Driving device and clothes dryer

Abstract

The present application belongs to the technical field of clothes drying machines, and particularly relates to a driving device and a clothes drying machine. The present application aims to solve the problems of complex structure, large space occupation and unstable fan transmission of the driving device, thereby affecting the use effect. The present application provides a driving device, which comprises a driving assembly and a reversing transmission assembly. The driving assembly has a first output shaft for driving the rotation of a drying cylinder and a second output shaft for driving the rotation of a fan. The first output shaft and the second output shaft are coaxially arranged. The reversing transmission assembly comprises a gear transmission unit and at least two one-way bearings. The at least two one-way bearings comprise a first one-way bearing and a second one-way bearing. The first one-way bearing is connected between the first output shaft and the gear transmission unit. The gear transmission unit is used for outputting the torque output by the first output shaft in the opposite direction of the torque. The present application has simple structure and reduces the occupied space while ensuring the drying effect.

Description

Technical Field

[0001] This invention belongs to the field of dryer technology, specifically relating to a drive device and a dryer. Background Technology

[0002] A clothes dryer is a household appliance that uses electric heating to instantly evaporate and dry the moisture in washed clothes. Therefore, clothes dryers are popular because of their fast drying function. Internally, it features an air circulation channel containing a fan and a heating and dehumidification system. The fan circulates air within the channel, while the heating and dehumidification system heats and dehumidifies the entering air before sending it into the drying drum to dry the clothes. The heated air comes into contact with the wet clothes, removing moisture, and then circulates again in the air circulation channel to be heated, dehumidified, and recirculated.

[0003] In existing technology, clothes dryers mainly include a drying drum, a fan, a heating device, and a drive motor. Clothes to be dried are placed in the drying drum, and the drive motor drives both the drying drum and the fan. The fan blows air into the drying drum, and the heating device heats the air to create hot air, which then dries the clothes. Existing clothes dryers generally use two types of drive motors: the first uses two separate drive motors, one driving the drying drum in both forward and reverse directions, and the other driving the fan in a continuously forward direction; the second uses a single drive motor to drive both the drying drum and the fan simultaneously.

[0004] However, the two drive motors in the first method need to be set up separately, which can easily lead to a large space occupation and a sharp increase in cost; in the second method, the fan and drive motor are set up with opposite axes, which makes the whole structure more complex, resulting in unstable fan transmission and more complicated control. Summary of the Invention

[0005] To address the aforementioned problems in the prior art, namely, the need for two separate drive motors in a dryer, and the issue that when only one drive motor is present, the fan and drive motor are off-axis, resulting in complex structure, large space occupation, and unstable fan transmission, thus affecting the performance, this invention provides a drive device. The drive device includes a drive assembly and a reversing transmission assembly. The drive assembly has a first output shaft for driving the drying drum to rotate and a second output shaft for driving the fan to rotate, with the first and second output shafts coaxially arranged.

[0006] The reversing transmission assembly includes a gear transmission unit and at least two one-way bearings. The at least two one-way bearings include a first one-way bearing and a second one-way bearing. The first one-way bearing is connected between the first output shaft and the gear transmission unit. The gear transmission unit is used to output the torque output by the first output shaft in a rotational direction opposite to the torque.

[0007] The second one-way bearing is connected between the first output shaft and the second output shaft to transmit torque between the first output shaft and the second output shaft. The first one-way bearing and the second one-way bearing are rotatable in opposite directions so that when the first output shaft rotates in different directions, the second output shaft always rotates in the same direction.

[0008] In the preferred embodiment of the above-mentioned drive device, both the first one-way bearing and the second one-way bearing are coaxially connected to the first output shaft, and the first one-way bearing and the second one-way bearing are at different axial positions on the first output shaft.

[0009] In the preferred embodiment of the above-mentioned drive device, the reversing transmission assembly further includes a bushing, one end of which is coaxially connected to the second output shaft, and the other end of which is connected to the outer ring of the second one-way bearing.

[0010] The inner ring of the second one-way bearing is fitted onto the end of the first output shaft.

[0011] In the preferred embodiment of the above-mentioned drive device, the inner ring of the first one-way bearing is sleeved on the side wall of the first output shaft, and the outer ring of the first one-way bearing is connected to the gear transmission unit.

[0012] In the preferred embodiment of the above-mentioned drive device, the gear transmission unit includes a first gear, a second gear, and a gear ring. The first gear is coaxially arranged with the second output shaft, and the outer ring of the first one-way bearing is connected to the gear ring.

[0013] The gear ring has internal teeth and is coaxially connected to the fan.

[0014] The second gear meshes between the internal teeth of the first gear and the gear ring.

[0015] In the preferred embodiment of the above-mentioned drive device, the gear ring includes a main body and an extension connected to the circumferential edge of the main body. The main body is a rotating body, the extension extends toward the second output shaft, and the internal teeth are disposed on the inner edge of the extension.

[0016] In the preferred embodiment of the above-mentioned drive device, the second gear is fixed on the drive device.

[0017] In the preferred embodiment of the above-mentioned driving device, the driving assembly further includes a driving motor, which is used to drive the drying cylinder to rotate, and the driving motor is connected to the first output shaft.

[0018] In the preferred embodiment of the above-mentioned drive device, the first output shaft and the drying cylinder are driven by a belt.

[0019] The present invention also provides a clothes dryer, including a housing, a drying drum, a fan, and the aforementioned driving device. The drying drum, the fan, and the driving device are all disposed inside the housing, and the driving device drives the drying drum and the fan to rotate.

[0020] Those skilled in the art will understand that the drive device and dryer provided by the present invention include a housing, a drying drum, a fan, and a drive device. The drying drum, fan, and drive device are all disposed within the housing, and the drive device drives the drying drum and fan to rotate. The drive device includes a drive assembly and a reversing transmission assembly. The drive assembly has a first output shaft for driving the drying drum to rotate and a second output shaft for driving the fan to rotate. The first and second output shafts are coaxially arranged. The reversing transmission assembly includes a gear transmission unit and at least two one-way bearings. The at least two one-way bearings include a first one-way bearing and a second one-way bearing. The first one-way bearing is connected between the first output shaft and the gear transmission unit. The gear transmission unit is used to output the torque output by the first output shaft in a rotational direction opposite to the torque. The second one-way bearing is connected between the first and second output shafts and is used to transmit torque between the first and second output shafts. The first and second one-way bearings have opposite rotational directions so that when the first output shaft rotates in different directions, the second output shaft always rotates in the same direction.

[0021] Through the above configuration, a single drive component can simultaneously drive both the drying drum and the fan. When the drive component rotates the drying drum in two directions (forward or reverse), the reversing transmission component ensures that the fan always rotates in the same direction (forward). This forward or reverse rotation of the drive component effectively avoids uneven drying and tangling caused by unidirectional rotation, preventing clothes from becoming tangled or wrinkled. The reversing transmission component also ensures the fan provides a stable unidirectional airflow to the drying drum. Furthermore, the coaxial design of the drive component and the fan reduces energy transfer losses and ensures stable fan transmission. This ensures that the fan airflow remains consistent throughout the forward and reverse rotation of the drying drum. While maintaining drying efficiency, this design simplifies the overall drive unit structure, reduces energy consumption, space requirements, and costs, and improves overall performance, resulting in superior drying results and efficiency. Attached Figure Description

[0022] A preferred embodiment of the garment processing apparatus of the present invention will now be described with reference to the accompanying drawings. The drawings are as follows:

[0023] Figure 1 This is a schematic diagram of the structure of the driving device provided by the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of the drive component driving the fan in the drive device provided by the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the clothes dryer provided by the present invention;

[0026] Figure 4 This is a schematic diagram of the gear transmission unit in the drive device provided by the present invention.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1-Driver components;

[0029] 10-Drive unit;

[0030] 20 - Shell;

[0031] 30-Drying drum;

[0032] 40- Fan;

[0033] 50-Belt;

[0034] 11 - First output shaft;

[0035] 12 - Second output shaft;

[0036] 2-Reversing drive assembly;

[0037] 21-First one-way bearing;

[0038] 22-Second one-way bearing;

[0039] 23-Gear transmission unit;

[0040] 231 - First Gear;

[0041] 232 - Second gear;

[0042] 233-Gear ring;

[0043] 2331-Main Body;

[0044] 2332 - Extension;

[0045] 24-Sleeve;

[0046] 100-dryer. Detailed Implementation

[0047] First, those skilled in the art should understand that these embodiments are merely for explaining the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0048] Secondly, it should be noted that in the description of this invention, terms such as "inner" and "outer" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0049] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0050] Existing clothes dryers mainly consist of a drying drum, a fan, a heating element, and a drive motor. Clothes to be dried are placed in the drying drum, and the drive motor drives both the drum and the fan. The fan blows air into the drum, and the heating element heats the air to create hot air, which then dries the clothes. However, existing dryers generally use two types of drive motors: the first requires two separate motors, one driving the drum in both forward and reverse directions, and the other driving the fan in a continuous forward rotation. However, this separate setup results in a larger footprint and significantly increased costs. The second type uses a single motor to drive both the drum and the fan simultaneously, but the fan and motor are mounted on opposite axes, making the structure more complex and leading to unstable fan transmission and more complex control.

[0051] To address the aforementioned issues, the inventors of this invention provide a drive unit and a dryer. By employing a single drive assembly, both the drying drum and the fan can be driven simultaneously. When the drive assembly rotates the drying drum in two directions (forward or reverse), a reversing transmission component ensures that the fan always rotates in the same direction (forward). This forward or reverse rotation of the drive assembly effectively avoids uneven drying and tangling caused by unidirectional rotation, preventing clothes from becoming tangled or wrinkled. The reversing transmission component also ensures the fan provides a stable, unidirectional airflow to the drying drum. Furthermore, the coaxial design of the drive assembly and the fan reduces energy transfer losses and ensures stable fan transmission. This ensures that the fan airflow remains consistent throughout the forward and reverse rotation of the drying drum, maintaining optimal drying performance while simplifying the overall drive unit structure, reducing energy consumption, space requirements, and costs, and ultimately achieving better drying results and efficiency.

[0052] The preferred technical solutions of the drive device and dryer of the present invention are described below with reference to the accompanying drawings.

[0053] Figure 1 This is a schematic diagram of the drive device provided by the present invention. Figure 2 This is a schematic diagram of the structure of the drive component driving the fan in the drive device provided by the present invention. Figure 3 This is a structural schematic diagram of the dryer provided by the present invention. Figure 4 This is a schematic diagram of the gear transmission unit in the drive device provided by the present invention.

[0054] like Figures 1-4 As shown in the figure, an embodiment of the driving device of the present invention provides a driving device 10, which includes a driving component 1 and a reversing transmission component 2. The driving component 1 has a first output shaft 11 for driving the drying cylinder 30 to rotate and a second output shaft 12 for driving the fan 40 to rotate. The first output shaft 11 and the second output shaft 12 are coaxially arranged.

[0055] The reversing transmission assembly 2 includes a gear transmission unit 23 and at least two one-way bearings. The at least two one-way bearings include a first one-way bearing 21 and a second one-way bearing 22. The first one-way bearing 21 is connected between the first output shaft 11 and the gear transmission unit 23. The gear transmission unit 23 is used to output the torque output by the first output shaft 11 in a rotational direction opposite to the torque.

[0056] The second one-way bearing 22 is connected between the first output shaft 11 and the second output shaft 12 and is used to transmit torque between the first output shaft 11 and the second output shaft 12. The first one-way bearing 21 and the second one-way bearing 22 are rotatable in opposite directions so that when the first output shaft 11 rotates in different directions, the second output shaft 12 always rotates in the same direction.

[0057] It is understandable that the drive component 1 can not only drive the drying drum 30 to rotate in two directions, but also drive the fan 40 to rotate in the same direction.

[0058] In other words, the drive assembly 1 drives the drying cylinder 30 to rotate in both directions via the first output shaft 11, and at the same time drives the fan 40 to rotate in the forward direction via the second output shaft 12.

[0059] In some examples, the first output shaft 11 and the second output shaft 12 are coaxially arranged. The second output shaft 12 of the drive assembly 1 is coaxially connected to the input shaft of the fan 40, which can be understood as the drive assembly 1 and the fan 40 being coaxially connected. The second output shaft 12 of the drive assembly 1 can be directly connected to the fan 40. Since the driving force generated by the drive assembly 1 acts directly on the fan 40, rather than being a secondary force transmitted (through a connecting mechanism), this minimizes energy transfer loss and ensures stable transmission of the fan 40. Moreover, the direct drive method makes it easier to change the rotation speed, thus facilitating the adjustment of the fan 40's rotation speed and ensuring stable airflow into the drying drum 30. Simultaneously, it reduces unnecessary transmission structures, saves space occupied by the drive device 10, makes control during the drive process more convenient, improves the usage effect, and achieves better drying effect and efficiency.

[0060] In the above embodiments, such as Figure 1 , Figure 3 As shown, when the drive assembly 1 drives the drying cylinder 30 to rotate in the forward direction, the first output shaft 11 rotates in the forward direction, and the first one-way bearing 21 rotates in the forward direction, thus transmitting no torque to the second output shaft 12. At this time, the second one-way bearing 22 drives the second output shaft 12 to rotate in the forward direction, thereby causing the fan 40 to rotate in the forward direction. When the drive assembly 1 drives the drying cylinder 30 to rotate in the reverse direction, the first output shaft 11 rotates in the reverse direction, and the gear transmission unit 23 drives the second output shaft 12 to rotate in the forward direction, thereby causing the fan 40 to rotate in the forward direction.

[0061] Understandably, when the drive assembly 1 drives the drying drum 30 to rotate forward or backward, the reversing transmission assembly 2 ensures that the fan 40 always rotates in one direction (forward). The forward or reverse rotation of the drive assembly 1 effectively avoids uneven drying and tangling caused by unidirectional rotation, preventing clothes from getting tangled or wrinkled in the drying drum 30. The reversing transmission assembly 2 ensures that the fan 40 provides a stable unidirectional airflow to the drying drum 30. Simultaneously, by using a single drive assembly 1 to drive the drying drum 30 in both forward and reverse rotations, the airflow of the fan 40 remains completely consistent throughout the rotation. This ensures optimal drying performance while simplifying the overall structure of the drive device 10, reducing energy consumption, space requirements, and costs, and improving overall performance, resulting in better drying results and efficiency.

[0062] In some possible implementations, the first one-way bearing 21 and the second one-way bearing 22 are both coaxially connected to the first output shaft 11, and the first one-way bearing 21 and the second one-way bearing 22 are at different axial positions on the first output shaft 11.

[0063] It is understandable that, such as Figure 1As shown, the first one-way bearing 21 is coaxially connected to the first output shaft 11 and is close to the drive assembly 1; the second one-way bearing 22 is coaxially connected to the first output shaft 11 and is close to the end of the first output shaft 11, as shown in the diagram. Figure 1 The second one-way bearing 22 is located to the right of the first one-way bearing 21.

[0064] In some examples, the first one-way bearing 21 and the second one-way bearing 22 have the same structure. When the first one-way bearing 21 transmits no torque to the second output shaft 12, the second one-way bearing 22 transmits torque to the second output shaft 12. When the second one-way bearing 22 transmits no torque to the second output shaft 12, the first one-way bearing 21 and the gear transmission unit 23 work together to transmit torque to the second output shaft 12. This ensures that while the drying cylinder 30 rotates in two directions, the fan 40 always rotates in the same direction.

[0065] In some possible implementations, such as Figure 1 As shown, the reversing transmission assembly 2 also includes a bushing 24, one end of which is coaxially connected to the second output shaft 12, and the other end of which is connected to the outer ring of the second one-way bearing 22.

[0066] The inner ring of the second one-way bearing 22 is fitted onto the end of the first output shaft 11.

[0067] It is understandable that, such as Figure 1 As shown, the inner ring of the second one-way bearing 22 is coaxially connected to the first output shaft 11, the outer ring of the second one-way bearing 22 is connected to the bushing 24, and one end of the bushing 24 is coaxially connected to the second output shaft 12.

[0068] In other words, the first output shaft 11 and the second output shaft 12 are coaxially connected by the bushing 24 to achieve torque transmission.

[0069] In some possible implementations, such as Figure 1 As shown, the inner ring of the first one-way bearing 21 is sleeved on the side wall of the first output shaft 11, and the outer ring of the first one-way bearing 21 is connected to the gear transmission unit 23.

[0070] In some examples, the gear transmission unit 23 is mounted on the first output shaft 11, and the gear transmission unit 23 and the first output shaft 11 transmit torque through the first one-way bearing 21. The gear transmission unit 23 is used to output the torque output by the first output shaft 11 in the opposite direction of rotation, so that the second output shaft 12 always rotates in the same direction.

[0071] In some possible implementations, such as Figure 1 , Figure 2 and Figure 4As shown, the gear transmission unit 23 includes a first gear 231, a second gear 232, and a gear ring 233. The first gear 231 is coaxially arranged with the second output shaft 12, and the outer ring of the first one-way bearing 21 is connected to the gear ring 233. The gear ring 233 has internal teeth and is coaxially connected with the fan 40.

[0072] like Figure 4 As shown, the second gear 232 meshes between the internal teeth of the first gear 231 and the gear ring 233.

[0073] It is understandable that while the internal teeth of the second gear 232 mesh with the gear ring 233, they also mesh with the first gear 231. This allows the rotation of the gear ring 233 to be transmitted to the first gear 231 via the second gear 232. The rotation of the first gear 231 drives the second output shaft 12 to rotate, ultimately causing the fan 40 to rotate.

[0074] In some examples, such as Figure 1 , Figure 3 As shown, when the drive assembly 1 drives the drying cylinder 30 to rotate in the forward direction, the first output shaft 11 rotates in the forward direction, causing the inner ring of the first one-way bearing 21 to rotate in the forward direction, and the outer ring of the first one-way bearing 21 to rotate in the reverse direction. The first one-way bearing 21 has no torque transmission to the second output shaft 12. At this time, the inner and outer rings of the second one-way bearing 22 are stuck, causing the second output shaft 12 to rotate in the forward direction, which in turn causes the fan 40 to rotate in the forward direction.

[0075] When the drive assembly 1 drives the drying cylinder 30 to rotate in the reverse direction, the first output shaft 11 rotates in the reverse direction, the inner and outer rings of the first one-way bearing 21 are stuck, which drives the gear ring 233 to rotate in the reverse direction. The rotation is transmitted to the first gear 231 through the second gear 232 meshing with the gear ring 233, so that the first gear 231 rotates in the forward direction. The first gear 231 is coaxially set with the second output shaft 12, thereby driving the second output shaft 12 to rotate in the forward direction, which in turn drives the fan 40 to rotate in the forward direction.

[0076] In some possible implementations, such as Figure 1 As shown, the gear ring 233 includes a main body 2331 and an extension 2332 connected to the circumferential edge of the main body 2331. The main body 2331 is a rotating body, and the extension 2332 extends toward the second output shaft 12. The internal teeth are disposed on the inner edge of the extension 2332.

[0077] It is understood that the main body 2331 is sleeved on the first output shaft 11, and the torque is transmitted between the main body 2331 and the first output shaft 11 through the first one-way bearing 21. The extension 2332 extends along the circumferential edge of the main body 2331 toward the second output shaft 12 and is coaxially arranged with the second output shaft 12. A portion of the axial end of the second gear 232 is located inside the extension 2332, and the internal teeth are arranged on the inner edge of the extension 2332 and mesh with the axial end of the second gear 232.

[0078] In other words, as the first output shaft 11 rotates, the torque of the first output shaft 11 is transmitted to the main body 2331 through the first one-way bearing 21. The main body 2331 is a rotating body, which in turn drives the extension 2332 to rotate. The internal teeth set on the inner edge of the extension 2332 rotate. Since the internal teeth mesh with the axial end of the second gear 232, the torque is transmitted to the second gear 232, which drives the second gear 232 to rotate. This drives the first gear 231 meshing with the second gear 232, and the torque is transmitted to the second output shaft 12 through the first gear 231. Finally, the torque is transmitted to the input shaft of the fan 40, which drives the fan 40 to rotate, thus completing the torque transmission.

[0079] In some possible implementations, such as Figure 1 As shown, the second gear 232 is fixed on the drive device 10.

[0080] It is understandable that the gear shaft of the second gear 232 is fixedly mounted on the bottom surface of the drive device 10.

[0081] In some examples, the gear shaft of the second gear 232 can be fixed by bolts or other fasteners, the specific methods of which will not be elaborated here.

[0082] In some possible implementations, such as Figure 3 As shown, the drive assembly 1 also includes a drive motor, which is used to drive the drying cylinder 30 to rotate. The drive motor is connected to the first output shaft 11.

[0083] Understandably, the drive motor can not only drive the drying drum 30 to rotate in both directions, but also drive the fan 40 to rotate in the same direction continuously. This achieves the goal of using a single drive motor to drive the drying drum 30 in both forward and reverse rotations, while ensuring that the airflow of the fan 40 remains constant throughout the forward and reverse rotations. This simplifies the structure of the entire drive unit 10, reduces energy consumption, minimizes space requirements, lowers costs, and improves performance, resulting in better drying results and efficiency.

[0084] In some possible implementations, such as Figure 3 As shown, the first output shaft 11 is driven by the drying cylinder 30 via a belt 50.

[0085] It is understandable that both the first output shaft 11 and the drying cylinder 30 are provided with toothed grooves, and the belt 50 is provided with teeth that cooperate with the toothed grooves. This cooperation can prevent the belt 50 from shifting.

[0086] The first output shaft 11, the drying cylinder 30, and the belt 50 rotate as a whole, and the belt 50 has a certain elasticity, so there will be no pulling of the belt 50 when changing direction.

[0087] The driving device provided in this embodiment of the invention includes a driving assembly and a reversing transmission assembly. The driving assembly has a first output shaft for driving the drying cylinder to rotate and a second output shaft for driving the fan to rotate, with the first and second output shafts coaxially arranged. The reversing transmission assembly includes a gear transmission unit and at least two one-way bearings, including a first one-way bearing and a second one-way bearing. The first one-way bearing is connected between the first output shaft and the gear transmission unit, which outputs the torque from the first output shaft in a rotational direction opposite to the torque. The second one-way bearing is connected between the first and second output shafts and transmits torque between them. The first and second one-way bearings have opposite rotational directions so that when the first output shaft rotates in different directions, the second output shaft always rotates in the same direction.

[0088] Through the above configuration, a single drive component can simultaneously drive both the drying drum and the fan. When the drive component rotates the drying drum in two directions (forward or reverse), the reversing transmission component ensures that the fan always rotates in the same direction (forward). This forward or reverse rotation of the drive component effectively avoids uneven drying and tangling caused by unidirectional rotation, preventing clothes from becoming tangled or wrinkled. The reversing transmission component also ensures the fan provides a stable unidirectional airflow to the drying drum. Furthermore, the coaxial design of the drive component and the fan reduces energy transfer losses and ensures stable fan transmission. This ensures that the fan airflow remains consistent throughout the forward and reverse rotation of the drying drum. While maintaining drying efficiency, this design simplifies the overall drive unit structure, reduces energy consumption, space requirements, and costs, and improves overall performance, resulting in superior drying results and efficiency.

[0089] The present invention also provides a clothes dryer 100, including a housing 20, a drying drum 30, a fan 40 and the aforementioned drive device 10. The drying drum 30, the fan 40 and the drive device 10 are all disposed inside the housing 20, and the drive device 10 drives the drying drum 30 and the fan 40 to rotate.

[0090] like Figure 3 As shown, the drive assembly can drive both the drying drum and the fan simultaneously.

[0091] The clothes dryer provided in this embodiment of the invention includes a housing, a drying drum, a fan, and a drive device. The drying drum, the fan, and the drive device are all disposed inside the housing, and the drive device drives the drying drum and the fan to rotate.

[0092] This dryer possesses all the technical effects of the above embodiments. Through the above-described configuration, a single drive component can simultaneously drive the drying drum and the fan. The coaxial design of the drive component and the fan reduces energy transmission loss, ensures stable fan transmission, and achieves that the fan airflow remains completely consistent during the forward and reverse rotation of the drying drum. While ensuring the drying effect, the entire drive device has a simple structure, reduces energy consumption, reduces space occupation, lowers costs, and improves usage, thereby achieving better drying effect and efficiency.

[0093] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A drive device characterized by comprising: The drive device includes a drive assembly and a reversing transmission assembly. The drive assembly has a first output shaft for driving the drying cylinder to rotate and a second output shaft for driving the fan to rotate. The first output shaft and the second output shaft are coaxially arranged. The reversing transmission assembly includes a gear transmission unit and at least two one-way bearings. The at least two one-way bearings include a first one-way bearing and a second one-way bearing. The first one-way bearing is connected between the first output shaft and the gear transmission unit. The gear transmission unit is used to output the torque output by the first output shaft in a rotational direction opposite to the torque. The second one-way bearing is connected between the first output shaft and the second output shaft and is used to transmit torque between the first output shaft and the second output shaft. The first one-way bearing and the second one-way bearing have opposite rotational directions so that when the first output shaft rotates in different directions, the second output shaft always rotates in the same direction. The reversing transmission assembly also includes a bushing, one end of which is coaxially connected to the second output shaft, and the other end of which is connected to the outer ring of the second one-way bearing; the inner ring of the second one-way bearing is sleeved on the end of the first output shaft; The gear transmission unit includes a first gear, a second gear, and a gear ring. The first gear is coaxially arranged with the second output shaft, and the outer ring of the first one-way bearing is connected to the gear ring. The gear ring has internal teeth and is coaxially connected to the fan; The second gear meshes between the internal teeth of the first gear and the gear ring, and the second gear is fixed to the drive device.

2. The drive apparatus according to claim 1, characterized by Both the first one-way bearing and the second one-way bearing are coaxially connected to the first output shaft, and the first one-way bearing and the second one-way bearing are at different axial positions on the first output shaft.

3. The drive apparatus according to claim 2, characterized by The inner ring of the first one-way bearing is fitted onto the side wall of the first output shaft, and the outer ring of the first one-way bearing is connected to the gear transmission unit.

4. The drive apparatus according to claim 3, characterized by The gear ring includes a main body and an extension connected to the circumferential edge of the main body. The main body is a rotating body, and the extension extends toward the second output shaft. The internal teeth are disposed on the inner edge of the extension.

5. The drive apparatus according to claim 1, characterized by The drive assembly also includes a drive motor for driving the drying drum to rotate, and the drive motor is connected to the first output shaft.

6. Drive arrangement according to any of claims 1-5, characterized in that The first output shaft is driven by a belt to the drying cylinder.

7. A clothes dryer characterized by The device includes a housing, a drying cylinder, a fan, and a driving device as described in any one of claims 1-6, wherein the drying cylinder, the fan, and the driving device are all disposed within the housing, and the driving device drives the drying cylinder and the fan to rotate.

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