Cleaning machine

Abstract

The cleaning machine comprises an inner container (1), the inner container (1) is provided with a rear wall plate (11), and a part of area of the rear wall plate (11) is sunken towards the interior of the inner container (1) to form an avoiding area (110); the rear cover plate (7) is arranged on the side, away from the interior of the inner container (1), of the rear wall plate (11) in a covering mode, the middle of the rear cover plate (7) is sunken away from the rear wall plate (11) to form a sunken area (71), and part of the sunken area (71) corresponds to the avoiding area (110); and the driving motor (8) is located in a space defined by the avoiding area (110) and the sunken area (71). According to the cleaning machine, the depth is proper, so that the situation that installation is inconvenient due to the too large depth is avoided, meanwhile, the space of the inner container is increased, and the processing capacity of the cleaning machine is improved.

Description

Technical Field

[0001] The utility model generally relates to the technical field of kitchen equipment, and in particular to a cleaning machine. Background Art

[0002] In the cleaning machine product, the inner cavity of the cleaning machine is blown during the drying stage to improve the drying effect of the cleaning machine.

[0003] In the prior art, a rear cover is installed on the rear wall of the cleaning machine to protect the internal electronic control system, heating pipes, fans, and disinfection components. However, the installation of the rear cover and the placement of the aforementioned functional components in the cleaning machine in the prior art results in a large depth, making installation inconvenient. Furthermore, while maintaining the depth, the internal tank space is sacrificed, resulting in a small processing capacity of the cleaning machine. Utility Model Content

[0004] The present application hopes to provide a cleaning machine, which defines a space for installing a drive motor between the avoidance area of ​​the rear wall plate and the recessed area of ​​the rear cover plate, which is conducive to reducing the overall thickness of the rear cover plate, thereby reducing the depth of the cleaning machine, while not sacrificing the inner tank space, ensuring that the cleaning machine has a higher inner tank space.

[0005] The utility model provides a cleaning machine, comprising:

[0006] The inner container 1 has a rear wall 11 , and a portion of the rear wall 11 is recessed toward the interior of the inner container 1 to form an escape area 110 ;

[0007] The rear cover plate 7 is covered on the rear wall plate 11 and is located outside the inner container 1. The middle portion of the rear cover plate 7 is recessed away from the rear wall plate 11 to form a recessed area 71. Part of the recessed area 71 is corresponding to the avoidance area 110.

[0008] The drive motor 8 is located inside the space defined by the avoidance area 110 and the recessed area 71 .

[0009] As a feasible manner, the recessed area 71 includes an opening and a bottom surface 711 , and the bottom surface 711 is provided with a reinforcing profile 712 for at least reinforcing the strength of the rear cover 7 , and the reinforcing profile 712 is recessed from the bottom surface 711 toward the opening.

[0010] As an achievable manner, the reinforced profile 712 is at least circumferentially arranged along the bottom surface 711 to form a closed ring.

[0011] As a feasible method, the reinforced pressure profile 712 has a support surface 713 close to the rear wall panel 11, and the cleaning machine also includes an elastic support member 10, which is located between the support surface 713 and the rear wall panel 11, and one end of the elastic support member 10 passes through the support surface 713 and is in close contact with the rear wall panel 11.

[0012] As a feasible method, the elastic support member 10 includes an installation segment 101, a fixed segment 102 and a support segment 103 adjacent to each other in sequence. In the extension direction from the support segment 103 to the installation segment 101, the installation segment 101 is a cone or a truncated cone. The fixed segment 102, the installation segment 101 and the support segment 103 are projected on the same plane. The installation segment 101 is located in the projection area where the support segment 103 is located, and the fixed segment 102 is located in the projection area where the installation segment 101 is located.

[0013] As a feasible method, a first mounting hole 714 is opened on the support surface 713. Under the action of external force, the mounting section 101 passes through the first mounting hole 714, the fixing section 102 cooperates with the first mounting hole 714, and the opposite end surfaces of the support section 103 respectively support the surface 713 and the rear wall panel 11 in close contact.

[0014] As a feasible method, an installation area 72 is further provided on the rear cover 7, and the installation area 72 is located at least on two opposite sides of the recessed area 71. A first connecting member 721 is provided on the installation area 72. The cleaning machine has a side panel B1, and a first matching portion M1 is provided on the side panel B1. The first connecting member 721 cooperates with the first matching portion M1.

[0015] As a feasible method, the cleaning machine also includes fasteners, a through hole 722 is opened in the installation area 72, and a fixing hole M2 is opened on the side panel. The fasteners pass through the through hole 722 and the fixing hole M2 in sequence, and the rear cover plate 7 is fixed on the side of the rear wall plate 11 facing away from the interior of the inner tank 1.

[0016] As an implementable manner, a plurality of heat dissipation holes 715 are defined on the bottom surface 711 of the recessed area 71 .

[0017] As an implementable manner, a plurality of heat dissipation holes 715 are provided on the bottom surface 711 of the recessed area 71 at least in an area corresponding to the circuit board of the cleaning machine.

[0018] The cleaning machine of the present invention forms an avoidance area by recessing part of the rear wall plate of the inner tank toward the interior of the inner tank. The rear cover plate is arranged on the rear wall plate and is located outside the inner tank. The area on the rear cover plate corresponding to the avoidance area is recessed away from the rear wall plate to form a recessed area. In this way, an installation space is defined between the recessed area and the avoidance area. The drive motor and other components are located inside the installation space. On the one hand, it provides installation space for the drive motor and other components. On the other hand, it is conducive to reducing the overall thickness of the rear cover plate, thereby reducing the depth of the cleaning machine, saving the installation space of the cleaning machine, and reducing the requirements for the installation space. At the same time, the inner tank space is not sacrificed, ensuring that the cleaning machine has a higher inner tank space, which is conducive to improving the processing capacity of the cleaning machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Other features, objects and advantages of the present application will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0020] Figure 1 A perspective view of a cleaning machine (door not shown) provided in an embodiment of the present utility model;

[0021] Figure 2 A three-dimensional diagram of a cleaning machine provided by an embodiment of the present utility model ( Figure 1 rear view);

[0022] Figure 3 A three-dimensional diagram of a cleaning machine provided by an embodiment of the present utility model ( Figure 1 Rear view, rear cover not shown);

[0023] Figure 4 A schematic structural diagram of the rear cover of a cleaning machine provided by an embodiment of the present utility model;

[0024] Figure 5 A schematic diagram of the partial structure of the rear cover and rear cavity wall of the cleaning machine provided by an embodiment of the utility model;

[0025] Figure 6 This is a schematic structural diagram of the elastic support member of the cleaning machine provided in an embodiment of the utility model.

[0026] In the figure,

[0027] Inner tank 1, rear wall panel 11, avoidance area 110, fan 2, heating pipe 3, water pipe 4;

[0028] Rear cover 7, recessed area 71, bottom surface 711, reinforced profile 712, support surface 713, first mounting hole 714, heat dissipation hole 715, mounting area 72, first connecting member 721, first mating portion M1, through hole 722, fixing hole M2, drive motor 8, elastic support member 10, mounting section 101, fixing section 102, supporting section 103, side panel B1. DETAILED DESCRIPTION

[0029] The present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the relevant utility model and are not intended to limit the utility model. It should also be noted that, for ease of description, only the portions relevant to the utility model are shown in the accompanying drawings.

[0030] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] At least see Figure 1-6As shown, an embodiment of the present application provides a cleaning machine, comprising:

[0032] The inner container 1 has a rear wall 11 , and a portion of the rear wall 11 is recessed toward the interior of the inner container 1 to form an escape area 110 ;

[0033] The rear cover plate 7 is covered on the rear wall plate 11 and is located outside the inner container 1. The middle portion of the rear cover plate 7 is recessed away from the rear wall plate 11 to form a recessed area 71. Part of the recessed area 71 is corresponding to the avoidance area 110.

[0034] The drive motor 8 is located inside the space defined by the avoidance area 110 and the recessed area 71 .

[0035] It is understandable that the cleaning machine can be but is not limited to a dishwasher, which can be used to clean kitchen utensils and other items such as bowls, cutlery, and dishes. Of course, the cleaning machine of the embodiment of the present application can also have functions such as disinfection and drying, freeing hands and improving the user experience.

[0036] Among them, the inner tank 1 is used as the main body of the washing machine to accommodate and place kitchen utensils or other items to be cleaned; in actual application, in order to improve the cleaning ability of the dishwasher, the inner tank 1 is arranged in the up and down directions (such as Figure 1 At least two spray arms and a water pipe 4 are provided (in the direction shown in the figure), and are connected through the water pipe 4 provided in the inner tank 1 to supply water to different spray arms.

[0037] The rear wall panel 11 refers to the wall panel located at the rear of the inner tank 1. In order to realize the cleaning, drying, disinfection and other functions of the cleaning machine, the rear wall panel 11 is usually provided with functional components such as a drive motor 8. In order to ensure that the rear of the cleaning machine has a smaller depth and reduce the size of the cleaning machine in the front-to-back direction, a part of the rear wall panel 11 is recessed toward the interior of the inner tank 1 to form an escape area 110. The escape area 110 is conducive to the installation of functional components such as the drive motor 8, so as to ensure that the cleaning machine has a smaller depth while reducing the impact on the volume of the inner tank 1. Among them, the rear wall panel 11 and the inner tank 1 can be integrally formed. Of course, the rear wall panel 11 and the inner tank 1 can also be connected by any connection method, such as but not limited to welding, riveting or clamping, etc. The embodiments of the present application do not make specific limitations on this.

[0038] It is understood that the rear cover 7 is provided on the rear wall 11 and outside the inner container 1, and is mainly used to protect functional components such as the drive motor 8. The rear cover 7 can be provided on the entire rear wall 11, which is conducive to beautifying the overall appearance and structure of the cleaning machine. Of course, the rear cover 7 can also be provided on a portion of the rear wall 11, that is, the rear cover 7 is only provided on the rear wall 11 corresponding to the area where the drive motor 8 and other functional components are provided, which simplifies the structure of the rear cover 7 and saves costs.

[0039] Among them, a recessed area 71 is formed on the rear cover plate 7, and the recessed area 71 is arranged corresponding to the avoidance area 110 of the rear wall plate 11. The recessed area 71 is mainly used to define an installation space with the avoidance area 110, and functional components such as the drive motor 8 are located inside the installation space; the rear cover plate 7 and the rear wall plate 11 can be connected by any connection method, such as but not limited to welding or sheet metal stamping; of course, in a preferred embodiment, the rear cover plate 7 and the rear wall plate 11 are connected by a detachable connection method, which is conducive to the disassembly and assembly of the rear cover plate and convenient for the maintenance of functional components such as the drive motor 8.

[0040] In actual processing, in order to reduce the depth of the cleaning machine, the rear cover plate 7 can adopt an ultra-thin structure. In this way, the formation of the recessed area 71 is beneficial to defining the installation space on the one hand, and is beneficial to improving the structural strength of the rear cover plate 7 on the other hand.

[0041] The drive motor 8 can be used to drive the fan 2, thereby driving the fan 2 to operate and deliver hot air to the interior of the inner tank 1, thereby realizing the drying function of the washing machine. The drive motor 8 can be any type of motor, such as but not limited to a servo motor. In a preferred embodiment, the drive motor 8 is a flat motor, which has a relatively thin structure, which helps save installation space and facilitates reducing the size of the installation space defined between the rear wall plate and the rear cover plate of the washing machine during the processing and design of the washing machine. This helps to reduce the rear dimension of the washing machine, further reducing the depth of the washing machine, and facilitating the installation of the washing machine.

[0042] The cleaning machine of the embodiment of the present application solves the problems of large depth, inconvenient installation and reduction of the inner tank space in the existing cleaning machine to ensure the depth. The cleaning machine of the embodiment of the present application forms an escape area by recessing part of the rear wall plate of the inner tank toward the inside of the inner tank. The rear cover is arranged on the rear wall plate and is located outside the inner tank. The area on the rear cover corresponding to the escape area is recessed away from the rear wall plate to form a recessed area. In this way, an installation space is defined between the recessed area and the escape area. The drive motor and other components are located inside the installation space. On the one hand, it provides installation space for other components such as the drive motor. On the other hand, it is conducive to reducing the overall thickness of the rear cover, thereby reducing the depth of the cleaning machine, saving the installation space of the cleaning machine, and reducing the requirements for the installation space. At the same time, the inner tank space is not sacrificed, ensuring that the cleaning machine has a higher inner tank space, which is conducive to improving the processing capacity of the cleaning machine.

[0043] As an achievable method, Figure 4 As shown, the recessed area 71 includes an opening and a bottom surface 711 . The bottom surface 711 is provided with a reinforcing profile 712 for at least reinforcing the strength of the rear cover 7 . The reinforcing profile is recessed from the bottom surface 711 toward the opening.

[0044] Specifically, the reinforced pressure profile 712 can be an annular groove formed by being recessed from front to back in a local area of ​​the bottom surface 711. Alternatively, the reinforced pressure profile 712 can be an annular protrusion formed by being raised from back to front in a local area of ​​the bottom surface 711. The embodiments of the present application do not limit this, and the specific determination is based on actual needs.

[0045] The reinforcement profile 712 may be one, two, or more than one. For example, when two or more reinforcement profiles are formed on the recessed area 71, a portion of the reinforcement profiles are annular grooves that are recessed from front to back in a local area of ​​the bottom surface 711, and the remaining reinforcement profiles 712 are annular protrusions that are protruded from back to front in a local area of ​​the bottom surface 711.

[0046] In some embodiments, when the rear cover plate 7 is formed by a stamping process, the reinforced press profile 712 can be formed by stamping.

[0047] In this embodiment, the rigidity and strength of the rear cover 7 can be enhanced by reinforcing the press profile 712, while also ensuring the flatness of the bottom surface 711 of the recessed area 71, thereby preventing the recessed area 71 from being squeezed onto functional components such as the drive motor 8 due to deformation, thereby ensuring the normal operation of the cleaning machine and extending the service life of the cleaning machine.

[0048] In a preferred embodiment, the reinforced profile 712 is at least circumferentially arranged along the bottom surface 711 to form a closed ring.

[0049] The reinforced profile 712 in this embodiment is formed into a closed ring, which is conducive to convenient processing on the one hand, and is conducive to improving the strength and rigidity of the rear cover plate 7 on the other hand, and can ensure the flatness of the bottom surface 711 of the recessed area 71.

[0050] As a feasible method, the reinforced pressure profile 712 has a support surface 713 close to the rear wall panel 11, and the cleaning machine also includes an elastic support member 10, which is located between the support surface 713 and the rear wall panel 11, and one end of the elastic support member 10 passes through the support surface 713 and is in close contact with the rear wall panel 11.

[0051] It is understood that the elastic support member 10 can be, but is not limited to, a support column made of a spring, rubber, or silicone material. The elastic support member 10 is located between the support surface of the reinforced pressure profile 712 and the rear wall plate 11, which is conducive to reliably supporting the rear cover 7, thereby ensuring that even if the rear cover of the cleaning machine is squeezed, the presence of the elastic support member 10 will prevent the rear cover from being significantly deformed, thereby preventing squeezing of functional components such as the drive motor 8, and ensuring that the rear cover 7 has a reliable protective effect.

[0052] Among them, the end of the elastic support member 10 is in close contact with the rear wall plate 11, that is, the end of the elastic support member 10 is in direct contact with the end surface of the rear wall plate 11; of course, in some embodiments, a groove can also be formed on the surface of the rear wall plate 11 facing the rear cover plate 7, and the end of the elastic support member 10 is limited in the groove and in close contact with the bottom of the groove, which is conducive to stabilizing the limiting position of the elastic support member 10 and avoiding the end displacement of the elastic support 10 due to extrusion, resulting in the elastic support member 10 being unable to reliably support the rear cover plate 7.

[0053] In this embodiment, the elastic support member 10 is easy to install and can reliably support the rear cover plate 7, ensuring that the rear cover plate has a reliable protective effect.

[0054] In some embodiments, such as Figure 6 As shown, the elastic support member 10 includes a mounting section 101, a fixed section 102 and a support section 103 adjacent to each other in sequence. In the extension direction from the support section 103 to the mounting section 101, the mounting section 101 is a frustum or a truncated cone. The fixed section 102, the mounting section 101 and the support section 103 are projected on the same plane. The mounting section 101 is located in the projection area where the support section 103 is located, and the fixed section 102 is located in the projection area where the mounting section 101 is located.

[0055] It can be understood that the installation section 101 facilitates the installation of the elastic support member 10 on the rear cover plate 7, and the fixing section 102 and the installation holes on the support surface 713 are mutually limited, so that the elastic support member 10 and the rear cover plate 7 are stably installed. After the installation section 101 passes through the support surface 713, the fixing section 102 and the support surface 713 are mutually limited and fixed, and the end of the support section 103 is in close contact with the rear wall panel 11.

[0056] In this embodiment, in the extension direction from the support section 103 to the installation section 101, the installation section 101 is in the shape of a cone or a truncated cone. The installation section 101 is located within the projection area where the support section 103 is located, and the fixing section 102 is located within the projection area where the installation section 101 is located. This is conducive to facilitating the installation of the elastic support member 10, and at the same time is conducive to fixing the position of the elastic support member 10 and the rear cover plate 7.

[0057] As an achievable method, Figure 5 As shown, a first mounting hole 714 is opened on the support surface 713. Under the action of external force, the mounting section 101 passes through the first mounting hole 714, the fixing section 102 cooperates with the first mounting hole 714, and the opposite end surfaces of the support section 103 respectively support the surface 713 and the rear wall panel 11 in close contact.

[0058] In this embodiment, the first mounting hole 714 on the supporting surface 713 facilitates the installation of the elastic support member 10 and is also helpful in limiting and fixing the elastic support member 10 .

[0059] Among them, the first mounting hole 714 can be but not limited to circular, square, etc., and this is not limited in the embodiments of the present application. The first mounting hole 714 and the fixed section 102 of the elastic support member 10 limit each other. In this way, as long as the shapes of the first mounting hole 714 and the fixed section 102 of the elastic support member 10 match, mutual limitation can be achieved.

[0060] In actual processing, when installing the elastic support member 10, the fixing section 102 of the elastic support member 10 is inserted into the first mounting hole 714 through the deformation of the mounting section 101. After the elastic support member 10 is installed, the cross-sectional diagram of the rear cover 7 assembled on the cleaning machine is as shown in FIG. Figure 5 As shown, it can be obtained from Figure 5 It can be seen that one end face of the supporting section 103 of the elastic support member 10 rests on the rear wall plate 11, and the other end face rests on the surface of the rear cover plate 7 facing the rear wall plate 11. In this way, even if the rear of the cleaning machine is squeezed, due to the supporting effect of the elastic support member 10, the rear cover plate 11 will not be greatly deformed and will not contact the drive motor 8, thereby playing a protective role.

[0061] As an achievable method, Figure 3 and 4 As shown, the rear cover 7 is further provided with an installation area 72, which is located at least on two opposite sides of the recessed area 71. A first connecting member 721 is provided on the installation area 72. The cleaning machine has a side panel B1, and a first matching portion M1 is provided on the side panel B1. The first connecting member 721 matches with the first matching portion M1.

[0062] The mounting area 72 in this embodiment is mainly used to fix the rear cover plate 7 on the side plate of the cleaning machine to ensure reliable installation of the rear cover plate 7.

[0063] The mounting area 72 may be formed on two opposite sides of the recessed area 71 (eg Figure 1 The flanges are on opposite sides of the left and right directions, and the flanges are extended from the recessed area 71 toward a direction away from the recessed area 71.

[0064] The first connecting member 721 may be, but is not limited to, a hook, a stud, or a boss, etc.; correspondingly, the first matching portion M1 may be, but is not limited to, a hanging hole, a threaded hole, or a groove, etc.

[0065] When the rear cover 7 needs to be assembled, the first connecting piece 721 of the installation area 72 of the rear cover 7 is matched with the first matching part M1 on the side panel B1 of the cleaning machine, and the rear cover 7 is installed on the cleaning machine; when the rear cover 7 needs to be disassembled, the first connecting piece 721 of the installation area 72 of the rear cover 7 is separated from the first matching part M1 on the side panel B1 of the cleaning machine, and the rear cover 7 is separated from the cleaning machine.

[0066] As a feasible method, the cleaning machine also includes fasteners, a through hole 722 is opened in the installation area 72, and a fixing hole M2 is opened on the side panel. The fasteners pass through the through hole 722 and the fixing hole M2 in sequence, and the rear cover plate 7 is fixed on the side of the rear wall plate 11 facing away from the interior of the inner tank 1.

[0067] The fasteners may be, but are not limited to, bolts, screws or studs. When the rear cover 7 is placed on the rear wall 11, the fasteners pass through the through holes 722 and the fixing holes M2 in sequence, and the rear cover is stably fixed on the cleaning machine.

[0068] The fasteners, through holes 722 and fixing holes M2 in this embodiment are helpful in fixing the position of the rear cover plate 7 .

[0069] As an implementable manner, a plurality of heat dissipation holes 715 are defined on the bottom surface 711 of the recessed area 71 .

[0070] The heat dissipation holes 715 in this embodiment are beneficial to heat dissipation of the circuit board, the drive motor 8, the fan 2, the heating tube 3 or other functional components.

[0071] The heat dissipation holes 715 may be evenly distributed on the entire bottom surface 711 of the recessed area 71 . Of course, the heat dissipation holes 715 may also be distributed in a partial area of ​​the recessed area 71 .

[0072] In a preferred embodiment, a plurality of heat dissipation holes 715 are formed on the bottom surface 711 of the recessed area 71 at least in an area corresponding to the circuit board of the cleaning machine.

[0073] In this embodiment, the heat dissipation holes 715 are arranged in the area of ​​the recessed area corresponding to the circuit board, which is beneficial to improving the heat dissipation of the circuit board, ensuring the normal and reliable operation of the entire cleaning machine, and ensuring the strength of the rear cover 7.

[0074] In summary, the cleaning machine of the embodiment of the present application forms an escape zone by recessing a portion of the rear wall plate of the inner tank toward the interior of the inner tank. The rear cover is provided on the rear wall plate and is located outside the inner tank. The area of ​​the rear cover plate corresponding to the escape zone is recessed away from the rear wall plate to form a recessed area. Thus, an installation space is defined between the recessed area and the escape zone. The drive motor and other components are located inside the installation space. On the one hand, this provides installation space for the drive motor and other components. On the other hand, it is helpful to reduce the overall thickness of the rear cover plate, thereby reducing the depth of the cleaning machine, saving the installation space of the cleaning machine, reducing the requirements for the installation space, and at the same time, without sacrificing the inner tank space, ensuring that the cleaning machine has a larger inner tank space, thereby helping to increase the processing capacity of the cleaning machine.

[0075] In addition, an elastic support member is provided between the rear cover and the rear wall panel, which is conducive to reliably supporting the rear cover, thereby ensuring that even if the rear cover of the cleaning machine is squeezed, the rear cover will not undergo significant deformation due to the presence of the elastic support member, thereby avoiding squeezing of functional components such as the drive motor, and ensuring that the rear cover has a reliable protective effect.

[0076] It should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like used above to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0077] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but should also encompass other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the inventive concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A cleaning machine, characterized in that: include: An inner container (1), the inner container (1) having a rear wall plate (11), a portion of the rear wall plate (11) being recessed toward the interior of the inner container (1) to form an escape zone (110); a rear cover plate (7), the rear cover plate (7) being arranged on the rear wall plate (11) and being located outside the inner container (1), the middle portion of the rear cover plate (7) being recessed away from the rear wall plate (11) to form a recessed area (71), and a portion of the recessed area (71) being arranged corresponding to the avoidance area (110); A drive motor (8) is located inside a space defined by the avoidance area (110) and the recessed area (71).

2. The cleaning machine according to claim 1, characterized in that The recessed area (71) comprises an opening and a bottom surface (711); the bottom surface (711) is provided with a reinforcing profile (712) for at least reinforcing the strength of the rear cover plate (7); the reinforcing profile (712) is recessed from the bottom surface (711) toward the opening.

3. The cleaning machine according to claim 2, characterized in that The reinforced pressure profile (712) is at least circumferentially arranged along the bottom surface (711) to form a closed ring.

4. The cleaning machine according to claim 2, characterized in that The reinforced pressure type (712) has a support surface (713) close to the rear wall plate (11), and the cleaning machine also includes an elastic support member (10), the elastic support member (10) is located between the support surface (713) and the rear wall plate (11), and one end of the elastic support member (10) passes through the support surface (713) and is in close contact with the rear wall plate (11).

5. The cleaning machine according to claim 4, characterized in that The elastic support member (10) comprises a mounting section (101), a fixing section (102) and a supporting section (103) which are adjacent to each other in sequence. In the extension direction from the supporting section (103) to the mounting section (101), the mounting section (101) is in the form of a cone or a truncated cone. When the fixing section (102), the mounting section (101) and the supporting section (103) are projected onto the same plane, the mounting section (101) is located within the projection area where the supporting section (103) is located, and the fixing section (102) is located within the projection area where the mounting section (101) is located.

6. The cleaning machine according to claim 5, characterized in that A first mounting hole (714) is provided on the supporting surface (713). Under the action of an external force, the mounting section (101) passes through the first mounting hole (714), the fixing section (102) cooperates with the first mounting hole (714), and the two opposite end surfaces of the supporting section (103) are in close contact with the supporting surface (713) and the rear wall plate (11).

7. The cleaning machine according to any one of claims 1 to 6, characterized in that: The rear cover (7) is further provided with an installation area (72), the installation area (72) being located at least on two opposite sides of the recessed area (71), the installation area (72) being provided with a first connecting member (721), the cleaning machine having a side panel (B1), the side panel (B1) being provided with a first matching portion (M1), the first connecting member (721) being matched with the first matching portion (M1).

8. The cleaning machine according to claim 7, characterized in that The cleaning machine further comprises a fastener, the installation area (72) is provided with a through hole (722), the side panel is provided with a fixing hole (M2), the fastener passes through the through hole (722) and the fixing hole (M2) in sequence, and the rear cover (7) is fixed to the side of the rear wall panel (11) facing away from the interior of the inner tank (1).

9. The cleaning machine according to any one of claims 2 to 6, characterized in that: A plurality of heat dissipation holes (715) are provided on the bottom surface (711) of the recessed area (71).

10. The cleaning machine according to claim 9, characterized in that A plurality of heat dissipation holes (715) are provided on the bottom surface (711) of the recessed area (71), at least in an area corresponding to the circuit board of the cleaning machine.

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