Non-porous inner barrel water switch assembly and washing machine

Abstract

The utility model provides a non-porous inner tub water switch assembly and a washing machine, the non-porous inner tub water switch assembly comprises a drainage channel, a fixed inclined plane ring, a movable inclined plane ring and a push plate ring, the drainage channel is a relative sealing structure formed by a rubber sealing ring, a water passing channel and a water tank at the bottom of an outer tub, and the fixed inclined plane ring and the movable inclined plane ring are arranged in the drainage channel. The movable bevel ring can drive the push plate ring to jack up or descend relative to the fixed bevel ring under the action of a force application device, and when the push plate ring moves upwards, the upper portion of the rubber sealing ring can be driven to move upwards and be tightly attached to an inner barrel flange or an inner barrel bottom plane. And meanwhile, a drainage hole in the sealing position of the rubber sealing ring on the inner barrel or the inner barrel flange is opened. According to the non-porous inner barrel water switch assembly, through the optimized design of the water switch assembly, the sanitation problem possibly caused by inner barrel holes of a traditional washing machine is avoided, the smooth discharge and sealing effect of washing water is remarkably improved, and more efficient, clean and comfortable washing experience is brought to a user.

Description

Technical Field

[0001] The utility model relates to the technical field of washing machines, and particularly relates to a water switch assembly for a seamless inner barrel and a washing machine. Background Art

[0002] In order to solve the problems of water conservation and secondary pollution of fully automatic pulsator washing machines, water-saving washing machines, that is, seamless inner barrel washing machines, have been developed in the industry. For example, the structure of a pulsator washing machine is that the lower part of the inner barrel is integrally designed, and there is a circle of water throwing holes only at the part of the barrel wall close to the balance ring, and there are no holes in other parts. During the washing process of this structure washing machine, water is contained in the inner barrel, and there is no water between the inner barrel and the box body, which can solve the problems of water conservation and secondary pollution. However, the existing water switch device of the inner barrel has poor sealing effect and short service life. The dirty water in the inner barrel must be drained before dehydration, but it needs to be closed during washing and dehydration for rotation. How to effectively drain the water in the inner barrel is a technical problem that needs to be solved currently.

[0003] The applicant has previously disclosed various water switch structures for water-saving washing machines. For example, Chinese Patent with publication number CN107287842A discloses a water switch device for a water-saving washing machine and its washing machine, which drives an annular push plate to move upward to open the drain hole on the inner barrel flange by using a hinge or an electromagnetic opening component, so as to achieve the purpose of no positioning required for the water-saving washing machine during the drainage condition. However, during drainage in the above solution, the washing water is easily accumulated at the bottom of the outer barrel, and it will affect the normal use of the water switch opening component, affecting the user experience. Summary of the Utility Model

[0004] In view of this, the utility model aims to provide a water switch assembly for a seamless inner barrel and a washing machine to solve at least one of the above technical problems.

[0005] To achieve the above purpose, the technical solution of the utility model is realized as follows:

[0006] A water switch assembly for a seamless inner barrel, comprising:

[0007] A drainage channel formed by a rubber sealing ring, a water passing channel and a water tank structure at the bottom of the outer barrel, and the drainage channel is a relatively sealed structure;

[0008] A fixed inclined surface ring arranged inside the rubber sealing ring;

[0009] A movable inclined surface ring sleeved on the fixed inclined surface ring and capable of rotating, lifting or descending relative to the fixed inclined surface ring under the action of a force applying device;

[0010] A push plate ring hinged and fixed on the movable inclined surface ring through a plain bearing and capable of moving upward or downward when the movable inclined surface ring rotates, lifts or descends;

[0011] When the push plate ring moves upward, it can drive the upper part of the rubber sealing ring to move upward and close to the inner barrel flange or the bottom plane of the inner barrel, and at the same time lift up and open the normally closed one-way valve that blocks the drainage hole on the inner barrel or the inner barrel flange. The drainage hole is located on the inner side of the position where the rubber sealing ring closes the inner barrel flange or the bottom of the inner barrel.

[0012] Furthermore, the fixed bevel ring is provided with a first inner annular surface and a first guiding bevel, and the relatively movable bevel ring is provided with a second rotating annular surface and a second guiding bevel, the second rotating annular surface is rotationally matched with the first inner annular surface, and the second guiding bevel is matched with the first guiding bevel.

[0013] Furthermore, a first vertical guide rib is provided on the fixed bevel ring, and a first guide groove is correspondingly provided on the push plate ring to cooperate with it, so that the push plate ring can only move up and down along the first vertical guide rib when it is lifted by the rotation of the movable bevel ring.

[0014] Furthermore, the rubber sealing ring has a corrugated structure, and the top of the rubber sealing ring can extend upward when the push plate ring is lifted.

[0015] Furthermore, the force-applying device includes a steel cable assembly, which can pull the movable bevel ring to rotate under the action of an external traction device. A first return spring is arranged between the movable bevel ring and the fixed bevel ring. The movable bevel ring can be reset under the action of the first return spring after the force-applying device loses force.

[0016] Furthermore, the steel cable assembly includes a steel cable and a movable steel cable sleeve thereon, each end of the steel cable has an end structure, namely a front end head of the steel cable and a rear end head of the steel cable, the front end head of the steel cable is fixed to the movable inclined surface ring, the rear end head of the steel cable is fixed to a buffer spring, the buffer spring is connected to a traction device connection structure, the traction device connection structure is used to connect an external traction device, the two ends of the steel cable sleeve are respectively fixed with a front end fixing seat of the steel cable sleeve and a rear end fixing seat of the steel cable sleeve, the front end fixing seat of the steel cable sleeve is fixed to the fixed inclined surface ring, and the steel cable and the steel cable sleeve pass through the bottom of the outer barrel and are fixed to the outside of the bottom of the outer barrel through the rear end fixing seat of the steel cable sleeve.

[0017] Furthermore, one or more drainage holes are arranged at a preset distance relative to the central axis of the inner barrel, and a normally closed one-way valve is arranged on each drainage hole, or the opening and closing of multiple drainage holes are controlled by one normally closed one-way valve.

[0018] Furthermore, the normally closed one-way valve includes a valve plug support seat, which is fixedly installed on the bottom of the inner barrel flange, with its center extending to the middle of the drain hole, and a valve plug fixing ring is fixedly installed on it. The valve plug fixing ring has a through hole inside, and the valve plug rod passes through the inside movably, and the end of the valve plug rod is fixed with a valve plug movable ring by a fixing nut, and a second return spring is arranged between the valve plug fixing ring and the valve plug movable ring, and the second return spring is sleeved on the valve plug rod, and a rubber valve plug is fixed to the other end of the valve plug rod, which is sealed with the drain hole under the action of the second return spring.

[0019] Compared with the prior art, the hole-free inner barrel water switch assembly described in the utility model has the following advantages:

[0020] (1) The hole-free inner barrel water switch assembly described in the utility model adopts a bevel ring rotation mechanism to control the opening and closing of the drainage channel, thereby reducing the direct friction of mechanical parts and reducing wear. At the same time, a rubber sealing ring is used to lift upward with the rotating lifting mechanism during drainage to form a sealed drainage channel for outward discharge, thereby improving the reliability of the water switch opening component and reducing the frequency of maintenance and replacement.

[0021] (2) The hole-free inner barrel water switch assembly described in the utility model, through the optimized water switch assembly design, not only avoids the hygiene problems that may be caused by the holes in the inner barrel of a traditional washing machine, but also significantly improves the smooth discharge and sealing effect of the washing water, bringing users a more efficient, clean and comfortable washing experience.

[0022] Another object of the utility model is to provide a washing machine, comprising an outer barrel and an inner barrel, wherein the inner barrel is concentrically sleeved inside the outer barrel, and a hole-free inner barrel water switch assembly as described above is arranged at the bottom of the inner barrel.

[0023] Furthermore, two drain outlets are provided at the bottom of the outer barrel, namely an outer drain outlet and an inner drain outlet, wherein the inner drain outlet is connected to the water passage, and the outer drain outlet is provided at the bottom of the outer barrel outside the water passage, the inner drain outlet is connected to the normally closed port of the drain valve, and the outer drain outlet is connected to the normally open end of the drain valve.

[0024] The advantages of the washing machine and the above-mentioned hole-free inner barrel water switch assembly over the prior art are the same, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0026] Figure 1Schematic structural principle diagram of the washing machine that does not require cleaning according to the embodiment of the present utility model;

[0027] Figure 2 Schematic cross-sectional structure diagram of the water passing switch assembly according to the embodiment of the present utility model;

[0028] Figure 3 Schematic side view structure diagram of the water passing switch assembly according to the embodiment of the present utility model;

[0029] Figure 4 Schematic front view structure diagram of the water passing switch assembly according to the embodiment of the present utility model;

[0030] Figure 5 Schematic top view structure diagram of the water passing switch assembly according to the embodiment of the present utility model;

[0031] Figure 6 Schematic side view structure diagram of the movable inclined plane ring according to the embodiment of the present utility model;

[0032] Figure 7 Schematic side view structure diagram of the fixed inclined plane ring according to the embodiment of the present utility model;

[0033] Figure 8 Schematic side view structure diagram of the plain bearing according to the embodiment of the present utility model;

[0034] Figure 9 Schematic side view structure diagram of the push plate ring according to the embodiment of the present utility model;

[0035] Figure 10 Schematic side view structure diagram of the water passing channel according to the embodiment of the present utility model;

[0036] Figure 11 Schematic cross-sectional structure diagram of the rubber sealing ring according to the embodiment of the present utility model;

[0037] Figure 12 Schematic side view structure diagram of the rubber sealing ring according to the embodiment of the present utility model;

[0038] Figure 13 Schematic side view structure diagram of the steel cable assembly according to the embodiment of the present utility model;

[0039] Figure 14 Schematic side view structure diagram of the inner barrel flange according to the embodiment of the present utility model;

[0040] Figure 15 Schematic cross-sectional structure diagram of the normally closed one-way valve provided on the inner barrel according to the embodiment of the present utility model;

[0041] Explanation of reference numerals:

[0042] 1. Inner barrel; 2. Outer barrel; 3. Outer drainage port; 4. Drain valve; 5. Drainage channel; 6. Inner drainage port; 7. First traction motor; 8. Clutch assembly; 9. Second traction motor; 10. Air chamber

[0043] 1011. Water passage; 1012. Fixed inclined surface ring; 10121. First inner ring surface; 10122. First guiding inclined surface; 10123. First bottom surface; 10124. First vertical guiding rib; 10125. First steel cable fixing structure; 1013. Movable inclined surface ring; 10131. Second rotating ring surface; 10132. Second guiding inclined surface; 10133. First top surface; 10134. Second steel cable fixing structure; 1014. Plain bearing; 1015. Push plate ring; 10151. First guiding groove; 10152. First plane; 1016. Rubber sealing ring; 1017. Steel cable assembly; 10171. Steel cable; 10172. Front end of steel cable; 10173. Front fixing seat of steel cable sleeve; 10174. Steel cable sleeve; 10175. Rear fixing seat of steel cable sleeve; 10176. Rear end of steel cable; 10177. Buffer spring; 10178. Traction device connecting structure; 1018. First return spring; 1020. Normally closed check valve; 1021. Inner barrel flange; 1022. Fixed nut; 1023. Valve plug movable ring; 1024. Rubber valve plug; 1025. Valve plug rod; 1026. Valve plug fixing ring; 1027. Second return spring; 1028. Valve plug support seat; 1029. Drainage hole. Detailed implementation mode

[0044] In order to make the technical means, achieved purposes and effects of the present utility model easy to understand, the embodiments of the present utility model will be described in detail below with reference to specific drawings.

[0045] It should be noted that all terms indicating directionality and positional indication in the present utility model, such as: "up", "down", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "top", "bottom", "lateral", "longitudinal", "center", etc., are only used to explain the relative positional relationship and connection situation between components in a certain specific state (as shown in the drawings), and are only for the convenience of describing the present utility model, rather than requiring the present utility model to be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present utility model. In addition, the descriptions involving "first", "second", etc. in the present utility model are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features.

[0046] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection; it may be a direct connection, or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0047] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0048] As Figures 1 to 15 shown, the present application discloses a poreless inner barrel water switch assembly, including:

[0049] A drainage channel 5 formed by a rubber sealing ring 1016 and a water passing channel 1011 with a sink structure at the bottom of the outer barrel 2, and the drainage channel 5 is a relatively sealed structure;

[0050] A fixed inclined surface ring 1012 is arranged inside the rubber sealing ring 1016;

[0051] A movable inclined surface ring 1013 is sleeved on the fixed inclined surface ring 1012 and can rotate, lift or descend relative to the fixed inclined surface ring 1012 under the action of a force applying device;

[0052] A push plate ring 1015 is hinged and fixed to the movable inclined surface ring 1013 through a plain bearing 1014 and can move upward or downward when the movable inclined surface ring 1013 rotates, lifts or descends;

[0053] When the push plate ring 1015 moves upward, it can drive the upper part of the rubber sealing ring 1016 to move upward and closely adhere to the inner barrel flange 1021 or the bottom plane of the inner barrel 1, and at the same time lift and open the normally closed one-way valve 1020 that blocks the drain hole 1029 on the inner barrel 1 or the inner barrel flange 1021. The drain hole 1029 is located inside the position where the rubber sealing ring 1016 closes the inner barrel flange 1021 or the bottom of the inner barrel 1.

[0054] The present application discloses a water switch assembly for a seamless inner tub. By providing a relatively sealed drainage channel 5 formed jointly by a rubber sealing ring 1016, a water passage 1011 and a sink structure at the bottom of the outer tub 2, drainage holes 1029 for drainage are provided on the inner tub 1 or on both the inner tub 1 and the inner tub flange 1021. A normally closed one-way valve 1020 is provided on the drainage holes 1029. The normally closed one-way valve 1020 closes the drainage holes 1029 under normal conditions. By providing a fixed inclined surface ring 1012 inside the rubber sealing ring 1016 and a movable inclined surface ring 1013 sleeved on the fixed inclined surface ring 1012, during the drainage operation, the movable inclined surface ring 1013 can rotate and lift or rotate and descend relative to the fixed inclined surface ring 1012 under the action of an external force applying device, forming an inclined surface lifting mechanism. A push plate ring 1015 is provided on the upper surface of the movable inclined surface ring 1013 through a plain bearing 1014. When the movable inclined surface ring 1013 rotates and lifts, the push plate ring 1015 can move upward to drive the upper part of the rubber sealing ring 1016 to move upward and closely adhere to the inner tub flange 1021 or the bottom plane of the inner tub 1 to close. At the same time, it can push open the normally closed one-way valve 1020 provided on the drainage holes 1029 inside the closed position of the rubber sealing ring 1016. The washing water inside the inner tub 1 flows through the drainage holes 1029 to the closed drainage channel 5 and finally flows to the outside of the washing machine tub assembly. When in the washing operation or the dehydration operation, the movable inclined surface ring 1013 descends relative to the fixed inclined surface ring 1012, and the push plate ring 1015 descends together with the movable inclined surface ring 1013. The upper part of the rubber sealing ring 1016 falls back and no longer closely adheres to the inner tub flange 1021 or the bottom plane of the inner tub 1. The normally closed one-way valve 1020 returns to its position and blocks the drainage holes 1029, thereby ensuring the sealing performance between the inner tub 1 and the outer tub 2.

[0055] The water switch assembly for a seamless inner tub disclosed in the present application adopts a rotating mechanism of inclined surface rings to control the opening and closing of the drainage channel 5, reducing the direct friction of mechanical components, reducing wear. At the same time, it adopts the rubber sealing ring 1016 to lift upward together with the rotating lifting mechanism during drainage to form a sealed drainage channel 5 for outward drainage, improving the reliability of the water switch opening component in use and reducing the frequency of maintenance and replacement.

[0056] As a preferred example of the present application, a first inner ring surface 10121 and a first guiding inclined surface 10122 are provided on the fixed inclined surface ring 1012, and a second rotating ring surface 10131 and a second guiding inclined surface 10132 are provided on the opposite movable inclined surface ring 1013. The second rotating ring surface 10131 is rotationally engaged with the first inner ring surface 10121, and the second guiding inclined surface 10132 is engaged with the first guiding inclined surface 10122. In the example of the present application, the first inner ring surface 10121 and the first guiding inclined surface 10122 are provided on a first bottom surface 10123. Correspondingly, the second rotating ring surface 10131 and the second guiding inclined surface 10132 are provided on a first top surface 10133. During actual use, when the movable inclined surface ring 1013 rotates under the action of a force-applying device, the second guiding inclined surface 10132 can rotate and lift along the first guiding inclined surface 10122 until the second rotating ring surface 10131 on one side of the second guiding inclined surface 10132 is lifted and moves onto the first inner ring surface 10121 on the fixed inclined surface ring 1012. At this time, the movable inclined surface ring 1013 moves axially relative to the fixed inclined surface ring 1012 by a certain distance, realizing the lifting movement of the movable inclined surface ring 1013. And when the fixed inclined surface ring 1012 further rotates under the action of the force-applying device later, it only makes a rotational movement relative to the fixed inclined surface ring 1012 and no longer lifts.

[0057] This setting ensures that during the drainage process, the movable inclined surface ring 1013 can accurately lift and drive the push plate ring 1015 to move, thereby effectively controlling the opening and closing of the drainage holes 1029, and allowing the movable inclined surface ring 1013 to still be able to perform a stable rotational movement after lifting, ensuring the stability and reliability of the drainage process, with simple operation and reliable use.

[0058] As a preferred example of the present application, a first vertical guiding rib 10124 is further provided on the fixed inclined surface ring 1012, and a first guiding groove 10151 is correspondingly provided on the push plate ring 1015 to cooperate with it, so that the push plate ring 1015 can only move up and down along the first vertical guiding rib 10124 when rotating and lifting with the movable inclined surface ring 1013. As a preferred example of the present application, a first plane 10152 is provided on the push plate ring 1015, and the first plane 10152 cooperates with the first bottom surface 10123. When the movable inclined surface ring 1013 rotates up or down, the push plate ring 1015 is pushed to move up and down through the plain bearing 1014, and then the top of the rubber sealing ring 1016 is pushed to move axially. The rubber sealing ring 1016 forms a sealed environment between its inner or outer ring and the bottom of the outer barrel 2 through the water passage 1011. At the same time, the rubber sealing ring 1016 has a corrugated structure, and its top has a certain ductility and can move axially within a small range.

[0059] This design effectively prevents the push plate ring 1015 from deflecting or shaking during movement, improves the stability and reliability of the overall structure, and at the same time, the precise control of the push plate ring 1015 jacking ensures that the opening and closing process of the drainage hole is more accurate and reliable, avoiding problems such as poor drainage or leakage caused by inaccurate jacking stroke. This setting significantly enhances the guiding stability and precise controllability of the push plate ring 1015 during the jacking process by adding the matching design of the first vertical guide rib 10124 and the first guide groove 10151, improves drainage efficiency and reduces maintenance costs, and brings users a more stable, reliable, efficient and convenient use experience.

[0060] As a preferred example of the present application, the force-applying device includes a steel cable assembly 1017, which can pull the movable bevel ring 1013 to rotate under the action of an external traction device, and a first reset spring 1018 is arranged between the movable bevel ring 1013 and the fixed bevel ring 1012, and the movable bevel ring 1013 can be reset under the action of the first reset spring 1018 after the force-applying device loses its force. In the example of the present application, the rotation of the movable bevel ring 1013 is pulled by the steel cable assembly 1017, so that the movable bevel ring 1013 can be quickly and effectively pulled to rotate under the action of the external traction device to achieve the required function or operation. At the same time, the movable bevel ring 1013 can be quickly reset with the help of the force of the first reset spring 1018 after the force-applying device loses its force, ensuring the rapid response and efficient cycle work of the device, simple and reliable operation, and convenient assembly, so that the hole-free inner barrel water switch assembly has the characteristics of automation and reliable operation, and can meet different working conditions and performance requirements.

[0061] As a preferred example of the present application, the cable assembly 1017 includes a cable 10171 and a cable sleeve 10174 movably sleeved thereon. Each end of the cable 10171 has a terminal structure, namely a cable front end 10172 and a cable rear end 10176. The cable front end 10172 is fixed to the second cable fixing structure 10134 of the movable inclined surface ring 1013. The cable rear end 10176 is fixed to a buffer spring 10177, and the buffer spring 10177 is connected to a tractor connection structure 10178. The tractor connection structure 10178 is used to connect an external traction device. The two ends of the cable sleeve 10174 are respectively fixed with a cable sleeve front fixing seat 10173 and a cable sleeve rear fixing seat 10175. The cable sleeve front fixing seat 10173 is fixed to the first cable fixing structure 10125 of the fixed inclined surface ring 1012. The cable 10171 and the cable sleeve 10174 pass through the bottom of the outer barrel and are fixed to the outside of the bottom of the outer barrel 2 through the cable sleeve rear fixing seat 10175. In the example of the present application, when the tractor pulls the tractor connection structure 10178, the buffer spring 10177, the cable 10171 and other parts, causing them to move along the axis of the cable sleeve 10174, and then pulling the movable inclined surface ring 1013 to rotate a certain angle. The above setting discloses a specific structure of a cable assembly 1017, which is mainly composed of a cable 10171 and a cable sleeve 10174, wherein the cable sleeve can move flexibly on the cable. The two ends of the cable are respectively equipped with a cable front end 10172 and a cable rear end 10176, ensuring the stable connection and reliable traction of the cable 10171. The cable front end 10172 is fixed to the movable inclined surface ring 1013, enabling the cable assembly 1017 to directly act on the inclined surface lifting mechanism, thereby realizing effective inclined surface adjustment or control; while the fixation of the cable rear end 10176 to the buffer spring 10177 provides a good buffering effect, reducing the impact and damage to the inclined surface mechanism caused by the instability or sudden stop of the external traction device. The design of the above cable assembly 1017 ensures the stability of the cable during movement, and also enhances the structural strength and stability of the entire system by passing through the bottom of the outer barrel and fixing it on the outside, meeting the requirements in various application scenarios and providing a reliable solution for the adjustment and control of the inclined surface lifting mechanism.

[0062] As a preferred example of the present application, one or more preset distances of the drain holes 1029 relative to the central axis of the inner tub 1 are provided, and a normally closed one-way valve 1020 is provided on each of the drain holes 1029, or the opening and closing of the multiple drain holes 1029 is controlled by one normally closed one-way valve 1020. In the example of the present application, the inner tub assembly is composed of a non-porous inner tub 1 and an inner tub flange 1021. There are dehydration holes near the balance ring at the upper part of the inner tub 1, which is a known technical structure. The inner tub 1 and the inner tub flange 1021 are hermetically and fixedly connected. There is a structure for fixedly connecting the upper shaft sleeve of the clutch in the middle part, which is also a known technical structure. The drain holes 1029 provided on the inner tub assembly penetrate through the inner tub 1 or penetrate through the inner tub 1 and the inner tub flange 1021, so as to enable the drain holes 1029 to drain the washing water in the inner tub 1 when the normally closed one-way valve 1020 is opened. As a preferred example of the present application, the drain holes 1029 penetrate through the inner tub 1 and the inner tub flange 1021. This setting directly sets the drain holes 1029 on the inner tub 1 or the inner tub flange 1021, reducing additional drain pipes and connectors, making the structure of the washing machine more compact; at the same time, since the normally closed one-way valve 1020 is directly connected to the drain holes 1029, it not only realizes the effective drainage of the washing water, but also avoids the accidental backflow of the washing water during or after the drainage process, ensuring the hygiene and safety of the washing process, and being convenient for maintenance and replacement.

[0063] As a preferred example of the present application, the normally closed one-way valve 1020 includes a valve plug support seat 1028. The valve plug support seat 1028 is fixedly installed at the bottom of the inner tub flange 1021, and its center extends to the middle of the drain hole 1029. A valve plug fixing ring 1026 is fixedly installed thereon. There is a through hole inside the valve plug fixing ring 1026, and a valve plug rod 1025 movably passes through it. The end of the valve plug rod 1025 is fixed with a valve plug movable ring 1023 through a fixing nut 1022. A second return spring 1027 is provided between the valve plug fixing ring 1026 and the valve plug movable ring 1023. The second return spring 1027 is sleeved on the valve plug rod 1025. The other end of the valve plug rod 1025 is fixed with a rubber valve plug 1024, which is in sealing cooperation with the drain hole 1029 under the action of the second return spring 1027.

[0064] The above setting discloses the specific structure of a normally closed one-way valve 1020, enabling it, when drainage is required, to cooperate with a force-applying device including a cable assembly 1017 to drive the valve plug rod 1025 to overcome the action of the second return spring 1027 to open the drain hole 1029 when pulling the movable inclined surface ring 1013 to rotate and lift relative to the fixed inclined surface ring 1012, driving the push plate ring 1015 to move upward, so that the washing water is discharged through the drain hole 1029. The structure is simple and reliable in use, ensuring that during the operation of the washing machine, the drain hole can maintain a tight seal when drainage is not required, preventing the backflow or leakage of the washing water; when drainage is required, the drain hole 1029 can be quickly opened through simple operation or an automatic control system to smoothly discharge the washing water.

[0065] This application also discloses a washing machine, including an outer tub 2 and an inner tub 1. The inner tub 1 is concentrically sleeved inside the outer tub 2, and the above-mentioned holeless inner tub water switch assembly is arranged at the bottom of the inner tub 1. In the example of this application, a clutch assembly 8 is fixedly installed on the outer side of the bottom of the washing machine outer tub 2, and a structure matching the water seal of the clutch assembly 8 is arranged at the center of the bottom of the outer tub 2 to seal and fix it.

[0066] In the example of this application, two drain ports are arranged at the bottom of the outer tub 2, namely an outer drain port 3 and an inner drain port 6. Among them, the inner drain port 6 is communicated with the water passing channel 1011, and the outer drain port 3 is arranged at the bottom of the outer tub 2 outside the water passing channel 1011. In the example of this application, the inner drain port 6 is arranged inside the outer edge of the water passing channel 1011, and the inner drain port 6 is connected to the normally closed port of the drain valve 4 and is also connected to the air chamber 10. The air chamber 10 is a structure for sensing the water level inside the inner tub 1 and is connected to the washing machine water level sensor. The outer drain port 3 is connected to the normally open end of the drain valve 4, that is, directly leads to the outer drain pipe.

[0067] In the example of this application, two traction motors are arranged on the outer side of the outer tub 2. One is a conventional traction motor for controlling the drain valve 4 and the clutch assembly 8, defined as the first traction motor 7, and the other is a device for controlling the movement of the cable assembly 1017, defined as the second traction motor 9.

[0068] In the example of this application, the working process of the washing machine is as follows:

[0069] 1. Water inlet process of the washing machine: The first traction motor 7 does not operate, that is, the clutch assembly 8 is set to the washing state, and the drain valve 4 is in the closed state. The second traction motor 9 operates, pulling the cable 10171 to move the movable inclined surface ring 1013 upward, pushing the push plate ring 1015 and the upper part of the rubber sealing ring 1016 upward, and then pushing the valve plug rod 1025 upward. At the same time, the upper part of the rubber sealing ring 1016 is closely attached to the bottom of the inner barrel flange 1021. While forming a relatively sealed state inside the rubber sealing ring 1016, the drain port 1029 is opened and communicated with the inside of the inner barrel 1. The water entering the inner barrel 1 passes through the drain port 1029, the water passage, the inner side drain port 6, etc., and finally communicates with the air chamber 10, so that the water level sensor can sense the water level inside the inner barrel 1;

[0070] 2. Washing process: When the water inside the inner barrel 1 reaches the set water level, both the first traction motor 7 and the second traction motor 9 are in the non-powered state and do not work. Under the action of the first return spring 1018, the movable inclined surface ring 1013 rotates and moves downward, causing the top surface of the rubber sealing ring 1016 to move downward, separating from the bottom of the inner barrel flange 1021 and the valve plug rod 1025, making the rubber valve plug 1024 in the closed state. At this time, whether the inner barrel 1 rotates or not, the water inside the inner barrel 1 is in the water retention state;

[0071] 3. Drainage: When a washing cycle ends, drainage is required first. At this time, the first traction motor 7 and the second traction motor 9 are opened simultaneously, so that the water inside the inner barrel 1 passes through the water passage and the drain valve 4 and is discharged to the outer drain pipe.

[0072] 4. Dehydration: When the drainage is completed and the water level sensor senses that the water level is empty, the second traction motor 9 is closed, the movable inclined surface ring 1013 is reset, the top surface of the rubber sealing ring 1016 separates from the bottom of the inner barrel flange 1021 and the valve plug rod 1025, the first traction motor 7 is in the working state, the washing machine works for dehydration, the inner barrel 1 rotates, and a small amount of water inside the inner barrel 1 is thrown out through the dehydration holes in the upper part of the inner barrel 1 into the inside of the outer barrel 2, and then is discharged to the outer drain pipe through the outer side drain port 3 at the bottom of the outer barrel and the drain valve 4.

[0073] In the example of this application, the non-porous inner barrel refers to an inner barrel assembly without a washing water exchange flow hole between the inner and outer barrels under the washing condition. The drain port 1029 on the inner barrel 1 is closed under normal conditions and can be opened under the drainage condition. Preferably, the self-cleaning washing machine of this application is a pulsator washing machine.

[0074] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hole-free inner barrel water switch assembly, characterized in that: include: The drainage channel (5) is formed by the rubber sealing ring (1016), the water passage (1011) and the water tank structure at the bottom of the outer barrel (2), and the drainage channel (5) is a relatively sealed structure; A fixed bevel ring (1012) is arranged inside the rubber sealing ring (1016); A movable bevel ring (1013) is sleeved on the fixed bevel ring (1012) and can be rotated to be lifted or lowered relative to the fixed bevel ring (1012) under the action of a force-applying device; A push plate ring (1015) is hingedly fixed on the movable inclined surface ring (1013) through a plane bearing (1014) and can move upward or downward when the movable inclined surface ring (1013) rotates to lift or descend; When the push plate ring (1015) moves upward, it can drive the upper part of the rubber sealing ring (1016) to move upward and closely adhere to the inner barrel flange (1021) or the bottom plane of the inner barrel (1), and at the same time lift up and open the normally closed one-way valve (1020) that blocks the drainage hole (1029) on the inner barrel (1) or the inner barrel flange (1021), and the drainage hole (1029) is located on the inner side of the rubber sealing ring (1016) that closes the inner barrel flange (1021) or the bottom of the inner barrel (1).

2. The hole-free inner barrel water switch assembly according to claim 1, characterized in that: The fixed bevel ring (1012) is provided with a first inner annular surface (10121) and a first guiding bevel (10122), while the relatively movable bevel ring (1013) is provided with a second rotating annular surface (10131) and a second guiding bevel (10132), the second rotating annular surface (10131) is rotationally matched with the first inner annular surface (10121), and the second guiding bevel (10132) is matched with the first guiding bevel (10122).

3. The hole-free inner barrel water switch assembly according to claim 1 or 2, characterized in that: The fixed bevel ring (1012) is also provided with a first vertical guide rib (10124), and the push plate ring (1015) is correspondingly provided with a first guide groove (10151) to cooperate therewith, so that the push plate ring (1015) can only move up and down along the first vertical guide rib (10124) when it is lifted by rotating with the movable bevel ring (1013).

4. The hole-free inner barrel water switch assembly according to claim 1, characterized in that: The rubber sealing ring (1016) has a corrugated structure, and the top of the rubber sealing ring (1016) can extend upward when the push plate ring (1015) is lifted.

5. The hole-free inner barrel water switch assembly according to claim 1, characterized in that: The force-applying device comprises a steel cable assembly (1017), and the steel cable assembly (1017) can pull the movable bevel ring (1013) to rotate under the action of an external traction device. A first return spring (1018) is arranged between the movable bevel ring (1013) and the fixed bevel ring (1012), and the movable bevel ring (1013) can be returned to its original position under the action of the first return spring (1018) after the force-applying device loses its force.

6. The hole-free inner barrel water switch assembly according to claim 5, characterized in that: The steel cable assembly (1017) comprises a steel cable (10171) and a steel cable sleeve (10174) which is movable thereon. The two ends of the steel cable (10171) each have an end structure, namely a steel cable front end head (10172) and a steel cable rear end head (10176). The steel cable front end head (10172) is fixed on the movable inclined surface ring (1013). The steel cable rear end head (10176) is fixed to a buffer spring (10177). The buffer spring (10177) is connected to a traction device connection structure (10178). ) is connected, the traction device connection structure (10178) is used to connect an external traction device, the two ends of the steel cable sleeve (10174) are respectively fixed with a steel cable sleeve front end fixing seat (10173) and a steel cable sleeve rear end fixing seat (10175), the steel cable sleeve front end fixing seat (10173) is fixed on the fixed bevel ring (1012), and the steel cable (10171) and the steel cable sleeve (10174) are fixed to the outside of the bottom of the outer barrel (2) through the steel cable sleeve rear end fixing seat (10175) after passing through the bottom of the outer barrel.

7. The hole-free inner barrel water switch assembly according to claim 1, characterized in that: One or more drainage holes (1029) are arranged at a preset distance relative to the central axis of the inner barrel (1), and a normally closed one-way valve (1020) is arranged on each drainage hole (1029), or the opening and closing of the plurality of drainage holes (1029) are controlled by one normally closed one-way valve (1020).

8. The hole-free inner barrel water switch assembly according to claim 1, characterized in that: The normally closed one-way valve (1020) includes a valve plug support seat (1028), which is fixedly mounted on the bottom of the inner barrel flange (1021), with its center extending to the middle of the drain hole (1029), and a valve plug fixing ring (1026) is fixedly mounted thereon, and a through hole is provided inside the valve plug fixing ring (1026), through which a valve plug rod (1025) is movably passed, and a valve plug movable ring (1023) is fixed to the end of the valve plug rod (1025) through a fixing nut (1022), and a second return spring (1027) is provided between the valve plug fixing ring (1026) and the valve plug movable ring (1023), and the second return spring (1027) is sleeved on the valve plug rod (1025), and a rubber valve plug (1024) is fixed to the other end of the valve plug rod (1025), which is sealed and matched with the drain hole (1029) under the action of the second return spring (1027).

9. A washing machine, characterized in that: It comprises an outer barrel (2) and an inner barrel (1), wherein the inner barrel (1) is concentrically sleeved inside the outer barrel (2), and a hole-free inner barrel water switch assembly as claimed in any one of claims 1 to 8 is arranged at the bottom of the inner barrel (1).

10. The washing machine according to claim 9, characterized in that: The outer barrel (2) is provided with two drain ports at the bottom, namely an outer drain port (3) and an inner drain port (6), wherein the inner drain port (6) is connected to the water passage (1011), the outer drain port (3) is provided at the bottom of the outer barrel (2) outside the water passage (1011), the inner drain port (6) is connected to the normally closed port of the drain valve (4), and the outer drain port (3) is connected to the normally open end of the drain valve (4).

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