Clutch structure and small-sized impeller full-automatic washing machine based on clutch structure

Abstract

The utility model relates to a clutch structure which comprises a clutch shell, a ball bearing is fixedly embedded in the center of the top wall of the clutch shell, a dewatering shaft is vertically and rotatably connected in the ball bearing, an impeller shaft is rotatably arranged in the dewatering shaft, and a meshing wheel is axially and fixedly connected to the lower portion of the impeller shaft in a sleeved mode. The outer diameter of the meshing wheel is the same as that of the bottom of the dewatering shaft, and the meshing wheel and the dewatering shaft are in clearance fit; the outer wall of the bottom of the dewatering shaft and the outer wall of the top of the meshing wheel are axially and oppositely provided with at least one set of first linear sliding groove and second linear sliding groove which are the same in size respectively, the first linear sliding groove of the dewatering shaft is axially and slidably sleeved with a sliding wheel in a matched mode, and a micromotor telescopic mechanism is longitudinally arranged on one side of the inner bottom wall of the clutch shell. A rotation stopping rib is arranged on the inner top wall of the clutch shell, and a spring is arranged between the ball bearing and the sliding wheel. The utility model further provides a small-sized pulsator full-automatic washing machine which comprises the clutch structure. The utility model has the advantages of simple and reliable structure, low cost and small volume, and is more suitable for small-sized pulsator full-automatic washing machines.

Description

Technical Field

[0001] The utility model belongs to the technical field of pulsator washing machines, and particularly relates to a clutch structure and a small pulsator fully automatic washing machine based on the structure. Background Art

[0002] The existing pulsator fully automatic washing machine adopts a tub structure, the water tub is suspended on the box body through a shock-absorbing assembly, and a clutch is installed at the bottom of the water tub. The function of the clutch is to switch the washing and dehydration states of the washing machine. There are two output shafts of the clutch (one dehydration shaft and one pulsator shaft), and the dehydration shaft and the pulsator shaft are concentrically sleeved together. The output end of the dehydration shaft is connected to the dehydration tub, and the output end of the pulsator shaft is connected to the pulsator. The other ends of the dehydration shaft and the pulsator shaft are connected by a clutch sleeve and a clutch spring. When the clutch spring is in the open state, the pulsator shaft and the dehydration shaft are separated, and the rotation of the pulsator shaft will not drive the dehydration shaft to rotate. When the clutch spring is in the closed state, the pulsator shaft and the dehydration shaft are connected together through the clutch spring, and when the pulsator shaft rotates, the dehydration shaft will also rotate at the same time.

[0003] During washing, the clutch spring is in the open state, the washing shaft and the dehydration shaft are separated, the motor drives the impeller shaft to rotate, the impeller shaft drives the impeller to rotate, and the impeller rotates and stirs the washed clothes. In order to prevent the dehydration barrel from rotating during washing, the existing clutch is also provided with a brake device and a one-way bearing on the dehydration shaft.

[0004] During dehydration, the traction device drives the clutch spring to be in a closed state, and the impeller shaft and the dehydration shaft are connected together. At this time, the rotation of the impeller shaft will drive the dehydration shaft to rotate at the same time, and the dehydration barrel and the impeller will also rotate at the same time to start dehydration.

[0005] The clutch of the existing pulsator fully automatic washing machine is used in large washing machines, and there is no clutch specifically used for small pulsator fully automatic washing machines. At present, small washing machines use the clutch structure of large washing machines, but the disadvantages of this clutch are: large size, complex structure and high cost. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a clutch structure and a small pulsator fully automatic washing machine based on the structure. The specific technical solution is as follows:

[0007] The utility model provides a clutch structure, comprising a clutch housing, a ball bearing is fixedly embedded at the center of the top wall of the clutch housing, a dehydration shaft is vertically rotatably connected in the ball bearing, a pulsator shaft is rotatably arranged in the dehydration shaft, a meshing wheel is axially fixedly sleeved at the lower part of the pulsator shaft; the outer diameter of the meshing wheel is the same as the outer diameter of the bottom of the dehydration shaft, and the two are gap-fitted; at least one group of linear slide grooves 1 and 2 of the same size are axially arranged on the outer wall of the bottom of the dehydration shaft and the outer wall of the top of the meshing wheel respectively, a sliding wheel is axially slidably sleeved on the linear slide groove 1 of the dehydration shaft, a micro-motor telescopic mechanism is longitudinally arranged on one side of the inner bottom wall of the clutch housing, a rotation-stopping rib is arranged on the inner top wall of the clutch housing, and a spring is arranged between the ball bearing and the sliding wheel;

[0008] The clutch structure is divided into a washing state and a dehydration state. When in the washing state, the micromotor telescopic mechanism extends to push the sliding wheel to compress the spring and move upward until the upper edge of the sliding wheel is inserted into the anti-rotation rib, and the sliding wheel is separated from the meshing wheel; when in the dehydration state, the micromotor telescopic mechanism retracts and resets, and the spring pushes the sliding wheel to move downward along the linear slide groove 1 and the linear slide groove 2 until the upper edge of the sliding wheel is separated from the anti-rotation rib, and the lower edge of the sliding wheel is bridged with the dehydration shaft and the meshing wheel.

[0009] As an optimal technical solution of the utility model, a plurality of upper latching teeth are evenly distributed circumferentially on the upper edge of the sliding wheel, and the upper latching teeth are in gap engagement with the corresponding inner grooves of the anti-rotation rib; a plurality of lower latching teeth are evenly distributed circumferentially on the inner wall of the lower edge of the sliding wheel, and the lower latching teeth are in sliding engagement with the corresponding linear slide groove 1, and the number of linear slide grooves 1 and 2 is the same, and they are arranged one-to-one.

[0010] As a preferred technical solution of the utility model, the length of the linear slide groove 1 is greater than the length of the linear slide groove 2.

[0011] The utility model also provides a small-sized pulsator fully automatic washing machine, comprising the clutch structure as described above; the washing machine also comprises a box body, a water tub is axially sleeved in the box body, the water tub is suspended with the inner wall of the box body through a shock-absorbing assembly radially symmetrically arranged on its outer peripheral wall, a dewatering barrel is axially sleeved in the water tub, a washing pulsator is axially arranged on the bottom of the dewatering barrel, the washing pulsator and the dewatering barrel are respectively rotatably supported and connected by the pulsator shaft and the dewatering shaft axially arranged at the center of the bottom wall of the water tub; the bottom end of the pulsator shaft passes through the outer side of the bottom wall of the clutch housing, and is axially fixedly sleeved with a pulley; a motor is installed on one side of the bottom surface of the water tub, the power output end of the motor is axially connected with a motor pulley, and the motor pulley and the pulley are radially connected through a transmission belt.

[0012] As an optimal technical solution of the utility model, oil-containing bearings are symmetrically embedded in the upper and lower ends of the dehydration shaft, and the impeller shaft is vertically rotatably connected in the two oil-containing bearings; a impeller shaft water seal is arranged on the top of the upper oil-containing bearing.

[0013] As a preferred technical solution of the utility model, a dehydration shaft water seal is arranged on the top of the ball bearing; and a sealing gasket is arranged at the contact point between the bottom edge of the central opening of the inner wall of the water storage tub and the clutch housing.

[0014] As an optimal technical solution of the utility model, the top of the dehydration shaft is connected to the bottom wall of the dehydration barrel by corresponding screws; the clutch housing is composed of an upper and lower housing connected together, and the upper and lower housings are connected to the bottom wall of the water storage barrel by corresponding screws after being combined.

[0015] The beneficial effects of the utility model are:

[0016] The utility model utilizes the sliding wheel to move up and down to switch the washing and dehydration states of the washing machine. The sliding wheel always slides on the dehydration shaft, and has a simple structure, reliability, low cost and small size. In the washing state, the sliding wheel moves up and engages with the anti-rotation rib of the clutch housing, so that the dehydration shaft cannot rotate, and therefore the dehydration barrel will not rotate with it. The existing clutch structure relies on the friction of the one-way bearing and the brake belt to prevent the dehydration barrel from rotating with it, and the structure is complex and the dehydration barrel has a certain rotation angle. In the dehydration state, the sliding wheel moves down and enters the linear slide groove 2 of the meshing wheel, and the dehydration shaft and the impeller shaft are connected together. The impeller shaft and the dehydration shaft rotate simultaneously to enter the dehydration state. The existing clutch structure connects the impeller shaft and the dehydration shaft together through the clutch spring, the clutch sleeve, and the ratchet and the pawl. Compared with the existing clutch structure, the utility model has a simple structure, low cost, small size and is more suitable for small impeller fully automatic washing machines. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the clutch structure of the utility model is shown;

[0018] Figure 2 The three-dimensional structure diagram of the sliding wheel in the utility model is shown;

[0019] Figure 3 The cross-sectional structure diagram of the sliding wheel in the utility model is shown;

[0020] Figure 4 The schematic diagram of the structure of the washing machine of the utility model in the washing state is shown;

[0021] Figure 5 The schematic diagram shows the structure of the washing machine of the utility model in the dehydration state.

[0022] As shown in the figure: 1. Box body; 2. Shock-absorbing assembly; 3. Water holding tub; 4. Dehydration tub; 5. Washing impeller; 6. Impeller shaft water seal; 7. Screws; 8. Dehydration shaft; 801. Linear slideway 1; 9. Impeller shaft; 10. Motor; 11. Motor pulley; 12. Transmission belt; 13. Pulley; 14. Engaging wheel; 1401. Linear slideway 2; 15. Micromotor telescopic mechanism; 16. Spring; 17. Sliding wheel; 171. Upper clamping tooth; 172. Lower clamping tooth; 18. Anti-rotation rib; 19. Sealing pad; 20. Ball bearing; 21. Dehydration shaft water seal; 22. Oil-containing bearing; 23. Clutch housing. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0024] Embodiment 1

[0025] In order to solve the technical problems in the background technology, a clutch structure is provided as follows:

[0026] Combination Figure 1 , Figure 4 and Figure 5 As shown, a clutch structure comprises a clutch housing 23, a ball bearing 20 is fixedly embedded at the center of the top wall of the clutch housing 23, a dehydration shaft 8 is vertically rotatably connected in the ball bearing 20, a pulsator shaft 9 is rotatably arranged in the dehydration shaft 8, a meshing wheel 14 is axially fixedly sleeved at the lower part of the pulsator shaft 9; the outer diameter of the meshing wheel 14 is the same as the bottom outer diameter of the dehydration shaft 8, and the two are gap-fitted; at least one group of linear slide grooves 1 801 and linear slide grooves 2 1401 of the same size are axially arranged on the outer wall of the bottom of the dehydration shaft 8 and the outer wall of the top of the meshing wheel 14, respectively, a sliding wheel 17 is axially slidably sleeved on the linear slide groove 1 801 of the dehydration shaft 8, a micro-motor telescopic mechanism 15 is longitudinally arranged on one side of the inner bottom wall of the clutch housing 23, a rotation-stopping rib 18 is arranged on the inner top wall of the clutch housing 23, and a spring 16 is arranged between the ball bearing 20 and the sliding wheel 17;

[0027] The clutch structure is divided into a washing state and a dehydration state. When in the washing state, the micromotor telescopic mechanism 15 extends to push the sliding wheel 17 to compress the spring 16 and move upward until the upper edge of the sliding wheel 17 is inserted into the anti-rotation rib 18, and the sliding wheel 17 is separated from the meshing wheel 14; when in the dehydration state, the micromotor telescopic mechanism 15 retracts and resets, and the spring 16 pushes the sliding wheel 17 to move downward along the linear slide groove 1 801 and the linear slide groove 2 1401 until the upper edge of the sliding wheel 17 is separated from the anti-rotation rib 18, and the lower edge of the sliding wheel 17 is bridged with the dehydration shaft 8 and the meshing wheel 14.

[0028] By adopting the above technical solution, the clutch structure uses the sliding wheel 17 to move up and down to switch the washing and dehydration states of the washing machine. The sliding wheel 17 always slides on the dehydration shaft 8, which has a simple structure, reliability, low cost and small size. In the washing state, the sliding wheel 17 moves up and engages with the anti-rotation rib 18 of the clutch housing 23, so that the dehydration shaft 8 cannot rotate, so the dehydration barrel 4 will not rotate with it. The existing clutch structure relies on the friction of the one-way bearing and the brake belt to prevent the dehydration barrel from rotating with it, and the structure is complex and the dehydration barrel 4 has a certain rotation angle. In the dehydration state, the sliding wheel 17 moves down into the linear slide groove 2 1401 of the meshing wheel 14, and the dehydration shaft 8 and the impeller shaft 9 are connected together. The impeller shaft 9 and the dehydration shaft 8 rotate simultaneously to enter the dehydration state. The existing clutch structure connects the impeller shaft and the dehydration shaft together through the clutch spring, the clutch sleeve, and the ratchet and the pawl. Compared with the existing clutch structure, the clutch structure is simple, low-cost, small in size and more suitable for small impeller automatic washing machines.

[0029] Preferably, the micro-motor telescopic mechanism 15 can be a micro-reciprocating telescopic motor, or a telescopic mechanism composed of a micro-stepping motor, a guide rail, a gear, and a rack.

[0030] Embodiment 2

[0031] Combination Figure 1-3 As shown, based on the above embodiment, this embodiment further provides the following contents:

[0032] In this embodiment, if Figure 2 and Figure 3 As shown, a plurality of upper latching teeth 1701 are evenly distributed circumferentially on the upper edge of the sliding wheel 17, and the upper latching teeth 1701 are gap-engaged with the corresponding inner grooves of the anti-rotation rib 18; a plurality of lower latching teeth 1702 are evenly distributed circumferentially on the inner wall of the lower edge of the sliding wheel 17, and the lower latching teeth 1702 are slidingly engaged with the corresponding linear slide groove 1 801, and the number of the linear slide groove 1 801 and the linear slide groove 2 1401 are the same, and are arranged one-to-one.

[0033] By adopting the above technical solution, the upper latching teeth 1701 are matched with the anti-rotation rib 18, and multiple upper latching teeth 1701 are easy to mesh, and the strength will be increased; the lower latching teeth 1702 are matched with the meshing wheel 14, and multiple lower latching teeth 1702 are easy to mesh, and the meshing strength will be better. If there is only one lower latching tooth 1702, the sliding wheel 17 cannot be matched with the second linear slide groove of the meshing wheel 14 when moving downward, and it can only be matched after turning one circle; if the number of lower latching teeth 1702 is 12, it only needs to be rotated 30° to match.

[0034] like Figure 1 As shown, the length of the linear slide groove 1 801 is greater than the length of the linear slide groove 2 1401 .

[0035] By adopting the above technical solution, in the dehydration state, the sliding wheel 17 can be pushed by the spring 16 and directly moved down to the bottom end of the linear slide groove 1401 to engage in place, and at the same time it will not separate from the linear slide groove 801. It is convenient and can ensure the synchronous rotation of the dehydration shaft 8 and the impeller shaft 9.

[0036] Embodiment 3

[0037] Combination Figure 1 , Figure 4 and Figure 5 As shown, based on the above embodiment, this embodiment further provides the following small pulsator fully automatic washing machine:

[0038] In the present embodiment, a small-sized pulsator fully automatic washing machine comprises the clutch structure as described in the first and second embodiments; the washing machine further comprises a housing 1, a water tub 3 is axially sleeved in the housing 1, the water tub 3 is suspended with the inner wall of the housing 1 through a shock absorbing assembly 2 radially symmetrically arranged on its outer peripheral wall, a dewatering barrel 4 is axially sleeved in the water tub 3, a washing pulsator 5 is axially arranged on the bottom of the dewatering barrel 4, the washing pulsator 5 and the dewatering barrel 4 are rotatably supported and connected respectively by the pulsator shaft 9 and the dewatering shaft 8 axially arranged at the center of the bottom wall of the water tub 3; the bottom end of the pulsator shaft 9 passes through the outer side of the bottom wall of the clutch housing 23, and a pulley 13 is axially fixedly sleeved; a motor 10 is installed on one side of the bottom surface of the water tub 3, a motor pulley 11 is axially connected to the power output end of the motor 10, and the motor pulley 11 and the pulley 13 are radially connected through a transmission belt 12.

[0039] By adopting the above technical solution, the clutch structure can be better integrated into a small-sized pulsator fully automatic washing machine; the motor 10 is provided to drive the motor pulley 11 to rotate, and the motor pulley 11 drives the pulley 13 to rotate through the transmission belt 12, and the pulsator shaft 9 rotates synchronously with the pulley 13. In the dehydration state, the sliding wheel 17 moves down and engages with the meshing wheel 14, and then both the dehydration shaft 8 and the pulsator shaft 9 rotate synchronously with the pulley 13. The damping assembly 2 provided is of conventional design, and the structure is not described here. Preferably, the diameter of the pulley 13 is larger than the diameter of the motor pulley 11.

[0040] Preferably, if Figure 4 and Figure 5 As shown, oil-containing bearings 22 are symmetrically embedded in the upper and lower ends of the dehydration shaft 8, and the impeller shaft 9 is vertically rotatably connected in the two oil-containing bearings 22; a impeller shaft water seal 6 is provided on the top of the upper oil-containing bearing 22.

[0041] By adopting the above technical solution, the oil-containing bearing 22 is set to facilitate the rotation of the impeller shaft 9 in the dehydration shaft 8; the impeller shaft water seal 6 can prevent the water flow in the dehydration barrel 4 from entering the dehydration shaft 8 and affecting the service life of the oil-containing bearing 22.

[0042] Preferably, if Figure 4 and Figure 5 As shown, a dehydration shaft water seal 21 is arranged at the top of the ball bearing 20; a sealing gasket 19 is arranged at the contact point between the bottom edge of the central opening of the inner wall of the water storage tub 3 and the clutch housing 23.

[0043] By adopting the above technical solution, the dehydration shaft water seal 21 can prevent the water in the water tub 3 from entering the ball bearing 20 and affecting its service life; the sealing gasket 19 can prevent the water in the water tub 3 from overflowing to the outside.

[0044] Preferably, if Figure 4 and Figure 5 As shown, the top of the dehydration shaft 8 is connected to the bottom wall of the dehydration barrel 4 by corresponding screws 7; the clutch housing 23 is composed of an upper and lower housing connected together, and the upper and lower housings are connected to the bottom wall of the water storage barrel 3 by corresponding screws 7 after the upper and lower housings are combined.

[0045] By adopting the above technical solution, the provided screws 7 facilitate the disassembly and assembly and fixation between the entire clutch structure and the water storage tub 3 and the dewatering tub 4; the clutch housing 23 is composed of an upper and lower housing connected to each other, which is convenient for disassembly and assembly and maintenance of the internal parts of the clutch structure.

[0046] The working principle and use process of this utility model:

[0047] Washing state switching: First, the micromotor telescopic mechanism 15 rises and pushes the sliding wheel 17 to slide upward, and the sliding wheel 17 is separated from the meshing wheel 14. The sliding wheel 17 continues to move upward and its upper edge is inserted into the anti-rotation rib 18 of the clutch housing, which completes the switching of the washing state. The dehydration shaft 8 is connected to the anti-rotation rib 18 of the clutch housing through the sliding wheel 17, and the dehydration shaft 8 is restricted from rotating. When the impeller shaft 9 rotates for washing, the dehydration shaft 8 will not rotate. Compared with the existing technical solution, this technical solution omits the clutch spring, clutch sleeve, one-way bearing, brake belt, brake arm, ratchet, pawl and other parts, and has the advantages of small size, low cost, simple and reliable structure, etc.

[0048] Dehydration state switching: First, the micro-motor telescopic mechanism 15 retracts, and the sliding wheel 17 moves down along the linear slide groove 1 801 of the dehydration shaft 8 under the thrust of the spring 16, and the sliding wheel 17 separates from the anti-rotation rib 18 of the clutch housing, and the sliding wheel 17 continues to move down and finally slides into the linear slide groove 2 1401 of the meshing wheel 14, and the micro-motor telescopic mechanism 15 and the sliding wheel 17 separate, and the dehydration shaft 8 is connected to the meshing wheel 14 through the sliding wheel 17, and the dehydration state switching is completed at this time. The motor 10 drives the motor pulley 11 to rotate, and the motor pulley 11 drives the pulley 13 to rotate through the transmission belt 12, and the dehydration shaft 8 drives the dehydration barrel 4 to rotate, and dehydration begins.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A clutch structure, comprising a clutch housing (23), characterized in that: A ball bearing (20) is fixedly embedded at the center of the top wall of the clutch housing (23); a dehydration shaft (8) is vertically rotatably connected in the ball bearing (20); a pulsator shaft (9) is rotatably arranged in the dehydration shaft (8); a meshing wheel (14) is axially fixedly sleeved at the lower part of the pulsator shaft (9); the outer diameter of the meshing wheel (14) is the same as the outer diameter of the bottom of the dehydration shaft (8), and the two are in close contact with each other with a gap; the outer wall of the bottom of the dehydration shaft (8) and the outer wall of the top of the meshing wheel (14) are separated by a circle. At least one set of linear slide grooves 1 (801) and 2 (1401) of the same size are axially arranged opposite to each other, a sliding wheel (17) is axially slidably sleeved on the linear slide groove 1 (801) of the dehydration shaft (8), a micro-motor telescopic mechanism (15) is longitudinally arranged on one side of the inner bottom wall of the clutch housing (23), a rotation-stopping rib (18) is arranged on the inner top wall of the clutch housing (23), and a spring (16) is arranged between the ball bearing (20) and the sliding wheel (17); The clutch structure is divided into a washing state and a dehydration state. In the washing state, the micro-motor telescopic mechanism (15) extends to push the sliding wheel (17) to compress the spring (16) and move upward until the upper edge of the sliding wheel (17) is inserted into the anti-rotation rib (18), and the sliding wheel (17) is separated from the meshing wheel (14); in the dehydration state, the micro-motor telescopic mechanism (15) retracts and resets, and the spring (16) pushes the sliding wheel (17) to move downward along the linear slide groove 1 (801) and the linear slide groove 2 (1401), until the upper edge of the sliding wheel (17) is separated from the anti-rotation rib (18), the lower edge of the sliding wheel (17) is inserted into the linear slide groove 2 (1401), and the lower edge of the sliding wheel (17) is sleeved with the dehydration shaft (8) and the meshing wheel (14).

2. The clutch structure according to claim 1, characterized in that: The upper edge of the sliding wheel (17) is evenly distributed with a plurality of upper latching teeth (1701) in the circumferential direction, and the upper latching teeth (1701) are in corresponding clearance snap-fitting engagement with the inner notch of the anti-rotation rib (18); the inner wall of the lower edge of the sliding wheel (17) is evenly distributed with a plurality of lower latching teeth (1702) in the circumferential direction, and the lower latching teeth (1702) are in corresponding sliding snap-fitting engagement with the linear slide groove 1 (801), and the linear slide groove 1 (801) and the linear slide groove 2 (1401) are the same in number and are arranged in one-to-one correspondence.

3. The clutch structure according to claim 2, characterized in that: The length of the linear slide groove 1 (801) is greater than the length of the linear slide groove 2 (1401).

4. A small pulsator fully automatic washing machine, characterized in that: The invention comprises a clutch structure as claimed in any one of claims 1 to 3; the washing machine also comprises a housing (1), a water tub (3) is axially sleeved in the housing (1), the water tub (3) is suspended with the inner wall of the housing (1) through a shock absorbing assembly (2) radially symmetrically arranged on its outer peripheral wall, a dehydration barrel (4) is axially sleeved in the water tub (3), a washing impeller (5) is axially arranged at the bottom of the dehydration barrel (4), the washing impeller (5) and the dehydration barrel (4) are respectively connected by axially arranged The impeller shaft (9) and the dehydration shaft (8) at the center of the bottom wall of the water holding tub (3) are rotatably supported and connected; the bottom end of the impeller shaft (9) passes through the outer side of the bottom wall of the clutch housing (23) and is axially fixedly sleeved with a belt pulley (13); a motor (10) is installed on one side of the bottom surface of the water holding tub (3); the power output end of the motor (10) is axially connected to a motor pulley (11), and the motor pulley (11) and the belt pulley (13) are radially connected through a transmission belt (12).

5. A small pulsator fully automatic washing machine according to claim 4, characterized in that: The upper and lower ends of the dehydration shaft (8) are symmetrically embedded with oil-containing bearings (22), and the impeller shaft (9) is vertically rotatably connected in the two oil-containing bearings (22); and the impeller shaft water seal (6) is arranged at the top of the upper oil-containing bearing (22).

6. A small pulsator fully automatic washing machine according to claim 4, characterized in that: A dehydration shaft water seal (21) is arranged at the top of the ball bearing (20); and a sealing gasket (19) is arranged at the contact point between the bottom edge of the central opening of the inner wall of the water storage tub (3) and the clutch housing (23).

7. A small pulsator fully automatic washing machine according to claim 4, characterized in that: The top of the dehydration shaft (8) is connected to the bottom wall of the dehydration barrel (4) via corresponding screws (7); the clutch housing (23) is composed of an upper and lower housing connected together, and the upper and lower housings are connected to the bottom wall of the water storage barrel (3) via corresponding screws (7) after the upper and lower housings are combined.

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