Winding device for curtain

Abstract

The utility model discloses a curtain rolling device which comprises a base, a reel and a limiting device, the reel and the limiting device are both arranged in the base, the reel and the limiting device are arranged side by side, and the reel is in transmission connection with the limiting device. The limiting device at least has one state, and in the state, the limiting device prevents the reel from rotating. The rolling shaft and the limiting device are arranged in parallel, so that the requirement on the width of the curtain is reduced, and the device can be suitable for curtains with narrow widths.

Description

Technical Field

[0001] The utility model relates to a winding device for curtains. Background Art

[0002] The electric honeycomb curtain rope winder only has functions of taking in and paying out ropes. The up and down travel of the curtain completely depends on the electronic limit of the motor. When the electronic limit fails, the motor will not stop when working in one direction, and the pulling rope is easily broken, resulting in damage to the product and it can no longer be used. The existing structure can limit the height position of the curtain by a mechanical limit device without setting an electronic limit. However, the traditional limit device is installed at the end of the rope winder, resulting in limited dimensions in the width direction of the curtain, and it is only suitable for curtains with relatively large widths. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a winding device for curtains to solve the technical problems mentioned in the above background art.

[0004] The technical solution for achieving the purpose of the utility model is: a winding device for curtains, including a base, a reel and a limit device. The reel and the limit device are both arranged in the base. The reel and the limit device are arranged side by side, and the reel is in transmission connection with the limit device. The limit device has at least one state, in which the limit device prevents the reel from rotating.

[0005] Further, the limit device includes a lead screw and a sliding block. The sliding block is in threaded connection with the lead screw. The lead screw is rotatably arranged in the base, and the sliding block is slidably connected with the base. When the lead screw rotates, it drives the sliding block to slide along the length direction of the base.

[0006] Further, an anti-rotation boss is arranged on the base, and a groove matching the anti-rotation boss is arranged on the sliding block.

[0007] Further, a driving gear is arranged at one end of the reel, and a driven gear is arranged at one end of the lead screw. The driving gear is meshed with the driven gear.

[0008] Further, an anti-rotation convex block is arranged at one end of the driving gear facing the sliding block. When the limit device is in the limit state, the anti-rotation convex block abuts against the sliding block.

[0009] Further, a gland is arranged on the base, and the distance between the gland and the reel matches the diameter of the pulling rope.

[0010] Further, a threading hole for the pulling rope to pass through is arranged at the bottom of the base.

[0011] By adopting the above technical solution, the utility model has the following beneficial effects:

[0012] (1) The reel and the limiting device of the present utility model are arranged in parallel, reducing the width requirement of the curtain and making it applicable to some curtains with a relatively narrow width.

[0013] (2) In the present utility model, the reel drives the lead screw to rotate, and the rotation of the lead screw drives the sliding block to slide along the length direction of the base. When the sliding block abuts against the driving gear and the limiting device is in the limit state, the driving gear is blocked by the sliding block, restricting the rotation of the lead screw and thus restricting the rotation of the reel.

[0014] (3) A gland is provided on the base of the present utility model. When the pull rope is wound onto the reel, it is controlled and guided by the gland and arranged in the axial order without any messy wires. Description of the Drawings

[0015] In order to make the content of the present utility model easier to be clearly understood, the following further details the present utility model according to specific embodiments in conjunction with the drawings, where

[0016] Figure 1 is a schematic structural view of the present utility model.

[0017] Figure 2 is a schematic structural view of the present utility model without the limiting device.

[0018] The reference numerals in the drawings are: base 1, anti-rotation boss 1-1, reel 2, limiting device 3, lead screw 3-1, sliding block 3-2, driving gear 4, driven gear 5, gland 6. Detailed Embodiments

[0019] In order to better understand the above technical solutions, the following will detail the above technical solutions in conjunction with the drawings of the specification and specific embodiments.

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. Generally, the components of the embodiments of the present utility model described and illustrated herein can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0022] It should be noted that like reference numerals and letters denote like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of the embodiments of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship in which the utility model product is customarily placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It 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.

[0024] In the description of the embodiments of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected to" 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 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. The present utility model will be further described below with reference to the figures. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model and cannot be used to limit the protection scope of the present utility model.

[0025] (Embodiment 1)

[0026] See Figure 1-2 , the winding device of the curtain in this embodiment includes a base 1, a reel 2 and a limiting device 3. The reel 2 and the limiting device 3 are both arranged in the base 1. The reel 2 and the limiting device 3 are arranged in parallel, and the reel 2 is in transmission connection with the limiting device 3; the limiting device 3 has at least one state, in which the limiting device 3 prevents the reel 2 from rotating. In this embodiment, the reel 2 and the limiting device 3 are arranged in parallel, reducing the width requirement of the curtain and making it applicable to some curtains with a relatively narrow width.

[0027] Specifically, the limiting device 3 includes a lead screw 3-1 and a sliding block 3-2. The sliding block 3-2 is in threaded connection with the lead screw 3-1. The lead screw 3-1 is rotatably arranged in the base 1, and the sliding block 3-2 is slidably connected to the base 1; when the lead screw 3-1 rotates, it drives the sliding block 3-2 to slide along the length direction of the base 1. During initial installation, the position of the sliding block 3-2 relative to the lead screw 3-1 is adjusted according to the height of the curtain.

[0028] One end of the scroll 2 is provided with a driving gear 4, one end of the lead screw 3-1 is provided with a driven gear 5, and the driving gear 4 meshes with the driven gear 5. The scroll 2 drives the lead screw 3-1 to rotate, and the rotation of the lead screw 3-1 drives the sliding block 3-2 to slide along the length direction of the base 1. When the sliding block 3-2 abuts against the driven gear 5, the limiting device 3 is in an extreme state, restricting the rotation of the lead screw 3-1 and thus restricting the rotation of the scroll 2.

[0029] The base 1 is provided with an anti-rotation boss 1-1, and the sliding block 3-2 is provided with a groove matching the anti-rotation boss 1-1 to prevent the sliding block 3-2 from rotating during sliding.

[0030] One end of the driving gear 4 facing the sliding block 3-2 is provided with an anti-rotation protrusion. When the limiting device 3 is in an extreme state, the anti-rotation protrusion abuts against the sliding block 3-2, and the driving gear 4 is stuck and cannot rotate, thereby restricting the rotation of the winding tube 2. Of course, an anti-rotation protrusion can also be provided on the driven gear 5, which can also restrict the rotation of the winding tube 2. However, after the equipment has been running for a long time, the teeth between the driving gear 4 and the driven gear 5 may slip. Therefore, it is preferred to provide the anti-rotation protrusion on the driving gear 4.

[0031] The base 1 is provided with a gland 6. The gland 6 is integrally arc-shaped and matches the scroll 2. The distance between the gland 6 and the scroll 2 matches the diameter of the pull rope. When the pull rope is wound onto the scroll 2, it is controlled and guided by the gland 6 and arranged in the axial order without getting tangled. The bottom of the base 1 is provided with a wire passing hole for the pull rope to pass through.

[0032] In the above specific embodiments, the purpose, technical solution and beneficial effects of the present utility model are further described in detail. It should be understood that the above are only specific embodiments of the present utility model and are not used to limit the present utility model. 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 winding device for a curtain, characterized in that: It includes a base (1), a reel (2) and a limiting device (3). The reel (2) and the limiting device (3) are both arranged inside the base (1). The reel (2) and the limiting device (3) are arranged in parallel, and the reel (2) is in driving connection with the limiting device (3). The limiting device (3) has at least one state, in which the limiting device (3) prevents the reel (2) from rotating.

2. The winding device for a curtain according to claim 1, characterized in that: The limiting device (3) includes a lead screw (3-1) and a sliding block (3-2). The sliding block (3-2) is in threaded connection with the lead screw (3-1). The lead screw (3-1) is rotatably arranged inside the base (1), and the sliding block (3-2) is slidably connected with the base (1). When the lead screw (3-1) rotates, it drives the sliding block (3-2) to slide along the length direction of the base (1).

3. The winding device for a curtain according to claim 2, characterized in that: An anti-rotation boss (1-1) is arranged on the base (1), and a groove matching the anti-rotation boss (1-1) is arranged on the sliding block (3-2).

4. The winding device for a curtain according to claim 2, wherein: A driving gear (4) is arranged at one end of the reel (2), and a driven gear (5) is arranged at one end of the lead screw (3-1). The driving gear (4) is meshed with the driven gear (5).

5. The winding device for a curtain according to claim 4, wherein: An anti-rotation protrusion is arranged at one end of the driving gear (4) facing the sliding block (3-2). When the limiting device (3) is in the extreme state, the anti-rotation protrusion abuts against the sliding block (3-2).

6. The winding device for a curtain according to claim 1, characterized in that: A gland (6) is arranged on the base (1), and the distance between the gland (6) and the reel (2) matches the diameter of the drawstring.

7. A winding device for a curtain according to claim 1, characterized in that: A threading hole for the drawstring to pass through is arranged at the bottom of the base (1).

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