CN216788250U - Motor with power-off protection function for electric roller shutter door - Google Patents

Abstract

The utility model provides a motor for an electric roller shutter door with a power-off protection function, which is characterized in that a self-locking module is arranged between an output shaft and a scroll of the motor, the free rotation of the motor end and the rotation of the scroll end, namely the locking effect, are realized through the ingenious mechanical structure design of the self-locking module, the acting force required by braking is small, and a clutch control mechanism is arranged, and the clutch control mechanism controls the disconnection and the recovery of the meshing transmission relationship between the scroll and the self-locking module through the elastic stirring action, so that the manual switch of the roller shutter door under the power-off condition is met, the whole motor has complete control function, the requirements of electric and manual control can be met simultaneously, the motor is convenient to use, and the technical problems that the electromagnetic lock structure is mainly adopted and the manual control cannot be carried out in the prior art are solved.

Description

Motor with power-off protection function for electric roller shutter door

Technical Field

The utility model relates to the technical field of electric rolling door control equipment, in particular to a motor with a power-off protection function for an electric rolling door.

Background

The rolling door is characterized in that a plurality of movable door sheets are connected in series, and an upper door and a lower door rotate in a fixed slideway by taking a scroll above the door as a center. The electric roller shutter door is a common roller shutter door and is widely applied to garages, shops, markets and the like. The automatic switch is controlled by a motor structure. In order to ensure the safety of use, a brake device is usually configured to prevent the roller shutter door from falling in a reverse rotation manner under the action of self gravity to cause danger under the conditions of power failure and the like.

Chinese patent CN201721154819.9 discloses a speed reducing motor with electromagnetic braking function, which comprises a speed reducing motor body with an output shaft and an electromagnetic brake connected with the output shaft, the electromagnetic brake comprises a magnetic yoke, a connecting plate, a brake disc and an armature which are arranged between the magnetic yoke and the connecting plate, the magnetic yoke is connected with the speed reducing motor body through a first screw, the magnetic yoke is connected with the connecting plate through a second screw, a support sleeve is arranged between the connecting plate and the magnetic yoke, the second screw penetrates through the support sleeve, a coil assembly is arranged on the magnetic yoke, the end of the magnetic yoke facing the armature is provided with a spring groove, a compression spring elastically abutted against the armature is arranged in the spring groove, the center hole of the brake disc is fixed with the connecting sleeve, the bottom of the connecting plate is provided with a wire passing hole, the coil assembly is provided with a lead-out wire, and the lead-out wire penetrates out of the wire passing hole.

However, in the prior art, the motor brake usually adopts an electromagnetic lock structure, an electromagnetic brake is connected to an end cover of an input end of the motor, when the power is off, the electromagnetic force disappears, a lining plate of the brake is locked with a brake pad, and a motor shaft stops rotating; and the rolling door can be unlocked only after being electrified, and the rolling door cannot be manually opened and closed under the condition of power failure, so that the use is inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art, and provides a motor for an electric roller shutter door with a power-off protection function.

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

take electric rolling shutter door motor of power-off protection function includes: the self-locking mechanism comprises a driving module, a working module and a self-locking module which is connected and arranged between the driving module and the working module, wherein the self-locking module is connected with a motor output shaft of the driving module; when the driving module actively rotates, the driving module drives the working module to synchronously rotate, and when the working module actively rotates, the driving module drives the self-locking module to be locked in a locking manner so as to limit the working module to continuously rotate.

Preferably, the self-locking module includes: the control unit is coaxially arranged in the shell, and two ends of the control unit are respectively connected with the driving module and the working module; when the driving module rotates, the control unit and the working module are driven to synchronously rotate, and when the working module actively rotates, the control unit and the shell are locked to lock the working module.

Preferably, the housing is provided as a hollow structure, and the control unit includes:

the torsion spring is circumferentially and rotatably arranged in the shell, the head end and the tail end of the torsion spring divide the circumference of the torsion spring, a locking interval is formed between the outer sides of the head end and the tail end, and a rotating interval is formed between the inner sides of the head end and the tail end;

further comprising: a limiting module; when the limiting module rotates in the locking interval, the torsion spring is expanded outwards to be abutted against the inner wall of the shell, so that the limiting module stops rotating continuously; when the limiting module rotates in the rotating interval, the torsion spring is driven to rotate synchronously.

Preferably, the limiting module comprises: the locking mechanism and the rotating mechanism are arranged at two ends of the shell in the axial direction in a corresponding circumferential rotating mode, the locking mechanism is clamped in the locking interval, and the rotating mechanism is clamped in the rotating interval.

Preferably, the locking mechanism comprises a locking part clamped in the locking interval; when the locking part rotates forwards and backwards, the locking part can be abutted against the head end or the tail end of the torsion spring so as to enable the torsion spring to expand outwards to be abutted against the inner wall of the shell, and the locking mechanism stops rotating;

the rotating mechanism comprises a rotating part which is limited and clamped in the rotating interval; when the rotating part rotates forwards and backwards, the rotating part can be abutted against the head end or the tail end of the torsion spring so as to drive the torsion spring and the locking mechanism to rotate synchronously.

Preferably, the circumferential dimension of the locking interval is slightly larger than that of a single locking part, so that the locking part and the head and tail ends of the torsion spring are in clearance fit;

the circumferential dimension of the rotating interval is slightly larger than the sum of the circumferential dimensions of the rotating part and the single locking part, so that the rotating part and the head and tail ends of the torsion spring are in clearance fit.

Preferably, the two ends of the torsion spring extend towards the center thereof with a head abutting edge and a tail abutting edge which can abut against the locking mechanism or the rotating mechanism.

Preferably, the driving module includes: the shell is fixedly arranged relative to an output shaft of the motor, and one end of the control unit is coaxially connected with the output shaft;

the work module includes: and the reel is arranged on the motor base and driven by the motor to rotate, and the reel is in meshing transmission connection with the other end of the control unit relative to the output shaft.

Preferably, the motor base is further provided with a clutch control mechanism, and the clutch control mechanism controls disconnection and restoration of the meshing transmission relationship between the reel and the control unit through elastic stirring action.

The utility model has the beneficial effects that:

(1) according to the utility model, the self-locking module is arranged between the output shaft of the motor and the scroll, the free rotation of the motor end and the rotation of the scroll end, namely the locking effect, are realized through the ingenious mechanical structure design of the self-locking module, the safety is good, the acting force required by braking is small, and the clutch control mechanism is arranged to control the disconnection and recovery of the meshing transmission relationship between the scroll and the self-locking module, so that the manual switch of the roller shutter door under the condition of power failure is met, the control function of the whole motor is complete, the requirements of electric and manual control can be met simultaneously, and the use is convenient;

(2) the self-locking module adopts a pure mechanical lock structure, a torsion spring is arranged in a shell, the circumference of the shell is divided into a locking interval and a rotating interval by the head end and the tail end of the torsion spring, and a locking mechanism and a rotating mechanism which are correspondingly clamped in the two intervals of the torsion spring are rotatably arranged at the two axial ends of the shell, wherein the locking mechanism is connected with a reel end, the rotating mechanism is connected with a motor end, and the torsion spring is enabled to expand outwards to be locked with the inner wall of the shell when the locking mechanism rotates, so that the reel stops rotating, and self-locking is realized; when the rotating mechanism rotates, the torsion spring and the locking mechanism are pushed to synchronously rotate, so that the reel rotates, and the structure is ingenious;

(3) the clutch control mechanism adopts a disengaging shifting sheet with a lever structure, one end of the disengaging shifting sheet is abutted to a first gear in a gear transmission module, the other end of the disengaging shifting sheet is connected with a brake cable, the first gear is disconnected from a meshing transmission relation by pulling the brake cable, so that the rolling door can be manually pushed and pulled from the end of a winding shaft to realize manual opening and closing, an elastic piece is arranged to drive the first gear to recover the meshing transmission relation after the brake cable is loosened, and then the electric control mode is switched.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a first schematic view of an installation structure of a self-locking module and a motor according to the present invention;

FIG. 3 is a schematic view of a second installation structure of the self-locking module and the motor according to the present invention;

FIG. 4 is a cross-sectional view of the self-locking module of the present invention;

FIG. 5 is a schematic longitudinal sectional view of the self-locking module of the present invention;

FIG. 6 is a schematic front view of the torsion spring of the present invention;

FIG. 7 is a schematic view of the locking mechanism of the present invention;

FIG. 8 is a schematic structural view of a rotating mechanism according to the present invention;

FIG. 9 is a schematic view of the connection structure of the torsion spring and the locking mechanism according to the present invention;

FIG. 10 is a partial schematic view of the present invention;

FIG. 11 is an enlarged view taken at A in FIG. 10;

FIG. 12 is a front view of the motor drive structure of the present invention;

FIG. 13 is a cross-sectional view taken at B in FIG. 12;

fig. 14 is a schematic view of the state that the rotating mechanism of the present invention rotates to abut against the torsion spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Example one

As shown in fig. 1-2, the motor for the electric rolling shutter door with the power-off protection function includes: the device comprises a driving module 1 ', a working module 2 ' and a self-locking module 30 which is connected and arranged between the driving module 1 ' and the working module 2 ', wherein the self-locking module 30 is connected with a motor output shaft of the driving module 1 '; when the driving module 1 'actively rotates, the working module 2' is driven to synchronously rotate, and when the working module 2 'actively rotates, the internal locking of the self-locking module 30 is driven to limit the working module 2' to continuously rotate.

Preferably, the self-locking module 30 includes: the device comprises a shell 3 and a control unit 40 coaxially arranged in the shell 3, wherein two ends of the control unit 40 are respectively connected with a driving module 1 'and a working module 2'; when the driving module 1 'rotates, the control unit 40 and the working module 2' are driven to synchronously rotate, and when the working module 2 'actively rotates, the control unit 40 and the shell 3 are locked to lock the working module 2'.

Preferably, the drive module 1' comprises: the motor 2 is mounted on the motor base 1, the housing 3 is fixedly arranged relative to an output shaft 21 of the motor 2, and one end of the control unit 40 is coaxially connected with the output shaft 21; the working module 2' comprises: and a reel 7 which is arranged on the motor base 1 and is driven by the motor 2 to rotate.

In this embodiment, by installing the self-locking module 30 between the motor 2 and the reel 7, the self-locking module 30 adopts a pure mechanical structure, and the ingenious structural design thereof can realize: the active rotation of the motor 2 can drive the scroll 7 to rotate, so that the automatic lifting of the roller shutter door on the scroll 7 is controlled; once the reel 7 actively rotates, the self-locking module 30 can be locked inside and cannot continuously rotate immediately when the reel rotates, so that the danger caused by falling of the rolling door under the action of the gravity of the rolling door under the conditions of power failure and the like is prevented, and the safety of the whole electric control device is good.

Furthermore, it should be noted that, compared to the structure in the prior art in which the electromagnetic lock is installed at the input end of the motor, the self-locking module 30 in this embodiment is installed on the output shaft 21 of the motor 2, and adopts a purely mechanical fitting structure, and the acting force required for braking is smaller.

It should be added that, as shown in fig. 3, the motor 2 is fixedly mounted on the motor base 1 through a motor front cover 22, an installation groove 23 is formed in the motor front cover 22, and the housing 3 is fixedly mounted in the installation groove 23.

Preferably, as shown in fig. 4 to 5, the housing 3 is provided as a hollow structure, and the control unit 40 includes:

the torsion spring 4 is circumferentially and rotatably arranged in the housing 3, as shown in fig. 6, the front end and the rear end of the torsion spring 4 divide the circumference of the torsion spring 4, a locking section 401 is formed between the outer sides of the front end and the rear end, and a rotating section 402 is formed between the inner sides of the front end and the rear end;

further comprising: a limiting module 30'; when the limiting module 30 'rotates in the locking region 401, the torsion spring 4 is expanded outwards to be in contact with the inner wall of the housing 3, so that the limiting module 30' stops rotating continuously; when the limiting module 30' rotates in the rotation interval 402, the torsion spring 4 is driven to rotate synchronously.

Preferably, the limiting module 30' includes: correspond circumferential direction set up in locking mechanical system 5 and slewing mechanism 6 at casing 3 axial direction both ends, the spacing card of locking mechanical system 5 is located in locking interval 401, the spacing card of slewing mechanism 6 is located in slewing interval 402. The rotating mechanism 6 is connected with the output shaft 21; the locking mechanism 5 is connected to the reel 7 by means of a transmission module.

It should be noted that, under the condition that the torsion spring 4 is placed in the housing 3, a thrust is given to the head end or the tail end of the torsion spring 4 in the locking region 401 along the circumferential direction of the torsion spring 4, that is, when the locking mechanism 5 is rotated, the torsion spring 4 is expanded outwards, and when the expansion is large enough to interfere with the inner wall of the housing 3, the torsion spring 4 cannot continue to rotate, that is, the locking is performed; in the rotation interval 402, a thrust is applied to the head end or the tail end of the torsion spring 4 along the circumferential direction of the torsion spring, that is, when the rotation mechanism 6 is rotated, the torsion spring 4 can rotate in the housing 3 without resistance; therefore, the self-locking module 30 of the embodiment can realize the locking effect of free rotation of the motor end and rotation of the reel end, and has the advantages of ingenious structure and good instant self-locking effect during power failure reversal.

Preferably, as shown in fig. 4, the locking mechanism 5 includes a locking portion 50 that is engaged with the locking section 401; when the lock portion 50 rotates forward or backward, it can abut against the leading end or the trailing end of the torsion spring 4, so that the torsion spring 4 expands outward to abut against the inner wall of the housing 3, and the lock mechanism 5 stops rotating.

In the embodiment, when the motor 2 controls the rolling door to be powered off in the descending process, the reel 7 falls under the action of self gravity, and the locking part 50 is driven to rotate positively at the moment, so that the torsion spring 4 is expanded to realize self-locking, and the conditions of crushing injury and the like caused by falling of the door curtain are prevented; when the motor 2 controls the roller shutter door to be powered off in the ascending process, if the roller shutter door is pushed by external force to continuously ascend, the locking part 50 is driven to rotate reversely at the moment, so that the torsion spring 4 is expanded to realize self-locking; prevent the door curtain from being opened by manpower and has the anti-theft function.

Preferably, the rotating mechanism 6 includes a rotating part 60 that is clamped in the rotating section 402; when the rotating portion 60 rotates forward or backward, it can contact with the head end or the tail end of the torsion spring 4 to drive the torsion spring 4 and the locking mechanism 5 to rotate synchronously.

It should be noted that the thicknesses of the locking portion 50 and the rotating portion 60 are both matched with the height difference between the head end and the tail end of the torsion spring 4, so as to ensure that the locking portion 50 and the rotating portion 60 can be abutted against the head end or the tail end of the torsion spring when rotating forward or reversely.

Preferably, the circumferential dimension of the locking section 401 is slightly larger than that of a single locking part 50, so that the locking part 50 is in clearance fit with the two ends of the torsion spring 4; the circumferential dimension of the rotating section 402 is slightly larger than the sum of the circumferential dimensions of the rotating part 60 and the single locking part 50, so that the rotating part 60 is in clearance fit with the two ends of the torsion spring 4.

In this embodiment, the clearance between the locking portion 50/rotating portion 60 and the two ends of the torsion spring 4 is about 1.5mm, so that there is a slight rotation process before self-locking, and the service life of the self-locking structure is prevented from being reduced due to instantaneous self-locking braking.

Preferably, as shown in fig. 7, the lock mechanism 5 further includes: a locking disk 51 fitted in the housing 3, the locking portion 50 being provided on an inner surface of the locking disk 51.

Preferably, as shown in fig. 8, the rotating mechanism 6 further includes: a rotary disk 61 fitted in the housing 3, the rotary portion 60 being provided on an inner surface of the rotary disk 61.

Preferably, as shown in fig. 9, the torsion spring 4 has a head abutting edge 41 and a tail abutting edge 42 extending from the head end and the tail end thereof toward the center thereof, respectively, and abutting against the locking mechanism 5 or the rotating mechanism 6.

Preferably, the locking portion 50 and the rotating portion 60 are each formed in a fan shape to be fittingly abutted against the head abutting edge 41 and the tail abutting edge 42, so as to apply a force in the circumferential direction of the torsion spring 4.

Preferably, an engaging portion 10 for axially restricting the lock mechanism 5 and the rotation mechanism 5 is provided on an inner wall of the housing 3.

In the present embodiment, the lock disk 51 and the rotating disk 61 are axially restricted and axially rotatably mounted in the engaging portion 10, thereby increasing structural stability.

Example two

The same or corresponding parts of this embodiment as those of the above embodiment are designated by the same reference numerals as those of the above embodiment, and only the points different from the above embodiment will be described below for the sake of convenience. This embodiment differs from the above embodiment in that:

preferably, as shown in fig. 10, the control unit 40 is in transmission connection with the reel 7 through a gear transmission module 90; as shown in fig. 11, the gear transmission module 90 includes: the winding device comprises a connecting shaft 91 driven by the control unit 40 to rotate, a first gear 92 driven by the connecting shaft 91 to rotate, and a gear set 93 in meshed connection with the first gear 92, wherein the output end of the gear set 93 is in meshed connection with the winding shaft 7.

In this embodiment, the motor 2 is installed on one side of the motor base 1, the reel 7 is installed on the other side of the motor base 1, and the gear transmission module 90 is located on the same side of the reel 7.

Preferably, as shown in fig. 10, the gear set 93 includes: the winding shaft is characterized in that a second gear 94 rotatably mounted on the motor base 1, a rotating shaft 95 rotatably mounted on the motor base 1, a third gear 96 and a fourth gear 97 coaxially and fixedly mounted on the rotating shaft 95 are arranged, the second gear 94 is meshed with the first gear 92 and the third gear 95, a toothed ring 71 is arranged on the inner ring of the winding shaft 7, and the fourth gear 97 is meshed with the toothed ring 71.

Preferably, as shown in fig. 12, the gear transmission module 90 further includes: and the planetary disk structure 8 is meshed and connected with the control unit 40, and the output end of the planetary disk structure 8 is coaxially connected with the connecting shaft 91.

In this embodiment, the connection shaft 91 is connected to the planetary disk structure 8 through the motor base 1 by rotating through a bearing sleeve.

Preferably, as shown in fig. 7 and 13, the lock mechanism 5 further includes: a gear 52, wherein the gear 52 is arranged on the outer surface of the locking disc 51, and the gear 52 is in meshed transmission connection with the planetary disc structure 8.

EXAMPLE III

The same or corresponding parts of this embodiment as those of the above embodiment are designated by the same reference numerals as those of the above embodiment, and only the points different from the above embodiment will be described below for the sake of convenience. This embodiment differs from the above embodiment in that:

preferably, the reel 7 is in meshing transmission connection with the other end of the control unit 40 opposite to the output shaft 21.

Preferably, as shown in fig. 11, a clutch control mechanism 8 is further disposed on the motor base 1, and the clutch control mechanism 8 controls the disconnection and restoration of the meshing transmission relationship between the reel 7 and the control unit 40 through an elastic toggle action.

In the motor control structure of this embodiment, the cooperation is provided with separation and reunion control mechanism 8 and controls the disconnection and the recovery of meshing transmission relation between spool 7 and the self-locking module 30 to satisfy the manual switch of rolling slats door under the outage condition, whole motor control structure function is complete, can satisfy electronic and manual control demand, convenient to use simultaneously.

Preferably, the first gear 92 is coaxially sleeved on the connecting shaft 91 and can move along the axial direction of the connecting shaft 91.

Preferably, the clutch control mechanism 8 includes: the brake cable comprises a disengagement shifting piece 81 and a brake cable 82, wherein the disengagement shifting piece 81 is mounted on the motor base 1 in a hinged mode, the brake cable 82 is connected with one end of the disengagement shifting piece 81, the other end of the disengagement shifting piece 81 is abutted to one end face of the first gear 92, and when the brake cable 82 is pulled, the disengagement shifting piece 81 pushes the first gear 92 to be disengaged from the gear set 93.

Preferably, the clutch control mechanism 8 further includes: the elastic member 83 is sleeved on the connecting shaft 91 in a limiting manner, the elastic member 83 abuts against the other end face of the first gear 92, and the elastic member 83 pushes the first gear 92 and the gear set 93 to restore meshing connection through elastic action.

In this embodiment, the clutch control mechanism 8 adopts a lever structure and an elastic reset principle in combination, when the brake cable 82 is pulled, the disengagement shifting piece 81 is enabled to push the first gear 92 to displace on the connecting shaft 91, so as to break the meshed connection relationship between the first gear 92 and the second gear 94, so as to manually push and pull the roller shutter door from the reel end to realize manual opening and closing, at the moment, the elastic part 83 is compressed, when the brake cable 82 is loosened, the elastic part 83 elastically returns, so as to push the first gear 92 to recover the meshed connection relationship with the second gear 94, and further switch to the electric control mode, the structure is simple, and the clutch control effect is good.

Example four

An operation method of a motor with a power-off protection function for an electric roller shutter door comprises the following steps:

a, rotation action: when the motor 2 rotates actively, the control unit 40 is driven to rotate synchronously;

in the process of this action, when the output shaft 21 rotates in the forward and reverse directions, the rotating portion 60 is driven to rotate synchronously, and then the rotating portion abuts against the head abutting edge 41 and the tail abutting edge 42, and at this time, the torsion spring 4 and the locking mechanism 5 can be driven to rotate synchronously, and then the gear transmission module 90 and the scroll 7 are driven to rotate, so that the electric control lifting of the roller shutter door is realized.

Further comprising:

b, self-locking action: when the control unit 40 actively rotates relative to the other end of the motor 2, the control unit is locked with the shell 3 to perform rotation self-locking.

In the process of this action, if after the sudden power failure, the rolling slats door on the reel 7 drops or is manually pushed under the action of gravity, the reel 7 is driven to rotate, and then the locking part 50 is driven to rotate positively and negatively through transmission, and then the first abutting edge 41 and the tail abutting edge 42 are abutted, so that the torsion spring 4 is expanded outwards to abut against the inner wall of the shell 3, and the locking mechanism 5 is locked, and the rolling slats door is locked in a state under the power failure.

C, clutch control action:

when the brake cable 82 of the clutch control mechanism 8 is pulled, the first gear 92 is pushed to displace, so that the meshing transmission relationship between the reel 7 and the control unit 40 is disconnected, and the elastic member 83 is compressed;

in the action process, the disengagement shifting piece 81 rotates and pushes the first gear 92 to displace on the connecting shaft 91, so that the meshing connection relationship between the first gear 92 and the second gear 94 is disconnected, the manual mode is switched, and the roller shutter door can be manually pushed and pulled from the reel end to realize manual opening and closing.

When the brake cable 82 is released, the first gear 92 is automatically reset under the elastic action of the clutch control mechanism 8, so that the meshing transmission relationship between the winding shaft 7 and the control unit 40 is restored.

During this action, the elastic member 83 elastically returns to push the first gear 92 to restore the meshing connection with the second gear 94, thereby switching to the electric mode.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. Take power-off protection function's motor for electric rolling shutter door, its characterized in that includes:

a drive module (1'),

an operating module (2'), and

and the self-locking module (30) is connected and arranged between the driving module (1 ') and the working module (2 '), and the self-locking module (30) is connected with the motor output shaft of the driving module (1 ').

2. The motor for electric roller shutter door with power-off protection function as claimed in claim 1, wherein the driving module (1 ') is configured to drive the working module (2 ') to rotate synchronously when the driving module (1 ') rotates actively, and the working module (2 ') is configured to drive the self-locking module (30) to lock and lock the interior thereof when the driving module rotates actively, so as to limit the working module (2 ') to rotate continuously.

3. The motor for electric rolling shutter door with power-off protection function according to claim 1, characterized in that said self-locking module (30) comprises:

a housing (3), and

the control unit (40) is coaxially arranged in the shell (3), and two ends of the control unit (40) are respectively connected with the driving module (1 ') and the working module (2');

when the driving module (1 ') rotates, the control unit (40) and the working module (2') are driven to synchronously rotate, and when the working module (2 ') actively rotates, the control unit (40) and the shell (3) are locked to lock the working module (2').

4. The motor for electric rolling shutter door with power-off protection function according to claim 3,

the housing (3) is provided as a hollow structure, and the control unit (40) includes:

the torsion spring (4) is arranged in the shell (3) in a circumferential rotating mode, the head end and the tail end of the torsion spring (4) separate the circumference of the torsion spring (4), a locking section (401) is formed between the outer sides of the head end and the tail end, and a rotating section (402) is formed between the inner sides of the head end and the tail end;

further comprising: a limiting module (30');

when the limiting module (30 ') rotates in the locking area (401), the torsion spring (4) is expanded outwards to be abutted against the inner wall of the shell (3) so that the limiting module (30') stops continuing to rotate; when the limiting module (30') rotates in the rotating interval (402), the torsion spring (4) is driven to rotate synchronously.

5. The motor for electric rolling shutter door with power-off protection according to claim 4, wherein said limit module (30') comprises:

correspond circumferential direction set up in locking mechanical system (5) and slewing mechanism (6) at casing (3) axial direction both ends, the spacing card of locking mechanical system (5) is located in locking interval (401), the spacing card of slewing mechanism (6) is located in slewing interval (402).

6. The motor for electromotive roller shutter door with power-off protection according to claim 5,

the locking mechanism (5) comprises a locking part (50) which is limited and clamped in the locking interval (401); when the locking part (50) rotates forwards and backwards, the locking part can be abutted against the head end or the tail end of the torsion spring (4) so that the torsion spring (4) expands outwards to abut against the inner wall of the shell (3) and the locking mechanism (5) stops rotating;

the rotating mechanism (6) comprises a rotating part (60) which is limited and clamped in the rotating interval (402); when the rotating part (60) rotates forwards and backwards, the rotating part can be abutted against the head end or the tail end of the torsion spring (4) so as to drive the torsion spring (4) and the locking mechanism (5) to rotate synchronously.

7. The motor for electric rolling shutter door with power-off protection function according to claim 6,

the circumferential dimension of the locking interval (401) is slightly larger than that of a single locking part (50), so that the locking part (50) is in clearance fit with the head end and the tail end of the torsion spring (4);

the circumferential dimension of the rotating section (402) is slightly larger than the sum of the circumferential dimensions of the rotating part (60) and the single locking part (50), so that the rotating part (60) is in clearance fit with the head end and the tail end of the torsion spring (4).

8. The motor with power-off protection function for electric roller shutter door as claimed in claim 5, wherein the torsion spring (4) has an end-to-end extending toward the center thereof with an end-to-end abutting edge (41) and a tail-to-end abutting edge (42) that are capable of abutting against the locking mechanism (5) or the rotating mechanism (6).

9. The motor for electric rolling shutter door with power-off protection function according to claim 3,

the drive module (1') comprises:

the motor (2) is mounted on the motor base (1), the shell (3) is fixedly arranged relative to an output shaft (21) of the motor (2), and one end of the control unit (40) is coaxially connected with the output shaft (21);

the working module (2') comprises:

a scroll (7) which is arranged on the motor base (1) and is driven by the motor (2) to rotate,

the reel (7) is in meshed transmission connection with the other end, opposite to the output shaft (21), of the control unit (40).

10. The motor for electric roller shutter door with power-off protection function according to claim 1, characterized in that the driving module (1 ') is further provided with a clutch control mechanism (8), and the clutch control mechanism (8) controls the disconnection and restoration of the transmission relationship between the working module (2') and the self-locking module (30) through elastic stirring action.

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