CN217205884U - Integrated motor reduction gear box of full-automatic intelligent door lock - Google Patents

Abstract

The utility model relates to a style motor reduction gear box, concretely relates to integral type motor reduction gear box of full-automatic intelligent lock. The speed reduction gear box is composed of a shell, a motor and a worm, wherein the motor is installed on the shell, a plurality of speed reduction gear sets which are meshed with each other are installed in the shell, a central shaft is installed at the central part of the shell through an assembly hole, and a limiting mechanism and a resetting mechanism are arranged between the central shaft and the shell. The reduction gear box can be directly rotated to rapidly unlock and lock the handle, and can also be driven by a motor to rotate a central shaft to rapidly unlock and lock the central shaft; therefore, the design can be simplified, the thickness of the lock panel is effectively reduced, the production cost is reduced, the shell can form a plane whole, and the attractiveness is effectively improved; the problem of current lock reduction gear box thickness big, with high costs, influence pleasing to the eye is solved.

Description

Integrated motor reduction gear box of full-automatic intelligent door lock

Technical Field

The utility model relates to a style motor reduction gear box, concretely relates to integral type motor reduction gear box that full-automatic intelligent lock was used.

Background

The existing integrated motor reduction gear box for the full-automatic intelligent door lock is of two types, one type is the integrated motor reduction gear box which is arranged on an inner panel of the lock, a square rod of the gear box corresponds to a lock cylinder position of a lock body, and a lock cylinder tail rod is driven to drive a lock cylinder shifting wheel to rotate and unlock through the square rod of the reduction gear box; the other type is an integrated motor reduction gear box which is arranged on a handle position on an inner panel of the lockset, a square rod of the gear box corresponds to a square hole of a lock body rotating shaft, and a square rod is driven by the square rod to unlock through driving the square hole of the lock body rotating shaft. The integrated motor reduction gear boxes with the two types of structural forms are arranged at the corresponding lock cylinder positions, and arranged at the handle positions, and have the characteristics. In the latter structure, because the gear box is arranged at the position of the handle of the inner panel, and the intelligent door lock must be provided with a built-in quick-opening handle, the handle is horizontally or vertically arranged on the inner panel, and in order to prevent the handle from idling in a large angle, the panel must be also provided with a limiting device for limiting the rotation angle of the handle and a reset device for keeping the handle to return to the initial position after rotating; the structure of the inner panel is complex, the design difficulty is increased, and the thickness and the cost of the panel are increased. Accordingly, there is a need for a gearbox that simplifies the design and reduces overall cost.

Disclosure of Invention

The utility model aims to provide an: the utility model provides an install interior panel handle position at intelligent lock, be provided with center pin stop device and center pin resetting means between its center pin and shell, the handle can the direct mount in the one end of center pin, both can electronic unblank and block, can rotate the handle again and unblank fast and the dedicated integral type motor reduction gear case of full-automatic intelligent lock that blocks.

The technical scheme of the utility model is that:

the utility model provides a dedicated integral type motor gear reduction box of full-automatic intelligent lock, it comprises shell, motor, worm and multistage reduction gear group, and fixed mounting has the motor on the shell, installs intermeshing's multistage reduction gear group by supreme down in proper order in the shell of motor top, and the motor passes through the worm to be connected with multistage reduction gear group meshing, and the center pin, its characterized in that are installed through the bearing in the center part of shell: and a limiting mechanism for limiting the rotation angle of the central shaft and a reset mechanism for keeping the central shaft to return to the initial position after rotating are arranged between the central shaft and the shell.

The handle seat of installation handle is provided with to center pin one end, is provided with the central axis gear on the center pin of handle seat one side, is provided with the square pole socket on the terminal surface of the central axis gear other end, the square pole socket internalization has the square pole, the center pin passes through intermittent drive mechanism by the central axis gear and is connected with the meshing of multistage reduction gear group.

The central shaft gear is an incomplete gear; a raised limiting convex block is arranged on the central shaft gear, and a spring shifting block is arranged on the end face of one side of the limiting convex block.

The limiting mechanism consists of a limiting lug on the central shaft and a limiting column which is arranged on the inner wall of the shell in an up-and-down manner; the limit lug is in intermittent contact connection with the limit column so as toFor is toThe limiting lug blocks and limits.

The reset mechanism consists of a torsion spring, a spring shifting block and a spring backer arranged on the inner wall of the shell; the torsion spring is sleeved on the central shaft, and the end heads at the two ends of the torsion spring bypass the spring shifting block and are respectively in contact connection with the two sides of the spring backer; the spring backer is a raised cuboid on the inner wall of the shell, and the ends of the two ends of the torsion spring form a clamping state for the spring shifting block.

The intermittent transmission mechanism consists of a gear shaft, a driving gear and a driven gear, wherein the driving gear and the driven gear are movably arranged on the gear shaft; the driving gear is meshed with the multi-stage reduction gear set, and the driven gear is meshed with the central shaft gear.

A fan-shaped driving block is arranged on the end surface of one side of the driving gear, a groove corresponding to the driving block is arranged on the end surface of one side of the driven gear, and a driven lug corresponding to the driving block is arranged on the inner wall of the groove; the driving gear and the driven gear are intermittently connected with each other through the matching of the driving block and the driven lug, the driven gear is meshed with the central shaft gear, and the driving gear is meshed with the reduction pinion of the three-level gear reduction unit.

The multistage reduction gear set comprises a first-stage gear reduction unit, a second-stage gear reduction unit and a third-stage gear reduction unit, wherein the first-stage gear reduction unit, the second-stage gear reduction unit and the third-stage gear reduction unit are respectively composed of a gear shaft and a reduction gear wheel movably arranged on the gear shaft, the gear shaft is fixedly connected with the shell, and the reduction gear wheel of the first-stage gear reduction unit, the second-stage gear reduction unit and the third-stage gear reduction unit are of an integrated structure.

The motor is characterized in that a deceleration large gear of the first-stage gear deceleration unit is meshed with a worm on a motor shaft, a deceleration small gear of the first-stage gear deceleration unit is meshed with a deceleration large gear of the second-stage gear deceleration unit, a deceleration small gear of the second-stage gear deceleration unit is meshed with a deceleration large gear of the third-stage gear deceleration unit, and a deceleration small gear of the third-stage gear deceleration unit is meshed with a driving gear of the intermittent transmission mechanism.

One end of the central shaft extends to the outer end of the shell; the end of the central shaft 17 extending to the outer end of the shell is fixedly provided with a limiting sheet; the limiting piece is provided with a limiting lug, the end surface of one side of the limiting lug is provided with a spring shifting block, a torsion spring is sleeved on a central shaft between the limiting piece and the shell, the outer surface of the shell is provided with a spring backer and two limiting columns corresponding to the torsion spring, the spring backer and the two limiting columns are arranged in a triangular shape on the outer surface of the shell, and the spring backer is a convex rectangular block; the limiting lug on the limiting sheet and the two limiting columns arranged on the outer surface of the shell form a limiting mechanism; the torsion spring, the spring shifting block on the limiting piece and the spring backer on the shell form a reset mechanism.

The beneficial effects of the utility model reside in that:

the integrated motor reduction gear box for the full-automatic intelligent door lock can directly rotate a handle arranged on a handle seat on a central shaft to realize quick unlocking and locking, and can also enable the motor to drive a gear of the central shaft through a multistage reduction gear set and an intermittent transmission mechanism in sequence to enable the central shaft to rotate, and the central shaft drives a square rod to realize quick unlocking and locking; the rotation angle of the central shaft can be limited through the limiting column of the shell and the limiting lug on the central shaft, and the reset of the central shaft after rotation can be ensured through the spring backer on the shell and the cooperation of the spring shifting block and the torsion spring on the central shaft, so that the rotation angle of the handle can be limited and the reset of the handle after rotation can be ensured; the limiting mechanism and the resetting mechanism of the central shaft, which are arranged between the central shaft and the shell, can be arranged inside the shell of the gear box or outside the shell of the gear box according to actual conditions and integrated with the gear box, and are designed in a modularized way, so that the thickness of a lock panel is effectively reduced, the design is simplified, the production cost is reduced, the shell can form a plane whole, and the attractiveness is effectively improved; the problem of current lock reduction gear box thickness, with large costs, influence pleasing to the eye is solved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic view of the gear connection state of the present invention;

fig. 3 is a front schematic view of the gear connection state of the present invention;

fig. 4 is a back schematic view of the gear connection state of the present invention;

FIG. 5 is a schematic axial view of the intermittent drive mechanism of the present invention;

FIG. 6 is a schematic right-side view of FIG. 5;

FIG. 7 is a structural schematic in the direction A-A of FIG. 6;

fig. 8 is a schematic structural view of the driving gear of the present invention;

fig. 9 is a schematic structural view of the driven gear of the present invention;

fig. 10 is a schematic structural view of the center shaft of the present invention;

fig. 11 is an installation schematic diagram of the front limiting mechanism and the reset mechanism of embodiment 2 of the present invention;

FIG. 12 is a schematic right view of FIG. 11;

FIG. 13 is a cross-sectional view of FIG. 11;

fig. 14 is an axonometric view of an installation schematic diagram of a limiting mechanism and a resetting mechanism of embodiment 2 of the present invention.

In the figure: 1. the gear reducer comprises a shell, 2, a motor, 3, a worm, 4, a first-level gear reduction unit, 5, a second-level gear reduction unit, 6, a third-level gear reduction unit, 7, a gear shaft, 8, a driving gear, 9, a driven gear, 10, an engagement groove, 11, a driven lug, 12, a driving block, 13, a square rod, 14, a central shaft gear, 15, a handle, 16, a torsion spring, 17, a central shaft, 18, a handle seat, 19, a spring shifting block, 20, a limiting lug, 21, a spring backer, 22, a limiting column, 23 and a limiting sheet.

Detailed Description

Example 1

This integral type motor reduction gear box of full-automatic intelligent lock comprises shell 1, motor 2, worm 3 and multistage reduction gear group, and fixed mounting has motor 2 on the 1 bottom of shell, installs intermeshing's multistage reduction gear group by supreme down in proper order in the shell 1 of motor 2 top. The multistage reduction gear set comprises a first-stage gear reduction unit 4, a second-stage gear reduction unit 5 and a third-stage gear reduction unit 6, the first-stage gear reduction unit 4, the second-stage gear reduction unit 5 and the third-stage gear reduction unit 6 respectively comprise a gear shaft 7 and a reduction gear and a reduction pinion movably mounted on the gear shaft 7, the gear shaft 7 is fixedly connected with the shell 1, and the reduction gear and the reduction pinion of the first-stage gear reduction unit 4, the second-stage gear reduction unit 5 and the third-stage gear reduction unit 6 are of an integrated structure.

A deceleration large gear of the first-stage gear deceleration unit 4 is meshed with a worm 3 on a motor shaft, a deceleration small gear of the first-stage gear deceleration unit 4 is meshed with a deceleration large gear of the second-stage gear deceleration unit 5, and a deceleration small gear of the second-stage gear deceleration unit 5 is meshed with a deceleration large gear of the third-stage gear deceleration unit 6. The first-stage gear reduction unit 4, the second-stage gear reduction unit 5 and the third-stage gear reduction unit 6 are used for enabling the motor 2 to form a large transmission ratio through multi-stage reduction when the motor 2 drives the central shaft 17 to rotate through the worm 3, the first-stage gear reduction unit 4, the second-stage gear reduction unit 5, the third-stage gear reduction unit 6 and the intermittent transmission mechanism, and under the action of the large transmission ratio, on one hand, the transmission torque of the central shaft 17 is increased to ensure that the torque transmitted to the central shaft 17 can drive the lock tongue to move, on the other hand, the rotating speed of the central shaft 17 is reduced, and the central shaft 17 can rotate at a slow speed.

A central shaft 17 is arranged at the central part of the shell 1 through a bearing, the central shaft 17 is of a hollow structure, a handle seat 18 for installing a handle 15 is arranged at one end of the central shaft 17, a central shaft gear 14 is arranged on the central shaft 17 at one side of the handle seat 18, and the central shaft gear 14 is an incomplete gear; the central shaft gear 14 is provided with a raised limit lug 20, and the end surface of one side of the limit lug 20 is provided with a spring shifting block 19. The other end of the central shaft 17 is provided with a square hole for mounting the square rod 13. Between the central shaft 17 and the housing 1, a limit mechanism for limiting the rotation angle of the central shaft 17 and a return mechanism for maintaining the return of the central shaft 17 to the initial position after rotation are provided.

The limiting mechanism is composed of a limiting lug 20 on the central shaft 17 and a limiting column 22 arranged on the inner wall of the shell 1 in an up-down shape, and the limiting lug 20 is in intermittent contact connection with the limiting column 22 so as to block and limit the limiting lug 20.

The reset mechanism consists of a torsion spring 16, a spring shifting block 19 and a spring backer 21 arranged on the inner wall of the shell 1; the torsion spring 16 is sleeved on the central shaft 17, and the end heads at two ends of the torsion spring 16 bypass the spring shifting block 19 and are respectively in contact connection with two sides of the spring backer 21; the spring backer 21 is a raised rectangular body on the inner wall of the shell 1, and the two end heads of the torsion spring 16 form a clamping state for the spring shifting block 19.

The central shaft 17 is meshed with the multi-stage reduction gear set through an intermittent transmission mechanism by the central shaft gear 14. The intermittent transmission mechanism consists of a gear shaft 7, a driving gear 8 and a driven gear 9, wherein the driving gear 8 and the driven gear 9 are movably arranged on the gear shaft 7; the driving gear 8 is engaged with a reduction pinion of the three-stage gear reduction unit 6, and the driven gear 9 is intermittently engaged with the central shaft gear 14. A fan-shaped driving block 12 is arranged on the end face of one side of the driving gear 8 of the intermittent transmission mechanism, an engaging groove 10 is arranged on the end face of the driven gear 9 corresponding to the driving block 12, a driven lug 11 is arranged on the inner wall of the engaging groove, and the driving block 12 extends into the engaging groove 10 and is in intermittent contact with the driven lug 11, so that the driven gear 9 is driven to rotate intermittently.

The reset mechanism has the working principle that: because the reset mechanism is composed of a torsion spring 16, a spring shifting block 19 on the central shaft 17 and a spring backer 21 on the shell 1, the torsion spring 16 is sleeved on the central shaft 17; a spring shifting block 19 is arranged on the end face of the central shaft gear 14 corresponding to the torsion spring 16, and the spring shifting block 19 clamped by the end heads at the two ends of the torsion spring 16 is respectively in contact connection with the two sides of a spring rest 21 on the shell 1; when the central shaft 17 rotates to one side under the action of external force, the spring shifting block 19 on the central shaft 17 drives one end of the torsion spring 16 to synchronously rotate and compress the torsion spring 16 to form energy storage, after the external force on the central shaft 17 disappears, the torsion spring 16 starts to release energy, in the process, the end of the torsion spring 16 drives the central shaft gear 14 to reversely rotate through the spring shifting block 19, and therefore the central shaft 17 is driven to rotate to return to the initial position.

The working principle of the limiting mechanism is as follows: because the central shaft limiting mechanism is composed of the limiting lug 20 on the central shaft 17 and the limiting column 22 on the shell 1, when the central shaft 17 rotates in the forward direction or the reverse direction and the limiting lug 20 of the central shaft 17 contacts the two limiting columns 22 on the base of the shell 1 respectively, the rotation of the central shaft 17 is blocked and cannot continue to rotate, and the maximum rotation angle and the limit position of the rotation motion of the central shaft 17 are at the moment. In practical application, the limit rotation angle of the central shaft is larger than that of the rotating shaft of the matched lock body, otherwise, the lock cannot be opened.

Under initial condition, when central axis 17 receives external force and rotates around the axle center, central axis gear 14 can drive driven gear 9 and rotate in the opposite direction, no matter central axis 17 reaches extreme position on any side around the axle center forward or reverse rotation, set up drive block 12 on driving gear 8 and driven lug 11 on driven gear 9 do not contact, and then can not drive driven gear 9 and rotate, otherwise will be blockked by the resistance of reduction gear set, and unable free positive and negative rotation.

Working mode one and manual mode:

in the initial state, the handle 15 arranged on the central shaft 17 is rotated, the central shaft 17 synchronously rotates, and because the free rotation of the central shaft 17 is not restricted by the reduction gear set and the motor 3 in the initial state, the resistance of the torsion spring 16 of the reset mechanism only needs to be overcome, and when the central shaft 17 does not load, the central shaft 17 stops when rotating to the limit position where the limit lug 20 is contacted with the limit column 22; during loading, the square rod 13 installed in the central square hole of the central shaft 17 synchronously rotates, and the square rod 13 drives the lock body rotating shaft to drive the lock tongue to move, so that the lock is unlocked or locked and then is stopped. After the handle 15 is released, the handle 15 returns to the initial state under the action of the reset mechanism, and in the process, the central shaft gear 14 of the central shaft 17 is always meshed with the driven gear 9 and drives the driven gear 9 to idle.

A second working mode and an electric mode;

1. work: in an initial state, a motor 2 is electrified to enable a worm 3 arranged on a shaft of the motor 2 to rotate, power sequentially passes through a primary gear reduction unit 4, a secondary gear reduction unit 5 and a tertiary gear reduction unit 6 and is transmitted to a driving gear 8 of an intermittent transmission mechanism, the driving gear 8 idles for a certain angle by taking a gear shaft 7 as an axis, a driving block 12 is contacted with a driven lug 11, the driving block 12 drives a driven gear 9 to rotate in the same direction by taking the gear shaft 7 as the axis through the driven lug 11, the driven gear 9 drives a central shaft gear 14 to rotate in the opposite direction, the central shaft 17 rotates along with the driven gear, and when the driven gear is unloaded, the central shaft 17 stops when rotating to a limit position where a limit lug 20 is contacted with a limit column 22; during loading, the square rod 13 drives the lock body rotating shaft to drive the lock bolt to move to complete unlocking or locking and then stop through synchronous rotation of the square rod 13 arranged at the center of the central shaft 17.

2. Resetting: the motor 2 is reversely electrified, the worm 3 arranged on the shaft of the motor 2 reversely rotates, power is transmitted to the driving gear 8 of the intermittent transmission mechanism through the primary gear reduction unit 4, the secondary gear reduction unit 5 and the tertiary gear reduction unit 6 in sequence, the driving gear 8 reversely rotates by taking the gear shaft 7 as the axis, the driving block 12 is separated from the driven lug 11, the driving gear 8 drives the driving block 12 to return to the initial position, the motor stops, the central shaft 17 reversely rotates in the motor 2, because of the reverse rotation of the driving gear 8, the driving block 12 is out of contact with the driven lug 11, the driven gear 9 loses power, the power transmitted to the central shaft gear 14 through the driven gear 9 is also released, and the central shaft gear 14 drives the driven gear 9 to rotate reversely by the central shaft 17 under the action of the reset mechanism, so that the central shaft gear and the driven gear are restored to the initial positions (see fig. 1-10).

Example 2

As a modification or a preferable mode (see fig. 11 to 14)

As shown in FIGS. 11-14; this integral type motor reduction gear box of full-automatic intelligent lock comprises shell 1, motor 2, worm 3 and multistage reduction gear group, and fixed mounting has motor 2 on the 1 bottom of shell, installs intermeshing's multistage reduction gear group by supreme down in proper order in the shell 1 of motor 2 top. The multistage reduction gear set comprises a first-stage gear reduction unit 4, a second-stage gear reduction unit 5 and a third-stage gear reduction unit 6, the first-stage gear reduction unit 4, the second-stage gear reduction unit 5 and the third-stage gear reduction unit 6 respectively comprise a gear shaft 7 and a reduction gear and a reduction pinion movably mounted on the gear shaft 7, the gear shaft 7 is fixedly connected with the shell 1, and the reduction gear and the reduction pinion of the first-stage gear reduction unit 4, the second-stage gear reduction unit 5 and the third-stage gear reduction unit 6 are of an integrated structure.

The reduction gear wheel of the first-stage gear reduction unit 4 is meshed with the worm 3 on the motor shaft, the reduction pinion of the first-stage gear reduction unit 4 is meshed with the reduction gear wheel of the second-stage gear reduction unit 5, and the reduction pinion of the second-stage gear reduction unit 5 is meshed with the reduction gear wheel of the third-stage gear reduction unit 6. The first-stage gear reduction unit 4, the second-stage gear reduction unit 5 and the third-stage gear reduction unit 6 are used for enabling the motor 2 to form a large transmission ratio through multi-stage reduction when the motor 2 drives the central shaft 17 to rotate through the worm 3, the first-stage gear reduction unit 4, the second-stage gear reduction unit 5, the third-stage gear reduction unit 6 and the intermittent transmission mechanism, and under the action of the large transmission ratio, on one hand, the transmission torque of the central shaft 17 is increased to ensure that the torque transmitted to the central shaft 17 can drive the lock tongue to move, on the other hand, the rotating speed of the central shaft 17 is reduced, and the central shaft 17 can rotate at a slow speed.

A central shaft 17 is installed at the central part of the shell 1 through a bearing, the central shaft 17 is of a hollow structure, a handle seat 18 for installing a handle 15 is arranged at one end of the central shaft 17, a central shaft gear 14 is arranged on the central shaft 17 at one side of the handle seat 18, and a square hole for inserting a square rod 13 is arranged at the other end of the central shaft 17. One end of the central shaft 17 extends to the outer end of the shell 1, and a limiting mechanism for limiting the rotation angle of the central shaft 17 and a reset mechanism for keeping the central shaft 17 to return to the initial position after rotating are arranged on the central shaft 17 extending to the outer end of the shell 1.

The central shaft 17 of the integrated motor reduction gear box extends to the outer end of the shell 1; a limiting sheet 23 is fixedly arranged at the end head of the central shaft 17 extending to the outer end of the shell 1; a limiting lug 20 is arranged on the limiting sheet 23, a spring shifting block 19 is arranged on the end face of one side of the limiting lug 20, a torsion spring 16 is sleeved on a central shaft 17 between the limiting sheet 23 and the shell 1, a spring backer 21 and two limiting columns 22 corresponding to the torsion spring 16 are arranged on the outer surface of the shell 1, and the limiting lug 20 is in intermittent contact connection with the limiting columns 22; the spring backer 21 and the two limiting columns 22 are arranged in a triangular shape on the outer surface of the shell 1, and the spring backer 21 is a convex rectangular block. Wherein, the limit lug 20 on the limit sheet 23 and two limit posts 22 arranged on the outer surface of the shell 1 form a limit mechanism; the torsion spring 16, the spring shifting block 19 on the limiting sheet 23 and the spring backer 21 on the shell 1 form a reset mechanism.

The central shaft 17 is meshed with the multi-stage reduction gear set through an intermittent transmission mechanism by the central shaft gear 14. The intermittent transmission mechanism consists of a gear shaft 7, a driving gear 8 and a driven gear 9, wherein the driving gear 8 and the driven gear 9 are movably arranged on the gear shaft 7; the driving gear 8 is engaged with a reduction pinion of the three-stage gear reduction unit 6, and the driven gear 9 is engaged with a central shaft gear 14. The drive gear 8 is in meshing engagement with the reduction pinion of the three-stage gear reduction unit 6. A fan-shaped driving block 12 is arranged on the end face of one side of the driving gear 8 of the intermittent transmission mechanism, an engaging groove 10 is arranged on the end face of the driven gear 9 corresponding to the driving block 12, a driven lug 11 is arranged on the inner wall of the engaging groove, and the driving block 12 extends into the engaging groove 10 and is in intermittent contact with the driven lug 11, so that the driven gear 9 is driven to rotate intermittently.

The operating principle of the resetting mechanism is as follows: the reset mechanism consists of a torsion spring 16, a spring shifting block 19 on a limiting sheet 23 and a spring backer 21 on the shell 1, and the torsion spring 16 is arranged between the shell 1 and the limiting sheet 23 and sleeved on the central shaft 17; the limiting sheet 23 is provided with a spring shifting block 19, and the two end heads of the torsion spring 16 clamp the spring shifting block 19 and are respectively in contact connection with two sides of a spring rest 21 on the shell 1; when the central shaft 17 rotates to one side under the action of external force, the spring shifting block 19 on the limiting piece 23 drives one end of the torsion spring 16 to synchronously rotate and compress the torsion spring 16 to form energy storage, and after the external force applied to the central shaft 17 disappears, the end of the torsion spring 16 drives the central shaft 17 to rotate to return to the initial position through the spring shifting block 19 under the action of the spring force.

The working principle of the limiting mechanism is as follows: because the limiting mechanism is composed of the limiting lug 20 fixedly arranged on the limiting sheet 23 on the central shaft 17 and the limiting column 22 on the shell 1, when the central shaft 17 rotates forwards or reversely, the limiting sheet 23 rotates synchronously, and the limiting lug 20 on the limiting sheet 23 contacts the two limiting columns 22 on the base of the shell respectively, the rotation of the central shaft 17 is blocked and cannot continue to rotate, and the maximum rotation angle and the limit position of the rotation motion of the central shaft 17 are at the moment. In practical application, the limited rotation angle of the central shaft 17 is greater than the rotation angle of the rotating shaft of the matched lock body, otherwise the lock cannot be opened.

Under the initial condition, when the central shaft 17 is rotated around the shaft center by an external force, the central shaft gear 14 can drive the driven gear 9 to rotate in the opposite direction, no matter the central shaft 17 rotates to any limit position around the shaft center in the forward direction or the reverse direction, the driving block 12 arranged on the driven gear 9 is not contacted with the driven lug 11, and further the driving gear 8 can not be driven to rotate, otherwise, the driving gear can be blocked by the resistance of the reduction gear set, and the free forward and reverse rotation can not be realized.

A first working mode and a manual mode:

in the initial state, the handle 15 arranged on the central shaft 17 is rotated, the central shaft 17 synchronously rotates, and because the free rotation of the central shaft 17 is not restricted by a reduction gear and a motor in the initial state, the resistance of a torsion spring 16 in the reset device only needs to be overcome, and when the central shaft 17 does not load, the central shaft 17 stops rotating to the limit position where a limit lug 20 on a limit sheet 23 is contacted with a limit column 22; during loading, the square rod 13 installed in the central square hole of the central shaft 17 synchronously rotates, and the square rod 13 drives the lock body rotating shaft to drive the lock tongue to move, so that the lock is unlocked or locked and then is stopped. After the handle 15 is released, the handle 15 returns to the initial state under the action of the reset mechanism, and in the process, the central shaft gear 14 of the central shaft 17 is always meshed with the driven gear 9 and drives the driven gear 9 to idle.

A second working mode and an electric mode;

1. the work is as follows: in an initial state, a motor 2 is electrified to enable a worm 3 arranged on a motor shaft to rotate, power passes through a primary gear reduction unit 4, a secondary gear reduction unit 5 and a tertiary gear reduction unit 6 in sequence and is transmitted to a driving gear 8 of an intermittent transmission mechanism, the driving gear 8 idles for a certain angle by taking a gear shaft 7 as an axis, a driving block 12 is contacted with a driven lug 11, the driving block 12 drives a central shaft gear 14 to rotate reversely through the driven lug 11, a central shaft 17 rotates along with the central shaft, and when the central shaft is unloaded, the central shaft 17 stops when rotating to a limit position where a limit lug 20 on a limit sheet 23 is contacted with a limit column 22; during loading, the square rod 13 drives the lock body rotating shaft to drive the lock bolt to move to complete unlocking or locking and then stop through synchronous rotation of the square rod 13 arranged at the center of the central shaft 17.

2. Resetting: the motor 2 is reversely electrified, the worm 3 arranged on the shaft of the motor 2 reversely rotates, power sequentially passes through the primary gear reduction unit 4, the secondary gear reduction unit 5 and the tertiary gear reduction unit 6 and is transmitted to the driving gear 8 of the intermittent transmission mechanism, the driving gear 8 reversely rotates by taking the gear shaft 7 as an axis, the driving block 12 is separated from the driven lug 11, the motor stops when the driving gear 8 drives the driving block 12 to return to the initial position, the central shaft 17 is in the reverse rotation process of the motor, the driving block 12 is separated from the driven lug 11 due to the reverse rotation of the driving gear 8, the driven gear 9 loses power, the power transmitted to the central shaft gear 14 through the driven gear 9 is also simultaneously released, and the central shaft 17 drives the driven gear 9 to reversely rotate under the action of the reset mechanism, and then returns to the initial position together.

The above two embodiments are only preferred embodiments of the present invention, and do not represent the present invention having only these two embodiments. The reset mechanism and the limiting mechanism are various in form, and the optimal scheme can be selected according to actual conditions on the premise of meeting the working requirements of the gear box.

Claims (9)

1. The utility model provides a dedicated integral type motor gear reduction box of full-automatic intelligent lock, it is by shell (1), motor (2), worm (3) and multistage reduction gear group constitute, fixed mounting has motor (2) on shell (1), install intermeshing's multistage reduction gear group by supreme down in proper order in shell (1) of motor (2) top, motor (2) are connected with multistage reduction gear group meshing through worm (3), center pin (17) are installed through the bearing in the central point position in shell (1), its characterized in that: and a limiting mechanism for limiting the rotation angle of the central shaft (17) and a reset mechanism for keeping the central shaft (17) to return to an initial position after rotating are arranged between the central shaft (17) and the shell (1).

2. The special integrated motor gear reducer for the full-automatic intelligent door lock according to claim 1, characterized in that: one end of the central shaft (17) is provided with a handle seat (18) for installing a handle (15), and the central shaft (17) on one side of the handle seat (18) is provided with a central shaft gear (14).

3. The special integrated motor gear reducer for the full-automatic intelligent door lock according to claim 2, characterized in that: the central shaft gear (14) is an incomplete gear; a raised limiting lug (20) is arranged on the central shaft gear (14), and a spring shifting block (19) is arranged on the end face of one side of the limiting lug (20).

4. The special integrated motor gear reducer for the full-automatic intelligent door lock according to claim 2, characterized in that: a square rod socket is arranged on the end face of the other end of the central shaft gear (14), a square rod (13) is movably inserted in the square rod socket, and a central shaft (17) is connected with the multistage reduction gear set in a meshing mode through the central shaft gear (14) through an intermittent transmission mechanism.

5. The special integrated motor gear reducer for the full-automatic intelligent door lock according to claim 1, characterized in that: the limiting mechanism is composed of a limiting lug (20) on the central shaft (17) and a limiting column (22) which is arranged on the inner wall of the shell (1) in an up-and-down manner; the limit lug (20) is in intermittent contact connection with the limit column (22) so as toTo pairThe limit bump (20) is used for blocking and limiting.

6. The special integrated motor gear reducer for the full-automatic intelligent door lock according to claim 1, characterized in that: the reset mechanism consists of a torsion spring (16), a spring shifting block (19) and a spring rest (21) arranged on the inner wall of the shell (1); the torsion spring (16) is sleeved on the central shaft (17), and the end heads at the two ends of the torsion spring (16) bypass the spring shifting block (19) and are respectively in contact connection with the two sides of the spring rest (21); the spring rest (21) is a raised rectangular body on the inner wall of the shell (1), and the ends of the two ends of the torsion spring (16) form a clamping state for the spring shifting block (19).

7. The special integrated motor gear reducer for the full-automatic intelligent door lock according to claim 4, characterized in that: the intermittent transmission mechanism consists of a gear shaft (7), a driving gear (8) and a driven gear (9), wherein the driving gear (8) and the driven gear (9) are movably arranged on the gear shaft (7); the driving gear (8) is meshed with the multi-stage reduction gear set, and the driven gear (9) is intermittently meshed with the central shaft gear (14).

8. The special integrated motor gear reducer for the full-automatic intelligent door lock according to claim 7, characterized in that: a fan-shaped driving block (12) is arranged on the end face of one side of the driving gear (8), a meshing groove (10) corresponding to the driving block (12) is arranged on the end face of one side of the driven gear (9), and a driven lug (11) corresponding to the driving block (12) is arranged on the inner wall of the meshing groove (10); the driving gear (8) and the driven gear (9) are intermittently connected with each other through the matching of the driving block (12) and the driven lug (11), the driven gear (9) is meshed with the central shaft gear (14), and the driving gear (8) is meshed with the reduction pinion of the three-stage gear reduction unit (6).

9. The special integrated motor gear reducer for the full-automatic intelligent door lock according to claim 1, characterized in that: one end of the central shaft (17) extends to the outer end of the shell (1); a limiting piece (23) is fixedly arranged at the end head of the central shaft (17) extending to the outer end of the shell (1); a limiting lug (20) is arranged on the limiting sheet (23), a spring shifting block (19) is arranged on the end surface of one side of the limiting lug (20), a torsion spring (16) is sleeved on a central shaft (17) between the limiting sheet (23) and the shell (1), a spring rest (21) corresponding to the torsion spring (16) and two limiting columns (22) are arranged on the outer surface of the shell (1), and the limiting lug (20) is in intermittent contact connection with the limiting columns (22); the spring rest (21) and the two limiting columns (22) are arranged in a triangular shape on the outer surface of the shell (1), and the spring rest (21) is a convex rectangular block; in work, a limiting lug (20) on a limiting sheet (23) and two limiting columns (22) arranged on the outer surface of the shell (1) form a limiting mechanism for limiting the rotating angle of the central shaft (17); the torsion spring (16), the spring shifting block (19) on the limiting sheet (23) and the spring rest (21) on the shell (1) form a reset mechanism for keeping the central shaft (17) to return to the initial position after rotating.

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