Cleaning head and surface cleaning equipment

Abstract

The invention discloses a cleaning head and surface cleaning equipment. The cleaning head comprises a shell, the shell is used for moving on a surface to be cleaned, a fluid channel is limited by the shell, and the cleaning head is characterized in that a suction cavity communicated with fluid of the fluid channel and a cleaning cavity arranged in front of the suction cavity are further limited by the shell. The suction cavity and the cleaning cavity are in fluid communication through at least one communication opening. The cleaning head further comprises a sweeping device used for sweeping the surface to be cleaned, the sweeping device comprises a driving motor, a transmission structure and a sweeping piece, the sweeping piece is arranged in the sweeping cavity, the driving motor is used for driving the sweeping piece to move along a movement track through the transmission structure, the movement track comprises a first section and a second section, and the second section is located in the first section. And in the first section, the sweeping piece leaves the surface to be cleaned, and in the second section, the sweeping piece is in contact with the surface to be cleaned so as to sweep dirt on the surface to be cleaned to the communicating port.

Description

Technical Field

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

[0002] A surface cleaning device generally includes a rotary brush. A wiping member such as a wool strip or a leather strip is disposed on the outer surface of the rotary brush. The rotary brush can rotate at a high speed around its own axis, and the wiping member is used to clean the surface to be cleaned.

[0003] The high-speed rotating rotary brush can effectively improve the cleaning ability. However, when the surface to be cleaned includes relatively long hairs, the hairs will quickly wind around the high-speed rotating rotary brush. After the hairs wind around the rotary brush, it will not only affect the cleaning performance, but also require the user to actively clean it. Summary of the Invention

[0004] In view of the deficiencies in the above technologies, the present invention provides a cleaning head and a surface cleaning device, which can effectively clean the hairs on the surface to be cleaned and prevent the hairs from winding around the cleaning member.

[0005] On the one hand, the present invention provides a cleaning head, which includes a housing for moving on the surface to be cleaned. The housing defines a fluid passage, and the housing further defines a suction chamber fluidly connected to the fluid passage and a cleaning chamber disposed in front of the suction chamber; The suction chamber and the cleaning chamber are fluidly connected through at least one communication port; A cleaning device for cleaning the surface to be cleaned, the cleaning device includes a driving motor, a transmission structure and a cleaning member. The cleaning member is disposed in the cleaning chamber. The driving motor is used to drive the cleaning member to move along a movement track through the transmission structure. The movement track includes a first section and a second section. In the first section, the cleaning member leaves the surface to be cleaned. In the second section, the cleaning member contacts the surface to be cleaned to sweep the dirt on the surface to be cleaned towards the communication port.

[0006] Optionally, part of the transmission structure straddles the upper part of the suction chamber.

[0007] Optionally, in the vertical direction, the height of the suction chamber is less than the height of the cleaning chamber.

[0008] Optionally, the cleaning member includes a bracket and a wiping strip mounted on the bracket. The length of the wiping strip is greater than the length of the cleaning chamber so that the wiping strip protrudes from the side wall of the housing.

[0009] Optionally, the transmission structure includes a first transmission group, the first transmission group includes a first eccentric wheel, a first connecting rod drivingly connected to the first eccentric wheel, and a first guiding structure, and the first eccentric wheel rotates to drive the first connecting rod to move relative to the first guiding structure.

[0010] Optionally, the eccentric wheel is provided with a weight structure.

[0011] Optionally, the first guiding structure includes a support rod, the first connecting rod is provided with a travel groove corresponding to the support rod, and the support rod and the travel groove cooperate with each other to define the movement trajectory of the first connecting rod.

[0012] Optionally, the transmission structure further includes a second transmission group, the second transmission group includes a second eccentric wheel, a second connecting rod drivingly connected to the second eccentric wheel, and a second guiding structure, and the second eccentric wheel rotates to drive the second connecting rod to move relative to the second guiding structure.

[0013] Optionally, along the length direction of the cleaning member, the first transmission group and the second transmission group are respectively arranged on both sides of the fluid channel.

[0014] The present application also discloses a cleaning head, which includes a housing for moving on a surface to be cleaned, the housing defining a fluid channel, the housing further defines a first cavity, and the first cavity is in fluid communication with the fluid channel; a cleaning device for cleaning the surface to be cleaned, the cleaning device includes a driving motor, a transmission structure and a cleaning member, and the driving motor is used to drive the cleaning member to move along a movement trajectory through the transmission structure; wherein, the cleaning member and part of the transmission structure are arranged inside the first cavity, and the driving motor and the remaining part of the transmission structure are arranged outside the first cavity.

[0015] Optionally, the transmission structure includes a first transmission group, the first transmission group includes a first eccentric wheel, a first connecting rod drivingly connected to the first eccentric wheel, and a first guiding structure, and the first eccentric wheel rotates to drive the first connecting rod to move relative to the first guiding structure; the first end of the first connecting rod is drivingly connected to the first eccentric wheel, and the cleaning member is arranged at the second end of the first connecting rod; wherein, part of the first connecting rod is located inside the first cavity, and the other part of the first connecting rod is located outside the first cavity.

[0016] Optionally, the first guiding structure includes a support rod, the first connecting rod is provided with a stroke groove corresponding to the support rod, and the support rod and the stroke groove cooperate with each other to define the movement track of the first connecting rod; the support rod is arranged outside the first cavity.

[0017] Optionally, the first cavity includes a suction cavity communicated with the fluid channel and a cleaning cavity communicated with the suction cavity, and the cleaning cavity and the fluid channel are located on both sides of the suction cavity.

[0018] Optionally, the cleaning member includes a bracket and a wiping strip mounted on the bracket, and the length of the wiping strip is greater than the length of the cleaning cavity so that the wiping strip protrudes from the side wall of the housing.

[0019] The present application also discloses a surface cleaning device, which includes a suction motor for generating a suction air flow and a suction pipeline for guiding the suction air flow, and is characterized in that the suction pipeline is in fluid communication with the fluid channel of the above-mentioned cleaning head.

[0020] The present invention provides a cleaning head and a surface cleaning device. The cleaning head includes a housing for moving on a surface to be cleaned, and the housing defines a fluid channel. It is characterized in that the housing further defines a suction cavity in fluid communication with the fluid channel and a cleaning cavity provided in front of the suction cavity. The suction cavity and the cleaning cavity are in fluid communication through at least one communication port. The cleaning head further includes a cleaning device for cleaning the surface to be cleaned, and the cleaning device includes a driving motor, a transmission structure and a cleaning member. The cleaning member is arranged in the cleaning cavity, and the driving motor is used to drive the cleaning member to move along a movement track through the transmission structure. The movement track includes a first section and a second section. In the first section, the cleaning member leaves the surface to be cleaned. In the second section, the cleaning member contacts the surface to be cleaned to sweep the dirt on the surface to be cleaned towards the communication port. The cleaning member only contacts the surface to be cleaned in the second section of the movement track and sweeps the dirt towards the communication port. It does not contact the surface to be cleaned in the first section, which can effectively prevent hair and the like from being wound around the cleaning member.

[0021] The present application also discloses a cleaning head, which includes a housing for moving on a surface to be cleaned, and the housing defines a fluid channel. The housing further defines a first cavity in fluid communication with the fluid channel. The cleaning head further includes a cleaning device for cleaning the surface to be cleaned, and the cleaning device includes a driving motor, a transmission structure and a cleaning member. The driving motor is used to drive the cleaning member to move along a movement track through the transmission structure. Among them, the cleaning member and part of the transmission structure are arranged inside the first cavity, and the driving motor and the rest of the transmission structure are arranged outside the first cavity. Arranging part of the transmission structure outside the first cavity can effectively reduce the space of the first cavity and improve the suction force. Description of the Drawings

[0022] Figure 1 Schematic diagram of the structure of a floor sweeping robot in an embodiment of the present application; Figure 2 Schematic diagram of the structure of an upright vacuum cleaner in an embodiment of the present application; Figure 3 Schematic diagram of the structure of a handheld vacuum cleaner in an embodiment of the present application; Figure 4 Schematic diagram of the structure of a cleaning head that can be installed on a handheld vacuum cleaner in an embodiment of the present application; Figure 5 is Figure 4 Schematic diagram of the structure after hiding the upper housing of the shown cleaning head (including the connection cover plate); Figure 6 is Figure 4 Schematic diagram of the structure of the shown cleaning head at another angle; Figure 7 is Figure 4 Schematic diagram of the structure after hiding the upper housing of the shown cleaning head (excluding the connection cover plate); Figure 8 is Figure 4 Schematic diagram of the structure after hiding the upper housing of the shown cleaning head (excluding the connection cover plate); Figure 9 is Figure 4 Schematic diagram of the structure after hiding the upper housing and the lower housing of the shown cleaning head; Figure 10 is the sectional view along the Figure 4 A - A direction in Figure 11 Schematic diagram showing the movement trajectory of the cleaning member during the forward movement of the cleaning head. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0024] It should be noted that if there are directional indications involved in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0025] In addition, if the embodiments of the present invention involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or is unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0026] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood through specific circumstances.

[0027] Reference Figures 1-3 , a surface cleaning device 100 is disclosed in the figure, which includes a suction motor for generating a suction airflow and a suction pipeline for guiding the suction airflow. The suction pipeline is in fluid communication with the fluid passage 13 of the cleaning head 102 (reference Figure 10 ). The surface cleaning device 100 can be an autonomous cleaning device such as a floor cleaning robot (reference Figure 1 ). The surface cleaning device 100 can also be an upright vacuum cleaner (reference Figure 2 ) or a handheld vacuum cleaner (reference Figure 3 ). The surface cleaning device can be powered by a battery pack carried by itself or can be connected to a municipal power supply through a power cord for power supply. The working principle and related structures of the surface cleaning device 100 (except for the cleaning head 102 disclosed in the present application) are relatively familiar technologies to those skilled in the art and will not be elaborated here. The following focuses on the cleaning head 102 disclosed in the present application.

[0028] Reference Figures 4-11 , a cleaning head 102 is disclosed in the figure. The cleaning head 102 includes a housing 1, and the housing 1 is used to move on the surface to be cleaned. A plurality of rollers can be installed on the housing 1. The housing 1 can be assembled from a plurality of injection-molded parts. Reference Figure 6 and 10, the housing 1 defines a fluid passage 13 for guiding the flow of the suction air current, and the housing 1 also defines a first cavity which is in fluid communication with the fluid passage 13. The first cavity can be a separate cavity. The first cavity can also include a suction cavity 14 and a cleaning cavity 15 which are in fluid communication. The cleaning cavity 15 and the fluid passage 13 are located on both sides of the suction cavity 14. Along the advancing direction of the cleaning device, the cleaning cavity 15 can be located in front of the suction cavity 14 or behind the suction cavity 14, as long as it is ensured that the suction cavity 14 is located between the cleaning cavity 15 and the fluid passage 13. The suction cavity 14 is responsible for fluid communication between the fluid passage 13 and the cleaning cavity 15.

[0029] Reference Figure 6 and 10 , the housing 1 defines a suction cavity 14 which is in fluid communication with the fluid passage 13 and a cleaning cavity 15 provided in front of the suction cavity 14. The suction cavity 14 and the cleaning cavity 15 are in fluid communication through at least one communication port 16. The communication port 16 can be T-shaped, and along the flowing direction of the air current, the cross-section of the communication port 16 gradually decreases. Such a setting can effectively improve the cleaning ability. When the surface cleaning device 100 is a floor sweeping robot, the cleaning head 102 can be integrated into the body 101 of the floor sweeping robot or can be detachably mounted to the floor sweeping robot. When the cleaning head 102 is integrated with the body 101 of the floor sweeping robot, the housing 1 of the cleaning head 102 is a part of the body 101 of the floor sweeping robot. When the surface cleaning device 100 is an upright vacuum cleaner, the cleaning head 102 is generally pivotally connected to the body 101 of the cleaning device, and the user controls the surface cleaning device 100 by operating the body 101. When the surface cleaning device 100 is a handheld vacuum cleaner, the cleaning head 102 can be connected to the cleaning head 102 through a connecting rod. When the surface cleaning device 100 is working, the cleaning device 2 works in the cleaning cavity 15 to sweep at least part of the dirt to the communication port 16. The suction air current generated by the cleaning device sucks the dirt at the communication port 16 into the suction cavity 14, and then the dirt in the suction cavity 14 is recovered into the recovery box through the fluid passage 13. As Figure 10 shown in the embodiment, along the vertical direction, the height of the suction cavity 14 is less than the height of the cleaning cavity 15. Defining the suction cavity 14 to be smaller can effectively reduce the suction loss and improve the cleaning ability.

[0030] Reference Figures 4-11 , in order to effectively avoid the traditional roller brush from winding hair, the present application discloses a new cleaning device 2. The cleaning device 2 is used for cleaning the surface to be cleaned. The cleaning device 2 (such as Figure 8) includes a driving motor 21, a transmission structure 22 and a cleaning member 25 (non-drum structure), the cleaning member 25 is arranged in the cleaning chamber 15, the driving motor 21 is used to drive the cleaning member 25 to move along a motion trajectory through the transmission structure 22, the motion trajectory is a closed trajectory, the motion trajectory includes a first section and a second section, in the first section (refer to Figure 11 In the first, third and fourth figures, the cleaning member 25 leaves the surface to be cleaned and in the second section (reference Figure 11 ), the cleaning member 25 contacts the surface to be cleaned to sweep the dirt on the surface to be cleaned toward the connecting port 16. The motion trajectory can be a circular trajectory, an elliptical trajectory, a rectangular trajectory, or an irregular pattern trajectory, and different motion trajectories can be realized by different transmission structures 22. The transmission structures 22 for realizing elliptical and rectangular trajectories are relatively common and will not be described in detail here. This application describes in detail a transmission structure 22 that can realize an irregular pattern motion trajectory.

[0031] refer to Figures 4-10 The housing 1 includes an upper housing 17 and a lower housing 18, and an installation space 28 is defined between the upper housing 17 and the lower housing 18. The drive motor 21 can be a common motor, and after the motor is powered on, it can be controlled by a controller. The controller can be a common circuit board. The controller can control the start, shutdown, speed and rotation direction of the drive motor 21. It will not be described in detail here. Figures 7-9 As shown, the transmission structure 22 includes a first transmission group 23, and the first transmission group 23 includes a first eccentric wheel 231, a first connecting rod 232 connected to the first eccentric wheel 231, and a first guide structure 233. The first eccentric wheel 231 rotates to drive the first connecting rod 232 to move relative to the first guide structure 233. The drive motor 21 can directly drive the first eccentric wheel 231 to rotate. Of course, in order to increase or reduce the rotation speed, the drive motor 21 can also be connected to the first eccentric wheel 231 through gears or belts. The embodiment shown in the figure is to reduce the rotation speed through the gear structure to drive the first eccentric wheel 231 to rotate. Of course, in other embodiments, if the rotation speed of the drive motor 21 is not enough, the gear structure can also be used to increase the rotation speed. A connecting shaft 26 is provided on the side of the first eccentric wheel 231. The connecting shaft 26 (refer to Figure 11deviates from the axis of the first eccentric wheel 231. The first end of the first connecting rod 232 is rotatably connected to the connecting shaft 26. When the first eccentric wheel 231 rotates, it drives the first end of the first connecting rod 232 to perform a circular motion around the axis of the first eccentric wheel 231. The cleaning member 25 is arranged at the second end of the first connecting rod 232. When the first connecting rod 232 performs a circular motion around the axis of the first eccentric wheel 231, under the guidance of the first guiding structure 233, it drives the cleaning member 25 to perform a motion in an irregular shape (not a conventional shape such as a circle, an ellipse, a rectangle, etc.). In this irregular motion trajectory, it is mainly divided into a first section and a second section. When the cleaning member 25 is located in the first section, the cleaning member 25 leaves the surface to be cleaned. When the cleaning member 25 is located in the second section, the cleaning member 25 contacts the surface to be cleaned to sweep the dirt on the surface to be cleaned towards the communication port 16. Usually, the distance of the second section is shorter than that of the first section. And in the second section, the cleaning member 25 moves towards the position of the communication port 16 (refer to Figure 11 the second figure in). Such a motion trajectory, throughout the entire trajectory, the cleaning member itself does not rotate relative to the transmission structure 22, but only moves along the motion trajectory under the motion of the transmission structure 22, and can sweep the dirt on the surface to be cleaned from front to back (or from back to front) to the communication port 16, and then be sucked into the suction cavity 14. Because the cleaning member 25 only performs a sweeping action in the second section and does not rotate itself, therefore, very little hair is wound around the cleaning member 25, and the problem of hair winding around the cleaning member 25 can be effectively avoided.

[0032] A counterweight can be added to the area of the eccentric wheel opposite to the connecting shaft 26 to reduce the noise generated when the eccentric wheel rotates at high speed. During manufacturing, the eccentric wheel can be directly formed as: the end where the connecting shaft 26 is located is relatively light, and the other end along the diameter direction is relatively heavy. The eccentric wheel can be a conventional disc-shaped structure. The eccentric wheel can also be a structure of other shapes made according to actual needs, such as a water droplet shape or a fan shape, etc. The connecting shaft is designed at the end with relatively less weight to reduce noise.

[0033] Refer to Figures 8-11 , the guiding structure includes a support rod 26. The connecting rod is provided with a stroke groove 253 corresponding to the support rod 26. The support rod 26 and the stroke groove 253 cooperate with each other to define the motion trajectory of the connecting rod. Specifically, the support rod 26 does not displace relative to the housing 1. When the first end of the connecting rod moves under the action of the eccentric wheel, at this time, the whole connecting rod moves relative to the support rod 26 under the guidance of the stroke groove 253 to drive the cleaning member 25 to perform a non-circular motion (as Figure 11 shown), Figure 11The arrow direction near the eccentric wheel indicates the rotation direction of the eccentric wheel; the arrow near the cleaning member 25 indicates the movement direction of the cleaning member 25. The support rod 26 can be fixedly installed on the housing 1. The support rod 26 can also be installed on the housing 1 through devices such as bearings so that it can rotate around its own axis. When the connecting rod moves relative to the support rod 26, if the support rod 26 is fixed, friction and / or collision will occur between the connecting rod and the support rod 26. If the support rod 26 can rotate around itself, then when the connecting rod moves relative to the support rod 26, the support rod 26 itself will also rotate, which can effectively reduce friction and lower noise.

[0034] In other embodiments, the support rod 26 can be cancelled, and the guiding structure can adopt an elastic structure to support the connecting rod on the housing 1. For example, multiple springs can be used to install the connecting rod on the housing 1, or the connecting rod can also be supported on the housing 1 through a hollow annular rubber member (with certain elasticity). In this way, both the movement trajectory of the connecting rod can be ensured and the noise can be reduced.

[0035] Reference Figures 4-10 , part of the transmission structure 22 straddles above the suction chamber 14. The lower housing 18 is provided with a through hole for the connecting rod to pass through. A part of the connecting rod is located in the installation space 28, and another part of the connecting rod passes through the through hole and extends into the cleaning chamber 15. When the first cavity is a separate cavity. A part of the connecting rod is located in the first cavity, and another part is located in the installation space 28. In order to improve the suction performance. The through hole of the lower housing 18 can be sealed. The above elastic structure can also be arranged at the through hole. On the one hand, the connecting rod is supported by the elastic structure arranged on the lower housing 18, and at the same time, the through hole can be sealed by the elastic structure to reduce or isolate the airflow from entering the first cavity from the installation space 28. Sealing the through hole can also prevent dust from entering the installation space.

[0036] Reference Figures 7-10 , the cleaning member 25 can be an integral wiping strip 252. The cleaning member 25 can also include a bracket 251 and a wiping strip 252 installed on the bracket 251. In order to improve the edge cleaning effect, the length of the wiping strip 252 is greater than the length of the cleaning chamber 15, so that the wiping strip 252 protrudes from the side wall 12 of the housing 1. In order to achieve one-sided edge cleaning, one end of the wiping strip 252 protrudes from the corresponding side wall 12 of the housing 1. The length of the bracket 251 is less than the length of the cleaning chamber 15. In this way, when performing edge cleaning, the bracket 251 can be prevented from contacting the surface to be cleaned on the side, and only the wiping strip 252 needs to contact the surface to be cleaned. The wiping strip 252 can be detachably installed on the bracket 251 for easy replacement. Of course, both ends of the wiping strip 252 can protrude from the side wall 12, so that both ends of the wiping strip 252 can perform edge cleaning.

[0037] Continue to refer to Figure 7 and8 , in order to enable the cleaning member 25 to move smoothly, the transmission structure 22 further includes a second transmission group 24. The second transmission group 24 includes a second eccentric wheel 241, a second connecting rod 242 drivingly connected to the second eccentric wheel 241, and a second guiding structure 243. The second eccentric wheel 241 rotates to drive the second connecting rod 242 to move relative to the second guiding structure 243. The second transmission group 24 is basically the same as the first transmission group 23, except that the placement position is spaced apart from the first transmission group 23. Along the length direction of the cleaning member 25, the first transmission group 23 and the second transmission group 24 are respectively arranged on both sides of the fluid passage 13. Symmetrically arranging along the fluid passage 13 can improve the stability of the transmission structure 22 and reduce noise. In order to ensure the consistency of the movement of the first connecting rod 232 and the second connecting rod 242, a connecting cover plate 27 is provided between the two connecting rods (as Figure 5 shown), and the connecting cover plate 27 can fix the two connecting rods into a whole and move together. Of course, in other embodiments, the two connecting rods can also be integrally formed into a whole.

[0038] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily achieved. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the illustrated examples here.

Claims

1. A cleaning head, comprising a housing, the housing being used to move on a surface to be cleaned, the housing defining a fluid channel, characterized in that: The housing further defines a suction chamber in fluid communication with the fluid passage and a sweep chamber disposed forward of the suction chamber; The suction chamber and the cleaning chamber are in fluid communication via at least one communication port; A cleaning device is used to clean the surface to be cleaned, and the cleaning device includes a driving motor, a transmission structure and a cleaning piece. The cleaning piece is arranged in the cleaning chamber. The driving motor is used to drive the cleaning piece to move along a motion trajectory through the transmission structure. The motion trajectory includes a first section and a second section. In the first section, the cleaning piece leaves the surface to be cleaned, and in the second section, the cleaning piece contacts the surface to be cleaned to sweep the dirt on the surface to be cleaned toward the connecting port.

2. The cleaning head according to claim 1, characterized in that: Part of the transmission structure spans over the top of the suction chamber.

3. The cleaning head according to claim 1, characterized in that: In the vertical direction, the height of the suction chamber is smaller than the height of the cleaning chamber.

4. The cleaning head according to claim 1, characterized in that: The cleaning member comprises a bracket and a wiping strip mounted on the bracket, wherein the length of the wiping strip is greater than the length of the cleaning cavity so that the wiping strip protrudes from the side wall of the shell.

5. The cleaning head according to claim 1, characterized in that: The transmission structure includes a first transmission group, which includes a first eccentric wheel, a first connecting rod transmission-connected to the first eccentric wheel, and a first guide structure. The first eccentric wheel rotates to drive the first connecting rod to move relative to the first guide structure.

6. The cleaning head according to claim 5, characterized in that: The eccentric wheel is provided with a counterweight structure.

7. The cleaning head according to claim 5, characterized in that: The first guiding structure includes a support rod, and the first connecting rod is provided with a travel groove corresponding to the support rod, and the support rod and the travel groove cooperate with each other to define a movement trajectory of the first connecting rod.

8. The cleaning head according to claim 5, characterized in that: The transmission structure also includes a second transmission group, which includes a second eccentric wheel, a second connecting rod transmission-connected to the second eccentric wheel, and a second guide structure, and the second eccentric wheel rotates to drive the second connecting rod to move relative to the second guide structure.

9. The cleaning head according to claim 8, characterized in that: The first transmission group and the second transmission group are respectively arranged on both sides of the fluid channel along the length direction of the cleaning member.

10. A cleaning head comprising a housing, the housing being adapted to move over a surface to be cleaned, the housing defining a fluid passage, wherein: The housing further defines a first cavity in fluid communication with the fluid passage; A cleaning device, used for cleaning the surface to be cleaned, the cleaning device comprising a driving motor, a transmission structure and a cleaning member, the driving motor being used for driving the cleaning member to move along a motion trajectory through the transmission structure; The cleaning member and part of the transmission structure are arranged inside the first cavity, and the driving motor and the rest of the transmission structure are arranged outside the first cavity.

11. The cleaning head according to claim 10, characterized in that The transmission structure includes a first transmission group, which includes a first eccentric wheel, a first connecting rod connected to the first eccentric wheel and a first guide structure, the first eccentric wheel rotates to drive the first connecting rod to move relative to the first guide structure; the first end of the first connecting rod is connected to the first eccentric wheel, and the cleaning member is arranged at the second end of the first connecting rod; wherein, part of the first connecting rod is located inside the first cavity, and another part of the first connecting rod is located outside the first cavity.

12. The cleaning head according to claim 11, characterized in that The first guiding structure includes a support rod, the first connecting rod is provided with a travel groove corresponding to the support rod, the support rod and the travel groove cooperate with each other to limit the movement trajectory of the first connecting rod; the support rod is arranged outside the first cavity.

13. The cleaning head according to claim 11, characterized in that The first cavity includes a suction cavity communicated with the fluid channel and a cleaning cavity communicated with the suction cavity. The cleaning cavity and the fluid channel are located on both sides of the suction cavity.

14. The cleaning head according to claim 11, characterized in that: The cleaning member comprises a bracket and a wiping strip mounted on the bracket, wherein the length of the wiping strip is greater than the length of the cleaning cavity so that the wiping strip protrudes from the side wall of the shell.

15. A surface cleaning device comprising a suction motor for generating a suction airflow and a suction duct for guiding the suction airflow, characterized in that: The suction duct is in fluid communication with the fluid channel of the cleaning head of any one of claims 1-14.

Images