CN117071256A

CN117071256A - Clothes treatment equipment

Info

Publication number: CN117071256A
Application number: CN202210498064.3A
Authority: CN
Inventors: 濮玲华; 马焉
Original assignee: Wuxi Little Swan Electric Co Ltd
Current assignee: Wuxi Little Swan Electric Co Ltd
Priority date: 2022-05-09
Filing date: 2022-05-09
Publication date: 2023-11-17

Abstract

The application relates to the technical field of clothes treatment, and provides clothes treatment equipment, which comprises an input shaft, a first output shaft, a second output shaft, a central wheel, a main planetary gear train and an auxiliary planetary gear train, wherein a transmission gear structure is formed on the outer peripheral surface of the first end of the input shaft, the central wheel is connected with the second end of the first output shaft, and outer gear teeth are formed on the outer peripheral surface of the central wheel. The main planetary gear train comprises a main planetary gear, a main planetary carrier and a main gear ring, the transmission gear structure and the main gear ring are meshed with the main planetary gear, a first transition gear is formed at the position of the main planetary carrier, which faces to the outer gear teeth, the first transition gear is meshed with the outer gear teeth, the auxiliary planetary gear train comprises an auxiliary planetary gear, an auxiliary planetary carrier and an auxiliary gear ring, the auxiliary gear ring is connected with the second end of the second output shaft, and the outer gear teeth and the auxiliary gear ring are meshed with the auxiliary planetary gear. The first output shaft and the second output shaft are capable of counter rotation.

Description

Clothes treatment equipment

Technical Field

The application relates to the technical field of clothes treatment, in particular to clothes treatment equipment.

Background

The clothes treatment equipment realizes the transmission connection among the pulsator, the inner barrel and the power motor through the transmission device. In the related art, the opposite rotation of the pulsator and the inner tub is caused by the opposite rotation of the inner tub shaft due to the water flow reaction when the pulsator rotates, and is not a bi-directional rotation caused by power driving. In the related art, the power drive is adopted to realize bidirectional rotation, a set of clutch operating mechanism of double ratchet wheels and double pawls and a double-stroke tractor are required to be matched to realize bidirectional washing and dehydration conversion, and the structure is complex.

Disclosure of Invention

In view of the above, it is desirable for embodiments of the present application to provide a laundry treating apparatus in which the first output shaft and the second output shaft can be rotated in opposite directions.

In order to achieve the above object, an embodiment of the present application provides a laundry treating apparatus comprising:

an input shaft, wherein a transmission tooth structure is formed on the outer peripheral surface of a first end of the input shaft;

a first output shaft;

the second output shaft is sleeved outside the first output shaft;

the central wheel is connected with the second end of the first output shaft, and outer gear teeth are formed on the outer peripheral surface of the central wheel;

the main planetary gear train comprises a main planetary gear, a main planetary carrier and a main gear ring, the transmission gear structure and the main gear ring are meshed with the main planetary gear, a first transition gear is formed at the position of the main planetary carrier, facing the outer gear teeth, and the first transition gear is meshed with the outer gear teeth;

the auxiliary planetary gear train comprises auxiliary planetary gears, an auxiliary planet carrier and an auxiliary gear ring, wherein the auxiliary gear ring is connected with the second end of the second output shaft, and the external gear teeth and the auxiliary gear ring are meshed with the auxiliary planetary gears.

In some embodiments, one of the outer peripheral surface of the second end of the first output shaft and the inner peripheral surface of the center wheel is provided with a first key, and the other of the outer peripheral surface of the second end of the first output shaft and the inner peripheral surface of the center wheel is provided with a first key groove, the first key being engaged with the first key groove.

In some embodiments, the secondary ring gear is provided with a second key around one of an inner peripheral surface of the second output shaft and an outer peripheral surface of the second end of the second output shaft, and the secondary ring gear is provided with a second key groove around the other of the inner peripheral surface of the second output shaft and the outer peripheral surface of the second end of the second output shaft, and the second inner key groove and the second outer key are engaged.

In some embodiments, the outer gear teeth include a first tooth structure and a second tooth structure extending continuously in an up-down direction, the first transition gear is meshed with the first tooth structure, and the pinion gear is meshed with the second tooth structure.

In some embodiments, the laundry treatment apparatus includes a clutch mechanism and a clutch shaft sleeved outside the input shaft, the clutch mechanism being capable of switching the clutch shaft between a coupled state and a uncoupled state.

In the combined state, the clutch shaft and the input shaft are combined into a whole; in the disengaged state, the clutch shaft and the input shaft are disengaged.

In some embodiments, the clutch shaft comprises a shaft cylinder and a connecting disc, the shaft cylinder is sleeved outside the input shaft, the connecting disc surrounds the periphery of the shaft cylinder, the main ring gear is located on one side of the connecting disc, and the connecting disc is connected with the main ring gear.

In some embodiments, the main planet carrier comprises a main board, a main cover board and a main wheel shaft, the main cover board is arranged opposite to the main board, the main wheel shaft is arranged between the main cover board and the main board and is connected with the main cover board and the main board, the main planet gear rotatably penetrates through the main wheel shaft, an inner hole is formed in the main cover board, a first transition gear is formed on the circumferential surface of the inner hole, and the outer wheel teeth are arranged in the inner hole.

In some embodiments, the auxiliary planet carrier is located at one side of the main gear ring, one of the auxiliary planet carrier and the main gear ring is formed with a lock pin, the other of the auxiliary planet carrier and the main gear ring is formed with a pin groove, and the lock pin is in interference fit with the pin groove.

In some embodiments, the auxiliary planet carrier comprises an auxiliary plate, an auxiliary cover plate and an auxiliary wheel shaft, wherein the auxiliary cover plate is positioned on one side of the auxiliary plate, the auxiliary wheel shaft is positioned between the auxiliary cover plate and the auxiliary plate and is connected with the auxiliary cover plate and the auxiliary plate, and the auxiliary planet gear is rotatably arranged on the auxiliary wheel shaft in a penetrating mode.

In some embodiments, the first end of the secondary ring gear is formed with a second transition gear encircling the outer circumference of the second end of the second output shaft, one of the inner circumferential surface of the second transition gear and the outer circumferential surface of the second end of the second output shaft is formed with a third key groove, and the other one of the inner circumferential surface of the second transition gear and the outer circumferential surface of the second end of the second output shaft is formed with a third key which is engaged with the third key groove.

In some embodiments, the clothes treating apparatus includes a brake disc and a brake band surrounding an outer circumferential surface of the brake disc, and the brake disc is interference riveted with the clutch shaft, or the clutch shaft is in bolt connection with the brake disc.

According to the clothes treatment equipment provided by the embodiment of the application, the input shaft drives the main planetary gear to rotate through the transmission gear structure, the main planetary gear drives the first transition gear to rotate, the first transition gear drives the central wheel to rotate, the central wheel is connected with the first output shaft, and the first output shaft is further driven to rotate, so that the first output shaft can drive the stirrer of the clothes treatment equipment to rotate; meanwhile, the rotation of the center wheel drives the auxiliary planetary gear to reversely rotate, the auxiliary planetary gear drives the auxiliary gear ring to rotate, the auxiliary gear ring is connected with the second output shaft, and then the second output shaft is driven to reversely rotate, so that the second output shaft can drive the inner barrel of the clothes treatment equipment to reversely rotate. Thus, the stirrer and the inner barrel rotate in opposite directions in the washing process. On one hand, the power of the input shaft is transmitted to the first output shaft through the main planetary gear and the central wheel, the first output shaft drives the stirrer to rotate positively, and on the other hand, the power of the input shaft drives the auxiliary gear ring to rotate reversely through the main planetary gear, the central wheel and the auxiliary planetary gear, and finally the second output shaft is driven to rotate reversely, so that the inner barrel is driven to rotate reversely. By means of the design, the first output shaft and the second output shaft are reversely rotated through the transmission device, the transmission device is simple in structure, and installation space is saved.

Drawings

FIG. 1 is a schematic diagram of a transmission device according to an embodiment of the present application;

FIG. 2 is a schematic diagram of the primary planetary gear system of FIG. 1;

fig. 3 is a schematic diagram of the secondary planetary gear train in fig. 1.

Description of the reference numerals

An input shaft 10; a drive tooth structure 11; a clutch shaft 20; a shaft cylinder 21; a land 22; a first output shaft 30; a second output shaft 40; a center wheel 50; a first tooth structure 51; a second tooth structure 52; a main planetary gear train 60; a main planetary gear 61; a main carrier 62; a first transition gear 620; a main board 621; a main cover 622; a main wheel shaft 623; a main ring gear 63; a secondary planetary gear train 70; a pinion planetary gear 71; a secondary planet carrier 72; a sub-plate 721; a sub-cover plate 722; a sub-axle 723; a sub-ring gear 73; a second transition gear 730; brake disc 80; a rolling bearing 90; bushing 100.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments of the present application and the technical features of the embodiments may be combined with each other, and the detailed description in the specific embodiments should be interpreted as an explanation of the gist of the present application and should not be construed as unduly limiting the present application.

The application will be described in further detail with reference to the accompanying drawings and specific examples. The description of "first," "second," etc. in embodiments of the application is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly including at least one feature. In the description of the embodiments of the present application, the meaning of "plurality" is at least two, that is, includes two and more, for example, two or three, etc., unless specifically defined otherwise. The orientation or positional relationship in the description of the embodiments of the present application are for convenience of description and simplification of the description, and are not indicative or implying that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Referring to fig. 1, an embodiment of the present application provides a laundry treating apparatus including an input shaft 10, a first output shaft 30, a second output shaft 40, a center wheel 50, a main planetary gear train 60, and a sub planetary gear train 70. The outer peripheral surface of the first end of the input shaft 10 is formed with a driving gear structure 11. The second output shaft 40 is sleeved outside the first output shaft 30. Specifically, the first output shaft 30 may be located on a first side of the input shaft 10. The center wheel 50 is connected to the second end of the first output shaft 30, and an outer gear tooth is formed on the outer circumferential surface of the center wheel 50.

Laundry treatment apparatuses include, but are not limited to, washing machines, washing and drying machines, and the like. The laundry treating apparatus further includes an inner tub connected to the first end of the second output shaft, and a pulsator in the inner tub, the pulsator being connected to the first end of the first output shaft. The pulsator is used for agitating laundry and/or water current movement in the inner tub.

The clothes treatment equipment comprises a power motor and a belt pulley, wherein the power motor is in transmission connection with the belt pulley through a belt. A second end of the input shaft 10 may be used in connection with a pulley. The power motor drives the pulley to rotate through the belt, and the pulley transmits power to the input shaft 10 to drive the input shaft 10 to rotate. The pulley is keyed, such as flat or splined, to a second end of the input shaft 10. In this way, the second end of the input shaft 10 can be quickly secured to the pulley.

The center wheel 50 is fixed to the first output shaft 30, and the connection manner of the center wheel 50 and the first output shaft 30 is not limited, and in some embodiments, one of the outer circumferential surface of the second end of the first output shaft 30 and the inner circumferential surface of the center wheel 50 is provided with a first key, and the other one of the outer circumferential surface of the second end of the first output shaft 30 and the inner circumferential surface of the center wheel 50 is provided with a first key groove, and the first key groove are engaged. In one embodiment, the outer peripheral surface of the second end of the first output shaft 30 is provided with a first key, and the inner peripheral surface of the center wheel 50 is provided with a first key groove. In another embodiment, the outer peripheral surface of the second end of the first output shaft 30 is provided with a first key groove, and the inner peripheral surface of the center wheel 50 is provided with a first key. The keyed connection of the center wheel 50 to the first output shaft 30 is achieved by the first key and first keyway engagement such that the center wheel 50 maintains synchronous rotation with the first output shaft 30.

The center wheel 50 is connected to the first output shaft 30 by a keyed connection, such as a spline, in particular, the first key is a first spline, the first spline is a first spline groove, and the first spline groove and the first spline mesh to effect connection of the center wheel 50 to the second end of the first output shaft 30. It can be appreciated that the stress between the center wheel 50 and the first output shaft 30 connected by the spline is relatively uniform, the strength of the center wheel 50 and the strength of the first output shaft 30 are less weakened, larger load can be borne, and the center wheel is suitable for the working requirements of high centering precision requirement and large transmission torque of the first output shaft 30.

The main planetary gear train 60 includes a main planetary gear 61, a main carrier 62, and a main ring gear 63. The transmission gear structure 11 and the main gear ring 63 are both meshed with the main planetary gears 61, and a first transition gear 620 is formed at a position of the main planetary carrier 62 toward the center wheel 50, and the first transition gear 620 is meshed with the outer gear teeth. Specifically, a portion of the main ring gear 63 surrounds the outer periphery of the main carrier 62 so that the tooth structure of the main ring gear 63 meshes with the main pinion 61.

The secondary planetary gear train 70 includes a secondary planetary gear 71, a secondary carrier 72, and a secondary ring gear 73. Specifically, the secondary carrier 72 is connected with the primary ring gear 63. The secondary ring gear 73 is connected to the second end of the second output shaft 40, and the external gear teeth 51 of the sun gear 50 and the secondary ring gear 73 are meshed with the secondary planet gears 71. Specifically, a portion of the secondary ring gear 73 surrounds the outer periphery of the secondary carrier 72 so that the tooth structure of the secondary ring gear 73 meshes with the secondary planet gears 71 for transmission.

According to the clothes treatment equipment provided by the embodiment of the application, the input shaft 10 drives the main planetary gear 61 to rotate through the transmission gear structure 11, the main planetary gear 61 drives the first transition gear 620 to rotate, the first transition gear 620 drives the central wheel 50 to rotate, the central wheel 50 is connected with the first output shaft 30, and the first output shaft 30 is further driven to rotate, so that the first output shaft 30 can drive the stirrer of the clothes treatment equipment to rotate; meanwhile, the outer gear of the center wheel 50 rotates to drive the auxiliary planetary gear 71 to rotate reversely, the auxiliary planetary gear 71 drives the auxiliary gear ring 73 to rotate, the auxiliary gear ring 73 is connected with the second output shaft 40 to further drive the second output shaft 40 to rotate reversely, and thus the second output shaft 40 can drive the inner tub of the laundry treating apparatus to rotate reversely. Thus, the stirrer and the inner barrel rotate in opposite directions in the washing process. On the one hand, the power of the input shaft 10 is transmitted to the first output shaft 30 through the transmission gear structure 11, the main planetary gear 61, the first transition gear 620 and the central wheel 50, the first output shaft 30 drives the agitator to rotate in the forward direction, and on the other hand, the power of the input shaft 10 drives the auxiliary planetary gear 71 to rotate in the reverse direction through the central wheel 50, and finally drives the second output shaft 40 to rotate in the reverse direction, so that the inner barrel is driven to rotate in the reverse direction. By the design, the first output shaft 30 and the second output shaft 40 are reversely rotated through the transmission device, the transmission device is simple in structure, and installation space is saved.

It should be noted that, the first transition gear 620 is meshed with the outer gear teeth to realize a gear transmission. During rotation of the first transition gear 620, the center wheel 50 rotates in the opposite direction to the first transition gear 620.

It will be appreciated that the forward and reverse directions are opposite directions of rotation, and that, illustratively, the forward direction is clockwise and the reverse direction is counter-clockwise; the forward direction is counterclockwise and the reverse direction is clockwise.

In the laundry treatment apparatus provided by the embodiment of the present application, in order to output a large torque to the input shaft at a low rotational speed, the rotational speed required by the pulsator is small but the torque is large during washing, and a proper transmission ratio is provided between the input shaft 10 and the first output shaft 30 by the transmission device provided by the embodiment of the present application, so that the pulsator can have a proper low rotational speed and a sufficient torque. The stirrer and the inner barrel rotate oppositely, and clothes and water flow in the inner barrel can move oppositely, so that the movement modes of the clothes and the water flow in the inner barrel are enriched, the scrubbing function is realized, the cleaning ratio is improved, the cleaning effect is improved, and the cleaning speed is improved. In the dehydration process, the inner barrel and the stirrer are combined into a whole to realize high-rotation-speed centrifugal dehydration. The relative rotation angle between the stirrer and the inner barrel can be kept long according to forward and reverse rotation of the power motor, the rotation speed and the swing amplitude of the inner barrel are stable, the ideal washing effect can be achieved, and the high washing purity is realized.

In one embodiment, the laundry treating apparatus includes an outer tub sleeved outside the inner tub. The inner tub may be used for laundry and the outer tub may be used for water. For example, a through hole is formed at a peripheral side wall of the inner tub, and the through hole communicates the inner tub and the outer tub.

Illustratively, in one embodiment, the outer gear teeth include a first tooth structure 52 and a second tooth structure 51 extending continuously in the up-down direction, the first transition gear 620 meshes with the first tooth structure 52, and the pinion gears 71 mesh with the second tooth structure 51. It will be appreciated that the first tooth structure 52 and the second tooth structure 51 are of unitary construction.

The upper side refers to the direction along the first axial side, and the lower side refers to the direction along the second axial side. Illustratively, the first side is shown above and the second side is below with reference to FIG. 1.

In one embodiment, referring to fig. 1, the laundry treating apparatus includes a brake disc 80 and a brake band surrounding an outer circumferential surface of the brake disc 80, and the brake disc 80 is interference-riveted with the clutch shaft 20. Thus, the riveting position of the brake disc 80 and the clutch shaft 20 is balanced in stress, good in stability and not easy to eccentric. In another embodiment, clutch shaft 20 is bolted to brake disc 80. In this way, the clutch shaft 20 and the brake disc 80 are easily detached.

In one embodiment, referring to FIG. 1, brake disc 80 is coupled to clutch shaft 20, and primary planetary gear set 60, secondary planetary gear set 70 and sun gear 50 are all positioned within brake disc 80, with the second end of first output shaft 30 and the second end of second output shaft 40 extending into brake disc 80. On the one hand, the brake disc 80 is used to protect the primary planetary gear set 60, the secondary planetary gear set 70 and the center wheel 50 from other objects interfering with the movements of the primary planetary gear set 60, the secondary planetary gear set 70 and the center wheel 50. On the other hand, the space in brake disc 80 is used to provide mounting positions for primary planetary gear train 60, secondary planetary gear train 70 and sun gear 50, so that the occupied mounting space is reduced, and the structure is more compact.

Brake disc 80 may be made of carbon fiber ceramic or metal, etc. Illustratively, brake rotor 80 may be vented for ventilation, which may improve the cooling performance of brake rotor 80, reduce the thermal decay thereof, and provide better braking capability.

In one embodiment, the brake band has a braking state in which the brake band is in contact with the outer circumferential surface of the disc brake 80 for braking, and a separated state in which the brake band is separated from the outer circumferential surface of the disc brake 80. In this way, the rotation rate of second output shaft 40 can be adjusted by adjusting the magnitude of the friction between the brake band and the outer circumferential surface of brake disc 80 to adjust the rotation rate of brake disc 80. Since the second output shaft 40 is fixedly connected with the inner tub, the rotation rate of the inner tub can be adjusted by adjusting the magnitude of the friction force between the brake band and the outer circumferential surface of the brake disc 80. Thus, during the washing process, the brake is applied by the brake band in contact with the brake disc 80 so that the first output shaft 30 rotates in the opposite direction to the second output shaft 40 at the same speed or at different speeds. Thereby realizing that the stirrer and the inner barrel rotate reversely at the same speed or rotate reversely at different speeds.

In one embodiment, the laundry treating apparatus includes a clutch mechanism and a clutch shaft 20 sleeved outside the input shaft, the clutch mechanism being capable of switching the clutch shaft 20 between a coupled state and a uncoupled state. Specifically, the main ring gear 63 is connected to a first end of the clutch shaft 20.

In the coupled state, the clutch shaft 20 and the input shaft 10 are coupled as a unit; in the disengaged state, the clutch shaft 20 and the input shaft 10 are separated. Thus, when the laundry treating apparatus washes laundry, the clutch mechanism switches the clutch shaft 20 to the separated state, the clutch shaft 20 does not rotate synchronously with the input shaft 10, and the power of the input shaft 10 is transmitted to the first output shaft 30 and the second output shaft 40, so that the first output shaft 30 drives the agitator and the second output shaft 40 drives the inner tub to rotate reversely, thereby washing the laundry. When the clothes treating apparatus is used for clothes, the clutch mechanism enables the clutch shaft 20 to be switched to a combined state, and the input shaft 10, the clutch shaft 20, the first output shaft 30 and the second output shaft 40 rotate in the same direction at the same speed so as to realize centrifugal dehydration of the inner tub.

For example, the clutch shaft 20 and the second output shaft 40 may be hollow shafts, the clutch shaft 20 and the input shaft 10 are coaxially disposed, and the second output shaft 40 and the first output shaft 30 are coaxially disposed.

Illustratively, in one embodiment, the clutch mechanism includes a clutch sleeve, a retractor, a wrap spring, a ratchet, and a pawl. The ratchet wheel is sleeved outside the holding spring, one end of the holding spring is fixed in the assembly hole of the inner peripheral surface of the ratchet wheel, the other end of the holding spring is a free end, and the free end of the holding spring is in flexible contact with the clutch sleeve and the clutch shaft. The holding spring has an initial state for holding the clutch sleeve and an open state for releasing the clutch sleeve. The wrap spring controls washing and dehydration by transmitting torque. The retractor acts to pull the pawl off the ratchet to switch the wrap spring from the open state to the initial state.

Here, in the laundry treating apparatus in a washing state, the tractor is not operated, the pawls are inserted into the tooth grooves of the ratchet, the wrap spring fixed with the ratchet is in an opened state, the input shaft is separated from the clutch shaft, the power output from the power motor is transmitted to the pulley and the input shaft 10 via the belt, and the input shaft 10 transmits the power to the first output shaft 30 and the second output shaft 40 via the center wheel 50, the main planetary gear train 60 and the auxiliary planetary gear train 70, thereby driving the pulsator and the inner tub to rotate reversely. In the dehydrating state of the laundry treating apparatus, the retractor is operated by a preset stroke to drive the pull rod to operate to open the drain valve, and simultaneously the pull rod drives the pawl to disengage from the ratchet, so that the wrap spring is restored to an initial state to wrap the clutch sleeve, the input shaft 10 and the clutch shaft 20. Thus, the first output shaft 30, the second output shaft 40, the center wheel 50, the main planetary gear train 60, the auxiliary planetary gear train 70, the agitator, the inner tub, the clutch sleeve, the clutch shaft 20, the input shaft 10, etc. constitute a unitary structure, and the power motor drives the unitary structure to rotate for dehydration, and the discharged water is discharged out of the laundry treating apparatus through the drain valve and other pipes.

In some embodiments, the laundry treatment apparatus provided by the embodiments of the present application may be a single-stroke retractor, and the pawl ratchet is a single-pawl single-ratchet structure. The clutch control between the input shaft 10 and the clutch shaft 20 is realized through the single-stroke tractor, the single ratchet wheel and the single pawl, the structure is simple, the operation is simple, the single-stroke tractor is mature in technology and low in cost, the requirements on the shaping of the brake band and the working accuracy of the tractor are low, the problems that the abrasion between parts, the increase of the opening force of the brake rod, the high difficulty of accurate clutch conversion and the like are caused by the complexity of an electric control system and a clutch control system are avoided, the change of a clutch mechanism, a control mechanism and the like of clothes treatment equipment in the prior art can be reduced as much as possible, and the design and manufacturing cost is reduced.

Illustratively, the main ring gear 63 is fixed to a first end of the clutch shaft 20.

In one embodiment, the clutch shaft 20 includes a shaft barrel 21 and a connecting disc 22, and the shaft barrel 21 is sleeved outside the input shaft 10. The connection disc 22 surrounds the outer periphery of the shaft tube 21. That is, the land 22 extends radially outward from the outer circumference of the shaft tube 21. The final ring gear 63 is located on a first side of the connecting disc 22. The connection disc 22 is connected to the main ring gear 63. Thus, the coupling disc 22 and the main ring gear 63 are fixed as a unit, and the clutch shaft 20 and the main ring gear 63 rotate synchronously.

In one embodiment, one of the connecting disc 22 and the main gear 63 is formed with a pin hole, and the other of the connecting disc 22 and the main gear 63 is formed with a pin, and the pin is in interference fit with the pin hole. Illustratively, the connection disc 22 may be formed with pin holes, and the main ring gear 63 may be formed with pins. The land 22 may be formed with a pin, and the ring gear 63 may be formed with a pin hole. The interference insertion fit of the pin and the pin hole means that: the pin post is inserted into the pin hole and is in press fit with the hole wall surface of the pin hole. In this way, the main ring gear 63 can be quickly fixed to the connection pad 22.

The pin may be a cylindrical pin or a conical pin, for example, with the shape of the pin bore being adapted to the shape of the pin so that the pin is an interference fit with the pin bore.

Illustratively, the shaft 21 and the coupling disc 22 may be an integrally formed structure. In this way, the clutch shaft 20 has a good structural strength.

The material of the connection pad 22 is not limited, and the connection pad 22 may be made of stainless steel.

The connection disc 22 may be a disc-shaped flange, the brake disc 80 has a hollow structure with openings at the upper and lower ends, the first output shaft 30 and the second output shaft 40 extend into the brake disc 80 through the openings at the first end of the brake disc 80, and the connection disc 22 closes the openings at the second end of the brake disc 80. The connection disc 22 and the brake disc 80 may be fixedly connected by bolts. In this manner, quick assembly between interface disc 22 and brake disc 80 is facilitated.

The secondary carrier 72 is fixed to the primary ring gear 63. The manner in which the secondary carrier 72 is fixed to the primary ring gear 63 is not limited, and the secondary carrier 72 and the primary ring gear 63 may be riveted, bolted, welded, or the like, for example.

The secondary ring gear 73 is fixed to the second end of the second output shaft 40. The secondary ring gear 73 is connected to the second end of the second output shaft 40 in a non-limiting manner, and in some embodiments, the secondary ring gear 73 is provided with a second key around one of the inner circumferential surface of the second output shaft 40 and the outer circumferential surface of the second end of the second output shaft 40, and the secondary ring gear 73 is provided with a second key groove around the other of the inner circumferential surface of the second output shaft 40 and the outer circumferential surface of the second end of the second output shaft 40, where the second key groove is engaged with the second external key. In one embodiment, the secondary ring gear 73 is formed with a second key groove around the inner peripheral surface of the second output shaft 40, and the outer peripheral surface of the second end of the second output shaft 40 is formed with a second key. In another embodiment, the secondary ring gear 73 is formed with a second key around the inner peripheral surface of the second output shaft 40, and the outer peripheral surface of the second end of the second output shaft 40 is formed with a second key groove. The key connection of the sub-ring gear 73 and the second output shaft 40 is achieved by the engagement of the second key and the second key groove, so that the sub-ring gear 73 and the second output shaft 40 can rotate synchronously.

The secondary ring gear 73 is keyed, e.g., splined, to a second end of the second output shaft 40, in particular, the second keyway is a second spline, the second key is a second spline, and the second spline groove and the second spline mesh to key the secondary ring gear 73 to the second output shaft 40.

In one embodiment, referring to fig. 2, the main planet carrier 62 includes a main plate 621, a main cover 622, and a main axle 623, where the main cover 622 and the main plate 621 are disposed opposite to each other. Specifically, the main cover 622 is located on a first side of the main plate 621. The main wheel shaft 623 is located between the main cover 622 and the main plate 621, and the main wheel shaft 623 connects the main cover 622 and the main plate 621. The main planetary gear 61 is rotatably installed on the main wheel shaft 623, and the main cover 622 is formed with an inner hole, and the circumferential surface of the inner hole is formed with a first transition gear 620. One end of the outer gear teeth is positioned within the inner bore so that the outer gear teeth can mesh with the first transition gear 620.

Here, the main planet carrier 62 is generally in a frame structure, and the main planet carrier 62 can be smaller in size and lighter in weight, so that the load of the main planet gear 61 is uniformly distributed and the load is uniformly distributed along the engaged tooth width, and the main planet carrier has good processing technology and assembly technology, so that the planetary gear transmission has high bearing capacity and less vibration and noise.

The material of the main axle 623 may be low carbon alloy structural steel or medium carbon, medium carbon alloy structural steel, or the like.

The number of the main planetary gears 61 is not limited, and the main planetary gears 61 include one or more, for example, 2, 3, 4, or the like main planetary gears 61, and a plurality of main planetary gears 61 may be uniformly distributed around the axis. In this way, the load distribution of the main pinion 61 is uniform.

Illustratively, in one embodiment, the plurality of main planetary gears 61 are provided, and the lower surface of the main cover 622 and the upper surface of the main plate 621 are formed with pillars, and the shape of the pillars is not limited, and may be a circular table, a prismatic table, or a special shape. The column is formed with a sink groove, and both ends of the main wheel shaft 623 in the up-down direction are respectively inserted into the opposite two sink grooves. Specifically, the main planetary gears 61 are provided with 4, and the corresponding sides of the main cover plate 622 and the main planetary carrier 62 are respectively provided with 4 cylindrical columns with sinking grooves uniformly distributed along the circumference, and the 4 cylindrical columns with sinking grooves are used for installing the 4 main gear shafts 623 so as to respectively assemble the 4 main planetary gears 61.

In one embodiment, the main planet carrier 62 is a unitary frame structure, i.e., a space frame structure in which the main cover 622 and the main plate 621 are coupled together with uniformly distributed support columns. Specifically, the main planet carrier 62 includes support columns that are supported between a main cover 622 and a main plate 621. For example, the cross section of the support post may be square, circular, or shaped, etc., and the cross-sectional area of the support post is larger than the area of the main axle 623. Illustratively, the second end of the support post is connected to the main plate 621, the first end of the support post is provided with an inner bore or boss, and a screw is threaded through the main cover plate 622 and the inner bore or boss is riveted to the main cover plate 622. Thus, the support column provides a space between the main plate 621 and the main cover plate 622 for mounting the main planetary gears 61.

In one embodiment, the secondary planet carrier 72 is located on a first side of the primary ring gear 63, one of the secondary planet carrier 72 and the primary ring gear 63 is formed with a locking pin, and the other of the secondary planet carrier 72 and the primary ring gear 63 is formed with a pin slot, the locking pin and the pin slot being in interference fit. By way of example, it may be that the secondary planet carrier 72 is formed with locking pins and the primary ring gear 63 is formed with pin grooves. The secondary carrier 72 may be formed with pin grooves, and the primary ring gear 63 may be formed with lock pins. The interference insertion fit of the lock pin and the pin groove means that: the lock pin is inserted into the pin groove and is in press fit with the groove wall surface of the pin groove. In this way, the primary ring gear 63 can be quickly fixed to the secondary carrier 72. The lock pin and the lock groove are in interference insertion fit, so that the main gear ring 63 and the auxiliary planet carrier 72 can be prevented from falling off, and larger torque can be transmitted, and therefore, the auxiliary planet carrier 72 and the main gear ring 63 are integrally designed, the transmission device is more compact in structure, and the production cost is reduced.

In one embodiment, referring to fig. 3, the secondary planet carrier 72 includes a secondary plate 721, a secondary cover plate 722, and a secondary axle 723, the secondary cover plate 722 and the secondary plate 721 being disposed opposite each other. Specifically, the secondary cover plate 722 is located on a first side of the secondary plate 721. The sub-axle 723 is located between the sub-cover 722 and the sub-plate 721, and the sub-axle 723 connects the sub-cover 722 and the sub-plate 721. The pinion 71 is rotatably provided on the pinion shaft 723. Specifically, the sub plate 721 is formed with a pin groove or a lock pin.

Here, the auxiliary planet carrier 72 is substantially in a frame structure, and the auxiliary planet carrier 72 can be smaller in size and lighter in weight, so that the auxiliary planet carrier 71 is ensured to uniformly distribute load and load along the engaged tooth width, and has good processing technology and assembly technology, so that the planetary gear transmission has high bearing capacity and less vibration and noise.

The material of the secondary axle 723 may be low carbon alloy structural steel or medium carbon, medium carbon alloy structural steel, or the like.

The number of the pinion gears 71 is not limited, and the pinion gears 71 may include one or more, for example, 2, 3, 4, or the like of the pinion gears 71, and a plurality of the pinion gears 71 may be uniformly distributed around the axis. In this way, the load distribution of the pinion 71 is uniform.

In one embodiment, the lower surface of the auxiliary cover plate 722 and the upper surface of the auxiliary plate 721 are both formed with protrusions, and the shape of the protrusions is not limited, and may be a truncated cone, a truncated pyramid, or a special shape. The protrusions are formed with sinking tables, and both ends of the sub-axle 723 in the up-down direction are respectively inserted into the two opposite sinking tables. Specifically, the number of the auxiliary planetary gears 71 is 4, and the corresponding sides of the auxiliary cover plate 722 and the auxiliary planet carrier 72 are respectively provided with 4 cylindrical sinking tables with sinking tables uniformly distributed along the circumference so as to respectively assemble the 4 auxiliary planetary gears 71.

In one embodiment, the secondary planet carrier 72 is a unitary frame structure, i.e., a space frame structure in which the secondary cover plate 722 and the secondary plate 721 are coupled together by uniformly distributed load-bearing columns. Specifically, the secondary planet carrier 72 includes a carrier post supported between a secondary cover plate 722 and a secondary plate 721. For example, the cross section of the load post may be square, circular, or shaped, etc., and the cross-sectional area of the load post may be larger than the area of the main axle 623. Illustratively, the second end of the load post is connected to the secondary plate 721, the first end of the load post is provided with a blind hole or post, and a screw is threaded through the secondary plate 722 to engage the blind hole or the post is riveted to the primary plate 622. In this way, the carrier posts allow sufficient space between the secondary cover plate 722 and the secondary plate 721 to mount the secondary planet gears 71.

In one embodiment, the first end of the secondary ring gear 73 is formed with a second transition gear 730 surrounding the outer circumference of the second end of the second output shaft 40, one of the inner circumferential surface of the second transition gear 730 and the outer circumferential surface of the second end of the second output shaft 40 is formed with a third key groove, and the other one of the inner circumferential surface of the second transition gear 730 and the outer circumferential surface of the second end of the second output shaft 40 is formed with a third key groove, and the third keys are in a third key groove connection. Illustratively, in one embodiment, the inner circumferential surface of the second transition gear 730 is formed with a third key extending in the axial direction of the second output shaft 40, and the outer circumferential surface of the second end of the second output shaft 40 is formed with a third key groove extending in the axial direction of the second output shaft 40. For another example, in another embodiment, the inner peripheral surface of the second transition gear 730 is formed with a third key groove extending in the axial direction of the second output shaft 40, and the outer peripheral surface of the second end of the second output shaft 40 is formed with a third key extending in the axial direction of the second output shaft 40. The third key is inserted into the third key groove and kept engaged to achieve the key connection. In this way, the sub-ring gear 73 and the second output shaft 40 can be assembled quickly with high reliability.

The type of third key is not limited, and in an exemplary embodiment, the third key is a third spline, and the third keyway is a third spline groove. In another embodiment, the third key is a flat key, and then the third key slot is a flat key slot.

The second transition gear 730 is keyed to the second output shaft 40. During the rotation of the second transition gear 730, the second output shaft 40 rotates in synchronization with the second transition gear 730 in the same direction.

In one embodiment, the transmission includes a rolling bearing 90, the rolling bearing 90 being sandwiched between the brake disc 80 and the second output shaft 40. The rolling bearing 90 is convenient to maintain and reliable in quality, and changes sliding friction between the brake disc 80 and the second output shaft 40 into rolling friction, so that friction loss is reduced.

In one embodiment, the inner race of the rolling bearing 90 is an interference fit with the second output shaft 40. In this way, the rolling bearing 90 can be rotated synchronously with the second output shaft 40 or stationary synchronously.

The specific type of the rolling bearing 90 is not limited, and the rolling bearing 90 may be a deep groove ball bearing, an angular contact bearing, a tapered roller bearing, or the like, by way of example.

In one embodiment, the transmission includes a plurality of bushings 100, at least one bushing 100 is disposed between the input shaft 10 and the clutch shaft 20, and at least one bushing 100 is disposed between the first output shaft 30 and the second output shaft 40. Illustratively, two bushings 100 are provided between the input shaft 10 and the clutch shaft 20, and two bushings 100 are provided between the first output shaft 30 and the second output shaft 40.

The material of the bushing 100 is not limited, and may be soft metal, rubber, nylon, or a nonmetallic polymer. Illustratively, the material of the bushing 100 is powder metallurgy, relatively soft in texture and low in price. The bushing 100 itself is convenient to replace after damage, low in cost and economical, and has functions of supporting, sealing, protecting wear and the like for the input shaft 10 and the clutch shaft 20.

The various embodiments/implementations provided by the application may be combined with one another without contradiction.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A laundry treatment apparatus, comprising:

a first output shaft;

the second output shaft is sleeved outside the first output shaft;

2. The laundry treating apparatus according to claim 1, wherein one of an outer peripheral surface of the second end of the first output shaft and an inner peripheral surface of the center wheel is provided with a first key, and the other of the outer peripheral surface of the second end of the first output shaft and the inner peripheral surface of the center wheel is provided with a first key groove, the first key being engaged with the first key groove.

3. The laundry treating apparatus according to claim 1, wherein the sub-ring gear is provided with a second key around one of an inner peripheral surface of the second output shaft and an outer peripheral surface of the second end of the second output shaft, and the sub-ring gear is provided with a second key groove around the other of the inner peripheral surface of the second output shaft and the outer peripheral surface of the second end of the second output shaft, the second inner key groove and the second outer key being engaged.

4. The laundry treatment apparatus according to claim 1, wherein the outer gear teeth include a first tooth structure and a second tooth structure provided to extend continuously in an up-down direction, the first transition gear is meshed with the first tooth structure, and the pinion gear is meshed with the second tooth structure.

5. The laundry treatment apparatus according to claim 1, characterized in that the laundry treatment apparatus comprises a clutch mechanism and a clutch shaft sleeved outside the input shaft, the clutch mechanism being capable of switching the clutch shaft between a coupled state and a uncoupled state;

6. The laundry treatment apparatus according to claim 5, wherein the clutch shaft comprises a shaft cylinder and a connection disc, the shaft cylinder is sleeved outside the input shaft, the connection disc surrounds the periphery of the shaft cylinder, the main ring gear is located at a first side of the connection disc, and the connection disc is connected with the main ring gear.

7. The laundry treatment apparatus according to claim 1, wherein the main carrier includes a main plate, a main cover plate and a main wheel shaft, the main cover plate being disposed opposite to the main plate, the main wheel shaft being located between and connecting the main cover plate and the main plate, the main planetary gear rotatably penetrating the main wheel shaft, the main cover plate being formed with an inner hole, a circumferential surface of the inner hole being formed with the first transition gear, one end of the outer gear tooth being located in the inner hole.

8. The laundry treatment apparatus according to claim 1, characterized in that the secondary planet carrier is located at a first side of the primary ring gear, one of the secondary planet carrier and the primary ring gear is formed with a locking pin, the other of the secondary planet carrier and the primary ring gear is formed with a pin slot, the locking pin is in interference fit with the pin slot.

9. The laundry treatment apparatus according to claim 1, wherein the auxiliary carrier includes an auxiliary plate, an auxiliary cover plate, and an auxiliary wheel shaft disposed opposite to the auxiliary plate, the auxiliary wheel shaft being disposed between and connecting the auxiliary cover plate and the auxiliary plate, the auxiliary planetary gear rotatably penetrating the auxiliary wheel shaft.

10. The laundry treating apparatus according to claim 1, wherein the first end of the sub-ring gear is formed with a second transition gear surrounding an outer circumference of the second end of the second output shaft, one of an inner circumferential surface of the second transition gear and an outer circumferential surface of the second end of the second output shaft is formed with a third key groove, and the other one of the inner circumferential surface of the second transition gear and the outer circumferential surface of the second end of the second output shaft is formed with a third key groove, the third key groove being engaged with the third key groove.

11. The laundry treatment apparatus according to claim 1, characterized in that the laundry treatment apparatus comprises a brake disc and a brake band surrounding an outer circumferential surface of the brake disc, the brake disc being interference riveted with the clutch shaft, or the clutch shaft being bolted with the brake disc.