Double ball screw slide rail of electric curtain stepper motor

Abstract

This utility model relates to the technical field of electric curtain accessories, specifically, to a double ball screw slide rail for an electric curtain stepper motor. It includes a slide rail body and a screw disposed within the slide rail body. Both smooth sections at the ends of the screw are rotatably connected to the slide rail body. A rectangular hole communicating with the outside is provided on the front side of one end housing of the slide rail body. A driven gear is fixedly installed on the smooth section of the screw near the rectangular hole. A stepper motor is detachably installed at the end of the slide rail body. A driving gear is fixedly installed at the end of the stepper motor's output shaft. The driving gear is inserted through the rectangular hole and meshes with the driven gear. An oiling hole for injecting oil into the meshing area of ​​the driving and driven gears is also provided on the front side of the end housing of the slide rail body. This utility model facilitates assembly operations and reduces the space occupied at the end of the slide rail.

Description

Technical Field

[0001] This utility model relates to the technical field of electric curtain accessories, specifically to a double ball screw slide rail for an electric curtain stepper motor. Background Technology

[0002] With the booming development of the smart home industry, electric curtains have been widely used in homes, offices and commercial buildings due to their convenient operation and high level of intelligence. As the core driving component of electric curtains, stepper motors can achieve precise speed and angle control to meet users' refined needs for the degree of curtain opening and closing. However, the sliding rail structure used in traditional electric curtains, such as ordinary linear sliding rails or single ball screw sliding rails, has many technical bottlenecks in practical applications.

[0003] Ordinary linear guide rails mainly rely on the sliding friction between the slider and the guide rail to move the curtains. This type of guide rail not only has high running resistance, leading to increased energy consumption of the stepper motor, but also suffers from severe wear between the slider and the guide rail after long-term use, which can easily cause problems such as jamming and loud noise, reducing the lifespan and user experience of the electric curtains. Although single ball screw guide rails improve transmission efficiency to some extent, they still cannot meet the needs of smooth operation of large and heavy curtains. Under heavy loads, they are prone to decreased transmission accuracy and curtain shaking, failing to provide users with a smooth and quiet curtain opening and closing effect.

[0004] To avoid the aforementioned problems, most electric curtains currently use a double ball screw slide rail combined with a stepper motor for drive operation. For example, a common single screw paired with a double nut type double ball screw can drive the balls to roll in the raceway by rotating a single screw, converting the rotational motion of the screw into the linear motion of the nut. Since the friction between the balls and the screw and nut is rolling friction, the friction is greatly reduced compared to traditional sliding friction, resulting in more stable transmission.

[0005] However, conventional double ball screw slides also have some shortcomings in practical use. For example, most double ball screw slides typically install the stepper motor at the end of the slide. Since stepper motors also have a certain size, this size occupies a certain amount of space. Due to the limitation of installation space at building windows, the length of the screw rod cannot meet the length of the window. When curtains are installed, the end of the curtain cannot completely cover the window, affecting the usage effect. In view of this, we propose a double ball screw slide with a stepper motor for electric curtains. Utility Model Content

[0006] The purpose of this invention is to provide a double ball screw slide rail for an electric curtain stepper motor, so as to solve the defects mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] The electric curtain stepper motor double ball screw slide rail includes a slide rail body and a screw installed inside the slide rail body. The smooth sections at both ends of the screw are rotatably connected to the slide rail body. A rectangular hole communicating with the outside is provided on the front side of one end housing of the slide rail body. A driven gear is fixedly installed on the smooth section of the screw near the rectangular hole. A stepper motor is detachably installed at the end of the slide rail body. A driving gear is fixedly installed at the end of the output shaft of the stepper motor. The driving gear is inserted into the rectangular hole and meshes with the driven gear. An oil injection hole for injecting oil into the meshing part of the driving gear and the driven gear is also provided on the front side of the end housing of the slide rail body.

[0009] Preferably, fixing protrusions are fixedly installed on both ends of the housing of the slide rail body, and the fixing protrusions are used to fix the slide rail body to the corresponding external wall.

[0010] Preferably, an oil baffle is fixedly installed on the bottom wall at the opening of the rectangular hole, and the oil baffle is located below the drive gear.

[0011] Preferably, an arc-shaped cleaning surface is provided between the back of the oil baffle and the bottom wall of the rectangular hole, and the cross-section of the arc-shaped cleaning surface is arc-shaped;

[0012] This setting facilitates subsequent cleaning operations for accumulated lubricating oil and other contaminants on the curved cleaning surface.

[0013] Preferably, the thickness of the driven gear and the driving gear is between 0.5cm and 1.5cm, and the stepper motor is mounted on the front side of the slide rail body;

[0014] This feature reduces the space occupied by the stepper motor, driven gear, and driving gear in the curtain installation area, allowing the curtains to provide more comprehensive coverage of the window during installation.

[0015] Preferably, two symmetrical studs are fixedly installed on the front side of the end housing of the slide rail body, and two symmetrical collars are fixedly installed on the bottom housing of the stepper motor. The collars are fitted onto the studs and are fixed by nuts.

[0016] Preferably, the nut and the stud are threaded together, and the nut presses the collar against the front side of the slide rail body;

[0017] The above two settings allow for fixed installation from the bottom of the stepper motor, and since there is ample space at the bottom of the stepper motor, using nuts for fixing is feasible and more secure.

[0018] Preferably, a threaded hole is provided on the front side of the end housing of the slide rail body, and an upper protrusion is fixedly installed on the top surface of the stepper motor housing. The upper protrusion and the threaded hole are fixedly connected by fastening screws.

[0019] This setting allows for further securing of the top of the stepper motor.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. This utility model achieves the goal of reducing the space occupied by the stepper motor and gears in the curtain installation area by setting the driving gear at the end of the output shaft of the stepper motor to be inserted along the rectangular hole of the slide rail body and mesh with the driven gear on the lead screw. At the same time, the stepper motor is installed on the front side of the slide rail body, and the thickness of the driven gear and the driving gear is limited. This avoids the problem of the lead screw length being limited due to the size of the motor and gears, and achieves the goal of enabling the curtains to cover the window more comprehensively and improving the use effect.

[0022] 2. This utility model provides an oil injection hole on the front side of the end housing of the slide rail body, which allows oil to be injected into the meshing parts of the driving gear and the driven gear. At the same time, an oil baffle is provided on the bottom wall of the rectangular hole, and the back of the oil baffle is provided with an arc-shaped cleaning surface. This achieves effective lubrication of the gear meshing parts, reduces friction and wear, and facilitates the cleaning of accumulated lubricating oil. This reduces maintenance difficulty, extends the service life of the gears, and ensures transmission stability.

[0023] 3. This utility model uses studs on the front side of the end housing of the slide rail body to fix the stepper motor with the collar and nut at the bottom. At the same time, fastening screws are used to connect the upper protrusion on the top of the stepper motor to the threaded hole of the slide rail body. This achieves double fixation from the bottom and top of the stepper motor. The ample space at the bottom of the stepper motor and the use of nuts for fixing make it more secure and reliable, thereby improving the installation stability of the stepper motor and ensuring smooth operation of the slide rail. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0026] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0027] Figure 4 This is a partial structural schematic diagram of the present invention;

[0028] Figure 5 This utility model Figure 3 Enlarged view of point B in the middle;

[0029] The meanings of the labels in the diagram are as follows:

[0030] 1. Slide rail body; 10. Fixing protrusion; 11. Rectangular hole; 111. Oil injection hole; 12. Oil baffle; 121. Arc-shaped cleaning surface; 13. Threaded hole; 14. Stud; 15. Lead screw; 151. Driven gear;

[0031] 2. Stepper motor; 20. Upper protrusion; 21. Collar; 22. Nut; 23. Drive gear. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Please see Figures 1-5 This utility model provides a technical solution: a double ball screw slide rail for an electric curtain stepper motor, including a slide rail body 1 with its bottom connected to the outside and a screw 15 disposed inside the slide rail body 1. A corresponding slider is threaded onto the screw 15, which is slidably connected to the slide rail body 1 and used to hang the curtain. The smooth sections at both ends of the screw 15 are rotatably connected to the slide rail body 1, allowing the screw 15 to rotate stably within the slide rail body 1, providing a transmission basis for the movement of the electric curtain. A rectangular hole 11 connected to the outside is provided on the front side of the housing at one end of the slide rail body 1. A driven gear 151 is fixedly installed on the smooth section of the screw 15 near the rectangular hole 11. A stepper motor 2 is detachably installed at the end of the slide rail body 1. A drive gear 23 is fixedly installed at the end of the output shaft of the stepper motor 2. The drive gear 23 is inserted along the rectangular hole 11 and meshes with the driven gear 151, so that the power of the stepper motor 2 can be effectively transmitted to the screw 15, realizing the conversion of the rotational motion of the motor into the linear motion of the curtain.

[0034] like Figure 1As shown, fixing protrusions 10 are fixedly installed on both ends of the slide rail body 1. The fixing protrusions 10 are used to fix the slide rail to the corresponding external wall by means of expansion screws, so as to provide a reliable installation and fixing method for the entire slide rail system, ensure the stability of the slide rail during use, and avoid loosening, displacement and other situations.

[0035] like Figure 3 and Figure 5 As shown, the front side of the end housing of the slide rail body 1 is also provided with an oil injection hole 111 for injecting oil into the meshing part of the driving gear 23 and the driven gear 151, so as to enable the injection of lubricating oil into the meshing part of the driving gear 23 and the driven gear 151 for lubrication operation; an oil baffle 12 is fixedly installed on the bottom wall at the opening of the rectangular hole 11. The oil baffle 12 is located below the driving gear 23 and can effectively block the lubricating oil injected from the oil injection hole 111 from dripping, preventing the lubricating oil from polluting the surrounding environment or dripping onto the curtain; at the same time, the oil baffle 12 can also intercept the oil thrown out during the gear meshing process, reducing the waste of lubricating oil.

[0036] like Figure 5 As shown, an arc-shaped cleaning surface 121 is provided between the back of the oil baffle 12 and the bottom wall of the rectangular hole 11. The cross-section of the arc-shaped cleaning surface 121 is arc-shaped. By utilizing its arc-shaped cross-section design, the lubricating oil and other impurities accumulated in this part can slide off naturally under the action of gravity or be easily cleaned with tools, which greatly reduces the cleaning difficulty, effectively keeps the exterior of the slide rail body 1 clean, and reduces the amount of maintenance work.

[0037] In this embodiment, the thickness of the driven gear 151 and the driving gear 23 is between 0.5cm and 1.5cm. The stepper motor 2 is installed on the front side of the slide rail body 1, which greatly reduces the space occupied by the stepper motor 2, driven gear 151 and driving gear 23 in the curtain installation area. This avoids the limitation of the screw length due to the excessive size of the components, so that the installed curtain can completely cover the window, significantly improving the curtain's blocking effect and performance.

[0038] like Figure 3 and Figure 4 As shown, two symmetrical studs 14 are fixedly installed on the front side of the end housing of the slide rail body 1. Two symmetrical collars 21 are fixedly installed on the bottom housing of the stepper motor 2. The collars 21 are fitted onto the studs 14 and fixed by nuts 22. The nuts 22 are threadedly connected to the studs 14. The nuts 22 press the collars 21 tightly onto the front side of the slide rail body 1. Taking advantage of the sufficient space at the bottom of the stepper motor 2, the nuts 22 are threadedly connected to the studs 14 and press the collars 21 tightly. This fixing method is convenient to operate and has a firm connection, which effectively enhances the stability of the stepper motor 2 installation and ensures that it will not easily shake or shift during operation.

[0039] like Figure 3 As shown, a threaded hole 13 is provided on the front side of the end housing of the slide rail body 1. An upper protrusion 20 is fixedly installed on the top surface of the stepper motor 2 housing. The upper protrusion 20 and the threaded hole 13 are fixedly connected by fastening screws, which further fixes the top of the stepper motor 2. Together with the bottom fixing structure, it forms a double fixation, which comprehensively enhances the installation stability of the stepper motor 2, so that it remains stable during long-term operation and ensures the reliability and stability of the slide rail system transmission.

[0040] When using the electric curtain stepper motor double ball screw slide rail of this utility model, first confirm the installation position, align the fixing protrusions 10 on the two end housings of the slide rail body 1 with the wall markings, and use expansion screws to pass through the fixing protrusions 10 to firmly install the slide rail body 1 on the wall, providing stable support for the entire slide rail system.

[0041] Place the collar 21 of the bottom housing of the stepper motor 2 onto the stud 14 on the front side of the end housing of the slide rail body 1, and tighten it with the nut 22 to secure the bottom of the stepper motor 2. Then align the upper protrusion 20 on the top surface of the stepper motor 2 housing with the threaded hole 13 at the end of the slide rail body 1, and further fix it with the fastening screw to complete the installation of the stepper motor 2. During this process, the driving gear 23 is inserted through the rectangular hole 11, so that it meshes with the driven gear 151 on the lead screw 15 to realize power transmission.

[0042] After installation, lubricating oil is injected into the meshing part of the driving gear 23 and driven gear 151 through the oil injection hole 111. The oil baffle 12 will prevent lubricating oil from dripping, avoiding environmental pollution and damage to the curtains. Power is then connected, and the stepper motor 2 is started to test whether the electric curtain can open and close smoothly under the drive of the lead screw 15.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. Double ball screw slide rail of electric curtain stepper motor, comprising a slide rail body (1) and a screw rod (15) arranged in the slide rail body (1), characterized in that: Both ends of the lead screw (15) are rotatably connected to the slide rail body (1). A rectangular hole (11) communicating with the outside is provided on the front side of the end housing of the slide rail body (1). A driven gear (151) is fixedly installed on the smooth section column of the lead screw (15) near the rectangular hole (11). A stepper motor (2) is detachably installed at the end of the slide rail body (1). A drive gear (23) is fixedly installed at the end of the output shaft of the stepper motor (2). The drive gear (23) is inserted into the rectangular hole (11) and meshes with the driven gear (151). An oil injection hole (111) for injecting oil into the meshing part of the drive gear (23) and the driven gear (151) is also provided on the front side of the end housing of the slide rail body (1).

2. The double ball screw slide rail of the electric curtain stepper motor according to claim 1, characterized in that: The slide rail body (1) has fixed protrusions (10) fixedly installed on both ends of the housing. The fixed protrusions (10) are used to be fixedly installed on the corresponding external wall.

3. The double ball screw slide rail of the electric curtain stepper motor according to claim 1, characterized in that: An oil baffle (12) is fixedly installed on the bottom wall at the opening of the rectangular hole (11), and the oil baffle (12) is located below the drive gear (23).

4. The double ball screw slide rail of the electric curtain stepper motor according to claim 3, characterized in that: An arc-shaped cleaning surface (121) is provided between the back of the oil baffle (12) and the bottom wall of the rectangular hole (11), and the cross section of the arc-shaped cleaning surface (121) is arc-shaped.

5. The double ball screw slide rail of the electric curtain stepper motor according to claim 1, characterized in that: The thickness of the driven gear (151) and the driving gear (23) is between 0.5cm and 1.5cm, and the stepper motor (2) is mounted on the front side of the slide rail body (1).

6. The double ball screw slide rail of the electric curtain stepper motor according to claim 1, characterized in that: Two symmetrical studs (14) are fixedly installed on the front side of the end housing of the slide rail body (1). Two symmetrical collars (21) are fixedly installed on the bottom housing of the stepper motor (2). The collars (21) are fitted on the studs (14) and are fixed by nuts (22).

7. The double ball screw slide rail of the electric curtain stepper motor according to claim 6, characterized in that: The nut (22) is threadedly connected to the stud (14), and the nut (22) presses the collar (21) against the front side of the slide rail body (1).

8. The double ball screw slide rail of the electric curtain stepper motor according to claim 1, characterized in that: The slide rail body (1) has a threaded hole (13) on the front side of the end housing. The stepper motor (2) has an upper protrusion (20) fixedly installed on the top surface of the housing. The upper protrusion (20) and the threaded hole (13) are fixedly connected by fastening screws.

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