Buffering transmission structure of lifting motor of clothes airing machine

Abstract

The invention relates to the technical field of clothes airing machines, in particular to a clothes airing machine lifting motor buffering transmission structure which comprises a shell, a buffering assembly is arranged in the shell, a transmission assembly is arranged at the bottom of the shell, a control assembly is arranged on the surface of the buffering assembly, the buffering assembly comprises an L-shaped plate, and the L-shaped plate is fixedly connected to the inner wall of the bottom of the shell. A motor is fixedly connected to the outer wall of the L-shaped plate, the output end of the motor is fixedly connected with an output bevel gear, a through hole is formed in the side wall of the other side of the L-shaped plate, through the synergistic effect of the buffering assembly and the control assembly, the double buffering and impact counteracting functions are achieved, the frosted face between the rubber ring and the fixing plate is matched with the 1 cm distance design, and the service life of the rubber ring is prolonged. The rotating shaft can be driven to move through the reverse pushing air cylinder and the extrusion air cylinder, then the transmission bevel gear is driven to be separated from the output bevel gear, the motor separated from the rotating shaft is not affected by impact when the rotating shaft is impacted, the deformation risk of the motor and the rotating shaft can be greatly reduced, and the service life of the clothes airing machine is remarkably prolonged.

Description

Technical Field

[0001] This invention relates to the field of clothes drying rack technology, specifically to the buffer transmission structure of the lifting motor of a clothes drying rack. Background Technology

[0002] An electric clothes drying rack is a household appliance used for drying clothes. It consists of a main drying rack, clothes rod, suspension bridge, and hardware accessories. Driven by a motor, it can achieve remote or intelligent control of raising and lowering the clothes rod. The buffer transmission is a core transmission subsystem used to suppress the impact of raising and lowering, absorb inertia, reduce noise, and improve the smoothness of operation. It is commonly found in electric clothes drying racks and achieves buffering through mechanical structure, electronic control strategy, or a combination of both to adapt to different scenarios and cost requirements.

[0003] Existing clothes drying racks protect their internal transmission components by incorporating a buffer transmission assembly to prevent impact when the clothes rack is loaded with heavy objects. However, the buffer transmission assembly can only mitigate the damage caused by the impact, but it cannot eliminate the impact damage. When an impact occurs, the motor and main shaft in the clothes drying rack are damaged and deformed, which leads to a rapid reduction in the lifespan of the clothes drying rack. Furthermore, after long-term use, the precision of the clothes rack components decreases, making the clothes rack prone to automatically shifting downwards or tilting. Summary of the Invention

[0004] To address the problems in the prior art, this invention provides a buffer transmission structure for the lifting motor of a clothes drying rack.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a buffer transmission structure for a clothes drying rack lifting motor, including a housing, a buffer component is provided inside the housing, a transmission component is provided at the bottom of the housing, and a control component is provided on the surface of the buffer component; The buffer assembly includes an L-shaped plate, which is fixedly connected to the bottom inner wall of the outer casing. A motor is fixedly connected to the outer wall of the L-shaped plate, and an output bevel gear is fixedly connected to the output end of the motor. A through hole is opened on the other side wall of the L-shaped plate, and a rotating shaft is rotatably connected inside the through hole. A fixing plate is fixedly connected to the bottom inner wall of the outer casing, and an insertion hole is opened on the side wall of the fixing plate. The rotating shaft is inserted into the insertion hole, and a rubber ring is fixedly sleeved on the surface of the rotating shaft. Output gears are fixedly connected to both ends of the rotating shaft. A snap-fit ​​ring groove is opened on the surface of both ends of the rotating shaft, and a pressing plate is rotatably snapped into the snap-fit ​​ring groove. Limit holes are opened at both ends of the pressing plate, and a transmission bevel gear is fixedly sleeved on the surface of the rotating shaft.

[0006] Specifically, the transmission bevel gear and the output bevel gear mesh at a right angle, and the rubber ring is located between the fixed plate and the transmission bevel gear.

[0007] Specifically, there is a 1cm gap between the rubber ring and the fixing plate, and the sidewalls of the rubber ring and the fixing plate that are close to each other are both made of frosted material.

[0008] Specifically, the transmission assembly includes two fixed seats, which are fixedly connected to the bottom inner wall of the housing. A rotating hole is provided at the center of each fixed seat, and two rotating grooves are provided on the side wall of each fixed seat. A round shaft is rotatably connected inside the rotating grooves. A transmission gear and a rotating cylinder are fixedly sleeved on the surface of the round shaft. A steel cable is wound around the surface of the rotating cylinder. Four support frames are fixedly connected to the lower end of the inner side wall of the housing. Two fixed frames are fixedly connected to the inner side wall of the housing by bolts. The rotating cylinder is snapped between the support frames and the fixed frames. Two wire passages are provided at the bottom of the housing. A retaining ring is fixedly sleeved on the surface of the round shaft.

[0009] Specifically, the four fixing rings are arranged in the same direction on the two extrusion plates, and the distance between the fixing rings and the extrusion plates is 1 cm.

[0010] Specifically, the control component includes two thrust cylinders and a fixed ring groove. The thrust cylinders are fixedly connected to the side wall of the L-shaped plate. A movable plate is fixedly connected to the output end of the thrust cylinders. Two extrusion cylinders are fixedly connected to the other side of the movable plate. A circular hole is opened at the center of the movable plate. A fixed retaining ring is fixedly sleeved inside the circular hole. The fixed ring groove is opened on the surface of the rotating shaft. The fixed retaining ring is engaged inside the fixed ring groove.

[0011] Specifically, the extrusion cylinder is fixedly connected to the surface of the fixed base at one end of the outer shell, and the extrusion cylinder and the reverse thrust cylinder are symmetrically arranged on both sides of the moving plate.

[0012] The beneficial effects of this invention are: (1) The clothes drying machine lifting motor buffer transmission structure of the present invention achieves double buffering and impact cancellation function through the synergistic effect of buffer component and control component. The frosted surface between the rubber ring and the fixed plate is designed with a 1cm gap. The reverse thrust cylinder and the extrusion cylinder can drive the rotating shaft to move, thereby driving the transmission bevel gear and the output bevel gear to separate. When the rotating shaft is impacted, the motor separated from the rotating shaft is not affected by the impact, which can greatly reduce the risk of deformation of the motor and the rotating shaft and significantly extend the service life of the clothes drying machine.

[0013] (2) The clothes drying machine lifting motor buffer transmission structure of the present invention solves the problem of automatic downward movement or tilting caused by the decrease in the precision of the components after long-term use of the clothes drying machine through the precise limiting of the transmission components and the locking function of the control components. The rotating drum ensures the stability during transmission through the bidirectional snap-fit ​​design of the support frame and the fixed frame, and avoids the steel cable from winding and shifting. When the clothes drying machine stops running, the control components can drive the extrusion plate to snap into the fixed ring. At the same time, the extrusion cylinder pushes the moving plate to drive the rubber ring to squeeze the fixed plate, realizing the double locking of the rotating shaft and the round shaft, effectively preventing the clothes rod from shifting due to the gap between the components or the action of gravity, and ensuring the operating accuracy and safety of the clothes drying machine. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 A schematic diagram of the buffer transmission structure of the lifting motor of the clothes drying rack provided by the present invention; Figure 2 A cross-sectional schematic diagram of the buffer transmission structure of the lifting motor of the clothes drying rack provided by the present invention; Figure 3 A schematic diagram of the outer shell structure of the buffer transmission structure for the lifting motor of the clothes drying rack provided by the present invention; Figure 4 A schematic diagram of the buffer component of the buffer transmission structure of the lifting motor of the clothes drying rack provided by the present invention; Figure 5 A schematic diagram of the transmission component of the buffer transmission structure for the lifting motor of the clothes drying rack provided by the present invention; Figure 6 This is a partial cross-sectional schematic diagram of the buffer transmission structure of the lifting motor of the clothes drying rack provided by the present invention; Figure 7 This is a schematic diagram of the rotating shaft structure of the lifting motor buffer transmission structure of the clothes drying rack provided by the present invention.

[0016] In the diagram: 1. Outer shell; 2. Buffer assembly; 21. L-shaped plate; 22. Motor; 23. Output bevel gear; 24. Through hole; 25. Rotating shaft; 26. Fixing plate; 27. Insertion hole; 28. Rubber ring; 29. ​​Output gear; 210. Snap ring groove; 211. Extrusion plate; 212. Limiting hole; 213. Transmission bevel gear; 3. Transmission assembly; 31. Fixing base; 32. Rotary hole; 33. Rotary groove; 34. Round shaft; 35. Transmission gear; 36. Rotary cylinder; 37. Steel cable; 38. Support frame; 39. Fixing frame; 310. Cable passage; 311. Fixing ring; 4. Control assembly; 41. Reverse thrust cylinder; 42. Extrusion cylinder; 43. Moving plate; 44. Round hole; 45. Fixing snap ring; 46. Fixing ring groove. Detailed Implementation

[0017] 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.

[0018] Please see Figures 1 to 7 The present invention provides the following technical solutions: Example 1: A clothes drying rack lifting motor buffer transmission structure includes a housing 1, a buffer component 2 is provided inside the housing 1, a transmission component 3 is provided at the bottom of the housing 1, and a control component 4 is provided on the surface of the buffer component 2; The buffer assembly 2 includes an L-shaped plate 21, which is fixedly connected to the bottom inner wall of the outer casing 1. A motor 22 is fixedly connected to the outer wall of the L-shaped plate 21. An output bevel gear 23 is fixedly connected to the output end of the motor 22. A through hole 24 is opened on the other side wall of the L-shaped plate 21. A rotating shaft 25 is rotatably connected inside the through hole 24. A fixing plate 26 is fixedly connected to the bottom inner wall of the outer casing 1. An insertion hole 27 is opened on the side wall of the fixing plate 26. The rotating shaft 25 is inserted into the insertion hole 27. A rubber ring 28 is fixedly sleeved on the surface of the rotating shaft 25. Output gears 29 are fixedly connected to both ends of the rotating shaft 25. A snap ring groove 210 is opened on the surface of both ends of the rotating shaft 25. A pressing plate 211 is rotatably snapped inside the snap ring groove 210. Limiting holes 212 are opened at both ends of the pressing plate 211. A transmission bevel gear 213 is fixedly sleeved on the surface of the rotating shaft 25.

[0019] The transmission bevel gear 213 meshes with the output bevel gear 23 at a right angle. The rubber ring 28 is located between the fixed plate 26 and the transmission bevel gear 213, ensuring that the torque of the motor 22 is efficiently transmitted to the rotating shaft 25. At the same time, the position and layout of the rubber ring 28 provides a structural basis for subsequent shock absorption and vibration isolation, avoiding interference between the buffer component and the transmission meshing component.

[0020] A 1cm gap is provided between the rubber ring 28 and the fixing plate 26. The sidewalls of the rubber ring 28 and the fixing plate 26 that are close to each other are both made of frosted surface. The 1cm gap provides buffer deformation space for the rubber ring 28 to avoid ineffective friction in the initial state. The frosted surface design can increase the frictional damping when the rubber ring 28 contacts the fixing plate 26. It can absorb impact energy through rubber elasticity and prevent the instantaneous movement of the rotating shaft 25 through friction, thus achieving a double buffering effect.

[0021] During use, when the clothes rack is lifted or lowered under the load of clothes or experiences slight bumps, the rotating shaft 25 tends to displace axially due to inertia or external force. At this time, a 1cm gap is reserved between the rubber ring 28 fixedly fitted on the surface of the rotating shaft 25 and the fixed plate 26, and the opposite sides of the two are designed with a frosted surface. The rubber ring 28 moves with the rotating shaft 25 and contacts the frosted surface of the fixed plate 26. The rubber ring 28 absorbs part of the impact energy through its own elastic deformation. At the same time, the friction between the frosted surfaces hinders the rapid displacement of the rotating shaft 25, reducing the impact force on the rotating shaft 25 and the meshing parts, and achieving initial buffering. At the same time, the control component 4 controls the rotating shaft 25 to drive the transmission bevel gear 213 to separate from the output bevel gear 23 of the motor 22. At this time, the torque generated by the impact only acts on the rotating shaft 25 and cannot be transmitted to the motor 22, avoiding bending deformation of the output shaft of the motor 22 due to instantaneous overload. Meanwhile, the rubber ring 28 is tightly pressed against the fixed plate 26, and the remaining impact energy is further offset by elastic compression and friction damping of the frosted surface, achieving maximum reduction of impact damage.

[0022] Example 2: The technical solution of this example, which differs from that of Example 1, includes: the transmission component 3 includes two fixed seats 31, which are fixedly connected to the bottom inner wall of the outer shell 1. A rotating hole 32 is provided at the center of the fixed seat 31. Two rotating grooves 33 are provided on the side wall of the fixed seat 31. A round shaft 34 is rotatably connected inside the rotating groove 33. A transmission gear 35 and a rotating cylinder 36 are fixedly sleeved on the surface of the round shaft 34. A steel cable 37 is wound around the surface of the rotating cylinder 36. Four support frames 38 are fixedly connected to the lower end of the inner side wall of the outer shell 1. Two fixed frames 39 are fixedly connected to the inner side wall of the outer shell 1 by bolts. The rotating cylinder 36 is snapped between the support frames 38 and the fixed frames 39. Two wire passages 310 are provided at the bottom of the outer shell 1. A fixing ring 311 is fixedly sleeved on the surface of the round shaft 34.

[0023] Four fixing rings 311 are located in the same direction on the two extrusion plates 211. The distance between the fixing rings 311 and the extrusion plates 211 is 1cm. The same direction layout ensures that the extrusion plates 211 can accurately align with the fixing rings 311. The 1cm distance shortens the locking action stroke without affecting the normal rotation of the transmission components, allowing the extrusion plates 211 to quickly engage with the fixing rings 311, improving the locking response efficiency and avoiding delayed displacement after the clothes rod stops.

[0024] In use, after the motor 22 starts, the output bevel gear 23 drives the transmission bevel gear 213 to rotate, which in turn drives the rotating shaft 25 to rotate. The output gears 29 at both ends of the rotating shaft 25 mesh with the transmission gears 35 on the surface of the round shaft 34, transmitting torque to the round shaft 34, causing the round shaft 34 to rotate stably in the rotating groove 33 of the fixed seat 31. The round shaft 34 synchronously drives the rotating drum 36 on its surface to rotate. The steel cable 37 wound around the surface of the rotating drum 36 is then wound up or released. The steel cable 37 passes through the cable opening 310 at the bottom of the outer casing 1 to connect to the clothes rod, realizing the raising or lowering action of the clothes rod. The rotating drum 36 rotates... During operation, the support frame 38 and the fixed frame 39 on the inner wall of the outer shell 1 are bidirectionally engaged. The support frame 38 lifts the rotating drum 36 from below, and the fixed frame 39 presses the rotating drum 36 from above after being fixed with bolts, restricting the axial movement and radial displacement of the rotating drum 36. This ensures that the steel cable 37 is evenly wound on the surface of the rotating drum 36, avoiding the lifting jam or tilting of the clothes rod caused by the steel cable 37 getting tangled or shifting. At the same time, the rotating groove 33 of the fixed seat 31 plays a radial limiting role on the round shaft 34, ensuring the meshing accuracy of the round shaft 34 with the output gear 29 and the transmission gear 35, and improving the transmission stability.

[0025] Example 3: The technical solution of this example, which differs from that of Example 2, includes the following: The control component 4 includes two reverse thrust cylinders 41 and a fixed ring groove 46. The reverse thrust cylinders 41 are fixedly connected to the side wall of the L-shaped plate 21. The output end of the reverse thrust cylinders 41 is fixedly connected to a moving plate 43. Two extrusion cylinders 42 are fixedly connected to the other side of the moving plate 43. A circular hole 44 is opened at the center of the moving plate 43. A fixed retaining ring 45 is fixedly sleeved inside the circular hole 44. The fixed ring groove 46 is opened on the surface of the rotating shaft 25. The fixed retaining ring 45 is engaged inside the fixed ring groove 46.

[0026] The extrusion cylinder 42 is fixedly connected to the surface of the fixed base 31 at one end of the housing 1. The extrusion cylinder 42 and the reverse thrust cylinder 41 are symmetrically arranged on both sides of the moving plate 43. The symmetrical layout balances the driving force of the two cylinders, preventing tilting or offset when the moving plate 43 drives the rotating shaft 25 to move. This ensures the straightness of the axial movement of the rotating shaft 25, guarantees the meshing accuracy of the bevel gear and the docking accuracy of the locking mechanism. At the same time, the fixed base 31 provides stable support for the extrusion cylinder 42, improving the operational reliability of the control components.

[0027] In use, when the clothes drying rack completes lifting and stops, the reverse thrust cylinder 41 and the compression cylinder 42 of the control component 4 start synchronously. The reverse thrust cylinder 41 pulls the moving plate 43 away from the fixed plate 26, and the compression cylinder 42 pushes the moving plate 43 towards the fixed plate 26. The two form opposing driving forces. Since the moving plate 43 is engaged in the fixed ring groove 46 of the rotating shaft 25 through the fixed retaining ring 45 in the round hole 44, the moving plate 43 can drive the rotating shaft 25 to move axially, so that the transmission bevel gear 213 and the output bevel gear 23 are separated, completing the impact isolation action. The control component 4 starts the locking program. First, the compression cylinder 42 pushes the moving plate 41. The moving plate 43 moves towards the fixed base 31, causing the rotating shaft 25 to move synchronously. This causes the extrusion plates 211 in the locking grooves 210 at both ends of the rotating shaft 25 to move closer to the fixing ring 311 of the round shaft 34, until the limiting holes 212 at both ends of the extrusion plates 211 engage with the protruding structure on the edge of the fixing ring 311, restricting the rotation of the round shaft 34. At the same time, the moving plate 43 causes the rubber ring 28 to be tightly pressed against the fixed plate 26. The static friction between the frosted surfaces fixes the axial position of the rotating shaft 25, preventing the rotating shaft 25 from moving due to gaps. When it is necessary to control the height of the clothes rack, the reverse thrust cylinder 41 and the extrusion cylinder 42 reset, the rotating shaft 25 moves back, the bevel gear re-meshes, and normal transmission is restored.

[0028] 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 clothes drying rack lifting motor buffer transmission structure, including a housing (1), a buffer component (2) is provided inside the housing (1), a transmission component (3) is provided at the bottom of the housing (1), and a control component (4) is provided on the surface of the buffer component (2). Its features are: The buffer assembly (2) includes an L-shaped plate (21), which is fixedly connected to the bottom inner wall of the outer shell (1). A motor (22) is fixedly connected to the outer wall of the L-shaped plate (21), and an output bevel gear (23) is fixedly connected to the output end of the motor (22). A through hole (24) is provided on the other side wall of the L-shaped plate (21), and a rotating shaft (25) is rotatably connected inside the through hole (24). A fixing plate (26) is fixedly connected to the bottom inner wall of the outer shell (1), and an insertion hole is provided on the side wall of the fixing plate (26). Hole (27), the rotating shaft (25) is inserted into the hole (27), a rubber ring (28) is fixedly sleeved on the surface of the rotating shaft (25), an output gear (29) is fixedly connected to both ends of the rotating shaft (25), a snap ring groove (210) is opened on both ends of the rotating shaft (25), a pressing plate (211) is rotatably snapped into the inside of the snap ring groove (210), a limit hole (212) is opened at both ends of the pressing plate (211), and a transmission bevel gear (213) is fixedly sleeved on the surface of the rotating shaft (25).

2. The clothes drying rack lifting motor buffer transmission structure according to claim 1, characterized in that: The transmission bevel gear (213) meshes with the output bevel gear (23) at a right angle, and the rubber ring (28) is located between the fixed plate (26) and the transmission bevel gear (213).

3. The clothes drying rack lifting motor buffer transmission structure according to claim 1, characterized in that: A 1cm gap is provided between the rubber ring (28) and the fixing plate (26), and the sidewalls of the rubber ring (28) and the fixing plate (26) that are close to each other are both made of frosted surface.

4. The clothes drying rack lifting motor buffer transmission structure according to claim 1, characterized in that: The transmission assembly (3) includes two fixed seats (31), which are fixedly connected to the bottom inner wall of the outer shell (1). A rotating hole (32) is provided at the center of the fixed seat (31). Two rotating grooves (33) are provided on the side wall of the fixed seat (31). A round shaft (34) is rotatably connected inside the rotating groove (33). A transmission gear (35) and a rotating cylinder (36) are fixedly sleeved on the surface of the round shaft (34). A steel cable (37) is wound on the surface of the rotating cylinder (36). Four support frames (38) are fixedly connected to the lower end of the inner side wall of the outer shell (1). Two fixed frames (39) are fixedly connected to the inner side wall of the outer shell (1) by bolts. The rotating cylinder (36) is snapped between the support frame (38) and the fixed frame (39). Two wire passages (310) are provided at the bottom of the outer shell (1). A fixing ring (311) is fixedly sleeved on the surface of the round shaft (34).

5. The clothes drying rack lifting motor buffer transmission structure according to claim 4, characterized in that: The four fixing rings (311) are arranged in the same direction on the two extrusion plates (211), and the distance between the fixing rings (311) and the extrusion plates (211) is 1cm.

6. The clothes drying rack lifting motor buffer transmission structure according to claim 1, characterized in that: The control component (4) includes two thrust cylinders (41) and a fixed ring groove (46). The thrust cylinders (41) are fixedly connected to the side wall of the L-shaped plate (21). The output end of the thrust cylinders (41) is fixedly connected to a moving plate (43). Two extrusion cylinders (42) are fixedly connected to the other side of the moving plate (43). A circular hole (44) is opened at the center of the moving plate (43). A fixed retaining ring (45) is fixedly sleeved inside the circular hole (44). The fixed ring groove (46) is opened on the surface of the rotating shaft (25). The fixed retaining ring (45) is engaged inside the fixed ring groove (46).

7. The clothes drying rack lifting motor buffer transmission structure according to claim 6, characterized in that: The extrusion cylinder (42) is fixedly connected to the surface of the fixed seat (31) at one end of the outer shell (1). The extrusion cylinder (42) and the reverse thrust cylinder (41) are symmetrically arranged on both sides of the moving plate (43).

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