Surface cleaning system

Abstract

The utility model belongs to the technical field of cleaning, and particularly provides a surface cleaning system which comprises cleaning equipment and a floor brush. The cleaning equipment comprises a machine body and a floor brush, the lower end of the machine body is pivoted with the floor brush, a sewage tank is arranged on the machine body, a clean water tank is mounted on the floor brush, a containing disc for at least containing part of the floor brush is arranged on the upper surface of the base station, and a limiting structure and an electric connection structure are arranged between the lower surface of the floor brush and the containing disc. The limiting structure and / or the electric connection structure are / is arranged at the rear part of the lower surface of the floor brush close to the supporting wheel; one of the limiting structure and the electric connection structure is arranged between the two supporting wheels, and the other one is arranged on the front side of one supporting wheel.

Description

Technical Field

[0001] The utility model belongs to the technical field of cleaning appliances, and specifically provides a surface cleaning system. Background Art

[0002] The surface cleaning system includes a cleaning device that can move along the surface to be cleaned and a base station. The base station has a tray for accommodating the cleaning device, and the cleaning device includes a body and a floor brush. The lower part of the body is pivotally connected to the floor brush, and a roller brush is provided on the floor brush. Usually, the floor brush is placed in the tray, and the body is in a vertically forward tilted self-locking state relative to the floor brush, and a part of the vertical projection of the body is outside the floor brush. A socket is provided on the rear side of the lower part of the body, and a base is provided on the upper surface of the base station. The base is plugged into the socket to provide charging and support functions for the body and the floor brush.

[0003] Chinese patent CN202020570084.3-A cleaning device for an electric mop discloses a cleaning bucket with a cleaning chamber, in which a cleaning component corresponding to the cleaning turntable of the electric mop is provided, and a wiping head is provided on the barrel wall at the front and rear ends of the cleaning bucket, respectively, and inwardly convex limit platforms are provided on the limit platforms, and relatively set limit surfaces are provided on the limit platforms, and a limit column is provided between the limit surfaces, and a limit groove corresponding to the limit column is provided at the bottom of the main body of the electric mop. This solution is achieved by providing a limit column and a pair of relatively set limit surfaces, and arranging the limit column in the area where the two limit surfaces are opposite, so that the positioning point of the limit column is located between the two limit surfaces. When placing the electric mop, the user can easily and quickly achieve positioning whether it is based on the limit column or the limit surface.

[0004] However, since the above-mentioned electric mop does not have a dirt suction system, there is no problem of the center of gravity of the body and the floor brush changing due to the water transfer position when the electric mop is automatically cleaning. When the surface cleaning device with a dirt suction system and a water supply system is placed in the tray of the base station for automatic cleaning, the clean water tank in the floor brush supplies water to the roller brush and the weight gradually decreases, and the sewage tank on the body absorbs sewage and the weight gradually increases, thereby causing the center of gravity of the whole machine to move up. If only a simple limit structure is added to the bottom of the floor brush and the base station, it still cannot avoid the problem of the floor brush becoming lighter and tilting up due to the upward shift of the center of gravity of the whole machine, or the problem of the body shaking or even leaning back during the cleaning process due to the increase in weight of the body, and may even cause the whole body to tip over backward. Utility Model Content

[0005] The purpose of the utility model is to provide a surface cleaning system which can prevent the center of gravity of the floor brush from moving upward and the front end of the floor brush from tilting up when the floor brush is self-cleaning in the receiving tray through the support of a limiting structure and / or an electrical connection structure, thereby preventing the entire body from tipping over backward.

[0006] In order to achieve the above-mentioned objectives, one or more embodiments of the utility model provide a surface cleaning system, including a cleaning device and a base station, the cleaning device including a body and a floor brush, the lower end of the body is pivotally connected to the floor brush, a sewage tank is provided on the body, a clean water tank is installed on the floor brush, the upper surface of the base station has a accommodating plate for accommodating at least part of the structure of the floor brush, a limiting structure and an electrical connection structure are provided between the lower surface of the floor brush and the accommodating plate, two support wheels are provided on the left and right sides of the rear part of the floor brush, the limiting structure and / or the electrical connection structure are provided in the area near the support wheels at the rear part of the lower surface of the floor brush; one of the limiting structure and the electrical connection structure is provided between the two support wheels, and the other is provided on the front side of one of the support wheels.

[0007] In at least one embodiment, the limiting structure includes a guide groove and a guide column. The guide groove is arranged between two supporting wheels at the rear of the floor brush, and the guide column is arranged on the upper surface of the accommodating plate. The guide groove and the guide column are plugged together to realize the limiting of the floor brush and the accommodating plate.

[0008] In at least one embodiment, the electrical connection structure is arranged on the front side of one of the support wheels, and the electrical connection structure includes a first electrical connector arranged on the lower surface of the floor brush and a second electrical connector arranged on the accommodating plate, and the first electrical connector and the second electrical connector can be plugged together.

[0009] In at least one embodiment, a first limit member is further provided on the front side of another supporting wheel, the installation position of the first limit member and the electrical connection structure are symmetrical with respect to the center plane of the floor brush along the front-to-back direction, and a second limit member cooperating with the first limit member is provided on the accommodating plate.

[0010] In at least one embodiment, the first limiting member is a limiting column, and the second limiting member is a limiting groove plugged into and matched with the limiting column.

[0011] In at least one embodiment, the floor brush has a center plane along the front-to-back direction, and the distance between the supporting wheel and the center plane is greater than the distance between the first limiting member and the center plane.

[0012] In at least one embodiment, the first electrical connector is a charging pin, and the second electrical connector has a plurality of contact pieces, the contact pieces enclose a socket with an open upper end, and the contact pieces can clamp the charging pin.

[0013] In at least one embodiment, the front side of the floor brush has a side wall cover plate, the side wall cover plate is located at both ends of the floor brush along the left and right directions, the front end of the accommodating plate has a guide surface, the guide surface extends from the front end of the accommodating plate in an oblique downward direction toward the rear end of the accommodating plate, and the guide surface is used to support the side wall cover plate.

[0014] In at least one embodiment, the number of the guide surfaces is two, and the two guide surfaces are respectively located on both sides of the accommodating tray along the left-right direction.

[0015] In at least one embodiment, the guide surface includes an integrally formed flat plate segment and an arc segment, the flat plate segment is located on a side away from the center of the support plate, and the inner arc surface of the arc segment is arranged upward.

[0016] Beneficial effects of one or more of the above technical solutions:

[0017] In this solution, a sewage bucket is provided on the body, and a clean water tank is provided on the floor brush. In the process of placing the floor brush on the receiving tray of the base station and using the receiving tray to support the entire cleaning device, the clean water in the clean water tank gradually decreases and the sewage in the sewage bucket gradually increases and decreases, thereby causing the center of gravity of the floor brush and even the entire cleaning device to move upward. The limiting structure and / or the electrical connection structure are arranged in the area near the support wheel at the rear of the lower surface of the floor brush, and one of the limiting structure and the electrical connection structure is arranged between the two support wheels, and the other is arranged on the front side of one of the support wheels. This allows the limiting structure and the two support wheels to form a stable triangular support area, and / or the electrical connection structure and the two support wheels to form a stable triangular support area. The triangular support area can use the limiting structure and / or the electrical connection structure to achieve the stop of the rear part of the floor brush, so as to limit the front end of the floor brush from tilting upward due to the upward shift of the center of gravity, thereby avoiding the body from tipping backward due to the upward shift of the center of gravity after the water in the clean water tank is transferred to the sewage tank, so that the floor brush can be stably placed in the receiving tray of the base station to achieve roller brush self-cleaning.

[0018] During the self-cleaning process of the cleaning component on the floor brush, the electrical connection structure forms a support limit point between the floor brush and the base station, and the support point cooperates with the two support wheels to form a stable triangular support area; another limit structure cooperates with the two support wheels to form another stable triangular support area. Under the action of the two triangular support areas, the cleaning component in front of the floor brush can be more firmly positioned in the cleaning groove of the accommodating plate.

[0019] At the same time, as the water in the clean water tank of the floor brush is gradually transferred to the sewage bucket during the cleaning process, the floor brush becomes lighter, and the sewage in the sewage bucket increases and becomes heavier. When the surface cleaning device is placed on the base station for automatic cleaning, there is a large angle of less than 90° between the fuselage and the floor brush, that is, the fuselage is set forward at a small angle. Therefore, as the sewage in the sewage bucket increases, the weight of the fuselage increases. Under the support of the two triangular support areas, the gravity of the fuselage is transferred to the electrical connection structure or the limiting structure, so that the contact between the electrical connection structures is closer and more stable, and the limiting structure cooperates more tightly, so the electrical connection effect is good, so that the effective charging time of the surface cleaning device is sufficient, and fast and stable charging can be achieved after self-cleaning is completed. In addition, the limiting structure and / or the electrical connection structure can achieve reliable stop between the floor brush and the receiving plate through the triangular support area to reduce the vibration of the floor brush and the fuselage, and reduce the noise during the self-cleaning process of the floor brush.

[0020] (2) The limiting structure in this solution includes a guide groove and a guide column. The guide groove is arranged between the two support wheels at the rear of the floor brush, and the guide column is arranged on the upper surface of the receiving plate. The guide groove and the guide column are plugged together to achieve the limiting of the floor brush and the receiving plate. This arrangement allows the guide column and the guide groove to form a support point between the area near the support wheel at the rear of the floor brush and the receiving plate, which facilitates the use of the support point and the two support wheels to form a triangular support area, and then the triangular support area is used to limit the front end of the floor brush from tilting upward due to the upward shift of the center of gravity, thereby preventing the body from tipping backward, so that the floor brush can be stably in the receiving plate of the base station to achieve roller brush self-cleaning.

[0021] (3) In this solution, the electrical connection structure is arranged on the front side of one of the support wheels, and the electrical connection structure includes a first electrical connection member arranged on the lower surface of the floor brush and a second electrical connection member arranged on the receiving plate and plugged into the first electrical connection member. This arrangement makes it easy to use the electrical connection structure to increase the stop-and-limit effect of the floor brush and the base at one of the support wheels, and further avoid the problem of the front end of the floor brush tilting up or even the body overturning due to the upward shift of the center of gravity during the self-cleaning process of the cleaning device.

[0022] (4) In this solution, a first limiter is provided at the front side of another supporting wheel, a second limiter is provided on the receiving plate to cooperate with the first limiter, and the first limiter and the electrical connection structure are symmetrical. This arrangement enables the limiter structure, the electrical connection structure and the first limiter to realize three-point support and limit on the lower surface of the floor brush, which is convenient for improving the stability of the floor brush during the self-cleaning process at the base, and further avoiding the problem of the front end of the floor brush tilting or even the body overturning.

[0023] (5) In this solution, the first limiting member is a limiting column, and the second limiting member is a limiting groove. This arrangement facilitates the use of the plug-in fit of the limiting column and the limiting groove to reduce the difficulty of the two limiting members in the limited position, thereby achieving quick plug-in fit of the two limiting members.

[0024] (6) In this solution, the support wheel is located at the rear side of the first limiter, and the distance between the support wheel and the center plane is greater than the distance between the first limiter and the center plane. This arrangement makes it easy to make the support wheel and the first limiter have different positions in the left and right directions of the machine body, so that the lower surface of the floor brush is supported more evenly, and the support wheel is used to increase the support points between the floor brush and the receiving plate, so that the floor brush is more stably supported inside the receiving plate.

[0025] (7) In this solution, the first electrical connector includes a charging pin, and the second electrical connector has a plurality of contact pieces, which enclose a socket with an upper opening, and the contact pieces can clamp the charging pin. This arrangement can use the contact pieces at the socket to clamp the charging pin, thereby avoiding the problem of poor contact between the first electrical connector and the second electrical connector caused by the vibration of the floor brush during the self-cleaning process.

[0026] (8) In this solution, the front end of the receiving tray has a guide surface, which extends from the front end of the receiving tray toward the rear end of the receiving tray in an oblique downward direction, and the guide surface is used to support the side wall cover on the front side of the floor brush. When the user lifts the body to lift the floor brush off the ground, the front end of the floor brush will tilt downward due to the force of gravity, so that the lower end of the side wall cover at the front end of the body is at the lowest position of the entire floor brush. In this solution, by providing a guide surface at the front end of the receiving tray, the floor brush can achieve a guiding effect through the contact between the guide surface and the side wall cover when it just contacts the receiving tray, which facilitates timely adjustment of the relative position of the floor brush and the receiving tray, thereby achieving preliminary positioning of the two in the guide groove and the guide column before contact, reducing the difficulty of alignment between the two.

[0027] (9) In this solution, guide surfaces are respectively provided on the left and right sides of the receiving plate. The two guide surfaces facilitate cooperation with the side wall covers at both ends of the floor brush to guide the floor brush in the left and right directions when it falls, further improving the alignment of the guide column and the guide groove, thereby facilitating plug-in.

[0028] (10) In the present solution, the top of the guide column is higher than the top of the limit column. This arrangement enables the guide column to first contact the floor brush, and the guide column is used to achieve initial support and guidance of the floor brush. Then, the position of the floor brush can be gradually adjusted and supported by successively plugging the guide column and the limit column. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Some embodiments of the present application are described below with reference to the accompanying drawings, in which:

[0030] Figure 1 It is a schematic diagram of the overall structure in an embodiment of the utility model;

[0031] Figure 2 is a top view of a base station in an embodiment of the utility model;

[0032] Figure 3 It is a bottom view of the floor brush in the embodiment of the utility model;

[0033] Figure 4 It is an axonometric schematic diagram of a floor brush in an embodiment of the utility model;

[0034] Figure 5 is an axonometric schematic diagram of a base station in an embodiment of the utility model;

[0035] Figure 6 It is an axonometric diagram of a base station in another structural form in an embodiment of the utility model;

[0036] Figure 7 It is a schematic diagram of the side wall cover plate of the floor brush in the embodiment of the utility model just contacting with the guide surface;

[0037] Figure 8It is a full cross-sectional view of the floor brush in the embodiment of the utility model when it is placed in the receiving tray;

[0038] Fig. 9 is a side view of a base station in an embodiment of the utility model;

[0039] Fig.10 is another cross-sectional view of the floor brush in the embodiment of the utility model when it is placed in the receiving tray;

[0040] Fig.11 It is a schematic diagram of the coordination between the charging pin and the contact piece in the embodiment of the utility model;

[0041] Fig.12 It is an axonometric schematic diagram of a base station in the prior art.

[0042] Reference numerals: 1, handle; 2, handle bar; 3, body; 31, sewage tank; 4, floor brush; 5, base station;

[0043] 40. Side wall cover; 41. Roller brush; 42. Front wheel; 43. First electrical connector; 431. Charging needle; 44. Support wheel; 45. Mounting port; 46. Guide groove; 47. Blocking plate; 48. Limiting groove; 49. Clean water tank;

[0044] 50. Boss; 51. Support wheel groove; 52. Second electrical connector; 521. Contact piece; 53. Front wheel groove; 54. Guide surface; 541. Plane section; 542. Arc section; 55. Accommodating plate; 56. Limiting column; 57. Guide column; 58. Tray; 59. Base; 591. Charging plug. DETAILED DESCRIPTION

[0045] Those skilled in the art should understand that the embodiments described below are merely preferred embodiments of the present application, which are merely used to explain the technical principles of the present application and are not used to limit the protection scope of the present application.

[0046] It should be noted that in the description of this application, the terms "center", "upper", "lower", "top", "bottom", "vertical", "horizontal", "inner", "outer" and other terms indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as a limitation on this application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0047] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0048] The surface cleaning device of this embodiment is a floor scrubber; alternatively, the surface cleaning device may also be other devices such as a handheld vacuum cleaner.

[0049] See also Fig.12 In the prior art, a tray 58 is formed on the front side of the upper surface of the base station 5, and a base 57 protruding upward from the base 57 is provided on the rear side, and a charging plug 571 is provided on the upper end of the base 57. The upper end of the base 57 is much higher than the upper surface of the tray 58. When in use, the floor brush of the cleaning device is placed in the tray 58 on the front side of the base station 5, and the lower end of the body of the cleaning device is pivotally connected to the floor brush. The lower rear side of the body is protruding backwards and is provided with a socket, which is used to be plugged into the charging plug 571. However, when the body is thinned and the pivot point moves forward relative to the floor brush, when the vertical projection of the body falls into the floor brush, the setting of the base station 57 will cause positional interference with the placement of the floor brush in the tray 58.

[0050] like Figure 1-Figure 11 As shown, in order to realize the support of the floor brush 4 and the body 3 at the rear side in the surface cleaning device, and to avoid the problem that the front end of the floor brush 4 is tilted or even the body 3 falls backwards due to the upward movement of the center of gravity of the cleaning device when the clean water in the clean water tank 49 is reduced and the weight of the sewage tank 31 on the body 3 is increased during the self-cleaning process of the floor brush 4: This embodiment provides a surface cleaning system, including a cleaning device and a base station 5 for storing the cleaning device, the cleaning device includes a body 3 and a floor brush 4, the lower end of the body 3 and the floor brush 4 are pivotally connected, the body 3 is provided with a sewage tank 31, the floor brush 4 is installed with a clean water tank 49, the upper surface of the base station 5 has a receiving plate 55 for receiving at least part of the structure of the floor brush 4, a limiting structure and an electrical connection structure are provided between the lower surface of the floor brush 4 and the receiving plate 55, two support wheels 44 are provided on the left and right sides of the rear of the floor brush 4, and the limiting structure and / or the electrical connection structure are provided in the area near the support wheel 44 at the rear of the lower surface of the floor brush 4. One of the limiting structure and the electrical connection structure is provided between the two support wheels 44, and the other is provided on the front side of one of the support wheels 44.

[0051] Specifically, the upper end of the body 3 is provided with a handle bar 2 and a handle 1, and the base station 5 is fixed relative to the position of the working area to be cleaned, and the base station 5 is at least connected to an external power source. In order to enable the body 3 to rotate relative to the floor brush 4 to approximately 180 degrees, so that the body 3 is in a flat state: in this embodiment, the thickness of the body 3 in the front and rear directions is thinner, and the pivot point position of the body 3 and the floor brush 4 is transferred from the rear end of the floor brush 4 to the middle and rear part of the floor brush 4. Figure 1 When the fuselage 3 rotates relative to the floor brush 4 to a roughly vertical and forward-leaning state (at this time, the angle between the central axis of the fuselage 3 and the plane where the floor brush 4 is located is slightly less than 90 degrees), the entire vertical projection of the fuselage 3 falls into the interior of the floor brush 4, and thus the fuselage 3 no longer protrudes outward from the floor brush 4 in the front-to-back direction.

[0052] During normal cleaning, the user controls the entire floor brush 4 and the cleaning device to move forward, backward, and turn left and right through the handle 1. When cleaning is completed, the user lifts the handle 1 to lift the entire floor brush 4 off the ground, lifts and transfers the cleaning device to the top of the receiving tray 55 of the base station 5, and then drops the floor brush 4 into the receiving tray 55. After the floor brush 4 drops into the receiving tray 55, it is supported by the base station 5, and the body 3 is rotated to a state of being roughly vertically tilted forward relative to the floor brush 4, and self-locked through the locking protrusion and locking position between the body 3 and the floor brush 4. The self-locking of the body 3 relative to the floor brush 4 is a prior art and will not be described in detail here.

[0053] The above-mentioned that the accommodating tray 55 at least accommodates part of the structure of the floor brush 4 should be understood as: in the vertical height, the floor brush 4 is completely inside the accommodating tray 55, or part of the structure of the floor brush 4 is higher than the accommodating tray 55.

[0054] When the floor brush 4 falls to the receiving tray 55, the limiting structures on the upper surface of the receiving tray 55 will first abut against each other, and then as the floor brush 4 continues to fall, the upper surface of the receiving tray 55 contacts with other structures at the lower end of the floor brush 4 to achieve support for the floor brush 4, and the body 3 is self-locked relative to the floor brush 4. When the roller brush 41 in the floor brush 4 rotates to perform self-cleaning of the cleaning device: the self-rotation of the roller brush 41 and the weight reduction of the clean water tank 49 at the floor brush and the weight increase of the sewage tank 31 at the body cause the center of gravity of the floor brush to move upward, which will cause the front end of the floor brush 4 to vibrate and tend to tilt upward. The tendency of the front end of the floor brush 4 to tilt upward will be limited by the limiting structure and / or the electrical connection structure at the rear of the floor brush 4 near the support wheel position in this solution, thereby avoiding the problem of the entire device rotating backward and the body 3 being out of the forward tilt self-locking and tilting backward caused by the front end of the floor brush 4 tilting upward.

[0055] In this solution, the limiting structure and the two support wheels 44 form a stable triangular support area, and / or the electrical connection structure and the two support wheels 44 form a stable triangular support area. The triangular support area can use the limiting structure and / or the electrical connection structure to achieve the stop of the rear of the floor brush 4, so as to limit the front end of the floor brush 4 from tilting upward due to the upward shift of the center of gravity, thereby preventing the body 3 from tipping backward due to the upward shift of the center of gravity after the water in the clean water tank 49 is transferred to the dirty water tank 31, so that the floor brush 4 can be stably placed in the receiving tray of the base station 5 to achieve roller brush self-cleaning.

[0056] Specifically, the limiting structure includes a guide groove 46 and a guide column 57. The guide groove 46 is provided between the two supporting wheels 44 at the rear of the floor brush 4. The guide column 57 is provided on the upper surface of the receiving plate 55. The guide groove 46 and the guide column 57 are plugged and matched to achieve the limiting of the floor brush 4 and the receiving plate 55. Preferably, in the limiting structure, the guide groove 46 is located at the central axis of the lower surface of the floor brush 4 along the left-right direction, and the guide column 57 is located at the central axis of the receiving plate 55 along the left-right direction.

[0057] Specifically, the floor brush 4 includes an upper shell and a lower shell, which are enclosed by the upper and lower shells to form a mounting cavity for the floor brush 4. The rear portion of the floor brush 4 has a mounting opening 45 that runs through the floor brush 4 from top to bottom, and the mounting opening 45 is used to be placed in the lower end of the body 3. The lower end of the body 3 is connected to the side walls on the left and right sides of the mounting opening 45 through a pivot. Figure 3 and Figure 4 The lower surface of the lower shell of the floor brush 4 also has an upward concave pipe groove, which extends forward from the mounting opening 45 to the scraper and the suction port of the roller brush 41, and the pipe groove is used to accommodate the flexible suction pipe extending from the lower end of the body 3 of the mounting opening 45 to the suction port on the front side of the floor brush 4. In order to protect the suction pipe, a detachable fixed plugging plate 47 is fixed on the pipe groove, and the plugging plate 47 is flush with the lower surface of the floor brush 4, and a part of the structure of the plugging plate 47 extends backward to the bottom of the mounting opening 45.

[0058] In the case of the blocking plate 47, in order to make the guide groove 46 on the lower surface of the floor brush 4 as far back as possible, the guide groove 46 is arranged at the rear end of the blocking plate 47. Furthermore, in the case where the blocking plate 47 is relatively thin, the guide groove 46 of this embodiment can be arranged through the blocking plate 47, and then after the floor brush 4 is placed on the receiving plate 55 of the base station 5, the upper end of the guide column 57 is inserted upward into the guide groove 46 and extends into the installation opening 45.

[0059] See also Figure 5 , Figure 7 and Figure 8, along the direction from top to bottom, the cross-sectional areas of the guide column 57 and the guide groove 46 gradually increase. The guide column 57 here is a cone-like shape, and in some other embodiments, it can be a quadrangular pyramid or a hexagonal bar or other shapes. Correspondingly, the cross-sectional shape and size of the guide groove 46 are adapted to the guide column 57, which is a circle, a square, a regular hexagon, etc.

[0060] It can be known that after the pivot point between the body 3 and the floor brush 4 is transferred to the middle and rear part of the floor brush 4, because the mounting port 45 and the tube groove at the rear part of the floor brush 4 must be avoided: the electrical connection structure in this embodiment cannot be set at the center of the floor brush 4 along the left-right direction, and it is not convenient to integrate the electrical connection structure with the guide column 57 and the guide groove 46 in the same position to save space.

[0061] In order to achieve a stable electrical connection between the floor brush 4 and the base station 5, in this embodiment, the electrical connection structure is arranged on the front side of one of the support wheels 44, and the electrical connection structure includes a first electrical connection member 43 arranged on the lower surface of the floor brush 4 and a second electrical connection member 52 arranged on the receiving plate 55, and the first electrical connection member 43 and the second electrical connection member 52 can be plugged in and matched. A first limiter is also provided on the front side of the other support wheel 44, and the installation position of the first limiter and the electrical connection structure is symmetrical with respect to the center plane of the floor brush 4 along the front-to-back direction, and a second limiter cooperating with the first limiter is provided on the receiving plate 55. Specifically, the first limiter here is a limiter column 56, and the second limiter is a limiter groove 48.

[0062] The first electrical connector 43 at the floor brush 4 avoids the center line of the floor brush 4, so that the first electrical connector 43 and the limiting groove 48 are symmetrically arranged on both sides of the center plane of the floor brush 4 to avoid the influence of the installation port 45 and the pipeline groove on the wiring of the first electrical connector 43. Figure 3 At this time, the first electrical connector 43, the limiting groove 48 and the guide groove 46 are distributed in a Chinese-shaped shape on the lower surface of the floor brush 4, which is convenient for cooperating with the second electrical connector 52, the limiting column 56 and the guide column 57 distributed in a Chinese-shaped shape on the upper surface of the base station 5 to realize three-point positioning support, thereby increasing the stability of the support and positioning of the floor brush 4 in the accommodating plate 55.

[0063] See also Figure 5 and Fig. 9 In this embodiment, the top of the guide post 57 is higher than the top of the limit post 56. Specifically, the lower end surfaces of the guide post 57 and the limit post 56 are basically flush, but there is a large difference in the vertical height of the guide post 57 and the limit post 56. This arrangement allows the floor brush 4 to first contact the guide groove 46 and the guide post 57 for preliminary alignment when it falls to the receiving plate 55. Then, when the guide post 57 is inserted into the guide groove 46 to a set depth, the limit groove 48 and the limit post 56 will contact, thereby completing the further insertion and alignment process of the two.

[0064] Similarly, the cross-sectional dimensions of the limiting column 56 and the limiting groove 48 of this embodiment also gradually decrease from bottom to top. Preferably, the upper ends of the limiting column 56 and the guide column 57 are both rounded, which can prevent the limiting column 56 and the guide column 57 from colliding with the corresponding structure on the lower surface of the floor brush 4 and causing scratches.

[0065] More specifically, Figure 5 The upper end of the guide post 57 shown in the figure has a smaller cross-sectional dimension than the limiting post 56, and the dimension decreases more from bottom to top. The smaller cross-sectional dimension of the upper end of the guide post 57 will reduce the structural strength of the upper end of the guide post 57, but will reduce the difficulty of the initial positioning of the floor brush 4 and the receiving plate 55. The upper end of the limiting post 56 has a relatively larger cross-sectional dimension, which can increase its overall structural strength, and the floor brush 4 has been initially positioned by the guide post 57, so its positioning difficulty is relatively small. This setting method facilitates balancing the requirements of the guide post 57 and the limiting post 56 for positioning difficulty and structural strength.

[0066] See also Figure 6 In some other structural settings, the positions of the electrical connection structure and the limiting structure can be interchanged. Specifically, the electrical connection structure is disposed between the two support wheels 44, the limiting structure is disposed on the front side of one of the support wheels 44, and the first limiting member and the second limiting member are disposed on the front side of the other support wheel 44. At this time, along the front-to-back direction of the floor brush 4, the limiting structure is located in front of the electrical connection structure. More specifically, the first limiting member, the second limiting member and the limiting structure have the same structural setting, and are symmetrically arranged with respect to the center plane of the floor brush and the base along the front-to-back direction. For example Figure 6 Two guide columns with the same structure are arranged on the upper surface of the receiving plate of the base 5, and a guide groove is arranged on the lower surface of the floor brush 4. Alternatively, the structural arrangement of the first limiter, the second limiter and the limiter structure may also be different, and only the installation position is symmetrical with respect to the center plane of the floor brush and the base in the front-back direction.

[0067] It is known that when the user lifts the body 3 to lift the floor brush 4 off the ground, the front end of the floor brush 4 will tilt downward due to the force of gravity, so that the front end of the floor brush 4 is low and the rear end is high. The front side of the floor brush 4 has a side wall cover 40, which is located at both ends of the floor brush 4 in the left and right direction. That is to say, when the floor brush 4 is lifted up and suspended in the air, the lower end of the side wall cover 40 at the front end of the body 3 is basically at the lowest position of the entire floor brush 4.

[0068] In order to achieve the alignment of the floor brush 4 and the receiving tray 55 as soon as they contact, a guide surface 54 is provided at the front end of the receiving tray 55. The guide surface 54 extends from the front end of the receiving tray 55 in an oblique downward direction toward the rear end of the receiving tray 55. The guide surface 54 is used to support the side wall cover plate 40. This enables the contact between the guide surface 54 and the side wall cover plate 40 to achieve a guiding effect, facilitates timely adjustment of the relative position of the floor brush 4 and the receiving tray 55, and then achieves the initial positioning of the two in the guide groove 46 and the guide column 57 before contact, reducing the difficulty of alignment between the two.

[0069] Specifically, there are two guide surfaces 54, and the two guide surfaces 54 are respectively located on both sides of the accommodating plate 55 along the left-right direction. When the guide surfaces 54 are respectively provided at the left and right ends of the accommodating plate 55, and the two guide surfaces 54 are respectively in contact with the side wall cover plates 40 on the left and right sides of the floor brush 4, the guide surfaces 54 facilitate the initial positioning of the floor brush 4 along the left-right direction, thereby reducing the difficulty of the guide column 57 and the guide groove 46 being inserted and aligned.

[0070] More specifically, the guide surface 54 includes an integrally formed flat section and an arc section 542, the flat section is located on the side away from the center of the support plate, and the inner arc surface of the arc section 542 is arranged upward. That is, the upper end of the side wall cover plate 40 first contacts the inclined surface of the flat section 541, and then under the action of gravity, the side wall cover plate 40 will slide down to the arc section 542 together with the floor brush 4, and the upper surface of the arc section 542 and the arc portion of the side wall cover plate 40 fit each other, increasing the contact area between the guide surface 54 and the arc cover plate, thereby improving the stability of the side wall cover plate 40 when supported by the guide surface 54. This arrangement also facilitates improving the smoothness of the side wall cover plate 40 at the front end of the floor brush 4 contacting the guide surface 54 and sliding down along the guide surface 54 to position.

[0071] See also Figure 3 and Figure 5 As shown, the two support wheels 44 on the lower surface of the floor brush 4 are symmetrical about the center plane of the floor brush 4 along the front-to-back direction. Along the front-to-back direction of the floor brush 4, the support wheel 44 is located at the rear side of the limiting groove 48, and the distance between the support wheel 44 and the center plane is greater than the distance between the limiting groove 48 and the center plane. Correspondingly, a support wheel groove 51 for accommodating the support wheel 44 is provided at the receiving plate 55, and the front end of the support wheel groove 51 has a protrusion extending upward, and the upper surface of the protrusion is an arc surface that fits the support wheel 44, and the upper end of the protrusion is higher than the upper surface of the receiving plate 55 to limit the support wheel 44 of the floor brush 4 from moving toward the front side of the receiving plate 55.

[0072] When the distance between the support wheel 44 and the center plane is greater than the distance between the limiting groove 48 and the center plane, the two support wheels 44 can expand the supported area of ​​the lower part of the floor brush 4 and improve the supported stability of the floor brush 4. In addition, the lower surface of the floor brush 4 is also provided with two front wheels 42 symmetrical about the center plane, and the upper surface of the receiving plate 55 is provided with a front wheel groove 53. Specifically, Figure 3Schematic diagram showing the cooperation of the guide column 57, the limit column 56, the first electrical connector 43, the two support wheels 44 and the two front wheels 42 to achieve seven-point support.

[0073] In this embodiment, the first electrical connector 43 includes a charging pin 431 , and the second electrical connector 52 has a plurality of contact pieces 521 . The contact pieces 521 enclose a socket with an upper opening, and the contact pieces 521 can clamp the charging pin 431 .

[0074] See also Figure 3 , Figure 5 and Fig.11 , one end of the charging needle 431 is inserted into the inner cavity of the floor brush 4 and connected to the corresponding electrical component, and the other end of the charging needle 431 extends downward from the lower surface of the floor brush 4. The second electrical connector 52 includes a base body, and the upper end of the base body has a plurality of openings, each of which is provided with a plurality of contact sheets 521, and the plurality of contact sheets 521 enclose a socket, and the contact sheets 521 are configured as an elastic structure. When the contact sheets 521 are not under pressure, the size of the socket formed by adjacent contact sheets 521 is smaller than the outer diameter of the charging needle 431; when the charging needle 431 is inserted into the socket formed by adjacent contact sheets 521, the contact sheet 521 is compressed and deformed, but will be pressed tightly against the outer side of the charging needle 431.

[0075] In this embodiment, two contact pieces 521 may be disposed in the opening of a single seat body, or three or other numbers of contact pieces 521 may be disposed.

[0076] It is known that a signal transmission module can be integrated in the first electrical connector 43 and the second electrical connector 52. For example, two charging pins 431 and two signal pins are arranged in parallel, two of the buckles of the second electrical connector 52 are used to insert the signal pins, and the other two sockets are used to insert the charging pins 431.

[0077] In this embodiment, the height of the upper surface of the receiving plate 55 gradually decreases from the rear side to the front side of the base station 5. Figure 7 , the height change of the upper surface of the receiving tray 55 makes the floor brush 4 also roughly low on the front side and high on the rear side. This arrangement makes it easy to drain the water stains on the upper surface of the floor brush 4 and the receiving tray 55 to the front end of the receiving tray 55 through the inclined surface, and store them uniformly for subsequent cleaning. In addition, a boss 50 higher than the receiving tray 55 is provided on the upper surface of the base station 5. Corresponding electrical components are arranged inside the boss 50, and the concave cavity on the upper surface of the boss 50 can hold the parts disassembled from the sewage bucket in the body 3 such as HEPA.

[0078] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments of the foregoing text, but it is easy for those skilled in the art to understand that the protection scope of the present application is not limited to the above preferred embodiments. Without departing from the technical principles of the present application, those skilled in the art may split and combine the technical solutions in the above preferred embodiments, and may also make equivalent changes or replacements to the relevant technical features, and any changes, equivalent replacements, improvements, etc. made within the technical concept and / or technical principles of the present application will fall within the protection scope of the present application.

Claims

1. A surface cleaning system, comprising a cleaning device and a base station for storing the cleaning device, wherein the cleaning device comprises a body and a floor brush, the lower end of the body is pivotally connected to the floor brush, a sewage tank is provided on the body, a clean water tank is installed on the floor brush, and the upper surface of the base station has a receiving tray for receiving at least part of the floor brush structure, characterized in that: A limiting structure and an electrical connection structure are provided between the lower surface of the floor brush and the accommodating plate; two supporting wheels are provided on the left and right sides of the rear portion of the floor brush; the limiting structure and / or the electrical connection structure are provided in an area close to the supporting wheels at the rear portion of the lower surface of the floor brush; one of the limiting structure and the electrical connection structure is provided between the two supporting wheels, and the other is provided on the front side of one of the supporting wheels.

2. The surface cleaning system according to claim 1, characterized in that The limiting structure includes a guide groove and a guide column. The guide groove is arranged between two supporting wheels at the rear of the floor brush. The guide column is arranged on the upper surface of the accommodating plate. The guide groove and the guide column are plugged together to achieve the limiting of the floor brush and the accommodating plate.

3. The surface cleaning system according to claim 1, characterized in that The electrical connection structure is arranged on the front side of one of the support wheels, and includes a first electrical connection member arranged on the lower surface of the floor brush and a second electrical connection member arranged on the accommodating plate, and the first electrical connection member and the second electrical connection member can be plugged in and matched.

4. The surface cleaning system according to claim 3, characterized in that A first limiting member is also provided on the front side of the other supporting wheel. The installation position of the first limiting member and the electrical connection structure is symmetrical with respect to the center plane of the floor brush along the front-to-back direction. A second limiting member cooperating with the first limiting member is provided on the accommodating plate.

5. The surface cleaning system according to claim 4, characterized in that The first limiting member is a limiting column, and the second limiting member is a limiting groove plugged into and matched with the limiting column.

6. The surface cleaning system according to claim 3, characterized in that The floor brush has a center plane along the front-to-back direction, and the distance between the supporting wheel and the center plane is greater than the distance between the first limiting member and the center plane.

7. The surface cleaning system according to claim 3, characterized in that The first electrical connector is a charging pin, and the second electrical connector has a plurality of contact pieces, which enclose a socket with an upper opening, and the contact pieces can clamp the charging pin.

8. The surface cleaning system of claim 1, wherein: The front side of the floor brush has a side wall cover plate, which is located at both ends of the floor brush in the left and right directions. The front end of the accommodating plate has a guide surface, which extends from the front end of the accommodating plate in an oblique downward direction toward the rear end of the accommodating plate, and the guide surface is used to support the side wall cover plate.

9. The surface cleaning system according to claim 8, characterized in that The number of the guide surfaces is two, and the two guide surfaces are respectively located on both sides of the accommodating tray along the left-right direction.

10. The surface cleaning system of claim 8, wherein: The guide surface comprises an integrally formed flat plate segment and an arc segment, the flat plate segment is located on a side away from the center of the support plate, and the inner arc surface of the arc segment is arranged upward.

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