CN219699589U - Telescopic guide rail for curtain - Google Patents

Abstract

The utility model belongs to the technical field of curtains, and particularly relates to a curtain telescopic guide rail. The serpentine curtain limiting mechanism is detachably arranged on the curtain hanging wheels and is used for limiting the moving distance of two adjacent curtain hanging wheels in the axial direction to form a serpentine curtain. The curtain hanging wheel can be flexibly and conveniently switched between a common curtain and a snake-shaped curtain, and can be suitable for curtains of the snake-shaped curtain and non-snake-shaped curtains. On the other hand, the curtain hanging wheel can be used as a multipurpose standard component, and the curtain guide rail of both the snake-shaped curtain and the non-snake-shaped curtain can be used. The user does not need to worry about buying the wrong curtain hanging wheel, and the method also provides great convenience for after-sales, and can save investment of manufacturers. In addition, when the single-opening mode and the double-opening mode of the curtain guide rail are required to be switched, one of the two curtain pulleys is movably connected or fixedly connected with the driving belt through the locking mechanism, so that the single-opening mode and the double-opening mode are switched.

Description

Telescopic guide rail for curtain

Technical Field

The utility model belongs to the technical field of curtains, and particularly relates to a curtain telescopic guide rail.

Background

The serpentine curtain is called a water wave curtain, and the curtain hanging wheels on the curtain guide rail are treated at equal intervals, so that the serpentine wave curtain is named after the curtain is hung and buckled. Serpentine curtains are favored by young consumers in a square-shaped configuration and with unique and elegant lines, as compared to conventional curtains that are stiff, stiff and irregularly shaped. The curtain hanging wheels of the snake-shaped curtain are generally connected between all curtain hanging wheels in sequence through a limiting mechanism (such as a snake-shaped curtain rope, a limiting cloth belt and the like), so that the curtain hanging wheels are equidistant, the length of the curtain connected between the two curtain hanging wheels is larger than that of the snake-shaped curtain rope between the two curtain hanging wheels, the curtain is enabled to be bent and wrinkled in a snake-shaped wavy mode in sequence between the curtain hanging wheels, the snake-shaped curtain rope and the curtain hanging wheels are generally integrally formed, and the snake-shaped curtain with the structure is difficult to switch into a common curtain. The common curtain is generally used for installing a curtain through the hanging ring, and the curtain is correspondingly provided with the mounting ring which is connected with the hanging ring in series so as to install the curtain on the hanging ring; when the curtain is in an open state: the part of curtain folded between the next hanging rings can be pulled after the part of curtain of the two hanging rings is tightly stretched under the drive of the driving mechanism, so that the serpentine curtain cannot be realized by the hanging ring structure.

Prior art curtains are typically either single serpentine curtains or single non-serpentine curtains that cannot flexibly meet the various needs of the customer, such as consumers sometimes want the serpentine curtain to be replaced with a normal curtain or switch from a normal curtain to a serpentine curtain. The serpentine curtain with the structure is difficult to be switched into a common curtain. On the other hand, for manufacturers, the curtain hanging wheels of the serpentine curtain and the common curtain are designed and generate two different patterns, and more cost is required for the manufacturers.

The single-opening mode of the curtain guide rail means that one curtain cloth is connected with one curtain pulley, and the curtain pulley moves far in the axial direction of the curtain guide rail to fold or open one curtain cloth to realize curtain opening and closing; the double-opening mode of the curtain guide rail means that two curtain cloths are respectively connected with the two curtain pulleys, and the curtain cloth connected with the two curtain pulleys is respectively folded or unfolded to realize the opening and the closing of the curtain by the axial opposite or back movement of the two curtain pulleys on the curtain guide rail. However, the existing curtain rail is one of a single-open mode and a double-open mode, and the user cannot switch to the double-open mode after buying the curtain rail in the single-open mode, or cannot switch to the single-open mode after buying the curtain rail in the double-open mode, i.e. the existing curtain rail cannot flexibly switch between the two modes.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a curtain telescopic guide rail. The serpentine curtain limiting mechanism is detachably arranged on the curtain hanging wheels and used for limiting the moving distance of two adjacent curtain hanging wheels in the axial direction to form a serpentine curtain. The curtain hanging wheel can be flexibly and conveniently switched between a common curtain and a snake-shaped curtain, and can be suitable for curtains of the snake-shaped curtain and non-snake-shaped curtains. On the other hand, the curtain hanging wheel can be used as a multipurpose standard component, and the curtain guide rail of both the snake-shaped curtain and the non-snake-shaped curtain can be used. The user does not need to worry about buying the wrong curtain hanging wheel, and the method also provides great convenience for after-sales, and can save investment of manufacturers. In addition, when the single-opening mode and the double-opening mode of the curtain guide rail are required to be switched, one of the two curtain pulleys is movably connected or fixedly connected with the driving belt through the locking mechanism, so that the single-opening mode and the double-opening mode are switched.

The utility model provides a curtain telescopic guide rail, which comprises a first guide rail, a second guide rail, a driving belt, two curtain pulleys, a plurality of curtain hanging wheels and a serpentine curtain limiting mechanism, wherein the first guide rail and the second guide rail are in telescopic connection, the driving belt is movably arranged in the first guide rail and the second guide rail in a penetrating manner, the curtain pulleys are connected with the driving belt, the curtain hanging wheels can be connected to the first guide rail and/or the second guide rail in a sliding manner, the curtain hanging wheels are sequentially arranged on the first guide rail and/or the second guide rail along the axial direction, and the serpentine curtain limiting mechanism is detachably arranged on the curtain hanging wheels and is used for limiting the moving distance of two adjacent curtain hanging wheels along the axial direction; at least one of the two curtain slides is connected with a locking mechanism which has a locking state and an unlocking state, and the locking mechanism can be fixedly connected with the driving belt when in the locking state; the locking mechanism is movably connected with the driving belt when in a release state.

Preferably, the locking mechanism comprises a locking member connected with the driving belt and a driving member with one end connected with the locking member, wherein the other end of the driving member is exposed compared with the first guide rail and the second guide rail, the locking member is driven to move along the axial direction by the exposed part of the driving member, and the locking mechanism is in a locking state when the locking member moves along one direction; the locking mechanism is in an unlocked state when the locking member is moved in the other direction.

Preferably, the curtain pulley comprises a pulley body and a sliding through hole penetrating through the pulley body, the locking parts penetrate through the sliding through hole, the locking mechanism further comprises two sliding connecting parts, the upper ends of the two sliding connecting parts are respectively connected with the locking parts, the lower ends of the two sliding connecting parts are connected with the driving parts, the driving parts are hinged with the pulley body, the lower ends of the driving parts can swing left and right around the hinged parts along the axial direction, the two locking parts are driven to approach or depart from each other along the axial direction, the locking mechanism is in a locking state or a releasing state, the bottoms of the first guide rail and the second guide rail are provided with sliding openings extending along the axial direction, and the lower ends of the driving parts are extended out of the sliding openings and are exposed.

Preferably, the sliding through hole limits the movement of the locking piece in the up-down and left-right directions, and the pulley body is also provided with a limiting slide rail in sliding connection with the sliding connecting piece, and the limiting slide rail limits the movement of the sliding connecting piece in the up-down and left-right directions; the sliding connecting piece is provided with pushing grooves extending along the up-down direction respectively, the driving piece is provided with two pushing columns which face towards and are matched with the pushing grooves respectively, when the driving piece swings left and right, the two pushing columns push the two sliding connecting pieces to be close to or far away from each other along the left-right direction respectively, and the two pushing columns move up and down respectively.

Preferably, the curtain pulley further comprises a pulley body and a pressing plate arranged on the pulley body, the locking piece is slidably connected to the pulley body, a pressing block which is spaced from the pressing plate front and back is formed on the locking piece, anti-slip saw teeth are arranged on one side, close to the pressing block of the driving piece, of the pressing plate, the anti-slip saw teeth are used for being meshed with the driving belt, and when the curtain pulley is in a locking state, the locking piece moves the curtain driving piece to the anti-slip saw teeth along the front and back directions.

Preferably, the locking piece is an elastic component and is detachably connected with the driving belt, the locking piece is further provided with a positioning channel for the driving belt to pass through, the positioning channel axially penetrates through the rear end of the locking piece, the front end of the locking piece is further provided with a mounting opening for mounting the driving belt, the mounting opening is communicated with the positioning channel on the locking piece, the mounting opening has an open state and a tightening state, and the driving belt can be placed in the positioning channel or the driving belt positioned in the positioning channel can be removed when the locking piece is in the open state; when in a tightening state, the mounting opening limits the transmission belt.

Preferably, the telescopic guide rail of the curtain further comprises a mounting seat, the mounting seat is detachably connected with the first guide rail and/or the second guide rail, an exposed area is formed when the mounting seat is separated from the first guide rail and/or the second guide rail along a connecting position and relatively moves along an axial direction, the locking mechanism is detachably connected with the driving belt, and the curtain pulley can be moved to the exposed area when the locking mechanism is in a released state; when the double-opening mode is switched to the single-opening mode, the curtain pulley can be detached from the transmission belt in the exposed area; when the single-open mode is switched to the double-open mode, the curtain pulley can be mounted on the driving belt in the exposed area.

Preferably, the mounting seat is connected with the first guide rail and/or the second guide rail in a pluggable manner, and the mounting seat is also connected with the driving belt; the mounting seat can form the exposed area when being pulled out from the first guide rail and/or the second guide rail, and the first guide rail and the second guide rail are shortened or the transmission belt in the first guide rail and the second guide rail is prolonged and exposed; when the mounting seat is spliced with the first guide rail and/or the second guide rail, the first guide rail and the second guide rail are extended or the driving belt in the first guide rail and the second guide rail is shortened, and the first guide rail and the second guide rail or the driving belt are reset.

Preferably, the first guide rail is telescopically inserted into the second guide rail, sliding openings are formed in the bottoms of the first guide rail and the second guide rail, the sliding openings of the first guide rail and the second guide rail are communicated, the lower ends of the curtain pulley and the curtain hanging wheel extend downwards along the sliding openings, and the curtain pulley and the curtain hanging wheel can move to the exposed area along the sliding openings; the lower end of the locking mechanism extends out of the sliding opening and is exposed, and the lower end of the locking mechanism is triggered to enable the locking mechanism to be in a locking state or an unlocking state.

Preferably, the curtain hanging wheel and the curtain pulley are provided with inserting grooves, the snakelike curtain limiting mechanism further comprises a plurality of inserting pieces and snakelike curtain ropes, the inserting pieces are sequentially arranged along the axial direction, one ends of the inserting pieces are fixedly connected with the snakelike curtain ropes, and the other ends of the inserting pieces can be inserted into the inserting grooves in a pluggable mode.

Drawings

The foregoing and other objects, features and advantages of the utility model will be apparent from the following more particular description of preferred embodiments of the utility model, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intentionally drawn to scale on actual size or the like, with emphasis on illustrating the principles of the utility model.

FIG. 1 is a schematic view of a window covering sled mated with a drive belt and a locking mechanism in a locked condition;

FIG. 2 is a top view of FIG. 1;

fig. 3 is a front view of fig. 1.

FIG. 4 is a front view of the locking mechanism in an unlocked state;

FIG. 5 is a top view of the locking mechanism in an unlocked state;

FIG. 6 is a rear view of the slide connector and the driver mated in a locked condition;

FIG. 7 is a schematic view of the structure of the locking member;

FIG. 8 is a schematic diagram of a combination of curtain hanging wheels, curtain pulleys and serpentine curtain spacing mechanisms;

FIG. 9 is a rear view of the curtain suspension wheel;

fig. 10 is a bottom view of the curtain suspension wheel;

FIG. 11 is a schematic view of the structure of FIG. 9 with the serpentine curtain stop mechanism omitted;

fig. 12 is a schematic structural view of a telescopic rail of the window curtain in the double-open mode according to the embodiment;

FIG. 13 is a partial view of the window covering telescoping rail in the dual-open mode;

Fig. 14 is a schematic view of the structure with the mount separated to form an exposed area.

The attached drawings are identified: the curtain hanging wheel 1, a hanging wheel main body 100, a hanging ring assembly 101, a hanging ring 101b, a snake-shaped curtain installation position 102, a plug-in groove 102a, a plug-in port 102b, a first avoidance port 102c, a snake-shaped curtain limiting mechanism 103, a plug-in piece 103a, a plug-in part 103b, a snake-shaped curtain rope 103c and a guide rail connecting part 104; a curtain pulley 2; curtain pulley 2, pulley body 200, positioning channel 201, sliding through hole 202, locking mechanism 204, locking piece 205, positioning back-off 205a, positioning baffle 205b, mounting opening 205c, press block 205d, sliding connector 206, pushing slot 206a, driving piece 207, pushing column 207a, hinge shaft 207b, press plate 208, anti-slip saw tooth 208a, limit slide rail 209, sliding support plate 209a, L-shaped limit baffle 209b, and clamping slot 210; a transmission belt 3; mount 4, exposed area 401, slide opening 501, first rail 502, second rail 503.

Detailed Description

In order that the utility model may be understood more fully, the utility model will be described with reference to the accompanying drawings.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to and integrated with the other element or intervening elements may also be present. The terms "mounted," "one end," "the other end," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-14, the present utility model provides a telescopic curtain rail, which includes a first rail 502, a second rail 503, a driving belt 3, two curtain pulleys 22, a plurality of curtain pulleys 1 and a serpentine curtain limiting mechanism 103, wherein the first rail 502 is telescopically connected with the second rail 503, the driving belt 3 is movably arranged in the first rail 502 and the second rail 503, the curtain pulleys 22 are connected with the driving belt 3, the curtain pulleys 22 are slidably connected on the first rail 502 and/or the second rail 503, the plurality of curtain pulleys 1 are slidably connected on the first rail 502 and/or the second rail 503, for example, in a double-opening mode, the two curtain pulleys 22 are respectively slidably connected on the first rail 502 and the second rail 503, and the plurality of curtain pulleys 1 are also respectively slidably connected on the first rail 502 and the second rail 503; in the single-open mode, one curtain runner 22 and a plurality of curtain runners 1 can move back and forth between the first rail 502 and the second rail 503 when the curtains are opened and closed. The curtain hanging wheels 1 are sequentially arranged on the first guide rail 502 and the second guide rail 503 along the axial direction, and the serpentine curtain limiting mechanism 103 is detachably arranged on the curtain hanging wheels 1 and used for limiting the moving distance of two adjacent curtain hanging wheels 1 along the axial direction; at least one of the two curtain slides is connected with a locking mechanism 204, the locking mechanism 204 has a locking state and an unlocking state, and the locking mechanism 204 can be fixedly connected with the driving belt 3 when in the locking state; the locking mechanism 204 is movably connected with the driving belt 3 when in an unclamped state; the two curtain pulleys 22 are respectively and fixedly connected with the driving belt 3 to enable the curtain telescopic guide rail to be in a double-opening mode; or one of the two curtain slides is movably connected with the driving belt 3 through the locking mechanism 204, and the other curtain slide is fixedly connected with the driving belt 3 so that the curtain telescopic guide rail is in a single-open mode. The telescopic guide rail of the curtain can adopt CN216569491U (a telescopic curtain guide rail) outer rail to be sleeved outside the inner rail and be movably spliced to realize the telescopic effect, and also can adopt CN212234070U (a telescopic curtain guide rail) to realize the telescopic effect of the first guide rail 502 and the second guide rail 503 by arranging the first guide rail 502 and the second guide rail 503 side by side in parallel or in other forms. The serpentine curtain limiting mechanism 103 is detachably mounted on the curtain hanging wheels 1 and is used for limiting the distance between two adjacent curtain hanging wheels 1 moving in the axial direction to form a serpentine curtain. The curtain hanging wheel 1 can be flexibly and conveniently switched between a common curtain and a snake-shaped curtain, and can be suitable for the curtains of the snake-shaped curtain and the non-snake-shaped curtain. On the other hand, the curtain hanging wheel 1 can be used as a multipurpose standard component, and the curtain telescopic guide rail of both the snake-shaped curtain and the non-snake-shaped curtain can be used. The user does not need to worry about buying the wrong curtain hanging wheel 1, and also provides great convenience for after-sales, and can save investment of manufacturers. In addition, when the single-opening mode and the double-opening mode of the window curtain telescopic guide rail are required to be switched, at least one of the two window curtain pulleys 22 is movably connected or fixedly connected with the driving belt 3 through the locking mechanism 204, so that the single-opening mode and the double-opening mode are switched.

When in the double-on mode: the two curtain pulleys 2 are connected with a driving belt 3, the driving belt 3 can drive the two curtain pulleys 2 to move along the first guide rail 502 and the second guide rail 503 in the axial direction or back direction, the left side and the right side of the two curtain pulleys 2 are respectively provided with a curtain hanging wheel 1, the left curtain pulley 2 and the curtain hanging wheel 1 are connected with a curtain, the right curtain pulley 2 and the curtain hanging wheel 1 are connected with a curtain, and when the curtain pulleys move in the opposite direction or back direction, the curtain curtains are driven to move in the opposite direction or back direction; when the two curtain curtains move in opposite directions, the two curtain curtains change from a folded state to an unfolded state, so that the curtain curtains are closed and shading is realized; when the two curtain curtains move back to back, the two curtain curtains change from an unfolding state to a folding state, so that the curtain curtains are unfolded and light transmission is realized. When the double-opening mode is switched to the single-opening mode, the mounting seat 4 is separated from the first guide rail 502 or the second guide rail 503, and the driving belt 3 is pulled out by a certain distance to form an exposed area 401 for the curtain pulley 2 to be disassembled (the curtain is disassembled before or after the curtain pulley is disassembled); the curtain hanging wheel 1 can move out of the exposed area 401 through the sliding opening 501 of the first guide rail 502 or the second guide rail 503; the curtain pulley 2 positioned in the guide rail triggers the locking mechanism 204 through the locking piece 205, the locking mechanism 204 is changed from a locking state to an unlocking state, the driving belt 3 and the curtain pulley 2 can relatively move, and the curtain pulley 2 moves from the sliding opening 501 to the exposed area 401 for disassembly; when the curtain pulley 2 and the locking mechanism 204 are completely detached from the driving belt 3, the mounting seat 4 is mounted on one end of the first guide rail 502 or the second guide rail 503 again, so that the whole double-opening mode is switched to the single-opening mode. When the single-opening mode is switched to the double-opening mode, the mounting seat 4 is firstly separated from the first guide rail 502 or the second guide rail 503, and the driving belt 3 is pulled out for a certain distance to form an exposed area 401 for mounting the curtain pulley 2, at the moment, the curtain pulley 2 can be fixed at different positions of the driving belt 3 through the locking state or the loosening state of the locking mechanism 204, so that the relative positions of the two curtain pulleys 2 in the driving belt 3 are adjusted, and the curtain pulleys 2 can be better driven to open and close when in the double-opening mode; based on this and knowing that the two-on mode is switched to the one-on mode, it will be apparent to those skilled in the art that the one-on mode is switched to the two-on mode, and will not be further described herein. In some embodiments, when the single-opening mode is switched to the double-opening mode, the locking mechanism 204 is released, the curtain runner 2 connected with the locking mechanism 204 is moved to one side of the first guide rail 502 or the second guide rail 503, and the single-opening mode can be realized without removing the curtain runner 2, and the double-ended openable curtain capable of being switched between the single-opening mode and the double-opening mode can be referred to as CN 218457883U.

Referring to fig. 8-11, when in use, the curtain pulley 2 and the curtain hanging wheels 1 can be installed in the first guide rail 502 and the second guide rail 503, the hanging ring 101b on the curtain hanging wheel 1 is exposed compared with the first guide rail 502 and the second guide rail 503, the curtain pulley 2 is provided with a curtain installing hole 201 for installing a curtain fabric (not shown in the drawing of the specification) which is exposed compared with the first guide rail 502 and the second guide rail 503, the curtain fabric is provided with installing rings correspondingly, the first installing ring of the general curtain fabric is installed in the curtain installing hole 201, other installing rings are connected with the hanging ring in series to install the curtain on the hanging ring, the curtain pulley 2 is also connected with the driving belt 3, the driving belt 3 is connected with the driving mechanism, the curtain pulley 2 is driven by the driving belt 3 to move along the axial direction, and the curtain pulley 2 can sequentially drive the curtain fabric connected with the curtain hanging wheels 1 to realize the opening and closing of the curtain.

When a common window covering is needed: the serpentine curtain mounting location 102 has no serpentine curtain stop mechanism and serpentine curtain cords mounted thereon. When the curtain is opened, the curtain pulley 2 drives curtain curtains on the first hanging ring 101b to gradually expand and tighten curtain curtains between the curtain pulleys from a folded state, the tightened curtain curtains can drag the next hanging ring 101b and the curtain curtains corresponding to the folded curtain curtains, then the curtain pulley 2 continues to move to drive the curtain curtains on the second hanging ring 101b and the second hanging ring 101b, the curtain curtains between the second hanging ring 101b and the first hanging ring 101b are gradually expanded and tightened from the folded state, then the curtain pulley 2 continues to move to drive the third hanging ring 101b, and the other curtain curtains are sequentially analogized until the curtain is completely opened.

When a serpentine curtain is desired: the serpentine curtain mounting position 102 is provided with a serpentine curtain limiting mechanism 103 and a serpentine curtain rope 103c (refer to fig. 8), the serpentine curtain rope 103c is sequentially connected to the curtain pulley 2 and each hanging wheel main body 100, and meanwhile, the curtain is sequentially connected to the curtain pulley 2 and each hanging wheel main body 100, but the length of the serpentine curtain rope 103c connected with the first adjacent hanging wheel main body 100 of the curtain pulley 2 is smaller than the length of the curtain connected with the two adjacent hanging wheel main bodies 100, and the length of the serpentine curtain rope 103c connected with the two adjacent hanging wheel main bodies 100 is smaller than the length of the curtain connected with the two adjacent hanging wheel main bodies 100; when the curtain pulley 2 moves leftwards, dragging the curtain cloth and the snake-shaped curtain ropes 103c between the first hanging wheel main body 100 and the curtain pulley 2, when the snake-shaped curtain ropes 103c between the first hanging wheel main body 100 and the second hanging wheel main body are completely tightened, the curtain cloth between the first hanging wheel main body 100 and the second hanging wheel main body is partially unfolded to form an arc section, and at the moment, the curtain pulley 2 can drag the snake-shaped curtain ropes 103c and the curtain cloth between the second hanging wheel main body 100 and the first hanging wheel main body 100 through the snake-shaped curtain ropes 103c, and when the snake-shaped curtain ropes 103c between the second hanging wheel main body 100 and the first hanging wheel main body are completely tightened, the curtain cloth between the second hanging wheel main body 100 and the first hanging wheel main body is partially unfolded to form an arc section; by analogy with each other, the curved curtain between the pulley bodies 100 may form a regular serpentine curtain.

Referring to fig. 1-7 and 12-14, in a preferred embodiment, the locking mechanism 204 includes a locking member 205 connected to the driving belt 3, and a driving member 207 having one end connected to the locking member 205, wherein the other end of the driving member 207 is exposed compared to the first rail 502 and the second rail 503, and the locking member 205 is driven to move along the axial direction by the exposed portion of the driving member 207, and the locking mechanism 204 is in a locked state when the locking member 205 moves along one of the directions; the locking mechanism 204 is in an unlocked state when the locking member 205 is moved in the other direction. The locking member 205 is driven by the exposed portion of the driving member 207, which is more convenient to operate and does not require separate disassembly of the first rail 502 and the second rail 503. Moreover, since the locking member 205 can move left and right along the axis, the operation of moving left and right can be well matched with the sliding opening 501 of the guide rail extending left and right, so that a better operation space is provided, for example, when the locking member 205 extends out of the first guide rail 502 and the second guide rail 503 along the sliding opening 501, the locking member 205 can be manually moved along the left and right direction of the sliding opening 501 to realize locking or unlocking; or by means of a tool extending from the sliding opening 501 into the first 502 and second 503 guide rails to move the locking member 205 left and right, which may have the advantage of a pulley to separate and lock the belt in the first 502 and second 503 guide rails. Further, the bottoms of the first guide rail 502 and the second guide rail 503 are respectively provided with a sliding opening 501 extending along the axial direction, and the lower end of the driving member 207 extends out of the sliding opening 501 and is exposed. The curtain pulley 22 includes a positioning channel 201 through which the driving belt 3 passes, and a locking mechanism 204 capable of positioning the driving belt 3 in the positioning channel 201, wherein the positioning channel 201 may be a through hole passing through the locking member 205 and other areas of the curtain pulley 22, and the channels are formed in combination, for example, the positioning channel 201 includes the through hole of the locking member 205 and an area between the pressing plate 208 and the pressing block 205 d. The locking mechanism 204 is in a locking state and positions the driving belt 3 in the positioning channel 201; the locking mechanism 204 is in an unclamped state, and the driving belt 3 and the positioning channel 201 can relatively move.

Referring to fig. 1-7 and 12, in a preferred embodiment, the locking mechanism 204 further includes a driving member 207 connected to the locking member 205, where the driving member 207 can drive the locking member 205 to move along the axial direction of the positioning channel 201; the curtain pulley 2 is further provided with a guide rail connecting portion, and the guide rail connecting portion is used for slidably mounting the curtain pulley 2 in the sliding of the first guide rail 502 and the second guide rail 503, and when the locking mechanism 204 is in the locked state or the unlocked state, the end portion of the lower end of the driving member 207 is lower than the guide rail connecting portion. The guide rail connecting parts are positioned at the front side and the rear side of the curtain pulley 2, when the curtain pulley 2 is installed in the first guide rail 502 and the second guide rail 503, the guide rail connecting parts are respectively positioned at the front end and the rear end of the sliding opening and are abutted on the bottom walls of the first guide rail 502 and the second guide rail 503, at the moment, the part of the curtain pulley 2 below the guide rail connecting parts is exposed compared with the parts of the first guide rail 502 and the second guide rail 503, the lower end part of the driving part 207 is lower than the guide rail connecting parts no matter in a locking state or a loosening state, the lower end part of the driving part 207 is ensured to be outside the first guide rail 502 and the second guide rail 503, so that the locking and the loosening operations of the pulley on a belt in the first guide rail 502 and the second guide rail 503 are convenient.

Referring to fig. 1, in a preferred embodiment, a sliding through hole 202 penetrating through the front and rear surfaces of the curtain pulley 2 is formed on the curtain pulley 2, the sliding through hole 202 extends in the left-right direction, one end of a locking member 205 is slidably inserted into the sliding through hole 202, the front and rear ends of the locking member 205 are exposed respectively compared with the front and rear openings of the sliding through hole 202, a positioning channel 201 penetrates through one of the exposed portions of the front and rear ends of the locking member 205, the upper end of a driving member 207 is connected with the other exposed portion, and the lower end of the driving member 207 can rotate in the left-right direction to drive the locking member 205 to move along the axial direction of the positioning channel 201. The sliding through holes 202 and the locking pieces 205 penetrate through the front end and the rear end of the curtain pulley 2, so that the part of the locking pieces 205 used for locking the belt and the mechanism used for driving the locking pieces 205 to move can be respectively arranged on the front side and the rear side of the curtain pulley 2, and the whole volume is not increased when the locking pieces 205 are driven in reality.

Referring to fig. 1 and 7, in a preferred embodiment, a positioning back-off 205a and a positioning baffle 205b are respectively disposed at front and rear openings of the sliding through hole 202, the positioning back-off 205a and the positioning baffle 205b respectively limit the front and rear movement of the locking member 205 along the sliding through hole 202, when the positioning back-off 205a is inserted into the sliding through hole 202 along an opening at one end of the sliding through hole 202, the positioning back-off 205a can be contracted in the up-down direction, and after the positioning back-off 205a passes through another opening of the sliding through hole 202, the positioning back-off 205a can be unfolded in the up-down direction, so that the positioning back-off 205a limits the sliding through hole 202. The design of the positioning back-off 205a and the positioning baffle 205b is convenient for installing the locking piece 205 on the sliding through hole 202 or separating the pulley body 200 from the transmission belt 3 on one hand; on the other hand, the locking piece 205 can only move along one end of the sliding through hole 202 in the left-right direction, so that the locking piece cannot move back and forth in the use process.

Referring to fig. 1 to 4, in a preferred embodiment, the curtain pulley 2 includes a pulley body 200 and a sliding through hole 202 penetrating the pulley body 200, the locking mechanism 204 includes two locking members 205 penetrating the sliding through hole 202, two sliding connecting members 206 with upper ends connected to the two locking members 205 respectively, and a driving member 207 with upper ends connected to lower ends of the two sliding connecting members 206 respectively, the driving member 207 and the sliding connecting members 206 are on one side of the pulley body 200, the driving member 207 is hinged with the pulley body 200, generally through a hinge shaft 207b, the lower ends can swing left and right around the hinge, and the driving member 207 drives the two locking members 205 to approach or separate from each other along the axial direction of the positioning channel 201 when swinging left and right. The two limiting slide rails 209 are respectively composed of two sliding support plates 209a and a plurality of L-shaped limiting baffles 209b, the two sliding support plates 209a are arranged at intervals in an up-down staggered manner, the two sliding support plates 209a respectively support the bottoms of the two sliding connecting pieces 206, then the L-shaped limiting baffles 209b are arranged above and/or below the two sliding connecting pieces 206, one end of each L-shaped limiting baffle 209b is connected with the pulley body 200, and the other end of each L-shaped limiting baffle is positioned outside the two sliding connecting pieces 206 and overlapped in the front-back direction so as to limit the movement of the sliding connecting piece 206 along the front-back direction; the upper and lower surfaces between the two L-shaped limit stops 209b are also paired to limit the sliding connection 206 in the up-down direction. Further, the pulley body 200 is further provided with a clamping groove 210 matched with the lower end of the driving member 207, so as to facilitate the fixing of the driving member 207.

Referring to fig. 6, in a preferred embodiment, the sliding through hole 202 limits the movement of the locking member 205 in the up-down and left-right directions, and the pulley body 200 is further provided with a limiting slide rail 209 slidably connected to the sliding connecting member 206, where the limiting slide rail 209 limits the movement of the sliding connecting member 206 in the up-down and left-right directions; the sliding connection members 206 are respectively provided with pushing grooves 206a extending in the up-down direction, the driving member 207 is provided with two pushing posts 207a respectively facing and matching with the pushing grooves 206a, when the driving member 207 swings left and right, the two pushing posts 207a respectively push the two sliding connection members 206 to approach or separate from each other in the left-right direction, and the two pushing posts 207a respectively move up and down in the two pushing grooves 206 a. By the mutual cooperation of the pushing post 207a and the pushing groove 206a, the rotation force of the driving member 207 can be converted into a pushing force pushing the driving member 207 in the left-right direction, and convenience of locking and unlocking operations is ensured.

Referring to fig. 1 and 7, in the preferred embodiment, the locking member 205 is an elastic member, the positioning channel 201 penetrates the rear end of the locking member 205 along the left-right direction, the front end of the locking member 205 is further provided with a mounting opening 205c for mounting the driving belt 3, the mounting opening 205c is communicated with the positioning channel 201 on the locking member 205, the mounting opening 205c has an open state and a tightened state, and when in the open state, the driving belt can be placed in the positioning channel 201 or the driving belt located in the positioning channel 201 can be removed; in the tightened state, the mounting opening 205c limits the belt. The mounting opening 205c is connected in communication with the positioning passage 201 and penetrates the locking member 205 such that the front end of the locking member 205 is divided by the mounting opening 205c into an upper portion and a lower portion having a gap, the upper portion and the lower portion being movable toward and away from each other in the up-down direction, the gap being narrowed when the gap is smaller near the mounting opening 205c and being opened when the gap is larger far from the mounting opening 205 c; when the driving belt is required to be installed in the positioning channel 201, the sawtooth surface of the driving belt 3 can be inserted into the installation opening 205c in a flat-up posture, the installation opening 205c is gradually opened, when the driving belt 3 stretches into the positioning channel 201, the sawtooth surface of the driving belt 3 is re-perpendicular, at the moment, the installation opening 205c is tightened, and at the moment, the installation of the installation locking piece 205 and the driving belt can be completed; when the two are separated, the mounting opening 205c is opened, and the face of the belt with saw teeth is gradually inclined along the horizontal direction, so that the belt saw teeth slide out of the opening mounting opening 205c in a posture of being flat upwards. Of course, on the other hand, the positioning back-off 205a is respectively provided with an upper portion and a lower portion of the front end of the locking member 205, and the two positioning back-off 205a can be extended and retracted along the up-down direction, and the pulley body 200 can be detachably mounted with the locking member 205 by matching the positioning back-off 205a with the sliding through hole 202.

Referring to fig. 1, 2 and 5, in a preferred embodiment, a pressing block 205d is disposed on one side of the positioning channel 201, a pressing plate 208 is disposed on the other side of the positioning channel 201, an anti-slip saw tooth 208a engaged with the driving belt is disposed on one side of the pressing plate 208 facing the pressing block 205d, when the locking member 205 moves left and right along the axial direction of the positioning channel 201, the pressing plate 208 moves the driving belt to the anti-slip saw tooth 208a along the front and back direction, and the anti-slip saw tooth 208a on the pressing plate 208 cooperates with the saw tooth on the driving belt to play a role of anti-slip.

Referring to fig. 1-7, and 12-14, in the preferred embodiment, the telescopic rail for curtain further includes a mounting base 4, the mounting base 4 is detachably connected to the first rail 502 and the second rail 503, the mounting base 4 is separated from the first rail 502 and the second rail 503 along the connection and forms an exposed area 401 when relatively moving along the axial direction, the locking mechanism 204 is detachably connected to the driving belt 3, and the curtain pulley 22 is movable to the exposed area 401 when the locking mechanism 204 is in a released state; when the double-opening mode is switched to the single-opening mode, the curtain pulley 22 can be detached from the driving belt 3 in the exposed area 401; when the single-open mode is switched to the double-open mode, the curtain runner 22 may be mounted to the belt 3 in the exposed area 401. The mount 4 is detachably connected to the first rail 502 and the second rail 503. When the single-opening mode and the double-opening mode of the window curtain telescopic guide rail are required to be switched, the mounting seat 4 is separated from the joint and moves relatively along the axial direction, so that an exposed area 401 is formed between the mounting seat and the window curtain pulley 22, the window curtain pulley 22 can be exposed in the exposed area 401, the window curtain pulley 22 can be detached from the driving belt 3 in the exposed area 401, or the window curtain pulley 22 can be mounted on the driving belt 3 in the exposed area 401, and therefore the switching between the single-opening mode and the double-opening mode is completed. Furthermore, the mounting seat 4 is separated from the edge to form an exposed area 401, and the curtain pulley 22 and the driving belt 3 are mounted and dismounted in the exposed area 401, so that the operation is more convenient.

In a preferred embodiment, the mounting seat 4 is connected with the first guide rail 502 and the second guide rail 503 in a pluggable manner, and the mounting seat 4 is also connected with the driving belt 3; the mounting seat 4 can form an exposed area 401 when being pulled out from the first guide rail 502 and the second guide rail 503, and the first guide rail 502 and the second guide rail 503 are shortened or the driving belt 3 in the first guide rail 502 and the second guide rail 503 is extended and exposed; when the mounting seat 4 is inserted into the first guide rail 502 and the second guide rail 503, the first guide rail 502 and the second guide rail 503 are extended or the driving belt 3 in the first guide rail 502 and the second guide rail 503 is shortened, and the first guide rail 502 and the second guide rail 503 or the driving belt 3 are reset. In this embodiment, the first guide rail 502 and the second guide rail 503 may adopt a telescopic connection of curtain guide rails in CN215015974U, CN215777157U or CN112869524a and a belt surrounding mode, when the mounting seat 4 is pulled out to form the exposed area 401, either the first guide rail 502 and the second guide rail 503 are shortened, or the driving belt 3 folded in the guide rails is extended; then, when the guide rails of the mounting seat 4 are spliced again, either the first guide rail 502 and the second guide rail 503 are extended to reset, or the driving belt 3 folded in the guide rails is folded to shorten to reset, so that the driving belt 3 is tensioned again, and the first guide rail 502 and the second guide rail 503 are relatively fixed to be in a normal use state continuously.

Referring to fig. 12-14, in a preferred embodiment, the first guide rail and the second guide rail are respectively an inner guide rail and an outer guide rail with one end sleeved outside the inner guide rail, the first guide rail 502 and the second guide rail 503 can stretch in the axial direction, two mounting seats 4 are respectively provided for mounting one end of the first guide rail 502 and one end of the second guide rail 503 away from the junction of the two guide rails in a pluggable manner, the pluggable manner is easier to mount, the telescopic curtain guide rail further comprises a driving wheel, a driven wheel, a first fixed pulley, a second fixed pulley and two mounting seats 4, the driving wheel and the driven wheel are respectively mounted in the two mounting seats 4, the two mounting seats 4 are respectively provided for mounting one end of the first guide rail 502 and one end of the second guide rail 503 away from the junction of the two guide rails in a pluggable manner, and the first fixed pulley and the second fixed pulley are respectively positioned at the other end of the inner rail and the outer rail; the driving wheel and the first fixed pulley are positioned at two ends of the inner rail or the outer rail at the same time, and the first fixed pulley and the second fixed pulley are positioned at the same side of the first guide rail 502 and the second guide rail 503; the driving belt 3 is sequentially wound on the driving wheel, the driven wheel, the first fixed pulley and the second fixed pulley; when the first guide rail 502 moves toward the second guide rail 503, the distance between the driven wheel and the driving wheel decreases, and the distance between the first fixed pulley and the second fixed pulley increases; when the first rail 502 moves away from the second rail 503, the distance between the driven pulley and the driving pulley increases, and the distance between the first fixed pulley and the second fixed pulley decreases. The telescopic connection is realized by movably inserting the inner rail and the outer rail which are sleeved outside the inner rail in the CN216569491U, and the transmission belt 3 is ensured to be in a tensioning state in a surrounding mode, so that the transmission belt 3 can be kept in a tensioning state along with the telescopic connection of the inner rail and the outer rail, and when the area of an overlapping area of the inner rail and the outer rail is changed, the lengths of the transmission belt 3 and the inner rail and the outer rail are also changed along with the area of the overlapping area of the inner rail and the outer rail, so that the transmission belt 3 is ensured to be in the tensioning state. For example, when the mounting seat 4 is pulled out to form the exposed area 401, the distance between the first fixed pulley and the second fixed pulley is reduced, and the length of the driving belt 3 corresponding to the first fixed pulley and the second fixed pulley is reduced; when the mounting seat 4 is mounted on the guide rail again, the distance between the first fixed pulley and the second fixed pulley becomes large and the length of the driving belt 3 corresponding to the first fixed pulley and the second fixed pulley becomes large, so that the driving belt 3 and the guide rail are reset and the driving belt 3 is kept tight. Thus, CN216569491U can be very conveniently and quickly switched between the single-open mode and the double-open mode in cooperation with the locking mechanism 204 of the present utility model.

Referring to fig. 8-11, the curtain hanging wheel comprises a hanging wheel main body 100, a hanging ring assembly 101 and a serpentine curtain mounting position 102, wherein the hanging ring assembly 101 is connected with the hanging wheel main body 100, and the serpentine curtain mounting position 102 is arranged on the hanging wheel main body 100; the hanging wheel main body 100 is provided with a guide rail connecting portion 104, the guide rail connecting portion 104 is used for being in sliding connection with a first guide rail 502 and a second guide rail 503, the hanging ring assembly 101 comprises a hanging ring 101b, the hanging ring 101b is used for installing a curtain, the hanging ring 101b is located below the guide rail connecting portion 104, and the hanging ring 104 is located below the serpentine curtain installation position 102.

The serpentine curtain mounting location 102 can be a through hole extending through the pulley body 100, a hook or loop that mates with the serpentine curtain cord 103c, etc., although the following slot method can be used. The serpentine curtain mounting location 102 is located below the rail connection 104, and if the curtain rail 1 is mounted on the first rail 502 and the second rail 503, the serpentine curtain mounting location 102 can be well exposed for easy removal of the serpentine curtain limiter mechanism 103. The utility model is provided with a serpentine curtain mounting location 102, which enables the hanging wheel to be applicable to both serpentine curtains and non-serpentine curtains. Rails for both serpentine and non-serpentine curtains can be used. The user does not need to worry about buying the wrong hanging wheel, and great convenience is provided for after-sales.

Referring to fig. 8-11, the curtain suspension wheel 1 is slidably connected to the first rail 502 and the second rail 503 through the rail connection portion 104, and connects the curtain fabric through the suspension ring assembly 101, the curtain suspension wheels 1 are mounted on the curtain driving belt at intervals through the driving belt mounting portion, and the curtain pulley is also provided with the serpentine curtain mounting position 102. The serpentine curtain mounting location 102 of the curtain runner is identical in construction to the serpentine curtain mounting location 102 of the curtain runner 1. Further, the serpentine curtain mounting position 102 is a socket groove 102a formed in the hanging wheel main body 100, the serpentine curtain limiting mechanism 103 further comprises a plurality of socket connectors 103a capable of being matched with the socket groove 102a, and a serpentine curtain rope 103c sequentially connected with the socket connectors 103a, and the socket connectors 103a are sequentially and detachably plugged in the socket groove 102 a. The serpentine curtain stop mechanism 102 is located outside the first rail 502 and the second rail 503; the serpentine curtain installation position 102 of the curtain pulley 2 and the serpentine curtain installation position 102 of the curtain hanging wheel 1 are both positioned outside the first guide rail 502 and the second guide rail 503, and the serpentine curtain limiting mechanism 102 can be detachably installed on the serpentine curtain installation position 102 outside the first guide rail 502 and the second guide rail 503, so that the common opening and closing curtain and the serpentine curtain can be switched without disassembling and assembling the guide rails.

Referring to fig. 1-6, in a preferred embodiment, the curtain suspension wheel 1 further includes a serpentine curtain stop mechanism 103, the serpentine curtain stop mechanism 103 being removably mounted to the serpentine curtain mount 102. The two can be formed separately, which is convenient for generation. The serpentine curtain limiting mechanism comprises a serpentine curtain cord and an insert 103a, wherein the insert 103a and the serpentine curtain cord can be integrally formed first, and of course, in some embodiments, the insert 103a and the serpentine curtain cord can be formed separately and then fixedly connected with the serpentine curtain cord 103c after the insert 103a is installed. The serpentine curtain cord 103c can be one of a cord, wire, tape, or plastic strip. Further, the bail assembly 101 is detachably mounted to the bail body 100. So that the hanging wheel main body 100 is better molded, and the hanging wheel main body 100 is better made into a universal piece.

Referring to fig. 8-11, in a preferred embodiment, the serpentine curtain mounting location 102 is a socket 102a provided on the hanging wheel main body 100 and the curtain pulley, the socket 102a has a socket 102b, the serpentine curtain limiting mechanism 103 further includes a socket 103a, and the socket 103a can be plugged into the socket 102a through the socket 102 b. By means of the matching mode of the plug grooves 102a and the plug connectors 103a, the installation is convenient and quick.

Referring to fig. 9-11, in a preferred embodiment, the plug port 102b is downward disposed and penetrates through the bottom surface of the hanging wheel main body 100, the plug slot 102a is further provided with a first avoiding port 102c communicated with the plug port 102b, the first avoiding port 102c is communicated with the plug port 102b and extends upward from the plug port 102b, and the first avoiding port 102c penetrates through the rear side wall of the hanging wheel main body 100; the serpentine curtain limiting mechanism 103 further comprises a serpentine curtain rope 103c, the serpentine curtain rope 103c is connected with one end of the plug-in component 103a, the other end of the plug-in component 103a forms a plug-in part 103b, when the plug-in part 103b is plugged in the plug-in groove 102a, one end, connected with the serpentine curtain rope 103c, of the plug-in component 103a moves upwards and is exposed outwards compared with the first avoidance port 102c, and the first avoidance port 102c limits the outward movement of the plug-in part 103 b. Through the arrangement, the installation of the snakelike curtain limiting mechanism 103 can be facilitated, and meanwhile the volume of the curtain hanging wheel 1 can be effectively reduced.

In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description of the terms "preferred embodiment," "further embodiment," "other embodiments," or "specific examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.

Claims (10)

1. The curtain telescopic guide rail is characterized by comprising a first guide rail, a second guide rail, a driving belt, two curtain pulleys, a plurality of curtain hanging wheels and a serpentine curtain limiting mechanism, wherein the first guide rail and the second guide rail are in telescopic connection, the driving belt is movably arranged in the first guide rail and the second guide rail in a penetrating manner, the curtain pulleys are connected with the driving belt, the curtain hanging wheels can be slidably connected to the first guide rail and/or the second guide rail, the curtain hanging wheels are sequentially arranged on the first guide rail and/or the second guide rail along the axial direction, and the serpentine curtain limiting mechanism is detachably arranged on the curtain hanging wheels and is used for limiting the moving distance of two adjacent curtain hanging wheels in the axial direction; at least one of the two curtain slides is connected with a locking mechanism which has a locking state and an unlocking state, and the locking mechanism can be fixedly connected with the driving belt when in the locking state; the locking mechanism is movably connected with the driving belt when in a release state.

2. The window covering telescoping rail of claim 1, wherein the locking mechanism comprises a locking member connected to the belt and a driving member having one end connected to the locking member, the other end of the driving member being exposed compared to the first rail and the second rail, and the locking member being moved in the axial direction by the exposed portion of the driving member, the locking mechanism being in a locked state when the locking member is moved in one of the directions; the locking mechanism is in an unlocked state when the locking member is moved in the other direction.

3. The curtain rail of claim 2, wherein the curtain rail comprises a rail body and a sliding through hole penetrating through the rail body, the locking members penetrate through the sliding through holes, the locking mechanism further comprises two sliding connecting members, the upper ends of the two sliding connecting members are respectively connected with the locking members, the lower ends of the two sliding connecting members are connected with the driving members, the driving members are hinged with the rail body, the lower ends of the driving members can swing left and right along the axial direction around the hinged positions, the two locking members are driven to be close to or far away from each other along the axial direction, the locking mechanism is in a locking state or a releasing state, sliding openings extending along the axial direction are formed in the bottoms of the first rail and the second rail, and the lower ends of the driving members extend out of the sliding openings and are exposed.

4. The curtain rail according to claim 3, wherein the sliding through hole limits the movement of the locking member in the up-down and left-right directions, and a limiting slide rail slidably connected to the sliding connector is further provided on the pulley body, and limits the movement of the sliding connector in the up-down and left-right directions; the sliding connecting piece is provided with pushing grooves extending along the up-down direction respectively, the driving piece is provided with two pushing columns which face towards and are matched with the pushing grooves respectively, when the driving piece swings left and right, the two pushing columns push the two sliding connecting pieces to be close to or far away from each other along the left-right direction respectively, and the two pushing columns move up and down respectively.

5. The curtain rail of claim 2, wherein the curtain rail further comprises a rail body and a pressing plate provided on the rail body, the locking member is slidably connected to the rail body, the locking member is formed with a pressing block spaced from the pressing plate in a front-rear direction, a side of the pressing plate adjacent to the pressing block is provided with anti-slip saw teeth for engagement with the driving belt, and the locking member moves the curtain driving member to the anti-slip saw teeth in the front-rear direction when in the locked state.

6. The curtain rail according to claim 2, wherein the locking member is an elastic member and is detachably connected to the belt, the locking member is further provided with a positioning channel through which the belt passes, the positioning channel axially penetrates through the rear end of the locking member, the front end of the locking member is further provided with a mounting opening for mounting the belt, the mounting opening is in communication with the positioning channel on the locking member, the mounting opening has an open state and a closed state, and the belt can be placed in the positioning channel or removed from the positioning channel when in the open state; when in a tightening state, the mounting opening limits the transmission belt.

7. The window covering telescoping rail of claim 1, further comprising a mounting base detachably connected to the first rail and/or the second rail, wherein the mounting base forms an exposed area when separated from the first rail and/or the second rail along a connection and moved axially relative to each other, wherein the locking mechanism is detachably connected to the belt, and wherein the locking mechanism moves the window covering sled to the exposed area when in an unlocked state; when the double-opening mode is switched to the single-opening mode, the curtain pulley can be detached from the transmission belt in the exposed area; when the single-open mode is switched to the double-open mode, the curtain pulley can be mounted on the driving belt in the exposed area.

8. The window covering telescoping rail of claim 7, wherein the mount is removably coupled to the first rail and/or the second rail, the mount further coupled to the belt; the mounting seat can form the exposed area when being pulled out from the first guide rail and/or the second guide rail, and the first guide rail and the second guide rail are shortened or the transmission belt in the first guide rail and the second guide rail is prolonged and exposed; when the mounting seat is spliced with the first guide rail and/or the second guide rail, the first guide rail and the second guide rail are extended or the driving belt in the first guide rail and the second guide rail is shortened, and the first guide rail and the second guide rail or the driving belt are reset.

9. The curtain rail of claim 8, wherein the first rail is telescopically inserted into the second rail, the sliding openings of the first rail and the second rail are respectively provided with a sliding opening at the bottom and are communicated, the lower ends of the curtain pulley and the curtain hanging wheel extend downwards along the sliding openings, and the curtain pulley and the curtain hanging wheel can move to the exposed area along the sliding openings; the lower end of the locking mechanism extends out of the sliding opening and is exposed, and the lower end of the locking mechanism is triggered to enable the locking mechanism to be in a locking state or an unlocking state.

10. The curtain telescopic guide rail of claim 1, wherein the curtain hanging wheel and the curtain pulley are provided with inserting grooves, the serpentine curtain limiting mechanism further comprises a plurality of inserting pieces and serpentine curtain ropes, the inserting pieces are sequentially arranged along the axial direction, one ends of the inserting pieces are fixedly connected with the serpentine curtain ropes, and the other ends of the inserting pieces are inserted into the inserting grooves in a pluggable manner.