CN216166799U - Curtain telescopic guide rail - Google Patents

Abstract

The utility model relates to a curtain telescopic guide rail, which comprises an outer guide rail, an inner guide rail and a curtain guide rail fixing device, wherein the inner guide rail is nested in the outer guide rail, the inner guide rail and the outer guide rail can relatively telescopically slide, the curtain guide rail fixing device comprises a guide sleeve and a fixing component, the guide sleeve is sleeved outside the joint of the outer guide rail and the inner guide rail, the connecting end of the outer guide rail is inserted into the guide sleeve from the second end of the guide sleeve and is matched with the guide sleeve, the free end of the outer guide rail extends out of the guide sleeve, the first end of the inner guide rail is inserted into the guide sleeve and is matched with the guide sleeve, the connecting end of the inner guide rail is inserted into the outer guide rail, the free end of the inner guide rail extends out of the guide sleeve, and the fixing component is connected with the inner guide rail and/or the outer guide rail to fix the inner guide rail and/or the outer guide rail relative to the guide sleeve. The telescopic rod guide rail length adjusting device can conveniently adjust the length of the telescopic rod guide rail, can limit inward contraction and telemotion of the two telescopic rod guide rails through the matching of the fixing device and the first slide rail, and can realize stable transition of the inner rail and the outer rail.

Description

Curtain telescopic guide rail

Technical Field

The utility model belongs to a curtain, and particularly relates to a curtain telescopic guide rail.

Background

Most curtain guide rails in the market at present need to be manufactured by measuring the size firstly and then manufactured according to the size or needs to be modified by professional personnel during specific application, the customized production period is long, inconvenience is caused to the installation of the curtain rod, and waste in the cutting of the curtain rod is easily caused; once the length of the curtain guide rail is determined, the curtain guide rail can only be used on a corresponding window, and once the size of the window is changed due to decoration and the like, the curtain guide rail with the original size cannot be used continuously or adjusted, so that waste is generated. The problem can be well solved by adopting the curtain telescopic rod guide rail. However, the problem of how to fix the telescopic rod guide rail needs to be solved by adopting the telescopic rod guide rail; when the fixing function is realized, the length of the telescopic rod guide rail is inconvenient to adjust; when the telescopic rod guide rail is matched with other transmission parts for use, the inner rail, the outer rail and a fixing device between the inner rail and the outer rail are difficult to realize the problems of smooth transition and the like.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a curtain telescopic guide rail.

A curtain telescopic guide rail comprises an outer guide rail, an inner guide rail and a curtain guide rail fixing device, wherein the inner guide rail is nested and installed in the outer guide rail, the inner guide rail and the outer guide rail can relatively slide in a telescopic way, the curtain guide rail fixing device comprises a guide sleeve and a fixing component, the guide sleeve is sleeved outside the joint of the outer guide rail and the inner guide rail, the connecting end of the outer guide rail is inserted into the guide sleeve from the second end of the guide sleeve, the free end of the outer guide rail extends out of the guide sleeve, the inner guide rail is inserted into the guide sleeve from the first end of the guide sleeve, the connecting end of the inner guide rail is inserted into the outer guide rail, the free end of the inner guide rail extends out of the guide sleeve, the fixing assembly is connected with the inner guide rail and/or the outer guide rail and fixes the inner guide rail and/or the outer guide rail relative to the guide sleeve.

Preferably, the curtain telescopic guide rail also comprises a first rotating wheel, a second rotating wheel, a conveyor belt and a curtain guide rail pulley, the first rotating wheel and the second rotating wheel are respectively and rotatably arranged at the free ends of the outer guide rail and the inner guide rail, the conveyor belt is connected between the first rotating wheel and the second rotating wheel to ensure that the first rotating wheel is in transmission connection with the second rotating wheel, the conveyor belt is positioned in the outer guide rail and the inner guide rail, the curtain guide rail pulley is connected with the conveyor belt, and extends out of the outer guide rail and the inner guide rail, the curtain guide rail pulley can move along the axial direction of the outer guide rail and the inner guide rail under the driving of the conveyor belt, the curtain guide rail trolley passes through the guide sleeve when moving from the outer guide rail to the exposed section of the inner guide rail or moving from the exposed section of the inner guide rail to the outer guide rail.

Preferably, the curtain telescopic guide rail comprises one or more curtain guide rail pulleys, each curtain guide rail pulley comprises a pulley main body and a plurality of pulleys, each pulley main body comprises a pulley upper main body and a pulley lower main body connected with the pulley upper main body, a plurality of inner pulleys are rotatably mounted on the pulley upper main body, the pulley upper main body can slide in the outer guide rail and/or the inner guide rail, and the pulley lower main body is positioned outside the outer guide rail and the inner guide rail; a first threading through hole is formed in the pulley upper main body of one of the curtain guide rail pulleys, and a second threading through hole is formed in the pulley lower main body; the conveyor belt sequentially penetrates through the first threading through hole and the second threading through hole of the curtain guide rail pulley and is fixed on the curtain guide rail pulley.

Preferably, the device further comprises a threading fixing device, wherein the threading fixing device is arranged on the lower main body and located on one side of the second threading through hole or arranged in the second threading through hole and used for fixing the conveyor belt in the second threading through hole.

Preferably, the guide sleeve is a hollow tube with two open ends, the bottom of the inner guide rail is provided with a first sliding opening, the bottom of the outer guide rail is provided with a second sliding opening, the bottom surface of the guide sleeve is provided with a through groove penetrating through the bottom surface of the guide sleeve, the curtain guide rail pulley comprises a pulley main body and a plurality of pulleys, the pulley main body comprises a pulley upper main body and a pulley lower main body connected with the pulley upper main body, the pulley upper main body is rotatably provided with a plurality of inner pulleys, the pulley upper main body can slide in the outer guide rail and/or the inner guide rail, the pulley lower main body penetrates through the first sliding opening or the second sliding opening and extends out of the inner guide rail outer guide rail and the outer guide rail, the through groove is matched with the first sliding opening and the second sliding opening, and when the curtain guide rail pulley penetrates through the guide sleeve, the lower pulley body penetrates through the through groove.

Preferably, the first sliding opening and the second sliding opening have different widths, the through groove has a first through section with gradually changing width, and the widths of the two ends of the first through section are respectively adapted to the widths of the corresponding first sliding opening and the second sliding opening.

Preferably, the guide sleeve is in a hollow tubular shape with two open ends, a first supporting surface and a second supporting surface are formed on the bottom surface of the guide sleeve, the first bearing surface extends from the first end of the guide sleeve inwards along the axial direction of the guide sleeve, the second bearing surface extends from the second end of the guide sleeve axially inward of the guide sleeve, the first supporting surface is connected with the second supporting surface, the first supporting surface is higher than the second supporting surface, a step is formed at the joint of the first supporting surface and the second supporting surface, a through groove penetrating through the first supporting surface and the second supporting surface is formed on the bottom surface of the guide sleeve, the first supporting surface supports the bottom surface of the inner guide rail, the second supporting surface supports the bottom surface of the inner guide rail, the height difference of the bottom surfaces of the outer guide rail and the inner guide rail is matched with the height difference of the second supporting surface and the first supporting surface.

Preferably, the curtain telescopic guide rail further comprises a curtain guide rail pulley, the curtain guide rail pulley is rotatably provided with a plurality of outer pulleys, the guide sleeve further comprises a transition surface, a first supporting surface and a second supporting surface are formed on the bottom surface of the guide sleeve, the transition surface is positioned on the back surface of the first supporting surface and positioned on two sides of the through groove, one end of the transition surface, which is close to the joint of the first supporting surface and the second supporting surface, is matched with the outer guide rail, and the other end of the transition surface is matched with the inner guide rail; the height difference between one end and the other end of the transition surface, which are matched with the outer guide rail, is matched with the height difference between the inner guide rail and the outer guide rail, and when the curtain guide rail pulley moves between the free end of the outer guide rail and the free end of the inner guide rail, the outer pulley rolls through the other end from one end of the transition surface.

Preferably, the curtain telescopic guide rail further comprises a curtain guide rail pulley, a plurality of inner pulleys are rotatably mounted on the curtain guide rail pulley, the guide sleeve further comprises a transition table, a first supporting surface and a second supporting surface are formed on the bottom surface of the guide sleeve, the transition table protrudes upwards relative to the first supporting surface and extends outwards from the joint of the first supporting surface and the second supporting surface along the axial direction of the guide sleeve; the inner surface of the bottom of the outer guide rail is provided with a raised second sliding support surface, and the height of the second sliding support surface, compared with the inner bottom surface of the bottom of the outer guide rail, is higher than that of the transition table, compared with the first support surface; when the outer guide rail is matched with the guide sleeve, the transition table is in butt joint matching with the second sliding support surface in the axial direction of the guide sleeve; the inner sheave may slide up from the transition table onto the second sliding support surface or down from the second sliding support surface onto the transition table.

Preferably, a first guide rail and a second guide rail are formed at the upper part of the guide sleeve, a first supporting surface and a second supporting surface are formed at the bottom surface of the guide sleeve, the first guide rail and the second guide rail are respectively positioned above the first supporting surface and the second supporting surface and extend along the axial direction of the guide sleeve, the first guide rail and the second guide rail are connected, and a step is also arranged at the joint of the first guide rail and the second guide rail; the first guide rail is matched with the top end of the inner guide rail, so that two sides of the inner guide rail are fixed relative to the guide sleeve, and the second guide rail is matched with the top end of the outer guide rail, so that two sides of the outer guide rail are fixed relative to the guide sleeve.

Preferably, the fixing component penetrates through the shell of the guide sleeve and partially extends into the guide sleeve, and the fixing component is connected with the inner guide rail and/or the outer guide rail to fix the inner guide rail and/or the outer guide rail relative to the guide sleeve.

Preferably, the fixing assembly is a fixing bolt, the guide sleeve is further provided with a fixing bolt hole matched with the fixing bolt, the fixing bolt hole penetrates through the guide sleeve, and the fixing bolt can extend into the guide sleeve through the fixing bolt hole to fix the inner guide rail; or

The fixing assembly comprises a fixing bolt and a fixing plate, the fixing plate is arranged in the guide sleeve, the guide sleeve and the fixing plate are both provided with fixing bolt holes matched with the fixing bolt, and the fixing plate moves inwards to press and fix the inner guide rail or moves outwards to clamp and fix the inner guide rail between the fixing plate and the guide sleeve under the rotating matching of the fixing bolt and the fixing bolt holes.

The curtain telescopic guide rail provided by the utility model can conveniently adjust the length of the telescopic rod guide rail, can limit inward contraction and telemotion of the two telescopic rod guide rails by matching the fixing device and the first slide rail, and can realize stable transition of the inner rail and the outer rail.

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 intended to be drawn to scale in actual dimensions, emphasis instead being placed upon illustrating the principles of the utility model.

FIG. 1 is a front view of an angled curtain rail mounting assembly according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a bottom view of a curtain guide fixing device according to an embodiment of the present invention;

FIG. 3 is a schematic view of a bottom view of an angled curtain rail fastening device according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a fixing assembly according to an embodiment of the present invention;

FIG. 5 is a schematic view of a curtain rail;

FIG. 6 is a sectional view taken along line A-A;

FIG. 7 is a schematic view of the structure of the inner and outer guide rails in cooperation with the curtain rail fixing device;

FIG. 8 is a schematic view of the structure of the outer rail cooperating with the curtain rail fixing device;

FIG. 9 is a schematic view of the inside structure of the curtain telescopic rail;

FIG. 10 is a schematic view of the curtain rail trolley and the mounting assembly;

fig. 11 is a schematic top view of a curtain rail block.

In the figure: the curtain guide rail fixing device comprises a curtain guide rail fixing device 1, an inner guide rail 2, an outer guide rail 3, a curtain guide rail pulley 4, a conveyor belt 5, a first rotating device 6 and a second rotating device 7;

the guide sleeve comprises a guide sleeve 101, a first supporting surface 102, a second supporting surface 103, a first guide rail 104, a second guide rail 105, a first matching surface 106, a second matching surface 107, a through groove 108, a first through section 109, a second through section 110, a transition surface 111, a transition table 112, a fixing assembly 113, a fixing bolt 114, a fixing bolt hole 115, a T-shaped nut 116 and a limiting part 117;

a first sliding opening 201, a second sliding opening 301, a second sliding support surface 302;

the pulley body 401, the inner pulley 403, the outer pulley 406, the first threading through hole 407, the second threading through hole 408, the threading fixing device 411, the threading bolt 4111, the threading nut 4112, the first end opening 4071, the second end opening 4072, the second through hole upper opening 4081, and the second through hole lower opening 4082.

Detailed Description

To facilitate an understanding of the utility model, the utility model will now be described more fully 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 the other element and be integral therewith, 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 to which this invention belongs. 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. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-11, a curtain telescopic guide rail comprises an outer guide rail 3, an inner guide rail 2 and the curtain guide rail fixing device 1, the outer guide rail 3 is nested outside the inner guide rail 2, the inner guide rail 2 and the outer guide rail 3 can relatively slide in a telescopic way, the guide sleeve 101 is sleeved outside the joint of the outer guide rail 3 and the inner guide rail 2, the connecting end of the outer guide rail 3 is inserted into the guide sleeve 101 from the second end of the guide sleeve 101, is matched with the guide sleeve 101 and is abutted against the step, the free end of the outer guide rail 3 extends out of the guide sleeve 101, the second supporting surface 103 supports the outer guide rail 3, the inner guide rail 2 is inserted into the guide sleeve 101 from the first end of the guide sleeve 101, the inner guide rail 2 is matched with the guide sleeve 101, the connecting end of the inner guide rail 2 is inserted into the outer guide rail 3, the free end of the inner guide rail 2 extends out of the guide sleeve 101, the first supporting surface 102 supports the inner guide rail 2, and the height difference between the bottom surfaces of the outer guide rail 3 and the inner guide rail 2 is matched with the height difference between the second supporting surface 103 and the first supporting surface 102. The abutment here is understood to mean that the outer guide rail 3 is connected to a step which resists the movement of the outer guide rail 3 towards the first end of the guide sleeve 101. The fixing assembly 113 is connected to the inner rail 2 and/or the outer rail 3 to fix the inner rail 2 and/or the outer rail 3 with respect to the guide housing 101.

Referring to fig. 1-11, when in use, the second supporting surface 103 can be matched with the outer guide rail 3, the step at the joint of the first supporting surface 102 and the second supporting surface 103 is limited to the outer guide rail 3, the first supporting surface 102 can be matched with the inner guide rail 2, the inner guide rail 2 can slide along the first supporting surface 102 from the first end of the guide sleeve 101 and extend into the outer guide rail 3 of the telescopic rod, the position where the inner guide rail 2 extends into the outer guide rail 3 is adjusted to achieve the required curtain guide rail length, then the curtain guide rail can be fixed by the fixing component 113, and the fixing component 113 can be matched with the guide sleeve 101 to limit the inner guide rail 2 and the outer guide rail 3 to relatively retract inwards. The curtain guide fixing device 1 can also be matched with curtain guide conveying mechanisms such as a conveying belt 5 or a conveying rope, and the like for use, and because the length of the curtain guide conveying mechanism is fixed when the curtain guide conveying mechanism is in a use state, the curtain guide can be limited to extend outwards, the curtain guide fixing device 1 and the curtain guide conveying mechanism can fix the telescopic rod guide to prevent the telescopic rod guide from extending outwards and contracting inwards.

Referring to fig. 5 and 9, in a preferred embodiment, the curtain telescopic rail further includes a first rotating wheel 6, a second rotating wheel 7, a conveyor belt 5 and a curtain rail pulley 4, the first rotating wheel 6 and the second rotating wheel 7 are respectively rotatably installed at free ends of the outer rail 3 and the inner rail 2, the conveyor belt 5 is connected between the first rotating wheel 6 and the second rotating wheel 7, such that the first rotating wheel 6 and the second rotating wheel 7 are in transmission connection, the conveyor belt 5 is located inside the outer rail 3 and the inner rail 2, the curtain rail pulley 4 is connected with the conveyor belt 5, and extends out of the outer guide rail 3 and the inner guide rail 2, the curtain guide rail pulley 4 can move along the axial direction of the outer guide rail 3 and the inner guide rail 2 under the drive of the conveyor belt 5, and the curtain guide rail pulley 4 passes through the guide sleeve 101 when moving from the outer guide rail 3 to the exposed section of the inner guide rail 2 or from the exposed section of the inner guide rail 2 to the outer guide rail 3. Further, the upper pulley body of the curtain guide pulley 4 is located inside the outer guide rail 3 and the inner guide rail 2, the lower pulley body of the curtain guide pulley 4 is located outside the outer guide rail 3 and the inner guide rail 2, and the upper pulley body and the lower pulley body move along both ends of the inner guide rail 2 and the outer guide rail 3. The length of the conveyor belt 5 is fixed when the conveyor belt is in a use state, the conveyor belt can limit the curtain guide rail to extend outwards, and the conveyor belt can be matched with the curtain guide rail fixing device 1 to fix the telescopic rod guide rail and prevent the telescopic rod guide rail from extending outwards and contracting inwards. The free ends of the outer rail 3 and the inner rail 2 refer to the ends of the outer rail 3 and the inner rail 2 opposite to the ends that are matched with the guide sleeve 101.

Referring to fig. 9 to 11, in a preferred embodiment, the curtain telescopic rail includes one or more curtain rail pulleys 4, each curtain rail pulley 4 includes a pulley main body 401 and a plurality of pulleys, each pulley main body 401 includes a pulley upper main body and a pulley lower main body connected to the pulley upper main body, a plurality of inner pulleys 403 are rotatably mounted on the pulley upper main body, the pulley upper main body can slide in the outer rail 3 and/or the inner rail 2, and the pulley lower main body is located outside the outer rail 3 and the inner rail 2; a first threading through hole 407 is formed in the pulley upper main body of one (or a plurality of) curtain guide rail pulleys 4, and a second threading through hole 408 is formed in the pulley lower main body; the conveyor belt 5 passes through the first threading through hole 407 and the second threading through hole 408 of the curtain guide rail pulley 4 in sequence and is fixed on the curtain guide rail pulley 4. Further, the upper pulley body of the curtain rail pulley 4 is located inside the outer rail 3 and the inner rail 2, and the lower pulley body of the curtain rail pulley 4 is located outside the outer rail 3 and the inner rail 2. The connection part of the conveyor belt 5 and the threading through hole of the curtain guide rail pulley 4 is generally a steel wire rope, and the conveyor belt 5 partially extends out of the inner guide rail 2 and the outer guide rail 3 along with the pulley lower main body through the arrangement of the first threading through hole 407 and the second threading through hole 408, so that the length of the conveyor belt 5 is convenient to adjust, and the distance between the inner guide rail 2 and the outer guide rail 3 can be further adjusted. Further, first threading thru-hole 407 includes a first end opening 4071 and a second end opening 4072 in communication with first end opening 4071, first end opening 4071 is on one side of upper sled body 401, second end opening 4072 is on the other side of upper sled body 401, first end opening 4071 is oriented in the lateral direction of sled body 401, and second end opening 4072 is oriented in the lateral direction of sled body 401; the pulley body 401 is further provided with a wire guiding platform 410, the wire guiding platform 410 is communicated with the middle of the first threading through hole 407, and the first rope segment and the second rope segment can be threaded through the first end opening 4071 to the wire guiding platform 410 and then threaded through the second end opening 4072. Because the first threading aperture 407 is generally a curved threading aperture, it is difficult to successfully thread between the first end opening 4071 and the second end opening 4072, the placement of the wire guide platform 410 provides more space for threading and enables the first and second lengths of cable to be quickly and easily threaded through the first end opening 4071 and then quickly and easily threaded through the wire guide platform 410 and transversely to the second end opening 4072

Referring to fig. 10 and 11, in the preferred embodiment, the curtain rail block 4 further includes a threading fixing means 411, the threading fixing means 411 is provided on the lower body at one side of the second threading through hole 408 or the threading fixing means 411 is provided in the second threading through hole 408 for fixing the belt 5 in the second threading through hole 408. Furthermore, the fixing device comprises an upper hole, a ring, a bolt structure, an elastic structure, a clamping structure and the like of the lower body of the pulley, and the steel wire rope can be fixed on the lower body of the pulley through the fixing device; further, it is also possible to fix the belt 5 by winding, knotting, etc. the wire rope portion of the belt around the second threading through hole 408 without providing a fixing means. When the threading fixture 411 is disposed in the second threading through hole 408: the second threading through hole 408 is formed in the lower pulley body in the vertical direction of the hole of the threading bolt 4111, the second threading through hole 408 comprises a second through hole upper opening 4081 and a second through hole lower opening 4082, and the second through hole lower opening 4082 is formed in the bottom of the lower pulley body; threading fixing device 411 includes threading bolt 4111 and threading nut 4112, threading bolt 4111 can cooperate with second threading through hole 408, and threading nut 4112 can cooperate with second through hole upper opening 4081. The wire rope can be better fixed in the second threading through hole 408 by the cooperation of the threading bolt 4111 and the threading nut 4112, and the operation of adjusting the wire rope can be conveniently carried out by screwing and unscrewing the threading bolt 4111 and the threading nut 4112.

Referring to fig. 7 to 9, in a preferred embodiment, the guide sleeve 101 is a hollow tube with two open ends, the bottom of the inner guide rail 2 is provided with a first sliding opening 201, the bottom of the outer guide rail 3 is provided with a second sliding opening 301, the bottom of the guide sleeve 101 is provided with a through groove 108 penetrating through the bottom of the guide sleeve 101, the curtain guide rail pulley 4 comprises a pulley main body 401 and a plurality of pulleys, the pulley main body 401 comprises a pulley upper main body and a pulley lower main body connected with the pulley upper main body, the pulley upper main body is rotatably provided with a plurality of inner pulleys 403, the pulley upper main body can slide in the outer guide rail 3 and/or the inner guide rail 2, the pulley lower main body passes through the first sliding opening 201 or the second sliding opening 301 and extends out of the outer guide rail 3 and the outer guide rail 2, the through groove 108 is matched with the first sliding opening 201 and the second sliding opening 301, when the curtain guide rail pulley 4 passes through the guide sleeve 101, the lower pulley body passes through the through groove 108. Further, the first sliding opening 201 is wider than the second sliding opening 301 and is a rectangular opening, and the first sliding opening 201 and the second sliding opening 301 are respectively arranged at the bottom of the inner rail 2 and at the middle position of the bottom of the inner rail 2. The first sliding opening 201 and the second sliding opening 301 are communicated and are communicated with the through groove 108, one end of the through groove 108 is matched with the first sliding opening 201, and the other end of the through groove 108 is matched with the second sliding opening 301, so that when the curtain guide rail pulley 4 passes through the guide sleeve 101, the lower body of the pulley smoothly passes through the through groove 108.

Referring to fig. 7 to 9, in a preferred embodiment, the widths of the first sliding opening 201 and the second sliding opening 301 are different, the through slot 108 has a first through section 109 with gradually changing width, and the widths of two ends of the first through section 109 are respectively adapted to the widths of the corresponding first sliding opening 201 and the second sliding opening 301. Further, an end of the first through section 109 corresponding to the first sliding opening 201 is wider than an end corresponding to the second sliding opening 301.

Referring to fig. 1 to 4, a curtain guide fixing device 1 includes a guide sleeve 101, the guide sleeve 101 is a hollow tube with two open ends, a first supporting surface 102 and a second supporting surface 103 are formed on a bottom surface of the guide sleeve 101, the first supporting surface 102 extends inward from a first end of the guide sleeve 101 along an axial direction of the guide sleeve 101, the second supporting surface 103 extends inward from a second end of the guide sleeve 101 along the axial direction of the guide sleeve 101, the first supporting surface 102 is connected with the second supporting surface 103, the first supporting surface 102 is higher than the second supporting surface 103, a step is formed at a connection position of the first supporting surface 102 and the second supporting surface 103, and a through groove 108 penetrating through the first supporting surface 102 and the second supporting surface 103 is formed on the bottom surface of the guide sleeve 101. The first bearing surface 102 is higher than the second bearing surface 103 with reference to the bottom surface of the guide sleeve 101.

Referring to fig. 3 and 6, in a preferred embodiment, the guide sleeve 101 further includes a first mating surface 106 and a second mating surface 107, the first mating surface 106 extends inward from two side surfaces and a top surface of the first end of the guide sleeve 101 along the axial direction of the guide sleeve 101, and surrounds the first supporting surface 102 to form an annular surface with an opening on the bottom surface; the second mating surface 107 extends inward from both side surfaces and a top surface of the second end of the guide sleeve 101 in the axial direction of the guide sleeve 101, and surrounds the second supporting surface 103 to form an annular surface having an opening at a bottom surface, the first mating surface 106 is closer to the central axis of the guide sleeve 101 than the second mating surface 107, the first mating surface 106 is connected to the second mating surface 107 in the axial direction of the guide sleeve 101, and a step is formed at a connection between the first mating surface 106 and the second mating surface 107. Further, the first mating face 106 and the first support face 102 enclose an annular face in the second mating face 107 and the second support face 103 enclose an annular face. The distance between the two annular surfaces is adapted to the height difference between the inner guide rail 2 and the outer guide rail 3 of the curtain guide rail, so that one end of the inner guide rail 2 can smoothly penetrate through the guide sleeve 101 and be inserted into the outer guide rail 3, and curtain guide rail components such as a curtain guide rail pulley 4 can be smoothly transited between the interior of the inner guide rail 2, the interior of the outer guide rail 3 and the interior of the guide sleeve 101. The first mating surface 106 is closer to the central axis of the guide sleeve 101 than the second mating surface 107, and can be understood as two coaxial semi-annular surfaces spaced inside and outside; both sides and top of the first end and both sides and top of the second end are directed towards the inside of the sleeve 101.

Referring to fig. 7, in a preferred embodiment, the through groove 108 includes a first through section 109 and a second through section 110, the first through section 109 and the second through section 110 are communicated, the positions of the first through section 109 and the second through section 110 respectively correspond to the positions of the first supporting surface 102 and the second supporting surface 103, the width of the second through section 110 is greater than that of the first through section 109, and the width of the first through section 109 near the first end of the guide sleeve 101 is greater than that of the first through section 109 near the second through section 110. Further, the first through section 109 and the second through section 110 are both opened along the axial direction of the guide sleeve 101, and the width of the through groove 108 is a width between both sides of the through groove 108 parallel to the axial direction of the guide sleeve 101. When in use, the width of the first through section 109 close to the first end of the guide sleeve 101 is larger than the width of the first sliding opening 201 of the inner guide rail 2, and the width of the first through section 109 close to the second through section 110 is adapted to the width of the first sliding opening 201 of the inner rail; the width of the second through section 110 is adapted to the width of the first sliding opening 201 of the outer guide rail 3. The communication positions among the through groove 108 of the guide sleeve 101, the first sliding opening 201 of the inner guide rail 2 and the first sliding opening 201 of the outer guide rail 3 are smoother, and curtain guide rail components such as the curtain guide rail pulley 4 and the like pass through the communication positions more smoothly.

Referring to fig. 8, in a preferred embodiment, the curtain telescopic rail further includes a curtain rail pulley 4, the curtain rail pulley 4 is rotatably mounted with a plurality of inner pulleys 403, the guide sleeve 101 further includes a transition table 112, the transition table 112 is disposed at two sides of the through slot 108 and protrudes upward relative to the first supporting surface 102, and the transition table 112 extends axially outward from the connection between the first supporting surface 102 and the second supporting surface 103 along the guide sleeve 101. Further, the transition table 112 is two parallel arrangement along the axial direction of the guide sleeve 101. In use of a curtain rail with a curtain rail carrier 4, the outer rail 3 is provided with a second sliding support surface 302 at both sides of the second sliding opening 301, the curtain rail carrier 4 runs on the second sliding support surface 302 of the outer rail 3, and the second sliding support surface 302 supports the inner pulley 403 of the curtain rail carrier 4. In the scheme, when the outer guide rail 3 is matched with the guide sleeve 101, the transition table 112 is in butt-joint matching with the second sliding support surface 302 in the axial direction of the guide sleeve 101, the height of the transition table 112 (compared with the first support surface 102) is lower than that of the second sliding support surface 302 (compared with the inner bottom surface of the outer guide rail 3), and the height of the transition table is generally half of that of the second sliding support surface 302. The setting can solve the following problems: when the height of the second sliding support surface 302 is higher, the inner pulley 403 of the curtain guide rail pulley 4 is not stable when moving up and down the second sliding support surface 302, for example, when the height of the second sliding support surface 302 is higher than the radius of the inner pulley 403 of the curtain guide rail pulley 4, the curtain guide rail pulley 4 may be obstructed. Therefore, the transition table 112 can make the curtain rail pulley 4 move up and down the second sliding support surface 302 more smoothly and smoothly.

Referring to fig. 2 and 7, in a preferred embodiment, the curtain telescopic rail further includes a curtain rail pulley 4, the curtain rail pulley 4 is rotatably mounted with a plurality of outer pulleys 406, a thickness of a bottom surface of the guide sleeve 101 gradually becomes thinner from a connection position of the first support surface 102 and the second support surface 103 to a first end of the guide sleeve 101, a transition surface 111 is disposed on an outer surface of the bottom surface of the guide sleeve 101, the transition surface 111 is disposed on a back surface of the first support surface 102 and on both sides of the through groove 108, when the bottom surface of the guide sleeve 101 is placed on a horizontal plane, the transition surface 111 is inclined with respect to the horizontal plane, and a height of the transition surface 111 near the connection position of the first support surface 102 and the second support surface 103 is higher than a height of the transition surface 111 near the first end of the guide sleeve 101. The thickness of the bottom surface of the guide sleeve 101 becomes gradually thinner from the junction of the first supporting surface 102 and the second supporting surface 103 to the first end of the guide sleeve 101, or the thickness of the bottom surface of the guide sleeve 101 is the same from the junction of the first supporting surface 102 and the second supporting surface 103 to somewhere in the middle, and then becomes gradually thinner from there to the first end of the guide sleeve 101. When in use, one end of the transition surface 111 close to the joint of the first supporting surface 102 and the second supporting surface 103 is matched with the outer guide rail 3, and the other end is matched with the inner guide rail 2; the height difference between one end and the other end of the transition surface 111, which is matched with the outer guide rail 3, is adapted to the height difference between the inner guide rail 2 and the outer guide rail 3. The other end of the transition surface 111 is matched with the inner guide rail 2, and can be understood as touching with the outer surface of the bottom of the inner guide rail 2 at the other end and can slide relatively or have a slight interval. When the curtain rail block 4 moves between the free end of the outer rail 3 and the free end of the inner rail 2, the outer pulley 406 rolls from one end of the transition surface 111 to the other end, and the outer pulley 406 rolls from one end of the transition surface 111 to the other end means that the outer pulley 406 rotates from one end to the other end while pressing on the transition surface 111. The transition surface 111 is arranged to enable the outer pulley 406 of the curtain guide rail pulley 4 to smoothly transition between the guide sleeve 101 and the inner guide rail 2 and the outer guide rail 3 when the curtain guide rail is used in cooperation with the curtain guide rail pulley 4.

Referring to fig. 2 and 6, in a preferred embodiment, a first guide rail 104 and a second guide rail 105 are formed at an upper portion of the guide sleeve 101, the first guide rail 104 and the second guide rail 105 are respectively located above the first supporting surface 102 and the second supporting surface 103 and extend along an axial direction of the guide sleeve 101, the first guide rail 104 and the second guide rail 105 are connected, and a step is also provided at a connection position of the first guide rail 104 and the second guide rail 105. The first guide rail 104 and the second guide rail 105 are respectively located above the first support surface 102 and the second support surface 103 and extend in the axial direction of the guide housing 101, which means that the first guide rail 104 and the second guide rail 105 are located inside the guide housing 101 and away from the corresponding top end portions of the first support surface 102 and the second support surface 103. When the guide sleeve is used, the shape of the first guide rail 104 is matched with the top end of the inner guide rail 2, the shape of the second guide rail 105 is matched with the top end of the outer guide rail 3, and the step can be abutted to the connecting end of the outer guide rail 3, so that the guide sleeve 101 can limit the two sides of the inner guide rail 2, the two sides of the outer guide rail 3 and the connecting end.

Referring to fig. 1, 2, 4 and 6, in a preferred embodiment, the curtain rail fixing device 1 further includes a fixing member 113, and the fixing member 113 passes through the outer shell of the guide sleeve 101 from the outside of the guide sleeve 101 and partially extends into the guide sleeve 101. Further, the fixing member 113 may be punched through the housing of the guide housing 101 from the top, bottom, and both sides of the guide housing 101, and partially extend into the guide housing 101. Preferably from the top of the guide sleeve 101 through the housing of the guide sleeve 101. Further, the fixing component 113 includes a spiral connection fixing structure, a clamping fixing structure, a snap spring fixing structure, a clamping fixing structure and the like; furthermore, the fixing component 113 is a fixing bolt 114 fixing component 113, the fixing bolt 114 fixing component 113 comprises a stud and a T-shaped nut 116, the upper part of the T-shaped nut 116 is smaller than the lower part thereof, a hollow limiting part 117 with one end opened is arranged in the guide sleeve 101, the opening faces the guide sleeve 101, the upper part of the T-shaped nut 116 can be nested in the limiting part 117, and the stud penetrates through the limiting part and is connected with the T-shaped nut 116 through a fixing bolt hole 115; when the stud is rotationally matched with the fixing bolt hole 115 on the T-shaped nut 116, the limiting part 117 limits the upper part of the T-shaped nut 116, and the T-shaped nut 116 can move towards the outside of the guide sleeve 101. The T-nut 116 can better fix the inner rail 2 and the guide sleeve 101.

Referring to fig. 5 and 9, in a preferred embodiment, the curtain telescopic rail further includes a first rotating wheel 6, a second rotating wheel 7, a conveyor belt 5 and a curtain rail pulley 4, the first rotating wheel 6 and the second rotating wheel 7 are respectively rotatably mounted at free ends of the outer rail 3 and the inner rail 2, the conveyor belt 5 is connected between the first rotating wheel 6 and the second rotating wheel 7, so that the first rotating wheel 6 and the second rotating wheel 7 are in transmission connection, the conveyor belt 5 is located inside the outer rail 3 and the inner rail 2, the curtain rail pulley 4 is connected with the conveyor belt 5 and extends out of the outer rail 3 and the inner rail 2, the curtain rail pulley 4 can move along the axial direction of the outer rail 3 and the inner rail 2 under the driving of the conveyor belt 5, and the curtain rail 4 passes through the guide sleeve 101 when moving from the outer rail 3 to the inner rail 2. Further, the upper pulley body of the curtain rail pulley 4 is located inside the outer rail 3 and the inner rail 2, the lower pulley body of the curtain rail pulley 4 is located outside the outer rail 3 and the inner rail 2, and the upper pulley body and the lower pulley body move along both ends of the inner rail 2 and the outer rail 3. The length of the conveyor belt 5 is fixed when the conveyor belt is in a use state, the conveyor belt can limit the curtain guide rail to extend outwards, and the conveyor belt can be matched with the curtain guide rail fixing device 1 to fix the telescopic rod guide rail and prevent the telescopic rod guide rail from extending outwards and contracting inwards. The free ends of the outer rail 3 and the inner rail 2 refer to the ends of the outer rail 3 and the inner rail 2 opposite to the ends that are matched with the guide sleeve 101.

Referring to fig. 5, 7, 9 and 10, in a preferred embodiment, the curtain rail pulley 4 includes a pulley main body 401 and a plurality of pulleys, the pulley main body 401 includes a pulley upper main body and a pulley lower main body connected to the pulley upper main body, the pulley upper main body is rotatably mounted with the plurality of pulleys, the pulley upper main body is formed with a first threading through hole 407, and the pulley lower main body is formed with a second threading through hole 408; the pulley upper body can slide in the outer guide rail 3 and/or the inner guide rail 2, the pulley lower body is positioned outside the outer guide rail 3 and the inner guide rail 2, and the conveyor belt 5 sequentially passes through the first threading through hole 407 and the second threading through hole 408 and is fixed on the first pulley. Further, the upper pulley body of the curtain rail pulley 4 is located inside the outer rail 3 and the inner rail 2, and the lower pulley body of the curtain rail pulley 4 is located outside the outer rail 3 and the inner rail 2. The connection part of the conveyor belt 5 and the threading through hole of the curtain guide rail pulley 4 is generally a steel wire rope, and the conveyor belt 5 partially extends out of the inner guide rail 2 and the outer guide rail 3 along with the pulley lower main body through the arrangement of the first threading through hole 407 and the second threading through hole 408, so that the length of the conveyor belt 5 is convenient to adjust, and the distance between the inner guide rail 2 and the outer guide rail 3 can be further adjusted.

Referring to fig. 9 to 11, in the preferred embodiment, a threading fixing device 411 is further included, the threading fixing device 411 is disposed on the lower body and located at one side of the second threading through hole 408 or the threading fixing device 411 is disposed in the second threading through hole 408. Furthermore, the fixing device comprises an upper hole, a ring, a bolt structure, an elastic structure, a clamping structure and the like of the lower body of the pulley, and the steel wire rope can be fixed on the lower body of the pulley through the fixing device; further, it is also possible to fix the belt 5 by winding, knotting, etc. the wire rope portion of the belt around the second threading through hole 408 without providing a fixing means. When the threading fixture 411 is disposed in the second threading through hole 408: the second threading through hole 408 is formed in the lower pulley body in the vertical direction of the hole of the threading bolt 4111, the second threading through hole 408 comprises a second through hole upper opening 4081 and a second through hole lower opening 4082, and the second through hole lower opening 4082 is formed in the bottom of the lower pulley body; threading fixing device 411 includes threading bolt 4111 and threading nut 4112, threading bolt 4111 can cooperate with second threading through hole 408, and threading nut 4112 can cooperate with second through hole upper opening 4081. The wire rope can be better fixed in the second threading through hole 408 by the cooperation of the threading bolt 4111 and the threading nut 4112, and the operation of adjusting the wire rope can be conveniently carried out by screwing and unscrewing the threading bolt 4111 and the threading nut 4112.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, reference to the description of the terms "preferred embodiment," "yet another 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, the schematic representations of the terms used above are not necessarily intended to refer 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, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims (12)

1. A curtain telescopic guide rail is characterized by comprising an outer guide rail, an inner guide rail and a curtain guide rail fixing device, wherein the inner guide rail is nested in the outer guide rail, the inner guide rail and the outer guide rail can relatively telescopically slide, the curtain guide rail fixing device comprises a guide sleeve and a fixing component, the guide sleeve is sleeved outside the joint of the outer guide rail and the inner guide rail, the connecting end of the outer guide rail is inserted into the guide sleeve from the second end of the guide sleeve and is matched with the guide sleeve, the free end of the outer guide rail extends out of the guide sleeve, the inner guide rail is inserted into the guide sleeve from the first end of the guide sleeve and is matched with the guide sleeve, the connecting end of the inner guide rail is inserted into the outer guide rail, the free end of the inner guide rail extends out of the guide sleeve, and the fixing component is connected with the inner guide rail and/or the outer guide rail, fixing the inner guide rail and/or the outer guide rail relative to the guide sleeve.

2. The window covering telescopic rail of claim 1, further comprising a first rotating wheel, a second rotating wheel, a conveyor belt, and a window covering rail pulley, the first rotating wheel and the second rotating wheel are respectively and rotatably arranged at the free ends of the outer guide rail and the inner guide rail, the conveyor belt is connected between the first rotating wheel and the second rotating wheel to ensure that the first rotating wheel is in transmission connection with the second rotating wheel, the conveyor belt is positioned in the outer guide rail and the inner guide rail, the curtain guide rail pulley is connected with the conveyor belt, and extends out of the outer guide rail and the inner guide rail, the curtain guide rail pulley can move along the axial direction of the outer guide rail and the inner guide rail under the driving of the conveyor belt, the curtain guide rail trolley passes through the guide sleeve when moving from the outer guide rail to the exposed section of the inner guide rail or moving from the exposed section of the inner guide rail to the outer guide rail.

3. The window curtain telescopic guide of claim 2, wherein the window curtain telescopic guide comprises one or more window curtain guide pulleys, the window curtain guide pulleys comprise a pulley main body and a plurality of pulleys, the pulley main body comprises a pulley upper main body and a pulley lower main body connected with the pulley upper main body, a plurality of inner pulleys are rotatably mounted on the pulley upper main body, the pulley upper main body can slide in the outer guide rail and/or the inner guide rail, and the pulley lower main body is positioned outside the outer guide rail and the inner guide rail; a first threading through hole is formed in the pulley upper main body of one of the curtain guide rail pulleys, and a second threading through hole is formed in the pulley lower main body; the conveyor belt sequentially penetrates through the first threading through hole and the second threading through hole of the curtain guide rail pulley and is fixed on the curtain guide rail pulley.

4. The telescopic window curtain rail of claim 3, further comprising a threading fixture disposed on the lower body and located at one side of the second threading through hole or disposed in the second threading through hole for fixing the belt in the second threading through hole.

5. The telescopic guide rail for curtain as claimed in claim 2, wherein the guide sleeve is a hollow tube with two open ends, the inner guide rail has a first sliding opening at the bottom, the outer guide rail has a second sliding opening at the bottom, the guide sleeve has a through slot penetrating the bottom, the curtain guide rail pulley comprises a pulley body and a plurality of pulleys, the pulley body comprises a pulley upper body and a pulley lower body connected with the pulley upper body, the pulley upper body is rotatably provided with a plurality of inner pulleys, the pulley upper body can slide in the outer guide rail and/or the inner guide rail, the pulley lower body passes through the first sliding opening or the second sliding opening and extends out of the inner guide rail and the outer guide rail, and the through slot is matched with the first sliding opening and the second sliding opening, when the curtain guide rail pulley passes through the guide sleeve, the lower body of the pulley passes through the through groove.

6. The window covering telescopic rail of claim 5, wherein the first sliding opening and the second sliding opening have different widths, the through slot has a first through section with gradually changing width, and the width of the two ends of the first through section is respectively matched with the width of the corresponding first sliding opening and the second sliding opening.

7. The telescopic guide rail for curtain as claimed in claim 1, wherein the guide sleeve is a hollow tube with two open ends, a first supporting surface and a second supporting surface are formed on the bottom surface of the guide sleeve, the first supporting surface extends inwards from the first end of the guide sleeve along the axial direction of the guide sleeve, the second bearing surface extends from the second end of the guide sleeve axially inward of the guide sleeve, the first supporting surface is connected with the second supporting surface, the first supporting surface is higher than the second supporting surface, a step is formed at the joint of the first supporting surface and the second supporting surface, a through groove penetrating through the first supporting surface and the second supporting surface is formed on the bottom surface of the guide sleeve, the first supporting surface supports the bottom surface of the inner guide rail, the second supporting surface supports the bottom surface of the inner guide rail, the height difference of the bottom surfaces of the outer guide rail and the inner guide rail is matched with the height difference of the second supporting surface and the first supporting surface.

8. The telescopic curtain rail as claimed in claim 5, further comprising a curtain rail pulley, the curtain rail pulley rotatably mounting a plurality of outer pulleys, the guide sleeve further comprising a transition surface, the bottom surface of the guide sleeve being formed with a first support surface and a second support surface, the transition surface being located at the back of the first support surface and at both sides of the through groove, one end of the transition surface near the junction of the first support surface and the second support surface being engaged with the outer rail, and the other end thereof being engaged with the inner rail; the height difference between one end and the other end of the transition surface, which are matched with the outer guide rail, is matched with the height difference between the inner guide rail and the outer guide rail, and when the curtain guide rail pulley moves between the free end of the outer guide rail and the free end of the inner guide rail, the outer pulley rolls through the other end from one end of the transition surface.

9. The window covering telescopic rail of claim 5, further comprising a window covering rail pulley rotatably mounted with a plurality of inner pulleys, the guide sleeve further comprising a transition table, a bottom surface of the guide sleeve being formed with a first support surface and a second support surface, the transition table being upwardly convex with respect to the first support surface and extending axially outward from a junction of the first support surface and the second support surface along the guide sleeve; the inner surface of the bottom of the outer guide rail is provided with a raised second sliding support surface, and the height of the second sliding support surface, compared with the inner bottom surface of the bottom of the outer guide rail, is higher than that of the transition table, compared with the first support surface; when the outer guide rail is matched with the guide sleeve, the transition table is in butt joint matching with the second sliding support surface in the axial direction of the guide sleeve; the inner sheave may slide up from the transition table onto the second sliding support surface or down from the second sliding support surface onto the transition table.

10. The telescopic guide rail for window curtains as claimed in claim 5, wherein the upper portion of the guide sleeve is formed with a first guide rail and a second guide rail, the bottom surface of the guide sleeve is formed with a first support surface and a second support surface, the first guide rail and the second guide rail are respectively located above the first support surface and the second support surface and extend along the axial direction of the guide sleeve, the first guide rail and the second guide rail are connected and a step is also provided at the connection of the first guide rail and the second guide rail; the first guide rail is matched with the top end of the inner guide rail, so that two sides of the inner guide rail are fixed relative to the guide sleeve, and the second guide rail is matched with the top end of the outer guide rail, so that two sides of the outer guide rail are fixed relative to the guide sleeve.

11. The window covering telescopic rail of claim 1, wherein the fixing member penetrates through the outer shell of the guide sleeve and partially extends into the guide sleeve, and the fixing member is connected with the inner rail and/or the outer rail to fix the inner rail and/or the outer rail relative to the guide sleeve.

12. The telescopic curtain rail of claim 9, wherein the fixing component is a fixing bolt, the guide sleeve is further provided with a fixing bolt hole matched with the fixing bolt, the fixing bolt hole penetrates through the guide sleeve, and the fixing bolt can extend into the guide sleeve through the fixing bolt hole to fix the inner rail; or

The fixing assembly comprises a fixing bolt and a fixing plate, the fixing plate is arranged in the guide sleeve, the guide sleeve and the fixing plate are both provided with fixing bolt holes matched with the fixing bolt, and the fixing plate moves inwards to press and fix the inner guide rail or moves outwards to clamp and fix the inner guide rail between the fixing plate and the guide sleeve under the rotating matching of the fixing bolt and the fixing bolt holes.

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