CN217518403U - Clutch mechanism and lock body - Google Patents

Abstract

The application discloses clutching mechanism and lock body. Based on the application, the clutch mechanism can improve the connection strength in a closed state by utilizing surface contact formed by the clutch lock block; moreover, the contact area required for the surface contact of the clutch lock piece can be ensured by the dimension in the axial direction without depending on the dimension expansion in the radial direction, thereby contributing to a reduction in the radial space occupied by the clutch mechanism. In addition, the position of the clutch locking block in the radial direction can be restrained to be synchronous with the clutch push plate, when the clutch state is in an off state, the clutch locking block can be prevented from moving due to external vibration by the restraint, therefore, the mistaken switching of the clutch state from the off state to the on state can be avoided, and the potential safety hazard of mistaken unlocking of the lock body can be eliminated.

Description

Clutch mechanism and lock body

Technical Field

The application relates to the field of lock bodies, in particular to a clutch mechanism suitable for a lock body and a lock body applying the clutch mechanism.

Background

And the clutch mechanism in the lock body is used for realizing the clutch state switching between the handle and the lock body. When the clutch state is the closed state, the handle can be in transmission connection with an unlocking execution mechanism in the lock body through the clutch mechanism, so that the unlocking execution mechanism can respond to the operating force applied to the handle to realize unlocking; when the clutch state is the off state, the operating force applied to the handle is not transmitted to the unlocking actuator, so that the handle can only idle relative to the lock body in response to the operating force.

In order to realize the switching of the clutch state, the clutch mechanism usually comprises two shaft bodies which are mutually sleeved and a movable pin, wherein the two shaft bodies are respectively connected with a handle and an unlocking execution mechanism; when the pin is driven by the driving force to penetrate into the pin holes of the two shaft bodies in the sleeving connection part along the radial direction, the two shaft bodies can synchronously rotate, so that the clutch state is set to be a closed state; when the driving force disappears, the pin can be automatically withdrawn out of the two shafts by the elastic force generated by the reset element so as to restore the free state that the two shafts can rotate relatively, and therefore the clutch state is set to be disconnected.

In order to facilitate smooth penetration and withdrawal of the pin, the pin is in clearance fit with the pin holes of the two shafts, so that the pin is in line contact with the pin holes only at a tangent position, and the connection strength between the two shafts through the pin is weak.

Although the connection strength can be improved by increasing the range of the length of the line contact, such improvement is limited, and it is necessary to increase the thickness of the overlap of the two shafts at the socket portion and to increase the length of the pin accordingly. Therefore, the radial space occupied by the pins which are completely withdrawn from the two shaft bodies outside the two shaft bodies is increased, and the occupied space of the clutch mechanism is larger.

It follows that a clutch mechanism using pins provides a low strength connection and occupies a large radial space.

SUMMERY OF THE UTILITY MODEL

In the embodiment of the application, a clutch mechanism and a lock body are provided, which are beneficial to improving the connection strength of the clutch mechanism in a closed state and reducing the radial space occupied by the clutch mechanism.

In one embodiment, a clutch mechanism comprises:

a first shaft body, an outer peripheral wall of which has a first open groove, and the first open groove penetrates the outer peripheral wall of the first shaft body in an axial direction;

a second shaft body coaxially mounted with the first shaft body, the outer peripheral wall of the second shaft body having a second open groove, and the second open groove penetrating the outer peripheral wall of the second shaft body in an axial direction;

a first reset element generating a first reset force between the first shaft and the second shaft, the first reset force being used to drive the phase of the second opening groove to align with the first opening groove;

a clutch push plate for translating in a radial direction of the first shaft in response to a driving force, the translation including an advancement toward the first shaft and a retraction away from the first shaft;

separation and reunion locking piece, wherein:

when the clutch lock block is pushed and embedded in the first open slot and the second open slot which are aligned with each other in phase by the fed clutch push plate, the clutch lock block is in surface contact with the slot walls of the first open slot and the second open slot, so that the clutch state between the first shaft body and the second shaft body is set to be a closed state;

when the clutch lock block is separated from the first open slot and the second open slot, the clutch state between the first shaft body and the second shaft body is released to be a disconnected state.

In some examples, optionally, the position of the clutch lock block in the radial direction of the first shaft is constrained to keep synchronous with the clutch push plate; wherein the clutch lock block is separated from the first open groove and the second open groove by the traction of the retreated clutch push plate.

In some examples, optionally, the clutch push plate has an arc-shaped chute; the clutch locking block is arranged on the clutch push plate through the arc-shaped sliding chute; the arc-shaped sliding groove forms limit constraint on the clutch lock block in the radial direction of the first shaft body; when the clutch lock block is embedded in the first open slot and the second open slot which are aligned with each other in phase, the center of the arc chute coincides with the axis of the first shaft body, so that the clutch lock block is allowed to swing along with the synchronous rotation of the second shaft body and the first shaft body.

In some examples, optionally, the clutch lock block comprises a lock block body and a hooking member; the lock block main body is embedded in the first open groove and the second open groove which are mutually aligned in phase and is in surface contact with groove walls of the first open groove and the second open groove; the hooking component is arranged on the arc-shaped sliding groove, and the arc-shaped sliding groove forms limiting constraint on the hooking component in the radial direction; when the center of the arc-shaped sliding chute coincides with the axis of the first shaft body, the hooking component slides in the arc-shaped sliding chute in response to the swinging of the clutch lock block and maintains the limit constraint generated by the arc-shaped sliding chute in the radial direction.

In some examples, optionally, the hooking member comprises a protruding arm and a peg; wherein the protruding arm protrudes outward from the lock block main body side; and the inserting column is positioned at the arm end of the convex arm and inserted into the arc-shaped sliding groove, the inserting column is in sliding fit with the arc-shaped sliding groove, and the arc-shaped sliding groove generates the limiting constraint on the inserting column in the radial direction.

In some examples, optionally, the first shaft body further has a guide member; the clutch locking block is in sliding fit with the guide member; the guide component is used for enabling the clutch locking block to be aligned with the first opening groove along the moving paths of the clutch push plate in the feeding and the retreating.

In some examples, optionally, the guide member includes a guide plate protruding outward from an outer peripheral wall of the first shaft body, and a guide groove provided in the guide plate in a radial direction of the first shaft body, and communicating with the first open groove; the clutch locking block is in sliding fit with the guide groove.

In some examples, optionally, further comprising: a third shaft body that is provided coaxially with the first shaft body, an outer peripheral wall of the third shaft body having a third opening groove, and the third opening groove penetrating the outer peripheral wall of the third shaft body in an axial direction; a second reset element generating a second reset force between the first shaft and the third shaft, the second reset force being used to drive the phase of the third open slot to align with the first open slot; the second shaft body is arranged at the first end of the first shaft body, the third shaft body is arranged at the second end of the first shaft body, and the first end and the second end are respectively the opposite ends of the first shaft body; and: when the clutch locking piece is embedded in the first open groove and the second open groove, which are aligned in phase with each other, the clutch locking piece is further embedded in the third open groove, which is aligned in phase with the first open groove, and the clutch locking piece is further brought into surface contact with a groove wall of the third open groove, so that a clutch state between the first shaft body and the third shaft body is set to an on state; when the clutch locking block is disengaged from the first open groove and the second open groove, the clutch locking block is further disengaged from the third open groove, so that the clutch state between the first shaft body and the third shaft body is released to be the disconnected state.

In some examples, optionally, the first shaft body has a first square hole; the second shaft body is provided with a second square hole; the third shaft body is provided with a third square hole; a first square rod in transmission connection with the first handle penetrates through the second square hole, and a second square rod in transmission connection with the second handle penetrates through the third square hole; and, any one in the first square stick and the second square stick further wears to establish in the first square hole, or, first square stick and the second square stick all dodge outside the first square hole.

In some examples, optionally, when the second open slot is phase aligned with the first open slot, the second open slot communicates with the first open slot; when the phase of the third opening groove is aligned with that of the first opening groove, the third opening groove is communicated with the first opening groove; the separation and reunion locking piece includes the locking piece main part, is used for the embedding first open slot the second open slot and in the slot space that third open slot intercommunication formed, and with first open slot with the second open slot and the cell wall in third open slot all forms the face contact.

In another embodiment, a lock body includes a clutch mechanism as described in previous embodiments.

In some examples, optionally, the lock-opening and lock-closing device further comprises a lock-opening and lock-closing actuator, wherein the first shaft body further has a linkage boss located on the outer peripheral wall of the first shaft body, and the linkage boss is used for being in transmission fit with the lock-opening actuator

Based on the embodiment, the clutch lock block of the clutch mechanism can make the clutch state between the first shaft body and the second shaft body be the closed state through surface contact with the first open slot of the first shaft body and the second open slot of the second shaft body, so that the connection strength of the clutch mechanism in the closed state can be improved by utilizing the surface contact formed by the clutch lock block compared with a pin-based line contact mode; moreover, the contact area required for achieving the face contact of the clutch lock piece with the first open groove and the second open groove can be ensured by the dimension in the axial direction without having to rely on the dimension expansion in the radial direction as in the case of using a pin, thereby contributing to a reduction in the radial space occupied by the clutch mechanism.

Drawings

The following drawings are only schematic illustrations and explanations of the present application, and do not limit the scope of the present application:

FIG. 1 is an exploded view of a clutch mechanism according to an embodiment of the present application;

FIG. 2 is a schematic view of an assembly structure of the clutch mechanism shown in FIG. 1 in a clutch closed state;

FIG. 3 is a partial cross-sectional view of FIG. 2;

FIG. 4 is a schematic view of an assembled structure of the clutch mechanism shown in FIG. 1 in a clutch-off state;

FIG. 5 is a partial cross-sectional view of FIG. 4;

FIG. 6 is a first simplified structural schematic of the clutch mechanism of FIG. 1;

FIG. 7 is a second simplified structural schematic of the clutch mechanism of FIG. 1;

fig. 8 is a schematic view showing an example of a shaft body assembling structure in the clutch mechanism shown in fig. 1;

FIG. 9 is a schematic view of the clutch lock block, the clutch push plate and the first shaft in the clutch mechanism shown in FIG. 1;

FIG. 10 is a schematic view of the clutch lock block and the clutch push plate in the clutch mechanism shown in FIG. 1;

fig. 11 is a schematic view illustrating an assembled state of the clutch lock block and the first shaft body in the clutch mechanism shown in fig. 1.

Description of the reference numerals

10 first shaft body

11 first open slot

121 first positioning boss

122 second positioning boss

13 first stop member

15 first square hole

16 guide member

161 guide plate

162 guide groove

171 first poking column

172 second shifting post

18 first linkage boss

19 second linkage boss

20 second shaft body

21 second open slot

22 first positioning groove

23 second stop member

25 second square hole

27 first accommodation groove

28 first shifting column groove

30 third shaft body

31 third opening groove

32 second positioning groove

33 third stop member

35 third square hole

37 second accommodation groove

38 second post groove

50 clutch lock block

51 locking block main body

52 hook component

521 protruding arm

522 inserting column

53 counterweight lug

60 clutch push plate

600 arc chute

71 first reset element

72 second reduction element

80 drive module

81 cable

82 connector

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is further described in detail below by referring to the accompanying drawings and examples.

Fig. 1 is an exploded view of a clutch mechanism according to an embodiment of the present application. Fig. 2 is a schematic view of an assembly structure of the clutch mechanism shown in fig. 1 in a clutch-on state. Fig. 3 is a partial cross-sectional view of fig. 2. Fig. 4 is a schematic view of an assembly structure of the clutch mechanism shown in fig. 1 in a clutch-off state. Fig. 5 is a partial cross-sectional view of fig. 4.

Referring to fig. 1 in conjunction with fig. 2 to 5, in this embodiment, the clutch mechanism may be installed in the lock body, and the clutch mechanism includes a first shaft 10, a second shaft 20 and a third shaft 30 coaxially installed along the axial direction, wherein the second shaft 20 may be installed at a first end of the first shaft 10, the third shaft 30 may be installed at a second end of the first shaft 10, and the first end and the second end of the first shaft 10 are opposite ends of the first shaft 10, respectively.

In actual use, the axial direction of the first shaft 10, the second shaft 20, and the third shaft 30 may be a direction perpendicular to the door.

In actual use, the first shaft 10 may be in transmission connection with an unlocking actuator of the lock body. For example, the peripheral wall of the first shaft body 10 may have a first linkage boss 18 and a second linkage boss 19 for driving connection with the unlocking actuator of the lock body. Any one of the first linkage boss 18 and the second linkage boss 19 can be in transmission connection with a first part of the unlocking actuating mechanism for driving the latch bolt assembly, and the other one of the first linkage boss 18 and the second linkage boss 19 can be in transmission connection with a second part of the unlocking actuating mechanism for driving the latch bolt assembly. It is understood that the primary purpose of the first and second coupling bosses 18 and 19 is to provide the function of driving connection of the first shaft 10 with the unlocking actuator, and the structural features and driving manner of the unlocking actuator itself are not limited in any way in the embodiments of the present application. In addition, in order to limit the rotation stroke of the first shaft body 10 in the lock body, the outer peripheral wall of the first shaft body 10 may further have a first stop member 13, and the first stop member 13 may be configured to be in limit fit with a limit structure correspondingly configured to restrict the rotation stroke of the first shaft body 10 in the lock body.

Moreover, in practical use, the second shaft 20 may be in transmission connection with the first handle through the first square rod, and the third shaft 30 may be in transmission connection with the second handle through the second square rod:

when the clutch state between the first shaft 10 and the second shaft 20 is in the off state, the second shaft 20 can rotate relative to the first shaft 10 in response to a first operating force applied to the first handle, so as to generate the effect that the first handle idles and the unlocking of the unlocking execution mechanism cannot be triggered through the first shaft 10;

when the clutch state between the first shaft 10 and the second shaft 20 is in the closed state due to the unlocking verification, the second shaft 20 can drive the first shaft 10 to rotate synchronously in response to the first operating force applied to the first handle, so as to generate the effect that the first handle triggers the unlocking of the unlocking execution mechanism through the first shaft 10;

when the clutch state between the first shaft 10 and the third shaft 30 is in the off state, the third shaft 30 can rotate relative to the first shaft 10 in response to a second operation force applied to the second handle, so as to generate an effect that the second handle idles and the unlocking actuator cannot be triggered to unlock through the first shaft 10;

when the clutch state between the first shaft 10 and the third shaft 30 is in the closed state due to the verification of unlocking, the third shaft 30 can drive the first shaft 10 to rotate synchronously in response to the second operating force applied to the second handle, so as to generate the effect that the second handle triggers the unlocking of the unlocking execution mechanism through the first shaft 10.

Similar to the first stop member 13 of the first shaft 10, the outer peripheral wall of the second shaft 20 may have a second stop member 23, and the outer peripheral wall of the third shaft 30 may have a third stop member 33, which are respectively used for being in limit fit with a limit structure correspondingly arranged in the lock body for restricting the rotation strokes of the second shaft 20 and the third shaft 30.

In practical use, each of the first handle and the second handle may be a rotating handle or a push-pull handle equipped with a push-pull module, any one of the first handle and the second handle may be an outer handle located outside the door leaf, and the other one of the first handle and the second handle may be an inner handle located inside the door leaf, that is, in this embodiment, by providing the second shaft 20 and the third shaft 30, which can be switched between clutch states, at opposite ends of the first shaft 10, respectively, in order to make the installation direction of the lock body applying the clutch mechanism support the reversing of the inside of the door leaf and the outside of the door leaf, that is, any one side of the lock body may face the inside of the door leaf or the outside of the door leaf.

In addition, for the inner handle inside the door leaf, there may be a need to dispense with verification of unlocking, if so:

when the first handle in transmission connection with the second shaft body 20 through the first square rod is an inner handle, the first square rod may be further connected with the first shaft body 10, at this time, even if the clutch state between the first shaft body 10 and the second shaft body 20 is an off state, the first shaft body 10 and the second shaft body 20 may still be set to be synchronously rotatable by the first square rod, and the clutch state between the first shaft body 10 and the third shaft body 30 allows the first shaft body 10 and the third shaft body 30 to relatively rotate when in the off state;

when the second handle in transmission connection with the third shaft body 30 through the second square bar is an inner handle, the second square bar may be further connected with the first shaft body 10, and at this time, even if the clutch state between the first shaft body 10 and the third shaft body 30 is an off state, the first shaft body 10 and the third shaft body 30 may still be normally set to be synchronously rotatable by the second square bar, and the clutch state between the first shaft body 10 and the second shaft body 20 allows the first shaft body 10 and the second shaft body 20 to relatively rotate when in the off state.

For example, the first shaft 10 may have a first square hole 15, the second shaft 20 may have a second square hole 25, and the third shaft 30 may have a third square hole 35, wherein the first square rod in transmission connection with the first handle is inserted through the second square hole 25, the second square rod in transmission connection with the second handle is inserted through the third square hole 35, and:

any one of the first square rod and the second square rod may further be inserted into the first square hole 15 of the first shaft body 10, so that the corresponding one of the second shaft body 20 and the third shaft body 30 and the first shaft body 10 may rotate synchronously when the clutch state is the off state, and the other may rotate relative to the first shaft body 10 when the clutch state is the off state; alternatively, the first and second square bars may be retracted out of the first hole 15 of the first shaft 10, so that each of the second and third shaft bodies 20 and 30 can rotate relative to the first shaft 10 when the clutch state is the disengaged state.

It is understood that the clutch mechanism may only comprise the first shaft 10 and the second shaft 20, or only the first shaft 10 and the third shaft 30, if the installation direction of the lock body to which the clutch mechanism is applied is not required to support the reversing adaptation of the inner side of the door leaf to the outer side of the door leaf.

Fig. 6 is a first simplified structural schematic diagram of the clutch mechanism shown in fig. 1. Fig. 7 is a second simplified structural schematic of the clutch mechanism shown in fig. 1. Fig. 6 shows a case that the clutch mechanism only includes the first shaft 10 and the second shaft 20 because the lock body does not need to support the reversing adaptation, at this time, the first shaft 10 may be in transmission connection with the second handle through the second square rod penetrating through the first square hole 15 in addition to the unlocking execution mechanism of the lock body, and the second shaft 20 may still be in transmission connection with the first handle through the first square rod; fig. 7 shows the clutch mechanism only including the first shaft 10 and the third shaft 30 because the lock body does not need to support the reversing adaptation, and at this time, the first shaft 10 may be in transmission connection with the first handle through the first square rod penetrating through the first square hole 15 in addition to the unlocking execution mechanism of the lock body, and the third shaft 30 may still be in transmission connection with the second handle through the second square rod.

Moreover, as can be seen from a comparison of fig. 6 and 7, the second shaft body 20 and the third shaft body 30 have substantially the same essential function, and are in transmission connection with the handle through the square bar, so that the numbers of the "second" and the "third" used in the names of the second shaft body 20 and the third shaft body 30 can be interchanged.

Referring back to fig. 1 in conjunction with fig. 2 to 5, in order to realize the switching of the clutch state, the clutch mechanism in this embodiment further includes a clutch lock block 50 and a clutch push plate 60, and:

the outer peripheral wall of the first shaft body 10 has a first open groove 11, and the first open groove 11 may penetrate the outer peripheral wall of the first shaft body 10 in the axial direction;

the outer peripheral wall of the second shaft body 20 has a second open groove 21, and the second open groove 21 may penetrate the outer peripheral wall of the second shaft body 20 in the axial direction;

the outer circumferential wall of the third shaft body 20 has a third opening groove 31, and the third opening groove 31 may penetrate the outer circumferential wall of the third shaft body 30 in the axial direction.

The clutch pusher 60 is configured to translate in a radial direction of the first shaft 10 in response to a driving force, wherein the driving force may be triggered to be generated in response to an authentication success event of the unlocking authentication, and the translation of the clutch pusher 60 includes a feeding toward the first shaft 10 and a retracting away from the first shaft 10.

For example, the clutch mechanism in this embodiment may include a driving module 80, the driving module 80 may include a housing, a power element such as a motor provided inside the housing, and a transmission assembly such as a reducer provided inside the housing, the power element may generate a driving force, and the driving force generated by the power element in response to a certification success event of the unlocking certification may be applied to the clutch pusher 60 through the transmission assembly, thereby driving the clutch pusher 60 to generate the translation of the advance or the retreat.

In this embodiment, for example, the power element is powered by an external power source, that is, the driving module 80 may further include a cable 81 and a connector 82 located at an end of the cable 81, where the connector 82 is used to connect a power supply interface of the external power source, so that the power supplied by the external power source is supplied to the power element in the driving module 80 through the cable 81, and the connector 82 may further be used to connect a signal interface integrated with the power supply interface of the external power source, so that an external control signal can be supplied to the power element in the driving module 80 through the cable 81.

It will be appreciated that the deployment of a self-powered power source such as a battery in the drive module 80 is not excluded from this embodiment. Even if a self-powered power supply such as a battery is deployed in the drive module 80, the cable 81 and the connector 82 at the end of the cable 81 may still be retained, in which case the connector 82 may be used only for connecting a signal interface of an external control device.

The clutch lock block 50 is configured to:

when the clutch lock block 50 is pushed by the fed clutch push plate 60 to be embedded in the first open groove 11, the second open groove 21 and the third open groove 31 which are aligned with each other in phase, the clutch lock block 50 is in surface contact with the groove walls of the first open groove 11, the second open groove 21 and the third open groove 31, so that the clutch state between the first shaft body 10 and the second shaft body 20 and the clutch state between the first shaft body 10 and the third shaft body 30 are both set to be the closed state, and at this time, even if the clutch state between the first shaft body 10 and the second shaft body 20 is set to be the closed state by the first square rod or the clutch state between the first shaft body 10 and the third shaft body 30 is set to be the closed state by the second square rod, the embedding of the clutch lock block 50 in the first open groove 11, the second open groove 21 and the third open groove 31 is not hindered;

when the clutch lock 50 is disengaged from the first open groove 11, the second open groove 21, and the third open groove 31, the clutch state between the first shaft 10 and the second shaft 20 and the clutch state between the first shaft 10 and the third shaft 30 are both released to the disengaged state, and at this time, if the first shaft 10 and the second shaft 20 are normally connected by the first square bar or the first shaft 10 and the third shaft 30 are connected by the second square bar, the first shaft 10 and the second shaft 20 may be allowed to synchronously rotate or the first shaft 10 and the third shaft 30 may be allowed to synchronously rotate.

For a simplified structure as shown in fig. 6, that is, the first shaft 10 may be in transmission connection with the unlocking actuator of the lock body and in transmission connection with the second handle through the second square rod, the second shaft 20 may be in transmission connection with the first handle through the first square rod, and the clutch lock block 50 may be configured to:

when the clutch lock block 50 is pushed by the fed clutch push plate 60 to be embedded in the first opening groove 11, the second opening groove 21 and the third opening groove 31 which are aligned with each other in phase, the clutch lock block 50 is in surface contact with the groove walls of the first opening groove 11 and the second opening groove 21, so that the clutch state between the first shaft body 10 and the second shaft body 20 is set to be a closed state;

when the clutch lock 50 is disengaged from the first open groove 11 and the second open groove 21, the clutch state between the first shaft body 10 and the second shaft body 20 is released to the disconnected state.

That is, the structure shown in fig. 1 may be regarded as further including the third shaft body 30 with respect to the simplified structure shown in fig. 6, and:

when the clutch lock block 50 is embedded in the first open groove 11 and the second open groove 21, which are aligned in phase with each other, the clutch lock block 50 is further embedded in the third open groove 31, which is aligned in phase with the first open groove 11, and the clutch lock block 50 is further in surface contact with both groove walls of the third open groove 31, so that the clutch state between the first shaft body 10 and the third shaft body 30 is set to the closed state;

when the clutch lock block 50 is pulled by the retreating clutch push plate 60 to be disengaged from the first opening groove 11 and the second opening groove 21, the clutch lock block 50 is further disengaged from the third opening groove 31, so that the clutch state between the first shaft body 10 and the third shaft body 30 is released to the disengaged state.

The principle of the simplified structure shown in fig. 7 is substantially the same as that of the simplified structure shown in fig. 6, and the description thereof is omitted.

According to the above embodiment, the clutch lock block 50 of the clutch mechanism can set the clutch state between the first shaft 10 and the second shaft 20 and/or the clutch state between the first shaft 10 and the third shaft 30 to the engaged state by surface contact with the first open groove 11 of the first shaft 10, the second open groove 21 of the second shaft 20, and/or the third open groove 31 of the third shaft 30, and thus the connection strength of the clutch mechanism in the engaged state can be improved by surface contact with the clutch lock block 50 as compared with the line contact method using pins.

Moreover, the contact area required to achieve the surface contact of the clutch lock 50 with the first open groove 11, and the second open groove 21 and/or the third open groove 31 can be ensured by the dimension in the axial direction without having to rely on the dimension expansion in the radial direction as in the case of using a pin, thereby contributing to a reduction in the radial space occupied by the clutch mechanism.

As described above, the engagement of the clutch lock 50 with the first open groove 11, and the second open groove 21 and/or the third open groove 31 in a surface contact manner requires the phases of the first open groove 11, and the second open groove 21 and/or the third open groove 31 to be aligned, so that a reset mechanism for urging the phases of the first open groove 11, and the second open groove 21 and/or the third open groove 31 to be aligned may be further provided in the clutch mechanism of this embodiment, as shown in fig. 1, fig. 6, and fig. 7:

in the case that the clutch mechanism includes the second shaft body 20 as shown in fig. 1 and 6, the clutch mechanism may further include a first restoring member 71, and the first restoring member 71 may generate a first restoring force between the first shaft body 10 and the second shaft body 20, the first restoring force being used to drive the phase of the second open grooves 21 to be aligned with the first open grooves 11;

in the case that the clutch mechanism includes the third shaft body 30 as shown in fig. 1 and 7, the clutch mechanism may further include a second restoring element 72, and the second restoring element 72 may generate a second restoring force between the first shaft body 10 and the third shaft body 30, the second restoring force being used to drive the phase of the third opening groove 31 to be aligned with the first opening groove 11.

Fig. 8 is a schematic view showing an example of a shaft body assembling structure in the clutch mechanism shown in fig. 1. Referring to fig. 8, taking an example that the clutch mechanism includes the first shaft body 10, the second shaft body 20 and the third shaft body 30, and the first return element 71 and the second return element 72 are both springs, an end surface of a first end of the first shaft body 10 may have a first dial post 171 protruding in the axial direction, and an end surface of a second end of the first shaft body 10 may have a second dial post 172 protruding in the axial direction.

Accordingly, the end surface of the second shaft body 20 facing the first shaft body 10 may have a first receiving groove 27 for disposing the first return element 71 (e.g., the first spring), the first receiving groove 27 may have an arc shape bent around the axial direction, so that the first return element 71 (e.g., the first spring) may be disposed in the first receiving groove 27 in a bent state, and the end surface of the second shaft body 20 facing the first shaft body 10 further has a first toggle column groove 28 at one end of the first receiving groove 27.

When the first opening groove 11 of the first shaft body 10 is aligned with the second opening groove 21 of the second shaft body 20, the first column driver 171 of the first shaft body 10 is located in the first column driver groove 28;

when the second shaft body 20 rotates relative to the first shaft body 10 in response to a first operating force applied to the first handle, or when the first shaft body 10 rotates relative to the second shaft body 20 in response to a second operating force applied to the second handle, there is a phase shift between the first open groove 11 of the first shaft body 10 and the second open groove 21 of the second shaft body 20, and the first toggle column 171 of the first shaft body 10 can move from the first toggle column groove 28 into the first receiving groove 27 to press the first return element 71 (e.g., a first spring);

in response to the disappearance of the first or second operating force causing the phase shift, the elastic force generated by the pressed first return element 71 (e.g., the first spring) may urge the first toggle member 171 to return from the first receiving groove 27 to the first toggle member groove 28, and the return of the first toggle member 171 can urge the return of the second shaft body 20 relative to the first shaft body 10 to return the first opening groove 11 of the first shaft body 10 and the second opening groove 21 of the second shaft body 20 to the phase alignment state.

Similarly, the end surface of the third shaft body 30 facing the first shaft body 10 may have a second receiving groove 37 for arranging a second return element 72 (e.g., a second spring), the second receiving groove 37 may have an arc shape bent around the axis direction, so that the second return element 72 (e.g., the second spring) may be arranged in the second receiving groove 37 in a bent state, and the end surface of the third shaft body 30 facing the first shaft body 10 further has a second stud groove 38 at one end of the second receiving groove 37.

When the first opening groove 11 of the first shaft 10 is aligned with the third opening groove 31 of the third shaft 30, the second shift ram 172 of the first shaft 10 is located in the second shift ram groove 38;

when the third shaft body 30 rotates relative to the first shaft body 10 in response to the second operation force applied to the second handle, or when the first shaft body 10 rotates relative to the second shaft body 20 in response to the first operation force applied to the first handle, there is a phase shift between the first open slot 11 of the first shaft body 10 and the third open slot 31 of the third shaft body 30, and the second dial post 172 of the first shaft body 10 can move from the second dial post slot 38 into the second receiving slot 37 to press the second return element 72 (e.g., a second spring);

in response to the disappearance of the first or second operation force causing the phase shift, the elastic force generated by the pressed second return element 72 (e.g., the second spring) may urge the second stem 172 to return from the second receiving groove 37 to the second stem groove 38, and the return of the second stem 172 may urge the return revolution of the third shaft body 30 relative to the first shaft body 10, so that the first opening groove 11 of the first shaft body 10 and the third opening groove 31 of the third shaft body 30 are restored to the phase alignment state.

Still referring to fig. 8, in conjunction with fig. 1 and fig. 6 and 7:

in the case where the clutch mechanism includes the second shaft body 20 as shown in fig. 1 and 6, in order to limit the phase stroke of the relative rotation between the first shaft body 10 and the second shaft body 20, the end surface of the first end of the first shaft body 10 may further have a first positioning boss 121, the end surface of the second shaft body 20 facing the first shaft body 10 may further have a first positioning groove 22, the first positioning groove 22 may have an arc shape that is curved around the axial direction, and the first positioning boss 121 may be slidably engaged with the first positioning groove 22, so that the phase stroke of the relative rotation between the first shaft body 10 and the second shaft body 20 may be restricted within a range of the sliding engagement of the first positioning boss 121 with the first positioning groove 22;

in the case that the clutch mechanism shown in fig. 1 and 7 includes the third shaft body 30, in order to limit the phase stroke of the relative rotation between the first shaft body 10 and the third shaft body 30, the end surface of the second end of the first shaft body 10 may further have a second positioning boss 122, the end surface of the third shaft body 30 facing the first shaft body 10 may further have a second positioning groove 32, the second positioning groove 32 may have an arc shape that is curved around the axis direction, and the second positioning boss 122 may be in sliding fit with the second positioning groove 32, so that the phase stroke of the relative rotation between the first shaft body 10 and the third shaft body 30 may be restricted within a range of the sliding fit of the second positioning boss 122 and the second positioning groove 32.

The example spring-based assembly structure shown in fig. 8 is merely an exemplary manner that may support the return swivel and travel limit between the first shaft 10 and the second shaft 20 and/or the third shaft 30 for ease of understanding, and it is to be understood that such an assembly structure should not be construed as being limited to the structure shown in fig. 8. For example, a torsion spring may be used as at least one of the first and second returning elements 71 and 72, and accordingly, the returning rotation between the first shaft body 10 and the second shaft body 20 and/or the third shaft body 30 may be realized by providing a structure for limiting the legs of the torsion spring. For example, the sliding engagement between the boss and the groove provided on the end face for stroke limitation may be replaced with another configuration provided on the outer peripheral wall.

Besides the technical effect of helping to reduce the occupied radial space while ensuring the connection strength, the clutch mechanism in the embodiment of the present application may further have the technical effect of improving the safety through other improvements.

The improvement in safety described herein is relative to the pin approach. Specifically, in the case of using a pin as a connecting element for clutch switching, when the clutch state is an open state, the pin is only restrained by an elastic reset force urging the pin to exit from the shaft body, but if the lock body where the clutch mechanism is located is subjected to external shock such as knocking and the like and the external shock can cause the pin to shift against the elastic reset force restraint, the shifted pin may erroneously penetrate through the pin holes of the two shaft bodies in the sleeve part, thereby causing the clutch state to be erroneously switched to a closed state.

In the embodiment of the present application, in addition to using the clutch lock block 50 instead of a pin as a connecting element for clutch switching, the position of the clutch lock block 50 in the radial direction of the first shaft body 10 may be restricted to be synchronized with the clutch push plate 60, that is, the clutch lock block 50 is not only pushed and embedded in the first open groove 11, and the second open groove 21 and/or the third open groove 31 by the fed clutch push plate 60, but also the clutch lock block 50 may be disengaged from the first open groove 11, and the second open groove 21 (as in the case shown in fig. 1 or fig. 6) and/or the third open groove 31 (as in the case shown in fig. 1 or fig. 7) by the traction of the retreated clutch push plate 60, and the retreated clutch push plate 60 maintains a continuous traction state for the clutch lock block 50 during the clutch state is in the disconnection state.

It can be seen that, since the position of the clutch lock block 50 in the radial direction of the first shaft 10 is constrained to be synchronous with the clutch push plate 60, when the clutch state is the off state, the clutch lock block 50 is constrained in the radial direction to prevent the clutch lock block 50 from shifting due to external vibration, so that the erroneous switching of the clutch state from the off state to the on state due to the shifting of the connecting element (i.e., the clutch lock block 50) can be avoided, and the potential safety hazard of the lock body that the lock body is unlocked by mistake can be eliminated.

Fig. 9 is a schematic view of an assembly relationship between a clutch lock block, a clutch push plate and a first shaft body in the clutch mechanism shown in fig. 1. Fig. 10 is a schematic view of an assembled state of a clutch lock block and a clutch push plate in the clutch mechanism shown in fig. 1. Fig. 11 is a schematic view illustrating an assembled state of the clutch lock block and the first shaft body in the clutch mechanism shown in fig. 1.

Referring to fig. 9 and 10, in the embodiment of the present application, whether the clutch mechanism includes the first shaft 10 and one of the second shaft 20 and the third shaft 30, or includes the first shaft 10 and the second shaft 20 and the third shaft 30, in order to make the position of the clutch lock block 50 in the radial direction of the first shaft 10 constrained to be synchronous with the clutch push plate 60, the clutch push plate 60 may have an arc-shaped sliding groove 600.

The clutch lock block 50 may be mounted on the clutch push plate 60 through the arc chute 600, and the arc chute 600 forms a limiting constraint on the clutch lock block 50 in the radial direction of the first shaft 10, so that when the clutch lock block 50 is embedded in the first open slot 11, the second open slot 21 and/or the third open slot 31, the phases of which are aligned with each other:

the center of the arc chute 600 coincides with the axis of the first shaft 10 to allow the clutch lock 50 to swing along with the synchronous rotation of the second shaft 20 and the first shaft 10 and/or the synchronous rotation of the third shaft 30 and the first shaft 10.

In order to fit the arc-shaped sliding groove 600 of the clutch pushing plate 60 to realize the installation of the clutch lock block 50 on the clutch pushing plate 60 through the arc-shaped sliding groove 600, the clutch lock block 50 may include a lock block body 51 and a hooking member 52.

The lock block body 51 is configured to be embedded in the first open groove 11, the second open groove 21 and/or the third open groove 31, which are mutually aligned in phase, where "and/or" is intended to mean:

in the case where the clutch mechanism includes the second shaft body 20 and the third shaft body 30 as shown in fig. 1, the lock block main body 51 is adapted to be inserted into the first opening groove 11, the second opening groove 21 and the third opening groove 31 which are aligned in phase with each other, for example, the second opening groove 21 may communicate with the first opening groove 11 when phase-aligned with the first opening groove 11, the third opening groove 31 may communicate with the first opening groove 11 when phase-aligned with the first opening groove 11, the lock body 51 is inserted into a groove space formed by the first open groove 11, the second open groove 21, and the third open groove 31 and is in surface contact with groove walls of the first open groove 11, the second open groove 21, and the third open groove 31, and at this time, the dimension of the lock block main body 51 in the axial direction is not less than the sum of the groove lengths of the first opening groove 11, the second opening groove 21 and the third opening groove 31 in the axial direction;

in the case where the clutch mechanism shown in fig. 6 includes the second shaft body 20 but does not include the third shaft body 30, the lock block main body 51 is configured to be inserted into the first open groove 11 and the second open groove 21 that are aligned in phase, for example, the second open groove 21 may communicate with the first open groove 11 when aligned in phase with the first open groove 11, and the lock block main body 51 is configured to be inserted into a groove space formed by the first open groove 11 and the second open groove 21 and to be in surface contact with both groove walls of the first open groove 11 and the second open groove 21, where a dimension of the lock block main body 51 in the axial direction is not smaller than a sum of groove lengths of the first open groove 11 and the second open groove 21 in the axial direction;

in the case where the clutch mechanism shown in fig. 7 includes the third shaft body 30 but does not include the third shaft body 30, the lock block main body 51 is configured to be inserted into the first open groove 11 and the third open groove 31 that are aligned in phase, for example, the third open groove 31 may communicate with the first open groove 11 when aligned in phase with the first open groove 11, and the lock block main body 51 is configured to be inserted into a groove space formed by the first open groove 11 and the third open groove 31 communicating with each other and to be in surface contact with both groove walls of the first open groove 11 and the third open groove 31, in which case the dimension of the lock block main body 51 in the axial direction is not smaller than the sum of the groove lengths of the first open groove 11 and the third open groove 31 in the axial direction.

In order to regulate the shape of the lock block main body 51, the groove widths of the first opening groove 11, the second opening groove 21, and the third opening groove 31 in the rotational direction may be set to be the same.

The hooking member 52 may be mounted to the arc runner 600, wherein the arc runner 600 forms a limiting constraint of the hooking member 52 in the radial direction, and:

when the center of the arc chute 600 coincides with the axis of the first shaft body 10, the hooking member 52 may slide within the arc chute 600 and maintain the limit constraint generated in the radial direction by the arc chute 600 in response to the swing of the clutch lock block 50 with the synchronous rotation of the second shaft body 20 and the first shaft body 10 and/or the synchronous rotation of the third shaft body 30 and the first shaft body 10.

For example, the hooking member 52 may include a protruding arm 521 and a post 522, wherein the protruding arm 521 protrudes outward from the lock block main body 51, and the post 522 is located at an arm end of the protruding arm 521 and inserted into the arc chute 600, accordingly, the post 522 may be in sliding engagement with the arc chute 600, and the arc chute 600 may generate a limit constraint on the post 522 to the clutch lock block 50 in the radial direction.

In addition, as can also be seen from fig. 9 and 10, the lock block body 51 is located on the outer side of the clutch push plate 60 toward the first shaft body 10 (i.e., the feed side of the clutch push plate 60), and the hooking member 52 may be located at one end of the lock block body 51 in the axial direction. Therefore, when the clutch push plate 60 is fed, both the lock block main body 51 and the hooking member 52 may receive a pushing force generated by the feeding of the clutch push plate 60, but when the clutch push plate 50 is retracted, only the hooking member 52 located at one end of the lock block main body 51 may receive a traction force generated by the retraction of the clutch push plate 60, and thus, the lock block main body 51 may be inclined when being disengaged with the retracted clutch push plate 60.

In practical use, as described above, the axial direction of the first shaft 10, the second shaft 20 and the third shaft 30 may be a direction perpendicular to the door leaf, and the moving direction of the clutch pushing plate 60 to advance or retreat may be parallel to the door leaf, and based on such a direction disposition, in the present embodiment, the feeding direction of the clutch pushing plate 60 may be disposed in a vertically upward direction and the retreating direction of the clutch pushing plate 60 may be disposed in a vertically downward direction, and the clutch locking block 50 may further include a weight protrusion 53 at the other end of the locking block body 51 in the axial direction, so that, when the clutch pushing plate 50 retreats, although only the hooking member 52 at one end of the locking block body 51 may receive a vertically downward traction force generated by the retreating of the clutch pushing plate 60, the vertically downward gravity compensation generated by the weight protrusion 53 at the other end of the locking block body 51 may balance the forces at the two ends of the locking block body 51, thus, the inclination of the lock block main body 51 when the clutch push plate 60 retreats is disengaged can be reduced or even avoided.

Referring to fig. 9 in conjunction with fig. 11, in the embodiment of the present application, whether the clutch mechanism includes the first shaft 10 and one of the second shaft 20 and the third shaft 30, or includes the first shaft 10 and the second shaft 20 and the third shaft 30, in order to make the movement of the clutch lock block 50 more stable and accurate, the first shaft 10 may further have the guide member 16.

Accordingly, the clutch lock 50 may be slidably engaged with the guide member 16, wherein the guide member 16 is used to align the clutch lock 50 with the first opening groove 11 along the moving path of the clutch push plate 60, and the clutch lock 50 aligned with the first opening groove 11 may also be simultaneously aligned with the second opening groove 21 and/or the third opening groove 31 that are phase-aligned with the first opening groove 11 based on the first reset force generated by the first reset element 71 and the second reset force generated by the second reset element 72.

For example, the guide member 16 may include a guide plate 161 and a guide groove 162, wherein the guide plate 161 may protrude outward from the outer circumferential wall of the first shaft body 10, the guide groove 162 may be provided at the guide plate 161 in the radial direction of the first shaft body 10, and the guide groove 162 may communicate with the first opening groove 11; accordingly, the clutch lock 50 (e.g., lock body 51) can be slidably engaged with the guide groove 162.

In another embodiment of the present application, there is also provided a lock body, which may include the clutch mechanism in the foregoing embodiments.

Further, the lock body may further include an unlocking actuator, wherein the first shaft body 10 further has a linkage boss (e.g., at least one of the first linkage boss 18 and the second linkage boss 19) located on the outer peripheral wall of the first shaft body 10, and the linkage boss is configured to be in driving engagement with the unlocking actuator.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.

Claims (11)

1. A clutch mechanism, comprising:

a first shaft body (10), wherein the peripheral wall of the first shaft body (10) is provided with a first opening groove (11), and the first opening groove (11) penetrates through the peripheral wall of the first shaft body (10) along the axial direction;

a second shaft body (20), wherein the second shaft body (20) is coaxially arranged with the first shaft body (10), the outer peripheral wall of the second shaft body (20) is provided with a second opening groove (21), and the second opening groove (21) penetrates through the outer peripheral wall of the second shaft body (20) along the axial direction;

a first restoring element (71), the first restoring element (71) generating a first restoring force between the first shaft body (10) and the second shaft body (20), the first restoring force for driving the phase of the second opening groove (21) to be aligned with the first opening groove (11);

a clutch pusher (60), the clutch pusher (60) being configured to translate in a radial direction of the first shaft (10) in response to a driving force, the translation comprising an advancement towards the first shaft (10) and a retraction away from the first shaft (10);

a clutch lock block (50), wherein:

when the clutch lock block (50) is pushed by the fed clutch push plate (60) to be embedded in the first opening groove (11) and the second opening groove (21) which are mutually aligned in phase, the clutch lock block (50) is in surface contact with the groove walls of the first opening groove (11) and the second opening groove (21), so that the clutch state between the first shaft body (10) and the second shaft body (20) is set to be a closed state;

when the clutch lock block (50) is separated from the first open groove (11) and the second open groove (21), the clutch state between the first shaft body (10) and the second shaft body (20) is released to be a disconnected state.

2. Clutch mechanism according to claim 1,

the position of the clutch lock block (50) in the radial direction of the first shaft body (10) is constrained to be synchronous with the clutch push plate (60);

wherein the clutch lock block (50) is disengaged from the first opening groove (11) and the second opening groove (21) by being pulled by the clutch push plate (60) which is retracted.

3. Clutch mechanism according to claim 2,

the clutch push plate (60) is provided with an arc-shaped sliding groove (600);

the clutch locking block (50) is arranged on the clutch push plate (60) through the arc-shaped sliding groove (600);

and the arc chute (600) forms a limit constraint on the clutch lock block (50) in the radial direction of the first shaft body (10) so that when the clutch lock block (50) is embedded in the first open groove (11) and the second open groove (21) which are mutually aligned in phase: the circle center of the arc-shaped sliding groove (600) coincides with the axis of the first shaft body (10) so as to allow the clutch locking block (50) to swing along with the synchronous rotation of the second shaft body (20) and the first shaft body (10).

4. Clutch mechanism according to claim 3,

the clutch lock block (50) comprises a lock block main body (51) and a hooking component (52);

wherein the lock block main body (51) is used for being embedded in the first open groove (11) and the second open groove (21) which are mutually aligned in phase and forming surface contact with the groove walls of the first open groove (11) and the second open groove (21);

the hooking member (52) is mounted to the arc chute (600), and the arc chute (600) forms a limit restraint in the radial direction for the hooking member (52);

when the center of the arc chute (600) coincides with the axis of the first shaft body (10), the hooking member (52) slides within the arc chute (600) in response to the swing of the clutch lock block (50) and maintains the limit constraint generated by the arc chute (600) in the radial direction.

5. Clutch mechanism according to claim 4,

the hooking member (52) comprises a projecting arm (521) and a peg (522);

wherein the convex arm (521) protrudes outwards from the lock block main body (51) laterally;

and the inserting column (522) is positioned at the arm end of the convex arm (521) and inserted into the arc-shaped sliding groove (600), the inserting column (522) is in sliding fit with the arc-shaped sliding groove (600), and the arc-shaped sliding groove (600) generates the limiting constraint on the inserting column (522) in the radial direction.

6. Clutch mechanism according to claim 1,

the first shaft body (10) further has a guide member (16);

the clutch lock block (50) is in sliding fit with the guide member (16);

wherein the guide member (16) is used for aligning the clutch lock block (50) with the first opening groove (11) along the moving paths of the feeding and the retreating of the clutch push plate (60).

7. Clutch mechanism according to claim 6,

the guide member (16) includes a guide plate (161) and a guide groove (162), wherein the guide plate (161) protrudes outward from an outer peripheral wall of the first shaft body (10), the guide groove (162) is provided in the guide plate (161) in a radial direction of the first shaft body (10), and the guide groove (162) communicates with the first opening groove (11);

the clutch locking block (50) is in sliding fit with the guide groove (162).

8. The clutch mechanism of claim 1, further comprising:

a third shaft body (30), wherein the third shaft body (30) is coaxially mounted with the first shaft body (10), the outer peripheral wall of the third shaft body (30) has a third opening groove (31), and the third opening groove (31) penetrates the outer peripheral wall of the third shaft body (30) in the axial direction;

a second restoring element (72), the second restoring element (72) generating a second restoring force between the first shaft body (10) and the third shaft body (30), the second restoring force for urging the phase of the third opening groove (31) to align with the first opening groove (11);

wherein the second shaft body (20) is mounted at a first end of the first shaft body (10), the third shaft body (30) is mounted at a second end of the first shaft body (10), and the first end and the second end are opposite ends of the first shaft body (10), respectively, and:

when the clutch lock block (50) is embedded in the first open groove (11) and the second open groove (21) which are aligned in phase with each other, the clutch lock block (50) is further embedded in the third open groove (31) which is aligned in phase with the first open groove (11), and the clutch lock block (50) is further brought into surface contact with a groove wall of the third open groove (31), so that a clutch state between the first shaft body (10) and the third shaft body (30) is set to a closed state;

when the clutch lock block (50) is disengaged from the first open groove (11) and the second open groove (21), the clutch lock block (50) is further disengaged from the third open groove (31), so that the clutch state between the first shaft body (10) and the third shaft body (30) is released to be the off state.

9. Clutch mechanism according to claim 8,

the first shaft body (10) is provided with a first square hole (15);

the second shaft body (20) is provided with a second square hole (25);

the third shaft body (30) is provided with a third square hole (35);

a first square rod in transmission connection with the first handle penetrates through the second square hole (25), and a second square rod in transmission connection with the second handle penetrates through the third square hole (35);

and either one of the first square bar and the second square bar is further inserted into the first square hole (15), or both the first square bar and the second square bar are retracted out of the first square hole (15).

10. Clutch mechanism according to claim 8,

when the second opening groove (21) is aligned with the first opening groove (11), the second opening groove (21) is communicated with the first opening groove (11);

when the third opening groove (31) is aligned with the first opening groove (11), the third opening groove (31) is communicated with the first opening groove (11);

clutch locking piece (50) are including locking piece main part (51), be used for the embedding first open slot (11) second open slot (21) and in the slot space that third open slot (31) intercommunication formed, and with first open slot (11) with second open slot (21) and the cell wall of third open slot (31) all forms the face contact.

11. A lock body, characterized in that it comprises a clutch mechanism according to any one of claims 1 to 10.

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