A silent washing shaft

Abstract

This utility model discloses a silent washing shaft, belonging to the technical field of washing machine accessories. Its key technical features include a washing shaft body, with a pulsator shaft fixedly connected to the top of the washing shaft body. The pulsator shaft is rectangular, and a rectangular cavity is formed inside the pulsator shaft. This utility model flexibly connects the washing shaft body to the washing machine casing via a support shaft fitted with a rubber damping ring. This effectively buffers vibrations generated during high-speed rotation and load changes, significantly reducing frictional noise with the casing and improving the silent operation. Simultaneously, an adjusting limit assembly drives the vertical rod, fixing ring, and arc-shaped push rod to extend and retract the locking rod on the plate, replacing traditional bolt connections with a mechanical snap-fit ​​method. This completely avoids the loosening problem caused by high-frequency rotation and alternating stress of bolts. Combined with the auxiliary clamping function of the first spring, this ensures a stable and reliable connection between the pulsator and the pulsator shaft, adapting to the washing needs of clothes of different weights and extending service life.

Description

Technical Field

[0001] This utility model relates to the field of washing machine accessories technology, specifically a silent washing shaft. Background Technology

[0002] Washing machines are mainly divided into top-loading (pulsator) washing machines and front-loading (drum) washing machines. Front-loading washing machines operate the drum by changing the spin speed and torque, thus applying washing and spin-drying modes. In the case of top-loading washing machines, the drum's rotation is stopped while the laundry is inside, and the pulsator inside the drum rotates to create water flow, thus executing the washing mode. In the spin-drying mode, the drum rotates, causing the clothes inside to be dehydrated by centrifugal force.

[0003] For example, Chinese patent CN216891620U discloses a washing shaft, including a shaft body. The shaft body includes a washing shaft main body, a pulsator connecting unit fixedly connected to the top of the washing shaft main body, and a gear frame connecting unit fixedly connected to the bottom of the washing shaft main body. The pulsator connecting unit includes a pulsator shaft, a pulsator connecting section fixedly connected to the surface of the pulsator shaft, a groove formed on the inner side wall of the pulsator shaft, a snap-fit ​​component slidably connected to the inner side wall of the groove, and a return spring fixedly connected to the inner side wall of the snap-fit ​​component. In this washing shaft, the pulsator connecting section is serrated, which facilitates the connection between the pulsator and the pulsator shaft and increases torque, improving the stability of the connection between the pulsator shaft and the pulsator. After the bolt is inserted into the pulsator, it is threaded into the mounting hole on the surface of the pulsator shaft. When the bolt moves downward, it pushes two push blocks to compress the return spring, thereby pushing the snap-fit ​​component to engage with the snap-fit ​​groove on the inner wall of the pulsator, further improving the stability of the pulsator and the pulsator shaft.

[0004] However, traditional washing shaft support structures are mostly rigid connections. During high-speed rotation or load changes, they are prone to vibration and friction with the washing machine casing, resulting in significant noise and impacting user experience. Furthermore, the snap-fit ​​locking structure relies on bolt drive and spring return, which is susceptible to wear and jamming after prolonged use. Adjusting the locking force is also inconvenient, making it difficult to adapt to the washing needs of different weights of laundry. Additionally, the washing shaft operates at high frequency, causing slight displacement in the fit between the impeller and the shaft due to vibration. This results in the threaded connection between the bolt and the mounting hole being continuously subjected to alternating stress. Over time, the threaded pair is prone to wear and fatigue, creating gaps. Especially when the washing load changes (such as uneven distribution of laundry), the bolt is subjected to radial impact forces, making it prone to loosening or even falling off. Loose bolts not only reduce the connection strength between the impeller and the shaft, leading to unstable torque transmission and reduced washing performance, but may also cause the locking block and slot to malfunction, exacerbating friction and collisions between components, generating abnormal noise, and even causing more serious mechanical failures such as impeller misalignment and shaft wear. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a silent washing shaft. This solution solves the problems mentioned in the background section, where the support structure of traditional washing shafts is mostly a rigid connection. During high-speed rotation or load changes, this connection easily vibrates and rubs against the washing machine casing, resulting in significant noise and impacting user experience. Furthermore, the snap-fit ​​locking structure relies on bolt drive and spring return, which is prone to jamming due to wear after prolonged use. The locking force is also inconvenient to adjust, making it difficult to adapt to the washing needs of different weights of clothing. Additionally, the washing shaft is constantly rotating at high frequency, and the clearance between the impeller and the shaft will shift slightly with vibration, causing the threaded connection between the bolt and the mounting hole to continuously bear alternating stress. After long-term use, the threaded pair is prone to wear and fatigue, creating gaps. Especially when the washing load changes (such as uneven distribution of clothes), the bolt is subjected to radial impact force, easily leading to loosening or even detachment. Loose bolts not only reduce the connection strength between the impeller and the shaft, resulting in unstable torque transmission and reduced washing performance, but may also cause the locking block and slot to malfunction, exacerbating friction and collision between components, generating abnormal noise, and even causing more serious mechanical failures such as impeller misalignment and shaft wear.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A silent washing shaft includes a washing shaft body. A pulsator shaft is fixedly connected to the top of the washing shaft body. The pulsator shaft is rectangular and has a rectangular cavity inside. A vertical rod is rotatably connected to the bottom center of the rectangular cavity. Two fixed rings, spaced vertically apart, are fixedly connected to the vertical rod. Four plates are arranged in a circular array around the vertical rod inside the rectangular cavity. The four plates correspond to the four inner sides of the rectangular cavity. Several locking rods are fixedly connected to the side of each plate away from the vertical rod. A circular hole corresponding to the locking rod is opened on the pulsator shaft. A sealing assembly adapted to the locking rod is installed in the circular hole. An arc-shaped push rod is hinged between each plate and the two fixed rings. The arc of the push rod adapts to the linear movement trajectory of the plate. A reinforcing plate is fixedly connected near the top of the rectangular cavity. The vertical rod is rotatably connected to the reinforcing plate. The top of the vertical rod extends to the top of the reinforcing plate and is connected to a fixed rod via a telescopic connecting assembly. The top of the fixed rod extends to the top of the pulsator shaft and is connected to an adjusting limit assembly.

[0008] Preferably, the adjusting limiting assembly includes a fan-shaped groove on the top of the impeller shaft, a rotating plate located in the fan-shaped groove is fixedly connected to the top of the fixing rod, two spaced limiting rods are fixedly connected to the bottom of the fan-shaped groove, and a limiting hole adapted to the limiting rod is provided on the rotating plate. When the rotating plate rotates to the state where the locking rod is extended or retracted, the limiting hole engages with the two limiting rods respectively to limit the movement.

[0009] Preferably, the washing shaft body is provided with two support shafts spaced vertically apart. A rubber damping ring is sleeved on the outside of the support shaft. The support shaft is used to rotatably connect with the washing machine shell. The rubber damping ring is sandwiched between the support shaft and the shell. The outer end of the locking rod is rounded, the surface is nitrided, and a solid lubricant is applied.

[0010] Preferably, a lifting handle is fixedly connected to the top of the rotating plate, and the fixing rod is slidably and rotatably connected to the impeller shaft, with a sealing sleeve provided at the connection point.

[0011] Preferably, each of the four inner walls of the rectangular cavity is fixedly connected to a guide slide rod, and the other end of the guide slide rod is fixedly connected to a limiting plate. The plate is slidably mounted on the guide slide rod, and a first spring is sleeved on the guide slide rod between the limiting plate and the plate. The two ends of the first spring are fixedly connected to the limiting plate and the plate, respectively.

[0012] Preferably, the sealing assembly includes an annular mounting groove formed on the inner wall of the circular hole, and an O-ring seal adapted to the locking rod is provided in the annular mounting groove. The O-ring seal is made of wear-resistant nitrile rubber, and its inner diameter is slightly smaller than the outer diameter of the locking rod to ensure that the seal is maintained during the extension and retraction process.

[0013] Preferably, the retractable connecting assembly includes an outer rectangular sleeve fixedly connected to the top of the vertical rod. The top of the outer rectangular sleeve is open, and an inner rectangular sleeve is slidably connected inside it. The bottom of the inner rectangular sleeve is open, and a second spring is fixedly connected to the inner top of the inner rectangular sleeve. The bottom end of the second spring is fixedly connected to the inner bottom of the outer rectangular sleeve.

[0014] Preferably, the four side walls of the outer rectangular sleeve are provided with limiting grooves, and the four outer sides of the inner rectangular sleeve are fixedly connected with limiting slide rods adapted to the limiting grooves, and the four limiting slide rods move longitudinally within the four limiting grooves respectively.

[0015] Compared with the prior art, the present invention provides a silent washing shaft, which has the following beneficial effects:

[0016] 1. This utility model flexibly connects the washing shaft body with the washing machine shell through a support shaft fitted with a rubber damping ring. This effectively buffers the vibration generated during high-speed rotation and load changes, significantly reducing friction noise with the shell and improving the quietness. At the same time, the adjustment limit component drives the vertical rod, fixing ring, and arc-shaped push rod to extend and retract the locking rod on the plate, replacing the traditional bolt connection with a mechanical snap-fit ​​method. This completely avoids the loosening problem caused by high-frequency rotation and alternating stress of bolts. Combined with the auxiliary clamping function of the first spring, it ensures a stable and reliable connection between the impeller and the impeller shaft, adapting to the washing needs of clothes of different weights and extending the service life.

[0017] 2. In this utility model, the guide slide rod inside the rectangular cavity provides precise guidance for the plate, and combined with the matching curvature of the arc-shaped push rod, it ensures smooth extension and retraction of the locking rod without jamming; the telescopic connection component adapts to axial displacement through the outer rectangular sleeve, inner rectangular sleeve and second spring, and the limiting slide rod and limiting through groove cooperate to ensure stable torque transmission; the O-ring seal of the sealing component and the sealing sleeve at the fixing rod effectively prevent washing water from seeping in, and the reinforcing plate enhances the support strength of the vertical rod when it rotates. The overall structure not only solves the noise problem and bolt loosening risk of traditional washing shafts, but also improves connection stability and sealing reliability, resulting in better overall performance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the impeller shaft in this utility model;

[0020] Figure 3 This is a cross-sectional view of the impeller shaft in this utility model;

[0021] Figure 4 In this utility model Figure 3 A magnified structural diagram at point A;

[0022] Figure 5 This is a schematic diagram of the internal components of the impeller shaft in this utility model.

[0023] The following components are labeled in the diagram: 1. Washing shaft body; 2. Impeller shaft; 3. Rectangular cavity; 4. Vertical rod; 5. Fixing ring; 6. Plate; 7. Locking rod; 8. Round hole; 9. Sealing assembly; 901. Annular mounting groove; 902. O-ring seal; 10. Arc-shaped push rod; 11. Reinforcing plate; 12. Telescopic connecting assembly; 1201. Outer rectangular sleeve; 1202. Inner rectangular sleeve; 1203. Second spring; 13. Fixing rod; 14. Rotating plate; 15. Fan-shaped groove; 16. Limiting rod; 17. Limiting hole; 18. Support shaft; 19. Rubber damping ring; 20. Lifting handle; 21. Guide slide rod; 22. Limiting plate; 23. First spring; 24. Limiting through groove; 25. Limiting slide rod; 26. Sealing sleeve. Detailed Implementation

[0024] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0025] Example 1

[0026] Please refer to Figures 1 to 5As shown, a silent washing shaft includes a washing shaft body 1. A pulsator shaft 2 is fixedly connected to the top of the washing shaft body 1. The pulsator shaft 2 is rectangular, and a rectangular cavity 3 is formed inside the pulsator shaft 2. A vertical rod 4 is rotatably connected to the bottom center of the rectangular cavity 3. Two fixed rings 5, spaced vertically, are fixedly connected to the vertical rod 4. Four plates 6 are arranged in a circular array around the vertical rod 4 inside the rectangular cavity 3. The four plates 6 correspond to the four inner sides of the rectangular cavity 3. Several locking rods 7 are fixedly connected to the side of the plates 6 facing away from the vertical rod 4. A pulsator shaft 2 has... There is a circular hole 8 corresponding to the locking rod 7. A sealing component 9 adapted to the locking rod 7 is provided in the circular hole 8. Each plate 6 and the two fixing rings 5 ​​are hinged with an arc-shaped push rod 10. The arc of the arc-shaped push rod 10 is adapted to the linear movement trajectory of the plate 6. A reinforcing plate 11 is fixedly connected to the rectangular cavity 3 near the top. The vertical rod 4 is rotatably connected to the reinforcing plate 11. The top of the vertical rod 4 extends to the top of the reinforcing plate 11 and is connected to a fixed rod 13 through a telescopic connecting component 12. The top of the fixed rod 13 extends to the top of the impeller shaft 2 and is connected to an adjustment limit component.

[0027] Those skilled in the art will understand that the impeller shaft 2, which is fixedly connected to the top of the washing shaft body 1, has a rectangular cavity 3 inside. The vertical rod 4 at the bottom center of the rectangular cavity 3 is connected to the arc-shaped push rod 10 through two upper and lower fixing rings 5. The arc-shaped push rod 10 is hinged to four plates 6. A locking rod 7 is provided on the side of the plate 6 away from the vertical rod 4. The locking rod 7 can be extended and retracted through the round hole 8 on the impeller shaft 2. The vertical rod 4 is supported by the reinforcing plate 11 and connected to the fixed rod 13 through the telescopic connecting assembly 12. The adjusting limit assembly at the top of the fixed rod 13 can drive the vertical rod 4 to rotate, thereby pushing the plate 6 and the locking rod 7 to move through the fixing rings 5 ​​and the arc-shaped push rod 10. The sealing assembly 9 in the round hole 8 ensures sealing during extension and retraction.

[0028] The impeller is fixed by extending and retracting the locking rod 7 through a mechanical structure, replacing the traditional bolt connection and avoiding the problem of bolt loosening; the arc-shaped push rod 10 adapts to the movement trajectory of the plate 6, reducing jamming; the reinforcing plate 11 improves the rotational stability of the vertical rod 4, and the overall structure enhances the connection reliability.

[0029] Example 2

[0030] Furthermore, the adjusting limit assembly includes a sector-shaped groove 15 opened on the top of the impeller shaft 2, a rotating plate 14 located in the sector-shaped groove 15 is fixedly connected to the top of the fixing rod 13, and two spaced limit rods 16 are fixedly connected to the bottom of the sector-shaped groove 15. The rotating plate 14 is provided with a limit hole 17 that matches the limit rod 16. When the rotating plate 14 rotates to the state where the locking rod 7 is extended or retracted, the limit hole 17 engages with the two limit rods 16 respectively to limit the movement.

[0031] Those skilled in the art will understand that, in the adjusting limit assembly, two limit rods 16 are provided in the fan-shaped groove 15 at the top of the impeller shaft 2, and a limit hole 17 is provided on the rotating plate 14 at the top of the fixed rod 13; when the rotating plate 14 is rotated, the limit hole 17 rotates with it, and when the locking rod 7 is fully extended or retracted, the limit hole 17 engages with the two limit rods 16 respectively, limiting the displacement of the rotating plate 14.

[0032] The locking rod 7 is precisely locked in its extension and retraction state by engaging with the limiting hole 17 and the limiting rod 16, preventing locking failure due to vibration during operation; the fan-shaped groove 15 limits the rotation angle of the rotating plate 14, avoiding damage to components due to excessive operation and improving structural safety.

[0033] Example 3

[0034] Furthermore, the washing shaft body 1 is provided with two support shafts 18 spaced apart vertically. A rubber damping ring 19 is sleeved on the outside of the support shaft 18. The support shaft 18 is used to rotate and connect with the washing machine shell. The rubber damping ring 19 is sandwiched between the support shaft 18 and the shell. The outer end of the locking rod 7 is rounded and the surface is nitrided and coated with solid lubricant.

[0035] Those skilled in the art will understand that the two support shafts 18 on the washing shaft body 1 are fitted with rubber damping rings 19. When the support shafts 18 are connected to the washing machine housing, the rubber damping rings 19 are sandwiched between the two to buffer vibration. The outer end of the locking rod 7 is rounded and nitrided, and coated with solid lubricant to reduce friction with the round hole 8 and the impeller during extension and retraction.

[0036] The rubber damping ring 19 effectively reduces the vibration and friction noise between the washing shaft and the housing, achieving a silent effect; the surface treatment of the locking rod 7 enhances wear resistance, reduces frictional loss with the sealing component 9, and extends service life; the solid lubricant further improves the smoothness of extension and retraction.

[0037] Example 4

[0038] Furthermore, a lifting handle 20 is fixedly connected to the top of the rotating plate 14, and the fixed rod 13 is slidably and rotatably connected to the impeller shaft 2, with a sealing sleeve 26 provided at the connection point.

[0039] Those skilled in the art will understand that the lifting handle 20 on the top of the rotating plate 14 facilitates the operation of the rotating plate 14, the fixing rod 13 is slidably and rotatably connected to the impeller shaft 2, and the sealing sleeve 26 at the connection prevents water from seeping into the rectangular cavity 3.

[0040] The lifting handle 20 improves the ease of adjustment; the sealing sleeve 26 enhances the sealing at the connection between the fixing rod 13 and the impeller shaft 2, and works with the sealing component 9 for double waterproofing to prevent internal parts from rusting; the compound movement of the fixing rod 13 ensures smooth linkage between the adjustment limit component and the vertical rod 4.

[0041] Example 5

[0042] Furthermore, guide slide rods 21 are fixedly connected to the four inner walls of the rectangular cavity 3. The other end of the guide slide rod 21 is fixedly connected to a limiting plate 22. The plate 6 is slidably mounted on the guide slide rod 21. A first spring 23 is sleeved on the guide slide rod 21 between the limiting plate 22 and the plate 6. The two ends of the first spring 23 are fixedly connected to the limiting plate 22 and the plate 6, respectively.

[0043] Those skilled in the art will understand that the guide slide rod 21 on the inner wall of the rectangular cavity 3 passes through the plate 6, and the plate 6 can slide along the guide slide rod 21. The first spring 23 on the guide slide rod 21 connects the limiting plate 22 and the plate 6. When the locking rod 7 retracts, the first spring 23 is compressed, and conversely, it releases the elastic force to push the plate 6 to reset.

[0044] The guide slide 21 provides precise guidance for the plate 6, ensuring the stability of the extension and retraction direction of the locking rod 7; the first spring 23 assists the plate 6 in resetting, reducing the operating force.

[0045] Example 6

[0046] Furthermore, the sealing assembly 9 includes an annular mounting groove 901 formed in the inner wall of the circular hole 8. An O-ring 902 adapted to the locking rod 7 is provided in the annular mounting groove 901. The O-ring 902 is made of wear-resistant nitrile rubber and its inner diameter is slightly smaller than the outer diameter of the locking rod 7 to ensure that the seal is maintained during the extension and retraction process.

[0047] Those skilled in the art will understand that the annular mounting groove 901 of the sealing assembly 9 is provided with an O-ring 902. The O-ring 902 is made of wear-resistant nitrile rubber and its inner diameter is slightly smaller than the outer diameter of the locking rod 7. When the locking rod 7 extends or retracts, the O-ring 902 always fits tightly against its surface.

[0048] The O-ring 902 achieves dynamic sealing through an interference fit, preventing washing water from entering the rectangular cavity 3 through the round hole 8; the wear-resistant material adapts to long-term friction, ensuring long-lasting sealing performance and extending the service life of internal components.

[0049] Example 7

[0050] Furthermore, the retractable connection assembly 12 includes an outer rectangular sleeve 1201 fixedly connected to the top of the vertical rod 4. The top of the outer rectangular sleeve 1201 is open, and an inner rectangular sleeve 1202 is slidably connected inside it. The bottom of the inner rectangular sleeve 1202 is open, and a second spring 1203 is fixedly connected to the inner top of the inner rectangular sleeve 1202. The bottom end of the second spring 1203 is fixedly connected to the inner bottom of the outer rectangular sleeve 1201.

[0051] Those skilled in the art will understand that in the telescopic connection assembly 12, the outer rectangular sleeve 1201 is fixed to the top of the vertical rod 4, and the inner rectangular sleeve 1202 is slidably sleeved inside the outer rectangular sleeve 1201. The two are connected by the second spring 1203. When the fixed rod 13 is subjected to axial force, the inner rectangular sleeve 1202 slides along the outer rectangular sleeve 1201 and compresses or stretches the second spring 1203. The rectangular structure ensures stable torque transmission.

[0052] Example 8

[0053] Furthermore, each of the four side walls of the outer rectangular sleeve 1201 is provided with a limiting groove 24, and each of the four outer sides of the inner rectangular sleeve 1202 is fixedly connected with a limiting slide rod 25 that is adapted to the limiting groove 24. The four limiting slide rods 25 move longitudinally within the four limiting grooves 24 respectively.

[0054] Those skilled in the art will understand that the limiting groove 24 on the side wall of the outer rectangular sleeve 1201 cooperates with the limiting slide rod 25 on the outer side of the inner rectangular sleeve 1202. When the inner rectangular sleeve 1202 slides along the outer rectangular sleeve 1201, the limiting slide rod 25 moves longitudinally within the limiting groove 24, restricting the relative rotation of the two and limiting the maximum sliding stroke.

[0055] The cooperation between the limiting slide bar 25 and the limiting through groove 24 limits the extension stroke, prevents the second spring 1203 from being overstretched or compressed, protects the telescopic connection component 12, and extends its service life.

[0056] The working principle and usage procedure of this device are as follows: During use, the rotating plate 14 is lifted upwards by pulling the handle 20, causing the fixed rod 13 to drive the inner rectangular sleeve 1202 of the telescopic connecting assembly 12 to slide upwards within the outer rectangular sleeve 1201. The second spring 1203 is stretched, and the limiting slide rod 25 moves synchronously along the limiting through groove 24 until the limiting hole 17 of the rotating plate 14 disengages from the limiting rod 16 within the fan-shaped groove 15. Subsequently, the rotating plate 14 is rotated, causing the vertical rod 4 to rotate under the support of the reinforcing plate 11 via the fixed rod 13. The fixing ring 5 on the vertical rod 4 rotates accordingly, pushing the arc-shaped push rod 10 to move the plate 6 along the guide slide rod 21 towards the inner wall of the rectangular cavity 3. Simultaneously, the first spring 23 assists... The push plate 6 slides along the guide slide bar 21, and the locking rod 7 extends through the round hole 8. At this time, the pull handle 20 is released, the second spring 1203 resets and drives the inner rectangular sleeve 1202 to move down, and the limiting hole 17 engages with the corresponding limiting rod 16 to fix it, thus completing the pulsator locking. During washing or spin-drying, the washing shaft body 1 is flexibly connected to the washing machine shell through the support shaft 18 with the rubber damping ring 19 to reduce noise. The O-ring 902 of the sealing component 9 and the sealing sleeve 26 at the fixing rod 13 prevent water from seeping in. When disassembling, the rotating plate 14 is lifted and rotated in the opposite direction to compress the first spring 23, the locking rod 7 retracts into the round hole 8, and the limiting hole 17 engages with the other limiting rod 16.

[0057] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A silent washing shaft, comprising a washing shaft body (1), characterized in that, The washing shaft body (1) is fixedly connected to the top of the impeller shaft (2). The impeller shaft (2) is rectangular. A rectangular cavity (3) is opened inside the impeller shaft (2). A vertical rod (4) is rotatably connected to the bottom center of the rectangular cavity (3). Two fixed rings (5) are fixedly connected to the vertical rod (4) at intervals. Four plates (6) are arranged in a ring array around the vertical rod (4) inside the rectangular cavity (3). The four plates (6) correspond to the four inner sides of the rectangular cavity (3). Several locking rods (7) are fixedly connected to the side of the plate (6) away from the vertical rod (4). The impeller shaft (2) is provided with a locking rod (7) opposite to the locking rod (7). The corresponding circular hole (8) is provided with a sealing component (9) that is compatible with the locking rod (7). Each plate (6) is hinged to the two fixing rings (5) with an arc-shaped push rod (10). The arc of the arc-shaped push rod (10) is adapted to the linear motion trajectory of the plate (6). A reinforcing plate (11) is fixedly connected to the rectangular cavity (3) near the top. The vertical rod (4) is rotatably connected to the reinforcing plate (11). The top of the vertical rod (4) extends to the top of the reinforcing plate (11) and is connected to a fixed rod (13) through a telescopic connection component (12). The top of the fixed rod (13) extends to the top of the impeller shaft (2) and is connected to an adjustment limit component.

2. The silent washing shaft according to claim 1, characterized in that, The adjustment limiting assembly includes a fan-shaped groove (15) opened on the top of the impeller shaft (2). The top of the fixed rod (13) is fixedly connected to a rotating plate (14) located in the fan-shaped groove (15). Two spaced limiting rods (16) are fixedly connected to the bottom of the fan-shaped groove (15). The rotating plate (14) is provided with limiting holes (17) that are adapted to the limiting rods (16). When the rotating plate (14) rotates to the state where the locking rod (7) is extended or retracted, the limiting holes (17) engage with the two limiting rods (16) respectively to limit the movement.

3. A silent washing shaft according to claim 1, characterized in that, The washing shaft body (1) is provided with two support shafts (18) spaced apart vertically. A rubber damping ring (19) is sleeved on the outside of the support shaft (18). The support shaft (18) is used to rotatably connect with the washing machine shell. The rubber damping ring (19) is sandwiched between the support shaft (18) and the shell. The outer end of the locking rod (7) is rounded and the surface is nitrided and coated with solid lubricant.

4. A silent washing shaft according to claim 2, characterized in that, The top of the rotating plate (14) is fixedly connected to a lifting handle (20), and the fixed rod (13) is slidably and rotatably connected to the impeller shaft (2), with a sealing sleeve (26) provided at the connection.

5. A silent washing shaft according to claim 1, characterized in that, The four inner walls of the rectangular cavity (3) are all fixedly connected with guide slide rods (21). The other end of the guide slide rod (21) is fixedly connected with a limiting plate (22). The plate (6) is slidably disposed on the guide slide rod (21). A first spring (23) is sleeved on the guide slide rod (21) between the limiting plate (22) and the plate (6). The two ends of the first spring (23) are fixedly connected to the limiting plate (22) and the plate (6) respectively.

6. A silent washing shaft according to claim 1, characterized in that, The sealing assembly (9) includes an annular mounting groove (901) formed on the inner wall of the circular hole (8). An O-ring (902) adapted to the locking rod (7) is provided in the annular mounting groove (901). The O-ring (902) is made of wear-resistant nitrile rubber and its inner diameter is slightly smaller than the outer diameter of the locking rod (7) to ensure that the seal is always maintained during the extension and retraction process.

7. A silent washing shaft according to claim 1, characterized in that, The retractable connecting assembly (12) includes an outer rectangular sleeve (1201) fixedly connected to the top of the vertical rod (4). The top of the outer rectangular sleeve (1201) is open, and an inner rectangular sleeve (1202) is slidably connected inside. The bottom of the inner rectangular sleeve (1202) is open. A second spring (1203) is fixedly connected to the inner top of the inner rectangular sleeve (1202), and the bottom end of the second spring (1203) is fixedly connected to the inner bottom of the outer rectangular sleeve (1201).

8. A silent washing shaft according to claim 7, characterized in that, The four side walls of the outer rectangular sleeve (1201) are provided with limiting grooves (24), and the four outer sides of the inner rectangular sleeve (1202) are fixedly connected with limiting slide rods (25) that are adapted to the limiting grooves (24). The four limiting slide rods (25) move longitudinally in the four limiting grooves (24).

Images