Cleaning head and cleaning device

Abstract

The utility model is suitable for the field of cleaning equipment, disclose a kind of cleaning head and cleaning equipment.The cleaning head includes shell, roll brush, shielding component and knob, shell is formed with suction cavity and auxiliary suction port, auxiliary suction port is located in the front of suction cavity along the moving direction of cleaning head on the surface to be cleaned, and auxiliary suction port is communicated with suction cavity;Roll brush is rotatably arranged in suction cavity;Shielding component is movably connected to shell, to at least be used to open or close auxiliary suction port;Knob is rotatably connected to shell, and is transmission connection with shielding component, to be used to rotate and drive shielding component movement under external force, to make shielding component open or close auxiliary suction port.The utility model opens or closes auxiliary suction port by shielding component, to meet the cleaning demand of cleaning head under different scenes, and its operation mode is simple, convenient.

Description

Technical Field

[0001] This utility model relates to the field of cleaning instruments, and more particularly to a cleaning head and a cleaning device having the cleaning head. Background Technology

[0002] The related technology provides a cleaning device that uses a cleaning head to suck up dust, debris, and other waste from a surface to be cleaned, thereby achieving cleaning. In this related technology, the front side of the cleaning head is fixed, and the distance to the surface to be cleaned is designed to be relatively small to prevent excessive air pressure leakage from affecting cleaning performance.

[0003] However, the cleaning equipment provided by the aforementioned technologies has the following shortcomings in specific applications: because the front part of the cleaning head is designed to be relatively low, larger debris or other garbage on the surface to be cleaned cannot enter the suction chamber of the cleaning head through the gap between the front part of the cleaning head and the surface to be cleaned, thus making it impossible for the cleaning head to remove larger debris or other garbage from the surface to be cleaned, thereby affecting the cleaning effect of the cleaning equipment. Utility Model Content

[0004] The first objective of this invention is to provide a cleaning head that solves the technical problem in the related art that large-sized debris on the surface to be cleaned cannot enter the suction chamber of the cleaning head.

[0005] To achieve the above objectives, the present invention provides a cleaning head, comprising:

[0006] The housing has a suction chamber and an auxiliary suction port. The auxiliary suction port is located in front of the suction chamber along the direction of movement of the cleaning head on the surface to be cleaned, and the auxiliary suction port is in communication with the suction chamber.

[0007] A roller brush, which is rotatably disposed within the suction chamber;

[0008] A shielding component, which is movably connected to the housing, is used at least to open or close the auxiliary suction port;

[0009] A knob is rotatably connected to the housing and is throttle-connected to the shielding component, so as to rotate under the action of external force and drive the shielding component to move, thereby opening or closing the auxiliary suction port.

[0010] In one embodiment, the shielding component is vertically and flexibly connected to the housing;

[0011] The knob is used to drive the blocking component to move up and down, so that the blocking component opens or closes the auxiliary suction port.

[0012] In one embodiment, the cleaning head further includes gears and racks;

[0013] The rack is integrally formed or connected to the shielding component;

[0014] The gear is integrally formed or connected to the knob, and the gear meshes with the rack to drive the rack and the blocking component to move up and down under the drive of the knob.

[0015] In one embodiment, the rack extends vertically;

[0016] And / or, the gear and the rack are arranged side by side in the horizontal direction.

[0017] In one embodiment, the rotation center axis of the knob is coaxially arranged with the rotation center axis of the gear;

[0018] And / or, the gear is detachably connected to the knob by a screw.

[0019] In one embodiment, one of the knob and the gear is provided with a positioning boss and the other is provided with a positioning groove, and the positioning boss and the positioning groove are engaged.

[0020] In one embodiment, the number of the positioning boss and the positioning groove is one, and the outer side wall of the positioning boss includes at least one planar first side wall, and the inner side wall of the positioning groove includes at least one planar second side wall, with the first side wall and the second side wall being fitted together.

[0021] Alternatively, the number of positioning protrusions is at least two, the number of positioning grooves is the same as the number of positioning protrusions, the at least two positioning protrusions are spaced apart, and each positioning protrusion is engaged with one of the positioning grooves.

[0022] In one embodiment, the shielding component includes a first vertical extension, a second vertical extension, and a lateral extension. The first vertical extension is spaced in front of the second vertical extension along the moving direction of the cleaning head on the surface to be cleaned. The lateral extension extends from the bottom end of the first vertical extension to the bottom end of the second vertical extension.

[0023] The rack is integrally formed or connected to the first vertical extension;

[0024] The first vertical extension is used to open or close the auxiliary suction port.

[0025] In one embodiment, both the first vertical extension and the second vertical extension are plate-shaped.

[0026] And / or, the first vertical extension and the second vertical extension satisfy at least one of the following conditions: the height of the first vertical extension is less than the height of the second vertical extension, and the length of the first vertical extension is less than the length of the second vertical extension.

[0027] In one embodiment, the housing is further provided with a mounting hole that communicates with the suction chamber and is located above the auxiliary suction port.

[0028] One of the knob and the gear is at least partially inserted into the mounting hole to connect with the other of the knob and the gear.

[0029] In one embodiment, the mounting hole includes a first hole segment and a second hole segment with a diameter smaller than that of the first hole segment, the second hole segment being disposed between the first hole segment and the suction cavity along the axial direction of the first connecting hole;

[0030] The knob includes a first rod segment and a second rod segment with an outer diameter smaller than that of the first rod segment. The first rod segment passes through the first hole segment, and the second rod segment passes through at least partially through the second hole segment. The second rod segment has a grip portion for a person to hold and rotate the knob.

[0031] In one embodiment, one of the shielding component and the housing is provided with an elastic limiting structure, and the other is provided with a group of limiting holes;

[0032] The limiting hole group includes a first limiting hole and a second limiting hole that are spaced apart along the vertical direction;

[0033] The first limiting hole is used to engage with the elastic limiting structure when the blocking component is in the state where the auxiliary suction port is open;

[0034] The second limiting hole is used to engage with the elastic limiting structure when the blocking component is in the state of closing the auxiliary suction port.

[0035] In one embodiment, the elastic limiting structure is an elastic snap or a ball-head plunger;

[0036] And / or, the number of the elastic limiting structure and the number of the limiting hole group are both two, the two elastic limiting structures are distributed at intervals along the horizontal direction perpendicular to the rotation center axis of the knob, and the limiting hole of each limiting hole group is used to engage with one of the elastic limiting structures.

[0037] The second objective of this invention is to provide a cleaning head, which includes:

[0038] The housing has a suction chamber and an auxiliary suction port. The auxiliary suction port is located in front of the suction chamber along the direction of movement of the cleaning head on the surface to be cleaned, and the auxiliary suction port is in communication with the suction chamber.

[0039] A roller brush, which is rotatably disposed within the suction chamber;

[0040] A shielding component, which is movably connected to the housing, is used at least to open or close the auxiliary suction port;

[0041] A rack, which is integrally formed or connected to the shielding component;

[0042] A gear that meshes with the rack to drive the rack to move up and down, thereby opening or closing the auxiliary suction port of the shielding component.

[0043] In one embodiment, the shielding component includes a first vertical extension, a second vertical extension, and a lateral extension. The first vertical extension is spaced apart in front of the second vertical extension along the moving direction of the cleaning head on the surface to be cleaned. The lateral extension extends from the bottom end of the first vertical extension and connects to the bottom end of the second vertical extension. The rack is integrally formed or connected to the first vertical extension. The first vertical extension is used to open or close the auxiliary suction port.

[0044] And / or, one of the shielding component and the housing is provided with an elastic limiting structure, and the other is provided with a limiting hole group. The limiting hole group includes a first limiting hole and a second limiting hole distributed at intervals along the vertical direction. The first limiting hole is used to engage with the elastic limiting structure when the shielding component is in the state of opening the auxiliary suction port, and the second limiting hole is used to engage with the elastic limiting structure when the shielding component is in the state of closing the auxiliary suction port.

[0045] The third objective of this invention is to provide a cleaning head, which includes:

[0046] A housing having a suction cavity;

[0047] A roller brush, which is rotatably disposed within the suction chamber;

[0048] A shielding component is provided in front of the roller brush along the moving direction of the cleaning head on the surface to be cleaned, and the shielding component is flexibly connected to the housing;

[0049] A knob, rotatably connected to the housing and drivenly connected to the shielding component, is used to rotate under external force and drive the shielding component to move up and down, thereby adjusting the distance from the bottom of the shielding component to the surface to be cleaned.

[0050] In one embodiment, the cleaning head further includes a gear and a rack, the rack being integrally formed or connected to the shielding component, the rack extending vertically, the gear being integrally formed or connected to the knob, and the gear meshing with the rack to drive the rack and the shielding component to move up and down under the drive of the knob;

[0051] And / or, the shielding component includes a first vertical extension, a second vertical extension, and a lateral extension, wherein the first vertical extension is spaced apart in front of the second vertical extension along the moving direction of the cleaning head on the surface to be cleaned, and the lateral extension extends from the bottom end of the first vertical extension and connects to the bottom end of the second vertical extension.

[0052] The fourth objective of this utility model is to provide a cleaning device, which includes:

[0053] The cleaning head mentioned above;

[0054] The main unit is connected to the cleaning head to provide negative pressure to the suction chamber.

[0055] The first objective of this invention is to provide a cleaning head that, by forming an auxiliary suction port in front of the suction chamber within the housing, and by opening and closing the auxiliary suction port via a shielding component movably connected to the housing, allows for adjustments to the shielding component's state to meet cleaning needs in different scenarios. For example, when the shielding component is switched to the open position, the cleaning head allows larger debris from the surface to be cleaned to enter the suction chamber through the open auxiliary suction port and be suctioned away, thus achieving the cleaning function for larger debris or other waste on the surface. When the shielding component is switched to the closed position, air pressure leakage within the suction chamber is reduced, thereby maximizing the suction force of the cleaning head to ensure effective cleaning of heavily soiled surfaces. Furthermore, this invention uses a knob to drive the shielding component to open and close the auxiliary suction port, which is simple and convenient to operate. The knob also occupies little space, minimizing its impact on the spatial layout of the cleaning head and the airtightness of the suction chamber.

[0056] The second objective of this invention is to provide a cleaning head that, by forming an auxiliary suction port in front of the suction chamber within the housing, and by opening and closing the auxiliary suction port via a shielding component movably connected to the housing, allows for adjustments to the shielding component's state to meet cleaning needs in different scenarios. For example, when the shielding component is switched to the open position, the cleaning head allows larger debris from the surface to be cleaned to enter the suction chamber through the open auxiliary suction port and be suctioned away, thus achieving the cleaning function for larger debris or other waste on the surface. When the shielding component is switched to the closed position, it reduces air pressure leakage within the suction chamber, thereby maximizing the suction force of the cleaning head on the surface to be cleaned, ensuring effective cleaning of heavily soiled surfaces. Furthermore, this invention uses a transmission mechanism composed of gears and racks to drive the shielding component to open and close the auxiliary suction port, resulting in a simple and compact structure.

[0057] The third objective of this invention is to provide a cleaning head that, by movably connecting a shielding component located in front of the suction chamber to the housing, allows for adjustments to the shielding component's position to meet cleaning needs in different scenarios. For example, when the shielding component is adjusted to a position where its bottom is further from the surface to be cleaned, the cleaning head allows larger debris to pass through the gap between the shielding component and the surface to enter the suction chamber and be removed, thus achieving the cleaning function for larger debris or other waste. Conversely, when the shielding component is adjusted to a position where its bottom is further from the surface to be cleaned, air pressure leakage in the suction chamber is reduced, thereby maximizing the suction force of the cleaning head and ensuring effective cleaning of heavily soiled surfaces. Furthermore, this invention uses a knob to drive the shielding component to move up and down to adjust the distance between its bottom and the surface to be cleaned. This method is simple and convenient, and the knob's small installation space minimizes its impact on the spatial layout of the cleaning head and the airtightness of the suction chamber.

[0058] The cleaning device provided by the fourth objective of this utility model, due to the adoption of the above-mentioned cleaning head, can well take into account both the cleaning needs of large-sized garbage and the requirements of suction power, so as to meet the cleaning needs of the cleaning device in different application scenarios, and its cleaning head has a simple structure. Attached Figure Description

[0059] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0060] Figure 1 This is a three-dimensional schematic diagram of the cleaning head provided in an embodiment of this utility model;

[0061] Figure 2 yes Figure 1 A three-dimensional sectional view of AA, with the dashed arrows indicating the airflow direction;

[0062] Figure 3 yes Figure 2 A magnified view of a portion of point C in the middle;

[0063] Figure 4 yes Figure 1 Cross-sectional schematic diagram of BB;

[0064] Figure 5 yes Figure 4 A cross-sectional schematic diagram of the EE;

[0065] Figure 6 yes Figure 5 A magnified view of a portion of point E in the middle;

[0066] Figure 7 This is an exploded view of the cleaning head provided in an embodiment of the present invention;

[0067] Figure 8 This is an exploded view of the knob, gear, and screw provided in an embodiment of the present invention;

[0068] Figure 9 This is a three-dimensional schematic diagram of the knob provided in this embodiment of the utility model;

[0069] Figure 10 This is a three-dimensional schematic diagram of the shielding component provided in an embodiment of the present utility model;

[0070] Figure 11 This is a three-dimensional schematic diagram of the support frame provided in an embodiment of this utility model.

[0071] Reference numerals: 10, Cleaning head; 100, Housing; 110, Suction chamber; 120, Lower housing; 121, Auxiliary suction port; 122, Mounting hole; 1221, First hole section; 1222, Second hole section; 1223, Second axial step end face; 130, Support frame; 140, Main suction port; 150, Pipe; 151, Suction channel; 160, First upper housing; 170, Second upper housing; 180, Elastic limiting structure; 181, Elastic buckle; 1811, Vertical rod; 1812, Hook; 200, Shielding component; 210, First vertical extension; 220, Second vertical extension; 230, Lateral extension. ; 240, Limiting hole group; 241, First limiting hole; 242, Second limiting hole; 300, Roller brush; 400, Knob; 410, Second connecting hole; 420, Positioning groove; 421, Second side wall; 422, Fourth side wall; 430, First rod segment; 440, Second rod segment; 450, First axial step end face; 460, Grip part; 500, Gear; 510, First connecting hole; 520, Positioning boss; 521, First side wall; 522, Third side wall; 530, Gear body; 600, Rack; 700, Screw; 800, Roller; X, First horizontal direction; Y, Second horizontal direction; Z, Vertical direction. Detailed Implementation

[0072] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0073] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture. If the specific posture changes, the directional indicator will also change accordingly.

[0074] It should also be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or may be connected to an intermediary component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component through an intermediary component.

[0075] The cleaning head and cleaning device provided in this embodiment are suitable for cleaning surfaces. The surface to be cleaned can be a soft surface or a hard surface. A soft surface can be the surface of a carpet, and a hard surface can be the surface of a tile, glass, cement floor, wood floor, etc.

[0076] Reference Figure 1 and Figure 2 As shown, a first aspect of this utility model provides a cleaning head 10, which includes a housing 100 and a blocking member 200. The housing 100 has a suction cavity 110 and an auxiliary suction port 121. The auxiliary suction port 121 is located in front of the suction cavity 110 along the moving direction of the cleaning head 10 on the surface to be cleaned, and the auxiliary suction port 121 communicates with the suction cavity 110, that is, the auxiliary suction port 121 extends from the front side of the housing 100 and communicates with the suction cavity 110. The blocking member 200 is movably connected to the housing 100 to at least open or close the auxiliary suction port 121. The bottom of the suction cavity 110 is open towards the surface to be cleaned to enclose a cleaning area on the surface to be cleaned. The suction cavity 110 can suction under negative pressure to remove dust, debris, and other garbage in the cleaning area. The shielding component 200 is movably connected to the housing 100, specifically meaning that after the shielding component 200 is connected to the housing 100, it can still move relative to the housing 100 under the action of external force. The shielding component 200 closes the auxiliary suction port 121, specifically meaning that the shielding component 200 covers the auxiliary suction port 121 to prevent debris in front of the cleaning head 10 from entering the suction chamber 110 through the auxiliary suction port 121. The shielding component 200 opens the auxiliary suction port 121, specifically meaning that the shielding component 200 moves away from the auxiliary suction port 121 to allow debris in front of the cleaning head 10 to enter the suction chamber 110 through the auxiliary suction port 121. In this embodiment, by providing the auxiliary suction port 121 on the front side of the housing 100 and opening and closing the auxiliary suction port 121 through the shielding component 200, the state of the shielding component 200 can be adjusted to meet the cleaning needs of different scenarios in specific applications. For example, when the shielding component 200 is switched to the open auxiliary suction port 121 state, the cleaning head 10 allows larger debris on the surface to be cleaned to enter the suction chamber 110 through the open auxiliary suction port 121 and be sucked away by the cleaning head 10, thus achieving the cleaning function for larger debris or other waste on the surface to be cleaned. When the shielding component 200 is switched to the closed auxiliary suction port 121 state, the air pressure leakage in the suction chamber 110 can be reduced, thereby maximizing the suction force of the cleaning head 10 for cleaning the surface to be cleaned, ensuring the cleaning effect of the cleaning head 10 on heavily soiled surfaces.

[0077] Reference Figure 2As shown, in one embodiment, the cleaning head 10 also includes a roller brush 300, which is rotatably disposed within the suction chamber 110. The roller brush 300 is mainly used to sweep up dust, debris, hair, and other garbage adhering to the surface to be cleaned and throw them into the airflow of the suction chamber 110, so that they can be more easily sucked away from the surface to be cleaned by the suction force, thereby ensuring the cleaning effect and cleaning efficiency of the cleaning head 10.

[0078] Reference Figure 1 and Figure 3 As shown, in one embodiment, the cleaning head 10 also includes a knob 400, which is rotatably connected to the housing 100 and drively connected to the blocking component 200. The knob 400 is used to rotate under external force and drive the blocking component 200 to move, thereby opening or closing the auxiliary suction port 121. In specific applications, the user can drive the blocking component 200 to move by rotating the knob 400, so that the blocking component 200 moves to at least the state of opening the auxiliary suction port 121 and the state of closing the auxiliary suction port 121. In this embodiment, driving the blocking component 200 to open and close the auxiliary suction port 121 by rotating the knob 400 is simple and convenient to operate. Furthermore, the knob 400 occupies little space, which helps to reduce the impact on the spatial layout of the cleaning head 10 and the airtightness of the suction chamber 110.

[0079] In one embodiment, the shielding component 200 is vertically and flexibly connected to the housing 100. The knob 400 drives the shielding component 200 to move vertically, thereby opening or closing the auxiliary suction port 121. The vertical movement of the shielding component 200 refers to its upward and downward movements. Specifically, the upward movement of the shielding component 200 refers to its movement away from the surface to be cleaned. Specifically, the downward movement of the shielding component 200 refers to its movement towards the surface to be cleaned. In this embodiment, the shielding component 200 is movably connected to the housing 100 in such a way that it can be raised and lowered relative to the housing 100. That is, after the shielding component 200 is connected to the housing 100, it can still move relative to the housing 100 in the vertical direction Z (e.g., under external force). Figure 1 As shown in the figure, in this embodiment, the vertical direction Z (referring to the direction perpendicular to the surface to be cleaned) moves to increase or decrease the distance between the bottom of the shielding component 200 and the surface to be cleaned, thereby achieving the purpose of opening or closing the auxiliary suction port 121. The knob 400 drives the shielding component 200 to move up and down, so that the shielding component 200 can switch between at least the state of opening the auxiliary suction port 121 and the state of closing the auxiliary suction port 121. That is, the knob 400 only needs to drive the shielding component 200 to make a single linear reciprocating motion in the vertical direction Z to switch the shielding component 200 to different states. The movement mode of the shielding component 200 is simple and easy to implement.

[0080] In one implementation, the knob 400 is connected to the blocking component 200 via a gear and rack transmission mechanism. In this way, the rotational driving force of the knob 400 can be converted into the linear motion of the blocking component 200, and its structure is simple and compact.

[0081] Reference Figure 1 and Figure 3 As shown, in one embodiment, the gear and rack transmission mechanism includes a gear 500 and a rack 600, meaning the cleaning head 10 also includes a gear 500 and a rack 600. The rack 600 is integrally formed or connected to the shielding component 200; the gear 500 is integrally formed or connected to the knob 400, and the gear 500 meshes with the rack 600 to drive the rack 600 and the shielding component 200 to move up and down under the drive of the knob 400. "The rack 600 is integrally formed or connected to the shielding component 200" means that the rack 600 and the shielding component 200 are a single integrally manufactured component, or that the rack 600 and the shielding component 200 are two separately manufactured components assembled together. "The gear 500 is integrally formed or connected to the knob 400" means that the gear 500 and the knob 400 are a single integrally manufactured component, or that the gear 500 and the knob 400 are two separately manufactured components assembled together. In practical applications, when the user rotates the knob 400, the knob 400 drives the gear 500 to rotate synchronously. The rotation of the gear 500 drives the rack 600 to move up or down, and the movement of the rack 600 drives the blocking component 200 to move up or down synchronously. Changing the rotation direction of the knob 400 changes the movement direction of the blocking component 200. In this embodiment, the rack 600 is directly connected to the blocking component 200, and the gear 500 is directly connected to the knob 400, without the need for any additional transmission components between the rack 600 and the blocking component 200, or between the gear 500 and the knob 400. This simplifies the structure of the cleaning head 10.

[0082] In one implementation, the rack 600 extends along the vertical direction Z. Specifically, the rack 600 includes a plurality of first teeth spaced apart along the vertical direction Z. Thus, when the gear 500 rotates under the drive of the knob 400, it can drive the rack 600 to move linearly along the vertical direction Z, thereby achieving the purpose of the rack 600 directly driving the blocking component 200 to move up and down.

[0083] Reference Figures 1 to 4As shown, in one embodiment, the gear 500 and rack 600 are arranged side by side in a horizontal direction, that is, the gear 500 and rack 600 are distributed in a horizontal direction and the gear 500 and rack 600 mesh with each other. This facilitates ensuring that the gear 500 can directly drive the rack 600 to move up and down. In this embodiment, the side-by-side direction of the gear 500 and rack 600 is perpendicular to the direction of movement of the cleaning head 10 on the surface to be cleaned. Specifically, the gear 500 and rack 600 are arranged side by side along a first horizontal direction X, that is, the rack 600 is located on one side of the gear 500 in the first horizontal direction X. The rotation center axis of the gear 500 extends along a second horizontal direction Y, which is perpendicular to the first horizontal direction X. In this embodiment, the first horizontal direction X is the left-right direction of the cleaning head 10; the second horizontal direction Y is the front-back direction of the cleaning head 10, that is, the second horizontal direction Y is the direction of movement of the cleaning head 10 on the surface to be cleaned.

[0084] In one implementation, the rotation center axis of the knob 400 is coaxial with the rotation center axis of the gear 500, that is, the rotation center axis of the knob 400 and the rotation center axis of the gear 500 are collinear. This helps to ensure the symmetry of the structure formed by assembling the knob 400 and the gear 500, thereby helping to ensure the smoothness of the knob 400 driving the gear 500 to rotate.

[0085] In one implementation, gear 500 is detachably connected to knob 400, meaning gear 500 and knob 400 are two separately manufactured components. After assembly, gear 500 and knob 400 can be disassembled and separated without damaging their structures. This detachable connection facilitates separate manufacturing of gear 500 and knob 400 according to their design requirements, reducing the manufacturing difficulty of individual components. It also facilitates later disassembly, maintenance, and replacement of gear 500 and knob 400. Of course, in specific applications, as an alternative implementation, gear 500 and knob 400 can also be configured with a non-detachable fixed connection, for example, gear 500 welded to knob 400.

[0086] Reference Figure 3 As shown, in one embodiment, the gear 500 is detachably connected to the knob 400 via a screw 700, with the screw 700 passing through and connecting the gear 500 and the knob 400 in sequence. In this embodiment, the gear 500 and the knob 400 are connected by a screw 700, which is convenient for disassembly and assembly and provides a reliable fastening. Of course, in specific applications, the gear 500 and the knob 400 can also be detachably connected in other ways, such as a threaded connection.

[0087] Reference Figure 3 , Figure 8 and Figure 9As shown, in one embodiment, the gear 500 has a first connecting hole 510 through it along its rotation center axis, and the knob 400 has a second connecting hole 410 along its rotation center axis. The first connecting hole 510 is a through hole, and the second connecting hole 410 is a threaded hole. The screw 700 passes through the first connecting hole 510 and the second connecting hole 410 in sequence to achieve a tight connection between the gear 500 and the knob 400.

[0088] In one implementation, the central axis of the screw 700 is coaxial with the rotational central axis of the knob 400 and the rotational central axis of the gear 500. That is, the screw 700 passes through the gear 500 and the knob 400 sequentially along the rotational central axis of the gear 500. This helps to ensure the symmetry of the weight distribution of the structure formed by the assembly of the knob 400 and the gear 500.

[0089] Reference Figure 3 , Figure 8 and Figure 9 As shown, in one embodiment, one of the knob 400 and the gear 500 is provided with a positioning boss 520 and the other with a positioning groove 420, and the positioning boss 520 and the positioning groove 420 are engaged. When assembling the knob 400 and the gear 500, the positioning boss 520 can be first inserted into the positioning groove 420 to achieve pre-positioning of the knob 400 and the gear 500, and then the screw 700 is screwed from the gear 500 into the knob 400. The engagement of the positioning boss 520 and the positioning groove 420 facilitates pre-positioning of the knob 400 and the gear 500 during the assembly process, thereby improving the ease of assembly; on the other hand, it reduces the load on the screw 700, thereby improving the long-term stability and reliability of the connection between the knob 400 and the gear 500.

[0090] Reference Figure 3 , Figure 8 and Figure 9 As shown, in one embodiment, the number of positioning bosses 520 and positioning grooves 420 is one. The outer sidewall of the positioning boss 520 includes at least one planar first sidewall 521, and the inner sidewall of the positioning groove 420 includes at least one planar second sidewall 421. The first sidewall 521 and the second sidewall 421 are fitted together. Since both the first sidewall 521 and the second sidewall 421 are planar, neither the outer sidewall of the positioning boss 520 nor the inner sidewall of the positioning groove 420 is a complete cylindrical surface. This helps prevent relative rotation between the knob 400 and the gear 500, thereby ensuring the reliability of the knob 400 driving the gear 500 to rotate.

[0091] In one implementation, the central axis of the positioning boss 520, the central axis of the positioning groove 420, the rotation central axis of the knob 400, the rotation central axis of the gear 500, and the central axis of the screw 700 are coaxial, that is, the positioning boss 520, the positioning groove 420, and the screw 700 are all designed to be centered.

[0092] Reference Figure 3 , Figure 8 and Figure 9 As shown, in one embodiment, the gear 500 includes a gear body 530 and a positioning boss 520. The positioning boss 520 protrudes from one axial end of the gear body 530, and the outer diameter of the positioning boss 520 is smaller than the outer diameter of the gear body 530. A first connecting hole 510 extends from the end face of the gear body 530 opposite to the positioning boss 520 to the end face of the positioning boss 520 opposite to the gear body 530. A positioning groove 420 is recessed from the end face of the knob 400 facing the gear 500 along the rotation center axis of the knob 400, and a second connecting hole 410 is recessed from the wall face of the positioning groove 420 facing the gear 500.

[0093] Reference Figure 8 and Figure 9As shown, in one embodiment, the outer wall of the positioning boss 520 includes two parallel first sidewalls 521 and two opposite third sidewalls 522 connected to the two first sidewalls 521 respectively. The inner wall of the positioning groove 420 includes two parallel second sidewalls 421 and two opposite fourth sidewalls 422 connected to the two second sidewalls 421 respectively. Both first and second sidewalls 521 are planar, while both third and fourth sidewalls 422 are arc-shaped. This design facilitates both the anti-rotation design of the knob 400 and gear 500 and ensures the symmetry of the knob 400 and gear 500 structures. Of course, in specific applications, the shapes of the positioning boss 520 and positioning groove 420 are not limited to these, as long as neither the outer wall of the positioning boss 520 nor the inner wall of the positioning groove 420 is a complete cylindrical surface. For example, as an alternative embodiment, the outer wall of the positioning boss 520 includes a first sidewall 521 and a third sidewall 522 connected to both ends of the first sidewall 521, and the inner wall of the positioning groove 420 includes a second sidewall 421 and a fourth sidewall 422 connected to both ends of the second sidewall 421, respectively. The first and second sidewalls 521 are both planar, and the third and fourth sidewalls 522 are both arc-shaped. The positioning boss 520 and the positioning groove 420 are approximately D-shaped. Alternatively, as another alternative embodiment, the outer wall of the positioning boss 520 includes three or four or more first sidewalls 521 connected end-to-end in sequence, and the inner wall of the positioning groove 420 includes three or four or more second sidewalls 421 connected end-to-end in sequence. Each first sidewall 521 and each second sidewall 421 is planar, and the positioning boss 520 and the positioning groove 420 are polygonal. Alternatively, as another alternative implementation, the positioning boss 520 and the positioning groove 420 are in the shape of a five-pointed star.

[0094] In the above scheme, the positioning boss 520 and the positioning groove 420 adopt a non-circular wall surface fit to achieve the design effect of preventing relative rotation between the knob 400 and the gear 500, and its structure is simple. Of course, in specific applications, the anti-rotation design of the knob 400 and the gear 500 is not limited to the above scheme. For example, as an alternative implementation scheme, the anti-rotation design of the knob 400 and the gear 500 can be achieved by the snap-fit ​​fit of multiple positioning bosses 520 and positioning grooves 420. Specifically, in this alternative implementation scheme, the number of positioning bosses 520 is at least two, the number of positioning grooves 420 is the same as the number of positioning bosses 520, the at least two positioning bosses 520 are spaced apart, and each positioning boss 520 is snap-fit ​​fitted with a positioning groove 420. The at least two positioning bosses 520 are circumferentially spaced around the rotation center axis of the gear 500. Alternatively, as another alternative implementation, the number of positioning bosses 520 and positioning grooves 420 is one, and the central axis of the positioning boss 520 and the central axis of the positioning groove 420 are not coaxial with the central axis of the screw 700, for example, they are arranged in parallel at intervals.

[0095] Reference Figure 1 , Figure 7 and Figure 10 As shown, in one embodiment, the shielding member 200 includes a first vertical extension 210, a second vertical extension 220, and a horizontal extension 230. The first vertical extension 210 is spaced apart in front of the second vertical extension 220 along the moving direction of the cleaning head 10 on the surface to be cleaned. The horizontal extension 230 extends from the bottom end of the first vertical extension 210 to the bottom end of the second vertical extension 220. The rack 600 is integrally formed or connected to the first vertical extension 210. The first vertical extension 210 is used to open or close the auxiliary suction port 121. The first vertical extension 210 is mainly used to connect with the rack 600 and to open and close the auxiliary suction port 121. The second vertical extension 220 is mainly used to connect with the housing 100. The horizontal extension 230 is mainly used to connect the first vertical extension 210 and the second vertical extension 220. In this embodiment, the shielding component 200 is divided into three parts. This allows the part for connecting with the rack 600 and for opening and closing the auxiliary suction port 121 to be designed independently in terms of shape and size from the part for connecting with the housing 100. It also helps to prevent interference between the gear 500 and the second vertical extension 220 and the housing 100.

[0096] In one implementation, both the first vertical extension 210 and the second vertical extension 220 extend upward in the vertical direction Z, and the lateral extension 230 extends in the second horizontal direction Y. Of course, in specific applications, as an alternative implementation, the first vertical extension 210 and / or the second vertical extension 220 may also extend upward at an angle to the vertical direction Z; the lateral extension 230 may also extend upward at an angle to the second horizontal direction Y.

[0097] In one embodiment, both the first vertical extension 210 and the second vertical extension 220 are plate-shaped, meaning both are vertically extending plates. The shielding member 200 can be formed by bending a single plate, making it easy to manufacture. (Refer to...) Figure 1 and Figure 10 As shown, in one embodiment, the first vertical extension 210 and the second vertical extension 220 satisfy at least one of the following conditions: the height H1 of the first vertical extension 210 is less than the height H2 of the second vertical extension 220, and the length L1 of the first vertical extension 210 is less than the length L2 of the second vertical extension 220. Specifically, the height H1 of the first vertical extension 210 refers to the dimension of the first vertical extension 210 extending along the vertical direction Z, that is, the distance between the bottom and top ends of the first vertical extension 210 when the cleaning head 10 is placed on the surface to be cleaned. Specifically, the height H2 of the second vertical extension 220 refers to the dimension of the second vertical extension 220 extending along the vertical direction Z, that is, the distance between the bottom and top ends of the second vertical extension 220 when the cleaning head 10 is placed on the surface to be cleaned. Specifically, the length L1 of the first vertical extension 210 refers to the dimension of the first vertical extension 210 extending along the first horizontal direction X (left-right direction in this embodiment). The length L2 of the second vertical extension 220 specifically refers to the dimension of the second vertical extension 220 extending along the first horizontal direction X. The first vertical extension 210 and the second vertical extension 220 are spaced apart along the second horizontal direction Y (the front-to-back direction in this embodiment). In this embodiment, the height H1 and / or length L1 of the first vertical extension 210 are designed to be smaller than that of the second vertical extension 220. This satisfies the opening and closing function of the first vertical extension 210 for the auxiliary suction port 121, and also helps to reduce the volume of the first vertical extension 210. Placing the rack 600 on the smaller first vertical extension 210 helps to reduce the overall space occupied by the rack 600 and the shielding component 200.

[0098] Reference Figure 1 , Figure 3 and Figure 10As shown, in one embodiment, the height H1 of the first vertical extension 210 is less than the height H2 of the second vertical extension 220, and the length L1 of the first vertical extension 210 is less than the length L2 of the second vertical extension 220. Placing the rack 600 on the shorter first vertical extension 210 helps reduce the overall height of the structure composed of the rack 600 and the blocking member 200, and also helps prevent interference between the gear 500 and the blocking member 200.

[0099] Reference Figure 1 , Figure 2 , Figure 3 and Figure 7 As shown, in one embodiment, the housing 100 also has a mounting hole 122, which communicates with the suction chamber 110 and is located above the auxiliary suction port 121. At least partially, one of the knob 400 and the gear 500 passes through the mounting hole 122 to connect with the other of the knob 400 and gear 500. In this embodiment, the mounting hole 122 for mounting the knob 400 or gear 500 is located above the auxiliary suction port 121, which helps to reduce the transmission distance between the knob 400 and the blocking member 200, thereby improving the structural compactness of the transmission structure between the knob 400 and the blocking member 200, and simplifying the transmission structure between the knob 400 and the blocking member 200.

[0100] Reference Figure 1 , Figure 2 , Figure 3 and Figure 7As shown, in one embodiment, the mounting hole 122 includes a first hole segment 1221 and a second hole segment 1222 with a diameter smaller than that of the first hole segment 1221. The second hole segment 1222 is disposed axially between the first hole segment 1221 and the suction chamber 110 along the first connecting hole 510. The knob 400 includes a first rod segment 430 and a second rod segment 440 with an outer diameter smaller than that of the first rod segment 430. The first rod segment 430 passes through the first hole segment 1221, and the second rod segment 440 passes at least partially through the second hole segment 1222. The second rod segment 440 has a grip portion 460 for a person to hold and rotate the knob 400. One end of the first hole segment 1221 is connected to one end of the second hole segment 1222, and one end of the first rod segment 430 is connected to one end of the second rod segment 440. In this embodiment, the mounting hole 122 is used to mount the knob 400, and the mounting hole 122 is a stepped hole. The knob 400 has a stepped structure. The first axial step end face 450 formed between the first rod segment 430 and the second rod segment 440 abuts against the second axial step end face 1223 formed between the first hole segment 1221 and the second hole segment 1222. In this way, the second axial step end face 1223 can be used to limit the axial movement of the knob 400. The first hole segment 1221 can be used to support the first rod segment 430 and to limit the first rod segment 430 radially. The second hole segment 1222 can be used to support the second rod segment 440 and to limit the second rod segment 440 radially.

[0101] In one embodiment, the grip portion 460 is formed in a straight line at the end of the second segment 440 opposite to the first segment 430.

[0102] In one embodiment, the positioning groove 420 is recessed from the end face of the second rod segment 440 opposite to the first rod segment 430 along the rotation center axis of the knob 400 toward the side where the first rod segment 430 is located. The second connecting hole 410 extends from the wall surface of the positioning groove 420 facing the gear 500 into the first rod segment 430.

[0103] Reference Figure 5 , Figure 6 , Figure 7 , Figure 10 and Figure 11As shown, in one embodiment, one of the shielding component 200 and the housing 100 is provided with an elastic limiting structure 180, and the other is provided with a limiting hole group 240. The limiting hole group 240 includes a first limiting hole 241 and a second limiting hole 242 distributed at Z intervals along the vertical direction. The first limiting hole 241 is used to engage with the elastic limiting structure 180 when the shielding component 200 is in the state of having the auxiliary suction port 121 open. The second limiting hole 242 is used to engage with the elastic limiting structure 180 when the shielding component 200 is in the state of having the auxiliary suction port 121 closed. The first limiting hole 241 and the second limiting hole 242 are equivalent to two working positions of the shielding component 200, namely the closed position and the open position. In these two positions, the first limiting hole 241 and the second limiting hole 242 engage with the elastic limiting structure 180 respectively, thereby limiting the shielding component 200. Of course, in specific applications, the limiting hole group 240 is not limited to providing the first limiting hole 241 and the second limiting hole 242. In alternative embodiments, a third limiting hole or more limiting holes can also be provided. The first limiting hole 241 and the third limiting hole are used to engage with the elastic limiting structure 180 when the auxiliary suction port 121 is in different opening degrees. In this way, the blocking component 200 can not only be used to open and close the auxiliary suction port 121, but also to adjust the degree of opening of the auxiliary suction port 121.

[0104] In one embodiment, the first limiting hole 241 is located above the second limiting hole 242.

[0105] Reference Figure 6 , Figure 7 , Figure 10 and Figure 11As shown, in one embodiment, the elastic limiting structure 180 is an elastic buckle 181, which includes a vertical rod 1811 along the vertical direction Z and a hook 1812 bent at the top of the vertical rod 1811. When the blocking component 200 is in the open auxiliary suction port 121 state, the hook 1812 engages with the first limiting hole 241. When the blocking component 200 is in the closed auxiliary suction port 121 state, the hook 1812 engages with the second limiting hole 242. When the knob 400 is needed to switch the shielding component 200 from the state of opening the auxiliary suction port 121 to the state of closing the auxiliary suction port 121, the knob 400 is rotated around the first rotation direction. The driving force generated by the rotation of the knob 400 can drive the elastic protrusion 181 to undergo elastic deformation, so that the hook 1812 slides out of the first limiting hole 241, thereby releasing the limiting of the shielding component 200 by the locking cooperation between the first limiting hole 241 and the hook 1812, so that the shielding component 200 can be lowered under the drive of the knob 400. When the shielding component 200 is lowered to the position where the second limiting hole 242 is directly opposite the hook 1812, the hook 1812 can be locked in the second limiting hole 242 under the elastic restoring force of the elastic protrusion 181. At this time, a tactile feedback can be provided to the user. The user releases the knob 400, thus completing the switching of the state of the shielding component 200. The principle of switching the shielding component 200 from the closed to the open state of the auxiliary suction port 121 by driving the knob 400 is similar to that of switching the shielding component 200 from the open to the closed state of the auxiliary suction port 121 by driving the knob 400, except that the rotation direction of the knob 400 and the movement direction of the shielding component 200 are different. For example, when switching the shielding component 200 from the open to the closed state of the auxiliary suction port 121 by driving the knob 400, the knob 400 is driven to rotate around a second rotation direction, one of which is counterclockwise and the other is clockwise.

[0106] In the above scheme, the elastic limiting structure 180 uses an elastic buckle 181 to achieve a locking engagement with the first limiting hole 241 and the second limiting hole 242. Its structure is simple and low-cost. Of course, in specific applications, the setting method of the elastic limiting structure 180 is not limited to the above scheme. For example, as an alternative implementation, the elastic limiting structure 180 is a ball-head plunger, also known as a spring plunger. It includes a fixed sleeve, a spring disposed within the fixed sleeve, and a ball-head positioning member connected to one end of the spring. The ball-head positioning member can protrude out of the fixed sleeve under the action of the spring and can retract into the fixed sleeve under the action of external force. Specifically, when the blocking component 200 is in the state of having the auxiliary suction port 121 open, the ball-head positioning member extends out of the fixed sleeve and locks into the first limiting hole 241. When the blocking component 200 is in the state of having the auxiliary suction port 121 closed, the ball-head positioning member extends out of the fixed sleeve and locks into the second limiting hole 242. During the lifting and lowering of the blocking component 200, the ball head positioning component is squeezed to overcome the elastic force of the spring and retracts into the fixed sleeve.

[0107] Reference Figure 6 , Figure 7 , Figure 10 and Figure 11As shown, in one embodiment, there are two elastic limiting structures 180 and two limiting hole groups 240. The two elastic limiting structures 180 are spaced apart along a horizontal direction perpendicular to the rotation center axis of the knob 400, that is, the two elastic limiting structures 180 are spaced apart along the first horizontal direction X (left-right direction). The limiting holes of each limiting hole group 240 are used to engage with one elastic limiting structure 180, that is, all the limiting holes of one limiting hole group 240 are used to engage with one elastic limiting structure 180 respectively, and all the limiting holes of the other limiting hole group 240 are used to engage with the other elastic limiting structure 180 respectively. Specifically, the two elastic limiting structures 180 are a first elastic limiting structure 180 and a second elastic limiting structure 180, respectively. The two limiting hole groups 240 are a first hole group and a second hole group, respectively. The first limiting hole 241 of the first hole group is used to engage with the first elastic limiting structure 180 when the blocking component 200 is in the state of having the auxiliary suction port 121 open; the second limiting hole 242 of the first hole group is used to engage with the first elastic limiting structure 180 when the blocking component 200 is in the state of having the auxiliary suction port 121 closed. The first limiting hole 241 of the second hole group is used to engage with the second elastic limiting structure 180 when the blocking component 200 is in the state of having the auxiliary suction port 121 open; the second limiting hole 242 of the second hole group is used to engage with the second elastic limiting structure 180 when the blocking component 200 is in the state of having the auxiliary suction port 121 closed. In this embodiment, by setting two elastic limiting structures 180 at an interval in the first horizontal direction X, it is beneficial to maintain the horizontality of the shielding component 200 through two support points, and to improve the stability and reliability of the installation and positioning of the shielding component 200.

[0108] In one implementation, in the first horizontal direction X, the two limiting hole groups 240 are located on opposite sides of the rack 600.

[0109] In one embodiment, an elastic limiting structure 180 is formed on the housing 100, and a limiting hole group 240 is formed on the blocking member 200.

[0110] In one embodiment, the limiting hole group 240 is formed on the second vertical extension 220.

[0111] Reference Figure 5 , Figure 6 , Figure 7 and Figure 11 As shown, in one embodiment, the housing 100 includes a lower housing 120 and a support frame 130, the support frame 130 being detachably mounted on the lower housing 120. An auxiliary suction port 121 and a mounting hole 122 are formed on the front side of the lower housing 120. The support frame 130 has a resilient buckle 181.

[0112] Reference Figure 1 and Figure 2 As shown, in one embodiment, the housing 100 also has a suction channel 151 and a main suction port 140. The main suction port 140 is connected to one end of the suction channel 151 and the suction cavity 110.

[0113] In one embodiment, the main suction port 140 is located behind the suction chamber 110 along the moving direction of the cleaning head 10 on the surface to be cleaned.

[0114] In one implementation, the main suction port 140 is positioned obliquely downwards from the rear of the suction chamber 110 toward the surface to be cleaned.

[0115] Reference Figure 1 and Figure 2 As shown, in one embodiment, the housing 100 further includes a first upper housing 160, a second upper housing 170, and a conduit 150. The first upper housing 160 is connected to and covers the lower housing 120, forming a suction cavity 110 together with the lower housing 120. The second upper housing 170 is disposed on the rear upper part of the first upper housing 160. The main suction port 140 is formed by the first upper housing 160, the second upper housing 170, and the lower housing 120. The conduit 150 is connected to the rear side of the first upper housing 160, the rear side of the second upper housing 170, and the rear side of the lower housing 120, and the conduit 150 forms a suction channel 151.

[0116] In one embodiment, the cleaning head 10 also includes a motor (not shown), which is mounted inside the housing 100 and is connected to the roller brush 300 for driving the roller brush 300 to rotate.

[0117] Reference Figure 1 As shown, in one embodiment, the cleaning head 10 also includes at least two rollers 800, which are rotatably mounted on the bottom of the housing 100.

[0118] A first aspect of this utility model embodiment also provides a cleaning device, which includes a main unit (not shown) and the aforementioned cleaning head 10. The main unit is connected to the cleaning head 10 to provide negative pressure to the suction chamber 110. The negative pressure provided by the main unit to the suction chamber 110 can create suction pressure for dust, debris, and other waste on the surface to be cleaned. Because the cleaning device provided in this embodiment uses the aforementioned cleaning head 10, the auxiliary suction port 121 can be quickly opened or closed via a knob 400 to meet the cleaning needs of the cleaning device in different application scenarios, effectively balancing the cleaning needs for large-sized waste and the requirements for suction power.

[0119] As one implementation method, the main unit is equipped with a negative pressure power source, which is used to generate negative pressure.

[0120] In one implementation, the cleaning equipment is a vacuum cleaner, which is mainly used to vacuum up dust and debris from the surface to be cleaned. Specifically, the cleaning equipment can be a handheld vacuum cleaner, a canister vacuum cleaner, an upright vacuum cleaner, a stick vacuum cleaner, or the like.

[0121] A second aspect of this utility model provides a cleaning head 10, which includes a housing 100, a roller brush 300, a blocking member 200, a rack 600, and a gear 500. The housing 100 has a suction chamber 110 and an auxiliary suction port 121. The auxiliary suction port 121 is located in front of the suction chamber 110 along the moving direction of the cleaning head 10 on the surface to be cleaned, and communicates with the suction chamber 110. The roller brush 300 is rotatably disposed within the suction chamber 110. The blocking member 200 is integrally formed with or connected to a rack 600 extending in the vertical direction Z, and the blocking member 200 is movably connected to the housing 100 to at least open or close the auxiliary suction port 121. The gear 500 meshes with the rack 600 to drive the rack 600 to move up and down, thereby opening or closing the auxiliary suction port 121. The cleaning head 10 provided in this embodiment has an auxiliary suction port 121 formed in front of the suction chamber 110 in the housing 100. The auxiliary suction port 121 is opened and closed by a shielding component 200 movably connected to the housing 100. Thus, in specific applications, the state of the shielding component 200 can be adjusted to meet cleaning needs in different scenarios. For example, when the shielding component 200 is switched to the open state of the auxiliary suction port 121, the cleaning head 10 allows larger debris on the surface to be cleaned to enter the suction chamber 110 through the open auxiliary suction port 121 and be sucked away by the cleaning head 10, achieving the cleaning function for larger debris or other waste on the surface. When the shielding component 200 is switched to the closed state of the auxiliary suction port 121, the air pressure leakage in the suction chamber 110 is reduced, thereby maximizing the suction force of the cleaning head 10 for cleaning the surface, ensuring the cleaning effect of the cleaning head 10 on heavily soiled surfaces. Furthermore, this utility model uses a transmission mechanism composed of a gear 500 and a rack 600 to drive the shielding component 200 to open and close the auxiliary suction port 121, which has a simple and compact structure.

[0122] In one embodiment, the shielding component 200 includes a first vertical extension 210, a second vertical extension 220, and a lateral extension 230. The first vertical extension 210 is spaced apart in front of the second vertical extension 220 along the moving direction of the cleaning head 10 on the surface to be cleaned. The lateral extension 230 extends from the bottom end of the first vertical extension 210 and connects to the bottom end of the second vertical extension 220. The rack 600 is integrally formed or connected to the first vertical extension 210. The first vertical extension 210 is used to open or close the auxiliary suction port 121.

[0123] In one embodiment, both the first vertical extension 210 and the second vertical extension 220 are plate-shaped.

[0124] In one embodiment, the height of the first vertical extension 210 is less than the height of the second vertical extension 220, and the length of the first vertical extension 210 is less than the length of the second vertical extension 220.

[0125] In one embodiment, one of the shielding component 200 and the housing 100 is provided with an elastic limiting structure 180, and the other is provided with a limiting hole group 240. The limiting hole group 240 includes a first limiting hole 241 and a second limiting hole 242 distributed at Z intervals along the vertical direction. The first limiting hole 241 is used to engage with the elastic limiting structure 180 when the shielding component 200 is in the state of having the auxiliary suction port 121 open, and the second limiting hole 242 is used to engage with the elastic limiting structure 180 when the shielding component 200 is in the state of having the auxiliary suction port 121 closed.

[0126] In one implementation, the elastic limiting structure 180 is an elastic snap 181 or a ball-head plunger.

[0127] A second aspect of this utility model embodiment also provides a cleaning device, which includes a main unit and the aforementioned cleaning head 10. The main unit is connected to the cleaning head 10 to provide negative pressure to the suction chamber 110.

[0128] Other parts and principles of the cleaning head 10 and cleaning device provided in the second aspect of the present invention can be referred to the cleaning head 10 and cleaning device provided in the first aspect of the present invention, and will not be described in detail here.

[0129] A third aspect of this utility model provides a cleaning head 10, which includes a housing 100, a roller brush 300, a shielding member 200, and a knob 400. The housing 100 forms a suction cavity 110. The roller brush 300 is rotatably disposed within the suction cavity 110. The shielding member 200 is disposed in front of the roller brush 300 along the moving direction of the cleaning head 10 on the surface to be cleaned, and the shielding member 200 is vertically and vertically connected to the housing 100. The knob 400 is rotatably connected to the housing 100 and is throttle-connected to the shielding member 200 to rotate under external force and drive the shielding member 200 to move vertically, thereby adjusting the distance from the bottom end of the shielding member 200 to the surface to be cleaned. The cleaning head 10 provided by this utility model, by movably connecting the shielding member 200 located in front of the suction cavity 110 to the housing 100, allows for adjustment of the state of the shielding member 200 to meet cleaning needs in different scenarios during specific applications. For example, when the shielding component 200 is adjusted to a position where its bottom is further from the surface to be cleaned, the cleaning head 10 allows larger debris on the surface to pass through the gap between the bottom of the shielding component 200 and the surface to be cleaned into the suction chamber 110, where it is then sucked away, thus achieving the cleaning function for larger debris or other waste on the surface. Conversely, when the shielding component 200 is adjusted to a position where its bottom is further from the surface to be cleaned, air pressure leakage in the suction chamber 110 is reduced, thereby maximizing the suction force of the cleaning head 10 on the surface to be cleaned, ensuring the cleaning effect of the cleaning head 10 on heavily soiled surfaces. Furthermore, this invention uses a knob 400 to drive the shielding component 200 to move up and down to adjust the distance between its bottom and the surface to be cleaned. This method is simple and convenient to operate, and the knob 400 occupies little space, which helps to minimize the impact on the spatial layout of the cleaning head 10 and the airtightness of the suction chamber 110.

[0130] In one embodiment, the shielding component 200 is integrally formed or connected to a rack 600, which extends in the vertical direction Z. The cleaning head 10 also includes a gear 500, which is connected to or integrally formed with a knob 400, and the gear 500 meshes with the rack 600 to drive the rack 600 and the shielding component 200 to move up and down under the drive of the knob 400.

[0131] In one embodiment, the shielding member 200 includes a first vertical extension 210, a second vertical extension 220, and a lateral extension 230. The first vertical extension 210 is spaced in front of the second vertical extension 220 along the moving direction of the cleaning head 10 on the surface to be cleaned. The lateral extension 230 extends from the bottom end of the first vertical extension 210 and connects to the bottom end of the second vertical extension 220.

[0132] A third aspect of this utility model embodiment also provides a cleaning device, which includes a main unit and the aforementioned cleaning head 10. The main unit is connected to the cleaning head 10 to provide negative pressure to the suction chamber 110.

[0133] The other parts and principles of the cleaning head 10 and cleaning device provided in the third aspect of the present invention can be referred to the cleaning head 10 and cleaning device provided in the first aspect of the present invention, and will not be described in detail here.

[0134] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A cleaning head, characterized in that: include: The housing has a suction chamber and an auxiliary suction port. The auxiliary suction port is located in front of the suction chamber along the direction of movement of the cleaning head on the surface to be cleaned, and the auxiliary suction port is in communication with the suction chamber. A roller brush, which is rotatably disposed within the suction chamber; A shielding component, which is movably connected to the housing, is used at least to open or close the auxiliary suction port; A knob is rotatably connected to the housing and is throttle-connected to the shielding component, so as to rotate under the action of external force and drive the shielding component to move, thereby opening or closing the auxiliary suction port.

2. The cleaning head as described in claim 1, characterized in that: The shielding component is vertically and retractably connected to the housing; The knob is used to drive the blocking component to move up and down, so that the blocking component opens or closes the auxiliary suction port.

3. The cleaning head as described in claim 2, characterized in that: The cleaning head also includes gears and racks; The rack is integrally formed or connected to the shielding component; The gear is integrally formed or connected to the knob, and the gear meshes with the rack to drive the rack and the blocking component to move up and down under the drive of the knob.

4. The cleaning head as described in claim 3, characterized in that: The rack extends vertically. And / or, the gear and the rack are arranged side by side in the horizontal direction.

5. The cleaning head as described in claim 3, characterized in that: The rotation center axis of the knob is coaxial with the rotation center axis of the gear; And / or, the gear is detachably connected to the knob by a screw.

6. The cleaning head as described in any one of claims 3 to 5, characterized in that: One of the knob and the gear is provided with a positioning boss and the other is provided with a positioning groove, and the positioning boss and the positioning groove are engaged.

7. The cleaning head as described in claim 6, characterized in that: The number of the positioning boss and the positioning groove is one, and the outer side wall of the positioning boss includes at least one planar first side wall, and the inner side wall of the positioning groove includes at least one planar second side wall, with the first side wall and the second side wall being fitted together. Alternatively, the number of positioning protrusions is at least two, the number of positioning grooves is the same as the number of positioning protrusions, the at least two positioning protrusions are spaced apart, and each positioning protrusion is engaged with one of the positioning grooves.

8. The cleaning head as described in any one of claims 3 to 5, characterized in that: The shielding component includes a first vertical extension, a second vertical extension, and a lateral extension. The first vertical extension is spaced in front of the second vertical extension along the moving direction of the cleaning head on the surface to be cleaned. The lateral extension extends from the bottom end of the first vertical extension to the bottom end of the second vertical extension. The rack is integrally formed or connected to the first vertical extension; The first vertical extension is used to open or close the auxiliary suction port.

9. The cleaning head as described in claim 8, characterized in that: Both the first vertical extension and the second vertical extension are plate-shaped. And / or, the first vertical extension and the second vertical extension satisfy at least one of the following conditions: the height of the first vertical extension is less than the height of the second vertical extension, and the length of the first vertical extension is less than the length of the second vertical extension.

10. The cleaning head as described in any one of claims 3 to 5, characterized in that: The housing also has a mounting hole, which communicates with the suction chamber and is located above the auxiliary suction port; One of the knob and the gear is at least partially inserted into the mounting hole to connect with the other of the knob and the gear.

11. The cleaning head as described in claim 10, characterized in that: The mounting hole includes a first hole section and a second hole section with a diameter smaller than that of the first hole section. The second hole section is disposed between the first hole section and the suction chamber along the axial direction of the first connecting hole. The knob includes a first rod segment and a second rod segment with an outer diameter smaller than that of the first rod segment. The first rod segment passes through the first hole segment, and the second rod segment passes through at least partially through the second hole segment. The second rod segment has a grip portion for a person to hold and rotate the knob.

12. The cleaning head according to any one of claims 1 to 5, characterized in that: One of the shielding component and the housing is provided with an elastic limiting structure, and the other is provided with a group of limiting holes; The limiting hole group includes a first limiting hole and a second limiting hole that are spaced apart along the vertical direction; The first limiting hole is used to engage with the elastic limiting structure when the blocking component is in the state where the auxiliary suction port is open; The second limiting hole is used to engage with the elastic limiting structure when the blocking component is in the state of closing the auxiliary suction port.

13. The cleaning head as described in claim 12, characterized in that: The elastic limiting structure is an elastic buckle or a ball-head plunger; And / or, the number of the elastic limiting structure and the number of the limiting hole group are both two, the two elastic limiting structures are distributed at intervals along the horizontal direction perpendicular to the rotation center axis of the knob, and the limiting hole of each limiting hole group is used to engage with one of the elastic limiting structures.

14. A cleaning head, characterized in that: include: The housing has a suction chamber and an auxiliary suction port. The auxiliary suction port is located in front of the suction chamber along the direction of movement of the cleaning head on the surface to be cleaned, and the auxiliary suction port is in communication with the suction chamber. A roller brush, which is rotatably disposed within the suction chamber; A shielding component, which is movably connected to the housing, is used at least to open or close the auxiliary suction port; A rack, which is integrally formed or connected to the shielding component; A gear that meshes with the rack to drive the rack to move up and down, thereby opening or closing the auxiliary suction port of the shielding component.

15. The cleaning head as described in claim 14, characterized in that: The shielding component includes a first vertical extension, a second vertical extension, and a horizontal extension. The first vertical extension is spaced in front of the second vertical extension along the moving direction of the cleaning head on the surface to be cleaned. The horizontal extension extends from the bottom end of the first vertical extension and connects to the bottom end of the second vertical extension. The rack is integrally formed or connected to the first vertical extension. The first vertical extension is used to open or close the auxiliary suction port. And / or, one of the shielding component and the housing is provided with an elastic limiting structure, and the other is provided with a limiting hole group. The limiting hole group includes a first limiting hole and a second limiting hole distributed at intervals along the vertical direction. The first limiting hole is used to engage with the elastic limiting structure when the shielding component is in the state of opening the auxiliary suction port, and the second limiting hole is used to engage with the elastic limiting structure when the shielding component is in the state of closing the auxiliary suction port.

16. A cleaning head, characterized in that: include: A housing having a suction cavity; A roller brush, which is rotatably disposed within the suction chamber; A shielding component is provided in front of the roller brush along the moving direction of the cleaning head on the surface to be cleaned, and the shielding component is flexibly connected to the housing; A knob, rotatably connected to the housing and drivenly connected to the shielding component, is used to rotate under external force and drive the shielding component to move up and down, thereby adjusting the distance from the bottom of the shielding component to the surface to be cleaned.

17. The cleaning head as described in claim 16, characterized in that: The cleaning head also includes a gear and a rack. The rack is integrally formed or connected to the shielding component. The rack extends vertically. The gear is integrally formed or connected to the knob, and the gear meshes with the rack to drive the rack and the shielding component to move up and down under the drive of the knob. And / or, the shielding component includes a first vertical extension, a second vertical extension, and a lateral extension, wherein the first vertical extension is spaced apart in front of the second vertical extension along the moving direction of the cleaning head on the surface to be cleaned, and the lateral extension extends from the bottom end of the first vertical extension and connects to the bottom end of the second vertical extension.

18. A cleaning device, characterized in that: include: The cleaning head as described in any one of claims 1 to 17; The main unit is connected to the cleaning head to provide negative pressure to the suction chamber.

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