Deceleration clutch device and washing machine

Abstract

The speed reduction clutch device comprises an upper end shell, an output shaft, an output shaft sleeve and a limiting device, the upper end shell is provided with a stepped hole, the output shaft sleeve is arranged in the stepped hole in a penetrating mode, and the output shaft is arranged in an axial through hole of the output shaft sleeve in a penetrating mode. A bearing is arranged between the output shaft and the output shaft sleeve in the axial direction, and limiting devices matched with each other are arranged on the output shaft sleeve and the output shaft to prevent the output shaft from moving upwards. And annular multi-lip water seals are respectively arranged between the output shaft and the output shaft sleeve and between the output shaft sleeve and the stepped hole wall of the upper end shell. By the adoption of the structure, the radial friction resistance of the output shaft can be remarkably improved, the axial pull-off prevention capacity and the axial friction resistance capacity can be remarkably improved, noise is lowered, the sealing effect can be further enhanced under the condition that the output shaft bears large tension through the arrangement of the multi-lip water seal, and the service life of the output shaft is prolonged. The service life of the speed reduction clutch device is prolonged when the speed reduction clutch device is matched with a stirring type or V-shaped washing machine, and user experience is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of washing machines, and particularly relates to a deceleration clutch device and a washing machine. BACKGROUND

[0002] At present, the single-power or multi-power deceleration clutch device of the conventional washing machine mainly comprises a braking system, a clutch system, a transmission system and a sealing system.

[0003] In the washing condition, the output shaft of the single-power or multi-power deceleration clutch device is driven by the upper planet carrier, the output shaft is arranged in the output shaft sleeve, the output shaft sleeve is connected to the inner drum 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 by two shaft sleeves and a clasp spring; when the position or shape of the pulsator or the stirring wheel connected to the output shaft is high, the pulsator or the stirring wheel will pull the output shaft upward, and under continuous operation, the output shaft will be directly pulled out, and even the small water seal of the output shaft will be invalid and water will leak, and due to the failure of the deceleration clutch device, the washing action of the whole washing machine will fail. In addition, when the position or shape of the pulsator or the stirring wheel connected to the output shaft is high, the load such as clothes is easy to be wound around the pulsator and cause the pulsator to be stuck.

[0004] A Chinese patent with the application number 202222354322.9 discloses a clutching and braking structure of a full-automatic washing machine clutch, 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 starting friction resistance of the sliding bearings is large, and the operation effect is poor.

[0005] Therefore, the utility model is provided. UTILITY MODEL CONTENTS

[0006] The utility model solves the technical problem in the prior art, provides a deceleration clutch device, can improve the axial anti-pulling-out capability, can improve the radial and axial friction resistance of the pulsator shaft, and has good water seal sealing effect.

[0007] Another purpose of the utility model is to provide a washing machine.

[0008] To solve the above technical problems, the basic idea of the technical scheme of the utility model is as follows:

[0009] The application relates to a deceleration clutch device which comprises an upper end shell, an output shaft, an output shaft sleeve and a limiting device, the upper end shell is provided with a stepped hole, the output shaft sleeve is arranged in the stepped hole, 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, bearings are arranged between the output shaft and the output shaft sleeve in the axial direction, limiting devices arranged on the output shaft sleeve and the output shaft are matched to prevent the output shaft from moving upward; the device further comprises water seals, annular multi-lip water seals are arranged between the output shaft and the output shaft sleeve and between the stepped hole wall of the upper end shell and the output shaft sleeve.

[0010] Further, the axial through hole of the output shaft sleeve is a stepped hole, the limiting device comprises an upper step arranged on the axial through hole wall of the output shaft sleeve, the output shaft is a stepped shaft, and the limiting device further comprises a lower step arranged on the output shaft, the upper step pressing the lower step.

[0011] Further, the deceleration clutch device further comprises a clamping spring, an annular groove is arranged on the output shaft, the annular groove is located above the bearing, and the clamping spring is arranged in the annular groove.

[0012] Further, the clamping spring is matched with the upper end gap of the bearing.

[0013] By arranging the bearings between the output shaft and the output shaft sleeve in the axial direction, the bearings can support the output shaft to rotate in the axial through hole of the output shaft sleeve, the limiting cooperation of the upper step arranged on the output shaft sleeve and the lower step arranged on the output shaft can prevent the output shaft from being pulled out by moving upward, and by clamping the clamping spring in the annular groove of the output shaft and supporting the clamping spring with the upper end of the bearing, the output shaft can be prevented from moving downward.

[0014] Further, the bearings comprise a group of bearings arranged continuously or at intervals in the axial direction of the output shaft.

[0015] Further, the bearings comprise a group of needle bearings or a group of ball bearings or a combination of needle bearings and ball bearings or a group of oil-containing bearings arranged in the axial direction of the output shaft.

[0016] Further, a first water seal between the output shaft and the output shaft sleeve is arranged above the clamping spring; four lips are arranged at intervals in the axial direction of the output shaft on the inner side of the first water seal and are in contact with the outer periphery of the output shaft, two lips located above among the four lips extend obliquely from bottom to top and towards the output shaft, the third lip below extends vertically towards the output shaft, and the lowermost lip extends obliquely from top to bottom and towards the output shaft.

[0017] Further, a second water seal between the output shaft sleeve and the stepped hole wall of the upper end shell is provided with four lips from a first lip to a fourth lip on the inner side of the second water seal from top to bottom and in contact with the outer periphery of the output shaft sleeve, the first lip and the third lip extend obliquely from bottom to top and towards the output shaft sleeve, the second lip and the fourth lip extend vertically towards the output shaft.

[0018] The utility model discloses further propose washing machine, install above-mentioned deceleration clutch device.

[0019] Further, the pulsator of the washing machine comprises an upper part and a lower part which are connected to each other but can move relatively, the lower part of the pulsator is connected to the output shaft, the upper part of the pulsator can move back and forth in the axial direction relative to the lower part, and the upper part of the pulsator can rotate back and forth within a set angle range relative to the lower part.

[0020] After the technical scheme is adopted, the utility model has the following beneficial effects compared with the prior art.

[0021] The utility model discloses a deceleration clutch device and washing machine, wherein the deceleration clutch device comprises an upper end shell, an output shaft, an output shaft sleeve and a limiting device, the upper end shell is provided with a stepped hole, the output shaft sleeve is arranged in the stepped hole, 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 bearing is arranged between the output shaft and the output shaft sleeve in the axial direction, and the limiting device arranged on the output shaft sleeve and the output shaft is matched to prevent the upward movement of the output shaft, and the utility model further comprises a water seal, which is arranged between the output shaft and the output shaft sleeve and between the stepped hole wall of the upper end shell and the output shaft sleeve respectively in a ring-shaped multi-lip water seal. The deceleration clutch device and the washing machine with the above structure can significantly improve the radial friction resistance of the output shaft, the axial anti-pulling-off and axial friction resistance, reduce noise, and the multi-lip water seal can further enhance the sealing effect under the condition that the output shaft is subjected to a large pulling force, thereby ensuring the service life of the deceleration clutch device when it is adapted to a stirring type or V-shaped washing machine and improving the user experience.

[0022] The specific embodiments of the utility model will be described in further detail below with reference to the drawings. DRAWINGS

[0023] The drawings are part of the utility model and serve to provide a further understanding of the utility model, and the illustrative embodiments of the utility model and the description thereof serve to explain the utility model but do not constitute an improper limitation on the utility model. Obviously, the drawings described below are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor. In the drawings:

[0024] Figure 1 is the three-dimensional structure explosion schematic diagram of the deceleration clutch device of the utility model;

[0025] Figure 2 is the output shaft sleeve, output shaft, water seal, bearing and upper end shell assembly half-section schematic diagram of the deceleration clutch device in the utility model;

[0026] Figure 3 is the schematic diagram of the connection between the pulsator with higher position or shape and the deceleration clutch device.

[0027] Fig. 1, input shaft; 1A, input shaft gear; 2, brake axle; 5, output shaft gear; 5A, output shaft gear tooth slot; 6, brake wheel; 10, first gear shaft; 11, first lower fixed shaft gear; 12, first upper fixed shaft gear; 13, first fixed shaft wheel frame; 14, second wheel frame lower cover; 14A, second wheel frame lower cover spline; 15, inner ring gear; 16, second fixed shaft gear; 17, second gear shaft; 18, second fixed shaft wheel frame; 19, transmission disc; 19A, transmission disc spline; 19B, transmission disc spline slot; 22, output shaft sleeve; 23, output shaft; 23A, spline; 24, upper end shell; 26, central gear; 27, impeller; 271, upper portion; 272, lower portion; 28, speed reduction clutch device; 33, first needle bearing; 34, second needle bearing; 35, upper step; 36, lower step; 37, first water seal; 38, expansion spring; 39, circlip; 40, second water seal; 401, inner ring; 402, connecting portion; 403, outer ring.

[0028] 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

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments will be described clearly and completely below with reference to the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but not to limit the scope of the present application.

[0030] 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 shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply 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 a limitation on the present application.

[0031] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, 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 an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] As Figure 1As shown, a speed reduction clutch device 28 includes 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.

[0033] 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.

[0034] The first fixed shaft gear train includes a fixed first fixed shaft gear frame 13 and a rotatable first fixed shaft gear set installed on the first fixed shaft gear frame 13. The first fixed shaft gear set includes a first lower fixed shaft gear 11 and a first upper fixed shaft gear 12 installed on the same first gear shaft 10. The first lower fixed shaft gear 11 is connected to the first upper fixed shaft gear 12 to drive it to rotate synchronously. Both the first lower fixed shaft gear 11 and the first upper fixed shaft gear 12 are planetary gears.

[0035] The first lower fixed shaft gear 11 and the first upper fixed shaft gear 12 installed on the same first gear shaft 10 constitute a double fixed shaft gear. The number of teeth of the first lower fixed shaft gear 11 and the first upper fixed shaft gear 12 of the double fixed shaft gear is designed to achieve the purpose of speed reduction to the set requirement.

[0036] The first fixed shaft gear train further includes an input shaft gear 1A and an output shaft gear 5. The input shaft gear 1A is fixedly arranged on the input shaft 1. The input shaft gear 1A is in meshing transmission with all the first lower fixed shaft gears 11,

[0037] The inner wall of the central hole of the output shaft gear 5 is provided with an output shaft gear tooth groove 5A. The spline 23A of the output shaft 23 is inserted into the central gear tooth groove to fix the output shaft gear 5 on the output shaft 23. The output shaft gear 5 is in meshing transmission with all the first upper fixed shaft gears 12.

[0038] The input shaft 1 transmits power to the first fixed shaft gear set of the first fixed shaft gear train. The input shaft 1 is in transmission cooperation with the first lower fixed shaft gear 11 through the input shaft gear 1A to transmit power to the first lower fixed shaft gear 11. The first lower fixed shaft gear 11 drives the first upper fixed shaft gear 12 to rotate synchronously. The first upper fixed shaft gear 12 drives the output shaft 23 to rotate through the transmission cooperation of the output shaft gear 5 and the output shaft 23. The power is transmitted from the input shaft 1 to the output shaft 23 through the first fixed shaft gear set for speed reduction.

[0039] The second fixed shaft gear train of the speed reduction clutch device 28 includes an inner ring gear 15, a fixed second fixed shaft gear frame 18 and a rotatable second fixed shaft gear set installed on the second fixed shaft gear frame 18, and further includes a transmission disc 19. The second fixed shaft gear set includes a plurality of second fixed shaft gears 16, constituting a group of planetary gears, located inside the inner ring gear 15.

[0040] The output shaft 23 is in transmission cooperation with the second fixed shaft gear set to simultaneously transmit the output of the first fixed shaft gear set to the second fixed shaft gear set, and the second fixed shaft gear set is in meshing transmission with the inner ring gear 15 to drive the inner ring gear 15 to rotate.

[0041] In order to realize the transmission between the second fixed shaft gear set and the output shaft 23, the second fixed shaft gear set further comprises a central gear 26 fixedly installed on the output shaft, and the central gear 26 is in meshing transmission with all the second fixed shaft gears 16. One end of the output shaft 23 is provided with a spline 23A, and the inner wall of the central gear hole of the central gear 26 is provided with a central gear tooth groove. The spline 23A of the output shaft 23 is inserted into the central gear tooth groove to realize the fixed installation of the output shaft 23 and the central gear 26.

[0042] The spline 23A of the output shaft 23 is sequentially inserted into the central gear tooth groove and the output shaft gear tooth groove 5A to realize the fixed installation of the central gear 26, the output shaft gear 5 and the output shaft 23. The output shaft gear 5 and the central gear 26 are arranged in a spaced manner, so as to ensure the independence and stability of the transmission between the output shaft gear 5 and the first fixed shaft gear set and the transmission between the central gear 26 and the second fixed shaft gear set.

[0043] The transmission disc 19 is connected with the inner ring gear 15 as a whole; the middle part of the transmission disc 19 is provided with a transmission disc spline slot 19B, and one end of the outer periphery of the output shaft sleeve 22 is provided with an output shaft sleeve spline which is inserted into the transmission disc spline slot 19B to connect the output shaft sleeve 22 and the transmission disc 19 as a whole.

[0044] 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 rotate synchronously through the transmission disc 19. The outer circle of the transmission disc 19 is provided with a transmission disc insertion tooth 19A, the inner ring gear 15 is provided with an inner ring gear tooth groove matched with the transmission disc insertion tooth 19A, the transmission disc insertion tooth 19A is inserted into the inner ring gear tooth groove to connect the transmission disc 19 and the inner ring gear 15 as a whole; the middle part of the transmission disc 19 is provided with a transmission disc spline slot 19B in the through hole, and one end of the outer periphery of the output shaft sleeve 22 is provided with an output shaft sleeve spline which is inserted into the transmission disc spline slot 19B to connect the output shaft sleeve 22 and the transmission disc 19 as a whole.

[0045] The output shaft 23 is used as the power output of the washing machine impeller on one hand, and is used as the power input of the second fixed shaft gear set on the other hand; in addition, the introduction of the inner ring gear 15 realizes the reversing of the power transmission, so that the output shaft sleeve 22 and the output shaft 23 have opposite rotation directions, that is, the washing barrel of the washing machine connected with the output shaft sleeve 22 and the impeller of the washing machine connected with the output shaft 23 have opposite rotation directions.

[0046] The deceleration clutch device 28 further comprises a brake wheel 6 and a brake wheel shaft 2, the brake wheel 6 has an open inner chamber inside, the brake wheel shaft 2 is a combination of a disc and a column body located on one side of the disc, a through hole penetrating the disc and the column body is arranged along the axial direction of the column 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.

[0047] The second fixed shaft wheel frame 18 comprises a second wheel frame upper cover, a second wheel frame lower cover 14 and a second gear shaft 17 fixedly connecting the second wheel frame upper cover and the second wheel frame lower cover 14, and the second fixed shaft gear 16 is rotatably arranged on the second gear shaft 17.

[0048] The middle part of the second wheel frame lower cover 14 and the middle part of the first fixed shaft wheel frame 13 are respectively provided with openings, the inner teeth are arranged on the inner wall of the opening of the first fixed shaft wheel frame 13 to form a first fixed shaft wheel frame pinion slot, the periphery of the opening of the second wheel frame lower cover 14 extends towards the first fixed shaft wheel frame 13 to form a convex ring structure, and the outer teeth are arranged on the outer wall of the convex ring structure to form a second wheel frame lower cover pinion 14A. The tooth shape of the first fixed shaft wheel frame pinion slot matches that of the second wheel frame lower cover pinion 14A, the second wheel frame lower cover pinion 14A is inserted into the first fixed shaft wheel frame pinion slot to be fixedly arranged relative to each other, so that the second fixed shaft wheel frame 18 of the second fixed shaft wheel system is fixed on the first fixed shaft wheel frame 13.

[0049] The deceleration clutch device 28 comprises an upper end shell 24, the upper end shell 24 is sleeved on the outer side of the output shaft sleeve 22 through a central hole, a bearing is arranged between the upper end shell 24 and the output shaft sleeve 22, and the deceleration clutch device 28 is fixed on the outer barrel of the washing machine by the upper end shell 24.

[0050] The first gear shaft 10 comprises three, and the first lower fixed shaft gear 11 and the first upper fixed shaft gear 12 are arranged on each first gear shaft 10.

[0051] In other embodiments, when the number of the first gear shaft 10 is more, the number of the first lower fixed shaft gear 11 and the first upper fixed shaft gear 12 is also the same. In order to ensure the strength of the wheel system, reduce the noise of the wheel system and reduce the overall cost of the deceleration clutch device 28, part of the first lower fixed shaft gear 11 is a plastic gear, part of the first lower fixed shaft gear 11 is a metal gear, and the plastic gears and the metal gears are alternately distributed. That is, the same kind of planetary gear of the first fixed shaft wheel system is arranged in an alternating distribution mode of metal gears and plastic gears.

[0052] When the second gear shaft 17 is four, the second fixed shaft gear 16 is also four.

[0053] In other embodiments, when the number of the second fixed shaft gear 16 is more, the setting mode is that the plastic gear and the metal gear are alternately distributed, that is, the materials of the adjacent two second fixed shaft gears 16 are different.

[0054] The speed reduction clutch device in the utility model, such as Figure 2 The output shaft sleeve 22 is provided with an axial through hole, the output shaft 23 is arranged in the axial through hole of the output shaft sleeve 22, a bearing is arranged between the output shaft 23 and the output shaft sleeve 22 along the axial direction, and the output shaft sleeve 22 and the output shaft 23 are provided with limiting devices matched with each other to prevent the upward movement of the output shaft 23. The axial through hole of the output shaft sleeve 22 is a stepped hole, the limiting device comprises an upper step 35 arranged on the wall of the axial through hole of the output shaft sleeve 22, since the axial through hole of the output shaft sleeve 22 is a stepped hole, the upper step 35 is bounded, the inner diameter of the hole below the upper step 35 is large, the inner diameter of the hole above the upper step 35 is small, and therefore the upper step 35 is formed to protrude inward. The output shaft 23 is a stepped shaft, and the limiting device further comprises a lower step 36 arranged on the output shaft 23 and protruding outwardly.

[0055] The speed reduction clutch device further comprises a clamping spring 39, the output shaft 23 is provided with an annular groove, the annular groove is located above the bearing, and the clamping spring 39 is arranged in the annular groove. The clamping spring 39 is matched with the gap at the upper end of the bearing.

[0056] By arranging the bearing between the output shaft 23 and the output shaft sleeve 22 along the axial direction, the bearing can support the rotation of the output shaft 23 in the axial through hole of the output shaft sleeve 22, the limiting cooperation of the upper step 35 arranged on the output shaft sleeve 22 and the lower step 36 arranged on the output shaft 23 can prevent the upward movement of the output shaft 23 from being pulled out, the arrangement of the bearing can avoid excessive friction and wear between the output shaft 23 and the output shaft sleeve 22, the radial gap becomes large, and water leakage occurs, the bearing can support and reduce noise, the clamping spring 39 is clamped in the annular groove of the output shaft 23, and the clamping spring 39 is matched with the support at the upper end of the bearing, so that the downward movement of the output shaft 23 can be prevented, and the relatively large upward axial force and the appropriate downward axial force can be adapted.

[0057] The lower step arranged at the lower part of the output shaft 23 can effectively improve the axial anti-pulling-off capability of the output shaft 23. Compared with the axial anti-pulling-off capability of the circlip arranged at the lower part of the output shaft 23, the lower step 36 of the output shaft 23 has stronger anti-pulling-off capability than the circlip, and the service life is obviously improved.

[0058] In order to better support the output shaft 23 by the bearing, the bearing comprises a group of bearings arranged continuously or at intervals along the output shaft 23. The bearing comprises a group of needle bearings or a group of ball bearings or a combination of needle bearings and ball bearings arranged along the output shaft 23, or the bearing comprises a group of oil-containing bearings or a combination of needle bearings and oil-containing bearings or a combination of ball bearings and oil-containing bearings arranged along the output shaft 23. In the embodiment, the bearing comprises a first upper needle bearing 33 and a second lower needle bearing 34. The lower end of the outer ring of the first needle bearing 33 is supported by the step of the inner wall of the output shaft sleeve 22, and the upper end of the first needle bearing 33 can support the circlip 39.

[0059] In order to enable the whole speed reduction clutch device to be installed on the washing machine, the speed reduction clutch device further comprises an upper end shell 24 and a lower end shell. The upper end shell 24 and the lower end shell clasp part of the other components of the speed reduction clutch device in the cavity formed by the upper end shell 24 and the lower end shell, and the whole speed reduction clutch device is installed on the washing machine by cooperating the bolt holes on the upper end shell 24 and the lower end shell with bolts.

[0060] The upper end shell 24 is provided with a stepped hole, and the output shaft sleeve 22 is arranged in the stepped hole.

[0061] The speed reduction clutch device further comprises a water seal. Annular multi-lip water seals are respectively arranged between the output shaft 23 and the output shaft sleeve 22, and between the output shaft sleeve 22 and the stepped hole wall of the upper end shell 24 of the speed reduction clutch device. The multi-lip water seal comprises a first water seal 37 between the output shaft 23 and the output shaft sleeve 22, and a second water seal 40 between the output shaft sleeve 22 and the stepped hole wall of the upper end shell 24.

[0062] The first water seal 37 is arranged above the circlip 39. In order to further improve the sealing effect of the first water seal 37, four lips are arranged at the inner side of the first water seal 37 along the output shaft 23 from top to bottom in the state of being installed on the washing machine. The four lips are in contact with the outer wall of the output shaft. The upper two lips of the four lips extend from bottom to top and obliquely towards the output shaft 23, the lower third lip extends vertically towards the output shaft 23, and the lowermost fourth lip extends from top to bottom and obliquely towards the output shaft 23.

[0063] To ensure the sealing effect of the first water seal 37 and improve the contact between the first water seal 37 and the output shaft, a tension spring 38 is fitted around the outer periphery of the first water seal 37, located between the third lip and the fourth lip. In other embodiments, to further ensure the sealing effect of the first water seal 37, multiple tension springs 38 can be fitted axially around the outer periphery of the first water seal 37.

[0064] Since the four lips of the first water seal 37 extend in different directions, including those extending obliquely upwards, downwards, and perpendicular to the output shaft, the lips of the first water seal 37 swing when the output shaft 23 moves slightly upwards or downwards. However, the deformation of the lips of the first water seal 37 is different, which ensures that at least one lip is in close contact with the outer periphery of the output shaft to achieve a sealing effect.

[0065] The outer periphery of the first water seal 37 is cylindrical at least within the height range corresponding to the root of the second lip, thereby ensuring a tight seal between the outer periphery of the first water seal 37 and the inner periphery of the output shaft sleeve 22. In other embodiments, to improve the sealing effect, the cylindrical surface of the outer periphery of the first water seal 37 extends down to between the second and third lips.

[0066] To enhance the sealing effect between the outer side of the output shaft sleeve 22 and the upper end shell 24 of the reduction clutch device 28, an annular second water seal 40 is provided between the outer side of the output shaft sleeve 22 and the upper end shell 24 of the reduction clutch device 28. The second water seal 40 includes two annular portions, an inner ring 401 and an outer ring 403, and a connecting portion 402. The inner ring 401 is provided with four lips.

[0067] The upper housing 24 of the deceleration clutch device 28 has a stepped hole, through which the output shaft sleeve 22 passes. The outer circumference of the outer ring 403 of the second water seal 40 is provided with a cylindrical surface that fits and seals against the wall of the stepped hole in the upper housing 24 of the deceleration clutch device 28. The inner ring 401 and the outer ring 403 of the second water seal 40 are connected by a connecting part 402. One end of the connecting part 402 is connected to the middle of the outer side of the inner ring 401, thus leaving the outer circumference of other parts of the inner ring 401 unobstructed; the other end of the connecting part 402 is connected to the inner side of the outer ring 403. Figure 2 As shown, viewed from half of the longitudinal section, the connecting part 402 is folded. The connecting part 402 includes a U-shaped bend and a cross arm. The top of the outer arm of the U-shaped bend connects to the inner side of the outer ring 403, and the top of the inner arm of the U-shaped bend connects to the cross arm. The cross arm connects to the middle of the outer side of the inner ring 401. The bottom end of the U-shaped bend of the connecting part 402 has a flat portion, which is flush with the bottom end of the outer ring 403 and fits against the stepped hole of the upper end shell 24.

[0068] In order to further improve the sealing effect of the second water seal 40, in the state of being installed on the washing machine, four lips, i.e. a first lip, a second lip, a third lip and a fourth lip, are arranged on the inner side of the inner ring 401 of the second water seal 40 along the output shaft sleeve 22 in the axial direction from top to bottom and are in contact with the outer periphery of the output shaft sleeve 22. The first lip and the third lip among the four lips extend obliquely from bottom to top and towards the output shaft sleeve 22, and the second lip and the fourth lip extend vertically towards the output shaft. Two expansion springs 38 are arranged on the outer periphery of the inner ring 401 of the second water seal 40, and the expansion springs 38 are respectively located at the root of the second lip and the root of the fourth lip.

[0069] The utility model discloses still propose washing machine, install above-mentioned deceleration clutch device, and washing machine passes through using above-mentioned deceleration clutch device, when having higher pulsator 27, like Figure 3 As shown, under the washing condition, the upward pulling force of the pulsator 27 will be larger, thereby pulling the output shaft 23 connected therewith 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 part of the output shaft 23 to limit the upward movement of the output shaft 23, thereby effectively preventing the output shaft 23 from being pulled out upward by the pulsator or the stirring wheel.

[0070] The pulsator 27 is divided into upper and lower parts in the axial direction, the upper and lower parts are connected to each other, the upper part 271 can move in the axial direction relative to the lower part 272 within a certain range, and the upper part 271 of the pulsator 27 can rotate relative to the lower part 272 within a certain angle range. The lower part 272 of the pulsator 27 is fixedly connected to the output shaft 23 of the deceleration clutch device. In the state after the pulsator 27 is installed, the upper part 271 of the pulsator 27 is limited to be lifted upward by a certain height or to fall back but not to fall off with the lower part 272 of the pulsator 27 as the bottom end, the lower part 272 of the pulsator 27 rotates with the output shaft 23 (i.e. the pulsator shaft) of the deceleration clutch device, the upper part 271 of the pulsator 27 also rotates with the lower part 272 of the pulsator 27, and simultaneously, since the upper part 271 of the pulsator 27 can rotate relative to the lower part 272 within a certain angle range, the upper part 271 of the pulsator 27 can rotate by a certain angle in the reverse direction under the action of external force.

[0071] When the pulsator 27 is integrated, the load such as clothes in the inner drum of the washing machine wound on the pulsator 27 can cause the pulsator 27 to be stuck. When the pulsator 27 is divided into the upper part 271 and the lower part 272 and the upper part 271 and the lower part 272 can rotate relative to each other, the clothes in the inner drum of the washing machine float upward in the water during washing, if the load such as clothes in the inner drum of the washing machine wound on the pulsator 27 causes the upper part 271 of the pulsator 27 to be stuck, the lower part 272 of the pulsator 27 can still rotate with the output shaft 23 of the deceleration clutch device, and the entire pulsator 27 will not be stuck, thereby protecting the deceleration clutch device.

[0072] In addition, the upper part 271 of the pulsator 27 is limited by the top end of the lower part 272 of the pulsator 27, and can be lifted upward by a certain height or fall back but not fall off, so when the pulsator 27 of the washing machine is subjected to a large upward pulling force of the load, the upper part 271 of the pulsator 27 can move upward, and since the upward movement of the load drives the upward movement of the upper part 271, the upward movement is not unlimited, but within the height range of the washing water level, so the upper part 271 of the pulsator 27 can be lifted upward relative to the lower part 272, which can reduce the pulling force of the entire pulsator 27 on the output shaft 23 to a certain extent, and improve the reliability and service life of the deceleration clutch device 28. Since the upper part 271 of the pulsator 27 can fall back, when the washing water level is low, the upper part 271 of the pulsator 27 can be at a low position to adapt to the low water level. In order to avoid the upward lifting of the upper part 271 of the pulsator 27, a damper is arranged at the connection between the upper part 271 and the lower part 272 of the pulsator 27, and the damper requires a certain friction force to be overcome when the upper part 271 of the pulsator 27 is lifted, thereby limiting the lifting of the upper part 271 of the pulsator 27.

[0073] The utility model discloses a kind of deceleration clutch device and washing machine, wherein deceleration clutch device includes upper end shell, output shaft, output shaft sleeve and limiting device, upper end shell is provided with stepped hole, output shaft sleeve is worn in stepped hole, output shaft sleeve is equipped with axial through-hole, output shaft is worn in the axial through-hole of output shaft sleeve, bearing is arranged between output shaft and output shaft sleeve along the axial direction, and limiting device that cooperates with each other is arranged on output shaft sleeve and output shaft to prevent output shaft from moving upward;It also includes water seal, and annular multi-lip water seal is respectively arranged between output shaft and output shaft sleeve, and between the stepped hole wall of output shaft sleeve and upper end shell. Deceleration clutch device and washing machine using the above structure can significantly improve the radial friction resistance of output shaft, and can significantly improve the axial anti-pulling-off and axial friction resistance, reduce noise, and the setting of multi-lip water seal can further enhance the sealing effect under the condition of large pulling force of output shaft, ensure to improve the service life of deceleration clutch device when adapting stirring type or V-shaped washing machine, and improve user experience.

[0074] The above is only the preferred embodiment of the utility model, and does not limit the utility model in any form, although the utility model has been disclosed as above with preferred embodiment, however, it is not used to limit the utility model, any skilled person in the art can make some changes or modifications to the above-mentioned technical content within the scope of the technical scheme of the utility model to obtain equivalent embodiments, and the implementation scheme in the above embodiment can be further combined or replaced, as long as it does not deviate from the technical scheme of the utility model, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the utility model still belongs to the scope of the utility model.

Claims

1. A deceleration clutch device, characterized in that: Includes an upper housing, output shaft, output shaft sleeve, and limiting device. The upper housing has a stepped hole, through which the output shaft sleeve passes. The output shaft sleeve has an axial through hole, and the output shaft passes through the axial through hole of the output shaft sleeve. A bearing is provided axially between the output shaft and the output shaft sleeve. The output shaft sleeve and the output shaft are equipped with mutually cooperating limiting devices to prevent the output shaft from moving upward; It also includes water seals, with annular multi-lip water seals provided between the output shaft and the output shaft sleeve, and between the output shaft sleeve and the stepped hole wall of the upper end shell.

2. The deceleration 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 includes an upper step provided on the wall of the axial through hole of the output shaft sleeve. The output shaft is a stepped shaft, and the limiting device also includes a lower step set on the output shaft, with the upper step pressing against the lower step.

3. A deceleration clutch device according to claim 2, characterized in that: It also includes snap rings, An annular groove is provided on the output shaft, located above the bearing, and a retaining ring is placed inside the annular groove.

4. A deceleration clutch device according to claim 3, characterized in that: The retaining ring is clearance-fitted with the upper end of the bearing.

5. A deceleration clutch device according to claim 4, characterized in that: The bearings consist of a group of bearings arranged continuously or at intervals along the axial direction of the output shaft.

6. A deceleration clutch device according to claim 5, characterized in that: The bearings include a set of needle roller bearings, a set of ball bearings, a combination of needle roller bearings and ball bearings, or a set of oil-impregnated bearings arranged axially along the output shaft.

7. A deceleration clutch device according to any one of claims 3-6, characterized in that: The water seal includes a first water seal, which is located between the output shaft and the output shaft sleeve and is positioned above the retaining ring. The inner side of the first water seal is provided with four lips spaced along the axial direction of the output shaft to contact the outer periphery of the output shaft. Among the four lips, the two upper lips extend from bottom to top and obliquely towards the output shaft, the third lower lip extends vertically towards the output shaft, and the lowest lip extends from top to bottom and obliquely towards the output shaft.

8. A deceleration clutch device according to claim 7, characterized in that: The water seal also includes a second water seal. The inner side of the second water seal between the output shaft sleeve and the stepped hole wall of the upper end shell has four lips from top to bottom, from the first lip to the fourth lip, which contact the outer periphery of the output shaft sleeve. The first lip and the third lip extend from bottom to top and obliquely toward the output shaft sleeve, while the second lip and the fourth lip extend vertically toward the output shaft.

9. A washing machine, characterized in that: The device is equipped with a deceleration clutch as described in any one of claims 1-8.

10. The washing machine according to claim 9, characterized in that: It also includes an impeller, which consists of an upper part and a lower part that are connected to each other but can move relative to each other. The lower part of the impeller is connected to the output shaft, and the upper part of the impeller can move back and forth axially relative to the lower part. The upper part of the impeller can rotate back and forth within a set angle range relative to the lower part.

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