Curtain telescopic track

Abstract

The utility model relates to a curtain telescopic track. The tackle solves the technical problem that an existing tackle is unstable in contact with a rail to cause jamming and the like. Comprising a large track profile and a small track profile which are connected in a sleeved mode, a large track opening is formed in one side of the large track profile, a small track opening is formed in one side of the small track profile, one end of the small track profile is located on the circumferential inner side of one end of the large track profile in an inserted connection mode through an inserted connection locating structure, and large track guide parts are arranged on the two sides of the large track opening respectively. Small rail guide parts are arranged on the two sides of the small rail opening respectively, the height of the side, located on the inner side of the large rail profile, of the large rail guide part is equal to the height of the side, located on the inner side of the small rail profile, of the small rail guide part, and a sliding guide structure is arranged in the small rail profile. The curtain tackle has the advantages that the design of the sliding guide structure and the guide limiting assembly is adopted, when the curtain tackle slides in the track, certain stability can be provided for the tackle, and the large track guide part and the small track guide part can ensure that the tackle slides stably.

Description

Technical Field

[0001] The utility model belongs to the technical field of curtain tracks, and in particular relates to a curtain telescopic track. Background Art

[0002] As people's living standards improve, the types of household items are becoming more and more abundant. Curtains are essential household items for noise reduction and light shielding. In order to facilitate the installation of curtains, some people have developed curtain tracks with adjustable lengths. The length of the track can be freely adjusted according to the measurement data. In the prior art, the pulley is prone to shaking during the sliding process due to the unreasonable design of the telescopic track, which can cause the pulley to collide with the track, causing the curtain to shake, make abnormal noises, etc. At the same time, the sliding surfaces of the two tracks are different, which will cause the pulley to be unstable in contact with the track and cause jamming.

[0003] In order to solve the deficiencies of the prior art, people have conducted long-term exploration and proposed various solutions. For example, a Chinese patent document discloses a curtain extension kit [201810808052.X], including a mother rail, a sub-rail arranged in the mother rail, and a hanging wheel; the lower parts of the mother rail and the sub-rail are both provided with notches; the lower part of the mother rail is a pair of outer rails located on both sides of the notch of the mother rail; the lower part of the sub-rail is a pair of inner rails located on both sides of the notch of the sub-rail and matched with the outer rail; the edge of the outer rail is provided with a first slide rail, and the edge of the inner rail is provided with a second slide rail; the hanging wheel slides along the notch on the first slide rail and the second slide rail; the upper part of the sub-rail is a pair of first grooves matched with the mounting code of the external device; the upper sides of the inner wall of the mother rail are provided with support members for supporting the first groove, and the distance from the upper wall of the first groove to the lower surface of the inner rail is less than the distance from the upper surface of the support member to the upper surface of the outer rail.

[0004] The above solution solves the problem that the existing pulley shakes and collides with the track when sliding to a certain extent, but the solution still has many shortcomings, such as the unstable contact between the pulley and the track causing jamming. Summary of the invention

[0005] The utility model aims to provide a curtain telescopic track in view of the above problems.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a curtain telescopic track, comprising a large track profile and a small track profile which are connected to each other in a sleeve manner, one side of the large track profile is provided with an axially extending large track opening, and one side of the small track profile is provided with a small track opening which is connected to the large track opening, one end of the small track profile is plugged and positioned at the circumferential inner side of one end of the large track profile through a plug-in positioning structure, both sides of the large track opening are respectively provided with a large track guide portion extending to the inner side of the large track profile, both sides of the small track opening are respectively provided with a small track guide portion extending to the inner side of the small track profile and located on the side of the large track guide portion away from the large track opening, and the height of the side of the large track guide portion located on the inner side of the large track profile and the side of the small track guide portion located on the inner side of the small track profile are equal, and the small track profile has an axially extending sliding guide structure. The pulley moves on the large track guide part and the small track guide part. The heights of the large track guide part and the small track guide part are equal, which can ensure the stability of the pulley when moving. At the same time, the sliding guide structure can reduce the shaking of the pulley during operation. The large track profile and the small track profile are connected by a plug-in positioning structure, so that the length of the curtain track can be freely adjusted to improve applicability.

[0007] In the above-mentioned curtain telescopic track, the large track guide part is formed by vertically bending the two sides of the large track opening toward the inside of the large track profile, and the large track guide part extends axially along the large track profile, and the large track guide part extends to the side inside the large track profile and has a large track sliding surface. When the pulley is in the large track profile, it contacts the large track sliding surface.

[0008] In the above-mentioned curtain telescopic track, the small track guide part is integrally formed on both sides of the small track opening and extends along the axial direction of the small track profile. The small track profile extends to the side inside the small track profile and has a small track sliding surface that is flush with the large track sliding surface. When the pulley is in the small track profile, it contacts the small track sliding surface. At the same time, when the large track profile and the small track profile meet, the pulley is above the large track sliding surface and the small track sliding surface at the same time, and the large track sliding surface is flush with the small track sliding surface, thereby reducing the jamming phenomenon.

[0009] In the above-mentioned curtain telescopic track, the plug-in positioning structure includes two plug-in parts axially arranged on the circumferential inner side of the large track profile and located on the side of the large track guide part away from the large track opening, and the small track profile is axially provided with plug-in grooves corresponding to the plug-in parts one by one and located on both sides of the small track opening, and the plug-in parts and the plug-in grooves are plug-in arranged with each other.

[0010] In the above-mentioned curtain telescopic track, the plug-in slot is in the shape of a dovetail slot and the plug-in portion matches the shape of the plug-in slot. The large track profile is connected to the plug-in slot of the small track profile through the plug-in portion, and the large track profile and the small track profile can be freely extended and retracted. At the same time, the plug-in slot adopts the design of a dovetail slot, which improves the connection firmness.

[0011] In the above-mentioned curtain telescopic track, the sliding guide structure includes two guide grooves axially arranged on the circumferential inner side of the small track profile and located on the side of the small track guide part away from the small track opening, and a guide limit assembly is also provided on the circumferential inner side of the small track profile.

[0012] In the above-mentioned curtain telescopic track, the guide limit assembly includes two small track lower guide limit plates axially arranged on the inner side of the small track profile and located inside the side of the small track profile with the small track opening, the small track lower guide limit plates are symmetrically arranged on both sides of the small track opening, the guide groove is formed between the small track lower guide limit plates and the small track guide part, and the small track profile is provided with a small track upper guide limit plate on the inner side of the small track profile and located inside the side of the small track profile away from the small track opening, which is respectively arranged in a one-to-one correspondence with the small track lower guide limit plate. When the pulley moves, it will come into contact with the small track upper guide limit plate and the small track lower guide limit plate, and the small track upper guide limit plate and the small track lower guide limit plate can limit the shaking degree of the pulley and improve the running stability.

[0013] In the above-mentioned curtain telescopic track, the large track profile is axially provided with a large track recessed portion on the circumferential outer side, which is located away from the large track opening and recessed toward the inner side of the large track profile, and the large track profile is symmetrically provided with accommodating areas on both sides of the large track recessed portion on the circumferential inner side.

[0014] In the above-mentioned curtain telescopic track, the cross section of the small track profile is rectangular, and small track extension parts extending into the accommodating area are provided on the circumferential outer side of the small track profile and away from the small track opening.

[0015] In the above-mentioned curtain telescopic track, the inner side of the large track recessed portion is provided with a large track thickened portion, and the side of the small track profile away from the small track opening is provided with a small track thickened portion corresponding to the large track thickened portion, and a plurality of positioning screw holes are provided on the large track thickened portion, and positioning bolts that abut against the small track thickened portion are provided in the positioning screw holes.

[0016] Compared with the existing technology, the advantages of the utility model are:

[0017] 1. The device adopts the design of sliding guide structure and guide limit assembly. When the curtain pulley slides in the track, it can provide a certain stability for the pulley, and the large track guide part and the small track guide part can ensure the smooth sliding of the pulley.

[0018] 2. The device utilizes a plug-in positioning structure to allow the large track profile and the small track profile to be plugged into each other. At the same time, the length of the large track profile and the small track profile can be freely adjusted through the plug-in portion and the plug-in groove, and they are fixed with positioning screw holes and positioning bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 It is a structural sectional view of the utility model.

[0021] Figure 3 It is a structural sectional view of the large track profile in the utility model.

[0022] Figure 4 It is a structural sectional view of the small and medium track profile of the utility model.

[0023] In the figure: large track profile 1, large track opening 11, large track guide part 12, large track sliding surface 13, large track recessed part 14, accommodating area 15, large track thickened part 16, positioning screw hole 17, small track profile 2, small track opening 21, small track guide part 22, small track sliding surface 23, small track extension part 24, small track thickened part 25, plug-in positioning structure 3, plug-in part 31, plug-in groove 32, sliding guide structure 4, guide groove 41, guide limit assembly 5, small track lower guide limit plate 51, small track upper guide limit plate 52. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] like Figure 1-4As shown, a curtain telescopic track comprises a large track profile 1 and a small track profile 2 which are connected to each other in a sleeve manner, one side of the large track profile 1 is provided with an axially extending large track opening 11, and one side of the small track profile 2 is provided with a small track opening 21 which is connected to the large track opening 11, one end of the small track profile 2 is plugged and positioned at the circumferential inner side of one end of the large track profile 1 through a plug-in positioning structure 3, both sides of the large track opening 11 are respectively provided with a large track guide portion 12 extending to the inner side of the large track profile 1, and both sides of the small track opening 21 are respectively provided with a small track guide portion 22 extending to the inner side of the small track profile 2 and located on the side of the large track guide portion 12 away from the large track opening 11, and the large track guide portion 12 is located on one side of the inner side of the large track profile 1 and the small track guide portion 22 is located on the side of the inner side of the small track profile 2 at the same height, and the small track profile 2 is provided with an axially extending sliding guide structure 4. The trolley moves on the large track guide part 12 and the small track guide part 22. The heights of the large track guide part 12 and the small track guide part 22 are equal, so that the stability of the trolley during movement can be ensured. At the same time, the sliding guide structure 4 can reduce the shaking of the trolley during operation. The large track profile 1 and the small track profile 2 are connected by the plug-in positioning structure 3, so that the length of the curtain track can be freely adjusted to improve applicability.

[0026] like Figure 3 As shown, the large track guide part 12 is formed by vertically bending both sides of the large track opening 11 toward the inside of the large track profile 1, and the large track guide part 12 extends axially along the large track profile 1, and one side of the large track guide part 12 extending into the large track profile 1 has a large track sliding surface 13. When the pulley is in the large track profile 1, it contacts the large track sliding surface 13.

[0027] like Figure 4 As shown, the small track guide part 22 is integrally formed on both sides of the small track opening 21 and extends axially along the small track profile 2. The small track profile 2 extends to one side of the small track profile 2 and has a small track sliding surface 23 that is flush with the large track sliding surface 13. When the pulley is in the small track profile 2, it contacts the small track sliding surface 23. At the same time, when the large track profile 1 and the small track profile 2 are at the junction, the pulley is above the large track sliding surface 13 and the small track sliding surface 23 at the same time, and the large track sliding surface 13 is flush with the small track sliding surface 23, which reduces the jamming phenomenon.

[0028] Combination Figure 2-Figure 4 As shown, the plug-in positioning structure 3 includes two plug-in parts 31 axially arranged on the circumferential inner side of the large rail profile 1 and located on the side of the large rail guide part 12 away from the large rail opening 11, and the small rail profile 2 is axially provided with plug-in grooves 32 corresponding to the plug-in parts 31 and located on both sides of the small rail opening 21 on the circumferential outer side, and the plug-in parts 31 and the plug-in grooves 32 are plug-in arranged with each other.

[0029] The plug-in slot 32 is in the shape of a dovetail slot and the plug-in portion 31 matches the shape of the plug-in slot 32. The large track profile 1 is connected to the plug-in slot 32 of the small track profile 2 through the plug-in portion 31, and the large track profile 1 and the small track profile 2 can be freely extended and retracted. At the same time, the plug-in slot 32 adopts the design of a dovetail slot, which improves the connection firmness.

[0030] Specifically, the sliding guide structure 4 includes two guide grooves 41 axially arranged on the inner side of the small track profile 2 and located on the side of the small track guide portion 22 away from the small track opening 21 , and a guide limit assembly 5 is also provided on the inner side of the small track profile 2 .

[0031] Further, the guide limit assembly 5 includes two small track lower guide limit plates 51 axially arranged on the inner side of the small track profile 2 and located inside the side of the small track profile 2 having the small track opening 21, the small track lower guide limit plates 51 are symmetrically arranged on both sides of the small track opening 21, the guide groove 41 is formed between the small track lower guide limit plates 51 and the small track guide portion 22, and the small track profile 2 is provided with a small track upper guide limit plate 52 arranged one-to-one with the small track lower guide limit plate 51 on the inner side of the small track profile 2 and located inside the side of the small track profile 2 away from the small track opening 21. When the pulley moves, it will contact the small track upper guide limit plate 52 and the small track lower guide limit plate 51, and the small track upper guide limit plate 52 and the small track lower guide limit plate 51 can limit the shaking degree of the pulley and improve the running stability.

[0032] Furthermore, the large rail profile 1 is axially provided with a large rail recessed portion 14 located away from the large rail opening 11 and recessed toward the inner side of the large rail profile 1 on the circumferential outer side, and the large rail profile 1 is symmetrically provided with accommodating areas 15 located on both sides of the large rail recessed portion 14 on the circumferential inner side.

[0033] Meanwhile, the small rail profile 2 has a rectangular cross section, and small rail extension portions 24 extending into the accommodating area 15 are provided on the circumferential outer side of the small rail profile 2 and on a side away from the small rail opening 21 .

[0034] like Figure 1 As shown, the inner side of the large rail recessed portion 14 is provided with a large rail thickened portion 16, and the side of the small rail profile 2 away from the small rail opening 21 is provided with a small rail thickened portion 25 corresponding to the large rail thickened portion 16, and a plurality of positioning screw holes 17 are provided on the large rail thickened portion 16, and positioning bolts abutting against the small rail thickened portion 25 are provided in the positioning screw holes 17.

[0035] The principle of this embodiment is:

[0036] The small track profile 2 is connected to the plug-in portion 31 of the large track profile 1 through the plug-in groove 32, so that the small track profile 2 and the large track profile 1 can freely adjust the length, and then fix them through the positioning screw hole 17 and the positioning bolt. The curtain pulley slides above the large track guide portion 12 and the small track guide portion 22, and the large track sliding surface 13 and the small track sliding surface 23 are flush with each other, thereby ensuring the sliding stability of the curtain pulley. At the same time, the design of the small track lower guide limit plate 51 and the small track upper guide limit plate 52 can reduce the phenomenon of the curtain pulley shaking left and right and detaching.

[0037] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0038] Although this article uses more terms such as large track profile 1, large track opening 11, large track guide part 12, large track sliding surface 13, large track recessed part 14, accommodating area 15, large track thickened part 16, positioning screw hole 17, small track profile 2, small track opening 21, small track guide part 22, small track sliding surface 23, small track extension part 24, small track thickened part 25, plug-in positioning structure 3, plug-in part 31, plug-in groove 32, sliding guide structure 4, guide groove 41, guide limit assembly 5, small track lower guide limit plate 51, small track upper guide limit plate 52, etc., it does not exclude the possibility of using other terms. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A curtain telescopic track, comprising a large track profile (1) and a small track profile (2) which are connected to each other, wherein one side of the large track profile (1) is provided with an axially extending large track opening (11), and one side of the small track profile (2) is provided with a small track opening (21) which is connected to the large track opening (11), characterized in that: One end of the small track profile (2) is inserted and positioned on the circumferential inner side of one end of the large track profile (1) through an insertion positioning structure (3); both sides of the large track opening (11) are respectively provided with large track guide parts (12) extending to the inner side of the large track profile (1); both sides of the small track opening (21) are respectively provided with small track guide parts (22) extending to the inner side of the small track profile (2) and located on the side of the large track guide part (12) away from the large track opening (11); the height of the side of the large track guide part (12) located on the inner side of the large track profile (1) and the side of the small track guide part (22) located on the inner side of the small track profile (2) are equal; and the small track profile (2) is provided with a sliding guide structure (4) extending axially therein.

2. A curtain telescopic track according to claim 1, characterized in that: The large track guide part (12) is formed by vertically bending the two sides of the large track opening (11) toward the inside of the large track profile (1), and the large track guide part (12) extends axially along the large track profile (1), and the side of the large track guide part (12) extending into the large track profile (1) is provided with a large track sliding surface (13).

3. A curtain telescopic track according to claim 2, characterized in that: The small track guide portion (22) is integrally formed on both sides of the small track opening (21) and is axially extending along the small track profile (2); one side of the small track profile (2) extending into the small track profile (2) has a small track sliding surface (23) flush with the large track sliding surface (13).

4. A curtain telescopic track according to claim 1, 2 or 3, characterized in that: The plug-in positioning structure (3) comprises two plug-in parts (31) axially arranged on the inner side of the large track profile (1) in the circumferential direction and located on the side of the large track guide part (12) away from the large track opening (11); the small track profile (2) is axially provided with plug-in grooves (32) corresponding to the plug-in parts (31) in the circumferential direction and located on both sides of the small track opening (21); and the plug-in parts (31) and the plug-in grooves (32) are plug-in arranged with each other.

5. The curtain telescopic track according to claim 4, characterized in that: The plug-in slot (32) is in the shape of a dovetail slot and the plug-in portion (31) matches the plug-in slot (32) in appearance.

6. The curtain telescopic track according to claim 4, characterized in that: The sliding guide structure (4) comprises two guide grooves (41) which are axially arranged on the inner side of the small track profile (2) in the circumferential direction and located on the side of the small track guide portion (22) away from the small track opening (21), and a guide limit assembly (5) is also provided on the inner side of the small track profile (2) in the circumferential direction.

7. The curtain telescopic track according to claim 6, characterized in that: The guide and limit assembly (5) comprises two small track lower guide and limit plates (51) axially arranged on the inner side of the small track profile (2) in the circumferential direction and located inside the side of the small track profile (2) having the small track opening (21); the small track lower guide and limit plates (51) are symmetrically arranged on both sides of the small track opening (21); the guide groove (41) is formed between the small track lower guide and limit plates (51) and the small track guide portion (22); and small track upper guide and limit plates (52) are arranged one-to-one with the small track lower guide and limit plates (51) respectively on the inner side of the small track profile (2) in the circumferential direction and located inside the side of the small track profile (2) away from the small track opening (21).

8. The curtain telescopic track according to claim 1, characterized in that: The large track profile (1) is axially provided with a large track recessed portion (14) located on a side away from the large track opening (11) and recessed toward the inside of the large track profile (1) on the circumferential outer side, and the large track profile (1) is symmetrically provided with accommodation areas (15) located on both sides of the large track recessed portion (14) on the circumferential inner side.

9. The curtain telescopic track according to claim 8, characterized in that: The small track profile (2) has a rectangular cross section, and is provided with small track extension portions (24) extending into the accommodating area (15) on the circumferential outer side of the small track profile (2) and away from the small track opening (21).

10. The curtain telescopic track according to claim 8, characterized in that: The inner side of the large track recessed portion (14) is provided with a large track thickened portion (16), and the side of the small track profile (2) away from the small track opening (21) is provided with a small track thickened portion (25) corresponding to the large track thickened portion (16), and the large track thickened portion (16) is provided with a plurality of positioning screw holes (17), and the positioning screw holes (17) are provided with positioning bolts that abut against the small track thickened portion (25).

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