Leveling device for curtain

Abstract

The invention relates to a curtain leveling device which comprises a long-strip-shaped movable middle beam, a first cavity part used for being tightly matched with a protruding part of a lead screw fixing base is arranged in the movable middle beam, a second cavity part used for assembling a clamping part of curtain cloth is arranged in the movable middle beam, and a third cavity part used for assembling a positioning part of a middle beam side cover is arranged in the movable middle beam. The screw rod fixing seat is used for supporting a threaded screw rod, a sliding block synchronously moving with the threaded screw rod is installed on the threaded screw rod, the sliding block is in clearance fit with the first cavity part, and a pull rope penetrating through the curtain cloth is fixed to the sliding block; and the end part of the movable middle beam is sleeved with a middle beam side cover. By arranging the leveling device, when the movable middle beam is not parallel to the lower windowsill, the threaded lead screw can be rotated to adjust the height of the movable middle beam on one side, so that the movable middle beam is as high as the lower windowsill, and the operation is simple and convenient. Meanwhile, the novel structure is installed in the movable middle beam in a hidden mode and is not exposed out of the curtain, and the overall attractiveness of the curtain is good.

Description

Technical Field

[0001] The invention relates to the technical field of curtain manufacturing, in particular to a curtain leveling device. Background Art

[0002] Curtains are common decorations that have the functions of sunshade, heat insulation and indoor light regulation. Curtains are of many types, such as opening and closing curtains, beaded roller curtains, accordion curtains, etc. Curtains are usually opened and closed manually. With the advancement of technology, people's requirements for the standard of home life are constantly improving, so electric curtains have come into being. Electric curtains include electric reels that can rotate forward and reverse, two left and right pull ropes wound on the electric reels, and curtains penetrated by the pull ropes. When the window needs to be shaded, the user can control the electric reel to rotate. At this time, the pull rope wound on the electric reel lowers the curtain under the action of the curtain's own gravity until it reaches the bottom edge of the window.

[0003] From an aesthetic point of view, the bottom surface of the curtain should be parallel to the bottom edge of the window, so this step is included in the factory production. Figure 2 Fixed rope buckles are set at the bottom of the pulling ropes at both ends. The position of the fixed rope buckles is adjusted to ensure that the bottom surface of the curtain (or the moving lower beam) is absolutely parallel to the top of the curtain, and then the moving lower beam is buckled.

[0004] In the actual installation and application process, if the top of the electric roller of the electric curtain is slightly tilted and not level during positioning, it will cause the bottom surface of the electric curtain to be not parallel to the bottom edge of the window. Similarly, if the bottom edge of the user's window is not level, it will be difficult to find the best fixed position for the top of the electric roller of the electric curtain. If the situation is not parallel, it is necessary to remove the movable lower beam during on-site installation, and then adjust the position of the fixed rope buckle to ensure that the bottom surface of the curtain (or the bottom cross bar) is absolutely parallel to the bottom edge of the curtain, and then buckle the movable lower beam. Sometimes multiple adjustments are required, and the operation is cumbersome.

[0005] Chinese Patent Publication (Announcement) No.: CN106050109A, Patent Title: Adjustment Device for Curtain Pull Cord and Retractable Curtain, which discloses "

[0005] In order to achieve the above-mentioned purpose, one of the technical solutions of the present invention is: an adjustment device for curtain pull cord, including a mounting seat for fixedly connecting the lower end of a curtain body, the mounting seat is provided with a first rope threading hole for passing the pull cord, the mounting seat is provided with a mounting groove, the first rope threading hole is provided on the groove wall of the mounting seat, the adjustment device also includes a locking member for winding and fixing the pull cord, the locking member can be detachably locked in the mounting groove, and there is a gap between the groove wall of the mounting groove and the locking member for accommodating the pull cord wound on the outer surface of the locking member." The present invention solves the technical problem that "

[0003] existing retractable and extendable curtains, such as Roman curtains, are generally retracted and extended by means of draw cords at least located on both sides of the curtain body. The upper end of the draw cord is tied to the curtain winding shaft and the winding or unwinding of the draw cord is controlled by a retracting device, and the lower end of the draw cord is tied to the bottom of the curtain. The length of the draw cord (the length in this article specifically refers to the length of the draw cord that can be inserted into the curtain body) is adjusted by visually adjusting the connection position between the lower end of the draw cord and the curtain to make the lengths of the draw cords consistent, otherwise different lengths will lead to different curtain heights and cause the curtain to be unbalanced. Moreover, in actual installation and use, the length of the draw cord needs to be adjusted according to the different weights of the curtains."

[0006] In the comparative document, the optimum length of the pull cord is adjusted specifically by “

[0025] when it is necessary to adjust the length of the pull cord 200, the locking member 2 is pulled out from the installation groove 10, and the rope winding position is adjusted until the desired length of the pull cord 200 is reached, and then the locking member 2 with the pull cord 200 wound around it is inserted into the installation groove 10. Since the installation groove 10 limits the locking member 2 and the pull cord 200, the lower end of the pull cord 200 is fixed and the pull cord 200 maintains the set length”. However, this structure with the installation groove and the mounting seat is exposed as a whole outside the curtain, which is a bit abrupt visually and has a poor user experience. Summary of the invention

[0007] The object of the present invention is to provide a curtain leveling device to solve the problems raised in the above background technology.

[0008] In order to solve the above technical problems, the present invention is achieved through the following technical measures: a curtain leveling device, characterized in that: it includes a long strip of movable middle beam, a first cavity portion for tightly fitting the protrusion of the screw rod fixing seat is provided in the movable middle beam, a second cavity portion for assembling the clamping portion of the curtain is provided in the movable middle beam, and a third cavity portion for assembling the positioning portion of the middle beam side cover is provided in the movable middle beam; the screw rod fixing seat is used to support the threaded screw, and a slider that moves synchronously with the threaded screw is installed on the threaded screw, the slider is clearance-matched with the first cavity portion, and a pull rope passing through the curtain is fixed on the slider; the end of the movable middle beam is sleeved with the middle beam side cover.

[0009] Compared with the prior art, the advantages of the present invention are: by setting a leveling device, when the moving middle beam is not parallel to the lower window edge, the threaded screw can be rotated to adjust the height of the moving middle beam so that the moving middle beam is at the same height as the lower window edge, and the operation is simple. At the same time, this new structure is hidden in the moving middle beam and is not exposed outside the curtain, so the overall appearance of the curtain is good.

[0010] As an improvement of the present invention, a screw support seat is provided on the middle beam side cover, and the threaded screw passes through the screw support seat. The purpose of selecting this design is that the screw support seat and the screw fixing seat on the middle beam side cover jointly fix the threaded screw.

[0011] As an improvement of the present invention, the end of the threaded screw is provided with a "I"-shaped slot, and the threaded screw is provided with a retaining spring. The purpose of selecting this design is that the "I"-shaped slot is used to assemble the adjustment handle to rotate the threaded screw, and the retaining spring is used to limit the threaded screw.

[0012] As an improvement of the present invention, a rope fixing hole is provided on the slider. The purpose of selecting this design is that the pull rope is bound to the rope fixing hole of the slider, and when the slider moves, the pull rope moves synchronously.

[0013] As an improvement of the present invention, one of the two side surfaces of the movable center beam is arc-shaped and the other is also arc-shaped; one of the two side surfaces of the center beam side cover is arc-shaped and the other is also arc-shaped. The purpose of selecting this design is to make the movable center beam and the center beam side cover symmetrical and both arc-shaped, which is convenient for flexible assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0015] In the attached picture:

[0016] Figure 1The figure is a schematic diagram of the position of the leveling device of the present invention in the curtain.

[0017] Figure 2 It is a schematic diagram of the traditional leveling structure described in the present invention.

[0018] Figure 3 The three-dimensional leveling device of the present invention is Figure 1 .

[0019] Figure 4 The three-dimensional leveling device of the present invention is Figure 2 .

[0020] Figure 5 The figure is an exploded view of the leveling device according to the present invention.

[0021] Figure 6 This is a cross-sectional view of the leveling device of the present invention in a curtain.

[0022] Figure 7 It is an enlarged view of the A part described in the present invention.

[0023] Figure 8 The figure is a schematic diagram of the installation of the movable middle beam and the screw rod fixing seat described in the present invention.

[0024] Fig. 9 The figure is a schematic diagram of the installation of the movable center beam and the center beam side cover according to the present invention.

[0025] Fig.10 This is a perspective view of the new curtain with a leveling device according to the present invention.

[0026] Explanation of the reference numerals in the accompanying drawings: 1. movable middle beam; 2. screw rod fixing seat; 3. protrusion; 4. first cavity portion; 5. curtain; 6. clamping portion; 7. second cavity portion; 8. middle beam side cover; 9. positioning portion; 10. third cavity portion; 11. threaded screw; 12. slider; 13. pulling rope; 14. leveling device; 15. screw rod supporting seat; 16. slot; 17. retaining spring; 18. rope fixing hole; 20. arc; 22. electric reel; 23. movable lower beam; 24. fixed rope buckle; 25. bottom cross bar; 26. adjustment handle; 27. telescopic portion; 29. ​​screw rod hole. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0028] Example 1

[0029] Please refer to Figure 1 -10.

[0030] The present embodiment provides a curtain leveling device 14, comprising a long strip of movable middle beam 1, wherein the movable middle beam 1 is provided with a first cavity portion 4 for tightly fitting the protrusion 3 of the screw rod fixing seat 2, wherein the movable middle beam 1 is provided with a second cavity portion 7 for assembling the clamping portion 6 of the curtain 5 (this function is equivalent to the movable lower beam 23 in the traditional technology), wherein the movable middle beam 1 is provided with a third cavity portion 10 for assembling the positioning portion 9 of the middle beam side cover 8; the screw rod fixing seat 2 is used to support the threaded screw 11, and a slider 12 is installed on the threaded screw 11 for synchronous movement with the threaded screw 11, wherein the slider 12 is clearance-matched with the first cavity portion 4, and a pull rope passing through the curtain 5 is fixed on the slider 12; and the end of the movable middle beam 1 is sleeved with the middle beam side cover 8.

[0031] In the embodiments of the present invention, please refer to Figure 5 . A screw support seat 15 is provided on the center beam side cover 8, and the threaded screw 11 passes through the screw support seat 15. The screw support seat 15 and the screw fixing seat 2 on the center beam side cover 8 jointly fix the threaded screw 11, so that the threaded screw 11 can rotate freely. An "I"-shaped groove 16 is provided at the end of the threaded screw 11, and the "I"-shaped groove 16 is used to assemble the adjustment handle 26 to rotate the threaded screw 11. A retaining spring 17 is provided on the threaded screw 11, and the retaining spring 17 is used to limit the threaded screw 11. A rope fixing hole 18 is provided on the slider 12. By binding the pulling rope 13 to the rope fixing hole 18 of the slider 12, when the slider 12 moves, the pulling rope 13 moves synchronously.

[0032] In the embodiments of the present invention, please refer to Fig. 9 . One of the two side surfaces of the movable center beam 1 is arc-shaped, and the other is also arc-shaped; one of the two side surfaces of the center beam side cover 8 is arc-shaped, and the other is also arc-shaped. The movable center beam and the center beam side cover are symmetrical on the left and right to facilitate flexible assembly. Two left and right third cavities 10 are provided in the movable center beam 1, and two protruding positioning parts 9 are provided on the center beam side cover 8. During installation, the two positioning parts 9 are pressed into the two third cavities 10 for interference fit to achieve fastening.

[0033] In the embodiments of the present invention, please refer to Figure 8 The movable middle beam 1 is provided with a flat first cavity 4, and the screw fixing seat 2 is provided with a protrusion 3. During installation, the protrusion 3 is pressed into the first cavity 4 to achieve tightening through interference fit. At the same time, the screw fixing seat 2 is provided with a screw hole 29 for passing the threaded screw 11.

[0034] In the embodiment of the present invention, they are connected as follows, please refer to Figure 6 and Figure 7The curtain 5 is divided into an elastic telescopic part 27 and a rigid clamping part 6 integrally formed with the telescopic part 27. The clamping part 6 of the curtain 5 is completely embedded in the entire second cavity part 7 of the movable middle beam 1 to achieve the connection between the two. The screw fixing seat 2 is tightened by interference fit with the first cavity part 4. The middle beam side cover 8 is tightened by interference fit with the third cavity part 10. The slider 12 is loosely matched with the first cavity part 4, so that the sliding can be driven by the rotation of the threaded screw 11 to become a linear movement of the slider 12, thereby driving the movement of the pull rope 13 fixed on the slider 12.

[0035] When the window needs to be shaded, the user can control the electric reel 22 to rotate. At this time, the pull rope 13 wound on the electric reel 22 lowers the curtain 5 under the gravity of the curtain 5 until it reaches the bottom edge of the window. Figure 2 During the production in the factory, the position of the fixed rope buckle 24 is adjusted to ensure that the bottom surface of the curtain 5 (some are bottom cross bars 25, some are directly pressing the clamping part 6 of the curtain 5) is absolutely parallel to the top of the curtain, and then the movable lower beam 23 is installed. One more production process will increase the production cost. Moreover, when installing on-site by the user, considering the horizontality of the actual window edge, it is necessary to remove the movable lower beam 23 and adjust the position of the fixed rope buckle 24 again. Since there is no distance scale for reference on the fixed rope buckle 24, the position of the fixed rope buckle 24 can only be adjusted according to the worker's experience, and then the parallelism is visually checked after buckling the movable lower beam 23, so sometimes multiple adjustments are required, and the operation is cumbersome.

[0036] The curtain leveling device 14 provided in this embodiment can save the process of leveling the bottom surface of the curtain 5 during factory production, and directly go to the user's site for debugging. For specific debugging methods, please refer to Figure 1 and Figure 3 When the bottom surface of the curtain 5 of the electric curtain (movable middle beam 1) is not parallel to the lower edge of the window, insert the auxiliary tool adjustment handle 26 into the "I"-shaped slot 16 of the threaded screw 11, rotate the adjustment handle 26, drive the threaded screw 11 to rotate, then drive the slider 12 to move, and then drive the pull rope 13 to move, so as to achieve the up and down movement of one end of the moving middle beam 1, and finally achieve the parallelism of the moving middle beam 1 and the lower edge of the window. The whole process is carried out on the periphery of the curtain, and there is no need to disassemble any parts such as the moving lower beam 23. The operation is convenient and quick, and the parallelism requirements between the curtain and the window can be completed by visual inspection.

[0037] The beneficial effect of the present invention is that by setting the leveling device 14, when the moving middle beam 1 is not parallel to the lower window edge, the threaded screw 11 can be rotated to adjust the height of the moving middle beam 1 so that the moving middle beam 1 is at the same height as the lower window edge, and the operation is simple and fast. Fig.10 Compared with the comparative document (China Patent Publication (Announcement) No.: CN106050109A, Patent Title: Adjustment Device for Curtain Cord and Retractable Curtain), this new structure has a leveling device 14 which is hidden in the movable middle beam 1 and is not exposed outside the curtain, so the overall appearance of the curtain is good.

[0038] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A curtain leveling device, characterized in that: The invention comprises a long strip-shaped movable middle beam (1), wherein a first cavity portion (4) is provided in the movable middle beam (1) for tightly fitting a protruding portion (3) of a screw rod fixing seat (2), wherein a second cavity portion (7) is provided in the movable middle beam (1) for fitting a clamping portion (6) of a curtain (5), and wherein a third cavity portion (10) is provided in the movable middle beam (1) for fitting a positioning portion (9) of a middle beam side cover (8); the screw rod fixing seat (2) is used to support a threaded screw rod (11), wherein a slider (12) is mounted on the threaded screw rod (11) and moves synchronously with the threaded screw rod (11), wherein the slider (12) is clearance-matched with the first cavity portion (4), and a pulling rope (13) passing through the curtain (5) is fixed on the slider (12); and the end of the movable middle beam (1) is sleeved with a middle beam side cover (8).

2. The curtain leveling device according to claim 1, characterized in that: A screw rod support seat (15) is provided on the center beam side cover (8), and the threaded screw rod (11) passes through the screw rod support seat (15).

3. The curtain leveling device according to claim 1, characterized in that: An "I"-shaped clamping groove (16) is provided at the end of the threaded screw rod (11), and a clamping spring (17) is provided on the threaded screw rod (11).

4. The curtain leveling device according to claim 1, characterized in that: The sliding block (12) is provided with a rope fixing hole (18).

5. The curtain leveling device according to claim 1, characterized in that: One of the two side surfaces of the movable center beam (1) is in an arc shape (20), and the other is also in an arc shape (20); one of the two side surfaces of the center beam side cover (8) is in an arc shape (20), and the other is also in an arc shape (20).

Images