A running device for a window curtain and an electric window curtain

Abstract

The utility model discloses a kind of travelling device for curtain and electric curtain, travelling device for curtain includes travelling frame and two columns of longitudinally parallelly arranged tracks, rotating drive mechanism, gear transmission mechanism and first rotating shaft are equipped on travelling frame, two ends of first rotating shaft are rotatably arranged on travelling frame, one end of first rotating shaft is fixed with travelling roller, the other end is fixed with travelling gear, travelling roller and travelling gear are movably arranged on two tracks respectively, annular groove is equipped on the tooth surface of travelling gear to be rolled with track, gear transmission mechanism is engaged with travelling gear, rotating drive mechanism drives first rotating shaft to rotate around its own axis by gear transmission mechanism.The utility model discloses the travelling device for curtain and electric curtain in curtain, since travelling gear is used as transmission component and also as travelling component, save the arrangement cost of additional travelling component or transmission component, it is conducive to improve the compactness of overall structure, reduce curtain volume.

Description

Technical Field

[0001] This utility model relates to the field of household products technology, and in particular to a walking device for curtains and an electric curtain. Background Technology

[0002] In existing electric curtain technology, the curtain walking mechanism is the core component for moving the curtain. It typically includes a walking frame, a track, a rotary drive motor, a transmission mechanism, and a roller assembly for rolling on the track. The track is usually a strip structure that extends longitudinally along the curtain installation direction. The walking frame serves as the load-bearing base, and the integrated rotary drive mechanism (such as a motor or manual drive shaft) outputs power through the transmission mechanism (usually gear transmission or belt transmission), ultimately driving the roller assembly to roll on the track, thereby realizing the overall movement of the walking frame and the curtain fabric.

[0003] However, existing curtain movement mechanisms have significant structural design shortcomings: to achieve the two functions of "power transmission" and "track rolling support" respectively, the device typically requires independent transmission components (such as dedicated transmission gears) and roller components (such as plastic rollers or metal rollers), as shown in patent application CN120226883A, which discloses an electric curtain trolley, curtain track, and curtain trolley track assembly. On the one hand, the independent transmission and roller components need to be designed, manufactured, and assembled separately, which not only increases the number of parts but also raises the overall device layout cost and assembly process complexity. On the other hand, the two independent components occupy their own installation space inside the movement frame, resulting in insufficient internal structural compactness and difficulty in reducing the overall volume. Especially in miniaturized curtain devices or narrow curtain applications where installation space is critical, the existing structure has poor adaptability and cannot effectively meet the design requirements for space saving. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a walking device for curtains and an electric curtain. This utility model aims to reduce the number of curtain parts, save on layout costs, improve the compactness of the structure, and reduce the size of the curtain.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A curtain walking device includes a walking frame and two longitudinally parallel tracks. The walking frame is equipped with a rotary drive mechanism, a gear transmission mechanism, and a first rotating shaft. Both ends of the first rotating shaft are rotatably mounted on the walking frame. One end of the first rotating shaft is fixed with a walking roller, and the other end is fixed with a walking gear. The walking roller and the walking gear are respectively movably mounted on the two tracks. The teeth of the walking gear are provided with an annular groove for rolling engagement with the tracks. The gear transmission mechanism meshes with the walking gear. The rotary drive mechanism drives the first rotating shaft to rotate around its own axis through the gear transmission mechanism.

[0006] As a further improvement to the above technical solution: the rotary drive mechanism includes a rotary drive motor and a gear ring disposed on the output shaft of the rotary drive motor, the gear ring meshing with the gear transmission mechanism.

[0007] As a further improvement to the above technical solution: the gear transmission mechanism includes a second rotating shaft and a first transmission gear and a second transmission gear respectively fixed at both ends of the second rotating shaft. The two ends of the second rotating shaft are rotatably mounted on the traveling frame. The gear ring meshes with the first transmission gear, and the second transmission gear meshes with the traveling gear.

[0008] As a further improvement to the above technical solution: the gear transmission mechanism includes a second rotating shaft, a third rotating shaft, a first transmission gear, a second transmission gear, and a third transmission gear. Both ends of the second rotating shaft and the third rotating shaft can be rotatably mounted on the traveling frame. The first transmission gear and the second transmission gear are respectively fixed at both ends of the second rotating shaft. The third transmission gear is fixed on the third rotating shaft. The gear ring meshes with the first transmission gear, the second transmission gear meshes with the third transmission gear, and the third transmission gear meshes with the traveling gear.

[0009] As a further improvement to the above technical solution: the radius of the gear ring is smaller than the radius of the first transmission gear.

[0010] As a further improvement to the above technical solution: the radius of the second transmission gear is smaller than the radius of the travel gear.

[0011] As a further improvement to the above technical solution: the walking frame is provided with driven members on both sides, which are supported on the two tracks, and the driven members can move along the length of the tracks.

[0012] As a further improvement to the above technical solution: the driven member is a slider; Alternatively, the traveling frame may be provided with a fourth rotating shaft, the two ends of which are rotatably engaged with the two side walls of the traveling frame, and the driven member is a roller, with the two rollers respectively located at the two ends of the fourth rotating shaft.

[0013] The curtain walking device also includes a housing, which is placed above the walking frame, and the outer sides of the bottom of the two tracks are provided with connecting parts that are connected to the housing.

[0014] In addition, this utility model also provides an electric curtain, including a curtain fabric, a driven device, and the aforementioned curtain walking device. The driven device is movably mounted on the two tracks. The top two ends of the curtain fabric are respectively fixed to the driven device and the curtain walking device. The electric curtain also includes a photosensitive sensor and a control module. The photosensitive sensor is electrically connected to the control module to transmit the measured photoelectric signal to the control module. The control module is connected to a rotary drive mechanism to control the movement of the rotary drive mechanism according to the received photoelectric signal.

[0015] Compared with the prior art, the advantages of this utility model are: The curtain walking device of this utility model has a walking gear whose tooth surface meshes with a gear transmission mechanism, so that the rotary drive mechanism can drive the walking gear to rotate through the gear transmission mechanism, thereby driving the first rotating shaft to rotate around its own axis. Since the walking gear has an annular groove that rolls with the track, the walking roller can also move on the track, so that the walking frame can move along the length of the track. At the same time, since the walking gear serves as both a transmission component and a walking component, it saves the cost of arranging additional walking or transmission components, which is conducive to improving the compactness of the overall structure and reducing the size of the curtain.

[0016] The electric curtain of this invention has all the advantages of a curtain walking device. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the curtain walking mechanism.

[0018] Figure 2 This is a top-down perspective diagram of the walking mechanism for curtains.

[0019] Figure 3 This is a schematic diagram of the gear transmission mechanism of the curtain's walking device.

[0020] Figure 4 This is a side view of the curtain walking mechanism.

[0021] Figure 5 This is a three-dimensional structural diagram of the housing of the curtain walking device.

[0022] Figure 6 This is a front view structural diagram of the housing of the curtain walking device.

[0023] Figure 7 yes Figure 6 A magnified structural diagram of part A in the middle.

[0024] Figure 8 This is a schematic diagram of the structure of the first rotating shaft of the curtain walking device.

[0025] Figure 9 This is a schematic diagram of the structure of the second rotating shaft of the curtain walking device.

[0026] Figure 10 This is a schematic diagram of the third rotating shaft of the curtain walking device.

[0027] Figure 11 This is a schematic diagram showing the coordination between the curtain walking device and driven device of an electric curtain and the track.

[0028] Figure 12 This is a three-dimensional structural diagram of the driven device of an electric curtain.

[0029] Figure 13 This is a top view schematic diagram of the driven mechanism of an electric curtain.

[0030] Figure 14 This is a cross-sectional structural diagram of the driven device of an electric curtain.

[0031] Figure 15 This is a side view of the driven mechanism of an electric curtain.

[0032] Figure 16 This is a schematic diagram of the driven rotation shaft of an electric curtain.

[0033] The labels in the diagram represent: 1. Walking frame; 2. Track; 21. Connecting part; 3. Rotary drive mechanism; 31. Rotary drive motor; 32. Gear ring; 4. Gear transmission mechanism; 41. Second rotating shaft; 411. First transmission gear; 412. Second transmission gear; 42. Third rotating shaft; 421. Third transmission gear; 5. First rotating shaft; 61. Walking roller; 62. Walking gear; 621. Tooth surface; 622. Annular groove; 7. Driven component; 8. Fourth rotating shaft; 9. Housing; 10. Driven device; 101. Box body; 102. Driven rotating shaft. Detailed Implementation

[0034] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between 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.

[0037] Example 1 Figures 1 to 10 This invention illustrates an embodiment of the curtain walking device. The curtain walking device of this embodiment includes a walking frame 1 and two longitudinally parallel tracks 2. The walking frame 1 is provided with a rotary drive mechanism 3, a gear transmission mechanism 4, and a first rotating shaft 5. The two ends of the first rotating shaft 5 are rotatably mounted on the walking frame 1. One end of the first rotating shaft 5 is fixedly provided with a walking roller 61, and the other end is fixedly provided with a walking gear 62. The walking roller 61 and the walking gear 62 are respectively movably mounted on the two tracks 2. The tooth surface 621 of the walking gear 62 is provided with an annular groove 622 for rolling engagement with the track 2. The gear transmission mechanism 4 meshes with the walking gear 62. The rotary drive mechanism 3 drives the first rotating shaft 5 to rotate around its own axis through the gear transmission mechanism 4.

[0038] In this embodiment, the walking device for curtains has a walking gear 62 with a tooth surface 621 that meshes with a gear transmission mechanism 4. This allows the rotary drive mechanism 3 to drive the walking gear 62 to rotate through the gear transmission mechanism 4, thereby causing the first rotating shaft 5 to rotate around its own axis. Since the walking gear 62 has an annular groove 622 that rolls with the track 2, the walking roller 61 can also move on the track 2, allowing the walking frame 1 to move along the length of the track 2. At the same time, since the walking gear 62 serves as both a transmission component and a walking component, it saves the cost of arranging additional walking or transmission components, which is beneficial for improving the overall structural compactness and reducing the size of the curtain.

[0039] Further, see Figures 1 to 4In this embodiment, the rotary drive mechanism 3 includes a rotary drive motor 31 and a gear ring 32 disposed on the output shaft of the rotary drive motor 31. The gear ring 32 meshes with the gear transmission mechanism 4. Specifically, the gear transmission mechanism 4 includes a second rotary shaft 41, a third rotary shaft 42, a first transmission gear 411, a second transmission gear 412, and a third transmission gear 421. Both ends of the second rotary shaft 41 and the third rotary shaft 42 are rotatably mounted on the traveling frame 1. The first transmission gear 411 and the second transmission gear 412 are respectively fixed at both ends of the second rotary shaft 41, and the third transmission gear 421 is fixed on the third rotary shaft 42. The gear ring 32 meshes with the first transmission gear 411, the second transmission gear 412 meshes with the third transmission gear 421, and the third transmission gear 421 meshes with the traveling gear 62. The rotary drive motor 31 drives the gear ring 32 to rotate, which in turn drives the first transmission gear 411 meshing with it to rotate, thereby causing the second rotating shaft 41 to rotate. The rotation of the second rotating shaft 41 then synchronously drives the second transmission gear 412 at its other end to rotate. Since the second transmission gear 412 meshes with the third transmission gear 421, the rotation of the second transmission gear 412 will drive the third transmission gear 421 and the third rotating shaft 42 fixed to it to rotate together. Finally, the third transmission gear 421 drives the walking gear 62 meshing with it to rotate, thereby realizing the transmission of walking power and driving the walking frame 1 to move. In this embodiment, the third transmission gear 421 is an inertial gear, and its number of teeth and module are the same as those of the second transmission gear 412. It only serves to increase the distance between the first rotating shaft 5 and the second rotating shaft 41, without changing the transmission ratio, which helps to avoid interference between the related gears. Of course, in other embodiments, the gear transmission mechanism 4 may only include a second rotating shaft 41 and a first transmission gear 411 and a second transmission gear 412 respectively fixed at both ends of the second rotating shaft 41. The two ends of the second rotating shaft 41 are rotatably mounted on the walking frame 1. The gear ring 32 meshes with the first transmission gear 411, and the second transmission gear 412 meshes with the walking gear 62.

[0040] Further, see Figures 1 to 3 In this embodiment, the radius of the gear ring 32 is smaller than the radius of the first transmission gear 411, achieving a first-stage reduction. The radius of the second transmission gear 412 is smaller than the radius of the travel gear 62, achieving a second-stage reduction. The torque ultimately transmitted to the travel gear 62 through the second-stage reduction is significantly improved, which can meet the demand for high torque during travel and avoid insufficient power.

[0041] Further, see Figure 1 and Figure 4In this embodiment, the walking frame 1 has driven members 7 on both sides, which are supported on the two tracks 2. The driven members 7 can move along the length of the track 2. Specifically, the walking frame 1 is provided with a fourth rotating shaft 8, and the two ends of the fourth rotating shaft 8 are rotatably engaged with the two side walls of the walking frame 1. The driven members 7 are rollers, and two rollers are respectively provided at the two ends of the fourth rotating shaft 8. The two driven members 7 can cooperate with the walking gear 62 and the walking roller 61 to jointly support the walking frame 1, which helps to ensure the stability of the walking frame 1 on the two tracks 2. Of course, in other embodiments, the driven members 7 can also be components such as sliders that can move and cooperate with the track 2.

[0042] Further, see Figures 1 to 4 In this embodiment, four pairs of bearings are embedded in the walking frame 1, which are used to rotate with the first rotating shaft 5, the second rotating shaft 41, the third rotating shaft 42 and the fourth rotating shaft 8 respectively. Each bearing has a cover plate on its outer side to abut against the corresponding rotating shaft. The cover plate is fixed to the walking frame 1 by screws to suppress the left and right movement of the rotating shaft and increase the reliability during use.

[0043] Further, see Figures 5 to 7 In this embodiment, the curtain walking device also includes a housing 9, which covers the walking frame 1. Connecting parts 21 are provided on the outer sides of the bottom of the two tracks 2 and connected to the housing 9. The housing 9 serves to protect the walking frame 1 and the tracks 2, preventing damage to them during use.

[0044] Further, see Figures 1 to 4 In this embodiment, the shape and size of the traveling roller 61 are consistent with those of the traveling gear 62, so that when the protrusion of the traveling gear 62 is damaged, the first rotating shaft 5 can be rotated 180 degrees during maintenance, and the traveling roller 61 can be used to mesh with the gear transmission mechanism 4, which helps to speed up the maintenance.

[0045] Further, see Figures 1 to 3 , Figures 5 to 7 In this embodiment, the width of the bottom of the annular groove 622 is greater than the width of the opening, and the width of the top of the track 2 is greater than the width of the bottom of the track 2. The annular groove 622 of the traveling gear 62 matches the track 2, which can prevent the traveling gear 62 from derailing during the travel process, which is beneficial to ensuring safety in use. Of course, it should be noted that the driven member 7 in this embodiment is also provided with an annular groove 622 that cooperates with the corresponding track 2.

[0046] Further, see Figure 8In this embodiment, keyways are provided on the first rotating shaft 5, the second rotating shaft 41, and the third rotating shaft 42. Fixed keys that cooperate with the corresponding keyways are provided on the inner circumference of the traveling roller 61, the traveling gear 62, and each transmission gear. The structure is simple and convenient. The first rotating shaft 5, the second rotating shaft 41, and the third rotating shaft 42 are provided with dedicated abutment parts for abutting against the side wall of the corresponding gear or the traveling roller 61, which facilitates quick positioning and installation during the assembly process.

[0047] Example 2 Figures 11 to 15 This illustration shows an embodiment of the electric curtain of this utility model. The electric curtain of this embodiment includes a curtain fabric (not shown), a driven device 10, and a curtain walking device as described in Embodiment 1. The driven device 10 is movably mounted on two tracks 2. The top two ends of the curtain fabric are respectively fixed to the driven device 10 and the curtain walking device. The electric curtain also includes a photosensitive sensor (not shown) and a control module (not shown). The photosensitive sensor is electrically connected to the control module to transmit the measured photoelectric signal to the control module. The control module is connected to the rotary drive mechanism 3 to control the movement of the rotary drive mechanism 3 according to the received photoelectric signal. Specifically, in this embodiment, the control module is an Arduino board (an open-source electronic prototyping platform, the core of which is a low-cost, easy-to-use control board based on a microcontroller, with a simple programming environment and rich hardware interfaces). The Arduino board has an embedded program for controlling the rotation of the rotary drive motor 31 based on brightness. When the brightness meets the set conditions, it controls the rotary drive motor 31 to rotate forward or backward. The connection between the Arduino board and the rotary drive motor 31 to control the movement of the rotary drive motor 31 is a mature existing technical solution.

[0048] When the rotary drive motor 31 drives the walking device to move towards the driven device 10 (forward movement), the curtain closes (meaning more outside light can enter the room); when the rotary drive motor 31 drives the walking device to move away from the driven device 10 (reverse movement), the curtain unfolds (meaning more outside light can enter the room); when the curtain is fully closed, the rotary drive motor 31 still drives the walking device to move forward, and the driven device 10 still has space for forward movement on the track 2, at which point the longitudinal position of the curtain can be changed. Similarly, when the curtain is fully unfolded, the rotary drive motor 31 still drives the walking device to move in the reverse direction, and the driven device 10 still has space for reverse movement on the track 2, which can also change the longitudinal position of the curtain.

[0049] Further, see Figures 12 to 15In this embodiment, the driven device 10 includes a housing 101 and two driven rotating shafts 102 passing through the housing 101. The two driven rotating shafts 102 are rotatably engaged with the housing 101 via bearings. Each end of the driven rotating shaft 102 is provided with a driven element 7 (roller) that is in rolling engagement with the two tracks 2 respectively. The rolling of the rollers has low friction and is easy to drive. Of course, in other embodiments, the number of driven rotating shafts 102 can be increased as needed.

[0050] Further, see Figure 13 , Figure 14 and Figure 16 In this embodiment, the driven rotating shaft 102 is provided with a contact part specifically for abutting against the side wall of the driven member 7. The driven rotating shaft 102 is provided with screw holes. The driven member 7 is fixed to the driven rotating shaft 102 with screws. When the driven member 7 is installed, the side wall of the driven member 7 abuts against the contact part, which can quickly align the roller and the screw holes on the driven rotating shaft 102, which is beneficial for quick installation.

[0051] As an alternative implementation, the walking device and the driven device 10 are provided with hooks to connect with the curtain fabric, which is simple in structure and easy to use.

[0052] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the present invention, or modify it into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the protection scope of the present invention.

Claims

1. A walking device for curtains, characterized in that: The system includes a walking frame (1) and two parallel tracks (2) arranged longitudinally. The walking frame (1) is equipped with a rotary drive mechanism (3), a gear transmission mechanism (4) and a first rotating shaft (5). The two ends of the first rotating shaft (5) are rotatably mounted on the walking frame (1). One end of the first rotating shaft (5) is fixed with a walking roller (61) and the other end is fixed with a walking gear (62). The walking roller (61) and the walking gear (62) are respectively movably mounted on the two tracks (2). The tooth surface (621) of the walking gear (62) is provided with an annular groove (622) for rolling engagement with the track (2). The gear transmission mechanism (4) meshes with the walking gear (62). The rotary drive mechanism (3) drives the first rotating shaft (5) to rotate around its own axis through the gear transmission mechanism (4).

2. The curtain walking device according to claim 1, characterized in that: The rotary drive mechanism (3) includes a rotary drive motor (31) and a gear ring (32) disposed on the output shaft of the rotary drive motor (31), the gear ring (32) meshing with the gear transmission mechanism (4).

3. The curtain walking device according to claim 2, characterized in that: The gear transmission mechanism (4) includes a second rotating shaft (41) and a first transmission gear (411) and a second transmission gear (412) respectively fixed at both ends of the second rotating shaft (41). The two ends of the second rotating shaft (41) are rotatably mounted on the walking frame (1). The gear ring (32) meshes with the first transmission gear (411), and the second transmission gear (412) meshes with the walking gear (62).

4. The curtain walking device according to claim 2, characterized in that: The gear transmission mechanism (4) includes a second rotating shaft (41), a third rotating shaft (42), a first transmission gear (411), a second transmission gear (412), and a third transmission gear (421). Both ends of the second rotating shaft (41) and the third rotating shaft (42) are rotatably mounted on the walking frame (1). The first transmission gear (411) and the second transmission gear (412) are respectively fixed at both ends of the second rotating shaft (41). The third transmission gear (421) is fixed on the third rotating shaft (42). The gear ring (32) meshes with the first transmission gear (411), the second transmission gear (412) meshes with the third transmission gear (421), and the third transmission gear (421) meshes with the walking gear (62).

5. The curtain walking device according to any one of claims 3 or 4, characterized in that: The radius of the gear ring (32) is smaller than the radius of the first transmission gear (411).

6. The curtain walking device according to claim 5, characterized in that: The radius of the second transmission gear (412) is smaller than the radius of the travel gear (62).

7. The curtain walking device according to any one of claims 1 to 4, characterized in that: The walking frame (1) is provided with follower (7) on both sides, which are supported on the two tracks (2). The follower (7) can move along the length of the track (2).

8. The curtain walking device according to claim 7, characterized in that: The driven member (7) is a slider; Alternatively, the walking frame (1) is provided with a fourth rotating shaft (8), and the two ends of the fourth rotating shaft (8) are respectively rotatably engaged with the two side walls of the walking frame (1). The driven member (7) is a roller, and the two rollers are respectively located at the two ends of the fourth rotating shaft (8).

9. The curtain walking device according to any one of claims 1 to 4, characterized in that: The curtain walking device also includes a housing (9), which is placed above the walking frame (1). The bottom outer sides of the two tracks (2) are provided with connecting parts (21) that are connected to the housing (9).

10. An electric curtain, characterized in that: The electric curtain includes a curtain fabric, a driven device (10), and a curtain walking device according to any one of claims 1 to 9. The driven device (10) is movably mounted on the two tracks (2). The two ends of the top of the curtain fabric are respectively fixed to the driven device (10) and the curtain walking device. The electric curtain also includes a photosensitive sensor and a control module. The photosensitive sensor is electrically connected to the control module to transmit the measured photoelectric signal to the control module. The control module is connected to a rotary drive mechanism (3) to control the movement of the rotary drive mechanism (3) according to the received photoelectric signal.

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