A washing machine door body assembly and a washing machine

Abstract

The application discloses a washing machine door body assembly and a washing machine. The door body assembly comprises a door body, a hinge, the hinge is provided with a hinge plate fixed on a washing machine box body and a hinge reinforcing plate fixed in the door body, the door body is provided with an inner frame and a middle frame, the hinge reinforcing plate is located outside the middle frame, and a first fixing structure penetrating through the middle frame is arranged between the hinge reinforcing plate and the inner frame. By arranging the hinge reinforcing plate, the structure is simplified, and installation and fixation are facilitated. By arranging the hinge reinforcing plate outside the middle frame and the first fixing structure, the hinge reinforcing plate, the inner frame and the middle frame are fixed together, the structural strength is improved, the firmness after fixation is increased, the hinge is prevented from loosening, and the abrasion of the washing machine door body is reduced. When the door body is impacted by external impact, the impact force is transmitted to the middle frame and the inner frame through the hinge, and the ability of the door body to bear the impact force is improved.

Description

Technical Field

[0001] This invention belongs to the field of washing machine technology, specifically relating to a washing machine door assembly and a washing machine having the door assembly. Background Technology

[0002] Generally, a washing machine includes a cabinet, a door, an outer drum, an inner drum, a drive system, and a control system. The door is located on the front or top of the cabinet for opening and closing. The outer drum is fixed inside the cabinet by a suspension mechanism, and the inner drum is installed inside the outer drum. Opening the door allows you to put clothes into the inner drum or take them out. The drive system drives the motor to rotate. A control panel is located on the front or top of the cabinet for users to select washing programs, and the control system controls the washing process of the washing machine.

[0003] The existing drum washing machine door assembly includes a screen, outer frame, middle frame, inner frame, door hinge, and glass basin. These components are assembled with fixing screws. The connection between the door and the cabinet is mostly made of metal hinges. Due to the repeated opening and closing of the door, the door is prone to wear at the contact point with the hinge, resulting in loosening of the fit and causing the door to sag, thus affecting the locking of the drum washing machine.

[0004] Furthermore, during transportation or when other washing machines are susceptible to vibration and impact, the door, located at the front of the drum washing machine, is more likely to be impacted. The hinge is fixed to the door by pressing the inner and outer frames together. When the door is subjected to external impact, the inner and outer frames are subjected to concentrated stress at the hinge connection point. A strong impact can cause the plastic inner and outer frames to crack, thus affecting the normal use of the washing machine.

[0005] For example, patent CN201610818815.X discloses a door hinge assembly, including a first hinge reinforcement plate, a second hinge reinforcement plate, and a hinge. The first and second hinge reinforcement plates are interconnected and fixed to the inner frame of the door. The two ends of the hinge are rotatably connected to the first and second hinge reinforcement plates, respectively. In the aforementioned patent, by fixing the first and second hinge reinforcement plates, which are interconnected, to the inner frame of the door and rotatably connecting the hinge to these plates, wear on the washing machine door can be reduced. When the hinge is subjected to external force, the first and second hinge reinforcement plates can distribute the force to the inner frame of the door. However, in the aforementioned patent, the first and second hinge reinforcement plates are fixed to the inner side of the inner frame with screws, which has the following disadvantages: First, the addition of two hinge reinforcement plates makes the structure complex and is not conducive to improving assembly and fixing efficiency; second, during long-term opening and closing of the door, the fixation between the two hinge reinforcement plates and the inner frame may loosen, causing the door to drop; third, the force impacting the hinges is transmitted to the inner frame, which may also damage the connection between the inner frame and the hinge reinforcement plates.

[0006] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Summary of the Invention

[0007] In view of the above-mentioned problems in the prior art, the present invention proposes a washing machine door assembly, which is beneficial to improving the fixing firmness of the hinge reinforcement plate and increasing the door's ability to withstand impacts.

[0008] To achieve the above-mentioned objectives, the present invention employs the following technical solution: A washing machine door assembly, comprising: Door body; A hinge, which is hinged to the door body; The hinge has a hinge plate fixed to the washing machine cabinet and a hinge reinforcement plate fixed to the door body; The door has an inner frame and a middle frame, the hinge reinforcement plate is located outside the middle frame, and a first fixing structure passing through the middle frame is provided between the hinge reinforcement plate and the inner frame.

[0009] In some embodiments of this application, the first fixing structure has a first fixing post extending outward along the inner frame, a first mounting hole that mates with the first fixing post on the hinge reinforcement plate, and a through hole for the first fixing post to pass through on the middle frame.

[0010] In some embodiments of this application, an axially arranged first limiting rib is provided on the outer side of the first fixed column, and a limiting groove matching the first limiting rib is provided on the middle frame to achieve limiting, and the first limiting groove is connected to the through hole.

[0011] In some embodiments of this application, a plurality of limiting ribs are provided on the outer side of the first fixed column, and the first limiting rib is provided in a radially extending manner.

[0012] In some embodiments of this application, the inner frame is provided with a plurality of first fixing posts, and the radial extension directions of the plurality of first limiting ribs between two first fixing posts are at least not completely the same.

[0013] In some embodiments of this application, a guide edge is provided on the hinge reinforcing plate surrounding the outside of the first mounting hole. The guide edge is located outside the first fixing post and is adjacent to the middle frame.

[0014] In some embodiments of this application, an inclined guide surface is provided on the inner side of the guide along one end near the middle frame.

[0015] In some embodiments of this application, the hinge reinforcement plate has a first adjacent portion adjacent to the middle frame and a second adjacent portion adjacent to the inner frame, and a second fixing structure is provided between the guide edge of the hinge reinforcement plate and the inner frame.

[0016] In some embodiments of this application, the second fixing structure has a second fixing post extending outward along the inner frame, and a second mounting hole that mates with the second fixing post is provided on the hinge reinforcing plate, the second mounting hole being located in the second adjacent portion.

[0017] In some embodiments of this application, a flange extending outward is provided on the side of the inner frame away from the axis of the door body, and a support protrusion extending outward is provided on the side of the hinge reinforcement plate away from the axis of the door body. A support groove matching the support protrusion is provided on the flange, and the support protrusion is located in the support groove.

[0018] In some embodiments of this application, the side of the hinge reinforcement plate away from the door axis matches the side of the flange close to the door axis.

[0019] In some embodiments of this application, the hinge further includes a hinge arm fixed to the hinge plate, an avoidance slot for avoiding the hinge arm is provided on the inner frame, and an avoidance groove for avoiding the hinge arm is provided on the hinge reinforcing plate; the avoidance slot and the avoidance groove are arranged adjacent to each other.

[0020] In some embodiments of this application, the hinge reinforcing plate has an inner extension protrusion located within the clearance groove at the support protrusion, and a first mating groove that mates with the end of the inner extension protrusion is provided at the flange on at least one side of the clearance groove.

[0021] In some embodiments of this application, a second mating groove is provided on the outer side of the flange at both ends of the clearance groove, and an extension protrusion is provided at the support protrusion of the hinge reinforcement plate, the extension protrusion being located within the second mating groove.

[0022] In some embodiments of this application, the inner extension protrusion and the extension protrusion are flush on the side away from the axis of the door body.

[0023] In some embodiments of this application, a third limiting rib is provided on the middle frame for defining the hinge reinforcing plate, and the third limiting rib surrounds the corner of the hinge reinforcing plate.

[0024] In some embodiments of this application, the third limiting rib portion has a surrounding rib and a plurality of reinforcing ribs arranged perpendicularly to the surrounding rib.

[0025] In some embodiments of this application, a second limiting rib is provided on the inner frame, extending outward to define the hinge reinforcing plate. The hinge reinforcing plate has a corner groove, and the second limiting rib is located within the corner groove.

[0026] In some embodiments of this application, the hinge further has a hinge shaft disposed between the hinge reinforcement plate and the hinge plate, a first hinge hole for the hinge shaft to pass through is provided on the hinge arm, and a second hinge hole for the hinge shaft to pass through is provided on the hinge reinforcement plate.

[0027] Based on the washing machine door assembly described above, the present invention also provides a washing machine having the above-mentioned door assembly, which is beneficial to improving the fixing firmness of the hinge reinforcement plate and increasing the door's ability to withstand impacts.

[0028] A washing machine has a housing and the aforementioned door assembly hinged to the housing.

[0029] Compared with the prior art, the advantages and positive effects of the present invention are as follows: by setting a hinge reinforcement plate, the structure is simplified and installation and fixation are facilitated; by setting the hinge reinforcement plate on the outside of the middle frame and the first fixing structure, the hinge reinforcement plate is fixed together with the inner frame and the middle frame, which helps to improve the structural strength, increase the firmness after fixing, prevent the hinge from loosening, and reduce the wear of the washing machine door; when the door is subjected to external impact, the impact force is transmitted to the middle frame and the inner frame through the hinge, which helps to improve the door's ability to withstand impact forces.

[0030] Other features and advantages of the present invention will become clearer after reading the detailed embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of an embodiment of a washing machine door assembly proposed in this invention; Figure 2 for Figure 1 Enlarged structural diagram of the middle section; Figure 3 for Figure 2 Enlarged structural diagram of region A in the middle; Figure 4 for Figure 1 A structural diagram from another angle; Figure 5 for Figure 4 Enlarged structural diagram of the middle section; Figure 6 for Figure 5 A magnified structural diagram of region B in the middle; Figure 7 for Figure 1 A schematic diagram of the cross-sectional structure in the diagram; Figure 8 for Figure 7 A magnified structural diagram of region D in the middle; Figure 9 This is a schematic diagram of the inner shell structure; Figure 10 for Figure 9 Enlarged structural diagram of the middle section; Figure 11 This is a schematic diagram of the middle shell structure; Figure 12 for Figure 10 Enlarged structural diagram of the middle section; Figure 13 This is a schematic diagram of the hinge plate. Figure 14 This is a structural schematic diagram of the hinge reinforcement plate. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0034] In the description of this invention, it should be noted that the terms "upper," "lower," "left," and "right," etc., indicate the orientation or positional relationship based on the positional relationship shown in the accompanying drawings, with the direction closer to the center of the inner cylinder being "inner," and vice versa. These terms are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] The following disclosure provides many different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided, but those skilled in the art will recognize the application of other processes and / or the use of other materials. Example 1

[0038] See Figures 1-14 An embodiment of a washing machine door assembly proposed in this invention includes a washing machine door assembly 100 comprising: a door body 10 and a hinge 20. The hinge 20 has a hinge plate 21 fixed to the washing machine casing and a hinge reinforcing plate 22 fixed inside the door body 10. The door body 10 has an inner frame 11, a middle frame 12, an outer frame (not shown in the figure), a window glass (not shown in the figure), and a window screen (not shown in the figure). The hinge reinforcing plate 22 is located outside the middle frame 12, and a first fixing structure passing through the middle frame 12 is provided between the hinge reinforcing plate 22 and the inner frame 11. By setting a hinge reinforcement plate 22, the structure is simplified and installation is easier. By setting the hinge reinforcement plate 22 on the outside of the middle frame 12 and setting the first fixing structure, the hinge reinforcement plate 22 is fixed together with the inner frame 11 and the middle frame 12, which helps to improve the structural strength, increase the firmness after fixing, prevent the hinge from loosening, and reduce the wear of the washing machine door 10. When the door 10 is subjected to external impact, the impact force is transmitted to the middle frame 12 and the inner frame 11 through the hinge, which helps to improve the door 10's ability to withstand impact forces.

[0039] In some embodiments of this application, the first fixing structure 31 has a first fixing post 111 extending outward along the inner frame 11, a first mounting hole 221 on the hinge reinforcing plate 22 that mates with the first fixing post 111, and a through hole 121 on the middle frame 12 for the first fixing post 111 to pass through. By placing the middle frame 12 on the inner frame 11, allowing the first fixing post 111 to pass through the through hole 121, and then fixing the middle frame 12 to the inner frame 11 with screws; then placing the hinge reinforcing plate 22 on the outside of the middle frame 12, and fastening it to the first fixing post 111 with screws through the first mounting hole 221; thus fixing the hinge reinforcing plate 22, the inner frame 11, and the middle frame 12 together.

[0040] In some embodiments of this application, see Figure 10 and Figure 12As shown, a first limiting rib 112 is axially arranged on the outer side of the first fixed post 111, and a first limiting groove 122 is provided on the middle frame 12 to match the first limiting rib 112 and achieve limiting. The first limiting groove 122 is connected to the through hole 121. By setting the first limiting rib 112 and the first limiting groove 122, the first fixed post 111 cannot rotate within the through hole 121, which helps to ensure the stability of the first fixed post 111 within the through hole 121; and it also helps to increase the contact area between the first fixing structure and the middle frame 12, which helps to improve the stress resistance.

[0041] In some embodiments of this application, a plurality of first limiting ribs 112 are provided on the outer side of the first fixing post 111, and the first limiting ribs 112 are arranged radially. A plurality of first fixing posts 111 are provided on the inner frame 11, and a plurality of first limiting ribs 112 are provided on the outer side of each first fixing post 111. The radial extension directions of the plurality of limiting ribs 112 between two first fixing posts 111 are at least not completely the same, that is, the radial extension directions of the plurality of limiting ribs 112 between two first fixing posts 111 are all different, or some are the same, but some are definitely different; this ensures that the first fixing structure and the middle frame 12 can withstand forces in different directions, which is beneficial to ensuring the fixing stability between the first fixing structure and the middle frame 12, and also ensures the stability of the hinge reinforcing plate 22, the inner frame 11 and the middle frame 12 being fixed as one unit; it avoids the door assembly 100 from sagging and increases the stress performance.

[0042] In some embodiments of this application, a guide edge 222 is provided on the hinge reinforcing plate 22, surrounding the outside of the first mounting hole 221. The guide edge 222 and the first mounting hole 221 are coaxially arranged, and the guide edge 222 is located outside the first fixing post 111. By providing the guide edge 222, it is beneficial to align and position the first fixing structure, so that after the hinge reinforcing plate 22 is placed outside the middle frame 12, the first mounting hole 221 and the first fixing post 111 are aligned, and can be fastened with screws. The guide edge 222 is adjacent to the middle frame 12, which helps to increase the structural strength of the first fixing structure and makes the hinge reinforcing plate 22 and the middle frame 12 in adjacent contact. An inclined guide surface is provided on the inner side of the end of the guide edge 222 near the middle frame 12. The inclined guide surface is used to guide the first fixing post 111 into the guide edge 222, so that the first fixing post 111 is positioned in place.

[0043] In some embodiments of this application, see Figure 8As shown, the hinge reinforcement plate 22 has a first adjacent portion 225 adjacent to the middle frame 12 and a second adjacent portion 226 adjacent to the inner frame 11. A first fixing structure is provided between the second adjacent portion 226 of the hinge reinforcement plate 22 and the inner frame 11. By providing the first adjacent portion 225 and the second adjacent portion 226, a part of the hinge reinforcement plate 22 is in adjacent contact with the middle frame 12, and another part of the hinge reinforcement plate 22 is in adjacent contact with the inner frame 11, which helps to increase the firmness of the hinge reinforcement plate 22 after it is fixed. The first fixing structure realizes the connection and fixation between the hinge reinforcement plate 22, the middle frame 12 and the inner frame 11, and the second fixing structure realizes the connection and fixation between the hinge reinforcement plate 22 and the inner frame 11.

[0044] In some embodiments of this application, the second fixing structure has a second fixing post 113 extending outward along the inner frame 11, and a second mounting hole 223 on the hinge reinforcing plate 22 that mates with the second fixing post 113; the hinge reinforcing plate 22 and the inner frame 11 are fixed by passing screws through the second mounting hole 223 and fastening them to the second fixing post 113, and the second mounting hole 223 is located in the second adjacent part.

[0045] In some embodiments of this application, a flange 115 extending outwards is provided on the side of the inner frame 11 away from the axis of the door body 10. A support protrusion 224 extending outwards is provided on the side of the hinge reinforcement plate 22 away from the axis of the door body 10. A support groove 1151 matching the support protrusion 224 is provided on the flange 115, and the support protrusion 224 is located within the support groove 1151. The outer end of the flange 115 is flush with the outer end of the hinge reinforcement plate 22. A flange structure that mates with the flange 115 is provided on the outer frame, forming a cavity between the outer frame and the inner frame 11, with the middle frame 12 and the hinge reinforcement plate 22 located within the cavity. By providing the support protrusion 224 and the support groove 1151, the edge of the hinge reinforcement plate 22 is located on the flange 15, which helps to increase the stability and firmness of the hinge reinforcement plate 22. The side of the hinge reinforcement plate 22 away from the axis of the door body 10 matches and abuts the side of the flange 115 near the axis of the door body.

[0046] In some embodiments of this application, the hinge 20 further includes a hinge arm 211 fixed on the hinge plate 21, an avoidance slot 114 for avoiding the hinge arm 211 on the inner frame 11, and an avoidance groove 224 for avoiding the hinge arm 211 on the hinge reinforcing plate 22; the avoidance slot 114 and the avoidance groove 224 are arranged adjacent to each other in the inward and outward directions; by providing the avoidance slot 114 and the avoidance groove 224, the hinge arm 211 extends from the inner side of the inner frame 11 to the outer side of the hinge reinforcing plate 22, thereby realizing the hinge between the hinge arm 211 and the hinge reinforcing plate 22.

[0047] In some embodiments of this application, an inner extension protrusion 2241 located within a clearance slot 114 is provided at the support protrusion 224 of the hinge reinforcing plate 22. A first mating groove 1153 that mates with the end of the inner extension protrusion 2241 is provided at at least one side of the flange 115 of the clearance slot 114. A second mating groove 1152 is provided on the outer side of the flange 115 at both ends of the clearance slot 114. An extension protrusion 2242 that continues to extend is provided at the support protrusion 224 of the hinge reinforcing plate 11, and the extension protrusion 2242 is located within the second mating groove 1152. The extension protrusion 2242 is located outside the inner extension protrusion 2241, and the inner extension protrusion 2242 and the extension protrusion 2242 are flush on the side away from the axis of the door body 10.

[0048] In some embodiments of this application, a third limiting rib 123 for defining the hinge reinforcing plate 22 is provided on the middle frame 12. The third limiting rib 123 surrounds the corner of the hinge reinforcing plate 22. By providing the third limiting rib 123, the stability of the hinge reinforcing plate 22 after it is fixed is improved. The third limiting rib 123 has a surrounding rib 1231 and a plurality of reinforcing ribs 1323 arranged perpendicularly to the surrounding rib 1231. The surrounding rib 1231 surrounds the corner of the hinge reinforcing plate 22, and the reinforcing ribs 1323 are located on the side away from the hinge reinforcing plate 22 and arranged vertically.

[0049] In some embodiments of this application, the inner frame 11 is provided with a second limiting rib 116 extending outward to limit the hinge reinforcement plate 22. The hinge reinforcement plate 22 is provided with a corner slot 227, and the second limiting rib 116 is located within the corner slot 227. By providing two first limiting ribs 123 and two second limiting ribs 116, all four corners of the hinge reinforcement plate 22 are limited, which is beneficial to the stability of the hinge reinforcement plate 22 after it is fixed.

[0050] In some embodiments of this application, the hinge 20 further has a hinge shaft 23 disposed between the hinge reinforcing plate 22 and the hinge plate 21, a first hinge hole 212 for the hinge shaft 23 to pass through is provided on the hinge arm 211, and a second hinge hole 228 for the hinge shaft 23 to pass through is provided on the hinge reinforcing plate 22. Example 2

[0051] This embodiment is a washing machine, which includes a cabinet and a door assembly hinged to the cabinet. See [link / reference] Figures 1 to 14As shown, the door assembly 100 includes a door body 10 and a hinge 20. The hinge 20 has a hinge plate 21 fixed to the washing machine cabinet and a hinge reinforcing plate 22 fixed inside the door body 10. The door body 10 has an inner frame 11, a middle frame 12, an outer frame (not shown in the figure), a window glass (not shown in the figure), and a window screen (not shown in the figure). The hinge reinforcing plate 22 is located outside the middle frame 12, and a first fixing structure passing through the middle frame 12 is provided between the hinge reinforcing plate 22 and the inner frame 11. By setting a hinge reinforcement plate 22, the structure is simplified and installation is easier. By setting the hinge reinforcement plate 22 on the outside of the middle frame 12 and setting the first fixing structure, the hinge reinforcement plate 22 is fixed together with the inner frame 11 and the middle frame 12, which helps to improve the structural strength, increase the firmness after fixing, prevent the hinge from loosening, and reduce the wear of the washing machine door 10. When the door 10 is subjected to external impact, the impact force is transmitted to the middle frame 12 and the inner frame 11 through the hinge, which helps to improve the door 10's ability to withstand impact forces.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed by the present invention.

Claims

1. A washing machine door assembly, characterized in that, include: Door body; A hinge, which is hinged to the door body; The hinge has a hinge plate fixed to the washing machine cabinet and a hinge reinforcement plate fixed to the door body; The door has an inner frame and a middle frame, the hinge reinforcement plate is located outside the middle frame, and a first fixing structure passing through the middle frame is provided between the hinge reinforcement plate and the inner frame; The first fixing structure has a first fixing post extending outward along the inner frame, a first mounting hole that mates with the first fixing post on the hinge reinforcing plate, and a through hole for the first fixing post to pass through on the middle frame; an axially arranged first limiting rib is provided on the outer side of the first fixing post, and a first limiting groove that matches the first limiting rib to achieve limiting is provided on the middle frame, the first limiting groove communicating with the through hole; a plurality of first limiting ribs are provided on the outer side of the first fixing post, the first limiting ribs extending radially; a plurality of first fixing posts are provided on the inner frame, and the radial extension directions of the plurality of first limiting ribs between two first fixing posts are at least not completely the same.

2. The door assembly according to claim 1, characterized in that, The hinge reinforcement plate has a first adjacent portion adjacent to the middle frame and a second adjacent portion adjacent to the inner frame. A second fixing structure is provided between the guide edge of the hinge reinforcement plate and the inner frame. The second fixing structure has a second fixing post extending outward along the inner frame and a second mounting hole that cooperates with the second fixing post on the hinge reinforcement plate. The second mounting hole is located in the second adjacent portion.

3. The door assembly according to claim 1 or 2, characterized in that, A bend extending outward is provided on the side of the inner frame away from the axis of the door body. A support protrusion extending outward is provided on the side of the hinge reinforcement plate away from the axis of the door body. A support groove matching the support protrusion is provided on the bend, and the support protrusion is located in the support groove.

4. The door assembly according to claim 3, characterized in that, The hinge also has a hinge arm fixed to the hinge plate, and an avoidance groove for avoiding the hinge arm is provided on the inner frame. An inner extension protrusion located in the avoidance groove is provided at the support protrusion of the hinge reinforcing plate. A first mating groove that mates with the end of the inner extension protrusion is provided at the flange on at least one side of the avoidance groove. A second mating groove is provided on the outer side of the flange at both ends of the avoidance groove. An extension protrusion that continues to extend is provided at the support protrusion of the hinge reinforcing plate. The extension protrusion is located in the second mating groove.

5. The door assembly according to claim 1 or 2, characterized in that, The middle frame is provided with a third limiting rib for defining the hinge reinforcement plate, and the third limiting rib surrounds the corner of the hinge reinforcement plate.

6. The door assembly according to claim 5, characterized in that, The third limiting rib has a surrounding rib and a plurality of reinforcing ribs arranged perpendicular to the surrounding rib.

7. A washing machine having a housing and a door assembly as described in any one of claims 1 to 6, hinged to the housing.

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