CN215226680U - Electric opening and closing curtain rail device - Google Patents

Abstract

The utility model discloses an electric opening and closing curtain track device, which comprises an outer track, an inner track transmission box cover plate and an outer track transmission box cover plate, wherein the number of the inner track is one, the number of the outer track is one, and the outer surface of the inner track can slide on the inner surface of the outer track; a transmission component is arranged inside the inner rail and the outer rail; the outer rail is provided with a fixing screw, and the outer rail is fixed with the inner rail by the fixing screw; and outer track and interior track all are equipped with the spout, and outer track's spout and interior track's spout are at same center and stack from top to bottom, are equipped with drive assembly in this electronic (window) curtain track that opens and shuts of adjustable length, and interior track transmission case is located interior track tip, and outer track transmission case is located outer track tip, and inside and outside track cooperation drive assembly can realize when utilizing flexible regulation length that inside hold-in range carries out synchronous nimble length adjustment, and then has improved orbital practicality, the utility model relates to a rationally, be fit for using widely.

Description

Electric opening and closing curtain rail device

Technical Field

The utility model relates to an intelligence house technical field specifically is an electronic (window) curtain rail set that opens and shuts.

Background

The electric curtain is a mode of controlling the curtain by driving a wireless wire by a motor. The installation can be divided into an internal installation and an external installation. The electric curtain is divided into an electric opening and closing curtain series, an electric lifting curtain series, an electric ceiling curtain (an outdoor electric ceiling and an indoor electric ceiling), an electric sun visor, an electric awning and the like according to different operation mechanisms and decoration effects, and specifically comprises a shutter curtain, a roller curtain, a Roman curtain, a soft yarn curtain, an organ curtain, a honeycomb curtain and the like.

The electric opening and closing curtain rail is an important component of an electric opening and closing curtain, the electric opening and closing curtain is required to be installed in home decoration, the length of the electric opening and closing curtain rail on the market is not adjustable, but the sizes of windows are not consistent, so that a professional is required to measure the size of the window in advance, a factory produces the curtain rail according to the measured size in a customized mode, due to the existence of customized production, the large-scale batch production cannot be realized, the production efficiency of the factory is influenced, the stock cannot be made in advance, the efficiency of a selling link is influenced, a certain production period is required from ordering to delivery, and further the popularization and the popularization of the electric curtain are influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides an electric curtain opening and closing track device with telescopic inner and outer rails and freely adjustable synchronous belts, which overcomes the defects.

In order to achieve the above object, the utility model provides a following technical scheme: an electric opening and closing curtain rail device comprises an outer rail, an inner rail transmission box cover plate and an outer rail transmission box cover plate, wherein the number of the inner rail is one, the number of the outer rail is one, and transmission components are arranged inside the inner rail and the outer rail;

the outer surface of the inner rail can slide on the inner surface of the outer rail;

the outer rail is provided with a fixing screw, and the outer rail is fixed with the inner rail by the fixing screw;

an outer rail sliding groove is formed in the outer rail, an inner rail sliding groove is formed in the inner rail, and the outer rail sliding groove and the inner rail sliding groove are arranged in the same center and are overlapped up and down;

the inner track A pulley and the inner track B pulley utilize inner pulley rollers, and the inner track hoisting rings utilize inner hoisting ring rollers to linearly move in the inner track sliding grooves;

the outer track pulley utilizes the outer pulley roller and the outer track hoisting ring utilizes the outer hoisting ring roller to move linearly in the outer track chute;

the transmission assembly comprises an inner track transmission box, an outer track transmission box, an inner track transmission wheel, an outer track transmission wheel, an inner track A pulley, an inner track B pulley, an outer track pulley, a synchronous belt, a first synchronous belt buckle, a second synchronous belt buckle, a first guide wheel, a first reversing wheel, a second guide wheel, a second reversing wheel, a third guide wheel, an inner track reversing wheel support, an outer track reversing wheel support, a plurality of inner track rings and a plurality of outer track rings; the inner track transmission case is fixed at the end part of the inner track by a transmission case pressing sheet through a locking screw, the outer track transmission case is fixed at the end part of the outer track by a transmission case pressing sheet through a locking screw, the inner track transmission case is provided with an inner track transmission wheel, and the outer track transmission case is provided with an outer track transmission wheel; one end of the synchronous belt is meshed with a second synchronous belt buckle and fixed on an inner track B pulley, the other end of the synchronous belt bypasses a second reversing wheel and a second guide wheel on an inner track reversing wheel support, bypasses a first reversing wheel on an outer track reversing wheel support, bypasses a third guide wheel on an outer track transmission case, is meshed with an outer track transmission wheel on the outer track transmission case, is meshed with an inner track transmission wheel on the inner track transmission case, bypasses a first guide wheel on the inner track transmission case, and is finally meshed with the first synchronous belt buckle and fixed on an inner track A pulley, the inner track A pulley and the inner track B pulley are fixed together by pulley connecting screws, and the synchronous belt finally forms a closed loop after bypassing each transmission part.

Preferably, the inner track A pulley and the inner track B pulley are in interference fit and provided with at least one inner pulley roller shaft, the inner track hoisting ring is in interference fit and provided with at least one inner hoisting ring roller shaft, the two ends of the inner pulley roller shaft are in clearance fit and provided with inner pulley rollers, the two ends of the inner hoisting ring roller shaft are in clearance fit and provided with inner hoisting ring rollers, the inner pulley rollers and the inner hoisting ring rollers can roll in the inner track sliding grooves, and smooth linear motion of the inner track A pulley, the inner track B pulley and the inner track hoisting ring in the inner track sliding grooves is guaranteed.

Preferably, the outer track pulley is provided with at least one outer pulley roller shaft in an interference fit manner, the outer track rings are provided with at least one outer ring roller shaft in an interference fit manner, two ends of the outer pulley roller shaft are provided with outer pulley rollers in a clearance fit manner, two ends of the outer ring roller shaft are provided with outer ring rollers in a clearance fit manner, the outer pulley rollers and the outer ring rollers can roll in the outer track sliding grooves, and the outer track pulley and the outer track rings can smoothly and linearly move in the outer track sliding grooves.

Preferably, the outer track pulley is provided with synchronous belt fixing teeth, and the synchronous belt fixing teeth and the outer track pulley are integrated; the outer track pulley is fixed with a metal sheet by a fastening screw; when the fastening screw is loosened, the metal sheet also moves outwards, the gap between the metal sheet and the synchronous belt fixing teeth is increased, the synchronous belt penetrating through the gap is meshed with and separated from the synchronous belt fixing teeth, and the outer track pulley can move on the synchronous belt; and tightening the fastening screw to enable the metal sheet to engage and compress the synchronous belt and the synchronous belt fixing teeth, and fixing the outer track pulley and the synchronous belt together.

Preferably, an inner rail transmission case is fixed at one end of the inner rail, an inner rail reversing wheel support is fixed at the other end of the inner rail, a guide wheel metal shaft and a second reversing wheel metal shaft are arranged on the reversing wheel support in an interference fit mode, a second guide wheel is arranged on the guide wheel metal shaft in a clearance fit mode, a second reversing wheel is arranged on the second reversing wheel metal shaft in a clearance fit mode, and the direction of the synchronous belt is changed into the opposite direction when the synchronous belt winds around the second reversing wheel.

Preferably, an outer rail transmission case is fixed at one end of the outer rail, an outer rail reversing wheel support is fixed at the other end of the outer rail, a first reversing wheel metal shaft is arranged on the outer rail reversing wheel support in an interference fit mode, and a first reversing wheel is arranged on the first reversing wheel metal shaft in a clearance fit mode.

Preferably, the inner track transmission case is provided with a first guide wheel in a clearance fit manner, the outer track transmission case is provided with a third guide wheel in a clearance fit manner, and the third guide wheel is provided with a spring and a positioning buckle.

Preferably, the inner track transmission box cover plate and the outer track transmission box cover plate are integrally provided with annular protrusions, and the annular protrusions are integrally provided with trisection barbs.

Preferably, a motor is arranged on the transmission case, the motor extends into the transmission case, and the motor is in transmission connection with the transmission wheel; the transmission case cover plate is provided with trisection barbs for hooking the motor, and the positioning buckles on the transmission case are inserted into the motor by the elastic force of the springs.

Compared with the prior art, the beneficial effects of the utility model are that:

this electronic (window) curtain rail set that opens and shuts utilizes outer track and interior track to carry out two sections regulations, has improved the flexibility of device, and interior track can utilize set screw and outer track to carry out nimble regulation in certain length moreover, and cooperation drive assembly can realize that inside hold-in range carries out synchronous nimble length adjustment, and then has improved orbital practicality to realize the mass production of device, improved the application scope of device.

Drawings

Fig. 1 is a projection view of the present invention;

FIG. 2 is a cross-sectional view AA in FIG. 1;

FIG. 3 is a schematic diagram of the timing belt of the present invention;

FIG. 4 is a transverse cross-sectional view of the outer and inner rails;

FIG. 5 is a view of BB in FIG. 1;

FIG. 6 is a cross-sectional view CC of FIG. 1;

FIG. 7 is a cross-sectional view DD taken in FIG. 1;

FIG. 8 is a sectional view of EE of FIG. 1;

fig. 9 is a three-dimensional view of the present invention;

FIG. 10 is a three-dimensional view of the inner and outer rails and internal components of the present invention;

FIG. 11 is a three-dimensional view of the outer rail sheave assembly of the present invention;

FIG. 12 is a three-dimensional view of an inner rail sheave assembly of the present invention;

FIG. 13 is a three-dimensional view of the inner and outer rail eye assembly of the present invention;

fig. 14 is a three-dimensional view of the inner track reversing wheel bracket assembly of the present invention;

fig. 15 is a three-dimensional view of the outer rail reversing wheel bracket assembly of the present invention.

In the figure: 1. an inner track transmission case; 2. an inner rail transmission wheel; 3. a first guide wheel; 4. an inner rail; 41. an inner rail runner; 5. a synchronous belt; 6. a protective cover; 7. an inner track A pulley; 71. inner trolley rollers; 72. an inner sheave shaft; 73. a pulley fixing screw; 8. a first synchronization buckle; 81. a first synchronous buckle cover; 9. a second synchronization buckle; 91. a second synchronous belt is buckled; 10. an inner track B pulley; 11. an outer track block; 111. a metal sheet; 112. an outer pulley roller; 113. fastening screws; 114. an outer pulley roller shaft; 115. fixing teeth by a synchronous belt; 12. an outer rail; 121. an outer rail runner; 13. an outer track gear box; 14. an outer rail transmission wheel; 15. an outer rail reversing wheel bracket; 16. a first reversing wheel; 17. a first reverse wheel metal shaft; 18. fixing screws; 19. a second guide wheel; 20. a guide wheel metal shaft; 21. an inner rail reversing wheel bracket; 22. a second reverse wheel metal shaft; 23. a second reversing wheel; 24. a third guide wheel; 25. a spring; 26. a scooter handle; 27. A scooter handle set screw; 28. an inner rail hoisting ring; 281. an inner suspension ring roller; 282. an inner suspension ring roller shaft; 29. an outer rail suspension ring; 291. an outer hoisting ring roller; 292. an outer ring roller shaft; 30. a motor; 31. an inner track transmission box cover plate; 32. a transmission case pressing sheet; 33. locking screws; 34. an outer track transmission case cover plate; 341. an annular projection; 342. trisecting the barb; 35. positioning buckles; 36. a set screw; 37. and fixing the screw.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the present invention provides a technical solution: an electric opening and closing curtain rail device comprises an outer rail 12, an inner rail 4, an inner rail transmission box cover plate 31 and an outer rail transmission box cover plate 34, wherein the number of the inner rail 4 is one, the number of the outer rail 12 is one, and transmission components are arranged inside the inner rail 4 and the outer rail 12;

the outer surface of the inner rail 4 can slide on the inner surface of the outer rail 12;

the outer rail 12 is provided with a fixing screw 37, and the outer rail 12 is fixed with the inner rail 4 by the fixing screw 37;

an outer rail sliding groove 121 is formed in the outer rail 12, an inner rail sliding groove 41 is formed in the inner rail 4, and the outer rail sliding groove 121 and the inner rail sliding groove 41 are arranged at the same center and are overlapped up and down;

the inner track A trolley 7 and the inner track B trolley 10 move linearly in the inner track sliding groove 41 by utilizing the inner trolley roller 71 and the inner track hoisting ring 28 by utilizing the inner hoisting ring roller 281;

the outer track trolley 11 utilizes the outer trolley roller 112 and the outer track lifting ring 29 utilizes the outer lifting ring roller 291 to move linearly in the outer track sliding groove 121;

the transmission assembly comprises an inner track transmission box 1, an outer track transmission box 13, an inner track transmission wheel 2, an outer track transmission wheel 14, an inner track A pulley 7, an inner track B pulley 10, an outer track pulley 11, a synchronous belt 5, a first synchronous belt buckle 8, a second synchronous belt buckle 9, a first guide wheel 3, a first reversing wheel 16, a second guide wheel 19, a second reversing wheel 23, a third guide wheel 24, an inner track reversing wheel bracket 21, an outer track reversing wheel bracket 15, a plurality of inner track rings 28 and a plurality of outer track rings 29; the inner track transmission case 1 is fixed at the end part of the inner track 4 by a transmission case pressing sheet 32 through a locking screw 33, the outer track transmission case 13 is fixed at the end part of the outer track 12 by a transmission case pressing sheet 32 through a locking screw 33, the inner track transmission case 1 is provided with an inner track transmission wheel 2, and the outer track transmission case 13 is provided with an outer track transmission wheel 14; one end of the synchronous belt 5 is meshed with a second synchronous belt buckle 9 and fixed on the inner track B pulley 10, the other end of the synchronous belt 5 bypasses a second reversing wheel 23 and a second guide wheel 19 on an inner track reversing wheel support 21, bypasses a first reversing wheel 16 on an outer track reversing wheel support 15, bypasses a third guide wheel 24 on an outer track transmission box 13, is meshed with an outer track transmission wheel 14 on the outer track transmission box 13, is meshed with an inner track transmission wheel 2 on the inner track transmission box 1, bypasses a first guide wheel 3 on the inner track transmission box 1, and is finally meshed with the first synchronous belt buckle 8 and fixed on the inner track A pulley 7, the inner track A pulley 7 and the inner track B pulley 10 are fixed together through a pulley connecting screw 73, and the synchronous belt 5 finally forms a closed loop after bypassing each transmission part.

When the inner rail 4 in the outer rail 12 is pulled out along the length direction, the overlapping part of the outer rail 12 and the inner rail 4 is reduced, the center distance between the second reversing wheel 23 on the reversing wheel bracket 21 of the inner rail and the first reversing wheel 16 on the reversing wheel bracket 15 of the outer rail is reduced, and the required length of the synchronous belt 5 wound on the two reversing wheels is shortened; when the inner track 4 in the outer track 12 is pulled out along the length direction, the center distance between the outer track transmission wheel 14 arranged in the outer track transmission box 13 and the inner track transmission wheel 2 arranged in the inner track transmission box 1 is increased along with the increase, and the required length of the synchronous belt 5 wound on the two transmission wheels is also increased along with the increase; the required length shortening value of the synchronous belt 5 wound on the two reversing wheels is exactly equal to the required length lengthening value of the synchronous belt 5 wound on the two driving wheels, so that the length of the synchronous belt 5 can be freely adjusted along with the length of the track.

When the inner rail 4 in the outer rail 12 is retracted along the length direction, the overlapped part of the outer rail 12 and the inner rail 4 is enlarged, the center distance between the second reversing wheel 23 on the reversing wheel bracket 21 of the inner rail and the first reversing wheel 16 on the reversing wheel bracket 15 of the outer rail is enlarged along with the enlargement, and the required length of the synchronous belt 5 wound on the two reversing wheels is lengthened; when the inner track 4 in the outer track 12 is retracted along the length direction, the center distance between the outer track transmission wheel 14 arranged in the outer track transmission box 13 and the inner track transmission wheel 2 arranged in the inner track transmission box 1 is also reduced, and the required length of the synchronous belt 5 wound on the two transmission wheels is also reduced; the length change value of the synchronous belt 5 on the two reversing wheels is exactly equal to the length change value of the synchronous belt 5 on the two driving wheels, so that the length of the synchronous belt 5 can be freely adjusted along with the length of the track.

Further, the inner track a pulley 7 and the inner track B pulley 10 are provided with at least one inner pulley roller shaft 72 in an interference fit manner, the inner track suspension ring 28 is provided with at least one inner suspension ring roller shaft 282 in an interference fit manner, the inner pulley rollers 71 are arranged at two ends of the inner pulley roller shaft 72 in a clearance fit manner, the inner suspension ring rollers 281 are arranged at two ends of the inner suspension ring roller shaft 282 in a clearance fit manner, the inner pulley rollers 71 and the inner suspension ring rollers 281 can roll in the inner track sliding groove 41, and it is ensured that the inner track a pulley 7, the inner track B pulley 10 and the inner track suspension ring 28 can smoothly and linearly move in the inner track sliding groove 41.

Further, the outer rail trolley 11 is provided with at least one outer trolley roller shaft 114 in an interference fit manner, the outer rail hanging ring 29 is provided with at least one outer hanging ring roller shaft 292 in an interference fit manner, two ends of the outer trolley roller shaft 114 are provided with outer trolley rollers 112 in a clearance fit manner, two ends of the outer hanging ring roller shaft 292 are provided with outer hanging ring rollers 291 in a clearance fit manner, and the outer trolley rollers 112 and the outer hanging ring rollers 291 can roll in the outer rail sliding grooves 121. The outer rail trolley 11 and the outer rail hanging ring 29 can move smoothly and linearly in the outer rail sliding groove 121.

Further, the outer track pulley 11 is provided with synchronous belt fixing teeth 115, and the synchronous belt fixing teeth 115 and the outer track pulley 11 are integrated; a metal sheet 111 is fixed on the outer track pulley 11 by a fastening screw 113; when the fastening screw 113 is loosened, the metal sheet 111 also moves outwards, the gap between the metal sheet 111 and the synchronous belt fixing teeth 115 is increased, the synchronous belt 5 penetrating the gap is meshed with and separated from the synchronous belt fixing teeth 115, and the outer track pulley 11 can move on the synchronous belt 5; when the fastening screw 113 is tightened, the metal sheet 111 meshes and compresses the timing belt 5 and the timing belt fixing teeth 115, and the outer rail pulley 11 and the timing belt 5 are fixed together.

Further, an inner rail transmission case 1 is fixed at one end of the inner rail 4, an inner rail reversing wheel support 21 is fixed at the other end of the inner rail transmission case, a guide wheel metal shaft 20 and a second reversing wheel metal shaft 22 are arranged on the reversing wheel support 21 in an interference fit mode, a second guide wheel 19 is arranged on the guide wheel metal shaft 20 in a clearance fit mode, and a second reversing wheel 23 is arranged on the second reversing wheel metal shaft 22 in a clearance fit mode. The direction of the timing belt 5 changes to the opposite direction while passing around the second reverse wheel 23.

Further, an outer rail transmission case 13 is fixed at one end of the outer rail 12, an outer rail reversing wheel support 15 is fixed at the other end of the outer rail 12, a first reversing wheel metal shaft 17 is arranged on the outer rail reversing wheel support 15 in an interference fit mode, and a first reversing wheel 16 is arranged on the first reversing wheel metal shaft 17 in a clearance fit mode.

Further, the inner track transmission case 1 is provided with a first guide wheel 3 in a clearance fit manner, and the outer track transmission case 13 is provided with a third guide wheel 24 in a clearance fit manner, and is provided with a spring 25 and a positioning buckle 35.

Further, an annular protrusion 341 is integrally formed on the inner rail transmission case cover plate 31 and the outer rail transmission case cover plate 34, and a trisection barb 342 is integrally formed on the annular protrusion 341.

Further, a motor 30 is arranged on the transmission case, the motor 30 extends into the transmission case, and the motor is in transmission connection with the transmission wheel; the transmission case cover plate is provided with trisection barbs 342 for hooking the motor, and the positioning buckles 35 on the transmission case are inserted into the motor by the elasticity of the springs 25.

The method of use of this example is as follows: when the track needs to be lengthened for a certain length, firstly, the fastening screw 113 of the outer track pulley keeps a loosened state and then begins to be lengthened, for example, the track is lengthened for 1 meter on the original basis, the inner track 4 is pulled out for 1 meter, and the inner track 4 is locked by the fixing screw 37 after being pulled out to a required position; the inner rail pulley assembly is pulled to be close to one side of the inner rail transmission case to be stopped, the outer rail pulley assembly is pulled to be close to one side of the outer rail transmission case 13 to be stopped, and then the outer rail pulley fastening screw 113 is screwed down to fixedly connect the outer rail pulley assembly to the synchronous belt 5 on one side of the outer rail.

As shown in fig. 9: the transmission case 1 is provided with a motor 30, the motor 30 extends into the transmission case 1, and the motor 30 is in transmission connection with the inner track transmission wheel 2.

The motor 30 receives an instruction of the control terminal to drive the driving wheel to rotate clockwise or anticlockwise, the driving wheel drives the synchronous belt to move linearly in the track, the synchronous belt 5 drives the inner track pulley assembly and the outer track pulley assembly to move linearly in the track in opposite directions or opposite directions, and the curtain cloth fixed on the pulley handle 26, the inner track hanging ring 28 and the outer track hanging ring 29 performs opening or closing actions.

In the embodiments of the present application, the descriptions of the directional terms such as "front", "back", "left" and "right" are only described according to the directions shown in the drawings shown in the present application, and are not limited to the scope of the claims of the present application, and in the specific implementation process, other similar or similar embodiments may be obtained by correspondingly modifying the embodiments according to the embodiments, and all of the embodiments are within the scope of the present application, and the descriptions of the other similar or similar embodiments are not repeated in the present application.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

It should be finally noted that the above only serves to illustrate the technical solution of the present invention, and not to limit the scope of the present invention, and that simple modifications or equivalent replacements performed by those skilled in the art to the technical solution of the present invention do not depart from the spirit and scope of the technical solution of the present invention.

Claims (9)

1. The utility model provides an electronic (window) curtain rail set that opens and shuts, includes outer track (12), interior track (4), interior track transmission case apron (31) and outer track transmission case apron (34), the quantity of interior track (4) is one, and the quantity of outer track (12) is one, its characterized in that: a transmission component is arranged inside the inner track (4) and the outer track (12);

the outer surface of the inner rail (4) can slide on the inner surface of the outer rail (12);

the outer rail (12) is provided with a fixing screw (37), and the outer rail (12) is fixed with the inner rail (4) by the fixing screw (37);

an outer track sliding groove (121) is formed in the outer track (12), an inner track sliding groove (41) is formed in the inner track (4), and the outer track sliding groove (121) and the inner track sliding groove (41) are arranged at the same center and are overlapped up and down;

the inner track A trolley (7) and the inner track B trolley (10) utilize inner trolley rollers (71), and the inner track hoisting ring (28) utilizes inner hoisting ring rollers (281) to make linear motion in the inner track sliding groove (41);

the outer track trolley (11) makes linear motion in the outer track sliding groove (121) by using an outer trolley roller (112) and the outer track lifting ring (29) by using an outer lifting ring roller (291);

the transmission assembly comprises an inner track transmission box (1), an outer track transmission box (13), an inner track transmission wheel (2), an outer track transmission wheel (14), an inner track A pulley (7), an inner track B pulley (10), an outer track pulley (11), a synchronous belt (5), a first synchronous belt buckle (8), a second synchronous belt buckle (9), a first guide wheel (3), a first reversing wheel (16), a second guide wheel (19), a second reversing wheel (23), a third guide wheel (24), an inner track reversing wheel bracket (21), an outer track reversing wheel bracket (15), a plurality of inner track lifting rings (28) and a plurality of outer track lifting rings (29); the inner track transmission case (1) is fixed at the end part of the inner track (4) by a transmission case pressing sheet (32) through a locking screw (33), the outer track transmission case (13) is fixed at the end part of the outer track (12) by the transmission case pressing sheet (32) through the locking screw (33), the inner track transmission case (1) is provided with an inner track transmission wheel (2), and the outer track transmission case (13) is provided with an outer track transmission wheel (14); one end of a synchronous belt (5) is meshed with a second synchronous belt buckle (9) and fixed on an inner track B pulley (10), the other end of the synchronous belt bypasses a second reversing wheel (23) and a second guide wheel (19) on an inner track reversing wheel support (21), bypasses a first reversing wheel (16) on an outer track reversing wheel support (15), bypasses a third guide wheel (24) on an outer track transmission case (13), is meshed with an outer track transmission wheel (14) arranged on the outer track transmission case (13) and passes through, is meshed with an inner track transmission wheel (2) arranged on the inner track transmission case (1) and passes through, bypasses a first guide wheel (3) on the inner track transmission case (1), and the final end part of the synchronous belt is meshed with a first synchronous belt buckle (8) and fixed on an inner track A pulley (7), the inner track A pulley (7) and the inner track B pulley (10) are fixed together by a pulley connecting screw (73), the synchronous belt (5) finally forms a closed loop after bypassing each transmission component.

2. An electrically operated window covering track assembly as set forth in claim 1, wherein: interior track A coaster (7), interior track B coaster (10) interference fit are equipped with at least one interior coaster gyro wheel axle (72), interior track rings (28) interference fit are equipped with at least one interior suspension ring gyro wheel axle (282), interior coaster gyro wheel (71) are equipped with to interior coaster gyro wheel axle (72) both ends clearance fit, interior suspension ring gyro wheel axle (282) both ends clearance fit is equipped with interior rings gyro wheel (281), interior coaster gyro wheel (71), interior rings gyro wheel (281) can roll in interior track spout (41), guarantee interior track A coaster (7), interior track B coaster (10), interior track rings (28) can be in interior track spout (41) smooth linear motion.

3. An electrically operated window covering track assembly as set forth in claim 1, wherein: the outer rail trolley (11) is provided with at least one outer trolley roller shaft (114) in an interference fit mode, the outer rail hanging rings (29) are provided with at least one outer hanging ring roller shaft (292) in an interference fit mode, the two ends of the outer trolley roller shaft (114) are in clearance fit with the outer trolley rollers (112), the two ends of the outer hanging ring roller shaft (292) are in clearance fit with the outer hanging ring rollers (291), the outer trolley rollers (112) and the outer hanging ring rollers (291) can roll in the outer rail sliding grooves (121), and the outer rail trolley (11) and the outer rail hanging rings (29) can move smoothly and linearly in the outer rail sliding grooves (121).

4. An electrically operated window covering track assembly as set forth in claim 1, wherein: the outer track pulley (11) is provided with synchronous belt fixing teeth (115), and the synchronous belt fixing teeth (115) and the outer track pulley (11) are integrated; a metal sheet (111) is fixed on the outer track pulley (11) by a fastening screw (113); when the fastening screw (113) is loosened, the metal sheet (111) also moves outwards along with the metal sheet, the gap between the metal sheet (111) and the synchronous belt fixing teeth (115) is increased, the synchronous belt (5) penetrating through the gap is meshed with and separated from the synchronous belt fixing teeth (115), and the outer track pulley (11) can move on the synchronous belt (5); when the fastening screw (113) is tightened, the metal sheet (111) meshes and compresses the synchronous belt (5) and the synchronous belt fixing teeth (115), and the outer track pulley (11) and the synchronous belt (5) are fixed together.

5. An electrically operated window covering track assembly as set forth in claim 1, wherein: interior track (4) one end is fixed with interior track transmission case (1), and the other end is fixed with an interior track switching-over wheel support (21), and interference fit is equipped with a leading wheel metal axle (20) on switching-over wheel support (21), second switching-over wheel metal axle (22), and clearance fit is equipped with a second leading wheel (19) on leading wheel metal axle (20), and clearance fit is equipped with a second switching-over wheel (23) on second switching-over wheel metal axle (22), and the direction changes into opposite direction when hold-in range (5) are around second switching-over wheel (23).

6. An electrically operated window covering track assembly as set forth in claim 1, wherein: an outer rail transmission case (13) is fixed at one end of the outer rail (12), an outer rail reversing wheel support (15) is fixed at the other end of the outer rail (12), a first reversing wheel metal shaft (17) is arranged on the outer rail reversing wheel support (15) in an interference fit mode, and a first reversing wheel (16) is arranged on the first reversing wheel metal shaft (17) in a clearance fit mode.

7. An electrically operated window covering track assembly as set forth in claim 1, wherein: the inner track transmission case (1) is provided with a first guide wheel (3) in a clearance fit manner, the outer track transmission case (13) is provided with a third guide wheel (24) in a clearance fit manner, and the third guide wheel is provided with a spring (25) and a positioning buckle (35).

8. An electrically operated window covering track assembly as set forth in claim 1, wherein: the inner track transmission box cover plate (31) and the outer track transmission box cover plate (34) are integrally provided with annular protrusions (341), and the annular protrusions (341) are integrally provided with trisection barbs (342).

9. An electrically operated window covering track assembly as set forth in claim 1, wherein: the transmission case is provided with a motor (30), the motor (30) extends into the transmission case, and the motor is in transmission connection with the transmission wheel; the transmission case cover plate is provided with trisection barbs (342) for hooking the motor, and a positioning buckle (35) on the transmission case is inserted into the motor by the elasticity of a spring (25).

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