Washing machine speed-reduction clutch device and washing machine

Abstract

A washing machine speed-reduction clutch device and a washing machine. The washing machine speed-reduction clutch device comprises an input shaft (1), a first fixed-axis gear train, a second fixed-axis gear train, an output shaft (23) and an output shaft sleeve (22). The input shaft (1) drives the first fixed-axis gear train, the first fixed-axis gear train drives the output shaft (23), the output shaft (23) drives the second fixed-axis gear train, and the second fixed-axis gear train drives the output shaft sleeve (22). Each set of planetary gears in the first fixed-axis gear train and the second fixed-axis gear train is a structure in which metal gears and plastic gears are alternately distributed. A fourth rolling bearing (33) is provided between the output shaft (23) and the output shaft sleeve (22).

Description

A washing machine deceleration clutch device and a washing machine TECHNICAL FIELD

[0001] The present application belongs to the field of washing machine devices, and particularly relates to a washing machine deceleration clutch device and a washing machine. BACKGROUND

[0002] At present, the output shaft of the single / multiple power deceleration clutch is a single / multiple planetary gear train deceleration transmission power during the washing operation of the washing machine, and the gear train generally uses pure plastic or pure metal material; however, the pure plastic material has insufficient torsional strength, and the pure metal material has too much noise. The deceleration clutch is invalid due to the fragmentation of the plastic material, and then the washing action of the entire washing machine is invalid. Moreover, the output shaft is arranged in the output shaft sleeve, the output shaft sleeve is connected to the inner tub of the washing machine, the output shaft is connected to the pulsator or the stirring wheel, and the output shaft is radially supported and axially limited through the two shaft sleeves and the circlip; the shaft sleeve is a radial friction type support structure, and has relatively large noise during operation. When the position or shape of the pulsator or the stirring wheel connected to the output shaft is relatively high, the friction type shaft sleeve is easily worn, the radial gap of the output shaft gradually increases, and at this time, the pulsator or the stirring wheel will pull the output shaft upward, and the output shaft will be directly pulled out under continuous operation, and even the small water seal of the output shaft is invalid and leaks water. Due to the invalidity of the deceleration clutch device, the washing action of the entire washing machine is invalid.

[0003] A clutching and braking structure of a full-automatic washing machine clutch is disclosed in Chinese Patent No. 202222354322.9, which adopts a technical scheme of arranging two sliding bearings between the pulsator shaft (output shaft) and the dehydration shaft (output shaft sleeve), but the sliding bearings have relatively large starting friction resistance, and the operation effect is not good.

[0004] Chinese Patent No. 201510713915.1 discloses a deceleration clutch of a drum washing machine, a drum washing machine and a washing method, and the planetary gears of the deceleration clutch all adopt plastic gears, which causes the problem of insufficient strength. Therefore, it is necessary to ensure the strength while reducing the noise.

[0005] Therefore, 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 to provide a washing machine deceleration clutch device, which can improve the strength of the gear train, realize noise reduction, avoid wear of the output shaft, reduce the rotation resistance of the output shaft, prevent the output shaft from being pulled out upward, and improve the overall strength and noise reduction.

[0007] Another object of the present application is to provide a washing machine.

[0008] To solve the above technical problems, the basic idea of the technical scheme adopted by the present application is:

[0009] A washing machine deceleration clutch device comprises an input shaft, a first fixed shaft gear train, a second fixed shaft gear train, an output shaft and an output shaft sleeve.

[0010] The input shaft drives the first fixed shaft gear train, the first fixed shaft gear train drives the output shaft, the output shaft drives the second fixed shaft gear train, and the second fixed shaft gear train drives the output shaft sleeve. The first fixed shaft gear train comprises two groups of planetary gears, and the second fixed shaft gear train comprises one group of planetary gears. Each group of planetary gears is alternately distributed with metal gears and plastic gears. The output shaft sleeve is provided with an axial through hole, the output shaft is arranged in the axial through hole of the output shaft sleeve, a fourth rolling bearing is arranged between the output shaft and the output shaft sleeve, and a limiting device is arranged on the output shaft sleeve and the output shaft to prevent the output shaft from moving upward.

[0011] Further, the limiting device on the output shaft sleeve, the fourth rolling bearing and the limiting device on the output shaft are sequentially arranged from top to bottom along the axial direction of the output shaft and cooperate with each other.

[0012] Further, the axial through hole of the output shaft sleeve is a stepped hole, the limiting device comprises a first upper step arranged on the wall of the axial through hole of the output shaft sleeve, and the first upper step abuts against the upper end of the outer ring of the fourth rolling bearing. The output shaft is a stepped shaft, the limiting device further comprises a first lower step arranged on the output shaft, and the first lower step supports the lower end of the inner ring of the fourth rolling bearing. The first upper step and the first lower step are radially spaced apart along the output shaft sleeve.

[0013] Further, it further comprises a snap spring located between the first lower step of the output shaft and the lower end of the inner ring of the fourth rolling bearing.

[0014] Further, it further comprises a fifth rolling bearing arranged between the output shaft and the output shaft sleeve and spaced apart from the fourth rolling bearing along the axial direction of the output shaft. The fifth rolling bearing is located above the fourth rolling bearing, and a third lower step is arranged on the wall of the axial through hole of the output shaft sleeve, and the third lower step supports the lower end of the outer ring of the fifth rolling bearing.

[0015] Further, a deceleration clutch device further comprises a fifth rolling bearing arranged between the output shaft and the output shaft sleeve, spaced apart from the fourth rolling bearing along the axial direction of the output shaft and located above or below the fourth rolling bearing. The limiting device further comprises a second upper step arranged on the wall of the axial through hole of the output shaft sleeve, and the second upper step abuts against the upper end of the outer ring of the fifth rolling bearing. The limiting device further comprises a second lower step arranged on the output shaft, and the second lower step supports the lower end of the inner ring of the fifth rolling bearing.

[0016] Further, the speed reduction clutch device further comprises an oil- containing bearing, the fourth rolling bearing and the oil-containing bearing are arranged axially between the output shaft and the output shaft sleeve, and the fourth rolling bearing is located above the oil-containing bearing, the outer periphery of the oil-containing bearing is in interference fit with the axial through hole of the output shaft sleeve, and the inner hole of the oil-containing bearing is in clearance fit with the outer periphery of the output shaft.

[0017] Further, the speed reduction clutch device is provided with an annular groove on the output shaft, the annular groove is located below the oil-containing bearing, the limiting device comprises a circlip, the circlip is arranged in the annular groove and located below the oil-containing bearing, and the circlip is in clearance fit with the lower end of the oil-containing bearing.

[0018] Further, the limiting device further comprises a positioning sleeve, the output shaft is a stepped shaft, the protruding step forms a disc, the disc is located above the fourth rolling bearing, and the positioning sleeve is located above the disc; the outer periphery of the positioning sleeve is in interference fit with the axial through hole of the output shaft sleeve, the inner hole of the positioning sleeve is in clearance fit with the outer periphery of the output shaft, and the lower end of the positioning sleeve is in clearance fit with the upper end of the disc.

[0019] The application further provides a washing machine provided with the speed reduction clutch device.

[0020] Compared with the prior art, the application has the following beneficial effects.

[0021] The speed reduction clutch device for washing machine and the washing machine, wherein the speed reduction clutch device comprises an input shaft, a first fixed shaft gear train, a second fixed shaft gear train, an output shaft and an output shaft sleeve. The input shaft drives the first fixed shaft gear train, the first fixed shaft gear train drives the output shaft, the output shaft drives the second fixed shaft gear train, the second fixed shaft gear train drives the output shaft sleeve, each set of planetary gears in the first fixed shaft gear train and the second fixed shaft gear train is alternately distributed with metal gears and plastic gears, the output shaft sleeve is provided with an axial through hole, the output shaft is arranged in the axial through hole of the output shaft sleeve, a fourth rolling bearing is arranged between the output shaft and the output shaft sleeve, and a limiting device is arranged on the output shaft sleeve and the output shaft to prevent upward movement of the output shaft. The alternately distributed metal gears and plastic gears can realize noise reduction and ensure the strength of the gear train, the fourth rolling bearing can support and reduce noise between the output shaft and the output shaft sleeve, avoid excessive friction and wear, and further avoid the problems of large clearance and water leakage, and the limiting device can prevent upward movement of the output shaft and prevent the output shaft from being pulled out, thereby improving the overall strength of the speed reduction clutch device.

[0022] The specific embodiments of the application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an exemplary embodiment of the application and together with the description, serve to explain the application. Obviously, the drawings shown are only a few embodiments and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings. In the drawings:

[0024] Fig. 1 is a schematic view of the structure of the speed reduction clutch device of the washing machine according to the present application;

[0025] Fig. 2 is a schematic view of the structure of the speed reduction clutch device of the washing machine according to the present application;

[0026] Fig. 3 is a schematic view of the structure of the first fixed shaft wheel frame (part) of the speed reduction clutch device of the washing machine according to the present application;

[0027] Fig. 4 is a schematic view of the structure of the first lower fixed shaft gear of the speed reduction clutch device of the washing machine according to the present application;

[0028] Fig. 5 is a schematic view of the structure of the output shaft gear of the speed reduction clutch device of the washing machine according to the present application;

[0029] Fig. 6 is a schematic view of the structure of the central gear of the speed reduction clutch device of the washing machine according to the present application;

[0030] Fig. 7 is a schematic view of the assembly of the output shaft sleeve and the output shaft of the speed reduction clutch device of the washing machine according to the second embodiment;

[0031] Fig. 8 is a schematic view of the assembly of the output shaft sleeve and the output shaft of the speed reduction clutch device of the washing machine according to the third embodiment;

[0032] Fig. 9 is a schematic view of the assembly of the output shaft sleeve and the output shaft of the speed reduction clutch device of the washing machine according to the fifth embodiment.

[0033] Fig. 10 is a schematic view of the connection of the higher position or shape impeller with the speed reduction clutch device.

[0034] In the figure: 1, input shaft; 1A, input shaft gear; 2, brake wheel shaft; 3, first rolling bearing; 4, one-way brake bearing; 5, output shaft gear; 5A, output shaft gear tooth slot; 6, brake wheel; 8, torque transmission sleeve; 9, clutch sleeve; 10, first gear shaft; 11, first lower fixed shaft gear; 11A, first lower fixed shaft gear tooth slot; 12, first upper fixed shaft gear; 13, first fixed shaft wheel carrier; 13A, first fixed shaft wheel carrier spline slot; 14, second wheel carrier lower cover; 14A, second wheel carrier lower cover spline; 15, inner ring gear; 16, second fixed shaft gear; 17, second gear shaft; 18, second fixed shaft wheel carrier; 19, transmission disc; 19A, transmission disc spline; 19B, transmission disc spline slot; 20, second rolling bearing; 21, third rolling bearing; 22, output shaft sleeve; 23, output shaft; 23A, spline; 24, upper end housing; 25, lower end housing; 26, central gear; 26A, central gear tooth slot; 27, impeller; 28, speed reduction clutch device; 33, fourth rolling bearing; 34, fifth rolling bearing; 35, first upper step; 36, first lower step; 37, second upper step; 38, second lower step; 39, third lower step; 40, snap spring; 44, oil-impregnated bearing; 45, annular groove; 47, positioning sleeve; 48, disc.

[0035] It should be noted that the drawings and the written description are not intended to limit the scope of the present application in any way. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments will be described clearly and completely below with reference to the drawings in the embodiments of the present application. The following embodiments are used to explain the present application but not to limit the scope of the present application.

[0037] In the description of the present application, it should be noted that the terms “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “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 therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0038] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through 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.

[0039] Embodiment one

[0040] In combination with FIGS. 1 and 2, the washing machine speed reduction clutch device of the present application comprises an input shaft 1, a first fixed shaft gear train, a second fixed shaft gear train, an output shaft 23 and an output shaft sleeve 22. The output shaft 23 is arranged in the axial through hole of the output shaft sleeve 22.

[0041] The input shaft 1 transmits power to the first fixed shaft gear train, the first fixed shaft gear train outputs power to the output shaft 23, the output shaft 23 simultaneously transmits power to the second fixed shaft gear train, and the second fixed shaft gear train outputs power to the output shaft sleeve 22.

[0042] The washing machine speed reduction clutch device adopts two sets of fixed shaft gear trains, i.e. the first fixed shaft gear train and the second fixed shaft gear train, to distribute the power input by the input shaft 1 to the output shaft 23 and the output shaft sleeve 22, so that the effect of inputting one power and outputting two powers can be realized by using a simple and stable fixed shaft gear train. Therefore, after the washing machine speed reduction clutch device of the present embodiment is applied to a washing machine, the output shaft 23 and the output shaft sleeve 22 can output two powers during the washing or rinsing process of the washing machine, so that the double-power washing effect is realized, the diversity of the washing water flow is increased, and the washing effect is improved.

[0043] Through the transmission design of the first fixed shaft gear train and the second fixed shaft gear train, the reverse rotation of the output shaft 23 and the output shaft sleeve 22, or the same-direction different-speed rotation of the output shaft 23 and the output shaft sleeve 22 can be realized.

[0044] In order to realize the technical effect of double-power output of the washing machine speed reduction clutch device of the present embodiment, the first fixed shaft gear train comprises a first fixed shaft gear frame 13 fixedly arranged and a first fixed shaft gear set rotatably mounted on the first fixed shaft gear frame 13. The input shaft 1 transmits power to the first fixed shaft gear set of the first fixed shaft gear train, and the power is output to the output shaft 23 after being reduced by the first fixed shaft gear set. The first fixed shaft gear train of the present embodiment transmits the rotation of the input shaft 1 to the output shaft 23 after being reduced, so that the speed reduction transmission connection between the input shaft 1 and the output shaft 23 is realized.

[0045] The first fixed-axle wheel carrier 13 comprises a plurality of first gear shafts 10, the first fixed-axle gear set comprises a first lower fixed-axle gear 11 and a first upper fixed-axle gear 12 mounted on the same first gear shaft 10, the first lower fixed-axle gear 11 is connected to the first upper fixed-axle gear 12 to drive it to rotate synchronously. The first lower fixed-axle gear 11 is a set of planetary gears, and the first upper fixed-axle gear 12 is another set of planetary gears.

[0046] The input shaft 1 is in transmission cooperation with the first lower fixed-axle gear 11 to transmit power to the first lower fixed-axle gear 11, and the first lower fixed-axle gear 11 drives the first upper fixed-axle gear 12 to rotate synchronously, and the first upper fixed-axle gear 12 is in transmission cooperation with the output shaft 23 to drive the output shaft 23 to rotate.

[0047] The first lower fixed-axle gear 11 and the first upper fixed-axle gear 12 mounted on the same first gear shaft 10 constitute a double fixed-axle gear, and the number of teeth of the first lower fixed-axle gear 11 and the first upper fixed-axle gear 12 of the double fixed-axle gear is designed to achieve the purpose of reducing the speed to the set requirement.

[0048] The number of teeth of the first lower fixed-axle gear 11 is greater than that of the first upper fixed-axle gear 12.

[0049] As shown in FIG. 2, the first gear shaft 10 includes three, and each first gear shaft 10 is provided with a first lower fixed-axle gear 11 and a first upper fixed-axle gear 12, thereby ensuring the transmission stability of the input shaft 1 and the first lower fixed-axle gear 11, the output shaft 23 and the first upper fixed-axle gear 12, and ensuring the overall volume of the speed reduction clutch device.

[0050] In other embodiments, when the number of first gear shafts 10 is greater than three, the first lower fixed-axle gears 11 and the first upper fixed-axle gears 12 are correspondingly the same number. In order to ensure the strength of the gear train and reduce the noise of the gear train, and reduce the overall cost of the washing machine speed reduction clutch device, part of the first lower fixed-axle gears 11 are plastic gears, and part of the first lower fixed-axle gears 11 are metal gears, and the plastic gears and metal gears are alternately distributed, that is, the materials of the adjacent two first lower fixed-axle gears 11 are different. When the number of first lower fixed-axle gears 11 is odd, there is one more metal gear than plastic gear, and the two metal gears are adjacent. The first upper fixed-axle gears 12 also adopt the same setting. That is, the same kind of planetary gear of the first fixed-axle gear train adopts the mode of alternately distributing metal gears and plastic gears.

[0051] In order to construct the double fixed-axle gear of the embodiment, as shown in FIG. 4, the first lower fixed-axle gear 11 is provided with a first lower fixed-axle gear tooth groove 11A matched with the tooth shape of the first upper fixed-axle gear 12, one end of the first upper fixed-axle gear 12 is inserted into the first lower fixed-axle gear tooth groove 11A and fixed, and the other end extends out of the first lower fixed-axle gear tooth groove 11A and is in transmission cooperation with the output shaft 23.

[0052] In order to realize the power transmission between the first fixed axis gear set and the input shaft 1 and the output shaft 23, the first fixed axis gear set further comprises an input shaft gear 1A fixedly arranged on the input shaft 1 and simultaneously meshing with all the first lower fixed axis gears 11, and an output shaft gear 5 fixedly arranged on the output shaft 23 and simultaneously meshing with all the first upper fixed axis gears 12.

[0053] The input shaft gear 1A is integrally arranged with the input shaft 1, or the input shaft gear 1A is detachably fixedly arranged at one end of the input shaft 1.

[0054] The second fixed axis gear set of the washing machine deceleration clutch device comprises an inner ring gear 15, a fixedly arranged second fixed axis gear frame 18, a second fixed axis gear set rotatably arranged on the second fixed axis gear frame 18, and a transmission disc 19.

[0055] The output shaft 23 is in transmission cooperation with the second fixed axis gear set to simultaneously transmit the output of the first fixed axis gear set to the second fixed axis gear set, and the second fixed axis gear set is in meshing transmission with the inner ring gear 15 to drive the inner ring gear 15 to rotate.

[0056] The output shaft sleeve 22 and the inner ring gear 15 are fixedly connected with the transmission disc 19 respectively, and the inner ring gear 15 drives the output shaft sleeve 22 to synchronously rotate through the transmission disc 19. The outer circle of the transmission disc 19 is provided with transmission disc plug-in teeth 19A, the inner ring gear 15 is provided with an inner ring gear tooth groove matched with the transmission disc plug-in teeth 19A, the transmission disc plug-in teeth 19A are plugged into the inner ring gear tooth groove to connect the transmission disc 19 and the inner ring gear 15 into an integral whole; the middle through hole of the transmission disc 19 is provided with a transmission disc plug-in tooth groove 19B, and the outer periphery of one end of the output shaft sleeve 22 is provided with an output shaft sleeve plug-in tooth, which is plugged into the transmission disc plug-in tooth groove 19B to connect the output shaft sleeve 22 and the transmission disc 19 into an integral whole.

[0057] The tooth shape of the inner ring gear plug-in tooth groove of the inner ring gear 15 is the same as the inner tooth shape of the inner ring gear, and the teeth of the inner ring gear plug-in tooth groove are connected with the inner teeth of the inner ring gear; one end of the transmission disc plug-in teeth of the transmission disc 19 is provided with a tooth limiting part, and the tooth limiting part abuts against the end surface of the inner ring gear to limit the depth of the transmission disc plug-in teeth 19A inserted into the inner ring gear plug-in tooth groove to prevent the transmission disc plug-in teeth 19A from being inserted into the inner teeth. The tooth limiting part is a limiting end cover arranged at the end of the transmission disc plug-in teeth, which blocks the through hole of the tooth groove of the transmission disc plug-in teeth 19A in the axial direction.

[0058] The output shaft 23 is used as the power output of the washing machine impeller on one hand, and as the power input of the second fixed shaft gear train on the other hand; in addition, the power transmission is reversed through the introduction of the inner ring 15, so that the output shaft sleeve 22 and the output shaft 23 have opposite rotation directions, i.e. the washing barrel connected with the output shaft sleeve 22 and the impeller connected with the output shaft 23 have opposite rotation directions, so as to realize the bidirectional water flow in the washing or rinsing process of the washing machine, and improve the washing effect.

[0059] In order to realize the transmission between the second fixed shaft gear set and the output shaft 23, the second fixed shaft gear train further comprises a central gear 26 fixedly installed on the output shaft, the second fixed shaft gear carrier 18 comprises a plurality of second gear shafts 17, and the second fixed shaft gear set comprises a plurality of second fixed shaft gears 16 rotatably installed on the second gear shafts 17 respectively, the central gear 26 is in external meshing transmission with all the second fixed shaft gears 16, and all the second fixed shaft gears 16 are in internal meshing transmission with the inner ring 15. The second fixed shaft gears 16 are planetary gears.

[0060] As shown in FIG. 2, the second gear shafts 17 are four, and the second fixed shaft gears 16 are also four. In order to ensure the strength of the gear train, reduce the noise of the gear train, and reduce the overall cost of the speed reduction clutch device of the washing machine, two of the four second fixed shaft gears 16 are plastic gears, and the other two are metal gears, and the plastic gears and the metal gears are alternately distributed, i.e. the materials of the adjacent two second fixed shaft gears 16 are different.

[0061] In other embodiments, when the number of the second fixed shaft gears 16 is more, the second fixed shaft gears 16 are arranged in an alternating distribution mode of plastic gears and metal gears, i.e. the materials of the adjacent two second fixed shaft gears 16 are different. When the number of the second fixed shaft gears 16 is odd, there is one more metal gear than plastic gear, and the two metal gears are adjacent. That is, the planetary gears in the second fixed shaft gear train are arranged in an alternating distribution mode of metal gears and plastic gears. The second fixed shaft gears 16 are five, of which two are plastic gears and three are metal gears, and the two metal gears are adjacent.

[0062] The second fixed shaft gear carrier 18 comprises a second carrier upper cover, a second carrier lower cover 14 and the second gear shafts 17 fixedly connecting the second carrier upper cover and the second carrier lower cover 14, and the second fixed shaft gears 16 are rotatably installed on the second gear shafts 17; the second carrier lower cover 14 is fixedly arranged on the first fixed shaft gear carrier 13.

[0063] Specifically, the second carrier lower cover 14 is inserted / coupled on the first fixed shaft gear carrier 13 to realize the relative fixed arrangement.

[0064] Alternatively, the second carrier lower cover 14 is fixedly connected on the first fixed shaft gear carrier 13 through the connecting piece to realize the relative fixed arrangement.

[0065] As an implementation, the middle part of the second wheel bracket lower cover 14 is provided with a second wheel bracket lower cover pin gear 14A, as shown in FIG. 3, the middle part of the first fixed shaft wheel bracket 13 is provided with a first fixed shaft wheel bracket pin gear slot 13A matching the tooth shape of the second wheel bracket lower cover pin gear 14A, and the second wheel bracket lower cover pin gear 14A is inserted into the first fixed shaft wheel bracket pin gear slot 13A to be relatively fixedly arranged.

[0066] Further, the middle part of the second wheel bracket lower cover 14 and the middle part of the first fixed shaft wheel bracket 13 are respectively provided with openings, the first fixed shaft wheel bracket pin gear slot 13A is formed by the inner teeth on the inner wall of the opening of the first fixed shaft wheel bracket, and the opening periphery of the second wheel bracket lower cover extends out a convex ring structure towards the first fixed shaft wheel bracket 13, and the second wheel bracket lower cover pin gear 14A is formed by the outer teeth on the outer wall of the convex ring structure.

[0067] The second gear shaft 17 can be multiple, such as four or five, or other quantities. Each of the second gear shafts 17 is respectively provided with a second fixed shaft gear 16, so as to ensure the transmission stability of the output shaft 23 and the second fixed shaft gear 16, and ensure the overall volume of the speed reduction clutch device.

[0068] In order to realize the fixed installation of the central gear 26 on the output shaft 23, one end of the output shaft 23 is provided with a pin gear 23A, as shown in FIG. 6, the inner wall of the central hole of the central gear 26 is provided with a central gear tooth slot 26A, and the pin gear 23A of the output shaft 23 is inserted into the central gear tooth slot 26A to realize the fixed installation of the output shaft 23 and the central gear 26.

[0069] As shown in FIG. 5, the inner wall of the central hole of the output shaft gear 5 is provided with an output shaft gear tooth slot 5A, and the pin gear 23A of the output shaft 23 is sequentially inserted into the central gear tooth slot 26A and the output shaft gear tooth slot 5A to realize the fixed installation of the central gear 26, the output shaft gear 5 and the output shaft 23.

[0070] The output shaft gear 5 and the central gear 26 are spaced apart, so as to ensure the independence and stability of the output shaft gear 5 and the first fixed shaft wheel system transmission, and the central gear 26 and the second fixed shaft wheel system transmission.

[0071] The washing machine speed reduction clutch device further comprises a brake wheel 6 and a brake wheel shaft 2, the brake wheel 6 has an open internal chamber, the brake wheel shaft 2 is a combination of a disc and a columnar body on one side of the disc, and a through hole penetrating the disc and the columnar body is arranged along the axial direction of the columnar body, the brake wheel shaft 2 is fixed on the open end of the brake wheel 6 by a disc cover, and the input shaft 1 is arranged in the through hole of the brake wheel shaft 2; the first fixed shaft wheel system and the second fixed shaft wheel system are respectively arranged in the internal chamber of the brake wheel 6, and the first fixed shaft wheel bracket 13 of the first fixed shaft wheel system is fixed on the disc of the brake wheel shaft 2.

[0072] The second fixed-axle wheel frame 18 of the second fixed-axle wheel train is fixed on the first fixed-axle wheel frame 13 or the brake wheel shaft 2.

[0073] The brake wheel 6 is provided with a bearing chamber at one end, the second rolling bearing 20 is installed in the bearing chamber, and the output shaft sleeve 22 is movably connected with the brake wheel 6 through the cooperation of the second rolling bearing 20.

[0074] The washing machine speed reduction clutch device comprises an upper end shell 24 and a lower end shell 25, each of which is provided with a bearing chamber, the third rolling bearing 21 is installed in the bearing chamber of the upper end shell 24 and is sleeved outside the output shaft sleeve 22, the first rolling bearing 3 and the one-way brake bearing 4 are installed in the bearing chamber of the lower end shell 25 and are sleeved outside the columnar body of the brake wheel shaft 2, the upper end shell 24 and the lower end shell 25 are fixedly connected through bolts, the brake wheel inner cavity is provided with a two-stage fixed-axle wheel train speed reduction device, the input shaft 1 is arranged in the inner hole of the bearing arranged in the through hole of the columnar body of the brake wheel shaft 2, the output shaft 23 is arranged in the inner hole of the bearing arranged in the axial through hole of the output shaft sleeve 22, and the speed reduction device is connected with the input shaft, the output shaft and the output shaft sleeve respectively.

[0075] The first rolling bearing 3 and the one-way brake bearing 4 support the brake wheel shaft 2, in the washing condition, the brake device tightly holds the brake wheel 6, the brake device and the one-way brake bearing 4 respectively play a braking role in the clockwise and counterclockwise directions of the brake wheel shaft 2 and the brake wheel 6, the freedom degree of the brake wheel 6 in the circumferential direction is limited, the input shaft 1 inputs power, the output shaft 23 and the output shaft sleeve 22 respectively output power with a constant transmission ratio in opposite directions, and the double-drive condition of the inner drum and the impeller of the washing machine in the washing condition is realized.

[0076] The speed reduction device is composed of two sets of fixed-axle wheel trains, i.e., the first fixed-axle wheel train and the second fixed-axle wheel train, the input shaft 1 inputs power, the power is output to the output shaft 23 through the output shaft gear 5 after being reduced by the first fixed-axle wheel train, the washing machine impeller is driven to rotate by the output shaft 23, the power is transmitted to the central gear 26 by the output shaft 23, the power is transmitted to the second fixed-axle wheel train, the power is output to the output shaft sleeve 22 after being reduced by the second fixed-axle wheel train, the inner drum of the washing machine is driven to rotate by the output shaft sleeve 22, one power input is realized, two powers with a constant transmission ratio in opposite directions are output by the output shaft 23 and the output shaft sleeve 22, and the double-drive function of the washing machine is realized.

[0077] The clutch mechanism of the speed reduction clutch device is used for controlling the switching of the separate rotation of the input shaft 1 and the synchronous rotation of the input shaft 1 and the brake wheel shaft 2; when the clutch mechanism controls the separate rotation of the input shaft 1, the input shaft 1 transmits power to the first fixed-axle wheel train, the first fixed-axle wheel train outputs power to the output shaft 23, the output shaft 23 simultaneously transmits power to the second fixed-axle wheel train, the second fixed-axle wheel train outputs power to the output shaft sleeve 22, and the output shaft 23 and the output shaft sleeve 22 rotate in opposite directions.

[0078] When the clutch structure controls the input shaft 1 and the brake wheel shaft 2 to rotate synchronously, the input shaft 1 and the brake wheel shaft 2 drive the brake wheel 6 and the first fixed shaft wheel system and the second fixed shaft wheel system in the inside to rotate synchronously, and the output shaft 23 and the output shaft sleeve 22 rotate at the same speed and in the same direction.

[0079] The clutch mechanism comprises a clutch sleeve 9 and a torque sleeve 8, the torque sleeve 8 is sleeved on the input shaft 1 and rotates integrally with the input shaft 1, and the clutch sleeve 9 is sleeved on the torque sleeve 8 and the brake wheel shaft 2 at the same time. The clutch sleeve 9 is provided with a clamping mechanism inside. When the clamping mechanism is clamped, the torque sleeve 8 and the brake wheel shaft 2 are combined as a whole, and the input shaft 1 drives the brake wheel shaft 2 to rotate synchronously. When the clamping mechanism is released, the torque sleeve 8 and the brake wheel shaft 2 are separated, and the input shaft 1 rotates alone.

[0080] Specifically, the clamping mechanism is a clamping spring, the clutch sleeve 9 is a ratchet wheel, and the clutch mechanism further comprises a pawl matched with the ratchet wheel. The pawl drives the ratchet wheel to achieve the clamping or separation of the clamping spring by controlling the pawl.

[0081] The washing machine deceleration clutch device further comprises a direct drive motor, the direct drive motor comprises a stator and a rotor; the clutch mechanism comprises a torque sleeve fixedly sleeved on the input shaft and a clutch sleeve sleeve sleeved on the brake wheel shaft and slidable along the axial direction of the brake wheel shaft, the brake wheel shaft is movably connected with the clutch sleeve through a spline or a toothed shape, one end of the clutch sleeve is provided with a meshing tooth engaged with the torque sleeve 8, and the torque sleeve 8 is fixedly connected with the rotor by being fixed on the input shaft 1; when the clutch sleeve slides towards the torque sleeve, the meshing tooth at one end of the clutch sleeve is engaged with the torque sleeve, at this time, the torque sleeve 8 is combined with the brake wheel shaft 2, and the input shaft 1 and the brake wheel shaft 2 rotate synchronously under the driving of the rotor of the direct drive motor.

[0082] When the clutch sleeve slides in the opposite direction, the meshing tooth at one end of the clutch sleeve is separated from the torque sleeve 8, and the input shaft 1 rotates alone.

[0083] The clutch mechanism further comprises a yoke, the yoke is forked on the clutch sleeve 9, and the yoke can drive the clutch sleeve 9 to slide along the axial direction of the brake wheel shaft 2.

[0084] Specifically, the clutch mechanism comprises a yoke support, a yoke motor and a rotating cam, the middle part of the yoke is rotatably supported and installed on the yoke support to form a lever structure, the output shaft of the yoke motor is provided with the rotating cam to drive the rotating cam to rotate, and the outer contour of the rotating cam is in contact with one end of the yoke. With the operation of the rotating cam, the other end of the yoke is driven up and down.

[0085] In this embodiment, in order to further reduce noise, improve the working stability, wear resistance and overall strength of the output shaft and the output shaft sleeve, the washing machine deceleration clutch device is provided as follows.

[0086] The washing machine deceleration clutch device further comprises a fourth rolling bearing 33 and a limiting device.

[0087] Referring to Fig. 7, the fourth rolling bearing 33 is arranged between the output shaft 23 and the output shaft sleeve 22. The limiting device is realized by the structural cooperation of the output shaft sleeve 22 and the output shaft 23, and the limiting device prevents the upward movement of the output shaft 23.

[0088] By arranging the fourth rolling bearing 33 between the output shaft 23 and the output shaft sleeve 22, the rolling bearing structure is changed from the original friction type shaft sleeve assembly structure, which avoids the wear caused by excessive friction, reduces the rotation resistance of the output shaft 23, and further causes the gap to become larger and the water leakage problem. During operation, the output shaft 23 rotates relative to the output shaft sleeve 22, and the rolling bearing can not only support but also reduce noise. Since the output shaft 23 will move up and down under the pull of the pulsator or the stirring wheel during the washing process, the limiting device arranged in the present application can prevent the upward movement of the output shaft 23 and prevent the output shaft 23 from being pulled out. In the present application, the upward and downward directions are defined according to the installation state of the deceleration clutch device on the washing machine.

[0089] The limiting device comprises a step protruding radially towards the center in the axial through hole of the output shaft sleeve 22 and a step protruding radially along the outer periphery of the output shaft 23, and the two steps are spaced apart radially.

[0090] Referring to Fig. 7, the axial through hole of the output shaft sleeve 22 is a stepped hole, and the limiting device comprises a first upper step 35 arranged on the wall of the axial through hole of the output shaft sleeve 22, and the first upper step 35 abuts against the upper end of the outer ring of the fourth rolling bearing 33. Since the output shaft sleeve 22 and the output shaft 23 are vertically installed during installation, the first upper step 35 of the output shaft sleeve 22 can prevent the upward movement of the fourth rolling bearing 33.

[0091] The output shaft 23 is a stepped shaft, and the limiting device further comprises a first lower step 36 arranged on the output shaft 23, which supports the lower end of the inner ring of the fourth rolling bearing 33. Therefore, the fourth rolling bearing 33 can prevent the upward movement of the output shaft 23 by the first lower step 36 of the output shaft 23. That is, when the output shaft 23 is pulled upward by the pulsator or the stirring wheel, the first upper step 35 of the output shaft sleeve 22 prevents the upward movement of the fourth rolling bearing 33, and the fourth rolling bearing 33 can also prevent the upward movement of the output shaft 23 by the first lower step 36 of the output shaft 23, thereby achieving the purpose of preventing the upward movement of the output shaft 23 and preventing the output shaft 23 from being pulled out.

[0092] In order to ensure the stable rotation of the output shaft 23, in other embodiments, a plurality of stacked rolling bearings can be arranged axially along the output shaft 23 to form a group of fourth rolling bearings 33.

[0093] To further limit the axial displacement of the fourth rolling bearing 33 during operation, the washing machine deceleration clutch device further comprises a snap spring, which is arranged between the first lower step 36 of the output shaft 23 and the lower end of the inner ring of the fourth rolling bearing 33. The snap spring is sleeved on the outer periphery of the output shaft 23 and is supported by the first lower step 36 of the output shaft 23, and the snap spring can further isolate the contact wear between the rolling bearing and the first lower step 36 of the output shaft 23.

[0094] In the embodiment, the first upper step 35 and the first lower step 36 are radially spaced apart along the output shaft sleeve 22.

[0095] Embodiment two

[0096] Based on the first embodiment, further improvements are made.

[0097] As shown in FIG. 7, a washing machine deceleration clutch device further comprises a fifth rolling bearing 34, which is arranged between the output shaft 23 and the output shaft sleeve 22 and is arranged in axial spacing along the output shaft 23 from the fourth rolling bearing 33. The fourth rolling bearing 33 and the fifth rolling bearing 34 are one of a radial bearing, a thrust bearing, or a radial and thrust bearing.

[0098] In order to ensure the stability of the rotation of the output shaft 23, the present application further provides a fifth rolling bearing 34 between the output shaft 23 and the output shaft sleeve 22, and the fifth rolling bearing 34 is arranged in axial spacing along the output shaft 23 from the fourth rolling bearing 33. Through the fifth rolling bearing 34 and the fourth rolling bearing 33 arranged in spacing, the output shaft 23 can be supported at two places within a certain span, so that the central axis of the output shaft 23 is stable during rotation.

[0099] As shown in FIG. 7, the fifth rolling bearing 34 is located above the fourth rolling bearing 33, and in order to support the fifth rolling bearing 34, a third lower step 39 is provided on the axial through-hole wall of the output shaft sleeve 22, and the third lower step 39 supports the lower end of the outer ring of the fifth rolling bearing 34. Since the fourth rolling bearing 33 and the first upper step 35 of the output shaft sleeve 22 and the first lower step 36 of the output shaft 23 have already achieved the purpose of preventing the upward movement of the output shaft 23, only the third lower step 39 on the axial through-hole wall of the output shaft sleeve 22 is needed to support the fifth rolling bearing 34.

[0100] In the embodiment, since the fifth rolling bearing 34 does not need to be limited above, only the third lower step 39 on the axial through-hole wall of the output shaft sleeve 22 is needed to support the fifth rolling bearing 34 below, as shown in FIG. 7, only one step is needed on the output shaft 23, so that the strength of the output shaft 23 is improved and the processing is simple.

[0101] Embodiment three

[0102] Based on the first embodiment, further improvements are made.

[0103] As shown in Fig. 8, the speed reduction clutch device of the washing machine further comprises a fifth rolling bearing 34, which is arranged between the output shaft 23 and the output shaft sleeve 22 and is arranged axially along the output shaft 23 and spaced from the fourth rolling bearing 33.

[0104] In order to ensure the rotation stability of the output shaft 23, the fifth rolling bearing 34 is arranged between the output shaft 23 and the output shaft sleeve 22 and is arranged axially along the output shaft 23 and spaced from the fourth rolling bearing 33. The fifth rolling bearing 34 and the fourth rolling bearing 33 are arranged in a certain span, so that the output shaft 23 can be supported at two positions, and the central axis of the output shaft 23 is stable during rotation.

[0105] As shown in Fig. 8, the fifth rolling bearing 34 is located above the fourth rolling bearing 33, and the limiting device further comprises a second upper step 37 arranged on the wall of the axial through hole of the output shaft sleeve 22, which abuts against the upper end of the outer ring of the fifth rolling bearing 34; and the limiting device further comprises a second lower step 38 arranged on the output shaft 23, which supports the lower end of the inner ring of the fifth rolling bearing 34.

[0106] Embodiment Four

[0107] The difference between this embodiment and Embodiment Three is that the fifth rolling bearing 34 and the upper step on the output shaft sleeve 22 and the lower step on the output shaft 23 matched with the fifth rolling bearing 34 in Embodiment Three are replaced by the fourth rolling bearing 33 and the upper step on the output shaft sleeve 22 and the lower step on the output shaft 23 matched with the fourth rolling bearing 33, so that it can be fully explained that the fifth rolling bearing 34 can be arranged above or below the fourth rolling bearing 33.

[0108] The fifth rolling bearing 34 is located below the fourth rolling bearing 33, and the limiting device further comprises a second upper step 37 arranged on the wall of the axial through hole of the output shaft sleeve 22, which abuts against the upper end of the outer ring of the fifth rolling bearing 34; and the limiting device further comprises a second lower step 38 arranged on the output shaft 23, which supports the lower end of the inner ring of the fifth rolling bearing 34.

[0109] In the third and fourth embodiments, another structure is adopted which is different from the fifth rolling bearing 34 arrangement in the second embodiment. In order to further limit upward movement of the output shaft 23, the fifth rolling bearing 34 is arranged above or below the fourth rolling bearing 33. The same as the cooperation of the fourth rolling bearing 33 with the output shaft sleeve 22 and the output shaft 23, a second upper step 37 is arranged on the wall of the axial through hole of the output shaft sleeve 22, the second upper step 37 abutting against the upper end of the outer ring of the fifth rolling bearing 34, and a second lower step 38 is arranged on the output shaft 23, the second lower step 38 supporting the lower end of the inner ring of the fifth rolling bearing 34. The upward movement of the fifth rolling bearing 34 is prevented by the second upper step 37 of the output shaft sleeve 22, and the second lower step 38 of the output shaft 23 is pressed by the fifth rolling bearing 34 to prevent upward movement of the output shaft 23, thus achieving the purpose of preventing upward movement of the output shaft 23 and preventing the output shaft 23 from being pulled out. That is, when the output shaft 23 is pulled upward by the impeller or the stirring wheel, the first upper step 35 of the output shaft sleeve 22 and the first lower step 36 of the output shaft 23 cooperating with the fourth rolling bearing 33 can serve as the first limiting measure, and the second upper step 37 of the output shaft sleeve 22 and the second lower step 38 of the output shaft 23 cooperating with the fifth rolling bearing 34 can serve as the second limiting measure. The double limiting measures can enhance the limiting effect, and in the case where one limiting measure fails, the other limiting measure can still ensure that the output shaft 23 is not pulled out axially upward.

[0110] In the second, third or fourth embodiment, the fourth rolling bearing 33 is one rolling bearing or a group of rolling bearings arranged continuously along the output shaft 23 in the axial direction. The fifth rolling bearing 34 is one rolling bearing or a group of rolling bearings arranged continuously along the output shaft 23 in the axial direction.

[0111] In order to ensure effective work of the rolling bearing, stability of the central axis of the output shaft 23 during work, and to enhance the torque of the output shaft 23 for axial stirring, the fourth rolling bearing 33 and the fifth rolling bearing 34 are arranged within a certain span along the output shaft 23 in the axial direction. Further, the fourth rolling bearing 33 is one rolling bearing or a group of rolling bearings arranged continuously along the output shaft 23 in the axial direction, and the fifth rolling bearing 34 is one rolling bearing or a group of rolling bearings arranged continuously along the output shaft 23 in the axial direction. When the fourth rolling bearing 33 or the fifth rolling bearing 34 is a group of rolling bearings, the contact surface of the bearing with the output shaft sleeve 22 and the output shaft 23 can be increased, the overall strength can be improved, and the torque of the output shaft 23 for axial stirring can be enhanced.

[0112] In the second to fourth embodiments, the fourth rolling bearing 33 and the fifth rolling bearing 34 are the same type or a combination of two types of radial bearings, thrust bearings, or radial and thrust bearings.

[0113] The fourth rolling bearing 33 and the fifth rolling bearing 34 can avoid the excessive wear caused by the excessive friction between the output shaft 23 and the output shaft sleeve 22, and can reduce the rotation resistance of the output shaft 23.

[0114] The application also provides a washing machine provided with the above-mentioned speed reduction clutch device.

[0115] When the washing machine is provided with the above-mentioned speed reduction clutch device, if the impeller has a higher height, as shown in Fig. 10, the upward pulling force of the impeller is larger in the washing mode, so that the output shaft 23 connected with the impeller is pulled to move upward. When the rolling bearing is arranged between the output shaft 23 and the output shaft sleeve 22, and the upper step on the wall of the axial through hole of the output shaft sleeve 22 cooperates with the lower step on the outer surface of the output shaft 23 to limit the upward movement of the output shaft 23, the output shaft 23 is prevented from being pulled out upward by the impeller or the stirring wheel. The speed reduction clutch device and the washing machine provided with the above-mentioned structure can realize the alternating distribution of the metal gear and the plastic gear in each set of planetary gears in the first fixed shaft wheel system and the second fixed shaft wheel system, so that the noise reduction and the wheel system strength can be realized. The fourth rolling bearing, the fifth rolling bearing and the limiting device can significantly improve the radial friction resistance of the output shaft, the axial anti-pulling-out and the axial friction resistance, reduce the noise, ensure the service life of the speed reduction clutch device in the adaptation of the stirring type or V-shaped washing machine, and improve the user experience.

[0116] Example five

[0117] As shown in Fig. 9, the application provides a speed reduction clutch device of a washing machine. The fourth rolling device 33 and the oil-containing bearing 44 are arranged along the axial direction between the output shaft 23 and the output shaft sleeve 22.

[0118] The limiting device is arranged between the output shaft sleeve 22 and the output shaft 23 to prevent the upward movement of the output shaft 23.

[0119] The fourth rolling device 33 can play a supporting role to support the rotation of the output shaft 23 in the axial through hole of the output shaft sleeve 22, and can also play a noise reduction role when the output shaft 23 rotates, and the noise is lower than that of the shaft sleeve friction type assembly structure. The arrangement of the fourth rolling device 33 can avoid the excessive wear caused by the friction, so as to prevent the radial gap between the output shaft 23, the output shaft sleeve 22 and the matched components from being enlarged, and further prevent the water leakage. The oil-containing bearing 44 can also play a supporting role to support the rotation of the output shaft 23 in the axial through hole of the output shaft sleeve 22. The cooperation of the fourth rolling device 33 and the oil-containing bearing 44 can reduce the cost and improve the operation effect of the output shaft 23. The limiting device arranged between the output shaft sleeve 22 and the output shaft 23 can prevent the upward movement of the output shaft 23 from being pulled out.

[0120] In order to improve the stability of the rotation of the output shaft 23, the fourth rolling device 33 and the oil-impregnated bearing 44 are arranged axially apart along the output shaft 23, so that the fourth rolling device 33 and the oil-impregnated bearing 44 provide support for the output shaft 23 within a certain span, making the rotation of the output shaft 23 more stable.

[0121] The fourth rolling device 33 is located above the oil-impregnated bearing 44, which is convenient for installation and can prevent the upper part of the output shaft 23 from being worn out when the output shaft 23 rotates, causing the output shaft 23 to shake and water leakage.

[0122] In order to fix the oil-impregnated bearing 44 in the axial through hole of the output shaft sleeve 22, the outer periphery of the oil-impregnated bearing 44 is in interference fit with the axial through hole of the output shaft sleeve 22, and in order to provide support for the output shaft 23 without causing wear, the inner hole of the oil-impregnated bearing 44 is in clearance fit with the outer periphery of the output shaft 23.

[0123] Since the output shaft 23 is pulled upward under washing conditions, in order to limit the upward movement of the output shaft 23, a snap spring 40 is provided as a limiting device. In order to install the snap spring 40, an annular groove 45 is provided on the output shaft 23, and the annular groove 45 is located below the oil-impregnated bearing 44. The snap spring 40 is arranged in the annular groove 45 and below the oil-impregnated bearing 44. When the output shaft 23 is pulled upward, the lower wall of the annular groove 45 on the output shaft 23 is pressed by the snap spring 40, the snap spring 40 is pressed by the oil-impregnated bearing 44, and the oil-impregnated bearing 44 is interference fitted in the axial through hole of the output shaft sleeve 22, so that the upward movement of the output shaft 23 can be prevented.

[0124] Since the snap spring 40 rotates with the output shaft 23, in order to reduce the friction between the snap spring 40 and the oil-impregnated bearing 44, and to avoid the snap spring 40 and the oil-impregnated bearing 44 from having too much space between the lower ends, the snap spring 40 and the oil-impregnated bearing 44 are in clearance fit.

[0125] In this application, the installation state of the deceleration clutch device on the washing machine is used to define up and down. In order to further reduce the possibility of the output shaft 23 being pulled upward, another limiting device, a positioning sleeve 47, is additionally provided. In order to realize the limiting of the output shaft 23 by the positioning sleeve 47, the output shaft is a stepped shaft, and the protruding step forms a disc 48, which is located above the fourth rolling device 33. The positioning sleeve 47 is located above the disc 48, and the outer periphery of the positioning sleeve 47 is in interference fit with the axial through hole of the output shaft sleeve 22. In this way, when the output shaft 23 is pulled upward, the disc 48 on the output shaft 23 is pressed by the positioning sleeve 47, and since the positioning sleeve 47 is fixed by interference fit with the axial through hole of the output shaft sleeve 22, the positioning sleeve 47 can prevent the upward movement of the output shaft 23.

[0126] To avoid the wear caused by the friction between the positioning sleeve 47 and the outer periphery of the output shaft 23, the inner hole of the positioning sleeve 47 is in clearance fit with the outer periphery of the output shaft 23. To avoid the wear caused by the friction between the positioning sleeve 47 and the disc 48, the lower end of the positioning sleeve 47 is in clearance fit with the upper end of the disc 48.

[0127] The fourth rolling device 33 is one or a group of fourth rolling devices 33 arranged continuously along the axial direction of the output shaft 23. When the fourth rolling device 33 is a group of fourth rolling devices 33, the contact area of the bearing with the output shaft sleeve 22 and the output shaft 23 can be increased, the overall strength can be improved, and the torque of the axial agitation of the output shaft 23 can be enhanced.

[0128] When the fourth rolling device 33 is a group, it is one or a combination of more than one of a radial bearing, a thrust bearing, or a radial-thrust bearing.

[0129] In other embodiments, only the snap spring 40 and the matching annular groove 45 on the output shaft 23 can be provided to limit the output shaft 23, preventing the output shaft 23 from being pulled upward by the impeller.

[0130] In other embodiments, only the positioning sleeve 47 and the matching disc on the outer periphery of the output shaft 23 can be provided to limit the output shaft 23, preventing the output shaft 23 from being pulled upward by the impeller.

[0131] To enhance the strength of the output shaft, the axial thickness of the disc 48 on the output shaft 23 can be increased, thereby increasing the diameter of the output shaft and enhancing the strength of the output shaft 23.

[0132] In other embodiments, when the output shaft 23 is pulled upward by the impeller during the washing operation, the output shaft 23 is still rotating at this time. The disc 48 on the output shaft 23 will rub against the positioning sleeve 47. To avoid the wear caused by the friction between the disc 48 and the positioning sleeve 47, a thrust ball bearing is sleeved on the output shaft 23, and the thrust ball bearing is located between the disc 48 and the positioning sleeve 47. Thus, the thrust ball bearing can not only bear the axial load but also avoid the wear between the disc 48 and the positioning sleeve 47. To further reduce the friction and improve the energy efficiency of the rotation of the output shaft, the upper end surface of the thrust ball bearing is in clearance fit with the lower end surface of the positioning sleeve 47.

[0133] In other embodiments, the output shaft sleeve 22 can be provided as a stepped hole, and a step protruding toward the central axis of the axial through hole of the output shaft sleeve 22 can be used to replace the positioning sleeve 47 and cooperate with the disc 48 on the output shaft 23 to limit the output shaft 23 from being pulled upward by the impeller. To avoid the wear caused by the friction between the step and the disc 48, a thrust ball bearing can also be provided between the lower end surface of the step and the disc.

[0134] The application further provides a washing machine comprising the washing machine deceleration clutch device.

[0135] When the washing machine has a higher pulsator, the upward pulling force of the pulsator is larger in the washing mode, so that the output shaft 23 connected with the pulsator is pulled upward. The positioning sleeve 47 is arranged between the output shaft 23 and the output shaft sleeve 22, and the protruding disc is arranged on the outer periphery of the output shaft 23. The output shaft 23 is limited by the disc pressed by the positioning sleeve 47, so as to prevent the output shaft 23 from being pulled out upward by the pulsator. Meanwhile, the second limiting measure is provided, that is, the annular groove 45 is arranged on the output shaft 23, the snap spring 40 is arranged in the annular groove 45, and the oil-containing bearing 44 is arranged in the axial through hole of the output shaft sleeve 22 by interference fit. The snap spring 40 is pressed by the oil-containing bearing 44, and the output shaft 23 is pressed by the snap spring 40, so as to limit the output shaft 23, and prevent the output shaft 23 from being pulled out upward by the pulsator. The double limiting measures can ensure that the output shaft is not pulled out upward by the pulsator.

[0136] In other embodiments, only one of the above limiting measures can be used.

[0137] The deceleration clutch device and the washing machine have the following advantages. The metal gear and the plastic gear are alternately arranged in each group of planetary gears in the first fixed shaft gear train and the second fixed shaft gear train, so that the noise can be reduced and the strength of the gear train can be ensured. The combination of the fourth rolling bearing and the oil-containing bearing and the limiting device can significantly improve the radial friction resistance, the axial anti-pulling-off and the axial friction resistance of the output shaft, reduce the noise, ensure the service life of the deceleration clutch in the adaptive stirring type or V-shaped washing machine, improve the user experience, and reduce the assembly cost.

[0138] The application discloses a washing machine deceleration clutch device, which comprises an input shaft, a first fixed shaft gear train, a second fixed shaft gear train, an output shaft and an output shaft sleeve. The input shaft drives the first fixed shaft gear train, the first fixed shaft gear train drives the output shaft, the output shaft drives the second fixed shaft gear train, the second fixed shaft gear train drives the output shaft sleeve, metal gears and plastic gears are alternately arranged in each set of planetary gears in the first fixed shaft gear train and the second fixed shaft gear train, the output shaft sleeve is provided with an axial through hole, the output shaft is arranged in the axial through hole of the output shaft sleeve, a fourth rolling bearing is arranged between the output shaft and the output shaft sleeve, and a limiting device is arranged on the output shaft sleeve and the output shaft to prevent the output shaft from moving upward. The alternately arranged metal gears and plastic gears can realize noise reduction and ensure the strength of the gear train, the fourth rolling bearing can support and reduce noise between the output shaft and the output shaft sleeve, avoid excessive friction and wear, and further avoid the problems of large clearance and water leakage, and the limiting device can prevent the upward movement of the output shaft and prevent the output shaft from being pulled out, thereby improving the overall strength of the deceleration clutch device.

[0139] The above description is only the preferred embodiment of the application, and does not limit the application in any form. Although the application has been disclosed as above, it is not intended to limit the application. Any skilled person in the art can make some changes or modifications to the above-mentioned technical content without departing from the technical solution of the application, and the above-mentioned embodiments can be further combined or replaced. However, any simple modification, equivalent change and modification made according to the technical essence of the application to the above-mentioned embodiments still belong to the scope of the application.

Claims

1. A speed reduction clutch device for a washing machine, characterised in that: The device comprises an input shaft, a first fixed shaft wheel system, a second fixed shaft wheel system, an output shaft and an output shaft sleeve, The input shaft drives the first fixed shaft wheel system, and the first fixed shaft wheel system drives the output shaft. The output shaft drives the second fixed shaft wheel system, and the second fixed shaft wheel system drives the output shaft sleeve. The output shaft sleeve is provided with an axial through hole, and the output shaft is arranged in the axial through hole of the output shaft sleeve. The fourth rolling bearing is arranged between the output shaft and the output shaft sleeve. The limiting device is arranged on the output shaft sleeve and the output shaft to prevent the upward movement of the output shaft. The limiting device on the output shaft sleeve, the fourth rolling bearing and the limiting device on the output shaft are sequentially arranged from top to bottom along the axial direction of the output shaft and cooperated with each other.

2. A reduction clutch device according to claim 1, characterized in that: The axial through hole of the output shaft sleeve is a stepped hole, and the limiting device comprises a first upper step arranged on the wall of the axial through hole of the output shaft sleeve. The output shaft is a stepped shaft, and the limiting device further comprises a first lower step arranged on the output shaft. The first upper step and the first lower step are radially spaced apart from each other.

3. A reduction clutch device according to claim 2, wherein: The clamping spring is arranged between the first lower step of the output shaft and the lower end of the inner ring of the fourth rolling bearing.

4. A reduction clutch device according to claim 3, wherein: The fifth rolling bearing is arranged between the output shaft and the output shaft sleeve and is arranged in the axial direction of the output shaft and spaced apart from the fourth rolling bearing. The fifth rolling bearing is arranged above the fourth rolling bearing, and a third lower step is arranged on the wall of the axial through hole of the output shaft sleeve and supports the lower end of the outer ring of the fifth rolling bearing.

5. A reduction clutch device according to claim 3, wherein: The fifth rolling bearing is arranged between the output shaft and the output shaft sleeve, is arranged in the axial direction of the output shaft and spaced apart from the fourth rolling bearing, and is arranged above or below the fourth rolling bearing.

6. A reduction clutch device according to claim 3, wherein: The limiting device further comprises a second upper step arranged on the wall of the axial through hole of the output shaft sleeve and supporting the upper end of the outer ring of the fifth rolling bearing.

7. A reduction clutch device according to claim 6, wherein: The limiting device further comprises a second lower step arranged on the output shaft and supporting the lower end of the inner ring of the fifth rolling bearing.

8. A reduction clutch device according to claim 7, wherein: The oil-containing bearing is arranged between the output shaft and the output shaft sleeve in the axial direction and spaced apart from the fourth rolling bearing, and the fourth rolling bearing is arranged above the oil-containing bearing. The outer periphery of the oil-containing bearing is in interference fit with the axial through hole of the output shaft sleeve, and the inner hole of the oil-containing bearing is in clearance fit with the outer periphery of the output shaft. The annular groove is arranged below the oil-containing bearing, and the clamping spring is arranged in the annular groove and below the oil-containing bearing.

9. A reduction clutch device according to any one of claims 1 to 8, characterized in that: The limiting device further comprises a positioning sleeve, 10. A laundry machine characterized by: The output shaft is a stepped shaft, and the protruding step forms a disc, and the disc is arranged above the fourth rolling bearing. The outer periphery of the positioning sleeve is in interference fit with the axial through hole of the output shaft sleeve, the inner hole of the positioning sleeve is in clearance fit with the outer periphery of the output shaft, and the lower end of the positioning sleeve is in clearance fit with the upper end of the disc. Each group of planetary gears in the first fixed shaft wheel system and the second fixed shaft wheel system comprises metal gears and plastic gears alternately arranged. The output shaft of the speed reduction clutch device is connected with the impeller of the washing machine, and the upper end of the output shaft sleeve of the speed reduction clutch device is connected with the inner drum of the washing machine.

Images