A drum washing machine

Abstract

The application discloses a drum washing machine, which comprises an outer drum, a door body, a first reinforcing convex and a sealing strip. The door body is hingedly arranged on the outer drum flange. The first reinforcing convex is arranged on the outer drum flange and protrudes forward. The door body is arranged on the first reinforcing convex. The sealing strip is arranged between the door body and the outer drum flange. The door body is arranged on the outer drum flange, so that the relative movement between the door body and the outer drum is avoided. Even if the outer drum shakes greatly, the door body shakes together with the outer drum, so that the sealing property is ensured. The sealing strip is arranged between the door body and the outer drum flange, so that the sealing between the door body and the outer drum is realized, and the sealing effect is improved. The first reinforcing convex is arranged, so that the structural strength is improved, and the door body can be supported.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of washing machines, and particularly relates to a drum washing machine. BACKGROUND

[0002] The drum washing machine comprises a box body, a sleeve set outer drum and an inner drum arranged in the box body, a driving motor for driving the inner drum to rotate; an outer drum opening is formed on the front side of the outer drum, and an inner drum opening matched with the outer drum opening is arranged on the front side of the inner drum, and the outer drum opening is located on the front side of the inner drum opening; the drum washing machine further comprises an openable and closable door body, and the door body is mounted on the front plate of the box body, and a window gasket is sealingly connected between the front plate and the outer drum flange. The working mode of the drum washing machine is similar to the principle of a rod hammer hitting clothes. During work, the inner drum rotates under the driving of the driving motor. With the rotation of the inner drum, the clothes are repeatedly lifted and dropped in the drum, and the clothes are washed clean under the joint action of washing powder and water.

[0003] At present, a damping component is arranged between the outer drum and the box body, and the outer drum is swingably located in the box body during the working process of the washing machine; the box body is fixedly arranged, and the door body is hingedly arranged on the box body, so that the outer drum is swingable relative to the door body, and the window gasket is used to realize the sealing of the relative movement between the door body and the outer drum. When the load of the outer drum of the washing machine is small and the movement amplitude is small, the window gasket can be used for sealing. However, when the volume and the bearable load of the outer drum are large, and the swing amplitude of the outer drum is also large, if the door body is still mounted on the front plate, the window gasket will be difficult to withstand such a large amplitude and working time, and water cannot be sealed.

[0004] In addition, during the high-speed rotation dehydration of the drum washing machine, a large amount of water and a small amount of foam are splashed out of the wet clothes, which first flows into the outer drum from the inner drum. However, under the action of the rotating air flow, the water and the small amount of foam flowing to the outer drum drain port will be hindered by the air flow, forming a vortex. Due to the inability to be discharged in time, the water and the small amount of foam will be rotated out along the tangent direction between the inner and outer drum flanges at the drum opening under the action of rotational inertia, splashed onto the observation window, and flowed down along the observation window, causing water leakage. On the one hand, it will lead to a decrease in the spin-drying rate, and on the other hand, the water stains and foam left on the observation window will be difficult to clean, and long-term use will cause user complaints. In addition, the gap between the inner and outer drum flanges at the drum opening is easy to drop into long strip tools during installation or use, and it is difficult to take out, which is a difficult-to-ignore hidden danger.

[0005] The above information disclosed in the background of the application is only used to increase the understanding of the background of the application, and therefore, it can include prior art known by those skilled in the art. SUMMARY

[0006] The present application aims at the above-mentioned problems in the prior art, and provides a drum washing machine, which avoids relative movement between a door body and an outer drum flange by arranging the door body on the outer drum flange, and is beneficial to ensuring sealing performance.

[0007] To achieve the above-mentioned object, the present application adopts the following technical solutions:

[0008] A drum washing machine comprises:

[0009] An outer drum comprises an outer drum body and an outer drum flange arranged at a front end of the outer drum body;

[0010] A door body is hingedly arranged on the outer drum flange;

[0011] A first reinforcing protrusion protruding forward is arranged on the outer drum flange, and the door body is arranged on the first reinforcing protrusion;

[0012] A sealing strip for sealing is arranged between the door body and the outer drum flange.

[0013] Further, the outer drum flange has a ring structure, and a ratio of a left-right dimension of the first reinforcing protrusion to a radial dimension of the outer drum flange is 0.8-0.95.

[0014] Further, a ratio of a left-right dimension of the first reinforcing protrusion to a radial dimension of the outer drum flange is 0.8-0.95.

[0015] Further, the first reinforcing protrusion has a first bottom, a first side portion extending rearward along an edge of the first bottom, and a rear end of the first side portion is connected to the outer drum flange.

[0016] Further, an area surrounded by the rear end of the first side portion is greater than an area of the first bottom.

[0017] Further, an angle between the first side portion and the outer drum flange is 130°-140°.

[0018] Further, a door hinge is arranged between the door body and the first reinforcing protrusion, and the door hinge has a first hinge branch fixed to the first bottom.

[0019] Further, the first hinge branch has a first fixed plate fixed to the first bottom, and a first hinge portion extending forward along the first fixed plate.

[0020] Further, an area of the first bottom is equal to or slightly greater than an area of the first fixed plate.

[0021] Further, the first bottom and the first fixed plate are fixed by a fastener, the first bottom is provided with a first fastening hole, the first fixed plate is provided with a second fastening hole matched with the first fastening hole, and the fastener passes through the first fastening hole and the second fastening hole.

[0022] Further, the first bottom is provided with a front positioning convex, and the first fixed plate is provided with a positioning hole matched with the positioning convex.

[0023] Further, the door hinge is provided with a second branch chain fixed on the door body, the second branch chain is provided with a second fixed plate fixed on the door body and a second hinge part outwardly extended along the second fixed plate, and the second hinge part is hinged with the first hinge part.

[0024] Further, the first fixed plate is provided with a limiting plate forwardly extended and used for limiting the door body to be opened to a position.

[0025] Further, the outer cylinder flange is provided with a second reinforcing convex forwardly protruded, and a door lock matched with the door body is fixed on the second reinforcing convex.

[0026] Further, the door body is provided with an observation window, the sealing strip is provided with a first sealing groove wrapped around an edge of the observation window and a sealing edge outwardly and rearwardly extended along an inner end of a rear groove wall of the first sealing groove, and the sealing edge is sealed with the outer cylinder flange in a closed state of the door body.

[0027] Further, the sealing strip is further provided with a door shell located outside the observation window, the sealing strip is provided with a second sealing groove connected with an inner end of an outer groove wall of the first sealing groove, and the second sealing groove is located at a front side of the first sealing groove and wrapped around an inner edge of the door shell.

[0028] Compared with the prior art, the door body is installed on the outer cylinder flange, the relative movement between the door body and the outer cylinder flange is avoided, the door body shakes together with the outer cylinder even if the outer cylinder shakes greatly, and the sealing effect is improved; the sealing strip is arranged between the door body and the outer cylinder flange, the sealing between the door body and the outer cylinder flange is realized, and the sealing effect is improved; the first reinforcing convex is arranged, the structural strength is improved, and the door body is supported.

[0029] Other features and advantages of the present application will become more apparent after reading the specific embodiments of the present application in combination with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained based on these drawings without any creative effort.

[0031] Figure 1 Structure schematic diagram of an embodiment of the drum washing machine proposed in the present application;

[0032] Figure 2 Structure schematic diagram of the drum washing machine proposed in the present application; Figure 1 Structure schematic diagram of another angle in the drum washing machine;

[0033] Figure 3 Structure schematic diagram of the A area in the drum washing machine; Figure 2 Structure schematic diagram of the B area in the drum washing machine;

[0034] Figure 4 Structure schematic diagram of the C area in the drum washing machine; Figure 3 Structure schematic diagram of the D area in the drum washing machine;

[0035] Figure 5 Structure schematic diagram of the drum washing machine after being cut open; Figure 2 Structure schematic diagram of the drum washing machine after being cut open;

[0036] Figure 6 Structure schematic diagram of the drum washing machine after being cut open; Figure 5 Structure schematic diagram of the drum washing machine after being cut open;

[0037] Figure 7 Structure schematic diagram of the drum washing machine after being cut open; Figure 6 Structure schematic diagram of the drum washing machine after being cut open;

[0038] Figure 8 Structure schematic diagram of the drum washing machine after being cut open; Figure 1 Structure schematic diagram of the drum washing machine after being cut open;

[0039] Figure 9 Structure schematic diagram of the drum washing machine after being cut open; Figure 8 Structure schematic diagram of the drum washing machine after being cut open;

[0040] Figure 10 Structure schematic diagram of the drum washing machine after being cut open; Figure 9 Structure schematic diagram of the drum washing machine after being cut open;

[0041] Figure 11 Structure schematic diagram of the drum washing machine after being cut open; Figure 9 Structure schematic diagram of the drum washing machine after being cut open;

[0042] Figure 12 Structure schematic diagram of the drum washing machine after being cut open; Figure 9 Structure schematic diagram of the drum washing machine after being cut open;

[0043] Figure 13 Structure schematic diagram of the drum washing machine after being cut open; Figure 8 Structure schematic diagram of the drum washing machine after being cut open;

[0044] Figure 14 For Figure 8 Another angle structural schematic view of the door body removed. DETAILED DESCRIPTION

[0045] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application.

[0046] In the description of the present application, it should be noted that the terms "upper", "lower", "left", "right" and the like indicate the positional or locational relationship shown in the drawings, with the direction close to the axis of the inner cylinder being "inner" and the opposite direction being "outer". The terms are only for the convenience of describing the present application and simplifying 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. In addition, the terms "first", "second", "third" are only for the purpose of description and cannot be understood as indicating or implying relative importance; the features with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0047] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. 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.

[0048] Referring to Figures 1-14It is an embodiment of the drum washing machine provided by the application, and a drum washing machine 100 comprises an outer drum 10, an inner drum 20 and a door body 30. The outer drum 10 and the inner drum 20 are arranged in a sleeve manner. The outer drum 10 has an outer drum body 11 and an outer drum flange 12 arranged at the front end of the outer drum body 11. The door body 30 is hingedly arranged on the outer drum flange 12. The outer drum flange 12 is provided with a first reinforcing protrusion 129 protruding forward, and the door body 30 is arranged on the first reinforcing protrusion 129. A sealing strip 33 for sealing is arranged between the door body 30 and the outer drum flange 12. By arranging the door body 30 on the outer drum flange 12, the door body 30 and the outer drum 10 are relatively stationary, and relative movement between the two is avoided. Even if the outer drum shakes greatly, the door body 30 shakes together with the outer drum 10, which is beneficial to guarantee the sealing performance. A sealing strip 33 can be arranged between the door body 30 and the outer drum flange 12 to realize sealing between the two, which is beneficial to increase the sealing effect. The first reinforcing protrusion 129 is arranged, which is beneficial to increase the structural strength and can bear the door body 30.

[0049] Referring to Figure 6 As shown in the figure, the first reinforcing protrusion 129 has a first bottom 1291 and a first side 1292 extending rearwardly and obliquely from the edge of the first bottom 1291. The first bottom 1291 is a planar structure, and the rear end of the first side 1292 is connected with the outer drum flange 12. The area surrounded by the rear end of the first side 1291 is greater than the area of the first bottom 1291, that is, the first side 1292 is closer to the first bottom 1291 in the forward direction. By arranging the first side 1292 to be oblique, the structural strength is improved, and the stress bearing capacity of the first reinforcing protrusion 129 is increased. The first bottom 1291 is arranged to be planar, which is beneficial to the installation and connection of the door body 30. The size of the first side 1291 in the direction from outside to inside is shorter. The included angle between the first side 1291 and the outer drum flange 12 is 130°-140°. Preferably, the included angle between the first side 1291 and the outer drum flange 12 is 145°.

[0050] Referring to Figure 4 As shown in the figure, in order to guarantee the structural strength of the first reinforcing protrusion 129, the size of the first reinforcing protrusion 129 cannot be too small, but it is not the larger the better. The outer drum flange 12 is a ring structure, and the radial size of the outer drum flange 12 is the difference between the outer diameter and the inner diameter of the outer drum flange 12. The size of the first reinforcing protrusion 129 arranged in the left-right direction is as large as possible, and the ratio of the size of the first reinforcing protrusion 129 arranged in the left-right direction to the radial size of the outer drum flange 12 is 0.8-0.95. The size of the first reinforcing protrusion 129 in the left-right direction is greater than the size of the first reinforcing protrusion 129 in the up-down direction, and the ratio of the size of the first reinforcing protrusion 129 in the up-down direction to the size in the left-right direction is 0.25-0.35.

[0051] Referring to Figure 3As shown, the door hinge 40 is arranged between the door body 30 and the first reinforcing protrusion 129, and has a first branch chain 41 fixed on the first bottom portion 1291. The first branch chain 41 has a first fixed plate 411 fixed on the first bottom portion 1291, and a first hinge portion 412 extending forwardly from the first fixed plate 411. The area of the first bottom portion 1291 is equal to or slightly larger than the area of the first fixed plate 411.

[0052] For the fixation between the first fixed plate 411 and the first reinforcing protrusion 129, in the embodiment, the first bottom portion 1291 and the first fixed plate 411 are fixed by a fastener 415. The first bottom portion 1291 is provided with a first fastening hole, and the first fixed plate 411 is provided with a second fastening hole matched with the first fastening hole. The fastener 1291 passes through the first fastening hole and the second fastening hole. The fastener 415 is arranged to fix the first bottom portion 1291 and the first fixed plate 411, which is beneficial to ensuring the firmness of the fixation. In order to facilitate the installation and positioning of the first fixed plate 411, the first bottom portion 1291 is provided with a front protruding positioning protrusion 12911, and the first fixed plate 411 is provided with a positioning hole 4111 matched with the positioning protrusion 12911.

[0053] The door hinge 40 has a second branch chain 42 fixed on the door body 30. The second branch chain 42 has a second fixed plate 421 fixed on the door body 30, and a second hinge portion 422 extending outwardly from the second fixed plate 421. The second hinge portion 422 is hinged with the first hinge portion 412. The first fixed plate 411 is provided with a limiting plate 413 extending forwardly. The limiting plate 413 is used to limit the opening of the door body 30. After the door body 30 is opened to the position where the door body 30 contacts with the limiting plate 413, the door body 30 cannot be continuously opened.

[0054] Referring to Figure 2 As shown, the outer drum flange 12 is provided with a second reinforcing protrusion 120 protruding forwardly. The second reinforcing protrusion 120 is fixed with a door lock 50 matched with the door body 30. The second reinforcing protrusion 120 is arranged to increase the structural strength.

[0055] Referring to Figure 8 and Figure 9 As shown, the drum washing machine 100 further includes a door body 30 which can open and close the outer drum opening 121. The door body 30 is provided with a sealing strip 33 used to seal with the outer drum flange 12. The sealing strip 33 is arranged on the door body 30. In the closed state of the door body 30, the sealing strip 33 directly contacts and seals with the outer drum flange 12, so as to realize the sealing between the door body 30 and the outer drum 10. This is beneficial to simplifying the sealing structure and improving the sealing effect.

[0056] The door body 30 has an observation window 31 and a door shell 32, and the sealing strip 33 has a first sealing groove 331 covering the edge of the observation window 31, and a sealing edge 332 bent outward and rearward along the inner end of the rear groove wall of the first sealing groove 331; in the closed state of the door body 30, the sealing edge 332 is sealed with the outer cylinder flange 12. By arranging the first sealing groove 331, the sealing installation of the observation window 31 is realized, and the sealing edge 332 is arranged to realize the sealing between the door body 30 and the outer cylinder flange 12. The door body 30 also has a door inner shell (not shown in the figure), which is located at the rear side of the edge of the observation window 31, and the door inner shell and the door shell 32 clamp the sealing strip 33 on the edge of the observation window 31.

[0057] Referring to Figure 12 As shown, the sealing strip 33 also has a door shell 32 located outside the observation window 31, and the sealing strip 33 has a second sealing groove 333 connected with the inner end of the outer groove wall of the first sealing groove 331, the second sealing groove 333 has an outer opening, and the second sealing groove 333 is located at the front side of the first sealing groove 331 and covers the inner edge of the door shell 32.

[0058] Referring to Figure 9 , Figure 11 and Figure 14 As shown, the inner cylinder 20 has an inner cylinder body 21 and an inner cylinder flange 22 arranged at the front end of the inner cylinder body 21; the outer cylinder flange 12 is located in front of the inner cylinder flange 22, and the outer cylinder port 121 and the inner cylinder port 221 are arranged in front and back. The outer cylinder flange 12 is annular, and the middle part of the outer cylinder flange 12 is provided with an outer cylinder turn-up 122 surrounding the outer cylinder port 121, which is arranged to extend outward and rearward; the inner cylinder flange 22 is annular, and the middle part of the inner cylinder flange 22 is provided with an inner cylinder turn-up 222 surrounding the inner cylinder port 221, which extends forward and bends outward. The rear part of the outer cylinder turn-up 122 is located outside the inner cylinder turn-up 222, that is, the plane where the rear end of the outer cylinder turn-up 122 is located is located behind the front end of the inner cylinder turn-up 222, and the outer cylinder turn-up 122 and the inner cylinder turn-up 222 are partially overlapped in the front and back directions and form a labyrinth structure, so that the water flow moving inward between the outer cylinder flange 12 and the inner cylinder flange 22 during the dehydration process is blocked by the outer cylinder turn-up 122 and the inner cylinder turn-up 222, avoiding the water flow from being thrown onto the observation window, and avoiding the phenomenon of water flowing into the observation window.

[0059] Referring to Figure 9 and Figure 10As shown, the outer cylinder flange 12 has an outer edge 123 connected with the outer cylinder flange 122 and extending outwardly, the first return cavity 126 is formed between the outer cylinder flange 122 and the outer edge 123, and the first outlet 127 is formed between the rear end of the outer cylinder flange 122 and the inner cylinder flange 22. During the dehydration process, the water flowing inwardly between the outer cylinder flange 12 and the inner cylinder flange 22 is first blocked by the outer cylinder flange 12, most of which flows into the first return cavity 126, and then flows back between the outer cylinder flange 12 and the inner cylinder flange 22. A part of the water flow can flow inwardly from the first outlet 127, and then be blocked by the inner cylinder flange 222 and fall to the inner side of the outer cylinder flange 122 and the first outlet 127. Since the outer cylinder flange 122 extends outwardly and rearwardly, the water flowing to the inner side of the outer cylinder flange 122 will flow back between the outer cylinder flange 12 and the inner cylinder flange 22 through the first outlet 127, avoiding the water flow from between the outer cylinder flange 122 and the inner cylinder flange 222.

[0060] Specifically, the size of the outer cylinder flange 122 in the front-rear direction is much larger than the size of the first opening 127, and preferably the ratio of the size of the outer cylinder flange 122 in the front-rear direction to the size of the first opening 127 is 3-7.

[0061] Referring to Figure 9 , Figure 11 and Figure 13 , the inner cylinder flange 22 has an inner edge 223 connected with the inner cylinder flange 222, the inner edge 223 extends radially outwardly along the rear end of the inner cylinder flange 222, and the second return cavity 228 is formed between the inner cylinder flange 222 and the inner edge 223. The second opening 229 is formed between the end of the inner cylinder flange 222 and the inner edge 223, and the plane where the rear end of the outer cylinder flange 122 is located is located on the rear side of the end of the inner cylinder flange 222, or in other words, the plane where the rear end of the outer cylinder flange 122 is located passes through the second opening 229. The water flow radially thrown inwardly from the first opening 127 can all flow into the second return cavity 228; part of the water flow flowing back from the second return cavity 228 falls to the inner side of the outer cylinder flange 122, and then flows into the first outlet 127; part of the water flow directly flows into the first outlet 127 and flows back between the outer cylinder flange 12 and the inner cylinder flange 22.

[0062] The inner cylinder flange 22 has an inner edge 223 extending radially and connected with the inner cylinder flange 222, a first inner inclined portion 224 extending outwardly and backwardly along the outer side of the inner edge 223, and a parallel surface of the rear end of the outer cylinder flange 122 and parallel to the first inner inclined portion 224 intersecting with the inner cylinder flange 222. The first inner inclined portion 224 is arranged to increase the structural strength of the inner cylinder flange 22, and the backward extension of the first inner inclined portion 224 increases the distance between the outer cylinder flange 12 and the inner cylinder flange 22, reduces the speed of the water flow, and reduces the impact force of the water flow reaching the first outlet 127. The water flow between the outer cylinder flange 12 and the inner cylinder flange 22 moves toward the middle, flows outwardly along the radial direction, that is, flows along the tangential direction, and part of the water flow impacts the first inner inclined portion 224 and then flows inwardly along the inclined direction of the first inner inclined portion 224. The water flow flowing outwardly along the radial direction flows into the second return cavity 228 from the first outlet 127, and the water flow flowing inwardly along the inclined direction of the first inner inclined portion 224 impacts the outer side of the inner cylinder flange 222 and then falls back to the inner side of the outer cylinder flange 122 and then flows into the first outlet 127 without flowing inwardly between the outer cylinder flange 122 and the inner cylinder flange 222. The rear end of the outer cylinder flange 122 is located on the front side of the first inner inclined portion 224.

[0063] The inner cylinder flange 22 further has a second inner inclined portion 225 extending outwardly and forwardly along the outer side of the first inner inclined portion 224, and an inner extension 226 extending radially outwardly along the outer side of the second inner inclined portion 225. The second inner inclined portion 225 is arranged to further increase the structural strength of the inner cylinder flange 22, and the volume between the outer cylinder flange 12 and the inner cylinder flange 22 is increased, the area inwardly along the second inner inclined portion 225 is increased in the direction from the outside to the inside between the outer cylinder flange 12 and the inner cylinder flange 22, the speed of the water flow is reduced, and part of the water flow impacts the first inner inclined portion 224 to further consume energy and then flows inwardly along the second inner inclined portion 225.

[0064] The inner cylinder flange 22 further has a third inner inclined portion 227 extending outwardly and backwardly along the inner extension 226, and a plurality of grooves 220 are arranged at the circumferential interval between the inner extension 226 and the third inner inclined portion 227. The groove bottom of the groove 220 is connected with the rear end of the third inner inclined portion 227 and the inner side of the inner extension 226, which is arranged to increase the structural strength of the inner cylinder flange 22. The distance from the outer side of the groove 220 to the outer cylinder flange 12 is greater than the distance from the third inner inclined portion 227 to the outer cylinder flange 12, which is arranged to return the water flow between the outer cylinder flange 12 and the inner cylinder flange 22 to the bottom of the outer cylinder 10.

[0065] Referring to Figure 9 , Figure 10 and Figure 13As shown, the outer cylinder flange 12 has an outer edge portion 123 connected with the outer cylinder flange 122, a first outer inclined portion 124 inclined outwardly and rearwardly along the outer side of the outer edge portion 123, and the first outer inclined portion 124 is arranged in parallel with the first inner inclined portion 224. By arranging the first outer inclined portion 124, the structural strength of the outer cylinder flange 12 is improved, and the water flow flowing inwardly between the outer cylinder flange 12 and the inner cylinder flange 22 is made to flow along the first outer inclined portion 124, so that the water flow speed is reduced, and most of the water flow impacts into the first return cavity 126.

[0066] The outer cylinder flange 12 has a second outer inclined portion 125 extending outwardly and rearwardly from the outer side of the first outer inclined portion 124, the second outer inclined portion 125 is a slightly inclined inclined surface, and the included angle between the second outer inclined portion 125 and the radial plane is smaller than the included angle between the first outer inclined portion 124 and the radial plane. The included angle between the first outer inclined portion 124 and the radial plane is 40°-50°, and the included angle between the second outer inclined portion 125 and the radial plane is 3°-15°. By arranging the second outer inclined portion 125, the structural strength of the outer cylinder flange 12 is improved, and the water flow speed flowing inwardly between the outer cylinder flange 12 and the inner cylinder flange 22 is reduced. The outer cylinder flange 12 further has a reinforcing ring 128 located outwardly of the connection between the first outer inclined portion 124 and the second outer inclined portion 125, which is beneficial to increase the structural strength of the outer cylinder flange 12.

[0067] Referring to Figure 13 As shown, the outer cylinder flange 122 has a first outer folding portion 1221 rearwardly, a second outer folding portion 1222 connected with the rear end of the first outer folding portion 1221, and a flange outer extension portion 1223 connected with the second outer folding portion 1223 and extending rearwardly; the second outer folding portion 1222 extends outwardly and rearwardly, the flange outer extension portion 1223 is located outwardly of the inner cylinder flange 222, and the arc surface where the inner side of the outer cylinder flange 122 is located is located inwardly of the outer side of the inner cylinder flange 222, that is, the inner cylinder flange 222 is located in the notch formed by the outer cylinder flange 122. The inner cylinder flange 222 has a front edge portion 2221 extending forwardly, and an inner folding portion 2222 outwardly and rearwardly arranged along the front end of the front edge portion 2221.

[0068] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, the technical solutions recorded in the foregoing embodiments can still be modified by those of ordinary skill in the art, or some technical features can be replaced equivalently; and these modifications or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions claimed by the present application.

Claims

1. A drum washing machine, characterized in that, include: The outer cylinder has an outer cylinder body and an outer cylinder flange disposed at the front end of the outer cylinder body; The door body is hinged to the outer cylinder flange; The outer cylinder flange is provided with a first reinforcing protrusion that protrudes forward, and the door body is mounted on the first reinforcing protrusion; A sealing strip is provided between the door body and the outer cylinder flange for sealing; The inner cylinder has an inner cylinder body and an inner cylinder flange disposed at the front end of the inner cylinder body. The outer cylinder flange has an outer cylinder flange in the middle that surrounds the outer cylinder opening. The outer cylinder flange extends outward and backward. The inner cylinder flange has an inner cylinder flange in the middle that surrounds the inner cylinder opening. The inner cylinder flange extends forward and bends outward. The outer cylinder opening and the inner cylinder opening are disposed one after the other. The rear part of the outer cylinder flange is located outside the inner cylinder flange. The outer cylinder flange and the inner cylinder flange partially overlap in the front-to-back direction and form a labyrinth-shaped structure. The inner cylinder flange has an inner edge that extends radially and is connected to the inner cylinder flange, and a first inner inclined part that is inclined outward and backward along the outer side of the inner edge. The inner cylinder flange intersects with the rear end of the outer cylinder flange and is parallel to the first inner inclined part.

2. The drum washing machine according to claim 1, characterized in that, The outer cylinder flange has an annular structure, and the ratio of the left-right dimension of the first reinforcing convex to the radial dimension of the outer cylinder flange is 0.8 to 0.

95.

3. The drum washing machine according to claim 1, characterized in that, The first reinforcing protrusion has a first bottom and a first side extending backward at an angle along the edge of the first bottom. The rear end of the first side is connected to the outer cylinder flange, and the included angle between the first side and the outer cylinder flange is 130° to 140°.

4. The drum washing machine according to claim 3, characterized in that, A door hinge is provided between the door body and the first reinforcing protrusion. The door hinge has a first branch fixed to the first bottom. The first branch has a first fixing plate fixed to the first bottom and a first hinge portion extending forward along the first fixing plate.

5. The drum washing machine according to claim 4, characterized in that, The first bottom and the first fixing plate are fixed together by fasteners. A first fastening hole is provided on the first bottom, and a second fastening hole matching the first fastening hole is provided on the first fixing plate. The fasteners pass through the first fastening hole and the second fastening hole.

6. The drum washing machine according to claim 4, characterized in that, The door hinge has a second branch fixed to the door body, the second branch has a second fixing plate fixed to the door body and a second hinge portion extending outward along the second fixing plate, the second hinge portion being hinged to the first hinge portion.

7. The drum washing machine according to claim 5, characterized in that, The first fixing plate is provided with a limiting plate that extends forward to limit the door to open to the correct position.

8. The drum washing machine according to any one of claims 1 to 7, characterized in that, The outer flange is provided with a second reinforcing protrusion that protrudes forward, and a door lock that matches the door body is fixed on the second reinforcing protrusion.

9. The drum washing machine according to any one of claims 1 to 7, characterized in that, The door has an observation window, and the sealing strip has a first sealing groove covering the edge of the observation window and a sealing edge that bends outward and extends backward along the inner end of the rear wall of the first sealing groove; when the door is closed, the sealing edge seals with the outer cylinder flange.

10. The drum washing machine according to claim 9, characterized in that, The sealing strip also has a door shell located outside the observation window. The sealing strip has a second sealing groove that is connected to the inner end of the outer groove wall of the first sealing groove. The second sealing groove is located in front of the first sealing groove and covers the inner edge of the door shell.

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