CN219451786U - Three-stage gear transmission device of lock cylinder and electric lock body - Google Patents

Abstract

The utility model provides a three-stage gear transmission device of a lock cylinder and an electric lock body, wherein the three-stage gear transmission device comprises a shell, and a lock cylinder gear, a first-stage tooth piece, a second-stage duplex tooth and a third-stage tooth piece which are positioned in the shell, wherein the second-stage duplex tooth comprises a large tooth piece and a small tooth piece, the first-stage tooth piece is meshed with the small tooth piece, the large tooth piece is meshed with the third-stage tooth piece, and the third-stage tooth piece is meshed with the lock cylinder gear. The beneficial effects of the utility model are as follows: in the utility model, the lock tongue opening and closing structure of the lock body driven by the key to rotate the lock core adopts a three-stage gear transmission technical scheme, and the transmission structure is simple and has higher stability.

Description

Three-stage gear transmission device of lock cylinder and electric lock body

Technical Field

The utility model relates to the technical field of door locks, in particular to a three-stage gear transmission device of a lock cylinder and an electric lock body.

Background

In the existing electric door lock, the lock tongue opening and closing structure of the lock body driven by the key to rotate the lock core is completed only by 4-stage or 5-stage gear transmission.

Adopts 4-level or 5-level gear transmission, thereby causing the technical defects of complex transmission structure and low stability.

Disclosure of Invention

In order to solve the technical problems of complex transmission structure and low stability caused by 4-level or 5-level gear transmission in the prior art, the utility model provides a three-level gear transmission device of a lock cylinder, which comprises a shell, a lock cylinder gear, a first-level tooth piece, a second-level duplex tooth and a third-level tooth piece, wherein the lock cylinder gear, the first-level tooth piece, the second-level duplex tooth piece and the third-level tooth piece are positioned in the shell, the second-level duplex tooth comprises a large tooth piece and a small tooth piece, the first-level tooth piece is meshed with the small tooth piece, the large tooth piece is meshed with the third-level tooth piece, and the third-level tooth piece is meshed with the lock cylinder gear.

As a further improvement of the utility model, the third stage tooth plates are two.

As a further improvement of the utility model, the shell comprises a lock shell and a lock cover which is installed together with the lock shell, the three-stage gear transmission device also comprises a gear bracket, the gear bracket is installed in the shell, the gear bracket is provided with a containing groove, the lock cylinder gear is installed in the containing groove, and the lock cylinder gear can do rotary motion in the containing groove; the gear bracket is provided with a mounting shaft and a fifth protruding shaft, the third-stage tooth plate is mounted on the mounting shaft, and the third-stage tooth plate can do rotary motion on the mounting shaft; the second-stage duplex tooth is provided with a fifth through hole, the fifth protruding shaft stretches into the fifth through hole, and the second-stage duplex tooth can do rotary motion on the fifth protruding shaft.

As a further improvement of the utility model, the three-stage gear transmission device further comprises a gear bracket positioned in the shell, wherein a third protruding shaft and a fourth protruding shaft are arranged on the gear bracket, two third-stage tooth plates are respectively arranged on the third protruding shaft and the fourth protruding shaft, and the two third-stage tooth plates can respectively do rotary motion on the third protruding shaft and the fourth protruding shaft.

As a further improvement of the utility model, the three-stage gear transmission device further comprises a gear, wherein the gear is matched with the first-stage tooth plate, and when the gear rotates, the gear rotates to synchronously drive the first-stage tooth plate to rotate.

As a further improvement of the utility model, the shell comprises a lock shell and a lock cover which is installed together with the lock shell, the lock shell is fixedly provided with a sixth convex shaft, the first-stage tooth plate is provided with a sixth through hole, the gear is provided with a seventh through hole, the sixth convex shaft stretches into the sixth through hole, the first-stage tooth plate can perform rotary motion on the sixth convex shaft, the sixth convex shaft stretches into the seventh through hole, the gear can perform rotary motion on the sixth convex shaft, and the first-stage tooth plate is connected with the gear.

As a further improvement of the utility model, the housing comprises a lock shell and a lock cover mounted with the lock shell, wherein the lock shell is provided with a sixth protruding shaft, the sixth protruding shaft can rotate in the lock shell, the first-stage tooth plate is fixedly mounted on the sixth protruding shaft, and the gear is fixedly mounted on the sixth protruding shaft.

The utility model also provides an electric lock body, which comprises a motor, a transmission rack, a lock tongue and the three-stage gear transmission device, wherein the motor is connected with the transmission rack, the motor is used for driving the transmission rack to reciprocate, the transmission rack drives the lock tongue to move in the reciprocating process, so that unlocking or locking is completed, the gear can be driven to rotate by the movement of the transmission rack, and the transmission rack can be driven to move by the rotation of the gear.

As a further improvement of the utility model, the electric lock body also comprises a first transmission mechanism and a second transmission mechanism, the lock tongue comprises a first lock tongue and a second lock tongue, and the transmission rack drives the first lock tongue to move through the first transmission mechanism in the process of reciprocating movement, so as to complete unlocking or locking; and the transmission rack drives the second lock tongue to move through the second transmission mechanism in the reciprocating motion process, so that unlocking or locking is completed.

As a further improvement of the utility model, the electric lock body further comprises an output tooth plate, wherein the output shaft of the motor is matched with the output tooth plate, the output tooth plate is driven to rotate by the output shaft of the motor, the transmission rack is provided with a tooth shape, and the output tooth plate is meshed with the tooth shape; the first transmission mechanism comprises a first protruding shaft and a third waist groove, the first lock tongue is provided with the first protruding shaft, the transmission rack is provided with the third waist groove, the first protruding shaft is positioned in the third waist groove, and the first lock tongue can be synchronously driven to move when the transmission rack reciprocates; the second transmission mechanism comprises a shifting piece, the electric lock body further comprises a pressure spring, the tail end of the second lock tongue is connected with the pressure spring, the pressure spring is abutted against the inner surface of the shell, the second lock tongue stretches out of the shell through the elastic force of the pressure spring, the shifting piece can rotate in the shell, the transmission rack is provided with a first bulge, when the transmission rack moves to the position of the shifting piece, the first bulge is in contact with the shifting piece, the first bulge pushes the shifting piece to rotate, and the shifting piece pushes the second lock tongue to retract into the shell; the electric lock body further comprises a handle shifting fork and a manual unlocking shifting fork which are positioned in the shell, the transmission rack is provided with a second bulge, the handle shifting fork and the manual unlocking shifting fork can rotate in the shell, the handle shifting fork can be driven to rotate after rotating by a certain angle, the rotation of the manual unlocking shifting fork can drive the shifting piece to rotate, the second lock tongue is pushed to retract into the shell by the shifting piece, and the rotation of the manual unlocking shifting fork can push the second bulge to enable the transmission rack to move, so that the first lock tongue is driven to move.

The beneficial effects of the utility model are as follows: in the utility model, the lock tongue opening and closing structure of the lock body driven by the key to rotate the lock core adopts a three-stage gear transmission technical scheme, and the transmission structure is simple and has higher stability.

Drawings

FIG. 1 is an assembled view of a lock housing and a lock cover;

fig. 2 is an assembly view of a gear motor;

FIG. 3 is an assembly view of a drive rack;

FIG. 4 is an assembled view of a second latch bolt (tongue);

FIG. 5 is a block diagram of the second locking bolt mounted to the housing;

FIG. 6 is an assembly view of a handle fork, a manual unlocking fork, and a plectrum;

FIG. 7 is an assembly view of the first latch bolt (square bolt) from one perspective;

FIG. 8 is an assembly view of the first latch bolt (square bolt) from another perspective;

FIG. 9 is an assembly view of the transmission of the lock cylinder;

FIG. 10 is a first stage tooth plate and gear assembly;

FIG. 11 is a diagram of a baffle mated with a first and second photovoltaic cell type switch;

FIG. 12 is a latch return diagram after unlocking the handle fork;

fig. 13 is a gear motor assembly diagram;

FIG. 14 is a block diagram of a fourth tooth;

FIG. 15 is a block diagram of a return tab;

FIG. 16 is an assembly view of the tachometer return push plate;

FIG. 17 is a block diagram of a first double tooth;

FIG. 18 is a block diagram of a second double tooth;

fig. 19 is a structural view of the third double teeth.

Detailed Description

As shown in fig. 1 to 19, the utility model discloses an electric lock body, which comprises a shell, a motor, a detection control module, a transmission part and a lock tongue, wherein the motor is connected with the transmission part and is used for driving the transmission part to reciprocate, and the transmission part drives the lock tongue to move in the reciprocating process so as to enable the lock tongue to extend out of the shell or retract into the shell, thereby completing unlocking or locking; the detection control module is used for detecting the movement position of the transmission part, and when the detection control module detects that the transmission part reaches the designated position, the detection control module sends an instruction to the motor to enable the motor to brake.

As an embodiment of the detection control module, the detection control module comprises a processing chip, a first camera and a second camera, wherein the first camera and the second camera are fixed, a marker is arranged on the transmission part, for example, when the transmission part moves to the first camera position, the first camera detects the marker, and the processing chip sends an instruction to the motor to brake the motor to finish locking; when the transmission part moves to the second camera, the second camera detects the marker, and the processing chip sends an instruction to the motor to brake the motor, so that unlocking is completed.

As a preferred embodiment of the detection control module, the detection control module is a motor control board 10, the motor control board 10 is provided with a first photoelectric slot type switch 1003 and a second photoelectric slot type switch 1004, the transmission component is provided with a baffle 405, and when the baffle 405 is positioned in the first photoelectric slot type switch 1003 or the second photoelectric slot type switch 1004, the motor control board 10 sends a command to the motor to brake the motor. For example, when the transmission member moves and the shutter 405 is located in the first photoelectric slot type switch 1003 (indicating that the shutter is in place), the motor control board 10 sends a command to the motor to brake the motor and complete the shutter when the power is off; when the transmission member moves and the shutter 405 is located in the second photoelectric slot type switch 1004 (indicating that the lock is in place), the motor control board 10 sends a command to the motor to brake and power off the motor, and the lock is completed. The motor control board 10 may be connected to the motor by a wire or by a wireless connection, so long as the command of the motor control board 10 can be transmitted to the motor.

The electric lock body also comprises a first transmission mechanism and a second transmission mechanism, wherein the lock tongue comprises a first lock tongue 14 and a second lock tongue 5, and the transmission part drives the first lock tongue 14 to move through the first transmission mechanism in the process of reciprocating motion, so that unlocking or locking is completed; the transmission part drives the second lock tongue 5 to move through the second transmission mechanism in the reciprocating motion process, so that unlocking or locking is completed.

First locking bolt 14 may be a tongue or a square bolt, and in the present utility model, first locking bolt 14 is preferably a square bolt. The second locking tongue 5 may be a tongue or a square tongue, and in the present utility model, the second locking tongue 5 is preferably a tongue.

The transmission part is a transmission rack 4, the electric lock body further comprises an output tooth piece 303, an output shaft of the motor is matched with the output tooth piece 303, the output tooth piece 303 is driven to rotate by the output shaft of the motor, the transmission rack 4 is provided with a tooth form 403, and the output tooth piece 303 is meshed with the tooth form 403 to form gear rack transmission.

The first transmission mechanism comprises a first protruding shaft 1402 and a third waist groove 404, the first lock tongue 14 is provided with the first protruding shaft 1402, the transmission rack 4 is provided with the third waist groove 404, the first protruding shaft 1402 is positioned in the third waist groove 404, and the first lock tongue 14 can be synchronously driven to move when the transmission rack 4 reciprocates.

The second transmission mechanism comprises a pulling piece 12, the electric lock body further comprises a pressure spring 9, the tail end of the second spring bolt 5 is connected with the pressure spring 9, the pressure spring 9 is abutted to the inner surface of the shell, the second spring bolt 5 stretches out of the shell through the elastic force of the pressure spring 9, the pulling piece 12 can rotate in the shell, the transmission rack 4 is provided with a first protrusion 405, when the transmission rack 4 moves to the position of the pulling piece 12, the first protrusion 405 is in contact with the pulling piece 12, the first protrusion 405 pushes the pulling piece 12 to rotate, and the pulling piece 12 pushes the second spring bolt 5 to retract into the shell.

The electric lock body further comprises a handle shifting fork 11 and a manual unlocking shifting fork 13 which are positioned in the shell, the transmission rack 4 is provided with a second protrusion 406, the handle shifting fork 11 and the manual unlocking shifting fork 13 can rotate in the shell, the handle shifting fork 11 can drive the manual unlocking shifting fork 13 to rotate after rotating for a certain angle, the rotation of the manual unlocking shifting fork 13 can drive the shifting piece 12 to rotate, the second lock tongue 5 is pushed to retract into the shell through the shifting piece 12, and the rotation of the manual unlocking shifting fork 13 can push the second protrusion 406, so that the transmission rack 4 moves, and the first lock tongue 14 is driven to move. The electric lock body is not provided with a handle during production and lock selling, and after a user buys the electric lock body, the user only needs to install the handle on the handle shifting fork 11.

The shifting sheet 12 is arranged on the handle shifting fork 11, and the shifting sheet 12 and the handle shifting fork 11 can do independent rotary motion and are not driven by each other; when the handle shifting fork 11 rotates, the root 1103 of the handle shifting fork 11 pushes the root 1302 of the manual unlocking shifting fork 13, so that the manual unlocking shifting fork 13 rotates; when the manual unlocking shifting fork 13 rotates, the end 1303 of the manual unlocking shifting fork 13 pushes the second protrusion 406 to enable the transmission rack 4 to move, so as to drive the first lock tongue 14 to move; the plectrum 12 is equipped with circular arc surface 1202 and driving lever 1203, and this electronic lock body still includes guide block 6, guide block 6 front end is installed second spring bolt 5, guide block 6 rear end is connected pressure spring 9, when transmission rack 4 moves to plectrum 12 position, first protruding 405 with the circular arc surface 1202 of plectrum 12 contacts, first protruding 405 promotes plectrum 12 is rotatory, driving lever 1203 of plectrum 12 promotes guide block 6 makes second spring bolt 5 retract to in the casing.

The shell comprises a lock shell 1 and a lock cover 2 which is installed together with the lock shell 1, for example, the lock shell 1 and the lock cover 2 are fixed together by screws, the lock shell 1 is provided with a first boss 103 and a second boss 104, the transmission rack 4 is provided with a first waist groove 401 and a second waist groove 402, the first boss 103 stretches into the first waist groove 401, the first waist groove 401 can reciprocate along the first boss 103, the second boss 104 stretches into the second waist groove 402, and the second waist groove 402 can reciprocate along the second boss 104; the connecting rod of the second lock tongue 5 and the guide block 6 are fixed together through the fixing screw 8, the lock shell 1 is provided with a bearing groove 105, the connecting rod of the second lock tongue 5 can move along the bearing groove 105, the guide block 6 is provided with a third boss 601 and a fourth boss 602, the lock shell 1 is provided with a first groove 106 and a second groove 107, the third boss 601 stretches into the first groove 106, the third boss 601 can do reciprocating sliding motion in the first groove 106, the fourth boss 602 stretches into the second groove 107, and the fourth boss 602 can do reciprocating sliding motion in the second groove 107; when the second lock tongue 5 is retracted, the compression spring 9 makes compression movement, and when the retraction force of the second lock tongue 5 is released, the second lock tongue 5 pops out due to the compression force of the compression spring 9; the motor control board 10 is mounted on the lock case 1, the motor control board 10 is provided with a first through hole 1001 and a second through hole 1002, the lock case 1 is provided with a first screw hole 109 and a second screw hole 1010, the first through hole 1001 and the first screw hole 109 are aligned and fixed by screws, and the second through hole 1002 and the second screw hole 1010 are aligned and fixed by screws; the lock case 1 is provided with a first hole 1011, the lock cover 2 is provided with a second hole 201, the handle fork 11 is provided with a bottom boss 1101 and a top boss 1102, the bottom boss 1101 extends into the first hole 1011, the bottom boss 1101 can rotate in the first hole 1011, the top boss 1102 extends into the second hole 201, and the top boss 1102 can rotate in the second hole 201; the shifting sheet 12 is provided with a third through hole 1201, and the third through hole 1201 is sleeved on the outer surface of the handle shifting fork 11; the manual unlocking fork 13 is provided with a fourth through hole 1301, the lock housing 1 is provided with a second protruding shaft 1012, the second protruding shaft 1012 extends into the fourth through hole 1301, and the manual unlocking fork 13 can rotate by taking the second protruding shaft 1012 as a center pivot.

The electric lock body also comprises a transmission device of the lock cylinder, and the transmission device comprises a lock cylinder rotating piece and a rotating part which are positioned in the shell. In the existing electric door lock, no matter the electric switch lock or the handle switch lock, the lock core can rotate along with the switch lock in the process of switching the lock, so that the abrasion of the lock core and related accessories is caused, and the long-term use of the door lock is influenced. Because the utility model adopts the idle connecting mechanism, the lock core is prevented from rotating by the idle connecting mechanism in the process of unlocking or locking by the movement of the lock tongue, the abrasion of the lock core and related coordination is prevented, and the product quality is improved.

The lock cylinder rotating piece is the lock cylinder gear 16, the rotating part is the gear 20, the lock cylinder is not installed when the electric lock body is produced and sold, after a user buys the electric lock body, the user installs the lock cylinder on the lock cylinder gear 16, and when the electric lock is used, a key is inserted into the lock cylinder to rotate, and the lock cylinder is driven to rotate by the lock cylinder gear 16.

As a first embodiment of the transmission device, the idle connection mechanism includes a protruding strip and a sliding groove, the gear 20 is provided with the protruding strip, the lock cylinder gear 16 is provided with the sliding groove, the protruding strip stretches into the sliding groove, and the protruding strip can slide in the sliding groove, when the gear 20 rotates, the protruding strip slides in the sliding groove, and when the protruding strip abuts against the inner edge of the sliding groove, the protruding strip drives the lock cylinder gear 16 to rotate together.

As a second embodiment of the transmission device, the transmission device comprises a first stage tooth piece 19, the idle connection mechanism comprises a convex rod 2002 and a groove 1902, the gear 20 is provided with the convex rod 2002, the first stage tooth piece 19 is provided with the groove 1902, the positions of the convex rod 2002 and the groove 1902 can be exchanged, namely, the gear 20 is provided with the groove 1902, the first stage tooth piece 19 is provided with the convex rod 2002, the convex rod 2002 stretches into the groove 1902, the convex rod 2002 can slide in the groove 1902 when the gear 20 rotates, the convex rod 2002 drives the first stage tooth piece 19 to rotate together when the convex rod 2002 is abutted against the inner edge of the groove 1902, the first stage tooth piece 19 is meshed with the gear 20, and the gear 20 is driven to rotate by the first stage tooth piece 19.

As a third embodiment (preferred embodiment) of the transmission device, the transmission device comprises a first stage tooth piece 19, a second stage duplex tooth 18 and a third stage tooth piece 17, the idle connection mechanism comprises a convex rod 2002 and a groove 1902, the gear 20 is provided with the convex rod 2002, the first stage tooth piece 19 is provided with the groove 1902, the positions of the convex rod 2002 and the groove 1902 can be interchanged, namely, the gear 20 is provided with the groove 1902, the first stage tooth piece 19 is provided with the convex rod 2002, the convex rod 2002 stretches into the groove 1902, the convex rod 2002 can slide in the groove 1902 when the gear 20 rotates, the convex rod 2002 drives the first stage tooth piece 19 to rotate together when the convex rod 2002 collides against the inner edge of the groove 1902, the second stage duplex tooth 18 comprises a large tooth piece and a small tooth 1802, the first stage tooth piece 19 is meshed with the small tooth piece 1802, the large tooth piece is meshed with the third stage tooth 17, and the third stage tooth 17 is meshed with the third stage tooth 17. The number of the third-stage tooth plates 17 is two.

In the existing electric door lock, the lock tongue opening and closing structure of the lock body driven by the key to rotate the lock core can be completed only by 4-level or 5-level gear transmission, and the technical defects of complex transmission structure and low stability are caused by 4-level or 5-level gear transmission. In order to solve the problems in the prior art, the third embodiment of the transmission device adopts a technical scheme of three-stage gear transmission, the first-stage tooth piece 19, the second-stage duplex tooth 18 and the third-stage tooth piece 17 form three-stage gear transmission, the key rotation lock cylinder drives the lock tongue to open and close the structure, and the transmission structure is simple and has higher stability.

The transmission device further comprises a gear bracket 15, wherein the gear bracket 15 is installed in the shell, the gear bracket 15 is provided with a containing groove 1503, the lock cylinder gear 16 is installed in the containing groove 1503, and the lock cylinder gear 16 can do rotary motion in the containing groove 1503; the gear support 15 is provided with a third protruding shaft 1504, a fourth protruding shaft 1505 and a fifth protruding shaft 1506, two third-stage tooth plates 17 are respectively mounted on the third protruding shaft 1504 and the fourth protruding shaft 1505, and the two third-stage tooth plates 17 can respectively perform rotary motion on the third protruding shaft 1504 and the fourth protruding shaft 1505; the second-stage duplex gear 18 is provided with a fifth through hole 1801, the fifth protruding shaft 1506 extends into the fifth through hole 1801, and the second-stage duplex gear 18 can perform a rotational movement on the fifth protruding shaft 1506; the lock case 1 is provided with a sixth protruding shaft 1014, the first stage tooth plate 19 is provided with a sixth through hole 1901, the gear 20 is provided with a seventh through hole 2001, the sixth protruding shaft 1014 extends into the sixth through hole 1901, the first stage tooth plate 19 can perform rotational movement on the sixth protruding shaft 1014, the sixth protruding shaft 1014 extends into the seventh through hole 2001, and the gear 20 can perform rotational movement on the sixth protruding shaft 1014.

The present utility model can be further modified to a third embodiment of the transmission, which constitutes a fourth embodiment of the transmission, in which the idle connection mechanism in the third embodiment is removed, and when the gear 20 rotates, the gear 20 rotates to synchronously drive the first stage teeth 19 to rotate. The gear 20 rotates to drive the first stage of tooth plates 19 to rotate synchronously in two schemes, the following description respectively describes the first scheme: the lock case 1 is fixedly provided with a sixth protruding shaft 1014, the first stage tooth piece 19 is provided with a sixth through hole 1901, the gear 20 is provided with a seventh through hole 2001, the sixth protruding shaft 1014 extends into the sixth through hole 1901, the first stage tooth piece 19 can rotate on the sixth protruding shaft 1014, the sixth protruding shaft 1014 extends into the seventh through hole 2001, the gear 20 can rotate on the sixth protruding shaft 1014, the first stage tooth piece 19 is connected with the gear 20 (for example, the first stage tooth piece 19 is connected with the gear 20 through a connecting rod, when the first stage tooth piece 19 rotates, the gear 20 can be driven to synchronously rotate through the connecting rod, and when the gear 20 rotates, the first stage tooth piece 19 can also be driven to synchronously rotate through the connecting rod).

The second scheme is as follows: the lock shell 1 is provided with a sixth convex shaft 1014, the sixth convex shaft 1014 can rotate in the lock shell 1, the first-stage tooth piece 19 is fixedly arranged on the sixth convex shaft 1014, the gear 20 is fixedly arranged on the sixth convex shaft 1014, and when the first-stage tooth piece 19 rotates, the gear 20 can be driven to synchronously rotate through the sixth convex shaft 1014; when the gear 20 rotates, the first stage tooth plate 19 can also be driven to synchronously rotate by the sixth convex shaft 1014.

As a preferred embodiment of the present utility model, the motor of the present utility model is a gear motor, which includes a motor body 305 and an output shaft 306. In the existing electric door lock, the existing gear motor drives a load to work as soon as the existing gear motor is electrified, so that starting buffering time is not needed, and the service life of the motor is influenced. In order to solve the problems of the prior art, the gear motor of the present utility model further includes a buffer mechanism, the motor body 305 is provided with a motor rotating shaft 307, and when the motor rotating shaft 307 rotates, the buffer mechanism drives the output shaft 306 to rotate after the motor rotating shaft 307 rotates for a certain time.

Because the gear motor is provided with the buffer mechanism, the gear motor can not immediately drive the load to work after being electrified, the starting buffer time is provided, and the service life of the gear motor is prolonged.

As a first embodiment of the gear motor, the gear motor further comprises a gear box, the gear box is mounted with the motor body 305, the motor rotating shaft 307 extends into the gear box, a fourth tooth piece 308 and a return piece 309 are mounted in the gear box, the motor rotating shaft 307 can drive the fourth tooth piece 308 to rotate, the return piece 309 is connected with the output shaft 306, the buffer mechanism comprises a convex block 3092 and a concave groove 3081, the position of the convex block 3092 and the position of the fourth tooth piece 308 are provided with the concave groove 3081, the positions of the convex block 3092 and the concave groove 3081 can also be interchanged, namely, the return piece 309 is provided with the concave groove 3081, the fourth tooth piece 308 is provided with the convex block 3092, the convex block 3092 extends into the concave groove 3081, the concave groove 3081 can slide along the convex block 3092, when the motor rotating shaft 307 rotates, the concave groove 3081 slides along the convex block 3092, and the position of the concave groove 3081 can drive the concave piece 3092 to rotate synchronously when the output shaft 306 rotates, and the return piece 309 rotates synchronously.

As a second embodiment of the gear motor, the second embodiment is a further improvement on the first embodiment, the gear motor further comprises a first duplex tooth 310, a second duplex tooth 311 and a third duplex tooth 312 which are positioned in the reduction box, the first duplex tooth 310 and the second duplex tooth 311 are meshed to form gear transmission, the second duplex tooth 311 and the third duplex tooth 312 are meshed to form gear transmission, the third duplex tooth 312 and the fourth tooth piece 308 are meshed to form gear transmission, and the motor rotating shaft 307 can drive the first duplex tooth 310 to rotate.

As a third embodiment of the gear motor, the third embodiment is a further improvement on the second embodiment, the gear motor further includes a multi-headed worm 313 located in the reduction gearbox, the motor rotating shaft 307 is connected to the multi-headed worm 313, and rotation of the multi-headed worm 313 can drive the first duplex gear 310 to rotate.

The reduction gearbox comprises a reduction gearbox shell 314 and a reduction gearbox cover 315 installed at the opening position of the reduction gearbox shell 314, the reduction gearbox shell 314 is provided with a first mounting hole 3141, a second mounting hole 3142, a third mounting hole 3143 and a fourth mounting hole 3144, the reduction gearbox further comprises a first fixed shaft 316, a second fixed shaft 317, a third fixed shaft 318 and a first positioning shaft sleeve 319, the first fixed shaft 316 is installed in the first mounting hole 3141, the second fixed shaft 317 is installed in the second mounting hole 3142, the third fixed shaft 318 is installed in the third mounting hole 3143, the first positioning shaft sleeve 319 is installed in the third mounting hole 3144, the first double-tooth 310 is installed on the first fixed shaft 316 and can rotate, the second double-tooth 311 is installed on the second fixed shaft 317 and can rotate, the third double-tooth 312 is installed on the third fixed shaft 318 and can rotate, the output shaft 306 is installed in the second positioning shaft sleeve 321 and can rotate in the second positioning shaft sleeve 321 and the second positioning shaft sleeve 306, and the second positioning shaft sleeve 306 can rotate in the second positioning shaft sleeve 321 and the second positioning shaft sleeve 306.

The gear motor further comprises a vibration damping film 320, the vibration damping film 320 is connected with the motor rotating shaft 307, and the motor body 305 is a hollow cup motor.

The gear motor further includes a return control module for detecting whether the boss 3092 is located at the start position of the concave groove 3081, for example, when the boss 3092 is located at the intermediate position of the concave groove 3081, then the boss 3092 is considered to be located at the start position of the concave groove 3081.

The return control module comprises a return pressing plate 322 and a magnet 323, wherein the magnet 323 is installed on the fourth tooth piece 308, for example, the fourth tooth piece 308 is provided with a fifth installation hole 3082, and the magnet 323 is installed in the fifth installation hole 3082; the speed measuring return pressing plate 322 is provided with a Hall device 324.

The motor control board 10 is connected to the return pressing plate 322 and the motor body 305, respectively, for example, the motor control board 10 is electrically connected to the return pressing plate 322 and the motor body 305 through wires, respectively, which is convenient for communication and convenient for power supply.

When the motor control board 10 sends out an instruction during operation, the hollow cup motor synchronously drives the multi-head worm 313, the first duplex gear 310, the second duplex gear 311, the third duplex gear 312, the fourth gear 308, the return piece 309 and the output shaft 306 to move; when the stroke is rotated in place (i.e., when the shutter 405 is positioned in the first or second photo cell type switch 1003 or 1004), the motor control board 10 sends a command to the motor to brake and de-energize the motor, then the motor control board 10 sends a command to reverse the motor shaft 307 (because the bump 3092 abuts against the inner edge of the concave groove 3081 when the stroke is rotated in place, the buffering function is disabled when the hollow cup motor is restarted, so that the motor shaft 307 is reversed to position the bump 3092 at the start position of the concave groove 3081 for ensuring the buffering function), and when the magnet 323 on the fourth tooth plate 308 rotates to a certain angle to react with the hall device 324 by an electrical signal, the bump 3092 is determined to be positioned at the start position of the concave groove 3081, then the motor control board 10 sends a command to stop the hollow cup motor to de-energize, and the motor shaft 307 stops rotating.

The output shaft 306 is connected to the output teeth 303.

The lock case 1 is provided with a third hole 1013, the first lock tongue 14 can reciprocate in the third hole 1013, the gear bracket 15 is provided with a fifth boss 1501, the first lock tongue 14 is provided with a third groove 1401, the fifth boss 1501 extends into the third groove 1401, and the third groove 1401 can reciprocate along the fifth boss 1501.

The outer surface of the reduction gearbox is provided with a sixth boss 301 and a seventh boss 302, the lock shell 1 is provided with a fourth hole 101 and a fifth hole 102, the sixth boss 301 stretches into the fourth hole 101, the seventh boss 302 stretches into the fifth hole 102 for positioning, and the reduction gearbox is fixed on the lock shell 1 through screws. The output tooth 303 and the tooth shape 403 on the transmission rack 4 are in gear-rack transmission.

Electric unlocking principle: when the motor control board 10 instructs the motor to work, the transmission rack 4 can reciprocate to drive the gear 20 to rotate (when the baffle 405 on the transmission rack 4 reciprocates into the first photoelectric slot type switch 1003 on the motor control board 10 (indicating that the lock is closed in place), the motor is braked and is powered off, the motor rotating shaft 307 reverses to enable the convex block 3092 to be located at the starting point of the concave slot 3081 to finish locking, and when the baffle 405 on the transmission rack 4 reciprocates into the second photoelectric slot type switch 1004 on the motor control board 10 (indicating that the lock is opened in place), the motor is braked and is powered off, and the motor rotating shaft 307 reverses to enable the convex block 3092 to be located at the starting point of the concave slot 3081 to finish unlocking, so that accurate control stroke is realized, the first lock tongue 14 (square tongue) is driven to reciprocate, the shifting piece 12 is driven to rotate by taking the handle shifting fork 11 as a fulcrum, and the shifting piece 12 rotates to drive the guide piece 6 and the second lock tongue 5 (oblique tongue) to reciprocate.

Principle of unlocking the handle: after rotating the handle shifting fork 11 by a certain angle, driving the manual unlocking shifting fork 13 to rotate, and driving the transmission rack 4 and the first lock tongue 14 (square tongue) to reciprocate by the manual unlocking shifting fork 13; after the handle shifting fork 11 rotates for a certain angle, the manual unlocking shifting fork 13 can be driven to rotate, the rotation of the manual unlocking shifting fork 13 can drive the shifting piece 12 to rotate, and the second lock tongue 5 is pushed by the shifting piece 12 to retract into the shell.

The principle of lock core switch lock: the lock cylinder rotates to synchronously drive the lock cylinder gear 16, the third-stage tooth piece 17, the second-stage duplex tooth 18, the first-stage tooth piece 19 and the gear 20 to do rotary motion, and the gear 20 drives the transmission rack 4 to do reciprocating motion, so that motion control of the first lock tongue 14 and the second lock tongue 5 is realized.

The foregoing is a further detailed description of the utility model in connection with the preferred embodiments, and it is not intended that the utility model be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the utility model, and these should be considered to be within the scope of the utility model.

Claims (10)

1. A tertiary gear transmission of lock core, its characterized in that: including casing, and be located lock core gear (16), first order tooth piece (19), second level duplex tooth (18), third level tooth piece (17) in the casing, second level duplex tooth (18) include big tooth piece and little tooth piece (1802), first order tooth piece (19) with little tooth piece (1802) meshing, big tooth piece with third level tooth piece (17) meshing, third level tooth piece (17) with lock core gear (16) meshing.

2. The three stage gear assembly of claim 1 wherein: the number of the third-stage tooth plates (17) is two.

3. The three stage gear assembly of claim 1 wherein: the three-stage gear transmission device comprises a shell, a lock cover (2) and a gear bracket (15), wherein the shell comprises a lock shell (1) and the lock cover (2) is installed with the lock shell (1), the gear bracket (15) is installed in the shell, the gear bracket (15) is provided with a containing groove (1503), a lock cylinder gear (16) is installed in the containing groove (1503), and the lock cylinder gear (16) can do rotary motion in the containing groove (1503); the gear bracket (15) is provided with a mounting shaft and a fifth protruding shaft (1506), the third-stage tooth piece (17) is mounted on the mounting shaft, and the third-stage tooth piece (17) can perform rotary motion on the mounting shaft; the second-stage duplex teeth (18) are provided with fifth through holes (1801), the fifth protruding shafts (1506) extend into the fifth through holes (1801), and the second-stage duplex teeth (18) can perform rotary motion on the fifth protruding shafts (1506).

4. The three stage gear assembly of claim 2 wherein: the three-stage gear transmission device further comprises a gear support (15) located in the shell, a third protruding shaft (1504) and a fourth protruding shaft (1505) are arranged on the gear support (15), two third-stage tooth plates (17) are respectively installed on the third protruding shaft (1504) and the fourth protruding shaft (1505), and two third-stage tooth plates (17) can respectively do rotary motion on the third protruding shaft (1504) and the fourth protruding shaft (1505).

5. The three stage gear transmission of any one of claims 1 to 4 wherein: the three-stage gear transmission device further comprises a gear (20), the gear (20) is matched with the first-stage tooth piece (19), and when the gear (20) rotates, the gear (20) rotates to synchronously drive the first-stage tooth piece (19) to rotate.

6. The three stage gear assembly of claim 5 wherein: the casing includes lock shell (1), and with lock cover (2) that lock shell (1) installed together, lock shell (1) fixed mounting has sixth protruding axle (1014), first level tooth piece (19) are equipped with sixth via hole (1901), gear (20) are equipped with seventh via hole (2001), sixth protruding axle (1014) stretch into in sixth via hole (1901), first level tooth piece (19) can be in rotary motion on sixth protruding axle (1014), sixth protruding axle (1014) stretch into in seventh via hole (2001), gear (20) can be in rotary motion on sixth protruding axle (1014), first level tooth piece (19) link to each other with gear (20).

7. The three stage gear assembly of claim 5 wherein: the shell comprises a lock shell (1) and a lock cover (2) which is arranged together with the lock shell (1), wherein a sixth protruding shaft (1014) is arranged on the lock shell (1), the sixth protruding shaft (1014) can rotate in the lock shell (1), the first-stage tooth piece (19) is fixedly arranged on the sixth protruding shaft (1014), and the gear (20) is fixedly arranged on the sixth protruding shaft (1014).

8. An electric lock body, characterized in that: the three-stage gear transmission device comprises a motor, a transmission rack (4), a lock tongue and any one of claims 5 to 7, wherein the motor is connected with the transmission rack (4), the motor is used for driving the transmission rack (4) to reciprocate, the transmission rack (4) drives the lock tongue to move in the reciprocating process so as to unlock or lock, the gear (20) can be driven to rotate by the movement of the transmission rack (4), and the transmission rack (4) can be driven to move by the rotation of the gear (20).

9. An electric lock according to claim 8, wherein: the electric lock body also comprises a first transmission mechanism and a second transmission mechanism, wherein the lock tongue comprises a first lock tongue (14) and a second lock tongue (5), and the transmission rack (4) drives the first lock tongue (14) to move through the first transmission mechanism in the reciprocating motion process, so that unlocking or locking is completed; the transmission rack (4) drives the second lock tongue (5) to move through the second transmission mechanism in the reciprocating motion process, so that unlocking or locking is completed.

10. An electric lock according to claim 9, wherein: the electric lock body further comprises an output tooth piece (303), wherein an output shaft of the motor is matched with the output tooth piece (303), the output tooth piece (303) is driven to rotate by the output shaft of the motor, the transmission rack (4) is provided with a tooth shape (403), and the output tooth piece (303) is meshed with the tooth shape (403); the first transmission mechanism comprises a first protruding shaft (1402) and a third waist groove (404), the first lock tongue (14) is provided with the first protruding shaft (1402), the transmission rack (4) is provided with the third waist groove (404), the first protruding shaft (1402) is positioned in the third waist groove (404), and the first lock tongue (14) can be synchronously driven to move when the transmission rack (4) reciprocates; the second transmission mechanism comprises a pulling piece (12), the electric lock body further comprises a pressure spring (9), the tail end of the second spring bolt (5) is connected with the pressure spring (9), the pressure spring (9) is abutted against the inner surface of the shell, the second spring bolt (5) stretches out of the shell through the elastic force of the pressure spring (9), the pulling piece (12) can rotate in the shell, the transmission rack (4) is provided with a first bulge (405), when the transmission rack (4) moves to the position of the pulling piece (12), the first bulge (405) is contacted with the pulling piece (12), the first bulge (405) pushes the pulling piece (12) to rotate, and the pulling piece (12) pushes the second spring bolt (5) to retract into the shell; the electric lock body further comprises a handle shifting fork (11) and a manual unlocking shifting fork (13) which are positioned in the shell, the transmission rack (4) is provided with a second bulge (406), the handle shifting fork (11) and the manual unlocking shifting fork (13) can rotate in the shell, the handle shifting fork (11) can be driven to rotate after rotating by a certain angle, the rotation of the manual unlocking shifting fork (13) can drive the shifting piece (12) to rotate, the second lock tongue (5) is pushed to retract into the shell through the shifting piece (12), and the rotation of the manual unlocking shifting fork (13) can push the second bulge (406), so that the transmission rack (4) moves, and the first lock tongue (14) is driven to move.