A reversing transmission mechanism and a clothes drying apparatus

Abstract

The application discloses a reversing transmission mechanism and clothes drying equipment. The reversing transmission mechanism comprises a rotating shaft, an output part, a first one-way rotating part connected with the rotating shaft to rotate in a first direction, a first transmission part connected with the output part and the first one-way rotating part to transmit the rotation of the first one-way rotating part to the output part to drive the output part to rotate in the first direction, a second one-way rotating part connected with the rotating shaft to rotate in a second direction, and a second transmission part connected with the second one-way rotating part and the first transmission part to convert the rotation of the second one-way rotating part into rotation in the first direction and transmit the rotation to the output part through the first transmission part. The one-way action of the two one-way rotating parts can ensure that the output part rotates in the same direction when the rotating shaft rotates forward and reversely. In addition, the second transmission part transmits the rotation of the output part to the first rotating part, and changes the rotation of the second one-way rotating part into the first direction after the cooperation of the first rotating part, so that the first transmission part is fully utilized.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of household appliances, and particularly relates to a reversing transmission mechanism and a clothes drying device. BACKGROUND

[0002] A clothes dryer is a cleaning household appliance that uses heated air to evaporate and dry the moisture in washed clothes. The clothes dryer is popular because of its fast drying clothes. With the increasing market demand for clothes dryers, the drying effect of clothes is also increasingly required. Since the drying of clothes in a drum-type clothes dryer takes several hours, and the current clothes dryer mostly rotates in one direction, the clothes in the clothes dryer are severely entangled. The entanglement not only increases the degree of wear of the clothes, but also affects the drying effect of the clothes, resulting in clothes that are not dry or are over-dried. In order to solve the problem of entanglement, the drum of the clothes dryer is reversed. Since the air intake is constant when the drum is reversed, the fan needs to maintain a constant air supply regardless of the reversing. The fan of the current clothes dryer generally uses a curved blade turbine fan. This fan has the advantages of small size, large air volume, and high efficiency, but is not suitable for reverse operation. In order to solve the problem of entanglement of clothes, the current improved way is to drive the fan separately, but this scheme not only increases the cost of the equipment, but also increases the occupied space of the fan. Another solution to the problem of entanglement of clothes is a clothes dryer with a forward and reverse driving device, and a straight blade fan is used. Although the straight blade fan can dry clothes when it is reversed, the diameter of the straight blade fan is large, which not only occupies a lot of space, but also has a low drying efficiency.

[0003] A clothes dryer transmission system is disclosed in Chinese Patent No. CN107805929A, which includes a drum for holding clothes, a fan for supplying air to the drum, and a driving device for driving the drum. The driving device is connected to the fan and drives the fan to rotate. A reversing transmission mechanism is connected in series between the driving device and the fan. The reversing transmission mechanism allows the fan to rotate in the same direction as the driving device when the driving device is reversed.

[0004] The transmission system in the above scheme uses a reversing transmission mechanism between the driving device and the fan. When the driving device drives the drum to rotate forward and reverse, the fan is always controlled to rotate in one direction by the reversing transmission mechanism. However, the transmission mechanism is complex and needs to be realized by electronic control. In addition, two shafts need to be provided, which makes the structure of the transmission mechanism not concentrated.

[0005] In view of the above technical defects, the present application is proposed. SUMMARY

[0006] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art and provide a reversing transmission mechanism with simple structure, compact layout, and the output part always rotating in one direction.

[0007] To solve the above technical problems, the basic idea of the technical solution of the present application is:

[0008] A reversing transmission mechanism, comprising,

[0009] a rotating shaft;

[0010] an output part in transmission connection with the rotating shaft;

[0011] a first one-way rotating part connected with the rotating shaft and used for rotating together with the rotating shaft in a first direction;

[0012] a first transmission part connected with the output part and the first one-way rotating part and used for transmitting the rotation of the first one-way rotating part to the output part to drive the output part to rotate in the first direction;

[0013] a second one-way rotating part connected with the rotating shaft and used for rotating together with the rotating shaft in a second direction opposite to the first direction;

[0014] a second transmission part connected with the second one-way rotating part and the first transmission part and used for converting the rotation of the second one-way rotating part into rotation in the first direction in cooperation with the first transmission part and transmitting the rotation to the output part through the first transmission part to drive the output part to rotate in the first direction.

[0015] By adopting the above scheme, the one-way rotation of the two one-way rotating parts ensures that the output part rotates in the same direction no matter the rotating shaft rotates in the positive direction or the reverse direction. In addition, the second transmission part transmits the rotation of the output part to the first rotating part, and after cooperation with the first rotating part, the rotation of the second one-way rotating part is changed to the first direction, and the output part is driven to rotate in the first direction by the first rotating part, which fully utilizes the first transmission part and realizes that the rotating direction of the output part does not change no matter the rotating shaft rotates in the first direction or the second direction. Furthermore, the two one-way rotating parts are installed on the same rotating shaft, which makes the structure of the transmission mechanism compact and ensures the rotation force of the two one-way rotating parts.

[0016] Further, the first one-way rotating part comprises,

[0017] a first one-way bearing sleeved on the rotating shaft and used for rotating together with the rotating shaft in the first direction when the rotating shaft rotates in the first direction, and the inner ring body of the first one-way bearing idles when the rotating shaft rotates in the second direction;

[0018] the second one-way rotating part comprises,

[0019] a second one-way bearing sleeved on the rotating shaft and used for rotating together with the rotating shaft in the second direction when the rotating shaft rotates in the second direction, and the inner ring body of the second one-way bearing idles when the rotating shaft rotates in the first direction.

[0020] By adopting the above scheme, the output part rotates along the same direction when the rotating shaft rotates along different directions and drives different one-way bearings, and then different one-way bearings drive the shell in different transmission modes to achieve the purpose of rotating the output part along the same direction.

[0021] Further, the first transmission part comprises a driving gear sleeved on the outer ring body of the first one-way bearing.

[0022] The driving gear is fixedly connected with the output part and is used to drive the output part to rotate along the first direction.

[0023] Preferably, the output part is a belt pulley structure.

[0024] Further, the output part is sleeved on the rotating shaft and is pivotally connected with the rotating shaft.

[0025] By adopting the above scheme, the driving gear drives the output part to rotate, and the rotating shaft is not in direct contact with the output part, so that the output part does not rotate with the rotating shaft, facilitating the transmission connection between the rotating shaft and the output part, and further achieving the purpose of reversing between the rotating shaft and the output part of the transmission mechanism through transmission.

[0026] Further, the second transmission part comprises,

[0027] a first gear sleeved on the outer ring body of the second one-way bearing and used to rotate along the second direction with the second one-way bearing;

[0028] a second gear arranged outside the first gear and externally meshingly connected with the first gear;

[0029] a third gear externally meshingly connected with the second gear and the driving gear.

[0030] Further, the third gear comprises,

[0031] an input gear externally meshingly connected with the second gear;

[0032] an output gear fixedly connected with the input gear, having the same rotating direction as the input gear, and externally meshingly connected with the driving gear.

[0033] By adopting the above scheme, when the rotating shaft rotates in the second direction, the second one-way bearing drives the first gear to rotate in the second direction, and then drives the second gear to rotate in the first direction opposite to the second direction, so as to realize the reversing of the rotating shaft; the input gear of the third gear is externally meshed with the second gear, so that the rotating directions of the third gear and the second gear are opposite, i.e. the second direction, the output gear of the third gear is driven by the input gear to rotate in the second direction and is externally meshed with the driving gear, so that the driving gear connected with the output portion rotates in the first direction, and then drives the output portion to rotate in the first direction, thereby realizing the reversing between the rotating shaft and the output portion.

[0034] In addition, the second transmission portion transmits the rotation of the second one-way rotating portion to the driving gear, converts the output direction of the second transmission portion through the driving gear, and transmits the direction to the output portion, thereby fully utilizing the first transmission portion.

[0035] Further, the rotating shaft, the first transmission portion and the second transmission portion are arranged on the support portion, and the support portion is used for supporting the rotating shaft and the two transmission portions.

[0036] Preferably, the first transmission portion and the second transmission portion are located on the same side of the support portion.

[0037] Further, the limiting portion is arranged on the side of the first transmission portion and the second transmission portion away from the support portion, and is used for limiting the axial direction of the first transmission portion and the second transmission portion in cooperation with the support portion.

[0038] By adopting the above scheme, the limiting portion limits the axial direction of the first transmission portion and the second transmission portion in cooperation with the support portion, so as to ensure the stability of the positions and relative positions of the two transmission portions, and contribute to the stability of the structure of the whole reversing transmission mechanism.

[0039] Another object of the present application is to provide a clothes drying device with the above reversing transmission mechanism.

[0040] Further, the clothes drying device comprises,

[0041] a drum;

[0042] a fan connected with the output portion, and rotating in the same direction as the output portion, for blowing air into the drum;

[0043] a driving device connected with the rotating shaft and the drum, for driving the rotating shaft and the drum to rotate;

[0044] Preferably, the fan is connected with the output portion by a belt.

[0045] By adopting the above scheme, through the transmission of the reversing transmission mechanism, the driving device drives the fan to rotate in one direction all the time while driving the drum to rotate forward and reverse, so that the clothes in the drum are not entangled and wrinkled during the drying process, the reversing transmission mechanism provides the drum with one-way stable air volume, improves the drying uniformity and drying efficiency, saves the drying time, and reduces the energy consumption.

[0046] After adopting the above technical scheme, the present application has the following beneficial effects compared with the prior art.

[0047] 1. The two one-way rotating parts of the reversing transmission mechanism are installed on the same rotating shaft, so that the structure of the transmission mechanism is compact, and the rotating force of the two one-way rotating parts is ensured; in addition, through the reversing of the two one-way rotating parts, the rotating direction of the output part is ensured to be the same as or opposite to the rotating direction of the rotating shaft.

[0048] 2. The two one-way rotating parts are respectively connected with the output part through different transmission parts in different transmission modes, so that the rotating direction of the output part is the same as or opposite to the rotating direction of the rotating shaft.

[0049] 3. The second transmission part transmits the rotation of the second one-way rotating part to the driving gear, the output direction of the second transmission part is converted through the driving gear, and the converted direction is transmitted to the output part, so that the first transmission part is fully utilized, and the output part is ensured to rotate in the same direction.

[0050] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0051] The accompanying drawings, which are part of the present application, serve to provide a further understanding of the present application, the illustrative embodiments of the present application and their descriptions serve to explain the present application, but do not constitute an improper limitation on the present application. Obviously, the accompanying drawings in the following description are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor. In the drawings:

[0052] Figure 1 is a structural schematic view of the reversing transmission mechanism of the present application;

[0053] Figure 2 is a sectional structural schematic view of the reversing transmission mechanism of the present application;

[0054] Figure 3 is a structural schematic view of the drying equipment of the present application;

[0055] Figure 4 is another angle schematic view of the drying equipment of the present application.

[0056] In the figure: 1, reversing transmission mechanism; 11, first one-way bearing; 12, second one-way bearing; 13, rotating shaft; 14, support part; 15, output part; 16, driving gear; 17, second transmission part; 171, first gear; 172, second gear; 173, third gear; 1731, input gear; 1732, output gear; 18, boss; 191, first connecting piece; 192, second connecting piece; 2, clothes drying device; 21, roller; 22, fan; 23, driving device; 24, driving belt; 25, transmission belt; 26, air inlet; 27, air duct.

[0057] It should be noted that these drawings and written descriptions are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments will be described clearly and completely below with reference to the drawings of the embodiments of the present application. The following embodiments are used to illustrate the present application, but not to limit the scope of the present application.

[0059] In the description of the present application, it should be noted that the terms "upper", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0060] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0061] As Figure 1 and Figure 2As shown in the figure, the reversing transmission mechanism 1 of the present application comprises a rotating shaft 13, an output part 15 connected with the rotating shaft 13, a first one-way rotating part connected with the rotating shaft 13 and rotating with the rotating shaft 13 in a first direction, a first transmission part connected with the output part 15 and the first one-way rotating part and at least used for transmitting the rotation of the first one-way rotating part to the output part 15 to drive the output part 15 to rotate in the first direction, a second one-way rotating part connected with the rotating shaft 13 and rotating with the rotating shaft 13 in a second direction, and a second transmission part 17 connected with the second one-way rotating part and the first transmission part and used for converting the rotation of the second one-way rotating part into rotation in the first direction in cooperation with the first transmission part and transmitting the rotation to the output part 15 through the first transmission part to drive the output part 15 to rotate in the first direction.

[0062] The reversing transmission mechanism 1 of the present application can ensure that the output part 15 rotates in the same direction no matter the rotating shaft 13 rotates in the positive direction or the reverse direction through the one-way rotation of the two one-way rotating parts. In addition, the two one-way rotating parts are installed on the same rotating shaft 13, so that the structure of the transmission mechanism is compact and the rotation force of the two one-way rotating parts can be ensured. Furthermore, the second transmission part 17 transmits the rotation to the first rotating part, and the rotation of the second one-way rotating part is changed into rotation in the first direction after cooperation with the first rotating part, and the output part 15 is driven to rotate in the first direction through the first rotating part, so that the first transmission part is fully utilized, and the rotating direction of the output part 15 does not change no matter the rotating shaft 13 rotates in the first direction or the second direction.

[0063] As shown in the figure, Figure 2 The first one-way rotating part comprises a first one-way bearing 11 sleeved on the rotating shaft 13 and used for rotating in the first direction with the rotating shaft 13 as a whole when the rotating shaft 13 rotates in the first direction, and the inner ring body of the first one-way bearing 11 idles when the rotating shaft 13 rotates in the second direction. The second one-way rotating part comprises a second one-way bearing 12 sleeved on the rotating shaft 13 and used for rotating in the second direction with the rotating shaft 13 as a whole when the rotating shaft 13 rotates in the second direction, and the inner ring body of the second one-way bearing 12 idles when the rotating shaft 13 rotates in the first direction. The first direction and the second direction are opposite to each other. The first one-way bearing 11 and the second one-way bearing 12 are arranged in opposite directions.

[0064] As an embodiment, the first direction is the clockwise direction, and the second direction is the counterclockwise direction, or the first direction is the counterclockwise direction, and the second direction is the clockwise direction.

[0065] As an embodiment, the first one-way bearing 11 and the second one-way bearing 12 are the same type of one-way bearing.

[0066] As shown in the figure, Figure 1 andFigure 2 As shown in the drawings, the first transmission part comprises a driving gear 16 sleeved on the outer ring body of the first one-way bearing 11; the driving gear 16 is fixedly connected with the output part 15, and is used for driving the output part 15 to rotate in the first direction.

[0067] As shown in the drawings, the output part 15 is a belt pulley structure, and one side of the belt pulley is attached to the side wall of the driving gear 16. Figure 2

[0068] The output part 15 is sleeved on the rotating shaft 13, and a gap is formed between the sleeving position and the outer periphery of the rotating shaft 13. The output part 15 is pivotally connected with the rotating shaft 13, so that the rotating shaft 13 cannot directly drive the belt pulley to rotate.

[0069] As shown in the drawings, the second transmission part 17 comprises a first gear 171 sleeved on the outer ring body of the second one-way bearing 12, a second gear 172 arranged outside the first gear 171 and externally meshingly connected with the first gear 171, and a third gear 173 externally meshingly connected with the second gear 172 and the driving gear 16. Figure 1 The second one-way bearing 12 is arranged close to the first one-way bearing 11. The first gear 171 and the second one-way bearing 12 are spaced apart from the driving gear 16 and the first one-way bearing 11, so as to prevent the first one-way bearing 11 and the second one-way bearing 12 from being connected and driven, and prevent the first gear 171 and the driving gear 16 from being connected and driven.

[0070] The second gear 172 is meshingly connected with the first gear 171 and the third gear 173 respectively, and the first gear 171 is not in contact with the third gear 173.

[0071] As shown in the drawings, the third gear 173 comprises an input gear 1731 externally meshingly connected with the second gear 172, and an output gear 1732 fixedly connected with the input gear 1731 and externally meshingly connected with the driving gear 16.

[0072] Figure 1 That is, the third gear 173 is a two-section structure. The tooth width of the input gear 1731 matches the tooth width of the second gear 172, so as to facilitate meshing. The tooth width of the output gear 1732 matches the tooth width of the driving gear 16, so as to facilitate meshing. The input gear 1731 and the output gear 1732 are coaxially arranged. Preferably, the input gear 1731 and the output gear 1732 are an integral structure.

[0073] That is, the third gear 173 is a two-section structure. The tooth width of the input gear 1731 matches the tooth width of the second gear 172, so as to facilitate meshing. The tooth width of the output gear 1732 matches the tooth width of the driving gear 16, so as to facilitate meshing. The input gear 1731 and the output gear 1732 are coaxially arranged. Preferably, the input gear 1731 and the output gear 1732 are an integral structure.

[0074] ​​The diameter of the second gear 172 is greater than the diameters of the first gear 171 and the input gear 1731, so that the second gear 172 is engaged with the first gear 171 and the input gear 1731, respectively.

[0075] The diameter of the input gear 1731 is smaller than the diameter of the output gear 1732, and the diameter of the first gear 171 is smaller than the diameter of the driving gear 16, so that the output gear 1732 is engaged with the driving gear 16 while the input gear 1731 is not in contact with the first gear 171.

[0076] As shown in Figs. Figure 1 and Figure 2 The reversing transmission mechanism 1 further comprises a support part 14, the rotating shaft 13, the first transmission part and the second transmission part 17 are arranged on the support part 14, and the support part 14 is used for supporting the rotating shaft 13 and the two transmission parts.

[0077] As shown in Figs. Figure 1 and Figure 2 The first transmission part and the second transmission part 17 are located on the same side of the support part 14.

[0078] The support part 14 is a plate structure, one end of the rotating shaft 13 penetrates the plate structure, the first one-way bearing 11 and the second one-way bearing 12 are sleeved on the rotating shaft 13 on one side of the plate structure, the output part 15 is sleeved on the outside of the rotating shaft 13 on the other side of the plate structure, penetrates the plate structure and is fixedly connected with the driving gear 16, and the part of the output part 15 penetrating the plate structure has a gap with the plate structure and is not in contact with the plate structure.

[0079] The first one-way bearing 11 is disposed near the support portion 14, and the second one-way bearing 12 is disposed on the side of the first one-way bearing 11 away from the support portion 14. A gap is left between the first one-way bearing 11 and the drive gear 16 and the support portion 14 to prevent the first one-way bearing 11 and the drive gear 16 from contacting and rubbing against the support portion 14, thus hindering the rotation of the first one-way bearing 11 and the drive gear 16. The position of the second gear 172 matches the position of the first gear 171. A boss 18 is provided on the side of the second gear 172 facing the support portion 14. The height of the boss 18 is not less than the shaft length of the drive gear 16, which facilitates the external meshing connection between the second gear 172 and the first gear 171. The diameter of the boss 18 is less than the diameter of the second gear 172, so that the boss 18 does not contact the drive gear 16. Preferably, the boss 18 and the support portion 14 are an integral structure. The output gear 1732 is positioned to match the drive gear 16, is located close to the support portion 14, and has a gap between it and the support portion 14. The input gear 1731 is positioned to match the second gear 172, and is located on the side of the output gear 1732 away from the support portion 14. The tooth widths of the first gear 171, the second gear 172, and the input gear 1731 are matched, and the shaft lengths of the drive gear 16, the output gear 1732, and the boss 18 are matched.

[0080] The second gear 172 is mounted on the support part 14 via the first connector 191. One end of the first connector 191 passes through the second gear 172 and the boss 18 along the central axis of the second gear 172 and is fixedly connected to the support part 14. The third gear 173 is mounted on the support part 14 via the second connector 192. One end of the second connector 192 passes through the input gear 1731 and the output gear 1732 along the central axis of the third gear 173 and is fixedly connected to the support part 14.

[0081] The reversing transmission mechanism 1 of the present invention further includes a limiting part, which is disposed on the side of the first transmission part and the second transmission part 17 away from the support part 14, and is used to cooperate with the support part 14 to limit the first transmission part and the second transmission part 17 in the axial direction.

[0082] like Figure 1 As shown, a column is provided on the side of the support portion 14 where the first transmission portion and the second transmission portion 17 are located. The column is positioned to avoid the positions of the gears and is distributed around all the gears. The limiting portion is a plate-shaped structure that covers the column, at least completely covering the side of the two transmission portions away from the support portion 14. The other ends of the first connecting member 191 and the second connecting member 192 are fixedly connected to the limiting portion, and the end of the rotating shaft 13 near the first gear 171 is rotatably connected to the limiting portion.

[0083] Further, the part of the limiting part connected with the first connecting piece 191, the second connecting piece 192 and the rotating shaft 13 extends to the side of the supporting part 14 to form a hollow structure, the hollow structure is used for accommodating the first connecting piece 191, the second connecting piece 192 and the rotating shaft 13 respectively, and the end of each protruding edge is close to the side of the second gear 172, the input gear 1731 and the first gear 171 facing the limiting part. This scheme can maximize the limiting of the two transmission parts and does not hinder the rotation of the gears.

[0084] The supporting part 14 is provided with four mounting columns penetrating through both sides of the supporting part 14 and distributed around the limiting part, so as to facilitate the mounting of the reversing transmission mechanism 1 on the related equipment. Preferably, the side of the mounting column away from the two transmission parts is the mounting end.

[0085] Working principle: as Figure 1 shown, when the rotating shaft 13 rotates in the first direction, the first one-way bearing 11 rotates in the first direction, the second one-way bearing 12 idles, and then drives the driving gear 16 to rotate in the first direction, and the driving gear 16 drives the output part 15 to rotate in the first direction; when the rotating shaft 13 rotates in the second direction, the first one-way bearing 11 idles, the second one-way bearing 12 rotates in the second direction, and then drives the first gear 171 to rotate in the second direction, because the first gear 171 is externally meshed with the second gear 172, so that the second gear 172 rotates in the first direction, and then drives the input gear 1731 externally meshed with the second gear 172 to rotate in the second direction, the input gear 1731 drives the output gear 1732 to rotate in the second direction, because the output gear 1732 is externally meshed with the driving gear 16, so that the driving gear 16 rotates in the first direction, and the driving gear 16 drives the output part 15 to rotate in the first direction, and realizes the reversing between the rotating shaft 13 and the output part 15.

[0086] As Figure 3 and Figure 4 shown, another object of the present application is to provide a drying equipment 2 with the above-mentioned reversing transmission mechanism 1.

[0087] The drying equipment 2 comprises a drum 21; a fan 22 connected with the output part 15, the rotating direction of the fan 22 is the same as that of the output part 15, and the fan 22 is used for sending air into the drum 21; a driving device 23 connected with the rotating shaft 13 and the drum 21, and used for driving the rotating shaft 13 and the drum 21 to rotate.

[0088] The fan 22, the driving device 23 and the reversing transmission mechanism 1 are all arranged at the rear part of the shell of the drying equipment 2, and the rear part of the shell is provided with an air inlet 26 and an air duct 27 for ventilating the drum 21 through the fan 22.

[0089] As an embodiment, asFigure 3 and Figure 4 As shown in the figure, the fan 22 is connected with the output part 15 through a transmission belt 25. The driving device 23 is connected with the roller 21 through a driving belt 24, which is sleeved on the outer periphery of the roller 21 to drive the roller 21 to rotate. The driving device 23 is a motor.

[0090] By using the above scheme, the driving device 23 drives the roller 21 to rotate in the forward direction and the reverse direction at the same time, and the fan 22 is always rotated in one direction through the transmission of the reversing transmission mechanism 1. Therefore, the clothes in the roller 21 are not entangled and wrinkled during the drying process. The reversing transmission mechanism 1 provides the roller 21 with a stable air flow in one direction, improves the drying uniformity and efficiency, saves the drying time, and reduces the energy consumption.

[0091] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above-mentioned technical content without departing from the scope of the present application. The above-mentioned embodiments can be further combined or replaced, but as long as it does not deviate from the technical solution of the present application, any simple modification, equivalent change and modification of the above-mentioned embodiments according to the technical essence of the present application are still within the scope of the present application.

Claims

1. A reversing transmission mechanism, characterized by, Comprising, a rotating shaft; an output part, in transmission connection with the rotating shaft; the output part is a pulley structure, sleeved on the rotating shaft, and has a gap between the sleeving position and the outer periphery of the rotating shaft; the output part is pivotally connected with the rotating shaft, so that the rotating shaft cannot directly drive the pulley to rotate; a first one-way rotating part, connected with the rotating shaft, for rotating together with the rotating shaft in a first direction; a first transmission part, connected with the output part and the first one-way rotating part, at least for transmitting the rotation of the first one-way rotating part to the output part to drive the output part to rotate in the first direction; the first transmission part comprises a driving gear, sleeved on the outer ring body of the first one-way bearing; the driving gear is fixedly connected with the output part, for driving the output part to rotate in the first direction; the output part is sleeved on the rotating shaft and is pivotally connected with the rotating shaft; a second one-way rotating part, connected with the rotating shaft, for rotating together with the rotating shaft in a second direction, the second direction being opposite to the first direction; a second transmission part, connected with the second one-way rotating part and the first transmission part, for cooperating with the first transmission part to convert the rotation of the second one-way rotating part into rotation in the first direction, and transmitting the rotation to the output part through the first transmission part to drive the output part to rotate in the first direction; the second transmission part comprises a first gear, sleeved on the outer ring body of the second one-way bearing, for rotating together with the second one-way bearing in the second direction; a second gear, arranged outside the first gear and in external meshing connection with the first gear; a third gear, in external meshing connection with the second gear and the driving gear; the third gear is a two-section structure, comprising an input gear and an output gear; the input gear is in external meshing connection with the second gear; the output gear is in external meshing connection with the driving gear; the driving gear is fixedly connected with the output part.

2. A commutating drive mechanism according to claim 1, characterised in that, the first one-way rotating part comprises, a first one-way bearing, sleeved on the rotating shaft, for rotating together with the rotating shaft in the first direction when the rotating shaft rotates in the first direction, and for the inner ring body of the first one-way bearing to idle when the rotating shaft rotates in the second direction; the second one-way rotating part comprises, a second one-way bearing, sleeved on the rotating shaft, for rotating together with the rotating shaft in the second direction when the rotating shaft rotates in the second direction, and for the inner ring body of the second one-way bearing to idle when the rotating shaft rotates in the first direction.

3. A commutating drive mechanism according to claim 2, wherein further comprising a support part, the rotating shaft, the first transmission part and the second transmission part being arranged on the support part, the support part being used for supporting the rotating shaft and the two transmission parts.

4. A commutating drive mechanism according to claim 3, wherein the first transmission part and the second transmission part are located on the same side of the support part.

5. A commutating drive mechanism according to claim 4, wherein further comprising a limiting part, arranged on the side of the first transmission part and the second transmission part away from the support part, for limiting the axial direction of the first transmission part and the second transmission part in cooperation with the support part.

6. A clothes drying apparatus, characterized by, having a commutation transmission mechanism as claimed in any one of claims 1-5.

7. A clothes drying apparatus as claimed in claim 6, characterized in that comprising, a drum; a fan, connected with the output part, the rotating direction being the same as that of the output part, for blowing air into the drum; a driving device, connected with the rotating shaft and the drum, for driving the rotating shaft and the drum to rotate.

8. A clothes drying apparatus as claimed in claim 7, characterized in that the fan is connected with the output part by a belt.

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