Surface cleaning apparatus

Abstract

The invention discloses surface cleaning equipment. The surface cleaning equipment comprises a main machine and a cleaning head movably connected to the main machine. The cleaning head comprises a shell and a cover arranged on the shell, a suction cavity is defined by the shell and the cover jointly, and a stirrer used for cleaning the surface to be cleaned is arranged in the suction cavity. The cover body comprises a main body and an upper cover plate pivotally mounted on the main body, a scraping piece is arranged on the upper cover plate, and the scraping piece is arranged in front of the stirrer in the advancing direction. The driving structure is used for driving the upper cover plate to rotate around the rotating shaft structure so that the scraping piece can move between the first position and the second position. The scraping piece is configured to be far away from the surface to be cleaned at the first position; and at the second position, the scraping piece is in contact with the to-be-cleaned surface. By the adoption of the structure, when a user mops the floor in a reciprocating mode, water spots on the ground can be cleaned through the simple structure, and the cleaning effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning equipment, and in particular to a surface cleaning equipment. Background Art

[0002] Surface cleaning equipment generally includes a dirt recovery system, through which the surface to be cleaned is cleaned. In particular, wet cleaning equipment also includes a cleaning liquid supply system, which is used to spray cleaning liquid onto the surface to be cleaned or the wiped piece to improve cleaning efficiency.

[0003] Due to different habits of using vertical wet cleaning equipment, when the user always operates the wet cleaning equipment in the same direction (pushing the equipment forward), the surface cleaning equipment will have less water stains after cleaning. However, when cleaning the surface to be cleaned by reciprocating push and pull cleaning, there will be more water stains on the cleaning ground (especially the floor or floor tiles), affecting the cleaning effect. Summary of the invention

[0004] In view of the deficiencies existing in the above-mentioned technologies, the present invention provides a surface cleaning device to ensure that there are fewer water stains on the ground when wiping the ground back and forth, so as to improve the cleaning effect.

[0005] In one aspect, the present invention provides a surface cleaning device comprising A main unit and a cleaning head movably connected to the main unit; The cleaning head comprises a shell and a cover body arranged on the shell, wherein the shell and the cover body jointly define a suction chamber, wherein an agitator for cleaning the surface to be cleaned is arranged in the suction chamber; the cover body comprises a main body and an upper cover plate pivotally mounted on the main body, wherein a scraper is arranged on the upper cover plate, and the scraper is arranged in front of the agitator along the forward direction; a dirt recovery system, comprising a recovery box in fluid communication with the suction chamber, the recovery box being used to collect dirt; a cleaning liquid supply system, comprising a cleaning liquid tank and a supply pipeline in fluid communication with the cleaning liquid tank, the supply pipeline being used to supply cleaning liquid to the agitator and / or the surface to be cleaned; The driving structure is used to drive the upper cover plate to rotate around the rotating shaft structure so that the scraping member moves between a first position and a second position; the scraping member is configured such that: when in the first position, the scraping member is away from the surface to be cleaned; when in the second position, the scraping member is in contact with the surface to be cleaned.

[0006] Optionally, the cover body is detachably mounted on the shell, and a locking structure is provided on the cover body, through which locking and unlocking between the cover body and the shell can be achieved; the locking structure is at least partially arranged in the space jointly defined by the upper cover plate and the main body.

[0007] Optionally, the cleaning liquid supply system comprises a liquid distributor in fluid communication with the cleaning liquid tank, and the liquid distributor is arranged behind the agitator along the forward direction of the surface cleaning device.

[0008] Optionally, the cover body includes at least one rotating shaft structure, and the rotating shaft structure is arranged at a position between the scraping member and the driving structure along the forward direction.

[0009] Optionally, the driving structure includes a driving motor and a transmission structure, and the transmission structure can drive the upper cover plate to pivot relative to the main body under the action of the driving motor; a second through hole is opened on the shell, and the driving structure is arranged in an installation space defined by the shell, and the transmission structure directly / indirectly contacts the upper cover plate through the second through hole to drive the upper cover plate.

[0010] Optionally, a mounting plate is provided at the second through hole, and a sealing structure is provided between the mounting plate and the shell to prevent fluid from entering the mounting space from outside the shell through the second through hole.

[0011] Optionally, a comb tooth structure is installed on the liquid dispenser, and the comb tooth structure is located below the water outlet. The comb tooth structure is in contact with the agitator and is used to scrape off at least part of the dirt.

[0012] Optionally, one end of the comb tooth structure close to the water outlet can be pivotally mounted on the liquid dispenser, and a bias structure is provided between the comb tooth structure and the liquid dispenser, and the bias structure is configured to apply a force to the comb tooth structure toward the agitator.

[0013] Optionally, the cover body comprises a resetting device, which is configured to keep the cover body in the first position or the second position when the driving structure does not apply a force to the cover body.

[0014] Optionally, one of the main body or the upper cover is provided with a guide member, and the other is provided with a guide member that matches the guide member; the guide member matches with the guide member to limit the movement stroke of the upper cover relative to the main body.

[0015] The present invention provides a surface cleaning device, comprising a main body and a cleaning head movably connected to the main body. The cleaning head comprises a shell and a cover body arranged on the shell body, the shell and the cover body jointly define a suction chamber, and an agitator for cleaning the surface to be cleaned is arranged in the suction chamber; the cover body comprises a main body and an upper cover plate pivotally mounted on the main body, a scraper is arranged on the upper cover plate, and the scraper is arranged in front of the agitator along the forward direction. A dirt recovery system comprises a recovery box connected to the suction chamber fluid, and the recovery box is used to collect dirt. A cleaning liquid supply system comprises a cleaning liquid tank and a supply pipeline connected to the cleaning liquid tank fluid, and the supply pipeline is used to provide cleaning liquid to the agitator and / or the surface to be cleaned. A driving structure is used to drive the upper cover plate to rotate around the rotating shaft structure so that the scraper moves between a first position and a second position; the scraper is configured such that: in the first position, the scraper is away from the surface to be cleaned; in the second position, the scraper is in contact with the surface to be cleaned. By adopting the above structure, when the user uses the reciprocating mopping action, the water stains on the ground can be cleaned by a simple structure, thereby improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a vertical surface cleaning device in an embodiment of the present invention; Figure 2 is a schematic structural diagram of a cleaning head in an embodiment of the present invention; Figure 3 It is a schematic diagram of the structure in which the scraping member is located at the second position during the backward movement of the cleaning head; Figure 4 It is a structural schematic diagram of the scraping member being located at the first position during the forward movement of the cleaning head; Figure 5 This is a schematic diagram of the structure of the cover body in an embodiment of the present invention; Figure 6 This is a structural exploded view of the cover body in an embodiment of the present invention (at a first angle); Figure 7 This is a structural exploded view of the cover body in an embodiment of the present invention (at a second angle); Figure 8 It is a structural exploded view of the cover body in an embodiment of the present invention (at the third angle);.

[0017] Fig. 9 A diagram showing the positional relationship between the upper cover plate and the driving structure in an embodiment of the present invention; Fig.10 This is a schematic diagram of the structure in which the cleaning head hides the upper cover in the first embodiment; Fig.11 This is a schematic diagram of the structure in which the cleaning head hides the upper cover in the second embodiment; Fig.12 for Fig.11 A magnified view of the structure in the middle D region; Fig.13 It is a schematic structural diagram of a cleaning head showing the location of a driving structure in an embodiment of the present invention; Fig.14 for Fig.13 A magnified view of the structure of the middle C region; Fig.15 For along Figure 2 Cross-sectional view in the AA direction (cleaning head moves backward); Fig.16 for Fig.15 A magnified view of the structure in the middle B area; Fig.17 For along Figure 2 Cross-sectional view in the AA direction (cleaning head moving forward); Fig.18 For another embodiment, the cleaning head edge Figure 2 Cross-section view along the AA direction; Fig.19 for Fig.18 A magnified view of the structure in the middle E region; Fig. 20 Schematic diagram of the structure of the liquid dispenser in an embodiment of the present invention (at a first angle); Fig.21 for Fig. 20 Schematic diagram of the structure of the middle F area; Fig. 22 is a schematic structural diagram of a liquid dispenser in an embodiment of the present invention (at a second angle); Fig.23 It is a schematic diagram of the structure after the agitator of the cleaning head is removed from the driver; Fig.24 A schematic diagram of the structure of the cleaning head after the agitator is removed from the driver (the driving structure can be displayed); Fig.25 It is a schematic structural diagram of the cleaning head in the third embodiment. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] It should be noted that if a directional indication is involved in the embodiment of the present invention, the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0020] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0021] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0022] Figure 1 It is a schematic structural diagram of a vertical surface cleaning device in an embodiment of the present invention. Figure 2 Schematic diagram of the structure of the cleaning head in an embodiment of the present invention. Figure 3 It is a schematic structural diagram of the scraping member being located at the second position during the backward movement of the cleaning head. Figure 4 It is a schematic structural diagram of the scraping member being located at the first position during the forward movement of the cleaning head. Figure 5 Schematic diagram of the structure of the cover body in an embodiment of the present invention. Figure 6 It is a structural exploded view of the cover body in an embodiment of the present invention (at a first angle). Figure 7 It is a structural exploded view of the cover body in an embodiment of the present invention (at a second angle). Figure 8 It is a structural exploded view of the cover body in an embodiment of the present invention (at the third angle). Fig. 9 Schematic diagram of the position relationship between the upper cover plate and the driving structure in an embodiment of the present invention. Fig.10 This is a schematic diagram of the structure of the cleaning head hiding the upper cover in the first embodiment. Fig.11 This is a schematic diagram of the structure in which the cleaning head hides the upper cover in the second embodiment. Fig.12 for Fig.11 A magnified view of the structure in region D. Fig.13 It is a schematic structural diagram of a cleaning head showing the location of a driving structure in an embodiment of the present invention. Fig.14 for Fig.13 A magnified view of the structure of the middle C region. Fig.15 For along Figure 2 Cross-sectional view along the AA direction (cleaning head moves backward). Fig.16 for Fig.15 A magnified view of the structure in region B. Fig.17 For along Figure 2 Cross-sectional view along the AA direction (cleaning head moving forward). Fig.18 FIG. 4 is a cross-sectional view of a cleaning head along the AA direction in another embodiment. Fig.19 for Fig.18 A magnified view of the structure in region E. Fig. 20 Schematic diagram of the structure of the liquid dispenser in an embodiment of the present invention (at a first angle). Fig.21 for Fig. 20 Schematic diagram of the structure of the F region. Fig. 22 Schematic diagram of the structure of the liquid dispenser in an embodiment of the present invention (at a second angle). Fig.23 This is a schematic diagram of the structure after the agitator of the cleaning head is removed from the drive. Fig.24 This is a schematic diagram of the structure of the cleaning head after the agitator is removed from the drive (the drive structure can be displayed). Figure 1 , Figure 1 A surface cleaning device 100 is disclosed, comprising a main unit 101 and a cleaning head 102 movably connected to the main unit 101. The main unit 101 generally comprises a handle and a body connected to the handle, and a user can operate the surface cleaning device 100 through the handle. A display screen may be provided on the main unit 101 to display relevant information.

[0023] refer to Figure 2 , while referring to Fig.23 and 24 The cleaning head 102 includes a shell 1 and a cover body 9 arranged on the shell 1. The shell 1 and the cover body 9 can be assembled from multiple parts. The parts are generally plastic parts and / or metal parts. The plastic parts can be made by injection molding, and the metal parts can be made by die casting. The manufacturing process is also quite mature and will not be described in detail here. The shell 1 and the cover body 9 jointly define a suction chamber 5, and the suction chamber 5 is provided with an agitator 4 for cleaning the surface to be cleaned 7 (the agitator 4 shown in the figure is a roller brush). The structure and material of the roller brush will not be described in detail here, which are all well known to those skilled in the art. In one embodiment, the roller brush is driven by a driver 41, and the driver 41 can be arranged outside the roller brush. The driver 41 can also be arranged inside the roller brush (refer to Fig.18 ), one end of the driver 41 is rotatably connected to the shell 1, so that when the roller brush and the shell 1 are unlocked, the driver 41 can move in a direction away from the shell 1, so that the roller brush can be easily removed from the driver 41.

[0024] The surface cleaning device 100 generally includes a dirt recovery system and / or a cleaning liquid supply system. The dirt recovery system includes a recovery box connected to the fluid of the suction chamber 5, and the recovery box is used to collect dirt. The dirt recovery system may also include a suction motor, and the suction airflow generated by the suction motor can recover the dirt into the recovery box. Since the recovery system is a structure well known to those skilled in the art, it will not be described in detail here. The cleaning liquid supply system includes a cleaning liquid tank and a supply pipeline connected to the fluid of the cleaning liquid tank, and the supply pipeline is used to provide cleaning liquid to the agitator 4 and / or the surface to be cleaned 7. The cleaning liquid supply system may also include a water pump, through which the cleaning liquid in the cleaning liquid tank can be supplied to the agitator 4 or the surface to be cleaned 7. Reference Figure 20-22 The cleaning liquid supply system includes a liquid distributor 51 in fluid communication with the cleaning liquid tank, and the liquid distributor 51 is arranged behind the agitator 4 along the forward direction of the surface cleaning device 100. The liquid distributor 51 defines a passage ( Fig. 22 The water pipe 52 in the surface cleaning device 100 and the passage defined by the liquid distributor 51 together constitute a supply pipeline. The liquid distributor 51 is provided with a comb tooth structure 52, which is located below the water outlet 53. The comb tooth structure 52 is in contact with the agitator 4 and is used to scrape off at least part of the dirt. One end of the comb tooth structure 52 close to the water outlet 53 can be pivotally mounted on the liquid distributor 51 through a pivot shaft 54, and a biasing structure (not shown in the figure) is provided between the comb tooth structure 52 and the liquid distributor 51, and the biasing structure is configured to apply a force toward the agitator 4 to the comb tooth structure 52. The comb tooth structure 52 can move elastically within a range to ensure that the comb tooth structure 52 is always close to the roller brush to enhance the ability to remove dirt. The biasing structure can be a structure that can generate elastic force, such as a spring or a torsion spring.

[0025] refer to Figure 3-19 The cover body 9 includes a main body 91 and an upper cover plate 92 pivotally mounted on the main body 91, and a scraper 3 (also called a scraper strip) is arranged on the upper cover plate 92. The scraper 3 is arranged in front of the agitator 4 along the forward direction. The scraper 3 can be composed of a bracket and a strip-shaped wiper. The scraper can also be a separate scraper strip. The strip-shaped wiper is generally made of soft rubber material and has the function of closing the opening in front of the roller brush 4 and / or scraping off stains and water stains. Of course, according to requirements, the scraper strip 3 can also be in other forms, such as a brush, etc. In order to drive the upper cover plate 92 to pivot and rotate, the surface cleaning device 100 also includes a driving structure 8. The driving structure 8 is used to drive the upper cover plate 92 to rotate around the rotating shaft structure 6 so that the scraper 3 moves between the first position and the second position. The scraper 3 is configured such that: when in the first position, the scraper 3 is away from the surface to be cleaned 7 (reference Figure 4 ); In the second position, the scraping member 3 contacts the surface to be cleaned 7 (reference Figure 3). The driving structure 8 includes a driving motor 81 and a transmission structure. The transmission structure can drive the upper cover plate 92 to pivot relative to the main body 91 under the action of the driving motor 81. Fig.11 , 12 , 18, 19, a second through hole 12 is provided on the housing 1, the driving structure 8 is arranged in the installation space defined by the housing 1, and the transmission structure is in direct / indirect contact with the upper cover plate 92 through the second through hole 12 to drive the upper cover plate 92. A mounting plate 55 is provided at the second through hole 12, and a sealing structure 56 is provided between the mounting plate 55 and the housing 1 to prevent the fluid from entering the installation space from the outside of the housing 1 through the second through hole 12.

[0026] In the embodiment shown in FIG. 14, it can also refer to FIG. 15-17, the driving structure 8 includes a driving motor 81 and a push rod 82 connected to the driving motor 81, and the push rod 82 is used to push the upper cover plate 92 to rotate around the pivot shaft 54. The output shaft of the driving motor 81 is provided with a gear member 83, and the push rod 82 is provided with a gear condition 84 meshing with the gear member 83, so that when the gear member 83 rotates, the gear condition 84 can be driven to move up and down, thereby driving the connecting member 2. Of course, the driving structure 8 can also be a structure of other forms to achieve the driving of the upper cover plate 92 to rotate around the rotating shaft structure 6. The driving motor 81 can perform related actions according to the control signal, and the control signal can be issued by a controller installed on the surface cleaning device 100. The technology for detecting the surface cleaning device 100 to move forward or backward is a conventional technology, for example: installing a sensor on the roller of the cleaning head 102, or installing a sensor at other positions to detect the direction of movement relative to the ground, or detecting the direction of movement by the position of the movable handle, etc., which will not be described in detail here.

[0027] refer to Figure 5-19 The drive structure 8 drives the connecting member 2 to rotate around the rotating shaft structure 6. The rotating shaft structure 6 is generally multiple, and the multiple pivot shafts 54 are spaced farther apart from each other, so that the connecting member 2 can maintain balance during the pivoting process and will not deviate left or right. In one embodiment, when the surface cleaning device 100 moves forward, the drive structure 8 drives the scraper to remain in the first position (reference Fig.17 ), when the surface cleaning device 100 travels backward, the drive structure 8 drives the scraper bar to remain in the second position (reference Fig.15). In another opposite embodiment (not shown in the figure), when the surface cleaning device 100 moves forward, the drive structure 8 drives the scraper bar to remain in the second position, and when the surface cleaning device 100 moves backward, the drive structure 8 drives the scraper bar to remain in the first position. The use of a pivotable upper cover plate 92 can not only simplify the structure and achieve the stability of the scraper bar, but also effectively reduce costs. At least part of the upper surface of the upper cover plate 92 is the outer surface of the cleaning head. In order to facilitate the installation of the drive structure 8, the shell 1 is defined with a accommodating space for accommodating the drive structure 8. The drive structure 8 is placed in the shell 1. By utilizing the sealing performance of the shell 1, on the one hand, its safety performance can be effectively improved, and on the other hand, the cost can be reduced.

[0028] refer to Fig.10 and 11 , and other views can be referred to at the same time. The driving structure 8 drives the upper cover plate 92 to rotate around the pivot shaft 6 so that the scraper bar moves between the first position and the second position. There are generally two pivot shafts 6, and the two pivot shafts 6 are spaced farther from each other, so that the upper cover plate 92 can maintain balance during the pivoting process without shifting left or right. The rotation of the upper cover plate 92 can move the scraper bar between the first position and the second position. When the scraper bar is configured to be in the first position, at this time, the surface cleaning device 100 is moving forward, and the scraper bar is away from the surface to be cleaned 7. When the scraper bar is away from the surface to be cleaned 7, the front suction port can be opened to prevent the dirt on the ground from being pushed forward by the scraper bar. When the scraper bar is in the second position, at this time, the surface cleaning device 100 is moving backward, and the scraper bar is in contact with the surface to be cleaned 7. The front suction port is closed, which can increase the suction force and at the same time, the water stains on the ground can be scraped clean.

[0029] refer to Figure 6 , 7 , 13, in the embodiment shown in the figure, the cover body 9 is detachably mounted on the housing 1, and a locking structure 57 is provided on the cover body 9, and the locking and unlocking between the cover body 9 and the housing 1 can be achieved through the locking structure 57. The locking structure 57 is at least partially arranged in the space defined by the upper cover plate 92 and the main body 91. The locking structure 57 can be installed on the main body 91 through the mounting structure. The mounting structure can be a plastic part, which can be detachably mounted on the main body 91. The locking structure 57 includes a locking block 58 and a reset member 59 (generally a spring or elastic member), and a first through hole 11 is initially provided on the cover body 9, and part of the locking block 58 can pass through the through hole to be operated. In other embodiments, the cover body 9 can also be mounted to the housing 1, and the user can remove the cover body 9 without the aid of tools.

[0030] refer to Figure 5The upper cover plate 92 includes a top wall 93 and a side wall 94. The upper cover plate 92 is covered on the main body 91 and covers the upper surface of the main body 91. At least part of the outer surface of the upper cover plate 92 forms a part of the outer surface of the entire cleaning head 102. The integrated design of the upper cover plate 92 can improve the integrity of the product and improve the waterproof performance.

[0031] The cover body 9 includes at least one shaft structure 6, and the shaft structure 6 is arranged between the scraper 3 and the driving structure 8 in the forward direction. In one embodiment, if the space below the upper cover plate 92 is sufficient, the push rod 82 is arranged below the upper cover plate 92 to generate a downward thrust on the upper cover plate 92, and the shaft structure 6 is arranged in front of the push rod 82 in the forward direction (refer to Fig.18 and 19 In order to make the upper cover plate 92 more stable, the shaft structure 6 is located between the push rod 82 and the scraper strip (refer to Fig.15 and 16 In another embodiment, the cover body 9 includes at least one rotating shaft structure 6, and the push rod 82 is arranged between the scraping member 3 and the rotating shaft structure 6 along the forward direction. The positional relationship between the push rod 82, the scraping strip and the rotating shaft structure 6 can be adjusted according to the lever principle according to the specific structure, which will not be described in detail here.

[0032] The push rod 82 can be connected to the upper cover plate 92 by transmission, so that the scraper strip can be controlled to move between the first position and the second position. For example, the push rod 82 can be connected to the upper cover plate 92 by a detachable clamping structure, and the two can also be fixed by a magnetic structure or other structures. When the cover body 9 is installed on the housing 1, the push rod 82 is combined with the upper cover plate 92. When the cover body 9 leaves the housing 1, the push rod 82 is separated from the upper cover plate 92.

[0033] In other embodiments, if the push rod 82 can push the upper cover plate 92 in only one direction, a reset device (not shown in the figure) is also required. The reset device is configured to keep the upper cover plate 92 in the first position or the second position when the push rod 82 does not apply force to the upper cover plate 92. In the embodiment shown in the figure, the reset device is configured to keep the upper cover plate 92 in the first position when the push rod 82 does not apply force to the upper cover plate 92. The reset device can be an elastic member with rebound performance, or other structures that can realize the reset function, etc., which will not be described in detail here.

[0034] refer to Figure 6 and 7 One of the main body 91 or the upper cover plate 92 is provided with a guide member 61 (which can be a protruding structure), and the other is provided with a guide member 62 (which can be a groove-shaped structure) that matches the guide member 61; the guide member 61 and the guide member 62 cooperate with each other to limit the movement stroke of the upper cover plate 92 relative to the main body 91.

[0035] The scraper (scraper strip) will gradually accumulate dirt or produce wear during use. In order to facilitate cleaning or replacement, the scraper strip is detachably provided on the upper cover plate 92.

[0036] Fig.25 It is a schematic diagram of the structure of the cleaning head in the third embodiment. At the same time, reference can also be made to 15-25. As shown in the figure, in this embodiment, except for some differences between the connecting member 2 and the upper cover plate 92, the other structures can be consistent with the structures in the above embodiments, which will not be described in detail here. The connecting member 2 is at least partially arranged above the suction chamber 5, and the connecting member 2 can be pivotally mounted on the housing 1. The connecting member 2 can be arranged inside the surface cleaning device 100. The connecting member 2 can also be arranged outside the surface cleaning device 100, that is, the outer surface of the connecting member 2 is part of the outer surface of the surface cleaning device 100. The surface cleaning device here can also be an autonomous or driving cleaning device such as a sweeping robot, a commercial scrubber, and a commercial sweeper.

[0037] The scraper 3 (scraper strip) is installed on the connector 2, and along the forward direction, the scraper 3 is located in front of the roller brush. In order to facilitate replacement, the scraper 3 can be detachably installed on the connector 2. The scraper 3 is generally made of soft rubber material, and has the function of closing the opening and scraping off stains. Of course, according to needs, it can also be in other forms, such as a brush. Along the axial direction of the roller brush (X direction in the figure), the width of the connector 2 is greater than one-third of the length of the roller brush. Using a relatively wide connector 2 can further increase the stability of the lifting and lowering of the scraper 3 (keep the left and right consistent).

[0038] In one embodiment, if the space above the connecting member 2 is sufficient, the push rod 82 is disposed above the connecting member 2 to generate a downward thrust on the connecting member 2. The pivot shaft 54 ​​can be disposed behind the roller brush along the travel direction, and the pivot shaft 54 ​​is disposed between the roller brush and the push rod 82. In another embodiment, if the space below the connecting member 2 is sufficient, the push rod 82 is disposed below the connecting member 2 to generate a downward thrust on the connecting member 2. The pivot shaft 54 ​​is disposed in front of the push rod 82 along the travel direction. The positional relationship between the push rod 82, the scraping member 3 and the pivot shaft 54 ​​can be adjusted according to the lever principle according to the specific structure, and will not be described in detail here.

[0039] The push rod 82 can be connected to the connecting member 2 by transmission, so that no matter whether the push rod 82 moves upward or downward, the connecting member 2 can be driven to move around the pivot shaft 54. The driving structure 8 can control the scraper 3 to move between the first position and the second position. For example, the push rod 82 can be detachably connected to the connecting member 2 through a mechanical structure, and the specific structure is not described in detail here. In other embodiments, if the push rod 82 can only push the connecting member 2 in one direction, then a reset device (not shown in the figure) is also required. The reset device is configured to keep the connecting member 2 in the first position or the second position when the push rod 82 does not apply force to the connecting member 2. The reset device can be an elastic reset structure (spring, torsion spring, etc.), or other forms of reset devices.

[0040] The present invention also discloses a cleaning system, which may include a surface cleaning device in any of the above embodiments and a base station docked with the surface cleaning device, the base station being used to accommodate and / or clean the surface cleaning device. A cleaning tank is provided in the base station for cleaning the agitator. At the same time, the base station can also clean the scraping member (scraping strip).

[0041] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and implementation modes. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A surface cleaning device, characterized in that: include: A main unit and a cleaning head movably connected to the main unit; The cleaning head comprises a shell and a cover body arranged on the shell, wherein the shell and the cover body jointly define a suction chamber, wherein an agitator for cleaning the surface to be cleaned is arranged in the suction chamber; the cover body comprises a main body and an upper cover plate pivotally mounted on the main body, wherein a scraper is arranged on the upper cover plate, and the scraper is arranged in front of the agitator along the forward direction; a dirt recovery system, comprising a recovery box in fluid communication with the suction chamber, the recovery box being used to collect dirt; a cleaning liquid supply system, comprising a cleaning liquid tank and a supply pipeline in fluid communication with the cleaning liquid tank, the supply pipeline being used to supply cleaning liquid to the agitator and / or the surface to be cleaned; The driving structure is used to drive the upper cover plate to rotate around the rotating shaft structure so that the scraping member moves between a first position and a second position; the scraping member is configured such that: when in the first position, the scraping member is away from the surface to be cleaned; when in the second position, the scraping member is in contact with the surface to be cleaned.

2. The surface cleaning device according to claim 1, characterized in that The cover body is detachably mounted on the shell, and a locking structure is arranged on the cover body, through which locking and unlocking between the cover body and the shell can be achieved; the locking structure is at least partially arranged in the space jointly defined by the upper cover plate and the main body.

3. A surface cleaning device according to claim 1 or 2, characterized in that The cleaning liquid supply system comprises a liquid distributor in fluid communication with the cleaning liquid tank, and the liquid distributor is arranged behind the agitator along the forward direction of the surface cleaning device.

4. A surface cleaning device according to claim 1 or 2, characterized in that The cover body comprises at least one rotating shaft structure, and the rotating shaft structure is arranged at a position between the scraping member and the driving structure along the forward direction.

5. The surface cleaning device according to claim 1 or 2, characterized in that The driving structure includes a driving motor and a transmission structure, and the transmission structure can drive the upper cover plate to pivot relative to the main body under the action of the driving motor; a second through hole is opened on the shell, and the driving structure is arranged in the installation space defined by the shell, and the transmission structure directly / indirectly contacts the upper cover plate through the second through hole to drive the upper cover plate.

6. The surface cleaning device according to claim 5, characterized in that A mounting plate is disposed at the second through hole, and a sealing structure is disposed between the mounting plate and the shell to prevent fluid from entering the mounting space from outside the shell through the second through hole.

7. The surface cleaning device according to claim 3, characterized in that The liquid distributor is provided with a comb-tooth structure, which is located below the water outlet and in contact with the agitator for scraping off at least part of the dirt.

8. The surface cleaning device according to claim 7, characterized in that One end of the comb-tooth structure close to the water outlet is pivotally mounted on the liquid dispenser, and a biasing structure is provided between the comb-tooth structure and the liquid dispenser, wherein the biasing structure is configured to apply a force to the comb-tooth structure toward the agitator.

9. The surface cleaning device according to claim 1 or 2, characterized in that The cover body includes a reset device, which is configured to keep the cover body in the first position or the second position when the drive structure does not apply a force to the cover body.

10. The surface cleaning device according to claim 1 or 2, characterized in that One of the main body or the upper cover is provided with a guide piece, and the other is provided with a guide piece matched with the guide piece; the guide piece is matched with the guide piece to limit the movement stroke of the upper cover relative to the main body.

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