Deceleration clutch device and washing machine

Abstract

The invention discloses a speed reduction clutch device and a washing machine. The speed reduction clutch device comprises an output shaft, an output shaft sleeve and a limiting device. 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 in a penetrating mode, a rolling bearing and an oil bearing are arranged between the output shaft and the output shaft sleeve in the axial direction, and the limiting device is arranged between the output shaft sleeve and the output shaft and prevents the output shaft from moving upwards. The rolling bearing and the oil-retaining bearing are arranged between the output shaft and the output shaft sleeve in the axial direction, the rolling bearing can play a role in supporting the output shaft to rotate, and the problem of water leakage caused by the fact that radial gaps among the output shaft, the output shaft sleeve and matched parts are enlarged due to excessive abrasion caused by friction is solved; the noise reduction effect can also be achieved when the output shaft rotates; the rolling bearing and the oil bearing are matched to reduce cost and improve the operation effect of the output shaft. The limiting device is arranged between the output shaft sleeve and the output shaft, so that the output shaft can be prevented from moving upwards and being pulled out.

Description

Technical Field

[0001] This invention belongs to the field of washing machine devices, specifically, it relates to a deceleration clutch device and a washing machine. Background Technology

[0002] Currently, conventional single-power or multi-power deceleration clutch devices for washing machines mainly consist of a braking system, a clutch system, a transmission system, and a sealing system.

[0003] During washing, the output shaft of the single-power or multi-power reduction clutch device is driven by the upper planetary carrier. The output shaft passes through the output shaft sleeve, which connects to the inner tub of the washing machine. The output shaft connects to the impeller or agitator. The output shaft is radially supported and axially limited by two shaft sleeves and a retaining spring. The shaft sleeve is a radial friction support structure, which is noisy during operation. When the impeller or agitator connected to the output shaft is positioned or shaped too high, the friction shaft sleeve is easily worn, and the radial clearance of the output shaft gradually increases. At this time, the impeller or agitator will pull the output shaft upward. Under continuous operation, the output shaft will be pulled out directly, or even the small water seal of the output shaft will fail and leak water. Due to the failure of the reduction clutch device, the entire washing machine washing operation fails.

[0004] Chinese patent application number 202222354322.9 discloses a clutch and braking structure for a fully automatic washing machine clutch. It adopts a technical solution of setting two sliding bearings between the impeller shaft (output shaft) and the spin-drying shaft (output shaft sleeve). However, the sliding bearings have large starting friction resistance and poor operating performance.

[0005] In view of this, the present invention is proposed. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a deceleration clutch device that can reduce noise, avoid wear on the output shaft, reduce the rotational resistance of the output shaft, and prevent the output shaft from being pulled out when moving upward.

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

[0008] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0009] A deceleration clutch device includes an output shaft, an output shaft sleeve, and a limiting device.

[0010] The output shaft sleeve has an axial through hole, and the output shaft passes through the axial through hole of the output shaft sleeve.

[0011] A rolling bearing and an oil-impregnated bearing are provided axially between the output shaft and the output shaft sleeve.

[0012] A limiting device is installed between the output shaft sleeve and the output shaft to prevent the output shaft from moving upward.

[0013] By axially installing both rolling bearings and oil-impregnated bearings between the output shaft and the output shaft sleeve, the rolling bearings serve two purposes: firstly, they provide support for the output shaft's rotation within the axial through-hole of the output shaft sleeve; secondly, they reduce noise during shaft rotation, resulting in lower noise compared to friction-type assembly structures. The rolling bearings also prevent excessive wear caused by friction, which could lead to increased radial clearance between the output shaft / sleeve and mating components, thus preventing leaks. The oil-impregnated bearings similarly provide support for the output shaft's rotation within the axial through-hole of the output shaft sleeve. This combination of rolling and oil-impregnated bearings reduces costs and improves output shaft performance. Finally, a limiting device between the output shaft and the output shaft sleeve prevents the output shaft from being pulled out upwards.

[0014] Furthermore, the rolling bearings and the oil-impregnated bearings are spaced apart, with the rolling bearings positioned above the oil-impregnated bearings.

[0015] To improve the stability of the output shaft rotation, rolling bearings and oil-impregnated bearings are spaced apart along the axial direction of the output shaft. This provides support for the output shaft within a certain span, making its rotation more stable. The rolling bearings are positioned above the oil-impregnated bearings for two reasons: firstly, it facilitates installation; secondly, it prevents wear on the upper part of the output shaft where it mates with the rolling bearings, thus preventing wobbling during output shaft rotation, and it also avoids water leakage.

[0016] Furthermore, the outer periphery of the oil-impregnated bearing is interference-fitted with the axial through hole of the output shaft sleeve, while the inner hole of the oil-impregnated bearing is clearance-fitted with the outer periphery of the output shaft.

[0017] In order to fix the oil-impregnated bearing in the axial through hole of the output shaft sleeve, the outer circumference of the oil-impregnated bearing is interference-fitted with the axial through hole of the output shaft sleeve. In order to provide support for the output shaft without causing wear, the inner hole of the oil-impregnated bearing is clearance-fitted with the outer circumference of the output shaft.

[0018] Furthermore, an annular groove is provided on the output shaft, the annular groove is located below the oil-impregnated bearing, and the limiting device includes a retaining ring, which is disposed in the annular groove and located below the oil-impregnated bearing.

[0019] Because the output shaft is pulled upwards during washing, a retaining circlip is used as a limiting device to restrict its upward movement. To accommodate the retaining circlip, an annular groove is created on the output shaft, located below the oil-impregnated bearing. The retaining circlip is positioned within the annular groove and below the oil-impregnated bearing. Thus, when the output shaft is pulled upwards, the lower wall of the annular groove on the output shaft is pressed against the retaining circlip, which in turn is pressed against the oil-impregnated bearing. The oil-impregnated bearing is interference-fitted into the axial through-hole of the output shaft sleeve, thereby preventing the output shaft from moving upwards.

[0020] Furthermore, the retaining ring is clearance-fitted with the lower end of the oil-impregnated bearing.

[0021] Since the retaining ring rotates with the output shaft, in order to reduce the friction between the retaining ring and the oil-impregnated bearing, and to avoid the output shaft having room to move upward due to an excessive gap between the retaining ring and the lower end of the oil-impregnated bearing, the retaining ring and the lower end of the oil-impregnated bearing are fitted with a clearance.

[0022] Furthermore, the limiting device also includes a positioning sleeve, the outer periphery of which is interference-fitted with the axial through hole of the output shaft sleeve. The output shaft is a stepped shaft, with the protruding step forming a disc. The disc is located above the rolling bearing, and the positioning sleeve is located above the disc.

[0023] To further reduce the possibility of the output shaft being pulled upwards, another limiting device, a positioning sleeve, is added. To achieve the positioning sleeve's limitation on the output shaft, a protruding disc is provided on the outer circumference of the output shaft. The disc is located above the rolling bearing, and the positioning sleeve is located above the disc, with its outer circumference interfering with the axial through hole of the output shaft sleeve. Thus, when the output shaft is pulled upwards, the positioning sleeve presses against the disc on the output shaft. Because the positioning sleeve is fixed in place by the interference fit with the axial through hole of the output shaft sleeve, the positioning sleeve can now move upwards along the output shaft.

[0024] Furthermore, to avoid wear caused by friction between the positioning sleeve and the outer circumference of the output shaft, the inner hole of the positioning sleeve is fitted with a clearance fit to the outer circumference of the output shaft.

[0025] Furthermore, to avoid wear caused by friction between the positioning sleeve and the disk, the lower end of the positioning sleeve is fitted with a clearance fit to the upper end of the disk.

[0026] Furthermore, the rolling bearings are one or a group. When the rolling bearings are a group, they are one or more combinations of radial bearings, thrust bearings, or radial-thrust bearings.

[0027] The rolling bearing can be a single rolling bearing or a group of rolling bearings arranged continuously along the output shaft axis. When the rolling bearing is a group of rolling bearings, it can increase the contact area between the bearing and the output shaft sleeve and the output shaft, improve the overall strength and enhance the torque of the axial stirring of the output shaft.

[0028] The present invention also proposes a washing machine that includes the deceleration clutch device described above.

[0029] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0030] This invention discloses a deceleration clutch device and a washing machine. The deceleration clutch device includes an output shaft, an output shaft sleeve, and a limiting device. The output shaft sleeve has an axial through hole, and the output shaft is fitted into the output shaft sleeve. A rolling bearing and an oil-impregnated bearing are axially arranged between the output shaft and the output shaft sleeve. The limiting device is located between the output shaft and the output shaft sleeve to prevent the output shaft from moving upward. By axially arranging the rolling bearing and the oil-impregnated bearing between the output shaft and the output shaft sleeve, the rolling bearing can both provide support, supporting the output shaft to rotate within the axial through hole of the output shaft sleeve, and also reduce noise during output shaft rotation, resulting in lower noise than a friction-type assembly structure. The rolling bearing prevents excessive wear caused by friction, which could lead to increased radial clearance between the output shaft, the output shaft sleeve, and mating components, thus preventing water leakage. The oil-impregnated bearing also provides support, supporting the output shaft to rotate within the axial through hole of the output shaft sleeve. The combination of rolling bearings and oil-impregnated bearings reduces costs and improves the operating efficiency of the output shaft. The limiting device between the output shaft sleeve and the output shaft prevents the output shaft from being pulled out upward.

[0031] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0032] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0033] Figure 1 This is an assembly diagram of the output shaft, output shaft sleeve, rolling bearing, oil-impregnated bearing, and limiting device of a deceleration clutch device according to the present invention.

[0034] Figure 2 This is an exploded three-dimensional structural diagram of the washing machine deceleration clutch device of the present invention;

[0035] Figure 3 This is a schematic diagram showing the connection between a high-positioned or high-shaped impeller and a speed reduction clutch.

[0036] In the diagram: 1. Input shaft; 1A. Input shaft gear; 2. Brake wheel shaft; 5. Output shaft gear; 5A. Output shaft gear tooth groove; 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 gear insert; 15. Internal gear ring; 16. Second fixed shaft gear; 17. Second gear shaft; 18. Second fixed shaft wheel frame; 19. Transmission disc; 19A. Transmission disc insertion gear; 19B. Transmission disc gear groove; 22. Output shaft sleeve; 23. Output shaft; 23A. Gear insert; 24. Upper end shell; 26. Center gear; 27. Impeller; 28. Reduction clutch device; 43. Rolling bearing; 44. Oil-impregnated bearing; 45. Annular groove; 46. Snap ring; 47. Positioning sleeve; 48. Disc.

[0037] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0039] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0040] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0041] like Figure 2 As shown, a washing machine deceleration clutch device includes 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 output shaft 23 passes through an axial through hole in the output shaft sleeve 22.

[0042] Input shaft 1 transmits power to the first fixed-axis gear train, the first fixed-axis gear train outputs power to output shaft 23, output shaft 23 simultaneously transmits power to the second fixed-axis gear train, the second fixed-axis gear train outputs power to output shaft sleeve 22.

[0043] The first fixed-axis gear train includes a fixedly mounted first fixed-axis gear carrier 13 and a first fixed-axis gear set rotatably mounted on the first fixed-axis gear carrier 13. The first fixed-axis gear set includes a first lower fixed-axis gear 11 and a first upper fixed-axis gear 12 mounted on the same first gear shaft 10. The first lower fixed-axis gear 11 is connected to the first upper fixed-axis gear 12, driving them to rotate synchronously. Both the first lower fixed-axis gear 11 and the first upper fixed-axis gear 12 are planetary gears.

[0044] The first lower fixed shaft gear 11 and the first upper fixed shaft gear 12, which are mounted on the same first gear shaft 10, constitute a double fixed shaft gear. By designing 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, the speed can be reduced to the set requirement.

[0045] The first fixed-axis gear train also includes an input shaft gear 1A and an output shaft gear 5. The input shaft gear 1A is fixedly mounted on the input shaft 1, and the input shaft gear 1A meshes with all the first lower fixed-axis gears 11 simultaneously for transmission.

[0046] The inner wall of the center hole of the output shaft gear 5 is provided with an output shaft gear tooth groove. The gear 23A of the output shaft 23 is inserted into the center gear tooth groove, thereby fixing the output shaft gear 5 on the output shaft 23. The output shaft gear 5 meshes and transmits power simultaneously with all the first upper fixed shaft gears 12.

[0047] Input shaft 1 transmits power to the first fixed-axis gear set of the first fixed-axis gear train. Input shaft 1, through input shaft gear 1A, engages with the first lower fixed-axis gear 11, transmitting power to the first lower fixed-axis gear 11. The first lower fixed-axis gear 11 drives the first upper fixed-axis gear 12 to rotate synchronously. The first upper fixed-axis gear 12, through output shaft gear 5, engages with the output shaft 23, driving the output shaft 23 to rotate. This achieves the goal of power being output from input shaft 1 to output shaft 23 after being reduced in speed by the first fixed-axis gear set.

[0048] The second fixed-axis gear train of the washing machine's reduction clutch device includes an internal gear ring 15, a fixedly mounted second fixed-axis gear carrier 18, and a second fixed-axis gear set rotatably mounted on the second fixed-axis gear carrier 18, as well as a transmission disc 19. The second fixed-axis gear set includes multiple second fixed-axis gears 16, forming a set of planetary gears, located inside the internal gear ring 15.

[0049] The output shaft 23 and the second fixed-axis gear set are engaged to transmit the output of the first fixed-axis gear train to the second fixed-axis gear train. The second fixed-axis gear set meshes with the internal gear ring 15 to drive the internal gear ring 15 to rotate.

[0050] To achieve transmission between the second fixed-axis gear set and the output shaft 23, the second fixed-axis gear train also includes a central gear 26 fixedly mounted on the output shaft. The central gear 26 engages with all the second fixed-axis gears 16 for external transmission. One end of the output shaft 23 is provided with a toothed gear 23A, and the inner wall of the central hole of the central gear 26 is provided with a central gear tooth groove. The toothed gear 23A of the output shaft 23 is inserted into the central gear tooth groove to achieve fixed installation between the output shaft 23 and the central gear 26.

[0051] The gear 23A of the output shaft 23 is sequentially inserted into the tooth groove of the central gear and the tooth groove of the output shaft gear to achieve 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 spaced apart to ensure the independence and stability of the transmission between the output shaft gear 5 and the first fixed-axis gear train, and the transmission between the central gear 26 and the second fixed-axis gear train.

[0052] The transmission disc 19 is connected to the internal gear ring 15 as a whole; the transmission disc 19 is provided with a transmission disc tooth groove 19B in the middle, and the output shaft sleeve 22 is provided with an output shaft sleeve tooth on the outer periphery of one end. The output shaft sleeve tooth is inserted into the transmission disc tooth groove 19B to connect the output shaft sleeve 22 and the transmission disc 19 as a whole.

[0053] The output shaft sleeve 22 and the internal gear ring 15 are fixedly connected to the transmission disk 19. The internal gear ring 15 drives the output shaft sleeve 22 to rotate synchronously through the transmission disk 19. The outer circle of the transmission disk 19 is provided with transmission disk insertion teeth 19A, and the internal gear ring 15 is provided with internal gear ring tooth grooves that match the transmission disk insertion teeth 19A. The transmission disk insertion teeth 19A are inserted into the internal gear ring tooth grooves to connect the transmission disk 19 and the internal gear ring 15 into one unit. The inner wall of the through hole in the middle of the transmission disk 19 is provided with a transmission disk tooth groove 19B, and one end of the outer circumference of the output shaft sleeve 22 is provided with an output shaft sleeve tooth. The output shaft sleeve tooth is inserted into the transmission disk tooth groove 19B to connect the output shaft sleeve 22 and the transmission disk 19 into one unit.

[0054] The output shaft 23 serves as both the power output for the washing machine impeller and the power input for the second fixed-axis gear train. Furthermore, the introduction of the internal gear ring 15 enables the reversal of power transmission, resulting in the output shaft sleeve 22 and the output shaft 23 having opposite rotation directions. That is, the washing tub of the washing machine connected to the output shaft sleeve 22 and the impeller of the washing machine connected to the output shaft 23 have opposite directions of rotation.

[0055] The washing machine deceleration clutch also includes a brake wheel 6 and a brake wheel shaft 2. The brake wheel 6 has an open internal cavity. The brake wheel shaft 2 is a combination of a disc and a columnar body located on one side of the disc. A through hole is provided along the axial direction of the columnar body, penetrating the disc and the columnar body. The brake wheel shaft 2 is fixed to the open end of the brake wheel 6 by a disc cover. The input shaft 1 passes through this through hole of the brake wheel shaft 2. The first fixed-axis gear train and the second fixed-axis gear train are respectively arranged in the internal cavity of the brake wheel 6. The first fixed-axis gear frame 13 of the first fixed-axis gear train is fixed on the disc of the brake wheel shaft 2.

[0056] The second fixed-axis wheel frame 18 includes a second wheel frame upper cover, a second wheel frame lower cover 14, and a second gear shaft 17 that is fixedly connected to the second wheel frame upper cover and the second wheel frame lower cover 14. The second fixed-axis gear 16 is rotatably mounted on the second gear shaft 17. The second wheel frame lower cover 14 is fixedly mounted on the first fixed-axis wheel frame 13.

[0057] Openings are respectively formed in the middle of the second wheel frame lower cover 14 and the middle of the first fixed-axis wheel frame 13. Internal teeth are formed on the inner peripheral wall of the opening of the first fixed-axis wheel frame 13 to form a toothed groove. A convex ring structure extends from the periphery of the opening of the second wheel frame lower cover 14 toward the first fixed-axis wheel frame 13. External teeth are formed on the outer peripheral wall of the convex ring structure to form a toothed tooth 14A of the second wheel frame lower cover. The toothed groove of the first fixed-axis wheel frame matches the tooth shape of the toothed tooth 14A of the second wheel frame lower cover. The toothed tooth 14A of the second wheel frame lower cover is inserted into the toothed groove of the first fixed-axis wheel frame to achieve a relatively fixed setting, thereby fixing the second fixed-axis wheel frame 18 of the second fixed-axis wheel system to the first fixed-axis wheel frame 13.

[0058] The washing machine deceleration clutch includes an upper shell 24, which is fitted onto the output shaft sleeve 22 through a central hole. A bearing is provided between the upper shell 24 and the output shaft sleeve 22. The upper shell 24 is used to fix the washing machine deceleration clutch onto the outer tub of the washing machine.

[0059] The first gear shaft 10 includes three, and each first gear shaft 10 is provided with a first lower fixed shaft gear 11 and a first upper fixed shaft gear 12.

[0060] In other embodiments, when the number of first gear shafts 10 is greater, the number of first lower fixed-axis gears 11 and first upper fixed-axis gears 12 are correspondingly the same. To ensure the strength of the gear train, reduce gear train noise, and lower the overall cost of the washing machine's reduction clutch device, some of the first lower fixed-axis gears 11 are made of plastic, and some are made of metal, with plastic and metal gears alternating; that is, adjacent first lower fixed-axis gears 11 are made of different materials. When the number of first lower fixed-axis gears 11 is odd, there is one more metal gear than plastic gear, with two metal gears adjacent to each other. The first upper fixed-axis gears 12 also adopt the same arrangement. That is, the same type of planetary gear in the first fixed-axis gear train uses an alternating distribution of metal and plastic gears.

[0061] There are four second gear shafts 17, so there are also four second fixed shaft gears 16. In order to ensure the strength of the gear train, reduce gear train noise, and reduce the overall cost of the washing machine's deceleration clutch device, two of the four second fixed shaft gears 16 are made of plastic gears and two are made of metal gears. The plastic gears and metal gears are distributed alternately, that is, adjacent second fixed shaft gears 16 are made of different materials.

[0062] In other embodiments, when the number of second fixed-axis gears 16 is greater, they are arranged in an alternating pattern of plastic gears and metal gears, meaning that adjacent second fixed-axis gears 16 are made of different materials. When the number of second fixed-axis gears 16 is odd, there is one more metal gear than plastic gear, with two metal gears adjacent to each other. That is, the planetary gears in the second fixed-axis gear train employ an alternating pattern of metal gears and plastic gears.

[0063] like Figure 1 As shown, the present invention provides a deceleration clutch device, including an output shaft 23, an output shaft sleeve 22, and a limiting device.

[0064] The output shaft sleeve 22 has an axial through hole, and the output shaft 23 is sleeved in the axial through hole of the output shaft sleeve 22.

[0065] A rolling bearing 43 and an oil-impregnated bearing 44 are provided axially between the output shaft 23 and the output shaft sleeve 22.

[0066] A limiting device is installed between the output shaft sleeve 22 and the output shaft 23 to prevent the output shaft 23 from moving upward.

[0067] By axially arranging a rolling bearing 43 and an oil-impregnated bearing 44 between the output shaft 23 and the output shaft sleeve 22, the rolling bearing 43 serves both a supporting function, enabling the output shaft 23 to rotate within the axial through-hole of the output shaft sleeve 22, and a noise reduction function during the rotation of the output shaft 23, resulting in lower noise compared to the friction-type assembly structure of the shaft sleeve. The rolling bearing 43 prevents excessive wear caused by friction, which could lead to increased radial clearance between the output shaft 23, the output shaft sleeve 22, and mating components, thus preventing water leakage. Similarly, the oil-impregnated bearing 44 also provides support, enabling the output shaft 23 to rotate within the axial through-hole of the output shaft sleeve 22. The combined arrangement of the rolling bearing 43 and the oil-impregnated bearing 44 reduces costs and improves the operating efficiency of the output shaft 23. A limiting device between the output shaft sleeve 22 and the output shaft 23 prevents the output shaft 23 from being pulled out upwards.

[0068] In order to improve the rotational stability of the output shaft 23, the rolling bearing 43 and the oil-impregnated bearing 44 are spaced apart along the axial direction of the output shaft 23. In this way, the rolling bearing 43 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.

[0069] The rolling bearing 43 is located above the oil-impregnated bearing 44. This is for two reasons: first, it facilitates installation; second, it prevents wear on the upper part of the output shaft 23 that mates with the rolling bearing 43, which could cause the output shaft 23 to wobble when rotating, and it also prevents water leakage.

[0070] 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 interference-fitted with the axial through hole of the output shaft sleeve 22. In order to provide support for the output shaft 23 without causing wear, the inner hole of the oil-impregnated bearing 44 is clearance-fitted with the outer periphery of the output shaft 23.

[0071] Since the output shaft 23 is pulled upward during washing, a retaining ring 46 is provided as a limiting device to restrict its upward movement. To install the retaining ring 46, an annular groove 45 is provided on the output shaft 23, located below the oil-impregnated bearing 44. The retaining ring 46 is positioned within the annular groove 45 and below the oil-impregnated bearing 44. Thus, 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 retaining ring 46, which in turn is pressed by the oil-impregnated bearing 44. The oil-impregnated bearing 44 is interference-fitted into the axial through hole of the output shaft sleeve 22, thereby preventing the output shaft 23 from moving upward.

[0072] Since the snap ring 46 rotates with the output shaft 23, in order to reduce the friction between the snap ring 46 and the oil-impregnated bearing 44, and to avoid the output shaft 23 having room to move upward due to an excessive gap between the snap ring 46 and the lower end of the oil-impregnated bearing 44, the snap ring 46 and the lower end of the oil-impregnated bearing 44 are fitted with a clearance.

[0073] In this application, the installation state of the deceleration clutch device on the washing machine is used to define the vertical position. To further reduce the possibility of the output shaft 23 being pulled upward, another limiting device, a positioning sleeve 47, is added. To achieve the limiting of the output shaft 23 by the positioning sleeve 47, the output shaft is a stepped shaft, with the protruding step forming a disc 48. The disc 48 is located above the rolling bearing 43, and the positioning sleeve 47 is located above the disc 48. The outer periphery of the positioning sleeve 47 is interference-fitted with the axial through hole of the output shaft sleeve 22. Thus, when the output shaft 23 is pulled upward, the positioning sleeve 47 presses against the disc 48 on the output shaft 23. Since the positioning sleeve 47 is fixed in place by the interference fit with the axial through hole of the output shaft sleeve 22, the positioning sleeve 47 can allow the output shaft 23 to move upward.

[0074] To prevent wear caused by friction between the positioning sleeve 47 and the outer circumference of the output shaft 23, the inner hole of the positioning sleeve 47 is clearance-fitted with the outer circumference of the output shaft 23. To prevent wear caused by friction between the positioning sleeve 47 and the disk 48, the lower end of the positioning sleeve 47 is clearance-fitted with the upper end of the disk 48.

[0075] The rolling bearing 43 is a single bearing or a group of rolling bearings 43 arranged continuously along the axial direction of the output shaft 23. When the rolling bearing 43 is a group of rolling bearings 43, it can increase the contact surface between the bearing and the output shaft sleeve 22 and the output shaft 23, improve the overall strength and enhance the torque of the axial stirring of the output shaft 23.

[0076] When the rolling bearings 43 are in a group, they are one or more combinations of radial bearings, thrust bearings, or radial-thrust bearings.

[0077] In other embodiments, only the snap ring 46 and the annular groove 45 on the matching output shaft 23 can be provided to limit the output shaft 23 and prevent the output shaft 23 from being pulled upward by the impeller.

[0078] In other embodiments, only the positioning sleeve 47 and the matching outer peripheral disk of the output shaft 23 can be provided to limit the output shaft 23 and prevent the output shaft 23 from being pulled upward by the impeller.

[0079] In order to enhance the strength of the output shaft, the axial thickness of the disk 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.

[0080] In other embodiments, when the output shaft 23 is pulled upward by the impeller during washing, it is still rotating. Friction occurs between the disc 48 on the output shaft 23 and the positioning sleeve 47. To prevent wear caused by this friction, a thrust ball bearing is fitted onto the output shaft 23, located between the disc 48 and the positioning sleeve 47. This thrust ball bearing can withstand axial loads and prevent wear between the disc 48 and the positioning sleeve 47. To further reduce friction and improve the rotational efficiency of the output shaft, the upper end face of the thrust ball bearing is clearance-fitted with the lower end face of the positioning sleeve 47.

[0081] In other embodiments, the output shaft sleeve 22 can also be configured as a stepped hole, using the step protruding towards the central axis from the axial through hole of the output shaft sleeve 22 to replace the positioning sleeve 47, which cooperates with the disk 48 on the output shaft 23 to restrict the output shaft 23 from being pulled upward by the impeller. To avoid frictional wear between the step and the disk 48, a thrust ball bearing can also be provided between the lower end face of the step and the disk.

[0082] The present invention also proposes a washing machine that includes the deceleration clutch device described above.

[0083] By employing the aforementioned deceleration clutch device, the washing machine, when equipped with a high-capacity pulsator, such as... Figure 3 As shown, during washing, the upward pull of the impeller is relatively large, thus pulling the connected output shaft 23 upward. Because a positioning sleeve 47 is provided between the output shaft 23 and the output shaft sleeve 22, and a protruding disc is provided on the outer circumference of the output shaft 23, the positioning sleeve 47 presses against the disc to limit the output shaft 23, preventing it from being pulled upward by the impeller. Simultaneously, there is a second limiting measure: an annular groove 45 is provided on the output shaft 23, and a retaining ring 46 is placed within the annular groove 45. An oil-impregnated bearing 44, which is interference-fitted and installed in the axial through hole of the output shaft sleeve 22, presses against the retaining ring 46, thereby pressing against the output shaft 23 to limit it and prevent it from being pulled upward by the impeller. These double limiting measures ensure that the output shaft is not pulled upward by the impeller.

[0084] In other embodiments, only one of the above limiting measures may be used.

[0085] The deceleration clutch device and washing machine with the above structure can significantly improve the radial friction resistance of the output shaft, as well as the axial anti-pull-out and axial friction resistance, reduce noise, ensure and improve the life of the deceleration clutch when it is adapted to agitator or V-type washing machines, improve the user experience, and reduce assembly costs.

[0086] This invention discloses a deceleration clutch device and a washing machine. The deceleration clutch device includes an output shaft, an output shaft sleeve, and a limiting device. The output shaft sleeve has an axial through hole, and the output shaft is fitted into the output shaft sleeve. A rolling bearing and an oil-impregnated bearing are axially arranged between the output shaft and the output shaft sleeve. The limiting device is located between the output shaft and the output shaft sleeve to prevent the output shaft from moving upward. By axially arranging the rolling bearing and the oil-impregnated bearing between the output shaft and the output shaft sleeve, the rolling bearing can both provide support, supporting the output shaft to rotate within the axial through hole of the output shaft sleeve, and also reduce noise during output shaft rotation, resulting in lower noise than a friction-type assembly structure. The rolling bearing prevents excessive wear caused by friction, which could lead to increased radial clearance between the output shaft, the output shaft sleeve, and mating components, thus preventing water leakage. The oil-impregnated bearing also provides support, supporting the output shaft to rotate within the axial through hole of the output shaft sleeve. The combination of rolling bearings and oil-impregnated bearings reduces costs and improves the operating efficiency of the output shaft. The limiting device between the output shaft sleeve and the output shaft prevents the output shaft from being pulled out upward.

[0087] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A deceleration clutching device characterized by: The output shaft, the output shaft sleeve and the limiting device, 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 rolling bearing and the oil-containing bearing are arranged along the axial direction between the output shaft and the output shaft sleeve, The limiting device is arranged between the output shaft sleeve and the output shaft to prevent the upward movement of the output shaft.

2. A reduction clutch device according to claim 1, characterized in that: The rolling bearing and the oil-containing bearing are arranged in a spaced manner, and the rolling bearing is located above the oil-containing bearing.

3. A reduction clutch device according to claim 2, wherein: 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.

4. A reduction clutch device according to claim 2, wherein: An annular groove is arranged on the output shaft, the annular groove is located below the oil-containing bearing, and the limiting device comprises a snap spring, the snap spring is arranged in the annular groove and located below the oil-containing bearing.

5. A reduction clutch device according to claim 4, wherein: The snap spring and the lower end of the oil-containing bearing are in clearance fit.

6. A reduction clutch device according to any one of claims 1 to 5, characterized in that: 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 rolling bearing, and the positioning sleeve is located above the disc.

7. A reduction clutch device according to claim 6, wherein: The outer periphery of the positioning sleeve is in interference fit with the axial through hole of the output shaft sleeve, and the inner hole of the positioning sleeve is in clearance fit with the outer periphery of the output shaft.

8. A reduction clutch device according to claim 7, wherein: The lower end of the positioning sleeve and the upper end of the disc are in clearance fit.

9. A reduction clutch device according to claim 8, wherein: The rolling bearing is one or a group, when the rolling bearing is a group, it is one or a combination of radial bearing, thrust bearing or radial and thrust bearing.

10. A laundry machine characterized by: The speed reduction clutch device comprises the speed reduction clutch device according to any one of claims 1-9.

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