Finger-print intelligent lock and clutch mechanism thereof

Abstract

The application discloses a handle fingerprint intelligent lock and a clutch mechanism thereof, which can prevent the lock from being violently knocked and 360-degree violently rotated to open the lock, and improves the safety performance of the lock. The clutch mechanism comprises a clutch base and a clutch shaft coaxially arranged, a torsional spring, a motor, a circular arc piece and a clutch bolt. The clutch base and the clutch shaft are in rotational cooperation with opposite end surfaces, and at least one pair of first grooves and second grooves are arranged between the circumferential surfaces of the clutch base and the clutch shaft. The opposite end surfaces of the clutch base and the clutch shaft are respectively connected with a handle of the fingerprint lock and a square bar. The torsional spring is used for driving the clutch base to reset to a state in which the first grooves and the second grooves are aligned. The motor is arranged on the side of the clutch base, and an output shaft of the motor is arranged on the radial direction of the clutch base. The middle part of the circular arc piece is connected to the output end of the motor, and an arc-shaped movable groove is arranged on the circular arc piece. One end of the clutch bolt is slidingly connected with the second groove and movably embedded in the first groove, and the other end of the clutch bolt is movably connected with the movable groove.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fingerprint lock, in particular to a handle fingerprint intelligent lock and a clutch mechanism thereof. BACKGROUND

[0002] The fingerprint lock is a kind of intelligent lock, which has the characteristics of convenience, rapidity and accuracy. With the popularization of science and technology and the development of smart home, more and more people also begin to choose the fingerprint lock. In the prior art, the fingerprint recognition device of the fingerprint lock with a handle is mainly arranged on the surface of the handle and is connected with the power supply and other sensors in the lock through a signal line. Moreover, the fingerprint lock is usually designed with a coaxial clutch base and a clutch shaft, both of which are connected with the handle and the square bar of the fingerprint lock, and a clutch mechanism is designed between the clutch base and the clutch shaft. The clutch mechanism can realize or release the synchronous rotation between the clutch base and the clutch shaft. When the clutch base and the clutch shaft rotate synchronously, the lock can be opened by swinging the handle.

[0003] At present, the common clutch mechanism in the fingerprint lock is a structure of solenoid valve cooperating with spring and latch. After the user's fingerprint recognition operation is successful, the fingerprint lock supplies power to the solenoid valve to make it work. When the solenoid valve is powered on (works), the latch is attracted back and the spring is compressed. After the latch is attracted back, it avoids the lock bolt for limiting the rotation of the handle. Thus, when the handle is rotated and the lock bolt is unlocked, the lock bolt no longer produces limitation, so that the lock can be successfully opened. When the solenoid valve is powered off (does not work), the spring releases the elastic potential energy and pushes out the latch to achieve locking. This type of clutch mechanism has disadvantages: the latch is relatively thin and has insufficient strength, and the latch is driven by the spring, which may cause the latch to move out of position due to spring aging. Moreover, when a person with bad intentions knocks the lock in the direction of the compressed spring, the latch may move out of the position for limiting the lock bolt, thereby achieving illegal unlocking. Therefore, the fingerprint lock installed with the above-mentioned type of clutch mechanism has the risk of violent knocking and unlocking, and has poor safety performance. SUMMARY

[0004] The present application aims to provide a handle fingerprint intelligent lock and a clutch mechanism thereof, which can solve the problems in the prior art, prevent the lock from being violently knocked and 360° violently rotated to open the lock, and improve the safety performance of the lock.

[0005] To achieve the above-mentioned purpose, one of the solutions of the present application is:

[0006] The clutch mechanism comprises a clutch base coaxially arranged with a clutch rotating shaft, a torsion spring, a motor, a circular arc member and a clutch bolt; the opposite end surfaces of the clutch base and the clutch rotating shaft are rotationally matched, and at least one pair of first grooves and second grooves are arranged between the peripheral surfaces of the clutch base and the clutch rotating shaft; the opposite end surfaces of the clutch base and the clutch rotating shaft are respectively connected with a handle and a square rod of a fingerprint lock; the torsion spring is used to drive the clutch base to reset to a state in which the first grooves and the second grooves are aligned; the motor is arranged on a side of the clutch base, and an output shaft of the motor is arranged in a radial direction of the clutch base; the circular arc member is connected to an output end of the motor, and an arc-shaped movable groove is arranged on the circular arc member; one end of the clutch bolt is slidingly matched in the second groove and movably embedded in the first groove, and the other end of the clutch bolt is movably matched in the movable groove.

[0007] One end of the clutch bolt close to the circular arc member is provided with a hook portion which is hooked in the movable groove; the motor is a micro reciprocating telescopic motor or a worm gear motor.

[0008] The first grooves are symmetrically arranged on two sides of the clutch base, and the second grooves are symmetrically arranged on two sides of the clutch rotating shaft.

[0009] The clutch mechanism further comprises a clutch cover, a sliding member and a first spring; a wire slot is arranged between two ends of the clutch base and is used to accommodate a signal line of the fingerprint lock; an end of the clutch rotating shaft away from the clutch base is rotationally penetrated through the clutch cover; the sliding member is slidingly matched with a peripheral surface of the clutch cover and movably embedded in a first groove which is not matched with the clutch bolt, and the sliding member is provided with a push piece which is easy to push the sliding member; the second spring is used to drive the sliding member to reset to a direction of the peripheral surface of the clutch base, so that an end of the sliding member is embedded in the first groove which is not matched with the clutch bolt.

[0010] Preferably, the clutch mechanism further comprises a gland; a sliding interface is arranged on a peripheral surface of the clutch cover and is arranged in a radial direction of the clutch cover; the sliding member is slidingly matched in the sliding interface; the gland is fixedly matched at an outer end of the sliding interface and is used to prevent the sliding member from being separated from the sliding interface; two ends of the second spring are respectively abutted with the push piece and the gland.

[0011] Alternatively, the clutch mechanism further comprises a second spring; a wire slot is communicated between the two ends of the clutch base for assembling the signal line of the fingerprint lock; a convex column and an arc-shaped slot are respectively arranged on the end face of the clutch base opposite to the clutch shaft; the arc-shaped slot has two end walls; the clutch shaft is movably fitted on the end face of the clutch base in the axial direction, so that the convex column is inserted into or separated from the arc-shaped slot; the convex column is movably fitted in the arc-shaped slot with the rotation of the clutch base, and movably abuts against the end wall in the corresponding direction when the clutch base rotates relative to the clutch shaft in the locking direction; the second spring acts on the end face of the clutch shaft away from the clutch base, for driving the clutch shaft to move towards the clutch base.

[0012] Preferably, a convex part is arranged between the two end walls of the arc-shaped slot, and the two sides of the convex part have matching inclined surfaces.

[0013] The second solution of the present application is:

[0014] A handle fingerprint intelligent lock comprises a clutch mechanism, and a shell, a handle and a square rod; the clutch mechanism is installed in the shell, and the clutch base is connected with the handle and the clutch shaft is connected with the square rod.

[0015] The shell comprises a shell body and a rear cover; the shell body is provided with a mounting cavity, the rear cover covers the opening of the mounting cavity, the shell body is provided with a first movable hole through which the clutch base passes, and the rear cover is provided with a second movable hole through which the clutch shaft passes.

[0016] Preferably, the bottom of the mounting cavity is provided with a rotation-stopping convex block in the shape of a circular arc; the end face of the clutch base facing the bottom of the mounting cavity is provided with a limiting convex block, and a limiting screw is threadedly connected to the clutch base, the limiting screw and the limiting convex block are arranged on opposite sides of the clutch base, and the limiting screw movably abuts against the end of the rotation-stopping convex block with the rotation of the clutch base.

[0017] After the above technical solution is adopted, the present application has the following technical effects:

[0018] ①The clutch base and the clutch shaft coaxially arranged as the transmission structure between the handle and the square rod are rotationally connected and realize clutching through the cooperation of the motor, the circular arc piece and the clutch pin; when the clutch pin is simultaneously inserted into the first groove and the second groove, the clutch base and the clutch shaft realize synchronous rotation; when the clutch pin is separated from the first groove, the clutch base idles and cannot drive the clutch shaft to rotate;

[0019] The motor can only drive the arc-shaped member to move in the powered state, the position and state of the clutch pin is stable when the motor is not working, the position of the clutch pin will not be changed even if the lock is hit by a great force, the purpose of preventing violent unlocking is achieved, and the safety performance of the fingerprint lock is improved;

[0020] The shape of the arc-shaped member can not interfere with the rotation of the clutch base when it is close to the clutch base. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a perspective view of the first embodiment of the present application;

[0022] Figure 2 It is an exploded view of the first embodiment of the present application;

[0023] Figure 3 It is a perspective view of the clutch cover of the first embodiment of the present application;

[0024] Figure 4 It is a perspective view of the second embodiment of the present application;

[0025] Figure 5 It is an exploded view of the second embodiment of the present application Figure 1 ;

[0026] Figure 6 It is an exploded view of the second embodiment of the present application Figure 2 ;

[0027] Figure 7 It is a perspective view of the third embodiment of the present application Figure 1 ;

[0028] Figure 8 It is a perspective view of the third embodiment of the present application Figure 2 ;

[0029] Figure 9 It is a back view of the third embodiment of the present application;

[0030] Figure 10 It is an exploded view of the third embodiment of the present application;

[0031] Figure 11 It is a partial structure sectional view (in A-A direction) of the third embodiment of the present application Figure 9 ;

[0032] Figure 12 It is a partial structure sectional view (in B-B direction) of the third embodiment of the present application Figure 9 ;

[0033] BRIEF DESCRIPTION OF DRAWINGS

[0034] 1----clutch base; 11---first groove; 12---wiring slot; 13---boss; 14---shaft hole; 15---connecting part; 16---limiting block; 17---column;

[0035] 2----clutch shaft; 21---second groove; 22---spline hole; 23---convex ring; 24---arc slot; 241--end wall; 242--projection; 243--fitting slope; 25---circular slot; 26---second through hole; 27---second limiting column; 28---foolproof column;

[0036] 3----torsional spring;

[0037] 4----motor;

[0038] 5----circular arc piece; 51---movable slot;

[0039] 6----clutch bolt; 61---hook;

[0040] 7----housing; 71---shell; 711--mounting cavity; 712--first movable hole; 713--rotation stopping block; 72---rear cover; 721--second movable hole; 722--third through hole; 723--arc-shaped hole; 724--foolproof hole;

[0041] 8----handle;

[0042] 9----square rod;

[0043] 10---clutch cover; 101--sliding interface; 1011- limiting flange; 102--circular hole; 103--guide notch; 104--first through hole;

[0044] 20---slider; 201--paddle; 202--anti-dropping flange;

[0045] 30---first spring;

[0046] 40---gland; 401--first limiting column;

[0047] 50---fixing screw;

[0048] 60---limiting screw;

[0049] 70---second spring;

[0050] 80---anti-friction sheet;

[0051] 90---bearing;

[0052] 100--fingerprint recognition device. DETAILED DESCRIPTION

[0053] In order to further explain the technical solutions of the present application, the present application will be described in detail below through specific examples.

[0054] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0055] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope to be protected by the present application, but only represents selected embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making creative efforts fall within the scope to be protected by the present application.

[0056] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0057] In the description of the embodiments of the present application, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, or the orientation or positional relationship commonly understood by a person skilled in the art, which is only for the purpose of simplifying the description of the embodiments of the present application, and is not intended to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0058] In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0059] In the description of the embodiments of the present application, it should also be noted that unless specifically defined and limited otherwise, the terms "set", "install", "connect", "connected" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, or electrically connected or can communicate with each other; can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0060] In the present application, unless otherwise specifically defined and limited, "on" or "under" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "above" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. "Below", "below" and "below" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0061] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and arrangements of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and / or arrangements discussed.

[0062] In addition, the present application provides various specific examples of processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0063] The present application discloses a kind of clutch mechanism, refer to Figures 1 to 6 As shown in the figure, the clutch mechanism includes coaxially arranged clutch base 1 and clutch rotating shaft 2, and torsion spring 3, motor 4, circular arc piece 5 and clutch bolt 6;

[0064] The opposite end surfaces of clutch base 1 and clutch rotating shaft 2 are rotationally matched, and at least a pair of first recess 11 and second recess 21 are arranged between the peripheral surfaces of the two; The opposite end surfaces of clutch base 1 and clutch rotating shaft 6 are respectively connected to the handle of fingerprint lock and square bar;

[0065] Torsion spring 3 acts on the fingerprint lock and clutch base 1, so that the clutch base 1 is reset to the state that the first recess 11 and the second recess 21 are aligned;

[0066] The motor 4 is arranged at the side of the clutch base 1, and the output shaft of the motor 4 is arranged in the radial direction of the clutch base 1;

[0067] The middle part of the arc-shaped member 5 is connected to the output end of the motor 4, and the arc-shaped movable groove 51 is arranged on the arc-shaped member 5.

[0068] One end of the clutch bolt 6 is slidingly connected in the second groove 21 and movably embedded in the first groove 11, and the other end of the clutch bolt 6 is movably connected in the movable groove 51. When the clutch bolt 6 is embedded in the first groove 11, the rotation of the clutch base 1 can drive the other end of the clutch bolt 6 to slide in the movable groove 51.

[0069] After the above technical scheme is adopted, the clutch base 1 and the clutch rotating shaft 2 arranged coaxially are used as the transmission structure between the handle and the square rod, the clutch base 1 and the clutch rotating shaft 2 are rotationally connected and realize the clutching through the cooperation of the motor 4, the arc-shaped member 5 and the clutch bolt 6. When the clutch bolt 6 is embedded in the first groove 11 and the second groove 21 at the same time, the clutch base 1 and the clutch rotating shaft 6 realize synchronous rotation. When the clutch bolt 6 is disengaged from the first groove 11, the clutch base 1 idles and cannot drive the clutch rotating shaft 6 to rotate. The motor 4 can only drive the arc-shaped member 5 to move in the state of being powered on. When the motor 4 is not working, the position and state of the clutch bolt 6 are stable. Even if the lock is hit by a large force, the position of the clutch bolt 6 will not be changed, so that the purpose of preventing violent unlocking is achieved, and the safety performance of the fingerprint lock is improved. The shape of the arc-shaped member 5 can not interfere with the rotation of the clutch base 1 when the arc-shaped member 5 is close to the clutch base 1.

[0070] The end of the clutch bolt 6 close to the arc-shaped member 5 is provided with a hook part 61, and the hook part 61 is hooked in the movable groove 51 to prevent the clutch bolt 6 from falling off the arc-shaped member 5 when the arc-shaped member 5 moves radially under the driving of the motor 4.

[0071] The motor 4 is a micro reciprocating motor or a worm gear motor, which can output linear reciprocating motion to meet the use requirement of driving the arc-shaped member 5.

[0072] The first grooves 11 are symmetrically arranged on the two sides of the clutch base 1, and the second grooves 21 are symmetrically arranged on the two sides of the clutch rotating shaft 2, so that the clutch base 1 can be reversed with the handle of the fingerprint lock, and the outer shell of the fingerprint lock does not need to be disassembled during the reversing operation.

[0073] The application further discloses a handle fingerprint intelligent lock, as shown in Figures 7 to 12 The handle fingerprint intelligent lock comprises the clutch mechanism, an outer shell 7, a handle 8 and a square rod 9. The clutch mechanism is installed in the outer shell 7, and the clutch base 1 is connected with the handle 8 and the clutch rotating shaft 2 is connected with the square rod 9.

[0074] Since the handle fingerprint intelligent lock contains the clutch mechanism of the application, it also has the technical effects brought by the clutch mechanism, which will not be repeated here.

[0075] Referring to Figures 1 to 3 The first embodiment is one of the implementation manners of the clutch mechanism.

[0076] The existing fingerprint lock needs to disassemble the lock, and reassemble the handle and the signal line of the fingerprint lock in the process of reversing the handle, which is relatively troublesome. The first embodiment solves this problem on the basis of the clutch mechanism. In the first embodiment, it further includes a clutch cover 10, a sliding piece 20 and a first spring 30; a wire slot 12 is communicated between the two ends of the clutch base 1, which is used to assemble the signal line of the fingerprint lock; the clutch shaft 2 is rotatably penetrated through the clutch cover 10 at the end away from the clutch base 1; the sliding piece 20 is slidingly matched with the peripheral surface of the clutch cover 10 and movably embedded in the first groove 11 which is not matched with the clutch bolt 6, so that the clutch base 1 and the clutch cover 10 are circumferentially limited and can be synchronously rotated, and the sliding piece 20 is provided with a push piece 201 which is easy to push the sliding piece 20; the first spring 30 is used to drive the sliding piece 20 to reset to the direction of the peripheral surface of the clutch base 1, so that the end of the sliding piece 20 is embedded in the first groove 11. In this paragraph, by arranging the clutch shaft 2 between the clutch base 1 and the clutch cover 10, the assembly of the clutch shaft 2 can be realized and the looseness can be prevented; the signal line of the fingerprint lock can be matched in the wire slot 12, so that the signal line is arranged along the axial direction of the clutch base 1 and synchronously rotates with the clutch base 1, and the signal line is not easy to be entangled when the handle of the fingerprint lock is reversed, which protects the signal line; through the movable matching between the sliding piece 20 slidingly matched on the clutch cover 10 and the first groove 11 of the clutch base 1, and the driving of the sliding piece 20 by the first spring 30, the clutch base 1 and the clutch cover 10 are kept synchronous rotation in normal state, and the circumferential limitation between them is removed by the user moving the sliding piece 20 through the push piece 201, and then the clutch base 1 can be rotated to realize the purpose of reversing the handle of the lock, without the user disassembling the lock, which is simple to operate; at the same time, the sliding piece 20 and the clutch bolt 6 share the first groove 11 of the clutch base 1, which is more simple in structure design.

[0077] In the specific implementation of the first embodiment, one end surface of the clutch base 1 is provided with a boss 13, the first groove 11 is arranged on the peripheral surface of the boss 13, and the end surface of the boss 13 is provided with a shaft hole 14; the clutch shaft 2 is provided with a central shaft facing the end surface of the clutch base 1, which is rotatably matched in the shaft hole 14 to realize the rotational matching between the clutch base 1 and the clutch shaft 2.

[0078] Further, the other end surface of the clutch base 1 is provided with a connecting portion 15 for assembling the handle 8; the wire slot 12 extends from the end surface of the connecting portion 15 to the end surface of the boss 13; the end surface of the clutch rotating shaft 2 away from the clutch base 1 is provided with a spline hole 22 for assembling the lever 9.

[0079] In the implementation of the first embodiment, the grommet 40 is further included; the peripheral surface of the clutch cover 10 is provided with a sliding interface 101 arranged along the radial direction of the clutch cover 10, the sliding piece 20 is slidingly fitted in the sliding interface 101; the grommet 40 is fixedly fitted at the outer end of the sliding interface 101, for preventing the sliding piece 20 from being separated from the sliding interface 101; the two ends of the first spring 30 abut against the push piece 201 and the grommet 40 respectively. The grommet 40 can be locked on the clutch cover 10 by the fixing screw 50.

[0080] Further, the two side walls of the sliding interface 101 are both provided with a limiting flange 1011; the two sides of the sliding piece 20 are both provided with an anti-separation flange 202; the anti-separation flange 202 is lapped on the limiting flange 1011; the grommet 40 is fitted above the sliding piece 20. The grommet 40 and the limiting flange 1011 are fitted above and below, and the end of the grommet 40 is limited, so as to prevent the sliding piece 20 from falling out of the sliding interface 101.

[0081] In the implementation of the first embodiment, the clutch cover 10 is provided with a circular hole 102 for the clutch rotating shaft 2 to rotate through; the peripheral surface of the end of the clutch rotating shaft 2 facing the clutch base 1 is protruded to form a flange 23 with a larger diameter than the circular hole 102, so that the clutch rotating shaft 2 will not fall out of the circular hole 102; the peripheral surface of the flange 23 is symmetrically provided with the second groove 21.

[0082] In the implementation of the first embodiment, the peripheral surface of the clutch cover 10 is provided with a guide notch 103 for the movable fitting of the clutch bolt 6, the guide notch 103 is arranged along the radial direction of the clutch cover 10, and plays a guiding role in the movement of the clutch bolt 6.

[0083] In the implementation of the first embodiment, the surface of the grommet 40 facing the shell 7 is provided with a first limiting column 401, which can be fitted with the arc-shaped hole 723 of the shell 7, for limiting the rotation angle of the grommet 40 and the clutch cover 10. Since the sliding piece 20 makes the clutch cover 10 rotate synchronously with the clutch base 1 in normal state, the fitting of the first limiting column 401 and the arc-shaped hole 723 limits the rotation angle of the clutch base 1. Even if the clutch base 1 produces a larger rotation angle under the action of external force (generally in the case of forced unlocking), the clutch cover 10 will no longer rotate synchronously with the clutch base 1 due to the fracture of the sliding piece 20 prior to the first limiting column 401, so as to achieve the purpose of preventing 360° forced unlocking.

[0084] In the implementation of the first embodiment, the housing 7 is provided with a rotation-stopping protrusion 713 in the form of a circular arc; the end face of the clutch base 1 facing the housing 7 is provided with a limiting protrusion 16, and the clutch base 1 is threadedly connected with a limiting screw 60, which is arranged on opposite sides of the clutch base 1 and abuts against the end of the rotation-stopping protrusion 713 when the clutch base 1 is rotated. Normally, the lock cylinder of the fingerprint lock is configured to have the functions of pulling down to unlock and lifting up to lock, and the corresponding operations are as follows: the unlocking function can be realized by pressing down the handle 8, and the locking function can be realized by lifting up the handle 8. Therefore, by arranging the rotation-stopping protrusion 713, the limiting protrusion 16 and the limiting screw 60, the rotation angle of the clutch base 1 and the handle 8 can be limited, and when the limiting protrusion 16 or the limiting screw 60 abuts against the end of the rotation-stopping protrusion 713, the rotation is completed, thereby avoiding invalid operation caused by the user's continuous force. In addition, since the limiting screw 60 can be screwed out relative to the clutch base 1, the handle reversing function of the lock can be realized without affecting the handle reversing function when the handle is reversed, and after the reversing is completed, the limiting screw 60 can be screwed back.

[0085] Further, the clutch cover 10 is provided with a first perforation 104 to facilitate the operation of disassembling and assembling the limiting screw 60.

[0086] Referring to Figures 4 to 6 the second embodiment of the present application, which is another implementation of the clutch mechanism.

[0087] The second embodiment is the same as the first embodiment and also solves the problem of reversing the lock. In the second embodiment, a second spring 70 is further included; a wiring slot 12 is communicated between the two ends of the clutch base 1 for assembling the signal line of the fingerprint lock; the end face of the clutch base 1 opposite to the clutch shaft 2 is respectively provided with a convex column 17 and an arc-shaped slot 24; the arc-shaped slot 24 has two end walls 241; the clutch shaft 2 is movably fitted on the end face of the clutch base 1 in the axial direction, so that the convex column 17 is inserted into or separated from the arc-shaped slot 24; the convex column 17 is movably fitted in the arc-shaped slot 24 with the rotation of the clutch base 1, and abuts against the end wall 241 in the corresponding direction when the clutch base 1 rotates relative to the clutch shaft 2 in the locking direction, so that the clutch base 1 can drive the clutch shaft 2 to rotate when it rotates in the locking direction, thereby realizing the "up-locking" function; the second spring 70 acts on the end face of the clutch shaft 2 away from the clutch base 1, for driving the clutch shaft 2 to move towards the clutch base 1, thereby keeping the convex column 17 fitted in the arc-shaped slot 24 in the assembled state. In this paragraph, the "up-locking" function of the lock is realized by setting the convex column 17 and the arc-shaped slot 24 on the opposite faces of the clutch base 1 and the clutch shaft 2, and by the cooperation of the convex column 17 and the end wall 241 of the arc-shaped slot 24, which ensures that the original function of the fingerprint lock is not affected after the design of the reversing structure, and the fingerprint lock can still be used normally; at the same time, during the installation of the fingerprint lock, the clutch shaft 2 is axially moved relative to the clutch base 1 by pulling, so that the convex column 17 is separated from the arc-shaped slot 24, and the clutch base 1 is rotated by 180° by the handle 8, thereby completing the reversing; then the clutch shaft 2 is reset under the action of the second spring 70, so that the convex column 17 continues to be fitted in the arc-shaped slot 24, and the user does not need to disassemble the shell 7 during the whole reversing operation, which is simple and efficient; the signal line of the fingerprint lock can be fitted in the wiring slot 12, so that the signal line is arranged along the axial direction of the clutch base 1 and rotates synchronously with the clutch base 1, and is not easily entangled during the reversing of the handle, thereby protecting the signal line.

[0088] In the specific implementation of the second embodiment, the opposite end faces of the clutch base 1 and the clutch shaft 2 are respectively provided with a convex column 13 and a circular slot 25, the end face of the convex column 13 is rotatably fitted in the circular slot 25; the convex column 17 is arranged on the end face of the convex column 13, and the arc-shaped slot 24 is arranged at the bottom of the circular slot 25. The cooperation of the convex column 13 and the circular slot 25 makes the rotation cooperation of the clutch base 1 and the clutch shaft 2 more stable.

[0089] Further, the convex column 13 is fixedly connected with an anti-friction sheet 80, which is disc-shaped and rotatably fitted in the circular slot 25, thereby reducing the friction between the clutch base 1 and the clutch shaft 2. The anti-friction sheet 80 can be made of ceramic material, stainless steel or other materials with low friction coefficient, and is locked on the convex column 13 by screws.

[0090] Meanwhile, the end face of the clutch base 1 opposite to the clutch rotating shaft 2 is provided with a connecting part 15 for assembling the handle 8; the wiring groove 12 extends from the end face of the connecting part 15 to the end face of the boss 13; the shaft part end face of the clutch rotating shaft 2 opposite to the clutch base 1 is provided with a spline hole 22 for assembling the lever 9.

[0091] In the implementation of the second embodiment, the arc-shaped groove 24 is provided with a protruding part 242 between the two end walls 241, and the protruding part 242 has a matching inclined surface 243 on both sides. By providing the protruding part 242 with the matching inclined surface 243 on the arc-shaped groove 24, when the clutch base 1 rotates relative to the clutch rotating shaft 2 in the locking direction, the protruding column 17 will abut on the corresponding matching inclined surface 243 of the protruding part 242, preventing the continuous rotation of the clutch base 1. Once someone forcibly continues to rotate the handle 8, the matching inclined surface 243 will cause the protruding column 17 to be extruded and deformed to be separated from the arc-shaped groove 24, or even cause the protruding column 17 to be broken, so that the clutch base 1 and the clutch rotating shaft 2 lose the transmission function of the protruding column 17 and the arc-shaped groove 24, achieving the purpose of preventing 360° violent unlocking. The arc length of the arc-shaped groove 24 can be a semicircle.

[0092] Referring to Figures 7 to 12 Fig. 3 shows a third embodiment of the present application, which is one of the implementation modes of the handle fingerprint intelligent lock.

[0093] The third embodiment includes the clutch mechanism of the second embodiment, that is, the second embodiment is installed in the third embodiment.

[0094] In the third embodiment, the shell 7 includes a housing 71 and a rear cover 72; the housing 71 is provided with a mounting cavity 711, and the rear cover 72 covers the opening of the mounting cavity 711 to fix the clutch mechanism in the mounting cavity 711; the housing 71 is provided with a first movable hole 712 for the clutch base 1 to pass through, and the rear cover 72 is provided with a second movable hole 721 for the clutch rotating shaft 2 to pass through, which plays a guiding role in the axial movement of the clutch rotating shaft 2.

[0095] In the third embodiment, the bottom of the mounting cavity 711 is provided with a rotation stopping protrusion 713 in the shape of a circular arc. The end surface of the clutch base 1 facing the bottom of the mounting cavity 711 is provided with a limiting protrusion 16, and the clutch base 1 is threadedly connected with a limiting screw 60. The limiting protrusion 16 and the limiting screw 60 are arranged on opposite sides of the clutch base 1 and abut against the end of the rotation stopping protrusion 713 when the clutch base 1 rotates. Normally, the lock cylinder of the fingerprint lock is configured to be unlocked by pulling down and locked by pulling up, and the corresponding operation is as follows: the unlocking function can be realized by pressing down the handle 8, and the locking function can be realized by pulling up the handle 8. After the rotation stopping protrusion 713, the limiting protrusion 16 and the limiting screw 60 are arranged, the rotation angle of the clutch base 1 and the handle 8 can be limited. When the limiting protrusion 16 or the limiting screw 60 abuts against the end of the rotation stopping protrusion 713, the rotation is in place, avoiding invalid operation caused by the user's continuous force. At the same time, the rotation stopping function of the clutch base 1 and the handle 8 can prevent violent unlocking by rotating the handle 360°, thereby improving the safety performance of the lock. In addition, since the limiting screw 60 can be screwed out relative to the clutch base 1, it can be directly screwed out when the handle is reversed, without affecting the realization of the handle reversing function of the lock. After reversing, the limiting screw 60 is screwed back.

[0096] Further, the clutch shaft 2 is symmetrically provided with two second through holes 26 on both sides for the limiting screw 60 to pass through, and the second movable hole 721 is symmetrically provided with a third through hole 722 on both sides for the limiting screw 60 to pass through, to facilitate the operation of disassembling the limiting screw 60.

[0097] At the same time, the surface of the clutch shaft 2 facing the rear cover 72 is provided with a second limiting column 27, and the rear cover 72 is provided with an arc-shaped hole 723 for the second limiting column 27 to movably cooperate. The second limiting column 27 movably cooperates between the two ends of the arc-shaped hole 723 with the rotation of the clutch shaft 2, limiting the rotation angle of the clutch shaft 2, thereby limiting the rotation angle of the clutch base 1. Even if the clutch base 1 produces a larger rotation angle under the action of external force (generally in the case of violent unlocking), the second limiting column 27 and the arc-shaped hole 723 will limit the rotation angle of the clutch shaft 2, so that the protrusion 17 is extruded and deformed by the protruding part 242 of the clutch shaft 2, resulting in the clutch base 1 and the clutch shaft 2 no longer rotating synchronously, achieving the purpose of preventing 360° violent unlocking.

[0098] Furthermore, the rear cover 72 is provided with a plurality of anti-stupid holes 724, and the surface of the clutch shaft 2 facing the rear cover 72 is provided with a plurality of anti-stupid columns 28. When the clutch shaft 2 moves axially in the direction away from the clutch base 1, the anti-stupid columns 28 are inserted into the corresponding anti-stupid holes 724 one by one, realizing the positioning and rotation-stopping function of the clutch shaft 2, preventing the clutch shaft 2 from rotating during the process of rotating the handle 8 to drive the clutch base 1 to rotate, and ensuring that the position of the clutch base 1 is still adapted to the clutch shaft 2 after the direction is changed.

[0099] Finally, the circumferential surface of the clutch base 1 and the first movable hole 712 are provided with a bearing 90 to realize smooth rotation of the clutch base 1.

[0100] In the third embodiment, the handle 8 is provided with a fingerprint recognition device 100.

[0101] The above embodiments and drawings do not limit the product form and style of the present application, and any appropriate changes or modifications made by any ordinary skilled person in the art shall be considered as not departing from the scope of the patent of the present application.

Claims

1. A clutch mechanism, characterized in that: It includes a clutch base and a clutch shaft that are coaxially arranged, as well as a torsion spring, a motor, an arc part and a clutch latch; The clutch base and the clutch shaft are rotatably matched with each other at opposite end surfaces, and at least one pair of first grooves and second grooves are provided between the circumferences of the two. The clutch base and the clutch shaft have opposite end surfaces connected to the handle and the square rod of the fingerprint lock respectively. The torsion spring is used to drive the clutch base to return to a state where the first groove is aligned with the second groove; The motor is arranged on the side of the clutch base, and the output shaft thereof is arranged in the radial direction of the clutch base; The middle portion of the arc member is connected to the output end of the motor and is provided with an arc-shaped movable groove; One end of the clutch latch is slidably engaged in the second groove and movably embedded in the first groove, and the other end is movably engaged in the movable groove; The clutch latch is provided with a hook portion at one end close to the arc member, and the hook portion is hooked in the movable groove; the motor is a micro reciprocating telescopic motor or a worm gear motor; The first grooves are symmetrically provided on both sides of the clutch base, and the second grooves are symmetrically provided on both sides of the clutch shaft; It also includes a clutch cover, a sliding member and a first spring; a wiring groove is connected between the two ends of the clutch base for assembling the signal line of the fingerprint lock; the end of the clutch shaft facing away from the clutch base rotates through the clutch cover; the sliding member is slidably engaged with the circumference of the clutch cover and movably embedded in the first groove that does not cooperate with the clutch latch, and the sliding member is provided with a paddle that easily pushes the sliding member; the first spring is used to drive the sliding member to reset toward the circumference of the clutch base so that the end of the sliding member is embedded in the first groove that does not cooperate with the clutch latch.

2. The clutch mechanism according to claim 1, wherein: It also includes a pressure cover; the circumferential surface of the clutch cover is provided with a sliding interface arranged along the radial direction of the clutch cover, and the sliding part is slidably fitted in the sliding interface; the pressure cover is fixedly fitted at the outer end of the sliding interface to prevent the sliding part from detaching from the sliding interface; the two ends of the first spring respectively abut the paddle and the pressure cover.

3. The clutch mechanism according to claim 1, wherein: It also includes a second spring; a wiring groove is connected between the two ends of the clutch base for assembling the signal line of the fingerprint lock; a boss and an arc-shaped groove are respectively provided on the end surface of the clutch base opposite to the clutch shaft; the arc-shaped groove has two end walls; the clutch shaft is axially movably engaged with the end surface of the clutch base so that the boss is inserted into or disengaged from the arc-shaped groove; the boss is engaged in the arc-shaped groove as the clutch base rotates, and when the clutch base rotates in the locking direction relative to the clutch shaft, it movably abuts the end wall in the corresponding direction; the second spring acts on the end surface of the clutch shaft facing away from the clutch base, for driving the clutch shaft to move in the direction of the clutch base.

4. The clutch mechanism according to claim 3, wherein: A protrusion is provided between the two end walls of the arc-shaped groove, and both sides of the protrusion have matching inclined surfaces.

5. A handle fingerprint smart lock, comprising the clutch mechanism according to any one of claims 1 to 4, characterized in that: It also includes a shell, a handle and a square rod; the clutch mechanism is installed in the shell, and the clutch base is connected to the handle, and the clutch shaft is connected to the square rod.

6. The handle fingerprint smart lock according to claim 5, characterized in that: The shell includes a shell and a back cover; the shell is provided with a mounting cavity, the back cover covers the opening of the mounting cavity, and the shell is provided with a first movable hole for the clutch base to pass through, and the back cover is provided with a second movable hole for the clutch shaft to pass through.

7. The handle fingerprint smart lock according to claim 6, characterized in that: A stop-rotation protrusion is provided at the bottom of the mounting cavity, and the stop-rotation protrusion is in an arc shape; a limiting protrusion is provided on the end surface of the clutch base facing the bottom of the mounting cavity, and a limiting screw is threadedly connected to the clutch base, and the limiting screw and the limiting protrusion are provided on opposite sides of the clutch base, and abut the end of the stop-rotation protrusion as the clutch base rotates.

Images