Double positioning structure for snake-shaped curtain

Abstract

The utility model relates to a window curtain structure technical field especially relates to a double positioning structure for serpentine window curtain, including first pulley and second pulley, one end of first pulley is hinged with one end of second pulley, the other end of second pulley is provided with the positioning lug for fixed positioning piece, the height of positioning lug is less than or equal to the height of second pulley, the bottom surface of positioning lug is provided with cylindrical recess, spherical recess is provided with in the cylindrical recess close to the position of cylindrical recess top end, the one end of positioning lug away from first pulley is provided with the wire slot for the fixed distance rope passes through, the wire slot is communicated with cylindrical recess and spherical recess respectively, the utility model provides a fixed distance structure, through setting up cylindrical recess on the bottom surface of positioning lug, spherical recess is provided with in the cylindrical recess close to the position of cylindrical recess top end can adapt two kinds of positioning piece of ball and cylinder when using.

Description

Technical Field

[0001] This utility model relates to the field of curtain structure technology, and in particular to a double positioning structure for a serpentine curtain. Background Technology

[0002] Snake-shaped blinds are a common type of bed curtain. Currently, the positioning of snake-shaped blinds is mainly achieved through rollers. When using rollers, fixed-distance ropes need to be installed. The fixed-distance ropes are fixed to the rollers by positioning devices. There are currently two types of positioning devices: one is a bead fixed to the fixed-distance rope, and the other is a cylinder fixed to the fixed-distance rope. The diameter of the cylinder is larger than that of the bead. The two types of positioning devices are suitable for different rollers. However, in actual production, due to supply and demand, the supply of the fixed-distance rope with positioning device is sometimes insufficient, which affects the production schedule. How to solve this problem has been a subject of ongoing research. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a paper-wrapped wire winding reel to solve the aforementioned technical problems.

[0004] The technical solution of this utility model is as follows: A double-positioning structure for a serpentine curtain includes a first roller and a second roller. One end of the first roller is hinged to one end of the second roller. The other end of the second roller is provided with a positioning protrusion for fixing a positioning element. The height of the positioning protrusion is less than or equal to the height of the second roller. The bottom surface of the positioning protrusion is provided with a cylindrical groove, and a spherical groove is provided inside the cylindrical groove near the top of the cylindrical groove. The end of the positioning protrusion away from the first roller is provided with a thread guide groove for a fixed-distance rope to pass through. The thread guide groove is connected to the cylindrical groove and the spherical groove respectively.

[0005] Preferably, the bottom end of the wire groove is flush with the bottom end of the positioning protrusion.

[0006] Preferably, the portion of the wire groove that communicates with the spherical groove extends through the spherical groove.

[0007] Preferably, the cylindrical groove includes a first cylindrical groove and a second cylindrical groove, wherein the first cylindrical groove is located below the second cylindrical groove; the diameter of the first cylindrical groove is larger than the diameter of the second cylindrical groove.

[0008] Preferably, a magnet is installed at the other end of the first hanging wheel.

[0009] Preferably, the magnet is a bar magnet.

[0010] Preferably, the other end of the first hanging wheel is provided with a longitudinally arranged strip-shaped hole, and a blocking plate is provided on one side of the first hanging wheel located in the strip-shaped hole. The strip magnet is stuck in the strip-shaped hole and abuts against the blocking plate.

[0011] The distance-fixing structure provided by this utility model features a positioning protrusion on the second hanging wheel, with a cylindrical groove on the bottom surface of the protrusion. A spherical groove is located near the top of the cylindrical groove. This design accommodates both beaded and cylindrical positioning elements: when using a bead, the bead is placed in the cylindrical groove corresponding to the spherical groove, and a chopstick or other strip-shaped tool is used to push the bead into the spherical groove, allowing the distance-fixing rope to pass through the groove and expose the positioning protrusion; when using a cylinder, the bead is placed in the cylindrical groove, and a tool is used to push the cylinder into the groove, allowing the distance-fixing rope to pass through the groove and expose the positioning protrusion. Attached Figure Description

[0012] Figure 1 A schematic diagram of the overall structure of a double positioning structure for a serpentine curtain is shown in the embodiment. Figure 2 A schematic diagram of the internal structure of the positioning protrusion in the embodiment is shown; Figure 3 A bottom view of the positioning bump in the embodiment is shown; Figure 4 A schematic diagram of the engagement state of the double positioning structure for the serpentine curtain in the embodiment is shown; In the diagram: First hanging wheel 10, second hanging wheel 11; Positioning protrusion 11-1, cylindrical groove 11-2, spherical groove 11-3, wire guide groove 11-4, magnet 11-5, blocking plate 11-6; First cylindrical groove 11-21, second cylindrical groove 11-22. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0014] Example, refer to Figures 1-3This embodiment is a double-positioning structure for a serpentine curtain, including a first roller 10 and a second roller 11. One end of the first roller is hinged to one end of the second roller. The other end of the second roller is provided with a positioning protrusion 11-1 for fixing a positioning component. The height of the positioning protrusion is less than or equal to the height of the second roller. The bottom surface of the positioning protrusion is provided with a cylindrical groove 11-2. A spherical groove 11-3 is provided inside the cylindrical groove near the top of the cylindrical groove. The end of the positioning protrusion away from the first roller is provided with a thread guide groove 11-4 for a fixed-distance rope to pass through. The thread guide groove communicates with both the cylindrical groove and the spherical groove. In this embodiment, it is preferable that the bottom end of the thread guide groove is flush with the bottom end of the positioning protrusion, so that the fixed-distance rope passes directly through the bottom end of the thread guide groove, making installation more convenient. In actual manufacturing, the part of the thread guide groove that communicates with the spherical groove preferably extends through the spherical groove.

[0015] The aforementioned serpentine curtains with a double-positioning structure have at least the following advantages: 1. By setting a positioning protrusion on the second hanging wheel, and setting a cylindrical groove on the bottom surface of the positioning protrusion, a spherical groove is set near the top of the cylindrical groove. It can accommodate both ball and cylinder positioning elements: When using a ball as a positioning element, place the ball in the cylindrical groove corresponding to the spherical groove, and use a chopstick or other strip tool to squeeze the ball into the spherical groove. A fixed-distance rope passes through the wire groove to expose the positioning protrusion; When using a cylinder as a positioning element, place the ball in the cylindrical groove, and use a tool to squeeze the cylinder into the cylindrical groove. A fixed-distance rope passes through the wire groove to expose the positioning protrusion. 2. By providing a guide groove 11-4 for the rope to pass through at a fixed distance at one end of the positioning protrusion away from the first sheave, the guide groove is connected to the cylindrical groove and the spherical groove respectively. The part of the guide groove connected to the spherical groove passes through the spherical groove. This makes the guide groove separate the spherical groove into two parts, which facilitates the deformation of the spherical groove during the process of the ball being squeezed into the spherical groove, thus facilitating the ball to enter the spherical groove. In addition, when the ball is squeezed into the cylindrical groove, both parts of the spherical groove and both sides of the guide groove are easily deformed. 3. By hinged the first and second rollers, the rollers can change angles as the curtains are closed and opened after the curtains are installed.

[0016] As one implementation: the cylindrical groove includes a first cylindrical groove 11-21 and a second cylindrical groove 11-22, the first cylindrical groove being located below the second cylindrical groove; the diameter of the first cylindrical groove is larger than the diameter of the second cylindrical groove. When installing the cylinder, the cylinder can first be positioned in the first cylindrical groove, and then the cylinder can be pushed into the second groove by tapping or pressing. Of course, the cylinder can also be T-shaped.

[0017] In one implementation: a magnet 11-5 is installed at the other end of the first hanging wheel. The magnet is a bar magnet. During manufacturing, a strip-shaped hole is longitudinally provided at the other end of the first hanging wheel. A blocking plate 11-6 is provided on one side of the first hanging wheel near the strip-shaped hole. The bar magnet is secured within the strip-shaped hole and rests against the blocking plate. This structure, by making the magnet strip-shaped, securing it with a strip-shaped hole, and providing a blocking plate on one side of the strip-shaped hole, ensures the magnet is fixed while increasing the mutual attraction between the magnet and the adjacent double-positioning structure. The usage status of this positioning structure and the adjacent positioning structure can be seen in [reference needed]. Figure 4 . The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A double-positioning structure for a serpentine curtain, comprising a first roller (10) and a second roller (11), wherein one end of the first roller is hinged to one end of the second roller, characterized in that: The other end of the second roller is provided with a positioning protrusion (11-1) for fixing the positioning component, and the height of the positioning protrusion is less than or equal to the height of the second roller. The bottom surface of the positioning protrusion is provided with a cylindrical groove (11-2), and a spherical groove (11-3) is provided inside the cylindrical groove near the top of the cylindrical groove. The end of the positioning protrusion away from the first sheave is provided with a wire guide groove (11-4) for a rope to pass through at a fixed distance. The wire guide groove is connected to the cylindrical groove and the spherical groove respectively.

2. The dual positioning structure as described in claim 1, characterized in that: The bottom end of the wire groove is flush with the bottom end of the positioning protrusion.

3. The dual positioning structure as described in claim 1 or 2, characterized in that: The portion of the wire groove that connects with the spherical groove extends through the spherical groove.

4. The dual positioning structure as described in claim 1, characterized in that: The cylindrical groove includes a first cylindrical groove (11-21) and a second cylindrical groove (11-22), with the first cylindrical groove located below the second cylindrical groove; The diameter of the first cylindrical groove is larger than the diameter of the second cylindrical groove.

5. The dual positioning structure as described in claim 1, characterized in that: A magnet (11-5) is installed at the other end of the first roller.

6. The dual positioning structure as described in claim 5, characterized in that: The magnet is a bar magnet.

7. The dual positioning structure as described in claim 6, characterized in that: The other end of the first hanging wheel is provided with a strip-shaped hole in the longitudinal direction. A blocking plate (11-6) is provided on one side of the first hanging wheel located in the strip-shaped hole. The strip magnet is stuck in the strip-shaped hole and abuts against the blocking plate.

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