Miniaturized drying machine lifting motor integrated transmission module based on harmonic gear

Abstract

The present application relates to the technical field of clothes drying machine, in particular to a miniaturized clothes drying machine lifting motor integrated transmission module based on harmonic gear, which comprises a mounting seat, an installation cavity is formed in the mounting seat, a rigid wheel is fixedly installed in the installation cavity, a flexible wheel is arranged in the rigid wheel, a driving motor is fixedly installed on the inner wall of the installation cavity, a wave generator is fixedly installed on the output end of the driving motor through a shaft coupling, the wave generator is sleeved in the flexible wheel, an annular rotating groove is formed on the outer side wall of the rigid wheel, an annular rotating block is rotatably connected in the annular rotating groove, a double-rotating rod and a winding drum structure are adopted to disperse the connecting rope tension and reduce the component wear; the flexible wheel and the rigid wheel are precisely decelerated through tooth difference meshing, and are matched with multi-stage gear meshing to drive the double-rotating rod to realize stable lifting and precise positioning of the clothes drying rack; the L-shaped fixing block is linked and lifted and fixed through tooth meshing to ensure safety and comprehensively improve the practicality, stability and reliability of the module.

Description

Technical Field

[0001] This invention relates to the field of clothes drying rack technology, specifically to a miniaturized integrated transmission module for a clothes drying rack lifting motor based on harmonic gears. Background Technology

[0002] With the popularization of smart homes and the refined utilization of living spaces, miniaturized, high-performance clothes drying racks have become the mainstream demand in the market. The performance of their core lifting and transmission module directly determines the user experience and space adaptability of the clothes drying rack.

[0003] However, the transmission accuracy and stability of existing modules are insufficient. Most products use traditional cylindrical gear transmission or belt transmission. Traditional gear transmission has problems such as large meshing gaps and low reduction ratio control accuracy, which makes the clothes drying rack prone to shaking and jamming during lifting and lowering, and cannot achieve precise height positioning. Belt transmission is prone to problems such as slippage and aging and loosening. After long-term use, the transmission efficiency will be greatly reduced, which will further affect the smoothness of lifting and lowering. Secondly, most mainstream modules use a single rotating rod and winding drum winding structure. The tension of the connecting rope is completely concentrated on a single rotating rod and winding drum. Long-term exposure to alternating loads can easily lead to fatigue wear and deformation of components, and even breakage of the connecting rope, which significantly shortens the overall service life of the module and increases the user's maintenance costs. Therefore, it is necessary to propose a miniaturized clothes drying rack lifting motor integrated transmission module based on harmonic gears. Summary of the Invention

[0004] To address the problems in the prior art, this invention provides a miniaturized integrated transmission module for the lifting motor of a clothes drying rack based on harmonic gears.

[0005] The technical solution adopted by this invention to solve its technical problem is: a miniaturized clothes drying rack lifting motor integrated transmission module based on harmonic gears, including a mounting base, an installation cavity inside the mounting base, a rigid wheel fixedly installed inside the installation cavity, a flexible wheel disposed inside the rigid wheel, a drive motor fixedly installed on the inner wall of the installation cavity, a wave generator fixedly installed at the output end of the drive motor through a coupling, the wave generator being sleeved inside the flexible wheel, an annular rotating groove being formed on the outer wall of the rigid wheel, an annular rotating block rotatably connected within the annular rotating groove, and a fixed connection on the annular rotating block. A connecting rod is attached, and the connecting rod is fixedly connected to a flexible wheel. A first rotating rod and a second rotating rod are rotatably connected within the mounting cavity via bearings. A driving gear is fixedly sleeved on the annular rotating block. A transmission gear is fixedly sleeved on the first rotating rod, and a driven gear is fixedly sleeved on the second rotating rod. The transmission gear meshes with the driving gear and the driven gear. A lifting assembly is fixedly installed on the bottom wall of the mounting cavity, and the upper end of the lifting assembly is provided with teeth. A winding drum is fixedly sleeved on the wall of the first rotating rod, and a through hole is provided through the upper wall of the mounting cavity.

[0006] Specifically, the lifting assembly includes a drive cylinder, which is fixedly connected to the bottom wall of the mounting cavity. A piston rod is movably connected to the output end of the drive cylinder. The top end of the piston rod extends outside the drive cylinder and is fixedly connected to a fixing block. The fixing block is L-shaped, and its upper surface and recesses are provided with teeth.

[0007] Specifically, two fixing rings are fixedly installed on the inner wall of the rigid wheel, the teeth of the rigid wheel are arranged between the two fixing rings, and the flexible wheel is sleeved between the two fixing rings. The outer wall of the flexible wheel is provided with teeth that mesh with the teeth inside the rigid wheel.

[0008] Specifically, a concave rotating wheel is rotatably connected to the through hole via a bearing, and the through hole and the concave rotating wheel are positioned above the second rotating rod.

[0009] Specifically, both the annular rotating groove and the annular rotating block have L-shaped cross-sections. One end of the annular rotating block extends to the outside of the rigid wheel. The connecting rod is fixedly connected to the inner wall of the annular rotating block located outside the rigid wheel. The driving gear is fixedly sleeved on the outer wall of the annular rotating block located outside the rigid wheel.

[0010] Specifically, the tooth pattern is arranged parallel to the drive gear and the driven gear, and the tooth pattern meshes with the drive gear and the driven gear.

[0011] Specifically, the drive motor and wave generator are both housed inside the rigid wheel.

[0012] The beneficial effects of this invention are as follows: The miniaturized clothes drying rack lifting motor integrated transmission module based on harmonic gears of this invention adopts a structure of double rotating rods and a winding drum, which effectively disperses the tension of the connecting rope and reduces wear on core components; and achieves precise and stable deceleration through the elastic deformation of the flexible wheel and the meshing of the tooth difference of the rigid wheel. The backlash-free meshing characteristic, combined with the precise meshing of multi-stage gears, drives the double rotating rods to smoothly raise and lower the clothes rack and accurately position its height; the L-shaped fixing block meshes with the gears through its teeth to achieve linkage control of lifting adjustment and locking, ensuring safe use and comprehensively improving the practicality, stability and reliability of the module. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 A schematic diagram of the external structure of the miniaturized clothes drying rack lifting motor integrated transmission module based on harmonic gears provided by the present invention; Figure 2 An internal cross-sectional view of the adjustment state of the miniaturized clothes drying rack lifting motor integrated transmission module based on harmonic gears provided by the present invention; Figure 3 An internal cross-sectional view of the locked state of the miniaturized clothes drying rack lifting motor integrated transmission module based on harmonic gears provided by the present invention; Figure 4 A schematic diagram of the exploded structure of the harmonic gear in the miniaturized clothes drying rack lifting motor integrated transmission module based on harmonic gears provided by the present invention; Figure 5 A schematic diagram of the external structure of the harmonic gear in the miniaturized clothes drying rack lifting motor integrated transmission module based on harmonic gears provided by the present invention. Figure 6 The internal cross-sectional view of the harmonic gear in the miniaturized clothes drying rack lifting motor integrated transmission module based on harmonic gears provided by the present invention.

[0015] In the diagram: 1. Mounting base; 2. Mounting cavity; 3. Rigid wheel; 4. Flexible wheel; 5. Drive motor; 6. Wave generator; 7. Annular rotating groove; 8. Annular rotating block; 9. Connecting rod; 10. First rotating rod; 11. Second rotating rod; 12. Driving gear; 13. Transmission gear; 14. Driven gear; 15. Tooth pattern; 16. Rewinding drum; 17. Through hole; 18. Starting cylinder; 19. Piston rod; 20. Fixing block; 21. Fixing ring; 22. Concave rotating wheel. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0017] like Figures 1-6 As shown, the present invention provides the following technical solution: Example 1: A miniaturized clothes drying rack lifting motor integrated transmission module based on harmonic gears includes a mounting base 1. The mounting base 1 has an internal mounting cavity 2. A rigid wheel 3 is fixedly mounted inside the mounting cavity 2. A flexible wheel 4 is disposed inside the rigid wheel 3. A drive motor 5 is fixedly mounted on the inner wall of the mounting cavity 2. A wave generator 6 is fixedly mounted on the output end of the drive motor 5 via a coupling. The wave generator 6 is sleeved inside the flexible wheel 4. An annular rotating groove 7 is formed on the outer wall of the rigid wheel 3. An annular rotating block 8 is rotatably connected within the annular rotating groove 7. A connecting rod 9 is fixedly connected to the annular rotating block 8. The connecting rod 9 is fixedly connected to the flexible wheel 4. A first rotating rod 10 is rotatably connected to the rigid wheel 4 via a bearing within the mounting cavity 2. The second rotating rod 11 has a drive gear 12 fixedly sleeved on the annular rotating block 8. The first rotating rod 10 has a transmission gear 13 fixedly sleeved on it. The second rotating rod 11 has a driven gear 14 fixedly sleeved on it. The transmission gear 13 meshes with the drive gear 12 and the driven gear 14. A lifting assembly is fixedly installed on the bottom cavity wall of the mounting cavity 2. The upper end of the lifting assembly is provided with teeth 15. A winding drum 16 is fixedly sleeved on the rod wall of the first rotating rod 10. A through hole 17 is opened through the upper cavity wall of the mounting cavity 2. A connecting rope is fixedly connected to the winding drum 16. One end of the connecting rope wraps around the second rotating rod 11 and extends through the through hole 17 to the outside of the mounting base 1 and is fixedly connected to the lifting clothes rack. When using it, the following steps are included: Step 1: Start the drive cylinder 18. The drive cylinder 18 drives the piston rod 19 to descend, and the piston rod 19 drives the fixed block 20 to descend. The fixed block 20 drives the toothed 15 to descend and disengage from the transmission gear 13 and the driven gear 14, thereby releasing the fixation of the first rotating rod 10 and the second rotating rod 11. The second step is to start the drive motor 5, which drives the wave generator 6 to rotate. When the wave generator 6 rotates, its elliptical structure forces the flexible wheel 4 to undergo elastic deformation. The teeth at the long axis of the flexible wheel 4 mesh with the fixed rigid wheel 3, while the teeth at the short axis disengage. The teeth in the middle area are in a "meshing" or "disengaging" state, and these areas move synchronously with the rotation of the wave generator 6. Since the rigid wheel 3 has 2 more teeth than the flexible wheel 4, when the wave generator 6 rotates one revolution, the flexible wheel 4 will rotate 2 teeth in the opposite direction relative to the rigid wheel 3, thus reducing the rotational speed. Third step: When the flexible wheel 4 rotates, it will drive the connecting rod 9 to rotate. The connecting rod 9 will drive the annular rotating block 8 to rotate within the annular rotating groove 7. The annular rotating block 8 will drive the driving gear 12 to rotate. The driving gear 12 will drive the transmission gear 13 to rotate through meshing with the transmission gear 13. The transmission gear 13 will drive the driven gear 14 to rotate through meshing with the driven gear 14. The transmission gear 13 and the driven gear 14 will drive the first rotating rod 10 and the second rotating rod 11 to rotate, respectively. Fourth step: When the first rotating rod 10 rotates, it will drive the winding drum 16 to rotate. When the winding drum 16 rotates, it will wind or unwind the connecting rope. At the same time, when the second rotating rod 11 rotates, it will assist in conveying the connecting rope. This way, the pressure generated when the connecting rope is pulled by the lifting clothes rack will act on the second rotating rod 11, thereby preventing the tension of the connecting rope from being entirely applied to the first rotating rod 10 and the winding drum 16 for a long time, which would affect its use. Step 5: After the clothes rack is adjusted, the drive cylinder 18 can be started. The drive cylinder 18 drives the piston rod 19 to rise, and the piston rod 19 drives the fixed block 20 to rise. The fixed block 20 drives the toothed 15 to rise, and the toothed 15 meshes with the transmission gear 13 and the driven gear 14, and fixes the first rotating rod 10, the second rotating rod 11 and the winding drum 16, so that they cannot rotate and fix the connecting rope and the clothes rack.

[0018] Example 2: The technical solutions in this example that differ from Example 1 include: The lifting assembly includes a drive cylinder 18, which is fixedly connected to the bottom wall of the mounting cavity 2. A piston rod 19 is movably connected to the output end of the drive cylinder 18. The top end of the piston rod 19 extends outside the drive cylinder 18 and is fixedly connected to a fixing block 20. The fixing block 20 is L-shaped, and its upper surface and recesses are provided with teeth 15. When the drive cylinder 18 is activated, it drives the piston rod 19 to rise and fall, which in turn drives the fixing block 20 to rise and fall, and the fixing block 20 drives the teeth 15 to rise and fall. Two fixing rings 21 are fixedly installed on the inner wall of the rigid wheel 3. The teeth of the rigid wheel 3 are located between the two fixing rings 21, and the flexible wheel 4 is sleeved between the two fixing rings 21. The outer wall of the flexible wheel 4 is provided with teeth that mesh with the teeth inside the rigid wheel 3. A concave rotating wheel 22 is rotatably connected to the through hole 17 via a bearing, and the through hole 17 and the concave rotating wheel... 22 is positioned above the second rotating rod 11. When the connecting rope passes through the through hole 17, it will abut against the concave rotating wheel 22. The concave rotating wheel 22 assists in the movement of the connecting rope by rotating, thereby avoiding the connection rope from being affected by friction. The cross-sections of the annular rotating groove 7 and the annular rotating block 8 are both L-shaped. One end of the annular rotating block 8 extends outside the rigid wheel 3. The connecting rod 9 is fixedly connected to the inner wall of the annular rotating block 8 located outside the rigid wheel 3. The driving gear 12 is fixedly sleeved on the outer wall of the annular rotating block 8 located outside the rigid wheel 3. Under the limitation of the annular rotating groove 7, the annular rotating block 8 can only rotate in its original position. The tooth pattern 15 is arranged parallel to the transmission gear 13 and the driven gear 14, and the tooth pattern 15 meshes with the transmission gear 13 and the driven gear 14. The tooth pattern 15 will mesh with the transmission gear 13 and the driven gear 14 to fix them. The drive motor 5 and the wave generator 6 are both sleeved inside the rigid wheel 3.

[0019] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A miniaturized clothes drying rack lifting motor integrated transmission module based on harmonic gears, comprising a mounting base (1), wherein the mounting base (1) has an internal mounting cavity (2), characterized in that, A rigid wheel (3) is fixedly installed inside the mounting cavity (2). A flexible wheel (4) is provided inside the rigid wheel (3). A drive motor (5) is fixedly installed on the inner wall of the mounting cavity (2). A wave generator (6) is fixedly installed at the output end of the drive motor (5) through a coupling. The wave generator (6) is sleeved inside the flexible wheel (4). An annular rotating groove (7) is opened on the outer wall of the rigid wheel (3). An annular rotating block (8) is rotatably connected in the annular rotating groove (7). A connecting rod (9) is fixedly connected on the annular rotating block (8). The connecting rod (9) is fixedly connected to the flexible wheel (4). A first bearing is rotatably connected inside the mounting cavity (2). Rotating rod (10) and second rotating rod (11), the annular rotating block (8) is fixedly sleeved with a driving gear (12), the first rotating rod (10) is fixedly sleeved with a transmission gear (13), the second rotating rod (11) is fixedly sleeved with a driven gear (14), the transmission gear (13) meshes with the driving gear (12) and the driven gear (14), the bottom cavity wall of the mounting cavity (2) is fixedly installed with a lifting assembly, the upper end of the lifting assembly is provided with teeth (15), the first rotating rod (10) is fixedly sleeved with a winding drum (16), and the upper cavity wall of the mounting cavity (2) is provided with a through hole (17).

2. The miniaturized clothes drying rack lifting motor integrated transmission module based on harmonic gears according to claim 1, characterized in that: The lifting assembly includes a drive cylinder (18), which is fixedly connected to the bottom cavity wall of the mounting cavity (2). The output end of the drive cylinder (18) is movably connected to a piston rod (19). The top end of the piston rod (19) extends to the outside of the drive cylinder (18) and is fixedly connected to a fixing block (20). The fixing block (20) is L-shaped, and the upper surface and recess of the fixing block (20) are provided with teeth (15).

3. The miniaturized clothes drying rack lifting motor integrated transmission module based on harmonic gears according to claim 1, characterized in that: Two fixed rings (21) are fixedly installed on the inner wall of the rigid wheel (3). The teeth of the rigid wheel (3) are arranged between the two fixed rings (21), and the flexible wheel (4) is sleeved between the two fixed rings (21). The outer wall of the flexible wheel (4) is provided with teeth that mesh with the teeth inside the rigid wheel (3).

4. The miniaturized clothes drying rack lifting motor integrated transmission module based on harmonic gears according to claim 1, characterized in that: A concave rotating wheel (22) is rotatably connected to the through hole (17) via a bearing, and the through hole (17) and the concave rotating wheel (22) are positioned above the second rotating rod (11).

5. The miniaturized clothes drying rack lifting motor integrated transmission module based on harmonic gears according to claim 1, characterized in that: The cross-sections of the annular rotating groove (7) and the annular rotating block (8) are both L-shaped. One end of the annular rotating block (8) extends to the outside of the rigid wheel (3). The connecting rod (9) is fixedly connected to the inner wall of the annular rotating block (8) located outside the rigid wheel (3). The driving gear (12) is fixedly sleeved on the outer wall of the annular rotating block (8) located outside the rigid wheel (3).

6. The miniaturized clothes drying rack lifting motor integrated transmission module based on harmonic gears according to claim 1, characterized in that: The teeth (15) are arranged in parallel with the transmission gear (13) and the driven gear (14), and the teeth (15) mesh with the transmission gear (13) and the driven gear (14).

7. The miniaturized clothes drying rack lifting motor integrated transmission module based on harmonic gears according to claim 1, characterized in that: The drive motor (5) and wave generator (6) are both housed inside the rigid wheel (3).

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