Leveling device for curtain

Abstract

The utility model relates to a curtain leveling device which comprises a long-strip-shaped movable middle beam, a first cavity portion used for being tightly matched with a protruding portion of a lead screw fixing seat is arranged in the movable middle beam, and a second cavity portion used for assembling a clamping portion of curtain cloth is arranged in the movable middle beam. A third cavity part for assembling the positioning part of the 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 utility model relates to the technical field of curtain manufacturing, in particular to a curtain leveling device. Background Art

[0002] Curtains are common decorations, which have the functions of shading, heat insulation and adjusting indoor light. There are various types of curtains, such as draw curtains, beaded roller blinds, accordion curtains, etc. Usually, curtains are opened and closed manually. With the progress of technology, people's requirements for the level of home life are constantly increasing, so electric curtains have come into being. An electric curtain includes an electric scroll that can rotate forward and backward, two left and right lifting ropes wound around the electric scroll, a curtain cloth penetrated by the lifting ropes, etc. When the window needs to be shaded, the user can control the electric scroll to rotate. At this time, under the action of the self-gravity of the curtain cloth, the lifting ropes wound around the electric scroll lower the curtain cloth until it reaches the lower edge of the window.

[0003] From the aesthetic point of view, it is better that the bottom surface of the curtain cloth is parallel to the lower edge of the window at this time. Therefore, there is such a process in factory production. Refer to the attached Figure 2 , fixed rope buckles are arranged at the bottoms of the lifting ropes at both ends. By adjusting the positions of the fixed rope buckles, the absolute parallelism between the bottom surface (or the movable lower beam) of the curtain cloth and the top of the curtain is ensured, and then the movable lower beam is buckled.

[0004] During the actual installation and application process, if the top of the electric scroll of the electric curtain is a bit inclined and not horizontal during positioning, it will cause the bottom surface of the curtain cloth of the electric curtain to be not parallel to the lower edge of the window. Similarly, if the lower edge of the user's window is not horizontal itself, it is not easy to find the best fixing position for the top of the electric scroll of the electric curtain. If the non-parallel situation occurs, during on-site installation, the movable lower beam needs to be removed, and then by adjusting the positions of the fixed rope buckles, the absolute parallelism between the bottom surface (or the bottom cross bar) of the curtain cloth and the lower edge of the curtain is ensured, and then the movable lower beam is buckled. Sometimes, multiple adjustments are required, and the operation is rather cumbersome.

[0005] Chinese Patent Publication (Announcement) No.: CN106050109A, Patent Title: Adjusting Device for Curtain Pull Rope and Retractable Curtain, which discloses the technical solution of "

[0005] To achieve the above object, one of the technical solutions of the present invention is: An adjusting device for a curtain pull rope, including a mounting seat for fixedly connecting the lower end of the curtain body, a first rope passing hole for the pull rope to pass through is provided on the mounting seat, an installation groove is provided on the mounting seat, the first rope passing hole is opened on the groove wall of the mounting seat, the adjusting device further includes a locking member for winding and fixing the pull rope, the locking member is detachably clamped in the installation groove, and a gap for accommodating the pull rope wound around the outer surface of the locking member is provided between the groove wall of the installation groove and the locking member". It solves the technical problem of "

[0003] For existing retractable curtains, such as Roman curtains, etc., the retraction and extension are generally achieved by at least the pull ropes located on both sides of the curtain body. The upper end of the pull rope is tied to the curtain winding shaft and the winding or unwinding of the pull rope is controlled by a retraction and extension device, and the lower end of the pull rope is tied to the bottom of the curtain. By visual inspection, the connection position between the lower end of the pull rope and the curtain is adjusted to adjust the length of the pull rope (the length herein specifically refers to the length that the pull rope can be threaded through the curtain body), so that the lengths of the pull ropes are the same. Otherwise, different lengths will cause the curtain height to be different and result in an unbalanced curtain. Moreover, in actual installation and use, the length of the pull rope needs to be adjusted according to the different weights of the curtain."

[0006] In this comparative document, specifically, when the length of the pull rope 200 needs to be adjusted, the locking member 2 is pulled out from the installation groove 10, the rope winding position is adjusted, and until the desired threading length of the pull rope 200 is reached, the locking member 2 wound with the pull rope 200 is snapped into the installation groove 10. Due to the limitation of the installation groove 10 on the locking member 2 and the pull rope 200, the lower end of the pull rope 200 is fixed, and the pull rope 200 maintains the set length to adjust the optimal length of the lifting rope. However, this structure with the installation groove and the mounting seat is entirely exposed outside the curtain, which is a bit obtrusive visually and has a poor user experience. Summary of the Invention

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

[0008] To solve the above technical problems, the present utility model is achieved through the following technical measures: A leveling device for a curtain, characterized in that: it includes a long movable middle beam, a first cavity part for tightly fitting a protruding part of a screw rod fixing seat is arranged inside the movable middle beam, a second cavity part for assembling a clamping part of the curtain fabric is arranged inside the movable middle beam, and a third cavity part for assembling a positioning part of a middle beam side cover is arranged inside the movable middle beam; the screw rod fixing seat is used to support a threaded screw rod, a slider that moves synchronously with the threaded screw rod is installed on the threaded screw rod, the slider is in clearance fit with the first cavity part, and a pulling rope passing through the curtain fabric is fixed on the slider; the end of the movable middle beam is sleeved with a middle beam side cover.

[0009] Compared with the prior art, the advantages of the present utility model are as follows: By providing a leveling device, when the movable middle beam is not parallel to the lower window edge, the threaded screw rod can be rotated to adjust the height of one side of the movable middle beam, so that the movable 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 hiddenly installed inside the movable middle beam and is not exposed outside the curtain, so the overall aesthetics of the curtain is good.

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

[0011] As an improvement of the present utility model, a "-" shaped card slot is provided at the end of the threaded screw rod, and a snap ring is arranged on the threaded screw rod. The purpose of choosing this design: The "-" shaped card slot is used to assemble an adjusting handle to rotate the threaded screw rod, and the snap ring is used to limit the threaded screw rod.

[0012] As an improvement of the present utility model, a rope fixing hole is provided on the slider. The purpose of choosing this design: The pulling rope is tied to the rope fixing hole of the slider, and when the slider moves, the pulling rope moves synchronously.

[0013] As an improvement of the present utility model, one of the two sides of the movable middle beam is arc-shaped, and the other is also arc-shaped; one of the two sides of the middle beam side cover is arc-shaped, and the other is also arc-shaped. The purpose of choosing this design: To make the movable middle beam and the middle beam side cover symmetrical left and right and both arc-shaped, which is convenient for flexible assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings constituting a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model.

[0015] In the drawings:

[0016] Figure 1 Schematic diagram of the position of the leveling device described in the present utility model in the curtain.

[0017] Figure 2 Schematic diagram of the traditional leveling structure described in the present utility model.

[0018] Figure 3 Three-dimensional view of the leveling device described in the present utility model Figure 1 .

[0019] Figure 4 Three-dimensional view of the leveling device described in the present utility model Figure 2 .

[0020] Figure 5 Exploded view of the leveling device described in the present utility model.

[0021] Figure 6 Cross-sectional view of the leveling device described in the present utility model in the curtain.

[0022] Figure 7 Enlarged view of part A described in the present utility model.

[0023] Figure 8 Installation schematic diagram of the movable middle beam and the screw rod fixing seat described in the present utility model.

[0024] Figure 9 Installation schematic diagram of the movable middle beam and the middle beam side cover described in the present utility model.

[0025] Figure 10 Three-dimensional view of the new curtain with the leveling device described in the present utility model.

[0026] Explanation of reference numerals: 1, movable middle beam; 2, screw rod fixing seat; 3, protruding part; 4, first cavity part; 5, curtain cloth; 6, clamping part; 7, second cavity part; 8, middle beam side cover; 9, positioning part; 10, third cavity part; 11, threaded screw rod; 12, slider; 13, lifting rope; 14, leveling device; 15, screw rod support seat; 16, card slot; 17, snap ring; 18, rope fixing hole; 20, arc; 22, electric reel; 23, movable lower beam; 24, fixed rope buckle; 25, bottom cross bar; 26, adjusting handle; 27, telescopic part; 29, screw rod hole. Detailed implementation manners

[0027] The following describes the preferred embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present utility model, and are not used to limit the present utility model.

[0028] Embodiment 1

[0029] Please refer to Figure 1-10.

[0030] A leveling device 14 for a curtain provided in this embodiment includes a long strip-shaped moving middle beam 1. A first cavity 4 for tightly fitting a protruding portion 3 of a screw rod fixing base 2 is provided inside the moving middle beam 1. A second cavity 7 for assembling a clamping portion 6 of a curtain cloth 5 is provided inside the moving middle beam 1 (this function is equivalent to a moving lower beam 23 in the prior art). A third cavity 10 for assembling a positioning portion 9 of a middle beam side cover 8 is provided inside the moving middle beam 1. The screw rod fixing base 2 is used to support a threaded screw rod 11. A slider 12 that moves synchronously with the threaded screw rod 11 is installed on the threaded screw rod 11. The slider 12 is in clearance fit with the first cavity 4. A pulling rope passing through the curtain cloth 5 is fixed on the slider 12. The end of the moving middle beam 1 is sleeved with a middle beam side cover 8.

[0031] In the embodiment of this utility model application, please refer to Figure 5 . A screw rod support seat 15 is provided on the middle beam side cover 8, and the threaded screw rod 11 passes through the screw rod support seat 15. The screw rod support seat 15 on the middle beam side cover 8 and the screw rod fixing base 2 jointly fix the threaded screw rod 11, enabling the threaded screw rod 11 to rotate freely. A "one"-shaped card slot 16 is provided at the end of the threaded screw rod 11. The "one"-shaped card slot 16 is used to assemble an adjusting handle 26 to rotate the threaded screw rod 11. A snap ring 17 is provided on the threaded screw rod 11, and the snap ring 17 is used to limit the threaded screw rod 11. A rope fixing hole 18 is provided on the slider 12. By binding a lifting rope 13 to the rope fixing hole 18 of the slider 12, when the slider 12 moves, the lifting rope 13 moves synchronously.

[0032] In the embodiment of this utility model application, please refer to Figure 9 . One of the two sides of the moving middle beam 1 is arc-shaped, and the other is also arc-shaped. One of the two sides of the middle beam side cover 8 is arc-shaped, and the other is also arc-shaped. The moving middle beam and the middle beam side cover are symmetric left and right, facilitating flexible assembly. Two third cavities 10 are provided inside the moving middle beam 1. Two protruding positioning portions 9 are provided on the middle beam side cover 8. During installation, the two positioning portions 9 are pressed into the two third cavities 10 for interference fit to achieve fastening.

[0033] In the embodiment of this utility model application, please refer to Figure 8 . A flat first cavity 4 is provided inside the moving middle beam 1. A protruding portion 3 is provided on the screw rod fixing base 2. During installation, the protruding portion 3 is pressed into the first cavity 4 for interference fit to achieve fastening. At the same time, a screw rod hole 29 is provided on the screw rod fixing base 2 for the threaded screw rod 11 to pass through.

[0034] In the embodiment of this utility model application, they are connected as follows. Please refer toFigure 6 With Figure 7 , the curtain cloth 5 is divided into an elastic telescopic part 27 and a rigid clamping part 6 integrally formed with the telescopic part 27. The whole clamping part 6 of the curtain cloth 5 is embedded into the whole second cavity part 7 of the moving middle beam 1 to realize the connection between the two. The screw rod fixing seat 2 is in interference fit with the first cavity part 4 to achieve fastening. The middle beam side cover 8 is in interference fit with the third cavity part 10 to achieve fastening. The slider 12 is in clearance fit with the first cavity part 4, so that the sliding can be changed into the linear movement of the slider 12 driven by the rotation of the threaded screw rod 11, thereby driving the movement of the lifting rope 13 fixed on the slider 12.

[0035] When the window needs sunshading, the user can control the electric reel 22 to rotate. At this time, under the action of the self-gravity of the curtain cloth 5, the lifting rope 13 wound on the electric reel 22 lowers the curtain cloth 5 until it reaches the lower edge surface of the window. In the prior art, for the traditional leveling debugging method, refer to the attached Figure 2 , during factory production, by adjusting the position of the fixed rope buckle 24 to ensure the absolute parallelism between the bottom surface of the curtain cloth 5 (some are the bottom cross bar 25, and some directly press the clamping part 6 of the curtain cloth 5) and the top of the curtain, and then install the moving lower beam 23. One more production process will increase the production cost. Moreover, when installing at the user's site, considering the levelness of the actual installation window sill, it is necessary to remove the moving lower beam 23 and adjust the position of the fixed rope buckle 24 again. Since there is no reference distance scale on the fixed rope buckle 24, only the experience of the worker can be used to adjust the position of the fixed rope buckle 24, and then the parallelism is visually inspected after buckling the moving lower beam 23, so sometimes multiple adjustments are required and the operation is relatively cumbersome.

[0036] A leveling device 14 for a curtain provided in this embodiment can save the process of leveling the bottom surface of the curtain cloth 5 during factory production and directly go to the user's site for debugging. For the specific debugging method, please refer to Figure 1 And Figure 3 , when the bottom surface (moving middle beam 1) of the curtain cloth 5 of the electric curtain is not parallel to the lower edge surface of the window, insert the auxiliary tool adjustment handle 26 into the "one"-shaped card slot 16 of the threaded screw rod 11, rotate the adjustment handle 26, drive the threaded screw rod 11 to rotate, then drive the slider 12 to move, and then drive the lifting rope 13 to move, so as to realize the up and down movement of one end of the moving middle beam 1, and finally realize the parallelism between the moving middle beam 1 and the lower edge surface of the window. The whole process is carried out on the periphery of the curtain, without the need to disassemble any parts such as the moving lower beam 23, the operation is convenient and fast, and the parallelism requirement between the curtain and the window can be visually inspected.

[0037] The beneficial effects of the present utility model are as follows: By providing a leveling device 14, when the moving middle beam 1 is not parallel to the lower window edge during movement, the threaded screw rod 11 can be rotated, thereby adjusting the height of one side of the moving middle beam 1 to make the moving middle beam 1 at the same height as the lower window edge, and the operation is simple and fast. At the same time, please refer to Figure 10 , compared with this new structure and the comparative document (Chinese Patent Publication (Announcement) No.: CN106050109A, Patent Title: Adjusting Device for Curtain Pulling Rope and Retractable Curtain), its leveling device 14 is hiddenly installed inside the moving middle beam 1 and is not exposed outside the curtain, and the overall aesthetic appearance of the curtain is good.

[0038] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 should not be construed as a limitation to the present utility model.

[0039] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected" 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, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0040] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A leveling device for a curtain, characterized in that: It includes a long strip-shaped moving center beam (1). A first cavity part (4) for tightly fitting a protruding part (3) of a lead screw fixing seat (2) is arranged inside the moving center beam (1). A second cavity part (7) for assembling a clamping part (6) of a cord fabric (5) is arranged inside the moving center beam (1). A third cavity part (10) for assembling a positioning part (9) of a center beam side cover (8) is arranged inside the moving center beam (1). The lead screw fixing seat (2) is used to support a threaded lead screw (11). A slider (12) that moves synchronously with the threaded lead screw (11) is installed on the threaded lead screw (11). The slider (12) has a clearance fit with the first cavity part (4). A lifting rope (13) that passes through the cord fabric (5) is fixed on the slider (12). The end of the moving center beam (1) is sleeved with a center beam side cover (8).

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

3. The leveling device for the curtain according to claim 1, characterized in that: A "-"-shaped clamping groove (16) is provided at the end of the threaded lead screw (11). A snap ring (17) is arranged on the threaded lead screw (11).

4. The leveling device for a curtain according to claim 1, wherein: A rope fixing hole (18) is provided on the slider (12).

5. The leveling device for a curtain according to claim 1, characterized in that: For the two sides of the moving center beam (1), one side is arc-shaped (20), and the other side is also arc-shaped (20). For the two sides of the center beam side cover (8), one side is arc-shaped (20), and the other side is also arc-shaped (20).

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