Rope winder for curtain and venetian blind

Abstract

The utility model relates to a rope winder for a curtain and a venetian blind, the rope winder is provided with a columnar rotating body, and the periphery of the rotating body is provided with a rope winding area extending along the axial direction; the rotating body is positioned and installed on the supporting base and can rotate relatively, the supporting base is provided with a rope arranging part, the rope arranging part is used for guiding a rope to be wound on a rope winding area of the rotating body and sequentially and spirally arranged in the axial direction of the rotating body, multi-overlapping winding is prevented, the rope is prevented from being wound and knotted, and therefore smooth rope unwinding next time is facilitated; the shutter curtain adopts the rope winder, the lifting rope winding and unwinding work is facilitated, the lifting work of the curtain is more stable, and the use experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of curtains, in particular to blinds. Background Art

[0002] Venetian blinds can be used to cover window and door openings to block light and maintain privacy. Blade-type Venetian blinds are composed of a number of blades or leaf plates, and many blades are connected in series through ropes. The stability of the curtain body of the Venetian blind is related to the performance of the Venetian blind. The curtain body of the traditional Venetian blind is raised and retracted by winding ropes, while the winding ropes of the existing Venetian blinds are all wound on the same part of the winding shaft. The ropes are easily entangled and knotted after multiple overlapping windings, so that when the curtain body is lowered again, the ropes are not released smoothly or even stuck, causing the curtain body to shake when it descends, or even to descend with one end higher than the other, which greatly affects the use of the Venetian blind. Summary of the invention

[0003] The utility model aims to overcome the defects of the prior art and provide a cord winder for curtains and blinds, which can quickly, easily and stably retract and release the hanging cord.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a rope winder for curtains, which has a columnar rotating body, and a rope winding area extending axially is provided on the outer periphery of the rotating body; the rotating body is positioned and installed on a supporting base and can rotate relatively, and a rope arranging part is provided on the supporting base, and the rope arranging part is used to guide the rope to be wound on the rope winding area of ​​the rotating body and arranged spirally in sequence along the axial direction of the rotating body.

[0005] The above scheme is further that the supporting base has a bottom plate, on which a rope threading hole is provided, and the rope threading hole passes through the upper and lower side surfaces of the bottom plate; the rotating body is installed on the upper side of the bottom plate, and the rope arranging part is a U-shaped platform that bulges upward from the upper side surface of the bottom plate, and the U-shaped mouth of the rope arranging part supports or is close to the rotating body; the rope arranging part has a first end face and a second end face that are back to back to each other in the axial direction of the rotating body, and the first end face faces the rope winding area of ​​the rotating body, and the rope winding process is arranged spirally in sequence along the axial direction of the rotating body through the abutment and pushing of the first end face.

[0006] The above scheme is further that the support base is a U-shaped seat, having side walls protruding upward from both sides of the bottom plate, and positioning ribs are provided on the inner sides of the side walls; the rotating body is a sleeve with a socket hole, and a positioning ring groove is provided on the outer periphery of one end of the rotating body, and the positioning ribs are engaged with the positioning ring groove to establish that the rotating body is positioned and installed on the support base and can rotate relatively; the socket hole of the rotating body is used to connect the drive shaft.

[0007] The above scheme is further that, a hanging belt area is also provided on the outer periphery of the rotating body, and a supporting ring platform and a hanging belt member are arranged on the hanging belt area, the supporting ring platform is a protruding structure on the outer periphery of the rotating body, and the height of the protrusion of the supporting ring platform is greater than the diameter of the rope wound up on the rope winding area; the hanging belt member is installed on the rotating body and can rotate relatively, and the hanging belt member is used to hang the ladder belt or cloth belt of the curtain; the upper end of the ladder belt or cloth belt passes through the preset belt threading part of the support base from bottom to top and is connected to the hanging belt member.

[0008] The above solution is further that the belt threading portion is constructed as a through hole on the bottom plate, and the belt threading portion is located on the outside of the rope arrangement portion.

[0009] The above solution is further characterized in that the first end surface and the center of the rope threading hole are on the same plane.

[0010] In order to achieve the above-mentioned purpose, the utility model provides a venetian blind curtain, comprising an upper rail, a curtain body, and a control head. The curtain body is composed of a plurality of blades arranged up and down and connected in series through a suspension rope, and also includes the above-mentioned rope reel, which is installed on the upper rail and associated with the control head. The reel retracts and releases the suspension rope of the curtain body to establish a retracted state and a hanging state of the curtain body; the control head is assembled on the upper rail and is provided with an output end and a driving end. The output end is connected to a driving shaft through a universal joint, and the driving shaft is connected to a rotating body of the rope reel, so that the driving shaft drives the rotating body to reverse in the forward and reverse directions.

[0011] The above scheme is further that the driving shaft is a hollow polygonal tube, and the corresponding end of the driving shaft is connected to the universal joint through an adapter; the sleeve hole through which the rotating body passes is sleeved on the driving shaft.

[0012] The rope reel of the utility model guides the rope to be reeled in the rope reeling area of ​​the rotating body through the rope arrangement part and arranges the rope in spiral order along the axial direction of the rotating body, thereby preventing multiple overlapping reels and avoiding the rope from being entangled and knotted, which helps to release the rope smoothly next time and is used on curtains to improve the stability of the curtains.

[0013] The blind curtain of the utility model adopts the above-mentioned rope reel, which is conducive to the work of retracting and releasing the hanging rope, and the control head and the rope reel are separated by the universal joint, and the transmission can be ensured, thereby obtaining the following beneficial effects:

[0014] 1. When the rope is being retracted and released, the universal joint has the characteristic of adaptively adjusting the angle, which can relatively alleviate the force transmitted from the rope reel to the brake head, reduce the mutual interference between components, make retraction and release easier, and make the curtain raising and lowering work smoother, thus improving the user experience.

[0015] 2. The drive shaft is a hollow polygonal tube. Under the condition of the same weight, the outer dimensions of the drive shaft and the rope reel can be relatively large. As a result, the outer diameter of the rope reel area is larger, which increases the speed of reeling and releasing the line. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] AttachedFigure 1 This is a schematic structural diagram of a preferred embodiment of the rope reel of the utility model;

[0017] Attached Figure 2 for Figure 1 A schematic diagram of the structural decomposition of an embodiment;

[0018] Attached Figure 3 for Figure 1 A schematic diagram of the support base structure of an embodiment;

[0019] Attached Figure 4 for Figure 1 Installation and connection diagram of the embodiment;

[0020] Attached Figure 5 This is a schematic structural diagram of a preferred embodiment of the venetian blind of the utility model;

[0021] Attached Figure 6 for Figure 5 Schematic diagram of the connection between the drive shaft and the adapter in the embodiment. DETAILED DESCRIPTION

[0022] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention.

[0023] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element 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. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] See also Figure 1 , 2As shown in Figures 3 and 4, the utility model provides a rope winder for curtains, which has a columnar rotating body 1. The outer periphery of the rotating body 1 is provided with a rope winding area 11 extending in the axial direction. The preferred rope winding area 11 is a smooth surface on the outer periphery of the rotating body 1, extending from the middle section of the rotating body 1 to one end of the rotating body 1, and a fixing portion 111 is provided on the rope winding area 11, and the fixing portion 111 is used to be fixedly connected with one end of the rope for easy assembly. The rotating body 1 is positioned and mounted on the support base 2 and can rotate relatively, so that the rope can be retracted and released by rotating the rotating body 1. The support base 2 is provided with a rope arrangement portion 21, and the rope arrangement portion 21 is used to guide the rope to be reeled in the rope winding area 11 of the rotating body 1 and arranged in a spiral manner in sequence along the axial direction of the rotating body 1, so as to prevent multiple overlapping reels and avoid the rope from being entangled and knotted, which helps to release the rope smoothly next time. When used on curtains, the stability of the curtain is improved.

[0025] Figure 1 , 2 As shown in Figures 3 and 4, in this embodiment, the support base 2 is a U-shaped seat with a stable structural center of gravity, which is conducive to supporting the rotation of the rotating body 1. The support base 2 has a bottom plate 22 and side walls 24 protruding upward from both sides of the bottom plate 22. It is an integrated structure with good structural performance. A rope threading hole 23 is provided on the bottom plate 22, and the rope threading hole 23 passes through the upper and lower sides of the bottom plate so that the rope can be threaded and installed. It is preferred that the hole diameter of the rope threading hole 23 is slightly larger than the rope diameter to meet the needs of threading the rope, and can well control the rope to prevent the rope from moving. The rotating body 1 is installed on the upper side of the bottom plate 22, and the rope arrangement part 21 is a U-shaped platform that protrudes upward from the upper side of the bottom plate, and the U-shaped mouth of the rope arrangement part 21 receives or is close to the rotating body 1. In the figure, the rope arrangement part 21 is a symmetrical sheep horn shape, and the rope threading hole 23 is located on the symmetry line of the rope arrangement part 21. The rope arrangement part 21 has a first end face 211 and a second end face 212 facing each other in the axial direction of the rotating body 1. The first end face 211 faces the rope winding area 11 of the rotating body 1. Through the abutment and pushing of the first end face 211, the rope winding process is arranged in spirals in sequence along the axial direction of the rotating body 1. Furthermore, the first end face 211 and the center of the rope threading hole 23 are on the same plane. When the rope passes through the rope threading hole 23 and is wound around the rotating body 1, it passes through the first end face 211 of the rope arrangement part 21. By utilizing the positional relationship between the first end face 211 and the rope threading hole 23, the first end face 211 guides the rope and abuts and pushes the rope, so that the rope winding process is arranged in spirals in sequence along the axial direction of the rotating body 1, and the arrangement is neat, so as to prevent the rope from overlapping in the same position and entanglement and knotting of the rope, which is helpful for the smoothness of the next rope release.

[0026] In this embodiment, the rotating body 1 is a sleeve with a sleeve hole 12, a positioning ring groove 13 is provided on the outer periphery of one end of the rotating body 1, and a positioning rib 241 is provided on the inner side of the side wall 24 of the supporting base 2; the positioning ring groove 13 is engaged with the positioning rib 241 to establish that the rotating body 1 is positioned and installed on the supporting base 2 and can rotate relatively, the structure is simple, easy to install, and effectively limits the axial position of the rotating body 1. When assembled and used, the sleeve hole 12 of the rotating body 1 is used to connect the drive shaft, and the drive shaft input power drives the rotating body 1 to rotate forward and reverse, so as to achieve the action of collecting and releasing the rope, and with the help of the rope arrangement part 21, the smoothness and stability of the rope reel are improved.

[0027] Figure 4 As shown, a hanging belt area is also provided on the outer periphery of the rotating body 1, and the hanging belt area is adjacent to the rope winding area 11 in the axial direction of the rotating body 1, and a support ring platform 14 and a hanging belt member 15 are arranged on the hanging belt area, and the support ring platform 14 is a protruding structure on the outer periphery of the rotating body 1, and the protruding height of the support ring platform 14 is greater than the diameter of the rope wound on the rope winding area 11. In this embodiment, after the rotating body 1 is installed, the side edge of the support ring platform 14 just abuts against the second end face 212 of the rope arrangement part 21, forming the function of supporting the rope arrangement part 21, increasing the structural property of the rope arrangement part 21, and ensuring that the first end face 211 guides the rope and pushes against the rope, so that the rope winding process is arranged spirally in sequence along the axial direction of the rotating body 1. The hanging belt member 15 is installed on the rotating body 1 and can rotate relatively. The hanging belt member 15 is used to hang the ladder belt or cloth belt of the curtain. The preferred hanging belt member 15 in the figure is a ring hoop with a simple structure. The upper end of the ladder belt or cloth belt passes through the preset belt threading part 25 of the support base 2 from bottom to top and is connected to the hanging belt member 15, so as to realize the upper end positioning of the ladder belt or cloth belt and meet the needs of adjusting the angle of the curtain body by pulling the ladder belt or cloth belt. Further, the belt threading part 25 is constructed in the through hole on the bottom plate 22, and the belt threading part 25 is located on the outside of the rope arrangement part 21. This structure is convenient for the installation of the ladder belt or cloth belt and is effective for avoiding the rope. The upper end of the ladder belt or cloth belt is also supported and lifted by the support ring 14 to prevent the ladder belt or cloth belt from pressing the rope wound on the rope winding area 11, reduce interference, and improve the smoothness and stability of the rope winding device.

[0028] Figure 5 , 6As shown, the utility model provides a blind curtain, including an upper rail 3, a curtain body 4, and a control head 5. The curtain body 4 is composed of a plurality of blades 41 arranged up and down and connected in series through a hanging rope 42, and also includes the above-mentioned rope reel, which is installed on the upper rail 3 and associated with the control head 5, specifically fixed on the upper rail 3 through a support base 2, and a rotating body 1 is positioned on the support base 2 and associated with the control head 5. The hanging rope 42 passes through the upper rail 3 and the support base 2 from bottom to top and is then fixed on the rotating body 1, so that the curtain body 4 can be retracted and released by the rope reel to establish a retracted state and a hanging state, so as to open or close the curtain. Further, a ladder belt or cloth belt 43 is provided on the curtain body 4, and the upper end of the ladder belt or cloth belt 43 passes through the upper rail 3 and the belt threading part 25 of the support base 2 from bottom to top and is then connected to the hanging belt member 15, and the blades 41 are supported, positioned, and adjusted in angle by the ladder belt or cloth belt 43 for dimming use. Figure 4 As shown, the hanging belt 15 is an annular hoop, and the upper end of the ladder belt or cloth belt 43 is hung by the hook on it. The structure is simple and easy to install and disassemble. The ladder belt or cloth belt 43 is an H-shaped belt body, which consists of two vertical sides and multiple layers of horizontal sides. The horizontal sides are used to support the lower side of the blade 41 and cooperate with the offset pulling of the two vertical sides to adjust the angle of the blade. The specific structural principle of the ladder belt or cloth belt 43 is the existing technology. When the curtain body rises and is retracted, the ladder belt or cloth belt 43 only follows the curtain body to stack and gather from bottom to top, but it is not rolled up. Therefore, the hanging belt 15 can rotate relative to the rotating body 1, which does not interfere with the winding rope, and the angle of the blade can be adjusted.

[0029] In this embodiment, the upper rail 3 is a U-shaped groove rail, which is convenient for installation on the corresponding wall or window frame and provides a corresponding U-shaped installation space. The support base 2 is fixed in the U-shaped installation space of the upper rail 3 by means of buckles and / or screws; the control head 5 is also assembled on the upper rail 3 and is provided with an output end 51 and a driving end 52. The driving end 52 can be connected to electric parts such as motors to realize electric lifting of curtains, and is also connected to manual parts 8, such as ropes, beads, etc., so that users can manually operate to retract and release curtains. The control head 5 of this embodiment is purchased on the market and belongs to the prior art. Its working principle is not repeated here. The output end 51 of the control head 5 is connected to the drive shaft 7 through the universal joint 6, and the drive shaft 7 is connected to the rotating body 1 of the rope reel, so that the drive shaft 7 drives the rotating body 1 to rotate forward and reverse. The control head and the rope reel are separated by the universal joint 6. While ensuring transmission, the universal joint has the characteristic of self-adaptive adjustment of angles, avoiding the defects of hard shaft transmission, reducing mutual interference between components, and relatively alleviating the force transmission of the rope reel to the control head, making it easy to retract and release, and increasing the use experience.

[0030] Figure 5 , 6As shown, in this embodiment, the drive shaft 7 is a hollow polygonal tube, such as a quadrilateral, hexagon or octagon, and the corresponding end of the drive shaft 7 is connected to the universal joint 6 through an adapter 71; one end of the adapter 71 is embedded in the hollow interior of the drive shaft 7, and the other end is axially connected to the universal joint 6. The adapter 71 of the embodiment in the figure is axially inserted into the preset socket of the universal joint 6, and then locked by the radially locked screw support. The structure is simple and easy to disassemble and assemble. As shown in the figure, the drive shaft 7 extends along the axial direction of the upper rail 3, and two or more rope winders are connected in series on the drive shaft 7 to realize the synchronous retraction and release of multiple ropes, so as to meet the requirement of the curtain body to rise or fall smoothly. The rotating body 1 of the rope winder is sleeved on the driving shaft 7 through the sleeve hole 12. The shape and size of the sleeve hole 12 match the outer contour of the driving shaft 7. The inner and outer corners of polygons such as quadrilaterals, hexagons or octagons are mutually engaged to make the connection between the rotating body 1 and the driving shaft 7 more stable and have good transmission performance. It can buffer the rolling of the curtain and improve the sense of balance of the rope movement. The present embodiment can further add a keyway connection between the driving shaft 7 and the sleeve hole 12. For example, raised ribs can be added to the surface of the driving shaft 7, and corresponding keyways can be added to the inner wall of the sleeve hole 12. The sleeves are matched to increase the transmission force, avoid the curtain from slipping due to large rotation force, and improve the performance. The above structural design is not only convenient for manufacturing and assembly, but also conducive to transmission. Under the same weight, the outer dimensions of the driving shaft 7 and the rotating body 1 can be relatively large, so that the outer diameter of the rope winding area of ​​the rope winder is larger, and the corresponding rope winding arc is longer under the same turning angle, thereby improving the speed of retracting and releasing the rope, and can be retracted with a smaller pulling force. It can be suitable for blades of various weights, has a wider range of applicability, and improves the usability of the curtains.

[0031] Of course, the above detailed description of the utility model in combination with the implementation method is only for illustrating the technical concept and features of the utility model, and its purpose is to allow people familiar with this technology to understand the content of the utility model and implement it. Therefore, all equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A cord winder for curtains, characterized in that: A columnar rotating body (1) is provided with a rope winding area (11) extending in the axial direction on the outer periphery of the rotating body (1); the rotating body (1) is positioned and mounted on a supporting base (2) and can rotate relatively thereto; the supporting base (2) is provided with a rope arranging portion (21), the rope arranging portion (21) is used to guide the rope to be wound on the rope winding area (11) of the rotating body (1) and to be arranged in a spiral manner in sequence along the axial direction of the rotating body (1); the supporting base (2) has a bottom plate (22), the bottom plate (22) is provided with a rope threading hole (23), the rope threading hole (23) passes through the upper portion of the bottom plate The rotating body (1) is mounted on the upper side of the bottom plate (22); the rope arrangement portion (21) is a U-shaped platform protruding upward from the upper side of the bottom plate, and the U-shaped opening of the rope arrangement portion (21) receives or is close to the rotating body (1); the rope arrangement portion (21) has a first end face (211) and a second end face (212) facing each other in the axial direction of the rotating body (1); the first end face (211) faces the rope winding area (11) of the rotating body (1), and the rope winding process is arranged in a spiral in sequence along the axial direction of the rotating body (1) through the abutment and pushing of the first end face (211).

2. The cord winder for curtains according to claim 1, characterized in that: The support base (2) is a U-shaped base having side walls (24) protruding upward from both sides of the bottom plate (22), and positioning ribs (241) are provided on the inner sides of the side walls (24); the rotating body (1) is a sleeve with a sleeve hole (12), and a positioning ring groove (13) is provided on the outer periphery of one end of the rotating body (1), and the positioning ribs (241) are engaged with the positioning ring groove (13) to establish that the rotating body (1) is positioned and mounted on the support base (2) and can rotate relatively; the sleeve hole (12) of the rotating body (1) is used to connect a drive shaft.

3. The cord winder for curtains according to claim 2, characterized in that: The outer periphery of the rotating body (1) is also provided with a hanging belt area, on which a support ring platform (14) and a hanging belt member (15) are arranged. The support ring platform (14) is a protruding structure on the outer periphery of the rotating body (1), and the height of the protrusion of the support ring platform (14) is greater than the diameter of the rope wound on the rope winding area (11); the hanging belt member (15) is installed on the rotating body (1) and can rotate relatively, and the hanging belt member (15) is used to hang the ladder belt or cloth belt of the curtain; the upper end of the ladder belt or cloth belt passes from the bottom to the top through the preset belt threading part (25) of the support base (2) and is connected to the hanging belt member (15).

4. The cord reel for curtains according to claim 3, characterized in that: The belt threading portion (25) is constructed as a through hole on the bottom plate (22), and the belt threading portion (25) is located outside the rope arrangement portion (21).

5. The cord reel for curtains according to claim 1, characterized in that: The first end surface (211) and the center of the rope threading hole (23) are on the same plane.

6. A venetian blind curtain comprising an upper rail (3), a curtain body (4), and a control head (5), wherein the curtain body (4) is composed of a plurality of blades (41) arranged up and down and connected in series via a hanging rope (42), characterized in that: It also includes a rope reel as described in any one of claims 1 to 5 above, which is installed on the upper rail (3) and is associated with the control head (5), and the retracted state and the hanging state of the curtain body (4) are established by the rope reel to retract and release the suspension rope (42) of the curtain body (4); the control head (5) is assembled on the upper rail (3) and is provided with an output end (51) and a driving end (52), the output end (51) is connected to the driving shaft (7) through a universal joint (6), and the driving shaft (7) is connected to the rotating body (1) of the rope reel, so that the driving shaft (7) drives the rotating body (1) to rotate forward and reverse.

7. The Venetian blind according to claim 6, characterized in that: The drive shaft (7) is a hollow polygonal tube, and the corresponding end of the drive shaft (7) is connected to the universal joint (6) via an adapter (71); the rotating body (1) is sleeved on the drive shaft (7) through the sleeve hole (12).

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