Electric curtain telescopic rail and electric curtain

Abstract

The utility model relates to the technical field of electric curtains, in particular to an electric curtain telescopic rail and an electric curtain. In order to solve the problems that an existing electric curtain mounting rail is fixed in length, cannot adapt to different window sizes and needs to be customized, so that the cost is high, the delivery time is long, field cutting and splicing are possibly needed during mounting, and the structural strength, the stability, the using effect and the service life are affected, the following technical scheme is provided: the electric curtain mounting rail comprises a first guide rail; a second guide rail is slidably connected into the first guide rail; the connecting assembly is fixed to the end, close to the second guide rail, of the first guide rail and used for locking the extending length of the second guide rail. The main transmission case is mounted at one end, away from the first guide rail, of the second guide rail. The utility model can reduce the cost, shorten the delivery time, improve the market competitiveness, simplify the installation process, enhance the structural strength and stability of the track, improve the use effect of the electric curtain and prolong the service life of the electric curtain.

Description

Technical Field

[0001] This utility model relates to the field of electric curtain technology, and in particular to an electric curtain telescopic track and an electric curtain. Background Technology

[0002] As people's living standards improve, their demands for smart and convenient home furnishings are also increasing. Electric curtains, as an important component of smart homes, have received widespread attention and application. Electric curtains not only provide users with a convenient operating experience but also enhance the overall aesthetics and comfort of the home.

[0003] However, current motorized curtains on the market have some significant drawbacks in terms of installation tracks. Most existing motorized curtain tracks are of fixed length, failing to flexibly adapt to different window sizes and installation environments. In practical applications, different customers have significantly different window widths, necessitating the customization of tracks to meet individual needs. This customization process involves specialized manufacturing techniques and a longer production cycle, increasing production costs, extending product delivery time, and reducing market competitiveness. Furthermore, fixed-length tracks require on-site cutting or splicing if the dimensions are unsuitable, increasing installation difficulty and time, and potentially affecting the overall structural strength and stability of the track, thus impacting the performance and lifespan of the motorized curtains. Therefore, this utility model proposes a telescopic motorized curtain track. Utility Model Content

[0004] The purpose of this utility model is to address the problems in the background technology where the length of the existing electric curtain installation track is fixed, which cannot adapt to different window sizes, requires customization, resulting in high costs and long delivery times, and may require on-site cutting and splicing during installation, affecting structural strength, stability, usage effect and lifespan. The present invention proposes an electric curtain telescopic track.

[0005] In a first aspect, this utility model proposes an electric curtain telescopic track, comprising a first guide rail, wherein a second guide rail is slidably connected to the first guide rail; a connecting component fixed to one end of the first guide rail near the second guide rail, the connecting component being used to lock the extension length of the second guide rail; a main transmission box installed at the end of the second guide rail away from the first guide rail, and a secondary transmission box provided at the end of the first guide rail away from the second guide rail, wherein a drive component is provided in the first guide rail, the second guide rail, the main transmission box, and the secondary transmission box; two sets of trolleys, the two sets of trolleys being slidably connected to the first guide rail and the second guide rail respectively, both sets of trolleys being connected to the drive component; multiple sets of hanging rings, the multiple sets of hanging rings being slidably connected to the first guide rail or the second guide rail; two sets of tensioners, the two sets of tensioners being installed below the main transmission box and the secondary transmission box respectively; and multiple sets of mounting brackets, the multiple sets of mounting brackets being respectively snapped onto the top of the first guide rail or the second guide rail.

[0006] Optionally, the connecting assembly includes a collar sleeved on one end of the first guide rail near the second guide rail, the second guide rail being slidably connected in the collar, a second fixing bolt passing through the top of the collar, the second fixing bolt passing through the collar and being threadedly connected to the first guide rail, a positioning plate slidably connected to the second fixing bolt located inside the collar, the positioning plate being located on the top of the second guide rail, and multiple sets of second locking bolts threadedly connected to the positioning plate, the second locking bolts passing through the top of the collar.

[0007] Optionally, a connecting pipe is inserted into the side of the auxiliary transmission box near the first guide rail. The connecting pipe is slidably connected to the first guide rail. A third fixing bolt is threaded into the connecting pipe and passes through one side of the auxiliary transmission box. A through hole is opened on the side of the connecting pipe. An end hook is provided on the side of the main transmission box that is far away from the auxiliary transmission box.

[0008] Optionally, a connecting piece is provided at one end of the first guide rail near the auxiliary transmission box. The connecting piece is provided with a first fixing bolt that is threadedly connected to the first guide rail. The connecting piece is also threadedly connected with multiple sets of first locking bolts.

[0009] Optionally, the drive assembly includes a rotating block rotatably connected to the main transmission box, a gear ring fixedly connected to the outside of the rotating block, a gear rotatably connected to the auxiliary transmission box, a belt wound around the outside of the gear ring and the gear, one end of the belt being located on the side away from the first guide rail through the through hole, and the other end of the belt extending to the outside of the first guide rail through the through hole, with a limit block installed on the belt.

[0010] Optionally, the trolley includes a sliding body slidably connected to a first guide rail or a second guide rail. The sliding body is provided with multiple sets of rollers. A fixed buckle and a sliding buckle are fixedly connected to the sliding body. Both the fixed buckle and the sliding buckle are engaged with a belt. The limiting block is located between the fixed buckle and the sliding buckle.

[0011] Optionally, the sliding body is provided with multiple sets of third locking bolts, and the multiple sets of third locking bolts are threadedly connected to a locking plate. The locking plate is located inside the first guide rail, and a spring is provided between the locking plate and the sliding body.

[0012] Optionally, the tensioner includes a mounting plate, which is L-shaped. Fixing plates are fixedly connected to both sides of the mounting plate, and an adjusting plate is provided between the two sets of fixing plates. A fourth locking bolt is rotatably connected to the adjusting plate, and the fourth locking bolt is threadedly connected to the mounting plate.

[0013] Secondly, this utility model proposes an electric curtain, including the aforementioned electric curtain telescopic track, wherein the curtain is connected to the bottom of the mounting plate, the sliding body and multiple sets of hanging rings via hooks.

[0014] In summary, this application includes at least one of the following beneficial technical effects:

[0015] This utility model, through the sliding connection of the first and second guide rails, as well as the matching connecting components and locking device, can quickly and conveniently adjust the length of the telescopic rail to adapt to curtain boxes of different sizes. The adjustment process is simple, and clear adjustment length references and operating steps are provided, which greatly improves installation efficiency.

[0016] Furthermore, through the coordinated design of components such as drive components, pulleys, and tensioners, the stability and smoothness of belt drive are ensured, belt tension is easy to adjust, pulley movement is smooth, ensuring stable operation of electric curtains, and the number and position of hanging rings are clearly specified, with the overall structure being robust and durable.

[0017] In summary, this utility model can reduce costs, shorten delivery time, enhance market competitiveness, simplify the installation process, strengthen the track structure and stability, and improve the performance and lifespan of electric curtains. Attached Figure Description

[0018] Figure 1 A schematic diagram of an electric curtain retractable track is provided.

[0019] Figure 2 This is a schematic diagram of the driver component;

[0020] Figure 3 This is a structural schematic diagram of the auxiliary transmission box;

[0021] Figure 4 This is a structural diagram of the connecting components;

[0022] Figure 5 This is a schematic diagram of the pulley structure;

[0023] Figure 6 This is a structural diagram of the locking plate;

[0024] Figure 7 This is a schematic diagram of the tensioner.

[0025] Figure label:

[0026] 1. First guide rail; 11. Connecting piece; 12. First fixing bolt; 13. First locking bolt;

[0027] 2. Second guide rail;

[0028] 3. Connecting assembly; 31. Collar; 32. Second fixing bolt; 33. Positioning plate; 34. Second locking bolt;

[0029] 4. Main drive box;

[0030] 5. Secondary transmission box; 51. Connecting pipe; 52. Third fixing bolt; 53. Through hole; 54. End hook;

[0031] 6. Drive assembly; 61. Rotating block; 62. Gear ring; 63. Gear; 64. Belt; 65. Limit block;

[0032] 7. Pulley; 71. Sliding body; 72. Fixing buckle; 73. Sliding buckle; 74. Third locking bolt; 75. Locking plate; 76. Spring;

[0033] 8. Hanging rings;

[0034] 9. Tensioner; 91. Mounting plate; 92. Fixing plate; 93. Adjusting plate; 94. Fourth locking bolt;

[0035] 10. Installation code. Detailed Implementation

[0036] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0037] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0038] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0039] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] Example

[0042] like Figure 1 As shown, the present invention proposes an electric curtain telescopic track, including a first guide rail 1, in which a second guide rail 2 is slidably connected. The second guide rail 2 adjusts the overall length when sliding, thereby adapting to the needs of different customers.

[0043] For further details, please refer to Figure 1 and Figure 4 The aforementioned telescopic rail includes a connecting assembly 3 fixed to one end of the first guide rail 1 near the second guide rail 2. The connecting assembly 3 is used to lock the extension length of the second guide rail 2. The connecting assembly 3 includes a collar 31 sleeved on the first guide rail 1 near the second guide rail 2. The second guide rail 2 is slidably connected to the collar 31. A second fixing bolt 32 passes through the top of the collar 31 and is threadedly connected to the first guide rail 1, thereby fixing the collar 31 to one end of the first guide rail 1. A positioning plate 33 located inside the collar 31 is slidably connected to the second fixing bolt 32, and the second fixing bolt 32 is used to limit the positioning plate 33. The positioning plate 33 is located on the top of the second guide rail 2. Multiple sets of second locking bolts 34 are threaded on the positioning plate 33. The second locking bolts 34 pass through the top of the collar 31. After the second locking bolts 34 are rotated, they can adjust the pressure of the positioning plate 33 on the second guide rail 2, thereby fixing the position of the second guide rail 2 after it extends to the required length, preventing the second guide rail 2 from sliding and ensuring the length is fixed.

[0044] Furthermore, such as Figure 3As shown, the telescopic rail includes a main transmission box 4 installed on the end of the second guide rail 2 away from the first guide rail 1, and a secondary transmission box 5 installed on the end of the first guide rail 1 away from the second guide rail 2. A connecting pipe 51 is inserted into the side of the secondary transmission box 5 near the first guide rail 1, and the connecting pipe 51 is slidably connected to the first guide rail 1. The secondary transmission box 5 is connected to the first guide rail 1 through the connecting pipe 51, which also facilitates adjustment of the distance between the secondary transmission box 5 and the first guide rail 1. A third fixing bolt 52 is threaded into the connecting pipe 51, and the third fixing bolt 52 passes through one side of the secondary transmission box 5, fixing the position of the secondary transmission box 5 and the connecting pipe 51. A connecting piece 11 is provided on the end of the first guide rail 1 near the secondary transmission box 5, and a first fixing bolt 12 is provided on the connecting piece 11 and threadedly connected to the first guide rail 1, fixing the position of the connecting piece 11. Multiple sets of first locking bolts 13 are threaded onto the connecting piece 11. By rotating the first locking bolts 13, the connecting pipe 51 is locked, ensuring that the distance between the auxiliary transmission box 5 and the first guide rail 1 is equal. A through hole 53 is provided on the side of the connecting pipe 51, which facilitates the pulling of the belt 64 to adjust the tension. An end hook 54 is provided on the side of the main transmission box 4 that is far away from the auxiliary transmission box 5. The end hook 54 is provided to facilitate flexible adjustment of the position of the curtain end.

[0045] For details, please refer to Figure 2 A drive assembly 6 is provided in the first guide rail 1, the second guide rail 2, the main transmission box 4, and the auxiliary transmission box 5. The drive assembly 6 includes a rotating block 61 rotatably connected to the main transmission box 4. A gear ring 62 is fixedly connected to the outside of the rotating block 61. The rotating block 61 and the gear ring 62 maintain their original position and rotate, which is convenient for the rotating block 61 to be driven by a servo motor to drive the gear ring 62 to rotate. A gear 63 is rotatably connected in the auxiliary transmission box 5. The gear 63 maintains its original position and rotates. A belt 64 is wound around the outside of the gear ring 62 and the gear 63. One end of the belt 64 is located on the side of the through hole 53 away from the first guide rail 1, and the other end of the belt 64 extends to the outside of the first guide rail 1 through the through hole 53. A limit block 65 is installed on the belt 64 to limit the position of one end of the belt 64.

[0046] Furthermore, such as Figure 1 , Figure 5 and Figure 6As shown, the telescopic rail includes two sets of trolleys 7, which are slidably connected to the first guide rail 1 and the second guide rail 2, respectively. Both sets of trolleys 7 are connected to the drive assembly 6. When the gear 63 moves, the trolleys 7 move synchronously and in opposite directions. Each trolley 7 includes a sliding body 71 slidably connected to either the first guide rail 1 or the second guide rail 2. The sliding body 71 is equipped with multiple sets of rollers to ensure smooth movement. A fixing buckle 72 and a sliding buckle 73 are fixedly connected to the sliding body 71. Both the fixing buckle 72 and the sliding buckle 73 engage with the belt 64, with the fixing buckle 72 fixing one end of the belt 64. A limiting block 65 is located between the fixing buckle 72 and the sliding buckle 73, causing the belt 64 to form a loop, thus allowing the belt 64 to move when the trolley 7 moves. Multiple sets of third locking bolts 74 are threaded through the sliding body 71. The multiple sets of third locking bolts 74 are threaded together to a locking plate 75. The locking plate 75 is located inside the first guide rail 1 or the second guide rail 2. A spring 76 is provided between the locking plate 75 and the sliding body 71. After the third locking bolts 74 are rotated, they can drive the locking plate 75 to press against the side wall of the first guide rail 1, thereby fixing the position of the trolley 7.

[0047] Furthermore, the aforementioned telescopic rail includes multiple sets of hanging rings 8, all of which are slidably connected to the first guide rail 1 or the second guide rail 2, and are used to connect curtain hooks. The hanging rings 8 in the first guide rail 1 are sliding hanging rings without rollers, while the hanging rings 8 in the second guide rail 2 are rolling hanging rings with rollers, facilitating smooth movement of the curtain hooks.

[0048] For further details, please refer to Figure 7 The aforementioned telescopic rail includes two sets of tensioners 9, which are respectively installed below the main transmission box 4 and the auxiliary transmission box 5. Each tensioner 9 includes a mounting plate 91, which is L-shaped. Fixing plates 92 are fixedly connected to both sides of the mounting plate 91. An adjusting plate 93 is positioned between the two sets of fixing plates 92. A fourth locking bolt 94 is rotatably connected to the adjusting plate 93. The fourth locking bolt 94 is threadedly connected to the mounting plate 91. When the fourth locking bolt 94 rotates, it allows the adjusting plate 93 to move away from the mounting plate 91, thereby sealing the ends of the first guide rail 1 and the second guide rail 2 that are far apart, preventing the lifting ring 8 from slipping.

[0049] Finally, the aforementioned telescopic rail includes multiple sets of mounting brackets 10, which are respectively snapped onto the top of the first guide rail 1 or the second guide rail 2, facilitating the installation and fixation of the first guide rail 1 and the second guide rail 2 through the mounting brackets 10.

[0050] An electric curtain includes an electric curtain telescopic track, wherein the curtain is connected to a mounting plate 91, a sliding body 71, and the bottom of multiple sets of hanging rings 8 via hooks.

[0051] In this embodiment, use a Phillips screwdriver to loosen the two sets of second locking bolts 34 on the collar 31. Hold the first guide rail 1 and the second guide rail 2 with both hands and gently adjust the telescopic rail to the required length. It is recommended to adjust the total length of the telescopic rail to the length of the curtain box minus 0.02 meters to 0.03 meters. If the length of the curtain box is 4.2 meters, then the total length of the telescopic rail needs to be adjusted to 4.17 meters to 4.18 meters.

[0052] If the telescopic rail is too long, hold the first guide rail 1 with one hand and gently pull the belt 64 outward with the other. As the belt 64 is pulled out, the length of the telescopic rail will gradually decrease until it reaches the desired length. If the telescopic rail is reduced too much, repeat the stretching steps. After adjusting the length of the telescopic rail to the appropriate size, tighten the two third locking bolts 74 in the pulley 7 with a Phillips screwdriver, and then tighten the two second locking bolts 34 on the collar 31.

[0053] Hold the belt 64 with one hand and use scissors to cut off the excess belt 64, so that the end of the belt 64 is positioned in the through hole 53 and between the fixed buckle 72 and the sliding buckle 73. Then, engage the limiting block 65 at the end of the belt 64, so that the trolley 7 moves and drives the belt 64 to move. Loosen the two first locking bolts 13 on the connecting piece 11 with a Phillips screwdriver, push the auxiliary transmission box 5 towards the first guide rail 1, so that the side of the auxiliary transmission box 5 is in close contact with the first guide rail 1 and the connecting piece 11, and tighten the two first locking bolts 13 on the connecting piece 11 with a Phillips screwdriver.

[0054] Loosen the two sets of second locking bolts 34 on the collar 31 using a Phillips screwdriver. Hold the first guide rail 1 and the second guide rail 2 on both sides of the connecting assembly 3 with both hands, and pull the telescopic rails to both sides to tension the belt 64. Observe the tension of the belt 64 at the same time. The belt 64 should be neither slack nor taut, but slightly taut. Gently push the trolley 7 with your fingers; the trolley 7 should move easily without jamming. Tighten the two sets of second locking bolts 34 on the collar 31 clockwise using a Phillips screwdriver. Slide the lifting rings 8 into the first guide rail 1 one by one from the slot in the auxiliary transmission box 5. The number of installations n = the final adjustment length of the telescopic rail (meters) * 4 - 1. For example, if the final adjustment length of the telescopic rail is 6 meters, then the number of lifting rings 8 installed at one end of the auxiliary transmission box 5 should be n = 6 * 4 - 1 = 23 (pieces). Loosen the fourth locking bolt 94 in the tensioner 9 with a Phillips screwdriver, maintaining a gap of 4mm to 8mm between the mounting plate 91 and the adjusting plate 93 of the tensioner 9. Push the tensioner 9 from the slot in the auxiliary transmission box 5 into the slot position, clamping the first guide rail 1 to the auxiliary transmission box 5. Loosen the fourth locking bolt 94 with a Phillips screwdriver. At the same time, slide the multiple sets of lifting rings 8 into the second guide rail 2 in the same way to complete the fixing of another set of tensioners 9.

[0055] After the lifting rings 8 in the first guide rail 1 and the second guide rail 2 are installed and their quantities are adjusted appropriately, the trolley 7 in the first guide rail 1 is pushed to the left side of the telescopic rail, pressing the lifting ring 8 in the first guide rail 1. At the same time, the other set of trolleys 7 moves to the right side of the telescopic rail, pressing the lifting ring 8 in the second guide rail 2. The trolleys 7 remain in their original positions. Then, gently push the two sets of trolleys 7 by hand. The two sets of trolleys 7 should slide flexibly within the rails without jamming or other defects.

[0056] Finally, use the metal clips of mounting bracket 10 to hook the ribs of the first guide rail 1 and the second guide rail 2. Gently press down on mounting bracket 10 until you hear a "click" sound, then shake mounting bracket 10 up and down to check if it is properly engaged. Simultaneously, ensure that the two sets of mounting brackets 10 are positioned next to the main drive box 4 and the auxiliary drive box 5, respectively, with the remaining positions arranged at equal intervals, and the distance between mounting brackets 10 ≤ 0.7 meters. Secure the telescopic rails with mounting brackets 10 along the marked line at the top of the curtain box using screws to complete the installation. Finally, the motorized curtain can be installed onto the mounting plate 91, the sliding body 71, and the bottom of the multiple sets of hanging rings 8 using hooks.

[0057] The above specific embodiments are merely optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. An electric curtain telescopic track, characterized in that, include: A first guide rail (1) is provided, and a second guide rail (2) is slidably connected to the first guide rail (1); A connecting component (3) is fixed to one end of the first guide rail (1) near the second guide rail (2), the connecting component (3) being used to lock the extension length of the second guide rail (2); The main transmission box (4) is installed on the end of the second guide rail (2) away from the first guide rail (1). The auxiliary transmission box (5) is provided on the end of the first guide rail (1) away from the second guide rail (2). The first guide rail (1), the second guide rail (2), the main transmission box (4) and the auxiliary transmission box (5) are provided with drive components (6). Two sets of trolleys (7) are slidably connected in the first guide rail (1) and the second guide rail (2) respectively, and both sets of trolleys (7) are connected to the drive assembly (6); Multiple sets of lifting rings (8), all of which are slidably connected in the first guide rail (1) or the second guide rail (2); Two sets of tensioners (9) are installed below the main transmission box (4) and the auxiliary transmission box (5), respectively. Multiple sets of mounting brackets (10) are respectively snapped onto the top of the first guide rail (1) or the second guide rail (2).

2. The electric curtain telescopic track according to claim 1, characterized in that, The connecting assembly (3) includes a collar (31) sleeved on the first guide rail (1) near the end of the second guide rail (2). The second guide rail (2) is slidably connected in the collar (31). A second fixing bolt (32) is provided on the top of the collar (31). The second fixing bolt (32) passes through the collar (31) and is threadedly connected to the first guide rail (1). A positioning plate (33) located inside the collar (31) is slidably connected on the second fixing bolt (32). The positioning plate (33) is located on the top of the second guide rail (2). Multiple sets of second locking bolts (34) are threadedly connected on the positioning plate (33). The second locking bolts (34) pass through the top of the collar (31).

3. The electric curtain telescopic track according to claim 2, characterized in that, A connecting pipe (51) is inserted into the side of the auxiliary transmission box (5) near the first guide rail (1). The connecting pipe (51) is slidably connected to the first guide rail (1). A third fixing bolt (52) is threaded into the connecting pipe (51). The third fixing bolt (52) passes through one side of the auxiliary transmission box (5). A through hole (53) is opened on the side of the connecting pipe (51). An end hook (54) is provided on the side of the main transmission box (4) that is far away from the auxiliary transmission box (5).

4. The electric curtain telescopic track according to claim 3, characterized in that, The first guide rail (1) is provided with a connecting piece (11) at one end near the auxiliary transmission box (5). The connecting piece (11) is provided with a first fixing bolt (12) which is threadedly connected to the first guide rail (1). The connecting piece (11) is also threadedly connected with multiple sets of first locking bolts (13).

5. The electric curtain telescopic track according to claim 4, characterized in that, The drive assembly (6) includes a rotating block (61) rotatably connected to the main transmission box (4). A gear ring (62) is fixedly connected to the outside of the rotating block (61). A gear (63) is rotatably connected to the auxiliary transmission box (5). A belt (64) is wound around the outside of the gear ring (62) and the gear (63). One end of the belt (64) is located on the side of the through hole (53) away from the first guide rail (1). The other end of the belt (64) extends through the through hole (53) to the outside of the first guide rail (1). A limit block (65) is installed on the belt (64).

6. The electric curtain telescopic track according to claim 5, characterized in that, The trolley (7) includes a sliding body (71) slidably connected to the first guide rail (1) or the second guide rail (2). The sliding body (71) is provided with multiple sets of rollers. The sliding body (71) is fixedly connected with a fixed buckle (72) and a sliding buckle (73). Both the fixed buckle (72) and the sliding buckle (73) are engaged with the belt (64). The limiting block (65) is located between the fixed buckle (72) and the sliding buckle (73).

7. The electric curtain telescopic track according to claim 6, characterized in that, Multiple sets of third locking bolts (74) are threaded through the sliding body (71), and the multiple sets of third locking bolts (74) are threaded together to a locking plate (75). The locking plate (75) is located inside the first guide rail (1), and a spring (76) is provided between the locking plate (75) and the sliding body (71).

8. The electric curtain telescopic track according to claim 7, characterized in that, The tensioner (9) includes a mounting plate (91), which is L-shaped. Fixing plates (92) are fixedly connected to both sides of the mounting plate (91). An adjusting plate (93) is provided between the two sets of fixing plates (92). A fourth locking bolt (94) is rotatably connected to the adjusting plate (93). The fourth locking bolt (94) is threadedly connected to the mounting plate (91).

9. An electric curtain, comprising an electric curtain telescopic track as described in any one of claims 1-8, characterized in that, The curtain is connected to the bottom of the mounting plate (91), the sliding body (71), and multiple sets of hanging rings (8) by hooks.

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