A washing machine without water between inner and outer drums

Abstract

The application discloses a washing machine without water between inner and outer barrels, which comprises an inner barrel for containing washing water and a sealing structure, the bottom of the inner barrel is provided with a drain hole and a sliding rail, the sealing structure comprises a sealing plug and a sliding block for sliding the sealing plug to open or close the drain hole, the sliding block is in sliding cooperation with the sliding rail, the sliding rail is provided with a limiting structure for cooperating with the sliding block and limiting the position of the sliding block, and the limiting structure is used for keeping the drain hole in an open state or a closed state; the limiting structure can ensure that the drain hole is in the open state or the closed state, prevent the open and closed states of the drain hole from being confused, accurately open or close the drain hole, realize normal water drainage of the drain hole and normal water inflow of the inner barrel, and make the water in the inner barrel be completely drained and the water in the inner barrel not leak.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of household appliances, in particular, relates to a washing machine without water between inner and outer drums. BACKGROUND

[0002] A washing machine without water between inner and outer drums has no hole on the wall of the inner drum, so that only water is in the inner drum during washing, which can avoid water storage between the inner and outer drums of the washing machine with water between the inner and outer drums, avoid breeding of dirt between the inner and outer drums, avoid clothes pollution, and thus improve washing effect.

[0003] A pulsator washing machine without water between inner and outer drums on the market includes an inner drum for containing washing water and a sealing structure, the inner drum bottom is provided with a drain hole and a sliding rail, the sealing structure includes a sealing plug, a sliding block for driving the sealing plug to slide to open or close the drain hole, a spring member is arranged on the sliding block, the spring member is connected with the inner drum bottom to provide a reset force for the sliding block, the sliding block drives the sealing plug to slide to open the drain hole under the action of centrifugal force generated by rotation of the inner drum, and the sliding block drives the sealing plug to slide to close the drain hole under the action of the elastic member. Since no limiting structure for limiting the position of the sliding block is arranged on the washing machine, the drain hole will be automatically closed after being opened for a short time due to the decrease of rotation speed of the inner drum or the stop of rotation of the inner drum, so that the water in the inner drum cannot be completely drained, and the drain hole cannot be completely closed when the drain hole is closed, so that water leakage occurs at the drain hole when the inner drum is filled with water. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the deficiencies in the prior art, and to provide a washing machine without water between inner and outer drums, which can ensure that the drain hole is in an open state or a closed state by arranging a limiting structure on the sliding rail, prevent the drain hole from being opened and closed in disorder, accurately open or close the drain hole, achieve normal drainage of the drain hole and normal filling of the inner drum, and achieve the purposes of completely draining the water in the inner drum and preventing water leakage in the inner drum.

[0005] To solve the above technical problems, the basic idea of the technical solution of the present application is as follows:

[0006] The present application provides a washing machine without water between inner and outer drums, which includes an inner drum for containing washing water and a sealing structure, the inner drum bottom is provided with a drain hole and a sliding rail, the sealing structure includes a sealing plug, and a sliding block for driving the sealing plug to slide to open or close the drain hole, the sliding block is in sliding cooperation with the sliding rail, a limiting structure for limiting the position of the sliding block is arranged on the sliding rail in cooperation with the sliding block, and is used for keeping the drain hole in an open state or a closed state.

[0007] Further, the slide rail is annular, and the slide rail comprises a first segment and a second segment, the slide block is in sliding cooperation with the first segment to open the drain hole, the slide block is in cooperation with the second segment to close the drain hole, the sliding direction of the slide block on the two segments is opposite, and the end of the first segment and / or the end of the second segment is provided with a limiting structure.

[0008] Further, the first segment comprises a first part and a second part, the slide block is in sliding cooperation with the first part to open the drain hole for washing and draining, the slide block is in sliding cooperation with the second part to continuously open the drain hole for dewatering and draining, and the end of the first part and / or the end of the second part is provided with a limiting structure.

[0009] Further, the limiting structure is a limiting protrusion protruding from the slide rail towards the slide block, the slide block switches sliding between the slide rail and the limiting protrusion, and the end of the limiting protrusion forms a blocking surface in the sliding direction of the slide block, the blocking surface blocks the slide block and prevents the slide block from returning along the original path.

[0010] Further, the protruding size of the limiting protrusion in the sliding direction of the slide block gradually increases, and the end of the limiting protrusion forms a maximum blocking surface in the sliding direction.

[0011] Further, the slide block can be elastically deformed in a direction perpendicular to the sliding direction of the slide block, the slide block jumps from the slide rail to the limiting protrusion, slides on the limiting protrusion in a compressed state, the slide block jumps from the limiting protrusion to the slide rail, and the limiting protrusion is stretched to abut against the maximum blocking surface.

[0012] Further, the slide block is provided with a receiving groove, the groove opening of the receiving groove is arranged towards the slide rail, a limiting column capable of extending out of or retracting into the receiving groove through the groove opening of the receiving groove is arranged in the receiving groove, and the limiting column is used to abut against the maximum limiting surface.

[0013] Further, an elastic member is arranged in the receiving groove, one end of the elastic member is embedded in the receiving groove through the groove opening of the receiving groove and connected with the groove bottom of the receiving groove, and the other end is connected with the limiting column.

[0014] Further, the washing machine further comprises a detection device, the detection device comprises a detection element and a detected element, the detection element is arranged on other components of the washing machine, the detected element is arranged on the slide block, the detection element can detect the detected element, the drain hole is in an open state, the detection element does not detect the detected element, and the drain hole is in a closed state.

[0015] Further, the slide block has a first limiting position between the first part and the limiting structure, and has a second limiting position between the second part and the limiting structure, the washing machine further comprises an outer tub with an inner tub arranged inside, and the detection element is arranged on the corresponding outer tub wall between the first limiting device and the second limiting device.

[0016] Compared with the prior art, the present application has the following beneficial effects.

[0017] By arranging the limiting structure on the slide rail, the limiting structure can ensure that the drainage hole is in the open state or the closed state, prevent the drainage hole from being opened and closed in disorder, and more accurately open or close the drainage hole, so that the normal drainage of the drainage hole and the normal water inflow of the inner drum are realized, the water in the inner drum can be completely drained, and the water in the inner drum does not leak.

[0018] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which are part of the present application, serve to provide a further understanding of the present application, and the illustrative embodiments of the present application and their descriptions serve to explain the present application, but do not constitute an improper limitation on the present application. Obviously, the accompanying drawings described below are only some embodiments, and other drawings can be obtained from these drawings by those of ordinary skill in the art without creative labor.

[0020] Figure 1 A structure diagram of a washing machine without water between the inner drum and the outer drum is provided for the embodiments of the present application.

[0021] Figure 2 A front view of the washing machine is provided for the embodiments of the present application.

[0022] Figure 3 A top view of the washing machine when the limiting column is in position A or D is provided for the embodiments of the present application.

[0023] Figure 4 A top view of the washing machine when the limiting column is in position B is provided for the embodiments of the present application.

[0024] Figure 5 A top view of the washing machine when the limiting column is in position C is provided for the embodiments of the present application.

[0025] Figure 6 A schematic diagram of the sliding of the sliding block on the slide rail is provided for the embodiments of the present application.

[0026] Figure 7 A structure diagram of the sliding block is provided for the embodiments of the present application.

[0027] In the figure: 1 - inner barrel; 11 - drain hole; 12 - slide rail; 121 - first section of slide rail; 1211 - first part; 1212 - second part; 122 - second section of slide rail; 13 - inner barrel bottom; 2 - sealing structure; 211 - sealing plug; 22 - sliding block; 221 - accommodating groove; 222 - elastic member; 2221 - compression spring; 223 - limiting column; 3 - limiting structure; 31 - first limiting protrusion; 312 - first blocking surface; 32 - second limiting protrusion; 322 - second blocking surface; 33 - third limiting protrusion; 332 - third blocking surface; 4 - detection device; 41 - detection element; 411 - reed switch; 42 - detected element; 421 - first magnet; 422 - second magnet; 6 - outer barrel; 61 - outer barrel wall; 7 - return spring.

[0028] It should be noted that the drawings and the written description are not intended to limit the scope of the present application in any way, but are merely to illustrate the concept of the present application to those skilled in the art. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments will be described clearly and completely below with reference to the drawings of the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0030] In the description of the present application, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0031] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] EMBODIMENT

[0033] As Figures 1-6As shown, the present invention provides a washing machine with no water between the inner and outer tubs, including an inner tub 1 for holding washing water and a sealing structure 2. The bottom 13 of the inner tub is provided with a drain hole 11 and a slide rail 12. The sealing structure 2 includes a sealing plug 211 and a slider 22 that drives the sealing plug 211 to slide to open or close the drain hole 11. The slider 22 is slidably engaged with the slide rail 12. The slide rail 12 is provided with a limiting structure 3 that engages with the slider 22 and limits the position of the slider 22, for keeping the drain hole 11 in an open or closed state.

[0034] In the embodiments of the present invention, by providing a limiting structure 3 on the slide rail 12, the limiting structure 3 can ensure that the drain hole 11 is in an open or closed state, prevent the drain hole 11 from opening and closing in a confused manner, and can open or close the drain hole 11 more accurately, so as to realize the normal drainage of the drain hole 11 and the normal water intake of the inner tub 1, so that the water in the inner tub 1 can be drained clean and the water in the inner tub 1 does not leak.

[0035] The washing machine is a waterless washing machine with no water between the inner and outer tubs. The inner tub 1 is a water-holding tub with a drain hole 11 at the bottom 13 of the inner tub. A sealing valve is provided at the drain hole 11, and a sealing plug 211 is provided inside the sealing valve. The sealing plug 211 is connected to the slider 22 via a connecting rod. The slider 22 is connected to the bottom 13 of the inner tub via a return spring 7, which provides force for the slider 22 to return to its original position. The slide rail 12 protrudes relative to the bottom 13 of the inner tub and is grooved. The slider 22 is embedded in the groove of the slide rail 12 and slides in the groove along the extension direction of the groove, which restricts the sliding direction of the slider 22. When water is added during washing, the sealing plug 211 closes the drain hole 11. When water is drained during washing and spin-drying, the inner tub 1 rotates and generates centrifugal force. Under the action of centrifugal force, the slider 22 drives the sealing plug 211 to move and open the drain hole 11. The inner tub 1 stops rotating, and the slider 22 returns to its original position under the action of the return spring 7, driving the sealing plug 211 to move and close the drain hole 11.

[0036] like Figures 3-5 As shown, in an embodiment of the present invention, the slide rail 12 is annular, and the slide rail includes a first slide rail 121 and a second slide rail 122. The slider 22 is slidably engaged with the first slide rail 121 to open the drain hole 11, and the slider 22 is engaged with the second slide rail 122 to close the drain hole 11. The slider 22 slides in opposite directions on the two slide rails. A limiting structure 3 is provided on the end of the first slide rail 121 and / or the end of the second slide rail 122.

[0037] In an embodiment of the present invention, the slide rail 12 is annular, and the slider 22 slides circumferentially on the slide rail 12, starting from the starting position and returning to the starting position.

[0038] The first slide rail 121 is provided with a limiting structure 3, and the second slide rail 122 is provided with an upper limiting structure 3, or both the first slide rail 121 and the second slide rail 122 are provided with limiting structures 3.

[0039] Preferably, the first section of slide rail 121 is provided with a limiting structure 3, and the second section of slide rail 122 is provided with a limiting structure 3, that is, the drainage hole 11 can be kept in an open state or a closed state.

[0040] When draining water, the inner tub 1 rotates, the sliding block 22 slides in a direction on the first section of slide rail 121 under the action of centrifugal force, the reset spring 7 is elastically deformed, the sliding block 22 drives the sealing plug 211 to slide, and the purpose is to open the drainage hole 11. The limiting structure 3 on the first section of slide rail 121 limits the position of the sliding block 22. During water drainage, the opening state of the drainage hole 11 can be maintained, and the drainage hole 11 is kept open for a period of time, so that the water in the inner tub 1 can be completely drained.

[0041] When the water in the inner tub 1 is completely drained, the inner tub stops rotating, the centrifugal force disappears, the sliding block 22 jumps from the first section of slide rail 121 to the second section of slide rail 122, and the sliding block 22 slides in the opposite direction on the second section of slide rail 122 under the action of the reset force of the reset spring 7 until it returns to the initial position. The sliding block 22 drives the sealing plug 211 to reset to the initial position, and the purpose is to close the drainage hole 11. The limiting structure 3 on the second section of slide rail 122 limits the position of the sliding block 22. When the inner tub 1 is filled with water, the closed state of the drainage hole 11 can be maintained, so that the water in the inner tub 1 does not leak.

[0042] As shown in FIG. 1, Figures 3-5 In the embodiment of the present application, the first section of slide rail 121 includes a first part 1211 and a second part 1212. The sliding block 22 is in sliding cooperation with the first part 1211 to open the drainage hole 11 for washing and draining water. The sliding block 22 is in sliding cooperation with the second part 1212 to continue to open the drainage hole 11 for dehydrating and draining water. The end of the first part 1211 and / or the end of the second part 1212 is provided with a limiting structure 3.

[0043] In the embodiment of the present application, since the water drainage of the drainage hole 11 includes washing and dehydrating after washing, the first section of slide rail 121 is divided into a first part 1211 and a second part 1212.

[0044] The first part 1211 is provided with a limiting structure 3, and the second part 1212 is provided with a limiting structure 3, or the first part 1211 is provided with a limiting structure 3, and the second part 1212 is provided with a limiting structure 3.

[0045] Preferably, the first part 1211 is provided with a limiting structure 3, the second part 1212 is provided with a limiting structure 3, and the second section of slide rail 122 is provided with a limiting structure 3.

[0046] As shown in FIG. 1, Figures 3-5As shown, position A is the initial position, position B is the position where the limiting structure 3 of the first part 1211 limits the slider 22, position C is the position where the limiting structure 3 of the second part 1212 limits the slider 22, and position D is the position where the limiting structure 3 of the second section slide rail 122 limits the slider 22, which coincides with the initial position.

[0047] During washing and draining, the inner tub 1 rotates, and the slider 22 slides from position A to position B at the end of the first part 1211 under the action of centrifugal force. The drain hole 11 is in the open state, and the opening degree is the first opening degree. Since the power is cut off to the inner tub 1 at position B, the inner tub 1 stops rotating. Therefore, in order to keep the drain hole 11 in the open state as described above, the limiting structure 3 needs to restrict the slider 22 to position B. The drain hole 11 starts washing and draining at position B, and the limiting structure 3 keeps the drain hole 11 in the open state until the washing and draining of the drain hole 11 is completed.

[0048] During the spin-drying and draining process, the inner tub 1 rotates, and the centrifugal force gradually increases, which is greater than the centrifugal force during washing and draining. Under the action of the relatively large centrifugal force, the slider 22 slides from position B to position C at the end of the second part 1212. The drain hole 11 continues to open, and the opening degree is the second opening degree, which is greater than or equal to the first opening degree. During the process of the slider 22 sliding from position B to position C, the drain hole 11 spin-dries and drains. When the slider 22 slides to position C, the spin-drying and draining of the drain hole 11 ends, and the inner tub 1 gradually stops rotating. In order to drain the water in the inner tub 1, the limiting structure 3 needs to restrict the slider 22 to position C. The limiting structure 3 keeps the drain hole 11 in the open state until the inner tub 1 stops rotating for a period of time.

[0049] After the washing and centrifugal drainage are completed, the inner tub 1 stops rotating, the centrifugal force disappears, and the slider 22 jumps from position C to the second slide rail 122. Under the action of the return force of the return spring 7, the slider 22 slides to position D, that is, to the initial position. When the slider 22 slides to position D, the sealing plug 211 closes the drain hole 11. In order to keep the drain hole 11 closed and prevent water from leaking out when the inner tub 1 is filled with water, the limiting structure 3 needs to keep the slider 22 in position D.

[0050] like Figures 3-6 As shown, in an embodiment of the present invention, the limiting structure 3 is a limiting protrusion formed by the slide rail protruding towards the slider 22. The slider 22 switches between the slide rail and the limiting protrusion. The end of the limiting protrusion forms a blocking surface in the sliding direction of the slider 22 to block the slider 22 and prevent the slider 22 from returning along the original path.

[0051] In the embodiment of the present application, the limiting structure 3 is a limiting protrusion, the limiting protrusion protrudes towards the sliding block 22 relative to the sliding rail, specifically, the first limiting protrusion 31 is arranged on the first part 1211, the second limiting protrusion 32 is arranged on the second part 1212, and the third limiting protrusion 33 is arranged on the second end sliding rail;

[0052] As shown in Figures 3-6 , the sliding block 22 slides from the first part 1211 to the first limiting protrusion 31, the first blocking surface 312 on the first limiting protrusion 31 abuts against the sliding block 22, blocks the sliding block 22 from returning to the first part 1211, and limits the sliding block 22 at the B position to avoid the drainage hole 11 from being closed;

[0053] The sliding block 22 slides from the first limiting protrusion 31 to the second part 1212, and then slides from the second part 1212 to the second limiting protrusion 32, the second blocking surface 332 on the second limiting protrusion 32 abuts against the sliding block 22, blocks the sliding block 22 from returning to the second part 1212, and limits the sliding block 22 at the C position to avoid the drainage hole 11 from being closed;

[0054] The sliding block 22 slides from the second limiting protrusion 32 to the second segment sliding rail 122, and then slides from the second segment sliding rail 122 to the third limiting protrusion 33, the third blocking surface 332 on the third limiting protrusion 33 abuts against the sliding block 22, blocks the sliding block 22 from returning to the third part, and limits the sliding block 22 at the D position to avoid the drainage hole 11 from being opened.

[0055] Specifically, the limiting protrusion extends along the sliding direction of the sliding block 22, the protruding size of the limiting protrusion along the sliding direction of the sliding block 22 gradually increases, so that the end of the limiting protrusion can form a relatively largest blocking surface, the blocking area of the sliding block 22 is increased, the blocking strength of the sliding block 22 is further increased, and the sliding block 22 is prevented from returning in the original direction; and the sliding block 22 is relatively easy to slide from the sliding rail to the limiting protrusion, the sliding of the sliding block 22 on the limiting protrusion is buffered, and the sliding block 22 is prevented from being unable to slide on the limiting protrusion.

[0056] As shown in Figure 6 and Figure 7 , in the embodiment of the present application, the sliding block 22 can be elastically deformed in a direction perpendicular to the sliding direction of the sliding block 22, the sliding block 22 jumps from the sliding rail to the limiting protrusion, and is in a compressed state when sliding on the limiting protrusion, the sliding block 22 jumps from the limiting protrusion to the sliding rail, and the limiting protrusion is elongated and abuts against the largest blocking surface.

[0057] In embodiments of the present invention, the slider 22 itself can generate elastic deformation, and the direction of elastic deformation is perpendicular to the sliding direction of the slider 22. Specifically, for example, when the slider 22 slides on the first limiting protrusion 31, the protrusion dimension of the first limiting protrusion 31 gradually increases along the sliding direction of the slider 22, so that the slider 22 is always in a compressed state. The slider 22 is gradually compressed. Since there is a height difference between the first limiting protrusion 31 and the second part 1212, when the slider 22 jumps from the end of the first limiting protrusion 31 to the second part 1212, the slider 22 elongates, and the slider 22 can abut against the maximum blocking surface to the maximum extent, increasing the blocking strength of the maximum blocking surface on the slider 22. The sliding mode of the slider 22 on other limiting protrusions is the same as the sliding mode on the first limiting protrusion 31.

[0058] Specifically, the slider 22 is provided with a receiving groove 221, the opening of the receiving groove 221 is set facing the slide rail, and a limiting post 223 is provided in the receiving groove 221 that can extend out of the receiving groove 221 or retract into the receiving groove 221 through the opening of the receiving groove 221. The limiting post 223 is used to abut against the maximum limiting surface.

[0059] An elastic element 222 is provided inside the receiving groove 221. One end of the elastic element 222 is embedded in the receiving groove 221 through the groove opening of the receiving groove 221 and is connected to the bottom of the receiving groove 221. The other end is connected to the limiting post 223.

[0060] Specifically, for example, when the slider 22 slides on the first limiting protrusion 31, the protrusion dimension of the first limiting protrusion 31 gradually increases along the sliding direction of the slider 22, causing the limiting post 223 to gradually retract into the receiving groove 221 under the action of the elastic member 222. Since there is a height difference between the first limiting protrusion 31 and the second part 1212, when the slider 22 jumps from the end of the first limiting protrusion 31 to the second part 1212, the limiting post 223 extends out of the receiving groove 221 under the action of the elastic member 222, and the limiting post 223 abuts against the maximum blocking surface; the elastic member 222 is a compression spring 2221.

[0061] like Figure 5 As shown, in an embodiment of the present invention, a detection device 4 is also included. The detection device 4 includes a detection element 41 and a detected element 4241. The detection element 41 is disposed on other parts of the washing machine, and the detected element 4241 is disposed on the slider 22. When the detection element 41 can detect the detected element 4241, the drain hole 11 is in an open state. When the detection element 41 does not detect the detected element 4241, the drain hole 11 is in a closed state.

[0062] In the embodiment of the present application, the detecting element 41 in the detecting device 4 can be a dry reed 411, and the detected element 41 can be a magnet. Since the drain hole 11 has an open state and a closed state, the open state of the drain hole 11 can be indicated by the fact that the dry reed 411 can detect the magnet, and the closed state of the drain hole 11 can be indicated by the fact that the dry reed 411 cannot detect the magnet.

[0063] Specifically, the sliding block 22 has a first limiting position between the first portion 1211 and the limiting structure 3, and has a second limiting position between the second portion 1212 and the limiting structure 3. The washing machine further comprises an outer tub 6 with the inner tub 1 arranged therein, and the detecting element 41 is arranged on the corresponding outer tub wall 61 between the first limiting device and the second limiting device.

[0064] Since the limiting structure 3 of the first portion 1211 and the limiting structure 3 of the second portion 1212 make the drain hole 11 in the open state during the sliding process of the sliding block 22 between the first limiting position (B position) and the second limiting position (C position), the dry reed 411 is arranged on the corresponding outer tub wall 61 between the first limiting device and the second limiting device to determine the position of the sliding block 22 by whether the magnet can be detected or not, so as to determine whether the drain hole 11 is open or not. If the magnet can be detected by the dry reed 411 all the time, the sliding block 22 is between the first limiting position and the second limiting position, and the drain hole 11 is in the open state. If the magnet cannot be detected by the dry reed 411, the sliding block 22 is in the third limiting position (D position), the sliding block returns to the initial position, and the drain hole 11 is in the closed state.

[0065] The first magnet 421 and the second magnet 422 are arranged on the sliding block 22, and the first magnet 421 and the second magnet 422 are oppositely arranged, so as to increase the detection accuracy.

[0066] The above description is only the preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as the above preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above-mentioned technical content without departing from the technical solution of the present application, and the equivalent embodiments with equivalent changes are equivalent to the above-mentioned technical content. Any simple modification, equivalent change and modification of the above-mentioned embodiments based on the technical essence of the present application are still within the scope of the present application.

Claims

1. A washing machine with no water between its inner and outer tubs, comprising an inner tub for holding washing water and a sealing structure, wherein the bottom of the inner tub is provided with a drain hole and a slide rail, and the sealing structure includes a sealing plug and a slider that drives the sealing plug to slide to open or close the drain hole, the slider slidingly engaging with the slide rail, characterized in that, The slide rail is equipped with a limiting structure that cooperates with the slider and restricts the position of the slider, so as to keep the drain hole in the open or closed state; The slide rail is ring-shaped and includes a first slide rail and a second slide rail. The slider slides with the first slide rail to open the drain hole, and the slider slides with the second slide rail to close the drain hole. The slider slides in opposite directions on the two slide rails. A limiting structure is provided at the end of the first slide rail and / or the end of the second slide rail. The first slide rail includes a first part and a second part. The slider slides with the first part to open the drain hole for washing and draining. The slider slides with the second part to continue to open the drain hole for dehydration and draining. A limiting structure is provided at the end of the first part and / or the end of the second part.

2. The washing machine with no water between the inner and outer tubs according to claim 1, characterized in that, The limiting structure is a limiting protrusion formed by the slide rail extending towards the slider. The slider switches between the slide rail and the limiting protrusion. The end of the limiting protrusion forms a blocking surface in the sliding direction of the slider to block the slider and prevent the slider from returning along the original path.

3. The washing machine with no water between the inner and outer tubs according to claim 2, characterized in that, The protrusion dimension of the limiting protrusion gradually increases along the sliding direction of the slider, and the end of the limiting protrusion forms the maximum blocking surface in the sliding direction.

4. The washing machine with no water between the inner and outer tubs according to claim 3, characterized in that, The slider can produce elastic deformation in a direction perpendicular to its sliding direction. The slider jumps from the slide rail to the limiting protrusion and slides on the limiting protrusion in a compressed state. The slider jumps from the limiting protrusion to the slide rail, and the limiting protrusion extends and abuts against the maximum blocking surface.

5. The washing machine with no water between the inner and outer tubs according to claim 4, characterized in that, The slider is provided with a receiving groove, the opening of the receiving groove is set facing the slide rail, and a limiting post is provided in the receiving groove that can extend out of the receiving groove or retract into the receiving groove through the opening of the receiving groove. The limiting post is used to abut against the maximum limiting surface.

6. The washing machine with no water between the inner and outer tubs according to claim 5, characterized in that, An elastic element is provided inside the receiving groove. One end of the elastic element is embedded in the receiving groove through the groove opening and connected to the bottom of the receiving groove, while the other end is connected to the limiting post.

7. The washing machine with no water between the inner and outer tubs according to any one of claims 1-6, characterized in that, It also includes a detection device, which includes a detection element and a detected element. The detection element is located on other parts of the washing machine, and the detected element is located on the slider. When the detection element can detect the detected element, the drain hole is in the open state. When the detection element does not detect the detected element, the drain hole is in the closed state.

8. The washing machine with no water between the inner and outer tubs according to claim 7, characterized in that, The slider has a first limiting position between the first part and the limiting structure, and the slider has a second limiting position between the second part and the limiting structure. The washing machine also includes an outer tub with an inner tub inside, and the detection element is disposed on the outer tub wall corresponding to the first limiting device and the second limiting device.

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