A washing machine of the agitator type

Abstract

This invention discloses a washing machine for rubbing and washing, including a base (1) and a motor (5). The base (1) is provided with an outer tub (2), a top cover (3), and a tub cover (4). The outer tub (2) is provided with an outer tub (27) and a spin-drying rotating inner tub (6). The spin-drying rotating inner tub (6) is provided with a rubbing chamber (7). A V-shaped conveyor belt (8) is provided in the rubbing chamber (7). The front end edge (10) and the rear end edge (11) of the conveyor belt (8) are respectively provided on the front side wall (9) and the rear side wall (12). The conveyor belt (8) slides back and forth on the front side wall (9) or the rear side wall (12). The two sides of the conveyor belt (8) slide in contact with the side wall (13) of the rubbing chamber. The spin-drying rotating inner tub (6) is provided with a symmetrical front stretching mechanism and a rear stretching mechanism, which are fixedly connected to both ends of the conveyor belt (8). The front stretching mechanism and the rear stretching mechanism are respectively connected to the control circuit board. This invention provides excellent scrubbing results while saving water and time.

Description

Technical Field

[0001] This invention belongs to the field of household appliances, and in particular relates to a washing machine with a scrubbing function. Background Technology

[0002] Existing corrugated washing machines require a motor to rotate the water throughout the machine via a corrugated disc, creating friction and rubbing between the clothes and water. This requires high power, resulting in low washing and rubbing efficiency and high energy consumption. Furthermore, the washing machine needs to gradually accelerate to move the water, which is inefficient in terms of time and causes energy loss due to constantly changing the water flow direction, resulting in weak overall washing power. Importantly, agitating a tub of water causes significant wear and tear on the machine body and motor. A drawback of front-loading washing machines is the significant abrasion they cause to clothes because, during the washing cycle, the clothes are essentially above the water surface, losing the water's lubrication, and resulting in direct friction between the fabric surfaces. This has led to the development of a new washing method: the rubbing method, which offers better washing results, such as dual-power rubbing. Dual-power rubbing increases the rubbing force between the clothes and water, resulting in superior washing performance with minimal structural changes. Chinese patent application number 96225245.X discloses a simple column-type washing machine. It designs the corrugated disc as a tower shape based on a regular corrugated washing machine, using rubber towers to scrub clothes against the drum wall. This washing method is effective, but it easily causes clothes to tangle and tear. Chinese patent application number 95217456.1 discloses a cylindrical corrugated disc, with the same issue. Chinese patent application number 201620248256.9, based on existing corrugated washing machines, adds numerous protruding small rollers to the vertical wall of the drum. As the clothes rotate in the water, they contact these rollers, which intensify the scrubbing. While this prevents clothes from tangling, the scrubbing power and effectiveness are not as good, and each wash requires a large amount of water and takes a long time. Summary of the Invention

[0003] In order to address the shortcomings of existing washing machines, such as insufficient washing force, high water consumption, and long washing time, the present invention aims to provide a washing machine that uses a conveyor belt to simulate tumbling of clothes.

[0004] The technical solution adopted to achieve the purpose of this invention is as follows:

[0005] A washing machine with a rubbing function includes a base and a motor. An outer tub and a top cover are fixed to the base. A tub cover is provided on the top cover. A water-resistant outer tub is provided inside the outer tub and is fixed to the motor. A spin-drying inner tub is fixed inside the outer tub. A control circuit board and control buttons are also provided. The washing machine is characterized by a rubbing chamber inside the spin-drying inner tub, and a U-shaped or V-shaped conveyor belt inside the rubbing chamber. The front end of the conveyor belt is located on the front side wall of the rubbing chamber, the rear end is located on the rear side wall of the rubbing chamber, and the middle part of the conveyor belt is located on the rubbing chamber. The bottom of the kneading chamber; the front and rear sidewalls are symmetrically arranged facing each other within the kneading chamber, and the front and rear sidewalls are U-shaped or V-shaped. The conveyor belt slides back and forth on the front or rear sidewalls; the two sides of the conveyor belt slide in contact with the sidewalls of the kneading chamber, and the sidewalls of the kneading chamber on both sides serve as baffles for the two sides of the conveyor belt; symmetrical front stretching mechanisms and rear stretching mechanisms are provided on the spin-drying rotating inner drum, which are respectively fixedly connected to the front and rear sides of the conveyor belt for pulling the conveyor belt forward or backward; the front stretching mechanism and the rear stretching mechanism are respectively connected to the control circuit board.

[0006] The kneading chamber has symmetrical side walls on both sides; a group of pressure rollers is provided in the lower part of the center line of the side wall of each kneading chamber, and the axis of the pressure rollers is perpendicular to the side wall of the kneading chamber. When the conveyor belt is pulled back and forth, the wheel surface of the pressure rollers presses against the two sides of the conveyor belt; the line connecting the axes of each group of pressure rollers is arc-shaped; a clothing isolation cover is provided outside the group of pressure rollers, and the clothing isolation cover is fixed on the side wall of the kneading chamber.

[0007] Two proximity switches are provided at the upper middle part of the spin-drying inner drum to indicate the height of the front and rear edges of the conveyor belt. The two proximity switches are symmetrically arranged on the spin-drying inner drum and are at the same horizontal height, respectively making intermittent contact with the front and rear edges of the conveyor belt. The proximity switches are connected to the control circuit board.

[0008] Both the front stretching mechanism and the rear stretching mechanism include a set of motors and gear sets; the output wheel or output shaft of the gear set is connected or fixed to a stranded wire reel, and the stranded wire reel is fixedly connected to the front or rear edge of the conveyor belt via a wire drawing line; the control lines of the motors are respectively connected to the control circuit board.

[0009] At the top of the spin-drying inner drum and below the top cover, two sets of roller contacts for the control lines of the motors or proximity switches are symmetrically arranged, and the roller contacts are fixed on columnar springs; corresponding annular metal slides are provided on the lower surface of the top cover, and one roller contact contacts one corresponding metal slide; the control circuits of the two motors output in opposite directions, or the twisted coils of the two motors rotate in opposite directions.

[0010] Alternatively, several intermediate wire-drawing rollers and guide rollers of the conveyor belt are respectively provided at the top of the front or rear side wall. The conveyor belt turns to its rear via the guide rollers, and the wire-drawing rollers turn to its rear via the intermediate wire-drawing rollers. The guide rollers are higher than the intermediate wire-drawing rollers. The proximity switches are respectively provided on the back of the front or rear side wall. A guide sleeve for the wire-drawing rollers is fixed below the proximity switches. The lower end of the guide sleeve is connected to the stranded reel of the motor at the outer bottom of the outer barrel through an external waterproof pipe. The lower end of the wire-drawing rollers is connected to the stranded reel. The motor is fixed to the outer bottom of the outer barrel. Baffles are provided on both sides of the conveyor belt. The components of the front or rear side wall are symmetrically arranged.

[0011] The horizontal drop between the front and rear edges of the conveyor belt is 20-50 cm, preferably 25-40 cm; the lowest point of the front or rear edge is higher than the maximum liquid level during washing; the line connecting the front sidewall, the rear sidewall, and the roller surface is V-shaped and smoothly connected; the angle between the front and rear sidewalls of the conveyor belt is 0-120 degrees, preferably 5-50 degrees; each group of rollers has at least 3 rollers evenly distributed, preferably five; the axial width of each roller surface is 1 / 12-1 / 4 of the width of the conveyor belt.

[0012] A set of sliding rods is fixedly installed in the longitudinal grooves on the front and rear sidewalls of the kneading chamber. The set of sliding rods includes two parallel sliding rods on the left and right, and the axis of the sliding rods is parallel to the movement direction of the conveyor belt. Two sliding sleeves are respectively provided on the front or rear edge of the conveyor belt, and each sliding sleeve is fitted onto a sliding rod. The drawing wire is fixed in the middle of the front or rear edge, and there is a sliding sleeve on each side of the drawing wire. The bottom contour of the kneading chamber is rectangular. A tensioning fine-tuning screw is connected in series on each drawing wire. Alternatively, each set of pressure rollers can be used as a pressure roller group, and the pressure roller group is fixed to the sidewall of the kneading chamber by several lifting columns. Several cylindrical protrusions are provided at the upper end of the pressure roller group. The pressure sleeve at the upper end of the lifting column is fixed to the sidewall. A cylindrical spring is provided inside the pressure sleeve. The upper middle end of the protrusion is fitted inside the pressure sleeve, and the protrusion rests on the lower end of the cylindrical spring.

[0013] On the front and rear sidewalls of the kneading chamber, several rows of pulleys are evenly arranged along the direction of movement of the conveyor belt, with several pulleys in each row; when the conveyor belt is pulled back and forth, the lower surface of the conveyor belt rolls on the pulleys; several horizontally placed raised kneading ribs are provided on the conveyor belt, and are only provided in the middle of the transverse direction of the conveyor belt, with the surfaces on both sides of the conveyor belt in direct contact with the pressure rollers; the sidewalls of each kneading chamber have flat surfaces that slide in contact with the sides of the conveyor belt, but the upper middle part of the sidewalls of the kneading chambers is concave inward; several spin-drying water outlets are provided in the concave areas of the sidewalls of the kneading chambers on both sides, and several spin-drying water outlets are also provided on the front and rear sidewalls, and the spin-drying water outlets are connected to the outer tub of the washing machine.

[0014] The rectangular upper opening of the kneading chamber has a length-to-width ratio of 1:(0.6-1). The front and rear sidewalls are positioned downwards and inwards along the long side. The distance between the two sides of the conveyor belt and the sidewalls of the kneading chamber is a clearance fit, as is the distance between the clothing isolation cover and the conveyor belt. The protrusion height of the kneading ribs is 0.4-4 cm, preferably 1-2.5 cm. The distance between the front and rear kneading ribs is 5-15 cm, preferably 6-10 cm. Several horizontally placed long fixed steel strips are provided on the back of the conveyor belt. The kneading ribs have threads, and several screws are screwed onto the long fixed steel strips, fixing the kneading ribs to the conveyor belt. The pulley passes between two of the long fixed steel strips. Alternatively, the kneading ribs and the conveyor belt can be integrated, bonded, or riveted.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. The conveyor belt simulates washing by moving back and forth in a V-shape. The rubbing ribs on the conveyor belt drive the water flow, causing the clothes to roll in the water and form a washing effect. The clothes start rolling on one side of the conveyor belt, move to the other side, then down to the bottom, then up again, and then back to the starting point, repeating the cycle. This method provides a good washing effect.

[0017] 2. This tumbling washing method, whether using laundry detergent or rinsing, does not require moving the water in the entire drum like a corrugated washing machine. Therefore, it requires a smaller motor and consumes less electricity. With the same motor power, it has a stronger washing motion, resulting in more thorough washing and higher efficiency.

[0018] 3. Minimal wear and tear on the washing machine body and motor.

[0019] 4. The use of conveyor belts made of rubber cloth curtains ensures reliable, stable and durable performance.

[0020] 5. Cleans more thoroughly.

[0021] 6. The washing chamber is small in size, saving water and reducing the time required for each water filling, thus saving washing time.

[0022] 7. The structure is not complex, it is easy to manufacture, and it achieves good functional performance.

[0023] 8. Because the clothes are basically in water during the washing process, it causes less wear and tear on the clothes compared to a front-loading washing machine.

[0024] 9. Reduces the problem of clothes tangling during washing.

[0025] 10. The tumbling and washing area of ​​clothes is wider compared to a front-loading washing machine. Attached Figure Description

[0026] Figure 1 This is an overall cross-sectional schematic diagram of an embodiment of the present invention;

[0027] Figure 2 This is a cross-sectional schematic diagram of the outer casing according to an embodiment of the present invention;

[0028] Figure 3 yes Figure 2 A top view diagram taken from the AA section downwards;

[0029] Figure 4 This is a schematic diagram of the pressure roller according to an embodiment of the present invention;

[0030] Figure 5 This is a front view schematic diagram of the front sidewall of an embodiment of the present invention;

[0031] Figure 6 This is a cross-sectional schematic diagram of the kneading tendon according to an embodiment of the present invention;

[0032] Figure 7 This is a longitudinal cross-sectional schematic diagram of the kneading tendon according to an embodiment of the present invention;

[0033] Figure 8 This is a structural diagram of the long fixed steel strip according to an embodiment of the present invention;

[0034] Figure 9 This is a side view of the overall structure of another embodiment of the present invention;

[0035] Figure 10 This is a structural diagram of the metal slide rail according to an embodiment of the present invention;

[0036] Figure 11 This is a schematic diagram illustrating the working principle of the conveyor belt moving backward according to an embodiment of the present invention;

[0037] Figure 12 This is a schematic diagram illustrating the working principle of the forward movement of the conveyor belt according to an embodiment of the present invention.

[0038] Figure label:

[0039] 1. Base; 2. Outer tub; 3. Top cover; 4. Tub lid; 5. Motor; 6. Spin-drying rotating inner tub; 7. Kneading chamber; 8. Conveyor belt; 9. Front side wall; 10. Front end edge; 11. Rear end edge; 12. Rear side wall; 13. Side wall of the kneading chamber; 14. Pressure roller; 15. Clothing isolation cover; 16. Proximity switch; 17. Motor; 18. Middle wire drawing roller; 19. Twisted wire reel; 20. Wire drawing thread; 21. Roller contact; 22. Columnar spring; 23. Sliding rod; 24. Pulley; 25. Kneading rib; 26. Spin-drying outlet; 27. Outer tub; 28. Sliding sleeve; 29. ​​Lifting column; 30. Cylindrical spring; 31. Inner recess; 32. Metal slide; 33. Long groove; 34. Steering wheel; 35. Protruding column; 36. Steering screw sleeve. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0041] like Figure 1-9 The washing machine shown has the following structure:

[0042] refer to Figure 1 The system includes a base 1, an outer barrel 2 fixedly mounted on the base 1, an upper cover 3 fixedly mounted on the outer barrel 2, and a hinged lid 4 on the upper cover 3. A control circuit board is located inside the upper cover 3, with control buttons on its upper surface. A motor 5, which drives stirring and spin-drying, is fixed to the base 1 and equipped with a shock-absorbing device. The motor 5 is connected to the control circuit board via control lines. Opening the lid 4 stops all circuitry from operating.

[0043] An outer tub 27 is located inside the outer tub 2, and the outer tub 27 is flexibly fixed to the motor 5. A spin-drying inner tub 6 is fixedly located inside the outer tub 27. The outer tub 27 is fixed and does not rotate, but the spin-drying inner tub 6 can rotate within the outer tub 27. The spin-drying inner tub 6 serves as the inner tub for both drying and washing clothes. During the entire washing process, none of the components rotate. Overflow pipes are not shown in the diagrams.

[0044] like Figure 2 , Figure 3 As shown, a kneading chamber 7 is provided inside the spin-drying inner drum 6. The upper opening of the kneading chamber 7 is rectangular, and the ratio of the length of the longer side to the width of the upper opening is 1:(0.6-1). Figure 4 The given shape is square, with a length of 26 cm. A front sidewall 9 and a rear sidewall 12 are positioned downwards and inwards along the long side. On the rotating circumference of the kneading cavity 7, the front sidewalls 9 and rear sidewalls 12 are symmetrically arranged facing each other, appearing as diagonal edges when viewed from the side. The bottom outline of the kneading cavity 7 is also rectangular.

[0045] A U-shaped or V-shaped (preferably V-shaped) conveyor belt 8 is provided inside the kneading chamber 7. The bottom of the conveyor belt 8 (in the figures, it is shown as a paper-like shape in side view) is located at the bottom of the kneading chamber 7. The conveyor belt 8 is a rubber curtain conveyor belt 8, which is soft and durable. The angle between the front side wall 9 and the rear side wall 12 of the conveyor belt 8 is 0-120 degrees, preferably 10-50 degrees, and most preferably 10-30 degrees. If the angle is too large, the opening of the kneading chamber 7 will need to be large, and the diameter of the spin-drying inner tub 6 will also need to be large, resulting in a large product volume, which is impractical. Of course, if the angle is slightly larger, there will be more space for the clothes to roll and move, resulting in better clothes rolling effect. The embodiments given are examples with an angle of 7 degrees. The embodiments shown in the figures are designed based on an inner diameter of 40 cm and a maximum water filling depth of 40 cm. The upper openings on both sides, i.e., the recessed areas 31, have large spaces, which is beneficial for washing.

[0046] exist Figure 2 , Figure 3 , Figure 4 In this process, the front edge 10 of the conveyor belt 8 is laid on the front side wall 9 of the kneading chamber 7, and the rear edge 11 is laid on the rear side wall 12 of the kneading chamber 7. The conveyor belt 8 is pulled back and forth and slides upward on either the front side wall 9 or the rear side wall 12. When the conveyor belt 8 moves, its two sides slide in contact with the side wall 13 of the kneading chamber. On the rotating circumference of the kneading chamber 7, a symmetrical front stretching mechanism and a rear stretching mechanism are fixedly provided on the spin-drying rotating inner drum 6. The front stretching mechanism and the rear stretching mechanism are fixedly connected to the front edge 10 and the rear edge 11 of the conveyor belt 8, respectively, and play the role of pulling the conveyor belt 8 forward or backward. The front stretching mechanism and the rear stretching mechanism are respectively connected to the control circuit board.

[0047] exist Figure 3 , Figure 4 In the rotating circumference of the kneading chamber 7, symmetrical side walls 13 are provided on both sides of the kneading chamber 7, relative to the front side wall 9 and the rear side wall 12. Along the centerline of each side wall 13, a group of pressure rollers 14 are provided in the lower middle part, with the axis of the pressure rollers 14 perpendicular to the side wall 13. When the conveyor belt 8 is pulled back and forth, it is tightened, and its two sides contact and are pressed against the wheel surfaces of the pressure rollers 14. The conveyor belt 8 changes its direction of movement via the pressure rollers 14, ensuring that each segment of the conveyor belt 8 is straightened and tightened when pulled, thus effectively completing the rolling motion of the clothes in the water.

[0048] Each set of pressure rollers 14 on the sidewalls 13 of the two kneading chambers is evenly provided with at least three pressure rollers 14, preferably five or seven. The lines connecting the surfaces of the pressure rollers 14 are V-shaped and smoothly connected. These pressure rollers 14 are connected together by metal brackets and fixed to the sidewalls 13 of the kneading chambers for easy installation. This also ensures that the force is evenly distributed on the plastic casing (kneading chamber 7) of the washing machine, preventing damage to the casing due to excessive force in one place. The lines connecting the axes of each set of pressure rollers 14 are arc-shaped with a smooth change in direction. The arc-shaped lines are smoothly connected to the front sidewall 9 or the rear sidewall 12 to ensure the smooth pulling of the conveyor belt 8.

[0049] A clothing isolation cover 15 is provided outside a set of pressure rollers 14, and the clothing isolation cover 15 is fixed to the side wall by a metal bracket. The distance between the clothing isolation cover 15 and the conveyor belt 8 is a clearance fit. The clothing isolation cover 15 prevents clothes from getting caught in the pressure rollers 14 and the conveyor belt 8 during the washing process, which would cause the clothes to tear. The conveyor belt 8 will then stop. The distance between the two sides of the conveyor belt 8 and the side wall 13 of the kneading chamber is also a clearance fit, ensuring that the conveyor belt 8 moves neither too loosely nor too tightly, and will not pinch the clothes.

[0050] The sidewalls 13 of each kneading chamber have flat surfaces that slide in contact with the sides of the conveyor belt 8. These sidewalls 13 act as baffles on both sides of the conveyor belt 8, providing obstruction. However, the upper middle part of the sidewalls 13 is recessed inwards. Several spin-drying outlets 26 are provided at the recessed areas 31 in the upper middle part of the sidewalls 13 of both kneading chambers, allowing for easy water collection during spinning. Several spin-drying outlets 26 are also provided on the front sidewall 9 and rear sidewall 12, and these outlets are connected to the outer tub 27 of the washing machine. The spin-drying outlets 26 are used for drainage during spinning. The spin-drying outlets 26 are connected to the washing machine's drain pipe via the lower end of the inner tub 6 and the solenoid valve of the outer tub 2. During spinning, both ends of the conveyor belt 8 are at the same horizontal level, facilitating balanced rotation.

[0051] like Figure 1 , Figure 2 As shown, both the front and rear stretching mechanisms include a set of motors 17 and gear sets (located above the washing water surface). The motors 17 are reduced in speed by the gear sets. The output wheel (or output shaft) of the gear set is synchronously connected or fixed to a twisted reel 19 (one twisted reel 19 is provided on each side of the conveyor belt). The twisted reels 19 are then fixedly connected to the front edge 10 or rear edge 11 of the conveyor belt 8 via a drawing wire 20. One motor 17 actively applies force to pull, while the other motor 17 follows in reverse. The control lines of each motor 17 are connected to a control circuit board. The circuits of the two symmetrical pulling motors 17 work synchronously in opposite directions until they contact a proximity switch 16, at which point the direction of movement is adjusted. The control circuits of the two motors 17 or the twisted reels 19 output in opposite directions.

[0052] In the two sets of motors 17 and gear sets, two motors are connected in parallel and rotate in the same direction, while the outputs of the two gear sets are opposite. Alternatively, the two gear sets are identical, but the two motors rotate in opposite directions. Or, the two motors are interlocked, but an electronically controlled clutch is provided at the output end of the gear set, connected to the twisted wire reel 19. When the motor on the other side rotates, it drives the conveyor belt to move to the other side, while the motor on that side remains stationary. The electronically controlled clutch on the same side is released, and the front edge 10 or rear edge 11 of the conveyor belt on that side moves downwards, initiating the washing process. These are all features we need to protect against. The motor is positioned above the water surface to prevent electric leakage, but the motor is waterproof and uses a low-voltage safety voltage, ideally 36V.

[0053] Each pull wire 20 is connected to a tension adjustment screw, which can adjust the tension of the pull wire 20. The conveyor belt 8 will lengthen over time, and the pull wires 20 will loosen, so the tension adjustment screws should be adjusted after the washing machine has been used for a period of time.

[0054] like Figure 4 As shown, a viable long-term solution is to treat each set of pressure rollers 14 as a pressure roller group. Each pressure roller group is fixed to the side wall 13 of the kneading chamber via several lifting columns 29. The upper end of each pressure roller group has three cylindrical protrusions 35. The upper end of each lifting column 29 is fixed to the side wall 13, and a cylindrical spring 30 is installed inside the pressure sleeve. The upper middle end of each protrusion 35 is fitted inside the pressure sleeve, and the protrusion 35 rests against the lower end of the cylindrical spring 30. When the conveyor belt 8 loosens, the cylindrical spring 30 presses down on the protrusions, which in turn press down on the pressure roller group. The pressure roller group moves downward, lifting the conveyor belt 8, and the tension thread 20 regains some tension, eliminating the need for manual adjustment. At this time, the gap between the clothes separator cover 15 and the conveyor belt 8 remains constant, preventing clothes from being pulled or tangled during the entire washing process.

[0055] like Figure 1 , Figure 2 As shown, proximity switches 16 are located in the upper middle part of the spin-drying inner tub 6, indicating the height difference between the front edge 10 and the rear edge 11 of the conveyor belt 8. The two proximity switches 16 are symmetrically arranged on the spin-drying inner tub 6 and are at the same horizontal height. The control lines of the proximity switches 16 are connected to the control circuit board. The horizontal drop between the front edge 10 and the rear edge of the conveyor belt 8 is 20-50 cm, optimized to 25-40 cm. This higher drop ensures a larger tumbling range for the clothes and a longer application time, guaranteeing the best washing effect. However, the drop should not be too large, as this would make the washing machine too tall. Clothes can be removed using clips because the washing machine tub is deeper than that of a regular corrugated washing machine. However, the lowest point of the front edge 10 or the rear edge 11 is higher than the maximum liquid level during washing, ensuring that the conveyor belt 8 does not enter the water and that its two ends do not touch the clothes.

[0056] like Figure 2 , Figure 5As shown, several rows of pulleys 24 are evenly arranged on the front sidewall 9 and rear sidewall 12 of the kneading chamber 7 along the direction of movement of the conveyor belt 8, with each row of pulleys 24 containing several pulleys 24. Two sliding rods 23 are spaced apart from each row of pulleys 24, ensuring they do not interfere with each other. The outer surface of the pulleys 24 protrudes slightly from the front sidewall 9 or rear sidewall 12, preventing the conveyor belt 8 from directly contacting the front sidewall 9 or rear sidewall 12. When the conveyor belt 8 is pulled back and forth, the pulleys 24 roll on the lower surface of the conveyor belt 8, resulting in low frictional resistance.

[0057] like Figure 5 As shown, a set of sliding rods 23 are fixedly installed in the longitudinal grooves on the front sidewall 9 and rear sidewall 12 of the kneading chamber 7. Each set of sliding rods 23 includes two parallel sliding rods 23 on the left and right sides, with the axis of each sliding rod 23 parallel to the direction of movement of the conveyor belt 8. Two sliding sleeves 28 are respectively provided on the front end edge 10 or rear end edge 11 of the conveyor belt 8 (this number can be increased, but is limited by the length of the conveyor belt). Each sliding sleeve 28 is fitted onto one sliding rod 23. A drawstring 20 is fixed to the middle of the front end edge 10 or rear end edge 11, with a sliding sleeve 28 on each side of the drawstring 20. The design of the sliding rods 23 and sliding sleeves 28 ensures that the conveyor belt 8 has a restricted movement trajectory during movement, preventing it from deviating to the left or right, and ensuring that the distance between the conveyor belt 8 and the sidewall 13 of the kneading chamber is neither too large nor too small, thus preventing compression of the clothing.

[0058] like Figure 9As shown, another embodiment of the present invention is as follows: Two intermediate wire-drawing wheels 18, turning towards their rear sides, are respectively provided at the top of the front sidewall 9 or the rear sidewall 12, along with several steering wheels 34 for the conveyor belt 8. The conveyor belt turns towards its rear side via the steering wheels 34, and the wire 20 turns towards its rear side via the intermediate wire-drawing wheels 18. The steering wheels are higher than the intermediate wire-drawing wheels 18 (when the conveyor belt 8 is pulled to the back of the front sidewall 9 or the rear sidewall 12, the conveyor belt 8 is supported by the steering wheels, and the intermediate wire-drawing wheels 18 no longer contact the conveyor belt 8, thus completing the turn of the conveyor belt and ensuring that the conveyor belt 8 can smoothly return to the front of the front sidewall 9 or the rear sidewall 12). Baffles are provided on both sides of the conveyor belt 8 to ensure that the conveyor belt 8 does not deviate during transmission. Proximity switches 16 are respectively provided on the back of the front sidewall 9 or the rear sidewall 12. A steering sleeve 36 for the wire 20 (which is the common bicycle brake cable and can serve a steering function) is fixed below the proximity switches 16. The lower end of the steering thread sleeve 36 is connected via an external waterproof pipe (ensuring that water is not carried outside the outer tub 2 from the steering thread sleeve, and also ensuring that it does not rust and maintains lubrication) to the winding reel 19 of the motor 17 at the outer bottom of the outer tub 2. The lower end of the pull wire 20 is connected to the winding reel 19, and the motor 17 is fixed to the outer bottom of the outer tub 2. Throughout the washing process, the motor, the outer tub 2, and the internal components rotate synchronously without any angular difference. The components of the front sidewall 9 or the rear sidewall 12 are symmetrically arranged to ensure smooth rotation. In this embodiment, there is no sliding rod or sliding sleeve structure.

[0059] like Figure 1 , Figure 2 , Figure 10 As shown, at the top of the spin-drying inner tub 6 and below the top cover, symmetrically arranged are roller contacts 21 for the control lines of two sets of motors 17. Each roller contact 21 is fixed to a columnar spring 22, the lower end of which is fixed to the spin-drying inner tub 6. Corresponding annular metal tracks are provided on the lower surface of the top cover 3, with each roller contact 21 contacting a corresponding metal track. During the spin-drying process, the roller contacts 21 roll under pressure on their corresponding metal tracks, but no current is generated. During the washing process, the roller contacts 21 and metal tracks of the two motors 17 provide power to the two motors 17. Alternatively, the metal tracks can be omitted, and the roller contacts 21 can be electrically controlled to rise and contact the upper metal contacts.

[0060] Proximity switches 16 intermittently contact the front edge 10 and rear edge 11 of the conveyor belt 8, respectively. When one proximity switch 16 receives an disconnect signal, it causes both motors 17 to move simultaneously and in opposite directions. Alternatively, the two motors 17 can be of the same model, but their output gears are reversed, and their circuits interact. This allows the use of only one set of roller contacts 21 and metal rails, including both positive and negative sets of roller contacts 21 and metal rails. After intermittent contact, the conveyor belt 8 stops pulling, and the circuits of the two symmetrical pulling motors 17 operate in opposite directions, causing the conveyor belt 8 to pull in the opposite direction, performing a reciprocating motion.

[0061] Each proximity switch 16 is connected to the control circuit board via a set of roller contacts 21 and a metal rail. It is preferable to connect the two proximity switches 16 directly to the circuits of the two motors 17 without connecting the roller contacts 21 and the metal rail to the control circuit board. However, if precise control of the stopping position and cycle time is required, the proximity switches 16 must be connected to the control circuit board.

[0062] like Figure 3 , Figure 6 , Figure 7 As shown, several horizontally positioned raised kneading ribs 25 are provided on the conveyor belt 8, and they are only provided in the middle of the transverse direction of the conveyor belt 8. The surfaces on both sides of the conveyor belt 8 are in direct contact with the wheel surface of the pressure roller 14, so there are no protrusions there. The height of the raised kneading ribs 25 is 0.4-4 cm, preferably 1-2.5 cm. If the kneading ribs 25 are too high, they will abrade the clothes; if they are too low, the effect will be poor. In contrast, the corrugated disc of a regular corrugated washing machine protrudes 2-3 cm. The distance between two kneading ribs 25 is 5-15 cm, preferably 6-10 cm, which achieves the best effect. If the distance is too wide, the tumbling effect on the clothes will be poor.

[0063] like Figure 6 , Figure 7 , Figure 8 As shown, the back of the conveyor belt 8 has several horizontally placed long fixed steel strips. The ribs 25 have threads, and several screws are screwed onto the long fixed steel strips, thus fixing the ribs 25 to the conveyor belt 8. The pulley 24 passes between any two long fixed steel strips, ensuring that the pulley 24 does not contact any metal parts, preventing wheel abrasion. The ribs 25 can be glued to the conveyor belt; the ribs 25 are rubber products, facilitating adhesion and bending deformation, and promoting the bending of the conveyor belt. Alternatively, the ribs 25 can be integral with the conveyor belt 8, also made of rubber, or riveted. This design makes the conveyor belt 8 components less prone to deformation, sturdy, and durable.

[0064] The axial width of each pressure roller 14 is 1 / 12 to 1 / 4 of the width of the conveyor belt 8, and the total width of the two pressure rollers 14 is 1 / 6 to 1 / 2 (preferably 1 / 4 to 3 / 8) of the width of the conveyor belt 8. The width of the clothing isolation cover 15 is also correspondingly wide. If the pressure roller 14 is too narrow, during the washing process, because the conveyor belt 8 under the pressure roller 14 is subjected to longitudinal tension in the direction of movement and downward pressure from the clothes and water flow, the conveyor belt between the two pressure rollers 14 will be concave downward, and the two sides of the conveyor belt 8 will shift towards the middle. Over time, deformation will occur in the middle of the conveyor belt 8, resulting in quality problems. If the total width of the two pressure rollers 14 is too large, the width of the rubbing ribs 25 between the two pressure rollers 14 will be small, and the thrust generated by the rubbing ribs 25 will be small. The height of the rubbing ribs 25 needs to be increased, which will increase the wear and tear on the clothes. The distance between the two kneading ribs 25 should not be too far, also because the conveyor belt 8 will concave downwards. With the lateral support of the kneading ribs 25, the deformation of the conveyor belt 8 is small. The thickness of the conveyor belt can be increased to reduce deformation.

[0065] In another implementation, the axial width of each pressure roller 14 does not need to be very wide, but a row of side rollers should be provided on each side of the conveyor belt 8, with each row having several independent side rollers. First, a metal groove 33 is provided at corresponding positions on the front sidewall 9 or rear sidewall 12 on both sides of the conveyor belt 8. Each side roller is fixed to the side of the conveyor belt 8 by a strip, and each side roller is fixed to the strip by a bicycle fork-like fork. The side rollers roll within the groove, rolling longitudinally along the groove. The pressure surfaces of the side rollers on both sides press against the sides of the groove, securing both sides of the conveyor belt 8 to the front sidewall 9 or rear sidewall 12, preventing deformation. In this way, the pressure roller 14 is not made too wide, ensuring the width of the kneading rib 25, and the kneading rib 25 does not protrude too high, resulting in less wear.

[0066] In another implementation, each row of side wheels is replaced by a chain, and a coaxial gear is provided on the outer side of each pressure wheel 14. The gear interacts and meshes with the chain, moving with the conveyor belt in the long groove. However, the chain and the conveyor belt remain stationary, only the gear rotates. A long strip-shaped cover is provided on the outside of the chain to cover it. The cover is fixed to the side wall 13 of the kneading chamber to prevent clothes from being pulled or pinched during washing.

[0067] In summary, widening the axial width of each pressure roller's 14-wheel surface is the best choice due to its simple structure, low cost, and ease of manufacturing.

[0068] Working principle, such as Figure 11 , Figure 12 As shown:

[0069] There is no washing drive motor or corrugated disc. When the washing program is set via the control buttons and the machine starts working, the rear motor 17 drives the conveyor belt 8 to move upward and backward. The agitation ribs 25 on the conveyor belt 8 use water flow to move the clothes upward, with the clothes rising and increasing in number, pushing them forward and rolling until they reach the front edge 10 of the conveyor belt 8. Simultaneously, the front motor 17 drives the conveyor belt 8 downward, and the agitation ribs 25 move the clothes downward and roll, then rise again, returning to the starting point. If the rear edge 11 of the conveyor belt 8 touches the proximity switch 16, the conveyor belt 8 stops moving, the two motors 17 change their rotation direction, the conveyor belt 8 moves upward and forward, and the clothes roll in the opposite direction, then backward, reaching the rear edge 11 of the conveyor belt 8. Simultaneously, the rear motor 17 drives the conveyor belt 8 downward, and the agitation ribs 25 move the clothes downward and roll, then rise again, returning to the starting point. When the front edge 10 of the conveyor belt 8 touches the proximity switch 16, the conveyor belt 8 stops moving, the two motors 17 change their rotation direction, and a new workflow begins. The two motors 17 stop when the set time value is reached.

[0070] When spin-drying is required, the two motors 17 move the conveyor belt 8 to the same height at both ends, achieving centrifugal force balance and facilitating rotation, thus initiating the spin-drying process. The inner drum 6 is driven by a motor 5, which rotates it for spin-drying. After spin-drying, water is added for rinsing. The rinsing process is similar to washing with detergent. Because the kneading chamber 7 has a small space and requires less water, an additional rinse is added, normally requiring three to four rinses. However, each rinse session is shorter.

[0071] The conveyor belt 8 has two speed settings: strong and weak, and its conveying height also has two settings: high and low, which can meet different washing requirements. The number of washes and the amount of water added can also be set.

[0072] In another embodiment, the upper end of the plate wall (which is a rotatable plate wall) of the front side wall 9 or the rear side wall 12 is hinged to the inner drum 6 for spin-drying, and the inner surface of the lower end is in contact with a cam pressing mechanism. During normal washing, the cam pressing mechanism pushes the front side wall 9 or the rear side wall 12 inward and locks it with ratchet to prevent the plate wall from rotating. When the clothes are spin-drying, the ratchet is disengaged, the cam pressing mechanism retracts, the two ends of the conveyor belt 8 are released, and the two ends are at the same horizontal level. The lower middle part of the conveyor belt 8 pushes the front side wall 9 or the rear side wall 12 backward in the direction of spin-drying rotation, leaving a larger area to store and spin-dry the clothes.

[0073] The front or rear tensioning mechanism can use the relative motion of gears and racks to pull it back and forth, or it can be equipped with the extension and retraction of a hydraulic rod to pull it back and forth. These are all things we need to protect.

[0074] The technical solutions of this invention are not limited to the scope described in the above embodiments; equivalent solutions and other technical modifications are also within the scope of protection.

Claims

1. A washing machine for scrubbing, comprising a base (1) and a motor (5), wherein an outer tub (2) and a top cover (3) are fixedly mounted on the base (1), a tub cover (4) is mounted on the top cover (3), a water-resistant outer tub (27) is provided inside the outer tub (2), the outer tub (27) is fixed to the motor (5), and a spin-drying rotating inner tub (6) is fixedly mounted inside the outer tub (27), and further comprising a control circuit board and control buttons, characterized in that: A kneading chamber (7) is provided inside the spin-drying rotating inner drum (6). A U-shaped or V-shaped conveyor belt (8) is provided inside the kneading chamber (7). The front end edge (10) of the conveyor belt (8) is located on the front side wall (9) of the kneading chamber (7), and the rear end edge (11) is located on the rear side wall (12) of the kneading chamber (7). The middle part of the conveyor belt (8) is located at the bottom of the kneading chamber (7). The front side wall (9) and the rear side wall (12) are symmetrically arranged facing each other within the kneading chamber (7), and the front side wall (9) and the rear side wall (12) are U-shaped or V-shaped. 8) Slide back and forth on the front sidewall (9) or the rear sidewall (12); the two sides of the conveyor belt (8) slide in contact with the sidewall (13) of the kneading chamber, and the sidewall (13) of the kneading chamber on both sides is a baffle on both sides of the conveyor belt (8); a symmetrical front stretching mechanism and a rear stretching mechanism are provided on the spin-drying rotating inner drum (6), which are fixedly connected to the front end edge (10) and the rear end edge (11) of the conveyor belt (8) respectively, for pulling the conveyor belt (8) forward or backward; the front stretching mechanism and the rear stretching mechanism are respectively connected to the control circuit board.

2. A washing machine with a scrubbing function according to claim 1, characterized in that: The kneading cavity (7) has symmetrical side walls (13) on both sides; a group of pressure rollers (14) are provided in the lower part along the center line of the side wall (13) of each kneading cavity, the axis of the pressure rollers (14) is perpendicular to the side wall (13) of the kneading cavity, and when the conveyor belt (8) is pulled back and forth, the wheel surface of the pressure rollers (14) presses against the two sides of the conveyor belt (8); the line connecting the axes of each group of pressure rollers (14) is arc-shaped; a clothing isolation cover (15) is provided outside the group of pressure rollers (14), and the clothing isolation cover (15) is fixed on the side wall (13) of the kneading cavity.

3. A washing machine with a scrubbing function according to claim 2, characterized in that: Two proximity switches (16) are provided at the upper middle part of the spin-drying rotating inner drum (6) to adjust the height of the front end edge (10) and the rear end edge (11) of the conveyor belt (8). The two proximity switches (16) are symmetrically arranged on the spin-drying rotating inner drum (6) and are at the same horizontal height. They intermittently contact the front end edge (10) and the rear end edge (11) of the conveyor belt (8), respectively. The proximity switches (16) are connected to the control circuit board.

4. A washing machine with a scrubbing function according to claim 3, characterized in that: Both the front stretching mechanism and the rear stretching mechanism include a set of motors (17) and gear sets; the output wheel or output shaft of the gear set is connected or fixed to a stranded reel (19), and the stranded reel (19) is fixedly connected to the front end edge (10) or rear end edge (11) of the conveyor belt (8) via a wire (20); the control line of the motor (17) is connected to the control circuit board.

5. A washing machine with a scrubbing function according to claim 4, characterized in that: At the top of the spin-drying inner drum (6) and below the upper cover (3), there are symmetrically arranged roller contacts (21) of the control lines of two sets of motors (17) or proximity switches (16), and the roller contacts (21) are fixed on the column springs (22); corresponding annular metal slides are provided on the lower surface of the upper cover (3), and one roller contact (21) contacts one corresponding metal slide; the control circuits of the two motors (17) output in opposite directions, or the twisted coils (19) of the two motors (17) rotate in opposite directions.

6. A washing machine with a scrubbing function according to claim 4, characterized in that: or Several intermediate wire drawing wheels and the guide wheel of the conveyor belt are respectively provided at the top of the front side wall (9) or the rear side wall (12). The conveyor belt turns to the back of the conveyor belt via the guide wheel, and the wire drawing (20) turns to the back of the conveyor belt via the intermediate wire drawing wheel. The guide wheel is higher than the intermediate wire drawing wheel (18). The proximity switch (16) is provided on the back of the front side wall (9) or the rear side wall (12). The guide thread sleeve (36) of the wire drawing (20) is fixed below the proximity switch (16). The lower end of the guide thread sleeve is connected to the winding reel (19) of the motor (17) at the bottom of the outer barrel (2) via an external waterproof pipe. The lower end of the wire drawing (20) is connected to the winding reel (19). The motor (17) is fixed at the bottom of the outer barrel (2). Baffles are provided on both sides of the conveyor belt (8). The components of the front side wall (9) or the rear side wall (12) are symmetrically arranged.

7. A washing machine with a scrubbing function according to claim 2, characterized in that: The horizontal drop between the front edge (10) and the rear edge (11) of the conveyor belt (8) is 20-50 cm; the lowest point of the front edge (10) or the rear edge (11) is higher than the maximum liquid level height during washing; the line connecting the front sidewall (9), the rear sidewall (12), and the wheel surface of the pressure roller (14) is V-shaped and smoothly connected; the angle between the front sidewall (9) and the rear sidewall (12) of the conveyor belt (8) is 0-120 degrees; each group of pressure rollers (14) is uniformly provided with at least 3 pressure rollers (14); the axial width of each pressure roller wheel surface is 1 / 12-1 / 4 of the width of the conveyor belt.

8. A washing machine with a scrubbing function according to claim 4, characterized in that: in A set of sliding rods (23) are fixedly installed in the longitudinal grooves on the front sidewall (9) and the rear sidewall (12) of the kneading cavity (7). The set of sliding rods (23) includes two parallel sliding rods (23) on the left and right sides, and the axis of the sliding rods (23) is parallel to the movement direction of the conveyor belt (8). Two sliding sleeves (28) are respectively provided on the front end edge (10) or the rear end edge (11) of the conveyor belt (8), and each sliding sleeve (28) is fitted on a sliding rod (23). The drawing wire (20) is fixed in the middle of the front end edge (10) or the rear end edge (11). 0) There is a sliding sleeve (28) on each side; the bottom outline of the kneading cavity (7) is rectangular; each wire (20) is connected with a tensioning fine adjustment screw; or each group of pressure rollers (14) is a pressure roller group, and the pressure roller group is fixed on the side wall (13) of the kneading cavity by several lifting columns (29); the upper end of the pressure roller group is provided with several cylindrical protrusions (35), the upper end of the lifting column (29) is fixed on the side wall (13), the pressure sleeve is provided inside the pressure sleeve, the middle and upper ends of the protrusions are sleeved inside the pressure sleeve, and the protrusions are topped on the lower end of the cylindrical spring (30).

9. A washing machine with a scrubbing function according to claim 2, characterized in that: in On the front sidewall (9) and rear sidewall (12) of the kneading chamber (7), several rows of pulleys (24) are evenly arranged along the direction of movement of the conveyor belt (8), and each row of pulleys (24) has several pulleys (24); when the conveyor belt (8) is pulled back and forth, the lower surface of the conveyor belt (8) rolls on the pulleys (24); several horizontally placed protruding kneading ribs (25) are provided on the conveyor belt (8), and they are only provided in the middle of the transverse direction of the conveyor belt (8), while the surfaces on both sides of the conveyor belt (8) are straight. The sidewall (13) of each kneading chamber is in contact with the surface of the pressure roller (14); the sidewall (13) of each kneading chamber is flat and the surface of the conveyor belt (8) is in contact with the sides of the conveyor belt (8), but the upper middle part of the sidewall (13) of the kneading chamber is concave inward; a number of spin-drying outlets (26) are provided in the concave part (31) of the sidewall (13) of the kneading chamber on both sides, and a number of spin-drying outlets (26) are also provided on the front sidewall (9) and the rear sidewall (12), and the spin-drying outlets (26) are connected to the outer tub (27) of the washing machine.

10. A washing machine with a scrubbing function according to claim 9, characterized in that: The ratio of the length of the long side to the width of the rectangular upper opening of the kneading cavity (7) is 1:(0.6-1). The front sidewall (9) and the rear sidewall (12) are arranged downward and inward at the position of the long side. The distance between the two sides of the conveyor belt (8) and the sidewall (13) of the kneading cavity is a clearance fit. The distance between the clothing isolation cover (15) and the conveyor belt (8) is a clearance fit. The protrusion height of the kneading rib (25) is 0.4-4CM. The distance between the front and rear kneading ribs (25) is 5-15CM. The back of the conveyor belt (8) is provided with several horizontally placed long fixed steel strips. The kneading rib (25) is threaded and several screws are screwed on the long fixed steel strips. The kneading rib (25) is fixed to the conveyor belt (8) by screws. The pulley (24) passes between the two long fixed steel strips. Alternatively, the kneading rib (25) and the conveyor belt (8) are integral, or glued or riveted.

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