CN209976212U

CN209976212U - Electronic lock core

Info

Publication number: CN209976212U
Application number: CN201920265964.7U
Authority: CN
Inventors: 李其标; 余彦学; 李军
Original assignee: JIXIN LOCK BARRLES CO Ltd
Current assignee: JIXIN LOCK BARRLES CO Ltd
Priority date: 2019-03-01
Filing date: 2019-03-01
Publication date: 2020-01-21
Anticipated expiration: 2029-03-01

Abstract

The utility model relates to an electronic lock core, which comprises an external rotation key and a transmission motor which are arranged on an external rotation shaft, wherein a transmission cavity is arranged in the external rotation key, an output shaft of the transmission motor is connected with a worm which extends into the transmission cavity, and a nut which can be in threaded connection with the worm is sleeved on the worm; the worm is sleeved with a first return spring and a second return spring which are respectively positioned at two sides of the nut; the transmission motor drives the screw cap to move axially in the worm so that the screw cap can push the outer rotating key and the inner rotating key to be jointed and linked or separated by means of the elasticity of the first return spring or the second return spring, and the structure is simple; the first return spring or the second return spring can play a role in buffering when the outer rotating key and the inner rotating key are mechanically clamped, so that the problems of relative idle rotation and sliding of the screw between the screw cap and the worm and the like are prevented, the design is ingenious, and the service life of the electric clutch device is effectively prolonged; in addition, the first return spring and the second return spring can enable the nut to be meshed with the worm, and working stability is improved.

Description

Electronic lock core

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of locks, in particular to an electronic lock cylinder with an electric clutch device.

[ background of the invention ]

The transmission device (electric clutch device) of the existing electronic lock is mostly realized by a motor and a transmission mechanism, in order to convert the rotation action of the motor into the action of unlocking and left-right movement of unlocking, a complex transmission mechanism is needed to realize, and the time of positive and negative rotation of the motor needs to be accurately controlled, otherwise, the transmission mechanism is easily damaged; because it is difficult to precisely control the forward and reverse rotation time of the motor, if the worm drive is adopted, the rotation is easy to be over-rotated, and idle rotation is formed, and some double-spring electronic locks capable of solving the above problems appear in the prior art, such as chinese patent publication No. CN103790443B, the name of the invention is: a motor transmission device for an electronic lock adopts the technical scheme that: the positive and negative rotation motor is fixed in the installation cavity of the motor shell; one end of the rotating tooth shaft is fixedly connected with an output shaft of the forward and reverse rotating motor to realize linkage; the outer diameter of the rotary tooth sleeve is smaller than the diameter of an extending opening of the motor shell, and the rotary tooth sleeve is sleeved on the rotary tooth shaft through the through hole so that a first thread on the rotary tooth shaft is meshed with a second thread in the rotary tooth sleeve; the inner rotary tooth spring is sleeved on the rotary tooth shaft, and two ends of the inner rotary tooth spring are positioned between the forward and reverse rotation motor and the rotary tooth sleeve; the outer rotary tooth spring is sleeved on the rotary tooth sleeve, and two ends of the outer rotary tooth spring are positioned between the rotary tooth sleeve and the inner wall of the motor shell; the inner rotary tooth spring is compressed and then reacts on the rotary tooth sleeve, so that the second thread of the rotary tooth sleeve is reversely meshed with the first thread on the rotary tooth shaft, once the motor rotates reversely, the rotary tooth sleeve immediately extends outwards in a thread transmission mode and cannot idle, and similarly, when the locking mechanism is locked, the outer rotary tooth spring is compressed and then reacts on the rotary tooth sleeve, so that the second thread of the rotary tooth sleeve is reversely meshed with the first thread on the rotary tooth shaft, and once the motor rotates reversely, the rotary tooth sleeve immediately extends inwards in a thread transmission mode and cannot idle. Although this technical scheme just has solved the easy difficult problem that forms idle running of traditional worm and swivel nut through increasing two springs for the electronic lock need not too the time of accurate control motor just reversing, but it has following technical problem:

1. the first thread and the second thread are always meshed in the reverse direction, so that the rotary tooth shaft always drives the rotary tooth sleeve to rotate together no matter the motor rotates forwards or backwards; however, when the rotary tooth sleeve and other mechanisms in the lock are mechanically locked, the problems of relative idle running and thread sliding between the first thread and the second thread and the like can be caused, and the transmission device can be damaged and failed in serious cases;

2. an annular flange extends outwards from the inner end face of the rotary tooth sleeve, an outer rotary tooth spring is sleeved on the rotary tooth sleeve, and two ends of the outer rotary tooth spring are positioned between the annular flange and the inner end face of an extension opening of the motor shell; the processing technology of this structure is comparatively complicated, and changes the interior terminal surface of tooth sleeve and outwards extend and have annular flange, leads to changeing the telescopic size grow of tooth, can't satisfy small-size tool to lock's requirement.

3. The specification of this patent does not describe any practical application of the transmission device, which is complicated for a person skilled in the art, in particular, the motor housing is formed by the upper housing and the lower housing which are connected by a snap connection, and the transmission device cannot be widely used in all locks, in particular, in electronic locks using a pin lock housing or a blade lock housing.

Therefore, it is necessary to design an electronic lock cylinder with an electric clutch device to solve the above problems.

[ summary of the invention ]

In order to solve the problems, the invention provides the electronic lock cylinder which is simple in structure, long in service life, suitable for worm transmission and free of idling.

In order to achieve the purpose, the invention provides the following technical scheme:

an electronic lock core comprises a lock shell, a dial mop arranged in an open slot in the middle of the lock shell, an inner rotating shaft and an outer rotating shaft, wherein the inner rotating shaft and the outer rotating shaft are respectively arranged in the lock shell at two sides of the dial mop; the outer rotating shaft is also provided with an electric clutch device which can drive the outer rotating key to be jointed with or separated from the inner rotating key, the electric clutch device comprises a transmission motor, an output shaft of the transmission motor is connected with a worm extending into the transmission cavity, the worm is sleeved with a nut which can be in threaded connection with the worm, and the worm can drive the nut to axially move relative to the outer rotating key; the worm is further sleeved with a first return spring and a second return spring which are respectively positioned on two sides of the screw cap, the screw cap compresses the first return spring when the transmission motor drives the worm to rotate forwards or reversely, and the first return spring pushes the outer rotating key to move axially along the rotating shaft of the worm to be in joint linkage with the inner rotating key; when the transmission motor drives the worm to rotate reversely or positively, the screw cap compresses the second return spring, and the second return spring pushes the outer rotating key to move axially along the rotating shaft of the worm to be separated from the inner rotating key.

As a preferred embodiment, further defined is: the transmission cavity is internally provided with a positioning groove, the outer side of the nut is convexly provided with a positioning part matched with the positioning groove, and the positioning part slides along the positioning groove when the nut moves along the axial direction of the rotating shaft of the worm.

As a preferred embodiment, further defined is: one end of the first return spring is abutted against the cavity bottom of the transmission cavity, and the other end of the first return spring is abutted against the screw cap; and a return spring baffle through which the worm can penetrate is arranged at the cavity opening of the transmission cavity, one end of the second return spring is abutted against the return spring baffle, and the other end of the second return spring is abutted against the nut.

As a preferred embodiment, further defined is: the transmission motor is selected as a hollow cup motor.

As a preferred embodiment, further defined is: and the outer rotating shaft is provided with an anti-drilling pin positioned at the rear end of the transmission motor.

As a preferred embodiment, further defined is: a rotating groove into which the front end of the inner rotating shaft can be inserted is formed in one end, facing the inner rotating shaft, of the pulling and pulling device, a first inserting key protruding inwards is arranged in the rotating groove, and a first inserting groove matched with the first inserting key is formed in the front end of the inner rotating shaft; the front end of the inner rotating shaft is also provided with a second slot, and the side end of the inner rotating key protrudes outwards to form a second inserting key matched with the second slot; a third slot is formed in one end, facing the dial puller, of the outer rotating shaft, and a third inserting key matched with the third slot is formed in a protruding mode on the side end of the outer rotating key; the front end of the inner rotating key protrudes outwards to form a first clutch part, the front end of the outer rotating key protrudes outwards to form a second clutch part matched with the first clutch part, the middle part of the pulling and pulling part is provided with a clutch cavity for the front end of the outer rotating key to pass through, and the outer rotating key is linked with the inner rotating key after the second clutch part passes through the clutch cavity and is jointed with the first clutch part; when the nut axially moves towards the pulling and pulling along the rotating shaft of the worm, the first return spring pushes the outer rotating key to axially advance along the rotating shaft of the worm, the second clutch part penetrates through the clutch cavity and then is connected with the first clutch part, and the outer rotating key is linked with the inner rotating key; when the nut deviates from the pulling axial movement along the rotating shaft of the worm, the second return spring pushes the outer rotating key to axially retreat along the rotating shaft of the worm, the second clutch part is separated from the first clutch part, and the outer rotating key is not linked with the inner rotating key.

The beneficial effects of the invention are as follows: the invention drives the screw cap to axially move in the worm through the transmission motor, so that the screw cap can push the outer rotating key and the inner rotating key to be jointed, linked or separated by means of the elasticity of the first return spring or the second return spring, and the structure is simple. First return spring or second return spring can play the cushioning effect when the mechanical jamming appears in outer rotary key and adversion key, prevent to appear idle relatively smooth silk scheduling problem between nut and the worm, and design benefit effectively improves electric clutch's life. In addition, the first return spring and the second return spring can enable the nut to be meshed with the worm, and the working stability is improved.

[ description of the drawings ]

FIG. 1 is a schematic structural diagram of the invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a sectional view of the outer rotary key separated from the inner rotary key;

FIG. 4 is a cross-sectional view of the engagement of the outside rotating key and the inside rotating key

FIG. 5 is a schematic structural view of an electric clutch device;

FIG. 6 is an exploded schematic view of the electric clutch assembly;

FIG. 7 is a cross-sectional view of the electric clutch device;

FIG. 8 is a schematic diagram of a structure of a pull-drag;

fig. 9 is a schematic structural view of the inner rotary shaft;

FIG. 10 is a schematic view of the construction of the outer shaft;

FIG. 11 is a schematic structural view of an inside rotation key;

fig. 12 is a schematic structural view of the outward turning key.

[ detailed description ] embodiments

The invention is described in further detail below with reference to the following figures and detailed description:

as shown in fig. 1 to 12, an electronic lock core includes a lock shell 1, a dial 2 installed in an open slot at the middle of the lock shell 1, an inner rotating shaft 3 and an outer rotating shaft 4 installed in the lock shell 1 at two sides of the dial 2, respectively, and the lock shell includes but is not limited to a lock shell commonly used in an electronic lock in the prior art, such as a pin tumbler lock shell, a blade lock shell, or a gourd-shaped lock shell. The electronic lock is characterized in that the inner rotating shaft 3 is linked with the dial-up puller 2, an inner rotating key 5 linked with the inner rotating shaft 3 is arranged on the inner rotating shaft 3, an outer rotating key 6 linked with the outer rotating shaft 4 is arranged on the outer rotating shaft 4, a transmission cavity 61 is arranged in the outer rotating key 6, an electric clutch device capable of driving the outer rotating key 6 to be in joint linkage or separated with the inner rotating key 5 is further arranged in the outer rotating shaft 4, and the electric clutch device can be connected with a driving circuit of an electronic lock such as a fingerprint identifier, an NFC identifier and a password identifier of the electronic lock core in the prior art. The electric clutch device comprises a transmission motor 7, wherein the transmission motor 7 is selected as a hollow cup motor, has extremely fast response and is suitable for being applied to an electronic lock cylinder. An output shaft of the transmission motor 7 is connected with a worm 8 extending into the transmission cavity 61, a nut 9 capable of being in threaded connection with the worm 8 is sleeved on the worm 8, and the worm 8 can drive the nut 9 to axially move relative to the outward-turning key 6; the worm 8 is also sleeved with a first return spring 11 and a second return spring 12 which are respectively positioned at two sides of the nut 9; when the transmission motor 7 drives the worm 8 to rotate forwards or reversely, the screw cap 9 compresses the first return spring 11, and the first return spring 11 pushes the outer rotating key 6 to move axially along the rotating shaft of the worm to be jointed and linked with the inner rotating key 5; when the transmission motor 7 drives the worm 8 to rotate reversely or forwardly, the screw cap 9 compresses the second return spring 12, and the second return spring 12 pushes the outer rotating key 6 to move axially along the rotating shaft of the worm to be separated from the inner rotating key 5, so that the structure is simple. When the transmission motor 7 drives the worm 8 to rotate and the external rotating key 6 and the internal rotating key 5 are mechanically locked, the nut 9 axially moves along the rotating shaft of the worm and compresses the first return spring 11 or the second return spring 12; after the mechanical jamming disappears, the first return spring 11 or the second return spring 12 pushes the outer rotating key 6 to move axially along the rotating shaft of the worm, so that the outer rotating key 6 and the inner rotating key 5 are jointed, linked or separated. First return spring or second return spring can play the cushioning effect when the mechanical jamming appears in outer rotary key and adversion key, prevent to appear idle relatively smooth silk scheduling problem between nut and the worm, and design benefit effectively improves electric clutch's life. In addition, the first return spring and the second return spring can enable the nut 9 to keep meshed with the worm 8, and stability of the electric clutch device is improved.

In this embodiment, a positioning groove 62 is provided in the transmission cavity 61, a positioning portion 91 corresponding to the positioning groove 62 is convexly formed on the outer side of the nut 9, and the positioning portion 91 slides along the positioning groove 62 when the nut 9 moves along the axial direction of the rotation shaft of the worm; the cooperation of the positioning part 91 and the positioning groove 62 enables the nut 9 to only move axially along the rotation axis of the worm, but not to rotate circumferentially, thereby limiting the nut 9.

In this embodiment, one end of the first return spring 11 abuts against the bottom of the transmission cavity 61, and the other end abuts against the nut 9, and when the external rotation key is coupled and linked with the internal rotation key, the stroke of the first return spring 11 being compressed is the stroke of the nut 9 moving, and at this time, the first return spring 11 can push one side of the nut 9 to keep meshing with the worm 8. The accent of transmission chamber 61 is provided with and supplies return spring baffle 10 that worm 8 runs through, the one end of second return spring 12 with return spring baffle 10 offsets, and the other end supports on the nut 9, the stroke that second return spring 12 compressed when outer rotary key and interior rotary key separation is the stroke that nut 9 removed, and second return spring 12 can promote this moment the opposite side and the worm 8 of nut 9 keep meshing.

The anti-drilling pin 13 positioned at the rear end of the transmission motor 7 is arranged in the outer rotating shaft 4, so that a lawbreaker can be prevented from drilling the electric clutch device after the external identifier of the electronic lock is damaged, and the safety of the electronic lock core is effectively improved.

A rotating groove 21 into which the front end of the inner rotating shaft 3 can be inserted is formed in one end, facing the inner rotating shaft 3, of the pulling and pulling device 2, a first inserting key 22 protruding inwards is arranged in the rotating groove 21, a first inserting groove 31 matched with the first inserting key 22 is formed in the front end of the inner rotating shaft 3, and linkage of the pulling and pulling device 2 and the inner rotating shaft 3 can be achieved after assembly; a second slot 32 is further formed in the front end of the inner rotating shaft 3, a second inserting key 51 matched with the second slot 32 is convexly formed at the side end of the inner rotating key 5, and linkage of the inner rotating shaft 3 and the inner rotating key 5 can be achieved after assembly; a third slot 41 is formed in one end, facing the dial 2, of the outer rotating shaft 4, a third inserting key 63 matched with the third slot 41 is convexly formed at the side end of the outer rotating key 6, and linkage of the outer rotating shaft 4 and the outer rotating key 6 can be achieved after assembly; the front end of the inner rotating key 5 is convexly provided with a first clutch part 52, the front end of the outer rotating key 6 is convexly provided with a second clutch part 64 matched with the first clutch part 52, the middle part of the pull handle 2 is provided with a clutch cavity 23 for the front end of the outer rotating key 6 to pass through, and the outer rotating key 6 is linked with the inner rotating key 5 after the second clutch part 64 passes through the clutch cavity 23 and is jointed with the first clutch part 52; when the nut 9 moves axially along the rotating shaft of the worm towards the puller 2, the first return spring 11 pushes the outer rotating key 6 to advance axially along the rotating shaft of the worm, the second clutch part 64 passes through the clutch cavity 23 and then is engaged with the first clutch part 52, and the outer rotating key 6 is linked with the inner rotating key 5; when the nut 9 moves axially along the rotation axis of the worm away from the puller 2, the second return spring 12 pushes the outer rotating key 6 to retreat axially along the rotation axis of the worm, the second clutch part 64 is separated from the first clutch part 52, and the outer rotating key 6 is not linked with the inner rotating key 5.

The electric clutch device of the electronic lock cylinder can be applied to various electronic locks in the prior art, and can not be limited to the electronic lock shown in fig. 1.

Claims

1. An electronic lock core comprises a lock shell (1), a pulling mop (2) arranged in an open slot in the middle of the lock shell (1), an inner rotating shaft (3) and an outer rotating shaft (4) which are respectively arranged in the lock shell (1) and positioned at two sides of the pulling mop (2), and is characterized in that the inner rotating shaft (3) is linked with the pulling mop (2), an inner rotating key (5) linked with the inner rotating shaft (3) is arranged on the inner rotating shaft, an outer rotating key (6) linked with the outer rotating shaft (4) is arranged on the outer rotating shaft, and a transmission cavity (61) is arranged in the outer rotating key (6); an electric clutch device capable of driving the outer rotating key (6) to be in joint linkage or separation with the inner rotating key (5) is further arranged in the outer rotating shaft (4), the electric clutch device comprises a transmission motor (7), an output shaft of the transmission motor (7) is connected with a worm (8) extending into the transmission cavity (61), a nut (9) capable of being in threaded connection with the worm (8) is sleeved on the worm (8), and the worm (8) can drive the nut (9) to axially move relative to the outer rotating key (6); the worm (8) is further sleeved with a first return spring (11) and a second return spring (12) which are respectively positioned on two sides of the screw cap (9), when the transmission motor (7) drives the worm (8) to rotate forwards or backwards, the screw cap (9) compresses the first return spring (11), and the first return spring (11) pushes the outer rotating key (6) to move axially along the rotating shaft of the worm to be jointed and linked with the inner rotating key (5); when the transmission motor (7) drives the worm (8) to rotate reversely or positively, the screw cap (9) compresses the second return spring (12), and the second return spring (12) pushes the outer rotating key (6) to move axially along the rotating shaft of the worm to be separated from the inner rotating key (5).

2. The electronic lock core according to claim 1, characterized in that a positioning groove (62) is arranged in the transmission cavity (61), a positioning part (91) corresponding to the positioning groove (62) is convexly formed on the outer side of the nut (9), and the positioning part (91) slides along the positioning groove (62) when the nut (9) moves along the axial direction of the rotation shaft of the worm.

3. The electronic lock cylinder according to claim 2, characterized in that one end of the first return spring (11) abuts against the cavity bottom of the transmission cavity (61) and the other end abuts against the nut (9); the mouth of transmission chamber (61) is provided with and supplies return spring baffle (10) that worm (8) run through, the one end of second return spring (12) with return spring baffle (10) offset, the other end supports on nut (9).

4. Electronic lock cylinder according to claim 3, characterized in that the drive motor (7) is selected as a coreless motor.

5. Electronic lock cylinder according to claim 3, characterized in that an anti-drill pin (13) is arranged in the outer spindle (4) at the rear end of the drive motor (7).

6. The electronic lock core according to any one of claims 1 to 5, characterized in that one end of the dial puller (2) facing the inner rotating shaft (3) is provided with a rotating groove (21) into which the front end of the inner rotating shaft (3) can be inserted, a first inserting key (22) protruding inwards is arranged in the rotating groove (21), and the front end of the inner rotating shaft (3) is provided with a first inserting groove (31) matched with the first inserting key (22); a second slot (32) is further formed in the front end of the inner rotating shaft (3), and a second inserting key (51) matched with the second slot (32) is convexly formed at the side end of the inner rotating key (5); a third slot (41) is formed in one end, facing the poking and pulling part (2), of the outer rotating shaft (4), and a third inserting key (63) matched with the third slot (41) is convexly formed at the side end of the outer rotating key (6); the front end of the inner rotating key (5) is convexly provided with a first clutch part (52), the front end of the outer rotating key (6) is convexly provided with a second clutch part (64) matched with the first clutch part (52), the middle part of the pulling and pulling part (2) is provided with a clutch cavity (23) through which the front end of the outer rotating key (6) can pass, and the outer rotating key (6) is linked with the inner rotating key (5) after the second clutch part (64) passes through the clutch cavity (23) and is jointed with the first clutch part (52); when the nut (9) axially moves towards the pulling and pulling device (2) along the rotating shaft of the worm, the first return spring (11) pushes the outer rotating key (6) to axially advance along the rotating shaft of the worm, the second clutch part (64) penetrates through the clutch cavity (23) and then is engaged with the first clutch part (52), and the outer rotating key (6) is linked with the inner rotating key (5); when the nut (9) deviates from the pulling support (2) along the rotating shaft of the worm, the second return spring (12) pushes the outer rotating key (6) to axially retreat along the rotating shaft of the worm, the second clutch part (64) is separated from the first clutch part (52), and the outer rotating key (6) is not linked with the inner rotating key (5).