A retractable curtain rail
Through the design of the inner and outer rails combined with the transmission unit, the unique winding structure is used to achieve expansion and contraction of curtain rails, which solves the problems of low efficiency, high cost and poor applicability of traditional curtain rails, and realizes the efficient industrial production of curtain rails.
Patent Information
- Application Number
- CN202111682199.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-01-22
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2041-01-22
AI Technical Summary
Traditional curtain guide rails need to be customized for production, which is low efficiency, high cost, and large in size and poor in the expansion and contraction process, which is not conducive to large-scale industrial production.
The design of the inner and outer rails combined with the transmission unit is adopted, including the driving wheel, the driven wheel, the first fixed pulley, the second fixed pulley and the belt. The unique winding structure ensures that the belt length remains unchanged, and drives the position of the fixed pulley to change. Achieve the expansion and contraction of curtain rails.
It simplifies telescopic operation, reduces production and transportation costs, has a wide range of applications, and is conducive to large-scale industrial production.
Smart Images
Figure CN114451769B_ABST
Abstract
Description
[0001] This invention is a divisional application of the Chinese invention patent named “A retractable curtain rail” with application number: 202110091169.2 and application date: 2021.01.22. Technical Field
[0002] The invention relates to the field of curtain telescopic rods, and in particular to a telescopic curtain guide rail. Background Art
[0003] Curtains are household items installed at windows to provide shade. Currently, the widths of walls with windows in various rooms vary. Therefore, the production of curtain rails requires measuring the width of the window wall first, and then completing the production of the corresponding curtain rails according to the measured dimensions. This type of curtain rail needs to be customized one by one, and cannot be mass-produced industrially; it also requires on-site measurement, which wastes manpower and material resources; if there are errors in the measurement or production process, the produced curtain rail may become unusable and need to be reworked. Therefore, the traditional curtain rails are customized, which is inefficient, costly, and poorly applicable.
[0004] Based on the above problems, more and more people have begun to study telescopic curtain rails, that is, the length of the curtain rails can be adjusted, so that a retractable curtain rail of one specification can be suitable for windows of multiple sizes. Since the retractable curtain rail is still in its infancy, during the extension and retraction of the curtain rail, it is necessary to use multiple pulleys for winding. The existing winding method increases the size of the curtain rail, limits the applicable occasions, and is not conducive to industrial mass production. Summary of the invention
[0005] In view of the deficiencies of the prior art, an object of the present invention is to provide a retractable curtain rail.
[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical solution: a retractable curtain rail, comprising an inner rail (2), an outer rail (1) and a transmission unit, wherein the inner rail (2) is connected to one side of the outer rail (1), the inner rail (2) is embedded in the outer rail (1) and can slide along the outer rail (1); the transmission unit comprises a driving wheel (31), a driven wheel (32), a first fixed pulley (33), a second fixed pulley (34) and a belt (35);
[0007] The driving wheel (31) and the driven wheel (32) are respectively located at the two ends of the retractable curtain rail; the driving wheel (31) is connected to the motor; the first fixed pulley (33) and the second fixed pulley (34) are respectively located at the other ends of the inner rail and the outer rail; the driving wheel and the first fixed pulley are simultaneously located at the two ends of the inner rail or the outer rail; the first fixed pulley (33) and the second fixed pulley (34) are located on the same side of the inner rail (2) and the outer rail (1); the belt (35) is sequentially wound around the driving wheel (31), the driven wheel (32), the first fixed pulley (33) and the second fixed pulley (34);
[0008] When the inner rail (2) moves toward the outer rail (1), 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 inner rail (2) moves in a direction away from the outer rail (1), the distance between the driven wheel and the driving wheel increases, and the distance between the first fixed pulley and the second fixed pulley decreases.
[0009] Furthermore, the outer rail (1) comprises a first closed groove at the upper end and a first open groove at the lower end; the inner rail (2) comprises a second closed groove at the upper end and a second open groove at the lower end, and the first closed groove at the upper end is embedded in the second closed groove at the upper end, and the second open groove at the lower end is embedded in the first open groove at the lower end.
[0010] Furthermore, the horizontal cross-sectional area of the second opening groove at the lower end is smaller than the horizontal cross-sectional area of the first opening groove at the lower end, and one of the side walls of the second opening groove at the lower end contacts one of the side walls of the first opening groove at the lower end; the other side wall of the second opening groove at the lower end and the other side wall of the first opening groove at the lower end form a fixed pulley chamber (21); the bottom of the fixed pulley chamber (21) includes the bottom surface of the outer rail (1) and the bottom surface of the inner rail (2) located at the upper end of the bottom surface of the outer rail (1) and matching the bottom surface of the outer rail (1);
[0011] A driving wheel (31) is fixed to the end of the outer rail (1) away from the inner rail (2), and the driving wheel (31) is connected to the motor. A first fixed pulley (33) is fixed to the end of the outer rail (1) close to the inner rail (2); a driven wheel (32) is fixed to the end of the inner rail (2) away from the outer rail (1), and a second fixed pulley (34) is fixed to the end of the inner rail (2) close to the outer rail (1).
[0012] Furthermore, the inner rail (2) also includes a first partition (22), the first partition is located inside the second open groove, and the upper end of the first partition is fixedly connected to the outer side of the bottom of the second closed groove at the upper end; the belts on both sides of the driven wheel are respectively located on both sides of the first partition.
[0013] Furthermore, the first fixed pulley is fixed to the end of the outer rail (1) by a first fixing member, and the first fixing member covers the outer sides of the inner rail (2) and the outer rail (1) at the same time. The first fixing member covering the outer side of the inner rail (2) extends into the fixed pulley chamber (21) to fix the central axis of the first fixed pulley, and the first fixing member covering the outer side of the outer rail (1) is fixed to the outer side of the outer rail (1) by fixing screws.
[0014] Furthermore, the central axis of the second fixed pulley is fixed to the side wall of the second opening groove at the lower end close to the fixed pulley chamber (21) through a second fixing member, and the central axis of the second fixed pulley and the side wall of the second opening groove close to the fixed pulley chamber (21) are located in the same plane; the belts on both sides of the second fixed pulley are respectively located on both sides of the side wall of the lower second opening groove close to the fixed pulley chamber (21).
[0015] Furthermore, the outer rail (1) includes an L-shaped partition (11), which is located in the pulley chamber and fixedly connected to the inner wall of the first opening groove at the lower end; the belts on both sides of the first fixed pulley are respectively located on both sides of the L-shaped partition (11).
[0016] Furthermore, the openings of the first opening groove at the lower end and the second opening groove at the lower end both include right-angled corners (23), the right-angled corners of the first opening groove at the lower end and the right-angled corners of the second opening groove at the lower end match, and the upper surfaces of the right-angled corners are located in the same horizontal plane.
[0017] Furthermore, the belt is connected to a belt buckle, the lower end of the belt buckle is connected to a pulley, and the pulley is connected to the curtain cloth.
[0018] Furthermore, the bottoms of the first upper closed groove and the second upper closed groove include matching protrusions.
[0019] The beneficial effects of the present invention are as follows: the unique winding structure adopted by the present invention ensures that the belt length remains unchanged and is always in a tensioned state during the extension and retraction of the curtain; in the present invention, the positions of the two fixed pulleys are changed simultaneously when the curtain guide rail is extended and retracted, the extension and retraction operation is simple, the floor space occupied is small, it is conducive to large-scale industrial production, has a wide range of applications, and reduces transportation costs and production costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Attached Figure 1 It is an overall schematic diagram of the telescopic guide rail in the present invention;
[0021] Attached Figure 2 It is a schematic diagram of the winding of the belt in the present invention;
[0022] Attached Figure 3 is a cross-sectional schematic diagram of the outer rail;
[0023] Attached Figure 4 is a cross-sectional schematic diagram of the inner rail;
[0024] Attached Figure 5 It is a cross-sectional schematic diagram of the inner rail and the outer rail in the present invention;
[0025] Attached Figure 6 is a schematic structural diagram of the first fixing member in the present invention;
[0026] Figure numerals: 1, outer rail; 11, L-shaped partition; 2, inner rail; 21, fixed pulley chamber; 22, first partition; 23, bend; 31, driving wheel; 32, driven wheel; 33, first fixed pulley; 331, first fixing member; 34, second fixed pulley; 35, belt; 4 pulley. DETAILED DESCRIPTION
[0027] Below, the present invention is further described in conjunction with the accompanying drawings and specific embodiments:
[0028] Please see attached Figure 1-6 The present invention discloses a retractable curtain rail, comprising an inner rail 2, an outer rail 1 and a transmission unit, wherein the inner rail 2 is connected to one side of the outer rail 1, the inner rail 2 is embedded in the outer rail 1 and can slide along the outer rail 1; the transmission unit comprises a driving wheel 31, a driven wheel 32, a first fixed pulley 33, a second fixed pulley 34 and a belt 35. The driving wheel 31 and the driven wheel 32 are respectively located at two ends of the retractable curtain rail, and the two ends of the retractable curtain rail are the ends where the inner rail and the outer rail are far away from each other, that is, the driving wheel and the driven wheel are respectively located at two ends of the inner rail and the outer rail, and specifically, the driving wheel can be located at one end of the inner rail or one end of the outer rail. The driving wheel 31 is connected to the motor; the first fixed pulley 33 and the second fixed pulley 34 are respectively located at the other end of the inner rail and the outer rail; in order to distinguish the first fixed pulley and the second fixed pulley, the present invention stipulates that the driving wheel and the first fixed pulley are simultaneously located at both ends of the inner rail or the outer rail, and the driven wheel and the second fixed pulley are simultaneously located at both ends of the outer rail or the inner rail. Of course, the first fixed pulley and the second fixed pulley are only used to distinguish them in naming. When the driving wheel and the second fixed pulley are simultaneously located at both ends of the inner rail or the outer rail, it is only necessary to interchange the first fixed pulley and the second fixed pulley described below in the present invention.
[0029] The uniqueness of the transmission unit of the present invention lies in that the first fixed pulley 33 and the driving pulley 31 are fixed at both ends of the outer rail 1, the second fixed pulley 34 and the driven pulley 32 are fixed at both ends of the inner rail 2, and the belt 35 is wound in the manner of driving pulley 31-driven pulley 32-second fixed pulley 34-first fixed pulley 33-driving pulley 31, and the first fixed pulley 33 and the second fixed pulley 34 are located on the same side of the inner rail 2 and the outer rail 1. This winding method ensures that when the driving pulley 31 is close to the driven pulley 32, the first fixed pulley 33 is away from the second fixed pulley 34, ensuring that the total length of the belt 35 remains unchanged. This winding method is simple, occupies a small area, and reduces production costs and transportation costs.
[0030] Please see attached Figure 2-6 In the present invention, the outer rail 1 includes a first closed groove at the upper end and a first open groove at the lower end; the inner rail 2 includes a second closed groove at the upper end and a second open groove at the lower end, and the first closed groove at the upper end is embedded in the second closed groove at the upper end, and the second open groove at the lower end is embedded in the first open groove at the lower end. The horizontal cross-sectional area of the second open groove at the lower end is smaller than the horizontal cross-sectional area of the first open groove at the lower end, and one of the side walls of the second open groove at the lower end contacts one of the side walls of the first open groove at the lower end; the other side wall of the second open groove at the lower end and the other side wall of the first open groove at the lower end form a fixed pulley chamber 21. In the above statement, the closed groove refers to the groove having a bottom as shown in the upper ends of the inner rail 2 and the outer rail 1; the open groove refers to the groove having a cavity structure as described in the lower ends of the inner rail 2 and the outer rail 1, and the upper end surface of the cavity structure shares a surface with the bottom of the closed groove. It can be clearly seen from the accompanying drawings that the lower end of the outer rail 1 is an integral open groove structure, while the lower end of the inner rail 2 includes an open groove structure and a fixed pulley chamber 21, and only the first fixed pulley is installed in the fixed pulley chamber 21, and the second fixed pulley is just located in the plane of the common side of the second open groove at the lower end and the fixed pulley chamber 21.
[0031] Please see attached Figure 2-6 The bottom of the fixed pulley chamber 21 includes the bottom surface of the outer rail 1 and the bottom surface of the inner rail 2 located at the upper end of the bottom surface of the outer rail 1 and matched with the bottom surface of the outer rail 1. The outer rail 1 includes an L-shaped partition 11, which is located in the pulley chamber and fixedly connected to the inner side wall of the first open groove at the lower end; the belts on both sides of the first fixed pulley are respectively located on both sides of the L-shaped partition 11. The inner rail 2 also includes a first partition 22, which is located inside the second open groove, and the upper end of the first partition 22 is fixedly connected to the outer side of the bottom of the second closed groove at the upper end; the belts on both sides of the driven wheel are respectively located on both sides of the first partition 22.
[0032] Please see attached Figure 2-6, the openings of the first opening groove at the lower end and the second opening groove at the lower end both include a bend 23, the bends 23 of the first opening groove at the lower end and the second opening groove at the lower end match, and the upper surfaces of the bends are located in the same horizontal plane. The bend here can be a right angle or a bend with an arc; the bend is set here because the pulley on the belt buckle needs to move between the inner rail 2 and the lower groove of the outer rail 1, and in order to ensure the smooth movement of the pulley, usually a clamping plate is set inside and outside the groove of the pulley, respectively. The bend here can ensure that the pulley can smoothly transition from the inner rail 2 to the outer rail 1, and smoothly slide in the overlapping area of the inner rail 2 and the outer rail 1. The bottom of the grooves of the first closed groove at the upper end and the second closed groove at the upper end include matching protrusions.
[0033] Please see attached Figure 6 In the present invention, the first fixed pulley is fixed to the end of the outer rail 1 by a first fixing member, and the first fixing member covers the outer sides of the inner rail 2 and the outer rail 1 at the same time. The first fixing member covering the outer side of the inner rail 2 extends into the fixed pulley chamber 21 to fix the central axis of the first fixed pulley, and the first fixing member covering the outer side of the outer rail 1 is fixed to the outer side of the outer rail 1 by fixing screws. It is precisely because the first fixed pulley is fixed to the end where the outer rail 1 contacts the inner rail 2, and the first fixed pulley is located in the fixed pulley chamber 21 and needs to be fixed to the outer rail 1 at the same time, so the present application cleverly uses a special first fixing member structure to lead the first fixed pulley out of the fixed pulley chamber 21 and fix it to the upper end of the outer rail 1. Specifically, as shown in the attached Figure 6 As described above, the first fixing member 331 is entirely covered on the outer side of the outer rail 1 and the inner rail 2. The first fixing member 331 covering the outer side of the inner rail 2 includes two horizontal fixing plates in the sliding chamber. The two horizontal fixing plates respectively fix the upper and lower center axes of the first fixed pulley. Two screw holes are set on the first fixing member covering the top of the outer rail 1. Two fixing screws respectively penetrate the two screw holes to fix the first fixing member to the upper end of the outer rail 1. In summary, the first fixing member is located exactly where the inner rail 2 and the outer rail 1 are connected, and is fixed on the outer rail 1, while the first fixing member located in the fixed pulley chamber 21 is used to fix the center axis of the first fixed pulley.
[0034] In the present invention, the central axis of the second fixed pulley is fixed to the side wall of the second opening groove at the lower end close to the fixed pulley chamber 21 through a second fixing member, and the central axis of the second fixed pulley and the side wall of the second opening groove close to the fixed pulley chamber 21 are located in the same plane. In summary, in the present invention, the first fixed pulley is located in the fixed pulley chamber 21, and the second fixed pulley is located on the side of the fixed pulley chamber 21 close to the second opening groove at the lower end, that is, the central axis of the second fixed pulley and the side wall of the second opening groove close to the fixed pulley chamber 21 are located in the same plane. The overall winding method of the belt is shown in the attached figure. Figure 2 shown.
[0035] In the present invention, the belt is connected to the belt buckle, the lower end of the belt buckle is connected to the pulley, and the pulley is connected to the curtain cloth. When the motor drives the driving wheel to rotate, the driving wheel drives the belt to rotate, and then drives the curtain cloth to move, so as to realize the opening and closing of the curtain cloth.
[0036] The unique winding structure adopted by the present invention ensures that the belt length remains unchanged and is always in a tensioned state during the extension and retraction of the curtain. In the present invention, the positions of the two fixed pulleys are changed simultaneously when the curtain guide rail is extended and retracted. The extension and retraction operation is simple, and the floor space occupied is small, which is conducive to large-scale industrial production, has a wide range of applications, and reduces transportation costs and production costs.
[0037] For those skilled in the art, various other corresponding changes and deformations can be made according to the technical solutions and concepts described above, and all of these changes and deformations should fall within the protection scope of the claims of the present invention.
Claims
1. A retractable curtain rail, characterized in that: The invention comprises an inner rail (2), an outer rail (1) and a transmission unit, wherein the inner rail (2) is connected to one side of the outer rail (1), the inner rail (2) is embedded in the outer rail (1) and can slide along the outer rail (1); the transmission unit comprises a driving wheel (31), a driven wheel (32), a first fixed pulley (33), a second fixed pulley (34) and a belt (35); the driving wheel (31) and the driven wheel (32) are respectively located at two ends of the retractable curtain guide rail; The driving wheel (31) is connected to the motor; the driving wheel (31) is located at one end of the inner rail (2) or one end of the outer rail (1); the driving wheel (31) and the first fixed pulley (33) are fixed to both ends of the inner rail (2) or the outer rail (1); the driven wheel (32) and the second fixed pulley (34) are fixed to both ends of the outer rail (1) or the inner rail (2); the belt (35) is wound around the driving wheel (31), the driven wheel (32), the second fixed pulley (34) and the first fixed pulley (33) in sequence, and returns to the driving wheel (31); when the inner rail (2) moves toward the outer rail (1), 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 inner rail (2) moves in a direction away from the outer rail (1), the distance between the driven wheel and the driving wheel increases, and the distance between the first fixed pulley and the second fixed pulley decreases; The belt is connected to a belt buckle, and the lower end of the belt buckle is connected to a pulley; When the motor drives the driving wheel to rotate, the driving wheel drives the belt to rotate, thereby realizing the opening and closing of the curtain fabric; The outer rail (1) comprises a first opening groove at the lower end, the inner rail (2) comprises a second opening groove at the lower end, and the second opening groove at the lower end is embedded in the first opening groove at the lower end; The inner rail (2) further comprises a first partition plate (22), the first partition plate being located inside the second opening groove at the lower end, and the belts on both sides of the driven wheel being located on both sides of the first partition plate respectively.
2. A retractable curtain rail according to claim 1, characterized in that: The first fixed pulley (33) and the second fixed pulley (34) are located on the same side of the inner rail (2) and the outer rail (1); the outer rail (1) comprises a first closed groove at the upper end and a first open groove at the lower end; the inner rail (2) comprises a second closed groove at the upper end and a second open groove at the lower end, and the first closed groove at the upper end is embedded in the second closed groove at the upper end.
3. A retractable curtain rail according to claim 2, characterized in that: The horizontal cross-sectional area of the second opening groove at the lower end is smaller than the horizontal cross-sectional area of the first opening groove at the lower end, and one of the side walls of the second opening groove at the lower end contacts one of the side walls of the first opening groove at the lower end.
4. A retractable curtain rail according to claim 3, characterized in that: The bottom of the fixed pulley chamber (21) comprises a bottom surface of an outer rail (1) and a bottom surface of an inner rail (2) located at the upper end of the bottom surface of the outer rail (1) and matching the bottom surface of the outer rail (1); A driving wheel (31) is fixed to the end of the outer rail (1) away from the inner rail (2), and the driving wheel (31) is connected to the motor. A first fixed pulley (33) is fixed to the end of the outer rail (1) close to the inner rail (2); a driven wheel (32) is fixed to the end of the inner rail (2) away from the outer rail (1), and a second fixed pulley (34) is fixed to the end of the inner rail (2) close to the outer rail (1).
5. The retractable curtain rail according to claim 2, characterized in that: The upper end of the first partition is fixedly connected to the outer side of the bottom of the second closed groove at the upper end.
6. The retractable curtain rail according to claim 3, characterized in that: The first fixed pulley is fixed to the end of the outer rail (1) by a first fixing member, the first fixing member covers the outer sides of the inner rail (2) and the outer rail (1) at the same time, the first fixing member covering the outer side of the inner rail (2) extends into the fixed pulley chamber (21) to fix the central axis of the first fixed pulley, and the first fixing member covering the outer side of the outer rail (1) is fixed to the outer side of the outer rail (1) by fixing screws; and / or, The central axis of the second fixed pulley is fixed to the side wall of the second opening groove at the lower end close to the fixed pulley chamber (21) through a second fixing member, and the central axis of the second fixed pulley and the side wall of the second opening groove close to the fixed pulley chamber (21) are located in the same plane; the belts on both sides of the second fixed pulley are respectively located on both sides of the side wall of the lower second opening groove close to the fixed pulley chamber (21).
7. The retractable curtain rail according to claim 3, characterized in that: The outer rail (1) comprises an L-shaped partition (11), wherein the L-shaped partition (11) is located in the pulley chamber and is fixedly connected to the inner side wall of the first opening groove at the lower end; the belts on both sides of the first fixed pulley are respectively located on both sides of the L-shaped partition (11).
8. The retractable curtain rail according to claim 1, characterized in that: The openings of the first opening groove at the lower end and the second opening groove at the lower end both include right-angled corners (23), the right-angled corners of the first opening groove at the lower end and the right-angled corners of the second opening groove at the lower end match, and the upper surfaces of the right-angled corners are located in the same horizontal plane.
9. The retractable curtain rail according to claim 1, characterized in that: The groove bottoms of the upper first closed groove and the upper second closed groove include matching protrusions.