A washing machine and a deceleration clutch device thereof

Abstract

The application discloses a washing machine and a speed reduction clutch device thereof, the speed reduction clutch device comprising a speed reducer and a clutch, the clutch comprising a fixed disc installed on the speed reducer, the fixed disc being provided with a metal inlay piece, the metal inlay piece having meshing teeth, and at least a non-metal layer being arranged on the surface of the meshing teeth of the metal inlay piece. The fixed disc comprises a meshing part and a mounting part, the meshing part being used for meshing with a clutch shaft sleeve of the clutch, the mounting part being connected with the meshing part and used for fixing the meshing part, and the meshing part comprising the metal inlay piece and the non-metal layer arranged outside the metal inlay piece. The speed reduction clutch device of the washing machine significantly reduces the abrasion degree generated when metals mesh with each other on the basis of ensuring that the overall torsional strength is not reduced, effectively reduces noise, prolongs the service life of the device and improves the operation stability.

Description

Technical Field

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

[0002] During operation, a top-loading washing machine mainly relies on a reducer to change the motor speed and uses a clutch to switch between washing and spin-drying modes, thereby driving the pulsator to rotate to wash clothes and driving the inner tub to rotate synchronously with the pulsator to achieve spin-drying.

[0003] Chinese patent application number CN201410772488.X discloses a technical solution for a direct-drive motor and a reduction clutch for a washing machine. The motor consists of a rotor and a stator built into the rotor. The stator has an internal cavity. The rotor is rigidly connected to the input shaft, and a torque transmission sleeve is mounted on the rotor or input shaft. A fixed disc is installed on the stator. Simultaneously, a clutch sleeve for the washing machine's reduction clutch is disposed within the stator cavity. When the clutch sleeve slides downwards and engages with the torque transmission sleeve, the spin-drying program is initiated; when it slides upwards and engages with the fixed disc, the washing program is entered.

[0004] Through long-term practical application and observation, the applicant found that while the aforementioned patented device has the advantages of compact structure and small space occupation, and can stably achieve operating condition switching and meet basic washing needs under the application conditions of ordinary washing machines, the device reveals obvious limitations for special washing machine models that have higher requirements for power performance. Especially when a large water flow needs to be generated to handle the washing of heavy or large items, the strong power input from the motor causes a significant increase in the torque applied to the fixed plate by the clutch bushing, thus placing more stringent requirements on the strength of the fixed plate.

[0005] If a metal material is chosen to manufacture the fixed disc, the clutch bushing needs to move precisely to a specific position during operation to ensure tight engagement with the teeth of the fixed disc, thereby achieving stable fixation in the direction of rotation. This places extremely high demands on the machining accuracy and shape design of the meshing teeth of the fixed disc. In this case, the yield rate of the metal processing will be significantly affected, and production costs will increase accordingly. In addition, the rigid contact between the metal clutch bushing and the fixed disc during engagement will generate considerable noise, which will undoubtedly reduce the user experience.

[0006] Conversely, if injection-molded parts are used as the material for the fixed disc, although the injection molding process has the advantages of low cost and high production efficiency, in the actual operation of the washing machine, the washing program involves frequent forward and reverse switching of the motor, especially at the moment of motor start-up, which will generate a large inrush current. This will cause the meshing teeth of the fixed disc that mesh with the clutch bushing to be easily damaged under the long-term impact force, thus affecting the overall performance and service life of the washing machine.

[0007] For example, Chinese patent application number CN201910620011.2 discloses a design for a pulsator washing machine, which includes an inner drum, a pulsator, a drive shaft, and a drive device. In this design, the bottom of the inner drum has a shaft hole through which the drive shaft passes. The drive device is located outside the inner drum and is connected to the bottom end of the drive shaft. The pulsator is installed inside the inner drum and connected to the top end of the drive shaft, dividing the inner drum into an upper washing chamber and a lower washing chamber.

[0008] Actual testing and application of the product revealed that, due to the significant distance between the pulsator (responsible for agitating water and clothes) and the bottom of the drum, a large rotational force is required from the pulsator to achieve the desired washing effect. However, actual verification results show that when using the existing reduction clutch device, not only does the pulsator shaft exhibit instability by moving up and down during operation, but the meshing teeth of the fixed disc also suffer severe wear, and in extreme cases, even breakage. This directly affects the normal operation and lifespan of the washing machine, necessitating urgent technical improvements and optimizations.

[0009] In view of this, the present invention is proposed. Summary of the Invention

[0010] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art. The primary objective is to solve the problem that the existing deceleration clutch device cannot be stably applied to washing machines with high power performance requirements. The present invention provides a washing machine deceleration clutch device. This device improves the fixed plate by implementing measures to improve the fixed plate, thereby effectively increasing the strength of the fixed plate while ensuring that the production yield requirements and noise reduction effect are met, so that it can be applied to washing machines with high power performance requirements.

[0011] The second objective of this invention is to provide a washing machine deceleration clutch device that can effectively reduce the assembly difficulty of the reducer gear train while ensuring that the reducer gear train has sufficient strength, thereby ensuring that the gear train remains stable during operation.

[0012] The third objective of this invention is to provide a washing machine deceleration clutch device that can prevent output shaft wear, reduce output shaft rotational resistance, and prevent axial movement of the output shaft.

[0013] The fourth objective of this invention is to provide a washing machine having the aforementioned deceleration clutch device, wherein the water agitation device of the washing machine can stably tumble the clothes and prevent them from tangling.

[0014] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is: a washing machine deceleration clutch device, including a reducer and a clutch, wherein the clutch includes,

[0015] A fixed disc, mounted on the reducer;

[0016] The fixed disk is provided with a metal insert, the metal insert having meshing teeth, and at least a non-metallic layer is provided on the surface of the meshing teeth of the metal insert.

[0017] The design of the fixed disc in this invention has two aspects. On the one hand, the metal inserts ensure that the fixed disc has sufficient strength and stability to withstand various forces during the operation of the clutch and ensure the reliable operation of the deceleration clutch device. On the other hand, the non-metallic layer on the surface of the meshing teeth plays an important role, which effectively reduces the friction and wear generated during metal meshing and reduces operating noise.

[0018] A further embodiment is that the fixed disk includes,

[0019] The engaging part is used to engage with the clutch shaft sleeve of the clutch;

[0020] The mounting part is connected to the engaging part and is used to fix the engaging part;

[0021] The engaging portion includes the metal insert and a non-metallic layer disposed outside the metal insert;

[0022] Preferably, the non-metallic layer is a plastic layer, a rubber layer, or a non-metallic composite material layer;

[0023] Preferably, the mounting part has a ring-shaped structure, with a protruding sleeve coaxially provided near the inner ring, and the engaging part is located inside the sleeve.

[0024] The meshing part adopts an internal metal insert and an external non-metal design. The metal insert provides sufficient strength to ensure that it is not easily deformed or damaged during meshing. The outer non-metal layer plays a role in buffering and reducing wear, and can also reduce the noise generated by metal collision to a certain extent. Preferably, the non-metal layer is a plastic layer, a rubber layer, or a non-metallic composite material layer with a certain strength that can absorb noise.

[0025] The ring-shaped design of the mounting part features a protruding sleeve coaxially positioned near the inner ring. The engaging part is located within this sleeve. This compact sleeve design not only effectively secures the engaging part, preventing displacement or shaking during operation, but also makes more rational use of space, resulting in a more compact structure for the entire mounting plate. This facilitates installation and layout within the limited space inside the washing machine.

[0026] A further embodiment is that the mounting part is an injection-molded part integrally injection-molded on the outer periphery of the metal insert;

[0027] Preferably, the mounting portion is injection molded with a hinge seat;

[0028] Preferably, the plastic layers of the mounting portion and the engaging portion are integrally injection molded parts.

[0029] Alternatively, an alternative to the above solution is that the mounting part has a metal component inside and a plastic layer is injection molded on the outside.

[0030] Preferably, the metal insert and the metal parts in the mounting section are separate structures, but are connected as one piece by injection molding;

[0031] Alternatively, the metal insert and the metal parts within the mounting section may be an integral structure.

[0032] Another alternative is that the fixing plate includes a non-metallic body with a mounting groove that matches the metal insert, and the metal insert is installed in the mounting groove.

[0033] Preferably, the non-metallic body is made of plastic, rubber, or a non-metallic composite material;

[0034] Preferably, the non-metallic body is an injection molded part or an extruded part.

[0035] The various design schemes of the aforementioned mounting plate optimize the performance, manufacturing process, assembly convenience, and cost control of the mounting plate from different perspectives.

[0036] A further embodiment is that the meshing teeth of the metal insert are end-face teeth, which extend to the side opposite to the reducer.

[0037] Preferably, the metal insert includes a support ring and a plurality of meshing teeth disposed on the support ring, the plurality of meshing teeth protruding from the side end face of the support ring opposite to the reducer and evenly distributed at intervals along the circumferential direction of the support ring;

[0038] The structural design of the aforementioned metal inserts ensures that the force is more even when engaging with the clutch bushing, effectively improving the stability and reliability of the engagement, reducing the probability of component wear and failure caused by uneven force, and thus ensuring the smooth operation of the deceleration clutch device and the normal working condition of the washing machine.

[0039] Preferably, the support ring and the meshing teeth are machined as a single metal part.

[0040] The support ring and meshing teeth are manufactured using a one-piece metal component process, which not only simplifies the production process and reduces the number of parts assembly steps, thus reducing the quality risks caused by assembly errors, but also enhances the overall strength and rigidity of the metal inserts through the one-piece molding structure. This allows them to maintain good structural integrity even when subjected to large torques and frequent meshing impacts, ensuring their durability and stability during long-term use of the washing machine and reducing the frequency of repairs and replacements.

[0041] Furthermore, the support ring is provided with a positioning part for positioning with the injection mold;

[0042] Preferably, the positioning part is an integrally formed notch on the inner peripheral wall of the support ring;

[0043] Preferably, there are at least two notches, and they are preferably evenly distributed around the support ring.

[0044] The aforementioned positioning design allows for precise positioning of the metal insert within the injection mold during the injection molding process. Using a notch on the inner circumferential wall of the support ring as the positioning part ensures that the strength of the fixed disc is not reduced, nor does it affect the meshing connection between the fixed disc and the clutch bushing. The evenly distributed multiple notches precisely define the position of the support ring within the injection mold from multiple angles, effectively preventing positional deviations such as offset or rotation of the metal insert during injection molding. This ensures that the plastic layer can uniformly and accurately wrap around the metal insert, forming an ideal composite structure.

[0045] A further embodiment is that the reducer includes a brake wheel and at least one gear train installed in the brake wheel, the same gear train including a planetary gear set composed of metal gears and plastic gears;

[0046] Preferably, the planetary gears in the planetary gear set are at least partially composed of alternating metal and plastic gears;

[0047] Preferably, a first gear train and a second gear train are installed inside the brake wheel. The input shaft of the deceleration clutch drives the first gear train, the first gear train transmits power to the output shaft of the deceleration clutch and the second gear train, and the second gear train transmits power to the output shaft sleeve of the deceleration clutch.

[0048] The first gear train includes a set of planetary gears, the second gear train includes a set of planetary gears, and at least one set of planetary gears uses alternating metal gears and plastic gears;

[0049] Preferably, metal gears and plastic gears are alternately distributed in each set of planetary gears.

[0050] The planetary gears in the aforementioned planetary gear set employ an alternating distribution of metal and plastic gears. This alternating structure fully leverages the high strength and wear resistance of metal gears, as well as the low weight, self-lubricating properties, and vibration and noise reduction characteristics of plastic gears, achieving an optimized balance between gear system strength and assembly efficiency. During power transmission, the metal gears bear the larger loads and torques, ensuring the strength and reliability of the entire gear system. Meanwhile, the plastic gears reduce overall weight, lower frictional resistance and noise during gear system operation, effectively reduce energy loss, improve transmission efficiency, and, to a certain extent, buffer vibrations, enhancing the smoothness and durability of the gear system. This allows the reducer to adapt to power transmission requirements under different operating conditions, improving the washing machine's performance under various working states.

[0051] A further solution is to install a limiting device between the output shaft sleeve and the output shaft of the deceleration clutch to prevent axial movement of the output shaft;

[0052] Preferably, the limiting device includes a first limiting member on the output shaft, a rolling bearing between the output shaft sleeve and the output shaft, and a second limiting member on the output shaft sleeve; the first limiting member and the second limiting member abut against the two ends of the rolling bearing in a one-to-one correspondence.

[0053] Preferably, the first limiting member, the rolling bearing, and the second limiting member are arranged sequentially along the output shaft axis in a direction away from the reducer;

[0054] Preferably, another rolling bearing is provided between the output shaft sleeve and the output shaft, with a first limiting member or a second limiting member spaced apart from the rolling bearing of the limiting device.

[0055] The above design allows the output shaft to be subjected to axial force, which is transmitted to the rolling bearing through the first limiting component and then dispersed to the second limiting component. This effectively limits the axial displacement of the output shaft, avoids damage such as collision and wear to other components inside the reducer caused by axial movement, ensures the stability and accuracy of power transmission, and extends the service life of the entire reduction clutch device.

[0056] The design of dual rolling bearings can reduce radial wobble of the output shaft during rotation to a greater extent, distribute the axial force, further optimize the working state of the output shaft, and reduce noise and vibration caused by shaft instability.

[0057] The washing machine of the present invention having the above-mentioned deceleration clutch device includes an inner tub and a water agitator installed in the inner tub, wherein the water agitator is connected to the output shaft of the deceleration clutch device.

[0058] Preferably, the water stirring device includes,

[0059] The support column is sleeved on the output shaft and extends from the bottom of the inner barrel toward the opening of the inner barrel.

[0060] The agitator is mounted on a support column and is a certain distance from the bottom of the inner tub, forming a washing space for clothes to tumble and wash. Below the agitator is a guide component that extends upward from the center to the outer periphery to guide the clothes to tumble outward.

[0061] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0062] In the washing machine deceleration clutch device of the present invention, the non-metallic layer on the surface of the meshing teeth of the metal insert of the fixed disc plays a key role. While ensuring that the overall torsional strength is not reduced, it significantly reduces the wear generated during metal-to-metal meshing and effectively reduces noise, thereby extending the service life of the device and improving operational stability and safety.

[0063] The various structural designs of the fixing disc in this invention, such as the annular mounting part equipped with a sleeve, the integrated injection molded part, and the combination of separate or integrated metal parts with injection molding, can significantly improve the convenience and flexibility of the production process while maintaining strength standards. This not only reduces manufacturing costs and process difficulty, but also creates favorable conditions for large-scale production and widespread application, helping to enhance the product's market competitiveness and popularity.

[0064] The reducer of this invention utilizes a planetary gear set composed of metal and plastic gears, with an alternating distribution being the preferred option. This design cleverly leverages the characteristics of both metal and plastic gears, achieving an optimized balance between gear train strength and assembly efficiency. On one hand, it ensures high power transmission efficiency; on the other hand, it reduces overall weight, thereby reducing energy loss, accelerating the device's response speed, and enhancing operational stability. This significantly improves the reliability and durability of power transmission, ensuring that the washing machine maintains efficient and stable operation under various working conditions, meeting diverse usage needs.

[0065] The limiting device set between the output shaft sleeve and the output shaft in the reducer of this invention can effectively suppress the axial movement of the output shaft, greatly reduce the wear problem of components caused by the output shaft movement, and avoid unstable power transmission. This provides further protection for the stable and safe operation of the washing machine, reduces the risk of equipment failure, and improves the reliability and service life of the equipment.

[0066] The washing machine of this invention, employing the aforementioned deceleration clutch device, features a support column that works in conjunction with the agitator to create a suitable washing space between the agitator and the inner tub. This allows clothes to fully contact the water flow during washing, effectively improving the washing effect. Furthermore, the guide component located below the agitator efficiently guides the clothes to tumble outwards, successfully preventing tangling during washing. This not only reduces wear and tear on clothes but also improves washing uniformity and avoids secondary contamination caused by dirt accumulating under the existing pulsator, providing users with a superior, convenient, efficient, and clean laundry experience, thus increasing user satisfaction and recognition.

[0067] The washing machine of the present invention, by adopting the above-mentioned carefully designed deceleration clutch device, can meet the requirements for stable operation of the uniquely designed water agitation device from the hardware level, providing it with sufficient and stable water flow intensity, and ensuring that the washing machine maintains good operating status and performance while washing efficiently.

[0068] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0069] 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:

[0070] Figure 1 This is a schematic diagram of the deceleration clutch device of the present invention;

[0071] Figure 2 This is a schematic diagram of the clutch structure of the deceleration clutch device of the present invention;

[0072] Figure 3 This is a schematic diagram of the fixed disc structure of the deceleration clutch device of the present invention;

[0073] Figure 4 This is a schematic diagram of the metal inlay structure of the fixing disk of the present invention;

[0074] Figure 5 This is a schematic diagram of the mounting structure of the fixed disk of the present invention;

[0075] Figure 6 This is a schematic diagram of an assembly structure of the fixed disk of the present invention;

[0076] Figure 7 This is a half-sectional view of the output shaft sleeve and output shaft assembly of the deceleration clutch device of the present invention;

[0077] Figure 8 This is a half-sectional view of another assembly of the output shaft sleeve and output shaft of the deceleration clutch device of the present invention;

[0078] Figure 9 This is a half-sectional view of the output shaft sleeve and output shaft of the deceleration clutch device of the present invention in another assembly.

[0079] In the diagram: 1. Reducer; 10. Housing; 11. Input shaft; 111. Input shaft gear; 12. Input shaft sleeve; 13. Brake wheel; 131. Brake wheel cover; 14. Output shaft; 141. First limiting member; 142. Snap ring; 143. Third limiting member; 144. Annular groove; 145. Annular disc; 15. Output shaft sleeve; 151. Second limiting member; 152. Support step; 153. Fourth limiting member; 154. Positioning sleeve; 16. First gear train; 161. Planetary gear; 162. Planetary gear carrier; 17. Second gear train; 171. Planetary gear; 172. Central gear; 18. First internal gear; 19. Second internal gear; 2. Clutch; 20. Clutch spring; 3. Fixed disc; 30. Body; 31. Metal insert; 311. Support ring; 312. Notch; 32. Meshing teeth; 33. Meshing part; 34. Mounting part; 341. Sleeve; 342. Hinge seat; 343. Shift fork component; 35. Mounting groove; 4. Dehydration disc; 5. Clutch bushing; 6. First rolling bearing; 7. Second rolling bearing; 8. Third rolling bearing; 9. Oil-impregnated bearing.

[0080] 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

[0081] 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.

[0082] 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.

[0083] 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.

[0084] like Figure 1 and Figure 2 As shown in the embodiment of the present invention, the washing machine deceleration clutch device mainly comprises a reducer 1 and a clutch 2. The clutch 2 mainly includes a fixed disc 3, a spin-drying disc 4, and a clutch bushing 5. The reducer 1 includes an input shaft 11, an input bushing 12, a brake wheel 13, an output shaft 14, an output bushing 15, and a gear set installed inside the brake wheel 13. The brake wheel 13 is covered by a housing 10, which is fixedly installed on a mounting plate at the bottom of the washing machine's outer tub.

[0085] Fixed plate 3 is fixedly installed on reducer 1;

[0086] The dehydration disc 4 rotates together with the input shaft 11 of the reducer. It can be installed on the input shaft 11 or on the motor rotor.

[0087] The clutch bushing 5 is slidably mounted on the input bushing 12 of the reducer and rotates together with the input bushing 12. It can engage with the fixed disc 3 or the spin-dry disc 4 to switch between the washing and spin-drying modes of the washing machine.

[0088] like Figures 3 to 6 As shown, in the structural composition of the fixed disk 3, the present invention includes a metal insert 31, which has engagement teeth 32 capable of engaging with the clutch bushing 5 (see reference). Figure 4 ), and at least the surface of its meshing teeth 32 is covered with a non-metallic layer, which can be rubber, plastic and other non-metallic composite materials with certain hardness and wear resistance.

[0089] The non-metallic layer is preferably a plastic or rubber layer, which reduces noise that may be generated during metal meshing and reduces wear, thereby improving the stability and durability of the engagement between the fixed disc and the clutch bushing, and ensuring the efficient operation and service life of the entire deceleration clutch device.

[0090] Specifically, such as Figure 3 As shown, the fixed disc 3 includes an engagement part 33 and a mounting part 34. The engagement part 33 is the key part for realizing the clutch function, and the mounting part 34 is used to fix the engagement part 33, fixing the engagement part on the housing 10 of the reducer to ensure the stability of the entire device.

[0091] The engaging portion 33 is composed of a metal insert 31 and a non-metallic layer disposed on its exterior. This composite structure effectively reduces wear and noise caused by direct contact between metal components while ensuring strength. Generally, the non-metallic layer is a plastic layer, a rubber layer, or a non-metallic composite material layer.

[0092] like Figure 5 As shown, the mounting part 34 has a ring-shaped structure, and a protruding sleeve 341 is provided coaxially near the inner ring. The engaging part 33 is located inside the sleeve 341. This compact design not only saves space but also improves the overall stability of the device.

[0093] A further option is that the mounting part 34 is an injection molded part integrally injection molded on the outer periphery of the metal insert 31, and a hinge seat 342 can also be injection molded on the mounting part 34 for mounting the shift fork component 343. The mounting shift fork component 343 can move the clutch bushing 5 upward to engage with the fixed plate 3, further enhancing the functionality and flexibility of the device.

[0094] Preferably, the plastic layers of the mounting part 34 and the engaging part 33 can be made into an integral injection molded part, which optimizes the production process and improves production efficiency and product quality.

[0095] Another design option is to install a metal part (not shown in the figure) inside the mounting section 34 and then inject a plastic layer onto its outer layer. The metal insert and the metal part inside the mounting section can be either separate structures connected by injection molding or a single structure. This provides a variety of options for the production and manufacturing of the device to meet different production needs and cost control requirements.

[0096] In addition, such as Figure 6As shown, the fixing plate 3 also has another feasible design structure, namely, the fixing plate body 30 is made of non-metallic material, and a mounting groove 35 is provided in the body 30 to precisely fit the metal insert 31, thereby firmly placing the metal insert 31 therein. Preferably, the non-metallic body is plastic, rubber, or a non-metallic composite material. More preferably, the non-metallic body is an injection molded or extruded plastic or rubber part.

[0097] Generally speaking, the non-metallic composite material mentioned above in this invention is a polymer impact-resistant composite material or a lightweight, high-strength composite material such as nylon or acetal.

[0098] This innovative design approach significantly facilitates the mass production of the non-metallic mounting plate body, with the metal inserts then installed in subsequent production processes. Compared to the traditional method of manufacturing the metal inserts first and then forming the whole, this method effectively simplifies the production process, avoids the impact of potential problems in the metal insert manufacturing stage on the overall production schedule, greatly improves production efficiency, reduces production costs, provides strong technical support for the large-scale industrial production of the product, and enhances the product's competitiveness in the market.

[0099] Furthermore, such as Figure 4 As shown, the meshing teeth of the metal insert 31 are end-face teeth, extending towards the side opposite to the reducer. This design structure makes the meshing process smoother and more efficient. Specifically, the metal insert 31 includes a support ring 311 and multiple meshing teeth 32 disposed on the support ring. The multiple meshing teeth 32 protrude from the end face of the support ring opposite to the reducer and are evenly distributed along the circumference of the support ring. Preferably, the support ring 311 and the meshing teeth 32 are integrally machined metal parts, ensuring the precision and strength of the meshing teeth.

[0100] The support ring 311 is also provided with a positioning part for precise positioning with the injection mold. The positioning part is a notch 312 integrally formed on the inner peripheral wall of the support ring. There are at least two notches 312, and they are preferably evenly distributed around the support ring. This positioning design ensures that the metal insert and the plastic layer can be tightly bonded during the injection molding process to form a stable structure and improve the quality and performance stability of the product.

[0101] like Figure 1As shown, the reducer 1 is designed to include a brake wheel 13 and at least one gear train installed within the brake wheel 13. The same gear train includes a planetary gear set composed of metal and plastic gears. This hybrid material gear set design effectively reduces the overall weight of the gear train, reduces energy loss, and improves transmission efficiency while ensuring the strength of the gear train. Furthermore, the planetary gears in the planetary gear set are at least partially distributed with alternating metal and plastic gears, further optimizing the force distribution of the gear train and improving its stability and reliability. Specifically, the brake wheel 13 houses a first gear train 16 and a second gear train 17. The input shaft 11 of the reduction clutch drives the first gear train 16, which transmits power to the output shaft 14 of the reduction clutch and the second gear train 17. The second gear train 17 then transmits power to the output shaft sleeve 15 of the reduction clutch. The first gear train 16 includes a set of planetary gears 161, and the second gear train 17 includes a set of planetary gears 171. At least one set of planetary gears uses an alternating distribution of metal gears and plastic gears. In some cases, the metal gears and plastic gears in each set of planetary gears are even alternating. This multi-level optimized design enables the reducer to maintain efficient and stable power transmission performance under different working conditions, effectively balancing the strength and assembly difficulty of the reducer gear train, and ensuring that the gear train is easy to assemble while maintaining stability during operation.

[0102] like Figure 1 The diagram illustrates a reducer structure of the present invention, in which the internal gear set is merely a dual-power distribution reduction output scheme that can achieve mutually opposite directions. Specifically, the input shaft 11 is connected to the output shaft 14 and the second gear train 17 respectively through the first gear train 16. The second gear train 17 is connected to the brake wheel 13. The output shaft sleeve 15 is connected to the brake wheel 13. The output shaft 14 is connected to the planetary gear carrier 162 of the first gear train 16. The input shaft sleeve 12 is connected to the brake wheel cover 131. The brake wheel cover 131 and the brake wheel 13 are separate structures that can rotate relative to each other.

[0103] The first gear train 16 mainly consists of an input shaft gear 111, a first internal gear 18, planetary gears 161, and a planetary gear carrier 162. The input shaft gear 111 is mounted on the upper end of the input shaft 11. The first internal gear 18 is fixed to the inner wall of the brake wheel 13. Multiple planetary gears 161 are mounted on the planetary gear carrier 162 and are evenly distributed on the same circumference of the planetary gear carrier 162. The planetary gears 161 mesh with the input shaft gear 111 and the first internal gear 18 at the same time. The output shaft 14 is connected to the planetary gear carrier 162 as a whole.

[0104] The second gear train 17 mainly consists of a central gear 172, a second internal gear 19, planetary gears 171, and a brake wheel cover 131. The second internal gear 19 is fixedly mounted on the inner wall of the brake wheel 13 cavity and is located below the first internal gear 18. Preferably, it has the same internal gear ring structure as the first internal gear. The central gear 172 is mounted on the planetary gear carrier 162, and the gear shaft of the planetary gear 171 is mounted on the brake wheel cover 131. The planetary gears 171 are evenly distributed on the same circumference of the brake wheel cover 131 and mesh with the central gear 172 and the second internal gear 19. The input shaft sleeve 12 is connected to the brake wheel cover 131 as a whole.

[0105] The washing and spin-drying modes of the washing machine are switched by selectively engaging the clutch sleeve 5 in the clutch 2 with either the fixed plate 3 or the spin-drying plate 4. When the shift fork component 343 moves the clutch sleeve 5 upward to overcome the elastic force of the clutch spring 20, the clutch sleeve 5 disengages from the spin-drying plate 4 and engages with the fixed plate 3. At this time, the washing machine is in the washing mode (including the rinsing stage). The drive motor rotates bidirectionally and repeatedly. The power is transmitted to the output shaft 14 through the input shaft 11 and the first gear train 16 for reduction. The output shaft 14 is then transmitted to the output shaft sleeve 15 through the second gear train 17 for reduction, realizing the bidirectional and repeated rotation of the output shaft 14 and the output shaft sleeve 15. Specifically, in the washing state, the first gear train 16 is in a free state. The input shaft gear 111 drives the planetary gear 161 to rotate. The planetary gear 161 rotates on its own axis and revolves around the sun, which in turn drives the planetary gear carrier 162 to rotate. The output shaft 14 connected to the planetary gear carrier 162 rotates, which drives the water agitator to rotate. The rotation of the output shaft 14 also drives the central gear 172 to rotate, which in turn drives the planetary gear 171 to rotate. Since the clutch bushing 5 is connected to the fixed disk 3, the second gear train 17 is transformed into a fixed-axis gear train. The second gear train 17 cannot revolve around the sun. The rotation of the planetary gear 171 drives the second internal gear 19 to rotate, which in turn drives the brake wheel 13 and the output bushing 15 to rotate, causing the inner tub and the water agitator to rotate in opposite directions.

[0106] When the shift fork component 343 is stopped, the elastic force provided by the clutch spring 20, combined with the gravity of the clutch bushing 5 itself, drives the clutch bushing 5 to separate from the fixed plate 3 and connect with the spin-drying plate 4. At this time, the washing machine is in the spin-drying mode. The drive motor rotates unidirectionally in the set direction. Because the clutch bushing 5 and the spin-drying plate 4 are connected and locked, the input shaft 11, input bushing 12, first gear train 16, second gear train 17, output shaft 14, output bushing 15 and automatic combination become a whole and enter the spin-drying mode.

[0107] In the aforementioned reducer, the number of planetary gears 161 in the first gear train 16 that are evenly distributed on the same circumference of the planetary gear carrier 162 is 3-6, preferably 4; the number of planetary gears 171 in the second gear train 17 that are evenly distributed on the same circumference of the brake wheel cover 131 is 3-6, preferably 4.

[0108] When the number of planetary gears is odd, there is one more metal gear than plastic gear. Two metal gears are adjacent to each other. For example, when there are 5 planetary gears, there are 3 metal gears and 2 plastic gears, with the plastic gears spaced apart between the metal gears, and 2 metal gears placed adjacent to each other. When the number of planetary gears is 4 or 6, the plastic and metal gears are distributed alternately.

[0109] like Figure 7 and Figure 8 As shown, a limiting device is provided between the output shaft sleeve 15 and the output shaft 14 of the deceleration clutch device. Its function is to prevent axial movement of the output shaft 14, ensuring the stability and accuracy of power transmission. This limiting device includes a first limiting member 141 on the output shaft 14, a first rolling bearing 6 between the output shaft sleeve 15 and the output shaft 14, and a second limiting member 151 on the output shaft sleeve 15. The first limiting member 141 and the second limiting member 151 abut against the axial ends of the first rolling bearing 6 in a corresponding manner, and the first limiting member 141, the first rolling bearing 6, and the second limiting member 151 are arranged sequentially along the axial direction of the output shaft 14 away from the reducer 1. This design of the rolling bearing and limiting member further improves the stability of the output shaft and reduces the possibility of axial movement, thereby ensuring the smoothness and reliability of the washing machine during operation.

[0110] By providing a first rolling bearing 6 between the output shaft 14 and the output shaft sleeve 15, the original friction-type shaft sleeve assembly structure can be changed to a rolling structure, avoiding wear caused by excessive friction, reducing the rotational resistance of the output shaft 14, and consequently reducing the gap and leakage problems. During operation, the output shaft 14 rotates relative to the output shaft sleeve 15; the rolling bearing provides both support and noise reduction. Since the output shaft 14 moves up and down under the pull of the agitator during washing, the limiting device in this invention prevents the output shaft 14 from moving upwards and is pulled out. In this invention, the installation state of the deceleration clutch on the washing machine defines the up and down movement.

[0111] Furthermore, the first limiting member 141 is a radially protruding step provided on the outer peripheral wall of the output shaft 14, and the second limiting member 151 is a radially protruding step provided on the inner peripheral wall of the output shaft sleeve 15. These two steps are radially spaced, and the first rolling bearing 6 is installed in the gap, with its two ends corresponding to and abutting against the two steps.

[0112] The output shaft 14 has a diameter-changing section, and the stepped section formed at the diameter-changing point constitutes a first limiting member 141; the inner diameter of the output shaft sleeve 15 has a diameter-changing section, and the stepped section formed at the diameter-changing point constitutes a second limiting member 151. In this invention, the outer diameter of the upper part of the output shaft 14 is smaller than the outer diameter of the lower part, the inner diameter of the upper part of the output shaft sleeve 15 is smaller than the inner diameter of the lower part, and the diameter-changing point on the output shaft 14 is lower than the diameter-changing point on the output shaft sleeve 15.

[0113] In order to ensure stable rotation of the output shaft 14, in a further embodiment, multiple stacked rolling bearings can be continuously arranged along the axial direction of the output shaft 14 to form a first rolling bearing.

[0114] To further limit the axial movement of the first rolling bearing 6 during operation, a retaining ring 142 is provided between the first limiting member 141 of the output shaft 14 and the lower end of the inner ring of the first rolling bearing 6. The retaining ring 142 is sleeved on the outer periphery of the output shaft 14 and supported by the first limiting member 141 of the output shaft 14. The retaining ring 142 can also further isolate the contact wear between the first rolling bearing 6 and the first limiting member 141 of the output shaft 14.

[0115] Furthermore, such as Figure 7 As shown, a second rolling bearing 7 is also provided between the output shaft sleeve 15 and the output shaft 14, and is spaced apart from the first rolling bearing 6 of the limiting device by a first limiting member 141 or a second limiting member 151. That is, the second rolling bearing 7 can be located above or below the first rolling bearing 6, and has a certain distance from the first rolling bearing 6.

[0116] The second rolling bearing 7 and the first rolling bearing 6, arranged at intervals, can support the output shaft 14 at two points within a certain span, so that the central axis of the output shaft 14 is stable when it rotates.

[0117] The first rolling bearing 6 and / or the second rolling bearing 7 are a radial bearing, a thrust bearing, or a radial-thrust bearing.

[0118] In a preferred embodiment, the second rolling bearing 7 is located above the first rolling bearing 6. To support the second rolling bearing 7, a supporting step 152 is provided on the inner peripheral wall of the output shaft sleeve 15, supporting the lower end of the outer ring of the second rolling bearing 7. Since the aforementioned first rolling bearing 6, the second limiting member 151 of the output shaft sleeve 15, and the first limiting member 141 of the output shaft 14 are already sufficient to prevent the output shaft 14 from moving upward, it is only necessary to provide a supporting step 152 on the inner peripheral wall of the output shaft sleeve 15 to support the second rolling bearing 7.

[0119] Alternatively, a fourth limiting member 153 and a third limiting member 143 may also be provided at the upper and lower ends of the second rolling bearing 7, and their structure may be the same as that of the second limiting member and the first limiting member at the upper and lower ends of the first rolling bearing (see [reference]). Figure 8 ).

[0120] The above-mentioned replacement scheme for the limiting device can also be, such as Figure 9 As shown, a third rolling device 8 and an oil-impregnated bearing 9 are provided axially between the output shaft 14 and the output shaft sleeve 15.

[0121] By axially arranging a third rolling device 8 and an oil-impregnated bearing 9 between the output shaft 14 and the output shaft sleeve 15, the third rolling device 8 serves both a supporting function, enabling the output shaft 14 to rotate within the axial through hole of the output shaft sleeve 15, and a noise reduction function during the rotation of the output shaft 14, resulting in lower noise compared to the friction-type assembly structure of the shaft sleeve. The third rolling device 8 prevents excessive wear caused by friction, which could lead to increased radial clearance between the output shaft 14, the output shaft sleeve 15, and mating components, thus preventing water leakage. The oil-impregnated bearing 9 also serves a supporting function, enabling the output shaft 14 to rotate within the axial through hole of the output shaft sleeve 15. The combined arrangement of the third rolling device 8 and the oil-impregnated bearing 9 reduces costs and improves the operating performance of the output shaft 14.

[0122] In order to improve the stability of the output shaft 14 rotation, the third rolling device 8 and the oil-impregnated bearing 9 are spaced apart along the axial direction of the output shaft 14. In this way, the third rolling device 8 and the oil-impregnated bearing 9 provide support for the output shaft 14 within a certain span, making the rotation of the output shaft 14 more stable.

[0123] The third rolling device 8 is located above the oil-impregnated bearing 9. This serves two purposes: firstly, it facilitates installation; secondly, it prevents wear on the upper part of the output shaft 14 that mates with the third rolling device 8, which could cause the output shaft 14 to wobble during rotation, and it also prevents water leakage.

[0124] In order to fix the oil-impregnated bearing 9 in the axial through hole of the output shaft sleeve 15, the outer periphery of the oil-impregnated bearing 9 is interference-fitted with the axial through hole of the output shaft sleeve 15. In order to provide support for the output shaft 14 without causing wear, the inner hole of the oil-impregnated bearing 9 is clearance-fitted with the outer periphery of the output shaft 14.

[0125] Since the output shaft 14 is pulled upward during washing, a retaining ring 142 is provided as a limiting device to restrict the upward movement of the output shaft 14. To install the retaining ring 142, an annular groove 144 is provided on the output shaft 14, and the annular groove 144 is located below the oil-impregnated bearing 9. The retaining ring 142 is located within the annular groove 144 and below the oil-impregnated bearing 9. Thus, when the output shaft 14 is pulled upward, the lower wall of the annular groove 144 on the output shaft 14 is pressed by the retaining ring 142, which in turn is pressed by the oil-impregnated bearing 9. The oil-impregnated bearing 9 is interference-fitted into the axial through hole of the output shaft sleeve 15, thereby preventing the output shaft 14 from moving upward.

[0126] Since the snap ring 142 rotates with the output shaft 14, in order to reduce the friction between the snap ring 142 and the oil-impregnated bearing 9, and to avoid the output shaft 14 having room to move upward due to an excessive gap between the snap ring 142 and the lower end of the oil-impregnated bearing 9, the snap ring 142 and the lower end of the oil-impregnated bearing 9 are fitted with a clearance.

[0127] Furthermore, to better prevent the output shaft 14 from moving axially, a positioning sleeve 154 is provided between the output shaft 14 and the output shaft sleeve 15. To limit the output shaft 14 with the positioning sleeve 154, the outer peripheral wall of the output shaft 14 has a radially protruding step, forming an annular disk 145. The annular disk 145 is located above the third rolling device 8, and the positioning sleeve 154 is located above the annular disk 145. The outer diameter of the annular disk 145 is larger than the inner diameter of the positioning sleeve 154. The outer periphery of the positioning sleeve 154 is interference-fitted with the axial through hole of the output shaft sleeve 15. Therefore, the positioning sleeve 154 can resist the annular disk 145 on the output shaft 14, thereby preventing the output shaft 14 from moving upward.

[0128] To prevent wear caused by friction between the positioning sleeve 154 and the outer circumference of the output shaft 14, the inner hole of the positioning sleeve 154 is clearance-fitted with the outer circumference of the output shaft 14. To prevent wear caused by friction between the positioning sleeve 154 and the annular disk 145, the lower end of the positioning sleeve 154 is clearance-fitted with the upper end of the annular disk 145.

[0129] The third rolling device 8 is a single device or a group of third rolling devices 8 arranged continuously along the axial direction of the output shaft 14. When the third rolling device 8 is a group of third rolling devices 8, it can increase the contact surface between the bearing and the output shaft sleeve 15 and the output shaft 14, improve the overall strength, and enhance the torque of the axial stirring of the output shaft 14.

[0130] When the third rolling device 8 is a group, it is one or more combinations of radial bearing, thrust bearing, or radial-thrust bearing.

[0131] In a further embodiment, only the snap ring 142 and the annular groove 144 on the matching output shaft 14 can be provided to limit the output shaft 14 and prevent the output shaft 14 from being pulled up and down by the water stirring device.

[0132] In other embodiments, only the positioning sleeve 154 and the matching outer peripheral disk of the output shaft 14 can be provided to limit the output shaft 14 and prevent the output shaft 14 from being pulled up and down by the water stirring device.

[0133] In order to enhance the strength of the output shaft 14, the axial thickness of the annular disk 145 on the output shaft 14 can be increased, thereby increasing the diameter of the output shaft and enhancing the strength of the output shaft 14.

[0134] In a further embodiment, when the output shaft 14 moves up and down due to the agitation device during washing, it is still rotating. Friction occurs between the annular disc 145 and the positioning sleeve 154 on the output shaft 14. To avoid wear caused by this friction, a thrust ball bearing is fitted onto the output shaft 14, located between the annular disc 145 and the positioning sleeve 154. This thrust ball bearing can withstand axial loads while preventing wear between the disc 8 and the positioning sleeve 154. 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 154.

[0135] This invention also provides a washing machine equipped with the aforementioned deceleration clutch device, comprising an outer tub, an inner tub rotatably disposed within the outer tub, and a water agitator installed within the inner tub. The water agitator is connected to the output shaft of the deceleration clutch device, and the inner tub is sleeved to the output shaft. The specific structure of the water agitator is as follows: it includes a support column and a water agitator disc. The support column is sleeved on the output shaft and extends from the bottom of the inner tub towards the inner tub opening, providing a stable support structure for the water agitator disc. The water agitator disc is positioned on the support column, maintaining a certain distance from the bottom of the inner tub, forming a washing space for clothes to tumble and wash. This design allows clothes to fully contact the water flow during washing, improving the washing effect. Furthermore, below the water agitator disc, there is a guide component extending upwards and outwards from the center. This guide component cleverly guides the clothes to tumble outwards, effectively avoiding tangling during washing and further improving the washing performance and user experience of the washing machine.

[0136] This invention's washing machine features a highly efficient water agitation device. During washing, the upward pull of the agitator disc is significant. A limiting device between the output shaft and its sleeve effectively restricts the vertical movement of the output shaft. In this reduction clutch and washing machine, the planetary gears in the first and second gear trains employ an alternating distribution of metal and plastic gears. This structure reduces noise while maintaining the strength of the gear train. The rolling bearings and limiting device significantly improve the radial friction resistance of the output shaft, as well as its axial anti-pull-out and axial friction resistance, thereby reducing noise and effectively ensuring a longer lifespan for the reduction clutch when used in this invention's washing machine, ultimately improving the user experience.

[0137] In summary, the washing machine deceleration clutch device and its matching washing machine of the present invention, through careful design and optimized combination of various components, effectively solve many problems existing in the prior art, such as the balance between the strength and assembly difficulty of the deceleration clutch device and the problem of clothes tangling in the washing machine's water agitation device, significantly improving the overall performance and reliability of the washing machine, and providing users with a more efficient, stable and convenient washing experience.

[0138] 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 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 washing machine speed reduction clutch device, comprising a speed reducer and a clutch, the clutch comprising, A fixed disc is mounted on the reducer; Its features are, The fixed disk is provided with a metal insert, the metal insert having meshing teeth, and at least a non-metallic layer is provided on the surface of the meshing teeth of the metal insert.

2. The washing machine deceleration clutch device according to claim 1, characterized in that, The fixed disk includes, The engagement part is used to engage with the clutch shaft sleeve of the clutch; The mounting part is connected to the engaging part and is used to fix the engaging part; The engaging portion includes the metal insert and a non-metallic layer disposed outside the metal insert; Preferably, the non-metallic layer is a plastic layer, a rubber layer, or a non-metallic composite material layer; Preferably, the mounting part has a ring-shaped structure, and a protruding sleeve is provided coaxially near the inner ring, with the engaging part located inside the sleeve.

3. The washing machine deceleration clutch device according to claim 2, characterized in that, The mounting part is an injection molded part integrally injection molded on the outer periphery of the metal insert; Preferably, the mounting portion is injection molded with a hinge seat; Preferably, the plastic layers of the mounting portion and the engaging portion are integrally injection molded parts.

4. The washing machine deceleration clutch device according to claim 2, characterized in that, The mounting section has metal parts inside and a plastic layer injected on the outside; Preferably, the metal insert and the metal parts in the mounting section are separate structures, but are connected as one piece by injection molding; Alternatively, the metal insert and the metal parts within the mounting section may be an integral structure.

5. The washing machine deceleration clutch device according to claim 1, characterized in that, The fixed plate includes a non-metallic body, which has a mounting groove that matches the metal insert, and the metal insert is installed in the mounting groove. Preferably, the non-metallic body is made of plastic, rubber, or a non-metallic composite material; Preferably, the non-metallic body is an injection molded part or an extruded part.

6. The washing machine deceleration clutch device according to any one of claims 1-5, characterized in that, The meshing teeth of the metal insert are end-face teeth, which extend to the side opposite to the reducer. Preferably, the metal insert includes a support ring and a plurality of meshing teeth disposed on the support ring, the plurality of meshing teeth protruding from the side end face of the support ring opposite to the reducer and evenly distributed at intervals along the circumferential direction of the support ring; Preferably, the support ring and the meshing teeth are machined as a single metal part.

7. The washing machine deceleration clutch device according to claim 6, characterized in that, The support ring is provided with a positioning part for positioning with the injection mold; Preferably, the positioning part is an integrally formed notch on the inner peripheral wall of the support ring; Preferably, there are at least two notches, and they are preferably evenly distributed around the support ring.

8. The washing machine deceleration clutch device according to any one of claims 1-7, characterized in that, The reducer includes a brake wheel and at least one gear train installed in the brake wheel, the same gear train including a planetary gear set composed of metal gears and plastic gears; Preferably, the planetary gears in the planetary gear set are at least partially composed of alternating metal and plastic gears; Preferably, a first gear train and a second gear train are installed inside the brake wheel. The input shaft of the deceleration clutch drives the first gear train, the first gear train transmits power to the output shaft of the deceleration clutch and the second gear train, and the second gear train transmits power to the output shaft sleeve of the deceleration clutch. The first gear train includes a set of planetary gears, the second gear train includes a set of planetary gears, and at least one set of planetary gears uses alternating metal gears and plastic gears; Preferably, metal gears and plastic gears are alternately distributed in each set of planetary gears.

9. The washing machine deceleration clutch device according to any one of claims 1-8, characterized in that, A limiting device is provided between the output shaft sleeve and the output shaft of the deceleration clutch to prevent the output shaft from moving axially; Preferably, the limiting device includes a first limiting member on the output shaft, a rolling bearing between the output shaft sleeve and the output shaft, and a second limiting member on the output shaft sleeve; the first limiting member and the second limiting member abut against the two ends of the rolling bearing in a one-to-one correspondence. Preferably, the first limiting member, the rolling bearing, and the second limiting member are arranged sequentially along the output shaft axis in a direction away from the reducer; Preferably, another rolling bearing is provided between the output shaft sleeve and the output shaft, with a first limiting member or a second limiting member spaced apart from the rolling bearing of the limiting device.

10. A washing machine having a deceleration clutch device as described in any one of claims 1-9, characterized in that, It includes an inner tank and a water agitator installed in the inner tank, the water agitator being connected to the output shaft of a deceleration clutch; Preferably, the water stirring device includes, The support column is sleeved on the output shaft and extends from the bottom of the inner barrel toward the opening of the inner barrel. The agitator is mounted on a support column and is a certain distance from the bottom of the inner tub, forming a washing space for clothes to tumble and wash. Below the agitator is a guide component that extends upward from the center to the outer periphery to guide the clothes to tumble outward.

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