Inner drum cover, inner drum assembly and drum washing machine

Abstract

The present invention discloses an inner drum cover, an inner drum assembly and a drum washing machine, wherein the inner drum cover comprises a mounting surface surrounding the axis of the inner drum cover, and a sealing portion surrounding the mounting surface and having elasticity is provided on the mounting surface. The present invention improves the sealing effect of the inner drum cover on the inner drum introduction port by providing the sealing portion, so that the washing water in the inner drum will not flow out from the inner drum introduction port during the washing process, thereby preventing the washing water in the inner drum from splashing onto the inner wall of the outer drum, and improving the cleanliness of the inner wall of the outer drum.

Description

Technical Field

[0001] The invention belongs to the field of household appliances, and in particular relates to an inner drum cover, an inner drum assembly and a drum washing machine. Background Art

[0002] A washing machine generally refers to a washing device that uses electricity and mechanical action to remove dirt from laundry. A drum washing machine refers to a washing machine that puts laundry, washing water and washing powder into a horizontally installed inner drum, rotates the inner drum using the driving force of a motor, and washes by friction between the inner drum and the laundry. The characteristics of a drum washing machine are that it does not damage the laundry, the laundry does not get tangled with each other, and it can achieve the effect of rubbing and washing.

[0003] In the existing drum washing machine, the inner drum cover has a poor sealing effect on the inner drum inlet, so that the washing water in the inner drum flows out from the inner drum inlet during the washing process, and then the washing water in the inner drum splashes onto the inner wall of the outer drum, resulting in poor cleanliness of the inner wall of the outer drum.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] The first technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an inner cylinder cover to solve the technical problem that the inner cylinder cover has a poor sealing effect on the inner cylinder introduction port.

[0006] The second technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an inner drum assembly to solve the technical problem that the washing water in the inner drum flows out from the inner drum delivery port during the washing process.

[0007] The third technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a drum washing machine to solve the technical problem of poor cleanliness of the inner wall of the outer drum.

[0008] In order to solve the above-mentioned first technical problem, the basic concept of the technical solution adopted by the present invention is:

[0009] An inner cylinder cover comprises a mounting surface surrounding the axis of the inner cylinder cover, and a sealing part surrounding the mounting surface and having elasticity is arranged on the mounting surface.

[0010] Furthermore, the mounting surface includes a first mounting surface and / or a second mounting surface, the first mounting surface is cylindrical in shape with a radial cross section perpendicular to the axis of the inner cylinder cover, the second mounting surface is annular in shape with a plane perpendicular to the axis of the inner cylinder cover, and the sealing portion includes a first sealing portion arranged corresponding to the first mounting surface and / or a second sealing portion arranged corresponding to the second mounting surface.

[0011] Furthermore, the first sealing portion has at least one protruding sealing rib surrounding the first sealing portion on one side away from the first mounting surface, and the sealing rib is gradually inclined toward the direction in which the inner cylinder cover is opened;

[0012] Preferably, the sealing rib is in a tapered shape that gradually contracts toward the protruding end.

[0013] Furthermore, the first mounting surface is a conical surface that gradually expands toward the direction in which the inner cylinder cover opens.

[0014] Furthermore, one side of the inner cylinder cover in the axial direction has a protruding boss, the outer wall surface of the boss constitutes a first mounting surface, and the outer peripheral surface of the boss constitutes a second mounting surface.

[0015] In order to solve the above second technical problem, the basic concept of the technical solution adopted by the present invention is:

[0016] An inner cylinder assembly comprises an inner cylinder, wherein a delivery port is provided on the inner cylinder, and an inner cylinder cover as described above is installed at the delivery port, wherein the installation surface is in sealing contact with the inner wall surface and / or the outer peripheral surface of the delivery port via a sealing portion.

[0017] Furthermore, the first installation surface is in sealing contact with the inner wall surface of the delivery port via the first sealing portion, and the second installation surface is in sealing contact with the outer peripheral surface of the delivery port via the second sealing portion.

[0018] Furthermore, the inner wall surface of the delivery port is a conical surface that gradually expands toward the outside of the inner tube;

[0019] Preferably, the inner tube has a protruding delivery portion, the delivery port is arranged on the delivery portion, the protruding end of the delivery portion is folded outward to form an arc-shaped flange, and the second mounting surface is in sealing contact with the arc-shaped flange via the second sealing portion.

[0020] In order to solve the third technical problem, the basic concept of the technical solution adopted by the present invention is:

[0021] A drum washing machine comprises any one of the inner drum components described above.

[0022] Furthermore, the drum washing machine also includes an outer drum which is sleeved on the outer side of the inner drum, the outer drum is provided with an opening, and the introduction port and the opening are arranged to overlap in the axial direction of the inner drum.

[0023] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art:

[0024] The present invention improves the sealing effect of the inner drum cover on the inner drum introduction port by arranging a sealing portion, so that the washing water in the inner drum will not flow out from the inner drum introduction port during the washing process, thereby preventing the washing water in the inner drum from splashing onto the inner wall of the outer drum, and improving the cleanliness of the inner wall of the outer drum.

[0025] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the accompanying drawings:

[0027] Figure 1 is a front view of an inner cylinder assembly in one embodiment of the present invention;

[0028] Figure 2 is a left side view of an inner cylinder assembly in one embodiment of the present invention;

[0029] Figure 3 is an oblique view of an inner cylinder assembly in one embodiment of the present invention;

[0030] Figure 4 is a cross-sectional view of an inner cylinder delivery port in an inner cylinder assembly according to an embodiment of the present invention;

[0031] Figure 5 is a schematic structural diagram of a drum washing machine in one embodiment of the present invention;

[0032] Figure 6 yes Figure 5 The enlarged schematic diagram at A in the middle;

[0033] Figure 7 yes Figure 5 Enlarged schematic diagram of point B in the middle.

[0034] Description of the main components in the figure: 1. Shell; 10. Door; 2. Outer cylinder; 20. Outer cylinder cover; 21. Spring; 22. First connection end; 23. Rolling device; 24. Telescopic tube; 3. Inner cylinder; 30. Inner cylinder cover; 301. First mounting surface; 302. Second mounting surface; 303. Accommodating groove; 304. Door lock structure; 305. Door shaft structure; 306. Door handle; 307. First limiting convex; 308. Second limiting convex; 31. Second connection end; 32. The delivery port; 33, the delivery part; 34, the arc-shaped flange; 4, the driving device; 40, the water inlet channel; 41, the motor shaft; 42, the connecting piece; 5, the water inlet valve; 6, the detergent delivery device; 7, the heating device; 8, the drain pump; 9, the lifting rib; 90, the shell; 91, the valve plug; 92, the weight; 93, the second through hole; 94, the water collecting device; 95, the elastic member; 100, the first sealing part; 101, the sealing rib; 102, the second sealing part; 103, the fixing part.

[0035] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0037] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] like Figure 1-7 As shown, the embodiment of the present invention introduces an inner cylinder cover 30, which includes a mounting surface surrounding the axis of the inner cylinder cover 30, and a sealing portion surrounding the mounting surface and having elasticity is provided on the mounting surface.

[0040] The present invention improves the sealing effect of the inner drum cover 30 on the inner drum 3 loading port 32 by providing a sealing portion, so that the washing water in the inner drum 3 will not flow out from the inner drum 3 loading port 32 during the washing process, thereby preventing the washing water in the inner drum 3 from splashing onto the inner wall of the outer drum, thereby improving the cleanliness of the inner wall of the outer drum.

[0041] Among them, the inner drum cover 30 is used to open and close the inner drum 3 loading port 32 of the drum washing machine. The inner drum 3 loading port 32 is used to put clothes into the inner drum 3. When the inner drum cover 30 is opened, the inner drum 3 loading port 32 is open, and when the inner drum cover 30 is closed, the inner drum 3 loading port 32 is closed; the sealing part is a material or part that prevents fluid or solid particles from leaking from adjacent joint surfaces and prevents external impurities such as dust and moisture from invading the internal parts of the machine and equipment. The sealing part is made of rubber; when the inner drum cover 30 is closed, the mounting surface is in sealing contact with the inner wall surface of the loading port 32 and / or the outer peripheral surface of the loading port 32 through the sealing part, and when in sealing contact, the sealing part is in an extruded state.

[0042] See also Figure 4In this embodiment, the mounting surface includes a first mounting surface 301 and / or a second mounting surface 302, the first mounting surface 301 is cylindrical in shape with a radial cross section perpendicular to the axis of the inner cylinder cover 30, the second mounting surface 302 is annular in shape with a plane perpendicular to the axis of the inner cylinder cover 30, and the sealing portion includes a first sealing portion 100 arranged corresponding to the first mounting surface 301 and / or a second sealing portion 102 arranged corresponding to the second mounting surface 302.

[0043] The present invention achieves sealing of the delivery port 32 of the inner tube 3 by providing the first sealing portion 100 and / or the second sealing portion 102 .

[0044] When the inner tube cover 30 is closed, the first mounting surface 301 sinks into the inner tube 3 delivery port 32, the first mounting surface 301 and the inner wall surface of the inner tube 3 delivery port 32 are overlapped in the radial direction of the inner tube 3 delivery port 32, the second mounting portion and the inner wall surface of the inner tube 3 delivery port 32 and / or the outer peripheral surface of the inner tube 3 delivery port 32 are overlapped in the axial direction of the inner tube 3 delivery port 32, the first mounting surface 301 is in sealing contact with the inner wall surface of the delivery port 32 via the first sealing portion 100, and the second mounting surface 302 is in sealing contact with the outer peripheral surface of the delivery port 32 via the second sealing portion 102.

[0045] See also Figure 4 In this embodiment, the first sealing portion 100 has at least one protruding sealing rib 101 surrounding the first sealing portion 100 on one side away from the first mounting surface 301, and the sealing rib 101 gradually inclines toward the direction in which the inner cylinder cover 30 is opened; preferably, the sealing rib 101 is a cone that gradually shrinks toward the protruding end.

[0046] The present invention provides the sealing rib 101, thereby ensuring the sealing of the introduction opening 32 of the inner cylinder 3 and making the opening and closing of the inner cylinder cover 30 more labor-saving.

[0047] Among them, the sealing rib 101 gradually tilts toward the direction of opening the inner cylinder cover 30, that is, the sealing rib 101 gradually tilts toward the side of the inner cylinder cover 30 facing the user. When the inner cylinder 3 is closed, the protruding end of the sealing rib 101 is in sealing contact with the inner wall surface of the delivery port 32. At this time, the annular diameter of the protruding end of the sealing rib 101 is larger than the corresponding annular diameter of the inner wall surface of the delivery port 32.

[0048] See also Figure 4 In this embodiment, the first mounting surface 301 is a conical surface that gradually expands toward the direction in which the inner cylinder cover 30 is opened. The first mounting surface 301 gradually expands toward the direction in which the inner cylinder cover 30 is opened, that is, the first mounting surface 301 gradually expands toward the side of the inner cylinder cover 30 facing the user, and the first mounting surface 301 is a conical cylinder.

[0049] See also Figure 4In this embodiment, one side of the inner cylinder cover 30 in the axial direction has a protruding boss, the outer wall surface of the boss constitutes a first mounting surface 301, and the outer peripheral surface of the boss constitutes a second mounting surface 302. The one side of the inner cylinder cover 30 in the axial direction is the side of the inner cylinder cover 30 facing the introduction port 32 of the inner cylinder 3.

[0050] See also Figure 4 In this embodiment, a radially protruding first limiting protrusion 307 surrounding the boss is provided on the boss, and the first limiting protrusion 307 is in sealing contact with the first sealing portion 100. A protruding second limiting protrusion 308 surrounding the boss is provided on the outer peripheral surface of the boss, and the second limiting protrusion 308 is in sealing contact with the second sealing portion 102.

[0051] See also Figure 4 In this embodiment, the first sealing portion 100 and the second sealing portion 103 are both part of a sealing structure, that is, the sealing structure includes the first sealing portion 100 and the second sealing portion 103, and the sealing structure is an independent component and is installed on the inner cylinder cover 30, or the sealing structure is injection molded on the inner cylinder cover 30.

[0052] See also Figure 4 In this embodiment, the outer peripheral surface of the boss is provided with a receiving groove 303 surrounding the delivery port 32, and the sealing structure includes a fixing portion 103 surrounding the receiving groove 303, sunk into the receiving groove 303 and in sealing contact with the inner wall surface of the receiving groove 303.

[0053] like Figure 1-7 As shown, an embodiment of the present invention further introduces an inner cylinder 3 assembly, including an inner cylinder 3, on which is provided a delivery port 32, at which is installed an inner cylinder cover 30 as described above, and the installation surface is in sealing contact with the inner wall surface of the delivery port 32 and / or the outer peripheral surface of the delivery port 32 through a sealing portion.

[0054] See also Figure 4 In this embodiment, the first mounting surface 301 is in sealing contact with the inner wall surface of the delivery port 32 via the first sealing portion 100 , and the second mounting surface 302 is in sealing contact with the outer peripheral surface of the delivery port 32 via the second sealing portion 102 .

[0055] See also Figure 4 In this embodiment, the inner wall surface of the delivery port 32 is a tapered surface that gradually expands toward the outside of the inner tube 3. That is, the inner wall surface of the delivery port 32 is a tapered cylindrical surface corresponding to the first mounting surface 301, and when the sealing ribs 101 include a plurality of sealing ribs, the protruding ends of all the sealing ribs 101 are on the tapered cylindrical surface corresponding to the inner wall surface of the delivery port 32.

[0056] See also Figure 4In this embodiment, the inner tube 3 has a protruding delivery portion 33, the delivery port 32 is arranged on the delivery portion 33, the protruding end of the delivery portion 33 is folded outward to form an arc-shaped flange 34, and the second mounting surface 302 is in sealing contact with the arc-shaped flange 34 through the second sealing portion 102.

[0057] The present invention improves the sealing effect of the introduction port 32 of the inner tube 3 by providing the arc-shaped flange 34 , and the arc-shaped flange 34 has no edges and corners, thereby avoiding crushing the second sealing portion 102 .

[0058] like Figure 5-7 As shown, an embodiment of the present invention introduces a drum washing machine, which includes an inner drum 3 assembly as described above.

[0059] See also Figure 5 In this embodiment, the drum washing machine further comprises an outer drum mounted on the outside of the inner drum 3 , the outer drum is provided with an opening, and the introduction port 32 and the opening are overlapped in the axial direction of the inner drum 3 .

[0060] Among them, the delivery port 32 and the open port are arranged to overlap in the axial direction of the inner tube 3, that is, the delivery port 32 is arranged on the first side of the inner tube 3 in the axial direction, the axes of the outer tube and the inner tube 3 extend in the same direction, and the open port is arranged on one side of the outer tube in the axial direction, close to the first side of the inner tube 3, and is arranged corresponding to the delivery port 32; more specifically, the inner tube 3 and the outer tube both include a cylindrical side wall with an axis extending forward and backward and a bottom wall at the rear end of the closed side wall, the delivery port 32 is arranged on the front side of the inner tube 3, and the open port is arranged on the front side of the outer tube, and is arranged corresponding to the delivery port 32.

[0061] See also Figure 1-3 In this embodiment, the bottom of the inner cylinder cover 30 is rotatably mounted with the inner cylinder 3 via the door shaft structure 305, and the top of the inner cylinder cover 30 is locked and connected with the inner cylinder 3 via the door lock structure 304. That is, the inner cylinder cover 30 is installed on the inner cylinder 3, and the inner cylinder cover 30 is turned outward to open and turned back to close. The inner cylinder cover 30 has a door handle 306 on the side facing the user.

[0062] See also Figure 5-7 The outer cylinder cover 20 is installed at the opening. Specifically, the outer cylinder cover 20 is installed on the outer cylinder 2, and the outer cylinder cover 20 is turned outward to open and turned correspondingly to close. The outer cylinder cover 20 at least covers the entire opening, and the outer cylinder cover 20 is in sealing contact with the inner wall of the opening and / or the outer periphery of the opening of the outer cylinder 2. That is, when the outer cylinder cover 20 is closed, the opening is completely sealed.

[0063] See also Figure 5-7 The drum washing machine comprises a shell 1, an outer drum 2 and an inner drum 3 are installed inside the shell 1, and an opening is provided on the shell 1 for the outer drum cover 20 to open and close relatively. Specifically, the shell 1 comprises a front panel, an upper panel, a back panel, a bottom panel and a side panel, and the opening is provided on the front side of the shell 1.

[0064] See also Figure 5-7 , the machine door 10 is installed at the opening. Specifically, the machine door 10 is installed on the shell 1, and the machine door 10 is turned outward to open and turned correspondingly to close.

[0065] See also Figure 5-7 The inner drum 3 is a sealed container for containing washing water when the washing machine executes the washing program.

[0066] See also Figure 5-7 In this embodiment, a lifting rib 9 is provided on the side wall of the inner cylinder 3, a receiving cavity is provided inside the lifting rib 9, a first through hole communicating with the inner space of the inner cylinder 3 and a second through hole 93 communicating with the gap between the inner cylinder 3 and the outer cylinder 2 are provided on the wall of the receiving cavity, and a control structure for controlling the opening and closing of the first through hole and / or the second through hole 93 is provided inside the receiving cavity. No through hole is provided on the wall of the inner cylinder 3 outside the lifting rib 9.

[0067] Specifically, the first through holes are densely distributed on one side of the accommodating chamber close to the inside of the inner cylinder 3, and the second through holes 93 are arranged on one side of the accommodating chamber close to the gap between the inner cylinder 3 and the outer cylinder 2. The number of the second through holes 93 is small, and the control structure controls the opening and closing of the second through holes 93. The lifting ribs 9 include multiple ones that are evenly distributed around the axis of the inner cylinder 3, and also include multiple ones that are evenly distributed along the axial direction of the inner cylinder 3.

[0068] See also Figure 5-7 In this embodiment, the lifting rib 9 includes a shell 90, and the shell 90 is provided with first through holes on two opposite sides along the direction of water flow. The shell 90 is hollow inside to form a accommodating cavity, and a second through hole 93 is provided on the bottom wall of the accommodating cavity. The second through hole 93 is connected to the drainage device, and a control structure with controllable opening and closing is installed in the accommodating cavity. The control structure opens the second through hole 93 during the dehydration process and when the inner drum 3 rotates at a high speed to discharge the washing water in the inner drum 3.

[0069] See also Figure 5-7 In this embodiment, the lifting ribs 9 protrude from the inner side surface of the side wall of the inner tube 3.

[0070] See also Figure 5-7 In this embodiment, the control structure includes a valve plug 91, an elastic member 95 and a lever. The valve plug 91 is installed at the second through hole 93 to close the second through hole 93. The elastic member 95 supports the valve plug 91 to close the second through hole 93 and can cause elastic deformation in the axial direction of the second through hole 93. One end of the lever is hinged to the valve plug 91, and the other end oppositely arranged is connected to a heavy hammer 92.

[0071] Specifically, the first through hole is in a normally open state, and the distance between the weight 92 and the lever fulcrum is relatively large, so as to facilitate driving the valve plug 91 .

[0072] See also Figure 5-7In this embodiment, the control structure includes a valve plug 91 and a weight 92 for closing the second through hole 93. The valve plug 91 can move up and down relative to the second through hole 93. One end of the weight 92 extends outward to form a lever. The lever is hinged to the valve plug 91. The up and down movement of the weight 92 causes the lever to drive the valve plug 91 to move up and down around the fulcrum to automatically control the opening and closing of the second through hole 93. An elastic member 95 is provided on the valve plug 91. When the inner drum is not working or rotating at a low speed, the valve plug 91 closes the second through hole 93 under the action of the elastic member 95. When the inner drum 3 rotates at a high speed during dehydration, The weight 92 moves radially outward along the inner drum 3 under the action of centrifugal force, one end of the lever connected to the weight 92 moves downward with the weight 92, and the other end of the lever moves upward, driving the valve plug 91 to move upward, opening the second through hole 93, and the washing water in the inner drum 3 is discharged through the first through hole and the second through hole 93. The outer drum 2 is fixed, and a water collecting device 94 is arranged on the outer drum 2 at a position relative to the second through hole 93. The water collecting device 94 is connected to a drain pipe, and a drain pump 8 is arranged on the drain pipe. The water collecting device 94 collects the water in the inner drum 3 and discharges it under the action of the drain pump 8.

[0073] See also Figure 5-7 In this embodiment, the valve plug 91 is a columnar structure whose axis is coaxial with the second through hole 93. The valve plug 91 includes a closing section that closes the second through hole 93 and a connecting section whose outer diameter is smaller than the closing section. The elastic member 95 supports the step surface between the connecting section and the closing section, and the lever is hinged to one end of the connecting section away from the closing section.

[0074] See also Figure 5-7 In this embodiment, the elastic member 95 is a cylindrical structure coaxial with the valve plug 91. The elastic member 95 is sleeved on the outside of the closed section, and its first end portion is supported on the step surface between the connecting section and the closed section, and the other end face oppositely arranged is supported and fixed inside the accommodating cavity.

[0075] See also Figure 5-7 In this embodiment, the drum washing machine includes a driving device 4, and the bottom of the inner drum 3 is transmission-connected to the driving device 4 via a motor shaft 41, and the motor shaft 41 is hollow inside to form a water inlet channel 40.

[0076] See also Figure 5-7 In this embodiment, the water inlet channel 40 is connected to the water inlet device to deliver water to the inner drum 3. The water inlet device includes a water inlet valve 5 that automatically controls the water inlet to the inner drum 3, a detergent delivery device 6, and a heating device 7.

[0077] See also Figure 5-7 In this embodiment, one end of the motor shaft 41 extends out of the driving device 4, and the motor shaft 41 and the extended end are rotatably mounted on the connecting piece 42 through a bearing. The connecting piece 42 has a connecting channel, which connects the water inlet channel 40 and the water inlet device. The detergent dispensing device 6 and the heating device 7 are connected in sequence between the connecting channel and the water inlet valve 5.

[0078] See also Figure 5-7 In this embodiment, the outer drum 2 is installed in the outer shell 1 through a shock-absorbing device. One end of the outer drum 2 is open and the other end is closed. The inner drum 3 is sleeved inside the outer drum 2. The delivery port 32 of the inner drum 3 is consistent with the opening direction of the outer drum 2. One end of the motor shaft 41 passes through the inner drum 3, and the other end is rotatably supported on the bottom wall of the outer drum 2. The outer drum 2 plays a role in supporting and shock-absorbing the inner drum 3 to ensure the working stability of the washing machine. The outer drum cover 20 is installed at the opening of the outer drum 2, and the inner drum cover 30 is installed at the delivery port 32 of the inner drum 3. The outer drum cover 20 is sealed and connected to the opening of the outer drum 2, and the inner drum cover 30 is sealed and connected to the delivery port 32 of the inner drum 3.

[0079] See also Figure 5-7 In this embodiment, the shock absorbing device includes a shock absorbing spring and a shock absorber. The shock absorbing spring is installed on the side wall of the top of the outer tube 2. One end of the shock absorbing spring is fixed on the outer shell 1, and the other end is hooked on the side wall of the outer top. The shock absorber is installed in the middle of the bottom side wall of the support seat.

[0080] See also Figure 5-7In this embodiment, a linkage mechanism is provided between the outer cylinder cover 20 and the inner cylinder cover 30. When the outer cylinder cover 20 is pulled to flip outward to open the opening of the outer cylinder 2, the inner cylinder cover 30 follows the outer cylinder cover 20 to flip outward to open. When the outer cylinder cover 20 is pushed to close the opening of the outer cylinder 2, the inner cylinder cover 30 follows the outer cylinder cover 20 to flip and correspondingly close the delivery port 32 of the inner cylinder 3. When the outer cylinder cover 20 and the inner cylinder cover 30 are closed, the inner cylinder cover 30 is sealed with the inner cylinder 3 and fixedly sealed. The inner cylinder cover 30 rotates with the inner cylinder 3, the outer cylinder cover 20 is fixed on the outer cylinder 2, and the inner cylinder cover 30 can rotate relative to the outer cylinder cover 20. When the outer cylinder cover 20 and the inner cylinder cover 30 are closed, the outer cylinder cover 20 and the inner cylinder cover 30 are fixedly connected, and the inner cylinder cover 30 and the outer periphery of the delivery port 32 of the inner cylinder 3 can be relatively rotatably sealed. Among them, the outer cylinder cover 20 and the inner cylinder cover 30 are coaxially fixedly connected. The periphery of the inner tube cover 30 extends obliquely and flares toward the outer tube cover 20, and the periphery of the inner tube cover 30 contacts the delivery port 32 of the inner tube 3, so that at least a portion of the inner tube cover 30 is in the delivery port 32. The periphery of the inner tube cover 30 is sealed and connected to the delivery port 32 of the inner tube 3 to prevent water in the inner tube 3 from flowing out. The outer periphery of the inner tube cover 30 extends outward along its radial direction, and one side of the inner tube cover 30 fits the open part of the outer tube 2. A buffer is provided between the inner tube cover 30 and the outer tube 2 to prevent a large impact on the inner tube 3 when closing. The linkage mechanism includes a first connecting end 22 and a second connecting end 31 that are plugged in and matched with each other. The first connecting end 22 protrudes and extends from the center of the outer tube cover 20 to one side of the inner tube cover 30, and the second connecting end 31 protrudes and extends from the center of the inner tube cover 30 to one side of the outer tube cover 20. The first connecting end 22 and the second connecting end 31 can be relatively rotatably connected. A rolling device 23 is installed between the first connection end 22 and the second connection end 31. The rolling device 23 is coaxially arranged with the delivery port 32. Preferably, the rolling device 23 is a bearing, the inner ring of the bearing is sleeved on the first connection end 22, and the second connection end 31 is sleeved on the outer ring of the bearing; or, the inner ring of the bearing is sleeved on the second connection end 31, and the first connection end 22 is sleeved on the outer ring of the bearing. The first connection end 22 is a cylinder, and the second connection end 31 is an open groove, the opening faces the outer cylinder cover 20, and the cylinder is inserted into the groove from the opening. A shoulder is provided at one end of the cylinder close to the door body, and the rolling device 23 is sleeved on the cylinder. The shoulder limits the rolling device 23, and the extension length of the groove is less than the extension length of the cylinder; or, the first connection end 22 is an open groove, the opening faces the inner cylinder cover 30, and the second connection end 31 is a cylinder, and the cylinder is inserted into the groove from the opening.The inner cylinder cover 30 includes a front plate and a rear plate connected in parallel. The rear plate can produce forward and backward displacement relative to the front plate. The diameter of the front plate is larger than that of the rear plate. The front plate corresponds to the opening of the closed outer cylinder 2. The rear plate is arranged between the front plate and the outer cylinder cover 20. A first connecting end 22 is arranged on the side of the front plate facing the outer cylinder cover 20. The inner cylinder cover 30 is provided with a second connecting end 31 that cooperates with the first connecting end 22. A rolling device 23 is installed between the first connecting end 22 and the second connecting end 31 so that the outer cylinder cover 20 drives the inner cylinder cover 30 to rotate. There is a certain gap between the front plate and the rear plate. A spring 21 extending along the axial direction of the delivery port 32 is installed between the front plate and the rear plate. The two ends of the spring 21 are respectively connected to the front plate and the rear plate. The outer periphery of the front plate and the rear plate passes through a telescopic tube 24 that can produce telescopic deformation. The two ends of the telescopic tube 24 are respectively sealed and connected to the outer periphery of the front plate and the rear plate.

[0081] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention has been disclosed as above in preferred embodiments, they are not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes using the above-mentioned technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A drum washing machine, characterized in that: The drum washing machine comprises an inner drum assembly, the inner drum assembly comprises an inner drum having a loading port, an inner drum cover is installed at the loading port, the inner drum cover comprises a mounting surface surrounding the axis of the inner drum cover, a sealing portion surrounding the mounting surface and having elasticity is provided on the mounting surface, and the mounting surface is in sealing contact with the inner wall surface of the loading port and the outer peripheral surface of the loading port through the sealing portion; One side of the inner cylinder cover in the axial direction is provided with a protruding boss, and the mounting surface includes a first mounting surface formed by the outer wall surface of the boss and a second mounting surface formed by the outer peripheral surface of the boss, the first mounting surface is cylindrical in shape with a radial cross section perpendicular to the axis of the inner cylinder cover, the second mounting surface is annular in shape with a plane perpendicular to the axis of the inner cylinder cover, and the second mounting surface is provided with a receiving groove surrounding the delivery port; The sealing part includes: A first sealing portion is correspondingly arranged on the first mounting surface and is in sealing contact with the inner wall surface of the delivery port; A second sealing portion is correspondingly arranged on the second mounting surface and is in sealing contact with the outer peripheral surface of the delivery port; The fixing part surrounds the containing groove, sinks into the containing groove and is in sealing contact with the inner wall surface of the containing groove; the connection between the first sealing part and the second sealing part is connected to the fixing part; The drum washing machine comprises an outer drum mounted outside the inner drum, the outer drum is provided with an opening, the loading opening and the opening are arranged to overlap in the axial direction of the inner drum; an outer drum cover is installed on the outer drum, the outer drum cover is turned outward to open and turned correspondingly to close, and the opening is completely sealed when the outer drum cover is closed; A linkage mechanism is provided between the outer tube cover and the inner tube cover, the linkage mechanism comprising a first connection end and a second connection end which are plugged into each other, the first connection end protrudingly extending from the center of the outer tube cover to one side of the inner tube cover, the second connection end protrudingly extending from the center of the inner tube cover to one side of the outer tube cover, and the first connection end and the second connection end can be relatively rotatably connected; The drum washing machine comprises an outer shell, an outer drum and an inner drum are installed inside the outer shell, an opening is provided on the outer shell for the outer drum cover to open and close relatively; a machine door is installed on the outer shell, and the machine door is an opening of the outer shell that is flipped outward to open and correspondingly flipped to close.

2. A drum washing machine according to claim 1, characterized in that: The first sealing portion has at least one protruding sealing rib surrounding the first sealing portion on one side away from the first mounting surface, and the sealing rib is gradually inclined toward the direction in which the inner cylinder cover is opened.

3. A drum washing machine according to claim 2, characterized in that: The sealing rib is in a tapered shape that gradually contracts toward the protruding end.

4. A drum washing machine according to claim 1, characterized in that: The first mounting surface is a conical surface which gradually expands toward the direction in which the inner cylinder cover opens.

5. A drum washing machine according to claim 1, characterized in that: The inner wall surface of the delivery port is a conical surface which gradually expands toward the outside of the inner tube.

6. A drum washing machine according to claim 5, characterized in that: The inner tube has a protruding delivery portion, the delivery port is arranged on the delivery portion, the protruding end of the delivery portion is folded outward to form an arc-shaped flange, and the second installation surface is in sealing contact with the arc-shaped flange via the second sealing portion.

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