CN107245844B

CN107245844B - Washing machine and speed reducing clutch thereof

Info

Publication number: CN107245844B
Application number: CN201710401580.9A
Authority: CN
Inventors: 胡义明; 闫甜甜; 吴迪; 陈金涛
Original assignee: Guangdong Welling Motor Manufacturing Co Ltd; Midea Welling Motor Technology Shanghai Co Ltd
Current assignee: Guangdong Welling Motor Manufacturing Co Ltd; Midea Welling Motor Technology Shanghai Co Ltd
Priority date: 2017-05-31
Filing date: 2017-05-31
Publication date: 2023-05-30
Anticipated expiration: 2037-05-31
Also published as: CN107245844A

Abstract

The invention relates to the field of washing machines and discloses a washing machine and a speed reduction clutch thereof, wherein the speed reduction clutch comprises an upper fluted disc, a lower fluted disc, a clutch mechanism, a speed reduction transmission assembly and a clutch control mechanism, the upper fluted disc is fixedly arranged, and the lower fluted disc is arranged opposite to the upper fluted disc and is connected with a power input shaft; the clutch control mechanism comprises a deflector rod, a deflector ring and a deflector ring support fixedly installed relative to the upper fluted disc, wherein the deflector rod is provided with an arc-shaped slideway, the deflector ring is provided with a guide pin arranged in the arc-shaped slideway, and a first joint surface, a second joint surface and a convex table surface are formed on one side of the deflector ring, which is opposite to the deflector ring support, respectively. The speed reducing clutch of the invention utilizes the deflector rod to control the deflector ring to rotate so that the first joint surface and the second joint surface are selectively matched with the boss surface between the deflector rings, thereby realizing clutch operation and having the advantages of compact structure, convenient and reliable operation and the like.

Description

Washing machine and speed reducing clutch thereof

Technical Field

The invention relates to the field of washing machines, in particular to a speed reducing clutch of a washing machine. On the basis, the invention also relates to a washing machine with the speed reducing clutch.

Background

The transmission system (speed reducing clutch) of the washing machine is an important part of the washing machine and has four functions of transmission, speed reduction, clutch and brake. During the washing working condition, the motor power is transmitted to the pulsator after being decelerated and moment-increased through the transmission mechanism and the deceleration mechanism; during elution conversion, the clutch mechanism is driven by the driving mechanism to act, so that the impeller and the inner barrel are fixedly connected through the transmission mechanism and the clutch mechanism, the speed reducing mechanism does not act, and the motor power is directly transmitted to the impeller and the inner barrel; after the dehydration is completed, the brake mechanism makes the inner barrel slow down to stop, the clutch mechanism resets, and the washing machine returns to the washing state.

Compared with the traditional clutch adopting the wrap spring clutch, the tooth-meshing clutch is widely applied to a large-capacity high-reliability washing machine. The spiral clutch mode is a common mode of the existing tooth meshing clutch, and generally comprises a shifting ring support, a shifting ring, a clutch gear ring and a shifting ring driving device, wherein the shifting ring support and a clutch input shaft are coaxially arranged, the shifting ring is coaxially arranged inside the shifting ring support, spiral surfaces are arranged on the shifting ring support and the shifting ring, the driving device drives the shifting ring to rotate around a central shaft of the clutch, the shifting ring and the shifting ring support are driven to perform spiral movement, and the clutch gear ring is driven to move up and down so as to complete clutch action.

In order to avoid the too large spiral angle of the shifting ring and the bracket, the shifting ring is required to rotate around the central shaft by a larger angle, and how to arrange the shifting ring driving device becomes a difficult problem of the clutch mode. The prior art dial ring driving device is generally complex, has a plurality of parts, and needs to be provided with a separate driving motor to complete the clutch action, thereby having adverse effects on control cost, simplified assembly process and ensured use stability; the axial dimension design is not compact enough, the axial space of the clutch is wasted, and the washing capacity is reduced under the condition that the volume of the washing machine is unchanged; the clutch teeth are unreasonable in design, difficult to enter engagement, and high in engagement noise; part of the parts are redundant in design, and double waste of space and materials is caused.

Disclosure of Invention

The invention aims to solve the problems of complex structure, inconvenient operation and the like in the prior art and provides a speed reduction clutch which has the advantages of compact structure, convenient operation and the like.

In order to achieve the above object, an aspect of the present invention provides a reduction clutch of a washing machine, comprising: the upper fluted disc and the lower fluted disc are fixedly arranged, and the lower fluted disc is arranged opposite to the upper fluted disc and is connected with a power input shaft; a clutch mechanism; a reduction drive assembly including a wash drive train including a wash shaft and a planetary gear set drivingly connected between the wash shaft and the power input shaft, and a dehydration drive train including a power input shaft sleeve normally engaged to the clutch mechanism and a dehydration shaft sleeve drivingly connected to the power input shaft sleeve, the power input shaft extending through the power input shaft sleeve, the wash shaft extending through the dehydration shaft sleeve; the clutch control mechanism comprises a deflector rod, a deflector ring and a deflector ring support fixedly installed relative to the upper fluted disc, the deflector rod is provided with an arc-shaped slideway, one side of the deflector ring is supported on the deflector ring support, the other side of the deflector ring is supported on the clutch mechanism, the deflector ring is provided with a guide pin arranged in the arc-shaped slideway, the guide pin can move in the arc-shaped slideway along with the rotation of the deflector rod so as to drive the deflector ring to rotate around the central axis of the clutch mechanism, the deflector ring comprises a first joint surface and a second joint surface which have different extension heights along the axial direction of the deflector ring support, and the deflector ring support is provided with a plurality of convex table surfaces so as to enable the clutch mechanism to be in transmission joint with the upper fluted disc when the deflector ring rotates to the position where the first joint surface is matched with the convex table surface, and enable the clutch mechanism to be in transmission joint with the rotor part when the deflector ring rotates to the position where the second joint surface is matched with the convex table surface.

Preferably, a first engagement tooth portion and a second engagement tooth portion are formed at opposite sides of the upper and lower toothed plates, respectively, and both ends of the clutch mechanism have an upper tooth portion and a lower tooth portion, respectively, and the clutch mechanism is installed between the upper and lower toothed plates and is operable to slide toward one of them so that the first engagement tooth portion is engaged with the upper tooth portion or the second engagement tooth portion is engaged with the lower tooth portion.

Preferably, the clutch mechanism comprises a clutch gear ring and a clutch pressure spring, the upper tooth part and the lower tooth part are respectively formed at two end parts of the clutch gear ring, the clutch gear ring is provided with a containing groove with an opening facing the upper fluted disc, and the clutch pressure spring is installed in the containing groove.

Preferably, the clutch ring gear has a first splined hole, and the power input shaft sleeve has a first splined portion in constant mesh with the first splined hole.

Preferably, the lower toothed disc is integrally formed on a pulley having a second splined bore, and the power input shaft has a second splined portion in interference fit with the second splined bore.

Preferably, the pulley has a spline pad disposed at an end of the second spline hole.

Preferably, the dial ring support is mounted on the upper fluted disc through a buckle, and/or a transitional inclined surface is formed between the first joint surface and the second joint surface.

Preferably, at least part of the convex table surface is provided with a guide groove, and the poking ring is provided with a positioning column matched with the guide groove.

Preferably, the speed reducing clutch comprises a shell and a cover plate covered on the shell, the upper fluted disc is fixed on one side of the shell, which is far away from the cover plate, the planetary gear set is accommodated in the inner cavity of the shell, and the power input shaft and the washing shaft respectively pass through the shell and the cover plate correspondingly and are in transmission connection with the planetary gear set.

Preferably, the power input shaft has a sun gear, and the planetary gear set includes a carrier, a planetary gear mounted on the carrier and meshed with the sun gear, and an annular gear surrounding and meshed with the planetary gear, the annular gear being circumferentially engaged with the power input shaft.

Preferably, the planet carrier is formed with a third splined bore and the washing shaft has a third splined portion in interference fit with the third splined bore.

Preferably, the shift lever is mounted on the shell and/or the cover plate in a biased manner through a shift lever shaft and a shift lever spring sleeved on the shift lever shaft.

Preferably, the dehydration drive train comprises a brake disc connected between the power input shaft sleeve and the dehydration shaft sleeve, and the deflector rod is connected with a brake band which can be controlled to be contacted with or separated from the brake disc.

Preferably, the upper toothed disc is formed with an opening through which the dial ring extends to be operatively connected to the clutch mechanism, and/or the housing is formed with a relief for passage of the dial ring at a position adjacent the upper toothed disc.

Preferably, the power input shaft sleeve and the dehydrating shaft sleeve are respectively provided with bushings, and are respectively and correspondingly pivotally mounted to the housing and the cover plate through bearings.

A second aspect of the present invention provides a washing machine having the above-described reduction clutch.

Through the technical scheme, the speed reducing clutch disclosed by the invention utilizes the deflector rod to control the deflector ring to rotate, so that the first joint surface and the second joint surface of the speed reducing clutch are selectively matched with the boss surface between the deflector ring, clutch operation is realized, and the speed reducing clutch has the advantages of compact structure, convenience and reliability in operation and the like.

Drawings

FIG. 1 is a front view of a wash regime of one embodiment of a reduction clutch of the present invention;

FIG. 2 is a schematic view of an exploded view of a wash regime of one embodiment of a reduction clutch of the present invention;

FIG. 3 is a schematic view of an embodiment of a dial bracket according to the present invention;

FIG. 4 is a structural view of one embodiment of a dial ring in accordance with the present invention;

FIG. 5 is a structural view of one embodiment of a housing involved in the present invention;

FIG. 6 is a schematic representation of the structure of one embodiment of a pulley in accordance with the present invention;

FIG. 7 is a first perspective view of one embodiment of an upper toothed disc in accordance with the present invention;

fig. 8 is a second perspective view of the upper toothed disc of fig. 7.

Description of the reference numerals

1-a housing; 3-a first engagement tooth; 4-a second engagement tooth; 5-clutch gear ring; 6-a deflector rod; 7-shifting rings; 8-a dial ring bracket; 10-cover plate; 11-a power input shaft; 11 a-a second spline section; 12-a power input shaft sleeve; 12 a-a first spline section; 13-a brake band; 14-a brake disc; 15-a bearing retainer ring; 16-bearings; 17-a washing shaft; 17 a-a third spline section; 18-dehydrating shaft sleeve; 22-a dial shaft; 23-brake pins; 24-a deflector rod spring; 26-clutch compression springs; 27-a bushing; 28-sun gear; 29-planet wheels; 30-an inner gear ring; 31-a planet carrier; 311-third spline holes; 34-locking screws; 35-asphalt felt; 36-spline shims; 40-upper fluted disc; 50-a belt pulley; 501-a second splined hole; 503-grooves; 60-a lower fluted disc; 102-positioning holes; 103-a threaded hole; 104-avoiding part; 302-locating pins; 303-mounting holes; 304-an opening; 51-upper teeth; 52-lower teeth; 53-a receiving groove; 54-a first splined hole; 601-an arc-shaped slideway; 602-a driving part; 701-a guide pin; 702-a connecting arm; 703-a first engagement surface; 704-a second engagement surface; 706-transition inclined plane; 707-positioning columns; 801-raised table top; 802-buckle; 803-guide slot.

Detailed Description

In the present invention, unless otherwise specified, terms such as "upper, lower, left, and right" and "upper, lower, left, and right" are used generically to refer to the upper, lower, left, and right illustrated in the drawings; "inner and outer" means inner and outer relative to the contour of the respective parts themselves.

As shown in fig. 1 to 8, a driving mechanism of a washing machine according to a preferred embodiment of the present invention includes an upper toothed disc 40, a lower toothed disc 60 as a power source, a clutch mechanism for selectively coupling the upper toothed disc 40 or the lower toothed disc 60, a reduction gear assembly, and a clutch manipulation mechanism for manipulating the movement of the clutch mechanism. Wherein:

a lower toothed disc 60 may be provided on the pulley 50.

The clutch mechanism includes a clutch ring gear 5 and a clutch compression spring 26 that provides an elastic force for the action of the clutch ring gear 5.

The speed reduction transmission assembly is divided into a washing transmission system and a dehydration transmission system, and the power transmission system and the dehydration transmission system respectively correspond to the power transmission of the washing working condition and the power transmission of the dehydration working condition of the washing machine. The wash drive train comprises a wash shaft 17 and a planetary gear set connected to the wash shaft 17; the dehydrating drive train includes a power input shaft housing 12 and a dehydrating shaft housing 18 coaxially sleeved outside the washing shaft 17, and the washing shaft 17 extends through the dehydrating shaft housing 18.

The clutch control mechanism comprises a shifting rod 6, a shifting ring 7 and a shifting ring support 8, wherein the shifting ring support 8 is fixedly installed relative to the upper fluted disc 40, and the shifting ring 7 is arranged in the shifting ring support 8. When the dial ring 7 rotates to different positions, the clutch mechanism is in transmission engagement with the upper fluted disc 40 or the lower fluted disc 60, so that the washing machine works under the washing or dewatering working condition.

The lower fluted disc 60 is integrally injection molded with the second engaging tooth portion 4 for driving connection with the clutch mechanism under the dehydration condition. The lower fluted disc 60 is also provided with a second splined hole 501 in an injection molding mode, the end part of the second splined hole 501 is provided with a spline gasket 36, one shaft end of the power input shaft 11 is provided with a second splined part 11a, the second splined part 11a is pressed in the second splined hole 501 in an interference fit mode, and when the second splined part and the second splined part are assembled in place in an interference fit mode, a spline shoulder arranged on the power input shaft 11 and corresponding to the second splined part 11a is mutually abutted with the spline gasket 36.

The power input shaft 11 is in interference fit with the second spline portion 11a through the second spline hole 501 of the lower fluted disc 60, so that the connection rigidity is improved, and noise caused by fit clearance when the power input shaft 11 is meshed between the second spline portion 11a and the second spline hole 501 during forward and reverse rotation is reduced. In addition, the key matching length of the lower fluted disc 60 and the second spline part 11a on the power input shaft 11 is not less than 15 mm, so that the installation rigidity of the lower fluted disc 60 and the positioning precision between the lower fluted disc 60 and the upper fluted disc 40 are ensured, the air gap between the stator and the rotor is reasonably reduced, and the efficiency of the motor assembly is improved;

the upper tooth portion 51 and the lower tooth portion 52 are respectively formed at two ends of the clutch gear ring 5, and an accommodating cavity 53 is arranged at the position, facing the upper fluted disc 40, of the clutch gear ring 5, a clutch pressure spring 26 of a clutch mechanism is arranged in the accommodating cavity 53, and when elution is switched, the elastic acting force of the clutch pressure spring 26 and the self weight of the clutch gear ring 5 are together, and the lower tooth portion 51 and the second joint tooth portion 4 are meshed. The upper tooth part 51 and the lower tooth part 52 on the clutch gear ring 5 are integrally injection molded parts, the clutch teeth on the two tooth parts are formed by connecting two sections of straight teeth, the projection on the axial direction is in a step shape, the step-shaped clutch teeth can improve the connection strength and the meshing reliability of the clutch gear ring 5 during meshing, the tooth surface abrasion and the tooth damage can be effectively reduced, and the meshing noise is reduced.

The upper toothed disc 40 includes a first engagement tooth 3. The engagement teeth of the first engagement tooth portion 3 are stepped clutch teeth of the same structure as the upper tooth portion 51 and the lower tooth portion 52 to engage with the clutch ring gear 5 under the washing condition. An opening 304 is formed in the upper toothed disc 40 around the circumferential direction of the first engaging tooth portion 3.

The stator and rotor parts are all integrated injection molding parts, so that the precision requirements among all technical features are ensured.

The lower toothed disc 60 is formed with a second engaging tooth portion 4 on a side opposite to the upper toothed disc 40, and the clutch mechanism is axially located between the upper and lower

toothed discs

40, 60 and can be driven to slide toward the upper or lower

toothed discs

40, 60 to engage the first engaging tooth portion 3 with the upper tooth portion 51 or the second engaging tooth portion 4 with the lower tooth portion 52.

The clutch ring gear 5 is formed with a first spline hole 54, and the power input sleeve 12 is provided with a first spline portion 12a which is in key connection with the first spline hole 54.

A plurality of groups of buckles 802 are arranged on the dial bracket 8, and the buckles 802 are buckled on the upper fluted disc 40. The shifting ring 7 comprises a first joint surface 703 and a second joint surface 704 which have different extending heights along the axial direction facing the shifting ring bracket 8, a transitional inclined surface 706 is formed between the first joint surface 703 and the second joint surface 704, the height difference between the first joint surface 703 and the second joint surface 704 is larger than the maximum stroke of the clutch gear ring 5, a spiral pair is formed between the shifting ring bracket 8 and the shifting ring 7 through the transitional inclined surface 706, and the shifting ring 7 moves spirally in the shifting ring bracket 8 during the clutch action, so that the clutch gear ring 5 is driven to move up and down to complete elution conversion.

The dial bracket 8 has a plurality of boss surfaces 801 to drivingly engage the clutch mechanism to the upper toothed disc 40 when the dial 7 is rotated to a position where the first engagement surface 703 mates with the boss surfaces 801 and to drivingly engage the clutch mechanism to the lower toothed disc 60 when the second engagement surface 704 mates with the boss surfaces 801.

As shown in fig. 1 and 2, the driving system of the washing machine described in the present invention further includes a housing 1 and a cover plate 10 mounted on the housing 1, an upper toothed disc 40 is fixed on a side of the housing 1 facing away from the cover plate 10, a planetary gear set is accommodated in an inner cavity formed at the upper and lower sides of the housing 1, and a power input shaft 11 and a washing shaft 17 are drivingly connected to the planetary gear set through the housing 1 and the cover plate 10, respectively.

In the clutch control mechanism, a deflector rod 6 is provided with an arc-shaped slide way 601, one side of a deflector ring 7 is supported on a deflector ring support 8, the other side of the deflector ring 7 is supported on a clutch deflector ring 5 of the clutch mechanism, the deflector ring 7 is provided with a guide pin 701 which is arranged in the arc-shaped slide way 601 in a sliding manner, the arc-shaped slide way 601 is provided with an equal-width waist-shaped hole, the guide pin 701 is provided with a cylinder, the guide pin 701 and the cylinder form a sliding connection pair, and the guide pin 701 moves in the arc-shaped slide way 601 along with the rotation of the deflector rod 6, so that the deflector ring 7 is driven to rotate around the central axis of the clutch mechanism. The 7-position thin-wall metal piece of the shifting ring is provided with a connecting arm 702 which is bent at least once, and the purpose of bending the connecting arm 702 is as follows: firstly, the axial height is reduced, and secondly, the rigidity of the connection arm 702 of the dial 2 is improved. The connecting arm 702 passes through the opening 304 and is operatively connected to the clutch mechanism, and the housing 1 is formed with a relief 104 for the passage of the connecting arm 702 of the dial 7 near the upper toothed disc 40.

The convex table surface 801 is provided with a kidney-shaped hole-shaped guide groove 803, and the shifting ring 7 is provided with a positioning column 707 which can slidably penetrate into the guide groove 803, and the positioning column 707 is inserted into the guide groove 803, so that the shifting ring 7 can be prevented from being laterally turned to cause unstable positioning when the guide pin 701 is pushed by the side wall of the arc-shaped slide way 601.

A sun gear 28 is formed at one shaft end of the power input shaft 11, the planetary gear set further comprises planetary gears 29 meshed with the sun gear 28, an inner gear ring 30 is arranged on the outer periphery of all the planetary gears 29 in a surrounding mode and meshed with the planetary gears 29, the planetary gears 29 are mounted on a planetary carrier 31, and the inner gear ring 30 is sleeved on the outer circumference of the planetary carrier 31 in an empty mode and is in circumferential engagement with the input shaft sleeve 12 through the inner gear ring 30. To this end, sun gear 28, planet gears 29, ring gear 30 and planet carrier 31 together form a planetary gear set. All gears in the planetary gear set adopt helical gears, the contact ratio of the helical gear transmission gear teeth is high, the transmission is stable, the bearing capacity is strong, the axial clearance can be effectively controlled, and the noise is reduced. And the planet gears 29 and the ring gear 30 are integrally injection-molded. The carrier 31 is manufactured using a die casting process.

The planet carrier 31 is formed with a third spline hole 311, a third spline portion 17a which is inserted into the third spline hole 311 in an interference manner is formed at a corresponding position on the washing shaft 17, and an upper end surface of the planet carrier 31 is pressed against a shoulder formed on the washing shaft 17 near the third spline portion 17 a. The interference connection between the washing shaft 17 and the planet carrier 31 can improve the connection rigidity between the washing shaft 17 and the planet carrier 31, reduce the generation of washing noise caused by the engagement between the third spline part 17a on the washing shaft 17 and the third spline hole 311 when the washing shaft 17 frequently rotates positively and negatively, and simultaneously, the upper end surface of the planet carrier 31 is pressed at the shaft shoulder on the washing shaft 17, so that the assembly precision can be improved.

The shift lever 6 is mounted on the housing 1 or the cover plate 10 by means of a shift lever shaft 22 and a shift lever spring 24 which is connected to the shift lever shaft 22 in a biased manner.

The central position of the shell 1 is also provided with a concave bearing block, and when the bearing is installed at the position, the bearing is directly pressed and assembled to the bottom surface of the outer ring to be flush with the lower end surface of the shell 1, and the axial size of the clutch is further reduced by the concave bearing block 101. The bottom surface of the housing 1 is also formed with a plurality of positioning holes 102 and threaded holes 103, and the planet carrier 31 is conveniently positioned and mounted on the housing 1 through the positioning holes 102 and the threaded holes 103.

The dehydrated drive train comprises a brake disc 14 connected between an input sleeve 12 and a dehydrated sleeve 18, the lever 6 is connected with a brake band 13 which can be operated to contact or be remote from the brake disc 14, the brake disc 14 and the input sleeve 12 form a cavity in which an inner gear ring 30 of the planetary gear set is axially arranged with a certain play.

The inner holes of the dewatering shaft sleeve 18 and the input shaft sleeve 12 are provided with bushings 27 in an interference press mode, the bushings 27 are respectively and pivotally mounted on the shell 1 and the cover plate 10 through bearings 16, the bushings 27 are made of porous powder metallurgy, certain compressibility is achieved, and the bushings 27 are compressed and positioned through special tools so as to ensure the axial dimension and tolerance zone between the bushings 27, and positioning accuracy is improved. The axial dimension between the bushings is reduced as much as possible while maintaining rigidity, and the axial displacement between the end surfaces of the two bushings 27 and the felt 35 is no more than 1mm. The axial dimension of the input shaft is reasonably designed, and the axial space can be compressed while the assembly rigidity is improved.

The clutch principle of the driving system of the washing machine of the present invention is described as follows:

when in an initial position, the deflector rod 6 is positioned at an initial installation position, the first joint surface 703 is attached to the boss surface 801, the deflector ring 7 is positioned at an upper position, the clutch gear ring 5 is supported to be meshed with the first joint tooth part 3, the inner cylinder of the washing machine is locked, at the moment, the clutch pressure spring 26 is in a compressed state, and the washing machine is in a washing working condition;

when the control part of the washing machine sends a dewatering instruction, the deflector rod 6 rotates by a certain angle under the drive of the drainage tractor, so that the guide pin 701 is driven to slide in the arc-shaped slide way 601, when the guide pin 701 moves to a certain position in the arc-shaped slide way 601, the deflector ring 7 rotates by a certain angle around the central axis of the clutch structure, in the process, the first joint surface 703 and the boss surface 801 are separated from each other, the transition inclined surface 704 on the deflector ring 7 and the deflector ring bracket 8 relatively slide to complete spiral movement, when the deflector ring 7 rotates to the end point, the second joint surface 704 is jointed with the boss surface 801, the deflector ring 7 moves to the lower position and is separated from the clutch gear ring 5, the clutch gear ring 5 is meshed with the second joint tooth part 4 under the action of self gravity and the elastic restoring force of the clutch pressure spring 26, the inner barrel of the washing machine is fixedly connected with the impeller by the transmission system, the conversion from the washing working condition to the dewatering working condition of the washing machine is completed, and at the moment, the movement stroke of the deflector ring 7 is larger than the stroke of the clutch gear ring 5, and abrasion between the two working conditions under the high-speed dewatering working condition is avoided.

When the washing machine is dehydrated, the driver stops working, the deflector rod 6 is reset under the elastic reset force of the deflector rod spring 24, the clutch gear ring 5 is driven to move upwards, the clutch gear ring is separated from the meshing relationship with the second engagement tooth part 4, the state of meshing with the first engagement tooth part 3 is re-entered, the washing machine is restored to the initial washing state at the moment, and the clutch pressure spring 26 is compressed again.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, a number of simple variants of the technical solution of the invention are possible, including combinations of individual specific technical features in any suitable way. The various possible combinations of the invention are not described in detail in order to avoid unnecessary repetition. Such simple variations and combinations are likewise to be regarded as being within the scope of the present disclosure.

Claims

1. A speed reducing clutch of a washing machine, comprising:

a housing (1) and a cover plate (10) covering the housing (1);

an upper fluted disc (40) and a lower fluted disc (60), wherein the upper fluted disc (40) is fixed on one side of the shell (1) which is far away from the cover plate (10), and the lower fluted disc (60) is arranged opposite to the upper fluted disc (40) and is connected with a power input shaft (11);

a clutch mechanism;

a reduction drive assembly comprising a washing drive train and a dewatering drive train, the washing drive train comprising a washing shaft (17) and a planetary gear set drivingly connected between the washing shaft (17) and the power input shaft (11), the planetary gear set being accommodated in the housing (1) interior, the dewatering drive train comprising a power input shaft sleeve (12) normally engaged to the clutch mechanism and a dewatering shaft sleeve (18) drivingly connected to the power input shaft sleeve (12), the power input shaft (11) extending through the power input shaft sleeve (12), the washing shaft (17) extending through the dewatering shaft sleeve (18), and the power input shaft (11) and the washing shaft (17) being drivingly connected to the planetary gear set through the housing (1) and the cover plate (10), respectively; the method comprises the steps of,

a clutch control mechanism comprising a deflector rod (6), a deflector ring (7) and a deflector ring bracket (8) fixedly installed relative to the upper fluted disc (40), wherein the deflector rod (6) is provided with an arc-shaped slideway (601) and is installed on the shell (1) and/or the cover plate (10) in a biased way through a deflector rod shaft (22) and a deflector rod spring (24) sleeved on the deflector rod shaft (22), one side of the deflector ring (7) is supported on the deflector ring bracket (8) and the other side is supported on the clutch mechanism, the deflector ring (7) is provided with a guide pin (701) arranged in the arc-shaped slideway (601), the guide pin (701) can move in the arc-shaped slideway (601) along with the rotation of the deflector rod (6) so as to drive the deflector ring (7) to rotate around the central axis of the clutch mechanism, the deflector ring (7) comprises a first joint surface (703) and a second joint surface (703) with different extension heights along the axial direction towards the deflector ring bracket (8), the deflector ring bracket (7) is provided with a guide pin (701) arranged in the arc-shaped slideway (601) so as to enable the deflector ring bracket (8) to be engaged with the boss (801) at a plurality of joint positions of the convex disc (801), and the clutch mechanism is in transmission engagement with the lower fluted disc (60) at a position where the second engagement surface (704) is matched with the boss surface (801).

2. A reduction clutch of a washing machine according to claim 1, characterized in that the upper and lower toothed plates (40, 60) are formed with first and second engagement teeth (3, 4) on opposite sides of each other, respectively, and both ends of the clutch mechanism have upper and lower teeth (51, 52), respectively, which is mounted between the upper and lower toothed plates (40, 60) and can be manipulated to slide toward one of them, so that the first engagement teeth (3) are engaged with the upper or second engagement teeth (51, 4) are engaged with the lower teeth (52).

3. A reduction clutch of a washing machine according to claim 2, characterized in that the clutch mechanism comprises a clutch ring gear (5) and a clutch compression spring (26), the upper tooth portion (51) and the lower tooth portion (52) are respectively formed at both end portions of the clutch ring gear (5), the clutch ring gear (5) is formed with a receiving groove (53) open toward the upper tooth plate (40), and the clutch compression spring (26) is mounted in the receiving groove (53).

4. A reduction clutch of a washing machine according to claim 3, characterized in that the clutch ring gear (5) has a first splined hole (54), and the power input sleeve (12) has a first splined portion (12 a) that is in constant mesh with the first splined hole (54).

5. A reduction clutch of a washing machine according to claim 1, characterized in that the lower toothed disc (60) is integrally formed on a pulley (50), the pulley (50) having a second splined hole (501), the power input shaft (11) having a second splined portion (11 a) interference-fitted with the second splined hole (501).

6. The reduction clutch of a washing machine according to claim 5, characterized in that the pulley (50) has a spline pad (36) provided at an end of the second spline hole (501).

7. A reduction clutch of a washing machine according to any one of claims 1 to 6, characterized in that the dial bracket (8) is mounted to the upper toothed disc (40) by means of a catch (802) and/or a transition inclined surface (706) is formed between the first engagement surface (703) and the second engagement surface (704).

8. A reduction clutch for a washing machine according to any one of claims 1 to 6, characterized in that a guide groove (803) is formed on at least part of the boss surface (801), and the dial ring (7) is formed with a positioning post (707) that mates with the guide groove (803).

9. A reduction clutch of a washing machine according to claim 1, characterized in that the power input shaft (11) has a sun gear (28), the planetary gear set comprising a planet carrier (31), a planet wheel (29) mounted on the planet carrier (31) and meshing with the sun gear (28), an annulus gear (30) surrounding and meshing with the planet wheel (29), the annulus gear (30) being circumferentially coupled to the power input shaft sleeve (12).

10. A reduction clutch of a washing machine according to claim 9, characterized in that the planet carrier (31) is formed with a third splined hole (311), the washing shaft (17) having a third splined portion (17 a) interference-fitted with the third splined hole (311).

11. A reduction clutch of a washing machine according to claim 1, characterized in that the dewatering drive train comprises a brake disc (14) connected between the power input shaft sleeve (12) and the dewatering shaft sleeve (18), the lever (6) being connected with a brake band (13) which can be manipulated to be in contact with or away from the brake disc (14).

12. A reduction clutch of a washing machine according to claim 1, characterized in that the upper toothed disc (40) is formed with an opening (304), through which opening (304) the dial ring (7) extends for operative connection to the clutch mechanism, and/or that the housing (1) is formed with a relief (104) for passage of the dial ring (7) in a position close to the upper toothed disc (40).

13. A reduction clutch of a washing machine according to claim 1, characterized in that the power input sleeve (12) and the dewatering sleeve (18) are respectively fitted with bushings (27) and are respectively pivotally mounted to the housing (1) and the cover plate (10) by means of bearings (16).

14. A washing machine, characterized in that it comprises a reduction clutch according to any one of claims 1 to 13.