CN211093269U

CN211093269U - Electric curtain

Info

Publication number: CN211093269U
Application number: CN201920806422.6U
Authority: CN
Inventors: 孙勇; 俞锡鹏; 汪冰; 翁建君
Original assignee: Ningbo Dooya Mechanic and Electronic Technology Co Ltd
Current assignee: Ningbo Dooya Mechanic and Electronic Technology Co Ltd
Priority date: 2019-05-30
Filing date: 2019-05-30
Publication date: 2020-07-28
Anticipated expiration: 2029-05-30

Abstract

The utility model discloses an electric window curtain, including track subassembly, drive arrangement and final drive, the track subassembly includes two tracks that set up side by side, is used for the annular belt of being connected with the both sides curtain cloth of (window) curtain respectively, is provided with a belt in every track, drive arrangement includes actuating mechanism, actuating mechanism includes the motor, final drive sets up the one end outside on orbital length direction, final drive includes two driving pulley, and every belt is around establishing on one of them driving pulley, its characterized in that: the driving mechanism further comprises two output ends driven by the motor and having opposite rotating directions, the driving device further comprises a clutch device, the clutch device comprises two clutch transmission mechanisms which are independently controlled, the input end of each clutch transmission mechanism is connected with one of the output ends of the driving mechanism, and the output end of each clutch transmission mechanism is connected with one of the driving belt pulleys so as to drive the driving belt pulley to rotate.

Description

Electric curtain

Technical Field

The utility model relates to a curtain, in particular to an electric curtain.

Background

The existing electric curtain generally adopts a driving box to drive a transmission belt in a track, so as to drive a suspension arm and a suspension wheel to slide in the track, and realize the opening and closing of the curtain.

Most curtains approach to each other at two sides simultaneously to realize closing, are symmetrical and attractive, have small running distance, and are arranged at two opposite positions on a belt ring in a track according to the principle of realizing moving tracks with the same speed and opposite directions. The utility model discloses an do not receive length restriction and but on-the-spot equipment's electronic remote control curtain track that opens and shuts of chinese patent application No. 201310549457.3, be equipped with the track groove in the track shell, the cutting can insert track inslot sliding fit, be equipped with the race of tooth in the cutting and get the electric steel band groove, the race of tooth can insert the race of tooth respectively with getting the electric steel band and get electric steel band inslot sliding fit, be equipped with in track shell both ends head and get the spacing briquetting assembly of electricity, be equipped with the spacing briquetting assembly of intermediate power supply in the middle of the track shell, install the walking motor in the track shell, install the gear on the walking motor, gear and race meshing transmission, install flexible electricity probe of getting on the walking motor, the walking motor.

The design ensures that the driving mechanism must simultaneously control the curtains on two sides to move simultaneously when in operation, and the independent opening and closing of the curtain on one side cannot be realized.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to the problem that above-mentioned prior art exists, provide an electric window curtain, can realize that unilateral (window) curtain independently opens and shuts with less occupation space.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides an electric curtain, includes track subassembly, drive arrangement and final drive, the track subassembly includes two tracks that set up side by side, is used for the annular belt of being connected with the both sides curtain cloth of (window) curtain respectively, is provided with a belt in every track, drive arrangement includes actuating mechanism, actuating mechanism includes the motor, final drive sets up the one end outside on orbital length direction, final drive includes two drive pulley, and every belt is around establishing on one of them drive pulley, its characterized in that: the driving mechanism further comprises two output ends driven by the motor and having opposite rotating directions, the driving device further comprises a clutch device, the clutch device comprises two clutch transmission mechanisms which are independently controlled, the input end of one clutch transmission mechanism is connected with one output end of the driving mechanism, the output end of the one clutch transmission mechanism is connected with one driving belt pulley and can drive the driving belt pulley to rotate, the input end of the other clutch transmission mechanism is connected with the other output end of the driving mechanism, and the output end of the other clutch transmission mechanism is connected with the other driving belt pulley and can drive the driving belt pulley to rotate.

According to an aspect of the present invention, the rail assembly further includes a mounting bracket for mounting two rails and an external mounting base, the mounting bracket includes a side mounting plate, two connecting blocks respectively cooperating with the two rails, the side mounting plate includes a top plate and a mounting plate spanning above the two rails, the mounting plate is disposed below one end of the top plate to form an L-type side mounting plate, the mounting plate is disposed on one of the rails and away from the other rail, a clamping groove is formed in each of the top sides of each of the rails toward the middle, each of the connecting blocks includes a first connecting plate and a second connecting plate, the first connecting plate is disposed between the top and the top plate of the corresponding rail and connected to the top plate, a first buckle extending downward and used for being engaged with the clamping groove on one side of the corresponding rail is disposed at one end of the first connecting plate, the second connecting plate is disposed below the other side of the first connecting plate which is disposed outside the corresponding rail, the second connecting plate is rotatably connected to the first connecting plate through a longitudinally extending screw and is lockable, and one end of the second connecting plate is disposed with the clamping groove of the corresponding rail.

According to another aspect of the utility model, the track subassembly is still including the installing support that is used for installing two tracks and outside installation basis, the installing support include respectively with two track complex connecting blocks, orbital top both sides are formed with the draw-in groove to the undercut respectively, and every connecting block includes first connecting plate and second connecting plate, first connecting plate sets up between corresponding orbital top and roof and is connected with the roof, the one end of first connecting plate is provided with downwardly extending, is used for the first buckle with the draw-in groove block of corresponding track one side, first connecting plate extends to outside the corresponding track from corresponding track top, the second connecting plate sets up the below that the first connecting plate is located the part outside the corresponding track, the second connecting plate rotates with first connecting plate through the screw of vertical extension to be connected, And can lock, the one end of second connecting plate is provided with the second buckle that is used for with the draw-in groove block of corresponding track opposite side, and two first connecting plates interconnect.

Preferably, the driving mechanism is structured such that the driving mechanism includes a motor, a main gear disposed on an output shaft of the motor, and two pinions disposed at two sides of the main gear, the two pinions are respectively engaged with the driving wheel, and the pinions are output ends of the driving mechanism and respectively connected with the corresponding clutch transmission mechanisms.

In order to facilitate the independent control of the clutch transmission mechanisms, each clutch transmission mechanism comprises a transmission shaft rotating synchronously with the input end, a connecting sleeve rotating synchronously with the transmission shaft and an electromagnetic clutch device for driving the input end to act, the connecting sleeves are the output ends of the clutch transmission mechanisms, the connecting sleeve of one clutch transmission mechanism is connected with a first driving belt pulley, the connecting sleeve of the other clutch transmission mechanism is connected with a second driving belt pulley, and the input end can be driven by the electromagnetic clutch device to be in a first position where the input end is separated from an auxiliary gear and a second position where the input end is forced to move and is connected with the auxiliary gear to rotate synchronously; the electromagnetic clutch devices of the two clutch transmission mechanisms are mutually independent.

According to the utility model discloses an aspect, separation and reunion drive mechanism's input is for being located the clutch gear of pinion below, electromagnetic clutch device is including the separation and reunion piece that can move up when the circular telegram, clutch gear is connected with the separation and reunion piece, the separation and reunion piece keeps the downward movement trend.

Preferably, in order to facilitate the clutch gear to be engaged with or disengaged from the pinion gear when the clutch gear is lifted, internal teeth are formed on an inner peripheral wall of the pinion gear, the internal teeth are formed by radially outwardly recessing the inner peripheral wall of the pinion gear, and are formed in a hollow shape, and external teeth protruding outward are formed on an outer peripheral wall of the clutch gear, and the external teeth are inserted into corresponding internal teeth to be engaged with each other.

In order to facilitate the engagement of the clutch gear with the pinion gear when the clutch gear is raised and avoid the abutment therebetween in the longitudinal direction, the bottom end of each internal tooth has a first guide surface inclined inward and gradually upward from the outer periphery, and the top end of each external tooth has a second guide surface inclined inward and gradually upward from the outer periphery.

In order to avoid that the pinion and the clutch gear are locked and can not be separated, a certain clearance is arranged between the radial outer side end of each external tooth and the radial outer side end of the corresponding internal tooth.

Compared with the prior art, the electromagnetic clutch device of the electromagnetic clutch device has the advantages that: the clutch mechanisms which are respectively connected with the driving mechanism and the belt and are independently controlled are arranged, and the controller is used for controlling the independent on-off of the clutch mechanisms, so that the single motor can control the double-track electric curtains to jointly or independently open and close, the driving box and the transmission box are small in overall size and simple to install, and extra wiring and more controllers are avoided; the double-track mounting and dismounting are realized through the mounting bracket, the parallelism between the double tracks can be ensured without measuring during mounting, the mounting steps are reduced, and the mounting convenience is improved.

Drawings

FIG. 1 is a schematic view of a first embodiment of a motorized window treatment of the present invention;

fig. 2 is an exploded view of the first embodiment of the motorized window shade of the present invention;

fig. 3 is an exploded view of the track assembly of the first embodiment of the motorized window treatment of the present invention;

fig. 4 is an exploded view of the first embodiment of the driving device of the motorized window shade according to the present invention;

fig. 5 is a sectional view of a first embodiment of a driving device and a main transmission device of the motorized window treatment of the present invention;

FIG. 6 is an enlarged view of a portion I of FIG. 5;

FIG. 7 is an enlarged view of portion II of FIG. 5;

fig. 8 is a schematic view of a part of a clutch transmission mechanism according to a first embodiment of the driving device of the present invention;

fig. 9 is an exploded view of a part of a clutch transmission mechanism according to a first embodiment of the driving device of the present invention;

FIG. 10 is a schematic view of a second embodiment of the motorized window treatment of the present invention;

fig. 11 is an exploded view of a track assembly of a second embodiment of the motorized window treatment of the present invention;

fig. 12 is a partial schematic view of a second embodiment of the driving device of the motorized window treatment of the present invention;

FIG. 13 is a cross-sectional view of the drive of FIG. 12;

FIG. 14 is an exploded view of the drive assembly of FIG. 12 (hidden housing);

FIG. 15 is a schematic view of a pinion of the drive of FIG. 12;

fig. 16 is a schematic view of a clutch gear of the drive of fig. 12.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

Example one

Referring to fig. 1 to 3, a motorized window shade includes a rail assembly 1, a driving device 2, a main transmission device 3, and a sub-transmission device 4.

The track assembly 1 comprises a track 11, a belt 12, a boom 13 connected to the belt 12, and a hanging wheel 14. The belt 12 is endless.

The rails 11 comprise two, two rails 11 being arranged laterally side by side and parallel to each other, seen in fig. 1 as front and rear side by side. The above-mentioned belt 12 is disposed in each track 11. Each rail 11 is hollow and includes a notch 111 at the bottom, the notch 111 extending along the length direction of the rail 11 for allowing the upper portion of the hanging wheel 14 to be caught in the rail 11 through the notch 111 and to be moved along the length direction of the rail 11, and the structure of the hanging wheel 14 engaged with the rail 11 is the same as the prior art. The accommodating grooves 112 are respectively formed in the rail 11 and at two sides of the notch 111, the accommodating groove 112 at each side extends along the length direction of the rail 11, and two layers of the annular belt 12 (the belt 12 is in an annular shape and is naturally extruded into two parallel layers when being extruded into the rail 11) are respectively arranged in the corresponding accommodating grooves 112. The structure of the belt 12 and the rail 11 is also the same as the prior art.

The track assembly 1 is mounted to an external mounting base by mounting brackets 15. in this embodiment, the track assembly 1 is side-mounted, i.e. the track assembly 1 is attached to a wall (mounting base) on the side. the mounting brackets 15 may have a plurality and are spaced apart along the length of the track 11. each mounting bracket 15 includes a side mounting plate 151 and two connecting blocks 152. the side mounting plate 151 includes a transversely extending top plate 1511 and a longitudinally extending mounting plate 1512. the mounting plate 1512 is disposed below one end of the top plate 1511. the top plate 1511 and the mounting plate 1512 are integrally formed to form a model L. the top plate 1511 spans over two tracks 11, and the mounting plate 1512 is disposed on the outer side of one of the tracks 11 remote from the other track 11 to secure the track assembly 1 to the wall.

The two connecting blocks 152 are used for connecting and fixing the side mounting plate 151 and the two rails 11 respectively. Each connector block 152 includes a first connector plate 1521 and a second connector plate 1522. The two sides of the top of the rail 11 are recessed towards the middle to form two catching grooves 113, respectively, the two catching grooves 113 are located at both sides of the width direction of the rail 11, and each catching groove 113 extends in the length direction of the rail 11. The first connecting plate 1521 is disposed above the rail 11 and between the top plate 1511, and one end of the first connecting plate 1521 is provided with a first buckle 15211 extending downward for being engaged with the slot 113 on one side of the rail 11. The other end of the first connecting plate 1521 extends from above the rail 11 to the outside of the rail 11, and the first connecting plate 1521 is further connected and fixed with the top plate 1511. The first connecting plate 1521 is located at the outer portion of the track 11, and the second connecting plate 1522 is disposed below the first connecting plate 1521, the second connecting plate 1522 is rotatably connected to the first connecting plate 1521 through a screw 1523, and the screw 1523 extends in the longitudinal direction. One end of the second connecting plate 1522 is provided with a second buckle 15221 for being fastened with the fastening groove 113 on the other side of the rail 11. Two first connecting plates 1521 connected to the outer side of one of the rails 11 and the inner side of the other rail 11, respectively; the two second connecting plates 1522 are connected to the inner side of one of the rails 11 and the outer side of the other rail 11, respectively.

When the installation is carried out, the side installation plate 151 (at this time, the first connecting plate 1521 is connected with the side installation plate 151, and the second connecting plate 1522 is connected with the first connecting plate 1521) is fixed with the wall body; then, the rail 11 is installed, the first buckle 15211 of each first connecting plate 1521 is clamped into the clamping groove 113 on one side of the rail 11, and then the second connecting plate 1522 is rotated to enable the second buckle 15221 to rotate towards the clamping groove 113 on the other side of the rail 11 until the second buckle 15221 is clamped into the clamping groove 113; finally, the screws 1523 are tightened, and the first connecting plate 1521 and the second connecting plate 1522 clamp the track 11.

When the rail is detached, the screw 1523 is loosened, and then the second connecting plate 1522 is turned over to be separated from the rail 11.

The main transmission device 3 and the auxiliary transmission device 4 are respectively disposed outside both ends of the rail 11 in the length direction, the main transmission device 3 includes two driving pulleys 31 respectively engaged with the two belts 12, and the two driving pulleys 31 are arranged at intervals in the transverse direction (in the embodiment, in the front-rear direction). The sub-transmission 4 includes two driven pulleys 41 respectively engaged with the two belts 12, and the two driven pulleys 41 are arranged at a spacing in the lateral direction (in the front-rear direction in this embodiment). The rotation axes of the four pulleys are all longitudinally extended.

Each belt 12 is wound around the corresponding drive pulley 31 and driven pulley 41 to form a closed structure, and can be circularly moved in the transverse direction.

Each belt 12 is connected with a suspension arm 13, and each suspension arm 13 is at least partially positioned below the track 11 so as to facilitate curtain connection. Thus, when the belt 12 moves, the boom 13 is moved. The suspension arm 13 and the suspension wheel 14 on one track 11 are connected with one curtain side curtain of the curtain, and the suspension arm 13 and the suspension wheel 16 on the other track 11 are connected with the other curtain side curtain of the curtain. Therefore, when the suspension arm 13 moves, the curtain cloth on the corresponding side can be driven to move (the curtain cloth on the two sides move towards or away from each other to form an opening curtain), and then the suspension wheel 14 is driven to move.

The main transmission device 3 further includes a first bottom plate 31 and a first cover 34 fastened to the first bottom plate 33, and the driving pulley 31 of the main transmission device 3 is disposed in the first bottom plate 33 and the first cover 34. Similarly, the sub-transmission device 4 further includes a second base plate 43 and a second cover 44 fastened to the second base plate 43, and the driven pulley 41 of the sub-transmission device 4 is disposed in the second base plate 43 and the second cover 44. Both ends of the rail 11 are connected to the first cover 34 and the second cover 44, respectively. In the present embodiment, the sub-transmission device 4 has two second bottom plates 43 and two second covers 44 corresponding to the rails 11, and one sub-transmission gear 41 is disposed between each corresponding second bottom plate 43 and one corresponding cover 44, i.e. the sub-transmission device 4 is a split structure, alternatively, the sub-transmission device 4 may also be an integral structure like the main transmission device 3.

The driving device 2 is arranged below the main transmission device 3, and the driving belt pulley 31 can be driven to rotate through the driving device 2, so that the corresponding belts 12 are driven to move respectively, and the two driven wheels move along with the corresponding belts.

Referring to fig. 4 to 9, the driving device 2 includes a case 21, a top cover 22 disposed on the top of the case 21, a driving mechanism disposed in the case 21, a clutch device 24, and a bottom cover 25 disposed above the top cover 22, the bottom cover 25 and the top cover 22 being used to connect with a first bottom plate 33 of the main transmission 3, thereby connecting the driving device 2 and the main transmission 3. The top cover 22 extends partially into the tank 21. The driving mechanism includes a motor 231, a main gear 232 provided on an output shaft 2311 of the motor 231, and sub-gears 233 located at both sides of the main gear 232 and engaged with each other, respectively, the output shaft 2311 of the motor 231 extending in a longitudinal direction. As shown in fig. 5, the two pinions 233 are respectively disposed at left and right sides of the main gear 232, and when the main gear 232 rotates, the two pinions 232 rotate in opposite directions, so as to drive the two driving pulleys to rotate in opposite directions, thereby moving the two curtains in opposite directions, and the transmission manner between the pinions 233 and the corresponding driving pulleys will be described in detail below.

The clutch device 24 is disposed between the motor 231 and the top cover 22, and includes a housing 241 and two clutch transmission mechanisms 242 having the same structure, wherein one clutch transmission mechanism 242 is connected to one of the driving pulleys 31, and the other clutch transmission mechanism 242 is connected to the other driving pulley 31. The upper portion of the housing 241 is coupled to the lower portion of the top cover 22, the motor 231 is coupled to the bottom of the housing 241, and the output shaft 2311 of the motor 231 extends upward into the housing 241. The first and

second bearings

2312 and 2313 fixed in the housing 241 are respectively sleeved on the top and bottom of the output shaft 2311 of the motor 231 in the housing 241 so as to position the output shaft 2311. The clutch transmission mechanism 242, the main gear 232 and the sub-gear 233 are disposed in the housing 241 (wherein the main gear 232 and the sub-gear 233 are rotatably disposed in the housing 241, and the rotating shafts thereof are both longitudinal). The pinion 233 is peripherally fitted with a third bearing 2333 fixed in the housing 241 to position the pinion 233 for rotation.

The lower portion of the inner circumferential wall of the pinion 233 is preferably provided with first projections 2331 projecting inward near the bottom of the inner circumferential wall, and in this embodiment, the number of the first projections 2331 is four and is arranged uniformly and at intervals in the circumferential direction. The above structure is used for cooperating with the clutch transmission mechanism 242, and the specific cooperation manner will be described in detail below.

The main gear 232 is always engaged with the pinion gears 233, and each pinion gear 233 as an output end of the driving mechanism is engaged with one clutch transmission mechanism 242. Each clutch transmission 242 includes an electromagnetic clutch device 2421, a driving block 2422, a transmission block 2423, a transmission shaft 2424 and a connection sleeve 2425. The electromagnetic clutch device 2421 is fixedly arranged in the shell 241, the driving block 2422 is made of a magnetic material, and the driving block 2422 is arranged above the electromagnetic clutch device 2421 at intervals and is matched with the electromagnetic clutch device 2421 through magnetic attraction. The driving block 2422 is connected with the driving block 2423 so as to move up and down synchronously, in the embodiment, the upper size of the driving block 2422 is smaller than the lower size, the lower size of the driving block 2422 is matched with the electromagnetic clutch device 2421, the upper part of the driving block 2422 penetrates the driving block 2423 upwards, the part of the driving block 2422, which is positioned in the driving block 2423, is sleeved with the clamp spring 2426 at the periphery so as to relatively fix the driving block 2422 and the driving block 2423. When the electromagnetic clutch 2421 is powered on (a coil and an iron core are arranged in the electromagnetic clutch) to generate a magnetic field, the driving block 2421 can be attracted downwards, so that the driving block 2423 synchronously moves downwards.

The transmission block 2423 is used as an input end of the clutch transmission mechanism 242, is arranged inside the pinion 233, and comprises a hollow cylindrical transmission main body 24231 with an open top, and a second lug 24232 which is arranged at the lower part of the outer peripheral wall of the transmission main body 24231 and protrudes outwards. The transmission body 24231 is disposed inside the first protrusion 2331, preferably, the transmission body 24231 and the first protrusion 2331 are spaced apart, and the transmission body 24231 may also contact with the first protrusion 2331, and the friction force of the contact is smaller than the force of the pinion 233 driving the transmission body 24231 to rotate. The second bosses 24232 extend along the circumferential direction of the outer circumferential wall of the transmission body 24231, and in the present embodiment, the second bosses 24232 have two and are symmetrically arranged on the outer circumferential wall of the transmission body 24231. The second protrusion 24232 is used for matching with the first protrusion 2331 of the pinion 233, and the first protrusion 2331 and the second protrusion 24232 are arranged in a staggered manner, that is, the projections of the first protrusion 2331 and the second protrusion 24232 on the horizontal plane are not overlapped, if there is an overlapped part after the installation is completed, the first protrusion 2331 and the second protrusion 24232 can be staggered after the pinion 233 rotates.

When the transmission block 2423 is located at the initial first position, the second protrusion 24232 is located above the first protrusion 2331, i.e., the transmission block 2423 is disengaged from the pinion 233. When the transmission blocks 2423 are moved downward by a distance such that the second protrusions 24232 at least partially overlap with the first protrusions 2331 in the longitudinal direction, two of the first protrusions 2331 abut against the second protrusions 24232 at corresponding positions (end portions in the circumferential direction), so that the transmission blocks 2423 are located at the second position engaged with the pinion 233, thereby driving the transmission blocks 2423 to rotate synchronously when the pinion 233 rotates. The distance between the bottom surface of the driving block 2422 and the top surface of the electromagnetic clutch device 2421 is not less than the distance (distance in the longitudinal direction) between the second protrusion 24232 and the first protrusion 2331, ensuring that the second protrusion 24232 at least partially overlaps with the first protrusion 2331 in the longitudinal direction when the bottom surface of the driving block 2422 and the top surface of the electromagnetic clutch device 2421 are engaged.

In order to keep the driving block 2422 and the transmission block 2423 moving upwards, the driving block 2422 and the transmission block 2423 are arranged above the electromagnetic clutch device 2421 at intervals, and the transmission block 2423 is prevented from moving downwards under the action of gravity, so that the transmission block 2423 and the pinion 233 always keep synchronous rotation. A return spring 2429 is arranged in the electromagnetic clutch device 2421, the bottom of the return spring 2429 abuts against the electromagnetic clutch device 2421, and the top of the return spring 2429 abuts against the bottom of the driving block 2422, so that the driving block 2422 and the transmission block 2423 keep the trend of upward movement.

The bottom of the transmission shaft 2424 is provided with a shaft connecting part 24241, and the shaft connecting part 24241 is cylindrical and is connected with the transmission main body 24231, so that the transmission shaft 2424 can be driven to rotate by the rotation of the transmission block 2423. In the present embodiment, the connection structure is that a third protrusion 24242 protruding outward is provided on the outer circumferential wall of the shaft connecting part 24241, and in the present embodiment, the third protrusion 24242 has two and is symmetrically provided on the outer circumferential wall of the shaft connecting part 24241. The transmission body 24231 has two notches 24233 on the peripheral wall, and preferably, the notches 24233 penetrate through the peripheral wall of the transmission body 24231 in the radial direction. The shaft connecting part 24241 is disposed inside the transmission main body 24231, the transmission shaft 2424 extends upwards to the transmission main body 24231 and the pinion 233, and each third bump 24242 penetrates through the notch 24233 to abut against two side walls on the circumference of the notch 24233, so that when the transmission block 2423 rotates, the transmission shaft 2424 can be driven to rotate. The outer circumference of the driving shaft 2424 is sleeved with a fourth bearing 2427 fixed in the housing 241 so as to position the driving shaft 2424, the fourth bearing 2427 is disposed above the shaft connecting part 24241, and the driving shaft 2424 can be longitudinally limited so as to prevent the shaft connecting part 24241 of the driving shaft 2424 from being separated from the driving block 2423. The shaft connecting part 24241 can longitudinally limit the position of the transmission block 2423, that is, the highest position of the upward movement of the transmission block 2423 is that the bottom surface of the shaft connecting part 24241 is abutted against the inner bottom surface of the transmission main body 24231 of the transmission block 2423.

The bottom of the notch 24233 of the transmission body 24231 protrudes outwards to form a fourth bump 24234, in the present embodiment, the fourth bump 24234 has two symmetrically arranged bumps, and is uniformly and alternately arranged along the circumferential direction of the outer circumferential wall of the transmission body 24231 together with the second bump 24232, and the second bump 24232 and the fourth bump 24234 are alternately arranged, that is, the fourth bump 24234 is adjacent to the second bump 24232, and the second bump 24232 is adjacent to the fourth bump 24234. Similarly, in the initial position, the fourth tab 24234 is positioned above the first tab 2331 of the pinion 233. When the transmission block 2423 moves downwards for a certain distance, the fourth protrusion 24234 at least partially overlaps with the first protrusions 2331 of the pinion 233 in the longitudinal direction, wherein two first protrusions 2331 abut against the corresponding position of the fourth protrusion 24234 (the end portion abuts in the circumferential direction), further ensuring that the rotation of the pinion 233 can drive the rotation of the transmission block 2423.

A connecting sleeve 2425 serving as an output end of the clutch transmission mechanism 242 is arranged at the top of the transmission shaft 2424 and is linked with the transmission shaft 2424. The connecting sleeve 2425 of one of the clutch transmissions 242 is connected to one of the drive pulleys 31 in the main transmission 3, and the connecting sleeve 2425 of the other clutch transmission 242 is connected to the other drive pulley 31 in the main transmission 3. The connection sleeve 2425 and the corresponding driving pulley 31 can be directly connected or can be in transmission connection through a plurality of gears.

The clutch transmission 242 may further include a stroke detecting means, as in the present embodiment, an optical encoder 2428 provided on the transmission shaft 2424, so as to detect the stroke of the motor 231. The clutch device 24 further includes a control circuit board 243 for communicating and controlling the opening and closing of the electromagnetic clutch device 2421 and the operation of the motor 231, so as to realize remote control.

When the motor 231 is operated, an output shaft 2311 thereof drives the main gear 232 to rotate, so that the sub-gear 233 engaged with the main gear 232 rotates. At this time, if the electromagnetic clutch 2421 of the clutch transmission mechanism 242 is opened, that is, the electromagnetic clutch 2421 is powered on, referring to fig. 6, the magnetic attraction force generated by the electromagnetic clutch 2421 will attract the driving block 2422 to downwards attract the electromagnetic clutch 2421, so that the transmission block 2423 connected to the driving block 2422 moves downwards, so that the second protrusion 24232 and the fourth protrusion 24234 are respectively at least partially overlapped with the first protrusion 2331 in the longitudinal direction and abut against the first protrusion in the circumferential direction, the rotation of the pinion 233 can drive the transmission block 2423 to rotate (to realize the "closing" of the clutch action), and further drive the transmission shaft 2424 to rotate, so that the connection sleeve 2425 connected to the transmission shaft 2424 rotates, and the corresponding driving pulley rotates to drive the corresponding belt to move, and finally drive the curtain to move through the corresponding suspension arm and suspension wheel. During this process, return spring 2429 is compressed.

When the electromagnetic clutch 2421 is turned off, that is, the electromagnetic clutch 2421 is powered off, such as in the non-use state when the power supply is cut off or the manual control is turned off, referring to fig. 7, the magnetic attraction force on the driving block 2422 is not generated, at this time, the driving block 2422 is pushed up by the restoring force of the return spring 2429, so that the driving block 2423 connected with the driving block 2422 moves upward, the second protrusion 24232 and the fourth protrusion 24234 are longitudinally staggered from the first protrusion 2331 and do not abut against the first protrusion, and the rotation of the pinion 233 will not drive the driving block 2423 to rotate (to realize the "off" of the clutch effect).

The electromagnetic clutch devices 2421 of the two clutch transmission mechanisms 242 can be independently powered on and powered off, so that the two driving pulleys 31 can be independently operated, and the independent motion control of the single-side curtain cloth can be realized.

When the power is off, the curtain cloth can be manually pulled because the electromagnetic clutch 2421 does not generate magnetic attraction force on the driving block 2422 any more.

Example two

Referring to fig. 10 and 11, in the present embodiment, the difference from the first embodiment is that the rail assembly 1 is of a top mount type, the mounting brackets 15 of the two rails 11 include only two joint blocks 152, and the first joint plates 1521 of the two joint blocks 152 are connected to each other.

EXAMPLE III

Referring to fig. 12 to 16, in the present embodiment, the difference from the first embodiment is that each clutch transmission mechanism 242 uses a clutch gear 2422 'instead of the driving block 2422 and the transmission block 2423, and the transmission shaft 2424 is connected with the clutch gear 2422' to rotate synchronously. The inner peripheral wall of the clutch gear 2422 'is provided with a radially outwardly recessed locking groove 24221' for cooperating with a third bump 24242 at the bottom of the transmission shaft 2424, so that connection is realized and synchronous rotation is realized.

The electromagnetic clutch device 2421 includes, in addition to the above-described return spring 2429, a switch housing 24211 having a coil and an iron core therein, which is energized to generate a magnetic field, and a clutch block 24212 which passes through the switch housing 24211 in a longitudinal direction (which is operated by the magnetic field). A clutch gear 2422 'is disposed above a switch housing 24211 of the electromagnetic clutch device 2421, the bottom of the clutch gear 2422' can be connected with a clutch block 24212 of the electromagnetic clutch device 2421 through a pin or the like, the bottom end of the clutch block 24212 penetrates below the switch housing 24211, and a return spring 2429 abuts between the bottom end of the clutch block 24212 and the bottom of the switch housing 24211, so that the clutch block 24212 keeps a downward movement tendency. A circlip, a step, or the like may be provided at the bottom end of clutch block 24212 to abut against return spring 2429.

Pinion 233 is located above corresponding clutch gear 2422 'and can be engaged with (engaged with) or disengaged from (disengaged from) clutch gear 2422'. The above-mentioned drive shaft 2424 passes upward through the pinion 233. When the electromagnetic clutch device 2421 is powered on, the clutch block 24212 moves upwards to drive the clutch gear 2422' to move upwards to be in the second position to be meshed with the pinion 233, and at the moment, the return spring 2429 is compressed; when electromagnetic clutch 2421 is powered off, clutch block 24212 moves downward under the action of the reset force of reset spring 2429, so as to drive clutch gear 2422' to move downward to be in the first position and disengage from pinion 233.

Inner teeth 2334 are formed on the inner peripheral wall of the pinion 233, the inner teeth 2334 are formed hollow by recessing the inner peripheral wall of the pinion 233 radially outward, and outer teeth 24222 'protruding outward are formed on the outer peripheral wall of the clutch gear 2422' solid. Outer teeth 24222' may be inserted into inner teeth 2334. In order to facilitate the engagement of the clutch gear 2422 ' with the pinion 233 when it rises and avoid the abutment therebetween in the longitudinal direction, the bottom end of each inner tooth 2334 has a first guide surface 2335 inclined gradually upward from the outer periphery, and the top end of each outer tooth 24222 ' has a second guide surface 24223 ' inclined gradually upward from the outer periphery. Thus, when inner teeth 2334 and outer teeth 24222 'come into contact up and down, the guide surfaces can function as a good guide so that outer teeth 24222' smoothly enter inner teeth 2334.

To avoid the pinion 233 and clutch gear 2422 ' from becoming disengaged, there is some clearance between the radially outer end 24224 ' of each outer tooth 24222 ' and the radially outer end 2336 of the inner teeth 2334 of the pinion 233.

When the motor 231 is operated, an output shaft 2311 thereof drives the main gear 232 to rotate, so that the sub-gear 233 engaged with the main gear 232 rotates. At this time, if the electromagnetic clutch 2421 of the clutch transmission mechanism 242 is powered on, see the clutch gear 2422 'on the right side in fig. 11 and 12, the clutch block 24212 of the electromagnetic clutch 2421 on the right side moves upwards to drive the clutch gear 2422' on the right side to move upwards, so that the clutch gear 2422 'is meshed with the corresponding pinion 233, and thus the rotation of the pinion 233 can drive the clutch gear 2422' to rotate (to realize the "closing" of the clutch action), and further drive the transmission shaft 2424 to rotate, so that the connecting sleeve 2425 connected with the transmission shaft 2424 rotates, and the corresponding driving pulley rotates to drive the corresponding belt to move, and finally the curtain cloth is driven to move by the corresponding suspension arm and suspension pulley. During this process, return spring 2429 is compressed.

When the electromagnetic clutch 2421 is turned off, i.e. the electromagnetic clutch 2421 is not powered on, such as an unused state when the power supply is cut off or the power supply is manually controlled, referring to the left clutch gear 2422 ' in fig. 11 and 12, the reset force of the left reset spring 2429 causes the left clutch block 24212 to move downwards, so as to drive the left clutch gear 2422 ' to move downwards, and at this time, the clutch gear 2422 ' is disengaged from the pinion 233 (to realize "separation" of the clutch effect), and the rotation of the pinion 233 will not drive the transmission shaft 2424 to rotate. In the above process, the electromagnetic clutch device 2421 can be independently controlled to be powered on and powered off, so that the clutch mechanisms 242 on the left and right sides can be independently operated.

Claims

1. The utility model provides a motorized window curtain, includes track subassembly (1), drive arrangement (2) and final drive (3), track subassembly (1) includes two tracks (11) that set up side by side, is used for the annular belt (12) of being connected with the both sides curtain cloth of (window) respectively, is provided with a belt (12) in every track (11), drive arrangement (2) include actuating mechanism, actuating mechanism includes motor (231), final drive (3) set up the one end outside on the length direction of track (11), final drive (3) include two driving pulley (31), and every belt (12) are around establishing on one of them driving pulley (31), its characterized in that: the driving mechanism further comprises two output ends driven by the motor (231) and opposite in rotating direction, the driving device (2) further comprises a clutch device (24), the clutch device (24) comprises two clutch transmission mechanisms (242) which are independently controlled, the input end of one clutch transmission mechanism (242) is connected with one output end of the driving mechanism, the output end of the one clutch transmission mechanism is connected with one driving belt pulley (31) to drive the driving belt pulley (31) to rotate, the input end of the other clutch transmission mechanism (242) is connected with the other output end of the driving mechanism, and the output end of the other clutch transmission mechanism is connected with the other driving belt pulley (31) to drive the driving belt pulley (31) to rotate.

2. The motorized window treatment according to claim 1, wherein the track assembly (1) further comprises a mounting bracket (15) for mounting the two tracks (11) with an external mounting base, the mounting bracket (15) comprises a side mounting plate (151) and two connecting blocks (152) respectively matched with the two tracks (11), the side mounting plate (151) comprises a top plate (1511) and a mounting plate (1512) which span above the two tracks (11), the mounting plate (1512) is arranged below one end of the top plate (1511) to form a L-type side mounting plate (151), the mounting plate (1512) is positioned on the outer side of one track (11) far away from the other track (11), two sides of the top of each track (11) are respectively recessed towards the middle to form a slot (113), each connecting block (152) comprises a first connecting plate (1521) and a second connecting plate (1522), the first connecting plate (1521) is arranged between the top plate (1511) and connected with the top plate (1511) above the corresponding track (11) and is connected with the top plate (1521), the first connecting plate (1521) is connected with the second connecting plate (1522), a fastener extends from the first connecting plate (1521) to the other side of the corresponding track (1521), a fastener (1522) and a fastener extends from the first connecting plate (1521) to the corresponding track (1521), and a fastener (1522) extends downwards, the second connecting plate (1522) and a fastener extends from the corresponding track (11) and a fastener extends from the first connecting plate (1521) and a fastener extends from the other side of the corresponding track (1521), the first connecting plate (1521) and a fastener extends downwards, the first fastener extends from the corresponding track (1521) and a second fastener.

3. The motorized window treatment of claim 1, wherein: the track assembly (1) further comprises a mounting support (15) used for mounting the two tracks (11) and an external mounting base, the mounting support (15) comprises two connecting blocks (152) matched with the two tracks (11), clamping grooves (113) are formed in the middle of two sides of the top of each track (11) in a recessed mode, each connecting block (152) comprises a first connecting plate (1521) and a second connecting plate (1522), the first connecting plate (1521) is arranged between the upper portion of each track (11) and the top plate (1511) and connected with the top plate (1511), a first buckle (11) extending downwards and used for being clamped with the clamping grooves (113) on one side of the corresponding track (11) is arranged at one end of each first connecting plate (1521), the first connecting plate (1521) extends out of the corresponding track (11) from the upper portion of the corresponding track (11), and the second connecting plate (1522) is arranged at the portion, located outside the corresponding track (11), of the first connecting plate (1521) The lower part of the rail joint is divided, the second connecting plate (1522) is rotatably connected with the first connecting plate (1521) through a longitudinally extending screw (1523) and can be locked, one end of the second connecting plate (1522) is provided with a second buckle (15221) used for being clamped with a clamping groove (113) on the other side of the corresponding rail (11), and the two first connecting plates (1521) are connected with each other.

4. The motorized window treatment of any one of claims 1-3, wherein: the driving mechanism comprises a motor (231), a main gear (232) arranged on an output shaft (2311) of the motor (231) and two auxiliary gears (233) positioned on two sides of the main gear (232), the two auxiliary gears (233) are respectively meshed with the main gear (232), and the auxiliary gears (233) are output ends of the driving mechanism and are respectively connected with corresponding clutch transmission mechanisms (242).

5. The motorized window treatment of claim 4, wherein: each clutch transmission mechanism (242) comprises a transmission shaft (2424) rotating synchronously with the input end, a connecting sleeve (2425) rotating synchronously with the transmission shaft (2424), and an electromagnetic clutch device (2421) for driving the input end to act, wherein the connecting sleeve (2425) is the output end of the clutch transmission mechanism (242), the connecting sleeve (2425) of one clutch transmission mechanism (242) is connected with one driving pulley (31), the connecting sleeve (2425) of the other clutch transmission mechanism (242) is connected with the other driving pulley (31), and the input end can be in a first position disengaged from the pinion (233) and a second position forced to move upwards to be engaged with the pinion (233) for synchronous rotation under the drive of the electromagnetic clutch device (2421); the electromagnetic clutch devices (2421) of the two clutch transmission mechanisms (242) are mutually independent.

6. The motorized window treatment of claim 5, wherein: the input end of the clutch transmission mechanism (242) is a clutch gear (2422 ') located below the pinion (233), the electromagnetic clutch device (2421) comprises a clutch block (24212) capable of moving upwards when powered on, the clutch gear (2422') is connected with the clutch block (24212), and the clutch block (24212) keeps a downward movement trend.

7. The motorized window treatment of claim 6, wherein: inner teeth (2334) are formed on the inner circumferential wall of the pinion (233), the inner teeth (2334) are formed by radially and outwardly recessing the inner circumferential wall of the pinion (233) and are hollow, and outer teeth (24222 ') protruding outwards are formed on the outer circumferential wall of the clutch gear (2422 '), and the outer teeth (24222 ') can be inserted into the corresponding inner teeth (2334) to be meshed with each other.

8. The motorized window treatment of claim 7, wherein: the bottom end of each inner tooth (2334) has a first guide surface (2335) inclined gradually upward from the outer periphery, and the top end of each outer tooth (24222 ') has a second guide surface (24223') inclined gradually upward from the outer periphery.

9. The motorized window treatment of claim 7, wherein: a clearance is provided between a radially outer end (24224') of each outer tooth and a radially outer end (2336) of the corresponding inner tooth.