Curtain bottom bar inclination self-leveling device
Patent Information
- Application Number
- CN202521464390.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-14
- Publication Date
- 2026-09-11
- Estimated Expiration
- 2035-07-14
AI Technical Summary
电动窗帘市场上暂无自动调平的装置,只存在人工判断倾斜后,停止窗帘运动或机械式按压开关在卷绳位置,倾斜后电机干预的方式来修正
Smart Images

Figure CN224742296U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electric curtain manufacturing technology, and in particular to a curtain bottom rod tilt self-leveling device. Background Technology
[0002] Motorized curtains with cord reels can tilt during raising or lowering due to handles or protrusions on the window sill or glass surface. If the tilt is severe, the cord reel inside the curtain can malfunction due to tangled cords, requiring removal and rewinding. Since the cord reel is installed inside the curtain, it's not easy for the average person to repair, and even for professionals, repositioning it is not a simple task. Currently, there are no automatic leveling devices on the market for motorized curtains; corrections are made by manually stopping the curtain's movement after tilting or by mechanically pressing a switch in the cord reel position, with the motor intervening to correct the tilt. Therefore, the market urgently needs a device that allows the motor to automatically retract to a horizontal position when the curtain tilts, thus protecting the cord reel and other components from damage. Utility Model Content
[0003] The purpose of this invention is to provide a self-leveling device for tilting curtain rods, in order to solve the problems mentioned in the background art.
[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical measures: a curtain rod tilt self-leveling device, characterized in that: the device is installed on the bottom rod of an electric curtain, including a base connected to the bottom rod, and an angle tilt sensing module is installed in the base.
[0005] Compared with the prior art, the advantages of this utility model are: by installing an angle tilt sensing module in the base, the module can automatically detect when the tilt angle reaches the trigger threshold and control the motor to retreat to the horizontal position, thereby protecting the rope winder and other components from damage and increasing the intelligent function of the electric curtain.
[0006] As an improvement of this utility model, a cover plate is installed on the base to seal the angle tilt sensing module. The purpose of this design is to protect the angle tilt sensing module from external impacts that could affect its detection performance.
[0007] As an improvement of this utility model, the base includes a U-shaped hollow strip, on which a cross-shaped contact post is provided for controlling the opening and closing of the angle tilt sensing module. The purpose of this design is that the outer perimeter of the U-shaped hollow strip is open, thus maintaining a certain degree of elasticity. As a button, it automatically resets under the action of elasticity after being pressed. The cross-shaped contact post is to increase the contact area between the button and the microswitch.
[0008] As an improvement of this utility model, a slot is provided on the side of the angle tilt sensing module, and a limiting rib is provided on the base to match the slot. The purpose of this design is to prevent the angle tilt sensing module from shaking by matching the slot and the limiting rib.
[0009] As an improvement of this utility model, the cover plate is provided with a latch, and the base is provided with a snap-fit strip to engage the latch of the cover plate. The purpose of this design is that the latch will not wobble after being snapped under the snap-fit strip.
[0010] As an improvement to this invention, the device is installed in the middle of the bottom rod of the electric curtain. The purpose of this design is to ensure more accurate measurement of the tilt angle when installed in the middle of the bottom rod.
[0011] As an improvement to this invention, the base is provided with a USB through-hole. The purpose of this design is that the USB through-hole is used to charge the angle tilt sensing module, etc., via a USB data cable.
[0012] As an improvement to this utility model, the base is bolted to the base rod. The purpose of this design is to provide a simple structure and easy assembly / disassembly. Attached Figure Description
[0013] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.
[0014] In the attached diagram: Figure 1 Disassembly of the curtain rod tilt self-leveling device described in this utility model Figure 1 .
[0015] Figure 2 This is a schematic diagram showing the position of the curtain rod tilting self-leveling device described in this utility model in an electric curtain.
[0016] Figure 3 The three-dimensional base described in this utility model Figure 1 .
[0017] Figure 4 This is a perspective view of the cover plate described in this utility model.
[0018] Figure 5 This is a perspective view of the angle tilt sensing module described in this utility model.
[0019] Figure 6 shows an exploded view of the curtain rod tilt self-leveling device of this utility model. Figure 2 .
[0020] Figure 7 shows a three-dimensional view of the base described in this utility model. Figure 2 .
[0021] Explanation of reference numerals in the attached drawings: 1. Base rod; 2. Base; 3. Angle tilt sensing module; 4. Cover plate; 5. U-shaped hollow strip; 6. Cross contact post; 7. Groove; 8. Limiting rib; 9. Bayonet; 10. Buckling strip; 11. USB through hole; 12. Button; 13. Bolt; 14. USB interface; 15. Curtain body; 16. Curtain box; 17. Curtain rod tilt self-leveling device; 18. Micro switch. Detailed Implementation
[0022] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.
[0023] Example 1 Please refer to Figure 1 -7.
[0024] This embodiment provides a curtain rod tilt self-leveling device. The device is installed on the bottom rod 1 of an electric curtain and includes a base 2 connected to the bottom rod 1. An angle tilt sensing module 3 is installed in the base 2. The angle tilt sensing module 3 wirelessly controls the motor movement of the electric curtain via 433MHz. Since the angle tilt sensing module 3 is a commercially available product and the motor control method is existing technology, it will not be described in detail here.
[0025] In the embodiments of this utility model application, please refer to Figure 1 and Figure 6 The base 2 is equipped with a cover plate 4 that seals the angle tilt sensing module 3. The cover plate 4 can protect the angle tilt sensing module 3 from external impacts that could affect its detection performance.
[0026] In the embodiments of this utility model application, please refer to Figure 3 and Figure 7 The base 2 includes a U-shaped perforated strip 5, on which a cross-shaped contact post 6 is provided to control the opening and closing of the angle tilt sensing module 3. The outer periphery of the U-shaped perforated strip 5 is empty (only one side is not perforated), so it can maintain a certain degree of elasticity. It is used as a button 12. After being pressed, it can automatically reset under the action of elasticity. The cross-shaped contact post 6 is to increase the contact area between the button 12 and the micro switch 18.
[0027] In the embodiments of this utility model application, please refer to Figure 5The angle tilt sensing module 3 has a slot 7 on its side, and the base 2 has a limiting rib 8 that matches the slot 7. By opening two slots 7 on each side of the commercially available angle tilt sensing module 3, and matching the shape and position of the slots 7 with the limiting rib 8, the angle tilt sensing module 3 can be prevented from shaking after installation.
[0028] In the embodiments of this utility model application, please refer to Figure 4 The cover plate 4 is provided with a latch 9, and the base 2 is provided with a clamping strip 10 that engages with the latch 9 of the cover plate 4. Once the latch 9 is clamped under the clamping strip 10, it will not wobble.
[0029] Furthermore, the curtain rod tilt self-leveling device 17 is installed in the middle of the bottom rod 1 of the electric curtain. Installing it in the middle of the bottom rod 1 allows for more accurate measurement of the tilt angle.
[0030] Furthermore, the base 2 is provided with a USB through-hole 11. The USB through-hole 11 is used to charge the angle tilt sensing module, etc., through a USB data cable.
[0031] Furthermore, the base 2 is connected to the base rod 1 by bolts 13. This structure is simple and easy to assemble and disassemble.
[0032] This embodiment provides a curtain rod tilt self-leveling device. During normal use, when the curtain 15 (curtain fabric) rises or falls, the curtain 15 will tilt when the handle or some protrusions on the window sill touch it. When it tilts to a set angle, the angle tilt sensing module 3 can automatically detect that the threshold has been triggered and control the motor to retreat to the initial horizontal position, protecting the rope winder and other components from damage. This eliminates the need to disassemble and reassemble the rope winder installed in the curtain box 16.
[0033] Compared with the prior art, the advantages of this utility model are: by installing an angle tilt sensing module 3 in the base 2, the module can automatically detect when the tilt angle reaches the trigger threshold and control the motor to retreat to the horizontal position, thereby protecting the rope winder and other components from damage and increasing the intelligent function of the electric curtain.
[0034] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0035] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0036] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A tilt and self-leveling device for a curtain bottom rail, characterized in that: The device is installed on the bottom rod (1) of the electric curtain and includes a base (2) connected to the bottom rod (1), and an angle tilt sensing module (3) is installed in the base (2); The base (2) is equipped with a cover plate (4) that seals the angle tilt sensing module (3); The base (2) is bolted to the base rod (1).
2. A tilt and self-latching device for a curtain bottom rail according to claim 1, characterized in that: The base (2) is provided with a U-shaped hollow strip (5), and a cross-shaped contact post (6) is provided on the U-shaped hollow strip (5) to control the opening and closing of the angle tilt sensing module (3).
3. The curtain rod tilt self-leveling device according to claim 1, characterized in that: The angle tilt sensing module (3) has a slot (7) on its side, and the base (2) has a limiting rib (8) that matches and is assembled with the slot (7).
4. The curtain rod tilt self-leveling device according to claim 1, characterized in that: The cover plate (4) is provided with a snap-fit (9), and the base (2) is provided with a snap-fit strip (10) that snaps into the snap-fit (9) of the cover plate (4).
5. The curtain rod tilt self-leveling device according to claim 1, characterized in that: The device is installed in the middle of the bottom rod (1) of the electric curtain.
6. The curtain rod tilt self-leveling device according to claim 1, characterized in that: The base (2) is provided with a USB through hole (11).