the circumferential direction. However, the driving structure is not limited to this, and the rotating shaft 40 may be driven to rotate forward or backward in the circumferential direction. 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 one end of the rotating shaft 40 far away from the top pressing portion 32.

In addition, the setting positions of the plurality of detents 42 are set according to the pitch of the drive spring 41, and the following conditions are satisfied: after the rotating shaft 40 rotates, the plurality of bayonet pins 42 can rotate to abut against the driving spring 41, so that the driving spring 41 is compressed, and then the jacking portion 32 is driven to realize jacking action; after the rotating shaft 40 is rotated in the opposite direction, the plurality of lock pins 42 can be rotated to be separated from the driving spring 41 to restore the driving spring 41, and then the pressing portion 32 is separated from the clutch pin 4.

In this embodiment, the rotating shaft 40 can rotate in the circumferential direction, so that at least two of the locking pins 42 drive the driving spring 41 to move relative to the rotating shaft 40 in the axial direction, and the driving spring 41 can drive the sliding portion 31 to slide relative to the housing 20 in the axial direction. That is, when the rotating shaft 40 rotates, at least two locking pins 42 can abut against the driving spring 41, or all the locking pins 42 may abut against the driving spring 41; as the rotation shaft 40 continues to rotate, the click pin 42 slides along the coils of the drive spring 41 to compress the drive spring 41, so that the drive spring 41 can drive the slide portion 31 to move in the axial direction, and then the pressing portion 32 connected to the slide portion 31 moves in the axial direction to press the clutch pin 4 or to be separated from the clutch pin 4.

In addition, when the rotating shaft 40 rotates to the tail end of the bayonet pin 42 and the driving spring 41, the rotating shaft can slide out of the driving spring 41, so that a motor 50 which drives the rotating shaft 40 to rotate and is described later runs in an idle mode, the phenomenon that the motor 50 stops suddenly and the load is overlarge is avoided, the service life of the motor 50 is guaranteed, and the control and the unlocking are convenient and reliable.

Because at least two bayonet pins 42 are abutted against the driving spring 41, which is equivalent to that the bayonet pins 42 and the driving spring 41 move in a multi-point contact manner, the friction between the bayonet pins 42 and the driving spring 41 can be reduced, the abrasion to the driving spring 41 is reduced, and the driving spring 41 can stably slide on the rotating shaft 40 due to the multi-point contact, so that the stability is good. That is, the frequent friction in the clutch 2 of this application reduces, has reduced the wearing and tearing of clutch 2, has prolonged the life of clutch 2, and stability is good.

In some embodiments, when the rotating shaft 40 rotates along the circumferential direction, a plurality of the detents 42 can simultaneously abut against the driving spring 41 along the axial direction, so that the pressing portion 32 moves along the axial direction in a direction (direction a in fig. 4) away from the housing 20 to press the clutch pin 4; alternatively, a plurality of the lock pins 42 can be simultaneously separated from the drive spring 41 in the axial direction, so that the urging portion 32 is moved in the axial direction in a direction toward the housing 20 (direction B in fig. 4), and the urging portion 32 is separated 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 driving spring 41, so as to realize multi-point contact, further reduce the wear between the locking pins 42 and the driving spring 41, and further improve the stability of the clutch 2.

In some embodiments, referring to fig. 3 and 5, each of the detents 42 extends in a radial direction (shown in the Y direction in fig. 5) of the shaft 40. Wherein, the radial direction of the rotating shaft 40 is perpendicular to the axial direction of the rotating shaft 40. That is, each of the locking pins 42 is perpendicular to the rotation shaft 40. However, the extending direction of the lock pin 42 is not limited to this, and after the rotation shaft 40 is rotated, the lock pin 42 may be rotated to abut against the drive spring 41 so that the drive spring 41 slides on the rotation shaft 40.

In some embodiments, a plurality of said detents 42 can be intercepted by the same plane extending in said axial direction, which facilitates the rotation of the detents 42 against the drive spring 41. Preferably, all the detents 42 are located on the same side of the shaft 40 and are distributed in a row in the axial direction. Further preferably, all the locking pins 42 are located on the opposite sides of the rotation shaft 40 in the radial direction and are distributed in a staggered manner in the radial direction. It is further preferable that some of the locking pins 42 are located on the same side of the rotating shaft 40 and distributed in a row along the axial direction, and some of the locking pins 42 are located on two opposite sides of the rotating shaft 40 in the radial direction and are distributed in a staggered manner in the radial direction.

In some embodiments, the central axis of the shaft 40 lies in the plane.

With continued reference to fig. 3, the sliding portion 31 includes a first mounting hole 35 and a second mounting hole 36 spaced apart from each other along the axial direction (shown by the direction X in fig. 3), the rotating shaft 40 passes through the sliding portion 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 from the pressing portion 32 than the second mounting hole 36, and the driving spring 41 is located between the first mounting hole 35 and the second mounting hole 36.

When the motor 50 drives the rotating shaft 40 to rotate in the circumferential direction, the bayonet pin 42 slides along the coils of the driving spring 41 to compress the driving spring 41, the compressed driving spring 41 elastically presses the second mounting hole 36, the sliding part 31 is pushed to move in the axial direction, and then the pressing part 32 connected with the sliding part 31 moves in the axial direction to press the clutch pin 4; alternatively, when the motor 50 drives the rotating shaft 40 to rotate in the circumferential direction in the opposite direction, the compressed driving spring 41 elastically presses the first mounting hole 35, pushing the sliding portion 31 to move axially, and then the pressing portion 32 connected to the sliding portion 31 moves axially to be separated from the clutch pin 4.

Referring to fig. 3, the housing 20 has a first mounting portion 24 and a second mounting portion 23 disposed at an interval 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 far away from the top pressing portion 32 than the second mounting portion 23, and two axial ends of the rotating shaft 40 are rotatably connected to the first mounting portion 24 and the second mounting portion 23, respectively. Therefore, the rotating shaft 40 of the present application is sequentially rotatably connected with the first mounting portion 24, the first mounting hole 35, the second mounting hole 36 and the second mounting portion 23 along the axial direction, so that the circumferential rotation stability of the rotating shaft 40 is improved, the eccentric motion of the rotating shaft 40 is prevented, and the eccentric motion of the sliding portion 31 is avoided, so that the top pressing portion 32 stably moves in the axial direction.

Referring to fig. 3, a sliding groove 25 is arranged in the housing 20, the first mounting portion 24 and the second mounting portion 23 are respectively arranged at two axial ends of the sliding groove 25, and the sliding portion 31 is radially and limitedly mounted in the sliding groove 25 and can slide in the sliding groove 25 along the axial direction. That is, the sliding portion 31 is slidable in the sliding groove 25 in the axial direction (indicated by the X direction in fig. 3), and movement in the radial direction (indicated by the Y direction in fig. 3) is restricted, and the sliding portion 31 is prevented from moving eccentrically, and stably moves in the sliding groove 25 in the axial direction.

Referring to fig. 3 and 4, in some embodiments, the pressing mechanism 30 further includes a first connecting member 33 and a second connecting member 34 spaced apart from each other along a radial direction (shown in a Y direction in fig. 3 and 4) of the rotating shaft 40, the first connecting member 33 and the second connecting member 34 respectively extend along the axial direction and extend out of the sliding groove 25 to be located outside the housing 20, and both ends in the axial direction are respectively connected to the sliding portion 31 and the pressing portion 32, and the rotating shaft 40 is located between the first connecting member 33 and the second connecting member 34 along the radial direction. In this embodiment, the radial two ends of the second mounting portion 23 are provided with a first slot and a second slot, and the first connecting member 33 is disposed in the first slot and can move axially relative to the first slot; the second connector 34 is disposed in the second slot and is capable of moving axially relative to the second slot. After the first engaging groove and the second engaging groove are provided, a guiding function is further performed to prevent the sliding portion 31 from moving eccentrically and stably move in the sliding groove 25 along the axial direction, so that the pressing portion 32 can stably press the clutch pin 4 along the axial direction.

As in the previous embodiment, the pressing portion 32 is pressed against or separated from the clutch pin 4 by an electric pushing mechanism. In order to further improve the stability of the clutch 2, the clutch 2 is prevented from being incapable of being used due to power failure. Referring to fig. 3 and 4, the clutch 2 of the present application further includes a manual pushing mechanism, which is manually operated to press the pressing portion 32 against or away from the clutch pin 4 in case of power failure. The manual pushing mechanism comprises: the rotary member 61 is rotatably mounted to the housing 20, and has a rotation operation end 64, and the rotation operation end 64 and the pressing portion 32 are located on opposite sides of the housing 20 in the axial direction (shown by the X direction in fig. 4).

In this embodiment, the rotating operation end 64 has a rotating slot, and the specific shape of the rotating slot is not limited, and in this embodiment, the rotating slot is a linear slot, and other components are inserted into the rotating slot, and the rotating member 61 is rotated in the circumferential direction by the rotating operation.

The manual pushing mechanism further includes a pushing shaft 62, the pushing shaft 62 is slidably mounted in the housing 20 along the axial direction, and along the axial direction, one end of the pushing shaft 62 is connected to the rotating member 61, and the other end 66 is connected to the sliding portion 31 through a third connecting member 37. The pushing shaft 62 can be moved in the axial direction relative to the rotary member 61 by operating the rotary member 61 to rotate in the circumferential direction by the rotary operation end 64, and the pushing shaft 62 can drive the sliding portion 31 to slide in the axial direction relative to the housing 20. That is, by the manual operation of the rotating member 61 to rotate in the circumferential direction, the pushing shaft 62 pushes the sliding portion 31 to move in the axial direction, and then the pressing portion 32 connected to the sliding portion 31 moves in the axial direction to press the clutch pin 4 or to be separated from the clutch pin 4.

Specifically, referring to fig. 3, in the axial direction, an inclined surface 63 is disposed at an end of the pushing shaft 62 facing the rotating member 61, a protrusion 65 matched with the inclined surface 63 is disposed at an end of the rotating member 61 facing the pushing shaft 62, and when the rotating member 61 rotates, the protrusion 65 can slide along the inclined surface 63, so that the pushing shaft 62 moves in the axial direction. That is, the circumferential movement of the rotary member 61 is converted into the axial movement of the push shaft 62. In other embodiments, the rotating member 61 and the pushing shaft 62 may be in other matching forms, and the conversion of the circumferential motion into the axial motion may be achieved.

Preferably, referring to fig. 3 and 4, the third connecting member 37 includes a first portion 371 extending in a radial direction of the rotating shaft 40 and a second portion 372 extending in the axial direction, the first portion 371 is connected to the sliding portion 31 at one end and connected to the second portion 372 at the other end, one of the second portion 372 and the other end 66 of the pushing shaft 62 is provided with a convex portion, and the other is provided with a concave portion, and the convex portion is located in the concave portion. In this embodiment, the second portion 372 is provided with a recess and the other end 66 of the pushing shaft 62 is provided with a projection. Thus arranged, the push shaft 62 and the third connecting member 37 are not locked.

Meanwhile, as the first part 371 extends along the radial direction, one end of the first part 371 is connected with the sliding part 31, the second part 372 is connected with the pushing shaft 62, the third connecting piece 37 and the sliding part 31 realize linkage, and also play a role in guiding the sliding part 31, so that the sliding part 31 is prevented from eccentric movement and stably moves in the sliding groove 25 along the axial direction.

Preferably, the other end 66 of the pushing shaft 62 is elastically abutted against the third connecting member 37. On one hand, the pushing shaft 62 is favorable for resetting; on the other hand, jamming between the pushing shaft 62 and the third link 37 is prevented.

Further, referring to fig. 3 and 4, the clutch 2 further includes an axial direction restricting portion 27 for restricting a final position of the third link 37 in the axial direction in a direction (indicated by B direction in fig. 4) toward the rotary member 61. The third link 37 is prevented from being excessively moved in the axial direction, causing damage to the push shaft 62.

With continued reference to fig. 3, a rotation groove 26 is further formed in the lower cover 21 of the housing 20, and the rotating member 61 is axially and limitedly mounted in the rotation groove 26. That is, the rotor 61 can rotate in the inner circumferential direction of the rotation groove 26 and cannot move in the axial direction. Be equipped with stopper 67 on the outer peripheral face of rotating member 61, be equipped with in the swivelling chute 26 and follow the spacing groove that circumference extends, stopper 67 is located the spacing inslot, stopper 67 is used for the restriction rotating member 61 is in circumferential direction pivoted angle in the swivelling chute 26 prevents that rotating member 61 from causing the damage at circumferential direction excessive rotation to clutch 2.

Referring to fig. 1, the present application also provides an intelligent lock 1, comprising: a door handle rotating unit 3 connected to the door handle 5; a clutch pin 4; in the clutch 2 according to any of the embodiments described above, the urging portion 32 abuts against the clutch pin 4 in the axial direction (direction X in fig. 1). Wherein the jacking portion 32 is movable in the axial direction in a direction away from the housing 20 to drive the clutch pin 4 into engagement with the door handle turn assembly 3, and rotating the door handle turn assembly 3 opens the door; the urging portion 32 is movable in the axial direction in a direction toward the housing 20 to drive the clutch pin 4 to disengage from the door handle turn assembly 3, and rotating the door handle turn assembly 3 cannot open the door.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a more detailed description of the invention, taken in conjunction with the specific embodiments thereof, and that no limitation of the invention is intended thereby. Various changes in form and detail, including simple deductions or substitutions, may be made by those skilled in the art without departing from the spirit and scope of the invention.

Claims (18)

1. A clutch for a smart lock, comprising:

a housing;

an electric pushing mechanism comprising: the rotating shaft is at least partially arranged in the shell, a driving spring is sleeved on the rotating shaft, a plurality of clamping pins located in different spiral areas of the driving spring are arranged on the peripheral surface of the rotating shaft, and the spiral areas are surrounded by spiral lines of the driving spring adjacent to each other along the axial direction of the rotating shaft;

the jacking mechanism comprises a sliding part and a jacking part connected with the sliding part, the sliding part is arranged in the shell in a sliding manner along the axial direction, and the jacking part is positioned outside the shell; wherein the content of the first and second substances,

the rotating shaft can rotate along the circumferential direction, so that at least two clamping pins drive the driving spring to move relative to the rotating shaft along the axial direction, and the driving spring can drive the sliding part to slide relative to the shell along the axial direction.

2. The clutch of claim 1, wherein when the shaft rotates in the circumferential direction, a plurality of the locking pins can simultaneously abut against the driving spring in the axial direction to move the pressing portion in a direction away from the housing in the axial direction; alternatively, a plurality of the lock pins may be simultaneously separated from the drive spring in the axial direction to move the pressing portion in the axial direction in a direction toward the housing.

3. The clutch of claim 1, wherein each of said detents extends radially of said shaft.

4. A clutch according to claim 3 in which a plurality of said detents are intercepted by the same plane extending in said axial direction.

5. The clutch of claim 4, wherein a central axis of the shaft lies in the plane.

6. The clutch of claim 1, wherein the sliding portion includes first and second mounting holes spaced apart in the axial direction, the shaft extends through the sliding portion and is rotatably coupled to the first and second mounting holes, respectively, and the drive spring is disposed between the first and second mounting holes.

7. The clutch of claim 6, 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 being located between the first mounting portion and the second mounting portion, and wherein the shaft is rotatably connected at both axial ends to the first mounting portion and the second mounting portion, respectively.

8. The clutch according to claim 7, wherein a sliding groove is formed in the housing, the first mounting portion and the second mounting portion are respectively formed at two axial ends of the sliding groove, and the sliding portion is radially and limitedly mounted in the sliding groove and can slide in the sliding groove in the axial direction.

9. The clutch of claim 8, wherein the biasing mechanism further includes a first connecting member and a second connecting member spaced apart from each other in a radial direction of the shaft, the first connecting member and the second connecting member respectively extend in the axial direction and extend out of the sliding groove to be located outside the housing, and both ends in the axial direction are respectively connected to the sliding portion and the biasing portion, and the shaft is located between the first connecting member and the second connecting member in the radial direction.

10. The clutch as claimed in claim 1, wherein the electric pushing mechanism further comprises a motor, a main gear, and a driven gear, the motor, the main gear, and the driven gear are disposed in the housing, the main gear is disposed on an output shaft of the motor, and the driven gear is disposed on the rotating shaft and engaged with the main gear.

11. The clutch of any one of claims 1 to 10, further comprising a manual pushing mechanism, the manual pushing mechanism comprising:

the rotating piece is rotatably arranged on the shell and provided with a rotating operation end, and the rotating operation end and the jacking part are positioned on two opposite sides of the shell along the axial direction;

a pushing shaft slidably mounted in the housing in the axial direction, one end of the pushing shaft being connected to the rotary member and the other end being connected to the sliding portion via a third connecting member; wherein the content of the first and second substances,

the rotating piece is operated by the rotating operation end to rotate along the circumferential direction, the pushing shaft can move relative to the rotating piece along the axial direction, and the pushing shaft can drive the sliding part to slide relative to the shell along the axial direction.

12. The clutch of claim 11, wherein, in the axial direction, an end of the pushing shaft facing the rotating member is provided with an inclined surface, and an end of the rotating member facing the pushing shaft is provided with a projection cooperating with the inclined surface, the projection being capable of sliding along the inclined surface when the rotating member rotates to move the pushing shaft in the axial direction.

13. The clutch according to claim 11, wherein the third connecting member includes a first portion extending in a radial direction of the rotating shaft and a second portion extending in the axial direction, the first portion being connected at one end to the sliding portion and at the other end to the second portion, one of the second portion and the other end of the pushing shaft being provided with a convex portion and the other being provided with a concave portion, the convex portion being located in the concave portion.

14. The clutch of claim 11, wherein said other end of said push shaft is resiliently urged against said third connecting member.

15. The clutch of claim 11, further comprising an axial stop portion for limiting a final position of movement of the third connecting member in the axial direction in a direction toward the rotary member.

16. The clutch according to claim 11, wherein a rotation groove is further formed in the housing, the rotating member is axially installed in the rotation groove in a limited manner, a limiting block is arranged on the outer circumferential surface of the rotating member, a limiting groove extending in the circumferential direction is formed in the rotation groove, the limiting block is located in the limiting groove, and the limiting block is used for limiting the angle of the rotating member in the circumferential direction in the rotation groove.

17. The clutch of claim 1, wherein the push-up portion is arcuate.

18. An intelligent lock, comprising:

a door handle turn assembly;

a clutch pin;

the clutch of any one of claims 1 to 17, wherein the urging portion abuts against the clutch pin in the axial direction; wherein the content of the first and second substances,

the jacking portion is movable in the axial direction in a direction away from the housing to drive the clutch pin into engagement with the door handle turn assembly, and rotating the door handle turn assembly opens the door;

the jacking portion can move in the axial direction along the direction towards the shell to drive the clutch pin to be separated from the door handle rotating assembly, and the door can not be opened by rotating the door handle rotating assembly.

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